* Re: smsc911x driver
[not found] <7ac1e90c0607140711p4529d4fbh98d3e9edf2c7a52f@mail.gmail.com>
@ 2006-07-14 18:50 ` Stephen Hemminger
2006-07-28 11:48 ` SMSC LAN911x and LAN921x vendor driver Steve Glendinning
0 siblings, 1 reply; 20+ messages in thread
From: Stephen Hemminger @ 2006-07-14 18:50 UTC (permalink / raw)
To: Bahadir Balban
Cc: linux-net, catalin.marinas, ian.saturley, steve.glendinning,
netdev
On Fri, 14 Jul 2006 14:11:34 +0000
"Bahadir Balban" <bahadir.balban@gmail.com> wrote:
> Attached is a driver patch for SMSC911x family of ethernet chips,
> generated against 2.6.18-rc1 sources. There's a similar driver in the
> tree; this one has been tested by SMSC on all flavors of the chip and
> claimed to be efficient.
>
Please submit drivers to netdev@vger.kernel.org
> diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
> index 3918990..d158e05 100644
> --- a/drivers/net/Kconfig
> +++ b/drivers/net/Kconfig
> @@ -865,6 +865,13 @@ config NET_NETX
> <file:Documentation/networking/net-modules.txt>. The module
> will be called netx-eth.
>
> +config SMSC911X
> + tristate "SMSC 911x family of embedded ethernet support"
> + depends on NET_ETHERNET
> + ---help---
> + Say Y here if you want support for SMSC LAN911x family
> + of ethernet chips.
> +
> config DM9000
> tristate "DM9000 support"
> depends on (ARM || MIPS) && NET_ETHERNET
> diff --git a/drivers/net/Makefile b/drivers/net/Makefile
> index c91e951..51f680b 100644
> --- a/drivers/net/Makefile
> +++ b/drivers/net/Makefile
> @@ -196,6 +196,7 @@ obj-$(CONFIG_S2IO) += s2io.o
> obj-$(CONFIG_MYRI10GE) += myri10ge/
> obj-$(CONFIG_SMC91X) += smc91x.o
> obj-$(CONFIG_SMC911X) += smc911x.o
> +obj-$(CONFIG_SMSC911X) += smsc911x.o
> obj-$(CONFIG_DM9000) += dm9000.o
> obj-$(CONFIG_FEC_8XX) += fec_8xx/
>
> diff --git a/drivers/net/smsc911x.c b/drivers/net/smsc911x.c
> new file mode 100644
> index 0000000..e2f9adb
> --- /dev/null
> +++ b/drivers/net/smsc911x.c
> @@ -0,0 +1,2105 @@
> +/***************************************************************************
> + *
> + * Copyright (C) 2004-2005 SMSC
> + * Copyright (C) 2005 ARM
> + *
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License
> + * as published by the Free Software Foundation; either version 2
> + * of the License, or (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
> + *
> + ***************************************************************************
> + * Rewritten, heavily based on smsc911x simple driver by SMSC.
> + * Partly uses io macros from smc91x.c by Nicolas Pitre
> + */
> +
> +#include <linux/config.h>
> +#include <linux/delay.h>
> +#include <linux/errno.h>
> +#include <linux/etherdevice.h>
> +#include <linux/init.h>
> +#include <linux/ioport.h>
> +#include <linux/kernel.h>
> +#include <linux/mii.h>
> +#include <linux/module.h>
> +#include <linux/netdevice.h>
> +#include <linux/platform_device.h>
> +#include <linux/sched.h>
> +#include <linux/slab.h>
> +#include <linux/timer.h>
> +#include <linux/version.h>
> +#include <asm/bug.h>
> +#include <asm/bitops.h>
> +#include <asm/dma.h>
> +#include <asm/irq.h>
> +#include <asm/io.h>
> +#include "smsc911x.h"
> +
> +#define SMSC_CHIPNAME "smsc911x"
> +
> +/* Tasklet declarations */
> +static unsigned long rx_tasklet_parameter;
> +static void smsc911x_rx_tasklet(unsigned long data);
> +
> +DECLARE_TASKLET(rx_tasklet, smsc911x_rx_tasklet, 0);
* should be static.
* if you want to receive in softirq context use NAPI rather
than a tasklet.
> +MODULE_LICENSE("GPL");
> +/* Entry point for starting/opening the interface */
> +static int smsc911x_open(struct net_device *dev)
> +{
> + struct smsc911x_data *pdata;
> + unsigned char *mac_byte;
> + unsigned int mac_high16;
> + unsigned int mac_low32;
> + unsigned int timeout;
> + unsigned int intcfg;
> + int result;
> +
> + /* Set interrupt deassertion to 220uS */
> + intcfg = 22 << 24;
> + timeout = 1000;
> + result = -ENODEV;
> + pdata = 0;
> +
> + BUG_ON(!dev);
This kind of BUG_ON is useless, you will get whacked when
you deref the pointer anyway.
> + pdata = netdev_priv(dev);
> + BUG_ON(!pdata);
> +
> + /* Initialise smsc911x */
> +
> + /*
> + * dwIntCfg|=INT_CFG_IRQ_POL_; use this to set IRQ_POL bit
> + * dwIntCfg|=INT_CFG_IRQ_TYPE_; use this to set IRQ_TYPE bit
> + */
> + if (!smsc911x_lan_initialise(pdata, intcfg))
> + goto done;
> +
> + SMSC_TRACE("Testing irq handler using IRQ %d", dev->irq);
> + pdata->request_irq_disable = 0;
> + pdata->software_irq_signal = 0;
> + SMC_regwrite((SMC_regread(pdata, INT_EN) | INT_EN_SW_INT_EN_),
> + pdata, INT_EN);
> + do {
> + udelay(10);
> + timeout--;
> + } while (timeout && (!pdata->software_irq_signal));
> +
> + if (!pdata->software_irq_signal) {
> + printk("<1>ISR failed signaling test.");
> + result = -ENODEV;
> + goto done;
> + }
> + SMSC_TRACE("IRQ handler passed test using IRQ %d", dev->irq);
> +
> + printk("%s: SMSC9%3x identified at %#08x, IRQ: %d\n", dev->name,
> + (u32)((pdata->idrev >> 16) & 0xFFFF), pdata->base, dev->irq);
> +
> + smsc911x_mac_initialise(pdata);
> +
> + /* Read mac address from EEPROM */
> + mac_high16 = smsc911x_mac_read(pdata, ADDRH);
> + mac_low32 = smsc911x_mac_read(pdata, ADDRL);
> +
> + if ((mac_high16 == 0x0000FFFF) && (mac_low32 == 0xFFFFFFFF)) {
> + /* Use default MAC addresses if eeprom values are invalid */
> + mac_high16 = 0x00000070;
> + mac_low32 = 0x110F8000;
> +
> + smsc911x_mac_write(pdata, ADDRH, mac_high16);
> + smsc911x_mac_write(pdata, ADDRL, mac_low32);
Please use random_ether_addr instead of the default value.
> + SMSC_TRACE("MAC Address is set by default to 0x%04X%08X",
> + mac_high16, mac_low32);
> + } else {
> + SMSC_TRACE("Mac Address is read from LAN911x as 0x%04X%08X",
> + mac_high16, mac_low32);
> + }
> + mac_byte = (unsigned char *)&mac_low32;
> + dev->dev_addr[0] = mac_byte[0];
> + dev->dev_addr[1] = mac_byte[1];
> + dev->dev_addr[2] = mac_byte[2];
> + dev->dev_addr[3] = mac_byte[3];
What about byte order?
> +
> + mac_byte = (unsigned char *)&mac_high16;
> + dev->dev_addr[4] = mac_byte[0];
> + dev->dev_addr[5] = mac_byte[1];
> +
> + printk("%s: SMSC9%3x MAC Address: %02x:%02x:%02x:%02x:%02x:%02x\n",
> + dev->name, (u32)((pdata->idrev >> 16) & 0xFFFF),
> + dev->dev_addr[5], dev->dev_addr[4], dev->dev_addr[3],
> + dev->dev_addr[2], dev->dev_addr[1], dev->dev_addr[0]);
> +
> + netif_carrier_off(dev);
> + if (!smsc911x_phy_initialise(pdata)) {
> + SMSC_WARNING("Failed to initialize PHY");
> + result = -ENODEV;
> + goto done;
> + }
> +
> + smsc911x_tx_initialise(pdata);
> + smsc911x_rx_initialise(pdata);
> + netif_start_queue(dev);
> +
> + result = 0;
> +
> +done:
> + SMSC_TRACE("result: %d", result);
> + return result;
> +}
> +
> +/* Entry point for stopping the interface */
> +static int smsc911x_stop(struct net_device *dev)
> +{
> + unsigned long flags;
> + unsigned long base;
> + unsigned long idrev;
> + struct smsc911x_data *pdata;
> + struct net_device *pnetdev;
> +
> + BUG_ON(!dev);
> + pdata = netdev_priv(dev);
> + BUG_ON(!pdata);
> +
> + pdata->stop_link_poll = 1;
> + del_timer_sync(&pdata->link_poll_timer);
> +
> + spin_lock_irqsave(&dev->_xmit_lock, flags);
> + SMC_regwrite((SMC_regread(pdata, INT_CFG) & (~INT_CFG_IRQ_EN_)),
> + pdata, INT_CFG);
> + netif_stop_queue(pdata->dev);
> + spin_unlock_irqrestore(&dev->_xmit_lock, flags);
> +
> + /* At this point all Rx and Tx activity is stopped */
> + pdata->stats.rx_dropped += SMC_regread(pdata, RX_DROP);
> + smsc911x_tx_update_txcounters(pdata);
> +
> + /* Preserve important fields */
> + base = pdata->base;
> + idrev = pdata->idrev;
> + pnetdev = pdata->dev;
> +
> + /* Clear all structure */
> + memset((void *)pdata, 0, sizeof(struct smsc911x_data));
> +
> + /* Reassign important fields */
> + pdata->base = base;
> + pdata->idrev = idrev;
> + pdata->dev = pnetdev;
> +
> + SMSC_TRACE("<--Simp911x_stop");
> + return 0;
> +}
> +
> +/* Entry point for transmitting a packet */
> +static int
> +smsc911x_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
> +{
> + struct smsc911x_data *pdata;
> +
> + BUG_ON(!skb);
> + BUG_ON(!dev);
> + BUG_ON(!netdev_priv(dev));
More bullshit bugon. Why the silly wrapper func?
> + pdata = netdev_priv(dev);
> + smsc911x_tx_sendskb(pdata, skb);
> + return 0;
> +}
...
> + platform_set_drvdata(pdev, netdev);
> + strcpy(netdev->name, "eth%d");
Already done by alloc_etherdev...
> + retval = register_netdev(netdev);
> +
> + if (retval) {
> + SMSC_WARNING("Error %i registering device", retval);
> + retval = -ENODEV;
> + goto out_unmap_io;
> + } else {
> + SMSC_TRACE("Network interface: \"%s\"",netdev->name);
> + }
> +
> + if ((retval = smsc911x_init(netdev)) < 0)
> + goto out_deregister_netdev;
Please init before registering. Because during registration it is
possible that some callback would want to bring up the device automatically,
or send a packet.
> + if (request_irq(netdev->irq, smsc911x_irqhandler,
> + SA_INTERRUPT, SMSC_CHIPNAME, netdev_priv(netdev)) != 0) {
> + SMSC_WARNING("Unable to claim requested irq: %d", netdev->irq);
> + retval = -ENODEV;
> + goto out_deregister_netdev;
> + }
You must have the IRQ in place before registering.
> + return 0;
> +
> +out_deregister_netdev:
> + unregister_netdev(netdev);
> +out_unmap_io:
> + platform_set_drvdata(pdev, NULL);
> + iounmap((void *) base);
> +out_free_netdev:
> + rx_tasklet_parameter = 0;
> + free_netdev(netdev);
> +out_release_io:
> + release_mem_region(res->start, res->end - res->start);
> +out:
> + return retval;
> +}
> +
> diff --git a/drivers/net/smsc911x.h b/drivers/net/smsc911x.h
> new file mode 100644
> index 0000000..5ab2987
> --- /dev/null
> +++ b/drivers/net/smsc911x.h
> @@ -0,0 +1,526 @@
> +#ifndef __SMSC911X_H__
> +#define __SMSC911X_H__
> +
> +#define USE_PHY_WORK_AROUND
> +#define USE_LED1_WORK_AROUND /* 10/100 LED link-state inversion */
> +
> +/* Debugging */
> +#define USE_DEBUG 0
> +#if USE_DEBUG >= 1
> +# define SMSC_WARNING(fmt, args...) \
> + printk(KERN_EMERG "SMSC_WARNING: %s: " fmt "\n",\
> + __FUNCTION__ , ## args)
> +#else
> +# define SMSC_WARNING(msg, args...)
> +#endif /* USE_DEBUG >= 1 */
Consider using pr_debug and the ethtool message level model.
> +#if USE_DEBUG >= 2
> +# define SMSC_TRACE(fmt,args...) \
> + printk(KERN_EMERG "SMSC_TRACE: %s: " fmt "\n", \
> + __FUNCTION__ , ## args)
> +#else
> +# define SMSC_TRACE(msg,args...)
> +#endif /* USE_DEBUG >= 2 */
--
Stephen Hemminger <shemminger@osdl.org>
"And in the Packet there writ down that doome"
^ permalink raw reply [flat|nested] 20+ messages in thread
* SMSC LAN911x and LAN921x vendor driver
2006-07-14 18:50 ` smsc911x driver Stephen Hemminger
@ 2006-07-28 11:48 ` Steve Glendinning
2006-07-28 14:31 ` Stephen Hemminger
2006-07-28 21:38 ` Francois Romieu
0 siblings, 2 replies; 20+ messages in thread
From: Steve Glendinning @ 2006-07-28 11:48 UTC (permalink / raw)
To: netdev; +Cc: Ian Saturley, Bahadir Balban, Stephen Hemminger,
Steve Glendinning
> Attached is a driver patch for SMSC911x family of ethernet chips,
> generated against 2.6.18-rc1 sources. There's a similar driver in the
> tree; this one has been tested by SMSC on all flavors of the chip and
> claimed to be efficient.
Updated after feedback from Stephen Hemminger.
Driver updated to also support LAN921x family. Workarounds added for
known hardware issues.
Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com>
---
drivers/net/Kconfig | 7
drivers/net/Makefile | 1
drivers/net/smsc911x.c | 2289 ++++++++++++++++++++++++++++++++++++++++++++++++
drivers/net/smsc911x.h | 504 +++++++++++
4 files changed, 2801 insertions(+), 0 deletions(-)
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 3918990..7e1fff2 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -865,6 +865,13 @@ config NET_NETX
<file:Documentation/networking/net-modules.txt>. The module
will be called netx-eth.
+config SMSC911X
+ tristate "SMSC 911x family of embedded ethernet support"
+ depends on NET_ETHERNET
+ ---help---
+ Say Y here if you want support for SMSC LAN911x family
+ of ethernet chips.
+
config DM9000
tristate "DM9000 support"
depends on (ARM || MIPS) && NET_ETHERNET
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index c91e951..51f680b 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -196,6 +196,7 @@ obj-$(CONFIG_S2IO) += s2io.o
obj-$(CONFIG_MYRI10GE) += myri10ge/
obj-$(CONFIG_SMC91X) += smc91x.o
obj-$(CONFIG_SMC911X) += smc911x.o
+obj-$(CONFIG_SMSC911X) += smsc911x.o
obj-$(CONFIG_DM9000) += dm9000.o
obj-$(CONFIG_FEC_8XX) += fec_8xx/
diff --git a/drivers/net/smsc911x.c b/drivers/net/smsc911x.c
new file mode 100644
index 0000000..12bbe67
--- /dev/null
+++ b/drivers/net/smsc911x.c
@@ -0,0 +1,2289 @@
+/***************************************************************************
+ *
+ * Copyright (C) 2004-2005 SMSC
+ * Copyright (C) 2005 ARM
+ *
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ ***************************************************************************
+ * Rewritten, heavily based on smsc911x simple driver by SMSC.
+ * Partly uses io macros from smc91x.c by Nicolas Pitre
+ *
+ * History:
+ * 05/05/2005 bahadir.balban@arm.com
+ * - Transition to linux coding style
+ * - Platform driver and module interface
+ *
+ * 17/07/2006 steve.glendinning@smsc.com
+ * - Added support for LAN921x family
+ * - Added workaround for multicast filters
+ */
+
+#include <linux/config.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/etherdevice.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/mii.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/platform_device.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/timer.h>
+#include <linux/version.h>
+#include <asm/bug.h>
+#include <asm/bitops.h>
+#include <asm/dma.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+#include "smsc911x.h"
+
+#define SMSC_CHIPNAME "smsc911x"
+
+/* Tasklet declarations */
+static unsigned long rx_tasklet_parameter;
+static void smsc911x_rx_tasklet(unsigned long data);
+
+DECLARE_TASKLET(rx_tasklet, smsc911x_rx_tasklet, 0);
+MODULE_LICENSE("GPL");
+
+/* MAC */
+static int smsc911x_mac_notbusy(struct smsc911x_data *pdata);
+
+static unsigned int smsc911x_mac_read(struct smsc911x_data *pdata,
+ unsigned int offset);
+
+static void smsc911x_mac_write(struct smsc911x_data *pdata,
+ unsigned int offset, unsigned int value);
+
+/* PHY layer */
+static int smsc911x_phy_reset(struct smsc911x_data *pdata);
+static int smsc911x_phy_initialise_external(struct smsc911x_data *pdata);
+static int smsc911x_phy_initialise(struct smsc911x_data *pdata);
+static void smsc911x_phy_setlink(struct smsc911x_data *pdata);
+static unsigned int smsc911x_phy_read(struct smsc911x_data *pdata,
+ unsigned int offset);
+
+static void smsc911x_phy_write(struct smsc911x_data *pdata,
+ unsigned int offset, unsigned int value);
+
+static void smsc911x_phy_upd_lmode_fd(struct smsc911x_data *pdata,
+ unsigned int, unsigned int);
+
+static void smsc911x_phy_update_linkmode(struct smsc911x_data *pdata);
+static void smsc911x_phy_getlinkmode(struct smsc911x_data *pdata);
+static void smsc911x_phy_checklink(unsigned long);
+static int smsc911x_phy_check_loopbackpkt(struct smsc911x_data *pdata);
+static int smsc911x_phy_loopbacktest(struct smsc911x_data *pdata);
+
+/* Transmit */
+static void smsc911x_tx_initialise(struct smsc911x_data *pdata);
+static void smsc911x_tx_writefifo(struct smsc911x_data *pdata,
+ unsigned int *bufp, unsigned int size);
+
+static inline unsigned int smsc911x_tx_get_txstatcount(struct smsc911x_data
+ *pdata);
+static unsigned int smsc911x_tx_completetx(struct smsc911x_data *pdata);
+
+static inline int smsc911x_tx_handleirq(struct smsc911x_data *pdata,
+ unsigned int irqstatus);
+
+static void smsc911x_tx_update_txcounters(struct smsc911x_data *pdata);
+
+/* Receive */
+static void smsc911x_rx_initialise(struct smsc911x_data *pdata);
+static void smsc911x_rx_readfifo(struct smsc911x_data *pdata,
+ unsigned int *bufp, unsigned int size);
+
+static void smsc911x_rx_handoffskb(struct smsc911x_data *pdata,
+ struct sk_buff *skb);
+
+static unsigned int smsc911x_rx_pop_rxstatus(struct smsc911x_data *pdata);
+static void smsc911x_rx_counterrors(struct smsc911x_data *pdata,
+ unsigned int rxstatus);
+
+static void smsc911x_rx_fastforward(struct smsc911x_data *pdata,
+ unsigned int size);
+
+static void smsc911x_rx_processpackets(struct smsc911x_data *pdata);
+static int smsc911x_rx_handleirq(struct smsc911x_data *pdata,
+ unsigned int intstat);
+
+static unsigned int smsc911x_hash(char addr[]);
+static void smsc911x_rx_multicast_update(struct smsc911x_data *pdata);
+
+/* LAN initialisation */
+static int smsc911x_lan_initialise(struct smsc911x_data *pdata,
+ unsigned int intcfg);
+
+/* Linux network device interface */
+static int smsc911x_init(struct net_device *dev);
+static int smsc911x_open(struct net_device *dev);
+static int smsc911x_stop(struct net_device *dev);
+static int smsc911x_hard_start_xmit(struct sk_buff *skb,
+ struct net_device *dev);
+
+static struct net_device_stats *smsc911x_get_stats(struct net_device *dev);
+static void smsc911x_set_multicast_list(struct net_device *dev);
+static irqreturn_t smsc911x_irqhandler(int irq, void *dev_id,
+ struct pt_regs *regs);
+
+/* Module interface */
+static int smsc911x_init_module(void);
+static void smsc911x_cleanup_module(void);
+
+/* Driver interface */
+static int smsc911x_drv_probe(struct platform_device *pdev);
+static int smsc911x_drv_remove(struct platform_device *pdev);
+
+/* Entry point for starting/opening the interface */
+static int smsc911x_open(struct net_device *dev)
+{
+ struct smsc911x_data *pdata;
+ unsigned int mac_high16;
+ unsigned int mac_low32;
+ unsigned int timeout;
+ unsigned int intcfg;
+ int result;
+
+ /* Set interrupt deassertion to 220uS */
+ intcfg = 22 << 24;
+ timeout = 1000;
+ result = -ENODEV;
+
+ pdata = netdev_priv(dev);
+
+ /* Initialise smsc911x */
+
+ /*
+ * dwIntCfg|=INT_CFG_IRQ_POL_; use this to set IRQ_POL bit
+ * dwIntCfg|=INT_CFG_IRQ_TYPE_; use this to set IRQ_TYPE bit
+ */
+ if (!smsc911x_lan_initialise(pdata, intcfg))
+ goto done;
+
+ SMSC_TRACE("Testing irq handler using IRQ %d", dev->irq);
+ pdata->request_irq_disable = 0;
+ pdata->software_irq_signal = 0;
+ smsc911x_reg_write((smsc911x_reg_read(pdata, INT_EN) |
+ INT_EN_SW_INT_EN_), pdata, INT_EN);
+ do {
+ udelay(10);
+ timeout--;
+ } while (timeout && (!pdata->software_irq_signal));
+
+ if (!pdata->software_irq_signal) {
+ printk("<1>ISR failed signaling test.");
+ result = -ENODEV;
+ goto done;
+ }
+ SMSC_TRACE("IRQ handler passed test using IRQ %d", dev->irq);
+
+ printk("%s: SMSC911x/921x identified at %#08x, IRQ: %d\n", dev->name,
+ pdata->base, dev->irq);
+
+ /* Read mac address from EEPROM */
+ mac_high16 = smsc911x_mac_read(pdata, ADDRH);
+ mac_low32 = smsc911x_mac_read(pdata, ADDRL);
+
+ /* Generate random MAC address if eeprom values are invalid */
+ if ((mac_high16 == 0x0000FFFF) && (mac_low32 == 0xFFFFFFFF)) {
+ u8 random_mac[6];
+ random_ether_addr(random_mac);
+ mac_high16 = (random_mac[5] << 8) | random_mac[4];
+ mac_low32 = (random_mac[3] << 24) | (random_mac[2] << 16) |
+ (random_mac[1] << 8) | random_mac[0];
+
+ smsc911x_mac_write(pdata, ADDRH, mac_high16);
+ smsc911x_mac_write(pdata, ADDRL, mac_low32);
+ SMSC_TRACE("MAC Address is set to random_ether_addr");
+ } else {
+ SMSC_TRACE("Mac Address is read from LAN911x EEPROM");
+ }
+
+ dev->dev_addr[0] = (u8)(mac_low32);
+ dev->dev_addr[1] = (u8)(mac_low32 >> 8);
+ dev->dev_addr[2] = (u8)(mac_low32 >> 16);
+ dev->dev_addr[3] = (u8)(mac_low32 >> 24);
+ dev->dev_addr[4] = (u8)(mac_high16);
+ dev->dev_addr[5] = (u8)(mac_high16 >> 8);
+ printk("%s: SMSC911x MAC Address: %02x:%02x:%02x:%02x:%02x:%02x\n",
+ dev->name, dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
+ dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
+
+ netif_carrier_off(dev);
+ if (!smsc911x_phy_initialise(pdata)) {
+ SMSC_WARNING("Failed to initialize PHY");
+ result = -ENODEV;
+ goto done;
+ }
+
+ smsc911x_tx_initialise(pdata);
+ smsc911x_rx_initialise(pdata);
+ netif_start_queue(dev);
+
+ result = 0;
+
+done:
+ SMSC_TRACE("result: %d", result);
+ return result;
+}
+
+/* Entry point for stopping the interface */
+static int smsc911x_stop(struct net_device *dev)
+{
+ unsigned long flags;
+ unsigned long base;
+ unsigned long idrev;
+ struct smsc911x_data *pdata;
+ struct net_device *pnetdev;
+
+ pdata = netdev_priv(dev);
+
+ pdata->stop_link_poll = 1;
+ del_timer_sync(&pdata->link_poll_timer);
+
+ spin_lock_irqsave(&dev->_xmit_lock, flags);
+ smsc911x_reg_write((smsc911x_reg_read(pdata, INT_CFG) &
+ (~INT_CFG_IRQ_EN_)), pdata, INT_CFG);
+ netif_stop_queue(pdata->dev);
+ spin_unlock_irqrestore(&dev->_xmit_lock, flags);
+
+ /* At this point all Rx and Tx activity is stopped */
+ pdata->stats.rx_dropped += smsc911x_reg_read(pdata, RX_DROP);
+ smsc911x_tx_update_txcounters(pdata);
+
+ /* Preserve important fields */
+ base = pdata->base;
+ idrev = pdata->idrev;
+ pnetdev = pdata->dev;
+
+ /* Clear all structure */
+ memset((void *)pdata, 0, sizeof(struct smsc911x_data));
+
+ /* Reassign important fields */
+ pdata->base = base;
+ pdata->idrev = idrev;
+ pdata->dev = pnetdev;
+
+ SMSC_TRACE("<--Simp911x_stop");
+ return 0;
+}
+
+/* Entry point for transmitting a packet */
+static int smsc911x_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct smsc911x_data *pdata;
+ unsigned int freespace;
+ unsigned int tx_cmd_a;
+ unsigned int tx_cmd_b;
+ unsigned int temp;
+ u32 wrsz;
+ u32 bufp;
+
+ pdata = netdev_priv(dev);
+
+ freespace = smsc911x_reg_read(pdata, TX_FIFO_INF) & TX_FIFO_INF_TDFREE_;
+
+ if (unlikely(freespace < TX_FIFO_LOW_THRESHOLD))
+ SMSC_WARNING("Tx data fifo low, space available: %d",
+ freespace);
+
+ /* Word alignment adjustment */
+ tx_cmd_a = ((((unsigned int)(skb->data)) & 0x03) << 16);
+ tx_cmd_a |= TX_CMD_A_FIRST_SEG_ | TX_CMD_A_LAST_SEG_;
+ tx_cmd_a |= (unsigned int)skb->len;
+
+ tx_cmd_b = ((unsigned int)skb->len) << 16;
+ tx_cmd_b |= (unsigned int)skb->len;
+
+ smsc911x_reg_write(tx_cmd_a, pdata, TX_DATA_FIFO);
+ smsc911x_reg_write(tx_cmd_b, pdata, TX_DATA_FIFO);
+
+ bufp = ((u32)skb->data) & 0xFFFFFFFC;
+ wrsz = (u32)skb->len + 3;
+ wrsz += ((u32)skb->data) & 0x3;
+ wrsz >>= 2;
+
+ smsc911x_tx_writefifo(pdata, (unsigned int *)bufp, wrsz);
+
+ freespace -= (skb->len + 32);
+ dev_kfree_skb(skb);
+
+ if (unlikely(smsc911x_tx_get_txstatcount(pdata) >= 30))
+ smsc911x_tx_update_txcounters(pdata);
+
+ if (freespace < TX_FIFO_LOW_THRESHOLD) {
+ netif_stop_queue(pdata->dev);
+ temp = smsc911x_reg_read(pdata, FIFO_INT);
+ temp &= 0x00FFFFFF;
+ temp |= 0x32000000;
+ smsc911x_reg_write(temp, pdata, FIFO_INT);
+ }
+
+ return 0;
+}
+
+/* Entry point for getting status counters */
+static struct net_device_stats *smsc911x_get_stats(struct net_device *dev)
+{
+ struct smsc911x_data *pdata;
+ pdata = netdev_priv(dev);
+ return &pdata->stats;
+}
+
+/* Entry point for setting addressing modes */
+static void smsc911x_set_multicast_list(struct net_device *dev)
+{
+ struct smsc911x_data *pdata;
+ unsigned long flags;
+
+ pdata = netdev_priv(dev);
+
+ spin_lock_irqsave(&pdata->phy_lock, flags);
+
+ if (dev->flags & IFF_PROMISC) {
+ /* Enabling promiscuous mode */
+ pdata->set_bits_mask = MAC_CR_PRMS_;
+ pdata->clear_bits_mask = (MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
+ pdata->hashhi = 0;
+ pdata->hashlo = 0;
+ goto prepare;
+ }
+
+ if (dev->flags & IFF_ALLMULTI) {
+ /* Enabling all multicast mode */
+ pdata->set_bits_mask = MAC_CR_MCPAS_;
+ pdata->clear_bits_mask = (MAC_CR_PRMS_ | MAC_CR_HPFILT_);
+ pdata->hashhi = 0;
+ pdata->hashlo = 0;
+ goto prepare;
+ }
+ if (dev->mc_count > 0) {
+ /* Enabling specific multicast addresses */
+ unsigned int hash_high = 0;
+ unsigned int hash_low = 0;
+ unsigned int count = 0;
+ struct dev_mc_list *mc_list = dev->mc_list;
+
+ pdata->set_bits_mask = MAC_CR_HPFILT_;
+ pdata->clear_bits_mask = (MAC_CR_PRMS_ | MAC_CR_MCPAS_);
+
+ while (mc_list) {
+ count++;
+ if ((mc_list->dmi_addrlen) == 6) {
+ unsigned int mask = 0x01;
+ unsigned int bitnum;
+ bitnum = smsc911x_hash(mc_list->dmi_addr);
+ mask <<= (bitnum & 0x1F);
+ if (bitnum & 0x20) {
+ hash_high |= mask;
+ } else {
+ hash_low |= mask;
+ }
+ } else {
+ SMSC_WARNING("dmi_addrlen != 6");
+ }
+ mc_list = mc_list->next;
+ }
+ if (count != (unsigned int)dev->mc_count)
+ SMSC_WARNING("mc_count != dev->mc_count");
+
+ pdata->hashhi = hash_high;
+ pdata->hashlo = hash_low;
+ } else {
+ /* Enabling local MAC address only */
+ pdata->set_bits_mask = 0L;
+ pdata->clear_bits_mask =
+ (MAC_CR_PRMS_ | MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
+ pdata->hashhi = 0UL;
+ pdata->hashlo = 0UL;
+ }
+
+ prepare:
+
+ if (pdata->generation <= 1) {
+ if (pdata->multicast_update_pending == 0) {
+ pdata->multicast_update_pending = 1;
+
+ /* signal software interrupt */
+ pdata->request_irq_disable = 0;
+ pdata->software_irq_signal = 0;
+ smsc911x_reg_write((smsc911x_reg_read(pdata, INT_EN) |
+ INT_EN_SW_INT_EN_), pdata, INT_EN);
+ } else {
+ /* Rx_CompleteMulticastUpdate has not yet been called
+ * therefore these latest settings will be used instead */
+ }
+ } else {
+ /* Newer revision - can write immediately */
+ unsigned int mac_cr = smsc911x_mac_read(pdata, MAC_CR);
+ mac_cr |= pdata->set_bits_mask;
+ mac_cr &= ~(pdata->clear_bits_mask);
+ smsc911x_mac_write(pdata, MAC_CR, mac_cr);
+ smsc911x_mac_write(pdata, HASHH, pdata->hashhi);
+ smsc911x_mac_write(pdata, HASHL, pdata->hashlo);
+ }
+
+ spin_unlock_irqrestore(&pdata->phy_lock, flags);
+ return;
+}
+
+static irqreturn_t
+smsc911x_irqhandler(int irq, void *dev_id, struct pt_regs *regs)
+{
+ unsigned int intcfg;
+ unsigned int intsts;
+ int serviced;
+ unsigned int reserved_bits;
+ struct smsc911x_data *pdata;
+
+ intcfg = 0;
+ intsts = 0;
+ serviced = IRQ_NONE;
+ reserved_bits = 0x00FFCEEE;
+
+ pdata = (struct smsc911x_data *)dev_id;
+ BUG_ON(!pdata);
+
+ intcfg = smsc911x_reg_read(pdata, INT_CFG);
+
+ if (unlikely((intcfg & 0x00001100) != 0x00001100)) {
+ SMSC_TRACE("Spurious interrupt, intcfg: 0x%08X", intcfg);
+ goto done;
+ }
+
+ /* this could mean surprise removal */
+ if (unlikely(intcfg & reserved_bits)) {
+ SMSC_WARNING("SMSC911x irq handler, reserved bits are high.");
+ goto done;
+ }
+
+ intsts = smsc911x_reg_read(pdata, INT_STS);
+ if (unlikely(intsts & INT_STS_SW_INT_)) {
+ smsc911x_reg_write((smsc911x_reg_read(pdata, INT_EN)
+ & (~INT_EN_SW_INT_EN_)), pdata, INT_EN);
+ smsc911x_reg_write(INT_STS_SW_INT_, pdata, INT_STS);
+ pdata->software_irq_signal = 1;
+ serviced = IRQ_HANDLED;
+ if (pdata->request_irq_disable) {
+ smsc911x_reg_write((smsc911x_reg_read(pdata, INT_CFG)
+ & (~INT_CFG_IRQ_EN_)), pdata,
+ INT_CFG);
+ /* Prevent irqs from being handled */
+ intsts = 0;
+ }
+ if (pdata->multicast_update_pending) {
+ smsc911x_rx_multicast_update(pdata);
+ }
+ }
+
+ if (smsc911x_tx_handleirq(pdata, intsts))
+ serviced = IRQ_HANDLED;
+
+ if (likely(smsc911x_rx_handleirq(pdata, intsts)))
+ serviced = IRQ_HANDLED;
+
+ if (unlikely(!serviced))
+ SMSC_WARNING("Unserviced irq. intcfg: 0x%08X, intsts: "
+ "0x%08X, int_en: 0x%08X", intcfg, intsts,
+ smsc911x_reg_read(pdata, INT_EN));
+ done:
+ return serviced;
+}
+
+/* Autodetects and initialises external phy for SMSC9115 and SMSC9117 flavors.
+ * If something goes wrong, returns -ENODEV to revert back to internal phy. */
+static int smsc911x_phy_initialise_external(struct smsc911x_data *pdata)
+{
+ unsigned int address;
+ unsigned int hwcfg;
+ unsigned int phyid1;
+ unsigned int phyid2;
+
+ hwcfg = smsc911x_reg_read(pdata, HW_CFG);
+
+ /* External phy is requested, supported, and detected */
+ if (hwcfg & HW_CFG_EXT_PHY_DET_) {
+
+ /* Attempt to switch to external phy for auto-detecting
+ * its address. Assuming tx and rx are stopped because
+ * smsc911x_phy_initialise is called before
+ * smsc911x_rx_initialise and tx_initialise.
+ */
+
+ /* Disable phy clocks to the MAC */
+ hwcfg &= (~HW_CFG_PHY_CLK_SEL_);
+ hwcfg |= HW_CFG_PHY_CLK_SEL_CLK_DIS_;
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+ udelay(10); /* Enough time for clocks to stop */
+
+ /* Switch to external phy */
+ hwcfg |= HW_CFG_EXT_PHY_EN_;
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+
+ /* Enable phy clocks to the MAC */
+ hwcfg &= (~HW_CFG_PHY_CLK_SEL_);
+ hwcfg |= HW_CFG_PHY_CLK_SEL_EXT_PHY_;
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+ udelay(10); /* Enough time for clocks to restart */
+
+ hwcfg |= HW_CFG_SMI_SEL_;
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+
+ /* As far as a single threaded initialisation of this driver
+ * is concerned, there is no need to acquire phy_lock.
+ */
+
+ /* Auto-detect PHY */
+ for (address = 0; address <= 31; address++) {
+ pdata->phy_address = address;
+ phyid1 = smsc911x_phy_read(pdata, PHY_ID_1);
+ phyid2 = smsc911x_phy_read(pdata, PHY_ID_2);
+ if ((phyid1 != 0xFFFFU) || (phyid2 != 0xFFFFU)) {
+ SMSC_TRACE("Detected PHY at address = "
+ "0x%02X = %d", address, address);
+ break;
+ }
+ }
+
+ if ((phyid1 == 0xFFFFU) && (phyid2 == 0xFFFFU)) {
+ SMSC_WARNING("External PHY is not accessable, "
+ "using internal PHY instead");
+ /* Revert back to interal phy settings. */
+
+ /* Disable phy clocks to the MAC */
+ hwcfg &= (~HW_CFG_PHY_CLK_SEL_);
+ hwcfg |= HW_CFG_PHY_CLK_SEL_CLK_DIS_;
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+ udelay(10); /* Enough time for clocks to stop */
+
+ /* Switch to internal phy */
+ hwcfg &= (~HW_CFG_EXT_PHY_EN_);
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+
+ /* Enable phy clocks to the MAC */
+ hwcfg &= (~HW_CFG_PHY_CLK_SEL_);
+ hwcfg |= HW_CFG_PHY_CLK_SEL_INT_PHY_;
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+ udelay(10); /* Enough time for clocks to restart */
+
+ hwcfg &= (~HW_CFG_SMI_SEL_);
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+ /* Use internal phy */
+ return -ENODEV;
+ } else {
+ SMSC_TRACE("Successfully switched to external PHY");
+#ifdef USE_LED1_WORK_AROUND
+ pdata->not_using_extphy = 0;
+#endif
+ }
+ } else {
+ SMSC_WARNING("No external PHY detected.");
+ SMSC_WARNING("Using internal PHY instead.");
+ /* Use internal phy */
+ return -ENODEV;
+ }
+ return 0;
+}
+
+/* Initialises the PHY layer */
+static int smsc911x_phy_initialise(struct smsc911x_data *pdata)
+{
+ int result = 0;
+ unsigned int phyid1 = 0;
+ unsigned int phyid2 = 0;
+
+#ifndef USE_PHY_WORK_AROUND
+ unsigned int temp = 0;
+ unsigned int loopcount = 0;
+#endif
+
+ switch (pdata->idrev & 0xFFFF0000) {
+ case 0x01170000:
+ case 0x01150000:
+ if (smsc911x_phy_initialise_external(pdata) < 0)
+ goto use_internal_phy;
+ break;
+ default:
+ SMSC_TRACE("External PHY is not supported");
+ SMSC_TRACE("Using internal PHY instead");
+ goto use_internal_phy;
+ }
+ use_internal_phy:
+ pdata->phy_address = 1;
+#ifdef USE_LED1_WORK_AROUND
+ pdata->not_using_extphy = 1;
+#endif
+
+ /* Single threaded initialisation so no need to grab phy_lock. */
+ phyid1 = smsc911x_phy_read(pdata, PHY_ID_1);
+ phyid2 = smsc911x_phy_read(pdata, PHY_ID_2);
+
+ if ((phyid1 == 0xFFFF) && (phyid2 == 0xFFFF)) {
+ SMSC_WARNING("Internal PHY not detected!");
+ goto done;
+ }
+
+ pdata->link_speed = LINK_OFF;
+ pdata->link_settings = LINK_OFF;
+
+ /* Reset the phy */
+#ifdef USE_PHY_WORK_AROUND
+ smsc911x_phy_reset(pdata);
+ if (!smsc911x_phy_loopbacktest(pdata)) {
+ SMSC_WARNING("Failed Loop Back Test");
+ goto done;
+ } else {
+ SMSC_TRACE("Passed Loop Back Test");
+ }
+#else
+ smsc911x_phy_write(pdata, PHY_BCR, PHY_BCR_RESET_);
+ loopcount = 100000;
+ do {
+ udelay(10);
+ temp = smsc911x_phy_read(pdata, PHY_BCR);
+ loopcount--;
+ } while ((loopcount > 0) && (temp & PHY_BCR_RESET_));
+ if (temp & PHY_BCR_RESET_) {
+ SMSC_WARNING("PHY reset failed to complete.");
+ goto done;
+ }
+#endif /* not USE_PHY_WORK_AROUND */
+
+ smsc911x_phy_setlink(pdata);
+ init_timer(&pdata->link_poll_timer);
+ pdata->link_poll_timer.function = smsc911x_phy_checklink;
+ pdata->link_poll_timer.data = (unsigned long)pdata;
+ pdata->link_poll_timer.expires = jiffies + HZ;
+ add_timer(&pdata->link_poll_timer);
+ result = 1;
+ done:
+ SMSC_TRACE("smsc911x_phy_initialise, result: %s", result ?
+ "SUCCESS" : "FAILURE");
+ return result;
+}
+
+#ifdef USE_PHY_WORK_AROUND
+static int smsc911x_phy_reset(struct smsc911x_data *pdata)
+{
+ int result = 0;
+ unsigned int temp = 0;
+ unsigned int lcount = 100000;
+
+ SMSC_TRACE("Performing PHY BCR Reset");
+ smsc911x_phy_write(pdata, PHY_BCR, PHY_BCR_RESET_);
+ do {
+ udelay(10);
+ temp = smsc911x_phy_read(pdata, PHY_BCR);
+ lcount--;
+ } while ((lcount > 0) && (temp & PHY_BCR_RESET_));
+
+ if (temp & PHY_BCR_RESET_) {
+ SMSC_WARNING("PHY reset failed to complete.");
+ goto done;
+ }
+ /* Extra delay required because the phy may not be completed with
+ * its reset when PHY_BCR_RESET_ is cleared. Specs say 256 uS is
+ * enough delay but using 500 here to be safe
+ */
+ udelay(500);
+ result = 1;
+ done:
+ return result;
+}
+
+static unsigned int smsc911x_phy_lbt_gettxstatus(struct smsc911x_data *pdata)
+{
+ unsigned int result =
+ (smsc911x_reg_read(pdata, TX_FIFO_INF) & TX_FIFO_INF_TSUSED_);
+
+ if (result != 0) {
+ /* Tx status is available, read it */
+ result = smsc911x_reg_read(pdata, TX_STATUS_FIFO);
+ }
+
+ return result;
+}
+
+static unsigned int smsc911x_phy_lbt_getrxstatus(struct smsc911x_data *pdata)
+{
+ unsigned int result =
+ (smsc911x_reg_read(pdata, RX_FIFO_INF) & RX_FIFO_INF_RXSUSED_);
+
+ if (result != 0) {
+ /* Rx status is available, read it */
+ result = smsc911x_reg_read(pdata, RX_STATUS_FIFO);
+ }
+
+ return result;
+}
+
+static int smsc911x_phy_check_loopbackpkt(struct smsc911x_data *pdata)
+{
+ int result = 0;
+ unsigned int tries = 0;
+ unsigned int lcount = 0;
+ u32 wrsz;
+ u32 rdsz;
+ u32 bufp;
+
+ for (tries = 0; tries < 10; tries++) {
+ unsigned int txcmd_a = 0;
+ unsigned int txcmd_b = 0;
+ unsigned int status = 0;
+ unsigned int pktlength = 0;
+
+ /* Zero-out rx packet memory */
+ memset(pdata->loopback_rx_pkt, 0, MIN_PACKET_SIZE);
+
+ /* Write tx packet to 118 */
+ txcmd_a = (((unsigned int)pdata->loopback_tx_pkt)
+ & 0x03) << 16;
+ txcmd_a |= TX_CMD_A_FIRST_SEG_ | TX_CMD_A_LAST_SEG_;
+ txcmd_a |= MIN_PACKET_SIZE;
+
+ txcmd_b = MIN_PACKET_SIZE << 16 | MIN_PACKET_SIZE;
+
+ smsc911x_reg_write(txcmd_a, pdata, TX_DATA_FIFO);
+ smsc911x_reg_write(txcmd_b, pdata, TX_DATA_FIFO);
+
+ bufp = ((u32) pdata->loopback_tx_pkt) & 0xFFFFFFFC;
+ wrsz = MIN_PACKET_SIZE + 3;
+ wrsz += (((u32) pdata->loopback_tx_pkt) & 0x3);
+ wrsz >>= 2;
+
+ smsc911x_tx_writefifo(pdata, (unsigned int *)bufp, wrsz);
+
+ /* Wait till transmit is done */
+ lcount = 60;
+ do {
+ udelay(5);
+ lcount--;
+ status = smsc911x_phy_lbt_gettxstatus(pdata);
+ } while ((lcount > 0) && (status == 0));
+
+ if (status == 0) {
+ SMSC_WARNING("Failed to transmit during "
+ "loopback test");
+ continue;
+ }
+ if (status & 0x00008000) {
+ SMSC_WARNING("Transmit encountered errors "
+ "during loopback test");
+ continue;
+ }
+
+ /* Wait till receive is done */
+ lcount = 60;
+ do {
+ udelay(5);
+ lcount--;
+ status = smsc911x_phy_lbt_getrxstatus(pdata);
+ } while ((lcount > 0) && (status == 0));
+
+ if (status == 0) {
+ SMSC_WARNING("Failed to receive during "
+ "loopback test");
+ continue;
+ }
+ if (status & RX_STS_ES_) {
+ SMSC_WARNING("Receive encountered errors "
+ "during loopback test");
+ continue;
+ }
+
+ pktlength = ((status & 0x3FFF0000UL) >> 16);
+
+ bufp = (u32)pdata->loopback_rx_pkt;
+ rdsz = pktlength + 3;
+ rdsz += ((u32)pdata->loopback_rx_pkt) & 0x3;
+ rdsz >>= 2;
+
+ smsc911x_rx_readfifo(pdata, (unsigned int *)bufp, rdsz);
+
+ if (pktlength != (MIN_PACKET_SIZE + 4)) {
+ SMSC_WARNING("Unexpected packet size during "
+ "loop back test, size=%d, "
+ "will retry", pktlength);
+ } else {
+ unsigned int index = 0;
+ int mismatch = 0;
+ for (index = 0; index < MIN_PACKET_SIZE; index++) {
+ if (pdata->loopback_tx_pkt[index]
+ != pdata->loopback_rx_pkt[index]) {
+ mismatch = 1;
+ break;
+ }
+ }
+ if (!mismatch) {
+ SMSC_TRACE("Successfully verified "
+ "loopback packet");
+ result = 1;
+ goto done;
+ } else {
+ SMSC_WARNING("Data miss match during "
+ "loop back test, will retry.");
+ }
+ }
+ }
+ done:
+ return result;
+}
+
+static int smsc911x_phy_loopbacktest(struct smsc911x_data *pdata)
+{
+ int result = 0;
+ unsigned int index = 0;
+ unsigned int tries = 0;
+ unsigned int val;
+
+ /* Initialise tx packet */
+ for (index = 0; index < 6; index++) {
+ /* Use broadcast destination address */
+ pdata->loopback_tx_pkt[index] = (char)0xFF;
+ }
+
+ for (index = 6; index < 12; index++) {
+ /* Use incrementing source address */
+ pdata->loopback_tx_pkt[index] = (char)index;
+ }
+
+ /* Set length type field */
+ pdata->loopback_tx_pkt[12] = 0x00;
+ pdata->loopback_tx_pkt[13] = 0x00;
+ for (index = 14; index < MIN_PACKET_SIZE; index++) {
+ pdata->loopback_tx_pkt[index] = (char)index;
+ }
+
+ val = smsc911x_reg_read(pdata, HW_CFG);
+ val &= HW_CFG_TX_FIF_SZ_;
+ val |= HW_CFG_SF_;
+ smsc911x_reg_write(val, pdata, HW_CFG);
+
+ smsc911x_reg_write(TX_CFG_TX_ON_, pdata, TX_CFG);
+ smsc911x_reg_write((((unsigned int)pdata->loopback_rx_pkt)
+ & 0x03) << 8, pdata, RX_CFG);
+
+ /* Set PHY to 10/FD, no ANEG, */
+ smsc911x_phy_write(pdata, PHY_BCR, 0x0100);
+
+ /* Enable MAC tx/rx, FD */
+ smsc911x_mac_write(pdata, MAC_CR, MAC_CR_FDPX_
+ | MAC_CR_TXEN_ | MAC_CR_RXEN_);
+
+ /* Set PHY to loopback mode */
+ smsc911x_phy_write(pdata, PHY_BCR, 0x4100);
+
+ for (tries = 0; tries < 10; tries++) {
+ if (smsc911x_phy_check_loopbackpkt(pdata)) {
+ result = 1;
+ goto done;
+ }
+ pdata->resetcount++;
+ /* Disable MAC rx */
+ smsc911x_mac_write(pdata, MAC_CR, 0);
+ smsc911x_phy_reset(pdata);
+
+ /* Set PHY to 10/FD, no ANEG, and loopback mode */
+ smsc911x_phy_write(pdata, PHY_BCR, 0x4100);
+
+ /* Enable MAC tx/rx, FD */
+ smsc911x_mac_write(pdata, MAC_CR, MAC_CR_FDPX_
+ | MAC_CR_TXEN_ | MAC_CR_RXEN_);
+ }
+ done:
+ /* Disable MAC */
+ smsc911x_mac_write(pdata, MAC_CR, 0);
+
+ /* Cancel PHY loopback mode */
+ smsc911x_phy_write(pdata, PHY_BCR, 0);
+
+ smsc911x_reg_write(0, pdata, TX_CFG);
+ smsc911x_reg_write(0, pdata, RX_CFG);
+
+ return result;
+}
+#endif /* USE_PHY_WORK_AROUND */
+
+/* Sets the link mode */
+static void smsc911x_phy_setlink(struct smsc911x_data *pdata)
+{
+ unsigned int temp;
+
+ /* Because this is part of the single threaded initialization
+ * path there is no need to acquire the phy_lock
+ */
+ temp = smsc911x_phy_read(pdata, PHY_ANEG_ADV);
+
+ /* Advertise all speeds and pause capabilities */
+ temp |= (PHY_ANEG_ADV_PAUSE_ | PHY_ANEG_ADV_SPEED_);
+ smsc911x_phy_write(pdata, PHY_ANEG_ADV, temp);
+
+ /* begin to establish link */
+ smsc911x_phy_write(pdata, PHY_BCR, PHY_BCR_AUTO_NEG_ENABLE_ |
+ PHY_BCR_RESTART_AUTO_NEG_);
+ return;
+}
+
+/* NOTE: Assuming phy_lock has already been acquired.
+ * Gets the current link mode
+ */
+static void smsc911x_phy_getlinkmode(struct smsc911x_data *pdata)
+{
+ unsigned int result = LINK_OFF;
+ unsigned int phy_reg = 0;
+ unsigned int phy_bsr = 0;
+
+ phy_bsr = smsc911x_phy_read(pdata, PHY_BSR);
+
+ pdata->link_settings = LINK_OFF;
+ if (phy_bsr & PHY_BSR_LINK_STATUS_) {
+ phy_reg = smsc911x_phy_read(pdata, PHY_BCR);
+ if (phy_reg & PHY_BCR_AUTO_NEG_ENABLE_) {
+ unsigned int linksettings = LINK_AUTO_NEGOTIATE;
+ unsigned int phy_adv =
+ smsc911x_phy_read(pdata, PHY_ANEG_ADV);
+ unsigned int phy_lpa =
+ smsc911x_phy_read(pdata, PHY_ANEG_LPA);
+ if (phy_adv & PHY_ANEG_ADV_ASYMP_)
+ linksettings |= LINK_ASYMMETRIC_PAUSE;
+ if (phy_adv & PHY_ANEG_ADV_SYMP_)
+ linksettings |= LINK_SYMMETRIC_PAUSE;
+ if (phy_adv & PHY_ANEG_LPA_100FDX_)
+ linksettings |= LINK_SPEED_100FD;
+ if (phy_adv & PHY_ANEG_LPA_100HDX_)
+ linksettings |= LINK_SPEED_100HD;
+ if (phy_adv & PHY_ANEG_LPA_10FDX_)
+ linksettings |= LINK_SPEED_10FD;
+ if (phy_adv & PHY_ANEG_LPA_10HDX_)
+ linksettings |= LINK_SPEED_10HD;
+
+ pdata->link_settings = linksettings;
+ phy_lpa &= phy_adv;
+
+ if (phy_lpa & PHY_ANEG_LPA_100FDX_)
+ result = LINK_SPEED_100FD;
+ else if (phy_lpa & PHY_ANEG_LPA_100HDX_)
+ result = LINK_SPEED_100HD;
+ else if (phy_lpa & PHY_ANEG_LPA_10FDX_)
+ result = LINK_SPEED_10FD;
+ else if (phy_lpa & PHY_ANEG_LPA_10HDX_)
+ result = LINK_SPEED_10HD;
+ } else {
+ if (phy_reg & PHY_BCR_SPEED_SELECT_) {
+ if (phy_reg & PHY_BCR_DUPLEX_MODE_) {
+ result = LINK_SPEED_100FD;
+ pdata->link_settings = result;
+ } else {
+ result = LINK_SPEED_100HD;
+ pdata->link_settings = result;
+ }
+ } else {
+ if (phy_reg & PHY_BCR_DUPLEX_MODE_) {
+ result = LINK_SPEED_10FD;
+ pdata->link_settings = result;
+ } else {
+ result = LINK_SPEED_10HD;
+ pdata->link_settings = result;
+ }
+ }
+ }
+ }
+ pdata->link_speed = result;
+ return;
+}
+
+/* Updates link mode full-duplex */
+static void
+smsc911x_phy_upd_lmode_fd(struct smsc911x_data *pdata,
+ unsigned int locallink, unsigned int linkpartner)
+{
+ unsigned int temp;
+
+ if (((locallink & linkpartner) & 0x0400) != 0) {
+ /* Enable PAUSE receive and transmit */
+ smsc911x_mac_write(pdata, FLOW, 0xFFFF0002);
+ temp = smsc911x_reg_read(pdata, AFC_CFG);
+ temp |= 0xF;
+ smsc911x_reg_write(temp, pdata, AFC_CFG);
+
+ } else if (((locallink & 0x0C00) == 0x0C00) &&
+ ((linkpartner & 0x0C00) == 0x0800)) {
+ /* Enable PAUSE receive, disable PAUSE transmit */
+ smsc911x_mac_write(pdata, FLOW, 0xFFFF0002);
+ temp = smsc911x_reg_read(pdata, AFC_CFG);
+ temp &= ~0xF;
+ smsc911x_reg_write(temp, pdata, AFC_CFG);
+
+ } else {
+ /* Disable PAUSE receive and transmit */
+ smsc911x_mac_write(pdata, FLOW, 0);
+ temp = smsc911x_reg_read(pdata, AFC_CFG);
+ temp &= ~0xF;
+ smsc911x_reg_write(temp, pdata, AFC_CFG);
+ }
+ return;
+}
+
+static void smsc911x_phy_print_linkmode(unsigned int locallink,
+ unsigned int linkpartner)
+{
+ SMSC_TRACE("LAN911x: %s,%s,%s,%s,%s,%s",
+ (locallink & PHY_ANEG_ADV_ASYMP_) ? "ASYMP" : " ",
+ (locallink & PHY_ANEG_ADV_SYMP_) ? "SYMP " : " ",
+ (locallink & PHY_ANEG_ADV_100F_) ? "100FD" : " ",
+ (locallink & PHY_ANEG_ADV_100H_) ? "100HD" : " ",
+ (locallink & PHY_ANEG_ADV_10F_) ? "10FD " : " ",
+ (locallink & PHY_ANEG_ADV_10H_) ? "10HD " : " ");
+
+ SMSC_TRACE("Partner: %s,%s,%s,%s,%s,%s",
+ (linkpartner & PHY_ANEG_LPA_ASYMP_) ? "ASYMP" : " ",
+ (linkpartner & PHY_ANEG_LPA_SYMP_) ? "SYMP " : " ",
+ (linkpartner & PHY_ANEG_LPA_100FDX_) ? "100FD" : " ",
+ (linkpartner & PHY_ANEG_LPA_100HDX_) ? "100HD" : " ",
+ (linkpartner & PHY_ANEG_LPA_10FDX_) ? "10FD " : " ",
+ (linkpartner & PHY_ANEG_LPA_10HDX_) ? "10HD " : " ");
+ return;
+}
+
+/* Update link mode if any thing has changed */
+static void smsc911x_phy_update_linkmode(struct smsc911x_data *pdata)
+{
+ unsigned int old_link_speed = pdata->link_speed;
+ unsigned int temp;
+
+ spin_lock(&pdata->phy_lock);
+ smsc911x_phy_getlinkmode(pdata);
+
+ if (old_link_speed != pdata->link_speed) {
+ if (pdata->link_speed != LINK_OFF) {
+ unsigned int phy_reg = 0;
+ switch (pdata->link_speed) {
+ case LINK_SPEED_10HD:
+ SMSC_TRACE("Link is now UP at 10Mbps HD");
+ break;
+ case LINK_SPEED_10FD:
+ SMSC_TRACE("Link is now UP at 10Mbps FD");
+ break;
+ case LINK_SPEED_100HD:
+ SMSC_TRACE("Link is now UP at 100Mbps HD");
+ break;
+ case LINK_SPEED_100FD:
+ SMSC_TRACE("Link is now UP at 100Mbps FD");
+ break;
+ default:
+ SMSC_WARNING("Link is now UP at unknown link "
+ "speed: 0x%08X",
+ pdata->link_speed);
+ break;
+ }
+ phy_reg = smsc911x_mac_read(pdata, MAC_CR);
+ phy_reg &= ~(MAC_CR_FDPX_ | MAC_CR_RCVOWN_);
+
+ switch (pdata->link_speed) {
+ case LINK_SPEED_10HD:
+ case LINK_SPEED_100HD:
+ phy_reg |= MAC_CR_RCVOWN_;
+ break;
+
+ case LINK_SPEED_10FD:
+ case LINK_SPEED_100FD:
+ phy_reg |= MAC_CR_FDPX_;
+ break;
+
+ default:
+ SMSC_WARNING("Unknown link speed: 0x%08X",
+ pdata->link_speed);
+ break;
+ }
+
+ smsc911x_mac_write(pdata, MAC_CR, phy_reg);
+
+ if (pdata->link_settings & LINK_AUTO_NEGOTIATE) {
+ unsigned int linkpartner = 0;
+ unsigned int locallink = 0;
+ locallink = smsc911x_phy_read(pdata, 4);
+ linkpartner = smsc911x_phy_read(pdata, 5);
+ switch (pdata->link_speed) {
+ case LINK_SPEED_10FD:
+ case LINK_SPEED_100FD:
+ smsc911x_phy_upd_lmode_fd(pdata,
+ locallink,
+ linkpartner);
+ break;
+
+ case LINK_SPEED_10HD:
+ case LINK_SPEED_100HD:
+ smsc911x_mac_write(pdata, FLOW, 0);
+ temp =
+ smsc911x_reg_read(pdata, AFC_CFG);
+ temp |= 0xF;
+ smsc911x_reg_write(temp, pdata,
+ AFC_CFG);
+ break;
+
+ default:
+ SMSC_WARNING("Unknown link speed: "
+ "0x%08X\n",
+ pdata->link_speed);
+ break;
+ }
+ smsc911x_phy_print_linkmode(locallink,
+ linkpartner);
+ } else {
+ switch (pdata->link_speed) {
+ case LINK_SPEED_10HD:
+ case LINK_SPEED_100HD:
+ smsc911x_mac_write(pdata, FLOW, 0);
+ smsc911x_reg_write(0x0000000F,
+ pdata, AFC_CFG);
+ break;
+ default:
+ smsc911x_mac_write(pdata, FLOW, 0);
+ temp =
+ smsc911x_reg_read(pdata, AFC_CFG);
+ temp &= ~0xF;
+ smsc911x_reg_write(temp, pdata,
+ AFC_CFG);
+ break;
+ }
+ }
+ netif_carrier_on(pdata->dev);
+#ifdef USE_LED1_WORK_AROUND
+ if ((pdata->gpio_orig_setting & GPIO_CFG_LED1_EN_) &&
+ pdata->not_using_extphy) {
+ /* Restore orginal GPIO configuration */
+ pdata->gpio_setting = pdata->gpio_orig_setting;
+ smsc911x_reg_write(pdata->gpio_setting, pdata,
+ GPIO_CFG);
+ }
+#endif /* USE_LED1_WORK_AROUND */
+ } else {
+ SMSC_TRACE("Link is now down");
+ netif_carrier_off(pdata->dev);
+ smsc911x_mac_write(pdata, FLOW, 0);
+
+ temp = smsc911x_reg_read(pdata, AFC_CFG);
+ temp &= ~0xF;
+ smsc911x_reg_write(temp, pdata, AFC_CFG);
+
+#ifdef USE_LED1_WORK_AROUND
+ /* Check global setting that LED1
+ * usage is 10/100 indicator */
+ pdata->gpio_setting =
+ smsc911x_reg_read(pdata, GPIO_CFG);
+ if ((pdata->gpio_setting & GPIO_CFG_LED1_EN_)
+ && pdata->not_using_extphy) {
+ /* Force 10/100 LED off, after saving
+ * orginal GPIO configuration */
+ pdata->gpio_orig_setting = pdata->gpio_setting;
+
+ pdata->gpio_setting &= ~GPIO_CFG_LED1_EN_;
+ pdata->gpio_setting |= (GPIO_CFG_GPIOBUF0_
+ | GPIO_CFG_GPIODIR0_
+ | GPIO_CFG_GPIOD0_);
+ smsc911x_reg_write(pdata->gpio_setting, pdata,
+ GPIO_CFG);
+ }
+#endif /* USE_LED1_WORK_AROUND */
+ }
+ }
+ spin_unlock(&pdata->phy_lock);
+ return;
+}
+
+/* Gets a phy register */
+static unsigned int
+smsc911x_phy_read(struct smsc911x_data *pdata, unsigned int index)
+{
+ unsigned int addr = 0;
+ unsigned int result = 0xFFFF;
+ int i;
+
+ /* Confirm MII not busy */
+ if (unlikely
+ ((smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_) != 0)) {
+ SMSC_WARNING("MII is busy in smsc911x_phy_read???");
+ result = 0;
+ goto done;
+ }
+
+ /* Set the address, index & direction (read from PHY) */
+ addr = (((pdata->phy_address) & 0x1F) << 11)
+ | ((index & 0x1F) << 6);
+ smsc911x_mac_write(pdata, MII_ACC, addr);
+
+ /* Wait for read to complete w/ timeout */
+ for (i = 0; i < 100; i++) {
+ /* See if MII is finished yet */
+ if ((smsc911x_mac_read(pdata, MII_ACC)
+ & MII_ACC_MII_BUSY_) == 0) {
+ result = (unsigned int)smsc911x_mac_read(pdata,
+ MII_DATA);
+ goto done;
+ }
+ }
+ SMSC_WARNING("Timed out waiting for MII write to finish");
+
+ done:
+ return result;
+}
+
+/* Sets a phy register */
+static void smsc911x_phy_write(struct smsc911x_data *pdata,
+ unsigned int index, unsigned int val)
+{
+ unsigned int addr = 0;
+ int i = 0;
+
+ /* Confirm MII not busy */
+ if (unlikely
+ ((smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_) != 0)) {
+ SMSC_WARNING("MII is busy in smsc911x_write_phy???");
+ goto done;
+ }
+
+ /* Put the data to write in the MAC */
+ smsc911x_mac_write(pdata, MII_DATA, val);
+
+ /* Set the address, index & direction (write to PHY) */
+ addr = (((pdata->phy_address) & 0x1F) << 11) |
+ ((index & 0x1F) << 6) | MII_ACC_MII_WRITE_;
+ smsc911x_mac_write(pdata, MII_ACC, addr);
+
+ /* Wait for write to complete w/ timeout */
+ for (i = 0; i < 100; i++) {
+ /* See if MII is finished yet */
+ if ((smsc911x_mac_read(pdata, MII_ACC)
+ & MII_ACC_MII_BUSY_) == 0)
+ goto done;
+ }
+ SMSC_WARNING("Timed out waiting for MII write to finish");
+ done:
+ return;
+}
+
+/* Entry point for the link poller */
+static void smsc911x_phy_checklink(unsigned long ptr)
+{
+ struct smsc911x_data *pdata;
+ pdata = (struct smsc911x_data *)ptr;
+
+ /* Must call this twice */
+ smsc911x_phy_update_linkmode(pdata);
+ smsc911x_phy_update_linkmode(pdata);
+
+ if (!(pdata->stop_link_poll)) {
+ pdata->link_poll_timer.expires = jiffies + HZ;
+ add_timer(&(pdata->link_poll_timer));
+ }
+ return;
+}
+
+/* Polls for not busy for a limited time */
+static int smsc911x_mac_notbusy(struct smsc911x_data *pdata)
+{
+ int i = 0;
+ /* Assuming MacPhyAccessLock has already been acquired */
+
+ /* wait for MAC not busy, w/ timeout */
+ for (i = 0; i < 40; i++) {
+ if ((smsc911x_reg_read(pdata, MAC_CSR_CMD)
+ & MAC_CSR_CMD_CSR_BUSY_) == 0) {
+ return 1;
+ }
+ }
+ SMSC_WARNING("Timed out waiting for MAC not BUSY. "
+ "MAC_CSR_CMD: 0x%08X", smsc911x_reg_read(pdata,
+ MAC_CSR_CMD));
+ return 0;
+}
+
+/* Fetches a MAC register value. Assumes phy_lock is acquired */
+static unsigned int
+smsc911x_mac_read(struct smsc911x_data *pdata, unsigned int offset)
+{
+ unsigned int result = 0xFFFFFFFF;
+ volatile unsigned int temp = 0;
+
+ /* Wait until not busy */
+ if (unlikely
+ (smsc911x_reg_read(pdata, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY_)) {
+ SMSC_WARNING("smsc911x_mac_read failed, "
+ "MAC already busy at entry");
+ goto done;
+ }
+
+ /* Send the MAC cmd */
+ smsc911x_reg_write(((offset & 0x000000FF) | MAC_CSR_CMD_CSR_BUSY_
+ | MAC_CSR_CMD_R_NOT_W_), pdata, MAC_CSR_CMD);
+
+ temp = smsc911x_reg_read(pdata, BYTE_TEST); /* To flush previous write */
+
+ /* Wait for the read to happen */
+ if (unlikely(!smsc911x_mac_notbusy(pdata))) {
+ SMSC_WARNING("smsc911x_mac_read failed, "
+ "waiting for MAC not busy after read");
+ goto done;
+ } else {
+ /* Read the data */
+ result = smsc911x_reg_read(pdata, MAC_CSR_DATA);
+ }
+ done:
+ return result;
+}
+
+/* Set a mac register, phy_lock must be acquired before calling. */
+static void smsc911x_mac_write(struct smsc911x_data *pdata,
+ unsigned int offset, unsigned int val)
+{
+ volatile unsigned int temp = 0;
+
+ if (unlikely
+ (smsc911x_reg_read(pdata, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY_)) {
+ SMSC_WARNING("smsc911x_mac_write failed, "
+ "MAC already busy at entry");
+ goto done;
+ }
+
+ /* Send data to write */
+ smsc911x_reg_write(val, pdata, MAC_CSR_DATA);
+
+ /* Write the actual data */
+ smsc911x_reg_write(((offset & 0x000000FF) | MAC_CSR_CMD_CSR_BUSY_),
+ pdata, MAC_CSR_CMD);
+ /* Force flush of previous write */
+ temp = smsc911x_reg_read(pdata, BYTE_TEST);
+
+ /* Wait for the write to complete */
+ if (unlikely(!smsc911x_mac_notbusy(pdata))) {
+ SMSC_WARNING("smsc911x_mac_write failed, "
+ "waiting for MAC not busy after write");
+ }
+
+ done:
+ return;
+}
+
+/* Initialise the transmitter, it is called during driver
+ * initialisation, thus no need to acquire phy_lock */
+static void smsc911x_tx_initialise(struct smsc911x_data *pdata)
+{
+ unsigned int mac_cr;
+ unsigned int hw_cfg = 0;
+
+ hw_cfg = smsc911x_reg_read(pdata, HW_CFG);
+ hw_cfg &= HW_CFG_TX_FIF_SZ_;
+ hw_cfg |= HW_CFG_SF_;
+ smsc911x_reg_write(hw_cfg, pdata, HW_CFG);
+
+ smsc911x_reg_write(smsc911x_reg_read(pdata, FIFO_INT) | 0xFF000000,
+ pdata, FIFO_INT);
+ smsc911x_reg_write(smsc911x_reg_read(pdata, INT_EN) | INT_EN_TDFA_EN_,
+ pdata, INT_EN);
+
+ mac_cr = smsc911x_mac_read(pdata, MAC_CR);
+ mac_cr |= (MAC_CR_TXEN_ | MAC_CR_HBDIS_);
+ smsc911x_mac_write(pdata, MAC_CR, mac_cr);
+ smsc911x_reg_write(TX_CFG_TX_ON_, pdata, TX_CFG);
+ return;
+}
+
+/* Reenables the transmitter */
+static inline int
+smsc911x_tx_handleirq(struct smsc911x_data *pdata, unsigned int intsts)
+{
+ if (intsts & INT_STS_TDFA_) {
+ smsc911x_reg_write(smsc911x_reg_read(pdata, FIFO_INT) |
+ 0xFF000000, pdata, FIFO_INT);
+ smsc911x_reg_write(INT_STS_TDFA_, pdata, INT_STS);
+ netif_wake_queue(pdata->dev);
+ return 1;
+ }
+ return 0;
+}
+
+/* Writes a packet to the TX_DATA_FIFO */
+static void
+smsc911x_tx_writefifo(struct smsc911x_data *pdata, unsigned int *buf,
+ unsigned int wordcount)
+{
+ while (wordcount) {
+ smsc911x_reg_write(*buf++, pdata, TX_DATA_FIFO);
+ wordcount--;
+ }
+}
+
+/* Gets the number of tx statuses in the fifo */
+static inline unsigned int smsc911x_tx_get_txstatcount(struct smsc911x_data
+ *pdata)
+{
+ unsigned int result;
+ result = (smsc911x_reg_read(pdata, TX_FIFO_INF)
+ & TX_FIFO_INF_TSUSED_) >> 16;
+ return result;
+}
+
+/* Fetches a tx status out of the status fifo */
+static unsigned int smsc911x_tx_completetx(struct smsc911x_data *pdata)
+{
+ unsigned int result;
+
+ result = smsc911x_reg_read(pdata, TX_FIFO_INF) & TX_FIFO_INF_TSUSED_;
+
+ if (result != 0)
+ result = smsc911x_reg_read(pdata, TX_STATUS_FIFO);
+
+ return result;
+}
+
+/* Reads tx statuses and increments counters where necessary */
+static void smsc911x_tx_update_txcounters(struct smsc911x_data *pdata)
+{
+ unsigned int tx_stat;
+
+ while ((tx_stat = smsc911x_tx_completetx(pdata)) != 0) {
+ if (unlikely(tx_stat & 0x80000000)) {
+ /* In this driver the packet tag is used as the packet length.
+ * Since a packet length can never reach the size of 0x8000,
+ * this bit is reserved so that if packet tracking tags were
+ * ever used, then those tracking tags would set the reserved bit.
+ * Accordingly, this control path would be used to look up the
+ * packet and perhaps free it. It is worth noting that the
+ * "reserved bit" in the warning above does not reference a
+ * hardware defined reserved bit but rather a driver defined one.
+ */
+ SMSC_WARNING("Packet tag reserved bit is high");
+ } else {
+ if (unlikely(tx_stat & 0x00008000)) {
+ pdata->stats.tx_errors++;
+ } else {
+ pdata->stats.tx_packets++;
+ pdata->stats.tx_bytes += (tx_stat >> 16);
+ }
+ if (unlikely(tx_stat & 0x00000100)) {
+ pdata->stats.collisions += 16;
+ pdata->stats.tx_aborted_errors += 1;
+ } else {
+ pdata->stats.collisions +=
+ ((tx_stat >> 3) & 0xF);
+ }
+ if (unlikely(tx_stat & 0x00000800)) {
+ pdata->stats.tx_carrier_errors += 1;
+ }
+ if (unlikely(tx_stat & 0x00000200)) {
+ pdata->stats.collisions++;
+ pdata->stats.tx_aborted_errors++;
+ }
+ }
+ }
+ return;
+}
+
+/* Initializes the receiver, called single-threadedly during
+ * driver initialisation, it doesn't need phy_lock */
+static void smsc911x_rx_initialise(struct smsc911x_data *pdata)
+{
+ unsigned int mac_cr;
+
+ smsc911x_reg_write(0x00000200, pdata, RX_CFG);
+ mac_cr = smsc911x_mac_read(pdata, MAC_CR);
+ mac_cr |= MAC_CR_RXEN_;
+ smsc911x_mac_write(pdata, MAC_CR, mac_cr);
+
+ smsc911x_reg_write(smsc911x_reg_read(pdata, FIFO_INT) & ~(0xFF), pdata,
+ FIFO_INT);
+ smsc911x_reg_write(smsc911x_reg_read(pdata, INT_EN) | INT_EN_RSFL_EN_,
+ pdata, INT_EN);
+ return;
+}
+
+/* Reads a packet out of the RX_DATA_FIFO */
+static void
+smsc911x_rx_readfifo(struct smsc911x_data *pdata, unsigned int *buf,
+ unsigned int count)
+{
+ while (count) {
+ *buf++ = smsc911x_reg_read(pdata, RX_DATA_FIFO);
+ count--;
+ }
+ return;
+}
+
+/* Passes a packet to linux */
+static void smsc911x_rx_handoffskb(struct smsc911x_data *pdata,
+ struct sk_buff *skb)
+{
+ int result;
+
+ skb->dev = pdata->dev;
+ skb->protocol = eth_type_trans(skb, pdata->dev);
+ skb->ip_summed = CHECKSUM_NONE;
+
+ result = netif_rx(skb);
+
+ switch (result) {
+ case NET_RX_SUCCESS:
+ break;
+ case NET_RX_CN_LOW:
+ case NET_RX_CN_MOD:
+ case NET_RX_CN_HIGH:
+ case NET_RX_DROP:
+ pdata->rx_congested = 1;
+ break;
+ default:
+ pdata->rx_congested = 1;
+ SMSC_WARNING("Unknown return value from "
+ "netif_rx, result: %d", result);
+ break;
+ }
+ return;
+}
+
+/* Fetches the next rx status */
+static unsigned int smsc911x_rx_pop_rxstatus(struct smsc911x_data *pdata)
+{
+ unsigned int result;
+
+ result = smsc911x_reg_read(pdata, RX_FIFO_INF);
+ if ((pdata->rx_congested == 0) ||
+ ((pdata->rx_congested == 1) && ((result & 0x00FF0000) == 0))) {
+ /* Rx status is available, read it */
+ if (result & 0x00FF0000)
+ result = smsc911x_reg_read(pdata, RX_STATUS_FIFO);
+ else
+ result = 0;
+ } else {
+ /* Initiate the interrupt deassertion interval */
+ smsc911x_reg_write(smsc911x_reg_read(pdata, INT_CFG)
+ | INT_CFG_INT_DEAS_CLR_, pdata, INT_CFG);
+ result = 0;
+ }
+ return result;
+}
+
+/* Increments the Rx error counters */
+static void
+smsc911x_rx_counterrors(struct smsc911x_data *pdata, unsigned int rxstat)
+{
+ int crc_err;
+
+ crc_err = 0;
+ if (unlikely(rxstat & 0x00008000)) {
+ pdata->stats.rx_errors++;
+ if (unlikely(rxstat & 0x00000002)) {
+ pdata->stats.rx_crc_errors++;
+ crc_err = 1;
+ }
+ }
+ if (likely(!crc_err)) {
+ if (unlikely((rxstat & 0x00001020) == 0x00001020)) {
+ /* Frame type indicates length,
+ * and length error is set */
+ pdata->stats.rx_length_errors++;
+ }
+ if (rxstat & RX_STS_MCAST_)
+ pdata->stats.multicast++;
+ }
+ return;
+}
+
+/* Quickly dumps bad packets */
+static void
+smsc911x_rx_fastforward(struct smsc911x_data *pdata, unsigned int count)
+{
+ if (likely(count >= 4)) {
+ unsigned int timeout = 500;
+ smsc911x_reg_write(RX_DP_CTRL_RX_FFWD_, pdata, RX_DP_CTRL);
+ while (timeout && (smsc911x_reg_read(pdata, RX_DP_CTRL)
+ & RX_DP_CTRL_RX_FFWD_)) {
+ udelay(1);
+ timeout--;
+ }
+ if (unlikely(timeout == 0)) {
+ SMSC_WARNING("Timed out waiting for RX FFWD "
+ "to finish, RX_DP_CTRL: 0x%08X",
+ smsc911x_reg_read(pdata, RX_DP_CTRL));
+ }
+ } else {
+ while (count) {
+ volatile unsigned int temp;
+ temp = smsc911x_reg_read(pdata, RX_DATA_FIFO);
+ count--;
+ }
+ }
+ return;
+}
+
+/* Main function for reading packets out of the LAN911x */
+static void smsc911x_rx_processpackets(struct smsc911x_data *pdata)
+{
+ unsigned int rxstat;
+ unsigned int *bufptr;
+
+ pdata->rx_congested = 0;
+ while ((rxstat = smsc911x_rx_pop_rxstatus(pdata)) != 0) {
+ unsigned int pktlength = ((rxstat & 0x3FFF0000) >> 16);
+ smsc911x_rx_counterrors(pdata, rxstat);
+
+ if (likely((rxstat & RX_STS_ES_) == 0)) {
+ struct sk_buff *skb = NULL;
+ skb = dev_alloc_skb(pktlength + 2);
+ if (likely(skb)) {
+ skb->data = skb->head;
+ skb->tail = skb->head;
+ /* Align IP on 16B boundary */
+ skb_reserve(skb, 2);
+ skb_put(skb, pktlength - 4);
+
+ /* Update counters */
+ pdata->stats.rx_packets++;
+ pdata->stats.rx_bytes += (pktlength - 4);
+ bufptr = (unsigned int *)skb->head;
+ smsc911x_rx_readfifo(pdata, bufptr,
+ (pktlength + 2 + 3) >> 2);
+
+ smsc911x_rx_handoffskb(pdata, skb);
+ continue;
+ } else {
+ SMSC_WARNING("Unable to allocate sk_buff "
+ "for rx packet, in PIO path");
+ pdata->stats.rx_dropped++;
+ }
+ }
+ /* At this point, the packet is to be read out
+ * of the fifo and discarded */
+ pktlength += 2 + 3;
+ pktlength >>= 2;
+ smsc911x_rx_fastforward(pdata, pktlength);
+ }
+ pdata->stats.rx_dropped += smsc911x_reg_read(pdata, RX_DROP);
+ smsc911x_reg_write(INT_STS_RSFL_, pdata, INT_STS);
+ return;
+}
+
+/* Receive tasklet */
+static void smsc911x_rx_tasklet(unsigned long data)
+{
+ struct net_device *netdev;
+ struct smsc911x_data *pdata;
+
+ netdev = (struct net_device *)rx_tasklet_parameter;
+ pdata = netdev_priv(netdev);
+
+ smsc911x_rx_processpackets(pdata);
+ smsc911x_reg_write(smsc911x_reg_read(pdata, INT_CFG) | INT_CFG_IRQ_EN_,
+ pdata, INT_CFG);
+ return;
+}
+
+/* Receiver irq handler */
+static int smsc911x_rx_handleirq(struct smsc911x_data *pdata,
+ unsigned int intsts)
+{
+ int result = 0;
+
+ if (unlikely(intsts & INT_STS_RXE_)) {
+ smsc911x_reg_write(INT_STS_RXE_, pdata, INT_STS);
+ result = 1;
+ }
+ if (!(intsts & INT_STS_RSFL_)) {
+ return result;
+ }
+
+ result = 1;
+ smsc911x_reg_write(smsc911x_reg_read(pdata, INT_CFG) &
+ (~INT_CFG_IRQ_EN_), pdata, INT_CFG);
+ tasklet_schedule(&rx_tasklet);
+ return result;
+}
+
+/* Returns hash bit number for given MAC address
+ * Example:
+ * 01 00 5E 00 00 01 -> returns bit number 31 */
+static unsigned int smsc911x_hash(char addr[6])
+{
+ int i;
+ int bit;
+ unsigned int crc;
+ unsigned int poly;
+ unsigned int result;
+ unsigned int data;
+
+ crc = 0xFFFFFFFF;
+ poly = 0xEDB88320;
+ result = 0;
+
+ for (i = 0; i < 6; i++) {
+ data = (unsigned int)addr[i];
+ for (bit = 0; bit < 8; bit++) {
+ unsigned int p = (crc ^ ((unsigned int)data)) & 1;
+ crc >>= 1;
+ if (p != 0)
+ crc ^= poly;
+ data >>= 1;
+ }
+ }
+ result = ((crc & 0x01) << 5) | ((crc & 0x02) << 3) |
+ ((crc & 0x04) << 1) | ((crc & 0x08) >> 1) |
+ ((crc & 0x10) >> 3) | ((crc & 0x20) >> 5);
+ return result;
+}
+
+static void smsc911x_rx_multicast_update(struct smsc911x_data *pdata)
+{
+ unsigned long flags;
+ unsigned int timeout;
+ unsigned int mac_cr;
+
+ /* This function is only called for older LAN911x devices
+ * (revA or revB), where MAC_CR, HASHH and HASHL should not
+ * be modified during Rx - newer devices immediately update the
+ * registers */
+
+ local_irq_save(flags);
+
+ /* Stop Rx */
+ mac_cr = smsc911x_mac_read(pdata, MAC_CR);
+ mac_cr &= ~(MAC_CR_RXEN_);
+ smsc911x_mac_write(pdata, MAC_CR, mac_cr);
+
+ /* Poll until Rx has stopped. If a frame is being recieved, this will
+ * block until the end of this frame. (this may take a long time at
+ * 10Mbps) */
+ timeout = 2000;
+ while ((timeout--)
+ && (!(smsc911x_reg_read(pdata, INT_STS) & INT_STS_RXSTOP_INT_))) {
+ udelay(1);
+ }
+
+ if (unlikely(timeout == 0)) {
+ /* We have delayed for 2000us, so Rx should have stopped. At
+ * 10Mbps-HD, Rx stop is only 99.6% reliable. */
+ SMSC_WARNING("Rx stop timed out\n");
+ }
+
+ /* Acknowledge the interrupt */
+ smsc911x_reg_write(INT_STS_RXSTOP_INT_, pdata, INT_STS);
+
+ /* Perform the update - safe to do now Rx has stopped */
+ mac_cr = smsc911x_mac_read(pdata, MAC_CR);
+ mac_cr |= pdata->set_bits_mask;
+ mac_cr &= ~(pdata->clear_bits_mask);
+ smsc911x_mac_write(pdata, MAC_CR, mac_cr);
+ smsc911x_mac_write(pdata, HASHH, pdata->hashhi);
+ smsc911x_mac_write(pdata, HASHL, pdata->hashlo);
+ SMSC_TRACE("maccr 0x%08X, HASHH 0x%08X, HASHL 0x%08X", mac_cr,
+ pdata->HashHi, pdata->HashLo);
+
+ /* Re-enable Rx */
+ mac_cr = smsc911x_mac_read(pdata, MAC_CR);
+ mac_cr |= MAC_CR_RXEN_;
+ smsc911x_mac_write(pdata, MAC_CR, mac_cr);
+
+ pdata->multicast_update_pending = 0;
+
+ local_irq_restore(flags);
+}
+
+static int
+smsc911x_lan_initialise(struct smsc911x_data *pdata, unsigned int intcfg)
+{
+ int result;
+ unsigned int timeout;
+ unsigned int temp;
+
+ result = 0;
+ timeout = 0;
+ temp = 0;
+ SMSC_TRACE("LAN Initialise, int_cfg: 0x%08X", intcfg);
+ BUG_ON(!pdata);
+ spin_lock_init(&pdata->phy_lock);
+
+ /* Reset the LAN911x */
+ smsc911x_reg_write(HW_CFG_SRST_, pdata, HW_CFG);
+ timeout = 10;
+
+ do {
+ udelay(10);
+ temp = smsc911x_reg_read(pdata, HW_CFG);
+ timeout--;
+ } while ((timeout > 0) && (temp & HW_CFG_SRST_));
+
+ if (unlikely(temp & HW_CFG_SRST_)) {
+ SMSC_WARNING("Failed to complete reset");
+ goto done;
+ }
+
+ smsc911x_reg_write(0x00050000, pdata, HW_CFG);
+ smsc911x_reg_write(0x006E3740, pdata, AFC_CFG);
+
+ /* Make sure EEPROM has finished loading before setting GPIO_CFG */
+ timeout = 50;
+ while ((timeout > 0) &&
+ (smsc911x_reg_read(pdata, E2P_CMD) & E2P_CMD_EPC_BUSY_)) {
+ udelay(10);
+ timeout--;
+ }
+
+ if (unlikely(timeout == 0)) {
+ SMSC_WARNING("Timed out waiting for EEPROM "
+ "busy bit to clear\n");
+ }
+#if USE_DEBUG >= 1
+ smsc911x_reg_write(0x00670700, pdata, GPIO_CFG);
+#else
+ smsc911x_reg_write(0x70070000, pdata, GPIO_CFG);
+#endif
+
+ /* Initialise irqs */
+ smsc911x_reg_write(0, pdata, INT_EN);
+ smsc911x_reg_write(0xFFFFFFFF, pdata, INT_STS);
+ intcfg |= INT_CFG_IRQ_EN_;
+ smsc911x_reg_write(intcfg, pdata, INT_CFG);
+ result = 1;
+ done:
+ return result;
+}
+
+/* Initializing private device structures */
+static int smsc911x_init(struct net_device *netdev)
+{
+ int result;
+ unsigned long idrev;
+ unsigned int mac_high16;
+ unsigned int mac_low32;
+ struct smsc911x_data *pdata;
+
+ idrev = 0;
+ pdata = 0;
+ result = -ENODEV;
+
+ BUG_ON(!netdev);
+
+ SMSC_TRACE("Driver Parameters:");
+ SMSC_TRACE("LAN base: 0x%08lX", netdev->base_addr);
+ SMSC_TRACE("IRQ: %d", netdev->irq);
+ SMSC_TRACE("PHY will be autodetected.");
+ BUG_ON(!netdev_priv(netdev));
+
+ memset(netdev_priv(netdev), 0, sizeof(struct smsc911x_data));
+ pdata = netdev_priv(netdev);
+
+ if (netdev->base_addr == 0) {
+ SMSC_WARNING("netdev->base_addr: 0x00000000");
+ result = -ENODEV;
+ goto done;
+ }
+ /* Initialise internal base field */
+ pdata->base = netdev->base_addr;
+
+ /* Read mac address assigned as from EEPROM */
+ mac_high16 = smsc911x_mac_read(pdata, ADDRH);
+ mac_low32 = smsc911x_mac_read(pdata, ADDRL);
+
+ if ((mac_high16 == 0x0000FFFF)
+ && (mac_low32 == 0xFFFFFFFF)) {
+
+ /* Use default MAC addresses if eeprom values are invalid */
+ mac_high16 = 0x00000070;
+ mac_low32 = 0x110F8000;
+ smsc911x_mac_write(pdata, ADDRH, mac_high16);
+ smsc911x_mac_write(pdata, ADDRL, mac_low32);
+ SMSC_TRACE("MAC Address is set by default to 0x%04X%08X",
+ mac_high16, mac_low32);
+ } else {
+ SMSC_TRACE("MAC Address is read from LAN911x as 0x%04X%08X",
+ mac_high16, mac_low32);
+ }
+
+ /* Default generation to zero (all workarounds apply) */
+ pdata->generation = 0;
+
+ idrev = smsc911x_reg_read(pdata, ID_REV);
+ if (((idrev >> 16) & 0xFFFF) == (idrev & 0xFFFF)) {
+ /* this may mean the chip is set for 32 bit
+ * while the bus is reading as 16 bit
+ */
+ unknown_chip:
+ SMSC_WARNING("LAN911x not identified, idrev: 0x%08lX", idrev);
+ result = -ENODEV;
+ goto done;
+ }
+ switch (idrev & 0xFFFF0000) {
+ case 0x01180000:
+ switch (idrev & 0x0000FFFFUL) {
+ case 0UL:
+ SMSC_TRACE("LAN9118 Beacon identified, idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 0;
+ break;
+ case 1UL:
+ SMSC_TRACE
+ ("LAN9118 Concord A0 identified, idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 1;
+ break;
+ case 2UL:
+ SMSC_TRACE
+ ("LAN9118 Concord A1 identified, idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 2;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9118 Concord A1 identified (NEW), idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 2;
+ break;
+ }
+ break;
+
+ case 0x01170000:
+ switch (idrev & 0x0000FFFFUL) {
+ case 0UL:
+ SMSC_TRACE("LAN9117 Beacon identified, idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 0;
+ break;
+ case 1UL:
+ SMSC_TRACE
+ ("LAN9117 Concord A0 identified, idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 1;
+ break;
+ case 2UL:
+ SMSC_TRACE
+ ("LAN9117 Concord A1 identified, idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 2;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9117 Concord A1 identified (NEW), idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 2;
+ break;
+ }
+ break;
+
+ case 0x01160000:
+ switch (idrev & 0x0000FFFFUL) {
+ case 0UL:
+ goto unknown_chip;
+ case 1UL:
+ SMSC_TRACE
+ ("LAN9116 Concord A0 identified, idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 1;
+ break;
+ case 2UL:
+ SMSC_TRACE
+ ("LAN9116 Concord A1 identified, idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 2;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9116 Concord A1 identified (NEW), idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 2;
+ break;
+ }
+ break;
+
+ case 0x01150000:
+ switch (idrev & 0x0000FFFFUL) {
+ case 0UL:
+ goto unknown_chip;
+ case 1UL:
+ SMSC_TRACE
+ ("LAN9115 Concord A0 identified, idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 1;
+ break;
+ case 2UL:
+ SMSC_TRACE
+ ("LAN9115 Concord A1 identified, idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 2;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9115 Concord A1 identified (NEW), idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 2;
+ break;
+ }
+ break;
+
+ case 0x01120000:
+ switch (idrev & 0x0000FFFFUL) {
+ case 0UL:
+ goto unknown_chip;
+ case 1UL:
+ SMSC_TRACE
+ ("LAN9112 Concord A0 identified, idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 1;
+ break;
+ case 2UL:
+ SMSC_TRACE
+ ("LAN9112 Concord A1 identified, idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 2;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9112 Concord A1 identified (NEW), idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 2;
+ break;
+ }
+ break;
+
+ case 0x118A0000UL:
+ switch (idrev & 0x0000FFFFUL) {
+ case 0UL:
+ SMSC_TRACE
+ ("LAN9218 Boylston identified, idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 3;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9218 Boylston identified (NEW), idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 3;
+ break;
+ }
+ break;
+
+ case 0x117A0000UL:
+ switch (idrev & 0x0000FFFFUL) {
+ case 0UL:
+ SMSC_TRACE
+ ("LAN9217 Boylston identified, idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 3;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9217 Boylston identified (NEW), idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 3;
+ break;
+ }
+ break;
+
+ case 0x116A0000UL:
+ switch (idrev & 0x0000FFFFUL) {
+ case 0UL:
+ SMSC_TRACE
+ ("LAN9216 Boylston identified, idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 3;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9216 Boylston identified (NEW), idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 3;
+ break;
+ }
+ break;
+
+ case 0x115A0000UL:
+ switch (idrev & 0x0000FFFFUL) {
+ case 0UL:
+ SMSC_TRACE
+ ("LAN9215 Boylston identified, idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 3;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9215 Boylston identified (NEW), idrev: 0x%08lX",
+ idrev);
+ pdata->generation = 3;
+ break;
+ }
+ break;
+
+ default:
+ goto unknown_chip;
+ }
+ pdata->idrev = idrev;
+
+ if (pdata->generation == 0)
+ SMSC_WARNING("This driver is not intended "
+ "for this chip revision");
+
+ ether_setup(netdev);
+ netdev->open = smsc911x_open;
+ netdev->stop = smsc911x_stop;
+ netdev->hard_start_xmit = smsc911x_hard_start_xmit;
+ netdev->get_stats = smsc911x_get_stats;
+ netdev->set_multicast_list = smsc911x_set_multicast_list;
+ netdev->flags |= IFF_MULTICAST;
+ pdata->dev = netdev;
+
+ result = 0;
+
+ done:
+ return result;
+}
+
+static int smsc911x_drv_remove(struct platform_device *pdev)
+{
+ struct net_device *netdev;
+ struct smsc911x_data *pdata;
+ struct resource *res;
+ unsigned int base;
+
+ netdev = platform_get_drvdata(pdev);
+ BUG_ON(!netdev);
+ pdata = netdev_priv(netdev);
+ BUG_ON(!pdata);
+ base = pdata->base;
+ BUG_ON(!base);
+
+ SMSC_TRACE("Stopping driver.");
+ platform_set_drvdata(pdev, NULL);
+ unregister_netdev(netdev);
+ free_irq(netdev->irq, netdev);
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+ "smsc911x-memory");
+ if (!res)
+ platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+ release_mem_region(res->start, res->end - res->start);
+ /* Clear global ptr to netdev for tasklets */
+ rx_tasklet_parameter = 0;
+ free_netdev(netdev);
+ iounmap((void *)base);
+ return 0;
+}
+
+static int smsc911x_drv_probe(struct platform_device *pdev)
+{
+ struct net_device *netdev;
+ struct resource *res;
+ unsigned int base;
+ int res_size;
+ int retval;
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+ "smsc911x-memory");
+ if (!res)
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ retval = -ENODEV;
+ goto out;
+ }
+ res_size = res->end - res->start;
+
+ if (!request_mem_region(res->start, res_size, SMSC_CHIPNAME)) {
+ retval = -EBUSY;
+ goto out;
+ }
+
+ netdev = alloc_etherdev(sizeof(struct smsc911x_data));
+ if (!netdev) {
+ printk("%s: Could not allocate device.\n", SMSC_CHIPNAME);
+ retval = -ENOMEM;
+ goto out_release_io;
+ }
+ SET_MODULE_OWNER(netdev);
+ SET_NETDEV_DEV(netdev, &pdev->dev);
+
+ /* Global pointer to netdev, used by tasklets */
+ rx_tasklet_parameter = (unsigned long)netdev;
+ netdev->irq = platform_get_irq(pdev, 0);
+ netdev->base_addr = (unsigned int)ioremap_nocache(res->start, res_size);
+ base = netdev->base_addr;
+ if (netdev->base_addr == 0) {
+ SMSC_WARNING("Error smsc911x base address invalid");
+ retval = -ENOMEM;
+ goto out_free_netdev;
+ }
+
+ if ((retval = smsc911x_init(netdev)) < 0)
+ goto out_unmap_io;
+
+ if (request_irq(netdev->irq, smsc911x_irqhandler,
+ SA_INTERRUPT, SMSC_CHIPNAME,
+ netdev_priv(netdev)) != 0) {
+ SMSC_WARNING("Unable to claim requested irq: %d", netdev->irq);
+ retval = -ENODEV;
+ goto out_unmap_io;
+ }
+
+ platform_set_drvdata(pdev, netdev);
+ retval = register_netdev(netdev);
+
+ if (retval) {
+ SMSC_WARNING("Error %i registering device", retval);
+ retval = -ENODEV;
+ goto out_unset_drvdata;
+ } else {
+ SMSC_TRACE("Network interface: \"%s\"", netdev->name);
+ }
+
+ return 0;
+
+out_unset_drvdata:
+ platform_set_drvdata(pdev, NULL);
+out_unmap_io:
+ iounmap((void *)base);
+out_free_netdev:
+ rx_tasklet_parameter = 0;
+ free_netdev(netdev);
+out_release_io:
+ release_mem_region(res->start, res->end - res->start);
+out:
+ return retval;
+}
+
+static struct platform_driver smsc911x_driver = {
+ .probe = smsc911x_drv_probe,
+ .remove = smsc911x_drv_remove,
+ .suspend = 0, /* TODO: Add suspend routine */
+ .resume = 0, /* TODO: Add resume routeine */
+ .driver = {
+ .name = SMSC_CHIPNAME,
+ },
+};
+
+/* Entry point for loading the module ==> All below must go
+ * into drv_probe */
+static int __init smsc911x_init_module(void)
+{
+ platform_driver_register(&smsc911x_driver);
+ return 0;
+}
+
+/* entry point for unloading the module */
+static void __exit smsc911x_cleanup_module(void)
+{
+ platform_driver_unregister(&smsc911x_driver);
+}
+
+module_init(smsc911x_init_module);
+module_exit(smsc911x_cleanup_module);
diff --git a/drivers/net/smsc911x.h b/drivers/net/smsc911x.h
new file mode 100644
index 0000000..175f6cb
--- /dev/null
+++ b/drivers/net/smsc911x.h
@@ -0,0 +1,504 @@
+#ifndef __SMSC911X_H__
+#define __SMSC911X_H__
+
+#define USE_PHY_WORK_AROUND
+#define USE_LED1_WORK_AROUND /* 10/100 LED link-state inversion */
+
+/* Debugging */
+#define USE_DEBUG 0
+#if USE_DEBUG >= 1
+#define SMSC_WARNING(fmt, args...) \
+ printk(KERN_EMERG "SMSC_WARNING: %s: " fmt "\n", \
+ __FUNCTION__ , ## args)
+#else
+#define SMSC_WARNING(msg, args...)
+#endif /* USE_DEBUG >= 1 */
+
+#if USE_DEBUG >= 2
+#define SMSC_TRACE(fmt,args...) \
+ printk(KERN_EMERG "SMSC_TRACE: %s: " fmt "\n", \
+ __FUNCTION__ , ## args)
+#else
+#define SMSC_TRACE(msg,args...)
+#endif /* USE_DEBUG >= 2 */
+
+/* NOTE: If you add any more fields, make sure to decide on whether
+ * to clear the fields or retain their values in smsc911x_stop() */
+struct smsc911x_data {
+ unsigned int base;
+ unsigned int idrev;
+
+ /* used to decide which workarounds apply */
+ unsigned int generation;
+
+ struct net_device *dev;
+
+ /* This needs to be acquired before calling any of below:
+ * smsc911x_mac_read(), smsc911x_mac_write()
+ * smsc911x_phy_read(), smsc911x_phy_write()
+ */
+ spinlock_t phy_lock;
+
+ int rx_congested;
+ struct net_device_stats stats;
+
+ unsigned int phy_address;
+#ifdef USE_LED1_WORK_AROUND
+ unsigned int gpio_setting;
+ unsigned int gpio_orig_setting;
+ unsigned int not_using_extphy;
+#endif
+ unsigned int link_speed;
+ unsigned int link_settings;
+ struct timer_list link_poll_timer;
+ int stop_link_poll;
+
+ int request_irq_disable;
+ int software_irq_signal;
+
+#ifdef USE_PHY_WORK_AROUND
+#define MIN_PACKET_SIZE (64)
+ char loopback_tx_pkt[MIN_PACKET_SIZE];
+ char loopback_rx_pkt[MIN_PACKET_SIZE];
+ unsigned int resetcount;
+#endif
+
+ /* Members for Multicast filter workaround */
+ unsigned int multicast_update_pending;
+ unsigned int set_bits_mask;
+ unsigned int clear_bits_mask;
+ unsigned int hashhi;
+ unsigned int hashlo;
+};
+
+#define TX_FIFO_LOW_THRESHOLD (1600)
+
+/* IO macros for portability */
+
+#define SMSC_CAN_USE_16BIT 0
+#define SMSC_CAN_USE_32BIT 1
+
+#if SMSC_CAN_USE_16BIT
+
+static inline u32 smsc911x_reg_read(struct smsc911x_data *pdata, u32 reg)
+{
+ u32 reg_val;
+ unsigned long flags;
+
+ /* these two 16-bit reads must be performed consecutively, so must
+ * not be interrupted by our own ISR (which would start another
+ * read operation) */
+ local_irq_save(flags);
+ reg_val = ((readw((u16 *)(pdata->base + reg)) & 0xFFFF) |
+ ((readw((u16 *)(pdata->base + reg + 2)) & 0xFFFF) << 16));
+ local_irq_restore(flags);
+
+ return reg_val;
+}
+
+static inline void smsc911x_reg_write(u32 val, struct smsc911x_data *pdata,
+ u32 reg)
+{
+ unsigned long flags;
+
+ /* these two 16-bit writes must be performed consecutively, so must
+ * not be interrupted by our own ISR (which would start another
+ * read operation) */
+ local_irq_save(flags);
+ writew(val & 0xFFFF, (u16 *)(pdata->base + reg));
+ writew(((val >> 16) & 0xFFFF), (u16 *)(pdata->base + reg + 2));
+ local_irq_restore(flags);
+}
+
+#elif SMSC_CAN_USE_32BIT
+
+static inline u32 smsc911x_reg_read(struct smsc911x_data *pdata, u32 reg)
+{
+ return readl((u32 *)(pdata->base + reg));
+}
+
+static inline void smsc911x_reg_write(u32 val, struct smsc911x_data *pdata,
+ u32 reg)
+{
+ writel(val, (u32 *)(pdata->base + reg));
+}
+
+#endif /* SMSC_CAN_USE_32BIT */
+
+/* SMSC911x registers and bitfields */
+#define RX_DATA_FIFO 0x00
+
+#define TX_DATA_FIFO 0x20
+#define TX_CMD_A_ON_COMP_ 0x80000000
+#define TX_CMD_A_BUF_END_ALGN_ 0x03000000
+#define TX_CMD_A_4_BYTE_ALGN_ 0x00000000
+#define TX_CMD_A_16_BYTE_ALGN_ 0x01000000
+#define TX_CMD_A_32_BYTE_ALGN_ 0x02000000
+#define TX_CMD_A_DATA_OFFSET_ 0x001F0000
+#define TX_CMD_A_FIRST_SEG_ 0x00002000
+#define TX_CMD_A_LAST_SEG_ 0x00001000
+#define TX_CMD_A_BUF_SIZE_ 0x000007FF
+#define TX_CMD_B_PKT_TAG_ 0xFFFF0000
+#define TX_CMD_B_ADD_CRC_DISABLE_ 0x00002000
+#define TX_CMD_B_DISABLE_PADDING_ 0x00001000
+#define TX_CMD_B_PKT_BYTE_LENGTH_ 0x000007FF
+
+#define RX_STATUS_FIFO 0x40
+#define RX_STS_ES_ 0x00008000
+#define RX_STS_MCAST_ 0x00000400
+#define RX_STATUS_FIFO_PEEK 0x44
+#define TX_STATUS_FIFO 0x48
+#define TX_STATUS_FIFO_PEEK 0x4C
+#define ID_REV 0x50
+#define ID_REV_CHIP_ID_ 0xFFFF0000 /* RO */
+#define ID_REV_REV_ID_ 0x0000FFFF /* RO */
+
+#define INT_CFG 0x54
+#define INT_CFG_INT_DEAS_ 0xFF000000 /* R/W */
+#define INT_CFG_INT_DEAS_CLR_ 0x00004000 /* SC */
+#define INT_CFG_INT_DEAS_STS_ 0x00002000 /* SC */
+#define INT_CFG_IRQ_INT_ 0x00001000 /* RO */
+#define INT_CFG_IRQ_EN_ 0x00000100 /* R/W */
+#define INT_CFG_IRQ_POL_ 0x00000010 /* R/W Not Affected by SW Reset */
+#define INT_CFG_IRQ_TYPE_ 0x00000001 /* R/W Not Affected by SW Reset */
+
+#define INT_STS 0x58
+#define INT_STS_SW_INT_ 0x80000000 /* R/WC */
+#define INT_STS_TXSTOP_INT_ 0x02000000 /* R/WC */
+#define INT_STS_RXSTOP_INT_ 0x01000000 /* R/WC */
+#define INT_STS_RXDFH_INT_ 0x00800000 /* R/WC */
+#define INT_STS_RXDF_INT_ 0x00400000 /* R/WC */
+#define INT_STS_TX_IOC_ 0x00200000 /* R/WC */
+#define INT_STS_RXD_INT_ 0x00100000 /* R/WC */
+#define INT_STS_GPT_INT_ 0x00080000 /* R/WC */
+#define INT_STS_PHY_INT_ 0x00040000 /* RO */
+#define INT_STS_PME_INT_ 0x00020000 /* R/WC */
+#define INT_STS_TXSO_ 0x00010000 /* R/WC */
+#define INT_STS_RWT_ 0x00008000 /* R/WC */
+#define INT_STS_RXE_ 0x00004000 /* R/WC */
+#define INT_STS_TXE_ 0x00002000 /* R/WC */
+#define INT_STS_TDFU_ 0x00000800 /* R/WC */
+#define INT_STS_TDFO_ 0x00000400 /* R/WC */
+#define INT_STS_TDFA_ 0x00000200 /* R/WC */
+#define INT_STS_TSFF_ 0x00000100 /* R/WC */
+#define INT_STS_TSFL_ 0x00000080 /* R/WC */
+#define INT_STS_RXDF_ 0x00000040 /* R/WC */
+#define INT_STS_RDFL_ 0x00000020 /* R/WC */
+#define INT_STS_RSFF_ 0x00000010 /* R/WC */
+#define INT_STS_RSFL_ 0x00000008 /* R/WC */
+#define INT_STS_GPIO2_INT_ 0x00000004 /* R/WC */
+#define INT_STS_GPIO1_INT_ 0x00000002 /* R/WC */
+#define INT_STS_GPIO0_INT_ 0x00000001 /* R/WC */
+#define INT_EN 0x5C
+#define INT_EN_SW_INT_EN_ 0x80000000 /* R/W */
+#define INT_EN_TXSTOP_INT_EN_ 0x02000000 /* R/W */
+#define INT_EN_RXSTOP_INT_EN_ 0x01000000 /* R/W */
+#define INT_EN_RXDFH_INT_EN_ 0x00800000 /* R/W */
+#define INT_EN_TIOC_INT_EN_ 0x00200000 /* R/W */
+#define INT_EN_RXD_INT_EN_ 0x00100000 /* R/W */
+#define INT_EN_GPT_INT_EN_ 0x00080000 /* R/W */
+#define INT_EN_PHY_INT_EN_ 0x00040000 /* R/W */
+#define INT_EN_PME_INT_EN_ 0x00020000 /* R/W */
+#define INT_EN_TXSO_EN_ 0x00010000 /* R/W */
+#define INT_EN_RWT_EN_ 0x00008000 /* R/W */
+#define INT_EN_RXE_EN_ 0x00004000 /* R/W */
+#define INT_EN_TXE_EN_ 0x00002000 /* R/W */
+#define INT_EN_TDFU_EN_ 0x00000800 /* R/W */
+#define INT_EN_TDFO_EN_ 0x00000400 /* R/W */
+#define INT_EN_TDFA_EN_ 0x00000200 /* R/W */
+#define INT_EN_TSFF_EN_ 0x00000100 /* R/W */
+#define INT_EN_TSFL_EN_ 0x00000080 /* R/W */
+#define INT_EN_RXDF_EN_ 0x00000040 /* R/W */
+#define INT_EN_RDFL_EN_ 0x00000020 /* R/W */
+#define INT_EN_RSFF_EN_ 0x00000010 /* R/W */
+#define INT_EN_RSFL_EN_ 0x00000008 /* R/W */
+#define INT_EN_GPIO2_INT_ 0x00000004 /* R/W */
+#define INT_EN_GPIO1_INT_ 0x00000002 /* R/W */
+#define INT_EN_GPIO0_INT_ 0x00000001 /* R/W */
+
+#define BYTE_TEST 0x64
+#define FIFO_INT 0x68
+#define FIFO_INT_TX_AVAIL_LEVEL_ 0xFF000000/* R/W */
+#define FIFO_INT_TX_STS_LEVEL_ 0x00FF0000/* R/W */
+#define FIFO_INT_RX_AVAIL_LEVEL_ 0x0000FF00/* R/W */
+#define FIFO_INT_RX_STS_LEVEL_ 0x000000FF/* R/W */
+
+#define RX_CFG 0x6C
+#define RX_CFG_RX_END_ALGN_ 0xC0000000 /* R/W */
+#define RX_CFG_RX_END_ALGN4_ 0x00000000 /* R/W */
+#define RX_CFG_RX_END_ALGN16_ 0x40000000 /* R/W */
+#define RX_CFG_RX_END_ALGN32_ 0x80000000 /* R/W */
+#define RX_CFG_RX_DMA_CNT_ 0x0FFF0000 /* R/W */
+#define RX_CFG_RX_DUMP_ 0x00008000 /* R/W */
+#define RX_CFG_RXDOFF_ 0x00001F00 /* R/W */
+
+#define TX_CFG 0x70
+#define TX_CFG_TXS_DUMP_ 0x00008000 /* Self Clearing */
+#define TX_CFG_TXD_DUMP_ 0x00004000 /* Self Clearing */
+#define TX_CFG_TXSAO_ 0x00000004 /* R/W */
+#define TX_CFG_TX_ON_ 0x00000002 /* R/W */
+#define TX_CFG_STOP_TX_ 0x00000001 /* Self Clearing */
+
+#define HW_CFG 0x74
+#define HW_CFG_TTM_ 0x00200000 /* R/W */
+#define HW_CFG_SF_ 0x00100000 /* R/W */
+#define HW_CFG_TX_FIF_SZ_ 0x000F0000 /* R/W */
+#define HW_CFG_TR_ 0x00003000 /* R/W */
+
+/* R/W only available on 115/117 */
+#define HW_CFG_PHY_CLK_SEL_ 0x00000060
+
+/* R/W only available on 115/117 */
+#define HW_CFG_PHY_CLK_SEL_INT_PHY_ 0x00000000
+
+/* R/W only available on 115/117 */
+#define HW_CFG_PHY_CLK_SEL_EXT_PHY_ 0x00000020
+
+/* R/W only available on 115/117 */
+#define HW_CFG_PHY_CLK_SEL_CLK_DIS_ 0x00000040
+
+/* R/W only available on 115/117 */
+#define HW_CFG_SMI_SEL_ 0x00000010
+
+/* RO only available on 115/117 */
+#define HW_CFG_EXT_PHY_DET_ 0x00000008
+
+/* R/W only available on 115/117 */
+#define HW_CFG_EXT_PHY_EN_ 0x00000004
+
+/* RO only available on 116/118 */
+#define HW_CFG_32_16_BIT_MODE_ 0x00000004
+
+/* RO only available on 115/117 */
+#define HW_CFG_SRST_TO_ 0x00000002
+#define HW_CFG_SRST_ 0x00000001 /* Self Clearing */
+
+#define RX_DP_CTRL 0x78
+#define RX_DP_CTRL_RX_FFWD_ 0x80000000 /* RO */
+
+#define RX_FIFO_INF 0x7C
+#define RX_FIFO_INF_RXSUSED_ 0x00FF0000 /* RO */
+#define RX_FIFO_INF_RXDUSED_ 0x0000FFFF /* RO */
+
+#define TX_FIFO_INF 0x80
+#define TX_FIFO_INF_TSUSED_ 0x00FF0000 /* RO */
+#define TX_FIFO_INF_TDFREE_ 0x0000FFFF /* RO */
+
+#define PMT_CTRL 0x84
+#define PMT_CTRL_PM_MODE_ 0x00003000 /* Self Clearing */
+#define PMT_CTRL_PM_MODE_D0_ 0x00000000 /* Self Clearing */
+#define PMT_CTRL_PM_MODE_D1_ 0x00001000 /* Self Clearing */
+#define PMT_CTRL_PM_MODE_D2_ 0x00002000 /* Self Clearing */
+#define PMT_CTRL_PM_MODE_D3_ 0x00003000 /* Self Clearing */
+#define PMT_CTRL_PHY_RST_ 0x00000400 /* Self Clearing */
+#define PMT_CTRL_WOL_EN_ 0x00000200 /* R/W */
+#define PMT_CTRL_ED_EN_ 0x00000100 /* R/W */
+#define PMT_CTRL_PME_TYPE_ 0x00000040 /* R/W
+ * Not Affected by
+ * SW Reset */
+#define PMT_CTRL_WUPS_ 0x00000030 /* R/WC */
+#define PMT_CTRL_WUPS_NOWAKE_ 0x00000000 /* R/WC */
+#define PMT_CTRL_WUPS_ED_ 0x00000010 /* R/WC */
+#define PMT_CTRL_WUPS_WOL_ 0x00000020 /* R/WC */
+#define PMT_CTRL_WUPS_MULTI_ 0x00000030 /* R/WC */
+#define PMT_CTRL_PME_IND_ 0x00000008 /* R/W */
+#define PMT_CTRL_PME_POL_ 0x00000004 /* R/W */
+#define PMT_CTRL_PME_EN_ 0x00000002 /* R/W
+ * Not Affected by
+ * SW Reset */
+#define PMT_CTRL_READY_ 0x00000001 /* RO */
+
+#define GPIO_CFG 0x88
+#define GPIO_CFG_LED3_EN_ 0x40000000 /* R/W */
+#define GPIO_CFG_LED2_EN_ 0x20000000 /* R/W */
+#define GPIO_CFG_LED1_EN_ 0x10000000 /* R/W */
+#define GPIO_CFG_GPIO2_INT_POL_ 0x04000000 /* R/W */
+#define GPIO_CFG_GPIO1_INT_POL_ 0x02000000 /* R/W */
+#define GPIO_CFG_GPIO0_INT_POL_ 0x01000000 /* R/W */
+#define GPIO_CFG_EEPR_EN_ 0x00700000 /* R/W */
+#define GPIO_CFG_GPIOBUF2_ 0x00040000 /* R/W */
+#define GPIO_CFG_GPIOBUF1_ 0x00020000 /* R/W */
+#define GPIO_CFG_GPIOBUF0_ 0x00010000 /* R/W */
+#define GPIO_CFG_GPIODIR2_ 0x00000400 /* R/W */
+#define GPIO_CFG_GPIODIR1_ 0x00000200 /* R/W */
+#define GPIO_CFG_GPIODIR0_ 0x00000100 /* R/W */
+#define GPIO_CFG_GPIOD4_ 0x00000020 /* R/W */
+#define GPIO_CFG_GPIOD3_ 0x00000010 /* R/W */
+#define GPIO_CFG_GPIOD2_ 0x00000004 /* R/W */
+#define GPIO_CFG_GPIOD1_ 0x00000002 /* R/W */
+#define GPIO_CFG_GPIOD0_ 0x00000001 /* R/W */
+
+#define GPT_CFG 0x8C
+#define GPT_CFG_TIMER_EN_ 0x20000000 /* R/W */
+#define GPT_CFG_GPT_LOAD_ 0x0000FFFF /* R/W */
+
+#define GPT_CNT 0x90
+#define GPT_CNT_GPT_CNT_ 0x0000FFFF /* RO */
+
+#define ENDIAN 0x98
+#define FREE_RUN 0x9C
+#define RX_DROP 0xA0
+#define MAC_CSR_CMD 0xA4
+#define MAC_CSR_CMD_CSR_BUSY_ 0x80000000 /* Self Clearing */
+#define MAC_CSR_CMD_R_NOT_W_ 0x40000000 /* R/W */
+#define MAC_CSR_CMD_CSR_ADDR_ 0x000000FF /* R/W */
+
+#define MAC_CSR_DATA 0xA8
+#define AFC_CFG 0xAC
+#define AFC_CFG_AFC_HI_ 0x00FF0000 /* R/W */
+#define AFC_CFG_AFC_LO_ 0x0000FF00 /* R/W */
+#define AFC_CFG_BACK_DUR_ 0x000000F0 /* R/W */
+#define AFC_CFG_FCMULT_ 0x00000008 /* R/W */
+#define AFC_CFG_FCBRD_ 0x00000004 /* R/W */
+#define AFC_CFG_FCADD_ 0x00000002 /* R/W */
+#define AFC_CFG_FCANY_ 0x00000001 /* R/W */
+
+#define E2P_CMD 0xB0
+#define E2P_CMD_EPC_BUSY_ 0x80000000 /* Self Clearing */
+#define E2P_CMD_EPC_CMD_ 0x70000000 /* R/W */
+#define E2P_CMD_EPC_CMD_READ_ 0x00000000 /* R/W */
+#define E2P_CMD_EPC_CMD_EWDS_ 0x10000000 /* R/W */
+#define E2P_CMD_EPC_CMD_EWEN_ 0x20000000 /* R/W */
+#define E2P_CMD_EPC_CMD_WRITE_ 0x30000000 /* R/W */
+#define E2P_CMD_EPC_CMD_WRAL_ 0x40000000 /* R/W */
+#define E2P_CMD_EPC_CMD_ERASE_ 0x50000000 /* R/W */
+#define E2P_CMD_EPC_CMD_ERAL_ 0x60000000 /* R/W */
+#define E2P_CMD_EPC_CMD_RELOAD_ 0x70000000 /* R/W */
+#define E2P_CMD_EPC_TIMEOUT_ 0x00000200 /* R */
+#define E2P_CMD_MAC_ADDR_LOADED_ 0x00000100 /* RO */
+#define E2P_CMD_EPC_ADDR_ 0x000000FF /* R/W */
+
+#define E2P_DATA 0xB4
+#define E2P_DATA_EEPROM_DATA_ 0x000000FF /* R/W */
+#define LAN_REGISTER_EXTENT 0x00000100
+
+#define LINK_OFF 0x00
+#define LINK_SPEED_10HD 0x01
+#define LINK_SPEED_10FD 0x02
+#define LINK_SPEED_100HD 0x04
+#define LINK_SPEED_100FD 0x08
+#define LINK_SYMMETRIC_PAUSE 0x10
+#define LINK_ASYMMETRIC_PAUSE 0x20
+#define LINK_AUTO_NEGOTIATE 0x40
+
+/*
+ * MAC Control and Status Register (Indirect Address)
+ * Offset (through the MAC_CSR CMD and DATA port)
+ */
+#define MAC_CR 0x01 /* R/W */
+
+/* MAC_CR - MAC Control Register */
+#define MAC_CR_RXALL_ 0x80000000
+#define MAC_CR_HBDIS_ 0x10000000
+#define MAC_CR_RCVOWN_ 0x00800000
+#define MAC_CR_LOOPBK_ 0x00200000
+#define MAC_CR_FDPX_ 0x00100000
+#define MAC_CR_MCPAS_ 0x00080000
+#define MAC_CR_PRMS_ 0x00040000
+#define MAC_CR_INVFILT_ 0x00020000
+#define MAC_CR_PASSBAD_ 0x00010000
+#define MAC_CR_HFILT_ 0x00008000
+#define MAC_CR_HPFILT_ 0x00002000
+#define MAC_CR_LCOLL_ 0x00001000
+#define MAC_CR_BCAST_ 0x00000800
+#define MAC_CR_DISRTY_ 0x00000400
+#define MAC_CR_PADSTR_ 0x00000100
+#define MAC_CR_BOLMT_MASK_ 0x000000C0
+#define MAC_CR_DFCHK_ 0x00000020
+#define MAC_CR_TXEN_ 0x00000008
+#define MAC_CR_RXEN_ 0x00000004
+
+#define ADDRH 0x02 /* R/W mask 0x0000FFFFUL */
+#define ADDRL 0x03 /* R/W mask 0xFFFFFFFFUL */
+#define HASHH 0x04 /* R/W */
+#define HASHL 0x05 /* R/W */
+
+#define MII_ACC 0x06 /* R/W */
+#define MII_ACC_PHY_ADDR_ 0x0000F800
+#define MII_ACC_MIIRINDA_ 0x000007C0
+#define MII_ACC_MII_WRITE_ 0x00000002
+#define MII_ACC_MII_BUSY_ 0x00000001
+
+#define MII_DATA 0x07 /* R/W mask 0x0000FFFFUL */
+
+#define FLOW 0x08 /* R/W */
+#define FLOW_FCPT_ 0xFFFF0000
+#define FLOW_FCPASS_ 0x00000004
+#define FLOW_FCEN_ 0x00000002
+#define FLOW_FCBSY_ 0x00000001
+
+#define VLAN1 0x09 /* R/W mask 0x0000FFFFUL */
+#define VLAN2 0x0A /* R/W mask 0x0000FFFFUL */
+
+#define WUFF 0x0B /* WO */
+
+#define WUCSR 0x0C /* R/W */
+#define WUCSR_GUE_ 0x00000200
+#define WUCSR_WUFR_ 0x00000040
+#define WUCSR_MPR_ 0x00000020
+#define WUCSR_WAKE_EN_ 0x00000004
+#define WUCSR_MPEN_ 0x00000002
+
+/*
+ * Phy register offsets and bit definitions
+ */
+#define LAN9118_PHY_ID 0x00C0001C
+
+#define PHY_BCR 0
+#define PHY_BCR_RESET_ 0x8000
+#define PHY_BCR_SPEED_SELECT_ 0x2000
+#define PHY_BCR_AUTO_NEG_ENABLE_ 0x1000
+#define PHY_BCR_RESTART_AUTO_NEG_ 0x0200
+#define PHY_BCR_DUPLEX_MODE_ 0x0100
+
+#define PHY_BSR 1
+#define PHY_BSR_LINK_STATUS_ 0x0004
+#define PHY_BSR_REMOTE_FAULT_ 0x0010
+#define PHY_BSR_AUTO_NEG_COMP_ 0x0020
+
+#define PHY_ID_1 2
+#define PHY_ID_2 3
+
+#define PHY_ANEG_ADV 4
+#define PHY_ANEG_ADV_PAUSE_ 0x0C00
+#define PHY_ANEG_ADV_ASYMP_ 0x0800
+#define PHY_ANEG_ADV_SYMP_ 0x0400
+#define PHY_ANEG_ADV_10H_ 0x020
+#define PHY_ANEG_ADV_10F_ 0x040
+#define PHY_ANEG_ADV_100H_ 0x080
+#define PHY_ANEG_ADV_100F_ 0x100
+#define PHY_ANEG_ADV_SPEED_ 0x1E0
+
+#define PHY_ANEG_LPA 5
+#define PHY_ANEG_LPA_ASYMP_ 0x0800
+#define PHY_ANEG_LPA_SYMP_ 0x0400
+#define PHY_ANEG_LPA_100FDX_ 0x0100
+#define PHY_ANEG_LPA_100HDX_ 0x0080
+#define PHY_ANEG_LPA_10FDX_ 0x0040
+#define PHY_ANEG_LPA_10HDX_ 0x0020
+
+/* Mode Control/Status Register */
+#define PHY_MODE_CTRL_STS 17
+#define MODE_CTRL_STS_EDPWRDOWN_ 0x2000
+#define MODE_CTRL_STS_ENERGYON_ 0x0002
+
+#define PHY_INT_SRC 29
+#define PHY_INT_SRC_ENERGY_ON_ 0x0080
+#define PHY_INT_SRC_ANEG_COMP_ 0x0040
+#define PHY_INT_SRC_REMOTE_FAULT_ 0x0020
+#define PHY_INT_SRC_LINK_DOWN_ 0x0010
+
+#define PHY_INT_MASK 30
+#define PHY_INT_MASK_ENERGY_ON_ 0x0080
+#define PHY_INT_MASK_ANEG_COMP_ 0x0040
+#define PHY_INT_MASK_REMOTE_FAULT_ 0x0020
+#define PHY_INT_MASK_LINK_DOWN_ 0x0010
+
+#define PHY_SPECIAL 31
+#define PHY_SPECIAL_SPD_ 0x001C
+#define PHY_SPECIAL_SPD_10HALF_ 0x0004
+#define PHY_SPECIAL_SPD_10FULL_ 0x0014
+#define PHY_SPECIAL_SPD_100HALF_ 0x0008
+#define PHY_SPECIAL_SPD_100FULL_ 0x0018
+
+#endif /* __SMSC911X_H__ */
--
1.4.0
^ permalink raw reply related [flat|nested] 20+ messages in thread
* Re: SMSC LAN911x and LAN921x vendor driver
2006-07-28 11:48 ` SMSC LAN911x and LAN921x vendor driver Steve Glendinning
@ 2006-07-28 14:31 ` Stephen Hemminger
2006-07-28 21:38 ` Francois Romieu
1 sibling, 0 replies; 20+ messages in thread
From: Stephen Hemminger @ 2006-07-28 14:31 UTC (permalink / raw)
To: Steve Glendinning; +Cc: netdev, Ian Saturley, Bahadir Balban
> +/* Tasklet declarations */
> +static unsigned long rx_tasklet_parameter;
> +static void smsc911x_rx_tasklet(unsigned long data);
> +
> +DECLARE_TASKLET(rx_tasklet, smsc911x_rx_tasklet, 0);
You can make this local with
static DECLARE_TASKLET(rx_tasklet, smsc911x_rx_tasklet, 0);
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: SMSC LAN911x and LAN921x vendor driver
2006-07-28 11:48 ` SMSC LAN911x and LAN921x vendor driver Steve Glendinning
2006-07-28 14:31 ` Stephen Hemminger
@ 2006-07-28 21:38 ` Francois Romieu
2006-07-29 0:38 ` Stephen Hemminger
` (2 more replies)
1 sibling, 3 replies; 20+ messages in thread
From: Francois Romieu @ 2006-07-28 21:38 UTC (permalink / raw)
To: Steve Glendinning; +Cc: netdev, Ian Saturley, Bahadir Balban, Stephen Hemminger
[...]
> diff --git a/drivers/net/smsc911x.c b/drivers/net/smsc911x.c
> new file mode 100644
> index 0000000..12bbe67
> --- /dev/null
> +++ b/drivers/net/smsc911x.c
[...]
> +/* Tasklet declarations */
> +static unsigned long rx_tasklet_parameter;
> +static void smsc911x_rx_tasklet(unsigned long data);
> +
> +DECLARE_TASKLET(rx_tasklet, smsc911x_rx_tasklet, 0);
> +MODULE_LICENSE("GPL");
> +
> +/* MAC */
[lots of forward declarations]
Despite Jeff claiming otherwise, I see no added value in forward
declarations. It adds bloat, it pollutes ctags and it is inferior
to real kernel docbook documentation.
[...]
> +/* Linux network device interface */
> +static int smsc911x_open(struct net_device *dev);
> +static int smsc911x_stop(struct net_device *dev);
> +static int smsc911x_hard_start_xmit(struct sk_buff *skb,
> + struct net_device *dev);
> +
> +static struct net_device_stats *smsc911x_get_stats(struct net_device *dev);
> +static void smsc911x_set_multicast_list(struct net_device *dev);
> +static irqreturn_t smsc911x_irqhandler(int irq, void *dev_id,
> + struct pt_regs *regs);
> +
> +/* Module interface */
> +static int smsc911x_init_module(void);
> +static void smsc911x_cleanup_module(void);
> +
> +/* Driver interface */
> +static int smsc911x_drv_probe(struct platform_device *pdev);
> +static int smsc911x_drv_remove(struct platform_device *pdev);
These one are completely useless.
> +/* Entry point for starting/opening the interface */
> +static int smsc911x_open(struct net_device *dev)
> +{
> + struct smsc911x_data *pdata;
> + unsigned int mac_high16;
> + unsigned int mac_low32;
> + unsigned int timeout;
> + unsigned int intcfg;
> + int result;
> +
> + /* Set interrupt deassertion to 220uS */
> + intcfg = 22 << 24;
> + timeout = 1000;
> + result = -ENODEV;
> +
> + pdata = netdev_priv(dev);
It is quite common to set pdata on flight, i.e.:
struct smsc911x_data *pdata = netdev_priv(dev);
Same thing for 'result'.
> +
> + /* Initialise smsc911x */
> +
> + /*
> + * dwIntCfg|=INT_CFG_IRQ_POL_; use this to set IRQ_POL bit
> + * dwIntCfg|=INT_CFG_IRQ_TYPE_; use this to set IRQ_TYPE bit
> + */
> + if (!smsc911x_lan_initialise(pdata, intcfg))
> + goto done;
> +
> + SMSC_TRACE("Testing irq handler using IRQ %d", dev->irq);
> + pdata->request_irq_disable = 0;
> + pdata->software_irq_signal = 0;
> + smsc911x_reg_write((smsc911x_reg_read(pdata, INT_EN) |
> + INT_EN_SW_INT_EN_), pdata, INT_EN);
> + do {
> + udelay(10);
> + timeout--;
> + } while (timeout && (!pdata->software_irq_signal));
> +
> + if (!pdata->software_irq_signal) {
> + printk("<1>ISR failed signaling test.");
Should be printk(KERN_XYZ, ...
It would be nice to display the device name too.
> + result = -ENODEV;
> + goto done;
> + }
> + SMSC_TRACE("IRQ handler passed test using IRQ %d", dev->irq);
> +
> + printk("%s: SMSC911x/921x identified at %#08x, IRQ: %d\n", dev->name,
> + pdata->base, dev->irq);
printk(KERN_XYZ, ...
[...]
> +static int smsc911x_stop(struct net_device *dev)
> +{
> + unsigned long flags;
> + unsigned long base;
> + unsigned long idrev;
> + struct smsc911x_data *pdata;
> + struct net_device *pnetdev;
> +
> + pdata = netdev_priv(dev);
> +
> + pdata->stop_link_poll = 1;
> + del_timer_sync(&pdata->link_poll_timer);
> +
> + spin_lock_irqsave(&dev->_xmit_lock, flags);
If this is supposed to protect against hard_start_xmit, it is not needed.
> + smsc911x_reg_write((smsc911x_reg_read(pdata, INT_CFG) &
> + (~INT_CFG_IRQ_EN_)), pdata, INT_CFG);
> + netif_stop_queue(pdata->dev);
Any reason why 'pdata->dev' would be different from 'dev' ?
pnetdev seems redundant with dev.
> + spin_unlock_irqrestore(&dev->_xmit_lock, flags);
> +
> + /* At this point all Rx and Tx activity is stopped */
> + pdata->stats.rx_dropped += smsc911x_reg_read(pdata, RX_DROP);
> + smsc911x_tx_update_txcounters(pdata);
> +
> + /* Preserve important fields */
> + base = pdata->base;
> + idrev = pdata->idrev;
> + pnetdev = pdata->dev;
> +
> + /* Clear all structure */
> + memset((void *)pdata, 0, sizeof(struct smsc911x_data));
Useless conversion to void *
> +static int smsc911x_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
> +{
[...]
> + return 0;
s/0/NETDEV_TX_OK/
[...]
> +/* Entry point for setting addressing modes */
> +static void smsc911x_set_multicast_list(struct net_device *dev)
> +{
> + struct smsc911x_data *pdata;
> + unsigned long flags;
> +
> + pdata = netdev_priv(dev);
> +
> + spin_lock_irqsave(&pdata->phy_lock, flags);
> +
> + if (dev->flags & IFF_PROMISC) {
> + /* Enabling promiscuous mode */
> + pdata->set_bits_mask = MAC_CR_PRMS_;
> + pdata->clear_bits_mask = (MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
> + pdata->hashhi = 0;
> + pdata->hashlo = 0;
> + goto prepare;
> + }
I really enjoy 'goto' too but what is wrong with 'if (...) else if (...)' ?
> +
> + if (dev->flags & IFF_ALLMULTI) {
> + /* Enabling all multicast mode */
> + pdata->set_bits_mask = MAC_CR_MCPAS_;
> + pdata->clear_bits_mask = (MAC_CR_PRMS_ | MAC_CR_HPFILT_);
> + pdata->hashhi = 0;
> + pdata->hashlo = 0;
> + goto prepare;
> + }
> + if (dev->mc_count > 0) {
> + /* Enabling specific multicast addresses */
> + unsigned int hash_high = 0;
> + unsigned int hash_low = 0;
> + unsigned int count = 0;
> + struct dev_mc_list *mc_list = dev->mc_list;
> +
> + pdata->set_bits_mask = MAC_CR_HPFILT_;
> + pdata->clear_bits_mask = (MAC_CR_PRMS_ | MAC_CR_MCPAS_);
> +
> + while (mc_list) {
> + count++;
> + if ((mc_list->dmi_addrlen) == 6) {
> + unsigned int mask = 0x01;
> + unsigned int bitnum;
> + bitnum = smsc911x_hash(mc_list->dmi_addr);
> + mask <<= (bitnum & 0x1F);
> + if (bitnum & 0x20) {
> + hash_high |= mask;
> + } else {
> + hash_low |= mask;
> + }
No brace around single statement please.
> + } else {
> + SMSC_WARNING("dmi_addrlen != 6");
> + }
> + mc_list = mc_list->next;
> + }
> + if (count != (unsigned int)dev->mc_count)
> + SMSC_WARNING("mc_count != dev->mc_count");
> +
> + pdata->hashhi = hash_high;
> + pdata->hashlo = hash_low;
> + } else {
> + /* Enabling local MAC address only */
> + pdata->set_bits_mask = 0L;
> + pdata->clear_bits_mask =
> + (MAC_CR_PRMS_ | MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
> + pdata->hashhi = 0UL;
> + pdata->hashlo = 0UL;
> + }
> +
> + prepare:
Kill it :o)
[...]
> +static irqreturn_t
> +smsc911x_irqhandler(int irq, void *dev_id, struct pt_regs *regs)
> +{
> + unsigned int intcfg;
> + unsigned int intsts;
> + int serviced;
> + unsigned int reserved_bits;
> + struct smsc911x_data *pdata;
> +
> + intcfg = 0;
> + intsts = 0;
> + serviced = IRQ_NONE;
> + reserved_bits = 0x00FFCEEE;
> +
> + pdata = (struct smsc911x_data *)dev_id;
Useless cast from void *.
> + BUG_ON(!pdata);
Don't worry, you'll know soon enough if it's NULL.
> +
> + intcfg = smsc911x_reg_read(pdata, INT_CFG);
> +
> + if (unlikely((intcfg & 0x00001100) != 0x00001100)) {
> + SMSC_TRACE("Spurious interrupt, intcfg: 0x%08X", intcfg);
> + goto done;
> + }
> +
> + /* this could mean surprise removal */
> + if (unlikely(intcfg & reserved_bits)) {
> + SMSC_WARNING("SMSC911x irq handler, reserved bits are high.");
> + goto done;
> + }
> +
> + intsts = smsc911x_reg_read(pdata, INT_STS);
> + if (unlikely(intsts & INT_STS_SW_INT_)) {
> + smsc911x_reg_write((smsc911x_reg_read(pdata, INT_EN)
> + & (~INT_EN_SW_INT_EN_)), pdata, INT_EN);
> + smsc911x_reg_write(INT_STS_SW_INT_, pdata, INT_STS);
> + pdata->software_irq_signal = 1;
> + serviced = IRQ_HANDLED;
> + if (pdata->request_irq_disable) {
> + smsc911x_reg_write((smsc911x_reg_read(pdata, INT_CFG)
> + & (~INT_CFG_IRQ_EN_)), pdata,
> + INT_CFG);
> + /* Prevent irqs from being handled */
> + intsts = 0;
> + }
> + if (pdata->multicast_update_pending) {
> + smsc911x_rx_multicast_update(pdata);
> + }
> + }
> +
> + if (smsc911x_tx_handleirq(pdata, intsts))
> + serviced = IRQ_HANDLED;
> +
> + if (likely(smsc911x_rx_handleirq(pdata, intsts)))
> + serviced = IRQ_HANDLED;
> +
> + if (unlikely(!serviced))
> + SMSC_WARNING("Unserviced irq. intcfg: 0x%08X, intsts: "
> + "0x%08X, int_en: 0x%08X", intcfg, intsts,
> + smsc911x_reg_read(pdata, INT_EN));
> + done:
Please label at the start of the line.
> + return serviced;
> +}
> +
> +/* Autodetects and initialises external phy for SMSC9115 and SMSC9117 flavors.
> + * If something goes wrong, returns -ENODEV to revert back to internal phy. */
> +static int smsc911x_phy_initialise_external(struct smsc911x_data *pdata)
> +{
> + unsigned int address;
> + unsigned int hwcfg;
> + unsigned int phyid1;
> + unsigned int phyid2;
> +
> + hwcfg = smsc911x_reg_read(pdata, HW_CFG);
> +
> + /* External phy is requested, supported, and detected */
> + if (hwcfg & HW_CFG_EXT_PHY_DET_) {
> +
> + /* Attempt to switch to external phy for auto-detecting
> + * its address. Assuming tx and rx are stopped because
> + * smsc911x_phy_initialise is called before
> + * smsc911x_rx_initialise and tx_initialise.
> + */
> +
> + /* Disable phy clocks to the MAC */
> + hwcfg &= (~HW_CFG_PHY_CLK_SEL_);
> + hwcfg |= HW_CFG_PHY_CLK_SEL_CLK_DIS_;
> + smsc911x_reg_write(hwcfg, pdata, HW_CFG);
> + udelay(10); /* Enough time for clocks to stop */
I assume that writes are never posted, right ?
[...]
> +#ifdef USE_PHY_WORK_AROUND
> +static int smsc911x_phy_reset(struct smsc911x_data *pdata)
> +{
> + int result = 0;
> + unsigned int temp = 0;
> + unsigned int lcount = 100000;
> +
> + SMSC_TRACE("Performing PHY BCR Reset");
> + smsc911x_phy_write(pdata, PHY_BCR, PHY_BCR_RESET_);
> + do {
> + udelay(10);
> + temp = smsc911x_phy_read(pdata, PHY_BCR);
> + lcount--;
> + } while ((lcount > 0) && (temp & PHY_BCR_RESET_));
> +
> + if (temp & PHY_BCR_RESET_) {
> + SMSC_WARNING("PHY reset failed to complete.");
> + goto done;
> + }
> + /* Extra delay required because the phy may not be completed with
> + * its reset when PHY_BCR_RESET_ is cleared. Specs say 256 uS is
> + * enough delay but using 500 here to be safe
> + */
> + udelay(500);
If you are in sleepable context, a msleep() may chew less cpu.
[...]
> +/* Fetches a MAC register value. Assumes phy_lock is acquired */
> +static unsigned int
> +smsc911x_mac_read(struct smsc911x_data *pdata, unsigned int offset)
> +{
> + unsigned int result = 0xFFFFFFFF;
> + volatile unsigned int temp = 0;
> +
> + /* Wait until not busy */
> + if (unlikely
> + (smsc911x_reg_read(pdata, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY_)) {
> + SMSC_WARNING("smsc911x_mac_read failed, "
> + "MAC already busy at entry");
> + goto done;
> + }
> +
> + /* Send the MAC cmd */
> + smsc911x_reg_write(((offset & 0x000000FF) | MAC_CSR_CMD_CSR_BUSY_
> + | MAC_CSR_CMD_R_NOT_W_), pdata, MAC_CSR_CMD);
> +
> + temp = smsc911x_reg_read(pdata, BYTE_TEST); /* To flush previous write */
readl() + volatile ?
[...]
> +static void smsc911x_rx_processpackets(struct smsc911x_data *pdata)
> +{
> + unsigned int rxstat;
> + unsigned int *bufptr;
> +
> + pdata->rx_congested = 0;
> + while ((rxstat = smsc911x_rx_pop_rxstatus(pdata)) != 0) {
> + unsigned int pktlength = ((rxstat & 0x3FFF0000) >> 16);
> + smsc911x_rx_counterrors(pdata, rxstat);
> +
> + if (likely((rxstat & RX_STS_ES_) == 0)) {
> + struct sk_buff *skb = NULL;
> + skb = dev_alloc_skb(pktlength + 2);
> + if (likely(skb)) {
> + skb->data = skb->head;
> + skb->tail = skb->head;
> + /* Align IP on 16B boundary */
> + skb_reserve(skb, 2);
> + skb_put(skb, pktlength - 4);
> +
> + /* Update counters */
> + pdata->stats.rx_packets++;
> + pdata->stats.rx_bytes += (pktlength - 4);
> + bufptr = (unsigned int *)skb->head;
> + smsc911x_rx_readfifo(pdata, bufptr,
> + (pktlength + 2 + 3) >> 2);
> +
> + smsc911x_rx_handoffskb(pdata, skb);
> + continue;
> + } else {
> + SMSC_WARNING("Unable to allocate sk_buff "
> + "for rx packet, in PIO path");
> + pdata->stats.rx_dropped++;
> + }
> + }
> + /* At this point, the packet is to be read out
> + * of the fifo and discarded */
> + pktlength += 2 + 3;
> + pktlength >>= 2;
> + smsc911x_rx_fastforward(pdata, pktlength);
> + }
> + pdata->stats.rx_dropped += smsc911x_reg_read(pdata, RX_DROP);
> + smsc911x_reg_write(INT_STS_RSFL_, pdata, INT_STS);
dev->last_rx should be updated somewhere.
[...]
> +/* Receive tasklet */
> +static void smsc911x_rx_tasklet(unsigned long data)
> +{
> + struct net_device *netdev;
> + struct smsc911x_data *pdata;
> +
> + netdev = (struct net_device *)rx_tasklet_parameter;
So this driver will not support more than one adapter ?
[...]
> +/* Receiver irq handler */
> +static int smsc911x_rx_handleirq(struct smsc911x_data *pdata,
> + unsigned int intsts)
> +{
> + int result = 0;
> +
> + if (unlikely(intsts & INT_STS_RXE_)) {
> + smsc911x_reg_write(INT_STS_RXE_, pdata, INT_STS);
> + result = 1;
> + }
> + if (!(intsts & INT_STS_RSFL_)) {
> + return result;
> + }
> +
> + result = 1;
> + smsc911x_reg_write(smsc911x_reg_read(pdata, INT_CFG) &
> + (~INT_CFG_IRQ_EN_), pdata, INT_CFG);
> + tasklet_schedule(&rx_tasklet);
It smells like hand-crafted NAPI. What's wrong with it ?
[...]
> +/* Returns hash bit number for given MAC address
> + * Example:
> + * 01 00 5E 00 00 01 -> returns bit number 31 */
> +static unsigned int smsc911x_hash(char addr[6])
> +{
> + int i;
> + int bit;
> + unsigned int crc;
> + unsigned int poly;
> + unsigned int result;
> + unsigned int data;
> +
> + crc = 0xFFFFFFFF;
> + poly = 0xEDB88320;
$ grep -i 0xEDB88320 lib/*
lib/crc32defs.h:#define CRCPOLY_LE 0xedb88320
Any chance to reuse lib/crc32.c::crc32_le() ?
[...]
> +static void smsc911x_rx_multicast_update(struct smsc911x_data *pdata)
> +{
> + unsigned long flags;
> + unsigned int timeout;
> + unsigned int mac_cr;
> +
> + /* This function is only called for older LAN911x devices
> + * (revA or revB), where MAC_CR, HASHH and HASHL should not
> + * be modified during Rx - newer devices immediately update the
> + * registers */
> +
> + local_irq_save(flags);
> +
> + /* Stop Rx */
> + mac_cr = smsc911x_mac_read(pdata, MAC_CR);
> + mac_cr &= ~(MAC_CR_RXEN_);
> + smsc911x_mac_write(pdata, MAC_CR, mac_cr);
> +
> + /* Poll until Rx has stopped. If a frame is being recieved, this will
> + * block until the end of this frame. (this may take a long time at
> + * 10Mbps) */
> + timeout = 2000;
> + while ((timeout--)
> + && (!(smsc911x_reg_read(pdata, INT_STS) & INT_STS_RXSTOP_INT_))) {
> + udelay(1);
In a completely ideal world the driver would probably race outside of an
irq disabled section until it grabs the napi poll handler, thus preserving
the nice low latency property of the kernel.
Nevermind :o}
[...]
> +static int smsc911x_init(struct net_device *netdev)
> +{
> + int result;
> + unsigned long idrev;
> + unsigned int mac_high16;
> + unsigned int mac_low32;
> + struct smsc911x_data *pdata;
> +
> + idrev = 0;
> + pdata = 0;
> + result = -ENODEV;
> +
> + BUG_ON(!netdev);
Useless...
> +
> + SMSC_TRACE("Driver Parameters:");
> + SMSC_TRACE("LAN base: 0x%08lX", netdev->base_addr);
...because you'll see a nice trace here (notwithstanding the fact that
the condition can never be satisfied).
> + SMSC_TRACE("IRQ: %d", netdev->irq);
> + SMSC_TRACE("PHY will be autodetected.");
> + BUG_ON(!netdev_priv(netdev));
Sic.
[...]
> + ether_setup(netdev);
> + netdev->open = smsc911x_open;
> + netdev->stop = smsc911x_stop;
> + netdev->hard_start_xmit = smsc911x_hard_start_xmit;
> + netdev->get_stats = smsc911x_get_stats;
> + netdev->set_multicast_list = smsc911x_set_multicast_list;
> + netdev->flags |= IFF_MULTICAST;
No ethtool support at all ?
[...]
> +static int smsc911x_drv_probe(struct platform_device *pdev)
> +{
> + struct net_device *netdev;
> + struct resource *res;
> + unsigned int base;
> + int res_size;
> + int retval;
> + res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
> + "smsc911x-memory");
> + if (!res)
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + if (!res) {
> + retval = -ENODEV;
> + goto out;
> + }
> + res_size = res->end - res->start;
> +
> + if (!request_mem_region(res->start, res_size, SMSC_CHIPNAME)) {
> + retval = -EBUSY;
> + goto out;
> + }
> +
> + netdev = alloc_etherdev(sizeof(struct smsc911x_data));
> + if (!netdev) {
> + printk("%s: Could not allocate device.\n", SMSC_CHIPNAME);
> + retval = -ENOMEM;
> + goto out_release_io;
> + }
> + SET_MODULE_OWNER(netdev);
> + SET_NETDEV_DEV(netdev, &pdev->dev);
> +
> + /* Global pointer to netdev, used by tasklets */
> + rx_tasklet_parameter = (unsigned long)netdev;
> + netdev->irq = platform_get_irq(pdev, 0);
> + netdev->base_addr = (unsigned int)ioremap_nocache(res->start, res_size);
Converting a nice void __iomem * variable to an unsigned int from the
start is moderately nice. What about storing it in pdata like in any
modern driver ? It would help the incoming jihad for base_addr removal.
> + base = netdev->base_addr;
> + if (netdev->base_addr == 0) {
> + SMSC_WARNING("Error smsc911x base address invalid");
> + retval = -ENOMEM;
> + goto out_free_netdev;
> + }
> +
> + if ((retval = smsc911x_init(netdev)) < 0)
> + goto out_unmap_io;
> +
> + if (request_irq(netdev->irq, smsc911x_irqhandler,
retval = request_irq(...)
if (retval < 0) {
...
As a general note, the driver could surely propagate more return values
instead of relying on local set/test against 0/1.
[...]
> diff --git a/drivers/net/smsc911x.h b/drivers/net/smsc911x.h
> new file mode 100644
> index 0000000..175f6cb
> --- /dev/null
> +++ b/drivers/net/smsc911x.h
[...]
> +/*
> + * Phy register offsets and bit definitions
> + */
> +#define LAN9118_PHY_ID 0x00C0001C
> +
> +#define PHY_BCR 0
Duplicates include/linux/mii.h::MII_BMCR
> +#define PHY_BCR_RESET_ 0x8000
> +#define PHY_BCR_SPEED_SELECT_ 0x2000
> +#define PHY_BCR_AUTO_NEG_ENABLE_ 0x1000
> +#define PHY_BCR_RESTART_AUTO_NEG_ 0x0200
> +#define PHY_BCR_DUPLEX_MODE_ 0x0100
> +
> +#define PHY_BSR 1
Duplicates include/linux/mii.h::MII_BMSR
etc.
--
Ueimor
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: SMSC LAN911x and LAN921x vendor driver
2006-07-28 21:38 ` Francois Romieu
@ 2006-07-29 0:38 ` Stephen Hemminger
2006-07-31 20:20 ` Steve.Glendinning
2006-08-01 15:12 ` [PATCH] " Steve Glendinning
2 siblings, 0 replies; 20+ messages in thread
From: Stephen Hemminger @ 2006-07-29 0:38 UTC (permalink / raw)
To: Francois Romieu; +Cc: Steve Glendinning, netdev, Ian Saturley, Bahadir Balban
Could the tasklet be replaced by using NAPI (dev->poll) routine?
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: SMSC LAN911x and LAN921x vendor driver
2006-07-28 21:38 ` Francois Romieu
2006-07-29 0:38 ` Stephen Hemminger
@ 2006-07-31 20:20 ` Steve.Glendinning
2006-08-01 15:12 ` [PATCH] " Steve Glendinning
2 siblings, 0 replies; 20+ messages in thread
From: Steve.Glendinning @ 2006-07-31 20:20 UTC (permalink / raw)
To: Francois Romieu; +Cc: Bahadir Balban, ian.saturley, netdev, Stephen Hemminger
Hi Francois,
Thanks for your feedback, I have a few questions.
> > + return serviced;
> > +}
> > +
> > +/* Autodetects and initialises external phy for SMSC9115 and SMSC9117
flavors.
> > + * If something goes wrong, returns -ENODEV to revert back to
internal phy. */
> > +static int smsc911x_phy_initialise_external(struct smsc911x_data
*pdata)
> > +{
> > + unsigned int address;
> > + unsigned int hwcfg;
> > + unsigned int phyid1;
> > + unsigned int phyid2;
> > +
> > + hwcfg = smsc911x_reg_read(pdata, HW_CFG);
> > +
> > + /* External phy is requested, supported, and detected */
> > + if (hwcfg & HW_CFG_EXT_PHY_DET_) {
> > +
> > + /* Attempt to switch to external phy for
auto-detecting
> > + * its address. Assuming tx and rx are
stopped because
> > + * smsc911x_phy_initialise is called
before
> > + * smsc911x_rx_initialise and
tx_initialise.
> > + */
> > +
> > + /* Disable phy clocks to the MAC */
> > + hwcfg &= (~HW_CFG_PHY_CLK_SEL_);
> > + hwcfg |= HW_CFG_PHY_CLK_SEL_CLK_DIS_;
> > + smsc911x_reg_write(hwcfg, pdata, HW_CFG);
> > + udelay(10); /* Enough time
for clocks to stop */
>
> I assume that writes are never posted, right ?
>
I don't understand the question, what do you mean?
> > +static void smsc911x_rx_multicast_update(struct smsc911x_data *pdata)
> > +{
> > + unsigned long flags;
> > + unsigned int timeout;
> > + unsigned int mac_cr;
> > +
> > + /* This function is only called for older LAN911x devices
> > + * (revA or revB), where MAC_CR, HASHH and HASHL should
not
> > + * be modified during Rx - newer devices immediately
update the
> > + * registers */
> > +
> > + local_irq_save(flags);
> > +
> > + /* Stop Rx */
> > + mac_cr = smsc911x_mac_read(pdata, MAC_CR);
> > + mac_cr &= ~(MAC_CR_RXEN_);
> > + smsc911x_mac_write(pdata, MAC_CR, mac_cr);
> > +
> > + /* Poll until Rx has stopped. If a frame is being
recieved, this will
> > + * block until the end of this frame. (this may take a
long time at
> > + * 10Mbps) */
> > + timeout = 2000;
> > + while ((timeout--)
> > + && (!(smsc911x_reg_read(pdata, INT_STS) &
INT_STS_RXSTOP_INT_))) {
> > + udelay(1);
>
>
> In a completely ideal world the driver would probably race outside of an
> irq disabled section until it grabs the napi poll handler, thus
preserving
> the nice low latency property of the kernel.
>
> Nevermind :o}
Agreed, I would like to find a nicer way to do this. It's a nasty
workaround to a nasty hardware issue :o}
There are two problems. First, on older hardware revisions the multicast
hash filters (as well as the promisc flag) cannot be modified while rx is
active (bad things might happen). There is an interrupt which can be used
to indicate RX has stopped, but on early hardware this is not 100%
reliable.
The current solution is the simplest option, and works. A better way
could be to use the RX_STOP interrupt, but also schedule a task to run
later "just in case"?
Best Regards,
--
Steve Glendinning
SMSC GmbH
m: +44 777 933 9124
e: steve.glendinning@smsc.com
^ permalink raw reply [flat|nested] 20+ messages in thread
* [PATCH] SMSC LAN911x and LAN921x vendor driver
2006-07-28 21:38 ` Francois Romieu
2006-07-29 0:38 ` Stephen Hemminger
2006-07-31 20:20 ` Steve.Glendinning
@ 2006-08-01 15:12 ` Steve Glendinning
2006-08-01 15:33 ` John W. Linville
` (2 more replies)
2 siblings, 3 replies; 20+ messages in thread
From: Steve Glendinning @ 2006-08-01 15:12 UTC (permalink / raw)
To: netdev
Cc: Ian Saturley, Bahadir Balban, Stephen Hemminger, Francois Romieu,
Steve Glendinning
> > Attached is a driver patch for SMSC911x family of ethernet chips,
> > generated against 2.6.18-rc1 sources. There's a similar driver in the
> > tree; this one has been tested by SMSC on all flavors of the chip and
> > claimed to be efficient.
>
> Updated after feedback from Stephen Hemminger.
>
> Driver updated to also support LAN921x family. Workarounds added for
> known hardware issues.
Many improvements following feedback from Stephen Hemminger and
Francois Romieu:
- Tasklet removed, NAPI poll used instead
- Multiple device support
- style fixes & minor improvements
Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com>
---
drivers/net/Kconfig | 12
drivers/net/Makefile | 1
drivers/net/smsc911x.c | 1931 ++++++++++++++++++++++++++++++++++++++++++++++++
drivers/net/smsc911x.h | 442 +++++++++++
4 files changed, 2386 insertions(+), 0 deletions(-)
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 3918990..bf84e2a 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -865,6 +865,18 @@ config NET_NETX
<file:Documentation/networking/net-modules.txt>. The module
will be called netx-eth.
+config SMSC911X
+ tristate "SMSC LAN911x/LAN921x families embedded ethernet support"
+ depends on NET_ETHERNET
+ select CRC32
+ ---help---
+ Say Y here if you want support for SMSC LAN911x and LAN921x families
+ of ethernet controllers.
+
+ To compile this driver as a module, choose M here and read
+ <file:Documentation/networking/net-modules.txt>. The module
+ will be called smsc911x.
+
config DM9000
tristate "DM9000 support"
depends on (ARM || MIPS) && NET_ETHERNET
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index c91e951..51f680b 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -196,6 +196,7 @@ obj-$(CONFIG_S2IO) += s2io.o
obj-$(CONFIG_MYRI10GE) += myri10ge/
obj-$(CONFIG_SMC91X) += smc91x.o
obj-$(CONFIG_SMC911X) += smc911x.o
+obj-$(CONFIG_SMSC911X) += smsc911x.o
obj-$(CONFIG_DM9000) += dm9000.o
obj-$(CONFIG_FEC_8XX) += fec_8xx/
diff --git a/drivers/net/smsc911x.c b/drivers/net/smsc911x.c
new file mode 100644
index 0000000..053863a
--- /dev/null
+++ b/drivers/net/smsc911x.c
@@ -0,0 +1,1931 @@
+/***************************************************************************
+ *
+ * Copyright (C) 2004-2005 SMSC
+ * Copyright (C) 2005 ARM
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ ***************************************************************************
+ * Rewritten, heavily based on smsc911x simple driver by SMSC.
+ * Partly uses io macros from smc91x.c by Nicolas Pitre
+ *
+ * Supported devices:
+ * LAN9115, LAN9116, LAN9117, LAN9118
+ * LAN9215, LAN9216, LAN9217, LAN9218
+ *
+ * History:
+ * 05/05/2005 bahadir.balban@arm.com
+ * - Transition to linux coding style
+ * - Platform driver and module interface
+ *
+ * 17/07/2006 steve.glendinning@smsc.com
+ * - Added support for LAN921x family
+ * - Added workaround for multicast filters
+ *
+ * 31/07/2006 steve.glendinning@smsc.com
+ * - Removed tasklet, using NAPI poll instead
+ * - Multiple device support
+ * - Large tidy-up following feedback from netdev list
+ */
+
+#include <linux/config.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/etherdevice.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/mii.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/platform_device.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/timer.h>
+#include <linux/version.h>
+#include <linux/crc32.h>
+#include <asm/bug.h>
+#include <asm/bitops.h>
+#include <asm/dma.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+#include "smsc911x.h"
+
+#define SMSC_CHIPNAME "smsc911x"
+
+MODULE_LICENSE("GPL");
+
+/* Writes a packet to the TX_DATA_FIFO */
+static inline void
+smsc911x_tx_writefifo(struct smsc911x_data *pdata, unsigned int *buf,
+ unsigned int wordcount)
+{
+ while (wordcount--) {
+ smsc911x_reg_write(*buf++, pdata, TX_DATA_FIFO);
+ }
+}
+
+/* Reads a packet out of the RX_DATA_FIFO */
+static inline void
+smsc911x_rx_readfifo(struct smsc911x_data *pdata, unsigned int *buf,
+ unsigned int wordcount)
+{
+ while (wordcount--) {
+ *buf++ = smsc911x_reg_read(pdata, RX_DATA_FIFO);
+ }
+}
+
+/* waits for MAC not busy, with timeout. Assumes MacPhyAccessLock has
+ * already been acquired */
+static int smsc911x_mac_notbusy(struct smsc911x_data *pdata)
+{
+ int i;
+
+ for (i = 0; i < 40; i++) {
+ if ((smsc911x_reg_read(pdata, MAC_CSR_CMD)
+ & MAC_CSR_CMD_CSR_BUSY_) == 0) {
+ return 1;
+ }
+ }
+ SMSC_WARNING("Timed out waiting for MAC not BUSY. "
+ "MAC_CSR_CMD: 0x%08X", smsc911x_reg_read(pdata,
+ MAC_CSR_CMD));
+ return 0;
+}
+
+/* Fetches a MAC register value. Assumes phy_lock is acquired */
+static unsigned int
+smsc911x_mac_read(struct smsc911x_data *pdata, unsigned int offset)
+{
+ unsigned int result = 0xFFFFFFFF;
+ unsigned int temp;
+
+ /* Wait until not busy */
+ if (unlikely
+ (smsc911x_reg_read(pdata, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY_)) {
+ SMSC_WARNING("smsc911x_mac_read failed, "
+ "MAC already busy at entry");
+ return result;
+ }
+
+ /* Send the MAC cmd */
+ smsc911x_reg_write(((offset & 0x000000FF) | MAC_CSR_CMD_CSR_BUSY_
+ | MAC_CSR_CMD_R_NOT_W_), pdata, MAC_CSR_CMD);
+
+ /* Workaround for hardware read-after-write restriction */
+ temp = smsc911x_reg_read(pdata, BYTE_TEST);
+
+ /* Wait for the read to happen */
+ if (unlikely(!smsc911x_mac_notbusy(pdata)))
+ SMSC_WARNING("smsc911x_mac_read failed, "
+ "waiting for MAC not busy after read");
+ else
+ result = smsc911x_reg_read(pdata, MAC_CSR_DATA);
+
+ return result;
+}
+
+/* Set a mac register, phy_lock must be acquired before calling */
+static void smsc911x_mac_write(struct smsc911x_data *pdata,
+ unsigned int offset, unsigned int val)
+{
+ unsigned int temp;
+
+ if (unlikely
+ (smsc911x_reg_read(pdata, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY_)) {
+ SMSC_WARNING("smsc911x_mac_write failed, "
+ "MAC already busy at entry");
+ return;
+ }
+
+ /* Send data to write */
+ smsc911x_reg_write(val, pdata, MAC_CSR_DATA);
+
+ /* Write the actual data */
+ smsc911x_reg_write(((offset & 0x000000FF) | MAC_CSR_CMD_CSR_BUSY_),
+ pdata, MAC_CSR_CMD);
+
+ /* Workaround for hardware read-after-write restriction */
+ temp = smsc911x_reg_read(pdata, BYTE_TEST);
+
+ /* Wait for the write to complete */
+ if (unlikely(!smsc911x_mac_notbusy(pdata))) {
+ SMSC_WARNING("smsc911x_mac_write failed, "
+ "waiting for MAC not busy after write");
+ }
+}
+
+/* Gets a phy register, phy_lock must be acquired before calling */
+static unsigned int
+smsc911x_phy_read(struct smsc911x_data *pdata, unsigned int index)
+{
+ unsigned int addr;
+ unsigned int result = 0xFFFF;
+ int i;
+
+ /* Confirm MII not busy */
+ if (unlikely
+ ((smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_) != 0)) {
+ SMSC_WARNING("MII is busy in smsc911x_phy_read???");
+ return 0;
+ }
+
+ /* Set the address, index & direction (read from PHY) */
+ addr = (((pdata->phy_address) & 0x1F) << 11)
+ | ((index & 0x1F) << 6);
+ smsc911x_mac_write(pdata, MII_ACC, addr);
+
+ /* Wait for read to complete w/ timeout */
+ for (i = 0; i < 100; i++) {
+ /* See if MII is finished yet */
+ if ((smsc911x_mac_read(pdata, MII_ACC)
+ & MII_ACC_MII_BUSY_) == 0) {
+ result = smsc911x_mac_read(pdata, MII_DATA);
+ return result;
+ }
+ }
+ SMSC_WARNING("Timed out waiting for MII write to finish");
+
+ return result;
+}
+
+/* Sets a phy register, phy_lock must be acquired before calling */
+static void smsc911x_phy_write(struct smsc911x_data *pdata,
+ unsigned int index, unsigned int val)
+{
+ unsigned int addr;
+ int i;
+
+ /* Confirm MII not busy */
+ if (unlikely
+ ((smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_) != 0)) {
+ SMSC_WARNING("MII is busy in smsc911x_write_phy???");
+ return;
+ }
+
+ /* Put the data to write in the MAC */
+ smsc911x_mac_write(pdata, MII_DATA, val);
+
+ /* Set the address, index & direction (write to PHY) */
+ addr = (((pdata->phy_address) & 0x1F) << 11) |
+ ((index & 0x1F) << 6) | MII_ACC_MII_WRITE_;
+ smsc911x_mac_write(pdata, MII_ACC, addr);
+
+ /* Wait for write to complete w/ timeout */
+ for (i = 0; i < 100; i++) {
+ /* See if MII is finished yet */
+ if ((smsc911x_mac_read(pdata, MII_ACC)
+ & MII_ACC_MII_BUSY_) == 0)
+ return;
+ }
+ SMSC_WARNING("Timed out waiting for MII write to finish");
+}
+
+/* Autodetects and initialises external phy for SMSC9115 and SMSC9117 flavors.
+ * If something goes wrong, returns -ENODEV to revert back to internal phy.
+ * Performed at initialisation only, phy_lock already acquired. */
+static int smsc911x_phy_initialise_external(struct smsc911x_data *pdata)
+{
+ unsigned int address;
+ unsigned int hwcfg;
+ unsigned int phyid1;
+ unsigned int phyid2;
+
+ hwcfg = smsc911x_reg_read(pdata, HW_CFG);
+
+ /* External phy is requested, supported, and detected */
+ if (hwcfg & HW_CFG_EXT_PHY_DET_) {
+
+ /* Attempt to switch to external phy for auto-detecting
+ * its address. Assuming tx and rx are stopped because
+ * smsc911x_phy_initialise is called before
+ * smsc911x_rx_initialise and tx_initialise.
+ */
+
+ /* Disable phy clocks to the MAC */
+ hwcfg &= (~HW_CFG_PHY_CLK_SEL_);
+ hwcfg |= HW_CFG_PHY_CLK_SEL_CLK_DIS_;
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+ udelay(10); /* Enough time for clocks to stop */
+
+ /* Switch to external phy */
+ hwcfg |= HW_CFG_EXT_PHY_EN_;
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+
+ /* Enable phy clocks to the MAC */
+ hwcfg &= (~HW_CFG_PHY_CLK_SEL_);
+ hwcfg |= HW_CFG_PHY_CLK_SEL_EXT_PHY_;
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+ udelay(10); /* Enough time for clocks to restart */
+
+ hwcfg |= HW_CFG_SMI_SEL_;
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+
+ /* Auto-detect PHY */
+ for (address = 0; address <= 31; address++) {
+ pdata->phy_address = address;
+ phyid1 = smsc911x_phy_read(pdata, MII_PHYSID1);
+ phyid2 = smsc911x_phy_read(pdata, MII_PHYSID2);
+ if ((phyid1 != 0xFFFFU) || (phyid2 != 0xFFFFU)) {
+ SMSC_TRACE("Detected PHY at address = "
+ "0x%02X = %d", address, address);
+ break;
+ }
+ }
+
+ if ((phyid1 == 0xFFFFU) && (phyid2 == 0xFFFFU)) {
+ SMSC_WARNING("External PHY is not accessable, "
+ "using internal PHY instead");
+ /* Revert back to interal phy settings. */
+
+ /* Disable phy clocks to the MAC */
+ hwcfg &= (~HW_CFG_PHY_CLK_SEL_);
+ hwcfg |= HW_CFG_PHY_CLK_SEL_CLK_DIS_;
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+ udelay(10); /* Enough time for clocks to stop */
+
+ /* Switch to internal phy */
+ hwcfg &= (~HW_CFG_EXT_PHY_EN_);
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+
+ /* Enable phy clocks to the MAC */
+ hwcfg &= (~HW_CFG_PHY_CLK_SEL_);
+ hwcfg |= HW_CFG_PHY_CLK_SEL_INT_PHY_;
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+ udelay(10); /* Enough time for clocks to restart */
+
+ hwcfg &= (~HW_CFG_SMI_SEL_);
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+ /* Use internal phy */
+ return -ENODEV;
+ } else {
+ SMSC_TRACE("Successfully switched to external PHY");
+#ifdef USE_LED1_WORK_AROUND
+ pdata->not_using_extphy = 0;
+#endif
+ }
+ } else {
+ SMSC_WARNING("No external PHY detected.");
+ SMSC_WARNING("Using internal PHY instead.");
+ /* Use internal phy */
+ return -ENODEV;
+ }
+ return 0;
+}
+
+static int smsc911x_phy_reset(struct smsc911x_data *pdata)
+{
+ unsigned int temp;
+ unsigned int lcount = 100000;
+
+ SMSC_TRACE("Performing PHY BCR Reset");
+ smsc911x_phy_write(pdata, MII_BMCR, BMCR_RESET);
+ do {
+ udelay(10);
+ temp = smsc911x_phy_read(pdata, MII_BMCR);
+ lcount--;
+ } while ((lcount > 0) && (temp & BMCR_RESET));
+
+ if (temp & BMCR_RESET) {
+ SMSC_WARNING("PHY reset failed to complete.");
+ return 0;
+ }
+ /* Extra delay required because the phy may not be completed with
+ * its reset when BMCR_RESET is cleared. Specs say 256 uS is
+ * enough delay but using 500 here to be safe
+ */
+ udelay(500);
+
+ return 1;
+}
+
+/* Fetches a tx status out of the status fifo */
+static unsigned int smsc911x_tx_get_txstatus(struct smsc911x_data *pdata)
+{
+ unsigned int result =
+ smsc911x_reg_read(pdata, TX_FIFO_INF) & TX_FIFO_INF_TSUSED_;
+
+ if (result != 0)
+ result = smsc911x_reg_read(pdata, TX_STATUS_FIFO);
+
+ return result;
+}
+
+/* Fetches the next rx status */
+static unsigned int smsc911x_rx_get_rxstatus(struct smsc911x_data *pdata)
+{
+ unsigned int result =
+ smsc911x_reg_read(pdata, RX_FIFO_INF) & RX_FIFO_INF_RXSUSED_;
+
+ if (result != 0)
+ result = smsc911x_reg_read(pdata, RX_STATUS_FIFO);
+
+ return result;
+}
+
+#ifdef USE_PHY_WORK_AROUND
+static int smsc911x_phy_check_loopbackpkt(struct smsc911x_data *pdata)
+{
+ unsigned int tries = 0;
+ unsigned int lcount = 0;
+ u32 wrsz;
+ u32 rdsz;
+ u32 bufp;
+
+ for (tries = 0; tries < 10; tries++) {
+ unsigned int txcmd_a = 0;
+ unsigned int txcmd_b = 0;
+ unsigned int status = 0;
+ unsigned int pktlength = 0;
+
+ /* Zero-out rx packet memory */
+ memset(pdata->loopback_rx_pkt, 0, MIN_PACKET_SIZE);
+
+ /* Write tx packet to 118 */
+ txcmd_a = (((unsigned int)pdata->loopback_tx_pkt)
+ & 0x03) << 16;
+ txcmd_a |= TX_CMD_A_FIRST_SEG_ | TX_CMD_A_LAST_SEG_;
+ txcmd_a |= MIN_PACKET_SIZE;
+
+ txcmd_b = MIN_PACKET_SIZE << 16 | MIN_PACKET_SIZE;
+
+ smsc911x_reg_write(txcmd_a, pdata, TX_DATA_FIFO);
+ smsc911x_reg_write(txcmd_b, pdata, TX_DATA_FIFO);
+
+ bufp = ((u32) pdata->loopback_tx_pkt) & 0xFFFFFFFC;
+ wrsz = MIN_PACKET_SIZE + 3;
+ wrsz += (((u32) pdata->loopback_tx_pkt) & 0x3);
+ wrsz >>= 2;
+
+ smsc911x_tx_writefifo(pdata, (unsigned int *)bufp, wrsz);
+
+ /* Wait till transmit is done */
+ lcount = 60;
+ do {
+ udelay(5);
+ lcount--;
+ status = smsc911x_tx_get_txstatus(pdata);
+ } while ((lcount > 0) && (status == 0));
+
+ if (status == 0) {
+ SMSC_WARNING("Failed to transmit during "
+ "loopback test");
+ continue;
+ }
+ if (status & 0x00008000) {
+ SMSC_WARNING("Transmit encountered errors "
+ "during loopback test");
+ continue;
+ }
+
+ /* Wait till receive is done */
+ lcount = 60;
+ do {
+ udelay(5);
+ lcount--;
+ status = smsc911x_rx_get_rxstatus(pdata);
+ } while ((lcount > 0) && (status == 0));
+
+ if (status == 0) {
+ SMSC_WARNING("Failed to receive during "
+ "loopback test");
+ continue;
+ }
+ if (status & RX_STS_ES_) {
+ SMSC_WARNING("Receive encountered errors "
+ "during loopback test");
+ continue;
+ }
+
+ pktlength = ((status & 0x3FFF0000UL) >> 16);
+
+ bufp = (u32)pdata->loopback_rx_pkt;
+ rdsz = pktlength + 3;
+ rdsz += ((u32)pdata->loopback_rx_pkt) & 0x3;
+ rdsz >>= 2;
+
+ smsc911x_rx_readfifo(pdata, (unsigned int *)bufp, rdsz);
+
+ if (pktlength != (MIN_PACKET_SIZE + 4)) {
+ SMSC_WARNING("Unexpected packet size during "
+ "loop back test, size=%d, "
+ "will retry", pktlength);
+ } else {
+ unsigned int index = 0;
+ int mismatch = 0;
+ for (index = 0; index < MIN_PACKET_SIZE; index++) {
+ if (pdata->loopback_tx_pkt[index]
+ != pdata->loopback_rx_pkt[index]) {
+ mismatch = 1;
+ break;
+ }
+ }
+ if (!mismatch) {
+ SMSC_TRACE("Successfully verified "
+ "loopback packet");
+ return 1;
+ } else {
+ SMSC_WARNING("Data miss match during "
+ "loop back test, will retry.");
+ }
+ }
+ }
+
+ return 0;
+}
+
+static int smsc911x_phy_loopbacktest(struct smsc911x_data *pdata)
+{
+ int result = 0;
+ unsigned int index = 0;
+ unsigned int tries = 0;
+ unsigned int val;
+
+ /* Initialise tx packet */
+ for (index = 0; index < 6; index++) {
+ /* Use broadcast destination address */
+ pdata->loopback_tx_pkt[index] = (char)0xFF;
+ }
+
+ for (index = 6; index < 12; index++) {
+ /* Use incrementing source address */
+ pdata->loopback_tx_pkt[index] = (char)index;
+ }
+
+ /* Set length type field */
+ pdata->loopback_tx_pkt[12] = 0x00;
+ pdata->loopback_tx_pkt[13] = 0x00;
+ for (index = 14; index < MIN_PACKET_SIZE; index++) {
+ pdata->loopback_tx_pkt[index] = (char)index;
+ }
+
+ val = smsc911x_reg_read(pdata, HW_CFG);
+ val &= HW_CFG_TX_FIF_SZ_;
+ val |= HW_CFG_SF_;
+ smsc911x_reg_write(val, pdata, HW_CFG);
+
+ smsc911x_reg_write(TX_CFG_TX_ON_, pdata, TX_CFG);
+ smsc911x_reg_write((((unsigned int)pdata->loopback_rx_pkt)
+ & 0x03) << 8, pdata, RX_CFG);
+
+ for (tries = 0; tries < 10; tries++) {
+ /* Set PHY to 10/FD, no ANEG, and loopback mode */
+ smsc911x_phy_write(pdata, MII_BMCR, 0x4100);
+
+ /* Enable MAC tx/rx, FD */
+ smsc911x_mac_write(pdata, MAC_CR, MAC_CR_FDPX_
+ | MAC_CR_TXEN_ | MAC_CR_RXEN_);
+
+ if (smsc911x_phy_check_loopbackpkt(pdata)) {
+ result = 1;
+ break;
+ }
+ pdata->resetcount++;
+
+ /* Disable MAC rx */
+ smsc911x_mac_write(pdata, MAC_CR, 0);
+ smsc911x_phy_reset(pdata);
+ }
+
+ /* Disable MAC */
+ smsc911x_mac_write(pdata, MAC_CR, 0);
+
+ /* Cancel PHY loopback mode */
+ smsc911x_phy_write(pdata, MII_BMCR, 0);
+
+ smsc911x_reg_write(0, pdata, TX_CFG);
+ smsc911x_reg_write(0, pdata, RX_CFG);
+
+ return result;
+}
+#endif /* USE_PHY_WORK_AROUND */
+
+/* Gets the current link mode, assumes phy_lock has already been acquired */
+static void smsc911x_phy_getlinkmode(struct smsc911x_data *pdata)
+{
+ unsigned int result = LINK_OFF;
+ unsigned int phy_reg = 0;
+ unsigned int phy_bsr = 0;
+
+ phy_bsr = smsc911x_phy_read(pdata, MII_BMSR);
+
+ pdata->link_settings = LINK_OFF;
+ if (phy_bsr & BMSR_LSTATUS) {
+ phy_reg = smsc911x_phy_read(pdata, MII_BMCR);
+ if (phy_reg & BMCR_ANENABLE) {
+ unsigned int linksettings = LINK_AUTO_NEGOTIATE;
+ unsigned int phy_adv =
+ smsc911x_phy_read(pdata, MII_ADVERTISE);
+ unsigned int phy_lpa =
+ smsc911x_phy_read(pdata, MII_LPA);
+ if (phy_adv & ADVERTISE_PAUSE_ASYM)
+ linksettings |= LINK_ASYMMETRIC_PAUSE;
+ if (phy_adv & ADVERTISE_PAUSE_CAP)
+ linksettings |= LINK_SYMMETRIC_PAUSE;
+ if (phy_adv & ADVERTISE_100FULL)
+ linksettings |= LINK_SPEED_100FD;
+ if (phy_adv & ADVERTISE_100HALF)
+ linksettings |= LINK_SPEED_100HD;
+ if (phy_adv & ADVERTISE_10FULL)
+ linksettings |= LINK_SPEED_10FD;
+ if (phy_adv & ADVERTISE_10HALF)
+ linksettings |= LINK_SPEED_10HD;
+
+ pdata->link_settings = linksettings;
+ phy_lpa &= phy_adv;
+
+ if (phy_lpa & LPA_100FULL)
+ result = LINK_SPEED_100FD;
+ else if (phy_lpa & LPA_100HALF)
+ result = LINK_SPEED_100HD;
+ else if (phy_lpa & LPA_10FULL)
+ result = LINK_SPEED_10FD;
+ else if (phy_lpa & LPA_10HALF)
+ result = LINK_SPEED_10HD;
+ } else {
+ if (phy_reg & BMCR_SPEED100) {
+ if (phy_reg & BMCR_FULLDPLX) {
+ result = LINK_SPEED_100FD;
+ pdata->link_settings = result;
+ } else {
+ result = LINK_SPEED_100HD;
+ pdata->link_settings = result;
+ }
+ } else {
+ if (phy_reg & BMCR_FULLDPLX) {
+ result = LINK_SPEED_10FD;
+ pdata->link_settings = result;
+ } else {
+ result = LINK_SPEED_10HD;
+ pdata->link_settings = result;
+ }
+ }
+ }
+ }
+ pdata->link_speed = result;
+}
+
+static void smsc911x_phy_print_linkmode(unsigned int locallink,
+ unsigned int linkpartner)
+{
+ SMSC_TRACE("LAN911x: %s,%s,%s,%s,%s,%s",
+ (locallink & ADVERTISE_PAUSE_ASYM) ? "ASYMP" : " ",
+ (locallink & ADVERTISE_PAUSE_CAP) ? "SYMP " : " ",
+ (locallink & ADVERTISE_100FULL) ? "100FD" : " ",
+ (locallink & ADVERTISE_100HALF) ? "100HD" : " ",
+ (locallink & ADVERTISE_10FULL) ? "10FD " : " ",
+ (locallink & ADVERTISE_10HALF) ? "10HD " : " ");
+
+ SMSC_TRACE("Partner: %s,%s,%s,%s,%s,%s",
+ (linkpartner & LPA_PAUSE_ASYM) ? "ASYMP" : " ",
+ (linkpartner & LPA_PAUSE_CAP) ? "SYMP " : " ",
+ (linkpartner & LPA_100FULL) ? "100FD" : " ",
+ (linkpartner & LPA_100HALF) ? "100HD" : " ",
+ (linkpartner & LPA_10FULL) ? "10FD " : " ",
+ (linkpartner & LPA_10HALF) ? "10HD " : " ");
+}
+
+/* Update link mode if any thing has changed */
+static void smsc911x_phy_update_linkmode(struct net_device *dev)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ unsigned int old_link_speed = pdata->link_speed;
+ unsigned int temp;
+ unsigned long flags;
+
+ spin_lock_irqsave(&pdata->phy_lock, flags);
+ smsc911x_phy_getlinkmode(pdata);
+
+ if (old_link_speed != pdata->link_speed) {
+ if (pdata->link_speed != LINK_OFF) {
+ unsigned int phy_reg = 0;
+ switch (pdata->link_speed) {
+ case LINK_SPEED_10HD:
+ SMSC_TRACE("Link is now UP at 10Mbps HD");
+ break;
+ case LINK_SPEED_10FD:
+ SMSC_TRACE("Link is now UP at 10Mbps FD");
+ break;
+ case LINK_SPEED_100HD:
+ SMSC_TRACE("Link is now UP at 100Mbps HD");
+ break;
+ case LINK_SPEED_100FD:
+ SMSC_TRACE("Link is now UP at 100Mbps FD");
+ break;
+ default:
+ SMSC_WARNING("Link is now UP at unknown link "
+ "speed: 0x%08X",
+ pdata->link_speed);
+ break;
+ }
+ phy_reg = smsc911x_mac_read(pdata, MAC_CR);
+ phy_reg &= ~(MAC_CR_FDPX_ | MAC_CR_RCVOWN_);
+
+ switch (pdata->link_speed) {
+ case LINK_SPEED_10HD:
+ case LINK_SPEED_100HD:
+ phy_reg |= MAC_CR_RCVOWN_;
+ break;
+
+ case LINK_SPEED_10FD:
+ case LINK_SPEED_100FD:
+ phy_reg |= MAC_CR_FDPX_;
+ break;
+
+ default:
+ SMSC_WARNING("Unknown link speed: 0x%08X",
+ pdata->link_speed);
+ break;
+ }
+
+ smsc911x_mac_write(pdata, MAC_CR, phy_reg);
+
+ if (pdata->link_settings & LINK_AUTO_NEGOTIATE) {
+ unsigned int linkpartner = 0;
+ unsigned int locallink = 0;
+ locallink = smsc911x_phy_read(pdata, 4);
+ linkpartner = smsc911x_phy_read(pdata, 5);
+ switch (pdata->link_speed) {
+ case LINK_SPEED_10FD:
+ case LINK_SPEED_100FD:
+ if (((locallink & linkpartner) &
+ LPA_PAUSE_CAP) != 0) {
+ /* Enable PAUSE receive and transmit */
+ smsc911x_mac_write(pdata, FLOW,
+ 0xFFFF0002);
+ temp =
+ smsc911x_reg_read(pdata,
+ AFC_CFG);
+ temp |= 0xF;
+ smsc911x_reg_write(temp, pdata,
+ AFC_CFG);
+ } else if (((locallink &
+ (ADVERTISE_PAUSE_CAP |
+ ADVERTISE_PAUSE_ASYM)) ==
+ (ADVERTISE_PAUSE_CAP |
+ ADVERTISE_PAUSE_ASYM)) &&
+ ((linkpartner &
+ (LPA_PAUSE_CAP |
+ LPA_PAUSE_ASYM)) ==
+ LPA_PAUSE_ASYM)) {
+ /* Enable PAUSE receive, disable PAUSE transmit */
+ smsc911x_mac_write(pdata, FLOW,
+ 0xFFFF0002);
+ temp =
+ smsc911x_reg_read(pdata,
+ AFC_CFG);
+ temp &= ~0xF;
+ smsc911x_reg_write(temp, pdata,
+ AFC_CFG);
+ } else {
+ /* Disable PAUSE receive and transmit */
+ smsc911x_mac_write(pdata, FLOW,
+ 0);
+ temp =
+ smsc911x_reg_read(pdata,
+ AFC_CFG);
+ temp &= ~0xF;
+ smsc911x_reg_write(temp, pdata,
+ AFC_CFG);
+ }
+ break;
+
+ case LINK_SPEED_10HD:
+ case LINK_SPEED_100HD:
+ smsc911x_mac_write(pdata, FLOW, 0);
+ temp =
+ smsc911x_reg_read(pdata, AFC_CFG);
+ temp |= 0xF;
+ smsc911x_reg_write(temp, pdata,
+ AFC_CFG);
+ break;
+
+ default:
+ SMSC_WARNING("Unknown link speed: "
+ "0x%08X\n",
+ pdata->link_speed);
+ break;
+ }
+ smsc911x_phy_print_linkmode(locallink,
+ linkpartner);
+ } else {
+ switch (pdata->link_speed) {
+ case LINK_SPEED_10HD:
+ case LINK_SPEED_100HD:
+ smsc911x_mac_write(pdata, FLOW, 0);
+ smsc911x_reg_write(0x0000000F,
+ pdata, AFC_CFG);
+ break;
+ default:
+ smsc911x_mac_write(pdata, FLOW, 0);
+ temp =
+ smsc911x_reg_read(pdata, AFC_CFG);
+ temp &= ~0xF;
+ smsc911x_reg_write(temp, pdata,
+ AFC_CFG);
+ break;
+ }
+ }
+ netif_carrier_on(dev);
+#ifdef USE_LED1_WORK_AROUND
+ if ((pdata->gpio_orig_setting & GPIO_CFG_LED1_EN_) &&
+ pdata->not_using_extphy) {
+ /* Restore orginal GPIO configuration */
+ pdata->gpio_setting = pdata->gpio_orig_setting;
+ smsc911x_reg_write(pdata->gpio_setting, pdata,
+ GPIO_CFG);
+ }
+#endif /* USE_LED1_WORK_AROUND */
+ } else {
+ SMSC_TRACE("Link is now down");
+ netif_carrier_off(dev);
+ smsc911x_mac_write(pdata, FLOW, 0);
+
+ temp = smsc911x_reg_read(pdata, AFC_CFG);
+ temp &= ~0xF;
+ smsc911x_reg_write(temp, pdata, AFC_CFG);
+
+#ifdef USE_LED1_WORK_AROUND
+ /* Check global setting that LED1
+ * usage is 10/100 indicator */
+ pdata->gpio_setting =
+ smsc911x_reg_read(pdata, GPIO_CFG);
+ if ((pdata->gpio_setting & GPIO_CFG_LED1_EN_)
+ && pdata->not_using_extphy) {
+ /* Force 10/100 LED off, after saving
+ * orginal GPIO configuration */
+ pdata->gpio_orig_setting = pdata->gpio_setting;
+
+ pdata->gpio_setting &= ~GPIO_CFG_LED1_EN_;
+ pdata->gpio_setting |= (GPIO_CFG_GPIOBUF0_
+ | GPIO_CFG_GPIODIR0_
+ | GPIO_CFG_GPIOD0_);
+ smsc911x_reg_write(pdata->gpio_setting, pdata,
+ GPIO_CFG);
+ }
+#endif /* USE_LED1_WORK_AROUND */
+ }
+ }
+ spin_unlock_irqrestore(&pdata->phy_lock, flags);
+}
+
+/* Entry point for the link poller */
+static void smsc911x_phy_checklink(unsigned long ptr)
+{
+ struct net_device *dev = (struct net_device *)ptr;
+ struct smsc911x_data *pdata = netdev_priv(dev);
+
+ /* Must call this twice */
+ smsc911x_phy_update_linkmode(dev);
+ smsc911x_phy_update_linkmode(dev);
+
+ if (!(pdata->stop_link_poll)) {
+ pdata->link_poll_timer.expires = jiffies + HZ;
+ add_timer(&(pdata->link_poll_timer));
+ }
+}
+
+/* Initialises the PHY layer. Called at initialisation, phy_lock already
+ * acquired. */
+static int smsc911x_phy_initialise(struct net_device *dev)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ unsigned int phyid1 = 0;
+ unsigned int phyid2 = 0;
+ unsigned int temp;
+
+ switch (pdata->idrev & 0xFFFF0000) {
+ case 0x01170000:
+ case 0x01150000:
+ /* External PHY supported, try to autodetect */
+ if (smsc911x_phy_initialise_external(pdata) < 0) {
+ SMSC_TRACE("External PHY is not detected, using "
+ "internal PHY instead");
+ pdata->phy_address = 1;
+ }
+ break;
+ default:
+ SMSC_TRACE("External PHY is not supported, using internal PHY "
+ "instead");
+ pdata->phy_address = 1;
+ break;
+ }
+
+#ifdef USE_LED1_WORK_AROUND
+ pdata->not_using_extphy = 1;
+#endif
+
+ phyid1 = smsc911x_phy_read(pdata, MII_PHYSID1);
+ phyid2 = smsc911x_phy_read(pdata, MII_PHYSID2);
+
+ if ((phyid1 == 0xFFFF) && (phyid2 == 0xFFFF)) {
+ SMSC_WARNING("Internal PHY not detected!");
+ return 0;
+ }
+
+ pdata->link_speed = LINK_OFF;
+ pdata->link_settings = LINK_OFF;
+
+ /* Reset the phy */
+ if (!smsc911x_phy_reset(pdata)) {
+ SMSC_WARNING("PHY reset failed to complete.");
+ return 0;
+ }
+#ifdef USE_PHY_WORK_AROUND
+ if (!smsc911x_phy_loopbacktest(pdata)) {
+ SMSC_WARNING("Failed Loop Back Test");
+ return 0;
+ } else {
+ SMSC_TRACE("Passed Loop Back Test");
+ }
+#endif /* USE_PHY_WORK_AROUND */
+
+ /* Advertise all speeds and pause capabilities */
+ temp = smsc911x_phy_read(pdata, MII_ADVERTISE);
+ temp |= (ADVERTISE_ALL | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
+ smsc911x_phy_write(pdata, MII_ADVERTISE, temp);
+
+ /* begin to establish link */
+ smsc911x_phy_write(pdata, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
+
+ init_timer(&pdata->link_poll_timer);
+ pdata->link_poll_timer.function = smsc911x_phy_checklink;
+ pdata->link_poll_timer.data = (unsigned long)dev;
+ pdata->link_poll_timer.expires = jiffies + HZ;
+ add_timer(&pdata->link_poll_timer);
+
+ SMSC_TRACE("phy initialised succesfully");
+ return 1;
+}
+
+/* Gets the number of tx statuses in the fifo */
+static unsigned int smsc911x_tx_get_txstatcount(struct smsc911x_data *pdata)
+{
+ unsigned int result = (smsc911x_reg_read(pdata, TX_FIFO_INF)
+ & TX_FIFO_INF_TSUSED_) >> 16;
+ return result;
+}
+
+/* Reads tx statuses and increments counters where necessary */
+static void smsc911x_tx_update_txcounters(struct smsc911x_data *pdata)
+{
+ unsigned int tx_stat;
+
+ while ((tx_stat = smsc911x_tx_get_txstatus(pdata)) != 0) {
+ if (unlikely(tx_stat & 0x80000000)) {
+ /* In this driver the packet tag is used as the packet length.
+ * Since a packet length can never reach the size of 0x8000,
+ * this bit is reserved so that if packet tracking tags were
+ * ever used, then those tracking tags would set the reserved bit.
+ * Accordingly, this control path would be used to look up the
+ * packet and perhaps free it. It is worth noting that the
+ * "reserved bit" in the warning above does not reference a
+ * hardware defined reserved bit but rather a driver defined one.
+ */
+ SMSC_WARNING("Packet tag reserved bit is high");
+ } else {
+ if (unlikely(tx_stat & 0x00008000)) {
+ pdata->stats.tx_errors++;
+ } else {
+ pdata->stats.tx_packets++;
+ pdata->stats.tx_bytes += (tx_stat >> 16);
+ }
+ if (unlikely(tx_stat & 0x00000100)) {
+ pdata->stats.collisions += 16;
+ pdata->stats.tx_aborted_errors += 1;
+ } else {
+ pdata->stats.collisions +=
+ ((tx_stat >> 3) & 0xF);
+ }
+ if (unlikely(tx_stat & 0x00000800)) {
+ pdata->stats.tx_carrier_errors += 1;
+ }
+ if (unlikely(tx_stat & 0x00000200)) {
+ pdata->stats.collisions++;
+ pdata->stats.tx_aborted_errors++;
+ }
+ }
+ }
+}
+
+/* Increments the Rx error counters */
+static void
+smsc911x_rx_counterrors(struct smsc911x_data *pdata, unsigned int rxstat)
+{
+ int crc_err;
+
+ crc_err = 0;
+ if (unlikely(rxstat & 0x00008000)) {
+ pdata->stats.rx_errors++;
+ if (unlikely(rxstat & 0x00000002)) {
+ pdata->stats.rx_crc_errors++;
+ crc_err = 1;
+ }
+ }
+ if (likely(!crc_err)) {
+ if (unlikely((rxstat & 0x00001020) == 0x00001020)) {
+ /* Frame type indicates length,
+ * and length error is set */
+ pdata->stats.rx_length_errors++;
+ }
+ if (rxstat & RX_STS_MCAST_)
+ pdata->stats.multicast++;
+ }
+}
+
+/* Quickly dumps bad packets */
+static void
+smsc911x_rx_fastforward(struct smsc911x_data *pdata, unsigned int count)
+{
+ if (likely(count >= 4)) {
+ unsigned int timeout = 500;
+ smsc911x_reg_write(RX_DP_CTRL_RX_FFWD_, pdata, RX_DP_CTRL);
+ while (timeout && (smsc911x_reg_read(pdata, RX_DP_CTRL)
+ & RX_DP_CTRL_RX_FFWD_)) {
+ udelay(1);
+ timeout--;
+ }
+ if (unlikely(timeout == 0)) {
+ SMSC_WARNING("Timed out waiting for RX FFWD "
+ "to finish, RX_DP_CTRL: 0x%08X",
+ smsc911x_reg_read(pdata, RX_DP_CTRL));
+ }
+ } else {
+ while (count) {
+ volatile unsigned int temp;
+ temp = smsc911x_reg_read(pdata, RX_DATA_FIFO);
+ count--;
+ }
+ }
+}
+
+/* NAPI poll function */
+static int smsc911x_poll(struct net_device *dev, int *budget)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ int npackets = 0;
+ int quota = min(dev->quota, *budget);
+
+ while (npackets < quota) {
+ unsigned int pktlength;
+ unsigned int rxstat;
+ rxstat = smsc911x_rx_get_rxstatus(pdata);
+
+ /* break out of while loop if there are no more packets waiting */
+ if (rxstat == 0)
+ break;
+
+ pktlength = ((rxstat & 0x3FFF0000) >> 16);
+ smsc911x_rx_counterrors(pdata, rxstat);
+
+ if (likely((rxstat & RX_STS_ES_) == 0)) {
+ struct sk_buff *skb = NULL;
+ skb = dev_alloc_skb(pktlength + 2);
+ if (likely(skb)) {
+ skb->data = skb->head;
+ skb->tail = skb->head;
+ /* Align IP on 16B boundary */
+ skb_reserve(skb, 2);
+ skb_put(skb, pktlength - 4);
+ smsc911x_rx_readfifo(pdata,
+ (unsigned int *)skb->head,
+ (pktlength + 2 + 3) >> 2);
+ skb->dev = dev;
+ skb->protocol = eth_type_trans(skb, dev);
+ skb->ip_summed = CHECKSUM_NONE;
+ netif_receive_skb(skb);
+
+ /* Update counters */
+ pdata->stats.rx_packets++;
+ pdata->stats.rx_bytes += (pktlength - 4);
+ dev->last_rx = jiffies;
+ npackets++;
+ continue;
+ } else {
+ SMSC_WARNING("Unable to allocate sk_buff "
+ "for rx packet, in PIO path");
+ pdata->stats.rx_dropped++;
+ }
+ }
+ /* At this point, the packet is to be read out
+ * of the fifo and discarded */
+ pktlength += 2 + 3;
+ pktlength >>= 2;
+ smsc911x_rx_fastforward(pdata, pktlength);
+ }
+
+ pdata->stats.rx_dropped += smsc911x_reg_read(pdata, RX_DROP);
+ smsc911x_reg_write(INT_STS_RSFL_, pdata, INT_STS);
+
+ *budget -= npackets;
+ dev->quota -= npackets;
+
+ if (npackets < quota) {
+ unsigned int temp;
+ /* We processed all packets available. Tell NAPI it can
+ * stop polling then re-enable rx interrupts */
+ netif_rx_complete(dev);
+ temp = smsc911x_reg_read(pdata, INT_EN);
+ temp |= INT_EN_RSFL_EN_;
+ smsc911x_reg_write(temp, pdata, INT_EN);
+ return 0;
+ }
+
+ /* There are still packets waiting */
+ return 1;
+}
+
+/* Returns hash bit number for given MAC address
+ * Example:
+ * 01 00 5E 00 00 01 -> returns bit number 31 */
+static unsigned int smsc911x_hash(char addr[ETH_ALEN])
+{
+ unsigned int crc;
+ unsigned int result;
+
+ crc = ether_crc(ETH_ALEN, addr);
+ result = (crc >> 26) & 0x3f;
+
+ return result;
+}
+
+static void smsc911x_rx_multicast_update(struct smsc911x_data *pdata)
+{
+ /* Performs the multicast & mac_cr update. This is called when
+ * safe on the current hardware */
+ unsigned int mac_cr = smsc911x_mac_read(pdata, MAC_CR);
+ mac_cr |= pdata->set_bits_mask;
+ mac_cr &= ~(pdata->clear_bits_mask);
+ smsc911x_mac_write(pdata, MAC_CR, mac_cr);
+ smsc911x_mac_write(pdata, HASHH, pdata->hashhi);
+ smsc911x_mac_write(pdata, HASHL, pdata->hashlo);
+ SMSC_TRACE("maccr 0x%08X, HASHH 0x%08X, HASHL 0x%08X", mac_cr,
+ pdata->hashhi, pdata->hashlo);
+}
+
+static void smsc911x_rx_multicast_update_workaround(struct smsc911x_data *pdata)
+{
+ unsigned int mac_cr;
+ unsigned long flags;
+
+ /* This function is only called for older LAN911x devices
+ * (revA or revB), where MAC_CR, HASHH and HASHL should not
+ * be modified during Rx - newer devices immediately update the
+ * registers. */
+
+ spin_lock_irqsave(&pdata->phy_lock, flags);
+
+ /* Check Rx has stopped */
+ if (smsc911x_mac_read(pdata, MAC_CR) & MAC_CR_RXEN_)
+ SMSC_WARNING("Rx not stopped\n");
+
+ /* Perform the update - safe to do now Rx has stopped */
+ smsc911x_rx_multicast_update(pdata);
+
+ /* Re-enable Rx */
+ mac_cr = smsc911x_mac_read(pdata, MAC_CR);
+ mac_cr |= MAC_CR_RXEN_;
+ smsc911x_mac_write(pdata, MAC_CR, mac_cr);
+
+ pdata->multicast_update_pending = 0;
+
+ spin_unlock_irqrestore(&pdata->phy_lock, flags);
+}
+
+static int smsc911x_open(struct net_device *dev)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ unsigned int mac_high16;
+ unsigned int mac_low32;
+ unsigned int timeout;
+ unsigned int temp;
+ unsigned long flags;
+
+ spin_lock_init(&pdata->phy_lock);
+
+ /* Reset the LAN911x */
+ smsc911x_reg_write(HW_CFG_SRST_, pdata, HW_CFG);
+ timeout = 10;
+ do {
+ udelay(10);
+ temp = smsc911x_reg_read(pdata, HW_CFG);
+ } while ((--timeout) && (temp & HW_CFG_SRST_));
+
+ if (unlikely(temp & HW_CFG_SRST_)) {
+ SMSC_WARNING("Failed to complete reset");
+ return -ENODEV;
+ }
+
+ smsc911x_reg_write(0x00050000, pdata, HW_CFG);
+ smsc911x_reg_write(0x006E3740, pdata, AFC_CFG);
+
+ /* Make sure EEPROM has finished loading before setting GPIO_CFG */
+ timeout = 50;
+ while ((timeout--) &&
+ (smsc911x_reg_read(pdata, E2P_CMD) & E2P_CMD_EPC_BUSY_)) {
+ udelay(10);
+ }
+
+ if (unlikely(timeout == 0)) {
+ SMSC_WARNING("Timed out waiting for EEPROM "
+ "busy bit to clear\n");
+ }
+#if USE_DEBUG >= 1
+ smsc911x_reg_write(0x00670700, pdata, GPIO_CFG);
+#else
+ smsc911x_reg_write(0x70070000, pdata, GPIO_CFG);
+#endif
+
+ /* Initialise irqs, but leave all sources disabled */
+ smsc911x_reg_write(0, pdata, INT_EN);
+ smsc911x_reg_write(0xFFFFFFFF, pdata, INT_STS);
+ /* Set interrupt deassertion to 100uS */
+ smsc911x_reg_write(((10 << 24) | INT_CFG_IRQ_EN_), pdata, INT_CFG);
+
+ /*
+ * intcfg |= INT_CFG_IRQ_POL_; use this to set IRQ_POL bit
+ * intcfg |= INT_CFG_IRQ_TYPE_; use this to set IRQ_TYPE bit
+ */
+
+ SMSC_TRACE("Testing irq handler using IRQ %d", dev->irq);
+ pdata->request_irq_disable = 0;
+ pdata->software_irq_signal = 0;
+ temp = smsc911x_reg_read(pdata, INT_EN);
+ temp |= INT_EN_SW_INT_EN_;
+ smsc911x_reg_write(temp, pdata, INT_EN);
+ timeout = 1000;
+ do {
+ udelay(10);
+ } while ((--timeout) && (!pdata->software_irq_signal));
+
+ if (!pdata->software_irq_signal) {
+ printk(KERN_WARNING "%s: ISR failed signaling test (IRQ %d)\n",
+ dev->name, dev->irq);
+ return -ENODEV;
+ }
+ SMSC_TRACE("IRQ handler passed test using IRQ %d", dev->irq);
+
+ printk(KERN_INFO "%s: SMSC911x/921x identified at %#08lx, IRQ: %d\n",
+ dev->name, (unsigned long)pdata->ioaddr, dev->irq);
+
+ spin_lock_irqsave(&pdata->phy_lock, flags);
+
+ /* Read mac address from EEPROM */
+ mac_high16 = smsc911x_mac_read(pdata, ADDRH);
+ mac_low32 = smsc911x_mac_read(pdata, ADDRL);
+
+ /* Generate random MAC address if eeprom values are invalid */
+ if ((mac_high16 == 0x0000FFFF) && (mac_low32 == 0xFFFFFFFF)) {
+ u8 random_mac[6];
+ random_ether_addr(random_mac);
+ mac_high16 = (random_mac[5] << 8) | random_mac[4];
+ mac_low32 = (random_mac[3] << 24) | (random_mac[2] << 16) |
+ (random_mac[1] << 8) | random_mac[0];
+
+ smsc911x_mac_write(pdata, ADDRH, mac_high16);
+ smsc911x_mac_write(pdata, ADDRL, mac_low32);
+ SMSC_TRACE("MAC Address is set to random_ether_addr");
+ } else {
+ SMSC_TRACE("Mac Address is read from LAN911x EEPROM");
+ }
+
+ dev->dev_addr[0] = (u8)(mac_low32);
+ dev->dev_addr[1] = (u8)(mac_low32 >> 8);
+ dev->dev_addr[2] = (u8)(mac_low32 >> 16);
+ dev->dev_addr[3] = (u8)(mac_low32 >> 24);
+ dev->dev_addr[4] = (u8)(mac_high16);
+ dev->dev_addr[5] = (u8)(mac_high16 >> 8);
+ printk(KERN_INFO
+ "%s: SMSC911x MAC Address: %02x:%02x:%02x:%02x:%02x:%02x\n",
+ dev->name, dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
+ dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
+
+ netif_carrier_off(dev);
+ if (!smsc911x_phy_initialise(dev)) {
+ SMSC_WARNING("Failed to initialize PHY");
+ return -ENODEV;
+ }
+
+ temp = smsc911x_reg_read(pdata, HW_CFG);
+ temp &= HW_CFG_TX_FIF_SZ_;
+ temp |= HW_CFG_SF_;
+ smsc911x_reg_write(temp, pdata, HW_CFG);
+
+ temp = smsc911x_reg_read(pdata, FIFO_INT);
+ temp |= FIFO_INT_TX_AVAIL_LEVEL_;
+ temp &= ~(FIFO_INT_RX_STS_LEVEL_);
+ smsc911x_reg_write(temp, pdata, FIFO_INT);
+
+ /* set RX Data offset to 2 bytes for alignment */
+ smsc911x_reg_write((2 << 8), pdata, RX_CFG);
+
+ temp = smsc911x_reg_read(pdata, INT_EN);
+ temp |= (INT_EN_TDFA_EN_ | INT_EN_RSFL_EN_);
+ smsc911x_reg_write(temp, pdata, INT_EN);
+
+ temp = smsc911x_mac_read(pdata, MAC_CR);
+ temp |= (MAC_CR_TXEN_ | MAC_CR_RXEN_ | MAC_CR_HBDIS_);
+ smsc911x_mac_write(pdata, MAC_CR, temp);
+
+ smsc911x_reg_write(TX_CFG_TX_ON_, pdata, TX_CFG);
+
+ spin_unlock_irqrestore(&pdata->phy_lock, flags);
+ netif_start_queue(dev);
+ return 0;
+}
+
+/* Entry point for stopping the interface */
+static int smsc911x_stop(struct net_device *dev)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+
+ pdata->stop_link_poll = 1;
+ del_timer_sync(&pdata->link_poll_timer);
+
+ smsc911x_reg_write((smsc911x_reg_read(pdata, INT_CFG) &
+ (~INT_CFG_IRQ_EN_)), pdata, INT_CFG);
+ netif_stop_queue(dev);
+
+ /* At this point all Rx and Tx activity is stopped */
+ pdata->stats.rx_dropped += smsc911x_reg_read(pdata, RX_DROP);
+ smsc911x_tx_update_txcounters(pdata);
+
+ SMSC_TRACE("<--Simp911x_stop");
+ return 0;
+}
+
+/* Entry point for transmitting a packet */
+static int smsc911x_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ unsigned int freespace;
+ unsigned int tx_cmd_a;
+ unsigned int tx_cmd_b;
+ unsigned int temp;
+ u32 wrsz;
+ u32 bufp;
+
+ freespace = smsc911x_reg_read(pdata, TX_FIFO_INF) & TX_FIFO_INF_TDFREE_;
+
+ if (unlikely(freespace < TX_FIFO_LOW_THRESHOLD))
+ SMSC_WARNING("Tx data fifo low, space available: %d",
+ freespace);
+
+ /* Word alignment adjustment */
+ tx_cmd_a = ((((unsigned int)(skb->data)) & 0x03) << 16);
+ tx_cmd_a |= TX_CMD_A_FIRST_SEG_ | TX_CMD_A_LAST_SEG_;
+ tx_cmd_a |= (unsigned int)skb->len;
+
+ tx_cmd_b = ((unsigned int)skb->len) << 16;
+ tx_cmd_b |= (unsigned int)skb->len;
+
+ smsc911x_reg_write(tx_cmd_a, pdata, TX_DATA_FIFO);
+ smsc911x_reg_write(tx_cmd_b, pdata, TX_DATA_FIFO);
+
+ bufp = ((u32)skb->data) & 0xFFFFFFFC;
+ wrsz = (u32)skb->len + 3;
+ wrsz += ((u32)skb->data) & 0x3;
+ wrsz >>= 2;
+
+ smsc911x_tx_writefifo(pdata, (unsigned int *)bufp, wrsz);
+ dev_kfree_skb(skb);
+ freespace -= (skb->len + 32);
+ dev->trans_start = jiffies;
+
+ if (unlikely(smsc911x_tx_get_txstatcount(pdata) >= 30))
+ smsc911x_tx_update_txcounters(pdata);
+
+ if (freespace < TX_FIFO_LOW_THRESHOLD) {
+ netif_stop_queue(dev);
+ temp = smsc911x_reg_read(pdata, FIFO_INT);
+ temp &= 0x00FFFFFF;
+ temp |= 0x32000000;
+ smsc911x_reg_write(temp, pdata, FIFO_INT);
+ }
+
+ return NETDEV_TX_OK;
+}
+
+/* Entry point for getting status counters */
+static struct net_device_stats *smsc911x_get_stats(struct net_device *dev)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ return &pdata->stats;
+}
+
+/* Entry point for setting addressing modes */
+static void smsc911x_set_multicast_list(struct net_device *dev)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ unsigned long flags;
+
+ spin_lock_irqsave(&pdata->phy_lock, flags);
+
+ if (dev->flags & IFF_PROMISC) {
+ /* Enabling promiscuous mode */
+ pdata->set_bits_mask = MAC_CR_PRMS_;
+ pdata->clear_bits_mask = (MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
+ pdata->hashhi = 0;
+ pdata->hashlo = 0;
+ } else if (dev->flags & IFF_ALLMULTI) {
+ /* Enabling all multicast mode */
+ pdata->set_bits_mask = MAC_CR_MCPAS_;
+ pdata->clear_bits_mask = (MAC_CR_PRMS_ | MAC_CR_HPFILT_);
+ pdata->hashhi = 0;
+ pdata->hashlo = 0;
+ } else if (dev->mc_count > 0) {
+ /* Enabling specific multicast addresses */
+ unsigned int hash_high = 0;
+ unsigned int hash_low = 0;
+ unsigned int count = 0;
+ struct dev_mc_list *mc_list = dev->mc_list;
+
+ pdata->set_bits_mask = MAC_CR_HPFILT_;
+ pdata->clear_bits_mask = (MAC_CR_PRMS_ | MAC_CR_MCPAS_);
+
+ while (mc_list) {
+ count++;
+ if ((mc_list->dmi_addrlen) == ETH_ALEN) {
+ unsigned int bitnum =
+ smsc911x_hash(mc_list->dmi_addr);
+ unsigned int mask = 0x01 << (bitnum & 0x1F);
+ if (bitnum & 0x20)
+ hash_high |= mask;
+ else
+ hash_low |= mask;
+ } else {
+ SMSC_WARNING("dmi_addrlen != 6");
+ }
+ mc_list = mc_list->next;
+ }
+ if (count != (unsigned int)dev->mc_count)
+ SMSC_WARNING("mc_count != dev->mc_count");
+
+ pdata->hashhi = hash_high;
+ pdata->hashlo = hash_low;
+ } else {
+ /* Enabling local MAC address only */
+ pdata->set_bits_mask = 0;
+ pdata->clear_bits_mask =
+ (MAC_CR_PRMS_ | MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
+ pdata->hashhi = 0;
+ pdata->hashlo = 0;
+ }
+
+ if (pdata->generation <= 1) {
+ /* Older hardware revision - cannot change these flags while
+ * receiving data */
+ if (pdata->multicast_update_pending == 0) {
+ unsigned int temp;
+ SMSC_TRACE("scheduling mcast update");
+ pdata->multicast_update_pending = 1;
+
+ /* Request the hardware to stop, then perform the
+ * update when we get an RX_STOP interrupt */
+ smsc911x_reg_write(INT_STS_RXSTOP_INT_, pdata, INT_STS);
+ temp = smsc911x_reg_read(pdata, INT_EN);
+ temp |= INT_EN_RXSTOP_INT_EN_;
+ smsc911x_reg_write(temp, pdata, INT_EN);
+
+ temp = smsc911x_mac_read(pdata, MAC_CR);
+ temp &= ~(MAC_CR_RXEN_);
+ smsc911x_mac_write(pdata, MAC_CR, temp);
+ } else {
+ /* There is another update pending, this should now
+ * use the newer values */
+ }
+ } else {
+ /* Newer hardware revision - can write immediately */
+ smsc911x_rx_multicast_update(pdata);
+ }
+
+ spin_unlock_irqrestore(&pdata->phy_lock, flags);
+}
+
+static irqreturn_t
+smsc911x_irqhandler(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct net_device *dev = dev_id;
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ unsigned int intsts;
+ unsigned int inten;
+ unsigned int temp;
+ int serviced = IRQ_NONE;
+
+ intsts = smsc911x_reg_read(pdata, INT_STS);
+ inten = smsc911x_reg_read(pdata, INT_EN);
+
+ if (unlikely(intsts & inten & INT_STS_SW_INT_)) {
+ temp = smsc911x_reg_read(pdata, INT_EN);
+ temp &= (~INT_EN_SW_INT_EN_);
+ smsc911x_reg_write(temp, pdata, INT_EN);
+ smsc911x_reg_write(INT_STS_SW_INT_, pdata, INT_STS);
+ pdata->software_irq_signal = 1;
+ serviced = IRQ_HANDLED;
+ if (pdata->request_irq_disable) {
+ temp = smsc911x_reg_read(pdata, INT_CFG);
+ temp &= (~INT_CFG_IRQ_EN_);
+ smsc911x_reg_write(temp, pdata, INT_CFG);
+ /* Prevent irqs from being handled */
+ intsts = 0;
+ }
+ }
+
+ if (unlikely(intsts & inten & INT_STS_RXSTOP_INT_)) {
+ /* Called when there is a multicast update scheduled and
+ * it is now safe to complete the update */
+ SMSC_TRACE("RX Stop interrupt");
+ temp = smsc911x_reg_read(pdata, INT_EN);
+ temp &= (~INT_EN_RXSTOP_INT_EN_);
+ smsc911x_reg_write(temp, pdata, INT_EN);
+ smsc911x_reg_write(INT_STS_RXSTOP_INT_, pdata, INT_STS);
+ smsc911x_rx_multicast_update_workaround(pdata);
+ serviced = IRQ_HANDLED;
+ }
+
+ if (intsts & inten & INT_STS_TDFA_) {
+ temp = smsc911x_reg_read(pdata, FIFO_INT);
+ temp |= FIFO_INT_TX_AVAIL_LEVEL_;
+ smsc911x_reg_write(temp, pdata, FIFO_INT);
+ smsc911x_reg_write(INT_STS_TDFA_, pdata, INT_STS);
+ netif_wake_queue(dev);
+ serviced = IRQ_HANDLED;
+ }
+
+ if (unlikely(intsts & inten & INT_STS_RXE_)) {
+ smsc911x_reg_write(INT_STS_RXE_, pdata, INT_STS);
+ serviced = IRQ_HANDLED;
+ }
+
+ if (likely(intsts & inten & INT_STS_RSFL_)) {
+ /* Disable Rx interrupts and schedule NAPI poll */
+ temp = smsc911x_reg_read(pdata, INT_EN);
+ temp &= (~INT_EN_RSFL_EN_);
+ smsc911x_reg_write(temp, pdata, INT_EN);
+ netif_rx_schedule(dev);
+ serviced = IRQ_HANDLED;
+ }
+
+ return serviced;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+void smsc911x_poll_controller(struct net_device *dev)
+{
+ disable_irq(dev->irq);
+ smsc911x_irqhandler(0, (void *)dev, NULL);
+ enable_irq(dev->irq);
+}
+#endif /* CONFIG_NET_POLL_CONTROLLER */
+
+/* Standard ioctls for mii-tool */
+int smsc911x_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ struct mii_ioctl_data *const data =
+ (struct mii_ioctl_data *)&ifr->ifr_data;
+ unsigned long flags;
+
+ SMSC_TRACE("ioctl cmd 0x%x", cmd);
+ switch (cmd) {
+ case SIOCGMIIPHY:
+ case SIOCDEVPRIVATE:
+ data->phy_id = pdata->phy_address;
+ return 0;
+ case SIOCGMIIREG:
+ case SIOCDEVPRIVATE + 1:
+ spin_lock_irqsave(&pdata->phy_lock, flags);
+ data->val_out = smsc911x_phy_read(pdata, data->reg_num);
+ spin_unlock_irqrestore(&pdata->phy_lock, flags);
+ return 0;
+ case SIOCSMIIREG:
+ case SIOCDEVPRIVATE + 2:
+ spin_lock_irqsave(&pdata->phy_lock, flags);
+ smsc911x_phy_write(pdata, data->reg_num, data->val_in);
+ spin_unlock_irqrestore(&pdata->phy_lock, flags);
+ return 0;
+ }
+
+ SMSC_TRACE("unsupported ioctl cmd");
+ return -1;
+}
+
+/* Initializing private device structures */
+static int smsc911x_init(struct net_device *dev)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+
+ SMSC_TRACE("Driver Parameters:");
+ SMSC_TRACE("LAN base: 0x%08lX", (unsigned long)pdata->ioaddr);
+ SMSC_TRACE("IRQ: %d", dev->irq);
+ SMSC_TRACE("PHY will be autodetected.");
+
+ if (pdata->ioaddr == 0) {
+ SMSC_WARNING("pdata->ioaddr: 0x00000000");
+ return -ENODEV;
+ }
+
+ /* Default generation to zero (all workarounds apply) */
+ pdata->generation = 0;
+
+ pdata->idrev = smsc911x_reg_read(pdata, ID_REV);
+ if (((pdata->idrev >> 16) & 0xFFFF) == (pdata->idrev & 0xFFFF)) {
+ SMSC_WARNING("idrev top 16 bits equal to bottom 16 bits, "
+ "idrev: 0x%08X", pdata->idrev);
+ SMSC_TRACE("This may mean the chip is set for 32 bit while "
+ "the bus is reading as 16 bit");
+ return -ENODEV;
+ }
+ switch (pdata->idrev & 0xFFFF0000) {
+ case 0x01180000:
+ switch (pdata->idrev & 0x0000FFFFUL) {
+ case 0UL:
+ SMSC_TRACE("LAN9118 Beacon identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 0;
+ break;
+ case 1UL:
+ SMSC_TRACE
+ ("LAN9118 Concord A0 identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 1;
+ break;
+ case 2UL:
+ SMSC_TRACE
+ ("LAN9118 Concord A1 identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 2;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9118 Concord A1 identified (NEW), idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 2;
+ break;
+ }
+ break;
+
+ case 0x01170000:
+ switch (pdata->idrev & 0x0000FFFFUL) {
+ case 0UL:
+ SMSC_TRACE("LAN9117 Beacon identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 0;
+ break;
+ case 1UL:
+ SMSC_TRACE
+ ("LAN9117 Concord A0 identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 1;
+ break;
+ case 2UL:
+ SMSC_TRACE
+ ("LAN9117 Concord A1 identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 2;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9117 Concord A1 identified (NEW), idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 2;
+ break;
+ }
+ break;
+
+ case 0x01160000:
+ switch (pdata->idrev & 0x0000FFFFUL) {
+ case 0UL:
+ SMSC_WARNING("LAN911x not identified, idrev: 0x%08X",
+ pdata->idrev);
+ return -ENODEV;
+ case 1UL:
+ SMSC_TRACE
+ ("LAN9116 Concord A0 identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 1;
+ break;
+ case 2UL:
+ SMSC_TRACE
+ ("LAN9116 Concord A1 identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 2;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9116 Concord A1 identified (NEW), idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 2;
+ break;
+ }
+ break;
+
+ case 0x01150000:
+ switch (pdata->idrev & 0x0000FFFFUL) {
+ case 0UL:
+ SMSC_WARNING("LAN911x not identified, idrev: 0x%08X",
+ pdata->idrev);
+ return -ENODEV;
+ case 1UL:
+ SMSC_TRACE
+ ("LAN9115 Concord A0 identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 1;
+ break;
+ case 2UL:
+ SMSC_TRACE
+ ("LAN9115 Concord A1 identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 2;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9115 Concord A1 identified (NEW), idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 2;
+ break;
+ }
+ break;
+
+ case 0x118A0000UL:
+ switch (pdata->idrev & 0x0000FFFFUL) {
+ case 0UL:
+ SMSC_TRACE
+ ("LAN9218 Boylston identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 3;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9218 Boylston identified (NEW), idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 3;
+ break;
+ }
+ break;
+
+ case 0x117A0000UL:
+ switch (pdata->idrev & 0x0000FFFFUL) {
+ case 0UL:
+ SMSC_TRACE
+ ("LAN9217 Boylston identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 3;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9217 Boylston identified (NEW), idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 3;
+ break;
+ }
+ break;
+
+ case 0x116A0000UL:
+ switch (pdata->idrev & 0x0000FFFFUL) {
+ case 0UL:
+ SMSC_TRACE
+ ("LAN9216 Boylston identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 3;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9216 Boylston identified (NEW), idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 3;
+ break;
+ }
+ break;
+
+ case 0x115A0000UL:
+ switch (pdata->idrev & 0x0000FFFFUL) {
+ case 0UL:
+ SMSC_TRACE
+ ("LAN9215 Boylston identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 3;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9215 Boylston identified (NEW), idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 3;
+ break;
+ }
+ break;
+
+ default:
+ SMSC_WARNING("LAN911x not identified, idrev: 0x%08X",
+ pdata->idrev);
+ return -ENODEV;
+ }
+
+ if (pdata->generation == 0)
+ SMSC_WARNING("This driver is not intended "
+ "for this chip revision");
+
+ ether_setup(dev);
+ dev->open = smsc911x_open;
+ dev->stop = smsc911x_stop;
+ dev->hard_start_xmit = smsc911x_hard_start_xmit;
+ dev->get_stats = smsc911x_get_stats;
+ dev->set_multicast_list = smsc911x_set_multicast_list;
+ dev->flags |= IFF_MULTICAST;
+ dev->do_ioctl = smsc911x_do_ioctl;
+ dev->poll = smsc911x_poll;
+ dev->weight = 64;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ dev->poll_controller = smsc911x_poll_controller;
+#endif /* CONFIG_NET_POLL_CONTROLLER */
+
+ return 0;
+}
+
+static int smsc911x_drv_remove(struct platform_device *pdev)
+{
+ struct net_device *dev;
+ struct smsc911x_data *pdata;
+ struct resource *res;
+
+ dev = platform_get_drvdata(pdev);
+ BUG_ON(!dev);
+ pdata = netdev_priv(dev);
+ BUG_ON(!pdata);
+ BUG_ON(!pdata->ioaddr);
+
+ SMSC_TRACE("Stopping driver.");
+ platform_set_drvdata(pdev, NULL);
+ unregister_netdev(dev);
+ free_irq(dev->irq, dev);
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+ "smsc911x-memory");
+ if (!res)
+ platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+ release_mem_region(res->start, res->end - res->start);
+
+ iounmap(pdata->ioaddr);
+
+ free_netdev(dev);
+
+ return 0;
+}
+
+static int smsc911x_drv_probe(struct platform_device *pdev)
+{
+ struct net_device *dev;
+ struct smsc911x_data *pdata;
+ struct resource *res;
+ int res_size;
+ int retval;
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+ "smsc911x-memory");
+ if (!res)
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ retval = -ENODEV;
+ goto out;
+ }
+ res_size = res->end - res->start;
+
+ if (!request_mem_region(res->start, res_size, SMSC_CHIPNAME)) {
+ retval = -EBUSY;
+ goto out;
+ }
+
+ dev = alloc_etherdev(sizeof(struct smsc911x_data));
+ if (!dev) {
+ printk(KERN_WARNING "%s: Could not allocate device.\n",
+ SMSC_CHIPNAME);
+ retval = -ENOMEM;
+ goto out_release_io;
+ }
+ SET_MODULE_OWNER(dev);
+ SET_NETDEV_DEV(dev, &pdev->dev);
+
+ pdata = netdev_priv(dev);
+ memset(pdata, 0, sizeof(struct smsc911x_data));
+
+ dev->irq = platform_get_irq(pdev, 0);
+ pdata->ioaddr = ioremap_nocache(res->start, res_size);
+
+ if (pdata->ioaddr == NULL) {
+ SMSC_WARNING("Error smsc911x base address invalid");
+ retval = -ENOMEM;
+ goto out_free_netdev;
+ }
+
+ if ((retval = smsc911x_init(dev)) < 0)
+ goto out_unmap_io;
+
+ if (request_irq(dev->irq, smsc911x_irqhandler,
+ SA_INTERRUPT, SMSC_CHIPNAME, dev) != 0) {
+ SMSC_WARNING("Unable to claim requested irq: %d", dev->irq);
+ retval = -ENODEV;
+ goto out_unmap_io;
+ }
+
+ platform_set_drvdata(pdev, dev);
+ retval = register_netdev(dev);
+
+ if (retval) {
+ SMSC_WARNING("Error %i registering device", retval);
+ retval = -ENODEV;
+ goto out_unset_drvdata;
+ } else {
+ SMSC_TRACE("Network interface: \"%s\"", dev->name);
+ }
+
+ return 0;
+
+out_unset_drvdata:
+ platform_set_drvdata(pdev, NULL);
+out_unmap_io:
+ iounmap(pdata->ioaddr);
+out_free_netdev:
+ free_netdev(dev);
+out_release_io:
+ release_mem_region(res->start, res->end - res->start);
+out:
+ return retval;
+}
+
+static struct platform_driver smsc911x_driver = {
+ .probe = smsc911x_drv_probe,
+ .remove = smsc911x_drv_remove,
+ .suspend = 0, /* TODO: Add suspend routine */
+ .resume = 0, /* TODO: Add resume routine */
+ .driver = {
+ .name = SMSC_CHIPNAME,
+ },
+};
+
+/* Entry point for loading the module */
+static int __init smsc911x_init_module(void)
+{
+ platform_driver_register(&smsc911x_driver);
+ return 0;
+}
+
+/* entry point for unloading the module */
+static void __exit smsc911x_cleanup_module(void)
+{
+ platform_driver_unregister(&smsc911x_driver);
+}
+
+module_init(smsc911x_init_module);
+module_exit(smsc911x_cleanup_module);
diff --git a/drivers/net/smsc911x.h b/drivers/net/smsc911x.h
new file mode 100644
index 0000000..c9134ac
--- /dev/null
+++ b/drivers/net/smsc911x.h
@@ -0,0 +1,442 @@
+#ifndef __SMSC911X_H__
+#define __SMSC911X_H__
+
+#define USE_PHY_WORK_AROUND
+#define USE_LED1_WORK_AROUND /* 10/100 LED link-state inversion */
+
+/* Debugging */
+#define USE_DEBUG 0
+#if USE_DEBUG >= 1
+#define SMSC_WARNING(fmt, args...) \
+ printk(KERN_EMERG "SMSC_WARNING: %s: " fmt "\n", \
+ __FUNCTION__ , ## args)
+#else
+#define SMSC_WARNING(msg, args...)
+#endif /* USE_DEBUG >= 1 */
+
+#if USE_DEBUG >= 2
+#define SMSC_TRACE(fmt,args...) \
+ printk(KERN_EMERG "SMSC_TRACE: %s: " fmt "\n", \
+ __FUNCTION__ , ## args)
+#else
+#define SMSC_TRACE(msg,args...)
+#endif /* USE_DEBUG >= 2 */
+
+struct smsc911x_data {
+ void __iomem *ioaddr;
+ unsigned int idrev;
+ unsigned int generation; /* used to decide which workarounds apply */
+
+ /* This needs to be acquired before calling any of below:
+ * smsc911x_mac_read(), smsc911x_mac_write()
+ * smsc911x_phy_read(), smsc911x_phy_write()
+ */
+ spinlock_t phy_lock;
+
+ struct net_device_stats stats;
+ unsigned int phy_address;
+#ifdef USE_LED1_WORK_AROUND
+ unsigned int gpio_setting;
+ unsigned int gpio_orig_setting;
+ unsigned int not_using_extphy;
+#endif
+ unsigned int link_speed;
+ unsigned int link_settings;
+ struct timer_list link_poll_timer;
+ int stop_link_poll;
+
+ int request_irq_disable;
+ int software_irq_signal;
+
+#ifdef USE_PHY_WORK_AROUND
+#define MIN_PACKET_SIZE (64)
+ char loopback_tx_pkt[MIN_PACKET_SIZE];
+ char loopback_rx_pkt[MIN_PACKET_SIZE];
+ unsigned int resetcount;
+#endif
+
+ /* Members for Multicast filter workaround */
+ unsigned int multicast_update_pending;
+ unsigned int set_bits_mask;
+ unsigned int clear_bits_mask;
+ unsigned int hashhi;
+ unsigned int hashlo;
+};
+
+#define TX_FIFO_LOW_THRESHOLD (1600)
+
+/* IO macros for portability */
+
+#define SMSC_CAN_USE_16BIT 0
+#define SMSC_CAN_USE_32BIT 1
+
+#if SMSC_CAN_USE_16BIT
+
+static inline u32 smsc911x_reg_read(struct smsc911x_data *pdata, u32 reg)
+{
+ u32 reg_val;
+ unsigned long flags;
+
+ /* these two 16-bit reads must be performed consecutively, so must
+ * not be interrupted by our own ISR (which would start another
+ * read operation) */
+ local_irq_save(flags);
+ reg_val =
+ ((readw((u16 *)(((unsigned int)pdata->ioaddr) + reg)) & 0xFFFF) |
+ ((readw((u16 *)(((unsigned int)pdata->ioaddr) + reg + 2)) &
+ 0xFFFF) << 16));
+ local_irq_restore(flags);
+
+ return reg_val;
+}
+
+static inline void smsc911x_reg_write(u32 val, struct smsc911x_data *pdata,
+ u32 reg)
+{
+ unsigned long flags;
+
+ /* these two 16-bit writes must be performed consecutively, so must
+ * not be interrupted by our own ISR (which would start another
+ * read operation) */
+ local_irq_save(flags);
+ writew(val & 0xFFFF, (u16 *)(((unsigned int)pdata->ioaddr) + reg));
+ writew(((val >> 16) & 0xFFFF),
+ (u16 *)(((unsigned int)pdata->ioaddr) + reg + 2));
+ local_irq_restore(flags);
+}
+
+#elif SMSC_CAN_USE_32BIT
+
+static inline u32 smsc911x_reg_read(struct smsc911x_data *pdata, u32 reg)
+{
+ return readl((u32 *)(((unsigned int)pdata->ioaddr) + reg));
+}
+
+static inline void smsc911x_reg_write(u32 val, struct smsc911x_data *pdata,
+ u32 reg)
+{
+ writel(val, (u32 *)(((unsigned int)pdata->ioaddr) + reg));
+}
+
+#endif /* SMSC_CAN_USE_32BIT */
+
+/* SMSC911x registers and bitfields */
+#define RX_DATA_FIFO 0x00
+
+#define TX_DATA_FIFO 0x20
+#define TX_CMD_A_ON_COMP_ 0x80000000
+#define TX_CMD_A_BUF_END_ALGN_ 0x03000000
+#define TX_CMD_A_4_BYTE_ALGN_ 0x00000000
+#define TX_CMD_A_16_BYTE_ALGN_ 0x01000000
+#define TX_CMD_A_32_BYTE_ALGN_ 0x02000000
+#define TX_CMD_A_DATA_OFFSET_ 0x001F0000
+#define TX_CMD_A_FIRST_SEG_ 0x00002000
+#define TX_CMD_A_LAST_SEG_ 0x00001000
+#define TX_CMD_A_BUF_SIZE_ 0x000007FF
+#define TX_CMD_B_PKT_TAG_ 0xFFFF0000
+#define TX_CMD_B_ADD_CRC_DISABLE_ 0x00002000
+#define TX_CMD_B_DISABLE_PADDING_ 0x00001000
+#define TX_CMD_B_PKT_BYTE_LENGTH_ 0x000007FF
+
+#define RX_STATUS_FIFO 0x40
+#define RX_STS_ES_ 0x00008000
+#define RX_STS_MCAST_ 0x00000400
+#define RX_STATUS_FIFO_PEEK 0x44
+#define TX_STATUS_FIFO 0x48
+#define TX_STATUS_FIFO_PEEK 0x4C
+#define ID_REV 0x50
+#define ID_REV_CHIP_ID_ 0xFFFF0000 /* RO */
+#define ID_REV_REV_ID_ 0x0000FFFF /* RO */
+
+#define INT_CFG 0x54
+#define INT_CFG_INT_DEAS_ 0xFF000000 /* R/W */
+#define INT_CFG_INT_DEAS_CLR_ 0x00004000 /* SC */
+#define INT_CFG_INT_DEAS_STS_ 0x00002000 /* SC */
+#define INT_CFG_IRQ_INT_ 0x00001000 /* RO */
+#define INT_CFG_IRQ_EN_ 0x00000100 /* R/W */
+#define INT_CFG_IRQ_POL_ 0x00000010 /* R/W Not Affected by SW Reset */
+#define INT_CFG_IRQ_TYPE_ 0x00000001 /* R/W Not Affected by SW Reset */
+
+#define INT_STS 0x58
+#define INT_STS_SW_INT_ 0x80000000 /* R/WC */
+#define INT_STS_TXSTOP_INT_ 0x02000000 /* R/WC */
+#define INT_STS_RXSTOP_INT_ 0x01000000 /* R/WC */
+#define INT_STS_RXDFH_INT_ 0x00800000 /* R/WC */
+#define INT_STS_RXDF_INT_ 0x00400000 /* R/WC */
+#define INT_STS_TX_IOC_ 0x00200000 /* R/WC */
+#define INT_STS_RXD_INT_ 0x00100000 /* R/WC */
+#define INT_STS_GPT_INT_ 0x00080000 /* R/WC */
+#define INT_STS_PHY_INT_ 0x00040000 /* RO */
+#define INT_STS_PME_INT_ 0x00020000 /* R/WC */
+#define INT_STS_TXSO_ 0x00010000 /* R/WC */
+#define INT_STS_RWT_ 0x00008000 /* R/WC */
+#define INT_STS_RXE_ 0x00004000 /* R/WC */
+#define INT_STS_TXE_ 0x00002000 /* R/WC */
+#define INT_STS_TDFU_ 0x00000800 /* R/WC */
+#define INT_STS_TDFO_ 0x00000400 /* R/WC */
+#define INT_STS_TDFA_ 0x00000200 /* R/WC */
+#define INT_STS_TSFF_ 0x00000100 /* R/WC */
+#define INT_STS_TSFL_ 0x00000080 /* R/WC */
+#define INT_STS_RXDF_ 0x00000040 /* R/WC */
+#define INT_STS_RDFL_ 0x00000020 /* R/WC */
+#define INT_STS_RSFF_ 0x00000010 /* R/WC */
+#define INT_STS_RSFL_ 0x00000008 /* R/WC */
+#define INT_STS_GPIO2_INT_ 0x00000004 /* R/WC */
+#define INT_STS_GPIO1_INT_ 0x00000002 /* R/WC */
+#define INT_STS_GPIO0_INT_ 0x00000001 /* R/WC */
+#define INT_EN 0x5C
+#define INT_EN_SW_INT_EN_ 0x80000000 /* R/W */
+#define INT_EN_TXSTOP_INT_EN_ 0x02000000 /* R/W */
+#define INT_EN_RXSTOP_INT_EN_ 0x01000000 /* R/W */
+#define INT_EN_RXDFH_INT_EN_ 0x00800000 /* R/W */
+#define INT_EN_TIOC_INT_EN_ 0x00200000 /* R/W */
+#define INT_EN_RXD_INT_EN_ 0x00100000 /* R/W */
+#define INT_EN_GPT_INT_EN_ 0x00080000 /* R/W */
+#define INT_EN_PHY_INT_EN_ 0x00040000 /* R/W */
+#define INT_EN_PME_INT_EN_ 0x00020000 /* R/W */
+#define INT_EN_TXSO_EN_ 0x00010000 /* R/W */
+#define INT_EN_RWT_EN_ 0x00008000 /* R/W */
+#define INT_EN_RXE_EN_ 0x00004000 /* R/W */
+#define INT_EN_TXE_EN_ 0x00002000 /* R/W */
+#define INT_EN_TDFU_EN_ 0x00000800 /* R/W */
+#define INT_EN_TDFO_EN_ 0x00000400 /* R/W */
+#define INT_EN_TDFA_EN_ 0x00000200 /* R/W */
+#define INT_EN_TSFF_EN_ 0x00000100 /* R/W */
+#define INT_EN_TSFL_EN_ 0x00000080 /* R/W */
+#define INT_EN_RXDF_EN_ 0x00000040 /* R/W */
+#define INT_EN_RDFL_EN_ 0x00000020 /* R/W */
+#define INT_EN_RSFF_EN_ 0x00000010 /* R/W */
+#define INT_EN_RSFL_EN_ 0x00000008 /* R/W */
+#define INT_EN_GPIO2_INT_ 0x00000004 /* R/W */
+#define INT_EN_GPIO1_INT_ 0x00000002 /* R/W */
+#define INT_EN_GPIO0_INT_ 0x00000001 /* R/W */
+
+#define BYTE_TEST 0x64
+#define FIFO_INT 0x68
+#define FIFO_INT_TX_AVAIL_LEVEL_ 0xFF000000/* R/W */
+#define FIFO_INT_TX_STS_LEVEL_ 0x00FF0000/* R/W */
+#define FIFO_INT_RX_AVAIL_LEVEL_ 0x0000FF00/* R/W */
+#define FIFO_INT_RX_STS_LEVEL_ 0x000000FF/* R/W */
+
+#define RX_CFG 0x6C
+#define RX_CFG_RX_END_ALGN_ 0xC0000000 /* R/W */
+#define RX_CFG_RX_END_ALGN4_ 0x00000000 /* R/W */
+#define RX_CFG_RX_END_ALGN16_ 0x40000000 /* R/W */
+#define RX_CFG_RX_END_ALGN32_ 0x80000000 /* R/W */
+#define RX_CFG_RX_DMA_CNT_ 0x0FFF0000 /* R/W */
+#define RX_CFG_RX_DUMP_ 0x00008000 /* R/W */
+#define RX_CFG_RXDOFF_ 0x00001F00 /* R/W */
+
+#define TX_CFG 0x70
+#define TX_CFG_TXS_DUMP_ 0x00008000 /* Self Clearing */
+#define TX_CFG_TXD_DUMP_ 0x00004000 /* Self Clearing */
+#define TX_CFG_TXSAO_ 0x00000004 /* R/W */
+#define TX_CFG_TX_ON_ 0x00000002 /* R/W */
+#define TX_CFG_STOP_TX_ 0x00000001 /* Self Clearing */
+
+#define HW_CFG 0x74
+#define HW_CFG_TTM_ 0x00200000 /* R/W */
+#define HW_CFG_SF_ 0x00100000 /* R/W */
+#define HW_CFG_TX_FIF_SZ_ 0x000F0000 /* R/W */
+#define HW_CFG_TR_ 0x00003000 /* R/W */
+
+/* R/W only available on 115/117 */
+#define HW_CFG_PHY_CLK_SEL_ 0x00000060
+
+/* R/W only available on 115/117 */
+#define HW_CFG_PHY_CLK_SEL_INT_PHY_ 0x00000000
+
+/* R/W only available on 115/117 */
+#define HW_CFG_PHY_CLK_SEL_EXT_PHY_ 0x00000020
+
+/* R/W only available on 115/117 */
+#define HW_CFG_PHY_CLK_SEL_CLK_DIS_ 0x00000040
+
+/* R/W only available on 115/117 */
+#define HW_CFG_SMI_SEL_ 0x00000010
+
+/* RO only available on 115/117 */
+#define HW_CFG_EXT_PHY_DET_ 0x00000008
+
+/* R/W only available on 115/117 */
+#define HW_CFG_EXT_PHY_EN_ 0x00000004
+
+/* RO only available on 116/118 */
+#define HW_CFG_32_16_BIT_MODE_ 0x00000004
+
+/* RO only available on 115/117 */
+#define HW_CFG_SRST_TO_ 0x00000002
+#define HW_CFG_SRST_ 0x00000001 /* Self Clearing */
+
+#define RX_DP_CTRL 0x78
+#define RX_DP_CTRL_RX_FFWD_ 0x80000000 /* RO */
+
+#define RX_FIFO_INF 0x7C
+#define RX_FIFO_INF_RXSUSED_ 0x00FF0000 /* RO */
+#define RX_FIFO_INF_RXDUSED_ 0x0000FFFF /* RO */
+
+#define TX_FIFO_INF 0x80
+#define TX_FIFO_INF_TSUSED_ 0x00FF0000 /* RO */
+#define TX_FIFO_INF_TDFREE_ 0x0000FFFF /* RO */
+
+#define PMT_CTRL 0x84
+#define PMT_CTRL_PM_MODE_ 0x00003000 /* Self Clearing */
+#define PMT_CTRL_PM_MODE_D0_ 0x00000000 /* Self Clearing */
+#define PMT_CTRL_PM_MODE_D1_ 0x00001000 /* Self Clearing */
+#define PMT_CTRL_PM_MODE_D2_ 0x00002000 /* Self Clearing */
+#define PMT_CTRL_PM_MODE_D3_ 0x00003000 /* Self Clearing */
+#define PMT_CTRL_PHY_RST_ 0x00000400 /* Self Clearing */
+#define PMT_CTRL_WOL_EN_ 0x00000200 /* R/W */
+#define PMT_CTRL_ED_EN_ 0x00000100 /* R/W */
+#define PMT_CTRL_PME_TYPE_ 0x00000040 /* R/W
+ * Not Affected by
+ * SW Reset */
+#define PMT_CTRL_WUPS_ 0x00000030 /* R/WC */
+#define PMT_CTRL_WUPS_NOWAKE_ 0x00000000 /* R/WC */
+#define PMT_CTRL_WUPS_ED_ 0x00000010 /* R/WC */
+#define PMT_CTRL_WUPS_WOL_ 0x00000020 /* R/WC */
+#define PMT_CTRL_WUPS_MULTI_ 0x00000030 /* R/WC */
+#define PMT_CTRL_PME_IND_ 0x00000008 /* R/W */
+#define PMT_CTRL_PME_POL_ 0x00000004 /* R/W */
+#define PMT_CTRL_PME_EN_ 0x00000002 /* R/W
+ * Not Affected by
+ * SW Reset */
+#define PMT_CTRL_READY_ 0x00000001 /* RO */
+
+#define GPIO_CFG 0x88
+#define GPIO_CFG_LED3_EN_ 0x40000000 /* R/W */
+#define GPIO_CFG_LED2_EN_ 0x20000000 /* R/W */
+#define GPIO_CFG_LED1_EN_ 0x10000000 /* R/W */
+#define GPIO_CFG_GPIO2_INT_POL_ 0x04000000 /* R/W */
+#define GPIO_CFG_GPIO1_INT_POL_ 0x02000000 /* R/W */
+#define GPIO_CFG_GPIO0_INT_POL_ 0x01000000 /* R/W */
+#define GPIO_CFG_EEPR_EN_ 0x00700000 /* R/W */
+#define GPIO_CFG_GPIOBUF2_ 0x00040000 /* R/W */
+#define GPIO_CFG_GPIOBUF1_ 0x00020000 /* R/W */
+#define GPIO_CFG_GPIOBUF0_ 0x00010000 /* R/W */
+#define GPIO_CFG_GPIODIR2_ 0x00000400 /* R/W */
+#define GPIO_CFG_GPIODIR1_ 0x00000200 /* R/W */
+#define GPIO_CFG_GPIODIR0_ 0x00000100 /* R/W */
+#define GPIO_CFG_GPIOD4_ 0x00000020 /* R/W */
+#define GPIO_CFG_GPIOD3_ 0x00000010 /* R/W */
+#define GPIO_CFG_GPIOD2_ 0x00000004 /* R/W */
+#define GPIO_CFG_GPIOD1_ 0x00000002 /* R/W */
+#define GPIO_CFG_GPIOD0_ 0x00000001 /* R/W */
+
+#define GPT_CFG 0x8C
+#define GPT_CFG_TIMER_EN_ 0x20000000 /* R/W */
+#define GPT_CFG_GPT_LOAD_ 0x0000FFFF /* R/W */
+
+#define GPT_CNT 0x90
+#define GPT_CNT_GPT_CNT_ 0x0000FFFF /* RO */
+
+#define ENDIAN 0x98
+#define FREE_RUN 0x9C
+#define RX_DROP 0xA0
+#define MAC_CSR_CMD 0xA4
+#define MAC_CSR_CMD_CSR_BUSY_ 0x80000000 /* Self Clearing */
+#define MAC_CSR_CMD_R_NOT_W_ 0x40000000 /* R/W */
+#define MAC_CSR_CMD_CSR_ADDR_ 0x000000FF /* R/W */
+
+#define MAC_CSR_DATA 0xA8
+#define AFC_CFG 0xAC
+#define AFC_CFG_AFC_HI_ 0x00FF0000 /* R/W */
+#define AFC_CFG_AFC_LO_ 0x0000FF00 /* R/W */
+#define AFC_CFG_BACK_DUR_ 0x000000F0 /* R/W */
+#define AFC_CFG_FCMULT_ 0x00000008 /* R/W */
+#define AFC_CFG_FCBRD_ 0x00000004 /* R/W */
+#define AFC_CFG_FCADD_ 0x00000002 /* R/W */
+#define AFC_CFG_FCANY_ 0x00000001 /* R/W */
+
+#define E2P_CMD 0xB0
+#define E2P_CMD_EPC_BUSY_ 0x80000000 /* Self Clearing */
+#define E2P_CMD_EPC_CMD_ 0x70000000 /* R/W */
+#define E2P_CMD_EPC_CMD_READ_ 0x00000000 /* R/W */
+#define E2P_CMD_EPC_CMD_EWDS_ 0x10000000 /* R/W */
+#define E2P_CMD_EPC_CMD_EWEN_ 0x20000000 /* R/W */
+#define E2P_CMD_EPC_CMD_WRITE_ 0x30000000 /* R/W */
+#define E2P_CMD_EPC_CMD_WRAL_ 0x40000000 /* R/W */
+#define E2P_CMD_EPC_CMD_ERASE_ 0x50000000 /* R/W */
+#define E2P_CMD_EPC_CMD_ERAL_ 0x60000000 /* R/W */
+#define E2P_CMD_EPC_CMD_RELOAD_ 0x70000000 /* R/W */
+#define E2P_CMD_EPC_TIMEOUT_ 0x00000200 /* R */
+#define E2P_CMD_MAC_ADDR_LOADED_ 0x00000100 /* RO */
+#define E2P_CMD_EPC_ADDR_ 0x000000FF /* R/W */
+
+#define E2P_DATA 0xB4
+#define E2P_DATA_EEPROM_DATA_ 0x000000FF /* R/W */
+#define LAN_REGISTER_EXTENT 0x00000100
+
+#define LINK_OFF 0x00
+#define LINK_SPEED_10HD 0x01
+#define LINK_SPEED_10FD 0x02
+#define LINK_SPEED_100HD 0x04
+#define LINK_SPEED_100FD 0x08
+#define LINK_SYMMETRIC_PAUSE 0x10
+#define LINK_ASYMMETRIC_PAUSE 0x20
+#define LINK_AUTO_NEGOTIATE 0x40
+
+/*
+ * MAC Control and Status Register (Indirect Address)
+ * Offset (through the MAC_CSR CMD and DATA port)
+ */
+#define MAC_CR 0x01 /* R/W */
+
+/* MAC_CR - MAC Control Register */
+#define MAC_CR_RXALL_ 0x80000000
+#define MAC_CR_HBDIS_ 0x10000000
+#define MAC_CR_RCVOWN_ 0x00800000
+#define MAC_CR_LOOPBK_ 0x00200000
+#define MAC_CR_FDPX_ 0x00100000
+#define MAC_CR_MCPAS_ 0x00080000
+#define MAC_CR_PRMS_ 0x00040000
+#define MAC_CR_INVFILT_ 0x00020000
+#define MAC_CR_PASSBAD_ 0x00010000
+#define MAC_CR_HFILT_ 0x00008000
+#define MAC_CR_HPFILT_ 0x00002000
+#define MAC_CR_LCOLL_ 0x00001000
+#define MAC_CR_BCAST_ 0x00000800
+#define MAC_CR_DISRTY_ 0x00000400
+#define MAC_CR_PADSTR_ 0x00000100
+#define MAC_CR_BOLMT_MASK_ 0x000000C0
+#define MAC_CR_DFCHK_ 0x00000020
+#define MAC_CR_TXEN_ 0x00000008
+#define MAC_CR_RXEN_ 0x00000004
+
+#define ADDRH 0x02 /* R/W mask 0x0000FFFFUL */
+#define ADDRL 0x03 /* R/W mask 0xFFFFFFFFUL */
+#define HASHH 0x04 /* R/W */
+#define HASHL 0x05 /* R/W */
+
+#define MII_ACC 0x06 /* R/W */
+#define MII_ACC_PHY_ADDR_ 0x0000F800
+#define MII_ACC_MIIRINDA_ 0x000007C0
+#define MII_ACC_MII_WRITE_ 0x00000002
+#define MII_ACC_MII_BUSY_ 0x00000001
+
+#define MII_DATA 0x07 /* R/W mask 0x0000FFFFUL */
+
+#define FLOW 0x08 /* R/W */
+#define FLOW_FCPT_ 0xFFFF0000
+#define FLOW_FCPASS_ 0x00000004
+#define FLOW_FCEN_ 0x00000002
+#define FLOW_FCBSY_ 0x00000001
+
+#define VLAN1 0x09 /* R/W mask 0x0000FFFFUL */
+#define VLAN2 0x0A /* R/W mask 0x0000FFFFUL */
+
+#define WUFF 0x0B /* WO */
+
+#define WUCSR 0x0C /* R/W */
+#define WUCSR_GUE_ 0x00000200
+#define WUCSR_WUFR_ 0x00000040
+#define WUCSR_MPR_ 0x00000020
+#define WUCSR_WAKE_EN_ 0x00000004
+#define WUCSR_MPEN_ 0x00000002
+
+/*
+ * Phy definitions
+ */
+#define LAN9118_PHY_ID 0x00C0001C
+
+#endif /* __SMSC911X_H__ */
--
1.4.0
^ permalink raw reply related [flat|nested] 20+ messages in thread
* Re: [PATCH] SMSC LAN911x and LAN921x vendor driver
2006-08-01 15:12 ` [PATCH] " Steve Glendinning
@ 2006-08-01 15:33 ` John W. Linville
2006-08-02 19:23 ` Steve.Glendinning
2006-08-01 18:28 ` Scott Murray
2006-08-01 21:40 ` Francois Romieu
2 siblings, 1 reply; 20+ messages in thread
From: John W. Linville @ 2006-08-01 15:33 UTC (permalink / raw)
To: Steve Glendinning
Cc: netdev, Ian Saturley, Bahadir Balban, Stephen Hemminger,
Francois Romieu
On Tue, Aug 01, 2006 at 04:12:15PM +0100, Steve Glendinning wrote:
> > > Attached is a driver patch for SMSC911x family of ethernet chips,
> > > generated against 2.6.18-rc1 sources. There's a similar driver in the
> > > tree; this one has been tested by SMSC on all flavors of the chip and
> > > claimed to be efficient.
> >
> > Updated after feedback from Stephen Hemminger.
> >
> > Driver updated to also support LAN921x family. Workarounds added for
> > known hardware issues.
>
> Many improvements following feedback from Stephen Hemminger and
> Francois Romieu:
> - Tasklet removed, NAPI poll used instead
> - Multiple device support
> - style fixes & minor improvements
<snip>
> +/* waits for MAC not busy, with timeout. Assumes MacPhyAccessLock has
> + * already been acquired */
> +static int smsc911x_mac_notbusy(struct smsc911x_data *pdata)
> +{
> + int i;
> +
> + for (i = 0; i < 40; i++) {
> + if ((smsc911x_reg_read(pdata, MAC_CSR_CMD)
> + & MAC_CSR_CMD_CSR_BUSY_) == 0) {
> + return 1;
> + }
> + }
> + SMSC_WARNING("Timed out waiting for MAC not BUSY. "
> + "MAC_CSR_CMD: 0x%08X", smsc911x_reg_read(pdata,
> + MAC_CSR_CMD));
> + return 0;
> +}
How is the length of this timeout controlled? IOW, what prevents
it from being too short when the Omegatron 128 running at 10GHz hits
the market? Are you relying on the MII clock rate?
<snip>
> +/* Gets a phy register, phy_lock must be acquired before calling */
> +static unsigned int
> +smsc911x_phy_read(struct smsc911x_data *pdata, unsigned int index)
> +{
> + unsigned int addr;
> + unsigned int result = 0xFFFF;
> + int i;
> +
> + /* Confirm MII not busy */
> + if (unlikely
> + ((smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_) != 0)) {
> + SMSC_WARNING("MII is busy in smsc911x_phy_read???");
> + return 0;
> + }
> +
> + /* Set the address, index & direction (read from PHY) */
> + addr = (((pdata->phy_address) & 0x1F) << 11)
> + | ((index & 0x1F) << 6);
> + smsc911x_mac_write(pdata, MII_ACC, addr);
> +
> + /* Wait for read to complete w/ timeout */
> + for (i = 0; i < 100; i++) {
> + /* See if MII is finished yet */
> + if ((smsc911x_mac_read(pdata, MII_ACC)
> + & MII_ACC_MII_BUSY_) == 0) {
> + result = smsc911x_mac_read(pdata, MII_DATA);
> + return result;
> + }
> + }
> + SMSC_WARNING("Timed out waiting for MII write to finish");
Ditto?
<snip>
> +/* Sets a phy register, phy_lock must be acquired before calling */
> +static void smsc911x_phy_write(struct smsc911x_data *pdata,
> + unsigned int index, unsigned int val)
> +{
> + unsigned int addr;
> + int i;
> +
> + /* Confirm MII not busy */
> + if (unlikely
> + ((smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_) != 0)) {
> + SMSC_WARNING("MII is busy in smsc911x_write_phy???");
> + return;
> + }
> +
> + /* Put the data to write in the MAC */
> + smsc911x_mac_write(pdata, MII_DATA, val);
> +
> + /* Set the address, index & direction (write to PHY) */
> + addr = (((pdata->phy_address) & 0x1F) << 11) |
> + ((index & 0x1F) << 6) | MII_ACC_MII_WRITE_;
> + smsc911x_mac_write(pdata, MII_ACC, addr);
> +
> + /* Wait for write to complete w/ timeout */
> + for (i = 0; i < 100; i++) {
> + /* See if MII is finished yet */
> + if ((smsc911x_mac_read(pdata, MII_ACC)
> + & MII_ACC_MII_BUSY_) == 0)
> + return;
> + }
> + SMSC_WARNING("Timed out waiting for MII write to finish");
> +}
Ditto?
> +/* Autodetects and initialises external phy for SMSC9115 and SMSC9117 flavors.
> + * If something goes wrong, returns -ENODEV to revert back to internal phy.
> + * Performed at initialisation only, phy_lock already acquired. */
> +static int smsc911x_phy_initialise_external(struct smsc911x_data *pdata)
> +{
> + unsigned int address;
> + unsigned int hwcfg;
> + unsigned int phyid1;
> + unsigned int phyid2;
> +
> + hwcfg = smsc911x_reg_read(pdata, HW_CFG);
> +
> + /* External phy is requested, supported, and detected */
> + if (hwcfg & HW_CFG_EXT_PHY_DET_) {
> +
> + /* Attempt to switch to external phy for auto-detecting
> + * its address. Assuming tx and rx are stopped because
> + * smsc911x_phy_initialise is called before
> + * smsc911x_rx_initialise and tx_initialise.
> + */
> +
> + /* Disable phy clocks to the MAC */
> + hwcfg &= (~HW_CFG_PHY_CLK_SEL_);
> + hwcfg |= HW_CFG_PHY_CLK_SEL_CLK_DIS_;
> + smsc911x_reg_write(hwcfg, pdata, HW_CFG);
> + udelay(10); /* Enough time for clocks to stop */
> +
> + /* Switch to external phy */
> + hwcfg |= HW_CFG_EXT_PHY_EN_;
> + smsc911x_reg_write(hwcfg, pdata, HW_CFG);
> +
> + /* Enable phy clocks to the MAC */
> + hwcfg &= (~HW_CFG_PHY_CLK_SEL_);
> + hwcfg |= HW_CFG_PHY_CLK_SEL_EXT_PHY_;
> + smsc911x_reg_write(hwcfg, pdata, HW_CFG);
> + udelay(10); /* Enough time for clocks to restart */
> +
> + hwcfg |= HW_CFG_SMI_SEL_;
> + smsc911x_reg_write(hwcfg, pdata, HW_CFG);
> +
> + /* Auto-detect PHY */
> + for (address = 0; address <= 31; address++) {
> + pdata->phy_address = address;
> + phyid1 = smsc911x_phy_read(pdata, MII_PHYSID1);
> + phyid2 = smsc911x_phy_read(pdata, MII_PHYSID2);
> + if ((phyid1 != 0xFFFFU) || (phyid2 != 0xFFFFU)) {
> + SMSC_TRACE("Detected PHY at address = "
> + "0x%02X = %d", address, address);
> + break;
> + }
> + }
Does this need the magic "for (addr=1; addr <=32; addr++)" trick that
has become idiomatic for PHY discovery in our drivers?
<snip>
> --- /dev/null
> +++ b/drivers/net/smsc911x.h
<snip>
> +/* SMSC911x registers and bitfields */
> +#define RX_DATA_FIFO 0x00
> +
> +#define TX_DATA_FIFO 0x20
> +#define TX_CMD_A_ON_COMP_ 0x80000000
> +#define TX_CMD_A_BUF_END_ALGN_ 0x03000000
> +#define TX_CMD_A_4_BYTE_ALGN_ 0x00000000
> +#define TX_CMD_A_16_BYTE_ALGN_ 0x01000000
> +#define TX_CMD_A_32_BYTE_ALGN_ 0x02000000
> +#define TX_CMD_A_DATA_OFFSET_ 0x001F0000
> +#define TX_CMD_A_FIRST_SEG_ 0x00002000
> +#define TX_CMD_A_LAST_SEG_ 0x00001000
> +#define TX_CMD_A_BUF_SIZE_ 0x000007FF
> +#define TX_CMD_B_PKT_TAG_ 0xFFFF0000
> +#define TX_CMD_B_ADD_CRC_DISABLE_ 0x00002000
> +#define TX_CMD_B_DISABLE_PADDING_ 0x00001000
> +#define TX_CMD_B_PKT_BYTE_LENGTH_ 0x000007FF
Looks like something went haywire w/ your tabbing in this file...?
Your style overall is very nice and easy to read.
Thanks,
John
--
John W. Linville
linville@tuxdriver.com
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH] SMSC LAN911x and LAN921x vendor driver
2006-08-01 15:12 ` [PATCH] " Steve Glendinning
2006-08-01 15:33 ` John W. Linville
@ 2006-08-01 18:28 ` Scott Murray
2006-08-01 19:27 ` Steve.Glendinning
2006-08-01 21:40 ` Francois Romieu
2 siblings, 1 reply; 20+ messages in thread
From: Scott Murray @ 2006-08-01 18:28 UTC (permalink / raw)
To: Steve Glendinning
Cc: netdev, Ian Saturley, Bahadir Balban, Stephen Hemminger,
Francois Romieu
On Tue, 1 Aug 2006, Steve Glendinning wrote:
>>> Attached is a driver patch for SMSC911x family of ethernet chips,
>>> generated against 2.6.18-rc1 sources. There's a similar driver in the
>>> tree; this one has been tested by SMSC on all flavors of the chip and
>>> claimed to be efficient.
>>
>> Updated after feedback from Stephen Hemminger.
>>
>> Driver updated to also support LAN921x family. Workarounds added for
>> known hardware issues.
>
> Many improvements following feedback from Stephen Hemminger and
> Francois Romieu:
> - Tasklet removed, NAPI poll used instead
> - Multiple device support
> - style fixes & minor improvements
Sorry to be coming in late, but I'm curious about why this work is being
submitted as a separate driver, rather than as patches against the driver
from Dustin McIntire that was added a few months ago. Is the intention to
go forward with two different drivers for these chips?
Scott
--
==============================================================================
Scott Murray, scott@spiteful.org
"Good, bad ... I'm the guy with the gun." - Ash, "Army of Darkness"
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH] SMSC LAN911x and LAN921x vendor driver
2006-08-01 18:28 ` Scott Murray
@ 2006-08-01 19:27 ` Steve.Glendinning
2006-08-01 23:51 ` Scott Murray
0 siblings, 1 reply; 20+ messages in thread
From: Steve.Glendinning @ 2006-08-01 19:27 UTC (permalink / raw)
To: Scott Murray
Cc: Bahadir Balban, ian.saturley, netdev, Francois Romieu,
Stephen Hemminger
Hi Scott
> Sorry to be coming in late, but I'm curious about why this work is being
> submitted as a separate driver, rather than as patches against the
driver
> from Dustin McIntire that was added a few months ago. Is the intention
to
> go forward with two different drivers for these chips?
I was waiting for someone to ask this!
This driver has been developed by SMSC & ARM, and has several advantages
over the already merged smc911x:
- The current driver is arm specific, our smsc911x driver is tested and
supported on arm, sh, i386
- smsc911x contains support for the new LAN921x family, as well as LAN911x
- smsc911x contains important workarounds for currently known hardware
issues
- It's shorted, and I believe the coding style to be cleaner and easier to
follow.
so I'm presenting this as an alternative. Thoughts?
Regards,
--
Steve Glendinning
SMSC GmbH
m: +44 777 933 9124
e: steve.glendinning@smsc.com
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH] SMSC LAN911x and LAN921x vendor driver
2006-08-01 15:12 ` [PATCH] " Steve Glendinning
2006-08-01 15:33 ` John W. Linville
2006-08-01 18:28 ` Scott Murray
@ 2006-08-01 21:40 ` Francois Romieu
2006-08-02 19:39 ` Steve.Glendinning
2 siblings, 1 reply; 20+ messages in thread
From: Francois Romieu @ 2006-08-01 21:40 UTC (permalink / raw)
To: Steve Glendinning; +Cc: netdev, Ian Saturley, Bahadir Balban, Stephen Hemminger
[...]
> /* Writes a packet to the TX_DATA_FIFO */
> static inline void
> smsc911x_tx_writefifo(struct smsc911x_data *pdata, unsigned int *buf,
> unsigned int wordcount)
> {
> while (wordcount--) {
> smsc911x_reg_write(*buf++, pdata, TX_DATA_FIFO);
> }
Curly braces are not needed around single line blocks.
[...]
> /* waits for MAC not busy, with timeout. Assumes MacPhyAccessLock has
> * already been acquired */
> static int smsc911x_mac_notbusy(struct smsc911x_data *pdata)
> {
> int i;
>
> for (i = 0; i < 40; i++) {
> if ((smsc911x_reg_read(pdata, MAC_CSR_CMD)
> & MAC_CSR_CMD_CSR_BUSY_) == 0) {
> return 1;
> }
> }
> SMSC_WARNING("Timed out waiting for MAC not BUSY. "
> "MAC_CSR_CMD: 0x%08X", smsc911x_reg_read(pdata,
> MAC_CSR_CMD));
> return 0;
u32 val;
for (i = 0; i < 40; i++) {
val = smsc911x_reg_read(pdata, MAC_CSR_CMD);
if (!(val & MAC_CSR_CMD_CSR_BUSY_))
return 1;
}
SMSC_WARNING("Timed out waiting for MAC not BUSY. "
"MAC_CSR_CMD: 0x%08X", val);
-> no painful line-breaking (s/val/{reg/cmd}/ at will).
> }
>
> /* Fetches a MAC register value. Assumes phy_lock is acquired */
> static unsigned int
> smsc911x_mac_read(struct smsc911x_data *pdata, unsigned int offset)
> {
> unsigned int result = 0xFFFFFFFF;
> unsigned int temp;
>
> /* Wait until not busy */
> if (unlikely
> (smsc911x_reg_read(pdata, MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY_)) {
> SMSC_WARNING("smsc911x_mac_read failed, "
> "MAC already busy at entry");
> return result;
> }
>
> /* Send the MAC cmd */
> smsc911x_reg_write(((offset & 0x000000FF) | MAC_CSR_CMD_CSR_BUSY_
> | MAC_CSR_CMD_R_NOT_W_), pdata, MAC_CSR_CMD);
>
> /* Workaround for hardware read-after-write restriction */
> temp = smsc911x_reg_read(pdata, BYTE_TEST);
>
> /* Wait for the read to happen */
> if (unlikely(!smsc911x_mac_notbusy(pdata)))
Double negation (at least :o) ).
[...]
> /* Gets a phy register, phy_lock must be acquired before calling */
> static unsigned int
> smsc911x_phy_read(struct smsc911x_data *pdata, unsigned int index)
> {
> unsigned int addr;
> unsigned int result = 0xFFFF;
> int i;
>
> /* Confirm MII not busy */
> if (unlikely
> ((smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_) != 0)) {
> SMSC_WARNING("MII is busy in smsc911x_phy_read???");
> return 0;
> }
>
> /* Set the address, index & direction (read from PHY) */
> addr = (((pdata->phy_address) & 0x1F) << 11)
> | ((index & 0x1F) << 6);
> smsc911x_mac_write(pdata, MII_ACC, addr);
>
> /* Wait for read to complete w/ timeout */
> for (i = 0; i < 100; i++) {
> /* See if MII is finished yet */
> if ((smsc911x_mac_read(pdata, MII_ACC)
> & MII_ACC_MII_BUSY_) == 0) {
> result = smsc911x_mac_read(pdata, MII_DATA);
> return result;
> }
if (!(smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_))
return smsc911x_mac_read(pdata, MII_DATA);
> }
> SMSC_WARNING("Timed out waiting for MII write to finish");
>
> return result;
I'd go with return 0xffff; here and remove 'result' altogether.
> }
>
> /* Sets a phy register, phy_lock must be acquired before calling */
> static void smsc911x_phy_write(struct smsc911x_data *pdata,
> unsigned int index, unsigned int val)
> {
> unsigned int addr;
> int i;
>
> /* Confirm MII not busy */
> if (unlikely
> ((smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_) != 0)) {
Factor through a smsc911x_mac_busy(pdata) helper ?
[...]
> static int smsc911x_phy_initialise_external(struct smsc911x_data *pdata)
> {
> unsigned int address;
> unsigned int hwcfg;
> unsigned int phyid1;
> unsigned int phyid2;
>
> hwcfg = smsc911x_reg_read(pdata, HW_CFG);
>
> /* External phy is requested, supported, and detected */
> if (hwcfg & HW_CFG_EXT_PHY_DET_) {
>
> /* Attempt to switch to external phy for auto-detecting
> * its address. Assuming tx and rx are stopped because
> * smsc911x_phy_initialise is called before
> * smsc911x_rx_initialise and tx_initialise.
> */
>
> /* Disable phy clocks to the MAC */
> hwcfg &= (~HW_CFG_PHY_CLK_SEL_);
> hwcfg |= HW_CFG_PHY_CLK_SEL_CLK_DIS_;
> smsc911x_reg_write(hwcfg, pdata, HW_CFG);
> udelay(10); /* Enough time for clocks to stop */
>
> /* Switch to external phy */
> hwcfg |= HW_CFG_EXT_PHY_EN_;
> smsc911x_reg_write(hwcfg, pdata, HW_CFG);
>
> /* Enable phy clocks to the MAC */
> hwcfg &= (~HW_CFG_PHY_CLK_SEL_);
> hwcfg |= HW_CFG_PHY_CLK_SEL_EXT_PHY_;
> smsc911x_reg_write(hwcfg, pdata, HW_CFG);
> udelay(10); /* Enough time for clocks to restart */
(back to my original question that I should have reworded in a different
thread)
Does the platform guarantees that the register write has actually reached
the real register when the udelay is issued ?
>
> hwcfg |= HW_CFG_SMI_SEL_;
> smsc911x_reg_write(hwcfg, pdata, HW_CFG);
>
> /* Auto-detect PHY */
> for (address = 0; address <= 31; address++) {
> pdata->phy_address = address;
> phyid1 = smsc911x_phy_read(pdata, MII_PHYSID1);
> phyid2 = smsc911x_phy_read(pdata, MII_PHYSID2);
> if ((phyid1 != 0xFFFFU) || (phyid2 != 0xFFFFU)) {
> SMSC_TRACE("Detected PHY at address = "
> "0x%02X = %d", address, address);
> break;
> }
> }
>
> if ((phyid1 == 0xFFFFU) && (phyid2 == 0xFFFFU)) {
> SMSC_WARNING("External PHY is not accessable, "
> "using internal PHY instead");
> /* Revert back to interal phy settings. */
s/interal/internal/
[...]
> static int smsc911x_phy_reset(struct smsc911x_data *pdata)
> {
> unsigned int temp;
> unsigned int lcount = 100000;
>
> SMSC_TRACE("Performing PHY BCR Reset");
> smsc911x_phy_write(pdata, MII_BMCR, BMCR_RESET);
> do {
> udelay(10);
> temp = smsc911x_phy_read(pdata, MII_BMCR);
> lcount--;
> } while ((lcount > 0) && (temp & BMCR_RESET));
>
> if (temp & BMCR_RESET) {
> SMSC_WARNING("PHY reset failed to complete.");
> return 0;
> }
> /* Extra delay required because the phy may not be completed with
> * its reset when BMCR_RESET is cleared. Specs say 256 uS is
> * enough delay but using 500 here to be safe
> */
> udelay(500);
It would be nice to turn the udelay() into msleep() but this code is issued
from at least one spnlock-protected section.
[...]
> #ifdef USE_PHY_WORK_AROUND
> static int smsc911x_phy_check_loopbackpkt(struct smsc911x_data *pdata)
> {
> unsigned int tries = 0;
> unsigned int lcount = 0;
> u32 wrsz;
> u32 rdsz;
> u32 bufp;
>
> for (tries = 0; tries < 10; tries++) {
Wrong visibility whence an useless initialization of 'lcount'.
[...]
> /* Update link mode if any thing has changed */
> static void smsc911x_phy_update_linkmode(struct net_device *dev)
> {
> struct smsc911x_data *pdata = netdev_priv(dev);
> unsigned int old_link_speed = pdata->link_speed;
> unsigned int temp;
> unsigned long flags;
>
> spin_lock_irqsave(&pdata->phy_lock, flags);
> smsc911x_phy_getlinkmode(pdata);
>
> if (old_link_speed != pdata->link_speed) {
> if (pdata->link_speed != LINK_OFF) {
> unsigned int phy_reg = 0;
> switch (pdata->link_speed) {
> case LINK_SPEED_10HD:
> SMSC_TRACE("Link is now UP at 10Mbps HD");
> break;
> case LINK_SPEED_10FD:
> SMSC_TRACE("Link is now UP at 10Mbps FD");
> break;
> case LINK_SPEED_100HD:
> SMSC_TRACE("Link is now UP at 100Mbps HD");
> break;
> case LINK_SPEED_100FD:
> SMSC_TRACE("Link is now UP at 100Mbps FD");
> break;
> default:
> SMSC_WARNING("Link is now UP at unknown link "
> "speed: 0x%08X",
> pdata->link_speed);
> break;
> }
> phy_reg = smsc911x_mac_read(pdata, MAC_CR);
> phy_reg &= ~(MAC_CR_FDPX_ | MAC_CR_RCVOWN_);
>
> switch (pdata->link_speed) {
> case LINK_SPEED_10HD:
> case LINK_SPEED_100HD:
> phy_reg |= MAC_CR_RCVOWN_;
> break;
>
> case LINK_SPEED_10FD:
> case LINK_SPEED_100FD:
> phy_reg |= MAC_CR_FDPX_;
> break;
>
> default:
> SMSC_WARNING("Unknown link speed: 0x%08X",
> pdata->link_speed);
> break;
> }
>
> smsc911x_mac_write(pdata, MAC_CR, phy_reg);
>
> if (pdata->link_settings & LINK_AUTO_NEGOTIATE) {
> unsigned int linkpartner = 0;
> unsigned int locallink = 0;
> locallink = smsc911x_phy_read(pdata, 4);
> linkpartner = smsc911x_phy_read(pdata, 5);
> switch (pdata->link_speed) {
> case LINK_SPEED_10FD:
> case LINK_SPEED_100FD:
> if (((locallink & linkpartner) &
> LPA_PAUSE_CAP) != 0) {
> /* Enable PAUSE receive and transmit */
> smsc911x_mac_write(pdata, FLOW,
> 0xFFFF0002);
> temp =
> smsc911x_reg_read(pdata,
> AFC_CFG);
> temp |= 0xF;
> smsc911x_reg_write(temp, pdata,
> AFC_CFG);
> } else if (((locallink &
> (ADVERTISE_PAUSE_CAP |
> ADVERTISE_PAUSE_ASYM)) ==
> (ADVERTISE_PAUSE_CAP |
> ADVERTISE_PAUSE_ASYM)) &&
> ((linkpartner &
> (LPA_PAUSE_CAP |
> LPA_PAUSE_ASYM)) ==
> LPA_PAUSE_ASYM)) {
Wow...
[...]
> /* Increments the Rx error counters */
> static void
> smsc911x_rx_counterrors(struct smsc911x_data *pdata, unsigned int rxstat)
> {
> int crc_err;
>
> crc_err = 0;
Merge declaration/initialization.
[...]
> /* Quickly dumps bad packets */
> static void
> smsc911x_rx_fastforward(struct smsc911x_data *pdata, unsigned int count)
> {
> if (likely(count >= 4)) {
> unsigned int timeout = 500;
> smsc911x_reg_write(RX_DP_CTRL_RX_FFWD_, pdata, RX_DP_CTRL);
> while (timeout && (smsc911x_reg_read(pdata, RX_DP_CTRL)
> & RX_DP_CTRL_RX_FFWD_)) {
> udelay(1);
> timeout--;
> }
> if (unlikely(timeout == 0)) {
> SMSC_WARNING("Timed out waiting for RX FFWD "
> "to finish, RX_DP_CTRL: 0x%08X",
> smsc911x_reg_read(pdata, RX_DP_CTRL));
> }
> } else {
> while (count) {
> volatile unsigned int temp;
> temp = smsc911x_reg_read(pdata, RX_DATA_FIFO);
Kill the volatile: there is an implicit readl().
> /* NAPI poll function */
> static int smsc911x_poll(struct net_device *dev, int *budget)
> {
> struct smsc911x_data *pdata = netdev_priv(dev);
> int npackets = 0;
> int quota = min(dev->quota, *budget);
>
> while (npackets < quota) {
> unsigned int pktlength;
> unsigned int rxstat;
> rxstat = smsc911x_rx_get_rxstatus(pdata);
>
> /* break out of while loop if there are no more packets waiting */
> if (rxstat == 0)
> break;
>
> pktlength = ((rxstat & 0x3FFF0000) >> 16);
> smsc911x_rx_counterrors(pdata, rxstat);
>
> if (likely((rxstat & RX_STS_ES_) == 0)) {
> struct sk_buff *skb = NULL;
Useless initialization.
> skb = dev_alloc_skb(pktlength + 2);
s/2/NET_IP_ALIGN/
> if (likely(skb)) {
> skb->data = skb->head;
> skb->tail = skb->head;
> /* Align IP on 16B boundary */
> skb_reserve(skb, 2);
s/2/NET_IP_ALIGN/
[...]
> static int smsc911x_open(struct net_device *dev)
> {
> struct smsc911x_data *pdata = netdev_priv(dev);
> unsigned int mac_high16;
> unsigned int mac_low32;
> unsigned int timeout;
> unsigned int temp;
> unsigned long flags;
>
> spin_lock_init(&pdata->phy_lock);
>
> /* Reset the LAN911x */
> smsc911x_reg_write(HW_CFG_SRST_, pdata, HW_CFG);
> timeout = 10;
> do {
> udelay(10);
> temp = smsc911x_reg_read(pdata, HW_CFG);
> } while ((--timeout) && (temp & HW_CFG_SRST_));
>
> if (unlikely(temp & HW_CFG_SRST_)) {
> SMSC_WARNING("Failed to complete reset");
> return -ENODEV;
> }
>
> smsc911x_reg_write(0x00050000, pdata, HW_CFG);
> smsc911x_reg_write(0x006E3740, pdata, AFC_CFG);
>
> /* Make sure EEPROM has finished loading before setting GPIO_CFG */
> timeout = 50;
> while ((timeout--) &&
> (smsc911x_reg_read(pdata, E2P_CMD) & E2P_CMD_EPC_BUSY_)) {
> udelay(10);
> }
>
> if (unlikely(timeout == 0)) {
> SMSC_WARNING("Timed out waiting for EEPROM "
> "busy bit to clear\n");
> }
> #if USE_DEBUG >= 1
> smsc911x_reg_write(0x00670700, pdata, GPIO_CFG);
> #else
> smsc911x_reg_write(0x70070000, pdata, GPIO_CFG);
> #endif
>
> /* Initialise irqs, but leave all sources disabled */
> smsc911x_reg_write(0, pdata, INT_EN);
> smsc911x_reg_write(0xFFFFFFFF, pdata, INT_STS);
> /* Set interrupt deassertion to 100uS */
> smsc911x_reg_write(((10 << 24) | INT_CFG_IRQ_EN_), pdata, INT_CFG);
>
> /*
> * intcfg |= INT_CFG_IRQ_POL_; use this to set IRQ_POL bit
> * intcfg |= INT_CFG_IRQ_TYPE_; use this to set IRQ_TYPE bit
> */
>
> SMSC_TRACE("Testing irq handler using IRQ %d", dev->irq);
> pdata->request_irq_disable = 0;
> pdata->software_irq_signal = 0;
> temp = smsc911x_reg_read(pdata, INT_EN);
> temp |= INT_EN_SW_INT_EN_;
> smsc911x_reg_write(temp, pdata, INT_EN);
> timeout = 1000;
> do {
> udelay(10);
> } while ((--timeout) && (!pdata->software_irq_signal));
while (timeout--) {
smp_rmb();
if (pdata->software_irq_signal)
break;
msleep(1);
}
+ smp_wmb() in the irq handler.
>
> if (!pdata->software_irq_signal) {
> printk(KERN_WARNING "%s: ISR failed signaling test (IRQ %d)\n",
> dev->name, dev->irq);
> return -ENODEV;
> }
> SMSC_TRACE("IRQ handler passed test using IRQ %d", dev->irq);
>
> printk(KERN_INFO "%s: SMSC911x/921x identified at %#08lx, IRQ: %d\n",
> dev->name, (unsigned long)pdata->ioaddr, dev->irq);
>
> spin_lock_irqsave(&pdata->phy_lock, flags);
flags useless: ->open() is issued in irq-enabled context.
>
> /* Read mac address from EEPROM */
> mac_high16 = smsc911x_mac_read(pdata, ADDRH);
> mac_low32 = smsc911x_mac_read(pdata, ADDRL);
>
> /* Generate random MAC address if eeprom values are invalid */
> if ((mac_high16 == 0x0000FFFF) && (mac_low32 == 0xFFFFFFFF)) {
> u8 random_mac[6];
> random_ether_addr(random_mac);
> mac_high16 = (random_mac[5] << 8) | random_mac[4];
> mac_low32 = (random_mac[3] << 24) | (random_mac[2] << 16) |
> (random_mac[1] << 8) | random_mac[0];
>
> smsc911x_mac_write(pdata, ADDRH, mac_high16);
> smsc911x_mac_write(pdata, ADDRL, mac_low32);
> SMSC_TRACE("MAC Address is set to random_ether_addr");
> } else {
> SMSC_TRACE("Mac Address is read from LAN911x EEPROM");
> }
>
> dev->dev_addr[0] = (u8)(mac_low32);
> dev->dev_addr[1] = (u8)(mac_low32 >> 8);
> dev->dev_addr[2] = (u8)(mac_low32 >> 16);
> dev->dev_addr[3] = (u8)(mac_low32 >> 24);
> dev->dev_addr[4] = (u8)(mac_high16);
> dev->dev_addr[5] = (u8)(mac_high16 >> 8);
> printk(KERN_INFO
> "%s: SMSC911x MAC Address: %02x:%02x:%02x:%02x:%02x:%02x\n",
> dev->name, dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
> dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
>
> netif_carrier_off(dev);
> if (!smsc911x_phy_initialise(dev)) {
> SMSC_WARNING("Failed to initialize PHY");
> return -ENODEV;
return with spinlock held (mantra: use goto).
Any chance you could avoid the spinlock ? It would help turning udelay
into sleep (namely smsc911x_phy_reset).
[...]
> #ifdef CONFIG_NET_POLL_CONTROLLER
> void smsc911x_poll_controller(struct net_device *dev)
> {
> disable_irq(dev->irq);
> smsc911x_irqhandler(0, (void *)dev, NULL);
No need to cast to (void *)
> enable_irq(dev->irq);
> }
> #endif /* CONFIG_NET_POLL_CONTROLLER */
>
> /* Standard ioctls for mii-tool */
> int smsc911x_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
static int
> {
> struct smsc911x_data *pdata = netdev_priv(dev);
> struct mii_ioctl_data *const data =
> (struct mii_ioctl_data *)&ifr->ifr_data;
Use if_mii()
> unsigned long flags;
>
> SMSC_TRACE("ioctl cmd 0x%x", cmd);
> switch (cmd) {
> case SIOCGMIIPHY:
> case SIOCDEVPRIVATE:
The SIOCDEVPRIVATE can/should be removed.
[...]
> static int smsc911x_drv_probe(struct platform_device *pdev)
> {
> struct net_device *dev;
> struct smsc911x_data *pdata;
> struct resource *res;
> int res_size;
> int retval;
>
> res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
> "smsc911x-memory");
> if (!res)
> res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> if (!res) {
> retval = -ENODEV;
> goto out;
> }
> res_size = res->end - res->start;
>
> if (!request_mem_region(res->start, res_size, SMSC_CHIPNAME)) {
> retval = -EBUSY;
> goto out;
> }
>
> dev = alloc_etherdev(sizeof(struct smsc911x_data));
> if (!dev) {
> printk(KERN_WARNING "%s: Could not allocate device.\n",
> SMSC_CHIPNAME);
> retval = -ENOMEM;
> goto out_release_io;
> }
> SET_MODULE_OWNER(dev);
> SET_NETDEV_DEV(dev, &pdev->dev);
>
> pdata = netdev_priv(dev);
> memset(pdata, 0, sizeof(struct smsc911x_data));
>
> dev->irq = platform_get_irq(pdev, 0);
> pdata->ioaddr = ioremap_nocache(res->start, res_size);
>
> if (pdata->ioaddr == NULL) {
> SMSC_WARNING("Error smsc911x base address invalid");
> retval = -ENOMEM;
> goto out_free_netdev;
> }
>
> if ((retval = smsc911x_init(dev)) < 0)
> goto out_unmap_io;
>
> if (request_irq(dev->irq, smsc911x_irqhandler,
> SA_INTERRUPT, SMSC_CHIPNAME, dev) != 0) {
> SMSC_WARNING("Unable to claim requested irq: %d", dev->irq);
> retval = -ENODEV;
Should be retval = request_irq(...)
> goto out_unmap_io;
> }
>
> platform_set_drvdata(pdev, dev);
> retval = register_netdev(dev);
>
> if (retval) {
> SMSC_WARNING("Error %i registering device", retval);
> retval = -ENODEV;
No need to overwrite retval.
> goto out_unset_drvdata;
> } else {
> SMSC_TRACE("Network interface: \"%s\"", dev->name);
> }
>
> return 0;
>
> out_unset_drvdata:
> platform_set_drvdata(pdev, NULL);
Missing free_irq().
Please number the label: out_0, out_release_io_1, etc... It's easier to check.
> out_unmap_io:
> iounmap(pdata->ioaddr);
> out_free_netdev:
> free_netdev(dev);
> out_release_io:
> release_mem_region(res->start, res->end - res->start);
> out:
> return retval;
> }
[...]
> /* Entry point for loading the module */
> static int __init smsc911x_init_module(void)
> {
> platform_driver_register(&smsc911x_driver);
> return 0;
return platform_driver_register(...);
> --- /dev/null
> ++ b/drivers/net/smsc911x.h
|...]
> static inline u32 smsc911x_reg_read(struct smsc911x_data *pdata, u32 reg)
> {
> u32 reg_val;
> unsigned long flags;
>
> /* these two 16-bit reads must be performed consecutively, so must
> * not be interrupted by our own ISR (which would start another
> * read operation) */
> local_irq_save(flags);
> reg_val =
> ((readw((u16 *)(((unsigned int)pdata->ioaddr) + reg)) & 0xFFFF) |
pdata->ioaddr is void * now. Please simplify.
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH] SMSC LAN911x and LAN921x vendor driver
2006-08-01 19:27 ` Steve.Glendinning
@ 2006-08-01 23:51 ` Scott Murray
2006-08-03 15:26 ` Steve.Glendinning
0 siblings, 1 reply; 20+ messages in thread
From: Scott Murray @ 2006-08-01 23:51 UTC (permalink / raw)
To: Steve.Glendinning
Cc: Bahadir Balban, ian.saturley, netdev, Francois Romieu,
Stephen Hemminger
On Tue, 1 Aug 2006, Steve.Glendinning@smsc.com wrote:
> Hi Scott
>
>> Sorry to be coming in late, but I'm curious about why this work is being
>> submitted as a separate driver, rather than as patches against the
> driver
>> from Dustin McIntire that was added a few months ago. Is the intention
> to
>> go forward with two different drivers for these chips?
>
> I was waiting for someone to ask this!
>
> This driver has been developed by SMSC & ARM, and has several advantages
> over the already merged smc911x:
>
> - The current driver is arm specific, our smsc911x driver is tested and
> supported on arm, sh, i386
> - smsc911x contains support for the new LAN921x family, as well as LAN911x
> - smsc911x contains important workarounds for currently known hardware
> issues
> - It's shorted, and I believe the coding style to be cleaner and easier to
> follow.
>
> so I'm presenting this as an alternative. Thoughts?
I think the main concern that my co-workers here at SOMA Networks and I
have is that having two drivers dilutes the community effort. There's
also the fact that smc911x seems to have DMA support, which smsc911x does
not. Unless there are plans to enhance smsc911x with DMA support, it
would seem to me to make more sense to apply the LAN921x support and
hardware workaround changes to smc911x.
Scott
--
==============================================================================
Scott Murray, scott@spiteful.org
"Good, bad ... I'm the guy with the gun." - Ash, "Army of Darkness"
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH] SMSC LAN911x and LAN921x vendor driver
2006-08-01 15:33 ` John W. Linville
@ 2006-08-02 19:23 ` Steve.Glendinning
2006-08-02 19:51 ` John W. Linville
0 siblings, 1 reply; 20+ messages in thread
From: Steve.Glendinning @ 2006-08-02 19:23 UTC (permalink / raw)
To: John W. Linville
Cc: Bahadir Balban, ian.saturley, netdev, Francois Romieu,
Stephen Hemminger
Hi John,
Thanks for all your feedback.
> > +/* waits for MAC not busy, with timeout. Assumes MacPhyAccessLock
has
> > + * already been acquired */
> > +static int smsc911x_mac_notbusy(struct smsc911x_data *pdata)
> > +{
> > + int i;
> > +
> > + for (i = 0; i < 40; i++) {
> > + if ((smsc911x_reg_read(pdata,
MAC_CSR_CMD)
> > + & MAC_CSR_CMD_CSR_BUSY_) == 0) {
> > + return 1;
> > + }
> > + }
> > + SMSC_WARNING("Timed out waiting for MAC not BUSY. "
> > + "MAC_CSR_CMD: 0x%08X",
smsc911x_reg_read(pdata,
> > + MAC_CSR_CMD));
> > + return 0;
> > +}
>
> How is the length of this timeout controlled? IOW, what prevents
> it from being too short when the Omegatron 128 running at 10GHz hits
> the market? Are you relying on the MII clock rate?
The LAN911x and LAN921x devices uses an SRAM-like bus interface with a
minimum cycle time of 45ns, so smsc_reg_read() and smsc_reg_write() are
guaranteed to take at least 45ns. The MAC operates a little slower, but
the operation shouldn't take longer than 225ns (5 read cycles).
The PHY is accessed via slave registers in the MAC (which then relays the
command over mii), so its timeout works in the same way.
The timeouts are only there to prevent total lockup if the hardware fails,
if the part is working it should take nowhere near 40 iterations.
> > + /* Auto-detect PHY */
> > + for (address = 0; address <= 31;
address++) {
> > + pdata->phy_address =
address;
> > + phyid1 =
smsc911x_phy_read(pdata, MII_PHYSID1);
> > + phyid2 =
smsc911x_phy_read(pdata, MII_PHYSID2);
> > + if ((phyid1 != 0xFFFFU)
|| (phyid2 != 0xFFFFU)) {
> > + SMSC_TRACE("Detected PHY at address = "
> > + "0x%02X = %d", address, address);
> > + break;
> > + }
> > + }
>
> Does this need the magic "for (addr=1; addr <=32; addr++)" trick that
> has become idiomatic for PHY discovery in our drivers?
I don't understand the question - surely 32 is not a valid PHY address?
> > +/* SMSC911x registers and bitfields */
> > +#define RX_DATA_FIFO 0x00
> > +
> > +#define TX_DATA_FIFO 0x20
> > +#define TX_CMD_A_ON_COMP_ 0x80000000
> > +#define TX_CMD_A_BUF_END_ALGN_ 0x03000000
> > +#define TX_CMD_A_4_BYTE_ALGN_ 0x00000000
> > +#define TX_CMD_A_16_BYTE_ALGN_ 0x01000000
> > +#define TX_CMD_A_32_BYTE_ALGN_ 0x02000000
> > +#define TX_CMD_A_DATA_OFFSET_ 0x001F0000
> > +#define TX_CMD_A_FIRST_SEG_ 0x00002000
> > +#define TX_CMD_A_LAST_SEG_ 0x00001000
> > +#define TX_CMD_A_BUF_SIZE_ 0x000007FF
> > +#define TX_CMD_B_PKT_TAG_ 0xFFFF0000
> > +#define TX_CMD_B_ADD_CRC_DISABLE_ 0x00002000
> > +#define TX_CMD_B_DISABLE_PADDING_ 0x00001000
> > +#define TX_CMD_B_PKT_BYTE_LENGTH_ 0x000007FF
>
> Looks like something went haywire w/ your tabbing in this file...?
Its just the "+ " in the patch, once applied it looks quite pretty!
Best Regards,
--
Steve Glendinning
SMSC GmbH
m: +44 777 933 9124
e: steve.glendinning@smsc.com
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH] SMSC LAN911x and LAN921x vendor driver
2006-08-01 21:40 ` Francois Romieu
@ 2006-08-02 19:39 ` Steve.Glendinning
2006-08-02 21:07 ` Francois Romieu
0 siblings, 1 reply; 20+ messages in thread
From: Steve.Glendinning @ 2006-08-02 19:39 UTC (permalink / raw)
To: Francois Romieu; +Cc: Bahadir Balban, ian.saturley, netdev, Stephen Hemminger
Hi Francois,
Thanks again for all your feedback. I have implemented most of your
suggestions,
> > /* Enable phy clocks to the MAC */
> > hwcfg &= (~HW_CFG_PHY_CLK_SEL_);
> > hwcfg |= HW_CFG_PHY_CLK_SEL_EXT_PHY_;
> > smsc911x_reg_write(hwcfg, pdata, HW_CFG);
> > udelay(10); /* Enough time
for clocks to restart */
>
> (back to my original question that I should have reworded in a different
> thread)
>
> Does the platform guarantees that the register write has actually
reached
> the real register when the udelay is issued ?
I think so, but maybe you can help me check. The LAN911x device is always
directly connected to a simple SRAM-like host bus, and smsc911x_reg_write
is implemented using readl. Does this implicitly guarantee it to be
volatile?
> >
> > if (!pdata->software_irq_signal) {
> > printk(KERN_WARNING "%s: ISR failed
signaling test (IRQ %d)\n",
> > dev->name, dev->irq);
> > return -ENODEV;
> > }
> > SMSC_TRACE("IRQ handler passed test using IRQ %d",
dev->irq);
> >
> > printk(KERN_INFO "%s: SMSC911x/921x identified at %#08lx,
IRQ: %d\n",
> > dev->name, (unsigned long)pdata->ioaddr,
dev->irq);
> >
> > spin_lock_irqsave(&pdata->phy_lock, flags);
>
> flags useless: ->open() is issued in irq-enabled context.
How do you mean? I thought an irq-enabled context meant i DO have to
disable irqs?
> > unsigned long flags;
> >
> > SMSC_TRACE("ioctl cmd 0x%x", cmd);
> > switch (cmd) {
> > case SIOCGMIIPHY:
> > case SIOCDEVPRIVATE:
>
> The SIOCDEVPRIVATE can/should be removed.
I have removed these, they were only in as a quick fix because mii-tool
here sends SIOCDEVPRIVATE instead of SIOCGMIIPHY. I fixed my copy of
mii-tool instead :o)
Best Regards,
--
Steve Glendinning
SMSC GmbH
m: +44 777 933 9124
e: steve.glendinning@smsc.com
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH] SMSC LAN911x and LAN921x vendor driver
2006-08-02 19:23 ` Steve.Glendinning
@ 2006-08-02 19:51 ` John W. Linville
0 siblings, 0 replies; 20+ messages in thread
From: John W. Linville @ 2006-08-02 19:51 UTC (permalink / raw)
To: Steve.Glendinning
Cc: Bahadir Balban, ian.saturley, netdev, Francois Romieu,
Stephen Hemminger
On Wed, Aug 02, 2006 at 08:23:40PM +0100, Steve.Glendinning@smsc.com wrote:
> > Does this need the magic "for (addr=1; addr <=32; addr++)" trick that
> > has become idiomatic for PHY discovery in our drivers?
>
> I don't understand the question - surely 32 is not a valid PHY address?
That's why it is magic! :-)
The idea is to probe PHY addr 0 last in the series. Apparently some
PHYs don't like seeing addr 0 or somesuch, so you try it last to avoid
screwing them up. It may well be folklore and legend at this point.
Still, you will find several examples in the various drivers.
The sundance driver is one example.
John
--
John W. Linville
linville@tuxdriver.com
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH] SMSC LAN911x and LAN921x vendor driver
2006-08-02 19:39 ` Steve.Glendinning
@ 2006-08-02 21:07 ` Francois Romieu
2006-08-04 11:29 ` Steve Glendinning
0 siblings, 1 reply; 20+ messages in thread
From: Francois Romieu @ 2006-08-02 21:07 UTC (permalink / raw)
To: Steve.Glendinning; +Cc: Bahadir Balban, ian.saturley, netdev, Stephen Hemminger
Steve.Glendinning@smsc.com <Steve.Glendinning@smsc.com> :
> Mezigues :
[...]
> > Does the platform guarantees that the register write has actually
> reached
> > the real register when the udelay is issued ?
>
> I think so, but maybe you can help me check. The LAN911x device is always
> directly connected to a simple SRAM-like host bus, and smsc911x_reg_write
> is implemented using readl. Does this implicitly guarantee it to be
> volatile?
(s/readl/writel/)
It's probably safe if it's non-cached SRAM like but I strongly suggest to
read Documentation/DocBook/deviceiobook.tmpl. It explains better than me.
[...]
> > > spin_lock_irqsave(&pdata->phy_lock, flags);
> >
> > flags useless: ->open() is issued in irq-enabled context.
>
> How do you mean? I thought an irq-enabled context meant i DO have to
> disable irqs?
Yes but you can disable unconditionally and later enable unconditionnally
because you know that the irq are _always_ enabled before the lock (in
->open()).
'flags' saves the state. If the state is constant, you can either:
- s/spin_{lock_irqsave/unlock_irqrestore}/spin_{lock/unlock}_irq/
(irq always on before the lock)
or:
- s/spin_{lock_irqsave/unlock_irqrestore}/spin_{lock/unlock}/
(irq always off before the lock)
--
Ueimor
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH] SMSC LAN911x and LAN921x vendor driver
2006-08-01 23:51 ` Scott Murray
@ 2006-08-03 15:26 ` Steve.Glendinning
2006-08-03 21:07 ` Scott Murray
0 siblings, 1 reply; 20+ messages in thread
From: Steve.Glendinning @ 2006-08-03 15:26 UTC (permalink / raw)
To: Scott Murray
Cc: Bahadir Balban, ian.saturley, netdev, Francois Romieu,
Stephen Hemminger
Hi Scott,
> I think the main concern that my co-workers here at SOMA Networks
> and I have is that having two drivers dilutes the community effort.
> There's also the fact that smc911x seems to have DMA support, which
> smsc911x does not. Unless there are plans to enhance smsc911x with
> DMA support, it would seem to me to make more sense to apply the
> LAN921x support and hardware workaround changes to smc911x.
I have kept this driver simple for now, focussing on stable support for
multiple platforms. While arm is certainly popular, we also have a large
number of customers on sh, x86 and others, and currently there is no
in-kernel support (DMA or not) for these people.
Many of our customers use our proprietary drivers (which support DMA on
many platforms), and we would like to migrate them over to a standard
in-kernel driver - it would make support easier and everyone can benefit
from ongoing driver improvements. The DMA code within these proprietary
drivers is the next target for submission, although I would like to defer
additional complexity until we are all happy with the current PIO-only
implementation.
Regards,
--
Steve Glendinning
SMSC GmbH
m: +44 777 933 9124
e: steve.glendinning@smsc.com
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [PATCH] SMSC LAN911x and LAN921x vendor driver
2006-08-03 15:26 ` Steve.Glendinning
@ 2006-08-03 21:07 ` Scott Murray
0 siblings, 0 replies; 20+ messages in thread
From: Scott Murray @ 2006-08-03 21:07 UTC (permalink / raw)
To: Steve.Glendinning
Cc: Scott Murray, Bahadir Balban, ian.saturley, netdev,
Francois Romieu, Stephen Hemminger
On Thu, 3 Aug 2006, Steve.Glendinning@smsc.com wrote:
> Hi Scott,
>
>> I think the main concern that my co-workers here at SOMA Networks
>> and I have is that having two drivers dilutes the community effort.
>> There's also the fact that smc911x seems to have DMA support, which
>> smsc911x does not. Unless there are plans to enhance smsc911x with
>> DMA support, it would seem to me to make more sense to apply the
>> LAN921x support and hardware workaround changes to smc911x.
>
> I have kept this driver simple for now, focussing on stable support for
> multiple platforms. While arm is certainly popular, we also have a large
> number of customers on sh, x86 and others, and currently there is no
> in-kernel support (DMA or not) for these people.
>
> Many of our customers use our proprietary drivers (which support DMA on
> many platforms), and we would like to migrate them over to a standard
> in-kernel driver - it would make support easier and everyone can benefit
> from ongoing driver improvements. The DMA code within these proprietary
> drivers is the next target for submission, although I would like to defer
> additional complexity until we are all happy with the current PIO-only
> implementation.
Okay, I guess I'll shut up. We're going to stick with smc911x for now
and will probably submit some patches to it in the near future. If
smsc911x gets accepted into mainline by Jeff and gains DMA support, we
may reconsider.
Scott
--
==============================================================================
Scott Murray, scott@spiteful.org
"Good, bad ... I'm the guy with the gun." - Ash, "Army of Darkness"
^ permalink raw reply [flat|nested] 20+ messages in thread
* [PATCH] SMSC LAN911x and LAN921x vendor driver
2006-08-02 21:07 ` Francois Romieu
@ 2006-08-04 11:29 ` Steve Glendinning
0 siblings, 0 replies; 20+ messages in thread
From: Steve Glendinning @ 2006-08-04 11:29 UTC (permalink / raw)
To: netdev
Cc: Ian Saturley, Bahadir Balban, Stephen Hemminger, Francois Romieu,
bilgehan.balban, Steve Glendinning
> > > Attached is a driver patch for SMSC911x family of ethernet chips,
> > > generated against 2.6.18-rc1 sources. There's a similar driver in the
> > > tree; this one has been tested by SMSC on all flavors of the chip and
> > > claimed to be efficient.
> >
> > Updated after feedback from Stephen Hemminger.
>
> Improvements following feedback from Stephen Hemminger and Francois Romieu
Updated after additional feedback from netdev list:
- added ethtool support
- simplified phy code using generic mii library
Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com>
---
drivers/net/Kconfig | 13
drivers/net/Makefile | 1
drivers/net/smsc911x.c | 2035 ++++++++++++++++++++++++++++++++++++++++++++++++
drivers/net/smsc911x.h | 445 ++++++++++
4 files changed, 2494 insertions(+), 0 deletions(-)
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 3918990..fe835e5 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -865,6 +865,19 @@ config NET_NETX
<file:Documentation/networking/net-modules.txt>. The module
will be called netx-eth.
+config SMSC911X
+ tristate "SMSC LAN911x/LAN921x families embedded ethernet support"
+ depends on NET_ETHERNET
+ select CRC32
+ select MII
+ ---help---
+ Say Y here if you want support for SMSC LAN911x and LAN921x families
+ of ethernet controllers.
+
+ To compile this driver as a module, choose M here and read
+ <file:Documentation/networking/net-modules.txt>. The module
+ will be called smsc911x.
+
config DM9000
tristate "DM9000 support"
depends on (ARM || MIPS) && NET_ETHERNET
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index c91e951..51f680b 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -196,6 +196,7 @@ obj-$(CONFIG_S2IO) += s2io.o
obj-$(CONFIG_MYRI10GE) += myri10ge/
obj-$(CONFIG_SMC91X) += smc91x.o
obj-$(CONFIG_SMC911X) += smc911x.o
+obj-$(CONFIG_SMSC911X) += smsc911x.o
obj-$(CONFIG_DM9000) += dm9000.o
obj-$(CONFIG_FEC_8XX) += fec_8xx/
diff --git a/drivers/net/smsc911x.c b/drivers/net/smsc911x.c
new file mode 100644
index 0000000..c8db131
--- /dev/null
+++ b/drivers/net/smsc911x.c
@@ -0,0 +1,2035 @@
+/***************************************************************************
+ *
+ * Copyright (C) 2004-2005 SMSC
+ * Copyright (C) 2005 ARM
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ ***************************************************************************
+ * Rewritten, heavily based on smsc911x simple driver by SMSC.
+ * Partly uses io macros from smc91x.c by Nicolas Pitre
+ *
+ * Supported devices:
+ * LAN9115, LAN9116, LAN9117, LAN9118
+ * LAN9215, LAN9216, LAN9217, LAN9218
+ *
+ * History:
+ * 05/05/2005 bahadir.balban@arm.com
+ * - Transition to linux coding style
+ * - Platform driver and module interface
+ *
+ * 17/07/2006 steve.glendinning@smsc.com
+ * - Added support for LAN921x family
+ * - Added workaround for multicast filters
+ *
+ * 31/07/2006 steve.glendinning@smsc.com
+ * - Removed tasklet, using NAPI poll instead
+ * - Multiple device support
+ * - Large tidy-up following feedback from netdev list
+ *
+ * 03/08/2006 steve.glendinning@smsc.com
+ * - Added ethtool support
+ * - Convert to use generic MII interface
+ *
+ * 04/08/2006 bahadir.balban@arm.com
+ * - Added ethtool eeprom r/w support
+ */
+
+#include <linux/config.h>
+#include <linux/crc32.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/mii.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/platform_device.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/timer.h>
+#include <linux/version.h>
+#include <asm/bug.h>
+#include <asm/bitops.h>
+#include <asm/dma.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+#include "smsc911x.h"
+
+#define SMSC_CHIPNAME "smsc911x"
+#define SMSC_DRV_VERSION "2006-08-04"
+
+MODULE_LICENSE("GPL");
+
+/* Writes a packet to the TX_DATA_FIFO */
+static inline void
+smsc911x_tx_writefifo(struct smsc911x_data *pdata, unsigned int *buf,
+ unsigned int wordcount)
+{
+ while (wordcount--)
+ smsc911x_reg_write(*buf++, pdata, TX_DATA_FIFO);
+}
+
+/* Reads a packet out of the RX_DATA_FIFO */
+static inline void
+smsc911x_rx_readfifo(struct smsc911x_data *pdata, unsigned int *buf,
+ unsigned int wordcount)
+{
+ while (wordcount--)
+ *buf++ = smsc911x_reg_read(pdata, RX_DATA_FIFO);
+}
+
+/* waits for MAC not busy, with timeout. Only called by smsc911x_mac_read
+ * and smsc911x_mac_write, so assumes phy_lock is held */
+static int smsc911x_mac_notbusy(struct smsc911x_data *pdata)
+{
+ int i;
+ u32 val;
+
+ for (i = 0; i < 40; i++) {
+ val = smsc911x_reg_read(pdata, MAC_CSR_CMD);
+ if (!(val & MAC_CSR_CMD_CSR_BUSY_))
+ return 1;
+ }
+ SMSC_WARNING("Timed out waiting for MAC not BUSY. "
+ "MAC_CSR_CMD: 0x%08X", val);
+ return 0;
+}
+
+/* Fetches a MAC register value. Assumes phy_lock is acquired */
+static u32 smsc911x_mac_read(struct smsc911x_data *pdata, unsigned int offset)
+{
+ unsigned int temp;
+
+#ifdef CONFIG_DEBUG_SPINLOCK
+ if (!spin_is_locked(&pdata->phy_lock))
+ SMSC_WARNING("phy_lock not held");
+#endif /* CONFIG_DEBUG_SPINLOCK */
+
+ temp = smsc911x_reg_read(pdata, MAC_CSR_CMD);
+ if (unlikely(temp & MAC_CSR_CMD_CSR_BUSY_)) {
+ SMSC_WARNING("smsc911x_mac_read failed, MAC busy at entry");
+ return 0xFFFFFFFF;
+ }
+
+ /* Send the MAC cmd */
+ smsc911x_reg_write(((offset & 0xFF) | MAC_CSR_CMD_CSR_BUSY_
+ | MAC_CSR_CMD_R_NOT_W_), pdata, MAC_CSR_CMD);
+
+ /* Workaround for hardware read-after-write restriction */
+ temp = smsc911x_reg_read(pdata, BYTE_TEST);
+
+ /* Wait for the read to happen */
+ if (likely(smsc911x_mac_notbusy(pdata)))
+ return smsc911x_reg_read(pdata, MAC_CSR_DATA);
+
+ SMSC_WARNING("smsc911x_mac_read failed, MAC busy after read");
+ return 0xFFFFFFFF;
+}
+
+/* Set a mac register, phy_lock must be acquired before calling */
+static void smsc911x_mac_write(struct smsc911x_data *pdata,
+ unsigned int offset, u32 val)
+{
+ unsigned int temp;
+
+#ifdef CONFIG_DEBUG_SPINLOCK
+ if (!spin_is_locked(&pdata->phy_lock))
+ SMSC_WARNING("phy_lock not held");
+#endif /* CONFIG_DEBUG_SPINLOCK */
+
+ temp = smsc911x_reg_read(pdata, MAC_CSR_CMD);
+ if (unlikely(temp & MAC_CSR_CMD_CSR_BUSY_)) {
+ SMSC_WARNING("smsc911x_mac_write failed, MAC busy at entry");
+ return;
+ }
+
+ /* Send data to write */
+ smsc911x_reg_write(val, pdata, MAC_CSR_DATA);
+
+ /* Write the actual data */
+ smsc911x_reg_write(((offset & 0xFF) | MAC_CSR_CMD_CSR_BUSY_), pdata,
+ MAC_CSR_CMD);
+
+ /* Workaround for hardware read-after-write restriction */
+ temp = smsc911x_reg_read(pdata, BYTE_TEST);
+
+ /* Wait for the write to complete */
+ if (likely(smsc911x_mac_notbusy(pdata)))
+ return;
+
+ SMSC_WARNING("smsc911x_mac_write failed, MAC busy after write");
+}
+
+/* Gets a phy register, phy_lock must be acquired before calling */
+static u16 smsc911x_phy_read(struct smsc911x_data *pdata, unsigned int index)
+{
+ unsigned int addr;
+ int i;
+
+#ifdef CONFIG_DEBUG_SPINLOCK
+ if (!spin_is_locked(&pdata->phy_lock))
+ SMSC_WARNING("phy_lock not held");
+#endif /* CONFIG_DEBUG_SPINLOCK */
+
+ /* Confirm MII not busy */
+ if (unlikely(smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_)) {
+ SMSC_WARNING("MII is busy in smsc911x_phy_read???");
+ return 0;
+ }
+
+ /* Set the address, index & direction (read from PHY) */
+ addr = (((pdata->mii.phy_id) & 0x1F) << 11)
+ | ((index & 0x1F) << 6);
+ smsc911x_mac_write(pdata, MII_ACC, addr);
+
+ /* Wait for read to complete w/ timeout */
+ for (i = 0; i < 100; i++) {
+ /* See if MII is finished yet */
+ if (!(smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_)) {
+ return smsc911x_mac_read(pdata, MII_DATA);
+ }
+ }
+ SMSC_WARNING("Timed out waiting for MII write to finish");
+ return 0xFFFF;
+}
+
+/* Sets a phy register, phy_lock must be acquired before calling */
+static void smsc911x_phy_write(struct smsc911x_data *pdata,
+ unsigned int index, u16 val)
+{
+ unsigned int addr;
+ int i;
+
+#ifdef CONFIG_DEBUG_SPINLOCK
+ if (!spin_is_locked(&pdata->phy_lock))
+ SMSC_WARNING("phy_lock not held");
+#endif /* CONFIG_DEBUG_SPINLOCK */
+
+ /* Confirm MII not busy */
+ if (unlikely(smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_)) {
+ SMSC_WARNING("MII is busy in smsc911x_write_phy???");
+ return;
+ }
+
+ /* Put the data to write in the MAC */
+ smsc911x_mac_write(pdata, MII_DATA, val);
+
+ /* Set the address, index & direction (write to PHY) */
+ addr = (((pdata->mii.phy_id) & 0x1F) << 11) |
+ ((index & 0x1F) << 6) | MII_ACC_MII_WRITE_;
+ smsc911x_mac_write(pdata, MII_ACC, addr);
+
+ /* Wait for write to complete w/ timeout */
+ for (i = 0; i < 100; i++) {
+ /* See if MII is finished yet */
+ if (!(smsc911x_mac_read(pdata, MII_ACC) & MII_ACC_MII_BUSY_))
+ return;
+ }
+ SMSC_WARNING("Timed out waiting for MII write to finish");
+}
+
+static int smsc911x_mdio_read(struct net_device *dev, int phy_id, int location)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ unsigned long flags;
+ int reg;
+
+ spin_lock_irqsave(&pdata->phy_lock, flags);
+ reg = smsc911x_phy_read(pdata, location);
+ spin_unlock_irqrestore(&pdata->phy_lock, flags);
+
+ return reg;
+}
+
+static void smsc911x_mdio_write(struct net_device *dev, int phy_id,
+ int location, int val)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ unsigned long flags;
+
+ spin_lock_irqsave(&pdata->phy_lock, flags);
+ smsc911x_phy_write(pdata, location, val);
+ spin_unlock_irqrestore(&pdata->phy_lock, flags);
+}
+
+/* Autodetects and initialises external phy for SMSC9115 and SMSC9117 flavors.
+ * If something goes wrong, returns -ENODEV to revert back to internal phy.
+ * Performed at initialisation only, so interrupts are enabled */
+static int smsc911x_phy_initialise_external(struct smsc911x_data *pdata)
+{
+ unsigned int address;
+ unsigned int hwcfg;
+ unsigned int phyid1;
+ unsigned int phyid2;
+
+ hwcfg = smsc911x_reg_read(pdata, HW_CFG);
+
+ /* External phy is requested, supported, and detected */
+ if (hwcfg & HW_CFG_EXT_PHY_DET_) {
+
+ /* Attempt to switch to external phy for auto-detecting
+ * its address. Assuming tx and rx are stopped because
+ * smsc911x_phy_initialise is called before
+ * smsc911x_rx_initialise and tx_initialise.
+ */
+
+ /* Disable phy clocks to the MAC */
+ hwcfg &= (~HW_CFG_PHY_CLK_SEL_);
+ hwcfg |= HW_CFG_PHY_CLK_SEL_CLK_DIS_;
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+ udelay(10); /* Enough time for clocks to stop */
+
+ /* Switch to external phy */
+ hwcfg |= HW_CFG_EXT_PHY_EN_;
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+
+ /* Enable phy clocks to the MAC */
+ hwcfg &= (~HW_CFG_PHY_CLK_SEL_);
+ hwcfg |= HW_CFG_PHY_CLK_SEL_EXT_PHY_;
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+ udelay(10); /* Enough time for clocks to restart */
+
+ hwcfg |= HW_CFG_SMI_SEL_;
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+
+ /* Auto-detect PHY */
+ spin_lock_irq(&pdata->phy_lock);
+ for (address = 0; address <= 31; address++) {
+ pdata->mii.phy_id = address;
+ phyid1 = smsc911x_phy_read(pdata, MII_PHYSID1);
+ phyid2 = smsc911x_phy_read(pdata, MII_PHYSID2);
+ if ((phyid1 != 0xFFFFU) || (phyid2 != 0xFFFFU)) {
+ SMSC_TRACE("Detected PHY at address = "
+ "0x%02X = %d", address, address);
+ break;
+ }
+ }
+ spin_unlock_irq(&pdata->phy_lock);
+
+ if ((phyid1 == 0xFFFFU) && (phyid2 == 0xFFFFU)) {
+ SMSC_WARNING("External PHY is not accessable, "
+ "using internal PHY instead");
+ /* Revert back to internal phy settings. */
+
+ /* Disable phy clocks to the MAC */
+ hwcfg &= (~HW_CFG_PHY_CLK_SEL_);
+ hwcfg |= HW_CFG_PHY_CLK_SEL_CLK_DIS_;
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+ udelay(10); /* Enough time for clocks to stop */
+
+ /* Switch to internal phy */
+ hwcfg &= (~HW_CFG_EXT_PHY_EN_);
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+
+ /* Enable phy clocks to the MAC */
+ hwcfg &= (~HW_CFG_PHY_CLK_SEL_);
+ hwcfg |= HW_CFG_PHY_CLK_SEL_INT_PHY_;
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+ udelay(10); /* Enough time for clocks to restart */
+
+ hwcfg &= (~HW_CFG_SMI_SEL_);
+ smsc911x_reg_write(hwcfg, pdata, HW_CFG);
+ /* Use internal phy */
+ return -ENODEV;
+ } else {
+ SMSC_TRACE("Successfully switched to external PHY");
+ pdata->using_extphy = 1;
+ }
+ } else {
+ SMSC_WARNING("No external PHY detected.");
+ SMSC_WARNING("Using internal PHY instead.");
+ /* Use internal phy */
+ return -ENODEV;
+ }
+ return 0;
+}
+
+/* called by phy_initialise and loopback test */
+static int smsc911x_phy_reset(struct smsc911x_data *pdata)
+{
+ unsigned int temp;
+ unsigned int i = 100000;
+ unsigned long flags;
+
+ SMSC_TRACE("Performing PHY BCR Reset");
+ spin_lock_irqsave(&pdata->phy_lock, flags);
+ smsc911x_phy_write(pdata, MII_BMCR, BMCR_RESET);
+ do {
+ udelay(10);
+ temp = smsc911x_phy_read(pdata, MII_BMCR);
+ } while ((i--) && (temp & BMCR_RESET));
+ spin_unlock_irqrestore(&pdata->phy_lock, flags);
+
+ if (temp & BMCR_RESET) {
+ SMSC_WARNING("PHY reset failed to complete.");
+ return 0;
+ }
+ /* Extra delay required because the phy may not be completed with
+ * its reset when BMCR_RESET is cleared. Specs say 256 uS is
+ * enough delay but using 500 here to be safe
+ */
+ msleep(500);
+
+ return 1;
+}
+
+/* Fetches a tx status out of the status fifo */
+static unsigned int smsc911x_tx_get_txstatus(struct smsc911x_data *pdata)
+{
+ unsigned int result =
+ smsc911x_reg_read(pdata, TX_FIFO_INF) & TX_FIFO_INF_TSUSED_;
+
+ if (result != 0)
+ result = smsc911x_reg_read(pdata, TX_STATUS_FIFO);
+
+ return result;
+}
+
+/* Fetches the next rx status */
+static unsigned int smsc911x_rx_get_rxstatus(struct smsc911x_data *pdata)
+{
+ unsigned int result =
+ smsc911x_reg_read(pdata, RX_FIFO_INF) & RX_FIFO_INF_RXSUSED_;
+
+ if (result != 0)
+ result = smsc911x_reg_read(pdata, RX_STATUS_FIFO);
+
+ return result;
+}
+
+#ifdef USE_PHY_WORK_AROUND
+static int smsc911x_phy_check_loopbackpkt(struct smsc911x_data *pdata)
+{
+ unsigned int tries;
+ u32 wrsz;
+ u32 rdsz;
+ u32 bufp;
+
+ for (tries = 0; tries < 10; tries++) {
+ unsigned int txcmd_a;
+ unsigned int txcmd_b;
+ unsigned int status;
+ unsigned int pktlength;
+ unsigned int i;
+
+ /* Zero-out rx packet memory */
+ memset(pdata->loopback_rx_pkt, 0, MIN_PACKET_SIZE);
+
+ /* Write tx packet to 118 */
+ txcmd_a = (((unsigned int)pdata->loopback_tx_pkt)
+ & 0x03) << 16;
+ txcmd_a |= TX_CMD_A_FIRST_SEG_ | TX_CMD_A_LAST_SEG_;
+ txcmd_a |= MIN_PACKET_SIZE;
+
+ txcmd_b = MIN_PACKET_SIZE << 16 | MIN_PACKET_SIZE;
+
+ smsc911x_reg_write(txcmd_a, pdata, TX_DATA_FIFO);
+ smsc911x_reg_write(txcmd_b, pdata, TX_DATA_FIFO);
+
+ bufp = ((u32) pdata->loopback_tx_pkt) & 0xFFFFFFFC;
+ wrsz = MIN_PACKET_SIZE + 3;
+ wrsz += (((u32) pdata->loopback_tx_pkt) & 0x3);
+ wrsz >>= 2;
+
+ smsc911x_tx_writefifo(pdata, (unsigned int *)bufp, wrsz);
+
+ /* Wait till transmit is done */
+ i = 60;
+ do {
+ udelay(5);
+ status = smsc911x_tx_get_txstatus(pdata);
+ } while ((i--) && (!status));
+
+ if (!status) {
+ SMSC_WARNING("Failed to transmit during loopback test");
+ continue;
+ }
+ if (status & TX_STS_ES_) {
+ SMSC_WARNING("Transmit encountered errors during "
+ "loopback test");
+ continue;
+ }
+
+ /* Wait till receive is done */
+ i = 60;
+ do {
+ udelay(5);
+ status = smsc911x_rx_get_rxstatus(pdata);
+ } while ((i--) && (!status));
+
+ if (!status) {
+ SMSC_WARNING("Failed to receive during loopback test");
+ continue;
+ }
+ if (status & RX_STS_ES_) {
+ SMSC_WARNING("Receive encountered errors during "
+ "loopback test");
+ continue;
+ }
+
+ pktlength = ((status & 0x3FFF0000UL) >> 16);
+ bufp = (u32)pdata->loopback_rx_pkt;
+ rdsz = pktlength + 3;
+ rdsz += ((u32)pdata->loopback_rx_pkt) & 0x3;
+ rdsz >>= 2;
+
+ smsc911x_rx_readfifo(pdata, (unsigned int *)bufp, rdsz);
+
+ if (pktlength != (MIN_PACKET_SIZE + 4)) {
+ SMSC_WARNING("Unexpected packet size during "
+ "loop back test, size=%d, "
+ "will retry", pktlength);
+ } else {
+ unsigned int j;
+ int mismatch = 0;
+ for (j = 0; j < MIN_PACKET_SIZE; j++) {
+ if (pdata->loopback_tx_pkt[j]
+ != pdata->loopback_rx_pkt[j]) {
+ mismatch = 1;
+ break;
+ }
+ }
+ if (!mismatch) {
+ SMSC_TRACE("Successfully verified "
+ "loopback packet");
+ return 1;
+ } else {
+ SMSC_WARNING("Data miss match during "
+ "loop back test, will retry.");
+ }
+ }
+ }
+
+ return 0;
+}
+
+static int smsc911x_phy_loopbacktest(struct smsc911x_data *pdata)
+{
+ int result = 0;
+ unsigned int i;
+ unsigned int val;
+ unsigned long flags;
+
+ /* Initialise tx packet */
+ for (i = 0; i < 6; i++) {
+ /* Use broadcast destination address */
+ pdata->loopback_tx_pkt[i] = (char)0xFF;
+ }
+
+ for (i = 6; i < 12; i++) {
+ /* Use incrementing source address */
+ pdata->loopback_tx_pkt[i] = (char)i;
+ }
+
+ /* Set length type field */
+ pdata->loopback_tx_pkt[12] = 0x00;
+ pdata->loopback_tx_pkt[13] = 0x00;
+ for (i = 14; i < MIN_PACKET_SIZE; i++) {
+ pdata->loopback_tx_pkt[i] = (char)i;
+ }
+
+ val = smsc911x_reg_read(pdata, HW_CFG);
+ val &= HW_CFG_TX_FIF_SZ_;
+ val |= HW_CFG_SF_;
+ smsc911x_reg_write(val, pdata, HW_CFG);
+
+ smsc911x_reg_write(TX_CFG_TX_ON_, pdata, TX_CFG);
+ smsc911x_reg_write((((unsigned int)pdata->loopback_rx_pkt)
+ & 0x03) << 8, pdata, RX_CFG);
+
+ for (i = 0; i < 10; i++) {
+ /* Set PHY to 10/FD, no ANEG, and loopback mode */
+ spin_lock_irqsave(&pdata->phy_lock, flags);
+ smsc911x_phy_write(pdata, MII_BMCR, 0x4100);
+
+ /* Enable MAC tx/rx, FD */
+ smsc911x_mac_write(pdata, MAC_CR, MAC_CR_FDPX_
+ | MAC_CR_TXEN_ | MAC_CR_RXEN_);
+ spin_unlock_irqrestore(&pdata->phy_lock, flags);
+
+ if (smsc911x_phy_check_loopbackpkt(pdata)) {
+ result = 1;
+ break;
+ }
+ pdata->resetcount++;
+
+ /* Disable MAC rx */
+ spin_lock_irqsave(&pdata->phy_lock, flags);
+ smsc911x_mac_write(pdata, MAC_CR, 0);
+ spin_unlock_irqrestore(&pdata->phy_lock, flags);
+
+ smsc911x_phy_reset(pdata);
+ }
+
+ /* Disable MAC */
+ spin_lock_irqsave(&pdata->phy_lock, flags);
+ smsc911x_mac_write(pdata, MAC_CR, 0);
+
+ /* Cancel PHY loopback mode */
+ smsc911x_phy_write(pdata, MII_BMCR, 0);
+ spin_unlock_irqrestore(&pdata->phy_lock, flags);
+
+ smsc911x_reg_write(0, pdata, TX_CFG);
+ smsc911x_reg_write(0, pdata, RX_CFG);
+
+ return result;
+}
+#endif /* USE_PHY_WORK_AROUND */
+
+/* assumes phy_lock is held */
+static void smsc911x_phy_update_flowcontrol(struct smsc911x_data *pdata)
+{
+ unsigned int temp;
+
+ if (pdata->mii.full_duplex) {
+ unsigned int phy_adv;
+ unsigned int phy_lpa;
+ phy_adv = smsc911x_phy_read(pdata, MII_ADVERTISE);
+ phy_lpa = smsc911x_phy_read(pdata, MII_LPA);
+ if (phy_adv & phy_lpa & LPA_PAUSE_CAP) {
+ /* Both ends support symmetric pause, enable
+ * PAUSE receive and transmit */
+ smsc911x_mac_write(pdata, FLOW, 0xFFFF0002);
+ temp = smsc911x_reg_read(pdata, AFC_CFG);
+ temp |= 0xF;
+ smsc911x_reg_write(temp, pdata, AFC_CFG);
+ } else if (((phy_adv & ADVERTISE_PAUSE_ALL) ==
+ ADVERTISE_PAUSE_ALL) &&
+ ((phy_lpa & LPA_PAUSE_ALL) == LPA_PAUSE_ASYM)) {
+ /* We support symmetric and asym pause, the
+ * other end only supports asym, Enable PAUSE
+ * receive, disable PAUSE transmit */
+ smsc911x_mac_write(pdata, FLOW, 0xFFFF0002);
+ temp = smsc911x_reg_read(pdata, AFC_CFG);
+ temp &= ~0xF;
+ smsc911x_reg_write(temp, pdata, AFC_CFG);
+ } else {
+ /* Disable PAUSE receive and transmit */
+ smsc911x_mac_write(pdata, FLOW, 0);
+ temp = smsc911x_reg_read(pdata, AFC_CFG);
+ temp &= ~0xF;
+ smsc911x_reg_write(temp, pdata, AFC_CFG);
+ }
+ } else {
+ smsc911x_mac_write(pdata, FLOW, 0);
+ temp = smsc911x_reg_read(pdata, AFC_CFG);
+ temp |= 0xF;
+ smsc911x_reg_write(temp, pdata, AFC_CFG);
+ }
+}
+
+/* Update link mode if any thing has changed */
+static void smsc911x_phy_update_linkmode(struct net_device *dev, int init)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ unsigned long flags;
+
+ if (mii_check_media(&pdata->mii, netif_msg_link(pdata), init)) {
+ /* duplex state has changed */
+ unsigned int mac_cr;
+
+ spin_lock_irqsave(&pdata->phy_lock, flags);
+ mac_cr = smsc911x_mac_read(pdata, MAC_CR);
+ if (pdata->mii.full_duplex) {
+ SMSC_TRACE("configuring for full duplex mode");
+ mac_cr |= MAC_CR_FDPX_;
+ } else {
+ SMSC_TRACE("configuring for half duplex mode");
+ mac_cr &= ~MAC_CR_FDPX_;
+ }
+ smsc911x_mac_write(pdata, MAC_CR, mac_cr);
+
+ smsc911x_phy_update_flowcontrol(pdata);
+
+ spin_unlock_irqrestore(&pdata->phy_lock, flags);
+ }
+#ifdef USE_LED1_WORK_AROUND
+ if (netif_carrier_ok(dev)) {
+ if ((pdata->gpio_orig_setting & GPIO_CFG_LED1_EN_) &&
+ (!pdata->using_extphy)) {
+ /* Restore orginal GPIO configuration */
+ pdata->gpio_setting = pdata->gpio_orig_setting;
+ smsc911x_reg_write(pdata->gpio_setting, pdata,
+ GPIO_CFG);
+ }
+ } else {
+ /* Check global setting that LED1
+ * usage is 10/100 indicator */
+ pdata->gpio_setting = smsc911x_reg_read(pdata, GPIO_CFG);
+ if ((pdata->gpio_setting & GPIO_CFG_LED1_EN_)
+ && (!pdata->using_extphy)) {
+ /* Force 10/100 LED off, after saving
+ * orginal GPIO configuration */
+ pdata->gpio_orig_setting = pdata->gpio_setting;
+
+ pdata->gpio_setting &= ~GPIO_CFG_LED1_EN_;
+ pdata->gpio_setting |= (GPIO_CFG_GPIOBUF0_
+ | GPIO_CFG_GPIODIR0_
+ | GPIO_CFG_GPIOD0_);
+ smsc911x_reg_write(pdata->gpio_setting, pdata,
+ GPIO_CFG);
+ }
+ }
+#endif /* USE_LED1_WORK_AROUND */
+}
+
+/* Entry point for the link poller */
+static void smsc911x_phy_checklink(unsigned long ptr)
+{
+ struct net_device *dev = (struct net_device *)ptr;
+ struct smsc911x_data *pdata = netdev_priv(dev);
+
+ smsc911x_phy_update_linkmode(dev, 0);
+
+ if (!(pdata->stop_link_poll)) {
+ pdata->link_poll_timer.expires = jiffies + HZ;
+ add_timer(&(pdata->link_poll_timer));
+ }
+}
+
+/* Initialises the PHY layer. Called at initialisation by open() so
+ * interrupts are enabled */
+static int smsc911x_phy_initialise(struct net_device *dev)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ unsigned int phyid1 = 0;
+ unsigned int phyid2 = 0;
+ unsigned int temp;
+
+ pdata->using_extphy = 0;
+
+ switch (pdata->idrev & 0xFFFF0000) {
+ case 0x01170000:
+ case 0x01150000:
+ /* External PHY supported, try to autodetect */
+ if (smsc911x_phy_initialise_external(pdata) < 0) {
+ SMSC_TRACE("External PHY is not detected, using "
+ "internal PHY instead");
+ pdata->mii.phy_id = 1;
+ }
+ break;
+ default:
+ SMSC_TRACE("External PHY is not supported, using internal PHY "
+ "instead");
+ pdata->mii.phy_id = 1;
+ break;
+ }
+
+ spin_lock_irq(&pdata->phy_lock);
+ phyid1 = smsc911x_phy_read(pdata, MII_PHYSID1);
+ phyid2 = smsc911x_phy_read(pdata, MII_PHYSID2);
+ spin_unlock_irq(&pdata->phy_lock);
+
+ if ((phyid1 == 0xFFFF) && (phyid2 == 0xFFFF)) {
+ SMSC_WARNING("Internal PHY not detected!");
+ return 0;
+ }
+
+ /* Reset the phy */
+ if (!smsc911x_phy_reset(pdata)) {
+ SMSC_WARNING("PHY reset failed to complete.");
+ return 0;
+ }
+#ifdef USE_PHY_WORK_AROUND
+ if (!smsc911x_phy_loopbacktest(pdata)) {
+ SMSC_WARNING("Failed Loop Back Test");
+ return 0;
+ } else {
+ SMSC_TRACE("Passed Loop Back Test");
+ }
+#endif /* USE_PHY_WORK_AROUND */
+
+ /* Advertise all speeds and pause capabilities */
+ spin_lock_irq(&pdata->phy_lock);
+ temp = smsc911x_phy_read(pdata, MII_ADVERTISE);
+ temp |= (ADVERTISE_ALL | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
+ smsc911x_phy_write(pdata, MII_ADVERTISE, temp);
+ pdata->mii.advertising = temp;
+
+ if (!pdata->using_extphy) {
+ /* using internal phy, enable PHY interrupts */
+ smsc911x_phy_read(pdata, MII_INTSTS);
+ smsc911x_phy_write(pdata, MII_INTMSK, PHY_INTMSK_DEFAULT_);
+ }
+
+ /* begin to establish link */
+ smsc911x_phy_write(pdata, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
+ spin_unlock_irq(&pdata->phy_lock);
+
+ smsc911x_phy_update_linkmode(dev, 1);
+
+ init_timer(&pdata->link_poll_timer);
+ pdata->link_poll_timer.function = smsc911x_phy_checklink;
+ pdata->link_poll_timer.data = (unsigned long)dev;
+ pdata->link_poll_timer.expires = jiffies + HZ;
+ add_timer(&pdata->link_poll_timer);
+
+ SMSC_TRACE("phy initialised succesfully");
+ return 1;
+}
+
+/* Gets the number of tx statuses in the fifo */
+static unsigned int smsc911x_tx_get_txstatcount(struct smsc911x_data *pdata)
+{
+ unsigned int result = (smsc911x_reg_read(pdata, TX_FIFO_INF)
+ & TX_FIFO_INF_TSUSED_) >> 16;
+ return result;
+}
+
+/* Reads tx statuses and increments counters where necessary */
+static void smsc911x_tx_update_txcounters(struct smsc911x_data *pdata)
+{
+ unsigned int tx_stat;
+
+ while ((tx_stat = smsc911x_tx_get_txstatus(pdata)) != 0) {
+ if (unlikely(tx_stat & 0x80000000)) {
+ /* In this driver the packet tag is used as the packet length.
+ * Since a packet length can never reach the size of 0x8000,
+ * this bit is reserved so that if packet tracking tags were
+ * ever used, then those tracking tags would set the reserved bit.
+ * Accordingly, this control path would be used to look up the
+ * packet and perhaps free it. It is worth noting that the
+ * "reserved bit" in the warning above does not reference a
+ * hardware defined reserved bit but rather a driver defined one.
+ */
+ SMSC_WARNING("Packet tag reserved bit is high");
+ } else {
+ if (unlikely(tx_stat & 0x00008000)) {
+ pdata->stats.tx_errors++;
+ } else {
+ pdata->stats.tx_packets++;
+ pdata->stats.tx_bytes += (tx_stat >> 16);
+ }
+ if (unlikely(tx_stat & 0x00000100)) {
+ pdata->stats.collisions += 16;
+ pdata->stats.tx_aborted_errors += 1;
+ } else {
+ pdata->stats.collisions +=
+ ((tx_stat >> 3) & 0xF);
+ }
+ if (unlikely(tx_stat & 0x00000800)) {
+ pdata->stats.tx_carrier_errors += 1;
+ }
+ if (unlikely(tx_stat & 0x00000200)) {
+ pdata->stats.collisions++;
+ pdata->stats.tx_aborted_errors++;
+ }
+ }
+ }
+}
+
+/* Increments the Rx error counters */
+static void
+smsc911x_rx_counterrors(struct smsc911x_data *pdata, unsigned int rxstat)
+{
+ int crc_err = 0;
+
+ if (unlikely(rxstat & 0x00008000)) {
+ pdata->stats.rx_errors++;
+ if (unlikely(rxstat & 0x00000002)) {
+ pdata->stats.rx_crc_errors++;
+ crc_err = 1;
+ }
+ }
+ if (likely(!crc_err)) {
+ if (unlikely((rxstat & 0x00001020) == 0x00001020)) {
+ /* Frame type indicates length,
+ * and length error is set */
+ pdata->stats.rx_length_errors++;
+ }
+ if (rxstat & RX_STS_MCAST_)
+ pdata->stats.multicast++;
+ }
+}
+
+/* Quickly dumps bad packets */
+static void
+smsc911x_rx_fastforward(struct smsc911x_data *pdata, unsigned int count)
+{
+ unsigned int temp;
+
+ if (likely(count >= 4)) {
+ unsigned int timeout = 500;
+ unsigned int val;
+ smsc911x_reg_write(RX_DP_CTRL_RX_FFWD_, pdata, RX_DP_CTRL);
+ do {
+ udelay(1);
+ val = smsc911x_reg_read(pdata, RX_DP_CTRL);
+ } while (timeout-- && (val & RX_DP_CTRL_RX_FFWD_));
+
+ if (unlikely(timeout == 0))
+ SMSC_WARNING("Timed out waiting for RX FFWD "
+ "to finish, RX_DP_CTRL: 0x%08X", val);
+ } else {
+ while (count--)
+ temp = smsc911x_reg_read(pdata, RX_DATA_FIFO);
+ }
+}
+
+/* NAPI poll function */
+static int smsc911x_poll(struct net_device *dev, int *budget)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ int npackets = 0;
+ int quota = min(dev->quota, *budget);
+
+ while (npackets < quota) {
+ unsigned int pktlength;
+ unsigned int pktwords;
+ unsigned int rxstat = smsc911x_rx_get_rxstatus(pdata);
+
+ /* break out of while loop if there are no more packets waiting */
+ if (!rxstat)
+ break;
+
+ pktlength = ((rxstat & 0x3FFF0000) >> 16);
+ pktwords = (pktlength + NET_IP_ALIGN + 3) >> 2;
+ smsc911x_rx_counterrors(pdata, rxstat);
+
+ if (likely((rxstat & RX_STS_ES_) == 0)) {
+ struct sk_buff *skb;
+ skb = dev_alloc_skb(pktlength + NET_IP_ALIGN);
+ if (likely(skb)) {
+ skb->data = skb->head;
+ skb->tail = skb->head;
+ /* Align IP on 16B boundary */
+ skb_reserve(skb, NET_IP_ALIGN);
+ skb_put(skb, pktlength - 4);
+ smsc911x_rx_readfifo(pdata,
+ (unsigned int *)skb->head,
+ pktwords);
+ skb->dev = dev;
+ skb->protocol = eth_type_trans(skb, dev);
+ skb->ip_summed = CHECKSUM_NONE;
+ netif_receive_skb(skb);
+
+ /* Update counters */
+ pdata->stats.rx_packets++;
+ pdata->stats.rx_bytes += (pktlength - 4);
+ dev->last_rx = jiffies;
+ npackets++;
+ continue;
+ } else {
+ SMSC_WARNING("Unable to allocate sk_buff "
+ "for rx packet, in PIO path");
+ pdata->stats.rx_dropped++;
+ }
+ }
+ /* At this point, the packet is to be read out
+ * of the fifo and discarded */
+ smsc911x_rx_fastforward(pdata, pktwords);
+ }
+
+ pdata->stats.rx_dropped += smsc911x_reg_read(pdata, RX_DROP);
+ smsc911x_reg_write(INT_STS_RSFL_, pdata, INT_STS);
+
+ *budget -= npackets;
+ dev->quota -= npackets;
+
+ if (npackets < quota) {
+ unsigned int temp;
+ /* We processed all packets available. Tell NAPI it can
+ * stop polling then re-enable rx interrupts */
+ netif_rx_complete(dev);
+ temp = smsc911x_reg_read(pdata, INT_EN);
+ temp |= INT_EN_RSFL_EN_;
+ smsc911x_reg_write(temp, pdata, INT_EN);
+ return 0;
+ }
+
+ /* There are still packets waiting */
+ return 1;
+}
+
+/* Returns hash bit number for given MAC address
+ * Example:
+ * 01 00 5E 00 00 01 -> returns bit number 31 */
+static unsigned int smsc911x_hash(char addr[ETH_ALEN])
+{
+ unsigned int crc;
+ unsigned int result;
+
+ crc = ether_crc(ETH_ALEN, addr);
+ result = (crc >> 26) & 0x3f;
+
+ return result;
+}
+
+static void smsc911x_rx_multicast_update(struct smsc911x_data *pdata)
+{
+ /* Performs the multicast & mac_cr update. This is called when
+ * safe on the current hardware, and with the phy_lock held */
+ unsigned int mac_cr = smsc911x_mac_read(pdata, MAC_CR);
+ mac_cr |= pdata->set_bits_mask;
+ mac_cr &= ~(pdata->clear_bits_mask);
+ smsc911x_mac_write(pdata, MAC_CR, mac_cr);
+ smsc911x_mac_write(pdata, HASHH, pdata->hashhi);
+ smsc911x_mac_write(pdata, HASHL, pdata->hashlo);
+ SMSC_TRACE("maccr 0x%08X, HASHH 0x%08X, HASHL 0x%08X", mac_cr,
+ pdata->hashhi, pdata->hashlo);
+}
+
+static void smsc911x_rx_multicast_update_workaround(struct smsc911x_data *pdata)
+{
+ unsigned int mac_cr;
+
+ /* This function is only called for older LAN911x devices
+ * (revA or revB), where MAC_CR, HASHH and HASHL should not
+ * be modified during Rx - newer devices immediately update the
+ * registers.
+ *
+ * This is called from interrupt context */
+
+ spin_lock(&pdata->phy_lock);
+
+ /* Check Rx has stopped */
+ if (smsc911x_mac_read(pdata, MAC_CR) & MAC_CR_RXEN_)
+ SMSC_WARNING("Rx not stopped\n");
+
+ /* Perform the update - safe to do now Rx has stopped */
+ smsc911x_rx_multicast_update(pdata);
+
+ /* Re-enable Rx */
+ mac_cr = smsc911x_mac_read(pdata, MAC_CR);
+ mac_cr |= MAC_CR_RXEN_;
+ smsc911x_mac_write(pdata, MAC_CR, mac_cr);
+
+ pdata->multicast_update_pending = 0;
+
+ spin_unlock(&pdata->phy_lock);
+}
+
+static int smsc911x_open(struct net_device *dev)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ unsigned int mac_high16;
+ unsigned int mac_low32;
+ unsigned int timeout;
+ unsigned int temp;
+
+ spin_lock_init(&pdata->phy_lock);
+
+ /* Reset the LAN911x */
+ smsc911x_reg_write(HW_CFG_SRST_, pdata, HW_CFG);
+ timeout = 10;
+ do {
+ udelay(10);
+ temp = smsc911x_reg_read(pdata, HW_CFG);
+ } while ((--timeout) && (temp & HW_CFG_SRST_));
+
+ if (unlikely(temp & HW_CFG_SRST_)) {
+ SMSC_WARNING("Failed to complete reset");
+ return -ENODEV;
+ }
+
+ smsc911x_reg_write(0x00050000, pdata, HW_CFG);
+ smsc911x_reg_write(0x006E3740, pdata, AFC_CFG);
+
+ /* Make sure EEPROM has finished loading before setting GPIO_CFG */
+ timeout = 50;
+ while ((timeout--) &&
+ (smsc911x_reg_read(pdata, E2P_CMD) & E2P_CMD_EPC_BUSY_)) {
+ udelay(10);
+ }
+
+ if (unlikely(timeout == 0)) {
+ SMSC_WARNING("Timed out waiting for EEPROM "
+ "busy bit to clear\n");
+ }
+#if USE_DEBUG >= 1
+ smsc911x_reg_write(0x00670700, pdata, GPIO_CFG);
+#else
+ smsc911x_reg_write(0x70070000, pdata, GPIO_CFG);
+#endif
+
+ /* Initialise irqs, but leave all sources disabled */
+ smsc911x_reg_write(0, pdata, INT_EN);
+ smsc911x_reg_write(0xFFFFFFFF, pdata, INT_STS);
+ /* Set interrupt deassertion to 100uS */
+ smsc911x_reg_write(((10 << 24) | INT_CFG_IRQ_EN_), pdata, INT_CFG);
+
+ /*
+ * intcfg |= INT_CFG_IRQ_POL_; use this to set IRQ_POL bit
+ * intcfg |= INT_CFG_IRQ_TYPE_; use this to set IRQ_TYPE bit
+ */
+
+ SMSC_TRACE("Testing irq handler using IRQ %d", dev->irq);
+ pdata->request_irq_disable = 0;
+ pdata->software_irq_signal = 0;
+ smp_wmb();
+
+ temp = smsc911x_reg_read(pdata, INT_EN);
+ temp |= INT_EN_SW_INT_EN_;
+ smsc911x_reg_write(temp, pdata, INT_EN);
+
+ timeout = 1000;
+ while (timeout--) {
+ smp_rmb();
+ if (pdata->software_irq_signal)
+ break;
+ msleep(1);
+ }
+
+ if (!pdata->software_irq_signal) {
+ printk(KERN_WARNING "%s: ISR failed signaling test (IRQ %d)\n",
+ dev->name, dev->irq);
+ return -ENODEV;
+ }
+ SMSC_TRACE("IRQ handler passed test using IRQ %d", dev->irq);
+
+ printk(KERN_INFO "%s: SMSC911x/921x identified at %#08lx, IRQ: %d\n",
+ dev->name, (unsigned long)pdata->ioaddr, dev->irq);
+
+ spin_lock_irq(&pdata->phy_lock);
+
+ /* Read mac address from EEPROM */
+ mac_high16 = smsc911x_mac_read(pdata, ADDRH);
+ mac_low32 = smsc911x_mac_read(pdata, ADDRL);
+
+ /* Generate random MAC address if eeprom values are invalid */
+ if ((mac_high16 == 0x0000FFFF) && (mac_low32 == 0xFFFFFFFF)) {
+ u8 random_mac[6];
+ random_ether_addr(random_mac);
+ mac_high16 = (random_mac[5] << 8) | random_mac[4];
+ mac_low32 = (random_mac[3] << 24) | (random_mac[2] << 16) |
+ (random_mac[1] << 8) | random_mac[0];
+
+ smsc911x_mac_write(pdata, ADDRH, mac_high16);
+ smsc911x_mac_write(pdata, ADDRL, mac_low32);
+ SMSC_TRACE("MAC Address is set to random_ether_addr");
+ } else {
+ SMSC_TRACE("Mac Address is read from LAN911x EEPROM");
+ }
+
+ spin_unlock_irq(&pdata->phy_lock);
+
+ dev->dev_addr[0] = (u8)(mac_low32);
+ dev->dev_addr[1] = (u8)(mac_low32 >> 8);
+ dev->dev_addr[2] = (u8)(mac_low32 >> 16);
+ dev->dev_addr[3] = (u8)(mac_low32 >> 24);
+ dev->dev_addr[4] = (u8)(mac_high16);
+ dev->dev_addr[5] = (u8)(mac_high16 >> 8);
+ printk(KERN_INFO
+ "%s: SMSC911x MAC Address: %02x:%02x:%02x:%02x:%02x:%02x\n",
+ dev->name, dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
+ dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
+
+ netif_carrier_off(dev);
+ if (!smsc911x_phy_initialise(dev)) {
+ SMSC_WARNING("Failed to initialize PHY");
+ return -ENODEV;
+ }
+
+ temp = smsc911x_reg_read(pdata, HW_CFG);
+ temp &= HW_CFG_TX_FIF_SZ_;
+ temp |= HW_CFG_SF_;
+ smsc911x_reg_write(temp, pdata, HW_CFG);
+
+ temp = smsc911x_reg_read(pdata, FIFO_INT);
+ temp |= FIFO_INT_TX_AVAIL_LEVEL_;
+ temp &= ~(FIFO_INT_RX_STS_LEVEL_);
+ smsc911x_reg_write(temp, pdata, FIFO_INT);
+
+ /* set RX Data offset to 2 bytes for alignment */
+ smsc911x_reg_write((2 << 8), pdata, RX_CFG);
+
+ temp = smsc911x_reg_read(pdata, INT_EN);
+ temp |= (INT_EN_TDFA_EN_ | INT_EN_RSFL_EN_ | INT_EN_PHY_INT_EN_);
+ smsc911x_reg_write(temp, pdata, INT_EN);
+
+ spin_lock_irq(&pdata->phy_lock);
+ temp = smsc911x_mac_read(pdata, MAC_CR);
+ temp |= (MAC_CR_TXEN_ | MAC_CR_RXEN_ | MAC_CR_HBDIS_);
+ smsc911x_mac_write(pdata, MAC_CR, temp);
+ spin_unlock_irq(&pdata->phy_lock);
+
+ smsc911x_reg_write(TX_CFG_TX_ON_, pdata, TX_CFG);
+
+ netif_start_queue(dev);
+ return 0;
+}
+
+/* Entry point for stopping the interface */
+static int smsc911x_stop(struct net_device *dev)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+
+ pdata->stop_link_poll = 1;
+ del_timer_sync(&pdata->link_poll_timer);
+
+ smsc911x_reg_write((smsc911x_reg_read(pdata, INT_CFG) &
+ (~INT_CFG_IRQ_EN_)), pdata, INT_CFG);
+ netif_stop_queue(dev);
+
+ /* At this point all Rx and Tx activity is stopped */
+ pdata->stats.rx_dropped += smsc911x_reg_read(pdata, RX_DROP);
+ smsc911x_tx_update_txcounters(pdata);
+
+ SMSC_TRACE("<--Simp911x_stop");
+ return 0;
+}
+
+/* Entry point for transmitting a packet */
+static int smsc911x_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ unsigned int freespace;
+ unsigned int tx_cmd_a;
+ unsigned int tx_cmd_b;
+ unsigned int temp;
+ u32 wrsz;
+ u32 bufp;
+
+ freespace = smsc911x_reg_read(pdata, TX_FIFO_INF) & TX_FIFO_INF_TDFREE_;
+
+ if (unlikely(freespace < TX_FIFO_LOW_THRESHOLD))
+ SMSC_WARNING("Tx data fifo low, space available: %d",
+ freespace);
+
+ /* Word alignment adjustment */
+ tx_cmd_a = ((((unsigned int)(skb->data)) & 0x03) << 16);
+ tx_cmd_a |= TX_CMD_A_FIRST_SEG_ | TX_CMD_A_LAST_SEG_;
+ tx_cmd_a |= (unsigned int)skb->len;
+
+ tx_cmd_b = ((unsigned int)skb->len) << 16;
+ tx_cmd_b |= (unsigned int)skb->len;
+
+ smsc911x_reg_write(tx_cmd_a, pdata, TX_DATA_FIFO);
+ smsc911x_reg_write(tx_cmd_b, pdata, TX_DATA_FIFO);
+
+ bufp = ((u32)skb->data) & 0xFFFFFFFC;
+ wrsz = (u32)skb->len + 3;
+ wrsz += ((u32)skb->data) & 0x3;
+ wrsz >>= 2;
+
+ smsc911x_tx_writefifo(pdata, (unsigned int *)bufp, wrsz);
+ dev_kfree_skb(skb);
+ freespace -= (skb->len + 32);
+ dev->trans_start = jiffies;
+
+ if (unlikely(smsc911x_tx_get_txstatcount(pdata) >= 30))
+ smsc911x_tx_update_txcounters(pdata);
+
+ if (freespace < TX_FIFO_LOW_THRESHOLD) {
+ netif_stop_queue(dev);
+ temp = smsc911x_reg_read(pdata, FIFO_INT);
+ temp &= 0x00FFFFFF;
+ temp |= 0x32000000;
+ smsc911x_reg_write(temp, pdata, FIFO_INT);
+ }
+
+ return NETDEV_TX_OK;
+}
+
+/* Entry point for getting status counters */
+static struct net_device_stats *smsc911x_get_stats(struct net_device *dev)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ return &pdata->stats;
+}
+
+/* Entry point for setting addressing modes */
+static void smsc911x_set_multicast_list(struct net_device *dev)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ unsigned long flags;
+
+ if (dev->flags & IFF_PROMISC) {
+ /* Enabling promiscuous mode */
+ pdata->set_bits_mask = MAC_CR_PRMS_;
+ pdata->clear_bits_mask = (MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
+ pdata->hashhi = 0;
+ pdata->hashlo = 0;
+ } else if (dev->flags & IFF_ALLMULTI) {
+ /* Enabling all multicast mode */
+ pdata->set_bits_mask = MAC_CR_MCPAS_;
+ pdata->clear_bits_mask = (MAC_CR_PRMS_ | MAC_CR_HPFILT_);
+ pdata->hashhi = 0;
+ pdata->hashlo = 0;
+ } else if (dev->mc_count > 0) {
+ /* Enabling specific multicast addresses */
+ unsigned int hash_high = 0;
+ unsigned int hash_low = 0;
+ unsigned int count = 0;
+ struct dev_mc_list *mc_list = dev->mc_list;
+
+ pdata->set_bits_mask = MAC_CR_HPFILT_;
+ pdata->clear_bits_mask = (MAC_CR_PRMS_ | MAC_CR_MCPAS_);
+
+ while (mc_list) {
+ count++;
+ if ((mc_list->dmi_addrlen) == ETH_ALEN) {
+ unsigned int bitnum =
+ smsc911x_hash(mc_list->dmi_addr);
+ unsigned int mask = 0x01 << (bitnum & 0x1F);
+ if (bitnum & 0x20)
+ hash_high |= mask;
+ else
+ hash_low |= mask;
+ } else {
+ SMSC_WARNING("dmi_addrlen != 6");
+ }
+ mc_list = mc_list->next;
+ }
+ if (count != (unsigned int)dev->mc_count)
+ SMSC_WARNING("mc_count != dev->mc_count");
+
+ pdata->hashhi = hash_high;
+ pdata->hashlo = hash_low;
+ } else {
+ /* Enabling local MAC address only */
+ pdata->set_bits_mask = 0;
+ pdata->clear_bits_mask =
+ (MAC_CR_PRMS_ | MAC_CR_MCPAS_ | MAC_CR_HPFILT_);
+ pdata->hashhi = 0;
+ pdata->hashlo = 0;
+ }
+
+ spin_lock_irqsave(&pdata->phy_lock, flags);
+
+ if (pdata->generation <= 1) {
+ /* Older hardware revision - cannot change these flags while
+ * receiving data */
+ if (pdata->multicast_update_pending == 0) {
+ unsigned int temp;
+ SMSC_TRACE("scheduling mcast update");
+ pdata->multicast_update_pending = 1;
+
+ /* Request the hardware to stop, then perform the
+ * update when we get an RX_STOP interrupt */
+ smsc911x_reg_write(INT_STS_RXSTOP_INT_, pdata, INT_STS);
+ temp = smsc911x_reg_read(pdata, INT_EN);
+ temp |= INT_EN_RXSTOP_INT_EN_;
+ smsc911x_reg_write(temp, pdata, INT_EN);
+
+ temp = smsc911x_mac_read(pdata, MAC_CR);
+ temp &= ~(MAC_CR_RXEN_);
+ smsc911x_mac_write(pdata, MAC_CR, temp);
+ } else {
+ /* There is another update pending, this should now
+ * use the newer values */
+ }
+ } else {
+ /* Newer hardware revision - can write immediately */
+ smsc911x_rx_multicast_update(pdata);
+ }
+
+ spin_unlock_irqrestore(&pdata->phy_lock, flags);
+}
+
+static irqreturn_t
+smsc911x_irqhandler(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct net_device *dev = dev_id;
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ unsigned int intsts;
+ unsigned int inten;
+ unsigned int temp;
+ int serviced = IRQ_NONE;
+
+ intsts = smsc911x_reg_read(pdata, INT_STS);
+ inten = smsc911x_reg_read(pdata, INT_EN);
+
+ if (unlikely(intsts & inten & INT_STS_SW_INT_)) {
+ temp = smsc911x_reg_read(pdata, INT_EN);
+ temp &= (~INT_EN_SW_INT_EN_);
+ smsc911x_reg_write(temp, pdata, INT_EN);
+ smsc911x_reg_write(INT_STS_SW_INT_, pdata, INT_STS);
+ pdata->software_irq_signal = 1;
+ smp_wmb();
+ serviced = IRQ_HANDLED;
+ if (pdata->request_irq_disable) {
+ temp = smsc911x_reg_read(pdata, INT_CFG);
+ temp &= (~INT_CFG_IRQ_EN_);
+ smsc911x_reg_write(temp, pdata, INT_CFG);
+ /* Prevent irqs from being handled */
+ intsts = 0;
+ }
+ }
+
+ if (unlikely(intsts & inten & INT_STS_RXSTOP_INT_)) {
+ /* Called when there is a multicast update scheduled and
+ * it is now safe to complete the update */
+ SMSC_TRACE("RX Stop interrupt");
+ temp = smsc911x_reg_read(pdata, INT_EN);
+ temp &= (~INT_EN_RXSTOP_INT_EN_);
+ smsc911x_reg_write(temp, pdata, INT_EN);
+ smsc911x_reg_write(INT_STS_RXSTOP_INT_, pdata, INT_STS);
+ smsc911x_rx_multicast_update_workaround(pdata);
+ serviced = IRQ_HANDLED;
+ }
+
+ if (intsts & inten & INT_STS_TDFA_) {
+ temp = smsc911x_reg_read(pdata, FIFO_INT);
+ temp |= FIFO_INT_TX_AVAIL_LEVEL_;
+ smsc911x_reg_write(temp, pdata, FIFO_INT);
+ smsc911x_reg_write(INT_STS_TDFA_, pdata, INT_STS);
+ netif_wake_queue(dev);
+ serviced = IRQ_HANDLED;
+ }
+
+ if (unlikely(intsts & inten & INT_STS_RXE_)) {
+ smsc911x_reg_write(INT_STS_RXE_, pdata, INT_STS);
+ serviced = IRQ_HANDLED;
+ }
+
+ if (likely(intsts & inten & INT_STS_RSFL_)) {
+ /* Disable Rx interrupts and schedule NAPI poll */
+ temp = smsc911x_reg_read(pdata, INT_EN);
+ temp &= (~INT_EN_RSFL_EN_);
+ smsc911x_reg_write(temp, pdata, INT_EN);
+ netif_rx_schedule(dev);
+ serviced = IRQ_HANDLED;
+ }
+
+ if (unlikely(intsts & inten & INT_STS_PHY_INT_)) {
+ smsc911x_reg_write(INT_STS_PHY_INT_, pdata, INT_STS);
+ spin_lock(&pdata->phy_lock);
+ temp = smsc911x_phy_read(pdata, MII_INTSTS);
+ spin_unlock(&pdata->phy_lock);
+ SMSC_TRACE("PHY interrupt, sts 0x%04X", (u16)temp);
+ smsc911x_phy_update_linkmode(dev, 0);
+ serviced = IRQ_HANDLED;
+ }
+ return serviced;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+void smsc911x_poll_controller(struct net_device *dev)
+{
+ disable_irq(dev->irq);
+ smsc911x_irqhandler(0, dev, NULL);
+ enable_irq(dev->irq);
+}
+#endif /* CONFIG_NET_POLL_CONTROLLER */
+
+/* Standard ioctls for mii-tool */
+static int smsc911x_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ struct mii_ioctl_data *data = if_mii(ifr);
+ unsigned long flags;
+
+ SMSC_TRACE("ioctl cmd 0x%x", cmd);
+ switch (cmd) {
+ case SIOCGMIIPHY:
+ data->phy_id = pdata->mii.phy_id;
+ return 0;
+ case SIOCGMIIREG:
+ spin_lock_irqsave(&pdata->phy_lock, flags);
+ data->val_out = smsc911x_phy_read(pdata, data->reg_num);
+ spin_unlock_irqrestore(&pdata->phy_lock, flags);
+ return 0;
+ case SIOCSMIIREG:
+ spin_lock_irqsave(&pdata->phy_lock, flags);
+ smsc911x_phy_write(pdata, data->reg_num, data->val_in);
+ spin_unlock_irqrestore(&pdata->phy_lock, flags);
+ return 0;
+ }
+
+ SMSC_TRACE("unsupported ioctl cmd");
+ return -1;
+}
+
+static int
+smsc911x_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+
+ cmd->maxtxpkt = 1;
+ cmd->maxrxpkt = 1;
+ return mii_ethtool_gset(&pdata->mii, cmd);
+}
+
+static int
+smsc911x_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+
+ return mii_ethtool_sset(&pdata->mii, cmd);
+}
+
+static void smsc911x_ethtool_getdrvinfo(struct net_device *dev,
+ struct ethtool_drvinfo *info)
+{
+ strncpy(info->driver, SMSC_CHIPNAME, sizeof(info->driver));
+ strncpy(info->version, SMSC_DRV_VERSION, sizeof(info->version));
+ strncpy(info->bus_info, dev->class_dev.dev->bus_id,
+ sizeof(info->bus_info));
+}
+
+static int smsc911x_ethtool_nwayreset(struct net_device *dev)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+
+ return mii_nway_restart(&pdata->mii);
+}
+
+static u32 smsc911x_ethtool_getmsglevel(struct net_device *dev)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ return pdata->msg_enable;
+}
+
+static void smsc911x_ethtool_setmsglevel(struct net_device *dev, u32 level)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ pdata->msg_enable = level;
+}
+
+static int smsc911x_ethtool_getregslen(struct net_device *dev)
+{
+ return (((E2P_CMD - ID_REV) / 4 + 1) + (WUCSR - MAC_CR) + 1 + 32) *
+ sizeof(u32);
+}
+
+static void
+smsc911x_ethtool_getregs(struct net_device *dev, struct ethtool_regs *regs,
+ void *buf)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ unsigned long flags;
+ unsigned int i;
+ unsigned int j = 0;
+ u32 *data = buf;
+
+ regs->version = pdata->idrev;
+ for (i = ID_REV; i <= E2P_CMD; i += (sizeof(u32)))
+ data[j++] = smsc911x_reg_read(pdata, i);
+
+ spin_lock_irqsave(&pdata->phy_lock, flags);
+ for (i = MAC_CR; i <= WUCSR; i++)
+ data[j++] = smsc911x_mac_read(pdata, i);
+ for (i = 0; i <= 31; i++)
+ data[j++] = smsc911x_phy_read(pdata, i);
+ spin_unlock_irqrestore(&pdata->phy_lock, flags);
+}
+
+static void smsc911x_eeprom_enable_access(struct smsc911x_data *pdata)
+{
+ unsigned int temp;
+ temp = smsc911x_reg_read(pdata, GPIO_CFG);
+ temp &= ~GPIO_CFG_EEPR_EN_;
+ smsc911x_reg_write(temp, pdata, GPIO_CFG);
+ msleep(1);
+}
+
+static int smsc911x_eeprom_send_cmd(struct smsc911x_data *pdata, u32 op)
+{
+ int timeout = 100;
+ u32 e2cmd;
+
+ SMSC_TRACE("op 0x%08x", op);
+ if (smsc911x_reg_read(pdata, E2P_CMD) & E2P_CMD_EPC_BUSY_) {
+ SMSC_WARNING("Busy at start");
+ return -EBUSY;
+ }
+
+ e2cmd = op | E2P_CMD_EPC_BUSY_;
+ smsc911x_reg_write(e2cmd, pdata, E2P_CMD);
+
+ do {
+ msleep(1);
+ e2cmd = smsc911x_reg_read(pdata, E2P_CMD);
+ } while ((e2cmd & E2P_CMD_EPC_BUSY_) && (timeout--));
+
+ if (!timeout) {
+ SMSC_TRACE("TIMED OUT");
+ return -EAGAIN;
+ }
+
+ if (e2cmd & E2P_CMD_EPC_TIMEOUT_) {
+ SMSC_TRACE("Error occured during eeprom operation");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int smsc911x_eeprom_read_location(struct smsc911x_data *pdata,
+ u8 address, u8 *data)
+{
+ u32 op = E2P_CMD_EPC_CMD_READ_ | address;
+ int ret;
+
+ SMSC_TRACE("address 0x%x", address);
+ ret = smsc911x_eeprom_send_cmd(pdata, op);
+
+ if (!ret)
+ data[address] = smsc911x_reg_read(pdata, E2P_DATA);
+
+ return ret;
+}
+
+static int smsc911x_eeprom_write_location(struct smsc911x_data *pdata,
+ u8 address, u8 data)
+{
+ u32 op = E2P_CMD_EPC_CMD_ERASE_ | address;
+ int ret;
+
+ SMSC_TRACE("address 0x%x, data 0x%x", address, data);
+ ret = smsc911x_eeprom_send_cmd(pdata, op);
+
+ if (!ret) {
+ op = E2P_CMD_EPC_CMD_WRITE_ | address;
+ smsc911x_reg_write((u32)data, pdata, E2P_DATA);
+ ret = smsc911x_eeprom_send_cmd(pdata, op);
+ }
+
+ return ret;
+}
+
+static int smsc911x_ethtool_get_eeprom_len(struct net_device *dev)
+{
+ return SMSC911X_EEPROM_SIZE;
+}
+
+static int smsc911x_ethtool_get_eeprom(struct net_device *dev,
+ struct ethtool_eeprom *eeprom, u8 *data)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+ u8 eeprom_data[SMSC911X_EEPROM_SIZE];
+ int len;
+ int i;
+
+ smsc911x_eeprom_enable_access(pdata);
+
+ len = min(eeprom->len, SMSC911X_EEPROM_SIZE);
+ for (i = 0; i < len; i++) {
+ int ret = smsc911x_eeprom_read_location(pdata, i, eeprom_data);
+ if (ret < 0) {
+ eeprom->len = 0;
+ return ret;
+ }
+ }
+
+ memcpy(data, &eeprom_data[eeprom->offset], len);
+ eeprom->len = len;
+ return 0;
+}
+
+static int smsc911x_ethtool_set_eeprom(struct net_device *dev,
+ struct ethtool_eeprom *eeprom, u8 *data)
+{
+ int ret;
+ struct smsc911x_data *pdata = netdev_priv(dev);
+
+ smsc911x_eeprom_enable_access(pdata);
+ smsc911x_eeprom_send_cmd(pdata, E2P_CMD_EPC_CMD_EWEN_);
+ ret = smsc911x_eeprom_write_location(pdata, eeprom->offset, *data);
+ smsc911x_eeprom_send_cmd(pdata, E2P_CMD_EPC_CMD_EWDS_);
+
+ /* Single byte write, according to man page */
+ eeprom->len = 1;
+
+ return ret;
+}
+
+static struct ethtool_ops smsc911x_ethtool_ops = {
+ .get_settings = smsc911x_ethtool_getsettings,
+ .set_settings = smsc911x_ethtool_setsettings,
+ .get_link = ethtool_op_get_link,
+ .get_drvinfo = smsc911x_ethtool_getdrvinfo,
+ .nway_reset = smsc911x_ethtool_nwayreset,
+ .get_msglevel = smsc911x_ethtool_getmsglevel,
+ .set_msglevel = smsc911x_ethtool_setmsglevel,
+ .get_regs_len = smsc911x_ethtool_getregslen,
+ .get_regs = smsc911x_ethtool_getregs,
+ .get_eeprom_len = smsc911x_ethtool_get_eeprom_len,
+ .get_eeprom = smsc911x_ethtool_get_eeprom,
+ .set_eeprom = smsc911x_ethtool_set_eeprom,
+};
+
+/* Initializing private device structures */
+static int smsc911x_init(struct net_device *dev)
+{
+ struct smsc911x_data *pdata = netdev_priv(dev);
+
+ SMSC_TRACE("Driver Parameters:");
+ SMSC_TRACE("LAN base: 0x%08lX", (unsigned long)pdata->ioaddr);
+ SMSC_TRACE("IRQ: %d", dev->irq);
+ SMSC_TRACE("PHY will be autodetected.");
+
+ if (pdata->ioaddr == 0) {
+ SMSC_WARNING("pdata->ioaddr: 0x00000000");
+ return -ENODEV;
+ }
+
+ /* Default generation to zero (all workarounds apply) */
+ pdata->generation = 0;
+
+ pdata->idrev = smsc911x_reg_read(pdata, ID_REV);
+ if (((pdata->idrev >> 16) & 0xFFFF) == (pdata->idrev & 0xFFFF)) {
+ SMSC_WARNING("idrev top 16 bits equal to bottom 16 bits, "
+ "idrev: 0x%08X", pdata->idrev);
+ SMSC_TRACE("This may mean the chip is set for 32 bit while "
+ "the bus is reading as 16 bit");
+ return -ENODEV;
+ }
+ switch (pdata->idrev & 0xFFFF0000) {
+ case 0x01180000:
+ switch (pdata->idrev & 0x0000FFFFUL) {
+ case 0UL:
+ SMSC_TRACE("LAN9118 Beacon identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 0;
+ break;
+ case 1UL:
+ SMSC_TRACE
+ ("LAN9118 Concord A0 identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 1;
+ break;
+ case 2UL:
+ SMSC_TRACE
+ ("LAN9118 Concord A1 identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 2;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9118 Concord A1 identified (NEW), idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 2;
+ break;
+ }
+ break;
+
+ case 0x01170000:
+ switch (pdata->idrev & 0x0000FFFFUL) {
+ case 0UL:
+ SMSC_TRACE("LAN9117 Beacon identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 0;
+ break;
+ case 1UL:
+ SMSC_TRACE
+ ("LAN9117 Concord A0 identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 1;
+ break;
+ case 2UL:
+ SMSC_TRACE
+ ("LAN9117 Concord A1 identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 2;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9117 Concord A1 identified (NEW), idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 2;
+ break;
+ }
+ break;
+
+ case 0x01160000:
+ switch (pdata->idrev & 0x0000FFFFUL) {
+ case 0UL:
+ SMSC_WARNING("LAN911x not identified, idrev: 0x%08X",
+ pdata->idrev);
+ return -ENODEV;
+ case 1UL:
+ SMSC_TRACE
+ ("LAN9116 Concord A0 identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 1;
+ break;
+ case 2UL:
+ SMSC_TRACE
+ ("LAN9116 Concord A1 identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 2;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9116 Concord A1 identified (NEW), idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 2;
+ break;
+ }
+ break;
+
+ case 0x01150000:
+ switch (pdata->idrev & 0x0000FFFFUL) {
+ case 0UL:
+ SMSC_WARNING("LAN911x not identified, idrev: 0x%08X",
+ pdata->idrev);
+ return -ENODEV;
+ case 1UL:
+ SMSC_TRACE
+ ("LAN9115 Concord A0 identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 1;
+ break;
+ case 2UL:
+ SMSC_TRACE
+ ("LAN9115 Concord A1 identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 2;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9115 Concord A1 identified (NEW), idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 2;
+ break;
+ }
+ break;
+
+ case 0x118A0000UL:
+ switch (pdata->idrev & 0x0000FFFFUL) {
+ case 0UL:
+ SMSC_TRACE
+ ("LAN9218 Boylston identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 3;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9218 Boylston identified (NEW), idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 3;
+ break;
+ }
+ break;
+
+ case 0x117A0000UL:
+ switch (pdata->idrev & 0x0000FFFFUL) {
+ case 0UL:
+ SMSC_TRACE
+ ("LAN9217 Boylston identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 3;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9217 Boylston identified (NEW), idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 3;
+ break;
+ }
+ break;
+
+ case 0x116A0000UL:
+ switch (pdata->idrev & 0x0000FFFFUL) {
+ case 0UL:
+ SMSC_TRACE
+ ("LAN9216 Boylston identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 3;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9216 Boylston identified (NEW), idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 3;
+ break;
+ }
+ break;
+
+ case 0x115A0000UL:
+ switch (pdata->idrev & 0x0000FFFFUL) {
+ case 0UL:
+ SMSC_TRACE
+ ("LAN9215 Boylston identified, idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 3;
+ break;
+ default:
+ SMSC_TRACE
+ ("LAN9215 Boylston identified (NEW), idrev: 0x%08X",
+ pdata->idrev);
+ pdata->generation = 3;
+ break;
+ }
+ break;
+
+ default:
+ SMSC_WARNING("LAN911x not identified, idrev: 0x%08X",
+ pdata->idrev);
+ return -ENODEV;
+ }
+
+ if (pdata->generation == 0)
+ SMSC_WARNING("This driver is not intended "
+ "for this chip revision");
+
+ ether_setup(dev);
+ dev->open = smsc911x_open;
+ dev->stop = smsc911x_stop;
+ dev->hard_start_xmit = smsc911x_hard_start_xmit;
+ dev->get_stats = smsc911x_get_stats;
+ dev->set_multicast_list = smsc911x_set_multicast_list;
+ dev->flags |= IFF_MULTICAST;
+ dev->do_ioctl = smsc911x_do_ioctl;
+ dev->poll = smsc911x_poll;
+ dev->weight = 64;
+ dev->ethtool_ops = &smsc911x_ethtool_ops;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ dev->poll_controller = smsc911x_poll_controller;
+#endif /* CONFIG_NET_POLL_CONTROLLER */
+
+ pdata->mii.phy_id_mask = 0x1f;
+ pdata->mii.reg_num_mask = 0x1f;
+ pdata->mii.force_media = 0;
+ pdata->mii.full_duplex = 0;
+ pdata->mii.dev = dev;
+ pdata->mii.mdio_read = smsc911x_mdio_read;
+ pdata->mii.mdio_write = smsc911x_mdio_write;
+
+ pdata->msg_enable = NETIF_MSG_LINK;
+
+ return 0;
+}
+
+static int smsc911x_drv_remove(struct platform_device *pdev)
+{
+ struct net_device *dev;
+ struct smsc911x_data *pdata;
+ struct resource *res;
+
+ dev = platform_get_drvdata(pdev);
+ BUG_ON(!dev);
+ pdata = netdev_priv(dev);
+ BUG_ON(!pdata);
+ BUG_ON(!pdata->ioaddr);
+
+ SMSC_TRACE("Stopping driver.");
+ platform_set_drvdata(pdev, NULL);
+ unregister_netdev(dev);
+ free_irq(dev->irq, dev);
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+ "smsc911x-memory");
+ if (!res)
+ platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+ release_mem_region(res->start, res->end - res->start);
+
+ iounmap(pdata->ioaddr);
+
+ free_netdev(dev);
+
+ return 0;
+}
+
+static int smsc911x_drv_probe(struct platform_device *pdev)
+{
+ struct net_device *dev;
+ struct smsc911x_data *pdata;
+ struct resource *res;
+ int res_size;
+ int retval;
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+ "smsc911x-memory");
+ if (!res)
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ retval = -ENODEV;
+ goto out_0;
+ }
+ res_size = res->end - res->start;
+
+ if (!request_mem_region(res->start, res_size, SMSC_CHIPNAME)) {
+ retval = -EBUSY;
+ goto out_0;
+ }
+
+ dev = alloc_etherdev(sizeof(struct smsc911x_data));
+ if (!dev) {
+ printk(KERN_WARNING "%s: Could not allocate device.\n",
+ SMSC_CHIPNAME);
+ retval = -ENOMEM;
+ goto out_release_io_1;
+ }
+ SET_MODULE_OWNER(dev);
+ SET_NETDEV_DEV(dev, &pdev->dev);
+
+ pdata = netdev_priv(dev);
+ memset(pdata, 0, sizeof(struct smsc911x_data));
+
+ dev->irq = platform_get_irq(pdev, 0);
+ pdata->ioaddr = ioremap_nocache(res->start, res_size);
+
+ if (pdata->ioaddr == NULL) {
+ SMSC_WARNING("Error smsc911x base address invalid");
+ retval = -ENOMEM;
+ goto out_free_netdev_2;
+ }
+
+ if ((retval = smsc911x_init(dev)) < 0)
+ goto out_unmap_io_3;
+
+ retval = request_irq(dev->irq, smsc911x_irqhandler, SA_INTERRUPT,
+ SMSC_CHIPNAME, dev);
+ if (retval) {
+ SMSC_WARNING("Unable to claim requested irq: %d", dev->irq);
+ goto out_unmap_io_3;
+ }
+
+ platform_set_drvdata(pdev, dev);
+
+ retval = register_netdev(dev);
+ if (retval) {
+ SMSC_WARNING("Error %i registering device", retval);
+ goto out_unset_drvdata_4;
+ } else {
+ SMSC_TRACE("Network interface: \"%s\"", dev->name);
+ }
+
+ return 0;
+
+out_unset_drvdata_4:
+ platform_set_drvdata(pdev, NULL);
+ free_irq(dev->irq, dev);
+out_unmap_io_3:
+ iounmap(pdata->ioaddr);
+out_free_netdev_2:
+ free_netdev(dev);
+out_release_io_1:
+ release_mem_region(res->start, res->end - res->start);
+out_0:
+ return retval;
+}
+
+static struct platform_driver smsc911x_driver = {
+ .probe = smsc911x_drv_probe,
+ .remove = smsc911x_drv_remove,
+ .suspend = 0, /* TODO: Add suspend routine */
+ .resume = 0, /* TODO: Add resume routine */
+ .driver = {
+ .name = SMSC_CHIPNAME,
+ },
+};
+
+/* Entry point for loading the module */
+static int __init smsc911x_init_module(void)
+{
+ return platform_driver_register(&smsc911x_driver);
+}
+
+/* entry point for unloading the module */
+static void __exit smsc911x_cleanup_module(void)
+{
+ platform_driver_unregister(&smsc911x_driver);
+}
+
+module_init(smsc911x_init_module);
+module_exit(smsc911x_cleanup_module);
diff --git a/drivers/net/smsc911x.h b/drivers/net/smsc911x.h
new file mode 100644
index 0000000..d2f5b33
--- /dev/null
+++ b/drivers/net/smsc911x.h
@@ -0,0 +1,445 @@
+#ifndef __SMSC911X_H__
+#define __SMSC911X_H__
+
+#define SMSC_CAN_USE_32BIT 1
+#define TX_FIFO_LOW_THRESHOLD (u32)1600
+#define SMSC911X_EEPROM_SIZE (u32)7
+#define USE_DEBUG 0
+
+/* implements a PHY loopback test at initialisation time, to ensure a packet
+ * can be succesfully looped back */
+#define USE_PHY_WORK_AROUND
+
+/* 10/100 LED link-state inversion when media is disconnected */
+#define USE_LED1_WORK_AROUND
+
+#if USE_DEBUG >= 1
+#define SMSC_WARNING(fmt, args...) \
+ printk(KERN_EMERG "SMSC_WARNING: %s: " fmt "\n", \
+ __FUNCTION__ , ## args)
+#else
+#define SMSC_WARNING(msg, args...)
+#endif /* USE_DEBUG >= 1 */
+
+#if USE_DEBUG >= 2
+#define SMSC_TRACE(fmt,args...) \
+ printk(KERN_EMERG "SMSC_TRACE: %s: " fmt "\n", \
+ __FUNCTION__ , ## args)
+#else
+#define SMSC_TRACE(msg,args...)
+#endif /* USE_DEBUG >= 2 */
+
+struct smsc911x_data {
+ void __iomem *ioaddr;
+ unsigned int idrev;
+ unsigned int generation; /* used to decide which workarounds apply */
+
+ /* This needs to be acquired before calling any of below:
+ * smsc911x_mac_read(), smsc911x_mac_write()
+ * smsc911x_phy_read(), smsc911x_phy_write()
+ */
+ spinlock_t phy_lock;
+
+ struct net_device_stats stats;
+ struct mii_if_info mii;
+ unsigned int using_extphy;
+ u32 msg_enable;
+#ifdef USE_LED1_WORK_AROUND
+ unsigned int gpio_setting;
+ unsigned int gpio_orig_setting;
+#endif
+ struct timer_list link_poll_timer;
+ int stop_link_poll;
+
+ int request_irq_disable;
+ int software_irq_signal;
+
+#ifdef USE_PHY_WORK_AROUND
+#define MIN_PACKET_SIZE (64)
+ char loopback_tx_pkt[MIN_PACKET_SIZE];
+ char loopback_rx_pkt[MIN_PACKET_SIZE];
+ unsigned int resetcount;
+#endif
+
+ /* Members for Multicast filter workaround */
+ unsigned int multicast_update_pending;
+ unsigned int set_bits_mask;
+ unsigned int clear_bits_mask;
+ unsigned int hashhi;
+ unsigned int hashlo;
+};
+
+#if SMSC_CAN_USE_32BIT
+
+static inline u32 smsc911x_reg_read(struct smsc911x_data *pdata, u32 reg)
+{
+ return readl(pdata->ioaddr + reg);
+}
+
+static inline void smsc911x_reg_write(u32 val, struct smsc911x_data *pdata,
+ u32 reg)
+{
+ writel(val, pdata->ioaddr + reg);
+}
+
+#else /* SMSC_CAN_USE_32BIT */
+
+static inline u32 smsc911x_reg_read(struct smsc911x_data *pdata, u32 reg)
+{
+ u32 reg_val;
+ unsigned long flags;
+
+ /* these two 16-bit reads must be performed consecutively, so must
+ * not be interrupted by our own ISR (which would start another
+ * read operation) */
+ local_irq_save(flags);
+ reg_val = ((readw(pdata->ioaddr + reg) & 0xFFFF) |
+ ((readw(pdata->ioaddr + reg + 2) & 0xFFFF) << 16));
+ local_irq_restore(flags);
+
+ return reg_val;
+}
+
+static inline void smsc911x_reg_write(u32 val, struct smsc911x_data *pdata,
+ u32 reg)
+{
+ unsigned long flags;
+
+ /* these two 16-bit writes must be performed consecutively, so must
+ * not be interrupted by our own ISR (which would start another
+ * read operation) */
+ local_irq_save(flags);
+ writew(val & 0xFFFF, pdata->ioaddr + reg);
+ writew((val >> 16) & 0xFFFF, pdata->ioaddr + reg + 2);
+ local_irq_restore(flags);
+}
+
+#endif /* SMSC_CAN_USE_32BIT */
+
+/* SMSC911x registers and bitfields */
+#define RX_DATA_FIFO 0x00
+
+#define TX_DATA_FIFO 0x20
+#define TX_CMD_A_ON_COMP_ 0x80000000
+#define TX_CMD_A_BUF_END_ALGN_ 0x03000000
+#define TX_CMD_A_4_BYTE_ALGN_ 0x00000000
+#define TX_CMD_A_16_BYTE_ALGN_ 0x01000000
+#define TX_CMD_A_32_BYTE_ALGN_ 0x02000000
+#define TX_CMD_A_DATA_OFFSET_ 0x001F0000
+#define TX_CMD_A_FIRST_SEG_ 0x00002000
+#define TX_CMD_A_LAST_SEG_ 0x00001000
+#define TX_CMD_A_BUF_SIZE_ 0x000007FF
+#define TX_CMD_B_PKT_TAG_ 0xFFFF0000
+#define TX_CMD_B_ADD_CRC_DISABLE_ 0x00002000
+#define TX_CMD_B_DISABLE_PADDING_ 0x00001000
+#define TX_CMD_B_PKT_BYTE_LENGTH_ 0x000007FF
+
+#define RX_STATUS_FIFO 0x40
+#define RX_STS_ES_ 0x00008000
+#define RX_STS_MCAST_ 0x00000400
+
+#define RX_STATUS_FIFO_PEEK 0x44
+
+#define TX_STATUS_FIFO 0x48
+#define TX_STS_ES_ 0x00008000
+
+#define TX_STATUS_FIFO_PEEK 0x4C
+
+#define ID_REV 0x50
+#define ID_REV_CHIP_ID_ 0xFFFF0000
+#define ID_REV_REV_ID_ 0x0000FFFF
+
+#define INT_CFG 0x54
+#define INT_CFG_INT_DEAS_ 0xFF000000
+#define INT_CFG_INT_DEAS_CLR_ 0x00004000
+#define INT_CFG_INT_DEAS_STS_ 0x00002000
+#define INT_CFG_IRQ_INT_ 0x00001000
+#define INT_CFG_IRQ_EN_ 0x00000100
+#define INT_CFG_IRQ_POL_ 0x00000010
+#define INT_CFG_IRQ_TYPE_ 0x00000001
+
+#define INT_STS 0x58
+#define INT_STS_SW_INT_ 0x80000000
+#define INT_STS_TXSTOP_INT_ 0x02000000
+#define INT_STS_RXSTOP_INT_ 0x01000000
+#define INT_STS_RXDFH_INT_ 0x00800000
+#define INT_STS_RXDF_INT_ 0x00400000
+#define INT_STS_TX_IOC_ 0x00200000
+#define INT_STS_RXD_INT_ 0x00100000
+#define INT_STS_GPT_INT_ 0x00080000
+#define INT_STS_PHY_INT_ 0x00040000
+#define INT_STS_PME_INT_ 0x00020000
+#define INT_STS_TXSO_ 0x00010000
+#define INT_STS_RWT_ 0x00008000
+#define INT_STS_RXE_ 0x00004000
+#define INT_STS_TXE_ 0x00002000
+#define INT_STS_TDFU_ 0x00000800
+#define INT_STS_TDFO_ 0x00000400
+#define INT_STS_TDFA_ 0x00000200
+#define INT_STS_TSFF_ 0x00000100
+#define INT_STS_TSFL_ 0x00000080
+#define INT_STS_RXDF_ 0x00000040
+#define INT_STS_RDFL_ 0x00000020
+#define INT_STS_RSFF_ 0x00000010
+#define INT_STS_RSFL_ 0x00000008
+#define INT_STS_GPIO2_INT_ 0x00000004
+#define INT_STS_GPIO1_INT_ 0x00000002
+#define INT_STS_GPIO0_INT_ 0x00000001
+
+#define INT_EN 0x5C
+#define INT_EN_SW_INT_EN_ 0x80000000
+#define INT_EN_TXSTOP_INT_EN_ 0x02000000
+#define INT_EN_RXSTOP_INT_EN_ 0x01000000
+#define INT_EN_RXDFH_INT_EN_ 0x00800000
+#define INT_EN_TIOC_INT_EN_ 0x00200000
+#define INT_EN_RXD_INT_EN_ 0x00100000
+#define INT_EN_GPT_INT_EN_ 0x00080000
+#define INT_EN_PHY_INT_EN_ 0x00040000
+#define INT_EN_PME_INT_EN_ 0x00020000
+#define INT_EN_TXSO_EN_ 0x00010000
+#define INT_EN_RWT_EN_ 0x00008000
+#define INT_EN_RXE_EN_ 0x00004000
+#define INT_EN_TXE_EN_ 0x00002000
+#define INT_EN_TDFU_EN_ 0x00000800
+#define INT_EN_TDFO_EN_ 0x00000400
+#define INT_EN_TDFA_EN_ 0x00000200
+#define INT_EN_TSFF_EN_ 0x00000100
+#define INT_EN_TSFL_EN_ 0x00000080
+#define INT_EN_RXDF_EN_ 0x00000040
+#define INT_EN_RDFL_EN_ 0x00000020
+#define INT_EN_RSFF_EN_ 0x00000010
+#define INT_EN_RSFL_EN_ 0x00000008
+#define INT_EN_GPIO2_INT_ 0x00000004
+#define INT_EN_GPIO1_INT_ 0x00000002
+#define INT_EN_GPIO0_INT_ 0x00000001
+
+#define BYTE_TEST 0x64
+
+#define FIFO_INT 0x68
+#define FIFO_INT_TX_AVAIL_LEVEL_ 0xFF000000
+#define FIFO_INT_TX_STS_LEVEL_ 0x00FF0000
+#define FIFO_INT_RX_AVAIL_LEVEL_ 0x0000FF00
+#define FIFO_INT_RX_STS_LEVEL_ 0x000000FF
+
+#define RX_CFG 0x6C
+#define RX_CFG_RX_END_ALGN_ 0xC0000000
+#define RX_CFG_RX_END_ALGN4_ 0x00000000
+#define RX_CFG_RX_END_ALGN16_ 0x40000000
+#define RX_CFG_RX_END_ALGN32_ 0x80000000
+#define RX_CFG_RX_DMA_CNT_ 0x0FFF0000
+#define RX_CFG_RX_DUMP_ 0x00008000
+#define RX_CFG_RXDOFF_ 0x00001F00
+
+#define TX_CFG 0x70
+#define TX_CFG_TXS_DUMP_ 0x00008000
+#define TX_CFG_TXD_DUMP_ 0x00004000
+#define TX_CFG_TXSAO_ 0x00000004
+#define TX_CFG_TX_ON_ 0x00000002
+#define TX_CFG_STOP_TX_ 0x00000001
+
+#define HW_CFG 0x74
+#define HW_CFG_TTM_ 0x00200000
+#define HW_CFG_SF_ 0x00100000
+#define HW_CFG_TX_FIF_SZ_ 0x000F0000
+#define HW_CFG_TR_ 0x00003000
+#define HW_CFG_SRST_ 0x00000001
+
+/* only available on 115/117 */
+#define HW_CFG_PHY_CLK_SEL_ 0x00000060
+#define HW_CFG_PHY_CLK_SEL_INT_PHY_ 0x00000000
+#define HW_CFG_PHY_CLK_SEL_EXT_PHY_ 0x00000020
+#define HW_CFG_PHY_CLK_SEL_CLK_DIS_ 0x00000040
+#define HW_CFG_SMI_SEL_ 0x00000010
+#define HW_CFG_EXT_PHY_DET_ 0x00000008
+#define HW_CFG_EXT_PHY_EN_ 0x00000004
+#define HW_CFG_SRST_TO_ 0x00000002
+
+/* only available on 116/118 */
+#define HW_CFG_32_16_BIT_MODE_ 0x00000004
+
+#define RX_DP_CTRL 0x78
+#define RX_DP_CTRL_RX_FFWD_ 0x80000000
+
+#define RX_FIFO_INF 0x7C
+#define RX_FIFO_INF_RXSUSED_ 0x00FF0000
+#define RX_FIFO_INF_RXDUSED_ 0x0000FFFF
+
+#define TX_FIFO_INF 0x80
+#define TX_FIFO_INF_TSUSED_ 0x00FF0000
+#define TX_FIFO_INF_TDFREE_ 0x0000FFFF
+
+#define PMT_CTRL 0x84
+#define PMT_CTRL_PM_MODE_ 0x00003000
+#define PMT_CTRL_PM_MODE_D0_ 0x00000000
+#define PMT_CTRL_PM_MODE_D1_ 0x00001000
+#define PMT_CTRL_PM_MODE_D2_ 0x00002000
+#define PMT_CTRL_PM_MODE_D3_ 0x00003000
+#define PMT_CTRL_PHY_RST_ 0x00000400
+#define PMT_CTRL_WOL_EN_ 0x00000200
+#define PMT_CTRL_ED_EN_ 0x00000100
+#define PMT_CTRL_PME_TYPE_ 0x00000040
+#define PMT_CTRL_WUPS_ 0x00000030
+#define PMT_CTRL_WUPS_NOWAKE_ 0x00000000
+#define PMT_CTRL_WUPS_ED_ 0x00000010
+#define PMT_CTRL_WUPS_WOL_ 0x00000020
+#define PMT_CTRL_WUPS_MULTI_ 0x00000030
+#define PMT_CTRL_PME_IND_ 0x00000008
+#define PMT_CTRL_PME_POL_ 0x00000004
+#define PMT_CTRL_PME_EN_ 0x00000002
+#define PMT_CTRL_READY_ 0x00000001
+
+#define GPIO_CFG 0x88
+#define GPIO_CFG_LED3_EN_ 0x40000000
+#define GPIO_CFG_LED2_EN_ 0x20000000
+#define GPIO_CFG_LED1_EN_ 0x10000000
+#define GPIO_CFG_GPIO2_INT_POL_ 0x04000000
+#define GPIO_CFG_GPIO1_INT_POL_ 0x02000000
+#define GPIO_CFG_GPIO0_INT_POL_ 0x01000000
+#define GPIO_CFG_EEPR_EN_ 0x00700000
+#define GPIO_CFG_GPIOBUF2_ 0x00040000
+#define GPIO_CFG_GPIOBUF1_ 0x00020000
+#define GPIO_CFG_GPIOBUF0_ 0x00010000
+#define GPIO_CFG_GPIODIR2_ 0x00000400
+#define GPIO_CFG_GPIODIR1_ 0x00000200
+#define GPIO_CFG_GPIODIR0_ 0x00000100
+#define GPIO_CFG_GPIOD4_ 0x00000020
+#define GPIO_CFG_GPIOD3_ 0x00000010
+#define GPIO_CFG_GPIOD2_ 0x00000004
+#define GPIO_CFG_GPIOD1_ 0x00000002
+#define GPIO_CFG_GPIOD0_ 0x00000001
+
+#define GPT_CFG 0x8C
+#define GPT_CFG_TIMER_EN_ 0x20000000
+#define GPT_CFG_GPT_LOAD_ 0x0000FFFF
+
+#define GPT_CNT 0x90
+#define GPT_CNT_GPT_CNT_ 0x0000FFFF
+
+#define ENDIAN 0x98
+
+#define FREE_RUN 0x9C
+
+#define RX_DROP 0xA0
+
+#define MAC_CSR_CMD 0xA4
+#define MAC_CSR_CMD_CSR_BUSY_ 0x80000000
+#define MAC_CSR_CMD_R_NOT_W_ 0x40000000
+#define MAC_CSR_CMD_CSR_ADDR_ 0x000000FF
+
+#define MAC_CSR_DATA 0xA8
+
+#define AFC_CFG 0xAC
+#define AFC_CFG_AFC_HI_ 0x00FF0000
+#define AFC_CFG_AFC_LO_ 0x0000FF00
+#define AFC_CFG_BACK_DUR_ 0x000000F0
+#define AFC_CFG_FCMULT_ 0x00000008
+#define AFC_CFG_FCBRD_ 0x00000004
+#define AFC_CFG_FCADD_ 0x00000002
+#define AFC_CFG_FCANY_ 0x00000001
+
+#define E2P_CMD 0xB0
+#define E2P_CMD_EPC_BUSY_ 0x80000000
+#define E2P_CMD_EPC_CMD_ 0x70000000
+#define E2P_CMD_EPC_CMD_READ_ 0x00000000
+#define E2P_CMD_EPC_CMD_EWDS_ 0x10000000
+#define E2P_CMD_EPC_CMD_EWEN_ 0x20000000
+#define E2P_CMD_EPC_CMD_WRITE_ 0x30000000
+#define E2P_CMD_EPC_CMD_WRAL_ 0x40000000
+#define E2P_CMD_EPC_CMD_ERASE_ 0x50000000
+#define E2P_CMD_EPC_CMD_ERAL_ 0x60000000
+#define E2P_CMD_EPC_CMD_RELOAD_ 0x70000000
+#define E2P_CMD_EPC_TIMEOUT_ 0x00000200
+#define E2P_CMD_MAC_ADDR_LOADED_ 0x00000100
+#define E2P_CMD_EPC_ADDR_ 0x000000FF
+
+#define E2P_DATA 0xB4
+#define E2P_DATA_EEPROM_DATA_ 0x000000FF
+#define LAN_REGISTER_EXTENT 0x00000100
+
+/*
+ * MAC Control and Status Register (Indirect Address)
+ * Offset (through the MAC_CSR CMD and DATA port)
+ */
+#define MAC_CR 0x01
+#define MAC_CR_RXALL_ 0x80000000
+#define MAC_CR_HBDIS_ 0x10000000
+#define MAC_CR_RCVOWN_ 0x00800000
+#define MAC_CR_LOOPBK_ 0x00200000
+#define MAC_CR_FDPX_ 0x00100000
+#define MAC_CR_MCPAS_ 0x00080000
+#define MAC_CR_PRMS_ 0x00040000
+#define MAC_CR_INVFILT_ 0x00020000
+#define MAC_CR_PASSBAD_ 0x00010000
+#define MAC_CR_HFILT_ 0x00008000
+#define MAC_CR_HPFILT_ 0x00002000
+#define MAC_CR_LCOLL_ 0x00001000
+#define MAC_CR_BCAST_ 0x00000800
+#define MAC_CR_DISRTY_ 0x00000400
+#define MAC_CR_PADSTR_ 0x00000100
+#define MAC_CR_BOLMT_MASK_ 0x000000C0
+#define MAC_CR_DFCHK_ 0x00000020
+#define MAC_CR_TXEN_ 0x00000008
+#define MAC_CR_RXEN_ 0x00000004
+
+#define ADDRH 0x02
+
+#define ADDRL 0x03
+
+#define HASHH 0x04
+
+#define HASHL 0x05
+
+#define MII_ACC 0x06
+#define MII_ACC_PHY_ADDR_ 0x0000F800
+#define MII_ACC_MIIRINDA_ 0x000007C0
+#define MII_ACC_MII_WRITE_ 0x00000002
+#define MII_ACC_MII_BUSY_ 0x00000001
+
+#define MII_DATA 0x07
+
+#define FLOW 0x08
+#define FLOW_FCPT_ 0xFFFF0000
+#define FLOW_FCPASS_ 0x00000004
+#define FLOW_FCEN_ 0x00000002
+#define FLOW_FCBSY_ 0x00000001
+
+#define VLAN1 0x09
+
+#define VLAN2 0x0A
+
+#define WUFF 0x0B
+
+#define WUCSR 0x0C
+#define WUCSR_GUE_ 0x00000200
+#define WUCSR_WUFR_ 0x00000040
+#define WUCSR_MPR_ 0x00000020
+#define WUCSR_WAKE_EN_ 0x00000004
+#define WUCSR_MPEN_ 0x00000002
+
+/*
+ * Phy definitions (vendor-specific)
+ */
+#define LAN9118_PHY_ID 0x00C0001C
+
+#define MII_INTSTS 0x1D
+
+#define MII_INTMSK 0x1E
+#define PHY_INTMSK_AN_RCV_ (1 << 1)
+#define PHY_INTMSK_PDFAULT_ (1 << 2)
+#define PHY_INTMSK_AN_ACK_ (1 << 3)
+#define PHY_INTMSK_LNKDOWN_ (1 << 4)
+#define PHY_INTMSK_RFAULT_ (1 << 5)
+#define PHY_INTMSK_AN_COMP_ (1 << 6)
+#define PHY_INTMSK_ENERGYON_ (1 << 7)
+#define PHY_INTMSK_DEFAULT_ (PHY_INTMSK_ENERGYON_ | \
+ PHY_INTMSK_AN_COMP_ | \
+ PHY_INTMSK_RFAULT_ | \
+ PHY_INTMSK_LNKDOWN_)
+
+#define ADVERTISE_PAUSE_ALL (ADVERTISE_PAUSE_CAP | \
+ ADVERTISE_PAUSE_ASYM)
+
+#define LPA_PAUSE_ALL (LPA_PAUSE_CAP | \
+ LPA_PAUSE_ASYM)
+
+#endif /* __SMSC911X_H__ */
--
1.4.0
^ permalink raw reply related [flat|nested] 20+ messages in thread
* Re: SMSC LAN911x and LAN921x vendor driver
[not found] <44ED2008.9000109@garzik.org>
@ 2006-08-24 11:09 ` Steve.Glendinning
0 siblings, 0 replies; 20+ messages in thread
From: Steve.Glendinning @ 2006-08-24 11:09 UTC (permalink / raw)
To: Jeff Garzik; +Cc: Ian.Saturley, shemminger, netdev, Bahadir Balban
Hi Jeff,
> What are the arguments for adding a duplicate driver, again?
The current driver is completely arm specific (does not even compile on
!arm). While arm is certainly a popular arch for us, we also have many
customers on sh, x86 and others. Currently there is no in-kernel support
for these people. Our smsc911x driver is tested and supported on arm, sh,
i386.
smsc911x is a shorter, simpler driver, and I believe the coding style to
be cleaner and easier to follow.
smsc911x contains support for the new LAN921x family, as well as LAN911x.
smsc911x contains important workarounds for currently known hardware
issues. Anyone using the current in-kernel driver with multicast will
have problems.
Many of our customers use our proprietary drivers (GPL, but the coding
style would make you scream), and we would like to migrate them over to a
standard in-kernel driver - it would make support easier and everyone can
benefit from ongoing driver improvements.
Regards,
--
Steve Glendinning
SMSC GmbH
m: +44 777 933 9124
e: steve.glendinning@smsc.com
^ permalink raw reply [flat|nested] 20+ messages in thread
end of thread, other threads:[~2006-08-24 11:10 UTC | newest]
Thread overview: 20+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
[not found] <7ac1e90c0607140711p4529d4fbh98d3e9edf2c7a52f@mail.gmail.com>
2006-07-14 18:50 ` smsc911x driver Stephen Hemminger
2006-07-28 11:48 ` SMSC LAN911x and LAN921x vendor driver Steve Glendinning
2006-07-28 14:31 ` Stephen Hemminger
2006-07-28 21:38 ` Francois Romieu
2006-07-29 0:38 ` Stephen Hemminger
2006-07-31 20:20 ` Steve.Glendinning
2006-08-01 15:12 ` [PATCH] " Steve Glendinning
2006-08-01 15:33 ` John W. Linville
2006-08-02 19:23 ` Steve.Glendinning
2006-08-02 19:51 ` John W. Linville
2006-08-01 18:28 ` Scott Murray
2006-08-01 19:27 ` Steve.Glendinning
2006-08-01 23:51 ` Scott Murray
2006-08-03 15:26 ` Steve.Glendinning
2006-08-03 21:07 ` Scott Murray
2006-08-01 21:40 ` Francois Romieu
2006-08-02 19:39 ` Steve.Glendinning
2006-08-02 21:07 ` Francois Romieu
2006-08-04 11:29 ` Steve Glendinning
[not found] <44ED2008.9000109@garzik.org>
2006-08-24 11:09 ` Steve.Glendinning
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