[PATCH 02/14] m68k/atari EtherNAT: remove original EtherNAT driver

Michael Schmitz
2013-03-25T01:16:56Z

drivers/net/ethernet/smsc/Kconfig | 10 -
drivers/net/ethernet/smsc/Makefile | 1 -
drivers/net/ethernet/smsc/atari_91C111.c | 2434 ------------------------------
3 files changed, 0 insertions(+), 2445 deletions(-)
delete mode 100644 drivers/net/ethernet/smsc/atari_91C111.c

diff --git a/drivers/net/ethernet/smsc/Kconfig b/drivers/net/ethernet/smsc/Kconfig
index 01893aa..bb1e8f3 100644
--- a/drivers/net/ethernet/smsc/Kconfig
+++ b/drivers/net/ethernet/smsc/Kconfig
@@ -19,16 +19,6 @@ config NET_VENDOR_SMSC

if NET_VENDOR_SMSC

-config ATARI_ETHERNAT
- tristate "Atari EtherNAT Ethernet support"
- select CRC32
- select MII
- depends on ATARI
- help
- Say Y to include support for the EtherNAT network adapter for the
- CT/60 extension port. The driver works by polling instead of
- interrupts, so it is quite slow.
-
config SMC9194
tristate "SMC 9194 support"
depends on (ISA || MAC && BROKEN)
diff --git a/drivers/net/ethernet/smsc/Makefile b/drivers/net/ethernet/smsc/Makefile
index ef228db..f3438de 100644
--- a/drivers/net/ethernet/smsc/Makefile
+++ b/drivers/net/ethernet/smsc/Makefile
@@ -2,7 +2,6 @@
# Makefile for the SMSC network device drivers.
#

-obj-$(CONFIG_ATARI_ETHERNAT) += atari_91C111.o
obj-$(CONFIG_SMC9194) += smc9194.o
obj-$(CONFIG_SMC91X) += smc91x.o
obj-$(CONFIG_PCMCIA_SMC91C92) += smc91c92_cs.o
diff --git a/drivers/net/ethernet/smsc/atari_91C111.c b/drivers/net/ethernet/smsc/atari_91C111.c
deleted file mode 100644
index 2708864..0000000
--- a/drivers/net/ethernet/smsc/atari_91C111.c
+++ /dev/null
@@ -1,2434 +0,0 @@
-/*
- * smc91x.c
- * This is a driver for SMSC's 91C9x/91C1xx single-chip Ethernet devices.
- *
- * Copyright (C) 1996 by Erik Stahlman
- * Copyright (C) 2001 Standard Microsystems Corporation
- * Developed by Simple Network Magic Corporation
- * Copyright (C) 2003 Monta Vista Software, Inc.
- * Unified SMC91x driver by Nicolas Pitre
- *
- * 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
- *
- * Arguments:
- * io = for the base address
- * irq = for the IRQ
- * nowait = 0 for normal wait states, 1 eliminates additional wait states
- *
- * original author:
- * Erik Stahlman <erik@vt.edu>
- *
- * hardware multicast code:
- * Peter Cammaert <pc@denkart.be>
- *
- * contributors:
- * Daris A Nevil <dnevil@snmc.com>
- * Nicolas Pitre <nico@fluxnic.net>
- * Russell King <rmk@arm.linux.org.uk>
- *
- * History:
- * 08/20/00 Arnaldo Melo fix kfree(skb) in smc_hardware_send_packet
- * 12/15/00 Christian Jullien fix "Warning: kfree_skb on hard IRQ"
- * 03/16/01 Daris A Nevil modified smc9194.c for use with LAN91C111
- * 08/22/01 Scott Anderson merge changes from smc9194 to smc91111
- * 08/21/01 Pramod B Bhardwaj added support for RevB of LAN91C111
- * 12/20/01 Jeff Sutherland initial port to Xscale PXA with DMA support
- * 04/07/03 Nicolas Pitre unified SMC91x driver, killed irq races,
- * more bus abstraction, big cleanup, etc.
- * 29/09/03 Russell King - add driver model support
- * - ethtool support
- * - convert to use generic MII interface
- * - add link up/down notification
- * - don't try to handle full negotiation in
- * smc_phy_configure
- * - clean up (and fix stack overrun) in PHY
- * MII read/write functions
- * 22/09/04 Nicolas Pitre big update (see commit log for details)
- */
-static const char version[] =
- "smc91x.c: v1.1, sep 22 2004 by Nicolas Pitre <nico@cam.org>\n";
-
-/* Debugging level */
-#ifndef SMC_DEBUG
-#define SMC_DEBUG 0
-#endif
-
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/errno.h>
-#include <linux/ioport.h>
-#include <linux/crc32.h>
-#include <linux/platform_device.h>
-#include <linux/spinlock.h>
-#include <linux/ethtool.h>
-#include <linux/mii.h>
-#include <linux/workqueue.h>
-
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-
-#include <asm/hwtest.h>
-#include <asm/atariints.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-
-#include "smc91x.h"
-
-#ifdef CONFIG_ISA
-/*
- * the LAN91C111 can be at any of the following port addresses. To change,
- * for a slightly different card, you can add it to the array. Keep in
- * mind that the array must end in zero.
- */
-static unsigned int smc_portlist[] __initdata = {
- 0x200, 0x220, 0x240, 0x260, 0x280, 0x2A0, 0x2C0, 0x2E0,
- 0x300, 0x320, 0x340, 0x360, 0x380, 0x3A0, 0x3C0, 0x3E0, 0
-};
-
-/* MSch FIXME: endif CONFIG_ISA here? */
-
-#ifndef SMC_IOADDR
-# define SMC_IOADDR -1
-#endif
-static unsigned long io = SMC_IOADDR;
-module_param(io, ulong, 0400);
-MODULE_PARM_DESC(io, "I/O base address");
-
-#ifndef SMC_IRQ
-# define SMC_IRQ -1
-#endif
-static int irq = SMC_IRQ;
-module_param(irq, int, 0400);
-MODULE_PARM_DESC(irq, "IRQ number");
-
-#endif /* CONFIG_ISA */
-
-#ifndef SMC_NOWAIT
-# define SMC_NOWAIT 0
-#endif
-static int nowait = SMC_NOWAIT;
-module_param(nowait, int, 0400);
-MODULE_PARM_DESC(nowait, "set to 1 for no wait state");
-
-/*
- * Transmit timeout, default 5 seconds.
- */
-static int watchdog = 1000;
-module_param(watchdog, int, 0400);
-MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds");
-
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:smc91x");
-
-/*
- * The internal workings of the driver. If you are changing anything
- * here with the SMC stuff, you should have the datasheet and know
- * what you are doing.
- */
-#define CARDNAME "smc91x"
-
-/*
- * Use power-down feature of the chip
- */
-#define POWER_DOWN 1
-
-/*
- * Wait time for memory to be free. This probably shouldn't be
- * tuned that much, as waiting for this means nothing else happens
- * in the system
- */
-#define MEMORY_WAIT_TIME 16
-
-/*
- * The maximum number of processing loops allowed for each call to the
- * IRQ handler.
- */
-#define MAX_IRQ_LOOPS 8
-
-/*
- * This selects whether TX packets are sent one by one to the SMC91x internal
- * memory and throttled until transmission completes. This may prevent
- * RX overruns a litle by keeping much of the memory free for RX packets
- * but to the expense of reduced TX throughput and increased IRQ overhead.
- * Note this is not a cure for a too slow data bus or too high IRQ latency.
- */
-#define THROTTLE_TX_PKTS 0 /* MSch FIXME 1 */
-
-/*
- * The MII clock high/low times. 2x this number gives the MII clock period
- * in microseconds. (was 50, but this gives 6.4ms for each MII transaction!)
- */
-#define MII_DELAY 1
-
-#if SMC_DEBUG > 0
-#define DBG(n, args...) \
- do { \
- if (SMC_DEBUG >= (n)) \
- printk(args); \
- } while (0)
-
-#define PRINTK(args...) printk(args)
-#else
-#define DBG(n, args...) do { } while(0)
-#define PRINTK(args...) printk(KERN_DEBUG args)
-#endif
-
-#if SMC_DEBUG > 3
-static void PRINT_PKT(u_char *buf, int length)
-{
- int i;
- int remainder;
- int lines;
-
- lines = length / 16;
- remainder = length % 16;
-
- for (i = 0; i < lines ; i ++) {
- int cur;
- for (cur = 0; cur < 8; cur++) {
- u_char a, b;
- a = *buf++;
- b = *buf++;
- printk("%02x%02x ", a, b);
- }
- printk("\n");
- }
- for (i = 0; i < remainder/2 ; i++) {
- u_char a, b;
- a = *buf++;
- b = *buf++;
- printk("%02x%02x ", a, b);
- }
- printk("\n");
-}
-#else
-#define PRINT_PKT(x...) do { } while(0)
-#endif
-
-
-/* this enables an interrupt in the interrupt mask register */
-#define SMC_ENABLE_INT(lp, x) do { \
- unsigned char mask; \
- unsigned long smc_enable_flags; \
- spin_lock_irqsave(&lp->lock, smc_enable_flags); \
- mask = SMC_GET_INT_MASK(lp); \
- mask |= (x); \
- SMC_SET_INT_MASK(lp, mask); \
- spin_unlock_irqrestore(&lp->lock, smc_enable_flags); \
-} while (0)
-
-/* this disables an interrupt from the interrupt mask register */
-#define SMC_DISABLE_INT(lp, x) do { \
- unsigned char mask; \
- unsigned long smc_disable_flags; \
- spin_lock_irqsave(&lp->lock, smc_disable_flags); \
- mask = SMC_GET_INT_MASK(lp); \
- mask &= ~(x); \
- SMC_SET_INT_MASK(lp, mask); \
- spin_unlock_irqrestore(&lp->lock, smc_disable_flags); \
-} while (0)
-
-/*
- * Wait while MMU is busy. This is usually in the order of a few nanosecs
- * if at all, but let's avoid deadlocking the system if the hardware
- * decides to go south.
- */
-#define SMC_WAIT_MMU_BUSY(lp) do { \
- if (unlikely(SMC_GET_MMU_CMD(lp) & MC_BUSY)) { \
- unsigned long timeout = jiffies + 2; \
- while (SMC_GET_MMU_CMD(lp) & MC_BUSY) { \
- if (time_after(jiffies, timeout)) { \
- printk("%s: timeout %s line %d\n", \
- dev->name, __FILE__, __LINE__); \
- break; \
- } \
- cpu_relax(); \
- } \
- } \
-} while (0)
-
-/*
- * MSch: Interrupt wrapper to prevent calling the main interrupt handler
- * from MFP timer D routine before device has been opened.
- */
-
-static irqreturn_t smc_interrupt(int irq, void *dev_id);
-
-static irqreturn_t atari_ethernat_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = (struct net_device *) dev_id;
- if (netif_running(dev)) {
- return smc_interrupt(dev->irq, dev);
- }
- return IRQ_HANDLED;
-}
-
-static int period = 0;
-module_param(period, int, 0);
-MODULE_PARM_DESC(period, "Timer D period (123 for 200Hz)");
-
-/*
- * this does a soft reset on the device
- */
-static void smc_reset(struct net_device *dev)
-{
- struct smc_local *lp = netdev_priv(dev);
- void __iomem *ioaddr = lp->base;
- unsigned int ctl, cfg;
- struct sk_buff *pending_skb;
-
- DBG(2, "%s: %s\n", dev->name, __func__);
-
- /* Disable all interrupts, block TX tasklet */
- spin_lock_irq(&lp->lock);
- SMC_SELECT_BANK(lp, 2);
- SMC_SET_INT_MASK(lp, 0);
- pending_skb = lp->pending_tx_skb;
- lp->pending_tx_skb = NULL;
- spin_unlock_irq(&lp->lock);
-
- /* free any pending tx skb */
- if (pending_skb) {
- dev_kfree_skb(pending_skb);
- dev->stats.tx_errors++;
- dev->stats.tx_aborted_errors++;
- }
-
- /*
- * This resets the registers mostly to defaults, but doesn't
- * affect EEPROM. That seems unnecessary
- */
- SMC_SELECT_BANK(lp, 0);
- SMC_SET_RCR(lp, RCR_SOFTRST);
-
- /*
- * Setup the Configuration Register
- * This is necessary because the CONFIG_REG is not affected
- * by a soft reset
- */
- SMC_SELECT_BANK(lp, 1);
-
- cfg = CONFIG_DEFAULT;
-
- /*
- * Setup for fast accesses if requested. If the card/system
- * can't handle it then there will be no recovery except for
- * a hard reset or power cycle
- */
- if (lp->cfg.flags & SMC91X_NOWAIT)
- cfg |= CONFIG_NO_WAIT;
-
- /*
- * Release from possible power-down state
- * Configuration register is not affected by Soft Reset
- */
- cfg |= CONFIG_EPH_POWER_EN;
-
- SMC_SET_CONFIG(lp, cfg);
-
- /* this should pause enough for the chip to be happy */
- /*
- * elaborate? What does the chip _need_? --jgarzik
- *
- * This seems to be undocumented, but something the original
- * driver(s) have always done. Suspect undocumented timing
- * info/determined empirically. --rmk
- */
- udelay(1);
-
- /* Disable transmit and receive functionality */
- SMC_SELECT_BANK(lp, 0);
- SMC_SET_RCR(lp, RCR_CLEAR);
- SMC_SET_TCR(lp, TCR_CLEAR);
-
- SMC_SELECT_BANK(lp, 1);
- ctl = SMC_GET_CTL(lp) | CTL_LE_ENABLE;
-
- /*
- * Set the control register to automatically release successfully
- * transmitted packets, to make the best use out of our limited
- * memory
- */
- if(!THROTTLE_TX_PKTS)
- ctl |= CTL_AUTO_RELEASE;
- else
- ctl &= ~CTL_AUTO_RELEASE;
- SMC_SET_CTL(lp, ctl);
-
- /* Reset the MMU */
- SMC_SELECT_BANK(lp, 2);
- SMC_SET_MMU_CMD(lp, MC_RESET);
- SMC_WAIT_MMU_BUSY(lp);
-}
-
-/*
- * Enable Interrupts, Receive, and Transmit
- */
-static void smc_enable(struct net_device *dev)
-{
- struct smc_local *lp = netdev_priv(dev);
- void __iomem *ioaddr = lp->base;
- int mask;
-
- DBG(2, "%s: %s\n", dev->name, __func__);
-
- /* see the header file for options in TCR/RCR DEFAULT */
- SMC_SELECT_BANK(lp, 0);
- SMC_SET_TCR(lp, lp->tcr_cur_mode);
- SMC_SET_RCR(lp, lp->rcr_cur_mode);
-
- SMC_SELECT_BANK(lp, 1);
- SMC_SET_MAC_ADDR(lp, dev->dev_addr);
-
- /* now, enable interrupts */
- mask = IM_EPH_INT|IM_RX_OVRN_INT|IM_RCV_INT;
- if (lp->version >= (CHIP_91100 << 4))
- mask |= IM_MDINT;
- SMC_SELECT_BANK(lp, 2);
- SMC_SET_INT_MASK(lp, mask);
-
- /*
- * From this point the register bank must _NOT_ be switched away
- * to something else than bank 2 without proper locking against
- * races with any tasklet or interrupt handlers until smc_shutdown()
- * or smc_reset() is called.
- */
-}
-
-/*
- * this puts the device in an inactive state
- */
-static void smc_shutdown(struct net_device *dev)
-{
- struct smc_local *lp = netdev_priv(dev);
- void __iomem *ioaddr = lp->base;
- struct sk_buff *pending_skb;
-
- DBG(2, "%s: %s\n", CARDNAME, __func__);
-
- /* no more interrupts for me */
- spin_lock_irq(&lp->lock);
- SMC_SELECT_BANK(lp, 2);
- SMC_SET_INT_MASK(lp, 0);
- pending_skb = lp->pending_tx_skb;
- lp->pending_tx_skb = NULL;
- spin_unlock_irq(&lp->lock);
- if (pending_skb)
- dev_kfree_skb(pending_skb);
-
- /* and tell the card to stay away from that nasty outside world */
- SMC_SELECT_BANK(lp, 0);
- SMC_SET_RCR(lp, RCR_CLEAR);
- SMC_SET_TCR(lp, TCR_CLEAR);
-
-#ifdef POWER_DOWN
- /* finally, shut the chip down */
- SMC_SELECT_BANK(lp, 1);
- SMC_SET_CONFIG(lp, SMC_GET_CONFIG(lp) & ~CONFIG_EPH_POWER_EN);
-#endif
-}
-
-/*
- * This is the procedure to handle the receipt of a packet.
- */
-static inline void smc_rcv(struct net_device *dev)
-{
- struct smc_local *lp = netdev_priv(dev);
- void __iomem *ioaddr = lp->base;
- unsigned int packet_number, status, packet_len;
-
- DBG(3, "%s: %s\n", dev->name, __func__);
-
- packet_number = SMC_GET_RXFIFO(lp);
- if (unlikely(packet_number & RXFIFO_REMPTY)) {
- PRINTK("%s: smc_rcv with nothing on FIFO.\n", dev->name);
- return;
- }
-
- /* read from start of packet */
- SMC_SET_PTR(lp, PTR_READ | PTR_RCV | PTR_AUTOINC);
-
- /* First two words are status and packet length */
- SMC_GET_PKT_HDR(lp, status, packet_len);
- packet_len &= 0x07ff; /* mask off top bits */
- DBG(2, "%s: RX PNR 0x%x STATUS 0x%04x LENGTH 0x%04x (%d)\n",
- dev->name, packet_number, status,
- packet_len, packet_len);
-
- back:
- if (unlikely(packet_len < 6 || status & RS_ERRORS)) {
- if (status & RS_TOOLONG && packet_len <= (1514 + 4 + 6)) {
- /* accept VLAN packets */
- status &= ~RS_TOOLONG;
- goto back;
- }
- if (packet_len < 6) {
- /* bloody hardware */
- printk(KERN_ERR "%s: fubar (rxlen %u status %x\n",
- dev->name, packet_len, status);
- status |= RS_TOOSHORT;
- }
- SMC_WAIT_MMU_BUSY(lp);
- SMC_SET_MMU_CMD(lp, MC_RELEASE);
- dev->stats.rx_errors++;
- if (status & RS_ALGNERR)
- dev->stats.rx_frame_errors++;
- if (status & (RS_TOOSHORT | RS_TOOLONG))
- dev->stats.rx_length_errors++;
- if (status & RS_BADCRC)
- dev->stats.rx_crc_errors++;
- } else {
- struct sk_buff *skb;
- unsigned char *data;
- unsigned int data_len;
-
- /* set multicast stats */
- if (status & RS_MULTICAST)
- dev->stats.multicast++;
-
- /*
- * Actual payload is packet_len - 6 (or 5 if odd byte).
- * We want skb_reserve(2) and the final ctrl word
- * (2 bytes, possibly containing the payload odd byte).
- * Furthermore, we add 2 bytes to allow rounding up to
- * multiple of 4 bytes on 32 bit buses.
- * Hence packet_len - 6 + 2 + 2 + 2.
- */
- skb = dev_alloc_skb(packet_len);
- if (unlikely(skb == NULL)) {
- printk(KERN_NOTICE "%s: Low memory, packet dropped.\n",
- dev->name);
- SMC_WAIT_MMU_BUSY(lp);
- SMC_SET_MMU_CMD(lp, MC_RELEASE);
- dev->stats.rx_dropped++;
- return;
- }
-
- /* Align IP header to 32 bits */
- skb_reserve(skb, 2);
-
- /* BUG: the LAN91C111 rev A never sets this bit. Force it. */
- if (lp->version == 0x90)
- status |= RS_ODDFRAME;
-
- /*
- * If odd length: packet_len - 5,
- * otherwise packet_len - 6.
- * With the trailing ctrl byte it's packet_len - 4.
- */
- data_len = packet_len - ((status & RS_ODDFRAME) ? 5 : 6);
- data = skb_put(skb, data_len);
- SMC_PULL_DATA(lp, data, packet_len - 4);
-
- SMC_WAIT_MMU_BUSY(lp);
- SMC_SET_MMU_CMD(lp, MC_RELEASE);
-
- PRINT_PKT(data, packet_len - 4);
-
- dev->last_rx = jiffies;
- skb->protocol = eth_type_trans(skb, dev);
- netif_rx(skb);
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += data_len;
- }
-}
-
-#ifdef CONFIG_SMP
-/*
- * On SMP we have the following problem:
- *
- * A = smc_hardware_send_pkt()
- * B = smc_hard_start_xmit()
- * C = smc_interrupt()
- *
- * A and B can never be executed simultaneously. However, at least on UP,
- * it is possible (and even desirable) for C to interrupt execution of
- * A or B in order to have better RX reliability and avoid overruns.
- * C, just like A and B, must have exclusive access to the chip and
- * each of them must lock against any other concurrent access.
- * Unfortunately this is not possible to have C suspend execution of A or
- * B taking place on another CPU. On UP this is no an issue since A and B
- * are run from softirq context and C from hard IRQ context, and there is
- * no other CPU where concurrent access can happen.
- * If ever there is a way to force at least B and C to always be executed
- * on the same CPU then we could use read/write locks to protect against
- * any other concurrent access and C would always interrupt B. But life
- * isn't that easy in a SMP world...
- */
-#define smc_special_trylock(lock, flags) \
-({ \
- int __ret; \
- local_irq_save(flags); \
- __ret = spin_trylock(lock); \
- if (!__ret) \
- local_irq_restore(flags); \
- __ret; \
-})
-#define smc_special_lock(lock, flags) spin_lock_irqsave(lock, flags)
-#define smc_special_unlock(lock, flags) spin_unlock_irqrestore(lock, flags)
-#else
-#define smc_special_trylock(lock, flags) (flags == flags)
-#define smc_special_lock(lock, flags) do { flags = 0; } while (0)
-#define smc_special_unlock(lock, flags) do { flags = 0; } while (0)
-#endif
-
-/*
- * MSch FIXME: add SMC_PUSH_DATA_BE(lp, p, l)
- */
-
-/*
- * This is called to actually send a packet to the chip.
- */
-static void smc_hardware_send_pkt(unsigned long data)
-{
- struct net_device *dev = (struct net_device *)data;
- struct smc_local *lp = netdev_priv(dev);
- void __iomem *ioaddr = lp->base;
- struct sk_buff *skb;
- unsigned int packet_no, len;
- unsigned char *buf;
- unsigned long flags;
-
- DBG(3, "%s: %s\n", dev->name, __func__);
-
- if (!smc_special_trylock(&lp->lock, flags)) {
- netif_stop_queue(dev);
- tasklet_schedule(&lp->tx_task);
- return;
- }
-
- skb = lp->pending_tx_skb;
- if (unlikely(!skb)) {
- smc_special_unlock(&lp->lock, flags);
- return;
- }
- lp->pending_tx_skb = NULL;
-
- packet_no = SMC_GET_AR(lp);
- if (unlikely(packet_no & AR_FAILED)) {
- printk("%s: Memory allocation failed.\n", dev->name);
- dev->stats.tx_errors++;
- dev->stats.tx_fifo_errors++;
- smc_special_unlock(&lp->lock, flags);
- goto done;
- }
-
- /* point to the beginning of the packet */
- SMC_SET_PN(lp, packet_no);
- SMC_SET_PTR(lp, PTR_AUTOINC);
-
- buf = skb->data;
- len = skb->len;
- DBG(2, "%s: TX PNR 0x%x LENGTH 0x%04x (%d) BUF 0x%p\n",
- dev->name, packet_no, len, len, buf);
- PRINT_PKT(buf, len);
-
- /*
- * Send the packet length (+6 for status words, length, and ctl.
- * The card will pad to 64 bytes with zeroes if packet is too small.
- */
- SMC_PUT_PKT_HDR(lp, 0, len + 6);
-
- /* send the actual data */
- SMC_PUSH_DATA(lp, buf, len & ~1);
-
- /* Send final ctl word with the last byte if there is one */
- SMC_outw(((len & 1) ? (0x2000 | buf[len-1]) : 0), ioaddr, DATA_REG(lp));
-
- /*
- * If THROTTLE_TX_PKTS is set, we stop the queue here. This will
- * have the effect of having at most one packet queued for TX
- * in the chip's memory at all time.
- *
- * If THROTTLE_TX_PKTS is not set then the queue is stopped only
- * when memory allocation (MC_ALLOC) does not succeed right away.
- */
- if (THROTTLE_TX_PKTS)
- netif_stop_queue(dev);
-
- /* queue the packet for TX */
- SMC_SET_MMU_CMD(lp, MC_ENQUEUE);
- smc_special_unlock(&lp->lock, flags);
-
- dev->trans_start = jiffies;
- dev->stats.tx_packets++;
- dev->stats.tx_bytes += len;
-
- SMC_ENABLE_INT(lp, IM_TX_INT | IM_TX_EMPTY_INT);
-
-done: if (!THROTTLE_TX_PKTS)
- netif_wake_queue(dev);
-
- dev_kfree_skb(skb);
-}
-
-/*
- * Since I am not sure if I will have enough room in the chip's ram
- * to store the packet, I call this routine which either sends it
- * now, or set the card to generates an interrupt when ready
- * for the packet.
- */
-static int smc_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct smc_local *lp = netdev_priv(dev);
- void __iomem *ioaddr = lp->base;
- unsigned int numPages, poll_count, status;
- unsigned long flags;
-
- DBG(3, "%s: %s\n", dev->name, __func__);
-
- BUG_ON(lp->pending_tx_skb != NULL);
-
- /*
- * The MMU wants the number of pages to be the number of 256 bytes
- * 'pages', minus 1 (since a packet can't ever have 0 pages :))
- *
- * The 91C111 ignores the size bits, but earlier models don't.
- *
- * Pkt size for allocating is data length +6 (for additional status
- * words, length and ctl)
- *
- * If odd size then last byte is included in ctl word.
- */
- numPages = ((skb->len & ~1) + (6 - 1)) >> 8;
- if (unlikely(numPages > 7)) {
- printk("%s: Far too big packet error.\n", dev->name);
- dev->stats.tx_errors++;
- dev->stats.tx_dropped++;
- dev_kfree_skb(skb);
- return NETDEV_TX_OK;
- }
-
- smc_special_lock(&lp->lock, flags);
-
- /* now, try to allocate the memory */
- SMC_SET_MMU_CMD(lp, MC_ALLOC | numPages);
-
- /*
- * Poll the chip for a short amount of time in case the
- * allocation succeeds quickly.
- */
- poll_count = MEMORY_WAIT_TIME;
- do {
- status = SMC_GET_INT(lp);
- if (status & IM_ALLOC_INT) {
- SMC_ACK_INT(lp, IM_ALLOC_INT);
- break;
- }
- } while (--poll_count);
-
- smc_special_unlock(&lp->lock, flags);
-
- lp->pending_tx_skb = skb;
- if (!poll_count) {
- /* oh well, wait until the chip finds memory later */
- netif_stop_queue(dev);
- DBG(2, "%s: TX memory allocation deferred.\n", dev->name);
- SMC_ENABLE_INT(lp, IM_ALLOC_INT);
- } else {
- /*
- * Allocation succeeded: push packet to the chip's own memory
- * immediately.
- */
- smc_hardware_send_pkt((unsigned long)dev);
- }
-
- return NETDEV_TX_OK;
-}
-
-/*
- * This handles a TX interrupt, which is only called when:
- * - a TX error occurred, or
- * - CTL_AUTO_RELEASE is not set and TX of a packet completed.
- */
-static void smc_tx(struct net_device *dev)
-{
- struct smc_local *lp = netdev_priv(dev);
- void __iomem *ioaddr = lp->base;
- unsigned int saved_packet, packet_no, tx_status, pkt_len;
-
- DBG(3, "%s: %s\n", dev->name, __func__);
-
- /* If the TX FIFO is empty then nothing to do */
- packet_no = SMC_GET_TXFIFO(lp);
- if (unlikely(packet_no & TXFIFO_TEMPTY)) {
- PRINTK("%s: smc_tx with nothing on FIFO.\n", dev->name);
- return;
- }
-
- /* select packet to read from */
- saved_packet = SMC_GET_PN(lp);
- SMC_SET_PN(lp, packet_no);
-
- /* read the first word (status word) from this packet */
- SMC_SET_PTR(lp, PTR_AUTOINC | PTR_READ);
- SMC_GET_PKT_HDR(lp, tx_status, pkt_len);
- DBG(2, "%s: TX STATUS 0x%04x PNR 0x%02x\n",
- dev->name, tx_status, packet_no);
-
- if (!(tx_status & ES_TX_SUC))
- dev->stats.tx_errors++;
-
- if (tx_status & ES_LOSTCARR)
- dev->stats.tx_carrier_errors++;
-
- if (tx_status & (ES_LATCOL | ES_16COL)) {
- PRINTK("%s: %s occurred on last xmit\n", dev->name,
- (tx_status & ES_LATCOL) ?
- "late collision" : "too many collisions");
- dev->stats.tx_window_errors++;
- if (!(dev->stats.tx_window_errors & 63) && net_ratelimit()) {
- printk(KERN_INFO "%s: unexpectedly large number of "
- "bad collisions. Please check duplex "
- "setting.\n", dev->name);
- }
- }
-
- /* kill the packet */
- SMC_WAIT_MMU_BUSY(lp);
- SMC_SET_MMU_CMD(lp, MC_FREEPKT);
-
- /* Don't restore Packet Number Reg until busy bit is cleared */
- SMC_WAIT_MMU_BUSY(lp);
- SMC_SET_PN(lp, saved_packet);
-
- /* re-enable transmit */
- SMC_SELECT_BANK(lp, 0);
- SMC_SET_TCR(lp, lp->tcr_cur_mode);
- SMC_SELECT_BANK(lp, 2);
-}
-
-
-/*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/
-
-static void smc_mii_out(struct net_device *dev, unsigned int val, int bits)
-{
- struct smc_local *lp = netdev_priv(dev);
- void __iomem *ioaddr = lp->base;
- unsigned int mii_reg, mask;
-
- mii_reg = SMC_GET_MII(lp) & ~(MII_MCLK | MII_MDOE | MII_MDO);
- mii_reg |= MII_MDOE;
-
- for (mask = 1 << (bits - 1); mask; mask >>= 1) {
- if (val & mask)
- mii_reg |= MII_MDO;
- else
- mii_reg &= ~MII_MDO;
-
- SMC_SET_MII(lp, mii_reg);
- udelay(MII_DELAY);
- SMC_SET_MII(lp, mii_reg | MII_MCLK);
- udelay(MII_DELAY);
- }
-}
-
-static unsigned int smc_mii_in(struct net_device *dev, int bits)
-{
- struct smc_local *lp = netdev_priv(dev);
- void __iomem *ioaddr = lp->base;
- unsigned int mii_reg, mask, val;
-
- mii_reg = SMC_GET_MII(lp) & ~(MII_MCLK | MII_MDOE | MII_MDO);
- SMC_SET_MII(lp, mii_reg);
-
- for (mask = 1 << (bits - 1), val = 0; mask; mask >>= 1) {
- if (SMC_GET_MII(lp) & MII_MDI)
- val |= mask;
-
- SMC_SET_MII(lp, mii_reg);
- udelay(MII_DELAY);
- SMC_SET_MII(lp, mii_reg | MII_MCLK);
- udelay(MII_DELAY);
- }
-
- return val;
-}
-
-/*
- * Reads a register from the MII Management serial interface
- */
-static int smc_phy_read(struct net_device *dev, int phyaddr, int phyreg)
-{
- struct smc_local *lp = netdev_priv(dev);
- void __iomem *ioaddr = lp->base;
- unsigned int phydata;
-
- SMC_SELECT_BANK(lp, 3);
-
- /* Idle - 32 ones */
- smc_mii_out(dev, 0xffffffff, 32);
-
- /* Start code (01) + read (10) + phyaddr + phyreg */
- smc_mii_out(dev, 6 << 10 | phyaddr << 5 | phyreg, 14);
-
- /* Turnaround (2bits) + phydata */
- phydata = smc_mii_in(dev, 18);
-
- /* Return to idle state */
- SMC_SET_MII(lp, SMC_GET_MII(lp) & ~(MII_MCLK|MII_MDOE|MII_MDO));
-
- DBG(3, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n",
- __func__, phyaddr, phyreg, phydata);
-
- SMC_SELECT_BANK(lp, 2);
- return phydata;
-}
-
-/*
- * Writes a register to the MII Management serial interface
- */
-static void smc_phy_write(struct net_device *dev, int phyaddr, int phyreg,
- int phydata)
-{
- struct smc_local *lp = netdev_priv(dev);
- void __iomem *ioaddr = lp->base;
-
- SMC_SELECT_BANK(lp, 3);
-
- /* Idle - 32 ones */
- smc_mii_out(dev, 0xffffffff, 32);
-
- /* Start code (01) + write (01) + phyaddr + phyreg + turnaround + phydata */
- smc_mii_out(dev, 5 << 28 | phyaddr << 23 | phyreg << 18 | 2 << 16 | phydata, 32);
-
- /* Return to idle state */
- SMC_SET_MII(lp, SMC_GET_MII(lp) & ~(MII_MCLK|MII_MDOE|MII_MDO));
-
- DBG(3, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n",
- __func__, phyaddr, phyreg, phydata);
-
- SMC_SELECT_BANK(lp, 2);
-}
-
-/*
- * Finds and reports the PHY address
- */
-static void smc_phy_detect(struct net_device *dev)
-{
- struct smc_local *lp = netdev_priv(dev);
- int phyaddr;
-
- DBG(2, "%s: %s\n", dev->name, __func__);
-
- lp->phy_type = 0;
-
- /*
- * Scan all 32 PHY addresses if necessary, starting at
- * PHY#1 to PHY#31, and then PHY#0 last.
- */
- for (phyaddr = 1; phyaddr < 33; ++phyaddr) {
- unsigned int id1, id2;
-
- /* Read the PHY identifiers */
- id1 = smc_phy_read(dev, phyaddr & 31, MII_PHYSID1);
- id2 = smc_phy_read(dev, phyaddr & 31, MII_PHYSID2);
-
- DBG(3, "%s: phy_id1=0x%x, phy_id2=0x%x\n",
- dev->name, id1, id2);
-
- /* Make sure it is a valid identifier */
- if (id1 != 0x0000 && id1 != 0xffff && id1 != 0x8000 &&
- id2 != 0x0000 && id2 != 0xffff && id2 != 0x8000) {
- /* Save the PHY's address */
- lp->mii.phy_id = phyaddr & 31;
- lp->phy_type = id1 << 16 | id2;
- break;
- }
- }
-}
-
-/*
- * Sets the PHY to a configuration as determined by the user
- */
-static int smc_phy_fixed(struct net_device *dev)
-{
- struct smc_local *lp = netdev_priv(dev);
- void __iomem *ioaddr = lp->base;
- int phyaddr = lp->mii.phy_id;
- int bmcr, cfg1;
-
- DBG(3, "%s: %s\n", dev->name, __func__);
-
- /* Enter Link Disable state */
- cfg1 = smc_phy_read(dev, phyaddr, PHY_CFG1_REG);
- cfg1 |= PHY_CFG1_LNKDIS;
- smc_phy_write(dev, phyaddr, PHY_CFG1_REG, cfg1);
-
- /*
- * Set our fixed capabilities
- * Disable auto-negotiation
- */
- bmcr = 0;
-
- if (lp->ctl_rfduplx)
- bmcr |= BMCR_FULLDPLX;
-
- if (lp->ctl_rspeed == 100)
- bmcr |= BMCR_SPEED100;
-
- /* Write our capabilities to the phy control register */
- smc_phy_write(dev, phyaddr, MII_BMCR, bmcr);
-
- /* Re-Configure the Receive/Phy Control register */
- SMC_SELECT_BANK(lp, 0);
- SMC_SET_RPC(lp, lp->rpc_cur_mode);
- SMC_SELECT_BANK(lp, 2);
-
- return 1;
-}
-
-/*
- * smc_phy_reset - reset the phy
- * @dev: net device
- * @phy: phy address
- *
- * Issue a software reset for the specified PHY and
- * wait up to 100ms for the reset to complete. We should
- * not access the PHY for 50ms after issuing the reset.
- *
- * The time to wait appears to be dependent on the PHY.
- *
- * Must be called with lp->lock locked.
- */
-static int smc_phy_reset(struct net_device *dev, int phy)
-{
- struct smc_local *lp = netdev_priv(dev);
- unsigned int bmcr;
- int timeout;
-
- smc_phy_write(dev, phy, MII_BMCR, BMCR_RESET);
-
- for (timeout = 2; timeout; timeout--) {
- spin_unlock_irq(&lp->lock);
- msleep(50);
- spin_lock_irq(&lp->lock);
-
- bmcr = smc_phy_read(dev, phy, MII_BMCR);
- if (!(bmcr & BMCR_RESET))
- break;
- }
-
- return bmcr & BMCR_RESET;
-}
-
-/*
- * smc_phy_powerdown - powerdown phy
- * @dev: net device
- *
- * Power down the specified PHY
- */
-static void smc_phy_powerdown(struct net_device *dev)
-{
- struct smc_local *lp = netdev_priv(dev);
- unsigned int bmcr;
- int phy = lp->mii.phy_id;
-
- if (lp->phy_type == 0)
- return;
-
- /* We need to ensure that no calls to smc_phy_configure are
- pending.
- */
- cancel_work_sync(&lp->phy_configure);
-
- bmcr = smc_phy_read(dev, phy, MII_BMCR);
- smc_phy_write(dev, phy, MII_BMCR, bmcr | BMCR_PDOWN);
-}
-
-/*
- * smc_phy_check_media - check the media status and adjust TCR
- * @dev: net device
- * @init: set true for initialisation
- *
- * Select duplex mode depending on negotiation state. This
- * also updates our carrier state.
- */
-static void smc_phy_check_media(struct net_device *dev, int init)
-{
- struct smc_local *lp = netdev_priv(dev);
- void __iomem *ioaddr = lp->base;
-
- if (mii_check_media(&lp->mii, netif_msg_link(lp), init)) {
- /* duplex state has changed */
- if (lp->mii.full_duplex) {
- lp->tcr_cur_mode |= TCR_SWFDUP;
- } else {
- lp->tcr_cur_mode &= ~TCR_SWFDUP;
- }
-
- SMC_SELECT_BANK(lp, 0);
- SMC_SET_TCR(lp, lp->tcr_cur_mode);
- }
-}
-
-/*
- * Configures the specified PHY through the MII management interface
- * using Autonegotiation.
- * Calls smc_phy_fixed() if the user has requested a certain config.
- * If RPC ANEG bit is set, the media selection is dependent purely on
- * the selection by the MII (either in the MII BMCR reg or the result
- * of autonegotiation.) If the RPC ANEG bit is cleared, the selection
- * is controlled by the RPC SPEED and RPC DPLX bits.
- */
-static void smc_phy_configure(struct work_struct *work)
-{
- struct smc_local *lp =
- container_of(work, struct smc_local, phy_configure);
- struct net_device *dev = lp->dev;
- void __iomem *ioaddr = lp->base;
- int phyaddr = lp->mii.phy_id;
- int my_phy_caps; /* My PHY capabilities */
- int my_ad_caps; /* My Advertised capabilities */
- int status;
-
- DBG(3, "%s:smc_program_phy()\n", dev->name);
-
- spin_lock_irq(&lp->lock);
-
- /*
- * We should not be called if phy_type is zero.
- */
- if (lp->phy_type == 0)
- goto smc_phy_configure_exit;
-
- if (smc_phy_reset(dev, phyaddr)) {
- printk("%s: PHY reset timed out\n", dev->name);
- goto smc_phy_configure_exit;
- }
-
- /*
- * Enable PHY Interrupts (for register 18)
- * Interrupts listed here are disabled
- */
- smc_phy_write(dev, phyaddr, PHY_MASK_REG,
- PHY_INT_LOSSSYNC | PHY_INT_CWRD | PHY_INT_SSD |
- PHY_INT_ESD | PHY_INT_RPOL | PHY_INT_JAB |
- PHY_INT_SPDDET | PHY_INT_DPLXDET);
-
- /* Configure the Receive/Phy Control register */
- SMC_SELECT_BANK(lp, 0);
- SMC_SET_RPC(lp, lp->rpc_cur_mode);
-
- /* If the user requested no auto neg, then go set his request */
- if (lp->mii.force_media) {
- smc_phy_fixed(dev);
- goto smc_phy_configure_exit;
- }
-
- /* Copy our capabilities from MII_BMSR to MII_ADVERTISE */
- my_phy_caps = smc_phy_read(dev, phyaddr, MII_BMSR);
-
- if (!(my_phy_caps & BMSR_ANEGCAPABLE)) {
- printk(KERN_INFO "Auto negotiation NOT supported\n");
- smc_phy_fixed(dev);
- goto smc_phy_configure_exit;
- }
-
- my_ad_caps = ADVERTISE_CSMA; /* I am CSMA capable */
-
- if (my_phy_caps & BMSR_100BASE4)
- my_ad_caps |= ADVERTISE_100BASE4;
- if (my_phy_caps & BMSR_100FULL)
- my_ad_caps |= ADVERTISE_100FULL;
- if (my_phy_caps & BMSR_100HALF)
- my_ad_caps |= ADVERTISE_100HALF;
- if (my_phy_caps & BMSR_10FULL)
- my_ad_caps |= ADVERTISE_10FULL;
- if (my_phy_caps & BMSR_10HALF)
- my_ad_caps |= ADVERTISE_10HALF;
-
- /* Disable capabilities not selected by our user */
- if (lp->ctl_rspeed != 100)
- my_ad_caps &= ~(ADVERTISE_100BASE4|ADVERTISE_100FULL|ADVERTISE_100HALF);
-
- if (!lp->ctl_rfduplx)
- my_ad_caps &= ~(ADVERTISE_100FULL|ADVERTISE_10FULL);
-
- /* Update our Auto-Neg Advertisement Register */
- smc_phy_write(dev, phyaddr, MII_ADVERTISE, my_ad_caps);
- lp->mii.advertising = my_ad_caps;
-
- /*
- * Read the register back. Without this, it appears that when
- * auto-negotiation is restarted, sometimes it isn't ready and
- * the link does not come up.
- */
- status = smc_phy_read(dev, phyaddr, MII_ADVERTISE);
-
- DBG(2, "%s: phy caps=%x\n", dev->name, my_phy_caps);
- DBG(2, "%s: phy advertised caps=%x\n", dev->name, my_ad_caps);
-
- /* Restart auto-negotiation process in order to advertise my caps */
- smc_phy_write(dev, phyaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
-
- smc_phy_check_media(dev, 1);
-
-smc_phy_configure_exit:
- SMC_SELECT_BANK(lp, 2);
- spin_unlock_irq(&lp->lock);
-}
-
-/*
- * smc_phy_interrupt
- *
- * Purpose: Handle interrupts relating to PHY register 18. This is
- * called from the "hard" interrupt handler under our private spinlock.
- */
-static void smc_phy_interrupt(struct net_device *dev)
-{
- struct smc_local *lp = netdev_priv(dev);
- int phyaddr = lp->mii.phy_id;
- int phy18;
-
- DBG(2, "%s: %s\n", dev->name, __func__);
-
- if (lp->phy_type == 0)
- return;
-
- for(;;) {
- smc_phy_check_media(dev, 0);
-
- /* Read PHY Register 18, Status Output */
- phy18 = smc_phy_read(dev, phyaddr, PHY_INT_REG);
- if ((phy18 & PHY_INT_INT) == 0)
- break;
- }
-}
-
-/*--- END PHY CONTROL AND CONFIGURATION-------------------------------------*/
-
-static void smc_10bt_check_media(struct net_device *dev, int init)
-{
- struct smc_local *lp = netdev_priv(dev);
- void __iomem *ioaddr = lp->base;
- unsigned int old_carrier, new_carrier;
-
- old_carrier = netif_carrier_ok(dev) ? 1 : 0;
-
- SMC_SELECT_BANK(lp, 0);
- new_carrier = (SMC_GET_EPH_STATUS(lp) & ES_LINK_OK) ? 1 : 0;
- SMC_SELECT_BANK(lp, 2);
-
- if (init || (old_carrier != new_carrier)) {
- if (!new_carrier) {
- netif_carrier_off(dev);
- } else {
- netif_carrier_on(dev);
- }
- if (netif_msg_link(lp))
- printk(KERN_INFO "%s: link %s\n", dev->name,
- new_carrier ? "up" : "down");
- }
-}
-
-static void smc_eph_interrupt(struct net_device *dev)
-{
- struct smc_local *lp = netdev_priv(dev);
- void __iomem *ioaddr = lp->base;
- unsigned int ctl;
-
- smc_10bt_check_media(dev, 0);
-
- SMC_SELECT_BANK(lp, 1);
- ctl = SMC_GET_CTL(lp);
- SMC_SET_CTL(lp, ctl & ~CTL_LE_ENABLE);
- SMC_SET_CTL(lp, ctl);
- SMC_SELECT_BANK(lp, 2);
-}
-
-/*
- * This is the main routine of the driver, to handle the device when
- * it needs some attention.
- */
-static irqreturn_t smc_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = dev_id;
- struct smc_local *lp = netdev_priv(dev);
- void __iomem *ioaddr = lp->base;
- int status, mask, timeout, card_stats;
- int saved_pointer;
-
- DBG(3, "%s: %s\n", dev->name, __func__);
-
- spin_lock(&lp->lock);
-
- /* A preamble may be used when there is a potential race
- * between the interruptible transmit functions and this
- * ISR. */
- SMC_INTERRUPT_PREAMBLE;
-
- saved_pointer = SMC_GET_PTR(lp);
- mask = SMC_GET_INT_MASK(lp);
- SMC_SET_INT_MASK(lp, 0);
-
- /* set a timeout value, so I don't stay here forever */
- timeout = MAX_IRQ_LOOPS;
-
- do {
- status = SMC_GET_INT(lp);
-
- DBG(2, "%s: INT 0x%02x MASK 0x%02x MEM 0x%04x FIFO 0x%04x\n",
- dev->name, status, mask,
- ({ int meminfo; SMC_SELECT_BANK(lp, 0);
- meminfo = SMC_GET_MIR(lp);
- SMC_SELECT_BANK(lp, 2); meminfo; }),
- SMC_GET_FIFO(lp));
-
- status &= mask;
- if (!status)
- break;
-
- if (status & IM_TX_INT) {
- /* do this before RX as it will free memory quickly */
- DBG(3, "%s: TX int\n", dev->name);
- smc_tx(dev);
- SMC_ACK_INT(lp, IM_TX_INT);
- if (THROTTLE_TX_PKTS)
- netif_wake_queue(dev);
- } else if (status & IM_RCV_INT) {
- DBG(3, "%s: RX irq\n", dev->name);
- smc_rcv(dev);
- } else if (status & IM_ALLOC_INT) {
- DBG(3, "%s: Allocation irq\n", dev->name);
- tasklet_hi_schedule(&lp->tx_task);
- mask &= ~IM_ALLOC_INT;
- } else if (status & IM_TX_EMPTY_INT) {
- DBG(3, "%s: TX empty\n", dev->name);
- mask &= ~IM_TX_EMPTY_INT;
-
- /* update stats */
- SMC_SELECT_BANK(lp, 0);
- card_stats = SMC_GET_COUNTER(lp);
- SMC_SELECT_BANK(lp, 2);
-
- /* single collisions */
- dev->stats.collisions += card_stats & 0xF;
- card_stats >>= 4;
-
- /* multiple collisions */
- dev->stats.collisions += card_stats & 0xF;
- } else if (status & IM_RX_OVRN_INT) {
- DBG(1, "%s: RX overrun (EPH_ST 0x%04x)\n", dev->name,
- ({ int eph_st; SMC_SELECT_BANK(lp, 0);
- eph_st = SMC_GET_EPH_STATUS(lp);
- SMC_SELECT_BANK(lp, 2); eph_st; }));
- SMC_ACK_INT(lp, IM_RX_OVRN_INT);
- dev->stats.rx_errors++;
- dev->stats.rx_fifo_errors++;
- } else if (status & IM_EPH_INT) {
- smc_eph_interrupt(dev);
- } else if (status & IM_MDINT) {
- SMC_ACK_INT(lp, IM_MDINT);
- smc_phy_interrupt(dev);
- } else if (status & IM_ERCV_INT) {
- SMC_ACK_INT(lp, IM_ERCV_INT);
- PRINTK("%s: UNSUPPORTED: ERCV INTERRUPT\n", dev->name);
- }
- } while (--timeout);
-
- /* restore register states */
- SMC_SET_PTR(lp, saved_pointer);
- SMC_SET_INT_MASK(lp, mask);
- spin_unlock(&lp->lock);
-
-#ifndef CONFIG_NET_POLL_CONTROLLER
- if (timeout == MAX_IRQ_LOOPS && dev->irq != IRQ_MFP_TIMD)
- PRINTK("%s: spurious interrupt (mask = 0x%02x)\n",
- dev->name, mask);
-#endif
- DBG(3, "%s: Interrupt done (%d loops)\n",
- dev->name, MAX_IRQ_LOOPS - timeout);
-
- /*
- * We return IRQ_HANDLED unconditionally here even if there was
- * nothing to do. There is a possibility that a packet might
- * get enqueued into the chip right after TX_EMPTY_INT is raised
- * but just before the CPU acknowledges the IRQ.
- * Better take an unneeded IRQ in some occasions than complexifying
- * the code for all cases.
- */
- return IRQ_HANDLED;
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-/*
- * Polling receive - used by netconsole and other diagnostic tools
- * to allow network i/o with interrupts disabled.
- */
-static void smc_poll_controller(struct net_device *dev)
-{
- disable_irq(dev->irq);
- smc_interrupt(dev->irq, dev);
- enable_irq(dev->irq);
-}
-#endif
-
-/* Our watchdog timed out. Called by the networking layer */
-static void smc_timeout(struct net_device *dev)
-{
- struct smc_local *lp = netdev_priv(dev);
- void __iomem *ioaddr = lp->base;
- int status, mask, eph_st, meminfo, fifo;
-
- DBG(2, "%s: %s\n", dev->name, __func__);
-
- spin_lock_irq(&lp->lock);
- status = SMC_GET_INT(lp);
- mask = SMC_GET_INT_MASK(lp);
- fifo = SMC_GET_FIFO(lp);
- SMC_SELECT_BANK(lp, 0);
- eph_st = SMC_GET_EPH_STATUS(lp);
- meminfo = SMC_GET_MIR(lp);
- SMC_SELECT_BANK(lp, 2);
- spin_unlock_irq(&lp->lock);
- PRINTK( "%s: TX timeout (INT 0x%02x INTMASK 0x%02x "
- "MEM 0x%04x FIFO 0x%04x EPH_ST 0x%04x)\n",
- dev->name, status, mask, meminfo, fifo, eph_st );
-
- smc_reset(dev);
- smc_enable(dev);
-
- /*
- * Reconfiguring the PHY doesn't seem like a bad idea here, but
- * smc_phy_configure() calls msleep() which calls schedule_timeout()
- * which calls schedule(). Hence we use a work queue.
- */
- if (lp->phy_type != 0)
- schedule_work(&lp->phy_configure);
-
- /* We can accept TX packets again */
- dev->trans_start = jiffies; /* prevent tx timeout */
- netif_wake_queue(dev);
-}
-
-/*
- * This routine will, depending on the values passed to it,
- * either make it accept multicast packets, go into
- * promiscuous mode (for TCPDUMP and cousins) or accept
- * a select set of multicast packets
- */
-static void smc_set_multicast_list(struct net_device *dev)
-{
- struct smc_local *lp = netdev_priv(dev);
- void __iomem *ioaddr = lp->base;
- unsigned char multicast_table[8];
- int update_multicast = 0;
-
- DBG(2, "%s: %s\n", dev->name, __func__);
-
- if (dev->flags & IFF_PROMISC) {
- DBG(2, "%s: RCR_PRMS\n", dev->name);
- lp->rcr_cur_mode |= RCR_PRMS;
- }
-
-/* BUG? I never disable promiscuous mode if multicasting was turned on.
- Now, I turn off promiscuous mode, but I don't do anything to multicasting
- when promiscuous mode is turned on.
-*/
-
- /*
- * Here, I am setting this to accept all multicast packets.
- * I don't need to zero the multicast table, because the flag is
- * checked before the table is
- */
- else if (dev->flags & IFF_ALLMULTI || netdev_mc_count(dev) > 16) {
- DBG(2, "%s: RCR_ALMUL\n", dev->name);
- lp->rcr_cur_mode |= RCR_ALMUL;
- }
-
- /*
- * This sets the internal hardware table to filter out unwanted
- * multicast packets before they take up memory.
- *
- * The SMC chip uses a hash table where the high 6 bits of the CRC of
- * address are the offset into the table. If that bit is 1, then the
- * multicast packet is accepted. Otherwise, it's dropped silently.
- *
- * To use the 6 bits as an offset into the table, the high 3 bits are
- * the number of the 8 bit register, while the low 3 bits are the bit
- * within that register.
- */
- else if (!netdev_mc_empty(dev)) {
- struct netdev_hw_addr *ha;
-
- /* table for flipping the order of 3 bits */
- static const unsigned char invert3[] = {0, 4, 2, 6, 1, 5, 3, 7};
-
- /* start with a table of all zeros: reject all */
- memset(multicast_table, 0, sizeof(multicast_table));
-
- netdev_for_each_mc_addr(ha, dev) {
- int position;
-
- /* make sure this is a multicast address -
- shouldn't this be a given if we have it here ? */
- if (!(*ha->addr & 1))
- continue;
-
- /* only use the low order bits */
- position = crc32_le(~0, ha->addr, 6) & 0x3f;
-
- /* do some messy swapping to put the bit in the right spot */
- multicast_table[invert3[position&7]] |=
- (1<<invert3[(position>>3)&7]);
- }
-
- /* be sure I get rid of flags I might have set */
- lp->rcr_cur_mode &= ~(RCR_PRMS | RCR_ALMUL);
-
- /* now, the table can be loaded into the chipset */
- update_multicast = 1;
- } else {
- DBG(2, "%s: ~(RCR_PRMS|RCR_ALMUL)\n", dev->name);
- lp->rcr_cur_mode &= ~(RCR_PRMS | RCR_ALMUL);
-
- /*
- * since I'm disabling all multicast entirely, I need to
- * clear the multicast list
- */
- memset(multicast_table, 0, sizeof(multicast_table));
- update_multicast = 1;
- }
-
- spin_lock_irq(&lp->lock);
- SMC_SELECT_BANK(lp, 0);
- SMC_SET_RCR(lp, lp->rcr_cur_mode);
- if (update_multicast) {
- SMC_SELECT_BANK(lp, 3);
- SMC_SET_MCAST(lp, multicast_table);
- }
- SMC_SELECT_BANK(lp, 2);
- spin_unlock_irq(&lp->lock);
-}
-
-
-/*
- * Open and Initialize the board
- *
- * Set up everything, reset the card, etc..
- */
-static int
-smc_open(struct net_device *dev)
-{
- struct smc_local *lp = netdev_priv(dev);
-
- DBG(2, "%s: %s\n", dev->name, __func__);
-
- /*
- * Check that the address is valid. If its not, refuse
- * to bring the device up. The user must specify an
- * address using ifconfig eth0 hw ether xx:xx:xx:xx:xx:xx
- */
- if (!is_valid_ether_addr(dev->dev_addr)) {
- PRINTK("%s: no valid ethernet hw addr\n", __func__);
- return -EINVAL;
- }
-
- /* Setup the default Register Modes */
- lp->tcr_cur_mode = TCR_DEFAULT;
- lp->rcr_cur_mode = RCR_DEFAULT;
- lp->rpc_cur_mode = RPC_DEFAULT |
- lp->cfg.leda << RPC_LSXA_SHFT |
- lp->cfg.ledb << RPC_LSXB_SHFT;
-
- /*
- * If we are not using a MII interface, we need to
- * monitor our own carrier signal to detect faults.
- */
- if (lp->phy_type == 0)
- lp->tcr_cur_mode |= TCR_MON_CSN;
-
- /* reset the hardware */
- smc_reset(dev);
- smc_enable(dev);
-
- /* Configure the PHY, initialize the link state */
- if (lp->phy_type != 0)
- smc_phy_configure(&lp->phy_configure);
- else {
- spin_lock_irq(&lp->lock);
- smc_10bt_check_media(dev, 1);
- spin_unlock_irq(&lp->lock);
- }
-
- netif_start_queue(dev);
- return 0;
-}
-
-/*
- * smc_close
- *
- * this makes the board clean up everything that it can
- * and not talk to the outside world. Caused by
- * an 'ifconfig ethX down'
- */
-static int smc_close(struct net_device *dev)
-{
- struct smc_local *lp = netdev_priv(dev);
-
- DBG(2, "%s: %s\n", dev->name, __func__);
-
- netif_stop_queue(dev);
- netif_carrier_off(dev);
-
- /* clear everything */
- smc_shutdown(dev);
- tasklet_kill(&lp->tx_task);
- smc_phy_powerdown(dev);
- return 0;
-}
-
-/*
- * Ethtool support
- */
-static int
-smc_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
- struct smc_local *lp = netdev_priv(dev);
- int ret;
-
- cmd->maxtxpkt = 1;
- cmd->maxrxpkt = 1;
-
- if (lp->phy_type != 0) {
- spin_lock_irq(&lp->lock);
- ret = mii_ethtool_gset(&lp->mii, cmd);
- spin_unlock_irq(&lp->lock);
- } else {
- cmd->supported = SUPPORTED_10baseT_Half |
- SUPPORTED_10baseT_Full |
- SUPPORTED_TP | SUPPORTED_AUI;
-
- if (lp->ctl_rspeed == 10)
- cmd->speed = SPEED_10;
- else if (lp->ctl_rspeed == 100)
- cmd->speed = SPEED_100;
-
- cmd->autoneg = AUTONEG_DISABLE;
- cmd->transceiver = XCVR_INTERNAL;
- cmd->port = 0;
- cmd->duplex = lp->tcr_cur_mode & TCR_SWFDUP ? DUPLEX_FULL : DUPLEX_HALF;
-
- ret = 0;
- }
-
- return ret;
-}
-
-static int
-smc_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
- struct smc_local *lp = netdev_priv(dev);
- int ret;
-
- if (lp->phy_type != 0) {
- spin_lock_irq(&lp->lock);
- ret = mii_ethtool_sset(&lp->mii, cmd);
- spin_unlock_irq(&lp->lock);
- } else {
- if (cmd->autoneg != AUTONEG_DISABLE ||
- cmd->speed != SPEED_10 ||
- (cmd->duplex != DUPLEX_HALF && cmd->duplex != DUPLEX_FULL) ||
- (cmd->port != PORT_TP && cmd->port != PORT_AUI))
- return -EINVAL;
-
-// lp->port = cmd->port;
- lp->ctl_rfduplx = cmd->duplex == DUPLEX_FULL;
-
-// if (netif_running(dev))
-// smc_set_port(dev);
-
- ret = 0;
- }
-
- return ret;
-}
-
-static void
-smc_ethtool_getdrvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
-{
- strncpy(info->driver, CARDNAME, sizeof(info->driver));
- strncpy(info->version, version, sizeof(info->version));
- strncpy(info->bus_info, dev_name(dev->dev.parent), sizeof(info->bus_info));
-}
-
-static int smc_ethtool_nwayreset(struct net_device *dev)
-{
- struct smc_local *lp = netdev_priv(dev);
- int ret = -EINVAL;
-
- if (lp->phy_type != 0) {
- spin_lock_irq(&lp->lock);
- ret = mii_nway_restart(&lp->mii);
- spin_unlock_irq(&lp->lock);
- }
-
- return ret;
-}
-
-static u32 smc_ethtool_getmsglevel(struct net_device *dev)
-{
- struct smc_local *lp = netdev_priv(dev);
- return lp->msg_enable;
-}
-
-static void smc_ethtool_setmsglevel(struct net_device *dev, u32 level)
-{
- struct smc_local *lp = netdev_priv(dev);
- lp->msg_enable = level;
-}
-
-static const struct ethtool_ops smc_ethtool_ops = {
- .get_settings = smc_ethtool_getsettings,
- .set_settings = smc_ethtool_setsettings,
- .get_drvinfo = smc_ethtool_getdrvinfo,
-
- .get_msglevel = smc_ethtool_getmsglevel,
- .set_msglevel = smc_ethtool_setmsglevel,
- .nway_reset = smc_ethtool_nwayreset,
- .get_link = ethtool_op_get_link,
-// .get_eeprom = smc_ethtool_geteeprom,
-// .set_eeprom = smc_ethtool_seteeprom,
-};
-
-static const struct net_device_ops smc_netdev_ops = {
- .ndo_open = smc_open,
- .ndo_stop = smc_close,
- .ndo_start_xmit = smc_hard_start_xmit,
- .ndo_tx_timeout = smc_timeout,
- .ndo_set_rx_mode = smc_set_multicast_list,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_set_mac_address = eth_mac_addr,
-#ifdef CONFIG_NET_POLL_CONTROLLER
- .ndo_poll_controller = smc_poll_controller,
-#endif
-};
-
-/*
- * smc_findirq
- *
- * This routine has a simple purpose -- make the SMC chip generate an
- * interrupt, so an auto-detect routine can detect it, and find the IRQ,
- */
-/*
- * does this still work?
- *
- * I just deleted auto_irq.c, since it was never built...
- * --jgarzik
- */
-static int smc_findirq(struct smc_local *lp)
-{
- void __iomem *ioaddr = lp->base;
- int timeout = 20;
- unsigned long cookie;
-
- DBG(2, "%s: %s\n", CARDNAME, __func__);
-
- cookie = probe_irq_on();
-
- /*
- * What I try to do here is trigger an ALLOC_INT. This is done
- * by allocating a small chunk of memory, which will give an interrupt
- * when done.
- */
- /* enable ALLOCation interrupts ONLY */
- SMC_SELECT_BANK(lp, 2);
- SMC_SET_INT_MASK(lp, IM_ALLOC_INT);
-
- /*
- * Allocate 512 bytes of memory. Note that the chip was just
- * reset so all the memory is available
- */
- SMC_SET_MMU_CMD(lp, MC_ALLOC | 1);
-
- /*
- * Wait until positive that the interrupt has been generated
- */
- do {
- int int_status;
- udelay(10);
- int_status = SMC_GET_INT(lp);
- if (int_status & IM_ALLOC_INT)
- break; /* got the interrupt */
- } while (--timeout);
-
- /*
- * there is really nothing that I can do here if timeout fails,
- * as autoirq_report will return a 0 anyway, which is what I
- * want in this case. Plus, the clean up is needed in both
- * cases.
- */
-
- /* and disable all interrupts again */
- SMC_SET_INT_MASK(lp, 0);
-
- /* and return what I found */
- return probe_irq_off(cookie);
-}
-
-/*
- * Function: smc_probe(unsigned long ioaddr)
- *
- * Purpose:
- * Tests to see if a given ioaddr points to an SMC91x chip.
- * Returns a 0 on success
- *
- * Algorithm:
- * (1) see if the high byte of BANK_SELECT is 0x33
- * (2) compare the ioaddr with the base register's address
- * (3) see if I recognize the chip ID in the appropriate register
- *
- * Here I do typical initialization tasks.
- *
- * o Initialize the structure if needed
- * o print out my vanity message if not done so already
- * o print out what type of hardware is detected
- * o print out the ethernet address
- * o find the IRQ
- * o set up my private data
- * o configure the dev structure with my subroutines
- * o actually GRAB the irq.
- * o GRAB the region
- */
-static int smc_probe(struct net_device *dev, void __iomem *ioaddr,
- unsigned long irq_flags)
-{
- struct smc_local *lp = netdev_priv(dev);
- static int version_printed = 0;
- int retval;
- unsigned int val, revision_register;
- const char *version_string;
-
- DBG(2, "%s: %s\n", CARDNAME, __func__);
-
- /* First, see if there is a card at the expected address! */
- if (!hwreg_present( ioaddr + BANK_SELECT )) {
- retval = -ENODEV;
- goto err_out;
- }
-
- /* First, see if the high byte is 0x33 */
- val = SMC_CURRENT_BANK(lp);
- DBG(2, "%s: bank signature probe returned 0x%04x\n", CARDNAME, val);
- if ((val & 0xFF00) != 0x3300) {
- if ((val & 0xFF) == 0x33) {
- printk(KERN_WARNING
- "%s: Detected possible byte-swapped interface"
- " at IOADDR %p\n", CARDNAME, ioaddr);
- }
- retval = -ENODEV;
- goto err_out;
- }
-
- /*
- * The above MIGHT indicate a device, but I need to write to
- * further test this.
- */
- SMC_SELECT_BANK(lp, 0);
- val = SMC_CURRENT_BANK(lp);
- if ((val & 0xFF00) != 0x3300) {
- retval = -ENODEV;
- goto err_out;
- }
-
- /*
- * well, we've already written once, so hopefully another
- * time won't hurt. This time, I need to switch the bank
- * register to bank 1, so I can access the base address
- * register
- */
- SMC_SELECT_BANK(lp, 1);
- val = SMC_GET_BASE(lp);
- val = ((val & 0x1F00) >> 3) << SMC_IO_SHIFT;
- if (((unsigned int)ioaddr & (0x3e0 << SMC_IO_SHIFT)) != val) {
- printk("%s: IOADDR %p doesn't match configuration (%x).\n",
- CARDNAME, ioaddr, val);
- }
-
- /*
- * check if the revision register is something that I
- * recognize. These might need to be added to later,
- * as future revisions could be added.
- */
- SMC_SELECT_BANK(lp, 3);
- revision_register = SMC_GET_REV(lp);
- DBG(2, "%s: revision = 0x%04x\n", CARDNAME, revision_register);
- version_string = chip_ids[ (revision_register >> 4) & 0xF];
- if (!version_string || (revision_register & 0xff00) != 0x3300) {
- /* I don't recognize this chip, so... */
- printk("%s: IO %p: Unrecognized revision register 0x%04x"
- ", Contact author.\n", CARDNAME,
- ioaddr, revision_register);
-
- retval = -ENODEV;
- goto err_out;
- }
-
- /* At this point I'll assume that the chip is an SMC91x. */
- if (version_printed++ == 0)
- printk("%s", version);
-
- /* fill in some of the fields */
- dev->base_addr = (unsigned long)ioaddr;
- lp->base = ioaddr;
- lp->version = revision_register & 0xff;
- spin_lock_init(&lp->lock);
-
- /* Get the MAC address */
- SMC_SELECT_BANK(lp, 1);
- SMC_GET_MAC_ADDR(lp, dev->dev_addr);
-
- /* now, reset the chip, and put it into a known state */
- smc_reset(dev);
-
- /*
- * If dev->irq is 0, then the device has to be banged on to see
- * what the IRQ is.
- *
- * This banging doesn't always detect the IRQ, for unknown reasons.
- * a workaround is to reset the chip and try again.
- *
- * Interestingly, the DOS packet driver *SETS* the IRQ on the card to
- * be what is requested on the command line. I don't do that, mostly
- * because the card that I have uses a non-standard method of accessing
- * the IRQs, and because this _should_ work in most configurations.
- *
- * Specifying an IRQ is done with the assumption that the user knows
- * what (s)he is doing. No checking is done!!!!
- */
- if (dev->irq < 1) {
- int trials;
-
- trials = 3;
- while (trials--) {
- dev->irq = smc_findirq(lp);
- if (dev->irq)
- break;
- /* kick the card and try again */
- smc_reset(dev);
- }
- }
- if (dev->irq == 0) {
- printk("%s: Couldn't autodetect your IRQ. Use irq=xx.\n",
- dev->name);
- retval = -ENODEV;
- goto err_out;
- }
- dev->irq = irq_canonicalize(dev->irq);
-
- /* Fill in the fields of the device structure with ethernet values. */
- ether_setup(dev);
-
- dev->watchdog_timeo = msecs_to_jiffies(watchdog);
- dev->netdev_ops = &smc_netdev_ops;
- dev->ethtool_ops = &smc_ethtool_ops;
-
- tasklet_init(&lp->tx_task, smc_hardware_send_pkt, (unsigned long)dev);
- INIT_WORK(&lp->phy_configure, smc_phy_configure);
- lp->dev = dev;
- lp->mii.phy_id_mask = 0x1f;
- lp->mii.reg_num_mask = 0x1f;
- lp->mii.force_media = 0;
- lp->mii.full_duplex = 0;
- lp->mii.dev = dev;
- lp->mii.mdio_read = smc_phy_read;
- lp->mii.mdio_write = smc_phy_write;
-
- /*
- * Locate the phy, if any.
- */
- if (lp->version >= (CHIP_91100 << 4))
- smc_phy_detect(dev);
-
- /* then shut everything down to save power */
- smc_shutdown(dev);
- smc_phy_powerdown(dev);
-
- /* Set default parameters */
- lp->msg_enable = NETIF_MSG_LINK;
- lp->ctl_rfduplx = 0;
- lp->ctl_rspeed = 10;
-
- if (lp->version >= (CHIP_91100 << 4)) {
- lp->ctl_rfduplx = 1;
- lp->ctl_rspeed = 100;
- }
-
- /* Grab the IRQ */
- retval = request_irq(dev->irq, atari_ethernat_interrupt, irq_flags, dev->name, dev);
- if (retval)
- goto err_out;
-
-#ifdef CONFIG_ARCH_PXA
-# ifdef SMC_USE_PXA_DMA
- lp->cfg.flags |= SMC91X_USE_DMA;
-# endif
- if (lp->cfg.flags & SMC91X_USE_DMA) {
- int dma = pxa_request_dma(dev->name, DMA_PRIO_LOW,
- smc_pxa_dma_irq, NULL);
- if (dma >= 0)
- dev->dma = dma;
- }
-#endif
-
- retval = register_netdev(dev);
- if (retval == 0) {
- /* now, print out the card info, in a short format.. */
- printk("%s: %s (rev %d) at %p IRQ %d",
- dev->name, version_string, revision_register & 0x0f,
- lp->base, dev->irq);
-
- if (dev->dma != (unsigned char)-1)
- printk(" DMA %d", dev->dma);
-
- printk(KERN_INFO "%s%s\n",
- lp->cfg.flags & SMC91X_NOWAIT ? " [nowait]" : "",
- THROTTLE_TX_PKTS ? " [throttle_tx]" : "");
-
- if (!is_valid_ether_addr(dev->dev_addr)) {
- printk("%s: Invalid ethernet MAC address. Please "
- "set using ifconfig\n", dev->name);
- random_ether_addr(dev->dev_addr);
- printk(KERN_INFO "%s: Ethernet addr set (random): %pM\n",
- dev->name, dev->dev_addr);
- } else {
- /* Print the Ethernet address */
- printk("%s: Ethernet addr: %pM\n",
- dev->name, dev->dev_addr);
- }
-
- if (lp->phy_type == 0) {
- PRINTK("%s: No PHY found\n", dev->name);
- } else if ((lp->phy_type & 0xfffffff0) == 0x0016f840) {
- PRINTK("%s: PHY LAN83C183 (LAN91C111 Internal)\n", dev->name);
- } else if ((lp->phy_type & 0xfffffff0) == 0x02821c50) {
- PRINTK("%s: PHY LAN83C180\n", dev->name);
- }
- }
-
-err_out:
-#ifdef CONFIG_ARCH_PXA
- if (retval && dev->dma != (unsigned char)-1)
- pxa_free_dma(dev->dma);
-#endif
- return retval;
-}
-
-static int smc_enable_device(struct platform_device *pdev)
-{
- struct net_device *ndev = platform_get_drvdata(pdev);
- struct smc_local *lp = netdev_priv(ndev);
- unsigned long flags;
- unsigned char ecor, ecsr;
- void __iomem *addr;
- struct resource * res;
-
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib");
- if (!res)
- return 0;
-
- /*
- * Map the attribute space. This is overkill, but clean.
- */
- addr = ioremap(res->start, ATTRIB_SIZE);
- if (!addr)
- return -ENOMEM;
-
- /*
- * Reset the device. We must disable IRQs around this
- * since a reset causes the IRQ line become active.
- */
- local_irq_save(flags);
- ecor = readb(addr + (ECOR << SMC_IO_SHIFT)) & ~ECOR_RESET;
- writeb(ecor | ECOR_RESET, addr + (ECOR << SMC_IO_SHIFT));
- readb(addr + (ECOR << SMC_IO_SHIFT));
-
- /*
- * Wait 100us for the chip to reset.
- */
- udelay(100);
-
- /*
- * The device will ignore all writes to the enable bit while
- * reset is asserted, even if the reset bit is cleared in the
- * same write. Must clear reset first, then enable the device.
- */
- writeb(ecor, addr + (ECOR << SMC_IO_SHIFT));
- writeb(ecor | ECOR_ENABLE, addr + (ECOR << SMC_IO_SHIFT));
-
- /*
- * Set the appropriate byte/word mode.
- */
- ecsr = readb(addr + (ECSR << SMC_IO_SHIFT)) & ~ECSR_IOIS8;
- if (!SMC_16BIT(lp))
- ecsr |= ECSR_IOIS8;
- writeb(ecsr, addr + (ECSR << SMC_IO_SHIFT));
- local_irq_restore(flags);
-
- iounmap(addr);
-
- /*
- * Wait for the chip to wake up. We could poll the control
- * register in the main register space, but that isn't mapped
- * yet. We know this is going to take 750us.
- */
- msleep(1);
-
- return 0;
-}
-
-static int smc_request_attrib(struct platform_device *pdev,
- struct net_device *ndev)
-{
- struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib");
-
- if (!res)
- return 0;
-
- if (!request_mem_region(res->start, ATTRIB_SIZE, CARDNAME))
- return -EBUSY;
-
- return 0;
-}
-
-static void smc_release_attrib(struct platform_device *pdev,
- struct net_device *ndev)
-{
- struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib");
-
- if (res)
- release_mem_region(res->start, ATTRIB_SIZE);
-}
-
-static inline void smc_request_datacs(struct platform_device *pdev, struct net_device *ndev)
-{
- if (SMC_CAN_USE_DATACS) {
- struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-data32");
- struct smc_local *lp = netdev_priv(ndev);
-
- if (!res)
- return;
-
- if(!request_mem_region(res->start, SMC_DATA_EXTENT, CARDNAME)) {
- printk(KERN_INFO "%s: failed to request datacs memory region.\n", CARDNAME);
- return;
- }
-
- lp->datacs = ioremap(res->start, SMC_DATA_EXTENT);
- }
-}
-
-static void smc_release_datacs(struct platform_device *pdev, struct net_device *ndev)
-{
- if (SMC_CAN_USE_DATACS) {
- struct smc_local *lp = netdev_priv(ndev);
- struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-data32");
-
- if (lp->datacs)
- iounmap(lp->datacs);
-
- lp->datacs = NULL;
-
- if (res)
- release_mem_region(res->start, SMC_DATA_EXTENT);
- }
-}
-
-/*
- * smc_init(void)
- * Input parameters:
- * dev->base_addr == 0, try to find all possible locations
- * dev->base_addr > 0x1ff, this is the address to check
- * dev->base_addr == <anything else>, return failure code
- *
- * Output:
- * 0 --> there is a device
- * anything else, error
- */
-static int smc_drv_probe(struct platform_device *pdev)
-{
- struct smc91x_platdata *pd = pdev->dev.platform_data;
- struct smc_local *lp;
- struct net_device *ndev;
- struct resource *res, *ires;
- unsigned int __iomem *addr;
- unsigned long irq_flags = SMC_IRQ_FLAGS;
- int ret;
-
- ndev = alloc_etherdev(sizeof(struct smc_local));
- if (!ndev) {
- printk("%s: could not allocate device.\n", CARDNAME);
- ret = -ENOMEM;
- goto out;
- }
- SET_NETDEV_DEV(ndev, &pdev->dev);
-
- /* get configuration from platform data, only allow use of
- * bus width if both SMC_CAN_USE_xxx and SMC91X_USE_xxx are set.
- */
-
- lp = netdev_priv(ndev);
-
- if (pd) {
- memcpy(&lp->cfg, pd, sizeof(lp->cfg));
- lp->io_shift = SMC91X_IO_SHIFT(lp->cfg.flags);
- } else {
- lp->cfg.flags |= (SMC_CAN_USE_8BIT) ? SMC91X_USE_8BIT : 0;
- lp->cfg.flags |= (SMC_CAN_USE_16BIT) ? SMC91X_USE_16BIT : 0;
- lp->cfg.flags |= (SMC_CAN_USE_32BIT) ? SMC91X_USE_32BIT : 0;
- lp->cfg.flags |= (nowait) ? SMC91X_NOWAIT : 0;
- }
-
- if (!lp->cfg.leda && !lp->cfg.ledb) {
- lp->cfg.leda = RPC_LSA_DEFAULT;
- lp->cfg.ledb = RPC_LSB_DEFAULT;
- }
-
- ndev->dma = (unsigned char)-1;
-
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-regs");
- if (!res)
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- ret = -ENODEV;
- goto out_free_netdev;
- }
-
-
- if (!request_mem_region(res->start, SMC_IO_EXTENT, CARDNAME)) {
- ret = -EBUSY;
- goto out_free_netdev;
- }
-
- ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- if (!ires) {
- ret = -ENODEV;
- goto out_release_io;
- }
-
- ndev->irq = ires->start;
-
- if (ndev->irq != IRQ_MFP_TIMD) {
- printk("atari_91C111: IRQ resource specified irq=%d\n", ndev->irq);
-
- /*
- * 080720 MSch: testing timer based interrupts - need to set valid
- * interrupt here or request_irq bails out.
- * polling (use_poll == 1) not tested so far
- * Ultimately, this needs to be set in the platform device
- * data, or be overridden by module arguments
- * The actual level6 interrupt is hardwired to vector
- * 0xc4 according to the MiNT driver source. Interrupts
- * are enabled for the device by setting bit 1 at base+0x20
- * or base+0x23!
- */
- ndev->irq = IRQ_MFP_TIMD;
- ires->start = IRQ_MFP_TIMD;
- printk("atari_91C111: IRQ forced to irq=%d\n", ndev->irq);
- }
-
- if (irq_flags == -1 || ires->flags & IRQF_TRIGGER_MASK)
- irq_flags = ires->flags & IRQF_TRIGGER_MASK;
-
-
- if (ndev->irq == IRQ_MFP_TIMD) {
- printk(KERN_INFO "atari_91C111: Using timer D interrupt - do share!\n");
- irq_flags |= IRQF_SHARED;
- }
-
- ret = smc_request_attrib(pdev, ndev);
- if (ret)
- goto out_release_io;
-#if defined(CONFIG_SA1100_ASSABET)
- NCR_0 |= NCR_ENET_OSC_EN;
-#endif
- platform_set_drvdata(pdev, ndev);
- ret = smc_enable_device(pdev);
- if (ret)
- goto out_release_attrib;
-
- addr = ioremap(res->start, SMC_IO_EXTENT);
- if (!addr) {
- ret = -ENOMEM;
- goto out_release_attrib;
- }
-
-#ifdef CONFIG_ARCH_PXA
- {
- struct smc_local *lp = netdev_priv(ndev);
- lp->device = &pdev->dev;
- lp->physaddr = res->start;
- }
-#endif
-
- /*
- * about to probe for device; need to enable net IRQ here!
- * EtherNAT has interrupt enable register at 0x20 or 0x23
- * probe for base address + 0x23 or 0x20
- */
-
- ret = smc_probe(ndev, addr, irq_flags);
- if (ret != 0)
- goto out_iounmap;
-
- smc_request_datacs(pdev, ndev);
-
- if (ndev->irq == IRQ_MFP_TIMD) {
- /* maybe instead use MFP timer C ?? */
- /* init timer if not already running */
-
- int timd = period * 4;
- if (timd == 0)
- timd = 192; /* 200 Hz */
- else if (timd < 80)
- timd = 80;
- else if (timd > 255)
- timd = 255;
- printk(KERN_INFO "Timer D frequency: %u Hz\n", 38400/timd);
- /* set Timer D data Register */
- st_mfp.tim_dt_d = timd; /* 200 Hz */
- /* start timer D, div = 1:100 */
- st_mfp.tim_ct_cd = (st_mfp.tim_ct_cd & 0xf0) | 0x5;
- }
-
- return 0;
-
- out_iounmap:
- platform_set_drvdata(pdev, NULL);
- iounmap(addr);
- out_release_attrib:
- smc_release_attrib(pdev, ndev);
- out_release_io:
- release_mem_region(res->start, SMC_IO_EXTENT);
- out_free_netdev:
- free_netdev(ndev);
- out:
- printk("%s: not found (%d).\n", CARDNAME, ret);
-
- return ret;
-}
-
-static int smc_drv_remove(struct platform_device *pdev)
-{
- struct net_device *ndev = platform_get_drvdata(pdev);
- struct smc_local *lp = netdev_priv(ndev);
- struct resource *res;
-
- platform_set_drvdata(pdev, NULL);
-
- unregister_netdev(ndev);
-
- free_irq(ndev->irq, ndev);
-
-#ifdef CONFIG_ARCH_PXA
- if (ndev->dma != (unsigned char)-1)
- pxa_free_dma(ndev->dma);
-#endif
- iounmap(lp->base);
-
- smc_release_datacs(pdev,ndev);
- smc_release_attrib(pdev, ndev);
-
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-regs");
- if (!res)
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(res->start, SMC_IO_EXTENT);
-
- free_netdev(ndev);
-
- return 0;
-}
-
-static int smc_drv_suspend(struct device *dev)
-{
- struct platform_device *pdev = to_platform_device(dev);
- struct net_device *ndev = platform_get_drvdata(pdev);
-
- if (ndev) {
- if (netif_running(ndev)) {
- netif_device_detach(ndev);
- smc_shutdown(ndev);
- smc_phy_powerdown(ndev);
- }
- }
- return 0;
-}
-
-static int smc_drv_resume(struct device *dev)
-{
- struct platform_device *pdev = to_platform_device(dev);
- struct net_device *ndev = platform_get_drvdata(pdev);
-
- if (ndev) {
- struct smc_local *lp = netdev_priv(ndev);
- smc_enable_device(pdev);
- if (netif_running(ndev)) {
- smc_reset(ndev);
- smc_enable(ndev);
- if (lp->phy_type != 0)
- smc_phy_configure(&lp->phy_configure);
- netif_device_attach(ndev);
- }
- }
- return 0;
-}
-
-static struct dev_pm_ops smc_drv_pm_ops = {
- .suspend = smc_drv_suspend,
- .resume = smc_drv_resume,
-};
-
-static struct platform_driver smc_driver = {
- .probe = smc_drv_probe,
- .remove = smc_drv_remove,
- .driver = {
- .name = CARDNAME,
- .owner = THIS_MODULE,
- .pm = &smc_drv_pm_ops,
- },
-};
-
-static int __init smc_init(void)
-{
- if (!MACH_IS_ATARI)
- return -ENODEV;
-
-#ifdef MODULE
-#ifdef CONFIG_ISA
- if (io == -1)
- printk(KERN_WARNING
- "%s: You shouldn't use auto-probing with insmod!\n",
- CARDNAME);
-#endif
-#endif
-
- return platform_driver_register(&smc_driver);
-}
-
-static void __exit smc_cleanup(void)
-{
- platform_driver_unregister(&smc_driver);
-}
-
-module_init(smc_init);
-module_exit(smc_cleanup);
--
1.7.0.4