* [PATCH] Add mac driver for w90p910
@ 2009-07-16 12:55 Wan ZongShun
2009-07-16 17:42 ` Trilok Soni
2009-07-20 14:45 ` David Miller
0 siblings, 2 replies; 12+ messages in thread
From: Wan ZongShun @ 2009-07-16 12:55 UTC (permalink / raw)
To: David S. Miller, linux-netdev, linux-arm-kernel, Eric.miao
Dear David,
This is a MAC driver patch for supporting my evaluation board
based on w90p910 SoC, which is a Winbond(nuvoton) ARM SoC.
Thanks!
Add mac driver support for evaluation board based on w90p910.
Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
---
drivers/net/arm/Kconfig | 8 +
drivers/net/arm/Makefile | 1 +
drivers/net/arm/w90p910_ether.c | 1105 +++++++++++++++++++++++++++++++++++++++
3 files changed, 1114 insertions(+), 0 deletions(-)
create mode 100644 drivers/net/arm/w90p910_ether.c
diff --git a/drivers/net/arm/Kconfig b/drivers/net/arm/Kconfig
index 2895db1..c37ee9e 100644
--- a/drivers/net/arm/Kconfig
+++ b/drivers/net/arm/Kconfig
@@ -63,3 +63,11 @@ config IXP4XX_ETH
help
Say Y here if you want to use built-in Ethernet ports
on IXP4xx processor.
+
+config W90P910_ETH
+ tristate "Nuvoton w90p910 Ethernet support"
+ depends on ARM && ARCH_W90X900
+ select PHYLIB
+ help
+ Say Y here if you want to use built-in Ethernet ports
+ on w90p910 processor.
diff --git a/drivers/net/arm/Makefile b/drivers/net/arm/Makefile
index 811a3cc..303171f 100644
--- a/drivers/net/arm/Makefile
+++ b/drivers/net/arm/Makefile
@@ -11,3 +11,4 @@ obj-$(CONFIG_ARM_AT91_ETHER) += at91_ether.o
obj-$(CONFIG_ARM_KS8695_ETHER) += ks8695net.o
obj-$(CONFIG_EP93XX_ETH) += ep93xx_eth.o
obj-$(CONFIG_IXP4XX_ETH) += ixp4xx_eth.o
+obj-$(CONFIG_W90P910_ETH) += w90p910_ether.o
diff --git a/drivers/net/arm/w90p910_ether.c b/drivers/net/arm/w90p910_ether.c
new file mode 100644
index 0000000..616fb79
--- /dev/null
+++ b/drivers/net/arm/w90p910_ether.c
@@ -0,0 +1,1105 @@
+/*
+ * Copyright (c) 2008-2009 Nuvoton technology corporation.
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ *
+ * 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;version 2 of the License.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/mii.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/ethtool.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+
+#define DRV_MODULE_NAME "w90p910-emc"
+#define DRV_MODULE_VERSION "0.1"
+
+/* Ethernet MAC Registers */
+#define REG_CAMCMR 0x00
+#define REG_CAMEN 0x04
+#define REG_CAMM_BASE 0x08
+#define REG_CAML_BASE 0x0c
+#define REG_TXDLSA 0x88
+#define REG_RXDLSA 0x8C
+#define REG_MCMDR 0x90
+#define REG_MIID 0x94
+#define REG_MIIDA 0x98
+#define REG_FFTCR 0x9C
+#define REG_TSDR 0xa0
+#define REG_RSDR 0xa4
+#define REG_DMARFC 0xa8
+#define REG_MIEN 0xac
+#define REG_MISTA 0xb0
+#define REG_CTXDSA 0xcc
+#define REG_CTXBSA 0xd0
+#define REG_CRXDSA 0xd4
+#define REG_CRXBSA 0xd8
+
+/* mac controller bit */
+#define MCMDR_RXON 0x01
+#define MCMDR_ACP (0x01 << 3)
+#define MCMDR_SPCRC (0x01 << 5)
+#define MCMDR_TXON (0x01 << 8)
+#define MCMDR_FDUP (0x01 << 18)
+#define MCMDR_ENMDC (0x01 << 19)
+#define MCMDR_OPMOD (0x01 << 20)
+#define SWR (0x01 << 24)
+
+/* cam command regiser */
+#define CAMCMR_AUP 0x01
+#define CAMCMR_AMP (0x01 << 1)
+#define CAMCMR_ABP (0x01 << 2)
+#define CAMCMR_CCAM (0x01 << 3)
+#define CAMCMR_ECMP (0x01 << 4)
+#define CAM0EN 0x01
+
+/* mac mii controller bit */
+#define MDCCR (0x0a << 20)
+#define PHYAD (0x01 << 8)
+#define PHYWR (0x01 << 16)
+#define PHYBUSY (0x01 << 17)
+#define PHYPRESP (0x01 << 18)
+#define CAM_ENTRY_SIZE 0x08
+
+/* rx and tx status */
+#define TXDS_TXCP (0x01 << 19)
+#define RXDS_CRCE (0x01 << 17)
+#define RXDS_PTLE (0x01 << 19)
+#define RXDS_RXGD (0x01 << 20)
+#define RXDS_ALIE (0x01 << 21)
+#define RXDS_RP (0x01 << 22)
+
+/* mac interrupt status*/
+#define MISTA_EXDEF (0x01 << 19)
+#define MISTA_TXBERR (0x01 << 24)
+#define MISTA_TDU (0x01 << 23)
+#define MISTA_RDU (0x01 << 10)
+#define MISTA_RXBERR (0x01 << 11)
+
+#define ENSTART 0x01
+#define ENRXINTR 0x01
+#define ENRXGD (0x01 << 4)
+#define ENRXBERR (0x01 << 11)
+#define ENTXINTR (0x01 << 16)
+#define ENTXCP (0x01 << 18)
+#define ENTXABT (0x01 << 21)
+#define ENTXBERR (0x01 << 24)
+#define ENMDC (0x01 << 19)
+#define PHYBUSY (0x01 << 17)
+#define MDCCR_VAL 0xa00000
+
+/* rx and tx owner bit */
+#define RX_OWEN_DMA (0x01 << 31)
+#define RX_OWEN_CPU (~(0x03 << 30))
+#define TX_OWEN_DMA (0x01 << 31)
+#define TX_OWEN_CPU (~(0x01 << 31))
+
+/* tx frame desc controller bit */
+#define MACTXINTEN 0x04
+#define CRCMODE 0x02
+#define PADDINGMODE 0x01
+
+/* fftcr controller bit */
+#define TXTHD (0x03 << 8)
+#define BLENGTH (0x01 << 20)
+
+/* global setting for driver */
+#define RX_DESC_SIZE 50
+#define TX_DESC_SIZE 10
+#define MAX_RBUFF_SZ 0x600
+#define MAX_TBUFF_SZ 0x600
+#define TX_TIMEOUT 50
+#define DELAY 1000
+#define CAM0 0x0
+
+static int w90p910_mdio_read(struct net_device *dev, int phy_id, int reg);
+
+struct w90p910_rxbd {
+ unsigned int sl;
+ unsigned int buffer;
+ unsigned int reserved;
+ unsigned int next;
+};
+
+struct w90p910_txbd {
+ unsigned int mode;
+ unsigned int buffer;
+ unsigned int sl;
+ unsigned int next;
+};
+
+struct recv_pdesc {
+ struct w90p910_rxbd desclist[RX_DESC_SIZE];
+ char recv_buf[RX_DESC_SIZE][MAX_RBUFF_SZ];
+};
+
+struct tran_pdesc {
+ struct w90p910_txbd desclist[TX_DESC_SIZE];
+ char tran_buf[RX_DESC_SIZE][MAX_TBUFF_SZ];
+};
+
+struct w90p910_ether {
+ struct recv_pdesc *rdesc;
+ struct recv_pdesc *rdesc_phys;
+ struct tran_pdesc *tdesc;
+ struct tran_pdesc *tdesc_phys;
+ struct net_device_stats stats;
+ struct platform_device *pdev;
+ struct sk_buff *skb;
+ struct clk *clk;
+ struct clk *rmiiclk;
+ struct mii_if_info mii;
+ struct timer_list check_timer;
+ void __iomem *reg;
+ unsigned int rxirq;
+ unsigned int txirq;
+ unsigned int cur_tx;
+ unsigned int cur_rx;
+ unsigned int finish_tx;
+ unsigned int rx_packets;
+ unsigned int rx_bytes;
+ unsigned int start_tx_ptr;
+ unsigned int start_rx_ptr;
+ unsigned int linkflag;
+ spinlock_t lock;
+};
+
+static void update_linkspeed_register(struct net_device *dev,
+ unsigned int speed, unsigned int duplex)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ unsigned int val;
+
+ val = __raw_readl(ether->reg + REG_MCMDR);
+
+ if (speed == SPEED_100) {
+ /* 100 full/half duplex */
+ if (duplex == DUPLEX_FULL) {
+ val |= (MCMDR_OPMOD | MCMDR_FDUP);
+ } else {
+ val |= MCMDR_OPMOD;
+ val &= ~MCMDR_FDUP;
+ }
+ } else {
+ /* 10 full/half duplex */
+ if (duplex == DUPLEX_FULL) {
+ val |= MCMDR_FDUP;
+ val &= ~MCMDR_OPMOD;
+ } else {
+ val &= ~(MCMDR_FDUP | MCMDR_OPMOD);
+ }
+ }
+
+ __raw_writel(val, ether->reg + REG_MCMDR);
+}
+
+static void update_linkspeed(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ struct platform_device *pdev;
+ unsigned int bmsr, bmcr, lpa, speed, duplex;
+
+ pdev = ether->pdev;
+
+ if (!mii_link_ok(ðer->mii)) {
+ ether->linkflag = 0x0;
+ netif_carrier_off(dev);
+ dev_warn(&pdev->dev, "%s: Link down.\n", dev->name);
+ return;
+ }
+
+ if (ether->linkflag == 1)
+ return;
+
+ bmsr = w90p910_mdio_read(dev, ether->mii.phy_id, MII_BMSR);
+ bmcr = w90p910_mdio_read(dev, ether->mii.phy_id, MII_BMCR);
+
+ if (bmcr & BMCR_ANENABLE) {
+ if (!(bmsr & BMSR_ANEGCOMPLETE))
+ return;
+
+ lpa = w90p910_mdio_read(dev, ether->mii.phy_id, MII_LPA);
+
+ if ((lpa & LPA_100FULL) || (lpa & LPA_100HALF))
+ speed = SPEED_100;
+ else
+ speed = SPEED_10;
+
+ if ((lpa & LPA_100FULL) || (lpa & LPA_10FULL))
+ duplex = DUPLEX_FULL;
+ else
+ duplex = DUPLEX_HALF;
+
+ } else {
+ speed = (bmcr & BMCR_SPEED100) ? SPEED_100 : SPEED_10;
+ duplex = (bmcr & BMCR_FULLDPLX) ? DUPLEX_FULL : DUPLEX_HALF;
+ }
+
+ update_linkspeed_register(dev, speed, duplex);
+
+ dev_info(&pdev->dev, "%s: Link now %i-%s\n", dev->name, speed,
+ (duplex == DUPLEX_FULL) ? "FullDuplex" : "HalfDuplex");
+ ether->linkflag = 0x01;
+
+ netif_carrier_on(dev);
+}
+
+static void w90p910_check_link(unsigned long dev_id)
+{
+ struct net_device *dev = (struct net_device *) dev_id;
+ struct w90p910_ether *ether = netdev_priv(dev);
+
+ update_linkspeed(dev);
+ mod_timer(ðer->check_timer, jiffies + msecs_to_jiffies(1000));
+}
+
+static void w90p910_write_cam(struct net_device *dev,
+ unsigned int x, unsigned char *pval)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ unsigned int msw, lsw;
+
+ msw = (pval[0] << 24) | (pval[1] << 16) | (pval[2] << 8) | pval[3];
+
+ lsw = (pval[4] << 24) | (pval[5] << 16);
+
+ __raw_writel(lsw, ether->reg + REG_CAML_BASE + x * CAM_ENTRY_SIZE);
+ __raw_writel(msw, ether->reg + REG_CAMM_BASE + x * CAM_ENTRY_SIZE);
+}
+
+static void w90p910_init_desc(struct net_device *dev)
+{
+ struct w90p910_ether *ether;
+ struct w90p910_txbd *tdesc, *tdesc_phys;
+ struct w90p910_rxbd *rdesc, *rdesc_phys;
+ unsigned int i, j;
+
+ ether = netdev_priv(dev);
+
+ ether->tdesc = (struct tran_pdesc *)
+ dma_alloc_coherent(NULL, sizeof(struct tran_pdesc),
+ (dma_addr_t *) ðer->tdesc_phys, GFP_KERNEL);
+
+ ether->rdesc = (struct recv_pdesc *)
+ dma_alloc_coherent(NULL, sizeof(struct recv_pdesc),
+ (dma_addr_t *) ðer->rdesc_phys, GFP_KERNEL);
+
+ for (i = 0; i < TX_DESC_SIZE; i++) {
+ tdesc = &(ether->tdesc->desclist[i]);
+
+ j = ((i + 1) / TX_DESC_SIZE);
+
+ if (j != 0) {
+ tdesc_phys = &(ether->tdesc_phys->desclist[0]);
+ ether->start_tx_ptr = (unsigned int)tdesc_phys;
+ tdesc->next = (unsigned int)ether->start_tx_ptr;
+ } else {
+ tdesc_phys = &(ether->tdesc_phys->desclist[i+1]);
+ tdesc->next = (unsigned int)tdesc_phys;
+ }
+
+ tdesc->buffer = (unsigned int)ether->tdesc_phys->tran_buf[i];
+ tdesc->sl = 0;
+ tdesc->mode = 0;
+ }
+
+ for (i = 0; i < RX_DESC_SIZE; i++) {
+ rdesc = &(ether->rdesc->desclist[i]);
+
+ j = ((i + 1) / RX_DESC_SIZE);
+
+ if (j != 0) {
+ rdesc_phys = &(ether->rdesc_phys->desclist[0]);
+ ether->start_rx_ptr = (unsigned int)rdesc_phys;
+ rdesc->next = (unsigned int)ether->start_rx_ptr;
+ } else {
+ rdesc_phys = &(ether->rdesc_phys->desclist[i+1]);
+ rdesc->next = (unsigned int)rdesc_phys;
+ }
+
+ rdesc->sl = RX_OWEN_DMA;
+ rdesc->buffer = (unsigned int)ether->rdesc_phys->recv_buf[i];
+ }
+}
+
+static void w90p910_set_fifo_threshold(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ unsigned int val;
+
+ val = TXTHD | BLENGTH;
+ __raw_writel(val, ether->reg + REG_FFTCR);
+}
+
+static void w90p910_return_default_idle(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ unsigned int val;
+
+ val = __raw_readl(ether->reg + REG_MCMDR);
+ val |= SWR;
+ __raw_writel(val, ether->reg + REG_MCMDR);
+}
+
+static void w90p910_trigger_rx(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+
+ __raw_writel(ENSTART, ether->reg + REG_RSDR);
+}
+
+static void w90p910_trigger_tx(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+
+ __raw_writel(ENSTART, ether->reg + REG_TSDR);
+}
+
+static void w90p910_enable_mac_interrupt(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ unsigned int val;
+
+ val = ENTXINTR | ENRXINTR | ENRXGD | ENTXCP;
+ val |= ENTXBERR | ENRXBERR | ENTXABT;
+
+ __raw_writel(val, ether->reg + REG_MIEN);
+}
+
+static void w90p910_get_and_clear_int(struct net_device *dev,
+ unsigned int *val)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+
+ *val = __raw_readl(ether->reg + REG_MISTA);
+ __raw_writel(*val, ether->reg + REG_MISTA);
+}
+
+static void w90p910_set_global_maccmd(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ unsigned int val;
+
+ val = __raw_readl(ether->reg + REG_MCMDR);
+ val |= MCMDR_SPCRC | MCMDR_ENMDC | MCMDR_ACP | ENMDC;
+ __raw_writel(val, ether->reg + REG_MCMDR);
+}
+
+static void w90p910_enable_cam(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ unsigned int val;
+
+ w90p910_write_cam(dev, CAM0, dev->dev_addr);
+
+ val = __raw_readl(ether->reg + REG_CAMEN);
+ val |= CAM0EN;
+ __raw_writel(val, ether->reg + REG_CAMEN);
+}
+
+static void w90p910_enable_cam_command(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ unsigned int val;
+
+ val = CAMCMR_ECMP | CAMCMR_ABP | CAMCMR_AMP;
+ __raw_writel(val, ether->reg + REG_CAMCMR);
+}
+
+static void w90p910_enable_tx(struct net_device *dev, unsigned int enable)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ unsigned int val;
+
+ val = __raw_readl(ether->reg + REG_MCMDR);
+
+ if (enable)
+ val |= MCMDR_TXON;
+ else
+ val &= ~MCMDR_TXON;
+
+ __raw_writel(val, ether->reg + REG_MCMDR);
+}
+
+static void w90p910_enable_rx(struct net_device *dev, unsigned int enable)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ unsigned int val;
+
+ val = __raw_readl(ether->reg + REG_MCMDR);
+
+ if (enable)
+ val |= MCMDR_RXON;
+ else
+ val &= ~MCMDR_RXON;
+
+ __raw_writel(val, ether->reg + REG_MCMDR);
+}
+
+static void w90p910_set_curdest(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+
+ __raw_writel(ether->start_rx_ptr, ether->reg + REG_RXDLSA);
+ __raw_writel(ether->start_tx_ptr, ether->reg + REG_TXDLSA);
+}
+
+static void w90p910_reset_mac(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+
+ spin_lock(ðer->lock);
+
+ w90p910_enable_tx(dev, 0);
+ w90p910_enable_rx(dev, 0);
+ w90p910_set_fifo_threshold(dev);
+ w90p910_return_default_idle(dev);
+
+ if (!netif_queue_stopped(dev))
+ netif_stop_queue(dev);
+
+ w90p910_init_desc(dev);
+
+ dev->trans_start = jiffies;
+ ether->cur_tx = 0x0;
+ ether->finish_tx = 0x0;
+ ether->cur_rx = 0x0;
+
+ w90p910_set_curdest(dev);
+ w90p910_enable_cam(dev);
+ w90p910_enable_cam_command(dev);
+ w90p910_enable_mac_interrupt(dev);
+ w90p910_enable_tx(dev, 1);
+ w90p910_enable_rx(dev, 1);
+ w90p910_trigger_tx(dev);
+ w90p910_trigger_rx(dev);
+
+ dev->trans_start = jiffies;
+
+ if (netif_queue_stopped(dev))
+ netif_wake_queue(dev);
+
+ spin_unlock(ðer->lock);
+}
+
+static void w90p910_mdio_write(struct net_device *dev,
+ int phy_id, int reg, int data)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ struct platform_device *pdev;
+ unsigned int val, i;
+
+ pdev = ether->pdev;
+
+ __raw_writel(data, ether->reg + REG_MIID);
+
+ val = (phy_id << 0x08) | reg;
+ val |= PHYBUSY | PHYWR | MDCCR_VAL;
+ __raw_writel(val, ether->reg + REG_MIIDA);
+
+ for (i = 0; i < DELAY; i++) {
+ if ((__raw_readl(ether->reg + REG_MIIDA) & PHYBUSY) == 0)
+ break;
+ }
+
+ if (i == DELAY)
+ dev_warn(&pdev->dev, "mdio write timed out\n");
+}
+
+static int w90p910_mdio_read(struct net_device *dev, int phy_id, int reg)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ struct platform_device *pdev;
+ unsigned int val, i, data;
+
+ pdev = ether->pdev;
+
+ val = (phy_id << 0x08) | reg;
+ val |= PHYBUSY | MDCCR_VAL;
+ __raw_writel(val, ether->reg + REG_MIIDA);
+
+ for (i = 0; i < DELAY; i++) {
+ if ((__raw_readl(ether->reg + REG_MIIDA) & PHYBUSY) == 0)
+ break;
+ }
+
+ if (i == DELAY) {
+ dev_warn(&pdev->dev, "mdio read timed out\n");
+ data = 0xffff;
+ } else {
+ data = __raw_readl(ether->reg + REG_MIID);
+ }
+
+ return data;
+}
+
+static int set_mac_address(struct net_device *dev, void *addr)
+{
+ struct sockaddr *address = addr;
+
+ if (!is_valid_ether_addr(address->sa_data))
+ return -EADDRNOTAVAIL;
+
+ memcpy(dev->dev_addr, address->sa_data, dev->addr_len);
+ w90p910_write_cam(dev, CAM0, dev->dev_addr);
+
+ return 0;
+}
+
+static int w90p910_ether_close(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+
+ dma_free_writecombine(NULL, sizeof(struct w90p910_rxbd),
+ ether->rdesc, (dma_addr_t)ether->rdesc_phys);
+ dma_free_writecombine(NULL, sizeof(struct w90p910_txbd),
+ ether->tdesc, (dma_addr_t)ether->tdesc_phys);
+
+ netif_stop_queue(dev);
+
+ del_timer_sync(ðer->check_timer);
+ clk_disable(ether->rmiiclk);
+ clk_disable(ether->clk);
+
+ free_irq(ether->txirq, dev);
+ free_irq(ether->rxirq, dev);
+
+ return 0;
+}
+
+static struct net_device_stats *w90p910_ether_stats(struct net_device *dev)
+{
+ struct w90p910_ether *ether;
+
+ ether = netdev_priv(dev);
+
+ return ðer->stats;
+}
+
+static int w90p910_send_frame(struct net_device *dev,
+ unsigned char *data, int length)
+{
+ struct w90p910_ether *ether;
+ struct w90p910_txbd *txbd;
+ struct platform_device *pdev;
+ unsigned char *buffer;
+
+ ether = netdev_priv(dev);
+ pdev = ether->pdev;
+
+ txbd = ðer->tdesc->desclist[ether->cur_tx];
+ buffer = ether->tdesc->tran_buf[ether->cur_tx];
+ if (length > 1514) {
+ dev_err(&pdev->dev, "send data %d bytes, check it\n", length);
+ length = 1514;
+ }
+
+ txbd->sl = length & 0xFFFF;
+
+ memcpy(buffer, data, length);
+
+ txbd->mode = TX_OWEN_DMA | PADDINGMODE | CRCMODE | MACTXINTEN;
+
+ w90p910_enable_tx(dev, 1);
+
+ w90p910_trigger_tx(dev);
+
+ ether->cur_tx = (ether->cur_tx+1) % TX_DESC_SIZE;
+ txbd = ðer->tdesc->desclist[ether->cur_tx];
+
+ dev->trans_start = jiffies;
+
+ if (txbd->mode & TX_OWEN_DMA)
+ netif_stop_queue(dev);
+
+ return 0;
+}
+
+static int w90p910_ether_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+
+ if (!(w90p910_send_frame(dev, skb->data, skb->len))) {
+ ether->skb = skb;
+ dev_kfree_skb_irq(skb);
+ return 0;
+ }
+ return -1;
+}
+
+static irqreturn_t w90p910_tx_interrupt(int irq, void *dev_id)
+{
+ struct w90p910_ether *ether;
+ struct w90p910_txbd *txbd;
+ struct platform_device *pdev;
+ struct tran_pdesc *tran_pdesc;
+ struct net_device *dev;
+ unsigned int cur_entry, entry, status;
+
+ dev = (struct net_device *)dev_id;
+ ether = netdev_priv(dev);
+ pdev = ether->pdev;
+
+ spin_lock(ðer->lock);
+
+ w90p910_get_and_clear_int(dev, &status);
+
+ cur_entry = __raw_readl(ether->reg + REG_CTXDSA);
+
+ tran_pdesc = ether->tdesc_phys;
+ entry = (unsigned int)(&tran_pdesc->desclist[ether->finish_tx]);
+
+ while (entry != cur_entry) {
+ txbd = ðer->tdesc->desclist[ether->finish_tx];
+
+ ether->finish_tx = (ether->finish_tx + 1) % TX_DESC_SIZE;
+
+ if (txbd->sl & TXDS_TXCP) {
+ ether->stats.tx_packets++;
+ ether->stats.tx_bytes += txbd->sl & 0xFFFF;
+ } else {
+ ether->stats.tx_errors++;
+ }
+
+ txbd->sl = 0x0;
+ txbd->mode = 0x0;
+
+ if (netif_queue_stopped(dev))
+ netif_wake_queue(dev);
+
+ entry = (unsigned int)(&tran_pdesc->desclist[ether->finish_tx]);
+ }
+
+ if (status & MISTA_EXDEF) {
+ dev_err(&pdev->dev, "emc defer exceed interrupt\n");
+ } else if (status & MISTA_TXBERR) {
+ dev_err(&pdev->dev, "emc bus error interrupt\n");
+ w90p910_reset_mac(dev);
+ } else if (status & MISTA_TDU) {
+ if (netif_queue_stopped(dev))
+ netif_wake_queue(dev);
+ }
+
+ spin_unlock(ðer->lock);
+
+ return IRQ_HANDLED;
+}
+
+static void netdev_rx(struct net_device *dev)
+{
+ struct w90p910_ether *ether;
+ struct w90p910_rxbd *rxbd;
+ struct platform_device *pdev;
+ struct recv_pdesc *rdesc_phys;
+ struct sk_buff *skb;
+ unsigned char *data;
+ unsigned int length, status, val, entry;
+
+ ether = netdev_priv(dev);
+ pdev = ether->pdev;
+ rdesc_phys = ether->rdesc_phys;
+
+ rxbd = ðer->rdesc->desclist[ether->cur_rx];
+
+ do {
+ val = __raw_readl(ether->reg + REG_CRXDSA);
+ entry = (unsigned int)&rdesc_phys->desclist[ether->cur_rx];
+
+ if (val == entry)
+ break;
+
+ status = rxbd->sl;
+ length = status & 0xFFFF;
+
+ if (status & RXDS_RXGD) {
+ data = ether->rdesc->recv_buf[ether->cur_rx];
+ skb = dev_alloc_skb(length+2);
+ if (!skb) {
+ dev_err(&pdev->dev, "get skb buffer error\n");
+ ether->stats.rx_dropped++;
+ return;
+ }
+
+ skb->dev = dev;
+ skb_reserve(skb, 2);
+ skb_put(skb, length);
+ skb_copy_to_linear_data(skb, data, length);
+ skb->protocol = eth_type_trans(skb, dev);
+ ether->stats.rx_packets++;
+ ether->stats.rx_bytes += length;
+ netif_rx(skb);
+ } else {
+ ether->stats.rx_errors++;
+
+ if (status & RXDS_RP) {
+ dev_err(&pdev->dev, "rx runt err\n");
+ ether->stats.rx_length_errors++;
+ } else if (status & RXDS_CRCE) {
+ dev_err(&pdev->dev, "rx crc err\n");
+ ether->stats.rx_crc_errors++;
+ }
+
+ if (status & RXDS_ALIE) {
+ dev_err(&pdev->dev, "rx aligment err\n");
+ ether->stats.rx_frame_errors++;
+ } else if (status & RXDS_PTLE) {
+ dev_err(&pdev->dev, "rx longer err\n");
+ ether->stats.rx_over_errors++;
+ }
+ }
+
+ rxbd->sl = RX_OWEN_DMA;
+ rxbd->reserved = 0x0;
+ ether->cur_rx = (ether->cur_rx+1) % RX_DESC_SIZE;
+ rxbd = ðer->rdesc->desclist[ether->cur_rx];
+
+ dev->last_rx = jiffies;
+ } while (1);
+}
+
+static irqreturn_t w90p910_rx_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev;
+ struct w90p910_ether *ether;
+ struct platform_device *pdev;
+ unsigned int status;
+
+ dev = (struct net_device *)dev_id;
+ ether = netdev_priv(dev);
+ pdev = ether->pdev;
+
+ spin_lock(ðer->lock);
+
+ w90p910_get_and_clear_int(dev, &status);
+
+ if (status & MISTA_RDU) {
+ netdev_rx(dev);
+
+ w90p910_trigger_rx(dev);
+
+ spin_unlock(ðer->lock);
+ return IRQ_HANDLED;
+ } else if (status & MISTA_RXBERR) {
+ dev_err(&pdev->dev, "emc rx bus error\n");
+ w90p910_reset_mac(dev);
+ }
+
+ netdev_rx(dev);
+ spin_unlock(ðer->lock);
+ return IRQ_HANDLED;
+}
+
+static int w90p910_ether_open(struct net_device *dev)
+{
+ struct w90p910_ether *ether;
+ struct platform_device *pdev;
+
+ ether = netdev_priv(dev);
+ pdev = ether->pdev;
+
+ w90p910_reset_mac(dev);
+ w90p910_set_fifo_threshold(dev);
+ w90p910_set_curdest(dev);
+ w90p910_enable_cam(dev);
+ w90p910_enable_cam_command(dev);
+ w90p910_enable_mac_interrupt(dev);
+ w90p910_set_global_maccmd(dev);
+ w90p910_enable_rx(dev, 1);
+
+ ether->rx_packets = 0x0;
+ ether->rx_bytes = 0x0;
+
+ if (request_irq(ether->txirq, w90p910_tx_interrupt,
+ 0x0, pdev->name, dev)) {
+ dev_err(&pdev->dev, "register irq tx failed\n");
+ return -EAGAIN;
+ }
+
+ if (request_irq(ether->rxirq, w90p910_rx_interrupt,
+ 0x0, pdev->name, dev)) {
+ dev_err(&pdev->dev, "register irq rx failed\n");
+ return -EAGAIN;
+ }
+
+ mod_timer(ðer->check_timer, jiffies + msecs_to_jiffies(1000));
+ netif_start_queue(dev);
+ w90p910_trigger_rx(dev);
+
+ dev_info(&pdev->dev, "%s is OPENED\n", dev->name);
+
+ return 0;
+}
+
+static void w90p910_ether_set_multicast_list(struct net_device *dev)
+{
+ struct w90p910_ether *ether;
+ unsigned int rx_mode;
+
+ ether = netdev_priv(dev);
+
+ if (dev->flags & IFF_PROMISC)
+ rx_mode = CAMCMR_AUP | CAMCMR_AMP | CAMCMR_ABP | CAMCMR_ECMP;
+ else if ((dev->flags & IFF_ALLMULTI) || dev->mc_list)
+ rx_mode = CAMCMR_AMP | CAMCMR_ABP | CAMCMR_ECMP;
+ else
+ rx_mode = CAMCMR_ECMP | CAMCMR_ABP;
+ __raw_writel(rx_mode, ether->reg + REG_CAMCMR);
+}
+
+static int w90p910_ether_ioctl(struct net_device *dev,
+ struct ifreq *ifr, int cmd)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ struct mii_ioctl_data *data = if_mii(ifr);
+
+ return generic_mii_ioctl(ðer->mii, data, cmd, NULL);
+}
+
+static void w90p910_get_drvinfo(struct net_device *dev,
+ struct ethtool_drvinfo *info)
+{
+ strcpy(info->driver, DRV_MODULE_NAME);
+ strcpy(info->version, DRV_MODULE_VERSION);
+}
+
+static int w90p910_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ return mii_ethtool_gset(ðer->mii, cmd);
+}
+
+static int w90p910_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ return mii_ethtool_sset(ðer->mii, cmd);
+}
+
+static int w90p910_nway_reset(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ return mii_nway_restart(ðer->mii);
+}
+
+static u32 w90p910_get_link(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ return mii_link_ok(ðer->mii);
+}
+
+static const struct ethtool_ops w90p910_ether_ethtool_ops = {
+ .get_settings = w90p910_get_settings,
+ .set_settings = w90p910_set_settings,
+ .get_drvinfo = w90p910_get_drvinfo,
+ .nway_reset = w90p910_nway_reset,
+ .get_link = w90p910_get_link,
+};
+
+static const struct net_device_ops w90p910_ether_netdev_ops = {
+ .ndo_open = w90p910_ether_open,
+ .ndo_stop = w90p910_ether_close,
+ .ndo_start_xmit = w90p910_ether_start_xmit,
+ .ndo_get_stats = w90p910_ether_stats,
+ .ndo_set_multicast_list = w90p910_ether_set_multicast_list,
+ .ndo_set_mac_address = set_mac_address,
+ .ndo_do_ioctl = w90p910_ether_ioctl,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_change_mtu = eth_change_mtu,
+};
+
+static void __init get_mac_address(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ struct platform_device *pdev;
+ char addr[6];
+
+ pdev = ether->pdev;
+
+ addr[0] = 0x00;
+ addr[1] = 0x02;
+ addr[2] = 0xac;
+ addr[3] = 0x55;
+ addr[4] = 0x88;
+ addr[5] = 0xa8;
+
+ if (is_valid_ether_addr(addr))
+ memcpy(dev->dev_addr, &addr, 0x06);
+ else
+ dev_err(&pdev->dev, "invalid mac address\n");
+}
+
+static int w90p910_ether_setup(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+
+ ether_setup(dev);
+ dev->netdev_ops = &w90p910_ether_netdev_ops;
+ dev->ethtool_ops = &w90p910_ether_ethtool_ops;
+
+ dev->tx_queue_len = 16;
+ dev->dma = 0x0;
+ dev->watchdog_timeo = TX_TIMEOUT;
+
+ get_mac_address(dev);
+
+ spin_lock_init(ðer->lock);
+
+ ether->cur_tx = 0x0;
+ ether->cur_rx = 0x0;
+ ether->finish_tx = 0x0;
+ ether->linkflag = 0x0;
+ ether->mii.phy_id = 0x01;
+ ether->mii.phy_id_mask = 0x1f;
+ ether->mii.reg_num_mask = 0x1f;
+ ether->mii.dev = dev;
+ ether->mii.mdio_read = w90p910_mdio_read;
+ ether->mii.mdio_write = w90p910_mdio_write;
+
+ setup_timer(ðer->check_timer, w90p910_check_link,
+ (unsigned long)dev);
+
+ return 0;
+}
+
+static int __devinit w90p910_ether_probe(struct platform_device *pdev)
+{
+ struct w90p910_ether *ether;
+ struct net_device *dev;
+ struct resource *res;
+ int error;
+
+ dev = alloc_etherdev(sizeof(struct w90p910_ether));
+ if (!dev)
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (res == NULL) {
+ dev_err(&pdev->dev, "failed to get I/O memory\n");
+ error = -ENXIO;
+ goto failed_free;
+ }
+
+ res = request_mem_region(res->start, resource_size(res), pdev->name);
+ if (res == NULL) {
+ dev_err(&pdev->dev, "failed to request I/O memory\n");
+ error = -EBUSY;
+ goto failed_free;
+ }
+
+ ether = netdev_priv(dev);
+
+ ether->reg = ioremap(res->start, resource_size(res));
+ if (ether->reg == NULL) {
+ dev_err(&pdev->dev, "failed to remap I/O memory\n");
+ error = -ENXIO;
+ goto failed_free_mem;
+ }
+
+ ether->txirq = platform_get_irq(pdev, 0);
+ if (ether->txirq < 0) {
+ dev_err(&pdev->dev, "failed to get ether tx irq\n");
+ error = -ENXIO;
+ goto failed_free_io;
+ }
+
+ ether->rxirq = platform_get_irq(pdev, 1);
+ if (ether->rxirq < 0) {
+ dev_err(&pdev->dev, "failed to get ether rx irq\n");
+ error = -ENXIO;
+ goto failed_free_txirq;
+ }
+
+ platform_set_drvdata(pdev, dev);
+
+ ether->clk = clk_get(&pdev->dev, NULL);
+ if (IS_ERR(ether->clk)) {
+ dev_err(&pdev->dev, "failed to get ether clock\n");
+ error = PTR_ERR(ether->clk);
+ goto failed_free_rxirq;
+ }
+
+ ether->rmiiclk = clk_get(&pdev->dev, "RMII");
+ if (IS_ERR(ether->rmiiclk)) {
+ dev_err(&pdev->dev, "failed to get ether clock\n");
+ error = PTR_ERR(ether->rmiiclk);
+ goto failed_put_clk;
+ }
+
+ ether->pdev = pdev;
+
+ w90p910_ether_setup(dev);
+
+ error = register_netdev(dev);
+ if (error != 0) {
+ dev_err(&pdev->dev, "Regiter EMC w90p910 FAILED\n");
+ error = -ENODEV;
+ goto failed_put_rmiiclk;
+ }
+
+ return 0;
+failed_put_rmiiclk:
+ clk_put(ether->rmiiclk);
+failed_put_clk:
+ clk_put(ether->clk);
+failed_free_rxirq:
+ free_irq(ether->rxirq, pdev);
+ platform_set_drvdata(pdev, NULL);
+failed_free_txirq:
+ free_irq(ether->txirq, pdev);
+failed_free_io:
+ iounmap(ether->reg);
+failed_free_mem:
+ release_mem_region(res->start, resource_size(res));
+failed_free:
+ free_netdev(dev);
+ return error;
+}
+
+static int __devexit w90p910_ether_remove(struct platform_device *pdev)
+{
+ struct net_device *dev = platform_get_drvdata(pdev);
+ struct w90p910_ether *ether = netdev_priv(dev);
+
+ unregister_netdev(dev);
+ clk_put(ether->rmiiclk);
+ clk_put(ether->clk);
+ del_timer_sync(ðer->check_timer);
+ platform_set_drvdata(pdev, NULL);
+ free_netdev(dev);
+ return 0;
+}
+
+static struct platform_driver w90p910_ether_driver = {
+ .probe = w90p910_ether_probe,
+ .remove = __devexit_p(w90p910_ether_remove),
+ .driver = {
+ .name = "w90p910-emc",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init w90p910_ether_init(void)
+{
+ return platform_driver_register(&w90p910_ether_driver);
+}
+
+static void __exit w90p910_ether_exit(void)
+{
+ platform_driver_unregister(&w90p910_ether_driver);
+}
+
+module_init(w90p910_ether_init);
+module_exit(w90p910_ether_exit);
+
+MODULE_AUTHOR("Wan ZongShun <mcuos.com@gmail.com>");
+MODULE_DESCRIPTION("w90p910 MAC driver!");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:w90p910-emc");
+
--
1.5.6.3
^ permalink raw reply related [flat|nested] 12+ messages in thread
* Re: [PATCH] Add mac driver for w90p910
2009-07-16 12:55 [PATCH] Add mac driver for w90p910 Wan ZongShun
@ 2009-07-16 17:42 ` Trilok Soni
2009-07-17 11:21 ` Wan ZongShun
2009-07-20 14:45 ` David Miller
1 sibling, 1 reply; 12+ messages in thread
From: Trilok Soni @ 2009-07-16 17:42 UTC (permalink / raw)
To: Wan ZongShun; +Cc: David S. Miller, linux-netdev, linux-arm-kernel, Eric.miao
Hi Wan,
> diff --git a/drivers/net/arm/Makefile b/drivers/net/arm/Makefile
> index 811a3cc..303171f 100644
> --- a/drivers/net/arm/Makefile
> +++ b/drivers/net/arm/Makefile
> @@ -11,3 +11,4 @@ obj-$(CONFIG_ARM_AT91_ETHER) += at91_ether.o
> obj-$(CONFIG_ARM_KS8695_ETHER) += ks8695net.o
> obj-$(CONFIG_EP93XX_ETH) += ep93xx_eth.o
> obj-$(CONFIG_IXP4XX_ETH) += ixp4xx_eth.o
> +obj-$(CONFIG_W90P910_ETH) += w90p910_ether.o
> diff --git a/drivers/net/arm/w90p910_ether.c b/drivers/net/arm/w90p910_ether.c
> new file mode 100644
> index 0000000..616fb79
> --- /dev/null
> +++ b/drivers/net/arm/w90p910_ether.c
> @@ -0,0 +1,1105 @@
> +/*
> + * Copyright (c) 2008-2009 Nuvoton technology corporation.
> + *
> + * Wan ZongShun <mcuos.com@gmail.com>
> + *
> + * 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;version 2 of the License.
> + *
> + */
> +
> +#include <linux/module.h>
> +#include <linux/init.h>
> +#include <linux/mii.h>
> +#include <linux/netdevice.h>
> +#include <linux/etherdevice.h>
> +#include <linux/skbuff.h>
> +#include <linux/ethtool.h>
> +#include <linux/platform_device.h>
> +#include <linux/clk.h>
> +
> +#define DRV_MODULE_NAME "w90p910-emc"
> +#define DRV_MODULE_VERSION "0.1"
> +
> +/* Ethernet MAC Registers */
> +#define REG_CAMCMR 0x00
> +#define REG_CAMEN 0x04
> +#define REG_CAMM_BASE 0x08
> +#define REG_CAML_BASE 0x0c
> +#define REG_TXDLSA 0x88
> +#define REG_RXDLSA 0x8C
> +#define REG_MCMDR 0x90
> +#define REG_MIID 0x94
> +#define REG_MIIDA 0x98
> +#define REG_FFTCR 0x9C
> +#define REG_TSDR 0xa0
> +#define REG_RSDR 0xa4
> +#define REG_DMARFC 0xa8
> +#define REG_MIEN 0xac
> +#define REG_MISTA 0xb0
> +#define REG_CTXDSA 0xcc
> +#define REG_CTXBSA 0xd0
> +#define REG_CRXDSA 0xd4
> +#define REG_CRXBSA 0xd8
> +
> +/* mac controller bit */
> +#define MCMDR_RXON 0x01
> +#define MCMDR_ACP (0x01 << 3)
> +#define MCMDR_SPCRC (0x01 << 5)
> +#define MCMDR_TXON (0x01 << 8)
> +#define MCMDR_FDUP (0x01 << 18)
> +#define MCMDR_ENMDC (0x01 << 19)
> +#define MCMDR_OPMOD (0x01 << 20)
> +#define SWR (0x01 << 24)
> +
> +/* cam command regiser */
> +#define CAMCMR_AUP 0x01
> +#define CAMCMR_AMP (0x01 << 1)
> +#define CAMCMR_ABP (0x01 << 2)
> +#define CAMCMR_CCAM (0x01 << 3)
> +#define CAMCMR_ECMP (0x01 << 4)
> +#define CAM0EN 0x01
> +
> +/* mac mii controller bit */
> +#define MDCCR (0x0a << 20)
> +#define PHYAD (0x01 << 8)
> +#define PHYWR (0x01 << 16)
> +#define PHYBUSY (0x01 << 17)
> +#define PHYPRESP (0x01 << 18)
> +#define CAM_ENTRY_SIZE 0x08
> +
> +/* rx and tx status */
> +#define TXDS_TXCP (0x01 << 19)
> +#define RXDS_CRCE (0x01 << 17)
> +#define RXDS_PTLE (0x01 << 19)
> +#define RXDS_RXGD (0x01 << 20)
> +#define RXDS_ALIE (0x01 << 21)
> +#define RXDS_RP (0x01 << 22)
> +
> +/* mac interrupt status*/
> +#define MISTA_EXDEF (0x01 << 19)
> +#define MISTA_TXBERR (0x01 << 24)
> +#define MISTA_TDU (0x01 << 23)
> +#define MISTA_RDU (0x01 << 10)
> +#define MISTA_RXBERR (0x01 << 11)
> +
> +#define ENSTART 0x01
> +#define ENRXINTR 0x01
> +#define ENRXGD (0x01 << 4)
> +#define ENRXBERR (0x01 << 11)
> +#define ENTXINTR (0x01 << 16)
> +#define ENTXCP (0x01 << 18)
> +#define ENTXABT (0x01 << 21)
> +#define ENTXBERR (0x01 << 24)
> +#define ENMDC (0x01 << 19)
> +#define PHYBUSY (0x01 << 17)
> +#define MDCCR_VAL 0xa00000
> +
> +/* rx and tx owner bit */
> +#define RX_OWEN_DMA (0x01 << 31)
> +#define RX_OWEN_CPU (~(0x03 << 30))
> +#define TX_OWEN_DMA (0x01 << 31)
> +#define TX_OWEN_CPU (~(0x01 << 31))
> +
> +/* tx frame desc controller bit */
> +#define MACTXINTEN 0x04
> +#define CRCMODE 0x02
> +#define PADDINGMODE 0x01
> +
> +/* fftcr controller bit */
> +#define TXTHD (0x03 << 8)
> +#define BLENGTH (0x01 << 20)
> +
> +/* global setting for driver */
> +#define RX_DESC_SIZE 50
> +#define TX_DESC_SIZE 10
> +#define MAX_RBUFF_SZ 0x600
> +#define MAX_TBUFF_SZ 0x600
> +#define TX_TIMEOUT 50
> +#define DELAY 1000
> +#define CAM0 0x0
> +
> +static int w90p910_mdio_read(struct net_device *dev, int phy_id, int reg);
> +
> +struct w90p910_rxbd {
> + unsigned int sl;
> + unsigned int buffer;
> + unsigned int reserved;
> + unsigned int next;
> +};
> +
> +struct w90p910_txbd {
> + unsigned int mode;
> + unsigned int buffer;
> + unsigned int sl;
> + unsigned int next;
> +};
> +
> +struct recv_pdesc {
> + struct w90p910_rxbd desclist[RX_DESC_SIZE];
> + char recv_buf[RX_DESC_SIZE][MAX_RBUFF_SZ];
> +};
> +
> +struct tran_pdesc {
> + struct w90p910_txbd desclist[TX_DESC_SIZE];
> + char tran_buf[RX_DESC_SIZE][MAX_TBUFF_SZ];
> +};
> +
> +struct w90p910_ether {
> + struct recv_pdesc *rdesc;
> + struct recv_pdesc *rdesc_phys;
> + struct tran_pdesc *tdesc;
> + struct tran_pdesc *tdesc_phys;
> + struct net_device_stats stats;
> + struct platform_device *pdev;
> + struct sk_buff *skb;
> + struct clk *clk;
> + struct clk *rmiiclk;
> + struct mii_if_info mii;
> + struct timer_list check_timer;
> + void __iomem *reg;
> + unsigned int rxirq;
> + unsigned int txirq;
> + unsigned int cur_tx;
> + unsigned int cur_rx;
> + unsigned int finish_tx;
> + unsigned int rx_packets;
> + unsigned int rx_bytes;
> + unsigned int start_tx_ptr;
> + unsigned int start_rx_ptr;
> + unsigned int linkflag;
> + spinlock_t lock;
describe what lock protects.
> +};
> +
> +
> +static void w90p910_init_desc(struct net_device *dev)
> +{
> + struct w90p910_ether *ether;
> + struct w90p910_txbd *tdesc, *tdesc_phys;
> + struct w90p910_rxbd *rdesc, *rdesc_phys;
> + unsigned int i, j;
> +
> + ether = netdev_priv(dev);
> +
> + ether->tdesc = (struct tran_pdesc *)
> + dma_alloc_coherent(NULL, sizeof(struct tran_pdesc),
> + (dma_addr_t *) ðer->tdesc_phys, GFP_KERNEL);
no-need of casting I think.
> +
> + ether->rdesc = (struct recv_pdesc *)
> + dma_alloc_coherent(NULL, sizeof(struct recv_pdesc),
> + (dma_addr_t *) ðer->rdesc_phys, GFP_KERNEL);
Ditto.
> +
> + for (i = 0; i < TX_DESC_SIZE; i++) {
> + tdesc = &(ether->tdesc->desclist[i]);
> +
> + j = ((i + 1) / TX_DESC_SIZE);
> +
> + if (j != 0) {
> + tdesc_phys = &(ether->tdesc_phys->desclist[0]);
> + ether->start_tx_ptr = (unsigned int)tdesc_phys;
> + tdesc->next = (unsigned int)ether->start_tx_ptr;
> + } else {
> + tdesc_phys = &(ether->tdesc_phys->desclist[i+1]);
> + tdesc->next = (unsigned int)tdesc_phys;
> + }
> +
> + tdesc->buffer = (unsigned int)ether->tdesc_phys->tran_buf[i];
> + tdesc->sl = 0;
> + tdesc->mode = 0;
> + }
> +
> + for (i = 0; i < RX_DESC_SIZE; i++) {
> + rdesc = &(ether->rdesc->desclist[i]);
> +
> + j = ((i + 1) / RX_DESC_SIZE);
> +
> + if (j != 0) {
> + rdesc_phys = &(ether->rdesc_phys->desclist[0]);
> + ether->start_rx_ptr = (unsigned int)rdesc_phys;
> + rdesc->next = (unsigned int)ether->start_rx_ptr;
> + } else {
> + rdesc_phys = &(ether->rdesc_phys->desclist[i+1]);
> + rdesc->next = (unsigned int)rdesc_phys;
> + }
> +
> + rdesc->sl = RX_OWEN_DMA;
> + rdesc->buffer = (unsigned int)ether->rdesc_phys->recv_buf[i];
> + }
> +}
> +
> +static void w90p910_set_fifo_threshold(struct net_device *dev)
> +{
> + struct w90p910_ether *ether = netdev_priv(dev);
> + unsigned int val;
> +
> + val = TXTHD | BLENGTH;
> + __raw_writel(val, ether->reg + REG_FFTCR);
> +}
> +
> +static void w90p910_return_default_idle(struct net_device *dev)
> +{
> + struct w90p910_ether *ether = netdev_priv(dev);
> + unsigned int val;
> +
> + val = __raw_readl(ether->reg + REG_MCMDR);
> + val |= SWR;
> + __raw_writel(val, ether->reg + REG_MCMDR);
> +}
> +
> +static void w90p910_trigger_rx(struct net_device *dev)
> +{
> + struct w90p910_ether *ether = netdev_priv(dev);
> +
> + __raw_writel(ENSTART, ether->reg + REG_RSDR);
> +}
> +
> +static void w90p910_trigger_tx(struct net_device *dev)
> +{
> + struct w90p910_ether *ether = netdev_priv(dev);
> +
> + __raw_writel(ENSTART, ether->reg + REG_TSDR);
> +}
> +
> +static void w90p910_enable_mac_interrupt(struct net_device *dev)
> +{
> + struct w90p910_ether *ether = netdev_priv(dev);
> + unsigned int val;
> +
> + val = ENTXINTR | ENRXINTR | ENRXGD | ENTXCP;
> + val |= ENTXBERR | ENRXBERR | ENTXABT;
> +
> + __raw_writel(val, ether->reg + REG_MIEN);
> +}
> +
> +static int set_mac_address(struct net_device *dev, void *addr)
> +{
how about naming it as w90p910_set_mac_address for consistency.
> + struct sockaddr *address = addr;
> +
> + if (!is_valid_ether_addr(address->sa_data))
> + return -EADDRNOTAVAIL;
> +
> + memcpy(dev->dev_addr, address->sa_data, dev->addr_len);
> + w90p910_write_cam(dev, CAM0, dev->dev_addr);
> +
> + return 0;
> +}
> +
> +
> +static int w90p910_ether_start_xmit(struct sk_buff *skb, struct net_device *dev)
> +{
> + struct w90p910_ether *ether = netdev_priv(dev);
> +
> + if (!(w90p910_send_frame(dev, skb->data, skb->len))) {
> + ether->skb = skb;
> + dev_kfree_skb_irq(skb);
> + return 0;
> + }
> + return -1;
better error code?
> +}
> +
> +static irqreturn_t w90p910_tx_interrupt(int irq, void *dev_id)
> +{
> + struct w90p910_ether *ether;
> + struct w90p910_txbd *txbd;
> + struct platform_device *pdev;
> + struct tran_pdesc *tran_pdesc;
> + struct net_device *dev;
> + unsigned int cur_entry, entry, status;
> +
> + dev = (struct net_device *)dev_id;
un-necessary casting.
> + ether = netdev_priv(dev);
> + pdev = ether->pdev;
> +
> + spin_lock(ðer->lock);
> +
> + w90p910_get_and_clear_int(dev, &status);
> +
> + cur_entry = __raw_readl(ether->reg + REG_CTXDSA);
> +
> + tran_pdesc = ether->tdesc_phys;
> + entry = (unsigned int)(&tran_pdesc->desclist[ether->finish_tx]);
> +
> + while (entry != cur_entry) {
> + txbd = ðer->tdesc->desclist[ether->finish_tx];
> +
> + ether->finish_tx = (ether->finish_tx + 1) % TX_DESC_SIZE;
> +
> + if (txbd->sl & TXDS_TXCP) {
> + ether->stats.tx_packets++;
> + ether->stats.tx_bytes += txbd->sl & 0xFFFF;
> + } else {
> + ether->stats.tx_errors++;
> + }
> +
> + txbd->sl = 0x0;
> + txbd->mode = 0x0;
> +
> + if (netif_queue_stopped(dev))
> + netif_wake_queue(dev);
> +
> + entry = (unsigned int)(&tran_pdesc->desclist[ether->finish_tx]);
> + }
> +
> + if (status & MISTA_EXDEF) {
> + dev_err(&pdev->dev, "emc defer exceed interrupt\n");
> + } else if (status & MISTA_TXBERR) {
> + dev_err(&pdev->dev, "emc bus error interrupt\n");
> + w90p910_reset_mac(dev);
> + } else if (status & MISTA_TDU) {
> + if (netif_queue_stopped(dev))
> + netif_wake_queue(dev);
> + }
indentation doesn't look correct.
> +
> + spin_unlock(ðer->lock);
> +
> + return IRQ_HANDLED;
> +}
> +
> +
> +static irqreturn_t w90p910_rx_interrupt(int irq, void *dev_id)
> +{
> + struct net_device *dev;
> + struct w90p910_ether *ether;
> + struct platform_device *pdev;
> + unsigned int status;
> +
> + dev = (struct net_device *)dev_id;
No need of casting.
> + ether = netdev_priv(dev);
> + pdev = ether->pdev;
> +
> + spin_lock(ðer->lock);
> +
> + w90p910_get_and_clear_int(dev, &status);
> +
> + if (status & MISTA_RDU) {
> + netdev_rx(dev);
> +
> + w90p910_trigger_rx(dev);
> +
> + spin_unlock(ðer->lock);
> + return IRQ_HANDLED;
> + } else if (status & MISTA_RXBERR) {
> + dev_err(&pdev->dev, "emc rx bus error\n");
> + w90p910_reset_mac(dev);
> + }
indentation problem.
> +
> + netdev_rx(dev);
> + spin_unlock(ðer->lock);
> + return IRQ_HANDLED;
> +}
> +
> +static int w90p910_ether_open(struct net_device *dev)
> +{
> + struct w90p910_ether *ether;
> + struct platform_device *pdev;
> +
> + ether = netdev_priv(dev);
> + pdev = ether->pdev;
> +
> + w90p910_reset_mac(dev);
> + w90p910_set_fifo_threshold(dev);
> + w90p910_set_curdest(dev);
> + w90p910_enable_cam(dev);
> + w90p910_enable_cam_command(dev);
> + w90p910_enable_mac_interrupt(dev);
> + w90p910_set_global_maccmd(dev);
> + w90p910_enable_rx(dev, 1);
> +
> + ether->rx_packets = 0x0;
> + ether->rx_bytes = 0x0;
> +
> + if (request_irq(ether->txirq, w90p910_tx_interrupt,
> + 0x0, pdev->name, dev)) {
> + dev_err(&pdev->dev, "register irq tx failed\n");
> + return -EAGAIN;
> + }
> +
> + if (request_irq(ether->rxirq, w90p910_rx_interrupt,
> + 0x0, pdev->name, dev)) {
> + dev_err(&pdev->dev, "register irq rx failed\n");
> + return -EAGAIN;
error path problem. You should do free_irq(ether->txirq);
> + }
> +
> + mod_timer(ðer->check_timer, jiffies + msecs_to_jiffies(1000));
> + netif_start_queue(dev);
> + w90p910_trigger_rx(dev);
> +
> + dev_info(&pdev->dev, "%s is OPENED\n", dev->name);
> +
> + return 0;
> +}
> +
> +
> +static int __devinit w90p910_ether_probe(struct platform_device *pdev)
> +{
> + struct w90p910_ether *ether;
> + struct net_device *dev;
> + struct resource *res;
> + int error;
> +
> + dev = alloc_etherdev(sizeof(struct w90p910_ether));
> + if (!dev)
> + return -ENOMEM;
> +
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + if (res == NULL) {
> + dev_err(&pdev->dev, "failed to get I/O memory\n");
> + error = -ENXIO;
> + goto failed_free;
> + }
> +
> + res = request_mem_region(res->start, resource_size(res), pdev->name);
> + if (res == NULL) {
> + dev_err(&pdev->dev, "failed to request I/O memory\n");
> + error = -EBUSY;
> + goto failed_free;
> + }
> +
> + ether = netdev_priv(dev);
> +
> + ether->reg = ioremap(res->start, resource_size(res));
> + if (ether->reg == NULL) {
> + dev_err(&pdev->dev, "failed to remap I/O memory\n");
> + error = -ENXIO;
> + goto failed_free_mem;
> + }
> +
> + ether->txirq = platform_get_irq(pdev, 0);
> + if (ether->txirq < 0) {
> + dev_err(&pdev->dev, "failed to get ether tx irq\n");
> + error = -ENXIO;
> + goto failed_free_io;
> + }
> +
> + ether->rxirq = platform_get_irq(pdev, 1);
> + if (ether->rxirq < 0) {
> + dev_err(&pdev->dev, "failed to get ether rx irq\n");
> + error = -ENXIO;
> + goto failed_free_txirq;
> + }
> +
> + platform_set_drvdata(pdev, dev);
> +
> + ether->clk = clk_get(&pdev->dev, NULL);
> + if (IS_ERR(ether->clk)) {
> + dev_err(&pdev->dev, "failed to get ether clock\n");
> + error = PTR_ERR(ether->clk);
> + goto failed_free_rxirq;
> + }
> +
> + ether->rmiiclk = clk_get(&pdev->dev, "RMII");
> + if (IS_ERR(ether->rmiiclk)) {
> + dev_err(&pdev->dev, "failed to get ether clock\n");
> + error = PTR_ERR(ether->rmiiclk);
> + goto failed_put_clk;
> + }
> +
> + ether->pdev = pdev;
> +
> + w90p910_ether_setup(dev);
> +
> + error = register_netdev(dev);
> + if (error != 0) {
> + dev_err(&pdev->dev, "Regiter EMC w90p910 FAILED\n");
> + error = -ENODEV;
> + goto failed_put_rmiiclk;
> + }
> +
> + return 0;
> +failed_put_rmiiclk:
> + clk_put(ether->rmiiclk);
> +failed_put_clk:
> + clk_put(ether->clk);
> +failed_free_rxirq:
> + free_irq(ether->rxirq, pdev);
> + platform_set_drvdata(pdev, NULL);
> +failed_free_txirq:
> + free_irq(ether->txirq, pdev);
> +failed_free_io:
> + iounmap(ether->reg);
> +failed_free_mem:
> + release_mem_region(res->start, resource_size(res));
> +failed_free:
> + free_netdev(dev);
> + return error;
> +}
> +
> +static int __devexit w90p910_ether_remove(struct platform_device *pdev)
> +{
> + struct net_device *dev = platform_get_drvdata(pdev);
> + struct w90p910_ether *ether = netdev_priv(dev);
> +
> + unregister_netdev(dev);
> + clk_put(ether->rmiiclk);
> + clk_put(ether->clk);
> + del_timer_sync(ðer->check_timer);
> + platform_set_drvdata(pdev, NULL);
> + free_netdev(dev);
I don't see free_irq for two irqs.
> + return 0;
> +}
--
---Trilok Soni
http://triloksoni.wordpress.com
http://www.linkedin.com/in/triloksoni
-------------------------------------------------------------------
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^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [PATCH] Add mac driver for w90p910
2009-07-16 17:42 ` Trilok Soni
@ 2009-07-17 11:21 ` Wan ZongShun
2009-07-19 10:16 ` Russell King - ARM Linux
0 siblings, 1 reply; 12+ messages in thread
From: Wan ZongShun @ 2009-07-17 11:21 UTC (permalink / raw)
To: Trilok Soni; +Cc: David S. Miller, linux-netdev, linux-arm-kernel, Eric.miao
Dear Trilok,
Some locks seems useless, So I remove them, and regarding the casting,
I have to keep "(dma_addr_t *)" here, as I remove it, a "warning occurs, as following:
"warning: passing argument 3 of 'dma_alloc_coherent' from incompatible pointer type"
So, I keep using it.
Now, I fixed up my patch and resubmitted it.
patch text:
Add mac driver support for evaluation board based on w90p910.
Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
---
drivers/net/arm/Kconfig | 8 +
drivers/net/arm/Makefile | 1 +
drivers/net/arm/w90p910_ether.c | 1090 +++++++++++++++++++++++++++++++++++++++
3 files changed, 1099 insertions(+), 0 deletions(-)
create mode 100644 drivers/net/arm/w90p910_ether.c
diff --git a/drivers/net/arm/Kconfig b/drivers/net/arm/Kconfig
index 2895db1..c37ee9e 100644
--- a/drivers/net/arm/Kconfig
+++ b/drivers/net/arm/Kconfig
@@ -63,3 +63,11 @@ config IXP4XX_ETH
help
Say Y here if you want to use built-in Ethernet ports
on IXP4xx processor.
+
+config W90P910_ETH
+ tristate "Nuvoton w90p910 Ethernet support"
+ depends on ARM && ARCH_W90X900
+ select PHYLIB
+ help
+ Say Y here if you want to use built-in Ethernet ports
+ on w90p910 processor.
diff --git a/drivers/net/arm/Makefile b/drivers/net/arm/Makefile
index 811a3cc..303171f 100644
--- a/drivers/net/arm/Makefile
+++ b/drivers/net/arm/Makefile
@@ -11,3 +11,4 @@ obj-$(CONFIG_ARM_AT91_ETHER) += at91_ether.o
obj-$(CONFIG_ARM_KS8695_ETHER) += ks8695net.o
obj-$(CONFIG_EP93XX_ETH) += ep93xx_eth.o
obj-$(CONFIG_IXP4XX_ETH) += ixp4xx_eth.o
+obj-$(CONFIG_W90P910_ETH) += w90p910_ether.o
diff --git a/drivers/net/arm/w90p910_ether.c b/drivers/net/arm/w90p910_ether.c
new file mode 100644
index 0000000..7b5f315
--- /dev/null
+++ b/drivers/net/arm/w90p910_ether.c
@@ -0,0 +1,1090 @@
+/*
+ * Copyright (c) 2008-2009 Nuvoton technology corporation.
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ *
+ * 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;version 2 of the License.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/mii.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/ethtool.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+
+#define DRV_MODULE_NAME "w90p910-emc"
+#define DRV_MODULE_VERSION "0.1"
+
+/* Ethernet MAC Registers */
+#define REG_CAMCMR 0x00
+#define REG_CAMEN 0x04
+#define REG_CAMM_BASE 0x08
+#define REG_CAML_BASE 0x0c
+#define REG_TXDLSA 0x88
+#define REG_RXDLSA 0x8C
+#define REG_MCMDR 0x90
+#define REG_MIID 0x94
+#define REG_MIIDA 0x98
+#define REG_FFTCR 0x9C
+#define REG_TSDR 0xa0
+#define REG_RSDR 0xa4
+#define REG_DMARFC 0xa8
+#define REG_MIEN 0xac
+#define REG_MISTA 0xb0
+#define REG_CTXDSA 0xcc
+#define REG_CTXBSA 0xd0
+#define REG_CRXDSA 0xd4
+#define REG_CRXBSA 0xd8
+
+/* mac controller bit */
+#define MCMDR_RXON 0x01
+#define MCMDR_ACP (0x01 << 3)
+#define MCMDR_SPCRC (0x01 << 5)
+#define MCMDR_TXON (0x01 << 8)
+#define MCMDR_FDUP (0x01 << 18)
+#define MCMDR_ENMDC (0x01 << 19)
+#define MCMDR_OPMOD (0x01 << 20)
+#define SWR (0x01 << 24)
+
+/* cam command regiser */
+#define CAMCMR_AUP 0x01
+#define CAMCMR_AMP (0x01 << 1)
+#define CAMCMR_ABP (0x01 << 2)
+#define CAMCMR_CCAM (0x01 << 3)
+#define CAMCMR_ECMP (0x01 << 4)
+#define CAM0EN 0x01
+
+/* mac mii controller bit */
+#define MDCCR (0x0a << 20)
+#define PHYAD (0x01 << 8)
+#define PHYWR (0x01 << 16)
+#define PHYBUSY (0x01 << 17)
+#define PHYPRESP (0x01 << 18)
+#define CAM_ENTRY_SIZE 0x08
+
+/* rx and tx status */
+#define TXDS_TXCP (0x01 << 19)
+#define RXDS_CRCE (0x01 << 17)
+#define RXDS_PTLE (0x01 << 19)
+#define RXDS_RXGD (0x01 << 20)
+#define RXDS_ALIE (0x01 << 21)
+#define RXDS_RP (0x01 << 22)
+
+/* mac interrupt status*/
+#define MISTA_EXDEF (0x01 << 19)
+#define MISTA_TXBERR (0x01 << 24)
+#define MISTA_TDU (0x01 << 23)
+#define MISTA_RDU (0x01 << 10)
+#define MISTA_RXBERR (0x01 << 11)
+
+#define ENSTART 0x01
+#define ENRXINTR 0x01
+#define ENRXGD (0x01 << 4)
+#define ENRXBERR (0x01 << 11)
+#define ENTXINTR (0x01 << 16)
+#define ENTXCP (0x01 << 18)
+#define ENTXABT (0x01 << 21)
+#define ENTXBERR (0x01 << 24)
+#define ENMDC (0x01 << 19)
+#define PHYBUSY (0x01 << 17)
+#define MDCCR_VAL 0xa00000
+
+/* rx and tx owner bit */
+#define RX_OWEN_DMA (0x01 << 31)
+#define RX_OWEN_CPU (~(0x03 << 30))
+#define TX_OWEN_DMA (0x01 << 31)
+#define TX_OWEN_CPU (~(0x01 << 31))
+
+/* tx frame desc controller bit */
+#define MACTXINTEN 0x04
+#define CRCMODE 0x02
+#define PADDINGMODE 0x01
+
+/* fftcr controller bit */
+#define TXTHD (0x03 << 8)
+#define BLENGTH (0x01 << 20)
+
+/* global setting for driver */
+#define RX_DESC_SIZE 50
+#define TX_DESC_SIZE 10
+#define MAX_RBUFF_SZ 0x600
+#define MAX_TBUFF_SZ 0x600
+#define TX_TIMEOUT 50
+#define DELAY 1000
+#define CAM0 0x0
+
+static int w90p910_mdio_read(struct net_device *dev, int phy_id, int reg);
+
+struct w90p910_rxbd {
+ unsigned int sl;
+ unsigned int buffer;
+ unsigned int reserved;
+ unsigned int next;
+};
+
+struct w90p910_txbd {
+ unsigned int mode;
+ unsigned int buffer;
+ unsigned int sl;
+ unsigned int next;
+};
+
+struct recv_pdesc {
+ struct w90p910_rxbd desclist[RX_DESC_SIZE];
+ char recv_buf[RX_DESC_SIZE][MAX_RBUFF_SZ];
+};
+
+struct tran_pdesc {
+ struct w90p910_txbd desclist[TX_DESC_SIZE];
+ char tran_buf[RX_DESC_SIZE][MAX_TBUFF_SZ];
+};
+
+struct w90p910_ether {
+ struct recv_pdesc *rdesc;
+ struct recv_pdesc *rdesc_phys;
+ struct tran_pdesc *tdesc;
+ struct tran_pdesc *tdesc_phys;
+ struct net_device_stats stats;
+ struct platform_device *pdev;
+ struct sk_buff *skb;
+ struct clk *clk;
+ struct clk *rmiiclk;
+ struct mii_if_info mii;
+ struct timer_list check_timer;
+ void __iomem *reg;
+ unsigned int rxirq;
+ unsigned int txirq;
+ unsigned int cur_tx;
+ unsigned int cur_rx;
+ unsigned int finish_tx;
+ unsigned int rx_packets;
+ unsigned int rx_bytes;
+ unsigned int start_tx_ptr;
+ unsigned int start_rx_ptr;
+ unsigned int linkflag;
+};
+
+static void update_linkspeed_register(struct net_device *dev,
+ unsigned int speed, unsigned int duplex)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ unsigned int val;
+
+ val = __raw_readl(ether->reg + REG_MCMDR);
+
+ if (speed == SPEED_100) {
+ /* 100 full/half duplex */
+ if (duplex == DUPLEX_FULL) {
+ val |= (MCMDR_OPMOD | MCMDR_FDUP);
+ } else {
+ val |= MCMDR_OPMOD;
+ val &= ~MCMDR_FDUP;
+ }
+ } else {
+ /* 10 full/half duplex */
+ if (duplex == DUPLEX_FULL) {
+ val |= MCMDR_FDUP;
+ val &= ~MCMDR_OPMOD;
+ } else {
+ val &= ~(MCMDR_FDUP | MCMDR_OPMOD);
+ }
+ }
+
+ __raw_writel(val, ether->reg + REG_MCMDR);
+}
+
+static void update_linkspeed(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ struct platform_device *pdev;
+ unsigned int bmsr, bmcr, lpa, speed, duplex;
+
+ pdev = ether->pdev;
+
+ if (!mii_link_ok(ðer->mii)) {
+ ether->linkflag = 0x0;
+ netif_carrier_off(dev);
+ dev_warn(&pdev->dev, "%s: Link down.\n", dev->name);
+ return;
+ }
+
+ if (ether->linkflag == 1)
+ return;
+
+ bmsr = w90p910_mdio_read(dev, ether->mii.phy_id, MII_BMSR);
+ bmcr = w90p910_mdio_read(dev, ether->mii.phy_id, MII_BMCR);
+
+ if (bmcr & BMCR_ANENABLE) {
+ if (!(bmsr & BMSR_ANEGCOMPLETE))
+ return;
+
+ lpa = w90p910_mdio_read(dev, ether->mii.phy_id, MII_LPA);
+
+ if ((lpa & LPA_100FULL) || (lpa & LPA_100HALF))
+ speed = SPEED_100;
+ else
+ speed = SPEED_10;
+
+ if ((lpa & LPA_100FULL) || (lpa & LPA_10FULL))
+ duplex = DUPLEX_FULL;
+ else
+ duplex = DUPLEX_HALF;
+
+ } else {
+ speed = (bmcr & BMCR_SPEED100) ? SPEED_100 : SPEED_10;
+ duplex = (bmcr & BMCR_FULLDPLX) ? DUPLEX_FULL : DUPLEX_HALF;
+ }
+
+ update_linkspeed_register(dev, speed, duplex);
+
+ dev_info(&pdev->dev, "%s: Link now %i-%s\n", dev->name, speed,
+ (duplex == DUPLEX_FULL) ? "FullDuplex" : "HalfDuplex");
+ ether->linkflag = 0x01;
+
+ netif_carrier_on(dev);
+}
+
+static void w90p910_check_link(unsigned long dev_id)
+{
+ struct net_device *dev = (struct net_device *) dev_id;
+ struct w90p910_ether *ether = netdev_priv(dev);
+
+ update_linkspeed(dev);
+ mod_timer(ðer->check_timer, jiffies + msecs_to_jiffies(1000));
+}
+
+static void w90p910_write_cam(struct net_device *dev,
+ unsigned int x, unsigned char *pval)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ unsigned int msw, lsw;
+
+ msw = (pval[0] << 24) | (pval[1] << 16) | (pval[2] << 8) | pval[3];
+
+ lsw = (pval[4] << 24) | (pval[5] << 16);
+
+ __raw_writel(lsw, ether->reg + REG_CAML_BASE + x * CAM_ENTRY_SIZE);
+ __raw_writel(msw, ether->reg + REG_CAMM_BASE + x * CAM_ENTRY_SIZE);
+}
+
+static void w90p910_init_desc(struct net_device *dev)
+{
+ struct w90p910_ether *ether;
+ struct w90p910_txbd *tdesc, *tdesc_phys;
+ struct w90p910_rxbd *rdesc, *rdesc_phys;
+ unsigned int i, j;
+
+ ether = netdev_priv(dev);
+
+ ether->tdesc = (struct tran_pdesc *)
+ dma_alloc_coherent(NULL, sizeof(struct tran_pdesc),
+ (dma_addr_t *)ðer->tdesc_phys, GFP_KERNEL);
+
+ ether->rdesc = (struct recv_pdesc *)
+ dma_alloc_coherent(NULL, sizeof(struct recv_pdesc),
+ (dma_addr_t *)ðer->rdesc_phys, GFP_KERNEL);
+
+ for (i = 0; i < TX_DESC_SIZE; i++) {
+ tdesc = &(ether->tdesc->desclist[i]);
+
+ j = ((i + 1) / TX_DESC_SIZE);
+
+ if (j != 0) {
+ tdesc_phys = &(ether->tdesc_phys->desclist[0]);
+ ether->start_tx_ptr = (unsigned int)tdesc_phys;
+ tdesc->next = (unsigned int)ether->start_tx_ptr;
+ } else {
+ tdesc_phys = &(ether->tdesc_phys->desclist[i+1]);
+ tdesc->next = (unsigned int)tdesc_phys;
+ }
+
+ tdesc->buffer = (unsigned int)ether->tdesc_phys->tran_buf[i];
+ tdesc->sl = 0;
+ tdesc->mode = 0;
+ }
+
+ for (i = 0; i < RX_DESC_SIZE; i++) {
+ rdesc = &(ether->rdesc->desclist[i]);
+
+ j = ((i + 1) / RX_DESC_SIZE);
+
+ if (j != 0) {
+ rdesc_phys = &(ether->rdesc_phys->desclist[0]);
+ ether->start_rx_ptr = (unsigned int)rdesc_phys;
+ rdesc->next = (unsigned int)ether->start_rx_ptr;
+ } else {
+ rdesc_phys = &(ether->rdesc_phys->desclist[i+1]);
+ rdesc->next = (unsigned int)rdesc_phys;
+ }
+
+ rdesc->sl = RX_OWEN_DMA;
+ rdesc->buffer = (unsigned int)ether->rdesc_phys->recv_buf[i];
+ }
+}
+
+static void w90p910_set_fifo_threshold(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ unsigned int val;
+
+ val = TXTHD | BLENGTH;
+ __raw_writel(val, ether->reg + REG_FFTCR);
+}
+
+static void w90p910_return_default_idle(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ unsigned int val;
+
+ val = __raw_readl(ether->reg + REG_MCMDR);
+ val |= SWR;
+ __raw_writel(val, ether->reg + REG_MCMDR);
+}
+
+static void w90p910_trigger_rx(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+
+ __raw_writel(ENSTART, ether->reg + REG_RSDR);
+}
+
+static void w90p910_trigger_tx(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+
+ __raw_writel(ENSTART, ether->reg + REG_TSDR);
+}
+
+static void w90p910_enable_mac_interrupt(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ unsigned int val;
+
+ val = ENTXINTR | ENRXINTR | ENRXGD | ENTXCP;
+ val |= ENTXBERR | ENRXBERR | ENTXABT;
+
+ __raw_writel(val, ether->reg + REG_MIEN);
+}
+
+static void w90p910_get_and_clear_int(struct net_device *dev,
+ unsigned int *val)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+
+ *val = __raw_readl(ether->reg + REG_MISTA);
+ __raw_writel(*val, ether->reg + REG_MISTA);
+}
+
+static void w90p910_set_global_maccmd(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ unsigned int val;
+
+ val = __raw_readl(ether->reg + REG_MCMDR);
+ val |= MCMDR_SPCRC | MCMDR_ENMDC | MCMDR_ACP | ENMDC;
+ __raw_writel(val, ether->reg + REG_MCMDR);
+}
+
+static void w90p910_enable_cam(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ unsigned int val;
+
+ w90p910_write_cam(dev, CAM0, dev->dev_addr);
+
+ val = __raw_readl(ether->reg + REG_CAMEN);
+ val |= CAM0EN;
+ __raw_writel(val, ether->reg + REG_CAMEN);
+}
+
+static void w90p910_enable_cam_command(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ unsigned int val;
+
+ val = CAMCMR_ECMP | CAMCMR_ABP | CAMCMR_AMP;
+ __raw_writel(val, ether->reg + REG_CAMCMR);
+}
+
+static void w90p910_enable_tx(struct net_device *dev, unsigned int enable)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ unsigned int val;
+
+ val = __raw_readl(ether->reg + REG_MCMDR);
+
+ if (enable)
+ val |= MCMDR_TXON;
+ else
+ val &= ~MCMDR_TXON;
+
+ __raw_writel(val, ether->reg + REG_MCMDR);
+}
+
+static void w90p910_enable_rx(struct net_device *dev, unsigned int enable)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ unsigned int val;
+
+ val = __raw_readl(ether->reg + REG_MCMDR);
+
+ if (enable)
+ val |= MCMDR_RXON;
+ else
+ val &= ~MCMDR_RXON;
+
+ __raw_writel(val, ether->reg + REG_MCMDR);
+}
+
+static void w90p910_set_curdest(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+
+ __raw_writel(ether->start_rx_ptr, ether->reg + REG_RXDLSA);
+ __raw_writel(ether->start_tx_ptr, ether->reg + REG_TXDLSA);
+}
+
+static void w90p910_reset_mac(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+
+ w90p910_enable_tx(dev, 0);
+ w90p910_enable_rx(dev, 0);
+ w90p910_set_fifo_threshold(dev);
+ w90p910_return_default_idle(dev);
+
+ if (!netif_queue_stopped(dev))
+ netif_stop_queue(dev);
+
+ w90p910_init_desc(dev);
+
+ dev->trans_start = jiffies;
+ ether->cur_tx = 0x0;
+ ether->finish_tx = 0x0;
+ ether->cur_rx = 0x0;
+
+ w90p910_set_curdest(dev);
+ w90p910_enable_cam(dev);
+ w90p910_enable_cam_command(dev);
+ w90p910_enable_mac_interrupt(dev);
+ w90p910_enable_tx(dev, 1);
+ w90p910_enable_rx(dev, 1);
+ w90p910_trigger_tx(dev);
+ w90p910_trigger_rx(dev);
+
+ dev->trans_start = jiffies;
+
+ if (netif_queue_stopped(dev))
+ netif_wake_queue(dev);
+}
+
+static void w90p910_mdio_write(struct net_device *dev,
+ int phy_id, int reg, int data)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ struct platform_device *pdev;
+ unsigned int val, i;
+
+ pdev = ether->pdev;
+
+ __raw_writel(data, ether->reg + REG_MIID);
+
+ val = (phy_id << 0x08) | reg;
+ val |= PHYBUSY | PHYWR | MDCCR_VAL;
+ __raw_writel(val, ether->reg + REG_MIIDA);
+
+ for (i = 0; i < DELAY; i++) {
+ if ((__raw_readl(ether->reg + REG_MIIDA) & PHYBUSY) == 0)
+ break;
+ }
+
+ if (i == DELAY)
+ dev_warn(&pdev->dev, "mdio write timed out\n");
+}
+
+static int w90p910_mdio_read(struct net_device *dev, int phy_id, int reg)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ struct platform_device *pdev;
+ unsigned int val, i, data;
+
+ pdev = ether->pdev;
+
+ val = (phy_id << 0x08) | reg;
+ val |= PHYBUSY | MDCCR_VAL;
+ __raw_writel(val, ether->reg + REG_MIIDA);
+
+ for (i = 0; i < DELAY; i++) {
+ if ((__raw_readl(ether->reg + REG_MIIDA) & PHYBUSY) == 0)
+ break;
+ }
+
+ if (i == DELAY) {
+ dev_warn(&pdev->dev, "mdio read timed out\n");
+ data = 0xffff;
+ } else {
+ data = __raw_readl(ether->reg + REG_MIID);
+ }
+
+ return data;
+}
+
+static int w90p910_set_mac_address(struct net_device *dev, void *addr)
+{
+ struct sockaddr *address = addr;
+
+ if (!is_valid_ether_addr(address->sa_data))
+ return -EADDRNOTAVAIL;
+
+ memcpy(dev->dev_addr, address->sa_data, dev->addr_len);
+ w90p910_write_cam(dev, CAM0, dev->dev_addr);
+
+ return 0;
+}
+
+static int w90p910_ether_close(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+
+ dma_free_writecombine(NULL, sizeof(struct w90p910_rxbd),
+ ether->rdesc, (dma_addr_t)ether->rdesc_phys);
+ dma_free_writecombine(NULL, sizeof(struct w90p910_txbd),
+ ether->tdesc, (dma_addr_t)ether->tdesc_phys);
+
+ netif_stop_queue(dev);
+
+ del_timer_sync(ðer->check_timer);
+ clk_disable(ether->rmiiclk);
+ clk_disable(ether->clk);
+
+ free_irq(ether->txirq, dev);
+ free_irq(ether->rxirq, dev);
+
+ return 0;
+}
+
+static struct net_device_stats *w90p910_ether_stats(struct net_device *dev)
+{
+ struct w90p910_ether *ether;
+
+ ether = netdev_priv(dev);
+
+ return ðer->stats;
+}
+
+static int w90p910_send_frame(struct net_device *dev,
+ unsigned char *data, int length)
+{
+ struct w90p910_ether *ether;
+ struct w90p910_txbd *txbd;
+ struct platform_device *pdev;
+ unsigned char *buffer;
+
+ ether = netdev_priv(dev);
+ pdev = ether->pdev;
+
+ txbd = ðer->tdesc->desclist[ether->cur_tx];
+ buffer = ether->tdesc->tran_buf[ether->cur_tx];
+ if (length > 1514) {
+ dev_err(&pdev->dev, "send data %d bytes, check it\n", length);
+ length = 1514;
+ }
+
+ txbd->sl = length & 0xFFFF;
+
+ memcpy(buffer, data, length);
+
+ txbd->mode = TX_OWEN_DMA | PADDINGMODE | CRCMODE | MACTXINTEN;
+
+ w90p910_enable_tx(dev, 1);
+
+ w90p910_trigger_tx(dev);
+
+ ether->cur_tx = (ether->cur_tx+1) % TX_DESC_SIZE;
+ txbd = ðer->tdesc->desclist[ether->cur_tx];
+
+ dev->trans_start = jiffies;
+
+ if (txbd->mode & TX_OWEN_DMA)
+ netif_stop_queue(dev);
+
+ return 0;
+}
+
+static int w90p910_ether_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+
+ if (!(w90p910_send_frame(dev, skb->data, skb->len))) {
+ ether->skb = skb;
+ dev_kfree_skb_irq(skb);
+ return 0;
+ }
+ return -EAGAIN;
+}
+
+static irqreturn_t w90p910_tx_interrupt(int irq, void *dev_id)
+{
+ struct w90p910_ether *ether;
+ struct w90p910_txbd *txbd;
+ struct platform_device *pdev;
+ struct tran_pdesc *tran_pdesc;
+ struct net_device *dev;
+ unsigned int cur_entry, entry, status;
+
+ dev = dev_id;
+ ether = netdev_priv(dev);
+ pdev = ether->pdev;
+
+ w90p910_get_and_clear_int(dev, &status);
+
+ cur_entry = __raw_readl(ether->reg + REG_CTXDSA);
+
+ tran_pdesc = ether->tdesc_phys;
+ entry = (unsigned int)(&tran_pdesc->desclist[ether->finish_tx]);
+
+ while (entry != cur_entry) {
+ txbd = ðer->tdesc->desclist[ether->finish_tx];
+
+ ether->finish_tx = (ether->finish_tx + 1) % TX_DESC_SIZE;
+
+ if (txbd->sl & TXDS_TXCP) {
+ ether->stats.tx_packets++;
+ ether->stats.tx_bytes += txbd->sl & 0xFFFF;
+ } else {
+ ether->stats.tx_errors++;
+ }
+
+ txbd->sl = 0x0;
+ txbd->mode = 0x0;
+
+ if (netif_queue_stopped(dev))
+ netif_wake_queue(dev);
+
+ entry = (unsigned int)(&tran_pdesc->desclist[ether->finish_tx]);
+ }
+
+ if (status & MISTA_EXDEF) {
+ dev_err(&pdev->dev, "emc defer exceed interrupt\n");
+ } else if (status & MISTA_TXBERR) {
+ dev_err(&pdev->dev, "emc bus error interrupt\n");
+ w90p910_reset_mac(dev);
+ } else if (status & MISTA_TDU) {
+ if (netif_queue_stopped(dev))
+ netif_wake_queue(dev);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static void netdev_rx(struct net_device *dev)
+{
+ struct w90p910_ether *ether;
+ struct w90p910_rxbd *rxbd;
+ struct platform_device *pdev;
+ struct recv_pdesc *rdesc_phys;
+ struct sk_buff *skb;
+ unsigned char *data;
+ unsigned int length, status, val, entry;
+
+ ether = netdev_priv(dev);
+ pdev = ether->pdev;
+ rdesc_phys = ether->rdesc_phys;
+
+ rxbd = ðer->rdesc->desclist[ether->cur_rx];
+
+ do {
+ val = __raw_readl(ether->reg + REG_CRXDSA);
+ entry = (unsigned int)&rdesc_phys->desclist[ether->cur_rx];
+
+ if (val == entry)
+ break;
+
+ status = rxbd->sl;
+ length = status & 0xFFFF;
+
+ if (status & RXDS_RXGD) {
+ data = ether->rdesc->recv_buf[ether->cur_rx];
+ skb = dev_alloc_skb(length+2);
+ if (!skb) {
+ dev_err(&pdev->dev, "get skb buffer error\n");
+ ether->stats.rx_dropped++;
+ return;
+ }
+
+ skb->dev = dev;
+ skb_reserve(skb, 2);
+ skb_put(skb, length);
+ skb_copy_to_linear_data(skb, data, length);
+ skb->protocol = eth_type_trans(skb, dev);
+ ether->stats.rx_packets++;
+ ether->stats.rx_bytes += length;
+ netif_rx(skb);
+ } else {
+ ether->stats.rx_errors++;
+
+ if (status & RXDS_RP) {
+ dev_err(&pdev->dev, "rx runt err\n");
+ ether->stats.rx_length_errors++;
+ } else if (status & RXDS_CRCE) {
+ dev_err(&pdev->dev, "rx crc err\n");
+ ether->stats.rx_crc_errors++;
+ } else if (status & RXDS_ALIE) {
+ dev_err(&pdev->dev, "rx aligment err\n");
+ ether->stats.rx_frame_errors++;
+ } else if (status & RXDS_PTLE) {
+ dev_err(&pdev->dev, "rx longer err\n");
+ ether->stats.rx_over_errors++;
+ }
+ }
+
+ rxbd->sl = RX_OWEN_DMA;
+ rxbd->reserved = 0x0;
+ ether->cur_rx = (ether->cur_rx+1) % RX_DESC_SIZE;
+ rxbd = ðer->rdesc->desclist[ether->cur_rx];
+
+ dev->last_rx = jiffies;
+ } while (1);
+}
+
+static irqreturn_t w90p910_rx_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev;
+ struct w90p910_ether *ether;
+ struct platform_device *pdev;
+ unsigned int status;
+
+ dev = dev_id;
+ ether = netdev_priv(dev);
+ pdev = ether->pdev;
+
+ w90p910_get_and_clear_int(dev, &status);
+
+ if (status & MISTA_RDU) {
+ netdev_rx(dev);
+ w90p910_trigger_rx(dev);
+
+ return IRQ_HANDLED;
+ } else if (status & MISTA_RXBERR) {
+ dev_err(&pdev->dev, "emc rx bus error\n");
+ w90p910_reset_mac(dev);
+ }
+
+ netdev_rx(dev);
+ return IRQ_HANDLED;
+}
+
+static int w90p910_ether_open(struct net_device *dev)
+{
+ struct w90p910_ether *ether;
+ struct platform_device *pdev;
+
+ ether = netdev_priv(dev);
+ pdev = ether->pdev;
+
+ w90p910_reset_mac(dev);
+ w90p910_set_fifo_threshold(dev);
+ w90p910_set_curdest(dev);
+ w90p910_enable_cam(dev);
+ w90p910_enable_cam_command(dev);
+ w90p910_enable_mac_interrupt(dev);
+ w90p910_set_global_maccmd(dev);
+ w90p910_enable_rx(dev, 1);
+
+ ether->rx_packets = 0x0;
+ ether->rx_bytes = 0x0;
+
+ if (request_irq(ether->txirq, w90p910_tx_interrupt,
+ 0x0, pdev->name, dev)) {
+ dev_err(&pdev->dev, "register irq tx failed\n");
+ return -EAGAIN;
+ }
+
+ if (request_irq(ether->rxirq, w90p910_rx_interrupt,
+ 0x0, pdev->name, dev)) {
+ dev_err(&pdev->dev, "register irq rx failed\n");
+ free_irq(ether->txirq, dev);
+ return -EAGAIN;
+ }
+
+ mod_timer(ðer->check_timer, jiffies + msecs_to_jiffies(1000));
+ netif_start_queue(dev);
+ w90p910_trigger_rx(dev);
+
+ dev_info(&pdev->dev, "%s is OPENED\n", dev->name);
+
+ return 0;
+}
+
+static void w90p910_ether_set_multicast_list(struct net_device *dev)
+{
+ struct w90p910_ether *ether;
+ unsigned int rx_mode;
+
+ ether = netdev_priv(dev);
+
+ if (dev->flags & IFF_PROMISC)
+ rx_mode = CAMCMR_AUP | CAMCMR_AMP | CAMCMR_ABP | CAMCMR_ECMP;
+ else if ((dev->flags & IFF_ALLMULTI) || dev->mc_list)
+ rx_mode = CAMCMR_AMP | CAMCMR_ABP | CAMCMR_ECMP;
+ else
+ rx_mode = CAMCMR_ECMP | CAMCMR_ABP;
+ __raw_writel(rx_mode, ether->reg + REG_CAMCMR);
+}
+
+static int w90p910_ether_ioctl(struct net_device *dev,
+ struct ifreq *ifr, int cmd)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ struct mii_ioctl_data *data = if_mii(ifr);
+
+ return generic_mii_ioctl(ðer->mii, data, cmd, NULL);
+}
+
+static void w90p910_get_drvinfo(struct net_device *dev,
+ struct ethtool_drvinfo *info)
+{
+ strcpy(info->driver, DRV_MODULE_NAME);
+ strcpy(info->version, DRV_MODULE_VERSION);
+}
+
+static int w90p910_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ return mii_ethtool_gset(ðer->mii, cmd);
+}
+
+static int w90p910_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ return mii_ethtool_sset(ðer->mii, cmd);
+}
+
+static int w90p910_nway_reset(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ return mii_nway_restart(ðer->mii);
+}
+
+static u32 w90p910_get_link(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ return mii_link_ok(ðer->mii);
+}
+
+static const struct ethtool_ops w90p910_ether_ethtool_ops = {
+ .get_settings = w90p910_get_settings,
+ .set_settings = w90p910_set_settings,
+ .get_drvinfo = w90p910_get_drvinfo,
+ .nway_reset = w90p910_nway_reset,
+ .get_link = w90p910_get_link,
+};
+
+static const struct net_device_ops w90p910_ether_netdev_ops = {
+ .ndo_open = w90p910_ether_open,
+ .ndo_stop = w90p910_ether_close,
+ .ndo_start_xmit = w90p910_ether_start_xmit,
+ .ndo_get_stats = w90p910_ether_stats,
+ .ndo_set_multicast_list = w90p910_ether_set_multicast_list,
+ .ndo_set_mac_address = w90p910_set_mac_address,
+ .ndo_do_ioctl = w90p910_ether_ioctl,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_change_mtu = eth_change_mtu,
+};
+
+static void __init get_mac_address(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+ struct platform_device *pdev;
+ char addr[6];
+
+ pdev = ether->pdev;
+
+ addr[0] = 0x00;
+ addr[1] = 0x02;
+ addr[2] = 0xac;
+ addr[3] = 0x55;
+ addr[4] = 0x88;
+ addr[5] = 0xa8;
+
+ if (is_valid_ether_addr(addr))
+ memcpy(dev->dev_addr, &addr, 0x06);
+ else
+ dev_err(&pdev->dev, "invalid mac address\n");
+}
+
+static int w90p910_ether_setup(struct net_device *dev)
+{
+ struct w90p910_ether *ether = netdev_priv(dev);
+
+ ether_setup(dev);
+ dev->netdev_ops = &w90p910_ether_netdev_ops;
+ dev->ethtool_ops = &w90p910_ether_ethtool_ops;
+
+ dev->tx_queue_len = 16;
+ dev->dma = 0x0;
+ dev->watchdog_timeo = TX_TIMEOUT;
+
+ get_mac_address(dev);
+
+ ether->cur_tx = 0x0;
+ ether->cur_rx = 0x0;
+ ether->finish_tx = 0x0;
+ ether->linkflag = 0x0;
+ ether->mii.phy_id = 0x01;
+ ether->mii.phy_id_mask = 0x1f;
+ ether->mii.reg_num_mask = 0x1f;
+ ether->mii.dev = dev;
+ ether->mii.mdio_read = w90p910_mdio_read;
+ ether->mii.mdio_write = w90p910_mdio_write;
+
+ setup_timer(ðer->check_timer, w90p910_check_link,
+ (unsigned long)dev);
+
+ return 0;
+}
+
+static int __devinit w90p910_ether_probe(struct platform_device *pdev)
+{
+ struct w90p910_ether *ether;
+ struct net_device *dev;
+ struct resource *res;
+ int error;
+
+ dev = alloc_etherdev(sizeof(struct w90p910_ether));
+ if (!dev)
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (res == NULL) {
+ dev_err(&pdev->dev, "failed to get I/O memory\n");
+ error = -ENXIO;
+ goto failed_free;
+ }
+
+ res = request_mem_region(res->start, resource_size(res), pdev->name);
+ if (res == NULL) {
+ dev_err(&pdev->dev, "failed to request I/O memory\n");
+ error = -EBUSY;
+ goto failed_free;
+ }
+
+ ether = netdev_priv(dev);
+
+ ether->reg = ioremap(res->start, resource_size(res));
+ if (ether->reg == NULL) {
+ dev_err(&pdev->dev, "failed to remap I/O memory\n");
+ error = -ENXIO;
+ goto failed_free_mem;
+ }
+
+ ether->txirq = platform_get_irq(pdev, 0);
+ if (ether->txirq < 0) {
+ dev_err(&pdev->dev, "failed to get ether tx irq\n");
+ error = -ENXIO;
+ goto failed_free_io;
+ }
+
+ ether->rxirq = platform_get_irq(pdev, 1);
+ if (ether->rxirq < 0) {
+ dev_err(&pdev->dev, "failed to get ether rx irq\n");
+ error = -ENXIO;
+ goto failed_free_txirq;
+ }
+
+ platform_set_drvdata(pdev, dev);
+
+ ether->clk = clk_get(&pdev->dev, NULL);
+ if (IS_ERR(ether->clk)) {
+ dev_err(&pdev->dev, "failed to get ether clock\n");
+ error = PTR_ERR(ether->clk);
+ goto failed_free_rxirq;
+ }
+
+ ether->rmiiclk = clk_get(&pdev->dev, "RMII");
+ if (IS_ERR(ether->rmiiclk)) {
+ dev_err(&pdev->dev, "failed to get ether clock\n");
+ error = PTR_ERR(ether->rmiiclk);
+ goto failed_put_clk;
+ }
+
+ ether->pdev = pdev;
+
+ w90p910_ether_setup(dev);
+
+ error = register_netdev(dev);
+ if (error != 0) {
+ dev_err(&pdev->dev, "Regiter EMC w90p910 FAILED\n");
+ error = -ENODEV;
+ goto failed_put_rmiiclk;
+ }
+
+ return 0;
+failed_put_rmiiclk:
+ clk_put(ether->rmiiclk);
+failed_put_clk:
+ clk_put(ether->clk);
+failed_free_rxirq:
+ free_irq(ether->rxirq, pdev);
+ platform_set_drvdata(pdev, NULL);
+failed_free_txirq:
+ free_irq(ether->txirq, pdev);
+failed_free_io:
+ iounmap(ether->reg);
+failed_free_mem:
+ release_mem_region(res->start, resource_size(res));
+failed_free:
+ free_netdev(dev);
+ return error;
+}
+
+static int __devexit w90p910_ether_remove(struct platform_device *pdev)
+{
+ struct net_device *dev = platform_get_drvdata(pdev);
+ struct w90p910_ether *ether = netdev_priv(dev);
+
+ unregister_netdev(dev);
+ clk_put(ether->rmiiclk);
+ clk_put(ether->clk);
+ del_timer_sync(ðer->check_timer);
+ platform_set_drvdata(pdev, NULL);
+ free_irq(ether->txirq, dev);
+ free_irq(ether->rxirq, dev);
+ free_netdev(dev);
+ return 0;
+}
+
+static struct platform_driver w90p910_ether_driver = {
+ .probe = w90p910_ether_probe,
+ .remove = __devexit_p(w90p910_ether_remove),
+ .driver = {
+ .name = "w90p910-emc",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init w90p910_ether_init(void)
+{
+ return platform_driver_register(&w90p910_ether_driver);
+}
+
+static void __exit w90p910_ether_exit(void)
+{
+ platform_driver_unregister(&w90p910_ether_driver);
+}
+
+module_init(w90p910_ether_init);
+module_exit(w90p910_ether_exit);
+
+MODULE_AUTHOR("Wan ZongShun <mcuos.com@gmail.com>");
+MODULE_DESCRIPTION("w90p910 MAC driver!");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:w90p910-emc");
+
--
1.5.6.3
^ permalink raw reply related [flat|nested] 12+ messages in thread
* Re: [PATCH] Add mac driver for w90p910
2009-07-17 11:21 ` Wan ZongShun
@ 2009-07-19 10:16 ` Russell King - ARM Linux
0 siblings, 0 replies; 12+ messages in thread
From: Russell King - ARM Linux @ 2009-07-19 10:16 UTC (permalink / raw)
To: Wan ZongShun
Cc: Trilok Soni, David S. Miller, linux-netdev, linux-arm-kernel,
Eric.miao
On Fri, Jul 17, 2009 at 07:21:37PM +0800, Wan ZongShun wrote:
> Some locks seems useless, So I remove them, and regarding the casting,
> I have to keep "(dma_addr_t *)" here, as I remove it, a "warning occurs, as following:
> "warning: passing argument 3 of 'dma_alloc_coherent' from incompatible pointer type"
This tends to mean you don't have things quite right then. Below are
some suggestions which should resolve this.
> +struct w90p910_ether {
> + struct recv_pdesc *rdesc;
> + struct recv_pdesc *rdesc_phys;
dma_addr_t rdesc_phys;
> + struct tran_pdesc *tdesc;
> + struct tran_pdesc *tdesc_phys;
dma_addr_t tdesc_phys;
> + struct net_device_stats stats;
> + struct platform_device *pdev;
> + struct sk_buff *skb;
> + struct clk *clk;
> + struct clk *rmiiclk;
> + struct mii_if_info mii;
> + struct timer_list check_timer;
> + void __iomem *reg;
> + unsigned int rxirq;
> + unsigned int txirq;
> + unsigned int cur_tx;
> + unsigned int cur_rx;
> + unsigned int finish_tx;
> + unsigned int rx_packets;
> + unsigned int rx_bytes;
> + unsigned int start_tx_ptr;
> + unsigned int start_rx_ptr;
> + unsigned int linkflag;
> +};
...
> +static void w90p910_init_desc(struct net_device *dev)
> +{
> + struct w90p910_ether *ether;
> + struct w90p910_txbd *tdesc, *tdesc_phys;
> + struct w90p910_rxbd *rdesc, *rdesc_phys;
> + unsigned int i, j;
> +
> + ether = netdev_priv(dev);
> +
> + ether->tdesc = (struct tran_pdesc *)
> + dma_alloc_coherent(NULL, sizeof(struct tran_pdesc),
> + (dma_addr_t *)ðer->tdesc_phys, GFP_KERNEL);
> +
> + ether->rdesc = (struct recv_pdesc *)
> + dma_alloc_coherent(NULL, sizeof(struct recv_pdesc),
> + (dma_addr_t *)ðer->rdesc_phys, GFP_KERNEL);
ether->tdesc = dma_alloc_cohernet(NULL, sizeof(struct tran_pdesc),
ðer->tdesc_phys, GFP_KERNEL);
ether->rdesc = dma_alloc_cohernet(NULL, sizeof(struct recv_pdesc),
ðer->rdesc_phys, GFP_KERNEL);
Note that these functions can fail and return a NULL pointer - you need
to check for that. Also I wonder why you're not passing ðer->pdev->dev
as the first argument.
> +
> + for (i = 0; i < TX_DESC_SIZE; i++) {
> + tdesc = &(ether->tdesc->desclist[i]);
> +
> + j = ((i + 1) / TX_DESC_SIZE);
> +
> + if (j != 0) {
This is a weird way of detecting the last interation in the loop.
Wouldn't:
if (i == TX_DESC_SIZE - 1) {
be sufficient?
> + tdesc_phys = &(ether->tdesc_phys->desclist[0]);
> + ether->start_tx_ptr = (unsigned int)tdesc_phys;
> + tdesc->next = (unsigned int)ether->start_tx_ptr;
> + } else {
> + tdesc_phys = &(ether->tdesc_phys->desclist[i+1]);
> + tdesc->next = (unsigned int)tdesc_phys;
> + }
> +
> + tdesc->buffer = (unsigned int)ether->tdesc_phys->tran_buf[i];
> + tdesc->sl = 0;
> + tdesc->mode = 0;
> + }
How about this instead:
for (i = 0; i < TX_DESC_SIZE; i++) {
unsigned int offset;
tdesc = &(ether->tdesc->desclist[i]);
if (i == TX_DESC_SIZE - 1)
offset = offsetof(struct tran_pdesc, desclist[0]);
else
offset = offsetof(struct tran_pdesc, desclist[i + 1]);
tdesc->next = ether->tdesc_phys + offset;
tdesc->buffer = ether->tdesc_phys +
offsetof(struct tran_pdesc, tran_buf[i]);
tdesc->sl = 0;
tdesc->mode = 0;
}
ether->start_tx_ptr = ether->tdesc_phys;
> +
> + for (i = 0; i < RX_DESC_SIZE; i++) {
> + rdesc = &(ether->rdesc->desclist[i]);
> +
> + j = ((i + 1) / RX_DESC_SIZE);
> +
> + if (j != 0) {
> + rdesc_phys = &(ether->rdesc_phys->desclist[0]);
> + ether->start_rx_ptr = (unsigned int)rdesc_phys;
> + rdesc->next = (unsigned int)ether->start_rx_ptr;
> + } else {
> + rdesc_phys = &(ether->rdesc_phys->desclist[i+1]);
> + rdesc->next = (unsigned int)rdesc_phys;
> + }
> +
> + rdesc->sl = RX_OWEN_DMA;
> + rdesc->buffer = (unsigned int)ether->rdesc_phys->recv_buf[i];
> + }
Same kind of fixup here.
> +}
...
> +static int w90p910_ether_close(struct net_device *dev)
> +{
> + struct w90p910_ether *ether = netdev_priv(dev);
> +
> + dma_free_writecombine(NULL, sizeof(struct w90p910_rxbd),
> + ether->rdesc, (dma_addr_t)ether->rdesc_phys);
> + dma_free_writecombine(NULL, sizeof(struct w90p910_txbd),
> + ether->tdesc, (dma_addr_t)ether->tdesc_phys);
With rdesc_phys and tdesc_phys correctly typed, these casts can go away.
These functions should also be dma_free_cohernet(), and also note comment
about first argument for dma_alloc_coherent() also applies here.
> +
> + netif_stop_queue(dev);
> +
> + del_timer_sync(ðer->check_timer);
> + clk_disable(ether->rmiiclk);
> + clk_disable(ether->clk);
> +
> + free_irq(ether->txirq, dev);
> + free_irq(ether->rxirq, dev);
> +
> + return 0;
> +}
...
> +static irqreturn_t w90p910_tx_interrupt(int irq, void *dev_id)
> +{
> + struct w90p910_ether *ether;
> + struct w90p910_txbd *txbd;
> + struct platform_device *pdev;
> + struct tran_pdesc *tran_pdesc;
> + struct net_device *dev;
> + unsigned int cur_entry, entry, status;
> +
> + dev = dev_id;
> + ether = netdev_priv(dev);
> + pdev = ether->pdev;
> +
> + w90p910_get_and_clear_int(dev, &status);
> +
> + cur_entry = __raw_readl(ether->reg + REG_CTXDSA);
> +
> + tran_pdesc = ether->tdesc_phys;
> + entry = (unsigned int)(&tran_pdesc->desclist[ether->finish_tx]);
entry = ether->tdesc_phys +
offsetof(struct tran_pdesc, desclist[ether->finish_tx]);
> +
> + while (entry != cur_entry) {
> + txbd = ðer->tdesc->desclist[ether->finish_tx];
> +
> + ether->finish_tx = (ether->finish_tx + 1) % TX_DESC_SIZE;
Division and modulus can be expensive when not powers of two. Would:
if (++ether->finish_tx >= TX_DESC_SIZE)
ether->finish_tx = 0;
be better?
> +
> + if (txbd->sl & TXDS_TXCP) {
> + ether->stats.tx_packets++;
> + ether->stats.tx_bytes += txbd->sl & 0xFFFF;
> + } else {
> + ether->stats.tx_errors++;
> + }
> +
> + txbd->sl = 0x0;
> + txbd->mode = 0x0;
> +
> + if (netif_queue_stopped(dev))
> + netif_wake_queue(dev);
> +
> + entry = (unsigned int)(&tran_pdesc->desclist[ether->finish_tx]);
entry = ether->tdesc_phys +
offsetof(struct tran_pdesc, desclist[ether->finish_tx]);
> + }
> +
> + if (status & MISTA_EXDEF) {
> + dev_err(&pdev->dev, "emc defer exceed interrupt\n");
> + } else if (status & MISTA_TXBERR) {
> + dev_err(&pdev->dev, "emc bus error interrupt\n");
> + w90p910_reset_mac(dev);
> + } else if (status & MISTA_TDU) {
> + if (netif_queue_stopped(dev))
> + netif_wake_queue(dev);
> + }
> +
> + return IRQ_HANDLED;
> +}
> +
> +static void netdev_rx(struct net_device *dev)
> +{
> + struct w90p910_ether *ether;
> + struct w90p910_rxbd *rxbd;
> + struct platform_device *pdev;
> + struct recv_pdesc *rdesc_phys;
> + struct sk_buff *skb;
> + unsigned char *data;
> + unsigned int length, status, val, entry;
> +
> + ether = netdev_priv(dev);
> + pdev = ether->pdev;
> + rdesc_phys = ether->rdesc_phys;
> +
> + rxbd = ðer->rdesc->desclist[ether->cur_rx];
> +
> + do {
> + val = __raw_readl(ether->reg + REG_CRXDSA);
> + entry = (unsigned int)&rdesc_phys->desclist[ether->cur_rx];
Same kind of fixups as above.
> +
> + if (val == entry)
> + break;
> +
> + status = rxbd->sl;
> + length = status & 0xFFFF;
> +
> + if (status & RXDS_RXGD) {
> + data = ether->rdesc->recv_buf[ether->cur_rx];
> + skb = dev_alloc_skb(length+2);
> + if (!skb) {
> + dev_err(&pdev->dev, "get skb buffer error\n");
> + ether->stats.rx_dropped++;
> + return;
> + }
> +
> + skb->dev = dev;
> + skb_reserve(skb, 2);
> + skb_put(skb, length);
> + skb_copy_to_linear_data(skb, data, length);
> + skb->protocol = eth_type_trans(skb, dev);
> + ether->stats.rx_packets++;
> + ether->stats.rx_bytes += length;
> + netif_rx(skb);
> + } else {
> + ether->stats.rx_errors++;
> +
> + if (status & RXDS_RP) {
> + dev_err(&pdev->dev, "rx runt err\n");
> + ether->stats.rx_length_errors++;
> + } else if (status & RXDS_CRCE) {
> + dev_err(&pdev->dev, "rx crc err\n");
> + ether->stats.rx_crc_errors++;
> + } else if (status & RXDS_ALIE) {
> + dev_err(&pdev->dev, "rx aligment err\n");
> + ether->stats.rx_frame_errors++;
> + } else if (status & RXDS_PTLE) {
> + dev_err(&pdev->dev, "rx longer err\n");
> + ether->stats.rx_over_errors++;
> + }
> + }
> +
> + rxbd->sl = RX_OWEN_DMA;
> + rxbd->reserved = 0x0;
> + ether->cur_rx = (ether->cur_rx+1) % RX_DESC_SIZE;
> + rxbd = ðer->rdesc->desclist[ether->cur_rx];
> +
> + dev->last_rx = jiffies;
> + } while (1);
> +}
...
> +static int __devexit w90p910_ether_remove(struct platform_device *pdev)
> +{
> + struct net_device *dev = platform_get_drvdata(pdev);
> + struct w90p910_ether *ether = netdev_priv(dev);
> +
> + unregister_netdev(dev);
> + clk_put(ether->rmiiclk);
> + clk_put(ether->clk);
> + del_timer_sync(ðer->check_timer);
> + platform_set_drvdata(pdev, NULL);
> + free_irq(ether->txirq, dev);
> + free_irq(ether->rxirq, dev);
iounmap? release_mem_region?
> + free_netdev(dev);
> + return 0;
> +}
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [PATCH] Add mac driver for w90p910
2009-07-16 12:55 [PATCH] Add mac driver for w90p910 Wan ZongShun
2009-07-16 17:42 ` Trilok Soni
@ 2009-07-20 14:45 ` David Miller
2009-07-20 17:49 ` Trilok Soni
1 sibling, 1 reply; 12+ messages in thread
From: David Miller @ 2009-07-20 14:45 UTC (permalink / raw)
To: mcuos.com; +Cc: netdev, linux-arm-kernel, eric.y.miao
From: Wan ZongShun <mcuos.com@gmail.com>
Date: Thu, 16 Jul 2009 20:55:05 +0800
> Add mac driver support for evaluation board based on w90p910.
>
> Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Applied, thanks.
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [PATCH] Add mac driver for w90p910
2009-07-20 14:45 ` David Miller
@ 2009-07-20 17:49 ` Trilok Soni
2009-07-20 17:52 ` David Miller
0 siblings, 1 reply; 12+ messages in thread
From: Trilok Soni @ 2009-07-20 17:49 UTC (permalink / raw)
To: David Miller; +Cc: mcuos.com, netdev, linux-arm-kernel, eric.y.miao
Hi David,
On Mon, Jul 20, 2009 at 8:15 PM, David Miller<davem@davemloft.net> wrote:
> From: Wan ZongShun <mcuos.com@gmail.com>
> Date: Thu, 16 Jul 2009 20:55:05 +0800
>
>> Add mac driver support for evaluation board based on w90p910.
>>
>> Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
>
> Applied, thanks.
I thought Wan will send us the updated patch with fixing comments as
pointed by Russell.
Wan, could you please send updated patch.
--
---Trilok Soni
http://triloksoni.wordpress.com
http://www.linkedin.com/in/triloksoni
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [PATCH] Add mac driver for w90p910
2009-07-20 17:49 ` Trilok Soni
@ 2009-07-20 17:52 ` David Miller
2009-07-21 3:40 ` Wan ZongShun
` (2 more replies)
0 siblings, 3 replies; 12+ messages in thread
From: David Miller @ 2009-07-20 17:52 UTC (permalink / raw)
To: soni.trilok; +Cc: mcuos.com, netdev, linux-arm-kernel, eric.y.miao
From: Trilok Soni <soni.trilok@gmail.com>
Date: Mon, 20 Jul 2009 23:19:38 +0530
> Hi David,
>
> On Mon, Jul 20, 2009 at 8:15 PM, David Miller<davem@davemloft.net> wrote:
>> From: Wan ZongShun <mcuos.com@gmail.com>
>> Date: Thu, 16 Jul 2009 20:55:05 +0800
>>
>>> Add mac driver support for evaluation board based on w90p910.
>>>
>>> Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
>>
>> Applied, thanks.
>
> I thought Wan will send us the updated patch with fixing comments as
> pointed by Russell.
>
> Wan, could you please send updated patch.
Send me a relative patch as I've already pushed this driver commit
publicly and that cannot be undone without a lot of pain.
^ permalink raw reply [flat|nested] 12+ messages in thread
* Re: [PATCH] Add mac driver for w90p910
2009-07-20 17:52 ` David Miller
@ 2009-07-21 3:40 ` Wan ZongShun
2009-07-23 4:18 ` [PATCH] fixed up the previous " Wan ZongShun
2009-07-23 4:52 ` [PATCH] Add mac driver " Wan ZongShun
2 siblings, 0 replies; 12+ messages in thread
From: Wan ZongShun @ 2009-07-21 3:40 UTC (permalink / raw)
To: David Miller; +Cc: soni.trilok, netdev, linux-arm-kernel, eric.y.miao
Dear sirs,
Thank Russell, Trilok for reviewing my patch.
Thank David for applying my patch.
Thanks for your help regarding this patch, a bit busy to do other job,
so late to updte
this patch, I will submitted a patch relative to the previous patch.
2009/7/21 David Miller <davem@davemloft.net>:
> From: Trilok Soni <soni.trilok@gmail.com>
> Date: Mon, 20 Jul 2009 23:19:38 +0530
>
>> Hi David,
>>
>> On Mon, Jul 20, 2009 at 8:15 PM, David Miller<davem@davemloft.net> wrote:
>>> From: Wan ZongShun <mcuos.com@gmail.com>
>>> Date: Thu, 16 Jul 2009 20:55:05 +0800
>>>
>>>> Add mac driver support for evaluation board based on w90p910.
>>>>
>>>> Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
>>>
>>> Applied, thanks.
>>
>> I thought Wan will send us the updated patch with fixing comments as
>> pointed by Russell.
>>
>> Wan, could you please send updated patch.
>
> Send me a relative patch as I've already pushed this driver commit
> publicly and that cannot be undone without a lot of pain.
>
--
Wan z.s
-------------------------------------------------------------------
List admin: http://lists.arm.linux.org.uk/mailman/listinfo/linux-arm-kernel
FAQ: http://www.arm.linux.org.uk/mailinglists/faq.php
Etiquette: http://www.arm.linux.org.uk/mailinglists/etiquette.php
^ permalink raw reply [flat|nested] 12+ messages in thread
* [PATCH] fixed up the previous mac driver for w90p910
2009-07-20 17:52 ` David Miller
2009-07-21 3:40 ` Wan ZongShun
@ 2009-07-23 4:18 ` Wan ZongShun
2009-07-23 4:33 ` [PATCH] Add mac driver patch fixed " Wan ZongShun
2009-07-23 4:52 ` [PATCH] Add mac driver " Wan ZongShun
2 siblings, 1 reply; 12+ messages in thread
From: Wan ZongShun @ 2009-07-23 4:18 UTC (permalink / raw)
To: David Miller, Russell King; +Cc: soni.trilok, netdev, linux-arm-kernel
Dear Russell&David,
Due to having a bit busy, when David has applied this mac patch,
however,I did not fix it based on comments as pointed by Russell.
So, I have to resubmit a new patch relative to previous patch.
patch text:
According to Russell's advice, I fixed up mac driver,
which relatives to previous mac driver patch, and the
evaluation board based on w90p910.
Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
diff --git a/drivers/net/arm/w90p910_ether.c b/drivers/net/arm/w90p910_ether.c
index 7b5f315..890716f 100644
--- a/drivers/net/arm/w90p910_ether.c
+++ b/drivers/net/arm/w90p910_ether.c
@@ -143,16 +143,17 @@ struct recv_pdesc {
struct tran_pdesc {
struct w90p910_txbd desclist[TX_DESC_SIZE];
- char tran_buf[RX_DESC_SIZE][MAX_TBUFF_SZ];
+ char tran_buf[TX_DESC_SIZE][MAX_TBUFF_SZ];
};
struct w90p910_ether {
struct recv_pdesc *rdesc;
- struct recv_pdesc *rdesc_phys;
struct tran_pdesc *tdesc;
- struct tran_pdesc *tdesc_phys;
+ dma_addr_t rdesc_phys;
+ dma_addr_t tdesc_phys;
struct net_device_stats stats;
struct platform_device *pdev;
+ struct resource *res;
struct sk_buff *skb;
struct clk *clk;
struct clk *rmiiclk;
@@ -274,59 +275,75 @@ static void w90p910_write_cam(struct net_device *dev,
__raw_writel(msw, ether->reg + REG_CAMM_BASE + x * CAM_ENTRY_SIZE);
}
-static void w90p910_init_desc(struct net_device *dev)
+static int w90p910_init_desc(struct net_device *dev)
{
struct w90p910_ether *ether;
- struct w90p910_txbd *tdesc, *tdesc_phys;
- struct w90p910_rxbd *rdesc, *rdesc_phys;
- unsigned int i, j;
+ struct w90p910_txbd *tdesc;
+ struct w90p910_rxbd *rdesc;
+ struct platform_device *pdev;
+ unsigned int i;
ether = netdev_priv(dev);
+ pdev = ether->pdev;
ether->tdesc = (struct tran_pdesc *)
- dma_alloc_coherent(NULL, sizeof(struct tran_pdesc),
- (dma_addr_t *)ðer->tdesc_phys, GFP_KERNEL);
+ dma_alloc_coherent(&pdev->dev, sizeof(struct tran_pdesc),
+ ðer->tdesc_phys, GFP_KERNEL);
+
+ if (!ether->tdesc) {
+ dev_err(&pdev->dev, "Failed to allocate memory for tx desc\n");
+ return -ENOMEM;
+ }
ether->rdesc = (struct recv_pdesc *)
- dma_alloc_coherent(NULL, sizeof(struct recv_pdesc),
- (dma_addr_t *)ðer->rdesc_phys, GFP_KERNEL);
+ dma_alloc_coherent(&pdev->dev, sizeof(struct recv_pdesc),
+ ðer->rdesc_phys, GFP_KERNEL);
+
+ if (!ether->rdesc) {
+ dev_err(&pdev->dev, "Failed to allocate memory for rx desc\n");
+ dma_free_coherent(&pdev->dev, sizeof(struct tran_pdesc),
+ ether->tdesc, ether->tdesc_phys);
+ return -ENOMEM;
+ }
for (i = 0; i < TX_DESC_SIZE; i++) {
- tdesc = &(ether->tdesc->desclist[i]);
+ unsigned int offset;
- j = ((i + 1) / TX_DESC_SIZE);
+ tdesc = &(ether->tdesc->desclist[i]);
- if (j != 0) {
- tdesc_phys = &(ether->tdesc_phys->desclist[0]);
- ether->start_tx_ptr = (unsigned int)tdesc_phys;
- tdesc->next = (unsigned int)ether->start_tx_ptr;
- } else {
- tdesc_phys = &(ether->tdesc_phys->desclist[i+1]);
- tdesc->next = (unsigned int)tdesc_phys;
- }
+ if (i == TX_DESC_SIZE - 1)
+ offset = offsetof(struct tran_pdesc, desclist[0]);
+ else
+ offset = offsetof(struct tran_pdesc, desclist[i + 1]);
- tdesc->buffer = (unsigned int)ether->tdesc_phys->tran_buf[i];
+ tdesc->next = ether->tdesc_phys + offset;
+ tdesc->buffer = ether->tdesc_phys +
+ offsetof(struct tran_pdesc, tran_buf[i]);
tdesc->sl = 0;
tdesc->mode = 0;
}
+ ether->start_tx_ptr = ether->tdesc_phys;
+
for (i = 0; i < RX_DESC_SIZE; i++) {
- rdesc = &(ether->rdesc->desclist[i]);
+ unsigned int offset;
- j = ((i + 1) / RX_DESC_SIZE);
+ rdesc = &(ether->rdesc->desclist[i]);
- if (j != 0) {
- rdesc_phys = &(ether->rdesc_phys->desclist[0]);
- ether->start_rx_ptr = (unsigned int)rdesc_phys;
- rdesc->next = (unsigned int)ether->start_rx_ptr;
- } else {
- rdesc_phys = &(ether->rdesc_phys->desclist[i+1]);
- rdesc->next = (unsigned int)rdesc_phys;
- }
+ if (i == RX_DESC_SIZE - 1)
+ offset = offsetof(struct recv_pdesc, desclist[0]);
+ else
+ offset = offsetof(struct recv_pdesc, desclist[i + 1]);
+ rdesc->next = ether->rdesc_phys + offset;
rdesc->sl = RX_OWEN_DMA;
- rdesc->buffer = (unsigned int)ether->rdesc_phys->recv_buf[i];
+ rdesc->buffer = ether->rdesc_phys +
+ offsetof(struct recv_pdesc, recv_buf[i]);
}
+
+ ether->start_rx_ptr = ether->rdesc_phys;
+
+ return 0;
}
static void w90p910_set_fifo_threshold(struct net_device *dev)
@@ -552,11 +569,14 @@ static int w90p910_set_mac_address(struct net_device *dev, void *addr)
static int w90p910_ether_close(struct net_device *dev)
{
struct w90p910_ether *ether = netdev_priv(dev);
+ struct platform_device *pdev;
+
+ pdev = ether->pdev;
- dma_free_writecombine(NULL, sizeof(struct w90p910_rxbd),
- ether->rdesc, (dma_addr_t)ether->rdesc_phys);
- dma_free_writecombine(NULL, sizeof(struct w90p910_txbd),
- ether->tdesc, (dma_addr_t)ether->tdesc_phys);
+ dma_free_coherent(&pdev->dev, sizeof(struct recv_pdesc),
+ ether->rdesc, ether->rdesc_phys);
+ dma_free_coherent(&pdev->dev, sizeof(struct tran_pdesc),
+ ether->tdesc, ether->tdesc_phys);
netif_stop_queue(dev);
@@ -592,6 +612,7 @@ static int w90p910_send_frame(struct net_device *dev,
txbd = ðer->tdesc->desclist[ether->cur_tx];
buffer = ether->tdesc->tran_buf[ether->cur_tx];
+
if (length > 1514) {
dev_err(&pdev->dev, "send data %d bytes, check it\n", length);
length = 1514;
@@ -607,7 +628,9 @@ static int w90p910_send_frame(struct net_device *dev,
w90p910_trigger_tx(dev);
- ether->cur_tx = (ether->cur_tx+1) % TX_DESC_SIZE;
+ if (++ether->cur_tx >= TX_DESC_SIZE)
+ ether->cur_tx = 0;
+
txbd = ðer->tdesc->desclist[ether->cur_tx];
dev->trans_start = jiffies;
@@ -635,7 +658,6 @@ static irqreturn_t w90p910_tx_interrupt(int irq, void *dev_id)
struct w90p910_ether *ether;
struct w90p910_txbd *txbd;
struct platform_device *pdev;
- struct tran_pdesc *tran_pdesc;
struct net_device *dev;
unsigned int cur_entry, entry, status;
@@ -647,13 +669,14 @@ static irqreturn_t w90p910_tx_interrupt(int irq, void *dev_id)
cur_entry = __raw_readl(ether->reg + REG_CTXDSA);
- tran_pdesc = ether->tdesc_phys;
- entry = (unsigned int)(&tran_pdesc->desclist[ether->finish_tx]);
+ entry = ether->tdesc_phys +
+ offsetof(struct tran_pdesc, desclist[ether->finish_tx]);
while (entry != cur_entry) {
txbd = ðer->tdesc->desclist[ether->finish_tx];
- ether->finish_tx = (ether->finish_tx + 1) % TX_DESC_SIZE;
+ if (++ether->finish_tx >= TX_DESC_SIZE)
+ ether->finish_tx = 0;
if (txbd->sl & TXDS_TXCP) {
ether->stats.tx_packets++;
@@ -668,7 +691,8 @@ static irqreturn_t w90p910_tx_interrupt(int irq, void *dev_id)
if (netif_queue_stopped(dev))
netif_wake_queue(dev);
- entry = (unsigned int)(&tran_pdesc->desclist[ether->finish_tx]);
+ entry = ether->tdesc_phys +
+ offsetof(struct tran_pdesc, desclist[ether->finish_tx]);
}
if (status & MISTA_EXDEF) {
@@ -689,20 +713,20 @@ static void netdev_rx(struct net_device *dev)
struct w90p910_ether *ether;
struct w90p910_rxbd *rxbd;
struct platform_device *pdev;
- struct recv_pdesc *rdesc_phys;
struct sk_buff *skb;
unsigned char *data;
unsigned int length, status, val, entry;
ether = netdev_priv(dev);
pdev = ether->pdev;
- rdesc_phys = ether->rdesc_phys;
rxbd = ðer->rdesc->desclist[ether->cur_rx];
do {
val = __raw_readl(ether->reg + REG_CRXDSA);
- entry = (unsigned int)&rdesc_phys->desclist[ether->cur_rx];
+
+ entry = ether->rdesc_phys +
+ offsetof(struct recv_pdesc, desclist[ether->cur_rx]);
if (val == entry)
break;
@@ -747,7 +771,10 @@ static void netdev_rx(struct net_device *dev)
rxbd->sl = RX_OWEN_DMA;
rxbd->reserved = 0x0;
- ether->cur_rx = (ether->cur_rx+1) % RX_DESC_SIZE;
+
+ if (++ether->cur_rx >= RX_DESC_SIZE)
+ ether->cur_rx = 0;
+
rxbd = ðer->rdesc->desclist[ether->cur_rx];
dev->last_rx = jiffies;
@@ -955,30 +982,29 @@ static int __devinit w90p910_ether_probe(struct platform_device *pdev)
{
struct w90p910_ether *ether;
struct net_device *dev;
- struct resource *res;
int error;
dev = alloc_etherdev(sizeof(struct w90p910_ether));
if (!dev)
return -ENOMEM;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (res == NULL) {
+ ether = netdev_priv(dev);
+
+ ether->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (ether->res == NULL) {
dev_err(&pdev->dev, "failed to get I/O memory\n");
error = -ENXIO;
goto failed_free;
}
- res = request_mem_region(res->start, resource_size(res), pdev->name);
- if (res == NULL) {
+ if (!request_mem_region(ether->res->start,
+ resource_size(ether->res), pdev->name)) {
dev_err(&pdev->dev, "failed to request I/O memory\n");
error = -EBUSY;
goto failed_free;
}
- ether = netdev_priv(dev);
-
- ether->reg = ioremap(res->start, resource_size(res));
+ ether->reg = ioremap(ether->res->start, resource_size(ether->res));
if (ether->reg == NULL) {
dev_err(&pdev->dev, "failed to remap I/O memory\n");
error = -ENXIO;
@@ -1039,7 +1065,7 @@ failed_free_txirq:
failed_free_io:
iounmap(ether->reg);
failed_free_mem:
- release_mem_region(res->start, resource_size(res));
+ release_mem_region(ether->res->start, resource_size(ether->res));
failed_free:
free_netdev(dev);
return error;
@@ -1051,12 +1077,19 @@ static int __devexit w90p910_ether_remove(struct platform_device *pdev)
struct w90p910_ether *ether = netdev_priv(dev);
unregister_netdev(dev);
+
clk_put(ether->rmiiclk);
clk_put(ether->clk);
- del_timer_sync(ðer->check_timer);
- platform_set_drvdata(pdev, NULL);
+
+ iounmap(ether->reg);
+ release_mem_region(ether->res->start, resource_size(ether->res));
+
free_irq(ether->txirq, dev);
free_irq(ether->rxirq, dev);
+
+ del_timer_sync(ðer->check_timer);
+ platform_set_drvdata(pdev, NULL);
+
free_netdev(dev);
return 0;
}
--
1.5.6.3
> From: Trilok Soni <soni.trilok@gmail.com>
> Date: Mon, 20 Jul 2009 23:19:38 +0530
>
>> Hi David,
>>
>> On Mon, Jul 20, 2009 at 8:15 PM, David Miller<davem@davemloft.net> wrote:
>>> From: Wan ZongShun <mcuos.com@gmail.com>
>>> Date: Thu, 16 Jul 2009 20:55:05 +0800
>>>
>>>> Add mac driver support for evaluation board based on w90p910.
>>>>
>>>> Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
>>> Applied, thanks.
>> I thought Wan will send us the updated patch with fixing comments as
>> pointed by Russell.
>>
>> Wan, could you please send updated patch.
>
> Send me a relative patch as I've already pushed this driver commit
> publicly and that cannot be undone without a lot of pain.
>
^ permalink raw reply related [flat|nested] 12+ messages in thread
* [PATCH] Add mac driver patch fixed for w90p910
2009-07-23 4:18 ` [PATCH] fixed up the previous " Wan ZongShun
@ 2009-07-23 4:33 ` Wan ZongShun
0 siblings, 0 replies; 12+ messages in thread
From: Wan ZongShun @ 2009-07-23 4:33 UTC (permalink / raw)
To: Wan ZongShun
Cc: David Miller, Russell King, soni.trilok, netdev, linux-arm-kernel
Dear Russell&David,
"[PATCH] fixed up the previous mac driver for w90p910"
Just now sent above patch failed, so resent it.
Due to having a bit busy, when David has applied this mac patch,
however,I did not fix it based on comments as pointed by Russell.
So, I have to resubmit a new patch relative to previous patch.
patch text:
According to Russell's advice, I fixed up mac driver,
which relatives to previous mac driver patch, and the
evaluation board based on w90p910.
Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
diff --git a/drivers/net/arm/w90p910_ether.c b/drivers/net/arm/w90p910_ether.c
index 7b5f315..890716f 100644
--- a/drivers/net/arm/w90p910_ether.c
+++ b/drivers/net/arm/w90p910_ether.c
@@ -143,16 +143,17 @@ struct recv_pdesc {
struct tran_pdesc {
struct w90p910_txbd desclist[TX_DESC_SIZE];
- char tran_buf[RX_DESC_SIZE][MAX_TBUFF_SZ];
+ char tran_buf[TX_DESC_SIZE][MAX_TBUFF_SZ];
};
struct w90p910_ether {
struct recv_pdesc *rdesc;
- struct recv_pdesc *rdesc_phys;
struct tran_pdesc *tdesc;
- struct tran_pdesc *tdesc_phys;
+ dma_addr_t rdesc_phys;
+ dma_addr_t tdesc_phys;
struct net_device_stats stats;
struct platform_device *pdev;
+ struct resource *res;
struct sk_buff *skb;
struct clk *clk;
struct clk *rmiiclk;
@@ -274,59 +275,75 @@ static void w90p910_write_cam(struct net_device *dev,
__raw_writel(msw, ether->reg + REG_CAMM_BASE + x * CAM_ENTRY_SIZE);
}
-static void w90p910_init_desc(struct net_device *dev)
+static int w90p910_init_desc(struct net_device *dev)
{
struct w90p910_ether *ether;
- struct w90p910_txbd *tdesc, *tdesc_phys;
- struct w90p910_rxbd *rdesc, *rdesc_phys;
- unsigned int i, j;
+ struct w90p910_txbd *tdesc;
+ struct w90p910_rxbd *rdesc;
+ struct platform_device *pdev;
+ unsigned int i;
ether = netdev_priv(dev);
+ pdev = ether->pdev;
ether->tdesc = (struct tran_pdesc *)
- dma_alloc_coherent(NULL, sizeof(struct tran_pdesc),
- (dma_addr_t *)ðer->tdesc_phys, GFP_KERNEL);
+ dma_alloc_coherent(&pdev->dev, sizeof(struct tran_pdesc),
+ ðer->tdesc_phys, GFP_KERNEL);
+
+ if (!ether->tdesc) {
+ dev_err(&pdev->dev, "Failed to allocate memory for tx desc\n");
+ return -ENOMEM;
+ }
ether->rdesc = (struct recv_pdesc *)
- dma_alloc_coherent(NULL, sizeof(struct recv_pdesc),
- (dma_addr_t *)ðer->rdesc_phys, GFP_KERNEL);
+ dma_alloc_coherent(&pdev->dev, sizeof(struct recv_pdesc),
+ ðer->rdesc_phys, GFP_KERNEL);
+
+ if (!ether->rdesc) {
+ dev_err(&pdev->dev, "Failed to allocate memory for rx desc\n");
+ dma_free_coherent(&pdev->dev, sizeof(struct tran_pdesc),
+ ether->tdesc, ether->tdesc_phys);
+ return -ENOMEM;
+ }
for (i = 0; i < TX_DESC_SIZE; i++) {
- tdesc = &(ether->tdesc->desclist[i]);
+ unsigned int offset;
- j = ((i + 1) / TX_DESC_SIZE);
+ tdesc = &(ether->tdesc->desclist[i]);
- if (j != 0) {
- tdesc_phys = &(ether->tdesc_phys->desclist[0]);
- ether->start_tx_ptr = (unsigned int)tdesc_phys;
- tdesc->next = (unsigned int)ether->start_tx_ptr;
- } else {
- tdesc_phys = &(ether->tdesc_phys->desclist[i+1]);
- tdesc->next = (unsigned int)tdesc_phys;
- }
+ if (i == TX_DESC_SIZE - 1)
+ offset = offsetof(struct tran_pdesc, desclist[0]);
+ else
+ offset = offsetof(struct tran_pdesc, desclist[i + 1]);
- tdesc->buffer = (unsigned int)ether->tdesc_phys->tran_buf[i];
+ tdesc->next = ether->tdesc_phys + offset;
+ tdesc->buffer = ether->tdesc_phys +
+ offsetof(struct tran_pdesc, tran_buf[i]);
tdesc->sl = 0;
tdesc->mode = 0;
}
+ ether->start_tx_ptr = ether->tdesc_phys;
+
for (i = 0; i < RX_DESC_SIZE; i++) {
- rdesc = &(ether->rdesc->desclist[i]);
+ unsigned int offset;
- j = ((i + 1) / RX_DESC_SIZE);
+ rdesc = &(ether->rdesc->desclist[i]);
- if (j != 0) {
- rdesc_phys = &(ether->rdesc_phys->desclist[0]);
- ether->start_rx_ptr = (unsigned int)rdesc_phys;
- rdesc->next = (unsigned int)ether->start_rx_ptr;
- } else {
- rdesc_phys = &(ether->rdesc_phys->desclist[i+1]);
- rdesc->next = (unsigned int)rdesc_phys;
- }
+ if (i == RX_DESC_SIZE - 1)
+ offset = offsetof(struct recv_pdesc, desclist[0]);
+ else
+ offset = offsetof(struct recv_pdesc, desclist[i + 1]);
+ rdesc->next = ether->rdesc_phys + offset;
rdesc->sl = RX_OWEN_DMA;
- rdesc->buffer = (unsigned int)ether->rdesc_phys->recv_buf[i];
+ rdesc->buffer = ether->rdesc_phys +
+ offsetof(struct recv_pdesc, recv_buf[i]);
}
+
+ ether->start_rx_ptr = ether->rdesc_phys;
+
+ return 0;
}
static void w90p910_set_fifo_threshold(struct net_device *dev)
@@ -552,11 +569,14 @@ static int w90p910_set_mac_address(struct net_device *dev, void *addr)
static int w90p910_ether_close(struct net_device *dev)
{
struct w90p910_ether *ether = netdev_priv(dev);
+ struct platform_device *pdev;
+
+ pdev = ether->pdev;
- dma_free_writecombine(NULL, sizeof(struct w90p910_rxbd),
- ether->rdesc, (dma_addr_t)ether->rdesc_phys);
- dma_free_writecombine(NULL, sizeof(struct w90p910_txbd),
- ether->tdesc, (dma_addr_t)ether->tdesc_phys);
+ dma_free_coherent(&pdev->dev, sizeof(struct recv_pdesc),
+ ether->rdesc, ether->rdesc_phys);
+ dma_free_coherent(&pdev->dev, sizeof(struct tran_pdesc),
+ ether->tdesc, ether->tdesc_phys);
netif_stop_queue(dev);
@@ -592,6 +612,7 @@ static int w90p910_send_frame(struct net_device *dev,
txbd = ðer->tdesc->desclist[ether->cur_tx];
buffer = ether->tdesc->tran_buf[ether->cur_tx];
+
if (length > 1514) {
dev_err(&pdev->dev, "send data %d bytes, check it\n", length);
length = 1514;
@@ -607,7 +628,9 @@ static int w90p910_send_frame(struct net_device *dev,
w90p910_trigger_tx(dev);
- ether->cur_tx = (ether->cur_tx+1) % TX_DESC_SIZE;
+ if (++ether->cur_tx >= TX_DESC_SIZE)
+ ether->cur_tx = 0;
+
txbd = ðer->tdesc->desclist[ether->cur_tx];
dev->trans_start = jiffies;
@@ -635,7 +658,6 @@ static irqreturn_t w90p910_tx_interrupt(int irq, void *dev_id)
struct w90p910_ether *ether;
struct w90p910_txbd *txbd;
struct platform_device *pdev;
- struct tran_pdesc *tran_pdesc;
struct net_device *dev;
unsigned int cur_entry, entry, status;
@@ -647,13 +669,14 @@ static irqreturn_t w90p910_tx_interrupt(int irq, void *dev_id)
cur_entry = __raw_readl(ether->reg + REG_CTXDSA);
- tran_pdesc = ether->tdesc_phys;
- entry = (unsigned int)(&tran_pdesc->desclist[ether->finish_tx]);
+ entry = ether->tdesc_phys +
+ offsetof(struct tran_pdesc, desclist[ether->finish_tx]);
while (entry != cur_entry) {
txbd = ðer->tdesc->desclist[ether->finish_tx];
- ether->finish_tx = (ether->finish_tx + 1) % TX_DESC_SIZE;
+ if (++ether->finish_tx >= TX_DESC_SIZE)
+ ether->finish_tx = 0;
if (txbd->sl & TXDS_TXCP) {
ether->stats.tx_packets++;
@@ -668,7 +691,8 @@ static irqreturn_t w90p910_tx_interrupt(int irq, void *dev_id)
if (netif_queue_stopped(dev))
netif_wake_queue(dev);
- entry = (unsigned int)(&tran_pdesc->desclist[ether->finish_tx]);
+ entry = ether->tdesc_phys +
+ offsetof(struct tran_pdesc, desclist[ether->finish_tx]);
}
if (status & MISTA_EXDEF) {
@@ -689,20 +713,20 @@ static void netdev_rx(struct net_device *dev)
struct w90p910_ether *ether;
struct w90p910_rxbd *rxbd;
struct platform_device *pdev;
- struct recv_pdesc *rdesc_phys;
struct sk_buff *skb;
unsigned char *data;
unsigned int length, status, val, entry;
ether = netdev_priv(dev);
pdev = ether->pdev;
- rdesc_phys = ether->rdesc_phys;
rxbd = ðer->rdesc->desclist[ether->cur_rx];
do {
val = __raw_readl(ether->reg + REG_CRXDSA);
- entry = (unsigned int)&rdesc_phys->desclist[ether->cur_rx];
+
+ entry = ether->rdesc_phys +
+ offsetof(struct recv_pdesc, desclist[ether->cur_rx]);
if (val == entry)
break;
@@ -747,7 +771,10 @@ static void netdev_rx(struct net_device *dev)
rxbd->sl = RX_OWEN_DMA;
rxbd->reserved = 0x0;
- ether->cur_rx = (ether->cur_rx+1) % RX_DESC_SIZE;
+
+ if (++ether->cur_rx >= RX_DESC_SIZE)
+ ether->cur_rx = 0;
+
rxbd = ðer->rdesc->desclist[ether->cur_rx];
dev->last_rx = jiffies;
@@ -955,30 +982,29 @@ static int __devinit w90p910_ether_probe(struct platform_device *pdev)
{
struct w90p910_ether *ether;
struct net_device *dev;
- struct resource *res;
int error;
dev = alloc_etherdev(sizeof(struct w90p910_ether));
if (!dev)
return -ENOMEM;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (res == NULL) {
+ ether = netdev_priv(dev);
+
+ ether->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (ether->res == NULL) {
dev_err(&pdev->dev, "failed to get I/O memory\n");
error = -ENXIO;
goto failed_free;
}
- res = request_mem_region(res->start, resource_size(res), pdev->name);
- if (res == NULL) {
+ if (!request_mem_region(ether->res->start,
+ resource_size(ether->res), pdev->name)) {
dev_err(&pdev->dev, "failed to request I/O memory\n");
error = -EBUSY;
goto failed_free;
}
- ether = netdev_priv(dev);
-
- ether->reg = ioremap(res->start, resource_size(res));
+ ether->reg = ioremap(ether->res->start, resource_size(ether->res));
if (ether->reg == NULL) {
dev_err(&pdev->dev, "failed to remap I/O memory\n");
error = -ENXIO;
@@ -1039,7 +1065,7 @@ failed_free_txirq:
failed_free_io:
iounmap(ether->reg);
failed_free_mem:
- release_mem_region(res->start, resource_size(res));
+ release_mem_region(ether->res->start, resource_size(ether->res));
failed_free:
free_netdev(dev);
return error;
@@ -1051,12 +1077,19 @@ static int __devexit w90p910_ether_remove(struct platform_device *pdev)
struct w90p910_ether *ether = netdev_priv(dev);
unregister_netdev(dev);
+
clk_put(ether->rmiiclk);
clk_put(ether->clk);
- del_timer_sync(ðer->check_timer);
- platform_set_drvdata(pdev, NULL);
+
+ iounmap(ether->reg);
+ release_mem_region(ether->res->start, resource_size(ether->res));
+
free_irq(ether->txirq, dev);
free_irq(ether->rxirq, dev);
+
+ del_timer_sync(ðer->check_timer);
+ platform_set_drvdata(pdev, NULL);
+
free_netdev(dev);
return 0;
}
--
1.5.6.3
^ permalink raw reply related [flat|nested] 12+ messages in thread
* Re: [PATCH] Add mac driver for w90p910
2009-07-20 17:52 ` David Miller
2009-07-21 3:40 ` Wan ZongShun
2009-07-23 4:18 ` [PATCH] fixed up the previous " Wan ZongShun
@ 2009-07-23 4:52 ` Wan ZongShun
2009-07-27 18:24 ` David Miller
2 siblings, 1 reply; 12+ messages in thread
From: Wan ZongShun @ 2009-07-23 4:52 UTC (permalink / raw)
To: David Miller, Russell King
Cc: soni.trilok, netdev, linux-arm-kernel, eric.y.miao
Dear sirs,
I have to sent this patch third times and really didn't know why previous two mails
were held by arm-linux-kernel. but it look like sending linux-netdev is successful,
For any inconvenience caused, please forgive.
I fixed up previous mac driver and make a patch relative to it.
thanks for your help.
According to Russell's advice, I fixed up mac driver,
which relatives to previous mac driver patch, and the
evaluation board based on w90p910.
Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
diff --git a/drivers/net/arm/w90p910_ether.c b/drivers/net/arm/w90p910_ether.c
index 7b5f315..890716f 100644
--- a/drivers/net/arm/w90p910_ether.c
+++ b/drivers/net/arm/w90p910_ether.c
@@ -143,16 +143,17 @@ struct recv_pdesc {
struct tran_pdesc {
struct w90p910_txbd desclist[TX_DESC_SIZE];
- char tran_buf[RX_DESC_SIZE][MAX_TBUFF_SZ];
+ char tran_buf[TX_DESC_SIZE][MAX_TBUFF_SZ];
};
struct w90p910_ether {
struct recv_pdesc *rdesc;
- struct recv_pdesc *rdesc_phys;
struct tran_pdesc *tdesc;
- struct tran_pdesc *tdesc_phys;
+ dma_addr_t rdesc_phys;
+ dma_addr_t tdesc_phys;
struct net_device_stats stats;
struct platform_device *pdev;
+ struct resource *res;
struct sk_buff *skb;
struct clk *clk;
struct clk *rmiiclk;
@@ -274,59 +275,75 @@ static void w90p910_write_cam(struct net_device *dev,
__raw_writel(msw, ether->reg + REG_CAMM_BASE + x * CAM_ENTRY_SIZE);
}
-static void w90p910_init_desc(struct net_device *dev)
+static int w90p910_init_desc(struct net_device *dev)
{
struct w90p910_ether *ether;
- struct w90p910_txbd *tdesc, *tdesc_phys;
- struct w90p910_rxbd *rdesc, *rdesc_phys;
- unsigned int i, j;
+ struct w90p910_txbd *tdesc;
+ struct w90p910_rxbd *rdesc;
+ struct platform_device *pdev;
+ unsigned int i;
ether = netdev_priv(dev);
+ pdev = ether->pdev;
ether->tdesc = (struct tran_pdesc *)
- dma_alloc_coherent(NULL, sizeof(struct tran_pdesc),
- (dma_addr_t *)ðer->tdesc_phys, GFP_KERNEL);
+ dma_alloc_coherent(&pdev->dev, sizeof(struct tran_pdesc),
+ ðer->tdesc_phys, GFP_KERNEL);
+
+ if (!ether->tdesc) {
+ dev_err(&pdev->dev, "Failed to allocate memory for tx desc\n");
+ return -ENOMEM;
+ }
ether->rdesc = (struct recv_pdesc *)
- dma_alloc_coherent(NULL, sizeof(struct recv_pdesc),
- (dma_addr_t *)ðer->rdesc_phys, GFP_KERNEL);
+ dma_alloc_coherent(&pdev->dev, sizeof(struct recv_pdesc),
+ ðer->rdesc_phys, GFP_KERNEL);
+
+ if (!ether->rdesc) {
+ dev_err(&pdev->dev, "Failed to allocate memory for rx desc\n");
+ dma_free_coherent(&pdev->dev, sizeof(struct tran_pdesc),
+ ether->tdesc, ether->tdesc_phys);
+ return -ENOMEM;
+ }
for (i = 0; i < TX_DESC_SIZE; i++) {
- tdesc = &(ether->tdesc->desclist[i]);
+ unsigned int offset;
- j = ((i + 1) / TX_DESC_SIZE);
+ tdesc = &(ether->tdesc->desclist[i]);
- if (j != 0) {
- tdesc_phys = &(ether->tdesc_phys->desclist[0]);
- ether->start_tx_ptr = (unsigned int)tdesc_phys;
- tdesc->next = (unsigned int)ether->start_tx_ptr;
- } else {
- tdesc_phys = &(ether->tdesc_phys->desclist[i+1]);
- tdesc->next = (unsigned int)tdesc_phys;
- }
+ if (i == TX_DESC_SIZE - 1)
+ offset = offsetof(struct tran_pdesc, desclist[0]);
+ else
+ offset = offsetof(struct tran_pdesc, desclist[i + 1]);
- tdesc->buffer = (unsigned int)ether->tdesc_phys->tran_buf[i];
+ tdesc->next = ether->tdesc_phys + offset;
+ tdesc->buffer = ether->tdesc_phys +
+ offsetof(struct tran_pdesc, tran_buf[i]);
tdesc->sl = 0;
tdesc->mode = 0;
}
+ ether->start_tx_ptr = ether->tdesc_phys;
+
for (i = 0; i < RX_DESC_SIZE; i++) {
- rdesc = &(ether->rdesc->desclist[i]);
+ unsigned int offset;
- j = ((i + 1) / RX_DESC_SIZE);
+ rdesc = &(ether->rdesc->desclist[i]);
- if (j != 0) {
- rdesc_phys = &(ether->rdesc_phys->desclist[0]);
- ether->start_rx_ptr = (unsigned int)rdesc_phys;
- rdesc->next = (unsigned int)ether->start_rx_ptr;
- } else {
- rdesc_phys = &(ether->rdesc_phys->desclist[i+1]);
- rdesc->next = (unsigned int)rdesc_phys;
- }
+ if (i == RX_DESC_SIZE - 1)
+ offset = offsetof(struct recv_pdesc, desclist[0]);
+ else
+ offset = offsetof(struct recv_pdesc, desclist[i + 1]);
+ rdesc->next = ether->rdesc_phys + offset;
rdesc->sl = RX_OWEN_DMA;
- rdesc->buffer = (unsigned int)ether->rdesc_phys->recv_buf[i];
+ rdesc->buffer = ether->rdesc_phys +
+ offsetof(struct recv_pdesc, recv_buf[i]);
}
+
+ ether->start_rx_ptr = ether->rdesc_phys;
+
+ return 0;
}
static void w90p910_set_fifo_threshold(struct net_device *dev)
@@ -552,11 +569,14 @@ static int w90p910_set_mac_address(struct net_device *dev, void *addr)
static int w90p910_ether_close(struct net_device *dev)
{
struct w90p910_ether *ether = netdev_priv(dev);
+ struct platform_device *pdev;
+
+ pdev = ether->pdev;
- dma_free_writecombine(NULL, sizeof(struct w90p910_rxbd),
- ether->rdesc, (dma_addr_t)ether->rdesc_phys);
- dma_free_writecombine(NULL, sizeof(struct w90p910_txbd),
- ether->tdesc, (dma_addr_t)ether->tdesc_phys);
+ dma_free_coherent(&pdev->dev, sizeof(struct recv_pdesc),
+ ether->rdesc, ether->rdesc_phys);
+ dma_free_coherent(&pdev->dev, sizeof(struct tran_pdesc),
+ ether->tdesc, ether->tdesc_phys);
netif_stop_queue(dev);
@@ -592,6 +612,7 @@ static int w90p910_send_frame(struct net_device *dev,
txbd = ðer->tdesc->desclist[ether->cur_tx];
buffer = ether->tdesc->tran_buf[ether->cur_tx];
+
if (length > 1514) {
dev_err(&pdev->dev, "send data %d bytes, check it\n", length);
length = 1514;
@@ -607,7 +628,9 @@ static int w90p910_send_frame(struct net_device *dev,
w90p910_trigger_tx(dev);
- ether->cur_tx = (ether->cur_tx+1) % TX_DESC_SIZE;
+ if (++ether->cur_tx >= TX_DESC_SIZE)
+ ether->cur_tx = 0;
+
txbd = ðer->tdesc->desclist[ether->cur_tx];
dev->trans_start = jiffies;
@@ -635,7 +658,6 @@ static irqreturn_t w90p910_tx_interrupt(int irq, void *dev_id)
struct w90p910_ether *ether;
struct w90p910_txbd *txbd;
struct platform_device *pdev;
- struct tran_pdesc *tran_pdesc;
struct net_device *dev;
unsigned int cur_entry, entry, status;
@@ -647,13 +669,14 @@ static irqreturn_t w90p910_tx_interrupt(int irq, void *dev_id)
cur_entry = __raw_readl(ether->reg + REG_CTXDSA);
- tran_pdesc = ether->tdesc_phys;
- entry = (unsigned int)(&tran_pdesc->desclist[ether->finish_tx]);
+ entry = ether->tdesc_phys +
+ offsetof(struct tran_pdesc, desclist[ether->finish_tx]);
while (entry != cur_entry) {
txbd = ðer->tdesc->desclist[ether->finish_tx];
- ether->finish_tx = (ether->finish_tx + 1) % TX_DESC_SIZE;
+ if (++ether->finish_tx >= TX_DESC_SIZE)
+ ether->finish_tx = 0;
if (txbd->sl & TXDS_TXCP) {
ether->stats.tx_packets++;
@@ -668,7 +691,8 @@ static irqreturn_t w90p910_tx_interrupt(int irq, void *dev_id)
if (netif_queue_stopped(dev))
netif_wake_queue(dev);
- entry = (unsigned int)(&tran_pdesc->desclist[ether->finish_tx]);
+ entry = ether->tdesc_phys +
+ offsetof(struct tran_pdesc, desclist[ether->finish_tx]);
}
if (status & MISTA_EXDEF) {
@@ -689,20 +713,20 @@ static void netdev_rx(struct net_device *dev)
struct w90p910_ether *ether;
struct w90p910_rxbd *rxbd;
struct platform_device *pdev;
- struct recv_pdesc *rdesc_phys;
struct sk_buff *skb;
unsigned char *data;
unsigned int length, status, val, entry;
ether = netdev_priv(dev);
pdev = ether->pdev;
- rdesc_phys = ether->rdesc_phys;
rxbd = ðer->rdesc->desclist[ether->cur_rx];
do {
val = __raw_readl(ether->reg + REG_CRXDSA);
- entry = (unsigned int)&rdesc_phys->desclist[ether->cur_rx];
+
+ entry = ether->rdesc_phys +
+ offsetof(struct recv_pdesc, desclist[ether->cur_rx]);
if (val == entry)
break;
@@ -747,7 +771,10 @@ static void netdev_rx(struct net_device *dev)
rxbd->sl = RX_OWEN_DMA;
rxbd->reserved = 0x0;
- ether->cur_rx = (ether->cur_rx+1) % RX_DESC_SIZE;
+
+ if (++ether->cur_rx >= RX_DESC_SIZE)
+ ether->cur_rx = 0;
+
rxbd = ðer->rdesc->desclist[ether->cur_rx];
dev->last_rx = jiffies;
@@ -955,30 +982,29 @@ static int __devinit w90p910_ether_probe(struct platform_device *pdev)
{
struct w90p910_ether *ether;
struct net_device *dev;
- struct resource *res;
int error;
dev = alloc_etherdev(sizeof(struct w90p910_ether));
if (!dev)
return -ENOMEM;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (res == NULL) {
+ ether = netdev_priv(dev);
+
+ ether->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (ether->res == NULL) {
dev_err(&pdev->dev, "failed to get I/O memory\n");
error = -ENXIO;
goto failed_free;
}
- res = request_mem_region(res->start, resource_size(res), pdev->name);
- if (res == NULL) {
+ if (!request_mem_region(ether->res->start,
+ resource_size(ether->res), pdev->name)) {
dev_err(&pdev->dev, "failed to request I/O memory\n");
error = -EBUSY;
goto failed_free;
}
- ether = netdev_priv(dev);
-
- ether->reg = ioremap(res->start, resource_size(res));
+ ether->reg = ioremap(ether->res->start, resource_size(ether->res));
if (ether->reg == NULL) {
dev_err(&pdev->dev, "failed to remap I/O memory\n");
error = -ENXIO;
@@ -1039,7 +1065,7 @@ failed_free_txirq:
failed_free_io:
iounmap(ether->reg);
failed_free_mem:
- release_mem_region(res->start, resource_size(res));
+ release_mem_region(ether->res->start, resource_size(ether->res));
failed_free:
free_netdev(dev);
return error;
@@ -1051,12 +1077,19 @@ static int __devexit w90p910_ether_remove(struct platform_device *pdev)
struct w90p910_ether *ether = netdev_priv(dev);
unregister_netdev(dev);
+
clk_put(ether->rmiiclk);
clk_put(ether->clk);
- del_timer_sync(ðer->check_timer);
- platform_set_drvdata(pdev, NULL);
+
+ iounmap(ether->reg);
+ release_mem_region(ether->res->start, resource_size(ether->res));
+
free_irq(ether->txirq, dev);
free_irq(ether->rxirq, dev);
+
+ del_timer_sync(ðer->check_timer);
+ platform_set_drvdata(pdev, NULL);
+
free_netdev(dev);
return 0;
}
--
1.5.6.3
^ permalink raw reply related [flat|nested] 12+ messages in thread
* Re: [PATCH] Add mac driver for w90p910
2009-07-23 4:52 ` [PATCH] Add mac driver " Wan ZongShun
@ 2009-07-27 18:24 ` David Miller
0 siblings, 0 replies; 12+ messages in thread
From: David Miller @ 2009-07-27 18:24 UTC (permalink / raw)
To: mcuos.com; +Cc: linux, soni.trilok, netdev, linux-arm-kernel, eric.y.miao
From: Wan ZongShun <mcuos.com@gmail.com>
Date: Thu, 23 Jul 2009 12:52:24 +0800
> I fixed up previous mac driver and make a patch relative to it.
This patch does not apply to the code actually in the tree,
for example:
> ether->tdesc = (struct tran_pdesc *)
> - dma_alloc_coherent(NULL, sizeof(struct tran_pdesc),
> - (dma_addr_t *)ðer->tdesc_phys, GFP_KERNEL);
> + dma_alloc_coherent(&pdev->dev, sizeof(struct tran_pdesc),
> + ðer->tdesc_phys, GFP_KERNEL);
> +
in the tree there is a space between '(dma_addr_t *)' and
'ðer->tdesc_phys', but the code you are patching against
does not have that space.
Please do two things:
1) Generate your patch properly against the code actually in
the tree.
2) Create a coherent, verbose, commit message and proper subject
line which describes one-by-one the bug fixes you are making
to the driver.
Thanks.
^ permalink raw reply [flat|nested] 12+ messages in thread
end of thread, other threads:[~2009-07-27 18:24 UTC | newest]
Thread overview: 12+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2009-07-16 12:55 [PATCH] Add mac driver for w90p910 Wan ZongShun
2009-07-16 17:42 ` Trilok Soni
2009-07-17 11:21 ` Wan ZongShun
2009-07-19 10:16 ` Russell King - ARM Linux
2009-07-20 14:45 ` David Miller
2009-07-20 17:49 ` Trilok Soni
2009-07-20 17:52 ` David Miller
2009-07-21 3:40 ` Wan ZongShun
2009-07-23 4:18 ` [PATCH] fixed up the previous " Wan ZongShun
2009-07-23 4:33 ` [PATCH] Add mac driver patch fixed " Wan ZongShun
2009-07-23 4:52 ` [PATCH] Add mac driver " Wan ZongShun
2009-07-27 18:24 ` David Miller
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