AX88796 network driver

Support for the Asix AX88796 network controller, an
NE2000 compatible 10/100 ethernet device with internal
PHY.

The driver supports PHY settings via either ioctl() or
the ethtool driver ops.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Ben Dooks 2007-07-03 16:53:09 +01:00 committed by Jeff Garzik
parent f49343a548
commit 825a2ff189
5 changed files with 999 additions and 0 deletions

View file

@ -73,6 +73,9 @@ struct ei_device {
u32 *reg_offset; /* Register mapping table */
spinlock_t page_lock; /* Page register locks */
unsigned long priv; /* Private field to store bus IDs etc. */
#ifdef AX88796_PLATFORM
unsigned char rxcr_base; /* default value for RXCR */
#endif
};
/* The maximum number of 8390 interrupt service routines called per IRQ. */
@ -86,11 +89,19 @@ struct ei_device {
/* Some generic ethernet register configurations. */
#define E8390_TX_IRQ_MASK 0xa /* For register EN0_ISR */
#define E8390_RX_IRQ_MASK 0x5
#ifdef AX88796_PLATFORM
#define E8390_RXCONFIG (ei_status.rxcr_base | 0x04)
#define E8390_RXOFF (ei_status.rxcr_base | 0x20)
#else
#define E8390_RXCONFIG 0x4 /* EN0_RXCR: broadcasts, no multicast,errors */
#define E8390_RXOFF 0x20 /* EN0_RXCR: Accept no packets */
#endif
#define E8390_TXCONFIG 0x00 /* EN0_TXCR: Normal transmit mode */
#define E8390_TXOFF 0x02 /* EN0_TXCR: Transmitter off */
/* Register accessed at EN_CMD, the 8390 base addr. */
#define E8390_STOP 0x01 /* Stop and reset the chip */
#define E8390_START 0x02 /* Start the chip, clear reset */

View file

@ -197,6 +197,14 @@ config MACB
source "drivers/net/arm/Kconfig"
config AX88796
tristate "ASIX AX88796 NE2000 clone support"
select CRC32
select MII
help
AX88796 driver, using platform bus to provide
chip detection and resources
config MACE
tristate "MACE (Power Mac ethernet) support"
depends on PPC_PMAC && PPC32

View file

@ -107,6 +107,7 @@ obj-$(CONFIG_NET_SB1250_MAC) += sb1250-mac.o
obj-$(CONFIG_B44) += b44.o
obj-$(CONFIG_FORCEDETH) += forcedeth.o
obj-$(CONFIG_NE_H8300) += ne-h8300.o
obj-$(CONFIG_AX88796) += ax88796.o
obj-$(CONFIG_TSI108_ETH) += tsi108_eth.o
obj-$(CONFIG_MV643XX_ETH) += mv643xx_eth.o

952
drivers/net/ax88796.c Normal file
View file

@ -0,0 +1,952 @@
/* drivers/net/ax88796.c
*
* Copyright 2005,2007 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
*
* Asix AX88796 10/100 Ethernet controller support
* Based on ne.c, by Donald Becker, et-al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/isapnp.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/mii.h>
#include <net/ax88796.h>
#include <asm/system.h>
#include <asm/io.h>
static int phy_debug = 0;
/* Rename the lib8390.c functions to show that they are in this driver */
#define __ei_open ax_ei_open
#define __ei_close ax_ei_close
#define __ei_poll ax_ei_poll
#define __ei_tx_timeout ax_ei_tx_timeout
#define __ei_interrupt ax_ei_interrupt
#define ____alloc_ei_netdev ax__alloc_ei_netdev
#define __NS8390_init ax_NS8390_init
/* force unsigned long back to 'void __iomem *' */
#define ax_convert_addr(_a) ((void __force __iomem *)(_a))
#define ei_inb(_a) readb(ax_convert_addr(_a))
#define ei_outb(_v, _a) writeb(_v, ax_convert_addr(_a))
#define ei_inb_p(_a) ei_inb(_a)
#define ei_outb_p(_v, _a) ei_outb(_v, _a)
/* define EI_SHIFT() to take into account our register offsets */
#define EI_SHIFT(x) (ei_local->reg_offset[(x)])
/* Ensure we have our RCR base value */
#define AX88796_PLATFORM
static unsigned char version[] = "ax88796.c: Copyright 2005,2007 Simtec Electronics\n";
#include "lib8390.c"
#define DRV_NAME "ax88796"
#define DRV_VERSION "1.00"
/* from ne.c */
#define NE_CMD EI_SHIFT(0x00)
#define NE_RESET EI_SHIFT(0x1f)
#define NE_DATAPORT EI_SHIFT(0x10)
#define NE1SM_START_PG 0x20 /* First page of TX buffer */
#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
#define NESM_START_PG 0x40 /* First page of TX buffer */
#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
/* device private data */
struct ax_device {
struct timer_list mii_timer;
spinlock_t mii_lock;
struct mii_if_info mii;
u32 msg_enable;
void __iomem *map2;
struct platform_device *dev;
struct resource *mem;
struct resource *mem2;
struct ax_plat_data *plat;
unsigned char running;
unsigned char resume_open;
u32 reg_offsets[0x20];
};
static inline struct ax_device *to_ax_dev(struct net_device *dev)
{
struct ei_device *ei_local = netdev_priv(dev);
return (struct ax_device *)(ei_local+1);
}
/* ax_initial_check
*
* do an initial probe for the card to check wether it exists
* and is functional
*/
static int ax_initial_check(struct net_device *dev)
{
struct ei_device *ei_local = netdev_priv(dev);
void __iomem *ioaddr = ei_local->mem;
int reg0;
int regd;
reg0 = ei_inb(ioaddr);
if (reg0 == 0xFF)
return -ENODEV;
ei_outb(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
regd = ei_inb(ioaddr + 0x0d);
ei_outb(0xff, ioaddr + 0x0d);
ei_outb(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
ei_inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
if (ei_inb(ioaddr + EN0_COUNTER0) != 0) {
ei_outb(reg0, ioaddr);
ei_outb(regd, ioaddr + 0x0d); /* Restore the old values. */
return -ENODEV;
}
return 0;
}
/* Hard reset the card. This used to pause for the same period that a
8390 reset command required, but that shouldn't be necessary. */
static void ax_reset_8390(struct net_device *dev)
{
struct ei_device *ei_local = netdev_priv(dev);
unsigned long reset_start_time = jiffies;
void __iomem *addr = (void __iomem *)dev->base_addr;
if (ei_debug > 1)
printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies);
ei_outb(ei_inb(addr + NE_RESET), addr + NE_RESET);
ei_status.txing = 0;
ei_status.dmaing = 0;
/* This check _should_not_ be necessary, omit eventually. */
while ((ei_inb(addr + EN0_ISR) & ENISR_RESET) == 0) {
if (jiffies - reset_start_time > 2*HZ/100) {
printk(KERN_WARNING "%s: %s did not complete.\n",
__FUNCTION__, dev->name);
break;
}
}
ei_outb(ENISR_RESET, addr + EN0_ISR); /* Ack intr. */
}
static void ax_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
int ring_page)
{
struct ei_device *ei_local = netdev_priv(dev);
void __iomem *nic_base = ei_local->mem;
/* This *shouldn't* happen. If it does, it's the last thing you'll see */
if (ei_status.dmaing) {
printk(KERN_EMERG "%s: DMAing conflict in %s [DMAstat:%d][irqlock:%d].\n",
dev->name, __FUNCTION__,
ei_status.dmaing, ei_status.irqlock);
return;
}
ei_status.dmaing |= 0x01;
ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
ei_outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
ei_outb(0, nic_base + EN0_RCNTHI);
ei_outb(0, nic_base + EN0_RSARLO); /* On page boundary */
ei_outb(ring_page, nic_base + EN0_RSARHI);
ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
if (ei_status.word16)
readsw(nic_base + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
else
readsb(nic_base + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
ei_status.dmaing &= ~0x01;
le16_to_cpus(&hdr->count);
}
/* Block input and output, similar to the Crynwr packet driver. If you
are porting to a new ethercard, look at the packet driver source for hints.
The NEx000 doesn't share the on-board packet memory -- you have to put
the packet out through the "remote DMA" dataport using ei_outb. */
static void ax_block_input(struct net_device *dev, int count,
struct sk_buff *skb, int ring_offset)
{
struct ei_device *ei_local = netdev_priv(dev);
void __iomem *nic_base = ei_local->mem;
char *buf = skb->data;
if (ei_status.dmaing) {
printk(KERN_EMERG "%s: DMAing conflict in ax_block_input "
"[DMAstat:%d][irqlock:%d].\n",
dev->name, ei_status.dmaing, ei_status.irqlock);
return;
}
ei_status.dmaing |= 0x01;
ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
ei_outb(count & 0xff, nic_base + EN0_RCNTLO);
ei_outb(count >> 8, nic_base + EN0_RCNTHI);
ei_outb(ring_offset & 0xff, nic_base + EN0_RSARLO);
ei_outb(ring_offset >> 8, nic_base + EN0_RSARHI);
ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
if (ei_status.word16) {
readsw(nic_base + NE_DATAPORT, buf, count >> 1);
if (count & 0x01)
buf[count-1] = ei_inb(nic_base + NE_DATAPORT);
} else {
readsb(nic_base + NE_DATAPORT, buf, count);
}
ei_status.dmaing &= ~1;
}
static void ax_block_output(struct net_device *dev, int count,
const unsigned char *buf, const int start_page)
{
struct ei_device *ei_local = netdev_priv(dev);
void __iomem *nic_base = ei_local->mem;
unsigned long dma_start;
/* Round the count up for word writes. Do we need to do this?
What effect will an odd byte count have on the 8390?
I should check someday. */
if (ei_status.word16 && (count & 0x01))
count++;
/* This *shouldn't* happen. If it does, it's the last thing you'll see */
if (ei_status.dmaing) {
printk(KERN_EMERG "%s: DMAing conflict in %s."
"[DMAstat:%d][irqlock:%d]\n",
dev->name, __FUNCTION__,
ei_status.dmaing, ei_status.irqlock);
return;
}
ei_status.dmaing |= 0x01;
/* We should already be in page 0, but to be safe... */
ei_outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
ei_outb(ENISR_RDC, nic_base + EN0_ISR);
/* Now the normal output. */
ei_outb(count & 0xff, nic_base + EN0_RCNTLO);
ei_outb(count >> 8, nic_base + EN0_RCNTHI);
ei_outb(0x00, nic_base + EN0_RSARLO);
ei_outb(start_page, nic_base + EN0_RSARHI);
ei_outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
if (ei_status.word16) {
writesw(nic_base + NE_DATAPORT, buf, count>>1);
} else {
writesb(nic_base + NE_DATAPORT, buf, count);
}
dma_start = jiffies;
while ((ei_inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) {
if (jiffies - dma_start > 2*HZ/100) { /* 20ms */
printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
ax_reset_8390(dev);
ax_NS8390_init(dev,1);
break;
}
}
ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
ei_status.dmaing &= ~0x01;
return;
}
/* definitions for accessing MII/EEPROM interface */
#define AX_MEMR EI_SHIFT(0x14)
#define AX_MEMR_MDC (1<<0)
#define AX_MEMR_MDIR (1<<1)
#define AX_MEMR_MDI (1<<2)
#define AX_MEMR_MDO (1<<3)
#define AX_MEMR_EECS (1<<4)
#define AX_MEMR_EEI (1<<5)
#define AX_MEMR_EEO (1<<6)
#define AX_MEMR_EECLK (1<<7)
/* ax_mii_ei_outbits
*
* write the specified set of bits to the phy
*/
static void
ax_mii_ei_outbits(struct net_device *dev, unsigned int bits, int len)
{
struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
void __iomem *memr_addr = (void __iomem *)dev->base_addr + AX_MEMR;
unsigned int memr;
/* clock low, data to output mode */
memr = ei_inb(memr_addr);
memr &= ~(AX_MEMR_MDC | AX_MEMR_MDIR);
ei_outb(memr, memr_addr);
for (len--; len >= 0; len--) {
if (bits & (1 << len))
memr |= AX_MEMR_MDO;
else
memr &= ~AX_MEMR_MDO;
ei_outb(memr, memr_addr);
/* clock high */
ei_outb(memr | AX_MEMR_MDC, memr_addr);
udelay(1);
/* clock low */
ei_outb(memr, memr_addr);
}
/* leaves the clock line low, mdir input */
memr |= AX_MEMR_MDIR;
ei_outb(memr, (void __iomem *)dev->base_addr + AX_MEMR);
}
/* ax_phy_ei_inbits
*
* read a specified number of bits from the phy
*/
static unsigned int
ax_phy_ei_inbits(struct net_device *dev, int no)
{
struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
void __iomem *memr_addr = (void __iomem *)dev->base_addr + AX_MEMR;
unsigned int memr;
unsigned int result = 0;
/* clock low, data to input mode */
memr = ei_inb(memr_addr);
memr &= ~AX_MEMR_MDC;
memr |= AX_MEMR_MDIR;
ei_outb(memr, memr_addr);
for (no--; no >= 0; no--) {
ei_outb(memr | AX_MEMR_MDC, memr_addr);
udelay(1);
if (ei_inb(memr_addr) & AX_MEMR_MDI)
result |= (1<<no);
ei_outb(memr, memr_addr);
}
return result;
}
/* ax_phy_issueaddr
*
* use the low level bit shifting routines to send the address
* and command to the specified phy
*/
static void
ax_phy_issueaddr(struct net_device *dev, int phy_addr, int reg, int opc)
{
if (phy_debug)
pr_debug("%s: dev %p, %04x, %04x, %d\n",
__FUNCTION__, dev, phy_addr, reg, opc);
ax_mii_ei_outbits(dev, 0x3f, 6); /* pre-amble */
ax_mii_ei_outbits(dev, 1, 2); /* frame-start */
ax_mii_ei_outbits(dev, opc, 2); /* op code */
ax_mii_ei_outbits(dev, phy_addr, 5); /* phy address */
ax_mii_ei_outbits(dev, reg, 5); /* reg address */
}
static int
ax_phy_read(struct net_device *dev, int phy_addr, int reg)
{
struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
unsigned long flags;
unsigned int result;
spin_lock_irqsave(&ei_local->page_lock, flags);
ax_phy_issueaddr(dev, phy_addr, reg, 2);
result = ax_phy_ei_inbits(dev, 17);
result &= ~(3<<16);
spin_unlock_irqrestore(&ei_local->page_lock, flags);
if (phy_debug)
pr_debug("%s: %04x.%04x => read %04x\n", __FUNCTION__,
phy_addr, reg, result);
return result;
}
static void
ax_phy_write(struct net_device *dev, int phy_addr, int reg, int value)
{
struct ei_device *ei = (struct ei_device *) netdev_priv(dev);
unsigned long flags;
printk(KERN_DEBUG "%s: %p, %04x, %04x %04x\n",
__FUNCTION__, dev, phy_addr, reg, value);
spin_lock_irqsave(&ei->page_lock, flags);
ax_phy_issueaddr(dev, phy_addr, reg, 1);
ax_mii_ei_outbits(dev, 2, 2); /* send TA */
ax_mii_ei_outbits(dev, value, 16);
spin_unlock_irqrestore(&ei->page_lock, flags);
}
static void ax_mii_expiry(unsigned long data)
{
struct net_device *dev = (struct net_device *)data;
struct ax_device *ax = to_ax_dev(dev);
unsigned long flags;
spin_lock_irqsave(&ax->mii_lock, flags);
mii_check_media(&ax->mii, netif_msg_link(ax), 0);
spin_unlock_irqrestore(&ax->mii_lock, flags);
if (ax->running) {
ax->mii_timer.expires = jiffies + HZ*2;
add_timer(&ax->mii_timer);
}
}
static int ax_open(struct net_device *dev)
{
struct ax_device *ax = to_ax_dev(dev);
struct ei_device *ei_local = netdev_priv(dev);
int ret;
dev_dbg(ax->dev, "%s: open\n", dev->name);
ret = request_irq(dev->irq, ax_ei_interrupt, 0, dev->name, dev);
if (ret)
return ret;
ret = ax_ei_open(dev);
if (ret)
return ret;
/* turn the phy on (if turned off) */
ei_outb(ax->plat->gpoc_val, ei_local->mem + EI_SHIFT(0x17));
ax->running = 1;
/* start the MII timer */
init_timer(&ax->mii_timer);
ax->mii_timer.expires = jiffies+1;
ax->mii_timer.data = (unsigned long) dev;
ax->mii_timer.function = ax_mii_expiry;
add_timer(&ax->mii_timer);
return 0;
}
static int ax_close(struct net_device *dev)
{
struct ax_device *ax = to_ax_dev(dev);
struct ei_device *ei_local = netdev_priv(dev);
dev_dbg(ax->dev, "%s: close\n", dev->name);
/* turn the phy off */
ei_outb(ax->plat->gpoc_val | (1<<6),
ei_local->mem + EI_SHIFT(0x17));
ax->running = 0;
wmb();
del_timer_sync(&ax->mii_timer);
ax_ei_close(dev);
free_irq(dev->irq, dev);
return 0;
}
static int ax_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
{
struct ax_device *ax = to_ax_dev(dev);
unsigned long flags;
int rc;
if (!netif_running(dev))
return -EINVAL;
spin_lock_irqsave(&ax->mii_lock, flags);
rc = generic_mii_ioctl(&ax->mii, if_mii(req), cmd, NULL);
spin_unlock_irqrestore(&ax->mii_lock, flags);
return rc;
}
/* ethtool ops */
static void ax_get_drvinfo(struct net_device *dev,
struct ethtool_drvinfo *info)
{
struct ax_device *ax = to_ax_dev(dev);
strcpy(info->driver, DRV_NAME);
strcpy(info->version, DRV_VERSION);
strcpy(info->bus_info, ax->dev->name);
}
static int ax_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct ax_device *ax = to_ax_dev(dev);
unsigned long flags;
spin_lock_irqsave(&ax->mii_lock, flags);
mii_ethtool_gset(&ax->mii, cmd);
spin_lock_irqsave(&ax->mii_lock, flags);
return 0;
}
static int ax_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
struct ax_device *ax = to_ax_dev(dev);
unsigned long flags;
int rc;
spin_lock_irqsave(&ax->mii_lock, flags);
rc = mii_ethtool_sset(&ax->mii, cmd);
spin_lock_irqsave(&ax->mii_lock, flags);
return rc;
}
static int ax_nway_reset(struct net_device *dev)
{
struct ax_device *ax = to_ax_dev(dev);
return mii_nway_restart(&ax->mii);
}
static u32 ax_get_link(struct net_device *dev)
{
struct ax_device *ax = to_ax_dev(dev);
return mii_link_ok(&ax->mii);
}
static const struct ethtool_ops ax_ethtool_ops = {
.get_drvinfo = ax_get_drvinfo,
.get_settings = ax_get_settings,
.set_settings = ax_set_settings,
.nway_reset = ax_nway_reset,
.get_link = ax_get_link,
.get_perm_addr = ethtool_op_get_perm_addr,
};
/* setup code */
static void ax_initial_setup(struct net_device *dev, struct ei_device *ei_local)
{
void __iomem *ioaddr = ei_local->mem;
struct ax_device *ax = to_ax_dev(dev);
/* Select page 0*/
ei_outb(E8390_NODMA+E8390_PAGE0+E8390_STOP, ioaddr + E8390_CMD);
/* set to byte access */
ei_outb(ax->plat->dcr_val & ~1, ioaddr + EN0_DCFG);
ei_outb(ax->plat->gpoc_val, ioaddr + EI_SHIFT(0x17));
}
/* ax_init_dev
*
* initialise the specified device, taking care to note the MAC
* address it may already have (if configured), ensure
* the device is ready to be used by lib8390.c and registerd with
* the network layer.
*/
static int ax_init_dev(struct net_device *dev, int first_init)
{
struct ei_device *ei_local = netdev_priv(dev);
struct ax_device *ax = to_ax_dev(dev);
void __iomem *ioaddr = ei_local->mem;
unsigned int start_page;
unsigned int stop_page;
int ret;
int i;
ret = ax_initial_check(dev);
if (ret)
goto err_out;
/* setup goes here */
ax_initial_setup(dev, ei_local);
/* read the mac from the card prom if we need it */
if (first_init && ax->plat->flags & AXFLG_HAS_EEPROM) {
unsigned char SA_prom[32];
for(i = 0; i < sizeof(SA_prom); i+=2) {
SA_prom[i] = ei_inb(ioaddr + NE_DATAPORT);
SA_prom[i+1] = ei_inb(ioaddr + NE_DATAPORT);
}
if (ax->plat->wordlength == 2)
for (i = 0; i < 16; i++)
SA_prom[i] = SA_prom[i+i];
memcpy(dev->dev_addr, SA_prom, 6);
}
if (ax->plat->wordlength == 2) {
/* We must set the 8390 for word mode. */
ei_outb(ax->plat->dcr_val, ei_local->mem + EN0_DCFG);
start_page = NESM_START_PG;
stop_page = NESM_STOP_PG;
} else {
start_page = NE1SM_START_PG;
stop_page = NE1SM_STOP_PG;
}
/* load the mac-address from the device if this is the
* first time we've initialised */
if (first_init && ax->plat->flags & AXFLG_MAC_FROMDEV) {
ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
ei_local->mem + E8390_CMD); /* 0x61 */
for (i = 0 ; i < ETHER_ADDR_LEN ; i++)
dev->dev_addr[i] = ei_inb(ioaddr + EN1_PHYS_SHIFT(i));
}
ax_reset_8390(dev);
ei_status.name = "AX88796";
ei_status.tx_start_page = start_page;
ei_status.stop_page = stop_page;
ei_status.word16 = (ax->plat->wordlength == 2);
ei_status.rx_start_page = start_page + TX_PAGES;
#ifdef PACKETBUF_MEMSIZE
/* Allow the packet buffer size to be overridden by know-it-alls. */
ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
#endif
ei_status.reset_8390 = &ax_reset_8390;
ei_status.block_input = &ax_block_input;
ei_status.block_output = &ax_block_output;
ei_status.get_8390_hdr = &ax_get_8390_hdr;
ei_status.priv = 0;
dev->open = ax_open;
dev->stop = ax_close;
dev->do_ioctl = ax_ioctl;
dev->ethtool_ops = &ax_ethtool_ops;
ax->msg_enable = NETIF_MSG_LINK;
ax->mii.phy_id_mask = 0x1f;
ax->mii.reg_num_mask = 0x1f;
ax->mii.phy_id = 0x10; /* onboard phy */
ax->mii.force_media = 0;
ax->mii.full_duplex = 0;
ax->mii.mdio_read = ax_phy_read;
ax->mii.mdio_write = ax_phy_write;
ax->mii.dev = dev;
#ifdef CONFIG_NET_POLL_CONTROLLER
dev->poll_controller = ax_ei_poll;
#endif
ax_NS8390_init(dev, 0);
if (first_init) {
printk("AX88796: %dbit, irq %d, %lx, MAC: ",
ei_status.word16 ? 16:8, dev->irq, dev->base_addr);
for (i = 0; i < ETHER_ADDR_LEN; i++)
printk("%2.2x%c", dev->dev_addr[i],
(i < (ETHER_ADDR_LEN-1) ? ':' : ' '));
printk("\n");
}
ret = register_netdev(dev);
if (ret)
goto out_irq;
return 0;
out_irq:
/* cleanup irq */
free_irq(dev->irq, dev);
err_out:
return ret;
}
static int ax_remove(struct platform_device *_dev)
{
struct net_device *dev = platform_get_drvdata(_dev);
struct ax_device *ax;
ax = to_ax_dev(dev);
unregister_netdev(dev);
free_irq(dev->irq, dev);
iounmap(ei_status.mem);
release_resource(ax->mem);
kfree(ax->mem);
if (ax->map2) {
iounmap(ax->map2);
release_resource(ax->mem2);
kfree(ax->mem2);
}
free_netdev(dev);
return 0;
}
/* ax_probe
*
* This is the entry point when the platform device system uses to
* notify us of a new device to attach to. Allocate memory, find
* the resources and information passed, and map the necessary registers.
*/
static int ax_probe(struct platform_device *pdev)
{
struct net_device *dev;
struct ax_device *ax;
struct resource *res;
size_t size;
int ret;
dev = ax__alloc_ei_netdev(sizeof(struct ax_device));
if (dev == NULL)
return -ENOMEM;
/* ok, let's setup our device */
ax = to_ax_dev(dev);
memset(ax, 0, sizeof(struct ax_device));
spin_lock_init(&ax->mii_lock);
ax->dev = pdev;
ax->plat = pdev->dev.platform_data;
platform_set_drvdata(pdev, dev);
ei_status.rxcr_base = ax->plat->rcr_val;
/* find the platform resources */
dev->irq = platform_get_irq(pdev, 0);
if (dev->irq < 0) {
dev_err(&pdev->dev, "no IRQ specified\n");
ret = -ENXIO;
goto exit_mem;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (res == NULL) {
dev_err(&pdev->dev, "no MEM specified\n");
ret = -ENXIO;
goto exit_mem;
}
size = (res->end - res->start) + 1;
/* setup the register offsets from either the platform data
* or by using the size of the resource provided */
if (ax->plat->reg_offsets)
ei_status.reg_offset = ax->plat->reg_offsets;
else {
ei_status.reg_offset = ax->reg_offsets;
for (ret = 0; ret < 0x18; ret++)
ax->reg_offsets[ret] = (size / 0x18) * ret;
}
ax->mem = request_mem_region(res->start, size, pdev->name);
if (ax->mem == NULL) {
dev_err(&pdev->dev, "cannot reserve registers\n");
ret = -ENXIO;
goto exit_mem;
}
ei_status.mem = ioremap(res->start, size);
dev->base_addr = (long)ei_status.mem;
if (ei_status.mem == NULL) {
dev_err(&pdev->dev, "Cannot ioremap area (%08zx,%08zx)\n",
res->start, res->end);
ret = -ENXIO;
goto exit_req;
}
/* look for reset area */
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (res == NULL) {
if (!ax->plat->reg_offsets) {
for (ret = 0; ret < 0x20; ret++)
ax->reg_offsets[ret] = (size / 0x20) * ret;
}
ax->map2 = NULL;
} else {
size = (res->end - res->start) + 1;
ax->mem2 = request_mem_region(res->start, size, pdev->name);
if (ax->mem == NULL) {
dev_err(&pdev->dev, "cannot reserve registers\n");
ret = -ENXIO;
goto exit_mem1;
}
ax->map2 = ioremap(res->start, size);
if (ax->map2 == NULL) {
dev_err(&pdev->dev, "cannot map reset register");
ret = -ENXIO;
goto exit_mem2;
}
ei_status.reg_offset[0x1f] = ax->map2 - ei_status.mem;
}
/* got resources, now initialise and register device */
ret = ax_init_dev(dev, 1);
if (!ret)
return 0;
if (ax->map2 == NULL)
goto exit_mem1;
iounmap(ax->map2);
exit_mem2:
release_resource(ax->mem2);
kfree(ax->mem2);
exit_mem1:
iounmap(ei_status.mem);
exit_req:
release_resource(ax->mem);
kfree(ax->mem);
exit_mem:
free_netdev(dev);
return ret;
}
/* suspend and resume */
#ifdef CONFIG_PM
static int ax_suspend(struct platform_device *dev, pm_message_t state)
{
struct net_device *ndev = platform_get_drvdata(dev);
struct ax_device *ax = to_ax_dev(ndev);
ax->resume_open = ax->running;
netif_device_detach(ndev);
ax_close(ndev);
return 0;
}
static int ax_resume(struct platform_device *pdev)
{
struct net_device *ndev = platform_get_drvdata(pdev);
struct ax_device *ax = to_ax_dev(ndev);
ax_initial_setup(ndev, netdev_priv(ndev));
ax_NS8390_init(ndev, ax->resume_open);
netif_device_attach(ndev);
if (ax->resume_open)
ax_open(ndev);
return 0;
}
#else
#define ax_suspend NULL
#define ax_resume NULL
#endif
static struct platform_driver axdrv = {
.driver = {
.name = "ax88796",
.owner = THIS_MODULE,
},
.probe = ax_probe,
.remove = ax_remove,
.suspend = ax_suspend,
.resume = ax_resume,
};
static int __init axdrv_init(void)
{
return platform_driver_register(&axdrv);
}
static void __exit axdrv_exit(void)
{
platform_driver_unregister(&axdrv);
}
module_init(axdrv_init);
module_exit(axdrv_exit);
MODULE_DESCRIPTION("AX88796 10/100 Ethernet platform driver");
MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
MODULE_LICENSE("GPL v2");

27
include/net/ax88796.h Normal file
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/* include/net/ax88796.h
*
* Copyright 2005 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#ifndef __NET_AX88796_PLAT_H
#define __NET_AX88796_PLAT_H
#define AXFLG_HAS_EEPROM (1<<0)
#define AXFLG_MAC_FROMDEV (1<<1) /* device already has MAC */
struct ax_plat_data {
unsigned int flags;
unsigned char wordlength; /* 1 or 2 */
unsigned char dcr_val; /* default value for DCR */
unsigned char rcr_val; /* default value for RCR */
unsigned char gpoc_val; /* default value for GPOC */
u32 *reg_offsets; /* register offsets */
};
#endif /* __NET_AX88796_PLAT_H */