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
Jeff Garzik
Родитель
f49343a548
Коммит
825a2ff189
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@ -73,6 +73,9 @@ struct ei_device {
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u32 *reg_offset; /* Register mapping table */
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spinlock_t page_lock; /* Page register locks */
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unsigned long priv; /* Private field to store bus IDs etc. */
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#ifdef AX88796_PLATFORM
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unsigned char rxcr_base; /* default value for RXCR */
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#endif
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};
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/* The maximum number of 8390 interrupt service routines called per IRQ. */
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@ -86,11 +89,19 @@ struct ei_device {
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/* Some generic ethernet register configurations. */
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#define E8390_TX_IRQ_MASK 0xa /* For register EN0_ISR */
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#define E8390_RX_IRQ_MASK 0x5
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#ifdef AX88796_PLATFORM
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#define E8390_RXCONFIG (ei_status.rxcr_base | 0x04)
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#define E8390_RXOFF (ei_status.rxcr_base | 0x20)
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#else
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#define E8390_RXCONFIG 0x4 /* EN0_RXCR: broadcasts, no multicast,errors */
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#define E8390_RXOFF 0x20 /* EN0_RXCR: Accept no packets */
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#endif
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#define E8390_TXCONFIG 0x00 /* EN0_TXCR: Normal transmit mode */
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#define E8390_TXOFF 0x02 /* EN0_TXCR: Transmitter off */
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/* Register accessed at EN_CMD, the 8390 base addr. */
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#define E8390_STOP 0x01 /* Stop and reset the chip */
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#define E8390_START 0x02 /* Start the chip, clear reset */
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@ -197,6 +197,14 @@ config MACB
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source "drivers/net/arm/Kconfig"
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config AX88796
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tristate "ASIX AX88796 NE2000 clone support"
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select CRC32
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select MII
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help
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AX88796 driver, using platform bus to provide
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chip detection and resources
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config MACE
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tristate "MACE (Power Mac ethernet) support"
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depends on PPC_PMAC && PPC32
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@ -107,6 +107,7 @@ obj-$(CONFIG_NET_SB1250_MAC) += sb1250-mac.o
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obj-$(CONFIG_B44) += b44.o
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obj-$(CONFIG_FORCEDETH) += forcedeth.o
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obj-$(CONFIG_NE_H8300) += ne-h8300.o
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obj-$(CONFIG_AX88796) += ax88796.o
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obj-$(CONFIG_TSI108_ETH) += tsi108_eth.o
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obj-$(CONFIG_MV643XX_ETH) += mv643xx_eth.o
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@ -0,0 +1,952 @@
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/* drivers/net/ax88796.c
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*
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* Copyright 2005,2007 Simtec Electronics
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* Ben Dooks <ben@simtec.co.uk>
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*
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* Asix AX88796 10/100 Ethernet controller support
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* Based on ne.c, by Donald Becker, et-al.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/isapnp.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/delay.h>
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#include <linux/timer.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/ethtool.h>
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#include <linux/mii.h>
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#include <net/ax88796.h>
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#include <asm/system.h>
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#include <asm/io.h>
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static int phy_debug = 0;
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/* Rename the lib8390.c functions to show that they are in this driver */
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#define __ei_open ax_ei_open
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#define __ei_close ax_ei_close
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#define __ei_poll ax_ei_poll
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#define __ei_tx_timeout ax_ei_tx_timeout
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#define __ei_interrupt ax_ei_interrupt
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#define ____alloc_ei_netdev ax__alloc_ei_netdev
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#define __NS8390_init ax_NS8390_init
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/* force unsigned long back to 'void __iomem *' */
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#define ax_convert_addr(_a) ((void __force __iomem *)(_a))
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#define ei_inb(_a) readb(ax_convert_addr(_a))
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#define ei_outb(_v, _a) writeb(_v, ax_convert_addr(_a))
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#define ei_inb_p(_a) ei_inb(_a)
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#define ei_outb_p(_v, _a) ei_outb(_v, _a)
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/* define EI_SHIFT() to take into account our register offsets */
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#define EI_SHIFT(x) (ei_local->reg_offset[(x)])
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/* Ensure we have our RCR base value */
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#define AX88796_PLATFORM
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static unsigned char version[] = "ax88796.c: Copyright 2005,2007 Simtec Electronics\n";
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#include "lib8390.c"
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#define DRV_NAME "ax88796"
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#define DRV_VERSION "1.00"
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/* from ne.c */
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#define NE_CMD EI_SHIFT(0x00)
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#define NE_RESET EI_SHIFT(0x1f)
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#define NE_DATAPORT EI_SHIFT(0x10)
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#define NE1SM_START_PG 0x20 /* First page of TX buffer */
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#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
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#define NESM_START_PG 0x40 /* First page of TX buffer */
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#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
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/* device private data */
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struct ax_device {
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struct timer_list mii_timer;
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spinlock_t mii_lock;
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struct mii_if_info mii;
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u32 msg_enable;
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void __iomem *map2;
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struct platform_device *dev;
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struct resource *mem;
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struct resource *mem2;
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struct ax_plat_data *plat;
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unsigned char running;
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unsigned char resume_open;
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u32 reg_offsets[0x20];
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};
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static inline struct ax_device *to_ax_dev(struct net_device *dev)
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{
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struct ei_device *ei_local = netdev_priv(dev);
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return (struct ax_device *)(ei_local+1);
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}
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/* ax_initial_check
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*
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* do an initial probe for the card to check wether it exists
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* and is functional
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*/
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static int ax_initial_check(struct net_device *dev)
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{
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struct ei_device *ei_local = netdev_priv(dev);
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void __iomem *ioaddr = ei_local->mem;
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int reg0;
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int regd;
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reg0 = ei_inb(ioaddr);
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if (reg0 == 0xFF)
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return -ENODEV;
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ei_outb(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD);
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regd = ei_inb(ioaddr + 0x0d);
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ei_outb(0xff, ioaddr + 0x0d);
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ei_outb(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD);
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ei_inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */
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if (ei_inb(ioaddr + EN0_COUNTER0) != 0) {
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ei_outb(reg0, ioaddr);
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ei_outb(regd, ioaddr + 0x0d); /* Restore the old values. */
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return -ENODEV;
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}
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return 0;
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}
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/* Hard reset the card. This used to pause for the same period that a
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8390 reset command required, but that shouldn't be necessary. */
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static void ax_reset_8390(struct net_device *dev)
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{
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struct ei_device *ei_local = netdev_priv(dev);
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unsigned long reset_start_time = jiffies;
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void __iomem *addr = (void __iomem *)dev->base_addr;
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if (ei_debug > 1)
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printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies);
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ei_outb(ei_inb(addr + NE_RESET), addr + NE_RESET);
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ei_status.txing = 0;
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ei_status.dmaing = 0;
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/* This check _should_not_ be necessary, omit eventually. */
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while ((ei_inb(addr + EN0_ISR) & ENISR_RESET) == 0) {
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if (jiffies - reset_start_time > 2*HZ/100) {
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printk(KERN_WARNING "%s: %s did not complete.\n",
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__FUNCTION__, dev->name);
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break;
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}
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}
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ei_outb(ENISR_RESET, addr + EN0_ISR); /* Ack intr. */
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}
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static void ax_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
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int ring_page)
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{
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struct ei_device *ei_local = netdev_priv(dev);
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void __iomem *nic_base = ei_local->mem;
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/* This *shouldn't* happen. If it does, it's the last thing you'll see */
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if (ei_status.dmaing) {
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printk(KERN_EMERG "%s: DMAing conflict in %s [DMAstat:%d][irqlock:%d].\n",
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dev->name, __FUNCTION__,
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ei_status.dmaing, ei_status.irqlock);
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return;
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}
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ei_status.dmaing |= 0x01;
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ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
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ei_outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
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ei_outb(0, nic_base + EN0_RCNTHI);
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ei_outb(0, nic_base + EN0_RSARLO); /* On page boundary */
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ei_outb(ring_page, nic_base + EN0_RSARHI);
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ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
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if (ei_status.word16)
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readsw(nic_base + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
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else
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readsb(nic_base + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
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ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
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ei_status.dmaing &= ~0x01;
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le16_to_cpus(&hdr->count);
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}
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/* Block input and output, similar to the Crynwr packet driver. If you
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are porting to a new ethercard, look at the packet driver source for hints.
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The NEx000 doesn't share the on-board packet memory -- you have to put
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the packet out through the "remote DMA" dataport using ei_outb. */
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static void ax_block_input(struct net_device *dev, int count,
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struct sk_buff *skb, int ring_offset)
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{
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struct ei_device *ei_local = netdev_priv(dev);
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void __iomem *nic_base = ei_local->mem;
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char *buf = skb->data;
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if (ei_status.dmaing) {
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printk(KERN_EMERG "%s: DMAing conflict in ax_block_input "
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"[DMAstat:%d][irqlock:%d].\n",
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dev->name, ei_status.dmaing, ei_status.irqlock);
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return;
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}
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ei_status.dmaing |= 0x01;
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ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
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ei_outb(count & 0xff, nic_base + EN0_RCNTLO);
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ei_outb(count >> 8, nic_base + EN0_RCNTHI);
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ei_outb(ring_offset & 0xff, nic_base + EN0_RSARLO);
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ei_outb(ring_offset >> 8, nic_base + EN0_RSARHI);
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ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
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if (ei_status.word16) {
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readsw(nic_base + NE_DATAPORT, buf, count >> 1);
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if (count & 0x01)
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buf[count-1] = ei_inb(nic_base + NE_DATAPORT);
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} else {
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readsb(nic_base + NE_DATAPORT, buf, count);
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}
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ei_status.dmaing &= ~1;
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}
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static void ax_block_output(struct net_device *dev, int count,
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const unsigned char *buf, const int start_page)
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{
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struct ei_device *ei_local = netdev_priv(dev);
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void __iomem *nic_base = ei_local->mem;
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unsigned long dma_start;
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/* Round the count up for word writes. Do we need to do this?
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What effect will an odd byte count have on the 8390?
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I should check someday. */
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if (ei_status.word16 && (count & 0x01))
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count++;
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/* This *shouldn't* happen. If it does, it's the last thing you'll see */
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if (ei_status.dmaing) {
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printk(KERN_EMERG "%s: DMAing conflict in %s."
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"[DMAstat:%d][irqlock:%d]\n",
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dev->name, __FUNCTION__,
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ei_status.dmaing, ei_status.irqlock);
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return;
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}
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ei_status.dmaing |= 0x01;
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/* We should already be in page 0, but to be safe... */
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ei_outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
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ei_outb(ENISR_RDC, nic_base + EN0_ISR);
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/* Now the normal output. */
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ei_outb(count & 0xff, nic_base + EN0_RCNTLO);
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ei_outb(count >> 8, nic_base + EN0_RCNTHI);
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ei_outb(0x00, nic_base + EN0_RSARLO);
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ei_outb(start_page, nic_base + EN0_RSARHI);
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ei_outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
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if (ei_status.word16) {
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writesw(nic_base + NE_DATAPORT, buf, count>>1);
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} else {
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writesb(nic_base + NE_DATAPORT, buf, count);
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}
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dma_start = jiffies;
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while ((ei_inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) {
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if (jiffies - dma_start > 2*HZ/100) { /* 20ms */
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printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name);
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ax_reset_8390(dev);
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ax_NS8390_init(dev,1);
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break;
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}
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}
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ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
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ei_status.dmaing &= ~0x01;
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return;
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}
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/* definitions for accessing MII/EEPROM interface */
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#define AX_MEMR EI_SHIFT(0x14)
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#define AX_MEMR_MDC (1<<0)
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#define AX_MEMR_MDIR (1<<1)
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#define AX_MEMR_MDI (1<<2)
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#define AX_MEMR_MDO (1<<3)
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#define AX_MEMR_EECS (1<<4)
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#define AX_MEMR_EEI (1<<5)
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#define AX_MEMR_EEO (1<<6)
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#define AX_MEMR_EECLK (1<<7)
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/* ax_mii_ei_outbits
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*
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* write the specified set of bits to the phy
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*/
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static void
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ax_mii_ei_outbits(struct net_device *dev, unsigned int bits, int len)
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{
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struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
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void __iomem *memr_addr = (void __iomem *)dev->base_addr + AX_MEMR;
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unsigned int memr;
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/* clock low, data to output mode */
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memr = ei_inb(memr_addr);
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memr &= ~(AX_MEMR_MDC | AX_MEMR_MDIR);
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ei_outb(memr, memr_addr);
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for (len--; len >= 0; len--) {
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if (bits & (1 << len))
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memr |= AX_MEMR_MDO;
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else
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memr &= ~AX_MEMR_MDO;
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ei_outb(memr, memr_addr);
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/* clock high */
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ei_outb(memr | AX_MEMR_MDC, memr_addr);
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udelay(1);
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/* clock low */
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ei_outb(memr, memr_addr);
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}
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/* leaves the clock line low, mdir input */
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memr |= AX_MEMR_MDIR;
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ei_outb(memr, (void __iomem *)dev->base_addr + AX_MEMR);
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}
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/* ax_phy_ei_inbits
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*
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* read a specified number of bits from the phy
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*/
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static unsigned int
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ax_phy_ei_inbits(struct net_device *dev, int no)
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{
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struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
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void __iomem *memr_addr = (void __iomem *)dev->base_addr + AX_MEMR;
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unsigned int memr;
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unsigned int result = 0;
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/* clock low, data to input mode */
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memr = ei_inb(memr_addr);
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memr &= ~AX_MEMR_MDC;
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memr |= AX_MEMR_MDIR;
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ei_outb(memr, memr_addr);
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for (no--; no >= 0; no--) {
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ei_outb(memr | AX_MEMR_MDC, memr_addr);
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udelay(1);
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if (ei_inb(memr_addr) & AX_MEMR_MDI)
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result |= (1<<no);
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ei_outb(memr, memr_addr);
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}
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return result;
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}
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/* 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");
|
||||
|
|
@ -0,0 +1,27 @@
|
|||
/* 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 */
|
||||
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