// SPDX-License-Identifier: GPL-2.0-only
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/* drivers/net/ethernet/8390/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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#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/interrupt.h>
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#include <linux/io.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/mdio-bitbang.h>
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#include <linux/phy.h>
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#include <linux/eeprom_93cx6.h>
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#include <linux/slab.h>
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#include <net/ax88796.h>
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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_start_xmit ax_ei_start_xmit
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#define __ei_tx_timeout ax_ei_tx_timeout
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#define __ei_get_stats ax_ei_get_stats
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#define __ei_set_multicast_list ax_ei_set_multicast_list
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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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#define AX_GPOC_PPDSET BIT(6)
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/* device private data */
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struct ax_device {
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struct mii_bus *mii_bus;
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struct mdiobb_ctrl bb_ctrl;
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void __iomem *addr_memr;
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u8 reg_memr;
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int link;
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int speed;
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int duplex;
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void __iomem *map2;
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const struct ax_plat_data *plat;
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unsigned char running;
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unsigned char resume_open;
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unsigned int irqflags;
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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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/*
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* ax_initial_check
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*
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* do an initial probe for the card to check whether 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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/*
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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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*/
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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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netif_dbg(ei_local, hw, dev, "resetting the 8390 t=%ld...\n", jiffies);
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ei_outb(ei_inb(addr + NE_RESET), addr + NE_RESET);
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ei_local->txing = 0;
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ei_local->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) {
|
if (time_after(jiffies, reset_start_time + 2 * HZ / 100)) {
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netdev_warn(dev, "%s: did not complete.\n", __func__);
|
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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/* Wrapper for __ei_interrupt for platforms that have a platform-specific
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* way to find out whether the interrupt request might be caused by
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* the ax88796 chip.
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*/
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static irqreturn_t ax_ei_interrupt_filtered(int irq, void *dev_id)
|
{
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struct net_device *dev = dev_id;
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struct ax_device *ax = to_ax_dev(dev);
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struct platform_device *pdev = to_platform_device(dev->dev.parent);
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if (!ax->plat->check_irq(pdev))
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return IRQ_NONE;
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return ax_ei_interrupt(irq, dev_id);
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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_local->dmaing) {
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netdev_err(dev, "DMAing conflict in %s "
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"[DMAstat:%d][irqlock:%d].\n",
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__func__,
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ei_local->dmaing, ei_local->irqlock);
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return;
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}
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ei_local->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_local->word16)
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ioread16_rep(nic_base + NE_DATAPORT, hdr,
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sizeof(struct e8390_pkt_hdr) >> 1);
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else
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ioread8_rep(nic_base + NE_DATAPORT, hdr,
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sizeof(struct e8390_pkt_hdr));
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ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */
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ei_local->dmaing &= ~0x01;
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le16_to_cpus(&hdr->count);
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}
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|
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/*
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* Block input and output, similar to the Crynwr packet driver. If
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* you are porting to a new ethercard, look at the packet driver
|
* source for hints. The NEx000 doesn't share the on-board packet
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* memory -- you have to put the packet out through the "remote DMA"
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* dataport using ei_outb.
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*/
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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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{
|
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;
|
|
if (ei_local->dmaing) {
|
netdev_err(dev,
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"DMAing conflict in %s "
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"[DMAstat:%d][irqlock:%d].\n",
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__func__,
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ei_local->dmaing, ei_local->irqlock);
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return;
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}
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ei_local->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_local->word16) {
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ioread16_rep(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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ioread8_rep(nic_base + NE_DATAPORT, buf, count);
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}
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ei_local->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)
|
{
|
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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/*
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* 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.
|
*/
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if (ei_local->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_local->dmaing) {
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netdev_err(dev, "DMAing conflict in %s."
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"[DMAstat:%d][irqlock:%d]\n",
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__func__,
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ei_local->dmaing, ei_local->irqlock);
|
return;
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}
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|
ei_local->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_local->word16)
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iowrite16_rep(nic_base + NE_DATAPORT, buf, count >> 1);
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else
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iowrite8_rep(nic_base + NE_DATAPORT, buf, count);
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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 (time_after(jiffies, dma_start + 2 * HZ / 100)) { /* 20ms */
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netdev_warn(dev, "timeout waiting for Tx RDC.\n");
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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_local->dmaing &= ~0x01;
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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 BIT(0)
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#define AX_MEMR_MDIR BIT(1)
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#define AX_MEMR_MDI BIT(2)
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#define AX_MEMR_MDO BIT(3)
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#define AX_MEMR_EECS BIT(4)
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#define AX_MEMR_EEI BIT(5)
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#define AX_MEMR_EEO BIT(6)
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#define AX_MEMR_EECLK BIT(7)
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|
static void ax_handle_link_change(struct net_device *dev)
|
{
|
struct ax_device *ax = to_ax_dev(dev);
|
struct phy_device *phy_dev = dev->phydev;
|
int status_change = 0;
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|
if (phy_dev->link && ((ax->speed != phy_dev->speed) ||
|
(ax->duplex != phy_dev->duplex))) {
|
|
ax->speed = phy_dev->speed;
|
ax->duplex = phy_dev->duplex;
|
status_change = 1;
|
}
|
|
if (phy_dev->link != ax->link) {
|
if (!phy_dev->link) {
|
ax->speed = 0;
|
ax->duplex = -1;
|
}
|
ax->link = phy_dev->link;
|
|
status_change = 1;
|
}
|
|
if (status_change)
|
phy_print_status(phy_dev);
|
}
|
|
static int ax_mii_probe(struct net_device *dev)
|
{
|
struct ax_device *ax = to_ax_dev(dev);
|
struct phy_device *phy_dev = NULL;
|
int ret;
|
|
/* find the first phy */
|
phy_dev = phy_find_first(ax->mii_bus);
|
if (!phy_dev) {
|
netdev_err(dev, "no PHY found\n");
|
return -ENODEV;
|
}
|
|
ret = phy_connect_direct(dev, phy_dev, ax_handle_link_change,
|
PHY_INTERFACE_MODE_MII);
|
if (ret) {
|
netdev_err(dev, "Could not attach to PHY\n");
|
return ret;
|
}
|
|
phy_set_max_speed(phy_dev, SPEED_100);
|
|
netdev_info(dev, "PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n",
|
phy_dev->drv->name, phydev_name(phy_dev), phy_dev->irq);
|
|
return 0;
|
}
|
|
static void ax_phy_switch(struct net_device *dev, int on)
|
{
|
struct ei_device *ei_local = netdev_priv(dev);
|
struct ax_device *ax = to_ax_dev(dev);
|
|
u8 reg_gpoc = ax->plat->gpoc_val;
|
|
if (!!on)
|
reg_gpoc &= ~AX_GPOC_PPDSET;
|
else
|
reg_gpoc |= AX_GPOC_PPDSET;
|
|
ei_outb(reg_gpoc, ei_local->mem + EI_SHIFT(0x17));
|
}
|
|
static void ax_bb_mdc(struct mdiobb_ctrl *ctrl, int level)
|
{
|
struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl);
|
|
if (level)
|
ax->reg_memr |= AX_MEMR_MDC;
|
else
|
ax->reg_memr &= ~AX_MEMR_MDC;
|
|
ei_outb(ax->reg_memr, ax->addr_memr);
|
}
|
|
static void ax_bb_dir(struct mdiobb_ctrl *ctrl, int output)
|
{
|
struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl);
|
|
if (output)
|
ax->reg_memr &= ~AX_MEMR_MDIR;
|
else
|
ax->reg_memr |= AX_MEMR_MDIR;
|
|
ei_outb(ax->reg_memr, ax->addr_memr);
|
}
|
|
static void ax_bb_set_data(struct mdiobb_ctrl *ctrl, int value)
|
{
|
struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl);
|
|
if (value)
|
ax->reg_memr |= AX_MEMR_MDO;
|
else
|
ax->reg_memr &= ~AX_MEMR_MDO;
|
|
ei_outb(ax->reg_memr, ax->addr_memr);
|
}
|
|
static int ax_bb_get_data(struct mdiobb_ctrl *ctrl)
|
{
|
struct ax_device *ax = container_of(ctrl, struct ax_device, bb_ctrl);
|
int reg_memr = ei_inb(ax->addr_memr);
|
|
return reg_memr & AX_MEMR_MDI ? 1 : 0;
|
}
|
|
static const struct mdiobb_ops bb_ops = {
|
.owner = THIS_MODULE,
|
.set_mdc = ax_bb_mdc,
|
.set_mdio_dir = ax_bb_dir,
|
.set_mdio_data = ax_bb_set_data,
|
.get_mdio_data = ax_bb_get_data,
|
};
|
|
static int ax_mii_init(struct net_device *dev)
|
{
|
struct platform_device *pdev = to_platform_device(dev->dev.parent);
|
struct ei_device *ei_local = netdev_priv(dev);
|
struct ax_device *ax = to_ax_dev(dev);
|
int err;
|
|
ax->bb_ctrl.ops = &bb_ops;
|
ax->addr_memr = ei_local->mem + AX_MEMR;
|
ax->mii_bus = alloc_mdio_bitbang(&ax->bb_ctrl);
|
if (!ax->mii_bus) {
|
err = -ENOMEM;
|
goto out;
|
}
|
|
ax->mii_bus->name = "ax88796_mii_bus";
|
ax->mii_bus->parent = dev->dev.parent;
|
snprintf(ax->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
|
pdev->name, pdev->id);
|
|
err = mdiobus_register(ax->mii_bus);
|
if (err)
|
goto out_free_mdio_bitbang;
|
|
return 0;
|
|
out_free_mdio_bitbang:
|
free_mdio_bitbang(ax->mii_bus);
|
out:
|
return err;
|
}
|
|
static int ax_open(struct net_device *dev)
|
{
|
struct ax_device *ax = to_ax_dev(dev);
|
int ret;
|
|
netdev_dbg(dev, "open\n");
|
|
ret = ax_mii_init(dev);
|
if (ret)
|
goto failed_mii;
|
|
if (ax->plat->check_irq)
|
ret = request_irq(dev->irq, ax_ei_interrupt_filtered,
|
ax->irqflags, dev->name, dev);
|
else
|
ret = request_irq(dev->irq, ax_ei_interrupt, ax->irqflags,
|
dev->name, dev);
|
if (ret)
|
goto failed_request_irq;
|
|
/* turn the phy on (if turned off) */
|
ax_phy_switch(dev, 1);
|
|
ret = ax_mii_probe(dev);
|
if (ret)
|
goto failed_mii_probe;
|
phy_start(dev->phydev);
|
|
ret = ax_ei_open(dev);
|
if (ret)
|
goto failed_ax_ei_open;
|
|
ax->running = 1;
|
|
return 0;
|
|
failed_ax_ei_open:
|
phy_disconnect(dev->phydev);
|
failed_mii_probe:
|
ax_phy_switch(dev, 0);
|
free_irq(dev->irq, dev);
|
failed_request_irq:
|
/* unregister mdiobus */
|
mdiobus_unregister(ax->mii_bus);
|
free_mdio_bitbang(ax->mii_bus);
|
failed_mii:
|
return ret;
|
}
|
|
static int ax_close(struct net_device *dev)
|
{
|
struct ax_device *ax = to_ax_dev(dev);
|
|
netdev_dbg(dev, "close\n");
|
|
ax->running = 0;
|
wmb();
|
|
ax_ei_close(dev);
|
|
/* turn the phy off */
|
ax_phy_switch(dev, 0);
|
phy_disconnect(dev->phydev);
|
|
free_irq(dev->irq, dev);
|
|
mdiobus_unregister(ax->mii_bus);
|
free_mdio_bitbang(ax->mii_bus);
|
return 0;
|
}
|
|
static int ax_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
|
{
|
struct phy_device *phy_dev = dev->phydev;
|
|
if (!netif_running(dev))
|
return -EINVAL;
|
|
if (!phy_dev)
|
return -ENODEV;
|
|
return phy_mii_ioctl(phy_dev, req, cmd);
|
}
|
|
/* ethtool ops */
|
|
static void ax_get_drvinfo(struct net_device *dev,
|
struct ethtool_drvinfo *info)
|
{
|
struct platform_device *pdev = to_platform_device(dev->dev.parent);
|
|
strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
|
strlcpy(info->version, DRV_VERSION, sizeof(info->version));
|
strlcpy(info->bus_info, pdev->name, sizeof(info->bus_info));
|
}
|
|
static u32 ax_get_msglevel(struct net_device *dev)
|
{
|
struct ei_device *ei_local = netdev_priv(dev);
|
|
return ei_local->msg_enable;
|
}
|
|
static void ax_set_msglevel(struct net_device *dev, u32 v)
|
{
|
struct ei_device *ei_local = netdev_priv(dev);
|
|
ei_local->msg_enable = v;
|
}
|
|
static const struct ethtool_ops ax_ethtool_ops = {
|
.get_drvinfo = ax_get_drvinfo,
|
.get_link = ethtool_op_get_link,
|
.get_ts_info = ethtool_op_get_ts_info,
|
.get_msglevel = ax_get_msglevel,
|
.set_msglevel = ax_set_msglevel,
|
.get_link_ksettings = phy_ethtool_get_link_ksettings,
|
.set_link_ksettings = phy_ethtool_set_link_ksettings,
|
};
|
|
#ifdef CONFIG_AX88796_93CX6
|
static void ax_eeprom_register_read(struct eeprom_93cx6 *eeprom)
|
{
|
struct ei_device *ei_local = eeprom->data;
|
u8 reg = ei_inb(ei_local->mem + AX_MEMR);
|
|
eeprom->reg_data_in = reg & AX_MEMR_EEI;
|
eeprom->reg_data_out = reg & AX_MEMR_EEO; /* Input pin */
|
eeprom->reg_data_clock = reg & AX_MEMR_EECLK;
|
eeprom->reg_chip_select = reg & AX_MEMR_EECS;
|
}
|
|
static void ax_eeprom_register_write(struct eeprom_93cx6 *eeprom)
|
{
|
struct ei_device *ei_local = eeprom->data;
|
u8 reg = ei_inb(ei_local->mem + AX_MEMR);
|
|
reg &= ~(AX_MEMR_EEI | AX_MEMR_EECLK | AX_MEMR_EECS);
|
|
if (eeprom->reg_data_in)
|
reg |= AX_MEMR_EEI;
|
if (eeprom->reg_data_clock)
|
reg |= AX_MEMR_EECLK;
|
if (eeprom->reg_chip_select)
|
reg |= AX_MEMR_EECS;
|
|
ei_outb(reg, ei_local->mem + AX_MEMR);
|
udelay(10);
|
}
|
#endif
|
|
static const struct net_device_ops ax_netdev_ops = {
|
.ndo_open = ax_open,
|
.ndo_stop = ax_close,
|
.ndo_do_ioctl = ax_ioctl,
|
|
.ndo_start_xmit = ax_ei_start_xmit,
|
.ndo_tx_timeout = ax_ei_tx_timeout,
|
.ndo_get_stats = ax_ei_get_stats,
|
.ndo_set_rx_mode = ax_ei_set_multicast_list,
|
.ndo_validate_addr = eth_validate_addr,
|
.ndo_set_mac_address = eth_mac_addr,
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
.ndo_poll_controller = ax_ei_poll,
|
#endif
|
};
|
|
/* 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)
|
{
|
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 (ax->plat->flags & AXFLG_HAS_EEPROM) {
|
unsigned char SA_prom[32];
|
|
ei_outb(6, ioaddr + EN0_RCNTLO);
|
ei_outb(0, ioaddr + EN0_RCNTHI);
|
ei_outb(0, ioaddr + EN0_RSARLO);
|
ei_outb(0, ioaddr + EN0_RSARHI);
|
ei_outb(E8390_RREAD + E8390_START, ioaddr + NE_CMD);
|
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);
|
}
|
ei_outb(ENISR_RDC, ioaddr + EN0_ISR); /* Ack intr. */
|
|
if (ax->plat->wordlength == 2)
|
for (i = 0; i < 16; i++)
|
SA_prom[i] = SA_prom[i+i];
|
|
memcpy(dev->dev_addr, SA_prom, ETH_ALEN);
|
}
|
|
#ifdef CONFIG_AX88796_93CX6
|
if (ax->plat->flags & AXFLG_HAS_93CX6) {
|
unsigned char mac_addr[ETH_ALEN];
|
struct eeprom_93cx6 eeprom;
|
|
eeprom.data = ei_local;
|
eeprom.register_read = ax_eeprom_register_read;
|
eeprom.register_write = ax_eeprom_register_write;
|
eeprom.width = PCI_EEPROM_WIDTH_93C56;
|
|
eeprom_93cx6_multiread(&eeprom, 0,
|
(__le16 __force *)mac_addr,
|
sizeof(mac_addr) >> 1);
|
|
memcpy(dev->dev_addr, mac_addr, ETH_ALEN);
|
}
|
#endif
|
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 (ax->plat->flags & AXFLG_MAC_FROMDEV) {
|
ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP,
|
ei_local->mem + E8390_CMD); /* 0x61 */
|
for (i = 0; i < ETH_ALEN; i++)
|
dev->dev_addr[i] =
|
ei_inb(ioaddr + EN1_PHYS_SHIFT(i));
|
}
|
|
if ((ax->plat->flags & AXFLG_MAC_FROMPLATFORM) &&
|
ax->plat->mac_addr)
|
memcpy(dev->dev_addr, ax->plat->mac_addr, ETH_ALEN);
|
|
if (!is_valid_ether_addr(dev->dev_addr)) {
|
eth_hw_addr_random(dev);
|
dev_info(&dev->dev, "Using random MAC address: %pM\n",
|
dev->dev_addr);
|
}
|
|
ax_reset_8390(dev);
|
|
ei_local->name = "AX88796";
|
ei_local->tx_start_page = start_page;
|
ei_local->stop_page = stop_page;
|
ei_local->word16 = (ax->plat->wordlength == 2);
|
ei_local->rx_start_page = start_page + TX_PAGES;
|
|
#ifdef PACKETBUF_MEMSIZE
|
/* Allow the packet buffer size to be overridden by know-it-alls. */
|
ei_local->stop_page = ei_local->tx_start_page + PACKETBUF_MEMSIZE;
|
#endif
|
|
ei_local->reset_8390 = &ax_reset_8390;
|
if (ax->plat->block_input)
|
ei_local->block_input = ax->plat->block_input;
|
else
|
ei_local->block_input = &ax_block_input;
|
if (ax->plat->block_output)
|
ei_local->block_output = ax->plat->block_output;
|
else
|
ei_local->block_output = &ax_block_output;
|
ei_local->get_8390_hdr = &ax_get_8390_hdr;
|
ei_local->priv = 0;
|
|
dev->netdev_ops = &ax_netdev_ops;
|
dev->ethtool_ops = &ax_ethtool_ops;
|
|
ax_NS8390_init(dev, 0);
|
|
ret = register_netdev(dev);
|
if (ret)
|
goto err_out;
|
|
netdev_info(dev, "%dbit, irq %d, %lx, MAC: %pM\n",
|
ei_local->word16 ? 16 : 8, dev->irq, dev->base_addr,
|
dev->dev_addr);
|
|
return 0;
|
|
err_out:
|
return ret;
|
}
|
|
static int ax_remove(struct platform_device *pdev)
|
{
|
struct net_device *dev = platform_get_drvdata(pdev);
|
struct ei_device *ei_local = netdev_priv(dev);
|
struct ax_device *ax = to_ax_dev(dev);
|
struct resource *mem;
|
|
unregister_netdev(dev);
|
|
iounmap(ei_local->mem);
|
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
release_mem_region(mem->start, resource_size(mem));
|
|
if (ax->map2) {
|
iounmap(ax->map2);
|
mem = platform_get_resource(pdev, IORESOURCE_MEM, 1);
|
release_mem_region(mem->start, resource_size(mem));
|
}
|
|
platform_set_drvdata(pdev, NULL);
|
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 ei_device *ei_local;
|
struct ax_device *ax;
|
struct resource *irq, *mem, *mem2;
|
unsigned long mem_size, mem2_size = 0;
|
int ret = 0;
|
|
dev = ax__alloc_ei_netdev(sizeof(struct ax_device));
|
if (dev == NULL)
|
return -ENOMEM;
|
|
/* ok, let's setup our device */
|
SET_NETDEV_DEV(dev, &pdev->dev);
|
ei_local = netdev_priv(dev);
|
ax = to_ax_dev(dev);
|
|
ax->plat = dev_get_platdata(&pdev->dev);
|
platform_set_drvdata(pdev, dev);
|
|
ei_local->rxcr_base = ax->plat->rcr_val;
|
|
/* find the platform resources */
|
irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
|
if (!irq) {
|
dev_err(&pdev->dev, "no IRQ specified\n");
|
ret = -ENXIO;
|
goto exit_mem;
|
}
|
|
dev->irq = irq->start;
|
ax->irqflags = irq->flags & IRQF_TRIGGER_MASK;
|
|
if (irq->flags & IORESOURCE_IRQ_SHAREABLE)
|
ax->irqflags |= IRQF_SHARED;
|
|
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
if (!mem) {
|
dev_err(&pdev->dev, "no MEM specified\n");
|
ret = -ENXIO;
|
goto exit_mem;
|
}
|
|
mem_size = resource_size(mem);
|
|
/*
|
* setup the register offsets from either the platform data or
|
* by using the size of the resource provided
|
*/
|
if (ax->plat->reg_offsets)
|
ei_local->reg_offset = ax->plat->reg_offsets;
|
else {
|
ei_local->reg_offset = ax->reg_offsets;
|
for (ret = 0; ret < 0x18; ret++)
|
ax->reg_offsets[ret] = (mem_size / 0x18) * ret;
|
}
|
|
if (!request_mem_region(mem->start, mem_size, pdev->name)) {
|
dev_err(&pdev->dev, "cannot reserve registers\n");
|
ret = -ENXIO;
|
goto exit_mem;
|
}
|
|
ei_local->mem = ioremap(mem->start, mem_size);
|
dev->base_addr = (unsigned long)ei_local->mem;
|
|
if (ei_local->mem == NULL) {
|
dev_err(&pdev->dev, "Cannot ioremap area %pR\n", mem);
|
|
ret = -ENXIO;
|
goto exit_req;
|
}
|
|
/* look for reset area */
|
mem2 = platform_get_resource(pdev, IORESOURCE_MEM, 1);
|
if (!mem2) {
|
if (!ax->plat->reg_offsets) {
|
for (ret = 0; ret < 0x20; ret++)
|
ax->reg_offsets[ret] = (mem_size / 0x20) * ret;
|
}
|
} else {
|
mem2_size = resource_size(mem2);
|
|
if (!request_mem_region(mem2->start, mem2_size, pdev->name)) {
|
dev_err(&pdev->dev, "cannot reserve registers\n");
|
ret = -ENXIO;
|
goto exit_mem1;
|
}
|
|
ax->map2 = ioremap(mem2->start, mem2_size);
|
if (!ax->map2) {
|
dev_err(&pdev->dev, "cannot map reset register\n");
|
ret = -ENXIO;
|
goto exit_mem2;
|
}
|
|
ei_local->reg_offset[0x1f] = ax->map2 - ei_local->mem;
|
}
|
|
/* got resources, now initialise and register device */
|
ret = ax_init_dev(dev);
|
if (!ret)
|
return 0;
|
|
if (!ax->map2)
|
goto exit_mem1;
|
|
iounmap(ax->map2);
|
|
exit_mem2:
|
if (mem2)
|
release_mem_region(mem2->start, mem2_size);
|
|
exit_mem1:
|
iounmap(ei_local->mem);
|
|
exit_req:
|
release_mem_region(mem->start, mem_size);
|
|
exit_mem:
|
platform_set_drvdata(pdev, NULL);
|
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",
|
},
|
.probe = ax_probe,
|
.remove = ax_remove,
|
.suspend = ax_suspend,
|
.resume = ax_resume,
|
};
|
|
module_platform_driver(axdrv);
|
|
MODULE_DESCRIPTION("AX88796 10/100 Ethernet platform driver");
|
MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
|
MODULE_LICENSE("GPL v2");
|
MODULE_ALIAS("platform:ax88796");
|
