| /* drivers/net/ethernet/8390/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/io.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/mdio-bitbang.h> |
| #include <linux/phy.h> |
| #include <linux/eeprom_93cx6.h> |
| #include <linux/slab.h> |
| |
| #include <net/ax88796.h> |
| |
| |
| /* 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_start_xmit ax_ei_start_xmit |
| #define __ei_tx_timeout ax_ei_tx_timeout |
| #define __ei_get_stats ax_ei_get_stats |
| #define __ei_set_multicast_list ax_ei_set_multicast_list |
| #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 */ |
| |
| #define AX_GPOC_PPDSET BIT(6) |
| |
| /* device private data */ |
| |
| struct ax_device { |
| struct mii_bus *mii_bus; |
| struct mdiobb_ctrl bb_ctrl; |
| struct phy_device *phy_dev; |
| void __iomem *addr_memr; |
| u8 reg_memr; |
| int link; |
| int speed; |
| int duplex; |
| |
| void __iomem *map2; |
| const struct ax_plat_data *plat; |
| |
| unsigned char running; |
| unsigned char resume_open; |
| unsigned int irqflags; |
| |
| 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) |
| netdev_dbg(dev, "resetting the 8390 t=%ld\n", jiffies); |
| |
| ei_outb(ei_inb(addr + NE_RESET), addr + NE_RESET); |
| |
| ei_local->txing = 0; |
| ei_local->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) { |
| netdev_warn(dev, "%s: did not complete.\n", __func__); |
| 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_local->dmaing) { |
| netdev_err(dev, "DMAing conflict in %s " |
| "[DMAstat:%d][irqlock:%d].\n", |
| __func__, |
| ei_local->dmaing, ei_local->irqlock); |
| return; |
| } |
| |
| ei_local->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_local->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_local->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_local->dmaing) { |
| netdev_err(dev, |
| "DMAing conflict in %s " |
| "[DMAstat:%d][irqlock:%d].\n", |
| __func__, |
| ei_local->dmaing, ei_local->irqlock); |
| return; |
| } |
| |
| ei_local->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_local->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_local->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_local->word16 && (count & 0x01)) |
| count++; |
| |
| /* This *shouldn't* happen. If it does, it's the last thing you'll see */ |
| if (ei_local->dmaing) { |
| netdev_err(dev, "DMAing conflict in %s." |
| "[DMAstat:%d][irqlock:%d]\n", |
| __func__, |
| ei_local->dmaing, ei_local->irqlock); |
| return; |
| } |
| |
| ei_local->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_local->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 */ |
| netdev_warn(dev, "timeout waiting for Tx RDC.\n"); |
| ax_reset_8390(dev); |
| ax_NS8390_init(dev, 1); |
| break; |
| } |
| } |
| |
| ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ |
| ei_local->dmaing &= ~0x01; |
| } |
| |
| /* definitions for accessing MII/EEPROM interface */ |
| |
| #define AX_MEMR EI_SHIFT(0x14) |
| #define AX_MEMR_MDC BIT(0) |
| #define AX_MEMR_MDIR BIT(1) |
| #define AX_MEMR_MDI BIT(2) |
| #define AX_MEMR_MDO BIT(3) |
| #define AX_MEMR_EECS BIT(4) |
| #define AX_MEMR_EEI BIT(5) |
| #define AX_MEMR_EEO BIT(6) |
| #define AX_MEMR_EECLK BIT(7) |
| |
| static void ax_handle_link_change(struct net_device *dev) |
| { |
| struct ax_device *ax = to_ax_dev(dev); |
| struct phy_device *phy_dev = ax->phy_dev; |
| int status_change = 0; |
| |
| 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, 0, |
| PHY_INTERFACE_MODE_MII); |
| if (ret) { |
| netdev_err(dev, "Could not attach to PHY\n"); |
| return ret; |
| } |
| |
| /* mask with MAC supported features */ |
| phy_dev->supported &= PHY_BASIC_FEATURES; |
| phy_dev->advertising = phy_dev->supported; |
| |
| ax->phy_dev = phy_dev; |
| |
| netdev_info(dev, "PHY driver [%s] (mii_bus:phy_addr=%s, irq=%d)\n", |
| phy_dev->drv->name, dev_name(&phy_dev->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 int ax_open(struct net_device *dev) |
| { |
| struct ax_device *ax = to_ax_dev(dev); |
| int ret; |
| |
| netdev_dbg(dev, "open\n"); |
| |
| 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(ax->phy_dev); |
| |
| ret = ax_ei_open(dev); |
| if (ret) |
| goto failed_ax_ei_open; |
| |
| ax->running = 1; |
| |
| return 0; |
| |
| failed_ax_ei_open: |
| phy_disconnect(ax->phy_dev); |
| failed_mii_probe: |
| ax_phy_switch(dev, 0); |
| free_irq(dev->irq, dev); |
| failed_request_irq: |
| 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(ax->phy_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); |
| struct phy_device *phy_dev = ax->phy_dev; |
| |
| 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); |
| |
| strcpy(info->driver, DRV_NAME); |
| strcpy(info->version, DRV_VERSION); |
| strcpy(info->bus_info, pdev->name); |
| } |
| |
| static int ax_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| { |
| struct ax_device *ax = to_ax_dev(dev); |
| struct phy_device *phy_dev = ax->phy_dev; |
| |
| if (!phy_dev) |
| return -ENODEV; |
| |
| return phy_ethtool_gset(phy_dev, cmd); |
| } |
| |
| static int ax_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
| { |
| struct ax_device *ax = to_ax_dev(dev); |
| struct phy_device *phy_dev = ax->phy_dev; |
| |
| if (!phy_dev) |
| return -ENODEV; |
| |
| return phy_ethtool_sset(phy_dev, cmd); |
| } |
| |
| static const struct ethtool_ops ax_ethtool_ops = { |
| .get_drvinfo = ax_get_drvinfo, |
| .get_settings = ax_get_settings, |
| .set_settings = ax_set_settings, |
| .get_link = ethtool_op_get_link, |
| }; |
| |
| #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, |
| .ndo_change_mtu = eth_change_mtu, |
| #ifdef CONFIG_NET_POLL_CONTROLLER |
| .ndo_poll_controller = ax_ei_poll, |
| #endif |
| }; |
| |
| 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 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, |
| }; |
| |
| /* setup code */ |
| |
| 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, i; |
| |
| 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); |
| |
| ax->mii_bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL); |
| if (!ax->mii_bus->irq) { |
| err = -ENOMEM; |
| goto out_free_mdio_bitbang; |
| } |
| |
| for (i = 0; i < PHY_MAX_ADDR; i++) |
| ax->mii_bus->irq[i] = PHY_POLL; |
| |
| err = mdiobus_register(ax->mii_bus); |
| if (err) |
| goto out_free_irq; |
| |
| return 0; |
| |
| out_free_irq: |
| kfree(ax->mii_bus->irq); |
| out_free_mdio_bitbang: |
| free_mdio_bitbang(ax->mii_bus); |
| out: |
| return err; |
| } |
| |
| 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]; |
| |
| 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); |
| } |
| |
| #ifdef CONFIG_AX88796_93CX6 |
| if (ax->plat->flags & AXFLG_HAS_93CX6) { |
| unsigned char mac_addr[6]; |
| 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, 6); |
| } |
| #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); |
| |
| 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; |
| ei_local->block_input = &ax_block_input; |
| 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; |
| |
| ret = ax_mii_init(dev); |
| if (ret) |
| goto out_irq; |
| |
| ax_NS8390_init(dev, 0); |
| |
| ret = register_netdev(dev); |
| if (ret) |
| goto out_irq; |
| |
| 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; |
| |
| out_irq: |
| /* cleanup irq */ |
| free_irq(dev->irq, dev); |
| 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); |
| free_irq(dev->irq, 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)); |
| } |
| |
| 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; |
| resource_size_t 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 = pdev->dev.platform_data; |
| 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; |
| |
| 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: |
| release_mem_region(mem2->start, mem2_size); |
| |
| exit_mem1: |
| iounmap(ei_local->mem); |
| |
| exit_req: |
| release_mem_region(mem->start, mem_size); |
| |
| 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, |
| }; |
| |
| 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"); |