diff options
Diffstat (limited to 'drivers/net/ethernet/8390/ax88796.c')
| -rw-r--r-- | drivers/net/ethernet/8390/ax88796.c | 1024 |
1 files changed, 1024 insertions, 0 deletions
diff --git a/drivers/net/ethernet/8390/ax88796.c b/drivers/net/ethernet/8390/ax88796.c new file mode 100644 index 000000000..af603256b --- /dev/null +++ b/drivers/net/ethernet/8390/ax88796.c @@ -0,0 +1,1024 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* 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. + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/isapnp.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; + 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); +} + +void ax_NS8390_reinit(struct net_device *dev) +{ + ax_NS8390_init(dev, 1); +} + +EXPORT_SYMBOL_GPL(ax_NS8390_reinit); + +/* + * ax_initial_check + * + * do an initial probe for the card to check whether 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; + + netif_dbg(ei_local, hw, 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 (time_after(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. */ +} + +/* Wrapper for __ei_interrupt for platforms that have a platform-specific + * way to find out whether the interrupt request might be caused by + * the ax88796 chip. + */ +static irqreturn_t ax_ei_interrupt_filtered(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + struct ax_device *ax = to_ax_dev(dev); + struct platform_device *pdev = to_platform_device(dev->dev.parent); + + if (!ax->plat->check_irq(pdev)) + return IRQ_NONE; + + return ax_ei_interrupt(irq, dev_id); +} + +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) + ioread16_rep(nic_base + NE_DATAPORT, hdr, + sizeof(struct e8390_pkt_hdr) >> 1); + else + ioread8_rep(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) { + ioread16_rep(nic_base + NE_DATAPORT, buf, count >> 1); + if (count & 0x01) + buf[count-1] = ei_inb(nic_base + NE_DATAPORT); + + } else { + ioread8_rep(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) + iowrite16_rep(nic_base + NE_DATAPORT, buf, count >> 1); + else + iowrite8_rep(nic_base + NE_DATAPORT, buf, count); + + dma_start = jiffies; + + while ((ei_inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) { + if (time_after(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 = dev->phydev; + 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, + 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); + + strscpy(info->driver, DRV_NAME, sizeof(info->driver)); + strscpy(info->version, DRV_VERSION, sizeof(info->version)); + strscpy(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_eth_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]; + + eth_hw_addr_set(dev, SA_prom); + } + +#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); + + eth_hw_addr_set(dev, mac_addr); + } +#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) { + u8 addr[ETH_ALEN]; + + ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, + ei_local->mem + E8390_CMD); /* 0x61 */ + for (i = 0; i < ETH_ALEN; i++) + addr[i] = ei_inb(ioaddr + EN1_PHYS_SHIFT(i)); + eth_hw_addr_set(dev, addr); + } + + if ((ax->plat->flags & AXFLG_MAC_FROMPLATFORM) && + ax->plat->mac_addr) + eth_hw_addr_set(dev, ax->plat->mac_addr); + + 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"); |