/* drivers/net/ax88796.c * * Copyright 2005,2007 Simtec Electronics * Ben Dooks <ben@simtec.co.uk> * * Asix AX88796 10/100 Ethernet controller support * Based on ne.c, by Donald Becker, et-al. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/errno.h> #include <linux/isapnp.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/platform_device.h> #include <linux/delay.h> #include <linux/timer.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/ethtool.h> #include <linux/mii.h> #include <linux/eeprom_93cx6.h> #include <net/ax88796.h> #include <asm/system.h> #include <asm/io.h> static int phy_debug = 0; /* Rename the lib8390.c functions to show that they are in this driver */ #define __ei_open ax_ei_open #define __ei_close ax_ei_close #define __ei_poll ax_ei_poll #define __ei_tx_timeout ax_ei_tx_timeout #define __ei_interrupt ax_ei_interrupt #define ____alloc_ei_netdev ax__alloc_ei_netdev #define __NS8390_init ax_NS8390_init /* force unsigned long back to 'void __iomem *' */ #define ax_convert_addr(_a) ((void __force __iomem *)(_a)) #define ei_inb(_a) readb(ax_convert_addr(_a)) #define ei_outb(_v, _a) writeb(_v, ax_convert_addr(_a)) #define ei_inb_p(_a) ei_inb(_a) #define ei_outb_p(_v, _a) ei_outb(_v, _a) /* define EI_SHIFT() to take into account our register offsets */ #define EI_SHIFT(x) (ei_local->reg_offset[(x)]) /* Ensure we have our RCR base value */ #define AX88796_PLATFORM static unsigned char version[] = "ax88796.c: Copyright 2005,2007 Simtec Electronics\n"; #include "lib8390.c" #define DRV_NAME "ax88796" #define DRV_VERSION "1.00" /* from ne.c */ #define NE_CMD EI_SHIFT(0x00) #define NE_RESET EI_SHIFT(0x1f) #define NE_DATAPORT EI_SHIFT(0x10) #define NE1SM_START_PG 0x20 /* First page of TX buffer */ #define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */ #define NESM_START_PG 0x40 /* First page of TX buffer */ #define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */ /* device private data */ struct ax_device { struct timer_list mii_timer; spinlock_t mii_lock; struct mii_if_info mii; u32 msg_enable; void __iomem *map2; struct platform_device *dev; struct resource *mem; struct resource *mem2; struct ax_plat_data *plat; unsigned char running; unsigned char resume_open; u32 reg_offsets[0x20]; }; static inline struct ax_device *to_ax_dev(struct net_device *dev) { struct ei_device *ei_local = netdev_priv(dev); return (struct ax_device *)(ei_local+1); } /* ax_initial_check * * do an initial probe for the card to check wether it exists * and is functional */ static int ax_initial_check(struct net_device *dev) { struct ei_device *ei_local = netdev_priv(dev); void __iomem *ioaddr = ei_local->mem; int reg0; int regd; reg0 = ei_inb(ioaddr); if (reg0 == 0xFF) return -ENODEV; ei_outb(E8390_NODMA+E8390_PAGE1+E8390_STOP, ioaddr + E8390_CMD); regd = ei_inb(ioaddr + 0x0d); ei_outb(0xff, ioaddr + 0x0d); ei_outb(E8390_NODMA+E8390_PAGE0, ioaddr + E8390_CMD); ei_inb(ioaddr + EN0_COUNTER0); /* Clear the counter by reading. */ if (ei_inb(ioaddr + EN0_COUNTER0) != 0) { ei_outb(reg0, ioaddr); ei_outb(regd, ioaddr + 0x0d); /* Restore the old values. */ return -ENODEV; } return 0; } /* Hard reset the card. This used to pause for the same period that a 8390 reset command required, but that shouldn't be necessary. */ static void ax_reset_8390(struct net_device *dev) { struct ei_device *ei_local = netdev_priv(dev); unsigned long reset_start_time = jiffies; void __iomem *addr = (void __iomem *)dev->base_addr; if (ei_debug > 1) printk(KERN_DEBUG "resetting the 8390 t=%ld...", jiffies); ei_outb(ei_inb(addr + NE_RESET), addr + NE_RESET); ei_status.txing = 0; ei_status.dmaing = 0; /* This check _should_not_ be necessary, omit eventually. */ while ((ei_inb(addr + EN0_ISR) & ENISR_RESET) == 0) { if (jiffies - reset_start_time > 2*HZ/100) { printk(KERN_WARNING "%s: %s did not complete.\n", __FUNCTION__, dev->name); break; } } ei_outb(ENISR_RESET, addr + EN0_ISR); /* Ack intr. */ } static void ax_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page) { struct ei_device *ei_local = netdev_priv(dev); void __iomem *nic_base = ei_local->mem; /* This *shouldn't* happen. If it does, it's the last thing you'll see */ if (ei_status.dmaing) { printk(KERN_EMERG "%s: DMAing conflict in %s [DMAstat:%d][irqlock:%d].\n", dev->name, __FUNCTION__, ei_status.dmaing, ei_status.irqlock); return; } ei_status.dmaing |= 0x01; ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); ei_outb(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); ei_outb(0, nic_base + EN0_RCNTHI); ei_outb(0, nic_base + EN0_RSARLO); /* On page boundary */ ei_outb(ring_page, nic_base + EN0_RSARHI); ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); if (ei_status.word16) readsw(nic_base + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1); else readsb(nic_base + NE_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)); ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ ei_status.dmaing &= ~0x01; le16_to_cpus(&hdr->count); } /* Block input and output, similar to the Crynwr packet driver. If you are porting to a new ethercard, look at the packet driver source for hints. The NEx000 doesn't share the on-board packet memory -- you have to put the packet out through the "remote DMA" dataport using ei_outb. */ static void ax_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset) { struct ei_device *ei_local = netdev_priv(dev); void __iomem *nic_base = ei_local->mem; char *buf = skb->data; if (ei_status.dmaing) { printk(KERN_EMERG "%s: DMAing conflict in ax_block_input " "[DMAstat:%d][irqlock:%d].\n", dev->name, ei_status.dmaing, ei_status.irqlock); return; } ei_status.dmaing |= 0x01; ei_outb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD); ei_outb(count & 0xff, nic_base + EN0_RCNTLO); ei_outb(count >> 8, nic_base + EN0_RCNTHI); ei_outb(ring_offset & 0xff, nic_base + EN0_RSARLO); ei_outb(ring_offset >> 8, nic_base + EN0_RSARHI); ei_outb(E8390_RREAD+E8390_START, nic_base + NE_CMD); if (ei_status.word16) { readsw(nic_base + NE_DATAPORT, buf, count >> 1); if (count & 0x01) buf[count-1] = ei_inb(nic_base + NE_DATAPORT); } else { readsb(nic_base + NE_DATAPORT, buf, count); } ei_status.dmaing &= ~1; } static void ax_block_output(struct net_device *dev, int count, const unsigned char *buf, const int start_page) { struct ei_device *ei_local = netdev_priv(dev); void __iomem *nic_base = ei_local->mem; unsigned long dma_start; /* Round the count up for word writes. Do we need to do this? What effect will an odd byte count have on the 8390? I should check someday. */ if (ei_status.word16 && (count & 0x01)) count++; /* This *shouldn't* happen. If it does, it's the last thing you'll see */ if (ei_status.dmaing) { printk(KERN_EMERG "%s: DMAing conflict in %s." "[DMAstat:%d][irqlock:%d]\n", dev->name, __FUNCTION__, ei_status.dmaing, ei_status.irqlock); return; } ei_status.dmaing |= 0x01; /* We should already be in page 0, but to be safe... */ ei_outb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD); ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Now the normal output. */ ei_outb(count & 0xff, nic_base + EN0_RCNTLO); ei_outb(count >> 8, nic_base + EN0_RCNTHI); ei_outb(0x00, nic_base + EN0_RSARLO); ei_outb(start_page, nic_base + EN0_RSARHI); ei_outb(E8390_RWRITE+E8390_START, nic_base + NE_CMD); if (ei_status.word16) { writesw(nic_base + NE_DATAPORT, buf, count>>1); } else { writesb(nic_base + NE_DATAPORT, buf, count); } dma_start = jiffies; while ((ei_inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) { if (jiffies - dma_start > 2*HZ/100) { /* 20ms */ printk(KERN_WARNING "%s: timeout waiting for Tx RDC.\n", dev->name); ax_reset_8390(dev); ax_NS8390_init(dev,1); break; } } ei_outb(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ ei_status.dmaing &= ~0x01; return; } /* definitions for accessing MII/EEPROM interface */ #define AX_MEMR EI_SHIFT(0x14) #define AX_MEMR_MDC (1<<0) #define AX_MEMR_MDIR (1<<1) #define AX_MEMR_MDI (1<<2) #define AX_MEMR_MDO (1<<3) #define AX_MEMR_EECS (1<<4) #define AX_MEMR_EEI (1<<5) #define AX_MEMR_EEO (1<<6) #define AX_MEMR_EECLK (1<<7) /* ax_mii_ei_outbits * * write the specified set of bits to the phy */ static void ax_mii_ei_outbits(struct net_device *dev, unsigned int bits, int len) { struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); void __iomem *memr_addr = (void __iomem *)dev->base_addr + AX_MEMR; unsigned int memr; /* clock low, data to output mode */ memr = ei_inb(memr_addr); memr &= ~(AX_MEMR_MDC | AX_MEMR_MDIR); ei_outb(memr, memr_addr); for (len--; len >= 0; len--) { if (bits & (1 << len)) memr |= AX_MEMR_MDO; else memr &= ~AX_MEMR_MDO; ei_outb(memr, memr_addr); /* clock high */ ei_outb(memr | AX_MEMR_MDC, memr_addr); udelay(1); /* clock low */ ei_outb(memr, memr_addr); } /* leaves the clock line low, mdir input */ memr |= AX_MEMR_MDIR; ei_outb(memr, (void __iomem *)dev->base_addr + AX_MEMR); } /* ax_phy_ei_inbits * * read a specified number of bits from the phy */ static unsigned int ax_phy_ei_inbits(struct net_device *dev, int no) { struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); void __iomem *memr_addr = (void __iomem *)dev->base_addr + AX_MEMR; unsigned int memr; unsigned int result = 0; /* clock low, data to input mode */ memr = ei_inb(memr_addr); memr &= ~AX_MEMR_MDC; memr |= AX_MEMR_MDIR; ei_outb(memr, memr_addr); for (no--; no >= 0; no--) { ei_outb(memr | AX_MEMR_MDC, memr_addr); udelay(1); if (ei_inb(memr_addr) & AX_MEMR_MDI) result |= (1<<no); ei_outb(memr, memr_addr); } return result; } /* ax_phy_issueaddr * * use the low level bit shifting routines to send the address * and command to the specified phy */ static void ax_phy_issueaddr(struct net_device *dev, int phy_addr, int reg, int opc) { if (phy_debug) pr_debug("%s: dev %p, %04x, %04x, %d\n", __FUNCTION__, dev, phy_addr, reg, opc); ax_mii_ei_outbits(dev, 0x3f, 6); /* pre-amble */ ax_mii_ei_outbits(dev, 1, 2); /* frame-start */ ax_mii_ei_outbits(dev, opc, 2); /* op code */ ax_mii_ei_outbits(dev, phy_addr, 5); /* phy address */ ax_mii_ei_outbits(dev, reg, 5); /* reg address */ } static int ax_phy_read(struct net_device *dev, int phy_addr, int reg) { struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); unsigned long flags; unsigned int result; spin_lock_irqsave(&ei_local->page_lock, flags); ax_phy_issueaddr(dev, phy_addr, reg, 2); result = ax_phy_ei_inbits(dev, 17); result &= ~(3<<16); spin_unlock_irqrestore(&ei_local->page_lock, flags); if (phy_debug) pr_debug("%s: %04x.%04x => read %04x\n", __FUNCTION__, phy_addr, reg, result); return result; } static void ax_phy_write(struct net_device *dev, int phy_addr, int reg, int value) { struct ei_device *ei = (struct ei_device *) netdev_priv(dev); unsigned long flags; printk(KERN_DEBUG "%s: %p, %04x, %04x %04x\n", __FUNCTION__, dev, phy_addr, reg, value); spin_lock_irqsave(&ei->page_lock, flags); ax_phy_issueaddr(dev, phy_addr, reg, 1); ax_mii_ei_outbits(dev, 2, 2); /* send TA */ ax_mii_ei_outbits(dev, value, 16); spin_unlock_irqrestore(&ei->page_lock, flags); } static void ax_mii_expiry(unsigned long data) { struct net_device *dev = (struct net_device *)data; struct ax_device *ax = to_ax_dev(dev); unsigned long flags; spin_lock_irqsave(&ax->mii_lock, flags); mii_check_media(&ax->mii, netif_msg_link(ax), 0); spin_unlock_irqrestore(&ax->mii_lock, flags); if (ax->running) { ax->mii_timer.expires = jiffies + HZ*2; add_timer(&ax->mii_timer); } } static int ax_open(struct net_device *dev) { struct ax_device *ax = to_ax_dev(dev); struct ei_device *ei_local = netdev_priv(dev); int ret; dev_dbg(&ax->dev->dev, "%s: open\n", dev->name); ret = request_irq(dev->irq, ax_ei_interrupt, 0, dev->name, dev); if (ret) return ret; ret = ax_ei_open(dev); if (ret) return ret; /* turn the phy on (if turned off) */ ei_outb(ax->plat->gpoc_val, ei_local->mem + EI_SHIFT(0x17)); ax->running = 1; /* start the MII timer */ init_timer(&ax->mii_timer); ax->mii_timer.expires = jiffies+1; ax->mii_timer.data = (unsigned long) dev; ax->mii_timer.function = ax_mii_expiry; add_timer(&ax->mii_timer); return 0; } static int ax_close(struct net_device *dev) { struct ax_device *ax = to_ax_dev(dev); struct ei_device *ei_local = netdev_priv(dev); dev_dbg(&ax->dev->dev, "%s: close\n", dev->name); /* turn the phy off */ ei_outb(ax->plat->gpoc_val | (1<<6), ei_local->mem + EI_SHIFT(0x17)); ax->running = 0; wmb(); del_timer_sync(&ax->mii_timer); ax_ei_close(dev); free_irq(dev->irq, dev); return 0; } static int ax_ioctl(struct net_device *dev, struct ifreq *req, int cmd) { struct ax_device *ax = to_ax_dev(dev); unsigned long flags; int rc; if (!netif_running(dev)) return -EINVAL; spin_lock_irqsave(&ax->mii_lock, flags); rc = generic_mii_ioctl(&ax->mii, if_mii(req), cmd, NULL); spin_unlock_irqrestore(&ax->mii_lock, flags); return rc; } /* ethtool ops */ static void ax_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) { struct ax_device *ax = to_ax_dev(dev); strcpy(info->driver, DRV_NAME); strcpy(info->version, DRV_VERSION); strcpy(info->bus_info, ax->dev->name); } static int ax_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) { struct ax_device *ax = to_ax_dev(dev); unsigned long flags; spin_lock_irqsave(&ax->mii_lock, flags); mii_ethtool_gset(&ax->mii, cmd); spin_lock_irqsave(&ax->mii_lock, flags); return 0; } static int ax_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) { struct ax_device *ax = to_ax_dev(dev); unsigned long flags; int rc; spin_lock_irqsave(&ax->mii_lock, flags); rc = mii_ethtool_sset(&ax->mii, cmd); spin_lock_irqsave(&ax->mii_lock, flags); return rc; } static int ax_nway_reset(struct net_device *dev) { struct ax_device *ax = to_ax_dev(dev); return mii_nway_restart(&ax->mii); } static u32 ax_get_link(struct net_device *dev) { struct ax_device *ax = to_ax_dev(dev); return mii_link_ok(&ax->mii); } static const struct ethtool_ops ax_ethtool_ops = { .get_drvinfo = ax_get_drvinfo, .get_settings = ax_get_settings, .set_settings = ax_set_settings, .nway_reset = ax_nway_reset, .get_link = ax_get_link, }; #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 /* setup code */ static void ax_initial_setup(struct net_device *dev, struct ei_device *ei_local) { void __iomem *ioaddr = ei_local->mem; struct ax_device *ax = to_ax_dev(dev); /* Select page 0*/ ei_outb(E8390_NODMA+E8390_PAGE0+E8390_STOP, ioaddr + E8390_CMD); /* set to byte access */ ei_outb(ax->plat->dcr_val & ~1, ioaddr + EN0_DCFG); ei_outb(ax->plat->gpoc_val, ioaddr + EI_SHIFT(0x17)); } /* ax_init_dev * * initialise the specified device, taking care to note the MAC * address it may already have (if configured), ensure * the device is ready to be used by lib8390.c and registerd with * the network layer. */ static int ax_init_dev(struct net_device *dev, int first_init) { struct ei_device *ei_local = netdev_priv(dev); struct ax_device *ax = to_ax_dev(dev); void __iomem *ioaddr = ei_local->mem; unsigned int start_page; unsigned int stop_page; int ret; int i; ret = ax_initial_check(dev); if (ret) goto err_out; /* setup goes here */ ax_initial_setup(dev, ei_local); /* read the mac from the card prom if we need it */ if (first_init && ax->plat->flags & AXFLG_HAS_EEPROM) { unsigned char SA_prom[32]; for(i = 0; i < sizeof(SA_prom); i+=2) { SA_prom[i] = ei_inb(ioaddr + NE_DATAPORT); SA_prom[i+1] = ei_inb(ioaddr + NE_DATAPORT); } if (ax->plat->wordlength == 2) for (i = 0; i < 16; i++) SA_prom[i] = SA_prom[i+i]; memcpy(dev->dev_addr, SA_prom, 6); } #ifdef CONFIG_AX88796_93CX6 if (first_init && 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 this is the * first time we've initialised */ if (first_init && ax->plat->flags & AXFLG_MAC_FROMDEV) { ei_outb(E8390_NODMA + E8390_PAGE1 + E8390_STOP, ei_local->mem + E8390_CMD); /* 0x61 */ for (i = 0 ; i < ETHER_ADDR_LEN ; i++) dev->dev_addr[i] = ei_inb(ioaddr + EN1_PHYS_SHIFT(i)); } ax_reset_8390(dev); ei_status.name = "AX88796"; ei_status.tx_start_page = start_page; ei_status.stop_page = stop_page; ei_status.word16 = (ax->plat->wordlength == 2); ei_status.rx_start_page = start_page + TX_PAGES; #ifdef PACKETBUF_MEMSIZE /* Allow the packet buffer size to be overridden by know-it-alls. */ ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE; #endif ei_status.reset_8390 = &ax_reset_8390; ei_status.block_input = &ax_block_input; ei_status.block_output = &ax_block_output; ei_status.get_8390_hdr = &ax_get_8390_hdr; ei_status.priv = 0; dev->open = ax_open; dev->stop = ax_close; dev->do_ioctl = ax_ioctl; dev->ethtool_ops = &ax_ethtool_ops; ax->msg_enable = NETIF_MSG_LINK; ax->mii.phy_id_mask = 0x1f; ax->mii.reg_num_mask = 0x1f; ax->mii.phy_id = 0x10; /* onboard phy */ ax->mii.force_media = 0; ax->mii.full_duplex = 0; ax->mii.mdio_read = ax_phy_read; ax->mii.mdio_write = ax_phy_write; ax->mii.dev = dev; #ifdef CONFIG_NET_POLL_CONTROLLER dev->poll_controller = ax_ei_poll; #endif ax_NS8390_init(dev, 0); if (first_init) { printk("AX88796: %dbit, irq %d, %lx, MAC: ", ei_status.word16 ? 16:8, dev->irq, dev->base_addr); for (i = 0; i < ETHER_ADDR_LEN; i++) printk("%2.2x%c", dev->dev_addr[i], (i < (ETHER_ADDR_LEN-1) ? ':' : ' ')); printk("\n"); } ret = register_netdev(dev); if (ret) goto out_irq; return 0; out_irq: /* cleanup irq */ free_irq(dev->irq, dev); err_out: return ret; } static int ax_remove(struct platform_device *_dev) { struct net_device *dev = platform_get_drvdata(_dev); struct ax_device *ax; ax = to_ax_dev(dev); unregister_netdev(dev); free_irq(dev->irq, dev); iounmap(ei_status.mem); release_resource(ax->mem); kfree(ax->mem); if (ax->map2) { iounmap(ax->map2); release_resource(ax->mem2); kfree(ax->mem2); } free_netdev(dev); return 0; } /* ax_probe * * This is the entry point when the platform device system uses to * notify us of a new device to attach to. Allocate memory, find * the resources and information passed, and map the necessary registers. */ static int ax_probe(struct platform_device *pdev) { struct net_device *dev; struct ax_device *ax; struct resource *res; size_t size; int ret; dev = ax__alloc_ei_netdev(sizeof(struct ax_device)); if (dev == NULL) return -ENOMEM; /* ok, let's setup our device */ ax = to_ax_dev(dev); memset(ax, 0, sizeof(struct ax_device)); spin_lock_init(&ax->mii_lock); ax->dev = pdev; ax->plat = pdev->dev.platform_data; platform_set_drvdata(pdev, dev); ei_status.rxcr_base = ax->plat->rcr_val; /* find the platform resources */ dev->irq = platform_get_irq(pdev, 0); if (dev->irq < 0) { dev_err(&pdev->dev, "no IRQ specified\n"); ret = -ENXIO; goto exit_mem; } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (res == NULL) { dev_err(&pdev->dev, "no MEM specified\n"); ret = -ENXIO; goto exit_mem; } size = (res->end - res->start) + 1; /* setup the register offsets from either the platform data * or by using the size of the resource provided */ if (ax->plat->reg_offsets) ei_status.reg_offset = ax->plat->reg_offsets; else { ei_status.reg_offset = ax->reg_offsets; for (ret = 0; ret < 0x18; ret++) ax->reg_offsets[ret] = (size / 0x18) * ret; } ax->mem = request_mem_region(res->start, size, pdev->name); if (ax->mem == NULL) { dev_err(&pdev->dev, "cannot reserve registers\n"); ret = -ENXIO; goto exit_mem; } ei_status.mem = ioremap(res->start, size); dev->base_addr = (unsigned long)ei_status.mem; if (ei_status.mem == NULL) { dev_err(&pdev->dev, "Cannot ioremap area (%08llx,%08llx)\n", (unsigned long long)res->start, (unsigned long long)res->end); ret = -ENXIO; goto exit_req; } /* look for reset area */ res = platform_get_resource(pdev, IORESOURCE_MEM, 1); if (res == NULL) { if (!ax->plat->reg_offsets) { for (ret = 0; ret < 0x20; ret++) ax->reg_offsets[ret] = (size / 0x20) * ret; } ax->map2 = NULL; } else { size = (res->end - res->start) + 1; ax->mem2 = request_mem_region(res->start, size, pdev->name); if (ax->mem == NULL) { dev_err(&pdev->dev, "cannot reserve registers\n"); ret = -ENXIO; goto exit_mem1; } ax->map2 = ioremap(res->start, size); if (ax->map2 == NULL) { dev_err(&pdev->dev, "cannot map reset register\n"); ret = -ENXIO; goto exit_mem2; } ei_status.reg_offset[0x1f] = ax->map2 - ei_status.mem; } /* got resources, now initialise and register device */ ret = ax_init_dev(dev, 1); if (!ret) return 0; if (ax->map2 == NULL) goto exit_mem1; iounmap(ax->map2); exit_mem2: release_resource(ax->mem2); kfree(ax->mem2); exit_mem1: iounmap(ei_status.mem); exit_req: release_resource(ax->mem); kfree(ax->mem); exit_mem: free_netdev(dev); return ret; } /* suspend and resume */ #ifdef CONFIG_PM static int ax_suspend(struct platform_device *dev, pm_message_t state) { struct net_device *ndev = platform_get_drvdata(dev); struct ax_device *ax = to_ax_dev(ndev); ax->resume_open = ax->running; netif_device_detach(ndev); ax_close(ndev); return 0; } static int ax_resume(struct platform_device *pdev) { struct net_device *ndev = platform_get_drvdata(pdev); struct ax_device *ax = to_ax_dev(ndev); ax_initial_setup(ndev, netdev_priv(ndev)); ax_NS8390_init(ndev, ax->resume_open); netif_device_attach(ndev); if (ax->resume_open) ax_open(ndev); return 0; } #else #define ax_suspend NULL #define ax_resume NULL #endif static struct platform_driver axdrv = { .driver = { .name = "ax88796", .owner = THIS_MODULE, }, .probe = ax_probe, .remove = ax_remove, .suspend = ax_suspend, .resume = ax_resume, }; static int __init axdrv_init(void) { return platform_driver_register(&axdrv); } static void __exit axdrv_exit(void) { platform_driver_unregister(&axdrv); } module_init(axdrv_init); module_exit(axdrv_exit); MODULE_DESCRIPTION("AX88796 10/100 Ethernet platform driver"); MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); MODULE_LICENSE("GPL v2");