| /*====================================================================== |
| |
| A PCMCIA ethernet driver for Asix AX88190-based cards |
| |
| The Asix AX88190 is a NS8390-derived chipset with a few nasty |
| idiosyncracies that make it very inconvenient to support with a |
| standard 8390 driver. This driver is based on pcnet_cs, with the |
| tweaked 8390 code grafted on the end. Much of what I did was to |
| clean up and update a similar driver supplied by Asix, which was |
| adapted by William Lee, william@asix.com.tw. |
| |
| Copyright (C) 2001 David A. Hinds -- dahinds@users.sourceforge.net |
| |
| axnet_cs.c 1.28 2002/06/29 06:27:37 |
| |
| The network driver code is based on Donald Becker's NE2000 code: |
| |
| Written 1992,1993 by Donald Becker. |
| Copyright 1993 United States Government as represented by the |
| Director, National Security Agency. This software may be used and |
| distributed according to the terms of the GNU General Public License, |
| incorporated herein by reference. |
| Donald Becker may be reached at becker@scyld.com |
| |
| ======================================================================*/ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/ptrace.h> |
| #include <linux/slab.h> |
| #include <linux/string.h> |
| #include <linux/timer.h> |
| #include <linux/delay.h> |
| #include <linux/spinlock.h> |
| #include <linux/ethtool.h> |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/crc32.h> |
| #include <linux/mii.h> |
| #include "../8390.h" |
| |
| #include <pcmcia/cs_types.h> |
| #include <pcmcia/cs.h> |
| #include <pcmcia/cistpl.h> |
| #include <pcmcia/ciscode.h> |
| #include <pcmcia/ds.h> |
| #include <pcmcia/cisreg.h> |
| |
| #include <asm/io.h> |
| #include <asm/system.h> |
| #include <asm/byteorder.h> |
| #include <asm/uaccess.h> |
| |
| #define AXNET_CMD 0x00 |
| #define AXNET_DATAPORT 0x10 /* NatSemi-defined port window offset. */ |
| #define AXNET_RESET 0x1f /* Issue a read to reset, a write to clear. */ |
| #define AXNET_MII_EEP 0x14 /* Offset of MII access port */ |
| #define AXNET_TEST 0x15 /* Offset of TEST Register port */ |
| #define AXNET_GPIO 0x17 /* Offset of General Purpose Register Port */ |
| |
| #define AXNET_START_PG 0x40 /* First page of TX buffer */ |
| #define AXNET_STOP_PG 0x80 /* Last page +1 of RX ring */ |
| |
| #define AXNET_RDC_TIMEOUT 0x02 /* Max wait in jiffies for Tx RDC */ |
| |
| #define IS_AX88190 0x0001 |
| #define IS_AX88790 0x0002 |
| |
| /*====================================================================*/ |
| |
| /* Module parameters */ |
| |
| MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); |
| MODULE_DESCRIPTION("Asix AX88190 PCMCIA ethernet driver"); |
| MODULE_LICENSE("GPL"); |
| |
| |
| /*====================================================================*/ |
| |
| static int axnet_config(struct pcmcia_device *link); |
| static void axnet_release(struct pcmcia_device *link); |
| static int axnet_open(struct net_device *dev); |
| static int axnet_close(struct net_device *dev); |
| static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
| static netdev_tx_t axnet_start_xmit(struct sk_buff *skb, |
| struct net_device *dev); |
| static struct net_device_stats *get_stats(struct net_device *dev); |
| static void set_multicast_list(struct net_device *dev); |
| static void axnet_tx_timeout(struct net_device *dev); |
| static const struct ethtool_ops netdev_ethtool_ops; |
| static irqreturn_t ei_irq_wrapper(int irq, void *dev_id); |
| static void ei_watchdog(u_long arg); |
| static void axnet_reset_8390(struct net_device *dev); |
| |
| static int mdio_read(unsigned int addr, int phy_id, int loc); |
| static void mdio_write(unsigned int addr, int phy_id, int loc, int value); |
| |
| static void get_8390_hdr(struct net_device *, |
| struct e8390_pkt_hdr *, int); |
| static void block_input(struct net_device *dev, int count, |
| struct sk_buff *skb, int ring_offset); |
| static void block_output(struct net_device *dev, int count, |
| const u_char *buf, const int start_page); |
| |
| static void axnet_detach(struct pcmcia_device *p_dev); |
| |
| static void AX88190_init(struct net_device *dev, int startp); |
| static int ax_open(struct net_device *dev); |
| static int ax_close(struct net_device *dev); |
| static irqreturn_t ax_interrupt(int irq, void *dev_id); |
| |
| /*====================================================================*/ |
| |
| typedef struct axnet_dev_t { |
| struct pcmcia_device *p_dev; |
| dev_node_t node; |
| caddr_t base; |
| struct timer_list watchdog; |
| int stale, fast_poll; |
| u_short link_status; |
| u_char duplex_flag; |
| int phy_id; |
| int flags; |
| } axnet_dev_t; |
| |
| static inline axnet_dev_t *PRIV(struct net_device *dev) |
| { |
| void *p = (char *)netdev_priv(dev) + sizeof(struct ei_device); |
| return p; |
| } |
| |
| static const struct net_device_ops axnet_netdev_ops = { |
| .ndo_open = axnet_open, |
| .ndo_stop = axnet_close, |
| .ndo_do_ioctl = axnet_ioctl, |
| .ndo_start_xmit = axnet_start_xmit, |
| .ndo_tx_timeout = axnet_tx_timeout, |
| .ndo_get_stats = get_stats, |
| .ndo_set_multicast_list = set_multicast_list, |
| .ndo_change_mtu = eth_change_mtu, |
| .ndo_set_mac_address = eth_mac_addr, |
| .ndo_validate_addr = eth_validate_addr, |
| }; |
| |
| /*====================================================================== |
| |
| axnet_attach() creates an "instance" of the driver, allocating |
| local data structures for one device. The device is registered |
| with Card Services. |
| |
| ======================================================================*/ |
| |
| static int axnet_probe(struct pcmcia_device *link) |
| { |
| axnet_dev_t *info; |
| struct net_device *dev; |
| struct ei_device *ei_local; |
| |
| dev_dbg(&link->dev, "axnet_attach()\n"); |
| |
| dev = alloc_etherdev(sizeof(struct ei_device) + sizeof(axnet_dev_t)); |
| if (!dev) |
| return -ENOMEM; |
| |
| ei_local = netdev_priv(dev); |
| spin_lock_init(&ei_local->page_lock); |
| |
| info = PRIV(dev); |
| info->p_dev = link; |
| link->priv = dev; |
| link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING; |
| link->irq.IRQInfo1 = IRQ_LEVEL_ID; |
| link->conf.Attributes = CONF_ENABLE_IRQ; |
| link->conf.IntType = INT_MEMORY_AND_IO; |
| |
| dev->netdev_ops = &axnet_netdev_ops; |
| |
| SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops); |
| dev->watchdog_timeo = TX_TIMEOUT; |
| |
| return axnet_config(link); |
| } /* axnet_attach */ |
| |
| /*====================================================================== |
| |
| This deletes a driver "instance". The device is de-registered |
| with Card Services. If it has been released, all local data |
| structures are freed. Otherwise, the structures will be freed |
| when the device is released. |
| |
| ======================================================================*/ |
| |
| static void axnet_detach(struct pcmcia_device *link) |
| { |
| struct net_device *dev = link->priv; |
| |
| dev_dbg(&link->dev, "axnet_detach(0x%p)\n", link); |
| |
| if (link->dev_node) |
| unregister_netdev(dev); |
| |
| axnet_release(link); |
| |
| free_netdev(dev); |
| } /* axnet_detach */ |
| |
| /*====================================================================== |
| |
| This probes for a card's hardware address by reading the PROM. |
| |
| ======================================================================*/ |
| |
| static int get_prom(struct pcmcia_device *link) |
| { |
| struct net_device *dev = link->priv; |
| unsigned int ioaddr = dev->base_addr; |
| int i, j; |
| |
| /* This is based on drivers/net/ne.c */ |
| struct { |
| u_char value, offset; |
| } program_seq[] = { |
| {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/ |
| {0x01, EN0_DCFG}, /* Set word-wide access. */ |
| {0x00, EN0_RCNTLO}, /* Clear the count regs. */ |
| {0x00, EN0_RCNTHI}, |
| {0x00, EN0_IMR}, /* Mask completion irq. */ |
| {0xFF, EN0_ISR}, |
| {E8390_RXOFF|0x40, EN0_RXCR}, /* 0x60 Set to monitor */ |
| {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */ |
| {0x10, EN0_RCNTLO}, |
| {0x00, EN0_RCNTHI}, |
| {0x00, EN0_RSARLO}, /* DMA starting at 0x0400. */ |
| {0x04, EN0_RSARHI}, |
| {E8390_RREAD+E8390_START, E8390_CMD}, |
| }; |
| |
| /* Not much of a test, but the alternatives are messy */ |
| if (link->conf.ConfigBase != 0x03c0) |
| return 0; |
| |
| axnet_reset_8390(dev); |
| mdelay(10); |
| |
| for (i = 0; i < ARRAY_SIZE(program_seq); i++) |
| outb_p(program_seq[i].value, ioaddr + program_seq[i].offset); |
| |
| for (i = 0; i < 6; i += 2) { |
| j = inw(ioaddr + AXNET_DATAPORT); |
| dev->dev_addr[i] = j & 0xff; |
| dev->dev_addr[i+1] = j >> 8; |
| } |
| return 1; |
| } /* get_prom */ |
| |
| /*====================================================================== |
| |
| axnet_config() is scheduled to run after a CARD_INSERTION event |
| is received, to configure the PCMCIA socket, and to make the |
| ethernet device available to the system. |
| |
| ======================================================================*/ |
| |
| static int try_io_port(struct pcmcia_device *link) |
| { |
| int j, ret; |
| if (link->io.NumPorts1 == 32) { |
| link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; |
| if (link->io.NumPorts2 > 0) { |
| /* for master/slave multifunction cards */ |
| link->io.Attributes2 = IO_DATA_PATH_WIDTH_8; |
| link->irq.Attributes = |
| IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED; |
| } |
| } else { |
| /* This should be two 16-port windows */ |
| link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; |
| link->io.Attributes2 = IO_DATA_PATH_WIDTH_16; |
| } |
| if (link->io.BasePort1 == 0) { |
| link->io.IOAddrLines = 16; |
| for (j = 0; j < 0x400; j += 0x20) { |
| link->io.BasePort1 = j ^ 0x300; |
| link->io.BasePort2 = (j ^ 0x300) + 0x10; |
| ret = pcmcia_request_io(link, &link->io); |
| if (ret == 0) |
| return ret; |
| } |
| return ret; |
| } else { |
| return pcmcia_request_io(link, &link->io); |
| } |
| } |
| |
| static int axnet_configcheck(struct pcmcia_device *p_dev, |
| cistpl_cftable_entry_t *cfg, |
| cistpl_cftable_entry_t *dflt, |
| unsigned int vcc, |
| void *priv_data) |
| { |
| int i; |
| cistpl_io_t *io = &cfg->io; |
| |
| if (cfg->index == 0 || cfg->io.nwin == 0) |
| return -ENODEV; |
| |
| p_dev->conf.ConfigIndex = 0x05; |
| /* For multifunction cards, by convention, we configure the |
| network function with window 0, and serial with window 1 */ |
| if (io->nwin > 1) { |
| i = (io->win[1].len > io->win[0].len); |
| p_dev->io.BasePort2 = io->win[1-i].base; |
| p_dev->io.NumPorts2 = io->win[1-i].len; |
| } else { |
| i = p_dev->io.NumPorts2 = 0; |
| } |
| p_dev->io.BasePort1 = io->win[i].base; |
| p_dev->io.NumPorts1 = io->win[i].len; |
| p_dev->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; |
| if (p_dev->io.NumPorts1 + p_dev->io.NumPorts2 >= 32) |
| return try_io_port(p_dev); |
| |
| return -ENODEV; |
| } |
| |
| static int axnet_config(struct pcmcia_device *link) |
| { |
| struct net_device *dev = link->priv; |
| axnet_dev_t *info = PRIV(dev); |
| int i, j, j2, ret; |
| |
| dev_dbg(&link->dev, "axnet_config(0x%p)\n", link); |
| |
| /* don't trust the CIS on this; Linksys got it wrong */ |
| link->conf.Present = 0x63; |
| ret = pcmcia_loop_config(link, axnet_configcheck, NULL); |
| if (ret != 0) |
| goto failed; |
| |
| ret = pcmcia_request_irq(link, &link->irq); |
| if (ret) |
| goto failed; |
| |
| if (link->io.NumPorts2 == 8) { |
| link->conf.Attributes |= CONF_ENABLE_SPKR; |
| link->conf.Status = CCSR_AUDIO_ENA; |
| } |
| |
| ret = pcmcia_request_configuration(link, &link->conf); |
| if (ret) |
| goto failed; |
| |
| dev->irq = link->irq.AssignedIRQ; |
| dev->base_addr = link->io.BasePort1; |
| |
| if (!get_prom(link)) { |
| printk(KERN_NOTICE "axnet_cs: this is not an AX88190 card!\n"); |
| printk(KERN_NOTICE "axnet_cs: use pcnet_cs instead.\n"); |
| goto failed; |
| } |
| |
| ei_status.name = "AX88190"; |
| ei_status.word16 = 1; |
| ei_status.tx_start_page = AXNET_START_PG; |
| ei_status.rx_start_page = AXNET_START_PG + TX_PAGES; |
| ei_status.stop_page = AXNET_STOP_PG; |
| ei_status.reset_8390 = &axnet_reset_8390; |
| ei_status.get_8390_hdr = &get_8390_hdr; |
| ei_status.block_input = &block_input; |
| ei_status.block_output = &block_output; |
| |
| if (inb(dev->base_addr + AXNET_TEST) != 0) |
| info->flags |= IS_AX88790; |
| else |
| info->flags |= IS_AX88190; |
| |
| if (info->flags & IS_AX88790) |
| outb(0x10, dev->base_addr + AXNET_GPIO); /* select Internal PHY */ |
| |
| for (i = 0; i < 32; i++) { |
| j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1); |
| j2 = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 2); |
| if (j == j2) continue; |
| if ((j != 0) && (j != 0xffff)) break; |
| } |
| |
| /* Maybe PHY is in power down mode. (PPD_SET = 1) |
| Bit 2 of CCSR is active low. */ |
| if (i == 32) { |
| conf_reg_t reg = { 0, CS_WRITE, CISREG_CCSR, 0x04 }; |
| pcmcia_access_configuration_register(link, ®); |
| for (i = 0; i < 32; i++) { |
| j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1); |
| j2 = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 2); |
| if (j == j2) continue; |
| if ((j != 0) && (j != 0xffff)) break; |
| } |
| } |
| |
| info->phy_id = (i < 32) ? i : -1; |
| link->dev_node = &info->node; |
| SET_NETDEV_DEV(dev, &handle_to_dev(link)); |
| |
| if (register_netdev(dev) != 0) { |
| printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n"); |
| link->dev_node = NULL; |
| goto failed; |
| } |
| |
| strcpy(info->node.dev_name, dev->name); |
| |
| printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, " |
| "hw_addr %pM\n", |
| dev->name, ((info->flags & IS_AX88790) ? 7 : 1), |
| dev->base_addr, dev->irq, |
| dev->dev_addr); |
| if (info->phy_id != -1) { |
| dev_dbg(&link->dev, " MII transceiver at index %d, status %x.\n", info->phy_id, j); |
| } else { |
| printk(KERN_NOTICE " No MII transceivers found!\n"); |
| } |
| return 0; |
| |
| failed: |
| axnet_release(link); |
| return -ENODEV; |
| } /* axnet_config */ |
| |
| /*====================================================================== |
| |
| After a card is removed, axnet_release() will unregister the net |
| device, and release the PCMCIA configuration. If the device is |
| still open, this will be postponed until it is closed. |
| |
| ======================================================================*/ |
| |
| static void axnet_release(struct pcmcia_device *link) |
| { |
| pcmcia_disable_device(link); |
| } |
| |
| static int axnet_suspend(struct pcmcia_device *link) |
| { |
| struct net_device *dev = link->priv; |
| |
| if (link->open) |
| netif_device_detach(dev); |
| |
| return 0; |
| } |
| |
| static int axnet_resume(struct pcmcia_device *link) |
| { |
| struct net_device *dev = link->priv; |
| |
| if (link->open) { |
| axnet_reset_8390(dev); |
| AX88190_init(dev, 1); |
| netif_device_attach(dev); |
| } |
| |
| return 0; |
| } |
| |
| |
| /*====================================================================== |
| |
| MII interface support |
| |
| ======================================================================*/ |
| |
| #define MDIO_SHIFT_CLK 0x01 |
| #define MDIO_DATA_WRITE0 0x00 |
| #define MDIO_DATA_WRITE1 0x08 |
| #define MDIO_DATA_READ 0x04 |
| #define MDIO_MASK 0x0f |
| #define MDIO_ENB_IN 0x02 |
| |
| static void mdio_sync(unsigned int addr) |
| { |
| int bits; |
| for (bits = 0; bits < 32; bits++) { |
| outb_p(MDIO_DATA_WRITE1, addr); |
| outb_p(MDIO_DATA_WRITE1 | MDIO_SHIFT_CLK, addr); |
| } |
| } |
| |
| static int mdio_read(unsigned int addr, int phy_id, int loc) |
| { |
| u_int cmd = (0xf6<<10)|(phy_id<<5)|loc; |
| int i, retval = 0; |
| |
| mdio_sync(addr); |
| for (i = 14; i >= 0; i--) { |
| int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; |
| outb_p(dat, addr); |
| outb_p(dat | MDIO_SHIFT_CLK, addr); |
| } |
| for (i = 19; i > 0; i--) { |
| outb_p(MDIO_ENB_IN, addr); |
| retval = (retval << 1) | ((inb_p(addr) & MDIO_DATA_READ) != 0); |
| outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr); |
| } |
| return (retval>>1) & 0xffff; |
| } |
| |
| static void mdio_write(unsigned int addr, int phy_id, int loc, int value) |
| { |
| u_int cmd = (0x05<<28)|(phy_id<<23)|(loc<<18)|(1<<17)|value; |
| int i; |
| |
| mdio_sync(addr); |
| for (i = 31; i >= 0; i--) { |
| int dat = (cmd&(1<<i)) ? MDIO_DATA_WRITE1 : MDIO_DATA_WRITE0; |
| outb_p(dat, addr); |
| outb_p(dat | MDIO_SHIFT_CLK, addr); |
| } |
| for (i = 1; i >= 0; i--) { |
| outb_p(MDIO_ENB_IN, addr); |
| outb_p(MDIO_ENB_IN | MDIO_SHIFT_CLK, addr); |
| } |
| } |
| |
| /*====================================================================*/ |
| |
| static int axnet_open(struct net_device *dev) |
| { |
| int ret; |
| axnet_dev_t *info = PRIV(dev); |
| struct pcmcia_device *link = info->p_dev; |
| unsigned int nic_base = dev->base_addr; |
| |
| dev_dbg(&link->dev, "axnet_open('%s')\n", dev->name); |
| |
| if (!pcmcia_dev_present(link)) |
| return -ENODEV; |
| |
| outb_p(0xFF, nic_base + EN0_ISR); /* Clear bogus intr. */ |
| ret = request_irq(dev->irq, ei_irq_wrapper, IRQF_SHARED, "axnet_cs", dev); |
| if (ret) |
| return ret; |
| |
| link->open++; |
| |
| info->link_status = 0x00; |
| init_timer(&info->watchdog); |
| info->watchdog.function = &ei_watchdog; |
| info->watchdog.data = (u_long)dev; |
| info->watchdog.expires = jiffies + HZ; |
| add_timer(&info->watchdog); |
| |
| return ax_open(dev); |
| } /* axnet_open */ |
| |
| /*====================================================================*/ |
| |
| static int axnet_close(struct net_device *dev) |
| { |
| axnet_dev_t *info = PRIV(dev); |
| struct pcmcia_device *link = info->p_dev; |
| |
| dev_dbg(&link->dev, "axnet_close('%s')\n", dev->name); |
| |
| ax_close(dev); |
| free_irq(dev->irq, dev); |
| |
| link->open--; |
| netif_stop_queue(dev); |
| del_timer_sync(&info->watchdog); |
| |
| return 0; |
| } /* axnet_close */ |
| |
| /*====================================================================== |
| |
| 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 axnet_reset_8390(struct net_device *dev) |
| { |
| unsigned int nic_base = dev->base_addr; |
| int i; |
| |
| ei_status.txing = ei_status.dmaing = 0; |
| |
| outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, nic_base + E8390_CMD); |
| |
| outb(inb(nic_base + AXNET_RESET), nic_base + AXNET_RESET); |
| |
| for (i = 0; i < 100; i++) { |
| if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0) |
| break; |
| udelay(100); |
| } |
| outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */ |
| |
| if (i == 100) |
| printk(KERN_ERR "%s: axnet_reset_8390() did not complete.\n", |
| dev->name); |
| |
| } /* axnet_reset_8390 */ |
| |
| /*====================================================================*/ |
| |
| static irqreturn_t ei_irq_wrapper(int irq, void *dev_id) |
| { |
| struct net_device *dev = dev_id; |
| PRIV(dev)->stale = 0; |
| return ax_interrupt(irq, dev_id); |
| } |
| |
| static void ei_watchdog(u_long arg) |
| { |
| struct net_device *dev = (struct net_device *)(arg); |
| axnet_dev_t *info = PRIV(dev); |
| unsigned int nic_base = dev->base_addr; |
| unsigned int mii_addr = nic_base + AXNET_MII_EEP; |
| u_short link; |
| |
| if (!netif_device_present(dev)) goto reschedule; |
| |
| /* Check for pending interrupt with expired latency timer: with |
| this, we can limp along even if the interrupt is blocked */ |
| if (info->stale++ && (inb_p(nic_base + EN0_ISR) & ENISR_ALL)) { |
| if (!info->fast_poll) |
| printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name); |
| ei_irq_wrapper(dev->irq, dev); |
| info->fast_poll = HZ; |
| } |
| if (info->fast_poll) { |
| info->fast_poll--; |
| info->watchdog.expires = jiffies + 1; |
| add_timer(&info->watchdog); |
| return; |
| } |
| |
| if (info->phy_id < 0) |
| goto reschedule; |
| link = mdio_read(mii_addr, info->phy_id, 1); |
| if (!link || (link == 0xffff)) { |
| printk(KERN_INFO "%s: MII is missing!\n", dev->name); |
| info->phy_id = -1; |
| goto reschedule; |
| } |
| |
| link &= 0x0004; |
| if (link != info->link_status) { |
| u_short p = mdio_read(mii_addr, info->phy_id, 5); |
| printk(KERN_INFO "%s: %s link beat\n", dev->name, |
| (link) ? "found" : "lost"); |
| if (link) { |
| info->duplex_flag = (p & 0x0140) ? 0x80 : 0x00; |
| if (p) |
| printk(KERN_INFO "%s: autonegotiation complete: " |
| "%sbaseT-%cD selected\n", dev->name, |
| ((p & 0x0180) ? "100" : "10"), |
| ((p & 0x0140) ? 'F' : 'H')); |
| else |
| printk(KERN_INFO "%s: link partner did not autonegotiate\n", |
| dev->name); |
| AX88190_init(dev, 1); |
| } |
| info->link_status = link; |
| } |
| |
| reschedule: |
| info->watchdog.expires = jiffies + HZ; |
| add_timer(&info->watchdog); |
| } |
| |
| static void netdev_get_drvinfo(struct net_device *dev, |
| struct ethtool_drvinfo *info) |
| { |
| strcpy(info->driver, "axnet_cs"); |
| } |
| |
| static const struct ethtool_ops netdev_ethtool_ops = { |
| .get_drvinfo = netdev_get_drvinfo, |
| }; |
| |
| /*====================================================================*/ |
| |
| static int axnet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| { |
| axnet_dev_t *info = PRIV(dev); |
| struct mii_ioctl_data *data = if_mii(rq); |
| unsigned int mii_addr = dev->base_addr + AXNET_MII_EEP; |
| switch (cmd) { |
| case SIOCGMIIPHY: |
| data->phy_id = info->phy_id; |
| case SIOCGMIIREG: /* Read MII PHY register. */ |
| data->val_out = mdio_read(mii_addr, data->phy_id, data->reg_num & 0x1f); |
| return 0; |
| case SIOCSMIIREG: /* Write MII PHY register. */ |
| mdio_write(mii_addr, data->phy_id, data->reg_num & 0x1f, data->val_in); |
| return 0; |
| } |
| return -EOPNOTSUPP; |
| } |
| |
| /*====================================================================*/ |
| |
| static void get_8390_hdr(struct net_device *dev, |
| struct e8390_pkt_hdr *hdr, |
| int ring_page) |
| { |
| unsigned int nic_base = dev->base_addr; |
| |
| outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */ |
| outb_p(ring_page, nic_base + EN0_RSARHI); |
| outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD); |
| |
| insw(nic_base + AXNET_DATAPORT, hdr, |
| sizeof(struct e8390_pkt_hdr)>>1); |
| /* Fix for big endian systems */ |
| hdr->count = le16_to_cpu(hdr->count); |
| |
| } |
| |
| /*====================================================================*/ |
| |
| static void block_input(struct net_device *dev, int count, |
| struct sk_buff *skb, int ring_offset) |
| { |
| unsigned int nic_base = dev->base_addr; |
| int xfer_count = count; |
| char *buf = skb->data; |
| |
| if ((ei_debug > 4) && (count != 4)) |
| pr_debug("%s: [bi=%d]\n", dev->name, count+4); |
| outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO); |
| outb_p(ring_offset >> 8, nic_base + EN0_RSARHI); |
| outb_p(E8390_RREAD+E8390_START, nic_base + AXNET_CMD); |
| |
| insw(nic_base + AXNET_DATAPORT,buf,count>>1); |
| if (count & 0x01) |
| buf[count-1] = inb(nic_base + AXNET_DATAPORT), xfer_count++; |
| |
| } |
| |
| /*====================================================================*/ |
| |
| static void block_output(struct net_device *dev, int count, |
| const u_char *buf, const int start_page) |
| { |
| unsigned int nic_base = dev->base_addr; |
| |
| pr_debug("%s: [bo=%d]\n", dev->name, count); |
| |
| /* 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 (count & 0x01) |
| count++; |
| |
| outb_p(0x00, nic_base + EN0_RSARLO); |
| outb_p(start_page, nic_base + EN0_RSARHI); |
| outb_p(E8390_RWRITE+E8390_START, nic_base + AXNET_CMD); |
| outsw(nic_base + AXNET_DATAPORT, buf, count>>1); |
| } |
| |
| static struct pcmcia_device_id axnet_ids[] = { |
| PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x016c, 0x0081), |
| PCMCIA_DEVICE_MANF_CARD(0x018a, 0x0301), |
| PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0301), |
| PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0303), |
| PCMCIA_DEVICE_MANF_CARD(0x026f, 0x0309), |
| PCMCIA_DEVICE_MANF_CARD(0x0274, 0x1106), |
| PCMCIA_DEVICE_MANF_CARD(0x8a01, 0xc1ab), |
| PCMCIA_DEVICE_MANF_CARD(0x021b, 0x0202), |
| PCMCIA_DEVICE_MANF_CARD(0xffff, 0x1090), |
| PCMCIA_DEVICE_PROD_ID12("AmbiCom,Inc.", "Fast Ethernet PC Card(AMB8110)", 0x49b020a7, 0x119cc9fc), |
| PCMCIA_DEVICE_PROD_ID124("Fast Ethernet", "16-bit PC Card", "AX88190", 0xb4be14e3, 0x9a12eb6a, 0xab9be5ef), |
| PCMCIA_DEVICE_PROD_ID12("ASIX", "AX88190", 0x0959823b, 0xab9be5ef), |
| PCMCIA_DEVICE_PROD_ID12("Billionton", "LNA-100B", 0x552ab682, 0xbc3b87e1), |
| PCMCIA_DEVICE_PROD_ID12("CHEETAH ETHERCARD", "EN2228", 0x00fa7bc8, 0x00e990cc), |
| PCMCIA_DEVICE_PROD_ID12("CNet", "CNF301", 0xbc477dde, 0x78c5f40b), |
| PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEther PCC-TXD", 0x5261440f, 0x436768c5), |
| PCMCIA_DEVICE_PROD_ID12("corega K.K.", "corega FEtherII PCC-TXD", 0x5261440f, 0x730df72e), |
| PCMCIA_DEVICE_PROD_ID12("Dynalink", "L100C16", 0x55632fd5, 0x66bc2a90), |
| PCMCIA_DEVICE_PROD_ID12("IO DATA", "ETXPCM", 0x547e66dc, 0x233adac2), |
| PCMCIA_DEVICE_PROD_ID12("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8), |
| PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609), |
| PCMCIA_DEVICE_PROD_ID12("NETGEAR", "FA411", 0x9aa79dc3, 0x40fad875), |
| PCMCIA_DEVICE_PROD_ID12("PCMCIA", "100BASE", 0x281f1c5d, 0x7c2add04), |
| PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FastEtherCard", 0x281f1c5d, 0x7ef26116), |
| PCMCIA_DEVICE_PROD_ID12("PCMCIA", "FEP501", 0x281f1c5d, 0x2e272058), |
| PCMCIA_DEVICE_PROD_ID14("Network Everywhere", "AX88190", 0x820a67b6, 0xab9be5ef), |
| PCMCIA_DEVICE_NULL, |
| }; |
| MODULE_DEVICE_TABLE(pcmcia, axnet_ids); |
| |
| static struct pcmcia_driver axnet_cs_driver = { |
| .owner = THIS_MODULE, |
| .drv = { |
| .name = "axnet_cs", |
| }, |
| .probe = axnet_probe, |
| .remove = axnet_detach, |
| .id_table = axnet_ids, |
| .suspend = axnet_suspend, |
| .resume = axnet_resume, |
| }; |
| |
| static int __init init_axnet_cs(void) |
| { |
| return pcmcia_register_driver(&axnet_cs_driver); |
| } |
| |
| static void __exit exit_axnet_cs(void) |
| { |
| pcmcia_unregister_driver(&axnet_cs_driver); |
| } |
| |
| module_init(init_axnet_cs); |
| module_exit(exit_axnet_cs); |
| |
| /*====================================================================*/ |
| |
| /* 8390.c: A general NS8390 ethernet driver core for linux. */ |
| /* |
| Written 1992-94 by Donald Becker. |
| |
| Copyright 1993 United States Government as represented by the |
| Director, National Security Agency. |
| |
| This software may be used and distributed according to the terms |
| of the GNU General Public License, incorporated herein by reference. |
| |
| The author may be reached as becker@scyld.com, or C/O |
| Scyld Computing Corporation |
| 410 Severn Ave., Suite 210 |
| Annapolis MD 21403 |
| |
| This is the chip-specific code for many 8390-based ethernet adaptors. |
| This is not a complete driver, it must be combined with board-specific |
| code such as ne.c, wd.c, 3c503.c, etc. |
| |
| Seeing how at least eight drivers use this code, (not counting the |
| PCMCIA ones either) it is easy to break some card by what seems like |
| a simple innocent change. Please contact me or Donald if you think |
| you have found something that needs changing. -- PG |
| |
| Changelog: |
| |
| Paul Gortmaker : remove set_bit lock, other cleanups. |
| Paul Gortmaker : add ei_get_8390_hdr() so we can pass skb's to |
| ei_block_input() for eth_io_copy_and_sum(). |
| Paul Gortmaker : exchange static int ei_pingpong for a #define, |
| also add better Tx error handling. |
| Paul Gortmaker : rewrite Rx overrun handling as per NS specs. |
| Alexey Kuznetsov : use the 8390's six bit hash multicast filter. |
| Paul Gortmaker : tweak ANK's above multicast changes a bit. |
| Paul Gortmaker : update packet statistics for v2.1.x |
| Alan Cox : support arbitary stupid port mappings on the |
| 68K Macintosh. Support >16bit I/O spaces |
| Paul Gortmaker : add kmod support for auto-loading of the 8390 |
| module by all drivers that require it. |
| Alan Cox : Spinlocking work, added 'BUG_83C690' |
| Paul Gortmaker : Separate out Tx timeout code from Tx path. |
| |
| Sources: |
| The National Semiconductor LAN Databook, and the 3Com 3c503 databook. |
| |
| */ |
| |
| static const char version_8390[] = KERN_INFO \ |
| "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@scyld.com)\n"; |
| |
| #include <linux/bitops.h> |
| #include <asm/irq.h> |
| #include <linux/fcntl.h> |
| #include <linux/in.h> |
| #include <linux/interrupt.h> |
| |
| #define BUG_83C690 |
| |
| /* These are the operational function interfaces to board-specific |
| routines. |
| void reset_8390(struct net_device *dev) |
| Resets the board associated with DEV, including a hardware reset of |
| the 8390. This is only called when there is a transmit timeout, and |
| it is always followed by 8390_init(). |
| void block_output(struct net_device *dev, int count, const unsigned char *buf, |
| int start_page) |
| Write the COUNT bytes of BUF to the packet buffer at START_PAGE. The |
| "page" value uses the 8390's 256-byte pages. |
| void get_8390_hdr(struct net_device *dev, struct e8390_hdr *hdr, int ring_page) |
| Read the 4 byte, page aligned 8390 header. *If* there is a |
| subsequent read, it will be of the rest of the packet. |
| void block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset) |
| Read COUNT bytes from the packet buffer into the skb data area. Start |
| reading from RING_OFFSET, the address as the 8390 sees it. This will always |
| follow the read of the 8390 header. |
| */ |
| #define ei_reset_8390 (ei_local->reset_8390) |
| #define ei_block_output (ei_local->block_output) |
| #define ei_block_input (ei_local->block_input) |
| #define ei_get_8390_hdr (ei_local->get_8390_hdr) |
| |
| /* use 0 for production, 1 for verification, >2 for debug */ |
| #ifndef ei_debug |
| int ei_debug = 1; |
| #endif |
| |
| /* Index to functions. */ |
| static void ei_tx_intr(struct net_device *dev); |
| static void ei_tx_err(struct net_device *dev); |
| static void ei_receive(struct net_device *dev); |
| static void ei_rx_overrun(struct net_device *dev); |
| |
| /* Routines generic to NS8390-based boards. */ |
| static void NS8390_trigger_send(struct net_device *dev, unsigned int length, |
| int start_page); |
| static void do_set_multicast_list(struct net_device *dev); |
| |
| /* |
| * SMP and the 8390 setup. |
| * |
| * The 8390 isnt exactly designed to be multithreaded on RX/TX. There is |
| * a page register that controls bank and packet buffer access. We guard |
| * this with ei_local->page_lock. Nobody should assume or set the page other |
| * than zero when the lock is not held. Lock holders must restore page 0 |
| * before unlocking. Even pure readers must take the lock to protect in |
| * page 0. |
| * |
| * To make life difficult the chip can also be very slow. We therefore can't |
| * just use spinlocks. For the longer lockups we disable the irq the device |
| * sits on and hold the lock. We must hold the lock because there is a dual |
| * processor case other than interrupts (get stats/set multicast list in |
| * parallel with each other and transmit). |
| * |
| * Note: in theory we can just disable the irq on the card _but_ there is |
| * a latency on SMP irq delivery. So we can easily go "disable irq" "sync irqs" |
| * enter lock, take the queued irq. So we waddle instead of flying. |
| * |
| * Finally by special arrangement for the purpose of being generally |
| * annoying the transmit function is called bh atomic. That places |
| * restrictions on the user context callers as disable_irq won't save |
| * them. |
| */ |
| |
| /** |
| * ax_open - Open/initialize the board. |
| * @dev: network device to initialize |
| * |
| * This routine goes all-out, setting everything |
| * up anew at each open, even though many of these registers should only |
| * need to be set once at boot. |
| */ |
| static int ax_open(struct net_device *dev) |
| { |
| unsigned long flags; |
| struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); |
| |
| /* |
| * Grab the page lock so we own the register set, then call |
| * the init function. |
| */ |
| |
| spin_lock_irqsave(&ei_local->page_lock, flags); |
| AX88190_init(dev, 1); |
| /* Set the flag before we drop the lock, That way the IRQ arrives |
| after its set and we get no silly warnings */ |
| netif_start_queue(dev); |
| spin_unlock_irqrestore(&ei_local->page_lock, flags); |
| ei_local->irqlock = 0; |
| return 0; |
| } |
| |
| #define dev_lock(dev) (((struct ei_device *)netdev_priv(dev))->page_lock) |
| |
| /** |
| * ax_close - shut down network device |
| * @dev: network device to close |
| * |
| * Opposite of ax_open(). Only used when "ifconfig <devname> down" is done. |
| */ |
| static int ax_close(struct net_device *dev) |
| { |
| unsigned long flags; |
| |
| /* |
| * Hold the page lock during close |
| */ |
| |
| spin_lock_irqsave(&dev_lock(dev), flags); |
| AX88190_init(dev, 0); |
| spin_unlock_irqrestore(&dev_lock(dev), flags); |
| netif_stop_queue(dev); |
| return 0; |
| } |
| |
| /** |
| * axnet_tx_timeout - handle transmit time out condition |
| * @dev: network device which has apparently fallen asleep |
| * |
| * Called by kernel when device never acknowledges a transmit has |
| * completed (or failed) - i.e. never posted a Tx related interrupt. |
| */ |
| |
| static void axnet_tx_timeout(struct net_device *dev) |
| { |
| long e8390_base = dev->base_addr; |
| struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); |
| int txsr, isr, tickssofar = jiffies - dev->trans_start; |
| unsigned long flags; |
| |
| dev->stats.tx_errors++; |
| |
| spin_lock_irqsave(&ei_local->page_lock, flags); |
| txsr = inb(e8390_base+EN0_TSR); |
| isr = inb(e8390_base+EN0_ISR); |
| spin_unlock_irqrestore(&ei_local->page_lock, flags); |
| |
| printk(KERN_DEBUG "%s: Tx timed out, %s TSR=%#2x, ISR=%#2x, t=%d.\n", |
| dev->name, (txsr & ENTSR_ABT) ? "excess collisions." : |
| (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar); |
| |
| if (!isr && !dev->stats.tx_packets) |
| { |
| /* The 8390 probably hasn't gotten on the cable yet. */ |
| ei_local->interface_num ^= 1; /* Try a different xcvr. */ |
| } |
| |
| /* Ugly but a reset can be slow, yet must be protected */ |
| |
| spin_lock_irqsave(&ei_local->page_lock, flags); |
| |
| /* Try to restart the card. Perhaps the user has fixed something. */ |
| ei_reset_8390(dev); |
| AX88190_init(dev, 1); |
| |
| spin_unlock_irqrestore(&ei_local->page_lock, flags); |
| netif_wake_queue(dev); |
| } |
| |
| /** |
| * axnet_start_xmit - begin packet transmission |
| * @skb: packet to be sent |
| * @dev: network device to which packet is sent |
| * |
| * Sends a packet to an 8390 network device. |
| */ |
| |
| static netdev_tx_t axnet_start_xmit(struct sk_buff *skb, |
| struct net_device *dev) |
| { |
| long e8390_base = dev->base_addr; |
| struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); |
| int length, send_length, output_page; |
| unsigned long flags; |
| u8 packet[ETH_ZLEN]; |
| |
| netif_stop_queue(dev); |
| |
| length = skb->len; |
| |
| /* Mask interrupts from the ethercard. |
| SMP: We have to grab the lock here otherwise the IRQ handler |
| on another CPU can flip window and race the IRQ mask set. We end |
| up trashing the mcast filter not disabling irqs if we don't lock */ |
| |
| spin_lock_irqsave(&ei_local->page_lock, flags); |
| outb_p(0x00, e8390_base + EN0_IMR); |
| spin_unlock_irqrestore(&ei_local->page_lock, flags); |
| |
| /* |
| * Slow phase with lock held. |
| */ |
| |
| spin_lock_irqsave(&ei_local->page_lock, flags); |
| |
| ei_local->irqlock = 1; |
| |
| send_length = max(length, ETH_ZLEN); |
| |
| /* |
| * We have two Tx slots available for use. Find the first free |
| * slot, and then perform some sanity checks. With two Tx bufs, |
| * you get very close to transmitting back-to-back packets. With |
| * only one Tx buf, the transmitter sits idle while you reload the |
| * card, leaving a substantial gap between each transmitted packet. |
| */ |
| |
| if (ei_local->tx1 == 0) |
| { |
| output_page = ei_local->tx_start_page; |
| ei_local->tx1 = send_length; |
| if (ei_debug && ei_local->tx2 > 0) |
| printk(KERN_DEBUG "%s: idle transmitter tx2=%d, lasttx=%d, txing=%d.\n", |
| dev->name, ei_local->tx2, ei_local->lasttx, ei_local->txing); |
| } |
| else if (ei_local->tx2 == 0) |
| { |
| output_page = ei_local->tx_start_page + TX_PAGES/2; |
| ei_local->tx2 = send_length; |
| if (ei_debug && ei_local->tx1 > 0) |
| printk(KERN_DEBUG "%s: idle transmitter, tx1=%d, lasttx=%d, txing=%d.\n", |
| dev->name, ei_local->tx1, ei_local->lasttx, ei_local->txing); |
| } |
| else |
| { /* We should never get here. */ |
| if (ei_debug) |
| printk(KERN_DEBUG "%s: No Tx buffers free! tx1=%d tx2=%d last=%d\n", |
| dev->name, ei_local->tx1, ei_local->tx2, ei_local->lasttx); |
| ei_local->irqlock = 0; |
| netif_stop_queue(dev); |
| outb_p(ENISR_ALL, e8390_base + EN0_IMR); |
| spin_unlock_irqrestore(&ei_local->page_lock, flags); |
| dev->stats.tx_errors++; |
| return NETDEV_TX_BUSY; |
| } |
| |
| /* |
| * Okay, now upload the packet and trigger a send if the transmitter |
| * isn't already sending. If it is busy, the interrupt handler will |
| * trigger the send later, upon receiving a Tx done interrupt. |
| */ |
| |
| if (length == skb->len) |
| ei_block_output(dev, length, skb->data, output_page); |
| else { |
| memset(packet, 0, ETH_ZLEN); |
| skb_copy_from_linear_data(skb, packet, skb->len); |
| ei_block_output(dev, length, packet, output_page); |
| } |
| |
| if (! ei_local->txing) |
| { |
| ei_local->txing = 1; |
| NS8390_trigger_send(dev, send_length, output_page); |
| dev->trans_start = jiffies; |
| if (output_page == ei_local->tx_start_page) |
| { |
| ei_local->tx1 = -1; |
| ei_local->lasttx = -1; |
| } |
| else |
| { |
| ei_local->tx2 = -1; |
| ei_local->lasttx = -2; |
| } |
| } |
| else ei_local->txqueue++; |
| |
| if (ei_local->tx1 && ei_local->tx2) |
| netif_stop_queue(dev); |
| else |
| netif_start_queue(dev); |
| |
| /* Turn 8390 interrupts back on. */ |
| ei_local->irqlock = 0; |
| outb_p(ENISR_ALL, e8390_base + EN0_IMR); |
| |
| spin_unlock_irqrestore(&ei_local->page_lock, flags); |
| |
| dev_kfree_skb (skb); |
| dev->stats.tx_bytes += send_length; |
| |
| return NETDEV_TX_OK; |
| } |
| |
| /** |
| * ax_interrupt - handle the interrupts from an 8390 |
| * @irq: interrupt number |
| * @dev_id: a pointer to the net_device |
| * |
| * Handle the ether interface interrupts. We pull packets from |
| * the 8390 via the card specific functions and fire them at the networking |
| * stack. We also handle transmit completions and wake the transmit path if |
| * necessary. We also update the counters and do other housekeeping as |
| * needed. |
| */ |
| |
| static irqreturn_t ax_interrupt(int irq, void *dev_id) |
| { |
| struct net_device *dev = dev_id; |
| long e8390_base; |
| int interrupts, nr_serviced = 0, i; |
| struct ei_device *ei_local; |
| int handled = 0; |
| |
| e8390_base = dev->base_addr; |
| ei_local = netdev_priv(dev); |
| |
| /* |
| * Protect the irq test too. |
| */ |
| |
| spin_lock(&ei_local->page_lock); |
| |
| if (ei_local->irqlock) |
| { |
| #if 1 /* This might just be an interrupt for a PCI device sharing this line */ |
| /* The "irqlock" check is only for testing. */ |
| printk(ei_local->irqlock |
| ? "%s: Interrupted while interrupts are masked! isr=%#2x imr=%#2x.\n" |
| : "%s: Reentering the interrupt handler! isr=%#2x imr=%#2x.\n", |
| dev->name, inb_p(e8390_base + EN0_ISR), |
| inb_p(e8390_base + EN0_IMR)); |
| #endif |
| spin_unlock(&ei_local->page_lock); |
| return IRQ_NONE; |
| } |
| |
| if (ei_debug > 3) |
| printk(KERN_DEBUG "%s: interrupt(isr=%#2.2x).\n", dev->name, |
| inb_p(e8390_base + EN0_ISR)); |
| |
| outb_p(0x00, e8390_base + EN0_ISR); |
| ei_local->irqlock = 1; |
| |
| /* !!Assumption!! -- we stay in page 0. Don't break this. */ |
| while ((interrupts = inb_p(e8390_base + EN0_ISR)) != 0 |
| && ++nr_serviced < MAX_SERVICE) |
| { |
| if (!netif_running(dev) || (interrupts == 0xff)) { |
| if (ei_debug > 1) |
| printk(KERN_WARNING "%s: interrupt from stopped card\n", dev->name); |
| outb_p(interrupts, e8390_base + EN0_ISR); |
| interrupts = 0; |
| break; |
| } |
| handled = 1; |
| |
| /* AX88190 bug fix. */ |
| outb_p(interrupts, e8390_base + EN0_ISR); |
| for (i = 0; i < 10; i++) { |
| if (!(inb(e8390_base + EN0_ISR) & interrupts)) |
| break; |
| outb_p(0, e8390_base + EN0_ISR); |
| outb_p(interrupts, e8390_base + EN0_ISR); |
| } |
| if (interrupts & ENISR_OVER) |
| ei_rx_overrun(dev); |
| else if (interrupts & (ENISR_RX+ENISR_RX_ERR)) |
| { |
| /* Got a good (?) packet. */ |
| ei_receive(dev); |
| } |
| /* Push the next to-transmit packet through. */ |
| if (interrupts & ENISR_TX) |
| ei_tx_intr(dev); |
| else if (interrupts & ENISR_TX_ERR) |
| ei_tx_err(dev); |
| |
| if (interrupts & ENISR_COUNTERS) |
| { |
| dev->stats.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0); |
| dev->stats.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1); |
| dev->stats.rx_missed_errors+= inb_p(e8390_base + EN0_COUNTER2); |
| } |
| } |
| |
| if (interrupts && ei_debug > 3) |
| { |
| handled = 1; |
| if (nr_serviced >= MAX_SERVICE) |
| { |
| /* 0xFF is valid for a card removal */ |
| if(interrupts!=0xFF) |
| printk(KERN_WARNING "%s: Too much work at interrupt, status %#2.2x\n", |
| dev->name, interrupts); |
| outb_p(ENISR_ALL, e8390_base + EN0_ISR); /* Ack. most intrs. */ |
| } else { |
| printk(KERN_WARNING "%s: unknown interrupt %#2x\n", dev->name, interrupts); |
| outb_p(0xff, e8390_base + EN0_ISR); /* Ack. all intrs. */ |
| } |
| } |
| |
| /* Turn 8390 interrupts back on. */ |
| ei_local->irqlock = 0; |
| outb_p(ENISR_ALL, e8390_base + EN0_IMR); |
| |
| spin_unlock(&ei_local->page_lock); |
| return IRQ_RETVAL(handled); |
| } |
| |
| /** |
| * ei_tx_err - handle transmitter error |
| * @dev: network device which threw the exception |
| * |
| * A transmitter error has happened. Most likely excess collisions (which |
| * is a fairly normal condition). If the error is one where the Tx will |
| * have been aborted, we try and send another one right away, instead of |
| * letting the failed packet sit and collect dust in the Tx buffer. This |
| * is a much better solution as it avoids kernel based Tx timeouts, and |
| * an unnecessary card reset. |
| * |
| * Called with lock held. |
| */ |
| |
| static void ei_tx_err(struct net_device *dev) |
| { |
| long e8390_base = dev->base_addr; |
| unsigned char txsr = inb_p(e8390_base+EN0_TSR); |
| unsigned char tx_was_aborted = txsr & (ENTSR_ABT+ENTSR_FU); |
| |
| #ifdef VERBOSE_ERROR_DUMP |
| printk(KERN_DEBUG "%s: transmitter error (%#2x): ", dev->name, txsr); |
| if (txsr & ENTSR_ABT) |
| printk("excess-collisions "); |
| if (txsr & ENTSR_ND) |
| printk("non-deferral "); |
| if (txsr & ENTSR_CRS) |
| printk("lost-carrier "); |
| if (txsr & ENTSR_FU) |
| printk("FIFO-underrun "); |
| if (txsr & ENTSR_CDH) |
| printk("lost-heartbeat "); |
| printk("\n"); |
| #endif |
| |
| if (tx_was_aborted) |
| ei_tx_intr(dev); |
| else |
| { |
| dev->stats.tx_errors++; |
| if (txsr & ENTSR_CRS) dev->stats.tx_carrier_errors++; |
| if (txsr & ENTSR_CDH) dev->stats.tx_heartbeat_errors++; |
| if (txsr & ENTSR_OWC) dev->stats.tx_window_errors++; |
| } |
| } |
| |
| /** |
| * ei_tx_intr - transmit interrupt handler |
| * @dev: network device for which tx intr is handled |
| * |
| * We have finished a transmit: check for errors and then trigger the next |
| * packet to be sent. Called with lock held. |
| */ |
| |
| static void ei_tx_intr(struct net_device *dev) |
| { |
| long e8390_base = dev->base_addr; |
| struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); |
| int status = inb(e8390_base + EN0_TSR); |
| |
| /* |
| * There are two Tx buffers, see which one finished, and trigger |
| * the send of another one if it exists. |
| */ |
| ei_local->txqueue--; |
| |
| if (ei_local->tx1 < 0) |
| { |
| if (ei_local->lasttx != 1 && ei_local->lasttx != -1) |
| printk(KERN_ERR "%s: bogus last_tx_buffer %d, tx1=%d.\n", |
| ei_local->name, ei_local->lasttx, ei_local->tx1); |
| ei_local->tx1 = 0; |
| if (ei_local->tx2 > 0) |
| { |
| ei_local->txing = 1; |
| NS8390_trigger_send(dev, ei_local->tx2, ei_local->tx_start_page + 6); |
| dev->trans_start = jiffies; |
| ei_local->tx2 = -1, |
| ei_local->lasttx = 2; |
| } |
| else ei_local->lasttx = 20, ei_local->txing = 0; |
| } |
| else if (ei_local->tx2 < 0) |
| { |
| if (ei_local->lasttx != 2 && ei_local->lasttx != -2) |
| printk("%s: bogus last_tx_buffer %d, tx2=%d.\n", |
| ei_local->name, ei_local->lasttx, ei_local->tx2); |
| ei_local->tx2 = 0; |
| if (ei_local->tx1 > 0) |
| { |
| ei_local->txing = 1; |
| NS8390_trigger_send(dev, ei_local->tx1, ei_local->tx_start_page); |
| dev->trans_start = jiffies; |
| ei_local->tx1 = -1; |
| ei_local->lasttx = 1; |
| } |
| else |
| ei_local->lasttx = 10, ei_local->txing = 0; |
| } |
| // else printk(KERN_WARNING "%s: unexpected TX-done interrupt, lasttx=%d.\n", |
| // dev->name, ei_local->lasttx); |
| |
| /* Minimize Tx latency: update the statistics after we restart TXing. */ |
| if (status & ENTSR_COL) |
| dev->stats.collisions++; |
| if (status & ENTSR_PTX) |
| dev->stats.tx_packets++; |
| else |
| { |
| dev->stats.tx_errors++; |
| if (status & ENTSR_ABT) |
| { |
| dev->stats.tx_aborted_errors++; |
| dev->stats.collisions += 16; |
| } |
| if (status & ENTSR_CRS) |
| dev->stats.tx_carrier_errors++; |
| if (status & ENTSR_FU) |
| dev->stats.tx_fifo_errors++; |
| if (status & ENTSR_CDH) |
| dev->stats.tx_heartbeat_errors++; |
| if (status & ENTSR_OWC) |
| dev->stats.tx_window_errors++; |
| } |
| netif_wake_queue(dev); |
| } |
| |
| /** |
| * ei_receive - receive some packets |
| * @dev: network device with which receive will be run |
| * |
| * We have a good packet(s), get it/them out of the buffers. |
| * Called with lock held. |
| */ |
| |
| static void ei_receive(struct net_device *dev) |
| { |
| long e8390_base = dev->base_addr; |
| struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); |
| unsigned char rxing_page, this_frame, next_frame; |
| unsigned short current_offset; |
| int rx_pkt_count = 0; |
| struct e8390_pkt_hdr rx_frame; |
| |
| while (++rx_pkt_count < 10) |
| { |
| int pkt_len, pkt_stat; |
| |
| /* Get the rx page (incoming packet pointer). */ |
| rxing_page = inb_p(e8390_base + EN1_CURPAG -1); |
| |
| /* Remove one frame from the ring. Boundary is always a page behind. */ |
| this_frame = inb_p(e8390_base + EN0_BOUNDARY) + 1; |
| if (this_frame >= ei_local->stop_page) |
| this_frame = ei_local->rx_start_page; |
| |
| /* Someday we'll omit the previous, iff we never get this message. |
| (There is at least one clone claimed to have a problem.) |
| |
| Keep quiet if it looks like a card removal. One problem here |
| is that some clones crash in roughly the same way. |
| */ |
| if (ei_debug > 0 && this_frame != ei_local->current_page && (this_frame!=0x0 || rxing_page!=0xFF)) |
| printk(KERN_ERR "%s: mismatched read page pointers %2x vs %2x.\n", |
| dev->name, this_frame, ei_local->current_page); |
| |
| if (this_frame == rxing_page) /* Read all the frames? */ |
| break; /* Done for now */ |
| |
| current_offset = this_frame << 8; |
| ei_get_8390_hdr(dev, &rx_frame, this_frame); |
| |
| pkt_len = rx_frame.count - sizeof(struct e8390_pkt_hdr); |
| pkt_stat = rx_frame.status; |
| |
| next_frame = this_frame + 1 + ((pkt_len+4)>>8); |
| |
| if (pkt_len < 60 || pkt_len > 1518) |
| { |
| if (ei_debug) |
| printk(KERN_DEBUG "%s: bogus packet size: %d, status=%#2x nxpg=%#2x.\n", |
| dev->name, rx_frame.count, rx_frame.status, |
| rx_frame.next); |
| dev->stats.rx_errors++; |
| dev->stats.rx_length_errors++; |
| } |
| else if ((pkt_stat & 0x0F) == ENRSR_RXOK) |
| { |
| struct sk_buff *skb; |
| |
| skb = dev_alloc_skb(pkt_len+2); |
| if (skb == NULL) |
| { |
| if (ei_debug > 1) |
| printk(KERN_DEBUG "%s: Couldn't allocate a sk_buff of size %d.\n", |
| dev->name, pkt_len); |
| dev->stats.rx_dropped++; |
| break; |
| } |
| else |
| { |
| skb_reserve(skb,2); /* IP headers on 16 byte boundaries */ |
| skb_put(skb, pkt_len); /* Make room */ |
| ei_block_input(dev, pkt_len, skb, current_offset + sizeof(rx_frame)); |
| skb->protocol=eth_type_trans(skb,dev); |
| netif_rx(skb); |
| dev->stats.rx_packets++; |
| dev->stats.rx_bytes += pkt_len; |
| if (pkt_stat & ENRSR_PHY) |
| dev->stats.multicast++; |
| } |
| } |
| else |
| { |
| if (ei_debug) |
| printk(KERN_DEBUG "%s: bogus packet: status=%#2x nxpg=%#2x size=%d\n", |
| dev->name, rx_frame.status, rx_frame.next, |
| rx_frame.count); |
| dev->stats.rx_errors++; |
| /* NB: The NIC counts CRC, frame and missed errors. */ |
| if (pkt_stat & ENRSR_FO) |
| dev->stats.rx_fifo_errors++; |
| } |
| next_frame = rx_frame.next; |
| |
| /* This _should_ never happen: it's here for avoiding bad clones. */ |
| if (next_frame >= ei_local->stop_page) { |
| printk("%s: next frame inconsistency, %#2x\n", dev->name, |
| next_frame); |
| next_frame = ei_local->rx_start_page; |
| } |
| ei_local->current_page = next_frame; |
| outb_p(next_frame-1, e8390_base+EN0_BOUNDARY); |
| } |
| |
| return; |
| } |
| |
| /** |
| * ei_rx_overrun - handle receiver overrun |
| * @dev: network device which threw exception |
| * |
| * We have a receiver overrun: we have to kick the 8390 to get it started |
| * again. Problem is that you have to kick it exactly as NS prescribes in |
| * the updated datasheets, or "the NIC may act in an unpredictable manner." |
| * This includes causing "the NIC to defer indefinitely when it is stopped |
| * on a busy network." Ugh. |
| * Called with lock held. Don't call this with the interrupts off or your |
| * computer will hate you - it takes 10ms or so. |
| */ |
| |
| static void ei_rx_overrun(struct net_device *dev) |
| { |
| axnet_dev_t *info = PRIV(dev); |
| long e8390_base = dev->base_addr; |
| unsigned char was_txing, must_resend = 0; |
| |
| /* |
| * Record whether a Tx was in progress and then issue the |
| * stop command. |
| */ |
| was_txing = inb_p(e8390_base+E8390_CMD) & E8390_TRANS; |
| outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); |
| |
| if (ei_debug > 1) |
| printk(KERN_DEBUG "%s: Receiver overrun.\n", dev->name); |
| dev->stats.rx_over_errors++; |
| |
| /* |
| * Wait a full Tx time (1.2ms) + some guard time, NS says 1.6ms total. |
| * Early datasheets said to poll the reset bit, but now they say that |
| * it "is not a reliable indicator and subsequently should be ignored." |
| * We wait at least 10ms. |
| */ |
| |
| mdelay(10); |
| |
| /* |
| * Reset RBCR[01] back to zero as per magic incantation. |
| */ |
| outb_p(0x00, e8390_base+EN0_RCNTLO); |
| outb_p(0x00, e8390_base+EN0_RCNTHI); |
| |
| /* |
| * See if any Tx was interrupted or not. According to NS, this |
| * step is vital, and skipping it will cause no end of havoc. |
| */ |
| |
| if (was_txing) |
| { |
| unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR); |
| if (!tx_completed) |
| must_resend = 1; |
| } |
| |
| /* |
| * Have to enter loopback mode and then restart the NIC before |
| * you are allowed to slurp packets up off the ring. |
| */ |
| outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); |
| outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START, e8390_base + E8390_CMD); |
| |
| /* |
| * Clear the Rx ring of all the debris, and ack the interrupt. |
| */ |
| ei_receive(dev); |
| |
| /* |
| * Leave loopback mode, and resend any packet that got stopped. |
| */ |
| outb_p(E8390_TXCONFIG | info->duplex_flag, e8390_base + EN0_TXCR); |
| if (must_resend) |
| outb_p(E8390_NODMA + E8390_PAGE0 + E8390_START + E8390_TRANS, e8390_base + E8390_CMD); |
| } |
| |
| /* |
| * Collect the stats. This is called unlocked and from several contexts. |
| */ |
| |
| static struct net_device_stats *get_stats(struct net_device *dev) |
| { |
| long ioaddr = dev->base_addr; |
| struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); |
| unsigned long flags; |
| |
| /* If the card is stopped, just return the present stats. */ |
| if (!netif_running(dev)) |
| return &dev->stats; |
| |
| spin_lock_irqsave(&ei_local->page_lock,flags); |
| /* Read the counter registers, assuming we are in page 0. */ |
| dev->stats.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0); |
| dev->stats.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1); |
| dev->stats.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2); |
| spin_unlock_irqrestore(&ei_local->page_lock, flags); |
| |
| return &dev->stats; |
| } |
| |
| /* |
| * Form the 64 bit 8390 multicast table from the linked list of addresses |
| * associated with this dev structure. |
| */ |
| |
| static inline void make_mc_bits(u8 *bits, struct net_device *dev) |
| { |
| struct dev_mc_list *dmi; |
| u32 crc; |
| |
| for (dmi=dev->mc_list; dmi; dmi=dmi->next) { |
| |
| crc = ether_crc(ETH_ALEN, dmi->dmi_addr); |
| /* |
| * The 8390 uses the 6 most significant bits of the |
| * CRC to index the multicast table. |
| */ |
| bits[crc>>29] |= (1<<((crc>>26)&7)); |
| } |
| } |
| |
| /** |
| * do_set_multicast_list - set/clear multicast filter |
| * @dev: net device for which multicast filter is adjusted |
| * |
| * Set or clear the multicast filter for this adaptor. |
| * Must be called with lock held. |
| */ |
| |
| static void do_set_multicast_list(struct net_device *dev) |
| { |
| long e8390_base = dev->base_addr; |
| int i; |
| struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev); |
| |
| if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) { |
| memset(ei_local->mcfilter, 0, 8); |
| if (dev->mc_list) |
| make_mc_bits(ei_local->mcfilter, dev); |
| } else { |
| /* set to accept-all */ |
| memset(ei_local->mcfilter, 0xFF, 8); |
| } |
| |
| outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD); |
| for(i = 0; i < 8; i++) |
| { |
| outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i)); |
| } |
| outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD); |
| |
| if(dev->flags&IFF_PROMISC) |
| outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR); |
| else if(dev->flags&IFF_ALLMULTI || dev->mc_list) |
| outb_p(E8390_RXCONFIG | 0x48, e8390_base + EN0_RXCR); |
| else |
| outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); |
| |
| outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD); |
| } |
| |
| /* |
| * Called without lock held. This is invoked from user context and may |
| * be parallel to just about everything else. Its also fairly quick and |
| * not called too often. Must protect against both bh and irq users |
| */ |
| |
| static void set_multicast_list(struct net_device *dev) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&dev_lock(dev), flags); |
| do_set_multicast_list(dev); |
| spin_unlock_irqrestore(&dev_lock(dev), flags); |
| } |
| |
| /* This page of functions should be 8390 generic */ |
| /* Follow National Semi's recommendations for initializing the "NIC". */ |
| |
| /** |
| * AX88190_init - initialize 8390 hardware |
| * @dev: network device to initialize |
| * @startp: boolean. non-zero value to initiate chip processing |
| * |
| * Must be called with lock held. |
| */ |
| |
| static void AX88190_init(struct net_device *dev, int startp) |
| { |
| axnet_dev_t *info = PRIV(dev); |
| long e8390_base = dev->base_addr; |
| struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); |
| int i; |
| int endcfg = ei_local->word16 ? (0x48 | ENDCFG_WTS) : 0x48; |
| |
| if(sizeof(struct e8390_pkt_hdr)!=4) |
| panic("8390.c: header struct mispacked\n"); |
| /* Follow National Semi's recommendations for initing the DP83902. */ |
| outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */ |
| outb_p(endcfg, e8390_base + EN0_DCFG); /* 0x48 or 0x49 */ |
| /* Clear the remote byte count registers. */ |
| outb_p(0x00, e8390_base + EN0_RCNTLO); |
| outb_p(0x00, e8390_base + EN0_RCNTHI); |
| /* Set to monitor and loopback mode -- this is vital!. */ |
| outb_p(E8390_RXOFF|0x40, e8390_base + EN0_RXCR); /* 0x60 */ |
| outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */ |
| /* Set the transmit page and receive ring. */ |
| outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR); |
| ei_local->tx1 = ei_local->tx2 = 0; |
| outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG); |
| outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY); /* 3c503 says 0x3f,NS0x26*/ |
| ei_local->current_page = ei_local->rx_start_page; /* assert boundary+1 */ |
| outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG); |
| /* Clear the pending interrupts and mask. */ |
| outb_p(0xFF, e8390_base + EN0_ISR); |
| outb_p(0x00, e8390_base + EN0_IMR); |
| |
| /* Copy the station address into the DS8390 registers. */ |
| |
| outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */ |
| for(i = 0; i < 6; i++) |
| { |
| outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i)); |
| if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i]) |
| printk(KERN_ERR "Hw. address read/write mismap %d\n",i); |
| } |
| |
| outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG); |
| outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); |
| |
| netif_start_queue(dev); |
| ei_local->tx1 = ei_local->tx2 = 0; |
| ei_local->txing = 0; |
| |
| if (info->flags & IS_AX88790) /* select Internal PHY */ |
| outb(0x10, e8390_base + AXNET_GPIO); |
| |
| if (startp) |
| { |
| outb_p(0xff, e8390_base + EN0_ISR); |
| outb_p(ENISR_ALL, e8390_base + EN0_IMR); |
| outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD); |
| outb_p(E8390_TXCONFIG | info->duplex_flag, |
| e8390_base + EN0_TXCR); /* xmit on. */ |
| /* 3c503 TechMan says rxconfig only after the NIC is started. */ |
| outb_p(E8390_RXCONFIG | 0x40, e8390_base + EN0_RXCR); /* rx on, */ |
| do_set_multicast_list(dev); /* (re)load the mcast table */ |
| } |
| } |
| |
| /* Trigger a transmit start, assuming the length is valid. |
| Always called with the page lock held */ |
| |
| static void NS8390_trigger_send(struct net_device *dev, unsigned int length, |
| int start_page) |
| { |
| long e8390_base = dev->base_addr; |
| struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev); |
| |
| if (inb_p(e8390_base) & E8390_TRANS) |
| { |
| printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n", |
| dev->name); |
| return; |
| } |
| outb_p(length & 0xff, e8390_base + EN0_TCNTLO); |
| outb_p(length >> 8, e8390_base + EN0_TCNTHI); |
| outb_p(start_page, e8390_base + EN0_TPSR); |
| outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD); |
| } |