diff options
Diffstat (limited to 'drivers/net/pcmcia/axnet_cs.c')
| -rw-r--r-- | drivers/net/pcmcia/axnet_cs.c | 1864 |
1 files changed, 1864 insertions, 0 deletions
diff --git a/drivers/net/pcmcia/axnet_cs.c b/drivers/net/pcmcia/axnet_cs.c new file mode 100644 index 00000000000..853b586e481 --- /dev/null +++ b/drivers/net/pcmcia/axnet_cs.c @@ -0,0 +1,1864 @@ +/*====================================================================== + + 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 "../8390.h" + +#include <pcmcia/version.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"); + +#ifdef PCMCIA_DEBUG +#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0) + +INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG); +#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) +static char *version = +"axnet_cs.c 1.28 2002/06/29 06:27:37 (David Hinds)"; +#else +#define DEBUG(n, args...) +#endif + +/*====================================================================*/ + +static void axnet_config(dev_link_t *link); +static void axnet_release(dev_link_t *link); +static int axnet_event(event_t event, int priority, + event_callback_args_t *args); +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 struct ethtool_ops netdev_ethtool_ops; +static irqreturn_t ei_irq_wrapper(int irq, void *dev_id, struct pt_regs *regs); +static void ei_watchdog(u_long arg); +static void axnet_reset_8390(struct net_device *dev); + +static int mdio_read(kio_addr_t addr, int phy_id, int loc); +static void mdio_write(kio_addr_t 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 dev_link_t *axnet_attach(void); +static void axnet_detach(dev_link_t *); + +static dev_info_t dev_info = "axnet_cs"; +static dev_link_t *dev_list; + +static void axdev_setup(struct net_device *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, struct pt_regs *regs); + +/*====================================================================*/ + +typedef struct axnet_dev_t { + dev_link_t link; + 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; +} + +/*====================================================================== + + axnet_attach() creates an "instance" of the driver, allocating + local data structures for one device. The device is registered + with Card Services. + +======================================================================*/ + +static dev_link_t *axnet_attach(void) +{ + axnet_dev_t *info; + dev_link_t *link; + struct net_device *dev; + client_reg_t client_reg; + int ret; + + DEBUG(0, "axnet_attach()\n"); + + dev = alloc_netdev(sizeof(struct ei_device) + sizeof(axnet_dev_t), + "eth%d", axdev_setup); + + if (!dev) + return NULL; + + info = PRIV(dev); + link = &info->link; + link->priv = dev; + link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; + link->irq.IRQInfo1 = IRQ_LEVEL_ID; + link->conf.Attributes = CONF_ENABLE_IRQ; + link->conf.IntType = INT_MEMORY_AND_IO; + + dev->open = &axnet_open; + dev->stop = &axnet_close; + dev->do_ioctl = &axnet_ioctl; + SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops); + + /* Register with Card Services */ + link->next = dev_list; + dev_list = link; + client_reg.dev_info = &dev_info; + client_reg.EventMask = + CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL | + CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET | + CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME; + client_reg.event_handler = &axnet_event; + client_reg.Version = 0x0210; + client_reg.event_callback_args.client_data = link; + ret = pcmcia_register_client(&link->handle, &client_reg); + if (ret != CS_SUCCESS) { + cs_error(link->handle, RegisterClient, ret); + axnet_detach(link); + return NULL; + } + + return 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(dev_link_t *link) +{ + struct net_device *dev = link->priv; + dev_link_t **linkp; + + DEBUG(0, "axnet_detach(0x%p)\n", link); + + /* Locate device structure */ + for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) + if (*linkp == link) break; + if (*linkp == NULL) + return; + + if (link->dev) + unregister_netdev(dev); + + if (link->state & DEV_CONFIG) + axnet_release(link); + + if (link->handle) + pcmcia_deregister_client(link->handle); + + /* Unlink device structure, free bits */ + *linkp = link->next; + free_netdev(dev); +} /* axnet_detach */ + +/*====================================================================== + + This probes for a card's hardware address by reading the PROM. + +======================================================================*/ + +static int get_prom(dev_link_t *link) +{ + struct net_device *dev = link->priv; + kio_addr_t 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 < sizeof(program_seq)/sizeof(program_seq[0]); 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. + +======================================================================*/ + +#define CS_CHECK(fn, ret) \ +do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) + +static int try_io_port(dev_link_t *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->handle, &link->io); + if (ret == CS_SUCCESS) return ret; + } + return ret; + } else { + return pcmcia_request_io(link->handle, &link->io); + } +} + +static void axnet_config(dev_link_t *link) +{ + client_handle_t handle = link->handle; + struct net_device *dev = link->priv; + axnet_dev_t *info = PRIV(dev); + tuple_t tuple; + cisparse_t parse; + int i, j, last_ret, last_fn; + u_short buf[64]; + config_info_t conf; + + DEBUG(0, "axnet_config(0x%p)\n", link); + + tuple.Attributes = 0; + tuple.TupleData = (cisdata_t *)buf; + tuple.TupleDataMax = sizeof(buf); + tuple.TupleOffset = 0; + tuple.DesiredTuple = CISTPL_CONFIG; + CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); + CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple)); + CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse)); + link->conf.ConfigBase = parse.config.base; + /* don't trust the CIS on this; Linksys got it wrong */ + link->conf.Present = 0x63; + + /* Configure card */ + link->state |= DEV_CONFIG; + + /* Look up current Vcc */ + CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf)); + link->conf.Vcc = conf.Vcc; + + tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; + tuple.Attributes = 0; + CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); + while (last_ret == CS_SUCCESS) { + cistpl_cftable_entry_t *cfg = &(parse.cftable_entry); + cistpl_io_t *io = &(parse.cftable_entry.io); + + if (pcmcia_get_tuple_data(handle, &tuple) != 0 || + pcmcia_parse_tuple(handle, &tuple, &parse) != 0 || + cfg->index == 0 || cfg->io.nwin == 0) + goto next_entry; + + link->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); + link->io.BasePort2 = io->win[1-i].base; + link->io.NumPorts2 = io->win[1-i].len; + } else { + i = link->io.NumPorts2 = 0; + } + link->io.BasePort1 = io->win[i].base; + link->io.NumPorts1 = io->win[i].len; + link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; + if (link->io.NumPorts1 + link->io.NumPorts2 >= 32) { + last_ret = try_io_port(link); + if (last_ret == CS_SUCCESS) break; + } + next_entry: + last_ret = pcmcia_get_next_tuple(handle, &tuple); + } + if (last_ret != CS_SUCCESS) { + cs_error(handle, RequestIO, last_ret); + goto failed; + } + + CS_CHECK(RequestIRQ, pcmcia_request_irq(handle, &link->irq)); + + if (link->io.NumPorts2 == 8) { + link->conf.Attributes |= CONF_ENABLE_SPKR; + link->conf.Status = CCSR_AUDIO_ENA; + } + + CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf)); + 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); + 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->handle, ®); + for (i = 0; i < 32; i++) { + j = mdio_read(dev->base_addr + AXNET_MII_EEP, i, 1); + if ((j != 0) && (j != 0xffff)) break; + } + } + + info->phy_id = (i < 32) ? i : -1; + link->dev = &info->node; + link->state &= ~DEV_CONFIG_PENDING; + SET_NETDEV_DEV(dev, &handle_to_dev(handle)); + + if (register_netdev(dev) != 0) { + printk(KERN_NOTICE "axnet_cs: register_netdev() failed\n"); + link->dev = NULL; + goto failed; + } + + strcpy(info->node.dev_name, dev->name); + + printk(KERN_INFO "%s: Asix AX88%d90: io %#3lx, irq %d, hw_addr ", + dev->name, ((info->flags & IS_AX88790) ? 7 : 1), + dev->base_addr, dev->irq); + for (i = 0; i < 6; i++) + printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n")); + if (info->phy_id != -1) { + DEBUG(0, " MII transceiver at index %d, status %x.\n", info->phy_id, j); + } else { + printk(KERN_NOTICE " No MII transceivers found!\n"); + } + return; + +cs_failed: + cs_error(link->handle, last_fn, last_ret); +failed: + axnet_release(link); + link->state &= ~DEV_CONFIG_PENDING; + return; +} /* 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(dev_link_t *link) +{ + DEBUG(0, "axnet_release(0x%p)\n", link); + + pcmcia_release_configuration(link->handle); + pcmcia_release_io(link->handle, &link->io); + pcmcia_release_irq(link->handle, &link->irq); + + link->state &= ~DEV_CONFIG; +} + +/*====================================================================== + + The card status event handler. Mostly, this schedules other + stuff to run after an event is received. A CARD_REMOVAL event + also sets some flags to discourage the net drivers from trying + to talk to the card any more. + +======================================================================*/ + +static int axnet_event(event_t event, int priority, + event_callback_args_t *args) +{ + dev_link_t *link = args->client_data; + struct net_device *dev = link->priv; + + DEBUG(2, "axnet_event(0x%06x)\n", event); + + switch (event) { + case CS_EVENT_CARD_REMOVAL: + link->state &= ~DEV_PRESENT; + if (link->state & DEV_CONFIG) + netif_device_detach(dev); + break; + case CS_EVENT_CARD_INSERTION: + link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; + axnet_config(link); + break; + case CS_EVENT_PM_SUSPEND: + link->state |= DEV_SUSPEND; + /* Fall through... */ + case CS_EVENT_RESET_PHYSICAL: + if (link->state & DEV_CONFIG) { + if (link->open) + netif_device_detach(dev); + pcmcia_release_configuration(link->handle); + } + break; + case CS_EVENT_PM_RESUME: + link->state &= ~DEV_SUSPEND; + /* Fall through... */ + case CS_EVENT_CARD_RESET: + if (link->state & DEV_CONFIG) { + pcmcia_request_configuration(link->handle, &link->conf); + if (link->open) { + axnet_reset_8390(dev); + AX88190_init(dev, 1); + netif_device_attach(dev); + } + } + break; + } + return 0; +} /* axnet_event */ + +/*====================================================================== + + 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(kio_addr_t 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(kio_addr_t 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(kio_addr_t 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) +{ + axnet_dev_t *info = PRIV(dev); + dev_link_t *link = &info->link; + + DEBUG(2, "axnet_open('%s')\n", dev->name); + + if (!DEV_OK(link)) + return -ENODEV; + + link->open++; + + request_irq(dev->irq, ei_irq_wrapper, SA_SHIRQ, dev_info, dev); + + 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); + dev_link_t *link = &info->link; + + DEBUG(2, "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) +{ + kio_addr_t 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 pt_regs *regs) +{ + struct net_device *dev = dev_id; + PRIV(dev)->stale = 0; + return ax_interrupt(irq, dev_id, regs); +} + +static void ei_watchdog(u_long arg) +{ + struct net_device *dev = (struct net_device *)(arg); + axnet_dev_t *info = PRIV(dev); + kio_addr_t nic_base = dev->base_addr; + kio_addr_t 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, NULL); + 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 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); + u16 *data = (u16 *)&rq->ifr_ifru; + kio_addr_t mii_addr = dev->base_addr + AXNET_MII_EEP; + switch (cmd) { + case SIOCGMIIPHY: + data[0] = info->phy_id; + case SIOCGMIIREG: /* Read MII PHY register. */ + data[3] = mdio_read(mii_addr, data[0], data[1] & 0x1f); + return 0; + case SIOCSMIIREG: /* Write MII PHY register. */ + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + mdio_write(mii_addr, data[0], data[1] & 0x1f, data[2]); + return 0; + } + return -EOPNOTSUPP; +} + +/*====================================================================*/ + +static void get_8390_hdr(struct net_device *dev, + struct e8390_pkt_hdr *hdr, + int ring_page) +{ + kio_addr_t 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) +{ + kio_addr_t nic_base = dev->base_addr; + int xfer_count = count; + char *buf = skb->data; + +#ifdef PCMCIA_DEBUG + if ((ei_debug > 4) && (count != 4)) + printk(KERN_DEBUG "%s: [bi=%d]\n", dev->name, count+4); +#endif + 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) +{ + kio_addr_t nic_base = dev->base_addr; + +#ifdef PCMCIA_DEBUG + if (ei_debug > 4) + printk(KERN_DEBUG "%s: [bo=%d]\n", dev->name, count); +#endif + + /* 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_driver axnet_cs_driver = { + .owner = THIS_MODULE, + .drv = { + .name = "axnet_cs", + }, + .attach = axnet_attach, + .detach = axnet_detach, +}; + +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); + BUG_ON(dev_list != NULL); +} + +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 = + "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> + +#include <linux/etherdevice.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_tx_timeout(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 set_multicast_list(struct net_device *dev); +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); + +#ifdef HAVE_TX_TIMEOUT + /* The card I/O part of the driver (e.g. 3c503) can hook a Tx timeout + wrapper that does e.g. media check & then calls ei_tx_timeout. */ + if (dev->tx_timeout == NULL) + dev->tx_timeout = ei_tx_timeout; + if (dev->watchdog_timeo <= 0) + dev->watchdog_timeo = TX_TIMEOUT; +#endif + + /* + * 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. + */ +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; +} + +/** + * ei_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. + */ + +void ei_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; + + ei_local->stat.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= |