diff options
Diffstat (limited to 'drivers/net/pcmcia/axnet_cs.c')
| -rw-r--r-- | drivers/net/pcmcia/axnet_cs.c | 1827 |
1 files changed, 0 insertions, 1827 deletions
diff --git a/drivers/net/pcmcia/axnet_cs.c b/drivers/net/pcmcia/axnet_cs.c deleted file mode 100644 index ce95c5d168f..00000000000 --- a/drivers/net/pcmcia/axnet_cs.c +++ /dev/null @@ -1,1827 +0,0 @@ -/*====================================================================== - - 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/crc32.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"); - -#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 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 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 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); - -/*====================================================================*/ - -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; -} - -/*====================================================================== - - 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; - - DEBUG(0, "axnet_attach()\n"); - - dev = alloc_netdev(sizeof(struct ei_device) + sizeof(axnet_dev_t), - "eth%d", axdev_setup); - - if (!dev) - return -ENOMEM; - - 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->open = &axnet_open; - dev->stop = &axnet_close; - dev->do_ioctl = &axnet_ioctl; - SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops); - - 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; - - DEBUG(0, "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. - -======================================================================*/ - -#define CS_CHECK(fn, ret) \ -do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) - -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 == CS_SUCCESS) return ret; - } - return ret; - } else { - return pcmcia_request_io(link, &link->io); - } -} - -static int axnet_config(struct pcmcia_device *link) -{ - 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]; - DECLARE_MAC_BUF(mac); - - DEBUG(0, "axnet_config(0x%p)\n", link); - - tuple.Attributes = 0; - tuple.TupleData = (cisdata_t *)buf; - tuple.TupleDataMax = sizeof(buf); - tuple.TupleOffset = 0; - - /* don't trust the CIS on this; Linksys got it wrong */ - link->conf.Present = 0x63; - - tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; - tuple.Attributes = 0; - CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &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(link, &tuple) != 0 || - pcmcia_parse_tuple(link, &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(link, &tuple); - } - if (last_ret != CS_SUCCESS) { - cs_error(link, RequestIO, last_ret); - goto failed; - } - - CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &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(link, &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, ®); - 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_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 %s\n", - dev->name, ((info->flags & IS_AX88790) ? 7 : 1), - dev->base_addr, dev->irq, - print_mac(mac, dev->dev_addr)); - 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 0; - -cs_failed: - cs_error(link, last_fn, last_ret); -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; - - DEBUG(2, "axnet_open('%s')\n", dev->name); - - if (!pcmcia_dev_present(link)) - return -ENODEV; - - 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; - - 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) -{ - 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); - u16 *data = (u16 *)&rq->ifr_ifru; - unsigned int 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) -{ - 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; - -#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) -{ - unsigned int 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_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("Linksys", "EtherFast 10/100 PC Card (PCMPC100 V3)", 0x0733cc81, 0x232019a8), - PCMCIA_DEVICE_PROD_ID12("MELCO", "LPC3-TX", 0x481e0094, 0xf91af609), - 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 = - "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. - */ -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; -} - -/** - * 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. - */ - -static 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=%#2x, ISR=%#2x, t=%d.\n", - dev->name, (txsr & ENTSR_ABT) ? "excess collisions." : - (isr) ? "lost interrupt?" : "cable problem?", txsr, isr, tickssofar); - - if (!isr && !ei_local->stat.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); -} - -/** - * ei_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 int ei_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); - ei_local->stat.tx_errors++; - return 1; - } - - /* - * 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); - ei_local->stat.tx_bytes += send_length; - - return 0; -} - -/** - * ax_interrupt - handle the interrupts from an 8390 - * @irq: interrupt number - * @dev_id: a pointer to the net_device - * @regs: unused - * - * 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) - { - ei_local->stat.rx_frame_errors += inb_p(e8390_base + EN0_COUNTER0); - ei_local->stat.rx_crc_errors += inb_p(e8390_base + EN0_COUNTER1); - ei_local->stat.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; - struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); - 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 - { - ei_local->stat.tx_errors++; - if (txsr & ENTSR_CRS) ei_local->stat.tx_carrier_errors++; - if (txsr & ENTSR_CDH) ei_local->stat.tx_heartbeat_errors++; - if (txsr & ENTSR_OWC) ei_local->stat.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) - ei_local->stat.collisions++; - if (status & ENTSR_PTX) - ei_local->stat.tx_packets++; - else - { - ei_local->stat.tx_errors++; - if (status & ENTSR_ABT) - { - ei_local->stat.tx_aborted_errors++; - ei_local->stat.collisions += 16; - } - if (status & ENTSR_CRS) - ei_local->stat.tx_carrier_errors++; - if (status & ENTSR_FU) - ei_local->stat.tx_fifo_errors++; - if (status & ENTSR_CDH) - ei_local->stat.tx_heartbeat_errors++; - if (status & ENTSR_OWC) - ei_local->stat.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); - ei_local->stat.rx_errors++; - ei_local->stat.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); - ei_local->stat.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->last_rx = jiffies; - ei_local->stat.rx_packets++; - ei_local->stat.rx_bytes += pkt_len; - if (pkt_stat & ENRSR_PHY) - ei_local->stat.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); - ei_local->stat.rx_errors++; - /* NB: The NIC counts CRC, frame and missed errors. */ - if (pkt_stat & ENRSR_FO) - ei_local->stat.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; - struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev); - - /* - * 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); - ei_local->stat.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 &ei_local->stat; - - spin_lock_irqsave(&ei_local->page_lock,flags); - /* Read the counter registers, assuming we are in page 0. */ - ei_local->stat.rx_frame_errors += inb_p(ioaddr + EN0_COUNTER0); - ei_local->stat.rx_crc_errors += inb_p(ioaddr + EN0_COUNTER1); - ei_local->stat.rx_missed_errors+= inb_p(ioaddr + EN0_COUNTER2); - spin_unlock_irqrestore(&ei_local->page_lock, flags); - - return &ei_local->stat; -} - -/* - * 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); -} - -/** - * axdev_setup - init rest of 8390 device struct - * @dev: network device structure to init - * - * Initialize the rest of the 8390 device structure. Do NOT __init - * this, as it is used by 8390 based modular drivers too. - */ - -static void axdev_setup(struct net_device *dev) -{ - struct ei_device *ei_local; - if (ei_debug > 1) - printk(version_8390); - - ei_local = (struct ei_device *)netdev_priv(dev); - spin_lock_init(&ei_local->page_lock); - - dev->hard_start_xmit = &ei_start_xmit; - dev->get_stats = get_stats; - dev->set_multicast_list = &set_multicast_list; - - ether_setup(dev); -} - -/* 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 (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); -} |