/*====================================================================== A PCMCIA ethernet driver for NS8390-based cards This driver supports the D-Link DE-650 and Linksys EthernetCard cards, the newer D-Link and Linksys combo cards, Accton EN2212 cards, the RPTI EP400, and the PreMax PE-200 in non-shared-memory mode, and the IBM Credit Card Adapter, the NE4100, the Thomas Conrad ethernet card, and the Kingston KNE-PCM/x in shared-memory mode. It will also handle the Socket EA card in either mode. Copyright (C) 1998 David A. Hinds -- dhinds@hyper.stanford.edu pcnet_cs.c 1.94 1999/07/29 06:04:49 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 Public License, incorporated herein by reference. Donald Becker may be reached at becker@cesdis1.gsfc.nasa.gov Based also on Keith Moore's changes to Don Becker's code, for IBM CCAE support. Drivers merged back together, and shared-memory Socket EA support added, by Ken Raeburn, September 1995. ======================================================================*/ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define PCNET_CMD 0x00 #define PCNET_DATAPORT 0x10 /* NatSemi-defined port window offset. */ #define PCNET_RESET 0x1f /* Issue a read to reset, a write to clear. */ #define PCNET_MISC 0x18 /* For IBM CCAE and Socket EA cards */ #define PCNET_START_PG 0x40 /* First page of TX buffer */ #define PCNET_STOP_PG 0x80 /* Last page +1 of RX ring */ /* Socket EA cards have a larger packet buffer */ #define SOCKET_START_PG 0x01 #define SOCKET_STOP_PG 0xff #define PCNET_RDC_TIMEOUT 0x02 /* Max wait in jiffies for Tx RDC */ static char *if_names[] = { "auto", "10baseT", "10base2"}; #ifdef PCMCIA_DEBUG static int pc_debug = PCMCIA_DEBUG; MODULE_PARM(pc_debug, "i"); #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) static char *version = "pcnet_cs.c 1.94 1999/07/29 06:04:49 (David Hinds)"; #else #define DEBUG(n, args...) #endif /*====================================================================*/ /* Parameters that can be set with 'insmod' */ /* Bit map of interrupts to choose from */ static u_int irq_mask = 0xdeb8; static int irq_list[4] = { -1 }; /* Transceiver type, for Socket EA and IBM CC cards. */ static int if_port = 1; /* Use 64K packet buffer, for Socket EA cards. */ static int use_big_buf = 1; /* Shared memory speed, in ns */ static int mem_speed = 0; /* Insert a pause in block_output after sending a packet */ static int delay_output = 0; /* Length of delay, in microseconds */ static int delay_time = 4; /* Use shared memory, if available? */ static int use_shmem = -1; /* Ugh! Let the user hardwire the hardware address for queer cards */ static int hw_addr[6] = { 0, /* ... */ }; MODULE_PARM(irq_mask, "i"); MODULE_PARM(irq_list, "1-4i"); MODULE_PARM(if_port, "i"); MODULE_PARM(use_big_buf, "i"); MODULE_PARM(mem_speed, "i"); MODULE_PARM(delay_output, "i"); MODULE_PARM(delay_time, "i"); MODULE_PARM(use_shmem, "i"); MODULE_PARM(hw_addr, "6i"); /*====================================================================*/ static void pcnet_config(dev_link_t *link); static void pcnet_release(u_long arg); static int pcnet_event(event_t event, int priority, event_callback_args_t *args); static int pcnet_open(struct device *dev); static int pcnet_close(struct device *dev); static void pcnet_reset_8390(struct device *dev); static int set_config(struct device *dev, struct ifmap *map); static int setup_shmem_window(dev_link_t *link, int start_pg, int stop_pg, int cm_offset); static int setup_dma_config(dev_link_t *link, int start_pg, int stop_pg); static dev_info_t dev_info = "pcnet_cs"; static dev_link_t *pcnet_attach(void); static void pcnet_detach(dev_link_t *); static dev_link_t *dev_list; /*====================================================================*/ typedef struct hw_info_t { u_long offset; u_char a0, a1, a2; u_long flags; } hw_info_t; #define DELAY_OUTPUT 0x01 #define HAS_MISC_REG 0x02 #define USE_BIG_BUF 0x04 #define HAS_IBM_MISC 0x08 #define IS_DL10019A 0x10 #define USE_SHMEM 0x80 /* autodetected */ static hw_info_t hw_info[] = { { /* Accton EN2212 */ 0x0ff0, 0x00, 0x00, 0xe8, DELAY_OUTPUT }, { /* Allied Telesis LA-PCM */ 0x0ff0, 0x00, 0x00, 0xf4, 0 }, { /* APEX MultiCard */ 0x03f4, 0x00, 0x20, 0xe5, 0 }, { /* ASANTE FriendlyNet */ 0x4910, 0x00, 0x00, 0x94, DELAY_OUTPUT | HAS_IBM_MISC }, { /* Danpex EN-6200P2 */ 0x0110, 0x00, 0x40, 0xc7, 0 }, { /* DataTrek NetCard */ 0x0ff0, 0x00, 0x20, 0xe8, 0 }, { /* Dayna CommuniCard E */ 0x0110, 0x00, 0x80, 0x19, 0 }, { /* D-Link DE-650 */ 0x0040, 0x00, 0x80, 0xc8, 0 }, { /* EP-210 Ethernet */ 0x0110, 0x00, 0x40, 0x33, 0 }, { /* EP4000 Ethernet */ 0x01c0, 0x00, 0x00, 0xb4, 0 }, { /* Epson EEN10B */ 0x0ff0, 0x00, 0x00, 0x48, HAS_MISC_REG | HAS_IBM_MISC }, { /* ELECOM Laneed LD-CDWA */ 0xb8, 0x08, 0x00, 0x42, 0 }, { /* Hypertec Ethernet */ 0x01c0, 0x00, 0x40, 0x4c, 0 }, { /* IBM CCAE */ 0x0ff0, 0x08, 0x00, 0x5a, HAS_MISC_REG | HAS_IBM_MISC }, { /* IBM CCAE */ 0x0ff0, 0x00, 0x04, 0xac, HAS_MISC_REG | HAS_IBM_MISC }, { /* IBM CCAE */ 0x0ff0, 0x00, 0x06, 0x29, HAS_MISC_REG | HAS_IBM_MISC }, { /* IBM FME */ 0x0374, 0x08, 0x00, 0x5a, HAS_MISC_REG | HAS_IBM_MISC }, { /* IBM FME */ 0x0374, 0x00, 0x04, 0xac, HAS_MISC_REG | HAS_IBM_MISC }, { /* Kansai KLA-PCM/T */ 0x0ff0, 0x00, 0x60, 0x87, HAS_MISC_REG | HAS_IBM_MISC }, { /* NSC DP83903 */ 0x0374, 0x00, 0xc0, 0xa8, HAS_MISC_REG | HAS_IBM_MISC }, { /* NSC DP83903 */ 0x0374, 0x00, 0xa0, 0xb0, HAS_MISC_REG | HAS_IBM_MISC }, { /* NSC DP83903 */ 0x0198, 0x00, 0x20, 0xe0, HAS_MISC_REG | HAS_IBM_MISC }, { /* I-O DATA PCLA/T */ 0x0ff0, 0x00, 0xa0, 0xb0, 0 }, { /* Katron PE-520 */ 0x0110, 0x00, 0x40, 0xf6, 0 }, { /* Kingston KNE-PCM/x */ 0x0ff0, 0x00, 0xc0, 0xf0, HAS_MISC_REG | HAS_IBM_MISC }, { /* Kingston KNE-PCM/x */ 0x0ff0, 0xe2, 0x0c, 0x0f, HAS_MISC_REG | HAS_IBM_MISC }, { /* Kingston KNE-PC2 */ 0x0180, 0x00, 0xc0, 0xf0, 0 }, { /* Maxtech PCN2000 */ 0x5000, 0x00, 0x00, 0xe8, 0 }, { /* NDC Instant-Link */ 0x003a, 0x00, 0x80, 0xc6, 0 }, { /* NE2000 Compatible */ 0x0ff0, 0x00, 0xa0, 0x0c, 0 }, { /* Network General Sniffer */ 0x0ff0, 0x00, 0x00, 0x65, HAS_MISC_REG | HAS_IBM_MISC }, { /* Panasonic VEL211 */ 0x0ff0, 0x00, 0x80, 0x45, HAS_MISC_REG | HAS_IBM_MISC }, { /* PreMax PE-200 */ 0x07f0, 0x00, 0x20, 0xe0, 0 }, { /* RPTI EP400 */ 0x0110, 0x00, 0x40, 0x95, 0 }, { /* SCM Ethernet */ 0x0ff0, 0x00, 0x20, 0xcb, 0 }, { /* Socket EA */ 0x4000, 0x00, 0xc0, 0x1b, DELAY_OUTPUT | HAS_MISC_REG | USE_BIG_BUF }, { /* SuperSocket RE450T */ 0x0110, 0x00, 0xe0, 0x98, 0 }, { /* Volktek NPL-402CT */ 0x0060, 0x00, 0x40, 0x05, 0 } }; #define NR_INFO (sizeof(hw_info)/sizeof(hw_info_t)) static hw_info_t default_info = { /* Unknown NE2000 Clone */ 0x00, 0x00, 0x00, 0x00, 0 }; static hw_info_t dl_fast_info = { /* D-Link EtherFast */ 0x00, 0x00, 0x00, 0x00, IS_DL10019A }; typedef struct pcnet_dev_t { struct device dev; dev_node_t node; u_long flags; caddr_t base; } pcnet_dev_t; /*====================================================================== This bit of code is used to avoid unregistering network devices at inappropriate times. 2.2 and later kernels are fairly picky about when this can happen. ======================================================================*/ static void flush_stale_links(void) { dev_link_t *link, *next; for (link = dev_list; link; link = next) { next = link->next; if (link->state & DEV_STALE_LINK) pcnet_detach(link); } } /*====================================================================*/ static void cs_error(client_handle_t handle, int func, int ret) { error_info_t err = { func, ret }; CardServices(ReportError, handle, &err); } /*====================================================================== We never need to do anything when a pcnet device is "initialized" by the net software, because we only register already-found cards. ======================================================================*/ static int pcnet_init(struct device *dev) { return 0; } /*====================================================================== pcnet_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 *pcnet_attach(void) { client_reg_t client_reg; dev_link_t *link; pcnet_dev_t *info; struct device *dev; int i, ret; DEBUG(0, "pcnet_attach()\n"); flush_stale_links(); /* Create new ethernet device */ link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL); memset(link, 0, sizeof(struct dev_link_t)); link->release.function = &pcnet_release; link->release.data = (u_long)link; link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID; if (irq_list[0] == -1) link->irq.IRQInfo2 = irq_mask; else for (i = 0; i < 4; i++) link->irq.IRQInfo2 |= 1 << irq_list[i]; link->conf.Attributes = CONF_ENABLE_IRQ; link->conf.Vcc = 50; link->conf.IntType = INT_MEMORY_AND_IO; info = kmalloc(sizeof(struct pcnet_dev_t), GFP_KERNEL); memset(info, 0, sizeof(struct pcnet_dev_t)); dev = &info->dev; ethdev_init(dev); dev->name = info->node.dev_name; dev->init = &pcnet_init; dev->open = &pcnet_open; dev->stop = &pcnet_close; dev->set_config = &set_config; dev->tbusy = 1; link->priv = info; /* Register with Card Services */ link->next = dev_list; dev_list = link; client_reg.dev_info = &dev_info; client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE; 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 = &pcnet_event; client_reg.Version = 0x0210; client_reg.event_callback_args.client_data = link; ret = CardServices(RegisterClient, &link->handle, &client_reg); if (ret != CS_SUCCESS) { cs_error(link->handle, RegisterClient, ret); pcnet_detach(link); return NULL; } return link; } /* pcnet_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 pcnet_detach(dev_link_t *link) { dev_link_t **linkp; long flags; DEBUG(0, "pcnet_detach(0x%p)\n", link); /* Locate device structure */ for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) if (*linkp == link) break; if (*linkp == NULL) return; save_flags(flags); cli(); if (link->state & DEV_RELEASE_PENDING) { del_timer(&link->release); link->state &= ~DEV_RELEASE_PENDING; } restore_flags(flags); if (link->state & DEV_CONFIG) { pcnet_release((u_long)link); if (link->state & DEV_STALE_CONFIG) { link->state |= DEV_STALE_LINK; return; } } if (link->handle) CardServices(DeregisterClient, link->handle); /* Unlink device structure, free bits */ *linkp = link->next; if (link->priv) { struct device *dev = link->priv; if (link->dev != NULL) unregister_netdev(dev); if (dev->priv) kfree_s(dev->priv, sizeof(struct ei_device)); kfree_s(dev, sizeof(struct pcnet_dev_t)); } kfree_s(link, sizeof(struct dev_link_t)); } /* pcnet_detach */ /*====================================================================== For the Linksys EtherFast 10/100 card ======================================================================*/ static hw_info_t *get_dl_fast(dev_link_t *link) { struct device *dev = link->priv; int i; u_char sum; for (sum = 0, i = 0x14; i < 0x1c; i++) sum += inb_p(dev->base_addr + i); if (sum != 0xff) return NULL; for (i = 0; i < 6; i++) dev->dev_addr[i] = inb_p(dev->base_addr + 0x14 + i); return &dl_fast_info; } /*====================================================================== This probes for a card's hardware address, for card types that encode this information in their CIS. ======================================================================*/ static hw_info_t *get_hwinfo(dev_link_t *link) { struct device *dev = link->priv; win_req_t req; memreq_t mem; u_char *base, *virt; int i, j; /* Allocate a small memory window */ req.Attributes = WIN_DATA_WIDTH_8|WIN_MEMORY_TYPE_AM|WIN_ENABLE; req.Base = 0; req.Size = 0; req.AccessSpeed = 0; link->win = (window_handle_t)link->handle; i = CardServices(RequestWindow, &link->win, &req); if (i != CS_SUCCESS) { cs_error(link->handle, RequestWindow, i); return NULL; } virt = ioremap(req.Base, req.Size); mem.Page = 0; for (i = 0; i < NR_INFO; i++) { mem.CardOffset = hw_info[i].offset & ~(req.Size-1); CardServices(MapMemPage, link->win, &mem); base = &virt[hw_info[i].offset & (req.Size-1)]; if ((readb(base+0) == hw_info[i].a0) && (readb(base+2) == hw_info[i].a1) && (readb(base+4) == hw_info[i].a2)) break; } if (i < NR_INFO) { for (j = 0; j < 6; j++) dev->dev_addr[j] = readb(base + (j<<1)); } iounmap(virt); j = CardServices(ReleaseWindow, link->win); if (j != CS_SUCCESS) cs_error(link->handle, ReleaseWindow, j); return (i < NR_INFO) ? hw_info+i : NULL; } /* get_hwinfo */ /*====================================================================== This probes for a card's hardware address by reading the PROM. It checks the address against a list of known types, then falls back to a simple NE2000 clone signature check. ======================================================================*/ static hw_info_t *get_prom(dev_link_t *link) { struct device *dev = link->priv; unsigned char prom[32]; int i, j, ioaddr; /* This is lifted straight from drivers/net/ne.c */ struct { unsigned char value, offset; } program_seq[] = { {E8390_NODMA+E8390_PAGE0+E8390_STOP, E8390_CMD}, /* Select page 0*/ {0x48, EN0_DCFG}, /* Set byte-wide (0x48) access. */ {0x00, EN0_RCNTLO}, /* Clear the count regs. */ {0x00, EN0_RCNTHI}, {0x00, EN0_IMR}, /* Mask completion irq. */ {0xFF, EN0_ISR}, {E8390_RXOFF, EN0_RXCR}, /* 0x20 Set to monitor */ {E8390_TXOFF, EN0_TXCR}, /* 0x02 and loopback mode. */ {32, EN0_RCNTLO}, {0x00, EN0_RCNTHI}, {0x00, EN0_RSARLO}, /* DMA starting at 0x0000. */ {0x00, EN0_RSARHI}, {E8390_RREAD+E8390_START, E8390_CMD}, }; ioaddr = dev->base_addr; pcnet_reset_8390(dev); udelay(10000); 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 < 32; i++) prom[i] = inb(ioaddr + PCNET_DATAPORT); for (i = 0; i < NR_INFO; i++) { if ((prom[0] == hw_info[i].a0) && (prom[2] == hw_info[i].a1) && (prom[4] == hw_info[i].a2)) break; } if ((i < NR_INFO) || ((prom[28] == 0x57) && (prom[30] == 0x57))) { for (j = 0; j < 6; j++) dev->dev_addr[j] = prom[j<<1]; return (i < NR_INFO) ? hw_info+i : &default_info; } return NULL; } /* get_prom */ /*====================================================================== This should be totally unnecessary... but when we can't figure out the hardware address any other way, we'll let the user hard wire it when the module is initialized. ======================================================================*/ static hw_info_t *get_hwired(dev_link_t *link) { struct device *dev = link->priv; int i; for (i = 0; i < 6; i++) if (hw_addr[i] != 0) break; if (i == 6) return NULL; for (i = 0; i < 6; i++) dev->dev_addr[i] = hw_addr[i]; return &default_info; } /* get_hwired */ /*====================================================================== pcnet_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, args...) \ while ((last_ret=CardServices(last_fn=(fn), args))!=0) goto cs_failed #define CFG_CHECK(fn, args...) \ if (CardServices(fn, args) != 0) goto next_entry 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) { for (j = 0; j < 0x400; j += 0x20) { link->io.BasePort1 = j ^ 0x300; link->io.BasePort2 = (j ^ 0x300) + 0x10; ret = CardServices(RequestIO, link->handle, &link->io); if (ret == CS_SUCCESS) return ret; } return ret; } else { return CardServices(RequestIO, link->handle, &link->io); } } static void pcnet_config(dev_link_t *link) { client_handle_t handle; tuple_t tuple; cisparse_t parse; pcnet_dev_t *info; struct device *dev; int i, last_ret, last_fn, start_pg, stop_pg, cm_offset; int manfid = 0, prodid = 0, has_shmem = 0; u_short buf[64]; hw_info_t *hw_info; handle = link->handle; info = link->priv; dev = &info->dev; DEBUG(0, "pcnet_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, handle, &tuple); CS_CHECK(GetTupleData, handle, &tuple); CS_CHECK(ParseTuple, handle, &tuple, &parse); link->conf.ConfigBase = parse.config.base; link->conf.Present = parse.config.rmask[0]; /* Configure card */ link->state |= DEV_CONFIG; tuple.DesiredTuple = CISTPL_MANFID; tuple.Attributes = TUPLE_RETURN_COMMON; if ((CardServices(GetFirstTuple, handle, &tuple) == CS_SUCCESS) && (CardServices(GetTupleData, handle, &tuple) == CS_SUCCESS)) { manfid = le16_to_cpu(buf[0]); prodid = le16_to_cpu(buf[1]); } tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; tuple.Attributes = 0; CS_CHECK(GetFirstTuple, handle, &tuple); while (last_ret == CS_SUCCESS) { cistpl_cftable_entry_t *cfg = &(parse.cftable_entry); cistpl_io_t *io = &(parse.cftable_entry.io); CFG_CHECK(GetTupleData, handle, &tuple); CFG_CHECK(ParseTuple, handle, &tuple, &parse); if ((cfg->index == 0) || (cfg->io.nwin == 0)) goto next_entry; link->conf.ConfigIndex = cfg->index; /* 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; } has_shmem = ((cfg->mem.nwin == 1) && (cfg->mem.win[0].len >= 0x4000)); link->io.BasePort1 = io->win[i].base; link->io.NumPorts1 = io->win[i].len; if (link->io.NumPorts1 + link->io.NumPorts2 >= 32) { last_ret = try_io_port(link); if (last_ret == CS_SUCCESS) break; } next_entry: last_ret = CardServices(GetNextTuple, handle, &tuple); } if (last_ret != CS_SUCCESS) { cs_error(handle, RequestIO, last_ret); goto failed; } CS_CHECK(RequestIRQ, handle, &link->irq); if (link->io.NumPorts2 == 8) { link->conf.Attributes |= CONF_ENABLE_SPKR; link->conf.Status = CCSR_AUDIO_ENA; } if ((manfid == MANFID_IBM) && (prodid == PRODID_IBM_HOME_AND_AWAY)) link->conf.ConfigIndex |= 0x10; CS_CHECK(RequestConfiguration, handle, &link->conf); dev->irq = link->irq.AssignedIRQ; dev->base_addr = link->io.BasePort1; if ((if_port == 1) || (if_port == 2)) dev->if_port = if_port; else printk(KERN_NOTICE "pcnet_cs: invalid if_port requested\n"); dev->tbusy = 0; if (register_netdev(dev) != 0) { printk(KERN_NOTICE "pcnet_cs: register_netdev() failed\n"); goto failed; } hw_info = get_hwinfo(link); if (hw_info == NULL) hw_info = get_prom(link); if (hw_info == NULL) hw_info = get_dl_fast(link); if (hw_info == NULL) hw_info = get_hwired(link); if (hw_info == NULL) { printk(KERN_NOTICE "pcnet_cs: unable to read hardware net address\n"); goto config_undo; } info->flags = hw_info->flags; /* Check for user overrides */ info->flags |= (delay_output) ? DELAY_OUTPUT : 0; if ((manfid == MANFID_SOCKET) && (prodid == PRODID_SOCKET_LPE)) info->flags &= ~USE_BIG_BUF; if (!use_big_buf) info->flags &= ~USE_BIG_BUF; if (info->flags & USE_BIG_BUF) { start_pg = SOCKET_START_PG; stop_pg = SOCKET_STOP_PG; cm_offset = 0x10000; } else { start_pg = PCNET_START_PG; stop_pg = PCNET_STOP_PG; cm_offset = 0; } /* has_shmem is ignored if use_shmem != -1 */ if ((use_shmem == 0) || (!has_shmem && (use_shmem == -1)) || (setup_shmem_window(link, start_pg, stop_pg, cm_offset) != 0)) setup_dma_config(link, start_pg, stop_pg); ei_status.name = "NE2000"; ei_status.word16 = 1; ei_status.reset_8390 = &pcnet_reset_8390; link->dev = &info->node; link->state &= ~DEV_CONFIG_PENDING; printk(KERN_INFO "%s: NE2000 Compatible: io %#3lx, irq %d,", dev->name, dev->base_addr, dev->irq); if (info->flags & USE_SHMEM) printk (" mem %#5lx,", dev->mem_start); if (info->flags & HAS_MISC_REG) printk(" %s xcvr,", if_names[dev->if_port]); printk(" hw_addr "); for (i = 0; i < 6; i++) printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n")); return; config_undo: unregister_netdev(dev); goto failed; cs_failed: cs_error(link->handle, last_fn, last_ret); failed: pcnet_release((u_long)link); return; } /* pcnet_config */ /*====================================================================== After a card is removed, pcnet_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 pcnet_release(u_long arg) { dev_link_t *link = (dev_link_t *)arg; pcnet_dev_t *info = link->priv; DEBUG(0, "pcnet_release(0x%p)\n", link); if (link->open) { DEBUG(1, "pcnet_cs: release postponed, '%s' still open\n", info->node.dev_name); link->state |= DEV_STALE_CONFIG; return; } if (info->flags & USE_SHMEM) { iounmap(info->base); CardServices(ReleaseWindow, link->win); } CardServices(ReleaseConfiguration, link->handle); CardServices(ReleaseIO, link->handle, &link->io); CardServices(ReleaseIRQ, link->handle, &link->irq); link->state &= ~(DEV_CONFIG | DEV_RELEASE_PENDING); } /* pcnet_release */ /*====================================================================== 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 pcnet_event(event_t event, int priority, event_callback_args_t *args) { dev_link_t *link = args->client_data; pcnet_dev_t *info = link->priv; DEBUG(2, "pcnet_event(0x%06x)\n", event); switch (event) { case CS_EVENT_CARD_REMOVAL: link->state &= ~DEV_PRESENT; if (link->state & DEV_CONFIG) { info->dev.tbusy = 1; info->dev.start = 0; link->release.expires = RUN_AT(HZ/20); link->state |= DEV_RELEASE_PENDING; add_timer(&link->release); } break; case CS_EVENT_CARD_INSERTION: link->state |= DEV_PRESENT; pcnet_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) { info->dev.tbusy = 1; info->dev.start = 0; } CardServices(ReleaseConfiguration, link->handle); } break; case CS_EVENT_PM_RESUME: link->state &= ~DEV_SUSPEND; /* Fall through... */ case CS_EVENT_CARD_RESET: if (link->state & DEV_CONFIG) { CardServices(RequestConfiguration, link->handle, &link->conf); if (link->open) { pcnet_reset_8390(&info->dev); NS8390_init(&info->dev, 1); info->dev.tbusy = 0; info->dev.start = 1; } } break; } return 0; } /* pcnet_event */ /*====================================================================*/ static void set_misc_reg(struct device *dev) { int nic_base = dev->base_addr; pcnet_dev_t *info = (pcnet_dev_t *)dev; u_char tmp; if (info->flags & HAS_MISC_REG) { tmp = inb_p(nic_base + PCNET_MISC) & ~3; if (dev->if_port == 2) tmp |= 1; if (info->flags & USE_BIG_BUF) tmp |= 2; if (info->flags & HAS_IBM_MISC) tmp |= 8; outb_p(tmp, nic_base + PCNET_MISC); } } /*====================================================================*/ static int pcnet_open(struct device *dev) { pcnet_dev_t *info = (pcnet_dev_t *)dev; dev_link_t *link; DEBUG(2, "pcnet_open('%s')\n", dev->name); for (link = dev_list; link; link = link->next) if (link->priv == dev) break; if (!DEV_OK(link)) return -ENODEV; link->open++; MOD_INC_USE_COUNT; /* For D-Link EtherFast, wait for something(?) to happen */ if (info->flags & IS_DL10019A) { int i; for (i = 0; i < 20; i++) { if ((inb(dev->base_addr+0x1c) & 0x01) == 0) break; current->state = TASK_INTERRUPTIBLE; schedule_timeout(HZ/10); } } set_misc_reg(dev); request_irq(dev->irq, ei_interrupt, SA_SHIRQ, dev_info, dev); return ei_open(dev); } /* pcnet_open */ /*====================================================================*/ static int pcnet_close(struct device *dev) { dev_link_t *link; DEBUG(2, "pcnet_close('%s')\n", dev->name); for (link = dev_list; link; link = link->next) if (link->priv == dev) break; if (link == NULL) return -ENODEV; free_irq(dev->irq, dev); link->open--; dev->start = 0; if (link->state & DEV_STALE_CONFIG) { link->release.expires = RUN_AT(HZ/20); link->state |= DEV_RELEASE_PENDING; add_timer(&link->release); } MOD_DEC_USE_COUNT; return 0; } /* pcnet_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 pcnet_reset_8390(struct device *dev) { int nic_base = dev->base_addr; int i; ei_status.txing = ei_status.dmaing = 0; outb(inb(nic_base + PCNET_RESET), nic_base + PCNET_RESET); for (i = 0; i < 100; i++) { if ((inb_p(nic_base+EN0_ISR) & ENISR_RESET) != 0) break; udelay(100L); } outb_p(ENISR_RESET, nic_base + EN0_ISR); /* Ack intr. */ if (i == 100) printk(KERN_ERR "%s: pcnet_reset_8390() did not complete.\n", dev->name); set_misc_reg(dev); } /* pcnet_reset_8390 */ /* ======================================================================= */ static int set_config(struct device *dev, struct ifmap *map) { pcnet_dev_t *info = (pcnet_dev_t *)dev; if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) { if ((map->port != 0) && !(info->flags & HAS_MISC_REG)) { printk(KERN_NOTICE "%s: transceiver selection not " "implemented\n", dev->name); return -EINVAL; } if ((map->port == 1) || (map->port == 2)) { dev->if_port = map->port; printk(KERN_INFO "%s: switched to %s port\n", dev->name, if_names[dev->if_port]); } else return -EINVAL; } return 0; } /* ======================================================================= */ static void dma_get_8390_hdr(struct device *dev, struct e8390_pkt_hdr *hdr, int ring_page) { int nic_base = dev->base_addr; if (ei_status.dmaing) { printk(KERN_NOTICE "%s: DMAing conflict in dma_block_input." "[DMAstat:%1x][irqlock:%1x][intr:%ld]\n", dev->name, ei_status.dmaing, ei_status.irqlock, (long)dev->interrupt); return; } ei_status.dmaing |= 0x01; outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base + PCNET_CMD); outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO); outb_p(0, nic_base + EN0_RCNTHI); 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 + PCNET_CMD); insw_ns(nic_base + PCNET_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1); /* Fix for big endian systems */ hdr->count = le16_to_cpu(hdr->count); outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ ei_status.dmaing &= ~0x01; } /* ======================================================================= */ static void dma_block_input(struct device *dev, int count, struct sk_buff *skb, int ring_offset) { 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 if (ei_status.dmaing) { printk(KERN_NOTICE "%s: DMAing conflict in dma_block_input." "[DMAstat:%1x][irqlock:%1x][intr:%ld]\n", dev->name, ei_status.dmaing, ei_status.irqlock, (long)dev->interrupt); return; } ei_status.dmaing |= 0x01; outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base + PCNET_CMD); outb_p(count & 0xff, nic_base + EN0_RCNTLO); outb_p(count >> 8, nic_base + EN0_RCNTHI); 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 + PCNET_CMD); insw_ns(nic_base + PCNET_DATAPORT,buf,count>>1); if (count & 0x01) buf[count-1] = inb(nic_base + PCNET_DATAPORT), xfer_count++; /* This was for the ALPHA version only, but enough people have encountering problems that it is still here. */ #ifdef PCMCIA_DEBUG if (ei_debug > 4) { /* DMA termination address check... */ int addr, tries = 20; do { /* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here -- it's broken for Rx on some cards! */ int high = inb_p(nic_base + EN0_RSARHI); int low = inb_p(nic_base + EN0_RSARLO); addr = (high << 8) + low; if (((ring_offset + xfer_count) & 0xff) == (addr & 0xff)) break; } while (--tries > 0); if (tries <= 0) printk(KERN_NOTICE "%s: RX transfer address mismatch," "%#4.4x (expected) vs. %#4.4x (actual).\n", dev->name, ring_offset + xfer_count, addr); } #endif outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ ei_status.dmaing &= ~0x01; } /* dma_block_input */ /*====================================================================*/ static void dma_block_output(struct device *dev, int count, const unsigned char *buf, const int start_page) { int nic_base = dev->base_addr; pcnet_dev_t *info = (pcnet_dev_t *)dev; #ifdef PCMCIA_DEBUG int retries = 0; #endif u_long dma_start; #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++; if (ei_status.dmaing) { printk(KERN_NOTICE "%s: DMAing conflict in dma_block_output." "[DMAstat:%1x][irqlock:%1x][intr:%ld]\n", dev->name, ei_status.dmaing, ei_status.irqlock, (long)dev->interrupt); return; } ei_status.dmaing |= 0x01; /* We should already be in page 0, but to be safe... */ outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base+PCNET_CMD); #ifdef PCMCIA_DEBUG retry: #endif outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Now the normal output. */ outb_p(count & 0xff, nic_base + EN0_RCNTLO); outb_p(count >> 8, nic_base + EN0_RCNTHI); outb_p(0x00, nic_base + EN0_RSARLO); outb_p(start_page, nic_base + EN0_RSARHI); outb_p(E8390_RWRITE+E8390_START, nic_base + PCNET_CMD); outsw_ns(nic_base + PCNET_DATAPORT, buf, count>>1); dma_start = jiffies; #ifdef PCMCIA_DEBUG /* This was for the ALPHA version only, but enough people have encountering problems that it is still here. */ if (ei_debug > 4) { /* DMA termination address check... */ int addr, tries = 20; do { int high = inb_p(nic_base + EN0_RSARHI); int low = inb_p(nic_base + EN0_RSARLO); addr = (high << 8) + low; if ((start_page << 8) + count == addr) break; } while (--tries > 0); if (tries <= 0) { printk(KERN_NOTICE "%s: Tx packet transfer address mismatch," "%#4.4x (expected) vs. %#4.4x (actual).\n", dev->name, (start_page << 8) + count, addr); if (retries++ == 0) goto retry; } } #endif while ((inb_p(nic_base + EN0_ISR) & ENISR_RDC) == 0) if (jiffies - dma_start > PCNET_RDC_TIMEOUT) { printk(KERN_NOTICE "%s: timeout waiting for Tx RDC.\n", dev->name); pcnet_reset_8390(dev); NS8390_init(dev, 1); break; } outb_p(ENISR_RDC, nic_base + EN0_ISR); /* Ack intr. */ if (info->flags & DELAY_OUTPUT) udelay((long)delay_time); ei_status.dmaing &= ~0x01; } /*====================================================================*/ static int setup_dma_config(dev_link_t *link, int start_pg, int stop_pg) { struct device *dev = link->priv; ei_status.tx_start_page = start_pg; ei_status.rx_start_page = start_pg + TX_PAGES; ei_status.stop_page = stop_pg; /* set up block i/o functions */ ei_status.get_8390_hdr = &dma_get_8390_hdr; ei_status.block_input = &dma_block_input; ei_status.block_output = &dma_block_output; return 0; } /*====================================================================*/ static void copyin(unsigned char *dest, unsigned char *src, int c) { unsigned short *d = (unsigned short *) dest; unsigned short *s = (unsigned short *) src; int odd; if (c <= 0) return; odd = (c & 01); c >>= 1; if (c) { do { *d++ = readw_ns(s++); } while (--c); } /* get last byte by fetching a word and masking */ if (odd) *((unsigned char *)d) = readw(s) & 0xff; } static void copyout(unsigned char *dest, const unsigned char *src, int c) { volatile unsigned short *d = (unsigned short *) dest; unsigned short *s = (unsigned short *) src; int odd; if (c <= 0) return; odd = (c & 01); c >>= 1; if (c) { do { writew_ns(*s++, d++); } while (--c); } /* copy last byte doing a read-modify-write */ if (odd) writew((readw(d) & 0xff00) | *(u_char *)s, d); } /*====================================================================*/ static void shmem_get_8390_hdr(struct device *dev, struct e8390_pkt_hdr *hdr, int ring_page) { void *xfer_start = (void *)(dev->rmem_start + (ring_page << 8) - (ei_status.rx_start_page << 8)); copyin((void *)hdr, xfer_start, sizeof(struct e8390_pkt_hdr)); /* Fix for big endian systems */ hdr->count = le16_to_cpu(hdr->count); } /*====================================================================*/ static void shmem_block_input(struct device *dev, int count, struct sk_buff *skb, int ring_offset) { void *xfer_start = (void *)(dev->rmem_start + ring_offset - (ei_status.rx_start_page << 8)); char *buf = skb->data; if (xfer_start + count > (void *)dev->rmem_end) { /* We must wrap the input move. */ int semi_count = (void*)dev->rmem_end - xfer_start; copyin(buf, xfer_start, semi_count); buf += semi_count; ring_offset = ei_status.rx_start_page << 8; xfer_start = (void *)dev->rmem_start; count -= semi_count; } copyin(buf, xfer_start, count); } /*====================================================================*/ static void shmem_block_output(struct device *dev, int count, const unsigned char *buf, const int start_page) { void *shmem = (void *)dev->mem_start + (start_page << 8); shmem -= ei_status.tx_start_page << 8; if (ei_debug > 4) printk(KERN_DEBUG "[bo=%d @ %x]\n", count, start_page); copyout(shmem, buf, count); } /*====================================================================*/ static int setup_shmem_window(dev_link_t *link, int start_pg, int stop_pg, int cm_offset) { struct device *dev = link->priv; pcnet_dev_t *info = link->priv; win_req_t req; memreq_t mem; int i, window_size, offset, last_ret, last_fn; window_size = (stop_pg - start_pg) << 8; if (window_size > 32 * 1024) window_size = 32 * 1024; /* Make sure it's a power of two. */ while ((window_size & (window_size - 1)) != 0) window_size += window_size & ~(window_size - 1); /* Allocate a memory window */ req.Attributes = WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM|WIN_ENABLE; req.Attributes |= WIN_USE_WAIT; req.Base = 0; req.Size = window_size; req.AccessSpeed = mem_speed; link->win = (window_handle_t)link->handle; CS_CHECK(RequestWindow, &link->win, &req); mem.CardOffset = (start_pg << 8) + cm_offset; offset = mem.CardOffset % window_size; mem.CardOffset -= offset; mem.Page = 0; CS_CHECK(MapMemPage, link->win, &mem); /* Try scribbling on the buffer */ info->base = ioremap(req.Base, window_size); for (i = 0; i < (TX_PAGES<<8); i += 2) writew_ns((i>>1), info->base+offset+i); udelay(100); for (i = 0; i < (TX_PAGES<<8); i += 2) if (readw_ns(info->base+offset+i) != (i>>1)) break; pcnet_reset_8390(dev); if (i != (TX_PAGES<<8)) { iounmap(info->base); CardServices(ReleaseWindow, link->win); info->base = NULL; link->win = NULL; goto failed; } dev->mem_start = (u_long)info->base + offset; dev->rmem_start = dev->mem_start + (TX_PAGES<<8); dev->mem_end = dev->rmem_end = (u_long)info->base + req.Size; ei_status.tx_start_page = start_pg; ei_status.rx_start_page = start_pg + TX_PAGES; ei_status.stop_page = start_pg + ((req.Size - offset) >> 8); /* set up block i/o functions */ ei_status.get_8390_hdr = &shmem_get_8390_hdr; ei_status.block_input = &shmem_block_input; ei_status.block_output = &shmem_block_output; info->flags |= USE_SHMEM; return 0; cs_failed: cs_error(link->handle, last_fn, last_ret); failed: return 1; } /*====================================================================*/ int init_module(void) { servinfo_t serv; DEBUG(0, "%s\n", version); CardServices(GetCardServicesInfo, &serv); if (serv.Revision != CS_RELEASE_CODE) { printk(KERN_NOTICE "pcnet_cs: Card Services release " "does not match!\n"); return -1; } register_pcmcia_driver(&dev_info, &pcnet_attach, &pcnet_detach); return 0; } void cleanup_module(void) { DEBUG(0, "pcnet_cs: unloading\n"); unregister_pcmcia_driver(&dev_info); while (dev_list != NULL) pcnet_detach(dev_list); }