diff options
| -rw-r--r-- | drivers/net/dm9000.c | 1016 |
1 files changed, 498 insertions, 518 deletions
diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c index 79538ab4ee6..679c291107f 100644 --- a/drivers/net/dm9000.c +++ b/drivers/net/dm9000.c @@ -152,23 +152,6 @@ static inline board_info_t *to_dm9000_board(struct net_device *dev) return dev->priv; } -/* function declaration ------------------------------------- */ -static int dm9000_open(struct net_device *); -static int dm9000_start_xmit(struct sk_buff *, struct net_device *); -static int dm9000_stop(struct net_device *); - -static void dm9000_init_dm9000(struct net_device *); - -static irqreturn_t dm9000_interrupt(int, void *); - -static int dm9000_phy_read(struct net_device *dev, int phy, int reg); -static void dm9000_phy_write(struct net_device *dev, int phy, int reg, int v); - -static void dm9000_read_eeprom(board_info_t *, int addr, u8 *to); -static void dm9000_write_eeprom(board_info_t *, int addr, u8 *dp); -static void dm9000_rx(struct net_device *); -static void dm9000_hash_table(struct net_device *); - /* DM9000 network board routine ---------------------------- */ static void @@ -315,49 +298,129 @@ static void dm9000_schedule_poll(board_info_t *db) schedule_delayed_work(&db->phy_poll, HZ * 2); } -/* Our watchdog timed out. Called by the networking layer */ -static void dm9000_timeout(struct net_device *dev) +static int dm9000_ioctl(struct net_device *dev, struct ifreq *req, int cmd) +{ + board_info_t *dm = to_dm9000_board(dev); + + if (!netif_running(dev)) + return -EINVAL; + + return generic_mii_ioctl(&dm->mii, if_mii(req), cmd, NULL); +} + +static unsigned int +dm9000_read_locked(board_info_t *db, int reg) { - board_info_t *db = (board_info_t *) dev->priv; - u8 reg_save; unsigned long flags; + unsigned int ret; - /* Save previous register address */ - reg_save = readb(db->io_addr); - spin_lock_irqsave(&db->lock,flags); + spin_lock_irqsave(&db->lock, flags); + ret = ior(db, reg); + spin_unlock_irqrestore(&db->lock, flags); - netif_stop_queue(dev); - dm9000_reset(db); - dm9000_init_dm9000(dev); - /* We can accept TX packets again */ - dev->trans_start = jiffies; - netif_wake_queue(dev); + return ret; +} - /* Restore previous register address */ - writeb(reg_save, db->io_addr); - spin_unlock_irqrestore(&db->lock,flags); +static int dm9000_wait_eeprom(board_info_t *db) +{ + unsigned int status; + int timeout = 8; /* wait max 8msec */ + + /* The DM9000 data sheets say we should be able to + * poll the ERRE bit in EPCR to wait for the EEPROM + * operation. From testing several chips, this bit + * does not seem to work. + * + * We attempt to use the bit, but fall back to the + * timeout (which is why we do not return an error + * on expiry) to say that the EEPROM operation has + * completed. + */ + + while (1) { + status = dm9000_read_locked(db, DM9000_EPCR); + + if ((status & EPCR_ERRE) == 0) + break; + + if (timeout-- < 0) { + dev_dbg(db->dev, "timeout waiting EEPROM\n"); + break; + } + } + + return 0; } -#ifdef CONFIG_NET_POLL_CONTROLLER /* - *Used by netconsole + * Read a word data from EEPROM */ -static void dm9000_poll_controller(struct net_device *dev) +static void +dm9000_read_eeprom(board_info_t *db, int offset, u8 *to) { - disable_irq(dev->irq); - dm9000_interrupt(dev->irq,dev); - enable_irq(dev->irq); + unsigned long flags; + + if (db->flags & DM9000_PLATF_NO_EEPROM) { + to[0] = 0xff; + to[1] = 0xff; + return; + } + + mutex_lock(&db->addr_lock); + + spin_lock_irqsave(&db->lock, flags); + + iow(db, DM9000_EPAR, offset); + iow(db, DM9000_EPCR, EPCR_ERPRR); + + spin_unlock_irqrestore(&db->lock, flags); + + dm9000_wait_eeprom(db); + + /* delay for at-least 150uS */ + msleep(1); + + spin_lock_irqsave(&db->lock, flags); + + iow(db, DM9000_EPCR, 0x0); + + to[0] = ior(db, DM9000_EPDRL); + to[1] = ior(db, DM9000_EPDRH); + + spin_unlock_irqrestore(&db->lock, flags); + + mutex_unlock(&db->addr_lock); } -#endif -static int dm9000_ioctl(struct net_device *dev, struct ifreq *req, int cmd) +/* + * Write a word data to SROM + */ +static void +dm9000_write_eeprom(board_info_t *db, int offset, u8 *data) { - board_info_t *dm = to_dm9000_board(dev); + unsigned long flags; - if (!netif_running(dev)) - return -EINVAL; + if (db->flags & DM9000_PLATF_NO_EEPROM) + return; - return generic_mii_ioctl(&dm->mii, if_mii(req), cmd, NULL); + mutex_lock(&db->addr_lock); + + spin_lock_irqsave(&db->lock, flags); + iow(db, DM9000_EPAR, offset); + iow(db, DM9000_EPDRH, data[1]); + iow(db, DM9000_EPDRL, data[0]); + iow(db, DM9000_EPCR, EPCR_WEP | EPCR_ERPRW); + spin_unlock_irqrestore(&db->lock, flags); + + dm9000_wait_eeprom(db); + + mdelay(1); /* wait at least 150uS to clear */ + + spin_lock_irqsave(&db->lock, flags); + iow(db, DM9000_EPCR, 0); + spin_unlock_irqrestore(&db->lock, flags); + + mutex_unlock(&db->addr_lock); } /* ethtool ops */ @@ -527,271 +590,55 @@ static unsigned char dm9000_type_to_char(enum dm9000_type type) return '?'; } -#define res_size(_r) (((_r)->end - (_r)->start) + 1) - /* - * Search DM9000 board, allocate space and register it + * Set DM9000 multicast address */ -static int __devinit -dm9000_probe(struct platform_device *pdev) +static void +dm9000_hash_table(struct net_device *dev) { - struct dm9000_plat_data *pdata = pdev->dev.platform_data; - struct board_info *db; /* Point a board information structure */ - struct net_device *ndev; - const unsigned char *mac_src; - int ret = 0; - int iosize; - int i; - u32 id_val; - - /* Init network device */ - ndev = alloc_etherdev(sizeof (struct board_info)); - if (!ndev) { - dev_err(&pdev->dev, "could not allocate device.\n"); - return -ENOMEM; - } - - SET_NETDEV_DEV(ndev, &pdev->dev); - - dev_dbg(&pdev->dev, "dm9000_probe()\n"); - - /* setup board info structure */ - db = (struct board_info *) ndev->priv; - memset(db, 0, sizeof (*db)); - - db->dev = &pdev->dev; - db->ndev = ndev; - - spin_lock_init(&db->lock); - mutex_init(&db->addr_lock); - - INIT_DELAYED_WORK(&db->phy_poll, dm9000_poll_work); - - db->addr_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - db->data_res = platform_get_resource(pdev, IORESOURCE_MEM, 1); - db->irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - - if (db->addr_res == NULL || db->data_res == NULL || - db->irq_res == NULL) { - dev_err(db->dev, "insufficient resources\n"); - ret = -ENOENT; - goto out; - } - - iosize = res_size(db->addr_res); - db->addr_req = request_mem_region(db->addr_res->start, iosize, - pdev->name); - - if (db->addr_req == NULL) { - dev_err(db->dev, "cannot claim address reg area\n"); - ret = -EIO; - goto out; - } - - db->io_addr = ioremap(db->addr_res->start, iosize); - - if (db->io_addr == NULL) { - dev_err(db->dev, "failed to ioremap address reg\n"); - ret = -EINVAL; - goto out; - } - - iosize = res_size(db->data_res); - db->data_req = request_mem_region(db->data_res->start, iosize, - pdev->name); - - if (db->data_req == NULL) { - dev_err(db->dev, "cannot claim data reg area\n"); - ret = -EIO; - goto out; - } - - db->io_data = ioremap(db->data_res->start, iosize); - - if (db->io_data == NULL) { - dev_err(db->dev, "failed to ioremap data reg\n"); - ret = -EINVAL; - goto out; - } - - /* fill in parameters for net-dev structure */ - ndev->base_addr = (unsigned long)db->io_addr; - ndev->irq = db->irq_res->start; - - /* ensure at least we have a default set of IO routines */ - dm9000_set_io(db, iosize); - - /* check to see if anything is being over-ridden */ - if (pdata != NULL) { - /* check to see if the driver wants to over-ride the - * default IO width */ - - if (pdata->flags & DM9000_PLATF_8BITONLY) - dm9000_set_io(db, 1); - - if (pdata->flags & DM9000_PLATF_16BITONLY) - dm9000_set_io(db, 2); - - if (pdata->flags & DM9000_PLATF_32BITONLY) - dm9000_set_io(db, 4); - - /* check to see if there are any IO routine - * over-rides */ - - if (pdata->inblk != NULL) - db->inblk = pdata->inblk; - - if (pdata->outblk != NULL) - db->outblk = pdata->outblk; - - if (pdata->dumpblk != NULL) - db->dumpblk = pdata->dumpblk; - - db->flags = pdata->flags; - } - - dm9000_reset(db); - - /* try multiple times, DM9000 sometimes gets the read wrong */ - for (i = 0; i < 8; i++) { - id_val = ior(db, DM9000_VIDL); - id_val |= (u32)ior(db, DM9000_VIDH) << 8; - id_val |= (u32)ior(db, DM9000_PIDL) << 16; - id_val |= (u32)ior(db, DM9000_PIDH) << 24; - - if (id_val == DM9000_ID) - break; - dev_err(db->dev, "read wrong id 0x%08x\n", id_val); - } - - if (id_val != DM9000_ID) { - dev_err(db->dev, "wrong id: 0x%08x\n", id_val); - ret = -ENODEV; - goto out; - } - - /* Identify what type of DM9000 we are working on */ - - id_val = ior(db, DM9000_CHIPR); - dev_dbg(db->dev, "dm9000 revision 0x%02x\n", id_val); - - switch (id_val) { - case CHIPR_DM9000A: - db->type = TYPE_DM9000A; - break; - case CHIPR_DM9000B: - db->type = TYPE_DM9000B; - break; - default: - dev_dbg(db->dev, "ID %02x => defaulting to DM9000E\n", id_val); - db->type = TYPE_DM9000E; - } - - /* from this point we assume that we have found a DM9000 */ - - /* driver system function */ - ether_setup(ndev); - - ndev->open = &dm9000_open; - ndev->hard_start_xmit = &dm9000_start_xmit; - ndev->tx_timeout = &dm9000_timeout; - ndev->watchdog_timeo = msecs_to_jiffies(watchdog); - ndev->stop = &dm9000_stop; - ndev->set_multicast_list = &dm9000_hash_table; - ndev->ethtool_ops = &dm9000_ethtool_ops; - ndev->do_ioctl = &dm9000_ioctl; - -#ifdef CONFIG_NET_POLL_CONTROLLER - ndev->poll_controller = &dm9000_poll_controller; -#endif + board_info_t *db = (board_info_t *) dev->priv; + struct dev_mc_list *mcptr = dev->mc_list; + int mc_cnt = dev->mc_count; + int i, oft; + u32 hash_val; + u16 hash_table[4]; + u8 rcr = RCR_DIS_LONG | RCR_DIS_CRC | RCR_RXEN; + unsigned long flags; - db->msg_enable = NETIF_MSG_LINK; - db->mii.phy_id_mask = 0x1f; - db->mii.reg_num_mask = 0x1f; - db->mii.force_media = 0; - db->mii.full_duplex = 0; - db->mii.dev = ndev; - db->mii.mdio_read = dm9000_phy_read; - db->mii.mdio_write = dm9000_phy_write; + dm9000_dbg(db, 1, "entering %s\n", __func__); - mac_src = "eeprom"; + spin_lock_irqsave(&db->lock, flags); - /* try reading the node address from the attached EEPROM */ - for (i = 0; i < 6; i += 2) - dm9000_read_eeprom(db, i / 2, ndev->dev_addr+i); + for (i = 0, oft = DM9000_PAR; i < 6; i++, oft++) + iow(db, oft, dev->dev_addr[i]); - if (!is_valid_ether_addr(ndev->dev_addr)) { - /* try reading from mac */ + /* Clear Hash Table */ + for (i = 0; i < 4; i++) + hash_table[i] = 0x0; - mac_src = "chip"; - for (i = 0; i < 6; i++) - ndev->dev_addr[i] = ior(db, i+DM9000_PAR); - } + /* broadcast address */ + hash_table[3] = 0x8000; - if (!is_valid_ether_addr(ndev->dev_addr)) - dev_warn(db->dev, "%s: Invalid ethernet MAC address. Please " - "set using ifconfig\n", ndev->name); + if (dev->flags & IFF_PROMISC) + rcr |= RCR_PRMSC; - platform_set_drvdata(pdev, ndev); - ret = register_netdev(ndev); + if (dev->flags & IFF_ALLMULTI) + rcr |= RCR_ALL; - if (ret == 0) { - DECLARE_MAC_BUF(mac); - printk(KERN_INFO "%s: dm9000%c at %p,%p IRQ %d MAC: %s (%s)\n", - ndev->name, dm9000_type_to_char(db->type), - db->io_addr, db->io_data, ndev->irq, - print_mac(mac, ndev->dev_addr), mac_src); + /* the multicast address in Hash Table : 64 bits */ + for (i = 0; i < mc_cnt; i++, mcptr = mcptr->next) { + hash_val = ether_crc_le(6, mcptr->dmi_addr) & 0x3f; + hash_table[hash_val / 16] |= (u16) 1 << (hash_val % 16); } - return 0; - -out: - dev_err(db->dev, "not found (%d).\n", ret); - dm9000_release_board(pdev, db); - free_netdev(ndev); - - return ret; -} - -/* - * Open the interface. - * The interface is opened whenever "ifconfig" actives it. - */ -static int -dm9000_open(struct net_device *dev) -{ - board_info_t *db = dev->priv; - unsigned long irqflags = db->irq_res->flags & IRQF_TRIGGER_MASK; - - if (netif_msg_ifup(db)) - dev_dbg(db->dev, "enabling %s\n", dev->name); - - /* If there is no IRQ type specified, default to something that - * may work, and tell the user that this is a problem */ - - if (irqflags == IRQF_TRIGGER_NONE) { - dev_warn(db->dev, "WARNING: no IRQ resource flags set.\n"); - irqflags = DEFAULT_TRIGGER; + /* Write the hash table to MAC MD table */ + for (i = 0, oft = DM9000_MAR; i < 4; i++) { + iow(db, oft++, hash_table[i]); + iow(db, oft++, hash_table[i] >> 8); } - irqflags |= IRQF_SHARED; - - if (request_irq(dev->irq, &dm9000_interrupt, irqflags, dev->name, dev)) - return -EAGAIN; - - /* Initialize DM9000 board */ - dm9000_reset(db); - dm9000_init_dm9000(dev); - - /* Init driver variable */ - db->dbug_cnt = 0; - - mii_check_media(&db->mii, netif_msg_link(db), 1); - netif_start_queue(dev); - - dm9000_schedule_poll(db); - - return 0; + iow(db, DM9000_RCR, rcr); + spin_unlock_irqrestore(&db->lock, flags); } /* @@ -843,6 +690,29 @@ dm9000_init_dm9000(struct net_device *dev) dev->trans_start = 0; } +/* Our watchdog timed out. Called by the networking layer */ +static void dm9000_timeout(struct net_device *dev) +{ + board_info_t *db = (board_info_t *) dev->priv; + u8 reg_save; + unsigned long flags; + + /* Save previous register address */ + reg_save = readb(db->io_addr); + spin_lock_irqsave(&db->lock, flags); + + netif_stop_queue(dev); + dm9000_reset(db); + dm9000_init_dm9000(dev); + /* We can accept TX packets again */ + dev->trans_start = jiffies; + netif_wake_queue(dev); + + /* Restore previous register address */ + writeb(reg_save, db->io_addr); + spin_unlock_irqrestore(&db->lock, flags); +} + /* * Hardware start transmission. * Send a packet to media from the upper layer. @@ -891,50 +761,12 @@ dm9000_start_xmit(struct sk_buff *skb, struct net_device *dev) return 0; } -static void -dm9000_shutdown(struct net_device *dev) -{ - board_info_t *db = dev->priv; - - /* RESET device */ - dm9000_phy_write(dev, 0, MII_BMCR, BMCR_RESET); /* PHY RESET */ - iow(db, DM9000_GPR, 0x01); /* Power-Down PHY */ - iow(db, DM9000_IMR, IMR_PAR); /* Disable all interrupt */ - iow(db, DM9000_RCR, 0x00); /* Disable RX */ -} - -/* - * Stop the interface. - * The interface is stopped when it is brought. - */ -static int -dm9000_stop(struct net_device *ndev) -{ - board_info_t *db = ndev->priv; - - if (netif_msg_ifdown(db)) - dev_dbg(db->dev, "shutting down %s\n", ndev->name); - - cancel_delayed_work_sync(&db->phy_poll); - - netif_stop_queue(ndev); - netif_carrier_off(ndev); - - /* free interrupt */ - free_irq(ndev->irq, ndev); - - dm9000_shutdown(ndev); - - return 0; -} - /* * DM9000 interrupt handler * receive the packet to upper layer, free the transmitted packet */ -static void -dm9000_tx_done(struct net_device *dev, board_info_t * db) +static void dm9000_tx_done(struct net_device *dev, board_info_t *db) { int tx_status = ior(db, DM9000_NSR); /* Got TX status */ @@ -957,59 +789,6 @@ dm9000_tx_done(struct net_device *dev, board_info_t * db) } } -static irqreturn_t -dm9000_interrupt(int irq, void *dev_id) -{ - struct net_device *dev = dev_id; - board_info_t *db = dev->priv; - int int_status; - u8 reg_save; - - dm9000_dbg(db, 3, "entering %s\n", __func__); - - /* A real interrupt coming */ - - spin_lock(&db->lock); - - /* Save previous register address */ - reg_save = readb(db->io_addr); - - /* Disable all interrupts */ - iow(db, DM9000_IMR, IMR_PAR); - - /* Got DM9000 interrupt status */ - int_status = ior(db, DM9000_ISR); /* Got ISR */ - iow(db, DM9000_ISR, int_status); /* Clear ISR status */ - - if (netif_msg_intr(db)) - dev_dbg(db->dev, "interrupt status %02x\n", int_status); - - /* Received the coming packet */ - if (int_status & ISR_PRS) - dm9000_rx(dev); - - /* Trnasmit Interrupt check */ - if (int_status & ISR_PTS) - dm9000_tx_done(dev, db); - - if (db->type != TYPE_DM9000E) { - if (int_status & ISR_LNKCHNG) { - /* fire a link-change request */ - schedule_delayed_work(&db->phy_poll, 1); - } - } - - /* Re-enable interrupt mask */ - iow(db, DM9000_IMR, db->imr_all); - - /* Restore previous register address */ - writeb(reg_save, db->io_addr); - - spin_unlock(&db->lock); - - return IRQ_HANDLED; -} - struct dm9000_rxhdr { u8 RxPktReady; u8 RxStatus; @@ -1113,173 +892,111 @@ dm9000_rx(struct net_device *dev) } while (rxbyte == DM9000_PKT_RDY); } -static unsigned int -dm9000_read_locked(board_info_t *db, int reg) +static irqreturn_t dm9000_interrupt(int irq, void *dev_id) { - unsigned long flags; - unsigned int ret; + struct net_device *dev = dev_id; + board_info_t *db = dev->priv; + int int_status; + u8 reg_save; - spin_lock_irqsave(&db->lock, flags); - ret = ior(db, reg); - spin_unlock_irqrestore(&db->lock, flags); + dm9000_dbg(db, 3, "entering %s\n", __func__); - return ret; -} + /* A real interrupt coming */ -static int dm9000_wait_eeprom(board_info_t *db) -{ - unsigned int status; - int timeout = 8; /* wait max 8msec */ + spin_lock(&db->lock); - /* The DM9000 data sheets say we should be able to - * poll the ERRE bit in EPCR to wait for the EEPROM - * operation. From testing several chips, this bit - * does not seem to work. - * - * We attempt to use the bit, but fall back to the - * timeout (which is why we do not return an error - * on expiry) to say that the EEPROM operation has - * completed. - */ + /* Save previous register address */ + reg_save = readb(db->io_addr); - while (1) { - status = dm9000_read_locked(db, DM9000_EPCR); + /* Disable all interrupts */ + iow(db, DM9000_IMR, IMR_PAR); - if ((status & EPCR_ERRE) == 0) - break; + /* Got DM9000 interrupt status */ + int_status = ior(db, DM9000_ISR); /* Got ISR */ + iow(db, DM9000_ISR, int_status); /* Clear ISR status */ - if (timeout-- < 0) { - dev_dbg(db->dev, "timeout waiting EEPROM\n"); - break; - } - } + if (netif_msg_intr(db)) + dev_dbg(db->dev, "interrupt status %02x\n", int_status); - return 0; -} + /* Received the coming packet */ + if (int_status & ISR_PRS) + dm9000_rx(dev); -/* - * Read a word data from EEPROM - */ -static void -dm9000_read_eeprom(board_info_t *db, int offset, u8 *to) -{ - unsigned long flags; + /* Trnasmit Interrupt check */ + if (int_status & ISR_PTS) + dm9000_tx_done(dev, db); - if (db->flags & DM9000_PLATF_NO_EEPROM) { - to[0] = 0xff; - to[1] = 0xff; - return; + if (db->type != TYPE_DM9000E) { + if (int_status & ISR_LNKCHNG) { + /* fire a link-change request */ + schedule_delayed_work(&db->phy_poll, 1); + } } - mutex_lock(&db->addr_lock); - - spin_lock_irqsave(&db->lock, flags); - - iow(db, DM9000_EPAR, offset); - iow(db, DM9000_EPCR, EPCR_ERPRR); - - spin_unlock_irqrestore(&db->lock, flags); - - dm9000_wait_eeprom(db); - - /* delay for at-least 150uS */ - msleep(1); - - spin_lock_irqsave(&db->lock, flags); - - iow(db, DM9000_EPCR, 0x0); + /* Re-enable interrupt mask */ + iow(db, DM9000_IMR, db->imr_all); - to[0] = ior(db, DM9000_EPDRL); - to[1] = ior(db, DM9000_EPDRH); + /* Restore previous register address */ + writeb(reg_save, db->io_addr); - spin_unlock_irqrestore(&db->lock, flags); + spin_unlock(&db->lock); - mutex_unlock(&db->addr_lock); + return IRQ_HANDLED; } +#ifdef CONFIG_NET_POLL_CONTROLLER /* - * Write a word data to SROM + *Used by netconsole */ -static void -dm9000_write_eeprom(board_info_t *db, int offset, u8 *data) +static void dm9000_poll_controller(struct net_device *dev) { - unsigned long flags; - - if (db->flags & DM9000_PLATF_NO_EEPROM) - return; - - mutex_lock(&db->addr_lock); - - spin_lock_irqsave(&db->lock, flags); - iow(db, DM9000_EPAR, offset); - iow(db, DM9000_EPDRH, data[1]); - iow(db, DM9000_EPDRL, data[0]); - iow(db, DM9000_EPCR, EPCR_WEP | EPCR_ERPRW); - spin_unlock_irqrestore(&db->lock, flags); - - dm9000_wait_eeprom(db); - - mdelay(1); /* wait at least 150uS to clear */ - - spin_lock_irqsave(&db->lock, flags); - iow(db, DM9000_EPCR, 0); - spin_unlock_irqrestore(&db->lock, flags); - - mutex_unlock(&db->addr_lock); + disable_irq(dev->irq); + dm9000_interrupt(dev->irq, dev); + enable_irq(dev->irq); } +#endif /* - * Set DM9000 multicast address + * Open the interface. + * The interface is opened whenever "ifconfig" actives it. */ -static void -dm9000_hash_table(struct net_device *dev) +static int +dm9000_open(struct net_device *dev) { - board_info_t *db = (board_info_t *) dev->priv; - struct dev_mc_list *mcptr = dev->mc_list; - int mc_cnt = dev->mc_count; - int i, oft; - u32 hash_val; - u16 hash_table[4]; - u8 rcr = RCR_DIS_LONG | RCR_DIS_CRC | RCR_RXEN; - unsigned long flags; - - dm9000_dbg(db, 1, "entering %s\n", __func__); - - spin_lock_irqsave(&db->lock, flags); + board_info_t *db = dev->priv; + unsigned long irqflags = db->irq_res->flags & IRQF_TRIGGER_MASK; - for (i = 0, oft = DM9000_PAR; i < 6; i++, oft++) - iow(db, oft, dev->dev_addr[i]); + if (netif_msg_ifup(db)) + dev_dbg(db->dev, "enabling %s\n", dev->name); - /* Clear Hash Table */ - for (i = 0; i < 4; i++) - hash_table[i] = 0x0; + /* If there is no IRQ type specified, default to something that + * may work, and tell the user that this is a problem */ - /* broadcast address */ - hash_table[3] = 0x8000; + if (irqflags == IRQF_TRIGGER_NONE) { + dev_warn(db->dev, "WARNING: no IRQ resource flags set.\n"); + irqflags = DEFAULT_TRIGGER; + } + + irqflags |= IRQF_SHARED; - if (dev->flags & IFF_PROMISC) - rcr |= RCR_PRMSC; + if (request_irq(dev->irq, &dm9000_interrupt, irqflags, dev->name, dev)) + return -EAGAIN; - if (dev->flags & IFF_ALLMULTI) - rcr |= RCR_ALL; + /* Initialize DM9000 board */ + dm9000_reset(db); + dm9000_init_dm9000(dev); - /* the multicast address in Hash Table : 64 bits */ - for (i = 0; i < mc_cnt; i++, mcptr = mcptr->next) { - hash_val = ether_crc_le(6, mcptr->dmi_addr) & 0x3f; - hash_table[hash_val / 16] |= (u16) 1 << (hash_val % 16); - } + /* Init driver variable */ + db->dbug_cnt = 0; - /* Write the hash table to MAC MD table */ - for (i = 0, oft = DM9000_MAR; i < 4; i++) { - iow(db, oft++, hash_table[i]); - iow(db, oft++, hash_table[i] >> 8); - } + mii_check_media(&db->mii, netif_msg_link(db), 1); + netif_start_queue(dev); + + dm9000_schedule_poll(db); - iow(db, DM9000_RCR, rcr); - spin_unlock_irqrestore(&db->lock, flags); + return 0; } - /* * Sleep, either by using msleep() or if we are suspending, then * use mdelay() to sleep. @@ -1383,6 +1100,269 @@ dm9000_phy_write(struct net_device *dev, mutex_unlock(&db->addr_lock); } +static void +dm9000_shutdown(struct net_device *dev) +{ + board_info_t *db = dev->priv; + + /* RESET device */ + dm9000_phy_write(dev, 0, MII_BMCR, BMCR_RESET); /* PHY RESET */ + iow(db, DM9000_GPR, 0x01); /* Power-Down PHY */ + iow(db, DM9000_IMR, IMR_PAR); /* Disable all interrupt */ + iow(db, DM9000_RCR, 0x00); /* Disable RX */ +} + +/* + * Stop the interface. + * The interface is stopped when it is brought. + */ +static int +dm9000_stop(struct net_device *ndev) +{ + board_info_t *db = ndev->priv; + + if (netif_msg_ifdown(db)) + dev_dbg(db->dev, "shutting down %s\n", ndev->name); + + cancel_delayed_work_sync(&db->phy_poll); + + netif_stop_queue(ndev); + netif_carrier_off(ndev); + + /* free interrupt */ + free_irq(ndev->irq, ndev); + + dm9000_shutdown(ndev); + + return 0; +} + +#define res_size(_r) (((_r)->end - (_r)->start) + 1) + +/* + * Search DM9000 board, allocate space and register it + */ +static int __devinit +dm9000_probe(struct platform_device *pdev) +{ + struct dm9000_plat_data *pdata = pdev->dev.platform_data; + struct board_info *db; /* Point a board information structure */ + struct net_device *ndev; + const unsigned char *mac_src; + int ret = 0; + int iosize; + int i; + u32 id_val; + + /* Init network device */ + ndev = alloc_etherdev(sizeof(struct board_info)); + if (!ndev) { + dev_err(&pdev->dev, "could not allocate device.\n"); + return -ENOMEM; + } + + SET_NETDEV_DEV(ndev, &pdev->dev); + + dev_dbg(&pdev->dev, "dm9000_probe()\n"); + + /* setup board info structure */ + db = ndev->priv; + memset(db, 0, sizeof(*db)); + + db->dev = &pdev->dev; + db->ndev = ndev; + + spin_lock_init(&db->lock); + mutex_init(&db->addr_lock); + + INIT_DELAYED_WORK(&db->phy_poll, dm9000_poll_work); + + db->addr_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + db->data_res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + db->irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + + if (db->addr_res == NULL || db->data_res == NULL || + db->irq_res == NULL) { + dev_err(db->dev, "insufficient resources\n"); + ret = -ENOENT; + goto out; + } + + iosize = res_size(db->addr_res); + db->addr_req = request_mem_region(db->addr_res->start, iosize, + pdev->name); + + if (db->addr_req == NULL) { + dev_err(db->dev, "cannot claim address reg area\n"); + ret = -EIO; + goto out; + } + + db->io_addr = ioremap(db->addr_res->start, iosize); + + if (db->io_addr == NULL) { + dev_err(db->dev, "failed to ioremap address reg\n"); + ret = -EINVAL; + goto out; + } + + iosize = res_size(db->data_res); + db->data_req = request_mem_region(db->data_res->start, iosize, + pdev->name); + + if (db->data_req == NULL) { + dev_err(db->dev, "cannot claim data reg area\n"); + ret = -EIO; + goto out; + } + + db->io_data = ioremap(db->data_res->start, iosize); + + if (db->io_data == NULL) { + dev_err(db->dev, "failed to ioremap data reg\n"); + ret = -EINVAL; + goto out; + } + + /* fill in parameters for net-dev structure */ + ndev->base_addr = (unsigned long)db->io_addr; + ndev->irq = db->irq_res->start; + + /* ensure at least we have a default set of IO routines */ + dm9000_set_io(db, iosize); + + /* check to see if anything is being over-ridden */ + if (pdata != NULL) { + /* check to see if the driver wants to over-ride the + * default IO width */ + + if (pdata->flags & DM9000_PLATF_8BITONLY) + dm9000_set_io(db, 1); + + if (pdata->flags & DM9000_PLATF_16BITONLY) + dm9000_set_io(db, 2); + + if (pdata->flags & DM9000_PLATF_32BITONLY) + dm9000_set_io(db, 4); + + /* check to see if there are any IO routine + * over-rides */ + + if (pdata->inblk != NULL) + db->inblk = pdata->inblk; + + if (pdata->outblk != NULL) + db->outblk = pdata->outblk; + + if (pdata->dumpblk != NULL) + db->dumpblk = pdata->dumpblk; + + db->flags = pdata->flags; + } + + dm9000_reset(db); + + /* try multiple times, DM9000 sometimes gets the read wrong */ + for (i = 0; i < 8; i++) { + id_val = ior(db, DM9000_VIDL); + id_val |= (u32)ior(db, DM9000_VIDH) << 8; + id_val |= (u32)ior(db, DM9000_PIDL) << 16; + id_val |= (u32)ior(db, DM9000_PIDH) << 24; + + if (id_val == DM9000_ID) + break; + dev_err(db->dev, "read wrong id 0x%08x\n", id_val); + } + + if (id_val != DM9000_ID) { + dev_err(db->dev, "wrong id: 0x%08x\n", id_val); + ret = -ENODEV; + goto out; + } + + /* Identify what type of DM9000 we are working on */ + + id_val = ior(db, DM9000_CHIPR); + dev_dbg(db->dev, "dm9000 revision 0x%02x\n", id_val); + + switch (id_val) { + case CHIPR_DM9000A: + db->type = TYPE_DM9000A; + break; + case CHIPR_DM9000B: + db->type = TYPE_DM9000B; + break; + default: + dev_dbg(db->dev, "ID %02x => defaulting to DM9000E\n", id_val); + db->type = TYPE_DM9000E; + } + + /* from this point we assume that we have found a DM9000 */ + + /* driver system function */ + ether_setup(ndev); + + ndev->open = &dm9000_open; + ndev->hard_start_xmit = &dm9000_start_xmit; + ndev->tx_timeout = &dm9000_timeout; + ndev->watchdog_timeo = msecs_to_jiffies(watchdog); + ndev->stop = &dm9000_stop; + ndev->set_multicast_list = &dm9000_hash_table; + ndev->ethtool_ops = &dm9000_ethtool_ops; + ndev->do_ioctl = &dm9000_ioctl; + +#ifdef CONFIG_NET_POLL_CONTROLLER + ndev->poll_controller = &dm9000_poll_controller; +#endif + + db->msg_enable = NETIF_MSG_LINK; + db->mii.phy_id_mask = 0x1f; + db->mii.reg_num_mask = 0x1f; + db->mii.force_media = 0; + db->mii.full_duplex = 0; + db->mii.dev = ndev; + db->mii.mdio_read = dm9000_phy_read; + db->mii.mdio_write = dm9000_phy_write; + + mac_src = "eeprom"; + + /* try reading the node address from the attached EEPROM */ + for (i = 0; i < 6; i += 2) + dm9000_read_eeprom(db, i / 2, ndev->dev_addr+i); + + if (!is_valid_ether_addr(ndev->dev_addr)) { + /* try reading from mac */ + + mac_src = "chip"; + for (i = 0; i < 6; i++) + ndev->dev_addr[i] = ior(db, i+DM9000_PAR); + } + + if (!is_valid_ether_addr(ndev->dev_addr)) + dev_warn(db->dev, "%s: Invalid ethernet MAC address. Please " + "set using ifconfig\n", ndev->name); + + platform_set_drvdata(pdev, ndev); + ret = register_netdev(ndev); + + if (ret == 0) { + DECLARE_MAC_BUF(mac); + printk(KERN_INFO "%s: dm9000%c at %p,%p IRQ %d MAC: %s (%s)\n", + ndev->name, dm9000_type_to_char(db->type), + db->io_addr, db->io_data, ndev->irq, + print_mac(mac, ndev->dev_addr), mac_src); + } + return 0; + +out: + dev_err(db->dev, "not found (%d).\n", ret); + + dm9000_release_board(pdev, db); + free_netdev(ndev); + + return ret; +} + static int dm9000_drv_suspend(struct platform_device *dev, pm_message_t state) { |