X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Fnet%2Fdm9000.c;h=b377300656889cd9db9a2242bcc213611798cd91;hb=d160439e7753aa19092bb12d8f4c6c918f8267e0;hp=ec9730aee1e3005409a247ea20c0a0ba350ec3cf;hpb=1a5f1c4ff80f522555d78d4dd0109f18395c6d83;p=safe%2Fjmp%2Flinux-2.6 diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c index ec9730a..b377300 100644 --- a/drivers/net/dm9000.c +++ b/drivers/net/dm9000.c @@ -1,7 +1,5 @@ /* - * dm9000.c: Version 1.2 03/18/2003 - * - * A Davicom DM9000 ISA NIC fast Ethernet driver for Linux. + * Davicom DM9000 Fast Ethernet driver for Linux. * Copyright (C) 1997 Sten Wang * * This program is free software; you can redistribute it and/or @@ -14,44 +12,11 @@ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * - * (C)Copyright 1997-1998 DAVICOM Semiconductor,Inc. All Rights Reserved. - * - * V0.11 06/20/2001 REG_0A bit3=1, default enable BP with DA match - * 06/22/2001 Support DM9801 progrmming - * E3: R25 = ((R24 + NF) & 0x00ff) | 0xf000 - * E4: R25 = ((R24 + NF) & 0x00ff) | 0xc200 - * R17 = (R17 & 0xfff0) | NF + 3 - * E5: R25 = ((R24 + NF - 3) & 0x00ff) | 0xc200 - * R17 = (R17 & 0xfff0) | NF - * - * v1.00 modify by simon 2001.9.5 - * change for kernel 2.4.x - * - * v1.1 11/09/2001 fix force mode bug - * - * v1.2 03/18/2003 Weilun Huang : - * Fixed phy reset. - * Added tx/rx 32 bit mode. - * Cleaned up for kernel merge. - * - * 03/03/2004 Sascha Hauer - * Port to 2.6 kernel - * - * 24-Sep-2004 Ben Dooks - * Cleanup of code to remove ifdefs - * Allowed platform device data to influence access width - * Reformatting areas of code - * - * 17-Mar-2005 Sascha Hauer - * * removed 2.4 style module parameters - * * removed removed unused stat counter and fixed - * net_device_stats - * * introduced tx_timeout function - * * reworked locking + * (C) Copyright 1997-1998 DAVICOM Semiconductor,Inc. All Rights Reserved. * - * 01-Jul-2005 Ben Dooks - * * fixed spinlock call without pointer - * * ensure spinlock is initialised + * Additional updates, Copyright: + * Ben Dooks + * Sascha Hauer */ #include @@ -63,6 +28,7 @@ #include #include #include +#include #include #include #include @@ -78,22 +44,8 @@ #define DM9000_PHY 0x40 /* PHY address 0x01 */ -#define CARDNAME "dm9000" -#define PFX CARDNAME ": " - -#define DM9000_TIMER_WUT jiffies+(HZ*2) /* timer wakeup time : 2 second */ - -#ifdef CONFIG_BLACKFIN -#define readsb insb -#define readsw insw -#define readsl insl -#define writesb outsb -#define writesw outsw -#define writesl outsl -#define DEFAULT_TRIGGER IRQF_TRIGGER_HIGH -#else -#define DEFAULT_TRIGGER (0) -#endif +#define CARDNAME "dm9000" +#define DRV_VERSION "1.31" /* * Transmit timeout, default 5 seconds. @@ -102,22 +54,56 @@ static int watchdog = 5000; module_param(watchdog, int, 0400); MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds"); +/* DM9000 register address locking. + * + * The DM9000 uses an address register to control where data written + * to the data register goes. This means that the address register + * must be preserved over interrupts or similar calls. + * + * During interrupt and other critical calls, a spinlock is used to + * protect the system, but the calls themselves save the address + * in the address register in case they are interrupting another + * access to the device. + * + * For general accesses a lock is provided so that calls which are + * allowed to sleep are serialised so that the address register does + * not need to be saved. This lock also serves to serialise access + * to the EEPROM and PHY access registers which are shared between + * these two devices. + */ + +/* The driver supports the original DM9000E, and now the two newer + * devices, DM9000A and DM9000B. + */ + +enum dm9000_type { + TYPE_DM9000E, /* original DM9000 */ + TYPE_DM9000A, + TYPE_DM9000B +}; + /* Structure/enum declaration ------------------------------- */ typedef struct board_info { - void __iomem *io_addr; /* Register I/O base address */ - void __iomem *io_data; /* Data I/O address */ - u16 irq; /* IRQ */ + void __iomem *io_addr; /* Register I/O base address */ + void __iomem *io_data; /* Data I/O address */ + u16 irq; /* IRQ */ - u16 tx_pkt_cnt; - u16 queue_pkt_len; - u16 queue_start_addr; - u16 dbug_cnt; - u8 io_mode; /* 0:word, 2:byte */ - u8 phy_addr; - unsigned int flags; + u16 tx_pkt_cnt; + u16 queue_pkt_len; + u16 queue_start_addr; + u16 queue_ip_summed; + u16 dbug_cnt; + u8 io_mode; /* 0:word, 2:byte */ + u8 phy_addr; + u8 imr_all; - int debug_level; + unsigned int flags; + unsigned int in_suspend :1; + unsigned int wake_supported :1; + int debug_level; + + enum dm9000_type type; void (*inblk)(void __iomem *port, void *data, int length); void (*outblk)(void __iomem *port, void *data, int length); @@ -131,12 +117,22 @@ typedef struct board_info { struct resource *data_req; struct resource *irq_res; - struct timer_list timer; - unsigned char srom[128]; - spinlock_t lock; + int irq_wake; + + struct mutex addr_lock; /* phy and eeprom access lock */ + + struct delayed_work phy_poll; + struct net_device *ndev; + + spinlock_t lock; struct mii_if_info mii; - u32 msg_enable; + u32 msg_enable; + u32 wake_state; + + int rx_csum; + int can_csum; + int ip_summed; } board_info_t; /* debug code */ @@ -148,29 +144,11 @@ typedef struct board_info { } \ } while (0) -/* function declaration ------------------------------------- */ -static int dm9000_probe(struct platform_device *); -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_timer(unsigned long); -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 phyaddr_unsused, int reg); -static void dm9000_phy_write(struct net_device *dev, int phyaddr_unused, int reg, - int value); -static u16 read_srom_word(board_info_t *, int); -static void dm9000_rx(struct net_device *); -static void dm9000_hash_table(struct net_device *); +static inline board_info_t *to_dm9000_board(struct net_device *dev) +{ + return netdev_priv(dev); +} -//#define DM9000_PROGRAM_EEPROM -#ifdef DM9000_PROGRAM_EEPROM -static void program_eeprom(board_info_t * db); -#endif /* DM9000 network board routine ---------------------------- */ static void @@ -311,366 +289,517 @@ static void dm9000_set_io(struct board_info *db, int byte_width) } } - -/* Our watchdog timed out. Called by the networking layer */ -static void dm9000_timeout(struct net_device *dev) +static void dm9000_schedule_poll(board_info_t *db) { - board_info_t *db = (board_info_t *) dev->priv; - u8 reg_save; - unsigned long flags; + if (db->type == TYPE_DM9000E) + schedule_delayed_work(&db->phy_poll, HZ * 2); +} - /* Save previous register address */ - reg_save = readb(db->io_addr); - spin_lock_irqsave(&db->lock,flags); +static int dm9000_ioctl(struct net_device *dev, struct ifreq *req, int cmd) +{ + board_info_t *dm = to_dm9000_board(dev); - 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); + if (!netif_running(dev)) + return -EINVAL; - /* Restore previous register address */ - writeb(reg_save, db->io_addr); - spin_unlock_irqrestore(&db->lock,flags); + return generic_mii_ioctl(&dm->mii, if_mii(req), cmd, NULL); } -#ifdef CONFIG_NET_POLL_CONTROLLER -/* - *Used by netconsole - */ -static void dm9000_poll_controller(struct net_device *dev) +static unsigned int +dm9000_read_locked(board_info_t *db, int reg) { - disable_irq(dev->irq); - dm9000_interrupt(dev->irq,dev); - enable_irq(dev->irq); -} -#endif + unsigned long flags; + unsigned int ret; -/* dm9000_release_board - * - * release a board, and any mapped resources - */ + spin_lock_irqsave(&db->lock, flags); + ret = ior(db, reg); + spin_unlock_irqrestore(&db->lock, flags); -static void -dm9000_release_board(struct platform_device *pdev, struct board_info *db) + return ret; +} + +static int dm9000_wait_eeprom(board_info_t *db) { - if (db->data_res == NULL) { - if (db->addr_res != NULL) - release_mem_region((unsigned long)db->io_addr, 4); - return; - } + 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. + */ - /* unmap our resources */ + while (1) { + status = dm9000_read_locked(db, DM9000_EPCR); - iounmap(db->io_addr); - iounmap(db->io_data); + if ((status & EPCR_ERRE) == 0) + break; - /* release the resources */ + msleep(1); - if (db->data_req != NULL) { - release_resource(db->data_req); - kfree(db->data_req); + if (timeout-- < 0) { + dev_dbg(db->dev, "timeout waiting EEPROM\n"); + break; + } } - if (db->addr_req != NULL) { - release_resource(db->addr_req); - kfree(db->addr_req); - } + return 0; } -#define res_size(_r) (((_r)->end - (_r)->start) + 1) - /* - * Search DM9000 board, allocate space and register it + * Read a word data from EEPROM */ -static int -dm9000_probe(struct platform_device *pdev) +static void +dm9000_read_eeprom(board_info_t *db, int offset, u8 *to) { - struct dm9000_plat_data *pdata = pdev->dev.platform_data; - struct board_info *db; /* Point a board information structure */ - struct net_device *ndev; - unsigned long base; - int ret = 0; - int iosize; - int i; - u32 id_val; + unsigned long flags; - /* Init network device */ - ndev = alloc_etherdev(sizeof (struct board_info)); - if (!ndev) { - dev_err(&pdev->dev, "could not allocate device.\n"); - return -ENOMEM; + if (db->flags & DM9000_PLATF_NO_EEPROM) { + to[0] = 0xff; + to[1] = 0xff; + return; } - SET_NETDEV_DEV(ndev, &pdev->dev); + mutex_lock(&db->addr_lock); - dev_dbg(&pdev->dev, "dm9000_probe()"); + spin_lock_irqsave(&db->lock, flags); - /* setup board info structure */ - db = (struct board_info *) ndev->priv; - memset(db, 0, sizeof (*db)); + iow(db, DM9000_EPAR, offset); + iow(db, DM9000_EPCR, EPCR_ERPRR); - db->dev = &pdev->dev; + spin_unlock_irqrestore(&db->lock, flags); - spin_lock_init(&db->lock); + dm9000_wait_eeprom(db); - if (pdev->num_resources < 2) { - ret = -ENODEV; - goto out; - } else if (pdev->num_resources == 2) { - base = pdev->resource[0].start; + /* delay for at-least 150uS */ + msleep(1); - if (!request_mem_region(base, 4, ndev->name)) { - ret = -EBUSY; - goto out; - } + spin_lock_irqsave(&db->lock, flags); - ndev->base_addr = base; - ndev->irq = pdev->resource[1].start; - db->io_addr = (void __iomem *)base; - db->io_data = (void __iomem *)(base + 4); + iow(db, DM9000_EPCR, 0x0); - /* ensure at least we have a default set of IO routines */ - dm9000_set_io(db, 2); + to[0] = ior(db, DM9000_EPDRL); + to[1] = ior(db, DM9000_EPDRH); - } else { - 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; - } + spin_unlock_irqrestore(&db->lock, flags); - i = res_size(db->addr_res); - db->addr_req = request_mem_region(db->addr_res->start, i, - pdev->name); + mutex_unlock(&db->addr_lock); +} - if (db->addr_req == NULL) { - dev_err(db->dev, "cannot claim address reg area\n"); - ret = -EIO; - goto out; - } +/* + * Write a word data to SROM + */ +static void +dm9000_write_eeprom(board_info_t *db, int offset, u8 *data) +{ + unsigned long flags; - db->io_addr = ioremap(db->addr_res->start, i); + if (db->flags & DM9000_PLATF_NO_EEPROM) + return; - if (db->io_addr == NULL) { - dev_err(db->dev, "failed to ioremap address reg\n"); - ret = -EINVAL; - goto out; - } + 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); - iosize = res_size(db->data_res); - db->data_req = request_mem_region(db->data_res->start, iosize, - pdev->name); + dm9000_wait_eeprom(db); - if (db->data_req == NULL) { - dev_err(db->dev, "cannot claim data reg area\n"); - ret = -EIO; - goto out; - } + mdelay(1); /* wait at least 150uS to clear */ - db->io_data = ioremap(db->data_res->start, iosize); + spin_lock_irqsave(&db->lock, flags); + iow(db, DM9000_EPCR, 0); + spin_unlock_irqrestore(&db->lock, flags); - if (db->io_data == NULL) { - dev_err(db->dev,"failed to ioremap data reg\n"); - ret = -EINVAL; - goto out; - } + mutex_unlock(&db->addr_lock); +} - /* fill in parameters for net-dev structure */ +/* ethtool ops */ - ndev->base_addr = (unsigned long)db->io_addr; - ndev->irq = db->irq_res->start; +static void dm9000_get_drvinfo(struct net_device *dev, + struct ethtool_drvinfo *info) +{ + board_info_t *dm = to_dm9000_board(dev); - /* ensure at least we have a default set of IO routines */ - dm9000_set_io(db, iosize); - } + strcpy(info->driver, CARDNAME); + strcpy(info->version, DRV_VERSION); + strcpy(info->bus_info, to_platform_device(dm->dev)->name); +} - /* 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 */ +static u32 dm9000_get_msglevel(struct net_device *dev) +{ + board_info_t *dm = to_dm9000_board(dev); - if (pdata->flags & DM9000_PLATF_8BITONLY) - dm9000_set_io(db, 1); + return dm->msg_enable; +} - if (pdata->flags & DM9000_PLATF_16BITONLY) - dm9000_set_io(db, 2); +static void dm9000_set_msglevel(struct net_device *dev, u32 value) +{ + board_info_t *dm = to_dm9000_board(dev); - if (pdata->flags & DM9000_PLATF_32BITONLY) - dm9000_set_io(db, 4); + dm->msg_enable = value; +} - /* check to see if there are any IO routine - * over-rides */ +static int dm9000_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + board_info_t *dm = to_dm9000_board(dev); - if (pdata->inblk != NULL) - db->inblk = pdata->inblk; + mii_ethtool_gset(&dm->mii, cmd); + return 0; +} - if (pdata->outblk != NULL) - db->outblk = pdata->outblk; +static int dm9000_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + board_info_t *dm = to_dm9000_board(dev); - if (pdata->dumpblk != NULL) - db->dumpblk = pdata->dumpblk; + return mii_ethtool_sset(&dm->mii, cmd); +} - db->flags = pdata->flags; - } +static int dm9000_nway_reset(struct net_device *dev) +{ + board_info_t *dm = to_dm9000_board(dev); + return mii_nway_restart(&dm->mii); +} - dm9000_reset(db); +static uint32_t dm9000_get_rx_csum(struct net_device *dev) +{ + board_info_t *dm = to_dm9000_board(dev); + return dm->rx_csum; +} - /* try two times, DM9000 sometimes gets the first read wrong */ - for (i = 0; i < 2; 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; +static int dm9000_set_rx_csum(struct net_device *dev, uint32_t data) +{ + board_info_t *dm = to_dm9000_board(dev); + unsigned long flags; - if (id_val == DM9000_ID) - break; - dev_err(db->dev, "read wrong id 0x%08x\n", id_val); - } + if (dm->can_csum) { + dm->rx_csum = data; - if (id_val != DM9000_ID) { - dev_err(db->dev, "wrong id: 0x%08x\n", id_val); - ret = -ENODEV; - goto out; + spin_lock_irqsave(&dm->lock, flags); + iow(dm, DM9000_RCSR, dm->rx_csum ? RCSR_CSUM : 0); + spin_unlock_irqrestore(&dm->lock, flags); + + return 0; } - /* from this point we assume that we have found a DM9000 */ + return -EOPNOTSUPP; +} - /* driver system function */ - ether_setup(ndev); +static int dm9000_set_tx_csum(struct net_device *dev, uint32_t data) +{ + board_info_t *dm = to_dm9000_board(dev); + int ret = -EOPNOTSUPP; - 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; -#ifdef CONFIG_NET_POLL_CONTROLLER - ndev->poll_controller = &dm9000_poll_controller; -#endif + if (dm->can_csum) + ret = ethtool_op_set_tx_csum(dev, data); + return ret; +} -#ifdef DM9000_PROGRAM_EEPROM - program_eeprom(db); -#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; +static u32 dm9000_get_link(struct net_device *dev) +{ + board_info_t *dm = to_dm9000_board(dev); + u32 ret; - /* Read SROM content */ - for (i = 0; i < 64; i++) - ((u16 *) db->srom)[i] = read_srom_word(db, i); + if (dm->flags & DM9000_PLATF_EXT_PHY) + ret = mii_link_ok(&dm->mii); + else + ret = dm9000_read_locked(dm, DM9000_NSR) & NSR_LINKST ? 1 : 0; - /* Set Node Address */ - for (i = 0; i < 6; i++) - ndev->dev_addr[i] = db->srom[i]; + return ret; +} - if (!is_valid_ether_addr(ndev->dev_addr)) { - /* try reading from mac */ +#define DM_EEPROM_MAGIC (0x444D394B) - for (i = 0; i < 6; i++) - ndev->dev_addr[i] = ior(db, i+DM9000_PAR); - } +static int dm9000_get_eeprom_len(struct net_device *dev) +{ + return 128; +} - if (!is_valid_ether_addr(ndev->dev_addr)) - dev_warn(db->dev, "%s: Invalid ethernet MAC address. Please " - "set using ifconfig\n", ndev->name); +static int dm9000_get_eeprom(struct net_device *dev, + struct ethtool_eeprom *ee, u8 *data) +{ + board_info_t *dm = to_dm9000_board(dev); + int offset = ee->offset; + int len = ee->len; + int i; - platform_set_drvdata(pdev, ndev); - ret = register_netdev(ndev); + /* EEPROM access is aligned to two bytes */ - if (ret == 0) { - DECLARE_MAC_BUF(mac); - printk("%s: dm9000 at %p,%p IRQ %d MAC: %s\n", - ndev->name, db->io_addr, db->io_data, ndev->irq, - print_mac(mac, ndev->dev_addr)); - } - return 0; + if ((len & 1) != 0 || (offset & 1) != 0) + return -EINVAL; -out: - dev_err(db->dev, "not found (%d).\n", ret); + if (dm->flags & DM9000_PLATF_NO_EEPROM) + return -ENOENT; - dm9000_release_board(pdev, db); - free_netdev(ndev); + ee->magic = DM_EEPROM_MAGIC; - return ret; + for (i = 0; i < len; i += 2) + dm9000_read_eeprom(dm, (offset + i) / 2, data + i); + + return 0; } -/* - * Open the interface. - * The interface is opened whenever "ifconfig" actives it. - */ -static int -dm9000_open(struct net_device *dev) +static int dm9000_set_eeprom(struct net_device *dev, + struct ethtool_eeprom *ee, u8 *data) { - board_info_t *db = (board_info_t *) dev->priv; - unsigned long irqflags = db->irq_res->flags & IRQF_TRIGGER_MASK; + board_info_t *dm = to_dm9000_board(dev); + int offset = ee->offset; + int len = ee->len; + int i; - dev_dbg(db->dev, "entering %s\n", __func__); + /* EEPROM access is aligned to two bytes */ - /* If there is no IRQ type specified, default to something that - * may work, and tell the user that this is a problem */ + if ((len & 1) != 0 || (offset & 1) != 0) + return -EINVAL; - if (irqflags == IRQF_TRIGGER_NONE) { - dev_warn(db->dev, "WARNING: no IRQ resource flags set.\n"); - irqflags = DEFAULT_TRIGGER; - } - - irqflags |= IRQF_SHARED; + if (dm->flags & DM9000_PLATF_NO_EEPROM) + return -ENOENT; - if (request_irq(dev->irq, &dm9000_interrupt, irqflags, dev->name, dev)) - return -EAGAIN; + if (ee->magic != DM_EEPROM_MAGIC) + return -EINVAL; - /* Initialize DM9000 board */ - dm9000_reset(db); - dm9000_init_dm9000(dev); + for (i = 0; i < len; i += 2) + dm9000_write_eeprom(dm, (offset + i) / 2, data + i); - /* Init driver variable */ - db->dbug_cnt = 0; + return 0; +} - /* set and active a timer process */ - init_timer(&db->timer); - db->timer.expires = DM9000_TIMER_WUT; - db->timer.data = (unsigned long) dev; - db->timer.function = &dm9000_timer; - add_timer(&db->timer); +static void dm9000_get_wol(struct net_device *dev, struct ethtool_wolinfo *w) +{ + board_info_t *dm = to_dm9000_board(dev); - mii_check_media(&db->mii, netif_msg_link(db), 1); - netif_start_queue(dev); + memset(w, 0, sizeof(struct ethtool_wolinfo)); + + /* note, we could probably support wake-phy too */ + w->supported = dm->wake_supported ? WAKE_MAGIC : 0; + w->wolopts = dm->wake_state; +} + +static int dm9000_set_wol(struct net_device *dev, struct ethtool_wolinfo *w) +{ + board_info_t *dm = to_dm9000_board(dev); + unsigned long flags; + u32 opts = w->wolopts; + u32 wcr = 0; + + if (!dm->wake_supported) + return -EOPNOTSUPP; + + if (opts & ~WAKE_MAGIC) + return -EINVAL; + + if (opts & WAKE_MAGIC) + wcr |= WCR_MAGICEN; + + mutex_lock(&dm->addr_lock); + + spin_lock_irqsave(&dm->lock, flags); + iow(dm, DM9000_WCR, wcr); + spin_unlock_irqrestore(&dm->lock, flags); + + mutex_unlock(&dm->addr_lock); + + if (dm->wake_state != opts) { + /* change in wol state, update IRQ state */ + + if (!dm->wake_state) + set_irq_wake(dm->irq_wake, 1); + else if (dm->wake_state & !opts) + set_irq_wake(dm->irq_wake, 0); + } + dm->wake_state = opts; return 0; } +static const struct ethtool_ops dm9000_ethtool_ops = { + .get_drvinfo = dm9000_get_drvinfo, + .get_settings = dm9000_get_settings, + .set_settings = dm9000_set_settings, + .get_msglevel = dm9000_get_msglevel, + .set_msglevel = dm9000_set_msglevel, + .nway_reset = dm9000_nway_reset, + .get_link = dm9000_get_link, + .get_wol = dm9000_get_wol, + .set_wol = dm9000_set_wol, + .get_eeprom_len = dm9000_get_eeprom_len, + .get_eeprom = dm9000_get_eeprom, + .set_eeprom = dm9000_set_eeprom, + .get_rx_csum = dm9000_get_rx_csum, + .set_rx_csum = dm9000_set_rx_csum, + .get_tx_csum = ethtool_op_get_tx_csum, + .set_tx_csum = dm9000_set_tx_csum, +}; + +static void dm9000_show_carrier(board_info_t *db, + unsigned carrier, unsigned nsr) +{ + struct net_device *ndev = db->ndev; + unsigned ncr = dm9000_read_locked(db, DM9000_NCR); + + if (carrier) + dev_info(db->dev, "%s: link up, %dMbps, %s-duplex, no LPA\n", + ndev->name, (nsr & NSR_SPEED) ? 10 : 100, + (ncr & NCR_FDX) ? "full" : "half"); + else + dev_info(db->dev, "%s: link down\n", ndev->name); +} + +static void +dm9000_poll_work(struct work_struct *w) +{ + struct delayed_work *dw = to_delayed_work(w); + board_info_t *db = container_of(dw, board_info_t, phy_poll); + struct net_device *ndev = db->ndev; + + if (db->flags & DM9000_PLATF_SIMPLE_PHY && + !(db->flags & DM9000_PLATF_EXT_PHY)) { + unsigned nsr = dm9000_read_locked(db, DM9000_NSR); + unsigned old_carrier = netif_carrier_ok(ndev) ? 1 : 0; + unsigned new_carrier; + + new_carrier = (nsr & NSR_LINKST) ? 1 : 0; + + if (old_carrier != new_carrier) { + if (netif_msg_link(db)) + dm9000_show_carrier(db, new_carrier, nsr); + + if (!new_carrier) + netif_carrier_off(ndev); + else + netif_carrier_on(ndev); + } + } else + mii_check_media(&db->mii, netif_msg_link(db), 0); + + if (netif_running(ndev)) + dm9000_schedule_poll(db); +} + +/* dm9000_release_board + * + * release a board, and any mapped resources + */ + +static void +dm9000_release_board(struct platform_device *pdev, struct board_info *db) +{ + /* unmap our resources */ + + iounmap(db->io_addr); + iounmap(db->io_data); + + /* release the resources */ + + release_resource(db->data_req); + kfree(db->data_req); + + release_resource(db->addr_req); + kfree(db->addr_req); +} + +static unsigned char dm9000_type_to_char(enum dm9000_type type) +{ + switch (type) { + case TYPE_DM9000E: return 'e'; + case TYPE_DM9000A: return 'a'; + case TYPE_DM9000B: return 'b'; + } + + return '?'; +} + +/* + * Set DM9000 multicast address + */ +static void +dm9000_hash_table(struct net_device *dev) +{ + board_info_t *db = netdev_priv(dev); + 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); + + for (i = 0, oft = DM9000_PAR; i < 6; i++, oft++) + iow(db, oft, dev->dev_addr[i]); + + /* Clear Hash Table */ + for (i = 0; i < 4; i++) + hash_table[i] = 0x0; + + /* broadcast address */ + hash_table[3] = 0x8000; + + if (dev->flags & IFF_PROMISC) + rcr |= RCR_PRMSC; + + if (dev->flags & IFF_ALLMULTI) + rcr |= RCR_ALL; + + /* 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); + } + + /* 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); + } + + iow(db, DM9000_RCR, rcr); + spin_unlock_irqrestore(&db->lock, flags); +} + /* * Initilize dm9000 board */ static void dm9000_init_dm9000(struct net_device *dev) { - board_info_t *db = (board_info_t *) dev->priv; + board_info_t *db = netdev_priv(dev); + unsigned int imr; + unsigned int ncr; dm9000_dbg(db, 1, "entering %s\n", __func__); /* I/O mode */ db->io_mode = ior(db, DM9000_ISR) >> 6; /* ISR bit7:6 keeps I/O mode */ + /* Checksum mode */ + dm9000_set_rx_csum(dev, db->rx_csum); + /* GPIO0 on pre-activate PHY */ iow(db, DM9000_GPR, 0); /* REG_1F bit0 activate phyxcer */ iow(db, DM9000_GPCR, GPCR_GEP_CNTL); /* Let GPIO0 output */ iow(db, DM9000_GPR, 0); /* Enable PHY */ - if (db->flags & DM9000_PLATF_EXT_PHY) - iow(db, DM9000_NCR, NCR_EXT_PHY); + ncr = (db->flags & DM9000_PLATF_EXT_PHY) ? NCR_EXT_PHY : 0; + + /* if wol is needed, then always set NCR_WAKEEN otherwise we end + * up dumping the wake events if we disable this. There is already + * a wake-mask in DM9000_WCR */ + if (db->wake_supported) + ncr |= NCR_WAKEEN; + + iow(db, DM9000_NCR, ncr); /* Program operating register */ iow(db, DM9000_TCR, 0); /* TX Polling clear */ @@ -684,10 +813,14 @@ dm9000_init_dm9000(struct net_device *dev) /* Set address filter table */ dm9000_hash_table(dev); - /* Activate DM9000 */ - iow(db, DM9000_RCR, RCR_DIS_LONG | RCR_DIS_CRC | RCR_RXEN); + imr = IMR_PAR | IMR_PTM | IMR_PRM; + if (db->type != TYPE_DM9000E) + imr |= IMR_LNKCHNG; + + db->imr_all = imr; + /* Enable TX/RX interrupt mask */ - iow(db, DM9000_IMR, IMR_PAR | IMR_PTM | IMR_PRM); + iow(db, DM9000_IMR, imr); /* Init Driver variable */ db->tx_pkt_cnt = 0; @@ -695,6 +828,52 @@ 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 = netdev_priv(dev); + 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); +} + +static void dm9000_send_packet(struct net_device *dev, + int ip_summed, + u16 pkt_len) +{ + board_info_t *dm = to_dm9000_board(dev); + + /* The DM9000 is not smart enough to leave fragmented packets alone. */ + if (dm->ip_summed != ip_summed) { + if (ip_summed == CHECKSUM_NONE) + iow(dm, DM9000_TCCR, 0); + else + iow(dm, DM9000_TCCR, TCCR_IP | TCCR_UDP | TCCR_TCP); + dm->ip_summed = ip_summed; + } + + /* Set TX length to DM9000 */ + iow(dm, DM9000_TXPLL, pkt_len); + iow(dm, DM9000_TXPLH, pkt_len >> 8); + + /* Issue TX polling command */ + iow(dm, DM9000_TCR, TCR_TXREQ); /* Cleared after TX complete */ +} + /* * Hardware start transmission. * Send a packet to media from the upper layer. @@ -703,12 +882,12 @@ static int dm9000_start_xmit(struct sk_buff *skb, struct net_device *dev) { unsigned long flags; - board_info_t *db = (board_info_t *) dev->priv; + board_info_t *db = netdev_priv(dev); dm9000_dbg(db, 3, "%s:\n", __func__); if (db->tx_pkt_cnt > 1) - return 1; + return NETDEV_TX_BUSY; spin_lock_irqsave(&db->lock, flags); @@ -721,17 +900,11 @@ dm9000_start_xmit(struct sk_buff *skb, struct net_device *dev) db->tx_pkt_cnt++; /* TX control: First packet immediately send, second packet queue */ if (db->tx_pkt_cnt == 1) { - /* Set TX length to DM9000 */ - iow(db, DM9000_TXPLL, skb->len & 0xff); - iow(db, DM9000_TXPLH, (skb->len >> 8) & 0xff); - - /* Issue TX polling command */ - iow(db, DM9000_TCR, TCR_TXREQ); /* Cleared after TX complete */ - - dev->trans_start = jiffies; /* save the time stamp */ + dm9000_send_packet(dev, skb->ip_summed, skb->len); } else { /* Second packet */ db->queue_pkt_len = skb->len; + db->queue_ip_summed = skb->ip_summed; netif_stop_queue(dev); } @@ -740,44 +913,7 @@ dm9000_start_xmit(struct sk_buff *skb, struct net_device *dev) /* free this SKB */ dev_kfree_skb(skb); - return 0; -} - -static void -dm9000_shutdown(struct net_device *dev) -{ - board_info_t *db = (board_info_t *) 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 = (board_info_t *) ndev->priv; - - dm9000_dbg(db, 1, "entering %s\n", __func__); - - /* deleted timer */ - del_timer(&db->timer); - - netif_stop_queue(ndev); - netif_carrier_off(ndev); - - /* free interrupt */ - free_irq(ndev->irq, ndev); - - dm9000_shutdown(ndev); - - return 0; + return NETDEV_TX_OK; } /* @@ -785,8 +921,7 @@ dm9000_stop(struct net_device *ndev) * 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 */ @@ -795,83 +930,21 @@ dm9000_tx_done(struct net_device *dev, board_info_t * db) db->tx_pkt_cnt--; dev->stats.tx_packets++; + if (netif_msg_tx_done(db)) + dev_dbg(db->dev, "tx done, NSR %02x\n", tx_status); + /* Queue packet check & send */ - if (db->tx_pkt_cnt > 0) { - iow(db, DM9000_TXPLL, db->queue_pkt_len & 0xff); - iow(db, DM9000_TXPLH, (db->queue_pkt_len >> 8) & 0xff); - iow(db, DM9000_TCR, TCR_TXREQ); - dev->trans_start = jiffies; - } + if (db->tx_pkt_cnt > 0) + dm9000_send_packet(dev, db->queue_ip_summed, + db->queue_pkt_len); netif_wake_queue(dev); } } -static irqreturn_t -dm9000_interrupt(int irq, void *dev_id) -{ - struct net_device *dev = dev_id; - board_info_t *db = (board_info_t *) 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 */ - - /* 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); - - /* Re-enable interrupt mask */ - iow(db, DM9000_IMR, IMR_PAR | IMR_PTM | IMR_PRM); - - /* Restore previous register address */ - writeb(reg_save, db->io_addr); - - spin_unlock(&db->lock); - - return IRQ_HANDLED; -} - -/* - * A periodic timer routine - * Dynamic media sense, allocated Rx buffer... - */ -static void -dm9000_timer(unsigned long data) -{ - struct net_device *dev = (struct net_device *) data; - board_info_t *db = (board_info_t *) dev->priv; - - dm9000_dbg(db, 3, "entering %s\n", __func__); - - mii_check_media(&db->mii, netif_msg_link(db), 0); - - /* Set timer again */ - db->timer.expires = DM9000_TIMER_WUT; - add_timer(&db->timer); -} - struct dm9000_rxhdr { u8 RxPktReady; u8 RxStatus; - u16 RxLen; + __le16 RxLen; } __attribute__((__packed__)); /* @@ -880,7 +953,7 @@ struct dm9000_rxhdr { static void dm9000_rx(struct net_device *dev) { - board_info_t *db = (board_info_t *) dev->priv; + board_info_t *db = netdev_priv(dev); struct dm9000_rxhdr rxhdr; struct sk_buff *skb; u8 rxbyte, *rdptr; @@ -895,14 +968,14 @@ dm9000_rx(struct net_device *dev) rxbyte = readb(db->io_data); /* Status check: this byte must be 0 or 1 */ - if (rxbyte > DM9000_PKT_RDY) { + if (rxbyte & DM9000_PKT_ERR) { dev_warn(db->dev, "status check fail: %d\n", rxbyte); iow(db, DM9000_RCR, 0x00); /* Stop Device */ iow(db, DM9000_ISR, IMR_PAR); /* Stop INT request */ return; } - if (rxbyte != DM9000_PKT_RDY) + if (!(rxbyte & DM9000_PKT_RDY)) return; /* A packet ready now & Get status/length */ @@ -913,35 +986,46 @@ dm9000_rx(struct net_device *dev) RxLen = le16_to_cpu(rxhdr.RxLen); + if (netif_msg_rx_status(db)) + dev_dbg(db->dev, "RX: status %02x, length %04x\n", + rxhdr.RxStatus, RxLen); + /* Packet Status check */ if (RxLen < 0x40) { GoodPacket = false; - dev_dbg(db->dev, "Bad Packet received (runt)\n"); + if (netif_msg_rx_err(db)) + dev_dbg(db->dev, "RX: Bad Packet (runt)\n"); } if (RxLen > DM9000_PKT_MAX) { dev_dbg(db->dev, "RST: RX Len:%x\n", RxLen); } - if (rxhdr.RxStatus & 0xbf) { + /* rxhdr.RxStatus is identical to RSR register. */ + if (rxhdr.RxStatus & (RSR_FOE | RSR_CE | RSR_AE | + RSR_PLE | RSR_RWTO | + RSR_LCS | RSR_RF)) { GoodPacket = false; - if (rxhdr.RxStatus & 0x01) { - dev_dbg(db->dev, "fifo error\n"); + if (rxhdr.RxStatus & RSR_FOE) { + if (netif_msg_rx_err(db)) + dev_dbg(db->dev, "fifo error\n"); dev->stats.rx_fifo_errors++; } - if (rxhdr.RxStatus & 0x02) { - dev_dbg(db->dev, "crc error\n"); + if (rxhdr.RxStatus & RSR_CE) { + if (netif_msg_rx_err(db)) + dev_dbg(db->dev, "crc error\n"); dev->stats.rx_crc_errors++; } - if (rxhdr.RxStatus & 0x80) { - dev_dbg(db->dev, "length error\n"); + if (rxhdr.RxStatus & RSR_RF) { + if (netif_msg_rx_err(db)) + dev_dbg(db->dev, "length error\n"); dev->stats.rx_length_errors++; } } /* Move data from DM9000 */ - if (GoodPacket - && ((skb = dev_alloc_skb(RxLen + 4)) != NULL)) { + if (GoodPacket && + ((skb = dev_alloc_skb(RxLen + 4)) != NULL)) { skb_reserve(skb, 2); rdptr = (u8 *) skb_put(skb, RxLen - 4); @@ -952,6 +1036,12 @@ dm9000_rx(struct net_device *dev) /* Pass to upper layer */ skb->protocol = eth_type_trans(skb, dev); + if (db->rx_csum) { + if ((((rxbyte & 0x1c) << 3) & rxbyte) == 0) + skb->ip_summed = CHECKSUM_UNNECESSARY; + else + skb->ip_summed = CHECKSUM_NONE; + } netif_rx(skb); dev->stats.rx_packets++; @@ -960,119 +1050,160 @@ dm9000_rx(struct net_device *dev) (db->dumpblk)(db->io_data, RxLen); } - } while (rxbyte == DM9000_PKT_RDY); + } while (rxbyte & DM9000_PKT_RDY); } -/* - * Read a word data from SROM - */ -static u16 -read_srom_word(board_info_t * db, int offset) +static irqreturn_t dm9000_interrupt(int irq, void *dev_id) { - iow(db, DM9000_EPAR, offset); - iow(db, DM9000_EPCR, EPCR_ERPRR); - mdelay(8); /* according to the datasheet 200us should be enough, - but it doesn't work */ - iow(db, DM9000_EPCR, 0x0); - return (ior(db, DM9000_EPDRL) + (ior(db, DM9000_EPDRH) << 8)); -} + struct net_device *dev = dev_id; + board_info_t *db = netdev_priv(dev); + int int_status; + unsigned long flags; + u8 reg_save; -#ifdef DM9000_PROGRAM_EEPROM -/* - * Write a word data to SROM - */ -static void -write_srom_word(board_info_t * db, int offset, u16 val) -{ - iow(db, DM9000_EPAR, offset); - iow(db, DM9000_EPDRH, ((val >> 8) & 0xff)); - iow(db, DM9000_EPDRL, (val & 0xff)); - iow(db, DM9000_EPCR, EPCR_WEP | EPCR_ERPRW); - mdelay(8); /* same shit */ - iow(db, DM9000_EPCR, 0); -} + dm9000_dbg(db, 3, "entering %s\n", __func__); -/* - * Only for development: - * Here we write static data to the eeprom in case - * we don't have valid content on a new board - */ -static void -program_eeprom(board_info_t * db) -{ - u16 eeprom[] = { 0x0c00, 0x007f, 0x1300, /* MAC Address */ - 0x0000, /* Autoload: accept nothing */ - 0x0a46, 0x9000, /* Vendor / Product ID */ - 0x0000, /* pin control */ - 0x0000, - }; /* Wake-up mode control */ - int i; - for (i = 0; i < 8; i++) - write_srom_word(db, i, eeprom[i]); -} -#endif + /* A real interrupt coming */ + /* holders of db->lock must always block IRQs */ + spin_lock_irqsave(&db->lock, flags); -/* - * Calculate the CRC valude of the Rx packet - * flag = 1 : return the reverse CRC (for the received packet CRC) - * 0 : return the normal CRC (for Hash Table index) - */ + /* Save previous register address */ + reg_save = readb(db->io_addr); -static unsigned long -cal_CRC(unsigned char *Data, unsigned int Len, u8 flag) -{ + /* Disable all interrupts */ + iow(db, DM9000_IMR, IMR_PAR); - u32 crc = ether_crc_le(Len, Data); + /* Got DM9000 interrupt status */ + int_status = ior(db, DM9000_ISR); /* Got ISR */ + iow(db, DM9000_ISR, int_status); /* Clear ISR status */ - if (flag) - return ~crc; + if (netif_msg_intr(db)) + dev_dbg(db->dev, "interrupt status %02x\n", int_status); - return crc; -} + /* Received the coming packet */ + if (int_status & ISR_PRS) + dm9000_rx(dev); -/* - * Set DM9000 multicast address - */ -static void -dm9000_hash_table(struct net_device *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_irqrestore(&db->lock, flags); + + return IRQ_HANDLED; +} + +static irqreturn_t dm9000_wol_interrupt(int irq, void *dev_id) { - board_info_t *db = (board_info_t *) dev->priv; - struct dev_mc_list *mcptr = dev->mc_list; - int mc_cnt = dev->mc_count; - u32 hash_val; - u16 i, oft, hash_table[4]; + struct net_device *dev = dev_id; + board_info_t *db = netdev_priv(dev); unsigned long flags; + unsigned nsr, wcr; - dm9000_dbg(db, 1, "entering %s\n", __func__); + spin_lock_irqsave(&db->lock, flags); - spin_lock_irqsave(&db->lock,flags); + nsr = ior(db, DM9000_NSR); + wcr = ior(db, DM9000_WCR); - for (i = 0, oft = 0x10; i < 6; i++, oft++) - iow(db, oft, dev->dev_addr[i]); + dev_dbg(db->dev, "%s: NSR=0x%02x, WCR=0x%02x\n", __func__, nsr, wcr); - /* Clear Hash Table */ - for (i = 0; i < 4; i++) - hash_table[i] = 0x0; + if (nsr & NSR_WAKEST) { + /* clear, so we can avoid */ + iow(db, DM9000_NSR, NSR_WAKEST); - /* broadcast address */ - hash_table[3] = 0x8000; + if (wcr & WCR_LINKST) + dev_info(db->dev, "wake by link status change\n"); + if (wcr & WCR_SAMPLEST) + dev_info(db->dev, "wake by sample packet\n"); + if (wcr & WCR_MAGICST ) + dev_info(db->dev, "wake by magic packet\n"); + if (!(wcr & (WCR_LINKST | WCR_SAMPLEST | WCR_MAGICST))) + dev_err(db->dev, "wake signalled with no reason? " + "NSR=0x%02x, WSR=0x%02x\n", nsr, wcr); - /* the multicast address in Hash Table : 64 bits */ - for (i = 0; i < mc_cnt; i++, mcptr = mcptr->next) { - hash_val = cal_CRC((char *) mcptr->dmi_addr, 6, 0) & 0x3f; - hash_table[hash_val / 16] |= (u16) 1 << (hash_val % 16); } - /* Write the hash table to MAC MD table */ - for (i = 0, oft = 0x16; i < 4; i++) { - iow(db, oft++, hash_table[i] & 0xff); - iow(db, oft++, (hash_table[i] >> 8) & 0xff); - } + spin_unlock_irqrestore(&db->lock, flags); - spin_unlock_irqrestore(&db->lock,flags); + return (nsr & NSR_WAKEST) ? IRQ_HANDLED : IRQ_NONE; +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +/* + *Used by netconsole + */ +static void dm9000_poll_controller(struct net_device *dev) +{ + disable_irq(dev->irq); + dm9000_interrupt(dev->irq, dev); + enable_irq(dev->irq); +} +#endif + +/* + * Open the interface. + * The interface is opened whenever "ifconfig" actives it. + */ +static int +dm9000_open(struct net_device *dev) +{ + board_info_t *db = netdev_priv(dev); + 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 |= 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; } +/* + * Sleep, either by using msleep() or if we are suspending, then + * use mdelay() to sleep. + */ +static void dm9000_msleep(board_info_t *db, unsigned int ms) +{ + if (db->in_suspend) + mdelay(ms); + else + msleep(ms); +} /* * Read a word from phyxcer @@ -1080,11 +1211,13 @@ dm9000_hash_table(struct net_device *dev) static int dm9000_phy_read(struct net_device *dev, int phy_reg_unused, int reg) { - board_info_t *db = (board_info_t *) dev->priv; + board_info_t *db = netdev_priv(dev); unsigned long flags; unsigned int reg_save; int ret; + mutex_lock(&db->addr_lock); + spin_lock_irqsave(&db->lock,flags); /* Save previous register address */ @@ -1093,8 +1226,16 @@ dm9000_phy_read(struct net_device *dev, int phy_reg_unused, int reg) /* Fill the phyxcer register into REG_0C */ iow(db, DM9000_EPAR, DM9000_PHY | reg); - iow(db, DM9000_EPCR, 0xc); /* Issue phyxcer read command */ - udelay(100); /* Wait read complete */ + iow(db, DM9000_EPCR, EPCR_ERPRR | EPCR_EPOS); /* Issue phyxcer read command */ + + writeb(reg_save, db->io_addr); + spin_unlock_irqrestore(&db->lock,flags); + + dm9000_msleep(db, 1); /* Wait read complete */ + + spin_lock_irqsave(&db->lock,flags); + reg_save = readb(db->io_addr); + iow(db, DM9000_EPCR, 0x0); /* Clear phyxcer read command */ /* The read data keeps on REG_0D & REG_0E */ @@ -1102,9 +1243,11 @@ dm9000_phy_read(struct net_device *dev, int phy_reg_unused, int reg) /* restore the previous address */ writeb(reg_save, db->io_addr); - spin_unlock_irqrestore(&db->lock,flags); + mutex_unlock(&db->addr_lock); + + dm9000_dbg(db, 5, "phy_read[%02x] -> %04x\n", reg, ret); return ret; } @@ -1112,12 +1255,16 @@ dm9000_phy_read(struct net_device *dev, int phy_reg_unused, int reg) * Write a word to phyxcer */ static void -dm9000_phy_write(struct net_device *dev, int phyaddr_unused, int reg, int value) +dm9000_phy_write(struct net_device *dev, + int phyaddr_unused, int reg, int value) { - board_info_t *db = (board_info_t *) dev->priv; + board_info_t *db = netdev_priv(dev); unsigned long flags; unsigned long reg_save; + dm9000_dbg(db, 5, "phy_write[%02x] = %04x\n", reg, value); + mutex_lock(&db->addr_lock); + spin_lock_irqsave(&db->lock,flags); /* Save previous register address */ @@ -1127,52 +1274,384 @@ dm9000_phy_write(struct net_device *dev, int phyaddr_unused, int reg, int value) iow(db, DM9000_EPAR, DM9000_PHY | reg); /* Fill the written data into REG_0D & REG_0E */ - iow(db, DM9000_EPDRL, (value & 0xff)); - iow(db, DM9000_EPDRH, ((value >> 8) & 0xff)); + iow(db, DM9000_EPDRL, value); + iow(db, DM9000_EPDRH, value >> 8); + + iow(db, DM9000_EPCR, EPCR_EPOS | EPCR_ERPRW); /* Issue phyxcer write command */ + + writeb(reg_save, db->io_addr); + spin_unlock_irqrestore(&db->lock, flags); + + dm9000_msleep(db, 1); /* Wait write complete */ + + spin_lock_irqsave(&db->lock,flags); + reg_save = readb(db->io_addr); - iow(db, DM9000_EPCR, 0xa); /* Issue phyxcer write command */ - udelay(500); /* Wait write complete */ iow(db, DM9000_EPCR, 0x0); /* Clear phyxcer write command */ /* restore the previous address */ writeb(reg_save, db->io_addr); - spin_unlock_irqrestore(&db->lock,flags); + spin_unlock_irqrestore(&db->lock, flags); + mutex_unlock(&db->addr_lock); +} + +static void +dm9000_shutdown(struct net_device *dev) +{ + board_info_t *db = netdev_priv(dev); + + /* 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_drv_suspend(struct platform_device *dev, pm_message_t state) +dm9000_stop(struct net_device *ndev) { - struct net_device *ndev = platform_get_drvdata(dev); + board_info_t *db = netdev_priv(ndev); - if (ndev) { - if (netif_running(ndev)) { - netif_device_detach(ndev); - dm9000_shutdown(ndev); + 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; +} + +static const struct net_device_ops dm9000_netdev_ops = { + .ndo_open = dm9000_open, + .ndo_stop = dm9000_stop, + .ndo_start_xmit = dm9000_start_xmit, + .ndo_tx_timeout = dm9000_timeout, + .ndo_set_multicast_list = dm9000_hash_table, + .ndo_do_ioctl = dm9000_ioctl, + .ndo_change_mtu = eth_change_mtu, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_mac_address = eth_mac_addr, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = dm9000_poll_controller, +#endif +}; + +/* + * 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 = netdev_priv(ndev); + + 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; + } + + db->irq_wake = platform_get_irq(pdev, 1); + if (db->irq_wake >= 0) { + dev_dbg(db->dev, "wakeup irq %d\n", db->irq_wake); + + ret = request_irq(db->irq_wake, dm9000_wol_interrupt, + IRQF_SHARED, dev_name(db->dev), ndev); + if (ret) { + dev_err(db->dev, "cannot get wakeup irq (%d)\n", ret); + } else { + + /* test to see if irq is really wakeup capable */ + ret = set_irq_wake(db->irq_wake, 1); + if (ret) { + dev_err(db->dev, "irq %d cannot set wakeup (%d)\n", + db->irq_wake, ret); + ret = 0; + } else { + set_irq_wake(db->irq_wake, 0); + db->wake_supported = 1; + } } } + + iosize = resource_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 = resource_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; + } + +#ifdef CONFIG_DM9000_FORCE_SIMPLE_PHY_POLL + db->flags |= DM9000_PLATF_SIMPLE_PHY; +#endif + + 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; + } + + /* dm9000a/b are capable of hardware checksum offload */ + if (db->type == TYPE_DM9000A || db->type == TYPE_DM9000B) { + db->can_csum = 1; + db->rx_csum = 1; + ndev->features |= NETIF_F_IP_CSUM; + } + + /* from this point we assume that we have found a DM9000 */ + + /* driver system function */ + ether_setup(ndev); + + ndev->netdev_ops = &dm9000_netdev_ops; + ndev->watchdog_timeo = msecs_to_jiffies(watchdog); + ndev->ethtool_ops = &dm9000_ethtool_ops; + + 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) && pdata != NULL) { + mac_src = "platform data"; + memcpy(ndev->dev_addr, pdata->dev_addr, 6); + } + + 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) + printk(KERN_INFO "%s: dm9000%c at %p,%p IRQ %d MAC: %pM (%s)\n", + ndev->name, dm9000_type_to_char(db->type), + db->io_addr, db->io_data, ndev->irq, + 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_resume(struct platform_device *dev) +dm9000_drv_suspend(struct device *dev) { - struct net_device *ndev = platform_get_drvdata(dev); - board_info_t *db = (board_info_t *) ndev->priv; + struct platform_device *pdev = to_platform_device(dev); + struct net_device *ndev = platform_get_drvdata(pdev); + board_info_t *db; if (ndev) { + db = netdev_priv(ndev); + db->in_suspend = 1; + + if (!netif_running(ndev)) + return 0; + + netif_device_detach(ndev); + + /* only shutdown if not using WoL */ + if (!db->wake_state) + dm9000_shutdown(ndev); + } + return 0; +} +static int +dm9000_drv_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct net_device *ndev = platform_get_drvdata(pdev); + board_info_t *db = netdev_priv(ndev); + + if (ndev) { if (netif_running(ndev)) { - dm9000_reset(db); - dm9000_init_dm9000(ndev); + /* reset if we were not in wake mode to ensure if + * the device was powered off it is in a known state */ + if (!db->wake_state) { + dm9000_reset(db); + dm9000_init_dm9000(ndev); + } netif_device_attach(ndev); } + + db->in_suspend = 0; } return 0; } -static int +static const struct dev_pm_ops dm9000_drv_pm_ops = { + .suspend = dm9000_drv_suspend, + .resume = dm9000_drv_resume, +}; + +static int __devexit dm9000_drv_remove(struct platform_device *pdev) { struct net_device *ndev = platform_get_drvdata(pdev); @@ -1180,7 +1659,7 @@ dm9000_drv_remove(struct platform_device *pdev) platform_set_drvdata(pdev, NULL); unregister_netdev(ndev); - dm9000_release_board(pdev, (board_info_t *) ndev->priv); + dm9000_release_board(pdev, (board_info_t *) netdev_priv(ndev)); free_netdev(ndev); /* free device structure */ dev_dbg(&pdev->dev, "released and freed device\n"); @@ -1191,19 +1670,18 @@ static struct platform_driver dm9000_driver = { .driver = { .name = "dm9000", .owner = THIS_MODULE, + .pm = &dm9000_drv_pm_ops, }, .probe = dm9000_probe, - .remove = dm9000_drv_remove, - .suspend = dm9000_drv_suspend, - .resume = dm9000_drv_resume, + .remove = __devexit_p(dm9000_drv_remove), }; static int __init dm9000_init(void) { - printk(KERN_INFO "%s Ethernet Driver\n", CARDNAME); + printk(KERN_INFO "%s Ethernet Driver, V%s\n", CARDNAME, DRV_VERSION); - return platform_driver_register(&dm9000_driver); /* search board and register */ + return platform_driver_register(&dm9000_driver); } static void __exit @@ -1218,3 +1696,4 @@ module_exit(dm9000_cleanup); MODULE_AUTHOR("Sascha Hauer, Ben Dooks"); MODULE_DESCRIPTION("Davicom DM9000 network driver"); MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:dm9000");