X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Fnet%2Fdm9000.c;h=08a7365a7d1051268c0b9b63cd3e410119a55d26;hb=b99a017c01bb19b58fd0826e36a1bdacf581c545;hp=25227222e086070e29ae02db2375bd43150eb21c;hpb=3ae5eaec1d2d9c0cf53745352e7d4b152810ba24;p=safe%2Fjmp%2Flinux-2.6 diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c index 2522722..08a7365 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. + * (C) Copyright 1997-1998 DAVICOM Semiconductor,Inc. All Rights Reserved. * - * 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 - * - * 01-Jul-2005 Ben Dooks - * * fixed spinlock call without pointer - * * ensure spinlock is initialised + * Additional updates, Copyright: + * Ben Dooks + * Sascha Hauer */ #include @@ -60,13 +25,14 @@ #include #include #include -#include #include #include #include +#include #include #include #include +#include #include #include @@ -78,34 +44,20 @@ #define DM9000_PHY 0x40 /* PHY address 0x01 */ -#define TRUE 1 -#define FALSE 0 - #define CARDNAME "dm9000" #define PFX CARDNAME ": " - -#define DM9000_TIMER_WUT jiffies+(HZ*2) /* timer wakeup time : 2 second */ - -#define DM9000_DEBUG 0 - -#if DM9000_DEBUG > 2 -#define PRINTK3(args...) printk(CARDNAME ": " args) -#else -#define PRINTK3(args...) do { } while(0) -#endif - -#if DM9000_DEBUG > 1 -#define PRINTK2(args...) printk(CARDNAME ": " args) -#else -#define PRINTK2(args...) do { } while(0) -#endif - -#if DM9000_DEBUG > 0 -#define PRINTK1(args...) printk(CARDNAME ": " args) -#define PRINTK(args...) printk(CARDNAME ": " args) +#define DRV_VERSION "1.30" + +#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 PRINTK1(args...) do { } while(0) -#define PRINTK(args...) printk(KERN_DEBUG args) +#define DEFAULT_TRIGGER (0) #endif /* @@ -115,6 +67,24 @@ 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. + */ + /* Structure/enum declaration ------------------------------- */ typedef struct board_info { @@ -128,57 +98,75 @@ typedef struct board_info { u16 dbug_cnt; u8 io_mode; /* 0:word, 2:byte */ u8 phy_addr; + unsigned int flags; + unsigned int in_suspend :1; + + int debug_level; void (*inblk)(void __iomem *port, void *data, int length); void (*outblk)(void __iomem *port, void *data, int length); void (*dumpblk)(void __iomem *port, int length); + struct device *dev; /* parent device */ + struct resource *addr_res; /* resources found */ struct resource *data_res; struct resource *addr_req; /* resources requested */ struct resource *data_req; struct resource *irq_res; - struct timer_list timer; - struct net_device_stats stats; - unsigned char srom[128]; + 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; } board_info_t; +/* debug code */ + +#define dm9000_dbg(db, lev, msg...) do { \ + if ((lev) < CONFIG_DM9000_DEBUGLEVEL && \ + (lev) < db->debug_level) { \ + dev_dbg(db->dev, msg); \ + } \ +} while (0) + +static inline board_info_t *to_dm9000_board(struct net_device *dev) +{ + return dev->priv; +} + /* 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 int dm9000_ioctl(struct net_device *dev, struct ifreq *req, int cmd); - -static void dm9000_timer(unsigned long); static void dm9000_init_dm9000(struct net_device *); -static struct net_device_stats *dm9000_get_stats(struct net_device *); - -static irqreturn_t dm9000_interrupt(int, void *, struct pt_regs *); +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_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 *); -//#define DM9000_PROGRAM_EEPROM -#ifdef DM9000_PROGRAM_EEPROM -static void program_eeprom(board_info_t * db); -#endif /* DM9000 network board routine ---------------------------- */ static void dm9000_reset(board_info_t * db) { - PRINTK1("dm9000x: resetting\n"); + dev_dbg(db->dev, "resetting device\n"); + /* RESET device */ writeb(DM9000_NCR, db->io_addr); udelay(200); @@ -294,14 +282,10 @@ static void dm9000_set_io(struct board_info *db, int byte_width) db->inblk = dm9000_inblk_8bit; break; - case 2: - db->dumpblk = dm9000_dumpblk_16bit; - db->outblk = dm9000_outblk_16bit; - db->inblk = dm9000_inblk_16bit; - break; case 3: - printk(KERN_ERR PFX ": 3 byte IO, falling back to 16bit\n"); + dev_dbg(db->dev, ": 3 byte IO, falling back to 16bit\n"); + case 2: db->dumpblk = dm9000_dumpblk_16bit; db->outblk = dm9000_outblk_16bit; db->inblk = dm9000_inblk_16bit; @@ -316,6 +300,10 @@ static void dm9000_set_io(struct board_info *db, int byte_width) } } +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) @@ -340,6 +328,161 @@ static void dm9000_timeout(struct net_device *dev) spin_unlock_irqrestore(&db->lock,flags); } +#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 + +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); +} + +/* ethtool ops */ + +static void dm9000_get_drvinfo(struct net_device *dev, + struct ethtool_drvinfo *info) +{ + board_info_t *dm = to_dm9000_board(dev); + + strcpy(info->driver, CARDNAME); + strcpy(info->version, DRV_VERSION); + strcpy(info->bus_info, to_platform_device(dm->dev)->name); +} + +static u32 dm9000_get_msglevel(struct net_device *dev) +{ + board_info_t *dm = to_dm9000_board(dev); + + return dm->msg_enable; +} + +static void dm9000_set_msglevel(struct net_device *dev, u32 value) +{ + board_info_t *dm = to_dm9000_board(dev); + + dm->msg_enable = value; +} + +static int dm9000_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + board_info_t *dm = to_dm9000_board(dev); + + mii_ethtool_gset(&dm->mii, cmd); + return 0; +} + +static int dm9000_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + board_info_t *dm = to_dm9000_board(dev); + + return mii_ethtool_sset(&dm->mii, cmd); +} + +static int dm9000_nway_reset(struct net_device *dev) +{ + board_info_t *dm = to_dm9000_board(dev); + return mii_nway_restart(&dm->mii); +} + +static u32 dm9000_get_link(struct net_device *dev) +{ + board_info_t *dm = to_dm9000_board(dev); + return mii_link_ok(&dm->mii); +} + +#define DM_EEPROM_MAGIC (0x444D394B) + +static int dm9000_get_eeprom_len(struct net_device *dev) +{ + return 128; +} + +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; + + /* EEPROM access is aligned to two bytes */ + + if ((len & 1) != 0 || (offset & 1) != 0) + return -EINVAL; + + if (dm->flags & DM9000_PLATF_NO_EEPROM) + return -ENOENT; + + ee->magic = DM_EEPROM_MAGIC; + + for (i = 0; i < len; i += 2) + dm9000_read_eeprom(dm, (offset + i) / 2, data + i); + + return 0; +} + +static int dm9000_set_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; + + /* EEPROM access is aligned to two bytes */ + + if ((len & 1) != 0 || (offset & 1) != 0) + return -EINVAL; + + if (dm->flags & DM9000_PLATF_NO_EEPROM) + return -ENOENT; + + if (ee->magic != DM_EEPROM_MAGIC) + return -EINVAL; + + for (i = 0; i < len; i += 2) + dm9000_write_eeprom(dm, (offset + i) / 2, data + i); + + 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_eeprom_len = dm9000_get_eeprom_len, + .get_eeprom = dm9000_get_eeprom, + .set_eeprom = dm9000_set_eeprom, +}; + +static void +dm9000_poll_work(struct work_struct *w) +{ + struct delayed_work *dw = container_of(w, struct delayed_work, work); + board_info_t *db = container_of(dw, board_info_t, phy_poll); + + mii_check_media(&db->mii, netif_msg_link(db), 0); + + if (netif_running(db->ndev)) + dm9000_schedule_poll(db); +} /* dm9000_release_board * @@ -367,8 +510,8 @@ dm9000_release_board(struct platform_device *pdev, struct board_info *db) kfree(db->data_req); } - if (db->addr_res != NULL) { - release_resource(db->addr_res); + if (db->addr_req != NULL) { + release_resource(db->addr_req); kfree(db->addr_req); } } @@ -378,12 +521,13 @@ dm9000_release_board(struct platform_device *pdev, struct board_info *db) /* * Search DM9000 board, allocate space and register it */ -static int +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; unsigned long base; int ret = 0; int iosize; @@ -393,28 +537,31 @@ dm9000_probe(struct platform_device *pdev) /* Init network device */ ndev = alloc_etherdev(sizeof (struct board_info)); if (!ndev) { - printk("%s: could not allocate device.\n", CARDNAME); + dev_err(&pdev->dev, "could not allocate device.\n"); return -ENOMEM; } - SET_MODULE_OWNER(ndev); SET_NETDEV_DEV(ndev, &pdev->dev); - PRINTK2("dm9000_probe()"); + 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); + if (pdev->num_resources < 2) { ret = -ENODEV; goto out; - } - - switch (pdev->num_resources) { - case 2: + } else if (pdev->num_resources == 2) { base = pdev->resource[0].start; if (!request_mem_region(base, 4, ndev->name)) { @@ -424,18 +571,20 @@ dm9000_probe(struct platform_device *pdev) ndev->base_addr = base; ndev->irq = pdev->resource[1].start; - db->io_addr = (void *)base; - db->io_data = (void *)(base + 4); + db->io_addr = (void __iomem *)base; + db->io_data = (void __iomem *)(base + 4); - break; + /* ensure at least we have a default set of IO routines */ + dm9000_set_io(db, 2); - case 3: + } 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) { - printk(KERN_ERR PFX "insufficient resources\n"); + if (db->addr_res == NULL || db->data_res == NULL || + db->irq_res == NULL) { + dev_err(db->dev, "insufficient resources\n"); ret = -ENOENT; goto out; } @@ -445,7 +594,7 @@ dm9000_probe(struct platform_device *pdev) pdev->name); if (db->addr_req == NULL) { - printk(KERN_ERR PFX "cannot claim address reg area\n"); + dev_err(db->dev, "cannot claim address reg area\n"); ret = -EIO; goto out; } @@ -453,7 +602,7 @@ dm9000_probe(struct platform_device *pdev) db->io_addr = ioremap(db->addr_res->start, i); if (db->io_addr == NULL) { - printk(KERN_ERR "failed to ioremap address reg\n"); + dev_err(db->dev, "failed to ioremap address reg\n"); ret = -EINVAL; goto out; } @@ -463,7 +612,7 @@ dm9000_probe(struct platform_device *pdev) pdev->name); if (db->data_req == NULL) { - printk(KERN_ERR PFX "cannot claim data reg area\n"); + dev_err(db->dev, "cannot claim data reg area\n"); ret = -EIO; goto out; } @@ -471,7 +620,7 @@ dm9000_probe(struct platform_device *pdev) db->io_data = ioremap(db->data_res->start, iosize); if (db->io_data == NULL) { - printk(KERN_ERR "failed to ioremap data reg\n"); + dev_err(db->dev,"failed to ioremap data reg\n"); ret = -EINVAL; goto out; } @@ -483,7 +632,6 @@ dm9000_probe(struct platform_device *pdev) /* 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 */ @@ -511,12 +659,14 @@ dm9000_probe(struct platform_device *pdev) if (pdata->dumpblk != NULL) db->dumpblk = pdata->dumpblk; + + db->flags = pdata->flags; } dm9000_reset(db); /* try two times, DM9000 sometimes gets the first read wrong */ - for (i = 0; i < 2; i++) { + 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; @@ -524,12 +674,13 @@ dm9000_probe(struct platform_device *pdev) if (id_val == DM9000_ID) break; - printk("%s: read wrong id 0x%08x\n", CARDNAME, id_val); + dev_err(db->dev, "read wrong id 0x%08x\n", id_val); } if (id_val != DM9000_ID) { - printk("%s: wrong id: 0x%08x\n", CARDNAME, id_val); - goto release; + dev_err(db->dev, "wrong id: 0x%08x\n", id_val); + ret = -ENODEV; + goto out; } /* from this point we assume that we have found a DM9000 */ @@ -542,12 +693,14 @@ dm9000_probe(struct platform_device *pdev) ndev->tx_timeout = &dm9000_timeout; ndev->watchdog_timeo = msecs_to_jiffies(watchdog); ndev->stop = &dm9000_stop; - ndev->get_stats = &dm9000_get_stats; ndev->set_multicast_list = &dm9000_hash_table; + ndev->ethtool_ops = &dm9000_ethtool_ops; + ndev->do_ioctl = &dm9000_ioctl; -#ifdef DM9000_PROGRAM_EEPROM - program_eeprom(db); +#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; @@ -557,36 +710,40 @@ dm9000_probe(struct platform_device *pdev) db->mii.mdio_read = dm9000_phy_read; db->mii.mdio_write = dm9000_phy_write; - /* Read SROM content */ - for (i = 0; i < 64; i++) - ((u16 *) db->srom)[i] = read_srom_word(db, i); + 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); - /* Set Node Address */ - for (i = 0; i < 6; i++) - ndev->dev_addr[i] = db->srom[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)) - printk("%s: Invalid ethernet MAC address. Please " - "set using ifconfig\n", ndev->name); + 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("%s: dm9000 at %p,%p IRQ %d MAC: ", - ndev->name, db->io_addr, db->io_data, ndev->irq); - for (i = 0; i < 5; i++) - printk("%02x:", ndev->dev_addr[i]); - printk("%02x\n", ndev->dev_addr[5]); + DECLARE_MAC_BUF(mac); + printk("%s: dm9000 at %p,%p IRQ %d MAC: %s (%s)\n", + ndev->name, db->io_addr, db->io_data, ndev->irq, + print_mac(mac, ndev->dev_addr), mac_src); } return 0; - release: - out: - printk("%s: not found (%d).\n", CARDNAME, ret); +out: + dev_err(db->dev, "not found (%d).\n", ret); dm9000_release_board(pdev, db); - kfree(ndev); + free_netdev(ndev); return ret; } @@ -599,10 +756,22 @@ static int dm9000_open(struct net_device *dev) { board_info_t *db = (board_info_t *) 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 */ - PRINTK2("entering dm9000_open\n"); + if (irqflags == IRQF_TRIGGER_NONE) { + dev_warn(db->dev, "WARNING: no IRQ resource flags set.\n"); + irqflags = DEFAULT_TRIGGER; + } + + irqflags |= IRQF_SHARED; - if (request_irq(dev->irq, &dm9000_interrupt, SA_SHIRQ, dev->name, dev)) + if (request_irq(dev->irq, &dm9000_interrupt, irqflags, dev->name, dev)) return -EAGAIN; /* Initialize DM9000 board */ @@ -612,15 +781,10 @@ dm9000_open(struct net_device *dev) /* Init driver variable */ db->dbug_cnt = 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); - mii_check_media(&db->mii, netif_msg_link(db), 1); netif_start_queue(dev); + + dm9000_schedule_poll(db); return 0; } @@ -633,7 +797,7 @@ dm9000_init_dm9000(struct net_device *dev) { board_info_t *db = (board_info_t *) dev->priv; - PRINTK1("entering %s\n",__FUNCTION__); + 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 */ @@ -643,6 +807,9 @@ dm9000_init_dm9000(struct net_device *dev) 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); + /* Program operating register */ iow(db, DM9000_TCR, 0); /* TX Polling clear */ iow(db, DM9000_BPTR, 0x3f); /* Less 3Kb, 200us */ @@ -655,8 +822,6 @@ 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); /* Enable TX/RX interrupt mask */ iow(db, DM9000_IMR, IMR_PAR | IMR_PTM | IMR_PRM); @@ -664,7 +829,6 @@ dm9000_init_dm9000(struct net_device *dev) db->tx_pkt_cnt = 0; db->queue_pkt_len = 0; dev->trans_start = 0; - spin_lock_init(&db->lock); } /* @@ -674,55 +838,44 @@ dm9000_init_dm9000(struct net_device *dev) 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; - PRINTK3("dm9000_start_xmit\n"); + dm9000_dbg(db, 3, "%s:\n", __func__); if (db->tx_pkt_cnt > 1) return 1; - netif_stop_queue(dev); - - /* Disable all interrupts */ - iow(db, DM9000_IMR, IMR_PAR); + spin_lock_irqsave(&db->lock, flags); /* Move data to DM9000 TX RAM */ writeb(DM9000_MWCMD, db->io_addr); (db->outblk)(db->io_data, skb->data, skb->len); - db->stats.tx_bytes += skb->len; + dev->stats.tx_bytes += skb->len; + db->tx_pkt_cnt++; /* TX control: First packet immediately send, second packet queue */ - if (db->tx_pkt_cnt == 0) { - - /* First Packet */ - db->tx_pkt_cnt++; - + 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); + iow(db, DM9000_TXPLL, skb->len); + iow(db, DM9000_TXPLH, skb->len >> 8); /* Issue TX polling command */ iow(db, DM9000_TCR, TCR_TXREQ); /* Cleared after TX complete */ dev->trans_start = jiffies; /* save the time stamp */ - } else { /* Second packet */ - db->tx_pkt_cnt++; db->queue_pkt_len = skb->len; + netif_stop_queue(dev); } + spin_unlock_irqrestore(&db->lock, flags); + /* free this SKB */ dev_kfree_skb(skb); - /* Re-enable resource check */ - if (db->tx_pkt_cnt == 1) - netif_wake_queue(dev); - - /* Re-enable interrupt */ - iow(db, DM9000_IMR, IMR_PAR | IMR_PTM | IMR_PRM); - return 0; } @@ -747,10 +900,10 @@ dm9000_stop(struct net_device *ndev) { board_info_t *db = (board_info_t *) ndev->priv; - PRINTK1("entering %s\n",__FUNCTION__); + if (netif_msg_ifdown(db)) + dev_dbg(db->dev, "shutting down %s\n", ndev->name); - /* deleted timer */ - del_timer(&db->timer); + cancel_delayed_work_sync(&db->phy_poll); netif_stop_queue(ndev); netif_carrier_off(ndev); @@ -768,7 +921,7 @@ dm9000_stop(struct net_device *ndev) * receive the packet to upper layer, free the transmitted packet */ -void +static void dm9000_tx_done(struct net_device *dev, board_info_t * db) { int tx_status = ior(db, DM9000_NSR); /* Got TX status */ @@ -776,12 +929,15 @@ dm9000_tx_done(struct net_device *dev, board_info_t * db) if (tx_status & (NSR_TX2END | NSR_TX1END)) { /* One packet sent complete */ db->tx_pkt_cnt--; - db->stats.tx_packets++; + 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_TXPLL, db->queue_pkt_len); + iow(db, DM9000_TXPLH, db->queue_pkt_len >> 8); iow(db, DM9000_TCR, TCR_TXREQ); dev->trans_start = jiffies; } @@ -790,22 +946,17 @@ dm9000_tx_done(struct net_device *dev, board_info_t * db) } static irqreturn_t -dm9000_interrupt(int irq, void *dev_id, struct pt_regs *regs) +dm9000_interrupt(int irq, void *dev_id) { struct net_device *dev = dev_id; - board_info_t *db; + board_info_t *db = (board_info_t *) dev->priv; int int_status; u8 reg_save; - PRINTK3("entering %s\n",__FUNCTION__); - - if (!dev) { - PRINTK1("dm9000_interrupt() without DEVICE arg\n"); - return IRQ_HANDLED; - } + dm9000_dbg(db, 3, "entering %s\n", __func__); /* A real interrupt coming */ - db = (board_info_t *) dev->priv; + spin_lock(&db->lock); /* Save previous register address */ @@ -818,6 +969,9 @@ dm9000_interrupt(int irq, void *dev_id, struct pt_regs *regs) 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); @@ -837,39 +991,10 @@ dm9000_interrupt(int irq, void *dev_id, struct pt_regs *regs) return IRQ_HANDLED; } -/* - * Get statistics from driver. - */ -static struct net_device_stats * -dm9000_get_stats(struct net_device *dev) -{ - board_info_t *db = (board_info_t *) dev->priv; - return &db->stats; -} - - -/* - * 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; - - PRINTK3("dm9000_timer()\n"); - - 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 { - u16 RxStatus; - u16 RxLen; + u8 RxPktReady; + u8 RxStatus; + __le16 RxLen; } __attribute__((__packed__)); /* @@ -882,7 +1007,7 @@ dm9000_rx(struct net_device *dev) struct dm9000_rxhdr rxhdr; struct sk_buff *skb; u8 rxbyte, *rdptr; - int GoodPacket; + bool GoodPacket; int RxLen; /* Check packet ready or not */ @@ -894,7 +1019,7 @@ dm9000_rx(struct net_device *dev) /* Status check: this byte must be 0 or 1 */ if (rxbyte > DM9000_PKT_RDY) { - printk("status check failed: %d\n", rxbyte); + 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; @@ -904,55 +1029,62 @@ dm9000_rx(struct net_device *dev) return; /* A packet ready now & Get status/length */ - GoodPacket = TRUE; + GoodPacket = true; writeb(DM9000_MRCMD, db->io_addr); (db->inblk)(db->io_data, &rxhdr, sizeof(rxhdr)); - RxLen = rxhdr.RxLen; + 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; - PRINTK1("Bad Packet received (runt)\n"); + GoodPacket = false; + if (netif_msg_rx_err(db)) + dev_dbg(db->dev, "RX: Bad Packet (runt)\n"); } if (RxLen > DM9000_PKT_MAX) { - PRINTK1("RST: RX Len:%x\n", RxLen); + dev_dbg(db->dev, "RST: RX Len:%x\n", RxLen); } - if (rxhdr.RxStatus & 0xbf00) { - GoodPacket = FALSE; - if (rxhdr.RxStatus & 0x100) { - PRINTK1("fifo error\n"); - db->stats.rx_fifo_errors++; + if (rxhdr.RxStatus & 0xbf) { + GoodPacket = false; + if (rxhdr.RxStatus & 0x01) { + if (netif_msg_rx_err(db)) + dev_dbg(db->dev, "fifo error\n"); + dev->stats.rx_fifo_errors++; } - if (rxhdr.RxStatus & 0x200) { - PRINTK1("crc error\n"); - db->stats.rx_crc_errors++; + if (rxhdr.RxStatus & 0x02) { + if (netif_msg_rx_err(db)) + dev_dbg(db->dev, "crc error\n"); + dev->stats.rx_crc_errors++; } - if (rxhdr.RxStatus & 0x8000) { - PRINTK1("length error\n"); - db->stats.rx_length_errors++; + if (rxhdr.RxStatus & 0x80) { + 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)) { - skb->dev = dev; skb_reserve(skb, 2); rdptr = (u8 *) skb_put(skb, RxLen - 4); /* Read received packet from RX SRAM */ (db->inblk)(db->io_data, rdptr, RxLen); - db->stats.rx_bytes += RxLen; + dev->stats.rx_bytes += RxLen; /* Pass to upper layer */ skb->protocol = eth_type_trans(skb, dev); netif_rx(skb); - db->stats.rx_packets++; + dev->stats.rx_packets++; } else { /* need to dump the packet's data */ @@ -962,72 +1094,119 @@ dm9000_rx(struct net_device *dev) } while (rxbyte == DM9000_PKT_RDY); } -/* - * Read a word data from SROM - */ -static u16 -read_srom_word(board_info_t * db, int offset) +static unsigned int +dm9000_read_locked(board_info_t *db, int reg) { - 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)); + unsigned long flags; + unsigned int ret; + + spin_lock_irqsave(&db->lock, flags); + ret = ior(db, reg); + spin_unlock_irqrestore(&db->lock, flags); + + return ret; +} + +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 DM9000_PROGRAM_EEPROM /* - * Write a word data to SROM + * Read a word data from EEPROM */ static void -write_srom_word(board_info_t * db, int offset, u16 val) +dm9000_read_eeprom(board_info_t *db, int offset, u8 *to) { + 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_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); + 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); } /* - * Only for development: - * Here we write static data to the eeprom in case - * we don't have valid content on a new board + * Write a word data to SROM */ static void -program_eeprom(board_info_t * db) +dm9000_write_eeprom(board_info_t *db, int offset, u8 *data) { - 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 + unsigned long flags; + if (db->flags & DM9000_PLATF_NO_EEPROM) + return; -/* - * 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) - */ + mutex_lock(&db->addr_lock); -static unsigned long -cal_CRC(unsigned char *Data, unsigned int Len, u8 flag) -{ + 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); - u32 crc = ether_crc_le(Len, Data); + dm9000_wait_eeprom(db); - if (flag) - return ~crc; + 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); - return crc; + mutex_unlock(&db->addr_lock); } /* @@ -1039,15 +1218,17 @@ dm9000_hash_table(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 i, oft, hash_table[4]; + u16 hash_table[4]; + u8 rcr = RCR_DIS_LONG | RCR_DIS_CRC | RCR_RXEN; unsigned long flags; - PRINTK2("dm9000_hash_table()\n"); + dm9000_dbg(db, 1, "entering %s\n", __func__); - spin_lock_irqsave(&db->lock,flags); + spin_lock_irqsave(&db->lock, flags); - for (i = 0, oft = 0x10; i < 6; i++, oft++) + for (i = 0, oft = DM9000_PAR; i < 6; i++, oft++) iow(db, oft, dev->dev_addr[i]); /* Clear Hash Table */ @@ -1057,23 +1238,42 @@ dm9000_hash_table(struct net_device *dev) /* 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 = cal_CRC((char *) mcptr->dmi_addr, 6, 0) & 0x3f; + 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 = 0x16; i < 4; i++) { - iow(db, oft++, hash_table[i] & 0xff); - iow(db, oft++, (hash_table[i] >> 8) & 0xff); + for (i = 0, oft = DM9000_MAR; i < 4; i++) { + iow(db, oft++, hash_table[i]); + iow(db, oft++, hash_table[i] >> 8); } - spin_unlock_irqrestore(&db->lock,flags); + iow(db, DM9000_RCR, rcr); + spin_unlock_irqrestore(&db->lock, flags); } /* + * 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 */ static int @@ -1084,6 +1284,8 @@ dm9000_phy_read(struct net_device *dev, int phy_reg_unused, int reg) unsigned int reg_save; int ret; + mutex_lock(&db->addr_lock); + spin_lock_irqsave(&db->lock,flags); /* Save previous register address */ @@ -1093,7 +1295,15 @@ dm9000_phy_read(struct net_device *dev, int phy_reg_unused, int reg) iow(db, DM9000_EPAR, DM9000_PHY | reg); iow(db, DM9000_EPCR, 0xc); /* Issue phyxcer read command */ - udelay(100); /* Wait read complete */ + + 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 */ @@ -1101,9 +1311,11 @@ 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; } @@ -1117,6 +1329,9 @@ dm9000_phy_write(struct net_device *dev, int phyaddr_unused, int reg, int value) 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 */ @@ -1126,25 +1341,38 @@ 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, 0xa); /* Issue phyxcer write command */ - udelay(500); /* Wait write complete */ + + 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, 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 int dm9000_drv_suspend(struct platform_device *dev, pm_message_t state) { struct net_device *ndev = platform_get_drvdata(dev); + board_info_t *db; if (ndev) { + db = (board_info_t *) ndev->priv; + db->in_suspend = 1; + if (netif_running(ndev)) { netif_device_detach(ndev); dm9000_shutdown(ndev); @@ -1167,11 +1395,13 @@ dm9000_drv_resume(struct platform_device *dev) netif_device_attach(ndev); } + + db->in_suspend = 0; } return 0; } -static int +static int __devexit dm9000_drv_remove(struct platform_device *pdev) { struct net_device *ndev = platform_get_drvdata(pdev); @@ -1180,27 +1410,27 @@ dm9000_drv_remove(struct platform_device *pdev) unregister_netdev(ndev); dm9000_release_board(pdev, (board_info_t *) ndev->priv); - kfree(ndev); /* free device structure */ - - PRINTK1("clean_module() exit\n"); + free_netdev(ndev); /* free device structure */ + dev_dbg(&pdev->dev, "released and freed device\n"); return 0; } static struct platform_driver dm9000_driver = { + .driver = { + .name = "dm9000", + .owner = THIS_MODULE, + }, .probe = dm9000_probe, - .remove = dm9000_drv_remove, + .remove = __devexit_p(dm9000_drv_remove), .suspend = dm9000_drv_suspend, .resume = dm9000_drv_resume, - .driver = { - .name = "dm9000", - }, }; 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 */ } @@ -1217,3 +1447,4 @@ module_exit(dm9000_cleanup); MODULE_AUTHOR("Sascha Hauer, Ben Dooks"); MODULE_DESCRIPTION("Davicom DM9000 network driver"); MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:dm9000");