From: Jeff Kirsher Date: Sat, 25 Jun 2011 10:18:24 +0000 (-0700) Subject: dm9000: Move the Davicom driver X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=d7058a79c56abf58bb33a5c2eee2f7cde6f5ec36;p=openwrt%2Fstaging%2Fblogic.git dm9000: Move the Davicom driver Move the Davicom driver into drivers/net/ethernet/davicom/ and make the necessary Kconfig and Makefile changes. CC: Ben Dooks CC: Sascha Hauer Signed-off-by: Jeff Kirsher Acked-by: Sascha Hauer --- diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index e83f559a2c46..23155cc4a48f 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -246,34 +246,6 @@ config NET_NETX To compile this driver as a module, choose M here. The module will be called netx-eth. -config DM9000 - tristate "DM9000 support" - depends on ARM || BLACKFIN || MIPS - select CRC32 - select MII - ---help--- - Support for DM9000 chipset. - - To compile this driver as a module, choose M here. The module - will be called dm9000. - -config DM9000_DEBUGLEVEL - int "DM9000 maximum debug level" - depends on DM9000 - default 4 - help - The maximum level of debugging code compiled into the DM9000 - driver. - -config DM9000_FORCE_SIMPLE_PHY_POLL - bool "Force simple NSR based PHY polling" - depends on DM9000 - ---help--- - This configuration forces the DM9000 to use the NSR's LinkStatus - bit to determine if the link is up or down instead of the more - costly MII PHY reads. Note, this will not work if the chip is - operating with an external PHY. - config NET_PCI bool "EISA, VLB, PCI and on board controllers" depends on ISA || EISA || PCI diff --git a/drivers/net/Makefile b/drivers/net/Makefile index 08ee56fc607e..298587f65c2b 100644 --- a/drivers/net/Makefile +++ b/drivers/net/Makefile @@ -52,7 +52,6 @@ obj-$(CONFIG_EQUALIZER) += eql.o obj-$(CONFIG_TUN) += tun.o obj-$(CONFIG_VETH) += veth.o obj-$(CONFIG_NET_NETX) += netx-eth.o -obj-$(CONFIG_DM9000) += dm9000.o obj-$(CONFIG_DEV_APPLETALK) += appletalk/ obj-$(CONFIG_ETHERNET) += ethernet/ diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c deleted file mode 100644 index 8ef31dc4704d..000000000000 --- a/drivers/net/dm9000.c +++ /dev/null @@ -1,1705 +0,0 @@ -/* - * Davicom DM9000 Fast Ethernet driver for Linux. - * Copyright (C) 1997 Sten Wang - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * 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. - * - * Additional updates, Copyright: - * Ben Dooks - * Sascha Hauer - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -#include "dm9000.h" - -/* Board/System/Debug information/definition ---------------- */ - -#define DM9000_PHY 0x40 /* PHY address 0x01 */ - -#define CARDNAME "dm9000" -#define DRV_VERSION "1.31" - -/* - * Transmit timeout, default 5 seconds. - */ -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 */ - - 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; - - 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); - 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; - - 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 wake_state; - - int ip_summed; -} 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 netdev_priv(dev); -} - -/* DM9000 network board routine ---------------------------- */ - -static void -dm9000_reset(board_info_t * db) -{ - dev_dbg(db->dev, "resetting device\n"); - - /* RESET device */ - writeb(DM9000_NCR, db->io_addr); - udelay(200); - writeb(NCR_RST, db->io_data); - udelay(200); -} - -/* - * Read a byte from I/O port - */ -static u8 -ior(board_info_t * db, int reg) -{ - writeb(reg, db->io_addr); - return readb(db->io_data); -} - -/* - * Write a byte to I/O port - */ - -static void -iow(board_info_t * db, int reg, int value) -{ - writeb(reg, db->io_addr); - writeb(value, db->io_data); -} - -/* routines for sending block to chip */ - -static void dm9000_outblk_8bit(void __iomem *reg, void *data, int count) -{ - writesb(reg, data, count); -} - -static void dm9000_outblk_16bit(void __iomem *reg, void *data, int count) -{ - writesw(reg, data, (count+1) >> 1); -} - -static void dm9000_outblk_32bit(void __iomem *reg, void *data, int count) -{ - writesl(reg, data, (count+3) >> 2); -} - -/* input block from chip to memory */ - -static void dm9000_inblk_8bit(void __iomem *reg, void *data, int count) -{ - readsb(reg, data, count); -} - - -static void dm9000_inblk_16bit(void __iomem *reg, void *data, int count) -{ - readsw(reg, data, (count+1) >> 1); -} - -static void dm9000_inblk_32bit(void __iomem *reg, void *data, int count) -{ - readsl(reg, data, (count+3) >> 2); -} - -/* dump block from chip to null */ - -static void dm9000_dumpblk_8bit(void __iomem *reg, int count) -{ - int i; - int tmp; - - for (i = 0; i < count; i++) - tmp = readb(reg); -} - -static void dm9000_dumpblk_16bit(void __iomem *reg, int count) -{ - int i; - int tmp; - - count = (count + 1) >> 1; - - for (i = 0; i < count; i++) - tmp = readw(reg); -} - -static void dm9000_dumpblk_32bit(void __iomem *reg, int count) -{ - int i; - int tmp; - - count = (count + 3) >> 2; - - for (i = 0; i < count; i++) - tmp = readl(reg); -} - -/* dm9000_set_io - * - * select the specified set of io routines to use with the - * device - */ - -static void dm9000_set_io(struct board_info *db, int byte_width) -{ - /* use the size of the data resource to work out what IO - * routines we want to use - */ - - switch (byte_width) { - case 1: - db->dumpblk = dm9000_dumpblk_8bit; - db->outblk = dm9000_outblk_8bit; - db->inblk = dm9000_inblk_8bit; - break; - - - case 3: - 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; - break; - - case 4: - default: - db->dumpblk = dm9000_dumpblk_32bit; - db->outblk = dm9000_outblk_32bit; - db->inblk = dm9000_inblk_32bit; - break; - } -} - -static void dm9000_schedule_poll(board_info_t *db) -{ - if (db->type == TYPE_DM9000E) - schedule_delayed_work(&db->phy_poll, HZ * 2); -} - -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) -{ - 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; - - msleep(1); - - if (timeout-- < 0) { - dev_dbg(db->dev, "timeout waiting EEPROM\n"); - break; - } - } - - return 0; -} - -/* - * Read a word data from EEPROM - */ -static void -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_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); -} - -/* - * Write a word data to SROM - */ -static void -dm9000_write_eeprom(board_info_t *db, int offset, u8 *data) -{ - 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); -} - -/* 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 int dm9000_set_features(struct net_device *dev, u32 features) -{ - board_info_t *dm = to_dm9000_board(dev); - u32 changed = dev->features ^ features; - unsigned long flags; - - if (!(changed & NETIF_F_RXCSUM)) - return 0; - - spin_lock_irqsave(&dm->lock, flags); - iow(dm, DM9000_RCSR, (features & NETIF_F_RXCSUM) ? RCSR_CSUM : 0); - spin_unlock_irqrestore(&dm->lock, flags); - - return 0; -} - -static u32 dm9000_get_link(struct net_device *dev) -{ - board_info_t *dm = to_dm9000_board(dev); - u32 ret; - - 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; - - return ret; -} - -#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 done; - - /* EEPROM access is aligned to two bytes */ - - if (dm->flags & DM9000_PLATF_NO_EEPROM) - return -ENOENT; - - if (ee->magic != DM_EEPROM_MAGIC) - return -EINVAL; - - while (len > 0) { - if (len & 1 || offset & 1) { - int which = offset & 1; - u8 tmp[2]; - - dm9000_read_eeprom(dm, offset / 2, tmp); - tmp[which] = *data; - dm9000_write_eeprom(dm, offset / 2, tmp); - - done = 1; - } else { - dm9000_write_eeprom(dm, offset / 2, data); - done = 2; - } - - data += done; - offset += done; - len -= done; - } - - return 0; -} - -static void dm9000_get_wol(struct net_device *dev, struct ethtool_wolinfo *w) -{ - board_info_t *dm = to_dm9000_board(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) - irq_set_irq_wake(dm->irq_wake, 1); - else if (dm->wake_state & !opts) - irq_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, -}; - -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_unlocked(struct net_device *dev) -{ - board_info_t *db = netdev_priv(dev); - struct netdev_hw_addr *ha; - int i, oft; - u32 hash_val; - u16 hash_table[4]; - u8 rcr = RCR_DIS_LONG | RCR_DIS_CRC | RCR_RXEN; - - dm9000_dbg(db, 1, "entering %s\n", __func__); - - 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 */ - netdev_for_each_mc_addr(ha, dev) { - hash_val = ether_crc_le(6, ha->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); -} - -static void -dm9000_hash_table(struct net_device *dev) -{ - board_info_t *db = netdev_priv(dev); - unsigned long flags; - - spin_lock_irqsave(&db->lock, flags); - dm9000_hash_table_unlocked(dev); - spin_unlock_irqrestore(&db->lock, flags); -} - -/* - * Initialize dm9000 board - */ -static void -dm9000_init_dm9000(struct net_device *dev) -{ - 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 */ - if (dev->hw_features & NETIF_F_RXCSUM) - iow(db, DM9000_RCSR, - (dev->features & NETIF_F_RXCSUM) ? RCSR_CSUM : 0); - - iow(db, DM9000_GPCR, GPCR_GEP_CNTL); /* Let GPIO0 output */ - - 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 */ - iow(db, DM9000_BPTR, 0x3f); /* Less 3Kb, 200us */ - iow(db, DM9000_FCR, 0xff); /* Flow Control */ - iow(db, DM9000_SMCR, 0); /* Special Mode */ - /* clear TX status */ - iow(db, DM9000_NSR, NSR_WAKEST | NSR_TX2END | NSR_TX1END); - iow(db, DM9000_ISR, ISR_CLR_STATUS); /* Clear interrupt status */ - - /* Set address filter table */ - dm9000_hash_table_unlocked(dev); - - 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); - - /* Init Driver variable */ - db->tx_pkt_cnt = 0; - db->queue_pkt_len = 0; - dev->trans_start = jiffies; -} - -/* 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 */ - spin_lock_irqsave(&db->lock, flags); - reg_save = readb(db->io_addr); - - netif_stop_queue(dev); - dm9000_reset(db); - dm9000_init_dm9000(dev); - /* We can accept TX packets again */ - dev->trans_start = jiffies; /* prevent tx timeout */ - 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. - */ -static int -dm9000_start_xmit(struct sk_buff *skb, struct net_device *dev) -{ - unsigned long flags; - board_info_t *db = netdev_priv(dev); - - dm9000_dbg(db, 3, "%s:\n", __func__); - - if (db->tx_pkt_cnt > 1) - return NETDEV_TX_BUSY; - - 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); - dev->stats.tx_bytes += skb->len; - - db->tx_pkt_cnt++; - /* TX control: First packet immediately send, second packet queue */ - if (db->tx_pkt_cnt == 1) { - 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); - } - - spin_unlock_irqrestore(&db->lock, flags); - - /* free this SKB */ - dev_kfree_skb(skb); - - return NETDEV_TX_OK; -} - -/* - * 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) -{ - int tx_status = ior(db, DM9000_NSR); /* Got TX status */ - - if (tx_status & (NSR_TX2END | NSR_TX1END)) { - /* One packet sent complete */ - 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) - dm9000_send_packet(dev, db->queue_ip_summed, - db->queue_pkt_len); - netif_wake_queue(dev); - } -} - -struct dm9000_rxhdr { - u8 RxPktReady; - u8 RxStatus; - __le16 RxLen; -} __packed; - -/* - * Received a packet and pass to upper layer - */ -static void -dm9000_rx(struct net_device *dev) -{ - board_info_t *db = netdev_priv(dev); - struct dm9000_rxhdr rxhdr; - struct sk_buff *skb; - u8 rxbyte, *rdptr; - bool GoodPacket; - int RxLen; - - /* Check packet ready or not */ - do { - ior(db, DM9000_MRCMDX); /* Dummy read */ - - /* Get most updated data */ - rxbyte = readb(db->io_data); - - /* Status check: this byte must be 0 or 1 */ - 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)) - return; - - /* A packet ready now & Get status/length */ - GoodPacket = true; - writeb(DM9000_MRCMD, db->io_addr); - - (db->inblk)(db->io_data, &rxhdr, sizeof(rxhdr)); - - 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; - 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); - } - - /* 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 & RSR_FOE) { - if (netif_msg_rx_err(db)) - dev_dbg(db->dev, "fifo error\n"); - dev->stats.rx_fifo_errors++; - } - 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 & 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)) { - skb_reserve(skb, 2); - rdptr = (u8 *) skb_put(skb, RxLen - 4); - - /* Read received packet from RX SRAM */ - - (db->inblk)(db->io_data, rdptr, RxLen); - dev->stats.rx_bytes += RxLen; - - /* Pass to upper layer */ - skb->protocol = eth_type_trans(skb, dev); - if (dev->features & NETIF_F_RXCSUM) { - if ((((rxbyte & 0x1c) << 3) & rxbyte) == 0) - skb->ip_summed = CHECKSUM_UNNECESSARY; - else - skb_checksum_none_assert(skb); - } - netif_rx(skb); - dev->stats.rx_packets++; - - } else { - /* need to dump the packet's data */ - - (db->dumpblk)(db->io_data, RxLen); - } - } while (rxbyte & DM9000_PKT_RDY); -} - -static irqreturn_t dm9000_interrupt(int irq, void *dev_id) -{ - struct net_device *dev = dev_id; - board_info_t *db = netdev_priv(dev); - int int_status; - unsigned long flags; - u8 reg_save; - - dm9000_dbg(db, 3, "entering %s\n", __func__); - - /* A real interrupt coming */ - - /* holders of db->lock must always block IRQs */ - spin_lock_irqsave(&db->lock, flags); - - /* 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_irqrestore(&db->lock, flags); - - return IRQ_HANDLED; -} - -static irqreturn_t dm9000_wol_interrupt(int irq, void *dev_id) -{ - struct net_device *dev = dev_id; - board_info_t *db = netdev_priv(dev); - unsigned long flags; - unsigned nsr, wcr; - - spin_lock_irqsave(&db->lock, flags); - - nsr = ior(db, DM9000_NSR); - wcr = ior(db, DM9000_WCR); - - dev_dbg(db->dev, "%s: NSR=0x%02x, WCR=0x%02x\n", __func__, nsr, wcr); - - if (nsr & NSR_WAKEST) { - /* clear, so we can avoid */ - iow(db, DM9000_NSR, NSR_WAKEST); - - 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); - - } - - 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; - - /* GPIO0 on pre-activate PHY, Reg 1F is not set by reset */ - iow(db, DM9000_GPR, 0); /* REG_1F bit0 activate phyxcer */ - mdelay(1); /* delay needs by DM9000B */ - - /* Initialize DM9000 board */ - dm9000_reset(db); - dm9000_init_dm9000(dev); - - if (request_irq(dev->irq, dm9000_interrupt, irqflags, dev->name, dev)) - return -EAGAIN; - - /* 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 - */ -static int -dm9000_phy_read(struct net_device *dev, int phy_reg_unused, int reg) -{ - 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 */ - reg_save = readb(db->io_addr); - - /* Fill the phyxcer register into REG_0C */ - iow(db, DM9000_EPAR, DM9000_PHY | reg); - - 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 */ - ret = (ior(db, DM9000_EPDRH) << 8) | ior(db, DM9000_EPDRL); - - /* 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; -} - -/* - * Write a word to phyxcer - */ -static void -dm9000_phy_write(struct net_device *dev, - int phyaddr_unused, int reg, int value) -{ - 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 */ - reg_save = readb(db->io_addr); - - /* Fill the phyxcer register into REG_0C */ - iow(db, DM9000_EPAR, DM9000_PHY | reg); - - /* Fill the written data into REG_0D & REG_0E */ - 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, 0x0); /* Clear phyxcer write command */ - - /* restore the previous address */ - writeb(reg_save, db->io_addr); - - 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_stop(struct net_device *ndev) -{ - board_info_t *db = netdev_priv(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_set_features = dm9000_set_features, - .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 = irq_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 { - irq_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) { - ndev->hw_features = NETIF_F_RXCSUM | NETIF_F_IP_CSUM; - ndev->features |= ndev->hw_features; - } - - /* 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); - - random_ether_addr(ndev->dev_addr); - mac_src = "random"; - } - - - 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_suspend(struct device *dev) -{ - 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)) { - /* 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 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); - - platform_set_drvdata(pdev, NULL); - - unregister_netdev(ndev); - dm9000_release_board(pdev, netdev_priv(ndev)); - 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, - .pm = &dm9000_drv_pm_ops, - }, - .probe = dm9000_probe, - .remove = __devexit_p(dm9000_drv_remove), -}; - -static int __init -dm9000_init(void) -{ - printk(KERN_INFO "%s Ethernet Driver, V%s\n", CARDNAME, DRV_VERSION); - - return platform_driver_register(&dm9000_driver); -} - -static void __exit -dm9000_cleanup(void) -{ - platform_driver_unregister(&dm9000_driver); -} - -module_init(dm9000_init); -module_exit(dm9000_cleanup); - -MODULE_AUTHOR("Sascha Hauer, Ben Dooks"); -MODULE_DESCRIPTION("Davicom DM9000 network driver"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:dm9000"); diff --git a/drivers/net/dm9000.h b/drivers/net/dm9000.h deleted file mode 100644 index 55688bd1a3ef..000000000000 --- a/drivers/net/dm9000.h +++ /dev/null @@ -1,171 +0,0 @@ -/* - * dm9000 Ethernet - */ - -#ifndef _DM9000X_H_ -#define _DM9000X_H_ - -#define DM9000_ID 0x90000A46 - -/* although the registers are 16 bit, they are 32-bit aligned. - */ - -#define DM9000_NCR 0x00 -#define DM9000_NSR 0x01 -#define DM9000_TCR 0x02 -#define DM9000_TSR1 0x03 -#define DM9000_TSR2 0x04 -#define DM9000_RCR 0x05 -#define DM9000_RSR 0x06 -#define DM9000_ROCR 0x07 -#define DM9000_BPTR 0x08 -#define DM9000_FCTR 0x09 -#define DM9000_FCR 0x0A -#define DM9000_EPCR 0x0B -#define DM9000_EPAR 0x0C -#define DM9000_EPDRL 0x0D -#define DM9000_EPDRH 0x0E -#define DM9000_WCR 0x0F - -#define DM9000_PAR 0x10 -#define DM9000_MAR 0x16 - -#define DM9000_GPCR 0x1e -#define DM9000_GPR 0x1f -#define DM9000_TRPAL 0x22 -#define DM9000_TRPAH 0x23 -#define DM9000_RWPAL 0x24 -#define DM9000_RWPAH 0x25 - -#define DM9000_VIDL 0x28 -#define DM9000_VIDH 0x29 -#define DM9000_PIDL 0x2A -#define DM9000_PIDH 0x2B - -#define DM9000_CHIPR 0x2C -#define DM9000_SMCR 0x2F - -#define DM9000_ETXCSR 0x30 -#define DM9000_TCCR 0x31 -#define DM9000_RCSR 0x32 - -#define CHIPR_DM9000A 0x19 -#define CHIPR_DM9000B 0x1A - -#define DM9000_MRCMDX 0xF0 -#define DM9000_MRCMD 0xF2 -#define DM9000_MRRL 0xF4 -#define DM9000_MRRH 0xF5 -#define DM9000_MWCMDX 0xF6 -#define DM9000_MWCMD 0xF8 -#define DM9000_MWRL 0xFA -#define DM9000_MWRH 0xFB -#define DM9000_TXPLL 0xFC -#define DM9000_TXPLH 0xFD -#define DM9000_ISR 0xFE -#define DM9000_IMR 0xFF - -#define NCR_EXT_PHY (1<<7) -#define NCR_WAKEEN (1<<6) -#define NCR_FCOL (1<<4) -#define NCR_FDX (1<<3) -#define NCR_LBK (3<<1) -#define NCR_RST (1<<0) - -#define NSR_SPEED (1<<7) -#define NSR_LINKST (1<<6) -#define NSR_WAKEST (1<<5) -#define NSR_TX2END (1<<3) -#define NSR_TX1END (1<<2) -#define NSR_RXOV (1<<1) - -#define TCR_TJDIS (1<<6) -#define TCR_EXCECM (1<<5) -#define TCR_PAD_DIS2 (1<<4) -#define TCR_CRC_DIS2 (1<<3) -#define TCR_PAD_DIS1 (1<<2) -#define TCR_CRC_DIS1 (1<<1) -#define TCR_TXREQ (1<<0) - -#define TSR_TJTO (1<<7) -#define TSR_LC (1<<6) -#define TSR_NC (1<<5) -#define TSR_LCOL (1<<4) -#define TSR_COL (1<<3) -#define TSR_EC (1<<2) - -#define RCR_WTDIS (1<<6) -#define RCR_DIS_LONG (1<<5) -#define RCR_DIS_CRC (1<<4) -#define RCR_ALL (1<<3) -#define RCR_RUNT (1<<2) -#define RCR_PRMSC (1<<1) -#define RCR_RXEN (1<<0) - -#define RSR_RF (1<<7) -#define RSR_MF (1<<6) -#define RSR_LCS (1<<5) -#define RSR_RWTO (1<<4) -#define RSR_PLE (1<<3) -#define RSR_AE (1<<2) -#define RSR_CE (1<<1) -#define RSR_FOE (1<<0) - -#define WCR_LINKEN (1 << 5) -#define WCR_SAMPLEEN (1 << 4) -#define WCR_MAGICEN (1 << 3) -#define WCR_LINKST (1 << 2) -#define WCR_SAMPLEST (1 << 1) -#define WCR_MAGICST (1 << 0) - -#define FCTR_HWOT(ot) (( ot & 0xf ) << 4 ) -#define FCTR_LWOT(ot) ( ot & 0xf ) - -#define IMR_PAR (1<<7) -#define IMR_ROOM (1<<3) -#define IMR_ROM (1<<2) -#define IMR_PTM (1<<1) -#define IMR_PRM (1<<0) - -#define ISR_ROOS (1<<3) -#define ISR_ROS (1<<2) -#define ISR_PTS (1<<1) -#define ISR_PRS (1<<0) -#define ISR_CLR_STATUS (ISR_ROOS | ISR_ROS | ISR_PTS | ISR_PRS) - -#define EPCR_REEP (1<<5) -#define EPCR_WEP (1<<4) -#define EPCR_EPOS (1<<3) -#define EPCR_ERPRR (1<<2) -#define EPCR_ERPRW (1<<1) -#define EPCR_ERRE (1<<0) - -#define GPCR_GEP_CNTL (1<<0) - -#define TCCR_IP (1<<0) -#define TCCR_TCP (1<<1) -#define TCCR_UDP (1<<2) - -#define RCSR_UDP_BAD (1<<7) -#define RCSR_TCP_BAD (1<<6) -#define RCSR_IP_BAD (1<<5) -#define RCSR_UDP (1<<4) -#define RCSR_TCP (1<<3) -#define RCSR_IP (1<<2) -#define RCSR_CSUM (1<<1) -#define RCSR_DISCARD (1<<0) - -#define DM9000_PKT_RDY 0x01 /* Packet ready to receive */ -#define DM9000_PKT_ERR 0x02 -#define DM9000_PKT_MAX 1536 /* Received packet max size */ - -/* DM9000A / DM9000B definitions */ - -#define IMR_LNKCHNG (1<<5) -#define IMR_UNDERRUN (1<<4) - -#define ISR_LNKCHNG (1<<5) -#define ISR_UNDERRUN (1<<4) - -#endif /* _DM9000X_H_ */ - diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig index 0cec25cbf36b..45eef598cbb1 100644 --- a/drivers/net/ethernet/Kconfig +++ b/drivers/net/ethernet/Kconfig @@ -24,6 +24,7 @@ source "drivers/net/ethernet/brocade/Kconfig" source "drivers/net/ethernet/chelsio/Kconfig" source "drivers/net/ethernet/cirrus/Kconfig" source "drivers/net/ethernet/cisco/Kconfig" +source "drivers/net/ethernet/davicom/Kconfig" config DNET tristate "Dave ethernet support (DNET)" diff --git a/drivers/net/ethernet/Makefile b/drivers/net/ethernet/Makefile index ebe8aee3f839..dfd51467ea65 100644 --- a/drivers/net/ethernet/Makefile +++ b/drivers/net/ethernet/Makefile @@ -16,6 +16,7 @@ obj-$(CONFIG_NET_VENDOR_BROCADE) += brocade/ obj-$(CONFIG_NET_VENDOR_CHELSIO) += chelsio/ obj-$(CONFIG_NET_VENDOR_CIRRUS) += cirrus/ obj-$(CONFIG_NET_VENDOR_CISCO) += cisco/ +obj-$(CONFIG_DM9000) += davicom/ obj-$(CONFIG_DNET) += dnet.o obj-$(CONFIG_NET_VENDOR_DEC) += dec/ obj-$(CONFIG_NET_VENDOR_DLINK) += dlink/ diff --git a/drivers/net/ethernet/davicom/Kconfig b/drivers/net/ethernet/davicom/Kconfig new file mode 100644 index 000000000000..1809d25d6eda --- /dev/null +++ b/drivers/net/ethernet/davicom/Kconfig @@ -0,0 +1,31 @@ +# +# Davicom device configuration +# + +config DM9000 + tristate "DM9000 support" + depends on ARM || BLACKFIN || MIPS + select CRC32 + select MII + ---help--- + Support for DM9000 chipset. + + To compile this driver as a module, choose M here. The module + will be called dm9000. + +config DM9000_DEBUGLEVEL + int "DM9000 maximum debug level" + depends on DM9000 + default 4 + ---help--- + The maximum level of debugging code compiled into the DM9000 + driver. + +config DM9000_FORCE_SIMPLE_PHY_POLL + bool "Force simple NSR based PHY polling" + depends on DM9000 + ---help--- + This configuration forces the DM9000 to use the NSR's LinkStatus + bit to determine if the link is up or down instead of the more + costly MII PHY reads. Note, this will not work if the chip is + operating with an external PHY. diff --git a/drivers/net/ethernet/davicom/Makefile b/drivers/net/ethernet/davicom/Makefile new file mode 100644 index 000000000000..74b31f0ebe18 --- /dev/null +++ b/drivers/net/ethernet/davicom/Makefile @@ -0,0 +1,5 @@ +# +# Makefile for the Davicom device drivers. +# + +obj-$(CONFIG_DM9000) += dm9000.o diff --git a/drivers/net/ethernet/davicom/dm9000.c b/drivers/net/ethernet/davicom/dm9000.c new file mode 100644 index 000000000000..8ef31dc4704d --- /dev/null +++ b/drivers/net/ethernet/davicom/dm9000.c @@ -0,0 +1,1705 @@ +/* + * Davicom DM9000 Fast Ethernet driver for Linux. + * Copyright (C) 1997 Sten Wang + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * 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. + * + * Additional updates, Copyright: + * Ben Dooks + * Sascha Hauer + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include "dm9000.h" + +/* Board/System/Debug information/definition ---------------- */ + +#define DM9000_PHY 0x40 /* PHY address 0x01 */ + +#define CARDNAME "dm9000" +#define DRV_VERSION "1.31" + +/* + * Transmit timeout, default 5 seconds. + */ +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 */ + + 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; + + 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); + 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; + + 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 wake_state; + + int ip_summed; +} 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 netdev_priv(dev); +} + +/* DM9000 network board routine ---------------------------- */ + +static void +dm9000_reset(board_info_t * db) +{ + dev_dbg(db->dev, "resetting device\n"); + + /* RESET device */ + writeb(DM9000_NCR, db->io_addr); + udelay(200); + writeb(NCR_RST, db->io_data); + udelay(200); +} + +/* + * Read a byte from I/O port + */ +static u8 +ior(board_info_t * db, int reg) +{ + writeb(reg, db->io_addr); + return readb(db->io_data); +} + +/* + * Write a byte to I/O port + */ + +static void +iow(board_info_t * db, int reg, int value) +{ + writeb(reg, db->io_addr); + writeb(value, db->io_data); +} + +/* routines for sending block to chip */ + +static void dm9000_outblk_8bit(void __iomem *reg, void *data, int count) +{ + writesb(reg, data, count); +} + +static void dm9000_outblk_16bit(void __iomem *reg, void *data, int count) +{ + writesw(reg, data, (count+1) >> 1); +} + +static void dm9000_outblk_32bit(void __iomem *reg, void *data, int count) +{ + writesl(reg, data, (count+3) >> 2); +} + +/* input block from chip to memory */ + +static void dm9000_inblk_8bit(void __iomem *reg, void *data, int count) +{ + readsb(reg, data, count); +} + + +static void dm9000_inblk_16bit(void __iomem *reg, void *data, int count) +{ + readsw(reg, data, (count+1) >> 1); +} + +static void dm9000_inblk_32bit(void __iomem *reg, void *data, int count) +{ + readsl(reg, data, (count+3) >> 2); +} + +/* dump block from chip to null */ + +static void dm9000_dumpblk_8bit(void __iomem *reg, int count) +{ + int i; + int tmp; + + for (i = 0; i < count; i++) + tmp = readb(reg); +} + +static void dm9000_dumpblk_16bit(void __iomem *reg, int count) +{ + int i; + int tmp; + + count = (count + 1) >> 1; + + for (i = 0; i < count; i++) + tmp = readw(reg); +} + +static void dm9000_dumpblk_32bit(void __iomem *reg, int count) +{ + int i; + int tmp; + + count = (count + 3) >> 2; + + for (i = 0; i < count; i++) + tmp = readl(reg); +} + +/* dm9000_set_io + * + * select the specified set of io routines to use with the + * device + */ + +static void dm9000_set_io(struct board_info *db, int byte_width) +{ + /* use the size of the data resource to work out what IO + * routines we want to use + */ + + switch (byte_width) { + case 1: + db->dumpblk = dm9000_dumpblk_8bit; + db->outblk = dm9000_outblk_8bit; + db->inblk = dm9000_inblk_8bit; + break; + + + case 3: + 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; + break; + + case 4: + default: + db->dumpblk = dm9000_dumpblk_32bit; + db->outblk = dm9000_outblk_32bit; + db->inblk = dm9000_inblk_32bit; + break; + } +} + +static void dm9000_schedule_poll(board_info_t *db) +{ + if (db->type == TYPE_DM9000E) + schedule_delayed_work(&db->phy_poll, HZ * 2); +} + +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) +{ + 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; + + msleep(1); + + if (timeout-- < 0) { + dev_dbg(db->dev, "timeout waiting EEPROM\n"); + break; + } + } + + return 0; +} + +/* + * Read a word data from EEPROM + */ +static void +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_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); +} + +/* + * Write a word data to SROM + */ +static void +dm9000_write_eeprom(board_info_t *db, int offset, u8 *data) +{ + 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); +} + +/* 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 int dm9000_set_features(struct net_device *dev, u32 features) +{ + board_info_t *dm = to_dm9000_board(dev); + u32 changed = dev->features ^ features; + unsigned long flags; + + if (!(changed & NETIF_F_RXCSUM)) + return 0; + + spin_lock_irqsave(&dm->lock, flags); + iow(dm, DM9000_RCSR, (features & NETIF_F_RXCSUM) ? RCSR_CSUM : 0); + spin_unlock_irqrestore(&dm->lock, flags); + + return 0; +} + +static u32 dm9000_get_link(struct net_device *dev) +{ + board_info_t *dm = to_dm9000_board(dev); + u32 ret; + + 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; + + return ret; +} + +#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 done; + + /* EEPROM access is aligned to two bytes */ + + if (dm->flags & DM9000_PLATF_NO_EEPROM) + return -ENOENT; + + if (ee->magic != DM_EEPROM_MAGIC) + return -EINVAL; + + while (len > 0) { + if (len & 1 || offset & 1) { + int which = offset & 1; + u8 tmp[2]; + + dm9000_read_eeprom(dm, offset / 2, tmp); + tmp[which] = *data; + dm9000_write_eeprom(dm, offset / 2, tmp); + + done = 1; + } else { + dm9000_write_eeprom(dm, offset / 2, data); + done = 2; + } + + data += done; + offset += done; + len -= done; + } + + return 0; +} + +static void dm9000_get_wol(struct net_device *dev, struct ethtool_wolinfo *w) +{ + board_info_t *dm = to_dm9000_board(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) + irq_set_irq_wake(dm->irq_wake, 1); + else if (dm->wake_state & !opts) + irq_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, +}; + +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_unlocked(struct net_device *dev) +{ + board_info_t *db = netdev_priv(dev); + struct netdev_hw_addr *ha; + int i, oft; + u32 hash_val; + u16 hash_table[4]; + u8 rcr = RCR_DIS_LONG | RCR_DIS_CRC | RCR_RXEN; + + dm9000_dbg(db, 1, "entering %s\n", __func__); + + 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 */ + netdev_for_each_mc_addr(ha, dev) { + hash_val = ether_crc_le(6, ha->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); +} + +static void +dm9000_hash_table(struct net_device *dev) +{ + board_info_t *db = netdev_priv(dev); + unsigned long flags; + + spin_lock_irqsave(&db->lock, flags); + dm9000_hash_table_unlocked(dev); + spin_unlock_irqrestore(&db->lock, flags); +} + +/* + * Initialize dm9000 board + */ +static void +dm9000_init_dm9000(struct net_device *dev) +{ + 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 */ + if (dev->hw_features & NETIF_F_RXCSUM) + iow(db, DM9000_RCSR, + (dev->features & NETIF_F_RXCSUM) ? RCSR_CSUM : 0); + + iow(db, DM9000_GPCR, GPCR_GEP_CNTL); /* Let GPIO0 output */ + + 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 */ + iow(db, DM9000_BPTR, 0x3f); /* Less 3Kb, 200us */ + iow(db, DM9000_FCR, 0xff); /* Flow Control */ + iow(db, DM9000_SMCR, 0); /* Special Mode */ + /* clear TX status */ + iow(db, DM9000_NSR, NSR_WAKEST | NSR_TX2END | NSR_TX1END); + iow(db, DM9000_ISR, ISR_CLR_STATUS); /* Clear interrupt status */ + + /* Set address filter table */ + dm9000_hash_table_unlocked(dev); + + 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); + + /* Init Driver variable */ + db->tx_pkt_cnt = 0; + db->queue_pkt_len = 0; + dev->trans_start = jiffies; +} + +/* 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 */ + spin_lock_irqsave(&db->lock, flags); + reg_save = readb(db->io_addr); + + netif_stop_queue(dev); + dm9000_reset(db); + dm9000_init_dm9000(dev); + /* We can accept TX packets again */ + dev->trans_start = jiffies; /* prevent tx timeout */ + 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. + */ +static int +dm9000_start_xmit(struct sk_buff *skb, struct net_device *dev) +{ + unsigned long flags; + board_info_t *db = netdev_priv(dev); + + dm9000_dbg(db, 3, "%s:\n", __func__); + + if (db->tx_pkt_cnt > 1) + return NETDEV_TX_BUSY; + + 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); + dev->stats.tx_bytes += skb->len; + + db->tx_pkt_cnt++; + /* TX control: First packet immediately send, second packet queue */ + if (db->tx_pkt_cnt == 1) { + 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); + } + + spin_unlock_irqrestore(&db->lock, flags); + + /* free this SKB */ + dev_kfree_skb(skb); + + return NETDEV_TX_OK; +} + +/* + * 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) +{ + int tx_status = ior(db, DM9000_NSR); /* Got TX status */ + + if (tx_status & (NSR_TX2END | NSR_TX1END)) { + /* One packet sent complete */ + 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) + dm9000_send_packet(dev, db->queue_ip_summed, + db->queue_pkt_len); + netif_wake_queue(dev); + } +} + +struct dm9000_rxhdr { + u8 RxPktReady; + u8 RxStatus; + __le16 RxLen; +} __packed; + +/* + * Received a packet and pass to upper layer + */ +static void +dm9000_rx(struct net_device *dev) +{ + board_info_t *db = netdev_priv(dev); + struct dm9000_rxhdr rxhdr; + struct sk_buff *skb; + u8 rxbyte, *rdptr; + bool GoodPacket; + int RxLen; + + /* Check packet ready or not */ + do { + ior(db, DM9000_MRCMDX); /* Dummy read */ + + /* Get most updated data */ + rxbyte = readb(db->io_data); + + /* Status check: this byte must be 0 or 1 */ + 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)) + return; + + /* A packet ready now & Get status/length */ + GoodPacket = true; + writeb(DM9000_MRCMD, db->io_addr); + + (db->inblk)(db->io_data, &rxhdr, sizeof(rxhdr)); + + 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; + 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); + } + + /* 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 & RSR_FOE) { + if (netif_msg_rx_err(db)) + dev_dbg(db->dev, "fifo error\n"); + dev->stats.rx_fifo_errors++; + } + 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 & 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)) { + skb_reserve(skb, 2); + rdptr = (u8 *) skb_put(skb, RxLen - 4); + + /* Read received packet from RX SRAM */ + + (db->inblk)(db->io_data, rdptr, RxLen); + dev->stats.rx_bytes += RxLen; + + /* Pass to upper layer */ + skb->protocol = eth_type_trans(skb, dev); + if (dev->features & NETIF_F_RXCSUM) { + if ((((rxbyte & 0x1c) << 3) & rxbyte) == 0) + skb->ip_summed = CHECKSUM_UNNECESSARY; + else + skb_checksum_none_assert(skb); + } + netif_rx(skb); + dev->stats.rx_packets++; + + } else { + /* need to dump the packet's data */ + + (db->dumpblk)(db->io_data, RxLen); + } + } while (rxbyte & DM9000_PKT_RDY); +} + +static irqreturn_t dm9000_interrupt(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + board_info_t *db = netdev_priv(dev); + int int_status; + unsigned long flags; + u8 reg_save; + + dm9000_dbg(db, 3, "entering %s\n", __func__); + + /* A real interrupt coming */ + + /* holders of db->lock must always block IRQs */ + spin_lock_irqsave(&db->lock, flags); + + /* 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_irqrestore(&db->lock, flags); + + return IRQ_HANDLED; +} + +static irqreturn_t dm9000_wol_interrupt(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + board_info_t *db = netdev_priv(dev); + unsigned long flags; + unsigned nsr, wcr; + + spin_lock_irqsave(&db->lock, flags); + + nsr = ior(db, DM9000_NSR); + wcr = ior(db, DM9000_WCR); + + dev_dbg(db->dev, "%s: NSR=0x%02x, WCR=0x%02x\n", __func__, nsr, wcr); + + if (nsr & NSR_WAKEST) { + /* clear, so we can avoid */ + iow(db, DM9000_NSR, NSR_WAKEST); + + 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); + + } + + 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; + + /* GPIO0 on pre-activate PHY, Reg 1F is not set by reset */ + iow(db, DM9000_GPR, 0); /* REG_1F bit0 activate phyxcer */ + mdelay(1); /* delay needs by DM9000B */ + + /* Initialize DM9000 board */ + dm9000_reset(db); + dm9000_init_dm9000(dev); + + if (request_irq(dev->irq, dm9000_interrupt, irqflags, dev->name, dev)) + return -EAGAIN; + + /* 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 + */ +static int +dm9000_phy_read(struct net_device *dev, int phy_reg_unused, int reg) +{ + 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 */ + reg_save = readb(db->io_addr); + + /* Fill the phyxcer register into REG_0C */ + iow(db, DM9000_EPAR, DM9000_PHY | reg); + + 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 */ + ret = (ior(db, DM9000_EPDRH) << 8) | ior(db, DM9000_EPDRL); + + /* 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; +} + +/* + * Write a word to phyxcer + */ +static void +dm9000_phy_write(struct net_device *dev, + int phyaddr_unused, int reg, int value) +{ + 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 */ + reg_save = readb(db->io_addr); + + /* Fill the phyxcer register into REG_0C */ + iow(db, DM9000_EPAR, DM9000_PHY | reg); + + /* Fill the written data into REG_0D & REG_0E */ + 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, 0x0); /* Clear phyxcer write command */ + + /* restore the previous address */ + writeb(reg_save, db->io_addr); + + 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_stop(struct net_device *ndev) +{ + board_info_t *db = netdev_priv(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_set_features = dm9000_set_features, + .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 = irq_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 { + irq_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) { + ndev->hw_features = NETIF_F_RXCSUM | NETIF_F_IP_CSUM; + ndev->features |= ndev->hw_features; + } + + /* 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); + + random_ether_addr(ndev->dev_addr); + mac_src = "random"; + } + + + 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_suspend(struct device *dev) +{ + 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)) { + /* 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 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); + + platform_set_drvdata(pdev, NULL); + + unregister_netdev(ndev); + dm9000_release_board(pdev, netdev_priv(ndev)); + 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, + .pm = &dm9000_drv_pm_ops, + }, + .probe = dm9000_probe, + .remove = __devexit_p(dm9000_drv_remove), +}; + +static int __init +dm9000_init(void) +{ + printk(KERN_INFO "%s Ethernet Driver, V%s\n", CARDNAME, DRV_VERSION); + + return platform_driver_register(&dm9000_driver); +} + +static void __exit +dm9000_cleanup(void) +{ + platform_driver_unregister(&dm9000_driver); +} + +module_init(dm9000_init); +module_exit(dm9000_cleanup); + +MODULE_AUTHOR("Sascha Hauer, Ben Dooks"); +MODULE_DESCRIPTION("Davicom DM9000 network driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:dm9000"); diff --git a/drivers/net/ethernet/davicom/dm9000.h b/drivers/net/ethernet/davicom/dm9000.h new file mode 100644 index 000000000000..55688bd1a3ef --- /dev/null +++ b/drivers/net/ethernet/davicom/dm9000.h @@ -0,0 +1,171 @@ +/* + * dm9000 Ethernet + */ + +#ifndef _DM9000X_H_ +#define _DM9000X_H_ + +#define DM9000_ID 0x90000A46 + +/* although the registers are 16 bit, they are 32-bit aligned. + */ + +#define DM9000_NCR 0x00 +#define DM9000_NSR 0x01 +#define DM9000_TCR 0x02 +#define DM9000_TSR1 0x03 +#define DM9000_TSR2 0x04 +#define DM9000_RCR 0x05 +#define DM9000_RSR 0x06 +#define DM9000_ROCR 0x07 +#define DM9000_BPTR 0x08 +#define DM9000_FCTR 0x09 +#define DM9000_FCR 0x0A +#define DM9000_EPCR 0x0B +#define DM9000_EPAR 0x0C +#define DM9000_EPDRL 0x0D +#define DM9000_EPDRH 0x0E +#define DM9000_WCR 0x0F + +#define DM9000_PAR 0x10 +#define DM9000_MAR 0x16 + +#define DM9000_GPCR 0x1e +#define DM9000_GPR 0x1f +#define DM9000_TRPAL 0x22 +#define DM9000_TRPAH 0x23 +#define DM9000_RWPAL 0x24 +#define DM9000_RWPAH 0x25 + +#define DM9000_VIDL 0x28 +#define DM9000_VIDH 0x29 +#define DM9000_PIDL 0x2A +#define DM9000_PIDH 0x2B + +#define DM9000_CHIPR 0x2C +#define DM9000_SMCR 0x2F + +#define DM9000_ETXCSR 0x30 +#define DM9000_TCCR 0x31 +#define DM9000_RCSR 0x32 + +#define CHIPR_DM9000A 0x19 +#define CHIPR_DM9000B 0x1A + +#define DM9000_MRCMDX 0xF0 +#define DM9000_MRCMD 0xF2 +#define DM9000_MRRL 0xF4 +#define DM9000_MRRH 0xF5 +#define DM9000_MWCMDX 0xF6 +#define DM9000_MWCMD 0xF8 +#define DM9000_MWRL 0xFA +#define DM9000_MWRH 0xFB +#define DM9000_TXPLL 0xFC +#define DM9000_TXPLH 0xFD +#define DM9000_ISR 0xFE +#define DM9000_IMR 0xFF + +#define NCR_EXT_PHY (1<<7) +#define NCR_WAKEEN (1<<6) +#define NCR_FCOL (1<<4) +#define NCR_FDX (1<<3) +#define NCR_LBK (3<<1) +#define NCR_RST (1<<0) + +#define NSR_SPEED (1<<7) +#define NSR_LINKST (1<<6) +#define NSR_WAKEST (1<<5) +#define NSR_TX2END (1<<3) +#define NSR_TX1END (1<<2) +#define NSR_RXOV (1<<1) + +#define TCR_TJDIS (1<<6) +#define TCR_EXCECM (1<<5) +#define TCR_PAD_DIS2 (1<<4) +#define TCR_CRC_DIS2 (1<<3) +#define TCR_PAD_DIS1 (1<<2) +#define TCR_CRC_DIS1 (1<<1) +#define TCR_TXREQ (1<<0) + +#define TSR_TJTO (1<<7) +#define TSR_LC (1<<6) +#define TSR_NC (1<<5) +#define TSR_LCOL (1<<4) +#define TSR_COL (1<<3) +#define TSR_EC (1<<2) + +#define RCR_WTDIS (1<<6) +#define RCR_DIS_LONG (1<<5) +#define RCR_DIS_CRC (1<<4) +#define RCR_ALL (1<<3) +#define RCR_RUNT (1<<2) +#define RCR_PRMSC (1<<1) +#define RCR_RXEN (1<<0) + +#define RSR_RF (1<<7) +#define RSR_MF (1<<6) +#define RSR_LCS (1<<5) +#define RSR_RWTO (1<<4) +#define RSR_PLE (1<<3) +#define RSR_AE (1<<2) +#define RSR_CE (1<<1) +#define RSR_FOE (1<<0) + +#define WCR_LINKEN (1 << 5) +#define WCR_SAMPLEEN (1 << 4) +#define WCR_MAGICEN (1 << 3) +#define WCR_LINKST (1 << 2) +#define WCR_SAMPLEST (1 << 1) +#define WCR_MAGICST (1 << 0) + +#define FCTR_HWOT(ot) (( ot & 0xf ) << 4 ) +#define FCTR_LWOT(ot) ( ot & 0xf ) + +#define IMR_PAR (1<<7) +#define IMR_ROOM (1<<3) +#define IMR_ROM (1<<2) +#define IMR_PTM (1<<1) +#define IMR_PRM (1<<0) + +#define ISR_ROOS (1<<3) +#define ISR_ROS (1<<2) +#define ISR_PTS (1<<1) +#define ISR_PRS (1<<0) +#define ISR_CLR_STATUS (ISR_ROOS | ISR_ROS | ISR_PTS | ISR_PRS) + +#define EPCR_REEP (1<<5) +#define EPCR_WEP (1<<4) +#define EPCR_EPOS (1<<3) +#define EPCR_ERPRR (1<<2) +#define EPCR_ERPRW (1<<1) +#define EPCR_ERRE (1<<0) + +#define GPCR_GEP_CNTL (1<<0) + +#define TCCR_IP (1<<0) +#define TCCR_TCP (1<<1) +#define TCCR_UDP (1<<2) + +#define RCSR_UDP_BAD (1<<7) +#define RCSR_TCP_BAD (1<<6) +#define RCSR_IP_BAD (1<<5) +#define RCSR_UDP (1<<4) +#define RCSR_TCP (1<<3) +#define RCSR_IP (1<<2) +#define RCSR_CSUM (1<<1) +#define RCSR_DISCARD (1<<0) + +#define DM9000_PKT_RDY 0x01 /* Packet ready to receive */ +#define DM9000_PKT_ERR 0x02 +#define DM9000_PKT_MAX 1536 /* Received packet max size */ + +/* DM9000A / DM9000B definitions */ + +#define IMR_LNKCHNG (1<<5) +#define IMR_UNDERRUN (1<<4) + +#define ISR_LNKCHNG (1<<5) +#define ISR_UNDERRUN (1<<4) + +#endif /* _DM9000X_H_ */ +