diff options
Diffstat (limited to 'drivers/net/dm9000.c')
| -rw-r--r-- | drivers/net/dm9000.c | 1218 |
1 files changed, 0 insertions, 1218 deletions
diff --git a/drivers/net/dm9000.c b/drivers/net/dm9000.c deleted file mode 100644 index 24996da4c1c..00000000000 --- a/drivers/net/dm9000.c +++ /dev/null @@ -1,1218 +0,0 @@ -/* - * dm9000.c: Version 1.2 03/18/2003 - * - * A Davicom DM9000 ISA NIC 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. - * - * V0.11 06/20/2001 REG_0A bit3=1, default enable BP with DA match - * 06/22/2001 Support DM9801 progrmming - * E3: R25 = ((R24 + NF) & 0x00ff) | 0xf000 - * E4: R25 = ((R24 + NF) & 0x00ff) | 0xc200 - * R17 = (R17 & 0xfff0) | NF + 3 - * E5: R25 = ((R24 + NF - 3) & 0x00ff) | 0xc200 - * R17 = (R17 & 0xfff0) | NF - * - * v1.00 modify by simon 2001.9.5 - * change for kernel 2.4.x - * - * v1.1 11/09/2001 fix force mode bug - * - * v1.2 03/18/2003 Weilun Huang <weilun_huang@davicom.com.tw>: - * Fixed phy reset. - * Added tx/rx 32 bit mode. - * Cleaned up for kernel merge. - * - * 03/03/2004 Sascha Hauer <s.hauer@pengutronix.de> - * Port to 2.6 kernel - * - * 24-Sep-2004 Ben Dooks <ben@simtec.co.uk> - * Cleanup of code to remove ifdefs - * Allowed platform device data to influence access width - * Reformatting areas of code - * - * 17-Mar-2005 Sascha Hauer <s.hauer@pengutronix.de> - * * removed 2.4 style module parameters - * * removed removed unused stat counter and fixed - * net_device_stats - * * introduced tx_timeout function - * * reworked locking - * - * 01-Jul-2005 Ben Dooks <ben@simtec.co.uk> - * * fixed spinlock call without pointer - * * ensure spinlock is initialised - */ - -#include <linux/module.h> -#include <linux/ioport.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/init.h> -#include <linux/skbuff.h> -#include <linux/spinlock.h> -#include <linux/crc32.h> -#include <linux/mii.h> -#include <linux/dm9000.h> -#include <linux/delay.h> -#include <linux/platform_device.h> - -#include <asm/delay.h> -#include <asm/irq.h> -#include <asm/io.h> - -#include "dm9000.h" - -/* Board/System/Debug information/definition ---------------- */ - -#define DM9000_PHY 0x40 /* PHY address 0x01 */ - -#define TRUE 1 -#define FALSE 0 - -#define CARDNAME "dm9000" -#define PFX CARDNAME ": " - -#define DM9000_TIMER_WUT jiffies+(HZ*2) /* timer wakeup time : 2 second */ - -#define DM9000_DEBUG 0 - -#if DM9000_DEBUG > 2 -#define PRINTK3(args...) printk(CARDNAME ": " args) -#else -#define PRINTK3(args...) do { } while(0) -#endif - -#if DM9000_DEBUG > 1 -#define PRINTK2(args...) printk(CARDNAME ": " args) -#else -#define PRINTK2(args...) do { } while(0) -#endif - -#if DM9000_DEBUG > 0 -#define PRINTK1(args...) printk(CARDNAME ": " args) -#define PRINTK(args...) printk(CARDNAME ": " args) -#else -#define PRINTK1(args...) do { } while(0) -#define PRINTK(args...) printk(KERN_DEBUG args) -#endif - -/* - * Transmit timeout, default 5 seconds. - */ -static int watchdog = 5000; -module_param(watchdog, int, 0400); -MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds"); - -/* 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 dbug_cnt; - u8 io_mode; /* 0:word, 2:byte */ - u8 phy_addr; - - 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 resource *addr_res; /* resources found */ - struct resource *data_res; - struct resource *addr_req; /* resources requested */ - struct resource *data_req; - struct resource *irq_res; - - struct timer_list timer; - struct net_device_stats stats; - unsigned char srom[128]; - spinlock_t lock; - - struct mii_if_info mii; - u32 msg_enable; -} board_info_t; - -/* function declaration ------------------------------------- */ -static int dm9000_probe(struct platform_device *); -static int dm9000_open(struct net_device *); -static int dm9000_start_xmit(struct sk_buff *, struct net_device *); -static int dm9000_stop(struct net_device *); - - -static void dm9000_timer(unsigned long); -static void dm9000_init_dm9000(struct net_device *); - -static struct net_device_stats *dm9000_get_stats(struct net_device *); - -static irqreturn_t dm9000_interrupt(int, void *, struct pt_regs *); - -static int dm9000_phy_read(struct net_device *dev, int phyaddr_unsused, int reg); -static void dm9000_phy_write(struct net_device *dev, int phyaddr_unused, int reg, - int value); -static u16 read_srom_word(board_info_t *, int); -static void dm9000_rx(struct net_device *); -static void dm9000_hash_table(struct net_device *); - -//#define DM9000_PROGRAM_EEPROM -#ifdef DM9000_PROGRAM_EEPROM -static void program_eeprom(board_info_t * db); -#endif -/* DM9000 network board routine ---------------------------- */ - -static void -dm9000_reset(board_info_t * db) -{ - PRINTK1("dm9000x: resetting\n"); - /* 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 2: - db->dumpblk = dm9000_dumpblk_16bit; - db->outblk = dm9000_outblk_16bit; - db->inblk = dm9000_inblk_16bit; - break; - - case 3: - printk(KERN_ERR PFX ": 3 byte IO, falling back to 16bit\n"); - 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; - } -} - - -/* Our watchdog timed out. Called by the networking layer */ -static void dm9000_timeout(struct net_device *dev) -{ - board_info_t *db = (board_info_t *) dev->priv; - u8 reg_save; - unsigned long flags; - - /* Save previous register address */ - reg_save = readb(db->io_addr); - spin_lock_irqsave(&db->lock,flags); - - netif_stop_queue(dev); - dm9000_reset(db); - dm9000_init_dm9000(dev); - /* We can accept TX packets again */ - dev->trans_start = jiffies; - netif_wake_queue(dev); - - /* Restore previous register address */ - writeb(reg_save, db->io_addr); - spin_unlock_irqrestore(&db->lock,flags); -} - - -/* dm9000_release_board - * - * release a board, and any mapped resources - */ - -static void -dm9000_release_board(struct platform_device *pdev, struct board_info *db) -{ - if (db->data_res == NULL) { - if (db->addr_res != NULL) - release_mem_region((unsigned long)db->io_addr, 4); - return; - } - - /* unmap our resources */ - - iounmap(db->io_addr); - iounmap(db->io_data); - - /* release the resources */ - - if (db->data_req != NULL) { - release_resource(db->data_req); - kfree(db->data_req); - } - - if (db->addr_res != NULL) { - release_resource(db->addr_res); - kfree(db->addr_req); - } -} - -#define res_size(_r) (((_r)->end - (_r)->start) + 1) - -/* - * Search DM9000 board, allocate space and register it - */ -static int -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; - unsigned long base; - int ret = 0; - int iosize; - int i; - u32 id_val; - - /* Init network device */ - ndev = alloc_etherdev(sizeof (struct board_info)); - if (!ndev) { - printk("%s: could not allocate device.\n", CARDNAME); - return -ENOMEM; - } - - SET_MODULE_OWNER(ndev); - SET_NETDEV_DEV(ndev, &pdev->dev); - - PRINTK2("dm9000_probe()"); - - /* setup board info structure */ - db = (struct board_info *) ndev->priv; - memset(db, 0, sizeof (*db)); - - spin_lock_init(&db->lock); - - if (pdev->num_resources < 2) { - ret = -ENODEV; - goto out; - } - - switch (pdev->num_resources) { - case 2: - base = pdev->resource[0].start; - - if (!request_mem_region(base, 4, ndev->name)) { - ret = -EBUSY; - goto out; - } - - ndev->base_addr = base; - ndev->irq = pdev->resource[1].start; - db->io_addr = (void *)base; - db->io_data = (void *)(base + 4); - - break; - - case 3: - db->addr_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - db->data_res = platform_get_resource(pdev, IORESOURCE_MEM, 1); - db->irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - - if (db->addr_res == NULL || db->data_res == NULL) { - printk(KERN_ERR PFX "insufficient resources\n"); - ret = -ENOENT; - goto out; - } - - i = res_size(db->addr_res); - db->addr_req = request_mem_region(db->addr_res->start, i, - pdev->name); - - if (db->addr_req == NULL) { - printk(KERN_ERR PFX "cannot claim address reg area\n"); - ret = -EIO; - goto out; - } - - db->io_addr = ioremap(db->addr_res->start, i); - - if (db->io_addr == NULL) { - printk(KERN_ERR "failed to ioremap address reg\n"); - ret = -EINVAL; - goto out; - } - - iosize = res_size(db->data_res); - db->data_req = request_mem_region(db->data_res->start, iosize, - pdev->name); - - if (db->data_req == NULL) { - printk(KERN_ERR PFX "cannot claim data reg area\n"); - ret = -EIO; - goto out; - } - - db->io_data = ioremap(db->data_res->start, iosize); - - if (db->io_data == NULL) { - printk(KERN_ERR "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; - } - - dm9000_reset(db); - - /* try two times, DM9000 sometimes gets the first read wrong */ - for (i = 0; i < 2; i++) { - id_val = ior(db, DM9000_VIDL); - id_val |= (u32)ior(db, DM9000_VIDH) << 8; - id_val |= (u32)ior(db, DM9000_PIDL) << 16; - id_val |= (u32)ior(db, DM9000_PIDH) << 24; - - if (id_val == DM9000_ID) - break; - printk("%s: read wrong id 0x%08x\n", CARDNAME, id_val); - } - - if (id_val != DM9000_ID) { - printk("%s: wrong id: 0x%08x\n", CARDNAME, id_val); - goto release; - } - - /* from this point we assume that we have found a DM9000 */ - - /* driver system function */ - ether_setup(ndev); - - ndev->open = &dm9000_open; - ndev->hard_start_xmit = &dm9000_start_xmit; - ndev->tx_timeout = &dm9000_timeout; - ndev->watchdog_timeo = msecs_to_jiffies(watchdog); - ndev->stop = &dm9000_stop; - ndev->get_stats = &dm9000_get_stats; - ndev->set_multicast_list = &dm9000_hash_table; - -#ifdef DM9000_PROGRAM_EEPROM - program_eeprom(db); -#endif - db->msg_enable = NETIF_MSG_LINK; - db->mii.phy_id_mask = 0x1f; - db->mii.reg_num_mask = 0x1f; - db->mii.force_media = 0; - db->mii.full_duplex = 0; - db->mii.dev = ndev; - db->mii.mdio_read = dm9000_phy_read; - db->mii.mdio_write = dm9000_phy_write; - - /* Read SROM content */ - for (i = 0; i < 64; i++) - ((u16 *) db->srom)[i] = read_srom_word(db, i); - - /* Set Node Address */ - for (i = 0; i < 6; i++) - ndev->dev_addr[i] = db->srom[i]; - - if (!is_valid_ether_addr(ndev->dev_addr)) - printk("%s: Invalid ethernet MAC address. Please " - "set using ifconfig\n", ndev->name); - - platform_set_drvdata(pdev, ndev); - ret = register_netdev(ndev); - - if (ret == 0) { - printk("%s: dm9000 at %p,%p IRQ %d MAC: ", - ndev->name, db->io_addr, db->io_data, ndev->irq); - for (i = 0; i < 5; i++) - printk("%02x:", ndev->dev_addr[i]); - printk("%02x\n", ndev->dev_addr[5]); - } - return 0; - - release: - out: - printk("%s: not found (%d).\n", CARDNAME, ret); - - dm9000_release_board(pdev, db); - kfree(ndev); - - return ret; -} - -/* - * Open the interface. - * The interface is opened whenever "ifconfig" actives it. - */ -static int -dm9000_open(struct net_device *dev) -{ - board_info_t *db = (board_info_t *) dev->priv; - - PRINTK2("entering dm9000_open\n"); - - if (request_irq(dev->irq, &dm9000_interrupt, SA_SHIRQ, dev->name, dev)) - return -EAGAIN; - - /* Initialize DM9000 board */ - dm9000_reset(db); - dm9000_init_dm9000(dev); - - /* Init driver variable */ - db->dbug_cnt = 0; - - /* set and active a timer process */ - init_timer(&db->timer); - db->timer.expires = DM9000_TIMER_WUT; - db->timer.data = (unsigned long) dev; - db->timer.function = &dm9000_timer; - add_timer(&db->timer); - - mii_check_media(&db->mii, netif_msg_link(db), 1); - netif_start_queue(dev); - - return 0; -} - -/* - * Initilize dm9000 board - */ -static void -dm9000_init_dm9000(struct net_device *dev) -{ - board_info_t *db = (board_info_t *) dev->priv; - - PRINTK1("entering %s\n",__FUNCTION__); - - /* I/O mode */ - db->io_mode = ior(db, DM9000_ISR) >> 6; /* ISR bit7:6 keeps I/O mode */ - - /* GPIO0 on pre-activate PHY */ - iow(db, DM9000_GPR, 0); /* REG_1F bit0 activate phyxcer */ - iow(db, DM9000_GPCR, GPCR_GEP_CNTL); /* Let GPIO0 output */ - iow(db, DM9000_GPR, 0); /* Enable PHY */ - - /* 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(dev); - - /* Activate DM9000 */ - iow(db, DM9000_RCR, RCR_DIS_LONG | RCR_DIS_CRC | RCR_RXEN); - /* Enable TX/RX interrupt mask */ - iow(db, DM9000_IMR, IMR_PAR | IMR_PTM | IMR_PRM); - - /* Init Driver variable */ - db->tx_pkt_cnt = 0; - db->queue_pkt_len = 0; - dev->trans_start = 0; - spin_lock_init(&db->lock); -} - -/* - * 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) -{ - board_info_t *db = (board_info_t *) dev->priv; - - PRINTK3("dm9000_start_xmit\n"); - - if (db->tx_pkt_cnt > 1) - return 1; - - netif_stop_queue(dev); - - /* Disable all interrupts */ - iow(db, DM9000_IMR, IMR_PAR); - - /* Move data to DM9000 TX RAM */ - writeb(DM9000_MWCMD, db->io_addr); - - (db->outblk)(db->io_data, skb->data, skb->len); - db->stats.tx_bytes += skb->len; - - /* TX control: First packet immediately send, second packet queue */ - if (db->tx_pkt_cnt == 0) { - - /* First Packet */ - db->tx_pkt_cnt++; - - /* Set TX length to DM9000 */ - iow(db, DM9000_TXPLL, skb->len & 0xff); - iow(db, DM9000_TXPLH, (skb->len >> 8) & 0xff); - - /* Issue TX polling command */ - iow(db, DM9000_TCR, TCR_TXREQ); /* Cleared after TX complete */ - - dev->trans_start = jiffies; /* save the time stamp */ - - } else { - /* Second packet */ - db->tx_pkt_cnt++; - db->queue_pkt_len = skb->len; - } - - /* free this SKB */ - dev_kfree_skb(skb); - - /* Re-enable resource check */ - if (db->tx_pkt_cnt == 1) - netif_wake_queue(dev); - - /* Re-enable interrupt */ - iow(db, DM9000_IMR, IMR_PAR | IMR_PTM | IMR_PRM); - - return 0; -} - -static void -dm9000_shutdown(struct net_device *dev) -{ - board_info_t *db = (board_info_t *) dev->priv; - - /* RESET device */ - dm9000_phy_write(dev, 0, MII_BMCR, BMCR_RESET); /* PHY RESET */ - iow(db, DM9000_GPR, 0x01); /* Power-Down PHY */ - iow(db, DM9000_IMR, IMR_PAR); /* Disable all interrupt */ - iow(db, DM9000_RCR, 0x00); /* Disable RX */ -} - -/* - * Stop the interface. - * The interface is stopped when it is brought. - */ -static int -dm9000_stop(struct net_device *ndev) -{ - board_info_t *db = (board_info_t *) ndev->priv; - - PRINTK1("entering %s\n",__FUNCTION__); - - /* deleted timer */ - del_timer(&db->timer); - - netif_stop_queue(ndev); - netif_carrier_off(ndev); - - /* free interrupt */ - free_irq(ndev->irq, ndev); - - dm9000_shutdown(ndev); - - return 0; -} - -/* - * DM9000 interrupt handler - * receive the packet to upper layer, free the transmitted packet - */ - -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--; - db->stats.tx_packets++; - - /* Queue packet check & send */ - if (db->tx_pkt_cnt > 0) { - iow(db, DM9000_TXPLL, db->queue_pkt_len & 0xff); - iow(db, DM9000_TXPLH, (db->queue_pkt_len >> 8) & 0xff); - iow(db, DM9000_TCR, TCR_TXREQ); - dev->trans_start = jiffies; - } - netif_wake_queue(dev); - } -} - -static irqreturn_t -dm9000_interrupt(int irq, void *dev_id, struct pt_regs *regs) -{ - struct net_device *dev = dev_id; - board_info_t *db; - int int_status; - u8 reg_save; - - PRINTK3("entering %s\n",__FUNCTION__); - - if (!dev) { - PRINTK1("dm9000_interrupt() without DEVICE arg\n"); - return IRQ_HANDLED; - } - - /* A real interrupt coming */ - db = (board_info_t *) dev->priv; - spin_lock(&db->lock); - - /* Save previous register address */ - reg_save = readb(db->io_addr); - - /* Disable all interrupts */ - iow(db, DM9000_IMR, IMR_PAR); - - /* Got DM9000 interrupt status */ - int_status = ior(db, DM9000_ISR); /* Got ISR */ - iow(db, DM9000_ISR, int_status); /* Clear ISR status */ - - /* Received the coming packet */ - if (int_status & ISR_PRS) - dm9000_rx(dev); - - /* Trnasmit Interrupt check */ - if (int_status & ISR_PTS) - dm9000_tx_done(dev, db); - - /* Re-enable interrupt mask */ - iow(db, DM9000_IMR, IMR_PAR | IMR_PTM | IMR_PRM); - - /* Restore previous register address */ - writeb(reg_save, db->io_addr); - - spin_unlock(&db->lock); - - return IRQ_HANDLED; -} - -/* - * Get statistics from driver. - */ -static struct net_device_stats * -dm9000_get_stats(struct net_device *dev) -{ - board_info_t *db = (board_info_t *) dev->priv; - return &db->stats; -} - - -/* - * A periodic timer routine - * Dynamic media sense, allocated Rx buffer... - */ -static void -dm9000_timer(unsigned long data) -{ - struct net_device *dev = (struct net_device *) data; - board_info_t *db = (board_info_t *) dev->priv; - - PRINTK3("dm9000_timer()\n"); - - mii_check_media(&db->mii, netif_msg_link(db), 0); - - /* Set timer again */ - db->timer.expires = DM9000_TIMER_WUT; - add_timer(&db->timer); -} - -struct dm9000_rxhdr { - u16 RxStatus; - u16 RxLen; -} __attribute__((__packed__)); - -/* - * Received a packet and pass to upper layer - */ -static void -dm9000_rx(struct net_device *dev) -{ - board_info_t *db = (board_info_t *) dev->priv; - struct dm9000_rxhdr rxhdr; - struct sk_buff *skb; - u8 rxbyte, *rdptr; - int 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_RDY) { - printk("status check failed: %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 = rxhdr.RxLen; - - /* Packet Status check */ - if (RxLen < 0x40) { - GoodPacket = FALSE; - PRINTK1("Bad Packet received (runt)\n"); - } - - if (RxLen > DM9000_PKT_MAX) { - PRINTK1("RST: RX Len:%x\n", RxLen); - } - - if (rxhdr.RxStatus & 0xbf00) { - GoodPacket = FALSE; - if (rxhdr.RxStatus & 0x100) { - PRINTK1("fifo error\n"); - db->stats.rx_fifo_errors++; - } - if (rxhdr.RxStatus & 0x200) { - PRINTK1("crc error\n"); - db->stats.rx_crc_errors++; - } - if (rxhdr.RxStatus & 0x8000) { - PRINTK1("length error\n"); - db->stats.rx_length_errors++; - } - } - - /* Move data from DM9000 */ - if (GoodPacket - && ((skb = dev_alloc_skb(RxLen + 4)) != NULL)) { - skb->dev = dev; - skb_reserve(skb, 2); - rdptr = (u8 *) skb_put(skb, RxLen - 4); - - /* Read received packet from RX SRAM */ - - (db->inblk)(db->io_data, rdptr, RxLen); - db->stats.rx_bytes += RxLen; - - /* Pass to upper layer */ - skb->protocol = eth_type_trans(skb, dev); - netif_rx(skb); - db->stats.rx_packets++; - - } else { - /* need to dump the packet's data */ - - (db->dumpblk)(db->io_data, RxLen); - } - } while (rxbyte == DM9000_PKT_RDY); -} - -/* - * Read a word data from SROM - */ -static u16 -read_srom_word(board_info_t * db, int offset) -{ - iow(db, DM9000_EPAR, offset); - iow(db, DM9000_EPCR, EPCR_ERPRR); - mdelay(8); /* according to the datasheet 200us should be enough, - but it doesn't work */ - iow(db, DM9000_EPCR, 0x0); - return (ior(db, DM9000_EPDRL) + (ior(db, DM9000_EPDRH) << 8)); -} - -#ifdef DM9000_PROGRAM_EEPROM -/* - * Write a word data to SROM - */ -static void -write_srom_word(board_info_t * db, int offset, u16 val) -{ - iow(db, DM9000_EPAR, offset); - iow(db, DM9000_EPDRH, ((val >> 8) & 0xff)); - iow(db, DM9000_EPDRL, (val & 0xff)); - iow(db, DM9000_EPCR, EPCR_WEP | EPCR_ERPRW); - mdelay(8); /* same shit */ - iow(db, DM9000_EPCR, 0); -} - -/* - * Only for development: - * Here we write static data to the eeprom in case - * we don't have valid content on a new board - */ -static void -program_eeprom(board_info_t * db) -{ - u16 eeprom[] = { 0x0c00, 0x007f, 0x1300, /* MAC Address */ - 0x0000, /* Autoload: accept nothing */ - 0x0a46, 0x9000, /* Vendor / Product ID */ - 0x0000, /* pin control */ - 0x0000, - }; /* Wake-up mode control */ - int i; - for (i = 0; i < 8; i++) - write_srom_word(db, i, eeprom[i]); -} -#endif - - -/* - * Calculate the CRC valude of the Rx packet - * flag = 1 : return the reverse CRC (for the received packet CRC) - * 0 : return the normal CRC (for Hash Table index) - */ - -static unsigned long -cal_CRC(unsigned char *Data, unsigned int Len, u8 flag) -{ - - u32 crc = ether_crc_le(Len, Data); - - if (flag) - return ~crc; - - return crc; -} - -/* - * Set DM9000 multicast address - */ -static void -dm9000_hash_table(struct net_device *dev) -{ - board_info_t *db = (board_info_t *) dev->priv; - struct dev_mc_list *mcptr = dev->mc_list; - int mc_cnt = dev->mc_count; - u32 hash_val; - u16 i, oft, hash_table[4]; - unsigned long flags; - - PRINTK2("dm9000_hash_table()\n"); - - spin_lock_irqsave(&db->lock,flags); - - for (i = 0, oft = 0x10; 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; - - /* the multicast address in Hash Table : 64 bits */ - for (i = 0; i < mc_cnt; i++, mcptr = mcptr->next) { - hash_val = cal_CRC((char *) mcptr->dmi_addr, 6, 0) & 0x3f; - hash_table[hash_val / 16] |= (u16) 1 << (hash_val % 16); - } - - /* Write the hash table to MAC MD table */ - for (i = 0, oft = 0x16; i < 4; i++) { - iow(db, oft++, hash_table[i] & 0xff); - iow(db, oft++, (hash_table[i] >> 8) & 0xff); - } - - spin_unlock_irqrestore(&db->lock,flags); -} - - -/* - * Read a word from phyxcer - */ -static int -dm9000_phy_read(struct net_device *dev, int phy_reg_unused, int reg) -{ - board_info_t *db = (board_info_t *) dev->priv; - unsigned long flags; - unsigned int reg_save; - int ret; - - 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, 0xc); /* Issue phyxcer read command */ - udelay(100); /* Wait read complete */ - 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); - - 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 = (board_info_t *) dev->priv; - unsigned long flags; - unsigned long reg_save; - - 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 & 0xff)); - iow(db, DM9000_EPDRH, ((value >> 8) & 0xff)); - - iow(db, DM9000_EPCR, 0xa); /* Issue phyxcer write command */ - udelay(500); /* Wait write complete */ - iow(db, DM9000_EPCR, 0x0); /* Clear phyxcer write command */ - - /* restore the previous address */ - writeb(reg_save, db->io_addr); - - spin_unlock_irqrestore(&db->lock,flags); -} - -static int -dm9000_drv_suspend(struct platform_device *dev, pm_message_t state) -{ - struct net_device *ndev = platform_get_drvdata(dev); - - if (ndev) { - if (netif_running(ndev)) { - netif_device_detach(ndev); - dm9000_shutdown(ndev); - } - } - return 0; -} - -static int -dm9000_drv_resume(struct platform_device *dev) -{ - struct net_device *ndev = platform_get_drvdata(dev); - board_info_t *db = (board_info_t *) ndev->priv; - - if (ndev) { - - if (netif_running(ndev)) { - dm9000_reset(db); - dm9000_init_dm9000(ndev); - - netif_device_attach(ndev); - } - } - return 0; -} - -static int -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, (board_info_t *) ndev->priv); - kfree(ndev); /* free device structure */ - - PRINTK1("clean_module() exit\n"); - - return 0; -} - -static struct platform_driver dm9000_driver = { - .probe = dm9000_probe, - .remove = dm9000_drv_remove, - .suspend = dm9000_drv_suspend, - .resume = dm9000_drv_resume, - .driver = { - .name = "dm9000", - }, -}; - -static int __init -dm9000_init(void) -{ - printk(KERN_INFO "%s Ethernet Driver\n", CARDNAME); - - return platform_driver_register(&dm9000_driver); /* search board and register */ -} - -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"); |