Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1 | /* |
| 2 | * dm9000.c: Version 1.2 03/18/2003 |
| 3 | * |
| 4 | * A Davicom DM9000 ISA NIC fast Ethernet driver for Linux. |
| 5 | * Copyright (C) 1997 Sten Wang |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License |
| 9 | * as published by the Free Software Foundation; either version 2 |
| 10 | * of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * (C)Copyright 1997-1998 DAVICOM Semiconductor,Inc. All Rights Reserved. |
| 18 | * |
| 19 | * V0.11 06/20/2001 REG_0A bit3=1, default enable BP with DA match |
| 20 | * 06/22/2001 Support DM9801 progrmming |
| 21 | * E3: R25 = ((R24 + NF) & 0x00ff) | 0xf000 |
| 22 | * E4: R25 = ((R24 + NF) & 0x00ff) | 0xc200 |
| 23 | * R17 = (R17 & 0xfff0) | NF + 3 |
| 24 | * E5: R25 = ((R24 + NF - 3) & 0x00ff) | 0xc200 |
| 25 | * R17 = (R17 & 0xfff0) | NF |
| 26 | * |
| 27 | * v1.00 modify by simon 2001.9.5 |
| 28 | * change for kernel 2.4.x |
| 29 | * |
| 30 | * v1.1 11/09/2001 fix force mode bug |
| 31 | * |
| 32 | * v1.2 03/18/2003 Weilun Huang <weilun_huang@davicom.com.tw>: |
| 33 | * Fixed phy reset. |
| 34 | * Added tx/rx 32 bit mode. |
| 35 | * Cleaned up for kernel merge. |
| 36 | * |
| 37 | * 03/03/2004 Sascha Hauer <s.hauer@pengutronix.de> |
| 38 | * Port to 2.6 kernel |
| 39 | * |
| 40 | * 24-Sep-2004 Ben Dooks <ben@simtec.co.uk> |
| 41 | * Cleanup of code to remove ifdefs |
| 42 | * Allowed platform device data to influence access width |
| 43 | * Reformatting areas of code |
| 44 | * |
| 45 | * 17-Mar-2005 Sascha Hauer <s.hauer@pengutronix.de> |
| 46 | * * removed 2.4 style module parameters |
| 47 | * * removed removed unused stat counter and fixed |
| 48 | * net_device_stats |
| 49 | * * introduced tx_timeout function |
| 50 | * * reworked locking |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 51 | * |
| 52 | * 01-Jul-2005 Ben Dooks <ben@simtec.co.uk> |
| 53 | * * fixed spinlock call without pointer |
| 54 | * * ensure spinlock is initialised |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 55 | */ |
| 56 | |
| 57 | #include <linux/module.h> |
| 58 | #include <linux/ioport.h> |
| 59 | #include <linux/netdevice.h> |
| 60 | #include <linux/etherdevice.h> |
| 61 | #include <linux/init.h> |
| 62 | #include <linux/skbuff.h> |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 63 | #include <linux/spinlock.h> |
| 64 | #include <linux/crc32.h> |
| 65 | #include <linux/mii.h> |
| 66 | #include <linux/dm9000.h> |
| 67 | #include <linux/delay.h> |
Russell King | d052d1b | 2005-10-29 19:07:23 +0100 | [diff] [blame] | 68 | #include <linux/platform_device.h> |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 69 | |
| 70 | #include <asm/delay.h> |
| 71 | #include <asm/irq.h> |
| 72 | #include <asm/io.h> |
| 73 | |
| 74 | #include "dm9000.h" |
| 75 | |
| 76 | /* Board/System/Debug information/definition ---------------- */ |
| 77 | |
| 78 | #define DM9000_PHY 0x40 /* PHY address 0x01 */ |
| 79 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 80 | #define CARDNAME "dm9000" |
| 81 | #define PFX CARDNAME ": " |
| 82 | |
| 83 | #define DM9000_TIMER_WUT jiffies+(HZ*2) /* timer wakeup time : 2 second */ |
| 84 | |
| 85 | #define DM9000_DEBUG 0 |
| 86 | |
| 87 | #if DM9000_DEBUG > 2 |
| 88 | #define PRINTK3(args...) printk(CARDNAME ": " args) |
| 89 | #else |
| 90 | #define PRINTK3(args...) do { } while(0) |
| 91 | #endif |
| 92 | |
| 93 | #if DM9000_DEBUG > 1 |
| 94 | #define PRINTK2(args...) printk(CARDNAME ": " args) |
| 95 | #else |
| 96 | #define PRINTK2(args...) do { } while(0) |
| 97 | #endif |
| 98 | |
| 99 | #if DM9000_DEBUG > 0 |
| 100 | #define PRINTK1(args...) printk(CARDNAME ": " args) |
| 101 | #define PRINTK(args...) printk(CARDNAME ": " args) |
| 102 | #else |
| 103 | #define PRINTK1(args...) do { } while(0) |
| 104 | #define PRINTK(args...) printk(KERN_DEBUG args) |
| 105 | #endif |
| 106 | |
| 107 | /* |
| 108 | * Transmit timeout, default 5 seconds. |
| 109 | */ |
| 110 | static int watchdog = 5000; |
| 111 | module_param(watchdog, int, 0400); |
| 112 | MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds"); |
| 113 | |
| 114 | /* Structure/enum declaration ------------------------------- */ |
| 115 | typedef struct board_info { |
| 116 | |
| 117 | void __iomem *io_addr; /* Register I/O base address */ |
| 118 | void __iomem *io_data; /* Data I/O address */ |
| 119 | u16 irq; /* IRQ */ |
| 120 | |
| 121 | u16 tx_pkt_cnt; |
| 122 | u16 queue_pkt_len; |
| 123 | u16 queue_start_addr; |
| 124 | u16 dbug_cnt; |
| 125 | u8 io_mode; /* 0:word, 2:byte */ |
| 126 | u8 phy_addr; |
| 127 | |
| 128 | void (*inblk)(void __iomem *port, void *data, int length); |
| 129 | void (*outblk)(void __iomem *port, void *data, int length); |
| 130 | void (*dumpblk)(void __iomem *port, int length); |
| 131 | |
| 132 | struct resource *addr_res; /* resources found */ |
| 133 | struct resource *data_res; |
| 134 | struct resource *addr_req; /* resources requested */ |
| 135 | struct resource *data_req; |
| 136 | struct resource *irq_res; |
| 137 | |
| 138 | struct timer_list timer; |
| 139 | struct net_device_stats stats; |
| 140 | unsigned char srom[128]; |
| 141 | spinlock_t lock; |
| 142 | |
| 143 | struct mii_if_info mii; |
| 144 | u32 msg_enable; |
| 145 | } board_info_t; |
| 146 | |
| 147 | /* function declaration ------------------------------------- */ |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 148 | static int dm9000_probe(struct platform_device *); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 149 | static int dm9000_open(struct net_device *); |
| 150 | static int dm9000_start_xmit(struct sk_buff *, struct net_device *); |
| 151 | static int dm9000_stop(struct net_device *); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 152 | |
| 153 | |
| 154 | static void dm9000_timer(unsigned long); |
| 155 | static void dm9000_init_dm9000(struct net_device *); |
| 156 | |
| 157 | static struct net_device_stats *dm9000_get_stats(struct net_device *); |
| 158 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 159 | static irqreturn_t dm9000_interrupt(int, void *); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 160 | |
| 161 | static int dm9000_phy_read(struct net_device *dev, int phyaddr_unsused, int reg); |
| 162 | static void dm9000_phy_write(struct net_device *dev, int phyaddr_unused, int reg, |
| 163 | int value); |
| 164 | static u16 read_srom_word(board_info_t *, int); |
| 165 | static void dm9000_rx(struct net_device *); |
| 166 | static void dm9000_hash_table(struct net_device *); |
| 167 | |
| 168 | //#define DM9000_PROGRAM_EEPROM |
| 169 | #ifdef DM9000_PROGRAM_EEPROM |
| 170 | static void program_eeprom(board_info_t * db); |
| 171 | #endif |
| 172 | /* DM9000 network board routine ---------------------------- */ |
| 173 | |
| 174 | static void |
| 175 | dm9000_reset(board_info_t * db) |
| 176 | { |
| 177 | PRINTK1("dm9000x: resetting\n"); |
| 178 | /* RESET device */ |
| 179 | writeb(DM9000_NCR, db->io_addr); |
| 180 | udelay(200); |
| 181 | writeb(NCR_RST, db->io_data); |
| 182 | udelay(200); |
| 183 | } |
| 184 | |
| 185 | /* |
| 186 | * Read a byte from I/O port |
| 187 | */ |
| 188 | static u8 |
| 189 | ior(board_info_t * db, int reg) |
| 190 | { |
| 191 | writeb(reg, db->io_addr); |
| 192 | return readb(db->io_data); |
| 193 | } |
| 194 | |
| 195 | /* |
| 196 | * Write a byte to I/O port |
| 197 | */ |
| 198 | |
| 199 | static void |
| 200 | iow(board_info_t * db, int reg, int value) |
| 201 | { |
| 202 | writeb(reg, db->io_addr); |
| 203 | writeb(value, db->io_data); |
| 204 | } |
| 205 | |
| 206 | /* routines for sending block to chip */ |
| 207 | |
| 208 | static void dm9000_outblk_8bit(void __iomem *reg, void *data, int count) |
| 209 | { |
| 210 | writesb(reg, data, count); |
| 211 | } |
| 212 | |
| 213 | static void dm9000_outblk_16bit(void __iomem *reg, void *data, int count) |
| 214 | { |
| 215 | writesw(reg, data, (count+1) >> 1); |
| 216 | } |
| 217 | |
| 218 | static void dm9000_outblk_32bit(void __iomem *reg, void *data, int count) |
| 219 | { |
| 220 | writesl(reg, data, (count+3) >> 2); |
| 221 | } |
| 222 | |
| 223 | /* input block from chip to memory */ |
| 224 | |
| 225 | static void dm9000_inblk_8bit(void __iomem *reg, void *data, int count) |
| 226 | { |
Sascha Hauer | 5f6b551 | 2005-06-20 15:32:51 -0700 | [diff] [blame] | 227 | readsb(reg, data, count); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 228 | } |
| 229 | |
| 230 | |
| 231 | static void dm9000_inblk_16bit(void __iomem *reg, void *data, int count) |
| 232 | { |
| 233 | readsw(reg, data, (count+1) >> 1); |
| 234 | } |
| 235 | |
| 236 | static void dm9000_inblk_32bit(void __iomem *reg, void *data, int count) |
| 237 | { |
| 238 | readsl(reg, data, (count+3) >> 2); |
| 239 | } |
| 240 | |
| 241 | /* dump block from chip to null */ |
| 242 | |
| 243 | static void dm9000_dumpblk_8bit(void __iomem *reg, int count) |
| 244 | { |
| 245 | int i; |
| 246 | int tmp; |
| 247 | |
| 248 | for (i = 0; i < count; i++) |
| 249 | tmp = readb(reg); |
| 250 | } |
| 251 | |
| 252 | static void dm9000_dumpblk_16bit(void __iomem *reg, int count) |
| 253 | { |
| 254 | int i; |
| 255 | int tmp; |
| 256 | |
| 257 | count = (count + 1) >> 1; |
| 258 | |
| 259 | for (i = 0; i < count; i++) |
| 260 | tmp = readw(reg); |
| 261 | } |
| 262 | |
| 263 | static void dm9000_dumpblk_32bit(void __iomem *reg, int count) |
| 264 | { |
| 265 | int i; |
| 266 | int tmp; |
| 267 | |
| 268 | count = (count + 3) >> 2; |
| 269 | |
| 270 | for (i = 0; i < count; i++) |
| 271 | tmp = readl(reg); |
| 272 | } |
| 273 | |
| 274 | /* dm9000_set_io |
| 275 | * |
| 276 | * select the specified set of io routines to use with the |
| 277 | * device |
| 278 | */ |
| 279 | |
| 280 | static void dm9000_set_io(struct board_info *db, int byte_width) |
| 281 | { |
| 282 | /* use the size of the data resource to work out what IO |
| 283 | * routines we want to use |
| 284 | */ |
| 285 | |
| 286 | switch (byte_width) { |
| 287 | case 1: |
| 288 | db->dumpblk = dm9000_dumpblk_8bit; |
| 289 | db->outblk = dm9000_outblk_8bit; |
| 290 | db->inblk = dm9000_inblk_8bit; |
| 291 | break; |
| 292 | |
| 293 | case 2: |
| 294 | db->dumpblk = dm9000_dumpblk_16bit; |
| 295 | db->outblk = dm9000_outblk_16bit; |
| 296 | db->inblk = dm9000_inblk_16bit; |
| 297 | break; |
| 298 | |
| 299 | case 3: |
| 300 | printk(KERN_ERR PFX ": 3 byte IO, falling back to 16bit\n"); |
| 301 | db->dumpblk = dm9000_dumpblk_16bit; |
| 302 | db->outblk = dm9000_outblk_16bit; |
| 303 | db->inblk = dm9000_inblk_16bit; |
| 304 | break; |
| 305 | |
| 306 | case 4: |
| 307 | default: |
| 308 | db->dumpblk = dm9000_dumpblk_32bit; |
| 309 | db->outblk = dm9000_outblk_32bit; |
| 310 | db->inblk = dm9000_inblk_32bit; |
| 311 | break; |
| 312 | } |
| 313 | } |
| 314 | |
| 315 | |
| 316 | /* Our watchdog timed out. Called by the networking layer */ |
| 317 | static void dm9000_timeout(struct net_device *dev) |
| 318 | { |
| 319 | board_info_t *db = (board_info_t *) dev->priv; |
| 320 | u8 reg_save; |
| 321 | unsigned long flags; |
| 322 | |
| 323 | /* Save previous register address */ |
| 324 | reg_save = readb(db->io_addr); |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 325 | spin_lock_irqsave(&db->lock,flags); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 326 | |
| 327 | netif_stop_queue(dev); |
| 328 | dm9000_reset(db); |
| 329 | dm9000_init_dm9000(dev); |
| 330 | /* We can accept TX packets again */ |
| 331 | dev->trans_start = jiffies; |
| 332 | netif_wake_queue(dev); |
| 333 | |
| 334 | /* Restore previous register address */ |
| 335 | writeb(reg_save, db->io_addr); |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 336 | spin_unlock_irqrestore(&db->lock,flags); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 337 | } |
| 338 | |
Kevin Hao | 2fd0e33 | 2006-08-14 23:00:15 -0700 | [diff] [blame] | 339 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 340 | /* |
| 341 | *Used by netconsole |
| 342 | */ |
| 343 | static void dm9000_poll_controller(struct net_device *dev) |
| 344 | { |
| 345 | disable_irq(dev->irq); |
Al Viro | 2843114 | 2006-10-08 15:00:12 +0100 | [diff] [blame] | 346 | dm9000_interrupt(dev->irq,dev); |
Kevin Hao | 2fd0e33 | 2006-08-14 23:00:15 -0700 | [diff] [blame] | 347 | enable_irq(dev->irq); |
| 348 | } |
| 349 | #endif |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 350 | |
| 351 | /* dm9000_release_board |
| 352 | * |
| 353 | * release a board, and any mapped resources |
| 354 | */ |
| 355 | |
| 356 | static void |
| 357 | dm9000_release_board(struct platform_device *pdev, struct board_info *db) |
| 358 | { |
| 359 | if (db->data_res == NULL) { |
| 360 | if (db->addr_res != NULL) |
| 361 | release_mem_region((unsigned long)db->io_addr, 4); |
| 362 | return; |
| 363 | } |
| 364 | |
| 365 | /* unmap our resources */ |
| 366 | |
| 367 | iounmap(db->io_addr); |
| 368 | iounmap(db->io_data); |
| 369 | |
| 370 | /* release the resources */ |
| 371 | |
| 372 | if (db->data_req != NULL) { |
| 373 | release_resource(db->data_req); |
| 374 | kfree(db->data_req); |
| 375 | } |
| 376 | |
Dirk Opfer | 5198548 | 2006-09-06 19:53:32 +0200 | [diff] [blame] | 377 | if (db->addr_req != NULL) { |
| 378 | release_resource(db->addr_req); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 379 | kfree(db->addr_req); |
| 380 | } |
| 381 | } |
| 382 | |
| 383 | #define res_size(_r) (((_r)->end - (_r)->start) + 1) |
| 384 | |
| 385 | /* |
| 386 | * Search DM9000 board, allocate space and register it |
| 387 | */ |
| 388 | static int |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 389 | dm9000_probe(struct platform_device *pdev) |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 390 | { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 391 | struct dm9000_plat_data *pdata = pdev->dev.platform_data; |
| 392 | struct board_info *db; /* Point a board information structure */ |
| 393 | struct net_device *ndev; |
| 394 | unsigned long base; |
| 395 | int ret = 0; |
| 396 | int iosize; |
| 397 | int i; |
| 398 | u32 id_val; |
| 399 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 400 | /* Init network device */ |
| 401 | ndev = alloc_etherdev(sizeof (struct board_info)); |
| 402 | if (!ndev) { |
| 403 | printk("%s: could not allocate device.\n", CARDNAME); |
| 404 | return -ENOMEM; |
| 405 | } |
| 406 | |
| 407 | SET_MODULE_OWNER(ndev); |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 408 | SET_NETDEV_DEV(ndev, &pdev->dev); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 409 | |
| 410 | PRINTK2("dm9000_probe()"); |
| 411 | |
| 412 | /* setup board info structure */ |
| 413 | db = (struct board_info *) ndev->priv; |
| 414 | memset(db, 0, sizeof (*db)); |
| 415 | |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 416 | spin_lock_init(&db->lock); |
| 417 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 418 | if (pdev->num_resources < 2) { |
| 419 | ret = -ENODEV; |
| 420 | goto out; |
Ben Dooks | b4ed03f | 2006-06-13 23:47:19 +0100 | [diff] [blame] | 421 | } else if (pdev->num_resources == 2) { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 422 | base = pdev->resource[0].start; |
| 423 | |
| 424 | if (!request_mem_region(base, 4, ndev->name)) { |
| 425 | ret = -EBUSY; |
| 426 | goto out; |
| 427 | } |
| 428 | |
| 429 | ndev->base_addr = base; |
| 430 | ndev->irq = pdev->resource[1].start; |
Ben Dooks | b4ed03f | 2006-06-13 23:47:19 +0100 | [diff] [blame] | 431 | db->io_addr = (void __iomem *)base; |
| 432 | db->io_data = (void __iomem *)(base + 4); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 433 | |
Ben Dooks | b4ed03f | 2006-06-13 23:47:19 +0100 | [diff] [blame] | 434 | } else { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 435 | db->addr_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 436 | db->data_res = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
| 437 | db->irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| 438 | |
Ben Dooks | b4ed03f | 2006-06-13 23:47:19 +0100 | [diff] [blame] | 439 | if (db->addr_res == NULL || db->data_res == NULL || |
| 440 | db->irq_res == NULL) { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 441 | printk(KERN_ERR PFX "insufficient resources\n"); |
| 442 | ret = -ENOENT; |
| 443 | goto out; |
| 444 | } |
| 445 | |
| 446 | i = res_size(db->addr_res); |
| 447 | db->addr_req = request_mem_region(db->addr_res->start, i, |
| 448 | pdev->name); |
| 449 | |
| 450 | if (db->addr_req == NULL) { |
| 451 | printk(KERN_ERR PFX "cannot claim address reg area\n"); |
| 452 | ret = -EIO; |
| 453 | goto out; |
| 454 | } |
| 455 | |
| 456 | db->io_addr = ioremap(db->addr_res->start, i); |
| 457 | |
| 458 | if (db->io_addr == NULL) { |
| 459 | printk(KERN_ERR "failed to ioremap address reg\n"); |
| 460 | ret = -EINVAL; |
| 461 | goto out; |
| 462 | } |
| 463 | |
| 464 | iosize = res_size(db->data_res); |
| 465 | db->data_req = request_mem_region(db->data_res->start, iosize, |
| 466 | pdev->name); |
| 467 | |
| 468 | if (db->data_req == NULL) { |
| 469 | printk(KERN_ERR PFX "cannot claim data reg area\n"); |
| 470 | ret = -EIO; |
| 471 | goto out; |
| 472 | } |
| 473 | |
| 474 | db->io_data = ioremap(db->data_res->start, iosize); |
| 475 | |
| 476 | if (db->io_data == NULL) { |
| 477 | printk(KERN_ERR "failed to ioremap data reg\n"); |
| 478 | ret = -EINVAL; |
| 479 | goto out; |
| 480 | } |
| 481 | |
| 482 | /* fill in parameters for net-dev structure */ |
| 483 | |
| 484 | ndev->base_addr = (unsigned long)db->io_addr; |
| 485 | ndev->irq = db->irq_res->start; |
| 486 | |
| 487 | /* ensure at least we have a default set of IO routines */ |
| 488 | dm9000_set_io(db, iosize); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 489 | } |
| 490 | |
| 491 | /* check to see if anything is being over-ridden */ |
| 492 | if (pdata != NULL) { |
| 493 | /* check to see if the driver wants to over-ride the |
| 494 | * default IO width */ |
| 495 | |
| 496 | if (pdata->flags & DM9000_PLATF_8BITONLY) |
| 497 | dm9000_set_io(db, 1); |
| 498 | |
| 499 | if (pdata->flags & DM9000_PLATF_16BITONLY) |
| 500 | dm9000_set_io(db, 2); |
| 501 | |
| 502 | if (pdata->flags & DM9000_PLATF_32BITONLY) |
| 503 | dm9000_set_io(db, 4); |
| 504 | |
| 505 | /* check to see if there are any IO routine |
| 506 | * over-rides */ |
| 507 | |
| 508 | if (pdata->inblk != NULL) |
| 509 | db->inblk = pdata->inblk; |
| 510 | |
| 511 | if (pdata->outblk != NULL) |
| 512 | db->outblk = pdata->outblk; |
| 513 | |
| 514 | if (pdata->dumpblk != NULL) |
| 515 | db->dumpblk = pdata->dumpblk; |
| 516 | } |
| 517 | |
| 518 | dm9000_reset(db); |
| 519 | |
| 520 | /* try two times, DM9000 sometimes gets the first read wrong */ |
| 521 | for (i = 0; i < 2; i++) { |
| 522 | id_val = ior(db, DM9000_VIDL); |
| 523 | id_val |= (u32)ior(db, DM9000_VIDH) << 8; |
| 524 | id_val |= (u32)ior(db, DM9000_PIDL) << 16; |
| 525 | id_val |= (u32)ior(db, DM9000_PIDH) << 24; |
| 526 | |
| 527 | if (id_val == DM9000_ID) |
| 528 | break; |
| 529 | printk("%s: read wrong id 0x%08x\n", CARDNAME, id_val); |
| 530 | } |
| 531 | |
| 532 | if (id_val != DM9000_ID) { |
| 533 | printk("%s: wrong id: 0x%08x\n", CARDNAME, id_val); |
| 534 | goto release; |
| 535 | } |
| 536 | |
| 537 | /* from this point we assume that we have found a DM9000 */ |
| 538 | |
| 539 | /* driver system function */ |
| 540 | ether_setup(ndev); |
| 541 | |
| 542 | ndev->open = &dm9000_open; |
| 543 | ndev->hard_start_xmit = &dm9000_start_xmit; |
| 544 | ndev->tx_timeout = &dm9000_timeout; |
| 545 | ndev->watchdog_timeo = msecs_to_jiffies(watchdog); |
| 546 | ndev->stop = &dm9000_stop; |
| 547 | ndev->get_stats = &dm9000_get_stats; |
| 548 | ndev->set_multicast_list = &dm9000_hash_table; |
Kevin Hao | 2fd0e33 | 2006-08-14 23:00:15 -0700 | [diff] [blame] | 549 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 550 | ndev->poll_controller = &dm9000_poll_controller; |
| 551 | #endif |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 552 | |
| 553 | #ifdef DM9000_PROGRAM_EEPROM |
| 554 | program_eeprom(db); |
| 555 | #endif |
| 556 | db->msg_enable = NETIF_MSG_LINK; |
| 557 | db->mii.phy_id_mask = 0x1f; |
| 558 | db->mii.reg_num_mask = 0x1f; |
| 559 | db->mii.force_media = 0; |
| 560 | db->mii.full_duplex = 0; |
| 561 | db->mii.dev = ndev; |
| 562 | db->mii.mdio_read = dm9000_phy_read; |
| 563 | db->mii.mdio_write = dm9000_phy_write; |
| 564 | |
| 565 | /* Read SROM content */ |
| 566 | for (i = 0; i < 64; i++) |
| 567 | ((u16 *) db->srom)[i] = read_srom_word(db, i); |
| 568 | |
| 569 | /* Set Node Address */ |
| 570 | for (i = 0; i < 6; i++) |
| 571 | ndev->dev_addr[i] = db->srom[i]; |
| 572 | |
Ben Dooks | 5b55dda | 2006-06-13 23:50:15 +0100 | [diff] [blame] | 573 | if (!is_valid_ether_addr(ndev->dev_addr)) { |
| 574 | /* try reading from mac */ |
| 575 | |
| 576 | for (i = 0; i < 6; i++) |
| 577 | ndev->dev_addr[i] = ior(db, i+DM9000_PAR); |
| 578 | } |
| 579 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 580 | if (!is_valid_ether_addr(ndev->dev_addr)) |
| 581 | printk("%s: Invalid ethernet MAC address. Please " |
| 582 | "set using ifconfig\n", ndev->name); |
| 583 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 584 | platform_set_drvdata(pdev, ndev); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 585 | ret = register_netdev(ndev); |
| 586 | |
| 587 | if (ret == 0) { |
| 588 | printk("%s: dm9000 at %p,%p IRQ %d MAC: ", |
| 589 | ndev->name, db->io_addr, db->io_data, ndev->irq); |
| 590 | for (i = 0; i < 5; i++) |
| 591 | printk("%02x:", ndev->dev_addr[i]); |
| 592 | printk("%02x\n", ndev->dev_addr[5]); |
| 593 | } |
| 594 | return 0; |
| 595 | |
| 596 | release: |
| 597 | out: |
| 598 | printk("%s: not found (%d).\n", CARDNAME, ret); |
| 599 | |
| 600 | dm9000_release_board(pdev, db); |
Ben Dooks | 9fd9f9b | 2007-05-07 11:13:25 +0000 | [diff] [blame] | 601 | free_netdev(ndev); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 602 | |
| 603 | return ret; |
| 604 | } |
| 605 | |
| 606 | /* |
| 607 | * Open the interface. |
| 608 | * The interface is opened whenever "ifconfig" actives it. |
| 609 | */ |
| 610 | static int |
| 611 | dm9000_open(struct net_device *dev) |
| 612 | { |
| 613 | board_info_t *db = (board_info_t *) dev->priv; |
| 614 | |
| 615 | PRINTK2("entering dm9000_open\n"); |
| 616 | |
Thomas Gleixner | 1fb9df5 | 2006-07-01 19:29:39 -0700 | [diff] [blame] | 617 | if (request_irq(dev->irq, &dm9000_interrupt, IRQF_SHARED, dev->name, dev)) |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 618 | return -EAGAIN; |
| 619 | |
| 620 | /* Initialize DM9000 board */ |
| 621 | dm9000_reset(db); |
| 622 | dm9000_init_dm9000(dev); |
| 623 | |
| 624 | /* Init driver variable */ |
| 625 | db->dbug_cnt = 0; |
| 626 | |
| 627 | /* set and active a timer process */ |
| 628 | init_timer(&db->timer); |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 629 | db->timer.expires = DM9000_TIMER_WUT; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 630 | db->timer.data = (unsigned long) dev; |
| 631 | db->timer.function = &dm9000_timer; |
| 632 | add_timer(&db->timer); |
| 633 | |
| 634 | mii_check_media(&db->mii, netif_msg_link(db), 1); |
| 635 | netif_start_queue(dev); |
| 636 | |
| 637 | return 0; |
| 638 | } |
| 639 | |
| 640 | /* |
| 641 | * Initilize dm9000 board |
| 642 | */ |
| 643 | static void |
| 644 | dm9000_init_dm9000(struct net_device *dev) |
| 645 | { |
| 646 | board_info_t *db = (board_info_t *) dev->priv; |
| 647 | |
| 648 | PRINTK1("entering %s\n",__FUNCTION__); |
| 649 | |
| 650 | /* I/O mode */ |
| 651 | db->io_mode = ior(db, DM9000_ISR) >> 6; /* ISR bit7:6 keeps I/O mode */ |
| 652 | |
| 653 | /* GPIO0 on pre-activate PHY */ |
| 654 | iow(db, DM9000_GPR, 0); /* REG_1F bit0 activate phyxcer */ |
| 655 | iow(db, DM9000_GPCR, GPCR_GEP_CNTL); /* Let GPIO0 output */ |
| 656 | iow(db, DM9000_GPR, 0); /* Enable PHY */ |
| 657 | |
| 658 | /* Program operating register */ |
| 659 | iow(db, DM9000_TCR, 0); /* TX Polling clear */ |
| 660 | iow(db, DM9000_BPTR, 0x3f); /* Less 3Kb, 200us */ |
| 661 | iow(db, DM9000_FCR, 0xff); /* Flow Control */ |
| 662 | iow(db, DM9000_SMCR, 0); /* Special Mode */ |
| 663 | /* clear TX status */ |
| 664 | iow(db, DM9000_NSR, NSR_WAKEST | NSR_TX2END | NSR_TX1END); |
| 665 | iow(db, DM9000_ISR, ISR_CLR_STATUS); /* Clear interrupt status */ |
| 666 | |
| 667 | /* Set address filter table */ |
| 668 | dm9000_hash_table(dev); |
| 669 | |
| 670 | /* Activate DM9000 */ |
| 671 | iow(db, DM9000_RCR, RCR_DIS_LONG | RCR_DIS_CRC | RCR_RXEN); |
| 672 | /* Enable TX/RX interrupt mask */ |
| 673 | iow(db, DM9000_IMR, IMR_PAR | IMR_PTM | IMR_PRM); |
| 674 | |
| 675 | /* Init Driver variable */ |
| 676 | db->tx_pkt_cnt = 0; |
| 677 | db->queue_pkt_len = 0; |
| 678 | dev->trans_start = 0; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 679 | } |
| 680 | |
| 681 | /* |
| 682 | * Hardware start transmission. |
| 683 | * Send a packet to media from the upper layer. |
| 684 | */ |
| 685 | static int |
| 686 | dm9000_start_xmit(struct sk_buff *skb, struct net_device *dev) |
| 687 | { |
| 688 | board_info_t *db = (board_info_t *) dev->priv; |
| 689 | |
| 690 | PRINTK3("dm9000_start_xmit\n"); |
| 691 | |
| 692 | if (db->tx_pkt_cnt > 1) |
| 693 | return 1; |
| 694 | |
| 695 | netif_stop_queue(dev); |
| 696 | |
| 697 | /* Disable all interrupts */ |
| 698 | iow(db, DM9000_IMR, IMR_PAR); |
| 699 | |
| 700 | /* Move data to DM9000 TX RAM */ |
| 701 | writeb(DM9000_MWCMD, db->io_addr); |
| 702 | |
| 703 | (db->outblk)(db->io_data, skb->data, skb->len); |
| 704 | db->stats.tx_bytes += skb->len; |
| 705 | |
| 706 | /* TX control: First packet immediately send, second packet queue */ |
| 707 | if (db->tx_pkt_cnt == 0) { |
| 708 | |
| 709 | /* First Packet */ |
| 710 | db->tx_pkt_cnt++; |
| 711 | |
| 712 | /* Set TX length to DM9000 */ |
| 713 | iow(db, DM9000_TXPLL, skb->len & 0xff); |
| 714 | iow(db, DM9000_TXPLH, (skb->len >> 8) & 0xff); |
| 715 | |
| 716 | /* Issue TX polling command */ |
| 717 | iow(db, DM9000_TCR, TCR_TXREQ); /* Cleared after TX complete */ |
| 718 | |
| 719 | dev->trans_start = jiffies; /* save the time stamp */ |
| 720 | |
| 721 | } else { |
| 722 | /* Second packet */ |
| 723 | db->tx_pkt_cnt++; |
| 724 | db->queue_pkt_len = skb->len; |
| 725 | } |
| 726 | |
| 727 | /* free this SKB */ |
| 728 | dev_kfree_skb(skb); |
| 729 | |
| 730 | /* Re-enable resource check */ |
| 731 | if (db->tx_pkt_cnt == 1) |
| 732 | netif_wake_queue(dev); |
| 733 | |
| 734 | /* Re-enable interrupt */ |
| 735 | iow(db, DM9000_IMR, IMR_PAR | IMR_PTM | IMR_PRM); |
| 736 | |
| 737 | return 0; |
| 738 | } |
| 739 | |
| 740 | static void |
| 741 | dm9000_shutdown(struct net_device *dev) |
| 742 | { |
| 743 | board_info_t *db = (board_info_t *) dev->priv; |
| 744 | |
| 745 | /* RESET device */ |
| 746 | dm9000_phy_write(dev, 0, MII_BMCR, BMCR_RESET); /* PHY RESET */ |
| 747 | iow(db, DM9000_GPR, 0x01); /* Power-Down PHY */ |
| 748 | iow(db, DM9000_IMR, IMR_PAR); /* Disable all interrupt */ |
| 749 | iow(db, DM9000_RCR, 0x00); /* Disable RX */ |
| 750 | } |
| 751 | |
| 752 | /* |
| 753 | * Stop the interface. |
| 754 | * The interface is stopped when it is brought. |
| 755 | */ |
| 756 | static int |
| 757 | dm9000_stop(struct net_device *ndev) |
| 758 | { |
| 759 | board_info_t *db = (board_info_t *) ndev->priv; |
| 760 | |
| 761 | PRINTK1("entering %s\n",__FUNCTION__); |
| 762 | |
| 763 | /* deleted timer */ |
| 764 | del_timer(&db->timer); |
| 765 | |
| 766 | netif_stop_queue(ndev); |
| 767 | netif_carrier_off(ndev); |
| 768 | |
| 769 | /* free interrupt */ |
| 770 | free_irq(ndev->irq, ndev); |
| 771 | |
| 772 | dm9000_shutdown(ndev); |
| 773 | |
| 774 | return 0; |
| 775 | } |
| 776 | |
| 777 | /* |
| 778 | * DM9000 interrupt handler |
| 779 | * receive the packet to upper layer, free the transmitted packet |
| 780 | */ |
| 781 | |
Ben Dooks | 5d22a31 | 2006-06-14 00:09:17 +0100 | [diff] [blame] | 782 | static void |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 783 | dm9000_tx_done(struct net_device *dev, board_info_t * db) |
| 784 | { |
| 785 | int tx_status = ior(db, DM9000_NSR); /* Got TX status */ |
| 786 | |
| 787 | if (tx_status & (NSR_TX2END | NSR_TX1END)) { |
| 788 | /* One packet sent complete */ |
| 789 | db->tx_pkt_cnt--; |
| 790 | db->stats.tx_packets++; |
| 791 | |
| 792 | /* Queue packet check & send */ |
| 793 | if (db->tx_pkt_cnt > 0) { |
| 794 | iow(db, DM9000_TXPLL, db->queue_pkt_len & 0xff); |
| 795 | iow(db, DM9000_TXPLH, (db->queue_pkt_len >> 8) & 0xff); |
| 796 | iow(db, DM9000_TCR, TCR_TXREQ); |
| 797 | dev->trans_start = jiffies; |
| 798 | } |
| 799 | netif_wake_queue(dev); |
| 800 | } |
| 801 | } |
| 802 | |
| 803 | static irqreturn_t |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 804 | dm9000_interrupt(int irq, void *dev_id) |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 805 | { |
| 806 | struct net_device *dev = dev_id; |
| 807 | board_info_t *db; |
| 808 | int int_status; |
| 809 | u8 reg_save; |
| 810 | |
| 811 | PRINTK3("entering %s\n",__FUNCTION__); |
| 812 | |
| 813 | if (!dev) { |
| 814 | PRINTK1("dm9000_interrupt() without DEVICE arg\n"); |
| 815 | return IRQ_HANDLED; |
| 816 | } |
| 817 | |
| 818 | /* A real interrupt coming */ |
| 819 | db = (board_info_t *) dev->priv; |
| 820 | spin_lock(&db->lock); |
| 821 | |
| 822 | /* Save previous register address */ |
| 823 | reg_save = readb(db->io_addr); |
| 824 | |
| 825 | /* Disable all interrupts */ |
| 826 | iow(db, DM9000_IMR, IMR_PAR); |
| 827 | |
| 828 | /* Got DM9000 interrupt status */ |
| 829 | int_status = ior(db, DM9000_ISR); /* Got ISR */ |
| 830 | iow(db, DM9000_ISR, int_status); /* Clear ISR status */ |
| 831 | |
| 832 | /* Received the coming packet */ |
| 833 | if (int_status & ISR_PRS) |
| 834 | dm9000_rx(dev); |
| 835 | |
| 836 | /* Trnasmit Interrupt check */ |
| 837 | if (int_status & ISR_PTS) |
| 838 | dm9000_tx_done(dev, db); |
| 839 | |
| 840 | /* Re-enable interrupt mask */ |
| 841 | iow(db, DM9000_IMR, IMR_PAR | IMR_PTM | IMR_PRM); |
| 842 | |
| 843 | /* Restore previous register address */ |
| 844 | writeb(reg_save, db->io_addr); |
| 845 | |
| 846 | spin_unlock(&db->lock); |
| 847 | |
| 848 | return IRQ_HANDLED; |
| 849 | } |
| 850 | |
| 851 | /* |
| 852 | * Get statistics from driver. |
| 853 | */ |
| 854 | static struct net_device_stats * |
| 855 | dm9000_get_stats(struct net_device *dev) |
| 856 | { |
| 857 | board_info_t *db = (board_info_t *) dev->priv; |
| 858 | return &db->stats; |
| 859 | } |
| 860 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 861 | |
| 862 | /* |
| 863 | * A periodic timer routine |
| 864 | * Dynamic media sense, allocated Rx buffer... |
| 865 | */ |
| 866 | static void |
| 867 | dm9000_timer(unsigned long data) |
| 868 | { |
| 869 | struct net_device *dev = (struct net_device *) data; |
| 870 | board_info_t *db = (board_info_t *) dev->priv; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 871 | |
| 872 | PRINTK3("dm9000_timer()\n"); |
| 873 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 874 | mii_check_media(&db->mii, netif_msg_link(db), 0); |
| 875 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 876 | /* Set timer again */ |
| 877 | db->timer.expires = DM9000_TIMER_WUT; |
| 878 | add_timer(&db->timer); |
| 879 | } |
| 880 | |
| 881 | struct dm9000_rxhdr { |
| 882 | u16 RxStatus; |
| 883 | u16 RxLen; |
| 884 | } __attribute__((__packed__)); |
| 885 | |
| 886 | /* |
| 887 | * Received a packet and pass to upper layer |
| 888 | */ |
| 889 | static void |
| 890 | dm9000_rx(struct net_device *dev) |
| 891 | { |
| 892 | board_info_t *db = (board_info_t *) dev->priv; |
| 893 | struct dm9000_rxhdr rxhdr; |
| 894 | struct sk_buff *skb; |
| 895 | u8 rxbyte, *rdptr; |
Richard Knutsson | 6478fac | 2007-05-01 18:43:27 +0200 | [diff] [blame] | 896 | bool GoodPacket; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 897 | int RxLen; |
| 898 | |
| 899 | /* Check packet ready or not */ |
| 900 | do { |
| 901 | ior(db, DM9000_MRCMDX); /* Dummy read */ |
| 902 | |
| 903 | /* Get most updated data */ |
| 904 | rxbyte = readb(db->io_data); |
| 905 | |
| 906 | /* Status check: this byte must be 0 or 1 */ |
| 907 | if (rxbyte > DM9000_PKT_RDY) { |
| 908 | printk("status check failed: %d\n", rxbyte); |
| 909 | iow(db, DM9000_RCR, 0x00); /* Stop Device */ |
| 910 | iow(db, DM9000_ISR, IMR_PAR); /* Stop INT request */ |
| 911 | return; |
| 912 | } |
| 913 | |
| 914 | if (rxbyte != DM9000_PKT_RDY) |
| 915 | return; |
| 916 | |
| 917 | /* A packet ready now & Get status/length */ |
Richard Knutsson | 6478fac | 2007-05-01 18:43:27 +0200 | [diff] [blame] | 918 | GoodPacket = true; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 919 | writeb(DM9000_MRCMD, db->io_addr); |
| 920 | |
| 921 | (db->inblk)(db->io_data, &rxhdr, sizeof(rxhdr)); |
| 922 | |
| 923 | RxLen = rxhdr.RxLen; |
| 924 | |
| 925 | /* Packet Status check */ |
| 926 | if (RxLen < 0x40) { |
Richard Knutsson | 6478fac | 2007-05-01 18:43:27 +0200 | [diff] [blame] | 927 | GoodPacket = false; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 928 | PRINTK1("Bad Packet received (runt)\n"); |
| 929 | } |
| 930 | |
| 931 | if (RxLen > DM9000_PKT_MAX) { |
| 932 | PRINTK1("RST: RX Len:%x\n", RxLen); |
| 933 | } |
| 934 | |
| 935 | if (rxhdr.RxStatus & 0xbf00) { |
Richard Knutsson | 6478fac | 2007-05-01 18:43:27 +0200 | [diff] [blame] | 936 | GoodPacket = false; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 937 | if (rxhdr.RxStatus & 0x100) { |
| 938 | PRINTK1("fifo error\n"); |
| 939 | db->stats.rx_fifo_errors++; |
| 940 | } |
| 941 | if (rxhdr.RxStatus & 0x200) { |
| 942 | PRINTK1("crc error\n"); |
| 943 | db->stats.rx_crc_errors++; |
| 944 | } |
| 945 | if (rxhdr.RxStatus & 0x8000) { |
| 946 | PRINTK1("length error\n"); |
| 947 | db->stats.rx_length_errors++; |
| 948 | } |
| 949 | } |
| 950 | |
| 951 | /* Move data from DM9000 */ |
| 952 | if (GoodPacket |
| 953 | && ((skb = dev_alloc_skb(RxLen + 4)) != NULL)) { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 954 | skb_reserve(skb, 2); |
| 955 | rdptr = (u8 *) skb_put(skb, RxLen - 4); |
| 956 | |
| 957 | /* Read received packet from RX SRAM */ |
| 958 | |
| 959 | (db->inblk)(db->io_data, rdptr, RxLen); |
| 960 | db->stats.rx_bytes += RxLen; |
| 961 | |
| 962 | /* Pass to upper layer */ |
| 963 | skb->protocol = eth_type_trans(skb, dev); |
| 964 | netif_rx(skb); |
| 965 | db->stats.rx_packets++; |
| 966 | |
| 967 | } else { |
| 968 | /* need to dump the packet's data */ |
| 969 | |
| 970 | (db->dumpblk)(db->io_data, RxLen); |
| 971 | } |
| 972 | } while (rxbyte == DM9000_PKT_RDY); |
| 973 | } |
| 974 | |
| 975 | /* |
| 976 | * Read a word data from SROM |
| 977 | */ |
| 978 | static u16 |
| 979 | read_srom_word(board_info_t * db, int offset) |
| 980 | { |
| 981 | iow(db, DM9000_EPAR, offset); |
| 982 | iow(db, DM9000_EPCR, EPCR_ERPRR); |
| 983 | mdelay(8); /* according to the datasheet 200us should be enough, |
| 984 | but it doesn't work */ |
| 985 | iow(db, DM9000_EPCR, 0x0); |
| 986 | return (ior(db, DM9000_EPDRL) + (ior(db, DM9000_EPDRH) << 8)); |
| 987 | } |
| 988 | |
| 989 | #ifdef DM9000_PROGRAM_EEPROM |
| 990 | /* |
| 991 | * Write a word data to SROM |
| 992 | */ |
| 993 | static void |
| 994 | write_srom_word(board_info_t * db, int offset, u16 val) |
| 995 | { |
| 996 | iow(db, DM9000_EPAR, offset); |
| 997 | iow(db, DM9000_EPDRH, ((val >> 8) & 0xff)); |
| 998 | iow(db, DM9000_EPDRL, (val & 0xff)); |
| 999 | iow(db, DM9000_EPCR, EPCR_WEP | EPCR_ERPRW); |
| 1000 | mdelay(8); /* same shit */ |
| 1001 | iow(db, DM9000_EPCR, 0); |
| 1002 | } |
| 1003 | |
| 1004 | /* |
| 1005 | * Only for development: |
| 1006 | * Here we write static data to the eeprom in case |
| 1007 | * we don't have valid content on a new board |
| 1008 | */ |
| 1009 | static void |
| 1010 | program_eeprom(board_info_t * db) |
| 1011 | { |
| 1012 | u16 eeprom[] = { 0x0c00, 0x007f, 0x1300, /* MAC Address */ |
| 1013 | 0x0000, /* Autoload: accept nothing */ |
| 1014 | 0x0a46, 0x9000, /* Vendor / Product ID */ |
| 1015 | 0x0000, /* pin control */ |
| 1016 | 0x0000, |
| 1017 | }; /* Wake-up mode control */ |
| 1018 | int i; |
| 1019 | for (i = 0; i < 8; i++) |
| 1020 | write_srom_word(db, i, eeprom[i]); |
| 1021 | } |
| 1022 | #endif |
| 1023 | |
| 1024 | |
| 1025 | /* |
| 1026 | * Calculate the CRC valude of the Rx packet |
| 1027 | * flag = 1 : return the reverse CRC (for the received packet CRC) |
| 1028 | * 0 : return the normal CRC (for Hash Table index) |
| 1029 | */ |
| 1030 | |
| 1031 | static unsigned long |
| 1032 | cal_CRC(unsigned char *Data, unsigned int Len, u8 flag) |
| 1033 | { |
| 1034 | |
| 1035 | u32 crc = ether_crc_le(Len, Data); |
| 1036 | |
| 1037 | if (flag) |
| 1038 | return ~crc; |
| 1039 | |
| 1040 | return crc; |
| 1041 | } |
| 1042 | |
| 1043 | /* |
| 1044 | * Set DM9000 multicast address |
| 1045 | */ |
| 1046 | static void |
| 1047 | dm9000_hash_table(struct net_device *dev) |
| 1048 | { |
| 1049 | board_info_t *db = (board_info_t *) dev->priv; |
| 1050 | struct dev_mc_list *mcptr = dev->mc_list; |
| 1051 | int mc_cnt = dev->mc_count; |
| 1052 | u32 hash_val; |
| 1053 | u16 i, oft, hash_table[4]; |
| 1054 | unsigned long flags; |
| 1055 | |
| 1056 | PRINTK2("dm9000_hash_table()\n"); |
| 1057 | |
| 1058 | spin_lock_irqsave(&db->lock,flags); |
| 1059 | |
| 1060 | for (i = 0, oft = 0x10; i < 6; i++, oft++) |
| 1061 | iow(db, oft, dev->dev_addr[i]); |
| 1062 | |
| 1063 | /* Clear Hash Table */ |
| 1064 | for (i = 0; i < 4; i++) |
| 1065 | hash_table[i] = 0x0; |
| 1066 | |
| 1067 | /* broadcast address */ |
| 1068 | hash_table[3] = 0x8000; |
| 1069 | |
| 1070 | /* the multicast address in Hash Table : 64 bits */ |
| 1071 | for (i = 0; i < mc_cnt; i++, mcptr = mcptr->next) { |
| 1072 | hash_val = cal_CRC((char *) mcptr->dmi_addr, 6, 0) & 0x3f; |
| 1073 | hash_table[hash_val / 16] |= (u16) 1 << (hash_val % 16); |
| 1074 | } |
| 1075 | |
| 1076 | /* Write the hash table to MAC MD table */ |
| 1077 | for (i = 0, oft = 0x16; i < 4; i++) { |
| 1078 | iow(db, oft++, hash_table[i] & 0xff); |
| 1079 | iow(db, oft++, (hash_table[i] >> 8) & 0xff); |
| 1080 | } |
| 1081 | |
| 1082 | spin_unlock_irqrestore(&db->lock,flags); |
| 1083 | } |
| 1084 | |
| 1085 | |
| 1086 | /* |
| 1087 | * Read a word from phyxcer |
| 1088 | */ |
| 1089 | static int |
| 1090 | dm9000_phy_read(struct net_device *dev, int phy_reg_unused, int reg) |
| 1091 | { |
| 1092 | board_info_t *db = (board_info_t *) dev->priv; |
| 1093 | unsigned long flags; |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 1094 | unsigned int reg_save; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1095 | int ret; |
| 1096 | |
| 1097 | spin_lock_irqsave(&db->lock,flags); |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 1098 | |
| 1099 | /* Save previous register address */ |
| 1100 | reg_save = readb(db->io_addr); |
| 1101 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1102 | /* Fill the phyxcer register into REG_0C */ |
| 1103 | iow(db, DM9000_EPAR, DM9000_PHY | reg); |
| 1104 | |
| 1105 | iow(db, DM9000_EPCR, 0xc); /* Issue phyxcer read command */ |
| 1106 | udelay(100); /* Wait read complete */ |
| 1107 | iow(db, DM9000_EPCR, 0x0); /* Clear phyxcer read command */ |
| 1108 | |
| 1109 | /* The read data keeps on REG_0D & REG_0E */ |
| 1110 | ret = (ior(db, DM9000_EPDRH) << 8) | ior(db, DM9000_EPDRL); |
| 1111 | |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 1112 | /* restore the previous address */ |
| 1113 | writeb(reg_save, db->io_addr); |
| 1114 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1115 | spin_unlock_irqrestore(&db->lock,flags); |
| 1116 | |
| 1117 | return ret; |
| 1118 | } |
| 1119 | |
| 1120 | /* |
| 1121 | * Write a word to phyxcer |
| 1122 | */ |
| 1123 | static void |
| 1124 | dm9000_phy_write(struct net_device *dev, int phyaddr_unused, int reg, int value) |
| 1125 | { |
| 1126 | board_info_t *db = (board_info_t *) dev->priv; |
| 1127 | unsigned long flags; |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 1128 | unsigned long reg_save; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1129 | |
| 1130 | spin_lock_irqsave(&db->lock,flags); |
| 1131 | |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 1132 | /* Save previous register address */ |
| 1133 | reg_save = readb(db->io_addr); |
| 1134 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1135 | /* Fill the phyxcer register into REG_0C */ |
| 1136 | iow(db, DM9000_EPAR, DM9000_PHY | reg); |
| 1137 | |
| 1138 | /* Fill the written data into REG_0D & REG_0E */ |
| 1139 | iow(db, DM9000_EPDRL, (value & 0xff)); |
| 1140 | iow(db, DM9000_EPDRH, ((value >> 8) & 0xff)); |
| 1141 | |
| 1142 | iow(db, DM9000_EPCR, 0xa); /* Issue phyxcer write command */ |
| 1143 | udelay(500); /* Wait write complete */ |
| 1144 | iow(db, DM9000_EPCR, 0x0); /* Clear phyxcer write command */ |
| 1145 | |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 1146 | /* restore the previous address */ |
| 1147 | writeb(reg_save, db->io_addr); |
| 1148 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1149 | spin_unlock_irqrestore(&db->lock,flags); |
| 1150 | } |
| 1151 | |
| 1152 | static int |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1153 | dm9000_drv_suspend(struct platform_device *dev, pm_message_t state) |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1154 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1155 | struct net_device *ndev = platform_get_drvdata(dev); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1156 | |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 1157 | if (ndev) { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1158 | if (netif_running(ndev)) { |
| 1159 | netif_device_detach(ndev); |
| 1160 | dm9000_shutdown(ndev); |
| 1161 | } |
| 1162 | } |
| 1163 | return 0; |
| 1164 | } |
| 1165 | |
| 1166 | static int |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1167 | dm9000_drv_resume(struct platform_device *dev) |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1168 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1169 | struct net_device *ndev = platform_get_drvdata(dev); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1170 | board_info_t *db = (board_info_t *) ndev->priv; |
| 1171 | |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 1172 | if (ndev) { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1173 | |
| 1174 | if (netif_running(ndev)) { |
| 1175 | dm9000_reset(db); |
| 1176 | dm9000_init_dm9000(ndev); |
| 1177 | |
| 1178 | netif_device_attach(ndev); |
| 1179 | } |
| 1180 | } |
| 1181 | return 0; |
| 1182 | } |
| 1183 | |
| 1184 | static int |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1185 | dm9000_drv_remove(struct platform_device *pdev) |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1186 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1187 | struct net_device *ndev = platform_get_drvdata(pdev); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1188 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1189 | platform_set_drvdata(pdev, NULL); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1190 | |
| 1191 | unregister_netdev(ndev); |
| 1192 | dm9000_release_board(pdev, (board_info_t *) ndev->priv); |
Ben Dooks | 9fd9f9b | 2007-05-07 11:13:25 +0000 | [diff] [blame] | 1193 | free_netdev(ndev); /* free device structure */ |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1194 | |
| 1195 | PRINTK1("clean_module() exit\n"); |
| 1196 | |
| 1197 | return 0; |
| 1198 | } |
| 1199 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1200 | static struct platform_driver dm9000_driver = { |
Ben Dooks | 5d22a31 | 2006-06-14 00:09:17 +0100 | [diff] [blame] | 1201 | .driver = { |
| 1202 | .name = "dm9000", |
| 1203 | .owner = THIS_MODULE, |
| 1204 | }, |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1205 | .probe = dm9000_probe, |
| 1206 | .remove = dm9000_drv_remove, |
| 1207 | .suspend = dm9000_drv_suspend, |
| 1208 | .resume = dm9000_drv_resume, |
| 1209 | }; |
| 1210 | |
| 1211 | static int __init |
| 1212 | dm9000_init(void) |
| 1213 | { |
Ben Dooks | 2ae2d77 | 2005-07-23 17:29:38 +0100 | [diff] [blame] | 1214 | printk(KERN_INFO "%s Ethernet Driver\n", CARDNAME); |
| 1215 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1216 | return platform_driver_register(&dm9000_driver); /* search board and register */ |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1217 | } |
| 1218 | |
| 1219 | static void __exit |
| 1220 | dm9000_cleanup(void) |
| 1221 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1222 | platform_driver_unregister(&dm9000_driver); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1223 | } |
| 1224 | |
| 1225 | module_init(dm9000_init); |
| 1226 | module_exit(dm9000_cleanup); |
| 1227 | |
| 1228 | MODULE_AUTHOR("Sascha Hauer, Ben Dooks"); |
| 1229 | MODULE_DESCRIPTION("Davicom DM9000 network driver"); |
| 1230 | MODULE_LICENSE("GPL"); |