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 | |
Alex Landau | f40d24d | 2007-07-12 12:11:48 +0800 | [diff] [blame] | 107 | #ifdef CONFIG_BLACKFIN |
| 108 | #define readsb insb |
| 109 | #define readsw insw |
| 110 | #define readsl insl |
| 111 | #define writesb outsb |
| 112 | #define writesw outsw |
| 113 | #define writesl outsl |
| 114 | #define DM9000_IRQ_FLAGS (IRQF_SHARED | IRQF_TRIGGER_HIGH) |
| 115 | #else |
| 116 | #define DM9000_IRQ_FLAGS IRQF_SHARED |
| 117 | #endif |
| 118 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 119 | /* |
| 120 | * Transmit timeout, default 5 seconds. |
| 121 | */ |
| 122 | static int watchdog = 5000; |
| 123 | module_param(watchdog, int, 0400); |
| 124 | MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds"); |
| 125 | |
| 126 | /* Structure/enum declaration ------------------------------- */ |
| 127 | typedef struct board_info { |
| 128 | |
| 129 | void __iomem *io_addr; /* Register I/O base address */ |
| 130 | void __iomem *io_data; /* Data I/O address */ |
| 131 | u16 irq; /* IRQ */ |
| 132 | |
| 133 | u16 tx_pkt_cnt; |
| 134 | u16 queue_pkt_len; |
| 135 | u16 queue_start_addr; |
| 136 | u16 dbug_cnt; |
| 137 | u8 io_mode; /* 0:word, 2:byte */ |
| 138 | u8 phy_addr; |
| 139 | |
| 140 | void (*inblk)(void __iomem *port, void *data, int length); |
| 141 | void (*outblk)(void __iomem *port, void *data, int length); |
| 142 | void (*dumpblk)(void __iomem *port, int length); |
| 143 | |
| 144 | struct resource *addr_res; /* resources found */ |
| 145 | struct resource *data_res; |
| 146 | struct resource *addr_req; /* resources requested */ |
| 147 | struct resource *data_req; |
| 148 | struct resource *irq_res; |
| 149 | |
| 150 | struct timer_list timer; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 151 | unsigned char srom[128]; |
| 152 | spinlock_t lock; |
| 153 | |
| 154 | struct mii_if_info mii; |
| 155 | u32 msg_enable; |
| 156 | } board_info_t; |
| 157 | |
| 158 | /* function declaration ------------------------------------- */ |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 159 | static int dm9000_probe(struct platform_device *); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 160 | static int dm9000_open(struct net_device *); |
| 161 | static int dm9000_start_xmit(struct sk_buff *, struct net_device *); |
| 162 | static int dm9000_stop(struct net_device *); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 163 | |
| 164 | |
| 165 | static void dm9000_timer(unsigned long); |
| 166 | static void dm9000_init_dm9000(struct net_device *); |
| 167 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 168 | static irqreturn_t dm9000_interrupt(int, void *); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 169 | |
| 170 | static int dm9000_phy_read(struct net_device *dev, int phyaddr_unsused, int reg); |
| 171 | static void dm9000_phy_write(struct net_device *dev, int phyaddr_unused, int reg, |
| 172 | int value); |
| 173 | static u16 read_srom_word(board_info_t *, int); |
| 174 | static void dm9000_rx(struct net_device *); |
| 175 | static void dm9000_hash_table(struct net_device *); |
| 176 | |
| 177 | //#define DM9000_PROGRAM_EEPROM |
| 178 | #ifdef DM9000_PROGRAM_EEPROM |
| 179 | static void program_eeprom(board_info_t * db); |
| 180 | #endif |
| 181 | /* DM9000 network board routine ---------------------------- */ |
| 182 | |
| 183 | static void |
| 184 | dm9000_reset(board_info_t * db) |
| 185 | { |
| 186 | PRINTK1("dm9000x: resetting\n"); |
| 187 | /* RESET device */ |
| 188 | writeb(DM9000_NCR, db->io_addr); |
| 189 | udelay(200); |
| 190 | writeb(NCR_RST, db->io_data); |
| 191 | udelay(200); |
| 192 | } |
| 193 | |
| 194 | /* |
| 195 | * Read a byte from I/O port |
| 196 | */ |
| 197 | static u8 |
| 198 | ior(board_info_t * db, int reg) |
| 199 | { |
| 200 | writeb(reg, db->io_addr); |
| 201 | return readb(db->io_data); |
| 202 | } |
| 203 | |
| 204 | /* |
| 205 | * Write a byte to I/O port |
| 206 | */ |
| 207 | |
| 208 | static void |
| 209 | iow(board_info_t * db, int reg, int value) |
| 210 | { |
| 211 | writeb(reg, db->io_addr); |
| 212 | writeb(value, db->io_data); |
| 213 | } |
| 214 | |
| 215 | /* routines for sending block to chip */ |
| 216 | |
| 217 | static void dm9000_outblk_8bit(void __iomem *reg, void *data, int count) |
| 218 | { |
| 219 | writesb(reg, data, count); |
| 220 | } |
| 221 | |
| 222 | static void dm9000_outblk_16bit(void __iomem *reg, void *data, int count) |
| 223 | { |
| 224 | writesw(reg, data, (count+1) >> 1); |
| 225 | } |
| 226 | |
| 227 | static void dm9000_outblk_32bit(void __iomem *reg, void *data, int count) |
| 228 | { |
| 229 | writesl(reg, data, (count+3) >> 2); |
| 230 | } |
| 231 | |
| 232 | /* input block from chip to memory */ |
| 233 | |
| 234 | static void dm9000_inblk_8bit(void __iomem *reg, void *data, int count) |
| 235 | { |
Sascha Hauer | 5f6b551 | 2005-06-20 15:32:51 -0700 | [diff] [blame] | 236 | readsb(reg, data, count); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 237 | } |
| 238 | |
| 239 | |
| 240 | static void dm9000_inblk_16bit(void __iomem *reg, void *data, int count) |
| 241 | { |
| 242 | readsw(reg, data, (count+1) >> 1); |
| 243 | } |
| 244 | |
| 245 | static void dm9000_inblk_32bit(void __iomem *reg, void *data, int count) |
| 246 | { |
| 247 | readsl(reg, data, (count+3) >> 2); |
| 248 | } |
| 249 | |
| 250 | /* dump block from chip to null */ |
| 251 | |
| 252 | static void dm9000_dumpblk_8bit(void __iomem *reg, int count) |
| 253 | { |
| 254 | int i; |
| 255 | int tmp; |
| 256 | |
| 257 | for (i = 0; i < count; i++) |
| 258 | tmp = readb(reg); |
| 259 | } |
| 260 | |
| 261 | static void dm9000_dumpblk_16bit(void __iomem *reg, int count) |
| 262 | { |
| 263 | int i; |
| 264 | int tmp; |
| 265 | |
| 266 | count = (count + 1) >> 1; |
| 267 | |
| 268 | for (i = 0; i < count; i++) |
| 269 | tmp = readw(reg); |
| 270 | } |
| 271 | |
| 272 | static void dm9000_dumpblk_32bit(void __iomem *reg, int count) |
| 273 | { |
| 274 | int i; |
| 275 | int tmp; |
| 276 | |
| 277 | count = (count + 3) >> 2; |
| 278 | |
| 279 | for (i = 0; i < count; i++) |
| 280 | tmp = readl(reg); |
| 281 | } |
| 282 | |
| 283 | /* dm9000_set_io |
| 284 | * |
| 285 | * select the specified set of io routines to use with the |
| 286 | * device |
| 287 | */ |
| 288 | |
| 289 | static void dm9000_set_io(struct board_info *db, int byte_width) |
| 290 | { |
| 291 | /* use the size of the data resource to work out what IO |
| 292 | * routines we want to use |
| 293 | */ |
| 294 | |
| 295 | switch (byte_width) { |
| 296 | case 1: |
| 297 | db->dumpblk = dm9000_dumpblk_8bit; |
| 298 | db->outblk = dm9000_outblk_8bit; |
| 299 | db->inblk = dm9000_inblk_8bit; |
| 300 | break; |
| 301 | |
| 302 | case 2: |
| 303 | db->dumpblk = dm9000_dumpblk_16bit; |
| 304 | db->outblk = dm9000_outblk_16bit; |
| 305 | db->inblk = dm9000_inblk_16bit; |
| 306 | break; |
| 307 | |
| 308 | case 3: |
| 309 | printk(KERN_ERR PFX ": 3 byte IO, falling back to 16bit\n"); |
| 310 | db->dumpblk = dm9000_dumpblk_16bit; |
| 311 | db->outblk = dm9000_outblk_16bit; |
| 312 | db->inblk = dm9000_inblk_16bit; |
| 313 | break; |
| 314 | |
| 315 | case 4: |
| 316 | default: |
| 317 | db->dumpblk = dm9000_dumpblk_32bit; |
| 318 | db->outblk = dm9000_outblk_32bit; |
| 319 | db->inblk = dm9000_inblk_32bit; |
| 320 | break; |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | |
| 325 | /* Our watchdog timed out. Called by the networking layer */ |
| 326 | static void dm9000_timeout(struct net_device *dev) |
| 327 | { |
| 328 | board_info_t *db = (board_info_t *) dev->priv; |
| 329 | u8 reg_save; |
| 330 | unsigned long flags; |
| 331 | |
| 332 | /* Save previous register address */ |
| 333 | reg_save = readb(db->io_addr); |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 334 | spin_lock_irqsave(&db->lock,flags); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 335 | |
| 336 | netif_stop_queue(dev); |
| 337 | dm9000_reset(db); |
| 338 | dm9000_init_dm9000(dev); |
| 339 | /* We can accept TX packets again */ |
| 340 | dev->trans_start = jiffies; |
| 341 | netif_wake_queue(dev); |
| 342 | |
| 343 | /* Restore previous register address */ |
| 344 | writeb(reg_save, db->io_addr); |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 345 | spin_unlock_irqrestore(&db->lock,flags); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 346 | } |
| 347 | |
Kevin Hao | 2fd0e33 | 2006-08-14 23:00:15 -0700 | [diff] [blame] | 348 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 349 | /* |
| 350 | *Used by netconsole |
| 351 | */ |
| 352 | static void dm9000_poll_controller(struct net_device *dev) |
| 353 | { |
| 354 | disable_irq(dev->irq); |
Al Viro | 2843114 | 2006-10-08 15:00:12 +0100 | [diff] [blame] | 355 | dm9000_interrupt(dev->irq,dev); |
Kevin Hao | 2fd0e33 | 2006-08-14 23:00:15 -0700 | [diff] [blame] | 356 | enable_irq(dev->irq); |
| 357 | } |
| 358 | #endif |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 359 | |
| 360 | /* dm9000_release_board |
| 361 | * |
| 362 | * release a board, and any mapped resources |
| 363 | */ |
| 364 | |
| 365 | static void |
| 366 | dm9000_release_board(struct platform_device *pdev, struct board_info *db) |
| 367 | { |
| 368 | if (db->data_res == NULL) { |
| 369 | if (db->addr_res != NULL) |
| 370 | release_mem_region((unsigned long)db->io_addr, 4); |
| 371 | return; |
| 372 | } |
| 373 | |
| 374 | /* unmap our resources */ |
| 375 | |
| 376 | iounmap(db->io_addr); |
| 377 | iounmap(db->io_data); |
| 378 | |
| 379 | /* release the resources */ |
| 380 | |
| 381 | if (db->data_req != NULL) { |
| 382 | release_resource(db->data_req); |
| 383 | kfree(db->data_req); |
| 384 | } |
| 385 | |
Dirk Opfer | 5198548 | 2006-09-06 19:53:32 +0200 | [diff] [blame] | 386 | if (db->addr_req != NULL) { |
| 387 | release_resource(db->addr_req); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 388 | kfree(db->addr_req); |
| 389 | } |
| 390 | } |
| 391 | |
| 392 | #define res_size(_r) (((_r)->end - (_r)->start) + 1) |
| 393 | |
| 394 | /* |
| 395 | * Search DM9000 board, allocate space and register it |
| 396 | */ |
| 397 | static int |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 398 | dm9000_probe(struct platform_device *pdev) |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 399 | { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 400 | struct dm9000_plat_data *pdata = pdev->dev.platform_data; |
| 401 | struct board_info *db; /* Point a board information structure */ |
| 402 | struct net_device *ndev; |
| 403 | unsigned long base; |
| 404 | int ret = 0; |
| 405 | int iosize; |
| 406 | int i; |
| 407 | u32 id_val; |
| 408 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 409 | /* Init network device */ |
| 410 | ndev = alloc_etherdev(sizeof (struct board_info)); |
| 411 | if (!ndev) { |
| 412 | printk("%s: could not allocate device.\n", CARDNAME); |
| 413 | return -ENOMEM; |
| 414 | } |
| 415 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 416 | SET_NETDEV_DEV(ndev, &pdev->dev); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 417 | |
| 418 | PRINTK2("dm9000_probe()"); |
| 419 | |
| 420 | /* setup board info structure */ |
| 421 | db = (struct board_info *) ndev->priv; |
| 422 | memset(db, 0, sizeof (*db)); |
| 423 | |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 424 | spin_lock_init(&db->lock); |
| 425 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 426 | if (pdev->num_resources < 2) { |
| 427 | ret = -ENODEV; |
| 428 | goto out; |
Ben Dooks | b4ed03f | 2006-06-13 23:47:19 +0100 | [diff] [blame] | 429 | } else if (pdev->num_resources == 2) { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 430 | base = pdev->resource[0].start; |
| 431 | |
| 432 | if (!request_mem_region(base, 4, ndev->name)) { |
| 433 | ret = -EBUSY; |
| 434 | goto out; |
| 435 | } |
| 436 | |
| 437 | ndev->base_addr = base; |
| 438 | ndev->irq = pdev->resource[1].start; |
Ben Dooks | b4ed03f | 2006-06-13 23:47:19 +0100 | [diff] [blame] | 439 | db->io_addr = (void __iomem *)base; |
| 440 | db->io_data = (void __iomem *)(base + 4); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 441 | |
Alex Landau | f40d24d | 2007-07-12 12:11:48 +0800 | [diff] [blame] | 442 | /* ensure at least we have a default set of IO routines */ |
| 443 | dm9000_set_io(db, 2); |
| 444 | |
Ben Dooks | b4ed03f | 2006-06-13 23:47:19 +0100 | [diff] [blame] | 445 | } else { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 446 | db->addr_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 447 | db->data_res = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
| 448 | db->irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| 449 | |
Ben Dooks | b4ed03f | 2006-06-13 23:47:19 +0100 | [diff] [blame] | 450 | if (db->addr_res == NULL || db->data_res == NULL || |
| 451 | db->irq_res == NULL) { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 452 | printk(KERN_ERR PFX "insufficient resources\n"); |
| 453 | ret = -ENOENT; |
| 454 | goto out; |
| 455 | } |
| 456 | |
| 457 | i = res_size(db->addr_res); |
| 458 | db->addr_req = request_mem_region(db->addr_res->start, i, |
| 459 | pdev->name); |
| 460 | |
| 461 | if (db->addr_req == NULL) { |
| 462 | printk(KERN_ERR PFX "cannot claim address reg area\n"); |
| 463 | ret = -EIO; |
| 464 | goto out; |
| 465 | } |
| 466 | |
| 467 | db->io_addr = ioremap(db->addr_res->start, i); |
| 468 | |
| 469 | if (db->io_addr == NULL) { |
| 470 | printk(KERN_ERR "failed to ioremap address reg\n"); |
| 471 | ret = -EINVAL; |
| 472 | goto out; |
| 473 | } |
| 474 | |
| 475 | iosize = res_size(db->data_res); |
| 476 | db->data_req = request_mem_region(db->data_res->start, iosize, |
| 477 | pdev->name); |
| 478 | |
| 479 | if (db->data_req == NULL) { |
| 480 | printk(KERN_ERR PFX "cannot claim data reg area\n"); |
| 481 | ret = -EIO; |
| 482 | goto out; |
| 483 | } |
| 484 | |
| 485 | db->io_data = ioremap(db->data_res->start, iosize); |
| 486 | |
| 487 | if (db->io_data == NULL) { |
| 488 | printk(KERN_ERR "failed to ioremap data reg\n"); |
| 489 | ret = -EINVAL; |
| 490 | goto out; |
| 491 | } |
| 492 | |
| 493 | /* fill in parameters for net-dev structure */ |
| 494 | |
| 495 | ndev->base_addr = (unsigned long)db->io_addr; |
| 496 | ndev->irq = db->irq_res->start; |
| 497 | |
| 498 | /* ensure at least we have a default set of IO routines */ |
| 499 | dm9000_set_io(db, iosize); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 500 | } |
| 501 | |
| 502 | /* check to see if anything is being over-ridden */ |
| 503 | if (pdata != NULL) { |
| 504 | /* check to see if the driver wants to over-ride the |
| 505 | * default IO width */ |
| 506 | |
| 507 | if (pdata->flags & DM9000_PLATF_8BITONLY) |
| 508 | dm9000_set_io(db, 1); |
| 509 | |
| 510 | if (pdata->flags & DM9000_PLATF_16BITONLY) |
| 511 | dm9000_set_io(db, 2); |
| 512 | |
| 513 | if (pdata->flags & DM9000_PLATF_32BITONLY) |
| 514 | dm9000_set_io(db, 4); |
| 515 | |
| 516 | /* check to see if there are any IO routine |
| 517 | * over-rides */ |
| 518 | |
| 519 | if (pdata->inblk != NULL) |
| 520 | db->inblk = pdata->inblk; |
| 521 | |
| 522 | if (pdata->outblk != NULL) |
| 523 | db->outblk = pdata->outblk; |
| 524 | |
| 525 | if (pdata->dumpblk != NULL) |
| 526 | db->dumpblk = pdata->dumpblk; |
| 527 | } |
| 528 | |
| 529 | dm9000_reset(db); |
| 530 | |
| 531 | /* try two times, DM9000 sometimes gets the first read wrong */ |
| 532 | for (i = 0; i < 2; i++) { |
| 533 | id_val = ior(db, DM9000_VIDL); |
| 534 | id_val |= (u32)ior(db, DM9000_VIDH) << 8; |
| 535 | id_val |= (u32)ior(db, DM9000_PIDL) << 16; |
| 536 | id_val |= (u32)ior(db, DM9000_PIDH) << 24; |
| 537 | |
| 538 | if (id_val == DM9000_ID) |
| 539 | break; |
| 540 | printk("%s: read wrong id 0x%08x\n", CARDNAME, id_val); |
| 541 | } |
| 542 | |
| 543 | if (id_val != DM9000_ID) { |
| 544 | printk("%s: wrong id: 0x%08x\n", CARDNAME, id_val); |
| 545 | goto release; |
| 546 | } |
| 547 | |
| 548 | /* from this point we assume that we have found a DM9000 */ |
| 549 | |
| 550 | /* driver system function */ |
| 551 | ether_setup(ndev); |
| 552 | |
| 553 | ndev->open = &dm9000_open; |
| 554 | ndev->hard_start_xmit = &dm9000_start_xmit; |
| 555 | ndev->tx_timeout = &dm9000_timeout; |
| 556 | ndev->watchdog_timeo = msecs_to_jiffies(watchdog); |
| 557 | ndev->stop = &dm9000_stop; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 558 | ndev->set_multicast_list = &dm9000_hash_table; |
Kevin Hao | 2fd0e33 | 2006-08-14 23:00:15 -0700 | [diff] [blame] | 559 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 560 | ndev->poll_controller = &dm9000_poll_controller; |
| 561 | #endif |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 562 | |
| 563 | #ifdef DM9000_PROGRAM_EEPROM |
| 564 | program_eeprom(db); |
| 565 | #endif |
| 566 | db->msg_enable = NETIF_MSG_LINK; |
| 567 | db->mii.phy_id_mask = 0x1f; |
| 568 | db->mii.reg_num_mask = 0x1f; |
| 569 | db->mii.force_media = 0; |
| 570 | db->mii.full_duplex = 0; |
| 571 | db->mii.dev = ndev; |
| 572 | db->mii.mdio_read = dm9000_phy_read; |
| 573 | db->mii.mdio_write = dm9000_phy_write; |
| 574 | |
| 575 | /* Read SROM content */ |
| 576 | for (i = 0; i < 64; i++) |
| 577 | ((u16 *) db->srom)[i] = read_srom_word(db, i); |
| 578 | |
| 579 | /* Set Node Address */ |
| 580 | for (i = 0; i < 6; i++) |
| 581 | ndev->dev_addr[i] = db->srom[i]; |
| 582 | |
Ben Dooks | 5b55dda | 2006-06-13 23:50:15 +0100 | [diff] [blame] | 583 | if (!is_valid_ether_addr(ndev->dev_addr)) { |
| 584 | /* try reading from mac */ |
| 585 | |
| 586 | for (i = 0; i < 6; i++) |
| 587 | ndev->dev_addr[i] = ior(db, i+DM9000_PAR); |
| 588 | } |
| 589 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 590 | if (!is_valid_ether_addr(ndev->dev_addr)) |
| 591 | printk("%s: Invalid ethernet MAC address. Please " |
| 592 | "set using ifconfig\n", ndev->name); |
| 593 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 594 | platform_set_drvdata(pdev, ndev); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 595 | ret = register_netdev(ndev); |
| 596 | |
| 597 | if (ret == 0) { |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame^] | 598 | DECLARE_MAC_BUF(mac); |
| 599 | printk("%s: dm9000 at %p,%p IRQ %d MAC: %s\n", |
| 600 | ndev->name, db->io_addr, db->io_data, ndev->irq, |
| 601 | print_mac(mac, ndev->dev_addr)); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 602 | } |
| 603 | return 0; |
| 604 | |
| 605 | release: |
| 606 | out: |
| 607 | printk("%s: not found (%d).\n", CARDNAME, ret); |
| 608 | |
| 609 | dm9000_release_board(pdev, db); |
Ben Dooks | 9fd9f9b | 2007-05-07 11:13:25 +0000 | [diff] [blame] | 610 | free_netdev(ndev); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 611 | |
| 612 | return ret; |
| 613 | } |
| 614 | |
| 615 | /* |
| 616 | * Open the interface. |
| 617 | * The interface is opened whenever "ifconfig" actives it. |
| 618 | */ |
| 619 | static int |
| 620 | dm9000_open(struct net_device *dev) |
| 621 | { |
| 622 | board_info_t *db = (board_info_t *) dev->priv; |
| 623 | |
| 624 | PRINTK2("entering dm9000_open\n"); |
| 625 | |
Alex Landau | f40d24d | 2007-07-12 12:11:48 +0800 | [diff] [blame] | 626 | if (request_irq(dev->irq, &dm9000_interrupt, DM9000_IRQ_FLAGS, dev->name, dev)) |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 627 | return -EAGAIN; |
| 628 | |
| 629 | /* Initialize DM9000 board */ |
| 630 | dm9000_reset(db); |
| 631 | dm9000_init_dm9000(dev); |
| 632 | |
| 633 | /* Init driver variable */ |
| 634 | db->dbug_cnt = 0; |
| 635 | |
| 636 | /* set and active a timer process */ |
| 637 | init_timer(&db->timer); |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 638 | db->timer.expires = DM9000_TIMER_WUT; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 639 | db->timer.data = (unsigned long) dev; |
| 640 | db->timer.function = &dm9000_timer; |
| 641 | add_timer(&db->timer); |
| 642 | |
| 643 | mii_check_media(&db->mii, netif_msg_link(db), 1); |
| 644 | netif_start_queue(dev); |
| 645 | |
| 646 | return 0; |
| 647 | } |
| 648 | |
| 649 | /* |
| 650 | * Initilize dm9000 board |
| 651 | */ |
| 652 | static void |
| 653 | dm9000_init_dm9000(struct net_device *dev) |
| 654 | { |
| 655 | board_info_t *db = (board_info_t *) dev->priv; |
| 656 | |
| 657 | PRINTK1("entering %s\n",__FUNCTION__); |
| 658 | |
| 659 | /* I/O mode */ |
| 660 | db->io_mode = ior(db, DM9000_ISR) >> 6; /* ISR bit7:6 keeps I/O mode */ |
| 661 | |
| 662 | /* GPIO0 on pre-activate PHY */ |
| 663 | iow(db, DM9000_GPR, 0); /* REG_1F bit0 activate phyxcer */ |
| 664 | iow(db, DM9000_GPCR, GPCR_GEP_CNTL); /* Let GPIO0 output */ |
| 665 | iow(db, DM9000_GPR, 0); /* Enable PHY */ |
| 666 | |
| 667 | /* Program operating register */ |
| 668 | iow(db, DM9000_TCR, 0); /* TX Polling clear */ |
| 669 | iow(db, DM9000_BPTR, 0x3f); /* Less 3Kb, 200us */ |
| 670 | iow(db, DM9000_FCR, 0xff); /* Flow Control */ |
| 671 | iow(db, DM9000_SMCR, 0); /* Special Mode */ |
| 672 | /* clear TX status */ |
| 673 | iow(db, DM9000_NSR, NSR_WAKEST | NSR_TX2END | NSR_TX1END); |
| 674 | iow(db, DM9000_ISR, ISR_CLR_STATUS); /* Clear interrupt status */ |
| 675 | |
| 676 | /* Set address filter table */ |
| 677 | dm9000_hash_table(dev); |
| 678 | |
| 679 | /* Activate DM9000 */ |
| 680 | iow(db, DM9000_RCR, RCR_DIS_LONG | RCR_DIS_CRC | RCR_RXEN); |
| 681 | /* Enable TX/RX interrupt mask */ |
| 682 | iow(db, DM9000_IMR, IMR_PAR | IMR_PTM | IMR_PRM); |
| 683 | |
| 684 | /* Init Driver variable */ |
| 685 | db->tx_pkt_cnt = 0; |
| 686 | db->queue_pkt_len = 0; |
| 687 | dev->trans_start = 0; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 688 | } |
| 689 | |
| 690 | /* |
| 691 | * Hardware start transmission. |
| 692 | * Send a packet to media from the upper layer. |
| 693 | */ |
| 694 | static int |
| 695 | dm9000_start_xmit(struct sk_buff *skb, struct net_device *dev) |
| 696 | { |
Florian Westphal | c46ac94 | 2007-08-21 01:33:42 +0200 | [diff] [blame] | 697 | unsigned long flags; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 698 | board_info_t *db = (board_info_t *) dev->priv; |
| 699 | |
| 700 | PRINTK3("dm9000_start_xmit\n"); |
| 701 | |
| 702 | if (db->tx_pkt_cnt > 1) |
| 703 | return 1; |
| 704 | |
Florian Westphal | c46ac94 | 2007-08-21 01:33:42 +0200 | [diff] [blame] | 705 | spin_lock_irqsave(&db->lock, flags); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 706 | |
| 707 | /* Move data to DM9000 TX RAM */ |
| 708 | writeb(DM9000_MWCMD, db->io_addr); |
| 709 | |
| 710 | (db->outblk)(db->io_data, skb->data, skb->len); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 711 | dev->stats.tx_bytes += skb->len; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 712 | |
Florian Westphal | c46ac94 | 2007-08-21 01:33:42 +0200 | [diff] [blame] | 713 | db->tx_pkt_cnt++; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 714 | /* TX control: First packet immediately send, second packet queue */ |
Florian Westphal | c46ac94 | 2007-08-21 01:33:42 +0200 | [diff] [blame] | 715 | if (db->tx_pkt_cnt == 1) { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 716 | /* Set TX length to DM9000 */ |
| 717 | iow(db, DM9000_TXPLL, skb->len & 0xff); |
| 718 | iow(db, DM9000_TXPLH, (skb->len >> 8) & 0xff); |
| 719 | |
| 720 | /* Issue TX polling command */ |
| 721 | iow(db, DM9000_TCR, TCR_TXREQ); /* Cleared after TX complete */ |
| 722 | |
| 723 | dev->trans_start = jiffies; /* save the time stamp */ |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 724 | } else { |
| 725 | /* Second packet */ |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 726 | db->queue_pkt_len = skb->len; |
Florian Westphal | c46ac94 | 2007-08-21 01:33:42 +0200 | [diff] [blame] | 727 | netif_stop_queue(dev); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 728 | } |
| 729 | |
Florian Westphal | c46ac94 | 2007-08-21 01:33:42 +0200 | [diff] [blame] | 730 | spin_unlock_irqrestore(&db->lock, flags); |
| 731 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 732 | /* free this SKB */ |
| 733 | dev_kfree_skb(skb); |
| 734 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 735 | return 0; |
| 736 | } |
| 737 | |
| 738 | static void |
| 739 | dm9000_shutdown(struct net_device *dev) |
| 740 | { |
| 741 | board_info_t *db = (board_info_t *) dev->priv; |
| 742 | |
| 743 | /* RESET device */ |
| 744 | dm9000_phy_write(dev, 0, MII_BMCR, BMCR_RESET); /* PHY RESET */ |
| 745 | iow(db, DM9000_GPR, 0x01); /* Power-Down PHY */ |
| 746 | iow(db, DM9000_IMR, IMR_PAR); /* Disable all interrupt */ |
| 747 | iow(db, DM9000_RCR, 0x00); /* Disable RX */ |
| 748 | } |
| 749 | |
| 750 | /* |
| 751 | * Stop the interface. |
| 752 | * The interface is stopped when it is brought. |
| 753 | */ |
| 754 | static int |
| 755 | dm9000_stop(struct net_device *ndev) |
| 756 | { |
| 757 | board_info_t *db = (board_info_t *) ndev->priv; |
| 758 | |
| 759 | PRINTK1("entering %s\n",__FUNCTION__); |
| 760 | |
| 761 | /* deleted timer */ |
| 762 | del_timer(&db->timer); |
| 763 | |
| 764 | netif_stop_queue(ndev); |
| 765 | netif_carrier_off(ndev); |
| 766 | |
| 767 | /* free interrupt */ |
| 768 | free_irq(ndev->irq, ndev); |
| 769 | |
| 770 | dm9000_shutdown(ndev); |
| 771 | |
| 772 | return 0; |
| 773 | } |
| 774 | |
| 775 | /* |
| 776 | * DM9000 interrupt handler |
| 777 | * receive the packet to upper layer, free the transmitted packet |
| 778 | */ |
| 779 | |
Ben Dooks | 5d22a31 | 2006-06-14 00:09:17 +0100 | [diff] [blame] | 780 | static void |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 781 | dm9000_tx_done(struct net_device *dev, board_info_t * db) |
| 782 | { |
| 783 | int tx_status = ior(db, DM9000_NSR); /* Got TX status */ |
| 784 | |
| 785 | if (tx_status & (NSR_TX2END | NSR_TX1END)) { |
| 786 | /* One packet sent complete */ |
| 787 | db->tx_pkt_cnt--; |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 788 | dev->stats.tx_packets++; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 789 | |
| 790 | /* Queue packet check & send */ |
| 791 | if (db->tx_pkt_cnt > 0) { |
| 792 | iow(db, DM9000_TXPLL, db->queue_pkt_len & 0xff); |
| 793 | iow(db, DM9000_TXPLH, (db->queue_pkt_len >> 8) & 0xff); |
| 794 | iow(db, DM9000_TCR, TCR_TXREQ); |
| 795 | dev->trans_start = jiffies; |
| 796 | } |
| 797 | netif_wake_queue(dev); |
| 798 | } |
| 799 | } |
| 800 | |
| 801 | static irqreturn_t |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 802 | dm9000_interrupt(int irq, void *dev_id) |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 803 | { |
| 804 | struct net_device *dev = dev_id; |
| 805 | board_info_t *db; |
| 806 | int int_status; |
| 807 | u8 reg_save; |
| 808 | |
| 809 | PRINTK3("entering %s\n",__FUNCTION__); |
| 810 | |
| 811 | if (!dev) { |
| 812 | PRINTK1("dm9000_interrupt() without DEVICE arg\n"); |
| 813 | return IRQ_HANDLED; |
| 814 | } |
| 815 | |
| 816 | /* A real interrupt coming */ |
| 817 | db = (board_info_t *) dev->priv; |
| 818 | spin_lock(&db->lock); |
| 819 | |
| 820 | /* Save previous register address */ |
| 821 | reg_save = readb(db->io_addr); |
| 822 | |
| 823 | /* Disable all interrupts */ |
| 824 | iow(db, DM9000_IMR, IMR_PAR); |
| 825 | |
| 826 | /* Got DM9000 interrupt status */ |
| 827 | int_status = ior(db, DM9000_ISR); /* Got ISR */ |
| 828 | iow(db, DM9000_ISR, int_status); /* Clear ISR status */ |
| 829 | |
| 830 | /* Received the coming packet */ |
| 831 | if (int_status & ISR_PRS) |
| 832 | dm9000_rx(dev); |
| 833 | |
| 834 | /* Trnasmit Interrupt check */ |
| 835 | if (int_status & ISR_PTS) |
| 836 | dm9000_tx_done(dev, db); |
| 837 | |
| 838 | /* Re-enable interrupt mask */ |
| 839 | iow(db, DM9000_IMR, IMR_PAR | IMR_PTM | IMR_PRM); |
| 840 | |
| 841 | /* Restore previous register address */ |
| 842 | writeb(reg_save, db->io_addr); |
| 843 | |
| 844 | spin_unlock(&db->lock); |
| 845 | |
| 846 | return IRQ_HANDLED; |
| 847 | } |
| 848 | |
| 849 | /* |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 850 | * A periodic timer routine |
| 851 | * Dynamic media sense, allocated Rx buffer... |
| 852 | */ |
| 853 | static void |
| 854 | dm9000_timer(unsigned long data) |
| 855 | { |
| 856 | struct net_device *dev = (struct net_device *) data; |
| 857 | board_info_t *db = (board_info_t *) dev->priv; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 858 | |
| 859 | PRINTK3("dm9000_timer()\n"); |
| 860 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 861 | mii_check_media(&db->mii, netif_msg_link(db), 0); |
| 862 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 863 | /* Set timer again */ |
| 864 | db->timer.expires = DM9000_TIMER_WUT; |
| 865 | add_timer(&db->timer); |
| 866 | } |
| 867 | |
| 868 | struct dm9000_rxhdr { |
| 869 | u16 RxStatus; |
| 870 | u16 RxLen; |
| 871 | } __attribute__((__packed__)); |
| 872 | |
| 873 | /* |
| 874 | * Received a packet and pass to upper layer |
| 875 | */ |
| 876 | static void |
| 877 | dm9000_rx(struct net_device *dev) |
| 878 | { |
| 879 | board_info_t *db = (board_info_t *) dev->priv; |
| 880 | struct dm9000_rxhdr rxhdr; |
| 881 | struct sk_buff *skb; |
| 882 | u8 rxbyte, *rdptr; |
Richard Knutsson | 6478fac | 2007-05-01 18:43:27 +0200 | [diff] [blame] | 883 | bool GoodPacket; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 884 | int RxLen; |
| 885 | |
| 886 | /* Check packet ready or not */ |
| 887 | do { |
| 888 | ior(db, DM9000_MRCMDX); /* Dummy read */ |
| 889 | |
| 890 | /* Get most updated data */ |
| 891 | rxbyte = readb(db->io_data); |
| 892 | |
| 893 | /* Status check: this byte must be 0 or 1 */ |
| 894 | if (rxbyte > DM9000_PKT_RDY) { |
| 895 | printk("status check failed: %d\n", rxbyte); |
| 896 | iow(db, DM9000_RCR, 0x00); /* Stop Device */ |
| 897 | iow(db, DM9000_ISR, IMR_PAR); /* Stop INT request */ |
| 898 | return; |
| 899 | } |
| 900 | |
| 901 | if (rxbyte != DM9000_PKT_RDY) |
| 902 | return; |
| 903 | |
| 904 | /* A packet ready now & Get status/length */ |
Richard Knutsson | 6478fac | 2007-05-01 18:43:27 +0200 | [diff] [blame] | 905 | GoodPacket = true; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 906 | writeb(DM9000_MRCMD, db->io_addr); |
| 907 | |
| 908 | (db->inblk)(db->io_data, &rxhdr, sizeof(rxhdr)); |
| 909 | |
| 910 | RxLen = rxhdr.RxLen; |
| 911 | |
| 912 | /* Packet Status check */ |
| 913 | if (RxLen < 0x40) { |
Richard Knutsson | 6478fac | 2007-05-01 18:43:27 +0200 | [diff] [blame] | 914 | GoodPacket = false; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 915 | PRINTK1("Bad Packet received (runt)\n"); |
| 916 | } |
| 917 | |
| 918 | if (RxLen > DM9000_PKT_MAX) { |
| 919 | PRINTK1("RST: RX Len:%x\n", RxLen); |
| 920 | } |
| 921 | |
| 922 | if (rxhdr.RxStatus & 0xbf00) { |
Richard Knutsson | 6478fac | 2007-05-01 18:43:27 +0200 | [diff] [blame] | 923 | GoodPacket = false; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 924 | if (rxhdr.RxStatus & 0x100) { |
| 925 | PRINTK1("fifo error\n"); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 926 | dev->stats.rx_fifo_errors++; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 927 | } |
| 928 | if (rxhdr.RxStatus & 0x200) { |
| 929 | PRINTK1("crc error\n"); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 930 | dev->stats.rx_crc_errors++; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 931 | } |
| 932 | if (rxhdr.RxStatus & 0x8000) { |
| 933 | PRINTK1("length error\n"); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 934 | dev->stats.rx_length_errors++; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 935 | } |
| 936 | } |
| 937 | |
| 938 | /* Move data from DM9000 */ |
| 939 | if (GoodPacket |
| 940 | && ((skb = dev_alloc_skb(RxLen + 4)) != NULL)) { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 941 | skb_reserve(skb, 2); |
| 942 | rdptr = (u8 *) skb_put(skb, RxLen - 4); |
| 943 | |
| 944 | /* Read received packet from RX SRAM */ |
| 945 | |
| 946 | (db->inblk)(db->io_data, rdptr, RxLen); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 947 | dev->stats.rx_bytes += RxLen; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 948 | |
| 949 | /* Pass to upper layer */ |
| 950 | skb->protocol = eth_type_trans(skb, dev); |
| 951 | netif_rx(skb); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 952 | dev->stats.rx_packets++; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 953 | |
| 954 | } else { |
| 955 | /* need to dump the packet's data */ |
| 956 | |
| 957 | (db->dumpblk)(db->io_data, RxLen); |
| 958 | } |
| 959 | } while (rxbyte == DM9000_PKT_RDY); |
| 960 | } |
| 961 | |
| 962 | /* |
| 963 | * Read a word data from SROM |
| 964 | */ |
| 965 | static u16 |
| 966 | read_srom_word(board_info_t * db, int offset) |
| 967 | { |
| 968 | iow(db, DM9000_EPAR, offset); |
| 969 | iow(db, DM9000_EPCR, EPCR_ERPRR); |
| 970 | mdelay(8); /* according to the datasheet 200us should be enough, |
| 971 | but it doesn't work */ |
| 972 | iow(db, DM9000_EPCR, 0x0); |
| 973 | return (ior(db, DM9000_EPDRL) + (ior(db, DM9000_EPDRH) << 8)); |
| 974 | } |
| 975 | |
| 976 | #ifdef DM9000_PROGRAM_EEPROM |
| 977 | /* |
| 978 | * Write a word data to SROM |
| 979 | */ |
| 980 | static void |
| 981 | write_srom_word(board_info_t * db, int offset, u16 val) |
| 982 | { |
| 983 | iow(db, DM9000_EPAR, offset); |
| 984 | iow(db, DM9000_EPDRH, ((val >> 8) & 0xff)); |
| 985 | iow(db, DM9000_EPDRL, (val & 0xff)); |
| 986 | iow(db, DM9000_EPCR, EPCR_WEP | EPCR_ERPRW); |
| 987 | mdelay(8); /* same shit */ |
| 988 | iow(db, DM9000_EPCR, 0); |
| 989 | } |
| 990 | |
| 991 | /* |
| 992 | * Only for development: |
| 993 | * Here we write static data to the eeprom in case |
| 994 | * we don't have valid content on a new board |
| 995 | */ |
| 996 | static void |
| 997 | program_eeprom(board_info_t * db) |
| 998 | { |
| 999 | u16 eeprom[] = { 0x0c00, 0x007f, 0x1300, /* MAC Address */ |
| 1000 | 0x0000, /* Autoload: accept nothing */ |
| 1001 | 0x0a46, 0x9000, /* Vendor / Product ID */ |
| 1002 | 0x0000, /* pin control */ |
| 1003 | 0x0000, |
| 1004 | }; /* Wake-up mode control */ |
| 1005 | int i; |
| 1006 | for (i = 0; i < 8; i++) |
| 1007 | write_srom_word(db, i, eeprom[i]); |
| 1008 | } |
| 1009 | #endif |
| 1010 | |
| 1011 | |
| 1012 | /* |
| 1013 | * Calculate the CRC valude of the Rx packet |
| 1014 | * flag = 1 : return the reverse CRC (for the received packet CRC) |
| 1015 | * 0 : return the normal CRC (for Hash Table index) |
| 1016 | */ |
| 1017 | |
| 1018 | static unsigned long |
| 1019 | cal_CRC(unsigned char *Data, unsigned int Len, u8 flag) |
| 1020 | { |
| 1021 | |
| 1022 | u32 crc = ether_crc_le(Len, Data); |
| 1023 | |
| 1024 | if (flag) |
| 1025 | return ~crc; |
| 1026 | |
| 1027 | return crc; |
| 1028 | } |
| 1029 | |
| 1030 | /* |
| 1031 | * Set DM9000 multicast address |
| 1032 | */ |
| 1033 | static void |
| 1034 | dm9000_hash_table(struct net_device *dev) |
| 1035 | { |
| 1036 | board_info_t *db = (board_info_t *) dev->priv; |
| 1037 | struct dev_mc_list *mcptr = dev->mc_list; |
| 1038 | int mc_cnt = dev->mc_count; |
| 1039 | u32 hash_val; |
| 1040 | u16 i, oft, hash_table[4]; |
| 1041 | unsigned long flags; |
| 1042 | |
| 1043 | PRINTK2("dm9000_hash_table()\n"); |
| 1044 | |
| 1045 | spin_lock_irqsave(&db->lock,flags); |
| 1046 | |
| 1047 | for (i = 0, oft = 0x10; i < 6; i++, oft++) |
| 1048 | iow(db, oft, dev->dev_addr[i]); |
| 1049 | |
| 1050 | /* Clear Hash Table */ |
| 1051 | for (i = 0; i < 4; i++) |
| 1052 | hash_table[i] = 0x0; |
| 1053 | |
| 1054 | /* broadcast address */ |
| 1055 | hash_table[3] = 0x8000; |
| 1056 | |
| 1057 | /* the multicast address in Hash Table : 64 bits */ |
| 1058 | for (i = 0; i < mc_cnt; i++, mcptr = mcptr->next) { |
| 1059 | hash_val = cal_CRC((char *) mcptr->dmi_addr, 6, 0) & 0x3f; |
| 1060 | hash_table[hash_val / 16] |= (u16) 1 << (hash_val % 16); |
| 1061 | } |
| 1062 | |
| 1063 | /* Write the hash table to MAC MD table */ |
| 1064 | for (i = 0, oft = 0x16; i < 4; i++) { |
| 1065 | iow(db, oft++, hash_table[i] & 0xff); |
| 1066 | iow(db, oft++, (hash_table[i] >> 8) & 0xff); |
| 1067 | } |
| 1068 | |
| 1069 | spin_unlock_irqrestore(&db->lock,flags); |
| 1070 | } |
| 1071 | |
| 1072 | |
| 1073 | /* |
| 1074 | * Read a word from phyxcer |
| 1075 | */ |
| 1076 | static int |
| 1077 | dm9000_phy_read(struct net_device *dev, int phy_reg_unused, int reg) |
| 1078 | { |
| 1079 | board_info_t *db = (board_info_t *) dev->priv; |
| 1080 | unsigned long flags; |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 1081 | unsigned int reg_save; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1082 | int ret; |
| 1083 | |
| 1084 | spin_lock_irqsave(&db->lock,flags); |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 1085 | |
| 1086 | /* Save previous register address */ |
| 1087 | reg_save = readb(db->io_addr); |
| 1088 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1089 | /* Fill the phyxcer register into REG_0C */ |
| 1090 | iow(db, DM9000_EPAR, DM9000_PHY | reg); |
| 1091 | |
| 1092 | iow(db, DM9000_EPCR, 0xc); /* Issue phyxcer read command */ |
| 1093 | udelay(100); /* Wait read complete */ |
| 1094 | iow(db, DM9000_EPCR, 0x0); /* Clear phyxcer read command */ |
| 1095 | |
| 1096 | /* The read data keeps on REG_0D & REG_0E */ |
| 1097 | ret = (ior(db, DM9000_EPDRH) << 8) | ior(db, DM9000_EPDRL); |
| 1098 | |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 1099 | /* restore the previous address */ |
| 1100 | writeb(reg_save, db->io_addr); |
| 1101 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1102 | spin_unlock_irqrestore(&db->lock,flags); |
| 1103 | |
| 1104 | return ret; |
| 1105 | } |
| 1106 | |
| 1107 | /* |
| 1108 | * Write a word to phyxcer |
| 1109 | */ |
| 1110 | static void |
| 1111 | dm9000_phy_write(struct net_device *dev, int phyaddr_unused, int reg, int value) |
| 1112 | { |
| 1113 | board_info_t *db = (board_info_t *) dev->priv; |
| 1114 | unsigned long flags; |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 1115 | unsigned long reg_save; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1116 | |
| 1117 | spin_lock_irqsave(&db->lock,flags); |
| 1118 | |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 1119 | /* Save previous register address */ |
| 1120 | reg_save = readb(db->io_addr); |
| 1121 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1122 | /* Fill the phyxcer register into REG_0C */ |
| 1123 | iow(db, DM9000_EPAR, DM9000_PHY | reg); |
| 1124 | |
| 1125 | /* Fill the written data into REG_0D & REG_0E */ |
| 1126 | iow(db, DM9000_EPDRL, (value & 0xff)); |
| 1127 | iow(db, DM9000_EPDRH, ((value >> 8) & 0xff)); |
| 1128 | |
| 1129 | iow(db, DM9000_EPCR, 0xa); /* Issue phyxcer write command */ |
| 1130 | udelay(500); /* Wait write complete */ |
| 1131 | iow(db, DM9000_EPCR, 0x0); /* Clear phyxcer write command */ |
| 1132 | |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 1133 | /* restore the previous address */ |
| 1134 | writeb(reg_save, db->io_addr); |
| 1135 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1136 | spin_unlock_irqrestore(&db->lock,flags); |
| 1137 | } |
| 1138 | |
| 1139 | static int |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1140 | dm9000_drv_suspend(struct platform_device *dev, pm_message_t state) |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1141 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1142 | struct net_device *ndev = platform_get_drvdata(dev); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1143 | |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 1144 | if (ndev) { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1145 | if (netif_running(ndev)) { |
| 1146 | netif_device_detach(ndev); |
| 1147 | dm9000_shutdown(ndev); |
| 1148 | } |
| 1149 | } |
| 1150 | return 0; |
| 1151 | } |
| 1152 | |
| 1153 | static int |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1154 | dm9000_drv_resume(struct platform_device *dev) |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1155 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1156 | struct net_device *ndev = platform_get_drvdata(dev); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1157 | board_info_t *db = (board_info_t *) ndev->priv; |
| 1158 | |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 1159 | if (ndev) { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1160 | |
| 1161 | if (netif_running(ndev)) { |
| 1162 | dm9000_reset(db); |
| 1163 | dm9000_init_dm9000(ndev); |
| 1164 | |
| 1165 | netif_device_attach(ndev); |
| 1166 | } |
| 1167 | } |
| 1168 | return 0; |
| 1169 | } |
| 1170 | |
| 1171 | static int |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1172 | dm9000_drv_remove(struct platform_device *pdev) |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1173 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1174 | struct net_device *ndev = platform_get_drvdata(pdev); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1175 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1176 | platform_set_drvdata(pdev, NULL); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1177 | |
| 1178 | unregister_netdev(ndev); |
| 1179 | dm9000_release_board(pdev, (board_info_t *) ndev->priv); |
Ben Dooks | 9fd9f9b | 2007-05-07 11:13:25 +0000 | [diff] [blame] | 1180 | free_netdev(ndev); /* free device structure */ |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1181 | |
| 1182 | PRINTK1("clean_module() exit\n"); |
| 1183 | |
| 1184 | return 0; |
| 1185 | } |
| 1186 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1187 | static struct platform_driver dm9000_driver = { |
Ben Dooks | 5d22a31 | 2006-06-14 00:09:17 +0100 | [diff] [blame] | 1188 | .driver = { |
| 1189 | .name = "dm9000", |
| 1190 | .owner = THIS_MODULE, |
| 1191 | }, |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1192 | .probe = dm9000_probe, |
| 1193 | .remove = dm9000_drv_remove, |
| 1194 | .suspend = dm9000_drv_suspend, |
| 1195 | .resume = dm9000_drv_resume, |
| 1196 | }; |
| 1197 | |
| 1198 | static int __init |
| 1199 | dm9000_init(void) |
| 1200 | { |
Ben Dooks | 2ae2d77 | 2005-07-23 17:29:38 +0100 | [diff] [blame] | 1201 | printk(KERN_INFO "%s Ethernet Driver\n", CARDNAME); |
| 1202 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1203 | return platform_driver_register(&dm9000_driver); /* search board and register */ |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1204 | } |
| 1205 | |
| 1206 | static void __exit |
| 1207 | dm9000_cleanup(void) |
| 1208 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1209 | platform_driver_unregister(&dm9000_driver); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1210 | } |
| 1211 | |
| 1212 | module_init(dm9000_init); |
| 1213 | module_exit(dm9000_cleanup); |
| 1214 | |
| 1215 | MODULE_AUTHOR("Sascha Hauer, Ben Dooks"); |
| 1216 | MODULE_DESCRIPTION("Davicom DM9000 network driver"); |
| 1217 | MODULE_LICENSE("GPL"); |