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> |
Daniel Mack | 4e4fc05 | 2008-01-23 14:54:50 +0100 | [diff] [blame] | 69 | #include <linux/irq.h> |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 70 | |
| 71 | #include <asm/delay.h> |
| 72 | #include <asm/irq.h> |
| 73 | #include <asm/io.h> |
| 74 | |
| 75 | #include "dm9000.h" |
| 76 | |
| 77 | /* Board/System/Debug information/definition ---------------- */ |
| 78 | |
| 79 | #define DM9000_PHY 0x40 /* PHY address 0x01 */ |
| 80 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 81 | #define CARDNAME "dm9000" |
| 82 | #define PFX CARDNAME ": " |
| 83 | |
| 84 | #define DM9000_TIMER_WUT jiffies+(HZ*2) /* timer wakeup time : 2 second */ |
| 85 | |
| 86 | #define DM9000_DEBUG 0 |
| 87 | |
| 88 | #if DM9000_DEBUG > 2 |
| 89 | #define PRINTK3(args...) printk(CARDNAME ": " args) |
| 90 | #else |
| 91 | #define PRINTK3(args...) do { } while(0) |
| 92 | #endif |
| 93 | |
| 94 | #if DM9000_DEBUG > 1 |
| 95 | #define PRINTK2(args...) printk(CARDNAME ": " args) |
| 96 | #else |
| 97 | #define PRINTK2(args...) do { } while(0) |
| 98 | #endif |
| 99 | |
| 100 | #if DM9000_DEBUG > 0 |
| 101 | #define PRINTK1(args...) printk(CARDNAME ": " args) |
| 102 | #define PRINTK(args...) printk(CARDNAME ": " args) |
| 103 | #else |
| 104 | #define PRINTK1(args...) do { } while(0) |
| 105 | #define PRINTK(args...) printk(KERN_DEBUG args) |
| 106 | #endif |
| 107 | |
Alex Landau | f40d24d | 2007-07-12 12:11:48 +0800 | [diff] [blame] | 108 | #ifdef CONFIG_BLACKFIN |
| 109 | #define readsb insb |
| 110 | #define readsw insw |
| 111 | #define readsl insl |
| 112 | #define writesb outsb |
| 113 | #define writesw outsw |
| 114 | #define writesl outsl |
| 115 | #define DM9000_IRQ_FLAGS (IRQF_SHARED | IRQF_TRIGGER_HIGH) |
| 116 | #else |
Daniel Mack | 4e4fc05 | 2008-01-23 14:54:50 +0100 | [diff] [blame] | 117 | #define DM9000_IRQ_FLAGS (IRQF_SHARED | IRQT_RISING) |
Alex Landau | f40d24d | 2007-07-12 12:11:48 +0800 | [diff] [blame] | 118 | #endif |
| 119 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 120 | /* |
| 121 | * Transmit timeout, default 5 seconds. |
| 122 | */ |
| 123 | static int watchdog = 5000; |
| 124 | module_param(watchdog, int, 0400); |
| 125 | MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds"); |
| 126 | |
| 127 | /* Structure/enum declaration ------------------------------- */ |
| 128 | typedef struct board_info { |
| 129 | |
| 130 | void __iomem *io_addr; /* Register I/O base address */ |
| 131 | void __iomem *io_data; /* Data I/O address */ |
| 132 | u16 irq; /* IRQ */ |
| 133 | |
| 134 | u16 tx_pkt_cnt; |
| 135 | u16 queue_pkt_len; |
| 136 | u16 queue_start_addr; |
| 137 | u16 dbug_cnt; |
| 138 | u8 io_mode; /* 0:word, 2:byte */ |
| 139 | u8 phy_addr; |
Ben Dooks | 33ba509 | 2008-02-05 00:02:01 +0000 | [diff] [blame^] | 140 | unsigned int flags; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 141 | |
| 142 | void (*inblk)(void __iomem *port, void *data, int length); |
| 143 | void (*outblk)(void __iomem *port, void *data, int length); |
| 144 | void (*dumpblk)(void __iomem *port, int length); |
| 145 | |
| 146 | struct resource *addr_res; /* resources found */ |
| 147 | struct resource *data_res; |
| 148 | struct resource *addr_req; /* resources requested */ |
| 149 | struct resource *data_req; |
| 150 | struct resource *irq_res; |
| 151 | |
| 152 | struct timer_list timer; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 153 | unsigned char srom[128]; |
| 154 | spinlock_t lock; |
| 155 | |
| 156 | struct mii_if_info mii; |
| 157 | u32 msg_enable; |
| 158 | } board_info_t; |
| 159 | |
| 160 | /* function declaration ------------------------------------- */ |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 161 | static int dm9000_probe(struct platform_device *); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 162 | static int dm9000_open(struct net_device *); |
| 163 | static int dm9000_start_xmit(struct sk_buff *, struct net_device *); |
| 164 | static int dm9000_stop(struct net_device *); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 165 | |
| 166 | |
| 167 | static void dm9000_timer(unsigned long); |
| 168 | static void dm9000_init_dm9000(struct net_device *); |
| 169 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 170 | static irqreturn_t dm9000_interrupt(int, void *); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 171 | |
| 172 | static int dm9000_phy_read(struct net_device *dev, int phyaddr_unsused, int reg); |
| 173 | static void dm9000_phy_write(struct net_device *dev, int phyaddr_unused, int reg, |
| 174 | int value); |
| 175 | static u16 read_srom_word(board_info_t *, int); |
| 176 | static void dm9000_rx(struct net_device *); |
| 177 | static void dm9000_hash_table(struct net_device *); |
| 178 | |
| 179 | //#define DM9000_PROGRAM_EEPROM |
| 180 | #ifdef DM9000_PROGRAM_EEPROM |
| 181 | static void program_eeprom(board_info_t * db); |
| 182 | #endif |
| 183 | /* DM9000 network board routine ---------------------------- */ |
| 184 | |
| 185 | static void |
| 186 | dm9000_reset(board_info_t * db) |
| 187 | { |
| 188 | PRINTK1("dm9000x: resetting\n"); |
| 189 | /* RESET device */ |
| 190 | writeb(DM9000_NCR, db->io_addr); |
| 191 | udelay(200); |
| 192 | writeb(NCR_RST, db->io_data); |
| 193 | udelay(200); |
| 194 | } |
| 195 | |
| 196 | /* |
| 197 | * Read a byte from I/O port |
| 198 | */ |
| 199 | static u8 |
| 200 | ior(board_info_t * db, int reg) |
| 201 | { |
| 202 | writeb(reg, db->io_addr); |
| 203 | return readb(db->io_data); |
| 204 | } |
| 205 | |
| 206 | /* |
| 207 | * Write a byte to I/O port |
| 208 | */ |
| 209 | |
| 210 | static void |
| 211 | iow(board_info_t * db, int reg, int value) |
| 212 | { |
| 213 | writeb(reg, db->io_addr); |
| 214 | writeb(value, db->io_data); |
| 215 | } |
| 216 | |
| 217 | /* routines for sending block to chip */ |
| 218 | |
| 219 | static void dm9000_outblk_8bit(void __iomem *reg, void *data, int count) |
| 220 | { |
| 221 | writesb(reg, data, count); |
| 222 | } |
| 223 | |
| 224 | static void dm9000_outblk_16bit(void __iomem *reg, void *data, int count) |
| 225 | { |
| 226 | writesw(reg, data, (count+1) >> 1); |
| 227 | } |
| 228 | |
| 229 | static void dm9000_outblk_32bit(void __iomem *reg, void *data, int count) |
| 230 | { |
| 231 | writesl(reg, data, (count+3) >> 2); |
| 232 | } |
| 233 | |
| 234 | /* input block from chip to memory */ |
| 235 | |
| 236 | static void dm9000_inblk_8bit(void __iomem *reg, void *data, int count) |
| 237 | { |
Sascha Hauer | 5f6b551 | 2005-06-20 15:32:51 -0700 | [diff] [blame] | 238 | readsb(reg, data, count); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 239 | } |
| 240 | |
| 241 | |
| 242 | static void dm9000_inblk_16bit(void __iomem *reg, void *data, int count) |
| 243 | { |
| 244 | readsw(reg, data, (count+1) >> 1); |
| 245 | } |
| 246 | |
| 247 | static void dm9000_inblk_32bit(void __iomem *reg, void *data, int count) |
| 248 | { |
| 249 | readsl(reg, data, (count+3) >> 2); |
| 250 | } |
| 251 | |
| 252 | /* dump block from chip to null */ |
| 253 | |
| 254 | static void dm9000_dumpblk_8bit(void __iomem *reg, int count) |
| 255 | { |
| 256 | int i; |
| 257 | int tmp; |
| 258 | |
| 259 | for (i = 0; i < count; i++) |
| 260 | tmp = readb(reg); |
| 261 | } |
| 262 | |
| 263 | static void dm9000_dumpblk_16bit(void __iomem *reg, int count) |
| 264 | { |
| 265 | int i; |
| 266 | int tmp; |
| 267 | |
| 268 | count = (count + 1) >> 1; |
| 269 | |
| 270 | for (i = 0; i < count; i++) |
| 271 | tmp = readw(reg); |
| 272 | } |
| 273 | |
| 274 | static void dm9000_dumpblk_32bit(void __iomem *reg, int count) |
| 275 | { |
| 276 | int i; |
| 277 | int tmp; |
| 278 | |
| 279 | count = (count + 3) >> 2; |
| 280 | |
| 281 | for (i = 0; i < count; i++) |
| 282 | tmp = readl(reg); |
| 283 | } |
| 284 | |
| 285 | /* dm9000_set_io |
| 286 | * |
| 287 | * select the specified set of io routines to use with the |
| 288 | * device |
| 289 | */ |
| 290 | |
| 291 | static void dm9000_set_io(struct board_info *db, int byte_width) |
| 292 | { |
| 293 | /* use the size of the data resource to work out what IO |
| 294 | * routines we want to use |
| 295 | */ |
| 296 | |
| 297 | switch (byte_width) { |
| 298 | case 1: |
| 299 | db->dumpblk = dm9000_dumpblk_8bit; |
| 300 | db->outblk = dm9000_outblk_8bit; |
| 301 | db->inblk = dm9000_inblk_8bit; |
| 302 | break; |
| 303 | |
| 304 | case 2: |
| 305 | db->dumpblk = dm9000_dumpblk_16bit; |
| 306 | db->outblk = dm9000_outblk_16bit; |
| 307 | db->inblk = dm9000_inblk_16bit; |
| 308 | break; |
| 309 | |
| 310 | case 3: |
| 311 | printk(KERN_ERR PFX ": 3 byte IO, falling back to 16bit\n"); |
| 312 | db->dumpblk = dm9000_dumpblk_16bit; |
| 313 | db->outblk = dm9000_outblk_16bit; |
| 314 | db->inblk = dm9000_inblk_16bit; |
| 315 | break; |
| 316 | |
| 317 | case 4: |
| 318 | default: |
| 319 | db->dumpblk = dm9000_dumpblk_32bit; |
| 320 | db->outblk = dm9000_outblk_32bit; |
| 321 | db->inblk = dm9000_inblk_32bit; |
| 322 | break; |
| 323 | } |
| 324 | } |
| 325 | |
| 326 | |
| 327 | /* Our watchdog timed out. Called by the networking layer */ |
| 328 | static void dm9000_timeout(struct net_device *dev) |
| 329 | { |
| 330 | board_info_t *db = (board_info_t *) dev->priv; |
| 331 | u8 reg_save; |
| 332 | unsigned long flags; |
| 333 | |
| 334 | /* Save previous register address */ |
| 335 | reg_save = readb(db->io_addr); |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 336 | spin_lock_irqsave(&db->lock,flags); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 337 | |
| 338 | netif_stop_queue(dev); |
| 339 | dm9000_reset(db); |
| 340 | dm9000_init_dm9000(dev); |
| 341 | /* We can accept TX packets again */ |
| 342 | dev->trans_start = jiffies; |
| 343 | netif_wake_queue(dev); |
| 344 | |
| 345 | /* Restore previous register address */ |
| 346 | writeb(reg_save, db->io_addr); |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 347 | spin_unlock_irqrestore(&db->lock,flags); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 348 | } |
| 349 | |
Kevin Hao | 2fd0e33 | 2006-08-14 23:00:15 -0700 | [diff] [blame] | 350 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 351 | /* |
| 352 | *Used by netconsole |
| 353 | */ |
| 354 | static void dm9000_poll_controller(struct net_device *dev) |
| 355 | { |
| 356 | disable_irq(dev->irq); |
Al Viro | 2843114 | 2006-10-08 15:00:12 +0100 | [diff] [blame] | 357 | dm9000_interrupt(dev->irq,dev); |
Kevin Hao | 2fd0e33 | 2006-08-14 23:00:15 -0700 | [diff] [blame] | 358 | enable_irq(dev->irq); |
| 359 | } |
| 360 | #endif |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 361 | |
| 362 | /* dm9000_release_board |
| 363 | * |
| 364 | * release a board, and any mapped resources |
| 365 | */ |
| 366 | |
| 367 | static void |
| 368 | dm9000_release_board(struct platform_device *pdev, struct board_info *db) |
| 369 | { |
| 370 | if (db->data_res == NULL) { |
| 371 | if (db->addr_res != NULL) |
| 372 | release_mem_region((unsigned long)db->io_addr, 4); |
| 373 | return; |
| 374 | } |
| 375 | |
| 376 | /* unmap our resources */ |
| 377 | |
| 378 | iounmap(db->io_addr); |
| 379 | iounmap(db->io_data); |
| 380 | |
| 381 | /* release the resources */ |
| 382 | |
| 383 | if (db->data_req != NULL) { |
| 384 | release_resource(db->data_req); |
| 385 | kfree(db->data_req); |
| 386 | } |
| 387 | |
Dirk Opfer | 5198548 | 2006-09-06 19:53:32 +0200 | [diff] [blame] | 388 | if (db->addr_req != NULL) { |
| 389 | release_resource(db->addr_req); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 390 | kfree(db->addr_req); |
| 391 | } |
| 392 | } |
| 393 | |
| 394 | #define res_size(_r) (((_r)->end - (_r)->start) + 1) |
| 395 | |
| 396 | /* |
| 397 | * Search DM9000 board, allocate space and register it |
| 398 | */ |
| 399 | static int |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 400 | dm9000_probe(struct platform_device *pdev) |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 401 | { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 402 | struct dm9000_plat_data *pdata = pdev->dev.platform_data; |
| 403 | struct board_info *db; /* Point a board information structure */ |
| 404 | struct net_device *ndev; |
| 405 | unsigned long base; |
| 406 | int ret = 0; |
| 407 | int iosize; |
| 408 | int i; |
| 409 | u32 id_val; |
| 410 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 411 | /* Init network device */ |
| 412 | ndev = alloc_etherdev(sizeof (struct board_info)); |
| 413 | if (!ndev) { |
| 414 | printk("%s: could not allocate device.\n", CARDNAME); |
| 415 | return -ENOMEM; |
| 416 | } |
| 417 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 418 | SET_NETDEV_DEV(ndev, &pdev->dev); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 419 | |
| 420 | PRINTK2("dm9000_probe()"); |
| 421 | |
| 422 | /* setup board info structure */ |
| 423 | db = (struct board_info *) ndev->priv; |
| 424 | memset(db, 0, sizeof (*db)); |
| 425 | |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 426 | spin_lock_init(&db->lock); |
| 427 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 428 | if (pdev->num_resources < 2) { |
| 429 | ret = -ENODEV; |
| 430 | goto out; |
Ben Dooks | b4ed03f | 2006-06-13 23:47:19 +0100 | [diff] [blame] | 431 | } else if (pdev->num_resources == 2) { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 432 | base = pdev->resource[0].start; |
| 433 | |
| 434 | if (!request_mem_region(base, 4, ndev->name)) { |
| 435 | ret = -EBUSY; |
| 436 | goto out; |
| 437 | } |
| 438 | |
| 439 | ndev->base_addr = base; |
| 440 | ndev->irq = pdev->resource[1].start; |
Ben Dooks | b4ed03f | 2006-06-13 23:47:19 +0100 | [diff] [blame] | 441 | db->io_addr = (void __iomem *)base; |
| 442 | db->io_data = (void __iomem *)(base + 4); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 443 | |
Alex Landau | f40d24d | 2007-07-12 12:11:48 +0800 | [diff] [blame] | 444 | /* ensure at least we have a default set of IO routines */ |
| 445 | dm9000_set_io(db, 2); |
| 446 | |
Ben Dooks | b4ed03f | 2006-06-13 23:47:19 +0100 | [diff] [blame] | 447 | } else { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 448 | db->addr_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 449 | db->data_res = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
| 450 | db->irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| 451 | |
Ben Dooks | b4ed03f | 2006-06-13 23:47:19 +0100 | [diff] [blame] | 452 | if (db->addr_res == NULL || db->data_res == NULL || |
| 453 | db->irq_res == NULL) { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 454 | printk(KERN_ERR PFX "insufficient resources\n"); |
| 455 | ret = -ENOENT; |
| 456 | goto out; |
| 457 | } |
| 458 | |
| 459 | i = res_size(db->addr_res); |
| 460 | db->addr_req = request_mem_region(db->addr_res->start, i, |
| 461 | pdev->name); |
| 462 | |
| 463 | if (db->addr_req == NULL) { |
| 464 | printk(KERN_ERR PFX "cannot claim address reg area\n"); |
| 465 | ret = -EIO; |
| 466 | goto out; |
| 467 | } |
| 468 | |
| 469 | db->io_addr = ioremap(db->addr_res->start, i); |
| 470 | |
| 471 | if (db->io_addr == NULL) { |
| 472 | printk(KERN_ERR "failed to ioremap address reg\n"); |
| 473 | ret = -EINVAL; |
| 474 | goto out; |
| 475 | } |
| 476 | |
| 477 | iosize = res_size(db->data_res); |
| 478 | db->data_req = request_mem_region(db->data_res->start, iosize, |
| 479 | pdev->name); |
| 480 | |
| 481 | if (db->data_req == NULL) { |
| 482 | printk(KERN_ERR PFX "cannot claim data reg area\n"); |
| 483 | ret = -EIO; |
| 484 | goto out; |
| 485 | } |
| 486 | |
| 487 | db->io_data = ioremap(db->data_res->start, iosize); |
| 488 | |
| 489 | if (db->io_data == NULL) { |
| 490 | printk(KERN_ERR "failed to ioremap data reg\n"); |
| 491 | ret = -EINVAL; |
| 492 | goto out; |
| 493 | } |
| 494 | |
| 495 | /* fill in parameters for net-dev structure */ |
| 496 | |
| 497 | ndev->base_addr = (unsigned long)db->io_addr; |
| 498 | ndev->irq = db->irq_res->start; |
| 499 | |
| 500 | /* ensure at least we have a default set of IO routines */ |
| 501 | dm9000_set_io(db, iosize); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 502 | } |
| 503 | |
| 504 | /* check to see if anything is being over-ridden */ |
| 505 | if (pdata != NULL) { |
| 506 | /* check to see if the driver wants to over-ride the |
| 507 | * default IO width */ |
| 508 | |
| 509 | if (pdata->flags & DM9000_PLATF_8BITONLY) |
| 510 | dm9000_set_io(db, 1); |
| 511 | |
| 512 | if (pdata->flags & DM9000_PLATF_16BITONLY) |
| 513 | dm9000_set_io(db, 2); |
| 514 | |
| 515 | if (pdata->flags & DM9000_PLATF_32BITONLY) |
| 516 | dm9000_set_io(db, 4); |
| 517 | |
| 518 | /* check to see if there are any IO routine |
| 519 | * over-rides */ |
| 520 | |
| 521 | if (pdata->inblk != NULL) |
| 522 | db->inblk = pdata->inblk; |
| 523 | |
| 524 | if (pdata->outblk != NULL) |
| 525 | db->outblk = pdata->outblk; |
| 526 | |
| 527 | if (pdata->dumpblk != NULL) |
| 528 | db->dumpblk = pdata->dumpblk; |
Ben Dooks | 33ba509 | 2008-02-05 00:02:01 +0000 | [diff] [blame^] | 529 | |
| 530 | db->flags = pdata->flags; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 531 | } |
| 532 | |
| 533 | dm9000_reset(db); |
| 534 | |
| 535 | /* try two times, DM9000 sometimes gets the first read wrong */ |
| 536 | for (i = 0; i < 2; i++) { |
| 537 | id_val = ior(db, DM9000_VIDL); |
| 538 | id_val |= (u32)ior(db, DM9000_VIDH) << 8; |
| 539 | id_val |= (u32)ior(db, DM9000_PIDL) << 16; |
| 540 | id_val |= (u32)ior(db, DM9000_PIDH) << 24; |
| 541 | |
| 542 | if (id_val == DM9000_ID) |
| 543 | break; |
| 544 | printk("%s: read wrong id 0x%08x\n", CARDNAME, id_val); |
| 545 | } |
| 546 | |
| 547 | if (id_val != DM9000_ID) { |
| 548 | printk("%s: wrong id: 0x%08x\n", CARDNAME, id_val); |
Mike Rapoport | 418d6f8 | 2007-10-18 09:23:11 +0200 | [diff] [blame] | 549 | ret = -ENODEV; |
| 550 | goto out; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 551 | } |
| 552 | |
| 553 | /* from this point we assume that we have found a DM9000 */ |
| 554 | |
| 555 | /* driver system function */ |
| 556 | ether_setup(ndev); |
| 557 | |
| 558 | ndev->open = &dm9000_open; |
| 559 | ndev->hard_start_xmit = &dm9000_start_xmit; |
| 560 | ndev->tx_timeout = &dm9000_timeout; |
| 561 | ndev->watchdog_timeo = msecs_to_jiffies(watchdog); |
| 562 | ndev->stop = &dm9000_stop; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 563 | ndev->set_multicast_list = &dm9000_hash_table; |
Kevin Hao | 2fd0e33 | 2006-08-14 23:00:15 -0700 | [diff] [blame] | 564 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 565 | ndev->poll_controller = &dm9000_poll_controller; |
| 566 | #endif |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 567 | |
| 568 | #ifdef DM9000_PROGRAM_EEPROM |
| 569 | program_eeprom(db); |
| 570 | #endif |
| 571 | db->msg_enable = NETIF_MSG_LINK; |
| 572 | db->mii.phy_id_mask = 0x1f; |
| 573 | db->mii.reg_num_mask = 0x1f; |
| 574 | db->mii.force_media = 0; |
| 575 | db->mii.full_duplex = 0; |
| 576 | db->mii.dev = ndev; |
| 577 | db->mii.mdio_read = dm9000_phy_read; |
| 578 | db->mii.mdio_write = dm9000_phy_write; |
| 579 | |
| 580 | /* Read SROM content */ |
| 581 | for (i = 0; i < 64; i++) |
| 582 | ((u16 *) db->srom)[i] = read_srom_word(db, i); |
| 583 | |
| 584 | /* Set Node Address */ |
| 585 | for (i = 0; i < 6; i++) |
| 586 | ndev->dev_addr[i] = db->srom[i]; |
| 587 | |
Ben Dooks | 5b55dda | 2006-06-13 23:50:15 +0100 | [diff] [blame] | 588 | if (!is_valid_ether_addr(ndev->dev_addr)) { |
| 589 | /* try reading from mac */ |
| 590 | |
| 591 | for (i = 0; i < 6; i++) |
| 592 | ndev->dev_addr[i] = ior(db, i+DM9000_PAR); |
| 593 | } |
| 594 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 595 | if (!is_valid_ether_addr(ndev->dev_addr)) |
| 596 | printk("%s: Invalid ethernet MAC address. Please " |
| 597 | "set using ifconfig\n", ndev->name); |
| 598 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 599 | platform_set_drvdata(pdev, ndev); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 600 | ret = register_netdev(ndev); |
| 601 | |
| 602 | if (ret == 0) { |
Joe Perches | 0795af5 | 2007-10-03 17:59:30 -0700 | [diff] [blame] | 603 | DECLARE_MAC_BUF(mac); |
| 604 | printk("%s: dm9000 at %p,%p IRQ %d MAC: %s\n", |
| 605 | ndev->name, db->io_addr, db->io_data, ndev->irq, |
| 606 | print_mac(mac, ndev->dev_addr)); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 607 | } |
| 608 | return 0; |
| 609 | |
Mike Rapoport | 418d6f8 | 2007-10-18 09:23:11 +0200 | [diff] [blame] | 610 | out: |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 611 | printk("%s: not found (%d).\n", CARDNAME, ret); |
| 612 | |
| 613 | dm9000_release_board(pdev, db); |
Ben Dooks | 9fd9f9b | 2007-05-07 11:13:25 +0000 | [diff] [blame] | 614 | free_netdev(ndev); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 615 | |
| 616 | return ret; |
| 617 | } |
| 618 | |
| 619 | /* |
| 620 | * Open the interface. |
| 621 | * The interface is opened whenever "ifconfig" actives it. |
| 622 | */ |
| 623 | static int |
| 624 | dm9000_open(struct net_device *dev) |
| 625 | { |
| 626 | board_info_t *db = (board_info_t *) dev->priv; |
| 627 | |
| 628 | PRINTK2("entering dm9000_open\n"); |
| 629 | |
Alex Landau | f40d24d | 2007-07-12 12:11:48 +0800 | [diff] [blame] | 630 | 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] | 631 | return -EAGAIN; |
| 632 | |
| 633 | /* Initialize DM9000 board */ |
| 634 | dm9000_reset(db); |
| 635 | dm9000_init_dm9000(dev); |
| 636 | |
| 637 | /* Init driver variable */ |
| 638 | db->dbug_cnt = 0; |
| 639 | |
| 640 | /* set and active a timer process */ |
| 641 | init_timer(&db->timer); |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 642 | db->timer.expires = DM9000_TIMER_WUT; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 643 | db->timer.data = (unsigned long) dev; |
| 644 | db->timer.function = &dm9000_timer; |
| 645 | add_timer(&db->timer); |
| 646 | |
| 647 | mii_check_media(&db->mii, netif_msg_link(db), 1); |
| 648 | netif_start_queue(dev); |
| 649 | |
| 650 | return 0; |
| 651 | } |
| 652 | |
| 653 | /* |
| 654 | * Initilize dm9000 board |
| 655 | */ |
| 656 | static void |
| 657 | dm9000_init_dm9000(struct net_device *dev) |
| 658 | { |
| 659 | board_info_t *db = (board_info_t *) dev->priv; |
| 660 | |
| 661 | PRINTK1("entering %s\n",__FUNCTION__); |
| 662 | |
| 663 | /* I/O mode */ |
| 664 | db->io_mode = ior(db, DM9000_ISR) >> 6; /* ISR bit7:6 keeps I/O mode */ |
| 665 | |
| 666 | /* GPIO0 on pre-activate PHY */ |
| 667 | iow(db, DM9000_GPR, 0); /* REG_1F bit0 activate phyxcer */ |
| 668 | iow(db, DM9000_GPCR, GPCR_GEP_CNTL); /* Let GPIO0 output */ |
| 669 | iow(db, DM9000_GPR, 0); /* Enable PHY */ |
| 670 | |
Ben Dooks | 33ba509 | 2008-02-05 00:02:01 +0000 | [diff] [blame^] | 671 | if (db->flags & DM9000_PLATF_EXT_PHY) |
| 672 | iow(db, DM9000_NCR, NCR_EXT_PHY); |
| 673 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 674 | /* Program operating register */ |
| 675 | iow(db, DM9000_TCR, 0); /* TX Polling clear */ |
| 676 | iow(db, DM9000_BPTR, 0x3f); /* Less 3Kb, 200us */ |
| 677 | iow(db, DM9000_FCR, 0xff); /* Flow Control */ |
| 678 | iow(db, DM9000_SMCR, 0); /* Special Mode */ |
| 679 | /* clear TX status */ |
| 680 | iow(db, DM9000_NSR, NSR_WAKEST | NSR_TX2END | NSR_TX1END); |
| 681 | iow(db, DM9000_ISR, ISR_CLR_STATUS); /* Clear interrupt status */ |
| 682 | |
| 683 | /* Set address filter table */ |
| 684 | dm9000_hash_table(dev); |
| 685 | |
| 686 | /* Activate DM9000 */ |
| 687 | iow(db, DM9000_RCR, RCR_DIS_LONG | RCR_DIS_CRC | RCR_RXEN); |
| 688 | /* Enable TX/RX interrupt mask */ |
| 689 | iow(db, DM9000_IMR, IMR_PAR | IMR_PTM | IMR_PRM); |
| 690 | |
| 691 | /* Init Driver variable */ |
| 692 | db->tx_pkt_cnt = 0; |
| 693 | db->queue_pkt_len = 0; |
| 694 | dev->trans_start = 0; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 695 | } |
| 696 | |
| 697 | /* |
| 698 | * Hardware start transmission. |
| 699 | * Send a packet to media from the upper layer. |
| 700 | */ |
| 701 | static int |
| 702 | dm9000_start_xmit(struct sk_buff *skb, struct net_device *dev) |
| 703 | { |
Florian Westphal | c46ac94 | 2007-08-21 01:33:42 +0200 | [diff] [blame] | 704 | unsigned long flags; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 705 | board_info_t *db = (board_info_t *) dev->priv; |
| 706 | |
| 707 | PRINTK3("dm9000_start_xmit\n"); |
| 708 | |
| 709 | if (db->tx_pkt_cnt > 1) |
| 710 | return 1; |
| 711 | |
Florian Westphal | c46ac94 | 2007-08-21 01:33:42 +0200 | [diff] [blame] | 712 | spin_lock_irqsave(&db->lock, flags); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 713 | |
| 714 | /* Move data to DM9000 TX RAM */ |
| 715 | writeb(DM9000_MWCMD, db->io_addr); |
| 716 | |
| 717 | (db->outblk)(db->io_data, skb->data, skb->len); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 718 | dev->stats.tx_bytes += skb->len; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 719 | |
Florian Westphal | c46ac94 | 2007-08-21 01:33:42 +0200 | [diff] [blame] | 720 | db->tx_pkt_cnt++; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 721 | /* TX control: First packet immediately send, second packet queue */ |
Florian Westphal | c46ac94 | 2007-08-21 01:33:42 +0200 | [diff] [blame] | 722 | if (db->tx_pkt_cnt == 1) { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 723 | /* Set TX length to DM9000 */ |
| 724 | iow(db, DM9000_TXPLL, skb->len & 0xff); |
| 725 | iow(db, DM9000_TXPLH, (skb->len >> 8) & 0xff); |
| 726 | |
| 727 | /* Issue TX polling command */ |
| 728 | iow(db, DM9000_TCR, TCR_TXREQ); /* Cleared after TX complete */ |
| 729 | |
| 730 | dev->trans_start = jiffies; /* save the time stamp */ |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 731 | } else { |
| 732 | /* Second packet */ |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 733 | db->queue_pkt_len = skb->len; |
Florian Westphal | c46ac94 | 2007-08-21 01:33:42 +0200 | [diff] [blame] | 734 | netif_stop_queue(dev); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 735 | } |
| 736 | |
Florian Westphal | c46ac94 | 2007-08-21 01:33:42 +0200 | [diff] [blame] | 737 | spin_unlock_irqrestore(&db->lock, flags); |
| 738 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 739 | /* free this SKB */ |
| 740 | dev_kfree_skb(skb); |
| 741 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 742 | return 0; |
| 743 | } |
| 744 | |
| 745 | static void |
| 746 | dm9000_shutdown(struct net_device *dev) |
| 747 | { |
| 748 | board_info_t *db = (board_info_t *) dev->priv; |
| 749 | |
| 750 | /* RESET device */ |
| 751 | dm9000_phy_write(dev, 0, MII_BMCR, BMCR_RESET); /* PHY RESET */ |
| 752 | iow(db, DM9000_GPR, 0x01); /* Power-Down PHY */ |
| 753 | iow(db, DM9000_IMR, IMR_PAR); /* Disable all interrupt */ |
| 754 | iow(db, DM9000_RCR, 0x00); /* Disable RX */ |
| 755 | } |
| 756 | |
| 757 | /* |
| 758 | * Stop the interface. |
| 759 | * The interface is stopped when it is brought. |
| 760 | */ |
| 761 | static int |
| 762 | dm9000_stop(struct net_device *ndev) |
| 763 | { |
| 764 | board_info_t *db = (board_info_t *) ndev->priv; |
| 765 | |
| 766 | PRINTK1("entering %s\n",__FUNCTION__); |
| 767 | |
| 768 | /* deleted timer */ |
| 769 | del_timer(&db->timer); |
| 770 | |
| 771 | netif_stop_queue(ndev); |
| 772 | netif_carrier_off(ndev); |
| 773 | |
| 774 | /* free interrupt */ |
| 775 | free_irq(ndev->irq, ndev); |
| 776 | |
| 777 | dm9000_shutdown(ndev); |
| 778 | |
| 779 | return 0; |
| 780 | } |
| 781 | |
| 782 | /* |
| 783 | * DM9000 interrupt handler |
| 784 | * receive the packet to upper layer, free the transmitted packet |
| 785 | */ |
| 786 | |
Ben Dooks | 5d22a31 | 2006-06-14 00:09:17 +0100 | [diff] [blame] | 787 | static void |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 788 | dm9000_tx_done(struct net_device *dev, board_info_t * db) |
| 789 | { |
| 790 | int tx_status = ior(db, DM9000_NSR); /* Got TX status */ |
| 791 | |
| 792 | if (tx_status & (NSR_TX2END | NSR_TX1END)) { |
| 793 | /* One packet sent complete */ |
| 794 | db->tx_pkt_cnt--; |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 795 | dev->stats.tx_packets++; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 796 | |
| 797 | /* Queue packet check & send */ |
| 798 | if (db->tx_pkt_cnt > 0) { |
| 799 | iow(db, DM9000_TXPLL, db->queue_pkt_len & 0xff); |
| 800 | iow(db, DM9000_TXPLH, (db->queue_pkt_len >> 8) & 0xff); |
| 801 | iow(db, DM9000_TCR, TCR_TXREQ); |
| 802 | dev->trans_start = jiffies; |
| 803 | } |
| 804 | netif_wake_queue(dev); |
| 805 | } |
| 806 | } |
| 807 | |
| 808 | static irqreturn_t |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 809 | dm9000_interrupt(int irq, void *dev_id) |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 810 | { |
| 811 | struct net_device *dev = dev_id; |
| 812 | board_info_t *db; |
| 813 | int int_status; |
| 814 | u8 reg_save; |
| 815 | |
| 816 | PRINTK3("entering %s\n",__FUNCTION__); |
| 817 | |
| 818 | if (!dev) { |
| 819 | PRINTK1("dm9000_interrupt() without DEVICE arg\n"); |
| 820 | return IRQ_HANDLED; |
| 821 | } |
| 822 | |
| 823 | /* A real interrupt coming */ |
| 824 | db = (board_info_t *) dev->priv; |
| 825 | spin_lock(&db->lock); |
| 826 | |
| 827 | /* Save previous register address */ |
| 828 | reg_save = readb(db->io_addr); |
| 829 | |
| 830 | /* Disable all interrupts */ |
| 831 | iow(db, DM9000_IMR, IMR_PAR); |
| 832 | |
| 833 | /* Got DM9000 interrupt status */ |
| 834 | int_status = ior(db, DM9000_ISR); /* Got ISR */ |
| 835 | iow(db, DM9000_ISR, int_status); /* Clear ISR status */ |
| 836 | |
| 837 | /* Received the coming packet */ |
| 838 | if (int_status & ISR_PRS) |
| 839 | dm9000_rx(dev); |
| 840 | |
| 841 | /* Trnasmit Interrupt check */ |
| 842 | if (int_status & ISR_PTS) |
| 843 | dm9000_tx_done(dev, db); |
| 844 | |
| 845 | /* Re-enable interrupt mask */ |
| 846 | iow(db, DM9000_IMR, IMR_PAR | IMR_PTM | IMR_PRM); |
| 847 | |
| 848 | /* Restore previous register address */ |
| 849 | writeb(reg_save, db->io_addr); |
| 850 | |
| 851 | spin_unlock(&db->lock); |
| 852 | |
| 853 | return IRQ_HANDLED; |
| 854 | } |
| 855 | |
| 856 | /* |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 857 | * A periodic timer routine |
| 858 | * Dynamic media sense, allocated Rx buffer... |
| 859 | */ |
| 860 | static void |
| 861 | dm9000_timer(unsigned long data) |
| 862 | { |
| 863 | struct net_device *dev = (struct net_device *) data; |
| 864 | board_info_t *db = (board_info_t *) dev->priv; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 865 | |
| 866 | PRINTK3("dm9000_timer()\n"); |
| 867 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 868 | mii_check_media(&db->mii, netif_msg_link(db), 0); |
| 869 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 870 | /* Set timer again */ |
| 871 | db->timer.expires = DM9000_TIMER_WUT; |
| 872 | add_timer(&db->timer); |
| 873 | } |
| 874 | |
| 875 | struct dm9000_rxhdr { |
Ben Dooks | 9311657 | 2008-02-05 00:02:00 +0000 | [diff] [blame] | 876 | u8 RxPktReady; |
| 877 | u8 RxStatus; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 878 | u16 RxLen; |
| 879 | } __attribute__((__packed__)); |
| 880 | |
| 881 | /* |
| 882 | * Received a packet and pass to upper layer |
| 883 | */ |
| 884 | static void |
| 885 | dm9000_rx(struct net_device *dev) |
| 886 | { |
| 887 | board_info_t *db = (board_info_t *) dev->priv; |
| 888 | struct dm9000_rxhdr rxhdr; |
| 889 | struct sk_buff *skb; |
| 890 | u8 rxbyte, *rdptr; |
Richard Knutsson | 6478fac | 2007-05-01 18:43:27 +0200 | [diff] [blame] | 891 | bool GoodPacket; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 892 | int RxLen; |
| 893 | |
| 894 | /* Check packet ready or not */ |
| 895 | do { |
| 896 | ior(db, DM9000_MRCMDX); /* Dummy read */ |
| 897 | |
| 898 | /* Get most updated data */ |
| 899 | rxbyte = readb(db->io_data); |
| 900 | |
| 901 | /* Status check: this byte must be 0 or 1 */ |
| 902 | if (rxbyte > DM9000_PKT_RDY) { |
| 903 | printk("status check failed: %d\n", rxbyte); |
| 904 | iow(db, DM9000_RCR, 0x00); /* Stop Device */ |
| 905 | iow(db, DM9000_ISR, IMR_PAR); /* Stop INT request */ |
| 906 | return; |
| 907 | } |
| 908 | |
| 909 | if (rxbyte != DM9000_PKT_RDY) |
| 910 | return; |
| 911 | |
| 912 | /* A packet ready now & Get status/length */ |
Richard Knutsson | 6478fac | 2007-05-01 18:43:27 +0200 | [diff] [blame] | 913 | GoodPacket = true; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 914 | writeb(DM9000_MRCMD, db->io_addr); |
| 915 | |
| 916 | (db->inblk)(db->io_data, &rxhdr, sizeof(rxhdr)); |
| 917 | |
Ben Dooks | 9311657 | 2008-02-05 00:02:00 +0000 | [diff] [blame] | 918 | RxLen = le16_to_cpu(rxhdr.RxLen); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 919 | |
| 920 | /* Packet Status check */ |
| 921 | if (RxLen < 0x40) { |
Richard Knutsson | 6478fac | 2007-05-01 18:43:27 +0200 | [diff] [blame] | 922 | GoodPacket = false; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 923 | PRINTK1("Bad Packet received (runt)\n"); |
| 924 | } |
| 925 | |
| 926 | if (RxLen > DM9000_PKT_MAX) { |
| 927 | PRINTK1("RST: RX Len:%x\n", RxLen); |
| 928 | } |
| 929 | |
Ben Dooks | 9311657 | 2008-02-05 00:02:00 +0000 | [diff] [blame] | 930 | if (rxhdr.RxStatus & 0xbf) { |
Richard Knutsson | 6478fac | 2007-05-01 18:43:27 +0200 | [diff] [blame] | 931 | GoodPacket = false; |
Ben Dooks | 9311657 | 2008-02-05 00:02:00 +0000 | [diff] [blame] | 932 | if (rxhdr.RxStatus & 0x01) { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 933 | PRINTK1("fifo error\n"); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 934 | dev->stats.rx_fifo_errors++; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 935 | } |
Ben Dooks | 9311657 | 2008-02-05 00:02:00 +0000 | [diff] [blame] | 936 | if (rxhdr.RxStatus & 0x02) { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 937 | PRINTK1("crc error\n"); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 938 | dev->stats.rx_crc_errors++; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 939 | } |
Ben Dooks | 9311657 | 2008-02-05 00:02:00 +0000 | [diff] [blame] | 940 | if (rxhdr.RxStatus & 0x80) { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 941 | PRINTK1("length error\n"); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 942 | dev->stats.rx_length_errors++; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 943 | } |
| 944 | } |
| 945 | |
| 946 | /* Move data from DM9000 */ |
| 947 | if (GoodPacket |
| 948 | && ((skb = dev_alloc_skb(RxLen + 4)) != NULL)) { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 949 | skb_reserve(skb, 2); |
| 950 | rdptr = (u8 *) skb_put(skb, RxLen - 4); |
| 951 | |
| 952 | /* Read received packet from RX SRAM */ |
| 953 | |
| 954 | (db->inblk)(db->io_data, rdptr, RxLen); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 955 | dev->stats.rx_bytes += RxLen; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 956 | |
| 957 | /* Pass to upper layer */ |
| 958 | skb->protocol = eth_type_trans(skb, dev); |
| 959 | netif_rx(skb); |
Jeff Garzik | 09f75cd | 2007-10-03 17:41:50 -0700 | [diff] [blame] | 960 | dev->stats.rx_packets++; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 961 | |
| 962 | } else { |
| 963 | /* need to dump the packet's data */ |
| 964 | |
| 965 | (db->dumpblk)(db->io_data, RxLen); |
| 966 | } |
| 967 | } while (rxbyte == DM9000_PKT_RDY); |
| 968 | } |
| 969 | |
| 970 | /* |
| 971 | * Read a word data from SROM |
| 972 | */ |
| 973 | static u16 |
| 974 | read_srom_word(board_info_t * db, int offset) |
| 975 | { |
| 976 | iow(db, DM9000_EPAR, offset); |
| 977 | iow(db, DM9000_EPCR, EPCR_ERPRR); |
| 978 | mdelay(8); /* according to the datasheet 200us should be enough, |
| 979 | but it doesn't work */ |
| 980 | iow(db, DM9000_EPCR, 0x0); |
| 981 | return (ior(db, DM9000_EPDRL) + (ior(db, DM9000_EPDRH) << 8)); |
| 982 | } |
| 983 | |
| 984 | #ifdef DM9000_PROGRAM_EEPROM |
| 985 | /* |
| 986 | * Write a word data to SROM |
| 987 | */ |
| 988 | static void |
| 989 | write_srom_word(board_info_t * db, int offset, u16 val) |
| 990 | { |
| 991 | iow(db, DM9000_EPAR, offset); |
| 992 | iow(db, DM9000_EPDRH, ((val >> 8) & 0xff)); |
| 993 | iow(db, DM9000_EPDRL, (val & 0xff)); |
| 994 | iow(db, DM9000_EPCR, EPCR_WEP | EPCR_ERPRW); |
| 995 | mdelay(8); /* same shit */ |
| 996 | iow(db, DM9000_EPCR, 0); |
| 997 | } |
| 998 | |
| 999 | /* |
| 1000 | * Only for development: |
| 1001 | * Here we write static data to the eeprom in case |
| 1002 | * we don't have valid content on a new board |
| 1003 | */ |
| 1004 | static void |
| 1005 | program_eeprom(board_info_t * db) |
| 1006 | { |
| 1007 | u16 eeprom[] = { 0x0c00, 0x007f, 0x1300, /* MAC Address */ |
| 1008 | 0x0000, /* Autoload: accept nothing */ |
| 1009 | 0x0a46, 0x9000, /* Vendor / Product ID */ |
| 1010 | 0x0000, /* pin control */ |
| 1011 | 0x0000, |
| 1012 | }; /* Wake-up mode control */ |
| 1013 | int i; |
| 1014 | for (i = 0; i < 8; i++) |
| 1015 | write_srom_word(db, i, eeprom[i]); |
| 1016 | } |
| 1017 | #endif |
| 1018 | |
| 1019 | |
| 1020 | /* |
| 1021 | * Calculate the CRC valude of the Rx packet |
| 1022 | * flag = 1 : return the reverse CRC (for the received packet CRC) |
| 1023 | * 0 : return the normal CRC (for Hash Table index) |
| 1024 | */ |
| 1025 | |
| 1026 | static unsigned long |
| 1027 | cal_CRC(unsigned char *Data, unsigned int Len, u8 flag) |
| 1028 | { |
| 1029 | |
| 1030 | u32 crc = ether_crc_le(Len, Data); |
| 1031 | |
| 1032 | if (flag) |
| 1033 | return ~crc; |
| 1034 | |
| 1035 | return crc; |
| 1036 | } |
| 1037 | |
| 1038 | /* |
| 1039 | * Set DM9000 multicast address |
| 1040 | */ |
| 1041 | static void |
| 1042 | dm9000_hash_table(struct net_device *dev) |
| 1043 | { |
| 1044 | board_info_t *db = (board_info_t *) dev->priv; |
| 1045 | struct dev_mc_list *mcptr = dev->mc_list; |
| 1046 | int mc_cnt = dev->mc_count; |
| 1047 | u32 hash_val; |
| 1048 | u16 i, oft, hash_table[4]; |
| 1049 | unsigned long flags; |
| 1050 | |
| 1051 | PRINTK2("dm9000_hash_table()\n"); |
| 1052 | |
| 1053 | spin_lock_irqsave(&db->lock,flags); |
| 1054 | |
| 1055 | for (i = 0, oft = 0x10; i < 6; i++, oft++) |
| 1056 | iow(db, oft, dev->dev_addr[i]); |
| 1057 | |
| 1058 | /* Clear Hash Table */ |
| 1059 | for (i = 0; i < 4; i++) |
| 1060 | hash_table[i] = 0x0; |
| 1061 | |
| 1062 | /* broadcast address */ |
| 1063 | hash_table[3] = 0x8000; |
| 1064 | |
| 1065 | /* the multicast address in Hash Table : 64 bits */ |
| 1066 | for (i = 0; i < mc_cnt; i++, mcptr = mcptr->next) { |
| 1067 | hash_val = cal_CRC((char *) mcptr->dmi_addr, 6, 0) & 0x3f; |
| 1068 | hash_table[hash_val / 16] |= (u16) 1 << (hash_val % 16); |
| 1069 | } |
| 1070 | |
| 1071 | /* Write the hash table to MAC MD table */ |
| 1072 | for (i = 0, oft = 0x16; i < 4; i++) { |
| 1073 | iow(db, oft++, hash_table[i] & 0xff); |
| 1074 | iow(db, oft++, (hash_table[i] >> 8) & 0xff); |
| 1075 | } |
| 1076 | |
| 1077 | spin_unlock_irqrestore(&db->lock,flags); |
| 1078 | } |
| 1079 | |
| 1080 | |
| 1081 | /* |
| 1082 | * Read a word from phyxcer |
| 1083 | */ |
| 1084 | static int |
| 1085 | dm9000_phy_read(struct net_device *dev, int phy_reg_unused, int reg) |
| 1086 | { |
| 1087 | board_info_t *db = (board_info_t *) dev->priv; |
| 1088 | unsigned long flags; |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 1089 | unsigned int reg_save; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1090 | int ret; |
| 1091 | |
| 1092 | spin_lock_irqsave(&db->lock,flags); |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 1093 | |
| 1094 | /* Save previous register address */ |
| 1095 | reg_save = readb(db->io_addr); |
| 1096 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1097 | /* Fill the phyxcer register into REG_0C */ |
| 1098 | iow(db, DM9000_EPAR, DM9000_PHY | reg); |
| 1099 | |
| 1100 | iow(db, DM9000_EPCR, 0xc); /* Issue phyxcer read command */ |
| 1101 | udelay(100); /* Wait read complete */ |
| 1102 | iow(db, DM9000_EPCR, 0x0); /* Clear phyxcer read command */ |
| 1103 | |
| 1104 | /* The read data keeps on REG_0D & REG_0E */ |
| 1105 | ret = (ior(db, DM9000_EPDRH) << 8) | ior(db, DM9000_EPDRL); |
| 1106 | |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 1107 | /* restore the previous address */ |
| 1108 | writeb(reg_save, db->io_addr); |
| 1109 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1110 | spin_unlock_irqrestore(&db->lock,flags); |
| 1111 | |
| 1112 | return ret; |
| 1113 | } |
| 1114 | |
| 1115 | /* |
| 1116 | * Write a word to phyxcer |
| 1117 | */ |
| 1118 | static void |
| 1119 | dm9000_phy_write(struct net_device *dev, int phyaddr_unused, int reg, int value) |
| 1120 | { |
| 1121 | board_info_t *db = (board_info_t *) dev->priv; |
| 1122 | unsigned long flags; |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 1123 | unsigned long reg_save; |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1124 | |
| 1125 | spin_lock_irqsave(&db->lock,flags); |
| 1126 | |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 1127 | /* Save previous register address */ |
| 1128 | reg_save = readb(db->io_addr); |
| 1129 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1130 | /* Fill the phyxcer register into REG_0C */ |
| 1131 | iow(db, DM9000_EPAR, DM9000_PHY | reg); |
| 1132 | |
| 1133 | /* Fill the written data into REG_0D & REG_0E */ |
| 1134 | iow(db, DM9000_EPDRL, (value & 0xff)); |
| 1135 | iow(db, DM9000_EPDRH, ((value >> 8) & 0xff)); |
| 1136 | |
| 1137 | iow(db, DM9000_EPCR, 0xa); /* Issue phyxcer write command */ |
| 1138 | udelay(500); /* Wait write complete */ |
| 1139 | iow(db, DM9000_EPCR, 0x0); /* Clear phyxcer write command */ |
| 1140 | |
Ben Dooks | 9ef9ac5 | 2005-07-23 17:25:18 +0100 | [diff] [blame] | 1141 | /* restore the previous address */ |
| 1142 | writeb(reg_save, db->io_addr); |
| 1143 | |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1144 | spin_unlock_irqrestore(&db->lock,flags); |
| 1145 | } |
| 1146 | |
| 1147 | static int |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1148 | dm9000_drv_suspend(struct platform_device *dev, pm_message_t state) |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1149 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1150 | struct net_device *ndev = platform_get_drvdata(dev); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1151 | |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 1152 | if (ndev) { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1153 | if (netif_running(ndev)) { |
| 1154 | netif_device_detach(ndev); |
| 1155 | dm9000_shutdown(ndev); |
| 1156 | } |
| 1157 | } |
| 1158 | return 0; |
| 1159 | } |
| 1160 | |
| 1161 | static int |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1162 | dm9000_drv_resume(struct platform_device *dev) |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1163 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1164 | struct net_device *ndev = platform_get_drvdata(dev); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1165 | board_info_t *db = (board_info_t *) ndev->priv; |
| 1166 | |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 1167 | if (ndev) { |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1168 | |
| 1169 | if (netif_running(ndev)) { |
| 1170 | dm9000_reset(db); |
| 1171 | dm9000_init_dm9000(ndev); |
| 1172 | |
| 1173 | netif_device_attach(ndev); |
| 1174 | } |
| 1175 | } |
| 1176 | return 0; |
| 1177 | } |
| 1178 | |
| 1179 | static int |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1180 | dm9000_drv_remove(struct platform_device *pdev) |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1181 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1182 | struct net_device *ndev = platform_get_drvdata(pdev); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1183 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1184 | platform_set_drvdata(pdev, NULL); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1185 | |
| 1186 | unregister_netdev(ndev); |
| 1187 | dm9000_release_board(pdev, (board_info_t *) ndev->priv); |
Ben Dooks | 9fd9f9b | 2007-05-07 11:13:25 +0000 | [diff] [blame] | 1188 | free_netdev(ndev); /* free device structure */ |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1189 | |
| 1190 | PRINTK1("clean_module() exit\n"); |
| 1191 | |
| 1192 | return 0; |
| 1193 | } |
| 1194 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1195 | static struct platform_driver dm9000_driver = { |
Ben Dooks | 5d22a31 | 2006-06-14 00:09:17 +0100 | [diff] [blame] | 1196 | .driver = { |
| 1197 | .name = "dm9000", |
| 1198 | .owner = THIS_MODULE, |
| 1199 | }, |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1200 | .probe = dm9000_probe, |
| 1201 | .remove = dm9000_drv_remove, |
| 1202 | .suspend = dm9000_drv_suspend, |
| 1203 | .resume = dm9000_drv_resume, |
| 1204 | }; |
| 1205 | |
| 1206 | static int __init |
| 1207 | dm9000_init(void) |
| 1208 | { |
Ben Dooks | 2ae2d77 | 2005-07-23 17:29:38 +0100 | [diff] [blame] | 1209 | printk(KERN_INFO "%s Ethernet Driver\n", CARDNAME); |
| 1210 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1211 | return platform_driver_register(&dm9000_driver); /* search board and register */ |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1212 | } |
| 1213 | |
| 1214 | static void __exit |
| 1215 | dm9000_cleanup(void) |
| 1216 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1217 | platform_driver_unregister(&dm9000_driver); |
Sascha Hauer | a136527 | 2005-05-05 15:14:15 -0700 | [diff] [blame] | 1218 | } |
| 1219 | |
| 1220 | module_init(dm9000_init); |
| 1221 | module_exit(dm9000_cleanup); |
| 1222 | |
| 1223 | MODULE_AUTHOR("Sascha Hauer, Ben Dooks"); |
| 1224 | MODULE_DESCRIPTION("Davicom DM9000 network driver"); |
| 1225 | MODULE_LICENSE("GPL"); |