David Sterba | 099dc4f | 2008-02-07 10:57:12 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * IPWireless 3G PCMCIA Network Driver |
| 3 | * |
| 4 | * Original code |
| 5 | * by Stephen Blackheath <stephen@blacksapphire.com>, |
| 6 | * Ben Martel <benm@symmetric.co.nz> |
| 7 | * |
| 8 | * Copyrighted as follows: |
| 9 | * Copyright (C) 2004 by Symmetric Systems Ltd (NZ) |
| 10 | * |
| 11 | * Various driver changes and rewrites, port to new kernels |
| 12 | * Copyright (C) 2006-2007 Jiri Kosina |
| 13 | * |
| 14 | * Misc code cleanups and updates |
| 15 | * Copyright (C) 2007 David Sterba |
| 16 | */ |
| 17 | |
| 18 | #include "hardware.h" |
| 19 | #include "network.h" |
| 20 | #include "main.h" |
| 21 | #include "tty.h" |
| 22 | |
| 23 | #include <linux/delay.h> |
| 24 | #include <linux/init.h> |
| 25 | #include <linux/io.h> |
| 26 | #include <linux/kernel.h> |
| 27 | #include <linux/module.h> |
| 28 | #include <linux/sched.h> |
| 29 | #include <linux/slab.h> |
| 30 | |
| 31 | #include <pcmcia/version.h> |
| 32 | #include <pcmcia/cisreg.h> |
| 33 | #include <pcmcia/device_id.h> |
| 34 | #include <pcmcia/ss.h> |
| 35 | #include <pcmcia/ds.h> |
| 36 | #include <pcmcia/cs.h> |
| 37 | |
| 38 | static struct pcmcia_device_id ipw_ids[] = { |
| 39 | PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0100), |
| 40 | PCMCIA_DEVICE_MANF_CARD(0x02f2, 0x0200), |
| 41 | PCMCIA_DEVICE_NULL |
| 42 | }; |
| 43 | MODULE_DEVICE_TABLE(pcmcia, ipw_ids); |
| 44 | |
| 45 | static void ipwireless_detach(struct pcmcia_device *link); |
| 46 | |
| 47 | /* |
| 48 | * Module params |
| 49 | */ |
| 50 | /* Debug mode: more verbose, print sent/recv bytes */ |
| 51 | int ipwireless_debug; |
| 52 | int ipwireless_loopback; |
| 53 | int ipwireless_out_queue = 1; |
| 54 | |
| 55 | module_param_named(debug, ipwireless_debug, int, 0); |
| 56 | module_param_named(loopback, ipwireless_loopback, int, 0); |
| 57 | module_param_named(out_queue, ipwireless_out_queue, int, 0); |
| 58 | MODULE_PARM_DESC(debug, "switch on debug messages [0]"); |
| 59 | MODULE_PARM_DESC(loopback, |
| 60 | "debug: enable ras_raw channel [0]"); |
| 61 | MODULE_PARM_DESC(out_queue, "debug: set size of outgoing queue [1]"); |
| 62 | |
| 63 | /* Executes in process context. */ |
| 64 | static void signalled_reboot_work(struct work_struct *work_reboot) |
| 65 | { |
| 66 | struct ipw_dev *ipw = container_of(work_reboot, struct ipw_dev, |
| 67 | work_reboot); |
| 68 | struct pcmcia_device *link = ipw->link; |
| 69 | int ret = pccard_reset_card(link->socket); |
| 70 | |
| 71 | if (ret != CS_SUCCESS) |
| 72 | cs_error(link, ResetCard, ret); |
| 73 | } |
| 74 | |
| 75 | static void signalled_reboot_callback(void *callback_data) |
| 76 | { |
| 77 | struct ipw_dev *ipw = (struct ipw_dev *) callback_data; |
| 78 | |
| 79 | /* Delegate to process context. */ |
| 80 | schedule_work(&ipw->work_reboot); |
| 81 | } |
| 82 | |
| 83 | static int config_ipwireless(struct ipw_dev *ipw) |
| 84 | { |
| 85 | struct pcmcia_device *link = ipw->link; |
| 86 | int ret; |
| 87 | config_info_t conf; |
| 88 | tuple_t tuple; |
| 89 | unsigned short buf[64]; |
| 90 | cisparse_t parse; |
| 91 | unsigned short cor_value; |
| 92 | win_req_t request_attr_memory; |
| 93 | win_req_t request_common_memory; |
| 94 | memreq_t memreq_attr_memory; |
| 95 | memreq_t memreq_common_memory; |
| 96 | |
| 97 | ipw->is_v2_card = 0; |
| 98 | |
| 99 | tuple.Attributes = 0; |
| 100 | tuple.TupleData = (cisdata_t *) buf; |
| 101 | tuple.TupleDataMax = sizeof(buf); |
| 102 | tuple.TupleOffset = 0; |
| 103 | |
| 104 | tuple.DesiredTuple = RETURN_FIRST_TUPLE; |
| 105 | |
| 106 | ret = pcmcia_get_first_tuple(link, &tuple); |
| 107 | |
| 108 | while (ret == 0) { |
| 109 | ret = pcmcia_get_tuple_data(link, &tuple); |
| 110 | |
| 111 | if (ret != CS_SUCCESS) { |
| 112 | cs_error(link, GetTupleData, ret); |
| 113 | goto exit0; |
| 114 | } |
| 115 | ret = pcmcia_get_next_tuple(link, &tuple); |
| 116 | } |
| 117 | |
| 118 | tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; |
| 119 | |
| 120 | ret = pcmcia_get_first_tuple(link, &tuple); |
| 121 | |
| 122 | if (ret != CS_SUCCESS) { |
| 123 | cs_error(link, GetFirstTuple, ret); |
| 124 | goto exit0; |
| 125 | } |
| 126 | |
| 127 | ret = pcmcia_get_tuple_data(link, &tuple); |
| 128 | |
| 129 | if (ret != CS_SUCCESS) { |
| 130 | cs_error(link, GetTupleData, ret); |
| 131 | goto exit0; |
| 132 | } |
| 133 | |
| 134 | ret = pcmcia_parse_tuple(link, &tuple, &parse); |
| 135 | |
| 136 | if (ret != CS_SUCCESS) { |
| 137 | cs_error(link, ParseTuple, ret); |
| 138 | goto exit0; |
| 139 | } |
| 140 | |
| 141 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; |
| 142 | link->io.BasePort1 = parse.cftable_entry.io.win[0].base; |
| 143 | link->io.NumPorts1 = parse.cftable_entry.io.win[0].len; |
| 144 | link->io.IOAddrLines = 16; |
| 145 | |
| 146 | link->irq.IRQInfo1 = parse.cftable_entry.irq.IRQInfo1; |
| 147 | |
| 148 | /* 0x40 causes it to generate level mode interrupts. */ |
| 149 | /* 0x04 enables IREQ pin. */ |
| 150 | cor_value = parse.cftable_entry.index | 0x44; |
| 151 | link->conf.ConfigIndex = cor_value; |
| 152 | |
| 153 | /* IRQ and I/O settings */ |
| 154 | tuple.DesiredTuple = CISTPL_CONFIG; |
| 155 | |
| 156 | ret = pcmcia_get_first_tuple(link, &tuple); |
| 157 | |
| 158 | if (ret != CS_SUCCESS) { |
| 159 | cs_error(link, GetFirstTuple, ret); |
| 160 | goto exit0; |
| 161 | } |
| 162 | |
| 163 | ret = pcmcia_get_tuple_data(link, &tuple); |
| 164 | |
| 165 | if (ret != CS_SUCCESS) { |
| 166 | cs_error(link, GetTupleData, ret); |
| 167 | goto exit0; |
| 168 | } |
| 169 | |
| 170 | ret = pcmcia_parse_tuple(link, &tuple, &parse); |
| 171 | |
| 172 | if (ret != CS_SUCCESS) { |
| 173 | cs_error(link, GetTupleData, ret); |
| 174 | goto exit0; |
| 175 | } |
| 176 | link->conf.Attributes = CONF_ENABLE_IRQ; |
| 177 | link->conf.ConfigBase = parse.config.base; |
| 178 | link->conf.Present = parse.config.rmask[0]; |
| 179 | link->conf.IntType = INT_MEMORY_AND_IO; |
| 180 | |
| 181 | link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING | IRQ_HANDLE_PRESENT; |
| 182 | link->irq.Handler = ipwireless_interrupt; |
| 183 | link->irq.Instance = ipw->hardware; |
| 184 | |
| 185 | ret = pcmcia_request_io(link, &link->io); |
| 186 | |
| 187 | if (ret != CS_SUCCESS) { |
| 188 | cs_error(link, RequestIO, ret); |
| 189 | goto exit0; |
| 190 | } |
| 191 | |
| 192 | /* memory settings */ |
| 193 | |
| 194 | tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; |
| 195 | |
| 196 | ret = pcmcia_get_first_tuple(link, &tuple); |
| 197 | |
| 198 | if (ret != CS_SUCCESS) { |
| 199 | cs_error(link, GetFirstTuple, ret); |
| 200 | goto exit1; |
| 201 | } |
| 202 | |
| 203 | ret = pcmcia_get_tuple_data(link, &tuple); |
| 204 | |
| 205 | if (ret != CS_SUCCESS) { |
| 206 | cs_error(link, GetTupleData, ret); |
| 207 | goto exit1; |
| 208 | } |
| 209 | |
| 210 | ret = pcmcia_parse_tuple(link, &tuple, &parse); |
| 211 | |
| 212 | if (ret != CS_SUCCESS) { |
| 213 | cs_error(link, ParseTuple, ret); |
| 214 | goto exit1; |
| 215 | } |
| 216 | |
| 217 | if (parse.cftable_entry.mem.nwin > 0) { |
| 218 | request_common_memory.Attributes = |
| 219 | WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_CM | WIN_ENABLE; |
| 220 | request_common_memory.Base = |
| 221 | parse.cftable_entry.mem.win[0].host_addr; |
| 222 | request_common_memory.Size = parse.cftable_entry.mem.win[0].len; |
| 223 | if (request_common_memory.Size < 0x1000) |
| 224 | request_common_memory.Size = 0x1000; |
| 225 | request_common_memory.AccessSpeed = 0; |
| 226 | |
| 227 | ret = pcmcia_request_window(&link, &request_common_memory, |
| 228 | &ipw->handle_common_memory); |
| 229 | |
| 230 | if (ret != CS_SUCCESS) { |
| 231 | cs_error(link, RequestWindow, ret); |
| 232 | goto exit1; |
| 233 | } |
| 234 | |
| 235 | memreq_common_memory.CardOffset = |
| 236 | parse.cftable_entry.mem.win[0].card_addr; |
| 237 | memreq_common_memory.Page = 0; |
| 238 | |
| 239 | ret = pcmcia_map_mem_page(ipw->handle_common_memory, |
| 240 | &memreq_common_memory); |
| 241 | |
| 242 | if (ret != CS_SUCCESS) { |
| 243 | cs_error(link, MapMemPage, ret); |
| 244 | goto exit1; |
| 245 | } |
| 246 | |
| 247 | ipw->is_v2_card = |
| 248 | parse.cftable_entry.mem.win[0].len == 0x100; |
| 249 | |
| 250 | ipw->common_memory = ioremap(request_common_memory.Base, |
| 251 | request_common_memory.Size); |
| 252 | |
| 253 | request_attr_memory.Attributes = |
| 254 | WIN_DATA_WIDTH_16 | WIN_MEMORY_TYPE_AM | WIN_ENABLE; |
| 255 | request_attr_memory.Base = 0; |
| 256 | request_attr_memory.Size = 0; /* this used to be 0x1000 */ |
| 257 | request_attr_memory.AccessSpeed = 0; |
| 258 | |
| 259 | ret = pcmcia_request_window(&link, &request_attr_memory, |
| 260 | &ipw->handle_attr_memory); |
| 261 | |
| 262 | if (ret != CS_SUCCESS) { |
| 263 | cs_error(link, RequestWindow, ret); |
| 264 | goto exit2; |
| 265 | } |
| 266 | |
| 267 | memreq_attr_memory.CardOffset = 0; |
| 268 | memreq_attr_memory.Page = 0; |
| 269 | |
| 270 | ret = pcmcia_map_mem_page(ipw->handle_attr_memory, |
| 271 | &memreq_attr_memory); |
| 272 | |
| 273 | if (ret != CS_SUCCESS) { |
| 274 | cs_error(link, MapMemPage, ret); |
| 275 | goto exit2; |
| 276 | } |
| 277 | |
| 278 | ipw->attr_memory = ioremap(request_attr_memory.Base, |
| 279 | request_attr_memory.Size); |
| 280 | } |
| 281 | |
| 282 | INIT_WORK(&ipw->work_reboot, signalled_reboot_work); |
| 283 | |
| 284 | ipwireless_init_hardware_v1(ipw->hardware, link->io.BasePort1, |
| 285 | ipw->attr_memory, ipw->common_memory, |
| 286 | ipw->is_v2_card, signalled_reboot_callback, |
| 287 | ipw); |
| 288 | |
| 289 | ret = pcmcia_request_irq(link, &link->irq); |
| 290 | |
| 291 | if (ret != CS_SUCCESS) { |
| 292 | cs_error(link, RequestIRQ, ret); |
| 293 | goto exit3; |
| 294 | } |
| 295 | |
| 296 | /* Look up current Vcc */ |
| 297 | |
| 298 | ret = pcmcia_get_configuration_info(link, &conf); |
| 299 | |
| 300 | if (ret != CS_SUCCESS) { |
| 301 | cs_error(link, GetConfigurationInfo, ret); |
| 302 | goto exit4; |
| 303 | } |
| 304 | |
| 305 | printk(KERN_INFO IPWIRELESS_PCCARD_NAME ": Card type %s\n", |
| 306 | ipw->is_v2_card ? "V2/V3" : "V1"); |
| 307 | printk(KERN_INFO IPWIRELESS_PCCARD_NAME |
| 308 | ": I/O ports 0x%04x-0x%04x, irq %d\n", |
| 309 | (unsigned int) link->io.BasePort1, |
| 310 | (unsigned int) (link->io.BasePort1 + |
| 311 | link->io.NumPorts1 - 1), |
| 312 | (unsigned int) link->irq.AssignedIRQ); |
| 313 | if (ipw->attr_memory && ipw->common_memory) |
| 314 | printk(KERN_INFO IPWIRELESS_PCCARD_NAME |
| 315 | ": attr memory 0x%08lx-0x%08lx, " |
| 316 | "common memory 0x%08lx-0x%08lx\n", |
| 317 | request_attr_memory.Base, |
| 318 | request_attr_memory.Base |
| 319 | + request_attr_memory.Size - 1, |
| 320 | request_common_memory.Base, |
| 321 | request_common_memory.Base |
| 322 | + request_common_memory.Size - 1); |
| 323 | |
| 324 | ipw->network = ipwireless_network_create(ipw->hardware); |
| 325 | if (!ipw->network) |
| 326 | goto exit3; |
| 327 | |
| 328 | ipw->tty = ipwireless_tty_create(ipw->hardware, ipw->network, |
| 329 | ipw->nodes); |
| 330 | if (!ipw->tty) |
| 331 | goto exit3; |
| 332 | |
| 333 | ipwireless_init_hardware_v2_v3(ipw->hardware); |
| 334 | |
| 335 | /* |
| 336 | * Do the RequestConfiguration last, because it enables interrupts. |
| 337 | * Then we don't get any interrupts before we're ready for them. |
| 338 | */ |
| 339 | ret = pcmcia_request_configuration(link, &link->conf); |
| 340 | |
| 341 | if (ret != CS_SUCCESS) { |
| 342 | cs_error(link, RequestConfiguration, ret); |
| 343 | goto exit4; |
| 344 | } |
| 345 | |
| 346 | link->dev_node = &ipw->nodes[0]; |
| 347 | |
| 348 | return 0; |
| 349 | |
| 350 | exit4: |
| 351 | pcmcia_disable_device(link); |
| 352 | exit3: |
| 353 | if (ipw->attr_memory) { |
| 354 | iounmap(ipw->attr_memory); |
| 355 | pcmcia_release_window(ipw->handle_attr_memory); |
| 356 | pcmcia_disable_device(link); |
| 357 | } |
| 358 | exit2: |
| 359 | if (ipw->common_memory) { |
| 360 | iounmap(ipw->common_memory); |
| 361 | pcmcia_release_window(ipw->handle_common_memory); |
| 362 | } |
| 363 | exit1: |
| 364 | pcmcia_disable_device(link); |
| 365 | exit0: |
| 366 | return -1; |
| 367 | } |
| 368 | |
| 369 | static void release_ipwireless(struct ipw_dev *ipw) |
| 370 | { |
| 371 | struct pcmcia_device *link = ipw->link; |
| 372 | |
| 373 | pcmcia_disable_device(link); |
| 374 | |
| 375 | if (ipw->common_memory) |
| 376 | iounmap(ipw->common_memory); |
| 377 | if (ipw->attr_memory) |
| 378 | iounmap(ipw->attr_memory); |
| 379 | if (ipw->common_memory) |
| 380 | pcmcia_release_window(ipw->handle_common_memory); |
| 381 | if (ipw->attr_memory) |
| 382 | pcmcia_release_window(ipw->handle_attr_memory); |
| 383 | pcmcia_disable_device(link); |
| 384 | } |
| 385 | |
| 386 | /* |
| 387 | * ipwireless_attach() creates an "instance" of the driver, allocating |
| 388 | * local data structures for one device (one interface). The device |
| 389 | * is registered with Card Services. |
| 390 | * |
| 391 | * The pcmcia_device structure is initialized, but we don't actually |
| 392 | * configure the card at this point -- we wait until we receive a |
| 393 | * card insertion event. |
| 394 | */ |
| 395 | static int ipwireless_attach(struct pcmcia_device *link) |
| 396 | { |
| 397 | struct ipw_dev *ipw; |
| 398 | int ret; |
| 399 | |
| 400 | ipw = kzalloc(sizeof(struct ipw_dev), GFP_KERNEL); |
| 401 | if (!ipw) |
| 402 | return -ENOMEM; |
| 403 | |
| 404 | ipw->link = link; |
| 405 | link->priv = ipw; |
| 406 | link->irq.Instance = ipw; |
| 407 | |
| 408 | /* Link this device into our device list. */ |
| 409 | link->dev_node = &ipw->nodes[0]; |
| 410 | |
| 411 | ipw->hardware = ipwireless_hardware_create(); |
| 412 | if (!ipw->hardware) { |
| 413 | kfree(ipw); |
| 414 | return -ENOMEM; |
| 415 | } |
| 416 | /* RegisterClient will call config_ipwireless */ |
| 417 | |
| 418 | ret = config_ipwireless(ipw); |
| 419 | |
| 420 | if (ret != 0) { |
| 421 | cs_error(link, RegisterClient, ret); |
| 422 | ipwireless_detach(link); |
| 423 | return ret; |
| 424 | } |
| 425 | |
| 426 | return 0; |
| 427 | } |
| 428 | |
| 429 | /* |
| 430 | * This deletes a driver "instance". The device is de-registered with |
| 431 | * Card Services. If it has been released, all local data structures |
| 432 | * are freed. Otherwise, the structures will be freed when the device |
| 433 | * is released. |
| 434 | */ |
| 435 | static void ipwireless_detach(struct pcmcia_device *link) |
| 436 | { |
| 437 | struct ipw_dev *ipw = link->priv; |
| 438 | |
| 439 | release_ipwireless(ipw); |
| 440 | |
| 441 | /* Break the link with Card Services */ |
| 442 | if (link) |
| 443 | pcmcia_disable_device(link); |
| 444 | |
| 445 | if (ipw->tty != NULL) |
| 446 | ipwireless_tty_free(ipw->tty); |
| 447 | if (ipw->network != NULL) |
| 448 | ipwireless_network_free(ipw->network); |
| 449 | if (ipw->hardware != NULL) |
| 450 | ipwireless_hardware_free(ipw->hardware); |
| 451 | kfree(ipw); |
| 452 | } |
| 453 | |
| 454 | static struct pcmcia_driver me = { |
| 455 | .owner = THIS_MODULE, |
| 456 | .probe = ipwireless_attach, |
| 457 | .remove = ipwireless_detach, |
| 458 | .drv = { .name = IPWIRELESS_PCCARD_NAME }, |
| 459 | .id_table = ipw_ids |
| 460 | }; |
| 461 | |
| 462 | /* |
| 463 | * Module insertion : initialisation of the module. |
| 464 | * Register the card with cardmgr... |
| 465 | */ |
| 466 | static int __init init_ipwireless(void) |
| 467 | { |
| 468 | int ret; |
| 469 | |
| 470 | printk(KERN_INFO IPWIRELESS_PCCARD_NAME " " |
| 471 | IPWIRELESS_PCMCIA_VERSION " by " IPWIRELESS_PCMCIA_AUTHOR "\n"); |
| 472 | |
| 473 | ret = ipwireless_tty_init(); |
| 474 | if (ret != 0) |
| 475 | return ret; |
| 476 | |
| 477 | ret = pcmcia_register_driver(&me); |
| 478 | if (ret != 0) |
| 479 | ipwireless_tty_release(); |
| 480 | |
| 481 | return ret; |
| 482 | } |
| 483 | |
| 484 | /* |
| 485 | * Module removal |
| 486 | */ |
| 487 | static void __exit exit_ipwireless(void) |
| 488 | { |
| 489 | printk(KERN_INFO IPWIRELESS_PCCARD_NAME " " |
| 490 | IPWIRELESS_PCMCIA_VERSION " removed\n"); |
| 491 | |
| 492 | pcmcia_unregister_driver(&me); |
| 493 | ipwireless_tty_release(); |
| 494 | } |
| 495 | |
| 496 | module_init(init_ipwireless); |
| 497 | module_exit(exit_ipwireless); |
| 498 | |
| 499 | MODULE_AUTHOR(IPWIRELESS_PCMCIA_AUTHOR); |
| 500 | MODULE_DESCRIPTION(IPWIRELESS_PCCARD_NAME " " IPWIRELESS_PCMCIA_VERSION); |
| 501 | MODULE_LICENSE("GPL"); |