Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * PCMCIA client driver for AVM A1 / Fritz!PCMCIA |
| 3 | * |
| 4 | * Author Carsten Paeth |
| 5 | * Copyright 1998-2001 by Carsten Paeth <calle@calle.in-berlin.de> |
| 6 | * |
| 7 | * This software may be used and distributed according to the terms |
| 8 | * of the GNU General Public License, incorporated herein by reference. |
| 9 | * |
| 10 | */ |
| 11 | |
| 12 | #include <linux/module.h> |
| 13 | |
| 14 | |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/init.h> |
| 17 | #include <linux/sched.h> |
| 18 | #include <linux/ptrace.h> |
| 19 | #include <linux/slab.h> |
| 20 | #include <linux/string.h> |
| 21 | #include <asm/io.h> |
| 22 | #include <asm/system.h> |
| 23 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <pcmcia/cs_types.h> |
| 25 | #include <pcmcia/cs.h> |
| 26 | #include <pcmcia/cistpl.h> |
| 27 | #include <pcmcia/ds.h> |
| 28 | #include "hisax_cfg.h" |
| 29 | |
| 30 | MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for AVM A1/Fritz!PCMCIA cards"); |
| 31 | MODULE_AUTHOR("Carsten Paeth"); |
| 32 | MODULE_LICENSE("GPL"); |
| 33 | |
| 34 | /* |
| 35 | All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If |
| 36 | you do not define PCMCIA_DEBUG at all, all the debug code will be |
| 37 | left out. If you compile with PCMCIA_DEBUG=0, the debug code will |
| 38 | be present but disabled -- but it can then be enabled for specific |
| 39 | modules at load time with a 'pc_debug=#' option to insmod. |
| 40 | */ |
| 41 | #ifdef PCMCIA_DEBUG |
| 42 | static int pc_debug = PCMCIA_DEBUG; |
| 43 | module_param(pc_debug, int, 0); |
| 44 | #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args); |
| 45 | static char *version = |
| 46 | "avma1_cs.c 1.00 1998/01/23 10:00:00 (Carsten Paeth)"; |
| 47 | #else |
| 48 | #define DEBUG(n, args...) |
| 49 | #endif |
| 50 | |
| 51 | /*====================================================================*/ |
| 52 | |
| 53 | /* Parameters that can be set with 'insmod' */ |
| 54 | |
| 55 | static int isdnprot = 2; |
| 56 | |
| 57 | module_param(isdnprot, int, 0); |
| 58 | |
| 59 | /*====================================================================*/ |
| 60 | |
| 61 | /* |
| 62 | The event() function is this driver's Card Services event handler. |
| 63 | It will be called by Card Services when an appropriate card status |
| 64 | event is received. The config() and release() entry points are |
| 65 | used to configure or release a socket, in response to card insertion |
| 66 | and ejection events. They are invoked from the skeleton event |
| 67 | handler. |
| 68 | */ |
| 69 | |
| 70 | static void avma1cs_config(dev_link_t *link); |
| 71 | static void avma1cs_release(dev_link_t *link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | |
| 73 | /* |
| 74 | The attach() and detach() entry points are used to create and destroy |
| 75 | "instances" of the driver, where each instance represents everything |
| 76 | needed to manage one actual PCMCIA card. |
| 77 | */ |
| 78 | |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 79 | static void avma1cs_detach(struct pcmcia_device *p_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | |
| 82 | /* |
| 83 | A linked list of "instances" of the skeleton device. Each actual |
| 84 | PCMCIA card corresponds to one device instance, and is described |
| 85 | by one dev_link_t structure (defined in ds.h). |
| 86 | |
| 87 | You may not want to use a linked list for this -- for example, the |
| 88 | memory card driver uses an array of dev_link_t pointers, where minor |
| 89 | device numbers are used to derive the corresponding array index. |
| 90 | */ |
| 91 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | A driver needs to provide a dev_node_t structure for each device |
| 94 | on a card. In some cases, there is only one device per card (for |
| 95 | example, ethernet cards, modems). In other cases, there may be |
| 96 | many actual or logical devices (SCSI adapters, memory cards with |
| 97 | multiple partitions). The dev_node_t structures need to be kept |
| 98 | in a linked list starting at the 'dev' field of a dev_link_t |
| 99 | structure. We allocate them in the card's private data structure, |
| 100 | because they generally can't be allocated dynamically. |
| 101 | */ |
| 102 | |
| 103 | typedef struct local_info_t { |
| 104 | dev_node_t node; |
| 105 | } local_info_t; |
| 106 | |
| 107 | /*====================================================================== |
| 108 | |
| 109 | avma1cs_attach() creates an "instance" of the driver, allocating |
| 110 | local data structures for one device. The device is registered |
| 111 | with Card Services. |
| 112 | |
| 113 | The dev_link structure is initialized, but we don't actually |
| 114 | configure the card at this point -- we wait until we receive a |
| 115 | card insertion event. |
| 116 | |
| 117 | ======================================================================*/ |
| 118 | |
Dominik Brodowski | f8cfa61 | 2005-11-14 21:25:51 +0100 | [diff] [blame^] | 119 | static int avma1cs_attach(struct pcmcia_device *p_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | dev_link_t *link; |
| 122 | local_info_t *local; |
Dominik Brodowski | f8cfa61 | 2005-11-14 21:25:51 +0100 | [diff] [blame^] | 123 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | DEBUG(0, "avma1cs_attach()\n"); |
| 125 | |
| 126 | /* Initialize the dev_link_t structure */ |
| 127 | link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL); |
| 128 | if (!link) |
Dominik Brodowski | f8cfa61 | 2005-11-14 21:25:51 +0100 | [diff] [blame^] | 129 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | memset(link, 0, sizeof(struct dev_link_t)); |
| 131 | |
| 132 | /* Allocate space for private device-specific data */ |
| 133 | local = kmalloc(sizeof(local_info_t), GFP_KERNEL); |
| 134 | if (!local) { |
| 135 | kfree(link); |
Dominik Brodowski | f8cfa61 | 2005-11-14 21:25:51 +0100 | [diff] [blame^] | 136 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | } |
| 138 | memset(local, 0, sizeof(local_info_t)); |
| 139 | link->priv = local; |
| 140 | |
| 141 | /* The io structure describes IO port mapping */ |
| 142 | link->io.NumPorts1 = 16; |
| 143 | link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; |
| 144 | link->io.NumPorts2 = 16; |
| 145 | link->io.Attributes2 = IO_DATA_PATH_WIDTH_16; |
| 146 | link->io.IOAddrLines = 5; |
| 147 | |
| 148 | /* Interrupt setup */ |
| 149 | link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; |
| 150 | link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED; |
| 151 | |
| 152 | link->irq.IRQInfo1 = IRQ_LEVEL_ID; |
| 153 | |
| 154 | /* General socket configuration */ |
| 155 | link->conf.Attributes = CONF_ENABLE_IRQ; |
| 156 | link->conf.Vcc = 50; |
| 157 | link->conf.IntType = INT_MEMORY_AND_IO; |
| 158 | link->conf.ConfigIndex = 1; |
| 159 | link->conf.Present = PRESENT_OPTION; |
| 160 | |
Dominik Brodowski | f8cfa61 | 2005-11-14 21:25:51 +0100 | [diff] [blame^] | 161 | link->handle = p_dev; |
| 162 | p_dev->instance = link; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | |
Dominik Brodowski | f8cfa61 | 2005-11-14 21:25:51 +0100 | [diff] [blame^] | 164 | link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; |
| 165 | avma1cs_config(link); |
| 166 | |
| 167 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | } /* avma1cs_attach */ |
| 169 | |
| 170 | /*====================================================================== |
| 171 | |
| 172 | This deletes a driver "instance". The device is de-registered |
| 173 | with Card Services. If it has been released, all local data |
| 174 | structures are freed. Otherwise, the structures will be freed |
| 175 | when the device is released. |
| 176 | |
| 177 | ======================================================================*/ |
| 178 | |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 179 | static void avma1cs_detach(struct pcmcia_device *p_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | { |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 181 | dev_link_t *link = dev_to_instance(p_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | |
| 183 | DEBUG(0, "avma1cs_detach(0x%p)\n", link); |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 184 | |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 185 | if (link->state & DEV_CONFIG) |
| 186 | avma1cs_release(link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | |
Jesper Juhl | 3c7208f | 2005-11-07 01:01:29 -0800 | [diff] [blame] | 188 | kfree(link->priv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | kfree(link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | } /* avma1cs_detach */ |
| 191 | |
| 192 | /*====================================================================== |
| 193 | |
| 194 | avma1cs_config() is scheduled to run after a CARD_INSERTION event |
| 195 | is received, to configure the PCMCIA socket, and to make the |
| 196 | ethernet device available to the system. |
| 197 | |
| 198 | ======================================================================*/ |
| 199 | |
| 200 | static int get_tuple(client_handle_t handle, tuple_t *tuple, |
| 201 | cisparse_t *parse) |
| 202 | { |
| 203 | int i = pcmcia_get_tuple_data(handle, tuple); |
| 204 | if (i != CS_SUCCESS) return i; |
| 205 | return pcmcia_parse_tuple(handle, tuple, parse); |
| 206 | } |
| 207 | |
| 208 | static int first_tuple(client_handle_t handle, tuple_t *tuple, |
| 209 | cisparse_t *parse) |
| 210 | { |
| 211 | int i = pcmcia_get_first_tuple(handle, tuple); |
| 212 | if (i != CS_SUCCESS) return i; |
| 213 | return get_tuple(handle, tuple, parse); |
| 214 | } |
| 215 | |
| 216 | static int next_tuple(client_handle_t handle, tuple_t *tuple, |
| 217 | cisparse_t *parse) |
| 218 | { |
| 219 | int i = pcmcia_get_next_tuple(handle, tuple); |
| 220 | if (i != CS_SUCCESS) return i; |
| 221 | return get_tuple(handle, tuple, parse); |
| 222 | } |
| 223 | |
| 224 | static void avma1cs_config(dev_link_t *link) |
| 225 | { |
| 226 | client_handle_t handle; |
| 227 | tuple_t tuple; |
| 228 | cisparse_t parse; |
| 229 | cistpl_cftable_entry_t *cf = &parse.cftable_entry; |
| 230 | local_info_t *dev; |
| 231 | int i; |
| 232 | u_char buf[64]; |
| 233 | char devname[128]; |
| 234 | IsdnCard_t icard; |
| 235 | int busy = 0; |
| 236 | |
| 237 | handle = link->handle; |
| 238 | dev = link->priv; |
| 239 | |
| 240 | DEBUG(0, "avma1cs_config(0x%p)\n", link); |
| 241 | |
| 242 | /* |
| 243 | This reads the card's CONFIG tuple to find its configuration |
| 244 | registers. |
| 245 | */ |
| 246 | do { |
| 247 | tuple.DesiredTuple = CISTPL_CONFIG; |
| 248 | i = pcmcia_get_first_tuple(handle, &tuple); |
| 249 | if (i != CS_SUCCESS) break; |
| 250 | tuple.TupleData = buf; |
| 251 | tuple.TupleDataMax = 64; |
| 252 | tuple.TupleOffset = 0; |
| 253 | i = pcmcia_get_tuple_data(handle, &tuple); |
| 254 | if (i != CS_SUCCESS) break; |
| 255 | i = pcmcia_parse_tuple(handle, &tuple, &parse); |
| 256 | if (i != CS_SUCCESS) break; |
| 257 | link->conf.ConfigBase = parse.config.base; |
| 258 | } while (0); |
| 259 | if (i != CS_SUCCESS) { |
| 260 | cs_error(link->handle, ParseTuple, i); |
| 261 | link->state &= ~DEV_CONFIG_PENDING; |
| 262 | return; |
| 263 | } |
| 264 | |
| 265 | /* Configure card */ |
| 266 | link->state |= DEV_CONFIG; |
| 267 | |
| 268 | do { |
| 269 | |
| 270 | tuple.Attributes = 0; |
| 271 | tuple.TupleData = buf; |
| 272 | tuple.TupleDataMax = 254; |
| 273 | tuple.TupleOffset = 0; |
| 274 | tuple.DesiredTuple = CISTPL_VERS_1; |
| 275 | |
| 276 | devname[0] = 0; |
| 277 | if( !first_tuple(handle, &tuple, &parse) && parse.version_1.ns > 1 ) { |
| 278 | strlcpy(devname,parse.version_1.str + parse.version_1.ofs[1], |
| 279 | sizeof(devname)); |
| 280 | } |
| 281 | /* |
| 282 | * find IO port |
| 283 | */ |
| 284 | tuple.TupleData = (cisdata_t *)buf; |
| 285 | tuple.TupleOffset = 0; tuple.TupleDataMax = 255; |
| 286 | tuple.Attributes = 0; |
| 287 | tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; |
| 288 | i = first_tuple(handle, &tuple, &parse); |
| 289 | while (i == CS_SUCCESS) { |
| 290 | if (cf->io.nwin > 0) { |
| 291 | link->conf.ConfigIndex = cf->index; |
| 292 | link->io.BasePort1 = cf->io.win[0].base; |
| 293 | link->io.NumPorts1 = cf->io.win[0].len; |
| 294 | link->io.NumPorts2 = 0; |
| 295 | printk(KERN_INFO "avma1_cs: testing i/o %#x-%#x\n", |
| 296 | link->io.BasePort1, |
| 297 | link->io.BasePort1+link->io.NumPorts1 - 1); |
| 298 | i = pcmcia_request_io(link->handle, &link->io); |
| 299 | if (i == CS_SUCCESS) goto found_port; |
| 300 | } |
| 301 | i = next_tuple(handle, &tuple, &parse); |
| 302 | } |
| 303 | |
| 304 | found_port: |
| 305 | if (i != CS_SUCCESS) { |
| 306 | cs_error(link->handle, RequestIO, i); |
| 307 | break; |
| 308 | } |
| 309 | |
| 310 | /* |
| 311 | * allocate an interrupt line |
| 312 | */ |
| 313 | i = pcmcia_request_irq(link->handle, &link->irq); |
| 314 | if (i != CS_SUCCESS) { |
| 315 | cs_error(link->handle, RequestIRQ, i); |
| 316 | pcmcia_release_io(link->handle, &link->io); |
| 317 | break; |
| 318 | } |
| 319 | |
| 320 | /* |
| 321 | * configure the PCMCIA socket |
| 322 | */ |
| 323 | i = pcmcia_request_configuration(link->handle, &link->conf); |
| 324 | if (i != CS_SUCCESS) { |
| 325 | cs_error(link->handle, RequestConfiguration, i); |
| 326 | pcmcia_release_io(link->handle, &link->io); |
| 327 | pcmcia_release_irq(link->handle, &link->irq); |
| 328 | break; |
| 329 | } |
| 330 | |
| 331 | } while (0); |
| 332 | |
| 333 | /* At this point, the dev_node_t structure(s) should be |
| 334 | initialized and arranged in a linked list at link->dev. */ |
| 335 | |
| 336 | strcpy(dev->node.dev_name, "A1"); |
| 337 | dev->node.major = 45; |
| 338 | dev->node.minor = 0; |
| 339 | link->dev = &dev->node; |
| 340 | |
| 341 | link->state &= ~DEV_CONFIG_PENDING; |
| 342 | /* If any step failed, release any partially configured state */ |
| 343 | if (i != 0) { |
| 344 | avma1cs_release(link); |
| 345 | return; |
| 346 | } |
| 347 | |
| 348 | printk(KERN_NOTICE "avma1_cs: checking at i/o %#x, irq %d\n", |
| 349 | link->io.BasePort1, link->irq.AssignedIRQ); |
| 350 | |
| 351 | icard.para[0] = link->irq.AssignedIRQ; |
| 352 | icard.para[1] = link->io.BasePort1; |
| 353 | icard.protocol = isdnprot; |
| 354 | icard.typ = ISDN_CTYPE_A1_PCMCIA; |
| 355 | |
| 356 | i = hisax_init_pcmcia(link, &busy, &icard); |
| 357 | if (i < 0) { |
| 358 | printk(KERN_ERR "avma1_cs: failed to initialize AVM A1 PCMCIA %d at i/o %#x\n", i, link->io.BasePort1); |
| 359 | avma1cs_release(link); |
| 360 | return; |
| 361 | } |
| 362 | dev->node.minor = i; |
| 363 | |
| 364 | } /* avma1cs_config */ |
| 365 | |
| 366 | /*====================================================================== |
| 367 | |
| 368 | After a card is removed, avma1cs_release() will unregister the net |
| 369 | device, and release the PCMCIA configuration. If the device is |
| 370 | still open, this will be postponed until it is closed. |
| 371 | |
| 372 | ======================================================================*/ |
| 373 | |
| 374 | static void avma1cs_release(dev_link_t *link) |
| 375 | { |
| 376 | local_info_t *local = link->priv; |
| 377 | |
| 378 | DEBUG(0, "avma1cs_release(0x%p)\n", link); |
| 379 | |
| 380 | /* no unregister function with hisax */ |
| 381 | HiSax_closecard(local->node.minor); |
| 382 | |
| 383 | /* Unlink the device chain */ |
| 384 | link->dev = NULL; |
| 385 | |
| 386 | /* Don't bother checking to see if these succeed or not */ |
| 387 | pcmcia_release_configuration(link->handle); |
| 388 | pcmcia_release_io(link->handle, &link->io); |
| 389 | pcmcia_release_irq(link->handle, &link->irq); |
| 390 | link->state &= ~DEV_CONFIG; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | } /* avma1cs_release */ |
| 392 | |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 393 | static int avma1cs_suspend(struct pcmcia_device *dev) |
| 394 | { |
| 395 | dev_link_t *link = dev_to_instance(dev); |
| 396 | |
| 397 | link->state |= DEV_SUSPEND; |
| 398 | if (link->state & DEV_CONFIG) |
| 399 | pcmcia_release_configuration(link->handle); |
| 400 | |
| 401 | return 0; |
| 402 | } |
| 403 | |
| 404 | static int avma1cs_resume(struct pcmcia_device *dev) |
| 405 | { |
| 406 | dev_link_t *link = dev_to_instance(dev); |
| 407 | |
| 408 | link->state &= ~DEV_SUSPEND; |
| 409 | if (link->state & DEV_CONFIG) |
| 410 | pcmcia_request_configuration(link->handle, &link->conf); |
| 411 | |
| 412 | return 0; |
| 413 | } |
| 414 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | |
Dominik Brodowski | c594c12 | 2005-06-27 16:28:34 -0700 | [diff] [blame] | 416 | static struct pcmcia_device_id avma1cs_ids[] = { |
| 417 | PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN A", 0x95d42008, 0xadc9d4bb), |
| 418 | PCMCIA_DEVICE_PROD_ID12("ISDN", "CARD", 0x8d9761c8, 0x01c5aa7b), |
| 419 | PCMCIA_DEVICE_NULL |
| 420 | }; |
| 421 | MODULE_DEVICE_TABLE(pcmcia, avma1cs_ids); |
| 422 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | static struct pcmcia_driver avma1cs_driver = { |
| 424 | .owner = THIS_MODULE, |
| 425 | .drv = { |
| 426 | .name = "avma1_cs", |
| 427 | }, |
Dominik Brodowski | f8cfa61 | 2005-11-14 21:25:51 +0100 | [diff] [blame^] | 428 | .probe = avma1cs_attach, |
Dominik Brodowski | cc3b486 | 2005-11-14 21:23:14 +0100 | [diff] [blame] | 429 | .remove = avma1cs_detach, |
Dominik Brodowski | c594c12 | 2005-06-27 16:28:34 -0700 | [diff] [blame] | 430 | .id_table = avma1cs_ids, |
Dominik Brodowski | 98e4c28 | 2005-11-14 21:21:18 +0100 | [diff] [blame] | 431 | .suspend = avma1cs_suspend, |
| 432 | .resume = avma1cs_resume, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | }; |
| 434 | |
| 435 | /*====================================================================*/ |
| 436 | |
| 437 | static int __init init_avma1_cs(void) |
| 438 | { |
| 439 | return(pcmcia_register_driver(&avma1cs_driver)); |
| 440 | } |
| 441 | |
| 442 | static void __exit exit_avma1_cs(void) |
| 443 | { |
| 444 | pcmcia_unregister_driver(&avma1cs_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | } |
| 446 | |
| 447 | module_init(init_avma1_cs); |
| 448 | module_exit(exit_avma1_cs); |