1 /* 2 * PCMCIA driver for SL811HS (as found in REX-CFU1U) 3 * Filename: sl811_cs.c 4 * Author: Yukio Yamamoto 5 * 6 * Port to sl811-hcd and 2.6.x by 7 * Botond Botyanszki <boti@rocketmail.com> 8 * Simon Pickering 9 * 10 * Last update: 2005-05-12 11 */ 12 13 #include <linux/kernel.h> 14 #include <linux/module.h> 15 #include <linux/init.h> 16 #include <linux/sched.h> 17 #include <linux/ptrace.h> 18 #include <linux/slab.h> 19 #include <linux/string.h> 20 #include <linux/timer.h> 21 #include <linux/ioport.h> 22 #include <linux/platform_device.h> 23 24 #include <pcmcia/cs_types.h> 25 #include <pcmcia/cs.h> 26 #include <pcmcia/cistpl.h> 27 #include <pcmcia/cisreg.h> 28 #include <pcmcia/ds.h> 29 30 #include <linux/usb_sl811.h> 31 32 MODULE_AUTHOR("Botond Botyanszki"); 33 MODULE_DESCRIPTION("REX-CFU1U PCMCIA driver for 2.6"); 34 MODULE_LICENSE("GPL"); 35 36 37 /*====================================================================*/ 38 /* MACROS */ 39 /*====================================================================*/ 40 41 #if defined(DEBUG) || defined(CONFIG_USB_DEBUG) || defined(PCMCIA_DEBUG) 42 43 static int pc_debug = 0; 44 module_param(pc_debug, int, 0644); 45 46 #define DBG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG "sl811_cs: " args) 47 48 #else 49 #define DBG(n, args...) do{}while(0) 50 #endif /* no debugging */ 51 52 #define INFO(args...) printk(KERN_INFO "sl811_cs: " args) 53 54 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444) 55 56 #define CS_CHECK(fn, ret) \ 57 do { \ 58 last_fn = (fn); \ 59 if ((last_ret = (ret)) != 0) \ 60 goto cs_failed; \ 61 } while (0) 62 63 /*====================================================================*/ 64 /* VARIABLES */ 65 /*====================================================================*/ 66 67 static const char driver_name[DEV_NAME_LEN] = "sl811_cs"; 68 69 static dev_link_t *dev_list = NULL; 70 71 typedef struct local_info_t { 72 dev_link_t link; 73 dev_node_t node; 74 } local_info_t; 75 76 /*====================================================================*/ 77 78 static void release_platform_dev(struct device * dev) 79 { 80 DBG(0, "sl811_cs platform_dev release\n"); 81 dev->parent = NULL; 82 } 83 84 static struct sl811_platform_data platform_data = { 85 .potpg = 100, 86 .power = 50, /* == 100mA */ 87 // .reset = ... FIXME: invoke CF reset on the card 88 }; 89 90 static struct resource resources[] = { 91 [0] = { 92 .flags = IORESOURCE_IRQ, 93 }, 94 [1] = { 95 // .name = "address", 96 .flags = IORESOURCE_IO, 97 }, 98 [2] = { 99 // .name = "data", 100 .flags = IORESOURCE_IO, 101 }, 102 }; 103 104 extern struct device_driver sl811h_driver; 105 106 static struct platform_device platform_dev = { 107 .id = -1, 108 .dev = { 109 .platform_data = &platform_data, 110 .release = release_platform_dev, 111 }, 112 .resource = resources, 113 .num_resources = ARRAY_SIZE(resources), 114 }; 115 116 static int sl811_hc_init(struct device *parent, ioaddr_t base_addr, int irq) 117 { 118 if (platform_dev.dev.parent) 119 return -EBUSY; 120 platform_dev.dev.parent = parent; 121 122 /* finish seting up the platform device */ 123 resources[0].start = irq; 124 125 resources[1].start = base_addr; 126 resources[1].end = base_addr; 127 128 resources[2].start = base_addr + 1; 129 resources[2].end = base_addr + 1; 130 131 /* The driver core will probe for us. We know sl811-hcd has been 132 * initialized already because of the link order dependency. 133 */ 134 platform_dev.name = sl811h_driver.name; 135 return platform_device_register(&platform_dev); 136 } 137 138 /*====================================================================*/ 139 140 static void sl811_cs_detach(dev_link_t *link) 141 { 142 dev_link_t **linkp; 143 144 DBG(0, "sl811_cs_detach(0x%p)\n", link); 145 146 /* Locate device structure */ 147 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) { 148 if (*linkp == link) 149 break; 150 } 151 if (*linkp == NULL) 152 return; 153 154 /* Break the link with Card Services */ 155 if (link->handle) 156 pcmcia_deregister_client(link->handle); 157 158 /* Unlink device structure, and free it */ 159 *linkp = link->next; 160 /* This points to the parent local_info_t struct */ 161 kfree(link->priv); 162 } 163 164 static void sl811_cs_release(dev_link_t * link) 165 { 166 167 DBG(0, "sl811_cs_release(0x%p)\n", link); 168 169 if (link->open) { 170 DBG(1, "sl811_cs: release postponed, '%s' still open\n", 171 link->dev->dev_name); 172 link->state |= DEV_STALE_CONFIG; 173 return; 174 } 175 176 /* Unlink the device chain */ 177 link->dev = NULL; 178 179 platform_device_unregister(&platform_dev); 180 pcmcia_release_configuration(link->handle); 181 if (link->io.NumPorts1) 182 pcmcia_release_io(link->handle, &link->io); 183 if (link->irq.AssignedIRQ) 184 pcmcia_release_irq(link->handle, &link->irq); 185 link->state &= ~DEV_CONFIG; 186 187 if (link->state & DEV_STALE_LINK) 188 sl811_cs_detach(link); 189 } 190 191 static void sl811_cs_config(dev_link_t *link) 192 { 193 client_handle_t handle = link->handle; 194 struct device *parent = &handle_to_dev(handle); 195 local_info_t *dev = link->priv; 196 tuple_t tuple; 197 cisparse_t parse; 198 int last_fn, last_ret; 199 u_char buf[64]; 200 config_info_t conf; 201 cistpl_cftable_entry_t dflt = { 0 }; 202 203 DBG(0, "sl811_cs_config(0x%p)\n", link); 204 205 tuple.DesiredTuple = CISTPL_CONFIG; 206 tuple.Attributes = 0; 207 tuple.TupleData = buf; 208 tuple.TupleDataMax = sizeof(buf); 209 tuple.TupleOffset = 0; 210 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); 211 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple)); 212 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse)); 213 link->conf.ConfigBase = parse.config.base; 214 link->conf.Present = parse.config.rmask[0]; 215 216 /* Configure card */ 217 link->state |= DEV_CONFIG; 218 219 /* Look up the current Vcc */ 220 CS_CHECK(GetConfigurationInfo, 221 pcmcia_get_configuration_info(handle, &conf)); 222 link->conf.Vcc = conf.Vcc; 223 224 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; 225 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); 226 while (1) { 227 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry); 228 229 if (pcmcia_get_tuple_data(handle, &tuple) != 0 230 || pcmcia_parse_tuple(handle, &tuple, &parse) 231 != 0) 232 goto next_entry; 233 234 if (cfg->flags & CISTPL_CFTABLE_DEFAULT) { 235 dflt = *cfg; 236 } 237 238 if (cfg->index == 0) 239 goto next_entry; 240 241 link->conf.ConfigIndex = cfg->index; 242 243 /* Use power settings for Vcc and Vpp if present */ 244 /* Note that the CIS values need to be rescaled */ 245 if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) { 246 if (cfg->vcc.param[CISTPL_POWER_VNOM]/10000 247 != conf.Vcc) 248 goto next_entry; 249 } else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM)) { 250 if (dflt.vcc.param[CISTPL_POWER_VNOM]/10000 251 != conf.Vcc) 252 goto next_entry; 253 } 254 255 if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM)) 256 link->conf.Vpp1 = link->conf.Vpp2 = 257 cfg->vpp1.param[CISTPL_POWER_VNOM]/10000; 258 else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM)) 259 link->conf.Vpp1 = link->conf.Vpp2 = 260 dflt.vpp1.param[CISTPL_POWER_VNOM]/10000; 261 262 /* we need an interrupt */ 263 if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1) 264 link->conf.Attributes |= CONF_ENABLE_IRQ; 265 266 /* IO window settings */ 267 link->io.NumPorts1 = link->io.NumPorts2 = 0; 268 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) { 269 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io; 270 271 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; 272 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; 273 link->io.BasePort1 = io->win[0].base; 274 link->io.NumPorts1 = io->win[0].len; 275 276 if (pcmcia_request_io(link->handle, &link->io) != 0) 277 goto next_entry; 278 } 279 break; 280 281 next_entry: 282 if (link->io.NumPorts1) 283 pcmcia_release_io(link->handle, &link->io); 284 last_ret = pcmcia_get_next_tuple(handle, &tuple); 285 } 286 287 /* require an IRQ and two registers */ 288 if (!link->io.NumPorts1 || link->io.NumPorts1 < 2) 289 goto cs_failed; 290 if (link->conf.Attributes & CONF_ENABLE_IRQ) 291 CS_CHECK(RequestIRQ, 292 pcmcia_request_irq(link->handle, &link->irq)); 293 else 294 goto cs_failed; 295 296 CS_CHECK(RequestConfiguration, 297 pcmcia_request_configuration(link->handle, &link->conf)); 298 299 sprintf(dev->node.dev_name, driver_name); 300 dev->node.major = dev->node.minor = 0; 301 link->dev = &dev->node; 302 303 printk(KERN_INFO "%s: index 0x%02x: Vcc %d.%d", 304 dev->node.dev_name, link->conf.ConfigIndex, 305 link->conf.Vcc/10, link->conf.Vcc%10); 306 if (link->conf.Vpp1) 307 printk(", Vpp %d.%d", link->conf.Vpp1/10, link->conf.Vpp1%10); 308 printk(", irq %d", link->irq.AssignedIRQ); 309 printk(", io 0x%04x-0x%04x", link->io.BasePort1, 310 link->io.BasePort1+link->io.NumPorts1-1); 311 printk("\n"); 312 313 link->state &= ~DEV_CONFIG_PENDING; 314 315 if (sl811_hc_init(parent, link->io.BasePort1, link->irq.AssignedIRQ) 316 < 0) { 317 cs_failed: 318 printk("sl811_cs_config failed\n"); 319 cs_error(link->handle, last_fn, last_ret); 320 sl811_cs_release(link); 321 link->state &= ~DEV_CONFIG_PENDING; 322 } 323 } 324 325 static int 326 sl811_cs_event(event_t event, int priority, event_callback_args_t *args) 327 { 328 dev_link_t *link = args->client_data; 329 330 DBG(1, "sl811_cs_event(0x%06x)\n", event); 331 332 switch (event) { 333 case CS_EVENT_CARD_REMOVAL: 334 link->state &= ~DEV_PRESENT; 335 if (link->state & DEV_CONFIG) 336 sl811_cs_release(link); 337 break; 338 339 case CS_EVENT_CARD_INSERTION: 340 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; 341 sl811_cs_config(link); 342 break; 343 344 case CS_EVENT_PM_SUSPEND: 345 link->state |= DEV_SUSPEND; 346 /* Fall through... */ 347 case CS_EVENT_RESET_PHYSICAL: 348 if (link->state & DEV_CONFIG) 349 pcmcia_release_configuration(link->handle); 350 break; 351 352 case CS_EVENT_PM_RESUME: 353 link->state &= ~DEV_SUSPEND; 354 /* Fall through... */ 355 case CS_EVENT_CARD_RESET: 356 if (link->state & DEV_CONFIG) 357 pcmcia_request_configuration(link->handle, &link->conf); 358 DBG(0, "reset sl811-hcd here?\n"); 359 break; 360 } 361 return 0; 362 } 363 364 static dev_link_t *sl811_cs_attach(void) 365 { 366 local_info_t *local; 367 dev_link_t *link; 368 client_reg_t client_reg; 369 int ret; 370 371 local = kmalloc(sizeof(local_info_t), GFP_KERNEL); 372 if (!local) 373 return NULL; 374 memset(local, 0, sizeof(local_info_t)); 375 link = &local->link; 376 link->priv = local; 377 378 /* Initialize */ 379 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; 380 link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID; 381 link->irq.Handler = NULL; 382 383 link->conf.Attributes = 0; 384 link->conf.Vcc = 33; 385 link->conf.IntType = INT_MEMORY_AND_IO; 386 387 /* Register with Card Services */ 388 link->next = dev_list; 389 dev_list = link; 390 client_reg.dev_info = (dev_info_t *) &driver_name; 391 client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE; 392 client_reg.Version = 0x0210; 393 client_reg.event_callback_args.client_data = link; 394 ret = pcmcia_register_client(&link->handle, &client_reg); 395 if (ret != CS_SUCCESS) { 396 cs_error(link->handle, RegisterClient, ret); 397 sl811_cs_detach(link); 398 return NULL; 399 } 400 401 return link; 402 } 403 404 static struct pcmcia_device_id sl811_ids[] = { 405 PCMCIA_DEVICE_MANF_CARD(0xc015, 0x0001), /* RATOC USB HOST CF+ Card */ 406 PCMCIA_DEVICE_NULL, 407 }; 408 MODULE_DEVICE_TABLE(pcmcia, sl811_ids); 409 410 static struct pcmcia_driver sl811_cs_driver = { 411 .owner = THIS_MODULE, 412 .drv = { 413 .name = (char *)driver_name, 414 }, 415 .attach = sl811_cs_attach, 416 .event = sl811_cs_event, 417 .detach = sl811_cs_detach, 418 .id_table = sl811_ids, 419 }; 420 421 /*====================================================================*/ 422 423 static int __init init_sl811_cs(void) 424 { 425 return pcmcia_register_driver(&sl811_cs_driver); 426 } 427 module_init(init_sl811_cs); 428 429 static void __exit exit_sl811_cs(void) 430 { 431 pcmcia_unregister_driver(&sl811_cs_driver); 432 } 433 module_exit(exit_sl811_cs); 434