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(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 typedef struct local_info_t { 70 dev_link_t link; 71 dev_node_t node; 72 } local_info_t; 73 74 static void sl811_cs_release(dev_link_t * link); 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 platform_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 created 133 * by referencing "sl811h_driver". 134 */ 135 platform_dev.name = sl811h_driver.driver.name; 136 return platform_device_register(&platform_dev); 137 } 138 139 /*====================================================================*/ 140 141 static void sl811_cs_detach(struct pcmcia_device *p_dev) 142 { 143 dev_link_t *link = dev_to_instance(p_dev); 144 145 DBG(0, "sl811_cs_detach(0x%p)\n", link); 146 147 link->state &= ~DEV_PRESENT; 148 if (link->state & DEV_CONFIG) 149 sl811_cs_release(link); 150 151 /* This points to the parent local_info_t struct */ 152 kfree(link->priv); 153 } 154 155 static void sl811_cs_release(dev_link_t * link) 156 { 157 158 DBG(0, "sl811_cs_release(0x%p)\n", link); 159 160 /* Unlink the device chain */ 161 link->dev = NULL; 162 163 platform_device_unregister(&platform_dev); 164 pcmcia_release_configuration(link->handle); 165 if (link->io.NumPorts1) 166 pcmcia_release_io(link->handle, &link->io); 167 if (link->irq.AssignedIRQ) 168 pcmcia_release_irq(link->handle, &link->irq); 169 link->state &= ~DEV_CONFIG; 170 } 171 172 static void sl811_cs_config(dev_link_t *link) 173 { 174 client_handle_t handle = link->handle; 175 struct device *parent = &handle_to_dev(handle); 176 local_info_t *dev = link->priv; 177 tuple_t tuple; 178 cisparse_t parse; 179 int last_fn, last_ret; 180 u_char buf[64]; 181 config_info_t conf; 182 cistpl_cftable_entry_t dflt = { 0 }; 183 184 DBG(0, "sl811_cs_config(0x%p)\n", link); 185 186 tuple.DesiredTuple = CISTPL_CONFIG; 187 tuple.Attributes = 0; 188 tuple.TupleData = buf; 189 tuple.TupleDataMax = sizeof(buf); 190 tuple.TupleOffset = 0; 191 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); 192 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple)); 193 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse)); 194 link->conf.ConfigBase = parse.config.base; 195 link->conf.Present = parse.config.rmask[0]; 196 197 /* Configure card */ 198 link->state |= DEV_CONFIG; 199 200 /* Look up the current Vcc */ 201 CS_CHECK(GetConfigurationInfo, 202 pcmcia_get_configuration_info(handle, &conf)); 203 link->conf.Vcc = conf.Vcc; 204 205 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; 206 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); 207 while (1) { 208 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry); 209 210 if (pcmcia_get_tuple_data(handle, &tuple) != 0 211 || pcmcia_parse_tuple(handle, &tuple, &parse) 212 != 0) 213 goto next_entry; 214 215 if (cfg->flags & CISTPL_CFTABLE_DEFAULT) { 216 dflt = *cfg; 217 } 218 219 if (cfg->index == 0) 220 goto next_entry; 221 222 link->conf.ConfigIndex = cfg->index; 223 224 /* Use power settings for Vcc and Vpp if present */ 225 /* Note that the CIS values need to be rescaled */ 226 if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) { 227 if (cfg->vcc.param[CISTPL_POWER_VNOM]/10000 228 != conf.Vcc) 229 goto next_entry; 230 } else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM)) { 231 if (dflt.vcc.param[CISTPL_POWER_VNOM]/10000 232 != conf.Vcc) 233 goto next_entry; 234 } 235 236 if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM)) 237 link->conf.Vpp1 = link->conf.Vpp2 = 238 cfg->vpp1.param[CISTPL_POWER_VNOM]/10000; 239 else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM)) 240 link->conf.Vpp1 = link->conf.Vpp2 = 241 dflt.vpp1.param[CISTPL_POWER_VNOM]/10000; 242 243 /* we need an interrupt */ 244 if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1) 245 link->conf.Attributes |= CONF_ENABLE_IRQ; 246 247 /* IO window settings */ 248 link->io.NumPorts1 = link->io.NumPorts2 = 0; 249 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) { 250 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io; 251 252 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; 253 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; 254 link->io.BasePort1 = io->win[0].base; 255 link->io.NumPorts1 = io->win[0].len; 256 257 if (pcmcia_request_io(link->handle, &link->io) != 0) 258 goto next_entry; 259 } 260 break; 261 262 next_entry: 263 if (link->io.NumPorts1) 264 pcmcia_release_io(link->handle, &link->io); 265 last_ret = pcmcia_get_next_tuple(handle, &tuple); 266 } 267 268 /* require an IRQ and two registers */ 269 if (!link->io.NumPorts1 || link->io.NumPorts1 < 2) 270 goto cs_failed; 271 if (link->conf.Attributes & CONF_ENABLE_IRQ) 272 CS_CHECK(RequestIRQ, 273 pcmcia_request_irq(link->handle, &link->irq)); 274 else 275 goto cs_failed; 276 277 CS_CHECK(RequestConfiguration, 278 pcmcia_request_configuration(link->handle, &link->conf)); 279 280 sprintf(dev->node.dev_name, driver_name); 281 dev->node.major = dev->node.minor = 0; 282 link->dev = &dev->node; 283 284 printk(KERN_INFO "%s: index 0x%02x: Vcc %d.%d", 285 dev->node.dev_name, link->conf.ConfigIndex, 286 link->conf.Vcc/10, link->conf.Vcc%10); 287 if (link->conf.Vpp1) 288 printk(", Vpp %d.%d", link->conf.Vpp1/10, link->conf.Vpp1%10); 289 printk(", irq %d", link->irq.AssignedIRQ); 290 printk(", io 0x%04x-0x%04x", link->io.BasePort1, 291 link->io.BasePort1+link->io.NumPorts1-1); 292 printk("\n"); 293 294 link->state &= ~DEV_CONFIG_PENDING; 295 296 if (sl811_hc_init(parent, link->io.BasePort1, link->irq.AssignedIRQ) 297 < 0) { 298 cs_failed: 299 printk("sl811_cs_config failed\n"); 300 cs_error(link->handle, last_fn, last_ret); 301 sl811_cs_release(link); 302 link->state &= ~DEV_CONFIG_PENDING; 303 } 304 } 305 306 static int sl811_suspend(struct pcmcia_device *dev) 307 { 308 dev_link_t *link = dev_to_instance(dev); 309 310 link->state |= DEV_SUSPEND; 311 if (link->state & DEV_CONFIG) 312 pcmcia_release_configuration(link->handle); 313 314 return 0; 315 } 316 317 static int sl811_resume(struct pcmcia_device *dev) 318 { 319 dev_link_t *link = dev_to_instance(dev); 320 321 link->state &= ~DEV_SUSPEND; 322 if (link->state & DEV_CONFIG) 323 pcmcia_request_configuration(link->handle, &link->conf); 324 325 return 0; 326 } 327 328 static int sl811_cs_attach(struct pcmcia_device *p_dev) 329 { 330 local_info_t *local; 331 dev_link_t *link; 332 333 local = kmalloc(sizeof(local_info_t), GFP_KERNEL); 334 if (!local) 335 return -ENOMEM; 336 memset(local, 0, sizeof(local_info_t)); 337 link = &local->link; 338 link->priv = local; 339 340 /* Initialize */ 341 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; 342 link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID; 343 link->irq.Handler = NULL; 344 345 link->conf.Attributes = 0; 346 link->conf.Vcc = 33; 347 link->conf.IntType = INT_MEMORY_AND_IO; 348 349 link->handle = p_dev; 350 p_dev->instance = link; 351 352 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; 353 sl811_cs_config(link); 354 355 return 0; 356 } 357 358 static struct pcmcia_device_id sl811_ids[] = { 359 PCMCIA_DEVICE_MANF_CARD(0xc015, 0x0001), /* RATOC USB HOST CF+ Card */ 360 PCMCIA_DEVICE_NULL, 361 }; 362 MODULE_DEVICE_TABLE(pcmcia, sl811_ids); 363 364 static struct pcmcia_driver sl811_cs_driver = { 365 .owner = THIS_MODULE, 366 .drv = { 367 .name = (char *)driver_name, 368 }, 369 .probe = sl811_cs_attach, 370 .remove = sl811_cs_detach, 371 .id_table = sl811_ids, 372 .suspend = sl811_suspend, 373 .resume = sl811_resume, 374 }; 375 376 /*====================================================================*/ 377 378 static int __init init_sl811_cs(void) 379 { 380 return pcmcia_register_driver(&sl811_cs_driver); 381 } 382 module_init(init_sl811_cs); 383 384 static void __exit exit_sl811_cs(void) 385 { 386 pcmcia_unregister_driver(&sl811_cs_driver); 387 } 388 module_exit(exit_sl811_cs); 389