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/ptrace.h> 18#include <linux/slab.h> 19#include <linux/string.h> 20#include <asm/io.h> 21#include <asm/system.h> 22 23#include <pcmcia/cs_types.h> 24#include <pcmcia/cs.h> 25#include <pcmcia/cistpl.h> 26#include <pcmcia/ds.h> 27#include "hisax_cfg.h" 28 29MODULE_DESCRIPTION("ISDN4Linux: PCMCIA client driver for AVM A1/Fritz!PCMCIA cards"); 30MODULE_AUTHOR("Carsten Paeth"); 31MODULE_LICENSE("GPL"); 32 33/* 34 All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If 35 you do not define PCMCIA_DEBUG at all, all the debug code will be 36 left out. If you compile with PCMCIA_DEBUG=0, the debug code will 37 be present but disabled -- but it can then be enabled for specific 38 modules at load time with a 'pc_debug=#' option to insmod. 39*/ 40#ifdef PCMCIA_DEBUG 41static int pc_debug = PCMCIA_DEBUG; 42module_param(pc_debug, int, 0); 43#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args); 44static char *version = 45"avma1_cs.c 1.00 1998/01/23 10:00:00 (Carsten Paeth)"; 46#else 47#define DEBUG(n, args...) 48#endif 49 50/*====================================================================*/ 51 52/* Parameters that can be set with 'insmod' */ 53 54static int isdnprot = 2; 55 56module_param(isdnprot, int, 0); 57 58/*====================================================================*/ 59 60/* 61 The event() function is this driver's Card Services event handler. 62 It will be called by Card Services when an appropriate card status 63 event is received. The config() and release() entry points are 64 used to configure or release a socket, in response to card insertion 65 and ejection events. They are invoked from the skeleton event 66 handler. 67*/ 68 69static int avma1cs_config(struct pcmcia_device *link); 70static void avma1cs_release(struct pcmcia_device *link); 71 72/* 73 The attach() and detach() entry points are used to create and destroy 74 "instances" of the driver, where each instance represents everything 75 needed to manage one actual PCMCIA card. 76*/ 77 78static void avma1cs_detach(struct pcmcia_device *p_dev); 79 80 81/* 82 A linked list of "instances" of the skeleton device. Each actual 83 PCMCIA card corresponds to one device instance, and is described 84 by one struct pcmcia_device structure (defined in ds.h). 85 86 You may not want to use a linked list for this -- for example, the 87 memory card driver uses an array of struct pcmcia_device pointers, where minor 88 device numbers are used to derive the corresponding array index. 89*/ 90 91/* 92 A driver needs to provide a dev_node_t structure for each device 93 on a card. In some cases, there is only one device per card (for 94 example, ethernet cards, modems). In other cases, there may be 95 many actual or logical devices (SCSI adapters, memory cards with 96 multiple partitions). The dev_node_t structures need to be kept 97 in a linked list starting at the 'dev' field of a struct pcmcia_device 98 structure. We allocate them in the card's private data structure, 99 because they generally can't be allocated dynamically. 100*/ 101 102typedef struct local_info_t { 103 dev_node_t node; 104} local_info_t; 105 106/*====================================================================== 107 108 avma1cs_attach() creates an "instance" of the driver, allocating 109 local data structures for one device. The device is registered 110 with Card Services. 111 112 The dev_link structure is initialized, but we don't actually 113 configure the card at this point -- we wait until we receive a 114 card insertion event. 115 116======================================================================*/ 117 118static int avma1cs_probe(struct pcmcia_device *p_dev) 119{ 120 local_info_t *local; 121 122 DEBUG(0, "avma1cs_attach()\n"); 123 124 /* Allocate space for private device-specific data */ 125 local = kzalloc(sizeof(local_info_t), GFP_KERNEL); 126 if (!local) 127 return -ENOMEM; 128 129 p_dev->priv = local; 130 131 /* The io structure describes IO port mapping */ 132 p_dev->io.NumPorts1 = 16; 133 p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_8; 134 p_dev->io.NumPorts2 = 16; 135 p_dev->io.Attributes2 = IO_DATA_PATH_WIDTH_16; 136 p_dev->io.IOAddrLines = 5; 137 138 /* Interrupt setup */ 139 p_dev->irq.Attributes = IRQ_TYPE_EXCLUSIVE; 140 p_dev->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED; 141 142 p_dev->irq.IRQInfo1 = IRQ_LEVEL_ID; 143 144 /* General socket configuration */ 145 p_dev->conf.Attributes = CONF_ENABLE_IRQ; 146 p_dev->conf.IntType = INT_MEMORY_AND_IO; 147 p_dev->conf.ConfigIndex = 1; 148 p_dev->conf.Present = PRESENT_OPTION; 149 150 return avma1cs_config(p_dev); 151} /* avma1cs_attach */ 152 153/*====================================================================== 154 155 This deletes a driver "instance". The device is de-registered 156 with Card Services. If it has been released, all local data 157 structures are freed. Otherwise, the structures will be freed 158 when the device is released. 159 160======================================================================*/ 161 162static void avma1cs_detach(struct pcmcia_device *link) 163{ 164 DEBUG(0, "avma1cs_detach(0x%p)\n", link); 165 avma1cs_release(link); 166 kfree(link->priv); 167} /* avma1cs_detach */ 168 169/*====================================================================== 170 171 avma1cs_config() is scheduled to run after a CARD_INSERTION event 172 is received, to configure the PCMCIA socket, and to make the 173 ethernet device available to the system. 174 175======================================================================*/ 176 177static int get_tuple(struct pcmcia_device *handle, tuple_t *tuple, 178 cisparse_t *parse) 179{ 180 int i = pcmcia_get_tuple_data(handle, tuple); 181 if (i != CS_SUCCESS) return i; 182 return pcmcia_parse_tuple(handle, tuple, parse); 183} 184 185static int first_tuple(struct pcmcia_device *handle, tuple_t *tuple, 186 cisparse_t *parse) 187{ 188 int i = pcmcia_get_first_tuple(handle, tuple); 189 if (i != CS_SUCCESS) return i; 190 return get_tuple(handle, tuple, parse); 191} 192 193static int next_tuple(struct pcmcia_device *handle, tuple_t *tuple, 194 cisparse_t *parse) 195{ 196 int i = pcmcia_get_next_tuple(handle, tuple); 197 if (i != CS_SUCCESS) return i; 198 return get_tuple(handle, tuple, parse); 199} 200 201static int avma1cs_config(struct pcmcia_device *link) 202{ 203 tuple_t tuple; 204 cisparse_t parse; 205 cistpl_cftable_entry_t *cf = &parse.cftable_entry; 206 local_info_t *dev; 207 int i; 208 u_char buf[64]; 209 char devname[128]; 210 IsdnCard_t icard; 211 int busy = 0; 212 213 dev = link->priv; 214 215 DEBUG(0, "avma1cs_config(0x%p)\n", link); 216 217 do { 218 devname[0] = 0; 219 if (link->prod_id[1]) 220 strlcpy(devname, link->prod_id[1], sizeof(devname)); 221 222 /* 223 * find IO port 224 */ 225 tuple.TupleData = (cisdata_t *)buf; 226 tuple.TupleOffset = 0; tuple.TupleDataMax = 255; 227 tuple.Attributes = 0; 228 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; 229 i = first_tuple(link, &tuple, &parse); 230 while (i == CS_SUCCESS) { 231 if (cf->io.nwin > 0) { 232 link->conf.ConfigIndex = cf->index; 233 link->io.BasePort1 = cf->io.win[0].base; 234 link->io.NumPorts1 = cf->io.win[0].len; 235 link->io.NumPorts2 = 0; 236 printk(KERN_INFO "avma1_cs: testing i/o %#x-%#x\n", 237 link->io.BasePort1, 238 link->io.BasePort1+link->io.NumPorts1 - 1); 239 i = pcmcia_request_io(link, &link->io); 240 if (i == CS_SUCCESS) goto found_port; 241 } 242 i = next_tuple(link, &tuple, &parse); 243 } 244 245found_port: 246 if (i != CS_SUCCESS) { 247 cs_error(link, RequestIO, i); 248 break; 249 } 250 251 /* 252 * allocate an interrupt line 253 */ 254 i = pcmcia_request_irq(link, &link->irq); 255 if (i != CS_SUCCESS) { 256 cs_error(link, RequestIRQ, i); 257 /* undo */ 258 pcmcia_disable_device(link); 259 break; 260 } 261 262 /* 263 * configure the PCMCIA socket 264 */ 265 i = pcmcia_request_configuration(link, &link->conf); 266 if (i != CS_SUCCESS) { 267 cs_error(link, RequestConfiguration, i); 268 pcmcia_disable_device(link); 269 break; 270 } 271 272 } while (0); 273 274 /* At this point, the dev_node_t structure(s) should be 275 initialized and arranged in a linked list at link->dev. */ 276 277 strcpy(dev->node.dev_name, "A1"); 278 dev->node.major = 45; 279 dev->node.minor = 0; 280 link->dev_node = &dev->node; 281 282 /* If any step failed, release any partially configured state */ 283 if (i != 0) { 284 avma1cs_release(link); 285 return -ENODEV; 286 } 287 288 printk(KERN_NOTICE "avma1_cs: checking at i/o %#x, irq %d\n", 289 link->io.BasePort1, link->irq.AssignedIRQ); 290 291 icard.para[0] = link->irq.AssignedIRQ; 292 icard.para[1] = link->io.BasePort1; 293 icard.protocol = isdnprot; 294 icard.typ = ISDN_CTYPE_A1_PCMCIA; 295 296 i = hisax_init_pcmcia(link, &busy, &icard); 297 if (i < 0) { 298 printk(KERN_ERR "avma1_cs: failed to initialize AVM A1 PCMCIA %d at i/o %#x\n", i, link->io.BasePort1); 299 avma1cs_release(link); 300 return -ENODEV; 301 } 302 dev->node.minor = i; 303 304 return 0; 305} /* avma1cs_config */ 306 307/*====================================================================== 308 309 After a card is removed, avma1cs_release() will unregister the net 310 device, and release the PCMCIA configuration. If the device is 311 still open, this will be postponed until it is closed. 312 313======================================================================*/ 314 315static void avma1cs_release(struct pcmcia_device *link) 316{ 317 local_info_t *local = link->priv; 318 319 DEBUG(0, "avma1cs_release(0x%p)\n", link); 320 321 /* now unregister function with hisax */ 322 HiSax_closecard(local->node.minor); 323 324 pcmcia_disable_device(link); 325} /* avma1cs_release */ 326 327 328static struct pcmcia_device_id avma1cs_ids[] = { 329 PCMCIA_DEVICE_PROD_ID12("AVM", "ISDN A", 0x95d42008, 0xadc9d4bb), 330 PCMCIA_DEVICE_PROD_ID12("ISDN", "CARD", 0x8d9761c8, 0x01c5aa7b), 331 PCMCIA_DEVICE_NULL 332}; 333MODULE_DEVICE_TABLE(pcmcia, avma1cs_ids); 334 335static struct pcmcia_driver avma1cs_driver = { 336 .owner = THIS_MODULE, 337 .drv = { 338 .name = "avma1_cs", 339 }, 340 .probe = avma1cs_probe, 341 .remove = avma1cs_detach, 342 .id_table = avma1cs_ids, 343}; 344 345/*====================================================================*/ 346 347static int __init init_avma1_cs(void) 348{ 349 return(pcmcia_register_driver(&avma1cs_driver)); 350} 351 352static void __exit exit_avma1_cs(void) 353{ 354 pcmcia_unregister_driver(&avma1cs_driver); 355} 356 357module_init(init_avma1_cs); 358module_exit(exit_avma1_cs); 359