Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * IEEE 1394 for Linux |
| 3 | * |
| 4 | * Core support: hpsb_packet management, packet handling and forwarding to |
| 5 | * highlevel or lowlevel code |
| 6 | * |
| 7 | * Copyright (C) 1999, 2000 Andreas E. Bombe |
| 8 | * 2002 Manfred Weihs <weihs@ict.tuwien.ac.at> |
| 9 | * |
| 10 | * This code is licensed under the GPL. See the file COPYING in the root |
| 11 | * directory of the kernel sources for details. |
| 12 | * |
| 13 | * |
| 14 | * Contributions: |
| 15 | * |
| 16 | * Manfred Weihs <weihs@ict.tuwien.ac.at> |
| 17 | * loopback functionality in hpsb_send_packet |
| 18 | * allow highlevel drivers to disable automatic response generation |
| 19 | * and to generate responses themselves (deferred) |
| 20 | * |
| 21 | */ |
| 22 | |
| 23 | #include <linux/config.h> |
| 24 | #include <linux/kernel.h> |
| 25 | #include <linux/list.h> |
| 26 | #include <linux/string.h> |
| 27 | #include <linux/init.h> |
| 28 | #include <linux/slab.h> |
| 29 | #include <linux/interrupt.h> |
| 30 | #include <linux/module.h> |
| 31 | #include <linux/moduleparam.h> |
| 32 | #include <linux/bitops.h> |
| 33 | #include <linux/kdev_t.h> |
| 34 | #include <linux/skbuff.h> |
| 35 | #include <linux/suspend.h> |
| 36 | |
| 37 | #include <asm/byteorder.h> |
| 38 | #include <asm/semaphore.h> |
| 39 | |
| 40 | #include "ieee1394_types.h" |
| 41 | #include "ieee1394.h" |
| 42 | #include "hosts.h" |
| 43 | #include "ieee1394_core.h" |
| 44 | #include "highlevel.h" |
| 45 | #include "ieee1394_transactions.h" |
| 46 | #include "csr.h" |
| 47 | #include "nodemgr.h" |
| 48 | #include "dma.h" |
| 49 | #include "iso.h" |
| 50 | #include "config_roms.h" |
| 51 | |
| 52 | /* |
| 53 | * Disable the nodemgr detection and config rom reading functionality. |
| 54 | */ |
| 55 | static int disable_nodemgr = 0; |
| 56 | module_param(disable_nodemgr, int, 0444); |
| 57 | MODULE_PARM_DESC(disable_nodemgr, "Disable nodemgr functionality."); |
| 58 | |
| 59 | /* Disable Isochronous Resource Manager functionality */ |
| 60 | int hpsb_disable_irm = 0; |
| 61 | module_param_named(disable_irm, hpsb_disable_irm, bool, 0); |
| 62 | MODULE_PARM_DESC(disable_irm, |
| 63 | "Disable Isochronous Resource Manager functionality."); |
| 64 | |
| 65 | /* We are GPL, so treat us special */ |
| 66 | MODULE_LICENSE("GPL"); |
| 67 | |
| 68 | /* Some globals used */ |
| 69 | const char *hpsb_speedto_str[] = { "S100", "S200", "S400", "S800", "S1600", "S3200" }; |
gregkh@suse.de | 7e25ab9 | 2005-03-23 09:53:36 -0800 | [diff] [blame^] | 70 | struct class *hpsb_protocol_class; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | |
| 72 | #ifdef CONFIG_IEEE1394_VERBOSEDEBUG |
| 73 | static void dump_packet(const char *text, quadlet_t *data, int size) |
| 74 | { |
| 75 | int i; |
| 76 | |
| 77 | size /= 4; |
| 78 | size = (size > 4 ? 4 : size); |
| 79 | |
| 80 | printk(KERN_DEBUG "ieee1394: %s", text); |
| 81 | for (i = 0; i < size; i++) |
| 82 | printk(" %08x", data[i]); |
| 83 | printk("\n"); |
| 84 | } |
| 85 | #else |
| 86 | #define dump_packet(x,y,z) |
| 87 | #endif |
| 88 | |
| 89 | static void abort_requests(struct hpsb_host *host); |
| 90 | static void queue_packet_complete(struct hpsb_packet *packet); |
| 91 | |
| 92 | |
| 93 | /** |
| 94 | * hpsb_set_packet_complete_task - set the task that runs when a packet |
| 95 | * completes. You cannot call this more than once on a single packet |
| 96 | * before it is sent. |
| 97 | * |
| 98 | * @packet: the packet whose completion we want the task added to |
| 99 | * @routine: function to call |
| 100 | * @data: data (if any) to pass to the above function |
| 101 | */ |
| 102 | void hpsb_set_packet_complete_task(struct hpsb_packet *packet, |
| 103 | void (*routine)(void *), void *data) |
| 104 | { |
| 105 | WARN_ON(packet->complete_routine != NULL); |
| 106 | packet->complete_routine = routine; |
| 107 | packet->complete_data = data; |
| 108 | return; |
| 109 | } |
| 110 | |
| 111 | /** |
| 112 | * hpsb_alloc_packet - allocate new packet structure |
| 113 | * @data_size: size of the data block to be allocated |
| 114 | * |
| 115 | * This function allocates, initializes and returns a new &struct hpsb_packet. |
| 116 | * It can be used in interrupt context. A header block is always included, its |
| 117 | * size is big enough to contain all possible 1394 headers. The data block is |
| 118 | * only allocated when @data_size is not zero. |
| 119 | * |
| 120 | * For packets for which responses will be received the @data_size has to be big |
| 121 | * enough to contain the response's data block since no further allocation |
| 122 | * occurs at response matching time. |
| 123 | * |
| 124 | * The packet's generation value will be set to the current generation number |
| 125 | * for ease of use. Remember to overwrite it with your own recorded generation |
| 126 | * number if you can not be sure that your code will not race with a bus reset. |
| 127 | * |
| 128 | * Return value: A pointer to a &struct hpsb_packet or NULL on allocation |
| 129 | * failure. |
| 130 | */ |
| 131 | struct hpsb_packet *hpsb_alloc_packet(size_t data_size) |
| 132 | { |
| 133 | struct hpsb_packet *packet = NULL; |
| 134 | struct sk_buff *skb; |
| 135 | |
| 136 | data_size = ((data_size + 3) & ~3); |
| 137 | |
| 138 | skb = alloc_skb(data_size + sizeof(*packet), GFP_ATOMIC); |
| 139 | if (skb == NULL) |
| 140 | return NULL; |
| 141 | |
| 142 | memset(skb->data, 0, data_size + sizeof(*packet)); |
| 143 | |
| 144 | packet = (struct hpsb_packet *)skb->data; |
| 145 | packet->skb = skb; |
| 146 | |
| 147 | packet->header = packet->embedded_header; |
| 148 | packet->state = hpsb_unused; |
| 149 | packet->generation = -1; |
| 150 | INIT_LIST_HEAD(&packet->driver_list); |
| 151 | atomic_set(&packet->refcnt, 1); |
| 152 | |
| 153 | if (data_size) { |
| 154 | packet->data = (quadlet_t *)(skb->data + sizeof(*packet)); |
| 155 | packet->data_size = data_size; |
| 156 | } |
| 157 | |
| 158 | return packet; |
| 159 | } |
| 160 | |
| 161 | |
| 162 | /** |
| 163 | * hpsb_free_packet - free packet and data associated with it |
| 164 | * @packet: packet to free (is NULL safe) |
| 165 | * |
| 166 | * This function will free packet->data and finally the packet itself. |
| 167 | */ |
| 168 | void hpsb_free_packet(struct hpsb_packet *packet) |
| 169 | { |
| 170 | if (packet && atomic_dec_and_test(&packet->refcnt)) { |
| 171 | BUG_ON(!list_empty(&packet->driver_list)); |
| 172 | kfree_skb(packet->skb); |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | |
| 177 | int hpsb_reset_bus(struct hpsb_host *host, int type) |
| 178 | { |
| 179 | if (!host->in_bus_reset) { |
| 180 | host->driver->devctl(host, RESET_BUS, type); |
| 181 | return 0; |
| 182 | } else { |
| 183 | return 1; |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | |
| 188 | int hpsb_bus_reset(struct hpsb_host *host) |
| 189 | { |
| 190 | if (host->in_bus_reset) { |
| 191 | HPSB_NOTICE("%s called while bus reset already in progress", |
| 192 | __FUNCTION__); |
| 193 | return 1; |
| 194 | } |
| 195 | |
| 196 | abort_requests(host); |
| 197 | host->in_bus_reset = 1; |
| 198 | host->irm_id = -1; |
| 199 | host->is_irm = 0; |
| 200 | host->busmgr_id = -1; |
| 201 | host->is_busmgr = 0; |
| 202 | host->is_cycmst = 0; |
| 203 | host->node_count = 0; |
| 204 | host->selfid_count = 0; |
| 205 | |
| 206 | return 0; |
| 207 | } |
| 208 | |
| 209 | |
| 210 | /* |
| 211 | * Verify num_of_selfids SelfIDs and return number of nodes. Return zero in |
| 212 | * case verification failed. |
| 213 | */ |
| 214 | static int check_selfids(struct hpsb_host *host) |
| 215 | { |
| 216 | int nodeid = -1; |
| 217 | int rest_of_selfids = host->selfid_count; |
| 218 | struct selfid *sid = (struct selfid *)host->topology_map; |
| 219 | struct ext_selfid *esid; |
| 220 | int esid_seq = 23; |
| 221 | |
| 222 | host->nodes_active = 0; |
| 223 | |
| 224 | while (rest_of_selfids--) { |
| 225 | if (!sid->extended) { |
| 226 | nodeid++; |
| 227 | esid_seq = 0; |
| 228 | |
| 229 | if (sid->phy_id != nodeid) { |
| 230 | HPSB_INFO("SelfIDs failed monotony check with " |
| 231 | "%d", sid->phy_id); |
| 232 | return 0; |
| 233 | } |
| 234 | |
| 235 | if (sid->link_active) { |
| 236 | host->nodes_active++; |
| 237 | if (sid->contender) |
| 238 | host->irm_id = LOCAL_BUS | sid->phy_id; |
| 239 | } |
| 240 | } else { |
| 241 | esid = (struct ext_selfid *)sid; |
| 242 | |
| 243 | if ((esid->phy_id != nodeid) |
| 244 | || (esid->seq_nr != esid_seq)) { |
| 245 | HPSB_INFO("SelfIDs failed monotony check with " |
| 246 | "%d/%d", esid->phy_id, esid->seq_nr); |
| 247 | return 0; |
| 248 | } |
| 249 | esid_seq++; |
| 250 | } |
| 251 | sid++; |
| 252 | } |
| 253 | |
| 254 | esid = (struct ext_selfid *)(sid - 1); |
| 255 | while (esid->extended) { |
| 256 | if ((esid->porta == 0x2) || (esid->portb == 0x2) |
| 257 | || (esid->portc == 0x2) || (esid->portd == 0x2) |
| 258 | || (esid->porte == 0x2) || (esid->portf == 0x2) |
| 259 | || (esid->portg == 0x2) || (esid->porth == 0x2)) { |
| 260 | HPSB_INFO("SelfIDs failed root check on " |
| 261 | "extended SelfID"); |
| 262 | return 0; |
| 263 | } |
| 264 | esid--; |
| 265 | } |
| 266 | |
| 267 | sid = (struct selfid *)esid; |
| 268 | if ((sid->port0 == 0x2) || (sid->port1 == 0x2) || (sid->port2 == 0x2)) { |
| 269 | HPSB_INFO("SelfIDs failed root check"); |
| 270 | return 0; |
| 271 | } |
| 272 | |
| 273 | host->node_count = nodeid + 1; |
| 274 | return 1; |
| 275 | } |
| 276 | |
| 277 | static void build_speed_map(struct hpsb_host *host, int nodecount) |
| 278 | { |
| 279 | u8 speedcap[nodecount]; |
| 280 | u8 cldcnt[nodecount]; |
| 281 | u8 *map = host->speed_map; |
| 282 | struct selfid *sid; |
| 283 | struct ext_selfid *esid; |
| 284 | int i, j, n; |
| 285 | |
| 286 | for (i = 0; i < (nodecount * 64); i += 64) { |
| 287 | for (j = 0; j < nodecount; j++) { |
| 288 | map[i+j] = IEEE1394_SPEED_MAX; |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | for (i = 0; i < nodecount; i++) { |
| 293 | cldcnt[i] = 0; |
| 294 | } |
| 295 | |
| 296 | /* find direct children count and speed */ |
| 297 | for (sid = (struct selfid *)&host->topology_map[host->selfid_count-1], |
| 298 | n = nodecount - 1; |
| 299 | (void *)sid >= (void *)host->topology_map; sid--) { |
| 300 | if (sid->extended) { |
| 301 | esid = (struct ext_selfid *)sid; |
| 302 | |
| 303 | if (esid->porta == 0x3) cldcnt[n]++; |
| 304 | if (esid->portb == 0x3) cldcnt[n]++; |
| 305 | if (esid->portc == 0x3) cldcnt[n]++; |
| 306 | if (esid->portd == 0x3) cldcnt[n]++; |
| 307 | if (esid->porte == 0x3) cldcnt[n]++; |
| 308 | if (esid->portf == 0x3) cldcnt[n]++; |
| 309 | if (esid->portg == 0x3) cldcnt[n]++; |
| 310 | if (esid->porth == 0x3) cldcnt[n]++; |
| 311 | } else { |
| 312 | if (sid->port0 == 0x3) cldcnt[n]++; |
| 313 | if (sid->port1 == 0x3) cldcnt[n]++; |
| 314 | if (sid->port2 == 0x3) cldcnt[n]++; |
| 315 | |
| 316 | speedcap[n] = sid->speed; |
| 317 | n--; |
| 318 | } |
| 319 | } |
| 320 | |
| 321 | /* set self mapping */ |
| 322 | for (i = 0; i < nodecount; i++) { |
| 323 | map[64*i + i] = speedcap[i]; |
| 324 | } |
| 325 | |
| 326 | /* fix up direct children count to total children count; |
| 327 | * also fix up speedcaps for sibling and parent communication */ |
| 328 | for (i = 1; i < nodecount; i++) { |
| 329 | for (j = cldcnt[i], n = i - 1; j > 0; j--) { |
| 330 | cldcnt[i] += cldcnt[n]; |
| 331 | speedcap[n] = min(speedcap[n], speedcap[i]); |
| 332 | n -= cldcnt[n] + 1; |
| 333 | } |
| 334 | } |
| 335 | |
| 336 | for (n = 0; n < nodecount; n++) { |
| 337 | for (i = n - cldcnt[n]; i <= n; i++) { |
| 338 | for (j = 0; j < (n - cldcnt[n]); j++) { |
| 339 | map[j*64 + i] = map[i*64 + j] = |
| 340 | min(map[i*64 + j], speedcap[n]); |
| 341 | } |
| 342 | for (j = n + 1; j < nodecount; j++) { |
| 343 | map[j*64 + i] = map[i*64 + j] = |
| 344 | min(map[i*64 + j], speedcap[n]); |
| 345 | } |
| 346 | } |
| 347 | } |
| 348 | } |
| 349 | |
| 350 | |
| 351 | void hpsb_selfid_received(struct hpsb_host *host, quadlet_t sid) |
| 352 | { |
| 353 | if (host->in_bus_reset) { |
| 354 | HPSB_VERBOSE("Including SelfID 0x%x", sid); |
| 355 | host->topology_map[host->selfid_count++] = sid; |
| 356 | } else { |
| 357 | HPSB_NOTICE("Spurious SelfID packet (0x%08x) received from bus %d", |
| 358 | sid, NODEID_TO_BUS(host->node_id)); |
| 359 | } |
| 360 | } |
| 361 | |
| 362 | void hpsb_selfid_complete(struct hpsb_host *host, int phyid, int isroot) |
| 363 | { |
| 364 | if (!host->in_bus_reset) |
| 365 | HPSB_NOTICE("SelfID completion called outside of bus reset!"); |
| 366 | |
| 367 | host->node_id = LOCAL_BUS | phyid; |
| 368 | host->is_root = isroot; |
| 369 | |
| 370 | if (!check_selfids(host)) { |
| 371 | if (host->reset_retries++ < 20) { |
| 372 | /* selfid stage did not complete without error */ |
| 373 | HPSB_NOTICE("Error in SelfID stage, resetting"); |
| 374 | host->in_bus_reset = 0; |
| 375 | /* this should work from ohci1394 now... */ |
| 376 | hpsb_reset_bus(host, LONG_RESET); |
| 377 | return; |
| 378 | } else { |
| 379 | HPSB_NOTICE("Stopping out-of-control reset loop"); |
| 380 | HPSB_NOTICE("Warning - topology map and speed map will not be valid"); |
| 381 | host->reset_retries = 0; |
| 382 | } |
| 383 | } else { |
| 384 | host->reset_retries = 0; |
| 385 | build_speed_map(host, host->node_count); |
| 386 | } |
| 387 | |
| 388 | HPSB_VERBOSE("selfid_complete called with successful SelfID stage " |
| 389 | "... irm_id: 0x%X node_id: 0x%X",host->irm_id,host->node_id); |
| 390 | |
| 391 | /* irm_id is kept up to date by check_selfids() */ |
| 392 | if (host->irm_id == host->node_id) { |
| 393 | host->is_irm = 1; |
| 394 | } else { |
| 395 | host->is_busmgr = 0; |
| 396 | host->is_irm = 0; |
| 397 | } |
| 398 | |
| 399 | if (isroot) { |
| 400 | host->driver->devctl(host, ACT_CYCLE_MASTER, 1); |
| 401 | host->is_cycmst = 1; |
| 402 | } |
| 403 | atomic_inc(&host->generation); |
| 404 | host->in_bus_reset = 0; |
| 405 | highlevel_host_reset(host); |
| 406 | } |
| 407 | |
| 408 | |
| 409 | void hpsb_packet_sent(struct hpsb_host *host, struct hpsb_packet *packet, |
| 410 | int ackcode) |
| 411 | { |
| 412 | unsigned long flags; |
| 413 | |
| 414 | spin_lock_irqsave(&host->pending_packet_queue.lock, flags); |
| 415 | |
| 416 | packet->ack_code = ackcode; |
| 417 | |
| 418 | if (packet->no_waiter || packet->state == hpsb_complete) { |
| 419 | /* if packet->no_waiter, must not have a tlabel allocated */ |
| 420 | spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags); |
| 421 | hpsb_free_packet(packet); |
| 422 | return; |
| 423 | } |
| 424 | |
| 425 | atomic_dec(&packet->refcnt); /* drop HC's reference */ |
| 426 | /* here the packet must be on the host->pending_packet_queue */ |
| 427 | |
| 428 | if (ackcode != ACK_PENDING || !packet->expect_response) { |
| 429 | packet->state = hpsb_complete; |
| 430 | __skb_unlink(packet->skb, &host->pending_packet_queue); |
| 431 | spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags); |
| 432 | queue_packet_complete(packet); |
| 433 | return; |
| 434 | } |
| 435 | |
| 436 | packet->state = hpsb_pending; |
| 437 | packet->sendtime = jiffies; |
| 438 | |
| 439 | spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags); |
| 440 | |
| 441 | mod_timer(&host->timeout, jiffies + host->timeout_interval); |
| 442 | } |
| 443 | |
| 444 | /** |
| 445 | * hpsb_send_phy_config - transmit a PHY configuration packet on the bus |
| 446 | * @host: host that PHY config packet gets sent through |
| 447 | * @rootid: root whose force_root bit should get set (-1 = don't set force_root) |
| 448 | * @gapcnt: gap count value to set (-1 = don't set gap count) |
| 449 | * |
| 450 | * This function sends a PHY config packet on the bus through the specified host. |
| 451 | * |
| 452 | * Return value: 0 for success or error number otherwise. |
| 453 | */ |
| 454 | int hpsb_send_phy_config(struct hpsb_host *host, int rootid, int gapcnt) |
| 455 | { |
| 456 | struct hpsb_packet *packet; |
| 457 | int retval = 0; |
| 458 | |
| 459 | if (rootid >= ALL_NODES || rootid < -1 || gapcnt > 0x3f || gapcnt < -1 || |
| 460 | (rootid == -1 && gapcnt == -1)) { |
| 461 | HPSB_DEBUG("Invalid Parameter: rootid = %d gapcnt = %d", |
| 462 | rootid, gapcnt); |
| 463 | return -EINVAL; |
| 464 | } |
| 465 | |
| 466 | packet = hpsb_alloc_packet(0); |
| 467 | if (!packet) |
| 468 | return -ENOMEM; |
| 469 | |
| 470 | packet->host = host; |
| 471 | packet->header_size = 8; |
| 472 | packet->data_size = 0; |
| 473 | packet->expect_response = 0; |
| 474 | packet->no_waiter = 0; |
| 475 | packet->type = hpsb_raw; |
| 476 | packet->header[0] = 0; |
| 477 | if (rootid != -1) |
| 478 | packet->header[0] |= rootid << 24 | 1 << 23; |
| 479 | if (gapcnt != -1) |
| 480 | packet->header[0] |= gapcnt << 16 | 1 << 22; |
| 481 | |
| 482 | packet->header[1] = ~packet->header[0]; |
| 483 | |
| 484 | packet->generation = get_hpsb_generation(host); |
| 485 | |
| 486 | retval = hpsb_send_packet_and_wait(packet); |
| 487 | hpsb_free_packet(packet); |
| 488 | |
| 489 | return retval; |
| 490 | } |
| 491 | |
| 492 | /** |
| 493 | * hpsb_send_packet - transmit a packet on the bus |
| 494 | * @packet: packet to send |
| 495 | * |
| 496 | * The packet is sent through the host specified in the packet->host field. |
| 497 | * Before sending, the packet's transmit speed is automatically determined |
| 498 | * using the local speed map when it is an async, non-broadcast packet. |
| 499 | * |
| 500 | * Possibilities for failure are that host is either not initialized, in bus |
| 501 | * reset, the packet's generation number doesn't match the current generation |
| 502 | * number or the host reports a transmit error. |
| 503 | * |
| 504 | * Return value: 0 on success, negative errno on failure. |
| 505 | */ |
| 506 | int hpsb_send_packet(struct hpsb_packet *packet) |
| 507 | { |
| 508 | struct hpsb_host *host = packet->host; |
| 509 | |
| 510 | if (host->is_shutdown) |
| 511 | return -EINVAL; |
| 512 | if (host->in_bus_reset || |
| 513 | (packet->generation != get_hpsb_generation(host))) |
| 514 | return -EAGAIN; |
| 515 | |
| 516 | packet->state = hpsb_queued; |
| 517 | |
| 518 | /* This just seems silly to me */ |
| 519 | WARN_ON(packet->no_waiter && packet->expect_response); |
| 520 | |
| 521 | if (!packet->no_waiter || packet->expect_response) { |
| 522 | atomic_inc(&packet->refcnt); |
Jody McIntyre | 6262d06 | 2005-05-16 21:54:05 -0700 | [diff] [blame] | 523 | packet->sendtime = jiffies + 10 * HZ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | skb_queue_tail(&host->pending_packet_queue, packet->skb); |
| 525 | } |
| 526 | |
| 527 | if (packet->node_id == host->node_id) { |
| 528 | /* it is a local request, so handle it locally */ |
| 529 | |
| 530 | quadlet_t *data; |
| 531 | size_t size = packet->data_size + packet->header_size; |
| 532 | |
| 533 | data = kmalloc(size, GFP_ATOMIC); |
| 534 | if (!data) { |
| 535 | HPSB_ERR("unable to allocate memory for concatenating header and data"); |
| 536 | return -ENOMEM; |
| 537 | } |
| 538 | |
| 539 | memcpy(data, packet->header, packet->header_size); |
| 540 | |
| 541 | if (packet->data_size) |
| 542 | memcpy(((u8*)data) + packet->header_size, packet->data, packet->data_size); |
| 543 | |
| 544 | dump_packet("send packet local:", packet->header, |
| 545 | packet->header_size); |
| 546 | |
| 547 | hpsb_packet_sent(host, packet, packet->expect_response ? ACK_PENDING : ACK_COMPLETE); |
| 548 | hpsb_packet_received(host, data, size, 0); |
| 549 | |
| 550 | kfree(data); |
| 551 | |
| 552 | return 0; |
| 553 | } |
| 554 | |
| 555 | if (packet->type == hpsb_async && packet->node_id != ALL_NODES) { |
| 556 | packet->speed_code = |
| 557 | host->speed_map[NODEID_TO_NODE(host->node_id) * 64 |
| 558 | + NODEID_TO_NODE(packet->node_id)]; |
| 559 | } |
| 560 | |
| 561 | #ifdef CONFIG_IEEE1394_VERBOSEDEBUG |
| 562 | switch (packet->speed_code) { |
| 563 | case 2: |
| 564 | dump_packet("send packet 400:", packet->header, |
| 565 | packet->header_size); |
| 566 | break; |
| 567 | case 1: |
| 568 | dump_packet("send packet 200:", packet->header, |
| 569 | packet->header_size); |
| 570 | break; |
| 571 | default: |
| 572 | dump_packet("send packet 100:", packet->header, |
| 573 | packet->header_size); |
| 574 | } |
| 575 | #endif |
| 576 | |
| 577 | return host->driver->transmit_packet(host, packet); |
| 578 | } |
| 579 | |
| 580 | /* We could just use complete() directly as the packet complete |
| 581 | * callback, but this is more typesafe, in the sense that we get a |
| 582 | * compiler error if the prototype for complete() changes. */ |
| 583 | |
| 584 | static void complete_packet(void *data) |
| 585 | { |
| 586 | complete((struct completion *) data); |
| 587 | } |
| 588 | |
| 589 | int hpsb_send_packet_and_wait(struct hpsb_packet *packet) |
| 590 | { |
| 591 | struct completion done; |
| 592 | int retval; |
| 593 | |
| 594 | init_completion(&done); |
| 595 | hpsb_set_packet_complete_task(packet, complete_packet, &done); |
| 596 | retval = hpsb_send_packet(packet); |
| 597 | if (retval == 0) |
| 598 | wait_for_completion(&done); |
| 599 | |
| 600 | return retval; |
| 601 | } |
| 602 | |
| 603 | static void send_packet_nocare(struct hpsb_packet *packet) |
| 604 | { |
| 605 | if (hpsb_send_packet(packet) < 0) { |
| 606 | hpsb_free_packet(packet); |
| 607 | } |
| 608 | } |
| 609 | |
| 610 | |
| 611 | static void handle_packet_response(struct hpsb_host *host, int tcode, |
| 612 | quadlet_t *data, size_t size) |
| 613 | { |
| 614 | struct hpsb_packet *packet = NULL; |
| 615 | struct sk_buff *skb; |
| 616 | int tcode_match = 0; |
| 617 | int tlabel; |
| 618 | unsigned long flags; |
| 619 | |
| 620 | tlabel = (data[0] >> 10) & 0x3f; |
| 621 | |
| 622 | spin_lock_irqsave(&host->pending_packet_queue.lock, flags); |
| 623 | |
| 624 | skb_queue_walk(&host->pending_packet_queue, skb) { |
| 625 | packet = (struct hpsb_packet *)skb->data; |
| 626 | if ((packet->tlabel == tlabel) |
| 627 | && (packet->node_id == (data[1] >> 16))){ |
| 628 | break; |
| 629 | } |
| 630 | |
| 631 | packet = NULL; |
| 632 | } |
| 633 | |
| 634 | if (packet == NULL) { |
| 635 | HPSB_DEBUG("unsolicited response packet received - no tlabel match"); |
| 636 | dump_packet("contents:", data, 16); |
| 637 | spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags); |
| 638 | return; |
| 639 | } |
| 640 | |
| 641 | switch (packet->tcode) { |
| 642 | case TCODE_WRITEQ: |
| 643 | case TCODE_WRITEB: |
| 644 | if (tcode != TCODE_WRITE_RESPONSE) |
| 645 | break; |
| 646 | tcode_match = 1; |
| 647 | memcpy(packet->header, data, 12); |
| 648 | break; |
| 649 | case TCODE_READQ: |
| 650 | if (tcode != TCODE_READQ_RESPONSE) |
| 651 | break; |
| 652 | tcode_match = 1; |
| 653 | memcpy(packet->header, data, 16); |
| 654 | break; |
| 655 | case TCODE_READB: |
| 656 | if (tcode != TCODE_READB_RESPONSE) |
| 657 | break; |
| 658 | tcode_match = 1; |
| 659 | BUG_ON(packet->skb->len - sizeof(*packet) < size - 16); |
| 660 | memcpy(packet->header, data, 16); |
| 661 | memcpy(packet->data, data + 4, size - 16); |
| 662 | break; |
| 663 | case TCODE_LOCK_REQUEST: |
| 664 | if (tcode != TCODE_LOCK_RESPONSE) |
| 665 | break; |
| 666 | tcode_match = 1; |
| 667 | size = min((size - 16), (size_t)8); |
| 668 | BUG_ON(packet->skb->len - sizeof(*packet) < size); |
| 669 | memcpy(packet->header, data, 16); |
| 670 | memcpy(packet->data, data + 4, size); |
| 671 | break; |
| 672 | } |
| 673 | |
| 674 | if (!tcode_match) { |
| 675 | spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags); |
| 676 | HPSB_INFO("unsolicited response packet received - tcode mismatch"); |
| 677 | dump_packet("contents:", data, 16); |
| 678 | return; |
| 679 | } |
| 680 | |
| 681 | __skb_unlink(skb, skb->list); |
| 682 | |
| 683 | if (packet->state == hpsb_queued) { |
| 684 | packet->sendtime = jiffies; |
| 685 | packet->ack_code = ACK_PENDING; |
| 686 | } |
| 687 | |
| 688 | packet->state = hpsb_complete; |
| 689 | spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags); |
| 690 | |
| 691 | queue_packet_complete(packet); |
| 692 | } |
| 693 | |
| 694 | |
| 695 | static struct hpsb_packet *create_reply_packet(struct hpsb_host *host, |
| 696 | quadlet_t *data, size_t dsize) |
| 697 | { |
| 698 | struct hpsb_packet *p; |
| 699 | |
| 700 | p = hpsb_alloc_packet(dsize); |
| 701 | if (unlikely(p == NULL)) { |
| 702 | /* FIXME - send data_error response */ |
| 703 | return NULL; |
| 704 | } |
| 705 | |
| 706 | p->type = hpsb_async; |
| 707 | p->state = hpsb_unused; |
| 708 | p->host = host; |
| 709 | p->node_id = data[1] >> 16; |
| 710 | p->tlabel = (data[0] >> 10) & 0x3f; |
| 711 | p->no_waiter = 1; |
| 712 | |
| 713 | p->generation = get_hpsb_generation(host); |
| 714 | |
| 715 | if (dsize % 4) |
| 716 | p->data[dsize / 4] = 0; |
| 717 | |
| 718 | return p; |
| 719 | } |
| 720 | |
| 721 | #define PREP_ASYNC_HEAD_RCODE(tc) \ |
| 722 | packet->tcode = tc; \ |
| 723 | packet->header[0] = (packet->node_id << 16) | (packet->tlabel << 10) \ |
| 724 | | (1 << 8) | (tc << 4); \ |
| 725 | packet->header[1] = (packet->host->node_id << 16) | (rcode << 12); \ |
| 726 | packet->header[2] = 0 |
| 727 | |
| 728 | static void fill_async_readquad_resp(struct hpsb_packet *packet, int rcode, |
| 729 | quadlet_t data) |
| 730 | { |
| 731 | PREP_ASYNC_HEAD_RCODE(TCODE_READQ_RESPONSE); |
| 732 | packet->header[3] = data; |
| 733 | packet->header_size = 16; |
| 734 | packet->data_size = 0; |
| 735 | } |
| 736 | |
| 737 | static void fill_async_readblock_resp(struct hpsb_packet *packet, int rcode, |
| 738 | int length) |
| 739 | { |
| 740 | if (rcode != RCODE_COMPLETE) |
| 741 | length = 0; |
| 742 | |
| 743 | PREP_ASYNC_HEAD_RCODE(TCODE_READB_RESPONSE); |
| 744 | packet->header[3] = length << 16; |
| 745 | packet->header_size = 16; |
| 746 | packet->data_size = length + (length % 4 ? 4 - (length % 4) : 0); |
| 747 | } |
| 748 | |
| 749 | static void fill_async_write_resp(struct hpsb_packet *packet, int rcode) |
| 750 | { |
| 751 | PREP_ASYNC_HEAD_RCODE(TCODE_WRITE_RESPONSE); |
| 752 | packet->header[2] = 0; |
| 753 | packet->header_size = 12; |
| 754 | packet->data_size = 0; |
| 755 | } |
| 756 | |
| 757 | static void fill_async_lock_resp(struct hpsb_packet *packet, int rcode, int extcode, |
| 758 | int length) |
| 759 | { |
| 760 | if (rcode != RCODE_COMPLETE) |
| 761 | length = 0; |
| 762 | |
| 763 | PREP_ASYNC_HEAD_RCODE(TCODE_LOCK_RESPONSE); |
| 764 | packet->header[3] = (length << 16) | extcode; |
| 765 | packet->header_size = 16; |
| 766 | packet->data_size = length; |
| 767 | } |
| 768 | |
| 769 | #define PREP_REPLY_PACKET(length) \ |
| 770 | packet = create_reply_packet(host, data, length); \ |
| 771 | if (packet == NULL) break |
| 772 | |
| 773 | static void handle_incoming_packet(struct hpsb_host *host, int tcode, |
| 774 | quadlet_t *data, size_t size, int write_acked) |
| 775 | { |
| 776 | struct hpsb_packet *packet; |
| 777 | int length, rcode, extcode; |
| 778 | quadlet_t buffer; |
| 779 | nodeid_t source = data[1] >> 16; |
| 780 | nodeid_t dest = data[0] >> 16; |
| 781 | u16 flags = (u16) data[0]; |
| 782 | u64 addr; |
| 783 | |
| 784 | /* big FIXME - no error checking is done for an out of bounds length */ |
| 785 | |
| 786 | switch (tcode) { |
| 787 | case TCODE_WRITEQ: |
| 788 | addr = (((u64)(data[1] & 0xffff)) << 32) | data[2]; |
| 789 | rcode = highlevel_write(host, source, dest, data+3, |
| 790 | addr, 4, flags); |
| 791 | |
| 792 | if (!write_acked |
| 793 | && (NODEID_TO_NODE(data[0] >> 16) != NODE_MASK) |
| 794 | && (rcode >= 0)) { |
| 795 | /* not a broadcast write, reply */ |
| 796 | PREP_REPLY_PACKET(0); |
| 797 | fill_async_write_resp(packet, rcode); |
| 798 | send_packet_nocare(packet); |
| 799 | } |
| 800 | break; |
| 801 | |
| 802 | case TCODE_WRITEB: |
| 803 | addr = (((u64)(data[1] & 0xffff)) << 32) | data[2]; |
| 804 | rcode = highlevel_write(host, source, dest, data+4, |
| 805 | addr, data[3]>>16, flags); |
| 806 | |
| 807 | if (!write_acked |
| 808 | && (NODEID_TO_NODE(data[0] >> 16) != NODE_MASK) |
| 809 | && (rcode >= 0)) { |
| 810 | /* not a broadcast write, reply */ |
| 811 | PREP_REPLY_PACKET(0); |
| 812 | fill_async_write_resp(packet, rcode); |
| 813 | send_packet_nocare(packet); |
| 814 | } |
| 815 | break; |
| 816 | |
| 817 | case TCODE_READQ: |
| 818 | addr = (((u64)(data[1] & 0xffff)) << 32) | data[2]; |
| 819 | rcode = highlevel_read(host, source, &buffer, addr, 4, flags); |
| 820 | |
| 821 | if (rcode >= 0) { |
| 822 | PREP_REPLY_PACKET(0); |
| 823 | fill_async_readquad_resp(packet, rcode, buffer); |
| 824 | send_packet_nocare(packet); |
| 825 | } |
| 826 | break; |
| 827 | |
| 828 | case TCODE_READB: |
| 829 | length = data[3] >> 16; |
| 830 | PREP_REPLY_PACKET(length); |
| 831 | |
| 832 | addr = (((u64)(data[1] & 0xffff)) << 32) | data[2]; |
| 833 | rcode = highlevel_read(host, source, packet->data, addr, |
| 834 | length, flags); |
| 835 | |
| 836 | if (rcode >= 0) { |
| 837 | fill_async_readblock_resp(packet, rcode, length); |
| 838 | send_packet_nocare(packet); |
| 839 | } else { |
| 840 | hpsb_free_packet(packet); |
| 841 | } |
| 842 | break; |
| 843 | |
| 844 | case TCODE_LOCK_REQUEST: |
| 845 | length = data[3] >> 16; |
| 846 | extcode = data[3] & 0xffff; |
| 847 | addr = (((u64)(data[1] & 0xffff)) << 32) | data[2]; |
| 848 | |
| 849 | PREP_REPLY_PACKET(8); |
| 850 | |
| 851 | if ((extcode == 0) || (extcode >= 7)) { |
| 852 | /* let switch default handle error */ |
| 853 | length = 0; |
| 854 | } |
| 855 | |
| 856 | switch (length) { |
| 857 | case 4: |
| 858 | rcode = highlevel_lock(host, source, packet->data, addr, |
| 859 | data[4], 0, extcode,flags); |
| 860 | fill_async_lock_resp(packet, rcode, extcode, 4); |
| 861 | break; |
| 862 | case 8: |
| 863 | if ((extcode != EXTCODE_FETCH_ADD) |
| 864 | && (extcode != EXTCODE_LITTLE_ADD)) { |
| 865 | rcode = highlevel_lock(host, source, |
| 866 | packet->data, addr, |
| 867 | data[5], data[4], |
| 868 | extcode, flags); |
| 869 | fill_async_lock_resp(packet, rcode, extcode, 4); |
| 870 | } else { |
| 871 | rcode = highlevel_lock64(host, source, |
| 872 | (octlet_t *)packet->data, addr, |
| 873 | *(octlet_t *)(data + 4), 0ULL, |
| 874 | extcode, flags); |
| 875 | fill_async_lock_resp(packet, rcode, extcode, 8); |
| 876 | } |
| 877 | break; |
| 878 | case 16: |
| 879 | rcode = highlevel_lock64(host, source, |
| 880 | (octlet_t *)packet->data, addr, |
| 881 | *(octlet_t *)(data + 6), |
| 882 | *(octlet_t *)(data + 4), |
| 883 | extcode, flags); |
| 884 | fill_async_lock_resp(packet, rcode, extcode, 8); |
| 885 | break; |
| 886 | default: |
| 887 | rcode = RCODE_TYPE_ERROR; |
| 888 | fill_async_lock_resp(packet, rcode, |
| 889 | extcode, 0); |
| 890 | } |
| 891 | |
| 892 | if (rcode >= 0) { |
| 893 | send_packet_nocare(packet); |
| 894 | } else { |
| 895 | hpsb_free_packet(packet); |
| 896 | } |
| 897 | break; |
| 898 | } |
| 899 | |
| 900 | } |
| 901 | #undef PREP_REPLY_PACKET |
| 902 | |
| 903 | |
| 904 | void hpsb_packet_received(struct hpsb_host *host, quadlet_t *data, size_t size, |
| 905 | int write_acked) |
| 906 | { |
| 907 | int tcode; |
| 908 | |
| 909 | if (host->in_bus_reset) { |
| 910 | HPSB_INFO("received packet during reset; ignoring"); |
| 911 | return; |
| 912 | } |
| 913 | |
| 914 | dump_packet("received packet:", data, size); |
| 915 | |
| 916 | tcode = (data[0] >> 4) & 0xf; |
| 917 | |
| 918 | switch (tcode) { |
| 919 | case TCODE_WRITE_RESPONSE: |
| 920 | case TCODE_READQ_RESPONSE: |
| 921 | case TCODE_READB_RESPONSE: |
| 922 | case TCODE_LOCK_RESPONSE: |
| 923 | handle_packet_response(host, tcode, data, size); |
| 924 | break; |
| 925 | |
| 926 | case TCODE_WRITEQ: |
| 927 | case TCODE_WRITEB: |
| 928 | case TCODE_READQ: |
| 929 | case TCODE_READB: |
| 930 | case TCODE_LOCK_REQUEST: |
| 931 | handle_incoming_packet(host, tcode, data, size, write_acked); |
| 932 | break; |
| 933 | |
| 934 | |
| 935 | case TCODE_ISO_DATA: |
| 936 | highlevel_iso_receive(host, data, size); |
| 937 | break; |
| 938 | |
| 939 | case TCODE_CYCLE_START: |
| 940 | /* simply ignore this packet if it is passed on */ |
| 941 | break; |
| 942 | |
| 943 | default: |
| 944 | HPSB_NOTICE("received packet with bogus transaction code %d", |
| 945 | tcode); |
| 946 | break; |
| 947 | } |
| 948 | } |
| 949 | |
| 950 | |
| 951 | static void abort_requests(struct hpsb_host *host) |
| 952 | { |
| 953 | struct hpsb_packet *packet; |
| 954 | struct sk_buff *skb; |
| 955 | |
| 956 | host->driver->devctl(host, CANCEL_REQUESTS, 0); |
| 957 | |
| 958 | while ((skb = skb_dequeue(&host->pending_packet_queue)) != NULL) { |
| 959 | packet = (struct hpsb_packet *)skb->data; |
| 960 | |
| 961 | packet->state = hpsb_complete; |
| 962 | packet->ack_code = ACKX_ABORTED; |
| 963 | queue_packet_complete(packet); |
| 964 | } |
| 965 | } |
| 966 | |
| 967 | void abort_timedouts(unsigned long __opaque) |
| 968 | { |
| 969 | struct hpsb_host *host = (struct hpsb_host *)__opaque; |
| 970 | unsigned long flags; |
| 971 | struct hpsb_packet *packet; |
| 972 | struct sk_buff *skb; |
| 973 | unsigned long expire; |
| 974 | |
| 975 | spin_lock_irqsave(&host->csr.lock, flags); |
| 976 | expire = host->csr.expire; |
| 977 | spin_unlock_irqrestore(&host->csr.lock, flags); |
| 978 | |
| 979 | /* Hold the lock around this, since we aren't dequeuing all |
| 980 | * packets, just ones we need. */ |
| 981 | spin_lock_irqsave(&host->pending_packet_queue.lock, flags); |
| 982 | |
| 983 | while (!skb_queue_empty(&host->pending_packet_queue)) { |
| 984 | skb = skb_peek(&host->pending_packet_queue); |
| 985 | |
| 986 | packet = (struct hpsb_packet *)skb->data; |
| 987 | |
| 988 | if (time_before(packet->sendtime + expire, jiffies)) { |
| 989 | __skb_unlink(skb, skb->list); |
| 990 | packet->state = hpsb_complete; |
| 991 | packet->ack_code = ACKX_TIMEOUT; |
| 992 | queue_packet_complete(packet); |
| 993 | } else { |
| 994 | /* Since packets are added to the tail, the oldest |
| 995 | * ones are first, always. When we get to one that |
| 996 | * isn't timed out, the rest aren't either. */ |
| 997 | break; |
| 998 | } |
| 999 | } |
| 1000 | |
| 1001 | if (!skb_queue_empty(&host->pending_packet_queue)) |
| 1002 | mod_timer(&host->timeout, jiffies + host->timeout_interval); |
| 1003 | |
| 1004 | spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags); |
| 1005 | } |
| 1006 | |
| 1007 | |
| 1008 | /* Kernel thread and vars, which handles packets that are completed. Only |
| 1009 | * packets that have a "complete" function are sent here. This way, the |
| 1010 | * completion is run out of kernel context, and doesn't block the rest of |
| 1011 | * the stack. */ |
| 1012 | static int khpsbpkt_pid = -1, khpsbpkt_kill; |
| 1013 | static DECLARE_COMPLETION(khpsbpkt_complete); |
| 1014 | static struct sk_buff_head hpsbpkt_queue; |
| 1015 | static DECLARE_MUTEX_LOCKED(khpsbpkt_sig); |
| 1016 | |
| 1017 | |
| 1018 | static void queue_packet_complete(struct hpsb_packet *packet) |
| 1019 | { |
| 1020 | if (packet->no_waiter) { |
| 1021 | hpsb_free_packet(packet); |
| 1022 | return; |
| 1023 | } |
| 1024 | if (packet->complete_routine != NULL) { |
| 1025 | skb_queue_tail(&hpsbpkt_queue, packet->skb); |
| 1026 | |
| 1027 | /* Signal the kernel thread to handle this */ |
| 1028 | up(&khpsbpkt_sig); |
| 1029 | } |
| 1030 | return; |
| 1031 | } |
| 1032 | |
| 1033 | static int hpsbpkt_thread(void *__hi) |
| 1034 | { |
| 1035 | struct sk_buff *skb; |
| 1036 | struct hpsb_packet *packet; |
| 1037 | void (*complete_routine)(void*); |
| 1038 | void *complete_data; |
| 1039 | |
| 1040 | daemonize("khpsbpkt"); |
| 1041 | |
| 1042 | while (1) { |
| 1043 | if (down_interruptible(&khpsbpkt_sig)) { |
| 1044 | if (current->flags & PF_FREEZE) { |
| 1045 | refrigerator(0); |
| 1046 | continue; |
| 1047 | } |
| 1048 | printk("khpsbpkt: received unexpected signal?!\n" ); |
| 1049 | break; |
| 1050 | } |
| 1051 | |
| 1052 | if (khpsbpkt_kill) |
| 1053 | break; |
| 1054 | |
| 1055 | while ((skb = skb_dequeue(&hpsbpkt_queue)) != NULL) { |
| 1056 | packet = (struct hpsb_packet *)skb->data; |
| 1057 | |
| 1058 | complete_routine = packet->complete_routine; |
| 1059 | complete_data = packet->complete_data; |
| 1060 | |
| 1061 | packet->complete_routine = packet->complete_data = NULL; |
| 1062 | |
| 1063 | complete_routine(complete_data); |
| 1064 | } |
| 1065 | } |
| 1066 | |
| 1067 | complete_and_exit(&khpsbpkt_complete, 0); |
| 1068 | } |
| 1069 | |
| 1070 | static int __init ieee1394_init(void) |
| 1071 | { |
| 1072 | int i, ret; |
| 1073 | |
| 1074 | skb_queue_head_init(&hpsbpkt_queue); |
| 1075 | |
| 1076 | /* non-fatal error */ |
| 1077 | if (hpsb_init_config_roms()) { |
| 1078 | HPSB_ERR("Failed to initialize some config rom entries.\n"); |
| 1079 | HPSB_ERR("Some features may not be available\n"); |
| 1080 | } |
| 1081 | |
| 1082 | khpsbpkt_pid = kernel_thread(hpsbpkt_thread, NULL, CLONE_KERNEL); |
| 1083 | if (khpsbpkt_pid < 0) { |
| 1084 | HPSB_ERR("Failed to start hpsbpkt thread!\n"); |
| 1085 | ret = -ENOMEM; |
| 1086 | goto exit_cleanup_config_roms; |
| 1087 | } |
| 1088 | |
| 1089 | if (register_chrdev_region(IEEE1394_CORE_DEV, 256, "ieee1394")) { |
| 1090 | HPSB_ERR("unable to register character device major %d!\n", IEEE1394_MAJOR); |
| 1091 | ret = -ENODEV; |
| 1092 | goto exit_release_kernel_thread; |
| 1093 | } |
| 1094 | |
| 1095 | /* actually this is a non-fatal error */ |
| 1096 | ret = devfs_mk_dir("ieee1394"); |
| 1097 | if (ret < 0) { |
| 1098 | HPSB_ERR("unable to make devfs dir for device major %d!\n", IEEE1394_MAJOR); |
| 1099 | goto release_chrdev; |
| 1100 | } |
| 1101 | |
| 1102 | ret = bus_register(&ieee1394_bus_type); |
| 1103 | if (ret < 0) { |
| 1104 | HPSB_INFO("bus register failed"); |
| 1105 | goto release_devfs; |
| 1106 | } |
| 1107 | |
| 1108 | for (i = 0; fw_bus_attrs[i]; i++) { |
| 1109 | ret = bus_create_file(&ieee1394_bus_type, fw_bus_attrs[i]); |
| 1110 | if (ret < 0) { |
| 1111 | while (i >= 0) { |
| 1112 | bus_remove_file(&ieee1394_bus_type, |
| 1113 | fw_bus_attrs[i--]); |
| 1114 | } |
| 1115 | bus_unregister(&ieee1394_bus_type); |
| 1116 | goto release_devfs; |
| 1117 | } |
| 1118 | } |
| 1119 | |
| 1120 | ret = class_register(&hpsb_host_class); |
| 1121 | if (ret < 0) |
| 1122 | goto release_all_bus; |
| 1123 | |
gregkh@suse.de | 7e25ab9 | 2005-03-23 09:53:36 -0800 | [diff] [blame^] | 1124 | hpsb_protocol_class = class_create(THIS_MODULE, "ieee1394_protocol"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | if (IS_ERR(hpsb_protocol_class)) { |
| 1126 | ret = PTR_ERR(hpsb_protocol_class); |
| 1127 | goto release_class_host; |
| 1128 | } |
| 1129 | |
| 1130 | ret = init_csr(); |
| 1131 | if (ret) { |
| 1132 | HPSB_INFO("init csr failed"); |
| 1133 | ret = -ENOMEM; |
| 1134 | goto release_class_protocol; |
| 1135 | } |
| 1136 | |
| 1137 | if (disable_nodemgr) { |
| 1138 | HPSB_INFO("nodemgr and IRM functionality disabled"); |
| 1139 | /* We shouldn't contend for IRM with nodemgr disabled, since |
| 1140 | nodemgr implements functionality required of ieee1394a-2000 |
| 1141 | IRMs */ |
| 1142 | hpsb_disable_irm = 1; |
| 1143 | |
| 1144 | return 0; |
| 1145 | } |
| 1146 | |
| 1147 | if (hpsb_disable_irm) { |
| 1148 | HPSB_INFO("IRM functionality disabled"); |
| 1149 | } |
| 1150 | |
| 1151 | ret = init_ieee1394_nodemgr(); |
| 1152 | if (ret < 0) { |
| 1153 | HPSB_INFO("init nodemgr failed"); |
| 1154 | goto cleanup_csr; |
| 1155 | } |
| 1156 | |
| 1157 | return 0; |
| 1158 | |
| 1159 | cleanup_csr: |
| 1160 | cleanup_csr(); |
| 1161 | release_class_protocol: |
gregkh@suse.de | 7e25ab9 | 2005-03-23 09:53:36 -0800 | [diff] [blame^] | 1162 | class_destroy(hpsb_protocol_class); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1163 | release_class_host: |
| 1164 | class_unregister(&hpsb_host_class); |
| 1165 | release_all_bus: |
| 1166 | for (i = 0; fw_bus_attrs[i]; i++) |
| 1167 | bus_remove_file(&ieee1394_bus_type, fw_bus_attrs[i]); |
| 1168 | bus_unregister(&ieee1394_bus_type); |
| 1169 | release_devfs: |
| 1170 | devfs_remove("ieee1394"); |
| 1171 | release_chrdev: |
| 1172 | unregister_chrdev_region(IEEE1394_CORE_DEV, 256); |
| 1173 | exit_release_kernel_thread: |
| 1174 | if (khpsbpkt_pid >= 0) { |
| 1175 | kill_proc(khpsbpkt_pid, SIGTERM, 1); |
| 1176 | wait_for_completion(&khpsbpkt_complete); |
| 1177 | } |
| 1178 | exit_cleanup_config_roms: |
| 1179 | hpsb_cleanup_config_roms(); |
| 1180 | return ret; |
| 1181 | } |
| 1182 | |
| 1183 | static void __exit ieee1394_cleanup(void) |
| 1184 | { |
| 1185 | int i; |
| 1186 | |
| 1187 | if (!disable_nodemgr) |
| 1188 | cleanup_ieee1394_nodemgr(); |
| 1189 | |
| 1190 | cleanup_csr(); |
| 1191 | |
gregkh@suse.de | 7e25ab9 | 2005-03-23 09:53:36 -0800 | [diff] [blame^] | 1192 | class_destroy(hpsb_protocol_class); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1193 | class_unregister(&hpsb_host_class); |
| 1194 | for (i = 0; fw_bus_attrs[i]; i++) |
| 1195 | bus_remove_file(&ieee1394_bus_type, fw_bus_attrs[i]); |
| 1196 | bus_unregister(&ieee1394_bus_type); |
| 1197 | |
| 1198 | if (khpsbpkt_pid >= 0) { |
| 1199 | khpsbpkt_kill = 1; |
| 1200 | mb(); |
| 1201 | up(&khpsbpkt_sig); |
| 1202 | wait_for_completion(&khpsbpkt_complete); |
| 1203 | } |
| 1204 | |
| 1205 | hpsb_cleanup_config_roms(); |
| 1206 | |
| 1207 | unregister_chrdev_region(IEEE1394_CORE_DEV, 256); |
| 1208 | devfs_remove("ieee1394"); |
| 1209 | } |
| 1210 | |
| 1211 | module_init(ieee1394_init); |
| 1212 | module_exit(ieee1394_cleanup); |
| 1213 | |
| 1214 | /* Exported symbols */ |
| 1215 | |
| 1216 | /** hosts.c **/ |
| 1217 | EXPORT_SYMBOL(hpsb_alloc_host); |
| 1218 | EXPORT_SYMBOL(hpsb_add_host); |
| 1219 | EXPORT_SYMBOL(hpsb_remove_host); |
| 1220 | EXPORT_SYMBOL(hpsb_update_config_rom_image); |
| 1221 | |
| 1222 | /** ieee1394_core.c **/ |
| 1223 | EXPORT_SYMBOL(hpsb_speedto_str); |
| 1224 | EXPORT_SYMBOL(hpsb_protocol_class); |
| 1225 | EXPORT_SYMBOL(hpsb_set_packet_complete_task); |
| 1226 | EXPORT_SYMBOL(hpsb_alloc_packet); |
| 1227 | EXPORT_SYMBOL(hpsb_free_packet); |
| 1228 | EXPORT_SYMBOL(hpsb_send_phy_config); |
| 1229 | EXPORT_SYMBOL(hpsb_send_packet); |
| 1230 | EXPORT_SYMBOL(hpsb_send_packet_and_wait); |
| 1231 | EXPORT_SYMBOL(hpsb_reset_bus); |
| 1232 | EXPORT_SYMBOL(hpsb_bus_reset); |
| 1233 | EXPORT_SYMBOL(hpsb_selfid_received); |
| 1234 | EXPORT_SYMBOL(hpsb_selfid_complete); |
| 1235 | EXPORT_SYMBOL(hpsb_packet_sent); |
| 1236 | EXPORT_SYMBOL(hpsb_packet_received); |
| 1237 | EXPORT_SYMBOL_GPL(hpsb_disable_irm); |
| 1238 | |
| 1239 | /** ieee1394_transactions.c **/ |
| 1240 | EXPORT_SYMBOL(hpsb_get_tlabel); |
| 1241 | EXPORT_SYMBOL(hpsb_free_tlabel); |
| 1242 | EXPORT_SYMBOL(hpsb_make_readpacket); |
| 1243 | EXPORT_SYMBOL(hpsb_make_writepacket); |
| 1244 | EXPORT_SYMBOL(hpsb_make_streampacket); |
| 1245 | EXPORT_SYMBOL(hpsb_make_lockpacket); |
| 1246 | EXPORT_SYMBOL(hpsb_make_lock64packet); |
| 1247 | EXPORT_SYMBOL(hpsb_make_phypacket); |
| 1248 | EXPORT_SYMBOL(hpsb_make_isopacket); |
| 1249 | EXPORT_SYMBOL(hpsb_read); |
| 1250 | EXPORT_SYMBOL(hpsb_write); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1251 | EXPORT_SYMBOL(hpsb_packet_success); |
| 1252 | |
| 1253 | /** highlevel.c **/ |
| 1254 | EXPORT_SYMBOL(hpsb_register_highlevel); |
| 1255 | EXPORT_SYMBOL(hpsb_unregister_highlevel); |
| 1256 | EXPORT_SYMBOL(hpsb_register_addrspace); |
| 1257 | EXPORT_SYMBOL(hpsb_unregister_addrspace); |
| 1258 | EXPORT_SYMBOL(hpsb_allocate_and_register_addrspace); |
| 1259 | EXPORT_SYMBOL(hpsb_listen_channel); |
| 1260 | EXPORT_SYMBOL(hpsb_unlisten_channel); |
| 1261 | EXPORT_SYMBOL(hpsb_get_hostinfo); |
| 1262 | EXPORT_SYMBOL(hpsb_create_hostinfo); |
| 1263 | EXPORT_SYMBOL(hpsb_destroy_hostinfo); |
| 1264 | EXPORT_SYMBOL(hpsb_set_hostinfo_key); |
| 1265 | EXPORT_SYMBOL(hpsb_get_hostinfo_bykey); |
| 1266 | EXPORT_SYMBOL(hpsb_set_hostinfo); |
| 1267 | EXPORT_SYMBOL(highlevel_add_host); |
| 1268 | EXPORT_SYMBOL(highlevel_remove_host); |
| 1269 | EXPORT_SYMBOL(highlevel_host_reset); |
| 1270 | |
| 1271 | /** nodemgr.c **/ |
| 1272 | EXPORT_SYMBOL(hpsb_node_fill_packet); |
| 1273 | EXPORT_SYMBOL(hpsb_node_write); |
| 1274 | EXPORT_SYMBOL(hpsb_register_protocol); |
| 1275 | EXPORT_SYMBOL(hpsb_unregister_protocol); |
| 1276 | EXPORT_SYMBOL(ieee1394_bus_type); |
| 1277 | EXPORT_SYMBOL(nodemgr_for_each_host); |
| 1278 | |
| 1279 | /** csr.c **/ |
| 1280 | EXPORT_SYMBOL(hpsb_update_config_rom); |
| 1281 | |
| 1282 | /** dma.c **/ |
| 1283 | EXPORT_SYMBOL(dma_prog_region_init); |
| 1284 | EXPORT_SYMBOL(dma_prog_region_alloc); |
| 1285 | EXPORT_SYMBOL(dma_prog_region_free); |
| 1286 | EXPORT_SYMBOL(dma_region_init); |
| 1287 | EXPORT_SYMBOL(dma_region_alloc); |
| 1288 | EXPORT_SYMBOL(dma_region_free); |
| 1289 | EXPORT_SYMBOL(dma_region_sync_for_cpu); |
| 1290 | EXPORT_SYMBOL(dma_region_sync_for_device); |
| 1291 | EXPORT_SYMBOL(dma_region_mmap); |
| 1292 | EXPORT_SYMBOL(dma_region_offset_to_bus); |
| 1293 | |
| 1294 | /** iso.c **/ |
| 1295 | EXPORT_SYMBOL(hpsb_iso_xmit_init); |
| 1296 | EXPORT_SYMBOL(hpsb_iso_recv_init); |
| 1297 | EXPORT_SYMBOL(hpsb_iso_xmit_start); |
| 1298 | EXPORT_SYMBOL(hpsb_iso_recv_start); |
| 1299 | EXPORT_SYMBOL(hpsb_iso_recv_listen_channel); |
| 1300 | EXPORT_SYMBOL(hpsb_iso_recv_unlisten_channel); |
| 1301 | EXPORT_SYMBOL(hpsb_iso_recv_set_channel_mask); |
| 1302 | EXPORT_SYMBOL(hpsb_iso_stop); |
| 1303 | EXPORT_SYMBOL(hpsb_iso_shutdown); |
| 1304 | EXPORT_SYMBOL(hpsb_iso_xmit_queue_packet); |
| 1305 | EXPORT_SYMBOL(hpsb_iso_xmit_sync); |
| 1306 | EXPORT_SYMBOL(hpsb_iso_recv_release_packets); |
| 1307 | EXPORT_SYMBOL(hpsb_iso_n_ready); |
| 1308 | EXPORT_SYMBOL(hpsb_iso_packet_sent); |
| 1309 | EXPORT_SYMBOL(hpsb_iso_packet_received); |
| 1310 | EXPORT_SYMBOL(hpsb_iso_wake); |
| 1311 | EXPORT_SYMBOL(hpsb_iso_recv_flush); |
| 1312 | |
| 1313 | /** csr1212.c **/ |
| 1314 | EXPORT_SYMBOL(csr1212_create_csr); |
| 1315 | EXPORT_SYMBOL(csr1212_init_local_csr); |
| 1316 | EXPORT_SYMBOL(csr1212_new_immediate); |
| 1317 | EXPORT_SYMBOL(csr1212_new_directory); |
| 1318 | EXPORT_SYMBOL(csr1212_associate_keyval); |
| 1319 | EXPORT_SYMBOL(csr1212_attach_keyval_to_directory); |
| 1320 | EXPORT_SYMBOL(csr1212_new_string_descriptor_leaf); |
| 1321 | EXPORT_SYMBOL(csr1212_detach_keyval_from_directory); |
| 1322 | EXPORT_SYMBOL(csr1212_release_keyval); |
| 1323 | EXPORT_SYMBOL(csr1212_destroy_csr); |
| 1324 | EXPORT_SYMBOL(csr1212_read); |
| 1325 | EXPORT_SYMBOL(csr1212_generate_csr_image); |
| 1326 | EXPORT_SYMBOL(csr1212_parse_keyval); |
| 1327 | EXPORT_SYMBOL(csr1212_parse_csr); |
| 1328 | EXPORT_SYMBOL(_csr1212_read_keyval); |
| 1329 | EXPORT_SYMBOL(_csr1212_destroy_keyval); |