Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * IEEE 1394 for Linux |
| 3 | * |
| 4 | * Raw interface to the bus |
| 5 | * |
| 6 | * Copyright (C) 1999, 2000 Andreas E. Bombe |
| 7 | * 2001, 2002 Manfred Weihs <weihs@ict.tuwien.ac.at> |
| 8 | * 2002 Christian Toegel <christian.toegel@gmx.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 | * configuration ROM manipulation |
| 18 | * address range mapping |
| 19 | * adaptation for new (transparent) loopback mechanism |
| 20 | * sending of arbitrary async packets |
| 21 | * Christian Toegel <christian.toegel@gmx.at> |
| 22 | * address range mapping |
| 23 | * lock64 request |
| 24 | * transmit physical packet |
| 25 | * busreset notification control (switch on/off) |
| 26 | * busreset with selection of type (short/long) |
| 27 | * request_reply |
| 28 | */ |
| 29 | |
| 30 | #include <linux/kernel.h> |
| 31 | #include <linux/list.h> |
| 32 | #include <linux/string.h> |
| 33 | #include <linux/slab.h> |
| 34 | #include <linux/fs.h> |
| 35 | #include <linux/poll.h> |
| 36 | #include <linux/module.h> |
| 37 | #include <linux/init.h> |
| 38 | #include <linux/smp_lock.h> |
| 39 | #include <linux/interrupt.h> |
| 40 | #include <linux/vmalloc.h> |
| 41 | #include <linux/cdev.h> |
| 42 | #include <asm/uaccess.h> |
| 43 | #include <asm/atomic.h> |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 44 | #include <linux/compat.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | |
| 46 | #include "csr1212.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | #include "highlevel.h" |
Stefan Richter | de4394f | 2006-07-03 12:02:29 -0400 | [diff] [blame] | 48 | #include "hosts.h" |
| 49 | #include "ieee1394.h" |
| 50 | #include "ieee1394_core.h" |
| 51 | #include "ieee1394_hotplug.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | #include "ieee1394_transactions.h" |
Stefan Richter | de4394f | 2006-07-03 12:02:29 -0400 | [diff] [blame] | 53 | #include "ieee1394_types.h" |
| 54 | #include "iso.h" |
| 55 | #include "nodemgr.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | #include "raw1394.h" |
| 57 | #include "raw1394-private.h" |
| 58 | |
| 59 | #define int2ptr(x) ((void __user *)(unsigned long)x) |
| 60 | #define ptr2int(x) ((u64)(unsigned long)(void __user *)x) |
| 61 | |
| 62 | #ifdef CONFIG_IEEE1394_VERBOSEDEBUG |
| 63 | #define RAW1394_DEBUG |
| 64 | #endif |
| 65 | |
| 66 | #ifdef RAW1394_DEBUG |
| 67 | #define DBGMSG(fmt, args...) \ |
| 68 | printk(KERN_INFO "raw1394:" fmt "\n" , ## args) |
| 69 | #else |
Stefan Richter | 611aa19 | 2006-08-02 18:44:00 +0200 | [diff] [blame] | 70 | #define DBGMSG(fmt, args...) do {} while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | #endif |
| 72 | |
| 73 | static LIST_HEAD(host_info_list); |
| 74 | static int host_count; |
| 75 | static DEFINE_SPINLOCK(host_info_lock); |
| 76 | static atomic_t internal_generation = ATOMIC_INIT(0); |
| 77 | |
| 78 | static atomic_t iso_buffer_size; |
| 79 | static const int iso_buffer_max = 4 * 1024 * 1024; /* 4 MB */ |
| 80 | |
| 81 | static struct hpsb_highlevel raw1394_highlevel; |
| 82 | |
| 83 | static int arm_read(struct hpsb_host *host, int nodeid, quadlet_t * buffer, |
| 84 | u64 addr, size_t length, u16 flags); |
| 85 | static int arm_write(struct hpsb_host *host, int nodeid, int destid, |
| 86 | quadlet_t * data, u64 addr, size_t length, u16 flags); |
| 87 | static int arm_lock(struct hpsb_host *host, int nodeid, quadlet_t * store, |
| 88 | u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode, |
| 89 | u16 flags); |
| 90 | static int arm_lock64(struct hpsb_host *host, int nodeid, octlet_t * store, |
| 91 | u64 addr, octlet_t data, octlet_t arg, int ext_tcode, |
| 92 | u16 flags); |
| 93 | static struct hpsb_address_ops arm_ops = { |
| 94 | .read = arm_read, |
| 95 | .write = arm_write, |
| 96 | .lock = arm_lock, |
| 97 | .lock64 = arm_lock64, |
| 98 | }; |
| 99 | |
| 100 | static void queue_complete_cb(struct pending_request *req); |
| 101 | |
Stefan Richter | 9868e0e | 2006-11-20 00:05:05 +0100 | [diff] [blame] | 102 | #include <asm/current.h> |
| 103 | static void print_old_iso_deprecation(void) |
| 104 | { |
| 105 | static pid_t p; |
| 106 | |
| 107 | if (p == current->pid) |
| 108 | return; |
| 109 | p = current->pid; |
| 110 | printk(KERN_WARNING "raw1394: WARNING - Program \"%s\" uses unsupported" |
| 111 | " isochronous request types which will be removed in a next" |
| 112 | " kernel release\n", current->comm); |
| 113 | printk(KERN_WARNING "raw1394: Update your software to use libraw1394's" |
| 114 | " newer interface\n"); |
| 115 | } |
| 116 | |
Al Viro | dd0fc66 | 2005-10-07 07:46:04 +0100 | [diff] [blame] | 117 | static struct pending_request *__alloc_pending_request(gfp_t flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | { |
| 119 | struct pending_request *req; |
| 120 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 121 | req = kzalloc(sizeof(*req), flags); |
| 122 | if (req) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | INIT_LIST_HEAD(&req->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | |
| 125 | return req; |
| 126 | } |
| 127 | |
| 128 | static inline struct pending_request *alloc_pending_request(void) |
| 129 | { |
Christoph Lameter | e94b176 | 2006-12-06 20:33:17 -0800 | [diff] [blame] | 130 | return __alloc_pending_request(GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | } |
| 132 | |
| 133 | static void free_pending_request(struct pending_request *req) |
| 134 | { |
| 135 | if (req->ibs) { |
| 136 | if (atomic_dec_and_test(&req->ibs->refcount)) { |
| 137 | atomic_sub(req->ibs->data_size, &iso_buffer_size); |
| 138 | kfree(req->ibs); |
| 139 | } |
| 140 | } else if (req->free_data) { |
| 141 | kfree(req->data); |
| 142 | } |
| 143 | hpsb_free_packet(req->packet); |
| 144 | kfree(req); |
| 145 | } |
| 146 | |
| 147 | /* fi->reqlists_lock must be taken */ |
| 148 | static void __queue_complete_req(struct pending_request *req) |
| 149 | { |
| 150 | struct file_info *fi = req->file_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | |
Stefan Richter | 45289bf | 2006-07-03 12:02:33 -0400 | [diff] [blame] | 152 | list_move_tail(&req->list, &fi->req_complete); |
| 153 | wake_up(&fi->wait_complete); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | } |
| 155 | |
| 156 | static void queue_complete_req(struct pending_request *req) |
| 157 | { |
| 158 | unsigned long flags; |
| 159 | struct file_info *fi = req->file_info; |
| 160 | |
| 161 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
| 162 | __queue_complete_req(req); |
| 163 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
| 164 | } |
| 165 | |
| 166 | static void queue_complete_cb(struct pending_request *req) |
| 167 | { |
| 168 | struct hpsb_packet *packet = req->packet; |
| 169 | int rcode = (packet->header[1] >> 12) & 0xf; |
| 170 | |
| 171 | switch (packet->ack_code) { |
| 172 | case ACKX_NONE: |
| 173 | case ACKX_SEND_ERROR: |
| 174 | req->req.error = RAW1394_ERROR_SEND_ERROR; |
| 175 | break; |
| 176 | case ACKX_ABORTED: |
| 177 | req->req.error = RAW1394_ERROR_ABORTED; |
| 178 | break; |
| 179 | case ACKX_TIMEOUT: |
| 180 | req->req.error = RAW1394_ERROR_TIMEOUT; |
| 181 | break; |
| 182 | default: |
| 183 | req->req.error = (packet->ack_code << 16) | rcode; |
| 184 | break; |
| 185 | } |
| 186 | |
| 187 | if (!((packet->ack_code == ACK_PENDING) && (rcode == RCODE_COMPLETE))) { |
| 188 | req->req.length = 0; |
| 189 | } |
| 190 | |
| 191 | if ((req->req.type == RAW1394_REQ_ASYNC_READ) || |
| 192 | (req->req.type == RAW1394_REQ_ASYNC_WRITE) || |
| 193 | (req->req.type == RAW1394_REQ_ASYNC_STREAM) || |
| 194 | (req->req.type == RAW1394_REQ_LOCK) || |
| 195 | (req->req.type == RAW1394_REQ_LOCK64)) |
| 196 | hpsb_free_tlabel(packet); |
| 197 | |
| 198 | queue_complete_req(req); |
| 199 | } |
| 200 | |
| 201 | static void add_host(struct hpsb_host *host) |
| 202 | { |
| 203 | struct host_info *hi; |
| 204 | unsigned long flags; |
| 205 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 206 | hi = kmalloc(sizeof(*hi), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 208 | if (hi) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | INIT_LIST_HEAD(&hi->list); |
| 210 | hi->host = host; |
| 211 | INIT_LIST_HEAD(&hi->file_info_list); |
| 212 | |
| 213 | spin_lock_irqsave(&host_info_lock, flags); |
| 214 | list_add_tail(&hi->list, &host_info_list); |
| 215 | host_count++; |
| 216 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 217 | } |
| 218 | |
| 219 | atomic_inc(&internal_generation); |
| 220 | } |
| 221 | |
| 222 | static struct host_info *find_host_info(struct hpsb_host *host) |
| 223 | { |
| 224 | struct host_info *hi; |
| 225 | |
| 226 | list_for_each_entry(hi, &host_info_list, list) |
| 227 | if (hi->host == host) |
| 228 | return hi; |
| 229 | |
| 230 | return NULL; |
| 231 | } |
| 232 | |
| 233 | static void remove_host(struct hpsb_host *host) |
| 234 | { |
| 235 | struct host_info *hi; |
| 236 | unsigned long flags; |
| 237 | |
| 238 | spin_lock_irqsave(&host_info_lock, flags); |
| 239 | hi = find_host_info(host); |
| 240 | |
| 241 | if (hi != NULL) { |
| 242 | list_del(&hi->list); |
| 243 | host_count--; |
| 244 | /* |
| 245 | FIXME: address ranges should be removed |
| 246 | and fileinfo states should be initialized |
| 247 | (including setting generation to |
| 248 | internal-generation ...) |
| 249 | */ |
| 250 | } |
| 251 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 252 | |
| 253 | if (hi == NULL) { |
| 254 | printk(KERN_ERR "raw1394: attempt to remove unknown host " |
| 255 | "0x%p\n", host); |
| 256 | return; |
| 257 | } |
| 258 | |
| 259 | kfree(hi); |
| 260 | |
| 261 | atomic_inc(&internal_generation); |
| 262 | } |
| 263 | |
| 264 | static void host_reset(struct hpsb_host *host) |
| 265 | { |
| 266 | unsigned long flags; |
| 267 | struct host_info *hi; |
| 268 | struct file_info *fi; |
| 269 | struct pending_request *req; |
| 270 | |
| 271 | spin_lock_irqsave(&host_info_lock, flags); |
| 272 | hi = find_host_info(host); |
| 273 | |
| 274 | if (hi != NULL) { |
| 275 | list_for_each_entry(fi, &hi->file_info_list, list) { |
| 276 | if (fi->notification == RAW1394_NOTIFY_ON) { |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 277 | req = __alloc_pending_request(GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | |
| 279 | if (req != NULL) { |
| 280 | req->file_info = fi; |
| 281 | req->req.type = RAW1394_REQ_BUS_RESET; |
| 282 | req->req.generation = |
| 283 | get_hpsb_generation(host); |
| 284 | req->req.misc = (host->node_id << 16) |
| 285 | | host->node_count; |
| 286 | if (fi->protocol_version > 3) { |
| 287 | req->req.misc |= |
| 288 | (NODEID_TO_NODE |
| 289 | (host->irm_id) |
| 290 | << 8); |
| 291 | } |
| 292 | |
| 293 | queue_complete_req(req); |
| 294 | } |
| 295 | } |
| 296 | } |
| 297 | } |
| 298 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 299 | } |
| 300 | |
| 301 | static void iso_receive(struct hpsb_host *host, int channel, quadlet_t * data, |
| 302 | size_t length) |
| 303 | { |
| 304 | unsigned long flags; |
| 305 | struct host_info *hi; |
| 306 | struct file_info *fi; |
| 307 | struct pending_request *req, *req_next; |
| 308 | struct iso_block_store *ibs = NULL; |
| 309 | LIST_HEAD(reqs); |
| 310 | |
| 311 | if ((atomic_read(&iso_buffer_size) + length) > iso_buffer_max) { |
| 312 | HPSB_INFO("dropped iso packet"); |
| 313 | return; |
| 314 | } |
| 315 | |
| 316 | spin_lock_irqsave(&host_info_lock, flags); |
| 317 | hi = find_host_info(host); |
| 318 | |
| 319 | if (hi != NULL) { |
| 320 | list_for_each_entry(fi, &hi->file_info_list, list) { |
| 321 | if (!(fi->listen_channels & (1ULL << channel))) |
| 322 | continue; |
| 323 | |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 324 | req = __alloc_pending_request(GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | if (!req) |
| 326 | break; |
| 327 | |
| 328 | if (!ibs) { |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 329 | ibs = kmalloc(sizeof(*ibs) + length, |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 330 | GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | if (!ibs) { |
| 332 | kfree(req); |
| 333 | break; |
| 334 | } |
| 335 | |
| 336 | atomic_add(length, &iso_buffer_size); |
| 337 | atomic_set(&ibs->refcount, 0); |
| 338 | ibs->data_size = length; |
| 339 | memcpy(ibs->data, data, length); |
| 340 | } |
| 341 | |
| 342 | atomic_inc(&ibs->refcount); |
| 343 | |
| 344 | req->file_info = fi; |
| 345 | req->ibs = ibs; |
| 346 | req->data = ibs->data; |
| 347 | req->req.type = RAW1394_REQ_ISO_RECEIVE; |
| 348 | req->req.generation = get_hpsb_generation(host); |
| 349 | req->req.misc = 0; |
| 350 | req->req.recvb = ptr2int(fi->iso_buffer); |
| 351 | req->req.length = min(length, fi->iso_buffer_length); |
| 352 | |
| 353 | list_add_tail(&req->list, &reqs); |
| 354 | } |
| 355 | } |
| 356 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 357 | |
| 358 | list_for_each_entry_safe(req, req_next, &reqs, list) |
| 359 | queue_complete_req(req); |
| 360 | } |
| 361 | |
| 362 | static void fcp_request(struct hpsb_host *host, int nodeid, int direction, |
| 363 | int cts, u8 * data, size_t length) |
| 364 | { |
| 365 | unsigned long flags; |
| 366 | struct host_info *hi; |
| 367 | struct file_info *fi; |
| 368 | struct pending_request *req, *req_next; |
| 369 | struct iso_block_store *ibs = NULL; |
| 370 | LIST_HEAD(reqs); |
| 371 | |
| 372 | if ((atomic_read(&iso_buffer_size) + length) > iso_buffer_max) { |
| 373 | HPSB_INFO("dropped fcp request"); |
| 374 | return; |
| 375 | } |
| 376 | |
| 377 | spin_lock_irqsave(&host_info_lock, flags); |
| 378 | hi = find_host_info(host); |
| 379 | |
| 380 | if (hi != NULL) { |
| 381 | list_for_each_entry(fi, &hi->file_info_list, list) { |
| 382 | if (!fi->fcp_buffer) |
| 383 | continue; |
| 384 | |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 385 | req = __alloc_pending_request(GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | if (!req) |
| 387 | break; |
| 388 | |
| 389 | if (!ibs) { |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 390 | ibs = kmalloc(sizeof(*ibs) + length, |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 391 | GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | if (!ibs) { |
| 393 | kfree(req); |
| 394 | break; |
| 395 | } |
| 396 | |
| 397 | atomic_add(length, &iso_buffer_size); |
| 398 | atomic_set(&ibs->refcount, 0); |
| 399 | ibs->data_size = length; |
| 400 | memcpy(ibs->data, data, length); |
| 401 | } |
| 402 | |
| 403 | atomic_inc(&ibs->refcount); |
| 404 | |
| 405 | req->file_info = fi; |
| 406 | req->ibs = ibs; |
| 407 | req->data = ibs->data; |
| 408 | req->req.type = RAW1394_REQ_FCP_REQUEST; |
| 409 | req->req.generation = get_hpsb_generation(host); |
| 410 | req->req.misc = nodeid | (direction << 16); |
| 411 | req->req.recvb = ptr2int(fi->fcp_buffer); |
| 412 | req->req.length = length; |
| 413 | |
| 414 | list_add_tail(&req->list, &reqs); |
| 415 | } |
| 416 | } |
| 417 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 418 | |
| 419 | list_for_each_entry_safe(req, req_next, &reqs, list) |
| 420 | queue_complete_req(req); |
| 421 | } |
| 422 | |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 423 | #ifdef CONFIG_COMPAT |
| 424 | struct compat_raw1394_req { |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 425 | __u32 type; |
| 426 | __s32 error; |
| 427 | __u32 misc; |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 428 | |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 429 | __u32 generation; |
| 430 | __u32 length; |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 431 | |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 432 | __u64 address; |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 433 | |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 434 | __u64 tag; |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 435 | |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 436 | __u64 sendb; |
| 437 | __u64 recvb; |
| 438 | } __attribute__((packed)); |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 439 | |
| 440 | static const char __user *raw1394_compat_write(const char __user *buf) |
| 441 | { |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 442 | struct compat_raw1394_req __user *cr = (typeof(cr)) buf; |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 443 | struct raw1394_request __user *r; |
| 444 | r = compat_alloc_user_space(sizeof(struct raw1394_request)); |
| 445 | |
| 446 | #define C(x) __copy_in_user(&r->x, &cr->x, sizeof(r->x)) |
| 447 | |
| 448 | if (copy_in_user(r, cr, sizeof(struct compat_raw1394_req)) || |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 449 | C(address) || |
| 450 | C(tag) || |
| 451 | C(sendb) || |
| 452 | C(recvb)) |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 453 | return ERR_PTR(-EFAULT); |
| 454 | return (const char __user *)r; |
| 455 | } |
| 456 | #undef C |
| 457 | |
| 458 | #define P(x) __put_user(r->x, &cr->x) |
| 459 | |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 460 | static int |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 461 | raw1394_compat_read(const char __user *buf, struct raw1394_request *r) |
| 462 | { |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 463 | struct compat_raw1394_req __user *cr = (typeof(cr)) r; |
| 464 | if (!access_ok(VERIFY_WRITE, cr, sizeof(struct compat_raw1394_req)) || |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 465 | P(type) || |
| 466 | P(error) || |
| 467 | P(misc) || |
| 468 | P(generation) || |
| 469 | P(length) || |
| 470 | P(address) || |
| 471 | P(tag) || |
| 472 | P(sendb) || |
| 473 | P(recvb)) |
| 474 | return -EFAULT; |
| 475 | return sizeof(struct compat_raw1394_req); |
| 476 | } |
| 477 | #undef P |
| 478 | |
| 479 | #endif |
| 480 | |
Stefan Richter | 45289bf | 2006-07-03 12:02:33 -0400 | [diff] [blame] | 481 | /* get next completed request (caller must hold fi->reqlists_lock) */ |
| 482 | static inline struct pending_request *__next_complete_req(struct file_info *fi) |
| 483 | { |
| 484 | struct list_head *lh; |
| 485 | struct pending_request *req = NULL; |
| 486 | |
| 487 | if (!list_empty(&fi->req_complete)) { |
| 488 | lh = fi->req_complete.next; |
| 489 | list_del(lh); |
| 490 | req = list_entry(lh, struct pending_request, list); |
| 491 | } |
| 492 | return req; |
| 493 | } |
| 494 | |
| 495 | /* atomically get next completed request */ |
| 496 | static struct pending_request *next_complete_req(struct file_info *fi) |
| 497 | { |
| 498 | unsigned long flags; |
| 499 | struct pending_request *req; |
| 500 | |
| 501 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
| 502 | req = __next_complete_req(fi); |
| 503 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
| 504 | return req; |
| 505 | } |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 506 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | static ssize_t raw1394_read(struct file *file, char __user * buffer, |
| 508 | size_t count, loff_t * offset_is_ignored) |
| 509 | { |
| 510 | struct file_info *fi = (struct file_info *)file->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | struct pending_request *req; |
| 512 | ssize_t ret; |
| 513 | |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 514 | #ifdef CONFIG_COMPAT |
| 515 | if (count == sizeof(struct compat_raw1394_req)) { |
| 516 | /* ok */ |
| 517 | } else |
| 518 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | if (count != sizeof(struct raw1394_request)) { |
| 520 | return -EINVAL; |
| 521 | } |
| 522 | |
| 523 | if (!access_ok(VERIFY_WRITE, buffer, count)) { |
| 524 | return -EFAULT; |
| 525 | } |
| 526 | |
| 527 | if (file->f_flags & O_NONBLOCK) { |
Stefan Richter | 45289bf | 2006-07-03 12:02:33 -0400 | [diff] [blame] | 528 | if (!(req = next_complete_req(fi))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | return -EAGAIN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | } else { |
Stefan Richter | 45289bf | 2006-07-03 12:02:33 -0400 | [diff] [blame] | 531 | /* |
| 532 | * NB: We call the macro wait_event_interruptible() with a |
| 533 | * condition argument with side effect. This is only possible |
| 534 | * because the side effect does not occur until the condition |
| 535 | * became true, and wait_event_interruptible() won't evaluate |
| 536 | * the condition again after that. |
| 537 | */ |
| 538 | if (wait_event_interruptible(fi->wait_complete, |
| 539 | (req = next_complete_req(fi)))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | return -ERESTARTSYS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | } |
| 542 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | if (req->req.length) { |
| 544 | if (copy_to_user(int2ptr(req->req.recvb), req->data, |
| 545 | req->req.length)) { |
| 546 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 547 | } |
| 548 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 550 | #ifdef CONFIG_COMPAT |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 551 | if (count == sizeof(struct compat_raw1394_req) && |
| 552 | sizeof(struct compat_raw1394_req) != |
| 553 | sizeof(struct raw1394_request)) { |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 554 | ret = raw1394_compat_read(buffer, &req->req); |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 555 | } else |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 556 | #endif |
| 557 | { |
| 558 | if (copy_to_user(buffer, &req->req, sizeof(req->req))) { |
| 559 | ret = -EFAULT; |
| 560 | goto out; |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 561 | } |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 562 | ret = (ssize_t) sizeof(struct raw1394_request); |
| 563 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | out: |
| 565 | free_pending_request(req); |
| 566 | return ret; |
| 567 | } |
| 568 | |
| 569 | static int state_opened(struct file_info *fi, struct pending_request *req) |
| 570 | { |
| 571 | if (req->req.type == RAW1394_REQ_INITIALIZE) { |
| 572 | switch (req->req.misc) { |
| 573 | case RAW1394_KERNELAPI_VERSION: |
| 574 | case 3: |
| 575 | fi->state = initialized; |
| 576 | fi->protocol_version = req->req.misc; |
| 577 | req->req.error = RAW1394_ERROR_NONE; |
| 578 | req->req.generation = atomic_read(&internal_generation); |
| 579 | break; |
| 580 | |
| 581 | default: |
| 582 | req->req.error = RAW1394_ERROR_COMPAT; |
| 583 | req->req.misc = RAW1394_KERNELAPI_VERSION; |
| 584 | } |
| 585 | } else { |
| 586 | req->req.error = RAW1394_ERROR_STATE_ORDER; |
| 587 | } |
| 588 | |
| 589 | req->req.length = 0; |
| 590 | queue_complete_req(req); |
| 591 | return sizeof(struct raw1394_request); |
| 592 | } |
| 593 | |
| 594 | static int state_initialized(struct file_info *fi, struct pending_request *req) |
| 595 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 596 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | struct host_info *hi; |
| 598 | struct raw1394_khost_list *khl; |
| 599 | |
| 600 | if (req->req.generation != atomic_read(&internal_generation)) { |
| 601 | req->req.error = RAW1394_ERROR_GENERATION; |
| 602 | req->req.generation = atomic_read(&internal_generation); |
| 603 | req->req.length = 0; |
| 604 | queue_complete_req(req); |
| 605 | return sizeof(struct raw1394_request); |
| 606 | } |
| 607 | |
| 608 | switch (req->req.type) { |
| 609 | case RAW1394_REQ_LIST_CARDS: |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 610 | spin_lock_irqsave(&host_info_lock, flags); |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 611 | khl = kmalloc(sizeof(*khl) * host_count, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 613 | if (khl) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | req->req.misc = host_count; |
| 615 | req->data = (quadlet_t *) khl; |
| 616 | |
| 617 | list_for_each_entry(hi, &host_info_list, list) { |
| 618 | khl->nodes = hi->host->node_count; |
| 619 | strcpy(khl->name, hi->host->driver->name); |
| 620 | khl++; |
| 621 | } |
| 622 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 623 | spin_unlock_irqrestore(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 625 | if (khl) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | req->req.error = RAW1394_ERROR_NONE; |
| 627 | req->req.length = min(req->req.length, |
| 628 | (u32) (sizeof |
| 629 | (struct raw1394_khost_list) |
| 630 | * req->req.misc)); |
| 631 | req->free_data = 1; |
| 632 | } else { |
| 633 | return -ENOMEM; |
| 634 | } |
| 635 | break; |
| 636 | |
| 637 | case RAW1394_REQ_SET_CARD: |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 638 | spin_lock_irqsave(&host_info_lock, flags); |
Stefan Richter | 0fe4c6f | 2007-02-03 16:48:51 +0100 | [diff] [blame] | 639 | if (req->req.misc >= host_count) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
Stefan Richter | 0fe4c6f | 2007-02-03 16:48:51 +0100 | [diff] [blame] | 641 | goto out_set_card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | } |
Stefan Richter | 0fe4c6f | 2007-02-03 16:48:51 +0100 | [diff] [blame] | 643 | list_for_each_entry(hi, &host_info_list, list) |
| 644 | if (!req->req.misc--) |
| 645 | break; |
| 646 | get_device(&hi->host->device); /* FIXME handle failure case */ |
| 647 | list_add_tail(&fi->list, &hi->file_info_list); |
| 648 | |
| 649 | /* prevent unloading of the host's low-level driver */ |
| 650 | if (!try_module_get(hi->host->driver->owner)) { |
| 651 | req->req.error = RAW1394_ERROR_ABORTED; |
| 652 | goto out_set_card; |
| 653 | } |
| 654 | WARN_ON(fi->host); |
| 655 | fi->host = hi->host; |
| 656 | fi->state = connected; |
| 657 | |
| 658 | req->req.error = RAW1394_ERROR_NONE; |
| 659 | req->req.generation = get_hpsb_generation(fi->host); |
| 660 | req->req.misc = (fi->host->node_id << 16) |
| 661 | | fi->host->node_count; |
| 662 | if (fi->protocol_version > 3) |
| 663 | req->req.misc |= NODEID_TO_NODE(fi->host->irm_id) << 8; |
| 664 | out_set_card: |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 665 | spin_unlock_irqrestore(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | |
| 667 | req->req.length = 0; |
| 668 | break; |
| 669 | |
| 670 | default: |
| 671 | req->req.error = RAW1394_ERROR_STATE_ORDER; |
| 672 | req->req.length = 0; |
| 673 | break; |
| 674 | } |
| 675 | |
| 676 | queue_complete_req(req); |
| 677 | return sizeof(struct raw1394_request); |
| 678 | } |
| 679 | |
| 680 | static void handle_iso_listen(struct file_info *fi, struct pending_request *req) |
| 681 | { |
| 682 | int channel = req->req.misc; |
| 683 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | if ((channel > 63) || (channel < -64)) { |
| 685 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 686 | } else if (channel >= 0) { |
| 687 | /* allocate channel req.misc */ |
| 688 | if (fi->listen_channels & (1ULL << channel)) { |
| 689 | req->req.error = RAW1394_ERROR_ALREADY; |
| 690 | } else { |
| 691 | if (hpsb_listen_channel |
| 692 | (&raw1394_highlevel, fi->host, channel)) { |
| 693 | req->req.error = RAW1394_ERROR_ALREADY; |
| 694 | } else { |
| 695 | fi->listen_channels |= 1ULL << channel; |
| 696 | fi->iso_buffer = int2ptr(req->req.recvb); |
| 697 | fi->iso_buffer_length = req->req.length; |
| 698 | } |
| 699 | } |
| 700 | } else { |
| 701 | /* deallocate channel (one's complement neg) req.misc */ |
| 702 | channel = ~channel; |
| 703 | |
| 704 | if (fi->listen_channels & (1ULL << channel)) { |
| 705 | hpsb_unlisten_channel(&raw1394_highlevel, fi->host, |
| 706 | channel); |
| 707 | fi->listen_channels &= ~(1ULL << channel); |
| 708 | } else { |
| 709 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 710 | } |
| 711 | } |
| 712 | |
| 713 | req->req.length = 0; |
| 714 | queue_complete_req(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | } |
| 716 | |
| 717 | static void handle_fcp_listen(struct file_info *fi, struct pending_request *req) |
| 718 | { |
| 719 | if (req->req.misc) { |
| 720 | if (fi->fcp_buffer) { |
| 721 | req->req.error = RAW1394_ERROR_ALREADY; |
| 722 | } else { |
| 723 | fi->fcp_buffer = int2ptr(req->req.recvb); |
| 724 | } |
| 725 | } else { |
| 726 | if (!fi->fcp_buffer) { |
| 727 | req->req.error = RAW1394_ERROR_ALREADY; |
| 728 | } else { |
| 729 | fi->fcp_buffer = NULL; |
| 730 | } |
| 731 | } |
| 732 | |
| 733 | req->req.length = 0; |
| 734 | queue_complete_req(req); |
| 735 | } |
| 736 | |
| 737 | static int handle_async_request(struct file_info *fi, |
| 738 | struct pending_request *req, int node) |
| 739 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 740 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | struct hpsb_packet *packet = NULL; |
| 742 | u64 addr = req->req.address & 0xffffffffffffULL; |
| 743 | |
| 744 | switch (req->req.type) { |
| 745 | case RAW1394_REQ_ASYNC_READ: |
| 746 | DBGMSG("read_request called"); |
| 747 | packet = |
| 748 | hpsb_make_readpacket(fi->host, node, addr, req->req.length); |
| 749 | |
| 750 | if (!packet) |
| 751 | return -ENOMEM; |
| 752 | |
| 753 | if (req->req.length == 4) |
| 754 | req->data = &packet->header[3]; |
| 755 | else |
| 756 | req->data = packet->data; |
| 757 | |
| 758 | break; |
| 759 | |
| 760 | case RAW1394_REQ_ASYNC_WRITE: |
| 761 | DBGMSG("write_request called"); |
| 762 | |
| 763 | packet = hpsb_make_writepacket(fi->host, node, addr, NULL, |
| 764 | req->req.length); |
| 765 | if (!packet) |
| 766 | return -ENOMEM; |
| 767 | |
| 768 | if (req->req.length == 4) { |
| 769 | if (copy_from_user |
| 770 | (&packet->header[3], int2ptr(req->req.sendb), |
| 771 | req->req.length)) |
| 772 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 773 | } else { |
| 774 | if (copy_from_user |
| 775 | (packet->data, int2ptr(req->req.sendb), |
| 776 | req->req.length)) |
| 777 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 778 | } |
| 779 | |
| 780 | req->req.length = 0; |
| 781 | break; |
| 782 | |
| 783 | case RAW1394_REQ_ASYNC_STREAM: |
| 784 | DBGMSG("stream_request called"); |
| 785 | |
| 786 | packet = |
| 787 | hpsb_make_streampacket(fi->host, NULL, req->req.length, |
| 788 | node & 0x3f /*channel */ , |
| 789 | (req->req.misc >> 16) & 0x3, |
| 790 | req->req.misc & 0xf); |
| 791 | if (!packet) |
| 792 | return -ENOMEM; |
| 793 | |
| 794 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), |
| 795 | req->req.length)) |
| 796 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 797 | |
| 798 | req->req.length = 0; |
| 799 | break; |
| 800 | |
| 801 | case RAW1394_REQ_LOCK: |
| 802 | DBGMSG("lock_request called"); |
| 803 | if ((req->req.misc == EXTCODE_FETCH_ADD) |
| 804 | || (req->req.misc == EXTCODE_LITTLE_ADD)) { |
| 805 | if (req->req.length != 4) { |
| 806 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 807 | break; |
| 808 | } |
| 809 | } else { |
| 810 | if (req->req.length != 8) { |
| 811 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 812 | break; |
| 813 | } |
| 814 | } |
| 815 | |
| 816 | packet = hpsb_make_lockpacket(fi->host, node, addr, |
| 817 | req->req.misc, NULL, 0); |
| 818 | if (!packet) |
| 819 | return -ENOMEM; |
| 820 | |
| 821 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), |
| 822 | req->req.length)) { |
| 823 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 824 | break; |
| 825 | } |
| 826 | |
| 827 | req->data = packet->data; |
| 828 | req->req.length = 4; |
| 829 | break; |
| 830 | |
| 831 | case RAW1394_REQ_LOCK64: |
| 832 | DBGMSG("lock64_request called"); |
| 833 | if ((req->req.misc == EXTCODE_FETCH_ADD) |
| 834 | || (req->req.misc == EXTCODE_LITTLE_ADD)) { |
| 835 | if (req->req.length != 8) { |
| 836 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 837 | break; |
| 838 | } |
| 839 | } else { |
| 840 | if (req->req.length != 16) { |
| 841 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 842 | break; |
| 843 | } |
| 844 | } |
| 845 | packet = hpsb_make_lock64packet(fi->host, node, addr, |
| 846 | req->req.misc, NULL, 0); |
| 847 | if (!packet) |
| 848 | return -ENOMEM; |
| 849 | |
| 850 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), |
| 851 | req->req.length)) { |
| 852 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 853 | break; |
| 854 | } |
| 855 | |
| 856 | req->data = packet->data; |
| 857 | req->req.length = 8; |
| 858 | break; |
| 859 | |
| 860 | default: |
| 861 | req->req.error = RAW1394_ERROR_STATE_ORDER; |
| 862 | } |
| 863 | |
| 864 | req->packet = packet; |
| 865 | |
| 866 | if (req->req.error) { |
| 867 | req->req.length = 0; |
| 868 | queue_complete_req(req); |
| 869 | return sizeof(struct raw1394_request); |
| 870 | } |
| 871 | |
| 872 | hpsb_set_packet_complete_task(packet, |
| 873 | (void (*)(void *))queue_complete_cb, req); |
| 874 | |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 875 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | list_add_tail(&req->list, &fi->req_pending); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 877 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | |
| 879 | packet->generation = req->req.generation; |
| 880 | |
| 881 | if (hpsb_send_packet(packet) < 0) { |
| 882 | req->req.error = RAW1394_ERROR_SEND_ERROR; |
| 883 | req->req.length = 0; |
| 884 | hpsb_free_tlabel(packet); |
| 885 | queue_complete_req(req); |
| 886 | } |
| 887 | return sizeof(struct raw1394_request); |
| 888 | } |
| 889 | |
| 890 | static int handle_iso_send(struct file_info *fi, struct pending_request *req, |
| 891 | int channel) |
| 892 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 893 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | struct hpsb_packet *packet; |
| 895 | |
| 896 | packet = hpsb_make_isopacket(fi->host, req->req.length, channel & 0x3f, |
| 897 | (req->req.misc >> 16) & 0x3, |
| 898 | req->req.misc & 0xf); |
| 899 | if (!packet) |
| 900 | return -ENOMEM; |
| 901 | |
| 902 | packet->speed_code = req->req.address & 0x3; |
| 903 | |
| 904 | req->packet = packet; |
| 905 | |
| 906 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), |
| 907 | req->req.length)) { |
| 908 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 909 | req->req.length = 0; |
| 910 | queue_complete_req(req); |
| 911 | return sizeof(struct raw1394_request); |
| 912 | } |
| 913 | |
| 914 | req->req.length = 0; |
| 915 | hpsb_set_packet_complete_task(packet, |
| 916 | (void (*)(void *))queue_complete_req, |
| 917 | req); |
| 918 | |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 919 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | list_add_tail(&req->list, &fi->req_pending); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 921 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | |
| 923 | /* Update the generation of the packet just before sending. */ |
| 924 | packet->generation = req->req.generation; |
| 925 | |
| 926 | if (hpsb_send_packet(packet) < 0) { |
| 927 | req->req.error = RAW1394_ERROR_SEND_ERROR; |
| 928 | queue_complete_req(req); |
| 929 | } |
| 930 | |
| 931 | return sizeof(struct raw1394_request); |
| 932 | } |
| 933 | |
| 934 | static int handle_async_send(struct file_info *fi, struct pending_request *req) |
| 935 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 936 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | struct hpsb_packet *packet; |
| 938 | int header_length = req->req.misc & 0xffff; |
| 939 | int expect_response = req->req.misc >> 16; |
| 940 | |
| 941 | if ((header_length > req->req.length) || (header_length < 12)) { |
| 942 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 943 | req->req.length = 0; |
| 944 | queue_complete_req(req); |
| 945 | return sizeof(struct raw1394_request); |
| 946 | } |
| 947 | |
| 948 | packet = hpsb_alloc_packet(req->req.length - header_length); |
| 949 | req->packet = packet; |
| 950 | if (!packet) |
| 951 | return -ENOMEM; |
| 952 | |
| 953 | if (copy_from_user(packet->header, int2ptr(req->req.sendb), |
| 954 | header_length)) { |
| 955 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 956 | req->req.length = 0; |
| 957 | queue_complete_req(req); |
| 958 | return sizeof(struct raw1394_request); |
| 959 | } |
| 960 | |
| 961 | if (copy_from_user |
| 962 | (packet->data, int2ptr(req->req.sendb) + header_length, |
| 963 | packet->data_size)) { |
| 964 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 965 | req->req.length = 0; |
| 966 | queue_complete_req(req); |
| 967 | return sizeof(struct raw1394_request); |
| 968 | } |
| 969 | |
| 970 | packet->type = hpsb_async; |
| 971 | packet->node_id = packet->header[0] >> 16; |
| 972 | packet->tcode = (packet->header[0] >> 4) & 0xf; |
| 973 | packet->tlabel = (packet->header[0] >> 10) & 0x3f; |
| 974 | packet->host = fi->host; |
| 975 | packet->expect_response = expect_response; |
| 976 | packet->header_size = header_length; |
| 977 | packet->data_size = req->req.length - header_length; |
| 978 | |
| 979 | req->req.length = 0; |
| 980 | hpsb_set_packet_complete_task(packet, |
| 981 | (void (*)(void *))queue_complete_cb, req); |
| 982 | |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 983 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | list_add_tail(&req->list, &fi->req_pending); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 985 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | |
| 987 | /* Update the generation of the packet just before sending. */ |
| 988 | packet->generation = req->req.generation; |
| 989 | |
| 990 | if (hpsb_send_packet(packet) < 0) { |
| 991 | req->req.error = RAW1394_ERROR_SEND_ERROR; |
| 992 | queue_complete_req(req); |
| 993 | } |
| 994 | |
| 995 | return sizeof(struct raw1394_request); |
| 996 | } |
| 997 | |
| 998 | static int arm_read(struct hpsb_host *host, int nodeid, quadlet_t * buffer, |
| 999 | u64 addr, size_t length, u16 flags) |
| 1000 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1001 | unsigned long irqflags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1002 | struct pending_request *req; |
| 1003 | struct host_info *hi; |
| 1004 | struct file_info *fi = NULL; |
| 1005 | struct list_head *entry; |
| 1006 | struct arm_addr *arm_addr = NULL; |
| 1007 | struct arm_request *arm_req = NULL; |
| 1008 | struct arm_response *arm_resp = NULL; |
| 1009 | int found = 0, size = 0, rcode = -1; |
| 1010 | struct arm_request_response *arm_req_resp = NULL; |
| 1011 | |
| 1012 | DBGMSG("arm_read called by node: %X" |
| 1013 | "addr: %4.4x %8.8x length: %Zu", nodeid, |
| 1014 | (u16) ((addr >> 32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF), |
| 1015 | length); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1016 | spin_lock_irqsave(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1017 | hi = find_host_info(host); /* search address-entry */ |
| 1018 | if (hi != NULL) { |
| 1019 | list_for_each_entry(fi, &hi->file_info_list, list) { |
| 1020 | entry = fi->addr_list.next; |
| 1021 | while (entry != &(fi->addr_list)) { |
| 1022 | arm_addr = |
| 1023 | list_entry(entry, struct arm_addr, |
| 1024 | addr_list); |
| 1025 | if (((arm_addr->start) <= (addr)) |
| 1026 | && ((arm_addr->end) >= (addr + length))) { |
| 1027 | found = 1; |
| 1028 | break; |
| 1029 | } |
| 1030 | entry = entry->next; |
| 1031 | } |
| 1032 | if (found) { |
| 1033 | break; |
| 1034 | } |
| 1035 | } |
| 1036 | } |
| 1037 | rcode = -1; |
| 1038 | if (!found) { |
| 1039 | printk(KERN_ERR "raw1394: arm_read FAILED addr_entry not found" |
| 1040 | " -> rcode_address_error\n"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1041 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1042 | return (RCODE_ADDRESS_ERROR); |
| 1043 | } else { |
| 1044 | DBGMSG("arm_read addr_entry FOUND"); |
| 1045 | } |
| 1046 | if (arm_addr->rec_length < length) { |
| 1047 | DBGMSG("arm_read blocklength too big -> rcode_data_error"); |
| 1048 | rcode = RCODE_DATA_ERROR; /* hardware error, data is unavailable */ |
| 1049 | } |
| 1050 | if (rcode == -1) { |
| 1051 | if (arm_addr->access_rights & ARM_READ) { |
| 1052 | if (!(arm_addr->client_transactions & ARM_READ)) { |
| 1053 | memcpy(buffer, |
| 1054 | (arm_addr->addr_space_buffer) + (addr - |
| 1055 | (arm_addr-> |
| 1056 | start)), |
| 1057 | length); |
| 1058 | DBGMSG("arm_read -> (rcode_complete)"); |
| 1059 | rcode = RCODE_COMPLETE; |
| 1060 | } |
| 1061 | } else { |
| 1062 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ |
| 1063 | DBGMSG("arm_read -> rcode_type_error (access denied)"); |
| 1064 | } |
| 1065 | } |
| 1066 | if (arm_addr->notification_options & ARM_READ) { |
| 1067 | DBGMSG("arm_read -> entering notification-section"); |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 1068 | req = __alloc_pending_request(GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1069 | if (!req) { |
| 1070 | DBGMSG("arm_read -> rcode_conflict_error"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1071 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1072 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 1073 | The request may be retried */ |
| 1074 | } |
| 1075 | if (rcode == RCODE_COMPLETE) { |
| 1076 | size = |
| 1077 | sizeof(struct arm_request) + |
| 1078 | sizeof(struct arm_response) + |
| 1079 | length * sizeof(byte_t) + |
| 1080 | sizeof(struct arm_request_response); |
| 1081 | } else { |
| 1082 | size = |
| 1083 | sizeof(struct arm_request) + |
| 1084 | sizeof(struct arm_response) + |
| 1085 | sizeof(struct arm_request_response); |
| 1086 | } |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 1087 | req->data = kmalloc(size, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | if (!(req->data)) { |
| 1089 | free_pending_request(req); |
| 1090 | DBGMSG("arm_read -> rcode_conflict_error"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1091 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 1093 | The request may be retried */ |
| 1094 | } |
| 1095 | req->free_data = 1; |
| 1096 | req->file_info = fi; |
| 1097 | req->req.type = RAW1394_REQ_ARM; |
| 1098 | req->req.generation = get_hpsb_generation(host); |
| 1099 | req->req.misc = |
| 1100 | (((length << 16) & (0xFFFF0000)) | (ARM_READ & 0xFF)); |
| 1101 | req->req.tag = arm_addr->arm_tag; |
| 1102 | req->req.recvb = arm_addr->recvb; |
| 1103 | req->req.length = size; |
| 1104 | arm_req_resp = (struct arm_request_response *)(req->data); |
| 1105 | arm_req = (struct arm_request *)((byte_t *) (req->data) + |
| 1106 | (sizeof |
| 1107 | (struct |
| 1108 | arm_request_response))); |
| 1109 | arm_resp = |
| 1110 | (struct arm_response *)((byte_t *) (arm_req) + |
| 1111 | (sizeof(struct arm_request))); |
| 1112 | arm_req->buffer = NULL; |
| 1113 | arm_resp->buffer = NULL; |
| 1114 | if (rcode == RCODE_COMPLETE) { |
| 1115 | byte_t *buf = |
| 1116 | (byte_t *) arm_resp + sizeof(struct arm_response); |
| 1117 | memcpy(buf, |
| 1118 | (arm_addr->addr_space_buffer) + (addr - |
| 1119 | (arm_addr-> |
| 1120 | start)), |
| 1121 | length); |
| 1122 | arm_resp->buffer = |
| 1123 | int2ptr((arm_addr->recvb) + |
| 1124 | sizeof(struct arm_request_response) + |
| 1125 | sizeof(struct arm_request) + |
| 1126 | sizeof(struct arm_response)); |
| 1127 | } |
| 1128 | arm_resp->buffer_length = |
| 1129 | (rcode == RCODE_COMPLETE) ? length : 0; |
| 1130 | arm_resp->response_code = rcode; |
| 1131 | arm_req->buffer_length = 0; |
| 1132 | arm_req->generation = req->req.generation; |
| 1133 | arm_req->extended_transaction_code = 0; |
| 1134 | arm_req->destination_offset = addr; |
| 1135 | arm_req->source_nodeid = nodeid; |
| 1136 | arm_req->destination_nodeid = host->node_id; |
| 1137 | arm_req->tlabel = (flags >> 10) & 0x3f; |
| 1138 | arm_req->tcode = (flags >> 4) & 0x0f; |
| 1139 | arm_req_resp->request = int2ptr((arm_addr->recvb) + |
| 1140 | sizeof(struct |
| 1141 | arm_request_response)); |
| 1142 | arm_req_resp->response = |
| 1143 | int2ptr((arm_addr->recvb) + |
| 1144 | sizeof(struct arm_request_response) + |
| 1145 | sizeof(struct arm_request)); |
| 1146 | queue_complete_req(req); |
| 1147 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1148 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | return (rcode); |
| 1150 | } |
| 1151 | |
| 1152 | static int arm_write(struct hpsb_host *host, int nodeid, int destid, |
| 1153 | quadlet_t * data, u64 addr, size_t length, u16 flags) |
| 1154 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1155 | unsigned long irqflags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1156 | struct pending_request *req; |
| 1157 | struct host_info *hi; |
| 1158 | struct file_info *fi = NULL; |
| 1159 | struct list_head *entry; |
| 1160 | struct arm_addr *arm_addr = NULL; |
| 1161 | struct arm_request *arm_req = NULL; |
| 1162 | struct arm_response *arm_resp = NULL; |
| 1163 | int found = 0, size = 0, rcode = -1, length_conflict = 0; |
| 1164 | struct arm_request_response *arm_req_resp = NULL; |
| 1165 | |
| 1166 | DBGMSG("arm_write called by node: %X" |
| 1167 | "addr: %4.4x %8.8x length: %Zu", nodeid, |
| 1168 | (u16) ((addr >> 32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF), |
| 1169 | length); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1170 | spin_lock_irqsave(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1171 | hi = find_host_info(host); /* search address-entry */ |
| 1172 | if (hi != NULL) { |
| 1173 | list_for_each_entry(fi, &hi->file_info_list, list) { |
| 1174 | entry = fi->addr_list.next; |
| 1175 | while (entry != &(fi->addr_list)) { |
| 1176 | arm_addr = |
| 1177 | list_entry(entry, struct arm_addr, |
| 1178 | addr_list); |
| 1179 | if (((arm_addr->start) <= (addr)) |
| 1180 | && ((arm_addr->end) >= (addr + length))) { |
| 1181 | found = 1; |
| 1182 | break; |
| 1183 | } |
| 1184 | entry = entry->next; |
| 1185 | } |
| 1186 | if (found) { |
| 1187 | break; |
| 1188 | } |
| 1189 | } |
| 1190 | } |
| 1191 | rcode = -1; |
| 1192 | if (!found) { |
| 1193 | printk(KERN_ERR "raw1394: arm_write FAILED addr_entry not found" |
| 1194 | " -> rcode_address_error\n"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1195 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | return (RCODE_ADDRESS_ERROR); |
| 1197 | } else { |
| 1198 | DBGMSG("arm_write addr_entry FOUND"); |
| 1199 | } |
| 1200 | if (arm_addr->rec_length < length) { |
| 1201 | DBGMSG("arm_write blocklength too big -> rcode_data_error"); |
| 1202 | length_conflict = 1; |
| 1203 | rcode = RCODE_DATA_ERROR; /* hardware error, data is unavailable */ |
| 1204 | } |
| 1205 | if (rcode == -1) { |
| 1206 | if (arm_addr->access_rights & ARM_WRITE) { |
| 1207 | if (!(arm_addr->client_transactions & ARM_WRITE)) { |
| 1208 | memcpy((arm_addr->addr_space_buffer) + |
| 1209 | (addr - (arm_addr->start)), data, |
| 1210 | length); |
| 1211 | DBGMSG("arm_write -> (rcode_complete)"); |
| 1212 | rcode = RCODE_COMPLETE; |
| 1213 | } |
| 1214 | } else { |
| 1215 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ |
| 1216 | DBGMSG("arm_write -> rcode_type_error (access denied)"); |
| 1217 | } |
| 1218 | } |
| 1219 | if (arm_addr->notification_options & ARM_WRITE) { |
| 1220 | DBGMSG("arm_write -> entering notification-section"); |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 1221 | req = __alloc_pending_request(GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1222 | if (!req) { |
| 1223 | DBGMSG("arm_write -> rcode_conflict_error"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1224 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1225 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 1226 | The request my be retried */ |
| 1227 | } |
| 1228 | size = |
| 1229 | sizeof(struct arm_request) + sizeof(struct arm_response) + |
| 1230 | (length) * sizeof(byte_t) + |
| 1231 | sizeof(struct arm_request_response); |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 1232 | req->data = kmalloc(size, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1233 | if (!(req->data)) { |
| 1234 | free_pending_request(req); |
| 1235 | DBGMSG("arm_write -> rcode_conflict_error"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1236 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1237 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 1238 | The request may be retried */ |
| 1239 | } |
| 1240 | req->free_data = 1; |
| 1241 | req->file_info = fi; |
| 1242 | req->req.type = RAW1394_REQ_ARM; |
| 1243 | req->req.generation = get_hpsb_generation(host); |
| 1244 | req->req.misc = |
| 1245 | (((length << 16) & (0xFFFF0000)) | (ARM_WRITE & 0xFF)); |
| 1246 | req->req.tag = arm_addr->arm_tag; |
| 1247 | req->req.recvb = arm_addr->recvb; |
| 1248 | req->req.length = size; |
| 1249 | arm_req_resp = (struct arm_request_response *)(req->data); |
| 1250 | arm_req = (struct arm_request *)((byte_t *) (req->data) + |
| 1251 | (sizeof |
| 1252 | (struct |
| 1253 | arm_request_response))); |
| 1254 | arm_resp = |
| 1255 | (struct arm_response *)((byte_t *) (arm_req) + |
| 1256 | (sizeof(struct arm_request))); |
| 1257 | arm_resp->buffer = NULL; |
| 1258 | memcpy((byte_t *) arm_resp + sizeof(struct arm_response), |
| 1259 | data, length); |
| 1260 | arm_req->buffer = int2ptr((arm_addr->recvb) + |
| 1261 | sizeof(struct arm_request_response) + |
| 1262 | sizeof(struct arm_request) + |
| 1263 | sizeof(struct arm_response)); |
| 1264 | arm_req->buffer_length = length; |
| 1265 | arm_req->generation = req->req.generation; |
| 1266 | arm_req->extended_transaction_code = 0; |
| 1267 | arm_req->destination_offset = addr; |
| 1268 | arm_req->source_nodeid = nodeid; |
| 1269 | arm_req->destination_nodeid = destid; |
| 1270 | arm_req->tlabel = (flags >> 10) & 0x3f; |
| 1271 | arm_req->tcode = (flags >> 4) & 0x0f; |
| 1272 | arm_resp->buffer_length = 0; |
| 1273 | arm_resp->response_code = rcode; |
| 1274 | arm_req_resp->request = int2ptr((arm_addr->recvb) + |
| 1275 | sizeof(struct |
| 1276 | arm_request_response)); |
| 1277 | arm_req_resp->response = |
| 1278 | int2ptr((arm_addr->recvb) + |
| 1279 | sizeof(struct arm_request_response) + |
| 1280 | sizeof(struct arm_request)); |
| 1281 | queue_complete_req(req); |
| 1282 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1283 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1284 | return (rcode); |
| 1285 | } |
| 1286 | |
| 1287 | static int arm_lock(struct hpsb_host *host, int nodeid, quadlet_t * store, |
| 1288 | u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode, |
| 1289 | u16 flags) |
| 1290 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1291 | unsigned long irqflags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1292 | struct pending_request *req; |
| 1293 | struct host_info *hi; |
| 1294 | struct file_info *fi = NULL; |
| 1295 | struct list_head *entry; |
| 1296 | struct arm_addr *arm_addr = NULL; |
| 1297 | struct arm_request *arm_req = NULL; |
| 1298 | struct arm_response *arm_resp = NULL; |
| 1299 | int found = 0, size = 0, rcode = -1; |
| 1300 | quadlet_t old, new; |
| 1301 | struct arm_request_response *arm_req_resp = NULL; |
| 1302 | |
| 1303 | if (((ext_tcode & 0xFF) == EXTCODE_FETCH_ADD) || |
| 1304 | ((ext_tcode & 0xFF) == EXTCODE_LITTLE_ADD)) { |
| 1305 | DBGMSG("arm_lock called by node: %X " |
| 1306 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X", |
| 1307 | nodeid, (u16) ((addr >> 32) & 0xFFFF), |
| 1308 | (u32) (addr & 0xFFFFFFFF), ext_tcode & 0xFF, |
| 1309 | be32_to_cpu(data)); |
| 1310 | } else { |
| 1311 | DBGMSG("arm_lock called by node: %X " |
| 1312 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X arg: %8.8X", |
| 1313 | nodeid, (u16) ((addr >> 32) & 0xFFFF), |
| 1314 | (u32) (addr & 0xFFFFFFFF), ext_tcode & 0xFF, |
| 1315 | be32_to_cpu(data), be32_to_cpu(arg)); |
| 1316 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1317 | spin_lock_irqsave(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1318 | hi = find_host_info(host); /* search address-entry */ |
| 1319 | if (hi != NULL) { |
| 1320 | list_for_each_entry(fi, &hi->file_info_list, list) { |
| 1321 | entry = fi->addr_list.next; |
| 1322 | while (entry != &(fi->addr_list)) { |
| 1323 | arm_addr = |
| 1324 | list_entry(entry, struct arm_addr, |
| 1325 | addr_list); |
| 1326 | if (((arm_addr->start) <= (addr)) |
| 1327 | && ((arm_addr->end) >= |
| 1328 | (addr + sizeof(*store)))) { |
| 1329 | found = 1; |
| 1330 | break; |
| 1331 | } |
| 1332 | entry = entry->next; |
| 1333 | } |
| 1334 | if (found) { |
| 1335 | break; |
| 1336 | } |
| 1337 | } |
| 1338 | } |
| 1339 | rcode = -1; |
| 1340 | if (!found) { |
| 1341 | printk(KERN_ERR "raw1394: arm_lock FAILED addr_entry not found" |
| 1342 | " -> rcode_address_error\n"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1343 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1344 | return (RCODE_ADDRESS_ERROR); |
| 1345 | } else { |
| 1346 | DBGMSG("arm_lock addr_entry FOUND"); |
| 1347 | } |
| 1348 | if (rcode == -1) { |
| 1349 | if (arm_addr->access_rights & ARM_LOCK) { |
| 1350 | if (!(arm_addr->client_transactions & ARM_LOCK)) { |
| 1351 | memcpy(&old, |
| 1352 | (arm_addr->addr_space_buffer) + (addr - |
| 1353 | (arm_addr-> |
| 1354 | start)), |
| 1355 | sizeof(old)); |
| 1356 | switch (ext_tcode) { |
| 1357 | case (EXTCODE_MASK_SWAP): |
| 1358 | new = data | (old & ~arg); |
| 1359 | break; |
| 1360 | case (EXTCODE_COMPARE_SWAP): |
| 1361 | if (old == arg) { |
| 1362 | new = data; |
| 1363 | } else { |
| 1364 | new = old; |
| 1365 | } |
| 1366 | break; |
| 1367 | case (EXTCODE_FETCH_ADD): |
| 1368 | new = |
| 1369 | cpu_to_be32(be32_to_cpu(data) + |
| 1370 | be32_to_cpu(old)); |
| 1371 | break; |
| 1372 | case (EXTCODE_LITTLE_ADD): |
| 1373 | new = |
| 1374 | cpu_to_le32(le32_to_cpu(data) + |
| 1375 | le32_to_cpu(old)); |
| 1376 | break; |
| 1377 | case (EXTCODE_BOUNDED_ADD): |
| 1378 | if (old != arg) { |
| 1379 | new = |
| 1380 | cpu_to_be32(be32_to_cpu |
| 1381 | (data) + |
| 1382 | be32_to_cpu |
| 1383 | (old)); |
| 1384 | } else { |
| 1385 | new = old; |
| 1386 | } |
| 1387 | break; |
| 1388 | case (EXTCODE_WRAP_ADD): |
| 1389 | if (old != arg) { |
| 1390 | new = |
| 1391 | cpu_to_be32(be32_to_cpu |
| 1392 | (data) + |
| 1393 | be32_to_cpu |
| 1394 | (old)); |
| 1395 | } else { |
| 1396 | new = data; |
| 1397 | } |
| 1398 | break; |
| 1399 | default: |
| 1400 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ |
| 1401 | printk(KERN_ERR |
| 1402 | "raw1394: arm_lock FAILED " |
| 1403 | "ext_tcode not allowed -> rcode_type_error\n"); |
| 1404 | break; |
| 1405 | } /*switch */ |
| 1406 | if (rcode == -1) { |
| 1407 | DBGMSG("arm_lock -> (rcode_complete)"); |
| 1408 | rcode = RCODE_COMPLETE; |
| 1409 | memcpy(store, &old, sizeof(*store)); |
| 1410 | memcpy((arm_addr->addr_space_buffer) + |
| 1411 | (addr - (arm_addr->start)), |
| 1412 | &new, sizeof(*store)); |
| 1413 | } |
| 1414 | } |
| 1415 | } else { |
| 1416 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ |
| 1417 | DBGMSG("arm_lock -> rcode_type_error (access denied)"); |
| 1418 | } |
| 1419 | } |
| 1420 | if (arm_addr->notification_options & ARM_LOCK) { |
| 1421 | byte_t *buf1, *buf2; |
| 1422 | DBGMSG("arm_lock -> entering notification-section"); |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 1423 | req = __alloc_pending_request(GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1424 | if (!req) { |
| 1425 | DBGMSG("arm_lock -> rcode_conflict_error"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1426 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1427 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 1428 | The request may be retried */ |
| 1429 | } |
| 1430 | size = sizeof(struct arm_request) + sizeof(struct arm_response) + 3 * sizeof(*store) + sizeof(struct arm_request_response); /* maximum */ |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 1431 | req->data = kmalloc(size, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1432 | if (!(req->data)) { |
| 1433 | free_pending_request(req); |
| 1434 | DBGMSG("arm_lock -> rcode_conflict_error"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1435 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1436 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 1437 | The request may be retried */ |
| 1438 | } |
| 1439 | req->free_data = 1; |
| 1440 | arm_req_resp = (struct arm_request_response *)(req->data); |
| 1441 | arm_req = (struct arm_request *)((byte_t *) (req->data) + |
| 1442 | (sizeof |
| 1443 | (struct |
| 1444 | arm_request_response))); |
| 1445 | arm_resp = |
| 1446 | (struct arm_response *)((byte_t *) (arm_req) + |
| 1447 | (sizeof(struct arm_request))); |
| 1448 | buf1 = (byte_t *) arm_resp + sizeof(struct arm_response); |
| 1449 | buf2 = buf1 + 2 * sizeof(*store); |
| 1450 | if ((ext_tcode == EXTCODE_FETCH_ADD) || |
| 1451 | (ext_tcode == EXTCODE_LITTLE_ADD)) { |
| 1452 | arm_req->buffer_length = sizeof(*store); |
| 1453 | memcpy(buf1, &data, sizeof(*store)); |
| 1454 | |
| 1455 | } else { |
| 1456 | arm_req->buffer_length = 2 * sizeof(*store); |
| 1457 | memcpy(buf1, &arg, sizeof(*store)); |
| 1458 | memcpy(buf1 + sizeof(*store), &data, sizeof(*store)); |
| 1459 | } |
| 1460 | if (rcode == RCODE_COMPLETE) { |
| 1461 | arm_resp->buffer_length = sizeof(*store); |
| 1462 | memcpy(buf2, &old, sizeof(*store)); |
| 1463 | } else { |
| 1464 | arm_resp->buffer_length = 0; |
| 1465 | } |
| 1466 | req->file_info = fi; |
| 1467 | req->req.type = RAW1394_REQ_ARM; |
| 1468 | req->req.generation = get_hpsb_generation(host); |
| 1469 | req->req.misc = ((((sizeof(*store)) << 16) & (0xFFFF0000)) | |
| 1470 | (ARM_LOCK & 0xFF)); |
| 1471 | req->req.tag = arm_addr->arm_tag; |
| 1472 | req->req.recvb = arm_addr->recvb; |
| 1473 | req->req.length = size; |
| 1474 | arm_req->generation = req->req.generation; |
| 1475 | arm_req->extended_transaction_code = ext_tcode; |
| 1476 | arm_req->destination_offset = addr; |
| 1477 | arm_req->source_nodeid = nodeid; |
| 1478 | arm_req->destination_nodeid = host->node_id; |
| 1479 | arm_req->tlabel = (flags >> 10) & 0x3f; |
| 1480 | arm_req->tcode = (flags >> 4) & 0x0f; |
| 1481 | arm_resp->response_code = rcode; |
| 1482 | arm_req_resp->request = int2ptr((arm_addr->recvb) + |
| 1483 | sizeof(struct |
| 1484 | arm_request_response)); |
| 1485 | arm_req_resp->response = |
| 1486 | int2ptr((arm_addr->recvb) + |
| 1487 | sizeof(struct arm_request_response) + |
| 1488 | sizeof(struct arm_request)); |
| 1489 | arm_req->buffer = |
| 1490 | int2ptr((arm_addr->recvb) + |
| 1491 | sizeof(struct arm_request_response) + |
| 1492 | sizeof(struct arm_request) + |
| 1493 | sizeof(struct arm_response)); |
| 1494 | arm_resp->buffer = |
| 1495 | int2ptr((arm_addr->recvb) + |
| 1496 | sizeof(struct arm_request_response) + |
| 1497 | sizeof(struct arm_request) + |
| 1498 | sizeof(struct arm_response) + 2 * sizeof(*store)); |
| 1499 | queue_complete_req(req); |
| 1500 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1501 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1502 | return (rcode); |
| 1503 | } |
| 1504 | |
| 1505 | static int arm_lock64(struct hpsb_host *host, int nodeid, octlet_t * store, |
| 1506 | u64 addr, octlet_t data, octlet_t arg, int ext_tcode, |
| 1507 | u16 flags) |
| 1508 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1509 | unsigned long irqflags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1510 | struct pending_request *req; |
| 1511 | struct host_info *hi; |
| 1512 | struct file_info *fi = NULL; |
| 1513 | struct list_head *entry; |
| 1514 | struct arm_addr *arm_addr = NULL; |
| 1515 | struct arm_request *arm_req = NULL; |
| 1516 | struct arm_response *arm_resp = NULL; |
| 1517 | int found = 0, size = 0, rcode = -1; |
| 1518 | octlet_t old, new; |
| 1519 | struct arm_request_response *arm_req_resp = NULL; |
| 1520 | |
| 1521 | if (((ext_tcode & 0xFF) == EXTCODE_FETCH_ADD) || |
| 1522 | ((ext_tcode & 0xFF) == EXTCODE_LITTLE_ADD)) { |
| 1523 | DBGMSG("arm_lock64 called by node: %X " |
| 1524 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X %8.8X ", |
| 1525 | nodeid, (u16) ((addr >> 32) & 0xFFFF), |
| 1526 | (u32) (addr & 0xFFFFFFFF), |
| 1527 | ext_tcode & 0xFF, |
| 1528 | (u32) ((be64_to_cpu(data) >> 32) & 0xFFFFFFFF), |
| 1529 | (u32) (be64_to_cpu(data) & 0xFFFFFFFF)); |
| 1530 | } else { |
| 1531 | DBGMSG("arm_lock64 called by node: %X " |
| 1532 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X %8.8X arg: " |
| 1533 | "%8.8X %8.8X ", |
| 1534 | nodeid, (u16) ((addr >> 32) & 0xFFFF), |
| 1535 | (u32) (addr & 0xFFFFFFFF), |
| 1536 | ext_tcode & 0xFF, |
| 1537 | (u32) ((be64_to_cpu(data) >> 32) & 0xFFFFFFFF), |
| 1538 | (u32) (be64_to_cpu(data) & 0xFFFFFFFF), |
| 1539 | (u32) ((be64_to_cpu(arg) >> 32) & 0xFFFFFFFF), |
| 1540 | (u32) (be64_to_cpu(arg) & 0xFFFFFFFF)); |
| 1541 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1542 | spin_lock_irqsave(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1543 | hi = find_host_info(host); /* search addressentry in file_info's for host */ |
| 1544 | if (hi != NULL) { |
| 1545 | list_for_each_entry(fi, &hi->file_info_list, list) { |
| 1546 | entry = fi->addr_list.next; |
| 1547 | while (entry != &(fi->addr_list)) { |
| 1548 | arm_addr = |
| 1549 | list_entry(entry, struct arm_addr, |
| 1550 | addr_list); |
| 1551 | if (((arm_addr->start) <= (addr)) |
| 1552 | && ((arm_addr->end) >= |
| 1553 | (addr + sizeof(*store)))) { |
| 1554 | found = 1; |
| 1555 | break; |
| 1556 | } |
| 1557 | entry = entry->next; |
| 1558 | } |
| 1559 | if (found) { |
| 1560 | break; |
| 1561 | } |
| 1562 | } |
| 1563 | } |
| 1564 | rcode = -1; |
| 1565 | if (!found) { |
| 1566 | printk(KERN_ERR |
| 1567 | "raw1394: arm_lock64 FAILED addr_entry not found" |
| 1568 | " -> rcode_address_error\n"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1569 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1570 | return (RCODE_ADDRESS_ERROR); |
| 1571 | } else { |
| 1572 | DBGMSG("arm_lock64 addr_entry FOUND"); |
| 1573 | } |
| 1574 | if (rcode == -1) { |
| 1575 | if (arm_addr->access_rights & ARM_LOCK) { |
| 1576 | if (!(arm_addr->client_transactions & ARM_LOCK)) { |
| 1577 | memcpy(&old, |
| 1578 | (arm_addr->addr_space_buffer) + (addr - |
| 1579 | (arm_addr-> |
| 1580 | start)), |
| 1581 | sizeof(old)); |
| 1582 | switch (ext_tcode) { |
| 1583 | case (EXTCODE_MASK_SWAP): |
| 1584 | new = data | (old & ~arg); |
| 1585 | break; |
| 1586 | case (EXTCODE_COMPARE_SWAP): |
| 1587 | if (old == arg) { |
| 1588 | new = data; |
| 1589 | } else { |
| 1590 | new = old; |
| 1591 | } |
| 1592 | break; |
| 1593 | case (EXTCODE_FETCH_ADD): |
| 1594 | new = |
| 1595 | cpu_to_be64(be64_to_cpu(data) + |
| 1596 | be64_to_cpu(old)); |
| 1597 | break; |
| 1598 | case (EXTCODE_LITTLE_ADD): |
| 1599 | new = |
| 1600 | cpu_to_le64(le64_to_cpu(data) + |
| 1601 | le64_to_cpu(old)); |
| 1602 | break; |
| 1603 | case (EXTCODE_BOUNDED_ADD): |
| 1604 | if (old != arg) { |
| 1605 | new = |
| 1606 | cpu_to_be64(be64_to_cpu |
| 1607 | (data) + |
| 1608 | be64_to_cpu |
| 1609 | (old)); |
| 1610 | } else { |
| 1611 | new = old; |
| 1612 | } |
| 1613 | break; |
| 1614 | case (EXTCODE_WRAP_ADD): |
| 1615 | if (old != arg) { |
| 1616 | new = |
| 1617 | cpu_to_be64(be64_to_cpu |
| 1618 | (data) + |
| 1619 | be64_to_cpu |
| 1620 | (old)); |
| 1621 | } else { |
| 1622 | new = data; |
| 1623 | } |
| 1624 | break; |
| 1625 | default: |
| 1626 | printk(KERN_ERR |
| 1627 | "raw1394: arm_lock64 FAILED " |
| 1628 | "ext_tcode not allowed -> rcode_type_error\n"); |
| 1629 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ |
| 1630 | break; |
| 1631 | } /*switch */ |
| 1632 | if (rcode == -1) { |
| 1633 | DBGMSG |
| 1634 | ("arm_lock64 -> (rcode_complete)"); |
| 1635 | rcode = RCODE_COMPLETE; |
| 1636 | memcpy(store, &old, sizeof(*store)); |
| 1637 | memcpy((arm_addr->addr_space_buffer) + |
| 1638 | (addr - (arm_addr->start)), |
| 1639 | &new, sizeof(*store)); |
| 1640 | } |
| 1641 | } |
| 1642 | } else { |
| 1643 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ |
| 1644 | DBGMSG |
| 1645 | ("arm_lock64 -> rcode_type_error (access denied)"); |
| 1646 | } |
| 1647 | } |
| 1648 | if (arm_addr->notification_options & ARM_LOCK) { |
| 1649 | byte_t *buf1, *buf2; |
| 1650 | DBGMSG("arm_lock64 -> entering notification-section"); |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 1651 | req = __alloc_pending_request(GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1652 | if (!req) { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1653 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1654 | DBGMSG("arm_lock64 -> rcode_conflict_error"); |
| 1655 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 1656 | The request may be retried */ |
| 1657 | } |
| 1658 | size = sizeof(struct arm_request) + sizeof(struct arm_response) + 3 * sizeof(*store) + sizeof(struct arm_request_response); /* maximum */ |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 1659 | req->data = kmalloc(size, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1660 | if (!(req->data)) { |
| 1661 | free_pending_request(req); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1662 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1663 | DBGMSG("arm_lock64 -> rcode_conflict_error"); |
| 1664 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 1665 | The request may be retried */ |
| 1666 | } |
| 1667 | req->free_data = 1; |
| 1668 | arm_req_resp = (struct arm_request_response *)(req->data); |
| 1669 | arm_req = (struct arm_request *)((byte_t *) (req->data) + |
| 1670 | (sizeof |
| 1671 | (struct |
| 1672 | arm_request_response))); |
| 1673 | arm_resp = |
| 1674 | (struct arm_response *)((byte_t *) (arm_req) + |
| 1675 | (sizeof(struct arm_request))); |
| 1676 | buf1 = (byte_t *) arm_resp + sizeof(struct arm_response); |
| 1677 | buf2 = buf1 + 2 * sizeof(*store); |
| 1678 | if ((ext_tcode == EXTCODE_FETCH_ADD) || |
| 1679 | (ext_tcode == EXTCODE_LITTLE_ADD)) { |
| 1680 | arm_req->buffer_length = sizeof(*store); |
| 1681 | memcpy(buf1, &data, sizeof(*store)); |
| 1682 | |
| 1683 | } else { |
| 1684 | arm_req->buffer_length = 2 * sizeof(*store); |
| 1685 | memcpy(buf1, &arg, sizeof(*store)); |
| 1686 | memcpy(buf1 + sizeof(*store), &data, sizeof(*store)); |
| 1687 | } |
| 1688 | if (rcode == RCODE_COMPLETE) { |
| 1689 | arm_resp->buffer_length = sizeof(*store); |
| 1690 | memcpy(buf2, &old, sizeof(*store)); |
| 1691 | } else { |
| 1692 | arm_resp->buffer_length = 0; |
| 1693 | } |
| 1694 | req->file_info = fi; |
| 1695 | req->req.type = RAW1394_REQ_ARM; |
| 1696 | req->req.generation = get_hpsb_generation(host); |
| 1697 | req->req.misc = ((((sizeof(*store)) << 16) & (0xFFFF0000)) | |
| 1698 | (ARM_LOCK & 0xFF)); |
| 1699 | req->req.tag = arm_addr->arm_tag; |
| 1700 | req->req.recvb = arm_addr->recvb; |
| 1701 | req->req.length = size; |
| 1702 | arm_req->generation = req->req.generation; |
| 1703 | arm_req->extended_transaction_code = ext_tcode; |
| 1704 | arm_req->destination_offset = addr; |
| 1705 | arm_req->source_nodeid = nodeid; |
| 1706 | arm_req->destination_nodeid = host->node_id; |
| 1707 | arm_req->tlabel = (flags >> 10) & 0x3f; |
| 1708 | arm_req->tcode = (flags >> 4) & 0x0f; |
| 1709 | arm_resp->response_code = rcode; |
| 1710 | arm_req_resp->request = int2ptr((arm_addr->recvb) + |
| 1711 | sizeof(struct |
| 1712 | arm_request_response)); |
| 1713 | arm_req_resp->response = |
| 1714 | int2ptr((arm_addr->recvb) + |
| 1715 | sizeof(struct arm_request_response) + |
| 1716 | sizeof(struct arm_request)); |
| 1717 | arm_req->buffer = |
| 1718 | int2ptr((arm_addr->recvb) + |
| 1719 | sizeof(struct arm_request_response) + |
| 1720 | sizeof(struct arm_request) + |
| 1721 | sizeof(struct arm_response)); |
| 1722 | arm_resp->buffer = |
| 1723 | int2ptr((arm_addr->recvb) + |
| 1724 | sizeof(struct arm_request_response) + |
| 1725 | sizeof(struct arm_request) + |
| 1726 | sizeof(struct arm_response) + 2 * sizeof(*store)); |
| 1727 | queue_complete_req(req); |
| 1728 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1729 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1730 | return (rcode); |
| 1731 | } |
| 1732 | |
| 1733 | static int arm_register(struct file_info *fi, struct pending_request *req) |
| 1734 | { |
| 1735 | int retval; |
| 1736 | struct arm_addr *addr; |
| 1737 | struct host_info *hi; |
| 1738 | struct file_info *fi_hlp = NULL; |
| 1739 | struct list_head *entry; |
| 1740 | struct arm_addr *arm_addr = NULL; |
| 1741 | int same_host, another_host; |
| 1742 | unsigned long flags; |
| 1743 | |
| 1744 | DBGMSG("arm_register called " |
| 1745 | "addr(Offset): %8.8x %8.8x length: %u " |
| 1746 | "rights: %2.2X notify: %2.2X " |
| 1747 | "max_blk_len: %4.4X", |
| 1748 | (u32) ((req->req.address >> 32) & 0xFFFF), |
| 1749 | (u32) (req->req.address & 0xFFFFFFFF), |
| 1750 | req->req.length, ((req->req.misc >> 8) & 0xFF), |
| 1751 | (req->req.misc & 0xFF), ((req->req.misc >> 16) & 0xFFFF)); |
| 1752 | /* check addressrange */ |
| 1753 | if ((((req->req.address) & ~(0xFFFFFFFFFFFFULL)) != 0) || |
| 1754 | (((req->req.address + req->req.length) & ~(0xFFFFFFFFFFFFULL)) != |
| 1755 | 0)) { |
| 1756 | req->req.length = 0; |
| 1757 | return (-EINVAL); |
| 1758 | } |
| 1759 | /* addr-list-entry for fileinfo */ |
Christoph Lameter | e94b176 | 2006-12-06 20:33:17 -0800 | [diff] [blame] | 1760 | addr = kmalloc(sizeof(*addr), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1761 | if (!addr) { |
| 1762 | req->req.length = 0; |
| 1763 | return (-ENOMEM); |
| 1764 | } |
| 1765 | /* allocation of addr_space_buffer */ |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 1766 | addr->addr_space_buffer = vmalloc(req->req.length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1767 | if (!(addr->addr_space_buffer)) { |
| 1768 | kfree(addr); |
| 1769 | req->req.length = 0; |
| 1770 | return (-ENOMEM); |
| 1771 | } |
| 1772 | /* initialization of addr_space_buffer */ |
| 1773 | if ((req->req.sendb) == (unsigned long)NULL) { |
| 1774 | /* init: set 0 */ |
| 1775 | memset(addr->addr_space_buffer, 0, req->req.length); |
| 1776 | } else { |
| 1777 | /* init: user -> kernel */ |
| 1778 | if (copy_from_user |
| 1779 | (addr->addr_space_buffer, int2ptr(req->req.sendb), |
| 1780 | req->req.length)) { |
| 1781 | vfree(addr->addr_space_buffer); |
| 1782 | kfree(addr); |
| 1783 | return (-EFAULT); |
| 1784 | } |
| 1785 | } |
| 1786 | INIT_LIST_HEAD(&addr->addr_list); |
| 1787 | addr->arm_tag = req->req.tag; |
| 1788 | addr->start = req->req.address; |
| 1789 | addr->end = req->req.address + req->req.length; |
| 1790 | addr->access_rights = (u8) (req->req.misc & 0x0F); |
| 1791 | addr->notification_options = (u8) ((req->req.misc >> 4) & 0x0F); |
| 1792 | addr->client_transactions = (u8) ((req->req.misc >> 8) & 0x0F); |
| 1793 | addr->access_rights |= addr->client_transactions; |
| 1794 | addr->notification_options |= addr->client_transactions; |
| 1795 | addr->recvb = req->req.recvb; |
| 1796 | addr->rec_length = (u16) ((req->req.misc >> 16) & 0xFFFF); |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 1797 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1798 | spin_lock_irqsave(&host_info_lock, flags); |
| 1799 | hi = find_host_info(fi->host); |
| 1800 | same_host = 0; |
| 1801 | another_host = 0; |
| 1802 | /* same host with address-entry containing same addressrange ? */ |
| 1803 | list_for_each_entry(fi_hlp, &hi->file_info_list, list) { |
| 1804 | entry = fi_hlp->addr_list.next; |
| 1805 | while (entry != &(fi_hlp->addr_list)) { |
| 1806 | arm_addr = |
| 1807 | list_entry(entry, struct arm_addr, addr_list); |
| 1808 | if ((arm_addr->start == addr->start) |
| 1809 | && (arm_addr->end == addr->end)) { |
| 1810 | DBGMSG("same host ownes same " |
| 1811 | "addressrange -> EALREADY"); |
| 1812 | same_host = 1; |
| 1813 | break; |
| 1814 | } |
| 1815 | entry = entry->next; |
| 1816 | } |
| 1817 | if (same_host) { |
| 1818 | break; |
| 1819 | } |
| 1820 | } |
| 1821 | if (same_host) { |
| 1822 | /* addressrange occupied by same host */ |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 1823 | spin_unlock_irqrestore(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1824 | vfree(addr->addr_space_buffer); |
| 1825 | kfree(addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1826 | return (-EALREADY); |
| 1827 | } |
| 1828 | /* another host with valid address-entry containing same addressrange */ |
| 1829 | list_for_each_entry(hi, &host_info_list, list) { |
| 1830 | if (hi->host != fi->host) { |
| 1831 | list_for_each_entry(fi_hlp, &hi->file_info_list, list) { |
| 1832 | entry = fi_hlp->addr_list.next; |
| 1833 | while (entry != &(fi_hlp->addr_list)) { |
| 1834 | arm_addr = |
| 1835 | list_entry(entry, struct arm_addr, |
| 1836 | addr_list); |
| 1837 | if ((arm_addr->start == addr->start) |
| 1838 | && (arm_addr->end == addr->end)) { |
| 1839 | DBGMSG |
| 1840 | ("another host ownes same " |
| 1841 | "addressrange"); |
| 1842 | another_host = 1; |
| 1843 | break; |
| 1844 | } |
| 1845 | entry = entry->next; |
| 1846 | } |
| 1847 | if (another_host) { |
| 1848 | break; |
| 1849 | } |
| 1850 | } |
| 1851 | } |
| 1852 | } |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 1853 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1854 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1855 | if (another_host) { |
| 1856 | DBGMSG("another hosts entry is valid -> SUCCESS"); |
| 1857 | if (copy_to_user(int2ptr(req->req.recvb), |
| 1858 | &addr->start, sizeof(u64))) { |
| 1859 | printk(KERN_ERR "raw1394: arm_register failed " |
| 1860 | " address-range-entry is invalid -> EFAULT !!!\n"); |
| 1861 | vfree(addr->addr_space_buffer); |
| 1862 | kfree(addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1863 | return (-EFAULT); |
| 1864 | } |
| 1865 | free_pending_request(req); /* immediate success or fail */ |
| 1866 | /* INSERT ENTRY */ |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 1867 | spin_lock_irqsave(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1868 | list_add_tail(&addr->addr_list, &fi->addr_list); |
| 1869 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1870 | return sizeof(struct raw1394_request); |
| 1871 | } |
| 1872 | retval = |
| 1873 | hpsb_register_addrspace(&raw1394_highlevel, fi->host, &arm_ops, |
| 1874 | req->req.address, |
| 1875 | req->req.address + req->req.length); |
| 1876 | if (retval) { |
| 1877 | /* INSERT ENTRY */ |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 1878 | spin_lock_irqsave(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1879 | list_add_tail(&addr->addr_list, &fi->addr_list); |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 1880 | spin_unlock_irqrestore(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1881 | } else { |
| 1882 | DBGMSG("arm_register failed errno: %d \n", retval); |
| 1883 | vfree(addr->addr_space_buffer); |
| 1884 | kfree(addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1885 | return (-EALREADY); |
| 1886 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1887 | free_pending_request(req); /* immediate success or fail */ |
| 1888 | return sizeof(struct raw1394_request); |
| 1889 | } |
| 1890 | |
| 1891 | static int arm_unregister(struct file_info *fi, struct pending_request *req) |
| 1892 | { |
| 1893 | int found = 0; |
| 1894 | int retval = 0; |
| 1895 | struct list_head *entry; |
| 1896 | struct arm_addr *addr = NULL; |
| 1897 | struct host_info *hi; |
| 1898 | struct file_info *fi_hlp = NULL; |
| 1899 | struct arm_addr *arm_addr = NULL; |
| 1900 | int another_host; |
| 1901 | unsigned long flags; |
| 1902 | |
| 1903 | DBGMSG("arm_Unregister called addr(Offset): " |
| 1904 | "%8.8x %8.8x", |
| 1905 | (u32) ((req->req.address >> 32) & 0xFFFF), |
| 1906 | (u32) (req->req.address & 0xFFFFFFFF)); |
| 1907 | spin_lock_irqsave(&host_info_lock, flags); |
| 1908 | /* get addr */ |
| 1909 | entry = fi->addr_list.next; |
| 1910 | while (entry != &(fi->addr_list)) { |
| 1911 | addr = list_entry(entry, struct arm_addr, addr_list); |
| 1912 | if (addr->start == req->req.address) { |
| 1913 | found = 1; |
| 1914 | break; |
| 1915 | } |
| 1916 | entry = entry->next; |
| 1917 | } |
| 1918 | if (!found) { |
| 1919 | DBGMSG("arm_Unregister addr not found"); |
| 1920 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1921 | return (-EINVAL); |
| 1922 | } |
| 1923 | DBGMSG("arm_Unregister addr found"); |
| 1924 | another_host = 0; |
| 1925 | /* another host with valid address-entry containing |
| 1926 | same addressrange */ |
| 1927 | list_for_each_entry(hi, &host_info_list, list) { |
| 1928 | if (hi->host != fi->host) { |
| 1929 | list_for_each_entry(fi_hlp, &hi->file_info_list, list) { |
| 1930 | entry = fi_hlp->addr_list.next; |
| 1931 | while (entry != &(fi_hlp->addr_list)) { |
| 1932 | arm_addr = list_entry(entry, |
| 1933 | struct arm_addr, |
| 1934 | addr_list); |
| 1935 | if (arm_addr->start == addr->start) { |
| 1936 | DBGMSG("another host ownes " |
| 1937 | "same addressrange"); |
| 1938 | another_host = 1; |
| 1939 | break; |
| 1940 | } |
| 1941 | entry = entry->next; |
| 1942 | } |
| 1943 | if (another_host) { |
| 1944 | break; |
| 1945 | } |
| 1946 | } |
| 1947 | } |
| 1948 | } |
| 1949 | if (another_host) { |
| 1950 | DBGMSG("delete entry from list -> success"); |
| 1951 | list_del(&addr->addr_list); |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 1952 | spin_unlock_irqrestore(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1953 | vfree(addr->addr_space_buffer); |
| 1954 | kfree(addr); |
| 1955 | free_pending_request(req); /* immediate success or fail */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1956 | return sizeof(struct raw1394_request); |
| 1957 | } |
| 1958 | retval = |
| 1959 | hpsb_unregister_addrspace(&raw1394_highlevel, fi->host, |
| 1960 | addr->start); |
| 1961 | if (!retval) { |
| 1962 | printk(KERN_ERR "raw1394: arm_Unregister failed -> EINVAL\n"); |
| 1963 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1964 | return (-EINVAL); |
| 1965 | } |
| 1966 | DBGMSG("delete entry from list -> success"); |
| 1967 | list_del(&addr->addr_list); |
| 1968 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1969 | vfree(addr->addr_space_buffer); |
| 1970 | kfree(addr); |
| 1971 | free_pending_request(req); /* immediate success or fail */ |
| 1972 | return sizeof(struct raw1394_request); |
| 1973 | } |
| 1974 | |
| 1975 | /* Copy data from ARM buffer(s) to user buffer. */ |
| 1976 | static int arm_get_buf(struct file_info *fi, struct pending_request *req) |
| 1977 | { |
| 1978 | struct arm_addr *arm_addr = NULL; |
| 1979 | unsigned long flags; |
| 1980 | unsigned long offset; |
| 1981 | |
| 1982 | struct list_head *entry; |
| 1983 | |
| 1984 | DBGMSG("arm_get_buf " |
| 1985 | "addr(Offset): %04X %08X length: %u", |
| 1986 | (u32) ((req->req.address >> 32) & 0xFFFF), |
| 1987 | (u32) (req->req.address & 0xFFFFFFFF), (u32) req->req.length); |
| 1988 | |
| 1989 | spin_lock_irqsave(&host_info_lock, flags); |
| 1990 | entry = fi->addr_list.next; |
| 1991 | while (entry != &(fi->addr_list)) { |
| 1992 | arm_addr = list_entry(entry, struct arm_addr, addr_list); |
| 1993 | if ((arm_addr->start <= req->req.address) && |
| 1994 | (arm_addr->end > req->req.address)) { |
| 1995 | if (req->req.address + req->req.length <= arm_addr->end) { |
| 1996 | offset = req->req.address - arm_addr->start; |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 1997 | spin_unlock_irqrestore(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1998 | |
| 1999 | DBGMSG |
| 2000 | ("arm_get_buf copy_to_user( %08X, %p, %u )", |
| 2001 | (u32) req->req.recvb, |
| 2002 | arm_addr->addr_space_buffer + offset, |
| 2003 | (u32) req->req.length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2004 | if (copy_to_user |
| 2005 | (int2ptr(req->req.recvb), |
| 2006 | arm_addr->addr_space_buffer + offset, |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 2007 | req->req.length)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2008 | return (-EFAULT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2009 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2010 | /* We have to free the request, because we |
| 2011 | * queue no response, and therefore nobody |
| 2012 | * will free it. */ |
| 2013 | free_pending_request(req); |
| 2014 | return sizeof(struct raw1394_request); |
| 2015 | } else { |
| 2016 | DBGMSG("arm_get_buf request exceeded mapping"); |
| 2017 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 2018 | return (-EINVAL); |
| 2019 | } |
| 2020 | } |
| 2021 | entry = entry->next; |
| 2022 | } |
| 2023 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 2024 | return (-EINVAL); |
| 2025 | } |
| 2026 | |
| 2027 | /* Copy data from user buffer to ARM buffer(s). */ |
| 2028 | static int arm_set_buf(struct file_info *fi, struct pending_request *req) |
| 2029 | { |
| 2030 | struct arm_addr *arm_addr = NULL; |
| 2031 | unsigned long flags; |
| 2032 | unsigned long offset; |
| 2033 | |
| 2034 | struct list_head *entry; |
| 2035 | |
| 2036 | DBGMSG("arm_set_buf " |
| 2037 | "addr(Offset): %04X %08X length: %u", |
| 2038 | (u32) ((req->req.address >> 32) & 0xFFFF), |
| 2039 | (u32) (req->req.address & 0xFFFFFFFF), (u32) req->req.length); |
| 2040 | |
| 2041 | spin_lock_irqsave(&host_info_lock, flags); |
| 2042 | entry = fi->addr_list.next; |
| 2043 | while (entry != &(fi->addr_list)) { |
| 2044 | arm_addr = list_entry(entry, struct arm_addr, addr_list); |
| 2045 | if ((arm_addr->start <= req->req.address) && |
| 2046 | (arm_addr->end > req->req.address)) { |
| 2047 | if (req->req.address + req->req.length <= arm_addr->end) { |
| 2048 | offset = req->req.address - arm_addr->start; |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 2049 | spin_unlock_irqrestore(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2050 | |
| 2051 | DBGMSG |
| 2052 | ("arm_set_buf copy_from_user( %p, %08X, %u )", |
| 2053 | arm_addr->addr_space_buffer + offset, |
| 2054 | (u32) req->req.sendb, |
| 2055 | (u32) req->req.length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2056 | if (copy_from_user |
| 2057 | (arm_addr->addr_space_buffer + offset, |
| 2058 | int2ptr(req->req.sendb), |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 2059 | req->req.length)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2060 | return (-EFAULT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2061 | |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 2062 | /* We have to free the request, because we |
| 2063 | * queue no response, and therefore nobody |
| 2064 | * will free it. */ |
| 2065 | free_pending_request(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2066 | return sizeof(struct raw1394_request); |
| 2067 | } else { |
| 2068 | DBGMSG("arm_set_buf request exceeded mapping"); |
| 2069 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 2070 | return (-EINVAL); |
| 2071 | } |
| 2072 | } |
| 2073 | entry = entry->next; |
| 2074 | } |
| 2075 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 2076 | return (-EINVAL); |
| 2077 | } |
| 2078 | |
| 2079 | static int reset_notification(struct file_info *fi, struct pending_request *req) |
| 2080 | { |
| 2081 | DBGMSG("reset_notification called - switch %s ", |
| 2082 | (req->req.misc == RAW1394_NOTIFY_OFF) ? "OFF" : "ON"); |
| 2083 | if ((req->req.misc == RAW1394_NOTIFY_OFF) || |
| 2084 | (req->req.misc == RAW1394_NOTIFY_ON)) { |
| 2085 | fi->notification = (u8) req->req.misc; |
| 2086 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ |
| 2087 | return sizeof(struct raw1394_request); |
| 2088 | } |
| 2089 | /* error EINVAL (22) invalid argument */ |
| 2090 | return (-EINVAL); |
| 2091 | } |
| 2092 | |
| 2093 | static int write_phypacket(struct file_info *fi, struct pending_request *req) |
| 2094 | { |
| 2095 | struct hpsb_packet *packet = NULL; |
| 2096 | int retval = 0; |
| 2097 | quadlet_t data; |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2098 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2099 | |
| 2100 | data = be32_to_cpu((u32) req->req.sendb); |
| 2101 | DBGMSG("write_phypacket called - quadlet 0x%8.8x ", data); |
| 2102 | packet = hpsb_make_phypacket(fi->host, data); |
| 2103 | if (!packet) |
| 2104 | return -ENOMEM; |
| 2105 | req->req.length = 0; |
| 2106 | req->packet = packet; |
| 2107 | hpsb_set_packet_complete_task(packet, |
| 2108 | (void (*)(void *))queue_complete_cb, req); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2109 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2110 | list_add_tail(&req->list, &fi->req_pending); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2111 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2112 | packet->generation = req->req.generation; |
| 2113 | retval = hpsb_send_packet(packet); |
| 2114 | DBGMSG("write_phypacket send_packet called => retval: %d ", retval); |
| 2115 | if (retval < 0) { |
| 2116 | req->req.error = RAW1394_ERROR_SEND_ERROR; |
| 2117 | req->req.length = 0; |
| 2118 | queue_complete_req(req); |
| 2119 | } |
| 2120 | return sizeof(struct raw1394_request); |
| 2121 | } |
| 2122 | |
| 2123 | static int get_config_rom(struct file_info *fi, struct pending_request *req) |
| 2124 | { |
| 2125 | int ret = sizeof(struct raw1394_request); |
Christoph Lameter | e94b176 | 2006-12-06 20:33:17 -0800 | [diff] [blame] | 2126 | quadlet_t *data = kmalloc(req->req.length, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2127 | int status; |
| 2128 | |
| 2129 | if (!data) |
| 2130 | return -ENOMEM; |
| 2131 | |
| 2132 | status = |
| 2133 | csr1212_read(fi->host->csr.rom, CSR1212_CONFIG_ROM_SPACE_OFFSET, |
| 2134 | data, req->req.length); |
| 2135 | if (copy_to_user(int2ptr(req->req.recvb), data, req->req.length)) |
| 2136 | ret = -EFAULT; |
| 2137 | if (copy_to_user |
| 2138 | (int2ptr(req->req.tag), &fi->host->csr.rom->cache_head->len, |
| 2139 | sizeof(fi->host->csr.rom->cache_head->len))) |
| 2140 | ret = -EFAULT; |
| 2141 | if (copy_to_user(int2ptr(req->req.address), &fi->host->csr.generation, |
| 2142 | sizeof(fi->host->csr.generation))) |
| 2143 | ret = -EFAULT; |
| 2144 | if (copy_to_user(int2ptr(req->req.sendb), &status, sizeof(status))) |
| 2145 | ret = -EFAULT; |
| 2146 | kfree(data); |
| 2147 | if (ret >= 0) { |
| 2148 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ |
| 2149 | } |
| 2150 | return ret; |
| 2151 | } |
| 2152 | |
| 2153 | static int update_config_rom(struct file_info *fi, struct pending_request *req) |
| 2154 | { |
| 2155 | int ret = sizeof(struct raw1394_request); |
Christoph Lameter | e94b176 | 2006-12-06 20:33:17 -0800 | [diff] [blame] | 2156 | quadlet_t *data = kmalloc(req->req.length, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2157 | if (!data) |
| 2158 | return -ENOMEM; |
| 2159 | if (copy_from_user(data, int2ptr(req->req.sendb), req->req.length)) { |
| 2160 | ret = -EFAULT; |
| 2161 | } else { |
| 2162 | int status = hpsb_update_config_rom(fi->host, |
| 2163 | data, req->req.length, |
| 2164 | (unsigned char)req->req. |
| 2165 | misc); |
| 2166 | if (copy_to_user |
| 2167 | (int2ptr(req->req.recvb), &status, sizeof(status))) |
| 2168 | ret = -ENOMEM; |
| 2169 | } |
| 2170 | kfree(data); |
| 2171 | if (ret >= 0) { |
| 2172 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ |
| 2173 | fi->cfgrom_upd = 1; |
| 2174 | } |
| 2175 | return ret; |
| 2176 | } |
| 2177 | |
| 2178 | static int modify_config_rom(struct file_info *fi, struct pending_request *req) |
| 2179 | { |
| 2180 | struct csr1212_keyval *kv; |
| 2181 | struct csr1212_csr_rom_cache *cache; |
| 2182 | struct csr1212_dentry *dentry; |
| 2183 | u32 dr; |
| 2184 | int ret = 0; |
| 2185 | |
| 2186 | if (req->req.misc == ~0) { |
| 2187 | if (req->req.length == 0) |
| 2188 | return -EINVAL; |
| 2189 | |
| 2190 | /* Find an unused slot */ |
| 2191 | for (dr = 0; |
| 2192 | dr < RAW1394_MAX_USER_CSR_DIRS && fi->csr1212_dirs[dr]; |
| 2193 | dr++) ; |
| 2194 | |
| 2195 | if (dr == RAW1394_MAX_USER_CSR_DIRS) |
| 2196 | return -ENOMEM; |
| 2197 | |
| 2198 | fi->csr1212_dirs[dr] = |
| 2199 | csr1212_new_directory(CSR1212_KV_ID_VENDOR); |
| 2200 | if (!fi->csr1212_dirs[dr]) |
| 2201 | return -ENOMEM; |
| 2202 | } else { |
| 2203 | dr = req->req.misc; |
| 2204 | if (!fi->csr1212_dirs[dr]) |
| 2205 | return -EINVAL; |
| 2206 | |
| 2207 | /* Delete old stuff */ |
| 2208 | for (dentry = |
| 2209 | fi->csr1212_dirs[dr]->value.directory.dentries_head; |
| 2210 | dentry; dentry = dentry->next) { |
| 2211 | csr1212_detach_keyval_from_directory(fi->host->csr.rom-> |
| 2212 | root_kv, |
| 2213 | dentry->kv); |
| 2214 | } |
| 2215 | |
| 2216 | if (req->req.length == 0) { |
| 2217 | csr1212_release_keyval(fi->csr1212_dirs[dr]); |
| 2218 | fi->csr1212_dirs[dr] = NULL; |
| 2219 | |
| 2220 | hpsb_update_config_rom_image(fi->host); |
| 2221 | free_pending_request(req); |
| 2222 | return sizeof(struct raw1394_request); |
| 2223 | } |
| 2224 | } |
| 2225 | |
| 2226 | cache = csr1212_rom_cache_malloc(0, req->req.length); |
| 2227 | if (!cache) { |
| 2228 | csr1212_release_keyval(fi->csr1212_dirs[dr]); |
| 2229 | fi->csr1212_dirs[dr] = NULL; |
| 2230 | return -ENOMEM; |
| 2231 | } |
| 2232 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 2233 | cache->filled_head = kmalloc(sizeof(*cache->filled_head), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2234 | if (!cache->filled_head) { |
| 2235 | csr1212_release_keyval(fi->csr1212_dirs[dr]); |
| 2236 | fi->csr1212_dirs[dr] = NULL; |
| 2237 | CSR1212_FREE(cache); |
| 2238 | return -ENOMEM; |
| 2239 | } |
| 2240 | cache->filled_tail = cache->filled_head; |
| 2241 | |
| 2242 | if (copy_from_user(cache->data, int2ptr(req->req.sendb), |
| 2243 | req->req.length)) { |
| 2244 | csr1212_release_keyval(fi->csr1212_dirs[dr]); |
| 2245 | fi->csr1212_dirs[dr] = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2246 | ret = -EFAULT; |
| 2247 | } else { |
| 2248 | cache->len = req->req.length; |
| 2249 | cache->filled_head->offset_start = 0; |
| 2250 | cache->filled_head->offset_end = cache->size - 1; |
| 2251 | |
| 2252 | cache->layout_head = cache->layout_tail = fi->csr1212_dirs[dr]; |
| 2253 | |
| 2254 | ret = CSR1212_SUCCESS; |
| 2255 | /* parse all the items */ |
| 2256 | for (kv = cache->layout_head; ret == CSR1212_SUCCESS && kv; |
| 2257 | kv = kv->next) { |
| 2258 | ret = csr1212_parse_keyval(kv, cache); |
| 2259 | } |
| 2260 | |
| 2261 | /* attach top level items to the root directory */ |
| 2262 | for (dentry = |
| 2263 | fi->csr1212_dirs[dr]->value.directory.dentries_head; |
| 2264 | ret == CSR1212_SUCCESS && dentry; dentry = dentry->next) { |
| 2265 | ret = |
| 2266 | csr1212_attach_keyval_to_directory(fi->host->csr. |
| 2267 | rom->root_kv, |
| 2268 | dentry->kv); |
| 2269 | } |
| 2270 | |
| 2271 | if (ret == CSR1212_SUCCESS) { |
| 2272 | ret = hpsb_update_config_rom_image(fi->host); |
| 2273 | |
| 2274 | if (ret >= 0 && copy_to_user(int2ptr(req->req.recvb), |
| 2275 | &dr, sizeof(dr))) { |
| 2276 | ret = -ENOMEM; |
| 2277 | } |
| 2278 | } |
| 2279 | } |
| 2280 | kfree(cache->filled_head); |
Stefan Richter | b12479d | 2005-11-21 17:32:18 -0500 | [diff] [blame] | 2281 | CSR1212_FREE(cache); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2282 | |
| 2283 | if (ret >= 0) { |
| 2284 | /* we have to free the request, because we queue no response, |
| 2285 | * and therefore nobody will free it */ |
| 2286 | free_pending_request(req); |
| 2287 | return sizeof(struct raw1394_request); |
| 2288 | } else { |
| 2289 | for (dentry = |
| 2290 | fi->csr1212_dirs[dr]->value.directory.dentries_head; |
| 2291 | dentry; dentry = dentry->next) { |
| 2292 | csr1212_detach_keyval_from_directory(fi->host->csr.rom-> |
| 2293 | root_kv, |
| 2294 | dentry->kv); |
| 2295 | } |
| 2296 | csr1212_release_keyval(fi->csr1212_dirs[dr]); |
| 2297 | fi->csr1212_dirs[dr] = NULL; |
| 2298 | return ret; |
| 2299 | } |
| 2300 | } |
| 2301 | |
| 2302 | static int state_connected(struct file_info *fi, struct pending_request *req) |
| 2303 | { |
| 2304 | int node = req->req.address >> 48; |
| 2305 | |
| 2306 | req->req.error = RAW1394_ERROR_NONE; |
| 2307 | |
| 2308 | switch (req->req.type) { |
| 2309 | |
| 2310 | case RAW1394_REQ_ECHO: |
| 2311 | queue_complete_req(req); |
| 2312 | return sizeof(struct raw1394_request); |
| 2313 | |
| 2314 | case RAW1394_REQ_ISO_SEND: |
Stefan Richter | 9868e0e | 2006-11-20 00:05:05 +0100 | [diff] [blame] | 2315 | print_old_iso_deprecation(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2316 | return handle_iso_send(fi, req, node); |
| 2317 | |
| 2318 | case RAW1394_REQ_ARM_REGISTER: |
| 2319 | return arm_register(fi, req); |
| 2320 | |
| 2321 | case RAW1394_REQ_ARM_UNREGISTER: |
| 2322 | return arm_unregister(fi, req); |
| 2323 | |
| 2324 | case RAW1394_REQ_ARM_SET_BUF: |
| 2325 | return arm_set_buf(fi, req); |
| 2326 | |
| 2327 | case RAW1394_REQ_ARM_GET_BUF: |
| 2328 | return arm_get_buf(fi, req); |
| 2329 | |
| 2330 | case RAW1394_REQ_RESET_NOTIFY: |
| 2331 | return reset_notification(fi, req); |
| 2332 | |
| 2333 | case RAW1394_REQ_ISO_LISTEN: |
Stefan Richter | 9868e0e | 2006-11-20 00:05:05 +0100 | [diff] [blame] | 2334 | print_old_iso_deprecation(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2335 | handle_iso_listen(fi, req); |
| 2336 | return sizeof(struct raw1394_request); |
| 2337 | |
| 2338 | case RAW1394_REQ_FCP_LISTEN: |
| 2339 | handle_fcp_listen(fi, req); |
| 2340 | return sizeof(struct raw1394_request); |
| 2341 | |
| 2342 | case RAW1394_REQ_RESET_BUS: |
| 2343 | if (req->req.misc == RAW1394_LONG_RESET) { |
| 2344 | DBGMSG("busreset called (type: LONG)"); |
| 2345 | hpsb_reset_bus(fi->host, LONG_RESET); |
| 2346 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ |
| 2347 | return sizeof(struct raw1394_request); |
| 2348 | } |
| 2349 | if (req->req.misc == RAW1394_SHORT_RESET) { |
| 2350 | DBGMSG("busreset called (type: SHORT)"); |
| 2351 | hpsb_reset_bus(fi->host, SHORT_RESET); |
| 2352 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ |
| 2353 | return sizeof(struct raw1394_request); |
| 2354 | } |
| 2355 | /* error EINVAL (22) invalid argument */ |
| 2356 | return (-EINVAL); |
| 2357 | case RAW1394_REQ_GET_ROM: |
| 2358 | return get_config_rom(fi, req); |
| 2359 | |
| 2360 | case RAW1394_REQ_UPDATE_ROM: |
| 2361 | return update_config_rom(fi, req); |
| 2362 | |
| 2363 | case RAW1394_REQ_MODIFY_ROM: |
| 2364 | return modify_config_rom(fi, req); |
| 2365 | } |
| 2366 | |
| 2367 | if (req->req.generation != get_hpsb_generation(fi->host)) { |
| 2368 | req->req.error = RAW1394_ERROR_GENERATION; |
| 2369 | req->req.generation = get_hpsb_generation(fi->host); |
| 2370 | req->req.length = 0; |
| 2371 | queue_complete_req(req); |
| 2372 | return sizeof(struct raw1394_request); |
| 2373 | } |
| 2374 | |
| 2375 | switch (req->req.type) { |
| 2376 | case RAW1394_REQ_PHYPACKET: |
| 2377 | return write_phypacket(fi, req); |
| 2378 | case RAW1394_REQ_ASYNC_SEND: |
| 2379 | return handle_async_send(fi, req); |
| 2380 | } |
| 2381 | |
| 2382 | if (req->req.length == 0) { |
| 2383 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 2384 | queue_complete_req(req); |
| 2385 | return sizeof(struct raw1394_request); |
| 2386 | } |
| 2387 | |
| 2388 | return handle_async_request(fi, req, node); |
| 2389 | } |
| 2390 | |
| 2391 | static ssize_t raw1394_write(struct file *file, const char __user * buffer, |
| 2392 | size_t count, loff_t * offset_is_ignored) |
| 2393 | { |
| 2394 | struct file_info *fi = (struct file_info *)file->private_data; |
| 2395 | struct pending_request *req; |
| 2396 | ssize_t retval = 0; |
| 2397 | |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 2398 | #ifdef CONFIG_COMPAT |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 2399 | if (count == sizeof(struct compat_raw1394_req) && |
| 2400 | sizeof(struct compat_raw1394_req) != |
| 2401 | sizeof(struct raw1394_request)) { |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 2402 | buffer = raw1394_compat_write(buffer); |
| 2403 | if (IS_ERR(buffer)) |
| 2404 | return PTR_ERR(buffer); |
| 2405 | } else |
| 2406 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2407 | if (count != sizeof(struct raw1394_request)) { |
| 2408 | return -EINVAL; |
| 2409 | } |
| 2410 | |
| 2411 | req = alloc_pending_request(); |
| 2412 | if (req == NULL) { |
| 2413 | return -ENOMEM; |
| 2414 | } |
| 2415 | req->file_info = fi; |
| 2416 | |
| 2417 | if (copy_from_user(&req->req, buffer, sizeof(struct raw1394_request))) { |
| 2418 | free_pending_request(req); |
| 2419 | return -EFAULT; |
| 2420 | } |
| 2421 | |
| 2422 | switch (fi->state) { |
| 2423 | case opened: |
| 2424 | retval = state_opened(fi, req); |
| 2425 | break; |
| 2426 | |
| 2427 | case initialized: |
| 2428 | retval = state_initialized(fi, req); |
| 2429 | break; |
| 2430 | |
| 2431 | case connected: |
| 2432 | retval = state_connected(fi, req); |
| 2433 | break; |
| 2434 | } |
| 2435 | |
| 2436 | if (retval < 0) { |
| 2437 | free_pending_request(req); |
| 2438 | } |
| 2439 | |
| 2440 | return retval; |
| 2441 | } |
| 2442 | |
| 2443 | /* rawiso operations */ |
| 2444 | |
| 2445 | /* check if any RAW1394_REQ_RAWISO_ACTIVITY event is already in the |
| 2446 | * completion queue (reqlists_lock must be taken) */ |
| 2447 | static inline int __rawiso_event_in_queue(struct file_info *fi) |
| 2448 | { |
| 2449 | struct pending_request *req; |
| 2450 | |
| 2451 | list_for_each_entry(req, &fi->req_complete, list) |
| 2452 | if (req->req.type == RAW1394_REQ_RAWISO_ACTIVITY) |
| 2453 | return 1; |
| 2454 | |
| 2455 | return 0; |
| 2456 | } |
| 2457 | |
| 2458 | /* put a RAWISO_ACTIVITY event in the queue, if one isn't there already */ |
| 2459 | static void queue_rawiso_event(struct file_info *fi) |
| 2460 | { |
| 2461 | unsigned long flags; |
| 2462 | |
| 2463 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
| 2464 | |
| 2465 | /* only one ISO activity event may be in the queue */ |
| 2466 | if (!__rawiso_event_in_queue(fi)) { |
| 2467 | struct pending_request *req = |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 2468 | __alloc_pending_request(GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2469 | |
| 2470 | if (req) { |
| 2471 | req->file_info = fi; |
| 2472 | req->req.type = RAW1394_REQ_RAWISO_ACTIVITY; |
| 2473 | req->req.generation = get_hpsb_generation(fi->host); |
| 2474 | __queue_complete_req(req); |
| 2475 | } else { |
| 2476 | /* on allocation failure, signal an overflow */ |
| 2477 | if (fi->iso_handle) { |
| 2478 | atomic_inc(&fi->iso_handle->overflows); |
| 2479 | } |
| 2480 | } |
| 2481 | } |
| 2482 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
| 2483 | } |
| 2484 | |
| 2485 | static void rawiso_activity_cb(struct hpsb_iso *iso) |
| 2486 | { |
| 2487 | unsigned long flags; |
| 2488 | struct host_info *hi; |
| 2489 | struct file_info *fi; |
| 2490 | |
| 2491 | spin_lock_irqsave(&host_info_lock, flags); |
| 2492 | hi = find_host_info(iso->host); |
| 2493 | |
| 2494 | if (hi != NULL) { |
| 2495 | list_for_each_entry(fi, &hi->file_info_list, list) { |
| 2496 | if (fi->iso_handle == iso) |
| 2497 | queue_rawiso_event(fi); |
| 2498 | } |
| 2499 | } |
| 2500 | |
| 2501 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 2502 | } |
| 2503 | |
| 2504 | /* helper function - gather all the kernel iso status bits for returning to user-space */ |
| 2505 | static void raw1394_iso_fill_status(struct hpsb_iso *iso, |
| 2506 | struct raw1394_iso_status *stat) |
| 2507 | { |
| 2508 | stat->config.data_buf_size = iso->buf_size; |
| 2509 | stat->config.buf_packets = iso->buf_packets; |
| 2510 | stat->config.channel = iso->channel; |
| 2511 | stat->config.speed = iso->speed; |
| 2512 | stat->config.irq_interval = iso->irq_interval; |
| 2513 | stat->n_packets = hpsb_iso_n_ready(iso); |
| 2514 | stat->overflows = atomic_read(&iso->overflows); |
| 2515 | stat->xmit_cycle = iso->xmit_cycle; |
| 2516 | } |
| 2517 | |
| 2518 | static int raw1394_iso_xmit_init(struct file_info *fi, void __user * uaddr) |
| 2519 | { |
| 2520 | struct raw1394_iso_status stat; |
| 2521 | |
| 2522 | if (!fi->host) |
| 2523 | return -EINVAL; |
| 2524 | |
| 2525 | if (copy_from_user(&stat, uaddr, sizeof(stat))) |
| 2526 | return -EFAULT; |
| 2527 | |
| 2528 | fi->iso_handle = hpsb_iso_xmit_init(fi->host, |
| 2529 | stat.config.data_buf_size, |
| 2530 | stat.config.buf_packets, |
| 2531 | stat.config.channel, |
| 2532 | stat.config.speed, |
| 2533 | stat.config.irq_interval, |
| 2534 | rawiso_activity_cb); |
| 2535 | if (!fi->iso_handle) |
| 2536 | return -ENOMEM; |
| 2537 | |
| 2538 | fi->iso_state = RAW1394_ISO_XMIT; |
| 2539 | |
| 2540 | raw1394_iso_fill_status(fi->iso_handle, &stat); |
| 2541 | if (copy_to_user(uaddr, &stat, sizeof(stat))) |
| 2542 | return -EFAULT; |
| 2543 | |
| 2544 | /* queue an event to get things started */ |
| 2545 | rawiso_activity_cb(fi->iso_handle); |
| 2546 | |
| 2547 | return 0; |
| 2548 | } |
| 2549 | |
| 2550 | static int raw1394_iso_recv_init(struct file_info *fi, void __user * uaddr) |
| 2551 | { |
| 2552 | struct raw1394_iso_status stat; |
| 2553 | |
| 2554 | if (!fi->host) |
| 2555 | return -EINVAL; |
| 2556 | |
| 2557 | if (copy_from_user(&stat, uaddr, sizeof(stat))) |
| 2558 | return -EFAULT; |
| 2559 | |
| 2560 | fi->iso_handle = hpsb_iso_recv_init(fi->host, |
| 2561 | stat.config.data_buf_size, |
| 2562 | stat.config.buf_packets, |
| 2563 | stat.config.channel, |
| 2564 | stat.config.dma_mode, |
| 2565 | stat.config.irq_interval, |
| 2566 | rawiso_activity_cb); |
| 2567 | if (!fi->iso_handle) |
| 2568 | return -ENOMEM; |
| 2569 | |
| 2570 | fi->iso_state = RAW1394_ISO_RECV; |
| 2571 | |
| 2572 | raw1394_iso_fill_status(fi->iso_handle, &stat); |
| 2573 | if (copy_to_user(uaddr, &stat, sizeof(stat))) |
| 2574 | return -EFAULT; |
| 2575 | return 0; |
| 2576 | } |
| 2577 | |
| 2578 | static int raw1394_iso_get_status(struct file_info *fi, void __user * uaddr) |
| 2579 | { |
| 2580 | struct raw1394_iso_status stat; |
| 2581 | struct hpsb_iso *iso = fi->iso_handle; |
| 2582 | |
| 2583 | raw1394_iso_fill_status(fi->iso_handle, &stat); |
| 2584 | if (copy_to_user(uaddr, &stat, sizeof(stat))) |
| 2585 | return -EFAULT; |
| 2586 | |
| 2587 | /* reset overflow counter */ |
| 2588 | atomic_set(&iso->overflows, 0); |
| 2589 | |
| 2590 | return 0; |
| 2591 | } |
| 2592 | |
| 2593 | /* copy N packet_infos out of the ringbuffer into user-supplied array */ |
| 2594 | static int raw1394_iso_recv_packets(struct file_info *fi, void __user * uaddr) |
| 2595 | { |
| 2596 | struct raw1394_iso_packets upackets; |
| 2597 | unsigned int packet = fi->iso_handle->first_packet; |
| 2598 | int i; |
| 2599 | |
| 2600 | if (copy_from_user(&upackets, uaddr, sizeof(upackets))) |
| 2601 | return -EFAULT; |
| 2602 | |
| 2603 | if (upackets.n_packets > hpsb_iso_n_ready(fi->iso_handle)) |
| 2604 | return -EINVAL; |
| 2605 | |
| 2606 | /* ensure user-supplied buffer is accessible and big enough */ |
| 2607 | if (!access_ok(VERIFY_WRITE, upackets.infos, |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 2608 | upackets.n_packets * |
| 2609 | sizeof(struct raw1394_iso_packet_info))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2610 | return -EFAULT; |
| 2611 | |
| 2612 | /* copy the packet_infos out */ |
| 2613 | for (i = 0; i < upackets.n_packets; i++) { |
| 2614 | if (__copy_to_user(&upackets.infos[i], |
| 2615 | &fi->iso_handle->infos[packet], |
| 2616 | sizeof(struct raw1394_iso_packet_info))) |
| 2617 | return -EFAULT; |
| 2618 | |
| 2619 | packet = (packet + 1) % fi->iso_handle->buf_packets; |
| 2620 | } |
| 2621 | |
| 2622 | return 0; |
| 2623 | } |
| 2624 | |
| 2625 | /* copy N packet_infos from user to ringbuffer, and queue them for transmission */ |
| 2626 | static int raw1394_iso_send_packets(struct file_info *fi, void __user * uaddr) |
| 2627 | { |
| 2628 | struct raw1394_iso_packets upackets; |
| 2629 | int i, rv; |
| 2630 | |
| 2631 | if (copy_from_user(&upackets, uaddr, sizeof(upackets))) |
| 2632 | return -EFAULT; |
| 2633 | |
Ben Collins | 1934b8b | 2005-07-09 20:01:23 -0400 | [diff] [blame] | 2634 | if (upackets.n_packets >= fi->iso_handle->buf_packets) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2635 | return -EINVAL; |
| 2636 | |
Ben Collins | 1934b8b | 2005-07-09 20:01:23 -0400 | [diff] [blame] | 2637 | if (upackets.n_packets >= hpsb_iso_n_ready(fi->iso_handle)) |
| 2638 | return -EAGAIN; |
| 2639 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2640 | /* ensure user-supplied buffer is accessible and big enough */ |
| 2641 | if (!access_ok(VERIFY_READ, upackets.infos, |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 2642 | upackets.n_packets * |
| 2643 | sizeof(struct raw1394_iso_packet_info))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2644 | return -EFAULT; |
| 2645 | |
| 2646 | /* copy the infos structs in and queue the packets */ |
| 2647 | for (i = 0; i < upackets.n_packets; i++) { |
| 2648 | struct raw1394_iso_packet_info info; |
| 2649 | |
| 2650 | if (__copy_from_user(&info, &upackets.infos[i], |
| 2651 | sizeof(struct raw1394_iso_packet_info))) |
| 2652 | return -EFAULT; |
| 2653 | |
| 2654 | rv = hpsb_iso_xmit_queue_packet(fi->iso_handle, info.offset, |
| 2655 | info.len, info.tag, info.sy); |
| 2656 | if (rv) |
| 2657 | return rv; |
| 2658 | } |
| 2659 | |
| 2660 | return 0; |
| 2661 | } |
| 2662 | |
| 2663 | static void raw1394_iso_shutdown(struct file_info *fi) |
| 2664 | { |
| 2665 | if (fi->iso_handle) |
| 2666 | hpsb_iso_shutdown(fi->iso_handle); |
| 2667 | |
| 2668 | fi->iso_handle = NULL; |
| 2669 | fi->iso_state = RAW1394_ISO_INACTIVE; |
| 2670 | } |
| 2671 | |
| 2672 | /* mmap the rawiso xmit/recv buffer */ |
| 2673 | static int raw1394_mmap(struct file *file, struct vm_area_struct *vma) |
| 2674 | { |
| 2675 | struct file_info *fi = file->private_data; |
| 2676 | |
| 2677 | if (fi->iso_state == RAW1394_ISO_INACTIVE) |
| 2678 | return -EINVAL; |
| 2679 | |
| 2680 | return dma_region_mmap(&fi->iso_handle->data_buf, file, vma); |
| 2681 | } |
| 2682 | |
| 2683 | /* ioctl is only used for rawiso operations */ |
| 2684 | static int raw1394_ioctl(struct inode *inode, struct file *file, |
| 2685 | unsigned int cmd, unsigned long arg) |
| 2686 | { |
| 2687 | struct file_info *fi = file->private_data; |
| 2688 | void __user *argp = (void __user *)arg; |
| 2689 | |
| 2690 | switch (fi->iso_state) { |
| 2691 | case RAW1394_ISO_INACTIVE: |
| 2692 | switch (cmd) { |
| 2693 | case RAW1394_IOC_ISO_XMIT_INIT: |
| 2694 | return raw1394_iso_xmit_init(fi, argp); |
| 2695 | case RAW1394_IOC_ISO_RECV_INIT: |
| 2696 | return raw1394_iso_recv_init(fi, argp); |
| 2697 | default: |
| 2698 | break; |
| 2699 | } |
| 2700 | break; |
| 2701 | case RAW1394_ISO_RECV: |
| 2702 | switch (cmd) { |
| 2703 | case RAW1394_IOC_ISO_RECV_START:{ |
| 2704 | /* copy args from user-space */ |
| 2705 | int args[3]; |
| 2706 | if (copy_from_user |
| 2707 | (&args[0], argp, sizeof(args))) |
| 2708 | return -EFAULT; |
| 2709 | return hpsb_iso_recv_start(fi->iso_handle, |
| 2710 | args[0], args[1], |
| 2711 | args[2]); |
| 2712 | } |
| 2713 | case RAW1394_IOC_ISO_XMIT_RECV_STOP: |
| 2714 | hpsb_iso_stop(fi->iso_handle); |
| 2715 | return 0; |
| 2716 | case RAW1394_IOC_ISO_RECV_LISTEN_CHANNEL: |
| 2717 | return hpsb_iso_recv_listen_channel(fi->iso_handle, |
| 2718 | arg); |
| 2719 | case RAW1394_IOC_ISO_RECV_UNLISTEN_CHANNEL: |
| 2720 | return hpsb_iso_recv_unlisten_channel(fi->iso_handle, |
| 2721 | arg); |
| 2722 | case RAW1394_IOC_ISO_RECV_SET_CHANNEL_MASK:{ |
| 2723 | /* copy the u64 from user-space */ |
| 2724 | u64 mask; |
| 2725 | if (copy_from_user(&mask, argp, sizeof(mask))) |
| 2726 | return -EFAULT; |
| 2727 | return hpsb_iso_recv_set_channel_mask(fi-> |
| 2728 | iso_handle, |
| 2729 | mask); |
| 2730 | } |
| 2731 | case RAW1394_IOC_ISO_GET_STATUS: |
| 2732 | return raw1394_iso_get_status(fi, argp); |
| 2733 | case RAW1394_IOC_ISO_RECV_PACKETS: |
| 2734 | return raw1394_iso_recv_packets(fi, argp); |
| 2735 | case RAW1394_IOC_ISO_RECV_RELEASE_PACKETS: |
| 2736 | return hpsb_iso_recv_release_packets(fi->iso_handle, |
| 2737 | arg); |
| 2738 | case RAW1394_IOC_ISO_RECV_FLUSH: |
| 2739 | return hpsb_iso_recv_flush(fi->iso_handle); |
| 2740 | case RAW1394_IOC_ISO_SHUTDOWN: |
| 2741 | raw1394_iso_shutdown(fi); |
| 2742 | return 0; |
| 2743 | case RAW1394_IOC_ISO_QUEUE_ACTIVITY: |
| 2744 | queue_rawiso_event(fi); |
| 2745 | return 0; |
| 2746 | } |
| 2747 | break; |
| 2748 | case RAW1394_ISO_XMIT: |
| 2749 | switch (cmd) { |
| 2750 | case RAW1394_IOC_ISO_XMIT_START:{ |
| 2751 | /* copy two ints from user-space */ |
| 2752 | int args[2]; |
| 2753 | if (copy_from_user |
| 2754 | (&args[0], argp, sizeof(args))) |
| 2755 | return -EFAULT; |
| 2756 | return hpsb_iso_xmit_start(fi->iso_handle, |
| 2757 | args[0], args[1]); |
| 2758 | } |
| 2759 | case RAW1394_IOC_ISO_XMIT_SYNC: |
| 2760 | return hpsb_iso_xmit_sync(fi->iso_handle); |
| 2761 | case RAW1394_IOC_ISO_XMIT_RECV_STOP: |
| 2762 | hpsb_iso_stop(fi->iso_handle); |
| 2763 | return 0; |
| 2764 | case RAW1394_IOC_ISO_GET_STATUS: |
| 2765 | return raw1394_iso_get_status(fi, argp); |
| 2766 | case RAW1394_IOC_ISO_XMIT_PACKETS: |
| 2767 | return raw1394_iso_send_packets(fi, argp); |
| 2768 | case RAW1394_IOC_ISO_SHUTDOWN: |
| 2769 | raw1394_iso_shutdown(fi); |
| 2770 | return 0; |
| 2771 | case RAW1394_IOC_ISO_QUEUE_ACTIVITY: |
| 2772 | queue_rawiso_event(fi); |
| 2773 | return 0; |
| 2774 | } |
| 2775 | break; |
| 2776 | default: |
| 2777 | break; |
| 2778 | } |
| 2779 | |
| 2780 | return -EINVAL; |
| 2781 | } |
| 2782 | |
| 2783 | static unsigned int raw1394_poll(struct file *file, poll_table * pt) |
| 2784 | { |
| 2785 | struct file_info *fi = file->private_data; |
| 2786 | unsigned int mask = POLLOUT | POLLWRNORM; |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2787 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2788 | |
Stefan Richter | 45289bf | 2006-07-03 12:02:33 -0400 | [diff] [blame] | 2789 | poll_wait(file, &fi->wait_complete, pt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2790 | |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2791 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2792 | if (!list_empty(&fi->req_complete)) { |
| 2793 | mask |= POLLIN | POLLRDNORM; |
| 2794 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2795 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2796 | |
| 2797 | return mask; |
| 2798 | } |
| 2799 | |
| 2800 | static int raw1394_open(struct inode *inode, struct file *file) |
| 2801 | { |
| 2802 | struct file_info *fi; |
| 2803 | |
Christoph Lameter | e94b176 | 2006-12-06 20:33:17 -0800 | [diff] [blame] | 2804 | fi = kzalloc(sizeof(*fi), GFP_KERNEL); |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 2805 | if (!fi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2806 | return -ENOMEM; |
| 2807 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2808 | fi->notification = (u8) RAW1394_NOTIFY_ON; /* busreset notification */ |
| 2809 | |
| 2810 | INIT_LIST_HEAD(&fi->list); |
| 2811 | fi->state = opened; |
| 2812 | INIT_LIST_HEAD(&fi->req_pending); |
| 2813 | INIT_LIST_HEAD(&fi->req_complete); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2814 | spin_lock_init(&fi->reqlists_lock); |
Stefan Richter | 45289bf | 2006-07-03 12:02:33 -0400 | [diff] [blame] | 2815 | init_waitqueue_head(&fi->wait_complete); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2816 | INIT_LIST_HEAD(&fi->addr_list); |
| 2817 | |
| 2818 | file->private_data = fi; |
| 2819 | |
| 2820 | return 0; |
| 2821 | } |
| 2822 | |
| 2823 | static int raw1394_release(struct inode *inode, struct file *file) |
| 2824 | { |
| 2825 | struct file_info *fi = file->private_data; |
| 2826 | struct list_head *lh; |
| 2827 | struct pending_request *req; |
Stefan Richter | 45289bf | 2006-07-03 12:02:33 -0400 | [diff] [blame] | 2828 | int i, fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2829 | int retval = 0; |
| 2830 | struct list_head *entry; |
| 2831 | struct arm_addr *addr = NULL; |
| 2832 | struct host_info *hi; |
| 2833 | struct file_info *fi_hlp = NULL; |
| 2834 | struct arm_addr *arm_addr = NULL; |
| 2835 | int another_host; |
| 2836 | int csr_mod = 0; |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2837 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2838 | |
| 2839 | if (fi->iso_state != RAW1394_ISO_INACTIVE) |
| 2840 | raw1394_iso_shutdown(fi); |
| 2841 | |
| 2842 | for (i = 0; i < 64; i++) { |
| 2843 | if (fi->listen_channels & (1ULL << i)) { |
| 2844 | hpsb_unlisten_channel(&raw1394_highlevel, fi->host, i); |
| 2845 | } |
| 2846 | } |
| 2847 | |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2848 | spin_lock_irqsave(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2849 | fi->listen_channels = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2850 | |
| 2851 | fail = 0; |
| 2852 | /* set address-entries invalid */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2853 | |
| 2854 | while (!list_empty(&fi->addr_list)) { |
| 2855 | another_host = 0; |
| 2856 | lh = fi->addr_list.next; |
| 2857 | addr = list_entry(lh, struct arm_addr, addr_list); |
| 2858 | /* another host with valid address-entry containing |
| 2859 | same addressrange? */ |
| 2860 | list_for_each_entry(hi, &host_info_list, list) { |
| 2861 | if (hi->host != fi->host) { |
| 2862 | list_for_each_entry(fi_hlp, &hi->file_info_list, |
| 2863 | list) { |
| 2864 | entry = fi_hlp->addr_list.next; |
| 2865 | while (entry != &(fi_hlp->addr_list)) { |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 2866 | arm_addr = list_entry(entry, struct |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2867 | arm_addr, |
| 2868 | addr_list); |
| 2869 | if (arm_addr->start == |
| 2870 | addr->start) { |
| 2871 | DBGMSG |
| 2872 | ("raw1394_release: " |
| 2873 | "another host ownes " |
| 2874 | "same addressrange"); |
| 2875 | another_host = 1; |
| 2876 | break; |
| 2877 | } |
| 2878 | entry = entry->next; |
| 2879 | } |
| 2880 | if (another_host) { |
| 2881 | break; |
| 2882 | } |
| 2883 | } |
| 2884 | } |
| 2885 | } |
| 2886 | if (!another_host) { |
| 2887 | DBGMSG("raw1394_release: call hpsb_arm_unregister"); |
| 2888 | retval = |
| 2889 | hpsb_unregister_addrspace(&raw1394_highlevel, |
| 2890 | fi->host, addr->start); |
| 2891 | if (!retval) { |
| 2892 | ++fail; |
| 2893 | printk(KERN_ERR |
| 2894 | "raw1394_release arm_Unregister failed\n"); |
| 2895 | } |
| 2896 | } |
| 2897 | DBGMSG("raw1394_release: delete addr_entry from list"); |
| 2898 | list_del(&addr->addr_list); |
| 2899 | vfree(addr->addr_space_buffer); |
| 2900 | kfree(addr); |
| 2901 | } /* while */ |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2902 | spin_unlock_irqrestore(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2903 | if (fail > 0) { |
| 2904 | printk(KERN_ERR "raw1394: during addr_list-release " |
| 2905 | "error(s) occurred \n"); |
| 2906 | } |
| 2907 | |
Stefan Richter | 45289bf | 2006-07-03 12:02:33 -0400 | [diff] [blame] | 2908 | for (;;) { |
| 2909 | /* This locked section guarantees that neither |
| 2910 | * complete nor pending requests exist once i!=0 */ |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2911 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
Stefan Richter | 45289bf | 2006-07-03 12:02:33 -0400 | [diff] [blame] | 2912 | while ((req = __next_complete_req(fi))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2913 | free_pending_request(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2914 | |
Stefan Richter | 45289bf | 2006-07-03 12:02:33 -0400 | [diff] [blame] | 2915 | i = list_empty(&fi->req_pending); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2916 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2917 | |
Stefan Richter | 45289bf | 2006-07-03 12:02:33 -0400 | [diff] [blame] | 2918 | if (i) |
| 2919 | break; |
| 2920 | /* |
| 2921 | * Sleep until more requests can be freed. |
| 2922 | * |
| 2923 | * NB: We call the macro wait_event() with a condition argument |
| 2924 | * with side effect. This is only possible because the side |
| 2925 | * effect does not occur until the condition became true, and |
| 2926 | * wait_event() won't evaluate the condition again after that. |
| 2927 | */ |
| 2928 | wait_event(fi->wait_complete, (req = next_complete_req(fi))); |
| 2929 | free_pending_request(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2930 | } |
| 2931 | |
| 2932 | /* Remove any sub-trees left by user space programs */ |
| 2933 | for (i = 0; i < RAW1394_MAX_USER_CSR_DIRS; i++) { |
| 2934 | struct csr1212_dentry *dentry; |
| 2935 | if (!fi->csr1212_dirs[i]) |
| 2936 | continue; |
| 2937 | for (dentry = |
| 2938 | fi->csr1212_dirs[i]->value.directory.dentries_head; dentry; |
| 2939 | dentry = dentry->next) { |
| 2940 | csr1212_detach_keyval_from_directory(fi->host->csr.rom-> |
| 2941 | root_kv, |
| 2942 | dentry->kv); |
| 2943 | } |
| 2944 | csr1212_release_keyval(fi->csr1212_dirs[i]); |
| 2945 | fi->csr1212_dirs[i] = NULL; |
| 2946 | csr_mod = 1; |
| 2947 | } |
| 2948 | |
| 2949 | if ((csr_mod || fi->cfgrom_upd) |
| 2950 | && hpsb_update_config_rom_image(fi->host) < 0) |
| 2951 | HPSB_ERR |
| 2952 | ("Failed to generate Configuration ROM image for host %d", |
| 2953 | fi->host->id); |
| 2954 | |
| 2955 | if (fi->state == connected) { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2956 | spin_lock_irqsave(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2957 | list_del(&fi->list); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2958 | spin_unlock_irqrestore(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2959 | |
| 2960 | put_device(&fi->host->device); |
| 2961 | } |
| 2962 | |
Stefan Richter | 0fe4c6f | 2007-02-03 16:48:51 +0100 | [diff] [blame] | 2963 | spin_lock_irqsave(&host_info_lock, flags); |
| 2964 | if (fi->host) |
| 2965 | module_put(fi->host->driver->owner); |
| 2966 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 2967 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2968 | kfree(fi); |
| 2969 | |
| 2970 | return 0; |
| 2971 | } |
| 2972 | |
| 2973 | /*** HOTPLUG STUFF **********************************************************/ |
| 2974 | /* |
| 2975 | * Export information about protocols/devices supported by this driver. |
| 2976 | */ |
| 2977 | static struct ieee1394_device_id raw1394_id_table[] = { |
| 2978 | { |
| 2979 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, |
| 2980 | .specifier_id = AVC_UNIT_SPEC_ID_ENTRY & 0xffffff, |
| 2981 | .version = AVC_SW_VERSION_ENTRY & 0xffffff}, |
| 2982 | { |
| 2983 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, |
| 2984 | .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, |
| 2985 | .version = CAMERA_SW_VERSION_ENTRY & 0xffffff}, |
| 2986 | { |
| 2987 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, |
| 2988 | .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, |
| 2989 | .version = (CAMERA_SW_VERSION_ENTRY + 1) & 0xffffff}, |
| 2990 | { |
| 2991 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, |
| 2992 | .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, |
| 2993 | .version = (CAMERA_SW_VERSION_ENTRY + 2) & 0xffffff}, |
| 2994 | {} |
| 2995 | }; |
| 2996 | |
| 2997 | MODULE_DEVICE_TABLE(ieee1394, raw1394_id_table); |
| 2998 | |
| 2999 | static struct hpsb_protocol_driver raw1394_driver = { |
Ben Collins | ed30c26 | 2006-11-23 13:59:48 -0500 | [diff] [blame] | 3000 | .name = "raw1394", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3001 | .id_table = raw1394_id_table, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3002 | }; |
| 3003 | |
| 3004 | /******************************************************************************/ |
| 3005 | |
| 3006 | static struct hpsb_highlevel raw1394_highlevel = { |
| 3007 | .name = RAW1394_DEVICE_NAME, |
| 3008 | .add_host = add_host, |
| 3009 | .remove_host = remove_host, |
| 3010 | .host_reset = host_reset, |
| 3011 | .iso_receive = iso_receive, |
| 3012 | .fcp_request = fcp_request, |
| 3013 | }; |
| 3014 | |
| 3015 | static struct cdev raw1394_cdev; |
Arjan van de Ven | 2b8693c | 2007-02-12 00:55:32 -0800 | [diff] [blame^] | 3016 | static const struct file_operations raw1394_fops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3017 | .owner = THIS_MODULE, |
| 3018 | .read = raw1394_read, |
| 3019 | .write = raw1394_write, |
| 3020 | .mmap = raw1394_mmap, |
| 3021 | .ioctl = raw1394_ioctl, |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 3022 | // .compat_ioctl = ... someone needs to do this |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3023 | .poll = raw1394_poll, |
| 3024 | .open = raw1394_open, |
| 3025 | .release = raw1394_release, |
| 3026 | }; |
| 3027 | |
| 3028 | static int __init init_raw1394(void) |
| 3029 | { |
| 3030 | int ret = 0; |
| 3031 | |
| 3032 | hpsb_register_highlevel(&raw1394_highlevel); |
| 3033 | |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 3034 | if (IS_ERR |
| 3035 | (class_device_create |
| 3036 | (hpsb_protocol_class, NULL, |
| 3037 | MKDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_RAW1394 * 16), NULL, |
| 3038 | RAW1394_DEVICE_NAME))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3039 | ret = -EFAULT; |
| 3040 | goto out_unreg; |
| 3041 | } |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 3042 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3043 | cdev_init(&raw1394_cdev, &raw1394_fops); |
| 3044 | raw1394_cdev.owner = THIS_MODULE; |
| 3045 | kobject_set_name(&raw1394_cdev.kobj, RAW1394_DEVICE_NAME); |
| 3046 | ret = cdev_add(&raw1394_cdev, IEEE1394_RAW1394_DEV, 1); |
| 3047 | if (ret) { |
| 3048 | HPSB_ERR("raw1394 failed to register minor device block"); |
| 3049 | goto out_dev; |
| 3050 | } |
| 3051 | |
| 3052 | HPSB_INFO("raw1394: /dev/%s device initialized", RAW1394_DEVICE_NAME); |
| 3053 | |
| 3054 | ret = hpsb_register_protocol(&raw1394_driver); |
| 3055 | if (ret) { |
| 3056 | HPSB_ERR("raw1394: failed to register protocol"); |
| 3057 | cdev_del(&raw1394_cdev); |
| 3058 | goto out_dev; |
| 3059 | } |
| 3060 | |
| 3061 | goto out; |
| 3062 | |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 3063 | out_dev: |
gregkh@suse.de | 7e25ab9 | 2005-03-23 09:53:36 -0800 | [diff] [blame] | 3064 | class_device_destroy(hpsb_protocol_class, |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 3065 | MKDEV(IEEE1394_MAJOR, |
| 3066 | IEEE1394_MINOR_BLOCK_RAW1394 * 16)); |
| 3067 | out_unreg: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3068 | hpsb_unregister_highlevel(&raw1394_highlevel); |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 3069 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3070 | return ret; |
| 3071 | } |
| 3072 | |
| 3073 | static void __exit cleanup_raw1394(void) |
| 3074 | { |
gregkh@suse.de | 7e25ab9 | 2005-03-23 09:53:36 -0800 | [diff] [blame] | 3075 | class_device_destroy(hpsb_protocol_class, |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 3076 | MKDEV(IEEE1394_MAJOR, |
| 3077 | IEEE1394_MINOR_BLOCK_RAW1394 * 16)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3078 | cdev_del(&raw1394_cdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3079 | hpsb_unregister_highlevel(&raw1394_highlevel); |
| 3080 | hpsb_unregister_protocol(&raw1394_driver); |
| 3081 | } |
| 3082 | |
| 3083 | module_init(init_raw1394); |
| 3084 | module_exit(cleanup_raw1394); |
| 3085 | MODULE_LICENSE("GPL"); |