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" |
| 47 | #include "ieee1394.h" |
| 48 | #include "ieee1394_types.h" |
| 49 | #include "ieee1394_core.h" |
| 50 | #include "nodemgr.h" |
| 51 | #include "hosts.h" |
| 52 | #include "highlevel.h" |
| 53 | #include "iso.h" |
| 54 | #include "ieee1394_transactions.h" |
| 55 | #include "raw1394.h" |
| 56 | #include "raw1394-private.h" |
| 57 | |
| 58 | #define int2ptr(x) ((void __user *)(unsigned long)x) |
| 59 | #define ptr2int(x) ((u64)(unsigned long)(void __user *)x) |
| 60 | |
| 61 | #ifdef CONFIG_IEEE1394_VERBOSEDEBUG |
| 62 | #define RAW1394_DEBUG |
| 63 | #endif |
| 64 | |
| 65 | #ifdef RAW1394_DEBUG |
| 66 | #define DBGMSG(fmt, args...) \ |
| 67 | printk(KERN_INFO "raw1394:" fmt "\n" , ## args) |
| 68 | #else |
| 69 | #define DBGMSG(fmt, args...) |
| 70 | #endif |
| 71 | |
| 72 | static LIST_HEAD(host_info_list); |
| 73 | static int host_count; |
| 74 | static DEFINE_SPINLOCK(host_info_lock); |
| 75 | static atomic_t internal_generation = ATOMIC_INIT(0); |
| 76 | |
| 77 | static atomic_t iso_buffer_size; |
| 78 | static const int iso_buffer_max = 4 * 1024 * 1024; /* 4 MB */ |
| 79 | |
| 80 | static struct hpsb_highlevel raw1394_highlevel; |
| 81 | |
| 82 | static int arm_read(struct hpsb_host *host, int nodeid, quadlet_t * buffer, |
| 83 | u64 addr, size_t length, u16 flags); |
| 84 | static int arm_write(struct hpsb_host *host, int nodeid, int destid, |
| 85 | quadlet_t * data, u64 addr, size_t length, u16 flags); |
| 86 | static int arm_lock(struct hpsb_host *host, int nodeid, quadlet_t * store, |
| 87 | u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode, |
| 88 | u16 flags); |
| 89 | static int arm_lock64(struct hpsb_host *host, int nodeid, octlet_t * store, |
| 90 | u64 addr, octlet_t data, octlet_t arg, int ext_tcode, |
| 91 | u16 flags); |
| 92 | static struct hpsb_address_ops arm_ops = { |
| 93 | .read = arm_read, |
| 94 | .write = arm_write, |
| 95 | .lock = arm_lock, |
| 96 | .lock64 = arm_lock64, |
| 97 | }; |
| 98 | |
| 99 | static void queue_complete_cb(struct pending_request *req); |
| 100 | |
Al Viro | dd0fc66 | 2005-10-07 07:46:04 +0100 | [diff] [blame] | 101 | static struct pending_request *__alloc_pending_request(gfp_t flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | { |
| 103 | struct pending_request *req; |
| 104 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 105 | req = kzalloc(sizeof(*req), flags); |
| 106 | if (req) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | INIT_LIST_HEAD(&req->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | |
| 109 | return req; |
| 110 | } |
| 111 | |
| 112 | static inline struct pending_request *alloc_pending_request(void) |
| 113 | { |
| 114 | return __alloc_pending_request(SLAB_KERNEL); |
| 115 | } |
| 116 | |
| 117 | static void free_pending_request(struct pending_request *req) |
| 118 | { |
| 119 | if (req->ibs) { |
| 120 | if (atomic_dec_and_test(&req->ibs->refcount)) { |
| 121 | atomic_sub(req->ibs->data_size, &iso_buffer_size); |
| 122 | kfree(req->ibs); |
| 123 | } |
| 124 | } else if (req->free_data) { |
| 125 | kfree(req->data); |
| 126 | } |
| 127 | hpsb_free_packet(req->packet); |
| 128 | kfree(req); |
| 129 | } |
| 130 | |
| 131 | /* fi->reqlists_lock must be taken */ |
| 132 | static void __queue_complete_req(struct pending_request *req) |
| 133 | { |
| 134 | struct file_info *fi = req->file_info; |
| 135 | list_del(&req->list); |
| 136 | list_add_tail(&req->list, &fi->req_complete); |
| 137 | |
| 138 | up(&fi->complete_sem); |
| 139 | wake_up_interruptible(&fi->poll_wait_complete); |
| 140 | } |
| 141 | |
| 142 | static void queue_complete_req(struct pending_request *req) |
| 143 | { |
| 144 | unsigned long flags; |
| 145 | struct file_info *fi = req->file_info; |
| 146 | |
| 147 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
| 148 | __queue_complete_req(req); |
| 149 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
| 150 | } |
| 151 | |
| 152 | static void queue_complete_cb(struct pending_request *req) |
| 153 | { |
| 154 | struct hpsb_packet *packet = req->packet; |
| 155 | int rcode = (packet->header[1] >> 12) & 0xf; |
| 156 | |
| 157 | switch (packet->ack_code) { |
| 158 | case ACKX_NONE: |
| 159 | case ACKX_SEND_ERROR: |
| 160 | req->req.error = RAW1394_ERROR_SEND_ERROR; |
| 161 | break; |
| 162 | case ACKX_ABORTED: |
| 163 | req->req.error = RAW1394_ERROR_ABORTED; |
| 164 | break; |
| 165 | case ACKX_TIMEOUT: |
| 166 | req->req.error = RAW1394_ERROR_TIMEOUT; |
| 167 | break; |
| 168 | default: |
| 169 | req->req.error = (packet->ack_code << 16) | rcode; |
| 170 | break; |
| 171 | } |
| 172 | |
| 173 | if (!((packet->ack_code == ACK_PENDING) && (rcode == RCODE_COMPLETE))) { |
| 174 | req->req.length = 0; |
| 175 | } |
| 176 | |
| 177 | if ((req->req.type == RAW1394_REQ_ASYNC_READ) || |
| 178 | (req->req.type == RAW1394_REQ_ASYNC_WRITE) || |
| 179 | (req->req.type == RAW1394_REQ_ASYNC_STREAM) || |
| 180 | (req->req.type == RAW1394_REQ_LOCK) || |
| 181 | (req->req.type == RAW1394_REQ_LOCK64)) |
| 182 | hpsb_free_tlabel(packet); |
| 183 | |
| 184 | queue_complete_req(req); |
| 185 | } |
| 186 | |
| 187 | static void add_host(struct hpsb_host *host) |
| 188 | { |
| 189 | struct host_info *hi; |
| 190 | unsigned long flags; |
| 191 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 192 | hi = kmalloc(sizeof(*hi), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 194 | if (hi) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | INIT_LIST_HEAD(&hi->list); |
| 196 | hi->host = host; |
| 197 | INIT_LIST_HEAD(&hi->file_info_list); |
| 198 | |
| 199 | spin_lock_irqsave(&host_info_lock, flags); |
| 200 | list_add_tail(&hi->list, &host_info_list); |
| 201 | host_count++; |
| 202 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 203 | } |
| 204 | |
| 205 | atomic_inc(&internal_generation); |
| 206 | } |
| 207 | |
| 208 | static struct host_info *find_host_info(struct hpsb_host *host) |
| 209 | { |
| 210 | struct host_info *hi; |
| 211 | |
| 212 | list_for_each_entry(hi, &host_info_list, list) |
| 213 | if (hi->host == host) |
| 214 | return hi; |
| 215 | |
| 216 | return NULL; |
| 217 | } |
| 218 | |
| 219 | static void remove_host(struct hpsb_host *host) |
| 220 | { |
| 221 | struct host_info *hi; |
| 222 | unsigned long flags; |
| 223 | |
| 224 | spin_lock_irqsave(&host_info_lock, flags); |
| 225 | hi = find_host_info(host); |
| 226 | |
| 227 | if (hi != NULL) { |
| 228 | list_del(&hi->list); |
| 229 | host_count--; |
| 230 | /* |
| 231 | FIXME: address ranges should be removed |
| 232 | and fileinfo states should be initialized |
| 233 | (including setting generation to |
| 234 | internal-generation ...) |
| 235 | */ |
| 236 | } |
| 237 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 238 | |
| 239 | if (hi == NULL) { |
| 240 | printk(KERN_ERR "raw1394: attempt to remove unknown host " |
| 241 | "0x%p\n", host); |
| 242 | return; |
| 243 | } |
| 244 | |
| 245 | kfree(hi); |
| 246 | |
| 247 | atomic_inc(&internal_generation); |
| 248 | } |
| 249 | |
| 250 | static void host_reset(struct hpsb_host *host) |
| 251 | { |
| 252 | unsigned long flags; |
| 253 | struct host_info *hi; |
| 254 | struct file_info *fi; |
| 255 | struct pending_request *req; |
| 256 | |
| 257 | spin_lock_irqsave(&host_info_lock, flags); |
| 258 | hi = find_host_info(host); |
| 259 | |
| 260 | if (hi != NULL) { |
| 261 | list_for_each_entry(fi, &hi->file_info_list, list) { |
| 262 | if (fi->notification == RAW1394_NOTIFY_ON) { |
| 263 | req = __alloc_pending_request(SLAB_ATOMIC); |
| 264 | |
| 265 | if (req != NULL) { |
| 266 | req->file_info = fi; |
| 267 | req->req.type = RAW1394_REQ_BUS_RESET; |
| 268 | req->req.generation = |
| 269 | get_hpsb_generation(host); |
| 270 | req->req.misc = (host->node_id << 16) |
| 271 | | host->node_count; |
| 272 | if (fi->protocol_version > 3) { |
| 273 | req->req.misc |= |
| 274 | (NODEID_TO_NODE |
| 275 | (host->irm_id) |
| 276 | << 8); |
| 277 | } |
| 278 | |
| 279 | queue_complete_req(req); |
| 280 | } |
| 281 | } |
| 282 | } |
| 283 | } |
| 284 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 285 | } |
| 286 | |
| 287 | static void iso_receive(struct hpsb_host *host, int channel, quadlet_t * data, |
| 288 | size_t length) |
| 289 | { |
| 290 | unsigned long flags; |
| 291 | struct host_info *hi; |
| 292 | struct file_info *fi; |
| 293 | struct pending_request *req, *req_next; |
| 294 | struct iso_block_store *ibs = NULL; |
| 295 | LIST_HEAD(reqs); |
| 296 | |
| 297 | if ((atomic_read(&iso_buffer_size) + length) > iso_buffer_max) { |
| 298 | HPSB_INFO("dropped iso packet"); |
| 299 | return; |
| 300 | } |
| 301 | |
| 302 | spin_lock_irqsave(&host_info_lock, flags); |
| 303 | hi = find_host_info(host); |
| 304 | |
| 305 | if (hi != NULL) { |
| 306 | list_for_each_entry(fi, &hi->file_info_list, list) { |
| 307 | if (!(fi->listen_channels & (1ULL << channel))) |
| 308 | continue; |
| 309 | |
| 310 | req = __alloc_pending_request(SLAB_ATOMIC); |
| 311 | if (!req) |
| 312 | break; |
| 313 | |
| 314 | if (!ibs) { |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 315 | ibs = kmalloc(sizeof(*ibs) + length, |
| 316 | SLAB_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | if (!ibs) { |
| 318 | kfree(req); |
| 319 | break; |
| 320 | } |
| 321 | |
| 322 | atomic_add(length, &iso_buffer_size); |
| 323 | atomic_set(&ibs->refcount, 0); |
| 324 | ibs->data_size = length; |
| 325 | memcpy(ibs->data, data, length); |
| 326 | } |
| 327 | |
| 328 | atomic_inc(&ibs->refcount); |
| 329 | |
| 330 | req->file_info = fi; |
| 331 | req->ibs = ibs; |
| 332 | req->data = ibs->data; |
| 333 | req->req.type = RAW1394_REQ_ISO_RECEIVE; |
| 334 | req->req.generation = get_hpsb_generation(host); |
| 335 | req->req.misc = 0; |
| 336 | req->req.recvb = ptr2int(fi->iso_buffer); |
| 337 | req->req.length = min(length, fi->iso_buffer_length); |
| 338 | |
| 339 | list_add_tail(&req->list, &reqs); |
| 340 | } |
| 341 | } |
| 342 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 343 | |
| 344 | list_for_each_entry_safe(req, req_next, &reqs, list) |
| 345 | queue_complete_req(req); |
| 346 | } |
| 347 | |
| 348 | static void fcp_request(struct hpsb_host *host, int nodeid, int direction, |
| 349 | int cts, u8 * data, size_t length) |
| 350 | { |
| 351 | unsigned long flags; |
| 352 | struct host_info *hi; |
| 353 | struct file_info *fi; |
| 354 | struct pending_request *req, *req_next; |
| 355 | struct iso_block_store *ibs = NULL; |
| 356 | LIST_HEAD(reqs); |
| 357 | |
| 358 | if ((atomic_read(&iso_buffer_size) + length) > iso_buffer_max) { |
| 359 | HPSB_INFO("dropped fcp request"); |
| 360 | return; |
| 361 | } |
| 362 | |
| 363 | spin_lock_irqsave(&host_info_lock, flags); |
| 364 | hi = find_host_info(host); |
| 365 | |
| 366 | if (hi != NULL) { |
| 367 | list_for_each_entry(fi, &hi->file_info_list, list) { |
| 368 | if (!fi->fcp_buffer) |
| 369 | continue; |
| 370 | |
| 371 | req = __alloc_pending_request(SLAB_ATOMIC); |
| 372 | if (!req) |
| 373 | break; |
| 374 | |
| 375 | if (!ibs) { |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 376 | ibs = kmalloc(sizeof(*ibs) + length, |
| 377 | SLAB_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | if (!ibs) { |
| 379 | kfree(req); |
| 380 | break; |
| 381 | } |
| 382 | |
| 383 | atomic_add(length, &iso_buffer_size); |
| 384 | atomic_set(&ibs->refcount, 0); |
| 385 | ibs->data_size = length; |
| 386 | memcpy(ibs->data, data, length); |
| 387 | } |
| 388 | |
| 389 | atomic_inc(&ibs->refcount); |
| 390 | |
| 391 | req->file_info = fi; |
| 392 | req->ibs = ibs; |
| 393 | req->data = ibs->data; |
| 394 | req->req.type = RAW1394_REQ_FCP_REQUEST; |
| 395 | req->req.generation = get_hpsb_generation(host); |
| 396 | req->req.misc = nodeid | (direction << 16); |
| 397 | req->req.recvb = ptr2int(fi->fcp_buffer); |
| 398 | req->req.length = length; |
| 399 | |
| 400 | list_add_tail(&req->list, &reqs); |
| 401 | } |
| 402 | } |
| 403 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 404 | |
| 405 | list_for_each_entry_safe(req, req_next, &reqs, list) |
| 406 | queue_complete_req(req); |
| 407 | } |
| 408 | |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 409 | #ifdef CONFIG_COMPAT |
| 410 | struct compat_raw1394_req { |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 411 | __u32 type; |
| 412 | __s32 error; |
| 413 | __u32 misc; |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 414 | |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 415 | __u32 generation; |
| 416 | __u32 length; |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 417 | |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 418 | __u64 address; |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 419 | |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 420 | __u64 tag; |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 421 | |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 422 | __u64 sendb; |
| 423 | __u64 recvb; |
| 424 | } __attribute__((packed)); |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 425 | |
| 426 | static const char __user *raw1394_compat_write(const char __user *buf) |
| 427 | { |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 428 | struct compat_raw1394_req __user *cr = (typeof(cr)) buf; |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 429 | struct raw1394_request __user *r; |
| 430 | r = compat_alloc_user_space(sizeof(struct raw1394_request)); |
| 431 | |
| 432 | #define C(x) __copy_in_user(&r->x, &cr->x, sizeof(r->x)) |
| 433 | |
| 434 | if (copy_in_user(r, cr, sizeof(struct compat_raw1394_req)) || |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 435 | C(address) || |
| 436 | C(tag) || |
| 437 | C(sendb) || |
| 438 | C(recvb)) |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 439 | return ERR_PTR(-EFAULT); |
| 440 | return (const char __user *)r; |
| 441 | } |
| 442 | #undef C |
| 443 | |
| 444 | #define P(x) __put_user(r->x, &cr->x) |
| 445 | |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 446 | static int |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 447 | raw1394_compat_read(const char __user *buf, struct raw1394_request *r) |
| 448 | { |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 449 | struct compat_raw1394_req __user *cr = (typeof(cr)) r; |
| 450 | if (!access_ok(VERIFY_WRITE, cr, sizeof(struct compat_raw1394_req)) || |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 451 | P(type) || |
| 452 | P(error) || |
| 453 | P(misc) || |
| 454 | P(generation) || |
| 455 | P(length) || |
| 456 | P(address) || |
| 457 | P(tag) || |
| 458 | P(sendb) || |
| 459 | P(recvb)) |
| 460 | return -EFAULT; |
| 461 | return sizeof(struct compat_raw1394_req); |
| 462 | } |
| 463 | #undef P |
| 464 | |
| 465 | #endif |
| 466 | |
| 467 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | static ssize_t raw1394_read(struct file *file, char __user * buffer, |
| 469 | size_t count, loff_t * offset_is_ignored) |
| 470 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 471 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | struct file_info *fi = (struct file_info *)file->private_data; |
| 473 | struct list_head *lh; |
| 474 | struct pending_request *req; |
| 475 | ssize_t ret; |
| 476 | |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 477 | #ifdef CONFIG_COMPAT |
| 478 | if (count == sizeof(struct compat_raw1394_req)) { |
| 479 | /* ok */ |
| 480 | } else |
| 481 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | if (count != sizeof(struct raw1394_request)) { |
| 483 | return -EINVAL; |
| 484 | } |
| 485 | |
| 486 | if (!access_ok(VERIFY_WRITE, buffer, count)) { |
| 487 | return -EFAULT; |
| 488 | } |
| 489 | |
| 490 | if (file->f_flags & O_NONBLOCK) { |
| 491 | if (down_trylock(&fi->complete_sem)) { |
| 492 | return -EAGAIN; |
| 493 | } |
| 494 | } else { |
| 495 | if (down_interruptible(&fi->complete_sem)) { |
| 496 | return -ERESTARTSYS; |
| 497 | } |
| 498 | } |
| 499 | |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 500 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | lh = fi->req_complete.next; |
| 502 | list_del(lh); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 503 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | |
| 505 | req = list_entry(lh, struct pending_request, list); |
| 506 | |
| 507 | if (req->req.length) { |
| 508 | if (copy_to_user(int2ptr(req->req.recvb), req->data, |
| 509 | req->req.length)) { |
| 510 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 511 | } |
| 512 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 514 | #ifdef CONFIG_COMPAT |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 515 | if (count == sizeof(struct compat_raw1394_req) && |
| 516 | sizeof(struct compat_raw1394_req) != |
| 517 | sizeof(struct raw1394_request)) { |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 518 | ret = raw1394_compat_read(buffer, &req->req); |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 519 | } else |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 520 | #endif |
| 521 | { |
| 522 | if (copy_to_user(buffer, &req->req, sizeof(req->req))) { |
| 523 | ret = -EFAULT; |
| 524 | goto out; |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 525 | } |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 526 | ret = (ssize_t) sizeof(struct raw1394_request); |
| 527 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | out: |
| 529 | free_pending_request(req); |
| 530 | return ret; |
| 531 | } |
| 532 | |
| 533 | static int state_opened(struct file_info *fi, struct pending_request *req) |
| 534 | { |
| 535 | if (req->req.type == RAW1394_REQ_INITIALIZE) { |
| 536 | switch (req->req.misc) { |
| 537 | case RAW1394_KERNELAPI_VERSION: |
| 538 | case 3: |
| 539 | fi->state = initialized; |
| 540 | fi->protocol_version = req->req.misc; |
| 541 | req->req.error = RAW1394_ERROR_NONE; |
| 542 | req->req.generation = atomic_read(&internal_generation); |
| 543 | break; |
| 544 | |
| 545 | default: |
| 546 | req->req.error = RAW1394_ERROR_COMPAT; |
| 547 | req->req.misc = RAW1394_KERNELAPI_VERSION; |
| 548 | } |
| 549 | } else { |
| 550 | req->req.error = RAW1394_ERROR_STATE_ORDER; |
| 551 | } |
| 552 | |
| 553 | req->req.length = 0; |
| 554 | queue_complete_req(req); |
| 555 | return sizeof(struct raw1394_request); |
| 556 | } |
| 557 | |
| 558 | static int state_initialized(struct file_info *fi, struct pending_request *req) |
| 559 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 560 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | struct host_info *hi; |
| 562 | struct raw1394_khost_list *khl; |
| 563 | |
| 564 | if (req->req.generation != atomic_read(&internal_generation)) { |
| 565 | req->req.error = RAW1394_ERROR_GENERATION; |
| 566 | req->req.generation = atomic_read(&internal_generation); |
| 567 | req->req.length = 0; |
| 568 | queue_complete_req(req); |
| 569 | return sizeof(struct raw1394_request); |
| 570 | } |
| 571 | |
| 572 | switch (req->req.type) { |
| 573 | case RAW1394_REQ_LIST_CARDS: |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 574 | spin_lock_irqsave(&host_info_lock, flags); |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 575 | khl = kmalloc(sizeof(*khl) * host_count, SLAB_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 577 | if (khl) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | req->req.misc = host_count; |
| 579 | req->data = (quadlet_t *) khl; |
| 580 | |
| 581 | list_for_each_entry(hi, &host_info_list, list) { |
| 582 | khl->nodes = hi->host->node_count; |
| 583 | strcpy(khl->name, hi->host->driver->name); |
| 584 | khl++; |
| 585 | } |
| 586 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 587 | spin_unlock_irqrestore(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 589 | if (khl) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | req->req.error = RAW1394_ERROR_NONE; |
| 591 | req->req.length = min(req->req.length, |
| 592 | (u32) (sizeof |
| 593 | (struct raw1394_khost_list) |
| 594 | * req->req.misc)); |
| 595 | req->free_data = 1; |
| 596 | } else { |
| 597 | return -ENOMEM; |
| 598 | } |
| 599 | break; |
| 600 | |
| 601 | case RAW1394_REQ_SET_CARD: |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 602 | spin_lock_irqsave(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | if (req->req.misc < host_count) { |
| 604 | list_for_each_entry(hi, &host_info_list, list) { |
| 605 | if (!req->req.misc--) |
| 606 | break; |
| 607 | } |
| 608 | get_device(&hi->host->device); // XXX Need to handle failure case |
| 609 | list_add_tail(&fi->list, &hi->file_info_list); |
| 610 | fi->host = hi->host; |
| 611 | fi->state = connected; |
| 612 | |
| 613 | req->req.error = RAW1394_ERROR_NONE; |
| 614 | req->req.generation = get_hpsb_generation(fi->host); |
| 615 | req->req.misc = (fi->host->node_id << 16) |
| 616 | | fi->host->node_count; |
| 617 | if (fi->protocol_version > 3) { |
| 618 | req->req.misc |= |
| 619 | NODEID_TO_NODE(fi->host->irm_id) << 8; |
| 620 | } |
| 621 | } else { |
| 622 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 623 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 624 | spin_unlock_irqrestore(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | |
| 626 | req->req.length = 0; |
| 627 | break; |
| 628 | |
| 629 | default: |
| 630 | req->req.error = RAW1394_ERROR_STATE_ORDER; |
| 631 | req->req.length = 0; |
| 632 | break; |
| 633 | } |
| 634 | |
| 635 | queue_complete_req(req); |
| 636 | return sizeof(struct raw1394_request); |
| 637 | } |
| 638 | |
| 639 | static void handle_iso_listen(struct file_info *fi, struct pending_request *req) |
| 640 | { |
| 641 | int channel = req->req.misc; |
| 642 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | if ((channel > 63) || (channel < -64)) { |
| 644 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 645 | } else if (channel >= 0) { |
| 646 | /* allocate channel req.misc */ |
| 647 | if (fi->listen_channels & (1ULL << channel)) { |
| 648 | req->req.error = RAW1394_ERROR_ALREADY; |
| 649 | } else { |
| 650 | if (hpsb_listen_channel |
| 651 | (&raw1394_highlevel, fi->host, channel)) { |
| 652 | req->req.error = RAW1394_ERROR_ALREADY; |
| 653 | } else { |
| 654 | fi->listen_channels |= 1ULL << channel; |
| 655 | fi->iso_buffer = int2ptr(req->req.recvb); |
| 656 | fi->iso_buffer_length = req->req.length; |
| 657 | } |
| 658 | } |
| 659 | } else { |
| 660 | /* deallocate channel (one's complement neg) req.misc */ |
| 661 | channel = ~channel; |
| 662 | |
| 663 | if (fi->listen_channels & (1ULL << channel)) { |
| 664 | hpsb_unlisten_channel(&raw1394_highlevel, fi->host, |
| 665 | channel); |
| 666 | fi->listen_channels &= ~(1ULL << channel); |
| 667 | } else { |
| 668 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 669 | } |
| 670 | } |
| 671 | |
| 672 | req->req.length = 0; |
| 673 | queue_complete_req(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | } |
| 675 | |
| 676 | static void handle_fcp_listen(struct file_info *fi, struct pending_request *req) |
| 677 | { |
| 678 | if (req->req.misc) { |
| 679 | if (fi->fcp_buffer) { |
| 680 | req->req.error = RAW1394_ERROR_ALREADY; |
| 681 | } else { |
| 682 | fi->fcp_buffer = int2ptr(req->req.recvb); |
| 683 | } |
| 684 | } else { |
| 685 | if (!fi->fcp_buffer) { |
| 686 | req->req.error = RAW1394_ERROR_ALREADY; |
| 687 | } else { |
| 688 | fi->fcp_buffer = NULL; |
| 689 | } |
| 690 | } |
| 691 | |
| 692 | req->req.length = 0; |
| 693 | queue_complete_req(req); |
| 694 | } |
| 695 | |
| 696 | static int handle_async_request(struct file_info *fi, |
| 697 | struct pending_request *req, int node) |
| 698 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 699 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | struct hpsb_packet *packet = NULL; |
| 701 | u64 addr = req->req.address & 0xffffffffffffULL; |
| 702 | |
| 703 | switch (req->req.type) { |
| 704 | case RAW1394_REQ_ASYNC_READ: |
| 705 | DBGMSG("read_request called"); |
| 706 | packet = |
| 707 | hpsb_make_readpacket(fi->host, node, addr, req->req.length); |
| 708 | |
| 709 | if (!packet) |
| 710 | return -ENOMEM; |
| 711 | |
| 712 | if (req->req.length == 4) |
| 713 | req->data = &packet->header[3]; |
| 714 | else |
| 715 | req->data = packet->data; |
| 716 | |
| 717 | break; |
| 718 | |
| 719 | case RAW1394_REQ_ASYNC_WRITE: |
| 720 | DBGMSG("write_request called"); |
| 721 | |
| 722 | packet = hpsb_make_writepacket(fi->host, node, addr, NULL, |
| 723 | req->req.length); |
| 724 | if (!packet) |
| 725 | return -ENOMEM; |
| 726 | |
| 727 | if (req->req.length == 4) { |
| 728 | if (copy_from_user |
| 729 | (&packet->header[3], int2ptr(req->req.sendb), |
| 730 | req->req.length)) |
| 731 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 732 | } else { |
| 733 | if (copy_from_user |
| 734 | (packet->data, int2ptr(req->req.sendb), |
| 735 | req->req.length)) |
| 736 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 737 | } |
| 738 | |
| 739 | req->req.length = 0; |
| 740 | break; |
| 741 | |
| 742 | case RAW1394_REQ_ASYNC_STREAM: |
| 743 | DBGMSG("stream_request called"); |
| 744 | |
| 745 | packet = |
| 746 | hpsb_make_streampacket(fi->host, NULL, req->req.length, |
| 747 | node & 0x3f /*channel */ , |
| 748 | (req->req.misc >> 16) & 0x3, |
| 749 | req->req.misc & 0xf); |
| 750 | if (!packet) |
| 751 | return -ENOMEM; |
| 752 | |
| 753 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), |
| 754 | req->req.length)) |
| 755 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 756 | |
| 757 | req->req.length = 0; |
| 758 | break; |
| 759 | |
| 760 | case RAW1394_REQ_LOCK: |
| 761 | DBGMSG("lock_request called"); |
| 762 | if ((req->req.misc == EXTCODE_FETCH_ADD) |
| 763 | || (req->req.misc == EXTCODE_LITTLE_ADD)) { |
| 764 | if (req->req.length != 4) { |
| 765 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 766 | break; |
| 767 | } |
| 768 | } else { |
| 769 | if (req->req.length != 8) { |
| 770 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 771 | break; |
| 772 | } |
| 773 | } |
| 774 | |
| 775 | packet = hpsb_make_lockpacket(fi->host, node, addr, |
| 776 | req->req.misc, NULL, 0); |
| 777 | if (!packet) |
| 778 | return -ENOMEM; |
| 779 | |
| 780 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), |
| 781 | req->req.length)) { |
| 782 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 783 | break; |
| 784 | } |
| 785 | |
| 786 | req->data = packet->data; |
| 787 | req->req.length = 4; |
| 788 | break; |
| 789 | |
| 790 | case RAW1394_REQ_LOCK64: |
| 791 | DBGMSG("lock64_request called"); |
| 792 | if ((req->req.misc == EXTCODE_FETCH_ADD) |
| 793 | || (req->req.misc == EXTCODE_LITTLE_ADD)) { |
| 794 | if (req->req.length != 8) { |
| 795 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 796 | break; |
| 797 | } |
| 798 | } else { |
| 799 | if (req->req.length != 16) { |
| 800 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 801 | break; |
| 802 | } |
| 803 | } |
| 804 | packet = hpsb_make_lock64packet(fi->host, node, addr, |
| 805 | req->req.misc, NULL, 0); |
| 806 | if (!packet) |
| 807 | return -ENOMEM; |
| 808 | |
| 809 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), |
| 810 | req->req.length)) { |
| 811 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 812 | break; |
| 813 | } |
| 814 | |
| 815 | req->data = packet->data; |
| 816 | req->req.length = 8; |
| 817 | break; |
| 818 | |
| 819 | default: |
| 820 | req->req.error = RAW1394_ERROR_STATE_ORDER; |
| 821 | } |
| 822 | |
| 823 | req->packet = packet; |
| 824 | |
| 825 | if (req->req.error) { |
| 826 | req->req.length = 0; |
| 827 | queue_complete_req(req); |
| 828 | return sizeof(struct raw1394_request); |
| 829 | } |
| 830 | |
| 831 | hpsb_set_packet_complete_task(packet, |
| 832 | (void (*)(void *))queue_complete_cb, req); |
| 833 | |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 834 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | list_add_tail(&req->list, &fi->req_pending); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 836 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | |
| 838 | packet->generation = req->req.generation; |
| 839 | |
| 840 | if (hpsb_send_packet(packet) < 0) { |
| 841 | req->req.error = RAW1394_ERROR_SEND_ERROR; |
| 842 | req->req.length = 0; |
| 843 | hpsb_free_tlabel(packet); |
| 844 | queue_complete_req(req); |
| 845 | } |
| 846 | return sizeof(struct raw1394_request); |
| 847 | } |
| 848 | |
| 849 | static int handle_iso_send(struct file_info *fi, struct pending_request *req, |
| 850 | int channel) |
| 851 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 852 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | struct hpsb_packet *packet; |
| 854 | |
| 855 | packet = hpsb_make_isopacket(fi->host, req->req.length, channel & 0x3f, |
| 856 | (req->req.misc >> 16) & 0x3, |
| 857 | req->req.misc & 0xf); |
| 858 | if (!packet) |
| 859 | return -ENOMEM; |
| 860 | |
| 861 | packet->speed_code = req->req.address & 0x3; |
| 862 | |
| 863 | req->packet = packet; |
| 864 | |
| 865 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), |
| 866 | req->req.length)) { |
| 867 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 868 | req->req.length = 0; |
| 869 | queue_complete_req(req); |
| 870 | return sizeof(struct raw1394_request); |
| 871 | } |
| 872 | |
| 873 | req->req.length = 0; |
| 874 | hpsb_set_packet_complete_task(packet, |
| 875 | (void (*)(void *))queue_complete_req, |
| 876 | req); |
| 877 | |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 878 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | list_add_tail(&req->list, &fi->req_pending); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 880 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | |
| 882 | /* Update the generation of the packet just before sending. */ |
| 883 | packet->generation = req->req.generation; |
| 884 | |
| 885 | if (hpsb_send_packet(packet) < 0) { |
| 886 | req->req.error = RAW1394_ERROR_SEND_ERROR; |
| 887 | queue_complete_req(req); |
| 888 | } |
| 889 | |
| 890 | return sizeof(struct raw1394_request); |
| 891 | } |
| 892 | |
| 893 | static int handle_async_send(struct file_info *fi, struct pending_request *req) |
| 894 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 895 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | struct hpsb_packet *packet; |
| 897 | int header_length = req->req.misc & 0xffff; |
| 898 | int expect_response = req->req.misc >> 16; |
| 899 | |
| 900 | if ((header_length > req->req.length) || (header_length < 12)) { |
| 901 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 902 | req->req.length = 0; |
| 903 | queue_complete_req(req); |
| 904 | return sizeof(struct raw1394_request); |
| 905 | } |
| 906 | |
| 907 | packet = hpsb_alloc_packet(req->req.length - header_length); |
| 908 | req->packet = packet; |
| 909 | if (!packet) |
| 910 | return -ENOMEM; |
| 911 | |
| 912 | if (copy_from_user(packet->header, int2ptr(req->req.sendb), |
| 913 | header_length)) { |
| 914 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 915 | req->req.length = 0; |
| 916 | queue_complete_req(req); |
| 917 | return sizeof(struct raw1394_request); |
| 918 | } |
| 919 | |
| 920 | if (copy_from_user |
| 921 | (packet->data, int2ptr(req->req.sendb) + header_length, |
| 922 | packet->data_size)) { |
| 923 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 924 | req->req.length = 0; |
| 925 | queue_complete_req(req); |
| 926 | return sizeof(struct raw1394_request); |
| 927 | } |
| 928 | |
| 929 | packet->type = hpsb_async; |
| 930 | packet->node_id = packet->header[0] >> 16; |
| 931 | packet->tcode = (packet->header[0] >> 4) & 0xf; |
| 932 | packet->tlabel = (packet->header[0] >> 10) & 0x3f; |
| 933 | packet->host = fi->host; |
| 934 | packet->expect_response = expect_response; |
| 935 | packet->header_size = header_length; |
| 936 | packet->data_size = req->req.length - header_length; |
| 937 | |
| 938 | req->req.length = 0; |
| 939 | hpsb_set_packet_complete_task(packet, |
| 940 | (void (*)(void *))queue_complete_cb, req); |
| 941 | |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 942 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 943 | list_add_tail(&req->list, &fi->req_pending); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 944 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | |
| 946 | /* Update the generation of the packet just before sending. */ |
| 947 | packet->generation = req->req.generation; |
| 948 | |
| 949 | if (hpsb_send_packet(packet) < 0) { |
| 950 | req->req.error = RAW1394_ERROR_SEND_ERROR; |
| 951 | queue_complete_req(req); |
| 952 | } |
| 953 | |
| 954 | return sizeof(struct raw1394_request); |
| 955 | } |
| 956 | |
| 957 | static int arm_read(struct hpsb_host *host, int nodeid, quadlet_t * buffer, |
| 958 | u64 addr, size_t length, u16 flags) |
| 959 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 960 | unsigned long irqflags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 961 | struct pending_request *req; |
| 962 | struct host_info *hi; |
| 963 | struct file_info *fi = NULL; |
| 964 | struct list_head *entry; |
| 965 | struct arm_addr *arm_addr = NULL; |
| 966 | struct arm_request *arm_req = NULL; |
| 967 | struct arm_response *arm_resp = NULL; |
| 968 | int found = 0, size = 0, rcode = -1; |
| 969 | struct arm_request_response *arm_req_resp = NULL; |
| 970 | |
| 971 | DBGMSG("arm_read called by node: %X" |
| 972 | "addr: %4.4x %8.8x length: %Zu", nodeid, |
| 973 | (u16) ((addr >> 32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF), |
| 974 | length); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 975 | spin_lock_irqsave(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | hi = find_host_info(host); /* search address-entry */ |
| 977 | if (hi != NULL) { |
| 978 | list_for_each_entry(fi, &hi->file_info_list, list) { |
| 979 | entry = fi->addr_list.next; |
| 980 | while (entry != &(fi->addr_list)) { |
| 981 | arm_addr = |
| 982 | list_entry(entry, struct arm_addr, |
| 983 | addr_list); |
| 984 | if (((arm_addr->start) <= (addr)) |
| 985 | && ((arm_addr->end) >= (addr + length))) { |
| 986 | found = 1; |
| 987 | break; |
| 988 | } |
| 989 | entry = entry->next; |
| 990 | } |
| 991 | if (found) { |
| 992 | break; |
| 993 | } |
| 994 | } |
| 995 | } |
| 996 | rcode = -1; |
| 997 | if (!found) { |
| 998 | printk(KERN_ERR "raw1394: arm_read FAILED addr_entry not found" |
| 999 | " -> rcode_address_error\n"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1000 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | return (RCODE_ADDRESS_ERROR); |
| 1002 | } else { |
| 1003 | DBGMSG("arm_read addr_entry FOUND"); |
| 1004 | } |
| 1005 | if (arm_addr->rec_length < length) { |
| 1006 | DBGMSG("arm_read blocklength too big -> rcode_data_error"); |
| 1007 | rcode = RCODE_DATA_ERROR; /* hardware error, data is unavailable */ |
| 1008 | } |
| 1009 | if (rcode == -1) { |
| 1010 | if (arm_addr->access_rights & ARM_READ) { |
| 1011 | if (!(arm_addr->client_transactions & ARM_READ)) { |
| 1012 | memcpy(buffer, |
| 1013 | (arm_addr->addr_space_buffer) + (addr - |
| 1014 | (arm_addr-> |
| 1015 | start)), |
| 1016 | length); |
| 1017 | DBGMSG("arm_read -> (rcode_complete)"); |
| 1018 | rcode = RCODE_COMPLETE; |
| 1019 | } |
| 1020 | } else { |
| 1021 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ |
| 1022 | DBGMSG("arm_read -> rcode_type_error (access denied)"); |
| 1023 | } |
| 1024 | } |
| 1025 | if (arm_addr->notification_options & ARM_READ) { |
| 1026 | DBGMSG("arm_read -> entering notification-section"); |
| 1027 | req = __alloc_pending_request(SLAB_ATOMIC); |
| 1028 | if (!req) { |
| 1029 | DBGMSG("arm_read -> rcode_conflict_error"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1030 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1031 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 1032 | The request may be retried */ |
| 1033 | } |
| 1034 | if (rcode == RCODE_COMPLETE) { |
| 1035 | size = |
| 1036 | sizeof(struct arm_request) + |
| 1037 | sizeof(struct arm_response) + |
| 1038 | length * sizeof(byte_t) + |
| 1039 | sizeof(struct arm_request_response); |
| 1040 | } else { |
| 1041 | size = |
| 1042 | sizeof(struct arm_request) + |
| 1043 | sizeof(struct arm_response) + |
| 1044 | sizeof(struct arm_request_response); |
| 1045 | } |
| 1046 | req->data = kmalloc(size, SLAB_ATOMIC); |
| 1047 | if (!(req->data)) { |
| 1048 | free_pending_request(req); |
| 1049 | DBGMSG("arm_read -> rcode_conflict_error"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1050 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1051 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 1052 | The request may be retried */ |
| 1053 | } |
| 1054 | req->free_data = 1; |
| 1055 | req->file_info = fi; |
| 1056 | req->req.type = RAW1394_REQ_ARM; |
| 1057 | req->req.generation = get_hpsb_generation(host); |
| 1058 | req->req.misc = |
| 1059 | (((length << 16) & (0xFFFF0000)) | (ARM_READ & 0xFF)); |
| 1060 | req->req.tag = arm_addr->arm_tag; |
| 1061 | req->req.recvb = arm_addr->recvb; |
| 1062 | req->req.length = size; |
| 1063 | arm_req_resp = (struct arm_request_response *)(req->data); |
| 1064 | arm_req = (struct arm_request *)((byte_t *) (req->data) + |
| 1065 | (sizeof |
| 1066 | (struct |
| 1067 | arm_request_response))); |
| 1068 | arm_resp = |
| 1069 | (struct arm_response *)((byte_t *) (arm_req) + |
| 1070 | (sizeof(struct arm_request))); |
| 1071 | arm_req->buffer = NULL; |
| 1072 | arm_resp->buffer = NULL; |
| 1073 | if (rcode == RCODE_COMPLETE) { |
| 1074 | byte_t *buf = |
| 1075 | (byte_t *) arm_resp + sizeof(struct arm_response); |
| 1076 | memcpy(buf, |
| 1077 | (arm_addr->addr_space_buffer) + (addr - |
| 1078 | (arm_addr-> |
| 1079 | start)), |
| 1080 | length); |
| 1081 | arm_resp->buffer = |
| 1082 | int2ptr((arm_addr->recvb) + |
| 1083 | sizeof(struct arm_request_response) + |
| 1084 | sizeof(struct arm_request) + |
| 1085 | sizeof(struct arm_response)); |
| 1086 | } |
| 1087 | arm_resp->buffer_length = |
| 1088 | (rcode == RCODE_COMPLETE) ? length : 0; |
| 1089 | arm_resp->response_code = rcode; |
| 1090 | arm_req->buffer_length = 0; |
| 1091 | arm_req->generation = req->req.generation; |
| 1092 | arm_req->extended_transaction_code = 0; |
| 1093 | arm_req->destination_offset = addr; |
| 1094 | arm_req->source_nodeid = nodeid; |
| 1095 | arm_req->destination_nodeid = host->node_id; |
| 1096 | arm_req->tlabel = (flags >> 10) & 0x3f; |
| 1097 | arm_req->tcode = (flags >> 4) & 0x0f; |
| 1098 | arm_req_resp->request = int2ptr((arm_addr->recvb) + |
| 1099 | sizeof(struct |
| 1100 | arm_request_response)); |
| 1101 | arm_req_resp->response = |
| 1102 | int2ptr((arm_addr->recvb) + |
| 1103 | sizeof(struct arm_request_response) + |
| 1104 | sizeof(struct arm_request)); |
| 1105 | queue_complete_req(req); |
| 1106 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1107 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1108 | return (rcode); |
| 1109 | } |
| 1110 | |
| 1111 | static int arm_write(struct hpsb_host *host, int nodeid, int destid, |
| 1112 | quadlet_t * data, u64 addr, size_t length, u16 flags) |
| 1113 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1114 | unsigned long irqflags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1115 | struct pending_request *req; |
| 1116 | struct host_info *hi; |
| 1117 | struct file_info *fi = NULL; |
| 1118 | struct list_head *entry; |
| 1119 | struct arm_addr *arm_addr = NULL; |
| 1120 | struct arm_request *arm_req = NULL; |
| 1121 | struct arm_response *arm_resp = NULL; |
| 1122 | int found = 0, size = 0, rcode = -1, length_conflict = 0; |
| 1123 | struct arm_request_response *arm_req_resp = NULL; |
| 1124 | |
| 1125 | DBGMSG("arm_write called by node: %X" |
| 1126 | "addr: %4.4x %8.8x length: %Zu", nodeid, |
| 1127 | (u16) ((addr >> 32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF), |
| 1128 | length); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1129 | spin_lock_irqsave(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1130 | hi = find_host_info(host); /* search address-entry */ |
| 1131 | if (hi != NULL) { |
| 1132 | list_for_each_entry(fi, &hi->file_info_list, list) { |
| 1133 | entry = fi->addr_list.next; |
| 1134 | while (entry != &(fi->addr_list)) { |
| 1135 | arm_addr = |
| 1136 | list_entry(entry, struct arm_addr, |
| 1137 | addr_list); |
| 1138 | if (((arm_addr->start) <= (addr)) |
| 1139 | && ((arm_addr->end) >= (addr + length))) { |
| 1140 | found = 1; |
| 1141 | break; |
| 1142 | } |
| 1143 | entry = entry->next; |
| 1144 | } |
| 1145 | if (found) { |
| 1146 | break; |
| 1147 | } |
| 1148 | } |
| 1149 | } |
| 1150 | rcode = -1; |
| 1151 | if (!found) { |
| 1152 | printk(KERN_ERR "raw1394: arm_write FAILED addr_entry not found" |
| 1153 | " -> rcode_address_error\n"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1154 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | return (RCODE_ADDRESS_ERROR); |
| 1156 | } else { |
| 1157 | DBGMSG("arm_write addr_entry FOUND"); |
| 1158 | } |
| 1159 | if (arm_addr->rec_length < length) { |
| 1160 | DBGMSG("arm_write blocklength too big -> rcode_data_error"); |
| 1161 | length_conflict = 1; |
| 1162 | rcode = RCODE_DATA_ERROR; /* hardware error, data is unavailable */ |
| 1163 | } |
| 1164 | if (rcode == -1) { |
| 1165 | if (arm_addr->access_rights & ARM_WRITE) { |
| 1166 | if (!(arm_addr->client_transactions & ARM_WRITE)) { |
| 1167 | memcpy((arm_addr->addr_space_buffer) + |
| 1168 | (addr - (arm_addr->start)), data, |
| 1169 | length); |
| 1170 | DBGMSG("arm_write -> (rcode_complete)"); |
| 1171 | rcode = RCODE_COMPLETE; |
| 1172 | } |
| 1173 | } else { |
| 1174 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ |
| 1175 | DBGMSG("arm_write -> rcode_type_error (access denied)"); |
| 1176 | } |
| 1177 | } |
| 1178 | if (arm_addr->notification_options & ARM_WRITE) { |
| 1179 | DBGMSG("arm_write -> entering notification-section"); |
| 1180 | req = __alloc_pending_request(SLAB_ATOMIC); |
| 1181 | if (!req) { |
| 1182 | DBGMSG("arm_write -> rcode_conflict_error"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1183 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1184 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 1185 | The request my be retried */ |
| 1186 | } |
| 1187 | size = |
| 1188 | sizeof(struct arm_request) + sizeof(struct arm_response) + |
| 1189 | (length) * sizeof(byte_t) + |
| 1190 | sizeof(struct arm_request_response); |
| 1191 | req->data = kmalloc(size, SLAB_ATOMIC); |
| 1192 | if (!(req->data)) { |
| 1193 | free_pending_request(req); |
| 1194 | DBGMSG("arm_write -> rcode_conflict_error"); |
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_CONFLICT_ERROR); /* A resource conflict was detected. |
| 1197 | The request may be retried */ |
| 1198 | } |
| 1199 | req->free_data = 1; |
| 1200 | req->file_info = fi; |
| 1201 | req->req.type = RAW1394_REQ_ARM; |
| 1202 | req->req.generation = get_hpsb_generation(host); |
| 1203 | req->req.misc = |
| 1204 | (((length << 16) & (0xFFFF0000)) | (ARM_WRITE & 0xFF)); |
| 1205 | req->req.tag = arm_addr->arm_tag; |
| 1206 | req->req.recvb = arm_addr->recvb; |
| 1207 | req->req.length = size; |
| 1208 | arm_req_resp = (struct arm_request_response *)(req->data); |
| 1209 | arm_req = (struct arm_request *)((byte_t *) (req->data) + |
| 1210 | (sizeof |
| 1211 | (struct |
| 1212 | arm_request_response))); |
| 1213 | arm_resp = |
| 1214 | (struct arm_response *)((byte_t *) (arm_req) + |
| 1215 | (sizeof(struct arm_request))); |
| 1216 | arm_resp->buffer = NULL; |
| 1217 | memcpy((byte_t *) arm_resp + sizeof(struct arm_response), |
| 1218 | data, length); |
| 1219 | arm_req->buffer = int2ptr((arm_addr->recvb) + |
| 1220 | sizeof(struct arm_request_response) + |
| 1221 | sizeof(struct arm_request) + |
| 1222 | sizeof(struct arm_response)); |
| 1223 | arm_req->buffer_length = length; |
| 1224 | arm_req->generation = req->req.generation; |
| 1225 | arm_req->extended_transaction_code = 0; |
| 1226 | arm_req->destination_offset = addr; |
| 1227 | arm_req->source_nodeid = nodeid; |
| 1228 | arm_req->destination_nodeid = destid; |
| 1229 | arm_req->tlabel = (flags >> 10) & 0x3f; |
| 1230 | arm_req->tcode = (flags >> 4) & 0x0f; |
| 1231 | arm_resp->buffer_length = 0; |
| 1232 | arm_resp->response_code = rcode; |
| 1233 | arm_req_resp->request = int2ptr((arm_addr->recvb) + |
| 1234 | sizeof(struct |
| 1235 | arm_request_response)); |
| 1236 | arm_req_resp->response = |
| 1237 | int2ptr((arm_addr->recvb) + |
| 1238 | sizeof(struct arm_request_response) + |
| 1239 | sizeof(struct arm_request)); |
| 1240 | queue_complete_req(req); |
| 1241 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1242 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1243 | return (rcode); |
| 1244 | } |
| 1245 | |
| 1246 | static int arm_lock(struct hpsb_host *host, int nodeid, quadlet_t * store, |
| 1247 | u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode, |
| 1248 | u16 flags) |
| 1249 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1250 | unsigned long irqflags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1251 | struct pending_request *req; |
| 1252 | struct host_info *hi; |
| 1253 | struct file_info *fi = NULL; |
| 1254 | struct list_head *entry; |
| 1255 | struct arm_addr *arm_addr = NULL; |
| 1256 | struct arm_request *arm_req = NULL; |
| 1257 | struct arm_response *arm_resp = NULL; |
| 1258 | int found = 0, size = 0, rcode = -1; |
| 1259 | quadlet_t old, new; |
| 1260 | struct arm_request_response *arm_req_resp = NULL; |
| 1261 | |
| 1262 | if (((ext_tcode & 0xFF) == EXTCODE_FETCH_ADD) || |
| 1263 | ((ext_tcode & 0xFF) == EXTCODE_LITTLE_ADD)) { |
| 1264 | DBGMSG("arm_lock called by node: %X " |
| 1265 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X", |
| 1266 | nodeid, (u16) ((addr >> 32) & 0xFFFF), |
| 1267 | (u32) (addr & 0xFFFFFFFF), ext_tcode & 0xFF, |
| 1268 | be32_to_cpu(data)); |
| 1269 | } else { |
| 1270 | DBGMSG("arm_lock called by node: %X " |
| 1271 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X arg: %8.8X", |
| 1272 | nodeid, (u16) ((addr >> 32) & 0xFFFF), |
| 1273 | (u32) (addr & 0xFFFFFFFF), ext_tcode & 0xFF, |
| 1274 | be32_to_cpu(data), be32_to_cpu(arg)); |
| 1275 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1276 | spin_lock_irqsave(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1277 | hi = find_host_info(host); /* search address-entry */ |
| 1278 | if (hi != NULL) { |
| 1279 | list_for_each_entry(fi, &hi->file_info_list, list) { |
| 1280 | entry = fi->addr_list.next; |
| 1281 | while (entry != &(fi->addr_list)) { |
| 1282 | arm_addr = |
| 1283 | list_entry(entry, struct arm_addr, |
| 1284 | addr_list); |
| 1285 | if (((arm_addr->start) <= (addr)) |
| 1286 | && ((arm_addr->end) >= |
| 1287 | (addr + sizeof(*store)))) { |
| 1288 | found = 1; |
| 1289 | break; |
| 1290 | } |
| 1291 | entry = entry->next; |
| 1292 | } |
| 1293 | if (found) { |
| 1294 | break; |
| 1295 | } |
| 1296 | } |
| 1297 | } |
| 1298 | rcode = -1; |
| 1299 | if (!found) { |
| 1300 | printk(KERN_ERR "raw1394: arm_lock FAILED addr_entry not found" |
| 1301 | " -> rcode_address_error\n"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1302 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1303 | return (RCODE_ADDRESS_ERROR); |
| 1304 | } else { |
| 1305 | DBGMSG("arm_lock addr_entry FOUND"); |
| 1306 | } |
| 1307 | if (rcode == -1) { |
| 1308 | if (arm_addr->access_rights & ARM_LOCK) { |
| 1309 | if (!(arm_addr->client_transactions & ARM_LOCK)) { |
| 1310 | memcpy(&old, |
| 1311 | (arm_addr->addr_space_buffer) + (addr - |
| 1312 | (arm_addr-> |
| 1313 | start)), |
| 1314 | sizeof(old)); |
| 1315 | switch (ext_tcode) { |
| 1316 | case (EXTCODE_MASK_SWAP): |
| 1317 | new = data | (old & ~arg); |
| 1318 | break; |
| 1319 | case (EXTCODE_COMPARE_SWAP): |
| 1320 | if (old == arg) { |
| 1321 | new = data; |
| 1322 | } else { |
| 1323 | new = old; |
| 1324 | } |
| 1325 | break; |
| 1326 | case (EXTCODE_FETCH_ADD): |
| 1327 | new = |
| 1328 | cpu_to_be32(be32_to_cpu(data) + |
| 1329 | be32_to_cpu(old)); |
| 1330 | break; |
| 1331 | case (EXTCODE_LITTLE_ADD): |
| 1332 | new = |
| 1333 | cpu_to_le32(le32_to_cpu(data) + |
| 1334 | le32_to_cpu(old)); |
| 1335 | break; |
| 1336 | case (EXTCODE_BOUNDED_ADD): |
| 1337 | if (old != arg) { |
| 1338 | new = |
| 1339 | cpu_to_be32(be32_to_cpu |
| 1340 | (data) + |
| 1341 | be32_to_cpu |
| 1342 | (old)); |
| 1343 | } else { |
| 1344 | new = old; |
| 1345 | } |
| 1346 | break; |
| 1347 | case (EXTCODE_WRAP_ADD): |
| 1348 | if (old != arg) { |
| 1349 | new = |
| 1350 | cpu_to_be32(be32_to_cpu |
| 1351 | (data) + |
| 1352 | be32_to_cpu |
| 1353 | (old)); |
| 1354 | } else { |
| 1355 | new = data; |
| 1356 | } |
| 1357 | break; |
| 1358 | default: |
| 1359 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ |
| 1360 | printk(KERN_ERR |
| 1361 | "raw1394: arm_lock FAILED " |
| 1362 | "ext_tcode not allowed -> rcode_type_error\n"); |
| 1363 | break; |
| 1364 | } /*switch */ |
| 1365 | if (rcode == -1) { |
| 1366 | DBGMSG("arm_lock -> (rcode_complete)"); |
| 1367 | rcode = RCODE_COMPLETE; |
| 1368 | memcpy(store, &old, sizeof(*store)); |
| 1369 | memcpy((arm_addr->addr_space_buffer) + |
| 1370 | (addr - (arm_addr->start)), |
| 1371 | &new, sizeof(*store)); |
| 1372 | } |
| 1373 | } |
| 1374 | } else { |
| 1375 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ |
| 1376 | DBGMSG("arm_lock -> rcode_type_error (access denied)"); |
| 1377 | } |
| 1378 | } |
| 1379 | if (arm_addr->notification_options & ARM_LOCK) { |
| 1380 | byte_t *buf1, *buf2; |
| 1381 | DBGMSG("arm_lock -> entering notification-section"); |
| 1382 | req = __alloc_pending_request(SLAB_ATOMIC); |
| 1383 | if (!req) { |
| 1384 | DBGMSG("arm_lock -> rcode_conflict_error"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1385 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1386 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 1387 | The request may be retried */ |
| 1388 | } |
| 1389 | size = sizeof(struct arm_request) + sizeof(struct arm_response) + 3 * sizeof(*store) + sizeof(struct arm_request_response); /* maximum */ |
| 1390 | req->data = kmalloc(size, SLAB_ATOMIC); |
| 1391 | if (!(req->data)) { |
| 1392 | free_pending_request(req); |
| 1393 | DBGMSG("arm_lock -> rcode_conflict_error"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1394 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1395 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 1396 | The request may be retried */ |
| 1397 | } |
| 1398 | req->free_data = 1; |
| 1399 | arm_req_resp = (struct arm_request_response *)(req->data); |
| 1400 | arm_req = (struct arm_request *)((byte_t *) (req->data) + |
| 1401 | (sizeof |
| 1402 | (struct |
| 1403 | arm_request_response))); |
| 1404 | arm_resp = |
| 1405 | (struct arm_response *)((byte_t *) (arm_req) + |
| 1406 | (sizeof(struct arm_request))); |
| 1407 | buf1 = (byte_t *) arm_resp + sizeof(struct arm_response); |
| 1408 | buf2 = buf1 + 2 * sizeof(*store); |
| 1409 | if ((ext_tcode == EXTCODE_FETCH_ADD) || |
| 1410 | (ext_tcode == EXTCODE_LITTLE_ADD)) { |
| 1411 | arm_req->buffer_length = sizeof(*store); |
| 1412 | memcpy(buf1, &data, sizeof(*store)); |
| 1413 | |
| 1414 | } else { |
| 1415 | arm_req->buffer_length = 2 * sizeof(*store); |
| 1416 | memcpy(buf1, &arg, sizeof(*store)); |
| 1417 | memcpy(buf1 + sizeof(*store), &data, sizeof(*store)); |
| 1418 | } |
| 1419 | if (rcode == RCODE_COMPLETE) { |
| 1420 | arm_resp->buffer_length = sizeof(*store); |
| 1421 | memcpy(buf2, &old, sizeof(*store)); |
| 1422 | } else { |
| 1423 | arm_resp->buffer_length = 0; |
| 1424 | } |
| 1425 | req->file_info = fi; |
| 1426 | req->req.type = RAW1394_REQ_ARM; |
| 1427 | req->req.generation = get_hpsb_generation(host); |
| 1428 | req->req.misc = ((((sizeof(*store)) << 16) & (0xFFFF0000)) | |
| 1429 | (ARM_LOCK & 0xFF)); |
| 1430 | req->req.tag = arm_addr->arm_tag; |
| 1431 | req->req.recvb = arm_addr->recvb; |
| 1432 | req->req.length = size; |
| 1433 | arm_req->generation = req->req.generation; |
| 1434 | arm_req->extended_transaction_code = ext_tcode; |
| 1435 | arm_req->destination_offset = addr; |
| 1436 | arm_req->source_nodeid = nodeid; |
| 1437 | arm_req->destination_nodeid = host->node_id; |
| 1438 | arm_req->tlabel = (flags >> 10) & 0x3f; |
| 1439 | arm_req->tcode = (flags >> 4) & 0x0f; |
| 1440 | arm_resp->response_code = rcode; |
| 1441 | arm_req_resp->request = int2ptr((arm_addr->recvb) + |
| 1442 | sizeof(struct |
| 1443 | arm_request_response)); |
| 1444 | arm_req_resp->response = |
| 1445 | int2ptr((arm_addr->recvb) + |
| 1446 | sizeof(struct arm_request_response) + |
| 1447 | sizeof(struct arm_request)); |
| 1448 | arm_req->buffer = |
| 1449 | int2ptr((arm_addr->recvb) + |
| 1450 | sizeof(struct arm_request_response) + |
| 1451 | sizeof(struct arm_request) + |
| 1452 | sizeof(struct arm_response)); |
| 1453 | arm_resp->buffer = |
| 1454 | int2ptr((arm_addr->recvb) + |
| 1455 | sizeof(struct arm_request_response) + |
| 1456 | sizeof(struct arm_request) + |
| 1457 | sizeof(struct arm_response) + 2 * sizeof(*store)); |
| 1458 | queue_complete_req(req); |
| 1459 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1460 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1461 | return (rcode); |
| 1462 | } |
| 1463 | |
| 1464 | static int arm_lock64(struct hpsb_host *host, int nodeid, octlet_t * store, |
| 1465 | u64 addr, octlet_t data, octlet_t arg, int ext_tcode, |
| 1466 | u16 flags) |
| 1467 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1468 | unsigned long irqflags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1469 | struct pending_request *req; |
| 1470 | struct host_info *hi; |
| 1471 | struct file_info *fi = NULL; |
| 1472 | struct list_head *entry; |
| 1473 | struct arm_addr *arm_addr = NULL; |
| 1474 | struct arm_request *arm_req = NULL; |
| 1475 | struct arm_response *arm_resp = NULL; |
| 1476 | int found = 0, size = 0, rcode = -1; |
| 1477 | octlet_t old, new; |
| 1478 | struct arm_request_response *arm_req_resp = NULL; |
| 1479 | |
| 1480 | if (((ext_tcode & 0xFF) == EXTCODE_FETCH_ADD) || |
| 1481 | ((ext_tcode & 0xFF) == EXTCODE_LITTLE_ADD)) { |
| 1482 | DBGMSG("arm_lock64 called by node: %X " |
| 1483 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X %8.8X ", |
| 1484 | nodeid, (u16) ((addr >> 32) & 0xFFFF), |
| 1485 | (u32) (addr & 0xFFFFFFFF), |
| 1486 | ext_tcode & 0xFF, |
| 1487 | (u32) ((be64_to_cpu(data) >> 32) & 0xFFFFFFFF), |
| 1488 | (u32) (be64_to_cpu(data) & 0xFFFFFFFF)); |
| 1489 | } else { |
| 1490 | DBGMSG("arm_lock64 called by node: %X " |
| 1491 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X %8.8X arg: " |
| 1492 | "%8.8X %8.8X ", |
| 1493 | nodeid, (u16) ((addr >> 32) & 0xFFFF), |
| 1494 | (u32) (addr & 0xFFFFFFFF), |
| 1495 | ext_tcode & 0xFF, |
| 1496 | (u32) ((be64_to_cpu(data) >> 32) & 0xFFFFFFFF), |
| 1497 | (u32) (be64_to_cpu(data) & 0xFFFFFFFF), |
| 1498 | (u32) ((be64_to_cpu(arg) >> 32) & 0xFFFFFFFF), |
| 1499 | (u32) (be64_to_cpu(arg) & 0xFFFFFFFF)); |
| 1500 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1501 | spin_lock_irqsave(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1502 | hi = find_host_info(host); /* search addressentry in file_info's for host */ |
| 1503 | if (hi != NULL) { |
| 1504 | list_for_each_entry(fi, &hi->file_info_list, list) { |
| 1505 | entry = fi->addr_list.next; |
| 1506 | while (entry != &(fi->addr_list)) { |
| 1507 | arm_addr = |
| 1508 | list_entry(entry, struct arm_addr, |
| 1509 | addr_list); |
| 1510 | if (((arm_addr->start) <= (addr)) |
| 1511 | && ((arm_addr->end) >= |
| 1512 | (addr + sizeof(*store)))) { |
| 1513 | found = 1; |
| 1514 | break; |
| 1515 | } |
| 1516 | entry = entry->next; |
| 1517 | } |
| 1518 | if (found) { |
| 1519 | break; |
| 1520 | } |
| 1521 | } |
| 1522 | } |
| 1523 | rcode = -1; |
| 1524 | if (!found) { |
| 1525 | printk(KERN_ERR |
| 1526 | "raw1394: arm_lock64 FAILED addr_entry not found" |
| 1527 | " -> rcode_address_error\n"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1528 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1529 | return (RCODE_ADDRESS_ERROR); |
| 1530 | } else { |
| 1531 | DBGMSG("arm_lock64 addr_entry FOUND"); |
| 1532 | } |
| 1533 | if (rcode == -1) { |
| 1534 | if (arm_addr->access_rights & ARM_LOCK) { |
| 1535 | if (!(arm_addr->client_transactions & ARM_LOCK)) { |
| 1536 | memcpy(&old, |
| 1537 | (arm_addr->addr_space_buffer) + (addr - |
| 1538 | (arm_addr-> |
| 1539 | start)), |
| 1540 | sizeof(old)); |
| 1541 | switch (ext_tcode) { |
| 1542 | case (EXTCODE_MASK_SWAP): |
| 1543 | new = data | (old & ~arg); |
| 1544 | break; |
| 1545 | case (EXTCODE_COMPARE_SWAP): |
| 1546 | if (old == arg) { |
| 1547 | new = data; |
| 1548 | } else { |
| 1549 | new = old; |
| 1550 | } |
| 1551 | break; |
| 1552 | case (EXTCODE_FETCH_ADD): |
| 1553 | new = |
| 1554 | cpu_to_be64(be64_to_cpu(data) + |
| 1555 | be64_to_cpu(old)); |
| 1556 | break; |
| 1557 | case (EXTCODE_LITTLE_ADD): |
| 1558 | new = |
| 1559 | cpu_to_le64(le64_to_cpu(data) + |
| 1560 | le64_to_cpu(old)); |
| 1561 | break; |
| 1562 | case (EXTCODE_BOUNDED_ADD): |
| 1563 | if (old != arg) { |
| 1564 | new = |
| 1565 | cpu_to_be64(be64_to_cpu |
| 1566 | (data) + |
| 1567 | be64_to_cpu |
| 1568 | (old)); |
| 1569 | } else { |
| 1570 | new = old; |
| 1571 | } |
| 1572 | break; |
| 1573 | case (EXTCODE_WRAP_ADD): |
| 1574 | if (old != arg) { |
| 1575 | new = |
| 1576 | cpu_to_be64(be64_to_cpu |
| 1577 | (data) + |
| 1578 | be64_to_cpu |
| 1579 | (old)); |
| 1580 | } else { |
| 1581 | new = data; |
| 1582 | } |
| 1583 | break; |
| 1584 | default: |
| 1585 | printk(KERN_ERR |
| 1586 | "raw1394: arm_lock64 FAILED " |
| 1587 | "ext_tcode not allowed -> rcode_type_error\n"); |
| 1588 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ |
| 1589 | break; |
| 1590 | } /*switch */ |
| 1591 | if (rcode == -1) { |
| 1592 | DBGMSG |
| 1593 | ("arm_lock64 -> (rcode_complete)"); |
| 1594 | rcode = RCODE_COMPLETE; |
| 1595 | memcpy(store, &old, sizeof(*store)); |
| 1596 | memcpy((arm_addr->addr_space_buffer) + |
| 1597 | (addr - (arm_addr->start)), |
| 1598 | &new, sizeof(*store)); |
| 1599 | } |
| 1600 | } |
| 1601 | } else { |
| 1602 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ |
| 1603 | DBGMSG |
| 1604 | ("arm_lock64 -> rcode_type_error (access denied)"); |
| 1605 | } |
| 1606 | } |
| 1607 | if (arm_addr->notification_options & ARM_LOCK) { |
| 1608 | byte_t *buf1, *buf2; |
| 1609 | DBGMSG("arm_lock64 -> entering notification-section"); |
| 1610 | req = __alloc_pending_request(SLAB_ATOMIC); |
| 1611 | if (!req) { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1612 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1613 | DBGMSG("arm_lock64 -> rcode_conflict_error"); |
| 1614 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 1615 | The request may be retried */ |
| 1616 | } |
| 1617 | size = sizeof(struct arm_request) + sizeof(struct arm_response) + 3 * sizeof(*store) + sizeof(struct arm_request_response); /* maximum */ |
| 1618 | req->data = kmalloc(size, SLAB_ATOMIC); |
| 1619 | if (!(req->data)) { |
| 1620 | free_pending_request(req); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1621 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1622 | DBGMSG("arm_lock64 -> rcode_conflict_error"); |
| 1623 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 1624 | The request may be retried */ |
| 1625 | } |
| 1626 | req->free_data = 1; |
| 1627 | arm_req_resp = (struct arm_request_response *)(req->data); |
| 1628 | arm_req = (struct arm_request *)((byte_t *) (req->data) + |
| 1629 | (sizeof |
| 1630 | (struct |
| 1631 | arm_request_response))); |
| 1632 | arm_resp = |
| 1633 | (struct arm_response *)((byte_t *) (arm_req) + |
| 1634 | (sizeof(struct arm_request))); |
| 1635 | buf1 = (byte_t *) arm_resp + sizeof(struct arm_response); |
| 1636 | buf2 = buf1 + 2 * sizeof(*store); |
| 1637 | if ((ext_tcode == EXTCODE_FETCH_ADD) || |
| 1638 | (ext_tcode == EXTCODE_LITTLE_ADD)) { |
| 1639 | arm_req->buffer_length = sizeof(*store); |
| 1640 | memcpy(buf1, &data, sizeof(*store)); |
| 1641 | |
| 1642 | } else { |
| 1643 | arm_req->buffer_length = 2 * sizeof(*store); |
| 1644 | memcpy(buf1, &arg, sizeof(*store)); |
| 1645 | memcpy(buf1 + sizeof(*store), &data, sizeof(*store)); |
| 1646 | } |
| 1647 | if (rcode == RCODE_COMPLETE) { |
| 1648 | arm_resp->buffer_length = sizeof(*store); |
| 1649 | memcpy(buf2, &old, sizeof(*store)); |
| 1650 | } else { |
| 1651 | arm_resp->buffer_length = 0; |
| 1652 | } |
| 1653 | req->file_info = fi; |
| 1654 | req->req.type = RAW1394_REQ_ARM; |
| 1655 | req->req.generation = get_hpsb_generation(host); |
| 1656 | req->req.misc = ((((sizeof(*store)) << 16) & (0xFFFF0000)) | |
| 1657 | (ARM_LOCK & 0xFF)); |
| 1658 | req->req.tag = arm_addr->arm_tag; |
| 1659 | req->req.recvb = arm_addr->recvb; |
| 1660 | req->req.length = size; |
| 1661 | arm_req->generation = req->req.generation; |
| 1662 | arm_req->extended_transaction_code = ext_tcode; |
| 1663 | arm_req->destination_offset = addr; |
| 1664 | arm_req->source_nodeid = nodeid; |
| 1665 | arm_req->destination_nodeid = host->node_id; |
| 1666 | arm_req->tlabel = (flags >> 10) & 0x3f; |
| 1667 | arm_req->tcode = (flags >> 4) & 0x0f; |
| 1668 | arm_resp->response_code = rcode; |
| 1669 | arm_req_resp->request = int2ptr((arm_addr->recvb) + |
| 1670 | sizeof(struct |
| 1671 | arm_request_response)); |
| 1672 | arm_req_resp->response = |
| 1673 | int2ptr((arm_addr->recvb) + |
| 1674 | sizeof(struct arm_request_response) + |
| 1675 | sizeof(struct arm_request)); |
| 1676 | arm_req->buffer = |
| 1677 | int2ptr((arm_addr->recvb) + |
| 1678 | sizeof(struct arm_request_response) + |
| 1679 | sizeof(struct arm_request) + |
| 1680 | sizeof(struct arm_response)); |
| 1681 | arm_resp->buffer = |
| 1682 | int2ptr((arm_addr->recvb) + |
| 1683 | sizeof(struct arm_request_response) + |
| 1684 | sizeof(struct arm_request) + |
| 1685 | sizeof(struct arm_response) + 2 * sizeof(*store)); |
| 1686 | queue_complete_req(req); |
| 1687 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1688 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1689 | return (rcode); |
| 1690 | } |
| 1691 | |
| 1692 | static int arm_register(struct file_info *fi, struct pending_request *req) |
| 1693 | { |
| 1694 | int retval; |
| 1695 | struct arm_addr *addr; |
| 1696 | struct host_info *hi; |
| 1697 | struct file_info *fi_hlp = NULL; |
| 1698 | struct list_head *entry; |
| 1699 | struct arm_addr *arm_addr = NULL; |
| 1700 | int same_host, another_host; |
| 1701 | unsigned long flags; |
| 1702 | |
| 1703 | DBGMSG("arm_register called " |
| 1704 | "addr(Offset): %8.8x %8.8x length: %u " |
| 1705 | "rights: %2.2X notify: %2.2X " |
| 1706 | "max_blk_len: %4.4X", |
| 1707 | (u32) ((req->req.address >> 32) & 0xFFFF), |
| 1708 | (u32) (req->req.address & 0xFFFFFFFF), |
| 1709 | req->req.length, ((req->req.misc >> 8) & 0xFF), |
| 1710 | (req->req.misc & 0xFF), ((req->req.misc >> 16) & 0xFFFF)); |
| 1711 | /* check addressrange */ |
| 1712 | if ((((req->req.address) & ~(0xFFFFFFFFFFFFULL)) != 0) || |
| 1713 | (((req->req.address + req->req.length) & ~(0xFFFFFFFFFFFFULL)) != |
| 1714 | 0)) { |
| 1715 | req->req.length = 0; |
| 1716 | return (-EINVAL); |
| 1717 | } |
| 1718 | /* addr-list-entry for fileinfo */ |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 1719 | addr = kmalloc(sizeof(*addr), SLAB_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1720 | if (!addr) { |
| 1721 | req->req.length = 0; |
| 1722 | return (-ENOMEM); |
| 1723 | } |
| 1724 | /* allocation of addr_space_buffer */ |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 1725 | addr->addr_space_buffer = vmalloc(req->req.length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1726 | if (!(addr->addr_space_buffer)) { |
| 1727 | kfree(addr); |
| 1728 | req->req.length = 0; |
| 1729 | return (-ENOMEM); |
| 1730 | } |
| 1731 | /* initialization of addr_space_buffer */ |
| 1732 | if ((req->req.sendb) == (unsigned long)NULL) { |
| 1733 | /* init: set 0 */ |
| 1734 | memset(addr->addr_space_buffer, 0, req->req.length); |
| 1735 | } else { |
| 1736 | /* init: user -> kernel */ |
| 1737 | if (copy_from_user |
| 1738 | (addr->addr_space_buffer, int2ptr(req->req.sendb), |
| 1739 | req->req.length)) { |
| 1740 | vfree(addr->addr_space_buffer); |
| 1741 | kfree(addr); |
| 1742 | return (-EFAULT); |
| 1743 | } |
| 1744 | } |
| 1745 | INIT_LIST_HEAD(&addr->addr_list); |
| 1746 | addr->arm_tag = req->req.tag; |
| 1747 | addr->start = req->req.address; |
| 1748 | addr->end = req->req.address + req->req.length; |
| 1749 | addr->access_rights = (u8) (req->req.misc & 0x0F); |
| 1750 | addr->notification_options = (u8) ((req->req.misc >> 4) & 0x0F); |
| 1751 | addr->client_transactions = (u8) ((req->req.misc >> 8) & 0x0F); |
| 1752 | addr->access_rights |= addr->client_transactions; |
| 1753 | addr->notification_options |= addr->client_transactions; |
| 1754 | addr->recvb = req->req.recvb; |
| 1755 | addr->rec_length = (u16) ((req->req.misc >> 16) & 0xFFFF); |
| 1756 | spin_lock_irqsave(&host_info_lock, flags); |
| 1757 | hi = find_host_info(fi->host); |
| 1758 | same_host = 0; |
| 1759 | another_host = 0; |
| 1760 | /* same host with address-entry containing same addressrange ? */ |
| 1761 | list_for_each_entry(fi_hlp, &hi->file_info_list, list) { |
| 1762 | entry = fi_hlp->addr_list.next; |
| 1763 | while (entry != &(fi_hlp->addr_list)) { |
| 1764 | arm_addr = |
| 1765 | list_entry(entry, struct arm_addr, addr_list); |
| 1766 | if ((arm_addr->start == addr->start) |
| 1767 | && (arm_addr->end == addr->end)) { |
| 1768 | DBGMSG("same host ownes same " |
| 1769 | "addressrange -> EALREADY"); |
| 1770 | same_host = 1; |
| 1771 | break; |
| 1772 | } |
| 1773 | entry = entry->next; |
| 1774 | } |
| 1775 | if (same_host) { |
| 1776 | break; |
| 1777 | } |
| 1778 | } |
| 1779 | if (same_host) { |
| 1780 | /* addressrange occupied by same host */ |
| 1781 | vfree(addr->addr_space_buffer); |
| 1782 | kfree(addr); |
| 1783 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1784 | return (-EALREADY); |
| 1785 | } |
| 1786 | /* another host with valid address-entry containing same addressrange */ |
| 1787 | list_for_each_entry(hi, &host_info_list, list) { |
| 1788 | if (hi->host != fi->host) { |
| 1789 | list_for_each_entry(fi_hlp, &hi->file_info_list, list) { |
| 1790 | entry = fi_hlp->addr_list.next; |
| 1791 | while (entry != &(fi_hlp->addr_list)) { |
| 1792 | arm_addr = |
| 1793 | list_entry(entry, struct arm_addr, |
| 1794 | addr_list); |
| 1795 | if ((arm_addr->start == addr->start) |
| 1796 | && (arm_addr->end == addr->end)) { |
| 1797 | DBGMSG |
| 1798 | ("another host ownes same " |
| 1799 | "addressrange"); |
| 1800 | another_host = 1; |
| 1801 | break; |
| 1802 | } |
| 1803 | entry = entry->next; |
| 1804 | } |
| 1805 | if (another_host) { |
| 1806 | break; |
| 1807 | } |
| 1808 | } |
| 1809 | } |
| 1810 | } |
| 1811 | if (another_host) { |
| 1812 | DBGMSG("another hosts entry is valid -> SUCCESS"); |
| 1813 | if (copy_to_user(int2ptr(req->req.recvb), |
| 1814 | &addr->start, sizeof(u64))) { |
| 1815 | printk(KERN_ERR "raw1394: arm_register failed " |
| 1816 | " address-range-entry is invalid -> EFAULT !!!\n"); |
| 1817 | vfree(addr->addr_space_buffer); |
| 1818 | kfree(addr); |
| 1819 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1820 | return (-EFAULT); |
| 1821 | } |
| 1822 | free_pending_request(req); /* immediate success or fail */ |
| 1823 | /* INSERT ENTRY */ |
| 1824 | list_add_tail(&addr->addr_list, &fi->addr_list); |
| 1825 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1826 | return sizeof(struct raw1394_request); |
| 1827 | } |
| 1828 | retval = |
| 1829 | hpsb_register_addrspace(&raw1394_highlevel, fi->host, &arm_ops, |
| 1830 | req->req.address, |
| 1831 | req->req.address + req->req.length); |
| 1832 | if (retval) { |
| 1833 | /* INSERT ENTRY */ |
| 1834 | list_add_tail(&addr->addr_list, &fi->addr_list); |
| 1835 | } else { |
| 1836 | DBGMSG("arm_register failed errno: %d \n", retval); |
| 1837 | vfree(addr->addr_space_buffer); |
| 1838 | kfree(addr); |
| 1839 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1840 | return (-EALREADY); |
| 1841 | } |
| 1842 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1843 | free_pending_request(req); /* immediate success or fail */ |
| 1844 | return sizeof(struct raw1394_request); |
| 1845 | } |
| 1846 | |
| 1847 | static int arm_unregister(struct file_info *fi, struct pending_request *req) |
| 1848 | { |
| 1849 | int found = 0; |
| 1850 | int retval = 0; |
| 1851 | struct list_head *entry; |
| 1852 | struct arm_addr *addr = NULL; |
| 1853 | struct host_info *hi; |
| 1854 | struct file_info *fi_hlp = NULL; |
| 1855 | struct arm_addr *arm_addr = NULL; |
| 1856 | int another_host; |
| 1857 | unsigned long flags; |
| 1858 | |
| 1859 | DBGMSG("arm_Unregister called addr(Offset): " |
| 1860 | "%8.8x %8.8x", |
| 1861 | (u32) ((req->req.address >> 32) & 0xFFFF), |
| 1862 | (u32) (req->req.address & 0xFFFFFFFF)); |
| 1863 | spin_lock_irqsave(&host_info_lock, flags); |
| 1864 | /* get addr */ |
| 1865 | entry = fi->addr_list.next; |
| 1866 | while (entry != &(fi->addr_list)) { |
| 1867 | addr = list_entry(entry, struct arm_addr, addr_list); |
| 1868 | if (addr->start == req->req.address) { |
| 1869 | found = 1; |
| 1870 | break; |
| 1871 | } |
| 1872 | entry = entry->next; |
| 1873 | } |
| 1874 | if (!found) { |
| 1875 | DBGMSG("arm_Unregister addr not found"); |
| 1876 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1877 | return (-EINVAL); |
| 1878 | } |
| 1879 | DBGMSG("arm_Unregister addr found"); |
| 1880 | another_host = 0; |
| 1881 | /* another host with valid address-entry containing |
| 1882 | same addressrange */ |
| 1883 | list_for_each_entry(hi, &host_info_list, list) { |
| 1884 | if (hi->host != fi->host) { |
| 1885 | list_for_each_entry(fi_hlp, &hi->file_info_list, list) { |
| 1886 | entry = fi_hlp->addr_list.next; |
| 1887 | while (entry != &(fi_hlp->addr_list)) { |
| 1888 | arm_addr = list_entry(entry, |
| 1889 | struct arm_addr, |
| 1890 | addr_list); |
| 1891 | if (arm_addr->start == addr->start) { |
| 1892 | DBGMSG("another host ownes " |
| 1893 | "same addressrange"); |
| 1894 | another_host = 1; |
| 1895 | break; |
| 1896 | } |
| 1897 | entry = entry->next; |
| 1898 | } |
| 1899 | if (another_host) { |
| 1900 | break; |
| 1901 | } |
| 1902 | } |
| 1903 | } |
| 1904 | } |
| 1905 | if (another_host) { |
| 1906 | DBGMSG("delete entry from list -> success"); |
| 1907 | list_del(&addr->addr_list); |
| 1908 | vfree(addr->addr_space_buffer); |
| 1909 | kfree(addr); |
| 1910 | free_pending_request(req); /* immediate success or fail */ |
| 1911 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1912 | return sizeof(struct raw1394_request); |
| 1913 | } |
| 1914 | retval = |
| 1915 | hpsb_unregister_addrspace(&raw1394_highlevel, fi->host, |
| 1916 | addr->start); |
| 1917 | if (!retval) { |
| 1918 | printk(KERN_ERR "raw1394: arm_Unregister failed -> EINVAL\n"); |
| 1919 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1920 | return (-EINVAL); |
| 1921 | } |
| 1922 | DBGMSG("delete entry from list -> success"); |
| 1923 | list_del(&addr->addr_list); |
| 1924 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1925 | vfree(addr->addr_space_buffer); |
| 1926 | kfree(addr); |
| 1927 | free_pending_request(req); /* immediate success or fail */ |
| 1928 | return sizeof(struct raw1394_request); |
| 1929 | } |
| 1930 | |
| 1931 | /* Copy data from ARM buffer(s) to user buffer. */ |
| 1932 | static int arm_get_buf(struct file_info *fi, struct pending_request *req) |
| 1933 | { |
| 1934 | struct arm_addr *arm_addr = NULL; |
| 1935 | unsigned long flags; |
| 1936 | unsigned long offset; |
| 1937 | |
| 1938 | struct list_head *entry; |
| 1939 | |
| 1940 | DBGMSG("arm_get_buf " |
| 1941 | "addr(Offset): %04X %08X length: %u", |
| 1942 | (u32) ((req->req.address >> 32) & 0xFFFF), |
| 1943 | (u32) (req->req.address & 0xFFFFFFFF), (u32) req->req.length); |
| 1944 | |
| 1945 | spin_lock_irqsave(&host_info_lock, flags); |
| 1946 | entry = fi->addr_list.next; |
| 1947 | while (entry != &(fi->addr_list)) { |
| 1948 | arm_addr = list_entry(entry, struct arm_addr, addr_list); |
| 1949 | if ((arm_addr->start <= req->req.address) && |
| 1950 | (arm_addr->end > req->req.address)) { |
| 1951 | if (req->req.address + req->req.length <= arm_addr->end) { |
| 1952 | offset = req->req.address - arm_addr->start; |
| 1953 | |
| 1954 | DBGMSG |
| 1955 | ("arm_get_buf copy_to_user( %08X, %p, %u )", |
| 1956 | (u32) req->req.recvb, |
| 1957 | arm_addr->addr_space_buffer + offset, |
| 1958 | (u32) req->req.length); |
| 1959 | |
| 1960 | if (copy_to_user |
| 1961 | (int2ptr(req->req.recvb), |
| 1962 | arm_addr->addr_space_buffer + offset, |
| 1963 | req->req.length)) { |
| 1964 | spin_unlock_irqrestore(&host_info_lock, |
| 1965 | flags); |
| 1966 | return (-EFAULT); |
| 1967 | } |
| 1968 | |
| 1969 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1970 | /* We have to free the request, because we |
| 1971 | * queue no response, and therefore nobody |
| 1972 | * will free it. */ |
| 1973 | free_pending_request(req); |
| 1974 | return sizeof(struct raw1394_request); |
| 1975 | } else { |
| 1976 | DBGMSG("arm_get_buf request exceeded mapping"); |
| 1977 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1978 | return (-EINVAL); |
| 1979 | } |
| 1980 | } |
| 1981 | entry = entry->next; |
| 1982 | } |
| 1983 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1984 | return (-EINVAL); |
| 1985 | } |
| 1986 | |
| 1987 | /* Copy data from user buffer to ARM buffer(s). */ |
| 1988 | static int arm_set_buf(struct file_info *fi, struct pending_request *req) |
| 1989 | { |
| 1990 | struct arm_addr *arm_addr = NULL; |
| 1991 | unsigned long flags; |
| 1992 | unsigned long offset; |
| 1993 | |
| 1994 | struct list_head *entry; |
| 1995 | |
| 1996 | DBGMSG("arm_set_buf " |
| 1997 | "addr(Offset): %04X %08X length: %u", |
| 1998 | (u32) ((req->req.address >> 32) & 0xFFFF), |
| 1999 | (u32) (req->req.address & 0xFFFFFFFF), (u32) req->req.length); |
| 2000 | |
| 2001 | spin_lock_irqsave(&host_info_lock, flags); |
| 2002 | entry = fi->addr_list.next; |
| 2003 | while (entry != &(fi->addr_list)) { |
| 2004 | arm_addr = list_entry(entry, struct arm_addr, addr_list); |
| 2005 | if ((arm_addr->start <= req->req.address) && |
| 2006 | (arm_addr->end > req->req.address)) { |
| 2007 | if (req->req.address + req->req.length <= arm_addr->end) { |
| 2008 | offset = req->req.address - arm_addr->start; |
| 2009 | |
| 2010 | DBGMSG |
| 2011 | ("arm_set_buf copy_from_user( %p, %08X, %u )", |
| 2012 | arm_addr->addr_space_buffer + offset, |
| 2013 | (u32) req->req.sendb, |
| 2014 | (u32) req->req.length); |
| 2015 | |
| 2016 | if (copy_from_user |
| 2017 | (arm_addr->addr_space_buffer + offset, |
| 2018 | int2ptr(req->req.sendb), |
| 2019 | req->req.length)) { |
| 2020 | spin_unlock_irqrestore(&host_info_lock, |
| 2021 | flags); |
| 2022 | return (-EFAULT); |
| 2023 | } |
| 2024 | |
| 2025 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 2026 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ |
| 2027 | return sizeof(struct raw1394_request); |
| 2028 | } else { |
| 2029 | DBGMSG("arm_set_buf request exceeded mapping"); |
| 2030 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 2031 | return (-EINVAL); |
| 2032 | } |
| 2033 | } |
| 2034 | entry = entry->next; |
| 2035 | } |
| 2036 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 2037 | return (-EINVAL); |
| 2038 | } |
| 2039 | |
| 2040 | static int reset_notification(struct file_info *fi, struct pending_request *req) |
| 2041 | { |
| 2042 | DBGMSG("reset_notification called - switch %s ", |
| 2043 | (req->req.misc == RAW1394_NOTIFY_OFF) ? "OFF" : "ON"); |
| 2044 | if ((req->req.misc == RAW1394_NOTIFY_OFF) || |
| 2045 | (req->req.misc == RAW1394_NOTIFY_ON)) { |
| 2046 | fi->notification = (u8) req->req.misc; |
| 2047 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ |
| 2048 | return sizeof(struct raw1394_request); |
| 2049 | } |
| 2050 | /* error EINVAL (22) invalid argument */ |
| 2051 | return (-EINVAL); |
| 2052 | } |
| 2053 | |
| 2054 | static int write_phypacket(struct file_info *fi, struct pending_request *req) |
| 2055 | { |
| 2056 | struct hpsb_packet *packet = NULL; |
| 2057 | int retval = 0; |
| 2058 | quadlet_t data; |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2059 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2060 | |
| 2061 | data = be32_to_cpu((u32) req->req.sendb); |
| 2062 | DBGMSG("write_phypacket called - quadlet 0x%8.8x ", data); |
| 2063 | packet = hpsb_make_phypacket(fi->host, data); |
| 2064 | if (!packet) |
| 2065 | return -ENOMEM; |
| 2066 | req->req.length = 0; |
| 2067 | req->packet = packet; |
| 2068 | hpsb_set_packet_complete_task(packet, |
| 2069 | (void (*)(void *))queue_complete_cb, req); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2070 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2071 | list_add_tail(&req->list, &fi->req_pending); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2072 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2073 | packet->generation = req->req.generation; |
| 2074 | retval = hpsb_send_packet(packet); |
| 2075 | DBGMSG("write_phypacket send_packet called => retval: %d ", retval); |
| 2076 | if (retval < 0) { |
| 2077 | req->req.error = RAW1394_ERROR_SEND_ERROR; |
| 2078 | req->req.length = 0; |
| 2079 | queue_complete_req(req); |
| 2080 | } |
| 2081 | return sizeof(struct raw1394_request); |
| 2082 | } |
| 2083 | |
| 2084 | static int get_config_rom(struct file_info *fi, struct pending_request *req) |
| 2085 | { |
| 2086 | int ret = sizeof(struct raw1394_request); |
| 2087 | quadlet_t *data = kmalloc(req->req.length, SLAB_KERNEL); |
| 2088 | int status; |
| 2089 | |
| 2090 | if (!data) |
| 2091 | return -ENOMEM; |
| 2092 | |
| 2093 | status = |
| 2094 | csr1212_read(fi->host->csr.rom, CSR1212_CONFIG_ROM_SPACE_OFFSET, |
| 2095 | data, req->req.length); |
| 2096 | if (copy_to_user(int2ptr(req->req.recvb), data, req->req.length)) |
| 2097 | ret = -EFAULT; |
| 2098 | if (copy_to_user |
| 2099 | (int2ptr(req->req.tag), &fi->host->csr.rom->cache_head->len, |
| 2100 | sizeof(fi->host->csr.rom->cache_head->len))) |
| 2101 | ret = -EFAULT; |
| 2102 | if (copy_to_user(int2ptr(req->req.address), &fi->host->csr.generation, |
| 2103 | sizeof(fi->host->csr.generation))) |
| 2104 | ret = -EFAULT; |
| 2105 | if (copy_to_user(int2ptr(req->req.sendb), &status, sizeof(status))) |
| 2106 | ret = -EFAULT; |
| 2107 | kfree(data); |
| 2108 | if (ret >= 0) { |
| 2109 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ |
| 2110 | } |
| 2111 | return ret; |
| 2112 | } |
| 2113 | |
| 2114 | static int update_config_rom(struct file_info *fi, struct pending_request *req) |
| 2115 | { |
| 2116 | int ret = sizeof(struct raw1394_request); |
| 2117 | quadlet_t *data = kmalloc(req->req.length, SLAB_KERNEL); |
| 2118 | if (!data) |
| 2119 | return -ENOMEM; |
| 2120 | if (copy_from_user(data, int2ptr(req->req.sendb), req->req.length)) { |
| 2121 | ret = -EFAULT; |
| 2122 | } else { |
| 2123 | int status = hpsb_update_config_rom(fi->host, |
| 2124 | data, req->req.length, |
| 2125 | (unsigned char)req->req. |
| 2126 | misc); |
| 2127 | if (copy_to_user |
| 2128 | (int2ptr(req->req.recvb), &status, sizeof(status))) |
| 2129 | ret = -ENOMEM; |
| 2130 | } |
| 2131 | kfree(data); |
| 2132 | if (ret >= 0) { |
| 2133 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ |
| 2134 | fi->cfgrom_upd = 1; |
| 2135 | } |
| 2136 | return ret; |
| 2137 | } |
| 2138 | |
| 2139 | static int modify_config_rom(struct file_info *fi, struct pending_request *req) |
| 2140 | { |
| 2141 | struct csr1212_keyval *kv; |
| 2142 | struct csr1212_csr_rom_cache *cache; |
| 2143 | struct csr1212_dentry *dentry; |
| 2144 | u32 dr; |
| 2145 | int ret = 0; |
| 2146 | |
| 2147 | if (req->req.misc == ~0) { |
| 2148 | if (req->req.length == 0) |
| 2149 | return -EINVAL; |
| 2150 | |
| 2151 | /* Find an unused slot */ |
| 2152 | for (dr = 0; |
| 2153 | dr < RAW1394_MAX_USER_CSR_DIRS && fi->csr1212_dirs[dr]; |
| 2154 | dr++) ; |
| 2155 | |
| 2156 | if (dr == RAW1394_MAX_USER_CSR_DIRS) |
| 2157 | return -ENOMEM; |
| 2158 | |
| 2159 | fi->csr1212_dirs[dr] = |
| 2160 | csr1212_new_directory(CSR1212_KV_ID_VENDOR); |
| 2161 | if (!fi->csr1212_dirs[dr]) |
| 2162 | return -ENOMEM; |
| 2163 | } else { |
| 2164 | dr = req->req.misc; |
| 2165 | if (!fi->csr1212_dirs[dr]) |
| 2166 | return -EINVAL; |
| 2167 | |
| 2168 | /* Delete old stuff */ |
| 2169 | for (dentry = |
| 2170 | fi->csr1212_dirs[dr]->value.directory.dentries_head; |
| 2171 | dentry; dentry = dentry->next) { |
| 2172 | csr1212_detach_keyval_from_directory(fi->host->csr.rom-> |
| 2173 | root_kv, |
| 2174 | dentry->kv); |
| 2175 | } |
| 2176 | |
| 2177 | if (req->req.length == 0) { |
| 2178 | csr1212_release_keyval(fi->csr1212_dirs[dr]); |
| 2179 | fi->csr1212_dirs[dr] = NULL; |
| 2180 | |
| 2181 | hpsb_update_config_rom_image(fi->host); |
| 2182 | free_pending_request(req); |
| 2183 | return sizeof(struct raw1394_request); |
| 2184 | } |
| 2185 | } |
| 2186 | |
| 2187 | cache = csr1212_rom_cache_malloc(0, req->req.length); |
| 2188 | if (!cache) { |
| 2189 | csr1212_release_keyval(fi->csr1212_dirs[dr]); |
| 2190 | fi->csr1212_dirs[dr] = NULL; |
| 2191 | return -ENOMEM; |
| 2192 | } |
| 2193 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 2194 | cache->filled_head = kmalloc(sizeof(*cache->filled_head), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2195 | if (!cache->filled_head) { |
| 2196 | csr1212_release_keyval(fi->csr1212_dirs[dr]); |
| 2197 | fi->csr1212_dirs[dr] = NULL; |
| 2198 | CSR1212_FREE(cache); |
| 2199 | return -ENOMEM; |
| 2200 | } |
| 2201 | cache->filled_tail = cache->filled_head; |
| 2202 | |
| 2203 | if (copy_from_user(cache->data, int2ptr(req->req.sendb), |
| 2204 | req->req.length)) { |
| 2205 | csr1212_release_keyval(fi->csr1212_dirs[dr]); |
| 2206 | fi->csr1212_dirs[dr] = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2207 | ret = -EFAULT; |
| 2208 | } else { |
| 2209 | cache->len = req->req.length; |
| 2210 | cache->filled_head->offset_start = 0; |
| 2211 | cache->filled_head->offset_end = cache->size - 1; |
| 2212 | |
| 2213 | cache->layout_head = cache->layout_tail = fi->csr1212_dirs[dr]; |
| 2214 | |
| 2215 | ret = CSR1212_SUCCESS; |
| 2216 | /* parse all the items */ |
| 2217 | for (kv = cache->layout_head; ret == CSR1212_SUCCESS && kv; |
| 2218 | kv = kv->next) { |
| 2219 | ret = csr1212_parse_keyval(kv, cache); |
| 2220 | } |
| 2221 | |
| 2222 | /* attach top level items to the root directory */ |
| 2223 | for (dentry = |
| 2224 | fi->csr1212_dirs[dr]->value.directory.dentries_head; |
| 2225 | ret == CSR1212_SUCCESS && dentry; dentry = dentry->next) { |
| 2226 | ret = |
| 2227 | csr1212_attach_keyval_to_directory(fi->host->csr. |
| 2228 | rom->root_kv, |
| 2229 | dentry->kv); |
| 2230 | } |
| 2231 | |
| 2232 | if (ret == CSR1212_SUCCESS) { |
| 2233 | ret = hpsb_update_config_rom_image(fi->host); |
| 2234 | |
| 2235 | if (ret >= 0 && copy_to_user(int2ptr(req->req.recvb), |
| 2236 | &dr, sizeof(dr))) { |
| 2237 | ret = -ENOMEM; |
| 2238 | } |
| 2239 | } |
| 2240 | } |
| 2241 | kfree(cache->filled_head); |
Stefan Richter | b12479d | 2005-11-21 17:32:18 -0500 | [diff] [blame] | 2242 | CSR1212_FREE(cache); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2243 | |
| 2244 | if (ret >= 0) { |
| 2245 | /* we have to free the request, because we queue no response, |
| 2246 | * and therefore nobody will free it */ |
| 2247 | free_pending_request(req); |
| 2248 | return sizeof(struct raw1394_request); |
| 2249 | } else { |
| 2250 | for (dentry = |
| 2251 | fi->csr1212_dirs[dr]->value.directory.dentries_head; |
| 2252 | dentry; dentry = dentry->next) { |
| 2253 | csr1212_detach_keyval_from_directory(fi->host->csr.rom-> |
| 2254 | root_kv, |
| 2255 | dentry->kv); |
| 2256 | } |
| 2257 | csr1212_release_keyval(fi->csr1212_dirs[dr]); |
| 2258 | fi->csr1212_dirs[dr] = NULL; |
| 2259 | return ret; |
| 2260 | } |
| 2261 | } |
| 2262 | |
| 2263 | static int state_connected(struct file_info *fi, struct pending_request *req) |
| 2264 | { |
| 2265 | int node = req->req.address >> 48; |
| 2266 | |
| 2267 | req->req.error = RAW1394_ERROR_NONE; |
| 2268 | |
| 2269 | switch (req->req.type) { |
| 2270 | |
| 2271 | case RAW1394_REQ_ECHO: |
| 2272 | queue_complete_req(req); |
| 2273 | return sizeof(struct raw1394_request); |
| 2274 | |
| 2275 | case RAW1394_REQ_ISO_SEND: |
| 2276 | return handle_iso_send(fi, req, node); |
| 2277 | |
| 2278 | case RAW1394_REQ_ARM_REGISTER: |
| 2279 | return arm_register(fi, req); |
| 2280 | |
| 2281 | case RAW1394_REQ_ARM_UNREGISTER: |
| 2282 | return arm_unregister(fi, req); |
| 2283 | |
| 2284 | case RAW1394_REQ_ARM_SET_BUF: |
| 2285 | return arm_set_buf(fi, req); |
| 2286 | |
| 2287 | case RAW1394_REQ_ARM_GET_BUF: |
| 2288 | return arm_get_buf(fi, req); |
| 2289 | |
| 2290 | case RAW1394_REQ_RESET_NOTIFY: |
| 2291 | return reset_notification(fi, req); |
| 2292 | |
| 2293 | case RAW1394_REQ_ISO_LISTEN: |
| 2294 | handle_iso_listen(fi, req); |
| 2295 | return sizeof(struct raw1394_request); |
| 2296 | |
| 2297 | case RAW1394_REQ_FCP_LISTEN: |
| 2298 | handle_fcp_listen(fi, req); |
| 2299 | return sizeof(struct raw1394_request); |
| 2300 | |
| 2301 | case RAW1394_REQ_RESET_BUS: |
| 2302 | if (req->req.misc == RAW1394_LONG_RESET) { |
| 2303 | DBGMSG("busreset called (type: LONG)"); |
| 2304 | hpsb_reset_bus(fi->host, LONG_RESET); |
| 2305 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ |
| 2306 | return sizeof(struct raw1394_request); |
| 2307 | } |
| 2308 | if (req->req.misc == RAW1394_SHORT_RESET) { |
| 2309 | DBGMSG("busreset called (type: SHORT)"); |
| 2310 | hpsb_reset_bus(fi->host, SHORT_RESET); |
| 2311 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ |
| 2312 | return sizeof(struct raw1394_request); |
| 2313 | } |
| 2314 | /* error EINVAL (22) invalid argument */ |
| 2315 | return (-EINVAL); |
| 2316 | case RAW1394_REQ_GET_ROM: |
| 2317 | return get_config_rom(fi, req); |
| 2318 | |
| 2319 | case RAW1394_REQ_UPDATE_ROM: |
| 2320 | return update_config_rom(fi, req); |
| 2321 | |
| 2322 | case RAW1394_REQ_MODIFY_ROM: |
| 2323 | return modify_config_rom(fi, req); |
| 2324 | } |
| 2325 | |
| 2326 | if (req->req.generation != get_hpsb_generation(fi->host)) { |
| 2327 | req->req.error = RAW1394_ERROR_GENERATION; |
| 2328 | req->req.generation = get_hpsb_generation(fi->host); |
| 2329 | req->req.length = 0; |
| 2330 | queue_complete_req(req); |
| 2331 | return sizeof(struct raw1394_request); |
| 2332 | } |
| 2333 | |
| 2334 | switch (req->req.type) { |
| 2335 | case RAW1394_REQ_PHYPACKET: |
| 2336 | return write_phypacket(fi, req); |
| 2337 | case RAW1394_REQ_ASYNC_SEND: |
| 2338 | return handle_async_send(fi, req); |
| 2339 | } |
| 2340 | |
| 2341 | if (req->req.length == 0) { |
| 2342 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 2343 | queue_complete_req(req); |
| 2344 | return sizeof(struct raw1394_request); |
| 2345 | } |
| 2346 | |
| 2347 | return handle_async_request(fi, req, node); |
| 2348 | } |
| 2349 | |
| 2350 | static ssize_t raw1394_write(struct file *file, const char __user * buffer, |
| 2351 | size_t count, loff_t * offset_is_ignored) |
| 2352 | { |
| 2353 | struct file_info *fi = (struct file_info *)file->private_data; |
| 2354 | struct pending_request *req; |
| 2355 | ssize_t retval = 0; |
| 2356 | |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 2357 | #ifdef CONFIG_COMPAT |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 2358 | if (count == sizeof(struct compat_raw1394_req) && |
| 2359 | sizeof(struct compat_raw1394_req) != |
| 2360 | sizeof(struct raw1394_request)) { |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 2361 | buffer = raw1394_compat_write(buffer); |
| 2362 | if (IS_ERR(buffer)) |
| 2363 | return PTR_ERR(buffer); |
| 2364 | } else |
| 2365 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2366 | if (count != sizeof(struct raw1394_request)) { |
| 2367 | return -EINVAL; |
| 2368 | } |
| 2369 | |
| 2370 | req = alloc_pending_request(); |
| 2371 | if (req == NULL) { |
| 2372 | return -ENOMEM; |
| 2373 | } |
| 2374 | req->file_info = fi; |
| 2375 | |
| 2376 | if (copy_from_user(&req->req, buffer, sizeof(struct raw1394_request))) { |
| 2377 | free_pending_request(req); |
| 2378 | return -EFAULT; |
| 2379 | } |
| 2380 | |
| 2381 | switch (fi->state) { |
| 2382 | case opened: |
| 2383 | retval = state_opened(fi, req); |
| 2384 | break; |
| 2385 | |
| 2386 | case initialized: |
| 2387 | retval = state_initialized(fi, req); |
| 2388 | break; |
| 2389 | |
| 2390 | case connected: |
| 2391 | retval = state_connected(fi, req); |
| 2392 | break; |
| 2393 | } |
| 2394 | |
| 2395 | if (retval < 0) { |
| 2396 | free_pending_request(req); |
| 2397 | } |
| 2398 | |
| 2399 | return retval; |
| 2400 | } |
| 2401 | |
| 2402 | /* rawiso operations */ |
| 2403 | |
| 2404 | /* check if any RAW1394_REQ_RAWISO_ACTIVITY event is already in the |
| 2405 | * completion queue (reqlists_lock must be taken) */ |
| 2406 | static inline int __rawiso_event_in_queue(struct file_info *fi) |
| 2407 | { |
| 2408 | struct pending_request *req; |
| 2409 | |
| 2410 | list_for_each_entry(req, &fi->req_complete, list) |
| 2411 | if (req->req.type == RAW1394_REQ_RAWISO_ACTIVITY) |
| 2412 | return 1; |
| 2413 | |
| 2414 | return 0; |
| 2415 | } |
| 2416 | |
| 2417 | /* put a RAWISO_ACTIVITY event in the queue, if one isn't there already */ |
| 2418 | static void queue_rawiso_event(struct file_info *fi) |
| 2419 | { |
| 2420 | unsigned long flags; |
| 2421 | |
| 2422 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
| 2423 | |
| 2424 | /* only one ISO activity event may be in the queue */ |
| 2425 | if (!__rawiso_event_in_queue(fi)) { |
| 2426 | struct pending_request *req = |
| 2427 | __alloc_pending_request(SLAB_ATOMIC); |
| 2428 | |
| 2429 | if (req) { |
| 2430 | req->file_info = fi; |
| 2431 | req->req.type = RAW1394_REQ_RAWISO_ACTIVITY; |
| 2432 | req->req.generation = get_hpsb_generation(fi->host); |
| 2433 | __queue_complete_req(req); |
| 2434 | } else { |
| 2435 | /* on allocation failure, signal an overflow */ |
| 2436 | if (fi->iso_handle) { |
| 2437 | atomic_inc(&fi->iso_handle->overflows); |
| 2438 | } |
| 2439 | } |
| 2440 | } |
| 2441 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
| 2442 | } |
| 2443 | |
| 2444 | static void rawiso_activity_cb(struct hpsb_iso *iso) |
| 2445 | { |
| 2446 | unsigned long flags; |
| 2447 | struct host_info *hi; |
| 2448 | struct file_info *fi; |
| 2449 | |
| 2450 | spin_lock_irqsave(&host_info_lock, flags); |
| 2451 | hi = find_host_info(iso->host); |
| 2452 | |
| 2453 | if (hi != NULL) { |
| 2454 | list_for_each_entry(fi, &hi->file_info_list, list) { |
| 2455 | if (fi->iso_handle == iso) |
| 2456 | queue_rawiso_event(fi); |
| 2457 | } |
| 2458 | } |
| 2459 | |
| 2460 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 2461 | } |
| 2462 | |
| 2463 | /* helper function - gather all the kernel iso status bits for returning to user-space */ |
| 2464 | static void raw1394_iso_fill_status(struct hpsb_iso *iso, |
| 2465 | struct raw1394_iso_status *stat) |
| 2466 | { |
| 2467 | stat->config.data_buf_size = iso->buf_size; |
| 2468 | stat->config.buf_packets = iso->buf_packets; |
| 2469 | stat->config.channel = iso->channel; |
| 2470 | stat->config.speed = iso->speed; |
| 2471 | stat->config.irq_interval = iso->irq_interval; |
| 2472 | stat->n_packets = hpsb_iso_n_ready(iso); |
| 2473 | stat->overflows = atomic_read(&iso->overflows); |
| 2474 | stat->xmit_cycle = iso->xmit_cycle; |
| 2475 | } |
| 2476 | |
| 2477 | static int raw1394_iso_xmit_init(struct file_info *fi, void __user * uaddr) |
| 2478 | { |
| 2479 | struct raw1394_iso_status stat; |
| 2480 | |
| 2481 | if (!fi->host) |
| 2482 | return -EINVAL; |
| 2483 | |
| 2484 | if (copy_from_user(&stat, uaddr, sizeof(stat))) |
| 2485 | return -EFAULT; |
| 2486 | |
| 2487 | fi->iso_handle = hpsb_iso_xmit_init(fi->host, |
| 2488 | stat.config.data_buf_size, |
| 2489 | stat.config.buf_packets, |
| 2490 | stat.config.channel, |
| 2491 | stat.config.speed, |
| 2492 | stat.config.irq_interval, |
| 2493 | rawiso_activity_cb); |
| 2494 | if (!fi->iso_handle) |
| 2495 | return -ENOMEM; |
| 2496 | |
| 2497 | fi->iso_state = RAW1394_ISO_XMIT; |
| 2498 | |
| 2499 | raw1394_iso_fill_status(fi->iso_handle, &stat); |
| 2500 | if (copy_to_user(uaddr, &stat, sizeof(stat))) |
| 2501 | return -EFAULT; |
| 2502 | |
| 2503 | /* queue an event to get things started */ |
| 2504 | rawiso_activity_cb(fi->iso_handle); |
| 2505 | |
| 2506 | return 0; |
| 2507 | } |
| 2508 | |
| 2509 | static int raw1394_iso_recv_init(struct file_info *fi, void __user * uaddr) |
| 2510 | { |
| 2511 | struct raw1394_iso_status stat; |
| 2512 | |
| 2513 | if (!fi->host) |
| 2514 | return -EINVAL; |
| 2515 | |
| 2516 | if (copy_from_user(&stat, uaddr, sizeof(stat))) |
| 2517 | return -EFAULT; |
| 2518 | |
| 2519 | fi->iso_handle = hpsb_iso_recv_init(fi->host, |
| 2520 | stat.config.data_buf_size, |
| 2521 | stat.config.buf_packets, |
| 2522 | stat.config.channel, |
| 2523 | stat.config.dma_mode, |
| 2524 | stat.config.irq_interval, |
| 2525 | rawiso_activity_cb); |
| 2526 | if (!fi->iso_handle) |
| 2527 | return -ENOMEM; |
| 2528 | |
| 2529 | fi->iso_state = RAW1394_ISO_RECV; |
| 2530 | |
| 2531 | raw1394_iso_fill_status(fi->iso_handle, &stat); |
| 2532 | if (copy_to_user(uaddr, &stat, sizeof(stat))) |
| 2533 | return -EFAULT; |
| 2534 | return 0; |
| 2535 | } |
| 2536 | |
| 2537 | static int raw1394_iso_get_status(struct file_info *fi, void __user * uaddr) |
| 2538 | { |
| 2539 | struct raw1394_iso_status stat; |
| 2540 | struct hpsb_iso *iso = fi->iso_handle; |
| 2541 | |
| 2542 | raw1394_iso_fill_status(fi->iso_handle, &stat); |
| 2543 | if (copy_to_user(uaddr, &stat, sizeof(stat))) |
| 2544 | return -EFAULT; |
| 2545 | |
| 2546 | /* reset overflow counter */ |
| 2547 | atomic_set(&iso->overflows, 0); |
| 2548 | |
| 2549 | return 0; |
| 2550 | } |
| 2551 | |
| 2552 | /* copy N packet_infos out of the ringbuffer into user-supplied array */ |
| 2553 | static int raw1394_iso_recv_packets(struct file_info *fi, void __user * uaddr) |
| 2554 | { |
| 2555 | struct raw1394_iso_packets upackets; |
| 2556 | unsigned int packet = fi->iso_handle->first_packet; |
| 2557 | int i; |
| 2558 | |
| 2559 | if (copy_from_user(&upackets, uaddr, sizeof(upackets))) |
| 2560 | return -EFAULT; |
| 2561 | |
| 2562 | if (upackets.n_packets > hpsb_iso_n_ready(fi->iso_handle)) |
| 2563 | return -EINVAL; |
| 2564 | |
| 2565 | /* ensure user-supplied buffer is accessible and big enough */ |
| 2566 | if (!access_ok(VERIFY_WRITE, upackets.infos, |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 2567 | upackets.n_packets * |
| 2568 | sizeof(struct raw1394_iso_packet_info))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2569 | return -EFAULT; |
| 2570 | |
| 2571 | /* copy the packet_infos out */ |
| 2572 | for (i = 0; i < upackets.n_packets; i++) { |
| 2573 | if (__copy_to_user(&upackets.infos[i], |
| 2574 | &fi->iso_handle->infos[packet], |
| 2575 | sizeof(struct raw1394_iso_packet_info))) |
| 2576 | return -EFAULT; |
| 2577 | |
| 2578 | packet = (packet + 1) % fi->iso_handle->buf_packets; |
| 2579 | } |
| 2580 | |
| 2581 | return 0; |
| 2582 | } |
| 2583 | |
| 2584 | /* copy N packet_infos from user to ringbuffer, and queue them for transmission */ |
| 2585 | static int raw1394_iso_send_packets(struct file_info *fi, void __user * uaddr) |
| 2586 | { |
| 2587 | struct raw1394_iso_packets upackets; |
| 2588 | int i, rv; |
| 2589 | |
| 2590 | if (copy_from_user(&upackets, uaddr, sizeof(upackets))) |
| 2591 | return -EFAULT; |
| 2592 | |
Ben Collins | 1934b8b | 2005-07-09 20:01:23 -0400 | [diff] [blame] | 2593 | if (upackets.n_packets >= fi->iso_handle->buf_packets) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2594 | return -EINVAL; |
| 2595 | |
Ben Collins | 1934b8b | 2005-07-09 20:01:23 -0400 | [diff] [blame] | 2596 | if (upackets.n_packets >= hpsb_iso_n_ready(fi->iso_handle)) |
| 2597 | return -EAGAIN; |
| 2598 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2599 | /* ensure user-supplied buffer is accessible and big enough */ |
| 2600 | if (!access_ok(VERIFY_READ, upackets.infos, |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 2601 | upackets.n_packets * |
| 2602 | sizeof(struct raw1394_iso_packet_info))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2603 | return -EFAULT; |
| 2604 | |
| 2605 | /* copy the infos structs in and queue the packets */ |
| 2606 | for (i = 0; i < upackets.n_packets; i++) { |
| 2607 | struct raw1394_iso_packet_info info; |
| 2608 | |
| 2609 | if (__copy_from_user(&info, &upackets.infos[i], |
| 2610 | sizeof(struct raw1394_iso_packet_info))) |
| 2611 | return -EFAULT; |
| 2612 | |
| 2613 | rv = hpsb_iso_xmit_queue_packet(fi->iso_handle, info.offset, |
| 2614 | info.len, info.tag, info.sy); |
| 2615 | if (rv) |
| 2616 | return rv; |
| 2617 | } |
| 2618 | |
| 2619 | return 0; |
| 2620 | } |
| 2621 | |
| 2622 | static void raw1394_iso_shutdown(struct file_info *fi) |
| 2623 | { |
| 2624 | if (fi->iso_handle) |
| 2625 | hpsb_iso_shutdown(fi->iso_handle); |
| 2626 | |
| 2627 | fi->iso_handle = NULL; |
| 2628 | fi->iso_state = RAW1394_ISO_INACTIVE; |
| 2629 | } |
| 2630 | |
| 2631 | /* mmap the rawiso xmit/recv buffer */ |
| 2632 | static int raw1394_mmap(struct file *file, struct vm_area_struct *vma) |
| 2633 | { |
| 2634 | struct file_info *fi = file->private_data; |
| 2635 | |
| 2636 | if (fi->iso_state == RAW1394_ISO_INACTIVE) |
| 2637 | return -EINVAL; |
| 2638 | |
| 2639 | return dma_region_mmap(&fi->iso_handle->data_buf, file, vma); |
| 2640 | } |
| 2641 | |
| 2642 | /* ioctl is only used for rawiso operations */ |
| 2643 | static int raw1394_ioctl(struct inode *inode, struct file *file, |
| 2644 | unsigned int cmd, unsigned long arg) |
| 2645 | { |
| 2646 | struct file_info *fi = file->private_data; |
| 2647 | void __user *argp = (void __user *)arg; |
| 2648 | |
| 2649 | switch (fi->iso_state) { |
| 2650 | case RAW1394_ISO_INACTIVE: |
| 2651 | switch (cmd) { |
| 2652 | case RAW1394_IOC_ISO_XMIT_INIT: |
| 2653 | return raw1394_iso_xmit_init(fi, argp); |
| 2654 | case RAW1394_IOC_ISO_RECV_INIT: |
| 2655 | return raw1394_iso_recv_init(fi, argp); |
| 2656 | default: |
| 2657 | break; |
| 2658 | } |
| 2659 | break; |
| 2660 | case RAW1394_ISO_RECV: |
| 2661 | switch (cmd) { |
| 2662 | case RAW1394_IOC_ISO_RECV_START:{ |
| 2663 | /* copy args from user-space */ |
| 2664 | int args[3]; |
| 2665 | if (copy_from_user |
| 2666 | (&args[0], argp, sizeof(args))) |
| 2667 | return -EFAULT; |
| 2668 | return hpsb_iso_recv_start(fi->iso_handle, |
| 2669 | args[0], args[1], |
| 2670 | args[2]); |
| 2671 | } |
| 2672 | case RAW1394_IOC_ISO_XMIT_RECV_STOP: |
| 2673 | hpsb_iso_stop(fi->iso_handle); |
| 2674 | return 0; |
| 2675 | case RAW1394_IOC_ISO_RECV_LISTEN_CHANNEL: |
| 2676 | return hpsb_iso_recv_listen_channel(fi->iso_handle, |
| 2677 | arg); |
| 2678 | case RAW1394_IOC_ISO_RECV_UNLISTEN_CHANNEL: |
| 2679 | return hpsb_iso_recv_unlisten_channel(fi->iso_handle, |
| 2680 | arg); |
| 2681 | case RAW1394_IOC_ISO_RECV_SET_CHANNEL_MASK:{ |
| 2682 | /* copy the u64 from user-space */ |
| 2683 | u64 mask; |
| 2684 | if (copy_from_user(&mask, argp, sizeof(mask))) |
| 2685 | return -EFAULT; |
| 2686 | return hpsb_iso_recv_set_channel_mask(fi-> |
| 2687 | iso_handle, |
| 2688 | mask); |
| 2689 | } |
| 2690 | case RAW1394_IOC_ISO_GET_STATUS: |
| 2691 | return raw1394_iso_get_status(fi, argp); |
| 2692 | case RAW1394_IOC_ISO_RECV_PACKETS: |
| 2693 | return raw1394_iso_recv_packets(fi, argp); |
| 2694 | case RAW1394_IOC_ISO_RECV_RELEASE_PACKETS: |
| 2695 | return hpsb_iso_recv_release_packets(fi->iso_handle, |
| 2696 | arg); |
| 2697 | case RAW1394_IOC_ISO_RECV_FLUSH: |
| 2698 | return hpsb_iso_recv_flush(fi->iso_handle); |
| 2699 | case RAW1394_IOC_ISO_SHUTDOWN: |
| 2700 | raw1394_iso_shutdown(fi); |
| 2701 | return 0; |
| 2702 | case RAW1394_IOC_ISO_QUEUE_ACTIVITY: |
| 2703 | queue_rawiso_event(fi); |
| 2704 | return 0; |
| 2705 | } |
| 2706 | break; |
| 2707 | case RAW1394_ISO_XMIT: |
| 2708 | switch (cmd) { |
| 2709 | case RAW1394_IOC_ISO_XMIT_START:{ |
| 2710 | /* copy two ints from user-space */ |
| 2711 | int args[2]; |
| 2712 | if (copy_from_user |
| 2713 | (&args[0], argp, sizeof(args))) |
| 2714 | return -EFAULT; |
| 2715 | return hpsb_iso_xmit_start(fi->iso_handle, |
| 2716 | args[0], args[1]); |
| 2717 | } |
| 2718 | case RAW1394_IOC_ISO_XMIT_SYNC: |
| 2719 | return hpsb_iso_xmit_sync(fi->iso_handle); |
| 2720 | case RAW1394_IOC_ISO_XMIT_RECV_STOP: |
| 2721 | hpsb_iso_stop(fi->iso_handle); |
| 2722 | return 0; |
| 2723 | case RAW1394_IOC_ISO_GET_STATUS: |
| 2724 | return raw1394_iso_get_status(fi, argp); |
| 2725 | case RAW1394_IOC_ISO_XMIT_PACKETS: |
| 2726 | return raw1394_iso_send_packets(fi, argp); |
| 2727 | case RAW1394_IOC_ISO_SHUTDOWN: |
| 2728 | raw1394_iso_shutdown(fi); |
| 2729 | return 0; |
| 2730 | case RAW1394_IOC_ISO_QUEUE_ACTIVITY: |
| 2731 | queue_rawiso_event(fi); |
| 2732 | return 0; |
| 2733 | } |
| 2734 | break; |
| 2735 | default: |
| 2736 | break; |
| 2737 | } |
| 2738 | |
| 2739 | return -EINVAL; |
| 2740 | } |
| 2741 | |
| 2742 | static unsigned int raw1394_poll(struct file *file, poll_table * pt) |
| 2743 | { |
| 2744 | struct file_info *fi = file->private_data; |
| 2745 | unsigned int mask = POLLOUT | POLLWRNORM; |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2746 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2747 | |
| 2748 | poll_wait(file, &fi->poll_wait_complete, pt); |
| 2749 | |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2750 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2751 | if (!list_empty(&fi->req_complete)) { |
| 2752 | mask |= POLLIN | POLLRDNORM; |
| 2753 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2754 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2755 | |
| 2756 | return mask; |
| 2757 | } |
| 2758 | |
| 2759 | static int raw1394_open(struct inode *inode, struct file *file) |
| 2760 | { |
| 2761 | struct file_info *fi; |
| 2762 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 2763 | fi = kzalloc(sizeof(*fi), SLAB_KERNEL); |
| 2764 | if (!fi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2765 | return -ENOMEM; |
| 2766 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2767 | fi->notification = (u8) RAW1394_NOTIFY_ON; /* busreset notification */ |
| 2768 | |
| 2769 | INIT_LIST_HEAD(&fi->list); |
| 2770 | fi->state = opened; |
| 2771 | INIT_LIST_HEAD(&fi->req_pending); |
| 2772 | INIT_LIST_HEAD(&fi->req_complete); |
| 2773 | sema_init(&fi->complete_sem, 0); |
| 2774 | spin_lock_init(&fi->reqlists_lock); |
| 2775 | init_waitqueue_head(&fi->poll_wait_complete); |
| 2776 | INIT_LIST_HEAD(&fi->addr_list); |
| 2777 | |
| 2778 | file->private_data = fi; |
| 2779 | |
| 2780 | return 0; |
| 2781 | } |
| 2782 | |
| 2783 | static int raw1394_release(struct inode *inode, struct file *file) |
| 2784 | { |
| 2785 | struct file_info *fi = file->private_data; |
| 2786 | struct list_head *lh; |
| 2787 | struct pending_request *req; |
| 2788 | int done = 0, i, fail = 0; |
| 2789 | int retval = 0; |
| 2790 | struct list_head *entry; |
| 2791 | struct arm_addr *addr = NULL; |
| 2792 | struct host_info *hi; |
| 2793 | struct file_info *fi_hlp = NULL; |
| 2794 | struct arm_addr *arm_addr = NULL; |
| 2795 | int another_host; |
| 2796 | int csr_mod = 0; |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2797 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2798 | |
| 2799 | if (fi->iso_state != RAW1394_ISO_INACTIVE) |
| 2800 | raw1394_iso_shutdown(fi); |
| 2801 | |
| 2802 | for (i = 0; i < 64; i++) { |
| 2803 | if (fi->listen_channels & (1ULL << i)) { |
| 2804 | hpsb_unlisten_channel(&raw1394_highlevel, fi->host, i); |
| 2805 | } |
| 2806 | } |
| 2807 | |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2808 | spin_lock_irqsave(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2809 | fi->listen_channels = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2810 | |
| 2811 | fail = 0; |
| 2812 | /* set address-entries invalid */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2813 | |
| 2814 | while (!list_empty(&fi->addr_list)) { |
| 2815 | another_host = 0; |
| 2816 | lh = fi->addr_list.next; |
| 2817 | addr = list_entry(lh, struct arm_addr, addr_list); |
| 2818 | /* another host with valid address-entry containing |
| 2819 | same addressrange? */ |
| 2820 | list_for_each_entry(hi, &host_info_list, list) { |
| 2821 | if (hi->host != fi->host) { |
| 2822 | list_for_each_entry(fi_hlp, &hi->file_info_list, |
| 2823 | list) { |
| 2824 | entry = fi_hlp->addr_list.next; |
| 2825 | while (entry != &(fi_hlp->addr_list)) { |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 2826 | arm_addr = list_entry(entry, struct |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2827 | arm_addr, |
| 2828 | addr_list); |
| 2829 | if (arm_addr->start == |
| 2830 | addr->start) { |
| 2831 | DBGMSG |
| 2832 | ("raw1394_release: " |
| 2833 | "another host ownes " |
| 2834 | "same addressrange"); |
| 2835 | another_host = 1; |
| 2836 | break; |
| 2837 | } |
| 2838 | entry = entry->next; |
| 2839 | } |
| 2840 | if (another_host) { |
| 2841 | break; |
| 2842 | } |
| 2843 | } |
| 2844 | } |
| 2845 | } |
| 2846 | if (!another_host) { |
| 2847 | DBGMSG("raw1394_release: call hpsb_arm_unregister"); |
| 2848 | retval = |
| 2849 | hpsb_unregister_addrspace(&raw1394_highlevel, |
| 2850 | fi->host, addr->start); |
| 2851 | if (!retval) { |
| 2852 | ++fail; |
| 2853 | printk(KERN_ERR |
| 2854 | "raw1394_release arm_Unregister failed\n"); |
| 2855 | } |
| 2856 | } |
| 2857 | DBGMSG("raw1394_release: delete addr_entry from list"); |
| 2858 | list_del(&addr->addr_list); |
| 2859 | vfree(addr->addr_space_buffer); |
| 2860 | kfree(addr); |
| 2861 | } /* while */ |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2862 | spin_unlock_irqrestore(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2863 | if (fail > 0) { |
| 2864 | printk(KERN_ERR "raw1394: during addr_list-release " |
| 2865 | "error(s) occurred \n"); |
| 2866 | } |
| 2867 | |
| 2868 | while (!done) { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2869 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2870 | |
| 2871 | while (!list_empty(&fi->req_complete)) { |
| 2872 | lh = fi->req_complete.next; |
| 2873 | list_del(lh); |
| 2874 | |
| 2875 | req = list_entry(lh, struct pending_request, list); |
| 2876 | |
| 2877 | free_pending_request(req); |
| 2878 | } |
| 2879 | |
| 2880 | if (list_empty(&fi->req_pending)) |
| 2881 | done = 1; |
| 2882 | |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2883 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2884 | |
| 2885 | if (!done) |
| 2886 | down_interruptible(&fi->complete_sem); |
| 2887 | } |
| 2888 | |
| 2889 | /* Remove any sub-trees left by user space programs */ |
| 2890 | for (i = 0; i < RAW1394_MAX_USER_CSR_DIRS; i++) { |
| 2891 | struct csr1212_dentry *dentry; |
| 2892 | if (!fi->csr1212_dirs[i]) |
| 2893 | continue; |
| 2894 | for (dentry = |
| 2895 | fi->csr1212_dirs[i]->value.directory.dentries_head; dentry; |
| 2896 | dentry = dentry->next) { |
| 2897 | csr1212_detach_keyval_from_directory(fi->host->csr.rom-> |
| 2898 | root_kv, |
| 2899 | dentry->kv); |
| 2900 | } |
| 2901 | csr1212_release_keyval(fi->csr1212_dirs[i]); |
| 2902 | fi->csr1212_dirs[i] = NULL; |
| 2903 | csr_mod = 1; |
| 2904 | } |
| 2905 | |
| 2906 | if ((csr_mod || fi->cfgrom_upd) |
| 2907 | && hpsb_update_config_rom_image(fi->host) < 0) |
| 2908 | HPSB_ERR |
| 2909 | ("Failed to generate Configuration ROM image for host %d", |
| 2910 | fi->host->id); |
| 2911 | |
| 2912 | if (fi->state == connected) { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2913 | spin_lock_irqsave(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2914 | list_del(&fi->list); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2915 | spin_unlock_irqrestore(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2916 | |
| 2917 | put_device(&fi->host->device); |
| 2918 | } |
| 2919 | |
| 2920 | kfree(fi); |
| 2921 | |
| 2922 | return 0; |
| 2923 | } |
| 2924 | |
| 2925 | /*** HOTPLUG STUFF **********************************************************/ |
| 2926 | /* |
| 2927 | * Export information about protocols/devices supported by this driver. |
| 2928 | */ |
| 2929 | static struct ieee1394_device_id raw1394_id_table[] = { |
| 2930 | { |
| 2931 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, |
| 2932 | .specifier_id = AVC_UNIT_SPEC_ID_ENTRY & 0xffffff, |
| 2933 | .version = AVC_SW_VERSION_ENTRY & 0xffffff}, |
| 2934 | { |
| 2935 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, |
| 2936 | .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, |
| 2937 | .version = CAMERA_SW_VERSION_ENTRY & 0xffffff}, |
| 2938 | { |
| 2939 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, |
| 2940 | .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, |
| 2941 | .version = (CAMERA_SW_VERSION_ENTRY + 1) & 0xffffff}, |
| 2942 | { |
| 2943 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, |
| 2944 | .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, |
| 2945 | .version = (CAMERA_SW_VERSION_ENTRY + 2) & 0xffffff}, |
| 2946 | {} |
| 2947 | }; |
| 2948 | |
| 2949 | MODULE_DEVICE_TABLE(ieee1394, raw1394_id_table); |
| 2950 | |
| 2951 | static struct hpsb_protocol_driver raw1394_driver = { |
| 2952 | .name = "raw1394 Driver", |
| 2953 | .id_table = raw1394_id_table, |
| 2954 | .driver = { |
| 2955 | .name = "raw1394", |
| 2956 | .bus = &ieee1394_bus_type, |
| 2957 | }, |
| 2958 | }; |
| 2959 | |
| 2960 | /******************************************************************************/ |
| 2961 | |
| 2962 | static struct hpsb_highlevel raw1394_highlevel = { |
| 2963 | .name = RAW1394_DEVICE_NAME, |
| 2964 | .add_host = add_host, |
| 2965 | .remove_host = remove_host, |
| 2966 | .host_reset = host_reset, |
| 2967 | .iso_receive = iso_receive, |
| 2968 | .fcp_request = fcp_request, |
| 2969 | }; |
| 2970 | |
| 2971 | static struct cdev raw1394_cdev; |
| 2972 | static struct file_operations raw1394_fops = { |
| 2973 | .owner = THIS_MODULE, |
| 2974 | .read = raw1394_read, |
| 2975 | .write = raw1394_write, |
| 2976 | .mmap = raw1394_mmap, |
| 2977 | .ioctl = raw1394_ioctl, |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 2978 | // .compat_ioctl = ... someone needs to do this |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2979 | .poll = raw1394_poll, |
| 2980 | .open = raw1394_open, |
| 2981 | .release = raw1394_release, |
| 2982 | }; |
| 2983 | |
| 2984 | static int __init init_raw1394(void) |
| 2985 | { |
| 2986 | int ret = 0; |
| 2987 | |
| 2988 | hpsb_register_highlevel(&raw1394_highlevel); |
| 2989 | |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 2990 | if (IS_ERR |
| 2991 | (class_device_create |
| 2992 | (hpsb_protocol_class, NULL, |
| 2993 | MKDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_RAW1394 * 16), NULL, |
| 2994 | RAW1394_DEVICE_NAME))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2995 | ret = -EFAULT; |
| 2996 | goto out_unreg; |
| 2997 | } |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 2998 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2999 | cdev_init(&raw1394_cdev, &raw1394_fops); |
| 3000 | raw1394_cdev.owner = THIS_MODULE; |
| 3001 | kobject_set_name(&raw1394_cdev.kobj, RAW1394_DEVICE_NAME); |
| 3002 | ret = cdev_add(&raw1394_cdev, IEEE1394_RAW1394_DEV, 1); |
| 3003 | if (ret) { |
| 3004 | HPSB_ERR("raw1394 failed to register minor device block"); |
| 3005 | goto out_dev; |
| 3006 | } |
| 3007 | |
| 3008 | HPSB_INFO("raw1394: /dev/%s device initialized", RAW1394_DEVICE_NAME); |
| 3009 | |
| 3010 | ret = hpsb_register_protocol(&raw1394_driver); |
| 3011 | if (ret) { |
| 3012 | HPSB_ERR("raw1394: failed to register protocol"); |
| 3013 | cdev_del(&raw1394_cdev); |
| 3014 | goto out_dev; |
| 3015 | } |
| 3016 | |
| 3017 | goto out; |
| 3018 | |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 3019 | out_dev: |
gregkh@suse.de | 7e25ab9 | 2005-03-23 09:53:36 -0800 | [diff] [blame] | 3020 | class_device_destroy(hpsb_protocol_class, |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 3021 | MKDEV(IEEE1394_MAJOR, |
| 3022 | IEEE1394_MINOR_BLOCK_RAW1394 * 16)); |
| 3023 | out_unreg: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3024 | hpsb_unregister_highlevel(&raw1394_highlevel); |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 3025 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3026 | return ret; |
| 3027 | } |
| 3028 | |
| 3029 | static void __exit cleanup_raw1394(void) |
| 3030 | { |
gregkh@suse.de | 7e25ab9 | 2005-03-23 09:53:36 -0800 | [diff] [blame] | 3031 | class_device_destroy(hpsb_protocol_class, |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 3032 | MKDEV(IEEE1394_MAJOR, |
| 3033 | IEEE1394_MINOR_BLOCK_RAW1394 * 16)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3034 | cdev_del(&raw1394_cdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3035 | hpsb_unregister_highlevel(&raw1394_highlevel); |
| 3036 | hpsb_unregister_protocol(&raw1394_driver); |
| 3037 | } |
| 3038 | |
| 3039 | module_init(init_raw1394); |
| 3040 | module_exit(cleanup_raw1394); |
| 3041 | MODULE_LICENSE("GPL"); |