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> |
Alexey Dobriyan | d43c36d | 2009-10-07 17:09:06 +0400 | [diff] [blame^] | 32 | #include <linux/sched.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include <linux/string.h> |
| 34 | #include <linux/slab.h> |
| 35 | #include <linux/fs.h> |
| 36 | #include <linux/poll.h> |
| 37 | #include <linux/module.h> |
Stefan Richter | 10963ea | 2008-08-16 00:11:48 +0200 | [diff] [blame] | 38 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #include <linux/init.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include <linux/interrupt.h> |
| 41 | #include <linux/vmalloc.h> |
| 42 | #include <linux/cdev.h> |
| 43 | #include <asm/uaccess.h> |
| 44 | #include <asm/atomic.h> |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 45 | #include <linux/compat.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | |
| 47 | #include "csr1212.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #include "highlevel.h" |
Stefan Richter | de4394f | 2006-07-03 12:02:29 -0400 | [diff] [blame] | 49 | #include "hosts.h" |
| 50 | #include "ieee1394.h" |
| 51 | #include "ieee1394_core.h" |
| 52 | #include "ieee1394_hotplug.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | #include "ieee1394_transactions.h" |
Stefan Richter | de4394f | 2006-07-03 12:02:29 -0400 | [diff] [blame] | 54 | #include "ieee1394_types.h" |
| 55 | #include "iso.h" |
| 56 | #include "nodemgr.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | #include "raw1394.h" |
| 58 | #include "raw1394-private.h" |
| 59 | |
| 60 | #define int2ptr(x) ((void __user *)(unsigned long)x) |
| 61 | #define ptr2int(x) ((u64)(unsigned long)(void __user *)x) |
| 62 | |
| 63 | #ifdef CONFIG_IEEE1394_VERBOSEDEBUG |
| 64 | #define RAW1394_DEBUG |
| 65 | #endif |
| 66 | |
| 67 | #ifdef RAW1394_DEBUG |
| 68 | #define DBGMSG(fmt, args...) \ |
| 69 | printk(KERN_INFO "raw1394:" fmt "\n" , ## args) |
| 70 | #else |
Stefan Richter | 611aa19 | 2006-08-02 18:44:00 +0200 | [diff] [blame] | 71 | #define DBGMSG(fmt, args...) do {} while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | #endif |
| 73 | |
| 74 | static LIST_HEAD(host_info_list); |
| 75 | static int host_count; |
| 76 | static DEFINE_SPINLOCK(host_info_lock); |
| 77 | static atomic_t internal_generation = ATOMIC_INIT(0); |
| 78 | |
| 79 | static atomic_t iso_buffer_size; |
| 80 | static const int iso_buffer_max = 4 * 1024 * 1024; /* 4 MB */ |
| 81 | |
| 82 | static struct hpsb_highlevel raw1394_highlevel; |
| 83 | |
| 84 | static int arm_read(struct hpsb_host *host, int nodeid, quadlet_t * buffer, |
| 85 | u64 addr, size_t length, u16 flags); |
| 86 | static int arm_write(struct hpsb_host *host, int nodeid, int destid, |
| 87 | quadlet_t * data, u64 addr, size_t length, u16 flags); |
| 88 | static int arm_lock(struct hpsb_host *host, int nodeid, quadlet_t * store, |
| 89 | u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode, |
| 90 | u16 flags); |
| 91 | static int arm_lock64(struct hpsb_host *host, int nodeid, octlet_t * store, |
| 92 | u64 addr, octlet_t data, octlet_t arg, int ext_tcode, |
| 93 | u16 flags); |
Tobias Klauser | 1c4fb57 | 2009-02-09 22:05:06 +0100 | [diff] [blame] | 94 | static const struct hpsb_address_ops arm_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | .read = arm_read, |
| 96 | .write = arm_write, |
| 97 | .lock = arm_lock, |
| 98 | .lock64 = arm_lock64, |
| 99 | }; |
| 100 | |
| 101 | static void queue_complete_cb(struct pending_request *req); |
| 102 | |
Al Viro | dd0fc66 | 2005-10-07 07:46:04 +0100 | [diff] [blame] | 103 | static struct pending_request *__alloc_pending_request(gfp_t flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | { |
| 105 | struct pending_request *req; |
| 106 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 107 | req = kzalloc(sizeof(*req), flags); |
| 108 | if (req) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | INIT_LIST_HEAD(&req->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | |
| 111 | return req; |
| 112 | } |
| 113 | |
| 114 | static inline struct pending_request *alloc_pending_request(void) |
| 115 | { |
Christoph Lameter | e94b176 | 2006-12-06 20:33:17 -0800 | [diff] [blame] | 116 | return __alloc_pending_request(GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | } |
| 118 | |
| 119 | static void free_pending_request(struct pending_request *req) |
| 120 | { |
| 121 | if (req->ibs) { |
| 122 | if (atomic_dec_and_test(&req->ibs->refcount)) { |
| 123 | atomic_sub(req->ibs->data_size, &iso_buffer_size); |
| 124 | kfree(req->ibs); |
| 125 | } |
| 126 | } else if (req->free_data) { |
| 127 | kfree(req->data); |
| 128 | } |
| 129 | hpsb_free_packet(req->packet); |
| 130 | kfree(req); |
| 131 | } |
| 132 | |
| 133 | /* fi->reqlists_lock must be taken */ |
| 134 | static void __queue_complete_req(struct pending_request *req) |
| 135 | { |
| 136 | struct file_info *fi = req->file_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | |
Stefan Richter | 45289bf | 2006-07-03 12:02:33 -0400 | [diff] [blame] | 138 | list_move_tail(&req->list, &fi->req_complete); |
| 139 | wake_up(&fi->wait_complete); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) { |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 263 | req = __alloc_pending_request(GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | static void fcp_request(struct hpsb_host *host, int nodeid, int direction, |
| 288 | int cts, u8 * data, 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 fcp request"); |
| 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->fcp_buffer) |
| 308 | continue; |
| 309 | |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 310 | req = __alloc_pending_request(GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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, |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 316 | GFP_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_FCP_REQUEST; |
| 334 | req->req.generation = get_hpsb_generation(host); |
| 335 | req->req.misc = nodeid | (direction << 16); |
| 336 | req->req.recvb = ptr2int(fi->fcp_buffer); |
| 337 | req->req.length = 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 | |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 348 | #ifdef CONFIG_COMPAT |
| 349 | struct compat_raw1394_req { |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 350 | __u32 type; |
| 351 | __s32 error; |
| 352 | __u32 misc; |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 353 | |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 354 | __u32 generation; |
| 355 | __u32 length; |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 356 | |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 357 | __u64 address; |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 358 | |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 359 | __u64 tag; |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 360 | |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 361 | __u64 sendb; |
| 362 | __u64 recvb; |
Stefan Richter | 5933708 | 2007-07-04 23:13:53 +0200 | [diff] [blame] | 363 | } |
| 364 | #if defined(CONFIG_X86_64) || defined(CONFIG_IA64) |
| 365 | __attribute__((packed)) |
| 366 | #endif |
| 367 | ; |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 368 | |
| 369 | static const char __user *raw1394_compat_write(const char __user *buf) |
| 370 | { |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 371 | struct compat_raw1394_req __user *cr = (typeof(cr)) buf; |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 372 | struct raw1394_request __user *r; |
Stefan Richter | 4216968 | 2009-02-15 22:49:24 +0100 | [diff] [blame] | 373 | |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 374 | r = compat_alloc_user_space(sizeof(struct raw1394_request)); |
| 375 | |
| 376 | #define C(x) __copy_in_user(&r->x, &cr->x, sizeof(r->x)) |
| 377 | |
| 378 | if (copy_in_user(r, cr, sizeof(struct compat_raw1394_req)) || |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 379 | C(address) || |
| 380 | C(tag) || |
| 381 | C(sendb) || |
| 382 | C(recvb)) |
Stefan Richter | 4216968 | 2009-02-15 22:49:24 +0100 | [diff] [blame] | 383 | return (__force const char __user *)ERR_PTR(-EFAULT); |
| 384 | |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 385 | return (const char __user *)r; |
| 386 | } |
| 387 | #undef C |
| 388 | |
| 389 | #define P(x) __put_user(r->x, &cr->x) |
| 390 | |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 391 | static int |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 392 | raw1394_compat_read(const char __user *buf, struct raw1394_request *r) |
| 393 | { |
Petr Vandrovec | ee9be42 | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 394 | struct compat_raw1394_req __user *cr = (typeof(cr)) buf; |
Stefan Richter | 4216968 | 2009-02-15 22:49:24 +0100 | [diff] [blame] | 395 | |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 396 | if (!access_ok(VERIFY_WRITE, cr, sizeof(struct compat_raw1394_req)) || |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 397 | P(type) || |
| 398 | P(error) || |
| 399 | P(misc) || |
| 400 | P(generation) || |
| 401 | P(length) || |
| 402 | P(address) || |
| 403 | P(tag) || |
| 404 | P(sendb) || |
| 405 | P(recvb)) |
| 406 | return -EFAULT; |
Stefan Richter | 4216968 | 2009-02-15 22:49:24 +0100 | [diff] [blame] | 407 | |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 408 | return sizeof(struct compat_raw1394_req); |
| 409 | } |
| 410 | #undef P |
| 411 | |
| 412 | #endif |
| 413 | |
Stefan Richter | 45289bf | 2006-07-03 12:02:33 -0400 | [diff] [blame] | 414 | /* get next completed request (caller must hold fi->reqlists_lock) */ |
| 415 | static inline struct pending_request *__next_complete_req(struct file_info *fi) |
| 416 | { |
| 417 | struct list_head *lh; |
| 418 | struct pending_request *req = NULL; |
| 419 | |
| 420 | if (!list_empty(&fi->req_complete)) { |
| 421 | lh = fi->req_complete.next; |
| 422 | list_del(lh); |
| 423 | req = list_entry(lh, struct pending_request, list); |
| 424 | } |
| 425 | return req; |
| 426 | } |
| 427 | |
| 428 | /* atomically get next completed request */ |
| 429 | static struct pending_request *next_complete_req(struct file_info *fi) |
| 430 | { |
| 431 | unsigned long flags; |
| 432 | struct pending_request *req; |
| 433 | |
| 434 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
| 435 | req = __next_complete_req(fi); |
| 436 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
| 437 | return req; |
| 438 | } |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 439 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | static ssize_t raw1394_read(struct file *file, char __user * buffer, |
| 441 | size_t count, loff_t * offset_is_ignored) |
| 442 | { |
| 443 | struct file_info *fi = (struct file_info *)file->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | struct pending_request *req; |
| 445 | ssize_t ret; |
| 446 | |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 447 | #ifdef CONFIG_COMPAT |
| 448 | if (count == sizeof(struct compat_raw1394_req)) { |
| 449 | /* ok */ |
| 450 | } else |
| 451 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | if (count != sizeof(struct raw1394_request)) { |
| 453 | return -EINVAL; |
| 454 | } |
| 455 | |
| 456 | if (!access_ok(VERIFY_WRITE, buffer, count)) { |
| 457 | return -EFAULT; |
| 458 | } |
| 459 | |
| 460 | if (file->f_flags & O_NONBLOCK) { |
Stefan Richter | 45289bf | 2006-07-03 12:02:33 -0400 | [diff] [blame] | 461 | if (!(req = next_complete_req(fi))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | return -EAGAIN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | } else { |
Stefan Richter | 45289bf | 2006-07-03 12:02:33 -0400 | [diff] [blame] | 464 | /* |
| 465 | * NB: We call the macro wait_event_interruptible() with a |
| 466 | * condition argument with side effect. This is only possible |
| 467 | * because the side effect does not occur until the condition |
| 468 | * became true, and wait_event_interruptible() won't evaluate |
| 469 | * the condition again after that. |
| 470 | */ |
| 471 | if (wait_event_interruptible(fi->wait_complete, |
| 472 | (req = next_complete_req(fi)))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | return -ERESTARTSYS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | } |
| 475 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | if (req->req.length) { |
| 477 | if (copy_to_user(int2ptr(req->req.recvb), req->data, |
| 478 | req->req.length)) { |
| 479 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 480 | } |
| 481 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 483 | #ifdef CONFIG_COMPAT |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 484 | if (count == sizeof(struct compat_raw1394_req) && |
| 485 | sizeof(struct compat_raw1394_req) != |
| 486 | sizeof(struct raw1394_request)) { |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 487 | ret = raw1394_compat_read(buffer, &req->req); |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 488 | } else |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 489 | #endif |
| 490 | { |
| 491 | if (copy_to_user(buffer, &req->req, sizeof(req->req))) { |
| 492 | ret = -EFAULT; |
| 493 | goto out; |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 494 | } |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 495 | ret = (ssize_t) sizeof(struct raw1394_request); |
| 496 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | out: |
| 498 | free_pending_request(req); |
| 499 | return ret; |
| 500 | } |
| 501 | |
| 502 | static int state_opened(struct file_info *fi, struct pending_request *req) |
| 503 | { |
| 504 | if (req->req.type == RAW1394_REQ_INITIALIZE) { |
| 505 | switch (req->req.misc) { |
| 506 | case RAW1394_KERNELAPI_VERSION: |
| 507 | case 3: |
| 508 | fi->state = initialized; |
| 509 | fi->protocol_version = req->req.misc; |
| 510 | req->req.error = RAW1394_ERROR_NONE; |
| 511 | req->req.generation = atomic_read(&internal_generation); |
| 512 | break; |
| 513 | |
| 514 | default: |
| 515 | req->req.error = RAW1394_ERROR_COMPAT; |
| 516 | req->req.misc = RAW1394_KERNELAPI_VERSION; |
| 517 | } |
| 518 | } else { |
| 519 | req->req.error = RAW1394_ERROR_STATE_ORDER; |
| 520 | } |
| 521 | |
| 522 | req->req.length = 0; |
| 523 | queue_complete_req(req); |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 524 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | } |
| 526 | |
| 527 | static int state_initialized(struct file_info *fi, struct pending_request *req) |
| 528 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 529 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | struct host_info *hi; |
| 531 | struct raw1394_khost_list *khl; |
| 532 | |
| 533 | if (req->req.generation != atomic_read(&internal_generation)) { |
| 534 | req->req.error = RAW1394_ERROR_GENERATION; |
| 535 | req->req.generation = atomic_read(&internal_generation); |
| 536 | req->req.length = 0; |
| 537 | queue_complete_req(req); |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 538 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | } |
| 540 | |
| 541 | switch (req->req.type) { |
| 542 | case RAW1394_REQ_LIST_CARDS: |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 543 | spin_lock_irqsave(&host_info_lock, flags); |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 544 | khl = kmalloc(sizeof(*khl) * host_count, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 546 | if (khl) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | req->req.misc = host_count; |
| 548 | req->data = (quadlet_t *) khl; |
| 549 | |
| 550 | list_for_each_entry(hi, &host_info_list, list) { |
| 551 | khl->nodes = hi->host->node_count; |
| 552 | strcpy(khl->name, hi->host->driver->name); |
| 553 | khl++; |
| 554 | } |
| 555 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 556 | spin_unlock_irqrestore(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 558 | if (khl) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | req->req.error = RAW1394_ERROR_NONE; |
| 560 | req->req.length = min(req->req.length, |
| 561 | (u32) (sizeof |
| 562 | (struct raw1394_khost_list) |
| 563 | * req->req.misc)); |
| 564 | req->free_data = 1; |
| 565 | } else { |
| 566 | return -ENOMEM; |
| 567 | } |
| 568 | break; |
| 569 | |
| 570 | case RAW1394_REQ_SET_CARD: |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 571 | spin_lock_irqsave(&host_info_lock, flags); |
Stefan Richter | 0fe4c6f | 2007-02-03 16:48:51 +0100 | [diff] [blame] | 572 | if (req->req.misc >= host_count) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
Stefan Richter | 0fe4c6f | 2007-02-03 16:48:51 +0100 | [diff] [blame] | 574 | goto out_set_card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | } |
Stefan Richter | 0fe4c6f | 2007-02-03 16:48:51 +0100 | [diff] [blame] | 576 | list_for_each_entry(hi, &host_info_list, list) |
| 577 | if (!req->req.misc--) |
| 578 | break; |
| 579 | get_device(&hi->host->device); /* FIXME handle failure case */ |
| 580 | list_add_tail(&fi->list, &hi->file_info_list); |
| 581 | |
| 582 | /* prevent unloading of the host's low-level driver */ |
| 583 | if (!try_module_get(hi->host->driver->owner)) { |
| 584 | req->req.error = RAW1394_ERROR_ABORTED; |
| 585 | goto out_set_card; |
| 586 | } |
| 587 | WARN_ON(fi->host); |
| 588 | fi->host = hi->host; |
| 589 | fi->state = connected; |
| 590 | |
| 591 | req->req.error = RAW1394_ERROR_NONE; |
| 592 | req->req.generation = get_hpsb_generation(fi->host); |
| 593 | req->req.misc = (fi->host->node_id << 16) |
| 594 | | fi->host->node_count; |
| 595 | if (fi->protocol_version > 3) |
| 596 | req->req.misc |= NODEID_TO_NODE(fi->host->irm_id) << 8; |
| 597 | out_set_card: |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 598 | spin_unlock_irqrestore(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | |
| 600 | req->req.length = 0; |
| 601 | break; |
| 602 | |
| 603 | default: |
| 604 | req->req.error = RAW1394_ERROR_STATE_ORDER; |
| 605 | req->req.length = 0; |
| 606 | break; |
| 607 | } |
| 608 | |
| 609 | queue_complete_req(req); |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 610 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | } |
| 612 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | static void handle_fcp_listen(struct file_info *fi, struct pending_request *req) |
| 614 | { |
| 615 | if (req->req.misc) { |
| 616 | if (fi->fcp_buffer) { |
| 617 | req->req.error = RAW1394_ERROR_ALREADY; |
| 618 | } else { |
| 619 | fi->fcp_buffer = int2ptr(req->req.recvb); |
| 620 | } |
| 621 | } else { |
| 622 | if (!fi->fcp_buffer) { |
| 623 | req->req.error = RAW1394_ERROR_ALREADY; |
| 624 | } else { |
| 625 | fi->fcp_buffer = NULL; |
| 626 | } |
| 627 | } |
| 628 | |
| 629 | req->req.length = 0; |
| 630 | queue_complete_req(req); |
| 631 | } |
| 632 | |
| 633 | static int handle_async_request(struct file_info *fi, |
| 634 | struct pending_request *req, int node) |
| 635 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 636 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | struct hpsb_packet *packet = NULL; |
| 638 | u64 addr = req->req.address & 0xffffffffffffULL; |
| 639 | |
| 640 | switch (req->req.type) { |
| 641 | case RAW1394_REQ_ASYNC_READ: |
| 642 | DBGMSG("read_request called"); |
| 643 | packet = |
| 644 | hpsb_make_readpacket(fi->host, node, addr, req->req.length); |
| 645 | |
| 646 | if (!packet) |
| 647 | return -ENOMEM; |
| 648 | |
| 649 | if (req->req.length == 4) |
| 650 | req->data = &packet->header[3]; |
| 651 | else |
| 652 | req->data = packet->data; |
| 653 | |
| 654 | break; |
| 655 | |
| 656 | case RAW1394_REQ_ASYNC_WRITE: |
| 657 | DBGMSG("write_request called"); |
| 658 | |
| 659 | packet = hpsb_make_writepacket(fi->host, node, addr, NULL, |
| 660 | req->req.length); |
| 661 | if (!packet) |
| 662 | return -ENOMEM; |
| 663 | |
| 664 | if (req->req.length == 4) { |
| 665 | if (copy_from_user |
| 666 | (&packet->header[3], int2ptr(req->req.sendb), |
| 667 | req->req.length)) |
| 668 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 669 | } else { |
| 670 | if (copy_from_user |
| 671 | (packet->data, int2ptr(req->req.sendb), |
| 672 | req->req.length)) |
| 673 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 674 | } |
| 675 | |
| 676 | req->req.length = 0; |
| 677 | break; |
| 678 | |
| 679 | case RAW1394_REQ_ASYNC_STREAM: |
| 680 | DBGMSG("stream_request called"); |
| 681 | |
| 682 | packet = |
| 683 | hpsb_make_streampacket(fi->host, NULL, req->req.length, |
| 684 | node & 0x3f /*channel */ , |
| 685 | (req->req.misc >> 16) & 0x3, |
| 686 | req->req.misc & 0xf); |
| 687 | if (!packet) |
| 688 | return -ENOMEM; |
| 689 | |
| 690 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), |
| 691 | req->req.length)) |
| 692 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 693 | |
| 694 | req->req.length = 0; |
| 695 | break; |
| 696 | |
| 697 | case RAW1394_REQ_LOCK: |
| 698 | DBGMSG("lock_request called"); |
| 699 | if ((req->req.misc == EXTCODE_FETCH_ADD) |
| 700 | || (req->req.misc == EXTCODE_LITTLE_ADD)) { |
| 701 | if (req->req.length != 4) { |
| 702 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 703 | break; |
| 704 | } |
| 705 | } else { |
| 706 | if (req->req.length != 8) { |
| 707 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 708 | break; |
| 709 | } |
| 710 | } |
| 711 | |
| 712 | packet = hpsb_make_lockpacket(fi->host, node, addr, |
| 713 | req->req.misc, NULL, 0); |
| 714 | if (!packet) |
| 715 | return -ENOMEM; |
| 716 | |
| 717 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), |
| 718 | req->req.length)) { |
| 719 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 720 | break; |
| 721 | } |
| 722 | |
| 723 | req->data = packet->data; |
| 724 | req->req.length = 4; |
| 725 | break; |
| 726 | |
| 727 | case RAW1394_REQ_LOCK64: |
| 728 | DBGMSG("lock64_request called"); |
| 729 | if ((req->req.misc == EXTCODE_FETCH_ADD) |
| 730 | || (req->req.misc == EXTCODE_LITTLE_ADD)) { |
| 731 | if (req->req.length != 8) { |
| 732 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 733 | break; |
| 734 | } |
| 735 | } else { |
| 736 | if (req->req.length != 16) { |
| 737 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 738 | break; |
| 739 | } |
| 740 | } |
| 741 | packet = hpsb_make_lock64packet(fi->host, node, addr, |
| 742 | req->req.misc, NULL, 0); |
| 743 | if (!packet) |
| 744 | return -ENOMEM; |
| 745 | |
| 746 | if (copy_from_user(packet->data, int2ptr(req->req.sendb), |
| 747 | req->req.length)) { |
| 748 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 749 | break; |
| 750 | } |
| 751 | |
| 752 | req->data = packet->data; |
| 753 | req->req.length = 8; |
| 754 | break; |
| 755 | |
| 756 | default: |
| 757 | req->req.error = RAW1394_ERROR_STATE_ORDER; |
| 758 | } |
| 759 | |
| 760 | req->packet = packet; |
| 761 | |
| 762 | if (req->req.error) { |
| 763 | req->req.length = 0; |
| 764 | queue_complete_req(req); |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 765 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | } |
| 767 | |
| 768 | hpsb_set_packet_complete_task(packet, |
| 769 | (void (*)(void *))queue_complete_cb, req); |
| 770 | |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 771 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | list_add_tail(&req->list, &fi->req_pending); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 773 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | |
| 775 | packet->generation = req->req.generation; |
| 776 | |
| 777 | if (hpsb_send_packet(packet) < 0) { |
| 778 | req->req.error = RAW1394_ERROR_SEND_ERROR; |
| 779 | req->req.length = 0; |
| 780 | hpsb_free_tlabel(packet); |
| 781 | queue_complete_req(req); |
| 782 | } |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 783 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | } |
| 785 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | static int handle_async_send(struct file_info *fi, struct pending_request *req) |
| 787 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 788 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | struct hpsb_packet *packet; |
| 790 | int header_length = req->req.misc & 0xffff; |
| 791 | int expect_response = req->req.misc >> 16; |
Petr Vandrovec | 976da96 | 2007-05-13 22:14:44 -0700 | [diff] [blame] | 792 | size_t data_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | |
Stefan Richter | 7542e0e | 2007-03-25 22:22:40 +0200 | [diff] [blame] | 794 | if (header_length > req->req.length || header_length < 12 || |
| 795 | header_length > FIELD_SIZEOF(struct hpsb_packet, header)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 797 | req->req.length = 0; |
| 798 | queue_complete_req(req); |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 799 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | } |
| 801 | |
Petr Vandrovec | 976da96 | 2007-05-13 22:14:44 -0700 | [diff] [blame] | 802 | data_size = req->req.length - header_length; |
| 803 | packet = hpsb_alloc_packet(data_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | req->packet = packet; |
| 805 | if (!packet) |
| 806 | return -ENOMEM; |
| 807 | |
| 808 | if (copy_from_user(packet->header, int2ptr(req->req.sendb), |
| 809 | header_length)) { |
| 810 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 811 | req->req.length = 0; |
| 812 | queue_complete_req(req); |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 813 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | } |
| 815 | |
| 816 | if (copy_from_user |
| 817 | (packet->data, int2ptr(req->req.sendb) + header_length, |
Petr Vandrovec | 976da96 | 2007-05-13 22:14:44 -0700 | [diff] [blame] | 818 | data_size)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | req->req.error = RAW1394_ERROR_MEMFAULT; |
| 820 | req->req.length = 0; |
| 821 | queue_complete_req(req); |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 822 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | } |
| 824 | |
| 825 | packet->type = hpsb_async; |
| 826 | packet->node_id = packet->header[0] >> 16; |
| 827 | packet->tcode = (packet->header[0] >> 4) & 0xf; |
| 828 | packet->tlabel = (packet->header[0] >> 10) & 0x3f; |
| 829 | packet->host = fi->host; |
| 830 | packet->expect_response = expect_response; |
| 831 | packet->header_size = header_length; |
Petr Vandrovec | 976da96 | 2007-05-13 22:14:44 -0700 | [diff] [blame] | 832 | packet->data_size = data_size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | |
| 834 | req->req.length = 0; |
| 835 | hpsb_set_packet_complete_task(packet, |
| 836 | (void (*)(void *))queue_complete_cb, req); |
| 837 | |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 838 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | list_add_tail(&req->list, &fi->req_pending); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 840 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | |
| 842 | /* Update the generation of the packet just before sending. */ |
| 843 | packet->generation = req->req.generation; |
| 844 | |
| 845 | if (hpsb_send_packet(packet) < 0) { |
| 846 | req->req.error = RAW1394_ERROR_SEND_ERROR; |
| 847 | queue_complete_req(req); |
| 848 | } |
| 849 | |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 850 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | } |
| 852 | |
| 853 | static int arm_read(struct hpsb_host *host, int nodeid, quadlet_t * buffer, |
| 854 | u64 addr, size_t length, u16 flags) |
| 855 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 856 | unsigned long irqflags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | struct pending_request *req; |
| 858 | struct host_info *hi; |
| 859 | struct file_info *fi = NULL; |
| 860 | struct list_head *entry; |
| 861 | struct arm_addr *arm_addr = NULL; |
| 862 | struct arm_request *arm_req = NULL; |
| 863 | struct arm_response *arm_resp = NULL; |
| 864 | int found = 0, size = 0, rcode = -1; |
| 865 | struct arm_request_response *arm_req_resp = NULL; |
| 866 | |
Joe Perches | a5c52df | 2007-11-19 17:48:10 -0800 | [diff] [blame] | 867 | DBGMSG("arm_read called by node: %X " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 868 | "addr: %4.4x %8.8x length: %Zu", nodeid, |
| 869 | (u16) ((addr >> 32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF), |
| 870 | length); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 871 | spin_lock_irqsave(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | hi = find_host_info(host); /* search address-entry */ |
| 873 | if (hi != NULL) { |
| 874 | list_for_each_entry(fi, &hi->file_info_list, list) { |
| 875 | entry = fi->addr_list.next; |
| 876 | while (entry != &(fi->addr_list)) { |
| 877 | arm_addr = |
| 878 | list_entry(entry, struct arm_addr, |
| 879 | addr_list); |
| 880 | if (((arm_addr->start) <= (addr)) |
| 881 | && ((arm_addr->end) >= (addr + length))) { |
| 882 | found = 1; |
| 883 | break; |
| 884 | } |
| 885 | entry = entry->next; |
| 886 | } |
| 887 | if (found) { |
| 888 | break; |
| 889 | } |
| 890 | } |
| 891 | } |
| 892 | rcode = -1; |
| 893 | if (!found) { |
| 894 | printk(KERN_ERR "raw1394: arm_read FAILED addr_entry not found" |
| 895 | " -> rcode_address_error\n"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 896 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | return (RCODE_ADDRESS_ERROR); |
| 898 | } else { |
| 899 | DBGMSG("arm_read addr_entry FOUND"); |
| 900 | } |
| 901 | if (arm_addr->rec_length < length) { |
| 902 | DBGMSG("arm_read blocklength too big -> rcode_data_error"); |
| 903 | rcode = RCODE_DATA_ERROR; /* hardware error, data is unavailable */ |
| 904 | } |
| 905 | if (rcode == -1) { |
| 906 | if (arm_addr->access_rights & ARM_READ) { |
| 907 | if (!(arm_addr->client_transactions & ARM_READ)) { |
| 908 | memcpy(buffer, |
| 909 | (arm_addr->addr_space_buffer) + (addr - |
| 910 | (arm_addr-> |
| 911 | start)), |
| 912 | length); |
| 913 | DBGMSG("arm_read -> (rcode_complete)"); |
| 914 | rcode = RCODE_COMPLETE; |
| 915 | } |
| 916 | } else { |
| 917 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ |
| 918 | DBGMSG("arm_read -> rcode_type_error (access denied)"); |
| 919 | } |
| 920 | } |
| 921 | if (arm_addr->notification_options & ARM_READ) { |
| 922 | DBGMSG("arm_read -> entering notification-section"); |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 923 | req = __alloc_pending_request(GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 924 | if (!req) { |
| 925 | DBGMSG("arm_read -> rcode_conflict_error"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 926 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 928 | The request may be retried */ |
| 929 | } |
| 930 | if (rcode == RCODE_COMPLETE) { |
| 931 | size = |
| 932 | sizeof(struct arm_request) + |
| 933 | sizeof(struct arm_response) + |
| 934 | length * sizeof(byte_t) + |
| 935 | sizeof(struct arm_request_response); |
| 936 | } else { |
| 937 | size = |
| 938 | sizeof(struct arm_request) + |
| 939 | sizeof(struct arm_response) + |
| 940 | sizeof(struct arm_request_response); |
| 941 | } |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 942 | req->data = kmalloc(size, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 943 | if (!(req->data)) { |
| 944 | free_pending_request(req); |
| 945 | DBGMSG("arm_read -> rcode_conflict_error"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 946 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 948 | The request may be retried */ |
| 949 | } |
| 950 | req->free_data = 1; |
| 951 | req->file_info = fi; |
| 952 | req->req.type = RAW1394_REQ_ARM; |
| 953 | req->req.generation = get_hpsb_generation(host); |
| 954 | req->req.misc = |
| 955 | (((length << 16) & (0xFFFF0000)) | (ARM_READ & 0xFF)); |
| 956 | req->req.tag = arm_addr->arm_tag; |
| 957 | req->req.recvb = arm_addr->recvb; |
| 958 | req->req.length = size; |
| 959 | arm_req_resp = (struct arm_request_response *)(req->data); |
| 960 | arm_req = (struct arm_request *)((byte_t *) (req->data) + |
| 961 | (sizeof |
| 962 | (struct |
| 963 | arm_request_response))); |
| 964 | arm_resp = |
| 965 | (struct arm_response *)((byte_t *) (arm_req) + |
| 966 | (sizeof(struct arm_request))); |
| 967 | arm_req->buffer = NULL; |
| 968 | arm_resp->buffer = NULL; |
| 969 | if (rcode == RCODE_COMPLETE) { |
| 970 | byte_t *buf = |
| 971 | (byte_t *) arm_resp + sizeof(struct arm_response); |
| 972 | memcpy(buf, |
| 973 | (arm_addr->addr_space_buffer) + (addr - |
| 974 | (arm_addr-> |
| 975 | start)), |
| 976 | length); |
| 977 | arm_resp->buffer = |
| 978 | int2ptr((arm_addr->recvb) + |
| 979 | sizeof(struct arm_request_response) + |
| 980 | sizeof(struct arm_request) + |
| 981 | sizeof(struct arm_response)); |
| 982 | } |
| 983 | arm_resp->buffer_length = |
| 984 | (rcode == RCODE_COMPLETE) ? length : 0; |
| 985 | arm_resp->response_code = rcode; |
| 986 | arm_req->buffer_length = 0; |
| 987 | arm_req->generation = req->req.generation; |
| 988 | arm_req->extended_transaction_code = 0; |
| 989 | arm_req->destination_offset = addr; |
| 990 | arm_req->source_nodeid = nodeid; |
| 991 | arm_req->destination_nodeid = host->node_id; |
| 992 | arm_req->tlabel = (flags >> 10) & 0x3f; |
| 993 | arm_req->tcode = (flags >> 4) & 0x0f; |
| 994 | arm_req_resp->request = int2ptr((arm_addr->recvb) + |
| 995 | sizeof(struct |
| 996 | arm_request_response)); |
| 997 | arm_req_resp->response = |
| 998 | int2ptr((arm_addr->recvb) + |
| 999 | sizeof(struct arm_request_response) + |
| 1000 | sizeof(struct arm_request)); |
| 1001 | queue_complete_req(req); |
| 1002 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1003 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1004 | return (rcode); |
| 1005 | } |
| 1006 | |
| 1007 | static int arm_write(struct hpsb_host *host, int nodeid, int destid, |
| 1008 | quadlet_t * data, u64 addr, size_t length, u16 flags) |
| 1009 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1010 | unsigned long irqflags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1011 | struct pending_request *req; |
| 1012 | struct host_info *hi; |
| 1013 | struct file_info *fi = NULL; |
| 1014 | struct list_head *entry; |
| 1015 | struct arm_addr *arm_addr = NULL; |
| 1016 | struct arm_request *arm_req = NULL; |
| 1017 | struct arm_response *arm_resp = NULL; |
| 1018 | int found = 0, size = 0, rcode = -1, length_conflict = 0; |
| 1019 | struct arm_request_response *arm_req_resp = NULL; |
| 1020 | |
Joe Perches | a5c52df | 2007-11-19 17:48:10 -0800 | [diff] [blame] | 1021 | DBGMSG("arm_write called by node: %X " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1022 | "addr: %4.4x %8.8x length: %Zu", nodeid, |
| 1023 | (u16) ((addr >> 32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF), |
| 1024 | length); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1025 | spin_lock_irqsave(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1026 | hi = find_host_info(host); /* search address-entry */ |
| 1027 | if (hi != NULL) { |
| 1028 | list_for_each_entry(fi, &hi->file_info_list, list) { |
| 1029 | entry = fi->addr_list.next; |
| 1030 | while (entry != &(fi->addr_list)) { |
| 1031 | arm_addr = |
| 1032 | list_entry(entry, struct arm_addr, |
| 1033 | addr_list); |
| 1034 | if (((arm_addr->start) <= (addr)) |
| 1035 | && ((arm_addr->end) >= (addr + length))) { |
| 1036 | found = 1; |
| 1037 | break; |
| 1038 | } |
| 1039 | entry = entry->next; |
| 1040 | } |
| 1041 | if (found) { |
| 1042 | break; |
| 1043 | } |
| 1044 | } |
| 1045 | } |
| 1046 | rcode = -1; |
| 1047 | if (!found) { |
| 1048 | printk(KERN_ERR "raw1394: arm_write FAILED addr_entry not found" |
| 1049 | " -> rcode_address_error\n"); |
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_ADDRESS_ERROR); |
| 1052 | } else { |
| 1053 | DBGMSG("arm_write addr_entry FOUND"); |
| 1054 | } |
| 1055 | if (arm_addr->rec_length < length) { |
| 1056 | DBGMSG("arm_write blocklength too big -> rcode_data_error"); |
| 1057 | length_conflict = 1; |
| 1058 | rcode = RCODE_DATA_ERROR; /* hardware error, data is unavailable */ |
| 1059 | } |
| 1060 | if (rcode == -1) { |
| 1061 | if (arm_addr->access_rights & ARM_WRITE) { |
| 1062 | if (!(arm_addr->client_transactions & ARM_WRITE)) { |
| 1063 | memcpy((arm_addr->addr_space_buffer) + |
| 1064 | (addr - (arm_addr->start)), data, |
| 1065 | length); |
| 1066 | DBGMSG("arm_write -> (rcode_complete)"); |
| 1067 | rcode = RCODE_COMPLETE; |
| 1068 | } |
| 1069 | } else { |
| 1070 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ |
| 1071 | DBGMSG("arm_write -> rcode_type_error (access denied)"); |
| 1072 | } |
| 1073 | } |
| 1074 | if (arm_addr->notification_options & ARM_WRITE) { |
| 1075 | DBGMSG("arm_write -> entering notification-section"); |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 1076 | req = __alloc_pending_request(GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | if (!req) { |
| 1078 | DBGMSG("arm_write -> rcode_conflict_error"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1079 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1080 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 1081 | The request my be retried */ |
| 1082 | } |
| 1083 | size = |
| 1084 | sizeof(struct arm_request) + sizeof(struct arm_response) + |
| 1085 | (length) * sizeof(byte_t) + |
| 1086 | sizeof(struct arm_request_response); |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 1087 | req->data = kmalloc(size, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | if (!(req->data)) { |
| 1089 | free_pending_request(req); |
| 1090 | DBGMSG("arm_write -> rcode_conflict_error"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1091 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 1093 | The request may be retried */ |
| 1094 | } |
| 1095 | req->free_data = 1; |
| 1096 | req->file_info = fi; |
| 1097 | req->req.type = RAW1394_REQ_ARM; |
| 1098 | req->req.generation = get_hpsb_generation(host); |
| 1099 | req->req.misc = |
| 1100 | (((length << 16) & (0xFFFF0000)) | (ARM_WRITE & 0xFF)); |
| 1101 | req->req.tag = arm_addr->arm_tag; |
| 1102 | req->req.recvb = arm_addr->recvb; |
| 1103 | req->req.length = size; |
| 1104 | arm_req_resp = (struct arm_request_response *)(req->data); |
| 1105 | arm_req = (struct arm_request *)((byte_t *) (req->data) + |
| 1106 | (sizeof |
| 1107 | (struct |
| 1108 | arm_request_response))); |
| 1109 | arm_resp = |
| 1110 | (struct arm_response *)((byte_t *) (arm_req) + |
| 1111 | (sizeof(struct arm_request))); |
| 1112 | arm_resp->buffer = NULL; |
| 1113 | memcpy((byte_t *) arm_resp + sizeof(struct arm_response), |
| 1114 | data, length); |
| 1115 | arm_req->buffer = int2ptr((arm_addr->recvb) + |
| 1116 | sizeof(struct arm_request_response) + |
| 1117 | sizeof(struct arm_request) + |
| 1118 | sizeof(struct arm_response)); |
| 1119 | arm_req->buffer_length = length; |
| 1120 | arm_req->generation = req->req.generation; |
| 1121 | arm_req->extended_transaction_code = 0; |
| 1122 | arm_req->destination_offset = addr; |
| 1123 | arm_req->source_nodeid = nodeid; |
| 1124 | arm_req->destination_nodeid = destid; |
| 1125 | arm_req->tlabel = (flags >> 10) & 0x3f; |
| 1126 | arm_req->tcode = (flags >> 4) & 0x0f; |
| 1127 | arm_resp->buffer_length = 0; |
| 1128 | arm_resp->response_code = rcode; |
| 1129 | arm_req_resp->request = int2ptr((arm_addr->recvb) + |
| 1130 | sizeof(struct |
| 1131 | arm_request_response)); |
| 1132 | arm_req_resp->response = |
| 1133 | int2ptr((arm_addr->recvb) + |
| 1134 | sizeof(struct arm_request_response) + |
| 1135 | sizeof(struct arm_request)); |
| 1136 | queue_complete_req(req); |
| 1137 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1138 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1139 | return (rcode); |
| 1140 | } |
| 1141 | |
| 1142 | static int arm_lock(struct hpsb_host *host, int nodeid, quadlet_t * store, |
| 1143 | u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode, |
| 1144 | u16 flags) |
| 1145 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1146 | unsigned long irqflags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1147 | struct pending_request *req; |
| 1148 | struct host_info *hi; |
| 1149 | struct file_info *fi = NULL; |
| 1150 | struct list_head *entry; |
| 1151 | struct arm_addr *arm_addr = NULL; |
| 1152 | struct arm_request *arm_req = NULL; |
| 1153 | struct arm_response *arm_resp = NULL; |
| 1154 | int found = 0, size = 0, rcode = -1; |
| 1155 | quadlet_t old, new; |
| 1156 | struct arm_request_response *arm_req_resp = NULL; |
| 1157 | |
| 1158 | if (((ext_tcode & 0xFF) == EXTCODE_FETCH_ADD) || |
| 1159 | ((ext_tcode & 0xFF) == EXTCODE_LITTLE_ADD)) { |
| 1160 | DBGMSG("arm_lock called by node: %X " |
| 1161 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X", |
| 1162 | nodeid, (u16) ((addr >> 32) & 0xFFFF), |
| 1163 | (u32) (addr & 0xFFFFFFFF), ext_tcode & 0xFF, |
| 1164 | be32_to_cpu(data)); |
| 1165 | } else { |
| 1166 | DBGMSG("arm_lock called by node: %X " |
| 1167 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X arg: %8.8X", |
| 1168 | nodeid, (u16) ((addr >> 32) & 0xFFFF), |
| 1169 | (u32) (addr & 0xFFFFFFFF), ext_tcode & 0xFF, |
| 1170 | be32_to_cpu(data), be32_to_cpu(arg)); |
| 1171 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1172 | spin_lock_irqsave(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | hi = find_host_info(host); /* search address-entry */ |
| 1174 | if (hi != NULL) { |
| 1175 | list_for_each_entry(fi, &hi->file_info_list, list) { |
| 1176 | entry = fi->addr_list.next; |
| 1177 | while (entry != &(fi->addr_list)) { |
| 1178 | arm_addr = |
| 1179 | list_entry(entry, struct arm_addr, |
| 1180 | addr_list); |
| 1181 | if (((arm_addr->start) <= (addr)) |
| 1182 | && ((arm_addr->end) >= |
| 1183 | (addr + sizeof(*store)))) { |
| 1184 | found = 1; |
| 1185 | break; |
| 1186 | } |
| 1187 | entry = entry->next; |
| 1188 | } |
| 1189 | if (found) { |
| 1190 | break; |
| 1191 | } |
| 1192 | } |
| 1193 | } |
| 1194 | rcode = -1; |
| 1195 | if (!found) { |
| 1196 | printk(KERN_ERR "raw1394: arm_lock FAILED addr_entry not found" |
| 1197 | " -> rcode_address_error\n"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1198 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1199 | return (RCODE_ADDRESS_ERROR); |
| 1200 | } else { |
| 1201 | DBGMSG("arm_lock addr_entry FOUND"); |
| 1202 | } |
| 1203 | if (rcode == -1) { |
| 1204 | if (arm_addr->access_rights & ARM_LOCK) { |
| 1205 | if (!(arm_addr->client_transactions & ARM_LOCK)) { |
| 1206 | memcpy(&old, |
| 1207 | (arm_addr->addr_space_buffer) + (addr - |
| 1208 | (arm_addr-> |
| 1209 | start)), |
| 1210 | sizeof(old)); |
| 1211 | switch (ext_tcode) { |
| 1212 | case (EXTCODE_MASK_SWAP): |
| 1213 | new = data | (old & ~arg); |
| 1214 | break; |
| 1215 | case (EXTCODE_COMPARE_SWAP): |
| 1216 | if (old == arg) { |
| 1217 | new = data; |
| 1218 | } else { |
| 1219 | new = old; |
| 1220 | } |
| 1221 | break; |
| 1222 | case (EXTCODE_FETCH_ADD): |
| 1223 | new = |
| 1224 | cpu_to_be32(be32_to_cpu(data) + |
| 1225 | be32_to_cpu(old)); |
| 1226 | break; |
| 1227 | case (EXTCODE_LITTLE_ADD): |
| 1228 | new = |
| 1229 | cpu_to_le32(le32_to_cpu(data) + |
| 1230 | le32_to_cpu(old)); |
| 1231 | break; |
| 1232 | case (EXTCODE_BOUNDED_ADD): |
| 1233 | if (old != arg) { |
| 1234 | new = |
| 1235 | cpu_to_be32(be32_to_cpu |
| 1236 | (data) + |
| 1237 | be32_to_cpu |
| 1238 | (old)); |
| 1239 | } else { |
| 1240 | new = old; |
| 1241 | } |
| 1242 | break; |
| 1243 | case (EXTCODE_WRAP_ADD): |
| 1244 | if (old != arg) { |
| 1245 | new = |
| 1246 | cpu_to_be32(be32_to_cpu |
| 1247 | (data) + |
| 1248 | be32_to_cpu |
| 1249 | (old)); |
| 1250 | } else { |
| 1251 | new = data; |
| 1252 | } |
| 1253 | break; |
| 1254 | default: |
| 1255 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ |
| 1256 | printk(KERN_ERR |
| 1257 | "raw1394: arm_lock FAILED " |
| 1258 | "ext_tcode not allowed -> rcode_type_error\n"); |
| 1259 | break; |
| 1260 | } /*switch */ |
| 1261 | if (rcode == -1) { |
| 1262 | DBGMSG("arm_lock -> (rcode_complete)"); |
| 1263 | rcode = RCODE_COMPLETE; |
| 1264 | memcpy(store, &old, sizeof(*store)); |
| 1265 | memcpy((arm_addr->addr_space_buffer) + |
| 1266 | (addr - (arm_addr->start)), |
| 1267 | &new, sizeof(*store)); |
| 1268 | } |
| 1269 | } |
| 1270 | } else { |
| 1271 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ |
| 1272 | DBGMSG("arm_lock -> rcode_type_error (access denied)"); |
| 1273 | } |
| 1274 | } |
| 1275 | if (arm_addr->notification_options & ARM_LOCK) { |
| 1276 | byte_t *buf1, *buf2; |
| 1277 | DBGMSG("arm_lock -> entering notification-section"); |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 1278 | req = __alloc_pending_request(GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1279 | if (!req) { |
| 1280 | DBGMSG("arm_lock -> rcode_conflict_error"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1281 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1282 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 1283 | The request may be retried */ |
| 1284 | } |
| 1285 | size = sizeof(struct arm_request) + sizeof(struct arm_response) + 3 * sizeof(*store) + sizeof(struct arm_request_response); /* maximum */ |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 1286 | req->data = kmalloc(size, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1287 | if (!(req->data)) { |
| 1288 | free_pending_request(req); |
| 1289 | DBGMSG("arm_lock -> rcode_conflict_error"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1290 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1291 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 1292 | The request may be retried */ |
| 1293 | } |
| 1294 | req->free_data = 1; |
| 1295 | arm_req_resp = (struct arm_request_response *)(req->data); |
| 1296 | arm_req = (struct arm_request *)((byte_t *) (req->data) + |
| 1297 | (sizeof |
| 1298 | (struct |
| 1299 | arm_request_response))); |
| 1300 | arm_resp = |
| 1301 | (struct arm_response *)((byte_t *) (arm_req) + |
| 1302 | (sizeof(struct arm_request))); |
| 1303 | buf1 = (byte_t *) arm_resp + sizeof(struct arm_response); |
| 1304 | buf2 = buf1 + 2 * sizeof(*store); |
| 1305 | if ((ext_tcode == EXTCODE_FETCH_ADD) || |
| 1306 | (ext_tcode == EXTCODE_LITTLE_ADD)) { |
| 1307 | arm_req->buffer_length = sizeof(*store); |
| 1308 | memcpy(buf1, &data, sizeof(*store)); |
| 1309 | |
| 1310 | } else { |
| 1311 | arm_req->buffer_length = 2 * sizeof(*store); |
| 1312 | memcpy(buf1, &arg, sizeof(*store)); |
| 1313 | memcpy(buf1 + sizeof(*store), &data, sizeof(*store)); |
| 1314 | } |
| 1315 | if (rcode == RCODE_COMPLETE) { |
| 1316 | arm_resp->buffer_length = sizeof(*store); |
| 1317 | memcpy(buf2, &old, sizeof(*store)); |
| 1318 | } else { |
| 1319 | arm_resp->buffer_length = 0; |
| 1320 | } |
| 1321 | req->file_info = fi; |
| 1322 | req->req.type = RAW1394_REQ_ARM; |
| 1323 | req->req.generation = get_hpsb_generation(host); |
| 1324 | req->req.misc = ((((sizeof(*store)) << 16) & (0xFFFF0000)) | |
| 1325 | (ARM_LOCK & 0xFF)); |
| 1326 | req->req.tag = arm_addr->arm_tag; |
| 1327 | req->req.recvb = arm_addr->recvb; |
| 1328 | req->req.length = size; |
| 1329 | arm_req->generation = req->req.generation; |
| 1330 | arm_req->extended_transaction_code = ext_tcode; |
| 1331 | arm_req->destination_offset = addr; |
| 1332 | arm_req->source_nodeid = nodeid; |
| 1333 | arm_req->destination_nodeid = host->node_id; |
| 1334 | arm_req->tlabel = (flags >> 10) & 0x3f; |
| 1335 | arm_req->tcode = (flags >> 4) & 0x0f; |
| 1336 | arm_resp->response_code = rcode; |
| 1337 | arm_req_resp->request = int2ptr((arm_addr->recvb) + |
| 1338 | sizeof(struct |
| 1339 | arm_request_response)); |
| 1340 | arm_req_resp->response = |
| 1341 | int2ptr((arm_addr->recvb) + |
| 1342 | sizeof(struct arm_request_response) + |
| 1343 | sizeof(struct arm_request)); |
| 1344 | arm_req->buffer = |
| 1345 | int2ptr((arm_addr->recvb) + |
| 1346 | sizeof(struct arm_request_response) + |
| 1347 | sizeof(struct arm_request) + |
| 1348 | sizeof(struct arm_response)); |
| 1349 | arm_resp->buffer = |
| 1350 | int2ptr((arm_addr->recvb) + |
| 1351 | sizeof(struct arm_request_response) + |
| 1352 | sizeof(struct arm_request) + |
| 1353 | sizeof(struct arm_response) + 2 * sizeof(*store)); |
| 1354 | queue_complete_req(req); |
| 1355 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1356 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1357 | return (rcode); |
| 1358 | } |
| 1359 | |
| 1360 | static int arm_lock64(struct hpsb_host *host, int nodeid, octlet_t * store, |
| 1361 | u64 addr, octlet_t data, octlet_t arg, int ext_tcode, |
| 1362 | u16 flags) |
| 1363 | { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1364 | unsigned long irqflags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1365 | struct pending_request *req; |
| 1366 | struct host_info *hi; |
| 1367 | struct file_info *fi = NULL; |
| 1368 | struct list_head *entry; |
| 1369 | struct arm_addr *arm_addr = NULL; |
| 1370 | struct arm_request *arm_req = NULL; |
| 1371 | struct arm_response *arm_resp = NULL; |
| 1372 | int found = 0, size = 0, rcode = -1; |
| 1373 | octlet_t old, new; |
| 1374 | struct arm_request_response *arm_req_resp = NULL; |
| 1375 | |
| 1376 | if (((ext_tcode & 0xFF) == EXTCODE_FETCH_ADD) || |
| 1377 | ((ext_tcode & 0xFF) == EXTCODE_LITTLE_ADD)) { |
| 1378 | DBGMSG("arm_lock64 called by node: %X " |
| 1379 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X %8.8X ", |
| 1380 | nodeid, (u16) ((addr >> 32) & 0xFFFF), |
| 1381 | (u32) (addr & 0xFFFFFFFF), |
| 1382 | ext_tcode & 0xFF, |
| 1383 | (u32) ((be64_to_cpu(data) >> 32) & 0xFFFFFFFF), |
| 1384 | (u32) (be64_to_cpu(data) & 0xFFFFFFFF)); |
| 1385 | } else { |
| 1386 | DBGMSG("arm_lock64 called by node: %X " |
| 1387 | "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X %8.8X arg: " |
| 1388 | "%8.8X %8.8X ", |
| 1389 | nodeid, (u16) ((addr >> 32) & 0xFFFF), |
| 1390 | (u32) (addr & 0xFFFFFFFF), |
| 1391 | ext_tcode & 0xFF, |
| 1392 | (u32) ((be64_to_cpu(data) >> 32) & 0xFFFFFFFF), |
| 1393 | (u32) (be64_to_cpu(data) & 0xFFFFFFFF), |
| 1394 | (u32) ((be64_to_cpu(arg) >> 32) & 0xFFFFFFFF), |
| 1395 | (u32) (be64_to_cpu(arg) & 0xFFFFFFFF)); |
| 1396 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1397 | spin_lock_irqsave(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1398 | hi = find_host_info(host); /* search addressentry in file_info's for host */ |
| 1399 | if (hi != NULL) { |
| 1400 | list_for_each_entry(fi, &hi->file_info_list, list) { |
| 1401 | entry = fi->addr_list.next; |
| 1402 | while (entry != &(fi->addr_list)) { |
| 1403 | arm_addr = |
| 1404 | list_entry(entry, struct arm_addr, |
| 1405 | addr_list); |
| 1406 | if (((arm_addr->start) <= (addr)) |
| 1407 | && ((arm_addr->end) >= |
| 1408 | (addr + sizeof(*store)))) { |
| 1409 | found = 1; |
| 1410 | break; |
| 1411 | } |
| 1412 | entry = entry->next; |
| 1413 | } |
| 1414 | if (found) { |
| 1415 | break; |
| 1416 | } |
| 1417 | } |
| 1418 | } |
| 1419 | rcode = -1; |
| 1420 | if (!found) { |
| 1421 | printk(KERN_ERR |
| 1422 | "raw1394: arm_lock64 FAILED addr_entry not found" |
| 1423 | " -> rcode_address_error\n"); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1424 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1425 | return (RCODE_ADDRESS_ERROR); |
| 1426 | } else { |
| 1427 | DBGMSG("arm_lock64 addr_entry FOUND"); |
| 1428 | } |
| 1429 | if (rcode == -1) { |
| 1430 | if (arm_addr->access_rights & ARM_LOCK) { |
| 1431 | if (!(arm_addr->client_transactions & ARM_LOCK)) { |
| 1432 | memcpy(&old, |
| 1433 | (arm_addr->addr_space_buffer) + (addr - |
| 1434 | (arm_addr-> |
| 1435 | start)), |
| 1436 | sizeof(old)); |
| 1437 | switch (ext_tcode) { |
| 1438 | case (EXTCODE_MASK_SWAP): |
| 1439 | new = data | (old & ~arg); |
| 1440 | break; |
| 1441 | case (EXTCODE_COMPARE_SWAP): |
| 1442 | if (old == arg) { |
| 1443 | new = data; |
| 1444 | } else { |
| 1445 | new = old; |
| 1446 | } |
| 1447 | break; |
| 1448 | case (EXTCODE_FETCH_ADD): |
| 1449 | new = |
| 1450 | cpu_to_be64(be64_to_cpu(data) + |
| 1451 | be64_to_cpu(old)); |
| 1452 | break; |
| 1453 | case (EXTCODE_LITTLE_ADD): |
| 1454 | new = |
| 1455 | cpu_to_le64(le64_to_cpu(data) + |
| 1456 | le64_to_cpu(old)); |
| 1457 | break; |
| 1458 | case (EXTCODE_BOUNDED_ADD): |
| 1459 | if (old != arg) { |
| 1460 | new = |
| 1461 | cpu_to_be64(be64_to_cpu |
| 1462 | (data) + |
| 1463 | be64_to_cpu |
| 1464 | (old)); |
| 1465 | } else { |
| 1466 | new = old; |
| 1467 | } |
| 1468 | break; |
| 1469 | case (EXTCODE_WRAP_ADD): |
| 1470 | if (old != arg) { |
| 1471 | new = |
| 1472 | cpu_to_be64(be64_to_cpu |
| 1473 | (data) + |
| 1474 | be64_to_cpu |
| 1475 | (old)); |
| 1476 | } else { |
| 1477 | new = data; |
| 1478 | } |
| 1479 | break; |
| 1480 | default: |
| 1481 | printk(KERN_ERR |
| 1482 | "raw1394: arm_lock64 FAILED " |
| 1483 | "ext_tcode not allowed -> rcode_type_error\n"); |
| 1484 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ |
| 1485 | break; |
| 1486 | } /*switch */ |
| 1487 | if (rcode == -1) { |
| 1488 | DBGMSG |
| 1489 | ("arm_lock64 -> (rcode_complete)"); |
| 1490 | rcode = RCODE_COMPLETE; |
| 1491 | memcpy(store, &old, sizeof(*store)); |
| 1492 | memcpy((arm_addr->addr_space_buffer) + |
| 1493 | (addr - (arm_addr->start)), |
| 1494 | &new, sizeof(*store)); |
| 1495 | } |
| 1496 | } |
| 1497 | } else { |
| 1498 | rcode = RCODE_TYPE_ERROR; /* function not allowed */ |
| 1499 | DBGMSG |
| 1500 | ("arm_lock64 -> rcode_type_error (access denied)"); |
| 1501 | } |
| 1502 | } |
| 1503 | if (arm_addr->notification_options & ARM_LOCK) { |
| 1504 | byte_t *buf1, *buf2; |
| 1505 | DBGMSG("arm_lock64 -> entering notification-section"); |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 1506 | req = __alloc_pending_request(GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1507 | if (!req) { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1508 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1509 | DBGMSG("arm_lock64 -> rcode_conflict_error"); |
| 1510 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 1511 | The request may be retried */ |
| 1512 | } |
| 1513 | size = sizeof(struct arm_request) + sizeof(struct arm_response) + 3 * sizeof(*store) + sizeof(struct arm_request_response); /* maximum */ |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 1514 | req->data = kmalloc(size, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1515 | if (!(req->data)) { |
| 1516 | free_pending_request(req); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1517 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1518 | DBGMSG("arm_lock64 -> rcode_conflict_error"); |
| 1519 | return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected. |
| 1520 | The request may be retried */ |
| 1521 | } |
| 1522 | req->free_data = 1; |
| 1523 | arm_req_resp = (struct arm_request_response *)(req->data); |
| 1524 | arm_req = (struct arm_request *)((byte_t *) (req->data) + |
| 1525 | (sizeof |
| 1526 | (struct |
| 1527 | arm_request_response))); |
| 1528 | arm_resp = |
| 1529 | (struct arm_response *)((byte_t *) (arm_req) + |
| 1530 | (sizeof(struct arm_request))); |
| 1531 | buf1 = (byte_t *) arm_resp + sizeof(struct arm_response); |
| 1532 | buf2 = buf1 + 2 * sizeof(*store); |
| 1533 | if ((ext_tcode == EXTCODE_FETCH_ADD) || |
| 1534 | (ext_tcode == EXTCODE_LITTLE_ADD)) { |
| 1535 | arm_req->buffer_length = sizeof(*store); |
| 1536 | memcpy(buf1, &data, sizeof(*store)); |
| 1537 | |
| 1538 | } else { |
| 1539 | arm_req->buffer_length = 2 * sizeof(*store); |
| 1540 | memcpy(buf1, &arg, sizeof(*store)); |
| 1541 | memcpy(buf1 + sizeof(*store), &data, sizeof(*store)); |
| 1542 | } |
| 1543 | if (rcode == RCODE_COMPLETE) { |
| 1544 | arm_resp->buffer_length = sizeof(*store); |
| 1545 | memcpy(buf2, &old, sizeof(*store)); |
| 1546 | } else { |
| 1547 | arm_resp->buffer_length = 0; |
| 1548 | } |
| 1549 | req->file_info = fi; |
| 1550 | req->req.type = RAW1394_REQ_ARM; |
| 1551 | req->req.generation = get_hpsb_generation(host); |
| 1552 | req->req.misc = ((((sizeof(*store)) << 16) & (0xFFFF0000)) | |
| 1553 | (ARM_LOCK & 0xFF)); |
| 1554 | req->req.tag = arm_addr->arm_tag; |
| 1555 | req->req.recvb = arm_addr->recvb; |
| 1556 | req->req.length = size; |
| 1557 | arm_req->generation = req->req.generation; |
| 1558 | arm_req->extended_transaction_code = ext_tcode; |
| 1559 | arm_req->destination_offset = addr; |
| 1560 | arm_req->source_nodeid = nodeid; |
| 1561 | arm_req->destination_nodeid = host->node_id; |
| 1562 | arm_req->tlabel = (flags >> 10) & 0x3f; |
| 1563 | arm_req->tcode = (flags >> 4) & 0x0f; |
| 1564 | arm_resp->response_code = rcode; |
| 1565 | arm_req_resp->request = int2ptr((arm_addr->recvb) + |
| 1566 | sizeof(struct |
| 1567 | arm_request_response)); |
| 1568 | arm_req_resp->response = |
| 1569 | int2ptr((arm_addr->recvb) + |
| 1570 | sizeof(struct arm_request_response) + |
| 1571 | sizeof(struct arm_request)); |
| 1572 | arm_req->buffer = |
| 1573 | int2ptr((arm_addr->recvb) + |
| 1574 | sizeof(struct arm_request_response) + |
| 1575 | sizeof(struct arm_request) + |
| 1576 | sizeof(struct arm_response)); |
| 1577 | arm_resp->buffer = |
| 1578 | int2ptr((arm_addr->recvb) + |
| 1579 | sizeof(struct arm_request_response) + |
| 1580 | sizeof(struct arm_request) + |
| 1581 | sizeof(struct arm_response) + 2 * sizeof(*store)); |
| 1582 | queue_complete_req(req); |
| 1583 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1584 | spin_unlock_irqrestore(&host_info_lock, irqflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1585 | return (rcode); |
| 1586 | } |
| 1587 | |
| 1588 | static int arm_register(struct file_info *fi, struct pending_request *req) |
| 1589 | { |
| 1590 | int retval; |
| 1591 | struct arm_addr *addr; |
| 1592 | struct host_info *hi; |
| 1593 | struct file_info *fi_hlp = NULL; |
| 1594 | struct list_head *entry; |
| 1595 | struct arm_addr *arm_addr = NULL; |
| 1596 | int same_host, another_host; |
| 1597 | unsigned long flags; |
| 1598 | |
| 1599 | DBGMSG("arm_register called " |
| 1600 | "addr(Offset): %8.8x %8.8x length: %u " |
| 1601 | "rights: %2.2X notify: %2.2X " |
| 1602 | "max_blk_len: %4.4X", |
| 1603 | (u32) ((req->req.address >> 32) & 0xFFFF), |
| 1604 | (u32) (req->req.address & 0xFFFFFFFF), |
| 1605 | req->req.length, ((req->req.misc >> 8) & 0xFF), |
| 1606 | (req->req.misc & 0xFF), ((req->req.misc >> 16) & 0xFFFF)); |
| 1607 | /* check addressrange */ |
| 1608 | if ((((req->req.address) & ~(0xFFFFFFFFFFFFULL)) != 0) || |
| 1609 | (((req->req.address + req->req.length) & ~(0xFFFFFFFFFFFFULL)) != |
| 1610 | 0)) { |
| 1611 | req->req.length = 0; |
| 1612 | return (-EINVAL); |
| 1613 | } |
| 1614 | /* addr-list-entry for fileinfo */ |
Christoph Lameter | e94b176 | 2006-12-06 20:33:17 -0800 | [diff] [blame] | 1615 | addr = kmalloc(sizeof(*addr), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1616 | if (!addr) { |
| 1617 | req->req.length = 0; |
| 1618 | return (-ENOMEM); |
| 1619 | } |
| 1620 | /* allocation of addr_space_buffer */ |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 1621 | addr->addr_space_buffer = vmalloc(req->req.length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1622 | if (!(addr->addr_space_buffer)) { |
| 1623 | kfree(addr); |
| 1624 | req->req.length = 0; |
| 1625 | return (-ENOMEM); |
| 1626 | } |
| 1627 | /* initialization of addr_space_buffer */ |
| 1628 | if ((req->req.sendb) == (unsigned long)NULL) { |
| 1629 | /* init: set 0 */ |
| 1630 | memset(addr->addr_space_buffer, 0, req->req.length); |
| 1631 | } else { |
| 1632 | /* init: user -> kernel */ |
| 1633 | if (copy_from_user |
| 1634 | (addr->addr_space_buffer, int2ptr(req->req.sendb), |
| 1635 | req->req.length)) { |
| 1636 | vfree(addr->addr_space_buffer); |
| 1637 | kfree(addr); |
| 1638 | return (-EFAULT); |
| 1639 | } |
| 1640 | } |
| 1641 | INIT_LIST_HEAD(&addr->addr_list); |
| 1642 | addr->arm_tag = req->req.tag; |
| 1643 | addr->start = req->req.address; |
| 1644 | addr->end = req->req.address + req->req.length; |
| 1645 | addr->access_rights = (u8) (req->req.misc & 0x0F); |
| 1646 | addr->notification_options = (u8) ((req->req.misc >> 4) & 0x0F); |
| 1647 | addr->client_transactions = (u8) ((req->req.misc >> 8) & 0x0F); |
| 1648 | addr->access_rights |= addr->client_transactions; |
| 1649 | addr->notification_options |= addr->client_transactions; |
| 1650 | addr->recvb = req->req.recvb; |
| 1651 | addr->rec_length = (u16) ((req->req.misc >> 16) & 0xFFFF); |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 1652 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1653 | spin_lock_irqsave(&host_info_lock, flags); |
| 1654 | hi = find_host_info(fi->host); |
| 1655 | same_host = 0; |
| 1656 | another_host = 0; |
| 1657 | /* same host with address-entry containing same addressrange ? */ |
| 1658 | list_for_each_entry(fi_hlp, &hi->file_info_list, list) { |
| 1659 | entry = fi_hlp->addr_list.next; |
| 1660 | while (entry != &(fi_hlp->addr_list)) { |
| 1661 | arm_addr = |
| 1662 | list_entry(entry, struct arm_addr, addr_list); |
| 1663 | if ((arm_addr->start == addr->start) |
| 1664 | && (arm_addr->end == addr->end)) { |
| 1665 | DBGMSG("same host ownes same " |
| 1666 | "addressrange -> EALREADY"); |
| 1667 | same_host = 1; |
| 1668 | break; |
| 1669 | } |
| 1670 | entry = entry->next; |
| 1671 | } |
| 1672 | if (same_host) { |
| 1673 | break; |
| 1674 | } |
| 1675 | } |
| 1676 | if (same_host) { |
| 1677 | /* addressrange occupied by same host */ |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 1678 | spin_unlock_irqrestore(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1679 | vfree(addr->addr_space_buffer); |
| 1680 | kfree(addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1681 | return (-EALREADY); |
| 1682 | } |
| 1683 | /* another host with valid address-entry containing same addressrange */ |
| 1684 | list_for_each_entry(hi, &host_info_list, list) { |
| 1685 | if (hi->host != fi->host) { |
| 1686 | list_for_each_entry(fi_hlp, &hi->file_info_list, list) { |
| 1687 | entry = fi_hlp->addr_list.next; |
| 1688 | while (entry != &(fi_hlp->addr_list)) { |
| 1689 | arm_addr = |
| 1690 | list_entry(entry, struct arm_addr, |
| 1691 | addr_list); |
| 1692 | if ((arm_addr->start == addr->start) |
| 1693 | && (arm_addr->end == addr->end)) { |
| 1694 | DBGMSG |
| 1695 | ("another host ownes same " |
| 1696 | "addressrange"); |
| 1697 | another_host = 1; |
| 1698 | break; |
| 1699 | } |
| 1700 | entry = entry->next; |
| 1701 | } |
| 1702 | if (another_host) { |
| 1703 | break; |
| 1704 | } |
| 1705 | } |
| 1706 | } |
| 1707 | } |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 1708 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1709 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1710 | if (another_host) { |
| 1711 | DBGMSG("another hosts entry is valid -> SUCCESS"); |
| 1712 | if (copy_to_user(int2ptr(req->req.recvb), |
| 1713 | &addr->start, sizeof(u64))) { |
| 1714 | printk(KERN_ERR "raw1394: arm_register failed " |
| 1715 | " address-range-entry is invalid -> EFAULT !!!\n"); |
| 1716 | vfree(addr->addr_space_buffer); |
| 1717 | kfree(addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1718 | return (-EFAULT); |
| 1719 | } |
| 1720 | free_pending_request(req); /* immediate success or fail */ |
| 1721 | /* INSERT ENTRY */ |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 1722 | spin_lock_irqsave(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1723 | list_add_tail(&addr->addr_list, &fi->addr_list); |
| 1724 | spin_unlock_irqrestore(&host_info_lock, flags); |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 1725 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1726 | } |
| 1727 | retval = |
| 1728 | hpsb_register_addrspace(&raw1394_highlevel, fi->host, &arm_ops, |
| 1729 | req->req.address, |
| 1730 | req->req.address + req->req.length); |
| 1731 | if (retval) { |
| 1732 | /* INSERT ENTRY */ |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 1733 | spin_lock_irqsave(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1734 | list_add_tail(&addr->addr_list, &fi->addr_list); |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 1735 | spin_unlock_irqrestore(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1736 | } else { |
| 1737 | DBGMSG("arm_register failed errno: %d \n", retval); |
| 1738 | vfree(addr->addr_space_buffer); |
| 1739 | kfree(addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1740 | return (-EALREADY); |
| 1741 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1742 | free_pending_request(req); /* immediate success or fail */ |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 1743 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1744 | } |
| 1745 | |
| 1746 | static int arm_unregister(struct file_info *fi, struct pending_request *req) |
| 1747 | { |
| 1748 | int found = 0; |
| 1749 | int retval = 0; |
| 1750 | struct list_head *entry; |
| 1751 | struct arm_addr *addr = NULL; |
| 1752 | struct host_info *hi; |
| 1753 | struct file_info *fi_hlp = NULL; |
| 1754 | struct arm_addr *arm_addr = NULL; |
| 1755 | int another_host; |
| 1756 | unsigned long flags; |
| 1757 | |
| 1758 | DBGMSG("arm_Unregister called addr(Offset): " |
| 1759 | "%8.8x %8.8x", |
| 1760 | (u32) ((req->req.address >> 32) & 0xFFFF), |
| 1761 | (u32) (req->req.address & 0xFFFFFFFF)); |
| 1762 | spin_lock_irqsave(&host_info_lock, flags); |
| 1763 | /* get addr */ |
| 1764 | entry = fi->addr_list.next; |
| 1765 | while (entry != &(fi->addr_list)) { |
| 1766 | addr = list_entry(entry, struct arm_addr, addr_list); |
| 1767 | if (addr->start == req->req.address) { |
| 1768 | found = 1; |
| 1769 | break; |
| 1770 | } |
| 1771 | entry = entry->next; |
| 1772 | } |
| 1773 | if (!found) { |
| 1774 | DBGMSG("arm_Unregister addr not found"); |
| 1775 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1776 | return (-EINVAL); |
| 1777 | } |
| 1778 | DBGMSG("arm_Unregister addr found"); |
| 1779 | another_host = 0; |
| 1780 | /* another host with valid address-entry containing |
| 1781 | same addressrange */ |
| 1782 | list_for_each_entry(hi, &host_info_list, list) { |
| 1783 | if (hi->host != fi->host) { |
| 1784 | list_for_each_entry(fi_hlp, &hi->file_info_list, list) { |
| 1785 | entry = fi_hlp->addr_list.next; |
| 1786 | while (entry != &(fi_hlp->addr_list)) { |
| 1787 | arm_addr = list_entry(entry, |
| 1788 | struct arm_addr, |
| 1789 | addr_list); |
| 1790 | if (arm_addr->start == addr->start) { |
| 1791 | DBGMSG("another host ownes " |
| 1792 | "same addressrange"); |
| 1793 | another_host = 1; |
| 1794 | break; |
| 1795 | } |
| 1796 | entry = entry->next; |
| 1797 | } |
| 1798 | if (another_host) { |
| 1799 | break; |
| 1800 | } |
| 1801 | } |
| 1802 | } |
| 1803 | } |
| 1804 | if (another_host) { |
| 1805 | DBGMSG("delete entry from list -> success"); |
| 1806 | list_del(&addr->addr_list); |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 1807 | spin_unlock_irqrestore(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1808 | vfree(addr->addr_space_buffer); |
| 1809 | kfree(addr); |
| 1810 | free_pending_request(req); /* immediate success or fail */ |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 1811 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1812 | } |
| 1813 | retval = |
| 1814 | hpsb_unregister_addrspace(&raw1394_highlevel, fi->host, |
| 1815 | addr->start); |
| 1816 | if (!retval) { |
| 1817 | printk(KERN_ERR "raw1394: arm_Unregister failed -> EINVAL\n"); |
| 1818 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1819 | return (-EINVAL); |
| 1820 | } |
| 1821 | DBGMSG("delete entry from list -> success"); |
| 1822 | list_del(&addr->addr_list); |
| 1823 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1824 | vfree(addr->addr_space_buffer); |
| 1825 | kfree(addr); |
| 1826 | free_pending_request(req); /* immediate success or fail */ |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 1827 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1828 | } |
| 1829 | |
| 1830 | /* Copy data from ARM buffer(s) to user buffer. */ |
| 1831 | static int arm_get_buf(struct file_info *fi, struct pending_request *req) |
| 1832 | { |
| 1833 | struct arm_addr *arm_addr = NULL; |
| 1834 | unsigned long flags; |
| 1835 | unsigned long offset; |
| 1836 | |
| 1837 | struct list_head *entry; |
| 1838 | |
| 1839 | DBGMSG("arm_get_buf " |
| 1840 | "addr(Offset): %04X %08X length: %u", |
| 1841 | (u32) ((req->req.address >> 32) & 0xFFFF), |
| 1842 | (u32) (req->req.address & 0xFFFFFFFF), (u32) req->req.length); |
| 1843 | |
| 1844 | spin_lock_irqsave(&host_info_lock, flags); |
| 1845 | entry = fi->addr_list.next; |
| 1846 | while (entry != &(fi->addr_list)) { |
| 1847 | arm_addr = list_entry(entry, struct arm_addr, addr_list); |
| 1848 | if ((arm_addr->start <= req->req.address) && |
| 1849 | (arm_addr->end > req->req.address)) { |
| 1850 | if (req->req.address + req->req.length <= arm_addr->end) { |
| 1851 | offset = req->req.address - arm_addr->start; |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 1852 | spin_unlock_irqrestore(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1853 | |
| 1854 | DBGMSG |
| 1855 | ("arm_get_buf copy_to_user( %08X, %p, %u )", |
| 1856 | (u32) req->req.recvb, |
| 1857 | arm_addr->addr_space_buffer + offset, |
| 1858 | (u32) req->req.length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1859 | if (copy_to_user |
| 1860 | (int2ptr(req->req.recvb), |
| 1861 | arm_addr->addr_space_buffer + offset, |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 1862 | req->req.length)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1863 | return (-EFAULT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1864 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1865 | /* We have to free the request, because we |
| 1866 | * queue no response, and therefore nobody |
| 1867 | * will free it. */ |
| 1868 | free_pending_request(req); |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 1869 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1870 | } else { |
| 1871 | DBGMSG("arm_get_buf request exceeded mapping"); |
| 1872 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1873 | return (-EINVAL); |
| 1874 | } |
| 1875 | } |
| 1876 | entry = entry->next; |
| 1877 | } |
| 1878 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1879 | return (-EINVAL); |
| 1880 | } |
| 1881 | |
| 1882 | /* Copy data from user buffer to ARM buffer(s). */ |
| 1883 | static int arm_set_buf(struct file_info *fi, struct pending_request *req) |
| 1884 | { |
| 1885 | struct arm_addr *arm_addr = NULL; |
| 1886 | unsigned long flags; |
| 1887 | unsigned long offset; |
| 1888 | |
| 1889 | struct list_head *entry; |
| 1890 | |
| 1891 | DBGMSG("arm_set_buf " |
| 1892 | "addr(Offset): %04X %08X length: %u", |
| 1893 | (u32) ((req->req.address >> 32) & 0xFFFF), |
| 1894 | (u32) (req->req.address & 0xFFFFFFFF), (u32) req->req.length); |
| 1895 | |
| 1896 | spin_lock_irqsave(&host_info_lock, flags); |
| 1897 | entry = fi->addr_list.next; |
| 1898 | while (entry != &(fi->addr_list)) { |
| 1899 | arm_addr = list_entry(entry, struct arm_addr, addr_list); |
| 1900 | if ((arm_addr->start <= req->req.address) && |
| 1901 | (arm_addr->end > req->req.address)) { |
| 1902 | if (req->req.address + req->req.length <= arm_addr->end) { |
| 1903 | offset = req->req.address - arm_addr->start; |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 1904 | spin_unlock_irqrestore(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1905 | |
| 1906 | DBGMSG |
| 1907 | ("arm_set_buf copy_from_user( %p, %08X, %u )", |
| 1908 | arm_addr->addr_space_buffer + offset, |
| 1909 | (u32) req->req.sendb, |
| 1910 | (u32) req->req.length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1911 | if (copy_from_user |
| 1912 | (arm_addr->addr_space_buffer + offset, |
| 1913 | int2ptr(req->req.sendb), |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 1914 | req->req.length)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1915 | return (-EFAULT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1916 | |
Stefan Richter | 3253b66 | 2006-09-14 22:05:16 +0200 | [diff] [blame] | 1917 | /* We have to free the request, because we |
| 1918 | * queue no response, and therefore nobody |
| 1919 | * will free it. */ |
| 1920 | free_pending_request(req); |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 1921 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1922 | } else { |
| 1923 | DBGMSG("arm_set_buf request exceeded mapping"); |
| 1924 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1925 | return (-EINVAL); |
| 1926 | } |
| 1927 | } |
| 1928 | entry = entry->next; |
| 1929 | } |
| 1930 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 1931 | return (-EINVAL); |
| 1932 | } |
| 1933 | |
| 1934 | static int reset_notification(struct file_info *fi, struct pending_request *req) |
| 1935 | { |
| 1936 | DBGMSG("reset_notification called - switch %s ", |
| 1937 | (req->req.misc == RAW1394_NOTIFY_OFF) ? "OFF" : "ON"); |
| 1938 | if ((req->req.misc == RAW1394_NOTIFY_OFF) || |
| 1939 | (req->req.misc == RAW1394_NOTIFY_ON)) { |
| 1940 | fi->notification = (u8) req->req.misc; |
| 1941 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 1942 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1943 | } |
| 1944 | /* error EINVAL (22) invalid argument */ |
| 1945 | return (-EINVAL); |
| 1946 | } |
| 1947 | |
| 1948 | static int write_phypacket(struct file_info *fi, struct pending_request *req) |
| 1949 | { |
| 1950 | struct hpsb_packet *packet = NULL; |
| 1951 | int retval = 0; |
| 1952 | quadlet_t data; |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1953 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1954 | |
| 1955 | data = be32_to_cpu((u32) req->req.sendb); |
| 1956 | DBGMSG("write_phypacket called - quadlet 0x%8.8x ", data); |
| 1957 | packet = hpsb_make_phypacket(fi->host, data); |
| 1958 | if (!packet) |
| 1959 | return -ENOMEM; |
| 1960 | req->req.length = 0; |
| 1961 | req->packet = packet; |
| 1962 | hpsb_set_packet_complete_task(packet, |
| 1963 | (void (*)(void *))queue_complete_cb, req); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1964 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1965 | list_add_tail(&req->list, &fi->req_pending); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 1966 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1967 | packet->generation = req->req.generation; |
| 1968 | retval = hpsb_send_packet(packet); |
| 1969 | DBGMSG("write_phypacket send_packet called => retval: %d ", retval); |
| 1970 | if (retval < 0) { |
| 1971 | req->req.error = RAW1394_ERROR_SEND_ERROR; |
| 1972 | req->req.length = 0; |
| 1973 | queue_complete_req(req); |
| 1974 | } |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 1975 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1976 | } |
| 1977 | |
| 1978 | static int get_config_rom(struct file_info *fi, struct pending_request *req) |
| 1979 | { |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 1980 | int ret = 0; |
Christoph Lameter | e94b176 | 2006-12-06 20:33:17 -0800 | [diff] [blame] | 1981 | quadlet_t *data = kmalloc(req->req.length, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1982 | int status; |
| 1983 | |
| 1984 | if (!data) |
| 1985 | return -ENOMEM; |
| 1986 | |
| 1987 | status = |
| 1988 | csr1212_read(fi->host->csr.rom, CSR1212_CONFIG_ROM_SPACE_OFFSET, |
| 1989 | data, req->req.length); |
| 1990 | if (copy_to_user(int2ptr(req->req.recvb), data, req->req.length)) |
| 1991 | ret = -EFAULT; |
| 1992 | if (copy_to_user |
| 1993 | (int2ptr(req->req.tag), &fi->host->csr.rom->cache_head->len, |
| 1994 | sizeof(fi->host->csr.rom->cache_head->len))) |
| 1995 | ret = -EFAULT; |
| 1996 | if (copy_to_user(int2ptr(req->req.address), &fi->host->csr.generation, |
| 1997 | sizeof(fi->host->csr.generation))) |
| 1998 | ret = -EFAULT; |
| 1999 | if (copy_to_user(int2ptr(req->req.sendb), &status, sizeof(status))) |
| 2000 | ret = -EFAULT; |
| 2001 | kfree(data); |
| 2002 | if (ret >= 0) { |
| 2003 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ |
| 2004 | } |
| 2005 | return ret; |
| 2006 | } |
| 2007 | |
| 2008 | static int update_config_rom(struct file_info *fi, struct pending_request *req) |
| 2009 | { |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 2010 | int ret = 0; |
Christoph Lameter | e94b176 | 2006-12-06 20:33:17 -0800 | [diff] [blame] | 2011 | quadlet_t *data = kmalloc(req->req.length, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2012 | if (!data) |
| 2013 | return -ENOMEM; |
| 2014 | if (copy_from_user(data, int2ptr(req->req.sendb), req->req.length)) { |
| 2015 | ret = -EFAULT; |
| 2016 | } else { |
| 2017 | int status = hpsb_update_config_rom(fi->host, |
| 2018 | data, req->req.length, |
| 2019 | (unsigned char)req->req. |
| 2020 | misc); |
| 2021 | if (copy_to_user |
| 2022 | (int2ptr(req->req.recvb), &status, sizeof(status))) |
| 2023 | ret = -ENOMEM; |
| 2024 | } |
| 2025 | kfree(data); |
| 2026 | if (ret >= 0) { |
| 2027 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ |
| 2028 | fi->cfgrom_upd = 1; |
| 2029 | } |
| 2030 | return ret; |
| 2031 | } |
| 2032 | |
| 2033 | static int modify_config_rom(struct file_info *fi, struct pending_request *req) |
| 2034 | { |
| 2035 | struct csr1212_keyval *kv; |
| 2036 | struct csr1212_csr_rom_cache *cache; |
| 2037 | struct csr1212_dentry *dentry; |
| 2038 | u32 dr; |
| 2039 | int ret = 0; |
| 2040 | |
| 2041 | if (req->req.misc == ~0) { |
| 2042 | if (req->req.length == 0) |
| 2043 | return -EINVAL; |
| 2044 | |
| 2045 | /* Find an unused slot */ |
| 2046 | for (dr = 0; |
| 2047 | dr < RAW1394_MAX_USER_CSR_DIRS && fi->csr1212_dirs[dr]; |
| 2048 | dr++) ; |
| 2049 | |
| 2050 | if (dr == RAW1394_MAX_USER_CSR_DIRS) |
| 2051 | return -ENOMEM; |
| 2052 | |
| 2053 | fi->csr1212_dirs[dr] = |
| 2054 | csr1212_new_directory(CSR1212_KV_ID_VENDOR); |
| 2055 | if (!fi->csr1212_dirs[dr]) |
| 2056 | return -ENOMEM; |
| 2057 | } else { |
| 2058 | dr = req->req.misc; |
| 2059 | if (!fi->csr1212_dirs[dr]) |
| 2060 | return -EINVAL; |
| 2061 | |
| 2062 | /* Delete old stuff */ |
| 2063 | for (dentry = |
| 2064 | fi->csr1212_dirs[dr]->value.directory.dentries_head; |
| 2065 | dentry; dentry = dentry->next) { |
| 2066 | csr1212_detach_keyval_from_directory(fi->host->csr.rom-> |
| 2067 | root_kv, |
| 2068 | dentry->kv); |
| 2069 | } |
| 2070 | |
| 2071 | if (req->req.length == 0) { |
| 2072 | csr1212_release_keyval(fi->csr1212_dirs[dr]); |
| 2073 | fi->csr1212_dirs[dr] = NULL; |
| 2074 | |
| 2075 | hpsb_update_config_rom_image(fi->host); |
| 2076 | free_pending_request(req); |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 2077 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2078 | } |
| 2079 | } |
| 2080 | |
| 2081 | cache = csr1212_rom_cache_malloc(0, req->req.length); |
| 2082 | if (!cache) { |
| 2083 | csr1212_release_keyval(fi->csr1212_dirs[dr]); |
| 2084 | fi->csr1212_dirs[dr] = NULL; |
| 2085 | return -ENOMEM; |
| 2086 | } |
| 2087 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 2088 | cache->filled_head = kmalloc(sizeof(*cache->filled_head), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2089 | if (!cache->filled_head) { |
| 2090 | csr1212_release_keyval(fi->csr1212_dirs[dr]); |
| 2091 | fi->csr1212_dirs[dr] = NULL; |
| 2092 | CSR1212_FREE(cache); |
| 2093 | return -ENOMEM; |
| 2094 | } |
| 2095 | cache->filled_tail = cache->filled_head; |
| 2096 | |
| 2097 | if (copy_from_user(cache->data, int2ptr(req->req.sendb), |
| 2098 | req->req.length)) { |
| 2099 | csr1212_release_keyval(fi->csr1212_dirs[dr]); |
| 2100 | fi->csr1212_dirs[dr] = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2101 | ret = -EFAULT; |
| 2102 | } else { |
| 2103 | cache->len = req->req.length; |
| 2104 | cache->filled_head->offset_start = 0; |
| 2105 | cache->filled_head->offset_end = cache->size - 1; |
| 2106 | |
| 2107 | cache->layout_head = cache->layout_tail = fi->csr1212_dirs[dr]; |
| 2108 | |
| 2109 | ret = CSR1212_SUCCESS; |
| 2110 | /* parse all the items */ |
| 2111 | for (kv = cache->layout_head; ret == CSR1212_SUCCESS && kv; |
| 2112 | kv = kv->next) { |
| 2113 | ret = csr1212_parse_keyval(kv, cache); |
| 2114 | } |
| 2115 | |
| 2116 | /* attach top level items to the root directory */ |
| 2117 | for (dentry = |
| 2118 | fi->csr1212_dirs[dr]->value.directory.dentries_head; |
| 2119 | ret == CSR1212_SUCCESS && dentry; dentry = dentry->next) { |
| 2120 | ret = |
| 2121 | csr1212_attach_keyval_to_directory(fi->host->csr. |
| 2122 | rom->root_kv, |
| 2123 | dentry->kv); |
| 2124 | } |
| 2125 | |
| 2126 | if (ret == CSR1212_SUCCESS) { |
| 2127 | ret = hpsb_update_config_rom_image(fi->host); |
| 2128 | |
| 2129 | if (ret >= 0 && copy_to_user(int2ptr(req->req.recvb), |
| 2130 | &dr, sizeof(dr))) { |
| 2131 | ret = -ENOMEM; |
| 2132 | } |
| 2133 | } |
| 2134 | } |
| 2135 | kfree(cache->filled_head); |
Stefan Richter | b12479d | 2005-11-21 17:32:18 -0500 | [diff] [blame] | 2136 | CSR1212_FREE(cache); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2137 | |
| 2138 | if (ret >= 0) { |
| 2139 | /* we have to free the request, because we queue no response, |
| 2140 | * and therefore nobody will free it */ |
| 2141 | free_pending_request(req); |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 2142 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2143 | } else { |
| 2144 | for (dentry = |
| 2145 | fi->csr1212_dirs[dr]->value.directory.dentries_head; |
| 2146 | dentry; dentry = dentry->next) { |
| 2147 | csr1212_detach_keyval_from_directory(fi->host->csr.rom-> |
| 2148 | root_kv, |
| 2149 | dentry->kv); |
| 2150 | } |
| 2151 | csr1212_release_keyval(fi->csr1212_dirs[dr]); |
| 2152 | fi->csr1212_dirs[dr] = NULL; |
| 2153 | return ret; |
| 2154 | } |
| 2155 | } |
| 2156 | |
| 2157 | static int state_connected(struct file_info *fi, struct pending_request *req) |
| 2158 | { |
| 2159 | int node = req->req.address >> 48; |
| 2160 | |
| 2161 | req->req.error = RAW1394_ERROR_NONE; |
| 2162 | |
| 2163 | switch (req->req.type) { |
| 2164 | |
| 2165 | case RAW1394_REQ_ECHO: |
| 2166 | queue_complete_req(req); |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 2167 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2168 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2169 | case RAW1394_REQ_ARM_REGISTER: |
| 2170 | return arm_register(fi, req); |
| 2171 | |
| 2172 | case RAW1394_REQ_ARM_UNREGISTER: |
| 2173 | return arm_unregister(fi, req); |
| 2174 | |
| 2175 | case RAW1394_REQ_ARM_SET_BUF: |
| 2176 | return arm_set_buf(fi, req); |
| 2177 | |
| 2178 | case RAW1394_REQ_ARM_GET_BUF: |
| 2179 | return arm_get_buf(fi, req); |
| 2180 | |
| 2181 | case RAW1394_REQ_RESET_NOTIFY: |
| 2182 | return reset_notification(fi, req); |
| 2183 | |
Stefan Richter | 53c96b4 | 2007-06-24 15:31:54 +0200 | [diff] [blame] | 2184 | case RAW1394_REQ_ISO_SEND: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2185 | case RAW1394_REQ_ISO_LISTEN: |
Stefan Richter | 53c96b4 | 2007-06-24 15:31:54 +0200 | [diff] [blame] | 2186 | printk(KERN_DEBUG "raw1394: old iso ABI has been removed\n"); |
| 2187 | req->req.error = RAW1394_ERROR_COMPAT; |
| 2188 | req->req.misc = RAW1394_KERNELAPI_VERSION; |
| 2189 | queue_complete_req(req); |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 2190 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2191 | |
| 2192 | case RAW1394_REQ_FCP_LISTEN: |
| 2193 | handle_fcp_listen(fi, req); |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 2194 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2195 | |
| 2196 | case RAW1394_REQ_RESET_BUS: |
| 2197 | if (req->req.misc == RAW1394_LONG_RESET) { |
| 2198 | DBGMSG("busreset called (type: LONG)"); |
| 2199 | hpsb_reset_bus(fi->host, LONG_RESET); |
| 2200 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 2201 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2202 | } |
| 2203 | if (req->req.misc == RAW1394_SHORT_RESET) { |
| 2204 | DBGMSG("busreset called (type: SHORT)"); |
| 2205 | hpsb_reset_bus(fi->host, SHORT_RESET); |
| 2206 | free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */ |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 2207 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2208 | } |
| 2209 | /* error EINVAL (22) invalid argument */ |
| 2210 | return (-EINVAL); |
| 2211 | case RAW1394_REQ_GET_ROM: |
| 2212 | return get_config_rom(fi, req); |
| 2213 | |
| 2214 | case RAW1394_REQ_UPDATE_ROM: |
| 2215 | return update_config_rom(fi, req); |
| 2216 | |
| 2217 | case RAW1394_REQ_MODIFY_ROM: |
| 2218 | return modify_config_rom(fi, req); |
| 2219 | } |
| 2220 | |
| 2221 | if (req->req.generation != get_hpsb_generation(fi->host)) { |
| 2222 | req->req.error = RAW1394_ERROR_GENERATION; |
| 2223 | req->req.generation = get_hpsb_generation(fi->host); |
| 2224 | req->req.length = 0; |
| 2225 | queue_complete_req(req); |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 2226 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2227 | } |
| 2228 | |
| 2229 | switch (req->req.type) { |
| 2230 | case RAW1394_REQ_PHYPACKET: |
| 2231 | return write_phypacket(fi, req); |
| 2232 | case RAW1394_REQ_ASYNC_SEND: |
| 2233 | return handle_async_send(fi, req); |
| 2234 | } |
| 2235 | |
| 2236 | if (req->req.length == 0) { |
| 2237 | req->req.error = RAW1394_ERROR_INVALID_ARG; |
| 2238 | queue_complete_req(req); |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 2239 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2240 | } |
| 2241 | |
| 2242 | return handle_async_request(fi, req, node); |
| 2243 | } |
| 2244 | |
| 2245 | static ssize_t raw1394_write(struct file *file, const char __user * buffer, |
| 2246 | size_t count, loff_t * offset_is_ignored) |
| 2247 | { |
| 2248 | struct file_info *fi = (struct file_info *)file->private_data; |
| 2249 | struct pending_request *req; |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 2250 | ssize_t retval = -EBADFD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2251 | |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 2252 | #ifdef CONFIG_COMPAT |
Ben Collins | 7597028 | 2006-06-12 18:12:10 -0400 | [diff] [blame] | 2253 | if (count == sizeof(struct compat_raw1394_req) && |
| 2254 | sizeof(struct compat_raw1394_req) != |
| 2255 | sizeof(struct raw1394_request)) { |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 2256 | buffer = raw1394_compat_write(buffer); |
Stefan Richter | 4216968 | 2009-02-15 22:49:24 +0100 | [diff] [blame] | 2257 | if (IS_ERR((__force void *)buffer)) |
| 2258 | return PTR_ERR((__force void *)buffer); |
Andi Kleen | 4bc32c4 | 2006-03-25 16:30:07 +0100 | [diff] [blame] | 2259 | } else |
| 2260 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2261 | if (count != sizeof(struct raw1394_request)) { |
| 2262 | return -EINVAL; |
| 2263 | } |
| 2264 | |
| 2265 | req = alloc_pending_request(); |
| 2266 | if (req == NULL) { |
| 2267 | return -ENOMEM; |
| 2268 | } |
| 2269 | req->file_info = fi; |
| 2270 | |
| 2271 | if (copy_from_user(&req->req, buffer, sizeof(struct raw1394_request))) { |
| 2272 | free_pending_request(req); |
| 2273 | return -EFAULT; |
| 2274 | } |
| 2275 | |
Michael Buesch | 64549e9 | 2009-07-19 21:40:39 +0200 | [diff] [blame] | 2276 | if (!mutex_trylock(&fi->state_mutex)) { |
| 2277 | free_pending_request(req); |
Stefan Richter | 638570b | 2008-10-26 12:03:37 +0100 | [diff] [blame] | 2278 | return -EAGAIN; |
Michael Buesch | 64549e9 | 2009-07-19 21:40:39 +0200 | [diff] [blame] | 2279 | } |
Stefan Richter | f22e52b | 2008-08-16 00:15:16 +0200 | [diff] [blame] | 2280 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2281 | switch (fi->state) { |
| 2282 | case opened: |
| 2283 | retval = state_opened(fi, req); |
| 2284 | break; |
| 2285 | |
| 2286 | case initialized: |
| 2287 | retval = state_initialized(fi, req); |
| 2288 | break; |
| 2289 | |
| 2290 | case connected: |
| 2291 | retval = state_connected(fi, req); |
| 2292 | break; |
| 2293 | } |
| 2294 | |
Stefan Richter | f22e52b | 2008-08-16 00:15:16 +0200 | [diff] [blame] | 2295 | mutex_unlock(&fi->state_mutex); |
| 2296 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2297 | if (retval < 0) { |
| 2298 | free_pending_request(req); |
Petr Vandrovec | 883b97e | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 2299 | } else { |
| 2300 | BUG_ON(retval); |
| 2301 | retval = count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2302 | } |
| 2303 | |
| 2304 | return retval; |
| 2305 | } |
| 2306 | |
| 2307 | /* rawiso operations */ |
| 2308 | |
| 2309 | /* check if any RAW1394_REQ_RAWISO_ACTIVITY event is already in the |
| 2310 | * completion queue (reqlists_lock must be taken) */ |
| 2311 | static inline int __rawiso_event_in_queue(struct file_info *fi) |
| 2312 | { |
| 2313 | struct pending_request *req; |
| 2314 | |
| 2315 | list_for_each_entry(req, &fi->req_complete, list) |
| 2316 | if (req->req.type == RAW1394_REQ_RAWISO_ACTIVITY) |
| 2317 | return 1; |
| 2318 | |
| 2319 | return 0; |
| 2320 | } |
| 2321 | |
| 2322 | /* put a RAWISO_ACTIVITY event in the queue, if one isn't there already */ |
| 2323 | static void queue_rawiso_event(struct file_info *fi) |
| 2324 | { |
| 2325 | unsigned long flags; |
| 2326 | |
| 2327 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
| 2328 | |
| 2329 | /* only one ISO activity event may be in the queue */ |
| 2330 | if (!__rawiso_event_in_queue(fi)) { |
| 2331 | struct pending_request *req = |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame] | 2332 | __alloc_pending_request(GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2333 | |
| 2334 | if (req) { |
| 2335 | req->file_info = fi; |
| 2336 | req->req.type = RAW1394_REQ_RAWISO_ACTIVITY; |
| 2337 | req->req.generation = get_hpsb_generation(fi->host); |
| 2338 | __queue_complete_req(req); |
| 2339 | } else { |
| 2340 | /* on allocation failure, signal an overflow */ |
| 2341 | if (fi->iso_handle) { |
| 2342 | atomic_inc(&fi->iso_handle->overflows); |
| 2343 | } |
| 2344 | } |
| 2345 | } |
| 2346 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
| 2347 | } |
| 2348 | |
| 2349 | static void rawiso_activity_cb(struct hpsb_iso *iso) |
| 2350 | { |
| 2351 | unsigned long flags; |
| 2352 | struct host_info *hi; |
| 2353 | struct file_info *fi; |
| 2354 | |
| 2355 | spin_lock_irqsave(&host_info_lock, flags); |
| 2356 | hi = find_host_info(iso->host); |
| 2357 | |
| 2358 | if (hi != NULL) { |
| 2359 | list_for_each_entry(fi, &hi->file_info_list, list) { |
| 2360 | if (fi->iso_handle == iso) |
| 2361 | queue_rawiso_event(fi); |
| 2362 | } |
| 2363 | } |
| 2364 | |
| 2365 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 2366 | } |
| 2367 | |
| 2368 | /* helper function - gather all the kernel iso status bits for returning to user-space */ |
| 2369 | static void raw1394_iso_fill_status(struct hpsb_iso *iso, |
| 2370 | struct raw1394_iso_status *stat) |
| 2371 | { |
Pieter Palmers | cc9429b | 2008-03-19 22:10:59 +0100 | [diff] [blame] | 2372 | int overflows = atomic_read(&iso->overflows); |
| 2373 | int skips = atomic_read(&iso->skips); |
| 2374 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2375 | stat->config.data_buf_size = iso->buf_size; |
| 2376 | stat->config.buf_packets = iso->buf_packets; |
| 2377 | stat->config.channel = iso->channel; |
| 2378 | stat->config.speed = iso->speed; |
| 2379 | stat->config.irq_interval = iso->irq_interval; |
| 2380 | stat->n_packets = hpsb_iso_n_ready(iso); |
Pieter Palmers | cc9429b | 2008-03-19 22:10:59 +0100 | [diff] [blame] | 2381 | stat->overflows = ((skips & 0xFFFF) << 16) | ((overflows & 0xFFFF)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2382 | stat->xmit_cycle = iso->xmit_cycle; |
| 2383 | } |
| 2384 | |
| 2385 | static int raw1394_iso_xmit_init(struct file_info *fi, void __user * uaddr) |
| 2386 | { |
| 2387 | struct raw1394_iso_status stat; |
| 2388 | |
| 2389 | if (!fi->host) |
| 2390 | return -EINVAL; |
| 2391 | |
| 2392 | if (copy_from_user(&stat, uaddr, sizeof(stat))) |
| 2393 | return -EFAULT; |
| 2394 | |
| 2395 | fi->iso_handle = hpsb_iso_xmit_init(fi->host, |
| 2396 | stat.config.data_buf_size, |
| 2397 | stat.config.buf_packets, |
| 2398 | stat.config.channel, |
| 2399 | stat.config.speed, |
| 2400 | stat.config.irq_interval, |
| 2401 | rawiso_activity_cb); |
| 2402 | if (!fi->iso_handle) |
| 2403 | return -ENOMEM; |
| 2404 | |
| 2405 | fi->iso_state = RAW1394_ISO_XMIT; |
| 2406 | |
| 2407 | raw1394_iso_fill_status(fi->iso_handle, &stat); |
| 2408 | if (copy_to_user(uaddr, &stat, sizeof(stat))) |
| 2409 | return -EFAULT; |
| 2410 | |
| 2411 | /* queue an event to get things started */ |
| 2412 | rawiso_activity_cb(fi->iso_handle); |
| 2413 | |
| 2414 | return 0; |
| 2415 | } |
| 2416 | |
| 2417 | static int raw1394_iso_recv_init(struct file_info *fi, void __user * uaddr) |
| 2418 | { |
| 2419 | struct raw1394_iso_status stat; |
| 2420 | |
| 2421 | if (!fi->host) |
| 2422 | return -EINVAL; |
| 2423 | |
| 2424 | if (copy_from_user(&stat, uaddr, sizeof(stat))) |
| 2425 | return -EFAULT; |
| 2426 | |
| 2427 | fi->iso_handle = hpsb_iso_recv_init(fi->host, |
| 2428 | stat.config.data_buf_size, |
| 2429 | stat.config.buf_packets, |
| 2430 | stat.config.channel, |
| 2431 | stat.config.dma_mode, |
| 2432 | stat.config.irq_interval, |
| 2433 | rawiso_activity_cb); |
| 2434 | if (!fi->iso_handle) |
| 2435 | return -ENOMEM; |
| 2436 | |
| 2437 | fi->iso_state = RAW1394_ISO_RECV; |
| 2438 | |
| 2439 | raw1394_iso_fill_status(fi->iso_handle, &stat); |
| 2440 | if (copy_to_user(uaddr, &stat, sizeof(stat))) |
| 2441 | return -EFAULT; |
| 2442 | return 0; |
| 2443 | } |
| 2444 | |
| 2445 | static int raw1394_iso_get_status(struct file_info *fi, void __user * uaddr) |
| 2446 | { |
| 2447 | struct raw1394_iso_status stat; |
| 2448 | struct hpsb_iso *iso = fi->iso_handle; |
| 2449 | |
| 2450 | raw1394_iso_fill_status(fi->iso_handle, &stat); |
| 2451 | if (copy_to_user(uaddr, &stat, sizeof(stat))) |
| 2452 | return -EFAULT; |
| 2453 | |
| 2454 | /* reset overflow counter */ |
| 2455 | atomic_set(&iso->overflows, 0); |
Pieter Palmers | cc9429b | 2008-03-19 22:10:59 +0100 | [diff] [blame] | 2456 | /* reset skip counter */ |
| 2457 | atomic_set(&iso->skips, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2458 | |
| 2459 | return 0; |
| 2460 | } |
| 2461 | |
| 2462 | /* copy N packet_infos out of the ringbuffer into user-supplied array */ |
| 2463 | static int raw1394_iso_recv_packets(struct file_info *fi, void __user * uaddr) |
| 2464 | { |
| 2465 | struct raw1394_iso_packets upackets; |
| 2466 | unsigned int packet = fi->iso_handle->first_packet; |
| 2467 | int i; |
| 2468 | |
| 2469 | if (copy_from_user(&upackets, uaddr, sizeof(upackets))) |
| 2470 | return -EFAULT; |
| 2471 | |
| 2472 | if (upackets.n_packets > hpsb_iso_n_ready(fi->iso_handle)) |
| 2473 | return -EINVAL; |
| 2474 | |
| 2475 | /* ensure user-supplied buffer is accessible and big enough */ |
| 2476 | if (!access_ok(VERIFY_WRITE, upackets.infos, |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 2477 | upackets.n_packets * |
| 2478 | sizeof(struct raw1394_iso_packet_info))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2479 | return -EFAULT; |
| 2480 | |
| 2481 | /* copy the packet_infos out */ |
| 2482 | for (i = 0; i < upackets.n_packets; i++) { |
| 2483 | if (__copy_to_user(&upackets.infos[i], |
| 2484 | &fi->iso_handle->infos[packet], |
| 2485 | sizeof(struct raw1394_iso_packet_info))) |
| 2486 | return -EFAULT; |
| 2487 | |
| 2488 | packet = (packet + 1) % fi->iso_handle->buf_packets; |
| 2489 | } |
| 2490 | |
| 2491 | return 0; |
| 2492 | } |
| 2493 | |
| 2494 | /* copy N packet_infos from user to ringbuffer, and queue them for transmission */ |
| 2495 | static int raw1394_iso_send_packets(struct file_info *fi, void __user * uaddr) |
| 2496 | { |
| 2497 | struct raw1394_iso_packets upackets; |
| 2498 | int i, rv; |
| 2499 | |
| 2500 | if (copy_from_user(&upackets, uaddr, sizeof(upackets))) |
| 2501 | return -EFAULT; |
| 2502 | |
Ben Collins | 1934b8b | 2005-07-09 20:01:23 -0400 | [diff] [blame] | 2503 | if (upackets.n_packets >= fi->iso_handle->buf_packets) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2504 | return -EINVAL; |
| 2505 | |
Ben Collins | 1934b8b | 2005-07-09 20:01:23 -0400 | [diff] [blame] | 2506 | if (upackets.n_packets >= hpsb_iso_n_ready(fi->iso_handle)) |
| 2507 | return -EAGAIN; |
| 2508 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2509 | /* ensure user-supplied buffer is accessible and big enough */ |
| 2510 | if (!access_ok(VERIFY_READ, upackets.infos, |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 2511 | upackets.n_packets * |
| 2512 | sizeof(struct raw1394_iso_packet_info))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2513 | return -EFAULT; |
| 2514 | |
| 2515 | /* copy the infos structs in and queue the packets */ |
| 2516 | for (i = 0; i < upackets.n_packets; i++) { |
| 2517 | struct raw1394_iso_packet_info info; |
| 2518 | |
| 2519 | if (__copy_from_user(&info, &upackets.infos[i], |
| 2520 | sizeof(struct raw1394_iso_packet_info))) |
| 2521 | return -EFAULT; |
| 2522 | |
| 2523 | rv = hpsb_iso_xmit_queue_packet(fi->iso_handle, info.offset, |
| 2524 | info.len, info.tag, info.sy); |
| 2525 | if (rv) |
| 2526 | return rv; |
| 2527 | } |
| 2528 | |
| 2529 | return 0; |
| 2530 | } |
| 2531 | |
| 2532 | static void raw1394_iso_shutdown(struct file_info *fi) |
| 2533 | { |
| 2534 | if (fi->iso_handle) |
| 2535 | hpsb_iso_shutdown(fi->iso_handle); |
| 2536 | |
| 2537 | fi->iso_handle = NULL; |
| 2538 | fi->iso_state = RAW1394_ISO_INACTIVE; |
| 2539 | } |
| 2540 | |
Pieter Palmers | 3dc5ea9 | 2007-02-03 17:44:39 +0100 | [diff] [blame] | 2541 | static int raw1394_read_cycle_timer(struct file_info *fi, void __user * uaddr) |
| 2542 | { |
| 2543 | struct raw1394_cycle_timer ct; |
| 2544 | int err; |
| 2545 | |
| 2546 | err = hpsb_read_cycle_timer(fi->host, &ct.cycle_timer, &ct.local_time); |
| 2547 | if (!err) |
| 2548 | if (copy_to_user(uaddr, &ct, sizeof(ct))) |
| 2549 | err = -EFAULT; |
| 2550 | return err; |
| 2551 | } |
| 2552 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2553 | /* mmap the rawiso xmit/recv buffer */ |
| 2554 | static int raw1394_mmap(struct file *file, struct vm_area_struct *vma) |
| 2555 | { |
| 2556 | struct file_info *fi = file->private_data; |
Stefan Richter | 10963ea | 2008-08-16 00:11:48 +0200 | [diff] [blame] | 2557 | int ret; |
| 2558 | |
Stefan Richter | 638570b | 2008-10-26 12:03:37 +0100 | [diff] [blame] | 2559 | if (!mutex_trylock(&fi->state_mutex)) |
| 2560 | return -EAGAIN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2561 | |
| 2562 | if (fi->iso_state == RAW1394_ISO_INACTIVE) |
Stefan Richter | 10963ea | 2008-08-16 00:11:48 +0200 | [diff] [blame] | 2563 | ret = -EINVAL; |
| 2564 | else |
| 2565 | ret = dma_region_mmap(&fi->iso_handle->data_buf, file, vma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2566 | |
Stefan Richter | 10963ea | 2008-08-16 00:11:48 +0200 | [diff] [blame] | 2567 | mutex_unlock(&fi->state_mutex); |
| 2568 | |
| 2569 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2570 | } |
| 2571 | |
Stefan Richter | ddfb908 | 2008-08-16 17:52:04 +0200 | [diff] [blame] | 2572 | static long raw1394_ioctl_inactive(struct file_info *fi, unsigned int cmd, |
| 2573 | void __user *argp) |
| 2574 | { |
| 2575 | switch (cmd) { |
| 2576 | case RAW1394_IOC_ISO_XMIT_INIT: |
| 2577 | return raw1394_iso_xmit_init(fi, argp); |
| 2578 | case RAW1394_IOC_ISO_RECV_INIT: |
| 2579 | return raw1394_iso_recv_init(fi, argp); |
| 2580 | default: |
| 2581 | return -EINVAL; |
| 2582 | } |
| 2583 | } |
| 2584 | |
| 2585 | static long raw1394_ioctl_recv(struct file_info *fi, unsigned int cmd, |
| 2586 | unsigned long arg) |
| 2587 | { |
| 2588 | void __user *argp = (void __user *)arg; |
| 2589 | |
| 2590 | switch (cmd) { |
| 2591 | case RAW1394_IOC_ISO_RECV_START:{ |
| 2592 | int args[3]; |
| 2593 | |
| 2594 | if (copy_from_user(&args[0], argp, sizeof(args))) |
| 2595 | return -EFAULT; |
| 2596 | return hpsb_iso_recv_start(fi->iso_handle, |
| 2597 | args[0], args[1], args[2]); |
| 2598 | } |
| 2599 | case RAW1394_IOC_ISO_XMIT_RECV_STOP: |
| 2600 | hpsb_iso_stop(fi->iso_handle); |
| 2601 | return 0; |
| 2602 | case RAW1394_IOC_ISO_RECV_LISTEN_CHANNEL: |
| 2603 | return hpsb_iso_recv_listen_channel(fi->iso_handle, arg); |
| 2604 | case RAW1394_IOC_ISO_RECV_UNLISTEN_CHANNEL: |
| 2605 | return hpsb_iso_recv_unlisten_channel(fi->iso_handle, arg); |
| 2606 | case RAW1394_IOC_ISO_RECV_SET_CHANNEL_MASK:{ |
| 2607 | u64 mask; |
| 2608 | |
| 2609 | if (copy_from_user(&mask, argp, sizeof(mask))) |
| 2610 | return -EFAULT; |
| 2611 | return hpsb_iso_recv_set_channel_mask(fi->iso_handle, |
| 2612 | mask); |
| 2613 | } |
| 2614 | case RAW1394_IOC_ISO_GET_STATUS: |
| 2615 | return raw1394_iso_get_status(fi, argp); |
| 2616 | case RAW1394_IOC_ISO_RECV_PACKETS: |
| 2617 | return raw1394_iso_recv_packets(fi, argp); |
| 2618 | case RAW1394_IOC_ISO_RECV_RELEASE_PACKETS: |
| 2619 | return hpsb_iso_recv_release_packets(fi->iso_handle, arg); |
| 2620 | case RAW1394_IOC_ISO_RECV_FLUSH: |
| 2621 | return hpsb_iso_recv_flush(fi->iso_handle); |
| 2622 | case RAW1394_IOC_ISO_SHUTDOWN: |
| 2623 | raw1394_iso_shutdown(fi); |
| 2624 | return 0; |
| 2625 | case RAW1394_IOC_ISO_QUEUE_ACTIVITY: |
| 2626 | queue_rawiso_event(fi); |
| 2627 | return 0; |
| 2628 | default: |
| 2629 | return -EINVAL; |
| 2630 | } |
| 2631 | } |
| 2632 | |
| 2633 | static long raw1394_ioctl_xmit(struct file_info *fi, unsigned int cmd, |
| 2634 | void __user *argp) |
| 2635 | { |
| 2636 | switch (cmd) { |
| 2637 | case RAW1394_IOC_ISO_XMIT_START:{ |
| 2638 | int args[2]; |
| 2639 | |
| 2640 | if (copy_from_user(&args[0], argp, sizeof(args))) |
| 2641 | return -EFAULT; |
| 2642 | return hpsb_iso_xmit_start(fi->iso_handle, |
| 2643 | args[0], args[1]); |
| 2644 | } |
| 2645 | case RAW1394_IOC_ISO_XMIT_SYNC: |
| 2646 | return hpsb_iso_xmit_sync(fi->iso_handle); |
| 2647 | case RAW1394_IOC_ISO_XMIT_RECV_STOP: |
| 2648 | hpsb_iso_stop(fi->iso_handle); |
| 2649 | return 0; |
| 2650 | case RAW1394_IOC_ISO_GET_STATUS: |
| 2651 | return raw1394_iso_get_status(fi, argp); |
| 2652 | case RAW1394_IOC_ISO_XMIT_PACKETS: |
| 2653 | return raw1394_iso_send_packets(fi, argp); |
| 2654 | case RAW1394_IOC_ISO_SHUTDOWN: |
| 2655 | raw1394_iso_shutdown(fi); |
| 2656 | return 0; |
| 2657 | case RAW1394_IOC_ISO_QUEUE_ACTIVITY: |
| 2658 | queue_rawiso_event(fi); |
| 2659 | return 0; |
| 2660 | default: |
| 2661 | return -EINVAL; |
| 2662 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2663 | } |
| 2664 | |
| 2665 | /* ioctl is only used for rawiso operations */ |
Stefan Richter | ddfb908 | 2008-08-16 17:52:04 +0200 | [diff] [blame] | 2666 | static long raw1394_ioctl(struct file *file, unsigned int cmd, |
| 2667 | unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2668 | { |
| 2669 | struct file_info *fi = file->private_data; |
| 2670 | void __user *argp = (void __user *)arg; |
Stefan Richter | ddfb908 | 2008-08-16 17:52:04 +0200 | [diff] [blame] | 2671 | long ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2672 | |
Pieter Palmers | 3dc5ea9 | 2007-02-03 17:44:39 +0100 | [diff] [blame] | 2673 | /* state-independent commands */ |
| 2674 | switch(cmd) { |
| 2675 | case RAW1394_IOC_GET_CYCLE_TIMER: |
| 2676 | return raw1394_read_cycle_timer(fi, argp); |
| 2677 | default: |
| 2678 | break; |
| 2679 | } |
| 2680 | |
Stefan Richter | 638570b | 2008-10-26 12:03:37 +0100 | [diff] [blame] | 2681 | if (!mutex_trylock(&fi->state_mutex)) |
| 2682 | return -EAGAIN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2683 | |
Stefan Richter | ddfb908 | 2008-08-16 17:52:04 +0200 | [diff] [blame] | 2684 | switch (fi->iso_state) { |
| 2685 | case RAW1394_ISO_INACTIVE: |
| 2686 | ret = raw1394_ioctl_inactive(fi, cmd, argp); |
| 2687 | break; |
| 2688 | case RAW1394_ISO_RECV: |
| 2689 | ret = raw1394_ioctl_recv(fi, cmd, arg); |
| 2690 | break; |
| 2691 | case RAW1394_ISO_XMIT: |
| 2692 | ret = raw1394_ioctl_xmit(fi, cmd, argp); |
| 2693 | break; |
| 2694 | default: |
| 2695 | ret = -EINVAL; |
| 2696 | break; |
| 2697 | } |
| 2698 | |
Stefan Richter | 10963ea | 2008-08-16 00:11:48 +0200 | [diff] [blame] | 2699 | mutex_unlock(&fi->state_mutex); |
Stefan Richter | ddfb908 | 2008-08-16 17:52:04 +0200 | [diff] [blame] | 2700 | |
Alan Cox | 3aea50a | 2008-05-23 11:57:41 +0100 | [diff] [blame] | 2701 | return ret; |
| 2702 | } |
| 2703 | |
Petr Vandrovec | 650c12c | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 2704 | #ifdef CONFIG_COMPAT |
| 2705 | struct raw1394_iso_packets32 { |
| 2706 | __u32 n_packets; |
| 2707 | compat_uptr_t infos; |
| 2708 | } __attribute__((packed)); |
| 2709 | |
| 2710 | struct raw1394_cycle_timer32 { |
| 2711 | __u32 cycle_timer; |
| 2712 | __u64 local_time; |
Stefan Richter | 19f00e6 | 2007-05-21 18:52:06 +0200 | [diff] [blame] | 2713 | } |
| 2714 | #if defined(CONFIG_X86_64) || defined(CONFIG_IA64) |
| 2715 | __attribute__((packed)) |
| 2716 | #endif |
| 2717 | ; |
Petr Vandrovec | 650c12c | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 2718 | |
| 2719 | #define RAW1394_IOC_ISO_RECV_PACKETS32 \ |
| 2720 | _IOW ('#', 0x25, struct raw1394_iso_packets32) |
| 2721 | #define RAW1394_IOC_ISO_XMIT_PACKETS32 \ |
| 2722 | _IOW ('#', 0x27, struct raw1394_iso_packets32) |
| 2723 | #define RAW1394_IOC_GET_CYCLE_TIMER32 \ |
| 2724 | _IOR ('#', 0x30, struct raw1394_cycle_timer32) |
| 2725 | |
| 2726 | static long raw1394_iso_xmit_recv_packets32(struct file *file, unsigned int cmd, |
| 2727 | struct raw1394_iso_packets32 __user *arg) |
| 2728 | { |
| 2729 | compat_uptr_t infos32; |
Al Viro | 5b26e64 | 2007-07-26 17:36:19 +0100 | [diff] [blame] | 2730 | void __user *infos; |
Petr Vandrovec | 650c12c | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 2731 | long err = -EFAULT; |
| 2732 | struct raw1394_iso_packets __user *dst = compat_alloc_user_space(sizeof(struct raw1394_iso_packets)); |
| 2733 | |
| 2734 | if (!copy_in_user(&dst->n_packets, &arg->n_packets, sizeof arg->n_packets) && |
| 2735 | !copy_from_user(&infos32, &arg->infos, sizeof infos32)) { |
| 2736 | infos = compat_ptr(infos32); |
| 2737 | if (!copy_to_user(&dst->infos, &infos, sizeof infos)) |
Stefan Richter | ddfb908 | 2008-08-16 17:52:04 +0200 | [diff] [blame] | 2738 | err = raw1394_ioctl(file, cmd, (unsigned long)dst); |
Petr Vandrovec | 650c12c | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 2739 | } |
| 2740 | return err; |
| 2741 | } |
| 2742 | |
| 2743 | static long raw1394_read_cycle_timer32(struct file_info *fi, void __user * uaddr) |
| 2744 | { |
| 2745 | struct raw1394_cycle_timer32 ct; |
| 2746 | int err; |
| 2747 | |
| 2748 | err = hpsb_read_cycle_timer(fi->host, &ct.cycle_timer, &ct.local_time); |
| 2749 | if (!err) |
| 2750 | if (copy_to_user(uaddr, &ct, sizeof(ct))) |
| 2751 | err = -EFAULT; |
| 2752 | return err; |
| 2753 | } |
| 2754 | |
| 2755 | static long raw1394_compat_ioctl(struct file *file, |
| 2756 | unsigned int cmd, unsigned long arg) |
| 2757 | { |
| 2758 | struct file_info *fi = file->private_data; |
| 2759 | void __user *argp = (void __user *)arg; |
| 2760 | long err; |
| 2761 | |
Petr Vandrovec | 650c12c | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 2762 | switch (cmd) { |
| 2763 | /* These requests have same format as long as 'int' has same size. */ |
| 2764 | case RAW1394_IOC_ISO_RECV_INIT: |
| 2765 | case RAW1394_IOC_ISO_RECV_START: |
| 2766 | case RAW1394_IOC_ISO_RECV_LISTEN_CHANNEL: |
| 2767 | case RAW1394_IOC_ISO_RECV_UNLISTEN_CHANNEL: |
| 2768 | case RAW1394_IOC_ISO_RECV_SET_CHANNEL_MASK: |
| 2769 | case RAW1394_IOC_ISO_RECV_RELEASE_PACKETS: |
| 2770 | case RAW1394_IOC_ISO_RECV_FLUSH: |
| 2771 | case RAW1394_IOC_ISO_XMIT_RECV_STOP: |
| 2772 | case RAW1394_IOC_ISO_XMIT_INIT: |
| 2773 | case RAW1394_IOC_ISO_XMIT_START: |
| 2774 | case RAW1394_IOC_ISO_XMIT_SYNC: |
| 2775 | case RAW1394_IOC_ISO_GET_STATUS: |
| 2776 | case RAW1394_IOC_ISO_SHUTDOWN: |
| 2777 | case RAW1394_IOC_ISO_QUEUE_ACTIVITY: |
Stefan Richter | ddfb908 | 2008-08-16 17:52:04 +0200 | [diff] [blame] | 2778 | err = raw1394_ioctl(file, cmd, arg); |
Petr Vandrovec | 650c12c | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 2779 | break; |
| 2780 | /* These request have different format. */ |
| 2781 | case RAW1394_IOC_ISO_RECV_PACKETS32: |
| 2782 | err = raw1394_iso_xmit_recv_packets32(file, RAW1394_IOC_ISO_RECV_PACKETS, argp); |
| 2783 | break; |
| 2784 | case RAW1394_IOC_ISO_XMIT_PACKETS32: |
| 2785 | err = raw1394_iso_xmit_recv_packets32(file, RAW1394_IOC_ISO_XMIT_PACKETS, argp); |
| 2786 | break; |
| 2787 | case RAW1394_IOC_GET_CYCLE_TIMER32: |
| 2788 | err = raw1394_read_cycle_timer32(fi, argp); |
| 2789 | break; |
| 2790 | default: |
| 2791 | err = -EINVAL; |
| 2792 | break; |
| 2793 | } |
Petr Vandrovec | 650c12c | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 2794 | |
| 2795 | return err; |
| 2796 | } |
| 2797 | #endif |
| 2798 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2799 | static unsigned int raw1394_poll(struct file *file, poll_table * pt) |
| 2800 | { |
| 2801 | struct file_info *fi = file->private_data; |
| 2802 | unsigned int mask = POLLOUT | POLLWRNORM; |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2803 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2804 | |
Stefan Richter | 45289bf | 2006-07-03 12:02:33 -0400 | [diff] [blame] | 2805 | poll_wait(file, &fi->wait_complete, pt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2806 | |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2807 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2808 | if (!list_empty(&fi->req_complete)) { |
| 2809 | mask |= POLLIN | POLLRDNORM; |
| 2810 | } |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2811 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2812 | |
| 2813 | return mask; |
| 2814 | } |
| 2815 | |
| 2816 | static int raw1394_open(struct inode *inode, struct file *file) |
| 2817 | { |
| 2818 | struct file_info *fi; |
| 2819 | |
Christoph Lameter | e94b176 | 2006-12-06 20:33:17 -0800 | [diff] [blame] | 2820 | fi = kzalloc(sizeof(*fi), GFP_KERNEL); |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 2821 | if (!fi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2822 | return -ENOMEM; |
| 2823 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2824 | fi->notification = (u8) RAW1394_NOTIFY_ON; /* busreset notification */ |
| 2825 | |
| 2826 | INIT_LIST_HEAD(&fi->list); |
Stefan Richter | 10963ea | 2008-08-16 00:11:48 +0200 | [diff] [blame] | 2827 | mutex_init(&fi->state_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2828 | fi->state = opened; |
| 2829 | INIT_LIST_HEAD(&fi->req_pending); |
| 2830 | INIT_LIST_HEAD(&fi->req_complete); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2831 | spin_lock_init(&fi->reqlists_lock); |
Stefan Richter | 45289bf | 2006-07-03 12:02:33 -0400 | [diff] [blame] | 2832 | init_waitqueue_head(&fi->wait_complete); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2833 | INIT_LIST_HEAD(&fi->addr_list); |
| 2834 | |
| 2835 | file->private_data = fi; |
| 2836 | |
| 2837 | return 0; |
| 2838 | } |
| 2839 | |
| 2840 | static int raw1394_release(struct inode *inode, struct file *file) |
| 2841 | { |
| 2842 | struct file_info *fi = file->private_data; |
| 2843 | struct list_head *lh; |
| 2844 | struct pending_request *req; |
Stefan Richter | 45289bf | 2006-07-03 12:02:33 -0400 | [diff] [blame] | 2845 | int i, fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2846 | int retval = 0; |
| 2847 | struct list_head *entry; |
| 2848 | struct arm_addr *addr = NULL; |
| 2849 | struct host_info *hi; |
| 2850 | struct file_info *fi_hlp = NULL; |
| 2851 | struct arm_addr *arm_addr = NULL; |
| 2852 | int another_host; |
| 2853 | int csr_mod = 0; |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2854 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2855 | |
| 2856 | if (fi->iso_state != RAW1394_ISO_INACTIVE) |
| 2857 | raw1394_iso_shutdown(fi); |
| 2858 | |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2859 | spin_lock_irqsave(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2860 | |
| 2861 | fail = 0; |
| 2862 | /* set address-entries invalid */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2863 | |
| 2864 | while (!list_empty(&fi->addr_list)) { |
| 2865 | another_host = 0; |
| 2866 | lh = fi->addr_list.next; |
| 2867 | addr = list_entry(lh, struct arm_addr, addr_list); |
| 2868 | /* another host with valid address-entry containing |
| 2869 | same addressrange? */ |
| 2870 | list_for_each_entry(hi, &host_info_list, list) { |
| 2871 | if (hi->host != fi->host) { |
| 2872 | list_for_each_entry(fi_hlp, &hi->file_info_list, |
| 2873 | list) { |
| 2874 | entry = fi_hlp->addr_list.next; |
| 2875 | while (entry != &(fi_hlp->addr_list)) { |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 2876 | arm_addr = list_entry(entry, struct |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2877 | arm_addr, |
| 2878 | addr_list); |
| 2879 | if (arm_addr->start == |
| 2880 | addr->start) { |
| 2881 | DBGMSG |
| 2882 | ("raw1394_release: " |
| 2883 | "another host ownes " |
| 2884 | "same addressrange"); |
| 2885 | another_host = 1; |
| 2886 | break; |
| 2887 | } |
| 2888 | entry = entry->next; |
| 2889 | } |
| 2890 | if (another_host) { |
| 2891 | break; |
| 2892 | } |
| 2893 | } |
| 2894 | } |
| 2895 | } |
| 2896 | if (!another_host) { |
| 2897 | DBGMSG("raw1394_release: call hpsb_arm_unregister"); |
| 2898 | retval = |
| 2899 | hpsb_unregister_addrspace(&raw1394_highlevel, |
| 2900 | fi->host, addr->start); |
| 2901 | if (!retval) { |
| 2902 | ++fail; |
| 2903 | printk(KERN_ERR |
| 2904 | "raw1394_release arm_Unregister failed\n"); |
| 2905 | } |
| 2906 | } |
| 2907 | DBGMSG("raw1394_release: delete addr_entry from list"); |
| 2908 | list_del(&addr->addr_list); |
| 2909 | vfree(addr->addr_space_buffer); |
| 2910 | kfree(addr); |
| 2911 | } /* while */ |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2912 | spin_unlock_irqrestore(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2913 | if (fail > 0) { |
| 2914 | printk(KERN_ERR "raw1394: during addr_list-release " |
| 2915 | "error(s) occurred \n"); |
| 2916 | } |
| 2917 | |
Stefan Richter | 45289bf | 2006-07-03 12:02:33 -0400 | [diff] [blame] | 2918 | for (;;) { |
| 2919 | /* This locked section guarantees that neither |
| 2920 | * complete nor pending requests exist once i!=0 */ |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2921 | spin_lock_irqsave(&fi->reqlists_lock, flags); |
Stefan Richter | 45289bf | 2006-07-03 12:02:33 -0400 | [diff] [blame] | 2922 | while ((req = __next_complete_req(fi))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2923 | free_pending_request(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2924 | |
Stefan Richter | 45289bf | 2006-07-03 12:02:33 -0400 | [diff] [blame] | 2925 | i = list_empty(&fi->req_pending); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2926 | spin_unlock_irqrestore(&fi->reqlists_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2927 | |
Stefan Richter | 45289bf | 2006-07-03 12:02:33 -0400 | [diff] [blame] | 2928 | if (i) |
| 2929 | break; |
| 2930 | /* |
| 2931 | * Sleep until more requests can be freed. |
| 2932 | * |
| 2933 | * NB: We call the macro wait_event() with a condition argument |
| 2934 | * with side effect. This is only possible because the side |
| 2935 | * effect does not occur until the condition became true, and |
| 2936 | * wait_event() won't evaluate the condition again after that. |
| 2937 | */ |
| 2938 | wait_event(fi->wait_complete, (req = next_complete_req(fi))); |
| 2939 | free_pending_request(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2940 | } |
| 2941 | |
| 2942 | /* Remove any sub-trees left by user space programs */ |
| 2943 | for (i = 0; i < RAW1394_MAX_USER_CSR_DIRS; i++) { |
| 2944 | struct csr1212_dentry *dentry; |
| 2945 | if (!fi->csr1212_dirs[i]) |
| 2946 | continue; |
| 2947 | for (dentry = |
| 2948 | fi->csr1212_dirs[i]->value.directory.dentries_head; dentry; |
| 2949 | dentry = dentry->next) { |
| 2950 | csr1212_detach_keyval_from_directory(fi->host->csr.rom-> |
| 2951 | root_kv, |
| 2952 | dentry->kv); |
| 2953 | } |
| 2954 | csr1212_release_keyval(fi->csr1212_dirs[i]); |
| 2955 | fi->csr1212_dirs[i] = NULL; |
| 2956 | csr_mod = 1; |
| 2957 | } |
| 2958 | |
| 2959 | if ((csr_mod || fi->cfgrom_upd) |
| 2960 | && hpsb_update_config_rom_image(fi->host) < 0) |
| 2961 | HPSB_ERR |
| 2962 | ("Failed to generate Configuration ROM image for host %d", |
| 2963 | fi->host->id); |
| 2964 | |
| 2965 | if (fi->state == connected) { |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2966 | spin_lock_irqsave(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2967 | list_del(&fi->list); |
Andy Wingo | 4a9949d | 2005-10-19 21:23:46 -0700 | [diff] [blame] | 2968 | spin_unlock_irqrestore(&host_info_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2969 | |
| 2970 | put_device(&fi->host->device); |
| 2971 | } |
| 2972 | |
Stefan Richter | 0fe4c6f | 2007-02-03 16:48:51 +0100 | [diff] [blame] | 2973 | spin_lock_irqsave(&host_info_lock, flags); |
| 2974 | if (fi->host) |
| 2975 | module_put(fi->host->driver->owner); |
| 2976 | spin_unlock_irqrestore(&host_info_lock, flags); |
| 2977 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2978 | kfree(fi); |
| 2979 | |
| 2980 | return 0; |
| 2981 | } |
| 2982 | |
| 2983 | /*** HOTPLUG STUFF **********************************************************/ |
| 2984 | /* |
| 2985 | * Export information about protocols/devices supported by this driver. |
| 2986 | */ |
Tony Breeds | e386497 | 2008-04-24 09:02:04 +0200 | [diff] [blame] | 2987 | #ifdef MODULE |
Stefan Richter | c640946 | 2009-02-15 23:11:38 +0100 | [diff] [blame] | 2988 | static const struct ieee1394_device_id raw1394_id_table[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2989 | { |
| 2990 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, |
| 2991 | .specifier_id = AVC_UNIT_SPEC_ID_ENTRY & 0xffffff, |
| 2992 | .version = AVC_SW_VERSION_ENTRY & 0xffffff}, |
| 2993 | { |
| 2994 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, |
| 2995 | .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, |
| 2996 | .version = CAMERA_SW_VERSION_ENTRY & 0xffffff}, |
| 2997 | { |
| 2998 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, |
| 2999 | .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, |
| 3000 | .version = (CAMERA_SW_VERSION_ENTRY + 1) & 0xffffff}, |
| 3001 | { |
| 3002 | .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, |
| 3003 | .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff, |
| 3004 | .version = (CAMERA_SW_VERSION_ENTRY + 2) & 0xffffff}, |
| 3005 | {} |
| 3006 | }; |
| 3007 | |
| 3008 | MODULE_DEVICE_TABLE(ieee1394, raw1394_id_table); |
Tony Breeds | e386497 | 2008-04-24 09:02:04 +0200 | [diff] [blame] | 3009 | #endif /* MODULE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3010 | |
| 3011 | static struct hpsb_protocol_driver raw1394_driver = { |
Ben Collins | ed30c26 | 2006-11-23 13:59:48 -0500 | [diff] [blame] | 3012 | .name = "raw1394", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3013 | }; |
| 3014 | |
| 3015 | /******************************************************************************/ |
| 3016 | |
| 3017 | static struct hpsb_highlevel raw1394_highlevel = { |
| 3018 | .name = RAW1394_DEVICE_NAME, |
| 3019 | .add_host = add_host, |
| 3020 | .remove_host = remove_host, |
| 3021 | .host_reset = host_reset, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3022 | .fcp_request = fcp_request, |
| 3023 | }; |
| 3024 | |
| 3025 | static struct cdev raw1394_cdev; |
Arjan van de Ven | 2b8693c | 2007-02-12 00:55:32 -0800 | [diff] [blame] | 3026 | static const struct file_operations raw1394_fops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3027 | .owner = THIS_MODULE, |
| 3028 | .read = raw1394_read, |
| 3029 | .write = raw1394_write, |
| 3030 | .mmap = raw1394_mmap, |
Alan Cox | 3aea50a | 2008-05-23 11:57:41 +0100 | [diff] [blame] | 3031 | .unlocked_ioctl = raw1394_ioctl, |
Petr Vandrovec | 650c12c | 2007-05-07 04:14:47 +0200 | [diff] [blame] | 3032 | #ifdef CONFIG_COMPAT |
| 3033 | .compat_ioctl = raw1394_compat_ioctl, |
| 3034 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3035 | .poll = raw1394_poll, |
| 3036 | .open = raw1394_open, |
| 3037 | .release = raw1394_release, |
| 3038 | }; |
| 3039 | |
| 3040 | static int __init init_raw1394(void) |
| 3041 | { |
| 3042 | int ret = 0; |
| 3043 | |
| 3044 | hpsb_register_highlevel(&raw1394_highlevel); |
| 3045 | |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 3046 | if (IS_ERR |
Greg Kroah-Hartman | 6229df3 | 2008-07-21 20:03:34 -0700 | [diff] [blame] | 3047 | (device_create(hpsb_protocol_class, NULL, |
| 3048 | MKDEV(IEEE1394_MAJOR, |
| 3049 | IEEE1394_MINOR_BLOCK_RAW1394 * 16), |
| 3050 | NULL, RAW1394_DEVICE_NAME))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3051 | ret = -EFAULT; |
| 3052 | goto out_unreg; |
| 3053 | } |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 3054 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3055 | cdev_init(&raw1394_cdev, &raw1394_fops); |
| 3056 | raw1394_cdev.owner = THIS_MODULE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3057 | ret = cdev_add(&raw1394_cdev, IEEE1394_RAW1394_DEV, 1); |
| 3058 | if (ret) { |
| 3059 | HPSB_ERR("raw1394 failed to register minor device block"); |
| 3060 | goto out_dev; |
| 3061 | } |
| 3062 | |
| 3063 | HPSB_INFO("raw1394: /dev/%s device initialized", RAW1394_DEVICE_NAME); |
| 3064 | |
| 3065 | ret = hpsb_register_protocol(&raw1394_driver); |
| 3066 | if (ret) { |
| 3067 | HPSB_ERR("raw1394: failed to register protocol"); |
| 3068 | cdev_del(&raw1394_cdev); |
| 3069 | goto out_dev; |
| 3070 | } |
| 3071 | |
| 3072 | goto out; |
| 3073 | |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 3074 | out_dev: |
Kay Sievers | dd7f292 | 2007-05-25 11:50:53 +0200 | [diff] [blame] | 3075 | device_destroy(hpsb_protocol_class, |
| 3076 | MKDEV(IEEE1394_MAJOR, |
| 3077 | IEEE1394_MINOR_BLOCK_RAW1394 * 16)); |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 3078 | out_unreg: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3079 | hpsb_unregister_highlevel(&raw1394_highlevel); |
Jens-Michael Hoffmann | c64d472 | 2005-11-22 12:37:10 -0500 | [diff] [blame] | 3080 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3081 | return ret; |
| 3082 | } |
| 3083 | |
| 3084 | static void __exit cleanup_raw1394(void) |
| 3085 | { |
Kay Sievers | dd7f292 | 2007-05-25 11:50:53 +0200 | [diff] [blame] | 3086 | device_destroy(hpsb_protocol_class, |
| 3087 | MKDEV(IEEE1394_MAJOR, |
| 3088 | IEEE1394_MINOR_BLOCK_RAW1394 * 16)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3089 | cdev_del(&raw1394_cdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3090 | hpsb_unregister_highlevel(&raw1394_highlevel); |
| 3091 | hpsb_unregister_protocol(&raw1394_driver); |
| 3092 | } |
| 3093 | |
| 3094 | module_init(init_raw1394); |
| 3095 | module_exit(cleanup_raw1394); |
| 3096 | MODULE_LICENSE("GPL"); |