| File: | obj-scan-build/../linux/pcmcia-cs/modules/bulkmem.c |
| Location: | line 72, column 5 |
| Description: | Value stored to 's' is never read |
| 1 | /*====================================================================== |
| 2 | |
| 3 | PCMCIA Bulk Memory Services |
| 4 | |
| 5 | bulkmem.c 1.44 2002/06/29 06:23:09 |
| 6 | |
| 7 | The contents of this file are subject to the Mozilla Public |
| 8 | License Version 1.1 (the "License"); you may not use this file |
| 9 | except in compliance with the License. You may obtain a copy of |
| 10 | the License at http://www.mozilla.org/MPL/ |
| 11 | |
| 12 | Software distributed under the License is distributed on an "AS |
| 13 | IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or |
| 14 | implied. See the License for the specific language governing |
| 15 | rights and limitations under the License. |
| 16 | |
| 17 | The initial developer of the original code is David A. Hinds |
| 18 | <dahinds@users.sourceforge.net>. Portions created by David A. Hinds |
| 19 | are Copyright (C) 1999 David A. Hinds. All Rights Reserved. |
| 20 | |
| 21 | Alternatively, the contents of this file may be used under the |
| 22 | terms of the GNU General Public License version 2 (the "GPL"), in |
| 23 | which case the provisions of the GPL are applicable instead of the |
| 24 | above. If you wish to allow the use of your version of this file |
| 25 | only under the terms of the GPL and not to allow others to use |
| 26 | your version of this file under the MPL, indicate your decision |
| 27 | by deleting the provisions above and replace them with the notice |
| 28 | and other provisions required by the GPL. If you do not delete |
| 29 | the provisions above, a recipient may use your version of this |
| 30 | file under either the MPL or the GPL. |
| 31 | |
| 32 | ======================================================================*/ |
| 33 | |
| 34 | #define __NO_VERSION__ |
| 35 | |
| 36 | #include <linux/module.h> |
| 37 | #include <linux/kernel.h> |
| 38 | #include <linux/string.h> |
| 39 | #include <linux/errno.h> |
| 40 | #include <linux/slab.h> |
| 41 | #include <linux/mm.h> |
| 42 | #include <linux/sched.h> |
| 43 | #include <linux/timer.h> |
| 44 | |
| 45 | #define IN_CARD_SERVICES |
| 46 | #include <pcmcia/cs_types.h> |
| 47 | #include <pcmcia/ss.h> |
| 48 | #include <pcmcia/cs.h> |
| 49 | #include <pcmcia/bulkmem.h> |
| 50 | #include <pcmcia/cistpl.h> |
| 51 | #include "cs_internal.h" |
| 52 | |
| 53 | /*====================================================================== |
| 54 | |
| 55 | This function handles submitting an MTD request, and retrying |
| 56 | requests when an MTD is busy. |
| 57 | |
| 58 | An MTD request should never block. |
| 59 | |
| 60 | ======================================================================*/ |
| 61 | |
| 62 | static int do_mtd_request(memory_handle_t handle, mtd_request_t *req, |
| 63 | caddr_t buf) |
| 64 | { |
| 65 | int ret, tries; |
| 66 | client_t *mtd; |
| 67 | socket_info_t *s; |
| 68 | |
| 69 | mtd = handle->mtd; |
| 70 | if (mtd == NULL((void *) 0)) |
| 71 | return CS_GENERAL_FAILURE0x19; |
| 72 | s = SOCKET(mtd)(socket_table[(mtd)->Socket]); |
Value stored to 's' is never read | |
| 73 | for (ret = tries = 0; tries < 100; tries++) { |
| 74 | mtd->event_callback_args.mtdrequest = req; |
| 75 | mtd->event_callback_args.buffer = buf; |
| 76 | ret = EVENT(mtd, CS_EVENT_MTD_REQUEST, CS_EVENT_PRI_LOW)((mtd)->event_handler((0x020000), (0), &(mtd)->event_callback_args )); |
| 77 | if (ret != CS_BUSY0x18) |
| 78 | break; |
| 79 | switch (req->Status) { |
| 80 | case MTD_WAITREQ0x00: |
| 81 | /* Not that we should ever need this... */ |
| 82 | interruptible_sleep_on_timeout(&mtd->mtd_req, HZ)interruptible_sleep_on(&mtd->mtd_req); |
| 83 | break; |
| 84 | case MTD_WAITTIMER0x01: |
| 85 | case MTD_WAITRDY0x02: |
| 86 | interruptible_sleep_on_timeout(&mtd->mtd_req,interruptible_sleep_on(&mtd->mtd_req) |
| 87 | req->Timeout*HZ/1000)interruptible_sleep_on(&mtd->mtd_req); |
| 88 | req->Function |= MTD_REQ_TIMEOUT0x020; |
| 89 | break; |
| 90 | case MTD_WAITPOWER0x03: |
| 91 | interruptible_sleep_on(&mtd->mtd_req); |
| 92 | break; |
| 93 | } |
| 94 | if (signal_pending(current)0) |
| 95 | printk(KERN_NOTICE"<5>" "cs: do_mtd_request interrupted!\n"); |
| 96 | } |
| 97 | if (tries == 20) { |
| 98 | printk(KERN_NOTICE"<5>" "cs: MTD request timed out!\n"); |
| 99 | ret = CS_GENERAL_FAILURE0x19; |
| 100 | } |
| 101 | wake_up_interruptiblewake_up(&mtd->mtd_req); |
| 102 | retry_erase_list(&mtd->erase_busy, 0); |
| 103 | return ret; |
| 104 | } /* do_mtd_request */ |
| 105 | |
| 106 | /*====================================================================== |
| 107 | |
| 108 | This stuff is all for handling asynchronous erase requests. It |
| 109 | is complicated because all the retry stuff has to be dealt with |
| 110 | in timer interrupts or in the card status event handler. |
| 111 | |
| 112 | ======================================================================*/ |
| 113 | |
| 114 | static void insert_queue(erase_busy_t *head, erase_busy_t *entry) |
| 115 | { |
| 116 | DEBUG(2, "cs: adding 0x%p to queue 0x%p\n", entry, head)do { if (pc_debug>(2)) printk("<7>" "cs: adding 0x%p to queue 0x%p\n" , entry, head); } while (0); |
| 117 | entry->next = head; |
| 118 | entry->prev = head->prev; |
| 119 | head->prev->next = entry; |
| 120 | head->prev = entry; |
| 121 | } |
| 122 | |
| 123 | static void remove_queue(erase_busy_t *entry) |
| 124 | { |
| 125 | DEBUG(2, "cs: unqueueing 0x%p\n", entry)do { if (pc_debug>(2)) printk("<7>" "cs: unqueueing 0x%p\n" , entry); } while (0); |
| 126 | entry->next->prev = entry->prev; |
| 127 | entry->prev->next = entry->next; |
| 128 | } |
| 129 | |
| 130 | static void retry_erase(erase_busy_t *busy, u_int cause) |
| 131 | { |
| 132 | eraseq_entry_t *erase = busy->erase; |
| 133 | mtd_request_t req; |
| 134 | client_t *mtd; |
| 135 | socket_info_t *s; |
| 136 | int ret; |
| 137 | |
| 138 | DEBUG(2, "cs: trying erase request 0x%p...\n", busy)do { if (pc_debug>(2)) printk("<7>" "cs: trying erase request 0x%p...\n" , busy); } while (0); |
| 139 | if (busy->next) |
| 140 | remove_queue(busy); |
| 141 | req.Function = MTD_REQ_ERASE0x000 | cause; |
| 142 | req.TransferLength = erase->Size; |
| 143 | req.DestCardOffset = erase->Offset + erase->Handle->info.CardOffset; |
| 144 | req.MediaID = erase->Handle->MediaID; |
| 145 | mtd = erase->Handle->mtd; |
| 146 | s = SOCKET(mtd)(socket_table[(mtd)->Socket]); |
| 147 | mtd->event_callback_args.mtdrequest = &req; |
| 148 | ret = EVENT(mtd, CS_EVENT_MTD_REQUEST, CS_EVENT_PRI_LOW)((mtd)->event_handler((0x020000), (0), &(mtd)->event_callback_args )); |
| 149 | if (ret == CS_BUSY0x18) { |
| 150 | DEBUG(2, " Status = %d, requeueing.\n", req.Status)do { if (pc_debug>(2)) printk("<7>" " Status = %d, requeueing.\n" , req.Status); } while (0); |
| 151 | switch (req.Status) { |
| 152 | case MTD_WAITREQ0x00: |
| 153 | case MTD_WAITPOWER0x03: |
| 154 | insert_queue(&mtd->erase_busy, busy); |
| 155 | break; |
| 156 | case MTD_WAITTIMER0x01: |
| 157 | case MTD_WAITRDY0x02: |
| 158 | if (req.Status == MTD_WAITRDY0x02) |
| 159 | insert_queue(&s->erase_busy, busy); |
| 160 | mod_timer(&busy->timeout, jiffies + req.Timeout*HZ/1000)do { del_timer(&busy->timeout); (&busy->timeout )->expires = (jiffies + req.Timeout*100/1000); add_timer(& busy->timeout); } while (0); |
| 161 | break; |
| 162 | } |
| 163 | } else { |
| 164 | /* update erase queue status */ |
| 165 | DEBUG(2, " Ret = %d\n", ret)do { if (pc_debug>(2)) printk("<7>" " Ret = %d\n", ret ); } while (0); |
| 166 | switch (ret) { |
| 167 | case CS_SUCCESS0x00: |
| 168 | erase->State = ERASE_PASSED0xe0; break; |
| 169 | case CS_WRITE_PROTECTED0x1a: |
| 170 | erase->State = ERASE_MEDIA_WRPROT0x84; break; |
| 171 | case CS_BAD_OFFSET0x07: |
| 172 | erase->State = ERASE_BAD_OFFSET0xc1; break; |
| 173 | case CS_BAD_SIZE0x0a: |
| 174 | erase->State = ERASE_BAD_SIZE0xc6; break; |
| 175 | case CS_NO_CARD0x14: |
| 176 | erase->State = ERASE_BAD_SOCKET0xc3; break; |
| 177 | default: |
| 178 | erase->State = ERASE_FAILED0xe1; break; |
| 179 | } |
| 180 | busy->client->event_callback_args.info = erase; |
| 181 | EVENT(busy->client, CS_EVENT_ERASE_COMPLETE, CS_EVENT_PRI_LOW)((busy->client)->event_handler((0x040000), (0), &(busy ->client)->event_callback_args)); |
| 182 | kfreelinux_kfree(busy); |
| 183 | /* Resubmit anything waiting for a request to finish */ |
| 184 | wake_up_interruptiblewake_up(&mtd->mtd_req); |
| 185 | retry_erase_list(&mtd->erase_busy, 0); |
| 186 | } |
| 187 | } /* retry_erase */ |
| 188 | |
| 189 | void retry_erase_list(erase_busy_t *list, u_int cause) |
| 190 | { |
| 191 | erase_busy_t tmp = *list; |
| 192 | |
| 193 | DEBUG(2, "cs: rescanning erase queue list 0x%p\n", list)do { if (pc_debug>(2)) printk("<7>" "cs: rescanning erase queue list 0x%p\n" , list); } while (0); |
| 194 | if (list->next == list) |
| 195 | return; |
| 196 | /* First, truncate the original list */ |
| 197 | list->prev->next = &tmp; |
| 198 | list->next->prev = &tmp; |
| 199 | list->prev = list->next = list; |
| 200 | tmp.prev->next = &tmp; |
| 201 | tmp.next->prev = &tmp; |
| 202 | |
| 203 | /* Now, retry each request, in order. */ |
| 204 | while (tmp.next != &tmp) |
| 205 | retry_erase(tmp.next, cause); |
| 206 | } /* retry_erase_list */ |
| 207 | |
| 208 | static void handle_erase_timeout(u_long arg) |
| 209 | { |
| 210 | DEBUG(0, "cs: erase timeout for entry 0x%lx\n", arg)do { if (pc_debug>(0)) printk("<7>" "cs: erase timeout for entry 0x%lx\n" , arg); } while (0); |
| 211 | retry_erase((erase_busy_t *)arg, MTD_REQ_TIMEOUT0x020); |
| 212 | } |
| 213 | |
| 214 | static void setup_erase_request(client_handle_t handle, eraseq_entry_t *erase) |
| 215 | { |
| 216 | erase_busy_t *busy; |
| 217 | region_info_t *info; |
| 218 | |
| 219 | if (CHECK_REGION(erase->Handle)(((erase->Handle) == ((void *) 0)) || ((erase->Handle)-> region_magic != 0xE3C9))) |
| 220 | erase->State = ERASE_BAD_SOCKET0xc3; |
| 221 | else { |
| 222 | info = &erase->Handle->info; |
| 223 | if ((erase->Offset >= info->RegionSize) || |
| 224 | (erase->Offset & (info->BlockSize-1))) |
| 225 | erase->State = ERASE_BAD_OFFSET0xc1; |
| 226 | else if ((erase->Offset+erase->Size > info->RegionSize) || |
| 227 | (erase->Size & (info->BlockSize-1))) |
| 228 | erase->State = ERASE_BAD_SIZE0xc6; |
| 229 | else { |
| 230 | erase->State = 1; |
| 231 | busy = kmalloclinux_kmalloc(sizeof(erase_busy_t), GFP_KERNEL0x03); |
| 232 | busy->erase = erase; |
| 233 | busy->client = handle; |
| 234 | init_timer(&busy->timeout); |
| 235 | busy->timeout.data = (u_long)busy; |
| 236 | busy->timeout.function = &handle_erase_timeout; |
| 237 | busy->prev = busy->next = NULL((void *) 0); |
| 238 | retry_erase(busy, 0); |
| 239 | } |
| 240 | } |
| 241 | } /* setup_erase_request */ |
| 242 | |
| 243 | /*====================================================================== |
| 244 | |
| 245 | MTD helper functions |
| 246 | |
| 247 | ======================================================================*/ |
| 248 | |
| 249 | static int mtd_modify_window(window_handle_t win, mtd_mod_win_t *req) |
| 250 | { |
| 251 | if ((win == NULL((void *) 0)) || (win->magic != WINDOW_MAGIC0xB35C)) |
| 252 | return CS_BAD_HANDLE0x21; |
| 253 | win->ctl.flags = MAP_16BIT0x02 | MAP_ACTIVE0x01; |
| 254 | if (req->Attributes & WIN_USE_WAIT0x0100) |
| 255 | win->ctl.flags |= MAP_USE_WAIT0x40; |
| 256 | if (req->Attributes & WIN_MEMORY_TYPE0x0002) |
| 257 | win->ctl.flags |= MAP_ATTRIB0x20; |
| 258 | win->ctl.speed = req->AccessSpeed; |
| 259 | win->ctl.card_start = req->CardOffset; |
| 260 | win->sock->ss_entry(win->sock->sock, SS_SetMemMap, &win->ctl); |
| 261 | return CS_SUCCESS0x00; |
| 262 | } |
| 263 | |
| 264 | static int mtd_set_vpp(client_handle_t handle, mtd_vpp_req_t *req) |
| 265 | { |
| 266 | socket_info_t *s; |
| 267 | if (CHECK_HANDLE(handle)(((handle) == ((void *) 0)) || ((handle)->client_magic != 0x51E6 ))) |
| 268 | return CS_BAD_HANDLE0x21; |
| 269 | if (req->Vpp1 != req->Vpp2) |
| 270 | return CS_BAD_VPP0x0f; |
| 271 | s = SOCKET(handle)(socket_table[(handle)->Socket]); |
| 272 | s->socket.Vpp = req->Vpp1; |
| 273 | if (s->ss_entry(s->sock, SS_SetSocket, &s->socket)) |
| 274 | return CS_BAD_VPP0x0f; |
| 275 | return CS_SUCCESS0x00; |
| 276 | } |
| 277 | |
| 278 | static int mtd_rdy_mask(client_handle_t handle, mtd_rdy_req_t *req) |
| 279 | { |
| 280 | socket_info_t *s; |
| 281 | if (CHECK_HANDLE(handle)(((handle) == ((void *) 0)) || ((handle)->client_magic != 0x51E6 ))) |
| 282 | return CS_BAD_HANDLE0x21; |
| 283 | s = SOCKET(handle)(socket_table[(handle)->Socket]); |
| 284 | if (req->Mask & CS_EVENT_READY_CHANGE0x000040) |
| 285 | s->socket.csc_mask |= SS_READY0x0040; |
| 286 | else |
| 287 | s->socket.csc_mask &= ~SS_READY0x0040; |
| 288 | if (s->ss_entry(s->sock, SS_SetSocket, &s->socket)) |
| 289 | return CS_GENERAL_FAILURE0x19; |
| 290 | return CS_SUCCESS0x00; |
| 291 | } |
| 292 | |
| 293 | int MTDHelperEntry(int func, void *a1, void *a2) |
| 294 | { |
| 295 | switch (func) { |
| 296 | case MTDRequestWindow: |
| 297 | return CardServices(RequestWindow, a1, a2, NULL((void *) 0)); |
| 298 | case MTDReleaseWindow: |
| 299 | return CardServices(ReleaseWindow, a1, NULL((void *) 0), NULL((void *) 0)); |
| 300 | case MTDModifyWindow: |
| 301 | return mtd_modify_window(a1, a2); break; |
| 302 | case MTDSetVpp: |
| 303 | return mtd_set_vpp(a1, a2); break; |
| 304 | case MTDRDYMask: |
| 305 | return mtd_rdy_mask(a1, a2); break; |
| 306 | default: |
| 307 | return CS_UNSUPPORTED_FUNCTION0x15; break; |
| 308 | } |
| 309 | } /* MTDHelperEntry */ |
| 310 | |
| 311 | /*====================================================================== |
| 312 | |
| 313 | This stuff is used by Card Services to initialize the table of |
| 314 | region info used for subsequent calls to GetFirstRegion and |
| 315 | GetNextRegion. |
| 316 | |
| 317 | ======================================================================*/ |
| 318 | |
| 319 | static void setup_regions(client_handle_t handle, int attr, |
| 320 | memory_handle_t *list) |
| 321 | { |
| 322 | int i, code, has_jedec, has_geo; |
| 323 | u_int offset; |
| 324 | cistpl_device_t device; |
| 325 | cistpl_jedec_t jedec; |
| 326 | cistpl_device_geo_t geo; |
| 327 | memory_handle_t r; |
| 328 | |
| 329 | DEBUG(1, "cs: setup_regions(0x%p, %d, 0x%p)\n",do { if (pc_debug>(1)) printk("<7>" "cs: setup_regions(0x%p, %d, 0x%p)\n" , handle, attr, list); } while (0) |
| 330 | handle, attr, list)do { if (pc_debug>(1)) printk("<7>" "cs: setup_regions(0x%p, %d, 0x%p)\n" , handle, attr, list); } while (0); |
| 331 | |
| 332 | code = (attr) ? CISTPL_DEVICE_A0x17 : CISTPL_DEVICE0x01; |
| 333 | if (read_tuple(handle, code, &device) != CS_SUCCESS0x00) |
| 334 | return; |
| 335 | code = (attr) ? CISTPL_JEDEC_A0x19 : CISTPL_JEDEC_C0x18; |
| 336 | has_jedec = (read_tuple(handle, code, &jedec) == CS_SUCCESS0x00); |
| 337 | if (has_jedec && (device.ndev != jedec.nid)) { |
| 338 | #ifdef PCMCIA_DEBUG4 |
| 339 | printk(KERN_DEBUG"<7>" "cs: Device info does not match JEDEC info.\n"); |
| 340 | #endif |
| 341 | has_jedec = 0; |
| 342 | } |
| 343 | code = (attr) ? CISTPL_DEVICE_GEO_A0x1f : CISTPL_DEVICE_GEO0x1e; |
| 344 | has_geo = (read_tuple(handle, code, &geo) == CS_SUCCESS0x00); |
| 345 | if (has_geo && (device.ndev != geo.ngeo)) { |
| 346 | #ifdef PCMCIA_DEBUG4 |
| 347 | printk(KERN_DEBUG"<7>" "cs: Device info does not match geometry tuple.\n"); |
| 348 | #endif |
| 349 | has_geo = 0; |
| 350 | } |
| 351 | |
| 352 | offset = 0; |
| 353 | for (i = 0; i < device.ndev; i++) { |
| 354 | if ((device.dev[i].type != CISTPL_DTYPE_NULL0x00) && |
| 355 | (device.dev[i].size != 0)) { |
| 356 | r = kmalloclinux_kmalloc(sizeof(*r), GFP_KERNEL0x03); |
| 357 | r->region_magic = REGION_MAGIC0xE3C9; |
| 358 | r->state = 0; |
| 359 | r->dev_info[0] = '\0'; |
| 360 | r->mtd = NULL((void *) 0); |
| 361 | r->info.Attributes = (attr) ? REGION_TYPE_AM0x0001 : 0; |
| 362 | r->info.CardOffset = offset; |
| 363 | r->info.RegionSize = device.dev[i].size; |
| 364 | r->info.AccessSpeed = device.dev[i].speed; |
| 365 | if (has_jedec) { |
| 366 | r->info.JedecMfr = jedec.id[i].mfr; |
| 367 | r->info.JedecInfo = jedec.id[i].info; |
| 368 | } else |
| 369 | r->info.JedecMfr = r->info.JedecInfo = 0; |
| 370 | if (has_geo) { |
| 371 | r->info.BlockSize = geo.geo[i].buswidth * |
| 372 | geo.geo[i].erase_block * geo.geo[i].interleave; |
| 373 | r->info.PartMultiple = |
| 374 | r->info.BlockSize * geo.geo[i].partition; |
| 375 | } else |
| 376 | r->info.BlockSize = r->info.PartMultiple = 1; |
| 377 | r->info.next = *list; *list = r; |
| 378 | } |
| 379 | offset += device.dev[i].size; |
| 380 | } |
| 381 | } /* setup_regions */ |
| 382 | |
| 383 | /*====================================================================== |
| 384 | |
| 385 | This is tricky. When get_first_region() is called by Driver |
| 386 | Services, we initialize the region info table in the socket |
| 387 | structure. When it is called by an MTD, we can just scan the |
| 388 | table for matching entries. |
| 389 | |
| 390 | ======================================================================*/ |
| 391 | |
| 392 | static int match_region(client_handle_t handle, memory_handle_t list, |
| 393 | region_info_t *match) |
| 394 | { |
| 395 | while (list != NULL((void *) 0)) { |
| 396 | if (!(handle->Attributes & INFO_MTD_CLIENT0x04) || |
| 397 | (strcmp(handle->dev_info, list->dev_info) == 0)) { |
| 398 | *match = list->info; |
| 399 | return CS_SUCCESS0x00; |
| 400 | } |
| 401 | list = list->info.next; |
| 402 | } |
| 403 | return CS_NO_MORE_ITEMS0x1f; |
| 404 | } /* match_region */ |
| 405 | |
| 406 | int get_first_region(client_handle_t handle, region_info_t *rgn) |
| 407 | { |
| 408 | socket_info_t *s = SOCKET(handle)(socket_table[(handle)->Socket]); |
| 409 | if (CHECK_HANDLE(handle)(((handle) == ((void *) 0)) || ((handle)->client_magic != 0x51E6 ))) |
| 410 | return CS_BAD_HANDLE0x21; |
| 411 | |
| 412 | if ((handle->Attributes & INFO_MASTER_CLIENT0x01) && |
| 413 | (!(s->state & SOCKET_REGION_INFO0x4000))) { |
| 414 | setup_regions(handle, 0, &s->c_region); |
| 415 | setup_regions(handle, 1, &s->a_region); |
| 416 | s->state |= SOCKET_REGION_INFO0x4000; |
| 417 | } |
| 418 | |
| 419 | if (rgn->Attributes & REGION_TYPE_AM0x0001) |
| 420 | return match_region(handle, s->a_region, rgn); |
| 421 | else |
| 422 | return match_region(handle, s->c_region, rgn); |
| 423 | } /* get_first_region */ |
| 424 | |
| 425 | int get_next_region(client_handle_t handle, region_info_t *rgn) |
| 426 | { |
| 427 | if (CHECK_HANDLE(handle)(((handle) == ((void *) 0)) || ((handle)->client_magic != 0x51E6 ))) |
| 428 | return CS_BAD_HANDLE0x21; |
| 429 | return match_region(handle, rgn->next, rgn); |
| 430 | } /* get_next_region */ |
| 431 | |
| 432 | /*====================================================================== |
| 433 | |
| 434 | Connect an MTD with a memory region. |
| 435 | |
| 436 | ======================================================================*/ |
| 437 | |
| 438 | int register_mtd(client_handle_t handle, mtd_reg_t *reg) |
| 439 | { |
| 440 | memory_handle_t list; |
| 441 | socket_info_t *s; |
| 442 | |
| 443 | if (CHECK_HANDLE(handle)(((handle) == ((void *) 0)) || ((handle)->client_magic != 0x51E6 ))) |
| 444 | return CS_BAD_HANDLE0x21; |
| 445 | s = SOCKET(handle)(socket_table[(handle)->Socket]); |
| 446 | if (reg->Attributes & REGION_TYPE_AM0x0001) |
| 447 | list = s->a_region; |
| 448 | else |
| 449 | list = s->c_region; |
| 450 | DEBUG(1, "cs: register_mtd(0x%p, '%s', 0x%x)\n",do { if (pc_debug>(1)) printk("<7>" "cs: register_mtd(0x%p, '%s', 0x%x)\n" , handle, handle->dev_info, reg->Offset); } while (0) |
| 451 | handle, handle->dev_info, reg->Offset)do { if (pc_debug>(1)) printk("<7>" "cs: register_mtd(0x%p, '%s', 0x%x)\n" , handle, handle->dev_info, reg->Offset); } while (0); |
| 452 | while (list) { |
| 453 | if (list->info.CardOffset == reg->Offset) break; |
| 454 | list = list->info.next; |
| 455 | } |
| 456 | if (list && (list->mtd == NULL((void *) 0)) && |
| 457 | (strcmp(handle->dev_info, list->dev_info) == 0)) { |
| 458 | list->info.Attributes = reg->Attributes; |
| 459 | list->MediaID = reg->MediaID; |
| 460 | list->mtd = handle; |
| 461 | handle->mtd_count++; |
| 462 | return CS_SUCCESS0x00; |
| 463 | } else |
| 464 | return CS_BAD_OFFSET0x07; |
| 465 | } /* register_mtd */ |
| 466 | |
| 467 | /*====================================================================== |
| 468 | |
| 469 | Erase queue management functions |
| 470 | |
| 471 | ======================================================================*/ |
| 472 | |
| 473 | int register_erase_queue(client_handle_t *handle, eraseq_hdr_t *header) |
| 474 | { |
| 475 | eraseq_t *queue; |
| 476 | |
| 477 | if ((handle == NULL((void *) 0)) || CHECK_HANDLE(*handle)(((*handle) == ((void *) 0)) || ((*handle)->client_magic != 0x51E6))) |
| 478 | return CS_BAD_HANDLE0x21; |
| 479 | queue = kmalloclinux_kmalloc(sizeof(*queue), GFP_KERNEL0x03); |
| 480 | if (!queue) return CS_OUT_OF_RESOURCE0x20; |
| 481 | queue->eraseq_magic = ERASEQ_MAGIC0xFA67; |
| 482 | queue->handle = *handle; |
| 483 | queue->count = header->QueueEntryCnt; |
| 484 | queue->entry = header->QueueEntryArray; |
| 485 | *handle = (client_handle_t)queue; |
| 486 | return CS_SUCCESS0x00; |
| 487 | } /* register_erase_queue */ |
| 488 | |
| 489 | int deregister_erase_queue(eraseq_handle_t eraseq) |
| 490 | { |
| 491 | int i; |
| 492 | if (CHECK_ERASEQ(eraseq)(((eraseq) == ((void *) 0)) || ((eraseq)->eraseq_magic != 0xFA67 ))) |
| 493 | return CS_BAD_HANDLE0x21; |
| 494 | for (i = 0; i < eraseq->count; i++) |
| 495 | if (ERASE_IN_PROGRESS(eraseq->entry[i].State)(((eraseq->entry[i].State) > 0) && ((eraseq-> entry[i].State) < 0x80))) break; |
| 496 | if (i < eraseq->count) |
| 497 | return CS_BUSY0x18; |
| 498 | eraseq->eraseq_magic = 0; |
| 499 | kfreelinux_kfree(eraseq); |
| 500 | return CS_SUCCESS0x00; |
| 501 | } /* deregister_erase_queue */ |
| 502 | |
| 503 | int check_erase_queue(eraseq_handle_t eraseq) |
| 504 | { |
| 505 | int i; |
| 506 | if (CHECK_ERASEQ(eraseq)(((eraseq) == ((void *) 0)) || ((eraseq)->eraseq_magic != 0xFA67 ))) |
| 507 | return CS_BAD_HANDLE0x21; |
| 508 | for (i = 0; i < eraseq->count; i++) |
| 509 | if (eraseq->entry[i].State == ERASE_QUEUED0x00) |
| 510 | setup_erase_request(eraseq->handle, &eraseq->entry[i]); |
| 511 | return CS_SUCCESS0x00; |
| 512 | } /* check_erase_queue */ |
| 513 | |
| 514 | /*====================================================================== |
| 515 | |
| 516 | Look up the memory region matching the request, and return a |
| 517 | memory handle. |
| 518 | |
| 519 | ======================================================================*/ |
| 520 | |
| 521 | int open_memory(client_handle_t *handle, open_mem_t *open) |
| 522 | { |
| 523 | socket_info_t *s; |
| 524 | memory_handle_t region; |
| 525 | |
| 526 | if ((handle == NULL((void *) 0)) || CHECK_HANDLE(*handle)(((*handle) == ((void *) 0)) || ((*handle)->client_magic != 0x51E6))) |
| 527 | return CS_BAD_HANDLE0x21; |
| 528 | s = SOCKET(*handle)(socket_table[(*handle)->Socket]); |
| 529 | if (open->Attributes & MEMORY_TYPE_AM0x0001) |
| 530 | region = s->a_region; |
| 531 | else |
| 532 | region = s->c_region; |
| 533 | while (region) { |
| 534 | if (region->info.CardOffset == open->Offset) break; |
| 535 | region = region->info.next; |
| 536 | } |
| 537 | if (region && region->mtd) { |
| 538 | *handle = (client_handle_t)region; |
| 539 | DEBUG(1, "cs: open_memory(0x%p, 0x%x) = 0x%p\n",do { if (pc_debug>(1)) printk("<7>" "cs: open_memory(0x%p, 0x%x) = 0x%p\n" , handle, open->Offset, region); } while (0) |
| 540 | handle, open->Offset, region)do { if (pc_debug>(1)) printk("<7>" "cs: open_memory(0x%p, 0x%x) = 0x%p\n" , handle, open->Offset, region); } while (0); |
| 541 | return CS_SUCCESS0x00; |
| 542 | } else |
| 543 | return CS_BAD_OFFSET0x07; |
| 544 | } /* open_memory */ |
| 545 | |
| 546 | /*====================================================================== |
| 547 | |
| 548 | Close a memory handle from an earlier call to OpenMemory. |
| 549 | |
| 550 | For the moment, I don't think this needs to do anything. |
| 551 | |
| 552 | ======================================================================*/ |
| 553 | |
| 554 | int close_memory(memory_handle_t handle) |
| 555 | { |
| 556 | DEBUG(1, "cs: close_memory(0x%p)\n", handle)do { if (pc_debug>(1)) printk("<7>" "cs: close_memory(0x%p)\n" , handle); } while (0); |
| 557 | if (CHECK_REGION(handle)(((handle) == ((void *) 0)) || ((handle)->region_magic != 0xE3C9 ))) |
| 558 | return CS_BAD_HANDLE0x21; |
| 559 | return CS_SUCCESS0x00; |
| 560 | } /* close_memory */ |
| 561 | |
| 562 | /*====================================================================== |
| 563 | |
| 564 | Read from a memory device, using a handle previously returned |
| 565 | by a call to OpenMemory. |
| 566 | |
| 567 | ======================================================================*/ |
| 568 | |
| 569 | int read_memory(memory_handle_t handle, mem_op_t *req, caddr_t buf) |
| 570 | { |
| 571 | mtd_request_t mtd; |
| 572 | if (CHECK_REGION(handle)(((handle) == ((void *) 0)) || ((handle)->region_magic != 0xE3C9 ))) |
| 573 | return CS_BAD_HANDLE0x21; |
| 574 | if (req->Offset >= handle->info.RegionSize) |
| 575 | return CS_BAD_OFFSET0x07; |
| 576 | if (req->Offset+req->Count > handle->info.RegionSize) |
| 577 | return CS_BAD_SIZE0x0a; |
| 578 | |
| 579 | mtd.SrcCardOffset = req->Offset + handle->info.CardOffset; |
| 580 | mtd.TransferLength = req->Count; |
| 581 | mtd.MediaID = handle->MediaID; |
| 582 | mtd.Function = MTD_REQ_READ0x001; |
| 583 | if (req->Attributes & MEM_OP_BUFFER_KERNEL0x01) |
| 584 | mtd.Function |= MTD_REQ_KERNEL0x100; |
| 585 | return do_mtd_request(handle, &mtd, buf); |
| 586 | } /* read_memory */ |
| 587 | |
| 588 | /*====================================================================== |
| 589 | |
| 590 | Write to a memory device, using a handle previously returned by |
| 591 | a call to OpenMemory. |
| 592 | |
| 593 | ======================================================================*/ |
| 594 | |
| 595 | int write_memory(memory_handle_t handle, mem_op_t *req, caddr_t buf) |
| 596 | { |
| 597 | mtd_request_t mtd; |
| 598 | if (CHECK_REGION(handle)(((handle) == ((void *) 0)) || ((handle)->region_magic != 0xE3C9 ))) |
| 599 | return CS_BAD_HANDLE0x21; |
| 600 | if (req->Offset >= handle->info.RegionSize) |
| 601 | return CS_BAD_OFFSET0x07; |
| 602 | if (req->Offset+req->Count > handle->info.RegionSize) |
| 603 | return CS_BAD_SIZE0x0a; |
| 604 | |
| 605 | mtd.DestCardOffset = req->Offset + handle->info.CardOffset; |
| 606 | mtd.TransferLength = req->Count; |
| 607 | mtd.MediaID = handle->MediaID; |
| 608 | mtd.Function = MTD_REQ_WRITE0x002; |
| 609 | if (req->Attributes & MEM_OP_BUFFER_KERNEL0x01) |
| 610 | mtd.Function |= MTD_REQ_KERNEL0x100; |
| 611 | return do_mtd_request(handle, &mtd, buf); |
| 612 | } /* write_memory */ |
| 613 | |
| 614 | /*====================================================================== |
| 615 | |
| 616 | This isn't needed for anything I could think of. |
| 617 | |
| 618 | ======================================================================*/ |
| 619 | |
| 620 | int copy_memory(memory_handle_t handle, copy_op_t *req) |
| 621 | { |
| 622 | if (CHECK_REGION(handle)(((handle) == ((void *) 0)) || ((handle)->region_magic != 0xE3C9 ))) |
| 623 | return CS_BAD_HANDLE0x21; |
| 624 | return CS_UNSUPPORTED_FUNCTION0x15; |
| 625 | } |
| 626 |