1 #include "cmd.h" 2 3 #include <linux/module.h> 4 #include <linux/slab.h> 5 #include <linux/crc7.h> 6 7 #include "wl1251.h" 8 #include "reg.h" 9 #include "io.h" 10 #include "ps.h" 11 #include "acx.h" 12 13 /** 14 * send command to firmware 15 * 16 * @wl: wl struct 17 * @id: command id 18 * @buf: buffer containing the command, must work with dma 19 * @len: length of the buffer 20 */ 21 int wl1251_cmd_send(struct wl1251 *wl, u16 id, void *buf, size_t len) 22 { 23 struct wl1251_cmd_header *cmd; 24 unsigned long timeout; 25 u32 intr; 26 int ret = 0; 27 28 cmd = buf; 29 cmd->id = id; 30 cmd->status = 0; 31 32 WARN_ON(len % 4 != 0); 33 34 wl1251_mem_write(wl, wl->cmd_box_addr, buf, len); 35 36 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_CMD); 37 38 timeout = jiffies + msecs_to_jiffies(WL1251_COMMAND_TIMEOUT); 39 40 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR); 41 while (!(intr & WL1251_ACX_INTR_CMD_COMPLETE)) { 42 if (time_after(jiffies, timeout)) { 43 wl1251_error("command complete timeout"); 44 ret = -ETIMEDOUT; 45 goto out; 46 } 47 48 msleep(1); 49 50 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR); 51 } 52 53 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_ACK, 54 WL1251_ACX_INTR_CMD_COMPLETE); 55 56 out: 57 return ret; 58 } 59 60 /** 61 * send test command to firmware 62 * 63 * @wl: wl struct 64 * @buf: buffer containing the command, with all headers, must work with dma 65 * @len: length of the buffer 66 * @answer: is answer needed 67 */ 68 int wl1251_cmd_test(struct wl1251 *wl, void *buf, size_t buf_len, u8 answer) 69 { 70 int ret; 71 72 wl1251_debug(DEBUG_CMD, "cmd test"); 73 74 ret = wl1251_cmd_send(wl, CMD_TEST, buf, buf_len); 75 76 if (ret < 0) { 77 wl1251_warning("TEST command failed"); 78 return ret; 79 } 80 81 if (answer) { 82 struct wl1251_command *cmd_answer; 83 84 /* 85 * The test command got in, we can read the answer. 86 * The answer would be a wl1251_command, where the 87 * parameter array contains the actual answer. 88 */ 89 wl1251_mem_read(wl, wl->cmd_box_addr, buf, buf_len); 90 91 cmd_answer = buf; 92 93 if (cmd_answer->header.status != CMD_STATUS_SUCCESS) 94 wl1251_error("TEST command answer error: %d", 95 cmd_answer->header.status); 96 } 97 98 return 0; 99 } 100 101 /** 102 * read acx from firmware 103 * 104 * @wl: wl struct 105 * @id: acx id 106 * @buf: buffer for the response, including all headers, must work with dma 107 * @len: length of buf 108 */ 109 int wl1251_cmd_interrogate(struct wl1251 *wl, u16 id, void *buf, size_t len) 110 { 111 struct acx_header *acx = buf; 112 int ret; 113 114 wl1251_debug(DEBUG_CMD, "cmd interrogate"); 115 116 acx->id = id; 117 118 /* payload length, does not include any headers */ 119 acx->len = len - sizeof(*acx); 120 121 ret = wl1251_cmd_send(wl, CMD_INTERROGATE, acx, sizeof(*acx)); 122 if (ret < 0) { 123 wl1251_error("INTERROGATE command failed"); 124 goto out; 125 } 126 127 /* the interrogate command got in, we can read the answer */ 128 wl1251_mem_read(wl, wl->cmd_box_addr, buf, len); 129 130 acx = buf; 131 if (acx->cmd.status != CMD_STATUS_SUCCESS) 132 wl1251_error("INTERROGATE command error: %d", 133 acx->cmd.status); 134 135 out: 136 return ret; 137 } 138 139 /** 140 * write acx value to firmware 141 * 142 * @wl: wl struct 143 * @id: acx id 144 * @buf: buffer containing acx, including all headers, must work with dma 145 * @len: length of buf 146 */ 147 int wl1251_cmd_configure(struct wl1251 *wl, u16 id, void *buf, size_t len) 148 { 149 struct acx_header *acx = buf; 150 int ret; 151 152 wl1251_debug(DEBUG_CMD, "cmd configure"); 153 154 acx->id = id; 155 156 /* payload length, does not include any headers */ 157 acx->len = len - sizeof(*acx); 158 159 ret = wl1251_cmd_send(wl, CMD_CONFIGURE, acx, len); 160 if (ret < 0) { 161 wl1251_warning("CONFIGURE command NOK"); 162 return ret; 163 } 164 165 return 0; 166 } 167 168 int wl1251_cmd_vbm(struct wl1251 *wl, u8 identity, 169 void *bitmap, u16 bitmap_len, u8 bitmap_control) 170 { 171 struct wl1251_cmd_vbm_update *vbm; 172 int ret; 173 174 wl1251_debug(DEBUG_CMD, "cmd vbm"); 175 176 vbm = kzalloc(sizeof(*vbm), GFP_KERNEL); 177 if (!vbm) { 178 ret = -ENOMEM; 179 goto out; 180 } 181 182 /* Count and period will be filled by the target */ 183 vbm->tim.bitmap_ctrl = bitmap_control; 184 if (bitmap_len > PARTIAL_VBM_MAX) { 185 wl1251_warning("cmd vbm len is %d B, truncating to %d", 186 bitmap_len, PARTIAL_VBM_MAX); 187 bitmap_len = PARTIAL_VBM_MAX; 188 } 189 memcpy(vbm->tim.pvb_field, bitmap, bitmap_len); 190 vbm->tim.identity = identity; 191 vbm->tim.length = bitmap_len + 3; 192 193 vbm->len = cpu_to_le16(bitmap_len + 5); 194 195 ret = wl1251_cmd_send(wl, CMD_VBM, vbm, sizeof(*vbm)); 196 if (ret < 0) { 197 wl1251_error("VBM command failed"); 198 goto out; 199 } 200 201 out: 202 kfree(vbm); 203 return ret; 204 } 205 206 int wl1251_cmd_data_path(struct wl1251 *wl, u8 channel, bool enable) 207 { 208 struct cmd_enabledisable_path *cmd; 209 int ret; 210 u16 cmd_rx, cmd_tx; 211 212 wl1251_debug(DEBUG_CMD, "cmd data path"); 213 214 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 215 if (!cmd) { 216 ret = -ENOMEM; 217 goto out; 218 } 219 220 cmd->channel = channel; 221 222 if (enable) { 223 cmd_rx = CMD_ENABLE_RX; 224 cmd_tx = CMD_ENABLE_TX; 225 } else { 226 cmd_rx = CMD_DISABLE_RX; 227 cmd_tx = CMD_DISABLE_TX; 228 } 229 230 ret = wl1251_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd)); 231 if (ret < 0) { 232 wl1251_error("rx %s cmd for channel %d failed", 233 enable ? "start" : "stop", channel); 234 goto out; 235 } 236 237 wl1251_debug(DEBUG_BOOT, "rx %s cmd channel %d", 238 enable ? "start" : "stop", channel); 239 240 ret = wl1251_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd)); 241 if (ret < 0) { 242 wl1251_error("tx %s cmd for channel %d failed", 243 enable ? "start" : "stop", channel); 244 goto out; 245 } 246 247 wl1251_debug(DEBUG_BOOT, "tx %s cmd channel %d", 248 enable ? "start" : "stop", channel); 249 250 out: 251 kfree(cmd); 252 return ret; 253 } 254 255 int wl1251_cmd_join(struct wl1251 *wl, u8 bss_type, u8 channel, 256 u16 beacon_interval, u8 dtim_interval) 257 { 258 struct cmd_join *join; 259 int ret, i; 260 u8 *bssid; 261 262 join = kzalloc(sizeof(*join), GFP_KERNEL); 263 if (!join) { 264 ret = -ENOMEM; 265 goto out; 266 } 267 268 wl1251_debug(DEBUG_CMD, "cmd join%s ch %d %d/%d", 269 bss_type == BSS_TYPE_IBSS ? " ibss" : "", 270 channel, beacon_interval, dtim_interval); 271 272 /* Reverse order BSSID */ 273 bssid = (u8 *) &join->bssid_lsb; 274 for (i = 0; i < ETH_ALEN; i++) 275 bssid[i] = wl->bssid[ETH_ALEN - i - 1]; 276 277 join->rx_config_options = wl->rx_config; 278 join->rx_filter_options = wl->rx_filter; 279 280 join->basic_rate_set = RATE_MASK_1MBPS | RATE_MASK_2MBPS | 281 RATE_MASK_5_5MBPS | RATE_MASK_11MBPS; 282 283 join->beacon_interval = beacon_interval; 284 join->dtim_interval = dtim_interval; 285 join->bss_type = bss_type; 286 join->channel = channel; 287 join->ctrl = JOIN_CMD_CTRL_TX_FLUSH; 288 289 ret = wl1251_cmd_send(wl, CMD_START_JOIN, join, sizeof(*join)); 290 if (ret < 0) { 291 wl1251_error("failed to initiate cmd join"); 292 goto out; 293 } 294 295 out: 296 kfree(join); 297 return ret; 298 } 299 300 int wl1251_cmd_ps_mode(struct wl1251 *wl, u8 ps_mode) 301 { 302 struct wl1251_cmd_ps_params *ps_params = NULL; 303 int ret = 0; 304 305 wl1251_debug(DEBUG_CMD, "cmd set ps mode"); 306 307 ps_params = kzalloc(sizeof(*ps_params), GFP_KERNEL); 308 if (!ps_params) { 309 ret = -ENOMEM; 310 goto out; 311 } 312 313 ps_params->ps_mode = ps_mode; 314 ps_params->send_null_data = 1; 315 ps_params->retries = 5; 316 ps_params->hang_over_period = 128; 317 ps_params->null_data_rate = 1; /* 1 Mbps */ 318 319 ret = wl1251_cmd_send(wl, CMD_SET_PS_MODE, ps_params, 320 sizeof(*ps_params)); 321 if (ret < 0) { 322 wl1251_error("cmd set_ps_mode failed"); 323 goto out; 324 } 325 326 out: 327 kfree(ps_params); 328 return ret; 329 } 330 331 int wl1251_cmd_read_memory(struct wl1251 *wl, u32 addr, void *answer, 332 size_t len) 333 { 334 struct cmd_read_write_memory *cmd; 335 int ret = 0; 336 337 wl1251_debug(DEBUG_CMD, "cmd read memory"); 338 339 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 340 if (!cmd) { 341 ret = -ENOMEM; 342 goto out; 343 } 344 345 WARN_ON(len > MAX_READ_SIZE); 346 len = min_t(size_t, len, MAX_READ_SIZE); 347 348 cmd->addr = addr; 349 cmd->size = len; 350 351 ret = wl1251_cmd_send(wl, CMD_READ_MEMORY, cmd, sizeof(*cmd)); 352 if (ret < 0) { 353 wl1251_error("read memory command failed: %d", ret); 354 goto out; 355 } 356 357 /* the read command got in, we can now read the answer */ 358 wl1251_mem_read(wl, wl->cmd_box_addr, cmd, sizeof(*cmd)); 359 360 if (cmd->header.status != CMD_STATUS_SUCCESS) 361 wl1251_error("error in read command result: %d", 362 cmd->header.status); 363 364 memcpy(answer, cmd->value, len); 365 366 out: 367 kfree(cmd); 368 return ret; 369 } 370 371 int wl1251_cmd_template_set(struct wl1251 *wl, u16 cmd_id, 372 void *buf, size_t buf_len) 373 { 374 struct wl1251_cmd_packet_template *cmd; 375 size_t cmd_len; 376 int ret = 0; 377 378 wl1251_debug(DEBUG_CMD, "cmd template %d", cmd_id); 379 380 WARN_ON(buf_len > WL1251_MAX_TEMPLATE_SIZE); 381 buf_len = min_t(size_t, buf_len, WL1251_MAX_TEMPLATE_SIZE); 382 cmd_len = ALIGN(sizeof(*cmd) + buf_len, 4); 383 384 cmd = kzalloc(cmd_len, GFP_KERNEL); 385 if (!cmd) { 386 ret = -ENOMEM; 387 goto out; 388 } 389 390 cmd->size = cpu_to_le16(buf_len); 391 392 if (buf) 393 memcpy(cmd->data, buf, buf_len); 394 395 ret = wl1251_cmd_send(wl, cmd_id, cmd, cmd_len); 396 if (ret < 0) { 397 wl1251_warning("cmd set_template failed: %d", ret); 398 goto out; 399 } 400 401 out: 402 kfree(cmd); 403 return ret; 404 } 405 406 int wl1251_cmd_scan(struct wl1251 *wl, u8 *ssid, size_t ssid_len, 407 struct ieee80211_channel *channels[], 408 unsigned int n_channels, unsigned int n_probes) 409 { 410 struct wl1251_cmd_scan *cmd; 411 int i, ret = 0; 412 413 wl1251_debug(DEBUG_CMD, "cmd scan"); 414 415 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 416 if (!cmd) 417 return -ENOMEM; 418 419 cmd->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD); 420 cmd->params.rx_filter_options = cpu_to_le32(CFG_RX_PRSP_EN | 421 CFG_RX_MGMT_EN | 422 CFG_RX_BCN_EN); 423 cmd->params.scan_options = 0; 424 cmd->params.num_channels = n_channels; 425 cmd->params.num_probe_requests = n_probes; 426 cmd->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */ 427 cmd->params.tid_trigger = 0; 428 429 for (i = 0; i < n_channels; i++) { 430 cmd->channels[i].min_duration = 431 cpu_to_le32(WL1251_SCAN_MIN_DURATION); 432 cmd->channels[i].max_duration = 433 cpu_to_le32(WL1251_SCAN_MAX_DURATION); 434 memset(&cmd->channels[i].bssid_lsb, 0xff, 4); 435 memset(&cmd->channels[i].bssid_msb, 0xff, 2); 436 cmd->channels[i].early_termination = 0; 437 cmd->channels[i].tx_power_att = 0; 438 cmd->channels[i].channel = channels[i]->hw_value; 439 } 440 441 cmd->params.ssid_len = ssid_len; 442 if (ssid) 443 memcpy(cmd->params.ssid, ssid, ssid_len); 444 445 ret = wl1251_cmd_send(wl, CMD_SCAN, cmd, sizeof(*cmd)); 446 if (ret < 0) { 447 wl1251_error("cmd scan failed: %d", ret); 448 goto out; 449 } 450 451 wl1251_mem_read(wl, wl->cmd_box_addr, cmd, sizeof(*cmd)); 452 453 if (cmd->header.status != CMD_STATUS_SUCCESS) { 454 wl1251_error("cmd scan status wasn't success: %d", 455 cmd->header.status); 456 ret = -EIO; 457 goto out; 458 } 459 460 out: 461 kfree(cmd); 462 return ret; 463 } 464 465 int wl1251_cmd_trigger_scan_to(struct wl1251 *wl, u32 timeout) 466 { 467 struct wl1251_cmd_trigger_scan_to *cmd; 468 int ret; 469 470 wl1251_debug(DEBUG_CMD, "cmd trigger scan to"); 471 472 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 473 if (!cmd) 474 return -ENOMEM; 475 476 cmd->timeout = timeout; 477 478 ret = wl1251_cmd_send(wl, CMD_TRIGGER_SCAN_TO, cmd, sizeof(*cmd)); 479 if (ret < 0) { 480 wl1251_error("cmd trigger scan to failed: %d", ret); 481 goto out; 482 } 483 484 out: 485 kfree(cmd); 486 return ret; 487 } 488