/drivers/net/wireless/wl1251/cmd.c
C | 496 lines | 344 code | 103 blank | 49 comment | 40 complexity | 686c8fed451e8a996a1b0a0aff315804 MD5 | raw file
Possible License(s): LGPL-2.0, AGPL-1.0, GPL-2.0
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 */ 21int 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 56out: 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 */ 68int 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 */ 109int 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 135out: 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 */ 147int 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 168int 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 201out: 202 kfree(vbm); 203 return ret; 204} 205 206int 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 250out: 251 kfree(cmd); 252 return ret; 253} 254 255int 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 /* 281 * FIXME: disable temporarily all filters because after commit 282 * 9cef8737 "mac80211: fix managed mode BSSID handling" broke 283 * association. The filter logic needs to be implemented properly 284 * and once that is done, this hack can be removed. 285 */ 286 join->rx_config_options = 0; 287 join->rx_filter_options = WL1251_DEFAULT_RX_FILTER; 288 289 join->basic_rate_set = RATE_MASK_1MBPS | RATE_MASK_2MBPS | 290 RATE_MASK_5_5MBPS | RATE_MASK_11MBPS; 291 292 join->beacon_interval = beacon_interval; 293 join->dtim_interval = dtim_interval; 294 join->bss_type = bss_type; 295 join->channel = channel; 296 join->ctrl = JOIN_CMD_CTRL_TX_FLUSH; 297 298 ret = wl1251_cmd_send(wl, CMD_START_JOIN, join, sizeof(*join)); 299 if (ret < 0) { 300 wl1251_error("failed to initiate cmd join"); 301 goto out; 302 } 303 304out: 305 kfree(join); 306 return ret; 307} 308 309int wl1251_cmd_ps_mode(struct wl1251 *wl, u8 ps_mode) 310{ 311 struct wl1251_cmd_ps_params *ps_params = NULL; 312 int ret = 0; 313 314 wl1251_debug(DEBUG_CMD, "cmd set ps mode"); 315 316 ps_params = kzalloc(sizeof(*ps_params), GFP_KERNEL); 317 if (!ps_params) { 318 ret = -ENOMEM; 319 goto out; 320 } 321 322 ps_params->ps_mode = ps_mode; 323 ps_params->send_null_data = 1; 324 ps_params->retries = 5; 325 ps_params->hang_over_period = 128; 326 ps_params->null_data_rate = 1; /* 1 Mbps */ 327 328 ret = wl1251_cmd_send(wl, CMD_SET_PS_MODE, ps_params, 329 sizeof(*ps_params)); 330 if (ret < 0) { 331 wl1251_error("cmd set_ps_mode failed"); 332 goto out; 333 } 334 335out: 336 kfree(ps_params); 337 return ret; 338} 339 340int wl1251_cmd_read_memory(struct wl1251 *wl, u32 addr, void *answer, 341 size_t len) 342{ 343 struct cmd_read_write_memory *cmd; 344 int ret = 0; 345 346 wl1251_debug(DEBUG_CMD, "cmd read memory"); 347 348 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 349 if (!cmd) { 350 ret = -ENOMEM; 351 goto out; 352 } 353 354 WARN_ON(len > MAX_READ_SIZE); 355 len = min_t(size_t, len, MAX_READ_SIZE); 356 357 cmd->addr = addr; 358 cmd->size = len; 359 360 ret = wl1251_cmd_send(wl, CMD_READ_MEMORY, cmd, sizeof(*cmd)); 361 if (ret < 0) { 362 wl1251_error("read memory command failed: %d", ret); 363 goto out; 364 } 365 366 /* the read command got in, we can now read the answer */ 367 wl1251_mem_read(wl, wl->cmd_box_addr, cmd, sizeof(*cmd)); 368 369 if (cmd->header.status != CMD_STATUS_SUCCESS) 370 wl1251_error("error in read command result: %d", 371 cmd->header.status); 372 373 memcpy(answer, cmd->value, len); 374 375out: 376 kfree(cmd); 377 return ret; 378} 379 380int wl1251_cmd_template_set(struct wl1251 *wl, u16 cmd_id, 381 void *buf, size_t buf_len) 382{ 383 struct wl1251_cmd_packet_template *cmd; 384 size_t cmd_len; 385 int ret = 0; 386 387 wl1251_debug(DEBUG_CMD, "cmd template %d", cmd_id); 388 389 WARN_ON(buf_len > WL1251_MAX_TEMPLATE_SIZE); 390 buf_len = min_t(size_t, buf_len, WL1251_MAX_TEMPLATE_SIZE); 391 cmd_len = ALIGN(sizeof(*cmd) + buf_len, 4); 392 393 cmd = kzalloc(cmd_len, GFP_KERNEL); 394 if (!cmd) { 395 ret = -ENOMEM; 396 goto out; 397 } 398 399 cmd->size = cpu_to_le16(buf_len); 400 401 if (buf) 402 memcpy(cmd->data, buf, buf_len); 403 404 ret = wl1251_cmd_send(wl, cmd_id, cmd, cmd_len); 405 if (ret < 0) { 406 wl1251_warning("cmd set_template failed: %d", ret); 407 goto out; 408 } 409 410out: 411 kfree(cmd); 412 return ret; 413} 414 415int wl1251_cmd_scan(struct wl1251 *wl, u8 *ssid, size_t ssid_len, 416 struct ieee80211_channel *channels[], 417 unsigned int n_channels, unsigned int n_probes) 418{ 419 struct wl1251_cmd_scan *cmd; 420 int i, ret = 0; 421 422 wl1251_debug(DEBUG_CMD, "cmd scan"); 423 424 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 425 if (!cmd) 426 return -ENOMEM; 427 428 cmd->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD); 429 cmd->params.rx_filter_options = cpu_to_le32(CFG_RX_PRSP_EN | 430 CFG_RX_MGMT_EN | 431 CFG_RX_BCN_EN); 432 cmd->params.scan_options = 0; 433 cmd->params.num_channels = n_channels; 434 cmd->params.num_probe_requests = n_probes; 435 cmd->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */ 436 cmd->params.tid_trigger = 0; 437 438 for (i = 0; i < n_channels; i++) { 439 cmd->channels[i].min_duration = 440 cpu_to_le32(WL1251_SCAN_MIN_DURATION); 441 cmd->channels[i].max_duration = 442 cpu_to_le32(WL1251_SCAN_MAX_DURATION); 443 memset(&cmd->channels[i].bssid_lsb, 0xff, 4); 444 memset(&cmd->channels[i].bssid_msb, 0xff, 2); 445 cmd->channels[i].early_termination = 0; 446 cmd->channels[i].tx_power_att = 0; 447 cmd->channels[i].channel = channels[i]->hw_value; 448 } 449 450 cmd->params.ssid_len = ssid_len; 451 if (ssid) 452 memcpy(cmd->params.ssid, ssid, ssid_len); 453 454 ret = wl1251_cmd_send(wl, CMD_SCAN, cmd, sizeof(*cmd)); 455 if (ret < 0) { 456 wl1251_error("cmd scan failed: %d", ret); 457 goto out; 458 } 459 460 wl1251_mem_read(wl, wl->cmd_box_addr, cmd, sizeof(*cmd)); 461 462 if (cmd->header.status != CMD_STATUS_SUCCESS) { 463 wl1251_error("cmd scan status wasn't success: %d", 464 cmd->header.status); 465 ret = -EIO; 466 goto out; 467 } 468 469out: 470 kfree(cmd); 471 return ret; 472} 473 474int wl1251_cmd_trigger_scan_to(struct wl1251 *wl, u32 timeout) 475{ 476 struct wl1251_cmd_trigger_scan_to *cmd; 477 int ret; 478 479 wl1251_debug(DEBUG_CMD, "cmd trigger scan to"); 480 481 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 482 if (!cmd) 483 return -ENOMEM; 484 485 cmd->timeout = timeout; 486 487 ret = wl1251_cmd_send(wl, CMD_TRIGGER_SCAN_TO, cmd, sizeof(*cmd)); 488 if (ret < 0) { 489 wl1251_error("cmd trigger scan to failed: %d", ret); 490 goto out; 491 } 492 493out: 494 kfree(cmd); 495 return ret; 496}