| 1 | /* |
| 2 | * Marvell Wireless LAN device driver: SDIO specific handling |
| 3 | * |
| 4 | * Copyright (C) 2011-2014, Marvell International Ltd. |
| 5 | * |
| 6 | * This software file (the "File") is distributed by Marvell International |
| 7 | * Ltd. under the terms of the GNU General Public License Version 2, June 1991 |
| 8 | * (the "License"). You may use, redistribute and/or modify this File in |
| 9 | * accordance with the terms and conditions of the License, a copy of which |
| 10 | * is available by writing to the Free Software Foundation, Inc., |
| 11 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the |
| 12 | * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. |
| 13 | * |
| 14 | * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE |
| 15 | * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE |
| 16 | * ARE EXPRESSLY DISCLAIMED. The License provides additional details about |
| 17 | * this warranty disclaimer. |
| 18 | */ |
| 19 | |
| 20 | #include <linux/firmware.h> |
| 21 | |
| 22 | #include "decl.h" |
| 23 | #include "ioctl.h" |
| 24 | #include "util.h" |
| 25 | #include "fw.h" |
| 26 | #include "main.h" |
| 27 | #include "wmm.h" |
| 28 | #include "11n.h" |
| 29 | #include "sdio.h" |
| 30 | |
| 31 | |
| 32 | #define SDIO_VERSION "1.0" |
| 33 | |
| 34 | /* The mwifiex_sdio_remove() callback function is called when |
| 35 | * user removes this module from kernel space or ejects |
| 36 | * the card from the slot. The driver handles these 2 cases |
| 37 | * differently. |
| 38 | * If the user is removing the module, the few commands (FUNC_SHUTDOWN, |
| 39 | * HS_CANCEL etc.) are sent to the firmware. |
| 40 | * If the card is removed, there is no need to send these command. |
| 41 | * |
| 42 | * The variable 'user_rmmod' is used to distinguish these two |
| 43 | * scenarios. This flag is initialized as FALSE in case the card |
| 44 | * is removed, and will be set to TRUE for module removal when |
| 45 | * module_exit function is called. |
| 46 | */ |
| 47 | static u8 user_rmmod; |
| 48 | |
| 49 | static struct mwifiex_if_ops sdio_ops; |
| 50 | static unsigned long iface_work_flags; |
| 51 | |
| 52 | static struct semaphore add_remove_card_sem; |
| 53 | |
| 54 | static struct memory_type_mapping mem_type_mapping_tbl[] = { |
| 55 | {"ITCM", NULL, 0, 0xF0}, |
| 56 | {"DTCM", NULL, 0, 0xF1}, |
| 57 | {"SQRAM", NULL, 0, 0xF2}, |
| 58 | {"APU", NULL, 0, 0xF3}, |
| 59 | {"CIU", NULL, 0, 0xF4}, |
| 60 | {"ICU", NULL, 0, 0xF5}, |
| 61 | {"MAC", NULL, 0, 0xF6}, |
| 62 | {"EXT7", NULL, 0, 0xF7}, |
| 63 | {"EXT8", NULL, 0, 0xF8}, |
| 64 | {"EXT9", NULL, 0, 0xF9}, |
| 65 | {"EXT10", NULL, 0, 0xFA}, |
| 66 | {"EXT11", NULL, 0, 0xFB}, |
| 67 | {"EXT12", NULL, 0, 0xFC}, |
| 68 | {"EXT13", NULL, 0, 0xFD}, |
| 69 | {"EXTLAST", NULL, 0, 0xFE}, |
| 70 | }; |
| 71 | |
| 72 | /* |
| 73 | * SDIO probe. |
| 74 | * |
| 75 | * This function probes an mwifiex device and registers it. It allocates |
| 76 | * the card structure, enables SDIO function number and initiates the |
| 77 | * device registration and initialization procedure by adding a logical |
| 78 | * interface. |
| 79 | */ |
| 80 | static int |
| 81 | mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id) |
| 82 | { |
| 83 | int ret; |
| 84 | struct sdio_mmc_card *card = NULL; |
| 85 | |
| 86 | pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n", |
| 87 | func->vendor, func->device, func->class, func->num); |
| 88 | |
| 89 | card = kzalloc(sizeof(struct sdio_mmc_card), GFP_KERNEL); |
| 90 | if (!card) |
| 91 | return -ENOMEM; |
| 92 | |
| 93 | card->func = func; |
| 94 | |
| 95 | func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE; |
| 96 | |
| 97 | if (id->driver_data) { |
| 98 | struct mwifiex_sdio_device *data = (void *)id->driver_data; |
| 99 | |
| 100 | card->firmware = data->firmware; |
| 101 | card->reg = data->reg; |
| 102 | card->max_ports = data->max_ports; |
| 103 | card->mp_agg_pkt_limit = data->mp_agg_pkt_limit; |
| 104 | card->supports_sdio_new_mode = data->supports_sdio_new_mode; |
| 105 | card->has_control_mask = data->has_control_mask; |
| 106 | card->tx_buf_size = data->tx_buf_size; |
| 107 | card->mp_tx_agg_buf_size = data->mp_tx_agg_buf_size; |
| 108 | card->mp_rx_agg_buf_size = data->mp_rx_agg_buf_size; |
| 109 | card->can_dump_fw = data->can_dump_fw; |
| 110 | card->can_auto_tdls = data->can_auto_tdls; |
| 111 | card->can_ext_scan = data->can_ext_scan; |
| 112 | } |
| 113 | |
| 114 | sdio_claim_host(func); |
| 115 | ret = sdio_enable_func(func); |
| 116 | sdio_release_host(func); |
| 117 | |
| 118 | if (ret) { |
| 119 | pr_err("%s: failed to enable function\n", __func__); |
| 120 | kfree(card); |
| 121 | return -EIO; |
| 122 | } |
| 123 | |
| 124 | if (mwifiex_add_card(card, &add_remove_card_sem, &sdio_ops, |
| 125 | MWIFIEX_SDIO)) { |
| 126 | pr_err("%s: add card failed\n", __func__); |
| 127 | kfree(card); |
| 128 | sdio_claim_host(func); |
| 129 | ret = sdio_disable_func(func); |
| 130 | sdio_release_host(func); |
| 131 | ret = -1; |
| 132 | } |
| 133 | |
| 134 | return ret; |
| 135 | } |
| 136 | |
| 137 | /* |
| 138 | * SDIO resume. |
| 139 | * |
| 140 | * Kernel needs to suspend all functions separately. Therefore all |
| 141 | * registered functions must have drivers with suspend and resume |
| 142 | * methods. Failing that the kernel simply removes the whole card. |
| 143 | * |
| 144 | * If already not resumed, this function turns on the traffic and |
| 145 | * sends a host sleep cancel request to the firmware. |
| 146 | */ |
| 147 | static int mwifiex_sdio_resume(struct device *dev) |
| 148 | { |
| 149 | struct sdio_func *func = dev_to_sdio_func(dev); |
| 150 | struct sdio_mmc_card *card; |
| 151 | struct mwifiex_adapter *adapter; |
| 152 | mmc_pm_flag_t pm_flag = 0; |
| 153 | |
| 154 | if (func) { |
| 155 | pm_flag = sdio_get_host_pm_caps(func); |
| 156 | card = sdio_get_drvdata(func); |
| 157 | if (!card || !card->adapter) { |
| 158 | pr_err("resume: invalid card or adapter\n"); |
| 159 | return 0; |
| 160 | } |
| 161 | } else { |
| 162 | pr_err("resume: sdio_func is not specified\n"); |
| 163 | return 0; |
| 164 | } |
| 165 | |
| 166 | adapter = card->adapter; |
| 167 | |
| 168 | if (!adapter->is_suspended) { |
| 169 | mwifiex_dbg(adapter, WARN, |
| 170 | "device already resumed\n"); |
| 171 | return 0; |
| 172 | } |
| 173 | |
| 174 | adapter->is_suspended = false; |
| 175 | |
| 176 | /* Disable Host Sleep */ |
| 177 | mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA), |
| 178 | MWIFIEX_ASYNC_CMD); |
| 179 | |
| 180 | return 0; |
| 181 | } |
| 182 | |
| 183 | /* |
| 184 | * SDIO remove. |
| 185 | * |
| 186 | * This function removes the interface and frees up the card structure. |
| 187 | */ |
| 188 | static void |
| 189 | mwifiex_sdio_remove(struct sdio_func *func) |
| 190 | { |
| 191 | struct sdio_mmc_card *card; |
| 192 | struct mwifiex_adapter *adapter; |
| 193 | struct mwifiex_private *priv; |
| 194 | |
| 195 | card = sdio_get_drvdata(func); |
| 196 | if (!card) |
| 197 | return; |
| 198 | |
| 199 | adapter = card->adapter; |
| 200 | if (!adapter || !adapter->priv_num) |
| 201 | return; |
| 202 | |
| 203 | mwifiex_dbg(adapter, INFO, "info: SDIO func num=%d\n", func->num); |
| 204 | |
| 205 | if (user_rmmod) { |
| 206 | if (adapter->is_suspended) |
| 207 | mwifiex_sdio_resume(adapter->dev); |
| 208 | |
| 209 | mwifiex_deauthenticate_all(adapter); |
| 210 | |
| 211 | priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); |
| 212 | mwifiex_disable_auto_ds(priv); |
| 213 | mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN); |
| 214 | } |
| 215 | |
| 216 | mwifiex_remove_card(card->adapter, &add_remove_card_sem); |
| 217 | } |
| 218 | |
| 219 | /* |
| 220 | * SDIO suspend. |
| 221 | * |
| 222 | * Kernel needs to suspend all functions separately. Therefore all |
| 223 | * registered functions must have drivers with suspend and resume |
| 224 | * methods. Failing that the kernel simply removes the whole card. |
| 225 | * |
| 226 | * If already not suspended, this function allocates and sends a host |
| 227 | * sleep activate request to the firmware and turns off the traffic. |
| 228 | */ |
| 229 | static int mwifiex_sdio_suspend(struct device *dev) |
| 230 | { |
| 231 | struct sdio_func *func = dev_to_sdio_func(dev); |
| 232 | struct sdio_mmc_card *card; |
| 233 | struct mwifiex_adapter *adapter; |
| 234 | mmc_pm_flag_t pm_flag = 0; |
| 235 | int ret = 0; |
| 236 | |
| 237 | if (func) { |
| 238 | pm_flag = sdio_get_host_pm_caps(func); |
| 239 | pr_debug("cmd: %s: suspend: PM flag = 0x%x\n", |
| 240 | sdio_func_id(func), pm_flag); |
| 241 | if (!(pm_flag & MMC_PM_KEEP_POWER)) { |
| 242 | pr_err("%s: cannot remain alive while host is" |
| 243 | " suspended\n", sdio_func_id(func)); |
| 244 | return -ENOSYS; |
| 245 | } |
| 246 | |
| 247 | card = sdio_get_drvdata(func); |
| 248 | if (!card || !card->adapter) { |
| 249 | pr_err("suspend: invalid card or adapter\n"); |
| 250 | return 0; |
| 251 | } |
| 252 | } else { |
| 253 | pr_err("suspend: sdio_func is not specified\n"); |
| 254 | return 0; |
| 255 | } |
| 256 | |
| 257 | adapter = card->adapter; |
| 258 | |
| 259 | /* Enable the Host Sleep */ |
| 260 | if (!mwifiex_enable_hs(adapter)) { |
| 261 | mwifiex_dbg(adapter, ERROR, |
| 262 | "cmd: failed to suspend\n"); |
| 263 | adapter->hs_enabling = false; |
| 264 | return -EFAULT; |
| 265 | } |
| 266 | |
| 267 | mwifiex_dbg(adapter, INFO, |
| 268 | "cmd: suspend with MMC_PM_KEEP_POWER\n"); |
| 269 | ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); |
| 270 | |
| 271 | /* Indicate device suspended */ |
| 272 | adapter->is_suspended = true; |
| 273 | adapter->hs_enabling = false; |
| 274 | |
| 275 | return ret; |
| 276 | } |
| 277 | |
| 278 | /* Device ID for SD8786 */ |
| 279 | #define SDIO_DEVICE_ID_MARVELL_8786 (0x9116) |
| 280 | /* Device ID for SD8787 */ |
| 281 | #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119) |
| 282 | /* Device ID for SD8797 */ |
| 283 | #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129) |
| 284 | /* Device ID for SD8897 */ |
| 285 | #define SDIO_DEVICE_ID_MARVELL_8897 (0x912d) |
| 286 | /* Device ID for SD8887 */ |
| 287 | #define SDIO_DEVICE_ID_MARVELL_8887 (0x9135) |
| 288 | /* Device ID for SD8801 */ |
| 289 | #define SDIO_DEVICE_ID_MARVELL_8801 (0x9139) |
| 290 | |
| 291 | |
| 292 | /* WLAN IDs */ |
| 293 | static const struct sdio_device_id mwifiex_ids[] = { |
| 294 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8786), |
| 295 | .driver_data = (unsigned long) &mwifiex_sdio_sd8786}, |
| 296 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787), |
| 297 | .driver_data = (unsigned long) &mwifiex_sdio_sd8787}, |
| 298 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797), |
| 299 | .driver_data = (unsigned long) &mwifiex_sdio_sd8797}, |
| 300 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897), |
| 301 | .driver_data = (unsigned long) &mwifiex_sdio_sd8897}, |
| 302 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8887), |
| 303 | .driver_data = (unsigned long)&mwifiex_sdio_sd8887}, |
| 304 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8801), |
| 305 | .driver_data = (unsigned long)&mwifiex_sdio_sd8801}, |
| 306 | {}, |
| 307 | }; |
| 308 | |
| 309 | MODULE_DEVICE_TABLE(sdio, mwifiex_ids); |
| 310 | |
| 311 | static const struct dev_pm_ops mwifiex_sdio_pm_ops = { |
| 312 | .suspend = mwifiex_sdio_suspend, |
| 313 | .resume = mwifiex_sdio_resume, |
| 314 | }; |
| 315 | |
| 316 | static struct sdio_driver mwifiex_sdio = { |
| 317 | .name = "mwifiex_sdio", |
| 318 | .id_table = mwifiex_ids, |
| 319 | .probe = mwifiex_sdio_probe, |
| 320 | .remove = mwifiex_sdio_remove, |
| 321 | .drv = { |
| 322 | .owner = THIS_MODULE, |
| 323 | .pm = &mwifiex_sdio_pm_ops, |
| 324 | } |
| 325 | }; |
| 326 | |
| 327 | /* Write data into SDIO card register. Caller claims SDIO device. */ |
| 328 | static int |
| 329 | mwifiex_write_reg_locked(struct sdio_func *func, u32 reg, u8 data) |
| 330 | { |
| 331 | int ret = -1; |
| 332 | sdio_writeb(func, data, reg, &ret); |
| 333 | return ret; |
| 334 | } |
| 335 | |
| 336 | /* |
| 337 | * This function writes data into SDIO card register. |
| 338 | */ |
| 339 | static int |
| 340 | mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u8 data) |
| 341 | { |
| 342 | struct sdio_mmc_card *card = adapter->card; |
| 343 | int ret; |
| 344 | |
| 345 | sdio_claim_host(card->func); |
| 346 | ret = mwifiex_write_reg_locked(card->func, reg, data); |
| 347 | sdio_release_host(card->func); |
| 348 | |
| 349 | return ret; |
| 350 | } |
| 351 | |
| 352 | /* |
| 353 | * This function reads data from SDIO card register. |
| 354 | */ |
| 355 | static int |
| 356 | mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u8 *data) |
| 357 | { |
| 358 | struct sdio_mmc_card *card = adapter->card; |
| 359 | int ret = -1; |
| 360 | u8 val; |
| 361 | |
| 362 | sdio_claim_host(card->func); |
| 363 | val = sdio_readb(card->func, reg, &ret); |
| 364 | sdio_release_host(card->func); |
| 365 | |
| 366 | *data = val; |
| 367 | |
| 368 | return ret; |
| 369 | } |
| 370 | |
| 371 | /* |
| 372 | * This function writes multiple data into SDIO card memory. |
| 373 | * |
| 374 | * This does not work in suspended mode. |
| 375 | */ |
| 376 | static int |
| 377 | mwifiex_write_data_sync(struct mwifiex_adapter *adapter, |
| 378 | u8 *buffer, u32 pkt_len, u32 port) |
| 379 | { |
| 380 | struct sdio_mmc_card *card = adapter->card; |
| 381 | int ret; |
| 382 | u8 blk_mode = |
| 383 | (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE; |
| 384 | u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; |
| 385 | u32 blk_cnt = |
| 386 | (blk_mode == |
| 387 | BLOCK_MODE) ? (pkt_len / |
| 388 | MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len; |
| 389 | u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); |
| 390 | |
| 391 | if (adapter->is_suspended) { |
| 392 | mwifiex_dbg(adapter, ERROR, |
| 393 | "%s: not allowed while suspended\n", __func__); |
| 394 | return -1; |
| 395 | } |
| 396 | |
| 397 | sdio_claim_host(card->func); |
| 398 | |
| 399 | ret = sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size); |
| 400 | |
| 401 | sdio_release_host(card->func); |
| 402 | |
| 403 | return ret; |
| 404 | } |
| 405 | |
| 406 | /* |
| 407 | * This function reads multiple data from SDIO card memory. |
| 408 | */ |
| 409 | static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer, |
| 410 | u32 len, u32 port, u8 claim) |
| 411 | { |
| 412 | struct sdio_mmc_card *card = adapter->card; |
| 413 | int ret; |
| 414 | u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE |
| 415 | : BLOCK_MODE; |
| 416 | u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; |
| 417 | u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE) |
| 418 | : len; |
| 419 | u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); |
| 420 | |
| 421 | if (claim) |
| 422 | sdio_claim_host(card->func); |
| 423 | |
| 424 | ret = sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size); |
| 425 | |
| 426 | if (claim) |
| 427 | sdio_release_host(card->func); |
| 428 | |
| 429 | return ret; |
| 430 | } |
| 431 | |
| 432 | /* |
| 433 | * This function wakes up the card. |
| 434 | * |
| 435 | * A host power up command is written to the card configuration |
| 436 | * register to wake up the card. |
| 437 | */ |
| 438 | static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) |
| 439 | { |
| 440 | mwifiex_dbg(adapter, EVENT, |
| 441 | "event: wakeup device...\n"); |
| 442 | |
| 443 | return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP); |
| 444 | } |
| 445 | |
| 446 | /* |
| 447 | * This function is called after the card has woken up. |
| 448 | * |
| 449 | * The card configuration register is reset. |
| 450 | */ |
| 451 | static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter) |
| 452 | { |
| 453 | mwifiex_dbg(adapter, EVENT, |
| 454 | "cmd: wakeup device completed\n"); |
| 455 | |
| 456 | return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0); |
| 457 | } |
| 458 | |
| 459 | /* |
| 460 | * This function is used to initialize IO ports for the |
| 461 | * chipsets supporting SDIO new mode eg SD8897. |
| 462 | */ |
| 463 | static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter *adapter) |
| 464 | { |
| 465 | u8 reg; |
| 466 | struct sdio_mmc_card *card = adapter->card; |
| 467 | |
| 468 | adapter->ioport = MEM_PORT; |
| 469 | |
| 470 | /* enable sdio new mode */ |
| 471 | if (mwifiex_read_reg(adapter, card->reg->card_cfg_2_1_reg, ®)) |
| 472 | return -1; |
| 473 | if (mwifiex_write_reg(adapter, card->reg->card_cfg_2_1_reg, |
| 474 | reg | CMD53_NEW_MODE)) |
| 475 | return -1; |
| 476 | |
| 477 | /* Configure cmd port and enable reading rx length from the register */ |
| 478 | if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_0, ®)) |
| 479 | return -1; |
| 480 | if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_0, |
| 481 | reg | CMD_PORT_RD_LEN_EN)) |
| 482 | return -1; |
| 483 | |
| 484 | /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is |
| 485 | * completed |
| 486 | */ |
| 487 | if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_1, ®)) |
| 488 | return -1; |
| 489 | if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_1, |
| 490 | reg | CMD_PORT_AUTO_EN)) |
| 491 | return -1; |
| 492 | |
| 493 | return 0; |
| 494 | } |
| 495 | |
| 496 | /* This function initializes the IO ports. |
| 497 | * |
| 498 | * The following operations are performed - |
| 499 | * - Read the IO ports (0, 1 and 2) |
| 500 | * - Set host interrupt Reset-To-Read to clear |
| 501 | * - Set auto re-enable interrupt |
| 502 | */ |
| 503 | static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter) |
| 504 | { |
| 505 | u8 reg; |
| 506 | struct sdio_mmc_card *card = adapter->card; |
| 507 | |
| 508 | adapter->ioport = 0; |
| 509 | |
| 510 | if (card->supports_sdio_new_mode) { |
| 511 | if (mwifiex_init_sdio_new_mode(adapter)) |
| 512 | return -1; |
| 513 | goto cont; |
| 514 | } |
| 515 | |
| 516 | /* Read the IO port */ |
| 517 | if (!mwifiex_read_reg(adapter, card->reg->io_port_0_reg, ®)) |
| 518 | adapter->ioport |= (reg & 0xff); |
| 519 | else |
| 520 | return -1; |
| 521 | |
| 522 | if (!mwifiex_read_reg(adapter, card->reg->io_port_1_reg, ®)) |
| 523 | adapter->ioport |= ((reg & 0xff) << 8); |
| 524 | else |
| 525 | return -1; |
| 526 | |
| 527 | if (!mwifiex_read_reg(adapter, card->reg->io_port_2_reg, ®)) |
| 528 | adapter->ioport |= ((reg & 0xff) << 16); |
| 529 | else |
| 530 | return -1; |
| 531 | cont: |
| 532 | mwifiex_dbg(adapter, INFO, |
| 533 | "info: SDIO FUNC1 IO port: %#x\n", adapter->ioport); |
| 534 | |
| 535 | /* Set Host interrupt reset to read to clear */ |
| 536 | if (!mwifiex_read_reg(adapter, card->reg->host_int_rsr_reg, ®)) |
| 537 | mwifiex_write_reg(adapter, card->reg->host_int_rsr_reg, |
| 538 | reg | card->reg->sdio_int_mask); |
| 539 | else |
| 540 | return -1; |
| 541 | |
| 542 | /* Dnld/Upld ready set to auto reset */ |
| 543 | if (!mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, ®)) |
| 544 | mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg, |
| 545 | reg | AUTO_RE_ENABLE_INT); |
| 546 | else |
| 547 | return -1; |
| 548 | |
| 549 | return 0; |
| 550 | } |
| 551 | |
| 552 | /* |
| 553 | * This function sends data to the card. |
| 554 | */ |
| 555 | static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter, |
| 556 | u8 *payload, u32 pkt_len, u32 port) |
| 557 | { |
| 558 | u32 i = 0; |
| 559 | int ret; |
| 560 | |
| 561 | do { |
| 562 | ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port); |
| 563 | if (ret) { |
| 564 | i++; |
| 565 | mwifiex_dbg(adapter, ERROR, |
| 566 | "host_to_card, write iomem\t" |
| 567 | "(%d) failed: %d\n", i, ret); |
| 568 | if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04)) |
| 569 | mwifiex_dbg(adapter, ERROR, |
| 570 | "write CFG reg failed\n"); |
| 571 | |
| 572 | ret = -1; |
| 573 | if (i > MAX_WRITE_IOMEM_RETRY) |
| 574 | return ret; |
| 575 | } |
| 576 | } while (ret == -1); |
| 577 | |
| 578 | return ret; |
| 579 | } |
| 580 | |
| 581 | /* |
| 582 | * This function gets the read port. |
| 583 | * |
| 584 | * If control port bit is set in MP read bitmap, the control port |
| 585 | * is returned, otherwise the current read port is returned and |
| 586 | * the value is increased (provided it does not reach the maximum |
| 587 | * limit, in which case it is reset to 1) |
| 588 | */ |
| 589 | static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port) |
| 590 | { |
| 591 | struct sdio_mmc_card *card = adapter->card; |
| 592 | const struct mwifiex_sdio_card_reg *reg = card->reg; |
| 593 | u32 rd_bitmap = card->mp_rd_bitmap; |
| 594 | |
| 595 | mwifiex_dbg(adapter, DATA, |
| 596 | "data: mp_rd_bitmap=0x%08x\n", rd_bitmap); |
| 597 | |
| 598 | if (card->supports_sdio_new_mode) { |
| 599 | if (!(rd_bitmap & reg->data_port_mask)) |
| 600 | return -1; |
| 601 | } else { |
| 602 | if (!(rd_bitmap & (CTRL_PORT_MASK | reg->data_port_mask))) |
| 603 | return -1; |
| 604 | } |
| 605 | |
| 606 | if ((card->has_control_mask) && |
| 607 | (card->mp_rd_bitmap & CTRL_PORT_MASK)) { |
| 608 | card->mp_rd_bitmap &= (u32) (~CTRL_PORT_MASK); |
| 609 | *port = CTRL_PORT; |
| 610 | mwifiex_dbg(adapter, DATA, |
| 611 | "data: port=%d mp_rd_bitmap=0x%08x\n", |
| 612 | *port, card->mp_rd_bitmap); |
| 613 | return 0; |
| 614 | } |
| 615 | |
| 616 | if (!(card->mp_rd_bitmap & (1 << card->curr_rd_port))) |
| 617 | return -1; |
| 618 | |
| 619 | /* We are now handling the SDIO data ports */ |
| 620 | card->mp_rd_bitmap &= (u32)(~(1 << card->curr_rd_port)); |
| 621 | *port = card->curr_rd_port; |
| 622 | |
| 623 | if (++card->curr_rd_port == card->max_ports) |
| 624 | card->curr_rd_port = reg->start_rd_port; |
| 625 | |
| 626 | mwifiex_dbg(adapter, DATA, |
| 627 | "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n", |
| 628 | *port, rd_bitmap, card->mp_rd_bitmap); |
| 629 | |
| 630 | return 0; |
| 631 | } |
| 632 | |
| 633 | /* |
| 634 | * This function gets the write port for data. |
| 635 | * |
| 636 | * The current write port is returned if available and the value is |
| 637 | * increased (provided it does not reach the maximum limit, in which |
| 638 | * case it is reset to 1) |
| 639 | */ |
| 640 | static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u32 *port) |
| 641 | { |
| 642 | struct sdio_mmc_card *card = adapter->card; |
| 643 | const struct mwifiex_sdio_card_reg *reg = card->reg; |
| 644 | u32 wr_bitmap = card->mp_wr_bitmap; |
| 645 | |
| 646 | mwifiex_dbg(adapter, DATA, |
| 647 | "data: mp_wr_bitmap=0x%08x\n", wr_bitmap); |
| 648 | |
| 649 | if (!(wr_bitmap & card->mp_data_port_mask)) { |
| 650 | adapter->data_sent = true; |
| 651 | return -EBUSY; |
| 652 | } |
| 653 | |
| 654 | if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) { |
| 655 | card->mp_wr_bitmap &= (u32) (~(1 << card->curr_wr_port)); |
| 656 | *port = card->curr_wr_port; |
| 657 | if (++card->curr_wr_port == card->mp_end_port) |
| 658 | card->curr_wr_port = reg->start_wr_port; |
| 659 | } else { |
| 660 | adapter->data_sent = true; |
| 661 | return -EBUSY; |
| 662 | } |
| 663 | |
| 664 | if ((card->has_control_mask) && (*port == CTRL_PORT)) { |
| 665 | mwifiex_dbg(adapter, ERROR, |
| 666 | "invalid data port=%d cur port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n", |
| 667 | *port, card->curr_wr_port, wr_bitmap, |
| 668 | card->mp_wr_bitmap); |
| 669 | return -1; |
| 670 | } |
| 671 | |
| 672 | mwifiex_dbg(adapter, DATA, |
| 673 | "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n", |
| 674 | *port, wr_bitmap, card->mp_wr_bitmap); |
| 675 | |
| 676 | return 0; |
| 677 | } |
| 678 | |
| 679 | /* |
| 680 | * This function polls the card status. |
| 681 | */ |
| 682 | static int |
| 683 | mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits) |
| 684 | { |
| 685 | struct sdio_mmc_card *card = adapter->card; |
| 686 | u32 tries; |
| 687 | u8 cs; |
| 688 | |
| 689 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { |
| 690 | if (mwifiex_read_reg(adapter, card->reg->poll_reg, &cs)) |
| 691 | break; |
| 692 | else if ((cs & bits) == bits) |
| 693 | return 0; |
| 694 | |
| 695 | usleep_range(10, 20); |
| 696 | } |
| 697 | |
| 698 | mwifiex_dbg(adapter, ERROR, |
| 699 | "poll card status failed, tries = %d\n", tries); |
| 700 | |
| 701 | return -1; |
| 702 | } |
| 703 | |
| 704 | /* |
| 705 | * This function reads the firmware status. |
| 706 | */ |
| 707 | static int |
| 708 | mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat) |
| 709 | { |
| 710 | struct sdio_mmc_card *card = adapter->card; |
| 711 | const struct mwifiex_sdio_card_reg *reg = card->reg; |
| 712 | u8 fws0, fws1; |
| 713 | |
| 714 | if (mwifiex_read_reg(adapter, reg->status_reg_0, &fws0)) |
| 715 | return -1; |
| 716 | |
| 717 | if (mwifiex_read_reg(adapter, reg->status_reg_1, &fws1)) |
| 718 | return -1; |
| 719 | |
| 720 | *dat = (u16) ((fws1 << 8) | fws0); |
| 721 | |
| 722 | return 0; |
| 723 | } |
| 724 | |
| 725 | /* |
| 726 | * This function disables the host interrupt. |
| 727 | * |
| 728 | * The host interrupt mask is read, the disable bit is reset and |
| 729 | * written back to the card host interrupt mask register. |
| 730 | */ |
| 731 | static void mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter) |
| 732 | { |
| 733 | struct sdio_mmc_card *card = adapter->card; |
| 734 | struct sdio_func *func = card->func; |
| 735 | |
| 736 | sdio_claim_host(func); |
| 737 | mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg, 0); |
| 738 | sdio_release_irq(func); |
| 739 | sdio_release_host(func); |
| 740 | } |
| 741 | |
| 742 | /* |
| 743 | * This function reads the interrupt status from card. |
| 744 | */ |
| 745 | static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter) |
| 746 | { |
| 747 | struct sdio_mmc_card *card = adapter->card; |
| 748 | u8 sdio_ireg; |
| 749 | unsigned long flags; |
| 750 | |
| 751 | if (mwifiex_read_data_sync(adapter, card->mp_regs, |
| 752 | card->reg->max_mp_regs, |
| 753 | REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, 0)) { |
| 754 | mwifiex_dbg(adapter, ERROR, "read mp_regs failed\n"); |
| 755 | return; |
| 756 | } |
| 757 | |
| 758 | sdio_ireg = card->mp_regs[card->reg->host_int_status_reg]; |
| 759 | if (sdio_ireg) { |
| 760 | /* |
| 761 | * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS |
| 762 | * For SDIO new mode CMD port interrupts |
| 763 | * DN_LD_CMD_PORT_HOST_INT_STATUS and/or |
| 764 | * UP_LD_CMD_PORT_HOST_INT_STATUS |
| 765 | * Clear the interrupt status register |
| 766 | */ |
| 767 | mwifiex_dbg(adapter, INTR, |
| 768 | "int: sdio_ireg = %#x\n", sdio_ireg); |
| 769 | spin_lock_irqsave(&adapter->int_lock, flags); |
| 770 | adapter->int_status |= sdio_ireg; |
| 771 | spin_unlock_irqrestore(&adapter->int_lock, flags); |
| 772 | } |
| 773 | } |
| 774 | |
| 775 | /* |
| 776 | * SDIO interrupt handler. |
| 777 | * |
| 778 | * This function reads the interrupt status from firmware and handles |
| 779 | * the interrupt in current thread (ksdioirqd) right away. |
| 780 | */ |
| 781 | static void |
| 782 | mwifiex_sdio_interrupt(struct sdio_func *func) |
| 783 | { |
| 784 | struct mwifiex_adapter *adapter; |
| 785 | struct sdio_mmc_card *card; |
| 786 | |
| 787 | card = sdio_get_drvdata(func); |
| 788 | if (!card || !card->adapter) { |
| 789 | pr_debug("int: func=%p card=%p adapter=%p\n", |
| 790 | func, card, card ? card->adapter : NULL); |
| 791 | return; |
| 792 | } |
| 793 | adapter = card->adapter; |
| 794 | |
| 795 | if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP) |
| 796 | adapter->ps_state = PS_STATE_AWAKE; |
| 797 | |
| 798 | mwifiex_interrupt_status(adapter); |
| 799 | mwifiex_main_process(adapter); |
| 800 | } |
| 801 | |
| 802 | /* |
| 803 | * This function enables the host interrupt. |
| 804 | * |
| 805 | * The host interrupt enable mask is written to the card |
| 806 | * host interrupt mask register. |
| 807 | */ |
| 808 | static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter) |
| 809 | { |
| 810 | struct sdio_mmc_card *card = adapter->card; |
| 811 | struct sdio_func *func = card->func; |
| 812 | int ret; |
| 813 | |
| 814 | sdio_claim_host(func); |
| 815 | |
| 816 | /* Request the SDIO IRQ */ |
| 817 | ret = sdio_claim_irq(func, mwifiex_sdio_interrupt); |
| 818 | if (ret) { |
| 819 | mwifiex_dbg(adapter, ERROR, |
| 820 | "claim irq failed: ret=%d\n", ret); |
| 821 | goto out; |
| 822 | } |
| 823 | |
| 824 | /* Simply write the mask to the register */ |
| 825 | ret = mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg, |
| 826 | card->reg->host_int_enable); |
| 827 | if (ret) { |
| 828 | mwifiex_dbg(adapter, ERROR, |
| 829 | "enable host interrupt failed\n"); |
| 830 | sdio_release_irq(func); |
| 831 | } |
| 832 | |
| 833 | out: |
| 834 | sdio_release_host(func); |
| 835 | return ret; |
| 836 | } |
| 837 | |
| 838 | /* |
| 839 | * This function sends a data buffer to the card. |
| 840 | */ |
| 841 | static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter, |
| 842 | u32 *type, u8 *buffer, |
| 843 | u32 npayload, u32 ioport) |
| 844 | { |
| 845 | int ret; |
| 846 | u32 nb; |
| 847 | |
| 848 | if (!buffer) { |
| 849 | mwifiex_dbg(adapter, ERROR, |
| 850 | "%s: buffer is NULL\n", __func__); |
| 851 | return -1; |
| 852 | } |
| 853 | |
| 854 | ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1); |
| 855 | |
| 856 | if (ret) { |
| 857 | mwifiex_dbg(adapter, ERROR, |
| 858 | "%s: read iomem failed: %d\n", __func__, |
| 859 | ret); |
| 860 | return -1; |
| 861 | } |
| 862 | |
| 863 | nb = le16_to_cpu(*(__le16 *) (buffer)); |
| 864 | if (nb > npayload) { |
| 865 | mwifiex_dbg(adapter, ERROR, |
| 866 | "%s: invalid packet, nb=%d npayload=%d\n", |
| 867 | __func__, nb, npayload); |
| 868 | return -1; |
| 869 | } |
| 870 | |
| 871 | *type = le16_to_cpu(*(__le16 *) (buffer + 2)); |
| 872 | |
| 873 | return ret; |
| 874 | } |
| 875 | |
| 876 | /* |
| 877 | * This function downloads the firmware to the card. |
| 878 | * |
| 879 | * Firmware is downloaded to the card in blocks. Every block download |
| 880 | * is tested for CRC errors, and retried a number of times before |
| 881 | * returning failure. |
| 882 | */ |
| 883 | static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter, |
| 884 | struct mwifiex_fw_image *fw) |
| 885 | { |
| 886 | struct sdio_mmc_card *card = adapter->card; |
| 887 | const struct mwifiex_sdio_card_reg *reg = card->reg; |
| 888 | int ret; |
| 889 | u8 *firmware = fw->fw_buf; |
| 890 | u32 firmware_len = fw->fw_len; |
| 891 | u32 offset = 0; |
| 892 | u8 base0, base1; |
| 893 | u8 *fwbuf; |
| 894 | u16 len = 0; |
| 895 | u32 txlen, tx_blocks = 0, tries; |
| 896 | u32 i = 0; |
| 897 | |
| 898 | if (!firmware_len) { |
| 899 | mwifiex_dbg(adapter, ERROR, |
| 900 | "firmware image not found! Terminating download\n"); |
| 901 | return -1; |
| 902 | } |
| 903 | |
| 904 | mwifiex_dbg(adapter, INFO, |
| 905 | "info: downloading FW image (%d bytes)\n", |
| 906 | firmware_len); |
| 907 | |
| 908 | /* Assume that the allocated buffer is 8-byte aligned */ |
| 909 | fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL); |
| 910 | if (!fwbuf) |
| 911 | return -ENOMEM; |
| 912 | |
| 913 | /* Perform firmware data transfer */ |
| 914 | do { |
| 915 | /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY |
| 916 | bits */ |
| 917 | ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY | |
| 918 | DN_LD_CARD_RDY); |
| 919 | if (ret) { |
| 920 | mwifiex_dbg(adapter, ERROR, |
| 921 | "FW download with helper:\t" |
| 922 | "poll status timeout @ %d\n", offset); |
| 923 | goto done; |
| 924 | } |
| 925 | |
| 926 | /* More data? */ |
| 927 | if (offset >= firmware_len) |
| 928 | break; |
| 929 | |
| 930 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { |
| 931 | ret = mwifiex_read_reg(adapter, reg->base_0_reg, |
| 932 | &base0); |
| 933 | if (ret) { |
| 934 | mwifiex_dbg(adapter, ERROR, |
| 935 | "dev BASE0 register read failed:\t" |
| 936 | "base0=%#04X(%d). Terminating dnld\n", |
| 937 | base0, base0); |
| 938 | goto done; |
| 939 | } |
| 940 | ret = mwifiex_read_reg(adapter, reg->base_1_reg, |
| 941 | &base1); |
| 942 | if (ret) { |
| 943 | mwifiex_dbg(adapter, ERROR, |
| 944 | "dev BASE1 register read failed:\t" |
| 945 | "base1=%#04X(%d). Terminating dnld\n", |
| 946 | base1, base1); |
| 947 | goto done; |
| 948 | } |
| 949 | len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff)); |
| 950 | |
| 951 | if (len) |
| 952 | break; |
| 953 | |
| 954 | usleep_range(10, 20); |
| 955 | } |
| 956 | |
| 957 | if (!len) { |
| 958 | break; |
| 959 | } else if (len > MWIFIEX_UPLD_SIZE) { |
| 960 | mwifiex_dbg(adapter, ERROR, |
| 961 | "FW dnld failed @ %d, invalid length %d\n", |
| 962 | offset, len); |
| 963 | ret = -1; |
| 964 | goto done; |
| 965 | } |
| 966 | |
| 967 | txlen = len; |
| 968 | |
| 969 | if (len & BIT(0)) { |
| 970 | i++; |
| 971 | if (i > MAX_WRITE_IOMEM_RETRY) { |
| 972 | mwifiex_dbg(adapter, ERROR, |
| 973 | "FW dnld failed @ %d, over max retry\n", |
| 974 | offset); |
| 975 | ret = -1; |
| 976 | goto done; |
| 977 | } |
| 978 | mwifiex_dbg(adapter, ERROR, |
| 979 | "CRC indicated by the helper:\t" |
| 980 | "len = 0x%04X, txlen = %d\n", len, txlen); |
| 981 | len &= ~BIT(0); |
| 982 | /* Setting this to 0 to resend from same offset */ |
| 983 | txlen = 0; |
| 984 | } else { |
| 985 | i = 0; |
| 986 | |
| 987 | /* Set blocksize to transfer - checking for last |
| 988 | block */ |
| 989 | if (firmware_len - offset < txlen) |
| 990 | txlen = firmware_len - offset; |
| 991 | |
| 992 | tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1) |
| 993 | / MWIFIEX_SDIO_BLOCK_SIZE; |
| 994 | |
| 995 | /* Copy payload to buffer */ |
| 996 | memmove(fwbuf, &firmware[offset], txlen); |
| 997 | } |
| 998 | |
| 999 | ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks * |
| 1000 | MWIFIEX_SDIO_BLOCK_SIZE, |
| 1001 | adapter->ioport); |
| 1002 | if (ret) { |
| 1003 | mwifiex_dbg(adapter, ERROR, |
| 1004 | "FW download, write iomem (%d) failed @ %d\n", |
| 1005 | i, offset); |
| 1006 | if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04)) |
| 1007 | mwifiex_dbg(adapter, ERROR, |
| 1008 | "write CFG reg failed\n"); |
| 1009 | |
| 1010 | ret = -1; |
| 1011 | goto done; |
| 1012 | } |
| 1013 | |
| 1014 | offset += txlen; |
| 1015 | } while (true); |
| 1016 | |
| 1017 | mwifiex_dbg(adapter, MSG, |
| 1018 | "info: FW download over, size %d bytes\n", offset); |
| 1019 | |
| 1020 | ret = 0; |
| 1021 | done: |
| 1022 | kfree(fwbuf); |
| 1023 | return ret; |
| 1024 | } |
| 1025 | |
| 1026 | /* |
| 1027 | * This function checks the firmware status in card. |
| 1028 | * |
| 1029 | * The winner interface is also determined by this function. |
| 1030 | */ |
| 1031 | static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter, |
| 1032 | u32 poll_num) |
| 1033 | { |
| 1034 | struct sdio_mmc_card *card = adapter->card; |
| 1035 | int ret = 0; |
| 1036 | u16 firmware_stat; |
| 1037 | u32 tries; |
| 1038 | u8 winner_status; |
| 1039 | |
| 1040 | /* Wait for firmware initialization event */ |
| 1041 | for (tries = 0; tries < poll_num; tries++) { |
| 1042 | ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat); |
| 1043 | if (ret) |
| 1044 | continue; |
| 1045 | if (firmware_stat == FIRMWARE_READY_SDIO) { |
| 1046 | ret = 0; |
| 1047 | break; |
| 1048 | } else { |
| 1049 | msleep(100); |
| 1050 | ret = -1; |
| 1051 | } |
| 1052 | } |
| 1053 | |
| 1054 | if (ret) { |
| 1055 | if (mwifiex_read_reg |
| 1056 | (adapter, card->reg->status_reg_0, &winner_status)) |
| 1057 | winner_status = 0; |
| 1058 | |
| 1059 | if (winner_status) |
| 1060 | adapter->winner = 0; |
| 1061 | else |
| 1062 | adapter->winner = 1; |
| 1063 | } |
| 1064 | return ret; |
| 1065 | } |
| 1066 | |
| 1067 | /* |
| 1068 | * This function decode sdio aggreation pkt. |
| 1069 | * |
| 1070 | * Based on the the data block size and pkt_len, |
| 1071 | * skb data will be decoded to few packets. |
| 1072 | */ |
| 1073 | static void mwifiex_deaggr_sdio_pkt(struct mwifiex_adapter *adapter, |
| 1074 | struct sk_buff *skb) |
| 1075 | { |
| 1076 | u32 total_pkt_len, pkt_len; |
| 1077 | struct sk_buff *skb_deaggr; |
| 1078 | u32 pkt_type; |
| 1079 | u16 blk_size; |
| 1080 | u8 blk_num; |
| 1081 | u8 *data; |
| 1082 | |
| 1083 | data = skb->data; |
| 1084 | total_pkt_len = skb->len; |
| 1085 | |
| 1086 | while (total_pkt_len >= (SDIO_HEADER_OFFSET + INTF_HEADER_LEN)) { |
| 1087 | if (total_pkt_len < adapter->sdio_rx_block_size) |
| 1088 | break; |
| 1089 | blk_num = *(data + BLOCK_NUMBER_OFFSET); |
| 1090 | blk_size = adapter->sdio_rx_block_size * blk_num; |
| 1091 | if (blk_size > total_pkt_len) { |
| 1092 | mwifiex_dbg(adapter, ERROR, |
| 1093 | "%s: error in blk_size,\t" |
| 1094 | "blk_num=%d, blk_size=%d, total_pkt_len=%d\n", |
| 1095 | __func__, blk_num, blk_size, total_pkt_len); |
| 1096 | break; |
| 1097 | } |
| 1098 | pkt_len = le16_to_cpu(*(__le16 *)(data + SDIO_HEADER_OFFSET)); |
| 1099 | pkt_type = le16_to_cpu(*(__le16 *)(data + SDIO_HEADER_OFFSET + |
| 1100 | 2)); |
| 1101 | if ((pkt_len + SDIO_HEADER_OFFSET) > blk_size) { |
| 1102 | mwifiex_dbg(adapter, ERROR, |
| 1103 | "%s: error in pkt_len,\t" |
| 1104 | "pkt_len=%d, blk_size=%d\n", |
| 1105 | __func__, pkt_len, blk_size); |
| 1106 | break; |
| 1107 | } |
| 1108 | skb_deaggr = mwifiex_alloc_dma_align_buf(pkt_len, |
| 1109 | GFP_KERNEL | GFP_DMA); |
| 1110 | if (!skb_deaggr) |
| 1111 | break; |
| 1112 | skb_put(skb_deaggr, pkt_len); |
| 1113 | memcpy(skb_deaggr->data, data + SDIO_HEADER_OFFSET, pkt_len); |
| 1114 | skb_pull(skb_deaggr, INTF_HEADER_LEN); |
| 1115 | |
| 1116 | mwifiex_handle_rx_packet(adapter, skb_deaggr); |
| 1117 | data += blk_size; |
| 1118 | total_pkt_len -= blk_size; |
| 1119 | } |
| 1120 | } |
| 1121 | |
| 1122 | /* |
| 1123 | * This function decodes a received packet. |
| 1124 | * |
| 1125 | * Based on the type, the packet is treated as either a data, or |
| 1126 | * a command response, or an event, and the correct handler |
| 1127 | * function is invoked. |
| 1128 | */ |
| 1129 | static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter, |
| 1130 | struct sk_buff *skb, u32 upld_typ) |
| 1131 | { |
| 1132 | u8 *cmd_buf; |
| 1133 | __le16 *curr_ptr = (__le16 *)skb->data; |
| 1134 | u16 pkt_len = le16_to_cpu(*curr_ptr); |
| 1135 | struct mwifiex_rxinfo *rx_info; |
| 1136 | |
| 1137 | if (upld_typ != MWIFIEX_TYPE_AGGR_DATA) { |
| 1138 | skb_trim(skb, pkt_len); |
| 1139 | skb_pull(skb, INTF_HEADER_LEN); |
| 1140 | } |
| 1141 | |
| 1142 | switch (upld_typ) { |
| 1143 | case MWIFIEX_TYPE_AGGR_DATA: |
| 1144 | mwifiex_dbg(adapter, INFO, |
| 1145 | "info: --- Rx: Aggr Data packet ---\n"); |
| 1146 | rx_info = MWIFIEX_SKB_RXCB(skb); |
| 1147 | rx_info->buf_type = MWIFIEX_TYPE_AGGR_DATA; |
| 1148 | if (adapter->rx_work_enabled) { |
| 1149 | skb_queue_tail(&adapter->rx_data_q, skb); |
| 1150 | atomic_inc(&adapter->rx_pending); |
| 1151 | adapter->data_received = true; |
| 1152 | } else { |
| 1153 | mwifiex_deaggr_sdio_pkt(adapter, skb); |
| 1154 | dev_kfree_skb_any(skb); |
| 1155 | } |
| 1156 | break; |
| 1157 | |
| 1158 | case MWIFIEX_TYPE_DATA: |
| 1159 | mwifiex_dbg(adapter, DATA, |
| 1160 | "info: --- Rx: Data packet ---\n"); |
| 1161 | if (adapter->rx_work_enabled) { |
| 1162 | skb_queue_tail(&adapter->rx_data_q, skb); |
| 1163 | adapter->data_received = true; |
| 1164 | atomic_inc(&adapter->rx_pending); |
| 1165 | } else { |
| 1166 | mwifiex_handle_rx_packet(adapter, skb); |
| 1167 | } |
| 1168 | break; |
| 1169 | |
| 1170 | case MWIFIEX_TYPE_CMD: |
| 1171 | mwifiex_dbg(adapter, CMD, |
| 1172 | "info: --- Rx: Cmd Response ---\n"); |
| 1173 | /* take care of curr_cmd = NULL case */ |
| 1174 | if (!adapter->curr_cmd) { |
| 1175 | cmd_buf = adapter->upld_buf; |
| 1176 | |
| 1177 | if (adapter->ps_state == PS_STATE_SLEEP_CFM) |
| 1178 | mwifiex_process_sleep_confirm_resp(adapter, |
| 1179 | skb->data, |
| 1180 | skb->len); |
| 1181 | |
| 1182 | memcpy(cmd_buf, skb->data, |
| 1183 | min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER, |
| 1184 | skb->len)); |
| 1185 | |
| 1186 | dev_kfree_skb_any(skb); |
| 1187 | } else { |
| 1188 | adapter->cmd_resp_received = true; |
| 1189 | adapter->curr_cmd->resp_skb = skb; |
| 1190 | } |
| 1191 | break; |
| 1192 | |
| 1193 | case MWIFIEX_TYPE_EVENT: |
| 1194 | mwifiex_dbg(adapter, EVENT, |
| 1195 | "info: --- Rx: Event ---\n"); |
| 1196 | adapter->event_cause = le32_to_cpu(*(__le32 *) skb->data); |
| 1197 | |
| 1198 | if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE)) |
| 1199 | memcpy(adapter->event_body, |
| 1200 | skb->data + MWIFIEX_EVENT_HEADER_LEN, |
| 1201 | skb->len); |
| 1202 | |
| 1203 | /* event cause has been saved to adapter->event_cause */ |
| 1204 | adapter->event_received = true; |
| 1205 | adapter->event_skb = skb; |
| 1206 | |
| 1207 | break; |
| 1208 | |
| 1209 | default: |
| 1210 | mwifiex_dbg(adapter, ERROR, |
| 1211 | "unknown upload type %#x\n", upld_typ); |
| 1212 | dev_kfree_skb_any(skb); |
| 1213 | break; |
| 1214 | } |
| 1215 | |
| 1216 | return 0; |
| 1217 | } |
| 1218 | |
| 1219 | /* |
| 1220 | * This function transfers received packets from card to driver, performing |
| 1221 | * aggregation if required. |
| 1222 | * |
| 1223 | * For data received on control port, or if aggregation is disabled, the |
| 1224 | * received buffers are uploaded as separate packets. However, if aggregation |
| 1225 | * is enabled and required, the buffers are copied onto an aggregation buffer, |
| 1226 | * provided there is space left, processed and finally uploaded. |
| 1227 | */ |
| 1228 | static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter, |
| 1229 | u16 rx_len, u8 port) |
| 1230 | { |
| 1231 | struct sdio_mmc_card *card = adapter->card; |
| 1232 | s32 f_do_rx_aggr = 0; |
| 1233 | s32 f_do_rx_cur = 0; |
| 1234 | s32 f_aggr_cur = 0; |
| 1235 | s32 f_post_aggr_cur = 0; |
| 1236 | struct sk_buff *skb_deaggr; |
| 1237 | struct sk_buff *skb = NULL; |
| 1238 | u32 pkt_len, pkt_type, mport, pind; |
| 1239 | u8 *curr_ptr; |
| 1240 | |
| 1241 | if ((card->has_control_mask) && (port == CTRL_PORT)) { |
| 1242 | /* Read the command Resp without aggr */ |
| 1243 | mwifiex_dbg(adapter, CMD, |
| 1244 | "info: %s: no aggregation for cmd\t" |
| 1245 | "response\n", __func__); |
| 1246 | |
| 1247 | f_do_rx_cur = 1; |
| 1248 | goto rx_curr_single; |
| 1249 | } |
| 1250 | |
| 1251 | if (!card->mpa_rx.enabled) { |
| 1252 | mwifiex_dbg(adapter, WARN, |
| 1253 | "info: %s: rx aggregation disabled\n", |
| 1254 | __func__); |
| 1255 | |
| 1256 | f_do_rx_cur = 1; |
| 1257 | goto rx_curr_single; |
| 1258 | } |
| 1259 | |
| 1260 | if ((!card->has_control_mask && (card->mp_rd_bitmap & |
| 1261 | card->reg->data_port_mask)) || |
| 1262 | (card->has_control_mask && (card->mp_rd_bitmap & |
| 1263 | (~((u32) CTRL_PORT_MASK))))) { |
| 1264 | /* Some more data RX pending */ |
| 1265 | mwifiex_dbg(adapter, INFO, |
| 1266 | "info: %s: not last packet\n", __func__); |
| 1267 | |
| 1268 | if (MP_RX_AGGR_IN_PROGRESS(card)) { |
| 1269 | if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len)) { |
| 1270 | f_aggr_cur = 1; |
| 1271 | } else { |
| 1272 | /* No room in Aggr buf, do rx aggr now */ |
| 1273 | f_do_rx_aggr = 1; |
| 1274 | f_post_aggr_cur = 1; |
| 1275 | } |
| 1276 | } else { |
| 1277 | /* Rx aggr not in progress */ |
| 1278 | f_aggr_cur = 1; |
| 1279 | } |
| 1280 | |
| 1281 | } else { |
| 1282 | /* No more data RX pending */ |
| 1283 | mwifiex_dbg(adapter, INFO, |
| 1284 | "info: %s: last packet\n", __func__); |
| 1285 | |
| 1286 | if (MP_RX_AGGR_IN_PROGRESS(card)) { |
| 1287 | f_do_rx_aggr = 1; |
| 1288 | if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len)) |
| 1289 | f_aggr_cur = 1; |
| 1290 | else |
| 1291 | /* No room in Aggr buf, do rx aggr now */ |
| 1292 | f_do_rx_cur = 1; |
| 1293 | } else { |
| 1294 | f_do_rx_cur = 1; |
| 1295 | } |
| 1296 | } |
| 1297 | |
| 1298 | if (f_aggr_cur) { |
| 1299 | mwifiex_dbg(adapter, INFO, |
| 1300 | "info: current packet aggregation\n"); |
| 1301 | /* Curr pkt can be aggregated */ |
| 1302 | mp_rx_aggr_setup(card, rx_len, port); |
| 1303 | |
| 1304 | if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) || |
| 1305 | mp_rx_aggr_port_limit_reached(card)) { |
| 1306 | mwifiex_dbg(adapter, INFO, |
| 1307 | "info: %s: aggregated packet\t" |
| 1308 | "limit reached\n", __func__); |
| 1309 | /* No more pkts allowed in Aggr buf, rx it */ |
| 1310 | f_do_rx_aggr = 1; |
| 1311 | } |
| 1312 | } |
| 1313 | |
| 1314 | if (f_do_rx_aggr) { |
| 1315 | /* do aggr RX now */ |
| 1316 | mwifiex_dbg(adapter, DATA, |
| 1317 | "info: do_rx_aggr: num of packets: %d\n", |
| 1318 | card->mpa_rx.pkt_cnt); |
| 1319 | |
| 1320 | if (card->supports_sdio_new_mode) { |
| 1321 | int i; |
| 1322 | u32 port_count; |
| 1323 | |
| 1324 | for (i = 0, port_count = 0; i < card->max_ports; i++) |
| 1325 | if (card->mpa_rx.ports & BIT(i)) |
| 1326 | port_count++; |
| 1327 | |
| 1328 | /* Reading data from "start_port + 0" to "start_port + |
| 1329 | * port_count -1", so decrease the count by 1 |
| 1330 | */ |
| 1331 | port_count--; |
| 1332 | mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | |
| 1333 | (port_count << 8)) + card->mpa_rx.start_port; |
| 1334 | } else { |
| 1335 | mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | |
| 1336 | (card->mpa_rx.ports << 4)) + |
| 1337 | card->mpa_rx.start_port; |
| 1338 | } |
| 1339 | |
| 1340 | if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf, |
| 1341 | card->mpa_rx.buf_len, mport, 1)) |
| 1342 | goto error; |
| 1343 | |
| 1344 | curr_ptr = card->mpa_rx.buf; |
| 1345 | |
| 1346 | for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) { |
| 1347 | u32 *len_arr = card->mpa_rx.len_arr; |
| 1348 | |
| 1349 | /* get curr PKT len & type */ |
| 1350 | pkt_len = le16_to_cpu(*(__le16 *) &curr_ptr[0]); |
| 1351 | pkt_type = le16_to_cpu(*(__le16 *) &curr_ptr[2]); |
| 1352 | |
| 1353 | /* copy pkt to deaggr buf */ |
| 1354 | skb_deaggr = mwifiex_alloc_dma_align_buf(len_arr[pind], |
| 1355 | GFP_KERNEL | |
| 1356 | GFP_DMA); |
| 1357 | if (!skb_deaggr) { |
| 1358 | mwifiex_dbg(adapter, ERROR, "skb allocation failure\t" |
| 1359 | "drop pkt len=%d type=%d\n", |
| 1360 | pkt_len, pkt_type); |
| 1361 | curr_ptr += len_arr[pind]; |
| 1362 | continue; |
| 1363 | } |
| 1364 | |
| 1365 | skb_put(skb_deaggr, len_arr[pind]); |
| 1366 | |
| 1367 | if ((pkt_type == MWIFIEX_TYPE_DATA || |
| 1368 | (pkt_type == MWIFIEX_TYPE_AGGR_DATA && |
| 1369 | adapter->sdio_rx_aggr_enable)) && |
| 1370 | (pkt_len <= len_arr[pind])) { |
| 1371 | |
| 1372 | memcpy(skb_deaggr->data, curr_ptr, pkt_len); |
| 1373 | |
| 1374 | skb_trim(skb_deaggr, pkt_len); |
| 1375 | |
| 1376 | /* Process de-aggr packet */ |
| 1377 | mwifiex_decode_rx_packet(adapter, skb_deaggr, |
| 1378 | pkt_type); |
| 1379 | } else { |
| 1380 | mwifiex_dbg(adapter, ERROR, |
| 1381 | "drop wrong aggr pkt:\t" |
| 1382 | "sdio_single_port_rx_aggr=%d\t" |
| 1383 | "type=%d len=%d max_len=%d\n", |
| 1384 | adapter->sdio_rx_aggr_enable, |
| 1385 | pkt_type, pkt_len, len_arr[pind]); |
| 1386 | dev_kfree_skb_any(skb_deaggr); |
| 1387 | } |
| 1388 | curr_ptr += len_arr[pind]; |
| 1389 | } |
| 1390 | MP_RX_AGGR_BUF_RESET(card); |
| 1391 | } |
| 1392 | |
| 1393 | rx_curr_single: |
| 1394 | if (f_do_rx_cur) { |
| 1395 | mwifiex_dbg(adapter, INFO, "info: RX: port: %d, rx_len: %d\n", |
| 1396 | port, rx_len); |
| 1397 | |
| 1398 | skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL | GFP_DMA); |
| 1399 | if (!skb) { |
| 1400 | mwifiex_dbg(adapter, ERROR, |
| 1401 | "single skb allocated fail,\t" |
| 1402 | "drop pkt port=%d len=%d\n", port, rx_len); |
| 1403 | if (mwifiex_sdio_card_to_host(adapter, &pkt_type, |
| 1404 | card->mpa_rx.buf, rx_len, |
| 1405 | adapter->ioport + port)) |
| 1406 | goto error; |
| 1407 | return 0; |
| 1408 | } |
| 1409 | |
| 1410 | skb_put(skb, rx_len); |
| 1411 | |
| 1412 | if (mwifiex_sdio_card_to_host(adapter, &pkt_type, |
| 1413 | skb->data, skb->len, |
| 1414 | adapter->ioport + port)) |
| 1415 | goto error; |
| 1416 | if (!adapter->sdio_rx_aggr_enable && |
| 1417 | pkt_type == MWIFIEX_TYPE_AGGR_DATA) { |
| 1418 | mwifiex_dbg(adapter, ERROR, "drop wrong pkt type %d\t" |
| 1419 | "current SDIO RX Aggr not enabled\n", |
| 1420 | pkt_type); |
| 1421 | dev_kfree_skb_any(skb); |
| 1422 | return 0; |
| 1423 | } |
| 1424 | |
| 1425 | mwifiex_decode_rx_packet(adapter, skb, pkt_type); |
| 1426 | } |
| 1427 | if (f_post_aggr_cur) { |
| 1428 | mwifiex_dbg(adapter, INFO, |
| 1429 | "info: current packet aggregation\n"); |
| 1430 | /* Curr pkt can be aggregated */ |
| 1431 | mp_rx_aggr_setup(card, rx_len, port); |
| 1432 | } |
| 1433 | |
| 1434 | return 0; |
| 1435 | error: |
| 1436 | if (MP_RX_AGGR_IN_PROGRESS(card)) |
| 1437 | MP_RX_AGGR_BUF_RESET(card); |
| 1438 | |
| 1439 | if (f_do_rx_cur && skb) |
| 1440 | /* Single transfer pending. Free curr buff also */ |
| 1441 | dev_kfree_skb_any(skb); |
| 1442 | |
| 1443 | return -1; |
| 1444 | } |
| 1445 | |
| 1446 | /* |
| 1447 | * This function checks the current interrupt status. |
| 1448 | * |
| 1449 | * The following interrupts are checked and handled by this function - |
| 1450 | * - Data sent |
| 1451 | * - Command sent |
| 1452 | * - Packets received |
| 1453 | * |
| 1454 | * Since the firmware does not generate download ready interrupt if the |
| 1455 | * port updated is command port only, command sent interrupt checking |
| 1456 | * should be done manually, and for every SDIO interrupt. |
| 1457 | * |
| 1458 | * In case of Rx packets received, the packets are uploaded from card to |
| 1459 | * host and processed accordingly. |
| 1460 | */ |
| 1461 | static int mwifiex_process_int_status(struct mwifiex_adapter *adapter) |
| 1462 | { |
| 1463 | struct sdio_mmc_card *card = adapter->card; |
| 1464 | const struct mwifiex_sdio_card_reg *reg = card->reg; |
| 1465 | int ret = 0; |
| 1466 | u8 sdio_ireg; |
| 1467 | struct sk_buff *skb; |
| 1468 | u8 port = CTRL_PORT; |
| 1469 | u32 len_reg_l, len_reg_u; |
| 1470 | u32 rx_blocks; |
| 1471 | u16 rx_len; |
| 1472 | unsigned long flags; |
| 1473 | u32 bitmap; |
| 1474 | u8 cr; |
| 1475 | |
| 1476 | spin_lock_irqsave(&adapter->int_lock, flags); |
| 1477 | sdio_ireg = adapter->int_status; |
| 1478 | adapter->int_status = 0; |
| 1479 | spin_unlock_irqrestore(&adapter->int_lock, flags); |
| 1480 | |
| 1481 | if (!sdio_ireg) |
| 1482 | return ret; |
| 1483 | |
| 1484 | /* Following interrupt is only for SDIO new mode */ |
| 1485 | if (sdio_ireg & DN_LD_CMD_PORT_HOST_INT_STATUS && adapter->cmd_sent) |
| 1486 | adapter->cmd_sent = false; |
| 1487 | |
| 1488 | /* Following interrupt is only for SDIO new mode */ |
| 1489 | if (sdio_ireg & UP_LD_CMD_PORT_HOST_INT_STATUS) { |
| 1490 | u32 pkt_type; |
| 1491 | |
| 1492 | /* read the len of control packet */ |
| 1493 | rx_len = card->mp_regs[reg->cmd_rd_len_1] << 8; |
| 1494 | rx_len |= (u16)card->mp_regs[reg->cmd_rd_len_0]; |
| 1495 | rx_blocks = DIV_ROUND_UP(rx_len, MWIFIEX_SDIO_BLOCK_SIZE); |
| 1496 | if (rx_len <= INTF_HEADER_LEN || |
| 1497 | (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) > |
| 1498 | MWIFIEX_RX_DATA_BUF_SIZE) |
| 1499 | return -1; |
| 1500 | rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE); |
| 1501 | mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n", rx_len); |
| 1502 | |
| 1503 | skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL | GFP_DMA); |
| 1504 | if (!skb) |
| 1505 | return -1; |
| 1506 | |
| 1507 | skb_put(skb, rx_len); |
| 1508 | |
| 1509 | if (mwifiex_sdio_card_to_host(adapter, &pkt_type, skb->data, |
| 1510 | skb->len, adapter->ioport | |
| 1511 | CMD_PORT_SLCT)) { |
| 1512 | mwifiex_dbg(adapter, ERROR, |
| 1513 | "%s: failed to card_to_host", __func__); |
| 1514 | dev_kfree_skb_any(skb); |
| 1515 | goto term_cmd; |
| 1516 | } |
| 1517 | |
| 1518 | if ((pkt_type != MWIFIEX_TYPE_CMD) && |
| 1519 | (pkt_type != MWIFIEX_TYPE_EVENT)) |
| 1520 | mwifiex_dbg(adapter, ERROR, |
| 1521 | "%s:Received wrong packet on cmd port", |
| 1522 | __func__); |
| 1523 | |
| 1524 | mwifiex_decode_rx_packet(adapter, skb, pkt_type); |
| 1525 | } |
| 1526 | |
| 1527 | if (sdio_ireg & DN_LD_HOST_INT_STATUS) { |
| 1528 | bitmap = (u32) card->mp_regs[reg->wr_bitmap_l]; |
| 1529 | bitmap |= ((u32) card->mp_regs[reg->wr_bitmap_u]) << 8; |
| 1530 | if (card->supports_sdio_new_mode) { |
| 1531 | bitmap |= |
| 1532 | ((u32) card->mp_regs[reg->wr_bitmap_1l]) << 16; |
| 1533 | bitmap |= |
| 1534 | ((u32) card->mp_regs[reg->wr_bitmap_1u]) << 24; |
| 1535 | } |
| 1536 | card->mp_wr_bitmap = bitmap; |
| 1537 | |
| 1538 | mwifiex_dbg(adapter, INTR, |
| 1539 | "int: DNLD: wr_bitmap=0x%x\n", |
| 1540 | card->mp_wr_bitmap); |
| 1541 | if (adapter->data_sent && |
| 1542 | (card->mp_wr_bitmap & card->mp_data_port_mask)) { |
| 1543 | mwifiex_dbg(adapter, INTR, |
| 1544 | "info: <--- Tx DONE Interrupt --->\n"); |
| 1545 | adapter->data_sent = false; |
| 1546 | } |
| 1547 | } |
| 1548 | |
| 1549 | /* As firmware will not generate download ready interrupt if the port |
| 1550 | updated is command port only, cmd_sent should be done for any SDIO |
| 1551 | interrupt. */ |
| 1552 | if (card->has_control_mask && adapter->cmd_sent) { |
| 1553 | /* Check if firmware has attach buffer at command port and |
| 1554 | update just that in wr_bit_map. */ |
| 1555 | card->mp_wr_bitmap |= |
| 1556 | (u32) card->mp_regs[reg->wr_bitmap_l] & CTRL_PORT_MASK; |
| 1557 | if (card->mp_wr_bitmap & CTRL_PORT_MASK) |
| 1558 | adapter->cmd_sent = false; |
| 1559 | } |
| 1560 | |
| 1561 | mwifiex_dbg(adapter, INTR, "info: cmd_sent=%d data_sent=%d\n", |
| 1562 | adapter->cmd_sent, adapter->data_sent); |
| 1563 | if (sdio_ireg & UP_LD_HOST_INT_STATUS) { |
| 1564 | bitmap = (u32) card->mp_regs[reg->rd_bitmap_l]; |
| 1565 | bitmap |= ((u32) card->mp_regs[reg->rd_bitmap_u]) << 8; |
| 1566 | if (card->supports_sdio_new_mode) { |
| 1567 | bitmap |= |
| 1568 | ((u32) card->mp_regs[reg->rd_bitmap_1l]) << 16; |
| 1569 | bitmap |= |
| 1570 | ((u32) card->mp_regs[reg->rd_bitmap_1u]) << 24; |
| 1571 | } |
| 1572 | card->mp_rd_bitmap = bitmap; |
| 1573 | mwifiex_dbg(adapter, INTR, |
| 1574 | "int: UPLD: rd_bitmap=0x%x\n", |
| 1575 | card->mp_rd_bitmap); |
| 1576 | |
| 1577 | while (true) { |
| 1578 | ret = mwifiex_get_rd_port(adapter, &port); |
| 1579 | if (ret) { |
| 1580 | mwifiex_dbg(adapter, INFO, |
| 1581 | "info: no more rd_port available\n"); |
| 1582 | break; |
| 1583 | } |
| 1584 | len_reg_l = reg->rd_len_p0_l + (port << 1); |
| 1585 | len_reg_u = reg->rd_len_p0_u + (port << 1); |
| 1586 | rx_len = ((u16) card->mp_regs[len_reg_u]) << 8; |
| 1587 | rx_len |= (u16) card->mp_regs[len_reg_l]; |
| 1588 | mwifiex_dbg(adapter, INFO, |
| 1589 | "info: RX: port=%d rx_len=%u\n", |
| 1590 | port, rx_len); |
| 1591 | rx_blocks = |
| 1592 | (rx_len + MWIFIEX_SDIO_BLOCK_SIZE - |
| 1593 | 1) / MWIFIEX_SDIO_BLOCK_SIZE; |
| 1594 | if (rx_len <= INTF_HEADER_LEN || |
| 1595 | (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) > |
| 1596 | card->mpa_rx.buf_size) { |
| 1597 | mwifiex_dbg(adapter, ERROR, |
| 1598 | "invalid rx_len=%d\n", |
| 1599 | rx_len); |
| 1600 | return -1; |
| 1601 | } |
| 1602 | |
| 1603 | rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE); |
| 1604 | mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n", |
| 1605 | rx_len); |
| 1606 | |
| 1607 | if (mwifiex_sdio_card_to_host_mp_aggr(adapter, rx_len, |
| 1608 | port)) { |
| 1609 | mwifiex_dbg(adapter, ERROR, |
| 1610 | "card_to_host_mpa failed: int status=%#x\n", |
| 1611 | sdio_ireg); |
| 1612 | goto term_cmd; |
| 1613 | } |
| 1614 | } |
| 1615 | } |
| 1616 | |
| 1617 | return 0; |
| 1618 | |
| 1619 | term_cmd: |
| 1620 | /* terminate cmd */ |
| 1621 | if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr)) |
| 1622 | mwifiex_dbg(adapter, ERROR, "read CFG reg failed\n"); |
| 1623 | else |
| 1624 | mwifiex_dbg(adapter, INFO, |
| 1625 | "info: CFG reg val = %d\n", cr); |
| 1626 | |
| 1627 | if (mwifiex_write_reg(adapter, CONFIGURATION_REG, (cr | 0x04))) |
| 1628 | mwifiex_dbg(adapter, ERROR, |
| 1629 | "write CFG reg failed\n"); |
| 1630 | else |
| 1631 | mwifiex_dbg(adapter, INFO, "info: write success\n"); |
| 1632 | |
| 1633 | if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr)) |
| 1634 | mwifiex_dbg(adapter, ERROR, |
| 1635 | "read CFG reg failed\n"); |
| 1636 | else |
| 1637 | mwifiex_dbg(adapter, INFO, |
| 1638 | "info: CFG reg val =%x\n", cr); |
| 1639 | |
| 1640 | return -1; |
| 1641 | } |
| 1642 | |
| 1643 | /* |
| 1644 | * This function aggregates transmission buffers in driver and downloads |
| 1645 | * the aggregated packet to card. |
| 1646 | * |
| 1647 | * The individual packets are aggregated by copying into an aggregation |
| 1648 | * buffer and then downloaded to the card. Previous unsent packets in the |
| 1649 | * aggregation buffer are pre-copied first before new packets are added. |
| 1650 | * Aggregation is done till there is space left in the aggregation buffer, |
| 1651 | * or till new packets are available. |
| 1652 | * |
| 1653 | * The function will only download the packet to the card when aggregation |
| 1654 | * stops, otherwise it will just aggregate the packet in aggregation buffer |
| 1655 | * and return. |
| 1656 | */ |
| 1657 | static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter, |
| 1658 | u8 *payload, u32 pkt_len, u32 port, |
| 1659 | u32 next_pkt_len) |
| 1660 | { |
| 1661 | struct sdio_mmc_card *card = adapter->card; |
| 1662 | int ret = 0; |
| 1663 | s32 f_send_aggr_buf = 0; |
| 1664 | s32 f_send_cur_buf = 0; |
| 1665 | s32 f_precopy_cur_buf = 0; |
| 1666 | s32 f_postcopy_cur_buf = 0; |
| 1667 | u32 mport; |
| 1668 | |
| 1669 | if (!card->mpa_tx.enabled || |
| 1670 | (card->has_control_mask && (port == CTRL_PORT)) || |
| 1671 | (card->supports_sdio_new_mode && (port == CMD_PORT_SLCT))) { |
| 1672 | mwifiex_dbg(adapter, WARN, |
| 1673 | "info: %s: tx aggregation disabled\n", |
| 1674 | __func__); |
| 1675 | |
| 1676 | f_send_cur_buf = 1; |
| 1677 | goto tx_curr_single; |
| 1678 | } |
| 1679 | |
| 1680 | if (next_pkt_len) { |
| 1681 | /* More pkt in TX queue */ |
| 1682 | mwifiex_dbg(adapter, INFO, |
| 1683 | "info: %s: more packets in queue.\n", |
| 1684 | __func__); |
| 1685 | |
| 1686 | if (MP_TX_AGGR_IN_PROGRESS(card)) { |
| 1687 | if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) { |
| 1688 | f_precopy_cur_buf = 1; |
| 1689 | |
| 1690 | if (!(card->mp_wr_bitmap & |
| 1691 | (1 << card->curr_wr_port)) || |
| 1692 | !MP_TX_AGGR_BUF_HAS_ROOM( |
| 1693 | card, pkt_len + next_pkt_len)) |
| 1694 | f_send_aggr_buf = 1; |
| 1695 | } else { |
| 1696 | /* No room in Aggr buf, send it */ |
| 1697 | f_send_aggr_buf = 1; |
| 1698 | |
| 1699 | if (!(card->mp_wr_bitmap & |
| 1700 | (1 << card->curr_wr_port))) |
| 1701 | f_send_cur_buf = 1; |
| 1702 | else |
| 1703 | f_postcopy_cur_buf = 1; |
| 1704 | } |
| 1705 | } else { |
| 1706 | if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) && |
| 1707 | (card->mp_wr_bitmap & (1 << card->curr_wr_port))) |
| 1708 | f_precopy_cur_buf = 1; |
| 1709 | else |
| 1710 | f_send_cur_buf = 1; |
| 1711 | } |
| 1712 | } else { |
| 1713 | /* Last pkt in TX queue */ |
| 1714 | mwifiex_dbg(adapter, INFO, |
| 1715 | "info: %s: Last packet in Tx Queue.\n", |
| 1716 | __func__); |
| 1717 | |
| 1718 | if (MP_TX_AGGR_IN_PROGRESS(card)) { |
| 1719 | /* some packs in Aggr buf already */ |
| 1720 | f_send_aggr_buf = 1; |
| 1721 | |
| 1722 | if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) |
| 1723 | f_precopy_cur_buf = 1; |
| 1724 | else |
| 1725 | /* No room in Aggr buf, send it */ |
| 1726 | f_send_cur_buf = 1; |
| 1727 | } else { |
| 1728 | f_send_cur_buf = 1; |
| 1729 | } |
| 1730 | } |
| 1731 | |
| 1732 | if (f_precopy_cur_buf) { |
| 1733 | mwifiex_dbg(adapter, DATA, |
| 1734 | "data: %s: precopy current buffer\n", |
| 1735 | __func__); |
| 1736 | MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); |
| 1737 | |
| 1738 | if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) || |
| 1739 | mp_tx_aggr_port_limit_reached(card)) |
| 1740 | /* No more pkts allowed in Aggr buf, send it */ |
| 1741 | f_send_aggr_buf = 1; |
| 1742 | } |
| 1743 | |
| 1744 | if (f_send_aggr_buf) { |
| 1745 | mwifiex_dbg(adapter, DATA, |
| 1746 | "data: %s: send aggr buffer: %d %d\n", |
| 1747 | __func__, card->mpa_tx.start_port, |
| 1748 | card->mpa_tx.ports); |
| 1749 | if (card->supports_sdio_new_mode) { |
| 1750 | u32 port_count; |
| 1751 | int i; |
| 1752 | |
| 1753 | for (i = 0, port_count = 0; i < card->max_ports; i++) |
| 1754 | if (card->mpa_tx.ports & BIT(i)) |
| 1755 | port_count++; |
| 1756 | |
| 1757 | /* Writing data from "start_port + 0" to "start_port + |
| 1758 | * port_count -1", so decrease the count by 1 |
| 1759 | */ |
| 1760 | port_count--; |
| 1761 | mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | |
| 1762 | (port_count << 8)) + card->mpa_tx.start_port; |
| 1763 | } else { |
| 1764 | mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | |
| 1765 | (card->mpa_tx.ports << 4)) + |
| 1766 | card->mpa_tx.start_port; |
| 1767 | } |
| 1768 | |
| 1769 | ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf, |
| 1770 | card->mpa_tx.buf_len, mport); |
| 1771 | |
| 1772 | MP_TX_AGGR_BUF_RESET(card); |
| 1773 | } |
| 1774 | |
| 1775 | tx_curr_single: |
| 1776 | if (f_send_cur_buf) { |
| 1777 | mwifiex_dbg(adapter, DATA, |
| 1778 | "data: %s: send current buffer %d\n", |
| 1779 | __func__, port); |
| 1780 | ret = mwifiex_write_data_to_card(adapter, payload, pkt_len, |
| 1781 | adapter->ioport + port); |
| 1782 | } |
| 1783 | |
| 1784 | if (f_postcopy_cur_buf) { |
| 1785 | mwifiex_dbg(adapter, DATA, |
| 1786 | "data: %s: postcopy current buffer\n", |
| 1787 | __func__); |
| 1788 | MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); |
| 1789 | } |
| 1790 | |
| 1791 | return ret; |
| 1792 | } |
| 1793 | |
| 1794 | /* |
| 1795 | * This function downloads data from driver to card. |
| 1796 | * |
| 1797 | * Both commands and data packets are transferred to the card by this |
| 1798 | * function. |
| 1799 | * |
| 1800 | * This function adds the SDIO specific header to the front of the buffer |
| 1801 | * before transferring. The header contains the length of the packet and |
| 1802 | * the type. The firmware handles the packets based upon this set type. |
| 1803 | */ |
| 1804 | static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter, |
| 1805 | u8 type, struct sk_buff *skb, |
| 1806 | struct mwifiex_tx_param *tx_param) |
| 1807 | { |
| 1808 | struct sdio_mmc_card *card = adapter->card; |
| 1809 | int ret; |
| 1810 | u32 buf_block_len; |
| 1811 | u32 blk_size; |
| 1812 | u32 port = CTRL_PORT; |
| 1813 | u8 *payload = (u8 *)skb->data; |
| 1814 | u32 pkt_len = skb->len; |
| 1815 | |
| 1816 | /* Allocate buffer and copy payload */ |
| 1817 | blk_size = MWIFIEX_SDIO_BLOCK_SIZE; |
| 1818 | buf_block_len = (pkt_len + blk_size - 1) / blk_size; |
| 1819 | *(__le16 *)&payload[0] = cpu_to_le16((u16)pkt_len); |
| 1820 | *(__le16 *)&payload[2] = cpu_to_le16(type); |
| 1821 | |
| 1822 | /* |
| 1823 | * This is SDIO specific header |
| 1824 | * u16 length, |
| 1825 | * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1, |
| 1826 | * MWIFIEX_TYPE_EVENT = 3) |
| 1827 | */ |
| 1828 | if (type == MWIFIEX_TYPE_DATA) { |
| 1829 | ret = mwifiex_get_wr_port_data(adapter, &port); |
| 1830 | if (ret) { |
| 1831 | mwifiex_dbg(adapter, ERROR, |
| 1832 | "%s: no wr_port available\n", |
| 1833 | __func__); |
| 1834 | return ret; |
| 1835 | } |
| 1836 | } else { |
| 1837 | adapter->cmd_sent = true; |
| 1838 | /* Type must be MWIFIEX_TYPE_CMD */ |
| 1839 | |
| 1840 | if (pkt_len <= INTF_HEADER_LEN || |
| 1841 | pkt_len > MWIFIEX_UPLD_SIZE) |
| 1842 | mwifiex_dbg(adapter, ERROR, |
| 1843 | "%s: payload=%p, nb=%d\n", |
| 1844 | __func__, payload, pkt_len); |
| 1845 | |
| 1846 | if (card->supports_sdio_new_mode) |
| 1847 | port = CMD_PORT_SLCT; |
| 1848 | } |
| 1849 | |
| 1850 | /* Transfer data to card */ |
| 1851 | pkt_len = buf_block_len * blk_size; |
| 1852 | |
| 1853 | if (tx_param) |
| 1854 | ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, |
| 1855 | port, tx_param->next_pkt_len |
| 1856 | ); |
| 1857 | else |
| 1858 | ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, |
| 1859 | port, 0); |
| 1860 | |
| 1861 | if (ret) { |
| 1862 | if (type == MWIFIEX_TYPE_CMD) |
| 1863 | adapter->cmd_sent = false; |
| 1864 | if (type == MWIFIEX_TYPE_DATA) { |
| 1865 | adapter->data_sent = false; |
| 1866 | /* restore curr_wr_port in error cases */ |
| 1867 | card->curr_wr_port = port; |
| 1868 | card->mp_wr_bitmap |= (u32)(1 << card->curr_wr_port); |
| 1869 | } |
| 1870 | } else { |
| 1871 | if (type == MWIFIEX_TYPE_DATA) { |
| 1872 | if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port))) |
| 1873 | adapter->data_sent = true; |
| 1874 | else |
| 1875 | adapter->data_sent = false; |
| 1876 | } |
| 1877 | } |
| 1878 | |
| 1879 | return ret; |
| 1880 | } |
| 1881 | |
| 1882 | /* |
| 1883 | * This function allocates the MPA Tx and Rx buffers. |
| 1884 | */ |
| 1885 | static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter, |
| 1886 | u32 mpa_tx_buf_size, u32 mpa_rx_buf_size) |
| 1887 | { |
| 1888 | struct sdio_mmc_card *card = adapter->card; |
| 1889 | u32 rx_buf_size; |
| 1890 | int ret = 0; |
| 1891 | |
| 1892 | card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL); |
| 1893 | if (!card->mpa_tx.buf) { |
| 1894 | ret = -1; |
| 1895 | goto error; |
| 1896 | } |
| 1897 | |
| 1898 | card->mpa_tx.buf_size = mpa_tx_buf_size; |
| 1899 | |
| 1900 | rx_buf_size = max_t(u32, mpa_rx_buf_size, |
| 1901 | (u32)SDIO_MAX_AGGR_BUF_SIZE); |
| 1902 | card->mpa_rx.buf = kzalloc(rx_buf_size, GFP_KERNEL); |
| 1903 | if (!card->mpa_rx.buf) { |
| 1904 | ret = -1; |
| 1905 | goto error; |
| 1906 | } |
| 1907 | |
| 1908 | card->mpa_rx.buf_size = rx_buf_size; |
| 1909 | |
| 1910 | error: |
| 1911 | if (ret) { |
| 1912 | kfree(card->mpa_tx.buf); |
| 1913 | kfree(card->mpa_rx.buf); |
| 1914 | } |
| 1915 | |
| 1916 | return ret; |
| 1917 | } |
| 1918 | |
| 1919 | /* |
| 1920 | * This function unregisters the SDIO device. |
| 1921 | * |
| 1922 | * The SDIO IRQ is released, the function is disabled and driver |
| 1923 | * data is set to null. |
| 1924 | */ |
| 1925 | static void |
| 1926 | mwifiex_unregister_dev(struct mwifiex_adapter *adapter) |
| 1927 | { |
| 1928 | struct sdio_mmc_card *card = adapter->card; |
| 1929 | |
| 1930 | if (adapter->card) { |
| 1931 | sdio_claim_host(card->func); |
| 1932 | sdio_disable_func(card->func); |
| 1933 | sdio_release_host(card->func); |
| 1934 | } |
| 1935 | } |
| 1936 | |
| 1937 | /* |
| 1938 | * This function registers the SDIO device. |
| 1939 | * |
| 1940 | * SDIO IRQ is claimed, block size is set and driver data is initialized. |
| 1941 | */ |
| 1942 | static int mwifiex_register_dev(struct mwifiex_adapter *adapter) |
| 1943 | { |
| 1944 | int ret; |
| 1945 | struct sdio_mmc_card *card = adapter->card; |
| 1946 | struct sdio_func *func = card->func; |
| 1947 | |
| 1948 | /* save adapter pointer in card */ |
| 1949 | card->adapter = adapter; |
| 1950 | adapter->tx_buf_size = card->tx_buf_size; |
| 1951 | |
| 1952 | sdio_claim_host(func); |
| 1953 | |
| 1954 | /* Set block size */ |
| 1955 | ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE); |
| 1956 | sdio_release_host(func); |
| 1957 | if (ret) { |
| 1958 | mwifiex_dbg(adapter, ERROR, |
| 1959 | "cannot set SDIO block size\n"); |
| 1960 | return ret; |
| 1961 | } |
| 1962 | |
| 1963 | |
| 1964 | adapter->dev = &func->dev; |
| 1965 | |
| 1966 | strcpy(adapter->fw_name, card->firmware); |
| 1967 | adapter->mem_type_mapping_tbl = mem_type_mapping_tbl; |
| 1968 | adapter->num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl); |
| 1969 | |
| 1970 | return 0; |
| 1971 | } |
| 1972 | |
| 1973 | /* |
| 1974 | * This function initializes the SDIO driver. |
| 1975 | * |
| 1976 | * The following initializations steps are followed - |
| 1977 | * - Read the Host interrupt status register to acknowledge |
| 1978 | * the first interrupt got from bootloader |
| 1979 | * - Disable host interrupt mask register |
| 1980 | * - Get SDIO port |
| 1981 | * - Initialize SDIO variables in card |
| 1982 | * - Allocate MP registers |
| 1983 | * - Allocate MPA Tx and Rx buffers |
| 1984 | */ |
| 1985 | static int mwifiex_init_sdio(struct mwifiex_adapter *adapter) |
| 1986 | { |
| 1987 | struct sdio_mmc_card *card = adapter->card; |
| 1988 | const struct mwifiex_sdio_card_reg *reg = card->reg; |
| 1989 | int ret; |
| 1990 | u8 sdio_ireg; |
| 1991 | |
| 1992 | sdio_set_drvdata(card->func, card); |
| 1993 | |
| 1994 | /* |
| 1995 | * Read the host_int_status_reg for ACK the first interrupt got |
| 1996 | * from the bootloader. If we don't do this we get a interrupt |
| 1997 | * as soon as we register the irq. |
| 1998 | */ |
| 1999 | mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg); |
| 2000 | |
| 2001 | /* Get SDIO ioport */ |
| 2002 | mwifiex_init_sdio_ioport(adapter); |
| 2003 | |
| 2004 | /* Initialize SDIO variables in card */ |
| 2005 | card->mp_rd_bitmap = 0; |
| 2006 | card->mp_wr_bitmap = 0; |
| 2007 | card->curr_rd_port = reg->start_rd_port; |
| 2008 | card->curr_wr_port = reg->start_wr_port; |
| 2009 | |
| 2010 | card->mp_data_port_mask = reg->data_port_mask; |
| 2011 | |
| 2012 | card->mpa_tx.buf_len = 0; |
| 2013 | card->mpa_tx.pkt_cnt = 0; |
| 2014 | card->mpa_tx.start_port = 0; |
| 2015 | |
| 2016 | card->mpa_tx.enabled = 1; |
| 2017 | card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit; |
| 2018 | |
| 2019 | card->mpa_rx.buf_len = 0; |
| 2020 | card->mpa_rx.pkt_cnt = 0; |
| 2021 | card->mpa_rx.start_port = 0; |
| 2022 | |
| 2023 | card->mpa_rx.enabled = 1; |
| 2024 | card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit; |
| 2025 | |
| 2026 | /* Allocate buffers for SDIO MP-A */ |
| 2027 | card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL); |
| 2028 | if (!card->mp_regs) |
| 2029 | return -ENOMEM; |
| 2030 | |
| 2031 | /* Allocate skb pointer buffers */ |
| 2032 | card->mpa_rx.skb_arr = kzalloc((sizeof(void *)) * |
| 2033 | card->mp_agg_pkt_limit, GFP_KERNEL); |
| 2034 | card->mpa_rx.len_arr = kzalloc(sizeof(*card->mpa_rx.len_arr) * |
| 2035 | card->mp_agg_pkt_limit, GFP_KERNEL); |
| 2036 | ret = mwifiex_alloc_sdio_mpa_buffers(adapter, |
| 2037 | card->mp_tx_agg_buf_size, |
| 2038 | card->mp_rx_agg_buf_size); |
| 2039 | if (ret) { |
| 2040 | mwifiex_dbg(adapter, ERROR, |
| 2041 | "failed to alloc sdio mp-a buffers\n"); |
| 2042 | kfree(card->mp_regs); |
| 2043 | return -1; |
| 2044 | } |
| 2045 | |
| 2046 | adapter->auto_tdls = card->can_auto_tdls; |
| 2047 | adapter->ext_scan = card->can_ext_scan; |
| 2048 | return ret; |
| 2049 | } |
| 2050 | |
| 2051 | /* |
| 2052 | * This function resets the MPA Tx and Rx buffers. |
| 2053 | */ |
| 2054 | static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter) |
| 2055 | { |
| 2056 | struct sdio_mmc_card *card = adapter->card; |
| 2057 | |
| 2058 | MP_TX_AGGR_BUF_RESET(card); |
| 2059 | MP_RX_AGGR_BUF_RESET(card); |
| 2060 | } |
| 2061 | |
| 2062 | /* |
| 2063 | * This function cleans up the allocated card buffers. |
| 2064 | * |
| 2065 | * The following are freed by this function - |
| 2066 | * - MP registers |
| 2067 | * - MPA Tx buffer |
| 2068 | * - MPA Rx buffer |
| 2069 | */ |
| 2070 | static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter) |
| 2071 | { |
| 2072 | struct sdio_mmc_card *card = adapter->card; |
| 2073 | |
| 2074 | kfree(card->mp_regs); |
| 2075 | kfree(card->mpa_rx.skb_arr); |
| 2076 | kfree(card->mpa_rx.len_arr); |
| 2077 | kfree(card->mpa_tx.buf); |
| 2078 | kfree(card->mpa_rx.buf); |
| 2079 | sdio_set_drvdata(card->func, NULL); |
| 2080 | kfree(card); |
| 2081 | } |
| 2082 | |
| 2083 | /* |
| 2084 | * This function updates the MP end port in card. |
| 2085 | */ |
| 2086 | static void |
| 2087 | mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port) |
| 2088 | { |
| 2089 | struct sdio_mmc_card *card = adapter->card; |
| 2090 | const struct mwifiex_sdio_card_reg *reg = card->reg; |
| 2091 | int i; |
| 2092 | |
| 2093 | card->mp_end_port = port; |
| 2094 | |
| 2095 | card->mp_data_port_mask = reg->data_port_mask; |
| 2096 | |
| 2097 | if (reg->start_wr_port) { |
| 2098 | for (i = 1; i <= card->max_ports - card->mp_end_port; i++) |
| 2099 | card->mp_data_port_mask &= |
| 2100 | ~(1 << (card->max_ports - i)); |
| 2101 | } |
| 2102 | |
| 2103 | card->curr_wr_port = reg->start_wr_port; |
| 2104 | |
| 2105 | mwifiex_dbg(adapter, CMD, |
| 2106 | "cmd: mp_end_port %d, data port mask 0x%x\n", |
| 2107 | port, card->mp_data_port_mask); |
| 2108 | } |
| 2109 | |
| 2110 | static struct mwifiex_adapter *save_adapter; |
| 2111 | static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter) |
| 2112 | { |
| 2113 | struct sdio_mmc_card *card = adapter->card; |
| 2114 | struct mmc_host *target = card->func->card->host; |
| 2115 | |
| 2116 | /* The actual reset operation must be run outside of driver thread. |
| 2117 | * This is because mmc_remove_host() will cause the device to be |
| 2118 | * instantly destroyed, and the driver then needs to end its thread, |
| 2119 | * leading to a deadlock. |
| 2120 | * |
| 2121 | * We run it in a totally independent workqueue. |
| 2122 | */ |
| 2123 | |
| 2124 | mwifiex_dbg(adapter, WARN, "Resetting card...\n"); |
| 2125 | mmc_remove_host(target); |
| 2126 | /* 200ms delay is based on experiment with sdhci controller */ |
| 2127 | mdelay(200); |
| 2128 | target->rescan_entered = 0; /* rescan non-removable cards */ |
| 2129 | mmc_add_host(target); |
| 2130 | } |
| 2131 | |
| 2132 | /* This function read/write firmware */ |
| 2133 | static enum |
| 2134 | rdwr_status mwifiex_sdio_rdwr_firmware(struct mwifiex_adapter *adapter, |
| 2135 | u8 doneflag) |
| 2136 | { |
| 2137 | struct sdio_mmc_card *card = adapter->card; |
| 2138 | int ret, tries; |
| 2139 | u8 ctrl_data = 0; |
| 2140 | |
| 2141 | sdio_writeb(card->func, FW_DUMP_HOST_READY, card->reg->fw_dump_ctrl, |
| 2142 | &ret); |
| 2143 | if (ret) { |
| 2144 | mwifiex_dbg(adapter, ERROR, "SDIO Write ERR\n"); |
| 2145 | return RDWR_STATUS_FAILURE; |
| 2146 | } |
| 2147 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { |
| 2148 | ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl, |
| 2149 | &ret); |
| 2150 | if (ret) { |
| 2151 | mwifiex_dbg(adapter, ERROR, "SDIO read err\n"); |
| 2152 | return RDWR_STATUS_FAILURE; |
| 2153 | } |
| 2154 | if (ctrl_data == FW_DUMP_DONE) |
| 2155 | break; |
| 2156 | if (doneflag && ctrl_data == doneflag) |
| 2157 | return RDWR_STATUS_DONE; |
| 2158 | if (ctrl_data != FW_DUMP_HOST_READY) { |
| 2159 | mwifiex_dbg(adapter, WARN, |
| 2160 | "The ctrl reg was changed, re-try again!\n"); |
| 2161 | sdio_writeb(card->func, FW_DUMP_HOST_READY, |
| 2162 | card->reg->fw_dump_ctrl, &ret); |
| 2163 | if (ret) { |
| 2164 | mwifiex_dbg(adapter, ERROR, "SDIO write err\n"); |
| 2165 | return RDWR_STATUS_FAILURE; |
| 2166 | } |
| 2167 | } |
| 2168 | usleep_range(100, 200); |
| 2169 | } |
| 2170 | if (ctrl_data == FW_DUMP_HOST_READY) { |
| 2171 | mwifiex_dbg(adapter, ERROR, |
| 2172 | "Fail to pull ctrl_data\n"); |
| 2173 | return RDWR_STATUS_FAILURE; |
| 2174 | } |
| 2175 | |
| 2176 | return RDWR_STATUS_SUCCESS; |
| 2177 | } |
| 2178 | |
| 2179 | /* This function dump firmware memory to file */ |
| 2180 | static void mwifiex_sdio_fw_dump_work(struct mwifiex_adapter *adapter) |
| 2181 | { |
| 2182 | struct sdio_mmc_card *card = adapter->card; |
| 2183 | int ret = 0; |
| 2184 | unsigned int reg, reg_start, reg_end; |
| 2185 | u8 *dbg_ptr, *end_ptr, dump_num, idx, i, read_reg, doneflag = 0; |
| 2186 | enum rdwr_status stat; |
| 2187 | u32 memory_size; |
| 2188 | static char *env[] = { "DRIVER=mwifiex_sdio", "EVENT=fw_dump", NULL }; |
| 2189 | |
| 2190 | mwifiex_dump_drv_info(adapter); |
| 2191 | |
| 2192 | if (!card->can_dump_fw) |
| 2193 | return; |
| 2194 | |
| 2195 | for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) { |
| 2196 | struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx]; |
| 2197 | |
| 2198 | if (entry->mem_ptr) { |
| 2199 | vfree(entry->mem_ptr); |
| 2200 | entry->mem_ptr = NULL; |
| 2201 | } |
| 2202 | entry->mem_size = 0; |
| 2203 | } |
| 2204 | |
| 2205 | mwifiex_pm_wakeup_card(adapter); |
| 2206 | sdio_claim_host(card->func); |
| 2207 | |
| 2208 | mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n"); |
| 2209 | |
| 2210 | stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag); |
| 2211 | if (stat == RDWR_STATUS_FAILURE) |
| 2212 | goto done; |
| 2213 | |
| 2214 | reg = card->reg->fw_dump_start; |
| 2215 | /* Read the number of the memories which will dump */ |
| 2216 | dump_num = sdio_readb(card->func, reg, &ret); |
| 2217 | if (ret) { |
| 2218 | mwifiex_dbg(adapter, ERROR, "SDIO read memory length err\n"); |
| 2219 | goto done; |
| 2220 | } |
| 2221 | |
| 2222 | /* Read the length of every memory which will dump */ |
| 2223 | for (idx = 0; idx < dump_num; idx++) { |
| 2224 | struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx]; |
| 2225 | |
| 2226 | stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag); |
| 2227 | if (stat == RDWR_STATUS_FAILURE) |
| 2228 | goto done; |
| 2229 | |
| 2230 | memory_size = 0; |
| 2231 | reg = card->reg->fw_dump_start; |
| 2232 | for (i = 0; i < 4; i++) { |
| 2233 | read_reg = sdio_readb(card->func, reg, &ret); |
| 2234 | if (ret) { |
| 2235 | mwifiex_dbg(adapter, ERROR, "SDIO read err\n"); |
| 2236 | goto done; |
| 2237 | } |
| 2238 | memory_size |= (read_reg << i*8); |
| 2239 | reg++; |
| 2240 | } |
| 2241 | |
| 2242 | if (memory_size == 0) { |
| 2243 | mwifiex_dbg(adapter, DUMP, "Firmware dump Finished!\n"); |
| 2244 | ret = mwifiex_write_reg(adapter, |
| 2245 | card->reg->fw_dump_ctrl, |
| 2246 | FW_DUMP_READ_DONE); |
| 2247 | if (ret) { |
| 2248 | mwifiex_dbg(adapter, ERROR, "SDIO write err\n"); |
| 2249 | return; |
| 2250 | } |
| 2251 | break; |
| 2252 | } |
| 2253 | |
| 2254 | mwifiex_dbg(adapter, DUMP, |
| 2255 | "%s_SIZE=0x%x\n", entry->mem_name, memory_size); |
| 2256 | entry->mem_ptr = vmalloc(memory_size + 1); |
| 2257 | entry->mem_size = memory_size; |
| 2258 | if (!entry->mem_ptr) { |
| 2259 | mwifiex_dbg(adapter, ERROR, "Vmalloc %s failed\n", |
| 2260 | entry->mem_name); |
| 2261 | goto done; |
| 2262 | } |
| 2263 | dbg_ptr = entry->mem_ptr; |
| 2264 | end_ptr = dbg_ptr + memory_size; |
| 2265 | |
| 2266 | doneflag = entry->done_flag; |
| 2267 | mwifiex_dbg(adapter, DUMP, |
| 2268 | "Start %s output, please wait...\n", |
| 2269 | entry->mem_name); |
| 2270 | |
| 2271 | do { |
| 2272 | stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag); |
| 2273 | if (stat == RDWR_STATUS_FAILURE) |
| 2274 | goto done; |
| 2275 | |
| 2276 | reg_start = card->reg->fw_dump_start; |
| 2277 | reg_end = card->reg->fw_dump_end; |
| 2278 | for (reg = reg_start; reg <= reg_end; reg++) { |
| 2279 | *dbg_ptr = sdio_readb(card->func, reg, &ret); |
| 2280 | if (ret) { |
| 2281 | mwifiex_dbg(adapter, ERROR, |
| 2282 | "SDIO read err\n"); |
| 2283 | goto done; |
| 2284 | } |
| 2285 | if (dbg_ptr < end_ptr) |
| 2286 | dbg_ptr++; |
| 2287 | else |
| 2288 | mwifiex_dbg(adapter, ERROR, |
| 2289 | "Allocated buf not enough\n"); |
| 2290 | } |
| 2291 | |
| 2292 | if (stat != RDWR_STATUS_DONE) |
| 2293 | continue; |
| 2294 | |
| 2295 | mwifiex_dbg(adapter, DUMP, "%s done: size=0x%tx\n", |
| 2296 | entry->mem_name, dbg_ptr - entry->mem_ptr); |
| 2297 | break; |
| 2298 | } while (1); |
| 2299 | } |
| 2300 | mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n"); |
| 2301 | |
| 2302 | kobject_uevent_env(&adapter->wiphy->dev.kobj, KOBJ_CHANGE, env); |
| 2303 | |
| 2304 | done: |
| 2305 | sdio_release_host(card->func); |
| 2306 | adapter->curr_mem_idx = 0; |
| 2307 | } |
| 2308 | |
| 2309 | static void mwifiex_sdio_work(struct work_struct *work) |
| 2310 | { |
| 2311 | if (test_and_clear_bit(MWIFIEX_IFACE_WORK_FW_DUMP, |
| 2312 | &iface_work_flags)) |
| 2313 | mwifiex_sdio_fw_dump_work(save_adapter); |
| 2314 | if (test_and_clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET, |
| 2315 | &iface_work_flags)) |
| 2316 | mwifiex_sdio_card_reset_work(save_adapter); |
| 2317 | } |
| 2318 | |
| 2319 | static DECLARE_WORK(sdio_work, mwifiex_sdio_work); |
| 2320 | /* This function resets the card */ |
| 2321 | static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter) |
| 2322 | { |
| 2323 | save_adapter = adapter; |
| 2324 | if (test_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags)) |
| 2325 | return; |
| 2326 | |
| 2327 | set_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags); |
| 2328 | |
| 2329 | schedule_work(&sdio_work); |
| 2330 | } |
| 2331 | |
| 2332 | /* This function dumps FW information */ |
| 2333 | static void mwifiex_sdio_fw_dump(struct mwifiex_adapter *adapter) |
| 2334 | { |
| 2335 | save_adapter = adapter; |
| 2336 | if (test_bit(MWIFIEX_IFACE_WORK_FW_DUMP, &iface_work_flags)) |
| 2337 | return; |
| 2338 | |
| 2339 | set_bit(MWIFIEX_IFACE_WORK_FW_DUMP, &iface_work_flags); |
| 2340 | schedule_work(&sdio_work); |
| 2341 | } |
| 2342 | |
| 2343 | /* Function to dump SDIO function registers and SDIO scratch registers in case |
| 2344 | * of FW crash |
| 2345 | */ |
| 2346 | static int |
| 2347 | mwifiex_sdio_reg_dump(struct mwifiex_adapter *adapter, char *drv_buf) |
| 2348 | { |
| 2349 | char *p = drv_buf; |
| 2350 | struct sdio_mmc_card *cardp = adapter->card; |
| 2351 | int ret = 0; |
| 2352 | u8 count, func, data, index = 0, size = 0; |
| 2353 | u8 reg, reg_start, reg_end; |
| 2354 | char buf[256], *ptr; |
| 2355 | |
| 2356 | if (!p) |
| 2357 | return 0; |
| 2358 | |
| 2359 | mwifiex_dbg(adapter, MSG, "SDIO register dump start\n"); |
| 2360 | |
| 2361 | mwifiex_pm_wakeup_card(adapter); |
| 2362 | |
| 2363 | sdio_claim_host(cardp->func); |
| 2364 | |
| 2365 | for (count = 0; count < 5; count++) { |
| 2366 | memset(buf, 0, sizeof(buf)); |
| 2367 | ptr = buf; |
| 2368 | |
| 2369 | switch (count) { |
| 2370 | case 0: |
| 2371 | /* Read the registers of SDIO function0 */ |
| 2372 | func = count; |
| 2373 | reg_start = 0; |
| 2374 | reg_end = 9; |
| 2375 | break; |
| 2376 | case 1: |
| 2377 | /* Read the registers of SDIO function1 */ |
| 2378 | func = count; |
| 2379 | reg_start = cardp->reg->func1_dump_reg_start; |
| 2380 | reg_end = cardp->reg->func1_dump_reg_end; |
| 2381 | break; |
| 2382 | case 2: |
| 2383 | index = 0; |
| 2384 | func = 1; |
| 2385 | reg_start = cardp->reg->func1_spec_reg_table[index++]; |
| 2386 | size = cardp->reg->func1_spec_reg_num; |
| 2387 | reg_end = cardp->reg->func1_spec_reg_table[size-1]; |
| 2388 | break; |
| 2389 | default: |
| 2390 | /* Read the scratch registers of SDIO function1 */ |
| 2391 | if (count == 4) |
| 2392 | mdelay(100); |
| 2393 | func = 1; |
| 2394 | reg_start = cardp->reg->func1_scratch_reg; |
| 2395 | reg_end = reg_start + MWIFIEX_SDIO_SCRATCH_SIZE; |
| 2396 | } |
| 2397 | |
| 2398 | if (count != 2) |
| 2399 | ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ", |
| 2400 | func, reg_start, reg_end); |
| 2401 | else |
| 2402 | ptr += sprintf(ptr, "SDIO Func%d: ", func); |
| 2403 | |
| 2404 | for (reg = reg_start; reg <= reg_end;) { |
| 2405 | if (func == 0) |
| 2406 | data = sdio_f0_readb(cardp->func, reg, &ret); |
| 2407 | else |
| 2408 | data = sdio_readb(cardp->func, reg, &ret); |
| 2409 | |
| 2410 | if (count == 2) |
| 2411 | ptr += sprintf(ptr, "(%#x) ", reg); |
| 2412 | if (!ret) { |
| 2413 | ptr += sprintf(ptr, "%02x ", data); |
| 2414 | } else { |
| 2415 | ptr += sprintf(ptr, "ERR"); |
| 2416 | break; |
| 2417 | } |
| 2418 | |
| 2419 | if (count == 2 && reg < reg_end) |
| 2420 | reg = cardp->reg->func1_spec_reg_table[index++]; |
| 2421 | else |
| 2422 | reg++; |
| 2423 | } |
| 2424 | |
| 2425 | mwifiex_dbg(adapter, MSG, "%s\n", buf); |
| 2426 | p += sprintf(p, "%s\n", buf); |
| 2427 | } |
| 2428 | |
| 2429 | sdio_release_host(cardp->func); |
| 2430 | |
| 2431 | mwifiex_dbg(adapter, MSG, "SDIO register dump end\n"); |
| 2432 | |
| 2433 | return p - drv_buf; |
| 2434 | } |
| 2435 | |
| 2436 | static struct mwifiex_if_ops sdio_ops = { |
| 2437 | .init_if = mwifiex_init_sdio, |
| 2438 | .cleanup_if = mwifiex_cleanup_sdio, |
| 2439 | .check_fw_status = mwifiex_check_fw_status, |
| 2440 | .prog_fw = mwifiex_prog_fw_w_helper, |
| 2441 | .register_dev = mwifiex_register_dev, |
| 2442 | .unregister_dev = mwifiex_unregister_dev, |
| 2443 | .enable_int = mwifiex_sdio_enable_host_int, |
| 2444 | .disable_int = mwifiex_sdio_disable_host_int, |
| 2445 | .process_int_status = mwifiex_process_int_status, |
| 2446 | .host_to_card = mwifiex_sdio_host_to_card, |
| 2447 | .wakeup = mwifiex_pm_wakeup_card, |
| 2448 | .wakeup_complete = mwifiex_pm_wakeup_card_complete, |
| 2449 | |
| 2450 | /* SDIO specific */ |
| 2451 | .update_mp_end_port = mwifiex_update_mp_end_port, |
| 2452 | .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf, |
| 2453 | .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete, |
| 2454 | .event_complete = mwifiex_sdio_event_complete, |
| 2455 | .card_reset = mwifiex_sdio_card_reset, |
| 2456 | .fw_dump = mwifiex_sdio_fw_dump, |
| 2457 | .reg_dump = mwifiex_sdio_reg_dump, |
| 2458 | .deaggr_pkt = mwifiex_deaggr_sdio_pkt, |
| 2459 | }; |
| 2460 | |
| 2461 | /* |
| 2462 | * This function initializes the SDIO driver. |
| 2463 | * |
| 2464 | * This initiates the semaphore and registers the device with |
| 2465 | * SDIO bus. |
| 2466 | */ |
| 2467 | static int |
| 2468 | mwifiex_sdio_init_module(void) |
| 2469 | { |
| 2470 | sema_init(&add_remove_card_sem, 1); |
| 2471 | |
| 2472 | /* Clear the flag in case user removes the card. */ |
| 2473 | user_rmmod = 0; |
| 2474 | |
| 2475 | return sdio_register_driver(&mwifiex_sdio); |
| 2476 | } |
| 2477 | |
| 2478 | /* |
| 2479 | * This function cleans up the SDIO driver. |
| 2480 | * |
| 2481 | * The following major steps are followed for cleanup - |
| 2482 | * - Resume the device if its suspended |
| 2483 | * - Disconnect the device if connected |
| 2484 | * - Shutdown the firmware |
| 2485 | * - Unregister the device from SDIO bus. |
| 2486 | */ |
| 2487 | static void |
| 2488 | mwifiex_sdio_cleanup_module(void) |
| 2489 | { |
| 2490 | if (!down_interruptible(&add_remove_card_sem)) |
| 2491 | up(&add_remove_card_sem); |
| 2492 | |
| 2493 | /* Set the flag as user is removing this module. */ |
| 2494 | user_rmmod = 1; |
| 2495 | cancel_work_sync(&sdio_work); |
| 2496 | |
| 2497 | sdio_unregister_driver(&mwifiex_sdio); |
| 2498 | } |
| 2499 | |
| 2500 | module_init(mwifiex_sdio_init_module); |
| 2501 | module_exit(mwifiex_sdio_cleanup_module); |
| 2502 | |
| 2503 | MODULE_AUTHOR("Marvell International Ltd."); |
| 2504 | MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION); |
| 2505 | MODULE_VERSION(SDIO_VERSION); |
| 2506 | MODULE_LICENSE("GPL v2"); |
| 2507 | MODULE_FIRMWARE(SD8786_DEFAULT_FW_NAME); |
| 2508 | MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME); |
| 2509 | MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME); |
| 2510 | MODULE_FIRMWARE(SD8897_DEFAULT_FW_NAME); |
| 2511 | MODULE_FIRMWARE(SD8887_DEFAULT_FW_NAME); |