Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Marvell Wireless LAN device driver: SDIO specific handling |
| 3 | * |
| 4 | * Copyright (C) 2011, 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 | |
Amitkumar Karwar | 287546d | 2011-06-08 20:39:20 +0530 | [diff] [blame] | 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 | |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 49 | static struct mwifiex_if_ops sdio_ops; |
| 50 | |
| 51 | static struct semaphore add_remove_card_sem; |
| 52 | |
Amitkumar Karwar | 287546d | 2011-06-08 20:39:20 +0530 | [diff] [blame] | 53 | static int mwifiex_sdio_resume(struct device *dev); |
| 54 | |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 55 | /* |
| 56 | * SDIO probe. |
| 57 | * |
| 58 | * This function probes an mwifiex device and registers it. It allocates |
| 59 | * the card structure, enables SDIO function number and initiates the |
| 60 | * device registration and initialization procedure by adding a logical |
| 61 | * interface. |
| 62 | */ |
| 63 | static int |
| 64 | mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id) |
| 65 | { |
Yogesh Ashok Powar | 270e58e | 2011-05-03 20:11:46 -0700 | [diff] [blame] | 66 | int ret; |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 67 | struct sdio_mmc_card *card = NULL; |
| 68 | |
| 69 | pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n", |
| 70 | func->vendor, func->device, func->class, func->num); |
| 71 | |
| 72 | card = kzalloc(sizeof(struct sdio_mmc_card), GFP_KERNEL); |
| 73 | if (!card) { |
| 74 | pr_err("%s: failed to alloc memory\n", __func__); |
| 75 | return -ENOMEM; |
| 76 | } |
| 77 | |
| 78 | card->func = func; |
| 79 | |
| 80 | func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE; |
| 81 | |
| 82 | sdio_claim_host(func); |
| 83 | ret = sdio_enable_func(func); |
| 84 | sdio_release_host(func); |
| 85 | |
| 86 | if (ret) { |
| 87 | pr_err("%s: failed to enable function\n", __func__); |
Christoph Fritz | b53575e | 2011-05-08 22:50:09 +0200 | [diff] [blame] | 88 | kfree(card); |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 89 | return -EIO; |
| 90 | } |
| 91 | |
| 92 | if (mwifiex_add_card(card, &add_remove_card_sem, &sdio_ops)) { |
| 93 | pr_err("%s: add card failed\n", __func__); |
| 94 | kfree(card); |
| 95 | sdio_claim_host(func); |
| 96 | ret = sdio_disable_func(func); |
| 97 | sdio_release_host(func); |
| 98 | ret = -1; |
| 99 | } |
| 100 | |
| 101 | return ret; |
| 102 | } |
| 103 | |
| 104 | /* |
| 105 | * SDIO remove. |
| 106 | * |
| 107 | * This function removes the interface and frees up the card structure. |
| 108 | */ |
| 109 | static void |
| 110 | mwifiex_sdio_remove(struct sdio_func *func) |
| 111 | { |
| 112 | struct sdio_mmc_card *card; |
Amitkumar Karwar | 287546d | 2011-06-08 20:39:20 +0530 | [diff] [blame] | 113 | struct mwifiex_adapter *adapter; |
| 114 | int i; |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 115 | |
| 116 | pr_debug("info: SDIO func num=%d\n", func->num); |
| 117 | |
Amitkumar Karwar | 287546d | 2011-06-08 20:39:20 +0530 | [diff] [blame] | 118 | card = sdio_get_drvdata(func); |
| 119 | if (!card) |
| 120 | return; |
| 121 | |
| 122 | adapter = card->adapter; |
| 123 | if (!adapter || !adapter->priv_num) |
| 124 | return; |
| 125 | |
| 126 | if (user_rmmod) { |
| 127 | if (adapter->is_suspended) |
| 128 | mwifiex_sdio_resume(adapter->dev); |
| 129 | |
| 130 | for (i = 0; i < adapter->priv_num; i++) |
| 131 | if ((GET_BSS_ROLE(adapter->priv[i]) == |
| 132 | MWIFIEX_BSS_ROLE_STA) && |
| 133 | adapter->priv[i]->media_connected) |
| 134 | mwifiex_deauthenticate(adapter->priv[i], NULL); |
| 135 | |
| 136 | mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter, |
| 137 | MWIFIEX_BSS_ROLE_ANY), |
| 138 | MWIFIEX_FUNC_SHUTDOWN); |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 139 | } |
Amitkumar Karwar | 287546d | 2011-06-08 20:39:20 +0530 | [diff] [blame] | 140 | |
| 141 | mwifiex_remove_card(card->adapter, &add_remove_card_sem); |
| 142 | kfree(card); |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 143 | } |
| 144 | |
| 145 | /* |
| 146 | * SDIO suspend. |
| 147 | * |
| 148 | * Kernel needs to suspend all functions separately. Therefore all |
| 149 | * registered functions must have drivers with suspend and resume |
| 150 | * methods. Failing that the kernel simply removes the whole card. |
| 151 | * |
| 152 | * If already not suspended, this function allocates and sends a host |
| 153 | * sleep activate request to the firmware and turns off the traffic. |
| 154 | */ |
| 155 | static int mwifiex_sdio_suspend(struct device *dev) |
| 156 | { |
| 157 | struct sdio_func *func = dev_to_sdio_func(dev); |
| 158 | struct sdio_mmc_card *card; |
Yogesh Ashok Powar | 270e58e | 2011-05-03 20:11:46 -0700 | [diff] [blame] | 159 | struct mwifiex_adapter *adapter; |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 160 | mmc_pm_flag_t pm_flag = 0; |
| 161 | int hs_actived = 0; |
| 162 | int i; |
| 163 | int ret = 0; |
| 164 | |
| 165 | if (func) { |
| 166 | pm_flag = sdio_get_host_pm_caps(func); |
| 167 | pr_debug("cmd: %s: suspend: PM flag = 0x%x\n", |
| 168 | sdio_func_id(func), pm_flag); |
| 169 | if (!(pm_flag & MMC_PM_KEEP_POWER)) { |
| 170 | pr_err("%s: cannot remain alive while host is" |
| 171 | " suspended\n", sdio_func_id(func)); |
| 172 | return -ENOSYS; |
| 173 | } |
| 174 | |
| 175 | card = sdio_get_drvdata(func); |
| 176 | if (!card || !card->adapter) { |
| 177 | pr_err("suspend: invalid card or adapter\n"); |
| 178 | return 0; |
| 179 | } |
| 180 | } else { |
| 181 | pr_err("suspend: sdio_func is not specified\n"); |
| 182 | return 0; |
| 183 | } |
| 184 | |
| 185 | adapter = card->adapter; |
| 186 | |
| 187 | /* Enable the Host Sleep */ |
| 188 | hs_actived = mwifiex_enable_hs(adapter); |
| 189 | if (hs_actived) { |
| 190 | pr_debug("cmd: suspend with MMC_PM_KEEP_POWER\n"); |
| 191 | ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); |
| 192 | } |
| 193 | |
| 194 | /* Indicate device suspended */ |
| 195 | adapter->is_suspended = true; |
| 196 | |
| 197 | for (i = 0; i < adapter->priv_num; i++) |
| 198 | netif_carrier_off(adapter->priv[i]->netdev); |
| 199 | |
| 200 | return ret; |
| 201 | } |
| 202 | |
| 203 | /* |
| 204 | * SDIO resume. |
| 205 | * |
| 206 | * Kernel needs to suspend all functions separately. Therefore all |
| 207 | * registered functions must have drivers with suspend and resume |
| 208 | * methods. Failing that the kernel simply removes the whole card. |
| 209 | * |
| 210 | * If already not resumed, this function turns on the traffic and |
| 211 | * sends a host sleep cancel request to the firmware. |
| 212 | */ |
| 213 | static int mwifiex_sdio_resume(struct device *dev) |
| 214 | { |
| 215 | struct sdio_func *func = dev_to_sdio_func(dev); |
| 216 | struct sdio_mmc_card *card; |
Yogesh Ashok Powar | 270e58e | 2011-05-03 20:11:46 -0700 | [diff] [blame] | 217 | struct mwifiex_adapter *adapter; |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 218 | mmc_pm_flag_t pm_flag = 0; |
| 219 | int i; |
| 220 | |
| 221 | if (func) { |
| 222 | pm_flag = sdio_get_host_pm_caps(func); |
| 223 | card = sdio_get_drvdata(func); |
| 224 | if (!card || !card->adapter) { |
| 225 | pr_err("resume: invalid card or adapter\n"); |
| 226 | return 0; |
| 227 | } |
| 228 | } else { |
| 229 | pr_err("resume: sdio_func is not specified\n"); |
| 230 | return 0; |
| 231 | } |
| 232 | |
| 233 | adapter = card->adapter; |
| 234 | |
| 235 | if (!adapter->is_suspended) { |
| 236 | dev_warn(adapter->dev, "device already resumed\n"); |
| 237 | return 0; |
| 238 | } |
| 239 | |
| 240 | adapter->is_suspended = false; |
| 241 | |
| 242 | for (i = 0; i < adapter->priv_num; i++) |
| 243 | if (adapter->priv[i]->media_connected) |
| 244 | netif_carrier_on(adapter->priv[i]->netdev); |
| 245 | |
| 246 | /* Disable Host Sleep */ |
| 247 | mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA), |
Amitkumar Karwar | 600f5d9 | 2011-04-13 17:27:06 -0700 | [diff] [blame] | 248 | MWIFIEX_ASYNC_CMD); |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 249 | |
| 250 | return 0; |
| 251 | } |
| 252 | |
| 253 | /* Device ID for SD8787 */ |
| 254 | #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119) |
| 255 | |
| 256 | /* WLAN IDs */ |
| 257 | static const struct sdio_device_id mwifiex_ids[] = { |
| 258 | {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787)}, |
| 259 | {}, |
| 260 | }; |
| 261 | |
| 262 | MODULE_DEVICE_TABLE(sdio, mwifiex_ids); |
| 263 | |
| 264 | static const struct dev_pm_ops mwifiex_sdio_pm_ops = { |
| 265 | .suspend = mwifiex_sdio_suspend, |
| 266 | .resume = mwifiex_sdio_resume, |
| 267 | }; |
| 268 | |
| 269 | static struct sdio_driver mwifiex_sdio = { |
| 270 | .name = "mwifiex_sdio", |
| 271 | .id_table = mwifiex_ids, |
| 272 | .probe = mwifiex_sdio_probe, |
| 273 | .remove = mwifiex_sdio_remove, |
| 274 | .drv = { |
| 275 | .owner = THIS_MODULE, |
| 276 | .pm = &mwifiex_sdio_pm_ops, |
| 277 | } |
| 278 | }; |
| 279 | |
| 280 | /* |
| 281 | * This function writes data into SDIO card register. |
| 282 | */ |
| 283 | static int |
| 284 | mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u32 data) |
| 285 | { |
| 286 | struct sdio_mmc_card *card = adapter->card; |
| 287 | int ret = -1; |
| 288 | |
| 289 | sdio_claim_host(card->func); |
| 290 | sdio_writeb(card->func, (u8) data, reg, &ret); |
| 291 | sdio_release_host(card->func); |
| 292 | |
| 293 | return ret; |
| 294 | } |
| 295 | |
| 296 | /* |
| 297 | * This function reads data from SDIO card register. |
| 298 | */ |
| 299 | static int |
| 300 | mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u32 *data) |
| 301 | { |
| 302 | struct sdio_mmc_card *card = adapter->card; |
| 303 | int ret = -1; |
| 304 | u8 val; |
| 305 | |
| 306 | sdio_claim_host(card->func); |
| 307 | val = sdio_readb(card->func, reg, &ret); |
| 308 | sdio_release_host(card->func); |
| 309 | |
| 310 | *data = val; |
| 311 | |
| 312 | return ret; |
| 313 | } |
| 314 | |
| 315 | /* |
| 316 | * This function writes multiple data into SDIO card memory. |
| 317 | * |
| 318 | * This does not work in suspended mode. |
| 319 | */ |
| 320 | static int |
| 321 | mwifiex_write_data_sync(struct mwifiex_adapter *adapter, |
Amitkumar Karwar | 572e8f3 | 2011-04-13 17:27:08 -0700 | [diff] [blame] | 322 | u8 *buffer, u32 pkt_len, u32 port) |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 323 | { |
| 324 | struct sdio_mmc_card *card = adapter->card; |
| 325 | int ret = -1; |
| 326 | u8 blk_mode = |
| 327 | (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE; |
| 328 | u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; |
| 329 | u32 blk_cnt = |
| 330 | (blk_mode == |
| 331 | BLOCK_MODE) ? (pkt_len / |
| 332 | MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len; |
| 333 | u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); |
| 334 | |
| 335 | if (adapter->is_suspended) { |
| 336 | dev_err(adapter->dev, |
| 337 | "%s: not allowed while suspended\n", __func__); |
| 338 | return -1; |
| 339 | } |
| 340 | |
| 341 | sdio_claim_host(card->func); |
| 342 | |
| 343 | if (!sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size)) |
| 344 | ret = 0; |
| 345 | |
| 346 | sdio_release_host(card->func); |
| 347 | |
| 348 | return ret; |
| 349 | } |
| 350 | |
| 351 | /* |
| 352 | * This function reads multiple data from SDIO card memory. |
| 353 | */ |
Amitkumar Karwar | 572e8f3 | 2011-04-13 17:27:08 -0700 | [diff] [blame] | 354 | static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer, |
| 355 | u32 len, u32 port, u8 claim) |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 356 | { |
| 357 | struct sdio_mmc_card *card = adapter->card; |
| 358 | int ret = -1; |
| 359 | u8 blk_mode = |
| 360 | (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE; |
| 361 | u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; |
| 362 | u32 blk_cnt = |
| 363 | (blk_mode == |
| 364 | BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE) : len; |
| 365 | u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); |
| 366 | |
| 367 | if (claim) |
| 368 | sdio_claim_host(card->func); |
| 369 | |
| 370 | if (!sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size)) |
| 371 | ret = 0; |
| 372 | |
| 373 | if (claim) |
| 374 | sdio_release_host(card->func); |
| 375 | |
| 376 | return ret; |
| 377 | } |
| 378 | |
| 379 | /* |
| 380 | * This function wakes up the card. |
| 381 | * |
| 382 | * A host power up command is written to the card configuration |
| 383 | * register to wake up the card. |
| 384 | */ |
| 385 | static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) |
| 386 | { |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 387 | dev_dbg(adapter->dev, "event: wakeup device...\n"); |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 388 | |
Yogesh Ashok Powar | 636c459 | 2011-04-15 20:50:40 -0700 | [diff] [blame] | 389 | return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP); |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 390 | } |
| 391 | |
| 392 | /* |
| 393 | * This function is called after the card has woken up. |
| 394 | * |
| 395 | * The card configuration register is reset. |
| 396 | */ |
| 397 | static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter) |
| 398 | { |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 399 | dev_dbg(adapter->dev, "cmd: wakeup device completed\n"); |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 400 | |
Yogesh Ashok Powar | 636c459 | 2011-04-15 20:50:40 -0700 | [diff] [blame] | 401 | return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0); |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 402 | } |
| 403 | |
| 404 | /* |
| 405 | * This function initializes the IO ports. |
| 406 | * |
| 407 | * The following operations are performed - |
| 408 | * - Read the IO ports (0, 1 and 2) |
| 409 | * - Set host interrupt Reset-To-Read to clear |
| 410 | * - Set auto re-enable interrupt |
| 411 | */ |
| 412 | static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter) |
| 413 | { |
| 414 | u32 reg; |
| 415 | |
| 416 | adapter->ioport = 0; |
| 417 | |
| 418 | /* Read the IO port */ |
| 419 | if (!mwifiex_read_reg(adapter, IO_PORT_0_REG, ®)) |
| 420 | adapter->ioport |= (reg & 0xff); |
| 421 | else |
| 422 | return -1; |
| 423 | |
| 424 | if (!mwifiex_read_reg(adapter, IO_PORT_1_REG, ®)) |
| 425 | adapter->ioport |= ((reg & 0xff) << 8); |
| 426 | else |
| 427 | return -1; |
| 428 | |
| 429 | if (!mwifiex_read_reg(adapter, IO_PORT_2_REG, ®)) |
| 430 | adapter->ioport |= ((reg & 0xff) << 16); |
| 431 | else |
| 432 | return -1; |
| 433 | |
| 434 | pr_debug("info: SDIO FUNC1 IO port: %#x\n", adapter->ioport); |
| 435 | |
| 436 | /* Set Host interrupt reset to read to clear */ |
| 437 | if (!mwifiex_read_reg(adapter, HOST_INT_RSR_REG, ®)) |
| 438 | mwifiex_write_reg(adapter, HOST_INT_RSR_REG, |
| 439 | reg | SDIO_INT_MASK); |
| 440 | else |
| 441 | return -1; |
| 442 | |
| 443 | /* Dnld/Upld ready set to auto reset */ |
| 444 | if (!mwifiex_read_reg(adapter, CARD_MISC_CFG_REG, ®)) |
| 445 | mwifiex_write_reg(adapter, CARD_MISC_CFG_REG, |
| 446 | reg | AUTO_RE_ENABLE_INT); |
| 447 | else |
| 448 | return -1; |
| 449 | |
| 450 | return 0; |
| 451 | } |
| 452 | |
| 453 | /* |
| 454 | * This function sends data to the card. |
| 455 | */ |
| 456 | static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter, |
| 457 | u8 *payload, u32 pkt_len, u32 port) |
| 458 | { |
| 459 | u32 i = 0; |
Yogesh Ashok Powar | 270e58e | 2011-05-03 20:11:46 -0700 | [diff] [blame] | 460 | int ret; |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 461 | |
| 462 | do { |
Amitkumar Karwar | 572e8f3 | 2011-04-13 17:27:08 -0700 | [diff] [blame] | 463 | ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port); |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 464 | if (ret) { |
| 465 | i++; |
| 466 | dev_err(adapter->dev, "host_to_card, write iomem" |
| 467 | " (%d) failed: %d\n", i, ret); |
| 468 | if (mwifiex_write_reg(adapter, |
| 469 | CONFIGURATION_REG, 0x04)) |
| 470 | dev_err(adapter->dev, "write CFG reg failed\n"); |
| 471 | |
| 472 | ret = -1; |
| 473 | if (i > MAX_WRITE_IOMEM_RETRY) |
| 474 | return ret; |
| 475 | } |
| 476 | } while (ret == -1); |
| 477 | |
| 478 | return ret; |
| 479 | } |
| 480 | |
| 481 | /* |
| 482 | * This function gets the read port. |
| 483 | * |
| 484 | * If control port bit is set in MP read bitmap, the control port |
| 485 | * is returned, otherwise the current read port is returned and |
| 486 | * the value is increased (provided it does not reach the maximum |
| 487 | * limit, in which case it is reset to 1) |
| 488 | */ |
| 489 | static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port) |
| 490 | { |
| 491 | struct sdio_mmc_card *card = adapter->card; |
| 492 | u16 rd_bitmap = card->mp_rd_bitmap; |
| 493 | |
| 494 | dev_dbg(adapter->dev, "data: mp_rd_bitmap=0x%04x\n", rd_bitmap); |
| 495 | |
| 496 | if (!(rd_bitmap & (CTRL_PORT_MASK | DATA_PORT_MASK))) |
| 497 | return -1; |
| 498 | |
| 499 | if (card->mp_rd_bitmap & CTRL_PORT_MASK) { |
| 500 | card->mp_rd_bitmap &= (u16) (~CTRL_PORT_MASK); |
| 501 | *port = CTRL_PORT; |
| 502 | dev_dbg(adapter->dev, "data: port=%d mp_rd_bitmap=0x%04x\n", |
| 503 | *port, card->mp_rd_bitmap); |
| 504 | } else { |
| 505 | if (card->mp_rd_bitmap & (1 << card->curr_rd_port)) { |
| 506 | card->mp_rd_bitmap &= |
| 507 | (u16) (~(1 << card->curr_rd_port)); |
| 508 | *port = card->curr_rd_port; |
| 509 | |
| 510 | if (++card->curr_rd_port == MAX_PORT) |
| 511 | card->curr_rd_port = 1; |
| 512 | } else { |
| 513 | return -1; |
| 514 | } |
| 515 | |
| 516 | dev_dbg(adapter->dev, |
| 517 | "data: port=%d mp_rd_bitmap=0x%04x -> 0x%04x\n", |
| 518 | *port, rd_bitmap, card->mp_rd_bitmap); |
| 519 | } |
| 520 | return 0; |
| 521 | } |
| 522 | |
| 523 | /* |
| 524 | * This function gets the write port for data. |
| 525 | * |
| 526 | * The current write port is returned if available and the value is |
| 527 | * increased (provided it does not reach the maximum limit, in which |
| 528 | * case it is reset to 1) |
| 529 | */ |
| 530 | static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u8 *port) |
| 531 | { |
| 532 | struct sdio_mmc_card *card = adapter->card; |
| 533 | u16 wr_bitmap = card->mp_wr_bitmap; |
| 534 | |
| 535 | dev_dbg(adapter->dev, "data: mp_wr_bitmap=0x%04x\n", wr_bitmap); |
| 536 | |
| 537 | if (!(wr_bitmap & card->mp_data_port_mask)) |
| 538 | return -1; |
| 539 | |
| 540 | if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) { |
| 541 | card->mp_wr_bitmap &= (u16) (~(1 << card->curr_wr_port)); |
| 542 | *port = card->curr_wr_port; |
| 543 | if (++card->curr_wr_port == card->mp_end_port) |
| 544 | card->curr_wr_port = 1; |
| 545 | } else { |
| 546 | adapter->data_sent = true; |
| 547 | return -EBUSY; |
| 548 | } |
| 549 | |
| 550 | if (*port == CTRL_PORT) { |
| 551 | dev_err(adapter->dev, "invalid data port=%d cur port=%d" |
| 552 | " mp_wr_bitmap=0x%04x -> 0x%04x\n", |
| 553 | *port, card->curr_wr_port, wr_bitmap, |
| 554 | card->mp_wr_bitmap); |
| 555 | return -1; |
| 556 | } |
| 557 | |
| 558 | dev_dbg(adapter->dev, "data: port=%d mp_wr_bitmap=0x%04x -> 0x%04x\n", |
| 559 | *port, wr_bitmap, card->mp_wr_bitmap); |
| 560 | |
| 561 | return 0; |
| 562 | } |
| 563 | |
| 564 | /* |
| 565 | * This function polls the card status. |
| 566 | */ |
| 567 | static int |
| 568 | mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits) |
| 569 | { |
| 570 | u32 tries; |
Yogesh Ashok Powar | 270e58e | 2011-05-03 20:11:46 -0700 | [diff] [blame] | 571 | u32 cs; |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 572 | |
| 573 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { |
| 574 | if (mwifiex_read_reg(adapter, CARD_STATUS_REG, &cs)) |
| 575 | break; |
| 576 | else if ((cs & bits) == bits) |
| 577 | return 0; |
| 578 | |
| 579 | udelay(10); |
| 580 | } |
| 581 | |
| 582 | dev_err(adapter->dev, "poll card status failed, tries = %d\n", |
| 583 | tries); |
| 584 | return -1; |
| 585 | } |
| 586 | |
| 587 | /* |
| 588 | * This function reads the firmware status. |
| 589 | */ |
| 590 | static int |
| 591 | mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat) |
| 592 | { |
Yogesh Ashok Powar | 270e58e | 2011-05-03 20:11:46 -0700 | [diff] [blame] | 593 | u32 fws0, fws1; |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 594 | |
| 595 | if (mwifiex_read_reg(adapter, CARD_FW_STATUS0_REG, &fws0)) |
| 596 | return -1; |
| 597 | |
| 598 | if (mwifiex_read_reg(adapter, CARD_FW_STATUS1_REG, &fws1)) |
| 599 | return -1; |
| 600 | |
| 601 | *dat = (u16) ((fws1 << 8) | fws0); |
| 602 | |
| 603 | return 0; |
| 604 | } |
| 605 | |
| 606 | /* |
| 607 | * This function disables the host interrupt. |
| 608 | * |
| 609 | * The host interrupt mask is read, the disable bit is reset and |
| 610 | * written back to the card host interrupt mask register. |
| 611 | */ |
| 612 | static int mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter) |
| 613 | { |
Yogesh Ashok Powar | 270e58e | 2011-05-03 20:11:46 -0700 | [diff] [blame] | 614 | u32 host_int_mask; |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 615 | |
| 616 | /* Read back the host_int_mask register */ |
| 617 | if (mwifiex_read_reg(adapter, HOST_INT_MASK_REG, &host_int_mask)) |
| 618 | return -1; |
| 619 | |
| 620 | /* Update with the mask and write back to the register */ |
| 621 | host_int_mask &= ~HOST_INT_DISABLE; |
| 622 | |
| 623 | if (mwifiex_write_reg(adapter, HOST_INT_MASK_REG, host_int_mask)) { |
| 624 | dev_err(adapter->dev, "disable host interrupt failed\n"); |
| 625 | return -1; |
| 626 | } |
| 627 | |
| 628 | return 0; |
| 629 | } |
| 630 | |
| 631 | /* |
| 632 | * This function enables the host interrupt. |
| 633 | * |
| 634 | * The host interrupt enable mask is written to the card |
| 635 | * host interrupt mask register. |
| 636 | */ |
| 637 | static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter) |
| 638 | { |
| 639 | /* Simply write the mask to the register */ |
| 640 | if (mwifiex_write_reg(adapter, HOST_INT_MASK_REG, HOST_INT_ENABLE)) { |
| 641 | dev_err(adapter->dev, "enable host interrupt failed\n"); |
| 642 | return -1; |
| 643 | } |
| 644 | return 0; |
| 645 | } |
| 646 | |
| 647 | /* |
| 648 | * This function sends a data buffer to the card. |
| 649 | */ |
| 650 | static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter, |
| 651 | u32 *type, u8 *buffer, |
| 652 | u32 npayload, u32 ioport) |
| 653 | { |
Yogesh Ashok Powar | 270e58e | 2011-05-03 20:11:46 -0700 | [diff] [blame] | 654 | int ret; |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 655 | u32 nb; |
| 656 | |
| 657 | if (!buffer) { |
| 658 | dev_err(adapter->dev, "%s: buffer is NULL\n", __func__); |
| 659 | return -1; |
| 660 | } |
| 661 | |
Amitkumar Karwar | 572e8f3 | 2011-04-13 17:27:08 -0700 | [diff] [blame] | 662 | ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1); |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 663 | |
| 664 | if (ret) { |
| 665 | dev_err(adapter->dev, "%s: read iomem failed: %d\n", __func__, |
| 666 | ret); |
| 667 | return -1; |
| 668 | } |
| 669 | |
| 670 | nb = le16_to_cpu(*(__le16 *) (buffer)); |
| 671 | if (nb > npayload) { |
| 672 | dev_err(adapter->dev, "%s: invalid packet, nb=%d, npayload=%d\n", |
| 673 | __func__, nb, npayload); |
| 674 | return -1; |
| 675 | } |
| 676 | |
| 677 | *type = le16_to_cpu(*(__le16 *) (buffer + 2)); |
| 678 | |
| 679 | return ret; |
| 680 | } |
| 681 | |
| 682 | /* |
| 683 | * This function downloads the firmware to the card. |
| 684 | * |
| 685 | * Firmware is downloaded to the card in blocks. Every block download |
| 686 | * is tested for CRC errors, and retried a number of times before |
| 687 | * returning failure. |
| 688 | */ |
| 689 | static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter, |
| 690 | struct mwifiex_fw_image *fw) |
| 691 | { |
Yogesh Ashok Powar | 270e58e | 2011-05-03 20:11:46 -0700 | [diff] [blame] | 692 | int ret; |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 693 | u8 *firmware = fw->fw_buf; |
| 694 | u32 firmware_len = fw->fw_len; |
| 695 | u32 offset = 0; |
| 696 | u32 base0, base1; |
| 697 | u8 *fwbuf; |
| 698 | u16 len = 0; |
Yogesh Ashok Powar | 270e58e | 2011-05-03 20:11:46 -0700 | [diff] [blame] | 699 | u32 txlen, tx_blocks = 0, tries; |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 700 | u32 i = 0; |
| 701 | |
| 702 | if (!firmware_len) { |
| 703 | dev_err(adapter->dev, "firmware image not found!" |
| 704 | " Terminating download\n"); |
| 705 | return -1; |
| 706 | } |
| 707 | |
| 708 | dev_dbg(adapter->dev, "info: downloading FW image (%d bytes)\n", |
| 709 | firmware_len); |
| 710 | |
| 711 | /* Assume that the allocated buffer is 8-byte aligned */ |
| 712 | fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL); |
| 713 | if (!fwbuf) { |
| 714 | dev_err(adapter->dev, "unable to alloc buffer for firmware." |
| 715 | " Terminating download\n"); |
Christoph Fritz | b53575e | 2011-05-08 22:50:09 +0200 | [diff] [blame] | 716 | return -ENOMEM; |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 717 | } |
| 718 | |
| 719 | /* Perform firmware data transfer */ |
| 720 | do { |
| 721 | /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY |
| 722 | bits */ |
| 723 | ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY | |
| 724 | DN_LD_CARD_RDY); |
| 725 | if (ret) { |
| 726 | dev_err(adapter->dev, "FW download with helper:" |
| 727 | " poll status timeout @ %d\n", offset); |
| 728 | goto done; |
| 729 | } |
| 730 | |
| 731 | /* More data? */ |
| 732 | if (offset >= firmware_len) |
| 733 | break; |
| 734 | |
| 735 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { |
| 736 | ret = mwifiex_read_reg(adapter, HOST_F1_RD_BASE_0, |
| 737 | &base0); |
| 738 | if (ret) { |
| 739 | dev_err(adapter->dev, "dev BASE0 register read" |
| 740 | " failed: base0=0x%04X(%d). Terminating " |
| 741 | "download\n", base0, base0); |
| 742 | goto done; |
| 743 | } |
| 744 | ret = mwifiex_read_reg(adapter, HOST_F1_RD_BASE_1, |
| 745 | &base1); |
| 746 | if (ret) { |
| 747 | dev_err(adapter->dev, "dev BASE1 register read" |
| 748 | " failed: base1=0x%04X(%d). Terminating " |
| 749 | "download\n", base1, base1); |
| 750 | goto done; |
| 751 | } |
| 752 | len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff)); |
| 753 | |
| 754 | if (len) |
| 755 | break; |
| 756 | |
| 757 | udelay(10); |
| 758 | } |
| 759 | |
| 760 | if (!len) { |
| 761 | break; |
| 762 | } else if (len > MWIFIEX_UPLD_SIZE) { |
| 763 | dev_err(adapter->dev, "FW download failed @ %d," |
| 764 | " invalid length %d\n", offset, len); |
| 765 | ret = -1; |
| 766 | goto done; |
| 767 | } |
| 768 | |
| 769 | txlen = len; |
| 770 | |
| 771 | if (len & BIT(0)) { |
| 772 | i++; |
| 773 | if (i > MAX_WRITE_IOMEM_RETRY) { |
| 774 | dev_err(adapter->dev, "FW download failed @" |
| 775 | " %d, over max retry count\n", offset); |
| 776 | ret = -1; |
| 777 | goto done; |
| 778 | } |
| 779 | dev_err(adapter->dev, "CRC indicated by the helper:" |
| 780 | " len = 0x%04X, txlen = %d\n", len, txlen); |
| 781 | len &= ~BIT(0); |
| 782 | /* Setting this to 0 to resend from same offset */ |
| 783 | txlen = 0; |
| 784 | } else { |
| 785 | i = 0; |
| 786 | |
| 787 | /* Set blocksize to transfer - checking for last |
| 788 | block */ |
| 789 | if (firmware_len - offset < txlen) |
| 790 | txlen = firmware_len - offset; |
| 791 | |
| 792 | tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - |
| 793 | 1) / MWIFIEX_SDIO_BLOCK_SIZE; |
| 794 | |
| 795 | /* Copy payload to buffer */ |
| 796 | memmove(fwbuf, &firmware[offset], txlen); |
| 797 | } |
| 798 | |
| 799 | ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks * |
| 800 | MWIFIEX_SDIO_BLOCK_SIZE, |
Amitkumar Karwar | 572e8f3 | 2011-04-13 17:27:08 -0700 | [diff] [blame] | 801 | adapter->ioport); |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 802 | if (ret) { |
| 803 | dev_err(adapter->dev, "FW download, write iomem (%d)" |
| 804 | " failed @ %d\n", i, offset); |
| 805 | if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04)) |
| 806 | dev_err(adapter->dev, "write CFG reg failed\n"); |
| 807 | |
| 808 | ret = -1; |
| 809 | goto done; |
| 810 | } |
| 811 | |
| 812 | offset += txlen; |
| 813 | } while (true); |
| 814 | |
| 815 | dev_dbg(adapter->dev, "info: FW download over, size %d bytes\n", |
| 816 | offset); |
| 817 | |
| 818 | ret = 0; |
| 819 | done: |
| 820 | kfree(fwbuf); |
| 821 | return ret; |
| 822 | } |
| 823 | |
| 824 | /* |
| 825 | * This function checks the firmware status in card. |
| 826 | * |
| 827 | * The winner interface is also determined by this function. |
| 828 | */ |
| 829 | static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter, |
| 830 | u32 poll_num, int *winner) |
| 831 | { |
| 832 | int ret = 0; |
| 833 | u16 firmware_stat; |
| 834 | u32 tries; |
| 835 | u32 winner_status; |
| 836 | |
| 837 | /* Wait for firmware initialization event */ |
| 838 | for (tries = 0; tries < poll_num; tries++) { |
| 839 | ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat); |
| 840 | if (ret) |
| 841 | continue; |
| 842 | if (firmware_stat == FIRMWARE_READY) { |
| 843 | ret = 0; |
| 844 | break; |
| 845 | } else { |
| 846 | mdelay(100); |
| 847 | ret = -1; |
| 848 | } |
| 849 | } |
| 850 | |
| 851 | if (winner && ret) { |
| 852 | if (mwifiex_read_reg |
| 853 | (adapter, CARD_FW_STATUS0_REG, &winner_status)) |
| 854 | winner_status = 0; |
| 855 | |
| 856 | if (winner_status) |
| 857 | *winner = 0; |
| 858 | else |
| 859 | *winner = 1; |
| 860 | } |
| 861 | return ret; |
| 862 | } |
| 863 | |
| 864 | /* |
| 865 | * This function reads the interrupt status from card. |
| 866 | */ |
| 867 | static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter) |
| 868 | { |
| 869 | struct sdio_mmc_card *card = adapter->card; |
Yogesh Ashok Powar | 270e58e | 2011-05-03 20:11:46 -0700 | [diff] [blame] | 870 | u32 sdio_ireg; |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 871 | unsigned long flags; |
| 872 | |
| 873 | if (mwifiex_read_data_sync(adapter, card->mp_regs, MAX_MP_REGS, |
Amitkumar Karwar | 572e8f3 | 2011-04-13 17:27:08 -0700 | [diff] [blame] | 874 | REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 875 | 0)) { |
| 876 | dev_err(adapter->dev, "read mp_regs failed\n"); |
| 877 | return; |
| 878 | } |
| 879 | |
| 880 | sdio_ireg = card->mp_regs[HOST_INTSTATUS_REG]; |
| 881 | if (sdio_ireg) { |
| 882 | /* |
| 883 | * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS |
| 884 | * Clear the interrupt status register |
| 885 | */ |
| 886 | dev_dbg(adapter->dev, "int: sdio_ireg = %#x\n", sdio_ireg); |
| 887 | spin_lock_irqsave(&adapter->int_lock, flags); |
| 888 | adapter->int_status |= sdio_ireg; |
| 889 | spin_unlock_irqrestore(&adapter->int_lock, flags); |
| 890 | } |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 891 | } |
| 892 | |
| 893 | /* |
| 894 | * SDIO interrupt handler. |
| 895 | * |
| 896 | * This function reads the interrupt status from firmware and assigns |
| 897 | * the main process in workqueue which will handle the interrupt. |
| 898 | */ |
| 899 | static void |
| 900 | mwifiex_sdio_interrupt(struct sdio_func *func) |
| 901 | { |
| 902 | struct mwifiex_adapter *adapter; |
| 903 | struct sdio_mmc_card *card; |
| 904 | |
| 905 | card = sdio_get_drvdata(func); |
| 906 | if (!card || !card->adapter) { |
| 907 | pr_debug("int: func=%p card=%p adapter=%p\n", |
| 908 | func, card, card ? card->adapter : NULL); |
| 909 | return; |
| 910 | } |
| 911 | adapter = card->adapter; |
| 912 | |
| 913 | if (adapter->surprise_removed) |
| 914 | return; |
| 915 | |
| 916 | if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP) |
| 917 | adapter->ps_state = PS_STATE_AWAKE; |
| 918 | |
| 919 | mwifiex_interrupt_status(adapter); |
| 920 | queue_work(adapter->workqueue, &adapter->main_work); |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 921 | } |
| 922 | |
| 923 | /* |
| 924 | * This function decodes a received packet. |
| 925 | * |
| 926 | * Based on the type, the packet is treated as either a data, or |
| 927 | * a command response, or an event, and the correct handler |
| 928 | * function is invoked. |
| 929 | */ |
| 930 | static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter, |
| 931 | struct sk_buff *skb, u32 upld_typ) |
| 932 | { |
| 933 | u8 *cmd_buf; |
| 934 | |
| 935 | skb_pull(skb, INTF_HEADER_LEN); |
| 936 | |
| 937 | switch (upld_typ) { |
| 938 | case MWIFIEX_TYPE_DATA: |
| 939 | dev_dbg(adapter->dev, "info: --- Rx: Data packet ---\n"); |
| 940 | mwifiex_handle_rx_packet(adapter, skb); |
| 941 | break; |
| 942 | |
| 943 | case MWIFIEX_TYPE_CMD: |
| 944 | dev_dbg(adapter->dev, "info: --- Rx: Cmd Response ---\n"); |
| 945 | /* take care of curr_cmd = NULL case */ |
| 946 | if (!adapter->curr_cmd) { |
| 947 | cmd_buf = adapter->upld_buf; |
| 948 | |
| 949 | if (adapter->ps_state == PS_STATE_SLEEP_CFM) |
| 950 | mwifiex_process_sleep_confirm_resp(adapter, |
| 951 | skb->data, skb->len); |
| 952 | |
| 953 | memcpy(cmd_buf, skb->data, min_t(u32, |
| 954 | MWIFIEX_SIZE_OF_CMD_BUFFER, skb->len)); |
| 955 | |
| 956 | dev_kfree_skb_any(skb); |
| 957 | } else { |
| 958 | adapter->cmd_resp_received = true; |
| 959 | adapter->curr_cmd->resp_skb = skb; |
| 960 | } |
| 961 | break; |
| 962 | |
| 963 | case MWIFIEX_TYPE_EVENT: |
| 964 | dev_dbg(adapter->dev, "info: --- Rx: Event ---\n"); |
| 965 | adapter->event_cause = *(u32 *) skb->data; |
| 966 | |
| 967 | skb_pull(skb, MWIFIEX_EVENT_HEADER_LEN); |
| 968 | |
| 969 | if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE)) |
| 970 | memcpy(adapter->event_body, skb->data, skb->len); |
| 971 | |
| 972 | /* event cause has been saved to adapter->event_cause */ |
| 973 | adapter->event_received = true; |
| 974 | adapter->event_skb = skb; |
| 975 | |
| 976 | break; |
| 977 | |
| 978 | default: |
| 979 | dev_err(adapter->dev, "unknown upload type %#x\n", upld_typ); |
| 980 | dev_kfree_skb_any(skb); |
| 981 | break; |
| 982 | } |
| 983 | |
| 984 | return 0; |
| 985 | } |
| 986 | |
| 987 | /* |
| 988 | * This function transfers received packets from card to driver, performing |
| 989 | * aggregation if required. |
| 990 | * |
| 991 | * For data received on control port, or if aggregation is disabled, the |
| 992 | * received buffers are uploaded as separate packets. However, if aggregation |
| 993 | * is enabled and required, the buffers are copied onto an aggregation buffer, |
| 994 | * provided there is space left, processed and finally uploaded. |
| 995 | */ |
| 996 | static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter, |
| 997 | struct sk_buff *skb, u8 port) |
| 998 | { |
| 999 | struct sdio_mmc_card *card = adapter->card; |
| 1000 | s32 f_do_rx_aggr = 0; |
| 1001 | s32 f_do_rx_cur = 0; |
| 1002 | s32 f_aggr_cur = 0; |
| 1003 | struct sk_buff *skb_deaggr; |
Yogesh Ashok Powar | 270e58e | 2011-05-03 20:11:46 -0700 | [diff] [blame] | 1004 | u32 pind; |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 1005 | u32 pkt_len, pkt_type = 0; |
| 1006 | u8 *curr_ptr; |
| 1007 | u32 rx_len = skb->len; |
| 1008 | |
| 1009 | if (port == CTRL_PORT) { |
| 1010 | /* Read the command Resp without aggr */ |
| 1011 | dev_dbg(adapter->dev, "info: %s: no aggregation for cmd " |
| 1012 | "response\n", __func__); |
| 1013 | |
| 1014 | f_do_rx_cur = 1; |
| 1015 | goto rx_curr_single; |
| 1016 | } |
| 1017 | |
| 1018 | if (!card->mpa_rx.enabled) { |
| 1019 | dev_dbg(adapter->dev, "info: %s: rx aggregation disabled\n", |
| 1020 | __func__); |
| 1021 | |
| 1022 | f_do_rx_cur = 1; |
| 1023 | goto rx_curr_single; |
| 1024 | } |
| 1025 | |
| 1026 | if (card->mp_rd_bitmap & (~((u16) CTRL_PORT_MASK))) { |
| 1027 | /* Some more data RX pending */ |
| 1028 | dev_dbg(adapter->dev, "info: %s: not last packet\n", __func__); |
| 1029 | |
| 1030 | if (MP_RX_AGGR_IN_PROGRESS(card)) { |
| 1031 | if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len)) { |
| 1032 | f_aggr_cur = 1; |
| 1033 | } else { |
| 1034 | /* No room in Aggr buf, do rx aggr now */ |
| 1035 | f_do_rx_aggr = 1; |
| 1036 | f_do_rx_cur = 1; |
| 1037 | } |
| 1038 | } else { |
| 1039 | /* Rx aggr not in progress */ |
| 1040 | f_aggr_cur = 1; |
| 1041 | } |
| 1042 | |
| 1043 | } else { |
| 1044 | /* No more data RX pending */ |
| 1045 | dev_dbg(adapter->dev, "info: %s: last packet\n", __func__); |
| 1046 | |
| 1047 | if (MP_RX_AGGR_IN_PROGRESS(card)) { |
| 1048 | f_do_rx_aggr = 1; |
| 1049 | if (MP_RX_AGGR_BUF_HAS_ROOM(card, skb->len)) |
| 1050 | f_aggr_cur = 1; |
| 1051 | else |
| 1052 | /* No room in Aggr buf, do rx aggr now */ |
| 1053 | f_do_rx_cur = 1; |
| 1054 | } else { |
| 1055 | f_do_rx_cur = 1; |
| 1056 | } |
| 1057 | } |
| 1058 | |
| 1059 | if (f_aggr_cur) { |
| 1060 | dev_dbg(adapter->dev, "info: current packet aggregation\n"); |
| 1061 | /* Curr pkt can be aggregated */ |
| 1062 | MP_RX_AGGR_SETUP(card, skb, port); |
| 1063 | |
| 1064 | if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) || |
| 1065 | MP_RX_AGGR_PORT_LIMIT_REACHED(card)) { |
| 1066 | dev_dbg(adapter->dev, "info: %s: aggregated packet " |
| 1067 | "limit reached\n", __func__); |
| 1068 | /* No more pkts allowed in Aggr buf, rx it */ |
| 1069 | f_do_rx_aggr = 1; |
| 1070 | } |
| 1071 | } |
| 1072 | |
| 1073 | if (f_do_rx_aggr) { |
| 1074 | /* do aggr RX now */ |
| 1075 | dev_dbg(adapter->dev, "info: do_rx_aggr: num of packets: %d\n", |
| 1076 | card->mpa_rx.pkt_cnt); |
| 1077 | |
| 1078 | if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf, |
| 1079 | card->mpa_rx.buf_len, |
| 1080 | (adapter->ioport | 0x1000 | |
| 1081 | (card->mpa_rx.ports << 4)) + |
Amitkumar Karwar | 572e8f3 | 2011-04-13 17:27:08 -0700 | [diff] [blame] | 1082 | card->mpa_rx.start_port, 1)) |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 1083 | return -1; |
| 1084 | |
| 1085 | curr_ptr = card->mpa_rx.buf; |
| 1086 | |
| 1087 | for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) { |
| 1088 | |
| 1089 | /* get curr PKT len & type */ |
| 1090 | pkt_len = *(u16 *) &curr_ptr[0]; |
| 1091 | pkt_type = *(u16 *) &curr_ptr[2]; |
| 1092 | |
| 1093 | /* copy pkt to deaggr buf */ |
| 1094 | skb_deaggr = card->mpa_rx.skb_arr[pind]; |
| 1095 | |
| 1096 | if ((pkt_type == MWIFIEX_TYPE_DATA) && (pkt_len <= |
| 1097 | card->mpa_rx.len_arr[pind])) { |
| 1098 | |
| 1099 | memcpy(skb_deaggr->data, curr_ptr, pkt_len); |
| 1100 | |
| 1101 | skb_trim(skb_deaggr, pkt_len); |
| 1102 | |
| 1103 | /* Process de-aggr packet */ |
| 1104 | mwifiex_decode_rx_packet(adapter, skb_deaggr, |
| 1105 | pkt_type); |
| 1106 | } else { |
| 1107 | dev_err(adapter->dev, "wrong aggr pkt:" |
| 1108 | " type=%d len=%d max_len=%d\n", |
| 1109 | pkt_type, pkt_len, |
| 1110 | card->mpa_rx.len_arr[pind]); |
| 1111 | dev_kfree_skb_any(skb_deaggr); |
| 1112 | } |
| 1113 | curr_ptr += card->mpa_rx.len_arr[pind]; |
| 1114 | } |
| 1115 | MP_RX_AGGR_BUF_RESET(card); |
| 1116 | } |
| 1117 | |
| 1118 | rx_curr_single: |
| 1119 | if (f_do_rx_cur) { |
| 1120 | dev_dbg(adapter->dev, "info: RX: port: %d, rx_len: %d\n", |
| 1121 | port, rx_len); |
| 1122 | |
| 1123 | if (mwifiex_sdio_card_to_host(adapter, &pkt_type, |
| 1124 | skb->data, skb->len, |
| 1125 | adapter->ioport + port)) |
| 1126 | return -1; |
| 1127 | |
| 1128 | mwifiex_decode_rx_packet(adapter, skb, pkt_type); |
| 1129 | } |
| 1130 | |
| 1131 | return 0; |
| 1132 | } |
| 1133 | |
| 1134 | /* |
| 1135 | * This function checks the current interrupt status. |
| 1136 | * |
| 1137 | * The following interrupts are checked and handled by this function - |
| 1138 | * - Data sent |
| 1139 | * - Command sent |
| 1140 | * - Packets received |
| 1141 | * |
| 1142 | * Since the firmware does not generate download ready interrupt if the |
| 1143 | * port updated is command port only, command sent interrupt checking |
| 1144 | * should be done manually, and for every SDIO interrupt. |
| 1145 | * |
| 1146 | * In case of Rx packets received, the packets are uploaded from card to |
| 1147 | * host and processed accordingly. |
| 1148 | */ |
| 1149 | static int mwifiex_process_int_status(struct mwifiex_adapter *adapter) |
| 1150 | { |
| 1151 | struct sdio_mmc_card *card = adapter->card; |
| 1152 | int ret = 0; |
| 1153 | u8 sdio_ireg; |
Yogesh Ashok Powar | 270e58e | 2011-05-03 20:11:46 -0700 | [diff] [blame] | 1154 | struct sk_buff *skb; |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 1155 | u8 port = CTRL_PORT; |
| 1156 | u32 len_reg_l, len_reg_u; |
| 1157 | u32 rx_blocks; |
| 1158 | u16 rx_len; |
| 1159 | unsigned long flags; |
| 1160 | |
| 1161 | spin_lock_irqsave(&adapter->int_lock, flags); |
| 1162 | sdio_ireg = adapter->int_status; |
| 1163 | adapter->int_status = 0; |
| 1164 | spin_unlock_irqrestore(&adapter->int_lock, flags); |
| 1165 | |
| 1166 | if (!sdio_ireg) |
| 1167 | return ret; |
| 1168 | |
| 1169 | if (sdio_ireg & DN_LD_HOST_INT_STATUS) { |
| 1170 | card->mp_wr_bitmap = ((u16) card->mp_regs[WR_BITMAP_U]) << 8; |
| 1171 | card->mp_wr_bitmap |= (u16) card->mp_regs[WR_BITMAP_L]; |
| 1172 | dev_dbg(adapter->dev, "int: DNLD: wr_bitmap=0x%04x\n", |
| 1173 | card->mp_wr_bitmap); |
| 1174 | if (adapter->data_sent && |
| 1175 | (card->mp_wr_bitmap & card->mp_data_port_mask)) { |
| 1176 | dev_dbg(adapter->dev, |
| 1177 | "info: <--- Tx DONE Interrupt --->\n"); |
| 1178 | adapter->data_sent = false; |
| 1179 | } |
| 1180 | } |
| 1181 | |
| 1182 | /* As firmware will not generate download ready interrupt if the port |
| 1183 | updated is command port only, cmd_sent should be done for any SDIO |
| 1184 | interrupt. */ |
| 1185 | if (adapter->cmd_sent) { |
| 1186 | /* Check if firmware has attach buffer at command port and |
| 1187 | update just that in wr_bit_map. */ |
| 1188 | card->mp_wr_bitmap |= |
| 1189 | (u16) card->mp_regs[WR_BITMAP_L] & CTRL_PORT_MASK; |
| 1190 | if (card->mp_wr_bitmap & CTRL_PORT_MASK) |
| 1191 | adapter->cmd_sent = false; |
| 1192 | } |
| 1193 | |
| 1194 | dev_dbg(adapter->dev, "info: cmd_sent=%d data_sent=%d\n", |
| 1195 | adapter->cmd_sent, adapter->data_sent); |
| 1196 | if (sdio_ireg & UP_LD_HOST_INT_STATUS) { |
| 1197 | card->mp_rd_bitmap = ((u16) card->mp_regs[RD_BITMAP_U]) << 8; |
| 1198 | card->mp_rd_bitmap |= (u16) card->mp_regs[RD_BITMAP_L]; |
| 1199 | dev_dbg(adapter->dev, "int: UPLD: rd_bitmap=0x%04x\n", |
| 1200 | card->mp_rd_bitmap); |
| 1201 | |
| 1202 | while (true) { |
| 1203 | ret = mwifiex_get_rd_port(adapter, &port); |
| 1204 | if (ret) { |
| 1205 | dev_dbg(adapter->dev, |
| 1206 | "info: no more rd_port available\n"); |
| 1207 | break; |
| 1208 | } |
| 1209 | len_reg_l = RD_LEN_P0_L + (port << 1); |
| 1210 | len_reg_u = RD_LEN_P0_U + (port << 1); |
| 1211 | rx_len = ((u16) card->mp_regs[len_reg_u]) << 8; |
| 1212 | rx_len |= (u16) card->mp_regs[len_reg_l]; |
| 1213 | dev_dbg(adapter->dev, "info: RX: port=%d rx_len=%u\n", |
| 1214 | port, rx_len); |
| 1215 | rx_blocks = |
| 1216 | (rx_len + MWIFIEX_SDIO_BLOCK_SIZE - |
| 1217 | 1) / MWIFIEX_SDIO_BLOCK_SIZE; |
| 1218 | if (rx_len <= INTF_HEADER_LEN |
| 1219 | || (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) > |
| 1220 | MWIFIEX_RX_DATA_BUF_SIZE) { |
| 1221 | dev_err(adapter->dev, "invalid rx_len=%d\n", |
| 1222 | rx_len); |
| 1223 | return -1; |
| 1224 | } |
| 1225 | rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE); |
| 1226 | |
| 1227 | skb = dev_alloc_skb(rx_len); |
| 1228 | |
| 1229 | if (!skb) { |
| 1230 | dev_err(adapter->dev, "%s: failed to alloc skb", |
| 1231 | __func__); |
| 1232 | return -1; |
| 1233 | } |
| 1234 | |
| 1235 | skb_put(skb, rx_len); |
| 1236 | |
| 1237 | dev_dbg(adapter->dev, "info: rx_len = %d skb->len = %d\n", |
| 1238 | rx_len, skb->len); |
| 1239 | |
| 1240 | if (mwifiex_sdio_card_to_host_mp_aggr(adapter, skb, |
| 1241 | port)) { |
| 1242 | u32 cr = 0; |
| 1243 | |
| 1244 | dev_err(adapter->dev, "card_to_host_mpa failed:" |
| 1245 | " int status=%#x\n", sdio_ireg); |
| 1246 | if (mwifiex_read_reg(adapter, |
| 1247 | CONFIGURATION_REG, &cr)) |
| 1248 | dev_err(adapter->dev, |
| 1249 | "read CFG reg failed\n"); |
| 1250 | |
| 1251 | dev_dbg(adapter->dev, |
| 1252 | "info: CFG reg val = %d\n", cr); |
| 1253 | if (mwifiex_write_reg(adapter, |
| 1254 | CONFIGURATION_REG, |
| 1255 | (cr | 0x04))) |
| 1256 | dev_err(adapter->dev, |
| 1257 | "write CFG reg failed\n"); |
| 1258 | |
| 1259 | dev_dbg(adapter->dev, "info: write success\n"); |
| 1260 | if (mwifiex_read_reg(adapter, |
| 1261 | CONFIGURATION_REG, &cr)) |
| 1262 | dev_err(adapter->dev, |
| 1263 | "read CFG reg failed\n"); |
| 1264 | |
| 1265 | dev_dbg(adapter->dev, |
| 1266 | "info: CFG reg val =%x\n", cr); |
| 1267 | dev_kfree_skb_any(skb); |
| 1268 | return -1; |
| 1269 | } |
| 1270 | } |
| 1271 | } |
| 1272 | |
| 1273 | return 0; |
| 1274 | } |
| 1275 | |
| 1276 | /* |
| 1277 | * This function aggregates transmission buffers in driver and downloads |
| 1278 | * the aggregated packet to card. |
| 1279 | * |
| 1280 | * The individual packets are aggregated by copying into an aggregation |
| 1281 | * buffer and then downloaded to the card. Previous unsent packets in the |
| 1282 | * aggregation buffer are pre-copied first before new packets are added. |
| 1283 | * Aggregation is done till there is space left in the aggregation buffer, |
| 1284 | * or till new packets are available. |
| 1285 | * |
| 1286 | * The function will only download the packet to the card when aggregation |
| 1287 | * stops, otherwise it will just aggregate the packet in aggregation buffer |
| 1288 | * and return. |
| 1289 | */ |
| 1290 | static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter, |
| 1291 | u8 *payload, u32 pkt_len, u8 port, |
| 1292 | u32 next_pkt_len) |
| 1293 | { |
| 1294 | struct sdio_mmc_card *card = adapter->card; |
| 1295 | int ret = 0; |
| 1296 | s32 f_send_aggr_buf = 0; |
| 1297 | s32 f_send_cur_buf = 0; |
| 1298 | s32 f_precopy_cur_buf = 0; |
| 1299 | s32 f_postcopy_cur_buf = 0; |
| 1300 | |
| 1301 | if ((!card->mpa_tx.enabled) || (port == CTRL_PORT)) { |
| 1302 | dev_dbg(adapter->dev, "info: %s: tx aggregation disabled\n", |
| 1303 | __func__); |
| 1304 | |
| 1305 | f_send_cur_buf = 1; |
| 1306 | goto tx_curr_single; |
| 1307 | } |
| 1308 | |
| 1309 | if (next_pkt_len) { |
| 1310 | /* More pkt in TX queue */ |
| 1311 | dev_dbg(adapter->dev, "info: %s: more packets in queue.\n", |
| 1312 | __func__); |
| 1313 | |
| 1314 | if (MP_TX_AGGR_IN_PROGRESS(card)) { |
| 1315 | if (!MP_TX_AGGR_PORT_LIMIT_REACHED(card) && |
| 1316 | MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) { |
| 1317 | f_precopy_cur_buf = 1; |
| 1318 | |
| 1319 | if (!(card->mp_wr_bitmap & |
| 1320 | (1 << card->curr_wr_port)) |
| 1321 | || !MP_TX_AGGR_BUF_HAS_ROOM( |
| 1322 | card, next_pkt_len)) |
| 1323 | f_send_aggr_buf = 1; |
| 1324 | } else { |
| 1325 | /* No room in Aggr buf, send it */ |
| 1326 | f_send_aggr_buf = 1; |
| 1327 | |
| 1328 | if (MP_TX_AGGR_PORT_LIMIT_REACHED(card) || |
| 1329 | !(card->mp_wr_bitmap & |
| 1330 | (1 << card->curr_wr_port))) |
| 1331 | f_send_cur_buf = 1; |
| 1332 | else |
| 1333 | f_postcopy_cur_buf = 1; |
| 1334 | } |
| 1335 | } else { |
| 1336 | if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) |
| 1337 | && (card->mp_wr_bitmap & (1 << card->curr_wr_port))) |
| 1338 | f_precopy_cur_buf = 1; |
| 1339 | else |
| 1340 | f_send_cur_buf = 1; |
| 1341 | } |
| 1342 | } else { |
| 1343 | /* Last pkt in TX queue */ |
| 1344 | dev_dbg(adapter->dev, "info: %s: Last packet in Tx Queue.\n", |
| 1345 | __func__); |
| 1346 | |
| 1347 | if (MP_TX_AGGR_IN_PROGRESS(card)) { |
| 1348 | /* some packs in Aggr buf already */ |
| 1349 | f_send_aggr_buf = 1; |
| 1350 | |
| 1351 | if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) |
| 1352 | f_precopy_cur_buf = 1; |
| 1353 | else |
| 1354 | /* No room in Aggr buf, send it */ |
| 1355 | f_send_cur_buf = 1; |
| 1356 | } else { |
| 1357 | f_send_cur_buf = 1; |
| 1358 | } |
| 1359 | } |
| 1360 | |
| 1361 | if (f_precopy_cur_buf) { |
| 1362 | dev_dbg(adapter->dev, "data: %s: precopy current buffer\n", |
| 1363 | __func__); |
| 1364 | MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); |
| 1365 | |
| 1366 | if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) || |
| 1367 | MP_TX_AGGR_PORT_LIMIT_REACHED(card)) |
| 1368 | /* No more pkts allowed in Aggr buf, send it */ |
| 1369 | f_send_aggr_buf = 1; |
| 1370 | } |
| 1371 | |
| 1372 | if (f_send_aggr_buf) { |
| 1373 | dev_dbg(adapter->dev, "data: %s: send aggr buffer: %d %d\n", |
| 1374 | __func__, |
| 1375 | card->mpa_tx.start_port, card->mpa_tx.ports); |
| 1376 | ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf, |
| 1377 | card->mpa_tx.buf_len, |
| 1378 | (adapter->ioport | 0x1000 | |
| 1379 | (card->mpa_tx.ports << 4)) + |
| 1380 | card->mpa_tx.start_port); |
| 1381 | |
| 1382 | MP_TX_AGGR_BUF_RESET(card); |
| 1383 | } |
| 1384 | |
| 1385 | tx_curr_single: |
| 1386 | if (f_send_cur_buf) { |
| 1387 | dev_dbg(adapter->dev, "data: %s: send current buffer %d\n", |
| 1388 | __func__, port); |
| 1389 | ret = mwifiex_write_data_to_card(adapter, payload, pkt_len, |
| 1390 | adapter->ioport + port); |
| 1391 | } |
| 1392 | |
| 1393 | if (f_postcopy_cur_buf) { |
| 1394 | dev_dbg(adapter->dev, "data: %s: postcopy current buffer\n", |
| 1395 | __func__); |
| 1396 | MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); |
| 1397 | } |
| 1398 | |
| 1399 | return ret; |
| 1400 | } |
| 1401 | |
| 1402 | /* |
| 1403 | * This function downloads data from driver to card. |
| 1404 | * |
| 1405 | * Both commands and data packets are transferred to the card by this |
| 1406 | * function. |
| 1407 | * |
| 1408 | * This function adds the SDIO specific header to the front of the buffer |
| 1409 | * before transferring. The header contains the length of the packet and |
| 1410 | * the type. The firmware handles the packets based upon this set type. |
| 1411 | */ |
| 1412 | static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter, |
| 1413 | u8 type, u8 *payload, u32 pkt_len, |
| 1414 | struct mwifiex_tx_param *tx_param) |
| 1415 | { |
| 1416 | struct sdio_mmc_card *card = adapter->card; |
Yogesh Ashok Powar | 270e58e | 2011-05-03 20:11:46 -0700 | [diff] [blame] | 1417 | int ret; |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 1418 | u32 buf_block_len; |
| 1419 | u32 blk_size; |
| 1420 | u8 port = CTRL_PORT; |
| 1421 | |
| 1422 | /* Allocate buffer and copy payload */ |
| 1423 | blk_size = MWIFIEX_SDIO_BLOCK_SIZE; |
| 1424 | buf_block_len = (pkt_len + blk_size - 1) / blk_size; |
| 1425 | *(u16 *) &payload[0] = (u16) pkt_len; |
| 1426 | *(u16 *) &payload[2] = type; |
| 1427 | |
| 1428 | /* |
| 1429 | * This is SDIO specific header |
| 1430 | * u16 length, |
| 1431 | * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1, |
| 1432 | * MWIFIEX_TYPE_EVENT = 3) |
| 1433 | */ |
| 1434 | if (type == MWIFIEX_TYPE_DATA) { |
| 1435 | ret = mwifiex_get_wr_port_data(adapter, &port); |
| 1436 | if (ret) { |
| 1437 | dev_err(adapter->dev, "%s: no wr_port available\n", |
| 1438 | __func__); |
| 1439 | return ret; |
| 1440 | } |
| 1441 | } else { |
| 1442 | adapter->cmd_sent = true; |
| 1443 | /* Type must be MWIFIEX_TYPE_CMD */ |
| 1444 | |
| 1445 | if (pkt_len <= INTF_HEADER_LEN || |
| 1446 | pkt_len > MWIFIEX_UPLD_SIZE) |
| 1447 | dev_err(adapter->dev, "%s: payload=%p, nb=%d\n", |
| 1448 | __func__, payload, pkt_len); |
| 1449 | } |
| 1450 | |
| 1451 | /* Transfer data to card */ |
| 1452 | pkt_len = buf_block_len * blk_size; |
| 1453 | |
| 1454 | if (tx_param) |
| 1455 | ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, |
| 1456 | port, tx_param->next_pkt_len); |
| 1457 | else |
| 1458 | ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, |
| 1459 | port, 0); |
| 1460 | |
| 1461 | if (ret) { |
| 1462 | if (type == MWIFIEX_TYPE_CMD) |
| 1463 | adapter->cmd_sent = false; |
| 1464 | if (type == MWIFIEX_TYPE_DATA) |
| 1465 | adapter->data_sent = false; |
| 1466 | } else { |
| 1467 | if (type == MWIFIEX_TYPE_DATA) { |
| 1468 | if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port))) |
| 1469 | adapter->data_sent = true; |
| 1470 | else |
| 1471 | adapter->data_sent = false; |
| 1472 | } |
| 1473 | } |
| 1474 | |
| 1475 | return ret; |
| 1476 | } |
| 1477 | |
| 1478 | /* |
| 1479 | * This function allocates the MPA Tx and Rx buffers. |
| 1480 | */ |
| 1481 | static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter, |
| 1482 | u32 mpa_tx_buf_size, u32 mpa_rx_buf_size) |
| 1483 | { |
| 1484 | struct sdio_mmc_card *card = adapter->card; |
| 1485 | int ret = 0; |
| 1486 | |
| 1487 | card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL); |
| 1488 | if (!card->mpa_tx.buf) { |
| 1489 | dev_err(adapter->dev, "could not alloc buffer for MP-A TX\n"); |
| 1490 | ret = -1; |
| 1491 | goto error; |
| 1492 | } |
| 1493 | |
| 1494 | card->mpa_tx.buf_size = mpa_tx_buf_size; |
| 1495 | |
| 1496 | card->mpa_rx.buf = kzalloc(mpa_rx_buf_size, GFP_KERNEL); |
| 1497 | if (!card->mpa_rx.buf) { |
| 1498 | dev_err(adapter->dev, "could not alloc buffer for MP-A RX\n"); |
| 1499 | ret = -1; |
| 1500 | goto error; |
| 1501 | } |
| 1502 | |
| 1503 | card->mpa_rx.buf_size = mpa_rx_buf_size; |
| 1504 | |
| 1505 | error: |
| 1506 | if (ret) { |
| 1507 | kfree(card->mpa_tx.buf); |
| 1508 | kfree(card->mpa_rx.buf); |
| 1509 | } |
| 1510 | |
| 1511 | return ret; |
| 1512 | } |
| 1513 | |
| 1514 | /* |
| 1515 | * This function unregisters the SDIO device. |
| 1516 | * |
| 1517 | * The SDIO IRQ is released, the function is disabled and driver |
| 1518 | * data is set to null. |
| 1519 | */ |
| 1520 | static void |
| 1521 | mwifiex_unregister_dev(struct mwifiex_adapter *adapter) |
| 1522 | { |
| 1523 | struct sdio_mmc_card *card = adapter->card; |
| 1524 | |
| 1525 | if (adapter->card) { |
| 1526 | /* Release the SDIO IRQ */ |
| 1527 | sdio_claim_host(card->func); |
| 1528 | sdio_release_irq(card->func); |
| 1529 | sdio_disable_func(card->func); |
| 1530 | sdio_release_host(card->func); |
| 1531 | sdio_set_drvdata(card->func, NULL); |
| 1532 | } |
| 1533 | } |
| 1534 | |
| 1535 | /* |
| 1536 | * This function registers the SDIO device. |
| 1537 | * |
| 1538 | * SDIO IRQ is claimed, block size is set and driver data is initialized. |
| 1539 | */ |
| 1540 | static int mwifiex_register_dev(struct mwifiex_adapter *adapter) |
| 1541 | { |
| 1542 | int ret = 0; |
| 1543 | struct sdio_mmc_card *card = adapter->card; |
| 1544 | struct sdio_func *func = card->func; |
| 1545 | |
| 1546 | /* save adapter pointer in card */ |
| 1547 | card->adapter = adapter; |
| 1548 | |
| 1549 | sdio_claim_host(func); |
| 1550 | |
| 1551 | /* Request the SDIO IRQ */ |
| 1552 | ret = sdio_claim_irq(func, mwifiex_sdio_interrupt); |
| 1553 | if (ret) { |
| 1554 | pr_err("claim irq failed: ret=%d\n", ret); |
| 1555 | goto disable_func; |
| 1556 | } |
| 1557 | |
| 1558 | /* Set block size */ |
| 1559 | ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE); |
| 1560 | if (ret) { |
| 1561 | pr_err("cannot set SDIO block size\n"); |
| 1562 | ret = -1; |
| 1563 | goto release_irq; |
| 1564 | } |
| 1565 | |
| 1566 | sdio_release_host(func); |
| 1567 | sdio_set_drvdata(func, card); |
| 1568 | |
| 1569 | adapter->dev = &func->dev; |
Amitkumar Karwar | 4a7f5db | 2011-05-23 18:00:17 -0700 | [diff] [blame] | 1570 | strcpy(adapter->fw_name, SD8787_DEFAULT_FW_NAME); |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 1571 | |
| 1572 | return 0; |
| 1573 | |
| 1574 | release_irq: |
| 1575 | sdio_release_irq(func); |
| 1576 | disable_func: |
| 1577 | sdio_disable_func(func); |
| 1578 | sdio_release_host(func); |
| 1579 | adapter->card = NULL; |
| 1580 | |
| 1581 | return -1; |
| 1582 | } |
| 1583 | |
| 1584 | /* |
| 1585 | * This function initializes the SDIO driver. |
| 1586 | * |
| 1587 | * The following initializations steps are followed - |
| 1588 | * - Read the Host interrupt status register to acknowledge |
| 1589 | * the first interrupt got from bootloader |
| 1590 | * - Disable host interrupt mask register |
| 1591 | * - Get SDIO port |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 1592 | * - Initialize SDIO variables in card |
| 1593 | * - Allocate MP registers |
| 1594 | * - Allocate MPA Tx and Rx buffers |
| 1595 | */ |
| 1596 | static int mwifiex_init_sdio(struct mwifiex_adapter *adapter) |
| 1597 | { |
| 1598 | struct sdio_mmc_card *card = adapter->card; |
| 1599 | int ret; |
Yogesh Ashok Powar | 270e58e | 2011-05-03 20:11:46 -0700 | [diff] [blame] | 1600 | u32 sdio_ireg; |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 1601 | |
| 1602 | /* |
| 1603 | * Read the HOST_INT_STATUS_REG for ACK the first interrupt got |
| 1604 | * from the bootloader. If we don't do this we get a interrupt |
| 1605 | * as soon as we register the irq. |
| 1606 | */ |
| 1607 | mwifiex_read_reg(adapter, HOST_INTSTATUS_REG, &sdio_ireg); |
| 1608 | |
| 1609 | /* Disable host interrupt mask register for SDIO */ |
| 1610 | mwifiex_sdio_disable_host_int(adapter); |
| 1611 | |
| 1612 | /* Get SDIO ioport */ |
| 1613 | mwifiex_init_sdio_ioport(adapter); |
| 1614 | |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 1615 | /* Initialize SDIO variables in card */ |
| 1616 | card->mp_rd_bitmap = 0; |
| 1617 | card->mp_wr_bitmap = 0; |
| 1618 | card->curr_rd_port = 1; |
| 1619 | card->curr_wr_port = 1; |
| 1620 | |
| 1621 | card->mp_data_port_mask = DATA_PORT_MASK; |
| 1622 | |
| 1623 | card->mpa_tx.buf_len = 0; |
| 1624 | card->mpa_tx.pkt_cnt = 0; |
| 1625 | card->mpa_tx.start_port = 0; |
| 1626 | |
| 1627 | card->mpa_tx.enabled = 0; |
| 1628 | card->mpa_tx.pkt_aggr_limit = SDIO_MP_AGGR_DEF_PKT_LIMIT; |
| 1629 | |
| 1630 | card->mpa_rx.buf_len = 0; |
| 1631 | card->mpa_rx.pkt_cnt = 0; |
| 1632 | card->mpa_rx.start_port = 0; |
| 1633 | |
| 1634 | card->mpa_rx.enabled = 0; |
| 1635 | card->mpa_rx.pkt_aggr_limit = SDIO_MP_AGGR_DEF_PKT_LIMIT; |
| 1636 | |
| 1637 | /* Allocate buffers for SDIO MP-A */ |
| 1638 | card->mp_regs = kzalloc(MAX_MP_REGS, GFP_KERNEL); |
| 1639 | if (!card->mp_regs) { |
| 1640 | dev_err(adapter->dev, "failed to alloc mp_regs\n"); |
Christoph Fritz | b53575e | 2011-05-08 22:50:09 +0200 | [diff] [blame] | 1641 | return -ENOMEM; |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 1642 | } |
| 1643 | |
| 1644 | ret = mwifiex_alloc_sdio_mpa_buffers(adapter, |
| 1645 | SDIO_MP_TX_AGGR_DEF_BUF_SIZE, |
| 1646 | SDIO_MP_RX_AGGR_DEF_BUF_SIZE); |
| 1647 | if (ret) { |
| 1648 | dev_err(adapter->dev, "failed to alloc sdio mp-a buffers\n"); |
| 1649 | kfree(card->mp_regs); |
| 1650 | return -1; |
| 1651 | } |
| 1652 | |
| 1653 | return ret; |
| 1654 | } |
| 1655 | |
| 1656 | /* |
| 1657 | * This function resets the MPA Tx and Rx buffers. |
| 1658 | */ |
| 1659 | static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter) |
| 1660 | { |
| 1661 | struct sdio_mmc_card *card = adapter->card; |
| 1662 | |
| 1663 | MP_TX_AGGR_BUF_RESET(card); |
| 1664 | MP_RX_AGGR_BUF_RESET(card); |
| 1665 | } |
| 1666 | |
| 1667 | /* |
| 1668 | * This function cleans up the allocated card buffers. |
| 1669 | * |
| 1670 | * The following are freed by this function - |
| 1671 | * - MP registers |
| 1672 | * - MPA Tx buffer |
| 1673 | * - MPA Rx buffer |
| 1674 | */ |
| 1675 | static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter) |
| 1676 | { |
| 1677 | struct sdio_mmc_card *card = adapter->card; |
| 1678 | |
| 1679 | kfree(card->mp_regs); |
| 1680 | kfree(card->mpa_tx.buf); |
| 1681 | kfree(card->mpa_rx.buf); |
| 1682 | } |
| 1683 | |
| 1684 | /* |
| 1685 | * This function updates the MP end port in card. |
| 1686 | */ |
| 1687 | static void |
| 1688 | mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port) |
| 1689 | { |
| 1690 | struct sdio_mmc_card *card = adapter->card; |
| 1691 | int i; |
| 1692 | |
| 1693 | card->mp_end_port = port; |
| 1694 | |
| 1695 | card->mp_data_port_mask = DATA_PORT_MASK; |
| 1696 | |
| 1697 | for (i = 1; i <= MAX_PORT - card->mp_end_port; i++) |
| 1698 | card->mp_data_port_mask &= ~(1 << (MAX_PORT - i)); |
| 1699 | |
| 1700 | card->curr_wr_port = 1; |
| 1701 | |
| 1702 | dev_dbg(adapter->dev, "cmd: mp_end_port %d, data port mask 0x%x\n", |
| 1703 | port, card->mp_data_port_mask); |
| 1704 | } |
| 1705 | |
| 1706 | static struct mwifiex_if_ops sdio_ops = { |
| 1707 | .init_if = mwifiex_init_sdio, |
| 1708 | .cleanup_if = mwifiex_cleanup_sdio, |
| 1709 | .check_fw_status = mwifiex_check_fw_status, |
| 1710 | .prog_fw = mwifiex_prog_fw_w_helper, |
| 1711 | .register_dev = mwifiex_register_dev, |
| 1712 | .unregister_dev = mwifiex_unregister_dev, |
| 1713 | .enable_int = mwifiex_sdio_enable_host_int, |
| 1714 | .process_int_status = mwifiex_process_int_status, |
| 1715 | .host_to_card = mwifiex_sdio_host_to_card, |
| 1716 | .wakeup = mwifiex_pm_wakeup_card, |
| 1717 | .wakeup_complete = mwifiex_pm_wakeup_card_complete, |
| 1718 | |
| 1719 | /* SDIO specific */ |
| 1720 | .update_mp_end_port = mwifiex_update_mp_end_port, |
| 1721 | .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf, |
| 1722 | }; |
| 1723 | |
| 1724 | /* |
| 1725 | * This function initializes the SDIO driver. |
| 1726 | * |
| 1727 | * This initiates the semaphore and registers the device with |
| 1728 | * SDIO bus. |
| 1729 | */ |
| 1730 | static int |
| 1731 | mwifiex_sdio_init_module(void) |
| 1732 | { |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 1733 | sema_init(&add_remove_card_sem, 1); |
| 1734 | |
Amitkumar Karwar | 287546d | 2011-06-08 20:39:20 +0530 | [diff] [blame] | 1735 | /* Clear the flag in case user removes the card. */ |
| 1736 | user_rmmod = 0; |
| 1737 | |
Yogesh Ashok Powar | 636c459 | 2011-04-15 20:50:40 -0700 | [diff] [blame] | 1738 | return sdio_register_driver(&mwifiex_sdio); |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 1739 | } |
| 1740 | |
| 1741 | /* |
| 1742 | * This function cleans up the SDIO driver. |
| 1743 | * |
| 1744 | * The following major steps are followed for cleanup - |
| 1745 | * - Resume the device if its suspended |
| 1746 | * - Disconnect the device if connected |
| 1747 | * - Shutdown the firmware |
| 1748 | * - Unregister the device from SDIO bus. |
| 1749 | */ |
| 1750 | static void |
| 1751 | mwifiex_sdio_cleanup_module(void) |
| 1752 | { |
Amitkumar Karwar | 287546d | 2011-06-08 20:39:20 +0530 | [diff] [blame] | 1753 | if (!down_interruptible(&add_remove_card_sem)) |
| 1754 | up(&add_remove_card_sem); |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 1755 | |
Amitkumar Karwar | 287546d | 2011-06-08 20:39:20 +0530 | [diff] [blame] | 1756 | /* Set the flag as user is removing this module. */ |
| 1757 | user_rmmod = 1; |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 1758 | |
Bing Zhao | 5e6e3a9 | 2011-03-21 18:00:50 -0700 | [diff] [blame] | 1759 | sdio_unregister_driver(&mwifiex_sdio); |
| 1760 | } |
| 1761 | |
| 1762 | module_init(mwifiex_sdio_init_module); |
| 1763 | module_exit(mwifiex_sdio_cleanup_module); |
| 1764 | |
| 1765 | MODULE_AUTHOR("Marvell International Ltd."); |
| 1766 | MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION); |
| 1767 | MODULE_VERSION(SDIO_VERSION); |
| 1768 | MODULE_LICENSE("GPL v2"); |
Amitkumar Karwar | 4a7f5db | 2011-05-23 18:00:17 -0700 | [diff] [blame] | 1769 | MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin"); |