| 1 | /****************************************************************************** |
| 2 | * |
| 3 | * This file is provided under a dual BSD/GPLv2 license. When using or |
| 4 | * redistributing this file, you may do so under either license. |
| 5 | * |
| 6 | * GPL LICENSE SUMMARY |
| 7 | * |
| 8 | * Copyright(c) 2007 - 2012 Intel Corporation. All rights reserved. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of version 2 of the GNU General Public License as |
| 12 | * published by the Free Software Foundation. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, but |
| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | * General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, |
| 22 | * USA |
| 23 | * |
| 24 | * The full GNU General Public License is included in this distribution |
| 25 | * in the file called LICENSE.GPL. |
| 26 | * |
| 27 | * Contact Information: |
| 28 | * Intel Linux Wireless <ilw@linux.intel.com> |
| 29 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| 30 | * |
| 31 | * BSD LICENSE |
| 32 | * |
| 33 | * Copyright(c) 2005 - 2012 Intel Corporation. All rights reserved. |
| 34 | * All rights reserved. |
| 35 | * |
| 36 | * Redistribution and use in source and binary forms, with or without |
| 37 | * modification, are permitted provided that the following conditions |
| 38 | * are met: |
| 39 | * |
| 40 | * * Redistributions of source code must retain the above copyright |
| 41 | * notice, this list of conditions and the following disclaimer. |
| 42 | * * Redistributions in binary form must reproduce the above copyright |
| 43 | * notice, this list of conditions and the following disclaimer in |
| 44 | * the documentation and/or other materials provided with the |
| 45 | * distribution. |
| 46 | * * Neither the name Intel Corporation nor the names of its |
| 47 | * contributors may be used to endorse or promote products derived |
| 48 | * from this software without specific prior written permission. |
| 49 | * |
| 50 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 51 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 52 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 53 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 54 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 55 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 56 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 57 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 58 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 59 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 60 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 61 | * |
| 62 | *****************************************************************************/ |
| 63 | #ifndef __iwl_trans_h__ |
| 64 | #define __iwl_trans_h__ |
| 65 | |
| 66 | #include <linux/ieee80211.h> |
| 67 | #include <linux/mm.h> /* for page_address */ |
| 68 | |
| 69 | #include "iwl-debug.h" |
| 70 | #include "iwl-config.h" |
| 71 | #include "iwl-fw.h" |
| 72 | |
| 73 | /** |
| 74 | * DOC: Transport layer - what is it ? |
| 75 | * |
| 76 | * The tranport layer is the layer that deals with the HW directly. It provides |
| 77 | * an abstraction of the underlying HW to the upper layer. The transport layer |
| 78 | * doesn't provide any policy, algorithm or anything of this kind, but only |
| 79 | * mechanisms to make the HW do something.It is not completely stateless but |
| 80 | * close to it. |
| 81 | * We will have an implementation for each different supported bus. |
| 82 | */ |
| 83 | |
| 84 | /** |
| 85 | * DOC: Life cycle of the transport layer |
| 86 | * |
| 87 | * The transport layer has a very precise life cycle. |
| 88 | * |
| 89 | * 1) A helper function is called during the module initialization and |
| 90 | * registers the bus driver's ops with the transport's alloc function. |
| 91 | * 2) Bus's probe calls to the transport layer's allocation functions. |
| 92 | * Of course this function is bus specific. |
| 93 | * 3) This allocation functions will spawn the upper layer which will |
| 94 | * register mac80211. |
| 95 | * |
| 96 | * 4) At some point (i.e. mac80211's start call), the op_mode will call |
| 97 | * the following sequence: |
| 98 | * start_hw |
| 99 | * start_fw |
| 100 | * |
| 101 | * 5) Then when finished (or reset): |
| 102 | * stop_fw (a.k.a. stop device for the moment) |
| 103 | * stop_hw |
| 104 | * |
| 105 | * 6) Eventually, the free function will be called. |
| 106 | */ |
| 107 | |
| 108 | /** |
| 109 | * DOC: Host command section |
| 110 | * |
| 111 | * A host command is a commaned issued by the upper layer to the fw. There are |
| 112 | * several versions of fw that have several APIs. The transport layer is |
| 113 | * completely agnostic to these differences. |
| 114 | * The transport does provide helper functionnality (i.e. SYNC / ASYNC mode), |
| 115 | */ |
| 116 | #define SEQ_TO_SN(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4) |
| 117 | #define SN_TO_SEQ(ssn) (((ssn) << 4) & IEEE80211_SCTL_SEQ) |
| 118 | #define MAX_SN ((IEEE80211_SCTL_SEQ) >> 4) |
| 119 | #define SEQ_TO_QUEUE(s) (((s) >> 8) & 0x1f) |
| 120 | #define QUEUE_TO_SEQ(q) (((q) & 0x1f) << 8) |
| 121 | #define SEQ_TO_INDEX(s) ((s) & 0xff) |
| 122 | #define INDEX_TO_SEQ(i) ((i) & 0xff) |
| 123 | #define SEQ_RX_FRAME cpu_to_le16(0x8000) |
| 124 | |
| 125 | /** |
| 126 | * struct iwl_cmd_header |
| 127 | * |
| 128 | * This header format appears in the beginning of each command sent from the |
| 129 | * driver, and each response/notification received from uCode. |
| 130 | */ |
| 131 | struct iwl_cmd_header { |
| 132 | u8 cmd; /* Command ID: REPLY_RXON, etc. */ |
| 133 | u8 flags; /* 0:5 reserved, 6 abort, 7 internal */ |
| 134 | /* |
| 135 | * The driver sets up the sequence number to values of its choosing. |
| 136 | * uCode does not use this value, but passes it back to the driver |
| 137 | * when sending the response to each driver-originated command, so |
| 138 | * the driver can match the response to the command. Since the values |
| 139 | * don't get used by uCode, the driver may set up an arbitrary format. |
| 140 | * |
| 141 | * There is one exception: uCode sets bit 15 when it originates |
| 142 | * the response/notification, i.e. when the response/notification |
| 143 | * is not a direct response to a command sent by the driver. For |
| 144 | * example, uCode issues REPLY_RX when it sends a received frame |
| 145 | * to the driver; it is not a direct response to any driver command. |
| 146 | * |
| 147 | * The Linux driver uses the following format: |
| 148 | * |
| 149 | * 0:7 tfd index - position within TX queue |
| 150 | * 8:12 TX queue id |
| 151 | * 13:14 reserved |
| 152 | * 15 unsolicited RX or uCode-originated notification |
| 153 | */ |
| 154 | __le16 sequence; |
| 155 | } __packed; |
| 156 | |
| 157 | |
| 158 | #define FH_RSCSR_FRAME_SIZE_MSK 0x00003FFF /* bits 0-13 */ |
| 159 | #define FH_RSCSR_FRAME_INVALID 0x55550000 |
| 160 | #define FH_RSCSR_FRAME_ALIGN 0x40 |
| 161 | |
| 162 | struct iwl_rx_packet { |
| 163 | /* |
| 164 | * The first 4 bytes of the RX frame header contain both the RX frame |
| 165 | * size and some flags. |
| 166 | * Bit fields: |
| 167 | * 31: flag flush RB request |
| 168 | * 30: flag ignore TC (terminal counter) request |
| 169 | * 29: flag fast IRQ request |
| 170 | * 28-14: Reserved |
| 171 | * 13-00: RX frame size |
| 172 | */ |
| 173 | __le32 len_n_flags; |
| 174 | struct iwl_cmd_header hdr; |
| 175 | u8 data[]; |
| 176 | } __packed; |
| 177 | |
| 178 | /** |
| 179 | * enum CMD_MODE - how to send the host commands ? |
| 180 | * |
| 181 | * @CMD_SYNC: The caller will be stalled until the fw responds to the command |
| 182 | * @CMD_ASYNC: Return right away and don't want for the response |
| 183 | * @CMD_WANT_SKB: valid only with CMD_SYNC. The caller needs the buffer of the |
| 184 | * response. |
| 185 | * @CMD_ON_DEMAND: This command is sent by the test mode pipe. |
| 186 | */ |
| 187 | enum CMD_MODE { |
| 188 | CMD_SYNC = 0, |
| 189 | CMD_ASYNC = BIT(0), |
| 190 | CMD_WANT_SKB = BIT(1), |
| 191 | CMD_ON_DEMAND = BIT(2), |
| 192 | }; |
| 193 | |
| 194 | #define DEF_CMD_PAYLOAD_SIZE 320 |
| 195 | |
| 196 | /** |
| 197 | * struct iwl_device_cmd |
| 198 | * |
| 199 | * For allocation of the command and tx queues, this establishes the overall |
| 200 | * size of the largest command we send to uCode, except for commands that |
| 201 | * aren't fully copied and use other TFD space. |
| 202 | */ |
| 203 | struct iwl_device_cmd { |
| 204 | struct iwl_cmd_header hdr; /* uCode API */ |
| 205 | u8 payload[DEF_CMD_PAYLOAD_SIZE]; |
| 206 | } __packed; |
| 207 | |
| 208 | #define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_device_cmd)) |
| 209 | |
| 210 | #define IWL_MAX_CMD_TFDS 2 |
| 211 | |
| 212 | /** |
| 213 | * struct iwl_hcmd_dataflag - flag for each one of the chunks of the command |
| 214 | * |
| 215 | * IWL_HCMD_DFL_NOCOPY: By default, the command is copied to the host command's |
| 216 | * ring. The transport layer doesn't map the command's buffer to DMA, but |
| 217 | * rather copies it to an previously allocated DMA buffer. This flag tells |
| 218 | * the transport layer not to copy the command, but to map the existing |
| 219 | * buffer. This can save memcpy and is worth with very big comamnds. |
| 220 | */ |
| 221 | enum iwl_hcmd_dataflag { |
| 222 | IWL_HCMD_DFL_NOCOPY = BIT(0), |
| 223 | }; |
| 224 | |
| 225 | /** |
| 226 | * struct iwl_host_cmd - Host command to the uCode |
| 227 | * |
| 228 | * @data: array of chunks that composes the data of the host command |
| 229 | * @resp_pkt: response packet, if %CMD_WANT_SKB was set |
| 230 | * @_rx_page_order: (internally used to free response packet) |
| 231 | * @_rx_page_addr: (internally used to free response packet) |
| 232 | * @handler_status: return value of the handler of the command |
| 233 | * (put in setup_rx_handlers) - valid for SYNC mode only |
| 234 | * @flags: can be CMD_* |
| 235 | * @len: array of the lenths of the chunks in data |
| 236 | * @dataflags: IWL_HCMD_DFL_* |
| 237 | * @id: id of the host command |
| 238 | */ |
| 239 | struct iwl_host_cmd { |
| 240 | const void *data[IWL_MAX_CMD_TFDS]; |
| 241 | struct iwl_rx_packet *resp_pkt; |
| 242 | unsigned long _rx_page_addr; |
| 243 | u32 _rx_page_order; |
| 244 | int handler_status; |
| 245 | |
| 246 | u32 flags; |
| 247 | u16 len[IWL_MAX_CMD_TFDS]; |
| 248 | u8 dataflags[IWL_MAX_CMD_TFDS]; |
| 249 | u8 id; |
| 250 | }; |
| 251 | |
| 252 | static inline void iwl_free_resp(struct iwl_host_cmd *cmd) |
| 253 | { |
| 254 | free_pages(cmd->_rx_page_addr, cmd->_rx_page_order); |
| 255 | } |
| 256 | |
| 257 | struct iwl_rx_cmd_buffer { |
| 258 | struct page *_page; |
| 259 | int _offset; |
| 260 | bool _page_stolen; |
| 261 | unsigned int truesize; |
| 262 | }; |
| 263 | |
| 264 | static inline void *rxb_addr(struct iwl_rx_cmd_buffer *r) |
| 265 | { |
| 266 | return (void *)((unsigned long)page_address(r->_page) + r->_offset); |
| 267 | } |
| 268 | |
| 269 | static inline int rxb_offset(struct iwl_rx_cmd_buffer *r) |
| 270 | { |
| 271 | return r->_offset; |
| 272 | } |
| 273 | |
| 274 | static inline struct page *rxb_steal_page(struct iwl_rx_cmd_buffer *r) |
| 275 | { |
| 276 | r->_page_stolen = true; |
| 277 | get_page(r->_page); |
| 278 | return r->_page; |
| 279 | } |
| 280 | |
| 281 | #define MAX_NO_RECLAIM_CMDS 6 |
| 282 | |
| 283 | /* |
| 284 | * Maximum number of HW queues the transport layer |
| 285 | * currently supports |
| 286 | */ |
| 287 | #define IWL_MAX_HW_QUEUES 32 |
| 288 | |
| 289 | /** |
| 290 | * struct iwl_trans_config - transport configuration |
| 291 | * |
| 292 | * @op_mode: pointer to the upper layer. |
| 293 | * @queue_to_fifo: queue to FIFO mapping to set up by |
| 294 | * default |
| 295 | * @n_queue_to_fifo: number of queues to set up |
| 296 | * @cmd_queue: the index of the command queue. |
| 297 | * Must be set before start_fw. |
| 298 | * @no_reclaim_cmds: Some devices erroneously don't set the |
| 299 | * SEQ_RX_FRAME bit on some notifications, this is the |
| 300 | * list of such notifications to filter. Max length is |
| 301 | * %MAX_NO_RECLAIM_CMDS. |
| 302 | * @n_no_reclaim_cmds: # of commands in list |
| 303 | * @rx_buf_size_8k: 8 kB RX buffer size needed for A-MSDUs, |
| 304 | * if unset 4k will be the RX buffer size |
| 305 | * @queue_watchdog_timeout: time (in ms) after which queues |
| 306 | * are considered stuck and will trigger device restart |
| 307 | * @command_names: array of command names, must be 256 entries |
| 308 | * (one for each command); for debugging only |
| 309 | */ |
| 310 | struct iwl_trans_config { |
| 311 | struct iwl_op_mode *op_mode; |
| 312 | const u8 *queue_to_fifo; |
| 313 | u8 n_queue_to_fifo; |
| 314 | |
| 315 | u8 cmd_queue; |
| 316 | const u8 *no_reclaim_cmds; |
| 317 | int n_no_reclaim_cmds; |
| 318 | |
| 319 | bool rx_buf_size_8k; |
| 320 | unsigned int queue_watchdog_timeout; |
| 321 | const char **command_names; |
| 322 | }; |
| 323 | |
| 324 | struct iwl_trans; |
| 325 | |
| 326 | /** |
| 327 | * struct iwl_trans_ops - transport specific operations |
| 328 | * |
| 329 | * All the handlers MUST be implemented |
| 330 | * |
| 331 | * @start_hw: starts the HW- from that point on, the HW can send interrupts |
| 332 | * May sleep |
| 333 | * @stop_hw: stops the HW- from that point on, the HW will be in low power but |
| 334 | * will still issue interrupt if the HW RF kill is triggered unless |
| 335 | * op_mode_leaving is true. |
| 336 | * May sleep |
| 337 | * @start_fw: allocates and inits all the resources for the transport |
| 338 | * layer. Also kick a fw image. |
| 339 | * May sleep |
| 340 | * @fw_alive: called when the fw sends alive notification |
| 341 | * May sleep |
| 342 | * @stop_device:stops the whole device (embedded CPU put to reset) |
| 343 | * May sleep |
| 344 | * @wowlan_suspend: put the device into the correct mode for WoWLAN during |
| 345 | * suspend. This is optional, if not implemented WoWLAN will not be |
| 346 | * supported. This callback may sleep. |
| 347 | * @send_cmd:send a host command |
| 348 | * May sleep only if CMD_SYNC is set |
| 349 | * @tx: send an skb |
| 350 | * Must be atomic |
| 351 | * @reclaim: free packet until ssn. Returns a list of freed packets. |
| 352 | * Must be atomic |
| 353 | * @tx_agg_setup: setup a tx queue for AMPDU - will be called once the HW is |
| 354 | * ready and a successful ADDBA response has been received. |
| 355 | * May sleep |
| 356 | * @tx_agg_disable: de-configure a Tx queue to send AMPDUs |
| 357 | * Must be atomic |
| 358 | * @wait_tx_queue_empty: wait until all tx queues are empty |
| 359 | * May sleep |
| 360 | * @dbgfs_register: add the dbgfs files under this directory. Files will be |
| 361 | * automatically deleted. |
| 362 | * @suspend: stop the device unless WoWLAN is configured |
| 363 | * @resume: resume activity of the device |
| 364 | * @write8: write a u8 to a register at offset ofs from the BAR |
| 365 | * @write32: write a u32 to a register at offset ofs from the BAR |
| 366 | * @read32: read a u32 register at offset ofs from the BAR |
| 367 | * @configure: configure parameters required by the transport layer from |
| 368 | * the op_mode. May be called several times before start_fw, can't be |
| 369 | * called after that. |
| 370 | * @set_pmi: set the power pmi state |
| 371 | */ |
| 372 | struct iwl_trans_ops { |
| 373 | |
| 374 | int (*start_hw)(struct iwl_trans *iwl_trans); |
| 375 | void (*stop_hw)(struct iwl_trans *iwl_trans, bool op_mode_leaving); |
| 376 | int (*start_fw)(struct iwl_trans *trans, const struct fw_img *fw); |
| 377 | void (*fw_alive)(struct iwl_trans *trans); |
| 378 | void (*stop_device)(struct iwl_trans *trans); |
| 379 | |
| 380 | void (*wowlan_suspend)(struct iwl_trans *trans); |
| 381 | |
| 382 | int (*send_cmd)(struct iwl_trans *trans, struct iwl_host_cmd *cmd); |
| 383 | |
| 384 | int (*tx)(struct iwl_trans *trans, struct sk_buff *skb, |
| 385 | struct iwl_device_cmd *dev_cmd, int queue); |
| 386 | void (*reclaim)(struct iwl_trans *trans, int queue, int ssn, |
| 387 | struct sk_buff_head *skbs); |
| 388 | |
| 389 | void (*tx_agg_setup)(struct iwl_trans *trans, int queue, int fifo, |
| 390 | int sta_id, int tid, int frame_limit, u16 ssn); |
| 391 | void (*tx_agg_disable)(struct iwl_trans *trans, int queue); |
| 392 | |
| 393 | int (*dbgfs_register)(struct iwl_trans *trans, struct dentry* dir); |
| 394 | int (*wait_tx_queue_empty)(struct iwl_trans *trans); |
| 395 | #ifdef CONFIG_PM_SLEEP |
| 396 | int (*suspend)(struct iwl_trans *trans); |
| 397 | int (*resume)(struct iwl_trans *trans); |
| 398 | #endif |
| 399 | void (*write8)(struct iwl_trans *trans, u32 ofs, u8 val); |
| 400 | void (*write32)(struct iwl_trans *trans, u32 ofs, u32 val); |
| 401 | u32 (*read32)(struct iwl_trans *trans, u32 ofs); |
| 402 | void (*configure)(struct iwl_trans *trans, |
| 403 | const struct iwl_trans_config *trans_cfg); |
| 404 | void (*set_pmi)(struct iwl_trans *trans, bool state); |
| 405 | }; |
| 406 | |
| 407 | /** |
| 408 | * enum iwl_trans_state - state of the transport layer |
| 409 | * |
| 410 | * @IWL_TRANS_NO_FW: no fw has sent an alive response |
| 411 | * @IWL_TRANS_FW_ALIVE: a fw has sent an alive response |
| 412 | */ |
| 413 | enum iwl_trans_state { |
| 414 | IWL_TRANS_NO_FW = 0, |
| 415 | IWL_TRANS_FW_ALIVE = 1, |
| 416 | }; |
| 417 | |
| 418 | /** |
| 419 | * struct iwl_trans - transport common data |
| 420 | * |
| 421 | * @ops - pointer to iwl_trans_ops |
| 422 | * @op_mode - pointer to the op_mode |
| 423 | * @cfg - pointer to the configuration |
| 424 | * @reg_lock - protect hw register access |
| 425 | * @dev - pointer to struct device * that represents the device |
| 426 | * @hw_id: a u32 with the ID of the device / subdevice. |
| 427 | * Set during transport allocation. |
| 428 | * @hw_id_str: a string with info about HW ID. Set during transport allocation. |
| 429 | * @pm_support: set to true in start_hw if link pm is supported |
| 430 | * @wait_command_queue: the wait_queue for SYNC host commands |
| 431 | */ |
| 432 | struct iwl_trans { |
| 433 | const struct iwl_trans_ops *ops; |
| 434 | struct iwl_op_mode *op_mode; |
| 435 | const struct iwl_cfg *cfg; |
| 436 | enum iwl_trans_state state; |
| 437 | spinlock_t reg_lock; |
| 438 | |
| 439 | struct device *dev; |
| 440 | u32 hw_rev; |
| 441 | u32 hw_id; |
| 442 | char hw_id_str[52]; |
| 443 | |
| 444 | bool pm_support; |
| 445 | |
| 446 | wait_queue_head_t wait_command_queue; |
| 447 | |
| 448 | /* pointer to trans specific struct */ |
| 449 | /*Ensure that this pointer will always be aligned to sizeof pointer */ |
| 450 | char trans_specific[0] __aligned(sizeof(void *)); |
| 451 | }; |
| 452 | |
| 453 | static inline void iwl_trans_configure(struct iwl_trans *trans, |
| 454 | const struct iwl_trans_config *trans_cfg) |
| 455 | { |
| 456 | /* |
| 457 | * only set the op_mode for the moment. Later on, this function will do |
| 458 | * more |
| 459 | */ |
| 460 | trans->op_mode = trans_cfg->op_mode; |
| 461 | |
| 462 | trans->ops->configure(trans, trans_cfg); |
| 463 | } |
| 464 | |
| 465 | static inline int iwl_trans_start_hw(struct iwl_trans *trans) |
| 466 | { |
| 467 | might_sleep(); |
| 468 | |
| 469 | return trans->ops->start_hw(trans); |
| 470 | } |
| 471 | |
| 472 | static inline void iwl_trans_stop_hw(struct iwl_trans *trans, |
| 473 | bool op_mode_leaving) |
| 474 | { |
| 475 | might_sleep(); |
| 476 | |
| 477 | trans->ops->stop_hw(trans, op_mode_leaving); |
| 478 | |
| 479 | trans->state = IWL_TRANS_NO_FW; |
| 480 | } |
| 481 | |
| 482 | static inline void iwl_trans_fw_alive(struct iwl_trans *trans) |
| 483 | { |
| 484 | might_sleep(); |
| 485 | |
| 486 | trans->ops->fw_alive(trans); |
| 487 | |
| 488 | trans->state = IWL_TRANS_FW_ALIVE; |
| 489 | } |
| 490 | |
| 491 | static inline int iwl_trans_start_fw(struct iwl_trans *trans, |
| 492 | const struct fw_img *fw) |
| 493 | { |
| 494 | might_sleep(); |
| 495 | |
| 496 | return trans->ops->start_fw(trans, fw); |
| 497 | } |
| 498 | |
| 499 | static inline void iwl_trans_stop_device(struct iwl_trans *trans) |
| 500 | { |
| 501 | might_sleep(); |
| 502 | |
| 503 | trans->ops->stop_device(trans); |
| 504 | |
| 505 | trans->state = IWL_TRANS_NO_FW; |
| 506 | } |
| 507 | |
| 508 | static inline void iwl_trans_wowlan_suspend(struct iwl_trans *trans) |
| 509 | { |
| 510 | might_sleep(); |
| 511 | trans->ops->wowlan_suspend(trans); |
| 512 | } |
| 513 | |
| 514 | static inline int iwl_trans_send_cmd(struct iwl_trans *trans, |
| 515 | struct iwl_host_cmd *cmd) |
| 516 | { |
| 517 | WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE, |
| 518 | "%s bad state = %d", __func__, trans->state); |
| 519 | |
| 520 | return trans->ops->send_cmd(trans, cmd); |
| 521 | } |
| 522 | |
| 523 | static inline int iwl_trans_tx(struct iwl_trans *trans, struct sk_buff *skb, |
| 524 | struct iwl_device_cmd *dev_cmd, int queue) |
| 525 | { |
| 526 | WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE, |
| 527 | "%s bad state = %d", __func__, trans->state); |
| 528 | |
| 529 | return trans->ops->tx(trans, skb, dev_cmd, queue); |
| 530 | } |
| 531 | |
| 532 | static inline void iwl_trans_reclaim(struct iwl_trans *trans, int queue, |
| 533 | int ssn, struct sk_buff_head *skbs) |
| 534 | { |
| 535 | WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE, |
| 536 | "%s bad state = %d", __func__, trans->state); |
| 537 | |
| 538 | trans->ops->reclaim(trans, queue, ssn, skbs); |
| 539 | } |
| 540 | |
| 541 | static inline void iwl_trans_tx_agg_disable(struct iwl_trans *trans, int queue) |
| 542 | { |
| 543 | WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE, |
| 544 | "%s bad state = %d", __func__, trans->state); |
| 545 | |
| 546 | trans->ops->tx_agg_disable(trans, queue); |
| 547 | } |
| 548 | |
| 549 | static inline void iwl_trans_tx_agg_setup(struct iwl_trans *trans, int queue, |
| 550 | int fifo, int sta_id, int tid, |
| 551 | int frame_limit, u16 ssn) |
| 552 | { |
| 553 | might_sleep(); |
| 554 | |
| 555 | WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE, |
| 556 | "%s bad state = %d", __func__, trans->state); |
| 557 | |
| 558 | trans->ops->tx_agg_setup(trans, queue, fifo, sta_id, tid, |
| 559 | frame_limit, ssn); |
| 560 | } |
| 561 | |
| 562 | static inline int iwl_trans_wait_tx_queue_empty(struct iwl_trans *trans) |
| 563 | { |
| 564 | WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE, |
| 565 | "%s bad state = %d", __func__, trans->state); |
| 566 | |
| 567 | return trans->ops->wait_tx_queue_empty(trans); |
| 568 | } |
| 569 | |
| 570 | static inline int iwl_trans_dbgfs_register(struct iwl_trans *trans, |
| 571 | struct dentry *dir) |
| 572 | { |
| 573 | return trans->ops->dbgfs_register(trans, dir); |
| 574 | } |
| 575 | |
| 576 | #ifdef CONFIG_PM_SLEEP |
| 577 | static inline int iwl_trans_suspend(struct iwl_trans *trans) |
| 578 | { |
| 579 | return trans->ops->suspend(trans); |
| 580 | } |
| 581 | |
| 582 | static inline int iwl_trans_resume(struct iwl_trans *trans) |
| 583 | { |
| 584 | return trans->ops->resume(trans); |
| 585 | } |
| 586 | #endif |
| 587 | |
| 588 | static inline void iwl_trans_write8(struct iwl_trans *trans, u32 ofs, u8 val) |
| 589 | { |
| 590 | trans->ops->write8(trans, ofs, val); |
| 591 | } |
| 592 | |
| 593 | static inline void iwl_trans_write32(struct iwl_trans *trans, u32 ofs, u32 val) |
| 594 | { |
| 595 | trans->ops->write32(trans, ofs, val); |
| 596 | } |
| 597 | |
| 598 | static inline u32 iwl_trans_read32(struct iwl_trans *trans, u32 ofs) |
| 599 | { |
| 600 | return trans->ops->read32(trans, ofs); |
| 601 | } |
| 602 | |
| 603 | static inline void iwl_trans_set_pmi(struct iwl_trans *trans, bool state) |
| 604 | { |
| 605 | trans->ops->set_pmi(trans, state); |
| 606 | } |
| 607 | |
| 608 | /***************************************************** |
| 609 | * driver (transport) register/unregister functions |
| 610 | ******************************************************/ |
| 611 | int __must_check iwl_pci_register_driver(void); |
| 612 | void iwl_pci_unregister_driver(void); |
| 613 | |
| 614 | #endif /* __iwl_trans_h__ */ |