1 /******************************************************************************
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62 *****************************************************************************/
63 #ifndef __iwl_trans_h__
64 #define __iwl_trans_h__
66 #include <linux/ieee80211.h>
67 #include <linux/mm.h> /* for page_address */
68 #include <linux/lockdep.h>
70 #include "iwl-debug.h"
71 #include "iwl-config.h"
73 #include "iwl-op-mode.h"
76 * DOC: Transport layer - what is it ?
78 * The tranport layer is the layer that deals with the HW directly. It provides
79 * an abstraction of the underlying HW to the upper layer. The transport layer
80 * doesn't provide any policy, algorithm or anything of this kind, but only
81 * mechanisms to make the HW do something.It is not completely stateless but
83 * We will have an implementation for each different supported bus.
87 * DOC: Life cycle of the transport layer
89 * The transport layer has a very precise life cycle.
91 * 1) A helper function is called during the module initialization and
92 * registers the bus driver's ops with the transport's alloc function.
93 * 2) Bus's probe calls to the transport layer's allocation functions.
94 * Of course this function is bus specific.
95 * 3) This allocation functions will spawn the upper layer which will
98 * 4) At some point (i.e. mac80211's start call), the op_mode will call
99 * the following sequence:
103 * 5) Then when finished (or reset):
106 * 6) Eventually, the free function will be called.
110 * DOC: Host command section
112 * A host command is a commaned issued by the upper layer to the fw. There are
113 * several versions of fw that have several APIs. The transport layer is
114 * completely agnostic to these differences.
115 * The transport does provide helper functionnality (i.e. SYNC / ASYNC mode),
117 #define SEQ_TO_QUEUE(s) (((s) >> 8) & 0x1f)
118 #define QUEUE_TO_SEQ(q) (((q) & 0x1f) << 8)
119 #define SEQ_TO_INDEX(s) ((s) & 0xff)
120 #define INDEX_TO_SEQ(i) ((i) & 0xff)
121 #define SEQ_RX_FRAME cpu_to_le16(0x8000)
124 * struct iwl_cmd_header
126 * This header format appears in the beginning of each command sent from the
127 * driver, and each response/notification received from uCode.
129 struct iwl_cmd_header {
130 u8 cmd; /* Command ID: REPLY_RXON, etc. */
131 u8 flags; /* 0:5 reserved, 6 abort, 7 internal */
133 * The driver sets up the sequence number to values of its choosing.
134 * uCode does not use this value, but passes it back to the driver
135 * when sending the response to each driver-originated command, so
136 * the driver can match the response to the command. Since the values
137 * don't get used by uCode, the driver may set up an arbitrary format.
139 * There is one exception: uCode sets bit 15 when it originates
140 * the response/notification, i.e. when the response/notification
141 * is not a direct response to a command sent by the driver. For
142 * example, uCode issues REPLY_RX when it sends a received frame
143 * to the driver; it is not a direct response to any driver command.
145 * The Linux driver uses the following format:
147 * 0:7 tfd index - position within TX queue
150 * 15 unsolicited RX or uCode-originated notification
155 /* iwl_cmd_header flags value */
156 #define IWL_CMD_FAILED_MSK 0x40
159 #define FH_RSCSR_FRAME_SIZE_MSK 0x00003FFF /* bits 0-13 */
160 #define FH_RSCSR_FRAME_INVALID 0x55550000
161 #define FH_RSCSR_FRAME_ALIGN 0x40
163 struct iwl_rx_packet {
165 * The first 4 bytes of the RX frame header contain both the RX frame
166 * size and some flags.
168 * 31: flag flush RB request
169 * 30: flag ignore TC (terminal counter) request
170 * 29: flag fast IRQ request
172 * 13-00: RX frame size
175 struct iwl_cmd_header hdr;
180 * enum CMD_MODE - how to send the host commands ?
182 * @CMD_SYNC: The caller will be stalled until the fw responds to the command
183 * @CMD_ASYNC: Return right away and don't wait for the response
184 * @CMD_WANT_SKB: valid only with CMD_SYNC. The caller needs the buffer of the
185 * response. The caller needs to call iwl_free_resp when done.
190 CMD_WANT_SKB = BIT(1),
191 CMD_SEND_IN_RFKILL = BIT(2),
194 #define DEF_CMD_PAYLOAD_SIZE 320
197 * struct iwl_device_cmd
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.
203 struct iwl_device_cmd {
204 struct iwl_cmd_header hdr; /* uCode API */
205 u8 payload[DEF_CMD_PAYLOAD_SIZE];
208 #define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_device_cmd))
211 * number of transfer buffers (fragments) per transmit frame descriptor;
212 * this is just the driver's idea, the hardware supports 20
214 #define IWL_MAX_CMD_TBS_PER_TFD 2
217 * struct iwl_hcmd_dataflag - flag for each one of the chunks of the command
219 * @IWL_HCMD_DFL_NOCOPY: By default, the command is copied to the host command's
220 * ring. The transport layer doesn't map the command's buffer to DMA, but
221 * rather copies it to a previously allocated DMA buffer. This flag tells
222 * the transport layer not to copy the command, but to map the existing
223 * buffer (that is passed in) instead. This saves the memcpy and allows
224 * commands that are bigger than the fixed buffer to be submitted.
225 * Note that a TFD entry after a NOCOPY one cannot be a normal copied one.
226 * @IWL_HCMD_DFL_DUP: Only valid without NOCOPY, duplicate the memory for this
227 * chunk internally and free it again after the command completes. This
228 * can (currently) be used only once per command.
229 * Note that a TFD entry after a DUP one cannot be a normal copied one.
231 enum iwl_hcmd_dataflag {
232 IWL_HCMD_DFL_NOCOPY = BIT(0),
233 IWL_HCMD_DFL_DUP = BIT(1),
237 * struct iwl_host_cmd - Host command to the uCode
239 * @data: array of chunks that composes the data of the host command
240 * @resp_pkt: response packet, if %CMD_WANT_SKB was set
241 * @_rx_page_order: (internally used to free response packet)
242 * @_rx_page_addr: (internally used to free response packet)
243 * @handler_status: return value of the handler of the command
244 * (put in setup_rx_handlers) - valid for SYNC mode only
245 * @flags: can be CMD_*
246 * @len: array of the lengths of the chunks in data
247 * @dataflags: IWL_HCMD_DFL_*
248 * @id: id of the host command
250 struct iwl_host_cmd {
251 const void *data[IWL_MAX_CMD_TBS_PER_TFD];
252 struct iwl_rx_packet *resp_pkt;
253 unsigned long _rx_page_addr;
258 u16 len[IWL_MAX_CMD_TBS_PER_TFD];
259 u8 dataflags[IWL_MAX_CMD_TBS_PER_TFD];
263 static inline void iwl_free_resp(struct iwl_host_cmd *cmd)
265 free_pages(cmd->_rx_page_addr, cmd->_rx_page_order);
268 struct iwl_rx_cmd_buffer {
273 unsigned int truesize;
276 static inline void *rxb_addr(struct iwl_rx_cmd_buffer *r)
278 return (void *)((unsigned long)page_address(r->_page) + r->_offset);
281 static inline int rxb_offset(struct iwl_rx_cmd_buffer *r)
286 static inline struct page *rxb_steal_page(struct iwl_rx_cmd_buffer *r)
288 r->_page_stolen = true;
293 static inline void iwl_free_rxb(struct iwl_rx_cmd_buffer *r)
295 __free_pages(r->_page, r->_rx_page_order);
298 #define MAX_NO_RECLAIM_CMDS 6
300 #define IWL_MASK(lo, hi) ((1 << (hi)) | ((1 << (hi)) - (1 << (lo))))
303 * Maximum number of HW queues the transport layer
306 #define IWL_MAX_HW_QUEUES 32
307 #define IWL_MAX_TID_COUNT 8
308 #define IWL_FRAME_LIMIT 64
311 * enum iwl_wowlan_status - WoWLAN image/device status
312 * @IWL_D3_STATUS_ALIVE: firmware is still running after resume
313 * @IWL_D3_STATUS_RESET: device was reset while suspended
321 * enum iwl_trans_status: transport status flags
322 * @STATUS_SYNC_HCMD_ACTIVE: a SYNC command is being processed
323 * @STATUS_DEVICE_ENABLED: APM is enabled
324 * @STATUS_TPOWER_PMI: the device might be asleep (need to wake it up)
325 * @STATUS_INT_ENABLED: interrupts are enabled
326 * @STATUS_RFKILL: the HW RFkill switch is in KILL position
327 * @STATUS_FW_ERROR: the fw is in error state
329 enum iwl_trans_status {
330 STATUS_SYNC_HCMD_ACTIVE,
331 STATUS_DEVICE_ENABLED,
339 * struct iwl_trans_config - transport configuration
341 * @op_mode: pointer to the upper layer.
342 * @cmd_queue: the index of the command queue.
343 * Must be set before start_fw.
344 * @cmd_fifo: the fifo for host commands
345 * @no_reclaim_cmds: Some devices erroneously don't set the
346 * SEQ_RX_FRAME bit on some notifications, this is the
347 * list of such notifications to filter. Max length is
348 * %MAX_NO_RECLAIM_CMDS.
349 * @n_no_reclaim_cmds: # of commands in list
350 * @rx_buf_size_8k: 8 kB RX buffer size needed for A-MSDUs,
351 * if unset 4k will be the RX buffer size
352 * @bc_table_dword: set to true if the BC table expects the byte count to be
353 * in DWORD (as opposed to bytes)
354 * @queue_watchdog_timeout: time (in ms) after which queues
355 * are considered stuck and will trigger device restart
356 * @command_names: array of command names, must be 256 entries
357 * (one for each command); for debugging only
359 struct iwl_trans_config {
360 struct iwl_op_mode *op_mode;
364 const u8 *no_reclaim_cmds;
365 unsigned int n_no_reclaim_cmds;
369 unsigned int queue_watchdog_timeout;
370 const char **command_names;
376 * struct iwl_trans_ops - transport specific operations
378 * All the handlers MUST be implemented
380 * @start_hw: starts the HW- from that point on, the HW can send interrupts
382 * @op_mode_leave: Turn off the HW RF kill indication if on
384 * @start_fw: allocates and inits all the resources for the transport
385 * layer. Also kick a fw image.
387 * @fw_alive: called when the fw sends alive notification. If the fw provides
388 * the SCD base address in SRAM, then provide it here, or 0 otherwise.
390 * @stop_device: stops the whole device (embedded CPU put to reset) and stops
391 * the HW. From that point on, the HW will be in low power but will still
392 * issue interrupt if the HW RF kill is triggered. This callback must do
393 * the right thing and not crash even if start_hw() was called but not
394 * start_fw(). May sleep
395 * @d3_suspend: put the device into the correct mode for WoWLAN during
396 * suspend. This is optional, if not implemented WoWLAN will not be
397 * supported. This callback may sleep.
398 * @d3_resume: resume the device after WoWLAN, enabling the opmode to
399 * talk to the WoWLAN image to get its status. This is optional, if not
400 * implemented WoWLAN will not be supported. This callback may sleep.
401 * @send_cmd:send a host command. Must return -ERFKILL if RFkill is asserted.
402 * If RFkill is asserted in the middle of a SYNC host command, it must
403 * return -ERFKILL straight away.
404 * May sleep only if CMD_SYNC is set
407 * @reclaim: free packet until ssn. Returns a list of freed packets.
409 * @txq_enable: setup a queue. To setup an AC queue, use the
410 * iwl_trans_ac_txq_enable wrapper. fw_alive must have been called before
411 * this one. The op_mode must not configure the HCMD queue. May sleep.
412 * @txq_disable: de-configure a Tx queue to send AMPDUs
414 * @wait_tx_queue_empty: wait until all tx queues are empty
416 * @dbgfs_register: add the dbgfs files under this directory. Files will be
417 * automatically deleted.
418 * @write8: write a u8 to a register at offset ofs from the BAR
419 * @write32: write a u32 to a register at offset ofs from the BAR
420 * @read32: read a u32 register at offset ofs from the BAR
421 * @read_prph: read a DWORD from a periphery register
422 * @write_prph: write a DWORD to a periphery register
423 * @read_mem: read device's SRAM in DWORD
424 * @write_mem: write device's SRAM in DWORD. If %buf is %NULL, then the memory
426 * @configure: configure parameters required by the transport layer from
427 * the op_mode. May be called several times before start_fw, can't be
429 * @set_pmi: set the power pmi state
430 * @grab_nic_access: wake the NIC to be able to access non-HBUS regs.
431 * Sleeping is not allowed between grab_nic_access and
432 * release_nic_access.
433 * @release_nic_access: let the NIC go to sleep. The "flags" parameter
434 * must be the same one that was sent before to the grab_nic_access.
435 * @set_bits_mask - set SRAM register according to value and mask.
437 struct iwl_trans_ops {
439 int (*start_hw)(struct iwl_trans *iwl_trans);
440 void (*op_mode_leave)(struct iwl_trans *iwl_trans);
441 int (*start_fw)(struct iwl_trans *trans, const struct fw_img *fw,
443 void (*fw_alive)(struct iwl_trans *trans, u32 scd_addr);
444 void (*stop_device)(struct iwl_trans *trans);
446 void (*d3_suspend)(struct iwl_trans *trans, bool test);
447 int (*d3_resume)(struct iwl_trans *trans, enum iwl_d3_status *status,
450 int (*send_cmd)(struct iwl_trans *trans, struct iwl_host_cmd *cmd);
452 int (*tx)(struct iwl_trans *trans, struct sk_buff *skb,
453 struct iwl_device_cmd *dev_cmd, int queue);
454 void (*reclaim)(struct iwl_trans *trans, int queue, int ssn,
455 struct sk_buff_head *skbs);
457 void (*txq_enable)(struct iwl_trans *trans, int queue, int fifo,
458 int sta_id, int tid, int frame_limit, u16 ssn);
459 void (*txq_disable)(struct iwl_trans *trans, int queue);
461 int (*dbgfs_register)(struct iwl_trans *trans, struct dentry* dir);
462 int (*wait_tx_queue_empty)(struct iwl_trans *trans);
464 void (*write8)(struct iwl_trans *trans, u32 ofs, u8 val);
465 void (*write32)(struct iwl_trans *trans, u32 ofs, u32 val);
466 u32 (*read32)(struct iwl_trans *trans, u32 ofs);
467 u32 (*read_prph)(struct iwl_trans *trans, u32 ofs);
468 void (*write_prph)(struct iwl_trans *trans, u32 ofs, u32 val);
469 int (*read_mem)(struct iwl_trans *trans, u32 addr,
470 void *buf, int dwords);
471 int (*write_mem)(struct iwl_trans *trans, u32 addr,
472 const void *buf, int dwords);
473 void (*configure)(struct iwl_trans *trans,
474 const struct iwl_trans_config *trans_cfg);
475 void (*set_pmi)(struct iwl_trans *trans, bool state);
476 bool (*grab_nic_access)(struct iwl_trans *trans, bool silent,
477 unsigned long *flags);
478 void (*release_nic_access)(struct iwl_trans *trans,
479 unsigned long *flags);
480 void (*set_bits_mask)(struct iwl_trans *trans, u32 reg, u32 mask,
485 * enum iwl_trans_state - state of the transport layer
487 * @IWL_TRANS_NO_FW: no fw has sent an alive response
488 * @IWL_TRANS_FW_ALIVE: a fw has sent an alive response
490 enum iwl_trans_state {
492 IWL_TRANS_FW_ALIVE = 1,
496 * struct iwl_trans - transport common data
498 * @ops - pointer to iwl_trans_ops
499 * @op_mode - pointer to the op_mode
500 * @cfg - pointer to the configuration
501 * @status: a bit-mask of transport status flags
502 * @dev - pointer to struct device * that represents the device
503 * @hw_id: a u32 with the ID of the device / subdevice.
504 * Set during transport allocation.
505 * @hw_id_str: a string with info about HW ID. Set during transport allocation.
506 * @pm_support: set to true in start_hw if link pm is supported
507 * @dev_cmd_pool: pool for Tx cmd allocation - for internal use only.
508 * The user should use iwl_trans_{alloc,free}_tx_cmd.
509 * @dev_cmd_headroom: room needed for the transport's private use before the
510 * device_cmd for Tx - for internal use only
511 * The user should use iwl_trans_{alloc,free}_tx_cmd.
512 * @rx_mpdu_cmd: MPDU RX command ID, must be assigned by opmode before
513 * starting the firmware, used for tracing
514 * @rx_mpdu_cmd_hdr_size: used for tracing, amount of data before the
515 * start of the 802.11 header in the @rx_mpdu_cmd
518 const struct iwl_trans_ops *ops;
519 struct iwl_op_mode *op_mode;
520 const struct iwl_cfg *cfg;
521 enum iwl_trans_state state;
522 unsigned long status;
529 u8 rx_mpdu_cmd, rx_mpdu_cmd_hdr_size;
533 /* The following fields are internal only */
534 struct kmem_cache *dev_cmd_pool;
535 size_t dev_cmd_headroom;
536 char dev_cmd_pool_name[50];
538 struct dentry *dbgfs_dir;
540 #ifdef CONFIG_LOCKDEP
541 struct lockdep_map sync_cmd_lockdep_map;
544 /* pointer to trans specific struct */
545 /*Ensure that this pointer will always be aligned to sizeof pointer */
546 char trans_specific[0] __aligned(sizeof(void *));
549 static inline void iwl_trans_configure(struct iwl_trans *trans,
550 const struct iwl_trans_config *trans_cfg)
552 trans->op_mode = trans_cfg->op_mode;
554 trans->ops->configure(trans, trans_cfg);
557 static inline int iwl_trans_start_hw(struct iwl_trans *trans)
561 return trans->ops->start_hw(trans);
564 static inline void iwl_trans_op_mode_leave(struct iwl_trans *trans)
568 if (trans->ops->op_mode_leave)
569 trans->ops->op_mode_leave(trans);
571 trans->op_mode = NULL;
573 trans->state = IWL_TRANS_NO_FW;
576 static inline void iwl_trans_fw_alive(struct iwl_trans *trans, u32 scd_addr)
580 trans->state = IWL_TRANS_FW_ALIVE;
582 trans->ops->fw_alive(trans, scd_addr);
585 static inline int iwl_trans_start_fw(struct iwl_trans *trans,
586 const struct fw_img *fw,
591 WARN_ON_ONCE(!trans->rx_mpdu_cmd);
593 clear_bit(STATUS_FW_ERROR, &trans->status);
594 return trans->ops->start_fw(trans, fw, run_in_rfkill);
597 static inline void iwl_trans_stop_device(struct iwl_trans *trans)
601 trans->ops->stop_device(trans);
603 trans->state = IWL_TRANS_NO_FW;
606 static inline void iwl_trans_d3_suspend(struct iwl_trans *trans, bool test)
609 trans->ops->d3_suspend(trans, test);
612 static inline int iwl_trans_d3_resume(struct iwl_trans *trans,
613 enum iwl_d3_status *status,
617 return trans->ops->d3_resume(trans, status, test);
620 static inline int iwl_trans_send_cmd(struct iwl_trans *trans,
621 struct iwl_host_cmd *cmd)
625 if (unlikely(test_bit(STATUS_FW_ERROR, &trans->status)))
628 if (unlikely(trans->state != IWL_TRANS_FW_ALIVE)) {
629 IWL_ERR(trans, "%s bad state = %d", __func__, trans->state);
633 if (!(cmd->flags & CMD_ASYNC))
634 lock_map_acquire_read(&trans->sync_cmd_lockdep_map);
636 ret = trans->ops->send_cmd(trans, cmd);
638 if (!(cmd->flags & CMD_ASYNC))
639 lock_map_release(&trans->sync_cmd_lockdep_map);
644 static inline struct iwl_device_cmd *
645 iwl_trans_alloc_tx_cmd(struct iwl_trans *trans)
647 u8 *dev_cmd_ptr = kmem_cache_alloc(trans->dev_cmd_pool, GFP_ATOMIC);
649 if (unlikely(dev_cmd_ptr == NULL))
652 return (struct iwl_device_cmd *)
653 (dev_cmd_ptr + trans->dev_cmd_headroom);
656 static inline void iwl_trans_free_tx_cmd(struct iwl_trans *trans,
657 struct iwl_device_cmd *dev_cmd)
659 u8 *dev_cmd_ptr = (u8 *)dev_cmd - trans->dev_cmd_headroom;
661 kmem_cache_free(trans->dev_cmd_pool, dev_cmd_ptr);
664 static inline int iwl_trans_tx(struct iwl_trans *trans, struct sk_buff *skb,
665 struct iwl_device_cmd *dev_cmd, int queue)
667 if (unlikely(test_bit(STATUS_FW_ERROR, &trans->status)))
670 if (unlikely(trans->state != IWL_TRANS_FW_ALIVE))
671 IWL_ERR(trans, "%s bad state = %d", __func__, trans->state);
673 return trans->ops->tx(trans, skb, dev_cmd, queue);
676 static inline void iwl_trans_reclaim(struct iwl_trans *trans, int queue,
677 int ssn, struct sk_buff_head *skbs)
679 if (unlikely(trans->state != IWL_TRANS_FW_ALIVE))
680 IWL_ERR(trans, "%s bad state = %d", __func__, trans->state);
682 trans->ops->reclaim(trans, queue, ssn, skbs);
685 static inline void iwl_trans_txq_disable(struct iwl_trans *trans, int queue)
687 if (unlikely(trans->state != IWL_TRANS_FW_ALIVE))
688 IWL_ERR(trans, "%s bad state = %d", __func__, trans->state);
690 trans->ops->txq_disable(trans, queue);
693 static inline void iwl_trans_txq_enable(struct iwl_trans *trans, int queue,
694 int fifo, int sta_id, int tid,
695 int frame_limit, u16 ssn)
699 if (unlikely((trans->state != IWL_TRANS_FW_ALIVE)))
700 IWL_ERR(trans, "%s bad state = %d", __func__, trans->state);
702 trans->ops->txq_enable(trans, queue, fifo, sta_id, tid,
706 static inline void iwl_trans_ac_txq_enable(struct iwl_trans *trans, int queue,
709 iwl_trans_txq_enable(trans, queue, fifo, -1,
710 IWL_MAX_TID_COUNT, IWL_FRAME_LIMIT, 0);
713 static inline int iwl_trans_wait_tx_queue_empty(struct iwl_trans *trans)
715 if (unlikely(trans->state != IWL_TRANS_FW_ALIVE))
716 IWL_ERR(trans, "%s bad state = %d", __func__, trans->state);
718 return trans->ops->wait_tx_queue_empty(trans);
721 static inline int iwl_trans_dbgfs_register(struct iwl_trans *trans,
724 return trans->ops->dbgfs_register(trans, dir);
727 static inline void iwl_trans_write8(struct iwl_trans *trans, u32 ofs, u8 val)
729 trans->ops->write8(trans, ofs, val);
732 static inline void iwl_trans_write32(struct iwl_trans *trans, u32 ofs, u32 val)
734 trans->ops->write32(trans, ofs, val);
737 static inline u32 iwl_trans_read32(struct iwl_trans *trans, u32 ofs)
739 return trans->ops->read32(trans, ofs);
742 static inline u32 iwl_trans_read_prph(struct iwl_trans *trans, u32 ofs)
744 return trans->ops->read_prph(trans, ofs);
747 static inline void iwl_trans_write_prph(struct iwl_trans *trans, u32 ofs,
750 return trans->ops->write_prph(trans, ofs, val);
753 static inline int iwl_trans_read_mem(struct iwl_trans *trans, u32 addr,
754 void *buf, int dwords)
756 return trans->ops->read_mem(trans, addr, buf, dwords);
759 #define iwl_trans_read_mem_bytes(trans, addr, buf, bufsize) \
761 if (__builtin_constant_p(bufsize)) \
762 BUILD_BUG_ON((bufsize) % sizeof(u32)); \
763 iwl_trans_read_mem(trans, addr, buf, (bufsize) / sizeof(u32));\
766 static inline u32 iwl_trans_read_mem32(struct iwl_trans *trans, u32 addr)
770 if (WARN_ON(iwl_trans_read_mem(trans, addr, &value, 1)))
776 static inline int iwl_trans_write_mem(struct iwl_trans *trans, u32 addr,
777 const void *buf, int dwords)
779 return trans->ops->write_mem(trans, addr, buf, dwords);
782 static inline u32 iwl_trans_write_mem32(struct iwl_trans *trans, u32 addr,
785 return iwl_trans_write_mem(trans, addr, &val, 1);
788 static inline void iwl_trans_set_pmi(struct iwl_trans *trans, bool state)
790 if (trans->ops->set_pmi)
791 trans->ops->set_pmi(trans, state);
795 iwl_trans_set_bits_mask(struct iwl_trans *trans, u32 reg, u32 mask, u32 value)
797 trans->ops->set_bits_mask(trans, reg, mask, value);
800 #define iwl_trans_grab_nic_access(trans, silent, flags) \
801 __cond_lock(nic_access, \
802 likely((trans)->ops->grab_nic_access(trans, silent, flags)))
804 static inline void __releases(nic_access)
805 iwl_trans_release_nic_access(struct iwl_trans *trans, unsigned long *flags)
807 trans->ops->release_nic_access(trans, flags);
808 __release(nic_access);
811 static inline void iwl_trans_fw_error(struct iwl_trans *trans)
813 if (WARN_ON_ONCE(!trans->op_mode))
816 /* prevent double restarts due to the same erroneous FW */
817 if (!test_and_set_bit(STATUS_FW_ERROR, &trans->status))
818 iwl_op_mode_nic_error(trans->op_mode);
821 /*****************************************************
822 * driver (transport) register/unregister functions
823 ******************************************************/
824 int __must_check iwl_pci_register_driver(void);
825 void iwl_pci_unregister_driver(void);
827 static inline void trans_lockdep_init(struct iwl_trans *trans)
829 #ifdef CONFIG_LOCKDEP
830 static struct lock_class_key __key;
832 lockdep_init_map(&trans->sync_cmd_lockdep_map, "sync_cmd_lockdep_map",
837 #endif /* __iwl_trans_h__ */