1 /******************************************************************************
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.
8 * Copyright(c) 2007 - 2013 Intel Corporation. All rights reserved.
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
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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.
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21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24 * The full GNU General Public License is included in this distribution
25 * in the file called LICENSE.GPL.
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
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33 * Copyright(c) 2005 - 2013 Intel Corporation. All rights reserved.
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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"
75 * DOC: Transport layer - what is it ?
77 * The tranport layer is the layer that deals with the HW directly. It provides
78 * an abstraction of the underlying HW to the upper layer. The transport layer
79 * doesn't provide any policy, algorithm or anything of this kind, but only
80 * mechanisms to make the HW do something.It is not completely stateless but
82 * We will have an implementation for each different supported bus.
86 * DOC: Life cycle of the transport layer
88 * The transport layer has a very precise life cycle.
90 * 1) A helper function is called during the module initialization and
91 * registers the bus driver's ops with the transport's alloc function.
92 * 2) Bus's probe calls to the transport layer's allocation functions.
93 * Of course this function is bus specific.
94 * 3) This allocation functions will spawn the upper layer which will
97 * 4) At some point (i.e. mac80211's start call), the op_mode will call
98 * the following sequence:
102 * 5) Then when finished (or reset):
103 * stop_fw (a.k.a. stop device for the moment)
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_SN(seq) (((seq) & IEEE80211_SCTL_SEQ) >> 4)
118 #define SN_TO_SEQ(ssn) (((ssn) << 4) & IEEE80211_SCTL_SEQ)
119 #define MAX_SN ((IEEE80211_SCTL_SEQ) >> 4)
120 #define SEQ_TO_QUEUE(s) (((s) >> 8) & 0x1f)
121 #define QUEUE_TO_SEQ(q) (((q) & 0x1f) << 8)
122 #define SEQ_TO_INDEX(s) ((s) & 0xff)
123 #define INDEX_TO_SEQ(i) ((i) & 0xff)
124 #define SEQ_RX_FRAME cpu_to_le16(0x8000)
127 * struct iwl_cmd_header
129 * This header format appears in the beginning of each command sent from the
130 * driver, and each response/notification received from uCode.
132 struct iwl_cmd_header
{
133 u8 cmd
; /* Command ID: REPLY_RXON, etc. */
134 u8 flags
; /* 0:5 reserved, 6 abort, 7 internal */
136 * The driver sets up the sequence number to values of its choosing.
137 * uCode does not use this value, but passes it back to the driver
138 * when sending the response to each driver-originated command, so
139 * the driver can match the response to the command. Since the values
140 * don't get used by uCode, the driver may set up an arbitrary format.
142 * There is one exception: uCode sets bit 15 when it originates
143 * the response/notification, i.e. when the response/notification
144 * is not a direct response to a command sent by the driver. For
145 * example, uCode issues REPLY_RX when it sends a received frame
146 * to the driver; it is not a direct response to any driver command.
148 * The Linux driver uses the following format:
150 * 0:7 tfd index - position within TX queue
153 * 15 unsolicited RX or uCode-originated notification
158 /* iwl_cmd_header flags value */
159 #define IWL_CMD_FAILED_MSK 0x40
162 #define FH_RSCSR_FRAME_SIZE_MSK 0x00003FFF /* bits 0-13 */
163 #define FH_RSCSR_FRAME_INVALID 0x55550000
164 #define FH_RSCSR_FRAME_ALIGN 0x40
166 struct iwl_rx_packet
{
168 * The first 4 bytes of the RX frame header contain both the RX frame
169 * size and some flags.
171 * 31: flag flush RB request
172 * 30: flag ignore TC (terminal counter) request
173 * 29: flag fast IRQ request
175 * 13-00: RX frame size
178 struct iwl_cmd_header hdr
;
183 * enum CMD_MODE - how to send the host commands ?
185 * @CMD_SYNC: The caller will be stalled until the fw responds to the command
186 * @CMD_ASYNC: Return right away and don't want for the response
187 * @CMD_WANT_SKB: valid only with CMD_SYNC. The caller needs the buffer of the
188 * response. The caller needs to call iwl_free_resp when done.
189 * @CMD_ON_DEMAND: This command is sent by the test mode pipe.
194 CMD_WANT_SKB
= BIT(1),
195 CMD_ON_DEMAND
= BIT(2),
198 #define DEF_CMD_PAYLOAD_SIZE 320
201 * struct iwl_device_cmd
203 * For allocation of the command and tx queues, this establishes the overall
204 * size of the largest command we send to uCode, except for commands that
205 * aren't fully copied and use other TFD space.
207 struct iwl_device_cmd
{
208 struct iwl_cmd_header hdr
; /* uCode API */
209 u8 payload
[DEF_CMD_PAYLOAD_SIZE
];
212 #define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_device_cmd))
215 * number of transfer buffers (fragments) per transmit frame descriptor;
216 * this is just the driver's idea, the hardware supports 20
218 #define IWL_MAX_CMD_TBS_PER_TFD 2
221 * struct iwl_hcmd_dataflag - flag for each one of the chunks of the command
223 * @IWL_HCMD_DFL_NOCOPY: By default, the command is copied to the host command's
224 * ring. The transport layer doesn't map the command's buffer to DMA, but
225 * rather copies it to an previously allocated DMA buffer. This flag tells
226 * the transport layer not to copy the command, but to map the existing
227 * buffer (that is passed in) instead. This saves the memcpy and allows
228 * commands that are bigger than the fixed buffer to be submitted.
229 * Note that a TFD entry after a NOCOPY one cannot be a normal copied one.
230 * @IWL_HCMD_DFL_DUP: Only valid without NOCOPY, duplicate the memory for this
231 * chunk internally and free it again after the command completes. This
232 * can (currently) be used only once per command.
233 * Note that a TFD entry after a DUP one cannot be a normal copied one.
235 enum iwl_hcmd_dataflag
{
236 IWL_HCMD_DFL_NOCOPY
= BIT(0),
237 IWL_HCMD_DFL_DUP
= BIT(1),
241 * struct iwl_host_cmd - Host command to the uCode
243 * @data: array of chunks that composes the data of the host command
244 * @resp_pkt: response packet, if %CMD_WANT_SKB was set
245 * @_rx_page_order: (internally used to free response packet)
246 * @_rx_page_addr: (internally used to free response packet)
247 * @handler_status: return value of the handler of the command
248 * (put in setup_rx_handlers) - valid for SYNC mode only
249 * @flags: can be CMD_*
250 * @len: array of the lenths of the chunks in data
251 * @dataflags: IWL_HCMD_DFL_*
252 * @id: id of the host command
254 struct iwl_host_cmd
{
255 const void *data
[IWL_MAX_CMD_TBS_PER_TFD
];
256 struct iwl_rx_packet
*resp_pkt
;
257 unsigned long _rx_page_addr
;
262 u16 len
[IWL_MAX_CMD_TBS_PER_TFD
];
263 u8 dataflags
[IWL_MAX_CMD_TBS_PER_TFD
];
267 static inline void iwl_free_resp(struct iwl_host_cmd
*cmd
)
269 free_pages(cmd
->_rx_page_addr
, cmd
->_rx_page_order
);
272 struct iwl_rx_cmd_buffer
{
277 unsigned int truesize
;
280 static inline void *rxb_addr(struct iwl_rx_cmd_buffer
*r
)
282 return (void *)((unsigned long)page_address(r
->_page
) + r
->_offset
);
285 static inline int rxb_offset(struct iwl_rx_cmd_buffer
*r
)
290 static inline struct page
*rxb_steal_page(struct iwl_rx_cmd_buffer
*r
)
292 r
->_page_stolen
= true;
297 static inline void iwl_free_rxb(struct iwl_rx_cmd_buffer
*r
)
299 __free_pages(r
->_page
, r
->_rx_page_order
);
302 #define MAX_NO_RECLAIM_CMDS 6
304 #define IWL_MASK(lo, hi) ((1 << (hi)) | ((1 << (hi)) - (1 << (lo))))
307 * Maximum number of HW queues the transport layer
310 #define IWL_MAX_HW_QUEUES 32
311 #define IWL_INVALID_STATION 255
312 #define IWL_MAX_TID_COUNT 8
313 #define IWL_FRAME_LIMIT 64
316 * enum iwl_wowlan_status - WoWLAN image/device status
317 * @IWL_D3_STATUS_ALIVE: firmware is still running after resume
318 * @IWL_D3_STATUS_RESET: device was reset while suspended
326 * struct iwl_trans_config - transport configuration
328 * @op_mode: pointer to the upper layer.
329 * @cmd_queue: the index of the command queue.
330 * Must be set before start_fw.
331 * @cmd_fifo: the fifo for host commands
332 * @no_reclaim_cmds: Some devices erroneously don't set the
333 * SEQ_RX_FRAME bit on some notifications, this is the
334 * list of such notifications to filter. Max length is
335 * %MAX_NO_RECLAIM_CMDS.
336 * @n_no_reclaim_cmds: # of commands in list
337 * @rx_buf_size_8k: 8 kB RX buffer size needed for A-MSDUs,
338 * if unset 4k will be the RX buffer size
339 * @bc_table_dword: set to true if the BC table expects the byte count to be
340 * in DWORD (as opposed to bytes)
341 * @queue_watchdog_timeout: time (in ms) after which queues
342 * are considered stuck and will trigger device restart
343 * @command_names: array of command names, must be 256 entries
344 * (one for each command); for debugging only
346 struct iwl_trans_config
{
347 struct iwl_op_mode
*op_mode
;
351 const u8
*no_reclaim_cmds
;
352 int n_no_reclaim_cmds
;
356 unsigned int queue_watchdog_timeout
;
357 const char **command_names
;
363 * struct iwl_trans_ops - transport specific operations
365 * All the handlers MUST be implemented
367 * @start_hw: starts the HW- from that point on, the HW can send interrupts
369 * @stop_hw: stops the HW- from that point on, the HW will be in low power but
370 * will still issue interrupt if the HW RF kill is triggered unless
371 * op_mode_leaving is true.
373 * @start_fw: allocates and inits all the resources for the transport
374 * layer. Also kick a fw image.
376 * @fw_alive: called when the fw sends alive notification. If the fw provides
377 * the SCD base address in SRAM, then provide it here, or 0 otherwise.
379 * @stop_device:stops the whole device (embedded CPU put to reset)
381 * @d3_suspend: put the device into the correct mode for WoWLAN during
382 * suspend. This is optional, if not implemented WoWLAN will not be
383 * supported. This callback may sleep.
384 * @d3_resume: resume the device after WoWLAN, enabling the opmode to
385 * talk to the WoWLAN image to get its status. This is optional, if not
386 * implemented WoWLAN will not be supported. This callback may sleep.
387 * @send_cmd:send a host command. Must return -ERFKILL if RFkill is asserted.
388 * If RFkill is asserted in the middle of a SYNC host command, it must
389 * return -ERFKILL straight away.
390 * May sleep only if CMD_SYNC is set
393 * @reclaim: free packet until ssn. Returns a list of freed packets.
395 * @txq_enable: setup a queue. To setup an AC queue, use the
396 * iwl_trans_ac_txq_enable wrapper. fw_alive must have been called before
397 * this one. The op_mode must not configure the HCMD queue. May sleep.
398 * @txq_disable: de-configure a Tx queue to send AMPDUs
400 * @wait_tx_queue_empty: wait until all tx queues are empty
402 * @dbgfs_register: add the dbgfs files under this directory. Files will be
403 * automatically deleted.
404 * @suspend: stop the device unless WoWLAN is configured
405 * @resume: resume activity of the device
406 * @write8: write a u8 to a register at offset ofs from the BAR
407 * @write32: write a u32 to a register at offset ofs from the BAR
408 * @read32: read a u32 register at offset ofs from the BAR
409 * @read_prph: read a DWORD from a periphery register
410 * @write_prph: write a DWORD to a periphery register
411 * @read_mem: read device's SRAM in DWORD
412 * @write_mem: write device's SRAM in DWORD. If %buf is %NULL, then the memory
414 * @configure: configure parameters required by the transport layer from
415 * the op_mode. May be called several times before start_fw, can't be
417 * @set_pmi: set the power pmi state
418 * @grab_nic_access: wake the NIC to be able to access non-HBUS regs.
419 * Sleeping is not allowed between grab_nic_access and
420 * release_nic_access.
421 * @release_nic_access: let the NIC go to sleep. The "flags" parameter
422 * must be the same one that was sent before to the grab_nic_access.
423 * @set_bits_mask - set SRAM register according to value and mask.
425 struct iwl_trans_ops
{
427 int (*start_hw
)(struct iwl_trans
*iwl_trans
);
428 void (*stop_hw
)(struct iwl_trans
*iwl_trans
, bool op_mode_leaving
);
429 int (*start_fw
)(struct iwl_trans
*trans
, const struct fw_img
*fw
,
431 void (*fw_alive
)(struct iwl_trans
*trans
, u32 scd_addr
);
432 void (*stop_device
)(struct iwl_trans
*trans
);
434 void (*d3_suspend
)(struct iwl_trans
*trans
);
435 int (*d3_resume
)(struct iwl_trans
*trans
, enum iwl_d3_status
*status
);
437 int (*send_cmd
)(struct iwl_trans
*trans
, struct iwl_host_cmd
*cmd
);
439 int (*tx
)(struct iwl_trans
*trans
, struct sk_buff
*skb
,
440 struct iwl_device_cmd
*dev_cmd
, int queue
);
441 void (*reclaim
)(struct iwl_trans
*trans
, int queue
, int ssn
,
442 struct sk_buff_head
*skbs
);
444 void (*txq_enable
)(struct iwl_trans
*trans
, int queue
, int fifo
,
445 int sta_id
, int tid
, int frame_limit
, u16 ssn
);
446 void (*txq_disable
)(struct iwl_trans
*trans
, int queue
);
448 int (*dbgfs_register
)(struct iwl_trans
*trans
, struct dentry
* dir
);
449 int (*wait_tx_queue_empty
)(struct iwl_trans
*trans
);
450 #ifdef CONFIG_PM_SLEEP
451 int (*suspend
)(struct iwl_trans
*trans
);
452 int (*resume
)(struct iwl_trans
*trans
);
454 void (*write8
)(struct iwl_trans
*trans
, u32 ofs
, u8 val
);
455 void (*write32
)(struct iwl_trans
*trans
, u32 ofs
, u32 val
);
456 u32 (*read32
)(struct iwl_trans
*trans
, u32 ofs
);
457 u32 (*read_prph
)(struct iwl_trans
*trans
, u32 ofs
);
458 void (*write_prph
)(struct iwl_trans
*trans
, u32 ofs
, u32 val
);
459 int (*read_mem
)(struct iwl_trans
*trans
, u32 addr
,
460 void *buf
, int dwords
);
461 int (*write_mem
)(struct iwl_trans
*trans
, u32 addr
,
462 void *buf
, int dwords
);
463 void (*configure
)(struct iwl_trans
*trans
,
464 const struct iwl_trans_config
*trans_cfg
);
465 void (*set_pmi
)(struct iwl_trans
*trans
, bool state
);
466 bool (*grab_nic_access
)(struct iwl_trans
*trans
, bool silent
,
467 unsigned long *flags
);
468 void (*release_nic_access
)(struct iwl_trans
*trans
,
469 unsigned long *flags
);
470 void (*set_bits_mask
)(struct iwl_trans
*trans
, u32 reg
, u32 mask
,
475 * enum iwl_trans_state - state of the transport layer
477 * @IWL_TRANS_NO_FW: no fw has sent an alive response
478 * @IWL_TRANS_FW_ALIVE: a fw has sent an alive response
480 enum iwl_trans_state
{
482 IWL_TRANS_FW_ALIVE
= 1,
486 * struct iwl_trans - transport common data
488 * @ops - pointer to iwl_trans_ops
489 * @op_mode - pointer to the op_mode
490 * @cfg - pointer to the configuration
491 * @dev - pointer to struct device * that represents the device
492 * @hw_id: a u32 with the ID of the device / subdevice.
493 * Set during transport allocation.
494 * @hw_id_str: a string with info about HW ID. Set during transport allocation.
495 * @pm_support: set to true in start_hw if link pm is supported
496 * @dev_cmd_pool: pool for Tx cmd allocation - for internal use only.
497 * The user should use iwl_trans_{alloc,free}_tx_cmd.
498 * @dev_cmd_headroom: room needed for the transport's private use before the
499 * device_cmd for Tx - for internal use only
500 * The user should use iwl_trans_{alloc,free}_tx_cmd.
501 * @rx_mpdu_cmd: MPDU RX command ID, must be assigned by opmode before
502 * starting the firmware, used for tracing
503 * @rx_mpdu_cmd_hdr_size: used for tracing, amount of data before the
504 * start of the 802.11 header in the @rx_mpdu_cmd
507 const struct iwl_trans_ops
*ops
;
508 struct iwl_op_mode
*op_mode
;
509 const struct iwl_cfg
*cfg
;
510 enum iwl_trans_state state
;
517 u8 rx_mpdu_cmd
, rx_mpdu_cmd_hdr_size
;
521 /* The following fields are internal only */
522 struct kmem_cache
*dev_cmd_pool
;
523 size_t dev_cmd_headroom
;
524 char dev_cmd_pool_name
[50];
526 struct dentry
*dbgfs_dir
;
528 #ifdef CONFIG_LOCKDEP
529 struct lockdep_map sync_cmd_lockdep_map
;
532 /* pointer to trans specific struct */
533 /*Ensure that this pointer will always be aligned to sizeof pointer */
534 char trans_specific
[0] __aligned(sizeof(void *));
537 static inline void iwl_trans_configure(struct iwl_trans
*trans
,
538 const struct iwl_trans_config
*trans_cfg
)
540 trans
->op_mode
= trans_cfg
->op_mode
;
542 trans
->ops
->configure(trans
, trans_cfg
);
545 static inline int iwl_trans_start_hw(struct iwl_trans
*trans
)
549 return trans
->ops
->start_hw(trans
);
552 static inline void iwl_trans_stop_hw(struct iwl_trans
*trans
,
553 bool op_mode_leaving
)
557 trans
->ops
->stop_hw(trans
, op_mode_leaving
);
560 trans
->op_mode
= NULL
;
562 trans
->state
= IWL_TRANS_NO_FW
;
565 static inline void iwl_trans_fw_alive(struct iwl_trans
*trans
, u32 scd_addr
)
569 trans
->state
= IWL_TRANS_FW_ALIVE
;
571 trans
->ops
->fw_alive(trans
, scd_addr
);
574 static inline int iwl_trans_start_fw(struct iwl_trans
*trans
,
575 const struct fw_img
*fw
,
580 WARN_ON_ONCE(!trans
->rx_mpdu_cmd
);
582 return trans
->ops
->start_fw(trans
, fw
, run_in_rfkill
);
585 static inline void iwl_trans_stop_device(struct iwl_trans
*trans
)
589 trans
->ops
->stop_device(trans
);
591 trans
->state
= IWL_TRANS_NO_FW
;
594 static inline void iwl_trans_d3_suspend(struct iwl_trans
*trans
)
597 trans
->ops
->d3_suspend(trans
);
600 static inline int iwl_trans_d3_resume(struct iwl_trans
*trans
,
601 enum iwl_d3_status
*status
)
604 return trans
->ops
->d3_resume(trans
, status
);
607 static inline int iwl_trans_send_cmd(struct iwl_trans
*trans
,
608 struct iwl_host_cmd
*cmd
)
612 WARN_ONCE(trans
->state
!= IWL_TRANS_FW_ALIVE
,
613 "%s bad state = %d", __func__
, trans
->state
);
615 if (!(cmd
->flags
& CMD_ASYNC
))
616 lock_map_acquire_read(&trans
->sync_cmd_lockdep_map
);
618 ret
= trans
->ops
->send_cmd(trans
, cmd
);
620 if (!(cmd
->flags
& CMD_ASYNC
))
621 lock_map_release(&trans
->sync_cmd_lockdep_map
);
626 static inline struct iwl_device_cmd
*
627 iwl_trans_alloc_tx_cmd(struct iwl_trans
*trans
)
629 u8
*dev_cmd_ptr
= kmem_cache_alloc(trans
->dev_cmd_pool
, GFP_ATOMIC
);
631 if (unlikely(dev_cmd_ptr
== NULL
))
634 return (struct iwl_device_cmd
*)
635 (dev_cmd_ptr
+ trans
->dev_cmd_headroom
);
638 static inline void iwl_trans_free_tx_cmd(struct iwl_trans
*trans
,
639 struct iwl_device_cmd
*dev_cmd
)
641 u8
*dev_cmd_ptr
= (u8
*)dev_cmd
- trans
->dev_cmd_headroom
;
643 kmem_cache_free(trans
->dev_cmd_pool
, dev_cmd_ptr
);
646 static inline int iwl_trans_tx(struct iwl_trans
*trans
, struct sk_buff
*skb
,
647 struct iwl_device_cmd
*dev_cmd
, int queue
)
649 WARN_ONCE(trans
->state
!= IWL_TRANS_FW_ALIVE
,
650 "%s bad state = %d", __func__
, trans
->state
);
652 return trans
->ops
->tx(trans
, skb
, dev_cmd
, queue
);
655 static inline void iwl_trans_reclaim(struct iwl_trans
*trans
, int queue
,
656 int ssn
, struct sk_buff_head
*skbs
)
658 WARN_ONCE(trans
->state
!= IWL_TRANS_FW_ALIVE
,
659 "%s bad state = %d", __func__
, trans
->state
);
661 trans
->ops
->reclaim(trans
, queue
, ssn
, skbs
);
664 static inline void iwl_trans_txq_disable(struct iwl_trans
*trans
, int queue
)
666 WARN_ONCE(trans
->state
!= IWL_TRANS_FW_ALIVE
,
667 "%s bad state = %d", __func__
, trans
->state
);
669 trans
->ops
->txq_disable(trans
, queue
);
672 static inline void iwl_trans_txq_enable(struct iwl_trans
*trans
, int queue
,
673 int fifo
, int sta_id
, int tid
,
674 int frame_limit
, u16 ssn
)
678 WARN_ONCE(trans
->state
!= IWL_TRANS_FW_ALIVE
,
679 "%s bad state = %d", __func__
, trans
->state
);
681 trans
->ops
->txq_enable(trans
, queue
, fifo
, sta_id
, tid
,
685 static inline void iwl_trans_ac_txq_enable(struct iwl_trans
*trans
, int queue
,
688 iwl_trans_txq_enable(trans
, queue
, fifo
, IWL_INVALID_STATION
,
689 IWL_MAX_TID_COUNT
, IWL_FRAME_LIMIT
, 0);
692 static inline int iwl_trans_wait_tx_queue_empty(struct iwl_trans
*trans
)
694 WARN_ONCE(trans
->state
!= IWL_TRANS_FW_ALIVE
,
695 "%s bad state = %d", __func__
, trans
->state
);
697 return trans
->ops
->wait_tx_queue_empty(trans
);
700 static inline int iwl_trans_dbgfs_register(struct iwl_trans
*trans
,
703 return trans
->ops
->dbgfs_register(trans
, dir
);
706 #ifdef CONFIG_PM_SLEEP
707 static inline int iwl_trans_suspend(struct iwl_trans
*trans
)
709 return trans
->ops
->suspend(trans
);
712 static inline int iwl_trans_resume(struct iwl_trans
*trans
)
714 return trans
->ops
->resume(trans
);
718 static inline void iwl_trans_write8(struct iwl_trans
*trans
, u32 ofs
, u8 val
)
720 trans
->ops
->write8(trans
, ofs
, val
);
723 static inline void iwl_trans_write32(struct iwl_trans
*trans
, u32 ofs
, u32 val
)
725 trans
->ops
->write32(trans
, ofs
, val
);
728 static inline u32
iwl_trans_read32(struct iwl_trans
*trans
, u32 ofs
)
730 return trans
->ops
->read32(trans
, ofs
);
733 static inline u32
iwl_trans_read_prph(struct iwl_trans
*trans
, u32 ofs
)
735 return trans
->ops
->read_prph(trans
, ofs
);
738 static inline void iwl_trans_write_prph(struct iwl_trans
*trans
, u32 ofs
,
741 return trans
->ops
->write_prph(trans
, ofs
, val
);
744 static inline int iwl_trans_read_mem(struct iwl_trans
*trans
, u32 addr
,
745 void *buf
, int dwords
)
747 return trans
->ops
->read_mem(trans
, addr
, buf
, dwords
);
750 #define iwl_trans_read_mem_bytes(trans, addr, buf, bufsize) \
752 if (__builtin_constant_p(bufsize)) \
753 BUILD_BUG_ON((bufsize) % sizeof(u32)); \
754 iwl_trans_read_mem(trans, addr, buf, (bufsize) / sizeof(u32));\
757 static inline u32
iwl_trans_read_mem32(struct iwl_trans
*trans
, u32 addr
)
761 if (WARN_ON(iwl_trans_read_mem(trans
, addr
, &value
, 1)))
767 static inline int iwl_trans_write_mem(struct iwl_trans
*trans
, u32 addr
,
768 void *buf
, int dwords
)
770 return trans
->ops
->write_mem(trans
, addr
, buf
, dwords
);
773 static inline u32
iwl_trans_write_mem32(struct iwl_trans
*trans
, u32 addr
,
776 return iwl_trans_write_mem(trans
, addr
, &val
, 1);
779 static inline void iwl_trans_set_pmi(struct iwl_trans
*trans
, bool state
)
781 trans
->ops
->set_pmi(trans
, state
);
785 iwl_trans_set_bits_mask(struct iwl_trans
*trans
, u32 reg
, u32 mask
, u32 value
)
787 trans
->ops
->set_bits_mask(trans
, reg
, mask
, value
);
790 #define iwl_trans_grab_nic_access(trans, silent, flags) \
791 __cond_lock(nic_access, \
792 likely((trans)->ops->grab_nic_access(trans, silent, flags)))
794 static inline void __releases(nic_access
)
795 iwl_trans_release_nic_access(struct iwl_trans
*trans
, unsigned long *flags
)
797 trans
->ops
->release_nic_access(trans
, flags
);
798 __release(nic_access
);
801 /*****************************************************
802 * driver (transport) register/unregister functions
803 ******************************************************/
804 int __must_check
iwl_pci_register_driver(void);
805 void iwl_pci_unregister_driver(void);
807 static inline void trans_lockdep_init(struct iwl_trans
*trans
)
809 #ifdef CONFIG_LOCKDEP
810 static struct lock_class_key __key
;
812 lockdep_init_map(&trans
->sync_cmd_lockdep_map
, "sync_cmd_lockdep_map",
817 #endif /* __iwl_trans_h__ */