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67 #ifndef __iwl_trans_h__
68 #define __iwl_trans_h__
70 #include <linux/ieee80211.h>
71 #include <linux/mm.h> /* for page_address */
72 #include <linux/lockdep.h>
73 #include <linux/kernel.h>
75 #include "iwl-debug.h"
76 #include "iwl-config.h"
78 #include "iwl-op-mode.h"
79 #include "fw/api/cmdhdr.h"
80 #include "fw/api/txq.h"
83 * DOC: Transport layer - what is it ?
85 * The transport layer is the layer that deals with the HW directly. It provides
86 * an abstraction of the underlying HW to the upper layer. The transport layer
87 * doesn't provide any policy, algorithm or anything of this kind, but only
88 * mechanisms to make the HW do something. It is not completely stateless but
90 * We will have an implementation for each different supported bus.
94 * DOC: Life cycle of the transport layer
96 * The transport layer has a very precise life cycle.
98 * 1) A helper function is called during the module initialization and
99 * registers the bus driver's ops with the transport's alloc function.
100 * 2) Bus's probe calls to the transport layer's allocation functions.
101 * Of course this function is bus specific.
102 * 3) This allocation functions will spawn the upper layer which will
105 * 4) At some point (i.e. mac80211's start call), the op_mode will call
106 * the following sequence:
110 * 5) Then when finished (or reset):
113 * 6) Eventually, the free function will be called.
116 #define FH_RSCSR_FRAME_SIZE_MSK 0x00003FFF /* bits 0-13 */
117 #define FH_RSCSR_FRAME_INVALID 0x55550000
118 #define FH_RSCSR_FRAME_ALIGN 0x40
119 #define FH_RSCSR_RPA_EN BIT(25)
120 #define FH_RSCSR_RXQ_POS 16
121 #define FH_RSCSR_RXQ_MASK 0x3F0000
123 struct iwl_rx_packet {
125 * The first 4 bytes of the RX frame header contain both the RX frame
126 * size and some flags.
128 * 31: flag flush RB request
129 * 30: flag ignore TC (terminal counter) request
130 * 29: flag fast IRQ request
132 * 25: Offload enabled
135 * 22: Checksum enabled
138 * 13-00: RX frame size
141 struct iwl_cmd_header hdr;
145 static inline u32 iwl_rx_packet_len(const struct iwl_rx_packet *pkt)
147 return le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
150 static inline u32 iwl_rx_packet_payload_len(const struct iwl_rx_packet *pkt)
152 return iwl_rx_packet_len(pkt) - sizeof(pkt->hdr);
156 * enum CMD_MODE - how to send the host commands ?
158 * @CMD_ASYNC: Return right away and don't wait for the response
159 * @CMD_WANT_SKB: Not valid with CMD_ASYNC. The caller needs the buffer of
160 * the response. The caller needs to call iwl_free_resp when done.
161 * @CMD_HIGH_PRIO: The command is high priority - it goes to the front of the
162 * command queue, but after other high priority commands. Valid only
164 * @CMD_SEND_IN_IDLE: The command should be sent even when the trans is idle.
165 * @CMD_MAKE_TRANS_IDLE: The command response should mark the trans as idle.
166 * @CMD_WAKE_UP_TRANS: The command response should wake up the trans
167 * (i.e. mark it as non-idle).
168 * @CMD_WANT_ASYNC_CALLBACK: the op_mode's async callback function must be
169 * called after this command completes. Valid only with CMD_ASYNC.
173 CMD_WANT_SKB = BIT(1),
174 CMD_SEND_IN_RFKILL = BIT(2),
175 CMD_HIGH_PRIO = BIT(3),
176 CMD_SEND_IN_IDLE = BIT(4),
177 CMD_MAKE_TRANS_IDLE = BIT(5),
178 CMD_WAKE_UP_TRANS = BIT(6),
179 CMD_WANT_ASYNC_CALLBACK = BIT(7),
182 #define DEF_CMD_PAYLOAD_SIZE 320
185 * struct iwl_device_cmd
187 * For allocation of the command and tx queues, this establishes the overall
188 * size of the largest command we send to uCode, except for commands that
189 * aren't fully copied and use other TFD space.
191 struct iwl_device_cmd {
194 struct iwl_cmd_header hdr; /* uCode API */
195 u8 payload[DEF_CMD_PAYLOAD_SIZE];
198 struct iwl_cmd_header_wide hdr_wide;
199 u8 payload_wide[DEF_CMD_PAYLOAD_SIZE -
200 sizeof(struct iwl_cmd_header_wide) +
201 sizeof(struct iwl_cmd_header)];
206 #define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_device_cmd))
209 * number of transfer buffers (fragments) per transmit frame descriptor;
210 * this is just the driver's idea, the hardware supports 20
212 #define IWL_MAX_CMD_TBS_PER_TFD 2
215 * enum iwl_hcmd_dataflag - flag for each one of the chunks of the command
217 * @IWL_HCMD_DFL_NOCOPY: By default, the command is copied to the host command's
218 * ring. The transport layer doesn't map the command's buffer to DMA, but
219 * rather copies it to a previously allocated DMA buffer. This flag tells
220 * the transport layer not to copy the command, but to map the existing
221 * buffer (that is passed in) instead. This saves the memcpy and allows
222 * commands that are bigger than the fixed buffer to be submitted.
223 * Note that a TFD entry after a NOCOPY one cannot be a normal copied one.
224 * @IWL_HCMD_DFL_DUP: Only valid without NOCOPY, duplicate the memory for this
225 * chunk internally and free it again after the command completes. This
226 * can (currently) be used only once per command.
227 * Note that a TFD entry after a DUP one cannot be a normal copied one.
229 enum iwl_hcmd_dataflag {
230 IWL_HCMD_DFL_NOCOPY = BIT(0),
231 IWL_HCMD_DFL_DUP = BIT(1),
235 * struct iwl_host_cmd - Host command to the uCode
237 * @data: array of chunks that composes the data of the host command
238 * @resp_pkt: response packet, if %CMD_WANT_SKB was set
239 * @_rx_page_order: (internally used to free response packet)
240 * @_rx_page_addr: (internally used to free response packet)
241 * @flags: can be CMD_*
242 * @len: array of the lengths of the chunks in data
243 * @dataflags: IWL_HCMD_DFL_*
244 * @id: command id of the host command, for wide commands encoding the
245 * version and group as well
247 struct iwl_host_cmd {
248 const void *data[IWL_MAX_CMD_TBS_PER_TFD];
249 struct iwl_rx_packet *resp_pkt;
250 unsigned long _rx_page_addr;
255 u16 len[IWL_MAX_CMD_TBS_PER_TFD];
256 u8 dataflags[IWL_MAX_CMD_TBS_PER_TFD];
259 static inline void iwl_free_resp(struct iwl_host_cmd *cmd)
261 free_pages(cmd->_rx_page_addr, cmd->_rx_page_order);
264 struct iwl_rx_cmd_buffer {
269 unsigned int truesize;
272 static inline void *rxb_addr(struct iwl_rx_cmd_buffer *r)
274 return (void *)((unsigned long)page_address(r->_page) + r->_offset);
277 static inline int rxb_offset(struct iwl_rx_cmd_buffer *r)
282 static inline struct page *rxb_steal_page(struct iwl_rx_cmd_buffer *r)
284 r->_page_stolen = true;
289 static inline void iwl_free_rxb(struct iwl_rx_cmd_buffer *r)
291 __free_pages(r->_page, r->_rx_page_order);
294 #define MAX_NO_RECLAIM_CMDS 6
296 #define IWL_MASK(lo, hi) ((1 << (hi)) | ((1 << (hi)) - (1 << (lo))))
299 * Maximum number of HW queues the transport layer
302 #define IWL_MAX_HW_QUEUES 32
303 #define IWL_MAX_TVQM_QUEUES 512
305 #define IWL_MAX_TID_COUNT 8
306 #define IWL_MGMT_TID 15
307 #define IWL_FRAME_LIMIT 64
308 #define IWL_MAX_RX_HW_QUEUES 16
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_HW: the actual HW state of the RF-kill switch
327 * @STATUS_RFKILL_OPMODE: RF-kill state reported to opmode
328 * @STATUS_FW_ERROR: the fw is in error state
329 * @STATUS_TRANS_GOING_IDLE: shutting down the trans, only special commands
331 * @STATUS_TRANS_IDLE: the trans is idle - general commands are not to be sent
332 * @STATUS_TRANS_DEAD: trans is dead - avoid any read/write operation
334 enum iwl_trans_status {
335 STATUS_SYNC_HCMD_ACTIVE,
336 STATUS_DEVICE_ENABLED,
340 STATUS_RFKILL_OPMODE,
342 STATUS_TRANS_GOING_IDLE,
348 iwl_trans_get_rb_size_order(enum iwl_amsdu_size rb_size)
352 return get_order(4 * 1024);
354 return get_order(8 * 1024);
356 return get_order(12 * 1024);
363 struct iwl_hcmd_names {
365 const char *const cmd_name;
368 #define HCMD_NAME(x) \
369 { .cmd_id = x, .cmd_name = #x }
371 struct iwl_hcmd_arr {
372 const struct iwl_hcmd_names *arr;
376 #define HCMD_ARR(x) \
377 { .arr = x, .size = ARRAY_SIZE(x) }
380 * struct iwl_trans_config - transport configuration
382 * @op_mode: pointer to the upper layer.
383 * @cmd_queue: the index of the command queue.
384 * Must be set before start_fw.
385 * @cmd_fifo: the fifo for host commands
386 * @cmd_q_wdg_timeout: the timeout of the watchdog timer for the command queue.
387 * @no_reclaim_cmds: Some devices erroneously don't set the
388 * SEQ_RX_FRAME bit on some notifications, this is the
389 * list of such notifications to filter. Max length is
390 * %MAX_NO_RECLAIM_CMDS.
391 * @n_no_reclaim_cmds: # of commands in list
392 * @rx_buf_size: RX buffer size needed for A-MSDUs
393 * if unset 4k will be the RX buffer size
394 * @bc_table_dword: set to true if the BC table expects the byte count to be
395 * in DWORD (as opposed to bytes)
396 * @scd_set_active: should the transport configure the SCD for HCMD queue
397 * @sw_csum_tx: transport should compute the TCP checksum
398 * @command_groups: array of command groups, each member is an array of the
399 * commands in the group; for debugging only
400 * @command_groups_size: number of command groups, to avoid illegal access
401 * @cb_data_offs: offset inside skb->cb to store transport data at, must have
402 * space for at least two pointers
404 struct iwl_trans_config {
405 struct iwl_op_mode *op_mode;
409 unsigned int cmd_q_wdg_timeout;
410 const u8 *no_reclaim_cmds;
411 unsigned int n_no_reclaim_cmds;
413 enum iwl_amsdu_size rx_buf_size;
417 const struct iwl_hcmd_arr *command_groups;
418 int command_groups_size;
423 struct iwl_trans_dump_data {
430 struct iwl_trans_txq_scd_cfg {
439 * struct iwl_trans_ops - transport specific operations
441 * All the handlers MUST be implemented
443 * @start_hw: starts the HW. If low_power is true, the NIC needs to be taken
444 * out of a low power state. From that point on, the HW can send
445 * interrupts. May sleep.
446 * @op_mode_leave: Turn off the HW RF kill indication if on
448 * @start_fw: allocates and inits all the resources for the transport
449 * layer. Also kick a fw image.
451 * @fw_alive: called when the fw sends alive notification. If the fw provides
452 * the SCD base address in SRAM, then provide it here, or 0 otherwise.
454 * @stop_device: stops the whole device (embedded CPU put to reset) and stops
455 * the HW. If low_power is true, the NIC will be put in low power state.
456 * From that point on, the HW will be stopped but will still issue an
457 * interrupt if the HW RF kill switch is triggered.
458 * This callback must do the right thing and not crash even if %start_hw()
459 * was called but not &start_fw(). May sleep.
460 * @d3_suspend: put the device into the correct mode for WoWLAN during
461 * suspend. This is optional, if not implemented WoWLAN will not be
462 * supported. This callback may sleep.
463 * @d3_resume: resume the device after WoWLAN, enabling the opmode to
464 * talk to the WoWLAN image to get its status. This is optional, if not
465 * implemented WoWLAN will not be supported. This callback may sleep.
466 * @send_cmd:send a host command. Must return -ERFKILL if RFkill is asserted.
467 * If RFkill is asserted in the middle of a SYNC host command, it must
468 * return -ERFKILL straight away.
469 * May sleep only if CMD_ASYNC is not set
470 * @tx: send an skb. The transport relies on the op_mode to zero the
471 * the ieee80211_tx_info->driver_data. If the MPDU is an A-MSDU, all
472 * the CSUM will be taken care of (TCP CSUM and IP header in case of
473 * IPv4). If the MPDU is a single MSDU, the op_mode must compute the IP
474 * header if it is IPv4.
476 * @reclaim: free packet until ssn. Returns a list of freed packets.
478 * @txq_enable: setup a queue. To setup an AC queue, use the
479 * iwl_trans_ac_txq_enable wrapper. fw_alive must have been called before
480 * this one. The op_mode must not configure the HCMD queue. The scheduler
481 * configuration may be %NULL, in which case the hardware will not be
482 * configured. If true is returned, the operation mode needs to increment
483 * the sequence number of the packets routed to this queue because of a
484 * hardware scheduler bug. May sleep.
485 * @txq_disable: de-configure a Tx queue to send AMPDUs
487 * @txq_set_shared_mode: change Tx queue shared/unshared marking
488 * @wait_tx_queues_empty: wait until tx queues are empty. May sleep.
489 * @wait_txq_empty: wait until specific tx queue is empty. May sleep.
490 * @freeze_txq_timer: prevents the timer of the queue from firing until the
491 * queue is set to awake. Must be atomic.
492 * @block_txq_ptrs: stop updating the write pointers of the Tx queues. Note
493 * that the transport needs to refcount the calls since this function
494 * will be called several times with block = true, and then the queues
495 * need to be unblocked only after the same number of calls with
497 * @write8: write a u8 to a register at offset ofs from the BAR
498 * @write32: write a u32 to a register at offset ofs from the BAR
499 * @read32: read a u32 register at offset ofs from the BAR
500 * @read_prph: read a DWORD from a periphery register
501 * @write_prph: write a DWORD to a periphery register
502 * @read_mem: read device's SRAM in DWORD
503 * @write_mem: write device's SRAM in DWORD. If %buf is %NULL, then the memory
505 * @configure: configure parameters required by the transport layer from
506 * the op_mode. May be called several times before start_fw, can't be
508 * @set_pmi: set the power pmi state
509 * @grab_nic_access: wake the NIC to be able to access non-HBUS regs.
510 * Sleeping is not allowed between grab_nic_access and
511 * release_nic_access.
512 * @release_nic_access: let the NIC go to sleep. The "flags" parameter
513 * must be the same one that was sent before to the grab_nic_access.
514 * @set_bits_mask - set SRAM register according to value and mask.
515 * @ref: grab a reference to the transport/FW layers, disallowing
516 * certain low power states
517 * @unref: release a reference previously taken with @ref. Note that
518 * initially the reference count is 1, making an initial @unref
519 * necessary to allow low power states.
520 * @dump_data: return a vmalloc'ed buffer with debug data, maybe containing last
521 * TX'ed commands and similar. The buffer will be vfree'd by the caller.
522 * Note that the transport must fill in the proper file headers.
523 * @dump_regs: dump using IWL_ERR configuration space and memory mapped
524 * registers of the device to diagnose failure, e.g., when HW becomes
527 struct iwl_trans_ops {
529 int (*start_hw)(struct iwl_trans *iwl_trans, bool low_power);
530 void (*op_mode_leave)(struct iwl_trans *iwl_trans);
531 int (*start_fw)(struct iwl_trans *trans, const struct fw_img *fw,
533 void (*fw_alive)(struct iwl_trans *trans, u32 scd_addr);
534 void (*stop_device)(struct iwl_trans *trans, bool low_power);
536 void (*d3_suspend)(struct iwl_trans *trans, bool test, bool reset);
537 int (*d3_resume)(struct iwl_trans *trans, enum iwl_d3_status *status,
538 bool test, bool reset);
540 int (*send_cmd)(struct iwl_trans *trans, struct iwl_host_cmd *cmd);
542 int (*tx)(struct iwl_trans *trans, struct sk_buff *skb,
543 struct iwl_device_cmd *dev_cmd, int queue);
544 void (*reclaim)(struct iwl_trans *trans, int queue, int ssn,
545 struct sk_buff_head *skbs);
547 bool (*txq_enable)(struct iwl_trans *trans, int queue, u16 ssn,
548 const struct iwl_trans_txq_scd_cfg *cfg,
549 unsigned int queue_wdg_timeout);
550 void (*txq_disable)(struct iwl_trans *trans, int queue,
553 int (*txq_alloc)(struct iwl_trans *trans,
554 struct iwl_tx_queue_cfg_cmd *cmd,
556 unsigned int queue_wdg_timeout);
557 void (*txq_free)(struct iwl_trans *trans, int queue);
559 void (*txq_set_shared_mode)(struct iwl_trans *trans, u32 txq_id,
562 int (*wait_tx_queues_empty)(struct iwl_trans *trans, u32 txq_bm);
563 int (*wait_txq_empty)(struct iwl_trans *trans, int queue);
564 void (*freeze_txq_timer)(struct iwl_trans *trans, unsigned long txqs,
566 void (*block_txq_ptrs)(struct iwl_trans *trans, bool block);
568 void (*write8)(struct iwl_trans *trans, u32 ofs, u8 val);
569 void (*write32)(struct iwl_trans *trans, u32 ofs, u32 val);
570 u32 (*read32)(struct iwl_trans *trans, u32 ofs);
571 u32 (*read_prph)(struct iwl_trans *trans, u32 ofs);
572 void (*write_prph)(struct iwl_trans *trans, u32 ofs, u32 val);
573 int (*read_mem)(struct iwl_trans *trans, u32 addr,
574 void *buf, int dwords);
575 int (*write_mem)(struct iwl_trans *trans, u32 addr,
576 const void *buf, int dwords);
577 void (*configure)(struct iwl_trans *trans,
578 const struct iwl_trans_config *trans_cfg);
579 void (*set_pmi)(struct iwl_trans *trans, bool state);
580 bool (*grab_nic_access)(struct iwl_trans *trans, unsigned long *flags);
581 void (*release_nic_access)(struct iwl_trans *trans,
582 unsigned long *flags);
583 void (*set_bits_mask)(struct iwl_trans *trans, u32 reg, u32 mask,
585 void (*ref)(struct iwl_trans *trans);
586 void (*unref)(struct iwl_trans *trans);
587 int (*suspend)(struct iwl_trans *trans);
588 void (*resume)(struct iwl_trans *trans);
590 struct iwl_trans_dump_data *(*dump_data)(struct iwl_trans *trans,
591 const struct iwl_fw_dbg_trigger_tlv
594 void (*dump_regs)(struct iwl_trans *trans);
598 * enum iwl_trans_state - state of the transport layer
600 * @IWL_TRANS_NO_FW: no fw has sent an alive response
601 * @IWL_TRANS_FW_ALIVE: a fw has sent an alive response
603 enum iwl_trans_state {
605 IWL_TRANS_FW_ALIVE = 1,
609 * DOC: Platform power management
611 * There are two types of platform power management: system-wide
612 * (WoWLAN) and runtime.
614 * In system-wide power management the entire platform goes into a low
615 * power state (e.g. idle or suspend to RAM) at the same time and the
616 * device is configured as a wakeup source for the entire platform.
617 * This is usually triggered by userspace activity (e.g. the user
618 * presses the suspend button or a power management daemon decides to
619 * put the platform in low power mode). The device's behavior in this
620 * mode is dictated by the wake-on-WLAN configuration.
622 * In runtime power management, only the devices which are themselves
623 * idle enter a low power state. This is done at runtime, which means
624 * that the entire system is still running normally. This mode is
625 * usually triggered automatically by the device driver and requires
626 * the ability to enter and exit the low power modes in a very short
627 * time, so there is not much impact in usability.
629 * The terms used for the device's behavior are as follows:
631 * - D0: the device is fully powered and the host is awake;
632 * - D3: the device is in low power mode and only reacts to
633 * specific events (e.g. magic-packet received or scan
635 * - D0I3: the device is in low power mode and reacts to any
636 * activity (e.g. RX);
638 * These terms reflect the power modes in the firmware and are not to
639 * be confused with the physical device power state. The NIC can be
640 * in D0I3 mode even if, for instance, the PCI device is in D3 state.
644 * enum iwl_plat_pm_mode - platform power management mode
646 * This enumeration describes the device's platform power management
647 * behavior when in idle mode (i.e. runtime power management) or when
648 * in system-wide suspend (i.e WoWLAN).
650 * @IWL_PLAT_PM_MODE_DISABLED: power management is disabled for this
651 * device. At runtime, this means that nothing happens and the
652 * device always remains in active. In system-wide suspend mode,
653 * it means that the all connections will be closed automatically
654 * by mac80211 before the platform is suspended.
655 * @IWL_PLAT_PM_MODE_D3: the device goes into D3 mode (i.e. WoWLAN).
656 * For runtime power management, this mode is not officially
658 * @IWL_PLAT_PM_MODE_D0I3: the device goes into D0I3 mode.
660 enum iwl_plat_pm_mode {
661 IWL_PLAT_PM_MODE_DISABLED,
663 IWL_PLAT_PM_MODE_D0I3,
666 /* Max time to wait for trans to become idle/non-idle on d0i3
667 * enter/exit (in msecs).
669 #define IWL_TRANS_IDLE_TIMEOUT 2000
672 * struct iwl_trans - transport common data
674 * @ops - pointer to iwl_trans_ops
675 * @op_mode - pointer to the op_mode
676 * @cfg - pointer to the configuration
677 * @drv - pointer to iwl_drv
678 * @status: a bit-mask of transport status flags
679 * @dev - pointer to struct device * that represents the device
680 * @max_skb_frags: maximum number of fragments an SKB can have when transmitted.
681 * 0 indicates that frag SKBs (NETIF_F_SG) aren't supported.
682 * @hw_rf_id a u32 with the device RF ID
683 * @hw_id: a u32 with the ID of the device / sub-device.
684 * Set during transport allocation.
685 * @hw_id_str: a string with info about HW ID. Set during transport allocation.
686 * @pm_support: set to true in start_hw if link pm is supported
687 * @ltr_enabled: set to true if the LTR is enabled
688 * @wide_cmd_header: true when ucode supports wide command header format
689 * @num_rx_queues: number of RX queues allocated by the transport;
690 * the transport must set this before calling iwl_drv_start()
691 * @dev_cmd_pool: pool for Tx cmd allocation - for internal use only.
692 * The user should use iwl_trans_{alloc,free}_tx_cmd.
693 * @rx_mpdu_cmd: MPDU RX command ID, must be assigned by opmode before
694 * starting the firmware, used for tracing
695 * @rx_mpdu_cmd_hdr_size: used for tracing, amount of data before the
696 * start of the 802.11 header in the @rx_mpdu_cmd
697 * @dflt_pwr_limit: default power limit fetched from the platform (ACPI)
698 * @dbg_dest_tlv: points to the destination TLV for debug
699 * @dbg_conf_tlv: array of pointers to configuration TLVs for debug
700 * @dbg_trigger_tlv: array of pointers to triggers TLVs for debug
701 * @dbg_dest_reg_num: num of reg_ops in %dbg_dest_tlv
702 * @system_pm_mode: the system-wide power management mode in use.
703 * This mode is set dynamically, depending on the WoWLAN values
704 * configured from the userspace at runtime.
705 * @runtime_pm_mode: the runtime power management mode in use. This
706 * mode is set during the initialization phase and is not
707 * supposed to change during runtime.
710 const struct iwl_trans_ops *ops;
711 struct iwl_op_mode *op_mode;
712 const struct iwl_cfg *cfg;
714 enum iwl_trans_state state;
715 unsigned long status;
724 u8 rx_mpdu_cmd, rx_mpdu_cmd_hdr_size;
729 const struct iwl_hcmd_arr *command_groups;
730 int command_groups_size;
731 bool wide_cmd_header;
735 /* The following fields are internal only */
736 struct kmem_cache *dev_cmd_pool;
737 char dev_cmd_pool_name[50];
739 struct dentry *dbgfs_dir;
741 #ifdef CONFIG_LOCKDEP
742 struct lockdep_map sync_cmd_lockdep_map;
745 const struct iwl_fw_dbg_dest_tlv *dbg_dest_tlv;
746 const struct iwl_fw_dbg_conf_tlv *dbg_conf_tlv[FW_DBG_CONF_MAX];
747 struct iwl_fw_dbg_trigger_tlv * const *dbg_trigger_tlv;
750 enum iwl_plat_pm_mode system_pm_mode;
751 enum iwl_plat_pm_mode runtime_pm_mode;
754 /* pointer to trans specific struct */
755 /*Ensure that this pointer will always be aligned to sizeof pointer */
756 char trans_specific[0] __aligned(sizeof(void *));
759 const char *iwl_get_cmd_string(struct iwl_trans *trans, u32 id);
760 int iwl_cmd_groups_verify_sorted(const struct iwl_trans_config *trans);
762 static inline void iwl_trans_configure(struct iwl_trans *trans,
763 const struct iwl_trans_config *trans_cfg)
765 trans->op_mode = trans_cfg->op_mode;
767 trans->ops->configure(trans, trans_cfg);
768 WARN_ON(iwl_cmd_groups_verify_sorted(trans_cfg));
771 static inline int _iwl_trans_start_hw(struct iwl_trans *trans, bool low_power)
775 return trans->ops->start_hw(trans, low_power);
778 static inline int iwl_trans_start_hw(struct iwl_trans *trans)
780 return trans->ops->start_hw(trans, true);
783 static inline void iwl_trans_op_mode_leave(struct iwl_trans *trans)
787 if (trans->ops->op_mode_leave)
788 trans->ops->op_mode_leave(trans);
790 trans->op_mode = NULL;
792 trans->state = IWL_TRANS_NO_FW;
795 static inline void iwl_trans_fw_alive(struct iwl_trans *trans, u32 scd_addr)
799 trans->state = IWL_TRANS_FW_ALIVE;
801 trans->ops->fw_alive(trans, scd_addr);
804 static inline int iwl_trans_start_fw(struct iwl_trans *trans,
805 const struct fw_img *fw,
810 WARN_ON_ONCE(!trans->rx_mpdu_cmd);
812 clear_bit(STATUS_FW_ERROR, &trans->status);
813 return trans->ops->start_fw(trans, fw, run_in_rfkill);
816 static inline void _iwl_trans_stop_device(struct iwl_trans *trans,
821 trans->ops->stop_device(trans, low_power);
823 trans->state = IWL_TRANS_NO_FW;
826 static inline void iwl_trans_stop_device(struct iwl_trans *trans)
828 _iwl_trans_stop_device(trans, true);
831 static inline void iwl_trans_d3_suspend(struct iwl_trans *trans, bool test,
835 if (trans->ops->d3_suspend)
836 trans->ops->d3_suspend(trans, test, reset);
839 static inline int iwl_trans_d3_resume(struct iwl_trans *trans,
840 enum iwl_d3_status *status,
841 bool test, bool reset)
844 if (!trans->ops->d3_resume)
847 return trans->ops->d3_resume(trans, status, test, reset);
850 static inline int iwl_trans_suspend(struct iwl_trans *trans)
852 if (!trans->ops->suspend)
855 return trans->ops->suspend(trans);
858 static inline void iwl_trans_resume(struct iwl_trans *trans)
860 if (trans->ops->resume)
861 trans->ops->resume(trans);
864 static inline struct iwl_trans_dump_data *
865 iwl_trans_dump_data(struct iwl_trans *trans,
866 const struct iwl_fw_dbg_trigger_tlv *trigger)
868 if (!trans->ops->dump_data)
870 return trans->ops->dump_data(trans, trigger);
873 static inline void iwl_trans_dump_regs(struct iwl_trans *trans)
875 if (trans->ops->dump_regs)
876 trans->ops->dump_regs(trans);
879 static inline struct iwl_device_cmd *
880 iwl_trans_alloc_tx_cmd(struct iwl_trans *trans)
882 return kmem_cache_alloc(trans->dev_cmd_pool, GFP_ATOMIC);
885 int iwl_trans_send_cmd(struct iwl_trans *trans, struct iwl_host_cmd *cmd);
887 static inline void iwl_trans_free_tx_cmd(struct iwl_trans *trans,
888 struct iwl_device_cmd *dev_cmd)
890 kmem_cache_free(trans->dev_cmd_pool, dev_cmd);
893 static inline int iwl_trans_tx(struct iwl_trans *trans, struct sk_buff *skb,
894 struct iwl_device_cmd *dev_cmd, int queue)
896 if (unlikely(test_bit(STATUS_FW_ERROR, &trans->status)))
899 if (WARN_ON_ONCE(trans->state != IWL_TRANS_FW_ALIVE)) {
900 IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
904 return trans->ops->tx(trans, skb, dev_cmd, queue);
907 static inline void iwl_trans_reclaim(struct iwl_trans *trans, int queue,
908 int ssn, struct sk_buff_head *skbs)
910 if (WARN_ON_ONCE(trans->state != IWL_TRANS_FW_ALIVE)) {
911 IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
915 trans->ops->reclaim(trans, queue, ssn, skbs);
918 static inline void iwl_trans_txq_disable(struct iwl_trans *trans, int queue,
921 trans->ops->txq_disable(trans, queue, configure_scd);
925 iwl_trans_txq_enable_cfg(struct iwl_trans *trans, int queue, u16 ssn,
926 const struct iwl_trans_txq_scd_cfg *cfg,
927 unsigned int queue_wdg_timeout)
931 if (WARN_ON_ONCE(trans->state != IWL_TRANS_FW_ALIVE)) {
932 IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
936 return trans->ops->txq_enable(trans, queue, ssn,
937 cfg, queue_wdg_timeout);
941 iwl_trans_txq_free(struct iwl_trans *trans, int queue)
943 if (WARN_ON_ONCE(!trans->ops->txq_free))
946 trans->ops->txq_free(trans, queue);
950 iwl_trans_txq_alloc(struct iwl_trans *trans,
951 struct iwl_tx_queue_cfg_cmd *cmd,
953 unsigned int queue_wdg_timeout)
957 if (WARN_ON_ONCE(!trans->ops->txq_alloc))
960 if (WARN_ON_ONCE(trans->state != IWL_TRANS_FW_ALIVE)) {
961 IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
965 return trans->ops->txq_alloc(trans, cmd, cmd_id, queue_wdg_timeout);
968 static inline void iwl_trans_txq_set_shared_mode(struct iwl_trans *trans,
969 int queue, bool shared_mode)
971 if (trans->ops->txq_set_shared_mode)
972 trans->ops->txq_set_shared_mode(trans, queue, shared_mode);
975 static inline void iwl_trans_txq_enable(struct iwl_trans *trans, int queue,
976 int fifo, int sta_id, int tid,
977 int frame_limit, u16 ssn,
978 unsigned int queue_wdg_timeout)
980 struct iwl_trans_txq_scd_cfg cfg = {
984 .frame_limit = frame_limit,
985 .aggregate = sta_id >= 0,
988 iwl_trans_txq_enable_cfg(trans, queue, ssn, &cfg, queue_wdg_timeout);
992 void iwl_trans_ac_txq_enable(struct iwl_trans *trans, int queue, int fifo,
993 unsigned int queue_wdg_timeout)
995 struct iwl_trans_txq_scd_cfg cfg = {
998 .tid = IWL_MAX_TID_COUNT,
999 .frame_limit = IWL_FRAME_LIMIT,
1003 iwl_trans_txq_enable_cfg(trans, queue, 0, &cfg, queue_wdg_timeout);
1006 static inline void iwl_trans_freeze_txq_timer(struct iwl_trans *trans,
1010 if (WARN_ON_ONCE(trans->state != IWL_TRANS_FW_ALIVE)) {
1011 IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
1015 if (trans->ops->freeze_txq_timer)
1016 trans->ops->freeze_txq_timer(trans, txqs, freeze);
1019 static inline void iwl_trans_block_txq_ptrs(struct iwl_trans *trans,
1022 if (WARN_ON_ONCE(trans->state != IWL_TRANS_FW_ALIVE)) {
1023 IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
1027 if (trans->ops->block_txq_ptrs)
1028 trans->ops->block_txq_ptrs(trans, block);
1031 static inline int iwl_trans_wait_tx_queues_empty(struct iwl_trans *trans,
1034 if (WARN_ON_ONCE(!trans->ops->wait_tx_queues_empty))
1037 if (WARN_ON_ONCE(trans->state != IWL_TRANS_FW_ALIVE)) {
1038 IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
1042 return trans->ops->wait_tx_queues_empty(trans, txqs);
1045 static inline int iwl_trans_wait_txq_empty(struct iwl_trans *trans, int queue)
1047 if (WARN_ON_ONCE(!trans->ops->wait_txq_empty))
1050 if (WARN_ON_ONCE(trans->state != IWL_TRANS_FW_ALIVE)) {
1051 IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
1055 return trans->ops->wait_txq_empty(trans, queue);
1058 static inline void iwl_trans_write8(struct iwl_trans *trans, u32 ofs, u8 val)
1060 trans->ops->write8(trans, ofs, val);
1063 static inline void iwl_trans_write32(struct iwl_trans *trans, u32 ofs, u32 val)
1065 trans->ops->write32(trans, ofs, val);
1068 static inline u32 iwl_trans_read32(struct iwl_trans *trans, u32 ofs)
1070 return trans->ops->read32(trans, ofs);
1073 static inline u32 iwl_trans_read_prph(struct iwl_trans *trans, u32 ofs)
1075 return trans->ops->read_prph(trans, ofs);
1078 static inline void iwl_trans_write_prph(struct iwl_trans *trans, u32 ofs,
1081 return trans->ops->write_prph(trans, ofs, val);
1084 static inline int iwl_trans_read_mem(struct iwl_trans *trans, u32 addr,
1085 void *buf, int dwords)
1087 return trans->ops->read_mem(trans, addr, buf, dwords);
1090 #define iwl_trans_read_mem_bytes(trans, addr, buf, bufsize) \
1092 if (__builtin_constant_p(bufsize)) \
1093 BUILD_BUG_ON((bufsize) % sizeof(u32)); \
1094 iwl_trans_read_mem(trans, addr, buf, (bufsize) / sizeof(u32));\
1097 static inline u32 iwl_trans_read_mem32(struct iwl_trans *trans, u32 addr)
1101 if (WARN_ON(iwl_trans_read_mem(trans, addr, &value, 1)))
1107 static inline int iwl_trans_write_mem(struct iwl_trans *trans, u32 addr,
1108 const void *buf, int dwords)
1110 return trans->ops->write_mem(trans, addr, buf, dwords);
1113 static inline u32 iwl_trans_write_mem32(struct iwl_trans *trans, u32 addr,
1116 return iwl_trans_write_mem(trans, addr, &val, 1);
1119 static inline void iwl_trans_set_pmi(struct iwl_trans *trans, bool state)
1121 if (trans->ops->set_pmi)
1122 trans->ops->set_pmi(trans, state);
1126 iwl_trans_set_bits_mask(struct iwl_trans *trans, u32 reg, u32 mask, u32 value)
1128 trans->ops->set_bits_mask(trans, reg, mask, value);
1131 #define iwl_trans_grab_nic_access(trans, flags) \
1132 __cond_lock(nic_access, \
1133 likely((trans)->ops->grab_nic_access(trans, flags)))
1135 static inline void __releases(nic_access)
1136 iwl_trans_release_nic_access(struct iwl_trans *trans, unsigned long *flags)
1138 trans->ops->release_nic_access(trans, flags);
1139 __release(nic_access);
1142 static inline void iwl_trans_fw_error(struct iwl_trans *trans)
1144 if (WARN_ON_ONCE(!trans->op_mode))
1147 /* prevent double restarts due to the same erroneous FW */
1148 if (!test_and_set_bit(STATUS_FW_ERROR, &trans->status))
1149 iwl_op_mode_nic_error(trans->op_mode);
1152 /*****************************************************
1153 * transport helper functions
1154 *****************************************************/
1155 struct iwl_trans *iwl_trans_alloc(unsigned int priv_size,
1157 const struct iwl_cfg *cfg,
1158 const struct iwl_trans_ops *ops);
1159 void iwl_trans_free(struct iwl_trans *trans);
1160 void iwl_trans_ref(struct iwl_trans *trans);
1161 void iwl_trans_unref(struct iwl_trans *trans);
1163 /*****************************************************
1164 * driver (transport) register/unregister functions
1165 ******************************************************/
1166 int __must_check iwl_pci_register_driver(void);
1167 void iwl_pci_unregister_driver(void);
1169 #endif /* __iwl_trans_h__ */