xref: /linux/drivers/net/wwan/iosm/iosm_ipc_imem.h (revision 0ea5c948cb64bab5bc7a5516774eb8536f05aa0d)
1 /* SPDX-License-Identifier: GPL-2.0-only
2  *
3  * Copyright (C) 2020-21 Intel Corporation.
4  */
5 
6 #ifndef IOSM_IPC_IMEM_H
7 #define IOSM_IPC_IMEM_H
8 
9 #include <linux/skbuff.h>
10 
11 #include "iosm_ipc_mmio.h"
12 #include "iosm_ipc_pcie.h"
13 #include "iosm_ipc_uevent.h"
14 #include "iosm_ipc_wwan.h"
15 #include "iosm_ipc_task_queue.h"
16 
17 struct ipc_chnl_cfg;
18 
19 /* IRQ moderation in usec */
20 #define IRQ_MOD_OFF 0
21 #define IRQ_MOD_NET 1000
22 #define IRQ_MOD_TRC 4000
23 
24 /* Either the PSI image is accepted by CP or the suspended flash tool is waken,
25  * informed that the CP ROM driver is not ready to process the PSI image.
26  * unit : milliseconds
27  */
28 #define IPC_PSI_TRANSFER_TIMEOUT 3000
29 
30 /* Timeout in 20 msec to wait for the modem to boot up to
31  * IPC_MEM_DEVICE_IPC_INIT state.
32  * unit : milliseconds (500 * ipc_util_msleep(20))
33  */
34 #define IPC_MODEM_BOOT_TIMEOUT 500
35 
36 /* Wait timeout for ipc status reflects IPC_MEM_DEVICE_IPC_UNINIT
37  * unit : milliseconds
38  */
39 #define IPC_MODEM_UNINIT_TIMEOUT_MS 30
40 
41 /* Pending time for processing data.
42  * unit : milliseconds
43  */
44 #define IPC_PEND_DATA_TIMEOUT 500
45 
46 /* The timeout in milliseconds for application to wait for remote time. */
47 #define IPC_REMOTE_TS_TIMEOUT_MS 10
48 
49 /* Timeout for TD allocation retry.
50  * unit : milliseconds
51  */
52 #define IPC_TD_ALLOC_TIMER_PERIOD_MS 100
53 
54 /* Host sleep target is host */
55 #define IPC_HOST_SLEEP_HOST 0
56 
57 /* Host sleep target is device */
58 #define IPC_HOST_SLEEP_DEVICE 1
59 
60 /* Sleep message, target host: AP enters sleep / target device: CP is
61  * allowed to enter sleep and shall use the host sleep protocol
62  */
63 #define IPC_HOST_SLEEP_ENTER_SLEEP 0
64 
65 /* Sleep_message, target host: AP exits  sleep / target device: CP is
66  * NOT allowed to enter sleep
67  */
68 #define IPC_HOST_SLEEP_EXIT_SLEEP 1
69 
70 #define IMEM_IRQ_DONT_CARE (-1)
71 
72 #define IPC_MEM_MAX_CHANNELS 8
73 
74 #define IPC_MEM_MUX_IP_SESSION_ENTRIES 8
75 
76 #define IPC_MEM_MUX_IP_CH_IF_ID 0
77 
78 #define TD_UPDATE_DEFAULT_TIMEOUT_USEC 1900
79 
80 #define FORCE_UPDATE_DEFAULT_TIMEOUT_USEC 500
81 
82 /* Sleep_message, target host: not applicable  / target device: CP is
83  * allowed to enter sleep and shall NOT use the device sleep protocol
84  */
85 #define IPC_HOST_SLEEP_ENTER_SLEEP_NO_PROTOCOL 2
86 
87 /* in_band_crash_signal IPC_MEM_INBAND_CRASH_SIG
88  * Modem crash notification configuration. If this value is non-zero then
89  * FEATURE_SET message will be sent to the Modem as a result the Modem will
90  * signal Crash via Execution Stage register. If this value is zero then Modem
91  * will use out-of-band method to notify about it's Crash.
92  */
93 #define IPC_MEM_INBAND_CRASH_SIG 1
94 
95 /* Extra headroom to be allocated for DL SKBs to allow addition of Ethernet
96  * header
97  */
98 #define IPC_MEM_DL_ETH_OFFSET 16
99 
100 #define IPC_CB(skb) ((struct ipc_skb_cb *)((skb)->cb))
101 #define IOSM_CHIP_INFO_SIZE_MAX 100
102 
103 #define FULLY_FUNCTIONAL 0
104 #define IOSM_DEVLINK_INIT 1
105 
106 /* List of the supported UL/DL pipes. */
107 enum ipc_mem_pipes {
108 	IPC_MEM_PIPE_0 = 0,
109 	IPC_MEM_PIPE_1,
110 	IPC_MEM_PIPE_2,
111 	IPC_MEM_PIPE_3,
112 	IPC_MEM_PIPE_4,
113 	IPC_MEM_PIPE_5,
114 	IPC_MEM_PIPE_6,
115 	IPC_MEM_PIPE_7,
116 	IPC_MEM_PIPE_8,
117 	IPC_MEM_PIPE_9,
118 	IPC_MEM_PIPE_10,
119 	IPC_MEM_PIPE_11,
120 	IPC_MEM_PIPE_12,
121 	IPC_MEM_PIPE_13,
122 	IPC_MEM_PIPE_14,
123 	IPC_MEM_PIPE_15,
124 	IPC_MEM_PIPE_16,
125 	IPC_MEM_PIPE_17,
126 	IPC_MEM_PIPE_18,
127 	IPC_MEM_PIPE_19,
128 	IPC_MEM_PIPE_20,
129 	IPC_MEM_PIPE_21,
130 	IPC_MEM_PIPE_22,
131 	IPC_MEM_PIPE_23,
132 	IPC_MEM_MAX_PIPES
133 };
134 
135 /* Enum defining channel states. */
136 enum ipc_channel_state {
137 	IMEM_CHANNEL_FREE,
138 	IMEM_CHANNEL_RESERVED,
139 	IMEM_CHANNEL_ACTIVE,
140 	IMEM_CHANNEL_CLOSING,
141 };
142 
143 /**
144  * enum ipc_ctype - Enum defining supported channel type needed for control
145  *		    /IP traffic.
146  * @IPC_CTYPE_WWAN:		Used for IP traffic
147  * @IPC_CTYPE_CTRL:		Used for Control Communication
148  */
149 enum ipc_ctype {
150 	IPC_CTYPE_WWAN,
151 	IPC_CTYPE_CTRL,
152 };
153 
154 /* Pipe direction. */
155 enum ipc_mem_pipe_dir {
156 	IPC_MEM_DIR_UL,
157 	IPC_MEM_DIR_DL,
158 };
159 
160 /* HP update identifier. To be used as data for ipc_cp_irq_hpda_update() */
161 enum ipc_hp_identifier {
162 	IPC_HP_MR = 0,
163 	IPC_HP_PM_TRIGGER,
164 	IPC_HP_WAKEUP_SPEC_TMR,
165 	IPC_HP_TD_UPD_TMR_START,
166 	IPC_HP_TD_UPD_TMR,
167 	IPC_HP_FAST_TD_UPD_TMR,
168 	IPC_HP_UL_WRITE_TD,
169 	IPC_HP_DL_PROCESS,
170 	IPC_HP_NET_CHANNEL_INIT,
171 	IPC_HP_CDEV_OPEN,
172 };
173 
174 /**
175  * struct ipc_pipe - Structure for Pipe.
176  * @tdr_start:			Ipc private protocol Transfer Descriptor Ring
177  * @channel:			Id of the sio device, set by imem_sio_open,
178  *				needed to pass DL char to the user terminal
179  * @skbr_start:			Circular buffer for skbuf and the buffer
180  *				reference in a tdr_start entry.
181  * @phy_tdr_start:		Transfer descriptor start address
182  * @old_head:			last head pointer reported to CP.
183  * @old_tail:			AP read position before CP moves the read
184  *				position to write/head. If CP has consumed the
185  *				buffers, AP has to freed the skbuf starting at
186  *				tdr_start[old_tail].
187  * @nr_of_entries:		Number of elements of skb_start and tdr_start.
188  * @max_nr_of_queued_entries:	Maximum number of queued entries in TDR
189  * @accumulation_backoff:	Accumulation in usec for accumulation
190  *				backoff (0 = no acc backoff)
191  * @irq_moderation:		timer in usec for irq_moderation
192  *				(0=no irq moderation)
193  * @pipe_nr:			Pipe identification number
194  * @irq:			Interrupt vector
195  * @dir:			Direction of data stream in pipe
196  * @buf_size:			Buffer size (in bytes) for preallocated
197  *				buffers (for DL pipes)
198  * @nr_of_queued_entries:	Aueued number of entries
199  * @is_open:			Check for open pipe status
200  */
201 struct ipc_pipe {
202 	struct ipc_protocol_td *tdr_start;
203 	struct ipc_mem_channel *channel;
204 	struct sk_buff **skbr_start;
205 	dma_addr_t phy_tdr_start;
206 	u32 old_head;
207 	u32 old_tail;
208 	u32 nr_of_entries;
209 	u32 max_nr_of_queued_entries;
210 	u32 accumulation_backoff;
211 	u32 irq_moderation;
212 	u32 pipe_nr;
213 	u32 irq;
214 	enum ipc_mem_pipe_dir dir;
215 	u32 buf_size;
216 	u16 nr_of_queued_entries;
217 	u8 is_open:1;
218 };
219 
220 /**
221  * struct ipc_mem_channel - Structure for Channel.
222  * @channel_id:		Instance of the channel list and is return to the user
223  *			at the end of the open operation.
224  * @ctype:		Control or netif channel.
225  * @index:		unique index per ctype
226  * @ul_pipe:		pipe objects
227  * @dl_pipe:		pipe objects
228  * @if_id:		Interface ID
229  * @net_err_count:	Number of downlink errors returned by ipc_wwan_receive
230  *			interface at the entry point of the IP stack.
231  * @state:		Free, reserved or busy (in use).
232  * @ul_sem:		Needed for the blocking write or uplink transfer.
233  * @ul_list:		Uplink accumulator which is filled by the uplink
234  *			char app or IP stack. The socket buffer pointer are
235  *			added to the descriptor list in the kthread context.
236  */
237 struct ipc_mem_channel {
238 	int channel_id;
239 	enum ipc_ctype ctype;
240 	int index;
241 	struct ipc_pipe ul_pipe;
242 	struct ipc_pipe dl_pipe;
243 	int if_id;
244 	u32 net_err_count;
245 	enum ipc_channel_state state;
246 	struct completion ul_sem;
247 	struct sk_buff_head ul_list;
248 };
249 
250 /**
251  * enum ipc_phase - Different AP and CP phases.
252  *		    The enums defined after "IPC_P_ROM" and before
253  *		    "IPC_P_RUN" indicates the operating state where CP can
254  *		    respond to any requests. So while introducing new phase
255  *		    this shall be taken into consideration.
256  * @IPC_P_OFF:		On host PC, the PCIe device link settings are known
257  *			about the combined power on. PC is running, the driver
258  *			is loaded and CP is in power off mode. The PCIe bus
259  *			driver call the device power mode D3hot. In this phase
260  *			the driver the polls the device, until the device is in
261  *			the power on state and signals the power mode D0.
262  * @IPC_P_OFF_REQ:	The intermediate phase between cleanup activity starts
263  *			and ends.
264  * @IPC_P_CRASH:	The phase indicating CP crash
265  * @IPC_P_CD_READY:	The phase indicating CP core dump is ready
266  * @IPC_P_ROM:		After power on, CP starts in ROM mode and the IPC ROM
267  *			driver is waiting 150 ms for the AP active notification
268  *			saved in the PCI link status register.
269  * @IPC_P_PSI:		Primary signed image download phase
270  * @IPC_P_EBL:		Extended bootloader pahse
271  * @IPC_P_RUN:		The phase after flashing to RAM is the RUNTIME phase.
272  */
273 enum ipc_phase {
274 	IPC_P_OFF,
275 	IPC_P_OFF_REQ,
276 	IPC_P_CRASH,
277 	IPC_P_CD_READY,
278 	IPC_P_ROM,
279 	IPC_P_PSI,
280 	IPC_P_EBL,
281 	IPC_P_RUN,
282 };
283 
284 /**
285  * struct iosm_imem - Current state of the IPC shared memory.
286  * @mmio:			mmio instance to access CP MMIO area /
287  *				doorbell scratchpad.
288  * @ipc_protocol:		IPC Protocol instance
289  * @ipc_task:			Task for entry into ipc task queue
290  * @wwan:			WWAN device pointer
291  * @mux:			IP Data multiplexing state.
292  * @sio:			IPC SIO data structure pointer
293  * @ipc_port:			IPC PORT data structure pointer
294  * @pcie:			IPC PCIe
295  * @trace:			IPC trace data structure pointer
296  * @dev:			Pointer to device structure
297  * @ipc_requested_state:	Expected IPC state on CP.
298  * @channels:			Channel list with UL/DL pipe pairs.
299  * @ipc_devlink:		IPC Devlink data structure pointer
300  * @ipc_status:			local ipc_status
301  * @nr_of_channels:		number of configured channels
302  * @startup_timer:		startup timer for NAND support.
303  * @hrtimer_period:		Hr timer period
304  * @tdupdate_timer:		Delay the TD update doorbell.
305  * @fast_update_timer:		forced head pointer update delay timer.
306  * @td_alloc_timer:		Timer for DL pipe TD allocation retry
307  * @adb_timer:			Timer for finishing the ADB.
308  * @rom_exit_code:		Mapped boot rom exit code.
309  * @enter_runtime:		1 means the transition to runtime phase was
310  *				executed.
311  * @ul_pend_sem:		Semaphore to wait/complete of UL TDs
312  *				before closing pipe.
313  * @app_notify_ul_pend:		Signal app if UL TD is pending
314  * @dl_pend_sem:		Semaphore to wait/complete of DL TDs
315  *				before closing pipe.
316  * @app_notify_dl_pend:		Signal app if DL TD is pending
317  * @phase:			Operating phase like runtime.
318  * @pci_device_id:		Device ID
319  * @cp_version:			CP version
320  * @device_sleep:		Device sleep state
321  * @run_state_worker:		Pointer to worker component for device
322  *				setup operations to be called when modem
323  *				reaches RUN state
324  * @ev_irq_pending:		0 means inform the IPC tasklet to
325  *				process the irq actions.
326  * @flag:			Flag to monitor the state of driver
327  * @td_update_timer_suspended:	if true then td update timer suspend
328  * @ev_mux_net_transmit_pending:0 means inform the IPC tasklet to pass
329  * @reset_det_n:		Reset detect flag
330  * @pcie_wake_n:		Pcie wake flag
331  * @debugfs_wwan_dir:		WWAN Debug FS directory entry
332  * @debugfs_dir:		Debug FS directory for driver-specific entries
333  */
334 struct iosm_imem {
335 	struct iosm_mmio *mmio;
336 	struct iosm_protocol *ipc_protocol;
337 	struct ipc_task *ipc_task;
338 	struct iosm_wwan *wwan;
339 	struct iosm_mux *mux;
340 	struct iosm_cdev *ipc_port[IPC_MEM_MAX_CHANNELS];
341 	struct iosm_pcie *pcie;
342 #ifdef CONFIG_WWAN_DEBUGFS
343 	struct iosm_trace *trace;
344 #endif
345 	struct device *dev;
346 	enum ipc_mem_device_ipc_state ipc_requested_state;
347 	struct ipc_mem_channel channels[IPC_MEM_MAX_CHANNELS];
348 	struct iosm_devlink *ipc_devlink;
349 	u32 ipc_status;
350 	u32 nr_of_channels;
351 	struct hrtimer startup_timer;
352 	ktime_t hrtimer_period;
353 	struct hrtimer tdupdate_timer;
354 	struct hrtimer fast_update_timer;
355 	struct hrtimer td_alloc_timer;
356 	struct hrtimer adb_timer;
357 	enum rom_exit_code rom_exit_code;
358 	u32 enter_runtime;
359 	struct completion ul_pend_sem;
360 	u32 app_notify_ul_pend;
361 	struct completion dl_pend_sem;
362 	u32 app_notify_dl_pend;
363 	enum ipc_phase phase;
364 	u16 pci_device_id;
365 	int cp_version;
366 	int device_sleep;
367 	struct work_struct run_state_worker;
368 	u8 ev_irq_pending[IPC_IRQ_VECTORS];
369 	unsigned long flag;
370 	u8 td_update_timer_suspended:1,
371 	   ev_mux_net_transmit_pending:1,
372 	   reset_det_n:1,
373 	   pcie_wake_n:1;
374 #ifdef CONFIG_WWAN_DEBUGFS
375 	struct dentry *debugfs_wwan_dir;
376 	struct dentry *debugfs_dir;
377 #endif
378 };
379 
380 /**
381  * ipc_imem_init - Initialize the shared memory region
382  * @pcie:	Pointer to core driver data-struct
383  * @device_id:	PCI device ID
384  * @mmio:	Pointer to the mmio area
385  * @dev:	Pointer to device structure
386  *
387  * Returns:  Initialized imem pointer on success else NULL
388  */
389 struct iosm_imem *ipc_imem_init(struct iosm_pcie *pcie, unsigned int device_id,
390 				void __iomem *mmio, struct device *dev);
391 
392 /**
393  * ipc_imem_pm_s2idle_sleep - Set PM variables to sleep/active for
394  *			      s2idle sleep/active
395  * @ipc_imem:	Pointer to imem data-struct
396  * @sleep:	Set PM Variable to sleep/active
397  */
398 void ipc_imem_pm_s2idle_sleep(struct iosm_imem *ipc_imem, bool sleep);
399 
400 /**
401  * ipc_imem_pm_suspend - The HAL shall ask the shared memory layer
402  *			 whether D3 is allowed.
403  * @ipc_imem:	Pointer to imem data-struct
404  */
405 void ipc_imem_pm_suspend(struct iosm_imem *ipc_imem);
406 
407 /**
408  * ipc_imem_pm_resume - The HAL shall inform the shared memory layer
409  *			that the device is active.
410  * @ipc_imem:	Pointer to imem data-struct
411  */
412 void ipc_imem_pm_resume(struct iosm_imem *ipc_imem);
413 
414 /**
415  * ipc_imem_cleanup -	Inform CP and free the shared memory resources.
416  * @ipc_imem:	Pointer to imem data-struct
417  */
418 void ipc_imem_cleanup(struct iosm_imem *ipc_imem);
419 
420 /**
421  * ipc_imem_irq_process - Shift the IRQ actions to the IPC thread.
422  * @ipc_imem:	Pointer to imem data-struct
423  * @irq:	Irq number
424  */
425 void ipc_imem_irq_process(struct iosm_imem *ipc_imem, int irq);
426 
427 /**
428  * imem_get_device_sleep_state - Get the device sleep state value.
429  * @ipc_imem:	Pointer to imem instance
430  *
431  * Returns: device sleep state
432  */
433 int imem_get_device_sleep_state(struct iosm_imem *ipc_imem);
434 
435 /**
436  * ipc_imem_td_update_timer_suspend - Updates the TD Update Timer suspend flag.
437  * @ipc_imem:	Pointer to imem data-struct
438  * @suspend:	Flag to update. If TRUE then HP update doorbell is triggered to
439  *		device without any wait. If FALSE then HP update doorbell is
440  *		delayed until timeout.
441  */
442 void ipc_imem_td_update_timer_suspend(struct iosm_imem *ipc_imem, bool suspend);
443 
444 /**
445  * ipc_imem_channel_close - Release the channel resources.
446  * @ipc_imem:		Pointer to imem data-struct
447  * @channel_id:		Channel ID to be cleaned up.
448  */
449 void ipc_imem_channel_close(struct iosm_imem *ipc_imem, int channel_id);
450 
451 /**
452  * ipc_imem_channel_alloc - Reserves a channel
453  * @ipc_imem:	Pointer to imem data-struct
454  * @index:	ID to lookup from the preallocated list.
455  * @ctype:	Channel type.
456  *
457  * Returns: Index on success and failure value on error
458  */
459 int ipc_imem_channel_alloc(struct iosm_imem *ipc_imem, int index,
460 			   enum ipc_ctype ctype);
461 
462 /**
463  * ipc_imem_channel_open - Establish the pipes.
464  * @ipc_imem:		Pointer to imem data-struct
465  * @channel_id:		Channel ID returned during alloc.
466  * @db_id:		Doorbell ID for trigger identifier.
467  *
468  * Returns: Pointer of ipc_mem_channel on success and NULL on failure.
469  */
470 struct ipc_mem_channel *ipc_imem_channel_open(struct iosm_imem *ipc_imem,
471 					      int channel_id, u32 db_id);
472 
473 /**
474  * ipc_imem_td_update_timer_start - Starts the TD Update Timer if not running.
475  * @ipc_imem:	Pointer to imem data-struct
476  */
477 void ipc_imem_td_update_timer_start(struct iosm_imem *ipc_imem);
478 
479 /**
480  * ipc_imem_ul_write_td - Pass the channel UL list to protocol layer for TD
481  *		      preparation and sending them to the device.
482  * @ipc_imem:	Pointer to imem data-struct
483  *
484  * Returns: TRUE of HP Doorbell trigger is pending. FALSE otherwise.
485  */
486 bool ipc_imem_ul_write_td(struct iosm_imem *ipc_imem);
487 
488 /**
489  * ipc_imem_ul_send - Dequeue SKB from channel list and start with
490  *		  the uplink transfer.If HP Doorbell is pending to be
491  *		  triggered then starts the TD Update Timer.
492  * @ipc_imem:	Pointer to imem data-struct
493  */
494 void ipc_imem_ul_send(struct iosm_imem *ipc_imem);
495 
496 /**
497  * ipc_imem_channel_update - Set or modify pipe config of an existing channel
498  * @ipc_imem:		Pointer to imem data-struct
499  * @id:			Channel config index
500  * @chnl_cfg:		Channel config struct
501  * @irq_moderation:	Timer in usec for irq_moderation
502  */
503 void ipc_imem_channel_update(struct iosm_imem *ipc_imem, int id,
504 			     struct ipc_chnl_cfg chnl_cfg, u32 irq_moderation);
505 
506 /**
507  * ipc_imem_channel_free -Free an IPC channel.
508  * @channel:	Channel to be freed
509  */
510 void ipc_imem_channel_free(struct ipc_mem_channel *channel);
511 
512 /**
513  * ipc_imem_hrtimer_stop - Stop the hrtimer
514  * @hr_timer:	Pointer to hrtimer instance
515  */
516 void ipc_imem_hrtimer_stop(struct hrtimer *hr_timer);
517 
518 /**
519  * ipc_imem_pipe_cleanup - Reset volatile pipe content for all channels
520  * @ipc_imem:	Pointer to imem data-struct
521  * @pipe:	Pipe to cleaned up
522  */
523 void ipc_imem_pipe_cleanup(struct iosm_imem *ipc_imem, struct ipc_pipe *pipe);
524 
525 /**
526  * ipc_imem_pipe_close - Send msg to device to close pipe
527  * @ipc_imem:	Pointer to imem data-struct
528  * @pipe:	Pipe to be closed
529  */
530 void ipc_imem_pipe_close(struct iosm_imem *ipc_imem, struct ipc_pipe *pipe);
531 
532 /**
533  * ipc_imem_phase_update - Get the CP execution state
534  *			  and map it to the AP phase.
535  * @ipc_imem:	Pointer to imem data-struct
536  *
537  * Returns: Current ap updated phase
538  */
539 enum ipc_phase ipc_imem_phase_update(struct iosm_imem *ipc_imem);
540 
541 /**
542  * ipc_imem_phase_get_string - Return the current operation
543  *			     phase as string.
544  * @phase:	AP phase
545  *
546  * Returns: AP phase string
547  */
548 const char *ipc_imem_phase_get_string(enum ipc_phase phase);
549 
550 /**
551  * ipc_imem_msg_send_feature_set - Send feature set message to modem
552  * @ipc_imem:		Pointer to imem data-struct
553  * @reset_enable:	0 = out-of-band, 1 = in-band-crash notification
554  * @atomic_ctx:		if disabled call in tasklet context
555  *
556  */
557 void ipc_imem_msg_send_feature_set(struct iosm_imem *ipc_imem,
558 				   unsigned int reset_enable, bool atomic_ctx);
559 
560 /**
561  * ipc_imem_ipc_init_check - Send the init event to CP, wait a certain time and
562  *			     set CP to runtime with the context information
563  * @ipc_imem:	Pointer to imem data-struct
564  */
565 void ipc_imem_ipc_init_check(struct iosm_imem *ipc_imem);
566 
567 /**
568  * ipc_imem_channel_init - Initialize the channel list with UL/DL pipe pairs.
569  * @ipc_imem:		Pointer to imem data-struct
570  * @ctype:		Channel type
571  * @chnl_cfg:		Channel configuration struct
572  * @irq_moderation:	Timer in usec for irq_moderation
573  */
574 void ipc_imem_channel_init(struct iosm_imem *ipc_imem, enum ipc_ctype ctype,
575 			   struct ipc_chnl_cfg chnl_cfg, u32 irq_moderation);
576 
577 /**
578  * ipc_imem_devlink_trigger_chip_info - Inform devlink that the chip
579  *					information are available if the
580  *					flashing to RAM interworking shall be
581  *					executed.
582  * @ipc_imem:	Pointer to imem structure
583  *
584  * Returns: 0 on success, -1 on failure
585  */
586 int ipc_imem_devlink_trigger_chip_info(struct iosm_imem *ipc_imem);
587 
588 void ipc_imem_adb_timer_start(struct iosm_imem *ipc_imem);
589 
590 #endif
591