1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Intel SST Haswell/Broadwell IPC Support
4  *
5  * Copyright (C) 2013, Intel Corporation. All rights reserved.
6  */
7 
8 #ifndef __SST_HASWELL_IPC_H
9 #define __SST_HASWELL_IPC_H
10 
11 #include <linux/types.h>
12 #include <linux/kernel.h>
13 #include <linux/platform_device.h>
14 #include <sound/asound.h>
15 
16 #define DRV_NAME "haswell-dai"
17 
18 #define SST_HSW_NO_CHANNELS		4
19 #define SST_HSW_MAX_DX_REGIONS		14
20 #define SST_HSW_DX_CONTEXT_SIZE        (640 * 1024)
21 #define SST_HSW_CHANNELS_ALL		0xffffffff
22 
23 #define SST_HSW_FW_LOG_CONFIG_DWORDS	12
24 #define SST_HSW_GLOBAL_LOG		15
25 
26 /**
27  * Upfront defined maximum message size that is
28  * expected by the in/out communication pipes in FW.
29  */
30 #define SST_HSW_IPC_MAX_PAYLOAD_SIZE	400
31 #define SST_HSW_MAX_INFO_SIZE		64
32 #define SST_HSW_BUILD_HASH_LENGTH	40
33 #define SST_HSW_IPC_MAX_SHORT_PARAMETER_SIZE	500
34 #define WAVES_PARAM_COUNT		128
35 #define WAVES_PARAM_LINES		160
36 
37 struct sst_hsw;
38 struct sst_hsw_stream;
39 struct sst_hsw_log_stream;
40 struct sst_pdata;
41 struct sst_module;
42 struct sst_module_runtime;
43 extern struct sst_ops haswell_ops;
44 
45 /* Stream Allocate Path ID */
46 enum sst_hsw_stream_path_id {
47 	SST_HSW_STREAM_PATH_SSP0_OUT = 0,
48 	SST_HSW_STREAM_PATH_SSP0_IN = 1,
49 	SST_HSW_STREAM_PATH_MAX_PATH_ID = 2,
50 };
51 
52 /* Stream Allocate Stream Type */
53 enum sst_hsw_stream_type {
54 	SST_HSW_STREAM_TYPE_RENDER = 0,
55 	SST_HSW_STREAM_TYPE_SYSTEM = 1,
56 	SST_HSW_STREAM_TYPE_CAPTURE = 2,
57 	SST_HSW_STREAM_TYPE_LOOPBACK = 3,
58 	SST_HSW_STREAM_TYPE_MAX_STREAM_TYPE = 4,
59 };
60 
61 /* Stream Allocate Stream Format */
62 enum sst_hsw_stream_format {
63 	SST_HSW_STREAM_FORMAT_PCM_FORMAT = 0,
64 	SST_HSW_STREAM_FORMAT_MP3_FORMAT = 1,
65 	SST_HSW_STREAM_FORMAT_AAC_FORMAT = 2,
66 	SST_HSW_STREAM_FORMAT_MAX_FORMAT_ID = 3,
67 };
68 
69 /* Device ID */
70 enum sst_hsw_device_id {
71 	SST_HSW_DEVICE_SSP_0   = 0,
72 	SST_HSW_DEVICE_SSP_1   = 1,
73 };
74 
75 /* Device Master Clock Frequency */
76 enum sst_hsw_device_mclk {
77 	SST_HSW_DEVICE_MCLK_OFF         = 0,
78 	SST_HSW_DEVICE_MCLK_FREQ_6_MHZ  = 1,
79 	SST_HSW_DEVICE_MCLK_FREQ_12_MHZ = 2,
80 	SST_HSW_DEVICE_MCLK_FREQ_24_MHZ = 3,
81 };
82 
83 /* Device Clock Master */
84 enum sst_hsw_device_mode {
85 	SST_HSW_DEVICE_CLOCK_SLAVE   = 0,
86 	SST_HSW_DEVICE_CLOCK_MASTER  = 1,
87 	SST_HSW_DEVICE_TDM_CLOCK_MASTER = 2,
88 };
89 
90 /* DX Power State */
91 enum sst_hsw_dx_state {
92 	SST_HSW_DX_STATE_D0     = 0,
93 	SST_HSW_DX_STATE_D1     = 1,
94 	SST_HSW_DX_STATE_D3     = 3,
95 	SST_HSW_DX_STATE_MAX	= 3,
96 };
97 
98 /* Audio stream stage IDs */
99 enum sst_hsw_fx_stage_id {
100 	SST_HSW_STAGE_ID_WAVES = 0,
101 	SST_HSW_STAGE_ID_DTS   = 1,
102 	SST_HSW_STAGE_ID_DOLBY = 2,
103 	SST_HSW_STAGE_ID_BOOST = 3,
104 	SST_HSW_STAGE_ID_MAX_FX_ID
105 };
106 
107 /* DX State Type */
108 enum sst_hsw_dx_type {
109 	SST_HSW_DX_TYPE_FW_IMAGE = 0,
110 	SST_HSW_DX_TYPE_MEMORY_DUMP = 1
111 };
112 
113 /* Volume Curve Type*/
114 enum sst_hsw_volume_curve {
115 	SST_HSW_VOLUME_CURVE_NONE = 0,
116 	SST_HSW_VOLUME_CURVE_FADE = 1
117 };
118 
119 /* Sample ordering */
120 enum sst_hsw_interleaving {
121 	SST_HSW_INTERLEAVING_PER_CHANNEL = 0,
122 	SST_HSW_INTERLEAVING_PER_SAMPLE  = 1,
123 };
124 
125 /* Channel indices */
126 enum sst_hsw_channel_index {
127 	SST_HSW_CHANNEL_LEFT            = 0,
128 	SST_HSW_CHANNEL_CENTER          = 1,
129 	SST_HSW_CHANNEL_RIGHT           = 2,
130 	SST_HSW_CHANNEL_LEFT_SURROUND   = 3,
131 	SST_HSW_CHANNEL_CENTER_SURROUND = 3,
132 	SST_HSW_CHANNEL_RIGHT_SURROUND  = 4,
133 	SST_HSW_CHANNEL_LFE             = 7,
134 	SST_HSW_CHANNEL_INVALID         = 0xF,
135 };
136 
137 /* List of supported channel maps. */
138 enum sst_hsw_channel_config {
139 	SST_HSW_CHANNEL_CONFIG_MONO      = 0, /* mono only. */
140 	SST_HSW_CHANNEL_CONFIG_STEREO    = 1, /* L & R. */
141 	SST_HSW_CHANNEL_CONFIG_2_POINT_1 = 2, /* L, R & LFE; PCM only. */
142 	SST_HSW_CHANNEL_CONFIG_3_POINT_0 = 3, /* L, C & R; MP3 & AAC only. */
143 	SST_HSW_CHANNEL_CONFIG_3_POINT_1 = 4, /* L, C, R & LFE; PCM only. */
144 	SST_HSW_CHANNEL_CONFIG_QUATRO    = 5, /* L, R, Ls & Rs; PCM only. */
145 	SST_HSW_CHANNEL_CONFIG_4_POINT_0 = 6, /* L, C, R & Cs; MP3 & AAC only. */
146 	SST_HSW_CHANNEL_CONFIG_5_POINT_0 = 7, /* L, C, R, Ls & Rs. */
147 	SST_HSW_CHANNEL_CONFIG_5_POINT_1 = 8, /* L, C, R, Ls, Rs & LFE. */
148 	SST_HSW_CHANNEL_CONFIG_DUAL_MONO = 9, /* One channel replicated in two. */
149 	SST_HSW_CHANNEL_CONFIG_INVALID,
150 };
151 
152 /* List of supported bit depths. */
153 enum sst_hsw_bitdepth {
154 	SST_HSW_DEPTH_8BIT  = 8,
155 	SST_HSW_DEPTH_16BIT = 16,
156 	SST_HSW_DEPTH_24BIT = 24, /* Default. */
157 	SST_HSW_DEPTH_32BIT = 32,
158 	SST_HSW_DEPTH_INVALID = 33,
159 };
160 
161 enum sst_hsw_module_id {
162 	SST_HSW_MODULE_BASE_FW = 0x0,
163 	SST_HSW_MODULE_MP3     = 0x1,
164 	SST_HSW_MODULE_AAC_5_1 = 0x2,
165 	SST_HSW_MODULE_AAC_2_0 = 0x3,
166 	SST_HSW_MODULE_SRC     = 0x4,
167 	SST_HSW_MODULE_WAVES   = 0x5,
168 	SST_HSW_MODULE_DOLBY   = 0x6,
169 	SST_HSW_MODULE_BOOST   = 0x7,
170 	SST_HSW_MODULE_LPAL    = 0x8,
171 	SST_HSW_MODULE_DTS     = 0x9,
172 	SST_HSW_MODULE_PCM_CAPTURE = 0xA,
173 	SST_HSW_MODULE_PCM_SYSTEM = 0xB,
174 	SST_HSW_MODULE_PCM_REFERENCE = 0xC,
175 	SST_HSW_MODULE_PCM = 0xD,
176 	SST_HSW_MODULE_BLUETOOTH_RENDER_MODULE = 0xE,
177 	SST_HSW_MODULE_BLUETOOTH_CAPTURE_MODULE = 0xF,
178 	SST_HSW_MAX_MODULE_ID,
179 };
180 
181 enum sst_hsw_performance_action {
182 	SST_HSW_PERF_START = 0,
183 	SST_HSW_PERF_STOP = 1,
184 };
185 
186 struct sst_hsw_transfer_info {
187 	uint32_t destination;       /* destination address */
188 	uint32_t reverse:1;         /* if 1 data flows from destination */
189 	uint32_t size:31;           /* transfer size in bytes.*/
190 	uint16_t first_page_offset; /* offset to data in the first page. */
191 	uint8_t  packed_pages;   /* page addresses. Each occupies 20 bits */
192 } __attribute__((packed));
193 
194 struct sst_hsw_transfer_list {
195 	uint32_t transfers_count;
196 	struct sst_hsw_transfer_info transfers;
197 } __attribute__((packed));
198 
199 struct sst_hsw_transfer_parameter {
200 	uint32_t parameter_id;
201 	uint32_t data_size;
202 	union {
203 		uint8_t data[1];
204 		struct sst_hsw_transfer_list transfer_list;
205 	};
206 } __attribute__((packed));
207 
208 /* SST firmware module info */
209 struct sst_hsw_module_info {
210 	u8 name[SST_HSW_MAX_INFO_SIZE];
211 	u8 version[SST_HSW_MAX_INFO_SIZE];
212 } __attribute__((packed));
213 
214 /* Module entry point */
215 struct sst_hsw_module_entry {
216 	enum sst_hsw_module_id module_id;
217 	u32 entry_point;
218 } __attribute__((packed));
219 
220 /* Module map - alignement matches DSP */
221 struct sst_hsw_module_map {
222 	u8 module_entries_count;
223 	struct sst_hsw_module_entry module_entries[1];
224 } __attribute__((packed));
225 
226 struct sst_hsw_memory_info {
227 	u32 offset;
228 	u32 size;
229 } __attribute__((packed));
230 
231 struct sst_hsw_fx_enable {
232 	struct sst_hsw_module_map module_map;
233 	struct sst_hsw_memory_info persistent_mem;
234 } __attribute__((packed));
235 
236 struct sst_hsw_ipc_module_config {
237 	struct sst_hsw_module_map map;
238 	struct sst_hsw_memory_info persistent_mem;
239 	struct sst_hsw_memory_info scratch_mem;
240 } __attribute__((packed));
241 
242 struct sst_hsw_get_fx_param {
243 	u32 parameter_id;
244 	u32 param_size;
245 } __attribute__((packed));
246 
247 struct sst_hsw_perf_action {
248 	u32 action;
249 } __attribute__((packed));
250 
251 struct sst_hsw_perf_data {
252 	u64 timestamp;
253 	u64 cycles;
254 	u64 datatime;
255 } __attribute__((packed));
256 
257 /* FW version */
258 struct sst_hsw_ipc_fw_version {
259 	u8 build;
260 	u8 minor;
261 	u8 major;
262 	u8 type;
263 	u8 fw_build_hash[SST_HSW_BUILD_HASH_LENGTH];
264 	u32 fw_log_providers_hash;
265 } __attribute__((packed));
266 
267 /* Stream ring info */
268 struct sst_hsw_ipc_stream_ring {
269 	u32 ring_pt_address;
270 	u32 num_pages;
271 	u32 ring_size;
272 	u32 ring_offset;
273 	u32 ring_first_pfn;
274 } __attribute__((packed));
275 
276 /* Debug Dump Log Enable Request */
277 struct sst_hsw_ipc_debug_log_enable_req {
278 	struct sst_hsw_ipc_stream_ring ringinfo;
279 	u32 config[SST_HSW_FW_LOG_CONFIG_DWORDS];
280 } __attribute__((packed));
281 
282 /* Debug Dump Log Reply */
283 struct sst_hsw_ipc_debug_log_reply {
284 	u32 log_buffer_begining;
285 	u32 log_buffer_size;
286 } __attribute__((packed));
287 
288 /* Stream glitch position */
289 struct sst_hsw_ipc_stream_glitch_position {
290 	u32 glitch_type;
291 	u32 present_pos;
292 	u32 write_pos;
293 } __attribute__((packed));
294 
295 /* Stream get position */
296 struct sst_hsw_ipc_stream_get_position {
297 	u32 position;
298 	u32 fw_cycle_count;
299 } __attribute__((packed));
300 
301 /* Stream set position */
302 struct sst_hsw_ipc_stream_set_position {
303 	u32 position;
304 	u32 end_of_buffer;
305 } __attribute__((packed));
306 
307 /* Stream Free Request */
308 struct sst_hsw_ipc_stream_free_req {
309 	u8 stream_id;
310 	u8 reserved[3];
311 } __attribute__((packed));
312 
313 /* Set Volume Request */
314 struct sst_hsw_ipc_volume_req {
315 	u32 channel;
316 	u32 target_volume;
317 	u64 curve_duration;
318 	u32 curve_type;
319 } __attribute__((packed));
320 
321 /* Device Configuration Request */
322 struct sst_hsw_ipc_device_config_req {
323 	u32 ssp_interface;
324 	u32 clock_frequency;
325 	u32 mode;
326 	u16 clock_divider;
327 	u8 channels;
328 	u8 reserved;
329 } __attribute__((packed));
330 
331 /* Audio Data formats */
332 struct sst_hsw_audio_data_format_ipc {
333 	u32 frequency;
334 	u32 bitdepth;
335 	u32 map;
336 	u32 config;
337 	u32 style;
338 	u8 ch_num;
339 	u8 valid_bit;
340 	u8 reserved[2];
341 } __attribute__((packed));
342 
343 /* Stream Allocate Request */
344 struct sst_hsw_ipc_stream_alloc_req {
345 	u8 path_id;
346 	u8 stream_type;
347 	u8 format_id;
348 	u8 reserved;
349 	struct sst_hsw_audio_data_format_ipc format;
350 	struct sst_hsw_ipc_stream_ring ringinfo;
351 	struct sst_hsw_module_map map;
352 	struct sst_hsw_memory_info persistent_mem;
353 	struct sst_hsw_memory_info scratch_mem;
354 	u32 number_of_notifications;
355 } __attribute__((packed));
356 
357 /* Stream Allocate Reply */
358 struct sst_hsw_ipc_stream_alloc_reply {
359 	u32 stream_hw_id;
360 	u32 mixer_hw_id; // returns rate ????
361 	u32 read_position_register_address;
362 	u32 presentation_position_register_address;
363 	u32 peak_meter_register_address[SST_HSW_NO_CHANNELS];
364 	u32 volume_register_address[SST_HSW_NO_CHANNELS];
365 } __attribute__((packed));
366 
367 /* Get Mixer Stream Info */
368 struct sst_hsw_ipc_stream_info_reply {
369 	u32 mixer_hw_id;
370 	u32 peak_meter_register_address[SST_HSW_NO_CHANNELS];
371 	u32 volume_register_address[SST_HSW_NO_CHANNELS];
372 } __attribute__((packed));
373 
374 /* DX State Request */
375 struct sst_hsw_ipc_dx_req {
376 	u8 state;
377 	u8 reserved[3];
378 } __attribute__((packed));
379 
380 /* DX State Reply Memory Info Item */
381 struct sst_hsw_ipc_dx_memory_item {
382 	u32 offset;
383 	u32 size;
384 	u32 source;
385 } __attribute__((packed));
386 
387 /* DX State Reply */
388 struct sst_hsw_ipc_dx_reply {
389 	u32 entries_no;
390 	struct sst_hsw_ipc_dx_memory_item mem_info[SST_HSW_MAX_DX_REGIONS];
391 } __attribute__((packed));
392 
393 struct sst_hsw_ipc_fw_version;
394 
395 /* SST Init & Free */
396 struct sst_hsw *sst_hsw_new(struct device *dev, const u8 *fw, size_t fw_length,
397 	u32 fw_offset);
398 void sst_hsw_free(struct sst_hsw *hsw);
399 int sst_hsw_fw_get_version(struct sst_hsw *hsw,
400 	struct sst_hsw_ipc_fw_version *version);
401 u32 create_channel_map(enum sst_hsw_channel_config config);
402 
403 /* Stream Mixer Controls - */
404 int sst_hsw_stream_set_volume(struct sst_hsw *hsw,
405 	struct sst_hsw_stream *stream, u32 stage_id, u32 channel, u32 volume);
406 int sst_hsw_stream_get_volume(struct sst_hsw *hsw,
407 	struct sst_hsw_stream *stream, u32 stage_id, u32 channel, u32 *volume);
408 
409 /* Global Mixer Controls - */
410 int sst_hsw_mixer_set_volume(struct sst_hsw *hsw, u32 stage_id, u32 channel,
411 	u32 volume);
412 int sst_hsw_mixer_get_volume(struct sst_hsw *hsw, u32 stage_id, u32 channel,
413 	u32 *volume);
414 
415 /* Stream API */
416 struct sst_hsw_stream *sst_hsw_stream_new(struct sst_hsw *hsw, int id,
417 	u32 (*get_write_position)(struct sst_hsw_stream *stream, void *data),
418 	void *data);
419 
420 int sst_hsw_stream_free(struct sst_hsw *hsw, struct sst_hsw_stream *stream);
421 
422 /* Stream Configuration */
423 int sst_hsw_stream_format(struct sst_hsw *hsw, struct sst_hsw_stream *stream,
424 	enum sst_hsw_stream_path_id path_id,
425 	enum sst_hsw_stream_type stream_type,
426 	enum sst_hsw_stream_format format_id);
427 
428 int sst_hsw_stream_buffer(struct sst_hsw *hsw, struct sst_hsw_stream *stream,
429 	u32 ring_pt_address, u32 num_pages,
430 	u32 ring_size, u32 ring_offset, u32 ring_first_pfn);
431 
432 int sst_hsw_stream_commit(struct sst_hsw *hsw, struct sst_hsw_stream *stream);
433 
434 int sst_hsw_stream_set_valid(struct sst_hsw *hsw, struct sst_hsw_stream *stream,
435 	u32 bits);
436 int sst_hsw_stream_set_rate(struct sst_hsw *hsw, struct sst_hsw_stream *stream,
437 	int rate);
438 int sst_hsw_stream_set_bits(struct sst_hsw *hsw, struct sst_hsw_stream *stream,
439 	enum sst_hsw_bitdepth bits);
440 int sst_hsw_stream_set_channels(struct sst_hsw *hsw,
441 	struct sst_hsw_stream *stream, int channels);
442 int sst_hsw_stream_set_map_config(struct sst_hsw *hsw,
443 	struct sst_hsw_stream *stream, u32 map,
444 	enum sst_hsw_channel_config config);
445 int sst_hsw_stream_set_style(struct sst_hsw *hsw, struct sst_hsw_stream *stream,
446 	enum sst_hsw_interleaving style);
447 int sst_hsw_stream_set_module_info(struct sst_hsw *hsw,
448 	struct sst_hsw_stream *stream, struct sst_module_runtime *runtime);
449 int sst_hsw_stream_set_pmemory_info(struct sst_hsw *hsw,
450 	struct sst_hsw_stream *stream, u32 offset, u32 size);
451 int sst_hsw_stream_set_smemory_info(struct sst_hsw *hsw,
452 	struct sst_hsw_stream *stream, u32 offset, u32 size);
453 snd_pcm_uframes_t sst_hsw_stream_get_old_position(struct sst_hsw *hsw,
454 	struct sst_hsw_stream *stream);
455 void sst_hsw_stream_set_old_position(struct sst_hsw *hsw,
456 	struct sst_hsw_stream *stream, snd_pcm_uframes_t val);
457 bool sst_hsw_stream_get_silence_start(struct sst_hsw *hsw,
458 	struct sst_hsw_stream *stream);
459 void sst_hsw_stream_set_silence_start(struct sst_hsw *hsw,
460 	struct sst_hsw_stream *stream, bool val);
461 int sst_hsw_mixer_get_info(struct sst_hsw *hsw);
462 
463 /* Stream ALSA trigger operations */
464 int sst_hsw_stream_pause(struct sst_hsw *hsw, struct sst_hsw_stream *stream,
465 	int wait);
466 int sst_hsw_stream_resume(struct sst_hsw *hsw, struct sst_hsw_stream *stream,
467 	int wait);
468 int sst_hsw_stream_reset(struct sst_hsw *hsw, struct sst_hsw_stream *stream);
469 
470 /* Stream pointer positions */
471 int sst_hsw_stream_get_read_pos(struct sst_hsw *hsw,
472 	struct sst_hsw_stream *stream, u32 *position);
473 int sst_hsw_stream_get_write_pos(struct sst_hsw *hsw,
474 	struct sst_hsw_stream *stream, u32 *position);
475 u32 sst_hsw_get_dsp_position(struct sst_hsw *hsw,
476 	struct sst_hsw_stream *stream);
477 u64 sst_hsw_get_dsp_presentation_position(struct sst_hsw *hsw,
478 	struct sst_hsw_stream *stream);
479 
480 /* HW port config */
481 int sst_hsw_device_set_config(struct sst_hsw *hsw,
482 	enum sst_hsw_device_id dev, enum sst_hsw_device_mclk mclk,
483 	enum sst_hsw_device_mode mode, u32 clock_divider);
484 
485 /* DX Config */
486 int sst_hsw_dx_set_state(struct sst_hsw *hsw,
487 	enum sst_hsw_dx_state state, struct sst_hsw_ipc_dx_reply *dx);
488 
489 /* init */
490 int sst_hsw_dsp_init(struct device *dev, struct sst_pdata *pdata);
491 void sst_hsw_dsp_free(struct device *dev, struct sst_pdata *pdata);
492 struct sst_dsp *sst_hsw_get_dsp(struct sst_hsw *hsw);
493 
494 /* fw module function */
495 void sst_hsw_init_module_state(struct sst_hsw *hsw);
496 bool sst_hsw_is_module_loaded(struct sst_hsw *hsw, u32 module_id);
497 bool sst_hsw_is_module_active(struct sst_hsw *hsw, u32 module_id);
498 void sst_hsw_set_module_enabled_rtd3(struct sst_hsw *hsw, u32 module_id);
499 void sst_hsw_set_module_disabled_rtd3(struct sst_hsw *hsw, u32 module_id);
500 bool sst_hsw_is_module_enabled_rtd3(struct sst_hsw *hsw, u32 module_id);
501 void sst_hsw_reset_param_buf(struct sst_hsw *hsw);
502 int sst_hsw_store_param_line(struct sst_hsw *hsw, u8 *buf);
503 int sst_hsw_load_param_line(struct sst_hsw *hsw, u8 *buf);
504 int sst_hsw_launch_param_buf(struct sst_hsw *hsw);
505 
506 int sst_hsw_module_load(struct sst_hsw *hsw,
507 	u32 module_id, u32 instance_id, char *name);
508 int sst_hsw_module_enable(struct sst_hsw *hsw,
509 	u32 module_id, u32 instance_id);
510 int sst_hsw_module_disable(struct sst_hsw *hsw,
511 	u32 module_id, u32 instance_id);
512 int sst_hsw_module_set_param(struct sst_hsw *hsw,
513 	u32 module_id, u32 instance_id, u32 parameter_id,
514 	u32 param_size, char *param);
515 
516 /* runtime module management */
517 struct sst_module_runtime *sst_hsw_runtime_module_create(struct sst_hsw *hsw,
518 	int mod_id, int offset);
519 void sst_hsw_runtime_module_free(struct sst_module_runtime *runtime);
520 
521 /* PM */
522 int sst_hsw_dsp_runtime_resume(struct sst_hsw *hsw);
523 int sst_hsw_dsp_runtime_suspend(struct sst_hsw *hsw);
524 int sst_hsw_dsp_load(struct sst_hsw *hsw);
525 int sst_hsw_dsp_runtime_sleep(struct sst_hsw *hsw);
526 
527 #endif
528