1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * HD-audio controller (Azalia) registers and helpers
4 *
5 * For traditional reasons, we still use azx_ prefix here
6 */
7
8 #ifndef __SOUND_HDA_REGISTER_H
9 #define __SOUND_HDA_REGISTER_H
10
11 #include <linux/io.h>
12 #include <sound/hdaudio.h>
13
14 #define AZX_REG_GCAP 0x00
15 #define AZX_GCAP_64OK (1 << 0) /* 64bit address support */
16 #define AZX_GCAP_NSDO (3 << 1) /* # of serial data out signals */
17 #define AZX_GCAP_BSS (31 << 3) /* # of bidirectional streams */
18 #define AZX_GCAP_ISS (15 << 8) /* # of input streams */
19 #define AZX_GCAP_OSS (15 << 12) /* # of output streams */
20 #define AZX_REG_VMIN 0x02
21 #define AZX_REG_VMAJ 0x03
22 #define AZX_REG_OUTPAY 0x04
23 #define AZX_REG_INPAY 0x06
24 #define AZX_REG_GCTL 0x08
25 #define AZX_GCTL_RESET (1 << 0) /* controller reset */
26 #define AZX_GCTL_FCNTRL (1 << 1) /* flush control */
27 #define AZX_GCTL_UNSOL (1 << 8) /* accept unsol. response enable */
28 #define AZX_REG_WAKEEN 0x0c
29 #define AZX_REG_STATESTS 0x0e
30 #define AZX_REG_GSTS 0x10
31 #define AZX_GSTS_FSTS (1 << 1) /* flush status */
32 #define AZX_REG_GCAP2 0x12
33 #define AZX_REG_LLCH 0x14
34 #define AZX_REG_OUTSTRMPAY 0x18
35 #define AZX_REG_INSTRMPAY 0x1A
36 #define AZX_REG_INTCTL 0x20
37 #define AZX_REG_INTSTS 0x24
38 #define AZX_REG_WALLCLK 0x30 /* 24Mhz source */
39 #define AZX_REG_OLD_SSYNC 0x34 /* SSYNC for old ICH */
40 #define AZX_REG_SSYNC 0x38
41 #define AZX_REG_CORBLBASE 0x40
42 #define AZX_REG_CORBUBASE 0x44
43 #define AZX_REG_CORBWP 0x48
44 #define AZX_REG_CORBRP 0x4a
45 #define AZX_CORBRP_RST (1 << 15) /* read pointer reset */
46 #define AZX_REG_CORBCTL 0x4c
47 #define AZX_CORBCTL_RUN (1 << 1) /* enable DMA */
48 #define AZX_CORBCTL_CMEIE (1 << 0) /* enable memory error irq */
49 #define AZX_REG_CORBSTS 0x4d
50 #define AZX_CORBSTS_CMEI (1 << 0) /* memory error indication */
51 #define AZX_REG_CORBSIZE 0x4e
52
53 #define AZX_REG_RIRBLBASE 0x50
54 #define AZX_REG_RIRBUBASE 0x54
55 #define AZX_REG_RIRBWP 0x58
56 #define AZX_RIRBWP_RST (1 << 15) /* write pointer reset */
57 #define AZX_REG_RINTCNT 0x5a
58 #define AZX_REG_RIRBCTL 0x5c
59 #define AZX_RBCTL_IRQ_EN (1 << 0) /* enable IRQ */
60 #define AZX_RBCTL_DMA_EN (1 << 1) /* enable DMA */
61 #define AZX_RBCTL_OVERRUN_EN (1 << 2) /* enable overrun irq */
62 #define AZX_REG_RIRBSTS 0x5d
63 #define AZX_RBSTS_IRQ (1 << 0) /* response irq */
64 #define AZX_RBSTS_OVERRUN (1 << 2) /* overrun irq */
65 #define AZX_REG_RIRBSIZE 0x5e
66
67 #define AZX_REG_IC 0x60
68 #define AZX_REG_IR 0x64
69 #define AZX_REG_IRS 0x68
70 #define AZX_IRS_VALID (1<<1)
71 #define AZX_IRS_BUSY (1<<0)
72
73 #define AZX_REG_DPLBASE 0x70
74 #define AZX_REG_DPUBASE 0x74
75 #define AZX_DPLBASE_ENABLE 0x1 /* Enable position buffer */
76
77 /* SD offset: SDI0=0x80, SDI1=0xa0, ... SDO3=0x160 */
78 enum { SDI0, SDI1, SDI2, SDI3, SDO0, SDO1, SDO2, SDO3 };
79
80 /* stream register offsets from stream base */
81 #define AZX_REG_SD_CTL 0x00
82 #define AZX_REG_SD_CTL_3B 0x02 /* 3rd byte of SD_CTL register */
83 #define AZX_REG_SD_STS 0x03
84 #define AZX_REG_SD_LPIB 0x04
85 #define AZX_REG_SD_CBL 0x08
86 #define AZX_REG_SD_LVI 0x0c
87 #define AZX_REG_SD_FIFOW 0x0e
88 #define AZX_REG_SD_FIFOSIZE 0x10
89 #define AZX_REG_SD_FORMAT 0x12
90 #define AZX_REG_SD_FIFOL 0x14
91 #define AZX_REG_SD_BDLPL 0x18
92 #define AZX_REG_SD_BDLPU 0x1c
93
94 /* GTS registers */
95 #define AZX_REG_LLCH 0x14
96
97 #define AZX_REG_GTS_BASE 0x520
98
99 #define AZX_REG_GTSCC (AZX_REG_GTS_BASE + 0x00)
100 #define AZX_REG_WALFCC (AZX_REG_GTS_BASE + 0x04)
101 #define AZX_REG_TSCCL (AZX_REG_GTS_BASE + 0x08)
102 #define AZX_REG_TSCCU (AZX_REG_GTS_BASE + 0x0C)
103 #define AZX_REG_LLPFOC (AZX_REG_GTS_BASE + 0x14)
104 #define AZX_REG_LLPCL (AZX_REG_GTS_BASE + 0x18)
105 #define AZX_REG_LLPCU (AZX_REG_GTS_BASE + 0x1C)
106
107 /* Haswell/Broadwell display HD-A controller Extended Mode registers */
108 #define AZX_REG_HSW_EM4 0x100c
109 #define AZX_REG_HSW_EM5 0x1010
110
111 /* Skylake/Broxton vendor-specific registers */
112 #define AZX_REG_VS_EM1 0x1000
113 #define AZX_REG_VS_INRC 0x1004
114 #define AZX_REG_VS_OUTRC 0x1008
115 #define AZX_REG_VS_FIFOTRK 0x100C
116 #define AZX_REG_VS_FIFOTRK2 0x1010
117 #define AZX_REG_VS_EM2 0x1030
118 #define AZX_REG_VS_EM3L 0x1038
119 #define AZX_REG_VS_EM3U 0x103C
120 #define AZX_REG_VS_EM4L 0x1040
121 #define AZX_REG_VS_EM4U 0x1044
122 #define AZX_REG_VS_LTRP 0x1048
123 #define AZX_REG_VS_D0I3C 0x104A
124 #define AZX_REG_VS_PCE 0x104B
125 #define AZX_REG_VS_L2MAGC 0x1050
126 #define AZX_REG_VS_L2LAHPT 0x1054
127 #define AZX_REG_VS_SDXDPIB_XBASE 0x1084
128 #define AZX_REG_VS_SDXDPIB_XINTERVAL 0x20
129 #define AZX_REG_VS_SDXEFIFOS_XBASE 0x1094
130 #define AZX_REG_VS_SDXEFIFOS_XINTERVAL 0x20
131
132 /* PCI space */
133 #define AZX_PCIREG_TCSEL 0x44
134
135 /*
136 * other constants
137 */
138
139 /* max number of fragments - we may use more if allocating more pages for BDL */
140 #define BDL_SIZE 4096
141 #define AZX_MAX_BDL_ENTRIES (BDL_SIZE / 16)
142 #define AZX_MAX_FRAG 32
143 /*
144 * max buffer size - artificial 4MB limit per stream to avoid big allocations
145 * In theory it can be really big, but as it is per stream on systems with many streams memory could
146 * be quickly saturated if userspace requests maximum buffer size for each of them.
147 */
148 #define AZX_MAX_BUF_SIZE (4*1024*1024)
149
150 /* RIRB int mask: overrun[2], response[0] */
151 #define RIRB_INT_RESPONSE 0x01
152 #define RIRB_INT_OVERRUN 0x04
153 #define RIRB_INT_MASK 0x05
154
155 /* STATESTS int mask: S3,SD2,SD1,SD0 */
156 #define STATESTS_INT_MASK ((1 << HDA_MAX_CODECS) - 1)
157
158 /* SD_CTL bits */
159 #define SD_CTL_STREAM_RESET 0x01 /* stream reset bit */
160 #define SD_CTL_DMA_START 0x02 /* stream DMA start bit */
161 #define SD_CTL_STRIPE (3 << 16) /* stripe control */
162 #define SD_CTL_TRAFFIC_PRIO (1 << 18) /* traffic priority */
163 #define SD_CTL_DIR (1 << 19) /* bi-directional stream */
164 #define SD_CTL_STREAM_TAG_MASK (0xf << 20)
165 #define SD_CTL_STREAM_TAG_SHIFT 20
166
167 /* SD_CTL and SD_STS */
168 #define SD_INT_DESC_ERR 0x10 /* descriptor error interrupt */
169 #define SD_INT_FIFO_ERR 0x08 /* FIFO error interrupt */
170 #define SD_INT_COMPLETE 0x04 /* completion interrupt */
171 #define SD_INT_MASK (SD_INT_DESC_ERR|SD_INT_FIFO_ERR|\
172 SD_INT_COMPLETE)
173 #define SD_CTL_STRIPE_MASK 0x3 /* stripe control mask */
174
175 /* SD_STS */
176 #define SD_STS_FIFO_READY 0x20 /* FIFO ready */
177
178 /* INTCTL and INTSTS */
179 #define AZX_INT_ALL_STREAM 0xff /* all stream interrupts */
180 #define AZX_INT_CTRL_EN 0x40000000 /* controller interrupt enable bit */
181 #define AZX_INT_GLOBAL_EN 0x80000000 /* global interrupt enable bit */
182
183 /* below are so far hardcoded - should read registers in future */
184 #define AZX_MAX_CORB_ENTRIES 256
185 #define AZX_MAX_RIRB_ENTRIES 256
186
187 /* Capability header Structure */
188 #define AZX_REG_CAP_HDR 0x0
189 #define AZX_CAP_HDR_VER_OFF 28
190 #define AZX_CAP_HDR_VER_MASK (0xF << AZX_CAP_HDR_VER_OFF)
191 #define AZX_CAP_HDR_ID_OFF 16
192 #define AZX_CAP_HDR_ID_MASK (0xFFF << AZX_CAP_HDR_ID_OFF)
193 #define AZX_CAP_HDR_NXT_PTR_MASK 0xFFFF
194
195 /* registers of Software Position Based FIFO Capability Structure */
196 #define AZX_SPB_CAP_ID 0x4
197 #define AZX_REG_SPB_BASE_ADDR 0x700
198 #define AZX_REG_SPB_SPBFCH 0x00
199 #define AZX_REG_SPB_SPBFCCTL 0x04
200 /* Base used to calculate the iterating register offset */
201 #define AZX_SPB_BASE 0x08
202 /* Interval used to calculate the iterating register offset */
203 #define AZX_SPB_INTERVAL 0x08
204 /* SPIB base */
205 #define AZX_SPB_SPIB 0x00
206 /* SPIB MAXFIFO base*/
207 #define AZX_SPB_MAXFIFO 0x04
208
209 /* registers of Global Time Synchronization Capability Structure */
210 #define AZX_GTS_CAP_ID 0x1
211 #define AZX_REG_GTS_GTSCH 0x00
212 #define AZX_REG_GTS_GTSCD 0x04
213 #define AZX_REG_GTS_GTSCTLAC 0x0C
214 #define AZX_GTS_BASE 0x20
215 #define AZX_GTS_INTERVAL 0x20
216
217 /* registers for Processing Pipe Capability Structure */
218 #define AZX_PP_CAP_ID 0x3
219 #define AZX_REG_PP_PPCH 0x10
220 #define AZX_REG_PP_PPCTL 0x04
221 #define AZX_PPCTL_PIE (1<<31)
222 #define AZX_PPCTL_GPROCEN (1<<30)
223 /* _X_ = dma engine # and cannot * exceed 29 (per spec max 30 dma engines) */
224 #define AZX_PPCTL_PROCEN(_X_) (1<<(_X_))
225
226 #define AZX_REG_PP_PPSTS 0x08
227
228 #define AZX_PPHC_BASE 0x10
229 #define AZX_PPHC_INTERVAL 0x10
230
231 #define AZX_REG_PPHCLLPL 0x0
232 #define AZX_REG_PPHCLLPU 0x4
233 #define AZX_REG_PPHCLDPL 0x8
234 #define AZX_REG_PPHCLDPU 0xC
235
236 #define AZX_PPLC_BASE 0x10
237 #define AZX_PPLC_MULTI 0x10
238 #define AZX_PPLC_INTERVAL 0x10
239
240 #define AZX_REG_PPLCCTL 0x0
241 #define AZX_PPLCCTL_STRM_BITS 4
242 #define AZX_PPLCCTL_STRM_SHIFT 20
243 #define AZX_REG_MASK(bit_num, offset) \
244 (((1 << (bit_num)) - 1) << (offset))
245 #define AZX_PPLCCTL_STRM_MASK \
246 AZX_REG_MASK(AZX_PPLCCTL_STRM_BITS, AZX_PPLCCTL_STRM_SHIFT)
247 #define AZX_PPLCCTL_RUN (1<<1)
248 #define AZX_PPLCCTL_STRST (1<<0)
249
250 #define AZX_REG_PPLCFMT 0x4
251 #define AZX_REG_PPLCLLPL 0x8
252 #define AZX_REG_PPLCLLPU 0xC
253
254 /* registers for Multiple Links Capability Structure */
255 #define AZX_ML_CAP_ID 0x2
256 #define AZX_REG_ML_MLCH 0x00
257 #define AZX_REG_ML_MLCD 0x04
258 #define AZX_ML_BASE 0x40
259 #define AZX_ML_INTERVAL 0x40
260
261 /* HDaudio registers valid for HDaudio and HDaudio extended links */
262 #define AZX_REG_ML_LCAP 0x00
263
264 #define AZX_ML_HDA_LCAP_ALT BIT(28)
265 #define AZX_ML_HDA_LCAP_ALT_HDA 0x0
266 #define AZX_ML_HDA_LCAP_ALT_HDA_EXT 0x1
267
268 #define AZX_ML_HDA_LCAP_INTC BIT(27) /* only used if ALT == 1 */
269 #define AZX_ML_HDA_LCAP_OFLS BIT(26) /* only used if ALT == 1 */
270 #define AZX_ML_HDA_LCAP_LSS BIT(23) /* only used if ALT == 1 */
271 #define AZX_ML_HDA_LCAP_SLCOUNT GENMASK(22, 20) /* only used if ALT == 1 */
272
273 #define AZX_REG_ML_LCTL 0x04
274 #define AZX_ML_LCTL_INTSTS BIT(31) /* only used if ALT == 1 */
275 #define AZX_ML_LCTL_CPA BIT(23)
276 #define AZX_ML_LCTL_CPA_SHIFT 23
277 #define AZX_ML_LCTL_SPA BIT(16)
278 #define AZX_ML_LCTL_SPA_SHIFT 16
279 #define AZX_ML_LCTL_INTEN BIT(5) /* only used if ALT == 1 */
280 #define AZX_ML_LCTL_OFLEN BIT(4) /* only used if ALT == 1 */
281 #define AZX_ML_LCTL_SCF GENMASK(3, 0) /* only used if ALT == 0 */
282
283 #define AZX_REG_ML_LOSIDV 0x08
284
285 /* bit0 is reserved, with BIT(1) mapping to stream1 */
286 #define AZX_ML_LOSIDV_STREAM_MASK 0xFFFE
287
288 #define AZX_REG_ML_LSDIID 0x0C
289 #define AZX_REG_ML_LSDIID_OFFSET(x) (0x0C + (x) * 0x02) /* only used if ALT == 1 */
290
291 /* HDaudio registers only valid if LCAP.ALT == 0 */
292 #define AZX_REG_ML_LPSOO 0x10
293 #define AZX_REG_ML_LPSIO 0x12
294 #define AZX_REG_ML_LWALFC 0x18
295 #define AZX_REG_ML_LOUTPAY 0x20
296 #define AZX_REG_ML_LINPAY 0x30
297
298 /* HDaudio Extended link registers only valid if LCAP.ALT == 1 */
299 #define AZX_REG_ML_LSYNC 0x1C
300
301 #define AZX_REG_ML_LSYNC_CMDSYNC BIT(24)
302 #define AZX_REG_ML_LSYNC_CMDSYNC_SHIFT 24
303 #define AZX_REG_ML_LSYNC_SYNCGO BIT(23)
304 #define AZX_REG_ML_LSYNC_SYNCPU BIT(20)
305 #define AZX_REG_ML_LSYNC_SYNCPRD GENMASK(19, 0)
306
307 #define AZX_REG_ML_LEPTR 0x20
308
309 #define AZX_REG_ML_LEPTR_ID GENMASK(31, 24)
310 #define AZX_REG_ML_LEPTR_ID_SHIFT 24
311 #define AZX_REG_ML_LEPTR_ID_SDW 0x00
312 #define AZX_REG_ML_LEPTR_ID_INTEL_SSP 0xC0
313 #define AZX_REG_ML_LEPTR_ID_INTEL_DMIC 0xC1
314 #define AZX_REG_ML_LEPTR_ID_INTEL_UAOL 0xC2
315 #define AZX_REG_ML_LEPTR_VER GENMASK(23, 20)
316 #define AZX_REG_ML_LEPTR_PTR GENMASK(19, 0)
317
318 /* registers for DMA Resume Capability Structure */
319 #define AZX_DRSM_CAP_ID 0x5
320 #define AZX_REG_DRSM_CTL 0x4
321 /* Base used to calculate the iterating register offset */
322 #define AZX_DRSM_BASE 0x08
323 /* Interval used to calculate the iterating register offset */
324 #define AZX_DRSM_INTERVAL 0x08
325
326 /* Global time synchronization registers */
327 #define GTSCC_TSCCD_MASK 0x80000000
328 #define GTSCC_TSCCD_SHIFT BIT(31)
329 #define GTSCC_TSCCI_MASK 0x20
330 #define GTSCC_CDMAS_DMA_DIR_SHIFT 4
331
332 #define WALFCC_CIF_MASK 0x1FF
333 #define WALFCC_FN_SHIFT 9
334 #define HDA_CLK_CYCLES_PER_FRAME 512
335
336 /*
337 * An error occurs near frame "rollover". The clocks in frame value indicates
338 * whether this error may have occurred. Here we use the value of 10. Please
339 * see the errata for the right number [<10]
340 */
341 #define HDA_MAX_CYCLE_VALUE 499
342 #define HDA_MAX_CYCLE_OFFSET 10
343 #define HDA_MAX_CYCLE_READ_RETRY 10
344
345 #define TSCCU_CCU_SHIFT 32
346 #define LLPC_CCU_SHIFT 32
347
348
349 /*
350 * helpers to read the stream position
351 */
352 static inline unsigned int
snd_hdac_stream_get_pos_lpib(struct hdac_stream * stream)353 snd_hdac_stream_get_pos_lpib(struct hdac_stream *stream)
354 {
355 return snd_hdac_stream_readl(stream, SD_LPIB);
356 }
357
358 static inline unsigned int
snd_hdac_stream_get_pos_posbuf(struct hdac_stream * stream)359 snd_hdac_stream_get_pos_posbuf(struct hdac_stream *stream)
360 {
361 return le32_to_cpu(*stream->posbuf);
362 }
363
364 #endif /* __SOUND_HDA_REGISTER_H */
365