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b2441318 1/* SPDX-License-Identifier: GPL-2.0 */
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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 */
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32#define AZX_REG_GCAP2 0x12
33#define AZX_REG_LLCH 0x14
34#define AZX_REG_OUTSTRMPAY 0x18
35#define AZX_REG_INSTRMPAY 0x1A
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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 */
78enum { 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_STS 0x03
83#define AZX_REG_SD_LPIB 0x04
84#define AZX_REG_SD_CBL 0x08
85#define AZX_REG_SD_LVI 0x0c
86#define AZX_REG_SD_FIFOW 0x0e
87#define AZX_REG_SD_FIFOSIZE 0x10
88#define AZX_REG_SD_FORMAT 0x12
83b0b677 89#define AZX_REG_SD_FIFOL 0x14
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90#define AZX_REG_SD_BDLPL 0x18
91#define AZX_REG_SD_BDLPU 0x1c
92
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93/* GTS registers */
94#define AZX_REG_LLCH 0x14
95
96#define AZX_REG_GTS_BASE 0x520
97
98#define AZX_REG_GTSCC (AZX_REG_GTS_BASE + 0x00)
99#define AZX_REG_WALFCC (AZX_REG_GTS_BASE + 0x04)
100#define AZX_REG_TSCCL (AZX_REG_GTS_BASE + 0x08)
101#define AZX_REG_TSCCU (AZX_REG_GTS_BASE + 0x0C)
102#define AZX_REG_LLPFOC (AZX_REG_GTS_BASE + 0x14)
103#define AZX_REG_LLPCL (AZX_REG_GTS_BASE + 0x18)
104#define AZX_REG_LLPCU (AZX_REG_GTS_BASE + 0x1C)
105
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106/* Haswell/Broadwell display HD-A controller Extended Mode registers */
107#define AZX_REG_HSW_EM4 0x100c
108#define AZX_REG_HSW_EM5 0x1010
109
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110/* Skylake/Broxton vendor-specific registers */
111#define AZX_REG_VS_EM1 0x1000
112#define AZX_REG_VS_INRC 0x1004
113#define AZX_REG_VS_OUTRC 0x1008
114#define AZX_REG_VS_FIFOTRK 0x100C
115#define AZX_REG_VS_FIFOTRK2 0x1010
116#define AZX_REG_VS_EM2 0x1030
117#define AZX_REG_VS_EM3L 0x1038
118#define AZX_REG_VS_EM3U 0x103C
119#define AZX_REG_VS_EM4L 0x1040
120#define AZX_REG_VS_EM4U 0x1044
121#define AZX_REG_VS_LTRC 0x1048
122#define AZX_REG_VS_D0I3C 0x104A
123#define AZX_REG_VS_PCE 0x104B
124#define AZX_REG_VS_L2MAGC 0x1050
125#define AZX_REG_VS_L2LAHPT 0x1054
126#define AZX_REG_VS_SDXDPIB_XBASE 0x1084
127#define AZX_REG_VS_SDXDPIB_XINTERVAL 0x20
128#define AZX_REG_VS_SDXEFIFOS_XBASE 0x1094
129#define AZX_REG_VS_SDXEFIFOS_XINTERVAL 0x20
7c23b7c1 130
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131/* PCI space */
132#define AZX_PCIREG_TCSEL 0x44
133
134/*
135 * other constants
136 */
137
138/* max number of fragments - we may use more if allocating more pages for BDL */
139#define BDL_SIZE 4096
140#define AZX_MAX_BDL_ENTRIES (BDL_SIZE / 16)
141#define AZX_MAX_FRAG 32
142/* max buffer size - no h/w limit, you can increase as you like */
143#define AZX_MAX_BUF_SIZE (1024*1024*1024)
144
145/* RIRB int mask: overrun[2], response[0] */
146#define RIRB_INT_RESPONSE 0x01
147#define RIRB_INT_OVERRUN 0x04
148#define RIRB_INT_MASK 0x05
149
150/* STATESTS int mask: S3,SD2,SD1,SD0 */
151#define STATESTS_INT_MASK ((1 << HDA_MAX_CODECS) - 1)
152
153/* SD_CTL bits */
154#define SD_CTL_STREAM_RESET 0x01 /* stream reset bit */
155#define SD_CTL_DMA_START 0x02 /* stream DMA start bit */
156#define SD_CTL_STRIPE (3 << 16) /* stripe control */
157#define SD_CTL_TRAFFIC_PRIO (1 << 18) /* traffic priority */
158#define SD_CTL_DIR (1 << 19) /* bi-directional stream */
159#define SD_CTL_STREAM_TAG_MASK (0xf << 20)
160#define SD_CTL_STREAM_TAG_SHIFT 20
161
162/* SD_CTL and SD_STS */
163#define SD_INT_DESC_ERR 0x10 /* descriptor error interrupt */
164#define SD_INT_FIFO_ERR 0x08 /* FIFO error interrupt */
165#define SD_INT_COMPLETE 0x04 /* completion interrupt */
166#define SD_INT_MASK (SD_INT_DESC_ERR|SD_INT_FIFO_ERR|\
167 SD_INT_COMPLETE)
168
169/* SD_STS */
170#define SD_STS_FIFO_READY 0x20 /* FIFO ready */
171
172/* INTCTL and INTSTS */
173#define AZX_INT_ALL_STREAM 0xff /* all stream interrupts */
174#define AZX_INT_CTRL_EN 0x40000000 /* controller interrupt enable bit */
175#define AZX_INT_GLOBAL_EN 0x80000000 /* global interrupt enable bit */
176
177/* below are so far hardcoded - should read registers in future */
178#define AZX_MAX_CORB_ENTRIES 256
179#define AZX_MAX_RIRB_ENTRIES 256
180
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181/* Capability header Structure */
182#define AZX_REG_CAP_HDR 0x0
183#define AZX_CAP_HDR_VER_OFF 28
184#define AZX_CAP_HDR_VER_MASK (0xF << AZX_CAP_HDR_VER_OFF)
185#define AZX_CAP_HDR_ID_OFF 16
186#define AZX_CAP_HDR_ID_MASK (0xFFF << AZX_CAP_HDR_ID_OFF)
187#define AZX_CAP_HDR_NXT_PTR_MASK 0xFFFF
188
189/* registers of Software Position Based FIFO Capability Structure */
190#define AZX_SPB_CAP_ID 0x4
191#define AZX_REG_SPB_BASE_ADDR 0x700
192#define AZX_REG_SPB_SPBFCH 0x00
193#define AZX_REG_SPB_SPBFCCTL 0x04
194/* Base used to calculate the iterating register offset */
195#define AZX_SPB_BASE 0x08
196/* Interval used to calculate the iterating register offset */
197#define AZX_SPB_INTERVAL 0x08
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198/* SPIB base */
199#define AZX_SPB_SPIB 0x00
200/* SPIB MAXFIFO base*/
201#define AZX_SPB_MAXFIFO 0x04
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202
203/* registers of Global Time Synchronization Capability Structure */
204#define AZX_GTS_CAP_ID 0x1
205#define AZX_REG_GTS_GTSCH 0x00
206#define AZX_REG_GTS_GTSCD 0x04
207#define AZX_REG_GTS_GTSCTLAC 0x0C
208#define AZX_GTS_BASE 0x20
209#define AZX_GTS_INTERVAL 0x20
210
211/* registers for Processing Pipe Capability Structure */
212#define AZX_PP_CAP_ID 0x3
213#define AZX_REG_PP_PPCH 0x10
214#define AZX_REG_PP_PPCTL 0x04
215#define AZX_PPCTL_PIE (1<<31)
216#define AZX_PPCTL_GPROCEN (1<<30)
217/* _X_ = dma engine # and cannot * exceed 29 (per spec max 30 dma engines) */
218#define AZX_PPCTL_PROCEN(_X_) (1<<(_X_))
219
220#define AZX_REG_PP_PPSTS 0x08
221
222#define AZX_PPHC_BASE 0x10
223#define AZX_PPHC_INTERVAL 0x10
224
225#define AZX_REG_PPHCLLPL 0x0
226#define AZX_REG_PPHCLLPU 0x4
227#define AZX_REG_PPHCLDPL 0x8
228#define AZX_REG_PPHCLDPU 0xC
229
230#define AZX_PPLC_BASE 0x10
231#define AZX_PPLC_MULTI 0x10
232#define AZX_PPLC_INTERVAL 0x10
233
234#define AZX_REG_PPLCCTL 0x0
235#define AZX_PPLCCTL_STRM_BITS 4
236#define AZX_PPLCCTL_STRM_SHIFT 20
237#define AZX_REG_MASK(bit_num, offset) \
238 (((1 << (bit_num)) - 1) << (offset))
239#define AZX_PPLCCTL_STRM_MASK \
240 AZX_REG_MASK(AZX_PPLCCTL_STRM_BITS, AZX_PPLCCTL_STRM_SHIFT)
241#define AZX_PPLCCTL_RUN (1<<1)
242#define AZX_PPLCCTL_STRST (1<<0)
243
244#define AZX_REG_PPLCFMT 0x4
245#define AZX_REG_PPLCLLPL 0x8
246#define AZX_REG_PPLCLLPU 0xC
247
248/* registers for Multiple Links Capability Structure */
249#define AZX_ML_CAP_ID 0x2
250#define AZX_REG_ML_MLCH 0x00
251#define AZX_REG_ML_MLCD 0x04
252#define AZX_ML_BASE 0x40
253#define AZX_ML_INTERVAL 0x40
254
255#define AZX_REG_ML_LCAP 0x00
256#define AZX_REG_ML_LCTL 0x04
257#define AZX_REG_ML_LOSIDV 0x08
258#define AZX_REG_ML_LSDIID 0x0C
259#define AZX_REG_ML_LPSOO 0x10
260#define AZX_REG_ML_LPSIO 0x12
261#define AZX_REG_ML_LWALFC 0x18
262#define AZX_REG_ML_LOUTPAY 0x20
263#define AZX_REG_ML_LINPAY 0x30
264
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265#define ML_LCTL_SCF_MASK 0xF
266#define AZX_MLCTL_SPA (0x1 << 16)
267#define AZX_MLCTL_CPA (0x1 << 23)
268#define AZX_MLCTL_SPA_SHIFT 16
269#define AZX_MLCTL_CPA_SHIFT 23
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270
271/* registers for DMA Resume Capability Structure */
272#define AZX_DRSM_CAP_ID 0x5
273#define AZX_REG_DRSM_CTL 0x4
274/* Base used to calculate the iterating register offset */
275#define AZX_DRSM_BASE 0x08
276/* Interval used to calculate the iterating register offset */
277#define AZX_DRSM_INTERVAL 0x08
278
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279/* Global time synchronization registers */
280#define GTSCC_TSCCD_MASK 0x80000000
281#define GTSCC_TSCCD_SHIFT BIT(31)
282#define GTSCC_TSCCI_MASK 0x20
283#define GTSCC_CDMAS_DMA_DIR_SHIFT 4
284
285#define WALFCC_CIF_MASK 0x1FF
286#define WALFCC_FN_SHIFT 9
287#define HDA_CLK_CYCLES_PER_FRAME 512
288
289/*
290 * An error occurs near frame "rollover". The clocks in frame value indicates
291 * whether this error may have occurred. Here we use the value of 10. Please
292 * see the errata for the right number [<10]
293 */
294#define HDA_MAX_CYCLE_VALUE 499
295#define HDA_MAX_CYCLE_OFFSET 10
296#define HDA_MAX_CYCLE_READ_RETRY 10
297
298#define TSCCU_CCU_SHIFT 32
299#define LLPC_CCU_SHIFT 32
300
301
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302/*
303 * helpers to read the stream position
304 */
305static inline unsigned int
306snd_hdac_stream_get_pos_lpib(struct hdac_stream *stream)
307{
308 return snd_hdac_stream_readl(stream, SD_LPIB);
309}
310
311static inline unsigned int
312snd_hdac_stream_get_pos_posbuf(struct hdac_stream *stream)
313{
314 return le32_to_cpu(*stream->posbuf);
315}
316
317#endif /* __SOUND_HDA_REGISTER_H */