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8d318a50 LW |
1 | /* |
2 | * driver/dma/ste_dma40_ll.h | |
3 | * | |
4 | * Copyright (C) ST-Ericsson 2007-2010 | |
5 | * License terms: GNU General Public License (GPL) version 2 | |
6 | * Author: Per Friden <per.friden@stericsson.com> | |
7 | * Author: Jonas Aaberg <jonas.aberg@stericsson.com> | |
8 | */ | |
9 | #ifndef STE_DMA40_LL_H | |
10 | #define STE_DMA40_LL_H | |
11 | ||
12 | #define D40_DREG_PCBASE 0x400 | |
13 | #define D40_DREG_PCDELTA (8 * 4) | |
14 | #define D40_LLI_ALIGN 16 /* LLI alignment must be 16 bytes. */ | |
15 | ||
ef1872ec LW |
16 | #define D40_LCPA_CHAN_SIZE 32 |
17 | #define D40_LCPA_CHAN_DST_DELTA 16 | |
18 | ||
8d318a50 LW |
19 | #define D40_TYPE_TO_GROUP(type) (type / 16) |
20 | #define D40_TYPE_TO_EVENT(type) (type % 16) | |
21 | ||
22 | /* Most bits of the CFG register are the same in log as in phy mode */ | |
23 | #define D40_SREG_CFG_MST_POS 15 | |
24 | #define D40_SREG_CFG_TIM_POS 14 | |
25 | #define D40_SREG_CFG_EIM_POS 13 | |
26 | #define D40_SREG_CFG_LOG_INCR_POS 12 | |
27 | #define D40_SREG_CFG_PHY_PEN_POS 12 | |
28 | #define D40_SREG_CFG_PSIZE_POS 10 | |
29 | #define D40_SREG_CFG_ESIZE_POS 8 | |
30 | #define D40_SREG_CFG_PRI_POS 7 | |
31 | #define D40_SREG_CFG_LBE_POS 6 | |
32 | #define D40_SREG_CFG_LOG_GIM_POS 5 | |
33 | #define D40_SREG_CFG_LOG_MFU_POS 4 | |
34 | #define D40_SREG_CFG_PHY_TM_POS 4 | |
35 | #define D40_SREG_CFG_PHY_EVTL_POS 0 | |
36 | ||
37 | ||
38 | /* Standard channel parameters - basic mode (element register) */ | |
39 | #define D40_SREG_ELEM_PHY_ECNT_POS 16 | |
40 | #define D40_SREG_ELEM_PHY_EIDX_POS 0 | |
41 | ||
42 | #define D40_SREG_ELEM_PHY_ECNT_MASK (0xFFFF << D40_SREG_ELEM_PHY_ECNT_POS) | |
43 | ||
44 | /* Standard channel parameters - basic mode (Link register) */ | |
45 | #define D40_SREG_LNK_PHY_TCP_POS 0 | |
46 | #define D40_SREG_LNK_PHY_LMP_POS 1 | |
47 | #define D40_SREG_LNK_PHY_PRE_POS 2 | |
48 | /* | |
49 | * Source destination link address. Contains the | |
50 | * 29-bit byte word aligned address of the reload area. | |
51 | */ | |
52 | #define D40_SREG_LNK_PHYS_LNK_MASK 0xFFFFFFF8UL | |
53 | ||
54 | /* Standard basic channel logical mode */ | |
55 | ||
56 | /* Element register */ | |
57 | #define D40_SREG_ELEM_LOG_ECNT_POS 16 | |
58 | #define D40_SREG_ELEM_LOG_LIDX_POS 8 | |
59 | #define D40_SREG_ELEM_LOG_LOS_POS 1 | |
60 | #define D40_SREG_ELEM_LOG_TCP_POS 0 | |
61 | ||
62 | #define D40_SREG_ELEM_LOG_LIDX_MASK (0xFF << D40_SREG_ELEM_LOG_LIDX_POS) | |
63 | ||
64 | /* Link register */ | |
65 | #define D40_DEACTIVATE_EVENTLINE 0x0 | |
66 | #define D40_ACTIVATE_EVENTLINE 0x1 | |
67 | #define D40_EVENTLINE_POS(i) (2 * i) | |
68 | #define D40_EVENTLINE_MASK(i) (0x3 << D40_EVENTLINE_POS(i)) | |
69 | ||
70 | /* Standard basic channel logical params in memory */ | |
71 | ||
72 | /* LCSP0 */ | |
73 | #define D40_MEM_LCSP0_ECNT_POS 16 | |
74 | #define D40_MEM_LCSP0_SPTR_POS 0 | |
75 | ||
76 | #define D40_MEM_LCSP0_ECNT_MASK (0xFFFF << D40_MEM_LCSP0_ECNT_POS) | |
77 | #define D40_MEM_LCSP0_SPTR_MASK (0xFFFF << D40_MEM_LCSP0_SPTR_POS) | |
78 | ||
79 | /* LCSP1 */ | |
80 | #define D40_MEM_LCSP1_SPTR_POS 16 | |
81 | #define D40_MEM_LCSP1_SCFG_MST_POS 15 | |
82 | #define D40_MEM_LCSP1_SCFG_TIM_POS 14 | |
83 | #define D40_MEM_LCSP1_SCFG_EIM_POS 13 | |
84 | #define D40_MEM_LCSP1_SCFG_INCR_POS 12 | |
85 | #define D40_MEM_LCSP1_SCFG_PSIZE_POS 10 | |
86 | #define D40_MEM_LCSP1_SCFG_ESIZE_POS 8 | |
87 | #define D40_MEM_LCSP1_SLOS_POS 1 | |
88 | #define D40_MEM_LCSP1_STCP_POS 0 | |
89 | ||
90 | #define D40_MEM_LCSP1_SPTR_MASK (0xFFFF << D40_MEM_LCSP1_SPTR_POS) | |
91 | #define D40_MEM_LCSP1_SCFG_TIM_MASK (0x1 << D40_MEM_LCSP1_SCFG_TIM_POS) | |
92 | #define D40_MEM_LCSP1_SCFG_INCR_MASK (0x1 << D40_MEM_LCSP1_SCFG_INCR_POS) | |
93 | #define D40_MEM_LCSP1_SCFG_PSIZE_MASK (0x3 << D40_MEM_LCSP1_SCFG_PSIZE_POS) | |
94 | #define D40_MEM_LCSP1_SLOS_MASK (0x7F << D40_MEM_LCSP1_SLOS_POS) | |
95 | #define D40_MEM_LCSP1_STCP_MASK (0x1 << D40_MEM_LCSP1_STCP_POS) | |
96 | ||
97 | /* LCSP2 */ | |
98 | #define D40_MEM_LCSP2_ECNT_POS 16 | |
99 | ||
100 | #define D40_MEM_LCSP2_ECNT_MASK (0xFFFF << D40_MEM_LCSP2_ECNT_POS) | |
101 | ||
102 | /* LCSP3 */ | |
103 | #define D40_MEM_LCSP3_DCFG_MST_POS 15 | |
104 | #define D40_MEM_LCSP3_DCFG_TIM_POS 14 | |
105 | #define D40_MEM_LCSP3_DCFG_EIM_POS 13 | |
106 | #define D40_MEM_LCSP3_DCFG_INCR_POS 12 | |
107 | #define D40_MEM_LCSP3_DCFG_PSIZE_POS 10 | |
108 | #define D40_MEM_LCSP3_DCFG_ESIZE_POS 8 | |
109 | #define D40_MEM_LCSP3_DLOS_POS 1 | |
110 | #define D40_MEM_LCSP3_DTCP_POS 0 | |
111 | ||
112 | #define D40_MEM_LCSP3_DLOS_MASK (0x7F << D40_MEM_LCSP3_DLOS_POS) | |
113 | #define D40_MEM_LCSP3_DTCP_MASK (0x1 << D40_MEM_LCSP3_DTCP_POS) | |
114 | ||
115 | ||
116 | /* Standard channel parameter register offsets */ | |
117 | #define D40_CHAN_REG_SSCFG 0x00 | |
118 | #define D40_CHAN_REG_SSELT 0x04 | |
119 | #define D40_CHAN_REG_SSPTR 0x08 | |
120 | #define D40_CHAN_REG_SSLNK 0x0C | |
121 | #define D40_CHAN_REG_SDCFG 0x10 | |
122 | #define D40_CHAN_REG_SDELT 0x14 | |
123 | #define D40_CHAN_REG_SDPTR 0x18 | |
124 | #define D40_CHAN_REG_SDLNK 0x1C | |
125 | ||
126 | /* DMA Register Offsets */ | |
127 | #define D40_DREG_GCC 0x000 | |
128 | #define D40_DREG_PRTYP 0x004 | |
129 | #define D40_DREG_PRSME 0x008 | |
130 | #define D40_DREG_PRSMO 0x00C | |
131 | #define D40_DREG_PRMSE 0x010 | |
132 | #define D40_DREG_PRMSO 0x014 | |
133 | #define D40_DREG_PRMOE 0x018 | |
134 | #define D40_DREG_PRMOO 0x01C | |
135 | #define D40_DREG_LCPA 0x020 | |
136 | #define D40_DREG_LCLA 0x024 | |
137 | #define D40_DREG_ACTIVE 0x050 | |
138 | #define D40_DREG_ACTIVO 0x054 | |
139 | #define D40_DREG_FSEB1 0x058 | |
140 | #define D40_DREG_FSEB2 0x05C | |
141 | #define D40_DREG_PCMIS 0x060 | |
142 | #define D40_DREG_PCICR 0x064 | |
143 | #define D40_DREG_PCTIS 0x068 | |
144 | #define D40_DREG_PCEIS 0x06C | |
145 | #define D40_DREG_LCMIS0 0x080 | |
146 | #define D40_DREG_LCMIS1 0x084 | |
147 | #define D40_DREG_LCMIS2 0x088 | |
148 | #define D40_DREG_LCMIS3 0x08C | |
149 | #define D40_DREG_LCICR0 0x090 | |
150 | #define D40_DREG_LCICR1 0x094 | |
151 | #define D40_DREG_LCICR2 0x098 | |
152 | #define D40_DREG_LCICR3 0x09C | |
153 | #define D40_DREG_LCTIS0 0x0A0 | |
154 | #define D40_DREG_LCTIS1 0x0A4 | |
155 | #define D40_DREG_LCTIS2 0x0A8 | |
156 | #define D40_DREG_LCTIS3 0x0AC | |
157 | #define D40_DREG_LCEIS0 0x0B0 | |
158 | #define D40_DREG_LCEIS1 0x0B4 | |
159 | #define D40_DREG_LCEIS2 0x0B8 | |
160 | #define D40_DREG_LCEIS3 0x0BC | |
161 | #define D40_DREG_STFU 0xFC8 | |
162 | #define D40_DREG_ICFG 0xFCC | |
163 | #define D40_DREG_PERIPHID0 0xFE0 | |
164 | #define D40_DREG_PERIPHID1 0xFE4 | |
165 | #define D40_DREG_PERIPHID2 0xFE8 | |
166 | #define D40_DREG_PERIPHID3 0xFEC | |
167 | #define D40_DREG_CELLID0 0xFF0 | |
168 | #define D40_DREG_CELLID1 0xFF4 | |
169 | #define D40_DREG_CELLID2 0xFF8 | |
170 | #define D40_DREG_CELLID3 0xFFC | |
171 | ||
172 | /* LLI related structures */ | |
173 | ||
174 | /** | |
175 | * struct d40_phy_lli - The basic configration register for each physical | |
176 | * channel. | |
177 | * | |
178 | * @reg_cfg: The configuration register. | |
179 | * @reg_elt: The element register. | |
180 | * @reg_ptr: The pointer register. | |
181 | * @reg_lnk: The link register. | |
182 | * | |
183 | * These registers are set up for both physical and logical transfers | |
184 | * Note that the bit in each register means differently in logical and | |
185 | * physical(standard) mode. | |
186 | * | |
187 | * This struct must be 16 bytes aligned, and only contain physical registers | |
188 | * since it will be directly accessed by the DMA. | |
189 | */ | |
190 | struct d40_phy_lli { | |
191 | u32 reg_cfg; | |
192 | u32 reg_elt; | |
193 | u32 reg_ptr; | |
194 | u32 reg_lnk; | |
195 | }; | |
196 | ||
197 | /** | |
198 | * struct d40_phy_lli_bidir - struct for a transfer. | |
199 | * | |
200 | * @src: Register settings for src channel. | |
201 | * @dst: Register settings for dst channel. | |
202 | * @dst_addr: Physical destination address. | |
203 | * @src_addr: Physical source address. | |
204 | * | |
205 | * All DMA transfers have a source and a destination. | |
206 | */ | |
207 | ||
208 | struct d40_phy_lli_bidir { | |
209 | struct d40_phy_lli *src; | |
210 | struct d40_phy_lli *dst; | |
211 | dma_addr_t dst_addr; | |
212 | dma_addr_t src_addr; | |
213 | }; | |
214 | ||
215 | ||
216 | /** | |
217 | * struct d40_log_lli - logical lli configuration | |
218 | * | |
219 | * @lcsp02: Either maps to register lcsp0 if src or lcsp2 if dst. | |
220 | * @lcsp13: Either maps to register lcsp1 if src or lcsp3 if dst. | |
221 | * | |
222 | * This struct must be 8 bytes aligned since it will be accessed directy by | |
223 | * the DMA. Never add any none hw mapped registers to this struct. | |
224 | */ | |
225 | ||
226 | struct d40_log_lli { | |
227 | u32 lcsp02; | |
228 | u32 lcsp13; | |
229 | }; | |
230 | ||
231 | /** | |
232 | * struct d40_log_lli_bidir - For both src and dst | |
233 | * | |
234 | * @src: pointer to src lli configuration. | |
235 | * @dst: pointer to dst lli configuration. | |
236 | * | |
237 | * You always have a src and a dst when doing DMA transfers. | |
238 | */ | |
239 | ||
240 | struct d40_log_lli_bidir { | |
241 | struct d40_log_lli *src; | |
242 | struct d40_log_lli *dst; | |
243 | }; | |
244 | ||
245 | /** | |
246 | * struct d40_log_lli_full - LCPA layout | |
247 | * | |
248 | * @lcsp0: Logical Channel Standard Param 0 - Src. | |
249 | * @lcsp1: Logical Channel Standard Param 1 - Src. | |
250 | * @lcsp2: Logical Channel Standard Param 2 - Dst. | |
251 | * @lcsp3: Logical Channel Standard Param 3 - Dst. | |
252 | * | |
253 | * This struct maps to LCPA physical memory layout. Must map to | |
254 | * the hw. | |
255 | */ | |
256 | struct d40_log_lli_full { | |
257 | u32 lcsp0; | |
258 | u32 lcsp1; | |
259 | u32 lcsp2; | |
260 | u32 lcsp3; | |
261 | }; | |
262 | ||
263 | /** | |
264 | * struct d40_def_lcsp - Default LCSP1 and LCSP3 settings | |
265 | * | |
266 | * @lcsp3: The default configuration for dst. | |
267 | * @lcsp1: The default configuration for src. | |
268 | */ | |
269 | struct d40_def_lcsp { | |
270 | u32 lcsp3; | |
271 | u32 lcsp1; | |
272 | }; | |
273 | ||
274 | /** | |
275 | * struct d40_lcla_elem - Info for one LCA element. | |
276 | * | |
277 | * @src_id: logical channel src id | |
278 | * @dst_id: logical channel dst id | |
279 | * @src: LCPA formated src parameters | |
280 | * @dst: LCPA formated dst parameters | |
281 | * | |
282 | */ | |
283 | struct d40_lcla_elem { | |
284 | int src_id; | |
285 | int dst_id; | |
286 | struct d40_log_lli *src; | |
287 | struct d40_log_lli *dst; | |
288 | }; | |
289 | ||
290 | /* Physical channels */ | |
291 | ||
292 | void d40_phy_cfg(struct stedma40_chan_cfg *cfg, | |
293 | u32 *src_cfg, u32 *dst_cfg, bool is_log); | |
294 | ||
295 | void d40_log_cfg(struct stedma40_chan_cfg *cfg, | |
296 | u32 *lcsp1, u32 *lcsp2); | |
297 | ||
298 | int d40_phy_sg_to_lli(struct scatterlist *sg, | |
299 | int sg_len, | |
300 | dma_addr_t target, | |
301 | struct d40_phy_lli *lli, | |
302 | dma_addr_t lli_phys, | |
303 | u32 reg_cfg, | |
304 | u32 data_width, | |
0246e77b | 305 | int psize); |
8d318a50 LW |
306 | |
307 | int d40_phy_fill_lli(struct d40_phy_lli *lli, | |
308 | dma_addr_t data, | |
309 | u32 data_size, | |
310 | int psize, | |
311 | dma_addr_t next_lli, | |
312 | u32 reg_cfg, | |
313 | bool term_int, | |
314 | u32 data_width, | |
315 | bool is_device); | |
316 | ||
317 | void d40_phy_lli_write(void __iomem *virtbase, | |
318 | u32 phy_chan_num, | |
319 | struct d40_phy_lli *lli_dst, | |
320 | struct d40_phy_lli *lli_src); | |
321 | ||
322 | /* Logical channels */ | |
323 | ||
324 | void d40_log_fill_lli(struct d40_log_lli *lli, | |
325 | dma_addr_t data, u32 data_size, | |
326 | u32 lli_next_off, u32 reg_cfg, | |
327 | u32 data_width, | |
328 | bool term_int, bool addr_inc); | |
329 | ||
330 | int d40_log_sg_to_dev(struct d40_lcla_elem *lcla, | |
331 | struct scatterlist *sg, | |
332 | int sg_len, | |
333 | struct d40_log_lli_bidir *lli, | |
334 | struct d40_def_lcsp *lcsp, | |
335 | u32 src_data_width, | |
336 | u32 dst_data_width, | |
337 | enum dma_data_direction direction, | |
0246e77b | 338 | dma_addr_t dev_addr, int max_len, |
8d318a50 LW |
339 | int llis_per_log); |
340 | ||
508849ad LW |
341 | int d40_log_lli_write(struct d40_log_lli_full *lcpa, |
342 | struct d40_log_lli *lcla_src, | |
343 | struct d40_log_lli *lcla_dst, | |
344 | struct d40_log_lli *lli_dst, | |
345 | struct d40_log_lli *lli_src, | |
346 | int llis_per_log); | |
8d318a50 LW |
347 | |
348 | int d40_log_sg_to_lli(int lcla_id, | |
349 | struct scatterlist *sg, | |
350 | int sg_len, | |
351 | struct d40_log_lli *lli_sg, | |
352 | u32 lcsp13, /* src or dst*/ | |
353 | u32 data_width, | |
0246e77b | 354 | int max_len, int llis_per_log); |
8d318a50 LW |
355 | |
356 | #endif /* STE_DMA40_LLI_H */ |