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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
7bedaa55 RK |
2 | #ifndef __LINUX_OMAP_DMA_H |
3 | #define __LINUX_OMAP_DMA_H | |
45c3eb7d TL |
4 | /* |
5 | * Legacy OMAP DMA handling defines and functions | |
6 | * | |
7 | * NOTE: Do not use these any longer. | |
8 | * | |
9 | * Use the generic dmaengine functions as defined in | |
10 | * include/linux/dmaengine.h. | |
11 | * | |
12 | * Copyright (C) 2003 Nokia Corporation | |
13 | * Author: Juha Yrjölä <juha.yrjola@nokia.com> | |
14 | * | |
15 | */ | |
16 | ||
17 | #include <linux/platform_device.h> | |
18 | ||
1bd5dfe4 | 19 | #define INT_DMA_LCD (NR_IRQS_LEGACY + 25) |
45c3eb7d TL |
20 | |
21 | #define OMAP1_DMA_TOUT_IRQ (1 << 0) | |
22 | #define OMAP_DMA_DROP_IRQ (1 << 1) | |
23 | #define OMAP_DMA_HALF_IRQ (1 << 2) | |
24 | #define OMAP_DMA_FRAME_IRQ (1 << 3) | |
25 | #define OMAP_DMA_LAST_IRQ (1 << 4) | |
26 | #define OMAP_DMA_BLOCK_IRQ (1 << 5) | |
27 | #define OMAP1_DMA_SYNC_IRQ (1 << 6) | |
28 | #define OMAP2_DMA_PKT_IRQ (1 << 7) | |
29 | #define OMAP2_DMA_TRANS_ERR_IRQ (1 << 8) | |
30 | #define OMAP2_DMA_SECURE_ERR_IRQ (1 << 9) | |
31 | #define OMAP2_DMA_SUPERVISOR_ERR_IRQ (1 << 10) | |
32 | #define OMAP2_DMA_MISALIGNED_ERR_IRQ (1 << 11) | |
33 | ||
34 | #define OMAP_DMA_CCR_EN (1 << 7) | |
35 | #define OMAP_DMA_CCR_RD_ACTIVE (1 << 9) | |
36 | #define OMAP_DMA_CCR_WR_ACTIVE (1 << 10) | |
37 | #define OMAP_DMA_CCR_SEL_SRC_DST_SYNC (1 << 24) | |
38 | #define OMAP_DMA_CCR_BUFFERING_DISABLE (1 << 25) | |
39 | ||
40 | #define OMAP_DMA_DATA_TYPE_S8 0x00 | |
41 | #define OMAP_DMA_DATA_TYPE_S16 0x01 | |
42 | #define OMAP_DMA_DATA_TYPE_S32 0x02 | |
43 | ||
44 | #define OMAP_DMA_SYNC_ELEMENT 0x00 | |
45 | #define OMAP_DMA_SYNC_FRAME 0x01 | |
46 | #define OMAP_DMA_SYNC_BLOCK 0x02 | |
47 | #define OMAP_DMA_SYNC_PACKET 0x03 | |
48 | ||
49 | #define OMAP_DMA_DST_SYNC_PREFETCH 0x02 | |
50 | #define OMAP_DMA_SRC_SYNC 0x01 | |
51 | #define OMAP_DMA_DST_SYNC 0x00 | |
52 | ||
53 | #define OMAP_DMA_PORT_EMIFF 0x00 | |
54 | #define OMAP_DMA_PORT_EMIFS 0x01 | |
55 | #define OMAP_DMA_PORT_OCP_T1 0x02 | |
56 | #define OMAP_DMA_PORT_TIPB 0x03 | |
57 | #define OMAP_DMA_PORT_OCP_T2 0x04 | |
58 | #define OMAP_DMA_PORT_MPUI 0x05 | |
59 | ||
60 | #define OMAP_DMA_AMODE_CONSTANT 0x00 | |
61 | #define OMAP_DMA_AMODE_POST_INC 0x01 | |
62 | #define OMAP_DMA_AMODE_SINGLE_IDX 0x02 | |
63 | #define OMAP_DMA_AMODE_DOUBLE_IDX 0x03 | |
64 | ||
65 | #define DMA_DEFAULT_FIFO_DEPTH 0x10 | |
66 | #define DMA_DEFAULT_ARB_RATE 0x01 | |
67 | /* Pass THREAD_RESERVE ORed with THREAD_FIFO for tparams */ | |
68 | #define DMA_THREAD_RESERVE_NORM (0x00 << 12) /* Def */ | |
69 | #define DMA_THREAD_RESERVE_ONET (0x01 << 12) | |
70 | #define DMA_THREAD_RESERVE_TWOT (0x02 << 12) | |
71 | #define DMA_THREAD_RESERVE_THREET (0x03 << 12) | |
72 | #define DMA_THREAD_FIFO_NONE (0x00 << 14) /* Def */ | |
73 | #define DMA_THREAD_FIFO_75 (0x01 << 14) | |
74 | #define DMA_THREAD_FIFO_25 (0x02 << 14) | |
75 | #define DMA_THREAD_FIFO_50 (0x03 << 14) | |
76 | ||
77 | /* DMA4_OCP_SYSCONFIG bits */ | |
78 | #define DMA_SYSCONFIG_MIDLEMODE_MASK (3 << 12) | |
79 | #define DMA_SYSCONFIG_CLOCKACTIVITY_MASK (3 << 8) | |
80 | #define DMA_SYSCONFIG_EMUFREE (1 << 5) | |
81 | #define DMA_SYSCONFIG_SIDLEMODE_MASK (3 << 3) | |
82 | #define DMA_SYSCONFIG_SOFTRESET (1 << 2) | |
83 | #define DMA_SYSCONFIG_AUTOIDLE (1 << 0) | |
84 | ||
85 | #define DMA_SYSCONFIG_MIDLEMODE(n) ((n) << 12) | |
86 | #define DMA_SYSCONFIG_SIDLEMODE(n) ((n) << 3) | |
87 | ||
88 | #define DMA_IDLEMODE_SMARTIDLE 0x2 | |
89 | #define DMA_IDLEMODE_NO_IDLE 0x1 | |
90 | #define DMA_IDLEMODE_FORCE_IDLE 0x0 | |
91 | ||
92 | /* Chaining modes*/ | |
93 | #ifndef CONFIG_ARCH_OMAP1 | |
94 | #define OMAP_DMA_STATIC_CHAIN 0x1 | |
95 | #define OMAP_DMA_DYNAMIC_CHAIN 0x2 | |
96 | #define OMAP_DMA_CHAIN_ACTIVE 0x1 | |
97 | #define OMAP_DMA_CHAIN_INACTIVE 0x0 | |
98 | #endif | |
99 | ||
100 | #define DMA_CH_PRIO_HIGH 0x1 | |
101 | #define DMA_CH_PRIO_LOW 0x0 /* Def */ | |
102 | ||
103 | /* Errata handling */ | |
104 | #define IS_DMA_ERRATA(id) (errata & (id)) | |
105 | #define SET_DMA_ERRATA(id) (errata |= (id)) | |
106 | ||
107 | #define DMA_ERRATA_IFRAME_BUFFERING BIT(0x0) | |
108 | #define DMA_ERRATA_PARALLEL_CHANNELS BIT(0x1) | |
109 | #define DMA_ERRATA_i378 BIT(0x2) | |
110 | #define DMA_ERRATA_i541 BIT(0x3) | |
111 | #define DMA_ERRATA_i88 BIT(0x4) | |
112 | #define DMA_ERRATA_3_3 BIT(0x5) | |
113 | #define DMA_ROMCODE_BUG BIT(0x6) | |
114 | ||
115 | /* Attributes for OMAP DMA Contrller */ | |
116 | #define DMA_LINKED_LCH BIT(0x0) | |
117 | #define GLOBAL_PRIORITY BIT(0x1) | |
118 | #define RESERVE_CHANNEL BIT(0x2) | |
119 | #define IS_CSSA_32 BIT(0x3) | |
120 | #define IS_CDSA_32 BIT(0x4) | |
121 | #define IS_RW_PRIORITY BIT(0x5) | |
122 | #define ENABLE_1510_MODE BIT(0x6) | |
123 | #define SRC_PORT BIT(0x7) | |
124 | #define DST_PORT BIT(0x8) | |
125 | #define SRC_INDEX BIT(0x9) | |
126 | #define DST_INDEX BIT(0xa) | |
127 | #define IS_BURST_ONLY4 BIT(0xb) | |
128 | #define CLEAR_CSR_ON_READ BIT(0xc) | |
129 | #define IS_WORD_16 BIT(0xd) | |
130 | #define ENABLE_16XX_MODE BIT(0xe) | |
131 | #define HS_CHANNELS_RESERVED BIT(0xf) | |
132 | ||
133 | /* Defines for DMA Capabilities */ | |
134 | #define DMA_HAS_TRANSPARENT_CAPS (0x1 << 18) | |
135 | #define DMA_HAS_CONSTANT_FILL_CAPS (0x1 << 19) | |
136 | #define DMA_HAS_DESCRIPTOR_CAPS (0x3 << 20) | |
137 | ||
138 | enum omap_reg_offsets { | |
139 | ||
140 | GCR, GSCR, GRST1, HW_ID, | |
141 | PCH2_ID, PCH0_ID, PCH1_ID, PCHG_ID, | |
142 | PCHD_ID, CAPS_0, CAPS_1, CAPS_2, | |
143 | CAPS_3, CAPS_4, PCH2_SR, PCH0_SR, | |
144 | PCH1_SR, PCHD_SR, REVISION, IRQSTATUS_L0, | |
145 | IRQSTATUS_L1, IRQSTATUS_L2, IRQSTATUS_L3, IRQENABLE_L0, | |
146 | IRQENABLE_L1, IRQENABLE_L2, IRQENABLE_L3, SYSSTATUS, | |
147 | OCP_SYSCONFIG, | |
148 | ||
149 | /* omap1+ specific */ | |
150 | CPC, CCR2, LCH_CTRL, | |
151 | ||
152 | /* Common registers for all omap's */ | |
153 | CSDP, CCR, CICR, CSR, | |
154 | CEN, CFN, CSFI, CSEI, | |
155 | CSAC, CDAC, CDEI, | |
156 | CDFI, CLNK_CTRL, | |
157 | ||
158 | /* Channel specific registers */ | |
159 | CSSA, CDSA, COLOR, | |
160 | CCEN, CCFN, | |
161 | ||
162 | /* omap3630 and omap4 specific */ | |
163 | CDP, CNDP, CCDN, | |
164 | ||
165 | }; | |
166 | ||
167 | enum omap_dma_burst_mode { | |
168 | OMAP_DMA_DATA_BURST_DIS = 0, | |
169 | OMAP_DMA_DATA_BURST_4, | |
170 | OMAP_DMA_DATA_BURST_8, | |
171 | OMAP_DMA_DATA_BURST_16, | |
172 | }; | |
173 | ||
174 | enum end_type { | |
175 | OMAP_DMA_LITTLE_ENDIAN = 0, | |
176 | OMAP_DMA_BIG_ENDIAN | |
177 | }; | |
178 | ||
179 | enum omap_dma_color_mode { | |
180 | OMAP_DMA_COLOR_DIS = 0, | |
181 | OMAP_DMA_CONSTANT_FILL, | |
182 | OMAP_DMA_TRANSPARENT_COPY | |
183 | }; | |
184 | ||
185 | enum omap_dma_write_mode { | |
186 | OMAP_DMA_WRITE_NON_POSTED = 0, | |
187 | OMAP_DMA_WRITE_POSTED, | |
188 | OMAP_DMA_WRITE_LAST_NON_POSTED | |
189 | }; | |
190 | ||
191 | enum omap_dma_channel_mode { | |
192 | OMAP_DMA_LCH_2D = 0, | |
193 | OMAP_DMA_LCH_G, | |
194 | OMAP_DMA_LCH_P, | |
195 | OMAP_DMA_LCH_PD | |
196 | }; | |
197 | ||
198 | struct omap_dma_channel_params { | |
199 | int data_type; /* data type 8,16,32 */ | |
200 | int elem_count; /* number of elements in a frame */ | |
201 | int frame_count; /* number of frames in a element */ | |
202 | ||
203 | int src_port; /* Only on OMAP1 REVISIT: Is this needed? */ | |
204 | int src_amode; /* constant, post increment, indexed, | |
205 | double indexed */ | |
206 | unsigned long src_start; /* source address : physical */ | |
207 | int src_ei; /* source element index */ | |
208 | int src_fi; /* source frame index */ | |
209 | ||
210 | int dst_port; /* Only on OMAP1 REVISIT: Is this needed? */ | |
211 | int dst_amode; /* constant, post increment, indexed, | |
212 | double indexed */ | |
213 | unsigned long dst_start; /* source address : physical */ | |
214 | int dst_ei; /* source element index */ | |
215 | int dst_fi; /* source frame index */ | |
216 | ||
217 | int trigger; /* trigger attached if the channel is | |
218 | synchronized */ | |
219 | int sync_mode; /* sycn on element, frame , block or packet */ | |
220 | int src_or_dst_synch; /* source synch(1) or destination synch(0) */ | |
221 | ||
222 | int ie; /* interrupt enabled */ | |
223 | ||
224 | unsigned char read_prio;/* read priority */ | |
225 | unsigned char write_prio;/* write priority */ | |
226 | ||
227 | #ifndef CONFIG_ARCH_OMAP1 | |
228 | enum omap_dma_burst_mode burst_mode; /* Burst mode 4/8/16 words */ | |
229 | #endif | |
230 | }; | |
231 | ||
232 | struct omap_dma_lch { | |
233 | int next_lch; | |
234 | int dev_id; | |
235 | u16 saved_csr; | |
236 | u16 enabled_irqs; | |
237 | const char *dev_name; | |
238 | void (*callback)(int lch, u16 ch_status, void *data); | |
239 | void *data; | |
240 | long flags; | |
45c3eb7d TL |
241 | int state; |
242 | int chain_id; | |
243 | int status; | |
244 | }; | |
245 | ||
246 | struct omap_dma_dev_attr { | |
247 | u32 dev_caps; | |
248 | u16 lch_count; | |
249 | u16 chan_count; | |
45c3eb7d TL |
250 | }; |
251 | ||
64a2dc3d RK |
252 | enum { |
253 | OMAP_DMA_REG_NONE, | |
254 | OMAP_DMA_REG_16BIT, | |
255 | OMAP_DMA_REG_2X16BIT, | |
256 | OMAP_DMA_REG_32BIT, | |
257 | }; | |
258 | ||
259 | struct omap_dma_reg { | |
260 | u16 offset; | |
261 | u8 stride; | |
262 | u8 type; | |
263 | }; | |
264 | ||
020c62ae PU |
265 | #define SDMA_FILTER_PARAM(hw_req) ((int[]) { (hw_req) }) |
266 | struct dma_slave_map; | |
267 | ||
45c3eb7d TL |
268 | /* System DMA platform data structure */ |
269 | struct omap_system_dma_plat_info { | |
596c471b RK |
270 | const struct omap_dma_reg *reg_map; |
271 | unsigned channel_stride; | |
45c3eb7d TL |
272 | struct omap_dma_dev_attr *dma_attr; |
273 | u32 errata; | |
45c3eb7d TL |
274 | void (*show_dma_caps)(void); |
275 | void (*clear_lch_regs)(int lch); | |
276 | void (*clear_dma)(int lch); | |
277 | void (*dma_write)(u32 val, int reg, int lch); | |
278 | u32 (*dma_read)(int reg, int lch); | |
020c62ae PU |
279 | |
280 | const struct dma_slave_map *slave_map; | |
281 | int slavecnt; | |
45c3eb7d TL |
282 | }; |
283 | ||
284 | #ifdef CONFIG_ARCH_OMAP2PLUS | |
285 | #define dma_omap2plus() 1 | |
286 | #else | |
287 | #define dma_omap2plus() 0 | |
7bedaa55 | 288 | #endif |
45c3eb7d | 289 | #define dma_omap1() (!dma_omap2plus()) |
b9e97822 RK |
290 | #define __dma_omap15xx(d) (dma_omap1() && (d)->dev_caps & ENABLE_1510_MODE) |
291 | #define __dma_omap16xx(d) (dma_omap1() && (d)->dev_caps & ENABLE_16XX_MODE) | |
292 | #define dma_omap15xx() __dma_omap15xx(d) | |
293 | #define dma_omap16xx() __dma_omap16xx(d) | |
45c3eb7d | 294 | |
a8db115e | 295 | #if defined(CONFIG_ARCH_OMAP) |
1b416c4b RK |
296 | extern struct omap_system_dma_plat_info *omap_get_plat_info(void); |
297 | ||
45c3eb7d TL |
298 | extern void omap_set_dma_priority(int lch, int dst_port, int priority); |
299 | extern int omap_request_dma(int dev_id, const char *dev_name, | |
300 | void (*callback)(int lch, u16 ch_status, void *data), | |
301 | void *data, int *dma_ch); | |
45c3eb7d TL |
302 | extern void omap_disable_dma_irq(int ch, u16 irq_bits); |
303 | extern void omap_free_dma(int ch); | |
304 | extern void omap_start_dma(int lch); | |
305 | extern void omap_stop_dma(int lch); | |
306 | extern void omap_set_dma_transfer_params(int lch, int data_type, | |
307 | int elem_count, int frame_count, | |
308 | int sync_mode, | |
309 | int dma_trigger, int src_or_dst_synch); | |
45c3eb7d TL |
310 | extern void omap_set_dma_channel_mode(int lch, enum omap_dma_channel_mode mode); |
311 | ||
312 | extern void omap_set_dma_src_params(int lch, int src_port, int src_amode, | |
313 | unsigned long src_start, | |
314 | int src_ei, int src_fi); | |
45c3eb7d TL |
315 | extern void omap_set_dma_src_data_pack(int lch, int enable); |
316 | extern void omap_set_dma_src_burst_mode(int lch, | |
317 | enum omap_dma_burst_mode burst_mode); | |
318 | ||
319 | extern void omap_set_dma_dest_params(int lch, int dest_port, int dest_amode, | |
320 | unsigned long dest_start, | |
321 | int dst_ei, int dst_fi); | |
45c3eb7d TL |
322 | extern void omap_set_dma_dest_data_pack(int lch, int enable); |
323 | extern void omap_set_dma_dest_burst_mode(int lch, | |
324 | enum omap_dma_burst_mode burst_mode); | |
325 | ||
45c3eb7d TL |
326 | extern dma_addr_t omap_get_dma_src_pos(int lch); |
327 | extern dma_addr_t omap_get_dma_dst_pos(int lch); | |
45c3eb7d TL |
328 | extern int omap_get_dma_active_status(int lch); |
329 | extern int omap_dma_running(void); | |
45c3eb7d | 330 | |
042c4884 AB |
331 | #if IS_ENABLED(CONFIG_FB_OMAP) |
332 | extern int omap_lcd_dma_running(void); | |
45c3eb7d TL |
333 | #else |
334 | static inline int omap_lcd_dma_running(void) | |
335 | { | |
336 | return 0; | |
337 | } | |
338 | #endif | |
339 | ||
a8db115e | 340 | #else /* CONFIG_ARCH_OMAP */ |
0768fb67 AB |
341 | static inline void omap_set_dma_priority(int lch, int dst_port, int priority) |
342 | { | |
343 | } | |
a8db115e PU |
344 | |
345 | static inline struct omap_system_dma_plat_info *omap_get_plat_info(void) | |
346 | { | |
347 | return NULL; | |
348 | } | |
349 | ||
350 | static inline int omap_request_dma(int dev_id, const char *dev_name, | |
351 | void (*callback)(int lch, u16 ch_status, void *data), | |
352 | void *data, int *dma_ch) | |
353 | { | |
354 | return -ENODEV; | |
355 | } | |
356 | ||
357 | static inline void omap_free_dma(int ch) { } | |
358 | ||
359 | #endif /* CONFIG_ARCH_OMAP */ | |
360 | ||
45c3eb7d | 361 | #endif /* __LINUX_OMAP_DMA_H */ |