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dma.h
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1 /*
2  * arch/arm/plat-omap/include/mach/dma.h
3  *
4  * Copyright (C) 2003 Nokia Corporation
5  * Author: Juha Yrjölä <[email protected]>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20  */
21 #ifndef __ASM_ARCH_DMA_H
22 #define __ASM_ARCH_DMA_H
23 
24 #include <linux/platform_device.h>
25 
26 /*
27  * TODO: These dma channel defines should go away once all
28  * the omap drivers hwmod adapted.
29  */
30 
31 /* Move omap4 specific defines to dma-44xx.h */
32 #include "dma-44xx.h"
33 
34 #define INT_DMA_LCD 25
35 
36 /* DMA channels for omap1 */
37 #define OMAP_DMA_NO_DEVICE 0
38 #define OMAP_DMA_MCSI1_TX 1
39 #define OMAP_DMA_MCSI1_RX 2
40 #define OMAP_DMA_I2C_RX 3
41 #define OMAP_DMA_I2C_TX 4
42 #define OMAP_DMA_EXT_NDMA_REQ 5
43 #define OMAP_DMA_EXT_NDMA_REQ2 6
44 #define OMAP_DMA_UWIRE_TX 7
45 #define OMAP_DMA_MCBSP1_TX 8
46 #define OMAP_DMA_MCBSP1_RX 9
47 #define OMAP_DMA_MCBSP3_TX 10
48 #define OMAP_DMA_MCBSP3_RX 11
49 #define OMAP_DMA_UART1_TX 12
50 #define OMAP_DMA_UART1_RX 13
51 #define OMAP_DMA_UART2_TX 14
52 #define OMAP_DMA_UART2_RX 15
53 #define OMAP_DMA_MCBSP2_TX 16
54 #define OMAP_DMA_MCBSP2_RX 17
55 #define OMAP_DMA_UART3_TX 18
56 #define OMAP_DMA_UART3_RX 19
57 #define OMAP_DMA_CAMERA_IF_RX 20
58 #define OMAP_DMA_MMC_TX 21
59 #define OMAP_DMA_MMC_RX 22
60 #define OMAP_DMA_NAND 23
61 #define OMAP_DMA_IRQ_LCD_LINE 24
62 #define OMAP_DMA_MEMORY_STICK 25
63 #define OMAP_DMA_USB_W2FC_RX0 26
64 #define OMAP_DMA_USB_W2FC_RX1 27
65 #define OMAP_DMA_USB_W2FC_RX2 28
66 #define OMAP_DMA_USB_W2FC_TX0 29
67 #define OMAP_DMA_USB_W2FC_TX1 30
68 #define OMAP_DMA_USB_W2FC_TX2 31
69 
70 /* These are only for 1610 */
71 #define OMAP_DMA_CRYPTO_DES_IN 32
72 #define OMAP_DMA_SPI_TX 33
73 #define OMAP_DMA_SPI_RX 34
74 #define OMAP_DMA_CRYPTO_HASH 35
75 #define OMAP_DMA_CCP_ATTN 36
76 #define OMAP_DMA_CCP_FIFO_NOT_EMPTY 37
77 #define OMAP_DMA_CMT_APE_TX_CHAN_0 38
78 #define OMAP_DMA_CMT_APE_RV_CHAN_0 39
79 #define OMAP_DMA_CMT_APE_TX_CHAN_1 40
80 #define OMAP_DMA_CMT_APE_RV_CHAN_1 41
81 #define OMAP_DMA_CMT_APE_TX_CHAN_2 42
82 #define OMAP_DMA_CMT_APE_RV_CHAN_2 43
83 #define OMAP_DMA_CMT_APE_TX_CHAN_3 44
84 #define OMAP_DMA_CMT_APE_RV_CHAN_3 45
85 #define OMAP_DMA_CMT_APE_TX_CHAN_4 46
86 #define OMAP_DMA_CMT_APE_RV_CHAN_4 47
87 #define OMAP_DMA_CMT_APE_TX_CHAN_5 48
88 #define OMAP_DMA_CMT_APE_RV_CHAN_5 49
89 #define OMAP_DMA_CMT_APE_TX_CHAN_6 50
90 #define OMAP_DMA_CMT_APE_RV_CHAN_6 51
91 #define OMAP_DMA_CMT_APE_TX_CHAN_7 52
92 #define OMAP_DMA_CMT_APE_RV_CHAN_7 53
93 #define OMAP_DMA_MMC2_TX 54
94 #define OMAP_DMA_MMC2_RX 55
95 #define OMAP_DMA_CRYPTO_DES_OUT 56
96 
97 /* DMA channels for 24xx */
98 #define OMAP24XX_DMA_NO_DEVICE 0
99 #define OMAP24XX_DMA_XTI_DMA 1 /* S_DMA_0 */
100 #define OMAP24XX_DMA_EXT_DMAREQ0 2 /* S_DMA_1 */
101 #define OMAP24XX_DMA_EXT_DMAREQ1 3 /* S_DMA_2 */
102 #define OMAP24XX_DMA_GPMC 4 /* S_DMA_3 */
103 #define OMAP24XX_DMA_GFX 5 /* S_DMA_4 */
104 #define OMAP24XX_DMA_DSS 6 /* S_DMA_5 */
105 #define OMAP242X_DMA_VLYNQ_TX 7 /* S_DMA_6 */
106 #define OMAP24XX_DMA_EXT_DMAREQ2 7 /* S_DMA_6 */
107 #define OMAP24XX_DMA_CWT 8 /* S_DMA_7 */
108 #define OMAP24XX_DMA_AES_TX 9 /* S_DMA_8 */
109 #define OMAP24XX_DMA_AES_RX 10 /* S_DMA_9 */
110 #define OMAP24XX_DMA_DES_TX 11 /* S_DMA_10 */
111 #define OMAP24XX_DMA_DES_RX 12 /* S_DMA_11 */
112 #define OMAP24XX_DMA_SHA1MD5_RX 13 /* S_DMA_12 */
113 #define OMAP34XX_DMA_SHA2MD5_RX 13 /* S_DMA_12 */
114 #define OMAP242X_DMA_EXT_DMAREQ2 14 /* S_DMA_13 */
115 #define OMAP242X_DMA_EXT_DMAREQ3 15 /* S_DMA_14 */
116 #define OMAP242X_DMA_EXT_DMAREQ4 16 /* S_DMA_15 */
117 #define OMAP242X_DMA_EAC_AC_RD 17 /* S_DMA_16 */
118 #define OMAP242X_DMA_EAC_AC_WR 18 /* S_DMA_17 */
119 #define OMAP242X_DMA_EAC_MD_UL_RD 19 /* S_DMA_18 */
120 #define OMAP242X_DMA_EAC_MD_UL_WR 20 /* S_DMA_19 */
121 #define OMAP242X_DMA_EAC_MD_DL_RD 21 /* S_DMA_20 */
122 #define OMAP242X_DMA_EAC_MD_DL_WR 22 /* S_DMA_21 */
123 #define OMAP242X_DMA_EAC_BT_UL_RD 23 /* S_DMA_22 */
124 #define OMAP242X_DMA_EAC_BT_UL_WR 24 /* S_DMA_23 */
125 #define OMAP242X_DMA_EAC_BT_DL_RD 25 /* S_DMA_24 */
126 #define OMAP242X_DMA_EAC_BT_DL_WR 26 /* S_DMA_25 */
127 #define OMAP243X_DMA_EXT_DMAREQ3 14 /* S_DMA_13 */
128 #define OMAP24XX_DMA_SPI3_TX0 15 /* S_DMA_14 */
129 #define OMAP24XX_DMA_SPI3_RX0 16 /* S_DMA_15 */
130 #define OMAP24XX_DMA_MCBSP3_TX 17 /* S_DMA_16 */
131 #define OMAP24XX_DMA_MCBSP3_RX 18 /* S_DMA_17 */
132 #define OMAP24XX_DMA_MCBSP4_TX 19 /* S_DMA_18 */
133 #define OMAP24XX_DMA_MCBSP4_RX 20 /* S_DMA_19 */
134 #define OMAP24XX_DMA_MCBSP5_TX 21 /* S_DMA_20 */
135 #define OMAP24XX_DMA_MCBSP5_RX 22 /* S_DMA_21 */
136 #define OMAP24XX_DMA_SPI3_TX1 23 /* S_DMA_22 */
137 #define OMAP24XX_DMA_SPI3_RX1 24 /* S_DMA_23 */
138 #define OMAP243X_DMA_EXT_DMAREQ4 25 /* S_DMA_24 */
139 #define OMAP243X_DMA_EXT_DMAREQ5 26 /* S_DMA_25 */
140 #define OMAP34XX_DMA_I2C3_TX 25 /* S_DMA_24 */
141 #define OMAP34XX_DMA_I2C3_RX 26 /* S_DMA_25 */
142 #define OMAP24XX_DMA_I2C1_TX 27 /* S_DMA_26 */
143 #define OMAP24XX_DMA_I2C1_RX 28 /* S_DMA_27 */
144 #define OMAP24XX_DMA_I2C2_TX 29 /* S_DMA_28 */
145 #define OMAP24XX_DMA_I2C2_RX 30 /* S_DMA_29 */
146 #define OMAP24XX_DMA_MCBSP1_TX 31 /* S_DMA_30 */
147 #define OMAP24XX_DMA_MCBSP1_RX 32 /* S_DMA_31 */
148 #define OMAP24XX_DMA_MCBSP2_TX 33 /* S_DMA_32 */
149 #define OMAP24XX_DMA_MCBSP2_RX 34 /* S_DMA_33 */
150 #define OMAP24XX_DMA_SPI1_TX0 35 /* S_DMA_34 */
151 #define OMAP24XX_DMA_SPI1_RX0 36 /* S_DMA_35 */
152 #define OMAP24XX_DMA_SPI1_TX1 37 /* S_DMA_36 */
153 #define OMAP24XX_DMA_SPI1_RX1 38 /* S_DMA_37 */
154 #define OMAP24XX_DMA_SPI1_TX2 39 /* S_DMA_38 */
155 #define OMAP24XX_DMA_SPI1_RX2 40 /* S_DMA_39 */
156 #define OMAP24XX_DMA_SPI1_TX3 41 /* S_DMA_40 */
157 #define OMAP24XX_DMA_SPI1_RX3 42 /* S_DMA_41 */
158 #define OMAP24XX_DMA_SPI2_TX0 43 /* S_DMA_42 */
159 #define OMAP24XX_DMA_SPI2_RX0 44 /* S_DMA_43 */
160 #define OMAP24XX_DMA_SPI2_TX1 45 /* S_DMA_44 */
161 #define OMAP24XX_DMA_SPI2_RX1 46 /* S_DMA_45 */
162 #define OMAP24XX_DMA_MMC2_TX 47 /* S_DMA_46 */
163 #define OMAP24XX_DMA_MMC2_RX 48 /* S_DMA_47 */
164 #define OMAP24XX_DMA_UART1_TX 49 /* S_DMA_48 */
165 #define OMAP24XX_DMA_UART1_RX 50 /* S_DMA_49 */
166 #define OMAP24XX_DMA_UART2_TX 51 /* S_DMA_50 */
167 #define OMAP24XX_DMA_UART2_RX 52 /* S_DMA_51 */
168 #define OMAP24XX_DMA_UART3_TX 53 /* S_DMA_52 */
169 #define OMAP24XX_DMA_UART3_RX 54 /* S_DMA_53 */
170 #define OMAP24XX_DMA_USB_W2FC_TX0 55 /* S_DMA_54 */
171 #define OMAP24XX_DMA_USB_W2FC_RX0 56 /* S_DMA_55 */
172 #define OMAP24XX_DMA_USB_W2FC_TX1 57 /* S_DMA_56 */
173 #define OMAP24XX_DMA_USB_W2FC_RX1 58 /* S_DMA_57 */
174 #define OMAP24XX_DMA_USB_W2FC_TX2 59 /* S_DMA_58 */
175 #define OMAP24XX_DMA_USB_W2FC_RX2 60 /* S_DMA_59 */
176 #define OMAP24XX_DMA_MMC1_TX 61 /* S_DMA_60 */
177 #define OMAP24XX_DMA_MMC1_RX 62 /* S_DMA_61 */
178 #define OMAP24XX_DMA_MS 63 /* S_DMA_62 */
179 #define OMAP242X_DMA_EXT_DMAREQ5 64 /* S_DMA_63 */
180 #define OMAP243X_DMA_EXT_DMAREQ6 64 /* S_DMA_63 */
181 #define OMAP34XX_DMA_EXT_DMAREQ3 64 /* S_DMA_63 */
182 #define OMAP34XX_DMA_AES2_TX 65 /* S_DMA_64 */
183 #define OMAP34XX_DMA_AES2_RX 66 /* S_DMA_65 */
184 #define OMAP34XX_DMA_DES2_TX 67 /* S_DMA_66 */
185 #define OMAP34XX_DMA_DES2_RX 68 /* S_DMA_67 */
186 #define OMAP34XX_DMA_SHA1MD5_RX 69 /* S_DMA_68 */
187 #define OMAP34XX_DMA_SPI4_TX0 70 /* S_DMA_69 */
188 #define OMAP34XX_DMA_SPI4_RX0 71 /* S_DMA_70 */
189 #define OMAP34XX_DSS_DMA0 72 /* S_DMA_71 */
190 #define OMAP34XX_DSS_DMA1 73 /* S_DMA_72 */
191 #define OMAP34XX_DSS_DMA2 74 /* S_DMA_73 */
192 #define OMAP34XX_DSS_DMA3 75 /* S_DMA_74 */
193 #define OMAP34XX_DMA_MMC3_TX 77 /* S_DMA_76 */
194 #define OMAP34XX_DMA_MMC3_RX 78 /* S_DMA_77 */
195 #define OMAP34XX_DMA_USIM_TX 79 /* S_DMA_78 */
196 #define OMAP34XX_DMA_USIM_RX 80 /* S_DMA_79 */
197 
198 #define OMAP36XX_DMA_UART4_TX 81 /* S_DMA_80 */
199 #define OMAP36XX_DMA_UART4_RX 82 /* S_DMA_81 */
200 
201 /* Only for AM35xx */
202 #define AM35XX_DMA_UART4_TX 54
203 #define AM35XX_DMA_UART4_RX 55
204 
205 /*----------------------------------------------------------------------------*/
206 
207 #define OMAP1_DMA_TOUT_IRQ (1 << 0)
208 #define OMAP_DMA_DROP_IRQ (1 << 1)
209 #define OMAP_DMA_HALF_IRQ (1 << 2)
210 #define OMAP_DMA_FRAME_IRQ (1 << 3)
211 #define OMAP_DMA_LAST_IRQ (1 << 4)
212 #define OMAP_DMA_BLOCK_IRQ (1 << 5)
213 #define OMAP1_DMA_SYNC_IRQ (1 << 6)
214 #define OMAP2_DMA_PKT_IRQ (1 << 7)
215 #define OMAP2_DMA_TRANS_ERR_IRQ (1 << 8)
216 #define OMAP2_DMA_SECURE_ERR_IRQ (1 << 9)
217 #define OMAP2_DMA_SUPERVISOR_ERR_IRQ (1 << 10)
218 #define OMAP2_DMA_MISALIGNED_ERR_IRQ (1 << 11)
219 
220 #define OMAP_DMA_CCR_EN (1 << 7)
221 #define OMAP_DMA_CCR_RD_ACTIVE (1 << 9)
222 #define OMAP_DMA_CCR_WR_ACTIVE (1 << 10)
223 #define OMAP_DMA_CCR_SEL_SRC_DST_SYNC (1 << 24)
224 #define OMAP_DMA_CCR_BUFFERING_DISABLE (1 << 25)
225 
226 #define OMAP_DMA_DATA_TYPE_S8 0x00
227 #define OMAP_DMA_DATA_TYPE_S16 0x01
228 #define OMAP_DMA_DATA_TYPE_S32 0x02
229 
230 #define OMAP_DMA_SYNC_ELEMENT 0x00
231 #define OMAP_DMA_SYNC_FRAME 0x01
232 #define OMAP_DMA_SYNC_BLOCK 0x02
233 #define OMAP_DMA_SYNC_PACKET 0x03
234 
235 #define OMAP_DMA_DST_SYNC_PREFETCH 0x02
236 #define OMAP_DMA_SRC_SYNC 0x01
237 #define OMAP_DMA_DST_SYNC 0x00
238 
239 #define OMAP_DMA_PORT_EMIFF 0x00
240 #define OMAP_DMA_PORT_EMIFS 0x01
241 #define OMAP_DMA_PORT_OCP_T1 0x02
242 #define OMAP_DMA_PORT_TIPB 0x03
243 #define OMAP_DMA_PORT_OCP_T2 0x04
244 #define OMAP_DMA_PORT_MPUI 0x05
245 
246 #define OMAP_DMA_AMODE_CONSTANT 0x00
247 #define OMAP_DMA_AMODE_POST_INC 0x01
248 #define OMAP_DMA_AMODE_SINGLE_IDX 0x02
249 #define OMAP_DMA_AMODE_DOUBLE_IDX 0x03
250 
251 #define DMA_DEFAULT_FIFO_DEPTH 0x10
252 #define DMA_DEFAULT_ARB_RATE 0x01
253 /* Pass THREAD_RESERVE ORed with THREAD_FIFO for tparams */
254 #define DMA_THREAD_RESERVE_NORM (0x00 << 12) /* Def */
255 #define DMA_THREAD_RESERVE_ONET (0x01 << 12)
256 #define DMA_THREAD_RESERVE_TWOT (0x02 << 12)
257 #define DMA_THREAD_RESERVE_THREET (0x03 << 12)
258 #define DMA_THREAD_FIFO_NONE (0x00 << 14) /* Def */
259 #define DMA_THREAD_FIFO_75 (0x01 << 14)
260 #define DMA_THREAD_FIFO_25 (0x02 << 14)
261 #define DMA_THREAD_FIFO_50 (0x03 << 14)
262 
263 /* DMA4_OCP_SYSCONFIG bits */
264 #define DMA_SYSCONFIG_MIDLEMODE_MASK (3 << 12)
265 #define DMA_SYSCONFIG_CLOCKACTIVITY_MASK (3 << 8)
266 #define DMA_SYSCONFIG_EMUFREE (1 << 5)
267 #define DMA_SYSCONFIG_SIDLEMODE_MASK (3 << 3)
268 #define DMA_SYSCONFIG_SOFTRESET (1 << 2)
269 #define DMA_SYSCONFIG_AUTOIDLE (1 << 0)
270 
271 #define DMA_SYSCONFIG_MIDLEMODE(n) ((n) << 12)
272 #define DMA_SYSCONFIG_SIDLEMODE(n) ((n) << 3)
273 
274 #define DMA_IDLEMODE_SMARTIDLE 0x2
275 #define DMA_IDLEMODE_NO_IDLE 0x1
276 #define DMA_IDLEMODE_FORCE_IDLE 0x0
277 
278 /* Chaining modes*/
279 #ifndef CONFIG_ARCH_OMAP1
280 #define OMAP_DMA_STATIC_CHAIN 0x1
281 #define OMAP_DMA_DYNAMIC_CHAIN 0x2
282 #define OMAP_DMA_CHAIN_ACTIVE 0x1
283 #define OMAP_DMA_CHAIN_INACTIVE 0x0
284 #endif
285 
286 #define DMA_CH_PRIO_HIGH 0x1
287 #define DMA_CH_PRIO_LOW 0x0 /* Def */
288 
289 /* Errata handling */
290 #define IS_DMA_ERRATA(id) (errata & (id))
291 #define SET_DMA_ERRATA(id) (errata |= (id))
292 
293 #define DMA_ERRATA_IFRAME_BUFFERING BIT(0x0)
294 #define DMA_ERRATA_PARALLEL_CHANNELS BIT(0x1)
295 #define DMA_ERRATA_i378 BIT(0x2)
296 #define DMA_ERRATA_i541 BIT(0x3)
297 #define DMA_ERRATA_i88 BIT(0x4)
298 #define DMA_ERRATA_3_3 BIT(0x5)
299 #define DMA_ROMCODE_BUG BIT(0x6)
300 
301 /* Attributes for OMAP DMA Contrller */
302 #define DMA_LINKED_LCH BIT(0x0)
303 #define GLOBAL_PRIORITY BIT(0x1)
304 #define RESERVE_CHANNEL BIT(0x2)
305 #define IS_CSSA_32 BIT(0x3)
306 #define IS_CDSA_32 BIT(0x4)
307 #define IS_RW_PRIORITY BIT(0x5)
308 #define ENABLE_1510_MODE BIT(0x6)
309 #define SRC_PORT BIT(0x7)
310 #define DST_PORT BIT(0x8)
311 #define SRC_INDEX BIT(0x9)
312 #define DST_INDEX BIT(0xA)
313 #define IS_BURST_ONLY4 BIT(0xB)
314 #define CLEAR_CSR_ON_READ BIT(0xC)
315 #define IS_WORD_16 BIT(0xD)
316 
317 /* Defines for DMA Capabilities */
318 #define DMA_HAS_TRANSPARENT_CAPS (0x1 << 18)
319 #define DMA_HAS_CONSTANT_FILL_CAPS (0x1 << 19)
320 #define DMA_HAS_DESCRIPTOR_CAPS (0x3 << 20)
321 
322 enum omap_reg_offsets {
323 
324 GCR, GSCR, GRST1, HW_ID,
325 PCH2_ID, PCH0_ID, PCH1_ID, PCHG_ID,
326 PCHD_ID, CAPS_0, CAPS_1, CAPS_2,
327 CAPS_3, CAPS_4, PCH2_SR, PCH0_SR,
328 PCH1_SR, PCHD_SR, REVISION, IRQSTATUS_L0,
329 IRQSTATUS_L1, IRQSTATUS_L2, IRQSTATUS_L3, IRQENABLE_L0,
330 IRQENABLE_L1, IRQENABLE_L2, IRQENABLE_L3, SYSSTATUS,
331 OCP_SYSCONFIG,
332 
333 /* omap1+ specific */
334 CPC, CCR2, LCH_CTRL,
335 
336 /* Common registers for all omap's */
337 CSDP, CCR, CICR, CSR,
338 CEN, CFN, CSFI, CSEI,
339 CSAC, CDAC, CDEI,
340 CDFI, CLNK_CTRL,
341 
342 /* Channel specific registers */
343 CSSA, CDSA, COLOR,
344 CCEN, CCFN,
345 
346 /* omap3630 and omap4 specific */
347 CDP, CNDP, CCDN,
348 
349 };
350 
351 enum omap_dma_burst_mode {
352  OMAP_DMA_DATA_BURST_DIS = 0,
353  OMAP_DMA_DATA_BURST_4,
354  OMAP_DMA_DATA_BURST_8,
355  OMAP_DMA_DATA_BURST_16,
356 };
357 
358 enum end_type {
359  OMAP_DMA_LITTLE_ENDIAN = 0,
360  OMAP_DMA_BIG_ENDIAN
361 };
362 
363 enum omap_dma_color_mode {
364  OMAP_DMA_COLOR_DIS = 0,
365  OMAP_DMA_CONSTANT_FILL,
366  OMAP_DMA_TRANSPARENT_COPY
367 };
368 
369 enum omap_dma_write_mode {
370  OMAP_DMA_WRITE_NON_POSTED = 0,
371  OMAP_DMA_WRITE_POSTED,
372  OMAP_DMA_WRITE_LAST_NON_POSTED
373 };
374 
375 enum omap_dma_channel_mode {
376  OMAP_DMA_LCH_2D = 0,
377  OMAP_DMA_LCH_G,
378  OMAP_DMA_LCH_P,
379  OMAP_DMA_LCH_PD
380 };
381 
382 struct omap_dma_channel_params {
383  int data_type; /* data type 8,16,32 */
384  int elem_count; /* number of elements in a frame */
385  int frame_count; /* number of frames in a element */
386 
387  int src_port; /* Only on OMAP1 REVISIT: Is this needed? */
388  int src_amode; /* constant, post increment, indexed,
389  double indexed */
390  unsigned long src_start; /* source address : physical */
391  int src_ei; /* source element index */
392  int src_fi; /* source frame index */
393 
394  int dst_port; /* Only on OMAP1 REVISIT: Is this needed? */
395  int dst_amode; /* constant, post increment, indexed,
396  double indexed */
397  unsigned long dst_start; /* source address : physical */
398  int dst_ei; /* source element index */
399  int dst_fi; /* source frame index */
400 
401  int trigger; /* trigger attached if the channel is
402  synchronized */
403  int sync_mode; /* sycn on element, frame , block or packet */
404  int src_or_dst_synch; /* source synch(1) or destination synch(0) */
405 
406  int ie; /* interrupt enabled */
407 
408  unsigned char read_prio;/* read priority */
409  unsigned char write_prio;/* write priority */
410 
411 #ifndef CONFIG_ARCH_OMAP1
412  enum omap_dma_burst_mode burst_mode; /* Burst mode 4/8/16 words */
413 #endif
414 };
415 
416 struct omap_dma_lch {
417  int next_lch;
418  int dev_id;
419  u16 saved_csr;
420  u16 enabled_irqs;
421  const char *dev_name;
422  void (*callback)(int lch, u16 ch_status, void *data);
423  void *data;
424  long flags;
425  /* required for Dynamic chaining */
426  int prev_linked_ch;
427  int next_linked_ch;
428  int state;
429  int chain_id;
430  int status;
431 };
432 
433 struct omap_dma_dev_attr {
434  u32 dev_caps;
435  u16 lch_count;
436  u16 chan_count;
437  struct omap_dma_lch *chan;
438 };
439 
440 /* System DMA platform data structure */
441 struct omap_system_dma_plat_info {
442  struct omap_dma_dev_attr *dma_attr;
443  u32 errata;
444  void (*disable_irq_lch)(int lch);
445  void (*show_dma_caps)(void);
446  void (*clear_lch_regs)(int lch);
447  void (*clear_dma)(int lch);
448  void (*dma_write)(u32 val, int reg, int lch);
449  u32 (*dma_read)(int reg, int lch);
450 };
451 
452 extern void __init omap_init_consistent_dma_size(void);
453 extern void omap_set_dma_priority(int lch, int dst_port, int priority);
454 extern int omap_request_dma(int dev_id, const char *dev_name,
455  void (*callback)(int lch, u16 ch_status, void *data),
456  void *data, int *dma_ch);
457 extern void omap_enable_dma_irq(int ch, u16 irq_bits);
458 extern void omap_disable_dma_irq(int ch, u16 irq_bits);
459 extern void omap_free_dma(int ch);
460 extern void omap_start_dma(int lch);
461 extern void omap_stop_dma(int lch);
462 extern void omap_set_dma_transfer_params(int lch, int data_type,
463  int elem_count, int frame_count,
464  int sync_mode,
465  int dma_trigger, int src_or_dst_synch);
466 extern void omap_set_dma_color_mode(int lch, enum omap_dma_color_mode mode,
467  u32 color);
468 extern void omap_set_dma_write_mode(int lch, enum omap_dma_write_mode mode);
469 extern void omap_set_dma_channel_mode(int lch, enum omap_dma_channel_mode mode);
470 
471 extern void omap_set_dma_src_params(int lch, int src_port, int src_amode,
472  unsigned long src_start,
473  int src_ei, int src_fi);
474 extern void omap_set_dma_src_index(int lch, int eidx, int fidx);
475 extern void omap_set_dma_src_data_pack(int lch, int enable);
476 extern void omap_set_dma_src_burst_mode(int lch,
477  enum omap_dma_burst_mode burst_mode);
478 
479 extern void omap_set_dma_dest_params(int lch, int dest_port, int dest_amode,
480  unsigned long dest_start,
481  int dst_ei, int dst_fi);
482 extern void omap_set_dma_dest_index(int lch, int eidx, int fidx);
483 extern void omap_set_dma_dest_data_pack(int lch, int enable);
484 extern void omap_set_dma_dest_burst_mode(int lch,
485  enum omap_dma_burst_mode burst_mode);
486 
487 extern void omap_set_dma_params(int lch,
488  struct omap_dma_channel_params *params);
489 
490 extern void omap_dma_link_lch(int lch_head, int lch_queue);
491 extern void omap_dma_unlink_lch(int lch_head, int lch_queue);
492 
493 extern int omap_set_dma_callback(int lch,
494  void (*callback)(int lch, u16 ch_status, void *data),
495  void *data);
496 extern dma_addr_t omap_get_dma_src_pos(int lch);
497 extern dma_addr_t omap_get_dma_dst_pos(int lch);
498 extern void omap_clear_dma(int lch);
499 extern int omap_get_dma_active_status(int lch);
500 extern int omap_dma_running(void);
501 extern void omap_dma_set_global_params(int arb_rate, int max_fifo_depth,
502  int tparams);
503 extern int omap_dma_set_prio_lch(int lch, unsigned char read_prio,
504  unsigned char write_prio);
505 extern void omap_set_dma_dst_endian_type(int lch, enum end_type etype);
506 extern void omap_set_dma_src_endian_type(int lch, enum end_type etype);
507 extern int omap_get_dma_index(int lch, int *ei, int *fi);
508 
509 void omap_dma_global_context_save(void);
510 void omap_dma_global_context_restore(void);
511 
512 extern void omap_dma_disable_irq(int lch);
513 
514 /* Chaining APIs */
515 #ifndef CONFIG_ARCH_OMAP1
516 extern int omap_request_dma_chain(int dev_id, const char *dev_name,
517  void (*callback) (int lch, u16 ch_status,
518  void *data),
519  int *chain_id, int no_of_chans,
520  int chain_mode,
521  struct omap_dma_channel_params params);
522 extern int omap_free_dma_chain(int chain_id);
523 extern int omap_dma_chain_a_transfer(int chain_id, int src_start,
524  int dest_start, int elem_count,
525  int frame_count, void *callbk_data);
526 extern int omap_start_dma_chain_transfers(int chain_id);
527 extern int omap_stop_dma_chain_transfers(int chain_id);
528 extern int omap_get_dma_chain_index(int chain_id, int *ei, int *fi);
529 extern int omap_get_dma_chain_dst_pos(int chain_id);
530 extern int omap_get_dma_chain_src_pos(int chain_id);
531 
532 extern int omap_modify_dma_chain_params(int chain_id,
533  struct omap_dma_channel_params params);
534 extern int omap_dma_chain_status(int chain_id);
535 #endif
536 
537 #if defined(CONFIG_ARCH_OMAP1) && defined(CONFIG_FB_OMAP)
538 #include <mach/lcd_dma.h>
539 #else
540 static inline int omap_lcd_dma_running(void)
541 {
542  return 0;
543 }
544 #endif
545 
546 #endif /* __ASM_ARCH_DMA_H */
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