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Linux 4.19.133
[linux/fpc-iii.git] / drivers / dma / coh901318.c
blob935d1697ec363028a8b236a99ceee14c151c5031
1 /*
2 * driver/dma/coh901318.c
3 *
4 * Copyright (C) 2007-2009 ST-Ericsson
5 * License terms: GNU General Public License (GPL) version 2
6 * DMA driver for COH 901 318
7 * Author: Per Friden <per.friden@stericsson.com>
8 */
9
10 #include <linux/init.h>
11 #include <linux/module.h>
12 #include <linux/kernel.h> /* printk() */
13 #include <linux/fs.h> /* everything... */
14 #include <linux/scatterlist.h>
15 #include <linux/slab.h> /* kmalloc() */
16 #include <linux/dmaengine.h>
17 #include <linux/platform_device.h>
18 #include <linux/device.h>
19 #include <linux/irqreturn.h>
20 #include <linux/interrupt.h>
21 #include <linux/io.h>
22 #include <linux/uaccess.h>
23 #include <linux/debugfs.h>
24 #include <linux/platform_data/dma-coh901318.h>
25 #include <linux/of_dma.h>
26
27 #include "coh901318.h"
28 #include "dmaengine.h"
29
30 #define COH901318_MOD32_MASK (0x1F)
31 #define COH901318_WORD_MASK (0xFFFFFFFF)
32 /* INT_STATUS - Interrupt Status Registers 32bit (R/-) */
33 #define COH901318_INT_STATUS1 (0x0000)
34 #define COH901318_INT_STATUS2 (0x0004)
35 /* TC_INT_STATUS - Terminal Count Interrupt Status Registers 32bit (R/-) */
36 #define COH901318_TC_INT_STATUS1 (0x0008)
37 #define COH901318_TC_INT_STATUS2 (0x000C)
38 /* TC_INT_CLEAR - Terminal Count Interrupt Clear Registers 32bit (-/W) */
39 #define COH901318_TC_INT_CLEAR1 (0x0010)
40 #define COH901318_TC_INT_CLEAR2 (0x0014)
41 /* RAW_TC_INT_STATUS - Raw Term Count Interrupt Status Registers 32bit (R/-) */
42 #define COH901318_RAW_TC_INT_STATUS1 (0x0018)
43 #define COH901318_RAW_TC_INT_STATUS2 (0x001C)
44 /* BE_INT_STATUS - Bus Error Interrupt Status Registers 32bit (R/-) */
45 #define COH901318_BE_INT_STATUS1 (0x0020)
46 #define COH901318_BE_INT_STATUS2 (0x0024)
47 /* BE_INT_CLEAR - Bus Error Interrupt Clear Registers 32bit (-/W) */
48 #define COH901318_BE_INT_CLEAR1 (0x0028)
49 #define COH901318_BE_INT_CLEAR2 (0x002C)
50 /* RAW_BE_INT_STATUS - Raw Term Count Interrupt Status Registers 32bit (R/-) */
51 #define COH901318_RAW_BE_INT_STATUS1 (0x0030)
52 #define COH901318_RAW_BE_INT_STATUS2 (0x0034)
53
54 /*
55 * CX_CFG - Channel Configuration Registers 32bit (R/W)
56 */
57 #define COH901318_CX_CFG (0x0100)
58 #define COH901318_CX_CFG_SPACING (0x04)
59 /* Channel enable activates tha dma job */
60 #define COH901318_CX_CFG_CH_ENABLE (0x00000001)
61 #define COH901318_CX_CFG_CH_DISABLE (0x00000000)
62 /* Request Mode */
63 #define COH901318_CX_CFG_RM_MASK (0x00000006)
64 #define COH901318_CX_CFG_RM_MEMORY_TO_MEMORY (0x0 << 1)
65 #define COH901318_CX_CFG_RM_PRIMARY_TO_MEMORY (0x1 << 1)
66 #define COH901318_CX_CFG_RM_MEMORY_TO_PRIMARY (0x1 << 1)
67 #define COH901318_CX_CFG_RM_PRIMARY_TO_SECONDARY (0x3 << 1)
68 #define COH901318_CX_CFG_RM_SECONDARY_TO_PRIMARY (0x3 << 1)
69 /* Linked channel request field. RM must == 11 */
70 #define COH901318_CX_CFG_LCRF_SHIFT 3
71 #define COH901318_CX_CFG_LCRF_MASK (0x000001F8)
72 #define COH901318_CX_CFG_LCR_DISABLE (0x00000000)
73 /* Terminal Counter Interrupt Request Mask */
74 #define COH901318_CX_CFG_TC_IRQ_ENABLE (0x00000200)
75 #define COH901318_CX_CFG_TC_IRQ_DISABLE (0x00000000)
76 /* Bus Error interrupt Mask */
77 #define COH901318_CX_CFG_BE_IRQ_ENABLE (0x00000400)
78 #define COH901318_CX_CFG_BE_IRQ_DISABLE (0x00000000)
79
80 /*
81 * CX_STAT - Channel Status Registers 32bit (R/-)
82 */
83 #define COH901318_CX_STAT (0x0200)
84 #define COH901318_CX_STAT_SPACING (0x04)
85 #define COH901318_CX_STAT_RBE_IRQ_IND (0x00000008)
86 #define COH901318_CX_STAT_RTC_IRQ_IND (0x00000004)
87 #define COH901318_CX_STAT_ACTIVE (0x00000002)
88 #define COH901318_CX_STAT_ENABLED (0x00000001)
89
90 /*
91 * CX_CTRL - Channel Control Registers 32bit (R/W)
92 */
93 #define COH901318_CX_CTRL (0x0400)
94 #define COH901318_CX_CTRL_SPACING (0x10)
95 /* Transfer Count Enable */
96 #define COH901318_CX_CTRL_TC_ENABLE (0x00001000)
97 #define COH901318_CX_CTRL_TC_DISABLE (0x00000000)
98 /* Transfer Count Value 0 - 4095 */
99 #define COH901318_CX_CTRL_TC_VALUE_MASK (0x00000FFF)
100 /* Burst count */
101 #define COH901318_CX_CTRL_BURST_COUNT_MASK (0x0000E000)
102 #define COH901318_CX_CTRL_BURST_COUNT_64_BYTES (0x7 << 13)
103 #define COH901318_CX_CTRL_BURST_COUNT_48_BYTES (0x6 << 13)
104 #define COH901318_CX_CTRL_BURST_COUNT_32_BYTES (0x5 << 13)
105 #define COH901318_CX_CTRL_BURST_COUNT_16_BYTES (0x4 << 13)
106 #define COH901318_CX_CTRL_BURST_COUNT_8_BYTES (0x3 << 13)
107 #define COH901318_CX_CTRL_BURST_COUNT_4_BYTES (0x2 << 13)
108 #define COH901318_CX_CTRL_BURST_COUNT_2_BYTES (0x1 << 13)
109 #define COH901318_CX_CTRL_BURST_COUNT_1_BYTE (0x0 << 13)
110 /* Source bus size */
111 #define COH901318_CX_CTRL_SRC_BUS_SIZE_MASK (0x00030000)
112 #define COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS (0x2 << 16)
113 #define COH901318_CX_CTRL_SRC_BUS_SIZE_16_BITS (0x1 << 16)
114 #define COH901318_CX_CTRL_SRC_BUS_SIZE_8_BITS (0x0 << 16)
115 /* Source address increment */
116 #define COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE (0x00040000)
117 #define COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE (0x00000000)
118 /* Destination Bus Size */
119 #define COH901318_CX_CTRL_DST_BUS_SIZE_MASK (0x00180000)
120 #define COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS (0x2 << 19)
121 #define COH901318_CX_CTRL_DST_BUS_SIZE_16_BITS (0x1 << 19)
122 #define COH901318_CX_CTRL_DST_BUS_SIZE_8_BITS (0x0 << 19)
123 /* Destination address increment */
124 #define COH901318_CX_CTRL_DST_ADDR_INC_ENABLE (0x00200000)
125 #define COH901318_CX_CTRL_DST_ADDR_INC_DISABLE (0x00000000)
126 /* Master Mode (Master2 is only connected to MSL) */
127 #define COH901318_CX_CTRL_MASTER_MODE_MASK (0x00C00000)
128 #define COH901318_CX_CTRL_MASTER_MODE_M2R_M1W (0x3 << 22)
129 #define COH901318_CX_CTRL_MASTER_MODE_M1R_M2W (0x2 << 22)
130 #define COH901318_CX_CTRL_MASTER_MODE_M2RW (0x1 << 22)
131 #define COH901318_CX_CTRL_MASTER_MODE_M1RW (0x0 << 22)
132 /* Terminal Count flag to PER enable */
133 #define COH901318_CX_CTRL_TCP_ENABLE (0x01000000)
134 #define COH901318_CX_CTRL_TCP_DISABLE (0x00000000)
135 /* Terminal Count flags to CPU enable */
136 #define COH901318_CX_CTRL_TC_IRQ_ENABLE (0x02000000)
137 #define COH901318_CX_CTRL_TC_IRQ_DISABLE (0x00000000)
138 /* Hand shake to peripheral */
139 #define COH901318_CX_CTRL_HSP_ENABLE (0x04000000)
140 #define COH901318_CX_CTRL_HSP_DISABLE (0x00000000)
141 #define COH901318_CX_CTRL_HSS_ENABLE (0x08000000)
142 #define COH901318_CX_CTRL_HSS_DISABLE (0x00000000)
143 /* DMA mode */
144 #define COH901318_CX_CTRL_DDMA_MASK (0x30000000)
145 #define COH901318_CX_CTRL_DDMA_LEGACY (0x0 << 28)
146 #define COH901318_CX_CTRL_DDMA_DEMAND_DMA1 (0x1 << 28)
147 #define COH901318_CX_CTRL_DDMA_DEMAND_DMA2 (0x2 << 28)
148 /* Primary Request Data Destination */
149 #define COH901318_CX_CTRL_PRDD_MASK (0x40000000)
150 #define COH901318_CX_CTRL_PRDD_DEST (0x1 << 30)
151 #define COH901318_CX_CTRL_PRDD_SOURCE (0x0 << 30)
152
153 /*
154 * CX_SRC_ADDR - Channel Source Address Registers 32bit (R/W)
155 */
156 #define COH901318_CX_SRC_ADDR (0x0404)
157 #define COH901318_CX_SRC_ADDR_SPACING (0x10)
158
159 /*
160 * CX_DST_ADDR - Channel Destination Address Registers 32bit R/W
161 */
162 #define COH901318_CX_DST_ADDR (0x0408)
163 #define COH901318_CX_DST_ADDR_SPACING (0x10)
164
165 /*
166 * CX_LNK_ADDR - Channel Link Address Registers 32bit (R/W)
167 */
168 #define COH901318_CX_LNK_ADDR (0x040C)
169 #define COH901318_CX_LNK_ADDR_SPACING (0x10)
170 #define COH901318_CX_LNK_LINK_IMMEDIATE (0x00000001)
171
172 /**
173 * struct coh901318_params - parameters for DMAC configuration
174 * @config: DMA config register
175 * @ctrl_lli_last: DMA control register for the last lli in the list
176 * @ctrl_lli: DMA control register for an lli
177 * @ctrl_lli_chained: DMA control register for a chained lli
178 */
179 struct coh901318_params {
180 u32 config;
181 u32 ctrl_lli_last;
182 u32 ctrl_lli;
183 u32 ctrl_lli_chained;
184 };
185
186 /**
187 * struct coh_dma_channel - dma channel base
188 * @name: ascii name of dma channel
189 * @number: channel id number
190 * @desc_nbr_max: number of preallocated descriptors
191 * @priority_high: prio of channel, 0 low otherwise high.
192 * @param: configuration parameters
193 */
194 struct coh_dma_channel {
195 const char name[32];
196 const int number;
197 const int desc_nbr_max;
198 const int priority_high;
199 const struct coh901318_params param;
200 };
201
202 /**
203 * struct powersave - DMA power save structure
204 * @lock: lock protecting data in this struct
205 * @started_channels: bit mask indicating active dma channels
206 */
207 struct powersave {
208 spinlock_t lock;
209 u64 started_channels;
210 };
211
212 /* points out all dma slave channels.
213 * Syntax is [A1, B1, A2, B2, .... ,-1,-1]
214 * Select all channels from A to B, end of list is marked with -1,-1
215 */
216 static int dma_slave_channels[] = {
217 U300_DMA_MSL_TX_0, U300_DMA_SPI_RX,
218 U300_DMA_UART1_TX, U300_DMA_UART1_RX, -1, -1};
219
220 /* points out all dma memcpy channels. */
221 static int dma_memcpy_channels[] = {
222 U300_DMA_GENERAL_PURPOSE_0, U300_DMA_GENERAL_PURPOSE_8, -1, -1};
223
224 #define flags_memcpy_config (COH901318_CX_CFG_CH_DISABLE | \
225 COH901318_CX_CFG_RM_MEMORY_TO_MEMORY | \
226 COH901318_CX_CFG_LCR_DISABLE | \
227 COH901318_CX_CFG_TC_IRQ_ENABLE | \
228 COH901318_CX_CFG_BE_IRQ_ENABLE)
229 #define flags_memcpy_lli_chained (COH901318_CX_CTRL_TC_ENABLE | \
230 COH901318_CX_CTRL_BURST_COUNT_32_BYTES | \
231 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS | \
232 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE | \
233 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS | \
234 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE | \
235 COH901318_CX_CTRL_MASTER_MODE_M1RW | \
236 COH901318_CX_CTRL_TCP_DISABLE | \
237 COH901318_CX_CTRL_TC_IRQ_DISABLE | \
238 COH901318_CX_CTRL_HSP_DISABLE | \
239 COH901318_CX_CTRL_HSS_DISABLE | \
240 COH901318_CX_CTRL_DDMA_LEGACY | \
241 COH901318_CX_CTRL_PRDD_SOURCE)
242 #define flags_memcpy_lli (COH901318_CX_CTRL_TC_ENABLE | \
243 COH901318_CX_CTRL_BURST_COUNT_32_BYTES | \
244 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS | \
245 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE | \
246 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS | \
247 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE | \
248 COH901318_CX_CTRL_MASTER_MODE_M1RW | \
249 COH901318_CX_CTRL_TCP_DISABLE | \
250 COH901318_CX_CTRL_TC_IRQ_DISABLE | \
251 COH901318_CX_CTRL_HSP_DISABLE | \
252 COH901318_CX_CTRL_HSS_DISABLE | \
253 COH901318_CX_CTRL_DDMA_LEGACY | \
254 COH901318_CX_CTRL_PRDD_SOURCE)
255 #define flags_memcpy_lli_last (COH901318_CX_CTRL_TC_ENABLE | \
256 COH901318_CX_CTRL_BURST_COUNT_32_BYTES | \
257 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS | \
258 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE | \
259 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS | \
260 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE | \
261 COH901318_CX_CTRL_MASTER_MODE_M1RW | \
262 COH901318_CX_CTRL_TCP_DISABLE | \
263 COH901318_CX_CTRL_TC_IRQ_ENABLE | \
264 COH901318_CX_CTRL_HSP_DISABLE | \
265 COH901318_CX_CTRL_HSS_DISABLE | \
266 COH901318_CX_CTRL_DDMA_LEGACY | \
267 COH901318_CX_CTRL_PRDD_SOURCE)
268
269 static const struct coh_dma_channel chan_config[U300_DMA_CHANNELS] = {
270 {
271 .number = U300_DMA_MSL_TX_0,
272 .name = "MSL TX 0",
273 .priority_high = 0,
274 },
275 {
276 .number = U300_DMA_MSL_TX_1,
277 .name = "MSL TX 1",
278 .priority_high = 0,
279 .param.config = COH901318_CX_CFG_CH_DISABLE |
280 COH901318_CX_CFG_LCR_DISABLE |
281 COH901318_CX_CFG_TC_IRQ_ENABLE |
282 COH901318_CX_CFG_BE_IRQ_ENABLE,
283 .param.ctrl_lli_chained = 0 |
284 COH901318_CX_CTRL_TC_ENABLE |
285 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
286 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
287 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
288 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
289 COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
290 COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
291 COH901318_CX_CTRL_TCP_DISABLE |
292 COH901318_CX_CTRL_TC_IRQ_DISABLE |
293 COH901318_CX_CTRL_HSP_ENABLE |
294 COH901318_CX_CTRL_HSS_DISABLE |
295 COH901318_CX_CTRL_DDMA_LEGACY |
296 COH901318_CX_CTRL_PRDD_SOURCE,
297 .param.ctrl_lli = 0 |
298 COH901318_CX_CTRL_TC_ENABLE |
299 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
300 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
301 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
302 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
303 COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
304 COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
305 COH901318_CX_CTRL_TCP_ENABLE |
306 COH901318_CX_CTRL_TC_IRQ_DISABLE |
307 COH901318_CX_CTRL_HSP_ENABLE |
308 COH901318_CX_CTRL_HSS_DISABLE |
309 COH901318_CX_CTRL_DDMA_LEGACY |
310 COH901318_CX_CTRL_PRDD_SOURCE,
311 .param.ctrl_lli_last = 0 |
312 COH901318_CX_CTRL_TC_ENABLE |
313 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
314 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
315 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
316 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
317 COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
318 COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
319 COH901318_CX_CTRL_TCP_ENABLE |
320 COH901318_CX_CTRL_TC_IRQ_ENABLE |
321 COH901318_CX_CTRL_HSP_ENABLE |
322 COH901318_CX_CTRL_HSS_DISABLE |
323 COH901318_CX_CTRL_DDMA_LEGACY |
324 COH901318_CX_CTRL_PRDD_SOURCE,
325 },
326 {
327 .number = U300_DMA_MSL_TX_2,
328 .name = "MSL TX 2",
329 .priority_high = 0,
330 .param.config = COH901318_CX_CFG_CH_DISABLE |
331 COH901318_CX_CFG_LCR_DISABLE |
332 COH901318_CX_CFG_TC_IRQ_ENABLE |
333 COH901318_CX_CFG_BE_IRQ_ENABLE,
334 .param.ctrl_lli_chained = 0 |
335 COH901318_CX_CTRL_TC_ENABLE |
336 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
337 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
338 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
339 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
340 COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
341 COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
342 COH901318_CX_CTRL_TCP_DISABLE |
343 COH901318_CX_CTRL_TC_IRQ_DISABLE |
344 COH901318_CX_CTRL_HSP_ENABLE |
345 COH901318_CX_CTRL_HSS_DISABLE |
346 COH901318_CX_CTRL_DDMA_LEGACY |
347 COH901318_CX_CTRL_PRDD_SOURCE,
348 .param.ctrl_lli = 0 |
349 COH901318_CX_CTRL_TC_ENABLE |
350 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
351 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
352 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
353 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
354 COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
355 COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
356 COH901318_CX_CTRL_TCP_ENABLE |
357 COH901318_CX_CTRL_TC_IRQ_DISABLE |
358 COH901318_CX_CTRL_HSP_ENABLE |
359 COH901318_CX_CTRL_HSS_DISABLE |
360 COH901318_CX_CTRL_DDMA_LEGACY |
361 COH901318_CX_CTRL_PRDD_SOURCE,
362 .param.ctrl_lli_last = 0 |
363 COH901318_CX_CTRL_TC_ENABLE |
364 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
365 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
366 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
367 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
368 COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
369 COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
370 COH901318_CX_CTRL_TCP_ENABLE |
371 COH901318_CX_CTRL_TC_IRQ_ENABLE |
372 COH901318_CX_CTRL_HSP_ENABLE |
373 COH901318_CX_CTRL_HSS_DISABLE |
374 COH901318_CX_CTRL_DDMA_LEGACY |
375 COH901318_CX_CTRL_PRDD_SOURCE,
376 .desc_nbr_max = 10,
377 },
378 {
379 .number = U300_DMA_MSL_TX_3,
380 .name = "MSL TX 3",
381 .priority_high = 0,
382 .param.config = COH901318_CX_CFG_CH_DISABLE |
383 COH901318_CX_CFG_LCR_DISABLE |
384 COH901318_CX_CFG_TC_IRQ_ENABLE |
385 COH901318_CX_CFG_BE_IRQ_ENABLE,
386 .param.ctrl_lli_chained = 0 |
387 COH901318_CX_CTRL_TC_ENABLE |
388 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
389 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
390 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
391 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
392 COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
393 COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
394 COH901318_CX_CTRL_TCP_DISABLE |
395 COH901318_CX_CTRL_TC_IRQ_DISABLE |
396 COH901318_CX_CTRL_HSP_ENABLE |
397 COH901318_CX_CTRL_HSS_DISABLE |
398 COH901318_CX_CTRL_DDMA_LEGACY |
399 COH901318_CX_CTRL_PRDD_SOURCE,
400 .param.ctrl_lli = 0 |
401 COH901318_CX_CTRL_TC_ENABLE |
402 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
403 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
404 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
405 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
406 COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
407 COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
408 COH901318_CX_CTRL_TCP_ENABLE |
409 COH901318_CX_CTRL_TC_IRQ_DISABLE |
410 COH901318_CX_CTRL_HSP_ENABLE |
411 COH901318_CX_CTRL_HSS_DISABLE |
412 COH901318_CX_CTRL_DDMA_LEGACY |
413 COH901318_CX_CTRL_PRDD_SOURCE,
414 .param.ctrl_lli_last = 0 |
415 COH901318_CX_CTRL_TC_ENABLE |
416 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
417 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
418 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
419 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
420 COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
421 COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
422 COH901318_CX_CTRL_TCP_ENABLE |
423 COH901318_CX_CTRL_TC_IRQ_ENABLE |
424 COH901318_CX_CTRL_HSP_ENABLE |
425 COH901318_CX_CTRL_HSS_DISABLE |
426 COH901318_CX_CTRL_DDMA_LEGACY |
427 COH901318_CX_CTRL_PRDD_SOURCE,
428 },
429 {
430 .number = U300_DMA_MSL_TX_4,
431 .name = "MSL TX 4",
432 .priority_high = 0,
433 .param.config = COH901318_CX_CFG_CH_DISABLE |
434 COH901318_CX_CFG_LCR_DISABLE |
435 COH901318_CX_CFG_TC_IRQ_ENABLE |
436 COH901318_CX_CFG_BE_IRQ_ENABLE,
437 .param.ctrl_lli_chained = 0 |
438 COH901318_CX_CTRL_TC_ENABLE |
439 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
440 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
441 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
442 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
443 COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
444 COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
445 COH901318_CX_CTRL_TCP_DISABLE |
446 COH901318_CX_CTRL_TC_IRQ_DISABLE |
447 COH901318_CX_CTRL_HSP_ENABLE |
448 COH901318_CX_CTRL_HSS_DISABLE |
449 COH901318_CX_CTRL_DDMA_LEGACY |
450 COH901318_CX_CTRL_PRDD_SOURCE,
451 .param.ctrl_lli = 0 |
452 COH901318_CX_CTRL_TC_ENABLE |
453 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
454 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
455 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
456 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
457 COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
458 COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
459 COH901318_CX_CTRL_TCP_ENABLE |
460 COH901318_CX_CTRL_TC_IRQ_DISABLE |
461 COH901318_CX_CTRL_HSP_ENABLE |
462 COH901318_CX_CTRL_HSS_DISABLE |
463 COH901318_CX_CTRL_DDMA_LEGACY |
464 COH901318_CX_CTRL_PRDD_SOURCE,
465 .param.ctrl_lli_last = 0 |
466 COH901318_CX_CTRL_TC_ENABLE |
467 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
468 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
469 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
470 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
471 COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
472 COH901318_CX_CTRL_MASTER_MODE_M1R_M2W |
473 COH901318_CX_CTRL_TCP_ENABLE |
474 COH901318_CX_CTRL_TC_IRQ_ENABLE |
475 COH901318_CX_CTRL_HSP_ENABLE |
476 COH901318_CX_CTRL_HSS_DISABLE |
477 COH901318_CX_CTRL_DDMA_LEGACY |
478 COH901318_CX_CTRL_PRDD_SOURCE,
479 },
480 {
481 .number = U300_DMA_MSL_TX_5,
482 .name = "MSL TX 5",
483 .priority_high = 0,
484 },
485 {
486 .number = U300_DMA_MSL_TX_6,
487 .name = "MSL TX 6",
488 .priority_high = 0,
489 },
490 {
491 .number = U300_DMA_MSL_RX_0,
492 .name = "MSL RX 0",
493 .priority_high = 0,
494 },
495 {
496 .number = U300_DMA_MSL_RX_1,
497 .name = "MSL RX 1",
498 .priority_high = 0,
499 .param.config = COH901318_CX_CFG_CH_DISABLE |
500 COH901318_CX_CFG_LCR_DISABLE |
501 COH901318_CX_CFG_TC_IRQ_ENABLE |
502 COH901318_CX_CFG_BE_IRQ_ENABLE,
503 .param.ctrl_lli_chained = 0 |
504 COH901318_CX_CTRL_TC_ENABLE |
505 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
506 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
507 COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
508 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
509 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
510 COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
511 COH901318_CX_CTRL_TCP_DISABLE |
512 COH901318_CX_CTRL_TC_IRQ_DISABLE |
513 COH901318_CX_CTRL_HSP_ENABLE |
514 COH901318_CX_CTRL_HSS_DISABLE |
515 COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
516 COH901318_CX_CTRL_PRDD_DEST,
517 .param.ctrl_lli = 0,
518 .param.ctrl_lli_last = 0 |
519 COH901318_CX_CTRL_TC_ENABLE |
520 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
521 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
522 COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
523 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
524 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
525 COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
526 COH901318_CX_CTRL_TCP_DISABLE |
527 COH901318_CX_CTRL_TC_IRQ_ENABLE |
528 COH901318_CX_CTRL_HSP_ENABLE |
529 COH901318_CX_CTRL_HSS_DISABLE |
530 COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
531 COH901318_CX_CTRL_PRDD_DEST,
532 },
533 {
534 .number = U300_DMA_MSL_RX_2,
535 .name = "MSL RX 2",
536 .priority_high = 0,
537 .param.config = COH901318_CX_CFG_CH_DISABLE |
538 COH901318_CX_CFG_LCR_DISABLE |
539 COH901318_CX_CFG_TC_IRQ_ENABLE |
540 COH901318_CX_CFG_BE_IRQ_ENABLE,
541 .param.ctrl_lli_chained = 0 |
542 COH901318_CX_CTRL_TC_ENABLE |
543 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
544 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
545 COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
546 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
547 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
548 COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
549 COH901318_CX_CTRL_TCP_DISABLE |
550 COH901318_CX_CTRL_TC_IRQ_DISABLE |
551 COH901318_CX_CTRL_HSP_ENABLE |
552 COH901318_CX_CTRL_HSS_DISABLE |
553 COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
554 COH901318_CX_CTRL_PRDD_DEST,
555 .param.ctrl_lli = 0 |
556 COH901318_CX_CTRL_TC_ENABLE |
557 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
558 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
559 COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
560 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
561 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
562 COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
563 COH901318_CX_CTRL_TCP_DISABLE |
564 COH901318_CX_CTRL_TC_IRQ_ENABLE |
565 COH901318_CX_CTRL_HSP_ENABLE |
566 COH901318_CX_CTRL_HSS_DISABLE |
567 COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
568 COH901318_CX_CTRL_PRDD_DEST,
569 .param.ctrl_lli_last = 0 |
570 COH901318_CX_CTRL_TC_ENABLE |
571 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
572 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
573 COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
574 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
575 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
576 COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
577 COH901318_CX_CTRL_TCP_DISABLE |
578 COH901318_CX_CTRL_TC_IRQ_ENABLE |
579 COH901318_CX_CTRL_HSP_ENABLE |
580 COH901318_CX_CTRL_HSS_DISABLE |
581 COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
582 COH901318_CX_CTRL_PRDD_DEST,
583 },
584 {
585 .number = U300_DMA_MSL_RX_3,
586 .name = "MSL RX 3",
587 .priority_high = 0,
588 .param.config = COH901318_CX_CFG_CH_DISABLE |
589 COH901318_CX_CFG_LCR_DISABLE |
590 COH901318_CX_CFG_TC_IRQ_ENABLE |
591 COH901318_CX_CFG_BE_IRQ_ENABLE,
592 .param.ctrl_lli_chained = 0 |
593 COH901318_CX_CTRL_TC_ENABLE |
594 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
595 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
596 COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
597 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
598 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
599 COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
600 COH901318_CX_CTRL_TCP_DISABLE |
601 COH901318_CX_CTRL_TC_IRQ_DISABLE |
602 COH901318_CX_CTRL_HSP_ENABLE |
603 COH901318_CX_CTRL_HSS_DISABLE |
604 COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
605 COH901318_CX_CTRL_PRDD_DEST,
606 .param.ctrl_lli = 0 |
607 COH901318_CX_CTRL_TC_ENABLE |
608 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
609 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
610 COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
611 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
612 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
613 COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
614 COH901318_CX_CTRL_TCP_DISABLE |
615 COH901318_CX_CTRL_TC_IRQ_ENABLE |
616 COH901318_CX_CTRL_HSP_ENABLE |
617 COH901318_CX_CTRL_HSS_DISABLE |
618 COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
619 COH901318_CX_CTRL_PRDD_DEST,
620 .param.ctrl_lli_last = 0 |
621 COH901318_CX_CTRL_TC_ENABLE |
622 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
623 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
624 COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
625 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
626 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
627 COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
628 COH901318_CX_CTRL_TCP_DISABLE |
629 COH901318_CX_CTRL_TC_IRQ_ENABLE |
630 COH901318_CX_CTRL_HSP_ENABLE |
631 COH901318_CX_CTRL_HSS_DISABLE |
632 COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
633 COH901318_CX_CTRL_PRDD_DEST,
634 },
635 {
636 .number = U300_DMA_MSL_RX_4,
637 .name = "MSL RX 4",
638 .priority_high = 0,
639 .param.config = COH901318_CX_CFG_CH_DISABLE |
640 COH901318_CX_CFG_LCR_DISABLE |
641 COH901318_CX_CFG_TC_IRQ_ENABLE |
642 COH901318_CX_CFG_BE_IRQ_ENABLE,
643 .param.ctrl_lli_chained = 0 |
644 COH901318_CX_CTRL_TC_ENABLE |
645 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
646 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
647 COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
648 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
649 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
650 COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
651 COH901318_CX_CTRL_TCP_DISABLE |
652 COH901318_CX_CTRL_TC_IRQ_DISABLE |
653 COH901318_CX_CTRL_HSP_ENABLE |
654 COH901318_CX_CTRL_HSS_DISABLE |
655 COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
656 COH901318_CX_CTRL_PRDD_DEST,
657 .param.ctrl_lli = 0 |
658 COH901318_CX_CTRL_TC_ENABLE |
659 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
660 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
661 COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
662 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
663 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
664 COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
665 COH901318_CX_CTRL_TCP_DISABLE |
666 COH901318_CX_CTRL_TC_IRQ_ENABLE |
667 COH901318_CX_CTRL_HSP_ENABLE |
668 COH901318_CX_CTRL_HSS_DISABLE |
669 COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
670 COH901318_CX_CTRL_PRDD_DEST,
671 .param.ctrl_lli_last = 0 |
672 COH901318_CX_CTRL_TC_ENABLE |
673 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
674 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
675 COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
676 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
677 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
678 COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
679 COH901318_CX_CTRL_TCP_DISABLE |
680 COH901318_CX_CTRL_TC_IRQ_ENABLE |
681 COH901318_CX_CTRL_HSP_ENABLE |
682 COH901318_CX_CTRL_HSS_DISABLE |
683 COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
684 COH901318_CX_CTRL_PRDD_DEST,
685 },
686 {
687 .number = U300_DMA_MSL_RX_5,
688 .name = "MSL RX 5",
689 .priority_high = 0,
690 .param.config = COH901318_CX_CFG_CH_DISABLE |
691 COH901318_CX_CFG_LCR_DISABLE |
692 COH901318_CX_CFG_TC_IRQ_ENABLE |
693 COH901318_CX_CFG_BE_IRQ_ENABLE,
694 .param.ctrl_lli_chained = 0 |
695 COH901318_CX_CTRL_TC_ENABLE |
696 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
697 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
698 COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
699 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
700 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
701 COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
702 COH901318_CX_CTRL_TCP_DISABLE |
703 COH901318_CX_CTRL_TC_IRQ_DISABLE |
704 COH901318_CX_CTRL_HSP_ENABLE |
705 COH901318_CX_CTRL_HSS_DISABLE |
706 COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
707 COH901318_CX_CTRL_PRDD_DEST,
708 .param.ctrl_lli = 0 |
709 COH901318_CX_CTRL_TC_ENABLE |
710 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
711 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
712 COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
713 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
714 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
715 COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
716 COH901318_CX_CTRL_TCP_DISABLE |
717 COH901318_CX_CTRL_TC_IRQ_ENABLE |
718 COH901318_CX_CTRL_HSP_ENABLE |
719 COH901318_CX_CTRL_HSS_DISABLE |
720 COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
721 COH901318_CX_CTRL_PRDD_DEST,
722 .param.ctrl_lli_last = 0 |
723 COH901318_CX_CTRL_TC_ENABLE |
724 COH901318_CX_CTRL_BURST_COUNT_32_BYTES |
725 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
726 COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
727 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
728 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
729 COH901318_CX_CTRL_MASTER_MODE_M2R_M1W |
730 COH901318_CX_CTRL_TCP_DISABLE |
731 COH901318_CX_CTRL_TC_IRQ_ENABLE |
732 COH901318_CX_CTRL_HSP_ENABLE |
733 COH901318_CX_CTRL_HSS_DISABLE |
734 COH901318_CX_CTRL_DDMA_DEMAND_DMA1 |
735 COH901318_CX_CTRL_PRDD_DEST,
736 },
737 {
738 .number = U300_DMA_MSL_RX_6,
739 .name = "MSL RX 6",
740 .priority_high = 0,
741 },
742 /*
743 * Don't set up device address, burst count or size of src
744 * or dst bus for this peripheral - handled by PrimeCell
745 * DMA extension.
746 */
747 {
748 .number = U300_DMA_MMCSD_RX_TX,
749 .name = "MMCSD RX TX",
750 .priority_high = 0,
751 .param.config = COH901318_CX_CFG_CH_DISABLE |
752 COH901318_CX_CFG_LCR_DISABLE |
753 COH901318_CX_CFG_TC_IRQ_ENABLE |
754 COH901318_CX_CFG_BE_IRQ_ENABLE,
755 .param.ctrl_lli_chained = 0 |
756 COH901318_CX_CTRL_TC_ENABLE |
757 COH901318_CX_CTRL_MASTER_MODE_M1RW |
758 COH901318_CX_CTRL_TCP_ENABLE |
759 COH901318_CX_CTRL_TC_IRQ_DISABLE |
760 COH901318_CX_CTRL_HSP_ENABLE |
761 COH901318_CX_CTRL_HSS_DISABLE |
762 COH901318_CX_CTRL_DDMA_LEGACY,
763 .param.ctrl_lli = 0 |
764 COH901318_CX_CTRL_TC_ENABLE |
765 COH901318_CX_CTRL_MASTER_MODE_M1RW |
766 COH901318_CX_CTRL_TCP_ENABLE |
767 COH901318_CX_CTRL_TC_IRQ_DISABLE |
768 COH901318_CX_CTRL_HSP_ENABLE |
769 COH901318_CX_CTRL_HSS_DISABLE |
770 COH901318_CX_CTRL_DDMA_LEGACY,
771 .param.ctrl_lli_last = 0 |
772 COH901318_CX_CTRL_TC_ENABLE |
773 COH901318_CX_CTRL_MASTER_MODE_M1RW |
774 COH901318_CX_CTRL_TCP_DISABLE |
775 COH901318_CX_CTRL_TC_IRQ_ENABLE |
776 COH901318_CX_CTRL_HSP_ENABLE |
777 COH901318_CX_CTRL_HSS_DISABLE |
778 COH901318_CX_CTRL_DDMA_LEGACY,
779
780 },
781 {
782 .number = U300_DMA_MSPRO_TX,
783 .name = "MSPRO TX",
784 .priority_high = 0,
785 },
786 {
787 .number = U300_DMA_MSPRO_RX,
788 .name = "MSPRO RX",
789 .priority_high = 0,
790 },
791 /*
792 * Don't set up device address, burst count or size of src
793 * or dst bus for this peripheral - handled by PrimeCell
794 * DMA extension.
795 */
796 {
797 .number = U300_DMA_UART0_TX,
798 .name = "UART0 TX",
799 .priority_high = 0,
800 .param.config = COH901318_CX_CFG_CH_DISABLE |
801 COH901318_CX_CFG_LCR_DISABLE |
802 COH901318_CX_CFG_TC_IRQ_ENABLE |
803 COH901318_CX_CFG_BE_IRQ_ENABLE,
804 .param.ctrl_lli_chained = 0 |
805 COH901318_CX_CTRL_TC_ENABLE |
806 COH901318_CX_CTRL_MASTER_MODE_M1RW |
807 COH901318_CX_CTRL_TCP_ENABLE |
808 COH901318_CX_CTRL_TC_IRQ_DISABLE |
809 COH901318_CX_CTRL_HSP_ENABLE |
810 COH901318_CX_CTRL_HSS_DISABLE |
811 COH901318_CX_CTRL_DDMA_LEGACY,
812 .param.ctrl_lli = 0 |
813 COH901318_CX_CTRL_TC_ENABLE |
814 COH901318_CX_CTRL_MASTER_MODE_M1RW |
815 COH901318_CX_CTRL_TCP_ENABLE |
816 COH901318_CX_CTRL_TC_IRQ_ENABLE |
817 COH901318_CX_CTRL_HSP_ENABLE |
818 COH901318_CX_CTRL_HSS_DISABLE |
819 COH901318_CX_CTRL_DDMA_LEGACY,
820 .param.ctrl_lli_last = 0 |
821 COH901318_CX_CTRL_TC_ENABLE |
822 COH901318_CX_CTRL_MASTER_MODE_M1RW |
823 COH901318_CX_CTRL_TCP_ENABLE |
824 COH901318_CX_CTRL_TC_IRQ_ENABLE |
825 COH901318_CX_CTRL_HSP_ENABLE |
826 COH901318_CX_CTRL_HSS_DISABLE |
827 COH901318_CX_CTRL_DDMA_LEGACY,
828 },
829 {
830 .number = U300_DMA_UART0_RX,
831 .name = "UART0 RX",
832 .priority_high = 0,
833 .param.config = COH901318_CX_CFG_CH_DISABLE |
834 COH901318_CX_CFG_LCR_DISABLE |
835 COH901318_CX_CFG_TC_IRQ_ENABLE |
836 COH901318_CX_CFG_BE_IRQ_ENABLE,
837 .param.ctrl_lli_chained = 0 |
838 COH901318_CX_CTRL_TC_ENABLE |
839 COH901318_CX_CTRL_MASTER_MODE_M1RW |
840 COH901318_CX_CTRL_TCP_ENABLE |
841 COH901318_CX_CTRL_TC_IRQ_DISABLE |
842 COH901318_CX_CTRL_HSP_ENABLE |
843 COH901318_CX_CTRL_HSS_DISABLE |
844 COH901318_CX_CTRL_DDMA_LEGACY,
845 .param.ctrl_lli = 0 |
846 COH901318_CX_CTRL_TC_ENABLE |
847 COH901318_CX_CTRL_MASTER_MODE_M1RW |
848 COH901318_CX_CTRL_TCP_ENABLE |
849 COH901318_CX_CTRL_TC_IRQ_ENABLE |
850 COH901318_CX_CTRL_HSP_ENABLE |
851 COH901318_CX_CTRL_HSS_DISABLE |
852 COH901318_CX_CTRL_DDMA_LEGACY,
853 .param.ctrl_lli_last = 0 |
854 COH901318_CX_CTRL_TC_ENABLE |
855 COH901318_CX_CTRL_MASTER_MODE_M1RW |
856 COH901318_CX_CTRL_TCP_ENABLE |
857 COH901318_CX_CTRL_TC_IRQ_ENABLE |
858 COH901318_CX_CTRL_HSP_ENABLE |
859 COH901318_CX_CTRL_HSS_DISABLE |
860 COH901318_CX_CTRL_DDMA_LEGACY,
861 },
862 {
863 .number = U300_DMA_APEX_TX,
864 .name = "APEX TX",
865 .priority_high = 0,
866 },
867 {
868 .number = U300_DMA_APEX_RX,
869 .name = "APEX RX",
870 .priority_high = 0,
871 },
872 {
873 .number = U300_DMA_PCM_I2S0_TX,
874 .name = "PCM I2S0 TX",
875 .priority_high = 1,
876 .param.config = COH901318_CX_CFG_CH_DISABLE |
877 COH901318_CX_CFG_LCR_DISABLE |
878 COH901318_CX_CFG_TC_IRQ_ENABLE |
879 COH901318_CX_CFG_BE_IRQ_ENABLE,
880 .param.ctrl_lli_chained = 0 |
881 COH901318_CX_CTRL_TC_ENABLE |
882 COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
883 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
884 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
885 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
886 COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
887 COH901318_CX_CTRL_MASTER_MODE_M1RW |
888 COH901318_CX_CTRL_TCP_DISABLE |
889 COH901318_CX_CTRL_TC_IRQ_DISABLE |
890 COH901318_CX_CTRL_HSP_ENABLE |
891 COH901318_CX_CTRL_HSS_DISABLE |
892 COH901318_CX_CTRL_DDMA_LEGACY |
893 COH901318_CX_CTRL_PRDD_SOURCE,
894 .param.ctrl_lli = 0 |
895 COH901318_CX_CTRL_TC_ENABLE |
896 COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
897 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
898 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
899 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
900 COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
901 COH901318_CX_CTRL_MASTER_MODE_M1RW |
902 COH901318_CX_CTRL_TCP_ENABLE |
903 COH901318_CX_CTRL_TC_IRQ_DISABLE |
904 COH901318_CX_CTRL_HSP_ENABLE |
905 COH901318_CX_CTRL_HSS_DISABLE |
906 COH901318_CX_CTRL_DDMA_LEGACY |
907 COH901318_CX_CTRL_PRDD_SOURCE,
908 .param.ctrl_lli_last = 0 |
909 COH901318_CX_CTRL_TC_ENABLE |
910 COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
911 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
912 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
913 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
914 COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
915 COH901318_CX_CTRL_MASTER_MODE_M1RW |
916 COH901318_CX_CTRL_TCP_ENABLE |
917 COH901318_CX_CTRL_TC_IRQ_DISABLE |
918 COH901318_CX_CTRL_HSP_ENABLE |
919 COH901318_CX_CTRL_HSS_DISABLE |
920 COH901318_CX_CTRL_DDMA_LEGACY |
921 COH901318_CX_CTRL_PRDD_SOURCE,
922 },
923 {
924 .number = U300_DMA_PCM_I2S0_RX,
925 .name = "PCM I2S0 RX",
926 .priority_high = 1,
927 .param.config = COH901318_CX_CFG_CH_DISABLE |
928 COH901318_CX_CFG_LCR_DISABLE |
929 COH901318_CX_CFG_TC_IRQ_ENABLE |
930 COH901318_CX_CFG_BE_IRQ_ENABLE,
931 .param.ctrl_lli_chained = 0 |
932 COH901318_CX_CTRL_TC_ENABLE |
933 COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
934 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
935 COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
936 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
937 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
938 COH901318_CX_CTRL_MASTER_MODE_M1RW |
939 COH901318_CX_CTRL_TCP_DISABLE |
940 COH901318_CX_CTRL_TC_IRQ_DISABLE |
941 COH901318_CX_CTRL_HSP_ENABLE |
942 COH901318_CX_CTRL_HSS_DISABLE |
943 COH901318_CX_CTRL_DDMA_LEGACY |
944 COH901318_CX_CTRL_PRDD_DEST,
945 .param.ctrl_lli = 0 |
946 COH901318_CX_CTRL_TC_ENABLE |
947 COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
948 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
949 COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
950 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
951 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
952 COH901318_CX_CTRL_MASTER_MODE_M1RW |
953 COH901318_CX_CTRL_TCP_ENABLE |
954 COH901318_CX_CTRL_TC_IRQ_DISABLE |
955 COH901318_CX_CTRL_HSP_ENABLE |
956 COH901318_CX_CTRL_HSS_DISABLE |
957 COH901318_CX_CTRL_DDMA_LEGACY |
958 COH901318_CX_CTRL_PRDD_DEST,
959 .param.ctrl_lli_last = 0 |
960 COH901318_CX_CTRL_TC_ENABLE |
961 COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
962 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
963 COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
964 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
965 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
966 COH901318_CX_CTRL_MASTER_MODE_M1RW |
967 COH901318_CX_CTRL_TCP_ENABLE |
968 COH901318_CX_CTRL_TC_IRQ_ENABLE |
969 COH901318_CX_CTRL_HSP_ENABLE |
970 COH901318_CX_CTRL_HSS_DISABLE |
971 COH901318_CX_CTRL_DDMA_LEGACY |
972 COH901318_CX_CTRL_PRDD_DEST,
973 },
974 {
975 .number = U300_DMA_PCM_I2S1_TX,
976 .name = "PCM I2S1 TX",
977 .priority_high = 1,
978 .param.config = COH901318_CX_CFG_CH_DISABLE |
979 COH901318_CX_CFG_LCR_DISABLE |
980 COH901318_CX_CFG_TC_IRQ_ENABLE |
981 COH901318_CX_CFG_BE_IRQ_ENABLE,
982 .param.ctrl_lli_chained = 0 |
983 COH901318_CX_CTRL_TC_ENABLE |
984 COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
985 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
986 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
987 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
988 COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
989 COH901318_CX_CTRL_MASTER_MODE_M1RW |
990 COH901318_CX_CTRL_TCP_DISABLE |
991 COH901318_CX_CTRL_TC_IRQ_DISABLE |
992 COH901318_CX_CTRL_HSP_ENABLE |
993 COH901318_CX_CTRL_HSS_DISABLE |
994 COH901318_CX_CTRL_DDMA_LEGACY |
995 COH901318_CX_CTRL_PRDD_SOURCE,
996 .param.ctrl_lli = 0 |
997 COH901318_CX_CTRL_TC_ENABLE |
998 COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
999 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
1000 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
1001 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
1002 COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
1003 COH901318_CX_CTRL_MASTER_MODE_M1RW |
1004 COH901318_CX_CTRL_TCP_ENABLE |
1005 COH901318_CX_CTRL_TC_IRQ_DISABLE |
1006 COH901318_CX_CTRL_HSP_ENABLE |
1007 COH901318_CX_CTRL_HSS_DISABLE |
1008 COH901318_CX_CTRL_DDMA_LEGACY |
1009 COH901318_CX_CTRL_PRDD_SOURCE,
1010 .param.ctrl_lli_last = 0 |
1011 COH901318_CX_CTRL_TC_ENABLE |
1012 COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
1013 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
1014 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE |
1015 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
1016 COH901318_CX_CTRL_DST_ADDR_INC_DISABLE |
1017 COH901318_CX_CTRL_MASTER_MODE_M1RW |
1018 COH901318_CX_CTRL_TCP_ENABLE |
1019 COH901318_CX_CTRL_TC_IRQ_ENABLE |
1020 COH901318_CX_CTRL_HSP_ENABLE |
1021 COH901318_CX_CTRL_HSS_DISABLE |
1022 COH901318_CX_CTRL_DDMA_LEGACY |
1023 COH901318_CX_CTRL_PRDD_SOURCE,
1024 },
1025 {
1026 .number = U300_DMA_PCM_I2S1_RX,
1027 .name = "PCM I2S1 RX",
1028 .priority_high = 1,
1029 .param.config = COH901318_CX_CFG_CH_DISABLE |
1030 COH901318_CX_CFG_LCR_DISABLE |
1031 COH901318_CX_CFG_TC_IRQ_ENABLE |
1032 COH901318_CX_CFG_BE_IRQ_ENABLE,
1033 .param.ctrl_lli_chained = 0 |
1034 COH901318_CX_CTRL_TC_ENABLE |
1035 COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
1036 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
1037 COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
1038 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
1039 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
1040 COH901318_CX_CTRL_MASTER_MODE_M1RW |
1041 COH901318_CX_CTRL_TCP_DISABLE |
1042 COH901318_CX_CTRL_TC_IRQ_DISABLE |
1043 COH901318_CX_CTRL_HSP_ENABLE |
1044 COH901318_CX_CTRL_HSS_DISABLE |
1045 COH901318_CX_CTRL_DDMA_LEGACY |
1046 COH901318_CX_CTRL_PRDD_DEST,
1047 .param.ctrl_lli = 0 |
1048 COH901318_CX_CTRL_TC_ENABLE |
1049 COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
1050 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
1051 COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
1052 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
1053 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
1054 COH901318_CX_CTRL_MASTER_MODE_M1RW |
1055 COH901318_CX_CTRL_TCP_ENABLE |
1056 COH901318_CX_CTRL_TC_IRQ_DISABLE |
1057 COH901318_CX_CTRL_HSP_ENABLE |
1058 COH901318_CX_CTRL_HSS_DISABLE |
1059 COH901318_CX_CTRL_DDMA_LEGACY |
1060 COH901318_CX_CTRL_PRDD_DEST,
1061 .param.ctrl_lli_last = 0 |
1062 COH901318_CX_CTRL_TC_ENABLE |
1063 COH901318_CX_CTRL_BURST_COUNT_16_BYTES |
1064 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
1065 COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE |
1066 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS |
1067 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE |
1068 COH901318_CX_CTRL_MASTER_MODE_M1RW |
1069 COH901318_CX_CTRL_TCP_ENABLE |
1070 COH901318_CX_CTRL_TC_IRQ_ENABLE |
1071 COH901318_CX_CTRL_HSP_ENABLE |
1072 COH901318_CX_CTRL_HSS_DISABLE |
1073 COH901318_CX_CTRL_DDMA_LEGACY |
1074 COH901318_CX_CTRL_PRDD_DEST,
1075 },
1076 {
1077 .number = U300_DMA_XGAM_CDI,
1078 .name = "XGAM CDI",
1079 .priority_high = 0,
1080 },
1081 {
1082 .number = U300_DMA_XGAM_PDI,
1083 .name = "XGAM PDI",
1084 .priority_high = 0,
1085 },
1086 /*
1087 * Don't set up device address, burst count or size of src
1088 * or dst bus for this peripheral - handled by PrimeCell
1089 * DMA extension.
1090 */
1091 {
1092 .number = U300_DMA_SPI_TX,
1093 .name = "SPI TX",
1094 .priority_high = 0,
1095 .param.config = COH901318_CX_CFG_CH_DISABLE |
1096 COH901318_CX_CFG_LCR_DISABLE |
1097 COH901318_CX_CFG_TC_IRQ_ENABLE |
1098 COH901318_CX_CFG_BE_IRQ_ENABLE,
1099 .param.ctrl_lli_chained = 0 |
1100 COH901318_CX_CTRL_TC_ENABLE |
1101 COH901318_CX_CTRL_MASTER_MODE_M1RW |
1102 COH901318_CX_CTRL_TCP_DISABLE |
1103 COH901318_CX_CTRL_TC_IRQ_DISABLE |
1104 COH901318_CX_CTRL_HSP_ENABLE |
1105 COH901318_CX_CTRL_HSS_DISABLE |
1106 COH901318_CX_CTRL_DDMA_LEGACY,
1107 .param.ctrl_lli = 0 |
1108 COH901318_CX_CTRL_TC_ENABLE |
1109 COH901318_CX_CTRL_MASTER_MODE_M1RW |
1110 COH901318_CX_CTRL_TCP_DISABLE |
1111 COH901318_CX_CTRL_TC_IRQ_ENABLE |
1112 COH901318_CX_CTRL_HSP_ENABLE |
1113 COH901318_CX_CTRL_HSS_DISABLE |
1114 COH901318_CX_CTRL_DDMA_LEGACY,
1115 .param.ctrl_lli_last = 0 |
1116 COH901318_CX_CTRL_TC_ENABLE |
1117 COH901318_CX_CTRL_MASTER_MODE_M1RW |
1118 COH901318_CX_CTRL_TCP_DISABLE |
1119 COH901318_CX_CTRL_TC_IRQ_ENABLE |
1120 COH901318_CX_CTRL_HSP_ENABLE |
1121 COH901318_CX_CTRL_HSS_DISABLE |
1122 COH901318_CX_CTRL_DDMA_LEGACY,
1123 },
1124 {
1125 .number = U300_DMA_SPI_RX,
1126 .name = "SPI RX",
1127 .priority_high = 0,
1128 .param.config = COH901318_CX_CFG_CH_DISABLE |
1129 COH901318_CX_CFG_LCR_DISABLE |
1130 COH901318_CX_CFG_TC_IRQ_ENABLE |
1131 COH901318_CX_CFG_BE_IRQ_ENABLE,
1132 .param.ctrl_lli_chained = 0 |
1133 COH901318_CX_CTRL_TC_ENABLE |
1134 COH901318_CX_CTRL_MASTER_MODE_M1RW |
1135 COH901318_CX_CTRL_TCP_DISABLE |
1136 COH901318_CX_CTRL_TC_IRQ_DISABLE |
1137 COH901318_CX_CTRL_HSP_ENABLE |
1138 COH901318_CX_CTRL_HSS_DISABLE |
1139 COH901318_CX_CTRL_DDMA_LEGACY,
1140 .param.ctrl_lli = 0 |
1141 COH901318_CX_CTRL_TC_ENABLE |
1142 COH901318_CX_CTRL_MASTER_MODE_M1RW |
1143 COH901318_CX_CTRL_TCP_DISABLE |
1144 COH901318_CX_CTRL_TC_IRQ_ENABLE |
1145 COH901318_CX_CTRL_HSP_ENABLE |
1146 COH901318_CX_CTRL_HSS_DISABLE |
1147 COH901318_CX_CTRL_DDMA_LEGACY,
1148 .param.ctrl_lli_last = 0 |
1149 COH901318_CX_CTRL_TC_ENABLE |
1150 COH901318_CX_CTRL_MASTER_MODE_M1RW |
1151 COH901318_CX_CTRL_TCP_DISABLE |
1152 COH901318_CX_CTRL_TC_IRQ_ENABLE |
1153 COH901318_CX_CTRL_HSP_ENABLE |
1154 COH901318_CX_CTRL_HSS_DISABLE |
1155 COH901318_CX_CTRL_DDMA_LEGACY,
1156
1157 },
1158 {
1159 .number = U300_DMA_GENERAL_PURPOSE_0,
1160 .name = "GENERAL 00",
1161 .priority_high = 0,
1162
1163 .param.config = flags_memcpy_config,
1164 .param.ctrl_lli_chained = flags_memcpy_lli_chained,
1165 .param.ctrl_lli = flags_memcpy_lli,
1166 .param.ctrl_lli_last = flags_memcpy_lli_last,
1167 },
1168 {
1169 .number = U300_DMA_GENERAL_PURPOSE_1,
1170 .name = "GENERAL 01",
1171 .priority_high = 0,
1172
1173 .param.config = flags_memcpy_config,
1174 .param.ctrl_lli_chained = flags_memcpy_lli_chained,
1175 .param.ctrl_lli = flags_memcpy_lli,
1176 .param.ctrl_lli_last = flags_memcpy_lli_last,
1177 },
1178 {
1179 .number = U300_DMA_GENERAL_PURPOSE_2,
1180 .name = "GENERAL 02",
1181 .priority_high = 0,
1182
1183 .param.config = flags_memcpy_config,
1184 .param.ctrl_lli_chained = flags_memcpy_lli_chained,
1185 .param.ctrl_lli = flags_memcpy_lli,
1186 .param.ctrl_lli_last = flags_memcpy_lli_last,
1187 },
1188 {
1189 .number = U300_DMA_GENERAL_PURPOSE_3,
1190 .name = "GENERAL 03",
1191 .priority_high = 0,
1192
1193 .param.config = flags_memcpy_config,
1194 .param.ctrl_lli_chained = flags_memcpy_lli_chained,
1195 .param.ctrl_lli = flags_memcpy_lli,
1196 .param.ctrl_lli_last = flags_memcpy_lli_last,
1197 },
1198 {
1199 .number = U300_DMA_GENERAL_PURPOSE_4,
1200 .name = "GENERAL 04",
1201 .priority_high = 0,
1202
1203 .param.config = flags_memcpy_config,
1204 .param.ctrl_lli_chained = flags_memcpy_lli_chained,
1205 .param.ctrl_lli = flags_memcpy_lli,
1206 .param.ctrl_lli_last = flags_memcpy_lli_last,
1207 },
1208 {
1209 .number = U300_DMA_GENERAL_PURPOSE_5,
1210 .name = "GENERAL 05",
1211 .priority_high = 0,
1212
1213 .param.config = flags_memcpy_config,
1214 .param.ctrl_lli_chained = flags_memcpy_lli_chained,
1215 .param.ctrl_lli = flags_memcpy_lli,
1216 .param.ctrl_lli_last = flags_memcpy_lli_last,
1217 },
1218 {
1219 .number = U300_DMA_GENERAL_PURPOSE_6,
1220 .name = "GENERAL 06",
1221 .priority_high = 0,
1222
1223 .param.config = flags_memcpy_config,
1224 .param.ctrl_lli_chained = flags_memcpy_lli_chained,
1225 .param.ctrl_lli = flags_memcpy_lli,
1226 .param.ctrl_lli_last = flags_memcpy_lli_last,
1227 },
1228 {
1229 .number = U300_DMA_GENERAL_PURPOSE_7,
1230 .name = "GENERAL 07",
1231 .priority_high = 0,
1232
1233 .param.config = flags_memcpy_config,
1234 .param.ctrl_lli_chained = flags_memcpy_lli_chained,
1235 .param.ctrl_lli = flags_memcpy_lli,
1236 .param.ctrl_lli_last = flags_memcpy_lli_last,
1237 },
1238 {
1239 .number = U300_DMA_GENERAL_PURPOSE_8,
1240 .name = "GENERAL 08",
1241 .priority_high = 0,
1242
1243 .param.config = flags_memcpy_config,
1244 .param.ctrl_lli_chained = flags_memcpy_lli_chained,
1245 .param.ctrl_lli = flags_memcpy_lli,
1246 .param.ctrl_lli_last = flags_memcpy_lli_last,
1247 },
1248 {
1249 .number = U300_DMA_UART1_TX,
1250 .name = "UART1 TX",
1251 .priority_high = 0,
1252 },
1253 {
1254 .number = U300_DMA_UART1_RX,
1255 .name = "UART1 RX",
1256 .priority_high = 0,
1257 }
1258 };
1259
1260 #define COHC_2_DEV(cohc) (&cohc->chan.dev->device)
1261
1262 #ifdef VERBOSE_DEBUG
1263 #define COH_DBG(x) ({ if (1) x; 0; })
1264 #else
1265 #define COH_DBG(x) ({ if (0) x; 0; })
1266 #endif
1267
1268 struct coh901318_desc {
1269 struct dma_async_tx_descriptor desc;
1270 struct list_head node;
1271 struct scatterlist *sg;
1272 unsigned int sg_len;
1273 struct coh901318_lli *lli;
1274 enum dma_transfer_direction dir;
1275 unsigned long flags;
1276 u32 head_config;
1277 u32 head_ctrl;
1278 };
1279
1280 struct coh901318_base {
1281 struct device *dev;
1282 void __iomem *virtbase;
1283 unsigned int irq;
1284 struct coh901318_pool pool;
1285 struct powersave pm;
1286 struct dma_device dma_slave;
1287 struct dma_device dma_memcpy;
1288 struct coh901318_chan *chans;
1289 };
1290
1291 struct coh901318_chan {
1292 spinlock_t lock;
1293 int allocated;
1294 int id;
1295 int stopped;
1296
1297 struct work_struct free_work;
1298 struct dma_chan chan;
1299
1300 struct tasklet_struct tasklet;
1301
1302 struct list_head active;
1303 struct list_head queue;
1304 struct list_head free;
1305
1306 unsigned long nbr_active_done;
1307 unsigned long busy;
1308
1309 u32 addr;
1310 u32 ctrl;
1311
1312 struct coh901318_base *base;
1313 };
1314
1315 static void coh901318_list_print(struct coh901318_chan *cohc,
1316 struct coh901318_lli *lli)
1317 {
1318 struct coh901318_lli *l = lli;
1319 int i = 0;
1320
1321 while (l) {
1322 dev_vdbg(COHC_2_DEV(cohc), "i %d, lli %p, ctrl 0x%x, src %pad"
1323 ", dst %pad, link %pad virt_link_addr 0x%p\n",
1324 i, l, l->control, &l->src_addr, &l->dst_addr,
1325 &l->link_addr, l->virt_link_addr);
1326 i++;
1327 l = l->virt_link_addr;
1328 }
1329 }
1330
1331 #ifdef CONFIG_DEBUG_FS
1332
1333 #define COH901318_DEBUGFS_ASSIGN(x, y) (x = y)
1334
1335 static struct coh901318_base *debugfs_dma_base;
1336 static struct dentry *dma_dentry;
1337
1338 static ssize_t coh901318_debugfs_read(struct file *file, char __user *buf,
1339 size_t count, loff_t *f_pos)
1340 {
1341 u64 started_channels = debugfs_dma_base->pm.started_channels;
1342 int pool_count = debugfs_dma_base->pool.debugfs_pool_counter;
1343 char *dev_buf;
1344 char *tmp;
1345 int ret;
1346 int i;
1347
1348 dev_buf = kmalloc(4*1024, GFP_KERNEL);
1349 if (dev_buf == NULL)
1350 return -ENOMEM;
1351 tmp = dev_buf;
1352
1353 tmp += sprintf(tmp, "DMA -- enabled dma channels\n");
1354
1355 for (i = 0; i < U300_DMA_CHANNELS; i++) {
1356 if (started_channels & (1ULL << i))
1357 tmp += sprintf(tmp, "channel %d\n", i);
1358 }
1359
1360 tmp += sprintf(tmp, "Pool alloc nbr %d\n", pool_count);
1361
1362 ret = simple_read_from_buffer(buf, count, f_pos, dev_buf,
1363 tmp - dev_buf);
1364 kfree(dev_buf);
1365 return ret;
1366 }
1367
1368 static const struct file_operations coh901318_debugfs_status_operations = {
1369 .open = simple_open,
1370 .read = coh901318_debugfs_read,
1371 .llseek = default_llseek,
1372 };
1373
1374
1375 static int __init init_coh901318_debugfs(void)
1376 {
1377
1378 dma_dentry = debugfs_create_dir("dma", NULL);
1379
1380 (void) debugfs_create_file("status",
1381 S_IFREG | S_IRUGO,
1382 dma_dentry, NULL,
1383 &coh901318_debugfs_status_operations);
1384 return 0;
1385 }
1386
1387 static void __exit exit_coh901318_debugfs(void)
1388 {
1389 debugfs_remove_recursive(dma_dentry);
1390 }
1391
1392 module_init(init_coh901318_debugfs);
1393 module_exit(exit_coh901318_debugfs);
1394 #else
1395
1396 #define COH901318_DEBUGFS_ASSIGN(x, y)
1397
1398 #endif /* CONFIG_DEBUG_FS */
1399
1400 static inline struct coh901318_chan *to_coh901318_chan(struct dma_chan *chan)
1401 {
1402 return container_of(chan, struct coh901318_chan, chan);
1403 }
1404
1405 static inline const struct coh901318_params *
1406 cohc_chan_param(struct coh901318_chan *cohc)
1407 {
1408 return &chan_config[cohc->id].param;
1409 }
1410
1411 static inline const struct coh_dma_channel *
1412 cohc_chan_conf(struct coh901318_chan *cohc)
1413 {
1414 return &chan_config[cohc->id];
1415 }
1416
1417 static void enable_powersave(struct coh901318_chan *cohc)
1418 {
1419 unsigned long flags;
1420 struct powersave *pm = &cohc->base->pm;
1421
1422 spin_lock_irqsave(&pm->lock, flags);
1423
1424 pm->started_channels &= ~(1ULL << cohc->id);
1425
1426 spin_unlock_irqrestore(&pm->lock, flags);
1427 }
1428 static void disable_powersave(struct coh901318_chan *cohc)
1429 {
1430 unsigned long flags;
1431 struct powersave *pm = &cohc->base->pm;
1432
1433 spin_lock_irqsave(&pm->lock, flags);
1434
1435 pm->started_channels |= (1ULL << cohc->id);
1436
1437 spin_unlock_irqrestore(&pm->lock, flags);
1438 }
1439
1440 static inline int coh901318_set_ctrl(struct coh901318_chan *cohc, u32 control)
1441 {
1442 int channel = cohc->id;
1443 void __iomem *virtbase = cohc->base->virtbase;
1444
1445 writel(control,
1446 virtbase + COH901318_CX_CTRL +
1447 COH901318_CX_CTRL_SPACING * channel);
1448 return 0;
1449 }
1450
1451 static inline int coh901318_set_conf(struct coh901318_chan *cohc, u32 conf)
1452 {
1453 int channel = cohc->id;
1454 void __iomem *virtbase = cohc->base->virtbase;
1455
1456 writel(conf,
1457 virtbase + COH901318_CX_CFG +
1458 COH901318_CX_CFG_SPACING*channel);
1459 return 0;
1460 }
1461
1462
1463 static int coh901318_start(struct coh901318_chan *cohc)
1464 {
1465 u32 val;
1466 int channel = cohc->id;
1467 void __iomem *virtbase = cohc->base->virtbase;
1468
1469 disable_powersave(cohc);
1470
1471 val = readl(virtbase + COH901318_CX_CFG +
1472 COH901318_CX_CFG_SPACING * channel);
1473
1474 /* Enable channel */
1475 val |= COH901318_CX_CFG_CH_ENABLE;
1476 writel(val, virtbase + COH901318_CX_CFG +
1477 COH901318_CX_CFG_SPACING * channel);
1478
1479 return 0;
1480 }
1481
1482 static int coh901318_prep_linked_list(struct coh901318_chan *cohc,
1483 struct coh901318_lli *lli)
1484 {
1485 int channel = cohc->id;
1486 void __iomem *virtbase = cohc->base->virtbase;
1487
1488 BUG_ON(readl(virtbase + COH901318_CX_STAT +
1489 COH901318_CX_STAT_SPACING*channel) &
1490 COH901318_CX_STAT_ACTIVE);
1491
1492 writel(lli->src_addr,
1493 virtbase + COH901318_CX_SRC_ADDR +
1494 COH901318_CX_SRC_ADDR_SPACING * channel);
1495
1496 writel(lli->dst_addr, virtbase +
1497 COH901318_CX_DST_ADDR +
1498 COH901318_CX_DST_ADDR_SPACING * channel);
1499
1500 writel(lli->link_addr, virtbase + COH901318_CX_LNK_ADDR +
1501 COH901318_CX_LNK_ADDR_SPACING * channel);
1502
1503 writel(lli->control, virtbase + COH901318_CX_CTRL +
1504 COH901318_CX_CTRL_SPACING * channel);
1505
1506 return 0;
1507 }
1508
1509 static struct coh901318_desc *
1510 coh901318_desc_get(struct coh901318_chan *cohc)
1511 {
1512 struct coh901318_desc *desc;
1513
1514 if (list_empty(&cohc->free)) {
1515 /* alloc new desc because we're out of used ones
1516 * TODO: alloc a pile of descs instead of just one,
1517 * avoid many small allocations.
1518 */
1519 desc = kzalloc(sizeof(struct coh901318_desc), GFP_NOWAIT);
1520 if (desc == NULL)
1521 goto out;
1522 INIT_LIST_HEAD(&desc->node);
1523 dma_async_tx_descriptor_init(&desc->desc, &cohc->chan);
1524 } else {
1525 /* Reuse an old desc. */
1526 desc = list_first_entry(&cohc->free,
1527 struct coh901318_desc,
1528 node);
1529 list_del(&desc->node);
1530 /* Initialize it a bit so it's not insane */
1531 desc->sg = NULL;
1532 desc->sg_len = 0;
1533 desc->desc.callback = NULL;
1534 desc->desc.callback_param = NULL;
1535 }
1536
1537 out:
1538 return desc;
1539 }
1540
1541 static void
1542 coh901318_desc_free(struct coh901318_chan *cohc, struct coh901318_desc *cohd)
1543 {
1544 list_add_tail(&cohd->node, &cohc->free);
1545 }
1546
1547 /* call with irq lock held */
1548 static void
1549 coh901318_desc_submit(struct coh901318_chan *cohc, struct coh901318_desc *desc)
1550 {
1551 list_add_tail(&desc->node, &cohc->active);
1552 }
1553
1554 static struct coh901318_desc *
1555 coh901318_first_active_get(struct coh901318_chan *cohc)
1556 {
1557 return list_first_entry_or_null(&cohc->active, struct coh901318_desc,
1558 node);
1559 }
1560
1561 static void
1562 coh901318_desc_remove(struct coh901318_desc *cohd)
1563 {
1564 list_del(&cohd->node);
1565 }
1566
1567 static void
1568 coh901318_desc_queue(struct coh901318_chan *cohc, struct coh901318_desc *desc)
1569 {
1570 list_add_tail(&desc->node, &cohc->queue);
1571 }
1572
1573 static struct coh901318_desc *
1574 coh901318_first_queued(struct coh901318_chan *cohc)
1575 {
1576 return list_first_entry_or_null(&cohc->queue, struct coh901318_desc,
1577 node);
1578 }
1579
1580 static inline u32 coh901318_get_bytes_in_lli(struct coh901318_lli *in_lli)
1581 {
1582 struct coh901318_lli *lli = in_lli;
1583 u32 bytes = 0;
1584
1585 while (lli) {
1586 bytes += lli->control & COH901318_CX_CTRL_TC_VALUE_MASK;
1587 lli = lli->virt_link_addr;
1588 }
1589 return bytes;
1590 }
1591
1592 /*
1593 * Get the number of bytes left to transfer on this channel,
1594 * it is unwise to call this before stopping the channel for
1595 * absolute measures, but for a rough guess you can still call
1596 * it.
1597 */
1598 static u32 coh901318_get_bytes_left(struct dma_chan *chan)
1599 {
1600 struct coh901318_chan *cohc = to_coh901318_chan(chan);
1601 struct coh901318_desc *cohd;
1602 struct list_head *pos;
1603 unsigned long flags;
1604 u32 left = 0;
1605 int i = 0;
1606
1607 spin_lock_irqsave(&cohc->lock, flags);
1608
1609 /*
1610 * If there are many queued jobs, we iterate and add the
1611 * size of them all. We take a special look on the first
1612 * job though, since it is probably active.
1613 */
1614 list_for_each(pos, &cohc->active) {
1615 /*
1616 * The first job in the list will be working on the
1617 * hardware. The job can be stopped but still active,
1618 * so that the transfer counter is somewhere inside
1619 * the buffer.
1620 */
1621 cohd = list_entry(pos, struct coh901318_desc, node);
1622
1623 if (i == 0) {
1624 struct coh901318_lli *lli;
1625 dma_addr_t ladd;
1626
1627 /* Read current transfer count value */
1628 left = readl(cohc->base->virtbase +
1629 COH901318_CX_CTRL +
1630 COH901318_CX_CTRL_SPACING * cohc->id) &
1631 COH901318_CX_CTRL_TC_VALUE_MASK;
1632
1633 /* See if the transfer is linked... */
1634 ladd = readl(cohc->base->virtbase +
1635 COH901318_CX_LNK_ADDR +
1636 COH901318_CX_LNK_ADDR_SPACING *
1637 cohc->id) &
1638 ~COH901318_CX_LNK_LINK_IMMEDIATE;
1639 /* Single transaction */
1640 if (!ladd)
1641 continue;
1642
1643 /*
1644 * Linked transaction, follow the lli, find the
1645 * currently processing lli, and proceed to the next
1646 */
1647 lli = cohd->lli;
1648 while (lli && lli->link_addr != ladd)
1649 lli = lli->virt_link_addr;
1650
1651 if (lli)
1652 lli = lli->virt_link_addr;
1653
1654 /*
1655 * Follow remaining lli links around to count the total
1656 * number of bytes left
1657 */
1658 left += coh901318_get_bytes_in_lli(lli);
1659 } else {
1660 left += coh901318_get_bytes_in_lli(cohd->lli);
1661 }
1662 i++;
1663 }
1664
1665 /* Also count bytes in the queued jobs */
1666 list_for_each(pos, &cohc->queue) {
1667 cohd = list_entry(pos, struct coh901318_desc, node);
1668 left += coh901318_get_bytes_in_lli(cohd->lli);
1669 }
1670
1671 spin_unlock_irqrestore(&cohc->lock, flags);
1672
1673 return left;
1674 }
1675
1676 /*
1677 * Pauses a transfer without losing data. Enables power save.
1678 * Use this function in conjunction with coh901318_resume.
1679 */
1680 static int coh901318_pause(struct dma_chan *chan)
1681 {
1682 u32 val;
1683 unsigned long flags;
1684 struct coh901318_chan *cohc = to_coh901318_chan(chan);
1685 int channel = cohc->id;
1686 void __iomem *virtbase = cohc->base->virtbase;
1687
1688 spin_lock_irqsave(&cohc->lock, flags);
1689
1690 /* Disable channel in HW */
1691 val = readl(virtbase + COH901318_CX_CFG +
1692 COH901318_CX_CFG_SPACING * channel);
1693
1694 /* Stopping infinite transfer */
1695 if ((val & COH901318_CX_CTRL_TC_ENABLE) == 0 &&
1696 (val & COH901318_CX_CFG_CH_ENABLE))
1697 cohc->stopped = 1;
1698
1699
1700 val &= ~COH901318_CX_CFG_CH_ENABLE;
1701 /* Enable twice, HW bug work around */
1702 writel(val, virtbase + COH901318_CX_CFG +
1703 COH901318_CX_CFG_SPACING * channel);
1704 writel(val, virtbase + COH901318_CX_CFG +
1705 COH901318_CX_CFG_SPACING * channel);
1706
1707 /* Spin-wait for it to actually go inactive */
1708 while (readl(virtbase + COH901318_CX_STAT+COH901318_CX_STAT_SPACING *
1709 channel) & COH901318_CX_STAT_ACTIVE)
1710 cpu_relax();
1711
1712 /* Check if we stopped an active job */
1713 if ((readl(virtbase + COH901318_CX_CTRL+COH901318_CX_CTRL_SPACING *
1714 channel) & COH901318_CX_CTRL_TC_VALUE_MASK) > 0)
1715 cohc->stopped = 1;
1716
1717 enable_powersave(cohc);
1718
1719 spin_unlock_irqrestore(&cohc->lock, flags);
1720 return 0;
1721 }
1722
1723 /* Resumes a transfer that has been stopped via 300_dma_stop(..).
1724 Power save is handled.
1725 */
1726 static int coh901318_resume(struct dma_chan *chan)
1727 {
1728 u32 val;
1729 unsigned long flags;
1730 struct coh901318_chan *cohc = to_coh901318_chan(chan);
1731 int channel = cohc->id;
1732
1733 spin_lock_irqsave(&cohc->lock, flags);
1734
1735 disable_powersave(cohc);
1736
1737 if (cohc->stopped) {
1738 /* Enable channel in HW */
1739 val = readl(cohc->base->virtbase + COH901318_CX_CFG +
1740 COH901318_CX_CFG_SPACING * channel);
1741
1742 val |= COH901318_CX_CFG_CH_ENABLE;
1743
1744 writel(val, cohc->base->virtbase + COH901318_CX_CFG +
1745 COH901318_CX_CFG_SPACING*channel);
1746
1747 cohc->stopped = 0;
1748 }
1749
1750 spin_unlock_irqrestore(&cohc->lock, flags);
1751 return 0;
1752 }
1753
1754 bool coh901318_filter_id(struct dma_chan *chan, void *chan_id)
1755 {
1756 unsigned long ch_nr = (unsigned long) chan_id;
1757
1758 if (ch_nr == to_coh901318_chan(chan)->id)
1759 return true;
1760
1761 return false;
1762 }
1763 EXPORT_SYMBOL(coh901318_filter_id);
1764
1765 struct coh901318_filter_args {
1766 struct coh901318_base *base;
1767 unsigned int ch_nr;
1768 };
1769
1770 static bool coh901318_filter_base_and_id(struct dma_chan *chan, void *data)
1771 {
1772 struct coh901318_filter_args *args = data;
1773
1774 if (&args->base->dma_slave == chan->device &&
1775 args->ch_nr == to_coh901318_chan(chan)->id)
1776 return true;
1777
1778 return false;
1779 }
1780
1781 static struct dma_chan *coh901318_xlate(struct of_phandle_args *dma_spec,
1782 struct of_dma *ofdma)
1783 {
1784 struct coh901318_filter_args args = {
1785 .base = ofdma->of_dma_data,
1786 .ch_nr = dma_spec->args[0],
1787 };
1788 dma_cap_mask_t cap;
1789 dma_cap_zero(cap);
1790 dma_cap_set(DMA_SLAVE, cap);
1791
1792 return dma_request_channel(cap, coh901318_filter_base_and_id, &args);
1793 }
1794 /*
1795 * DMA channel allocation
1796 */
1797 static int coh901318_config(struct coh901318_chan *cohc,
1798 struct coh901318_params *param)
1799 {
1800 const struct coh901318_params *p;
1801 int channel = cohc->id;
1802 void __iomem *virtbase = cohc->base->virtbase;
1803
1804 if (param)
1805 p = param;
1806 else
1807 p = cohc_chan_param(cohc);
1808
1809 /* Clear any pending BE or TC interrupt */
1810 if (channel < 32) {
1811 writel(1 << channel, virtbase + COH901318_BE_INT_CLEAR1);
1812 writel(1 << channel, virtbase + COH901318_TC_INT_CLEAR1);
1813 } else {
1814 writel(1 << (channel - 32), virtbase +
1815 COH901318_BE_INT_CLEAR2);
1816 writel(1 << (channel - 32), virtbase +
1817 COH901318_TC_INT_CLEAR2);
1818 }
1819
1820 coh901318_set_conf(cohc, p->config);
1821 coh901318_set_ctrl(cohc, p->ctrl_lli_last);
1822
1823 return 0;
1824 }
1825
1826 /* must lock when calling this function
1827 * start queued jobs, if any
1828 * TODO: start all queued jobs in one go
1829 *
1830 * Returns descriptor if queued job is started otherwise NULL.
1831 * If the queue is empty NULL is returned.
1832 */
1833 static struct coh901318_desc *coh901318_queue_start(struct coh901318_chan *cohc)
1834 {
1835 struct coh901318_desc *cohd;
1836
1837 /*
1838 * start queued jobs, if any
1839 * TODO: transmit all queued jobs in one go
1840 */
1841 cohd = coh901318_first_queued(cohc);
1842
1843 if (cohd != NULL) {
1844 /* Remove from queue */
1845 coh901318_desc_remove(cohd);
1846 /* initiate DMA job */
1847 cohc->busy = 1;
1848
1849 coh901318_desc_submit(cohc, cohd);
1850
1851 /* Program the transaction head */
1852 coh901318_set_conf(cohc, cohd->head_config);
1853 coh901318_set_ctrl(cohc, cohd->head_ctrl);
1854 coh901318_prep_linked_list(cohc, cohd->lli);
1855
1856 /* start dma job on this channel */
1857 coh901318_start(cohc);
1858
1859 }
1860
1861 return cohd;
1862 }
1863
1864 /*
1865 * This tasklet is called from the interrupt handler to
1866 * handle each descriptor (DMA job) that is sent to a channel.
1867 */
1868 static void dma_tasklet(unsigned long data)
1869 {
1870 struct coh901318_chan *cohc = (struct coh901318_chan *) data;
1871 struct coh901318_desc *cohd_fin;
1872 unsigned long flags;
1873 struct dmaengine_desc_callback cb;
1874
1875 dev_vdbg(COHC_2_DEV(cohc), "[%s] chan_id %d"
1876 " nbr_active_done %ld\n", __func__,
1877 cohc->id, cohc->nbr_active_done);
1878
1879 spin_lock_irqsave(&cohc->lock, flags);
1880
1881 /* get first active descriptor entry from list */
1882 cohd_fin = coh901318_first_active_get(cohc);
1883
1884 if (cohd_fin == NULL)
1885 goto err;
1886
1887 /* locate callback to client */
1888 dmaengine_desc_get_callback(&cohd_fin->desc, &cb);
1889
1890 /* sign this job as completed on the channel */
1891 dma_cookie_complete(&cohd_fin->desc);
1892
1893 /* release the lli allocation and remove the descriptor */
1894 coh901318_lli_free(&cohc->base->pool, &cohd_fin->lli);
1895
1896 /* return desc to free-list */
1897 coh901318_desc_remove(cohd_fin);
1898 coh901318_desc_free(cohc, cohd_fin);
1899
1900 spin_unlock_irqrestore(&cohc->lock, flags);
1901
1902 /* Call the callback when we're done */
1903 dmaengine_desc_callback_invoke(&cb, NULL);
1904
1905 spin_lock_irqsave(&cohc->lock, flags);
1906
1907 /*
1908 * If another interrupt fired while the tasklet was scheduling,
1909 * we don't get called twice, so we have this number of active
1910 * counter that keep track of the number of IRQs expected to
1911 * be handled for this channel. If there happen to be more than
1912 * one IRQ to be ack:ed, we simply schedule this tasklet again.
1913 */
1914 cohc->nbr_active_done--;
1915 if (cohc->nbr_active_done) {
1916 dev_dbg(COHC_2_DEV(cohc), "scheduling tasklet again, new IRQs "
1917 "came in while we were scheduling this tasklet\n");
1918 if (cohc_chan_conf(cohc)->priority_high)
1919 tasklet_hi_schedule(&cohc->tasklet);
1920 else
1921 tasklet_schedule(&cohc->tasklet);
1922 }
1923
1924 spin_unlock_irqrestore(&cohc->lock, flags);
1925
1926 return;
1927
1928 err:
1929 spin_unlock_irqrestore(&cohc->lock, flags);
1930 dev_err(COHC_2_DEV(cohc), "[%s] No active dma desc\n", __func__);
1931 }
1932
1933
1934 /* called from interrupt context */
1935 static void dma_tc_handle(struct coh901318_chan *cohc)
1936 {
1937 /*
1938 * If the channel is not allocated, then we shouldn't have
1939 * any TC interrupts on it.
1940 */
1941 if (!cohc->allocated) {
1942 dev_err(COHC_2_DEV(cohc), "spurious interrupt from "
1943 "unallocated channel\n");
1944 return;
1945 }
1946
1947 /*
1948 * When we reach this point, at least one queue item
1949 * should have been moved over from cohc->queue to
1950 * cohc->active and run to completion, that is why we're
1951 * getting a terminal count interrupt is it not?
1952 * If you get this BUG() the most probable cause is that
1953 * the individual nodes in the lli chain have IRQ enabled,
1954 * so check your platform config for lli chain ctrl.
1955 */
1956 BUG_ON(list_empty(&cohc->active));
1957
1958 cohc->nbr_active_done++;
1959
1960 /*
1961 * This attempt to take a job from cohc->queue, put it
1962 * into cohc->active and start it.
1963 */
1964 if (coh901318_queue_start(cohc) == NULL)
1965 cohc->busy = 0;
1966
1967 /*
1968 * This tasklet will remove items from cohc->active
1969 * and thus terminates them.
1970 */
1971 if (cohc_chan_conf(cohc)->priority_high)
1972 tasklet_hi_schedule(&cohc->tasklet);
1973 else
1974 tasklet_schedule(&cohc->tasklet);
1975 }
1976
1977
1978 static irqreturn_t dma_irq_handler(int irq, void *dev_id)
1979 {
1980 u32 status1;
1981 u32 status2;
1982 int i;
1983 int ch;
1984 struct coh901318_base *base = dev_id;
1985 struct coh901318_chan *cohc;
1986 void __iomem *virtbase = base->virtbase;
1987
1988 status1 = readl(virtbase + COH901318_INT_STATUS1);
1989 status2 = readl(virtbase + COH901318_INT_STATUS2);
1990
1991 if (unlikely(status1 == 0 && status2 == 0)) {
1992 dev_warn(base->dev, "spurious DMA IRQ from no channel!\n");
1993 return IRQ_HANDLED;
1994 }
1995
1996 /* TODO: consider handle IRQ in tasklet here to
1997 * minimize interrupt latency */
1998
1999 /* Check the first 32 DMA channels for IRQ */
2000 while (status1) {
2001 /* Find first bit set, return as a number. */
2002 i = ffs(status1) - 1;
2003 ch = i;
2004
2005 cohc = &base->chans[ch];
2006 spin_lock(&cohc->lock);
2007
2008 /* Mask off this bit */
2009 status1 &= ~(1 << i);
2010 /* Check the individual channel bits */
2011 if (test_bit(i, virtbase + COH901318_BE_INT_STATUS1)) {
2012 dev_crit(COHC_2_DEV(cohc),
2013 "DMA bus error on channel %d!\n", ch);
2014 BUG_ON(1);
2015 /* Clear BE interrupt */
2016 __set_bit(i, virtbase + COH901318_BE_INT_CLEAR1);
2017 } else {
2018 /* Caused by TC, really? */
2019 if (unlikely(!test_bit(i, virtbase +
2020 COH901318_TC_INT_STATUS1))) {
2021 dev_warn(COHC_2_DEV(cohc),
2022 "ignoring interrupt not caused by terminal count on channel %d\n", ch);
2023 /* Clear TC interrupt */
2024 BUG_ON(1);
2025 __set_bit(i, virtbase + COH901318_TC_INT_CLEAR1);
2026 } else {
2027 /* Enable powersave if transfer has finished */
2028 if (!(readl(virtbase + COH901318_CX_STAT +
2029 COH901318_CX_STAT_SPACING*ch) &
2030 COH901318_CX_STAT_ENABLED)) {
2031 enable_powersave(cohc);
2032 }
2033
2034 /* Must clear TC interrupt before calling
2035 * dma_tc_handle
2036 * in case tc_handle initiate a new dma job
2037 */
2038 __set_bit(i, virtbase + COH901318_TC_INT_CLEAR1);
2039
2040 dma_tc_handle(cohc);
2041 }
2042 }
2043 spin_unlock(&cohc->lock);
2044 }
2045
2046 /* Check the remaining 32 DMA channels for IRQ */
2047 while (status2) {
2048 /* Find first bit set, return as a number. */
2049 i = ffs(status2) - 1;
2050 ch = i + 32;
2051 cohc = &base->chans[ch];
2052 spin_lock(&cohc->lock);
2053
2054 /* Mask off this bit */
2055 status2 &= ~(1 << i);
2056 /* Check the individual channel bits */
2057 if (test_bit(i, virtbase + COH901318_BE_INT_STATUS2)) {
2058 dev_crit(COHC_2_DEV(cohc),
2059 "DMA bus error on channel %d!\n", ch);
2060 /* Clear BE interrupt */
2061 BUG_ON(1);
2062 __set_bit(i, virtbase + COH901318_BE_INT_CLEAR2);
2063 } else {
2064 /* Caused by TC, really? */
2065 if (unlikely(!test_bit(i, virtbase +
2066 COH901318_TC_INT_STATUS2))) {
2067 dev_warn(COHC_2_DEV(cohc),
2068 "ignoring interrupt not caused by terminal count on channel %d\n", ch);
2069 /* Clear TC interrupt */
2070 __set_bit(i, virtbase + COH901318_TC_INT_CLEAR2);
2071 BUG_ON(1);
2072 } else {
2073 /* Enable powersave if transfer has finished */
2074 if (!(readl(virtbase + COH901318_CX_STAT +
2075 COH901318_CX_STAT_SPACING*ch) &
2076 COH901318_CX_STAT_ENABLED)) {
2077 enable_powersave(cohc);
2078 }
2079 /* Must clear TC interrupt before calling
2080 * dma_tc_handle
2081 * in case tc_handle initiate a new dma job
2082 */
2083 __set_bit(i, virtbase + COH901318_TC_INT_CLEAR2);
2084
2085 dma_tc_handle(cohc);
2086 }
2087 }
2088 spin_unlock(&cohc->lock);
2089 }
2090
2091 return IRQ_HANDLED;
2092 }
2093
2094 static int coh901318_terminate_all(struct dma_chan *chan)
2095 {
2096 unsigned long flags;
2097 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2098 struct coh901318_desc *cohd;
2099 void __iomem *virtbase = cohc->base->virtbase;
2100
2101 /* The remainder of this function terminates the transfer */
2102 coh901318_pause(chan);
2103 spin_lock_irqsave(&cohc->lock, flags);
2104
2105 /* Clear any pending BE or TC interrupt */
2106 if (cohc->id < 32) {
2107 writel(1 << cohc->id, virtbase + COH901318_BE_INT_CLEAR1);
2108 writel(1 << cohc->id, virtbase + COH901318_TC_INT_CLEAR1);
2109 } else {
2110 writel(1 << (cohc->id - 32), virtbase +
2111 COH901318_BE_INT_CLEAR2);
2112 writel(1 << (cohc->id - 32), virtbase +
2113 COH901318_TC_INT_CLEAR2);
2114 }
2115
2116 enable_powersave(cohc);
2117
2118 while ((cohd = coh901318_first_active_get(cohc))) {
2119 /* release the lli allocation*/
2120 coh901318_lli_free(&cohc->base->pool, &cohd->lli);
2121
2122 /* return desc to free-list */
2123 coh901318_desc_remove(cohd);
2124 coh901318_desc_free(cohc, cohd);
2125 }
2126
2127 while ((cohd = coh901318_first_queued(cohc))) {
2128 /* release the lli allocation*/
2129 coh901318_lli_free(&cohc->base->pool, &cohd->lli);
2130
2131 /* return desc to free-list */
2132 coh901318_desc_remove(cohd);
2133 coh901318_desc_free(cohc, cohd);
2134 }
2135
2136
2137 cohc->nbr_active_done = 0;
2138 cohc->busy = 0;
2139
2140 spin_unlock_irqrestore(&cohc->lock, flags);
2141
2142 return 0;
2143 }
2144
2145 static int coh901318_alloc_chan_resources(struct dma_chan *chan)
2146 {
2147 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2148 unsigned long flags;
2149
2150 dev_vdbg(COHC_2_DEV(cohc), "[%s] DMA channel %d\n",
2151 __func__, cohc->id);
2152
2153 if (chan->client_count > 1)
2154 return -EBUSY;
2155
2156 spin_lock_irqsave(&cohc->lock, flags);
2157
2158 coh901318_config(cohc, NULL);
2159
2160 cohc->allocated = 1;
2161 dma_cookie_init(chan);
2162
2163 spin_unlock_irqrestore(&cohc->lock, flags);
2164
2165 return 1;
2166 }
2167
2168 static void
2169 coh901318_free_chan_resources(struct dma_chan *chan)
2170 {
2171 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2172 int channel = cohc->id;
2173 unsigned long flags;
2174
2175 spin_lock_irqsave(&cohc->lock, flags);
2176
2177 /* Disable HW */
2178 writel(0x00000000U, cohc->base->virtbase + COH901318_CX_CFG +
2179 COH901318_CX_CFG_SPACING*channel);
2180 writel(0x00000000U, cohc->base->virtbase + COH901318_CX_CTRL +
2181 COH901318_CX_CTRL_SPACING*channel);
2182
2183 cohc->allocated = 0;
2184
2185 spin_unlock_irqrestore(&cohc->lock, flags);
2186
2187 coh901318_terminate_all(chan);
2188 }
2189
2190
2191 static dma_cookie_t
2192 coh901318_tx_submit(struct dma_async_tx_descriptor *tx)
2193 {
2194 struct coh901318_desc *cohd = container_of(tx, struct coh901318_desc,
2195 desc);
2196 struct coh901318_chan *cohc = to_coh901318_chan(tx->chan);
2197 unsigned long flags;
2198 dma_cookie_t cookie;
2199
2200 spin_lock_irqsave(&cohc->lock, flags);
2201 cookie = dma_cookie_assign(tx);
2202
2203 coh901318_desc_queue(cohc, cohd);
2204
2205 spin_unlock_irqrestore(&cohc->lock, flags);
2206
2207 return cookie;
2208 }
2209
2210 static struct dma_async_tx_descriptor *
2211 coh901318_prep_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
2212 size_t size, unsigned long flags)
2213 {
2214 struct coh901318_lli *lli;
2215 struct coh901318_desc *cohd;
2216 unsigned long flg;
2217 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2218 int lli_len;
2219 u32 ctrl_last = cohc_chan_param(cohc)->ctrl_lli_last;
2220 int ret;
2221
2222 spin_lock_irqsave(&cohc->lock, flg);
2223
2224 dev_vdbg(COHC_2_DEV(cohc),
2225 "[%s] channel %d src %pad dest %pad size %zu\n",
2226 __func__, cohc->id, &src, &dest, size);
2227
2228 if (flags & DMA_PREP_INTERRUPT)
2229 /* Trigger interrupt after last lli */
2230 ctrl_last |= COH901318_CX_CTRL_TC_IRQ_ENABLE;
2231
2232 lli_len = size >> MAX_DMA_PACKET_SIZE_SHIFT;
2233 if ((lli_len << MAX_DMA_PACKET_SIZE_SHIFT) < size)
2234 lli_len++;
2235
2236 lli = coh901318_lli_alloc(&cohc->base->pool, lli_len);
2237
2238 if (lli == NULL)
2239 goto err;
2240
2241 ret = coh901318_lli_fill_memcpy(
2242 &cohc->base->pool, lli, src, size, dest,
2243 cohc_chan_param(cohc)->ctrl_lli_chained,
2244 ctrl_last);
2245 if (ret)
2246 goto err;
2247
2248 COH_DBG(coh901318_list_print(cohc, lli));
2249
2250 /* Pick a descriptor to handle this transfer */
2251 cohd = coh901318_desc_get(cohc);
2252 cohd->lli = lli;
2253 cohd->flags = flags;
2254 cohd->desc.tx_submit = coh901318_tx_submit;
2255
2256 spin_unlock_irqrestore(&cohc->lock, flg);
2257
2258 return &cohd->desc;
2259 err:
2260 spin_unlock_irqrestore(&cohc->lock, flg);
2261 return NULL;
2262 }
2263
2264 static struct dma_async_tx_descriptor *
2265 coh901318_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
2266 unsigned int sg_len, enum dma_transfer_direction direction,
2267 unsigned long flags, void *context)
2268 {
2269 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2270 struct coh901318_lli *lli;
2271 struct coh901318_desc *cohd;
2272 const struct coh901318_params *params;
2273 struct scatterlist *sg;
2274 int len = 0;
2275 int size;
2276 int i;
2277 u32 ctrl_chained = cohc_chan_param(cohc)->ctrl_lli_chained;
2278 u32 ctrl = cohc_chan_param(cohc)->ctrl_lli;
2279 u32 ctrl_last = cohc_chan_param(cohc)->ctrl_lli_last;
2280 u32 config;
2281 unsigned long flg;
2282 int ret;
2283
2284 if (!sgl)
2285 goto out;
2286 if (sg_dma_len(sgl) == 0)
2287 goto out;
2288
2289 spin_lock_irqsave(&cohc->lock, flg);
2290
2291 dev_vdbg(COHC_2_DEV(cohc), "[%s] sg_len %d dir %d\n",
2292 __func__, sg_len, direction);
2293
2294 if (flags & DMA_PREP_INTERRUPT)
2295 /* Trigger interrupt after last lli */
2296 ctrl_last |= COH901318_CX_CTRL_TC_IRQ_ENABLE;
2297
2298 params = cohc_chan_param(cohc);
2299 config = params->config;
2300 /*
2301 * Add runtime-specific control on top, make
2302 * sure the bits you set per peripheral channel are
2303 * cleared in the default config from the platform.
2304 */
2305 ctrl_chained |= cohc->ctrl;
2306 ctrl_last |= cohc->ctrl;
2307 ctrl |= cohc->ctrl;
2308
2309 if (direction == DMA_MEM_TO_DEV) {
2310 u32 tx_flags = COH901318_CX_CTRL_PRDD_SOURCE |
2311 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE;
2312
2313 config |= COH901318_CX_CFG_RM_MEMORY_TO_PRIMARY;
2314 ctrl_chained |= tx_flags;
2315 ctrl_last |= tx_flags;
2316 ctrl |= tx_flags;
2317 } else if (direction == DMA_DEV_TO_MEM) {
2318 u32 rx_flags = COH901318_CX_CTRL_PRDD_DEST |
2319 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE;
2320
2321 config |= COH901318_CX_CFG_RM_PRIMARY_TO_MEMORY;
2322 ctrl_chained |= rx_flags;
2323 ctrl_last |= rx_flags;
2324 ctrl |= rx_flags;
2325 } else
2326 goto err_direction;
2327
2328 /* The dma only supports transmitting packages up to
2329 * MAX_DMA_PACKET_SIZE. Calculate to total number of
2330 * dma elemts required to send the entire sg list
2331 */
2332 for_each_sg(sgl, sg, sg_len, i) {
2333 unsigned int factor;
2334 size = sg_dma_len(sg);
2335
2336 if (size <= MAX_DMA_PACKET_SIZE) {
2337 len++;
2338 continue;
2339 }
2340
2341 factor = size >> MAX_DMA_PACKET_SIZE_SHIFT;
2342 if ((factor << MAX_DMA_PACKET_SIZE_SHIFT) < size)
2343 factor++;
2344
2345 len += factor;
2346 }
2347
2348 pr_debug("Allocate %d lli:s for this transfer\n", len);
2349 lli = coh901318_lli_alloc(&cohc->base->pool, len);
2350
2351 if (lli == NULL)
2352 goto err_dma_alloc;
2353
2354 /* initiate allocated lli list */
2355 ret = coh901318_lli_fill_sg(&cohc->base->pool, lli, sgl, sg_len,
2356 cohc->addr,
2357 ctrl_chained,
2358 ctrl,
2359 ctrl_last,
2360 direction, COH901318_CX_CTRL_TC_IRQ_ENABLE);
2361 if (ret)
2362 goto err_lli_fill;
2363
2364
2365 COH_DBG(coh901318_list_print(cohc, lli));
2366
2367 /* Pick a descriptor to handle this transfer */
2368 cohd = coh901318_desc_get(cohc);
2369 cohd->head_config = config;
2370 /*
2371 * Set the default head ctrl for the channel to the one from the
2372 * lli, things may have changed due to odd buffer alignment
2373 * etc.
2374 */
2375 cohd->head_ctrl = lli->control;
2376 cohd->dir = direction;
2377 cohd->flags = flags;
2378 cohd->desc.tx_submit = coh901318_tx_submit;
2379 cohd->lli = lli;
2380
2381 spin_unlock_irqrestore(&cohc->lock, flg);
2382
2383 return &cohd->desc;
2384 err_lli_fill:
2385 err_dma_alloc:
2386 err_direction:
2387 spin_unlock_irqrestore(&cohc->lock, flg);
2388 out:
2389 return NULL;
2390 }
2391
2392 static enum dma_status
2393 coh901318_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
2394 struct dma_tx_state *txstate)
2395 {
2396 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2397 enum dma_status ret;
2398
2399 ret = dma_cookie_status(chan, cookie, txstate);
2400 if (ret == DMA_COMPLETE || !txstate)
2401 return ret;
2402
2403 dma_set_residue(txstate, coh901318_get_bytes_left(chan));
2404
2405 if (ret == DMA_IN_PROGRESS && cohc->stopped)
2406 ret = DMA_PAUSED;
2407
2408 return ret;
2409 }
2410
2411 static void
2412 coh901318_issue_pending(struct dma_chan *chan)
2413 {
2414 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2415 unsigned long flags;
2416
2417 spin_lock_irqsave(&cohc->lock, flags);
2418
2419 /*
2420 * Busy means that pending jobs are already being processed,
2421 * and then there is no point in starting the queue: the
2422 * terminal count interrupt on the channel will take the next
2423 * job on the queue and execute it anyway.
2424 */
2425 if (!cohc->busy)
2426 coh901318_queue_start(cohc);
2427
2428 spin_unlock_irqrestore(&cohc->lock, flags);
2429 }
2430
2431 /*
2432 * Here we wrap in the runtime dma control interface
2433 */
2434 struct burst_table {
2435 int burst_8bit;
2436 int burst_16bit;
2437 int burst_32bit;
2438 u32 reg;
2439 };
2440
2441 static const struct burst_table burst_sizes[] = {
2442 {
2443 .burst_8bit = 64,
2444 .burst_16bit = 32,
2445 .burst_32bit = 16,
2446 .reg = COH901318_CX_CTRL_BURST_COUNT_64_BYTES,
2447 },
2448 {
2449 .burst_8bit = 48,
2450 .burst_16bit = 24,
2451 .burst_32bit = 12,
2452 .reg = COH901318_CX_CTRL_BURST_COUNT_48_BYTES,
2453 },
2454 {
2455 .burst_8bit = 32,
2456 .burst_16bit = 16,
2457 .burst_32bit = 8,
2458 .reg = COH901318_CX_CTRL_BURST_COUNT_32_BYTES,
2459 },
2460 {
2461 .burst_8bit = 16,
2462 .burst_16bit = 8,
2463 .burst_32bit = 4,
2464 .reg = COH901318_CX_CTRL_BURST_COUNT_16_BYTES,
2465 },
2466 {
2467 .burst_8bit = 8,
2468 .burst_16bit = 4,
2469 .burst_32bit = 2,
2470 .reg = COH901318_CX_CTRL_BURST_COUNT_8_BYTES,
2471 },
2472 {
2473 .burst_8bit = 4,
2474 .burst_16bit = 2,
2475 .burst_32bit = 1,
2476 .reg = COH901318_CX_CTRL_BURST_COUNT_4_BYTES,
2477 },
2478 {
2479 .burst_8bit = 2,
2480 .burst_16bit = 1,
2481 .burst_32bit = 0,
2482 .reg = COH901318_CX_CTRL_BURST_COUNT_2_BYTES,
2483 },
2484 {
2485 .burst_8bit = 1,
2486 .burst_16bit = 0,
2487 .burst_32bit = 0,
2488 .reg = COH901318_CX_CTRL_BURST_COUNT_1_BYTE,
2489 },
2490 };
2491
2492 static int coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
2493 struct dma_slave_config *config)
2494 {
2495 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2496 dma_addr_t addr;
2497 enum dma_slave_buswidth addr_width;
2498 u32 maxburst;
2499 u32 ctrl = 0;
2500 int i = 0;
2501
2502 /* We only support mem to per or per to mem transfers */
2503 if (config->direction == DMA_DEV_TO_MEM) {
2504 addr = config->src_addr;
2505 addr_width = config->src_addr_width;
2506 maxburst = config->src_maxburst;
2507 } else if (config->direction == DMA_MEM_TO_DEV) {
2508 addr = config->dst_addr;
2509 addr_width = config->dst_addr_width;
2510 maxburst = config->dst_maxburst;
2511 } else {
2512 dev_err(COHC_2_DEV(cohc), "illegal channel mode\n");
2513 return -EINVAL;
2514 }
2515
2516 dev_dbg(COHC_2_DEV(cohc), "configure channel for %d byte transfers\n",
2517 addr_width);
2518 switch (addr_width) {
2519 case DMA_SLAVE_BUSWIDTH_1_BYTE:
2520 ctrl |=
2521 COH901318_CX_CTRL_SRC_BUS_SIZE_8_BITS |
2522 COH901318_CX_CTRL_DST_BUS_SIZE_8_BITS;
2523
2524 while (i < ARRAY_SIZE(burst_sizes)) {
2525 if (burst_sizes[i].burst_8bit <= maxburst)
2526 break;
2527 i++;
2528 }
2529
2530 break;
2531 case DMA_SLAVE_BUSWIDTH_2_BYTES:
2532 ctrl |=
2533 COH901318_CX_CTRL_SRC_BUS_SIZE_16_BITS |
2534 COH901318_CX_CTRL_DST_BUS_SIZE_16_BITS;
2535
2536 while (i < ARRAY_SIZE(burst_sizes)) {
2537 if (burst_sizes[i].burst_16bit <= maxburst)
2538 break;
2539 i++;
2540 }
2541
2542 break;
2543 case DMA_SLAVE_BUSWIDTH_4_BYTES:
2544 /* Direction doesn't matter here, it's 32/32 bits */
2545 ctrl |=
2546 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
2547 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS;
2548
2549 while (i < ARRAY_SIZE(burst_sizes)) {
2550 if (burst_sizes[i].burst_32bit <= maxburst)
2551 break;
2552 i++;
2553 }
2554
2555 break;
2556 default:
2557 dev_err(COHC_2_DEV(cohc),
2558 "bad runtimeconfig: alien address width\n");
2559 return -EINVAL;
2560 }
2561
2562 ctrl |= burst_sizes[i].reg;
2563 dev_dbg(COHC_2_DEV(cohc),
2564 "selected burst size %d bytes for address width %d bytes, maxburst %d\n",
2565 burst_sizes[i].burst_8bit, addr_width, maxburst);
2566
2567 cohc->addr = addr;
2568 cohc->ctrl = ctrl;
2569
2570 return 0;
2571 }
2572
2573 static void coh901318_base_init(struct dma_device *dma, const int *pick_chans,
2574 struct coh901318_base *base)
2575 {
2576 int chans_i;
2577 int i = 0;
2578 struct coh901318_chan *cohc;
2579
2580 INIT_LIST_HEAD(&dma->channels);
2581
2582 for (chans_i = 0; pick_chans[chans_i] != -1; chans_i += 2) {
2583 for (i = pick_chans[chans_i]; i <= pick_chans[chans_i+1]; i++) {
2584 cohc = &base->chans[i];
2585
2586 cohc->base = base;
2587 cohc->chan.device = dma;
2588 cohc->id = i;
2589
2590 /* TODO: do we really need this lock if only one
2591 * client is connected to each channel?
2592 */
2593
2594 spin_lock_init(&cohc->lock);
2595
2596 cohc->nbr_active_done = 0;
2597 cohc->busy = 0;
2598 INIT_LIST_HEAD(&cohc->free);
2599 INIT_LIST_HEAD(&cohc->active);
2600 INIT_LIST_HEAD(&cohc->queue);
2601
2602 tasklet_init(&cohc->tasklet, dma_tasklet,
2603 (unsigned long) cohc);
2604
2605 list_add_tail(&cohc->chan.device_node,
2606 &dma->channels);
2607 }
2608 }
2609 }
2610
2611 static int __init coh901318_probe(struct platform_device *pdev)
2612 {
2613 int err = 0;
2614 struct coh901318_base *base;
2615 int irq;
2616 struct resource *io;
2617
2618 io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2619 if (!io)
2620 return -ENODEV;
2621
2622 /* Map DMA controller registers to virtual memory */
2623 if (devm_request_mem_region(&pdev->dev,
2624 io->start,
2625 resource_size(io),
2626 pdev->dev.driver->name) == NULL)
2627 return -ENOMEM;
2628
2629 base = devm_kzalloc(&pdev->dev,
2630 ALIGN(sizeof(struct coh901318_base), 4) +
2631 U300_DMA_CHANNELS *
2632 sizeof(struct coh901318_chan),
2633 GFP_KERNEL);
2634 if (!base)
2635 return -ENOMEM;
2636
2637 base->chans = ((void *)base) + ALIGN(sizeof(struct coh901318_base), 4);
2638
2639 base->virtbase = devm_ioremap(&pdev->dev, io->start, resource_size(io));
2640 if (!base->virtbase)
2641 return -ENOMEM;
2642
2643 base->dev = &pdev->dev;
2644 spin_lock_init(&base->pm.lock);
2645 base->pm.started_channels = 0;
2646
2647 COH901318_DEBUGFS_ASSIGN(debugfs_dma_base, base);
2648
2649 irq = platform_get_irq(pdev, 0);
2650 if (irq < 0)
2651 return irq;
2652
2653 err = devm_request_irq(&pdev->dev, irq, dma_irq_handler, 0,
2654 "coh901318", base);
2655 if (err)
2656 return err;
2657
2658 base->irq = irq;
2659
2660 err = coh901318_pool_create(&base->pool, &pdev->dev,
2661 sizeof(struct coh901318_lli),
2662 32);
2663 if (err)
2664 return err;
2665
2666 /* init channels for device transfers */
2667 coh901318_base_init(&base->dma_slave, dma_slave_channels,
2668 base);
2669
2670 dma_cap_zero(base->dma_slave.cap_mask);
2671 dma_cap_set(DMA_SLAVE, base->dma_slave.cap_mask);
2672
2673 base->dma_slave.device_alloc_chan_resources = coh901318_alloc_chan_resources;
2674 base->dma_slave.device_free_chan_resources = coh901318_free_chan_resources;
2675 base->dma_slave.device_prep_slave_sg = coh901318_prep_slave_sg;
2676 base->dma_slave.device_tx_status = coh901318_tx_status;
2677 base->dma_slave.device_issue_pending = coh901318_issue_pending;
2678 base->dma_slave.device_config = coh901318_dma_set_runtimeconfig;
2679 base->dma_slave.device_pause = coh901318_pause;
2680 base->dma_slave.device_resume = coh901318_resume;
2681 base->dma_slave.device_terminate_all = coh901318_terminate_all;
2682 base->dma_slave.dev = &pdev->dev;
2683
2684 err = dma_async_device_register(&base->dma_slave);
2685
2686 if (err)
2687 goto err_register_slave;
2688
2689 /* init channels for memcpy */
2690 coh901318_base_init(&base->dma_memcpy, dma_memcpy_channels,
2691 base);
2692
2693 dma_cap_zero(base->dma_memcpy.cap_mask);
2694 dma_cap_set(DMA_MEMCPY, base->dma_memcpy.cap_mask);
2695
2696 base->dma_memcpy.device_alloc_chan_resources = coh901318_alloc_chan_resources;
2697 base->dma_memcpy.device_free_chan_resources = coh901318_free_chan_resources;
2698 base->dma_memcpy.device_prep_dma_memcpy = coh901318_prep_memcpy;
2699 base->dma_memcpy.device_tx_status = coh901318_tx_status;
2700 base->dma_memcpy.device_issue_pending = coh901318_issue_pending;
2701 base->dma_memcpy.device_config = coh901318_dma_set_runtimeconfig;
2702 base->dma_memcpy.device_pause = coh901318_pause;
2703 base->dma_memcpy.device_resume = coh901318_resume;
2704 base->dma_memcpy.device_terminate_all = coh901318_terminate_all;
2705 base->dma_memcpy.dev = &pdev->dev;
2706 /*
2707 * This controller can only access address at even 32bit boundaries,
2708 * i.e. 2^2
2709 */
2710 base->dma_memcpy.copy_align = DMAENGINE_ALIGN_4_BYTES;
2711 err = dma_async_device_register(&base->dma_memcpy);
2712
2713 if (err)
2714 goto err_register_memcpy;
2715
2716 err = of_dma_controller_register(pdev->dev.of_node, coh901318_xlate,
2717 base);
2718 if (err)
2719 goto err_register_of_dma;
2720
2721 platform_set_drvdata(pdev, base);
2722 dev_info(&pdev->dev, "Initialized COH901318 DMA on virtual base 0x%p\n",
2723 base->virtbase);
2724
2725 return err;
2726
2727 err_register_of_dma:
2728 dma_async_device_unregister(&base->dma_memcpy);
2729 err_register_memcpy:
2730 dma_async_device_unregister(&base->dma_slave);
2731 err_register_slave:
2732 coh901318_pool_destroy(&base->pool);
2733 return err;
2734 }
2735 static void coh901318_base_remove(struct coh901318_base *base, const int *pick_chans)
2736 {
2737 int chans_i;
2738 int i = 0;
2739 struct coh901318_chan *cohc;
2740
2741 for (chans_i = 0; pick_chans[chans_i] != -1; chans_i += 2) {
2742 for (i = pick_chans[chans_i]; i <= pick_chans[chans_i+1]; i++) {
2743 cohc = &base->chans[i];
2744
2745 tasklet_kill(&cohc->tasklet);
2746 }
2747 }
2748
2749 }
2750
2751 static int coh901318_remove(struct platform_device *pdev)
2752 {
2753 struct coh901318_base *base = platform_get_drvdata(pdev);
2754
2755 devm_free_irq(&pdev->dev, base->irq, base);
2756
2757 coh901318_base_remove(base, dma_slave_channels);
2758 coh901318_base_remove(base, dma_memcpy_channels);
2759
2760 of_dma_controller_free(pdev->dev.of_node);
2761 dma_async_device_unregister(&base->dma_memcpy);
2762 dma_async_device_unregister(&base->dma_slave);
2763 coh901318_pool_destroy(&base->pool);
2764 return 0;
2765 }
2766
2767 static const struct of_device_id coh901318_dt_match[] = {
2768 { .compatible = "stericsson,coh901318" },
2769 {},
2770 };
2771
2772 static struct platform_driver coh901318_driver = {
2773 .remove = coh901318_remove,
2774 .driver = {
2775 .name = "coh901318",
2776 .of_match_table = coh901318_dt_match,
2777 },
2778 };
2779
2780 static int __init coh901318_init(void)
2781 {
2782 return platform_driver_probe(&coh901318_driver, coh901318_probe);
2783 }
2784 subsys_initcall(coh901318_init);
2785
2786 static void __exit coh901318_exit(void)
2787 {
2788 platform_driver_unregister(&coh901318_driver);
2789 }
2790 module_exit(coh901318_exit);
2791
2792 MODULE_LICENSE("GPL");
2793 MODULE_AUTHOR("Per Friden");
Linux with added FPC-III support