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igb: Add device support for flashless SKU of i210 device
[deliverable/linux.git] / drivers / dma / coh901318.c
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 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 struct coh901318_pool pool;
1284 struct powersave pm;
1285 struct dma_device dma_slave;
1286 struct dma_device dma_memcpy;
1287 struct coh901318_chan *chans;
1288 };
1289
1290 struct coh901318_chan {
1291 spinlock_t lock;
1292 int allocated;
1293 int id;
1294 int stopped;
1295
1296 struct work_struct free_work;
1297 struct dma_chan chan;
1298
1299 struct tasklet_struct tasklet;
1300
1301 struct list_head active;
1302 struct list_head queue;
1303 struct list_head free;
1304
1305 unsigned long nbr_active_done;
1306 unsigned long busy;
1307
1308 u32 addr;
1309 u32 ctrl;
1310
1311 struct coh901318_base *base;
1312 };
1313
1314 static void coh901318_list_print(struct coh901318_chan *cohc,
1315 struct coh901318_lli *lli)
1316 {
1317 struct coh901318_lli *l = lli;
1318 int i = 0;
1319
1320 while (l) {
1321 dev_vdbg(COHC_2_DEV(cohc), "i %d, lli %p, ctrl 0x%x, src 0x%x"
1322 ", dst 0x%x, link 0x%x virt_link_addr 0x%p\n",
1323 i, l, l->control, l->src_addr, l->dst_addr,
1324 l->link_addr, l->virt_link_addr);
1325 i++;
1326 l = l->virt_link_addr;
1327 }
1328 }
1329
1330 #ifdef CONFIG_DEBUG_FS
1331
1332 #define COH901318_DEBUGFS_ASSIGN(x, y) (x = y)
1333
1334 static struct coh901318_base *debugfs_dma_base;
1335 static struct dentry *dma_dentry;
1336
1337 static int coh901318_debugfs_read(struct file *file, char __user *buf,
1338 size_t count, loff_t *f_pos)
1339 {
1340 u64 started_channels = debugfs_dma_base->pm.started_channels;
1341 int pool_count = debugfs_dma_base->pool.debugfs_pool_counter;
1342 int i;
1343 int ret = 0;
1344 char *dev_buf;
1345 char *tmp;
1346 int dev_size;
1347
1348 dev_buf = kmalloc(4*1024, GFP_KERNEL);
1349 if (dev_buf == NULL)
1350 goto err_kmalloc;
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 & (1 << i))
1357 tmp += sprintf(tmp, "channel %d\n", i);
1358
1359 tmp += sprintf(tmp, "Pool alloc nbr %d\n", pool_count);
1360 dev_size = tmp - dev_buf;
1361
1362 /* No more to read if offset != 0 */
1363 if (*f_pos > dev_size)
1364 goto out;
1365
1366 if (count > dev_size - *f_pos)
1367 count = dev_size - *f_pos;
1368
1369 if (copy_to_user(buf, dev_buf + *f_pos, count))
1370 ret = -EINVAL;
1371 ret = count;
1372 *f_pos += count;
1373
1374 out:
1375 kfree(dev_buf);
1376 return ret;
1377
1378 err_kmalloc:
1379 return 0;
1380 }
1381
1382 static const struct file_operations coh901318_debugfs_status_operations = {
1383 .owner = THIS_MODULE,
1384 .open = simple_open,
1385 .read = coh901318_debugfs_read,
1386 .llseek = default_llseek,
1387 };
1388
1389
1390 static int __init init_coh901318_debugfs(void)
1391 {
1392
1393 dma_dentry = debugfs_create_dir("dma", NULL);
1394
1395 (void) debugfs_create_file("status",
1396 S_IFREG | S_IRUGO,
1397 dma_dentry, NULL,
1398 &coh901318_debugfs_status_operations);
1399 return 0;
1400 }
1401
1402 static void __exit exit_coh901318_debugfs(void)
1403 {
1404 debugfs_remove_recursive(dma_dentry);
1405 }
1406
1407 module_init(init_coh901318_debugfs);
1408 module_exit(exit_coh901318_debugfs);
1409 #else
1410
1411 #define COH901318_DEBUGFS_ASSIGN(x, y)
1412
1413 #endif /* CONFIG_DEBUG_FS */
1414
1415 static inline struct coh901318_chan *to_coh901318_chan(struct dma_chan *chan)
1416 {
1417 return container_of(chan, struct coh901318_chan, chan);
1418 }
1419
1420 static inline const struct coh901318_params *
1421 cohc_chan_param(struct coh901318_chan *cohc)
1422 {
1423 return &chan_config[cohc->id].param;
1424 }
1425
1426 static inline const struct coh_dma_channel *
1427 cohc_chan_conf(struct coh901318_chan *cohc)
1428 {
1429 return &chan_config[cohc->id];
1430 }
1431
1432 static void enable_powersave(struct coh901318_chan *cohc)
1433 {
1434 unsigned long flags;
1435 struct powersave *pm = &cohc->base->pm;
1436
1437 spin_lock_irqsave(&pm->lock, flags);
1438
1439 pm->started_channels &= ~(1ULL << cohc->id);
1440
1441 spin_unlock_irqrestore(&pm->lock, flags);
1442 }
1443 static void disable_powersave(struct coh901318_chan *cohc)
1444 {
1445 unsigned long flags;
1446 struct powersave *pm = &cohc->base->pm;
1447
1448 spin_lock_irqsave(&pm->lock, flags);
1449
1450 pm->started_channels |= (1ULL << cohc->id);
1451
1452 spin_unlock_irqrestore(&pm->lock, flags);
1453 }
1454
1455 static inline int coh901318_set_ctrl(struct coh901318_chan *cohc, u32 control)
1456 {
1457 int channel = cohc->id;
1458 void __iomem *virtbase = cohc->base->virtbase;
1459
1460 writel(control,
1461 virtbase + COH901318_CX_CTRL +
1462 COH901318_CX_CTRL_SPACING * channel);
1463 return 0;
1464 }
1465
1466 static inline int coh901318_set_conf(struct coh901318_chan *cohc, u32 conf)
1467 {
1468 int channel = cohc->id;
1469 void __iomem *virtbase = cohc->base->virtbase;
1470
1471 writel(conf,
1472 virtbase + COH901318_CX_CFG +
1473 COH901318_CX_CFG_SPACING*channel);
1474 return 0;
1475 }
1476
1477
1478 static int coh901318_start(struct coh901318_chan *cohc)
1479 {
1480 u32 val;
1481 int channel = cohc->id;
1482 void __iomem *virtbase = cohc->base->virtbase;
1483
1484 disable_powersave(cohc);
1485
1486 val = readl(virtbase + COH901318_CX_CFG +
1487 COH901318_CX_CFG_SPACING * channel);
1488
1489 /* Enable channel */
1490 val |= COH901318_CX_CFG_CH_ENABLE;
1491 writel(val, virtbase + COH901318_CX_CFG +
1492 COH901318_CX_CFG_SPACING * channel);
1493
1494 return 0;
1495 }
1496
1497 static int coh901318_prep_linked_list(struct coh901318_chan *cohc,
1498 struct coh901318_lli *lli)
1499 {
1500 int channel = cohc->id;
1501 void __iomem *virtbase = cohc->base->virtbase;
1502
1503 BUG_ON(readl(virtbase + COH901318_CX_STAT +
1504 COH901318_CX_STAT_SPACING*channel) &
1505 COH901318_CX_STAT_ACTIVE);
1506
1507 writel(lli->src_addr,
1508 virtbase + COH901318_CX_SRC_ADDR +
1509 COH901318_CX_SRC_ADDR_SPACING * channel);
1510
1511 writel(lli->dst_addr, virtbase +
1512 COH901318_CX_DST_ADDR +
1513 COH901318_CX_DST_ADDR_SPACING * channel);
1514
1515 writel(lli->link_addr, virtbase + COH901318_CX_LNK_ADDR +
1516 COH901318_CX_LNK_ADDR_SPACING * channel);
1517
1518 writel(lli->control, virtbase + COH901318_CX_CTRL +
1519 COH901318_CX_CTRL_SPACING * channel);
1520
1521 return 0;
1522 }
1523
1524 static struct coh901318_desc *
1525 coh901318_desc_get(struct coh901318_chan *cohc)
1526 {
1527 struct coh901318_desc *desc;
1528
1529 if (list_empty(&cohc->free)) {
1530 /* alloc new desc because we're out of used ones
1531 * TODO: alloc a pile of descs instead of just one,
1532 * avoid many small allocations.
1533 */
1534 desc = kzalloc(sizeof(struct coh901318_desc), GFP_NOWAIT);
1535 if (desc == NULL)
1536 goto out;
1537 INIT_LIST_HEAD(&desc->node);
1538 dma_async_tx_descriptor_init(&desc->desc, &cohc->chan);
1539 } else {
1540 /* Reuse an old desc. */
1541 desc = list_first_entry(&cohc->free,
1542 struct coh901318_desc,
1543 node);
1544 list_del(&desc->node);
1545 /* Initialize it a bit so it's not insane */
1546 desc->sg = NULL;
1547 desc->sg_len = 0;
1548 desc->desc.callback = NULL;
1549 desc->desc.callback_param = NULL;
1550 }
1551
1552 out:
1553 return desc;
1554 }
1555
1556 static void
1557 coh901318_desc_free(struct coh901318_chan *cohc, struct coh901318_desc *cohd)
1558 {
1559 list_add_tail(&cohd->node, &cohc->free);
1560 }
1561
1562 /* call with irq lock held */
1563 static void
1564 coh901318_desc_submit(struct coh901318_chan *cohc, struct coh901318_desc *desc)
1565 {
1566 list_add_tail(&desc->node, &cohc->active);
1567 }
1568
1569 static struct coh901318_desc *
1570 coh901318_first_active_get(struct coh901318_chan *cohc)
1571 {
1572 struct coh901318_desc *d;
1573
1574 if (list_empty(&cohc->active))
1575 return NULL;
1576
1577 d = list_first_entry(&cohc->active,
1578 struct coh901318_desc,
1579 node);
1580 return d;
1581 }
1582
1583 static void
1584 coh901318_desc_remove(struct coh901318_desc *cohd)
1585 {
1586 list_del(&cohd->node);
1587 }
1588
1589 static void
1590 coh901318_desc_queue(struct coh901318_chan *cohc, struct coh901318_desc *desc)
1591 {
1592 list_add_tail(&desc->node, &cohc->queue);
1593 }
1594
1595 static struct coh901318_desc *
1596 coh901318_first_queued(struct coh901318_chan *cohc)
1597 {
1598 struct coh901318_desc *d;
1599
1600 if (list_empty(&cohc->queue))
1601 return NULL;
1602
1603 d = list_first_entry(&cohc->queue,
1604 struct coh901318_desc,
1605 node);
1606 return d;
1607 }
1608
1609 static inline u32 coh901318_get_bytes_in_lli(struct coh901318_lli *in_lli)
1610 {
1611 struct coh901318_lli *lli = in_lli;
1612 u32 bytes = 0;
1613
1614 while (lli) {
1615 bytes += lli->control & COH901318_CX_CTRL_TC_VALUE_MASK;
1616 lli = lli->virt_link_addr;
1617 }
1618 return bytes;
1619 }
1620
1621 /*
1622 * Get the number of bytes left to transfer on this channel,
1623 * it is unwise to call this before stopping the channel for
1624 * absolute measures, but for a rough guess you can still call
1625 * it.
1626 */
1627 static u32 coh901318_get_bytes_left(struct dma_chan *chan)
1628 {
1629 struct coh901318_chan *cohc = to_coh901318_chan(chan);
1630 struct coh901318_desc *cohd;
1631 struct list_head *pos;
1632 unsigned long flags;
1633 u32 left = 0;
1634 int i = 0;
1635
1636 spin_lock_irqsave(&cohc->lock, flags);
1637
1638 /*
1639 * If there are many queued jobs, we iterate and add the
1640 * size of them all. We take a special look on the first
1641 * job though, since it is probably active.
1642 */
1643 list_for_each(pos, &cohc->active) {
1644 /*
1645 * The first job in the list will be working on the
1646 * hardware. The job can be stopped but still active,
1647 * so that the transfer counter is somewhere inside
1648 * the buffer.
1649 */
1650 cohd = list_entry(pos, struct coh901318_desc, node);
1651
1652 if (i == 0) {
1653 struct coh901318_lli *lli;
1654 dma_addr_t ladd;
1655
1656 /* Read current transfer count value */
1657 left = readl(cohc->base->virtbase +
1658 COH901318_CX_CTRL +
1659 COH901318_CX_CTRL_SPACING * cohc->id) &
1660 COH901318_CX_CTRL_TC_VALUE_MASK;
1661
1662 /* See if the transfer is linked... */
1663 ladd = readl(cohc->base->virtbase +
1664 COH901318_CX_LNK_ADDR +
1665 COH901318_CX_LNK_ADDR_SPACING *
1666 cohc->id) &
1667 ~COH901318_CX_LNK_LINK_IMMEDIATE;
1668 /* Single transaction */
1669 if (!ladd)
1670 continue;
1671
1672 /*
1673 * Linked transaction, follow the lli, find the
1674 * currently processing lli, and proceed to the next
1675 */
1676 lli = cohd->lli;
1677 while (lli && lli->link_addr != ladd)
1678 lli = lli->virt_link_addr;
1679
1680 if (lli)
1681 lli = lli->virt_link_addr;
1682
1683 /*
1684 * Follow remaining lli links around to count the total
1685 * number of bytes left
1686 */
1687 left += coh901318_get_bytes_in_lli(lli);
1688 } else {
1689 left += coh901318_get_bytes_in_lli(cohd->lli);
1690 }
1691 i++;
1692 }
1693
1694 /* Also count bytes in the queued jobs */
1695 list_for_each(pos, &cohc->queue) {
1696 cohd = list_entry(pos, struct coh901318_desc, node);
1697 left += coh901318_get_bytes_in_lli(cohd->lli);
1698 }
1699
1700 spin_unlock_irqrestore(&cohc->lock, flags);
1701
1702 return left;
1703 }
1704
1705 /*
1706 * Pauses a transfer without losing data. Enables power save.
1707 * Use this function in conjunction with coh901318_resume.
1708 */
1709 static void coh901318_pause(struct dma_chan *chan)
1710 {
1711 u32 val;
1712 unsigned long flags;
1713 struct coh901318_chan *cohc = to_coh901318_chan(chan);
1714 int channel = cohc->id;
1715 void __iomem *virtbase = cohc->base->virtbase;
1716
1717 spin_lock_irqsave(&cohc->lock, flags);
1718
1719 /* Disable channel in HW */
1720 val = readl(virtbase + COH901318_CX_CFG +
1721 COH901318_CX_CFG_SPACING * channel);
1722
1723 /* Stopping infinite transfer */
1724 if ((val & COH901318_CX_CTRL_TC_ENABLE) == 0 &&
1725 (val & COH901318_CX_CFG_CH_ENABLE))
1726 cohc->stopped = 1;
1727
1728
1729 val &= ~COH901318_CX_CFG_CH_ENABLE;
1730 /* Enable twice, HW bug work around */
1731 writel(val, virtbase + COH901318_CX_CFG +
1732 COH901318_CX_CFG_SPACING * channel);
1733 writel(val, virtbase + COH901318_CX_CFG +
1734 COH901318_CX_CFG_SPACING * channel);
1735
1736 /* Spin-wait for it to actually go inactive */
1737 while (readl(virtbase + COH901318_CX_STAT+COH901318_CX_STAT_SPACING *
1738 channel) & COH901318_CX_STAT_ACTIVE)
1739 cpu_relax();
1740
1741 /* Check if we stopped an active job */
1742 if ((readl(virtbase + COH901318_CX_CTRL+COH901318_CX_CTRL_SPACING *
1743 channel) & COH901318_CX_CTRL_TC_VALUE_MASK) > 0)
1744 cohc->stopped = 1;
1745
1746 enable_powersave(cohc);
1747
1748 spin_unlock_irqrestore(&cohc->lock, flags);
1749 }
1750
1751 /* Resumes a transfer that has been stopped via 300_dma_stop(..).
1752 Power save is handled.
1753 */
1754 static void coh901318_resume(struct dma_chan *chan)
1755 {
1756 u32 val;
1757 unsigned long flags;
1758 struct coh901318_chan *cohc = to_coh901318_chan(chan);
1759 int channel = cohc->id;
1760
1761 spin_lock_irqsave(&cohc->lock, flags);
1762
1763 disable_powersave(cohc);
1764
1765 if (cohc->stopped) {
1766 /* Enable channel in HW */
1767 val = readl(cohc->base->virtbase + COH901318_CX_CFG +
1768 COH901318_CX_CFG_SPACING * channel);
1769
1770 val |= COH901318_CX_CFG_CH_ENABLE;
1771
1772 writel(val, cohc->base->virtbase + COH901318_CX_CFG +
1773 COH901318_CX_CFG_SPACING*channel);
1774
1775 cohc->stopped = 0;
1776 }
1777
1778 spin_unlock_irqrestore(&cohc->lock, flags);
1779 }
1780
1781 bool coh901318_filter_id(struct dma_chan *chan, void *chan_id)
1782 {
1783 unsigned int ch_nr = (unsigned int) chan_id;
1784
1785 if (ch_nr == to_coh901318_chan(chan)->id)
1786 return true;
1787
1788 return false;
1789 }
1790 EXPORT_SYMBOL(coh901318_filter_id);
1791
1792 struct coh901318_filter_args {
1793 struct coh901318_base *base;
1794 unsigned int ch_nr;
1795 };
1796
1797 static bool coh901318_filter_base_and_id(struct dma_chan *chan, void *data)
1798 {
1799 struct coh901318_filter_args *args = data;
1800
1801 if (&args->base->dma_slave == chan->device &&
1802 args->ch_nr == to_coh901318_chan(chan)->id)
1803 return true;
1804
1805 return false;
1806 }
1807
1808 static struct dma_chan *coh901318_xlate(struct of_phandle_args *dma_spec,
1809 struct of_dma *ofdma)
1810 {
1811 struct coh901318_filter_args args = {
1812 .base = ofdma->of_dma_data,
1813 .ch_nr = dma_spec->args[0],
1814 };
1815 dma_cap_mask_t cap;
1816 dma_cap_zero(cap);
1817 dma_cap_set(DMA_SLAVE, cap);
1818
1819 return dma_request_channel(cap, coh901318_filter_base_and_id, &args);
1820 }
1821 /*
1822 * DMA channel allocation
1823 */
1824 static int coh901318_config(struct coh901318_chan *cohc,
1825 struct coh901318_params *param)
1826 {
1827 unsigned long flags;
1828 const struct coh901318_params *p;
1829 int channel = cohc->id;
1830 void __iomem *virtbase = cohc->base->virtbase;
1831
1832 spin_lock_irqsave(&cohc->lock, flags);
1833
1834 if (param)
1835 p = param;
1836 else
1837 p = cohc_chan_param(cohc);
1838
1839 /* Clear any pending BE or TC interrupt */
1840 if (channel < 32) {
1841 writel(1 << channel, virtbase + COH901318_BE_INT_CLEAR1);
1842 writel(1 << channel, virtbase + COH901318_TC_INT_CLEAR1);
1843 } else {
1844 writel(1 << (channel - 32), virtbase +
1845 COH901318_BE_INT_CLEAR2);
1846 writel(1 << (channel - 32), virtbase +
1847 COH901318_TC_INT_CLEAR2);
1848 }
1849
1850 coh901318_set_conf(cohc, p->config);
1851 coh901318_set_ctrl(cohc, p->ctrl_lli_last);
1852
1853 spin_unlock_irqrestore(&cohc->lock, flags);
1854
1855 return 0;
1856 }
1857
1858 /* must lock when calling this function
1859 * start queued jobs, if any
1860 * TODO: start all queued jobs in one go
1861 *
1862 * Returns descriptor if queued job is started otherwise NULL.
1863 * If the queue is empty NULL is returned.
1864 */
1865 static struct coh901318_desc *coh901318_queue_start(struct coh901318_chan *cohc)
1866 {
1867 struct coh901318_desc *cohd;
1868
1869 /*
1870 * start queued jobs, if any
1871 * TODO: transmit all queued jobs in one go
1872 */
1873 cohd = coh901318_first_queued(cohc);
1874
1875 if (cohd != NULL) {
1876 /* Remove from queue */
1877 coh901318_desc_remove(cohd);
1878 /* initiate DMA job */
1879 cohc->busy = 1;
1880
1881 coh901318_desc_submit(cohc, cohd);
1882
1883 /* Program the transaction head */
1884 coh901318_set_conf(cohc, cohd->head_config);
1885 coh901318_set_ctrl(cohc, cohd->head_ctrl);
1886 coh901318_prep_linked_list(cohc, cohd->lli);
1887
1888 /* start dma job on this channel */
1889 coh901318_start(cohc);
1890
1891 }
1892
1893 return cohd;
1894 }
1895
1896 /*
1897 * This tasklet is called from the interrupt handler to
1898 * handle each descriptor (DMA job) that is sent to a channel.
1899 */
1900 static void dma_tasklet(unsigned long data)
1901 {
1902 struct coh901318_chan *cohc = (struct coh901318_chan *) data;
1903 struct coh901318_desc *cohd_fin;
1904 unsigned long flags;
1905 dma_async_tx_callback callback;
1906 void *callback_param;
1907
1908 dev_vdbg(COHC_2_DEV(cohc), "[%s] chan_id %d"
1909 " nbr_active_done %ld\n", __func__,
1910 cohc->id, cohc->nbr_active_done);
1911
1912 spin_lock_irqsave(&cohc->lock, flags);
1913
1914 /* get first active descriptor entry from list */
1915 cohd_fin = coh901318_first_active_get(cohc);
1916
1917 if (cohd_fin == NULL)
1918 goto err;
1919
1920 /* locate callback to client */
1921 callback = cohd_fin->desc.callback;
1922 callback_param = cohd_fin->desc.callback_param;
1923
1924 /* sign this job as completed on the channel */
1925 dma_cookie_complete(&cohd_fin->desc);
1926
1927 /* release the lli allocation and remove the descriptor */
1928 coh901318_lli_free(&cohc->base->pool, &cohd_fin->lli);
1929
1930 /* return desc to free-list */
1931 coh901318_desc_remove(cohd_fin);
1932 coh901318_desc_free(cohc, cohd_fin);
1933
1934 spin_unlock_irqrestore(&cohc->lock, flags);
1935
1936 /* Call the callback when we're done */
1937 if (callback)
1938 callback(callback_param);
1939
1940 spin_lock_irqsave(&cohc->lock, flags);
1941
1942 /*
1943 * If another interrupt fired while the tasklet was scheduling,
1944 * we don't get called twice, so we have this number of active
1945 * counter that keep track of the number of IRQs expected to
1946 * be handled for this channel. If there happen to be more than
1947 * one IRQ to be ack:ed, we simply schedule this tasklet again.
1948 */
1949 cohc->nbr_active_done--;
1950 if (cohc->nbr_active_done) {
1951 dev_dbg(COHC_2_DEV(cohc), "scheduling tasklet again, new IRQs "
1952 "came in while we were scheduling this tasklet\n");
1953 if (cohc_chan_conf(cohc)->priority_high)
1954 tasklet_hi_schedule(&cohc->tasklet);
1955 else
1956 tasklet_schedule(&cohc->tasklet);
1957 }
1958
1959 spin_unlock_irqrestore(&cohc->lock, flags);
1960
1961 return;
1962
1963 err:
1964 spin_unlock_irqrestore(&cohc->lock, flags);
1965 dev_err(COHC_2_DEV(cohc), "[%s] No active dma desc\n", __func__);
1966 }
1967
1968
1969 /* called from interrupt context */
1970 static void dma_tc_handle(struct coh901318_chan *cohc)
1971 {
1972 /*
1973 * If the channel is not allocated, then we shouldn't have
1974 * any TC interrupts on it.
1975 */
1976 if (!cohc->allocated) {
1977 dev_err(COHC_2_DEV(cohc), "spurious interrupt from "
1978 "unallocated channel\n");
1979 return;
1980 }
1981
1982 spin_lock(&cohc->lock);
1983
1984 /*
1985 * When we reach this point, at least one queue item
1986 * should have been moved over from cohc->queue to
1987 * cohc->active and run to completion, that is why we're
1988 * getting a terminal count interrupt is it not?
1989 * If you get this BUG() the most probable cause is that
1990 * the individual nodes in the lli chain have IRQ enabled,
1991 * so check your platform config for lli chain ctrl.
1992 */
1993 BUG_ON(list_empty(&cohc->active));
1994
1995 cohc->nbr_active_done++;
1996
1997 /*
1998 * This attempt to take a job from cohc->queue, put it
1999 * into cohc->active and start it.
2000 */
2001 if (coh901318_queue_start(cohc) == NULL)
2002 cohc->busy = 0;
2003
2004 spin_unlock(&cohc->lock);
2005
2006 /*
2007 * This tasklet will remove items from cohc->active
2008 * and thus terminates them.
2009 */
2010 if (cohc_chan_conf(cohc)->priority_high)
2011 tasklet_hi_schedule(&cohc->tasklet);
2012 else
2013 tasklet_schedule(&cohc->tasklet);
2014 }
2015
2016
2017 static irqreturn_t dma_irq_handler(int irq, void *dev_id)
2018 {
2019 u32 status1;
2020 u32 status2;
2021 int i;
2022 int ch;
2023 struct coh901318_base *base = dev_id;
2024 struct coh901318_chan *cohc;
2025 void __iomem *virtbase = base->virtbase;
2026
2027 status1 = readl(virtbase + COH901318_INT_STATUS1);
2028 status2 = readl(virtbase + COH901318_INT_STATUS2);
2029
2030 if (unlikely(status1 == 0 && status2 == 0)) {
2031 dev_warn(base->dev, "spurious DMA IRQ from no channel!\n");
2032 return IRQ_HANDLED;
2033 }
2034
2035 /* TODO: consider handle IRQ in tasklet here to
2036 * minimize interrupt latency */
2037
2038 /* Check the first 32 DMA channels for IRQ */
2039 while (status1) {
2040 /* Find first bit set, return as a number. */
2041 i = ffs(status1) - 1;
2042 ch = i;
2043
2044 cohc = &base->chans[ch];
2045 spin_lock(&cohc->lock);
2046
2047 /* Mask off this bit */
2048 status1 &= ~(1 << i);
2049 /* Check the individual channel bits */
2050 if (test_bit(i, virtbase + COH901318_BE_INT_STATUS1)) {
2051 dev_crit(COHC_2_DEV(cohc),
2052 "DMA bus error on channel %d!\n", ch);
2053 BUG_ON(1);
2054 /* Clear BE interrupt */
2055 __set_bit(i, virtbase + COH901318_BE_INT_CLEAR1);
2056 } else {
2057 /* Caused by TC, really? */
2058 if (unlikely(!test_bit(i, virtbase +
2059 COH901318_TC_INT_STATUS1))) {
2060 dev_warn(COHC_2_DEV(cohc),
2061 "ignoring interrupt not caused by terminal count on channel %d\n", ch);
2062 /* Clear TC interrupt */
2063 BUG_ON(1);
2064 __set_bit(i, virtbase + COH901318_TC_INT_CLEAR1);
2065 } else {
2066 /* Enable powersave if transfer has finished */
2067 if (!(readl(virtbase + COH901318_CX_STAT +
2068 COH901318_CX_STAT_SPACING*ch) &
2069 COH901318_CX_STAT_ENABLED)) {
2070 enable_powersave(cohc);
2071 }
2072
2073 /* Must clear TC interrupt before calling
2074 * dma_tc_handle
2075 * in case tc_handle initiate a new dma job
2076 */
2077 __set_bit(i, virtbase + COH901318_TC_INT_CLEAR1);
2078
2079 dma_tc_handle(cohc);
2080 }
2081 }
2082 spin_unlock(&cohc->lock);
2083 }
2084
2085 /* Check the remaining 32 DMA channels for IRQ */
2086 while (status2) {
2087 /* Find first bit set, return as a number. */
2088 i = ffs(status2) - 1;
2089 ch = i + 32;
2090 cohc = &base->chans[ch];
2091 spin_lock(&cohc->lock);
2092
2093 /* Mask off this bit */
2094 status2 &= ~(1 << i);
2095 /* Check the individual channel bits */
2096 if (test_bit(i, virtbase + COH901318_BE_INT_STATUS2)) {
2097 dev_crit(COHC_2_DEV(cohc),
2098 "DMA bus error on channel %d!\n", ch);
2099 /* Clear BE interrupt */
2100 BUG_ON(1);
2101 __set_bit(i, virtbase + COH901318_BE_INT_CLEAR2);
2102 } else {
2103 /* Caused by TC, really? */
2104 if (unlikely(!test_bit(i, virtbase +
2105 COH901318_TC_INT_STATUS2))) {
2106 dev_warn(COHC_2_DEV(cohc),
2107 "ignoring interrupt not caused by terminal count on channel %d\n", ch);
2108 /* Clear TC interrupt */
2109 __set_bit(i, virtbase + COH901318_TC_INT_CLEAR2);
2110 BUG_ON(1);
2111 } else {
2112 /* Enable powersave if transfer has finished */
2113 if (!(readl(virtbase + COH901318_CX_STAT +
2114 COH901318_CX_STAT_SPACING*ch) &
2115 COH901318_CX_STAT_ENABLED)) {
2116 enable_powersave(cohc);
2117 }
2118 /* Must clear TC interrupt before calling
2119 * dma_tc_handle
2120 * in case tc_handle initiate a new dma job
2121 */
2122 __set_bit(i, virtbase + COH901318_TC_INT_CLEAR2);
2123
2124 dma_tc_handle(cohc);
2125 }
2126 }
2127 spin_unlock(&cohc->lock);
2128 }
2129
2130 return IRQ_HANDLED;
2131 }
2132
2133 static int coh901318_alloc_chan_resources(struct dma_chan *chan)
2134 {
2135 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2136 unsigned long flags;
2137
2138 dev_vdbg(COHC_2_DEV(cohc), "[%s] DMA channel %d\n",
2139 __func__, cohc->id);
2140
2141 if (chan->client_count > 1)
2142 return -EBUSY;
2143
2144 spin_lock_irqsave(&cohc->lock, flags);
2145
2146 coh901318_config(cohc, NULL);
2147
2148 cohc->allocated = 1;
2149 dma_cookie_init(chan);
2150
2151 spin_unlock_irqrestore(&cohc->lock, flags);
2152
2153 return 1;
2154 }
2155
2156 static void
2157 coh901318_free_chan_resources(struct dma_chan *chan)
2158 {
2159 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2160 int channel = cohc->id;
2161 unsigned long flags;
2162
2163 spin_lock_irqsave(&cohc->lock, flags);
2164
2165 /* Disable HW */
2166 writel(0x00000000U, cohc->base->virtbase + COH901318_CX_CFG +
2167 COH901318_CX_CFG_SPACING*channel);
2168 writel(0x00000000U, cohc->base->virtbase + COH901318_CX_CTRL +
2169 COH901318_CX_CTRL_SPACING*channel);
2170
2171 cohc->allocated = 0;
2172
2173 spin_unlock_irqrestore(&cohc->lock, flags);
2174
2175 chan->device->device_control(chan, DMA_TERMINATE_ALL, 0);
2176 }
2177
2178
2179 static dma_cookie_t
2180 coh901318_tx_submit(struct dma_async_tx_descriptor *tx)
2181 {
2182 struct coh901318_desc *cohd = container_of(tx, struct coh901318_desc,
2183 desc);
2184 struct coh901318_chan *cohc = to_coh901318_chan(tx->chan);
2185 unsigned long flags;
2186 dma_cookie_t cookie;
2187
2188 spin_lock_irqsave(&cohc->lock, flags);
2189 cookie = dma_cookie_assign(tx);
2190
2191 coh901318_desc_queue(cohc, cohd);
2192
2193 spin_unlock_irqrestore(&cohc->lock, flags);
2194
2195 return cookie;
2196 }
2197
2198 static struct dma_async_tx_descriptor *
2199 coh901318_prep_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
2200 size_t size, unsigned long flags)
2201 {
2202 struct coh901318_lli *lli;
2203 struct coh901318_desc *cohd;
2204 unsigned long flg;
2205 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2206 int lli_len;
2207 u32 ctrl_last = cohc_chan_param(cohc)->ctrl_lli_last;
2208 int ret;
2209
2210 spin_lock_irqsave(&cohc->lock, flg);
2211
2212 dev_vdbg(COHC_2_DEV(cohc),
2213 "[%s] channel %d src 0x%x dest 0x%x size %d\n",
2214 __func__, cohc->id, src, dest, size);
2215
2216 if (flags & DMA_PREP_INTERRUPT)
2217 /* Trigger interrupt after last lli */
2218 ctrl_last |= COH901318_CX_CTRL_TC_IRQ_ENABLE;
2219
2220 lli_len = size >> MAX_DMA_PACKET_SIZE_SHIFT;
2221 if ((lli_len << MAX_DMA_PACKET_SIZE_SHIFT) < size)
2222 lli_len++;
2223
2224 lli = coh901318_lli_alloc(&cohc->base->pool, lli_len);
2225
2226 if (lli == NULL)
2227 goto err;
2228
2229 ret = coh901318_lli_fill_memcpy(
2230 &cohc->base->pool, lli, src, size, dest,
2231 cohc_chan_param(cohc)->ctrl_lli_chained,
2232 ctrl_last);
2233 if (ret)
2234 goto err;
2235
2236 COH_DBG(coh901318_list_print(cohc, lli));
2237
2238 /* Pick a descriptor to handle this transfer */
2239 cohd = coh901318_desc_get(cohc);
2240 cohd->lli = lli;
2241 cohd->flags = flags;
2242 cohd->desc.tx_submit = coh901318_tx_submit;
2243
2244 spin_unlock_irqrestore(&cohc->lock, flg);
2245
2246 return &cohd->desc;
2247 err:
2248 spin_unlock_irqrestore(&cohc->lock, flg);
2249 return NULL;
2250 }
2251
2252 static struct dma_async_tx_descriptor *
2253 coh901318_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
2254 unsigned int sg_len, enum dma_transfer_direction direction,
2255 unsigned long flags, void *context)
2256 {
2257 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2258 struct coh901318_lli *lli;
2259 struct coh901318_desc *cohd;
2260 const struct coh901318_params *params;
2261 struct scatterlist *sg;
2262 int len = 0;
2263 int size;
2264 int i;
2265 u32 ctrl_chained = cohc_chan_param(cohc)->ctrl_lli_chained;
2266 u32 ctrl = cohc_chan_param(cohc)->ctrl_lli;
2267 u32 ctrl_last = cohc_chan_param(cohc)->ctrl_lli_last;
2268 u32 config;
2269 unsigned long flg;
2270 int ret;
2271
2272 if (!sgl)
2273 goto out;
2274 if (sg_dma_len(sgl) == 0)
2275 goto out;
2276
2277 spin_lock_irqsave(&cohc->lock, flg);
2278
2279 dev_vdbg(COHC_2_DEV(cohc), "[%s] sg_len %d dir %d\n",
2280 __func__, sg_len, direction);
2281
2282 if (flags & DMA_PREP_INTERRUPT)
2283 /* Trigger interrupt after last lli */
2284 ctrl_last |= COH901318_CX_CTRL_TC_IRQ_ENABLE;
2285
2286 params = cohc_chan_param(cohc);
2287 config = params->config;
2288 /*
2289 * Add runtime-specific control on top, make
2290 * sure the bits you set per peripheral channel are
2291 * cleared in the default config from the platform.
2292 */
2293 ctrl_chained |= cohc->ctrl;
2294 ctrl_last |= cohc->ctrl;
2295 ctrl |= cohc->ctrl;
2296
2297 if (direction == DMA_MEM_TO_DEV) {
2298 u32 tx_flags = COH901318_CX_CTRL_PRDD_SOURCE |
2299 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE;
2300
2301 config |= COH901318_CX_CFG_RM_MEMORY_TO_PRIMARY;
2302 ctrl_chained |= tx_flags;
2303 ctrl_last |= tx_flags;
2304 ctrl |= tx_flags;
2305 } else if (direction == DMA_DEV_TO_MEM) {
2306 u32 rx_flags = COH901318_CX_CTRL_PRDD_DEST |
2307 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE;
2308
2309 config |= COH901318_CX_CFG_RM_PRIMARY_TO_MEMORY;
2310 ctrl_chained |= rx_flags;
2311 ctrl_last |= rx_flags;
2312 ctrl |= rx_flags;
2313 } else
2314 goto err_direction;
2315
2316 /* The dma only supports transmitting packages up to
2317 * MAX_DMA_PACKET_SIZE. Calculate to total number of
2318 * dma elemts required to send the entire sg list
2319 */
2320 for_each_sg(sgl, sg, sg_len, i) {
2321 unsigned int factor;
2322 size = sg_dma_len(sg);
2323
2324 if (size <= MAX_DMA_PACKET_SIZE) {
2325 len++;
2326 continue;
2327 }
2328
2329 factor = size >> MAX_DMA_PACKET_SIZE_SHIFT;
2330 if ((factor << MAX_DMA_PACKET_SIZE_SHIFT) < size)
2331 factor++;
2332
2333 len += factor;
2334 }
2335
2336 pr_debug("Allocate %d lli:s for this transfer\n", len);
2337 lli = coh901318_lli_alloc(&cohc->base->pool, len);
2338
2339 if (lli == NULL)
2340 goto err_dma_alloc;
2341
2342 /* initiate allocated lli list */
2343 ret = coh901318_lli_fill_sg(&cohc->base->pool, lli, sgl, sg_len,
2344 cohc->addr,
2345 ctrl_chained,
2346 ctrl,
2347 ctrl_last,
2348 direction, COH901318_CX_CTRL_TC_IRQ_ENABLE);
2349 if (ret)
2350 goto err_lli_fill;
2351
2352
2353 COH_DBG(coh901318_list_print(cohc, lli));
2354
2355 /* Pick a descriptor to handle this transfer */
2356 cohd = coh901318_desc_get(cohc);
2357 cohd->head_config = config;
2358 /*
2359 * Set the default head ctrl for the channel to the one from the
2360 * lli, things may have changed due to odd buffer alignment
2361 * etc.
2362 */
2363 cohd->head_ctrl = lli->control;
2364 cohd->dir = direction;
2365 cohd->flags = flags;
2366 cohd->desc.tx_submit = coh901318_tx_submit;
2367 cohd->lli = lli;
2368
2369 spin_unlock_irqrestore(&cohc->lock, flg);
2370
2371 return &cohd->desc;
2372 err_lli_fill:
2373 err_dma_alloc:
2374 err_direction:
2375 spin_unlock_irqrestore(&cohc->lock, flg);
2376 out:
2377 return NULL;
2378 }
2379
2380 static enum dma_status
2381 coh901318_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
2382 struct dma_tx_state *txstate)
2383 {
2384 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2385 enum dma_status ret;
2386
2387 ret = dma_cookie_status(chan, cookie, txstate);
2388 if (ret == DMA_SUCCESS)
2389 return ret;
2390
2391 dma_set_residue(txstate, coh901318_get_bytes_left(chan));
2392
2393 if (ret == DMA_IN_PROGRESS && cohc->stopped)
2394 ret = DMA_PAUSED;
2395
2396 return ret;
2397 }
2398
2399 static void
2400 coh901318_issue_pending(struct dma_chan *chan)
2401 {
2402 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2403 unsigned long flags;
2404
2405 spin_lock_irqsave(&cohc->lock, flags);
2406
2407 /*
2408 * Busy means that pending jobs are already being processed,
2409 * and then there is no point in starting the queue: the
2410 * terminal count interrupt on the channel will take the next
2411 * job on the queue and execute it anyway.
2412 */
2413 if (!cohc->busy)
2414 coh901318_queue_start(cohc);
2415
2416 spin_unlock_irqrestore(&cohc->lock, flags);
2417 }
2418
2419 /*
2420 * Here we wrap in the runtime dma control interface
2421 */
2422 struct burst_table {
2423 int burst_8bit;
2424 int burst_16bit;
2425 int burst_32bit;
2426 u32 reg;
2427 };
2428
2429 static const struct burst_table burst_sizes[] = {
2430 {
2431 .burst_8bit = 64,
2432 .burst_16bit = 32,
2433 .burst_32bit = 16,
2434 .reg = COH901318_CX_CTRL_BURST_COUNT_64_BYTES,
2435 },
2436 {
2437 .burst_8bit = 48,
2438 .burst_16bit = 24,
2439 .burst_32bit = 12,
2440 .reg = COH901318_CX_CTRL_BURST_COUNT_48_BYTES,
2441 },
2442 {
2443 .burst_8bit = 32,
2444 .burst_16bit = 16,
2445 .burst_32bit = 8,
2446 .reg = COH901318_CX_CTRL_BURST_COUNT_32_BYTES,
2447 },
2448 {
2449 .burst_8bit = 16,
2450 .burst_16bit = 8,
2451 .burst_32bit = 4,
2452 .reg = COH901318_CX_CTRL_BURST_COUNT_16_BYTES,
2453 },
2454 {
2455 .burst_8bit = 8,
2456 .burst_16bit = 4,
2457 .burst_32bit = 2,
2458 .reg = COH901318_CX_CTRL_BURST_COUNT_8_BYTES,
2459 },
2460 {
2461 .burst_8bit = 4,
2462 .burst_16bit = 2,
2463 .burst_32bit = 1,
2464 .reg = COH901318_CX_CTRL_BURST_COUNT_4_BYTES,
2465 },
2466 {
2467 .burst_8bit = 2,
2468 .burst_16bit = 1,
2469 .burst_32bit = 0,
2470 .reg = COH901318_CX_CTRL_BURST_COUNT_2_BYTES,
2471 },
2472 {
2473 .burst_8bit = 1,
2474 .burst_16bit = 0,
2475 .burst_32bit = 0,
2476 .reg = COH901318_CX_CTRL_BURST_COUNT_1_BYTE,
2477 },
2478 };
2479
2480 static void coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
2481 struct dma_slave_config *config)
2482 {
2483 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2484 dma_addr_t addr;
2485 enum dma_slave_buswidth addr_width;
2486 u32 maxburst;
2487 u32 ctrl = 0;
2488 int i = 0;
2489
2490 /* We only support mem to per or per to mem transfers */
2491 if (config->direction == DMA_DEV_TO_MEM) {
2492 addr = config->src_addr;
2493 addr_width = config->src_addr_width;
2494 maxburst = config->src_maxburst;
2495 } else if (config->direction == DMA_MEM_TO_DEV) {
2496 addr = config->dst_addr;
2497 addr_width = config->dst_addr_width;
2498 maxburst = config->dst_maxburst;
2499 } else {
2500 dev_err(COHC_2_DEV(cohc), "illegal channel mode\n");
2501 return;
2502 }
2503
2504 dev_dbg(COHC_2_DEV(cohc), "configure channel for %d byte transfers\n",
2505 addr_width);
2506 switch (addr_width) {
2507 case DMA_SLAVE_BUSWIDTH_1_BYTE:
2508 ctrl |=
2509 COH901318_CX_CTRL_SRC_BUS_SIZE_8_BITS |
2510 COH901318_CX_CTRL_DST_BUS_SIZE_8_BITS;
2511
2512 while (i < ARRAY_SIZE(burst_sizes)) {
2513 if (burst_sizes[i].burst_8bit <= maxburst)
2514 break;
2515 i++;
2516 }
2517
2518 break;
2519 case DMA_SLAVE_BUSWIDTH_2_BYTES:
2520 ctrl |=
2521 COH901318_CX_CTRL_SRC_BUS_SIZE_16_BITS |
2522 COH901318_CX_CTRL_DST_BUS_SIZE_16_BITS;
2523
2524 while (i < ARRAY_SIZE(burst_sizes)) {
2525 if (burst_sizes[i].burst_16bit <= maxburst)
2526 break;
2527 i++;
2528 }
2529
2530 break;
2531 case DMA_SLAVE_BUSWIDTH_4_BYTES:
2532 /* Direction doesn't matter here, it's 32/32 bits */
2533 ctrl |=
2534 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
2535 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS;
2536
2537 while (i < ARRAY_SIZE(burst_sizes)) {
2538 if (burst_sizes[i].burst_32bit <= maxburst)
2539 break;
2540 i++;
2541 }
2542
2543 break;
2544 default:
2545 dev_err(COHC_2_DEV(cohc),
2546 "bad runtimeconfig: alien address width\n");
2547 return;
2548 }
2549
2550 ctrl |= burst_sizes[i].reg;
2551 dev_dbg(COHC_2_DEV(cohc),
2552 "selected burst size %d bytes for address width %d bytes, maxburst %d\n",
2553 burst_sizes[i].burst_8bit, addr_width, maxburst);
2554
2555 cohc->addr = addr;
2556 cohc->ctrl = ctrl;
2557 }
2558
2559 static int
2560 coh901318_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
2561 unsigned long arg)
2562 {
2563 unsigned long flags;
2564 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2565 struct coh901318_desc *cohd;
2566 void __iomem *virtbase = cohc->base->virtbase;
2567
2568 if (cmd == DMA_SLAVE_CONFIG) {
2569 struct dma_slave_config *config =
2570 (struct dma_slave_config *) arg;
2571
2572 coh901318_dma_set_runtimeconfig(chan, config);
2573 return 0;
2574 }
2575
2576 if (cmd == DMA_PAUSE) {
2577 coh901318_pause(chan);
2578 return 0;
2579 }
2580
2581 if (cmd == DMA_RESUME) {
2582 coh901318_resume(chan);
2583 return 0;
2584 }
2585
2586 if (cmd != DMA_TERMINATE_ALL)
2587 return -ENXIO;
2588
2589 /* The remainder of this function terminates the transfer */
2590 coh901318_pause(chan);
2591 spin_lock_irqsave(&cohc->lock, flags);
2592
2593 /* Clear any pending BE or TC interrupt */
2594 if (cohc->id < 32) {
2595 writel(1 << cohc->id, virtbase + COH901318_BE_INT_CLEAR1);
2596 writel(1 << cohc->id, virtbase + COH901318_TC_INT_CLEAR1);
2597 } else {
2598 writel(1 << (cohc->id - 32), virtbase +
2599 COH901318_BE_INT_CLEAR2);
2600 writel(1 << (cohc->id - 32), virtbase +
2601 COH901318_TC_INT_CLEAR2);
2602 }
2603
2604 enable_powersave(cohc);
2605
2606 while ((cohd = coh901318_first_active_get(cohc))) {
2607 /* release the lli allocation*/
2608 coh901318_lli_free(&cohc->base->pool, &cohd->lli);
2609
2610 /* return desc to free-list */
2611 coh901318_desc_remove(cohd);
2612 coh901318_desc_free(cohc, cohd);
2613 }
2614
2615 while ((cohd = coh901318_first_queued(cohc))) {
2616 /* release the lli allocation*/
2617 coh901318_lli_free(&cohc->base->pool, &cohd->lli);
2618
2619 /* return desc to free-list */
2620 coh901318_desc_remove(cohd);
2621 coh901318_desc_free(cohc, cohd);
2622 }
2623
2624
2625 cohc->nbr_active_done = 0;
2626 cohc->busy = 0;
2627
2628 spin_unlock_irqrestore(&cohc->lock, flags);
2629
2630 return 0;
2631 }
2632
2633 void coh901318_base_init(struct dma_device *dma, const int *pick_chans,
2634 struct coh901318_base *base)
2635 {
2636 int chans_i;
2637 int i = 0;
2638 struct coh901318_chan *cohc;
2639
2640 INIT_LIST_HEAD(&dma->channels);
2641
2642 for (chans_i = 0; pick_chans[chans_i] != -1; chans_i += 2) {
2643 for (i = pick_chans[chans_i]; i <= pick_chans[chans_i+1]; i++) {
2644 cohc = &base->chans[i];
2645
2646 cohc->base = base;
2647 cohc->chan.device = dma;
2648 cohc->id = i;
2649
2650 /* TODO: do we really need this lock if only one
2651 * client is connected to each channel?
2652 */
2653
2654 spin_lock_init(&cohc->lock);
2655
2656 cohc->nbr_active_done = 0;
2657 cohc->busy = 0;
2658 INIT_LIST_HEAD(&cohc->free);
2659 INIT_LIST_HEAD(&cohc->active);
2660 INIT_LIST_HEAD(&cohc->queue);
2661
2662 tasklet_init(&cohc->tasklet, dma_tasklet,
2663 (unsigned long) cohc);
2664
2665 list_add_tail(&cohc->chan.device_node,
2666 &dma->channels);
2667 }
2668 }
2669 }
2670
2671 static int __init coh901318_probe(struct platform_device *pdev)
2672 {
2673 int err = 0;
2674 struct coh901318_base *base;
2675 int irq;
2676 struct resource *io;
2677
2678 io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2679 if (!io)
2680 return -ENODEV;
2681
2682 /* Map DMA controller registers to virtual memory */
2683 if (devm_request_mem_region(&pdev->dev,
2684 io->start,
2685 resource_size(io),
2686 pdev->dev.driver->name) == NULL)
2687 return -ENOMEM;
2688
2689 base = devm_kzalloc(&pdev->dev,
2690 ALIGN(sizeof(struct coh901318_base), 4) +
2691 U300_DMA_CHANNELS *
2692 sizeof(struct coh901318_chan),
2693 GFP_KERNEL);
2694 if (!base)
2695 return -ENOMEM;
2696
2697 base->chans = ((void *)base) + ALIGN(sizeof(struct coh901318_base), 4);
2698
2699 base->virtbase = devm_ioremap(&pdev->dev, io->start, resource_size(io));
2700 if (!base->virtbase)
2701 return -ENOMEM;
2702
2703 base->dev = &pdev->dev;
2704 spin_lock_init(&base->pm.lock);
2705 base->pm.started_channels = 0;
2706
2707 COH901318_DEBUGFS_ASSIGN(debugfs_dma_base, base);
2708
2709 irq = platform_get_irq(pdev, 0);
2710 if (irq < 0)
2711 return irq;
2712
2713 err = devm_request_irq(&pdev->dev, irq, dma_irq_handler, IRQF_DISABLED,
2714 "coh901318", base);
2715 if (err)
2716 return err;
2717
2718 err = coh901318_pool_create(&base->pool, &pdev->dev,
2719 sizeof(struct coh901318_lli),
2720 32);
2721 if (err)
2722 return err;
2723
2724 /* init channels for device transfers */
2725 coh901318_base_init(&base->dma_slave, dma_slave_channels,
2726 base);
2727
2728 dma_cap_zero(base->dma_slave.cap_mask);
2729 dma_cap_set(DMA_SLAVE, base->dma_slave.cap_mask);
2730
2731 base->dma_slave.device_alloc_chan_resources = coh901318_alloc_chan_resources;
2732 base->dma_slave.device_free_chan_resources = coh901318_free_chan_resources;
2733 base->dma_slave.device_prep_slave_sg = coh901318_prep_slave_sg;
2734 base->dma_slave.device_tx_status = coh901318_tx_status;
2735 base->dma_slave.device_issue_pending = coh901318_issue_pending;
2736 base->dma_slave.device_control = coh901318_control;
2737 base->dma_slave.dev = &pdev->dev;
2738
2739 err = dma_async_device_register(&base->dma_slave);
2740
2741 if (err)
2742 goto err_register_slave;
2743
2744 /* init channels for memcpy */
2745 coh901318_base_init(&base->dma_memcpy, dma_memcpy_channels,
2746 base);
2747
2748 dma_cap_zero(base->dma_memcpy.cap_mask);
2749 dma_cap_set(DMA_MEMCPY, base->dma_memcpy.cap_mask);
2750
2751 base->dma_memcpy.device_alloc_chan_resources = coh901318_alloc_chan_resources;
2752 base->dma_memcpy.device_free_chan_resources = coh901318_free_chan_resources;
2753 base->dma_memcpy.device_prep_dma_memcpy = coh901318_prep_memcpy;
2754 base->dma_memcpy.device_tx_status = coh901318_tx_status;
2755 base->dma_memcpy.device_issue_pending = coh901318_issue_pending;
2756 base->dma_memcpy.device_control = coh901318_control;
2757 base->dma_memcpy.dev = &pdev->dev;
2758 /*
2759 * This controller can only access address at even 32bit boundaries,
2760 * i.e. 2^2
2761 */
2762 base->dma_memcpy.copy_align = 2;
2763 err = dma_async_device_register(&base->dma_memcpy);
2764
2765 if (err)
2766 goto err_register_memcpy;
2767
2768 err = of_dma_controller_register(pdev->dev.of_node, coh901318_xlate,
2769 base);
2770 if (err)
2771 goto err_register_of_dma;
2772
2773 platform_set_drvdata(pdev, base);
2774 dev_info(&pdev->dev, "Initialized COH901318 DMA on virtual base 0x%08x\n",
2775 (u32) base->virtbase);
2776
2777 return err;
2778
2779 err_register_of_dma:
2780 dma_async_device_unregister(&base->dma_memcpy);
2781 err_register_memcpy:
2782 dma_async_device_unregister(&base->dma_slave);
2783 err_register_slave:
2784 coh901318_pool_destroy(&base->pool);
2785 return err;
2786 }
2787
2788 static int coh901318_remove(struct platform_device *pdev)
2789 {
2790 struct coh901318_base *base = platform_get_drvdata(pdev);
2791
2792 of_dma_controller_free(pdev->dev.of_node);
2793 dma_async_device_unregister(&base->dma_memcpy);
2794 dma_async_device_unregister(&base->dma_slave);
2795 coh901318_pool_destroy(&base->pool);
2796 return 0;
2797 }
2798
2799 static const struct of_device_id coh901318_dt_match[] = {
2800 { .compatible = "stericsson,coh901318" },
2801 {},
2802 };
2803
2804 static struct platform_driver coh901318_driver = {
2805 .remove = coh901318_remove,
2806 .driver = {
2807 .name = "coh901318",
2808 .of_match_table = coh901318_dt_match,
2809 },
2810 };
2811
2812 int __init coh901318_init(void)
2813 {
2814 return platform_driver_probe(&coh901318_driver, coh901318_probe);
2815 }
2816 subsys_initcall(coh901318_init);
2817
2818 void __exit coh901318_exit(void)
2819 {
2820 platform_driver_unregister(&coh901318_driver);
2821 }
2822 module_exit(coh901318_exit);
2823
2824 MODULE_LICENSE("GPL");
2825 MODULE_AUTHOR("Per Friden");
Linux kernel - Deliverables
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