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
coh901318_list_print(struct coh901318_chan * cohc,struct coh901318_lli * lli)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
coh901318_debugfs_read(struct file * file,char __user * buf,size_t count,loff_t * f_pos)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
init_coh901318_debugfs(void)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
exit_coh901318_debugfs(void)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
to_coh901318_chan(struct dma_chan * chan)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 *
cohc_chan_param(struct coh901318_chan * cohc)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 *
cohc_chan_conf(struct coh901318_chan * cohc)1412 cohc_chan_conf(struct coh901318_chan *cohc)
1413 {
1414 return &chan_config[cohc->id];
1415 }
1416
enable_powersave(struct coh901318_chan * cohc)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 }
disable_powersave(struct coh901318_chan * cohc)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
coh901318_set_ctrl(struct coh901318_chan * cohc,u32 control)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
coh901318_set_conf(struct coh901318_chan * cohc,u32 conf)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
coh901318_start(struct coh901318_chan * cohc)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
coh901318_prep_linked_list(struct coh901318_chan * cohc,struct coh901318_lli * lli)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 *
coh901318_desc_get(struct coh901318_chan * cohc)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
coh901318_desc_free(struct coh901318_chan * cohc,struct coh901318_desc * cohd)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
coh901318_desc_submit(struct coh901318_chan * cohc,struct coh901318_desc * desc)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 *
coh901318_first_active_get(struct coh901318_chan * cohc)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
coh901318_desc_remove(struct coh901318_desc * cohd)1562 coh901318_desc_remove(struct coh901318_desc *cohd)
1563 {
1564 list_del(&cohd->node);
1565 }
1566
1567 static void
coh901318_desc_queue(struct coh901318_chan * cohc,struct coh901318_desc * desc)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 *
coh901318_first_queued(struct coh901318_chan * cohc)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
coh901318_get_bytes_in_lli(struct coh901318_lli * in_lli)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 */
coh901318_get_bytes_left(struct dma_chan * chan)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 */
coh901318_pause(struct dma_chan * chan)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 */
coh901318_resume(struct dma_chan * chan)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
coh901318_filter_id(struct dma_chan * chan,void * chan_id)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
coh901318_filter_base_and_id(struct dma_chan * chan,void * data)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
coh901318_xlate(struct of_phandle_args * dma_spec,struct of_dma * ofdma)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 */
coh901318_config(struct coh901318_chan * cohc,struct coh901318_params * param)1797 static int coh901318_config(struct coh901318_chan *cohc,
1798 struct coh901318_params *param)
1799 {
1800 unsigned long flags;
1801 const struct coh901318_params *p;
1802 int channel = cohc->id;
1803 void __iomem *virtbase = cohc->base->virtbase;
1804
1805 spin_lock_irqsave(&cohc->lock, flags);
1806
1807 if (param)
1808 p = param;
1809 else
1810 p = cohc_chan_param(cohc);
1811
1812 /* Clear any pending BE or TC interrupt */
1813 if (channel < 32) {
1814 writel(1 << channel, virtbase + COH901318_BE_INT_CLEAR1);
1815 writel(1 << channel, virtbase + COH901318_TC_INT_CLEAR1);
1816 } else {
1817 writel(1 << (channel - 32), virtbase +
1818 COH901318_BE_INT_CLEAR2);
1819 writel(1 << (channel - 32), virtbase +
1820 COH901318_TC_INT_CLEAR2);
1821 }
1822
1823 coh901318_set_conf(cohc, p->config);
1824 coh901318_set_ctrl(cohc, p->ctrl_lli_last);
1825
1826 spin_unlock_irqrestore(&cohc->lock, flags);
1827
1828 return 0;
1829 }
1830
1831 /* must lock when calling this function
1832 * start queued jobs, if any
1833 * TODO: start all queued jobs in one go
1834 *
1835 * Returns descriptor if queued job is started otherwise NULL.
1836 * If the queue is empty NULL is returned.
1837 */
coh901318_queue_start(struct coh901318_chan * cohc)1838 static struct coh901318_desc *coh901318_queue_start(struct coh901318_chan *cohc)
1839 {
1840 struct coh901318_desc *cohd;
1841
1842 /*
1843 * start queued jobs, if any
1844 * TODO: transmit all queued jobs in one go
1845 */
1846 cohd = coh901318_first_queued(cohc);
1847
1848 if (cohd != NULL) {
1849 /* Remove from queue */
1850 coh901318_desc_remove(cohd);
1851 /* initiate DMA job */
1852 cohc->busy = 1;
1853
1854 coh901318_desc_submit(cohc, cohd);
1855
1856 /* Program the transaction head */
1857 coh901318_set_conf(cohc, cohd->head_config);
1858 coh901318_set_ctrl(cohc, cohd->head_ctrl);
1859 coh901318_prep_linked_list(cohc, cohd->lli);
1860
1861 /* start dma job on this channel */
1862 coh901318_start(cohc);
1863
1864 }
1865
1866 return cohd;
1867 }
1868
1869 /*
1870 * This tasklet is called from the interrupt handler to
1871 * handle each descriptor (DMA job) that is sent to a channel.
1872 */
dma_tasklet(unsigned long data)1873 static void dma_tasklet(unsigned long data)
1874 {
1875 struct coh901318_chan *cohc = (struct coh901318_chan *) data;
1876 struct coh901318_desc *cohd_fin;
1877 unsigned long flags;
1878 struct dmaengine_desc_callback cb;
1879
1880 dev_vdbg(COHC_2_DEV(cohc), "[%s] chan_id %d"
1881 " nbr_active_done %ld\n", __func__,
1882 cohc->id, cohc->nbr_active_done);
1883
1884 spin_lock_irqsave(&cohc->lock, flags);
1885
1886 /* get first active descriptor entry from list */
1887 cohd_fin = coh901318_first_active_get(cohc);
1888
1889 if (cohd_fin == NULL)
1890 goto err;
1891
1892 /* locate callback to client */
1893 dmaengine_desc_get_callback(&cohd_fin->desc, &cb);
1894
1895 /* sign this job as completed on the channel */
1896 dma_cookie_complete(&cohd_fin->desc);
1897
1898 /* release the lli allocation and remove the descriptor */
1899 coh901318_lli_free(&cohc->base->pool, &cohd_fin->lli);
1900
1901 /* return desc to free-list */
1902 coh901318_desc_remove(cohd_fin);
1903 coh901318_desc_free(cohc, cohd_fin);
1904
1905 spin_unlock_irqrestore(&cohc->lock, flags);
1906
1907 /* Call the callback when we're done */
1908 dmaengine_desc_callback_invoke(&cb, NULL);
1909
1910 spin_lock_irqsave(&cohc->lock, flags);
1911
1912 /*
1913 * If another interrupt fired while the tasklet was scheduling,
1914 * we don't get called twice, so we have this number of active
1915 * counter that keep track of the number of IRQs expected to
1916 * be handled for this channel. If there happen to be more than
1917 * one IRQ to be ack:ed, we simply schedule this tasklet again.
1918 */
1919 cohc->nbr_active_done--;
1920 if (cohc->nbr_active_done) {
1921 dev_dbg(COHC_2_DEV(cohc), "scheduling tasklet again, new IRQs "
1922 "came in while we were scheduling this tasklet\n");
1923 if (cohc_chan_conf(cohc)->priority_high)
1924 tasklet_hi_schedule(&cohc->tasklet);
1925 else
1926 tasklet_schedule(&cohc->tasklet);
1927 }
1928
1929 spin_unlock_irqrestore(&cohc->lock, flags);
1930
1931 return;
1932
1933 err:
1934 spin_unlock_irqrestore(&cohc->lock, flags);
1935 dev_err(COHC_2_DEV(cohc), "[%s] No active dma desc\n", __func__);
1936 }
1937
1938
1939 /* called from interrupt context */
dma_tc_handle(struct coh901318_chan * cohc)1940 static void dma_tc_handle(struct coh901318_chan *cohc)
1941 {
1942 /*
1943 * If the channel is not allocated, then we shouldn't have
1944 * any TC interrupts on it.
1945 */
1946 if (!cohc->allocated) {
1947 dev_err(COHC_2_DEV(cohc), "spurious interrupt from "
1948 "unallocated channel\n");
1949 return;
1950 }
1951
1952 spin_lock(&cohc->lock);
1953
1954 /*
1955 * When we reach this point, at least one queue item
1956 * should have been moved over from cohc->queue to
1957 * cohc->active and run to completion, that is why we're
1958 * getting a terminal count interrupt is it not?
1959 * If you get this BUG() the most probable cause is that
1960 * the individual nodes in the lli chain have IRQ enabled,
1961 * so check your platform config for lli chain ctrl.
1962 */
1963 BUG_ON(list_empty(&cohc->active));
1964
1965 cohc->nbr_active_done++;
1966
1967 /*
1968 * This attempt to take a job from cohc->queue, put it
1969 * into cohc->active and start it.
1970 */
1971 if (coh901318_queue_start(cohc) == NULL)
1972 cohc->busy = 0;
1973
1974 spin_unlock(&cohc->lock);
1975
1976 /*
1977 * This tasklet will remove items from cohc->active
1978 * and thus terminates them.
1979 */
1980 if (cohc_chan_conf(cohc)->priority_high)
1981 tasklet_hi_schedule(&cohc->tasklet);
1982 else
1983 tasklet_schedule(&cohc->tasklet);
1984 }
1985
1986
dma_irq_handler(int irq,void * dev_id)1987 static irqreturn_t dma_irq_handler(int irq, void *dev_id)
1988 {
1989 u32 status1;
1990 u32 status2;
1991 int i;
1992 int ch;
1993 struct coh901318_base *base = dev_id;
1994 struct coh901318_chan *cohc;
1995 void __iomem *virtbase = base->virtbase;
1996
1997 status1 = readl(virtbase + COH901318_INT_STATUS1);
1998 status2 = readl(virtbase + COH901318_INT_STATUS2);
1999
2000 if (unlikely(status1 == 0 && status2 == 0)) {
2001 dev_warn(base->dev, "spurious DMA IRQ from no channel!\n");
2002 return IRQ_HANDLED;
2003 }
2004
2005 /* TODO: consider handle IRQ in tasklet here to
2006 * minimize interrupt latency */
2007
2008 /* Check the first 32 DMA channels for IRQ */
2009 while (status1) {
2010 /* Find first bit set, return as a number. */
2011 i = ffs(status1) - 1;
2012 ch = i;
2013
2014 cohc = &base->chans[ch];
2015 spin_lock(&cohc->lock);
2016
2017 /* Mask off this bit */
2018 status1 &= ~(1 << i);
2019 /* Check the individual channel bits */
2020 if (test_bit(i, virtbase + COH901318_BE_INT_STATUS1)) {
2021 dev_crit(COHC_2_DEV(cohc),
2022 "DMA bus error on channel %d!\n", ch);
2023 BUG_ON(1);
2024 /* Clear BE interrupt */
2025 __set_bit(i, virtbase + COH901318_BE_INT_CLEAR1);
2026 } else {
2027 /* Caused by TC, really? */
2028 if (unlikely(!test_bit(i, virtbase +
2029 COH901318_TC_INT_STATUS1))) {
2030 dev_warn(COHC_2_DEV(cohc),
2031 "ignoring interrupt not caused by terminal count on channel %d\n", ch);
2032 /* Clear TC interrupt */
2033 BUG_ON(1);
2034 __set_bit(i, virtbase + COH901318_TC_INT_CLEAR1);
2035 } else {
2036 /* Enable powersave if transfer has finished */
2037 if (!(readl(virtbase + COH901318_CX_STAT +
2038 COH901318_CX_STAT_SPACING*ch) &
2039 COH901318_CX_STAT_ENABLED)) {
2040 enable_powersave(cohc);
2041 }
2042
2043 /* Must clear TC interrupt before calling
2044 * dma_tc_handle
2045 * in case tc_handle initiate a new dma job
2046 */
2047 __set_bit(i, virtbase + COH901318_TC_INT_CLEAR1);
2048
2049 dma_tc_handle(cohc);
2050 }
2051 }
2052 spin_unlock(&cohc->lock);
2053 }
2054
2055 /* Check the remaining 32 DMA channels for IRQ */
2056 while (status2) {
2057 /* Find first bit set, return as a number. */
2058 i = ffs(status2) - 1;
2059 ch = i + 32;
2060 cohc = &base->chans[ch];
2061 spin_lock(&cohc->lock);
2062
2063 /* Mask off this bit */
2064 status2 &= ~(1 << i);
2065 /* Check the individual channel bits */
2066 if (test_bit(i, virtbase + COH901318_BE_INT_STATUS2)) {
2067 dev_crit(COHC_2_DEV(cohc),
2068 "DMA bus error on channel %d!\n", ch);
2069 /* Clear BE interrupt */
2070 BUG_ON(1);
2071 __set_bit(i, virtbase + COH901318_BE_INT_CLEAR2);
2072 } else {
2073 /* Caused by TC, really? */
2074 if (unlikely(!test_bit(i, virtbase +
2075 COH901318_TC_INT_STATUS2))) {
2076 dev_warn(COHC_2_DEV(cohc),
2077 "ignoring interrupt not caused by terminal count on channel %d\n", ch);
2078 /* Clear TC interrupt */
2079 __set_bit(i, virtbase + COH901318_TC_INT_CLEAR2);
2080 BUG_ON(1);
2081 } else {
2082 /* Enable powersave if transfer has finished */
2083 if (!(readl(virtbase + COH901318_CX_STAT +
2084 COH901318_CX_STAT_SPACING*ch) &
2085 COH901318_CX_STAT_ENABLED)) {
2086 enable_powersave(cohc);
2087 }
2088 /* Must clear TC interrupt before calling
2089 * dma_tc_handle
2090 * in case tc_handle initiate a new dma job
2091 */
2092 __set_bit(i, virtbase + COH901318_TC_INT_CLEAR2);
2093
2094 dma_tc_handle(cohc);
2095 }
2096 }
2097 spin_unlock(&cohc->lock);
2098 }
2099
2100 return IRQ_HANDLED;
2101 }
2102
coh901318_terminate_all(struct dma_chan * chan)2103 static int coh901318_terminate_all(struct dma_chan *chan)
2104 {
2105 unsigned long flags;
2106 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2107 struct coh901318_desc *cohd;
2108 void __iomem *virtbase = cohc->base->virtbase;
2109
2110 /* The remainder of this function terminates the transfer */
2111 coh901318_pause(chan);
2112 spin_lock_irqsave(&cohc->lock, flags);
2113
2114 /* Clear any pending BE or TC interrupt */
2115 if (cohc->id < 32) {
2116 writel(1 << cohc->id, virtbase + COH901318_BE_INT_CLEAR1);
2117 writel(1 << cohc->id, virtbase + COH901318_TC_INT_CLEAR1);
2118 } else {
2119 writel(1 << (cohc->id - 32), virtbase +
2120 COH901318_BE_INT_CLEAR2);
2121 writel(1 << (cohc->id - 32), virtbase +
2122 COH901318_TC_INT_CLEAR2);
2123 }
2124
2125 enable_powersave(cohc);
2126
2127 while ((cohd = coh901318_first_active_get(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 while ((cohd = coh901318_first_queued(cohc))) {
2137 /* release the lli allocation*/
2138 coh901318_lli_free(&cohc->base->pool, &cohd->lli);
2139
2140 /* return desc to free-list */
2141 coh901318_desc_remove(cohd);
2142 coh901318_desc_free(cohc, cohd);
2143 }
2144
2145
2146 cohc->nbr_active_done = 0;
2147 cohc->busy = 0;
2148
2149 spin_unlock_irqrestore(&cohc->lock, flags);
2150
2151 return 0;
2152 }
2153
coh901318_alloc_chan_resources(struct dma_chan * chan)2154 static int coh901318_alloc_chan_resources(struct dma_chan *chan)
2155 {
2156 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2157 unsigned long flags;
2158
2159 dev_vdbg(COHC_2_DEV(cohc), "[%s] DMA channel %d\n",
2160 __func__, cohc->id);
2161
2162 if (chan->client_count > 1)
2163 return -EBUSY;
2164
2165 spin_lock_irqsave(&cohc->lock, flags);
2166
2167 coh901318_config(cohc, NULL);
2168
2169 cohc->allocated = 1;
2170 dma_cookie_init(chan);
2171
2172 spin_unlock_irqrestore(&cohc->lock, flags);
2173
2174 return 1;
2175 }
2176
2177 static void
coh901318_free_chan_resources(struct dma_chan * chan)2178 coh901318_free_chan_resources(struct dma_chan *chan)
2179 {
2180 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2181 int channel = cohc->id;
2182 unsigned long flags;
2183
2184 spin_lock_irqsave(&cohc->lock, flags);
2185
2186 /* Disable HW */
2187 writel(0x00000000U, cohc->base->virtbase + COH901318_CX_CFG +
2188 COH901318_CX_CFG_SPACING*channel);
2189 writel(0x00000000U, cohc->base->virtbase + COH901318_CX_CTRL +
2190 COH901318_CX_CTRL_SPACING*channel);
2191
2192 cohc->allocated = 0;
2193
2194 spin_unlock_irqrestore(&cohc->lock, flags);
2195
2196 coh901318_terminate_all(chan);
2197 }
2198
2199
2200 static dma_cookie_t
coh901318_tx_submit(struct dma_async_tx_descriptor * tx)2201 coh901318_tx_submit(struct dma_async_tx_descriptor *tx)
2202 {
2203 struct coh901318_desc *cohd = container_of(tx, struct coh901318_desc,
2204 desc);
2205 struct coh901318_chan *cohc = to_coh901318_chan(tx->chan);
2206 unsigned long flags;
2207 dma_cookie_t cookie;
2208
2209 spin_lock_irqsave(&cohc->lock, flags);
2210 cookie = dma_cookie_assign(tx);
2211
2212 coh901318_desc_queue(cohc, cohd);
2213
2214 spin_unlock_irqrestore(&cohc->lock, flags);
2215
2216 return cookie;
2217 }
2218
2219 static struct dma_async_tx_descriptor *
coh901318_prep_memcpy(struct dma_chan * chan,dma_addr_t dest,dma_addr_t src,size_t size,unsigned long flags)2220 coh901318_prep_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src,
2221 size_t size, unsigned long flags)
2222 {
2223 struct coh901318_lli *lli;
2224 struct coh901318_desc *cohd;
2225 unsigned long flg;
2226 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2227 int lli_len;
2228 u32 ctrl_last = cohc_chan_param(cohc)->ctrl_lli_last;
2229 int ret;
2230
2231 spin_lock_irqsave(&cohc->lock, flg);
2232
2233 dev_vdbg(COHC_2_DEV(cohc),
2234 "[%s] channel %d src %pad dest %pad size %zu\n",
2235 __func__, cohc->id, &src, &dest, size);
2236
2237 if (flags & DMA_PREP_INTERRUPT)
2238 /* Trigger interrupt after last lli */
2239 ctrl_last |= COH901318_CX_CTRL_TC_IRQ_ENABLE;
2240
2241 lli_len = size >> MAX_DMA_PACKET_SIZE_SHIFT;
2242 if ((lli_len << MAX_DMA_PACKET_SIZE_SHIFT) < size)
2243 lli_len++;
2244
2245 lli = coh901318_lli_alloc(&cohc->base->pool, lli_len);
2246
2247 if (lli == NULL)
2248 goto err;
2249
2250 ret = coh901318_lli_fill_memcpy(
2251 &cohc->base->pool, lli, src, size, dest,
2252 cohc_chan_param(cohc)->ctrl_lli_chained,
2253 ctrl_last);
2254 if (ret)
2255 goto err;
2256
2257 COH_DBG(coh901318_list_print(cohc, lli));
2258
2259 /* Pick a descriptor to handle this transfer */
2260 cohd = coh901318_desc_get(cohc);
2261 cohd->lli = lli;
2262 cohd->flags = flags;
2263 cohd->desc.tx_submit = coh901318_tx_submit;
2264
2265 spin_unlock_irqrestore(&cohc->lock, flg);
2266
2267 return &cohd->desc;
2268 err:
2269 spin_unlock_irqrestore(&cohc->lock, flg);
2270 return NULL;
2271 }
2272
2273 static struct dma_async_tx_descriptor *
coh901318_prep_slave_sg(struct dma_chan * chan,struct scatterlist * sgl,unsigned int sg_len,enum dma_transfer_direction direction,unsigned long flags,void * context)2274 coh901318_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
2275 unsigned int sg_len, enum dma_transfer_direction direction,
2276 unsigned long flags, void *context)
2277 {
2278 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2279 struct coh901318_lli *lli;
2280 struct coh901318_desc *cohd;
2281 const struct coh901318_params *params;
2282 struct scatterlist *sg;
2283 int len = 0;
2284 int size;
2285 int i;
2286 u32 ctrl_chained = cohc_chan_param(cohc)->ctrl_lli_chained;
2287 u32 ctrl = cohc_chan_param(cohc)->ctrl_lli;
2288 u32 ctrl_last = cohc_chan_param(cohc)->ctrl_lli_last;
2289 u32 config;
2290 unsigned long flg;
2291 int ret;
2292
2293 if (!sgl)
2294 goto out;
2295 if (sg_dma_len(sgl) == 0)
2296 goto out;
2297
2298 spin_lock_irqsave(&cohc->lock, flg);
2299
2300 dev_vdbg(COHC_2_DEV(cohc), "[%s] sg_len %d dir %d\n",
2301 __func__, sg_len, direction);
2302
2303 if (flags & DMA_PREP_INTERRUPT)
2304 /* Trigger interrupt after last lli */
2305 ctrl_last |= COH901318_CX_CTRL_TC_IRQ_ENABLE;
2306
2307 params = cohc_chan_param(cohc);
2308 config = params->config;
2309 /*
2310 * Add runtime-specific control on top, make
2311 * sure the bits you set per peripheral channel are
2312 * cleared in the default config from the platform.
2313 */
2314 ctrl_chained |= cohc->ctrl;
2315 ctrl_last |= cohc->ctrl;
2316 ctrl |= cohc->ctrl;
2317
2318 if (direction == DMA_MEM_TO_DEV) {
2319 u32 tx_flags = COH901318_CX_CTRL_PRDD_SOURCE |
2320 COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE;
2321
2322 config |= COH901318_CX_CFG_RM_MEMORY_TO_PRIMARY;
2323 ctrl_chained |= tx_flags;
2324 ctrl_last |= tx_flags;
2325 ctrl |= tx_flags;
2326 } else if (direction == DMA_DEV_TO_MEM) {
2327 u32 rx_flags = COH901318_CX_CTRL_PRDD_DEST |
2328 COH901318_CX_CTRL_DST_ADDR_INC_ENABLE;
2329
2330 config |= COH901318_CX_CFG_RM_PRIMARY_TO_MEMORY;
2331 ctrl_chained |= rx_flags;
2332 ctrl_last |= rx_flags;
2333 ctrl |= rx_flags;
2334 } else
2335 goto err_direction;
2336
2337 /* The dma only supports transmitting packages up to
2338 * MAX_DMA_PACKET_SIZE. Calculate to total number of
2339 * dma elemts required to send the entire sg list
2340 */
2341 for_each_sg(sgl, sg, sg_len, i) {
2342 unsigned int factor;
2343 size = sg_dma_len(sg);
2344
2345 if (size <= MAX_DMA_PACKET_SIZE) {
2346 len++;
2347 continue;
2348 }
2349
2350 factor = size >> MAX_DMA_PACKET_SIZE_SHIFT;
2351 if ((factor << MAX_DMA_PACKET_SIZE_SHIFT) < size)
2352 factor++;
2353
2354 len += factor;
2355 }
2356
2357 pr_debug("Allocate %d lli:s for this transfer\n", len);
2358 lli = coh901318_lli_alloc(&cohc->base->pool, len);
2359
2360 if (lli == NULL)
2361 goto err_dma_alloc;
2362
2363 /* initiate allocated lli list */
2364 ret = coh901318_lli_fill_sg(&cohc->base->pool, lli, sgl, sg_len,
2365 cohc->addr,
2366 ctrl_chained,
2367 ctrl,
2368 ctrl_last,
2369 direction, COH901318_CX_CTRL_TC_IRQ_ENABLE);
2370 if (ret)
2371 goto err_lli_fill;
2372
2373
2374 COH_DBG(coh901318_list_print(cohc, lli));
2375
2376 /* Pick a descriptor to handle this transfer */
2377 cohd = coh901318_desc_get(cohc);
2378 cohd->head_config = config;
2379 /*
2380 * Set the default head ctrl for the channel to the one from the
2381 * lli, things may have changed due to odd buffer alignment
2382 * etc.
2383 */
2384 cohd->head_ctrl = lli->control;
2385 cohd->dir = direction;
2386 cohd->flags = flags;
2387 cohd->desc.tx_submit = coh901318_tx_submit;
2388 cohd->lli = lli;
2389
2390 spin_unlock_irqrestore(&cohc->lock, flg);
2391
2392 return &cohd->desc;
2393 err_lli_fill:
2394 err_dma_alloc:
2395 err_direction:
2396 spin_unlock_irqrestore(&cohc->lock, flg);
2397 out:
2398 return NULL;
2399 }
2400
2401 static enum dma_status
coh901318_tx_status(struct dma_chan * chan,dma_cookie_t cookie,struct dma_tx_state * txstate)2402 coh901318_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
2403 struct dma_tx_state *txstate)
2404 {
2405 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2406 enum dma_status ret;
2407
2408 ret = dma_cookie_status(chan, cookie, txstate);
2409 if (ret == DMA_COMPLETE || !txstate)
2410 return ret;
2411
2412 dma_set_residue(txstate, coh901318_get_bytes_left(chan));
2413
2414 if (ret == DMA_IN_PROGRESS && cohc->stopped)
2415 ret = DMA_PAUSED;
2416
2417 return ret;
2418 }
2419
2420 static void
coh901318_issue_pending(struct dma_chan * chan)2421 coh901318_issue_pending(struct dma_chan *chan)
2422 {
2423 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2424 unsigned long flags;
2425
2426 spin_lock_irqsave(&cohc->lock, flags);
2427
2428 /*
2429 * Busy means that pending jobs are already being processed,
2430 * and then there is no point in starting the queue: the
2431 * terminal count interrupt on the channel will take the next
2432 * job on the queue and execute it anyway.
2433 */
2434 if (!cohc->busy)
2435 coh901318_queue_start(cohc);
2436
2437 spin_unlock_irqrestore(&cohc->lock, flags);
2438 }
2439
2440 /*
2441 * Here we wrap in the runtime dma control interface
2442 */
2443 struct burst_table {
2444 int burst_8bit;
2445 int burst_16bit;
2446 int burst_32bit;
2447 u32 reg;
2448 };
2449
2450 static const struct burst_table burst_sizes[] = {
2451 {
2452 .burst_8bit = 64,
2453 .burst_16bit = 32,
2454 .burst_32bit = 16,
2455 .reg = COH901318_CX_CTRL_BURST_COUNT_64_BYTES,
2456 },
2457 {
2458 .burst_8bit = 48,
2459 .burst_16bit = 24,
2460 .burst_32bit = 12,
2461 .reg = COH901318_CX_CTRL_BURST_COUNT_48_BYTES,
2462 },
2463 {
2464 .burst_8bit = 32,
2465 .burst_16bit = 16,
2466 .burst_32bit = 8,
2467 .reg = COH901318_CX_CTRL_BURST_COUNT_32_BYTES,
2468 },
2469 {
2470 .burst_8bit = 16,
2471 .burst_16bit = 8,
2472 .burst_32bit = 4,
2473 .reg = COH901318_CX_CTRL_BURST_COUNT_16_BYTES,
2474 },
2475 {
2476 .burst_8bit = 8,
2477 .burst_16bit = 4,
2478 .burst_32bit = 2,
2479 .reg = COH901318_CX_CTRL_BURST_COUNT_8_BYTES,
2480 },
2481 {
2482 .burst_8bit = 4,
2483 .burst_16bit = 2,
2484 .burst_32bit = 1,
2485 .reg = COH901318_CX_CTRL_BURST_COUNT_4_BYTES,
2486 },
2487 {
2488 .burst_8bit = 2,
2489 .burst_16bit = 1,
2490 .burst_32bit = 0,
2491 .reg = COH901318_CX_CTRL_BURST_COUNT_2_BYTES,
2492 },
2493 {
2494 .burst_8bit = 1,
2495 .burst_16bit = 0,
2496 .burst_32bit = 0,
2497 .reg = COH901318_CX_CTRL_BURST_COUNT_1_BYTE,
2498 },
2499 };
2500
coh901318_dma_set_runtimeconfig(struct dma_chan * chan,struct dma_slave_config * config)2501 static int coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
2502 struct dma_slave_config *config)
2503 {
2504 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2505 dma_addr_t addr;
2506 enum dma_slave_buswidth addr_width;
2507 u32 maxburst;
2508 u32 ctrl = 0;
2509 int i = 0;
2510
2511 /* We only support mem to per or per to mem transfers */
2512 if (config->direction == DMA_DEV_TO_MEM) {
2513 addr = config->src_addr;
2514 addr_width = config->src_addr_width;
2515 maxburst = config->src_maxburst;
2516 } else if (config->direction == DMA_MEM_TO_DEV) {
2517 addr = config->dst_addr;
2518 addr_width = config->dst_addr_width;
2519 maxburst = config->dst_maxburst;
2520 } else {
2521 dev_err(COHC_2_DEV(cohc), "illegal channel mode\n");
2522 return -EINVAL;
2523 }
2524
2525 dev_dbg(COHC_2_DEV(cohc), "configure channel for %d byte transfers\n",
2526 addr_width);
2527 switch (addr_width) {
2528 case DMA_SLAVE_BUSWIDTH_1_BYTE:
2529 ctrl |=
2530 COH901318_CX_CTRL_SRC_BUS_SIZE_8_BITS |
2531 COH901318_CX_CTRL_DST_BUS_SIZE_8_BITS;
2532
2533 while (i < ARRAY_SIZE(burst_sizes)) {
2534 if (burst_sizes[i].burst_8bit <= maxburst)
2535 break;
2536 i++;
2537 }
2538
2539 break;
2540 case DMA_SLAVE_BUSWIDTH_2_BYTES:
2541 ctrl |=
2542 COH901318_CX_CTRL_SRC_BUS_SIZE_16_BITS |
2543 COH901318_CX_CTRL_DST_BUS_SIZE_16_BITS;
2544
2545 while (i < ARRAY_SIZE(burst_sizes)) {
2546 if (burst_sizes[i].burst_16bit <= maxburst)
2547 break;
2548 i++;
2549 }
2550
2551 break;
2552 case DMA_SLAVE_BUSWIDTH_4_BYTES:
2553 /* Direction doesn't matter here, it's 32/32 bits */
2554 ctrl |=
2555 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
2556 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS;
2557
2558 while (i < ARRAY_SIZE(burst_sizes)) {
2559 if (burst_sizes[i].burst_32bit <= maxburst)
2560 break;
2561 i++;
2562 }
2563
2564 break;
2565 default:
2566 dev_err(COHC_2_DEV(cohc),
2567 "bad runtimeconfig: alien address width\n");
2568 return -EINVAL;
2569 }
2570
2571 ctrl |= burst_sizes[i].reg;
2572 dev_dbg(COHC_2_DEV(cohc),
2573 "selected burst size %d bytes for address width %d bytes, maxburst %d\n",
2574 burst_sizes[i].burst_8bit, addr_width, maxburst);
2575
2576 cohc->addr = addr;
2577 cohc->ctrl = ctrl;
2578
2579 return 0;
2580 }
2581
coh901318_base_init(struct dma_device * dma,const int * pick_chans,struct coh901318_base * base)2582 static void coh901318_base_init(struct dma_device *dma, const int *pick_chans,
2583 struct coh901318_base *base)
2584 {
2585 int chans_i;
2586 int i = 0;
2587 struct coh901318_chan *cohc;
2588
2589 INIT_LIST_HEAD(&dma->channels);
2590
2591 for (chans_i = 0; pick_chans[chans_i] != -1; chans_i += 2) {
2592 for (i = pick_chans[chans_i]; i <= pick_chans[chans_i+1]; i++) {
2593 cohc = &base->chans[i];
2594
2595 cohc->base = base;
2596 cohc->chan.device = dma;
2597 cohc->id = i;
2598
2599 /* TODO: do we really need this lock if only one
2600 * client is connected to each channel?
2601 */
2602
2603 spin_lock_init(&cohc->lock);
2604
2605 cohc->nbr_active_done = 0;
2606 cohc->busy = 0;
2607 INIT_LIST_HEAD(&cohc->free);
2608 INIT_LIST_HEAD(&cohc->active);
2609 INIT_LIST_HEAD(&cohc->queue);
2610
2611 tasklet_init(&cohc->tasklet, dma_tasklet,
2612 (unsigned long) cohc);
2613
2614 list_add_tail(&cohc->chan.device_node,
2615 &dma->channels);
2616 }
2617 }
2618 }
2619
coh901318_probe(struct platform_device * pdev)2620 static int __init coh901318_probe(struct platform_device *pdev)
2621 {
2622 int err = 0;
2623 struct coh901318_base *base;
2624 int irq;
2625 struct resource *io;
2626
2627 io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2628 if (!io)
2629 return -ENODEV;
2630
2631 /* Map DMA controller registers to virtual memory */
2632 if (devm_request_mem_region(&pdev->dev,
2633 io->start,
2634 resource_size(io),
2635 pdev->dev.driver->name) == NULL)
2636 return -ENOMEM;
2637
2638 base = devm_kzalloc(&pdev->dev,
2639 ALIGN(sizeof(struct coh901318_base), 4) +
2640 U300_DMA_CHANNELS *
2641 sizeof(struct coh901318_chan),
2642 GFP_KERNEL);
2643 if (!base)
2644 return -ENOMEM;
2645
2646 base->chans = ((void *)base) + ALIGN(sizeof(struct coh901318_base), 4);
2647
2648 base->virtbase = devm_ioremap(&pdev->dev, io->start, resource_size(io));
2649 if (!base->virtbase)
2650 return -ENOMEM;
2651
2652 base->dev = &pdev->dev;
2653 spin_lock_init(&base->pm.lock);
2654 base->pm.started_channels = 0;
2655
2656 COH901318_DEBUGFS_ASSIGN(debugfs_dma_base, base);
2657
2658 irq = platform_get_irq(pdev, 0);
2659 if (irq < 0)
2660 return irq;
2661
2662 err = devm_request_irq(&pdev->dev, irq, dma_irq_handler, 0,
2663 "coh901318", base);
2664 if (err)
2665 return err;
2666
2667 base->irq = irq;
2668
2669 err = coh901318_pool_create(&base->pool, &pdev->dev,
2670 sizeof(struct coh901318_lli),
2671 32);
2672 if (err)
2673 return err;
2674
2675 /* init channels for device transfers */
2676 coh901318_base_init(&base->dma_slave, dma_slave_channels,
2677 base);
2678
2679 dma_cap_zero(base->dma_slave.cap_mask);
2680 dma_cap_set(DMA_SLAVE, base->dma_slave.cap_mask);
2681
2682 base->dma_slave.device_alloc_chan_resources = coh901318_alloc_chan_resources;
2683 base->dma_slave.device_free_chan_resources = coh901318_free_chan_resources;
2684 base->dma_slave.device_prep_slave_sg = coh901318_prep_slave_sg;
2685 base->dma_slave.device_tx_status = coh901318_tx_status;
2686 base->dma_slave.device_issue_pending = coh901318_issue_pending;
2687 base->dma_slave.device_config = coh901318_dma_set_runtimeconfig;
2688 base->dma_slave.device_pause = coh901318_pause;
2689 base->dma_slave.device_resume = coh901318_resume;
2690 base->dma_slave.device_terminate_all = coh901318_terminate_all;
2691 base->dma_slave.dev = &pdev->dev;
2692
2693 err = dma_async_device_register(&base->dma_slave);
2694
2695 if (err)
2696 goto err_register_slave;
2697
2698 /* init channels for memcpy */
2699 coh901318_base_init(&base->dma_memcpy, dma_memcpy_channels,
2700 base);
2701
2702 dma_cap_zero(base->dma_memcpy.cap_mask);
2703 dma_cap_set(DMA_MEMCPY, base->dma_memcpy.cap_mask);
2704
2705 base->dma_memcpy.device_alloc_chan_resources = coh901318_alloc_chan_resources;
2706 base->dma_memcpy.device_free_chan_resources = coh901318_free_chan_resources;
2707 base->dma_memcpy.device_prep_dma_memcpy = coh901318_prep_memcpy;
2708 base->dma_memcpy.device_tx_status = coh901318_tx_status;
2709 base->dma_memcpy.device_issue_pending = coh901318_issue_pending;
2710 base->dma_memcpy.device_config = coh901318_dma_set_runtimeconfig;
2711 base->dma_memcpy.device_pause = coh901318_pause;
2712 base->dma_memcpy.device_resume = coh901318_resume;
2713 base->dma_memcpy.device_terminate_all = coh901318_terminate_all;
2714 base->dma_memcpy.dev = &pdev->dev;
2715 /*
2716 * This controller can only access address at even 32bit boundaries,
2717 * i.e. 2^2
2718 */
2719 base->dma_memcpy.copy_align = DMAENGINE_ALIGN_4_BYTES;
2720 err = dma_async_device_register(&base->dma_memcpy);
2721
2722 if (err)
2723 goto err_register_memcpy;
2724
2725 err = of_dma_controller_register(pdev->dev.of_node, coh901318_xlate,
2726 base);
2727 if (err)
2728 goto err_register_of_dma;
2729
2730 platform_set_drvdata(pdev, base);
2731 dev_info(&pdev->dev, "Initialized COH901318 DMA on virtual base 0x%p\n",
2732 base->virtbase);
2733
2734 return err;
2735
2736 err_register_of_dma:
2737 dma_async_device_unregister(&base->dma_memcpy);
2738 err_register_memcpy:
2739 dma_async_device_unregister(&base->dma_slave);
2740 err_register_slave:
2741 coh901318_pool_destroy(&base->pool);
2742 return err;
2743 }
coh901318_base_remove(struct coh901318_base * base,const int * pick_chans)2744 static void coh901318_base_remove(struct coh901318_base *base, const int *pick_chans)
2745 {
2746 int chans_i;
2747 int i = 0;
2748 struct coh901318_chan *cohc;
2749
2750 for (chans_i = 0; pick_chans[chans_i] != -1; chans_i += 2) {
2751 for (i = pick_chans[chans_i]; i <= pick_chans[chans_i+1]; i++) {
2752 cohc = &base->chans[i];
2753
2754 tasklet_kill(&cohc->tasklet);
2755 }
2756 }
2757
2758 }
2759
coh901318_remove(struct platform_device * pdev)2760 static int coh901318_remove(struct platform_device *pdev)
2761 {
2762 struct coh901318_base *base = platform_get_drvdata(pdev);
2763
2764 devm_free_irq(&pdev->dev, base->irq, base);
2765
2766 coh901318_base_remove(base, dma_slave_channels);
2767 coh901318_base_remove(base, dma_memcpy_channels);
2768
2769 of_dma_controller_free(pdev->dev.of_node);
2770 dma_async_device_unregister(&base->dma_memcpy);
2771 dma_async_device_unregister(&base->dma_slave);
2772 coh901318_pool_destroy(&base->pool);
2773 return 0;
2774 }
2775
2776 static const struct of_device_id coh901318_dt_match[] = {
2777 { .compatible = "stericsson,coh901318" },
2778 {},
2779 };
2780
2781 static struct platform_driver coh901318_driver = {
2782 .remove = coh901318_remove,
2783 .driver = {
2784 .name = "coh901318",
2785 .of_match_table = coh901318_dt_match,
2786 },
2787 };
2788
coh901318_init(void)2789 static int __init coh901318_init(void)
2790 {
2791 return platform_driver_probe(&coh901318_driver, coh901318_probe);
2792 }
2793 subsys_initcall(coh901318_init);
2794
coh901318_exit(void)2795 static void __exit coh901318_exit(void)
2796 {
2797 platform_driver_unregister(&coh901318_driver);
2798 }
2799 module_exit(coh901318_exit);
2800
2801 MODULE_LICENSE("GPL");
2802 MODULE_AUTHOR("Per Friden");
2803
