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 */
179struct 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 */
194struct 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 */
207struct 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 */
216static 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. */
221static 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
269static 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
1268struct 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
1280struct 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
1291struct 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 struct dma_slave_config config;
1310 u32 addr;
1311 u32 ctrl;
1312
1313 struct coh901318_base *base;
1314};
1315
1316static void coh901318_list_print(struct coh901318_chan *cohc,
1317 struct coh901318_lli *lli)
1318{
1319 struct coh901318_lli *l = lli;
1320 int i = 0;
1321
1322 while (l) {
1323 dev_vdbg(COHC_2_DEV(cohc), "i %d, lli %p, ctrl 0x%x, src %pad"
1324 ", dst %pad, link %pad virt_link_addr 0x%p\n",
1325 i, l, l->control, &l->src_addr, &l->dst_addr,
1326 &l->link_addr, l->virt_link_addr);
1327 i++;
1328 l = l->virt_link_addr;
1329 }
1330}
1331
1332#ifdef CONFIG_DEBUG_FS
1333
1334#define COH901318_DEBUGFS_ASSIGN(x, y) (x = y)
1335
1336static struct coh901318_base *debugfs_dma_base;
1337static struct dentry *dma_dentry;
1338
1339static ssize_t coh901318_debugfs_read(struct file *file, char __user *buf,
1340 size_t count, loff_t *f_pos)
1341{
1342 u64 started_channels = debugfs_dma_base->pm.started_channels;
1343 int pool_count = debugfs_dma_base->pool.debugfs_pool_counter;
1344 char *dev_buf;
1345 char *tmp;
1346 int ret;
1347 int i;
1348
1349 dev_buf = kmalloc(4*1024, GFP_KERNEL);
1350 if (dev_buf == NULL)
1351 return -ENOMEM;
1352 tmp = dev_buf;
1353
1354 tmp += sprintf(tmp, "DMA -- enabled dma channels\n");
1355
1356 for (i = 0; i < U300_DMA_CHANNELS; i++) {
1357 if (started_channels & (1ULL << i))
1358 tmp += sprintf(tmp, "channel %d\n", i);
1359 }
1360
1361 tmp += sprintf(tmp, "Pool alloc nbr %d\n", pool_count);
1362
1363 ret = simple_read_from_buffer(buf, count, f_pos, dev_buf,
1364 tmp - dev_buf);
1365 kfree(dev_buf);
1366 return ret;
1367}
1368
1369static const struct file_operations coh901318_debugfs_status_operations = {
1370 .open = simple_open,
1371 .read = coh901318_debugfs_read,
1372 .llseek = default_llseek,
1373};
1374
1375
1376static int __init init_coh901318_debugfs(void)
1377{
1378
1379 dma_dentry = debugfs_create_dir("dma", NULL);
1380
1381 (void) debugfs_create_file("status",
1382 S_IFREG | S_IRUGO,
1383 dma_dentry, NULL,
1384 &coh901318_debugfs_status_operations);
1385 return 0;
1386}
1387
1388static void __exit exit_coh901318_debugfs(void)
1389{
1390 debugfs_remove_recursive(dma_dentry);
1391}
1392
1393module_init(init_coh901318_debugfs);
1394module_exit(exit_coh901318_debugfs);
1395#else
1396
1397#define COH901318_DEBUGFS_ASSIGN(x, y)
1398
1399#endif /* CONFIG_DEBUG_FS */
1400
1401static inline struct coh901318_chan *to_coh901318_chan(struct dma_chan *chan)
1402{
1403 return container_of(chan, struct coh901318_chan, chan);
1404}
1405
1406static int coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
1407 struct dma_slave_config *config,
1408 enum dma_transfer_direction direction);
1409
1410static inline const struct coh901318_params *
1411cohc_chan_param(struct coh901318_chan *cohc)
1412{
1413 return &chan_config[cohc->id].param;
1414}
1415
1416static inline const struct coh_dma_channel *
1417cohc_chan_conf(struct coh901318_chan *cohc)
1418{
1419 return &chan_config[cohc->id];
1420}
1421
1422static void enable_powersave(struct coh901318_chan *cohc)
1423{
1424 unsigned long flags;
1425 struct powersave *pm = &cohc->base->pm;
1426
1427 spin_lock_irqsave(&pm->lock, flags);
1428
1429 pm->started_channels &= ~(1ULL << cohc->id);
1430
1431 spin_unlock_irqrestore(&pm->lock, flags);
1432}
1433static void disable_powersave(struct coh901318_chan *cohc)
1434{
1435 unsigned long flags;
1436 struct powersave *pm = &cohc->base->pm;
1437
1438 spin_lock_irqsave(&pm->lock, flags);
1439
1440 pm->started_channels |= (1ULL << cohc->id);
1441
1442 spin_unlock_irqrestore(&pm->lock, flags);
1443}
1444
1445static inline int coh901318_set_ctrl(struct coh901318_chan *cohc, u32 control)
1446{
1447 int channel = cohc->id;
1448 void __iomem *virtbase = cohc->base->virtbase;
1449
1450 writel(control,
1451 virtbase + COH901318_CX_CTRL +
1452 COH901318_CX_CTRL_SPACING * channel);
1453 return 0;
1454}
1455
1456static inline int coh901318_set_conf(struct coh901318_chan *cohc, u32 conf)
1457{
1458 int channel = cohc->id;
1459 void __iomem *virtbase = cohc->base->virtbase;
1460
1461 writel(conf,
1462 virtbase + COH901318_CX_CFG +
1463 COH901318_CX_CFG_SPACING*channel);
1464 return 0;
1465}
1466
1467
1468static int coh901318_start(struct coh901318_chan *cohc)
1469{
1470 u32 val;
1471 int channel = cohc->id;
1472 void __iomem *virtbase = cohc->base->virtbase;
1473
1474 disable_powersave(cohc);
1475
1476 val = readl(virtbase + COH901318_CX_CFG +
1477 COH901318_CX_CFG_SPACING * channel);
1478
1479 /* Enable channel */
1480 val |= COH901318_CX_CFG_CH_ENABLE;
1481 writel(val, virtbase + COH901318_CX_CFG +
1482 COH901318_CX_CFG_SPACING * channel);
1483
1484 return 0;
1485}
1486
1487static int coh901318_prep_linked_list(struct coh901318_chan *cohc,
1488 struct coh901318_lli *lli)
1489{
1490 int channel = cohc->id;
1491 void __iomem *virtbase = cohc->base->virtbase;
1492
1493 BUG_ON(readl(virtbase + COH901318_CX_STAT +
1494 COH901318_CX_STAT_SPACING*channel) &
1495 COH901318_CX_STAT_ACTIVE);
1496
1497 writel(lli->src_addr,
1498 virtbase + COH901318_CX_SRC_ADDR +
1499 COH901318_CX_SRC_ADDR_SPACING * channel);
1500
1501 writel(lli->dst_addr, virtbase +
1502 COH901318_CX_DST_ADDR +
1503 COH901318_CX_DST_ADDR_SPACING * channel);
1504
1505 writel(lli->link_addr, virtbase + COH901318_CX_LNK_ADDR +
1506 COH901318_CX_LNK_ADDR_SPACING * channel);
1507
1508 writel(lli->control, virtbase + COH901318_CX_CTRL +
1509 COH901318_CX_CTRL_SPACING * channel);
1510
1511 return 0;
1512}
1513
1514static struct coh901318_desc *
1515coh901318_desc_get(struct coh901318_chan *cohc)
1516{
1517 struct coh901318_desc *desc;
1518
1519 if (list_empty(&cohc->free)) {
1520 /* alloc new desc because we're out of used ones
1521 * TODO: alloc a pile of descs instead of just one,
1522 * avoid many small allocations.
1523 */
1524 desc = kzalloc(sizeof(struct coh901318_desc), GFP_NOWAIT);
1525 if (desc == NULL)
1526 goto out;
1527 INIT_LIST_HEAD(&desc->node);
1528 dma_async_tx_descriptor_init(&desc->desc, &cohc->chan);
1529 } else {
1530 /* Reuse an old desc. */
1531 desc = list_first_entry(&cohc->free,
1532 struct coh901318_desc,
1533 node);
1534 list_del(&desc->node);
1535 /* Initialize it a bit so it's not insane */
1536 desc->sg = NULL;
1537 desc->sg_len = 0;
1538 desc->desc.callback = NULL;
1539 desc->desc.callback_param = NULL;
1540 }
1541
1542 out:
1543 return desc;
1544}
1545
1546static void
1547coh901318_desc_free(struct coh901318_chan *cohc, struct coh901318_desc *cohd)
1548{
1549 list_add_tail(&cohd->node, &cohc->free);
1550}
1551
1552/* call with irq lock held */
1553static void
1554coh901318_desc_submit(struct coh901318_chan *cohc, struct coh901318_desc *desc)
1555{
1556 list_add_tail(&desc->node, &cohc->active);
1557}
1558
1559static struct coh901318_desc *
1560coh901318_first_active_get(struct coh901318_chan *cohc)
1561{
1562 return list_first_entry_or_null(&cohc->active, struct coh901318_desc,
1563 node);
1564}
1565
1566static void
1567coh901318_desc_remove(struct coh901318_desc *cohd)
1568{
1569 list_del(&cohd->node);
1570}
1571
1572static void
1573coh901318_desc_queue(struct coh901318_chan *cohc, struct coh901318_desc *desc)
1574{
1575 list_add_tail(&desc->node, &cohc->queue);
1576}
1577
1578static struct coh901318_desc *
1579coh901318_first_queued(struct coh901318_chan *cohc)
1580{
1581 return list_first_entry_or_null(&cohc->queue, struct coh901318_desc,
1582 node);
1583}
1584
1585static inline u32 coh901318_get_bytes_in_lli(struct coh901318_lli *in_lli)
1586{
1587 struct coh901318_lli *lli = in_lli;
1588 u32 bytes = 0;
1589
1590 while (lli) {
1591 bytes += lli->control & COH901318_CX_CTRL_TC_VALUE_MASK;
1592 lli = lli->virt_link_addr;
1593 }
1594 return bytes;
1595}
1596
1597/*
1598 * Get the number of bytes left to transfer on this channel,
1599 * it is unwise to call this before stopping the channel for
1600 * absolute measures, but for a rough guess you can still call
1601 * it.
1602 */
1603static u32 coh901318_get_bytes_left(struct dma_chan *chan)
1604{
1605 struct coh901318_chan *cohc = to_coh901318_chan(chan);
1606 struct coh901318_desc *cohd;
1607 struct list_head *pos;
1608 unsigned long flags;
1609 u32 left = 0;
1610 int i = 0;
1611
1612 spin_lock_irqsave(&cohc->lock, flags);
1613
1614 /*
1615 * If there are many queued jobs, we iterate and add the
1616 * size of them all. We take a special look on the first
1617 * job though, since it is probably active.
1618 */
1619 list_for_each(pos, &cohc->active) {
1620 /*
1621 * The first job in the list will be working on the
1622 * hardware. The job can be stopped but still active,
1623 * so that the transfer counter is somewhere inside
1624 * the buffer.
1625 */
1626 cohd = list_entry(pos, struct coh901318_desc, node);
1627
1628 if (i == 0) {
1629 struct coh901318_lli *lli;
1630 dma_addr_t ladd;
1631
1632 /* Read current transfer count value */
1633 left = readl(cohc->base->virtbase +
1634 COH901318_CX_CTRL +
1635 COH901318_CX_CTRL_SPACING * cohc->id) &
1636 COH901318_CX_CTRL_TC_VALUE_MASK;
1637
1638 /* See if the transfer is linked... */
1639 ladd = readl(cohc->base->virtbase +
1640 COH901318_CX_LNK_ADDR +
1641 COH901318_CX_LNK_ADDR_SPACING *
1642 cohc->id) &
1643 ~COH901318_CX_LNK_LINK_IMMEDIATE;
1644 /* Single transaction */
1645 if (!ladd)
1646 continue;
1647
1648 /*
1649 * Linked transaction, follow the lli, find the
1650 * currently processing lli, and proceed to the next
1651 */
1652 lli = cohd->lli;
1653 while (lli && lli->link_addr != ladd)
1654 lli = lli->virt_link_addr;
1655
1656 if (lli)
1657 lli = lli->virt_link_addr;
1658
1659 /*
1660 * Follow remaining lli links around to count the total
1661 * number of bytes left
1662 */
1663 left += coh901318_get_bytes_in_lli(lli);
1664 } else {
1665 left += coh901318_get_bytes_in_lli(cohd->lli);
1666 }
1667 i++;
1668 }
1669
1670 /* Also count bytes in the queued jobs */
1671 list_for_each(pos, &cohc->queue) {
1672 cohd = list_entry(pos, struct coh901318_desc, node);
1673 left += coh901318_get_bytes_in_lli(cohd->lli);
1674 }
1675
1676 spin_unlock_irqrestore(&cohc->lock, flags);
1677
1678 return left;
1679}
1680
1681/*
1682 * Pauses a transfer without losing data. Enables power save.
1683 * Use this function in conjunction with coh901318_resume.
1684 */
1685static int coh901318_pause(struct dma_chan *chan)
1686{
1687 u32 val;
1688 unsigned long flags;
1689 struct coh901318_chan *cohc = to_coh901318_chan(chan);
1690 int channel = cohc->id;
1691 void __iomem *virtbase = cohc->base->virtbase;
1692
1693 spin_lock_irqsave(&cohc->lock, flags);
1694
1695 /* Disable channel in HW */
1696 val = readl(virtbase + COH901318_CX_CFG +
1697 COH901318_CX_CFG_SPACING * channel);
1698
1699 /* Stopping infinite transfer */
1700 if ((val & COH901318_CX_CTRL_TC_ENABLE) == 0 &&
1701 (val & COH901318_CX_CFG_CH_ENABLE))
1702 cohc->stopped = 1;
1703
1704
1705 val &= ~COH901318_CX_CFG_CH_ENABLE;
1706 /* Enable twice, HW bug work around */
1707 writel(val, virtbase + COH901318_CX_CFG +
1708 COH901318_CX_CFG_SPACING * channel);
1709 writel(val, virtbase + COH901318_CX_CFG +
1710 COH901318_CX_CFG_SPACING * channel);
1711
1712 /* Spin-wait for it to actually go inactive */
1713 while (readl(virtbase + COH901318_CX_STAT+COH901318_CX_STAT_SPACING *
1714 channel) & COH901318_CX_STAT_ACTIVE)
1715 cpu_relax();
1716
1717 /* Check if we stopped an active job */
1718 if ((readl(virtbase + COH901318_CX_CTRL+COH901318_CX_CTRL_SPACING *
1719 channel) & COH901318_CX_CTRL_TC_VALUE_MASK) > 0)
1720 cohc->stopped = 1;
1721
1722 enable_powersave(cohc);
1723
1724 spin_unlock_irqrestore(&cohc->lock, flags);
1725 return 0;
1726}
1727
1728/* Resumes a transfer that has been stopped via 300_dma_stop(..).
1729 Power save is handled.
1730*/
1731static int coh901318_resume(struct dma_chan *chan)
1732{
1733 u32 val;
1734 unsigned long flags;
1735 struct coh901318_chan *cohc = to_coh901318_chan(chan);
1736 int channel = cohc->id;
1737
1738 spin_lock_irqsave(&cohc->lock, flags);
1739
1740 disable_powersave(cohc);
1741
1742 if (cohc->stopped) {
1743 /* Enable channel in HW */
1744 val = readl(cohc->base->virtbase + COH901318_CX_CFG +
1745 COH901318_CX_CFG_SPACING * channel);
1746
1747 val |= COH901318_CX_CFG_CH_ENABLE;
1748
1749 writel(val, cohc->base->virtbase + COH901318_CX_CFG +
1750 COH901318_CX_CFG_SPACING*channel);
1751
1752 cohc->stopped = 0;
1753 }
1754
1755 spin_unlock_irqrestore(&cohc->lock, flags);
1756 return 0;
1757}
1758
1759bool coh901318_filter_id(struct dma_chan *chan, void *chan_id)
1760{
1761 unsigned long ch_nr = (unsigned long) chan_id;
1762
1763 if (ch_nr == to_coh901318_chan(chan)->id)
1764 return true;
1765
1766 return false;
1767}
1768EXPORT_SYMBOL(coh901318_filter_id);
1769
1770struct coh901318_filter_args {
1771 struct coh901318_base *base;
1772 unsigned int ch_nr;
1773};
1774
1775static bool coh901318_filter_base_and_id(struct dma_chan *chan, void *data)
1776{
1777 struct coh901318_filter_args *args = data;
1778
1779 if (&args->base->dma_slave == chan->device &&
1780 args->ch_nr == to_coh901318_chan(chan)->id)
1781 return true;
1782
1783 return false;
1784}
1785
1786static struct dma_chan *coh901318_xlate(struct of_phandle_args *dma_spec,
1787 struct of_dma *ofdma)
1788{
1789 struct coh901318_filter_args args = {
1790 .base = ofdma->of_dma_data,
1791 .ch_nr = dma_spec->args[0],
1792 };
1793 dma_cap_mask_t cap;
1794 dma_cap_zero(cap);
1795 dma_cap_set(DMA_SLAVE, cap);
1796
1797 return dma_request_channel(cap, coh901318_filter_base_and_id, &args);
1798}
1799/*
1800 * DMA channel allocation
1801 */
1802static int coh901318_config(struct coh901318_chan *cohc,
1803 struct coh901318_params *param)
1804{
1805 const struct coh901318_params *p;
1806 int channel = cohc->id;
1807 void __iomem *virtbase = cohc->base->virtbase;
1808
1809 if (param)
1810 p = param;
1811 else
1812 p = cohc_chan_param(cohc);
1813
1814 /* Clear any pending BE or TC interrupt */
1815 if (channel < 32) {
1816 writel(1 << channel, virtbase + COH901318_BE_INT_CLEAR1);
1817 writel(1 << channel, virtbase + COH901318_TC_INT_CLEAR1);
1818 } else {
1819 writel(1 << (channel - 32), virtbase +
1820 COH901318_BE_INT_CLEAR2);
1821 writel(1 << (channel - 32), virtbase +
1822 COH901318_TC_INT_CLEAR2);
1823 }
1824
1825 coh901318_set_conf(cohc, p->config);
1826 coh901318_set_ctrl(cohc, p->ctrl_lli_last);
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 */
1838static 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 */
1873static 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 */
1940static 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
1987static 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
2103static 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
2154static 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
2177static void
2178coh901318_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
2200static dma_cookie_t
2201coh901318_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
2219static struct dma_async_tx_descriptor *
2220coh901318_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
2273static struct dma_async_tx_descriptor *
2274coh901318_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 coh901318_dma_set_runtimeconfig(chan, &cohc->config, direction);
2364
2365 /* initiate allocated lli list */
2366 ret = coh901318_lli_fill_sg(&cohc->base->pool, lli, sgl, sg_len,
2367 cohc->addr,
2368 ctrl_chained,
2369 ctrl,
2370 ctrl_last,
2371 direction, COH901318_CX_CTRL_TC_IRQ_ENABLE);
2372 if (ret)
2373 goto err_lli_fill;
2374
2375
2376 COH_DBG(coh901318_list_print(cohc, lli));
2377
2378 /* Pick a descriptor to handle this transfer */
2379 cohd = coh901318_desc_get(cohc);
2380 cohd->head_config = config;
2381 /*
2382 * Set the default head ctrl for the channel to the one from the
2383 * lli, things may have changed due to odd buffer alignment
2384 * etc.
2385 */
2386 cohd->head_ctrl = lli->control;
2387 cohd->dir = direction;
2388 cohd->flags = flags;
2389 cohd->desc.tx_submit = coh901318_tx_submit;
2390 cohd->lli = lli;
2391
2392 spin_unlock_irqrestore(&cohc->lock, flg);
2393
2394 return &cohd->desc;
2395 err_lli_fill:
2396 err_dma_alloc:
2397 err_direction:
2398 spin_unlock_irqrestore(&cohc->lock, flg);
2399 out:
2400 return NULL;
2401}
2402
2403static enum dma_status
2404coh901318_tx_status(struct dma_chan *chan, dma_cookie_t cookie,
2405 struct dma_tx_state *txstate)
2406{
2407 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2408 enum dma_status ret;
2409
2410 ret = dma_cookie_status(chan, cookie, txstate);
2411 if (ret == DMA_COMPLETE || !txstate)
2412 return ret;
2413
2414 dma_set_residue(txstate, coh901318_get_bytes_left(chan));
2415
2416 if (ret == DMA_IN_PROGRESS && cohc->stopped)
2417 ret = DMA_PAUSED;
2418
2419 return ret;
2420}
2421
2422static void
2423coh901318_issue_pending(struct dma_chan *chan)
2424{
2425 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2426 unsigned long flags;
2427
2428 spin_lock_irqsave(&cohc->lock, flags);
2429
2430 /*
2431 * Busy means that pending jobs are already being processed,
2432 * and then there is no point in starting the queue: the
2433 * terminal count interrupt on the channel will take the next
2434 * job on the queue and execute it anyway.
2435 */
2436 if (!cohc->busy)
2437 coh901318_queue_start(cohc);
2438
2439 spin_unlock_irqrestore(&cohc->lock, flags);
2440}
2441
2442/*
2443 * Here we wrap in the runtime dma control interface
2444 */
2445struct burst_table {
2446 int burst_8bit;
2447 int burst_16bit;
2448 int burst_32bit;
2449 u32 reg;
2450};
2451
2452static const struct burst_table burst_sizes[] = {
2453 {
2454 .burst_8bit = 64,
2455 .burst_16bit = 32,
2456 .burst_32bit = 16,
2457 .reg = COH901318_CX_CTRL_BURST_COUNT_64_BYTES,
2458 },
2459 {
2460 .burst_8bit = 48,
2461 .burst_16bit = 24,
2462 .burst_32bit = 12,
2463 .reg = COH901318_CX_CTRL_BURST_COUNT_48_BYTES,
2464 },
2465 {
2466 .burst_8bit = 32,
2467 .burst_16bit = 16,
2468 .burst_32bit = 8,
2469 .reg = COH901318_CX_CTRL_BURST_COUNT_32_BYTES,
2470 },
2471 {
2472 .burst_8bit = 16,
2473 .burst_16bit = 8,
2474 .burst_32bit = 4,
2475 .reg = COH901318_CX_CTRL_BURST_COUNT_16_BYTES,
2476 },
2477 {
2478 .burst_8bit = 8,
2479 .burst_16bit = 4,
2480 .burst_32bit = 2,
2481 .reg = COH901318_CX_CTRL_BURST_COUNT_8_BYTES,
2482 },
2483 {
2484 .burst_8bit = 4,
2485 .burst_16bit = 2,
2486 .burst_32bit = 1,
2487 .reg = COH901318_CX_CTRL_BURST_COUNT_4_BYTES,
2488 },
2489 {
2490 .burst_8bit = 2,
2491 .burst_16bit = 1,
2492 .burst_32bit = 0,
2493 .reg = COH901318_CX_CTRL_BURST_COUNT_2_BYTES,
2494 },
2495 {
2496 .burst_8bit = 1,
2497 .burst_16bit = 0,
2498 .burst_32bit = 0,
2499 .reg = COH901318_CX_CTRL_BURST_COUNT_1_BYTE,
2500 },
2501};
2502
2503static int coh901318_dma_set_runtimeconfig(struct dma_chan *chan,
2504 struct dma_slave_config *config,
2505 enum dma_transfer_direction direction)
2506{
2507 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2508 dma_addr_t addr;
2509 enum dma_slave_buswidth addr_width;
2510 u32 maxburst;
2511 u32 ctrl = 0;
2512 int i = 0;
2513
2514 /* We only support mem to per or per to mem transfers */
2515 if (direction == DMA_DEV_TO_MEM) {
2516 addr = config->src_addr;
2517 addr_width = config->src_addr_width;
2518 maxburst = config->src_maxburst;
2519 } else if (direction == DMA_MEM_TO_DEV) {
2520 addr = config->dst_addr;
2521 addr_width = config->dst_addr_width;
2522 maxburst = config->dst_maxburst;
2523 } else {
2524 dev_err(COHC_2_DEV(cohc), "illegal channel mode\n");
2525 return -EINVAL;
2526 }
2527
2528 dev_dbg(COHC_2_DEV(cohc), "configure channel for %d byte transfers\n",
2529 addr_width);
2530 switch (addr_width) {
2531 case DMA_SLAVE_BUSWIDTH_1_BYTE:
2532 ctrl |=
2533 COH901318_CX_CTRL_SRC_BUS_SIZE_8_BITS |
2534 COH901318_CX_CTRL_DST_BUS_SIZE_8_BITS;
2535
2536 while (i < ARRAY_SIZE(burst_sizes)) {
2537 if (burst_sizes[i].burst_8bit <= maxburst)
2538 break;
2539 i++;
2540 }
2541
2542 break;
2543 case DMA_SLAVE_BUSWIDTH_2_BYTES:
2544 ctrl |=
2545 COH901318_CX_CTRL_SRC_BUS_SIZE_16_BITS |
2546 COH901318_CX_CTRL_DST_BUS_SIZE_16_BITS;
2547
2548 while (i < ARRAY_SIZE(burst_sizes)) {
2549 if (burst_sizes[i].burst_16bit <= maxburst)
2550 break;
2551 i++;
2552 }
2553
2554 break;
2555 case DMA_SLAVE_BUSWIDTH_4_BYTES:
2556 /* Direction doesn't matter here, it's 32/32 bits */
2557 ctrl |=
2558 COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS |
2559 COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS;
2560
2561 while (i < ARRAY_SIZE(burst_sizes)) {
2562 if (burst_sizes[i].burst_32bit <= maxburst)
2563 break;
2564 i++;
2565 }
2566
2567 break;
2568 default:
2569 dev_err(COHC_2_DEV(cohc),
2570 "bad runtimeconfig: alien address width\n");
2571 return -EINVAL;
2572 }
2573
2574 ctrl |= burst_sizes[i].reg;
2575 dev_dbg(COHC_2_DEV(cohc),
2576 "selected burst size %d bytes for address width %d bytes, maxburst %d\n",
2577 burst_sizes[i].burst_8bit, addr_width, maxburst);
2578
2579 cohc->addr = addr;
2580 cohc->ctrl = ctrl;
2581
2582 return 0;
2583}
2584
2585static int coh901318_dma_slave_config(struct dma_chan *chan,
2586 struct dma_slave_config *config)
2587{
2588 struct coh901318_chan *cohc = to_coh901318_chan(chan);
2589
2590 memcpy(&cohc->config, config, sizeof(*config));
2591
2592 return 0;
2593}
2594
2595static void coh901318_base_init(struct dma_device *dma, const int *pick_chans,
2596 struct coh901318_base *base)
2597{
2598 int chans_i;
2599 int i = 0;
2600 struct coh901318_chan *cohc;
2601
2602 INIT_LIST_HEAD(&dma->channels);
2603
2604 for (chans_i = 0; pick_chans[chans_i] != -1; chans_i += 2) {
2605 for (i = pick_chans[chans_i]; i <= pick_chans[chans_i+1]; i++) {
2606 cohc = &base->chans[i];
2607
2608 cohc->base = base;
2609 cohc->chan.device = dma;
2610 cohc->id = i;
2611
2612 /* TODO: do we really need this lock if only one
2613 * client is connected to each channel?
2614 */
2615
2616 spin_lock_init(&cohc->lock);
2617
2618 cohc->nbr_active_done = 0;
2619 cohc->busy = 0;
2620 INIT_LIST_HEAD(&cohc->free);
2621 INIT_LIST_HEAD(&cohc->active);
2622 INIT_LIST_HEAD(&cohc->queue);
2623
2624 tasklet_init(&cohc->tasklet, dma_tasklet,
2625 (unsigned long) cohc);
2626
2627 list_add_tail(&cohc->chan.device_node,
2628 &dma->channels);
2629 }
2630 }
2631}
2632
2633static int __init coh901318_probe(struct platform_device *pdev)
2634{
2635 int err = 0;
2636 struct coh901318_base *base;
2637 int irq;
2638 struct resource *io;
2639
2640 io = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2641 if (!io)
2642 return -ENODEV;
2643
2644 /* Map DMA controller registers to virtual memory */
2645 if (devm_request_mem_region(&pdev->dev,
2646 io->start,
2647 resource_size(io),
2648 pdev->dev.driver->name) == NULL)
2649 return -ENOMEM;
2650
2651 base = devm_kzalloc(&pdev->dev,
2652 ALIGN(sizeof(struct coh901318_base), 4) +
2653 U300_DMA_CHANNELS *
2654 sizeof(struct coh901318_chan),
2655 GFP_KERNEL);
2656 if (!base)
2657 return -ENOMEM;
2658
2659 base->chans = ((void *)base) + ALIGN(sizeof(struct coh901318_base), 4);
2660
2661 base->virtbase = devm_ioremap(&pdev->dev, io->start, resource_size(io));
2662 if (!base->virtbase)
2663 return -ENOMEM;
2664
2665 base->dev = &pdev->dev;
2666 spin_lock_init(&base->pm.lock);
2667 base->pm.started_channels = 0;
2668
2669 COH901318_DEBUGFS_ASSIGN(debugfs_dma_base, base);
2670
2671 irq = platform_get_irq(pdev, 0);
2672 if (irq < 0)
2673 return irq;
2674
2675 err = devm_request_irq(&pdev->dev, irq, dma_irq_handler, 0,
2676 "coh901318", base);
2677 if (err)
2678 return err;
2679
2680 base->irq = irq;
2681
2682 err = coh901318_pool_create(&base->pool, &pdev->dev,
2683 sizeof(struct coh901318_lli),
2684 32);
2685 if (err)
2686 return err;
2687
2688 /* init channels for device transfers */
2689 coh901318_base_init(&base->dma_slave, dma_slave_channels,
2690 base);
2691
2692 dma_cap_zero(base->dma_slave.cap_mask);
2693 dma_cap_set(DMA_SLAVE, base->dma_slave.cap_mask);
2694
2695 base->dma_slave.device_alloc_chan_resources = coh901318_alloc_chan_resources;
2696 base->dma_slave.device_free_chan_resources = coh901318_free_chan_resources;
2697 base->dma_slave.device_prep_slave_sg = coh901318_prep_slave_sg;
2698 base->dma_slave.device_tx_status = coh901318_tx_status;
2699 base->dma_slave.device_issue_pending = coh901318_issue_pending;
2700 base->dma_slave.device_config = coh901318_dma_slave_config;
2701 base->dma_slave.device_pause = coh901318_pause;
2702 base->dma_slave.device_resume = coh901318_resume;
2703 base->dma_slave.device_terminate_all = coh901318_terminate_all;
2704 base->dma_slave.dev = &pdev->dev;
2705
2706 err = dma_async_device_register(&base->dma_slave);
2707
2708 if (err)
2709 goto err_register_slave;
2710
2711 /* init channels for memcpy */
2712 coh901318_base_init(&base->dma_memcpy, dma_memcpy_channels,
2713 base);
2714
2715 dma_cap_zero(base->dma_memcpy.cap_mask);
2716 dma_cap_set(DMA_MEMCPY, base->dma_memcpy.cap_mask);
2717
2718 base->dma_memcpy.device_alloc_chan_resources = coh901318_alloc_chan_resources;
2719 base->dma_memcpy.device_free_chan_resources = coh901318_free_chan_resources;
2720 base->dma_memcpy.device_prep_dma_memcpy = coh901318_prep_memcpy;
2721 base->dma_memcpy.device_tx_status = coh901318_tx_status;
2722 base->dma_memcpy.device_issue_pending = coh901318_issue_pending;
2723 base->dma_memcpy.device_config = coh901318_dma_slave_config;
2724 base->dma_memcpy.device_pause = coh901318_pause;
2725 base->dma_memcpy.device_resume = coh901318_resume;
2726 base->dma_memcpy.device_terminate_all = coh901318_terminate_all;
2727 base->dma_memcpy.dev = &pdev->dev;
2728 /*
2729 * This controller can only access address at even 32bit boundaries,
2730 * i.e. 2^2
2731 */
2732 base->dma_memcpy.copy_align = DMAENGINE_ALIGN_4_BYTES;
2733 err = dma_async_device_register(&base->dma_memcpy);
2734
2735 if (err)
2736 goto err_register_memcpy;
2737
2738 err = of_dma_controller_register(pdev->dev.of_node, coh901318_xlate,
2739 base);
2740 if (err)
2741 goto err_register_of_dma;
2742
2743 platform_set_drvdata(pdev, base);
2744 dev_info(&pdev->dev, "Initialized COH901318 DMA on virtual base 0x%p\n",
2745 base->virtbase);
2746
2747 return err;
2748
2749 err_register_of_dma:
2750 dma_async_device_unregister(&base->dma_memcpy);
2751 err_register_memcpy:
2752 dma_async_device_unregister(&base->dma_slave);
2753 err_register_slave:
2754 coh901318_pool_destroy(&base->pool);
2755 return err;
2756}
2757static void coh901318_base_remove(struct coh901318_base *base, const int *pick_chans)
2758{
2759 int chans_i;
2760 int i = 0;
2761 struct coh901318_chan *cohc;
2762
2763 for (chans_i = 0; pick_chans[chans_i] != -1; chans_i += 2) {
2764 for (i = pick_chans[chans_i]; i <= pick_chans[chans_i+1]; i++) {
2765 cohc = &base->chans[i];
2766
2767 tasklet_kill(&cohc->tasklet);
2768 }
2769 }
2770
2771}
2772
2773static int coh901318_remove(struct platform_device *pdev)
2774{
2775 struct coh901318_base *base = platform_get_drvdata(pdev);
2776
2777 devm_free_irq(&pdev->dev, base->irq, base);
2778
2779 coh901318_base_remove(base, dma_slave_channels);
2780 coh901318_base_remove(base, dma_memcpy_channels);
2781
2782 of_dma_controller_free(pdev->dev.of_node);
2783 dma_async_device_unregister(&base->dma_memcpy);
2784 dma_async_device_unregister(&base->dma_slave);
2785 coh901318_pool_destroy(&base->pool);
2786 return 0;
2787}
2788
2789static const struct of_device_id coh901318_dt_match[] = {
2790 { .compatible = "stericsson,coh901318" },
2791 {},
2792};
2793
2794static struct platform_driver coh901318_driver = {
2795 .remove = coh901318_remove,
2796 .driver = {
2797 .name = "coh901318",
2798 .of_match_table = coh901318_dt_match,
2799 },
2800};
2801
2802static int __init coh901318_init(void)
2803{
2804 return platform_driver_probe(&coh901318_driver, coh901318_probe);
2805}
2806subsys_initcall(coh901318_init);
2807
2808static void __exit coh901318_exit(void)
2809{
2810 platform_driver_unregister(&coh901318_driver);
2811}
2812module_exit(coh901318_exit);
2813
2814MODULE_LICENSE("GPL");
2815MODULE_AUTHOR("Per Friden");
2816