blob: 6d3782d85a9ff6d2db65a71de2632cc0b1151b33 [file] [log] [blame]
Russell Kinga09e64f2008-08-05 16:14:15 +01001/*
2 * Copyright(c) 2006, Intel Corporation.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License along with
14 * this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
16 *
17 */
18#ifndef _ADMA_H
19#define _ADMA_H
20#include <linux/types.h>
21#include <linux/io.h>
22#include <mach/hardware.h>
23#include <asm/hardware/iop_adma.h>
24
25#define ADMA_ACCR(chan) (chan->mmr_base + 0x0)
26#define ADMA_ACSR(chan) (chan->mmr_base + 0x4)
27#define ADMA_ADAR(chan) (chan->mmr_base + 0x8)
28#define ADMA_IIPCR(chan) (chan->mmr_base + 0x18)
29#define ADMA_IIPAR(chan) (chan->mmr_base + 0x1c)
30#define ADMA_IIPUAR(chan) (chan->mmr_base + 0x20)
31#define ADMA_ANDAR(chan) (chan->mmr_base + 0x24)
32#define ADMA_ADCR(chan) (chan->mmr_base + 0x28)
33#define ADMA_CARMD(chan) (chan->mmr_base + 0x2c)
34#define ADMA_ABCR(chan) (chan->mmr_base + 0x30)
35#define ADMA_DLADR(chan) (chan->mmr_base + 0x34)
36#define ADMA_DUADR(chan) (chan->mmr_base + 0x38)
37#define ADMA_SLAR(src, chan) (chan->mmr_base + (0x3c + (src << 3)))
38#define ADMA_SUAR(src, chan) (chan->mmr_base + (0x40 + (src << 3)))
39
40struct iop13xx_adma_src {
41 u32 src_addr;
42 union {
43 u32 upper_src_addr;
44 struct {
45 unsigned int pq_upper_src_addr:24;
46 unsigned int pq_dmlt:8;
47 };
48 };
49};
50
51struct iop13xx_adma_desc_ctrl {
52 unsigned int int_en:1;
53 unsigned int xfer_dir:2;
54 unsigned int src_select:4;
55 unsigned int zero_result:1;
56 unsigned int block_fill_en:1;
57 unsigned int crc_gen_en:1;
58 unsigned int crc_xfer_dis:1;
59 unsigned int crc_seed_fetch_dis:1;
60 unsigned int status_write_back_en:1;
61 unsigned int endian_swap_en:1;
62 unsigned int reserved0:2;
63 unsigned int pq_update_xfer_en:1;
64 unsigned int dual_xor_en:1;
65 unsigned int pq_xfer_en:1;
66 unsigned int p_xfer_dis:1;
67 unsigned int reserved1:10;
68 unsigned int relax_order_en:1;
69 unsigned int no_snoop_en:1;
70};
71
72struct iop13xx_adma_byte_count {
73 unsigned int byte_count:24;
74 unsigned int host_if:3;
75 unsigned int reserved:2;
76 unsigned int zero_result_err_q:1;
77 unsigned int zero_result_err:1;
78 unsigned int tx_complete:1;
79};
80
81struct iop13xx_adma_desc_hw {
82 u32 next_desc;
83 union {
84 u32 desc_ctrl;
85 struct iop13xx_adma_desc_ctrl desc_ctrl_field;
86 };
87 union {
88 u32 crc_addr;
89 u32 block_fill_data;
90 u32 q_dest_addr;
91 };
92 union {
93 u32 byte_count;
94 struct iop13xx_adma_byte_count byte_count_field;
95 };
96 union {
97 u32 dest_addr;
98 u32 p_dest_addr;
99 };
100 union {
101 u32 upper_dest_addr;
102 u32 pq_upper_dest_addr;
103 };
104 struct iop13xx_adma_src src[1];
105};
106
107struct iop13xx_adma_desc_dual_xor {
108 u32 next_desc;
109 u32 desc_ctrl;
110 u32 reserved;
111 u32 byte_count;
112 u32 h_dest_addr;
113 u32 h_upper_dest_addr;
114 u32 src0_addr;
115 u32 upper_src0_addr;
116 u32 src1_addr;
117 u32 upper_src1_addr;
118 u32 h_src_addr;
119 u32 h_upper_src_addr;
120 u32 d_src_addr;
121 u32 d_upper_src_addr;
122 u32 d_dest_addr;
123 u32 d_upper_dest_addr;
124};
125
126struct iop13xx_adma_desc_pq_update {
127 u32 next_desc;
128 u32 desc_ctrl;
129 u32 reserved;
130 u32 byte_count;
131 u32 p_dest_addr;
132 u32 p_upper_dest_addr;
133 u32 src0_addr;
134 u32 upper_src0_addr;
135 u32 src1_addr;
136 u32 upper_src1_addr;
137 u32 p_src_addr;
138 u32 p_upper_src_addr;
139 u32 q_src_addr;
140 struct {
141 unsigned int q_upper_src_addr:24;
142 unsigned int q_dmlt:8;
143 };
144 u32 q_dest_addr;
145 u32 q_upper_dest_addr;
146};
147
148static inline int iop_adma_get_max_xor(void)
149{
150 return 16;
151}
152
Dan Williams7bf649a2009-08-28 14:32:04 -0700153#define iop_adma_get_max_pq iop_adma_get_max_xor
154
Russell Kinga09e64f2008-08-05 16:14:15 +0100155static inline u32 iop_chan_get_current_descriptor(struct iop_adma_chan *chan)
156{
157 return __raw_readl(ADMA_ADAR(chan));
158}
159
160static inline void iop_chan_set_next_descriptor(struct iop_adma_chan *chan,
161 u32 next_desc_addr)
162{
163 __raw_writel(next_desc_addr, ADMA_ANDAR(chan));
164}
165
166#define ADMA_STATUS_BUSY (1 << 13)
167
168static inline char iop_chan_is_busy(struct iop_adma_chan *chan)
169{
170 if (__raw_readl(ADMA_ACSR(chan)) &
171 ADMA_STATUS_BUSY)
172 return 1;
173 else
174 return 0;
175}
176
177static inline int
178iop_chan_get_desc_align(struct iop_adma_chan *chan, int num_slots)
179{
180 return 1;
181}
182#define iop_desc_is_aligned(x, y) 1
183
184static inline int
185iop_chan_memcpy_slot_count(size_t len, int *slots_per_op)
186{
187 *slots_per_op = 1;
188 return 1;
189}
190
191#define iop_chan_interrupt_slot_count(s, c) iop_chan_memcpy_slot_count(0, s)
192
193static inline int
194iop_chan_memset_slot_count(size_t len, int *slots_per_op)
195{
196 *slots_per_op = 1;
197 return 1;
198}
199
200static inline int
201iop_chan_xor_slot_count(size_t len, int src_cnt, int *slots_per_op)
202{
203 static const char slot_count_table[] = { 1, 2, 2, 2,
204 2, 3, 3, 3,
205 3, 4, 4, 4,
206 4, 5, 5, 5,
207 };
208 *slots_per_op = slot_count_table[src_cnt - 1];
209 return *slots_per_op;
210}
211
212#define ADMA_MAX_BYTE_COUNT (16 * 1024 * 1024)
213#define IOP_ADMA_MAX_BYTE_COUNT ADMA_MAX_BYTE_COUNT
214#define IOP_ADMA_ZERO_SUM_MAX_BYTE_COUNT ADMA_MAX_BYTE_COUNT
215#define IOP_ADMA_XOR_MAX_BYTE_COUNT ADMA_MAX_BYTE_COUNT
Dan Williams7bf649a2009-08-28 14:32:04 -0700216#define IOP_ADMA_PQ_MAX_BYTE_COUNT ADMA_MAX_BYTE_COUNT
Russell Kinga09e64f2008-08-05 16:14:15 +0100217#define iop_chan_zero_sum_slot_count(l, s, o) iop_chan_xor_slot_count(l, s, o)
Dan Williams7bf649a2009-08-28 14:32:04 -0700218#define iop_chan_pq_slot_count iop_chan_xor_slot_count
219#define iop_chan_pq_zero_sum_slot_count iop_chan_xor_slot_count
Russell Kinga09e64f2008-08-05 16:14:15 +0100220
221static inline u32 iop_desc_get_dest_addr(struct iop_adma_desc_slot *desc,
222 struct iop_adma_chan *chan)
223{
224 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
225 return hw_desc->dest_addr;
226}
227
Dan Williams7bf649a2009-08-28 14:32:04 -0700228static inline u32 iop_desc_get_qdest_addr(struct iop_adma_desc_slot *desc,
229 struct iop_adma_chan *chan)
230{
231 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
232 return hw_desc->q_dest_addr;
233}
234
Russell Kinga09e64f2008-08-05 16:14:15 +0100235static inline u32 iop_desc_get_byte_count(struct iop_adma_desc_slot *desc,
236 struct iop_adma_chan *chan)
237{
238 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
239 return hw_desc->byte_count_field.byte_count;
240}
241
242static inline u32 iop_desc_get_src_addr(struct iop_adma_desc_slot *desc,
243 struct iop_adma_chan *chan,
244 int src_idx)
245{
246 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
247 return hw_desc->src[src_idx].src_addr;
248}
249
250static inline u32 iop_desc_get_src_count(struct iop_adma_desc_slot *desc,
251 struct iop_adma_chan *chan)
252{
253 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
254 return hw_desc->desc_ctrl_field.src_select + 1;
255}
256
257static inline void
258iop_desc_init_memcpy(struct iop_adma_desc_slot *desc, unsigned long flags)
259{
260 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
261 union {
262 u32 value;
263 struct iop13xx_adma_desc_ctrl field;
264 } u_desc_ctrl;
265
266 u_desc_ctrl.value = 0;
267 u_desc_ctrl.field.xfer_dir = 3; /* local to internal bus */
268 u_desc_ctrl.field.int_en = flags & DMA_PREP_INTERRUPT;
269 hw_desc->desc_ctrl = u_desc_ctrl.value;
270 hw_desc->crc_addr = 0;
271}
272
273static inline void
274iop_desc_init_memset(struct iop_adma_desc_slot *desc, unsigned long flags)
275{
276 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
277 union {
278 u32 value;
279 struct iop13xx_adma_desc_ctrl field;
280 } u_desc_ctrl;
281
282 u_desc_ctrl.value = 0;
283 u_desc_ctrl.field.xfer_dir = 3; /* local to internal bus */
284 u_desc_ctrl.field.block_fill_en = 1;
285 u_desc_ctrl.field.int_en = flags & DMA_PREP_INTERRUPT;
286 hw_desc->desc_ctrl = u_desc_ctrl.value;
287 hw_desc->crc_addr = 0;
288}
289
290/* to do: support buffers larger than ADMA_MAX_BYTE_COUNT */
291static inline void
292iop_desc_init_xor(struct iop_adma_desc_slot *desc, int src_cnt,
293 unsigned long flags)
294{
295 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
296 union {
297 u32 value;
298 struct iop13xx_adma_desc_ctrl field;
299 } u_desc_ctrl;
300
301 u_desc_ctrl.value = 0;
302 u_desc_ctrl.field.src_select = src_cnt - 1;
303 u_desc_ctrl.field.xfer_dir = 3; /* local to internal bus */
304 u_desc_ctrl.field.int_en = flags & DMA_PREP_INTERRUPT;
305 hw_desc->desc_ctrl = u_desc_ctrl.value;
306 hw_desc->crc_addr = 0;
307
308}
309#define iop_desc_init_null_xor(d, s, i) iop_desc_init_xor(d, s, i)
310
311/* to do: support buffers larger than ADMA_MAX_BYTE_COUNT */
312static inline int
313iop_desc_init_zero_sum(struct iop_adma_desc_slot *desc, int src_cnt,
314 unsigned long flags)
315{
316 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
317 union {
318 u32 value;
319 struct iop13xx_adma_desc_ctrl field;
320 } u_desc_ctrl;
321
322 u_desc_ctrl.value = 0;
323 u_desc_ctrl.field.src_select = src_cnt - 1;
324 u_desc_ctrl.field.xfer_dir = 3; /* local to internal bus */
325 u_desc_ctrl.field.zero_result = 1;
326 u_desc_ctrl.field.status_write_back_en = 1;
327 u_desc_ctrl.field.int_en = flags & DMA_PREP_INTERRUPT;
328 hw_desc->desc_ctrl = u_desc_ctrl.value;
329 hw_desc->crc_addr = 0;
330
331 return 1;
332}
333
Dan Williams7bf649a2009-08-28 14:32:04 -0700334static inline void
335iop_desc_init_pq(struct iop_adma_desc_slot *desc, int src_cnt,
336 unsigned long flags)
337{
338 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
339 union {
340 u32 value;
341 struct iop13xx_adma_desc_ctrl field;
342 } u_desc_ctrl;
343
344 u_desc_ctrl.value = 0;
345 u_desc_ctrl.field.src_select = src_cnt - 1;
346 u_desc_ctrl.field.xfer_dir = 3; /* local to internal bus */
347 u_desc_ctrl.field.pq_xfer_en = 1;
348 u_desc_ctrl.field.p_xfer_dis = !!(flags & DMA_PREP_PQ_DISABLE_P);
349 u_desc_ctrl.field.int_en = flags & DMA_PREP_INTERRUPT;
350 hw_desc->desc_ctrl = u_desc_ctrl.value;
351}
352
353static inline int iop_desc_is_pq(struct iop_adma_desc_slot *desc)
354{
355 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
356 union {
357 u32 value;
358 struct iop13xx_adma_desc_ctrl field;
359 } u_desc_ctrl;
360
361 u_desc_ctrl.value = hw_desc->desc_ctrl;
362 return u_desc_ctrl.field.pq_xfer_en;
363}
364
365static inline void
366iop_desc_init_pq_zero_sum(struct iop_adma_desc_slot *desc, int src_cnt,
367 unsigned long flags)
368{
369 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
370 union {
371 u32 value;
372 struct iop13xx_adma_desc_ctrl field;
373 } u_desc_ctrl;
374
375 u_desc_ctrl.value = 0;
376 u_desc_ctrl.field.src_select = src_cnt - 1;
377 u_desc_ctrl.field.xfer_dir = 3; /* local to internal bus */
378 u_desc_ctrl.field.zero_result = 1;
379 u_desc_ctrl.field.status_write_back_en = 1;
380 u_desc_ctrl.field.pq_xfer_en = 1;
381 u_desc_ctrl.field.p_xfer_dis = !!(flags & DMA_PREP_PQ_DISABLE_P);
382 u_desc_ctrl.field.int_en = flags & DMA_PREP_INTERRUPT;
383 hw_desc->desc_ctrl = u_desc_ctrl.value;
384}
385
Russell Kinga09e64f2008-08-05 16:14:15 +0100386static inline void iop_desc_set_byte_count(struct iop_adma_desc_slot *desc,
387 struct iop_adma_chan *chan,
388 u32 byte_count)
389{
390 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
391 hw_desc->byte_count = byte_count;
392}
393
394static inline void
395iop_desc_set_zero_sum_byte_count(struct iop_adma_desc_slot *desc, u32 len)
396{
397 int slots_per_op = desc->slots_per_op;
398 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc, *iter;
399 int i = 0;
400
401 if (len <= IOP_ADMA_ZERO_SUM_MAX_BYTE_COUNT) {
402 hw_desc->byte_count = len;
403 } else {
404 do {
405 iter = iop_hw_desc_slot_idx(hw_desc, i);
406 iter->byte_count = IOP_ADMA_ZERO_SUM_MAX_BYTE_COUNT;
407 len -= IOP_ADMA_ZERO_SUM_MAX_BYTE_COUNT;
408 i += slots_per_op;
409 } while (len > IOP_ADMA_ZERO_SUM_MAX_BYTE_COUNT);
410
411 if (len) {
412 iter = iop_hw_desc_slot_idx(hw_desc, i);
413 iter->byte_count = len;
414 }
415 }
416}
417
Dan Williams7bf649a2009-08-28 14:32:04 -0700418#define iop_desc_set_pq_zero_sum_byte_count iop_desc_set_zero_sum_byte_count
Russell Kinga09e64f2008-08-05 16:14:15 +0100419
420static inline void iop_desc_set_dest_addr(struct iop_adma_desc_slot *desc,
421 struct iop_adma_chan *chan,
422 dma_addr_t addr)
423{
424 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
425 hw_desc->dest_addr = addr;
426 hw_desc->upper_dest_addr = 0;
427}
428
Dan Williams7bf649a2009-08-28 14:32:04 -0700429static inline void
430iop_desc_set_pq_addr(struct iop_adma_desc_slot *desc, dma_addr_t *addr)
431{
432 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
433
434 hw_desc->dest_addr = addr[0];
435 hw_desc->q_dest_addr = addr[1];
436 hw_desc->upper_dest_addr = 0;
437}
438
Russell Kinga09e64f2008-08-05 16:14:15 +0100439static inline void iop_desc_set_memcpy_src_addr(struct iop_adma_desc_slot *desc,
440 dma_addr_t addr)
441{
442 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
443 hw_desc->src[0].src_addr = addr;
444 hw_desc->src[0].upper_src_addr = 0;
445}
446
447static inline void iop_desc_set_xor_src_addr(struct iop_adma_desc_slot *desc,
448 int src_idx, dma_addr_t addr)
449{
450 int slot_cnt = desc->slot_cnt, slots_per_op = desc->slots_per_op;
451 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc, *iter;
452 int i = 0;
453
454 do {
455 iter = iop_hw_desc_slot_idx(hw_desc, i);
456 iter->src[src_idx].src_addr = addr;
457 iter->src[src_idx].upper_src_addr = 0;
458 slot_cnt -= slots_per_op;
459 if (slot_cnt) {
460 i += slots_per_op;
461 addr += IOP_ADMA_XOR_MAX_BYTE_COUNT;
462 }
463 } while (slot_cnt);
464}
465
466static inline void
Dan Williams7bf649a2009-08-28 14:32:04 -0700467iop_desc_set_pq_src_addr(struct iop_adma_desc_slot *desc, int src_idx,
468 dma_addr_t addr, unsigned char coef)
469{
470 int slot_cnt = desc->slot_cnt, slots_per_op = desc->slots_per_op;
471 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc, *iter;
472 struct iop13xx_adma_src *src;
473 int i = 0;
474
475 do {
476 iter = iop_hw_desc_slot_idx(hw_desc, i);
477 src = &iter->src[src_idx];
478 src->src_addr = addr;
479 src->pq_upper_src_addr = 0;
480 src->pq_dmlt = coef;
481 slot_cnt -= slots_per_op;
482 if (slot_cnt) {
483 i += slots_per_op;
484 addr += IOP_ADMA_PQ_MAX_BYTE_COUNT;
485 }
486 } while (slot_cnt);
487}
488
489static inline void
Russell Kinga09e64f2008-08-05 16:14:15 +0100490iop_desc_init_interrupt(struct iop_adma_desc_slot *desc,
491 struct iop_adma_chan *chan)
492{
493 iop_desc_init_memcpy(desc, 1);
494 iop_desc_set_byte_count(desc, chan, 0);
495 iop_desc_set_dest_addr(desc, chan, 0);
496 iop_desc_set_memcpy_src_addr(desc, 0);
497}
498
499#define iop_desc_set_zero_sum_src_addr iop_desc_set_xor_src_addr
Dan Williams7bf649a2009-08-28 14:32:04 -0700500#define iop_desc_set_pq_zero_sum_src_addr iop_desc_set_pq_src_addr
501
502static inline void
503iop_desc_set_pq_zero_sum_addr(struct iop_adma_desc_slot *desc, int pq_idx,
504 dma_addr_t *src)
505{
506 iop_desc_set_xor_src_addr(desc, pq_idx, src[pq_idx]);
507 iop_desc_set_xor_src_addr(desc, pq_idx+1, src[pq_idx+1]);
508}
Russell Kinga09e64f2008-08-05 16:14:15 +0100509
510static inline void iop_desc_set_next_desc(struct iop_adma_desc_slot *desc,
511 u32 next_desc_addr)
512{
513 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
Dan Williams65e50382008-11-11 13:12:33 -0700514
515 iop_paranoia(hw_desc->next_desc);
Russell Kinga09e64f2008-08-05 16:14:15 +0100516 hw_desc->next_desc = next_desc_addr;
517}
518
519static inline u32 iop_desc_get_next_desc(struct iop_adma_desc_slot *desc)
520{
521 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
522 return hw_desc->next_desc;
523}
524
525static inline void iop_desc_clear_next_desc(struct iop_adma_desc_slot *desc)
526{
527 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
528 hw_desc->next_desc = 0;
529}
530
531static inline void iop_desc_set_block_fill_val(struct iop_adma_desc_slot *desc,
532 u32 val)
533{
534 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
535 hw_desc->block_fill_data = val;
536}
537
Dan Williamsad283ea2009-08-29 19:09:26 -0700538static inline enum sum_check_flags
539iop_desc_get_zero_result(struct iop_adma_desc_slot *desc)
Russell Kinga09e64f2008-08-05 16:14:15 +0100540{
541 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
542 struct iop13xx_adma_desc_ctrl desc_ctrl = hw_desc->desc_ctrl_field;
543 struct iop13xx_adma_byte_count byte_count = hw_desc->byte_count_field;
Dan Williamsad283ea2009-08-29 19:09:26 -0700544 enum sum_check_flags flags;
Russell Kinga09e64f2008-08-05 16:14:15 +0100545
546 BUG_ON(!(byte_count.tx_complete && desc_ctrl.zero_result));
547
Dan Williamsad283ea2009-08-29 19:09:26 -0700548 flags = byte_count.zero_result_err_q << SUM_CHECK_Q;
549 flags |= byte_count.zero_result_err << SUM_CHECK_P;
550
551 return flags;
Russell Kinga09e64f2008-08-05 16:14:15 +0100552}
553
554static inline void iop_chan_append(struct iop_adma_chan *chan)
555{
556 u32 adma_accr;
557
558 adma_accr = __raw_readl(ADMA_ACCR(chan));
559 adma_accr |= 0x2;
560 __raw_writel(adma_accr, ADMA_ACCR(chan));
561}
562
563static inline u32 iop_chan_get_status(struct iop_adma_chan *chan)
564{
565 return __raw_readl(ADMA_ACSR(chan));
566}
567
568static inline void iop_chan_disable(struct iop_adma_chan *chan)
569{
570 u32 adma_chan_ctrl = __raw_readl(ADMA_ACCR(chan));
571 adma_chan_ctrl &= ~0x1;
572 __raw_writel(adma_chan_ctrl, ADMA_ACCR(chan));
573}
574
575static inline void iop_chan_enable(struct iop_adma_chan *chan)
576{
577 u32 adma_chan_ctrl;
578
579 adma_chan_ctrl = __raw_readl(ADMA_ACCR(chan));
580 adma_chan_ctrl |= 0x1;
581 __raw_writel(adma_chan_ctrl, ADMA_ACCR(chan));
582}
583
584static inline void iop_adma_device_clear_eot_status(struct iop_adma_chan *chan)
585{
586 u32 status = __raw_readl(ADMA_ACSR(chan));
587 status &= (1 << 12);
588 __raw_writel(status, ADMA_ACSR(chan));
589}
590
591static inline void iop_adma_device_clear_eoc_status(struct iop_adma_chan *chan)
592{
593 u32 status = __raw_readl(ADMA_ACSR(chan));
594 status &= (1 << 11);
595 __raw_writel(status, ADMA_ACSR(chan));
596}
597
598static inline void iop_adma_device_clear_err_status(struct iop_adma_chan *chan)
599{
600 u32 status = __raw_readl(ADMA_ACSR(chan));
601 status &= (1 << 9) | (1 << 5) | (1 << 4) | (1 << 3);
602 __raw_writel(status, ADMA_ACSR(chan));
603}
604
605static inline int
606iop_is_err_int_parity(unsigned long status, struct iop_adma_chan *chan)
607{
608 return test_bit(9, &status);
609}
610
611static inline int
612iop_is_err_mcu_abort(unsigned long status, struct iop_adma_chan *chan)
613{
614 return test_bit(5, &status);
615}
616
617static inline int
618iop_is_err_int_tabort(unsigned long status, struct iop_adma_chan *chan)
619{
620 return test_bit(4, &status);
621}
622
623static inline int
624iop_is_err_int_mabort(unsigned long status, struct iop_adma_chan *chan)
625{
626 return test_bit(3, &status);
627}
628
629static inline int
630iop_is_err_pci_tabort(unsigned long status, struct iop_adma_chan *chan)
631{
632 return 0;
633}
634
635static inline int
636iop_is_err_pci_mabort(unsigned long status, struct iop_adma_chan *chan)
637{
638 return 0;
639}
640
641static inline int
642iop_is_err_split_tx(unsigned long status, struct iop_adma_chan *chan)
643{
644 return 0;
645}
646
647#endif /* _ADMA_H */