Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[linux-btrfs-devel.git] / arch / arm / mach-iop13xx / include / mach / adma.h
blob6d3782d85a9ff6d2db65a71de2632cc0b1151b33
1 /*
2 * Copyright(c) 2006, Intel Corporation.
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.
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.
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.
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>
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)))
40 struct 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;
51 struct 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;
72 struct 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;
81 struct iop13xx_adma_desc_hw {
82 u32 next_desc;
83 union {
84 u32 desc_ctrl;
85 struct iop13xx_adma_desc_ctrl desc_ctrl_field;
87 union {
88 u32 crc_addr;
89 u32 block_fill_data;
90 u32 q_dest_addr;
92 union {
93 u32 byte_count;
94 struct iop13xx_adma_byte_count byte_count_field;
96 union {
97 u32 dest_addr;
98 u32 p_dest_addr;
100 union {
101 u32 upper_dest_addr;
102 u32 pq_upper_dest_addr;
104 struct iop13xx_adma_src src[1];
107 struct 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;
126 struct 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;
144 u32 q_dest_addr;
145 u32 q_upper_dest_addr;
148 static inline int iop_adma_get_max_xor(void)
150 return 16;
153 #define iop_adma_get_max_pq iop_adma_get_max_xor
155 static inline u32 iop_chan_get_current_descriptor(struct iop_adma_chan *chan)
157 return __raw_readl(ADMA_ADAR(chan));
160 static inline void iop_chan_set_next_descriptor(struct iop_adma_chan *chan,
161 u32 next_desc_addr)
163 __raw_writel(next_desc_addr, ADMA_ANDAR(chan));
166 #define ADMA_STATUS_BUSY (1 << 13)
168 static inline char iop_chan_is_busy(struct iop_adma_chan *chan)
170 if (__raw_readl(ADMA_ACSR(chan)) &
171 ADMA_STATUS_BUSY)
172 return 1;
173 else
174 return 0;
177 static inline int
178 iop_chan_get_desc_align(struct iop_adma_chan *chan, int num_slots)
180 return 1;
182 #define iop_desc_is_aligned(x, y) 1
184 static inline int
185 iop_chan_memcpy_slot_count(size_t len, int *slots_per_op)
187 *slots_per_op = 1;
188 return 1;
191 #define iop_chan_interrupt_slot_count(s, c) iop_chan_memcpy_slot_count(0, s)
193 static inline int
194 iop_chan_memset_slot_count(size_t len, int *slots_per_op)
196 *slots_per_op = 1;
197 return 1;
200 static inline int
201 iop_chan_xor_slot_count(size_t len, int src_cnt, int *slots_per_op)
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,
208 *slots_per_op = slot_count_table[src_cnt - 1];
209 return *slots_per_op;
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
216 #define IOP_ADMA_PQ_MAX_BYTE_COUNT ADMA_MAX_BYTE_COUNT
217 #define iop_chan_zero_sum_slot_count(l, s, o) iop_chan_xor_slot_count(l, s, o)
218 #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
221 static inline u32 iop_desc_get_dest_addr(struct iop_adma_desc_slot *desc,
222 struct iop_adma_chan *chan)
224 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
225 return hw_desc->dest_addr;
228 static inline u32 iop_desc_get_qdest_addr(struct iop_adma_desc_slot *desc,
229 struct iop_adma_chan *chan)
231 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
232 return hw_desc->q_dest_addr;
235 static inline u32 iop_desc_get_byte_count(struct iop_adma_desc_slot *desc,
236 struct iop_adma_chan *chan)
238 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
239 return hw_desc->byte_count_field.byte_count;
242 static inline u32 iop_desc_get_src_addr(struct iop_adma_desc_slot *desc,
243 struct iop_adma_chan *chan,
244 int src_idx)
246 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
247 return hw_desc->src[src_idx].src_addr;
250 static inline u32 iop_desc_get_src_count(struct iop_adma_desc_slot *desc,
251 struct iop_adma_chan *chan)
253 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
254 return hw_desc->desc_ctrl_field.src_select + 1;
257 static inline void
258 iop_desc_init_memcpy(struct iop_adma_desc_slot *desc, unsigned long flags)
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;
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;
273 static inline void
274 iop_desc_init_memset(struct iop_adma_desc_slot *desc, unsigned long flags)
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;
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;
290 /* to do: support buffers larger than ADMA_MAX_BYTE_COUNT */
291 static inline void
292 iop_desc_init_xor(struct iop_adma_desc_slot *desc, int src_cnt,
293 unsigned long flags)
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;
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;
309 #define iop_desc_init_null_xor(d, s, i) iop_desc_init_xor(d, s, i)
311 /* to do: support buffers larger than ADMA_MAX_BYTE_COUNT */
312 static inline int
313 iop_desc_init_zero_sum(struct iop_adma_desc_slot *desc, int src_cnt,
314 unsigned long flags)
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;
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;
331 return 1;
334 static inline void
335 iop_desc_init_pq(struct iop_adma_desc_slot *desc, int src_cnt,
336 unsigned long flags)
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;
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;
353 static inline int iop_desc_is_pq(struct iop_adma_desc_slot *desc)
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;
361 u_desc_ctrl.value = hw_desc->desc_ctrl;
362 return u_desc_ctrl.field.pq_xfer_en;
365 static inline void
366 iop_desc_init_pq_zero_sum(struct iop_adma_desc_slot *desc, int src_cnt,
367 unsigned long flags)
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;
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;
386 static inline void iop_desc_set_byte_count(struct iop_adma_desc_slot *desc,
387 struct iop_adma_chan *chan,
388 u32 byte_count)
390 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
391 hw_desc->byte_count = byte_count;
394 static inline void
395 iop_desc_set_zero_sum_byte_count(struct iop_adma_desc_slot *desc, u32 len)
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;
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);
411 if (len) {
412 iter = iop_hw_desc_slot_idx(hw_desc, i);
413 iter->byte_count = len;
418 #define iop_desc_set_pq_zero_sum_byte_count iop_desc_set_zero_sum_byte_count
420 static inline void iop_desc_set_dest_addr(struct iop_adma_desc_slot *desc,
421 struct iop_adma_chan *chan,
422 dma_addr_t addr)
424 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
425 hw_desc->dest_addr = addr;
426 hw_desc->upper_dest_addr = 0;
429 static inline void
430 iop_desc_set_pq_addr(struct iop_adma_desc_slot *desc, dma_addr_t *addr)
432 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
434 hw_desc->dest_addr = addr[0];
435 hw_desc->q_dest_addr = addr[1];
436 hw_desc->upper_dest_addr = 0;
439 static inline void iop_desc_set_memcpy_src_addr(struct iop_adma_desc_slot *desc,
440 dma_addr_t addr)
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;
447 static inline void iop_desc_set_xor_src_addr(struct iop_adma_desc_slot *desc,
448 int src_idx, dma_addr_t addr)
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;
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;
463 } while (slot_cnt);
466 static inline void
467 iop_desc_set_pq_src_addr(struct iop_adma_desc_slot *desc, int src_idx,
468 dma_addr_t addr, unsigned char coef)
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;
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;
486 } while (slot_cnt);
489 static inline void
490 iop_desc_init_interrupt(struct iop_adma_desc_slot *desc,
491 struct iop_adma_chan *chan)
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);
499 #define iop_desc_set_zero_sum_src_addr iop_desc_set_xor_src_addr
500 #define iop_desc_set_pq_zero_sum_src_addr iop_desc_set_pq_src_addr
502 static inline void
503 iop_desc_set_pq_zero_sum_addr(struct iop_adma_desc_slot *desc, int pq_idx,
504 dma_addr_t *src)
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]);
510 static inline void iop_desc_set_next_desc(struct iop_adma_desc_slot *desc,
511 u32 next_desc_addr)
513 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
515 iop_paranoia(hw_desc->next_desc);
516 hw_desc->next_desc = next_desc_addr;
519 static inline u32 iop_desc_get_next_desc(struct iop_adma_desc_slot *desc)
521 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
522 return hw_desc->next_desc;
525 static inline void iop_desc_clear_next_desc(struct iop_adma_desc_slot *desc)
527 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
528 hw_desc->next_desc = 0;
531 static inline void iop_desc_set_block_fill_val(struct iop_adma_desc_slot *desc,
532 u32 val)
534 struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
535 hw_desc->block_fill_data = val;
538 static inline enum sum_check_flags
539 iop_desc_get_zero_result(struct iop_adma_desc_slot *desc)
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;
544 enum sum_check_flags flags;
546 BUG_ON(!(byte_count.tx_complete && desc_ctrl.zero_result));
548 flags = byte_count.zero_result_err_q << SUM_CHECK_Q;
549 flags |= byte_count.zero_result_err << SUM_CHECK_P;
551 return flags;
554 static inline void iop_chan_append(struct iop_adma_chan *chan)
556 u32 adma_accr;
558 adma_accr = __raw_readl(ADMA_ACCR(chan));
559 adma_accr |= 0x2;
560 __raw_writel(adma_accr, ADMA_ACCR(chan));
563 static inline u32 iop_chan_get_status(struct iop_adma_chan *chan)
565 return __raw_readl(ADMA_ACSR(chan));
568 static inline void iop_chan_disable(struct iop_adma_chan *chan)
570 u32 adma_chan_ctrl = __raw_readl(ADMA_ACCR(chan));
571 adma_chan_ctrl &= ~0x1;
572 __raw_writel(adma_chan_ctrl, ADMA_ACCR(chan));
575 static inline void iop_chan_enable(struct iop_adma_chan *chan)
577 u32 adma_chan_ctrl;
579 adma_chan_ctrl = __raw_readl(ADMA_ACCR(chan));
580 adma_chan_ctrl |= 0x1;
581 __raw_writel(adma_chan_ctrl, ADMA_ACCR(chan));
584 static inline void iop_adma_device_clear_eot_status(struct iop_adma_chan *chan)
586 u32 status = __raw_readl(ADMA_ACSR(chan));
587 status &= (1 << 12);
588 __raw_writel(status, ADMA_ACSR(chan));
591 static inline void iop_adma_device_clear_eoc_status(struct iop_adma_chan *chan)
593 u32 status = __raw_readl(ADMA_ACSR(chan));
594 status &= (1 << 11);
595 __raw_writel(status, ADMA_ACSR(chan));
598 static inline void iop_adma_device_clear_err_status(struct iop_adma_chan *chan)
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));
605 static inline int
606 iop_is_err_int_parity(unsigned long status, struct iop_adma_chan *chan)
608 return test_bit(9, &status);
611 static inline int
612 iop_is_err_mcu_abort(unsigned long status, struct iop_adma_chan *chan)
614 return test_bit(5, &status);
617 static inline int
618 iop_is_err_int_tabort(unsigned long status, struct iop_adma_chan *chan)
620 return test_bit(4, &status);
623 static inline int
624 iop_is_err_int_mabort(unsigned long status, struct iop_adma_chan *chan)
626 return test_bit(3, &status);
629 static inline int
630 iop_is_err_pci_tabort(unsigned long status, struct iop_adma_chan *chan)
632 return 0;
635 static inline int
636 iop_is_err_pci_mabort(unsigned long status, struct iop_adma_chan *chan)
638 return 0;
641 static inline int
642 iop_is_err_split_tx(unsigned long status, struct iop_adma_chan *chan)
644 return 0;
647 #endif /* _ADMA_H */