arch/arm/mach-iop13xx/include/mach/adma.h

   1 /*
   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
  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;
  47                 };
  48         };
  49 };
  50
  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;
  70 };
  71
  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;
  79 };
  80
  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;
  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
 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;
 124 };
 125
 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;
 143         };
 144         u32 q_dest_addr;
 145         u32 q_upper_dest_addr;
 146 };
 147
 148 static inline int iop_adma_get_max_xor(void)
 149 {
 150         return 16;
 151 }
 152
 153 #define iop_adma_get_max_pq iop_adma_get_max_xor
 154
 155 static inline u32 iop_chan_get_current_descriptor(struct iop_adma_chan *chan)
 156 {
 157         return __raw_readl(ADMA_ADAR(chan));
 158 }
 159
 160 static 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
 168 static 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
 177 static inline int
 178 iop_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
 184 static inline int
 185 iop_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
 193 static inline int
 194 iop_chan_memset_slot_count(size_t len, int *slots_per_op)
 195 {
 196         *slots_per_op = 1;
 197         return 1;
 198 }
 199
 200 static inline int
 201 iop_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
 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
 220
 221 static 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
 228 static 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
 235 static 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
 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)
 245 {
 246         struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
 247         return hw_desc->src[src_idx].src_addr;
 248 }
 249
 250 static 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
 257 static inline void
 258 iop_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
 273 static inline void
 274 iop_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 */
 291 static inline void
 292 iop_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 */
 312 static inline int
 313 iop_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
 334 static inline void
 335 iop_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
 353 static 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
 365 static inline void
 366 iop_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
 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)
 389 {
 390         struct iop13xx_adma_desc_hw *hw_desc = desc->hw_desc;
 391         hw_desc->byte_count = byte_count;
 392 }
 393
 394 static inline void
 395 iop_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
 418 #define iop_desc_set_pq_zero_sum_byte_count iop_desc_set_zero_sum_byte_count
 419
 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)
 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
 429 static inline void
 430 iop_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
 439 static 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
 447 static 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
 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)
 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
 489 static inline void
 490 iop_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
 500 #define iop_desc_set_pq_zero_sum_src_addr iop_desc_set_pq_src_addr
 501
 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)
 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 }
 509
 510 static 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;
 514
 515         iop_paranoia(hw_desc->next_desc);
 516         hw_desc->next_desc = next_desc_addr;
 517 }
 518
 519 static 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
 525 static 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
 531 static 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
 538 static inline enum sum_check_flags
 539 iop_desc_get_zero_result(struct iop_adma_desc_slot *desc)
 540 {
 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;
 545
 546         BUG_ON(!(byte_count.tx_complete && desc_ctrl.zero_result));
 547
 548         flags = byte_count.zero_result_err_q << SUM_CHECK_Q;
 549         flags |= byte_count.zero_result_err << SUM_CHECK_P;
 550
 551         return flags;
 552 }
 553
 554 static 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
 563 static inline u32 iop_chan_get_status(struct iop_adma_chan *chan)
 564 {
 565         return __raw_readl(ADMA_ACSR(chan));
 566 }
 567
 568 static 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
 575 static 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
 584 static 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
 591 static 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
 598 static 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
 605 static inline int
 606 iop_is_err_int_parity(unsigned long status, struct iop_adma_chan *chan)
 607 {
 608         return test_bit(9, &status);
 609 }
 610
 611 static inline int
 612 iop_is_err_mcu_abort(unsigned long status, struct iop_adma_chan *chan)
 613 {
 614         return test_bit(5, &status);
 615 }
 616
 617 static inline int
 618 iop_is_err_int_tabort(unsigned long status, struct iop_adma_chan *chan)
 619 {
 620         return test_bit(4, &status);
 621 }
 622
 623 static inline int
 624 iop_is_err_int_mabort(unsigned long status, struct iop_adma_chan *chan)
 625 {
 626         return test_bit(3, &status);
 627 }
 628
 629 static inline int
 630 iop_is_err_pci_tabort(unsigned long status, struct iop_adma_chan *chan)
 631 {
 632         return 0;
 633 }
 634
 635 static inline int
 636 iop_is_err_pci_mabort(unsigned long status, struct iop_adma_chan *chan)
 637 {
 638         return 0;
 639 }
 640
 641 static inline int
 642 iop_is_err_split_tx(unsigned long status, struct iop_adma_chan *chan)
 643 {
 644         return 0;
 645 }
 646
 647 #endif /* _ADMA_H */