arch/arm/mach-msm/include/mach/dma.h

   1 /* linux/include/asm-arm/arch-msm/dma.h
   2  *
   3  * Copyright (C) 2007 Google, Inc.
   4  *
   5  * This software is licensed under the terms of the GNU General Public
   6  * License version 2, as published by the Free Software Foundation, and
   7  * may be copied, distributed, and modified under those terms.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  */
  15
  16 #ifndef __ASM_ARCH_MSM_DMA_H
  17
  18 #include <linux/list.h>
  19 #include <mach/msm_iomap.h>
  20
  21 struct msm_dmov_errdata {
  22         uint32_t flush[6];
  23 };
  24
  25 struct msm_dmov_cmd {
  26         struct list_head list;
  27         unsigned int cmdptr;
  28         void (*complete_func)(struct msm_dmov_cmd *cmd,
  29                               unsigned int result,
  30                               struct msm_dmov_errdata *err);
  31         void (*execute_func)(struct msm_dmov_cmd *cmd);
  32         void *data;
  33 };
  34
  35 #ifndef CONFIG_ARCH_MSM8X60
  36 void msm_dmov_enqueue_cmd(unsigned id, struct msm_dmov_cmd *cmd);
  37 void msm_dmov_stop_cmd(unsigned id, struct msm_dmov_cmd *cmd, int graceful);
  38 int msm_dmov_exec_cmd(unsigned id, unsigned int cmdptr);
  39 #else
  40 static inline
  41 void msm_dmov_enqueue_cmd(unsigned id, struct msm_dmov_cmd *cmd) { }
  42 static inline
  43 void msm_dmov_stop_cmd(unsigned id, struct msm_dmov_cmd *cmd, int graceful) { }
  44 static inline
  45 int msm_dmov_exec_cmd(unsigned id, unsigned int cmdptr) { return -EIO; }
  46 #endif
  47
  48
  49 #define DMOV_SD0(off, ch) (MSM_DMOV_BASE + 0x0000 + (off) + ((ch) << 2))
  50 #define DMOV_SD1(off, ch) (MSM_DMOV_BASE + 0x0400 + (off) + ((ch) << 2))
  51 #define DMOV_SD2(off, ch) (MSM_DMOV_BASE + 0x0800 + (off) + ((ch) << 2))
  52 #define DMOV_SD3(off, ch) (MSM_DMOV_BASE + 0x0C00 + (off) + ((ch) << 2))
  53
  54 #if defined(CONFIG_ARCH_MSM7X30)
  55 #define DMOV_SD_AARM DMOV_SD2
  56 #else
  57 #define DMOV_SD_AARM DMOV_SD3
  58 #endif
  59
  60 #define DMOV_CMD_PTR(ch)      DMOV_SD_AARM(0x000, ch)
  61 #define DMOV_CMD_LIST         (0 << 29) /* does not work */
  62 #define DMOV_CMD_PTR_LIST     (1 << 29) /* works */
  63 #define DMOV_CMD_INPUT_CFG    (2 << 29) /* untested */
  64 #define DMOV_CMD_OUTPUT_CFG   (3 << 29) /* untested */
  65 #define DMOV_CMD_ADDR(addr)   ((addr) >> 3)
  66
  67 #define DMOV_RSLT(ch)         DMOV_SD_AARM(0x040, ch)
  68 #define DMOV_RSLT_VALID       (1 << 31) /* 0 == host has empties result fifo */
  69 #define DMOV_RSLT_ERROR       (1 << 3)
  70 #define DMOV_RSLT_FLUSH       (1 << 2)
  71 #define DMOV_RSLT_DONE        (1 << 1)  /* top pointer done */
  72 #define DMOV_RSLT_USER        (1 << 0)  /* command with FR force result */
  73
  74 #define DMOV_FLUSH0(ch)       DMOV_SD_AARM(0x080, ch)
  75 #define DMOV_FLUSH1(ch)       DMOV_SD_AARM(0x0C0, ch)
  76 #define DMOV_FLUSH2(ch)       DMOV_SD_AARM(0x100, ch)
  77 #define DMOV_FLUSH3(ch)       DMOV_SD_AARM(0x140, ch)
  78 #define DMOV_FLUSH4(ch)       DMOV_SD_AARM(0x180, ch)
  79 #define DMOV_FLUSH5(ch)       DMOV_SD_AARM(0x1C0, ch)
  80
  81 #define DMOV_STATUS(ch)       DMOV_SD_AARM(0x200, ch)
  82 #define DMOV_STATUS_RSLT_COUNT(n)    (((n) >> 29))
  83 #define DMOV_STATUS_CMD_COUNT(n)     (((n) >> 27) & 3)
  84 #define DMOV_STATUS_RSLT_VALID       (1 << 1)
  85 #define DMOV_STATUS_CMD_PTR_RDY      (1 << 0)
  86
  87 #define DMOV_ISR              DMOV_SD_AARM(0x380, 0)
  88
  89 #define DMOV_CONFIG(ch)       DMOV_SD_AARM(0x300, ch)
  90 #define DMOV_CONFIG_FORCE_TOP_PTR_RSLT (1 << 2)
  91 #define DMOV_CONFIG_FORCE_FLUSH_RSLT   (1 << 1)
  92 #define DMOV_CONFIG_IRQ_EN             (1 << 0)
  93
  94 /* channel assignments */
  95
  96 #define DMOV_NAND_CHAN        7
  97 #define DMOV_NAND_CRCI_CMD    5
  98 #define DMOV_NAND_CRCI_DATA   4
  99
 100 #define DMOV_SDC1_CHAN        8
 101 #define DMOV_SDC1_CRCI        6
 102
 103 #define DMOV_SDC2_CHAN        8
 104 #define DMOV_SDC2_CRCI        7
 105
 106 #define DMOV_TSIF_CHAN        10
 107 #define DMOV_TSIF_CRCI        10
 108
 109 #define DMOV_USB_CHAN         11
 110
 111 /* no client rate control ifc (eg, ram) */
 112 #define DMOV_NONE_CRCI        0
 113
 114
 115 /* If the CMD_PTR register has CMD_PTR_LIST selected, the data mover
 116  * is going to walk a list of 32bit pointers as described below.  Each
 117  * pointer points to a *array* of dmov_s, etc structs.  The last pointer
 118  * in the list is marked with CMD_PTR_LP.  The last struct in each array
 119  * is marked with CMD_LC (see below).
 120  */
 121 #define CMD_PTR_ADDR(addr)  ((addr) >> 3)
 122 #define CMD_PTR_LP          (1 << 31) /* last pointer */
 123 #define CMD_PTR_PT          (3 << 29) /* ? */
 124
 125 /* Single Item Mode */
 126 typedef struct {
 127         unsigned cmd;
 128         unsigned src;
 129         unsigned dst;
 130         unsigned len;
 131 } dmov_s;
 132
 133 /* Scatter/Gather Mode */
 134 typedef struct {
 135         unsigned cmd;
 136         unsigned src_dscr;
 137         unsigned dst_dscr;
 138         unsigned _reserved;
 139 } dmov_sg;
 140
 141 /* Box mode */
 142 typedef struct {
 143         uint32_t cmd;
 144         uint32_t src_row_addr;
 145         uint32_t dst_row_addr;
 146         uint32_t src_dst_len;
 147         uint32_t num_rows;
 148         uint32_t row_offset;
 149 } dmov_box;
 150
 151 /* bits for the cmd field of the above structures */
 152
 153 #define CMD_LC      (1 << 31)  /* last command */
 154 #define CMD_FR      (1 << 22)  /* force result -- does not work? */
 155 #define CMD_OCU     (1 << 21)  /* other channel unblock */
 156 #define CMD_OCB     (1 << 20)  /* other channel block */
 157 #define CMD_TCB     (1 << 19)  /* ? */
 158 #define CMD_DAH     (1 << 18)  /* destination address hold -- does not work?*/
 159 #define CMD_SAH     (1 << 17)  /* source address hold -- does not work? */
 160
 161 #define CMD_MODE_SINGLE     (0 << 0) /* dmov_s structure used */
 162 #define CMD_MODE_SG         (1 << 0) /* untested */
 163 #define CMD_MODE_IND_SG     (2 << 0) /* untested */
 164 #define CMD_MODE_BOX        (3 << 0) /* untested */
 165
 166 #define CMD_DST_SWAP_BYTES  (1 << 14) /* exchange each byte n with byte n+1 */
 167 #define CMD_DST_SWAP_SHORTS (1 << 15) /* exchange each short n with short n+1 */
 168 #define CMD_DST_SWAP_WORDS  (1 << 16) /* exchange each word n with word n+1 */
 169
 170 #define CMD_SRC_SWAP_BYTES  (1 << 11) /* exchange each byte n with byte n+1 */
 171 #define CMD_SRC_SWAP_SHORTS (1 << 12) /* exchange each short n with short n+1 */
 172 #define CMD_SRC_SWAP_WORDS  (1 << 13) /* exchange each word n with word n+1 */
 173
 174 #define CMD_DST_CRCI(n)     (((n) & 15) << 7)
 175 #define CMD_SRC_CRCI(n)     (((n) & 15) << 3)
 176
 177 #endif