diff options
Diffstat (limited to 'arch/arm/mach-msm/include/mach/dma.h')
| -rw-r--r-- | arch/arm/mach-msm/include/mach/dma.h | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/arch/arm/mach-msm/include/mach/dma.h b/arch/arm/mach-msm/include/mach/dma.h new file mode 100644 index 00000000..05583f56 --- /dev/null +++ b/arch/arm/mach-msm/include/mach/dma.h @@ -0,0 +1,177 @@ +/* linux/include/asm-arm/arch-msm/dma.h + * + * Copyright (C) 2007 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __ASM_ARCH_MSM_DMA_H + +#include <linux/list.h> +#include <mach/msm_iomap.h> + +struct msm_dmov_errdata { + uint32_t flush[6]; +}; + +struct msm_dmov_cmd { + struct list_head list; + unsigned int cmdptr; + void (*complete_func)(struct msm_dmov_cmd *cmd, + unsigned int result, + struct msm_dmov_errdata *err); + void (*execute_func)(struct msm_dmov_cmd *cmd); + void *data; +}; + +#ifndef CONFIG_ARCH_MSM8X60 +void msm_dmov_enqueue_cmd(unsigned id, struct msm_dmov_cmd *cmd); +void msm_dmov_stop_cmd(unsigned id, struct msm_dmov_cmd *cmd, int graceful); +int msm_dmov_exec_cmd(unsigned id, unsigned int cmdptr); +#else +static inline +void msm_dmov_enqueue_cmd(unsigned id, struct msm_dmov_cmd *cmd) { } +static inline +void msm_dmov_stop_cmd(unsigned id, struct msm_dmov_cmd *cmd, int graceful) { } +static inline +int msm_dmov_exec_cmd(unsigned id, unsigned int cmdptr) { return -EIO; } +#endif + + +#define DMOV_SD0(off, ch) (MSM_DMOV_BASE + 0x0000 + (off) + ((ch) << 2)) +#define DMOV_SD1(off, ch) (MSM_DMOV_BASE + 0x0400 + (off) + ((ch) << 2)) +#define DMOV_SD2(off, ch) (MSM_DMOV_BASE + 0x0800 + (off) + ((ch) << 2)) +#define DMOV_SD3(off, ch) (MSM_DMOV_BASE + 0x0C00 + (off) + ((ch) << 2)) + +#if defined(CONFIG_ARCH_MSM7X30) +#define DMOV_SD_AARM DMOV_SD2 +#else +#define DMOV_SD_AARM DMOV_SD3 +#endif + +#define DMOV_CMD_PTR(ch) DMOV_SD_AARM(0x000, ch) +#define DMOV_CMD_LIST (0 << 29) /* does not work */ +#define DMOV_CMD_PTR_LIST (1 << 29) /* works */ +#define DMOV_CMD_INPUT_CFG (2 << 29) /* untested */ +#define DMOV_CMD_OUTPUT_CFG (3 << 29) /* untested */ +#define DMOV_CMD_ADDR(addr) ((addr) >> 3) + +#define DMOV_RSLT(ch) DMOV_SD_AARM(0x040, ch) +#define DMOV_RSLT_VALID (1 << 31) /* 0 == host has empties result fifo */ +#define DMOV_RSLT_ERROR (1 << 3) +#define DMOV_RSLT_FLUSH (1 << 2) +#define DMOV_RSLT_DONE (1 << 1) /* top pointer done */ +#define DMOV_RSLT_USER (1 << 0) /* command with FR force result */ + +#define DMOV_FLUSH0(ch) DMOV_SD_AARM(0x080, ch) +#define DMOV_FLUSH1(ch) DMOV_SD_AARM(0x0C0, ch) +#define DMOV_FLUSH2(ch) DMOV_SD_AARM(0x100, ch) +#define DMOV_FLUSH3(ch) DMOV_SD_AARM(0x140, ch) +#define DMOV_FLUSH4(ch) DMOV_SD_AARM(0x180, ch) +#define DMOV_FLUSH5(ch) DMOV_SD_AARM(0x1C0, ch) + +#define DMOV_STATUS(ch) DMOV_SD_AARM(0x200, ch) +#define DMOV_STATUS_RSLT_COUNT(n) (((n) >> 29)) +#define DMOV_STATUS_CMD_COUNT(n) (((n) >> 27) & 3) +#define DMOV_STATUS_RSLT_VALID (1 << 1) +#define DMOV_STATUS_CMD_PTR_RDY (1 << 0) + +#define DMOV_ISR DMOV_SD_AARM(0x380, 0) + +#define DMOV_CONFIG(ch) DMOV_SD_AARM(0x300, ch) +#define DMOV_CONFIG_FORCE_TOP_PTR_RSLT (1 << 2) +#define DMOV_CONFIG_FORCE_FLUSH_RSLT (1 << 1) +#define DMOV_CONFIG_IRQ_EN (1 << 0) + +/* channel assignments */ + +#define DMOV_NAND_CHAN 7 +#define DMOV_NAND_CRCI_CMD 5 +#define DMOV_NAND_CRCI_DATA 4 + +#define DMOV_SDC1_CHAN 8 +#define DMOV_SDC1_CRCI 6 + +#define DMOV_SDC2_CHAN 8 +#define DMOV_SDC2_CRCI 7 + +#define DMOV_TSIF_CHAN 10 +#define DMOV_TSIF_CRCI 10 + +#define DMOV_USB_CHAN 11 + +/* no client rate control ifc (eg, ram) */ +#define DMOV_NONE_CRCI 0 + + +/* If the CMD_PTR register has CMD_PTR_LIST selected, the data mover + * is going to walk a list of 32bit pointers as described below. Each + * pointer points to a *array* of dmov_s, etc structs. The last pointer + * in the list is marked with CMD_PTR_LP. The last struct in each array + * is marked with CMD_LC (see below). + */ +#define CMD_PTR_ADDR(addr) ((addr) >> 3) +#define CMD_PTR_LP (1 << 31) /* last pointer */ +#define CMD_PTR_PT (3 << 29) /* ? */ + +/* Single Item Mode */ +typedef struct { + unsigned cmd; + unsigned src; + unsigned dst; + unsigned len; +} dmov_s; + +/* Scatter/Gather Mode */ +typedef struct { + unsigned cmd; + unsigned src_dscr; + unsigned dst_dscr; + unsigned _reserved; +} dmov_sg; + +/* Box mode */ +typedef struct { + uint32_t cmd; + uint32_t src_row_addr; + uint32_t dst_row_addr; + uint32_t src_dst_len; + uint32_t num_rows; + uint32_t row_offset; +} dmov_box; + +/* bits for the cmd field of the above structures */ + +#define CMD_LC (1 << 31) /* last command */ +#define CMD_FR (1 << 22) /* force result -- does not work? */ +#define CMD_OCU (1 << 21) /* other channel unblock */ +#define CMD_OCB (1 << 20) /* other channel block */ +#define CMD_TCB (1 << 19) /* ? */ +#define CMD_DAH (1 << 18) /* destination address hold -- does not work?*/ +#define CMD_SAH (1 << 17) /* source address hold -- does not work? */ + +#define CMD_MODE_SINGLE (0 << 0) /* dmov_s structure used */ +#define CMD_MODE_SG (1 << 0) /* untested */ +#define CMD_MODE_IND_SG (2 << 0) /* untested */ +#define CMD_MODE_BOX (3 << 0) /* untested */ + +#define CMD_DST_SWAP_BYTES (1 << 14) /* exchange each byte n with byte n+1 */ +#define CMD_DST_SWAP_SHORTS (1 << 15) /* exchange each short n with short n+1 */ +#define CMD_DST_SWAP_WORDS (1 << 16) /* exchange each word n with word n+1 */ + +#define CMD_SRC_SWAP_BYTES (1 << 11) /* exchange each byte n with byte n+1 */ +#define CMD_SRC_SWAP_SHORTS (1 << 12) /* exchange each short n with short n+1 */ +#define CMD_SRC_SWAP_WORDS (1 << 13) /* exchange each word n with word n+1 */ + +#define CMD_DST_CRCI(n) (((n) & 15) << 7) +#define CMD_SRC_CRCI(n) (((n) & 15) << 3) + +#endif |