/* 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> 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_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_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_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_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