imx6_sdma.h revision 283500
1/*- 2 * Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: stable/10/sys/arm/freescale/imx/imx6_sdma.h 283500 2015-05-24 18:59:45Z ian $ 27 */ 28 29#define SDMAARM_MC0PTR 0x00 /* ARM platform Channel 0 Pointer */ 30#define SDMAARM_INTR 0x04 /* Channel Interrupts */ 31#define SDMAARM_STOP_STAT 0x08 /* Channel Stop/Channel Status */ 32#define SDMAARM_HSTART 0x0C /* Channel Start */ 33#define SDMAARM_EVTOVR 0x10 /* Channel Event Override */ 34#define SDMAARM_DSPOVR 0x14 /* Channel BP Override */ 35#define SDMAARM_HOSTOVR 0x18 /* Channel ARM platform Override */ 36#define SDMAARM_EVTPEND 0x1C /* Channel Event Pending */ 37#define SDMAARM_RESET 0x24 /* Reset Register */ 38#define SDMAARM_EVTERR 0x28 /* DMA Request Error Register */ 39#define SDMAARM_INTRMASK 0x2C /* Channel ARM platform Interrupt Mask */ 40#define SDMAARM_PSW 0x30 /* Schedule Status */ 41#define SDMAARM_EVTERRDBG 0x34 /* DMA Request Error Register */ 42#define SDMAARM_CONFIG 0x38 /* Configuration Register */ 43#define CONFIG_CSM 0x3 44#define SDMAARM_SDMA_LOCK 0x3C /* SDMA LOCK */ 45#define SDMAARM_ONCE_ENB 0x40 /* OnCE Enable */ 46#define SDMAARM_ONCE_DATA 0x44 /* OnCE Data Register */ 47#define SDMAARM_ONCE_INSTR 0x48 /* OnCE Instruction Register */ 48#define SDMAARM_ONCE_STAT 0x4C /* OnCE Status Register */ 49#define SDMAARM_ONCE_CMD 0x50 /* OnCE Command Register */ 50#define SDMAARM_ILLINSTADDR 0x58 /* Illegal Instruction Trap Address */ 51#define SDMAARM_CHN0ADDR 0x5C /* Channel 0 Boot Address */ 52#define SDMAARM_EVT_MIRROR 0x60 /* DMA Requests */ 53#define SDMAARM_EVT_MIRROR2 0x64 /* DMA Requests 2 */ 54#define SDMAARM_XTRIG_CONF1 0x70 /* Cross-Trigger Events Configuration Register 1 */ 55#define SDMAARM_XTRIG_CONF2 0x74 /* Cross-Trigger Events Configuration Register 2 */ 56#define SDMAARM_SDMA_CHNPRI(n) (0x100 + 0x4 * n) /* Channel Priority Registers */ 57#define SDMAARM_CHNENBL(n) (0x200 + 0x4 * n) /* Channel Enable RAM */ 58 59/* SDMA Event Mappings */ 60#define SSI1_RX_1 35 61#define SSI1_TX_1 36 62#define SSI1_RX_0 37 63#define SSI1_TX_0 38 64#define SSI2_RX_1 39 65#define SSI2_TX_1 40 66#define SSI2_RX_0 41 67#define SSI2_TX_0 42 68#define SSI3_RX_1 43 69#define SSI3_TX_1 44 70#define SSI3_RX_0 45 71#define SSI3_TX_0 46 72 73#define C0_ADDR 0x01 74#define C0_LOAD 0x02 75#define C0_DUMP 0x03 76#define C0_SETCTX 0x07 77#define C0_GETCTX 0x03 78#define C0_SETDM 0x01 79#define C0_SETPM 0x04 80#define C0_GETDM 0x02 81#define C0_GETPM 0x08 82 83#define BD_DONE 0x01 84#define BD_WRAP 0x02 85#define BD_CONT 0x04 86#define BD_INTR 0x08 87#define BD_RROR 0x10 88#define BD_LAST 0x20 89#define BD_EXTD 0x80 90 91/* sDMA data transfer length */ 92#define CMD_4BYTES 0 93#define CMD_3BYTES 3 94#define CMD_2BYTES 2 95#define CMD_1BYTES 1 96 97struct sdma_firmware_header { 98 uint32_t magic; 99 uint32_t version_major; 100 uint32_t version_minor; 101 uint32_t script_addrs_start; 102 uint32_t num_script_addrs; 103 uint32_t ram_code_start; 104 uint32_t ram_code_size; 105}; 106 107struct sdma_mode_count { 108 uint16_t count; 109 uint8_t status; 110 uint8_t command; 111}; 112 113struct sdma_buffer_descriptor { 114 struct sdma_mode_count mode; 115 uint32_t buffer_addr; 116 uint32_t ext_buffer_addr; 117} __packed; 118 119struct sdma_channel_control { 120 uint32_t current_bd_ptr; 121 uint32_t base_bd_ptr; 122 uint32_t unused[2]; 123} __packed; 124 125struct sdma_state_registers { 126 uint32_t pc :14; 127 uint32_t unused1: 1; 128 uint32_t t : 1; 129 uint32_t rpc :14; 130 uint32_t unused0: 1; 131 uint32_t sf : 1; 132 uint32_t spc :14; 133 uint32_t unused2: 1; 134 uint32_t df : 1; 135 uint32_t epc :14; 136 uint32_t lm : 2; 137} __packed; 138 139struct sdma_context_data { 140 struct sdma_state_registers channel_state; 141 uint32_t gReg[8]; 142 uint32_t mda; 143 uint32_t msa; 144 uint32_t ms; 145 uint32_t md; 146 uint32_t pda; 147 uint32_t psa; 148 uint32_t ps; 149 uint32_t pd; 150 uint32_t ca; 151 uint32_t cs; 152 uint32_t dda; 153 uint32_t dsa; 154 uint32_t ds; 155 uint32_t dd; 156 uint32_t unused[8]; 157} __packed; 158 159/* SDMA firmware script pointers */ 160struct sdma_script_start_addrs { 161 int32_t ap_2_ap_addr; 162 int32_t ap_2_bp_addr; 163 int32_t ap_2_ap_fixed_addr; 164 int32_t bp_2_ap_addr; 165 int32_t loopback_on_dsp_side_addr; 166 int32_t mcu_interrupt_only_addr; 167 int32_t firi_2_per_addr; 168 int32_t firi_2_mcu_addr; 169 int32_t per_2_firi_addr; 170 int32_t mcu_2_firi_addr; 171 int32_t uart_2_per_addr; 172 int32_t uart_2_mcu_addr; 173 int32_t per_2_app_addr; 174 int32_t mcu_2_app_addr; 175 int32_t per_2_per_addr; 176 int32_t uartsh_2_per_addr; 177 int32_t uartsh_2_mcu_addr; 178 int32_t per_2_shp_addr; 179 int32_t mcu_2_shp_addr; 180 int32_t ata_2_mcu_addr; 181 int32_t mcu_2_ata_addr; 182 int32_t app_2_per_addr; 183 int32_t app_2_mcu_addr; 184 int32_t shp_2_per_addr; 185 int32_t shp_2_mcu_addr; 186 int32_t mshc_2_mcu_addr; 187 int32_t mcu_2_mshc_addr; 188 int32_t spdif_2_mcu_addr; 189 int32_t mcu_2_spdif_addr; 190 int32_t asrc_2_mcu_addr; 191 int32_t ext_mem_2_ipu_addr; 192 int32_t descrambler_addr; 193 int32_t dptc_dvfs_addr; 194 int32_t utra_addr; 195 int32_t ram_code_start_addr; 196 int32_t mcu_2_ssish_addr; 197 int32_t ssish_2_mcu_addr; 198 int32_t hdmi_dma_addr; 199}; 200 201#define SDMA_N_CHANNELS 32 202#define SDMA_N_EVENTS 48 203#define FW_HEADER_MAGIC 0x414d4453 204 205struct sdma_channel { 206 struct sdma_conf *conf; 207 struct sdma_buffer_descriptor *bd; 208 uint8_t in_use; 209}; 210 211struct sdma_softc { 212 struct resource *res[2]; 213 bus_space_tag_t bst; 214 bus_space_handle_t bsh; 215 device_t dev; 216 void *ih; 217 struct sdma_channel_control *ccb; 218 struct sdma_buffer_descriptor *bd0; 219 struct sdma_context_data *context; 220 struct sdma_channel channel[SDMA_N_CHANNELS]; 221 uint32_t num_bd; 222 uint32_t ccb_phys; 223 uint32_t context_phys; 224 struct sdma_firmware_header *fw_header; 225 struct sdma_script_start_addrs *fw_scripts; 226}; 227 228struct sdma_conf { 229 bus_addr_t saddr; 230 bus_addr_t daddr; 231 uint32_t word_length; 232 uint32_t nbits; 233 uint32_t command; 234 uint32_t num_bd; 235 uint32_t event; 236 uint32_t period; 237 uint32_t (*ih)(void *, int); 238 void *ih_user; 239}; 240 241int sdma_configure(int, struct sdma_conf *); 242int sdma_start(int); 243int sdma_stop(int); 244int sdma_alloc(void); 245int sdma_free(int); 246