1 /* 2 * Copyright (C) ST-Ericsson SA 2007-2010 3 * Author: Per Friden <per.friden@stericsson.com> for ST-Ericsson SA 4 * Author: Jonas Aaberg <jonas.aberg@stericsson.com> for ST-Ericsson SA 5 * License terms: GNU General Public License (GPL) version 2 6 */ 7 #ifndef STE_DMA40_LL_H 8 #define STE_DMA40_LL_H 9 10 #define D40_DREG_PCBASE 0x400 11 #define D40_DREG_PCDELTA (8 * 4) 12 #define D40_LLI_ALIGN 16 /* LLI alignment must be 16 bytes. */ 13 14 #define D40_LCPA_CHAN_SIZE 32 15 #define D40_LCPA_CHAN_DST_DELTA 16 16 17 #define D40_TYPE_TO_GROUP(type) (type / 16) 18 #define D40_TYPE_TO_EVENT(type) (type % 16) 19 #define D40_GROUP_SIZE 8 20 #define D40_PHYS_TO_GROUP(phys) ((phys & (D40_GROUP_SIZE - 1)) / 2) 21 22 /* Most bits of the CFG register are the same in log as in phy mode */ 23 #define D40_SREG_CFG_MST_POS 15 24 #define D40_SREG_CFG_TIM_POS 14 25 #define D40_SREG_CFG_EIM_POS 13 26 #define D40_SREG_CFG_LOG_INCR_POS 12 27 #define D40_SREG_CFG_PHY_PEN_POS 12 28 #define D40_SREG_CFG_PSIZE_POS 10 29 #define D40_SREG_CFG_ESIZE_POS 8 30 #define D40_SREG_CFG_PRI_POS 7 31 #define D40_SREG_CFG_LBE_POS 6 32 #define D40_SREG_CFG_LOG_GIM_POS 5 33 #define D40_SREG_CFG_LOG_MFU_POS 4 34 #define D40_SREG_CFG_PHY_TM_POS 4 35 #define D40_SREG_CFG_PHY_EVTL_POS 0 36 37 38 /* Standard channel parameters - basic mode (element register) */ 39 #define D40_SREG_ELEM_PHY_ECNT_POS 16 40 #define D40_SREG_ELEM_PHY_EIDX_POS 0 41 42 #define D40_SREG_ELEM_PHY_ECNT_MASK (0xFFFF << D40_SREG_ELEM_PHY_ECNT_POS) 43 44 /* Standard channel parameters - basic mode (Link register) */ 45 #define D40_SREG_LNK_PHY_TCP_POS 0 46 #define D40_SREG_LNK_PHY_LMP_POS 1 47 #define D40_SREG_LNK_PHY_PRE_POS 2 48 /* 49 * Source destination link address. Contains the 50 * 29-bit byte word aligned address of the reload area. 51 */ 52 #define D40_SREG_LNK_PHYS_LNK_MASK 0xFFFFFFF8UL 53 54 /* Standard basic channel logical mode */ 55 56 /* Element register */ 57 #define D40_SREG_ELEM_LOG_ECNT_POS 16 58 #define D40_SREG_ELEM_LOG_LIDX_POS 8 59 #define D40_SREG_ELEM_LOG_LOS_POS 1 60 #define D40_SREG_ELEM_LOG_TCP_POS 0 61 62 #define D40_SREG_ELEM_LOG_LIDX_MASK (0xFF << D40_SREG_ELEM_LOG_LIDX_POS) 63 64 /* Link register */ 65 #define D40_EVENTLINE_POS(i) (2 * i) 66 #define D40_EVENTLINE_MASK(i) (0x3 << D40_EVENTLINE_POS(i)) 67 68 /* Standard basic channel logical params in memory */ 69 70 /* LCSP0 */ 71 #define D40_MEM_LCSP0_ECNT_POS 16 72 #define D40_MEM_LCSP0_SPTR_POS 0 73 74 #define D40_MEM_LCSP0_ECNT_MASK (0xFFFF << D40_MEM_LCSP0_ECNT_POS) 75 #define D40_MEM_LCSP0_SPTR_MASK (0xFFFF << D40_MEM_LCSP0_SPTR_POS) 76 77 /* LCSP1 */ 78 #define D40_MEM_LCSP1_SPTR_POS 16 79 #define D40_MEM_LCSP1_SCFG_MST_POS 15 80 #define D40_MEM_LCSP1_SCFG_TIM_POS 14 81 #define D40_MEM_LCSP1_SCFG_EIM_POS 13 82 #define D40_MEM_LCSP1_SCFG_INCR_POS 12 83 #define D40_MEM_LCSP1_SCFG_PSIZE_POS 10 84 #define D40_MEM_LCSP1_SCFG_ESIZE_POS 8 85 #define D40_MEM_LCSP1_SLOS_POS 1 86 #define D40_MEM_LCSP1_STCP_POS 0 87 88 #define D40_MEM_LCSP1_SPTR_MASK (0xFFFF << D40_MEM_LCSP1_SPTR_POS) 89 #define D40_MEM_LCSP1_SCFG_TIM_MASK (0x1 << D40_MEM_LCSP1_SCFG_TIM_POS) 90 #define D40_MEM_LCSP1_SCFG_INCR_MASK (0x1 << D40_MEM_LCSP1_SCFG_INCR_POS) 91 #define D40_MEM_LCSP1_SCFG_PSIZE_MASK (0x3 << D40_MEM_LCSP1_SCFG_PSIZE_POS) 92 #define D40_MEM_LCSP1_SLOS_MASK (0x7F << D40_MEM_LCSP1_SLOS_POS) 93 #define D40_MEM_LCSP1_STCP_MASK (0x1 << D40_MEM_LCSP1_STCP_POS) 94 95 /* LCSP2 */ 96 #define D40_MEM_LCSP2_ECNT_POS 16 97 98 #define D40_MEM_LCSP2_ECNT_MASK (0xFFFF << D40_MEM_LCSP2_ECNT_POS) 99 100 /* LCSP3 */ 101 #define D40_MEM_LCSP3_DCFG_MST_POS 15 102 #define D40_MEM_LCSP3_DCFG_TIM_POS 14 103 #define D40_MEM_LCSP3_DCFG_EIM_POS 13 104 #define D40_MEM_LCSP3_DCFG_INCR_POS 12 105 #define D40_MEM_LCSP3_DCFG_PSIZE_POS 10 106 #define D40_MEM_LCSP3_DCFG_ESIZE_POS 8 107 #define D40_MEM_LCSP3_DLOS_POS 1 108 #define D40_MEM_LCSP3_DTCP_POS 0 109 110 #define D40_MEM_LCSP3_DLOS_MASK (0x7F << D40_MEM_LCSP3_DLOS_POS) 111 #define D40_MEM_LCSP3_DTCP_MASK (0x1 << D40_MEM_LCSP3_DTCP_POS) 112 113 114 /* Standard channel parameter register offsets */ 115 #define D40_CHAN_REG_SSCFG 0x00 116 #define D40_CHAN_REG_SSELT 0x04 117 #define D40_CHAN_REG_SSPTR 0x08 118 #define D40_CHAN_REG_SSLNK 0x0C 119 #define D40_CHAN_REG_SDCFG 0x10 120 #define D40_CHAN_REG_SDELT 0x14 121 #define D40_CHAN_REG_SDPTR 0x18 122 #define D40_CHAN_REG_SDLNK 0x1C 123 124 /* DMA Register Offsets */ 125 #define D40_DREG_GCC 0x000 126 #define D40_DREG_GCC_ENA 0x1 127 /* This assumes that there are only 4 event groups */ 128 #define D40_DREG_GCC_ENABLE_ALL 0xff01 129 #define D40_DREG_GCC_EVTGRP_POS 8 130 #define D40_DREG_GCC_SRC 0 131 #define D40_DREG_GCC_DST 1 132 #define D40_DREG_GCC_EVTGRP_ENA(x, y) \ 133 (1 << (D40_DREG_GCC_EVTGRP_POS + 2 * x + y)) 134 135 #define D40_DREG_PRTYP 0x004 136 #define D40_DREG_PRSME 0x008 137 #define D40_DREG_PRSMO 0x00C 138 #define D40_DREG_PRMSE 0x010 139 #define D40_DREG_PRMSO 0x014 140 #define D40_DREG_PRMOE 0x018 141 #define D40_DREG_PRMOO 0x01C 142 #define D40_DREG_PRMO_PCHAN_BASIC 0x1 143 #define D40_DREG_PRMO_PCHAN_MODULO 0x2 144 #define D40_DREG_PRMO_PCHAN_DOUBLE_DST 0x3 145 #define D40_DREG_PRMO_LCHAN_SRC_PHY_DST_LOG 0x1 146 #define D40_DREG_PRMO_LCHAN_SRC_LOG_DST_PHY 0x2 147 #define D40_DREG_PRMO_LCHAN_SRC_LOG_DST_LOG 0x3 148 149 #define D40_DREG_LCPA 0x020 150 #define D40_DREG_LCLA 0x024 151 #define D40_DREG_ACTIVE 0x050 152 #define D40_DREG_ACTIVO 0x054 153 #define D40_DREG_FSEB1 0x058 154 #define D40_DREG_FSEB2 0x05C 155 #define D40_DREG_PCMIS 0x060 156 #define D40_DREG_PCICR 0x064 157 #define D40_DREG_PCTIS 0x068 158 #define D40_DREG_PCEIS 0x06C 159 #define D40_DREG_LCMIS0 0x080 160 #define D40_DREG_LCMIS1 0x084 161 #define D40_DREG_LCMIS2 0x088 162 #define D40_DREG_LCMIS3 0x08C 163 #define D40_DREG_LCICR0 0x090 164 #define D40_DREG_LCICR1 0x094 165 #define D40_DREG_LCICR2 0x098 166 #define D40_DREG_LCICR3 0x09C 167 #define D40_DREG_LCTIS0 0x0A0 168 #define D40_DREG_LCTIS1 0x0A4 169 #define D40_DREG_LCTIS2 0x0A8 170 #define D40_DREG_LCTIS3 0x0AC 171 #define D40_DREG_LCEIS0 0x0B0 172 #define D40_DREG_LCEIS1 0x0B4 173 #define D40_DREG_LCEIS2 0x0B8 174 #define D40_DREG_LCEIS3 0x0BC 175 #define D40_DREG_PSEG1 0x110 176 #define D40_DREG_PSEG2 0x114 177 #define D40_DREG_PSEG3 0x118 178 #define D40_DREG_PSEG4 0x11C 179 #define D40_DREG_PCEG1 0x120 180 #define D40_DREG_PCEG2 0x124 181 #define D40_DREG_PCEG3 0x128 182 #define D40_DREG_PCEG4 0x12C 183 #define D40_DREG_RSEG1 0x130 184 #define D40_DREG_RSEG2 0x134 185 #define D40_DREG_RSEG3 0x138 186 #define D40_DREG_RSEG4 0x13C 187 #define D40_DREG_RCEG1 0x140 188 #define D40_DREG_RCEG2 0x144 189 #define D40_DREG_RCEG3 0x148 190 #define D40_DREG_RCEG4 0x14C 191 #define D40_DREG_STFU 0xFC8 192 #define D40_DREG_ICFG 0xFCC 193 #define D40_DREG_PERIPHID0 0xFE0 194 #define D40_DREG_PERIPHID1 0xFE4 195 #define D40_DREG_PERIPHID2 0xFE8 196 #define D40_DREG_PERIPHID3 0xFEC 197 #define D40_DREG_CELLID0 0xFF0 198 #define D40_DREG_CELLID1 0xFF4 199 #define D40_DREG_CELLID2 0xFF8 200 #define D40_DREG_CELLID3 0xFFC 201 202 /* LLI related structures */ 203 204 /** 205 * struct d40_phy_lli - The basic configuration register for each physical 206 * channel. 207 * 208 * @reg_cfg: The configuration register. 209 * @reg_elt: The element register. 210 * @reg_ptr: The pointer register. 211 * @reg_lnk: The link register. 212 * 213 * These registers are set up for both physical and logical transfers 214 * Note that the bit in each register means differently in logical and 215 * physical(standard) mode. 216 * 217 * This struct must be 16 bytes aligned, and only contain physical registers 218 * since it will be directly accessed by the DMA. 219 */ 220 struct d40_phy_lli { 221 u32 reg_cfg; 222 u32 reg_elt; 223 u32 reg_ptr; 224 u32 reg_lnk; 225 }; 226 227 /** 228 * struct d40_phy_lli_bidir - struct for a transfer. 229 * 230 * @src: Register settings for src channel. 231 * @dst: Register settings for dst channel. 232 * 233 * All DMA transfers have a source and a destination. 234 */ 235 236 struct d40_phy_lli_bidir { 237 struct d40_phy_lli *src; 238 struct d40_phy_lli *dst; 239 }; 240 241 242 /** 243 * struct d40_log_lli - logical lli configuration 244 * 245 * @lcsp02: Either maps to register lcsp0 if src or lcsp2 if dst. 246 * @lcsp13: Either maps to register lcsp1 if src or lcsp3 if dst. 247 * 248 * This struct must be 8 bytes aligned since it will be accessed directy by 249 * the DMA. Never add any none hw mapped registers to this struct. 250 */ 251 252 struct d40_log_lli { 253 u32 lcsp02; 254 u32 lcsp13; 255 }; 256 257 /** 258 * struct d40_log_lli_bidir - For both src and dst 259 * 260 * @src: pointer to src lli configuration. 261 * @dst: pointer to dst lli configuration. 262 * 263 * You always have a src and a dst when doing DMA transfers. 264 */ 265 266 struct d40_log_lli_bidir { 267 struct d40_log_lli *src; 268 struct d40_log_lli *dst; 269 }; 270 271 /** 272 * struct d40_log_lli_full - LCPA layout 273 * 274 * @lcsp0: Logical Channel Standard Param 0 - Src. 275 * @lcsp1: Logical Channel Standard Param 1 - Src. 276 * @lcsp2: Logical Channel Standard Param 2 - Dst. 277 * @lcsp3: Logical Channel Standard Param 3 - Dst. 278 * 279 * This struct maps to LCPA physical memory layout. Must map to 280 * the hw. 281 */ 282 struct d40_log_lli_full { 283 u32 lcsp0; 284 u32 lcsp1; 285 u32 lcsp2; 286 u32 lcsp3; 287 }; 288 289 /** 290 * struct d40_def_lcsp - Default LCSP1 and LCSP3 settings 291 * 292 * @lcsp3: The default configuration for dst. 293 * @lcsp1: The default configuration for src. 294 */ 295 struct d40_def_lcsp { 296 u32 lcsp3; 297 u32 lcsp1; 298 }; 299 300 /* Physical channels */ 301 302 enum d40_lli_flags { 303 LLI_ADDR_INC = 1 << 0, 304 LLI_TERM_INT = 1 << 1, 305 LLI_CYCLIC = 1 << 2, 306 LLI_LAST_LINK = 1 << 3, 307 }; 308 309 void d40_phy_cfg(struct stedma40_chan_cfg *cfg, 310 u32 *src_cfg, 311 u32 *dst_cfg, 312 bool is_log); 313 314 void d40_log_cfg(struct stedma40_chan_cfg *cfg, 315 u32 *lcsp1, 316 u32 *lcsp2); 317 318 int d40_phy_sg_to_lli(struct scatterlist *sg, 319 int sg_len, 320 dma_addr_t target, 321 struct d40_phy_lli *lli, 322 dma_addr_t lli_phys, 323 u32 reg_cfg, 324 struct stedma40_half_channel_info *info, 325 struct stedma40_half_channel_info *otherinfo, 326 unsigned long flags); 327 328 /* Logical channels */ 329 330 int d40_log_sg_to_lli(struct scatterlist *sg, 331 int sg_len, 332 dma_addr_t dev_addr, 333 struct d40_log_lli *lli_sg, 334 u32 lcsp13, /* src or dst*/ 335 u32 data_width1, u32 data_width2); 336 337 void d40_log_lli_lcpa_write(struct d40_log_lli_full *lcpa, 338 struct d40_log_lli *lli_dst, 339 struct d40_log_lli *lli_src, 340 int next, unsigned int flags); 341 342 void d40_log_lli_lcla_write(struct d40_log_lli *lcla, 343 struct d40_log_lli *lli_dst, 344 struct d40_log_lli *lli_src, 345 int next, unsigned int flags); 346 347 #endif /* STE_DMA40_LLI_H */ 348