1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) ST-Ericsson SA 2007-2010 4 * Author: Per Friden <per.friden@stericsson.com> for ST-Ericsson SA 5 * Author: Jonas Aaberg <jonas.aberg@stericsson.com> for ST-Ericsson SA 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 0x3ff01 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 151 152 #define D40_DREG_SSEG1 0x030 153 #define D40_DREG_SSEG2 0x034 154 #define D40_DREG_SSEG3 0x038 155 #define D40_DREG_SSEG4 0x03C 156 157 #define D40_DREG_SCEG1 0x040 158 #define D40_DREG_SCEG2 0x044 159 #define D40_DREG_SCEG3 0x048 160 #define D40_DREG_SCEG4 0x04C 161 162 #define D40_DREG_ACTIVE 0x050 163 #define D40_DREG_ACTIVO 0x054 164 #define D40_DREG_CIDMOD 0x058 165 #define D40_DREG_TCIDV 0x05C 166 #define D40_DREG_PCMIS 0x060 167 #define D40_DREG_PCICR 0x064 168 #define D40_DREG_PCTIS 0x068 169 #define D40_DREG_PCEIS 0x06C 170 171 #define D40_DREG_SPCMIS 0x070 172 #define D40_DREG_SPCICR 0x074 173 #define D40_DREG_SPCTIS 0x078 174 #define D40_DREG_SPCEIS 0x07C 175 176 #define D40_DREG_LCMIS0 0x080 177 #define D40_DREG_LCMIS1 0x084 178 #define D40_DREG_LCMIS2 0x088 179 #define D40_DREG_LCMIS3 0x08C 180 #define D40_DREG_LCICR0 0x090 181 #define D40_DREG_LCICR1 0x094 182 #define D40_DREG_LCICR2 0x098 183 #define D40_DREG_LCICR3 0x09C 184 #define D40_DREG_LCTIS0 0x0A0 185 #define D40_DREG_LCTIS1 0x0A4 186 #define D40_DREG_LCTIS2 0x0A8 187 #define D40_DREG_LCTIS3 0x0AC 188 #define D40_DREG_LCEIS0 0x0B0 189 #define D40_DREG_LCEIS1 0x0B4 190 #define D40_DREG_LCEIS2 0x0B8 191 #define D40_DREG_LCEIS3 0x0BC 192 193 #define D40_DREG_SLCMIS1 0x0C0 194 #define D40_DREG_SLCMIS2 0x0C4 195 #define D40_DREG_SLCMIS3 0x0C8 196 #define D40_DREG_SLCMIS4 0x0CC 197 198 #define D40_DREG_SLCICR1 0x0D0 199 #define D40_DREG_SLCICR2 0x0D4 200 #define D40_DREG_SLCICR3 0x0D8 201 #define D40_DREG_SLCICR4 0x0DC 202 203 #define D40_DREG_SLCTIS1 0x0E0 204 #define D40_DREG_SLCTIS2 0x0E4 205 #define D40_DREG_SLCTIS3 0x0E8 206 #define D40_DREG_SLCTIS4 0x0EC 207 208 #define D40_DREG_SLCEIS1 0x0F0 209 #define D40_DREG_SLCEIS2 0x0F4 210 #define D40_DREG_SLCEIS3 0x0F8 211 #define D40_DREG_SLCEIS4 0x0FC 212 213 #define D40_DREG_FSESS1 0x100 214 #define D40_DREG_FSESS2 0x104 215 216 #define D40_DREG_FSEBS1 0x108 217 #define D40_DREG_FSEBS2 0x10C 218 219 #define D40_DREG_PSEG1 0x110 220 #define D40_DREG_PSEG2 0x114 221 #define D40_DREG_PSEG3 0x118 222 #define D40_DREG_PSEG4 0x11C 223 #define D40_DREG_PCEG1 0x120 224 #define D40_DREG_PCEG2 0x124 225 #define D40_DREG_PCEG3 0x128 226 #define D40_DREG_PCEG4 0x12C 227 #define D40_DREG_RSEG1 0x130 228 #define D40_DREG_RSEG2 0x134 229 #define D40_DREG_RSEG3 0x138 230 #define D40_DREG_RSEG4 0x13C 231 #define D40_DREG_RCEG1 0x140 232 #define D40_DREG_RCEG2 0x144 233 #define D40_DREG_RCEG3 0x148 234 #define D40_DREG_RCEG4 0x14C 235 236 #define D40_DREG_PREFOT 0x15C 237 #define D40_DREG_EXTCFG 0x160 238 239 #define D40_DREG_CPSEG1 0x200 240 #define D40_DREG_CPSEG2 0x204 241 #define D40_DREG_CPSEG3 0x208 242 #define D40_DREG_CPSEG4 0x20C 243 #define D40_DREG_CPSEG5 0x210 244 245 #define D40_DREG_CPCEG1 0x220 246 #define D40_DREG_CPCEG2 0x224 247 #define D40_DREG_CPCEG3 0x228 248 #define D40_DREG_CPCEG4 0x22C 249 #define D40_DREG_CPCEG5 0x230 250 251 #define D40_DREG_CRSEG1 0x240 252 #define D40_DREG_CRSEG2 0x244 253 #define D40_DREG_CRSEG3 0x248 254 #define D40_DREG_CRSEG4 0x24C 255 #define D40_DREG_CRSEG5 0x250 256 257 #define D40_DREG_CRCEG1 0x260 258 #define D40_DREG_CRCEG2 0x264 259 #define D40_DREG_CRCEG3 0x268 260 #define D40_DREG_CRCEG4 0x26C 261 #define D40_DREG_CRCEG5 0x270 262 263 #define D40_DREG_CFSESS1 0x280 264 #define D40_DREG_CFSESS2 0x284 265 #define D40_DREG_CFSESS3 0x288 266 267 #define D40_DREG_CFSEBS1 0x290 268 #define D40_DREG_CFSEBS2 0x294 269 #define D40_DREG_CFSEBS3 0x298 270 271 #define D40_DREG_CLCMIS1 0x300 272 #define D40_DREG_CLCMIS2 0x304 273 #define D40_DREG_CLCMIS3 0x308 274 #define D40_DREG_CLCMIS4 0x30C 275 #define D40_DREG_CLCMIS5 0x310 276 277 #define D40_DREG_CLCICR1 0x320 278 #define D40_DREG_CLCICR2 0x324 279 #define D40_DREG_CLCICR3 0x328 280 #define D40_DREG_CLCICR4 0x32C 281 #define D40_DREG_CLCICR5 0x330 282 283 #define D40_DREG_CLCTIS1 0x340 284 #define D40_DREG_CLCTIS2 0x344 285 #define D40_DREG_CLCTIS3 0x348 286 #define D40_DREG_CLCTIS4 0x34C 287 #define D40_DREG_CLCTIS5 0x350 288 289 #define D40_DREG_CLCEIS1 0x360 290 #define D40_DREG_CLCEIS2 0x364 291 #define D40_DREG_CLCEIS3 0x368 292 #define D40_DREG_CLCEIS4 0x36C 293 #define D40_DREG_CLCEIS5 0x370 294 295 #define D40_DREG_CPCMIS 0x380 296 #define D40_DREG_CPCICR 0x384 297 #define D40_DREG_CPCTIS 0x388 298 #define D40_DREG_CPCEIS 0x38C 299 300 #define D40_DREG_SCCIDA1 0xE80 301 #define D40_DREG_SCCIDA2 0xE90 302 #define D40_DREG_SCCIDA3 0xEA0 303 #define D40_DREG_SCCIDA4 0xEB0 304 #define D40_DREG_SCCIDA5 0xEC0 305 306 #define D40_DREG_SCCIDB1 0xE84 307 #define D40_DREG_SCCIDB2 0xE94 308 #define D40_DREG_SCCIDB3 0xEA4 309 #define D40_DREG_SCCIDB4 0xEB4 310 #define D40_DREG_SCCIDB5 0xEC4 311 312 #define D40_DREG_PRSCCIDA 0xF80 313 #define D40_DREG_PRSCCIDB 0xF84 314 315 #define D40_DREG_STFU 0xFC8 316 #define D40_DREG_ICFG 0xFCC 317 #define D40_DREG_PERIPHID0 0xFE0 318 #define D40_DREG_PERIPHID1 0xFE4 319 #define D40_DREG_PERIPHID2 0xFE8 320 #define D40_DREG_PERIPHID3 0xFEC 321 #define D40_DREG_CELLID0 0xFF0 322 #define D40_DREG_CELLID1 0xFF4 323 #define D40_DREG_CELLID2 0xFF8 324 #define D40_DREG_CELLID3 0xFFC 325 326 /* LLI related structures */ 327 328 /** 329 * struct d40_phy_lli - The basic configuration register for each physical 330 * channel. 331 * 332 * @reg_cfg: The configuration register. 333 * @reg_elt: The element register. 334 * @reg_ptr: The pointer register. 335 * @reg_lnk: The link register. 336 * 337 * These registers are set up for both physical and logical transfers 338 * Note that the bit in each register means differently in logical and 339 * physical(standard) mode. 340 * 341 * This struct must be 16 bytes aligned, and only contain physical registers 342 * since it will be directly accessed by the DMA. 343 */ 344 struct d40_phy_lli { 345 u32 reg_cfg; 346 u32 reg_elt; 347 u32 reg_ptr; 348 u32 reg_lnk; 349 }; 350 351 /** 352 * struct d40_phy_lli_bidir - struct for a transfer. 353 * 354 * @src: Register settings for src channel. 355 * @dst: Register settings for dst channel. 356 * 357 * All DMA transfers have a source and a destination. 358 */ 359 360 struct d40_phy_lli_bidir { 361 struct d40_phy_lli *src; 362 struct d40_phy_lli *dst; 363 }; 364 365 366 /** 367 * struct d40_log_lli - logical lli configuration 368 * 369 * @lcsp02: Either maps to register lcsp0 if src or lcsp2 if dst. 370 * @lcsp13: Either maps to register lcsp1 if src or lcsp3 if dst. 371 * 372 * This struct must be 8 bytes aligned since it will be accessed directly by 373 * the DMA. Never add any none hw mapped registers to this struct. 374 */ 375 376 struct d40_log_lli { 377 u32 lcsp02; 378 u32 lcsp13; 379 }; 380 381 /** 382 * struct d40_log_lli_bidir - For both src and dst 383 * 384 * @src: pointer to src lli configuration. 385 * @dst: pointer to dst lli configuration. 386 * 387 * You always have a src and a dst when doing DMA transfers. 388 */ 389 390 struct d40_log_lli_bidir { 391 struct d40_log_lli *src; 392 struct d40_log_lli *dst; 393 }; 394 395 /** 396 * struct d40_log_lli_full - LCPA layout 397 * 398 * @lcsp0: Logical Channel Standard Param 0 - Src. 399 * @lcsp1: Logical Channel Standard Param 1 - Src. 400 * @lcsp2: Logical Channel Standard Param 2 - Dst. 401 * @lcsp3: Logical Channel Standard Param 3 - Dst. 402 * 403 * This struct maps to LCPA physical memory layout. Must map to 404 * the hw. 405 */ 406 struct d40_log_lli_full { 407 u32 lcsp0; 408 u32 lcsp1; 409 u32 lcsp2; 410 u32 lcsp3; 411 }; 412 413 /** 414 * struct d40_def_lcsp - Default LCSP1 and LCSP3 settings 415 * 416 * @lcsp3: The default configuration for dst. 417 * @lcsp1: The default configuration for src. 418 */ 419 struct d40_def_lcsp { 420 u32 lcsp3; 421 u32 lcsp1; 422 }; 423 424 /* Physical channels */ 425 426 enum d40_lli_flags { 427 LLI_ADDR_INC = 1 << 0, 428 LLI_TERM_INT = 1 << 1, 429 LLI_CYCLIC = 1 << 2, 430 LLI_LAST_LINK = 1 << 3, 431 }; 432 433 void d40_phy_cfg(struct stedma40_chan_cfg *cfg, 434 u32 *src_cfg, 435 u32 *dst_cfg); 436 437 void d40_log_cfg(struct stedma40_chan_cfg *cfg, 438 u32 *lcsp1, 439 u32 *lcsp2); 440 441 int d40_phy_sg_to_lli(struct scatterlist *sg, 442 int sg_len, 443 dma_addr_t target, 444 struct d40_phy_lli *lli, 445 dma_addr_t lli_phys, 446 u32 reg_cfg, 447 struct stedma40_half_channel_info *info, 448 struct stedma40_half_channel_info *otherinfo, 449 unsigned long flags); 450 451 /* Logical channels */ 452 453 int d40_log_sg_to_lli(struct scatterlist *sg, 454 int sg_len, 455 dma_addr_t dev_addr, 456 struct d40_log_lli *lli_sg, 457 u32 lcsp13, /* src or dst*/ 458 u32 data_width1, u32 data_width2); 459 460 void d40_log_lli_lcpa_write(struct d40_log_lli_full *lcpa, 461 struct d40_log_lli *lli_dst, 462 struct d40_log_lli *lli_src, 463 int next, unsigned int flags); 464 465 void d40_log_lli_lcla_write(struct d40_log_lli *lcla, 466 struct d40_log_lli *lli_dst, 467 struct d40_log_lli *lli_src, 468 int next, unsigned int flags); 469 470 #endif /* STE_DMA40_LLI_H */ 471