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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 | /* * caam descriptor construction helper functions * * Copyright 2008-2012 Freescale Semiconductor, Inc. */ #include "desc.h" #include "regs.h" #define IMMEDIATE (1 << 23) #define CAAM_CMD_SZ sizeof(u32) #define CAAM_PTR_SZ sizeof(dma_addr_t) #define CAAM_DESC_BYTES_MAX (CAAM_CMD_SZ * MAX_CAAM_DESCSIZE) #define DESC_JOB_IO_LEN (CAAM_CMD_SZ * 5 + CAAM_PTR_SZ * 3) #ifdef DEBUG #define PRINT_POS do { printk(KERN_DEBUG "%02d: %s\n", desc_len(desc),\ &__func__[sizeof("append")]); } while (0) #else #define PRINT_POS #endif #define SET_OK_NO_PROP_ERRORS (IMMEDIATE | LDST_CLASS_DECO | \ LDST_SRCDST_WORD_DECOCTRL | \ (LDOFF_CHG_SHARE_OK_NO_PROP << \ LDST_OFFSET_SHIFT)) #define DISABLE_AUTO_INFO_FIFO (IMMEDIATE | LDST_CLASS_DECO | \ LDST_SRCDST_WORD_DECOCTRL | \ (LDOFF_DISABLE_AUTO_NFIFO << LDST_OFFSET_SHIFT)) #define ENABLE_AUTO_INFO_FIFO (IMMEDIATE | LDST_CLASS_DECO | \ LDST_SRCDST_WORD_DECOCTRL | \ (LDOFF_ENABLE_AUTO_NFIFO << LDST_OFFSET_SHIFT)) extern bool caam_little_end; static inline int desc_len(u32 *desc) { return caam32_to_cpu(*desc) & HDR_DESCLEN_MASK; } static inline int desc_bytes(void *desc) { return desc_len(desc) * CAAM_CMD_SZ; } static inline u32 *desc_end(u32 *desc) { return desc + desc_len(desc); } static inline void *sh_desc_pdb(u32 *desc) { return desc + 1; } static inline void init_desc(u32 *desc, u32 options) { *desc = cpu_to_caam32((options | HDR_ONE) + 1); } static inline void init_sh_desc(u32 *desc, u32 options) { PRINT_POS; init_desc(desc, CMD_SHARED_DESC_HDR | options); } static inline void init_sh_desc_pdb(u32 *desc, u32 options, size_t pdb_bytes) { u32 pdb_len = (pdb_bytes + CAAM_CMD_SZ - 1) / CAAM_CMD_SZ; init_sh_desc(desc, (((pdb_len + 1) << HDR_START_IDX_SHIFT) + pdb_len) | options); } static inline void init_job_desc(u32 *desc, u32 options) { init_desc(desc, CMD_DESC_HDR | options); } static inline void init_job_desc_pdb(u32 *desc, u32 options, size_t pdb_bytes) { u32 pdb_len = (pdb_bytes + CAAM_CMD_SZ - 1) / CAAM_CMD_SZ; init_job_desc(desc, (((pdb_len + 1) << HDR_START_IDX_SHIFT)) | options); } static inline void append_ptr(u32 *desc, dma_addr_t ptr) { dma_addr_t *offset = (dma_addr_t *)desc_end(desc); *offset = cpu_to_caam_dma(ptr); (*desc) = cpu_to_caam32(caam32_to_cpu(*desc) + CAAM_PTR_SZ / CAAM_CMD_SZ); } static inline void init_job_desc_shared(u32 *desc, dma_addr_t ptr, int len, u32 options) { PRINT_POS; init_job_desc(desc, HDR_SHARED | options | (len << HDR_START_IDX_SHIFT)); append_ptr(desc, ptr); } static inline void append_data(u32 *desc, void *data, int len) { u32 *offset = desc_end(desc); if (len) /* avoid sparse warning: memcpy with byte count of 0 */ memcpy(offset, data, len); (*desc) = cpu_to_caam32(caam32_to_cpu(*desc) + (len + CAAM_CMD_SZ - 1) / CAAM_CMD_SZ); } static inline void append_cmd(u32 *desc, u32 command) { u32 *cmd = desc_end(desc); *cmd = cpu_to_caam32(command); (*desc) = cpu_to_caam32(caam32_to_cpu(*desc) + 1); } #define append_u32 append_cmd static inline void append_u64(u32 *desc, u64 data) { u32 *offset = desc_end(desc); /* Only 32-bit alignment is guaranteed in descriptor buffer */ if (caam_little_end) { *offset = cpu_to_caam32(lower_32_bits(data)); *(++offset) = cpu_to_caam32(upper_32_bits(data)); } else { *offset = cpu_to_caam32(upper_32_bits(data)); *(++offset) = cpu_to_caam32(lower_32_bits(data)); } (*desc) = cpu_to_caam32(caam32_to_cpu(*desc) + 2); } /* Write command without affecting header, and return pointer to next word */ static inline u32 *write_cmd(u32 *desc, u32 command) { *desc = cpu_to_caam32(command); return desc + 1; } static inline void append_cmd_ptr(u32 *desc, dma_addr_t ptr, int len, u32 command) { append_cmd(desc, command | len); append_ptr(desc, ptr); } /* Write length after pointer, rather than inside command */ static inline void append_cmd_ptr_extlen(u32 *desc, dma_addr_t ptr, unsigned int len, u32 command) { append_cmd(desc, command); if (!(command & (SQIN_RTO | SQIN_PRE))) append_ptr(desc, ptr); append_cmd(desc, len); } static inline void append_cmd_data(u32 *desc, void *data, int len, u32 command) { append_cmd(desc, command | IMMEDIATE | len); append_data(desc, data, len); } #define APPEND_CMD_RET(cmd, op) \ static inline u32 *append_##cmd(u32 *desc, u32 options) \ { \ u32 *cmd = desc_end(desc); \ PRINT_POS; \ append_cmd(desc, CMD_##op | options); \ return cmd; \ } APPEND_CMD_RET(jump, JUMP) APPEND_CMD_RET(move, MOVE) static inline void set_jump_tgt_here(u32 *desc, u32 *jump_cmd) { *jump_cmd = cpu_to_caam32(caam32_to_cpu(*jump_cmd) | (desc_len(desc) - (jump_cmd - desc))); } static inline void set_move_tgt_here(u32 *desc, u32 *move_cmd) { u32 val = caam32_to_cpu(*move_cmd); val &= ~MOVE_OFFSET_MASK; val |= (desc_len(desc) << (MOVE_OFFSET_SHIFT + 2)) & MOVE_OFFSET_MASK; *move_cmd = cpu_to_caam32(val); } #define APPEND_CMD(cmd, op) \ static inline void append_##cmd(u32 *desc, u32 options) \ { \ PRINT_POS; \ append_cmd(desc, CMD_##op | options); \ } APPEND_CMD(operation, OPERATION) #define APPEND_CMD_LEN(cmd, op) \ static inline void append_##cmd(u32 *desc, unsigned int len, u32 options) \ { \ PRINT_POS; \ append_cmd(desc, CMD_##op | len | options); \ } APPEND_CMD_LEN(seq_load, SEQ_LOAD) APPEND_CMD_LEN(seq_store, SEQ_STORE) APPEND_CMD_LEN(seq_fifo_load, SEQ_FIFO_LOAD) APPEND_CMD_LEN(seq_fifo_store, SEQ_FIFO_STORE) #define APPEND_CMD_PTR(cmd, op) \ static inline void append_##cmd(u32 *desc, dma_addr_t ptr, unsigned int len, \ u32 options) \ { \ PRINT_POS; \ append_cmd_ptr(desc, ptr, len, CMD_##op | options); \ } APPEND_CMD_PTR(key, KEY) APPEND_CMD_PTR(load, LOAD) APPEND_CMD_PTR(fifo_load, FIFO_LOAD) APPEND_CMD_PTR(fifo_store, FIFO_STORE) static inline void append_store(u32 *desc, dma_addr_t ptr, unsigned int len, u32 options) { u32 cmd_src; cmd_src = options & LDST_SRCDST_MASK; append_cmd(desc, CMD_STORE | options | len); /* The following options do not require pointer */ if (!(cmd_src == LDST_SRCDST_WORD_DESCBUF_SHARED || cmd_src == LDST_SRCDST_WORD_DESCBUF_JOB || cmd_src == LDST_SRCDST_WORD_DESCBUF_JOB_WE || cmd_src == LDST_SRCDST_WORD_DESCBUF_SHARED_WE)) append_ptr(desc, ptr); } #define APPEND_SEQ_PTR_INTLEN(cmd, op) \ static inline void append_seq_##cmd##_ptr_intlen(u32 *desc, dma_addr_t ptr, \ unsigned int len, \ u32 options) \ { \ PRINT_POS; \ if (options & (SQIN_RTO | SQIN_PRE)) \ append_cmd(desc, CMD_SEQ_##op##_PTR | len | options); \ else \ append_cmd_ptr(desc, ptr, len, CMD_SEQ_##op##_PTR | options); \ } APPEND_SEQ_PTR_INTLEN(in, IN) APPEND_SEQ_PTR_INTLEN(out, OUT) #define APPEND_CMD_PTR_TO_IMM(cmd, op) \ static inline void append_##cmd##_as_imm(u32 *desc, void *data, \ unsigned int len, u32 options) \ { \ PRINT_POS; \ append_cmd_data(desc, data, len, CMD_##op | options); \ } APPEND_CMD_PTR_TO_IMM(load, LOAD); APPEND_CMD_PTR_TO_IMM(fifo_load, FIFO_LOAD); #define APPEND_CMD_PTR_EXTLEN(cmd, op) \ static inline void append_##cmd##_extlen(u32 *desc, dma_addr_t ptr, \ unsigned int len, u32 options) \ { \ PRINT_POS; \ append_cmd_ptr_extlen(desc, ptr, len, CMD_##op | SQIN_EXT | options); \ } APPEND_CMD_PTR_EXTLEN(seq_in_ptr, SEQ_IN_PTR) APPEND_CMD_PTR_EXTLEN(seq_out_ptr, SEQ_OUT_PTR) /* * Determine whether to store length internally or externally depending on * the size of its type */ #define APPEND_CMD_PTR_LEN(cmd, op, type) \ static inline void append_##cmd(u32 *desc, dma_addr_t ptr, \ type len, u32 options) \ { \ PRINT_POS; \ if (sizeof(type) > sizeof(u16)) \ append_##cmd##_extlen(desc, ptr, len, options); \ else \ append_##cmd##_intlen(desc, ptr, len, options); \ } APPEND_CMD_PTR_LEN(seq_in_ptr, SEQ_IN_PTR, u32) APPEND_CMD_PTR_LEN(seq_out_ptr, SEQ_OUT_PTR, u32) /* * 2nd variant for commands whose specified immediate length differs * from length of immediate data provided, e.g., split keys */ #define APPEND_CMD_PTR_TO_IMM2(cmd, op) \ static inline void append_##cmd##_as_imm(u32 *desc, void *data, \ unsigned int data_len, \ unsigned int len, u32 options) \ { \ PRINT_POS; \ append_cmd(desc, CMD_##op | IMMEDIATE | len | options); \ append_data(desc, data, data_len); \ } APPEND_CMD_PTR_TO_IMM2(key, KEY); #define APPEND_CMD_RAW_IMM(cmd, op, type) \ static inline void append_##cmd##_imm_##type(u32 *desc, type immediate, \ u32 options) \ { \ PRINT_POS; \ append_cmd(desc, CMD_##op | IMMEDIATE | options | sizeof(type)); \ append_cmd(desc, immediate); \ } APPEND_CMD_RAW_IMM(load, LOAD, u32); /* * ee - endianness * size - size of immediate type in bytes */ #define APPEND_CMD_RAW_IMM2(cmd, op, ee, size) \ static inline void append_##cmd##_imm_##ee##size(u32 *desc, \ u##size immediate, \ u32 options) \ { \ __##ee##size data = cpu_to_##ee##size(immediate); \ PRINT_POS; \ append_cmd(desc, CMD_##op | IMMEDIATE | options | sizeof(data)); \ append_data(desc, &data, sizeof(data)); \ } APPEND_CMD_RAW_IMM2(load, LOAD, be, 32); /* * Append math command. Only the last part of destination and source need to * be specified */ #define APPEND_MATH(op, desc, dest, src_0, src_1, len) \ append_cmd(desc, CMD_MATH | MATH_FUN_##op | MATH_DEST_##dest | \ MATH_SRC0_##src_0 | MATH_SRC1_##src_1 | (u32)len); #define append_math_add(desc, dest, src0, src1, len) \ APPEND_MATH(ADD, desc, dest, src0, src1, len) #define append_math_sub(desc, dest, src0, src1, len) \ APPEND_MATH(SUB, desc, dest, src0, src1, len) #define append_math_add_c(desc, dest, src0, src1, len) \ APPEND_MATH(ADDC, desc, dest, src0, src1, len) #define append_math_sub_b(desc, dest, src0, src1, len) \ APPEND_MATH(SUBB, desc, dest, src0, src1, len) #define append_math_and(desc, dest, src0, src1, len) \ APPEND_MATH(AND, desc, dest, src0, src1, len) #define append_math_or(desc, dest, src0, src1, len) \ APPEND_MATH(OR, desc, dest, src0, src1, len) #define append_math_xor(desc, dest, src0, src1, len) \ APPEND_MATH(XOR, desc, dest, src0, src1, len) #define append_math_lshift(desc, dest, src0, src1, len) \ APPEND_MATH(LSHIFT, desc, dest, src0, src1, len) #define append_math_rshift(desc, dest, src0, src1, len) \ APPEND_MATH(RSHIFT, desc, dest, src0, src1, len) #define append_math_ldshift(desc, dest, src0, src1, len) \ APPEND_MATH(SHLD, desc, dest, src0, src1, len) /* Exactly one source is IMM. Data is passed in as u32 value */ #define APPEND_MATH_IMM_u32(op, desc, dest, src_0, src_1, data) \ do { \ APPEND_MATH(op, desc, dest, src_0, src_1, CAAM_CMD_SZ); \ append_cmd(desc, data); \ } while (0) #define append_math_add_imm_u32(desc, dest, src0, src1, data) \ APPEND_MATH_IMM_u32(ADD, desc, dest, src0, src1, data) #define append_math_sub_imm_u32(desc, dest, src0, src1, data) \ APPEND_MATH_IMM_u32(SUB, desc, dest, src0, src1, data) #define append_math_add_c_imm_u32(desc, dest, src0, src1, data) \ APPEND_MATH_IMM_u32(ADDC, desc, dest, src0, src1, data) #define append_math_sub_b_imm_u32(desc, dest, src0, src1, data) \ APPEND_MATH_IMM_u32(SUBB, desc, dest, src0, src1, data) #define append_math_and_imm_u32(desc, dest, src0, src1, data) \ APPEND_MATH_IMM_u32(AND, desc, dest, src0, src1, data) #define append_math_or_imm_u32(desc, dest, src0, src1, data) \ APPEND_MATH_IMM_u32(OR, desc, dest, src0, src1, data) #define append_math_xor_imm_u32(desc, dest, src0, src1, data) \ APPEND_MATH_IMM_u32(XOR, desc, dest, src0, src1, data) #define append_math_lshift_imm_u32(desc, dest, src0, src1, data) \ APPEND_MATH_IMM_u32(LSHIFT, desc, dest, src0, src1, data) #define append_math_rshift_imm_u32(desc, dest, src0, src1, data) \ APPEND_MATH_IMM_u32(RSHIFT, desc, dest, src0, src1, data) /* Exactly one source is IMM. Data is passed in as u64 value */ #define APPEND_MATH_IMM_u64(op, desc, dest, src_0, src_1, data) \ do { \ u32 upper = (data >> 16) >> 16; \ APPEND_MATH(op, desc, dest, src_0, src_1, CAAM_CMD_SZ * 2 | \ (upper ? 0 : MATH_IFB)); \ if (upper) \ append_u64(desc, data); \ else \ append_u32(desc, lower_32_bits(data)); \ } while (0) #define append_math_add_imm_u64(desc, dest, src0, src1, data) \ APPEND_MATH_IMM_u64(ADD, desc, dest, src0, src1, data) #define append_math_sub_imm_u64(desc, dest, src0, src1, data) \ APPEND_MATH_IMM_u64(SUB, desc, dest, src0, src1, data) #define append_math_add_c_imm_u64(desc, dest, src0, src1, data) \ APPEND_MATH_IMM_u64(ADDC, desc, dest, src0, src1, data) #define append_math_sub_b_imm_u64(desc, dest, src0, src1, data) \ APPEND_MATH_IMM_u64(SUBB, desc, dest, src0, src1, data) #define append_math_and_imm_u64(desc, dest, src0, src1, data) \ APPEND_MATH_IMM_u64(AND, desc, dest, src0, src1, data) #define append_math_or_imm_u64(desc, dest, src0, src1, data) \ APPEND_MATH_IMM_u64(OR, desc, dest, src0, src1, data) #define append_math_xor_imm_u64(desc, dest, src0, src1, data) \ APPEND_MATH_IMM_u64(XOR, desc, dest, src0, src1, data) #define append_math_lshift_imm_u64(desc, dest, src0, src1, data) \ APPEND_MATH_IMM_u64(LSHIFT, desc, dest, src0, src1, data) #define append_math_rshift_imm_u64(desc, dest, src0, src1, data) \ APPEND_MATH_IMM_u64(RSHIFT, desc, dest, src0, src1, data) |