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