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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * caam descriptor construction helper functions4 *5 * Copyright 2008-2012 Freescale Semiconductor, Inc.6 * Copyright 2019 NXP7 */8 9#ifndef DESC_CONSTR_H10#define DESC_CONSTR_H11 12#include "desc.h"13#include "regs.h"14 15#define IMMEDIATE (1 << 23)16#define CAAM_CMD_SZ sizeof(u32)17#define CAAM_PTR_SZ caam_ptr_sz18#define CAAM_PTR_SZ_MAX sizeof(dma_addr_t)19#define CAAM_PTR_SZ_MIN sizeof(u32)20#define CAAM_DESC_BYTES_MAX (CAAM_CMD_SZ * MAX_CAAM_DESCSIZE)21#define __DESC_JOB_IO_LEN(n) (CAAM_CMD_SZ * 5 + (n) * 3)22#define DESC_JOB_IO_LEN __DESC_JOB_IO_LEN(CAAM_PTR_SZ)23#define DESC_JOB_IO_LEN_MAX __DESC_JOB_IO_LEN(CAAM_PTR_SZ_MAX)24#define DESC_JOB_IO_LEN_MIN __DESC_JOB_IO_LEN(CAAM_PTR_SZ_MIN)25 26/*27 * The CAAM QI hardware constructs a job descriptor which points28 * to shared descriptor (as pointed by context_a of FQ to CAAM).29 * When the job descriptor is executed by deco, the whole job30 * descriptor together with shared descriptor gets loaded in31 * deco buffer which is 64 words long (each 32-bit).32 *33 * The job descriptor constructed by QI hardware has layout:34 *35 * HEADER (1 word)36 * Shdesc ptr (1 or 2 words)37 * SEQ_OUT_PTR (1 word)38 * Out ptr (1 or 2 words)39 * Out length (1 word)40 * SEQ_IN_PTR (1 word)41 * In ptr (1 or 2 words)42 * In length (1 word)43 *44 * The shdesc ptr is used to fetch shared descriptor contents45 * into deco buffer.46 *47 * Apart from shdesc contents, the total number of words that48 * get loaded in deco buffer are '8' or '11'. The remaining words49 * in deco buffer can be used for storing shared descriptor.50 */51#define MAX_SDLEN ((CAAM_DESC_BYTES_MAX - DESC_JOB_IO_LEN_MIN) / CAAM_CMD_SZ)52 53#ifdef DEBUG54#define PRINT_POS do { printk(KERN_DEBUG "%02d: %s\n", desc_len(desc),\55 &__func__[sizeof("append")]); } while (0)56#else57#define PRINT_POS58#endif59 60#define SET_OK_NO_PROP_ERRORS (IMMEDIATE | LDST_CLASS_DECO | \61 LDST_SRCDST_WORD_DECOCTRL | \62 (LDOFF_CHG_SHARE_OK_NO_PROP << \63 LDST_OFFSET_SHIFT))64#define DISABLE_AUTO_INFO_FIFO (IMMEDIATE | LDST_CLASS_DECO | \65 LDST_SRCDST_WORD_DECOCTRL | \66 (LDOFF_DISABLE_AUTO_NFIFO << LDST_OFFSET_SHIFT))67#define ENABLE_AUTO_INFO_FIFO (IMMEDIATE | LDST_CLASS_DECO | \68 LDST_SRCDST_WORD_DECOCTRL | \69 (LDOFF_ENABLE_AUTO_NFIFO << LDST_OFFSET_SHIFT))70 71extern bool caam_little_end;72extern size_t caam_ptr_sz;73 74/*75 * HW fetches 4 S/G table entries at a time, irrespective of how many entries76 * are in the table. It's SW's responsibility to make sure these accesses77 * do not have side effects.78 */79static inline int pad_sg_nents(int sg_nents)80{81 return ALIGN(sg_nents, 4);82}83 84static inline int desc_len(u32 * const desc)85{86 return caam32_to_cpu(*desc) & HDR_DESCLEN_MASK;87}88 89static inline int desc_bytes(void * const desc)90{91 return desc_len(desc) * CAAM_CMD_SZ;92}93 94static inline u32 *desc_end(u32 * const desc)95{96 return desc + desc_len(desc);97}98 99static inline void *sh_desc_pdb(u32 * const desc)100{101 return desc + 1;102}103 104static inline void init_desc(u32 * const desc, u32 options)105{106 *desc = cpu_to_caam32((options | HDR_ONE) + 1);107}108 109static inline void init_sh_desc(u32 * const desc, u32 options)110{111 PRINT_POS;112 init_desc(desc, CMD_SHARED_DESC_HDR | options);113}114 115static inline void init_sh_desc_pdb(u32 * const desc, u32 options,116 size_t pdb_bytes)117{118 u32 pdb_len = (pdb_bytes + CAAM_CMD_SZ - 1) / CAAM_CMD_SZ;119 120 init_sh_desc(desc, (((pdb_len + 1) << HDR_START_IDX_SHIFT) + pdb_len) |121 options);122}123 124static inline void init_job_desc(u32 * const desc, u32 options)125{126 init_desc(desc, CMD_DESC_HDR | options);127}128 129static inline void init_job_desc_pdb(u32 * const desc, u32 options,130 size_t pdb_bytes)131{132 u32 pdb_len = (pdb_bytes + CAAM_CMD_SZ - 1) / CAAM_CMD_SZ;133 134 init_job_desc(desc, (((pdb_len + 1) << HDR_START_IDX_SHIFT)) | options);135}136 137static inline void append_ptr(u32 * const desc, dma_addr_t ptr)138{139 if (caam_ptr_sz == sizeof(dma_addr_t)) {140 dma_addr_t *offset = (dma_addr_t *)desc_end(desc);141 142 *offset = cpu_to_caam_dma(ptr);143 } else {144 u32 *offset = (u32 *)desc_end(desc);145 146 *offset = cpu_to_caam_dma(ptr);147 }148 149 (*desc) = cpu_to_caam32(caam32_to_cpu(*desc) +150 CAAM_PTR_SZ / CAAM_CMD_SZ);151}152 153static inline void init_job_desc_shared(u32 * const desc, dma_addr_t ptr,154 int len, u32 options)155{156 PRINT_POS;157 init_job_desc(desc, HDR_SHARED | options |158 (len << HDR_START_IDX_SHIFT));159 append_ptr(desc, ptr);160}161 162static inline void append_data(u32 * const desc, const void *data, int len)163{164 u32 *offset = desc_end(desc);165 166 /* Avoid gcc warning: memcpy with data == NULL */167 if (!IS_ENABLED(CONFIG_CRYPTO_DEV_FSL_CAAM_DEBUG) || data)168 memcpy(offset, data, len);169 170 (*desc) = cpu_to_caam32(caam32_to_cpu(*desc) +171 (len + CAAM_CMD_SZ - 1) / CAAM_CMD_SZ);172}173 174static inline void append_cmd(u32 * const desc, u32 command)175{176 u32 *cmd = desc_end(desc);177 178 *cmd = cpu_to_caam32(command);179 180 (*desc) = cpu_to_caam32(caam32_to_cpu(*desc) + 1);181}182 183#define append_u32 append_cmd184 185static inline void append_u64(u32 * const desc, u64 data)186{187 u32 *offset = desc_end(desc);188 189 /* Only 32-bit alignment is guaranteed in descriptor buffer */190 if (caam_little_end) {191 *offset = cpu_to_caam32(lower_32_bits(data));192 *(++offset) = cpu_to_caam32(upper_32_bits(data));193 } else {194 *offset = cpu_to_caam32(upper_32_bits(data));195 *(++offset) = cpu_to_caam32(lower_32_bits(data));196 }197 198 (*desc) = cpu_to_caam32(caam32_to_cpu(*desc) + 2);199}200 201/* Write command without affecting header, and return pointer to next word */202static inline u32 *write_cmd(u32 * const desc, u32 command)203{204 *desc = cpu_to_caam32(command);205 206 return desc + 1;207}208 209static inline void append_cmd_ptr(u32 * const desc, dma_addr_t ptr, int len,210 u32 command)211{212 append_cmd(desc, command | len);213 append_ptr(desc, ptr);214}215 216/* Write length after pointer, rather than inside command */217static inline void append_cmd_ptr_extlen(u32 * const desc, dma_addr_t ptr,218 unsigned int len, u32 command)219{220 append_cmd(desc, command);221 if (!(command & (SQIN_RTO | SQIN_PRE)))222 append_ptr(desc, ptr);223 append_cmd(desc, len);224}225 226static inline void append_cmd_data(u32 * const desc, const void *data, int len,227 u32 command)228{229 append_cmd(desc, command | IMMEDIATE | len);230 append_data(desc, data, len);231}232 233#define APPEND_CMD_RET(cmd, op) \234static inline u32 *append_##cmd(u32 * const desc, u32 options) \235{ \236 u32 *cmd = desc_end(desc); \237 PRINT_POS; \238 append_cmd(desc, CMD_##op | options); \239 return cmd; \240}241APPEND_CMD_RET(jump, JUMP)242APPEND_CMD_RET(move, MOVE)243APPEND_CMD_RET(move_len, MOVE_LEN)244 245static inline void set_jump_tgt_here(u32 * const desc, u32 *jump_cmd)246{247 *jump_cmd = cpu_to_caam32(caam32_to_cpu(*jump_cmd) |248 (desc_len(desc) - (jump_cmd - desc)));249}250 251static inline void set_move_tgt_here(u32 * const desc, u32 *move_cmd)252{253 u32 val = caam32_to_cpu(*move_cmd);254 255 val &= ~MOVE_OFFSET_MASK;256 val |= (desc_len(desc) << (MOVE_OFFSET_SHIFT + 2)) & MOVE_OFFSET_MASK;257 *move_cmd = cpu_to_caam32(val);258}259 260#define APPEND_CMD(cmd, op) \261static inline void append_##cmd(u32 * const desc, u32 options) \262{ \263 PRINT_POS; \264 append_cmd(desc, CMD_##op | options); \265}266APPEND_CMD(operation, OPERATION)267 268#define APPEND_CMD_LEN(cmd, op) \269static inline void append_##cmd(u32 * const desc, unsigned int len, \270 u32 options) \271{ \272 PRINT_POS; \273 append_cmd(desc, CMD_##op | len | options); \274}275 276APPEND_CMD_LEN(seq_load, SEQ_LOAD)277APPEND_CMD_LEN(seq_store, SEQ_STORE)278APPEND_CMD_LEN(seq_fifo_load, SEQ_FIFO_LOAD)279APPEND_CMD_LEN(seq_fifo_store, SEQ_FIFO_STORE)280 281#define APPEND_CMD_PTR(cmd, op) \282static inline void append_##cmd(u32 * const desc, dma_addr_t ptr, \283 unsigned int len, u32 options) \284{ \285 PRINT_POS; \286 append_cmd_ptr(desc, ptr, len, CMD_##op | options); \287}288APPEND_CMD_PTR(key, KEY)289APPEND_CMD_PTR(load, LOAD)290APPEND_CMD_PTR(fifo_load, FIFO_LOAD)291APPEND_CMD_PTR(fifo_store, FIFO_STORE)292 293static inline void append_store(u32 * const desc, dma_addr_t ptr,294 unsigned int len, u32 options)295{296 u32 cmd_src;297 298 cmd_src = options & LDST_SRCDST_MASK;299 300 append_cmd(desc, CMD_STORE | options | len);301 302 /* The following options do not require pointer */303 if (!(cmd_src == LDST_SRCDST_WORD_DESCBUF_SHARED ||304 cmd_src == LDST_SRCDST_WORD_DESCBUF_JOB ||305 cmd_src == LDST_SRCDST_WORD_DESCBUF_JOB_WE ||306 cmd_src == LDST_SRCDST_WORD_DESCBUF_SHARED_WE))307 append_ptr(desc, ptr);308}309 310#define APPEND_SEQ_PTR_INTLEN(cmd, op) \311static inline void append_seq_##cmd##_ptr_intlen(u32 * const desc, \312 dma_addr_t ptr, \313 unsigned int len, \314 u32 options) \315{ \316 PRINT_POS; \317 if (options & (SQIN_RTO | SQIN_PRE)) \318 append_cmd(desc, CMD_SEQ_##op##_PTR | len | options); \319 else \320 append_cmd_ptr(desc, ptr, len, CMD_SEQ_##op##_PTR | options); \321}322APPEND_SEQ_PTR_INTLEN(in, IN)323APPEND_SEQ_PTR_INTLEN(out, OUT)324 325#define APPEND_CMD_PTR_TO_IMM(cmd, op) \326static inline void append_##cmd##_as_imm(u32 * const desc, const void *data, \327 unsigned int len, u32 options) \328{ \329 PRINT_POS; \330 append_cmd_data(desc, data, len, CMD_##op | options); \331}332APPEND_CMD_PTR_TO_IMM(load, LOAD);333APPEND_CMD_PTR_TO_IMM(fifo_load, FIFO_LOAD);334 335#define APPEND_CMD_PTR_EXTLEN(cmd, op) \336static inline void append_##cmd##_extlen(u32 * const desc, dma_addr_t ptr, \337 unsigned int len, u32 options) \338{ \339 PRINT_POS; \340 append_cmd_ptr_extlen(desc, ptr, len, CMD_##op | SQIN_EXT | options); \341}342APPEND_CMD_PTR_EXTLEN(seq_in_ptr, SEQ_IN_PTR)343APPEND_CMD_PTR_EXTLEN(seq_out_ptr, SEQ_OUT_PTR)344 345/*346 * Determine whether to store length internally or externally depending on347 * the size of its type348 */349#define APPEND_CMD_PTR_LEN(cmd, op, type) \350static inline void append_##cmd(u32 * const desc, dma_addr_t ptr, \351 type len, u32 options) \352{ \353 PRINT_POS; \354 if (sizeof(type) > sizeof(u16)) \355 append_##cmd##_extlen(desc, ptr, len, options); \356 else \357 append_##cmd##_intlen(desc, ptr, len, options); \358}359APPEND_CMD_PTR_LEN(seq_in_ptr, SEQ_IN_PTR, u32)360APPEND_CMD_PTR_LEN(seq_out_ptr, SEQ_OUT_PTR, u32)361 362/*363 * 2nd variant for commands whose specified immediate length differs364 * from length of immediate data provided, e.g., split keys365 */366#define APPEND_CMD_PTR_TO_IMM2(cmd, op) \367static inline void append_##cmd##_as_imm(u32 * const desc, const void *data, \368 unsigned int data_len, \369 unsigned int len, u32 options) \370{ \371 PRINT_POS; \372 append_cmd(desc, CMD_##op | IMMEDIATE | len | options); \373 append_data(desc, data, data_len); \374}375APPEND_CMD_PTR_TO_IMM2(key, KEY);376 377#define APPEND_CMD_RAW_IMM(cmd, op, type) \378static inline void append_##cmd##_imm_##type(u32 * const desc, type immediate, \379 u32 options) \380{ \381 PRINT_POS; \382 if (options & LDST_LEN_MASK) \383 append_cmd(desc, CMD_##op | IMMEDIATE | options); \384 else \385 append_cmd(desc, CMD_##op | IMMEDIATE | options | \386 sizeof(type)); \387 append_cmd(desc, immediate); \388}389APPEND_CMD_RAW_IMM(load, LOAD, u32);390 391/*392 * ee - endianness393 * size - size of immediate type in bytes394 */395#define APPEND_CMD_RAW_IMM2(cmd, op, ee, size) \396static inline void append_##cmd##_imm_##ee##size(u32 *desc, \397 u##size immediate, \398 u32 options) \399{ \400 __##ee##size data = cpu_to_##ee##size(immediate); \401 PRINT_POS; \402 append_cmd(desc, CMD_##op | IMMEDIATE | options | sizeof(data)); \403 append_data(desc, &data, sizeof(data)); \404}405 406APPEND_CMD_RAW_IMM2(load, LOAD, be, 32);407 408/*409 * Append math command. Only the last part of destination and source need to410 * be specified411 */412#define APPEND_MATH(op, desc, dest, src_0, src_1, len) \413append_cmd(desc, CMD_MATH | MATH_FUN_##op | MATH_DEST_##dest | \414 MATH_SRC0_##src_0 | MATH_SRC1_##src_1 | (u32)len);415 416#define append_math_add(desc, dest, src0, src1, len) \417 APPEND_MATH(ADD, desc, dest, src0, src1, len)418#define append_math_sub(desc, dest, src0, src1, len) \419 APPEND_MATH(SUB, desc, dest, src0, src1, len)420#define append_math_add_c(desc, dest, src0, src1, len) \421 APPEND_MATH(ADDC, desc, dest, src0, src1, len)422#define append_math_sub_b(desc, dest, src0, src1, len) \423 APPEND_MATH(SUBB, desc, dest, src0, src1, len)424#define append_math_and(desc, dest, src0, src1, len) \425 APPEND_MATH(AND, desc, dest, src0, src1, len)426#define append_math_or(desc, dest, src0, src1, len) \427 APPEND_MATH(OR, desc, dest, src0, src1, len)428#define append_math_xor(desc, dest, src0, src1, len) \429 APPEND_MATH(XOR, desc, dest, src0, src1, len)430#define append_math_lshift(desc, dest, src0, src1, len) \431 APPEND_MATH(LSHIFT, desc, dest, src0, src1, len)432#define append_math_rshift(desc, dest, src0, src1, len) \433 APPEND_MATH(RSHIFT, desc, dest, src0, src1, len)434#define append_math_ldshift(desc, dest, src0, src1, len) \435 APPEND_MATH(SHLD, desc, dest, src0, src1, len)436 437/* Exactly one source is IMM. Data is passed in as u32 value */438#define APPEND_MATH_IMM_u32(op, desc, dest, src_0, src_1, data) \439do { \440 APPEND_MATH(op, desc, dest, src_0, src_1, CAAM_CMD_SZ); \441 append_cmd(desc, data); \442} while (0)443 444#define append_math_add_imm_u32(desc, dest, src0, src1, data) \445 APPEND_MATH_IMM_u32(ADD, desc, dest, src0, src1, data)446#define append_math_sub_imm_u32(desc, dest, src0, src1, data) \447 APPEND_MATH_IMM_u32(SUB, desc, dest, src0, src1, data)448#define append_math_add_c_imm_u32(desc, dest, src0, src1, data) \449 APPEND_MATH_IMM_u32(ADDC, desc, dest, src0, src1, data)450#define append_math_sub_b_imm_u32(desc, dest, src0, src1, data) \451 APPEND_MATH_IMM_u32(SUBB, desc, dest, src0, src1, data)452#define append_math_and_imm_u32(desc, dest, src0, src1, data) \453 APPEND_MATH_IMM_u32(AND, desc, dest, src0, src1, data)454#define append_math_or_imm_u32(desc, dest, src0, src1, data) \455 APPEND_MATH_IMM_u32(OR, desc, dest, src0, src1, data)456#define append_math_xor_imm_u32(desc, dest, src0, src1, data) \457 APPEND_MATH_IMM_u32(XOR, desc, dest, src0, src1, data)458#define append_math_lshift_imm_u32(desc, dest, src0, src1, data) \459 APPEND_MATH_IMM_u32(LSHIFT, desc, dest, src0, src1, data)460#define append_math_rshift_imm_u32(desc, dest, src0, src1, data) \461 APPEND_MATH_IMM_u32(RSHIFT, desc, dest, src0, src1, data)462 463/* Exactly one source is IMM. Data is passed in as u64 value */464#define APPEND_MATH_IMM_u64(op, desc, dest, src_0, src_1, data) \465do { \466 u32 upper = (data >> 16) >> 16; \467 APPEND_MATH(op, desc, dest, src_0, src_1, CAAM_CMD_SZ * 2 | \468 (upper ? 0 : MATH_IFB)); \469 if (upper) \470 append_u64(desc, data); \471 else \472 append_u32(desc, lower_32_bits(data)); \473} while (0)474 475#define append_math_add_imm_u64(desc, dest, src0, src1, data) \476 APPEND_MATH_IMM_u64(ADD, desc, dest, src0, src1, data)477#define append_math_sub_imm_u64(desc, dest, src0, src1, data) \478 APPEND_MATH_IMM_u64(SUB, desc, dest, src0, src1, data)479#define append_math_add_c_imm_u64(desc, dest, src0, src1, data) \480 APPEND_MATH_IMM_u64(ADDC, desc, dest, src0, src1, data)481#define append_math_sub_b_imm_u64(desc, dest, src0, src1, data) \482 APPEND_MATH_IMM_u64(SUBB, desc, dest, src0, src1, data)483#define append_math_and_imm_u64(desc, dest, src0, src1, data) \484 APPEND_MATH_IMM_u64(AND, desc, dest, src0, src1, data)485#define append_math_or_imm_u64(desc, dest, src0, src1, data) \486 APPEND_MATH_IMM_u64(OR, desc, dest, src0, src1, data)487#define append_math_xor_imm_u64(desc, dest, src0, src1, data) \488 APPEND_MATH_IMM_u64(XOR, desc, dest, src0, src1, data)489#define append_math_lshift_imm_u64(desc, dest, src0, src1, data) \490 APPEND_MATH_IMM_u64(LSHIFT, desc, dest, src0, src1, data)491#define append_math_rshift_imm_u64(desc, dest, src0, src1, data) \492 APPEND_MATH_IMM_u64(RSHIFT, desc, dest, src0, src1, data)493 494/**495 * struct alginfo - Container for algorithm details496 * @algtype: algorithm selector; for valid values, see documentation of the497 * functions where it is used.498 * @keylen: length of the provided algorithm key, in bytes499 * @keylen_pad: padded length of the provided algorithm key, in bytes500 * @key_dma: dma (bus) address where algorithm key resides501 * @key_virt: virtual address where algorithm key resides502 * @key_inline: true - key can be inlined in the descriptor; false - key is503 * referenced by the descriptor504 */505struct alginfo {506 u32 algtype;507 unsigned int keylen;508 unsigned int keylen_pad;509 dma_addr_t key_dma;510 const void *key_virt;511 bool key_inline;512};513 514/**515 * desc_inline_query() - Provide indications on which data items can be inlined516 * and which shall be referenced in a shared descriptor.517 * @sd_base_len: Shared descriptor base length - bytes consumed by the commands,518 * excluding the data items to be inlined (or corresponding519 * pointer if an item is not inlined). Each cnstr_* function that520 * generates descriptors should have a define mentioning521 * corresponding length.522 * @jd_len: Maximum length of the job descriptor(s) that will be used523 * together with the shared descriptor.524 * @data_len: Array of lengths of the data items trying to be inlined525 * @inl_mask: 32bit mask with bit x = 1 if data item x can be inlined, 0526 * otherwise.527 * @count: Number of data items (size of @data_len array); must be <= 32528 *529 * Return: 0 if data can be inlined / referenced, negative value if not. If 0,530 * check @inl_mask for details.531 */532static inline int desc_inline_query(unsigned int sd_base_len,533 unsigned int jd_len, unsigned int *data_len,534 u32 *inl_mask, unsigned int count)535{536 int rem_bytes = (int)(CAAM_DESC_BYTES_MAX - sd_base_len - jd_len);537 unsigned int i;538 539 *inl_mask = 0;540 for (i = 0; (i < count) && (rem_bytes > 0); i++) {541 if (rem_bytes - (int)(data_len[i] +542 (count - i - 1) * CAAM_PTR_SZ) >= 0) {543 rem_bytes -= data_len[i];544 *inl_mask |= (1 << i);545 } else {546 rem_bytes -= CAAM_PTR_SZ;547 }548 }549 550 return (rem_bytes >= 0) ? 0 : -1;551}552 553/**554 * append_proto_dkp - Derived Key Protocol (DKP): key -> split key555 * @desc: pointer to buffer used for descriptor construction556 * @adata: pointer to authentication transform definitions.557 * keylen should be the length of initial key, while keylen_pad558 * the length of the derived (split) key.559 * Valid algorithm values - one of OP_ALG_ALGSEL_{MD5, SHA1, SHA224,560 * SHA256, SHA384, SHA512}.561 */562static inline void append_proto_dkp(u32 * const desc, struct alginfo *adata)563{564 u32 protid;565 566 /*567 * Quick & dirty translation from OP_ALG_ALGSEL_{MD5, SHA*}568 * to OP_PCLID_DKP_{MD5, SHA*}569 */570 protid = (adata->algtype & OP_ALG_ALGSEL_SUBMASK) |571 (0x20 << OP_ALG_ALGSEL_SHIFT);572 573 if (adata->key_inline) {574 int words;575 576 if (adata->keylen > adata->keylen_pad) {577 append_operation(desc, OP_TYPE_UNI_PROTOCOL | protid |578 OP_PCL_DKP_SRC_PTR |579 OP_PCL_DKP_DST_IMM | adata->keylen);580 append_ptr(desc, adata->key_dma);581 582 words = (ALIGN(adata->keylen_pad, CAAM_CMD_SZ) -583 CAAM_PTR_SZ) / CAAM_CMD_SZ;584 } else {585 append_operation(desc, OP_TYPE_UNI_PROTOCOL | protid |586 OP_PCL_DKP_SRC_IMM |587 OP_PCL_DKP_DST_IMM | adata->keylen);588 append_data(desc, adata->key_virt, adata->keylen);589 590 words = (ALIGN(adata->keylen_pad, CAAM_CMD_SZ) -591 ALIGN(adata->keylen, CAAM_CMD_SZ)) /592 CAAM_CMD_SZ;593 }594 595 /* Reserve space in descriptor buffer for the derived key */596 if (words)597 (*desc) = cpu_to_caam32(caam32_to_cpu(*desc) + words);598 } else {599 append_operation(desc, OP_TYPE_UNI_PROTOCOL | protid |600 OP_PCL_DKP_SRC_PTR | OP_PCL_DKP_DST_PTR |601 adata->keylen);602 append_ptr(desc, adata->key_dma);603 }604}605 606#endif /* DESC_CONSTR_H */607