1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * caam descriptor construction helper functions
4 *
5 * Copyright 2008-2012 Freescale Semiconductor, Inc.
6 */
7
8 #ifndef DESC_CONSTR_H
9 #define DESC_CONSTR_H
10
11 #include "desc.h"
12 #include "regs.h"
13
14 #define IMMEDIATE (1 << 23)
15 #define CAAM_CMD_SZ sizeof(u32)
16 #define CAAM_PTR_SZ sizeof(dma_addr_t)
17 #define CAAM_DESC_BYTES_MAX (CAAM_CMD_SZ * MAX_CAAM_DESCSIZE)
18 #define DESC_JOB_IO_LEN (CAAM_CMD_SZ * 5 + CAAM_PTR_SZ * 3)
19
20 #ifdef DEBUG
21 #define PRINT_POS do { printk(KERN_DEBUG "%02d: %s\n", desc_len(desc),\
22 &__func__[sizeof("append")]); } while (0)
23 #else
24 #define PRINT_POS
25 #endif
26
27 #define SET_OK_NO_PROP_ERRORS (IMMEDIATE | LDST_CLASS_DECO | \
28 LDST_SRCDST_WORD_DECOCTRL | \
29 (LDOFF_CHG_SHARE_OK_NO_PROP << \
30 LDST_OFFSET_SHIFT))
31 #define DISABLE_AUTO_INFO_FIFO (IMMEDIATE | LDST_CLASS_DECO | \
32 LDST_SRCDST_WORD_DECOCTRL | \
33 (LDOFF_DISABLE_AUTO_NFIFO << LDST_OFFSET_SHIFT))
34 #define ENABLE_AUTO_INFO_FIFO (IMMEDIATE | LDST_CLASS_DECO | \
35 LDST_SRCDST_WORD_DECOCTRL | \
36 (LDOFF_ENABLE_AUTO_NFIFO << LDST_OFFSET_SHIFT))
37
38 extern bool caam_little_end;
39
desc_len(u32 * const desc)40 static inline int desc_len(u32 * const desc)
41 {
42 return caam32_to_cpu(*desc) & HDR_DESCLEN_MASK;
43 }
44
desc_bytes(void * const desc)45 static inline int desc_bytes(void * const desc)
46 {
47 return desc_len(desc) * CAAM_CMD_SZ;
48 }
49
desc_end(u32 * const desc)50 static inline u32 *desc_end(u32 * const desc)
51 {
52 return desc + desc_len(desc);
53 }
54
sh_desc_pdb(u32 * const desc)55 static inline void *sh_desc_pdb(u32 * const desc)
56 {
57 return desc + 1;
58 }
59
init_desc(u32 * const desc,u32 options)60 static inline void init_desc(u32 * const desc, u32 options)
61 {
62 *desc = cpu_to_caam32((options | HDR_ONE) + 1);
63 }
64
init_sh_desc(u32 * const desc,u32 options)65 static inline void init_sh_desc(u32 * const desc, u32 options)
66 {
67 PRINT_POS;
68 init_desc(desc, CMD_SHARED_DESC_HDR | options);
69 }
70
init_sh_desc_pdb(u32 * const desc,u32 options,size_t pdb_bytes)71 static inline void init_sh_desc_pdb(u32 * const desc, u32 options,
72 size_t pdb_bytes)
73 {
74 u32 pdb_len = (pdb_bytes + CAAM_CMD_SZ - 1) / CAAM_CMD_SZ;
75
76 init_sh_desc(desc, (((pdb_len + 1) << HDR_START_IDX_SHIFT) + pdb_len) |
77 options);
78 }
79
init_job_desc(u32 * const desc,u32 options)80 static inline void init_job_desc(u32 * const desc, u32 options)
81 {
82 init_desc(desc, CMD_DESC_HDR | options);
83 }
84
init_job_desc_pdb(u32 * const desc,u32 options,size_t pdb_bytes)85 static inline void init_job_desc_pdb(u32 * const desc, u32 options,
86 size_t pdb_bytes)
87 {
88 u32 pdb_len = (pdb_bytes + CAAM_CMD_SZ - 1) / CAAM_CMD_SZ;
89
90 init_job_desc(desc, (((pdb_len + 1) << HDR_START_IDX_SHIFT)) | options);
91 }
92
append_ptr(u32 * const desc,dma_addr_t ptr)93 static inline void append_ptr(u32 * const desc, dma_addr_t ptr)
94 {
95 dma_addr_t *offset = (dma_addr_t *)desc_end(desc);
96
97 *offset = cpu_to_caam_dma(ptr);
98
99 (*desc) = cpu_to_caam32(caam32_to_cpu(*desc) +
100 CAAM_PTR_SZ / CAAM_CMD_SZ);
101 }
102
init_job_desc_shared(u32 * const desc,dma_addr_t ptr,int len,u32 options)103 static inline void init_job_desc_shared(u32 * const desc, dma_addr_t ptr,
104 int len, u32 options)
105 {
106 PRINT_POS;
107 init_job_desc(desc, HDR_SHARED | options |
108 (len << HDR_START_IDX_SHIFT));
109 append_ptr(desc, ptr);
110 }
111
append_data(u32 * const desc,const void * data,int len)112 static inline void append_data(u32 * const desc, const void *data, int len)
113 {
114 u32 *offset = desc_end(desc);
115
116 if (len) /* avoid sparse warning: memcpy with byte count of 0 */
117 memcpy(offset, data, len);
118
119 (*desc) = cpu_to_caam32(caam32_to_cpu(*desc) +
120 (len + CAAM_CMD_SZ - 1) / CAAM_CMD_SZ);
121 }
122
append_cmd(u32 * const desc,u32 command)123 static inline void append_cmd(u32 * const desc, u32 command)
124 {
125 u32 *cmd = desc_end(desc);
126
127 *cmd = cpu_to_caam32(command);
128
129 (*desc) = cpu_to_caam32(caam32_to_cpu(*desc) + 1);
130 }
131
132 #define append_u32 append_cmd
133
append_u64(u32 * const desc,u64 data)134 static inline void append_u64(u32 * const desc, u64 data)
135 {
136 u32 *offset = desc_end(desc);
137
138 /* Only 32-bit alignment is guaranteed in descriptor buffer */
139 if (caam_little_end) {
140 *offset = cpu_to_caam32(lower_32_bits(data));
141 *(++offset) = cpu_to_caam32(upper_32_bits(data));
142 } else {
143 *offset = cpu_to_caam32(upper_32_bits(data));
144 *(++offset) = cpu_to_caam32(lower_32_bits(data));
145 }
146
147 (*desc) = cpu_to_caam32(caam32_to_cpu(*desc) + 2);
148 }
149
150 /* Write command without affecting header, and return pointer to next word */
write_cmd(u32 * const desc,u32 command)151 static inline u32 *write_cmd(u32 * const desc, u32 command)
152 {
153 *desc = cpu_to_caam32(command);
154
155 return desc + 1;
156 }
157
append_cmd_ptr(u32 * const desc,dma_addr_t ptr,int len,u32 command)158 static inline void append_cmd_ptr(u32 * const desc, dma_addr_t ptr, int len,
159 u32 command)
160 {
161 append_cmd(desc, command | len);
162 append_ptr(desc, ptr);
163 }
164
165 /* Write length after pointer, rather than inside command */
append_cmd_ptr_extlen(u32 * const desc,dma_addr_t ptr,unsigned int len,u32 command)166 static inline void append_cmd_ptr_extlen(u32 * const desc, dma_addr_t ptr,
167 unsigned int len, u32 command)
168 {
169 append_cmd(desc, command);
170 if (!(command & (SQIN_RTO | SQIN_PRE)))
171 append_ptr(desc, ptr);
172 append_cmd(desc, len);
173 }
174
append_cmd_data(u32 * const desc,const void * data,int len,u32 command)175 static inline void append_cmd_data(u32 * const desc, const void *data, int len,
176 u32 command)
177 {
178 append_cmd(desc, command | IMMEDIATE | len);
179 append_data(desc, data, len);
180 }
181
182 #define APPEND_CMD_RET(cmd, op) \
183 static inline u32 *append_##cmd(u32 * const desc, u32 options) \
184 { \
185 u32 *cmd = desc_end(desc); \
186 PRINT_POS; \
187 append_cmd(desc, CMD_##op | options); \
188 return cmd; \
189 }
APPEND_CMD_RET(jump,JUMP)190 APPEND_CMD_RET(jump, JUMP)
191 APPEND_CMD_RET(move, MOVE)
192
193 static inline void set_jump_tgt_here(u32 * const desc, u32 *jump_cmd)
194 {
195 *jump_cmd = cpu_to_caam32(caam32_to_cpu(*jump_cmd) |
196 (desc_len(desc) - (jump_cmd - desc)));
197 }
198
set_move_tgt_here(u32 * const desc,u32 * move_cmd)199 static inline void set_move_tgt_here(u32 * const desc, u32 *move_cmd)
200 {
201 u32 val = caam32_to_cpu(*move_cmd);
202
203 val &= ~MOVE_OFFSET_MASK;
204 val |= (desc_len(desc) << (MOVE_OFFSET_SHIFT + 2)) & MOVE_OFFSET_MASK;
205 *move_cmd = cpu_to_caam32(val);
206 }
207
208 #define APPEND_CMD(cmd, op) \
209 static inline void append_##cmd(u32 * const desc, u32 options) \
210 { \
211 PRINT_POS; \
212 append_cmd(desc, CMD_##op | options); \
213 }
APPEND_CMD(operation,OPERATION)214 APPEND_CMD(operation, OPERATION)
215
216 #define APPEND_CMD_LEN(cmd, op) \
217 static inline void append_##cmd(u32 * const desc, unsigned int len, \
218 u32 options) \
219 { \
220 PRINT_POS; \
221 append_cmd(desc, CMD_##op | len | options); \
222 }
223
224 APPEND_CMD_LEN(seq_load, SEQ_LOAD)
225 APPEND_CMD_LEN(seq_store, SEQ_STORE)
226 APPEND_CMD_LEN(seq_fifo_load, SEQ_FIFO_LOAD)
227 APPEND_CMD_LEN(seq_fifo_store, SEQ_FIFO_STORE)
228
229 #define APPEND_CMD_PTR(cmd, op) \
230 static inline void append_##cmd(u32 * const desc, dma_addr_t ptr, \
231 unsigned int len, u32 options) \
232 { \
233 PRINT_POS; \
234 append_cmd_ptr(desc, ptr, len, CMD_##op | options); \
235 }
236 APPEND_CMD_PTR(key, KEY)
237 APPEND_CMD_PTR(load, LOAD)
238 APPEND_CMD_PTR(fifo_load, FIFO_LOAD)
239 APPEND_CMD_PTR(fifo_store, FIFO_STORE)
240
241 static inline void append_store(u32 * const desc, dma_addr_t ptr,
242 unsigned int len, u32 options)
243 {
244 u32 cmd_src;
245
246 cmd_src = options & LDST_SRCDST_MASK;
247
248 append_cmd(desc, CMD_STORE | options | len);
249
250 /* The following options do not require pointer */
251 if (!(cmd_src == LDST_SRCDST_WORD_DESCBUF_SHARED ||
252 cmd_src == LDST_SRCDST_WORD_DESCBUF_JOB ||
253 cmd_src == LDST_SRCDST_WORD_DESCBUF_JOB_WE ||
254 cmd_src == LDST_SRCDST_WORD_DESCBUF_SHARED_WE))
255 append_ptr(desc, ptr);
256 }
257
258 #define APPEND_SEQ_PTR_INTLEN(cmd, op) \
259 static inline void append_seq_##cmd##_ptr_intlen(u32 * const desc, \
260 dma_addr_t ptr, \
261 unsigned int len, \
262 u32 options) \
263 { \
264 PRINT_POS; \
265 if (options & (SQIN_RTO | SQIN_PRE)) \
266 append_cmd(desc, CMD_SEQ_##op##_PTR | len | options); \
267 else \
268 append_cmd_ptr(desc, ptr, len, CMD_SEQ_##op##_PTR | options); \
269 }
270 APPEND_SEQ_PTR_INTLEN(in, IN)
271 APPEND_SEQ_PTR_INTLEN(out, OUT)
272
273 #define APPEND_CMD_PTR_TO_IMM(cmd, op) \
274 static inline void append_##cmd##_as_imm(u32 * const desc, const void *data, \
275 unsigned int len, u32 options) \
276 { \
277 PRINT_POS; \
278 append_cmd_data(desc, data, len, CMD_##op | options); \
279 }
280 APPEND_CMD_PTR_TO_IMM(load, LOAD);
281 APPEND_CMD_PTR_TO_IMM(fifo_load, FIFO_LOAD);
282
283 #define APPEND_CMD_PTR_EXTLEN(cmd, op) \
284 static inline void append_##cmd##_extlen(u32 * const desc, dma_addr_t ptr, \
285 unsigned int len, u32 options) \
286 { \
287 PRINT_POS; \
288 append_cmd_ptr_extlen(desc, ptr, len, CMD_##op | SQIN_EXT | options); \
289 }
290 APPEND_CMD_PTR_EXTLEN(seq_in_ptr, SEQ_IN_PTR)
291 APPEND_CMD_PTR_EXTLEN(seq_out_ptr, SEQ_OUT_PTR)
292
293 /*
294 * Determine whether to store length internally or externally depending on
295 * the size of its type
296 */
297 #define APPEND_CMD_PTR_LEN(cmd, op, type) \
298 static inline void append_##cmd(u32 * const desc, dma_addr_t ptr, \
299 type len, u32 options) \
300 { \
301 PRINT_POS; \
302 if (sizeof(type) > sizeof(u16)) \
303 append_##cmd##_extlen(desc, ptr, len, options); \
304 else \
305 append_##cmd##_intlen(desc, ptr, len, options); \
306 }
307 APPEND_CMD_PTR_LEN(seq_in_ptr, SEQ_IN_PTR, u32)
308 APPEND_CMD_PTR_LEN(seq_out_ptr, SEQ_OUT_PTR, u32)
309
310 /*
311 * 2nd variant for commands whose specified immediate length differs
312 * from length of immediate data provided, e.g., split keys
313 */
314 #define APPEND_CMD_PTR_TO_IMM2(cmd, op) \
315 static inline void append_##cmd##_as_imm(u32 * const desc, const void *data, \
316 unsigned int data_len, \
317 unsigned int len, u32 options) \
318 { \
319 PRINT_POS; \
320 append_cmd(desc, CMD_##op | IMMEDIATE | len | options); \
321 append_data(desc, data, data_len); \
322 }
323 APPEND_CMD_PTR_TO_IMM2(key, KEY);
324
325 #define APPEND_CMD_RAW_IMM(cmd, op, type) \
326 static inline void append_##cmd##_imm_##type(u32 * const desc, type immediate, \
327 u32 options) \
328 { \
329 PRINT_POS; \
330 append_cmd(desc, CMD_##op | IMMEDIATE | options | sizeof(type)); \
331 append_cmd(desc, immediate); \
332 }
333 APPEND_CMD_RAW_IMM(load, LOAD, u32);
334
335 /*
336 * ee - endianness
337 * size - size of immediate type in bytes
338 */
339 #define APPEND_CMD_RAW_IMM2(cmd, op, ee, size) \
340 static inline void append_##cmd##_imm_##ee##size(u32 *desc, \
341 u##size immediate, \
342 u32 options) \
343 { \
344 __##ee##size data = cpu_to_##ee##size(immediate); \
345 PRINT_POS; \
346 append_cmd(desc, CMD_##op | IMMEDIATE | options | sizeof(data)); \
347 append_data(desc, &data, sizeof(data)); \
348 }
349
350 APPEND_CMD_RAW_IMM2(load, LOAD, be, 32);
351
352 /*
353 * Append math command. Only the last part of destination and source need to
354 * be specified
355 */
356 #define APPEND_MATH(op, desc, dest, src_0, src_1, len) \
357 append_cmd(desc, CMD_MATH | MATH_FUN_##op | MATH_DEST_##dest | \
358 MATH_SRC0_##src_0 | MATH_SRC1_##src_1 | (u32)len);
359
360 #define append_math_add(desc, dest, src0, src1, len) \
361 APPEND_MATH(ADD, desc, dest, src0, src1, len)
362 #define append_math_sub(desc, dest, src0, src1, len) \
363 APPEND_MATH(SUB, desc, dest, src0, src1, len)
364 #define append_math_add_c(desc, dest, src0, src1, len) \
365 APPEND_MATH(ADDC, desc, dest, src0, src1, len)
366 #define append_math_sub_b(desc, dest, src0, src1, len) \
367 APPEND_MATH(SUBB, desc, dest, src0, src1, len)
368 #define append_math_and(desc, dest, src0, src1, len) \
369 APPEND_MATH(AND, desc, dest, src0, src1, len)
370 #define append_math_or(desc, dest, src0, src1, len) \
371 APPEND_MATH(OR, desc, dest, src0, src1, len)
372 #define append_math_xor(desc, dest, src0, src1, len) \
373 APPEND_MATH(XOR, desc, dest, src0, src1, len)
374 #define append_math_lshift(desc, dest, src0, src1, len) \
375 APPEND_MATH(LSHIFT, desc, dest, src0, src1, len)
376 #define append_math_rshift(desc, dest, src0, src1, len) \
377 APPEND_MATH(RSHIFT, desc, dest, src0, src1, len)
378 #define append_math_ldshift(desc, dest, src0, src1, len) \
379 APPEND_MATH(SHLD, desc, dest, src0, src1, len)
380
381 /* Exactly one source is IMM. Data is passed in as u32 value */
382 #define APPEND_MATH_IMM_u32(op, desc, dest, src_0, src_1, data) \
383 do { \
384 APPEND_MATH(op, desc, dest, src_0, src_1, CAAM_CMD_SZ); \
385 append_cmd(desc, data); \
386 } while (0)
387
388 #define append_math_add_imm_u32(desc, dest, src0, src1, data) \
389 APPEND_MATH_IMM_u32(ADD, desc, dest, src0, src1, data)
390 #define append_math_sub_imm_u32(desc, dest, src0, src1, data) \
391 APPEND_MATH_IMM_u32(SUB, desc, dest, src0, src1, data)
392 #define append_math_add_c_imm_u32(desc, dest, src0, src1, data) \
393 APPEND_MATH_IMM_u32(ADDC, desc, dest, src0, src1, data)
394 #define append_math_sub_b_imm_u32(desc, dest, src0, src1, data) \
395 APPEND_MATH_IMM_u32(SUBB, desc, dest, src0, src1, data)
396 #define append_math_and_imm_u32(desc, dest, src0, src1, data) \
397 APPEND_MATH_IMM_u32(AND, desc, dest, src0, src1, data)
398 #define append_math_or_imm_u32(desc, dest, src0, src1, data) \
399 APPEND_MATH_IMM_u32(OR, desc, dest, src0, src1, data)
400 #define append_math_xor_imm_u32(desc, dest, src0, src1, data) \
401 APPEND_MATH_IMM_u32(XOR, desc, dest, src0, src1, data)
402 #define append_math_lshift_imm_u32(desc, dest, src0, src1, data) \
403 APPEND_MATH_IMM_u32(LSHIFT, desc, dest, src0, src1, data)
404 #define append_math_rshift_imm_u32(desc, dest, src0, src1, data) \
405 APPEND_MATH_IMM_u32(RSHIFT, desc, dest, src0, src1, data)
406
407 /* Exactly one source is IMM. Data is passed in as u64 value */
408 #define APPEND_MATH_IMM_u64(op, desc, dest, src_0, src_1, data) \
409 do { \
410 u32 upper = (data >> 16) >> 16; \
411 APPEND_MATH(op, desc, dest, src_0, src_1, CAAM_CMD_SZ * 2 | \
412 (upper ? 0 : MATH_IFB)); \
413 if (upper) \
414 append_u64(desc, data); \
415 else \
416 append_u32(desc, lower_32_bits(data)); \
417 } while (0)
418
419 #define append_math_add_imm_u64(desc, dest, src0, src1, data) \
420 APPEND_MATH_IMM_u64(ADD, desc, dest, src0, src1, data)
421 #define append_math_sub_imm_u64(desc, dest, src0, src1, data) \
422 APPEND_MATH_IMM_u64(SUB, desc, dest, src0, src1, data)
423 #define append_math_add_c_imm_u64(desc, dest, src0, src1, data) \
424 APPEND_MATH_IMM_u64(ADDC, desc, dest, src0, src1, data)
425 #define append_math_sub_b_imm_u64(desc, dest, src0, src1, data) \
426 APPEND_MATH_IMM_u64(SUBB, desc, dest, src0, src1, data)
427 #define append_math_and_imm_u64(desc, dest, src0, src1, data) \
428 APPEND_MATH_IMM_u64(AND, desc, dest, src0, src1, data)
429 #define append_math_or_imm_u64(desc, dest, src0, src1, data) \
430 APPEND_MATH_IMM_u64(OR, desc, dest, src0, src1, data)
431 #define append_math_xor_imm_u64(desc, dest, src0, src1, data) \
432 APPEND_MATH_IMM_u64(XOR, desc, dest, src0, src1, data)
433 #define append_math_lshift_imm_u64(desc, dest, src0, src1, data) \
434 APPEND_MATH_IMM_u64(LSHIFT, desc, dest, src0, src1, data)
435 #define append_math_rshift_imm_u64(desc, dest, src0, src1, data) \
436 APPEND_MATH_IMM_u64(RSHIFT, desc, dest, src0, src1, data)
437
438 /**
439 * struct alginfo - Container for algorithm details
440 * @algtype: algorithm selector; for valid values, see documentation of the
441 * functions where it is used.
442 * @keylen: length of the provided algorithm key, in bytes
443 * @keylen_pad: padded length of the provided algorithm key, in bytes
444 * @key: address where algorithm key resides; virtual address if key_inline
445 * is true, dma (bus) address if key_inline is false.
446 * @key_inline: true - key can be inlined in the descriptor; false - key is
447 * referenced by the descriptor
448 */
449 struct alginfo {
450 u32 algtype;
451 unsigned int keylen;
452 unsigned int keylen_pad;
453 union {
454 dma_addr_t key_dma;
455 const void *key_virt;
456 };
457 bool key_inline;
458 };
459
460 /**
461 * desc_inline_query() - Provide indications on which data items can be inlined
462 * and which shall be referenced in a shared descriptor.
463 * @sd_base_len: Shared descriptor base length - bytes consumed by the commands,
464 * excluding the data items to be inlined (or corresponding
465 * pointer if an item is not inlined). Each cnstr_* function that
466 * generates descriptors should have a define mentioning
467 * corresponding length.
468 * @jd_len: Maximum length of the job descriptor(s) that will be used
469 * together with the shared descriptor.
470 * @data_len: Array of lengths of the data items trying to be inlined
471 * @inl_mask: 32bit mask with bit x = 1 if data item x can be inlined, 0
472 * otherwise.
473 * @count: Number of data items (size of @data_len array); must be <= 32
474 *
475 * Return: 0 if data can be inlined / referenced, negative value if not. If 0,
476 * check @inl_mask for details.
477 */
desc_inline_query(unsigned int sd_base_len,unsigned int jd_len,unsigned int * data_len,u32 * inl_mask,unsigned int count)478 static inline int desc_inline_query(unsigned int sd_base_len,
479 unsigned int jd_len, unsigned int *data_len,
480 u32 *inl_mask, unsigned int count)
481 {
482 int rem_bytes = (int)(CAAM_DESC_BYTES_MAX - sd_base_len - jd_len);
483 unsigned int i;
484
485 *inl_mask = 0;
486 for (i = 0; (i < count) && (rem_bytes > 0); i++) {
487 if (rem_bytes - (int)(data_len[i] +
488 (count - i - 1) * CAAM_PTR_SZ) >= 0) {
489 rem_bytes -= data_len[i];
490 *inl_mask |= (1 << i);
491 } else {
492 rem_bytes -= CAAM_PTR_SZ;
493 }
494 }
495
496 return (rem_bytes >= 0) ? 0 : -1;
497 }
498
499 /**
500 * append_proto_dkp - Derived Key Protocol (DKP): key -> split key
501 * @desc: pointer to buffer used for descriptor construction
502 * @adata: pointer to authentication transform definitions.
503 * keylen should be the length of initial key, while keylen_pad
504 * the length of the derived (split) key.
505 * Valid algorithm values - one of OP_ALG_ALGSEL_{MD5, SHA1, SHA224,
506 * SHA256, SHA384, SHA512}.
507 */
append_proto_dkp(u32 * const desc,struct alginfo * adata)508 static inline void append_proto_dkp(u32 * const desc, struct alginfo *adata)
509 {
510 u32 protid;
511
512 /*
513 * Quick & dirty translation from OP_ALG_ALGSEL_{MD5, SHA*}
514 * to OP_PCLID_DKP_{MD5, SHA*}
515 */
516 protid = (adata->algtype & OP_ALG_ALGSEL_SUBMASK) |
517 (0x20 << OP_ALG_ALGSEL_SHIFT);
518
519 if (adata->key_inline) {
520 int words;
521
522 append_operation(desc, OP_TYPE_UNI_PROTOCOL | protid |
523 OP_PCL_DKP_SRC_IMM | OP_PCL_DKP_DST_IMM |
524 adata->keylen);
525 append_data(desc, adata->key_virt, adata->keylen);
526
527 /* Reserve space in descriptor buffer for the derived key */
528 words = (ALIGN(adata->keylen_pad, CAAM_CMD_SZ) -
529 ALIGN(adata->keylen, CAAM_CMD_SZ)) / CAAM_CMD_SZ;
530 if (words)
531 (*desc) = cpu_to_caam32(caam32_to_cpu(*desc) + words);
532 } else {
533 append_operation(desc, OP_TYPE_UNI_PROTOCOL | protid |
534 OP_PCL_DKP_SRC_PTR | OP_PCL_DKP_DST_PTR |
535 adata->keylen);
536 append_ptr(desc, adata->key_dma);
537 }
538 }
539
540 #endif /* DESC_CONSTR_H */
541
