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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * caam descriptor construction helper functions
4 *
5 * Copyright 2008-2012 Freescale Semiconductor, Inc.
6 * Copyright 2019 NXP
7 */
8
9#ifndef DESC_CONSTR_H
10#define DESC_CONSTR_H
11
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_sz
18#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 points
28 * to shared descriptor (as pointed by context_a of FQ to CAAM).
29 * When the job descriptor is executed by deco, the whole job
30 * descriptor together with shared descriptor gets loaded in
31 * 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 contents
45 * into deco buffer.
46 *
47 * Apart from shdesc contents, the total number of words that
48 * get loaded in deco buffer are '8' or '11'. The remaining words
49 * 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 DEBUG
54#define PRINT_POS do { printk(KERN_DEBUG "%02d: %s\n", desc_len(desc),\
55 &__func__[sizeof("append")]); } while (0)
56#else
57#define PRINT_POS
58#endif
59
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 entries
76 * are in the table. It's SW's responsibility to make sure these accesses
77 * 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_cmd
184
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 on
347 * the size of its type
348 */
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 differs
364 * from length of immediate data provided, e.g., split keys
365 */
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 - endianness
393 * size - size of immediate type in bytes
394 */
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 to
410 * be specified
411 */
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 details
496 * @algtype: algorithm selector; for valid values, see documentation of the
497 * functions where it is used.
498 * @keylen: length of the provided algorithm key, in bytes
499 * @keylen_pad: padded length of the provided algorithm key, in bytes
500 * @key_dma: dma (bus) address where algorithm key resides
501 * @key_virt: virtual address where algorithm key resides
502 * @key_inline: true - key can be inlined in the descriptor; false - key is
503 * referenced by the descriptor
504 */
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 inlined
516 * 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 corresponding
519 * pointer if an item is not inlined). Each cnstr_* function that
520 * generates descriptors should have a define mentioning
521 * corresponding length.
522 * @jd_len: Maximum length of the job descriptor(s) that will be used
523 * together with the shared descriptor.
524 * @data_len: Array of lengths of the data items trying to be inlined
525 * @inl_mask: 32bit mask with bit x = 1 if data item x can be inlined, 0
526 * otherwise.
527 * @count: Number of data items (size of @data_len array); must be <= 32
528 *
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 key
555 * @desc: pointer to buffer used for descriptor construction
556 * @adata: pointer to authentication transform definitions.
557 * keylen should be the length of initial key, while keylen_pad
558 * 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 */
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
38extern bool caam_little_end;
39
40static inline int desc_len(u32 * const desc)
41{
42 return caam32_to_cpu(*desc) & HDR_DESCLEN_MASK;
43}
44
45static inline int desc_bytes(void * const desc)
46{
47 return desc_len(desc) * CAAM_CMD_SZ;
48}
49
50static inline u32 *desc_end(u32 * const desc)
51{
52 return desc + desc_len(desc);
53}
54
55static inline void *sh_desc_pdb(u32 * const desc)
56{
57 return desc + 1;
58}
59
60static inline void init_desc(u32 * const desc, u32 options)
61{
62 *desc = cpu_to_caam32((options | HDR_ONE) + 1);
63}
64
65static 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
71static 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
80static inline void init_job_desc(u32 * const desc, u32 options)
81{
82 init_desc(desc, CMD_DESC_HDR | options);
83}
84
85static 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
93static 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
103static 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
112static 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
123static 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
134static 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 */
151static inline u32 *write_cmd(u32 * const desc, u32 command)
152{
153 *desc = cpu_to_caam32(command);
154
155 return desc + 1;
156}
157
158static 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 */
166static 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
175static 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) \
183static 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}
190APPEND_CMD_RET(jump, JUMP)
191APPEND_CMD_RET(move, MOVE)
192
193static 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
199static 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) \
209static inline void append_##cmd(u32 * const desc, u32 options) \
210{ \
211 PRINT_POS; \
212 append_cmd(desc, CMD_##op | options); \
213}
214APPEND_CMD(operation, OPERATION)
215
216#define APPEND_CMD_LEN(cmd, op) \
217static 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
224APPEND_CMD_LEN(seq_load, SEQ_LOAD)
225APPEND_CMD_LEN(seq_store, SEQ_STORE)
226APPEND_CMD_LEN(seq_fifo_load, SEQ_FIFO_LOAD)
227APPEND_CMD_LEN(seq_fifo_store, SEQ_FIFO_STORE)
228
229#define APPEND_CMD_PTR(cmd, op) \
230static 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}
236APPEND_CMD_PTR(key, KEY)
237APPEND_CMD_PTR(load, LOAD)
238APPEND_CMD_PTR(fifo_load, FIFO_LOAD)
239APPEND_CMD_PTR(fifo_store, FIFO_STORE)
240
241static 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) \
259static 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}
270APPEND_SEQ_PTR_INTLEN(in, IN)
271APPEND_SEQ_PTR_INTLEN(out, OUT)
272
273#define APPEND_CMD_PTR_TO_IMM(cmd, op) \
274static 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}
280APPEND_CMD_PTR_TO_IMM(load, LOAD);
281APPEND_CMD_PTR_TO_IMM(fifo_load, FIFO_LOAD);
282
283#define APPEND_CMD_PTR_EXTLEN(cmd, op) \
284static 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}
290APPEND_CMD_PTR_EXTLEN(seq_in_ptr, SEQ_IN_PTR)
291APPEND_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) \
298static 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}
307APPEND_CMD_PTR_LEN(seq_in_ptr, SEQ_IN_PTR, u32)
308APPEND_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) \
315static 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}
323APPEND_CMD_PTR_TO_IMM2(key, KEY);
324
325#define APPEND_CMD_RAW_IMM(cmd, op, type) \
326static 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}
333APPEND_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) \
340static 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
350APPEND_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) \
357append_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) \
383do { \
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) \
409do { \
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 */
449struct 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 */
478static 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 */
508static 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 */