2 * caam descriptor construction helper functions
4 * Copyright 2008-2012 Freescale Semiconductor, Inc.
10 #define IMMEDIATE (1 << 23)
11 #define CAAM_CMD_SZ sizeof(u32)
12 #define CAAM_PTR_SZ sizeof(dma_addr_t)
13 #define CAAM_DESC_BYTES_MAX (CAAM_CMD_SZ * MAX_CAAM_DESCSIZE)
14 #define DESC_JOB_IO_LEN (CAAM_CMD_SZ * 5 + CAAM_PTR_SZ * 3)
17 #define PRINT_POS do { printk(KERN_DEBUG "%02d: %s\n", desc_len(desc),\
18 &__func__[sizeof("append")]); } while (0)
23 #define SET_OK_NO_PROP_ERRORS (IMMEDIATE | LDST_CLASS_DECO | \
24 LDST_SRCDST_WORD_DECOCTRL | \
25 (LDOFF_CHG_SHARE_OK_NO_PROP << \
27 #define DISABLE_AUTO_INFO_FIFO (IMMEDIATE | LDST_CLASS_DECO | \
28 LDST_SRCDST_WORD_DECOCTRL | \
29 (LDOFF_DISABLE_AUTO_NFIFO << LDST_OFFSET_SHIFT))
30 #define ENABLE_AUTO_INFO_FIFO (IMMEDIATE | LDST_CLASS_DECO | \
31 LDST_SRCDST_WORD_DECOCTRL | \
32 (LDOFF_ENABLE_AUTO_NFIFO << LDST_OFFSET_SHIFT))
34 extern bool caam_little_end
;
36 static inline int desc_len(u32
* const desc
)
38 return caam32_to_cpu(*desc
) & HDR_DESCLEN_MASK
;
41 static inline int desc_bytes(void * const desc
)
43 return desc_len(desc
) * CAAM_CMD_SZ
;
46 static inline u32
*desc_end(u32
* const desc
)
48 return desc
+ desc_len(desc
);
51 static inline void *sh_desc_pdb(u32
* const desc
)
56 static inline void init_desc(u32
* const desc
, u32 options
)
58 *desc
= cpu_to_caam32((options
| HDR_ONE
) + 1);
61 static inline void init_sh_desc(u32
* const desc
, u32 options
)
64 init_desc(desc
, CMD_SHARED_DESC_HDR
| options
);
67 static inline void init_sh_desc_pdb(u32
* const desc
, u32 options
,
70 u32 pdb_len
= (pdb_bytes
+ CAAM_CMD_SZ
- 1) / CAAM_CMD_SZ
;
72 init_sh_desc(desc
, (((pdb_len
+ 1) << HDR_START_IDX_SHIFT
) + pdb_len
) |
76 static inline void init_job_desc(u32
* const desc
, u32 options
)
78 init_desc(desc
, CMD_DESC_HDR
| options
);
81 static inline void init_job_desc_pdb(u32
* const desc
, u32 options
,
84 u32 pdb_len
= (pdb_bytes
+ CAAM_CMD_SZ
- 1) / CAAM_CMD_SZ
;
86 init_job_desc(desc
, (((pdb_len
+ 1) << HDR_START_IDX_SHIFT
)) | options
);
89 static inline void append_ptr(u32
* const desc
, dma_addr_t ptr
)
91 dma_addr_t
*offset
= (dma_addr_t
*)desc_end(desc
);
93 *offset
= cpu_to_caam_dma(ptr
);
95 (*desc
) = cpu_to_caam32(caam32_to_cpu(*desc
) +
96 CAAM_PTR_SZ
/ CAAM_CMD_SZ
);
99 static inline void init_job_desc_shared(u32
* const desc
, dma_addr_t ptr
,
100 int len
, u32 options
)
103 init_job_desc(desc
, HDR_SHARED
| options
|
104 (len
<< HDR_START_IDX_SHIFT
));
105 append_ptr(desc
, ptr
);
108 static inline void append_data(u32
* const desc
, void *data
, int len
)
110 u32
*offset
= desc_end(desc
);
112 if (len
) /* avoid sparse warning: memcpy with byte count of 0 */
113 memcpy(offset
, data
, len
);
115 (*desc
) = cpu_to_caam32(caam32_to_cpu(*desc
) +
116 (len
+ CAAM_CMD_SZ
- 1) / CAAM_CMD_SZ
);
119 static inline void append_cmd(u32
* const desc
, u32 command
)
121 u32
*cmd
= desc_end(desc
);
123 *cmd
= cpu_to_caam32(command
);
125 (*desc
) = cpu_to_caam32(caam32_to_cpu(*desc
) + 1);
128 #define append_u32 append_cmd
130 static inline void append_u64(u32
* const desc
, u64 data
)
132 u32
*offset
= desc_end(desc
);
134 /* Only 32-bit alignment is guaranteed in descriptor buffer */
135 if (caam_little_end
) {
136 *offset
= cpu_to_caam32(lower_32_bits(data
));
137 *(++offset
) = cpu_to_caam32(upper_32_bits(data
));
139 *offset
= cpu_to_caam32(upper_32_bits(data
));
140 *(++offset
) = cpu_to_caam32(lower_32_bits(data
));
143 (*desc
) = cpu_to_caam32(caam32_to_cpu(*desc
) + 2);
146 /* Write command without affecting header, and return pointer to next word */
147 static inline u32
*write_cmd(u32
* const desc
, u32 command
)
149 *desc
= cpu_to_caam32(command
);
154 static inline void append_cmd_ptr(u32
* const desc
, dma_addr_t ptr
, int len
,
157 append_cmd(desc
, command
| len
);
158 append_ptr(desc
, ptr
);
161 /* Write length after pointer, rather than inside command */
162 static inline void append_cmd_ptr_extlen(u32
* const desc
, dma_addr_t ptr
,
163 unsigned int len
, u32 command
)
165 append_cmd(desc
, command
);
166 if (!(command
& (SQIN_RTO
| SQIN_PRE
)))
167 append_ptr(desc
, ptr
);
168 append_cmd(desc
, len
);
171 static inline void append_cmd_data(u32
* const desc
, void *data
, int len
,
174 append_cmd(desc
, command
| IMMEDIATE
| len
);
175 append_data(desc
, data
, len
);
178 #define APPEND_CMD_RET(cmd, op) \
179 static inline u32 *append_##cmd(u32 * const desc, u32 options) \
181 u32 *cmd = desc_end(desc); \
183 append_cmd(desc, CMD_##op | options); \
186 APPEND_CMD_RET(jump
, JUMP
)
187 APPEND_CMD_RET(move
, MOVE
)
189 static inline void set_jump_tgt_here(u32
* const desc
, u32
*jump_cmd
)
191 *jump_cmd
= cpu_to_caam32(caam32_to_cpu(*jump_cmd
) |
192 (desc_len(desc
) - (jump_cmd
- desc
)));
195 static inline void set_move_tgt_here(u32
* const desc
, u32
*move_cmd
)
197 u32 val
= caam32_to_cpu(*move_cmd
);
199 val
&= ~MOVE_OFFSET_MASK
;
200 val
|= (desc_len(desc
) << (MOVE_OFFSET_SHIFT
+ 2)) & MOVE_OFFSET_MASK
;
201 *move_cmd
= cpu_to_caam32(val
);
204 #define APPEND_CMD(cmd, op) \
205 static inline void append_##cmd(u32 * const desc, u32 options) \
208 append_cmd(desc, CMD_##op | options); \
210 APPEND_CMD(operation
, OPERATION
)
212 #define APPEND_CMD_LEN(cmd, op) \
213 static inline void append_##cmd(u32 * const desc, unsigned int len, \
217 append_cmd(desc, CMD_##op | len | options); \
220 APPEND_CMD_LEN(seq_load
, SEQ_LOAD
)
221 APPEND_CMD_LEN(seq_store
, SEQ_STORE
)
222 APPEND_CMD_LEN(seq_fifo_load
, SEQ_FIFO_LOAD
)
223 APPEND_CMD_LEN(seq_fifo_store
, SEQ_FIFO_STORE
)
225 #define APPEND_CMD_PTR(cmd, op) \
226 static inline void append_##cmd(u32 * const desc, dma_addr_t ptr, \
227 unsigned int len, u32 options) \
230 append_cmd_ptr(desc, ptr, len, CMD_##op | options); \
232 APPEND_CMD_PTR(key
, KEY
)
233 APPEND_CMD_PTR(load
, LOAD
)
234 APPEND_CMD_PTR(fifo_load
, FIFO_LOAD
)
235 APPEND_CMD_PTR(fifo_store
, FIFO_STORE
)
237 static inline void append_store(u32
* const desc
, dma_addr_t ptr
,
238 unsigned int len
, u32 options
)
242 cmd_src
= options
& LDST_SRCDST_MASK
;
244 append_cmd(desc
, CMD_STORE
| options
| len
);
246 /* The following options do not require pointer */
247 if (!(cmd_src
== LDST_SRCDST_WORD_DESCBUF_SHARED
||
248 cmd_src
== LDST_SRCDST_WORD_DESCBUF_JOB
||
249 cmd_src
== LDST_SRCDST_WORD_DESCBUF_JOB_WE
||
250 cmd_src
== LDST_SRCDST_WORD_DESCBUF_SHARED_WE
))
251 append_ptr(desc
, ptr
);
254 #define APPEND_SEQ_PTR_INTLEN(cmd, op) \
255 static inline void append_seq_##cmd##_ptr_intlen(u32 * const desc, \
261 if (options & (SQIN_RTO | SQIN_PRE)) \
262 append_cmd(desc, CMD_SEQ_##op##_PTR | len | options); \
264 append_cmd_ptr(desc, ptr, len, CMD_SEQ_##op##_PTR | options); \
266 APPEND_SEQ_PTR_INTLEN(in
, IN
)
267 APPEND_SEQ_PTR_INTLEN(out
, OUT
)
269 #define APPEND_CMD_PTR_TO_IMM(cmd, op) \
270 static inline void append_##cmd##_as_imm(u32 * const desc, void *data, \
271 unsigned int len, u32 options) \
274 append_cmd_data(desc, data, len, CMD_##op | options); \
276 APPEND_CMD_PTR_TO_IMM(load
, LOAD
);
277 APPEND_CMD_PTR_TO_IMM(fifo_load
, FIFO_LOAD
);
279 #define APPEND_CMD_PTR_EXTLEN(cmd, op) \
280 static inline void append_##cmd##_extlen(u32 * const desc, dma_addr_t ptr, \
281 unsigned int len, u32 options) \
284 append_cmd_ptr_extlen(desc, ptr, len, CMD_##op | SQIN_EXT | options); \
286 APPEND_CMD_PTR_EXTLEN(seq_in_ptr
, SEQ_IN_PTR
)
287 APPEND_CMD_PTR_EXTLEN(seq_out_ptr
, SEQ_OUT_PTR
)
290 * Determine whether to store length internally or externally depending on
291 * the size of its type
293 #define APPEND_CMD_PTR_LEN(cmd, op, type) \
294 static inline void append_##cmd(u32 * const desc, dma_addr_t ptr, \
295 type len, u32 options) \
298 if (sizeof(type) > sizeof(u16)) \
299 append_##cmd##_extlen(desc, ptr, len, options); \
301 append_##cmd##_intlen(desc, ptr, len, options); \
303 APPEND_CMD_PTR_LEN(seq_in_ptr
, SEQ_IN_PTR
, u32
)
304 APPEND_CMD_PTR_LEN(seq_out_ptr
, SEQ_OUT_PTR
, u32
)
307 * 2nd variant for commands whose specified immediate length differs
308 * from length of immediate data provided, e.g., split keys
310 #define APPEND_CMD_PTR_TO_IMM2(cmd, op) \
311 static inline void append_##cmd##_as_imm(u32 * const desc, void *data, \
312 unsigned int data_len, \
313 unsigned int len, u32 options) \
316 append_cmd(desc, CMD_##op | IMMEDIATE | len | options); \
317 append_data(desc, data, data_len); \
319 APPEND_CMD_PTR_TO_IMM2(key
, KEY
);
321 #define APPEND_CMD_RAW_IMM(cmd, op, type) \
322 static inline void append_##cmd##_imm_##type(u32 * const desc, type immediate, \
326 append_cmd(desc, CMD_##op | IMMEDIATE | options | sizeof(type)); \
327 append_cmd(desc, immediate); \
329 APPEND_CMD_RAW_IMM(load
, LOAD
, u32
);
333 * size - size of immediate type in bytes
335 #define APPEND_CMD_RAW_IMM2(cmd, op, ee, size) \
336 static inline void append_##cmd##_imm_##ee##size(u32 *desc, \
340 __##ee##size data = cpu_to_##ee##size(immediate); \
342 append_cmd(desc, CMD_##op | IMMEDIATE | options | sizeof(data)); \
343 append_data(desc, &data, sizeof(data)); \
346 APPEND_CMD_RAW_IMM2(load
, LOAD
, be
, 32);
349 * Append math command. Only the last part of destination and source need to
352 #define APPEND_MATH(op, desc, dest, src_0, src_1, len) \
353 append_cmd(desc, CMD_MATH | MATH_FUN_##op | MATH_DEST_##dest | \
354 MATH_SRC0_##src_0 | MATH_SRC1_##src_1 | (u32)len);
356 #define append_math_add(desc, dest, src0, src1, len) \
357 APPEND_MATH(ADD, desc, dest, src0, src1, len)
358 #define append_math_sub(desc, dest, src0, src1, len) \
359 APPEND_MATH(SUB, desc, dest, src0, src1, len)
360 #define append_math_add_c(desc, dest, src0, src1, len) \
361 APPEND_MATH(ADDC, desc, dest, src0, src1, len)
362 #define append_math_sub_b(desc, dest, src0, src1, len) \
363 APPEND_MATH(SUBB, desc, dest, src0, src1, len)
364 #define append_math_and(desc, dest, src0, src1, len) \
365 APPEND_MATH(AND, desc, dest, src0, src1, len)
366 #define append_math_or(desc, dest, src0, src1, len) \
367 APPEND_MATH(OR, desc, dest, src0, src1, len)
368 #define append_math_xor(desc, dest, src0, src1, len) \
369 APPEND_MATH(XOR, desc, dest, src0, src1, len)
370 #define append_math_lshift(desc, dest, src0, src1, len) \
371 APPEND_MATH(LSHIFT, desc, dest, src0, src1, len)
372 #define append_math_rshift(desc, dest, src0, src1, len) \
373 APPEND_MATH(RSHIFT, desc, dest, src0, src1, len)
374 #define append_math_ldshift(desc, dest, src0, src1, len) \
375 APPEND_MATH(SHLD, desc, dest, src0, src1, len)
377 /* Exactly one source is IMM. Data is passed in as u32 value */
378 #define APPEND_MATH_IMM_u32(op, desc, dest, src_0, src_1, data) \
380 APPEND_MATH(op, desc, dest, src_0, src_1, CAAM_CMD_SZ); \
381 append_cmd(desc, data); \
384 #define append_math_add_imm_u32(desc, dest, src0, src1, data) \
385 APPEND_MATH_IMM_u32(ADD, desc, dest, src0, src1, data)
386 #define append_math_sub_imm_u32(desc, dest, src0, src1, data) \
387 APPEND_MATH_IMM_u32(SUB, desc, dest, src0, src1, data)
388 #define append_math_add_c_imm_u32(desc, dest, src0, src1, data) \
389 APPEND_MATH_IMM_u32(ADDC, desc, dest, src0, src1, data)
390 #define append_math_sub_b_imm_u32(desc, dest, src0, src1, data) \
391 APPEND_MATH_IMM_u32(SUBB, desc, dest, src0, src1, data)
392 #define append_math_and_imm_u32(desc, dest, src0, src1, data) \
393 APPEND_MATH_IMM_u32(AND, desc, dest, src0, src1, data)
394 #define append_math_or_imm_u32(desc, dest, src0, src1, data) \
395 APPEND_MATH_IMM_u32(OR, desc, dest, src0, src1, data)
396 #define append_math_xor_imm_u32(desc, dest, src0, src1, data) \
397 APPEND_MATH_IMM_u32(XOR, desc, dest, src0, src1, data)
398 #define append_math_lshift_imm_u32(desc, dest, src0, src1, data) \
399 APPEND_MATH_IMM_u32(LSHIFT, desc, dest, src0, src1, data)
400 #define append_math_rshift_imm_u32(desc, dest, src0, src1, data) \
401 APPEND_MATH_IMM_u32(RSHIFT, desc, dest, src0, src1, data)
403 /* Exactly one source is IMM. Data is passed in as u64 value */
404 #define APPEND_MATH_IMM_u64(op, desc, dest, src_0, src_1, data) \
406 u32 upper = (data >> 16) >> 16; \
407 APPEND_MATH(op, desc, dest, src_0, src_1, CAAM_CMD_SZ * 2 | \
408 (upper ? 0 : MATH_IFB)); \
410 append_u64(desc, data); \
412 append_u32(desc, lower_32_bits(data)); \
415 #define append_math_add_imm_u64(desc, dest, src0, src1, data) \
416 APPEND_MATH_IMM_u64(ADD, desc, dest, src0, src1, data)
417 #define append_math_sub_imm_u64(desc, dest, src0, src1, data) \
418 APPEND_MATH_IMM_u64(SUB, desc, dest, src0, src1, data)
419 #define append_math_add_c_imm_u64(desc, dest, src0, src1, data) \
420 APPEND_MATH_IMM_u64(ADDC, desc, dest, src0, src1, data)
421 #define append_math_sub_b_imm_u64(desc, dest, src0, src1, data) \
422 APPEND_MATH_IMM_u64(SUBB, desc, dest, src0, src1, data)
423 #define append_math_and_imm_u64(desc, dest, src0, src1, data) \
424 APPEND_MATH_IMM_u64(AND, desc, dest, src0, src1, data)
425 #define append_math_or_imm_u64(desc, dest, src0, src1, data) \
426 APPEND_MATH_IMM_u64(OR, desc, dest, src0, src1, data)
427 #define append_math_xor_imm_u64(desc, dest, src0, src1, data) \
428 APPEND_MATH_IMM_u64(XOR, desc, dest, src0, src1, data)
429 #define append_math_lshift_imm_u64(desc, dest, src0, src1, data) \
430 APPEND_MATH_IMM_u64(LSHIFT, desc, dest, src0, src1, data)
431 #define append_math_rshift_imm_u64(desc, dest, src0, src1, data) \
432 APPEND_MATH_IMM_u64(RSHIFT, desc, dest, src0, src1, data)
435 * struct alginfo - Container for algorithm details
436 * @algtype: algorithm selector; for valid values, see documentation of the
437 * functions where it is used.
438 * @keylen: length of the provided algorithm key, in bytes
439 * @keylen_pad: padded length of the provided algorithm key, in bytes
440 * @key: address where algorithm key resides; virtual address if key_inline
441 * is true, dma (bus) address if key_inline is false.
442 * @key_inline: true - key can be inlined in the descriptor; false - key is
443 * referenced by the descriptor
448 unsigned int keylen_pad
;
457 * desc_inline_query() - Provide indications on which data items can be inlined
458 * and which shall be referenced in a shared descriptor.
459 * @sd_base_len: Shared descriptor base length - bytes consumed by the commands,
460 * excluding the data items to be inlined (or corresponding
461 * pointer if an item is not inlined). Each cnstr_* function that
462 * generates descriptors should have a define mentioning
463 * corresponding length.
464 * @jd_len: Maximum length of the job descriptor(s) that will be used
465 * together with the shared descriptor.
466 * @data_len: Array of lengths of the data items trying to be inlined
467 * @inl_mask: 32bit mask with bit x = 1 if data item x can be inlined, 0
469 * @count: Number of data items (size of @data_len array); must be <= 32
471 * Return: 0 if data can be inlined / referenced, negative value if not. If 0,
472 * check @inl_mask for details.
474 static inline int desc_inline_query(unsigned int sd_base_len
,
475 unsigned int jd_len
, unsigned int *data_len
,
476 u32
*inl_mask
, unsigned int count
)
478 int rem_bytes
= (int)(CAAM_DESC_BYTES_MAX
- sd_base_len
- jd_len
);
482 for (i
= 0; (i
< count
) && (rem_bytes
> 0); i
++) {
483 if (rem_bytes
- (int)(data_len
[i
] +
484 (count
- i
- 1) * CAAM_PTR_SZ
) >= 0) {
485 rem_bytes
-= data_len
[i
];
486 *inl_mask
|= (1 << i
);
488 rem_bytes
-= CAAM_PTR_SZ
;
492 return (rem_bytes
>= 0) ? 0 : -1;