1 /*
2 * caam descriptor construction helper functions
3 *
4 * Copyright 2008-2012 Freescale Semiconductor, Inc.
5 */
6
7 #include "desc.h"
8
9 #define IMMEDIATE (1 << 23)
10 #define CAAM_CMD_SZ sizeof(u32)
11 #define CAAM_PTR_SZ sizeof(dma_addr_t)
12 #define CAAM_DESC_BYTES_MAX (CAAM_CMD_SZ * MAX_CAAM_DESCSIZE)
13 #define DESC_JOB_IO_LEN (CAAM_CMD_SZ * 5 + CAAM_PTR_SZ * 3)
14
15 #ifdef DEBUG
16 #define PRINT_POS do { printk(KERN_DEBUG "%02d: %s\n", desc_len(desc),\
17 &__func__[sizeof("append")]); } while (0)
18 #else
19 #define PRINT_POS
20 #endif
21
22 #define SET_OK_NO_PROP_ERRORS (IMMEDIATE | LDST_CLASS_DECO | \
23 LDST_SRCDST_WORD_DECOCTRL | \
24 (LDOFF_CHG_SHARE_OK_NO_PROP << \
25 LDST_OFFSET_SHIFT))
26 #define DISABLE_AUTO_INFO_FIFO (IMMEDIATE | LDST_CLASS_DECO | \
27 LDST_SRCDST_WORD_DECOCTRL | \
28 (LDOFF_DISABLE_AUTO_NFIFO << LDST_OFFSET_SHIFT))
29 #define ENABLE_AUTO_INFO_FIFO (IMMEDIATE | LDST_CLASS_DECO | \
30 LDST_SRCDST_WORD_DECOCTRL | \
31 (LDOFF_ENABLE_AUTO_NFIFO << LDST_OFFSET_SHIFT))
32
desc_len(u32 * desc)33 static inline int desc_len(u32 *desc)
34 {
35 return *desc & HDR_DESCLEN_MASK;
36 }
37
desc_bytes(void * desc)38 static inline int desc_bytes(void *desc)
39 {
40 return desc_len(desc) * CAAM_CMD_SZ;
41 }
42
desc_end(u32 * desc)43 static inline u32 *desc_end(u32 *desc)
44 {
45 return desc + desc_len(desc);
46 }
47
sh_desc_pdb(u32 * desc)48 static inline void *sh_desc_pdb(u32 *desc)
49 {
50 return desc + 1;
51 }
52
init_desc(u32 * desc,u32 options)53 static inline void init_desc(u32 *desc, u32 options)
54 {
55 *desc = (options | HDR_ONE) + 1;
56 }
57
init_sh_desc(u32 * desc,u32 options)58 static inline void init_sh_desc(u32 *desc, u32 options)
59 {
60 PRINT_POS;
61 init_desc(desc, CMD_SHARED_DESC_HDR | options);
62 }
63
init_sh_desc_pdb(u32 * desc,u32 options,size_t pdb_bytes)64 static inline void init_sh_desc_pdb(u32 *desc, u32 options, size_t pdb_bytes)
65 {
66 u32 pdb_len = (pdb_bytes + CAAM_CMD_SZ - 1) / CAAM_CMD_SZ;
67
68 init_sh_desc(desc, (((pdb_len + 1) << HDR_START_IDX_SHIFT) + pdb_len) |
69 options);
70 }
71
init_job_desc(u32 * desc,u32 options)72 static inline void init_job_desc(u32 *desc, u32 options)
73 {
74 init_desc(desc, CMD_DESC_HDR | options);
75 }
76
append_ptr(u32 * desc,dma_addr_t ptr)77 static inline void append_ptr(u32 *desc, dma_addr_t ptr)
78 {
79 dma_addr_t *offset = (dma_addr_t *)desc_end(desc);
80
81 *offset = ptr;
82
83 (*desc) += CAAM_PTR_SZ / CAAM_CMD_SZ;
84 }
85
init_job_desc_shared(u32 * desc,dma_addr_t ptr,int len,u32 options)86 static inline void init_job_desc_shared(u32 *desc, dma_addr_t ptr, int len,
87 u32 options)
88 {
89 PRINT_POS;
90 init_job_desc(desc, HDR_SHARED | options |
91 (len << HDR_START_IDX_SHIFT));
92 append_ptr(desc, ptr);
93 }
94
append_data(u32 * desc,void * data,int len)95 static inline void append_data(u32 *desc, void *data, int len)
96 {
97 u32 *offset = desc_end(desc);
98
99 if (len) /* avoid sparse warning: memcpy with byte count of 0 */
100 memcpy(offset, data, len);
101
102 (*desc) += (len + CAAM_CMD_SZ - 1) / CAAM_CMD_SZ;
103 }
104
append_cmd(u32 * desc,u32 command)105 static inline void append_cmd(u32 *desc, u32 command)
106 {
107 u32 *cmd = desc_end(desc);
108
109 *cmd = command;
110
111 (*desc)++;
112 }
113
114 #define append_u32 append_cmd
115
append_u64(u32 * desc,u64 data)116 static inline void append_u64(u32 *desc, u64 data)
117 {
118 u32 *offset = desc_end(desc);
119
120 *offset = upper_32_bits(data);
121 *(++offset) = lower_32_bits(data);
122
123 (*desc) += 2;
124 }
125
126 /* Write command without affecting header, and return pointer to next word */
write_cmd(u32 * desc,u32 command)127 static inline u32 *write_cmd(u32 *desc, u32 command)
128 {
129 *desc = command;
130
131 return desc + 1;
132 }
133
append_cmd_ptr(u32 * desc,dma_addr_t ptr,int len,u32 command)134 static inline void append_cmd_ptr(u32 *desc, dma_addr_t ptr, int len,
135 u32 command)
136 {
137 append_cmd(desc, command | len);
138 append_ptr(desc, ptr);
139 }
140
141 /* Write length after pointer, rather than inside command */
append_cmd_ptr_extlen(u32 * desc,dma_addr_t ptr,unsigned int len,u32 command)142 static inline void append_cmd_ptr_extlen(u32 *desc, dma_addr_t ptr,
143 unsigned int len, u32 command)
144 {
145 append_cmd(desc, command);
146 if (!(command & (SQIN_RTO | SQIN_PRE)))
147 append_ptr(desc, ptr);
148 append_cmd(desc, len);
149 }
150
append_cmd_data(u32 * desc,void * data,int len,u32 command)151 static inline void append_cmd_data(u32 *desc, void *data, int len,
152 u32 command)
153 {
154 append_cmd(desc, command | IMMEDIATE | len);
155 append_data(desc, data, len);
156 }
157
158 #define APPEND_CMD_RET(cmd, op) \
159 static inline u32 *append_##cmd(u32 *desc, u32 options) \
160 { \
161 u32 *cmd = desc_end(desc); \
162 PRINT_POS; \
163 append_cmd(desc, CMD_##op | options); \
164 return cmd; \
165 }
APPEND_CMD_RET(jump,JUMP)166 APPEND_CMD_RET(jump, JUMP)
167 APPEND_CMD_RET(move, MOVE)
168
169 static inline void set_jump_tgt_here(u32 *desc, u32 *jump_cmd)
170 {
171 *jump_cmd = *jump_cmd | (desc_len(desc) - (jump_cmd - desc));
172 }
173
set_move_tgt_here(u32 * desc,u32 * move_cmd)174 static inline void set_move_tgt_here(u32 *desc, u32 *move_cmd)
175 {
176 *move_cmd &= ~MOVE_OFFSET_MASK;
177 *move_cmd = *move_cmd | ((desc_len(desc) << (MOVE_OFFSET_SHIFT + 2)) &
178 MOVE_OFFSET_MASK);
179 }
180
181 #define APPEND_CMD(cmd, op) \
182 static inline void append_##cmd(u32 *desc, u32 options) \
183 { \
184 PRINT_POS; \
185 append_cmd(desc, CMD_##op | options); \
186 }
APPEND_CMD(operation,OPERATION)187 APPEND_CMD(operation, OPERATION)
188
189 #define APPEND_CMD_LEN(cmd, op) \
190 static inline void append_##cmd(u32 *desc, unsigned int len, u32 options) \
191 { \
192 PRINT_POS; \
193 append_cmd(desc, CMD_##op | len | options); \
194 }
195 APPEND_CMD_LEN(seq_store, SEQ_STORE)
196 APPEND_CMD_LEN(seq_fifo_load, SEQ_FIFO_LOAD)
197 APPEND_CMD_LEN(seq_fifo_store, SEQ_FIFO_STORE)
198
199 #define APPEND_CMD_PTR(cmd, op) \
200 static inline void append_##cmd(u32 *desc, dma_addr_t ptr, unsigned int len, \
201 u32 options) \
202 { \
203 PRINT_POS; \
204 append_cmd_ptr(desc, ptr, len, CMD_##op | options); \
205 }
206 APPEND_CMD_PTR(key, KEY)
207 APPEND_CMD_PTR(load, LOAD)
208 APPEND_CMD_PTR(fifo_load, FIFO_LOAD)
209 APPEND_CMD_PTR(fifo_store, FIFO_STORE)
210
211 static inline void append_store(u32 *desc, dma_addr_t ptr, unsigned int len,
212 u32 options)
213 {
214 u32 cmd_src;
215
216 cmd_src = options & LDST_SRCDST_MASK;
217
218 append_cmd(desc, CMD_STORE | options | len);
219
220 /* The following options do not require pointer */
221 if (!(cmd_src == LDST_SRCDST_WORD_DESCBUF_SHARED ||
222 cmd_src == LDST_SRCDST_WORD_DESCBUF_JOB ||
223 cmd_src == LDST_SRCDST_WORD_DESCBUF_JOB_WE ||
224 cmd_src == LDST_SRCDST_WORD_DESCBUF_SHARED_WE))
225 append_ptr(desc, ptr);
226 }
227
228 #define APPEND_SEQ_PTR_INTLEN(cmd, op) \
229 static inline void append_seq_##cmd##_ptr_intlen(u32 *desc, dma_addr_t ptr, \
230 unsigned int len, \
231 u32 options) \
232 { \
233 PRINT_POS; \
234 if (options & (SQIN_RTO | SQIN_PRE)) \
235 append_cmd(desc, CMD_SEQ_##op##_PTR | len | options); \
236 else \
237 append_cmd_ptr(desc, ptr, len, CMD_SEQ_##op##_PTR | options); \
238 }
239 APPEND_SEQ_PTR_INTLEN(in, IN)
240 APPEND_SEQ_PTR_INTLEN(out, OUT)
241
242 #define APPEND_CMD_PTR_TO_IMM(cmd, op) \
243 static inline void append_##cmd##_as_imm(u32 *desc, void *data, \
244 unsigned int len, u32 options) \
245 { \
246 PRINT_POS; \
247 append_cmd_data(desc, data, len, CMD_##op | options); \
248 }
249 APPEND_CMD_PTR_TO_IMM(load, LOAD);
250 APPEND_CMD_PTR_TO_IMM(fifo_load, FIFO_LOAD);
251
252 #define APPEND_CMD_PTR_EXTLEN(cmd, op) \
253 static inline void append_##cmd##_extlen(u32 *desc, dma_addr_t ptr, \
254 unsigned int len, u32 options) \
255 { \
256 PRINT_POS; \
257 append_cmd_ptr_extlen(desc, ptr, len, CMD_##op | SQIN_EXT | options); \
258 }
259 APPEND_CMD_PTR_EXTLEN(seq_in_ptr, SEQ_IN_PTR)
260 APPEND_CMD_PTR_EXTLEN(seq_out_ptr, SEQ_OUT_PTR)
261
262 /*
263 * Determine whether to store length internally or externally depending on
264 * the size of its type
265 */
266 #define APPEND_CMD_PTR_LEN(cmd, op, type) \
267 static inline void append_##cmd(u32 *desc, dma_addr_t ptr, \
268 type len, u32 options) \
269 { \
270 PRINT_POS; \
271 if (sizeof(type) > sizeof(u16)) \
272 append_##cmd##_extlen(desc, ptr, len, options); \
273 else \
274 append_##cmd##_intlen(desc, ptr, len, options); \
275 }
276 APPEND_CMD_PTR_LEN(seq_in_ptr, SEQ_IN_PTR, u32)
277 APPEND_CMD_PTR_LEN(seq_out_ptr, SEQ_OUT_PTR, u32)
278
279 /*
280 * 2nd variant for commands whose specified immediate length differs
281 * from length of immediate data provided, e.g., split keys
282 */
283 #define APPEND_CMD_PTR_TO_IMM2(cmd, op) \
284 static inline void append_##cmd##_as_imm(u32 *desc, void *data, \
285 unsigned int data_len, \
286 unsigned int len, u32 options) \
287 { \
288 PRINT_POS; \
289 append_cmd(desc, CMD_##op | IMMEDIATE | len | options); \
290 append_data(desc, data, data_len); \
291 }
292 APPEND_CMD_PTR_TO_IMM2(key, KEY);
293
294 #define APPEND_CMD_RAW_IMM(cmd, op, type) \
295 static inline void append_##cmd##_imm_##type(u32 *desc, type immediate, \
296 u32 options) \
297 { \
298 PRINT_POS; \
299 append_cmd(desc, CMD_##op | IMMEDIATE | options | sizeof(type)); \
300 append_cmd(desc, immediate); \
301 }
302 APPEND_CMD_RAW_IMM(load, LOAD, u32);
303
304 /*
305 * Append math command. Only the last part of destination and source need to
306 * be specified
307 */
308 #define APPEND_MATH(op, desc, dest, src_0, src_1, len) \
309 append_cmd(desc, CMD_MATH | MATH_FUN_##op | MATH_DEST_##dest | \
310 MATH_SRC0_##src_0 | MATH_SRC1_##src_1 | (u32)len);
311
312 #define append_math_add(desc, dest, src0, src1, len) \
313 APPEND_MATH(ADD, desc, dest, src0, src1, len)
314 #define append_math_sub(desc, dest, src0, src1, len) \
315 APPEND_MATH(SUB, desc, dest, src0, src1, len)
316 #define append_math_add_c(desc, dest, src0, src1, len) \
317 APPEND_MATH(ADDC, desc, dest, src0, src1, len)
318 #define append_math_sub_b(desc, dest, src0, src1, len) \
319 APPEND_MATH(SUBB, desc, dest, src0, src1, len)
320 #define append_math_and(desc, dest, src0, src1, len) \
321 APPEND_MATH(AND, desc, dest, src0, src1, len)
322 #define append_math_or(desc, dest, src0, src1, len) \
323 APPEND_MATH(OR, desc, dest, src0, src1, len)
324 #define append_math_xor(desc, dest, src0, src1, len) \
325 APPEND_MATH(XOR, desc, dest, src0, src1, len)
326 #define append_math_lshift(desc, dest, src0, src1, len) \
327 APPEND_MATH(LSHIFT, desc, dest, src0, src1, len)
328 #define append_math_rshift(desc, dest, src0, src1, len) \
329 APPEND_MATH(RSHIFT, desc, dest, src0, src1, len)
330 #define append_math_ldshift(desc, dest, src0, src1, len) \
331 APPEND_MATH(SHLD, desc, dest, src0, src1, len)
332
333 /* Exactly one source is IMM. Data is passed in as u32 value */
334 #define APPEND_MATH_IMM_u32(op, desc, dest, src_0, src_1, data) \
335 do { \
336 APPEND_MATH(op, desc, dest, src_0, src_1, CAAM_CMD_SZ); \
337 append_cmd(desc, data); \
338 } while (0)
339
340 #define append_math_add_imm_u32(desc, dest, src0, src1, data) \
341 APPEND_MATH_IMM_u32(ADD, desc, dest, src0, src1, data)
342 #define append_math_sub_imm_u32(desc, dest, src0, src1, data) \
343 APPEND_MATH_IMM_u32(SUB, desc, dest, src0, src1, data)
344 #define append_math_add_c_imm_u32(desc, dest, src0, src1, data) \
345 APPEND_MATH_IMM_u32(ADDC, desc, dest, src0, src1, data)
346 #define append_math_sub_b_imm_u32(desc, dest, src0, src1, data) \
347 APPEND_MATH_IMM_u32(SUBB, desc, dest, src0, src1, data)
348 #define append_math_and_imm_u32(desc, dest, src0, src1, data) \
349 APPEND_MATH_IMM_u32(AND, desc, dest, src0, src1, data)
350 #define append_math_or_imm_u32(desc, dest, src0, src1, data) \
351 APPEND_MATH_IMM_u32(OR, desc, dest, src0, src1, data)
352 #define append_math_xor_imm_u32(desc, dest, src0, src1, data) \
353 APPEND_MATH_IMM_u32(XOR, desc, dest, src0, src1, data)
354 #define append_math_lshift_imm_u32(desc, dest, src0, src1, data) \
355 APPEND_MATH_IMM_u32(LSHIFT, desc, dest, src0, src1, data)
356 #define append_math_rshift_imm_u32(desc, dest, src0, src1, data) \
357 APPEND_MATH_IMM_u32(RSHIFT, desc, dest, src0, src1, data)
358
359 /* Exactly one source is IMM. Data is passed in as u64 value */
360 #define APPEND_MATH_IMM_u64(op, desc, dest, src_0, src_1, data) \
361 do { \
362 u32 upper = (data >> 16) >> 16; \
363 APPEND_MATH(op, desc, dest, src_0, src_1, CAAM_CMD_SZ * 2 | \
364 (upper ? 0 : MATH_IFB)); \
365 if (upper) \
366 append_u64(desc, data); \
367 else \
368 append_u32(desc, data); \
369 } while (0)
370
371 #define append_math_add_imm_u64(desc, dest, src0, src1, data) \
372 APPEND_MATH_IMM_u64(ADD, desc, dest, src0, src1, data)
373 #define append_math_sub_imm_u64(desc, dest, src0, src1, data) \
374 APPEND_MATH_IMM_u64(SUB, desc, dest, src0, src1, data)
375 #define append_math_add_c_imm_u64(desc, dest, src0, src1, data) \
376 APPEND_MATH_IMM_u64(ADDC, desc, dest, src0, src1, data)
377 #define append_math_sub_b_imm_u64(desc, dest, src0, src1, data) \
378 APPEND_MATH_IMM_u64(SUBB, desc, dest, src0, src1, data)
379 #define append_math_and_imm_u64(desc, dest, src0, src1, data) \
380 APPEND_MATH_IMM_u64(AND, desc, dest, src0, src1, data)
381 #define append_math_or_imm_u64(desc, dest, src0, src1, data) \
382 APPEND_MATH_IMM_u64(OR, desc, dest, src0, src1, data)
383 #define append_math_xor_imm_u64(desc, dest, src0, src1, data) \
384 APPEND_MATH_IMM_u64(XOR, desc, dest, src0, src1, data)
385 #define append_math_lshift_imm_u64(desc, dest, src0, src1, data) \
386 APPEND_MATH_IMM_u64(LSHIFT, desc, dest, src0, src1, data)
387 #define append_math_rshift_imm_u64(desc, dest, src0, src1, data) \
388 APPEND_MATH_IMM_u64(RSHIFT, desc, dest, src0, src1, data)
389