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8e8ec596 KP |
1 | /* |
2 | * caam descriptor construction helper functions | |
3 | * | |
4 | * Copyright 2008-2011 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) | |
1acebad3 | 12 | #define CAAM_DESC_BYTES_MAX (CAAM_CMD_SZ * MAX_CAAM_DESCSIZE) |
8e8ec596 KP |
13 | |
14 | #ifdef DEBUG | |
15 | #define PRINT_POS do { printk(KERN_DEBUG "%02d: %s\n", desc_len(desc),\ | |
16 | &__func__[sizeof("append")]); } while (0) | |
17 | #else | |
18 | #define PRINT_POS | |
19 | #endif | |
20 | ||
a2ecb155 KP |
21 | #define SET_OK_NO_PROP_ERRORS (IMMEDIATE | LDST_CLASS_DECO | \ |
22 | LDST_SRCDST_WORD_DECOCTRL | \ | |
23 | (LDOFF_CHG_SHARE_OK_NO_PROP << \ | |
24 | LDST_OFFSET_SHIFT)) | |
8e8ec596 KP |
25 | #define DISABLE_AUTO_INFO_FIFO (IMMEDIATE | LDST_CLASS_DECO | \ |
26 | LDST_SRCDST_WORD_DECOCTRL | \ | |
27 | (LDOFF_DISABLE_AUTO_NFIFO << LDST_OFFSET_SHIFT)) | |
28 | #define ENABLE_AUTO_INFO_FIFO (IMMEDIATE | LDST_CLASS_DECO | \ | |
29 | LDST_SRCDST_WORD_DECOCTRL | \ | |
30 | (LDOFF_ENABLE_AUTO_NFIFO << LDST_OFFSET_SHIFT)) | |
31 | ||
32 | static inline int desc_len(u32 *desc) | |
33 | { | |
34 | return *desc & HDR_DESCLEN_MASK; | |
35 | } | |
36 | ||
37 | static inline int desc_bytes(void *desc) | |
38 | { | |
39 | return desc_len(desc) * CAAM_CMD_SZ; | |
40 | } | |
41 | ||
42 | static inline u32 *desc_end(u32 *desc) | |
43 | { | |
44 | return desc + desc_len(desc); | |
45 | } | |
46 | ||
47 | static inline void *sh_desc_pdb(u32 *desc) | |
48 | { | |
49 | return desc + 1; | |
50 | } | |
51 | ||
52 | static inline void init_desc(u32 *desc, u32 options) | |
53 | { | |
54 | *desc = options | HDR_ONE | 1; | |
55 | } | |
56 | ||
57 | static inline void init_sh_desc(u32 *desc, u32 options) | |
58 | { | |
59 | PRINT_POS; | |
60 | init_desc(desc, CMD_SHARED_DESC_HDR | options); | |
61 | } | |
62 | ||
63 | static inline void init_sh_desc_pdb(u32 *desc, u32 options, size_t pdb_bytes) | |
64 | { | |
65 | u32 pdb_len = pdb_bytes / CAAM_CMD_SZ + 1; | |
66 | ||
67 | init_sh_desc(desc, ((pdb_len << HDR_START_IDX_SHIFT) + pdb_len) | | |
68 | options); | |
69 | } | |
70 | ||
71 | static inline void init_job_desc(u32 *desc, u32 options) | |
72 | { | |
73 | init_desc(desc, CMD_DESC_HDR | options); | |
74 | } | |
75 | ||
76 | static inline void append_ptr(u32 *desc, dma_addr_t ptr) | |
77 | { | |
78 | dma_addr_t *offset = (dma_addr_t *)desc_end(desc); | |
79 | ||
80 | *offset = ptr; | |
81 | ||
82 | (*desc) += CAAM_PTR_SZ / CAAM_CMD_SZ; | |
83 | } | |
84 | ||
85 | static inline void init_job_desc_shared(u32 *desc, dma_addr_t ptr, int len, | |
86 | u32 options) | |
87 | { | |
88 | PRINT_POS; | |
89 | init_job_desc(desc, HDR_SHARED | options | | |
90 | (len << HDR_START_IDX_SHIFT)); | |
91 | append_ptr(desc, ptr); | |
92 | } | |
93 | ||
94 | static inline void append_data(u32 *desc, void *data, int len) | |
95 | { | |
96 | u32 *offset = desc_end(desc); | |
97 | ||
98 | if (len) /* avoid sparse warning: memcpy with byte count of 0 */ | |
99 | memcpy(offset, data, len); | |
100 | ||
101 | (*desc) += (len + CAAM_CMD_SZ - 1) / CAAM_CMD_SZ; | |
102 | } | |
103 | ||
104 | static inline void append_cmd(u32 *desc, u32 command) | |
105 | { | |
106 | u32 *cmd = desc_end(desc); | |
107 | ||
108 | *cmd = command; | |
109 | ||
110 | (*desc)++; | |
111 | } | |
112 | ||
113 | static inline void append_cmd_ptr(u32 *desc, dma_addr_t ptr, int len, | |
114 | u32 command) | |
115 | { | |
116 | append_cmd(desc, command | len); | |
117 | append_ptr(desc, ptr); | |
118 | } | |
119 | ||
120 | static inline void append_cmd_data(u32 *desc, void *data, int len, | |
121 | u32 command) | |
122 | { | |
123 | append_cmd(desc, command | IMMEDIATE | len); | |
124 | append_data(desc, data, len); | |
125 | } | |
126 | ||
127 | static inline u32 *append_jump(u32 *desc, u32 options) | |
128 | { | |
129 | u32 *cmd = desc_end(desc); | |
130 | ||
131 | PRINT_POS; | |
132 | append_cmd(desc, CMD_JUMP | options); | |
133 | ||
134 | return cmd; | |
135 | } | |
136 | ||
137 | static inline void set_jump_tgt_here(u32 *desc, u32 *jump_cmd) | |
138 | { | |
139 | *jump_cmd = *jump_cmd | (desc_len(desc) - (jump_cmd - desc)); | |
140 | } | |
141 | ||
142 | #define APPEND_CMD(cmd, op) \ | |
143 | static inline void append_##cmd(u32 *desc, u32 options) \ | |
144 | { \ | |
145 | PRINT_POS; \ | |
146 | append_cmd(desc, CMD_##op | options); \ | |
147 | } | |
148 | APPEND_CMD(operation, OPERATION) | |
149 | APPEND_CMD(move, MOVE) | |
150 | ||
151 | #define APPEND_CMD_LEN(cmd, op) \ | |
152 | static inline void append_##cmd(u32 *desc, unsigned int len, u32 options) \ | |
153 | { \ | |
154 | PRINT_POS; \ | |
155 | append_cmd(desc, CMD_##op | len | options); \ | |
156 | } | |
157 | APPEND_CMD_LEN(seq_store, SEQ_STORE) | |
158 | APPEND_CMD_LEN(seq_fifo_load, SEQ_FIFO_LOAD) | |
159 | APPEND_CMD_LEN(seq_fifo_store, SEQ_FIFO_STORE) | |
160 | ||
161 | #define APPEND_CMD_PTR(cmd, op) \ | |
162 | static inline void append_##cmd(u32 *desc, dma_addr_t ptr, unsigned int len, \ | |
163 | u32 options) \ | |
164 | { \ | |
165 | PRINT_POS; \ | |
166 | append_cmd_ptr(desc, ptr, len, CMD_##op | options); \ | |
167 | } | |
168 | APPEND_CMD_PTR(key, KEY) | |
169 | APPEND_CMD_PTR(seq_in_ptr, SEQ_IN_PTR) | |
170 | APPEND_CMD_PTR(seq_out_ptr, SEQ_OUT_PTR) | |
171 | APPEND_CMD_PTR(load, LOAD) | |
172 | APPEND_CMD_PTR(store, STORE) | |
173 | APPEND_CMD_PTR(fifo_load, FIFO_LOAD) | |
174 | APPEND_CMD_PTR(fifo_store, FIFO_STORE) | |
175 | ||
176 | #define APPEND_CMD_PTR_TO_IMM(cmd, op) \ | |
177 | static inline void append_##cmd##_as_imm(u32 *desc, void *data, \ | |
178 | unsigned int len, u32 options) \ | |
179 | { \ | |
180 | PRINT_POS; \ | |
181 | append_cmd_data(desc, data, len, CMD_##op | options); \ | |
182 | } | |
183 | APPEND_CMD_PTR_TO_IMM(load, LOAD); | |
184 | APPEND_CMD_PTR_TO_IMM(fifo_load, FIFO_LOAD); | |
185 | ||
186 | /* | |
187 | * 2nd variant for commands whose specified immediate length differs | |
188 | * from length of immediate data provided, e.g., split keys | |
189 | */ | |
190 | #define APPEND_CMD_PTR_TO_IMM2(cmd, op) \ | |
191 | static inline void append_##cmd##_as_imm(u32 *desc, void *data, \ | |
192 | unsigned int data_len, \ | |
193 | unsigned int len, u32 options) \ | |
194 | { \ | |
195 | PRINT_POS; \ | |
196 | append_cmd(desc, CMD_##op | IMMEDIATE | len | options); \ | |
197 | append_data(desc, data, data_len); \ | |
198 | } | |
199 | APPEND_CMD_PTR_TO_IMM2(key, KEY); | |
200 | ||
201 | #define APPEND_CMD_RAW_IMM(cmd, op, type) \ | |
202 | static inline void append_##cmd##_imm_##type(u32 *desc, type immediate, \ | |
203 | u32 options) \ | |
204 | { \ | |
205 | PRINT_POS; \ | |
206 | append_cmd(desc, CMD_##op | IMMEDIATE | options | sizeof(type)); \ | |
207 | append_cmd(desc, immediate); \ | |
208 | } | |
209 | APPEND_CMD_RAW_IMM(load, LOAD, u32); | |
1acebad3 YK |
210 | |
211 | /* | |
212 | * Append math command. Only the last part of destination and source need to | |
213 | * be specified | |
214 | */ | |
215 | #define APPEND_MATH(op, desc, dest, src_0, src_1, len) \ | |
216 | append_cmd(desc, CMD_MATH | MATH_FUN_##op | MATH_DEST_##dest | \ | |
217 | MATH_SRC0_##src_0 | MATH_SRC1_##src_1 | (u32) (len & MATH_LEN_MASK)); | |
218 | ||
219 | #define append_math_add(desc, dest, src0, src1, len) \ | |
220 | APPEND_MATH(ADD, desc, dest, src0, src1, len) | |
221 | #define append_math_sub(desc, dest, src0, src1, len) \ | |
222 | APPEND_MATH(SUB, desc, dest, src0, src1, len) | |
223 | #define append_math_add_c(desc, dest, src0, src1, len) \ | |
224 | APPEND_MATH(ADDC, desc, dest, src0, src1, len) | |
225 | #define append_math_sub_b(desc, dest, src0, src1, len) \ | |
226 | APPEND_MATH(SUBB, desc, dest, src0, src1, len) | |
227 | #define append_math_and(desc, dest, src0, src1, len) \ | |
228 | APPEND_MATH(AND, desc, dest, src0, src1, len) | |
229 | #define append_math_or(desc, dest, src0, src1, len) \ | |
230 | APPEND_MATH(OR, desc, dest, src0, src1, len) | |
231 | #define append_math_xor(desc, dest, src0, src1, len) \ | |
232 | APPEND_MATH(XOR, desc, dest, src0, src1, len) | |
233 | #define append_math_lshift(desc, dest, src0, src1, len) \ | |
234 | APPEND_MATH(LSHIFT, desc, dest, src0, src1, len) | |
235 | #define append_math_rshift(desc, dest, src0, src1, len) \ | |
236 | APPEND_MATH(RSHIFT, desc, dest, src0, src1, len) | |
237 | ||
238 | /* Exactly one source is IMM. Data is passed in as u32 value */ | |
239 | #define APPEND_MATH_IMM_u32(op, desc, dest, src_0, src_1, data) \ | |
240 | do { \ | |
241 | APPEND_MATH(op, desc, dest, src_0, src_1, CAAM_CMD_SZ); \ | |
242 | append_cmd(desc, data); \ | |
243 | } while (0); | |
244 | ||
245 | #define append_math_add_imm_u32(desc, dest, src0, src1, data) \ | |
246 | APPEND_MATH_IMM_u32(ADD, desc, dest, src0, src1, data) | |
247 | #define append_math_sub_imm_u32(desc, dest, src0, src1, data) \ | |
248 | APPEND_MATH_IMM_u32(SUB, desc, dest, src0, src1, data) | |
249 | #define append_math_add_c_imm_u32(desc, dest, src0, src1, data) \ | |
250 | APPEND_MATH_IMM_u32(ADDC, desc, dest, src0, src1, data) | |
251 | #define append_math_sub_b_imm_u32(desc, dest, src0, src1, data) \ | |
252 | APPEND_MATH_IMM_u32(SUBB, desc, dest, src0, src1, data) | |
253 | #define append_math_and_imm_u32(desc, dest, src0, src1, data) \ | |
254 | APPEND_MATH_IMM_u32(AND, desc, dest, src0, src1, data) | |
255 | #define append_math_or_imm_u32(desc, dest, src0, src1, data) \ | |
256 | APPEND_MATH_IMM_u32(OR, desc, dest, src0, src1, data) | |
257 | #define append_math_xor_imm_u32(desc, dest, src0, src1, data) \ | |
258 | APPEND_MATH_IMM_u32(XOR, desc, dest, src0, src1, data) | |
259 | #define append_math_lshift_imm_u32(desc, dest, src0, src1, data) \ | |
260 | APPEND_MATH_IMM_u32(LSHIFT, desc, dest, src0, src1, data) | |
261 | #define append_math_rshift_imm_u32(desc, dest, src0, src1, data) \ | |
262 | APPEND_MATH_IMM_u32(RSHIFT, desc, dest, src0, src1, data) |