diff options
Diffstat (limited to 'kernel/drivers/crypto/caam/desc_constr.h')
| -rw-r--r-- | kernel/drivers/crypto/caam/desc_constr.h | 390 |
1 files changed, 390 insertions, 0 deletions
diff --git a/kernel/drivers/crypto/caam/desc_constr.h b/kernel/drivers/crypto/caam/desc_constr.h new file mode 100644 index 000000000..9f79fd7bd --- /dev/null +++ b/kernel/drivers/crypto/caam/desc_constr.h @@ -0,0 +1,390 @@ +/* + * caam descriptor construction helper functions + * + * Copyright 2008-2012 Freescale Semiconductor, Inc. + */ + +#include "desc.h" + +#define IMMEDIATE (1 << 23) +#define CAAM_CMD_SZ sizeof(u32) +#define CAAM_PTR_SZ sizeof(dma_addr_t) +#define CAAM_DESC_BYTES_MAX (CAAM_CMD_SZ * MAX_CAAM_DESCSIZE) +#define DESC_JOB_IO_LEN (CAAM_CMD_SZ * 5 + CAAM_PTR_SZ * 3) + +#ifdef DEBUG +#define PRINT_POS do { printk(KERN_DEBUG "%02d: %s\n", desc_len(desc),\ + &__func__[sizeof("append")]); } while (0) +#else +#define PRINT_POS +#endif + +#define SET_OK_NO_PROP_ERRORS (IMMEDIATE | LDST_CLASS_DECO | \ + LDST_SRCDST_WORD_DECOCTRL | \ + (LDOFF_CHG_SHARE_OK_NO_PROP << \ + LDST_OFFSET_SHIFT)) +#define DISABLE_AUTO_INFO_FIFO (IMMEDIATE | LDST_CLASS_DECO | \ + LDST_SRCDST_WORD_DECOCTRL | \ + (LDOFF_DISABLE_AUTO_NFIFO << LDST_OFFSET_SHIFT)) +#define ENABLE_AUTO_INFO_FIFO (IMMEDIATE | LDST_CLASS_DECO | \ + LDST_SRCDST_WORD_DECOCTRL | \ + (LDOFF_ENABLE_AUTO_NFIFO << LDST_OFFSET_SHIFT)) + +static inline int desc_len(u32 *desc) +{ + return *desc & HDR_DESCLEN_MASK; +} + +static inline int desc_bytes(void *desc) +{ + return desc_len(desc) * CAAM_CMD_SZ; +} + +static inline u32 *desc_end(u32 *desc) +{ + return desc + desc_len(desc); +} + +static inline void *sh_desc_pdb(u32 *desc) +{ + return desc + 1; +} + +static inline void init_desc(u32 *desc, u32 options) +{ + *desc = (options | HDR_ONE) + 1; +} + +static inline void init_sh_desc(u32 *desc, u32 options) +{ + PRINT_POS; + init_desc(desc, CMD_SHARED_DESC_HDR | options); +} + +static inline void init_sh_desc_pdb(u32 *desc, u32 options, size_t pdb_bytes) +{ + u32 pdb_len = (pdb_bytes + CAAM_CMD_SZ - 1) / CAAM_CMD_SZ; + + init_sh_desc(desc, (((pdb_len + 1) << HDR_START_IDX_SHIFT) + pdb_len) | + options); +} + +static inline void init_job_desc(u32 *desc, u32 options) +{ + init_desc(desc, CMD_DESC_HDR | options); +} + +static inline void append_ptr(u32 *desc, dma_addr_t ptr) +{ + dma_addr_t *offset = (dma_addr_t *)desc_end(desc); + + *offset = ptr; + + (*desc) += CAAM_PTR_SZ / CAAM_CMD_SZ; +} + +static inline void init_job_desc_shared(u32 *desc, dma_addr_t ptr, int len, + u32 options) +{ + PRINT_POS; + init_job_desc(desc, HDR_SHARED | options | + (len << HDR_START_IDX_SHIFT)); + append_ptr(desc, ptr); +} + +static inline void append_data(u32 *desc, void *data, int len) +{ + u32 *offset = desc_end(desc); + + if (len) /* avoid sparse warning: memcpy with byte count of 0 */ + memcpy(offset, data, len); + + (*desc) += (len + CAAM_CMD_SZ - 1) / CAAM_CMD_SZ; +} + +static inline void append_cmd(u32 *desc, u32 command) +{ + u32 *cmd = desc_end(desc); + + *cmd = command; + + (*desc)++; +} + +#define append_u32 append_cmd + +static inline void append_u64(u32 *desc, u64 data) +{ + u32 *offset = desc_end(desc); + + *offset = upper_32_bits(data); + *(++offset) = lower_32_bits(data); + + (*desc) += 2; +} + +/* Write command without affecting header, and return pointer to next word */ +static inline u32 *write_cmd(u32 *desc, u32 command) +{ + *desc = command; + + return desc + 1; +} + +static inline void append_cmd_ptr(u32 *desc, dma_addr_t ptr, int len, + u32 command) +{ + append_cmd(desc, command | len); + append_ptr(desc, ptr); +} + +/* Write length after pointer, rather than inside command */ +static inline void append_cmd_ptr_extlen(u32 *desc, dma_addr_t ptr, + unsigned int len, u32 command) +{ + append_cmd(desc, command); + if (!(command & (SQIN_RTO | SQIN_PRE))) + append_ptr(desc, ptr); + append_cmd(desc, len); +} + +static inline void append_cmd_data(u32 *desc, void *data, int len, + u32 command) +{ + append_cmd(desc, command | IMMEDIATE | len); + append_data(desc, data, len); +} + +#define APPEND_CMD_RET(cmd, op) \ +static inline u32 *append_##cmd(u32 *desc, u32 options) \ +{ \ + u32 *cmd = desc_end(desc); \ + PRINT_POS; \ + append_cmd(desc, CMD_##op | options); \ + return cmd; \ +} +APPEND_CMD_RET(jump, JUMP) +APPEND_CMD_RET(move, MOVE) + +static inline void set_jump_tgt_here(u32 *desc, u32 *jump_cmd) +{ + *jump_cmd = *jump_cmd | (desc_len(desc) - (jump_cmd - desc)); +} + +static inline void set_move_tgt_here(u32 *desc, u32 *move_cmd) +{ + *move_cmd &= ~MOVE_OFFSET_MASK; + *move_cmd = *move_cmd | ((desc_len(desc) << (MOVE_OFFSET_SHIFT + 2)) & + MOVE_OFFSET_MASK); +} + +#define APPEND_CMD(cmd, op) \ +static inline void append_##cmd(u32 *desc, u32 options) \ +{ \ + PRINT_POS; \ + append_cmd(desc, CMD_##op | options); \ +} +APPEND_CMD(operation, OPERATION) + +#define APPEND_CMD_LEN(cmd, op) \ +static inline void append_##cmd(u32 *desc, unsigned int len, u32 options) \ +{ \ + PRINT_POS; \ + append_cmd(desc, CMD_##op | len | options); \ +} + +APPEND_CMD_LEN(seq_load, SEQ_LOAD) +APPEND_CMD_LEN(seq_store, SEQ_STORE) +APPEND_CMD_LEN(seq_fifo_load, SEQ_FIFO_LOAD) +APPEND_CMD_LEN(seq_fifo_store, SEQ_FIFO_STORE) + +#define APPEND_CMD_PTR(cmd, op) \ +static inline void append_##cmd(u32 *desc, dma_addr_t ptr, unsigned int len, \ + u32 options) \ +{ \ + PRINT_POS; \ + append_cmd_ptr(desc, ptr, len, CMD_##op | options); \ +} +APPEND_CMD_PTR(key, KEY) +APPEND_CMD_PTR(load, LOAD) +APPEND_CMD_PTR(fifo_load, FIFO_LOAD) +APPEND_CMD_PTR(fifo_store, FIFO_STORE) + +static inline void append_store(u32 *desc, dma_addr_t ptr, unsigned int len, + u32 options) +{ + u32 cmd_src; + + cmd_src = options & LDST_SRCDST_MASK; + + append_cmd(desc, CMD_STORE | options | len); + + /* The following options do not require pointer */ + if (!(cmd_src == LDST_SRCDST_WORD_DESCBUF_SHARED || + cmd_src == LDST_SRCDST_WORD_DESCBUF_JOB || + cmd_src == LDST_SRCDST_WORD_DESCBUF_JOB_WE || + cmd_src == LDST_SRCDST_WORD_DESCBUF_SHARED_WE)) + append_ptr(desc, ptr); +} + +#define APPEND_SEQ_PTR_INTLEN(cmd, op) \ +static inline void append_seq_##cmd##_ptr_intlen(u32 *desc, dma_addr_t ptr, \ + unsigned int len, \ + u32 options) \ +{ \ + PRINT_POS; \ + if (options & (SQIN_RTO | SQIN_PRE)) \ + append_cmd(desc, CMD_SEQ_##op##_PTR | len | options); \ + else \ + append_cmd_ptr(desc, ptr, len, CMD_SEQ_##op##_PTR | options); \ +} +APPEND_SEQ_PTR_INTLEN(in, IN) +APPEND_SEQ_PTR_INTLEN(out, OUT) + +#define APPEND_CMD_PTR_TO_IMM(cmd, op) \ +static inline void append_##cmd##_as_imm(u32 *desc, void *data, \ + unsigned int len, u32 options) \ +{ \ + PRINT_POS; \ + append_cmd_data(desc, data, len, CMD_##op | options); \ +} +APPEND_CMD_PTR_TO_IMM(load, LOAD); +APPEND_CMD_PTR_TO_IMM(fifo_load, FIFO_LOAD); + +#define APPEND_CMD_PTR_EXTLEN(cmd, op) \ +static inline void append_##cmd##_extlen(u32 *desc, dma_addr_t ptr, \ + unsigned int len, u32 options) \ +{ \ + PRINT_POS; \ + append_cmd_ptr_extlen(desc, ptr, len, CMD_##op | SQIN_EXT | options); \ +} +APPEND_CMD_PTR_EXTLEN(seq_in_ptr, SEQ_IN_PTR) +APPEND_CMD_PTR_EXTLEN(seq_out_ptr, SEQ_OUT_PTR) + +/* + * Determine whether to store length internally or externally depending on + * the size of its type + */ +#define APPEND_CMD_PTR_LEN(cmd, op, type) \ +static inline void append_##cmd(u32 *desc, dma_addr_t ptr, \ + type len, u32 options) \ +{ \ + PRINT_POS; \ + if (sizeof(type) > sizeof(u16)) \ + append_##cmd##_extlen(desc, ptr, len, options); \ + else \ + append_##cmd##_intlen(desc, ptr, len, options); \ +} +APPEND_CMD_PTR_LEN(seq_in_ptr, SEQ_IN_PTR, u32) +APPEND_CMD_PTR_LEN(seq_out_ptr, SEQ_OUT_PTR, u32) + +/* + * 2nd variant for commands whose specified immediate length differs + * from length of immediate data provided, e.g., split keys + */ +#define APPEND_CMD_PTR_TO_IMM2(cmd, op) \ +static inline void append_##cmd##_as_imm(u32 *desc, void *data, \ + unsigned int data_len, \ + unsigned int len, u32 options) \ +{ \ + PRINT_POS; \ + append_cmd(desc, CMD_##op | IMMEDIATE | len | options); \ + append_data(desc, data, data_len); \ +} +APPEND_CMD_PTR_TO_IMM2(key, KEY); + +#define APPEND_CMD_RAW_IMM(cmd, op, type) \ +static inline void append_##cmd##_imm_##type(u32 *desc, type immediate, \ + u32 options) \ +{ \ + PRINT_POS; \ + append_cmd(desc, CMD_##op | IMMEDIATE | options | sizeof(type)); \ + append_cmd(desc, immediate); \ +} +APPEND_CMD_RAW_IMM(load, LOAD, u32); + +/* + * Append math command. Only the last part of destination and source need to + * be specified + */ +#define APPEND_MATH(op, desc, dest, src_0, src_1, len) \ +append_cmd(desc, CMD_MATH | MATH_FUN_##op | MATH_DEST_##dest | \ + MATH_SRC0_##src_0 | MATH_SRC1_##src_1 | (u32)len); + +#define append_math_add(desc, dest, src0, src1, len) \ + APPEND_MATH(ADD, desc, dest, src0, src1, len) +#define append_math_sub(desc, dest, src0, src1, len) \ + APPEND_MATH(SUB, desc, dest, src0, src1, len) +#define append_math_add_c(desc, dest, src0, src1, len) \ + APPEND_MATH(ADDC, desc, dest, src0, src1, len) +#define append_math_sub_b(desc, dest, src0, src1, len) \ + APPEND_MATH(SUBB, desc, dest, src0, src1, len) +#define append_math_and(desc, dest, src0, src1, len) \ + APPEND_MATH(AND, desc, dest, src0, src1, len) +#define append_math_or(desc, dest, src0, src1, len) \ + APPEND_MATH(OR, desc, dest, src0, src1, len) +#define append_math_xor(desc, dest, src0, src1, len) \ + APPEND_MATH(XOR, desc, dest, src0, src1, len) +#define append_math_lshift(desc, dest, src0, src1, len) \ + APPEND_MATH(LSHIFT, desc, dest, src0, src1, len) +#define append_math_rshift(desc, dest, src0, src1, len) \ + APPEND_MATH(RSHIFT, desc, dest, src0, src1, len) +#define append_math_ldshift(desc, dest, src0, src1, len) \ + APPEND_MATH(SHLD, desc, dest, src0, src1, len) + +/* Exactly one source is IMM. Data is passed in as u32 value */ +#define APPEND_MATH_IMM_u32(op, desc, dest, src_0, src_1, data) \ +do { \ + APPEND_MATH(op, desc, dest, src_0, src_1, CAAM_CMD_SZ); \ + append_cmd(desc, data); \ +} while (0) + +#define append_math_add_imm_u32(desc, dest, src0, src1, data) \ + APPEND_MATH_IMM_u32(ADD, desc, dest, src0, src1, data) +#define append_math_sub_imm_u32(desc, dest, src0, src1, data) \ + APPEND_MATH_IMM_u32(SUB, desc, dest, src0, src1, data) +#define append_math_add_c_imm_u32(desc, dest, src0, src1, data) \ + APPEND_MATH_IMM_u32(ADDC, desc, dest, src0, src1, data) +#define append_math_sub_b_imm_u32(desc, dest, src0, src1, data) \ + APPEND_MATH_IMM_u32(SUBB, desc, dest, src0, src1, data) +#define append_math_and_imm_u32(desc, dest, src0, src1, data) \ + APPEND_MATH_IMM_u32(AND, desc, dest, src0, src1, data) +#define append_math_or_imm_u32(desc, dest, src0, src1, data) \ + APPEND_MATH_IMM_u32(OR, desc, dest, src0, src1, data) +#define append_math_xor_imm_u32(desc, dest, src0, src1, data) \ + APPEND_MATH_IMM_u32(XOR, desc, dest, src0, src1, data) +#define append_math_lshift_imm_u32(desc, dest, src0, src1, data) \ + APPEND_MATH_IMM_u32(LSHIFT, desc, dest, src0, src1, data) +#define append_math_rshift_imm_u32(desc, dest, src0, src1, data) \ + APPEND_MATH_IMM_u32(RSHIFT, desc, dest, src0, src1, data) + +/* Exactly one source is IMM. Data is passed in as u64 value */ +#define APPEND_MATH_IMM_u64(op, desc, dest, src_0, src_1, data) \ +do { \ + u32 upper = (data >> 16) >> 16; \ + APPEND_MATH(op, desc, dest, src_0, src_1, CAAM_CMD_SZ * 2 | \ + (upper ? 0 : MATH_IFB)); \ + if (upper) \ + append_u64(desc, data); \ + else \ + append_u32(desc, data); \ +} while (0) + +#define append_math_add_imm_u64(desc, dest, src0, src1, data) \ + APPEND_MATH_IMM_u64(ADD, desc, dest, src0, src1, data) +#define append_math_sub_imm_u64(desc, dest, src0, src1, data) \ + APPEND_MATH_IMM_u64(SUB, desc, dest, src0, src1, data) +#define append_math_add_c_imm_u64(desc, dest, src0, src1, data) \ + APPEND_MATH_IMM_u64(ADDC, desc, dest, src0, src1, data) +#define append_math_sub_b_imm_u64(desc, dest, src0, src1, data) \ + APPEND_MATH_IMM_u64(SUBB, desc, dest, src0, src1, data) +#define append_math_and_imm_u64(desc, dest, src0, src1, data) \ + APPEND_MATH_IMM_u64(AND, desc, dest, src0, src1, data) +#define append_math_or_imm_u64(desc, dest, src0, src1, data) \ + APPEND_MATH_IMM_u64(OR, desc, dest, src0, src1, data) +#define append_math_xor_imm_u64(desc, dest, src0, src1, data) \ + APPEND_MATH_IMM_u64(XOR, desc, dest, src0, src1, data) +#define append_math_lshift_imm_u64(desc, dest, src0, src1, data) \ + APPEND_MATH_IMM_u64(LSHIFT, desc, dest, src0, src1, data) +#define append_math_rshift_imm_u64(desc, dest, src0, src1, data) \ + APPEND_MATH_IMM_u64(RSHIFT, desc, dest, src0, src1, data) |