262 lines
7.5 KiB
C
262 lines
7.5 KiB
C
/*
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* caam descriptor construction helper functions
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*
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* Copyright 2008-2011 Freescale Semiconductor, Inc.
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*/
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#include "desc.h"
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#define IMMEDIATE (1 << 23)
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#define CAAM_CMD_SZ sizeof(u32)
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#define CAAM_PTR_SZ sizeof(dma_addr_t)
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#define CAAM_DESC_BYTES_MAX (CAAM_CMD_SZ * MAX_CAAM_DESCSIZE)
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#ifdef DEBUG
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#define PRINT_POS do { printk(KERN_DEBUG "%02d: %s\n", desc_len(desc),\
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&__func__[sizeof("append")]); } while (0)
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#else
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#define PRINT_POS
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#endif
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#define SET_OK_PROP_ERRORS (IMMEDIATE | LDST_CLASS_DECO | \
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LDST_SRCDST_WORD_DECOCTRL | \
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(LDOFF_CHG_SHARE_OK_PROP << LDST_OFFSET_SHIFT))
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#define DISABLE_AUTO_INFO_FIFO (IMMEDIATE | LDST_CLASS_DECO | \
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LDST_SRCDST_WORD_DECOCTRL | \
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(LDOFF_DISABLE_AUTO_NFIFO << LDST_OFFSET_SHIFT))
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#define ENABLE_AUTO_INFO_FIFO (IMMEDIATE | LDST_CLASS_DECO | \
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LDST_SRCDST_WORD_DECOCTRL | \
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(LDOFF_ENABLE_AUTO_NFIFO << LDST_OFFSET_SHIFT))
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static inline int desc_len(u32 *desc)
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{
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return *desc & HDR_DESCLEN_MASK;
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}
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static inline int desc_bytes(void *desc)
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{
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return desc_len(desc) * CAAM_CMD_SZ;
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}
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static inline u32 *desc_end(u32 *desc)
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{
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return desc + desc_len(desc);
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}
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static inline void *sh_desc_pdb(u32 *desc)
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{
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return desc + 1;
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}
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static inline void init_desc(u32 *desc, u32 options)
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{
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*desc = options | HDR_ONE | 1;
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}
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static inline void init_sh_desc(u32 *desc, u32 options)
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{
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PRINT_POS;
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init_desc(desc, CMD_SHARED_DESC_HDR | options);
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}
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static inline void init_sh_desc_pdb(u32 *desc, u32 options, size_t pdb_bytes)
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{
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u32 pdb_len = pdb_bytes / CAAM_CMD_SZ + 1;
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init_sh_desc(desc, ((pdb_len << HDR_START_IDX_SHIFT) + pdb_len) |
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options);
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}
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static inline void init_job_desc(u32 *desc, u32 options)
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{
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init_desc(desc, CMD_DESC_HDR | options);
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}
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static inline void append_ptr(u32 *desc, dma_addr_t ptr)
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{
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dma_addr_t *offset = (dma_addr_t *)desc_end(desc);
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*offset = ptr;
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(*desc) += CAAM_PTR_SZ / CAAM_CMD_SZ;
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}
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static inline void init_job_desc_shared(u32 *desc, dma_addr_t ptr, int len,
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u32 options)
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{
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PRINT_POS;
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init_job_desc(desc, HDR_SHARED | options |
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(len << HDR_START_IDX_SHIFT));
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append_ptr(desc, ptr);
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}
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static inline void append_data(u32 *desc, void *data, int len)
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{
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u32 *offset = desc_end(desc);
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if (len) /* avoid sparse warning: memcpy with byte count of 0 */
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memcpy(offset, data, len);
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(*desc) += (len + CAAM_CMD_SZ - 1) / CAAM_CMD_SZ;
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}
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static inline void append_cmd(u32 *desc, u32 command)
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{
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u32 *cmd = desc_end(desc);
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*cmd = command;
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(*desc)++;
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}
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static inline void append_cmd_ptr(u32 *desc, dma_addr_t ptr, int len,
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u32 command)
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{
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append_cmd(desc, command | len);
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append_ptr(desc, ptr);
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}
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static inline void append_cmd_data(u32 *desc, void *data, int len,
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u32 command)
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{
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append_cmd(desc, command | IMMEDIATE | len);
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append_data(desc, data, len);
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}
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static inline u32 *append_jump(u32 *desc, u32 options)
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{
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u32 *cmd = desc_end(desc);
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PRINT_POS;
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append_cmd(desc, CMD_JUMP | options);
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return cmd;
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}
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static inline void set_jump_tgt_here(u32 *desc, u32 *jump_cmd)
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{
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*jump_cmd = *jump_cmd | (desc_len(desc) - (jump_cmd - desc));
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}
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#define APPEND_CMD(cmd, op) \
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static inline void append_##cmd(u32 *desc, u32 options) \
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{ \
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PRINT_POS; \
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append_cmd(desc, CMD_##op | options); \
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}
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APPEND_CMD(operation, OPERATION)
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APPEND_CMD(move, MOVE)
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#define APPEND_CMD_LEN(cmd, op) \
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static inline void append_##cmd(u32 *desc, unsigned int len, u32 options) \
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{ \
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PRINT_POS; \
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append_cmd(desc, CMD_##op | len | options); \
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}
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APPEND_CMD_LEN(seq_store, SEQ_STORE)
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APPEND_CMD_LEN(seq_fifo_load, SEQ_FIFO_LOAD)
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APPEND_CMD_LEN(seq_fifo_store, SEQ_FIFO_STORE)
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#define APPEND_CMD_PTR(cmd, op) \
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static inline void append_##cmd(u32 *desc, dma_addr_t ptr, unsigned int len, \
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u32 options) \
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{ \
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PRINT_POS; \
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append_cmd_ptr(desc, ptr, len, CMD_##op | options); \
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}
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APPEND_CMD_PTR(key, KEY)
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APPEND_CMD_PTR(seq_in_ptr, SEQ_IN_PTR)
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APPEND_CMD_PTR(seq_out_ptr, SEQ_OUT_PTR)
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APPEND_CMD_PTR(load, LOAD)
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APPEND_CMD_PTR(store, STORE)
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APPEND_CMD_PTR(fifo_load, FIFO_LOAD)
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APPEND_CMD_PTR(fifo_store, FIFO_STORE)
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#define APPEND_CMD_PTR_TO_IMM(cmd, op) \
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static inline void append_##cmd##_as_imm(u32 *desc, void *data, \
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unsigned int len, u32 options) \
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{ \
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PRINT_POS; \
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append_cmd_data(desc, data, len, CMD_##op | options); \
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}
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APPEND_CMD_PTR_TO_IMM(load, LOAD);
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APPEND_CMD_PTR_TO_IMM(fifo_load, FIFO_LOAD);
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/*
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* 2nd variant for commands whose specified immediate length differs
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* from length of immediate data provided, e.g., split keys
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*/
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#define APPEND_CMD_PTR_TO_IMM2(cmd, op) \
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static inline void append_##cmd##_as_imm(u32 *desc, void *data, \
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unsigned int data_len, \
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unsigned int len, u32 options) \
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{ \
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PRINT_POS; \
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append_cmd(desc, CMD_##op | IMMEDIATE | len | options); \
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append_data(desc, data, data_len); \
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}
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APPEND_CMD_PTR_TO_IMM2(key, KEY);
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#define APPEND_CMD_RAW_IMM(cmd, op, type) \
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static inline void append_##cmd##_imm_##type(u32 *desc, type immediate, \
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u32 options) \
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{ \
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PRINT_POS; \
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append_cmd(desc, CMD_##op | IMMEDIATE | options | sizeof(type)); \
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append_cmd(desc, immediate); \
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}
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APPEND_CMD_RAW_IMM(load, LOAD, u32);
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/*
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* Append math command. Only the last part of destination and source need to
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* be specified
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*/
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#define APPEND_MATH(op, desc, dest, src_0, src_1, len) \
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append_cmd(desc, CMD_MATH | MATH_FUN_##op | MATH_DEST_##dest | \
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MATH_SRC0_##src_0 | MATH_SRC1_##src_1 | (u32) (len & MATH_LEN_MASK));
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#define append_math_add(desc, dest, src0, src1, len) \
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APPEND_MATH(ADD, desc, dest, src0, src1, len)
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#define append_math_sub(desc, dest, src0, src1, len) \
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APPEND_MATH(SUB, desc, dest, src0, src1, len)
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#define append_math_add_c(desc, dest, src0, src1, len) \
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APPEND_MATH(ADDC, desc, dest, src0, src1, len)
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#define append_math_sub_b(desc, dest, src0, src1, len) \
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APPEND_MATH(SUBB, desc, dest, src0, src1, len)
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#define append_math_and(desc, dest, src0, src1, len) \
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APPEND_MATH(AND, desc, dest, src0, src1, len)
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#define append_math_or(desc, dest, src0, src1, len) \
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APPEND_MATH(OR, desc, dest, src0, src1, len)
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#define append_math_xor(desc, dest, src0, src1, len) \
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APPEND_MATH(XOR, desc, dest, src0, src1, len)
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#define append_math_lshift(desc, dest, src0, src1, len) \
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APPEND_MATH(LSHIFT, desc, dest, src0, src1, len)
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#define append_math_rshift(desc, dest, src0, src1, len) \
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APPEND_MATH(RSHIFT, desc, dest, src0, src1, len)
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/* Exactly one source is IMM. Data is passed in as u32 value */
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#define APPEND_MATH_IMM_u32(op, desc, dest, src_0, src_1, data) \
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do { \
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APPEND_MATH(op, desc, dest, src_0, src_1, CAAM_CMD_SZ); \
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append_cmd(desc, data); \
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} while (0);
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#define append_math_add_imm_u32(desc, dest, src0, src1, data) \
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APPEND_MATH_IMM_u32(ADD, desc, dest, src0, src1, data)
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#define append_math_sub_imm_u32(desc, dest, src0, src1, data) \
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APPEND_MATH_IMM_u32(SUB, desc, dest, src0, src1, data)
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#define append_math_add_c_imm_u32(desc, dest, src0, src1, data) \
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APPEND_MATH_IMM_u32(ADDC, desc, dest, src0, src1, data)
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#define append_math_sub_b_imm_u32(desc, dest, src0, src1, data) \
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APPEND_MATH_IMM_u32(SUBB, desc, dest, src0, src1, data)
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#define append_math_and_imm_u32(desc, dest, src0, src1, data) \
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APPEND_MATH_IMM_u32(AND, desc, dest, src0, src1, data)
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#define append_math_or_imm_u32(desc, dest, src0, src1, data) \
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APPEND_MATH_IMM_u32(OR, desc, dest, src0, src1, data)
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#define append_math_xor_imm_u32(desc, dest, src0, src1, data) \
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APPEND_MATH_IMM_u32(XOR, desc, dest, src0, src1, data)
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#define append_math_lshift_imm_u32(desc, dest, src0, src1, data) \
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APPEND_MATH_IMM_u32(LSHIFT, desc, dest, src0, src1, data)
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#define append_math_rshift_imm_u32(desc, dest, src0, src1, data) \
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APPEND_MATH_IMM_u32(RSHIFT, desc, dest, src0, src1, data)
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