499 lines
16 KiB
C
499 lines
16 KiB
C
/*
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* caam descriptor construction helper functions
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*
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* Copyright 2008-2012 Freescale Semiconductor, Inc.
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*/
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#ifndef DESC_CONSTR_H
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#define DESC_CONSTR_H
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#include "desc.h"
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#include "regs.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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#define DESC_JOB_IO_LEN (CAAM_CMD_SZ * 5 + CAAM_PTR_SZ * 3)
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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_NO_PROP_ERRORS (IMMEDIATE | LDST_CLASS_DECO | \
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LDST_SRCDST_WORD_DECOCTRL | \
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(LDOFF_CHG_SHARE_OK_NO_PROP << \
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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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extern bool caam_little_end;
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static inline int desc_len(u32 * const desc)
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{
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return caam32_to_cpu(*desc) & HDR_DESCLEN_MASK;
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}
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static inline int desc_bytes(void * const 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 * const 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 * const 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 * const desc, u32 options)
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{
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*desc = cpu_to_caam32((options | HDR_ONE) + 1);
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}
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static inline void init_sh_desc(u32 * const 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 * const desc, u32 options,
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size_t pdb_bytes)
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{
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u32 pdb_len = (pdb_bytes + CAAM_CMD_SZ - 1) / CAAM_CMD_SZ;
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init_sh_desc(desc, (((pdb_len + 1) << 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 * const 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 init_job_desc_pdb(u32 * const desc, u32 options,
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size_t pdb_bytes)
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{
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u32 pdb_len = (pdb_bytes + CAAM_CMD_SZ - 1) / CAAM_CMD_SZ;
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init_job_desc(desc, (((pdb_len + 1) << HDR_START_IDX_SHIFT)) | options);
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}
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static inline void append_ptr(u32 * const 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 = cpu_to_caam_dma(ptr);
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(*desc) = cpu_to_caam32(caam32_to_cpu(*desc) +
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CAAM_PTR_SZ / CAAM_CMD_SZ);
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}
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static inline void init_job_desc_shared(u32 * const desc, dma_addr_t ptr,
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int len, 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 * const 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) = cpu_to_caam32(caam32_to_cpu(*desc) +
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(len + CAAM_CMD_SZ - 1) / CAAM_CMD_SZ);
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}
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static inline void append_cmd(u32 * const desc, u32 command)
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{
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u32 *cmd = desc_end(desc);
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*cmd = cpu_to_caam32(command);
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(*desc) = cpu_to_caam32(caam32_to_cpu(*desc) + 1);
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}
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#define append_u32 append_cmd
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static inline void append_u64(u32 * const desc, u64 data)
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{
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u32 *offset = desc_end(desc);
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/* Only 32-bit alignment is guaranteed in descriptor buffer */
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if (caam_little_end) {
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*offset = cpu_to_caam32(lower_32_bits(data));
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*(++offset) = cpu_to_caam32(upper_32_bits(data));
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} else {
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*offset = cpu_to_caam32(upper_32_bits(data));
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*(++offset) = cpu_to_caam32(lower_32_bits(data));
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}
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(*desc) = cpu_to_caam32(caam32_to_cpu(*desc) + 2);
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}
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/* Write command without affecting header, and return pointer to next word */
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static inline u32 *write_cmd(u32 * const desc, u32 command)
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{
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*desc = cpu_to_caam32(command);
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return desc + 1;
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}
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static inline void append_cmd_ptr(u32 * const 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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/* Write length after pointer, rather than inside command */
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static inline void append_cmd_ptr_extlen(u32 * const desc, dma_addr_t ptr,
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unsigned int len, u32 command)
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{
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append_cmd(desc, command);
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if (!(command & (SQIN_RTO | SQIN_PRE)))
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append_ptr(desc, ptr);
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append_cmd(desc, len);
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}
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static inline void append_cmd_data(u32 * const 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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#define APPEND_CMD_RET(cmd, op) \
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static inline u32 *append_##cmd(u32 * const 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_##op | options); \
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return cmd; \
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}
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APPEND_CMD_RET(jump, JUMP)
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APPEND_CMD_RET(move, MOVE)
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static inline void set_jump_tgt_here(u32 * const desc, u32 *jump_cmd)
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{
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*jump_cmd = cpu_to_caam32(caam32_to_cpu(*jump_cmd) |
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(desc_len(desc) - (jump_cmd - desc)));
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}
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static inline void set_move_tgt_here(u32 * const desc, u32 *move_cmd)
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{
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u32 val = caam32_to_cpu(*move_cmd);
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val &= ~MOVE_OFFSET_MASK;
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val |= (desc_len(desc) << (MOVE_OFFSET_SHIFT + 2)) & MOVE_OFFSET_MASK;
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*move_cmd = cpu_to_caam32(val);
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}
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#define APPEND_CMD(cmd, op) \
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static inline void append_##cmd(u32 * const 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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#define APPEND_CMD_LEN(cmd, op) \
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static inline void append_##cmd(u32 * const desc, 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(desc, CMD_##op | len | options); \
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}
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APPEND_CMD_LEN(seq_load, SEQ_LOAD)
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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 * const desc, dma_addr_t ptr, \
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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_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(load, LOAD)
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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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static inline void append_store(u32 * const desc, dma_addr_t ptr,
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unsigned int len, u32 options)
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{
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u32 cmd_src;
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cmd_src = options & LDST_SRCDST_MASK;
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append_cmd(desc, CMD_STORE | options | len);
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/* The following options do not require pointer */
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if (!(cmd_src == LDST_SRCDST_WORD_DESCBUF_SHARED ||
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cmd_src == LDST_SRCDST_WORD_DESCBUF_JOB ||
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cmd_src == LDST_SRCDST_WORD_DESCBUF_JOB_WE ||
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cmd_src == LDST_SRCDST_WORD_DESCBUF_SHARED_WE))
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append_ptr(desc, ptr);
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}
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#define APPEND_SEQ_PTR_INTLEN(cmd, op) \
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static inline void append_seq_##cmd##_ptr_intlen(u32 * const desc, \
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dma_addr_t ptr, \
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unsigned int len, \
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u32 options) \
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{ \
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PRINT_POS; \
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if (options & (SQIN_RTO | SQIN_PRE)) \
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append_cmd(desc, CMD_SEQ_##op##_PTR | len | options); \
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else \
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append_cmd_ptr(desc, ptr, len, CMD_SEQ_##op##_PTR | options); \
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}
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APPEND_SEQ_PTR_INTLEN(in, IN)
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APPEND_SEQ_PTR_INTLEN(out, OUT)
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#define APPEND_CMD_PTR_TO_IMM(cmd, op) \
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static inline void append_##cmd##_as_imm(u32 * const 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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#define APPEND_CMD_PTR_EXTLEN(cmd, op) \
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static inline void append_##cmd##_extlen(u32 * const desc, dma_addr_t ptr, \
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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_ptr_extlen(desc, ptr, len, CMD_##op | SQIN_EXT | options); \
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}
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APPEND_CMD_PTR_EXTLEN(seq_in_ptr, SEQ_IN_PTR)
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APPEND_CMD_PTR_EXTLEN(seq_out_ptr, SEQ_OUT_PTR)
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/*
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* Determine whether to store length internally or externally depending on
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* the size of its type
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*/
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#define APPEND_CMD_PTR_LEN(cmd, op, type) \
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static inline void append_##cmd(u32 * const desc, dma_addr_t ptr, \
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type len, u32 options) \
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{ \
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PRINT_POS; \
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if (sizeof(type) > sizeof(u16)) \
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append_##cmd##_extlen(desc, ptr, len, options); \
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else \
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append_##cmd##_intlen(desc, ptr, len, options); \
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}
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APPEND_CMD_PTR_LEN(seq_in_ptr, SEQ_IN_PTR, u32)
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APPEND_CMD_PTR_LEN(seq_out_ptr, SEQ_OUT_PTR, u32)
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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 * const 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 * const 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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* ee - endianness
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* size - size of immediate type in bytes
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*/
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#define APPEND_CMD_RAW_IMM2(cmd, op, ee, size) \
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static inline void append_##cmd##_imm_##ee##size(u32 *desc, \
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u##size immediate, \
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u32 options) \
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{ \
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__##ee##size data = cpu_to_##ee##size(immediate); \
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PRINT_POS; \
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append_cmd(desc, CMD_##op | IMMEDIATE | options | sizeof(data)); \
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append_data(desc, &data, sizeof(data)); \
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}
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APPEND_CMD_RAW_IMM2(load, LOAD, be, 32);
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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);
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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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#define append_math_ldshift(desc, dest, src0, src1, len) \
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APPEND_MATH(SHLD, 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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/* Exactly one source is IMM. Data is passed in as u64 value */
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#define APPEND_MATH_IMM_u64(op, desc, dest, src_0, src_1, data) \
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do { \
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u32 upper = (data >> 16) >> 16; \
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APPEND_MATH(op, desc, dest, src_0, src_1, CAAM_CMD_SZ * 2 | \
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(upper ? 0 : MATH_IFB)); \
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if (upper) \
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append_u64(desc, data); \
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else \
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append_u32(desc, lower_32_bits(data)); \
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} while (0)
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#define append_math_add_imm_u64(desc, dest, src0, src1, data) \
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APPEND_MATH_IMM_u64(ADD, desc, dest, src0, src1, data)
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#define append_math_sub_imm_u64(desc, dest, src0, src1, data) \
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APPEND_MATH_IMM_u64(SUB, desc, dest, src0, src1, data)
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#define append_math_add_c_imm_u64(desc, dest, src0, src1, data) \
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APPEND_MATH_IMM_u64(ADDC, desc, dest, src0, src1, data)
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#define append_math_sub_b_imm_u64(desc, dest, src0, src1, data) \
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APPEND_MATH_IMM_u64(SUBB, desc, dest, src0, src1, data)
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#define append_math_and_imm_u64(desc, dest, src0, src1, data) \
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APPEND_MATH_IMM_u64(AND, desc, dest, src0, src1, data)
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#define append_math_or_imm_u64(desc, dest, src0, src1, data) \
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APPEND_MATH_IMM_u64(OR, desc, dest, src0, src1, data)
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#define append_math_xor_imm_u64(desc, dest, src0, src1, data) \
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APPEND_MATH_IMM_u64(XOR, desc, dest, src0, src1, data)
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#define append_math_lshift_imm_u64(desc, dest, src0, src1, data) \
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APPEND_MATH_IMM_u64(LSHIFT, desc, dest, src0, src1, data)
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#define append_math_rshift_imm_u64(desc, dest, src0, src1, data) \
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APPEND_MATH_IMM_u64(RSHIFT, desc, dest, src0, src1, data)
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/**
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|
* struct alginfo - Container for algorithm details
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|
* @algtype: algorithm selector; for valid values, see documentation of the
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|
* functions where it is used.
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|
* @keylen: length of the provided algorithm key, in bytes
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|
* @keylen_pad: padded length of the provided algorithm key, in bytes
|
|
* @key: address where algorithm key resides; virtual address if key_inline
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|
* is true, dma (bus) address if key_inline is false.
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|
* @key_inline: true - key can be inlined in the descriptor; false - key is
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|
* referenced by the descriptor
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|
*/
|
|
struct alginfo {
|
|
u32 algtype;
|
|
unsigned int keylen;
|
|
unsigned int keylen_pad;
|
|
union {
|
|
dma_addr_t key_dma;
|
|
void *key_virt;
|
|
};
|
|
bool key_inline;
|
|
};
|
|
|
|
/**
|
|
* desc_inline_query() - Provide indications on which data items can be inlined
|
|
* and which shall be referenced in a shared descriptor.
|
|
* @sd_base_len: Shared descriptor base length - bytes consumed by the commands,
|
|
* excluding the data items to be inlined (or corresponding
|
|
* pointer if an item is not inlined). Each cnstr_* function that
|
|
* generates descriptors should have a define mentioning
|
|
* corresponding length.
|
|
* @jd_len: Maximum length of the job descriptor(s) that will be used
|
|
* together with the shared descriptor.
|
|
* @data_len: Array of lengths of the data items trying to be inlined
|
|
* @inl_mask: 32bit mask with bit x = 1 if data item x can be inlined, 0
|
|
* otherwise.
|
|
* @count: Number of data items (size of @data_len array); must be <= 32
|
|
*
|
|
* Return: 0 if data can be inlined / referenced, negative value if not. If 0,
|
|
* check @inl_mask for details.
|
|
*/
|
|
static inline int desc_inline_query(unsigned int sd_base_len,
|
|
unsigned int jd_len, unsigned int *data_len,
|
|
u32 *inl_mask, unsigned int count)
|
|
{
|
|
int rem_bytes = (int)(CAAM_DESC_BYTES_MAX - sd_base_len - jd_len);
|
|
unsigned int i;
|
|
|
|
*inl_mask = 0;
|
|
for (i = 0; (i < count) && (rem_bytes > 0); i++) {
|
|
if (rem_bytes - (int)(data_len[i] +
|
|
(count - i - 1) * CAAM_PTR_SZ) >= 0) {
|
|
rem_bytes -= data_len[i];
|
|
*inl_mask |= (1 << i);
|
|
} else {
|
|
rem_bytes -= CAAM_PTR_SZ;
|
|
}
|
|
}
|
|
|
|
return (rem_bytes >= 0) ? 0 : -1;
|
|
}
|
|
|
|
#endif /* DESC_CONSTR_H */
|