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605 lines
19 KiB
605 lines
19 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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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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* Copyright 2019 NXP |
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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 caam_ptr_sz |
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#define CAAM_PTR_SZ_MAX sizeof(dma_addr_t) |
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#define CAAM_PTR_SZ_MIN sizeof(u32) |
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#define CAAM_DESC_BYTES_MAX (CAAM_CMD_SZ * MAX_CAAM_DESCSIZE) |
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#define __DESC_JOB_IO_LEN(n) (CAAM_CMD_SZ * 5 + (n) * 3) |
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#define DESC_JOB_IO_LEN __DESC_JOB_IO_LEN(CAAM_PTR_SZ) |
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#define DESC_JOB_IO_LEN_MAX __DESC_JOB_IO_LEN(CAAM_PTR_SZ_MAX) |
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#define DESC_JOB_IO_LEN_MIN __DESC_JOB_IO_LEN(CAAM_PTR_SZ_MIN) |
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/* |
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* The CAAM QI hardware constructs a job descriptor which points |
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* to shared descriptor (as pointed by context_a of FQ to CAAM). |
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* When the job descriptor is executed by deco, the whole job |
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* descriptor together with shared descriptor gets loaded in |
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* deco buffer which is 64 words long (each 32-bit). |
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* |
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* The job descriptor constructed by QI hardware has layout: |
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* |
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* HEADER (1 word) |
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* Shdesc ptr (1 or 2 words) |
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* SEQ_OUT_PTR (1 word) |
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* Out ptr (1 or 2 words) |
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* Out length (1 word) |
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* SEQ_IN_PTR (1 word) |
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* In ptr (1 or 2 words) |
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* In length (1 word) |
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* |
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* The shdesc ptr is used to fetch shared descriptor contents |
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* into deco buffer. |
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* |
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* Apart from shdesc contents, the total number of words that |
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* get loaded in deco buffer are '8' or '11'. The remaining words |
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* in deco buffer can be used for storing shared descriptor. |
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*/ |
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#define MAX_SDLEN ((CAAM_DESC_BYTES_MAX - DESC_JOB_IO_LEN_MIN) / CAAM_CMD_SZ) |
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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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extern size_t caam_ptr_sz; |
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/* |
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* HW fetches 4 S/G table entries at a time, irrespective of how many entries |
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* are in the table. It's SW's responsibility to make sure these accesses |
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* do not have side effects. |
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*/ |
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static inline int pad_sg_nents(int sg_nents) |
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{ |
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return ALIGN(sg_nents, 4); |
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} |
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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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if (caam_ptr_sz == sizeof(dma_addr_t)) { |
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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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} else { |
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u32 *offset = (u32 *)desc_end(desc); |
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*offset = cpu_to_caam_dma(ptr); |
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} |
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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, const 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, const 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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APPEND_CMD_RET(move_len, MOVE_LEN) |
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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, const 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, const 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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if (options & LDST_LEN_MASK) \ |
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append_cmd(desc, CMD_##op | IMMEDIATE | options); \ |
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else \ |
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append_cmd(desc, CMD_##op | IMMEDIATE | options | \ |
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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 |
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* @key_dma: dma (bus) address where algorithm key resides |
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* @key_virt: virtual address where algorithm key resides |
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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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*/ |
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struct alginfo { |
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u32 algtype; |
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unsigned int keylen; |
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unsigned int keylen_pad; |
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dma_addr_t key_dma; |
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const void *key_virt; |
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bool key_inline; |
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}; |
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|
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/** |
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* desc_inline_query() - Provide indications on which data items can be inlined |
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* and which shall be referenced in a shared descriptor. |
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* @sd_base_len: Shared descriptor base length - bytes consumed by the commands, |
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* excluding the data items to be inlined (or corresponding |
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* pointer if an item is not inlined). Each cnstr_* function that |
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* generates descriptors should have a define mentioning |
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* corresponding length. |
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* @jd_len: Maximum length of the job descriptor(s) that will be used |
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* together with the shared descriptor. |
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* @data_len: Array of lengths of the data items trying to be inlined |
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* @inl_mask: 32bit mask with bit x = 1 if data item x can be inlined, 0 |
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* otherwise. |
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* @count: Number of data items (size of @data_len array); must be <= 32 |
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* |
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* Return: 0 if data can be inlined / referenced, negative value if not. If 0, |
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* check @inl_mask for details. |
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*/ |
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static inline int desc_inline_query(unsigned int sd_base_len, |
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unsigned int jd_len, unsigned int *data_len, |
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u32 *inl_mask, unsigned int count) |
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{ |
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int rem_bytes = (int)(CAAM_DESC_BYTES_MAX - sd_base_len - jd_len); |
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unsigned int i; |
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*inl_mask = 0; |
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for (i = 0; (i < count) && (rem_bytes > 0); i++) { |
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if (rem_bytes - (int)(data_len[i] + |
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(count - i - 1) * CAAM_PTR_SZ) >= 0) { |
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rem_bytes -= data_len[i]; |
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*inl_mask |= (1 << i); |
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} else { |
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rem_bytes -= CAAM_PTR_SZ; |
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} |
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} |
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return (rem_bytes >= 0) ? 0 : -1; |
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} |
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/** |
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* append_proto_dkp - Derived Key Protocol (DKP): key -> split key |
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* @desc: pointer to buffer used for descriptor construction |
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* @adata: pointer to authentication transform definitions. |
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* keylen should be the length of initial key, while keylen_pad |
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* the length of the derived (split) key. |
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* Valid algorithm values - one of OP_ALG_ALGSEL_{MD5, SHA1, SHA224, |
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* SHA256, SHA384, SHA512}. |
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*/ |
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static inline void append_proto_dkp(u32 * const desc, struct alginfo *adata) |
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{ |
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u32 protid; |
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|
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/* |
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* Quick & dirty translation from OP_ALG_ALGSEL_{MD5, SHA*} |
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* to OP_PCLID_DKP_{MD5, SHA*} |
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*/ |
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protid = (adata->algtype & OP_ALG_ALGSEL_SUBMASK) | |
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(0x20 << OP_ALG_ALGSEL_SHIFT); |
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if (adata->key_inline) { |
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int words; |
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if (adata->keylen > adata->keylen_pad) { |
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append_operation(desc, OP_TYPE_UNI_PROTOCOL | protid | |
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OP_PCL_DKP_SRC_PTR | |
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OP_PCL_DKP_DST_IMM | adata->keylen); |
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append_ptr(desc, adata->key_dma); |
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words = (ALIGN(adata->keylen_pad, CAAM_CMD_SZ) - |
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CAAM_PTR_SZ) / CAAM_CMD_SZ; |
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} else { |
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append_operation(desc, OP_TYPE_UNI_PROTOCOL | protid | |
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OP_PCL_DKP_SRC_IMM | |
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OP_PCL_DKP_DST_IMM | adata->keylen); |
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append_data(desc, adata->key_virt, adata->keylen); |
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words = (ALIGN(adata->keylen_pad, CAAM_CMD_SZ) - |
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ALIGN(adata->keylen, CAAM_CMD_SZ)) / |
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CAAM_CMD_SZ; |
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} |
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|
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/* Reserve space in descriptor buffer for the derived key */ |
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if (words) |
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(*desc) = cpu_to_caam32(caam32_to_cpu(*desc) + words); |
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} else { |
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append_operation(desc, OP_TYPE_UNI_PROTOCOL | protid | |
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OP_PCL_DKP_SRC_PTR | OP_PCL_DKP_DST_PTR | |
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adata->keylen); |
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append_ptr(desc, adata->key_dma); |
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} |
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} |
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#endif /* DESC_CONSTR_H */
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