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