diff options
Diffstat (limited to 'drivers/crypto/dpaa2_sec/hw/rta/math_cmd.h')
| -rw-r--r-- | drivers/crypto/dpaa2_sec/hw/rta/math_cmd.h | 402 |
1 files changed, 402 insertions, 0 deletions
diff --git a/drivers/crypto/dpaa2_sec/hw/rta/math_cmd.h b/drivers/crypto/dpaa2_sec/hw/rta/math_cmd.h new file mode 100644 index 00000000..a9b9091d --- /dev/null +++ b/drivers/crypto/dpaa2_sec/hw/rta/math_cmd.h @@ -0,0 +1,402 @@ +/*- + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * BSD LICENSE + * + * Copyright 2008-2016 Freescale Semiconductor Inc. + * Copyright (c) 2016 NXP. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of the above-listed copyright holders nor the + * names of any contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * GPL LICENSE SUMMARY + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __RTA_MATH_CMD_H__ +#define __RTA_MATH_CMD_H__ + +extern enum rta_sec_era rta_sec_era; + +static const uint32_t math_op1[][2] = { +/*1*/ { MATH0, MATH_SRC0_REG0 }, + { MATH1, MATH_SRC0_REG1 }, + { MATH2, MATH_SRC0_REG2 }, + { MATH3, MATH_SRC0_REG3 }, + { SEQINSZ, MATH_SRC0_SEQINLEN }, + { SEQOUTSZ, MATH_SRC0_SEQOUTLEN }, + { VSEQINSZ, MATH_SRC0_VARSEQINLEN }, + { VSEQOUTSZ, MATH_SRC0_VARSEQOUTLEN }, + { ZERO, MATH_SRC0_ZERO }, +/*10*/ { NONE, 0 }, /* dummy value */ + { DPOVRD, MATH_SRC0_DPOVRD }, + { ONE, MATH_SRC0_ONE } +}; + +/* + * Allowed MATH op1 sources for each SEC Era. + * Values represent the number of entries from math_op1[] that are supported. + */ +static const unsigned int math_op1_sz[] = {10, 10, 12, 12, 12, 12, 12, 12}; + +static const uint32_t math_op2[][2] = { +/*1*/ { MATH0, MATH_SRC1_REG0 }, + { MATH1, MATH_SRC1_REG1 }, + { MATH2, MATH_SRC1_REG2 }, + { MATH3, MATH_SRC1_REG3 }, + { ABD, MATH_SRC1_INFIFO }, + { OFIFO, MATH_SRC1_OUTFIFO }, + { ONE, MATH_SRC1_ONE }, +/*8*/ { NONE, 0 }, /* dummy value */ + { JOBSRC, MATH_SRC1_JOBSOURCE }, + { DPOVRD, MATH_SRC1_DPOVRD }, + { VSEQINSZ, MATH_SRC1_VARSEQINLEN }, + { VSEQOUTSZ, MATH_SRC1_VARSEQOUTLEN }, +/*13*/ { ZERO, MATH_SRC1_ZERO } +}; + +/* + * Allowed MATH op2 sources for each SEC Era. + * Values represent the number of entries from math_op2[] that are supported. + */ +static const unsigned int math_op2_sz[] = {8, 9, 13, 13, 13, 13, 13, 13}; + +static const uint32_t math_result[][2] = { +/*1*/ { MATH0, MATH_DEST_REG0 }, + { MATH1, MATH_DEST_REG1 }, + { MATH2, MATH_DEST_REG2 }, + { MATH3, MATH_DEST_REG3 }, + { SEQINSZ, MATH_DEST_SEQINLEN }, + { SEQOUTSZ, MATH_DEST_SEQOUTLEN }, + { VSEQINSZ, MATH_DEST_VARSEQINLEN }, + { VSEQOUTSZ, MATH_DEST_VARSEQOUTLEN }, +/*9*/ { NONE, MATH_DEST_NONE }, + { DPOVRD, MATH_DEST_DPOVRD } +}; + +/* + * Allowed MATH result destinations for each SEC Era. + * Values represent the number of entries from math_result[] that are + * supported. + */ +static const unsigned int math_result_sz[] = {9, 9, 10, 10, 10, 10, 10, 10}; + +static inline int +rta_math(struct program *program, uint64_t operand1, + uint32_t op, uint64_t operand2, uint32_t result, + int length, uint32_t options) +{ + uint32_t opcode = CMD_MATH; + uint32_t val = 0; + int ret = -EINVAL; + unsigned int start_pc = program->current_pc; + + if (((op == MATH_FUN_BSWAP) && (rta_sec_era < RTA_SEC_ERA_4)) || + ((op == MATH_FUN_ZBYT) && (rta_sec_era < RTA_SEC_ERA_2))) { + pr_err("MATH: operation not supported by SEC Era %d. SEC PC: %d; Instr: %d\n", + USER_SEC_ERA(rta_sec_era), program->current_pc, + program->current_instruction); + goto err; + } + + if (options & SWP) { + if (rta_sec_era < RTA_SEC_ERA_7) { + pr_err("MATH: operation not supported by SEC Era %d. SEC PC: %d; Instr: %d\n", + USER_SEC_ERA(rta_sec_era), program->current_pc, + program->current_instruction); + goto err; + } + + if ((options & IFB) || + (!(options & IMMED) && !(options & IMMED2)) || + ((options & IMMED) && (options & IMMED2))) { + pr_err("MATH: SWP - invalid configuration. SEC PC: %d; Instr: %d\n", + program->current_pc, + program->current_instruction); + goto err; + } + } + + /* + * SHLD operation is different from others and we + * assume that we can have _NONE as first operand + * or _SEQINSZ as second operand + */ + if ((op != MATH_FUN_SHLD) && ((operand1 == NONE) || + (operand2 == SEQINSZ))) { + pr_err("MATH: Invalid operand. SEC PC: %d; Instr: %d\n", + program->current_pc, program->current_instruction); + goto err; + } + + /* + * We first check if it is unary operation. In that + * case second operand must be _NONE + */ + if (((op == MATH_FUN_ZBYT) || (op == MATH_FUN_BSWAP)) && + (operand2 != NONE)) { + pr_err("MATH: Invalid operand2. SEC PC: %d; Instr: %d\n", + program->current_pc, program->current_instruction); + goto err; + } + + /* Write first operand field */ + if (options & IMMED) { + opcode |= MATH_SRC0_IMM; + } else { + ret = __rta_map_opcode((uint32_t)operand1, math_op1, + math_op1_sz[rta_sec_era], &val); + if (ret < 0) { + pr_err("MATH: operand1 not supported. SEC PC: %d; Instr: %d\n", + program->current_pc, + program->current_instruction); + goto err; + } + opcode |= val; + } + + /* Write second operand field */ + if (options & IMMED2) { + opcode |= MATH_SRC1_IMM; + } else { + ret = __rta_map_opcode((uint32_t)operand2, math_op2, + math_op2_sz[rta_sec_era], &val); + if (ret < 0) { + pr_err("MATH: operand2 not supported. SEC PC: %d; Instr: %d\n", + program->current_pc, + program->current_instruction); + goto err; + } + opcode |= val; + } + + /* Write result field */ + ret = __rta_map_opcode(result, math_result, math_result_sz[rta_sec_era], + &val); + if (ret < 0) { + pr_err("MATH: result not supported. SEC PC: %d; Instr: %d\n", + program->current_pc, program->current_instruction); + goto err; + } + opcode |= val; + + /* + * as we encode operations with their "real" values, we do not + * to translate but we do need to validate the value + */ + switch (op) { + /*Binary operators */ + case (MATH_FUN_ADD): + case (MATH_FUN_ADDC): + case (MATH_FUN_SUB): + case (MATH_FUN_SUBB): + case (MATH_FUN_OR): + case (MATH_FUN_AND): + case (MATH_FUN_XOR): + case (MATH_FUN_LSHIFT): + case (MATH_FUN_RSHIFT): + case (MATH_FUN_SHLD): + /* Unary operators */ + case (MATH_FUN_ZBYT): + case (MATH_FUN_BSWAP): + opcode |= op; + break; + default: + pr_err("MATH: operator is not supported. SEC PC: %d; Instr: %d\n", + program->current_pc, program->current_instruction); + ret = -EINVAL; + goto err; + } + + opcode |= (options & ~(IMMED | IMMED2)); + + /* Verify length */ + switch (length) { + case (1): + opcode |= MATH_LEN_1BYTE; + break; + case (2): + opcode |= MATH_LEN_2BYTE; + break; + case (4): + opcode |= MATH_LEN_4BYTE; + break; + case (8): + opcode |= MATH_LEN_8BYTE; + break; + default: + pr_err("MATH: length is not supported. SEC PC: %d; Instr: %d\n", + program->current_pc, program->current_instruction); + ret = -EINVAL; + goto err; + } + + __rta_out32(program, opcode); + program->current_instruction++; + + /* Write immediate value */ + if ((options & IMMED) && !(options & IMMED2)) { + __rta_out64(program, (length > 4) && !(options & IFB), + operand1); + } else if ((options & IMMED2) && !(options & IMMED)) { + __rta_out64(program, (length > 4) && !(options & IFB), + operand2); + } else if ((options & IMMED) && (options & IMMED2)) { + __rta_out32(program, lower_32_bits(operand1)); + __rta_out32(program, lower_32_bits(operand2)); + } + + return (int)start_pc; + + err: + program->first_error_pc = start_pc; + program->current_instruction++; + return ret; +} + +static inline int +rta_mathi(struct program *program, uint64_t operand, + uint32_t op, uint8_t imm, uint32_t result, + int length, uint32_t options) +{ + uint32_t opcode = CMD_MATHI; + uint32_t val = 0; + int ret = -EINVAL; + unsigned int start_pc = program->current_pc; + + if (rta_sec_era < RTA_SEC_ERA_6) { + pr_err("MATHI: Command not supported by SEC Era %d. SEC PC: %d; Instr: %d\n", + USER_SEC_ERA(rta_sec_era), program->current_pc, + program->current_instruction); + goto err; + } + + if (((op == MATH_FUN_FBYT) && (options & SSEL))) { + pr_err("MATHI: Illegal combination - FBYT and SSEL. SEC PC: %d; Instr: %d\n", + program->current_pc, program->current_instruction); + goto err; + } + + if ((options & SWP) && (rta_sec_era < RTA_SEC_ERA_7)) { + pr_err("MATHI: SWP not supported by SEC Era %d. SEC PC: %d; Instr: %d\n", + USER_SEC_ERA(rta_sec_era), program->current_pc, + program->current_instruction); + goto err; + } + + /* Write first operand field */ + if (!(options & SSEL)) + ret = __rta_map_opcode((uint32_t)operand, math_op1, + math_op1_sz[rta_sec_era], &val); + else + ret = __rta_map_opcode((uint32_t)operand, math_op2, + math_op2_sz[rta_sec_era], &val); + if (ret < 0) { + pr_err("MATHI: operand not supported. SEC PC: %d; Instr: %d\n", + program->current_pc, program->current_instruction); + goto err; + } + + if (!(options & SSEL)) + opcode |= val; + else + opcode |= (val << (MATHI_SRC1_SHIFT - MATH_SRC1_SHIFT)); + + /* Write second operand field */ + opcode |= (imm << MATHI_IMM_SHIFT); + + /* Write result field */ + ret = __rta_map_opcode(result, math_result, math_result_sz[rta_sec_era], + &val); + if (ret < 0) { + pr_err("MATHI: result not supported. SEC PC: %d; Instr: %d\n", + program->current_pc, program->current_instruction); + goto err; + } + opcode |= (val << (MATHI_DEST_SHIFT - MATH_DEST_SHIFT)); + + /* + * as we encode operations with their "real" values, we do not have to + * translate but we do need to validate the value + */ + switch (op) { + case (MATH_FUN_ADD): + case (MATH_FUN_ADDC): + case (MATH_FUN_SUB): + case (MATH_FUN_SUBB): + case (MATH_FUN_OR): + case (MATH_FUN_AND): + case (MATH_FUN_XOR): + case (MATH_FUN_LSHIFT): + case (MATH_FUN_RSHIFT): + case (MATH_FUN_FBYT): + opcode |= op; + break; + default: + pr_err("MATHI: operator not supported. SEC PC: %d; Instr: %d\n", + program->current_pc, program->current_instruction); + ret = -EINVAL; + goto err; + } + + opcode |= options; + + /* Verify length */ + switch (length) { + case (1): + opcode |= MATH_LEN_1BYTE; + break; + case (2): + opcode |= MATH_LEN_2BYTE; + break; + case (4): + opcode |= MATH_LEN_4BYTE; + break; + case (8): + opcode |= MATH_LEN_8BYTE; + break; + default: + pr_err("MATHI: length %d not supported. SEC PC: %d; Instr: %d\n", + length, program->current_pc, + program->current_instruction); + ret = -EINVAL; + goto err; + } + + __rta_out32(program, opcode); + program->current_instruction++; + + return (int)start_pc; + + err: + program->first_error_pc = start_pc; + program->current_instruction++; + return ret; +} + +#endif /* __RTA_MATH_CMD_H__ */ |