/*-
* 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 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__ */