620 lines
18 KiB
C
620 lines
18 KiB
C
/***********************license start***************
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* Author: Cavium Networks
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*
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* Contact: support@caviumnetworks.com
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* This file is part of the OCTEON SDK
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*
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* Copyright (c) 2003-2008 Cavium Networks
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, Version 2, as
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* published by the Free Software Foundation.
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*
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* This file is distributed in the hope that it will be useful, but
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* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
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* NONINFRINGEMENT. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this file; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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* or visit http://www.gnu.org/licenses/.
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*
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* This file may also be available under a different license from Cavium.
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* Contact Cavium Networks for more information
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***********************license end**************************************/
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/*
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* Interface to the hardware Fetch and Add Unit.
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*/
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#ifndef __CVMX_FAU_H__
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#define __CVMX_FAU_H__
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/*
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* Octeon Fetch and Add Unit (FAU)
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*/
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#define CVMX_FAU_LOAD_IO_ADDRESS cvmx_build_io_address(0x1e, 0)
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#define CVMX_FAU_BITS_SCRADDR 63, 56
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#define CVMX_FAU_BITS_LEN 55, 48
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#define CVMX_FAU_BITS_INEVAL 35, 14
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#define CVMX_FAU_BITS_TAGWAIT 13, 13
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#define CVMX_FAU_BITS_NOADD 13, 13
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#define CVMX_FAU_BITS_SIZE 12, 11
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#define CVMX_FAU_BITS_REGISTER 10, 0
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typedef enum {
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CVMX_FAU_OP_SIZE_8 = 0,
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CVMX_FAU_OP_SIZE_16 = 1,
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CVMX_FAU_OP_SIZE_32 = 2,
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CVMX_FAU_OP_SIZE_64 = 3
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} cvmx_fau_op_size_t;
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/**
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* Tagwait return definition. If a timeout occurs, the error
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* bit will be set. Otherwise the value of the register before
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* the update will be returned.
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*/
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typedef struct {
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uint64_t error:1;
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int64_t value:63;
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} cvmx_fau_tagwait64_t;
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/**
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* Tagwait return definition. If a timeout occurs, the error
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* bit will be set. Otherwise the value of the register before
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* the update will be returned.
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*/
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typedef struct {
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uint64_t error:1;
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int32_t value:31;
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} cvmx_fau_tagwait32_t;
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/**
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* Tagwait return definition. If a timeout occurs, the error
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* bit will be set. Otherwise the value of the register before
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* the update will be returned.
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*/
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typedef struct {
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uint64_t error:1;
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int16_t value:15;
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} cvmx_fau_tagwait16_t;
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/**
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* Tagwait return definition. If a timeout occurs, the error
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* bit will be set. Otherwise the value of the register before
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* the update will be returned.
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*/
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typedef struct {
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uint64_t error:1;
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int8_t value:7;
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} cvmx_fau_tagwait8_t;
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/**
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* Asynchronous tagwait return definition. If a timeout occurs,
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* the error bit will be set. Otherwise the value of the
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* register before the update will be returned.
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*/
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typedef union {
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uint64_t u64;
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struct {
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uint64_t invalid:1;
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uint64_t data:63; /* unpredictable if invalid is set */
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} s;
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} cvmx_fau_async_tagwait_result_t;
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#ifdef __BIG_ENDIAN_BITFIELD
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#define SWIZZLE_8 0
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#define SWIZZLE_16 0
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#define SWIZZLE_32 0
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#else
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#define SWIZZLE_8 0x7
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#define SWIZZLE_16 0x6
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#define SWIZZLE_32 0x4
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#endif
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/**
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* Builds a store I/O address for writing to the FAU
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*
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* @noadd: 0 = Store value is atomically added to the current value
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* 1 = Store value is atomically written over the current value
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* @reg: FAU atomic register to access. 0 <= reg < 2048.
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* - Step by 2 for 16 bit access.
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* - Step by 4 for 32 bit access.
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* - Step by 8 for 64 bit access.
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* Returns Address to store for atomic update
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*/
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static inline uint64_t __cvmx_fau_store_address(uint64_t noadd, uint64_t reg)
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{
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return CVMX_ADD_IO_SEG(CVMX_FAU_LOAD_IO_ADDRESS) |
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cvmx_build_bits(CVMX_FAU_BITS_NOADD, noadd) |
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cvmx_build_bits(CVMX_FAU_BITS_REGISTER, reg);
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}
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/**
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* Builds a I/O address for accessing the FAU
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*
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* @tagwait: Should the atomic add wait for the current tag switch
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* operation to complete.
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* - 0 = Don't wait
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* - 1 = Wait for tag switch to complete
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* @reg: FAU atomic register to access. 0 <= reg < 2048.
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* - Step by 2 for 16 bit access.
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* - Step by 4 for 32 bit access.
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* - Step by 8 for 64 bit access.
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* @value: Signed value to add.
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* Note: When performing 32 and 64 bit access, only the low
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* 22 bits are available.
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* Returns Address to read from for atomic update
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*/
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static inline uint64_t __cvmx_fau_atomic_address(uint64_t tagwait, uint64_t reg,
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int64_t value)
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{
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return CVMX_ADD_IO_SEG(CVMX_FAU_LOAD_IO_ADDRESS) |
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cvmx_build_bits(CVMX_FAU_BITS_INEVAL, value) |
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cvmx_build_bits(CVMX_FAU_BITS_TAGWAIT, tagwait) |
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cvmx_build_bits(CVMX_FAU_BITS_REGISTER, reg);
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}
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/**
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* Perform an atomic 64 bit add
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*
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* @reg: FAU atomic register to access. 0 <= reg < 2048.
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* - Step by 8 for 64 bit access.
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* @value: Signed value to add.
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* Note: Only the low 22 bits are available.
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* Returns Value of the register before the update
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*/
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static inline int64_t cvmx_fau_fetch_and_add64(cvmx_fau_reg_64_t reg,
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int64_t value)
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{
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return cvmx_read64_int64(__cvmx_fau_atomic_address(0, reg, value));
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}
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/**
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* Perform an atomic 32 bit add
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*
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* @reg: FAU atomic register to access. 0 <= reg < 2048.
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* - Step by 4 for 32 bit access.
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* @value: Signed value to add.
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* Note: Only the low 22 bits are available.
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* Returns Value of the register before the update
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*/
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static inline int32_t cvmx_fau_fetch_and_add32(cvmx_fau_reg_32_t reg,
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int32_t value)
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{
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reg ^= SWIZZLE_32;
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return cvmx_read64_int32(__cvmx_fau_atomic_address(0, reg, value));
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}
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/**
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* Perform an atomic 16 bit add
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*
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* @reg: FAU atomic register to access. 0 <= reg < 2048.
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* - Step by 2 for 16 bit access.
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* @value: Signed value to add.
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* Returns Value of the register before the update
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*/
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static inline int16_t cvmx_fau_fetch_and_add16(cvmx_fau_reg_16_t reg,
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int16_t value)
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{
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reg ^= SWIZZLE_16;
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return cvmx_read64_int16(__cvmx_fau_atomic_address(0, reg, value));
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}
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/**
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* Perform an atomic 8 bit add
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*
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* @reg: FAU atomic register to access. 0 <= reg < 2048.
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* @value: Signed value to add.
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* Returns Value of the register before the update
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*/
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static inline int8_t cvmx_fau_fetch_and_add8(cvmx_fau_reg_8_t reg, int8_t value)
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{
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reg ^= SWIZZLE_8;
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return cvmx_read64_int8(__cvmx_fau_atomic_address(0, reg, value));
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}
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/**
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* Perform an atomic 64 bit add after the current tag switch
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* completes
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*
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* @reg: FAU atomic register to access. 0 <= reg < 2048.
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* - Step by 8 for 64 bit access.
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* @value: Signed value to add.
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* Note: Only the low 22 bits are available.
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* Returns If a timeout occurs, the error bit will be set. Otherwise
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* the value of the register before the update will be
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* returned
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*/
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static inline cvmx_fau_tagwait64_t
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cvmx_fau_tagwait_fetch_and_add64(cvmx_fau_reg_64_t reg, int64_t value)
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{
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union {
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uint64_t i64;
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cvmx_fau_tagwait64_t t;
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} result;
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result.i64 =
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cvmx_read64_int64(__cvmx_fau_atomic_address(1, reg, value));
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return result.t;
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}
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/**
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* Perform an atomic 32 bit add after the current tag switch
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* completes
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*
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* @reg: FAU atomic register to access. 0 <= reg < 2048.
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* - Step by 4 for 32 bit access.
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* @value: Signed value to add.
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* Note: Only the low 22 bits are available.
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* Returns If a timeout occurs, the error bit will be set. Otherwise
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* the value of the register before the update will be
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* returned
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*/
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static inline cvmx_fau_tagwait32_t
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cvmx_fau_tagwait_fetch_and_add32(cvmx_fau_reg_32_t reg, int32_t value)
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{
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union {
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uint64_t i32;
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cvmx_fau_tagwait32_t t;
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} result;
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reg ^= SWIZZLE_32;
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result.i32 =
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cvmx_read64_int32(__cvmx_fau_atomic_address(1, reg, value));
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return result.t;
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}
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/**
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* Perform an atomic 16 bit add after the current tag switch
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* completes
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*
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* @reg: FAU atomic register to access. 0 <= reg < 2048.
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* - Step by 2 for 16 bit access.
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* @value: Signed value to add.
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* Returns If a timeout occurs, the error bit will be set. Otherwise
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* the value of the register before the update will be
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* returned
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*/
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static inline cvmx_fau_tagwait16_t
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cvmx_fau_tagwait_fetch_and_add16(cvmx_fau_reg_16_t reg, int16_t value)
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{
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union {
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uint64_t i16;
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cvmx_fau_tagwait16_t t;
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} result;
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reg ^= SWIZZLE_16;
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result.i16 =
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cvmx_read64_int16(__cvmx_fau_atomic_address(1, reg, value));
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return result.t;
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}
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/**
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* Perform an atomic 8 bit add after the current tag switch
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* completes
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*
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* @reg: FAU atomic register to access. 0 <= reg < 2048.
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* @value: Signed value to add.
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* Returns If a timeout occurs, the error bit will be set. Otherwise
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* the value of the register before the update will be
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* returned
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*/
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static inline cvmx_fau_tagwait8_t
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cvmx_fau_tagwait_fetch_and_add8(cvmx_fau_reg_8_t reg, int8_t value)
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{
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union {
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uint64_t i8;
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cvmx_fau_tagwait8_t t;
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} result;
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reg ^= SWIZZLE_8;
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result.i8 = cvmx_read64_int8(__cvmx_fau_atomic_address(1, reg, value));
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return result.t;
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}
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/**
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* Builds I/O data for async operations
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*
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* @scraddr: Scratch pad byte address to write to. Must be 8 byte aligned
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* @value: Signed value to add.
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* Note: When performing 32 and 64 bit access, only the low
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* 22 bits are available.
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* @tagwait: Should the atomic add wait for the current tag switch
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* operation to complete.
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* - 0 = Don't wait
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* - 1 = Wait for tag switch to complete
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* @size: The size of the operation:
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* - CVMX_FAU_OP_SIZE_8 (0) = 8 bits
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* - CVMX_FAU_OP_SIZE_16 (1) = 16 bits
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* - CVMX_FAU_OP_SIZE_32 (2) = 32 bits
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* - CVMX_FAU_OP_SIZE_64 (3) = 64 bits
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* @reg: FAU atomic register to access. 0 <= reg < 2048.
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* - Step by 2 for 16 bit access.
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* - Step by 4 for 32 bit access.
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* - Step by 8 for 64 bit access.
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* Returns Data to write using cvmx_send_single
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*/
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static inline uint64_t __cvmx_fau_iobdma_data(uint64_t scraddr, int64_t value,
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uint64_t tagwait,
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cvmx_fau_op_size_t size,
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uint64_t reg)
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{
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return CVMX_FAU_LOAD_IO_ADDRESS |
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cvmx_build_bits(CVMX_FAU_BITS_SCRADDR, scraddr >> 3) |
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cvmx_build_bits(CVMX_FAU_BITS_LEN, 1) |
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cvmx_build_bits(CVMX_FAU_BITS_INEVAL, value) |
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cvmx_build_bits(CVMX_FAU_BITS_TAGWAIT, tagwait) |
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cvmx_build_bits(CVMX_FAU_BITS_SIZE, size) |
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cvmx_build_bits(CVMX_FAU_BITS_REGISTER, reg);
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}
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/**
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* Perform an async atomic 64 bit add. The old value is
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* placed in the scratch memory at byte address scraddr.
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*
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* @scraddr: Scratch memory byte address to put response in.
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* Must be 8 byte aligned.
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* @reg: FAU atomic register to access. 0 <= reg < 2048.
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* - Step by 8 for 64 bit access.
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* @value: Signed value to add.
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* Note: Only the low 22 bits are available.
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* Returns Placed in the scratch pad register
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*/
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static inline void cvmx_fau_async_fetch_and_add64(uint64_t scraddr,
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cvmx_fau_reg_64_t reg,
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int64_t value)
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{
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cvmx_send_single(__cvmx_fau_iobdma_data
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(scraddr, value, 0, CVMX_FAU_OP_SIZE_64, reg));
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}
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/**
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* Perform an async atomic 32 bit add. The old value is
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* placed in the scratch memory at byte address scraddr.
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*
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* @scraddr: Scratch memory byte address to put response in.
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* Must be 8 byte aligned.
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* @reg: FAU atomic register to access. 0 <= reg < 2048.
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* - Step by 4 for 32 bit access.
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* @value: Signed value to add.
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* Note: Only the low 22 bits are available.
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* Returns Placed in the scratch pad register
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*/
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static inline void cvmx_fau_async_fetch_and_add32(uint64_t scraddr,
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cvmx_fau_reg_32_t reg,
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int32_t value)
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{
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cvmx_send_single(__cvmx_fau_iobdma_data
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(scraddr, value, 0, CVMX_FAU_OP_SIZE_32, reg));
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}
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/**
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* Perform an async atomic 16 bit add. The old value is
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* placed in the scratch memory at byte address scraddr.
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*
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* @scraddr: Scratch memory byte address to put response in.
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* Must be 8 byte aligned.
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* @reg: FAU atomic register to access. 0 <= reg < 2048.
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* - Step by 2 for 16 bit access.
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* @value: Signed value to add.
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* Returns Placed in the scratch pad register
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*/
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static inline void cvmx_fau_async_fetch_and_add16(uint64_t scraddr,
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cvmx_fau_reg_16_t reg,
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int16_t value)
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{
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cvmx_send_single(__cvmx_fau_iobdma_data
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(scraddr, value, 0, CVMX_FAU_OP_SIZE_16, reg));
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}
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/**
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* Perform an async atomic 8 bit add. The old value is
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* placed in the scratch memory at byte address scraddr.
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*
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* @scraddr: Scratch memory byte address to put response in.
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* Must be 8 byte aligned.
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* @reg: FAU atomic register to access. 0 <= reg < 2048.
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* @value: Signed value to add.
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* Returns Placed in the scratch pad register
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*/
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static inline void cvmx_fau_async_fetch_and_add8(uint64_t scraddr,
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cvmx_fau_reg_8_t reg,
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int8_t value)
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{
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cvmx_send_single(__cvmx_fau_iobdma_data
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(scraddr, value, 0, CVMX_FAU_OP_SIZE_8, reg));
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}
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/**
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* Perform an async atomic 64 bit add after the current tag
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* switch completes.
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*
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* @scraddr: Scratch memory byte address to put response in. Must be
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* 8 byte aligned. If a timeout occurs, the error bit (63)
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* will be set. Otherwise the value of the register before
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* the update will be returned
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*
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* @reg: FAU atomic register to access. 0 <= reg < 2048.
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* - Step by 8 for 64 bit access.
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* @value: Signed value to add.
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* Note: Only the low 22 bits are available.
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* Returns Placed in the scratch pad register
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*/
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static inline void cvmx_fau_async_tagwait_fetch_and_add64(uint64_t scraddr,
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cvmx_fau_reg_64_t reg,
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int64_t value)
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{
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cvmx_send_single(__cvmx_fau_iobdma_data
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(scraddr, value, 1, CVMX_FAU_OP_SIZE_64, reg));
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}
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/**
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* Perform an async atomic 32 bit add after the current tag
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* switch completes.
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*
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* @scraddr: Scratch memory byte address to put response in. Must be
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* 8 byte aligned. If a timeout occurs, the error bit (63)
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* will be set. Otherwise the value of the register before
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* the update will be returned
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*
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* @reg: FAU atomic register to access. 0 <= reg < 2048.
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* - Step by 4 for 32 bit access.
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* @value: Signed value to add.
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* Note: Only the low 22 bits are available.
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* Returns Placed in the scratch pad register
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*/
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static inline void cvmx_fau_async_tagwait_fetch_and_add32(uint64_t scraddr,
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cvmx_fau_reg_32_t reg,
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int32_t value)
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{
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cvmx_send_single(__cvmx_fau_iobdma_data
|
|
(scraddr, value, 1, CVMX_FAU_OP_SIZE_32, reg));
|
|
}
|
|
|
|
/**
|
|
* Perform an async atomic 16 bit add after the current tag
|
|
* switch completes.
|
|
*
|
|
* @scraddr: Scratch memory byte address to put response in. Must be
|
|
* 8 byte aligned. If a timeout occurs, the error bit (63)
|
|
* will be set. Otherwise the value of the register before
|
|
* the update will be returned
|
|
*
|
|
* @reg: FAU atomic register to access. 0 <= reg < 2048.
|
|
* - Step by 2 for 16 bit access.
|
|
* @value: Signed value to add.
|
|
*
|
|
* Returns Placed in the scratch pad register
|
|
*/
|
|
static inline void cvmx_fau_async_tagwait_fetch_and_add16(uint64_t scraddr,
|
|
cvmx_fau_reg_16_t reg,
|
|
int16_t value)
|
|
{
|
|
cvmx_send_single(__cvmx_fau_iobdma_data
|
|
(scraddr, value, 1, CVMX_FAU_OP_SIZE_16, reg));
|
|
}
|
|
|
|
/**
|
|
* Perform an async atomic 8 bit add after the current tag
|
|
* switch completes.
|
|
*
|
|
* @scraddr: Scratch memory byte address to put response in. Must be
|
|
* 8 byte aligned. If a timeout occurs, the error bit (63)
|
|
* will be set. Otherwise the value of the register before
|
|
* the update will be returned
|
|
*
|
|
* @reg: FAU atomic register to access. 0 <= reg < 2048.
|
|
* @value: Signed value to add.
|
|
*
|
|
* Returns Placed in the scratch pad register
|
|
*/
|
|
static inline void cvmx_fau_async_tagwait_fetch_and_add8(uint64_t scraddr,
|
|
cvmx_fau_reg_8_t reg,
|
|
int8_t value)
|
|
{
|
|
cvmx_send_single(__cvmx_fau_iobdma_data
|
|
(scraddr, value, 1, CVMX_FAU_OP_SIZE_8, reg));
|
|
}
|
|
|
|
/**
|
|
* Perform an atomic 64 bit add
|
|
*
|
|
* @reg: FAU atomic register to access. 0 <= reg < 2048.
|
|
* - Step by 8 for 64 bit access.
|
|
* @value: Signed value to add.
|
|
*/
|
|
static inline void cvmx_fau_atomic_add64(cvmx_fau_reg_64_t reg, int64_t value)
|
|
{
|
|
cvmx_write64_int64(__cvmx_fau_store_address(0, reg), value);
|
|
}
|
|
|
|
/**
|
|
* Perform an atomic 32 bit add
|
|
*
|
|
* @reg: FAU atomic register to access. 0 <= reg < 2048.
|
|
* - Step by 4 for 32 bit access.
|
|
* @value: Signed value to add.
|
|
*/
|
|
static inline void cvmx_fau_atomic_add32(cvmx_fau_reg_32_t reg, int32_t value)
|
|
{
|
|
reg ^= SWIZZLE_32;
|
|
cvmx_write64_int32(__cvmx_fau_store_address(0, reg), value);
|
|
}
|
|
|
|
/**
|
|
* Perform an atomic 16 bit add
|
|
*
|
|
* @reg: FAU atomic register to access. 0 <= reg < 2048.
|
|
* - Step by 2 for 16 bit access.
|
|
* @value: Signed value to add.
|
|
*/
|
|
static inline void cvmx_fau_atomic_add16(cvmx_fau_reg_16_t reg, int16_t value)
|
|
{
|
|
reg ^= SWIZZLE_16;
|
|
cvmx_write64_int16(__cvmx_fau_store_address(0, reg), value);
|
|
}
|
|
|
|
/**
|
|
* Perform an atomic 8 bit add
|
|
*
|
|
* @reg: FAU atomic register to access. 0 <= reg < 2048.
|
|
* @value: Signed value to add.
|
|
*/
|
|
static inline void cvmx_fau_atomic_add8(cvmx_fau_reg_8_t reg, int8_t value)
|
|
{
|
|
reg ^= SWIZZLE_8;
|
|
cvmx_write64_int8(__cvmx_fau_store_address(0, reg), value);
|
|
}
|
|
|
|
/**
|
|
* Perform an atomic 64 bit write
|
|
*
|
|
* @reg: FAU atomic register to access. 0 <= reg < 2048.
|
|
* - Step by 8 for 64 bit access.
|
|
* @value: Signed value to write.
|
|
*/
|
|
static inline void cvmx_fau_atomic_write64(cvmx_fau_reg_64_t reg, int64_t value)
|
|
{
|
|
cvmx_write64_int64(__cvmx_fau_store_address(1, reg), value);
|
|
}
|
|
|
|
/**
|
|
* Perform an atomic 32 bit write
|
|
*
|
|
* @reg: FAU atomic register to access. 0 <= reg < 2048.
|
|
* - Step by 4 for 32 bit access.
|
|
* @value: Signed value to write.
|
|
*/
|
|
static inline void cvmx_fau_atomic_write32(cvmx_fau_reg_32_t reg, int32_t value)
|
|
{
|
|
reg ^= SWIZZLE_32;
|
|
cvmx_write64_int32(__cvmx_fau_store_address(1, reg), value);
|
|
}
|
|
|
|
/**
|
|
* Perform an atomic 16 bit write
|
|
*
|
|
* @reg: FAU atomic register to access. 0 <= reg < 2048.
|
|
* - Step by 2 for 16 bit access.
|
|
* @value: Signed value to write.
|
|
*/
|
|
static inline void cvmx_fau_atomic_write16(cvmx_fau_reg_16_t reg, int16_t value)
|
|
{
|
|
reg ^= SWIZZLE_16;
|
|
cvmx_write64_int16(__cvmx_fau_store_address(1, reg), value);
|
|
}
|
|
|
|
/**
|
|
* Perform an atomic 8 bit write
|
|
*
|
|
* @reg: FAU atomic register to access. 0 <= reg < 2048.
|
|
* @value: Signed value to write.
|
|
*/
|
|
static inline void cvmx_fau_atomic_write8(cvmx_fau_reg_8_t reg, int8_t value)
|
|
{
|
|
reg ^= SWIZZLE_8;
|
|
cvmx_write64_int8(__cvmx_fau_store_address(1, reg), value);
|
|
}
|
|
|
|
#endif /* __CVMX_FAU_H__ */
|