140 lines
5.1 KiB
C
140 lines
5.1 KiB
C
|
/***********************license start***************
|
||
|
|
* Author: Cavium Networks
|
||
|
|
*
|
||
|
|
* Contact: support@caviumnetworks.com
|
||
|
|
* This file is part of the OCTEON SDK
|
||
|
|
*
|
||
|
|
* Copyright (c) 2003-2008 Cavium Networks
|
||
|
|
*
|
||
|
|
* This file is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License, Version 2, as
|
||
|
|
* published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
* This file is distributed in the hope that it will be useful, but
|
||
|
|
* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
|
||
|
|
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
|
||
|
|
* NONINFRINGEMENT. See the GNU General Public License for more
|
||
|
|
* details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this file; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
* or visit http://www.gnu.org/licenses/.
|
||
|
|
*
|
||
|
|
* This file may also be available under a different license from Cavium.
|
||
|
|
* Contact Cavium Networks for more information
|
||
|
|
***********************license end**************************************/
|
||
|
|
|
||
|
|
/*
|
||
|
|
*
|
||
|
|
* This is file defines ASM primitives for the executive.
|
||
|
|
*/
|
||
|
|
#ifndef __CVMX_ASM_H__
|
||
|
|
#define __CVMX_ASM_H__
|
||
|
|
|
||
|
|
#include <asm/octeon/octeon-model.h>
|
||
|
|
|
||
|
|
/* other useful stuff */
|
||
|
|
#define CVMX_SYNC asm volatile ("sync" : : : "memory")
|
||
|
|
/* String version of SYNCW macro for using in inline asm constructs */
|
||
|
|
#define CVMX_SYNCW_STR "syncw\nsyncw\n"
|
||
|
|
#ifdef __OCTEON__
|
||
|
|
|
||
|
|
/* Deprecated, will be removed in future release */
|
||
|
|
#define CVMX_SYNCIO asm volatile ("nop")
|
||
|
|
|
||
|
|
#define CVMX_SYNCIOBDMA asm volatile ("synciobdma" : : : "memory")
|
||
|
|
|
||
|
|
/* Deprecated, will be removed in future release */
|
||
|
|
#define CVMX_SYNCIOALL asm volatile ("nop")
|
||
|
|
|
||
|
|
/*
|
||
|
|
* We actually use two syncw instructions in a row when we need a write
|
||
|
|
* memory barrier. This is because the CN3XXX series of Octeons have
|
||
|
|
* errata Core-401. This can cause a single syncw to not enforce
|
||
|
|
* ordering under very rare conditions. Even if it is rare, better safe
|
||
|
|
* than sorry.
|
||
|
|
*/
|
||
|
|
#define CVMX_SYNCW asm volatile ("syncw\n\tsyncw" : : : "memory")
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Define new sync instructions to be normal SYNC instructions for
|
||
|
|
* operating systems that use threads.
|
||
|
|
*/
|
||
|
|
#define CVMX_SYNCWS CVMX_SYNCW
|
||
|
|
#define CVMX_SYNCS CVMX_SYNC
|
||
|
|
#define CVMX_SYNCWS_STR CVMX_SYNCW_STR
|
||
|
|
#else
|
||
|
|
/*
|
||
|
|
* Not using a Cavium compiler, always use the slower sync so the
|
||
|
|
* assembler stays happy.
|
||
|
|
*/
|
||
|
|
/* Deprecated, will be removed in future release */
|
||
|
|
#define CVMX_SYNCIO asm volatile ("nop")
|
||
|
|
|
||
|
|
#define CVMX_SYNCIOBDMA asm volatile ("sync" : : : "memory")
|
||
|
|
|
||
|
|
/* Deprecated, will be removed in future release */
|
||
|
|
#define CVMX_SYNCIOALL asm volatile ("nop")
|
||
|
|
|
||
|
|
#define CVMX_SYNCW asm volatile ("sync" : : : "memory")
|
||
|
|
#define CVMX_SYNCWS CVMX_SYNCW
|
||
|
|
#define CVMX_SYNCS CVMX_SYNC
|
||
|
|
#define CVMX_SYNCWS_STR CVMX_SYNCW_STR
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* CVMX_PREPARE_FOR_STORE makes each byte of the block unpredictable
|
||
|
|
* (actually old value or zero) until that byte is stored to (by this or
|
||
|
|
* another processor. Note that the value of each byte is not only
|
||
|
|
* unpredictable, but may also change again - up until the point when one
|
||
|
|
* of the cores stores to the byte.
|
||
|
|
*/
|
||
|
|
#define CVMX_PREPARE_FOR_STORE(address, offset) \
|
||
|
|
asm volatile ("pref 30, " CVMX_TMP_STR(offset) "(%[rbase])" : : \
|
||
|
|
[rbase] "d" (address))
|
||
|
|
/*
|
||
|
|
* This is a command headed to the L2 controller to tell it to clear
|
||
|
|
* its dirty bit for a block. Basically, SW is telling HW that the
|
||
|
|
* current version of the block will not be used.
|
||
|
|
*/
|
||
|
|
#define CVMX_DONT_WRITE_BACK(address, offset) \
|
||
|
|
asm volatile ("pref 29, " CVMX_TMP_STR(offset) "(%[rbase])" : : \
|
||
|
|
[rbase] "d" (address))
|
||
|
|
|
||
|
|
/* flush stores, invalidate entire icache */
|
||
|
|
#define CVMX_ICACHE_INVALIDATE \
|
||
|
|
{ CVMX_SYNC; asm volatile ("synci 0($0)" : : ); }
|
||
|
|
|
||
|
|
/* flush stores, invalidate entire icache */
|
||
|
|
#define CVMX_ICACHE_INVALIDATE2 \
|
||
|
|
{ CVMX_SYNC; asm volatile ("cache 0, 0($0)" : : ); }
|
||
|
|
|
||
|
|
/* complete prefetches, invalidate entire dcache */
|
||
|
|
#define CVMX_DCACHE_INVALIDATE \
|
||
|
|
{ CVMX_SYNC; asm volatile ("cache 9, 0($0)" : : ); }
|
||
|
|
|
||
|
|
#define CVMX_CACHE(op, address, offset) \
|
||
|
|
asm volatile ("cache " CVMX_TMP_STR(op) ", " CVMX_TMP_STR(offset) "(%[rbase])" \
|
||
|
|
: : [rbase] "d" (address) )
|
||
|
|
/* fetch and lock the state. */
|
||
|
|
#define CVMX_CACHE_LCKL2(address, offset) CVMX_CACHE(31, address, offset)
|
||
|
|
/* unlock the state. */
|
||
|
|
#define CVMX_CACHE_WBIL2(address, offset) CVMX_CACHE(23, address, offset)
|
||
|
|
/* invalidate the cache block and clear the USED bits for the block */
|
||
|
|
#define CVMX_CACHE_WBIL2I(address, offset) CVMX_CACHE(3, address, offset)
|
||
|
|
/* load virtual tag and data for the L2 cache block into L2C_TAD0_TAG register */
|
||
|
|
#define CVMX_CACHE_LTGL2I(address, offset) CVMX_CACHE(7, address, offset)
|
||
|
|
|
||
|
|
#define CVMX_POP(result, input) \
|
||
|
|
asm ("pop %[rd],%[rs]" : [rd] "=d" (result) : [rs] "d" (input))
|
||
|
|
#define CVMX_DPOP(result, input) \
|
||
|
|
asm ("dpop %[rd],%[rs]" : [rd] "=d" (result) : [rs] "d" (input))
|
||
|
|
|
||
|
|
/* some new cop0-like stuff */
|
||
|
|
#define CVMX_RDHWR(result, regstr) \
|
||
|
|
asm volatile ("rdhwr %[rt],$" CVMX_TMP_STR(regstr) : [rt] "=d" (result))
|
||
|
|
#define CVMX_RDHWRNV(result, regstr) \
|
||
|
|
asm ("rdhwr %[rt],$" CVMX_TMP_STR(regstr) : [rt] "=d" (result))
|
||
|
|
#endif /* __CVMX_ASM_H__ */
|