mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-27 04:54:41 +08:00
6b3087c64a
Blackfin dual core BF561 processor can support SMP like features. https://docs.blackfin.uclinux.org/doku.php?id=linux-kernel:smp-like In this patch, we provide SMP extend to Blackfin header files and machine common code Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
118 lines
4.0 KiB
C
118 lines
4.0 KiB
C
/*
|
|
* File: include/asm-blackfin/cacheflush.h
|
|
* Based on: include/asm-m68knommu/cacheflush.h
|
|
* Author: LG Soft India
|
|
* Copyright (C) 2004 Analog Devices Inc.
|
|
* Created: Tue Sep 21 2004
|
|
* Description: Blackfin low-level cache routines adapted from the i386
|
|
* and PPC versions by Greg Ungerer (gerg@snapgear.com)
|
|
*
|
|
* Modified:
|
|
*
|
|
* Bugs: Enter bugs at http://blackfin.uclinux.org/
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; see the file COPYING.
|
|
* If not, write to the Free Software Foundation,
|
|
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#ifndef _BLACKFIN_CACHEFLUSH_H
|
|
#define _BLACKFIN_CACHEFLUSH_H
|
|
|
|
extern void blackfin_icache_dcache_flush_range(unsigned long start_address, unsigned long end_address);
|
|
extern void blackfin_icache_flush_range(unsigned long start_address, unsigned long end_address);
|
|
extern void blackfin_dcache_flush_range(unsigned long start_address, unsigned long end_address);
|
|
extern void blackfin_dcache_invalidate_range(unsigned long start_address, unsigned long end_address);
|
|
extern void blackfin_dflush_page(void *page);
|
|
extern void blackfin_invalidate_entire_dcache(void);
|
|
|
|
#define flush_dcache_mmap_lock(mapping) do { } while (0)
|
|
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
|
|
#define flush_cache_mm(mm) do { } while (0)
|
|
#define flush_cache_range(vma, start, end) do { } while (0)
|
|
#define flush_cache_page(vma, vmaddr) do { } while (0)
|
|
#define flush_cache_vmap(start, end) do { } while (0)
|
|
#define flush_cache_vunmap(start, end) do { } while (0)
|
|
|
|
#ifdef CONFIG_SMP
|
|
#define flush_icache_range_others(start, end) \
|
|
smp_icache_flush_range_others((start), (end))
|
|
#else
|
|
#define flush_icache_range_others(start, end) do { } while (0)
|
|
#endif
|
|
|
|
static inline void flush_icache_range(unsigned start, unsigned end)
|
|
{
|
|
#if defined(CONFIG_BFIN_DCACHE) && defined(CONFIG_BFIN_ICACHE)
|
|
|
|
# if defined(CONFIG_BFIN_WT)
|
|
blackfin_icache_flush_range((start), (end));
|
|
flush_icache_range_others(start, end);
|
|
# else
|
|
blackfin_icache_dcache_flush_range((start), (end));
|
|
# endif
|
|
|
|
#else
|
|
|
|
# if defined(CONFIG_BFIN_ICACHE)
|
|
blackfin_icache_flush_range((start), (end));
|
|
flush_icache_range_others(start, end);
|
|
# endif
|
|
# if defined(CONFIG_BFIN_DCACHE)
|
|
blackfin_dcache_flush_range((start), (end));
|
|
# endif
|
|
|
|
#endif
|
|
}
|
|
|
|
#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
|
|
do { memcpy(dst, src, len); \
|
|
flush_icache_range((unsigned) (dst), (unsigned) (dst) + (len)); \
|
|
flush_icache_range_others((unsigned long) (dst), (unsigned long) (dst) + (len));\
|
|
} while (0)
|
|
|
|
#define copy_from_user_page(vma, page, vaddr, dst, src, len) memcpy(dst, src, len)
|
|
|
|
#if defined(CONFIG_BFIN_DCACHE)
|
|
# define invalidate_dcache_range(start,end) blackfin_dcache_invalidate_range((start), (end))
|
|
#else
|
|
# define invalidate_dcache_range(start,end) do { } while (0)
|
|
#endif
|
|
#if defined(CONFIG_BFIN_DCACHE) && defined(CONFIG_BFIN_WB)
|
|
# define flush_dcache_range(start,end) blackfin_dcache_flush_range((start), (end))
|
|
# define flush_dcache_page(page) blackfin_dflush_page(page_address(page))
|
|
#else
|
|
# define flush_dcache_range(start,end) do { } while (0)
|
|
# define flush_dcache_page(page) do { } while (0)
|
|
#endif
|
|
|
|
extern unsigned long reserved_mem_dcache_on;
|
|
extern unsigned long reserved_mem_icache_on;
|
|
|
|
static inline int bfin_addr_dcachable(unsigned long addr)
|
|
{
|
|
#ifdef CONFIG_BFIN_DCACHE
|
|
if (addr < (_ramend - DMA_UNCACHED_REGION))
|
|
return 1;
|
|
#endif
|
|
|
|
if (reserved_mem_dcache_on &&
|
|
addr >= _ramend && addr < physical_mem_end)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif /* _BLACKFIN_ICACHEFLUSH_H */
|