Release 4.8 arch/sh/mm/cache-sh3.c
/*
* arch/sh/mm/cache-sh3.c
*
* Copyright (C) 1999, 2000 Niibe Yutaka
* Copyright (C) 2002 Paul Mundt
*
* Released under the terms of the GNU GPL v2.0.
*/
#include <linux/init.h>
#include <linux/mman.h>
#include <linux/mm.h>
#include <linux/threads.h>
#include <asm/addrspace.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
#include <asm/cache.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <asm/pgalloc.h>
#include <asm/mmu_context.h>
#include <asm/cacheflush.h>
/*
* Write back the dirty D-caches, but not invalidate them.
*
* Is this really worth it, or should we just alias this routine
* to __flush_purge_region too?
*
* START: Virtual Address (U0, P1, or P3)
* SIZE: Size of the region.
*/
static void sh3__flush_wback_region(void *start, int size)
{
unsigned long v, j;
unsigned long begin, end;
unsigned long flags;
begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
& ~(L1_CACHE_BYTES-1);
for (v = begin; v < end; v+=L1_CACHE_BYTES) {
unsigned long addrstart = CACHE_OC_ADDRESS_ARRAY;
for (j = 0; j < current_cpu_data.dcache.ways; j++) {
unsigned long data, addr, p;
p = __pa(v);
addr = addrstart | (v & current_cpu_data.dcache.entry_mask);
local_irq_save(flags);
data = __raw_readl(addr);
if ((data & CACHE_PHYSADDR_MASK) ==
(p & CACHE_PHYSADDR_MASK)) {
data &= ~SH_CACHE_UPDATED;
__raw_writel(data, addr);
local_irq_restore(flags);
break;
}
local_irq_restore(flags);
addrstart += current_cpu_data.dcache.way_incr;
}
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| linus torvalds | linus torvalds | 163 | 83.16% | 1 | 16.67% |
| paul mundt | paul mundt | 20 | 10.20% | 4 | 66.67% |
| andrew morton | andrew morton | 13 | 6.63% | 1 | 16.67% |
| Total | 196 | 100.00% | 6 | 100.00% |
/*
* Write back the dirty D-caches and invalidate them.
*
* START: Virtual Address (U0, P1, or P3)
* SIZE: Size of the region.
*/
static void sh3__flush_purge_region(void *start, int size)
{
unsigned long v;
unsigned long begin, end;
begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
& ~(L1_CACHE_BYTES-1);
for (v = begin; v < end; v+=L1_CACHE_BYTES) {
unsigned long data, addr;
data = (v & 0xfffffc00); /* _Virtual_ address, ~U, ~V */
addr = CACHE_OC_ADDRESS_ARRAY |
(v & current_cpu_data.dcache.entry_mask) | SH_CACHE_ASSOC;
__raw_writel(data, addr);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| linus torvalds | linus torvalds | 106 | 92.17% | 1 | 20.00% |
| paul mundt | paul mundt | 9 | 7.83% | 4 | 80.00% |
| Total | 115 | 100.00% | 5 | 100.00% |
void __init sh3_cache_init(void)
{
__flush_wback_region = sh3__flush_wback_region;
__flush_purge_region = sh3__flush_purge_region;
/*
* No write back please
*
* Except I don't think there's any way to avoid the writeback.
* So we just alias it to sh3__flush_purge_region(). dwmw2.
*/
__flush_invalidate_region = sh3__flush_purge_region;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| paul mundt | paul mundt | 17 | 80.95% | 1 | 50.00% |
| linus torvalds | linus torvalds | 4 | 19.05% | 1 | 50.00% |
| Total | 21 | 100.00% | 2 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| linus torvalds | linus torvalds | 314 | 83.29% | 1 | 14.29% |
| paul mundt | paul mundt | 50 | 13.26% | 5 | 71.43% |
| andrew morton | andrew morton | 13 | 3.45% | 1 | 14.29% |
| Total | 377 | 100.00% | 7 | 100.00% |
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