Contributors: 10
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Oliver O'Halloran |
172 |
38.48% |
2 |
13.33% |
| Christophe Leroy |
150 |
33.56% |
2 |
13.33% |
| Aneesh Kumar K.V |
62 |
13.87% |
2 |
13.33% |
| Anton Blanchard |
32 |
7.16% |
2 |
13.33% |
| Linus Torvalds |
13 |
2.91% |
2 |
13.33% |
| Benjamin Herrenschmidt |
8 |
1.79% |
1 |
6.67% |
| Alastair D'Silva |
4 |
0.89% |
1 |
6.67% |
| Cédric Le Goater |
3 |
0.67% |
1 |
6.67% |
| Thomas Gleixner |
2 |
0.45% |
1 |
6.67% |
| Paul Mackerras |
1 |
0.22% |
1 |
6.67% |
| Total |
447 |
|
15 |
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright(c) 2017 IBM Corporation. All rights reserved.
*/
#include <linux/string.h>
#include <linux/export.h>
#include <linux/uaccess.h>
#include <linux/libnvdimm.h>
#include <asm/cacheflush.h>
static inline void __clean_pmem_range(unsigned long start, unsigned long stop)
{
unsigned long shift = l1_dcache_shift();
unsigned long bytes = l1_dcache_bytes();
void *addr = (void *)(start & ~(bytes - 1));
unsigned long size = stop - (unsigned long)addr + (bytes - 1);
unsigned long i;
for (i = 0; i < size >> shift; i++, addr += bytes)
asm volatile(PPC_DCBSTPS(%0, %1): :"i"(0), "r"(addr): "memory");
}
static inline void __flush_pmem_range(unsigned long start, unsigned long stop)
{
unsigned long shift = l1_dcache_shift();
unsigned long bytes = l1_dcache_bytes();
void *addr = (void *)(start & ~(bytes - 1));
unsigned long size = stop - (unsigned long)addr + (bytes - 1);
unsigned long i;
for (i = 0; i < size >> shift; i++, addr += bytes)
asm volatile(PPC_DCBFPS(%0, %1): :"i"(0), "r"(addr): "memory");
}
static inline void clean_pmem_range(unsigned long start, unsigned long stop)
{
if (cpu_has_feature(CPU_FTR_ARCH_207S))
return __clean_pmem_range(start, stop);
}
static inline void flush_pmem_range(unsigned long start, unsigned long stop)
{
if (cpu_has_feature(CPU_FTR_ARCH_207S))
return __flush_pmem_range(start, stop);
}
/*
* CONFIG_ARCH_HAS_PMEM_API symbols
*/
void arch_wb_cache_pmem(void *addr, size_t size)
{
unsigned long start = (unsigned long) addr;
clean_pmem_range(start, start + size);
}
EXPORT_SYMBOL_GPL(arch_wb_cache_pmem);
void arch_invalidate_pmem(void *addr, size_t size)
{
unsigned long start = (unsigned long) addr;
flush_pmem_range(start, start + size);
}
EXPORT_SYMBOL_GPL(arch_invalidate_pmem);
/*
* CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE symbols
*/
size_t copy_from_user_flushcache(void *dest, const void __user *src,
size_t size)
{
unsigned long not_copied, start = (unsigned long) dest;
src = mask_user_address(src);
not_copied = __copy_from_user(dest, src, size);
clean_pmem_range(start, start + size);
return not_copied;
}
void memcpy_flushcache(void *dest, const void *src, size_t size)
{
unsigned long start = (unsigned long) dest;
memcpy(dest, src, size);
clean_pmem_range(start, start + size);
}
EXPORT_SYMBOL(memcpy_flushcache);