Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-10 22:21:40 +00:00
Code Issues Packages Projects Releases Wiki Activity

csky: Use va_pa_offset instead of phys_offset

Browse Source 
The name of phys_offset is so common for global export and it may
conflict with some local name. So change phys_offset to va_pa_offset
which also used by riscv.

Also use __pa() and __va() instead of using phys_offset directly.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Cc: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Guo Ren 2019-04-19 17:10:52 +08:00
parent 205353fa06
commit 683fafebf9
7 changed files with 21 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/csky/abiv1/inc/abi/ckmmu.h
View File

@ -85,11 +85,11 @@ static inline void tlb_invalid_indexed(void)
static inline void setup_pgd(unsigned long pgd, bool kernel)
{
cpwcr("cpcr29", pgd);
cpwcr("cpcr29", pgd | BIT(0));
}
static inline unsigned long get_pgd(void)
{
return cprcr("cpcr29");
return cprcr("cpcr29") & ~BIT(0);
}
#endif /* __ASM_CSKY_CKMMUV1_H */

14
arch/csky/abiv2/inc/abi/ckmmu.h
View File

@ -90,18 +90,16 @@ static inline void tlb_invalid_indexed(void)
mtcr("cr<8, 15>", 0x02000000);
}
/* setup hardrefil pgd */
static inline unsigned long get_pgd(void)
{
return mfcr("cr<29, 15>");
}
static inline void setup_pgd(unsigned long pgd, bool kernel)
{
if (kernel)
mtcr("cr<28, 15>", pgd);
mtcr("cr<28, 15>", pgd | BIT(0));
else
mtcr("cr<29, 15>", pgd);
mtcr("cr<29, 15>", pgd | BIT(0));
}
static inline unsigned long get_pgd(void)
{
return mfcr("cr<29, 15>") & ~BIT(0);
}
#endif /* __ASM_CSKY_CKMMUV2_H */

17
arch/csky/include/asm/mmu_context.h
View File

@ -14,23 +14,10 @@
#include <linux/sched.h>
#include <abi/ckmmu.h>
static inline void tlbmiss_handler_setup_pgd(unsigned long pgd, bool kernel)
{
pgd -= PAGE_OFFSET;
pgd += phys_offset;
pgd |= 1;
setup_pgd(pgd, kernel);
}
#define TLBMISS_HANDLER_SETUP_PGD(pgd) \
tlbmiss_handler_setup_pgd((unsigned long)pgd, 0)
setup_pgd(__pa(pgd), false)
#define TLBMISS_HANDLER_SETUP_PGD_KERNEL(pgd) \
tlbmiss_handler_setup_pgd((unsigned long)pgd, 1)
static inline unsigned long tlb_get_pgd(void)
{
return ((get_pgd() - phys_offset) & ~1) + PAGE_OFFSET;
}
setup_pgd(__pa(pgd), true)
#define cpu_context(cpu, mm) ((mm)->context.asid[cpu])
#define cpu_asid(cpu, mm) (cpu_context((cpu), (mm)) & ASID_MASK)

10
arch/csky/include/asm/page.h
View File

@ -72,13 +72,13 @@ typedef struct page *pgtable_t;
#define __pgd(x) ((pgd_t) { (x) })
#define __pgprot(x) ((pgprot_t) { (x) })
extern unsigned long phys_offset;
extern unsigned long va_pa_offset;
#define ARCH_PFN_OFFSET PFN_DOWN(phys_offset + PHYS_OFFSET_OFFSET)
#define ARCH_PFN_OFFSET PFN_DOWN(va_pa_offset + PHYS_OFFSET_OFFSET)
#define __pa(x) ((unsigned long)(x) - PAGE_OFFSET + va_pa_offset)
#define __va(x) ((void *)((unsigned long)(x) + PAGE_OFFSET - va_pa_offset))
#define __pa(x) ((unsigned long)(x) - PAGE_OFFSET + phys_offset)
#define __va(x) ((void *)((unsigned long)(x) + PAGE_OFFSET - \
phys_offset))
#define __pa_symbol(x) __pa(RELOC_HIDE((unsigned long)(x), 0))
#define MAP_NR(x) PFN_DOWN((unsigned long)(x) - PAGE_OFFSET - \

4
arch/csky/kernel/entry.S
View File

@ -40,7 +40,7 @@ ENTRY(csky_\name)
WR_MCIR a2
#endif
bclri r6, 0
lrw a2, phys_offset
lrw a2, va_pa_offset
ld.w a2, (a2, 0)
subu r6, a2
bseti r6, 31
@ -51,7 +51,7 @@ ENTRY(csky_\name)
addu r6, a2
ldw r6, (r6)
lrw a2, phys_offset
lrw a2, va_pa_offset
ld.w a2, (a2, 0)
subu r6, a2
bseti r6, 31

6
arch/csky/kernel/setup.c
View File

@ -142,8 +142,8 @@ void __init setup_arch(char **cmdline_p)
#endif
}
unsigned long phys_offset;
EXPORT_SYMBOL(phys_offset);
unsigned long va_pa_offset;
EXPORT_SYMBOL(va_pa_offset);
asmlinkage __visible void __init csky_start(unsigned int unused,
void *dtb_start)
@ -151,7 +151,7 @@ asmlinkage __visible void __init csky_start(unsigned int unused,
/* Clean up bss section */
memset(__bss_start, 0, __bss_stop - __bss_start);
phys_offset = read_mmu_msa0() & ~(SSEG_SIZE - 1);
va_pa_offset = read_mmu_msa0() & ~(SSEG_SIZE - 1);
pre_trap_init();
pre_mmu_init();

2
arch/csky/mm/fault.c
View File

@ -81,7 +81,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write,
unsigned long pgd_base;
pgd_base = tlb_get_pgd();
pgd_base = __va(get_pgd());
pgd = (pgd_t *)pgd_base + offset;
pgd_k = init_mm.pgd + offset;