mirror of
https://github.com/torvalds/linux.git
synced 2024-11-01 01:31:44 +00:00
98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
#ifndef _ASM_M32R_TLBFLUSH_H
|
|
#define _ASM_M32R_TLBFLUSH_H
|
|
|
|
#include <asm/m32r.h>
|
|
|
|
/*
|
|
* TLB flushing:
|
|
*
|
|
* - flush_tlb() flushes the current mm struct TLBs
|
|
* - flush_tlb_all() flushes all processes TLBs
|
|
* - flush_tlb_mm(mm) flushes the specified mm context TLB's
|
|
* - flush_tlb_page(vma, vmaddr) flushes one page
|
|
* - flush_tlb_range(vma, start, end) flushes a range of pages
|
|
* - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
|
|
*/
|
|
|
|
extern void local_flush_tlb_all(void);
|
|
extern void local_flush_tlb_mm(struct mm_struct *);
|
|
extern void local_flush_tlb_page(struct vm_area_struct *, unsigned long);
|
|
extern void local_flush_tlb_range(struct vm_area_struct *, unsigned long,
|
|
unsigned long);
|
|
|
|
#ifndef CONFIG_SMP
|
|
#ifdef CONFIG_MMU
|
|
#define flush_tlb_all() local_flush_tlb_all()
|
|
#define flush_tlb_mm(mm) local_flush_tlb_mm(mm)
|
|
#define flush_tlb_page(vma, page) local_flush_tlb_page(vma, page)
|
|
#define flush_tlb_range(vma, start, end) \
|
|
local_flush_tlb_range(vma, start, end)
|
|
#define flush_tlb_kernel_range(start, end) local_flush_tlb_all()
|
|
#else /* CONFIG_MMU */
|
|
#define flush_tlb_all() do { } while (0)
|
|
#define flush_tlb_mm(mm) do { } while (0)
|
|
#define flush_tlb_page(vma, vmaddr) do { } while (0)
|
|
#define flush_tlb_range(vma, start, end) do { } while (0)
|
|
#endif /* CONFIG_MMU */
|
|
#else /* CONFIG_SMP */
|
|
extern void smp_flush_tlb_all(void);
|
|
extern void smp_flush_tlb_mm(struct mm_struct *);
|
|
extern void smp_flush_tlb_page(struct vm_area_struct *, unsigned long);
|
|
extern void smp_flush_tlb_range(struct vm_area_struct *, unsigned long,
|
|
unsigned long);
|
|
|
|
#define flush_tlb_all() smp_flush_tlb_all()
|
|
#define flush_tlb_mm(mm) smp_flush_tlb_mm(mm)
|
|
#define flush_tlb_page(vma, page) smp_flush_tlb_page(vma, page)
|
|
#define flush_tlb_range(vma, start, end) \
|
|
smp_flush_tlb_range(vma, start, end)
|
|
#define flush_tlb_kernel_range(start, end) smp_flush_tlb_all()
|
|
#endif /* CONFIG_SMP */
|
|
|
|
static __inline__ void __flush_tlb_page(unsigned long page)
|
|
{
|
|
unsigned int tmpreg0, tmpreg1, tmpreg2;
|
|
|
|
__asm__ __volatile__ (
|
|
"seth %0, #high(%4) \n\t"
|
|
"st %3, @(%5, %0) \n\t"
|
|
"ldi %1, #1 \n\t"
|
|
"st %1, @(%6, %0) \n\t"
|
|
"add3 %1, %0, %7 \n\t"
|
|
".fillinsn \n"
|
|
"1: \n\t"
|
|
"ld %2, @(%6, %0) \n\t"
|
|
"bnez %2, 1b \n\t"
|
|
"ld %0, @%1+ \n\t"
|
|
"ld %1, @%1 \n\t"
|
|
"st %2, @+%0 \n\t"
|
|
"st %2, @+%1 \n\t"
|
|
: "=&r" (tmpreg0), "=&r" (tmpreg1), "=&r" (tmpreg2)
|
|
: "r" (page), "i" (MMU_REG_BASE), "i" (MSVA_offset),
|
|
"i" (MTOP_offset), "i" (MIDXI_offset)
|
|
: "memory"
|
|
);
|
|
}
|
|
|
|
static __inline__ void __flush_tlb_all(void)
|
|
{
|
|
unsigned int tmpreg0, tmpreg1;
|
|
|
|
__asm__ __volatile__ (
|
|
"seth %0, #high(%2) \n\t"
|
|
"or3 %0, %0, #low(%2) \n\t"
|
|
"ldi %1, #0xc \n\t"
|
|
"st %1, @%0 \n\t"
|
|
".fillinsn \n"
|
|
"1: \n\t"
|
|
"ld %1, @%0 \n\t"
|
|
"bnez %1, 1b \n\t"
|
|
: "=&r" (tmpreg0), "=&r" (tmpreg1)
|
|
: "i" (MTOP) : "memory"
|
|
);
|
|
}
|
|
|
|
extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t);
|
|
|
|
#endif /* _ASM_M32R_TLBFLUSH_H */
|