/arch/score/include/asm/tlbflush.h

  1#ifndef _ASM_SCORE_TLBFLUSH_H
  2#define _ASM_SCORE_TLBFLUSH_H
  3
  4#include <linux/mm.h>
  5
  6/*
  7 * TLB flushing:
  8 *
  9 * - flush_tlb_all() flushes all processes TLB entries
 10 * - flush_tlb_mm(mm) flushes the specified mm context TLB entries
 11 * - flush_tlb_page(vma, vmaddr) flushes one page
 12 * - flush_tlb_range(vma, start, end) flushes a range of pages
 13 * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
 14 */
 15extern void local_flush_tlb_all(void);
 16extern void local_flush_tlb_mm(struct mm_struct *mm);
 17extern void local_flush_tlb_range(struct vm_area_struct *vma,
 18	unsigned long start, unsigned long end);
 19extern void local_flush_tlb_kernel_range(unsigned long start,
 20	unsigned long end);
 21extern void local_flush_tlb_page(struct vm_area_struct *vma,
 22	unsigned long page);
 23extern void local_flush_tlb_one(unsigned long vaddr);
 24
 25#define flush_tlb_all()			local_flush_tlb_all()
 26#define flush_tlb_mm(mm)		local_flush_tlb_mm(mm)
 27#define flush_tlb_range(vma, vmaddr, end) \
 28	local_flush_tlb_range(vma, vmaddr, end)
 29#define flush_tlb_kernel_range(vmaddr, end) \
 30	local_flush_tlb_kernel_range(vmaddr, end)
 31#define flush_tlb_page(vma, page)	local_flush_tlb_page(vma, page)
 32#define flush_tlb_one(vaddr)		local_flush_tlb_one(vaddr)
 33
 34#ifndef __ASSEMBLY__
 35
 36static inline unsigned long pevn_get(void)
 37{
 38	unsigned long val;
 39
 40	__asm__ __volatile__(
 41		"mfcr %0, cr11\n"
 42		"nop\nnop\n"
 43		: "=r" (val));
 44
 45	return val;
 46}
 47
 48static inline void pevn_set(unsigned long val)
 49{
 50	__asm__ __volatile__(
 51		"mtcr %0, cr11\n"
 52		"nop\nnop\nnop\nnop\nnop\n"
 53	: : "r" (val));
 54}
 55
 56static inline void pectx_set(unsigned long val)
 57{
 58	__asm__ __volatile__(
 59		"mtcr %0, cr12\n"
 60		"nop\nnop\nnop\nnop\nnop\n"
 61	: : "r" (val));
 62}
 63
 64static inline unsigned long pectx_get(void)
 65{
 66	unsigned long val;
 67	__asm__ __volatile__(
 68		"mfcr %0, cr12\n"
 69		"nop\nnop\n"
 70	: "=r" (val));
 71	return val;
 72}
 73static inline unsigned long tlblock_get(void)
 74{
 75	unsigned long val;
 76
 77	__asm__ __volatile__(
 78		"mfcr %0, cr7\n"
 79		"nop\nnop\n"
 80	: "=r" (val));
 81	return val;
 82}
 83static inline void tlblock_set(unsigned long val)
 84{
 85	__asm__ __volatile__(
 86		"mtcr %0, cr7\n"
 87		"nop\nnop\nnop\nnop\nnop\n"
 88	: : "r" (val));
 89}
 90
 91static inline void tlbpt_set(unsigned long val)
 92{
 93	__asm__ __volatile__(
 94		"mtcr %0, cr8\n"
 95		"nop\nnop\nnop\nnop\nnop\n"
 96		: : "r" (val));
 97}
 98
 99static inline long tlbpt_get(void)
100{
101	long val;
102
103	__asm__ __volatile__(
104		"mfcr %0, cr8\n"
105		"nop\nnop\n"
106		: "=r" (val));
107
108	return val;
109}
110
111static inline void peaddr_set(unsigned long val)
112{
113	__asm__ __volatile__(
114		"mtcr %0, cr9\n"
115		"nop\nnop\nnop\nnop\nnop\n"
116		: : "r" (val));
117}
118
119/* TLB operations. */
120static inline void tlb_probe(void)
121{
122	__asm__ __volatile__("stlb;nop;nop;nop;nop;nop");
123}
124
125static inline void tlb_read(void)
126{
127	__asm__ __volatile__("mftlb;nop;nop;nop;nop;nop");
128}
129
130static inline void tlb_write_indexed(void)
131{
132	__asm__ __volatile__("mtptlb;nop;nop;nop;nop;nop");
133}
134
135static inline void tlb_write_random(void)
136{
137	__asm__ __volatile__("mtrtlb;nop;nop;nop;nop;nop");
138}
139
140#endif /* Not __ASSEMBLY__ */
141
142#endif /* _ASM_SCORE_TLBFLUSH_H */