arch/csky/abiv1/inc/abi/ckmmu.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
   3
   4 #ifndef __ASM_CSKY_CKMMUV1_H
   5 #define __ASM_CSKY_CKMMUV1_H
   6 #include <abi/reg_ops.h>
   7
   8 static inline int read_mmu_index(void)
   9 {
  10         return cprcr("cpcr0");
  11 }
  12
  13 static inline void write_mmu_index(int value)
  14 {
  15         cpwcr("cpcr0", value);
  16 }
  17
  18 static inline int read_mmu_entrylo0(void)
  19 {
  20         return cprcr("cpcr2") << 6;
  21 }
  22
  23 static inline int read_mmu_entrylo1(void)
  24 {
  25         return cprcr("cpcr3") << 6;
  26 }
  27
  28 static inline void write_mmu_pagemask(int value)
  29 {
  30         cpwcr("cpcr6", value);
  31 }
  32
  33 static inline int read_mmu_entryhi(void)
  34 {
  35         return cprcr("cpcr4");
  36 }
  37
  38 static inline void write_mmu_entryhi(int value)
  39 {
  40         cpwcr("cpcr4", value);
  41 }
  42
  43 /*
  44  * TLB operations.
  45  */
  46 static inline void tlb_probe(void)
  47 {
  48         cpwcr("cpcr8", 0x80000000);
  49 }
  50
  51 static inline void tlb_read(void)
  52 {
  53         cpwcr("cpcr8", 0x40000000);
  54 }
  55
  56 static inline void tlb_invalid_all(void)
  57 {
  58         cpwcr("cpcr8", 0x04000000);
  59 }
  60
  61 static inline void tlb_invalid_indexed(void)
  62 {
  63         cpwcr("cpcr8", 0x02000000);
  64 }
  65
  66 static inline void setup_pgd(unsigned long pgd, bool kernel)
  67 {
  68         cpwcr("cpcr29", pgd);
  69 }
  70
  71 static inline unsigned long get_pgd(void)
  72 {
  73         return cprcr("cpcr29");
  74 }
  75 #endif /* __ASM_CSKY_CKMMUV1_H */