arch/powerpc/platforms/pseries/plpar_wrappers.h

   1 #ifndef _PSERIES_PLPAR_WRAPPERS_H
   2 #define _PSERIES_PLPAR_WRAPPERS_H
   3
   4 #include <asm/hvcall.h>
   5
   6 static inline long poll_pending(void)
   7 {
   8         unsigned long dummy;
   9         return plpar_hcall(H_POLL_PENDING, 0, 0, 0, 0, &dummy, &dummy, &dummy);
  10 }
  11
  12 static inline long prod_processor(void)
  13 {
  14         plpar_hcall_norets(H_PROD);
  15         return 0;
  16 }
  17
  18 static inline long cede_processor(void)
  19 {
  20         plpar_hcall_norets(H_CEDE);
  21         return 0;
  22 }
  23
  24 static inline long vpa_call(unsigned long flags, unsigned long cpu,
  25                 unsigned long vpa)
  26 {
  27         /* flags are in bits 16-18 (counting from most significant bit) */
  28         flags = flags << (63 - 18);
  29
  30         return plpar_hcall_norets(H_REGISTER_VPA, flags, cpu, vpa);
  31 }
  32
  33 static inline long unregister_vpa(unsigned long cpu, unsigned long vpa)
  34 {
  35         return vpa_call(0x5, cpu, vpa);
  36 }
  37
  38 static inline long register_vpa(unsigned long cpu, unsigned long vpa)
  39 {
  40         return vpa_call(0x1, cpu, vpa);
  41 }
  42
  43 extern void vpa_init(int cpu);
  44
  45 static inline long plpar_pte_remove(unsigned long flags, unsigned long ptex,
  46                 unsigned long avpn, unsigned long *old_pteh_ret,
  47                 unsigned long *old_ptel_ret)
  48 {
  49         unsigned long dummy;
  50         return plpar_hcall(H_REMOVE, flags, ptex, avpn, 0, old_pteh_ret,
  51                         old_ptel_ret, &dummy);
  52 }
  53
  54 static inline long plpar_pte_read(unsigned long flags, unsigned long ptex,
  55                 unsigned long *old_pteh_ret, unsigned long *old_ptel_ret)
  56 {
  57         unsigned long dummy;
  58         return plpar_hcall(H_READ, flags, ptex, 0, 0, old_pteh_ret,
  59                         old_ptel_ret, &dummy);
  60 }
  61
  62 static inline long plpar_pte_protect(unsigned long flags, unsigned long ptex,
  63                 unsigned long avpn)
  64 {
  65         return plpar_hcall_norets(H_PROTECT, flags, ptex, avpn);
  66 }
  67
  68 static inline long plpar_tce_get(unsigned long liobn, unsigned long ioba,
  69                 unsigned long *tce_ret)
  70 {
  71         unsigned long dummy;
  72         return plpar_hcall(H_GET_TCE, liobn, ioba, 0, 0, tce_ret, &dummy,
  73                         &dummy);
  74 }
  75
  76 static inline long plpar_tce_put(unsigned long liobn, unsigned long ioba,
  77                 unsigned long tceval)
  78 {
  79         return plpar_hcall_norets(H_PUT_TCE, liobn, ioba, tceval);
  80 }
  81
  82 static inline long plpar_tce_put_indirect(unsigned long liobn,
  83                 unsigned long ioba, unsigned long page, unsigned long count)
  84 {
  85         return plpar_hcall_norets(H_PUT_TCE_INDIRECT, liobn, ioba, page, count);
  86 }
  87
  88 static inline long plpar_tce_stuff(unsigned long liobn, unsigned long ioba,
  89                 unsigned long tceval, unsigned long count)
  90 {
  91         return plpar_hcall_norets(H_STUFF_TCE, liobn, ioba, tceval, count);
  92 }
  93
  94 static inline long plpar_get_term_char(unsigned long termno,
  95                 unsigned long *len_ret, char *buf_ret)
  96 {
  97         unsigned long *lbuf = (unsigned long *)buf_ret; /* TODO: alignment? */
  98         return plpar_hcall(H_GET_TERM_CHAR, termno, 0, 0, 0, len_ret,
  99                         lbuf + 0, lbuf + 1);
 100 }
 101
 102 static inline long plpar_put_term_char(unsigned long termno, unsigned long len,
 103                 const char *buffer)
 104 {
 105         unsigned long *lbuf = (unsigned long *)buffer;  /* TODO: alignment? */
 106         return plpar_hcall_norets(H_PUT_TERM_CHAR, termno, len, lbuf[0],
 107                         lbuf[1]);
 108 }
 109
 110 #endif /* _PSERIES_PLPAR_WRAPPERS_H */