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         return plpar_hcall_norets(H_POLL_PENDING);
   9 }
  10
  11 static inline long prod_processor(void)
  12 {
  13         return plpar_hcall_norets(H_PROD);
  14 }
  15
  16 static inline long cede_processor(void)
  17 {
  18         return plpar_hcall_norets(H_CEDE);
  19 }
  20
  21 static inline long vpa_call(unsigned long flags, unsigned long cpu,
  22                 unsigned long vpa)
  23 {
  24         /* flags are in bits 16-18 (counting from most significant bit) */
  25         flags = flags << (63 - 18);
  26
  27         return plpar_hcall_norets(H_REGISTER_VPA, flags, cpu, vpa);
  28 }
  29
  30 static inline long unregister_vpa(unsigned long cpu, unsigned long vpa)
  31 {
  32         return vpa_call(0x5, cpu, vpa);
  33 }
  34
  35 static inline long register_vpa(unsigned long cpu, unsigned long vpa)
  36 {
  37         return vpa_call(0x1, cpu, vpa);
  38 }
  39
  40 static inline long unregister_slb_shadow(unsigned long cpu, unsigned long vpa)
  41 {
  42         return vpa_call(0x7, cpu, vpa);
  43 }
  44
  45 static inline long register_slb_shadow(unsigned long cpu, unsigned long vpa)
  46 {
  47         return vpa_call(0x3, cpu, vpa);
  48 }
  49
  50 extern void vpa_init(int cpu);
  51
  52 static inline long plpar_pte_enter(unsigned long flags,
  53                 unsigned long hpte_group, unsigned long hpte_v,
  54                 unsigned long hpte_r, unsigned long *slot)
  55 {
  56         long rc;
  57         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
  58
  59         rc = plpar_hcall(H_ENTER, retbuf, flags, hpte_group, hpte_v, hpte_r);
  60
  61         *slot = retbuf[0];
  62
  63         return rc;
  64 }
  65
  66 static inline long plpar_pte_remove(unsigned long flags, unsigned long ptex,
  67                 unsigned long avpn, unsigned long *old_pteh_ret,
  68                 unsigned long *old_ptel_ret)
  69 {
  70         long rc;
  71         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
  72
  73         rc = plpar_hcall(H_REMOVE, retbuf, flags, ptex, avpn);
  74
  75         *old_pteh_ret = retbuf[0];
  76         *old_ptel_ret = retbuf[1];
  77
  78         return rc;
  79 }
  80
  81 static inline long plpar_pte_read(unsigned long flags, unsigned long ptex,
  82                 unsigned long *old_pteh_ret, unsigned long *old_ptel_ret)
  83 {
  84         long rc;
  85         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
  86
  87         rc = plpar_hcall(H_READ, retbuf, flags, ptex);
  88
  89         *old_pteh_ret = retbuf[0];
  90         *old_ptel_ret = retbuf[1];
  91
  92         return rc;
  93 }
  94
  95 static inline long plpar_pte_protect(unsigned long flags, unsigned long ptex,
  96                 unsigned long avpn)
  97 {
  98         return plpar_hcall_norets(H_PROTECT, flags, ptex, avpn);
  99 }
 100
 101 static inline long plpar_tce_get(unsigned long liobn, unsigned long ioba,
 102                 unsigned long *tce_ret)
 103 {
 104         long rc;
 105         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 106
 107         rc = plpar_hcall(H_GET_TCE, retbuf, liobn, ioba);
 108
 109         *tce_ret = retbuf[0];
 110
 111         return rc;
 112 }
 113
 114 static inline long plpar_tce_put(unsigned long liobn, unsigned long ioba,
 115                 unsigned long tceval)
 116 {
 117         return plpar_hcall_norets(H_PUT_TCE, liobn, ioba, tceval);
 118 }
 119
 120 static inline long plpar_tce_put_indirect(unsigned long liobn,
 121                 unsigned long ioba, unsigned long page, unsigned long count)
 122 {
 123         return plpar_hcall_norets(H_PUT_TCE_INDIRECT, liobn, ioba, page, count);
 124 }
 125
 126 static inline long plpar_tce_stuff(unsigned long liobn, unsigned long ioba,
 127                 unsigned long tceval, unsigned long count)
 128 {
 129         return plpar_hcall_norets(H_STUFF_TCE, liobn, ioba, tceval, count);
 130 }
 131
 132 static inline long plpar_get_term_char(unsigned long termno,
 133                 unsigned long *len_ret, char *buf_ret)
 134 {
 135         long rc;
 136         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 137         unsigned long *lbuf = (unsigned long *)buf_ret; /* TODO: alignment? */
 138
 139         rc = plpar_hcall(H_GET_TERM_CHAR, retbuf, termno);
 140
 141         *len_ret = retbuf[0];
 142         lbuf[0] = retbuf[1];
 143         lbuf[1] = retbuf[2];
 144
 145         return rc;
 146 }
 147
 148 static inline long plpar_put_term_char(unsigned long termno, unsigned long len,
 149                 const char *buffer)
 150 {
 151         unsigned long *lbuf = (unsigned long *)buffer;  /* TODO: alignment? */
 152         return plpar_hcall_norets(H_PUT_TERM_CHAR, termno, len, lbuf[0],
 153                         lbuf[1]);
 154 }
 155
 156 static inline long plpar_eoi(unsigned long xirr)
 157 {
 158         return plpar_hcall_norets(H_EOI, xirr);
 159 }
 160
 161 static inline long plpar_cppr(unsigned long cppr)
 162 {
 163         return plpar_hcall_norets(H_CPPR, cppr);
 164 }
 165
 166 static inline long plpar_ipi(unsigned long servernum, unsigned long mfrr)
 167 {
 168         return plpar_hcall_norets(H_IPI, servernum, mfrr);
 169 }
 170
 171 static inline long plpar_xirr(unsigned long *xirr_ret)
 172 {
 173         long rc;
 174         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 175
 176         rc = plpar_hcall(H_XIRR, retbuf);
 177
 178         *xirr_ret = retbuf[0];
 179
 180         return rc;
 181 }
 182
 183 #endif /* _PSERIES_PLPAR_WRAPPERS_H */