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 /* plpar_pte_remove_raw can be called in real mode. It calls plpar_hcall_raw */
  82 static inline long plpar_pte_remove_raw(unsigned long flags, unsigned long ptex,
  83                 unsigned long avpn, unsigned long *old_pteh_ret,
  84                 unsigned long *old_ptel_ret)
  85 {
  86         long rc;
  87         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
  88
  89         rc = plpar_hcall_raw(H_REMOVE, retbuf, flags, ptex, avpn);
  90
  91         *old_pteh_ret = retbuf[0];
  92         *old_ptel_ret = retbuf[1];
  93
  94         return rc;
  95 }
  96
  97 static inline long plpar_pte_read(unsigned long flags, unsigned long ptex,
  98                 unsigned long *old_pteh_ret, unsigned long *old_ptel_ret)
  99 {
 100         long rc;
 101         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 102
 103         rc = plpar_hcall(H_READ, retbuf, flags, ptex);
 104
 105         *old_pteh_ret = retbuf[0];
 106         *old_ptel_ret = retbuf[1];
 107
 108         return rc;
 109 }
 110
 111 static inline long plpar_pte_protect(unsigned long flags, unsigned long ptex,
 112                 unsigned long avpn)
 113 {
 114         return plpar_hcall_norets(H_PROTECT, flags, ptex, avpn);
 115 }
 116
 117 static inline long plpar_tce_get(unsigned long liobn, unsigned long ioba,
 118                 unsigned long *tce_ret)
 119 {
 120         long rc;
 121         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 122
 123         rc = plpar_hcall(H_GET_TCE, retbuf, liobn, ioba);
 124
 125         *tce_ret = retbuf[0];
 126
 127         return rc;
 128 }
 129
 130 static inline long plpar_tce_put(unsigned long liobn, unsigned long ioba,
 131                 unsigned long tceval)
 132 {
 133         return plpar_hcall_norets(H_PUT_TCE, liobn, ioba, tceval);
 134 }
 135
 136 static inline long plpar_tce_put_indirect(unsigned long liobn,
 137                 unsigned long ioba, unsigned long page, unsigned long count)
 138 {
 139         return plpar_hcall_norets(H_PUT_TCE_INDIRECT, liobn, ioba, page, count);
 140 }
 141
 142 static inline long plpar_tce_stuff(unsigned long liobn, unsigned long ioba,
 143                 unsigned long tceval, unsigned long count)
 144 {
 145         return plpar_hcall_norets(H_STUFF_TCE, liobn, ioba, tceval, count);
 146 }
 147
 148 static inline long plpar_get_term_char(unsigned long termno,
 149                 unsigned long *len_ret, char *buf_ret)
 150 {
 151         long rc;
 152         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 153         unsigned long *lbuf = (unsigned long *)buf_ret; /* TODO: alignment? */
 154
 155         rc = plpar_hcall(H_GET_TERM_CHAR, retbuf, termno);
 156
 157         *len_ret = retbuf[0];
 158         lbuf[0] = retbuf[1];
 159         lbuf[1] = retbuf[2];
 160
 161         return rc;
 162 }
 163
 164 static inline long plpar_put_term_char(unsigned long termno, unsigned long len,
 165                 const char *buffer)
 166 {
 167         unsigned long *lbuf = (unsigned long *)buffer;  /* TODO: alignment? */
 168         return plpar_hcall_norets(H_PUT_TERM_CHAR, termno, len, lbuf[0],
 169                         lbuf[1]);
 170 }
 171
 172 static inline long plpar_eoi(unsigned long xirr)
 173 {
 174         return plpar_hcall_norets(H_EOI, xirr);
 175 }
 176
 177 static inline long plpar_cppr(unsigned long cppr)
 178 {
 179         return plpar_hcall_norets(H_CPPR, cppr);
 180 }
 181
 182 static inline long plpar_ipi(unsigned long servernum, unsigned long mfrr)
 183 {
 184         return plpar_hcall_norets(H_IPI, servernum, mfrr);
 185 }
 186
 187 static inline long plpar_xirr(unsigned long *xirr_ret)
 188 {
 189         long rc;
 190         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 191
 192         rc = plpar_hcall(H_XIRR, retbuf);
 193
 194         *xirr_ret = retbuf[0];
 195
 196         return rc;
 197 }
 198
 199 #endif /* _PSERIES_PLPAR_WRAPPERS_H */