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 /* plpar_pte_read_raw can be called in real mode. It calls plpar_hcall_raw */
 112 static inline long plpar_pte_read_raw(unsigned long flags, unsigned long ptex,
 113                 unsigned long *old_pteh_ret, unsigned long *old_ptel_ret)
 114 {
 115         long rc;
 116         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 117
 118         rc = plpar_hcall_raw(H_READ, retbuf, flags, ptex);
 119
 120         *old_pteh_ret = retbuf[0];
 121         *old_ptel_ret = retbuf[1];
 122
 123         return rc;
 124 }
 125
 126 static inline long plpar_pte_protect(unsigned long flags, unsigned long ptex,
 127                 unsigned long avpn)
 128 {
 129         return plpar_hcall_norets(H_PROTECT, flags, ptex, avpn);
 130 }
 131
 132 static inline long plpar_tce_get(unsigned long liobn, unsigned long ioba,
 133                 unsigned long *tce_ret)
 134 {
 135         long rc;
 136         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 137
 138         rc = plpar_hcall(H_GET_TCE, retbuf, liobn, ioba);
 139
 140         *tce_ret = retbuf[0];
 141
 142         return rc;
 143 }
 144
 145 static inline long plpar_tce_put(unsigned long liobn, unsigned long ioba,
 146                 unsigned long tceval)
 147 {
 148         return plpar_hcall_norets(H_PUT_TCE, liobn, ioba, tceval);
 149 }
 150
 151 static inline long plpar_tce_put_indirect(unsigned long liobn,
 152                 unsigned long ioba, unsigned long page, unsigned long count)
 153 {
 154         return plpar_hcall_norets(H_PUT_TCE_INDIRECT, liobn, ioba, page, count);
 155 }
 156
 157 static inline long plpar_tce_stuff(unsigned long liobn, unsigned long ioba,
 158                 unsigned long tceval, unsigned long count)
 159 {
 160         return plpar_hcall_norets(H_STUFF_TCE, liobn, ioba, tceval, count);
 161 }
 162
 163 static inline long plpar_get_term_char(unsigned long termno,
 164                 unsigned long *len_ret, char *buf_ret)
 165 {
 166         long rc;
 167         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 168         unsigned long *lbuf = (unsigned long *)buf_ret; /* TODO: alignment? */
 169
 170         rc = plpar_hcall(H_GET_TERM_CHAR, retbuf, termno);
 171
 172         *len_ret = retbuf[0];
 173         lbuf[0] = retbuf[1];
 174         lbuf[1] = retbuf[2];
 175
 176         return rc;
 177 }
 178
 179 static inline long plpar_put_term_char(unsigned long termno, unsigned long len,
 180                 const char *buffer)
 181 {
 182         unsigned long *lbuf = (unsigned long *)buffer;  /* TODO: alignment? */
 183         return plpar_hcall_norets(H_PUT_TERM_CHAR, termno, len, lbuf[0],
 184                         lbuf[1]);
 185 }
 186
 187 static inline long plpar_eoi(unsigned long xirr)
 188 {
 189         return plpar_hcall_norets(H_EOI, xirr);
 190 }
 191
 192 static inline long plpar_cppr(unsigned long cppr)
 193 {
 194         return plpar_hcall_norets(H_CPPR, cppr);
 195 }
 196
 197 static inline long plpar_ipi(unsigned long servernum, unsigned long mfrr)
 198 {
 199         return plpar_hcall_norets(H_IPI, servernum, mfrr);
 200 }
 201
 202 static inline long plpar_xirr(unsigned long *xirr_ret)
 203 {
 204         long rc;
 205         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 206
 207         rc = plpar_hcall(H_XIRR, retbuf);
 208
 209         *xirr_ret = retbuf[0];
 210
 211         return rc;
 212 }
 213
 214 #endif /* _PSERIES_PLPAR_WRAPPERS_H */