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 cede_processor(void)
  12 {
  13         return plpar_hcall_norets(H_CEDE);
  14 }
  15
  16 static inline long vpa_call(unsigned long flags, unsigned long cpu,
  17                 unsigned long vpa)
  18 {
  19         /* flags are in bits 16-18 (counting from most significant bit) */
  20         flags = flags << (63 - 18);
  21
  22         return plpar_hcall_norets(H_REGISTER_VPA, flags, cpu, vpa);
  23 }
  24
  25 static inline long unregister_vpa(unsigned long cpu, unsigned long vpa)
  26 {
  27         return vpa_call(0x5, cpu, vpa);
  28 }
  29
  30 static inline long register_vpa(unsigned long cpu, unsigned long vpa)
  31 {
  32         return vpa_call(0x1, cpu, vpa);
  33 }
  34
  35 static inline long unregister_slb_shadow(unsigned long cpu, unsigned long vpa)
  36 {
  37         return vpa_call(0x7, cpu, vpa);
  38 }
  39
  40 static inline long register_slb_shadow(unsigned long cpu, unsigned long vpa)
  41 {
  42         return vpa_call(0x3, cpu, vpa);
  43 }
  44
  45 extern void vpa_init(int cpu);
  46
  47 static inline long plpar_pte_enter(unsigned long flags,
  48                 unsigned long hpte_group, unsigned long hpte_v,
  49                 unsigned long hpte_r, unsigned long *slot)
  50 {
  51         long rc;
  52         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
  53
  54         rc = plpar_hcall(H_ENTER, retbuf, flags, hpte_group, hpte_v, hpte_r);
  55
  56         *slot = retbuf[0];
  57
  58         return rc;
  59 }
  60
  61 static inline long plpar_pte_remove(unsigned long flags, unsigned long ptex,
  62                 unsigned long avpn, unsigned long *old_pteh_ret,
  63                 unsigned long *old_ptel_ret)
  64 {
  65         long rc;
  66         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
  67
  68         rc = plpar_hcall(H_REMOVE, retbuf, flags, ptex, avpn);
  69
  70         *old_pteh_ret = retbuf[0];
  71         *old_ptel_ret = retbuf[1];
  72
  73         return rc;
  74 }
  75
  76 /* plpar_pte_remove_raw can be called in real mode. It calls plpar_hcall_raw */
  77 static inline long plpar_pte_remove_raw(unsigned long flags, unsigned long ptex,
  78                 unsigned long avpn, unsigned long *old_pteh_ret,
  79                 unsigned long *old_ptel_ret)
  80 {
  81         long rc;
  82         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
  83
  84         rc = plpar_hcall_raw(H_REMOVE, retbuf, flags, ptex, avpn);
  85
  86         *old_pteh_ret = retbuf[0];
  87         *old_ptel_ret = retbuf[1];
  88
  89         return rc;
  90 }
  91
  92 static inline long plpar_pte_read(unsigned long flags, unsigned long ptex,
  93                 unsigned long *old_pteh_ret, unsigned long *old_ptel_ret)
  94 {
  95         long rc;
  96         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
  97
  98         rc = plpar_hcall(H_READ, retbuf, flags, ptex);
  99
 100         *old_pteh_ret = retbuf[0];
 101         *old_ptel_ret = retbuf[1];
 102
 103         return rc;
 104 }
 105
 106 /* plpar_pte_read_raw can be called in real mode. It calls plpar_hcall_raw */
 107 static inline long plpar_pte_read_raw(unsigned long flags, unsigned long ptex,
 108                 unsigned long *old_pteh_ret, unsigned long *old_ptel_ret)
 109 {
 110         long rc;
 111         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 112
 113         rc = plpar_hcall_raw(H_READ, retbuf, flags, ptex);
 114
 115         *old_pteh_ret = retbuf[0];
 116         *old_ptel_ret = retbuf[1];
 117
 118         return rc;
 119 }
 120
 121 static inline long plpar_pte_protect(unsigned long flags, unsigned long ptex,
 122                 unsigned long avpn)
 123 {
 124         return plpar_hcall_norets(H_PROTECT, flags, ptex, avpn);
 125 }
 126
 127 static inline long plpar_tce_get(unsigned long liobn, unsigned long ioba,
 128                 unsigned long *tce_ret)
 129 {
 130         long rc;
 131         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 132
 133         rc = plpar_hcall(H_GET_TCE, retbuf, liobn, ioba);
 134
 135         *tce_ret = retbuf[0];
 136
 137         return rc;
 138 }
 139
 140 static inline long plpar_tce_put(unsigned long liobn, unsigned long ioba,
 141                 unsigned long tceval)
 142 {
 143         return plpar_hcall_norets(H_PUT_TCE, liobn, ioba, tceval);
 144 }
 145
 146 static inline long plpar_tce_put_indirect(unsigned long liobn,
 147                 unsigned long ioba, unsigned long page, unsigned long count)
 148 {
 149         return plpar_hcall_norets(H_PUT_TCE_INDIRECT, liobn, ioba, page, count);
 150 }
 151
 152 static inline long plpar_tce_stuff(unsigned long liobn, unsigned long ioba,
 153                 unsigned long tceval, unsigned long count)
 154 {
 155         return plpar_hcall_norets(H_STUFF_TCE, liobn, ioba, tceval, count);
 156 }
 157
 158 static inline long plpar_get_term_char(unsigned long termno,
 159                 unsigned long *len_ret, char *buf_ret)
 160 {
 161         long rc;
 162         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 163         unsigned long *lbuf = (unsigned long *)buf_ret; /* TODO: alignment? */
 164
 165         rc = plpar_hcall(H_GET_TERM_CHAR, retbuf, termno);
 166
 167         *len_ret = retbuf[0];
 168         lbuf[0] = retbuf[1];
 169         lbuf[1] = retbuf[2];
 170
 171         return rc;
 172 }
 173
 174 static inline long plpar_put_term_char(unsigned long termno, unsigned long len,
 175                 const char *buffer)
 176 {
 177         unsigned long *lbuf = (unsigned long *)buffer;  /* TODO: alignment? */
 178         return plpar_hcall_norets(H_PUT_TERM_CHAR, termno, len, lbuf[0],
 179                         lbuf[1]);
 180 }
 181
 182 static inline long plpar_eoi(unsigned long xirr)
 183 {
 184         return plpar_hcall_norets(H_EOI, xirr);
 185 }
 186
 187 static inline long plpar_cppr(unsigned long cppr)
 188 {
 189         return plpar_hcall_norets(H_CPPR, cppr);
 190 }
 191
 192 static inline long plpar_ipi(unsigned long servernum, unsigned long mfrr)
 193 {
 194         return plpar_hcall_norets(H_IPI, servernum, mfrr);
 195 }
 196
 197 static inline long plpar_xirr(unsigned long *xirr_ret)
 198 {
 199         long rc;
 200         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 201
 202         rc = plpar_hcall(H_XIRR, retbuf);
 203
 204         *xirr_ret = retbuf[0];
 205
 206         return rc;
 207 }
 208
 209 #endif /* _PSERIES_PLPAR_WRAPPERS_H */