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 static inline long plpar_page_set_loaned(unsigned long vpa)
  46 {
  47         return plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED, vpa, 0);
  48 }
  49
  50 static inline long plpar_page_set_active(unsigned long vpa)
  51 {
  52         return plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE, vpa, 0);
  53 }
  54
  55 extern void vpa_init(int cpu);
  56
  57 static inline long plpar_pte_enter(unsigned long flags,
  58                 unsigned long hpte_group, unsigned long hpte_v,
  59                 unsigned long hpte_r, unsigned long *slot)
  60 {
  61         long rc;
  62         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
  63
  64         rc = plpar_hcall(H_ENTER, retbuf, flags, hpte_group, hpte_v, hpte_r);
  65
  66         *slot = retbuf[0];
  67
  68         return rc;
  69 }
  70
  71 static inline long plpar_pte_remove(unsigned long flags, unsigned long ptex,
  72                 unsigned long avpn, unsigned long *old_pteh_ret,
  73                 unsigned long *old_ptel_ret)
  74 {
  75         long rc;
  76         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
  77
  78         rc = plpar_hcall(H_REMOVE, retbuf, flags, ptex, avpn);
  79
  80         *old_pteh_ret = retbuf[0];
  81         *old_ptel_ret = retbuf[1];
  82
  83         return rc;
  84 }
  85
  86 /* plpar_pte_remove_raw can be called in real mode. It calls plpar_hcall_raw */
  87 static inline long plpar_pte_remove_raw(unsigned long flags, unsigned long ptex,
  88                 unsigned long avpn, unsigned long *old_pteh_ret,
  89                 unsigned long *old_ptel_ret)
  90 {
  91         long rc;
  92         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
  93
  94         rc = plpar_hcall_raw(H_REMOVE, retbuf, flags, ptex, avpn);
  95
  96         *old_pteh_ret = retbuf[0];
  97         *old_ptel_ret = retbuf[1];
  98
  99         return rc;
 100 }
 101
 102 static inline long plpar_pte_read(unsigned long flags, unsigned long ptex,
 103                 unsigned long *old_pteh_ret, unsigned long *old_ptel_ret)
 104 {
 105         long rc;
 106         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 107
 108         rc = plpar_hcall(H_READ, retbuf, flags, ptex);
 109
 110         *old_pteh_ret = retbuf[0];
 111         *old_ptel_ret = retbuf[1];
 112
 113         return rc;
 114 }
 115
 116 /* plpar_pte_read_raw can be called in real mode. It calls plpar_hcall_raw */
 117 static inline long plpar_pte_read_raw(unsigned long flags, unsigned long ptex,
 118                 unsigned long *old_pteh_ret, unsigned long *old_ptel_ret)
 119 {
 120         long rc;
 121         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 122
 123         rc = plpar_hcall_raw(H_READ, retbuf, flags, ptex);
 124
 125         *old_pteh_ret = retbuf[0];
 126         *old_ptel_ret = retbuf[1];
 127
 128         return rc;
 129 }
 130
 131 static inline long plpar_pte_protect(unsigned long flags, unsigned long ptex,
 132                 unsigned long avpn)
 133 {
 134         return plpar_hcall_norets(H_PROTECT, flags, ptex, avpn);
 135 }
 136
 137 static inline long plpar_tce_get(unsigned long liobn, unsigned long ioba,
 138                 unsigned long *tce_ret)
 139 {
 140         long rc;
 141         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 142
 143         rc = plpar_hcall(H_GET_TCE, retbuf, liobn, ioba);
 144
 145         *tce_ret = retbuf[0];
 146
 147         return rc;
 148 }
 149
 150 static inline long plpar_tce_put(unsigned long liobn, unsigned long ioba,
 151                 unsigned long tceval)
 152 {
 153         return plpar_hcall_norets(H_PUT_TCE, liobn, ioba, tceval);
 154 }
 155
 156 static inline long plpar_tce_put_indirect(unsigned long liobn,
 157                 unsigned long ioba, unsigned long page, unsigned long count)
 158 {
 159         return plpar_hcall_norets(H_PUT_TCE_INDIRECT, liobn, ioba, page, count);
 160 }
 161
 162 static inline long plpar_tce_stuff(unsigned long liobn, unsigned long ioba,
 163                 unsigned long tceval, unsigned long count)
 164 {
 165         return plpar_hcall_norets(H_STUFF_TCE, liobn, ioba, tceval, count);
 166 }
 167
 168 static inline long plpar_get_term_char(unsigned long termno,
 169                 unsigned long *len_ret, char *buf_ret)
 170 {
 171         long rc;
 172         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 173         unsigned long *lbuf = (unsigned long *)buf_ret; /* TODO: alignment? */
 174
 175         rc = plpar_hcall(H_GET_TERM_CHAR, retbuf, termno);
 176
 177         *len_ret = retbuf[0];
 178         lbuf[0] = retbuf[1];
 179         lbuf[1] = retbuf[2];
 180
 181         return rc;
 182 }
 183
 184 static inline long plpar_put_term_char(unsigned long termno, unsigned long len,
 185                 const char *buffer)
 186 {
 187         unsigned long *lbuf = (unsigned long *)buffer;  /* TODO: alignment? */
 188         return plpar_hcall_norets(H_PUT_TERM_CHAR, termno, len, lbuf[0],
 189                         lbuf[1]);
 190 }
 191
 192 static inline long plpar_eoi(unsigned long xirr)
 193 {
 194         return plpar_hcall_norets(H_EOI, xirr);
 195 }
 196
 197 static inline long plpar_cppr(unsigned long cppr)
 198 {
 199         return plpar_hcall_norets(H_CPPR, cppr);
 200 }
 201
 202 static inline long plpar_ipi(unsigned long servernum, unsigned long mfrr)
 203 {
 204         return plpar_hcall_norets(H_IPI, servernum, mfrr);
 205 }
 206
 207 static inline long plpar_xirr(unsigned long *xirr_ret)
 208 {
 209         long rc;
 210         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 211
 212         rc = plpar_hcall(H_XIRR, retbuf);
 213
 214         *xirr_ret = retbuf[0];
 215
 216         return rc;
 217 }
 218
 219 #endif /* _PSERIES_PLPAR_WRAPPERS_H */