1 #ifndef _PSERIES_PLPAR_WRAPPERS_H
2 #define _PSERIES_PLPAR_WRAPPERS_H
4 #include <asm/hvcall.h>
7 static inline long poll_pending(void)
9 return plpar_hcall_norets(H_POLL_PENDING);
12 static inline u8 get_cede_latency_hint(void)
14 return get_lppaca()->gpr5_dword.fields.cede_latency_hint;
17 static inline void set_cede_latency_hint(u8 latency_hint)
19 get_lppaca()->gpr5_dword.fields.cede_latency_hint = latency_hint;
22 static inline long cede_processor(void)
24 return plpar_hcall_norets(H_CEDE);
27 static inline long extended_cede_processor(unsigned long latency_hint)
30 u8 old_latency_hint = get_cede_latency_hint();
32 set_cede_latency_hint(latency_hint);
33 rc = cede_processor();
34 set_cede_latency_hint(old_latency_hint);
39 static inline long vpa_call(unsigned long flags, unsigned long cpu,
42 /* flags are in bits 16-18 (counting from most significant bit) */
43 flags = flags << (63 - 18);
45 return plpar_hcall_norets(H_REGISTER_VPA, flags, cpu, vpa);
48 static inline long unregister_vpa(unsigned long cpu, unsigned long vpa)
50 return vpa_call(0x5, cpu, vpa);
53 static inline long register_vpa(unsigned long cpu, unsigned long vpa)
55 return vpa_call(0x1, cpu, vpa);
58 static inline long unregister_slb_shadow(unsigned long cpu, unsigned long vpa)
60 return vpa_call(0x7, cpu, vpa);
63 static inline long register_slb_shadow(unsigned long cpu, unsigned long vpa)
65 return vpa_call(0x3, cpu, vpa);
68 static inline long unregister_dtl(unsigned long cpu, unsigned long vpa)
70 return vpa_call(0x6, cpu, vpa);
73 static inline long register_dtl(unsigned long cpu, unsigned long vpa)
75 return vpa_call(0x2, cpu, vpa);
78 static inline long plpar_page_set_loaned(unsigned long vpa)
80 unsigned long cmo_page_sz = cmo_get_page_size();
84 for (i = 0; !rc && i < PAGE_SIZE; i += cmo_page_sz)
85 rc = plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED, vpa + i, 0);
87 for (i -= cmo_page_sz; rc && i != 0; i -= cmo_page_sz)
88 plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE,
89 vpa + i - cmo_page_sz, 0);
94 static inline long plpar_page_set_active(unsigned long vpa)
96 unsigned long cmo_page_sz = cmo_get_page_size();
100 for (i = 0; !rc && i < PAGE_SIZE; i += cmo_page_sz)
101 rc = plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE, vpa + i, 0);
103 for (i -= cmo_page_sz; rc && i != 0; i -= cmo_page_sz)
104 plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED,
105 vpa + i - cmo_page_sz, 0);
110 extern void vpa_init(int cpu);
112 static inline long plpar_pte_enter(unsigned long flags,
113 unsigned long hpte_group, unsigned long hpte_v,
114 unsigned long hpte_r, unsigned long *slot)
117 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
119 rc = plpar_hcall(H_ENTER, retbuf, flags, hpte_group, hpte_v, hpte_r);
126 static inline long plpar_pte_remove(unsigned long flags, unsigned long ptex,
127 unsigned long avpn, unsigned long *old_pteh_ret,
128 unsigned long *old_ptel_ret)
131 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
133 rc = plpar_hcall(H_REMOVE, retbuf, flags, ptex, avpn);
135 *old_pteh_ret = retbuf[0];
136 *old_ptel_ret = retbuf[1];
141 /* plpar_pte_remove_raw can be called in real mode. It calls plpar_hcall_raw */
142 static inline long plpar_pte_remove_raw(unsigned long flags, unsigned long ptex,
143 unsigned long avpn, unsigned long *old_pteh_ret,
144 unsigned long *old_ptel_ret)
147 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
149 rc = plpar_hcall_raw(H_REMOVE, retbuf, flags, ptex, avpn);
151 *old_pteh_ret = retbuf[0];
152 *old_ptel_ret = retbuf[1];
157 static inline long plpar_pte_read(unsigned long flags, unsigned long ptex,
158 unsigned long *old_pteh_ret, unsigned long *old_ptel_ret)
161 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
163 rc = plpar_hcall(H_READ, retbuf, flags, ptex);
165 *old_pteh_ret = retbuf[0];
166 *old_ptel_ret = retbuf[1];
171 /* plpar_pte_read_raw can be called in real mode. It calls plpar_hcall_raw */
172 static inline long plpar_pte_read_raw(unsigned long flags, unsigned long ptex,
173 unsigned long *old_pteh_ret, unsigned long *old_ptel_ret)
176 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
178 rc = plpar_hcall_raw(H_READ, retbuf, flags, ptex);
180 *old_pteh_ret = retbuf[0];
181 *old_ptel_ret = retbuf[1];
186 static inline long plpar_pte_protect(unsigned long flags, unsigned long ptex,
189 return plpar_hcall_norets(H_PROTECT, flags, ptex, avpn);
192 static inline long plpar_tce_get(unsigned long liobn, unsigned long ioba,
193 unsigned long *tce_ret)
196 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
198 rc = plpar_hcall(H_GET_TCE, retbuf, liobn, ioba);
200 *tce_ret = retbuf[0];
205 static inline long plpar_tce_put(unsigned long liobn, unsigned long ioba,
206 unsigned long tceval)
208 return plpar_hcall_norets(H_PUT_TCE, liobn, ioba, tceval);
211 static inline long plpar_tce_put_indirect(unsigned long liobn,
212 unsigned long ioba, unsigned long page, unsigned long count)
214 return plpar_hcall_norets(H_PUT_TCE_INDIRECT, liobn, ioba, page, count);
217 static inline long plpar_tce_stuff(unsigned long liobn, unsigned long ioba,
218 unsigned long tceval, unsigned long count)
220 return plpar_hcall_norets(H_STUFF_TCE, liobn, ioba, tceval, count);
223 static inline long plpar_get_term_char(unsigned long termno,
224 unsigned long *len_ret, char *buf_ret)
227 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
228 unsigned long *lbuf = (unsigned long *)buf_ret; /* TODO: alignment? */
230 rc = plpar_hcall(H_GET_TERM_CHAR, retbuf, termno);
232 *len_ret = retbuf[0];
239 static inline long plpar_put_term_char(unsigned long termno, unsigned long len,
242 unsigned long *lbuf = (unsigned long *)buffer; /* TODO: alignment? */
243 return plpar_hcall_norets(H_PUT_TERM_CHAR, termno, len, lbuf[0],
247 static inline long plpar_eoi(unsigned long xirr)
249 return plpar_hcall_norets(H_EOI, xirr);
252 static inline long plpar_cppr(unsigned long cppr)
254 return plpar_hcall_norets(H_CPPR, cppr);
257 static inline long plpar_ipi(unsigned long servernum, unsigned long mfrr)
259 return plpar_hcall_norets(H_IPI, servernum, mfrr);
262 static inline long plpar_xirr(unsigned long *xirr_ret)
265 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
267 rc = plpar_hcall(H_XIRR, retbuf);
269 *xirr_ret = retbuf[0];
274 #endif /* _PSERIES_PLPAR_WRAPPERS_H */