1 #ifndef _PSERIES_PLPAR_WRAPPERS_H
2 #define _PSERIES_PLPAR_WRAPPERS_H
4 #include <linux/string.h>
12 #define QCSS_STOPPED 0
13 #define QCSS_STOPPING 1
14 #define QCSS_NOT_STOPPED 2
15 #define QCSS_HARDWARE_ERROR -1
16 #define QCSS_HARDWARE_BUSY -2
18 static inline long poll_pending(
void)
20 return plpar_hcall_norets(H_POLL_PENDING);
23 static inline u8 get_cede_latency_hint(
void)
25 return get_lppaca()->cede_latency_hint;
28 static inline void set_cede_latency_hint(
u8 latency_hint)
30 get_lppaca()->cede_latency_hint = latency_hint;
33 static inline long cede_processor(
void)
35 return plpar_hcall_norets(H_CEDE);
38 static inline long extended_cede_processor(
unsigned long latency_hint)
41 u8 old_latency_hint = get_cede_latency_hint();
43 set_cede_latency_hint(latency_hint);
44 rc = cede_processor();
45 set_cede_latency_hint(old_latency_hint);
50 static inline long vpa_call(
unsigned long flags,
unsigned long cpu,
54 flags = flags << (63 - 18);
56 return plpar_hcall_norets(H_REGISTER_VPA, flags, cpu, vpa);
59 static inline long unregister_vpa(
unsigned long cpu)
61 return vpa_call(0x5, cpu, 0);
64 static inline long register_vpa(
unsigned long cpu,
unsigned long vpa)
66 return vpa_call(0x1, cpu, vpa);
69 static inline long unregister_slb_shadow(
unsigned long cpu)
71 return vpa_call(0x7, cpu, 0);
74 static inline long register_slb_shadow(
unsigned long cpu,
unsigned long vpa)
76 return vpa_call(0x3, cpu, vpa);
79 static inline long unregister_dtl(
unsigned long cpu)
81 return vpa_call(0x6, cpu, 0);
84 static inline long register_dtl(
unsigned long cpu,
unsigned long vpa)
86 return vpa_call(0x2, cpu, vpa);
89 static inline long plpar_page_set_loaned(
unsigned long vpa)
91 unsigned long cmo_page_sz = cmo_get_page_size();
95 for (i = 0; !rc && i <
PAGE_SIZE; i += cmo_page_sz)
96 rc = plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED, vpa + i, 0);
98 for (i -= cmo_page_sz; rc && i != 0; i -= cmo_page_sz)
99 plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE,
100 vpa + i - cmo_page_sz, 0);
105 static inline long plpar_page_set_active(
unsigned long vpa)
107 unsigned long cmo_page_sz = cmo_get_page_size();
111 for (i = 0; !rc && i <
PAGE_SIZE; i += cmo_page_sz)
112 rc = plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE, vpa + i, 0);
114 for (i -= cmo_page_sz; rc && i != 0; i -= cmo_page_sz)
115 plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED,
116 vpa + i - cmo_page_sz, 0);
123 static inline long plpar_pte_enter(
unsigned long flags,
124 unsigned long hpte_group,
unsigned long hpte_v,
125 unsigned long hpte_r,
unsigned long *
slot)
128 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
130 rc = plpar_hcall(H_ENTER, retbuf, flags, hpte_group, hpte_v, hpte_r);
137 static inline long plpar_pte_remove(
unsigned long flags,
unsigned long ptex,
138 unsigned long avpn,
unsigned long *old_pteh_ret,
139 unsigned long *old_ptel_ret)
142 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
144 rc = plpar_hcall(H_REMOVE, retbuf, flags, ptex, avpn);
146 *old_pteh_ret = retbuf[0];
147 *old_ptel_ret = retbuf[1];
153 static inline long plpar_pte_remove_raw(
unsigned long flags,
unsigned long ptex,
154 unsigned long avpn,
unsigned long *old_pteh_ret,
155 unsigned long *old_ptel_ret)
158 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
160 rc = plpar_hcall_raw(H_REMOVE, retbuf, flags, ptex, avpn);
162 *old_pteh_ret = retbuf[0];
163 *old_ptel_ret = retbuf[1];
168 static inline long plpar_pte_read(
unsigned long flags,
unsigned long ptex,
169 unsigned long *old_pteh_ret,
unsigned long *old_ptel_ret)
172 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
174 rc = plpar_hcall(H_READ, retbuf, flags, ptex);
176 *old_pteh_ret = retbuf[0];
177 *old_ptel_ret = retbuf[1];
183 static inline long plpar_pte_read_raw(
unsigned long flags,
unsigned long ptex,
184 unsigned long *old_pteh_ret,
unsigned long *old_ptel_ret)
187 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
189 rc = plpar_hcall_raw(H_READ, retbuf, flags, ptex);
191 *old_pteh_ret = retbuf[0];
192 *old_ptel_ret = retbuf[1];
201 static inline long plpar_pte_read_4_raw(
unsigned long flags,
unsigned long ptex,
206 unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
208 rc = plpar_hcall9_raw(H_READ, retbuf, flags | H_READ_4, ptex);
210 memcpy(ptes, retbuf, 8*
sizeof(
unsigned long));
215 static inline long plpar_pte_protect(
unsigned long flags,
unsigned long ptex,
218 return plpar_hcall_norets(H_PROTECT, flags, ptex, avpn);
221 static inline long plpar_tce_get(
unsigned long liobn,
unsigned long ioba,
222 unsigned long *tce_ret)
225 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
227 rc = plpar_hcall(H_GET_TCE, retbuf, liobn, ioba);
229 *tce_ret = retbuf[0];
234 static inline long plpar_tce_put(
unsigned long liobn,
unsigned long ioba,
235 unsigned long tceval)
237 return plpar_hcall_norets(H_PUT_TCE, liobn, ioba, tceval);
240 static inline long plpar_tce_put_indirect(
unsigned long liobn,
243 return plpar_hcall_norets(H_PUT_TCE_INDIRECT, liobn, ioba, page, count);
246 static inline long plpar_tce_stuff(
unsigned long liobn,
unsigned long ioba,
247 unsigned long tceval,
unsigned long count)
249 return plpar_hcall_norets(H_STUFF_TCE, liobn, ioba, tceval, count);
252 static inline long plpar_get_term_char(
unsigned long termno,
253 unsigned long *len_ret,
char *buf_ret)
256 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
257 unsigned long *
lbuf = (
unsigned long *)buf_ret;
259 rc = plpar_hcall(H_GET_TERM_CHAR, retbuf, termno);
261 *len_ret = retbuf[0];
268 static inline long plpar_put_term_char(
unsigned long termno,
unsigned long len,
271 unsigned long *
lbuf = (
unsigned long *)buffer;
272 return plpar_hcall_norets(H_PUT_TERM_CHAR, termno, len, lbuf[0],