1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
|
#ifndef _ASM_POWERPC_PLPAR_WRAPPERS_H
#define _ASM_POWERPC_PLPAR_WRAPPERS_H
#include <linux/string.h>
#include <linux/irqflags.h>
#include <asm/hvcall.h>
#include <asm/paca.h>
#include <asm/page.h>
/* Get state of physical CPU from query_cpu_stopped */
int smp_query_cpu_stopped(unsigned int pcpu);
#define QCSS_STOPPED 0
#define QCSS_STOPPING 1
#define QCSS_NOT_STOPPED 2
#define QCSS_HARDWARE_ERROR -1
#define QCSS_HARDWARE_BUSY -2
static inline long poll_pending(void)
{
return plpar_hcall_norets(H_POLL_PENDING);
}
static inline u8 get_cede_latency_hint(void)
{
return get_lppaca()->cede_latency_hint;
}
static inline void set_cede_latency_hint(u8 latency_hint)
{
get_lppaca()->cede_latency_hint = latency_hint;
}
static inline long cede_processor(void)
{
return plpar_hcall_norets(H_CEDE);
}
static inline long extended_cede_processor(unsigned long latency_hint)
{
long rc;
u8 old_latency_hint = get_cede_latency_hint();
set_cede_latency_hint(latency_hint);
rc = cede_processor();
#ifdef CONFIG_TRACE_IRQFLAGS
/* Ensure that H_CEDE returns with IRQs on */
if (WARN_ON(!(mfmsr() & MSR_EE)))
__hard_irq_enable();
#endif
set_cede_latency_hint(old_latency_hint);
return rc;
}
static inline long vpa_call(unsigned long flags, unsigned long cpu,
unsigned long vpa)
{
flags = flags << H_VPA_FUNC_SHIFT;
return plpar_hcall_norets(H_REGISTER_VPA, flags, cpu, vpa);
}
static inline long unregister_vpa(unsigned long cpu)
{
return vpa_call(H_VPA_DEREG_VPA, cpu, 0);
}
static inline long register_vpa(unsigned long cpu, unsigned long vpa)
{
return vpa_call(H_VPA_REG_VPA, cpu, vpa);
}
static inline long unregister_slb_shadow(unsigned long cpu)
{
return vpa_call(H_VPA_DEREG_SLB, cpu, 0);
}
static inline long register_slb_shadow(unsigned long cpu, unsigned long vpa)
{
return vpa_call(H_VPA_REG_SLB, cpu, vpa);
}
static inline long unregister_dtl(unsigned long cpu)
{
return vpa_call(H_VPA_DEREG_DTL, cpu, 0);
}
static inline long register_dtl(unsigned long cpu, unsigned long vpa)
{
return vpa_call(H_VPA_REG_DTL, cpu, vpa);
}
static inline long plpar_page_set_loaned(unsigned long vpa)
{
unsigned long cmo_page_sz = cmo_get_page_size();
long rc = 0;
int i;
for (i = 0; !rc && i < PAGE_SIZE; i += cmo_page_sz)
rc = plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED, vpa + i, 0);
for (i -= cmo_page_sz; rc && i != 0; i -= cmo_page_sz)
plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE,
vpa + i - cmo_page_sz, 0);
return rc;
}
static inline long plpar_page_set_active(unsigned long vpa)
{
unsigned long cmo_page_sz = cmo_get_page_size();
long rc = 0;
int i;
for (i = 0; !rc && i < PAGE_SIZE; i += cmo_page_sz)
rc = plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE, vpa + i, 0);
for (i -= cmo_page_sz; rc && i != 0; i -= cmo_page_sz)
plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED,
vpa + i - cmo_page_sz, 0);
return rc;
}
extern void vpa_init(int cpu);
static inline long plpar_pte_enter(unsigned long flags,
unsigned long hpte_group, unsigned long hpte_v,
unsigned long hpte_r, unsigned long *slot)
{
long rc;
unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
rc = plpar_hcall(H_ENTER, retbuf, flags, hpte_group, hpte_v, hpte_r);
*slot = retbuf[0];
return rc;
}
static inline long plpar_pte_remove(unsigned long flags, unsigned long ptex,
unsigned long avpn, unsigned long *old_pteh_ret,
unsigned long *old_ptel_ret)
{
long rc;
unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
rc = plpar_hcall(H_REMOVE, retbuf, flags, ptex, avpn);
*old_pteh_ret = retbuf[0];
*old_ptel_ret = retbuf[1];
return rc;
}
/* plpar_pte_remove_raw can be called in real mode. It calls plpar_hcall_raw */
static inline long plpar_pte_remove_raw(unsigned long flags, unsigned long ptex,
unsigned long avpn, unsigned long *old_pteh_ret,
unsigned long *old_ptel_ret)
{
long rc;
unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
rc = plpar_hcall_raw(H_REMOVE, retbuf, flags, ptex, avpn);
*old_pteh_ret = retbuf[0];
*old_ptel_ret = retbuf[1];
return rc;
}
static inline long plpar_pte_read(unsigned long flags, unsigned long ptex,
unsigned long *old_pteh_ret, unsigned long *old_ptel_ret)
{
long rc;
unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
rc = plpar_hcall(H_READ, retbuf, flags, ptex);
*old_pteh_ret = retbuf[0];
*old_ptel_ret = retbuf[1];
return rc;
}
/* plpar_pte_read_raw can be called in real mode. It calls plpar_hcall_raw */
static inline long plpar_pte_read_raw(unsigned long flags, unsigned long ptex,
unsigned long *old_pteh_ret, unsigned long *old_ptel_ret)
{
long rc;
unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
rc = plpar_hcall_raw(H_READ, retbuf, flags, ptex);
*old_pteh_ret = retbuf[0];
*old_ptel_ret = retbuf[1];
return rc;
}
/*
* plpar_pte_read_4_raw can be called in real mode.
* ptes must be 8*sizeof(unsigned long)
*/
static inline long plpar_pte_read_4_raw(unsigned long flags, unsigned long ptex,
unsigned long *ptes)
{
long rc;
unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
rc = plpar_hcall9_raw(H_READ, retbuf, flags | H_READ_4, ptex);
memcpy(ptes, retbuf, 8*sizeof(unsigned long));
return rc;
}
static inline long plpar_pte_protect(unsigned long flags, unsigned long ptex,
unsigned long avpn)
{
return plpar_hcall_norets(H_PROTECT, flags, ptex, avpn);
}
static inline long plpar_tce_get(unsigned long liobn, unsigned long ioba,
unsigned long *tce_ret)
{
long rc;
unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
rc = plpar_hcall(H_GET_TCE, retbuf, liobn, ioba);
*tce_ret = retbuf[0];
return rc;
}
static inline long plpar_tce_put(unsigned long liobn, unsigned long ioba,
unsigned long tceval)
{
return plpar_hcall_norets(H_PUT_TCE, liobn, ioba, tceval);
}
static inline long plpar_tce_put_indirect(unsigned long liobn,
unsigned long ioba, unsigned long page, unsigned long count)
{
return plpar_hcall_norets(H_PUT_TCE_INDIRECT, liobn, ioba, page, count);
}
static inline long plpar_tce_stuff(unsigned long liobn, unsigned long ioba,
unsigned long tceval, unsigned long count)
{
return plpar_hcall_norets(H_STUFF_TCE, liobn, ioba, tceval, count);
}
/* Set various resource mode parameters */
static inline long plpar_set_mode(unsigned long mflags, unsigned long resource,
unsigned long value1, unsigned long value2)
{
return plpar_hcall_norets(H_SET_MODE, mflags, resource, value1, value2);
}
/*
* Enable relocation on exceptions on this partition
*
* Note: this call has a partition wide scope and can take a while to complete.
* If it returns H_LONG_BUSY_* it should be retried periodically until it
* returns H_SUCCESS.
*/
static inline long enable_reloc_on_exceptions(void)
{
/* mflags = 3: Exceptions at 0xC000000000004000 */
return plpar_set_mode(3, 3, 0, 0);
}
/*
* Disable relocation on exceptions on this partition
*
* Note: this call has a partition wide scope and can take a while to complete.
* If it returns H_LONG_BUSY_* it should be retried periodically until it
* returns H_SUCCESS.
*/
static inline long disable_reloc_on_exceptions(void) {
return plpar_set_mode(0, 3, 0, 0);
}
static inline long plapr_set_ciabr(unsigned long ciabr)
{
return plpar_set_mode(0, 1, ciabr, 0);
}
static inline long plapr_set_watchpoint0(unsigned long dawr0, unsigned long dawrx0)
{
return plpar_set_mode(0, 2, dawr0, dawrx0);
}
#endif /* _ASM_POWERPC_PLPAR_WRAPPERS_H */
|
