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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
212bebb4 DD |
2 | #ifndef _ASM_POWERPC_PLPAR_WRAPPERS_H |
3 | #define _ASM_POWERPC_PLPAR_WRAPPERS_H | |
a1218720 | 4 | |
614f15b4 | 5 | #include <linux/string.h> |
fb912568 | 6 | #include <linux/irqflags.h> |
614f15b4 | 7 | |
a1218720 | 8 | #include <asm/hvcall.h> |
614f15b4 | 9 | #include <asm/paca.h> |
370e4587 | 10 | #include <asm/page.h> |
a1218720 | 11 | |
f8b67691 MN |
12 | /* Get state of physical CPU from query_cpu_stopped */ |
13 | int smp_query_cpu_stopped(unsigned int pcpu); | |
14 | #define QCSS_STOPPED 0 | |
15 | #define QCSS_STOPPING 1 | |
16 | #define QCSS_NOT_STOPPED 2 | |
17 | #define QCSS_HARDWARE_ERROR -1 | |
18 | #define QCSS_HARDWARE_BUSY -2 | |
19 | ||
a1218720 ME |
20 | static inline long poll_pending(void) |
21 | { | |
b9377ffc | 22 | return plpar_hcall_norets(H_POLL_PENDING); |
a1218720 ME |
23 | } |
24 | ||
69ddb57c GS |
25 | static inline u8 get_cede_latency_hint(void) |
26 | { | |
cf8a056a | 27 | return get_lppaca()->cede_latency_hint; |
69ddb57c GS |
28 | } |
29 | ||
30 | static inline void set_cede_latency_hint(u8 latency_hint) | |
31 | { | |
cf8a056a | 32 | get_lppaca()->cede_latency_hint = latency_hint; |
69ddb57c GS |
33 | } |
34 | ||
a1218720 ME |
35 | static inline long cede_processor(void) |
36 | { | |
b9377ffc | 37 | return plpar_hcall_norets(H_CEDE); |
a1218720 ME |
38 | } |
39 | ||
69ddb57c GS |
40 | static inline long extended_cede_processor(unsigned long latency_hint) |
41 | { | |
42 | long rc; | |
43 | u8 old_latency_hint = get_cede_latency_hint(); | |
44 | ||
45 | set_cede_latency_hint(latency_hint); | |
fb912568 | 46 | |
69ddb57c | 47 | rc = cede_processor(); |
fb912568 LZ |
48 | #ifdef CONFIG_TRACE_IRQFLAGS |
49 | /* Ensure that H_CEDE returns with IRQs on */ | |
50 | if (WARN_ON(!(mfmsr() & MSR_EE))) | |
51 | __hard_irq_enable(); | |
52 | #endif | |
53 | ||
69ddb57c GS |
54 | set_cede_latency_hint(old_latency_hint); |
55 | ||
56 | return rc; | |
57 | } | |
58 | ||
40765d2b | 59 | static inline long vpa_call(unsigned long flags, unsigned long cpu, |
a1218720 ME |
60 | unsigned long vpa) |
61 | { | |
bb18b3a4 | 62 | flags = flags << H_VPA_FUNC_SHIFT; |
40765d2b ME |
63 | |
64 | return plpar_hcall_norets(H_REGISTER_VPA, flags, cpu, vpa); | |
65 | } | |
66 | ||
598c8231 | 67 | static inline long unregister_vpa(unsigned long cpu) |
40765d2b | 68 | { |
bb18b3a4 | 69 | return vpa_call(H_VPA_DEREG_VPA, cpu, 0); |
40765d2b ME |
70 | } |
71 | ||
72 | static inline long register_vpa(unsigned long cpu, unsigned long vpa) | |
73 | { | |
bb18b3a4 | 74 | return vpa_call(H_VPA_REG_VPA, cpu, vpa); |
a1218720 ME |
75 | } |
76 | ||
598c8231 | 77 | static inline long unregister_slb_shadow(unsigned long cpu) |
2f6093c8 | 78 | { |
bb18b3a4 | 79 | return vpa_call(H_VPA_DEREG_SLB, cpu, 0); |
2f6093c8 MN |
80 | } |
81 | ||
82 | static inline long register_slb_shadow(unsigned long cpu, unsigned long vpa) | |
83 | { | |
bb18b3a4 | 84 | return vpa_call(H_VPA_REG_SLB, cpu, vpa); |
2f6093c8 MN |
85 | } |
86 | ||
b1301797 | 87 | static inline long unregister_dtl(unsigned long cpu) |
fc59a3fc | 88 | { |
bb18b3a4 | 89 | return vpa_call(H_VPA_DEREG_DTL, cpu, 0); |
fc59a3fc JK |
90 | } |
91 | ||
92 | static inline long register_dtl(unsigned long cpu, unsigned long vpa) | |
93 | { | |
bb18b3a4 | 94 | return vpa_call(H_VPA_REG_DTL, cpu, vpa); |
fc59a3fc JK |
95 | } |
96 | ||
40765d2b | 97 | extern void vpa_init(int cpu); |
a1218720 | 98 | |
b9377ffc AB |
99 | static inline long plpar_pte_enter(unsigned long flags, |
100 | unsigned long hpte_group, unsigned long hpte_v, | |
101 | unsigned long hpte_r, unsigned long *slot) | |
102 | { | |
103 | long rc; | |
104 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; | |
105 | ||
106 | rc = plpar_hcall(H_ENTER, retbuf, flags, hpte_group, hpte_v, hpte_r); | |
107 | ||
108 | *slot = retbuf[0]; | |
109 | ||
110 | return rc; | |
111 | } | |
112 | ||
a1218720 ME |
113 | static inline long plpar_pte_remove(unsigned long flags, unsigned long ptex, |
114 | unsigned long avpn, unsigned long *old_pteh_ret, | |
115 | unsigned long *old_ptel_ret) | |
116 | { | |
b9377ffc AB |
117 | long rc; |
118 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; | |
119 | ||
120 | rc = plpar_hcall(H_REMOVE, retbuf, flags, ptex, avpn); | |
121 | ||
122 | *old_pteh_ret = retbuf[0]; | |
123 | *old_ptel_ret = retbuf[1]; | |
124 | ||
125 | return rc; | |
a1218720 ME |
126 | } |
127 | ||
b4aea36b MK |
128 | /* plpar_pte_remove_raw can be called in real mode. It calls plpar_hcall_raw */ |
129 | static inline long plpar_pte_remove_raw(unsigned long flags, unsigned long ptex, | |
130 | unsigned long avpn, unsigned long *old_pteh_ret, | |
131 | unsigned long *old_ptel_ret) | |
132 | { | |
133 | long rc; | |
134 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; | |
135 | ||
136 | rc = plpar_hcall_raw(H_REMOVE, retbuf, flags, ptex, avpn); | |
137 | ||
138 | *old_pteh_ret = retbuf[0]; | |
139 | *old_ptel_ret = retbuf[1]; | |
140 | ||
141 | return rc; | |
142 | } | |
143 | ||
a1218720 ME |
144 | static inline long plpar_pte_read(unsigned long flags, unsigned long ptex, |
145 | unsigned long *old_pteh_ret, unsigned long *old_ptel_ret) | |
146 | { | |
b9377ffc AB |
147 | long rc; |
148 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; | |
149 | ||
150 | rc = plpar_hcall(H_READ, retbuf, flags, ptex); | |
151 | ||
152 | *old_pteh_ret = retbuf[0]; | |
153 | *old_ptel_ret = retbuf[1]; | |
154 | ||
155 | return rc; | |
a1218720 ME |
156 | } |
157 | ||
b7abc5c5 SS |
158 | /* plpar_pte_read_raw can be called in real mode. It calls plpar_hcall_raw */ |
159 | static inline long plpar_pte_read_raw(unsigned long flags, unsigned long ptex, | |
160 | unsigned long *old_pteh_ret, unsigned long *old_ptel_ret) | |
161 | { | |
162 | long rc; | |
163 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; | |
164 | ||
165 | rc = plpar_hcall_raw(H_READ, retbuf, flags, ptex); | |
166 | ||
167 | *old_pteh_ret = retbuf[0]; | |
168 | *old_ptel_ret = retbuf[1]; | |
169 | ||
170 | return rc; | |
171 | } | |
172 | ||
4ad90c86 AK |
173 | /* |
174 | * ptes must be 8*sizeof(unsigned long) | |
175 | */ | |
176 | static inline long plpar_pte_read_4(unsigned long flags, unsigned long ptex, | |
177 | unsigned long *ptes) | |
178 | ||
179 | { | |
180 | long rc; | |
181 | unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; | |
182 | ||
183 | rc = plpar_hcall9(H_READ, retbuf, flags | H_READ_4, ptex); | |
184 | ||
185 | memcpy(ptes, retbuf, 8*sizeof(unsigned long)); | |
186 | ||
187 | return rc; | |
188 | } | |
189 | ||
f90ece28 MN |
190 | /* |
191 | * plpar_pte_read_4_raw can be called in real mode. | |
192 | * ptes must be 8*sizeof(unsigned long) | |
193 | */ | |
194 | static inline long plpar_pte_read_4_raw(unsigned long flags, unsigned long ptex, | |
195 | unsigned long *ptes) | |
196 | ||
197 | { | |
198 | long rc; | |
199 | unsigned long retbuf[PLPAR_HCALL9_BUFSIZE]; | |
200 | ||
201 | rc = plpar_hcall9_raw(H_READ, retbuf, flags | H_READ_4, ptex); | |
202 | ||
203 | memcpy(ptes, retbuf, 8*sizeof(unsigned long)); | |
204 | ||
205 | return rc; | |
206 | } | |
207 | ||
a1218720 ME |
208 | static inline long plpar_pte_protect(unsigned long flags, unsigned long ptex, |
209 | unsigned long avpn) | |
210 | { | |
211 | return plpar_hcall_norets(H_PROTECT, flags, ptex, avpn); | |
212 | } | |
213 | ||
64b40ffb DG |
214 | static inline long plpar_resize_hpt_prepare(unsigned long flags, |
215 | unsigned long shift) | |
216 | { | |
217 | return plpar_hcall_norets(H_RESIZE_HPT_PREPARE, flags, shift); | |
218 | } | |
219 | ||
220 | static inline long plpar_resize_hpt_commit(unsigned long flags, | |
221 | unsigned long shift) | |
222 | { | |
223 | return plpar_hcall_norets(H_RESIZE_HPT_COMMIT, flags, shift); | |
224 | } | |
225 | ||
a1218720 ME |
226 | static inline long plpar_tce_get(unsigned long liobn, unsigned long ioba, |
227 | unsigned long *tce_ret) | |
228 | { | |
b9377ffc AB |
229 | long rc; |
230 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; | |
231 | ||
232 | rc = plpar_hcall(H_GET_TCE, retbuf, liobn, ioba); | |
233 | ||
234 | *tce_ret = retbuf[0]; | |
235 | ||
236 | return rc; | |
a1218720 ME |
237 | } |
238 | ||
239 | static inline long plpar_tce_put(unsigned long liobn, unsigned long ioba, | |
240 | unsigned long tceval) | |
241 | { | |
242 | return plpar_hcall_norets(H_PUT_TCE, liobn, ioba, tceval); | |
243 | } | |
244 | ||
245 | static inline long plpar_tce_put_indirect(unsigned long liobn, | |
246 | unsigned long ioba, unsigned long page, unsigned long count) | |
247 | { | |
248 | return plpar_hcall_norets(H_PUT_TCE_INDIRECT, liobn, ioba, page, count); | |
249 | } | |
250 | ||
251 | static inline long plpar_tce_stuff(unsigned long liobn, unsigned long ioba, | |
252 | unsigned long tceval, unsigned long count) | |
253 | { | |
254 | return plpar_hcall_norets(H_STUFF_TCE, liobn, ioba, tceval, count); | |
255 | } | |
256 | ||
d8f48ecc IM |
257 | /* Set various resource mode parameters */ |
258 | static inline long plpar_set_mode(unsigned long mflags, unsigned long resource, | |
259 | unsigned long value1, unsigned long value2) | |
260 | { | |
261 | return plpar_hcall_norets(H_SET_MODE, mflags, resource, value1, value2); | |
262 | } | |
798042da IM |
263 | |
264 | /* | |
265 | * Enable relocation on exceptions on this partition | |
266 | * | |
267 | * Note: this call has a partition wide scope and can take a while to complete. | |
268 | * If it returns H_LONG_BUSY_* it should be retried periodically until it | |
269 | * returns H_SUCCESS. | |
270 | */ | |
271 | static inline long enable_reloc_on_exceptions(void) | |
272 | { | |
273 | /* mflags = 3: Exceptions at 0xC000000000004000 */ | |
60666de2 | 274 | return plpar_set_mode(3, H_SET_MODE_RESOURCE_ADDR_TRANS_MODE, 0, 0); |
798042da IM |
275 | } |
276 | ||
277 | /* | |
278 | * Disable relocation on exceptions on this partition | |
279 | * | |
280 | * Note: this call has a partition wide scope and can take a while to complete. | |
281 | * If it returns H_LONG_BUSY_* it should be retried periodically until it | |
282 | * returns H_SUCCESS. | |
283 | */ | |
284 | static inline long disable_reloc_on_exceptions(void) { | |
60666de2 | 285 | return plpar_set_mode(0, H_SET_MODE_RESOURCE_ADDR_TRANS_MODE, 0, 0); |
798042da IM |
286 | } |
287 | ||
e844b1ee AB |
288 | /* |
289 | * Take exceptions in big endian mode on this partition | |
290 | * | |
291 | * Note: this call has a partition wide scope and can take a while to complete. | |
292 | * If it returns H_LONG_BUSY_* it should be retried periodically until it | |
293 | * returns H_SUCCESS. | |
294 | */ | |
295 | static inline long enable_big_endian_exceptions(void) | |
296 | { | |
297 | /* mflags = 0: big endian exceptions */ | |
60666de2 | 298 | return plpar_set_mode(0, H_SET_MODE_RESOURCE_LE, 0, 0); |
e844b1ee AB |
299 | } |
300 | ||
301 | /* | |
302 | * Take exceptions in little endian mode on this partition | |
303 | * | |
304 | * Note: this call has a partition wide scope and can take a while to complete. | |
305 | * If it returns H_LONG_BUSY_* it should be retried periodically until it | |
306 | * returns H_SUCCESS. | |
307 | */ | |
308 | static inline long enable_little_endian_exceptions(void) | |
309 | { | |
310 | /* mflags = 1: little endian exceptions */ | |
60666de2 | 311 | return plpar_set_mode(1, H_SET_MODE_RESOURCE_LE, 0, 0); |
e844b1ee AB |
312 | } |
313 | ||
376a8646 IM |
314 | static inline long plapr_set_ciabr(unsigned long ciabr) |
315 | { | |
60666de2 | 316 | return plpar_set_mode(0, H_SET_MODE_RESOURCE_SET_CIABR, ciabr, 0); |
376a8646 IM |
317 | } |
318 | ||
319 | static inline long plapr_set_watchpoint0(unsigned long dawr0, unsigned long dawrx0) | |
320 | { | |
60666de2 | 321 | return plpar_set_mode(0, H_SET_MODE_RESOURCE_SET_DAWR, dawr0, dawrx0); |
376a8646 IM |
322 | } |
323 | ||
53ce2996 NP |
324 | static inline long plapr_signal_sys_reset(long cpu) |
325 | { | |
326 | return plpar_hcall_norets(H_SIGNAL_SYS_RESET, cpu); | |
327 | } | |
328 | ||
191eccb1 MN |
329 | static inline long plpar_get_cpu_characteristics(struct h_cpu_char_result *p) |
330 | { | |
331 | unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; | |
332 | long rc; | |
333 | ||
334 | rc = plpar_hcall(H_GET_CPU_CHARACTERISTICS, retbuf); | |
335 | if (rc == H_SUCCESS) { | |
336 | p->character = retbuf[0]; | |
337 | p->behaviour = retbuf[1]; | |
338 | } | |
339 | ||
340 | return rc; | |
341 | } | |
342 | ||
212bebb4 | 343 | #endif /* _ASM_POWERPC_PLPAR_WRAPPERS_H */ |