xref: /openbmc/linux/arch/powerpc/include/asm/hvcall.h (revision 20e2fc42)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_POWERPC_HVCALL_H
3 #define _ASM_POWERPC_HVCALL_H
4 #ifdef __KERNEL__
5 
6 #define HVSC			.long 0x44000022
7 
8 #define H_SUCCESS	0
9 #define H_BUSY		1	/* Hardware busy -- retry later */
10 #define H_CLOSED	2	/* Resource closed */
11 #define H_NOT_AVAILABLE 3
12 #define H_CONSTRAINED	4	/* Resource request constrained to max allowed */
13 #define H_PARTIAL       5
14 #define H_IN_PROGRESS	14	/* Kind of like busy */
15 #define H_PAGE_REGISTERED 15
16 #define H_PARTIAL_STORE   16
17 #define H_PENDING	17	/* returned from H_POLL_PENDING */
18 #define H_CONTINUE	18	/* Returned from H_Join on success */
19 #define H_LONG_BUSY_START_RANGE		9900  /* Start of long busy range */
20 #define H_LONG_BUSY_ORDER_1_MSEC	9900  /* Long busy, hint that 1msec \
21 						 is a good time to retry */
22 #define H_LONG_BUSY_ORDER_10_MSEC	9901  /* Long busy, hint that 10msec \
23 						 is a good time to retry */
24 #define H_LONG_BUSY_ORDER_100_MSEC 	9902  /* Long busy, hint that 100msec \
25 						 is a good time to retry */
26 #define H_LONG_BUSY_ORDER_1_SEC		9903  /* Long busy, hint that 1sec \
27 						 is a good time to retry */
28 #define H_LONG_BUSY_ORDER_10_SEC	9904  /* Long busy, hint that 10sec \
29 						 is a good time to retry */
30 #define H_LONG_BUSY_ORDER_100_SEC	9905  /* Long busy, hint that 100sec \
31 						 is a good time to retry */
32 #define H_LONG_BUSY_END_RANGE		9905  /* End of long busy range */
33 
34 /* Internal value used in book3s_hv kvm support; not returned to guests */
35 #define H_TOO_HARD	9999
36 
37 #define H_HARDWARE	-1	/* Hardware error */
38 #define H_FUNCTION	-2	/* Function not supported */
39 #define H_PRIVILEGE	-3	/* Caller not privileged */
40 #define H_PARAMETER	-4	/* Parameter invalid, out-of-range or conflicting */
41 #define H_BAD_MODE	-5	/* Illegal msr value */
42 #define H_PTEG_FULL	-6	/* PTEG is full */
43 #define H_NOT_FOUND	-7	/* PTE was not found" */
44 #define H_RESERVED_DABR	-8	/* DABR address is reserved by the hypervisor on this processor" */
45 #define H_NO_MEM	-9
46 #define H_AUTHORITY	-10
47 #define H_PERMISSION	-11
48 #define H_DROPPED	-12
49 #define H_SOURCE_PARM	-13
50 #define H_DEST_PARM	-14
51 #define H_REMOTE_PARM	-15
52 #define H_RESOURCE	-16
53 #define H_ADAPTER_PARM  -17
54 #define H_RH_PARM       -18
55 #define H_RCQ_PARM      -19
56 #define H_SCQ_PARM      -20
57 #define H_EQ_PARM       -21
58 #define H_RT_PARM       -22
59 #define H_ST_PARM       -23
60 #define H_SIGT_PARM     -24
61 #define H_TOKEN_PARM    -25
62 #define H_MLENGTH_PARM  -27
63 #define H_MEM_PARM      -28
64 #define H_MEM_ACCESS_PARM -29
65 #define H_ATTR_PARM     -30
66 #define H_PORT_PARM     -31
67 #define H_MCG_PARM      -32
68 #define H_VL_PARM       -33
69 #define H_TSIZE_PARM    -34
70 #define H_TRACE_PARM    -35
71 
72 #define H_MASK_PARM     -37
73 #define H_MCG_FULL      -38
74 #define H_ALIAS_EXIST   -39
75 #define H_P_COUNTER     -40
76 #define H_TABLE_FULL    -41
77 #define H_ALT_TABLE     -42
78 #define H_MR_CONDITION  -43
79 #define H_NOT_ENOUGH_RESOURCES -44
80 #define H_R_STATE       -45
81 #define H_RESCINDED     -46
82 #define H_P2		-55
83 #define H_P3		-56
84 #define H_P4		-57
85 #define H_P5		-58
86 #define H_P6		-59
87 #define H_P7		-60
88 #define H_P8		-61
89 #define H_P9		-62
90 #define H_TOO_BIG	-64
91 #define H_UNSUPPORTED	-67
92 #define H_OVERLAP	-68
93 #define H_INTERRUPT	-69
94 #define H_BAD_DATA	-70
95 #define H_NOT_ACTIVE	-71
96 #define H_SG_LIST	-72
97 #define H_OP_MODE	-73
98 #define H_COP_HW	-74
99 #define H_STATE		-75
100 #define H_UNSUPPORTED_FLAG_START	-256
101 #define H_UNSUPPORTED_FLAG_END		-511
102 #define H_MULTI_THREADS_ACTIVE	-9005
103 #define H_OUTSTANDING_COP_OPS	-9006
104 
105 
106 /* Long Busy is a condition that can be returned by the firmware
107  * when a call cannot be completed now, but the identical call
108  * should be retried later.  This prevents calls blocking in the
109  * firmware for long periods of time.  Annoyingly the firmware can return
110  * a range of return codes, hinting at how long we should wait before
111  * retrying.  If you don't care for the hint, the macro below is a good
112  * way to check for the long_busy return codes
113  */
114 #define H_IS_LONG_BUSY(x)  ((x >= H_LONG_BUSY_START_RANGE) \
115 			     && (x <= H_LONG_BUSY_END_RANGE))
116 
117 /* Flags */
118 #define H_LARGE_PAGE		(1UL<<(63-16))
119 #define H_EXACT			(1UL<<(63-24))	/* Use exact PTE or return H_PTEG_FULL */
120 #define H_R_XLATE		(1UL<<(63-25))	/* include a valid logical page num in the pte if the valid bit is set */
121 #define H_READ_4		(1UL<<(63-26))	/* Return 4 PTEs */
122 #define H_PAGE_STATE_CHANGE	(1UL<<(63-28))
123 #define H_PAGE_UNUSED		((1UL<<(63-29)) | (1UL<<(63-30)))
124 #define H_PAGE_SET_UNUSED	(H_PAGE_STATE_CHANGE | H_PAGE_UNUSED)
125 #define H_PAGE_SET_LOANED	(H_PAGE_SET_UNUSED | (1UL<<(63-31)))
126 #define H_PAGE_SET_ACTIVE	H_PAGE_STATE_CHANGE
127 #define H_AVPN			(1UL<<(63-32))	/* An avpn is provided as a sanity test */
128 #define H_ANDCOND		(1UL<<(63-33))
129 #define H_LOCAL			(1UL<<(63-35))
130 #define H_ICACHE_INVALIDATE	(1UL<<(63-40))	/* icbi, etc.  (ignored for IO pages) */
131 #define H_ICACHE_SYNCHRONIZE	(1UL<<(63-41))	/* dcbst, icbi, etc (ignored for IO pages */
132 #define H_COALESCE_CAND	(1UL<<(63-42))	/* page is a good candidate for coalescing */
133 #define H_ZERO_PAGE		(1UL<<(63-48))	/* zero the page before mapping (ignored for IO pages) */
134 #define H_COPY_PAGE		(1UL<<(63-49))
135 #define H_N			(1UL<<(63-61))
136 #define H_PP1			(1UL<<(63-62))
137 #define H_PP2			(1UL<<(63-63))
138 
139 /* Flags for H_REGISTER_VPA subfunction field */
140 #define H_VPA_FUNC_SHIFT	(63-18)	/* Bit posn of subfunction code */
141 #define H_VPA_FUNC_MASK		7UL
142 #define H_VPA_REG_VPA		1UL	/* Register Virtual Processor Area */
143 #define H_VPA_REG_DTL		2UL	/* Register Dispatch Trace Log */
144 #define H_VPA_REG_SLB		3UL	/* Register SLB shadow buffer */
145 #define H_VPA_DEREG_VPA		5UL	/* Deregister Virtual Processor Area */
146 #define H_VPA_DEREG_DTL		6UL	/* Deregister Dispatch Trace Log */
147 #define H_VPA_DEREG_SLB		7UL	/* Deregister SLB shadow buffer */
148 
149 /* VASI States */
150 #define H_VASI_INVALID          0
151 #define H_VASI_ENABLED          1
152 #define H_VASI_ABORTED          2
153 #define H_VASI_SUSPENDING       3
154 #define H_VASI_SUSPENDED        4
155 #define H_VASI_RESUMED          5
156 #define H_VASI_COMPLETED        6
157 
158 /* Each control block has to be on a 4K boundary */
159 #define H_CB_ALIGNMENT          4096
160 
161 /* pSeries hypervisor opcodes */
162 #define H_REMOVE		0x04
163 #define H_ENTER			0x08
164 #define H_READ			0x0c
165 #define H_CLEAR_MOD		0x10
166 #define H_CLEAR_REF		0x14
167 #define H_PROTECT		0x18
168 #define H_GET_TCE		0x1c
169 #define H_PUT_TCE		0x20
170 #define H_SET_SPRG0		0x24
171 #define H_SET_DABR		0x28
172 #define H_PAGE_INIT		0x2c
173 #define H_SET_ASR		0x30
174 #define H_ASR_ON		0x34
175 #define H_ASR_OFF		0x38
176 #define H_LOGICAL_CI_LOAD	0x3c
177 #define H_LOGICAL_CI_STORE	0x40
178 #define H_LOGICAL_CACHE_LOAD	0x44
179 #define H_LOGICAL_CACHE_STORE	0x48
180 #define H_LOGICAL_ICBI		0x4c
181 #define H_LOGICAL_DCBF		0x50
182 #define H_GET_TERM_CHAR		0x54
183 #define H_PUT_TERM_CHAR		0x58
184 #define H_REAL_TO_LOGICAL	0x5c
185 #define H_HYPERVISOR_DATA	0x60
186 #define H_EOI			0x64
187 #define H_CPPR			0x68
188 #define H_IPI			0x6c
189 #define H_IPOLL			0x70
190 #define H_XIRR			0x74
191 #define H_PERFMON		0x7c
192 #define H_MIGRATE_DMA		0x78
193 #define H_REGISTER_VPA		0xDC
194 #define H_CEDE			0xE0
195 #define H_CONFER		0xE4
196 #define H_PROD			0xE8
197 #define H_GET_PPP		0xEC
198 #define H_SET_PPP		0xF0
199 #define H_PURR			0xF4
200 #define H_PIC			0xF8
201 #define H_REG_CRQ		0xFC
202 #define H_FREE_CRQ		0x100
203 #define H_VIO_SIGNAL		0x104
204 #define H_SEND_CRQ		0x108
205 #define H_COPY_RDMA		0x110
206 #define H_REGISTER_LOGICAL_LAN	0x114
207 #define H_FREE_LOGICAL_LAN	0x118
208 #define H_ADD_LOGICAL_LAN_BUFFER 0x11C
209 #define H_SEND_LOGICAL_LAN	0x120
210 #define H_BULK_REMOVE		0x124
211 #define H_MULTICAST_CTRL	0x130
212 #define H_SET_XDABR		0x134
213 #define H_STUFF_TCE		0x138
214 #define H_PUT_TCE_INDIRECT	0x13C
215 #define H_CHANGE_LOGICAL_LAN_MAC 0x14C
216 #define H_VTERM_PARTNER_INFO	0x150
217 #define H_REGISTER_VTERM	0x154
218 #define H_FREE_VTERM		0x158
219 #define H_RESET_EVENTS          0x15C
220 #define H_ALLOC_RESOURCE        0x160
221 #define H_FREE_RESOURCE         0x164
222 #define H_MODIFY_QP             0x168
223 #define H_QUERY_QP              0x16C
224 #define H_REREGISTER_PMR        0x170
225 #define H_REGISTER_SMR          0x174
226 #define H_QUERY_MR              0x178
227 #define H_QUERY_MW              0x17C
228 #define H_QUERY_HCA             0x180
229 #define H_QUERY_PORT            0x184
230 #define H_MODIFY_PORT           0x188
231 #define H_DEFINE_AQP1           0x18C
232 #define H_GET_TRACE_BUFFER      0x190
233 #define H_DEFINE_AQP0           0x194
234 #define H_RESIZE_MR             0x198
235 #define H_ATTACH_MCQP           0x19C
236 #define H_DETACH_MCQP           0x1A0
237 #define H_CREATE_RPT            0x1A4
238 #define H_REMOVE_RPT            0x1A8
239 #define H_REGISTER_RPAGES       0x1AC
240 #define H_DISABLE_AND_GETC      0x1B0
241 #define H_ERROR_DATA            0x1B4
242 #define H_GET_HCA_INFO          0x1B8
243 #define H_GET_PERF_COUNT        0x1BC
244 #define H_MANAGE_TRACE          0x1C0
245 #define H_GET_CPU_CHARACTERISTICS 0x1C8
246 #define H_FREE_LOGICAL_LAN_BUFFER 0x1D4
247 #define H_QUERY_INT_STATE       0x1E4
248 #define H_POLL_PENDING		0x1D8
249 #define H_ILLAN_ATTRIBUTES	0x244
250 #define H_MODIFY_HEA_QP		0x250
251 #define H_QUERY_HEA_QP		0x254
252 #define H_QUERY_HEA		0x258
253 #define H_QUERY_HEA_PORT	0x25C
254 #define H_MODIFY_HEA_PORT	0x260
255 #define H_REG_BCMC		0x264
256 #define H_DEREG_BCMC		0x268
257 #define H_REGISTER_HEA_RPAGES	0x26C
258 #define H_DISABLE_AND_GET_HEA	0x270
259 #define H_GET_HEA_INFO		0x274
260 #define H_ALLOC_HEA_RESOURCE	0x278
261 #define H_ADD_CONN		0x284
262 #define H_DEL_CONN		0x288
263 #define H_JOIN			0x298
264 #define H_VASI_STATE            0x2A4
265 #define H_VIOCTL		0x2A8
266 #define H_ENABLE_CRQ		0x2B0
267 #define H_GET_EM_PARMS		0x2B8
268 #define H_SET_MPP		0x2D0
269 #define H_GET_MPP		0x2D4
270 #define H_REG_SUB_CRQ		0x2DC
271 #define H_HOME_NODE_ASSOCIATIVITY 0x2EC
272 #define H_FREE_SUB_CRQ		0x2E0
273 #define H_SEND_SUB_CRQ		0x2E4
274 #define H_SEND_SUB_CRQ_INDIRECT	0x2E8
275 #define H_BEST_ENERGY		0x2F4
276 #define H_XIRR_X		0x2FC
277 #define H_RANDOM		0x300
278 #define H_COP			0x304
279 #define H_GET_MPP_X		0x314
280 #define H_SET_MODE		0x31C
281 #define H_BLOCK_REMOVE		0x328
282 #define H_CLEAR_HPT		0x358
283 #define H_REQUEST_VMC		0x360
284 #define H_RESIZE_HPT_PREPARE	0x36C
285 #define H_RESIZE_HPT_COMMIT	0x370
286 #define H_REGISTER_PROC_TBL	0x37C
287 #define H_SIGNAL_SYS_RESET	0x380
288 #define H_INT_GET_SOURCE_INFO   0x3A8
289 #define H_INT_SET_SOURCE_CONFIG 0x3AC
290 #define H_INT_GET_SOURCE_CONFIG 0x3B0
291 #define H_INT_GET_QUEUE_INFO    0x3B4
292 #define H_INT_SET_QUEUE_CONFIG  0x3B8
293 #define H_INT_GET_QUEUE_CONFIG  0x3BC
294 #define H_INT_SET_OS_REPORTING_LINE 0x3C0
295 #define H_INT_GET_OS_REPORTING_LINE 0x3C4
296 #define H_INT_ESB               0x3C8
297 #define H_INT_SYNC              0x3CC
298 #define H_INT_RESET             0x3D0
299 #define H_SCM_READ_METADATA     0x3E4
300 #define H_SCM_WRITE_METADATA    0x3E8
301 #define H_SCM_BIND_MEM          0x3EC
302 #define H_SCM_UNBIND_MEM        0x3F0
303 #define H_SCM_QUERY_BLOCK_MEM_BINDING 0x3F4
304 #define H_SCM_QUERY_LOGICAL_MEM_BINDING 0x3F8
305 #define H_SCM_UNBIND_ALL        0x3FC
306 #define H_SCM_HEALTH            0x400
307 #define H_SCM_PERFORMANCE_STATS 0x418
308 #define MAX_HCALL_OPCODE	H_SCM_PERFORMANCE_STATS
309 
310 /* Scope args for H_SCM_UNBIND_ALL */
311 #define H_UNBIND_SCOPE_ALL (0x1)
312 #define H_UNBIND_SCOPE_DRC (0x2)
313 
314 /* H_VIOCTL functions */
315 #define H_GET_VIOA_DUMP_SIZE	0x01
316 #define H_GET_VIOA_DUMP		0x02
317 #define H_GET_ILLAN_NUM_VLAN_IDS 0x03
318 #define H_GET_ILLAN_VLAN_ID_LIST 0x04
319 #define H_GET_ILLAN_SWITCH_ID	0x05
320 #define H_DISABLE_MIGRATION	0x06
321 #define H_ENABLE_MIGRATION	0x07
322 #define H_GET_PARTNER_INFO	0x08
323 #define H_GET_PARTNER_WWPN_LIST	0x09
324 #define H_DISABLE_ALL_VIO_INTS	0x0A
325 #define H_DISABLE_VIO_INTERRUPT	0x0B
326 #define H_ENABLE_VIO_INTERRUPT	0x0C
327 #define H_GET_SESSION_TOKEN	0x19
328 #define H_SESSION_ERR_DETECTED	0x1A
329 
330 
331 /* Platform specific hcalls, used by KVM */
332 #define H_RTAS			0xf000
333 
334 /* "Platform specific hcalls", provided by PHYP */
335 #define H_GET_24X7_CATALOG_PAGE	0xF078
336 #define H_GET_24X7_DATA		0xF07C
337 #define H_GET_PERF_COUNTER_INFO	0xF080
338 
339 /* Platform-specific hcalls used for nested HV KVM */
340 #define H_SET_PARTITION_TABLE	0xF800
341 #define H_ENTER_NESTED		0xF804
342 #define H_TLB_INVALIDATE	0xF808
343 #define H_COPY_TOFROM_GUEST	0xF80C
344 
345 /* Values for 2nd argument to H_SET_MODE */
346 #define H_SET_MODE_RESOURCE_SET_CIABR		1
347 #define H_SET_MODE_RESOURCE_SET_DAWR		2
348 #define H_SET_MODE_RESOURCE_ADDR_TRANS_MODE	3
349 #define H_SET_MODE_RESOURCE_LE			4
350 
351 /* Values for argument to H_SIGNAL_SYS_RESET */
352 #define H_SIGNAL_SYS_RESET_ALL			-1
353 #define H_SIGNAL_SYS_RESET_ALL_OTHERS		-2
354 /* >= 0 values are CPU number */
355 
356 /* H_GET_CPU_CHARACTERISTICS return values */
357 #define H_CPU_CHAR_SPEC_BAR_ORI31	(1ull << 63) // IBM bit 0
358 #define H_CPU_CHAR_BCCTRL_SERIALISED	(1ull << 62) // IBM bit 1
359 #define H_CPU_CHAR_L1D_FLUSH_ORI30	(1ull << 61) // IBM bit 2
360 #define H_CPU_CHAR_L1D_FLUSH_TRIG2	(1ull << 60) // IBM bit 3
361 #define H_CPU_CHAR_L1D_THREAD_PRIV	(1ull << 59) // IBM bit 4
362 #define H_CPU_CHAR_BRANCH_HINTS_HONORED	(1ull << 58) // IBM bit 5
363 #define H_CPU_CHAR_THREAD_RECONFIG_CTRL	(1ull << 57) // IBM bit 6
364 #define H_CPU_CHAR_COUNT_CACHE_DISABLED	(1ull << 56) // IBM bit 7
365 #define H_CPU_CHAR_BCCTR_FLUSH_ASSIST	(1ull << 54) // IBM bit 9
366 
367 #define H_CPU_BEHAV_FAVOUR_SECURITY	(1ull << 63) // IBM bit 0
368 #define H_CPU_BEHAV_L1D_FLUSH_PR	(1ull << 62) // IBM bit 1
369 #define H_CPU_BEHAV_BNDS_CHK_SPEC_BAR	(1ull << 61) // IBM bit 2
370 #define H_CPU_BEHAV_FLUSH_COUNT_CACHE	(1ull << 58) // IBM bit 5
371 
372 /* Flag values used in H_REGISTER_PROC_TBL hcall */
373 #define PROC_TABLE_OP_MASK	0x18
374 #define PROC_TABLE_DEREG	0x10
375 #define PROC_TABLE_NEW		0x18
376 #define PROC_TABLE_TYPE_MASK	0x06
377 #define PROC_TABLE_HPT_SLB	0x00
378 #define PROC_TABLE_HPT_PT	0x02
379 #define PROC_TABLE_RADIX	0x04
380 #define PROC_TABLE_GTSE		0x01
381 
382 #ifndef __ASSEMBLY__
383 #include <linux/types.h>
384 
385 /**
386  * plpar_hcall_norets: - Make a pseries hypervisor call with no return arguments
387  * @opcode: The hypervisor call to make.
388  *
389  * This call supports up to 7 arguments and only returns the status of
390  * the hcall. Use this version where possible, its slightly faster than
391  * the other plpar_hcalls.
392  */
393 long plpar_hcall_norets(unsigned long opcode, ...);
394 
395 /**
396  * plpar_hcall: - Make a pseries hypervisor call
397  * @opcode: The hypervisor call to make.
398  * @retbuf: Buffer to store up to 4 return arguments in.
399  *
400  * This call supports up to 6 arguments and 4 return arguments. Use
401  * PLPAR_HCALL_BUFSIZE to size the return argument buffer.
402  *
403  * Used for all but the craziest of phyp interfaces (see plpar_hcall9)
404  */
405 #define PLPAR_HCALL_BUFSIZE 4
406 long plpar_hcall(unsigned long opcode, unsigned long *retbuf, ...);
407 
408 /**
409  * plpar_hcall_raw: - Make a hypervisor call without calculating hcall stats
410  * @opcode: The hypervisor call to make.
411  * @retbuf: Buffer to store up to 4 return arguments in.
412  *
413  * This call supports up to 6 arguments and 4 return arguments. Use
414  * PLPAR_HCALL_BUFSIZE to size the return argument buffer.
415  *
416  * Used when phyp interface needs to be called in real mode. Similar to
417  * plpar_hcall, but plpar_hcall_raw works in real mode and does not
418  * calculate hypervisor call statistics.
419  */
420 long plpar_hcall_raw(unsigned long opcode, unsigned long *retbuf, ...);
421 
422 /**
423  * plpar_hcall9: - Make a pseries hypervisor call with up to 9 return arguments
424  * @opcode: The hypervisor call to make.
425  * @retbuf: Buffer to store up to 9 return arguments in.
426  *
427  * This call supports up to 9 arguments and 9 return arguments. Use
428  * PLPAR_HCALL9_BUFSIZE to size the return argument buffer.
429  */
430 #define PLPAR_HCALL9_BUFSIZE 9
431 long plpar_hcall9(unsigned long opcode, unsigned long *retbuf, ...);
432 long plpar_hcall9_raw(unsigned long opcode, unsigned long *retbuf, ...);
433 
434 struct hvcall_mpp_data {
435 	unsigned long entitled_mem;
436 	unsigned long mapped_mem;
437 	unsigned short group_num;
438 	unsigned short pool_num;
439 	unsigned char mem_weight;
440 	unsigned char unallocated_mem_weight;
441 	unsigned long unallocated_entitlement;  /* value in bytes */
442 	unsigned long pool_size;
443 	signed long loan_request;
444 	unsigned long backing_mem;
445 };
446 
447 int h_get_mpp(struct hvcall_mpp_data *);
448 
449 struct hvcall_mpp_x_data {
450 	unsigned long coalesced_bytes;
451 	unsigned long pool_coalesced_bytes;
452 	unsigned long pool_purr_cycles;
453 	unsigned long pool_spurr_cycles;
454 	unsigned long reserved[3];
455 };
456 
457 int h_get_mpp_x(struct hvcall_mpp_x_data *mpp_x_data);
458 
459 static inline unsigned int get_longbusy_msecs(int longbusy_rc)
460 {
461 	switch (longbusy_rc) {
462 	case H_LONG_BUSY_ORDER_1_MSEC:
463 		return 1;
464 	case H_LONG_BUSY_ORDER_10_MSEC:
465 		return 10;
466 	case H_LONG_BUSY_ORDER_100_MSEC:
467 		return 100;
468 	case H_LONG_BUSY_ORDER_1_SEC:
469 		return 1000;
470 	case H_LONG_BUSY_ORDER_10_SEC:
471 		return 10000;
472 	case H_LONG_BUSY_ORDER_100_SEC:
473 		return 100000;
474 	default:
475 		return 1;
476 	}
477 }
478 
479 struct h_cpu_char_result {
480 	u64 character;
481 	u64 behaviour;
482 };
483 
484 /* Register state for entering a nested guest with H_ENTER_NESTED */
485 struct hv_guest_state {
486 	u64 version;		/* version of this structure layout */
487 	u32 lpid;
488 	u32 vcpu_token;
489 	/* These registers are hypervisor privileged (at least for writing) */
490 	u64 lpcr;
491 	u64 pcr;
492 	u64 amor;
493 	u64 dpdes;
494 	u64 hfscr;
495 	s64 tb_offset;
496 	u64 dawr0;
497 	u64 dawrx0;
498 	u64 ciabr;
499 	u64 hdec_expiry;
500 	u64 purr;
501 	u64 spurr;
502 	u64 ic;
503 	u64 vtb;
504 	u64 hdar;
505 	u64 hdsisr;
506 	u64 heir;
507 	u64 asdr;
508 	/* These are OS privileged but need to be set late in guest entry */
509 	u64 srr0;
510 	u64 srr1;
511 	u64 sprg[4];
512 	u64 pidr;
513 	u64 cfar;
514 	u64 ppr;
515 };
516 
517 /* Latest version of hv_guest_state structure */
518 #define HV_GUEST_STATE_VERSION	1
519 
520 #endif /* __ASSEMBLY__ */
521 #endif /* __KERNEL__ */
522 #endif /* _ASM_POWERPC_HVCALL_H */
523