xref: /openbmc/linux/arch/powerpc/include/asm/kvm_ppc.h (revision 62e59c4e)
1 /*
2  * This program is free software; you can redistribute it and/or modify
3  * it under the terms of the GNU General Public License, version 2, as
4  * published by the Free Software Foundation.
5  *
6  * This program is distributed in the hope that it will be useful,
7  * but WITHOUT ANY WARRANTY; without even the implied warranty of
8  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
9  * GNU General Public License for more details.
10  *
11  * You should have received a copy of the GNU General Public License
12  * along with this program; if not, write to the Free Software
13  * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
14  *
15  * Copyright IBM Corp. 2008
16  *
17  * Authors: Hollis Blanchard <hollisb@us.ibm.com>
18  */
19 
20 #ifndef __POWERPC_KVM_PPC_H__
21 #define __POWERPC_KVM_PPC_H__
22 
23 /* This file exists just so we can dereference kvm_vcpu, avoiding nested header
24  * dependencies. */
25 
26 #include <linux/mutex.h>
27 #include <linux/timer.h>
28 #include <linux/types.h>
29 #include <linux/kvm_types.h>
30 #include <linux/kvm_host.h>
31 #include <linux/bug.h>
32 #ifdef CONFIG_PPC_BOOK3S
33 #include <asm/kvm_book3s.h>
34 #else
35 #include <asm/kvm_booke.h>
36 #endif
37 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
38 #include <asm/paca.h>
39 #include <asm/xive.h>
40 #include <asm/cpu_has_feature.h>
41 #endif
42 
43 /*
44  * KVMPPC_INST_SW_BREAKPOINT is debug Instruction
45  * for supporting software breakpoint.
46  */
47 #define KVMPPC_INST_SW_BREAKPOINT	0x00dddd00
48 
49 enum emulation_result {
50 	EMULATE_DONE,         /* no further processing */
51 	EMULATE_DO_MMIO,      /* kvm_run filled with MMIO request */
52 	EMULATE_FAIL,         /* can't emulate this instruction */
53 	EMULATE_AGAIN,        /* something went wrong. go again */
54 	EMULATE_EXIT_USER,    /* emulation requires exit to user-space */
55 };
56 
57 enum instruction_fetch_type {
58 	INST_GENERIC,
59 	INST_SC,		/* system call */
60 };
61 
62 enum xlate_instdata {
63 	XLATE_INST,		/* translate instruction address */
64 	XLATE_DATA		/* translate data address */
65 };
66 
67 enum xlate_readwrite {
68 	XLATE_READ,		/* check for read permissions */
69 	XLATE_WRITE		/* check for write permissions */
70 };
71 
72 extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
73 extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
74 extern void kvmppc_handler_highmem(void);
75 
76 extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu);
77 extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
78                               unsigned int rt, unsigned int bytes,
79 			      int is_default_endian);
80 extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
81                                unsigned int rt, unsigned int bytes,
82 			       int is_default_endian);
83 extern int kvmppc_handle_vsx_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
84 				unsigned int rt, unsigned int bytes,
85 			int is_default_endian, int mmio_sign_extend);
86 extern int kvmppc_handle_vmx_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
87 		unsigned int rt, unsigned int bytes, int is_default_endian);
88 extern int kvmppc_handle_vmx_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
89 		unsigned int rs, unsigned int bytes, int is_default_endian);
90 extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
91 			       u64 val, unsigned int bytes,
92 			       int is_default_endian);
93 extern int kvmppc_handle_vsx_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
94 				int rs, unsigned int bytes,
95 				int is_default_endian);
96 
97 extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu,
98 				 enum instruction_fetch_type type, u32 *inst);
99 
100 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
101 		     bool data);
102 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
103 		     bool data);
104 extern int kvmppc_emulate_instruction(struct kvm_run *run,
105                                       struct kvm_vcpu *vcpu);
106 extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu);
107 extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);
108 extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
109 extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb);
110 extern void kvmppc_decrementer_func(struct kvm_vcpu *vcpu);
111 extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu);
112 extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu);
113 extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu);
114 
115 /* Core-specific hooks */
116 
117 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr,
118                            unsigned int gtlb_idx);
119 extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
120 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);
121 extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu);
122 extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu);
123 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
124 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
125 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index,
126                               gva_t eaddr);
127 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu);
128 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu);
129 extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr,
130 			enum xlate_instdata xlid, enum xlate_readwrite xlrw,
131 			struct kvmppc_pte *pte);
132 
133 extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm,
134                                                 unsigned int id);
135 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
136 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
137 extern int kvmppc_core_check_processor_compat(void);
138 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
139                                       struct kvm_translation *tr);
140 
141 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
142 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
143 
144 extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu);
145 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
146 extern void kvmppc_core_queue_machine_check(struct kvm_vcpu *vcpu, ulong flags);
147 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
148 extern void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu);
149 extern void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu);
150 extern void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu);
151 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
152 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
153 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
154                                        struct kvm_interrupt *irq);
155 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu);
156 extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, ulong dear_flags,
157 					ulong esr_flags);
158 extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu,
159 					   ulong dear_flags,
160 					   ulong esr_flags);
161 extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu);
162 extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu,
163 					   ulong esr_flags);
164 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu);
165 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu);
166 
167 extern int kvmppc_booke_init(void);
168 extern void kvmppc_booke_exit(void);
169 
170 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
171 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
172 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu);
173 
174 extern int kvmppc_allocate_hpt(struct kvm_hpt_info *info, u32 order);
175 extern void kvmppc_set_hpt(struct kvm *kvm, struct kvm_hpt_info *info);
176 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, int order);
177 extern void kvmppc_free_hpt(struct kvm_hpt_info *info);
178 extern void kvmppc_rmap_reset(struct kvm *kvm);
179 extern long kvmppc_prepare_vrma(struct kvm *kvm,
180 				struct kvm_userspace_memory_region *mem);
181 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu,
182 			struct kvm_memory_slot *memslot, unsigned long porder);
183 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu);
184 extern long kvm_spapr_tce_attach_iommu_group(struct kvm *kvm, int tablefd,
185 		struct iommu_group *grp);
186 extern void kvm_spapr_tce_release_iommu_group(struct kvm *kvm,
187 		struct iommu_group *grp);
188 extern int kvmppc_switch_mmu_to_hpt(struct kvm *kvm);
189 extern int kvmppc_switch_mmu_to_radix(struct kvm *kvm);
190 extern void kvmppc_setup_partition_table(struct kvm *kvm);
191 
192 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
193 				struct kvm_create_spapr_tce_64 *args);
194 extern struct kvmppc_spapr_tce_table *kvmppc_find_table(
195 		struct kvm *kvm, unsigned long liobn);
196 #define kvmppc_ioba_validate(stt, ioba, npages)                         \
197 		(iommu_tce_check_ioba((stt)->page_shift, (stt)->offset, \
198 				(stt)->size, (ioba), (npages)) ?        \
199 				H_PARAMETER : H_SUCCESS)
200 extern long kvmppc_tce_to_ua(struct kvm *kvm, unsigned long tce,
201 		unsigned long *ua, unsigned long **prmap);
202 extern void kvmppc_tce_put(struct kvmppc_spapr_tce_table *tt,
203 		unsigned long idx, unsigned long tce);
204 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
205 			     unsigned long ioba, unsigned long tce);
206 extern long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu,
207 		unsigned long liobn, unsigned long ioba,
208 		unsigned long tce_list, unsigned long npages);
209 extern long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu,
210 		unsigned long liobn, unsigned long ioba,
211 		unsigned long tce_value, unsigned long npages);
212 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
213 			     unsigned long ioba);
214 extern struct page *kvm_alloc_hpt_cma(unsigned long nr_pages);
215 extern void kvm_free_hpt_cma(struct page *page, unsigned long nr_pages);
216 extern int kvmppc_core_init_vm(struct kvm *kvm);
217 extern void kvmppc_core_destroy_vm(struct kvm *kvm);
218 extern void kvmppc_core_free_memslot(struct kvm *kvm,
219 				     struct kvm_memory_slot *free,
220 				     struct kvm_memory_slot *dont);
221 extern int kvmppc_core_create_memslot(struct kvm *kvm,
222 				      struct kvm_memory_slot *slot,
223 				      unsigned long npages);
224 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
225 				struct kvm_memory_slot *memslot,
226 				const struct kvm_userspace_memory_region *mem);
227 extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
228 				const struct kvm_userspace_memory_region *mem,
229 				const struct kvm_memory_slot *old,
230 				const struct kvm_memory_slot *new,
231 				enum kvm_mr_change change);
232 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm,
233 				      struct kvm_ppc_smmu_info *info);
234 extern void kvmppc_core_flush_memslot(struct kvm *kvm,
235 				      struct kvm_memory_slot *memslot);
236 
237 extern int kvmppc_bookehv_init(void);
238 extern void kvmppc_bookehv_exit(void);
239 
240 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu);
241 
242 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *);
243 extern long kvm_vm_ioctl_resize_hpt_prepare(struct kvm *kvm,
244 					    struct kvm_ppc_resize_hpt *rhpt);
245 extern long kvm_vm_ioctl_resize_hpt_commit(struct kvm *kvm,
246 					   struct kvm_ppc_resize_hpt *rhpt);
247 
248 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq);
249 
250 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp);
251 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu);
252 extern void kvmppc_rtas_tokens_free(struct kvm *kvm);
253 
254 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server,
255 				u32 priority);
256 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server,
257 				u32 *priority);
258 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq);
259 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq);
260 
261 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu);
262 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu);
263 
264 union kvmppc_one_reg {
265 	u32	wval;
266 	u64	dval;
267 	vector128 vval;
268 	u64	vsxval[2];
269 	u32	vsx32val[4];
270 	u16	vsx16val[8];
271 	u8	vsx8val[16];
272 	struct {
273 		u64	addr;
274 		u64	length;
275 	}	vpaval;
276 };
277 
278 struct kvmppc_ops {
279 	struct module *owner;
280 	int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
281 	int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
282 	int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id,
283 			   union kvmppc_one_reg *val);
284 	int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id,
285 			   union kvmppc_one_reg *val);
286 	void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
287 	void (*vcpu_put)(struct kvm_vcpu *vcpu);
288 	void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr);
289 	int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu);
290 	struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id);
291 	void (*vcpu_free)(struct kvm_vcpu *vcpu);
292 	int (*check_requests)(struct kvm_vcpu *vcpu);
293 	int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log);
294 	void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot);
295 	int (*prepare_memory_region)(struct kvm *kvm,
296 				     struct kvm_memory_slot *memslot,
297 				     const struct kvm_userspace_memory_region *mem);
298 	void (*commit_memory_region)(struct kvm *kvm,
299 				     const struct kvm_userspace_memory_region *mem,
300 				     const struct kvm_memory_slot *old,
301 				     const struct kvm_memory_slot *new,
302 				     enum kvm_mr_change change);
303 	int (*unmap_hva_range)(struct kvm *kvm, unsigned long start,
304 			   unsigned long end);
305 	int (*age_hva)(struct kvm *kvm, unsigned long start, unsigned long end);
306 	int (*test_age_hva)(struct kvm *kvm, unsigned long hva);
307 	void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte);
308 	void (*mmu_destroy)(struct kvm_vcpu *vcpu);
309 	void (*free_memslot)(struct kvm_memory_slot *free,
310 			     struct kvm_memory_slot *dont);
311 	int (*create_memslot)(struct kvm_memory_slot *slot,
312 			      unsigned long npages);
313 	int (*init_vm)(struct kvm *kvm);
314 	void (*destroy_vm)(struct kvm *kvm);
315 	int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info);
316 	int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu,
317 			  unsigned int inst, int *advance);
318 	int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val);
319 	int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val);
320 	void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu);
321 	long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl,
322 			      unsigned long arg);
323 	int (*hcall_implemented)(unsigned long hcall);
324 	int (*irq_bypass_add_producer)(struct irq_bypass_consumer *,
325 				       struct irq_bypass_producer *);
326 	void (*irq_bypass_del_producer)(struct irq_bypass_consumer *,
327 					struct irq_bypass_producer *);
328 	int (*configure_mmu)(struct kvm *kvm, struct kvm_ppc_mmuv3_cfg *cfg);
329 	int (*get_rmmu_info)(struct kvm *kvm, struct kvm_ppc_rmmu_info *info);
330 	int (*set_smt_mode)(struct kvm *kvm, unsigned long mode,
331 			    unsigned long flags);
332 	void (*giveup_ext)(struct kvm_vcpu *vcpu, ulong msr);
333 	int (*enable_nested)(struct kvm *kvm);
334 	int (*load_from_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr,
335 			       int size);
336 	int (*store_to_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr,
337 			      int size);
338 };
339 
340 extern struct kvmppc_ops *kvmppc_hv_ops;
341 extern struct kvmppc_ops *kvmppc_pr_ops;
342 
343 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu,
344 				enum instruction_fetch_type type, u32 *inst)
345 {
346 	int ret = EMULATE_DONE;
347 	u32 fetched_inst;
348 
349 	/* Load the instruction manually if it failed to do so in the
350 	 * exit path */
351 	if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED)
352 		ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst);
353 
354 	/*  Write fetch_failed unswapped if the fetch failed */
355 	if (ret == EMULATE_DONE)
356 		fetched_inst = kvmppc_need_byteswap(vcpu) ?
357 				swab32(vcpu->arch.last_inst) :
358 				vcpu->arch.last_inst;
359 	else
360 		fetched_inst = vcpu->arch.last_inst;
361 
362 	*inst = fetched_inst;
363 	return ret;
364 }
365 
366 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm)
367 {
368 	return kvm->arch.kvm_ops == kvmppc_hv_ops;
369 }
370 
371 extern int kvmppc_hwrng_present(void);
372 
373 /*
374  * Cuts out inst bits with ordering according to spec.
375  * That means the leftmost bit is zero. All given bits are included.
376  */
377 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
378 {
379 	u32 r;
380 	u32 mask;
381 
382 	BUG_ON(msb > lsb);
383 
384 	mask = (1 << (lsb - msb + 1)) - 1;
385 	r = (inst >> (63 - lsb)) & mask;
386 
387 	return r;
388 }
389 
390 /*
391  * Replaces inst bits with ordering according to spec.
392  */
393 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
394 {
395 	u32 r;
396 	u32 mask;
397 
398 	BUG_ON(msb > lsb);
399 
400 	mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
401 	r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
402 
403 	return r;
404 }
405 
406 #define one_reg_size(id)	\
407 	(1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
408 
409 #define get_reg_val(id, reg)	({		\
410 	union kvmppc_one_reg __u;		\
411 	switch (one_reg_size(id)) {		\
412 	case 4: __u.wval = (reg); break;	\
413 	case 8: __u.dval = (reg); break;	\
414 	default: BUG();				\
415 	}					\
416 	__u;					\
417 })
418 
419 
420 #define set_reg_val(id, val)	({		\
421 	u64 __v;				\
422 	switch (one_reg_size(id)) {		\
423 	case 4: __v = (val).wval; break;	\
424 	case 8: __v = (val).dval; break;	\
425 	default: BUG();				\
426 	}					\
427 	__v;					\
428 })
429 
430 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
431 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
432 
433 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
434 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
435 
436 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
437 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
438 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
439 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
440 
441 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
442 
443 struct openpic;
444 
445 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
446 extern void kvm_cma_reserve(void) __init;
447 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
448 {
449 	paca_ptrs[cpu]->kvm_hstate.xics_phys = (void __iomem *)addr;
450 }
451 
452 static inline void kvmppc_set_xive_tima(int cpu,
453 					unsigned long phys_addr,
454 					void __iomem *virt_addr)
455 {
456 	paca_ptrs[cpu]->kvm_hstate.xive_tima_phys = (void __iomem *)phys_addr;
457 	paca_ptrs[cpu]->kvm_hstate.xive_tima_virt = virt_addr;
458 }
459 
460 static inline u32 kvmppc_get_xics_latch(void)
461 {
462 	u32 xirr;
463 
464 	xirr = get_paca()->kvm_hstate.saved_xirr;
465 	get_paca()->kvm_hstate.saved_xirr = 0;
466 	return xirr;
467 }
468 
469 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
470 {
471 	paca_ptrs[cpu]->kvm_hstate.host_ipi = host_ipi;
472 }
473 
474 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
475 {
476 	vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu);
477 }
478 
479 extern void kvm_hv_vm_activated(void);
480 extern void kvm_hv_vm_deactivated(void);
481 extern bool kvm_hv_mode_active(void);
482 
483 #else
484 static inline void __init kvm_cma_reserve(void)
485 {}
486 
487 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
488 {}
489 
490 static inline void kvmppc_set_xive_tima(int cpu,
491 					unsigned long phys_addr,
492 					void __iomem *virt_addr)
493 {}
494 
495 static inline u32 kvmppc_get_xics_latch(void)
496 {
497 	return 0;
498 }
499 
500 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
501 {}
502 
503 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
504 {
505 	kvm_vcpu_kick(vcpu);
506 }
507 
508 static inline bool kvm_hv_mode_active(void)		{ return false; }
509 
510 #endif
511 
512 #ifdef CONFIG_KVM_XICS
513 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
514 {
515 	return vcpu->arch.irq_type == KVMPPC_IRQ_XICS;
516 }
517 
518 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
519 				struct kvm *kvm)
520 {
521 	if (kvm && kvm_irq_bypass)
522 		return kvm->arch.pimap;
523 	return NULL;
524 }
525 
526 extern void kvmppc_alloc_host_rm_ops(void);
527 extern void kvmppc_free_host_rm_ops(void);
528 extern void kvmppc_free_pimap(struct kvm *kvm);
529 extern int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall);
530 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu);
531 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd);
532 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu);
533 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
534 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev,
535 			struct kvm_vcpu *vcpu, u32 cpu);
536 extern void kvmppc_xics_ipi_action(void);
537 extern void kvmppc_xics_set_mapped(struct kvm *kvm, unsigned long guest_irq,
538 				   unsigned long host_irq);
539 extern void kvmppc_xics_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
540 				   unsigned long host_irq);
541 extern long kvmppc_deliver_irq_passthru(struct kvm_vcpu *vcpu, __be32 xirr,
542 					struct kvmppc_irq_map *irq_map,
543 					struct kvmppc_passthru_irqmap *pimap,
544 					bool *again);
545 
546 extern int kvmppc_xics_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
547 			       int level, bool line_status);
548 
549 extern int h_ipi_redirect;
550 #else
551 static inline struct kvmppc_passthru_irqmap *kvmppc_get_passthru_irqmap(
552 				struct kvm *kvm)
553 	{ return NULL; }
554 static inline void kvmppc_alloc_host_rm_ops(void) {};
555 static inline void kvmppc_free_host_rm_ops(void) {};
556 static inline void kvmppc_free_pimap(struct kvm *kvm) {};
557 static inline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall)
558 	{ return 0; }
559 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
560 	{ return 0; }
561 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { }
562 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd)
563 	{ return 0; }
564 #endif
565 
566 #ifdef CONFIG_KVM_XIVE
567 /*
568  * Below the first "xive" is the "eXternal Interrupt Virtualization Engine"
569  * ie. P9 new interrupt controller, while the second "xive" is the legacy
570  * "eXternal Interrupt Vector Entry" which is the configuration of an
571  * interrupt on the "xics" interrupt controller on P8 and earlier. Those
572  * two function consume or produce a legacy "XIVE" state from the
573  * new "XIVE" interrupt controller.
574  */
575 extern int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server,
576 				u32 priority);
577 extern int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server,
578 				u32 *priority);
579 extern int kvmppc_xive_int_on(struct kvm *kvm, u32 irq);
580 extern int kvmppc_xive_int_off(struct kvm *kvm, u32 irq);
581 extern void kvmppc_xive_init_module(void);
582 extern void kvmppc_xive_exit_module(void);
583 
584 extern int kvmppc_xive_connect_vcpu(struct kvm_device *dev,
585 				    struct kvm_vcpu *vcpu, u32 cpu);
586 extern void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu);
587 extern int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq,
588 				  struct irq_desc *host_desc);
589 extern int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
590 				  struct irq_desc *host_desc);
591 extern u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu);
592 extern int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
593 
594 extern int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
595 			       int level, bool line_status);
596 extern void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu);
597 #else
598 static inline int kvmppc_xive_set_xive(struct kvm *kvm, u32 irq, u32 server,
599 				       u32 priority) { return -1; }
600 static inline int kvmppc_xive_get_xive(struct kvm *kvm, u32 irq, u32 *server,
601 				       u32 *priority) { return -1; }
602 static inline int kvmppc_xive_int_on(struct kvm *kvm, u32 irq) { return -1; }
603 static inline int kvmppc_xive_int_off(struct kvm *kvm, u32 irq) { return -1; }
604 static inline void kvmppc_xive_init_module(void) { }
605 static inline void kvmppc_xive_exit_module(void) { }
606 
607 static inline int kvmppc_xive_connect_vcpu(struct kvm_device *dev,
608 					   struct kvm_vcpu *vcpu, u32 cpu) { return -EBUSY; }
609 static inline void kvmppc_xive_cleanup_vcpu(struct kvm_vcpu *vcpu) { }
610 static inline int kvmppc_xive_set_mapped(struct kvm *kvm, unsigned long guest_irq,
611 					 struct irq_desc *host_desc) { return -ENODEV; }
612 static inline int kvmppc_xive_clr_mapped(struct kvm *kvm, unsigned long guest_irq,
613 					 struct irq_desc *host_desc) { return -ENODEV; }
614 static inline u64 kvmppc_xive_get_icp(struct kvm_vcpu *vcpu) { return 0; }
615 static inline int kvmppc_xive_set_icp(struct kvm_vcpu *vcpu, u64 icpval) { return -ENOENT; }
616 
617 static inline int kvmppc_xive_set_irq(struct kvm *kvm, int irq_source_id, u32 irq,
618 				      int level, bool line_status) { return -ENODEV; }
619 static inline void kvmppc_xive_push_vcpu(struct kvm_vcpu *vcpu) { }
620 #endif /* CONFIG_KVM_XIVE */
621 
622 #if defined(CONFIG_PPC_POWERNV) && defined(CONFIG_KVM_BOOK3S_64_HANDLER)
623 static inline bool xics_on_xive(void)
624 {
625 	return xive_enabled() && cpu_has_feature(CPU_FTR_HVMODE);
626 }
627 #else
628 static inline bool xics_on_xive(void)
629 {
630 	return false;
631 }
632 #endif
633 
634 /*
635  * Prototypes for functions called only from assembler code.
636  * Having prototypes reduces sparse errors.
637  */
638 long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
639 			 unsigned long ioba, unsigned long tce);
640 long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu,
641 				  unsigned long liobn, unsigned long ioba,
642 				  unsigned long tce_list, unsigned long npages);
643 long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu,
644 			   unsigned long liobn, unsigned long ioba,
645 			   unsigned long tce_value, unsigned long npages);
646 long int kvmppc_rm_h_confer(struct kvm_vcpu *vcpu, int target,
647                             unsigned int yield_count);
648 long kvmppc_h_random(struct kvm_vcpu *vcpu);
649 void kvmhv_commence_exit(int trap);
650 void kvmppc_realmode_machine_check(struct kvm_vcpu *vcpu);
651 void kvmppc_subcore_enter_guest(void);
652 void kvmppc_subcore_exit_guest(void);
653 long kvmppc_realmode_hmi_handler(void);
654 long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
655                     long pte_index, unsigned long pteh, unsigned long ptel);
656 long kvmppc_h_remove(struct kvm_vcpu *vcpu, unsigned long flags,
657                      unsigned long pte_index, unsigned long avpn);
658 long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu);
659 long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags,
660                       unsigned long pte_index, unsigned long avpn,
661                       unsigned long va);
662 long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags,
663                    unsigned long pte_index);
664 long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags,
665                         unsigned long pte_index);
666 long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags,
667                         unsigned long pte_index);
668 long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr,
669                           unsigned long slb_v, unsigned int status, bool data);
670 unsigned long kvmppc_rm_h_xirr(struct kvm_vcpu *vcpu);
671 unsigned long kvmppc_rm_h_xirr_x(struct kvm_vcpu *vcpu);
672 unsigned long kvmppc_rm_h_ipoll(struct kvm_vcpu *vcpu, unsigned long server);
673 int kvmppc_rm_h_ipi(struct kvm_vcpu *vcpu, unsigned long server,
674                     unsigned long mfrr);
675 int kvmppc_rm_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr);
676 int kvmppc_rm_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr);
677 void kvmppc_guest_entry_inject_int(struct kvm_vcpu *vcpu);
678 
679 /*
680  * Host-side operations we want to set up while running in real
681  * mode in the guest operating on the xics.
682  * Currently only VCPU wakeup is supported.
683  */
684 
685 union kvmppc_rm_state {
686 	unsigned long raw;
687 	struct {
688 		u32 in_host;
689 		u32 rm_action;
690 	};
691 };
692 
693 struct kvmppc_host_rm_core {
694 	union kvmppc_rm_state rm_state;
695 	void *rm_data;
696 	char pad[112];
697 };
698 
699 struct kvmppc_host_rm_ops {
700 	struct kvmppc_host_rm_core	*rm_core;
701 	void		(*vcpu_kick)(struct kvm_vcpu *vcpu);
702 };
703 
704 extern struct kvmppc_host_rm_ops *kvmppc_host_rm_ops_hv;
705 
706 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu)
707 {
708 #ifdef CONFIG_KVM_BOOKE_HV
709 	return mfspr(SPRN_GEPR);
710 #elif defined(CONFIG_BOOKE)
711 	return vcpu->arch.epr;
712 #else
713 	return 0;
714 #endif
715 }
716 
717 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr)
718 {
719 #ifdef CONFIG_KVM_BOOKE_HV
720 	mtspr(SPRN_GEPR, epr);
721 #elif defined(CONFIG_BOOKE)
722 	vcpu->arch.epr = epr;
723 #endif
724 }
725 
726 #ifdef CONFIG_KVM_MPIC
727 
728 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu);
729 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu,
730 			     u32 cpu);
731 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu);
732 
733 #else
734 
735 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu)
736 {
737 }
738 
739 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev,
740 		struct kvm_vcpu *vcpu, u32 cpu)
741 {
742 	return -EINVAL;
743 }
744 
745 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp,
746 		struct kvm_vcpu *vcpu)
747 {
748 }
749 
750 #endif /* CONFIG_KVM_MPIC */
751 
752 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
753 			      struct kvm_config_tlb *cfg);
754 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
755 			     struct kvm_dirty_tlb *cfg);
756 
757 long kvmppc_alloc_lpid(void);
758 void kvmppc_claim_lpid(long lpid);
759 void kvmppc_free_lpid(long lpid);
760 void kvmppc_init_lpid(unsigned long nr_lpids);
761 
762 static inline void kvmppc_mmu_flush_icache(kvm_pfn_t pfn)
763 {
764 	struct page *page;
765 	/*
766 	 * We can only access pages that the kernel maps
767 	 * as memory. Bail out for unmapped ones.
768 	 */
769 	if (!pfn_valid(pfn))
770 		return;
771 
772 	/* Clear i-cache for new pages */
773 	page = pfn_to_page(pfn);
774 	if (!test_bit(PG_arch_1, &page->flags)) {
775 		flush_dcache_icache_page(page);
776 		set_bit(PG_arch_1, &page->flags);
777 	}
778 }
779 
780 /*
781  * Shared struct helpers. The shared struct can be little or big endian,
782  * depending on the guest endianness. So expose helpers to all of them.
783  */
784 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu)
785 {
786 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
787 	/* Only Book3S_64 PR supports bi-endian for now */
788 	return vcpu->arch.shared_big_endian;
789 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__)
790 	/* Book3s_64 HV on little endian is always little endian */
791 	return false;
792 #else
793 	return true;
794 #endif
795 }
796 
797 #define SPRNG_WRAPPER_GET(reg, bookehv_spr)				\
798 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu)		\
799 {									\
800 	return mfspr(bookehv_spr);					\
801 }									\
802 
803 #define SPRNG_WRAPPER_SET(reg, bookehv_spr)				\
804 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val)	\
805 {									\
806 	mtspr(bookehv_spr, val);						\
807 }									\
808 
809 #define SHARED_WRAPPER_GET(reg, size)					\
810 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu)		\
811 {									\
812 	if (kvmppc_shared_big_endian(vcpu))				\
813 	       return be##size##_to_cpu(vcpu->arch.shared->reg);	\
814 	else								\
815 	       return le##size##_to_cpu(vcpu->arch.shared->reg);	\
816 }									\
817 
818 #define SHARED_WRAPPER_SET(reg, size)					\
819 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val)	\
820 {									\
821 	if (kvmppc_shared_big_endian(vcpu))				\
822 	       vcpu->arch.shared->reg = cpu_to_be##size(val);		\
823 	else								\
824 	       vcpu->arch.shared->reg = cpu_to_le##size(val);		\
825 }									\
826 
827 #define SHARED_WRAPPER(reg, size)					\
828 	SHARED_WRAPPER_GET(reg, size)					\
829 	SHARED_WRAPPER_SET(reg, size)					\
830 
831 #define SPRNG_WRAPPER(reg, bookehv_spr)					\
832 	SPRNG_WRAPPER_GET(reg, bookehv_spr)				\
833 	SPRNG_WRAPPER_SET(reg, bookehv_spr)				\
834 
835 #ifdef CONFIG_KVM_BOOKE_HV
836 
837 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr)			\
838 	SPRNG_WRAPPER(reg, bookehv_spr)					\
839 
840 #else
841 
842 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr)			\
843 	SHARED_WRAPPER(reg, size)					\
844 
845 #endif
846 
847 SHARED_WRAPPER(critical, 64)
848 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0)
849 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1)
850 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2)
851 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3)
852 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0)
853 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1)
854 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR)
855 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR)
856 SHARED_WRAPPER_GET(msr, 64)
857 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val)
858 {
859 	if (kvmppc_shared_big_endian(vcpu))
860 	       vcpu->arch.shared->msr = cpu_to_be64(val);
861 	else
862 	       vcpu->arch.shared->msr = cpu_to_le64(val);
863 }
864 SHARED_WRAPPER(dsisr, 32)
865 SHARED_WRAPPER(int_pending, 32)
866 SHARED_WRAPPER(sprg4, 64)
867 SHARED_WRAPPER(sprg5, 64)
868 SHARED_WRAPPER(sprg6, 64)
869 SHARED_WRAPPER(sprg7, 64)
870 
871 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr)
872 {
873 	if (kvmppc_shared_big_endian(vcpu))
874 	       return be32_to_cpu(vcpu->arch.shared->sr[nr]);
875 	else
876 	       return le32_to_cpu(vcpu->arch.shared->sr[nr]);
877 }
878 
879 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val)
880 {
881 	if (kvmppc_shared_big_endian(vcpu))
882 	       vcpu->arch.shared->sr[nr] = cpu_to_be32(val);
883 	else
884 	       vcpu->arch.shared->sr[nr] = cpu_to_le32(val);
885 }
886 
887 /*
888  * Please call after prepare_to_enter. This function puts the lazy ee and irq
889  * disabled tracking state back to normal mode, without actually enabling
890  * interrupts.
891  */
892 static inline void kvmppc_fix_ee_before_entry(void)
893 {
894 	trace_hardirqs_on();
895 
896 #ifdef CONFIG_PPC64
897 	/*
898 	 * To avoid races, the caller must have gone directly from having
899 	 * interrupts fully-enabled to hard-disabled.
900 	 */
901 	WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS);
902 
903 	/* Only need to enable IRQs by hard enabling them after this */
904 	local_paca->irq_happened = 0;
905 	irq_soft_mask_set(IRQS_ENABLED);
906 #endif
907 }
908 
909 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb)
910 {
911 	ulong ea;
912 	ulong msr_64bit = 0;
913 
914 	ea = kvmppc_get_gpr(vcpu, rb);
915 	if (ra)
916 		ea += kvmppc_get_gpr(vcpu, ra);
917 
918 #if defined(CONFIG_PPC_BOOK3E_64)
919 	msr_64bit = MSR_CM;
920 #elif defined(CONFIG_PPC_BOOK3S_64)
921 	msr_64bit = MSR_SF;
922 #endif
923 
924 	if (!(kvmppc_get_msr(vcpu) & msr_64bit))
925 		ea = (uint32_t)ea;
926 
927 	return ea;
928 }
929 
930 extern void xics_wake_cpu(int cpu);
931 
932 #endif /* __POWERPC_KVM_PPC_H__ */
933