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TOMOYO Linux Cross Reference
Linux/arch/powerpc/include/asm/kvm_ppc.h

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  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 #endif
 40 
 41 enum emulation_result {
 42         EMULATE_DONE,         /* no further processing */
 43         EMULATE_DO_MMIO,      /* kvm_run filled with MMIO request */
 44         EMULATE_DO_DCR,       /* kvm_run filled with DCR request */
 45         EMULATE_FAIL,         /* can't emulate this instruction */
 46         EMULATE_AGAIN,        /* something went wrong. go again */
 47         EMULATE_EXIT_USER,    /* emulation requires exit to user-space */
 48 };
 49 
 50 extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
 51 extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
 52 extern void kvmppc_handler_highmem(void);
 53 
 54 extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu);
 55 extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
 56                               unsigned int rt, unsigned int bytes,
 57                               int is_bigendian);
 58 extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
 59                                unsigned int rt, unsigned int bytes,
 60                                int is_bigendian);
 61 extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
 62                                u64 val, unsigned int bytes, int is_bigendian);
 63 
 64 extern int kvmppc_emulate_instruction(struct kvm_run *run,
 65                                       struct kvm_vcpu *vcpu);
 66 extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);
 67 extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
 68 extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb);
 69 extern void kvmppc_decrementer_func(unsigned long data);
 70 extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu);
 71 extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu);
 72 extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu);
 73 
 74 /* Core-specific hooks */
 75 
 76 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr,
 77                            unsigned int gtlb_idx);
 78 extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
 79 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);
 80 extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu);
 81 extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu);
 82 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
 83 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
 84 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index,
 85                               gva_t eaddr);
 86 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu);
 87 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu);
 88 
 89 extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm,
 90                                                 unsigned int id);
 91 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
 92 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
 93 extern int kvmppc_core_check_processor_compat(void);
 94 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
 95                                       struct kvm_translation *tr);
 96 
 97 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
 98 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
 99 
100 extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu);
101 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
102 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
103 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
104 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
105 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
106                                        struct kvm_interrupt *irq);
107 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu);
108 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu);
109 
110 extern int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
111                                   unsigned int op, int *advance);
112 extern int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn,
113                                      ulong val);
114 extern int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn,
115                                      ulong *val);
116 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu);
117 
118 extern int kvmppc_booke_init(void);
119 extern void kvmppc_booke_exit(void);
120 
121 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
122 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
123 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu);
124 
125 extern long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp);
126 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, u32 *htab_orderp);
127 extern void kvmppc_free_hpt(struct kvm *kvm);
128 extern long kvmppc_prepare_vrma(struct kvm *kvm,
129                                 struct kvm_userspace_memory_region *mem);
130 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu,
131                         struct kvm_memory_slot *memslot, unsigned long porder);
132 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu);
133 
134 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
135                                 struct kvm_create_spapr_tce *args);
136 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
137                              unsigned long ioba, unsigned long tce);
138 extern long kvm_vm_ioctl_allocate_rma(struct kvm *kvm,
139                                 struct kvm_allocate_rma *rma);
140 extern struct kvm_rma_info *kvm_alloc_rma(void);
141 extern void kvm_release_rma(struct kvm_rma_info *ri);
142 extern struct page *kvm_alloc_hpt(unsigned long nr_pages);
143 extern void kvm_release_hpt(struct page *page, unsigned long nr_pages);
144 extern int kvmppc_core_init_vm(struct kvm *kvm);
145 extern void kvmppc_core_destroy_vm(struct kvm *kvm);
146 extern void kvmppc_core_free_memslot(struct kvm_memory_slot *free,
147                                      struct kvm_memory_slot *dont);
148 extern int kvmppc_core_create_memslot(struct kvm_memory_slot *slot,
149                                       unsigned long npages);
150 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
151                                 struct kvm_memory_slot *memslot,
152                                 struct kvm_userspace_memory_region *mem);
153 extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
154                                 struct kvm_userspace_memory_region *mem,
155                                 const struct kvm_memory_slot *old);
156 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm,
157                                       struct kvm_ppc_smmu_info *info);
158 extern void kvmppc_core_flush_memslot(struct kvm *kvm,
159                                       struct kvm_memory_slot *memslot);
160 
161 extern int kvmppc_bookehv_init(void);
162 extern void kvmppc_bookehv_exit(void);
163 
164 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu);
165 
166 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *);
167 
168 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq);
169 
170 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp);
171 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu);
172 extern void kvmppc_rtas_tokens_free(struct kvm *kvm);
173 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server,
174                                 u32 priority);
175 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server,
176                                 u32 *priority);
177 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq);
178 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq);
179 
180 /*
181  * Cuts out inst bits with ordering according to spec.
182  * That means the leftmost bit is zero. All given bits are included.
183  */
184 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
185 {
186         u32 r;
187         u32 mask;
188 
189         BUG_ON(msb > lsb);
190 
191         mask = (1 << (lsb - msb + 1)) - 1;
192         r = (inst >> (63 - lsb)) & mask;
193 
194         return r;
195 }
196 
197 /*
198  * Replaces inst bits with ordering according to spec.
199  */
200 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
201 {
202         u32 r;
203         u32 mask;
204 
205         BUG_ON(msb > lsb);
206 
207         mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
208         r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
209 
210         return r;
211 }
212 
213 union kvmppc_one_reg {
214         u32     wval;
215         u64     dval;
216         vector128 vval;
217         u64     vsxval[2];
218         struct {
219                 u64     addr;
220                 u64     length;
221         }       vpaval;
222 };
223 
224 #define one_reg_size(id)        \
225         (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
226 
227 #define get_reg_val(id, reg)    ({              \
228         union kvmppc_one_reg __u;               \
229         switch (one_reg_size(id)) {             \
230         case 4: __u.wval = (reg); break;        \
231         case 8: __u.dval = (reg); break;        \
232         default: BUG();                         \
233         }                                       \
234         __u;                                    \
235 })
236 
237 
238 #define set_reg_val(id, val)    ({              \
239         u64 __v;                                \
240         switch (one_reg_size(id)) {             \
241         case 4: __v = (val).wval; break;        \
242         case 8: __v = (val).dval; break;        \
243         default: BUG();                         \
244         }                                       \
245         __v;                                    \
246 })
247 
248 void kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
249 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
250 
251 void kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
252 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
253 
254 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
255 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
256 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
257 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
258 
259 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
260 
261 struct openpic;
262 
263 #ifdef CONFIG_KVM_BOOK3S_64_HV
264 extern void kvm_cma_reserve(void) __init;
265 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
266 {
267         paca[cpu].kvm_hstate.xics_phys = addr;
268 }
269 
270 static inline u32 kvmppc_get_xics_latch(void)
271 {
272         u32 xirr = get_paca()->kvm_hstate.saved_xirr;
273 
274         get_paca()->kvm_hstate.saved_xirr = 0;
275 
276         return xirr;
277 }
278 
279 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
280 {
281         paca[cpu].kvm_hstate.host_ipi = host_ipi;
282 }
283 
284 extern void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu);
285 
286 #else
287 static inline void __init kvm_cma_reserve(void)
288 {}
289 
290 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
291 {}
292 
293 static inline u32 kvmppc_get_xics_latch(void)
294 {
295         return 0;
296 }
297 
298 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
299 {}
300 
301 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
302 {
303         kvm_vcpu_kick(vcpu);
304 }
305 #endif
306 
307 #ifdef CONFIG_KVM_XICS
308 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
309 {
310         return vcpu->arch.irq_type == KVMPPC_IRQ_XICS;
311 }
312 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu);
313 extern int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, unsigned long server);
314 extern int kvm_vm_ioctl_xics_irq(struct kvm *kvm, struct kvm_irq_level *args);
315 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd);
316 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu);
317 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
318 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev,
319                         struct kvm_vcpu *vcpu, u32 cpu);
320 #else
321 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
322         { return 0; }
323 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { }
324 static inline int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu,
325                                          unsigned long server)
326         { return -EINVAL; }
327 static inline int kvm_vm_ioctl_xics_irq(struct kvm *kvm,
328                                         struct kvm_irq_level *args)
329         { return -ENOTTY; }
330 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd)
331         { return 0; }
332 #endif
333 
334 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr)
335 {
336 #ifdef CONFIG_KVM_BOOKE_HV
337         mtspr(SPRN_GEPR, epr);
338 #elif defined(CONFIG_BOOKE)
339         vcpu->arch.epr = epr;
340 #endif
341 }
342 
343 #ifdef CONFIG_KVM_MPIC
344 
345 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu);
346 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu,
347                              u32 cpu);
348 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu);
349 
350 #else
351 
352 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu)
353 {
354 }
355 
356 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev,
357                 struct kvm_vcpu *vcpu, u32 cpu)
358 {
359         return -EINVAL;
360 }
361 
362 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp,
363                 struct kvm_vcpu *vcpu)
364 {
365 }
366 
367 #endif /* CONFIG_KVM_MPIC */
368 
369 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
370                               struct kvm_config_tlb *cfg);
371 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
372                              struct kvm_dirty_tlb *cfg);
373 
374 long kvmppc_alloc_lpid(void);
375 void kvmppc_claim_lpid(long lpid);
376 void kvmppc_free_lpid(long lpid);
377 void kvmppc_init_lpid(unsigned long nr_lpids);
378 
379 static inline void kvmppc_mmu_flush_icache(pfn_t pfn)
380 {
381         struct page *page;
382         /*
383          * We can only access pages that the kernel maps
384          * as memory. Bail out for unmapped ones.
385          */
386         if (!pfn_valid(pfn))
387                 return;
388 
389         /* Clear i-cache for new pages */
390         page = pfn_to_page(pfn);
391         if (!test_bit(PG_arch_1, &page->flags)) {
392                 flush_dcache_icache_page(page);
393                 set_bit(PG_arch_1, &page->flags);
394         }
395 }
396 
397 /*
398  * Please call after prepare_to_enter. This function puts the lazy ee and irq
399  * disabled tracking state back to normal mode, without actually enabling
400  * interrupts.
401  */
402 static inline void kvmppc_fix_ee_before_entry(void)
403 {
404         trace_hardirqs_on();
405 
406 #ifdef CONFIG_PPC64
407         /* Only need to enable IRQs by hard enabling them after this */
408         local_paca->irq_happened = 0;
409         local_paca->soft_enabled = 1;
410 #endif
411 }
412 
413 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb)
414 {
415         ulong ea;
416         ulong msr_64bit = 0;
417 
418         ea = kvmppc_get_gpr(vcpu, rb);
419         if (ra)
420                 ea += kvmppc_get_gpr(vcpu, ra);
421 
422 #if defined(CONFIG_PPC_BOOK3E_64)
423         msr_64bit = MSR_CM;
424 #elif defined(CONFIG_PPC_BOOK3S_64)
425         msr_64bit = MSR_SF;
426 #endif
427 
428         if (!(vcpu->arch.shared->msr & msr_64bit))
429                 ea = (uint32_t)ea;
430 
431         return ea;
432 }
433 
434 extern void xics_wake_cpu(int cpu);
435 
436 #endif /* __POWERPC_KVM_PPC_H__ */
437 

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