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

Version: ~ [ linux-5.3-rc8 ] ~ [ linux-5.2.13 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.71 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.142 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.191 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.191 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.73 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  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 /*
 42  * KVMPPC_INST_SW_BREAKPOINT is debug Instruction
 43  * for supporting software breakpoint.
 44  */
 45 #define KVMPPC_INST_SW_BREAKPOINT       0x00dddd00
 46 
 47 enum emulation_result {
 48         EMULATE_DONE,         /* no further processing */
 49         EMULATE_DO_MMIO,      /* kvm_run filled with MMIO request */
 50         EMULATE_FAIL,         /* can't emulate this instruction */
 51         EMULATE_AGAIN,        /* something went wrong. go again */
 52         EMULATE_EXIT_USER,    /* emulation requires exit to user-space */
 53 };
 54 
 55 enum instruction_type {
 56         INST_GENERIC,
 57         INST_SC,                /* system call */
 58 };
 59 
 60 enum xlate_instdata {
 61         XLATE_INST,             /* translate instruction address */
 62         XLATE_DATA              /* translate data address */
 63 };
 64 
 65 enum xlate_readwrite {
 66         XLATE_READ,             /* check for read permissions */
 67         XLATE_WRITE             /* check for write permissions */
 68 };
 69 
 70 extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
 71 extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
 72 extern void kvmppc_handler_highmem(void);
 73 
 74 extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu);
 75 extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
 76                               unsigned int rt, unsigned int bytes,
 77                               int is_default_endian);
 78 extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
 79                                unsigned int rt, unsigned int bytes,
 80                                int is_default_endian);
 81 extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
 82                                u64 val, unsigned int bytes,
 83                                int is_default_endian);
 84 
 85 extern int kvmppc_load_last_inst(struct kvm_vcpu *vcpu,
 86                                  enum instruction_type type, u32 *inst);
 87 
 88 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
 89                      bool data);
 90 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
 91                      bool data);
 92 extern int kvmppc_emulate_instruction(struct kvm_run *run,
 93                                       struct kvm_vcpu *vcpu);
 94 extern int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu);
 95 extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);
 96 extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
 97 extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb);
 98 extern void kvmppc_decrementer_func(struct kvm_vcpu *vcpu);
 99 extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu);
100 extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu);
101 extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu);
102 
103 /* Core-specific hooks */
104 
105 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr,
106                            unsigned int gtlb_idx);
107 extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode);
108 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid);
109 extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu);
110 extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu);
111 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
112 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr);
113 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index,
114                               gva_t eaddr);
115 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu);
116 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu);
117 extern int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr,
118                         enum xlate_instdata xlid, enum xlate_readwrite xlrw,
119                         struct kvmppc_pte *pte);
120 
121 extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm,
122                                                 unsigned int id);
123 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu);
124 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu);
125 extern int kvmppc_core_check_processor_compat(void);
126 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu,
127                                       struct kvm_translation *tr);
128 
129 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
130 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu);
131 
132 extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu);
133 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu);
134 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags);
135 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
136 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
137 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
138                                        struct kvm_interrupt *irq);
139 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu);
140 extern void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, ulong dear_flags,
141                                         ulong esr_flags);
142 extern void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu,
143                                            ulong dear_flags,
144                                            ulong esr_flags);
145 extern void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu);
146 extern void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu,
147                                            ulong esr_flags);
148 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu);
149 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu);
150 
151 extern int kvmppc_booke_init(void);
152 extern void kvmppc_booke_exit(void);
153 
154 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu);
155 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu);
156 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu);
157 
158 extern long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp);
159 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, u32 *htab_orderp);
160 extern void kvmppc_free_hpt(struct kvm *kvm);
161 extern long kvmppc_prepare_vrma(struct kvm *kvm,
162                                 struct kvm_userspace_memory_region *mem);
163 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu,
164                         struct kvm_memory_slot *memslot, unsigned long porder);
165 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu);
166 
167 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
168                                 struct kvm_create_spapr_tce *args);
169 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
170                              unsigned long ioba, unsigned long tce);
171 extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
172                              unsigned long ioba);
173 extern struct page *kvm_alloc_hpt(unsigned long nr_pages);
174 extern void kvm_release_hpt(struct page *page, unsigned long nr_pages);
175 extern int kvmppc_core_init_vm(struct kvm *kvm);
176 extern void kvmppc_core_destroy_vm(struct kvm *kvm);
177 extern void kvmppc_core_free_memslot(struct kvm *kvm,
178                                      struct kvm_memory_slot *free,
179                                      struct kvm_memory_slot *dont);
180 extern int kvmppc_core_create_memslot(struct kvm *kvm,
181                                       struct kvm_memory_slot *slot,
182                                       unsigned long npages);
183 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
184                                 struct kvm_memory_slot *memslot,
185                                 const struct kvm_userspace_memory_region *mem);
186 extern void kvmppc_core_commit_memory_region(struct kvm *kvm,
187                                 const struct kvm_userspace_memory_region *mem,
188                                 const struct kvm_memory_slot *old,
189                                 const struct kvm_memory_slot *new);
190 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm,
191                                       struct kvm_ppc_smmu_info *info);
192 extern void kvmppc_core_flush_memslot(struct kvm *kvm,
193                                       struct kvm_memory_slot *memslot);
194 
195 extern int kvmppc_bookehv_init(void);
196 extern void kvmppc_bookehv_exit(void);
197 
198 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu);
199 
200 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *);
201 
202 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq);
203 
204 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp);
205 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu);
206 extern void kvmppc_rtas_tokens_free(struct kvm *kvm);
207 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server,
208                                 u32 priority);
209 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server,
210                                 u32 *priority);
211 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq);
212 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq);
213 
214 void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu);
215 void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu);
216 
217 union kvmppc_one_reg {
218         u32     wval;
219         u64     dval;
220         vector128 vval;
221         u64     vsxval[2];
222         struct {
223                 u64     addr;
224                 u64     length;
225         }       vpaval;
226 };
227 
228 struct kvmppc_ops {
229         struct module *owner;
230         int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
231         int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
232         int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id,
233                            union kvmppc_one_reg *val);
234         int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id,
235                            union kvmppc_one_reg *val);
236         void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
237         void (*vcpu_put)(struct kvm_vcpu *vcpu);
238         void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr);
239         int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu);
240         struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id);
241         void (*vcpu_free)(struct kvm_vcpu *vcpu);
242         int (*check_requests)(struct kvm_vcpu *vcpu);
243         int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log);
244         void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot);
245         int (*prepare_memory_region)(struct kvm *kvm,
246                                      struct kvm_memory_slot *memslot,
247                                      const struct kvm_userspace_memory_region *mem);
248         void (*commit_memory_region)(struct kvm *kvm,
249                                      const struct kvm_userspace_memory_region *mem,
250                                      const struct kvm_memory_slot *old,
251                                      const struct kvm_memory_slot *new);
252         int (*unmap_hva)(struct kvm *kvm, unsigned long hva);
253         int (*unmap_hva_range)(struct kvm *kvm, unsigned long start,
254                            unsigned long end);
255         int (*age_hva)(struct kvm *kvm, unsigned long start, unsigned long end);
256         int (*test_age_hva)(struct kvm *kvm, unsigned long hva);
257         void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte);
258         void (*mmu_destroy)(struct kvm_vcpu *vcpu);
259         void (*free_memslot)(struct kvm_memory_slot *free,
260                              struct kvm_memory_slot *dont);
261         int (*create_memslot)(struct kvm_memory_slot *slot,
262                               unsigned long npages);
263         int (*init_vm)(struct kvm *kvm);
264         void (*destroy_vm)(struct kvm *kvm);
265         int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info);
266         int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu,
267                           unsigned int inst, int *advance);
268         int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val);
269         int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val);
270         void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu);
271         long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl,
272                               unsigned long arg);
273         int (*hcall_implemented)(unsigned long hcall);
274 };
275 
276 extern struct kvmppc_ops *kvmppc_hv_ops;
277 extern struct kvmppc_ops *kvmppc_pr_ops;
278 
279 static inline int kvmppc_get_last_inst(struct kvm_vcpu *vcpu,
280                                         enum instruction_type type, u32 *inst)
281 {
282         int ret = EMULATE_DONE;
283         u32 fetched_inst;
284 
285         /* Load the instruction manually if it failed to do so in the
286          * exit path */
287         if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED)
288                 ret = kvmppc_load_last_inst(vcpu, type, &vcpu->arch.last_inst);
289 
290         /*  Write fetch_failed unswapped if the fetch failed */
291         if (ret == EMULATE_DONE)
292                 fetched_inst = kvmppc_need_byteswap(vcpu) ?
293                                 swab32(vcpu->arch.last_inst) :
294                                 vcpu->arch.last_inst;
295         else
296                 fetched_inst = vcpu->arch.last_inst;
297 
298         *inst = fetched_inst;
299         return ret;
300 }
301 
302 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm)
303 {
304         return kvm->arch.kvm_ops == kvmppc_hv_ops;
305 }
306 
307 extern int kvmppc_hwrng_present(void);
308 
309 /*
310  * Cuts out inst bits with ordering according to spec.
311  * That means the leftmost bit is zero. All given bits are included.
312  */
313 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb)
314 {
315         u32 r;
316         u32 mask;
317 
318         BUG_ON(msb > lsb);
319 
320         mask = (1 << (lsb - msb + 1)) - 1;
321         r = (inst >> (63 - lsb)) & mask;
322 
323         return r;
324 }
325 
326 /*
327  * Replaces inst bits with ordering according to spec.
328  */
329 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value)
330 {
331         u32 r;
332         u32 mask;
333 
334         BUG_ON(msb > lsb);
335 
336         mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb);
337         r = (inst & ~mask) | ((value << (63 - lsb)) & mask);
338 
339         return r;
340 }
341 
342 #define one_reg_size(id)        \
343         (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
344 
345 #define get_reg_val(id, reg)    ({              \
346         union kvmppc_one_reg __u;               \
347         switch (one_reg_size(id)) {             \
348         case 4: __u.wval = (reg); break;        \
349         case 8: __u.dval = (reg); break;        \
350         default: BUG();                         \
351         }                                       \
352         __u;                                    \
353 })
354 
355 
356 #define set_reg_val(id, val)    ({              \
357         u64 __v;                                \
358         switch (one_reg_size(id)) {             \
359         case 4: __v = (val).wval; break;        \
360         case 8: __v = (val).dval; break;        \
361         default: BUG();                         \
362         }                                       \
363         __v;                                    \
364 })
365 
366 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
367 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
368 
369 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
370 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs);
371 
372 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
373 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg);
374 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
375 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *);
376 
377 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid);
378 
379 struct openpic;
380 
381 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
382 extern void kvm_cma_reserve(void) __init;
383 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
384 {
385         paca[cpu].kvm_hstate.xics_phys = addr;
386 }
387 
388 static inline u32 kvmppc_get_xics_latch(void)
389 {
390         u32 xirr;
391 
392         xirr = get_paca()->kvm_hstate.saved_xirr;
393         get_paca()->kvm_hstate.saved_xirr = 0;
394         return xirr;
395 }
396 
397 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
398 {
399         paca[cpu].kvm_hstate.host_ipi = host_ipi;
400 }
401 
402 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
403 {
404         vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu);
405 }
406 
407 extern void kvm_hv_vm_activated(void);
408 extern void kvm_hv_vm_deactivated(void);
409 extern bool kvm_hv_mode_active(void);
410 
411 #else
412 static inline void __init kvm_cma_reserve(void)
413 {}
414 
415 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr)
416 {}
417 
418 static inline u32 kvmppc_get_xics_latch(void)
419 {
420         return 0;
421 }
422 
423 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi)
424 {}
425 
426 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
427 {
428         kvm_vcpu_kick(vcpu);
429 }
430 
431 static inline bool kvm_hv_mode_active(void)             { return false; }
432 
433 #endif
434 
435 #ifdef CONFIG_KVM_XICS
436 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
437 {
438         return vcpu->arch.irq_type == KVMPPC_IRQ_XICS;
439 }
440 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu);
441 extern int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, unsigned long server);
442 extern int kvm_vm_ioctl_xics_irq(struct kvm *kvm, struct kvm_irq_level *args);
443 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd);
444 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu);
445 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval);
446 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev,
447                         struct kvm_vcpu *vcpu, u32 cpu);
448 #else
449 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu)
450         { return 0; }
451 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { }
452 static inline int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu,
453                                          unsigned long server)
454         { return -EINVAL; }
455 static inline int kvm_vm_ioctl_xics_irq(struct kvm *kvm,
456                                         struct kvm_irq_level *args)
457         { return -ENOTTY; }
458 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd)
459         { return 0; }
460 #endif
461 
462 static inline unsigned long kvmppc_get_epr(struct kvm_vcpu *vcpu)
463 {
464 #ifdef CONFIG_KVM_BOOKE_HV
465         return mfspr(SPRN_GEPR);
466 #elif defined(CONFIG_BOOKE)
467         return vcpu->arch.epr;
468 #else
469         return 0;
470 #endif
471 }
472 
473 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr)
474 {
475 #ifdef CONFIG_KVM_BOOKE_HV
476         mtspr(SPRN_GEPR, epr);
477 #elif defined(CONFIG_BOOKE)
478         vcpu->arch.epr = epr;
479 #endif
480 }
481 
482 #ifdef CONFIG_KVM_MPIC
483 
484 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu);
485 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu,
486                              u32 cpu);
487 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu);
488 
489 #else
490 
491 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu)
492 {
493 }
494 
495 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev,
496                 struct kvm_vcpu *vcpu, u32 cpu)
497 {
498         return -EINVAL;
499 }
500 
501 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp,
502                 struct kvm_vcpu *vcpu)
503 {
504 }
505 
506 #endif /* CONFIG_KVM_MPIC */
507 
508 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu,
509                               struct kvm_config_tlb *cfg);
510 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu,
511                              struct kvm_dirty_tlb *cfg);
512 
513 long kvmppc_alloc_lpid(void);
514 void kvmppc_claim_lpid(long lpid);
515 void kvmppc_free_lpid(long lpid);
516 void kvmppc_init_lpid(unsigned long nr_lpids);
517 
518 static inline void kvmppc_mmu_flush_icache(pfn_t pfn)
519 {
520         struct page *page;
521         /*
522          * We can only access pages that the kernel maps
523          * as memory. Bail out for unmapped ones.
524          */
525         if (!pfn_valid(pfn))
526                 return;
527 
528         /* Clear i-cache for new pages */
529         page = pfn_to_page(pfn);
530         if (!test_bit(PG_arch_1, &page->flags)) {
531                 flush_dcache_icache_page(page);
532                 set_bit(PG_arch_1, &page->flags);
533         }
534 }
535 
536 /*
537  * Shared struct helpers. The shared struct can be little or big endian,
538  * depending on the guest endianness. So expose helpers to all of them.
539  */
540 static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu)
541 {
542 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
543         /* Only Book3S_64 PR supports bi-endian for now */
544         return vcpu->arch.shared_big_endian;
545 #elif defined(CONFIG_PPC_BOOK3S_64) && defined(__LITTLE_ENDIAN__)
546         /* Book3s_64 HV on little endian is always little endian */
547         return false;
548 #else
549         return true;
550 #endif
551 }
552 
553 #define SPRNG_WRAPPER_GET(reg, bookehv_spr)                             \
554 static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu)             \
555 {                                                                       \
556         return mfspr(bookehv_spr);                                      \
557 }                                                                       \
558 
559 #define SPRNG_WRAPPER_SET(reg, bookehv_spr)                             \
560 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val)   \
561 {                                                                       \
562         mtspr(bookehv_spr, val);                                                \
563 }                                                                       \
564 
565 #define SHARED_WRAPPER_GET(reg, size)                                   \
566 static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu)           \
567 {                                                                       \
568         if (kvmppc_shared_big_endian(vcpu))                             \
569                return be##size##_to_cpu(vcpu->arch.shared->reg);        \
570         else                                                            \
571                return le##size##_to_cpu(vcpu->arch.shared->reg);        \
572 }                                                                       \
573 
574 #define SHARED_WRAPPER_SET(reg, size)                                   \
575 static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \
576 {                                                                       \
577         if (kvmppc_shared_big_endian(vcpu))                             \
578                vcpu->arch.shared->reg = cpu_to_be##size(val);           \
579         else                                                            \
580                vcpu->arch.shared->reg = cpu_to_le##size(val);           \
581 }                                                                       \
582 
583 #define SHARED_WRAPPER(reg, size)                                       \
584         SHARED_WRAPPER_GET(reg, size)                                   \
585         SHARED_WRAPPER_SET(reg, size)                                   \
586 
587 #define SPRNG_WRAPPER(reg, bookehv_spr)                                 \
588         SPRNG_WRAPPER_GET(reg, bookehv_spr)                             \
589         SPRNG_WRAPPER_SET(reg, bookehv_spr)                             \
590 
591 #ifdef CONFIG_KVM_BOOKE_HV
592 
593 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr)                    \
594         SPRNG_WRAPPER(reg, bookehv_spr)                                 \
595 
596 #else
597 
598 #define SHARED_SPRNG_WRAPPER(reg, size, bookehv_spr)                    \
599         SHARED_WRAPPER(reg, size)                                       \
600 
601 #endif
602 
603 SHARED_WRAPPER(critical, 64)
604 SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0)
605 SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1)
606 SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2)
607 SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3)
608 SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0)
609 SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1)
610 SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR)
611 SHARED_SPRNG_WRAPPER(esr, 64, SPRN_GESR)
612 SHARED_WRAPPER_GET(msr, 64)
613 static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val)
614 {
615         if (kvmppc_shared_big_endian(vcpu))
616                vcpu->arch.shared->msr = cpu_to_be64(val);
617         else
618                vcpu->arch.shared->msr = cpu_to_le64(val);
619 }
620 SHARED_WRAPPER(dsisr, 32)
621 SHARED_WRAPPER(int_pending, 32)
622 SHARED_WRAPPER(sprg4, 64)
623 SHARED_WRAPPER(sprg5, 64)
624 SHARED_WRAPPER(sprg6, 64)
625 SHARED_WRAPPER(sprg7, 64)
626 
627 static inline u32 kvmppc_get_sr(struct kvm_vcpu *vcpu, int nr)
628 {
629         if (kvmppc_shared_big_endian(vcpu))
630                return be32_to_cpu(vcpu->arch.shared->sr[nr]);
631         else
632                return le32_to_cpu(vcpu->arch.shared->sr[nr]);
633 }
634 
635 static inline void kvmppc_set_sr(struct kvm_vcpu *vcpu, int nr, u32 val)
636 {
637         if (kvmppc_shared_big_endian(vcpu))
638                vcpu->arch.shared->sr[nr] = cpu_to_be32(val);
639         else
640                vcpu->arch.shared->sr[nr] = cpu_to_le32(val);
641 }
642 
643 /*
644  * Please call after prepare_to_enter. This function puts the lazy ee and irq
645  * disabled tracking state back to normal mode, without actually enabling
646  * interrupts.
647  */
648 static inline void kvmppc_fix_ee_before_entry(void)
649 {
650         trace_hardirqs_on();
651 
652 #ifdef CONFIG_PPC64
653         /*
654          * To avoid races, the caller must have gone directly from having
655          * interrupts fully-enabled to hard-disabled.
656          */
657         WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS);
658 
659         /* Only need to enable IRQs by hard enabling them after this */
660         local_paca->irq_happened = 0;
661         local_paca->soft_enabled = 1;
662 #endif
663 }
664 
665 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb)
666 {
667         ulong ea;
668         ulong msr_64bit = 0;
669 
670         ea = kvmppc_get_gpr(vcpu, rb);
671         if (ra)
672                 ea += kvmppc_get_gpr(vcpu, ra);
673 
674 #if defined(CONFIG_PPC_BOOK3E_64)
675         msr_64bit = MSR_CM;
676 #elif defined(CONFIG_PPC_BOOK3S_64)
677         msr_64bit = MSR_SF;
678 #endif
679 
680         if (!(kvmppc_get_msr(vcpu) & msr_64bit))
681                 ea = (uint32_t)ea;
682 
683         return ea;
684 }
685 
686 extern void xics_wake_cpu(int cpu);
687 
688 #endif /* __POWERPC_KVM_PPC_H__ */
689 

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