x86/efi: Enforce CONFIG_RELOCATABLE for EFI boot stub
[linux/fpc-iii.git] / arch / powerpc / include / asm / kvm_host.h
blob33283532e9d8fd8c14bbd376b3112136a134e233
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.
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.
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.
15 * Copyright IBM Corp. 2007
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
20 #ifndef __POWERPC_KVM_HOST_H__
21 #define __POWERPC_KVM_HOST_H__
23 #include <linux/mutex.h>
24 #include <linux/hrtimer.h>
25 #include <linux/interrupt.h>
26 #include <linux/types.h>
27 #include <linux/kvm_types.h>
28 #include <linux/threads.h>
29 #include <linux/spinlock.h>
30 #include <linux/kvm_para.h>
31 #include <linux/list.h>
32 #include <linux/atomic.h>
33 #include <asm/kvm_asm.h>
34 #include <asm/processor.h>
35 #include <asm/page.h>
36 #include <asm/cacheflush.h>
38 #define KVM_MAX_VCPUS NR_CPUS
39 #define KVM_MAX_VCORES NR_CPUS
40 #define KVM_USER_MEM_SLOTS 32
41 #define KVM_MEM_SLOTS_NUM KVM_USER_MEM_SLOTS
43 #ifdef CONFIG_KVM_MMIO
44 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
45 #endif
47 /* These values are internal and can be increased later */
48 #define KVM_NR_IRQCHIPS 1
49 #define KVM_IRQCHIP_NUM_PINS 256
51 #if !defined(CONFIG_KVM_440)
52 #include <linux/mmu_notifier.h>
54 #define KVM_ARCH_WANT_MMU_NOTIFIER
56 struct kvm;
57 extern int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
58 extern int kvm_unmap_hva_range(struct kvm *kvm,
59 unsigned long start, unsigned long end);
60 extern int kvm_age_hva(struct kvm *kvm, unsigned long hva);
61 extern int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
62 extern void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
64 #endif
66 /* We don't currently support large pages. */
67 #define KVM_HPAGE_GFN_SHIFT(x) 0
68 #define KVM_NR_PAGE_SIZES 1
69 #define KVM_PAGES_PER_HPAGE(x) (1UL<<31)
71 #define HPTEG_CACHE_NUM (1 << 15)
72 #define HPTEG_HASH_BITS_PTE 13
73 #define HPTEG_HASH_BITS_PTE_LONG 12
74 #define HPTEG_HASH_BITS_VPTE 13
75 #define HPTEG_HASH_BITS_VPTE_LONG 5
76 #define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
77 #define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
78 #define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
79 #define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
81 /* Physical Address Mask - allowed range of real mode RAM access */
82 #define KVM_PAM 0x0fffffffffffffffULL
84 struct kvm;
85 struct kvm_run;
86 struct kvm_vcpu;
88 struct lppaca;
89 struct slb_shadow;
90 struct dtl_entry;
92 struct kvm_vm_stat {
93 u32 remote_tlb_flush;
96 struct kvm_vcpu_stat {
97 u32 sum_exits;
98 u32 mmio_exits;
99 u32 dcr_exits;
100 u32 signal_exits;
101 u32 light_exits;
102 /* Account for special types of light exits: */
103 u32 itlb_real_miss_exits;
104 u32 itlb_virt_miss_exits;
105 u32 dtlb_real_miss_exits;
106 u32 dtlb_virt_miss_exits;
107 u32 syscall_exits;
108 u32 isi_exits;
109 u32 dsi_exits;
110 u32 emulated_inst_exits;
111 u32 dec_exits;
112 u32 ext_intr_exits;
113 u32 halt_wakeup;
114 u32 dbell_exits;
115 u32 gdbell_exits;
116 #ifdef CONFIG_PPC_BOOK3S
117 u32 pf_storage;
118 u32 pf_instruc;
119 u32 sp_storage;
120 u32 sp_instruc;
121 u32 queue_intr;
122 u32 ld;
123 u32 ld_slow;
124 u32 st;
125 u32 st_slow;
126 #endif
129 enum kvm_exit_types {
130 MMIO_EXITS,
131 DCR_EXITS,
132 SIGNAL_EXITS,
133 ITLB_REAL_MISS_EXITS,
134 ITLB_VIRT_MISS_EXITS,
135 DTLB_REAL_MISS_EXITS,
136 DTLB_VIRT_MISS_EXITS,
137 SYSCALL_EXITS,
138 ISI_EXITS,
139 DSI_EXITS,
140 EMULATED_INST_EXITS,
141 EMULATED_MTMSRWE_EXITS,
142 EMULATED_WRTEE_EXITS,
143 EMULATED_MTSPR_EXITS,
144 EMULATED_MFSPR_EXITS,
145 EMULATED_MTMSR_EXITS,
146 EMULATED_MFMSR_EXITS,
147 EMULATED_TLBSX_EXITS,
148 EMULATED_TLBWE_EXITS,
149 EMULATED_RFI_EXITS,
150 EMULATED_RFCI_EXITS,
151 DEC_EXITS,
152 EXT_INTR_EXITS,
153 HALT_WAKEUP,
154 USR_PR_INST,
155 FP_UNAVAIL,
156 DEBUG_EXITS,
157 TIMEINGUEST,
158 DBELL_EXITS,
159 GDBELL_EXITS,
160 __NUMBER_OF_KVM_EXIT_TYPES
163 /* allow access to big endian 32bit upper/lower parts and 64bit var */
164 struct kvmppc_exit_timing {
165 union {
166 u64 tv64;
167 struct {
168 u32 tbu, tbl;
169 } tv32;
173 struct kvmppc_pginfo {
174 unsigned long pfn;
175 atomic_t refcnt;
178 struct kvmppc_spapr_tce_table {
179 struct list_head list;
180 struct kvm *kvm;
181 u64 liobn;
182 u32 window_size;
183 struct page *pages[0];
186 struct kvm_rma_info {
187 atomic_t use_count;
188 unsigned long base_pfn;
191 /* XICS components, defined in book3s_xics.c */
192 struct kvmppc_xics;
193 struct kvmppc_icp;
196 * The reverse mapping array has one entry for each HPTE,
197 * which stores the guest's view of the second word of the HPTE
198 * (including the guest physical address of the mapping),
199 * plus forward and backward pointers in a doubly-linked ring
200 * of HPTEs that map the same host page. The pointers in this
201 * ring are 32-bit HPTE indexes, to save space.
203 struct revmap_entry {
204 unsigned long guest_rpte;
205 unsigned int forw, back;
209 * We use the top bit of each memslot->arch.rmap entry as a lock bit,
210 * and bit 32 as a present flag. The bottom 32 bits are the
211 * index in the guest HPT of a HPTE that points to the page.
213 #define KVMPPC_RMAP_LOCK_BIT 63
214 #define KVMPPC_RMAP_RC_SHIFT 32
215 #define KVMPPC_RMAP_REFERENCED (HPTE_R_R << KVMPPC_RMAP_RC_SHIFT)
216 #define KVMPPC_RMAP_CHANGED (HPTE_R_C << KVMPPC_RMAP_RC_SHIFT)
217 #define KVMPPC_RMAP_PRESENT 0x100000000ul
218 #define KVMPPC_RMAP_INDEX 0xfffffffful
220 /* Low-order bits in memslot->arch.slot_phys[] */
221 #define KVMPPC_PAGE_ORDER_MASK 0x1f
222 #define KVMPPC_PAGE_NO_CACHE HPTE_R_I /* 0x20 */
223 #define KVMPPC_PAGE_WRITETHRU HPTE_R_W /* 0x40 */
224 #define KVMPPC_GOT_PAGE 0x80
226 struct kvm_arch_memory_slot {
227 #ifdef CONFIG_KVM_BOOK3S_64_HV
228 unsigned long *rmap;
229 unsigned long *slot_phys;
230 #endif /* CONFIG_KVM_BOOK3S_64_HV */
233 struct kvm_arch {
234 unsigned int lpid;
235 #ifdef CONFIG_KVM_BOOK3S_64_HV
236 unsigned long hpt_virt;
237 struct revmap_entry *revmap;
238 unsigned int host_lpid;
239 unsigned long host_lpcr;
240 unsigned long sdr1;
241 unsigned long host_sdr1;
242 int tlbie_lock;
243 unsigned long lpcr;
244 unsigned long rmor;
245 struct kvm_rma_info *rma;
246 unsigned long vrma_slb_v;
247 int rma_setup_done;
248 int using_mmu_notifiers;
249 u32 hpt_order;
250 atomic_t vcpus_running;
251 u32 online_vcores;
252 unsigned long hpt_npte;
253 unsigned long hpt_mask;
254 atomic_t hpte_mod_interest;
255 spinlock_t slot_phys_lock;
256 cpumask_t need_tlb_flush;
257 struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
258 int hpt_cma_alloc;
259 #endif /* CONFIG_KVM_BOOK3S_64_HV */
260 #ifdef CONFIG_PPC_BOOK3S_64
261 struct list_head spapr_tce_tables;
262 struct list_head rtas_tokens;
263 #endif
264 #ifdef CONFIG_KVM_MPIC
265 struct openpic *mpic;
266 #endif
267 #ifdef CONFIG_KVM_XICS
268 struct kvmppc_xics *xics;
269 #endif
273 * Struct for a virtual core.
274 * Note: entry_exit_count combines an entry count in the bottom 8 bits
275 * and an exit count in the next 8 bits. This is so that we can
276 * atomically increment the entry count iff the exit count is 0
277 * without taking the lock.
279 struct kvmppc_vcore {
280 int n_runnable;
281 int n_busy;
282 int num_threads;
283 int entry_exit_count;
284 int n_woken;
285 int nap_count;
286 int napping_threads;
287 u16 pcpu;
288 u16 last_cpu;
289 u8 vcore_state;
290 u8 in_guest;
291 struct list_head runnable_threads;
292 spinlock_t lock;
293 wait_queue_head_t wq;
294 u64 stolen_tb;
295 u64 preempt_tb;
296 struct kvm_vcpu *runner;
299 #define VCORE_ENTRY_COUNT(vc) ((vc)->entry_exit_count & 0xff)
300 #define VCORE_EXIT_COUNT(vc) ((vc)->entry_exit_count >> 8)
302 /* Values for vcore_state */
303 #define VCORE_INACTIVE 0
304 #define VCORE_SLEEPING 1
305 #define VCORE_STARTING 2
306 #define VCORE_RUNNING 3
307 #define VCORE_EXITING 4
310 * Struct used to manage memory for a virtual processor area
311 * registered by a PAPR guest. There are three types of area
312 * that a guest can register.
314 struct kvmppc_vpa {
315 unsigned long gpa; /* Current guest phys addr */
316 void *pinned_addr; /* Address in kernel linear mapping */
317 void *pinned_end; /* End of region */
318 unsigned long next_gpa; /* Guest phys addr for update */
319 unsigned long len; /* Number of bytes required */
320 u8 update_pending; /* 1 => update pinned_addr from next_gpa */
321 bool dirty; /* true => area has been modified by kernel */
324 struct kvmppc_pte {
325 ulong eaddr;
326 u64 vpage;
327 ulong raddr;
328 bool may_read : 1;
329 bool may_write : 1;
330 bool may_execute : 1;
333 struct kvmppc_mmu {
334 /* book3s_64 only */
335 void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
336 u64 (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
337 u64 (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
338 void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
339 void (*slbia)(struct kvm_vcpu *vcpu);
340 /* book3s */
341 void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
342 u32 (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
343 int (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr, struct kvmppc_pte *pte, bool data);
344 void (*reset_msr)(struct kvm_vcpu *vcpu);
345 void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
346 int (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
347 u64 (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
348 bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
351 struct kvmppc_slb {
352 u64 esid;
353 u64 vsid;
354 u64 orige;
355 u64 origv;
356 bool valid : 1;
357 bool Ks : 1;
358 bool Kp : 1;
359 bool nx : 1;
360 bool large : 1; /* PTEs are 16MB */
361 bool tb : 1; /* 1TB segment */
362 bool class : 1;
365 # ifdef CONFIG_PPC_FSL_BOOK3E
366 #define KVMPPC_BOOKE_IAC_NUM 2
367 #define KVMPPC_BOOKE_DAC_NUM 2
368 # else
369 #define KVMPPC_BOOKE_IAC_NUM 4
370 #define KVMPPC_BOOKE_DAC_NUM 2
371 # endif
372 #define KVMPPC_BOOKE_MAX_IAC 4
373 #define KVMPPC_BOOKE_MAX_DAC 2
375 /* KVMPPC_EPR_USER takes precedence over KVMPPC_EPR_KERNEL */
376 #define KVMPPC_EPR_NONE 0 /* EPR not supported */
377 #define KVMPPC_EPR_USER 1 /* exit to userspace to fill EPR */
378 #define KVMPPC_EPR_KERNEL 2 /* in-kernel irqchip */
380 struct kvmppc_booke_debug_reg {
381 u32 dbcr0;
382 u32 dbcr1;
383 u32 dbcr2;
384 #ifdef CONFIG_KVM_E500MC
385 u32 dbcr4;
386 #endif
387 u64 iac[KVMPPC_BOOKE_MAX_IAC];
388 u64 dac[KVMPPC_BOOKE_MAX_DAC];
391 #define KVMPPC_IRQ_DEFAULT 0
392 #define KVMPPC_IRQ_MPIC 1
393 #define KVMPPC_IRQ_XICS 2
395 struct openpic;
397 struct kvm_vcpu_arch {
398 ulong host_stack;
399 u32 host_pid;
400 #ifdef CONFIG_PPC_BOOK3S
401 struct kvmppc_slb slb[64];
402 int slb_max; /* 1 + index of last valid entry in slb[] */
403 int slb_nr; /* total number of entries in SLB */
404 struct kvmppc_mmu mmu;
405 #endif
407 ulong gpr[32];
409 u64 fpr[32];
410 u64 fpscr;
412 #ifdef CONFIG_SPE
413 ulong evr[32];
414 ulong spefscr;
415 ulong host_spefscr;
416 u64 acc;
417 #endif
418 #ifdef CONFIG_ALTIVEC
419 vector128 vr[32];
420 vector128 vscr;
421 #endif
423 #ifdef CONFIG_VSX
424 u64 vsr[64];
425 #endif
427 #ifdef CONFIG_KVM_BOOKE_HV
428 u32 host_mas4;
429 u32 host_mas6;
430 u32 shadow_epcr;
431 u32 shadow_msrp;
432 u32 eplc;
433 u32 epsc;
434 u32 oldpir;
435 #endif
437 #if defined(CONFIG_BOOKE)
438 #if defined(CONFIG_KVM_BOOKE_HV) || defined(CONFIG_64BIT)
439 u32 epcr;
440 #endif
441 #endif
443 #ifdef CONFIG_PPC_BOOK3S
444 /* For Gekko paired singles */
445 u32 qpr[32];
446 #endif
448 ulong pc;
449 ulong ctr;
450 ulong lr;
452 ulong xer;
453 u32 cr;
455 #ifdef CONFIG_PPC_BOOK3S
456 ulong hflags;
457 ulong guest_owned_ext;
458 ulong purr;
459 ulong spurr;
460 ulong dscr;
461 ulong amr;
462 ulong uamor;
463 u32 ctrl;
464 ulong dabr;
465 ulong cfar;
466 #endif
467 u32 vrsave; /* also USPRG0 */
468 u32 mmucr;
469 /* shadow_msr is unused for BookE HV */
470 ulong shadow_msr;
471 ulong csrr0;
472 ulong csrr1;
473 ulong dsrr0;
474 ulong dsrr1;
475 ulong mcsrr0;
476 ulong mcsrr1;
477 ulong mcsr;
478 u32 dec;
479 #ifdef CONFIG_BOOKE
480 u32 decar;
481 #endif
482 u32 tbl;
483 u32 tbu;
484 u32 tcr;
485 ulong tsr; /* we need to perform set/clr_bits() which requires ulong */
486 u32 ivor[64];
487 ulong ivpr;
488 u32 pvr;
490 u32 shadow_pid;
491 u32 shadow_pid1;
492 u32 pid;
493 u32 swap_pid;
495 u32 ccr0;
496 u32 ccr1;
497 u32 dbsr;
499 u64 mmcr[3];
500 u32 pmc[8];
502 #ifdef CONFIG_KVM_EXIT_TIMING
503 struct mutex exit_timing_lock;
504 struct kvmppc_exit_timing timing_exit;
505 struct kvmppc_exit_timing timing_last_enter;
506 u32 last_exit_type;
507 u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
508 u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
509 u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
510 u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
511 u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
512 u64 timing_last_exit;
513 struct dentry *debugfs_exit_timing;
514 #endif
516 #ifdef CONFIG_PPC_BOOK3S
517 ulong fault_dar;
518 u32 fault_dsisr;
519 #endif
521 #ifdef CONFIG_BOOKE
522 ulong fault_dear;
523 ulong fault_esr;
524 ulong queued_dear;
525 ulong queued_esr;
526 spinlock_t wdt_lock;
527 struct timer_list wdt_timer;
528 u32 tlbcfg[4];
529 u32 tlbps[4];
530 u32 mmucfg;
531 u32 eptcfg;
532 u32 epr;
533 u32 crit_save;
534 struct kvmppc_booke_debug_reg dbg_reg;
535 #endif
536 gpa_t paddr_accessed;
537 gva_t vaddr_accessed;
539 u8 io_gpr; /* GPR used as IO source/target */
540 u8 mmio_is_bigendian;
541 u8 mmio_sign_extend;
542 u8 dcr_needed;
543 u8 dcr_is_write;
544 u8 osi_needed;
545 u8 osi_enabled;
546 u8 papr_enabled;
547 u8 watchdog_enabled;
548 u8 sane;
549 u8 cpu_type;
550 u8 hcall_needed;
551 u8 epr_flags; /* KVMPPC_EPR_xxx */
552 u8 epr_needed;
554 u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
556 struct hrtimer dec_timer;
557 struct tasklet_struct tasklet;
558 u64 dec_jiffies;
559 u64 dec_expires;
560 unsigned long pending_exceptions;
561 u8 ceded;
562 u8 prodded;
563 u32 last_inst;
565 wait_queue_head_t *wqp;
566 struct kvmppc_vcore *vcore;
567 int ret;
568 int trap;
569 int state;
570 int ptid;
571 bool timer_running;
572 wait_queue_head_t cpu_run;
574 struct kvm_vcpu_arch_shared *shared;
575 unsigned long magic_page_pa; /* phys addr to map the magic page to */
576 unsigned long magic_page_ea; /* effect. addr to map the magic page to */
578 int irq_type; /* one of KVM_IRQ_* */
579 int irq_cpu_id;
580 struct openpic *mpic; /* KVM_IRQ_MPIC */
581 #ifdef CONFIG_KVM_XICS
582 struct kvmppc_icp *icp; /* XICS presentation controller */
583 #endif
585 #ifdef CONFIG_KVM_BOOK3S_64_HV
586 struct kvm_vcpu_arch_shared shregs;
588 unsigned long pgfault_addr;
589 long pgfault_index;
590 unsigned long pgfault_hpte[2];
592 struct list_head run_list;
593 struct task_struct *run_task;
594 struct kvm_run *kvm_run;
595 pgd_t *pgdir;
597 spinlock_t vpa_update_lock;
598 struct kvmppc_vpa vpa;
599 struct kvmppc_vpa dtl;
600 struct dtl_entry *dtl_ptr;
601 unsigned long dtl_index;
602 u64 stolen_logged;
603 struct kvmppc_vpa slb_shadow;
605 spinlock_t tbacct_lock;
606 u64 busy_stolen;
607 u64 busy_preempt;
608 #endif
611 /* Values for vcpu->arch.state */
612 #define KVMPPC_VCPU_NOTREADY 0
613 #define KVMPPC_VCPU_RUNNABLE 1
614 #define KVMPPC_VCPU_BUSY_IN_HOST 2
616 /* Values for vcpu->arch.io_gpr */
617 #define KVM_MMIO_REG_MASK 0x001f
618 #define KVM_MMIO_REG_EXT_MASK 0xffe0
619 #define KVM_MMIO_REG_GPR 0x0000
620 #define KVM_MMIO_REG_FPR 0x0020
621 #define KVM_MMIO_REG_QPR 0x0040
622 #define KVM_MMIO_REG_FQPR 0x0060
624 #define __KVM_HAVE_ARCH_WQP
625 #define __KVM_HAVE_CREATE_DEVICE
627 #endif /* __POWERPC_KVM_HOST_H__ */