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1/*
2 * kvm_host.h: used for kvm module, and hold ia64-specific sections.
3 *
4 * Copyright (C) 2007, Intel Corporation.
5 *
6 * Xiantao Zhang <xiantao.zhang@intel.com>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms and conditions of the GNU General Public License,
10 * version 2, as published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
19 * Place - Suite 330, Boston, MA 02111-1307 USA.
20 *
21 */
22
23#ifndef __ASM_KVM_HOST_H
24#define __ASM_KVM_HOST_H
25
26#define KVM_USER_MEM_SLOTS 32
27
28#define KVM_COALESCED_MMIO_PAGE_OFFSET 1
29#define KVM_IRQCHIP_NUM_PINS KVM_IOAPIC_NUM_PINS
30
31/* define exit reasons from vmm to kvm*/
32#define EXIT_REASON_VM_PANIC 0
33#define EXIT_REASON_MMIO_INSTRUCTION 1
34#define EXIT_REASON_PAL_CALL 2
35#define EXIT_REASON_SAL_CALL 3
36#define EXIT_REASON_SWITCH_RR6 4
37#define EXIT_REASON_VM_DESTROY 5
38#define EXIT_REASON_EXTERNAL_INTERRUPT 6
39#define EXIT_REASON_IPI 7
40#define EXIT_REASON_PTC_G 8
41#define EXIT_REASON_DEBUG 20
42
43/*Define vmm address space and vm data space.*/
44#define KVM_VMM_SIZE (__IA64_UL_CONST(16)<<20)
45#define KVM_VMM_SHIFT 24
46#define KVM_VMM_BASE 0xD000000000000000
47#define VMM_SIZE (__IA64_UL_CONST(8)<<20)
48
49/*
50 * Define vm_buffer, used by PAL Services, base address.
51 * Note: vm_buffer is in the VMM-BLOCK, the size must be < 8M
52 */
53#define KVM_VM_BUFFER_BASE (KVM_VMM_BASE + VMM_SIZE)
54#define KVM_VM_BUFFER_SIZE (__IA64_UL_CONST(8)<<20)
55
56/*
57 * kvm guest's data area looks as follow:
58 *
59 * +----------------------+ ------- KVM_VM_DATA_SIZE
60 * | vcpu[n]'s data | | ___________________KVM_STK_OFFSET
61 * | | | / |
62 * | .......... | | /vcpu's struct&stack |
63 * | .......... | | /---------------------|---- 0
64 * | vcpu[5]'s data | | / vpd |
65 * | vcpu[4]'s data | |/-----------------------|
66 * | vcpu[3]'s data | / vtlb |
67 * | vcpu[2]'s data | /|------------------------|
68 * | vcpu[1]'s data |/ | vhpt |
69 * | vcpu[0]'s data |____________________________|
70 * +----------------------+ |
71 * | memory dirty log | |
72 * +----------------------+ |
73 * | vm's data struct | |
74 * +----------------------+ |
75 * | | |
76 * | | |
77 * | | |
78 * | | |
79 * | | |
80 * | | |
81 * | | |
82 * | vm's p2m table | |
83 * | | |
84 * | | |
85 * | | | |
86 * vm's data->| | | |
87 * +----------------------+ ------- 0
88 * To support large memory, needs to increase the size of p2m.
89 * To support more vcpus, needs to ensure it has enough space to
90 * hold vcpus' data.
91 */
92
93#define KVM_VM_DATA_SHIFT 26
94#define KVM_VM_DATA_SIZE (__IA64_UL_CONST(1) << KVM_VM_DATA_SHIFT)
95#define KVM_VM_DATA_BASE (KVM_VMM_BASE + KVM_VM_DATA_SIZE)
96
97#define KVM_P2M_BASE KVM_VM_DATA_BASE
98#define KVM_P2M_SIZE (__IA64_UL_CONST(24) << 20)
99
100#define VHPT_SHIFT 16
101#define VHPT_SIZE (__IA64_UL_CONST(1) << VHPT_SHIFT)
102#define VHPT_NUM_ENTRIES (__IA64_UL_CONST(1) << (VHPT_SHIFT-5))
103
104#define VTLB_SHIFT 16
105#define VTLB_SIZE (__IA64_UL_CONST(1) << VTLB_SHIFT)
106#define VTLB_NUM_ENTRIES (1UL << (VHPT_SHIFT-5))
107
108#define VPD_SHIFT 16
109#define VPD_SIZE (__IA64_UL_CONST(1) << VPD_SHIFT)
110
111#define VCPU_STRUCT_SHIFT 16
112#define VCPU_STRUCT_SIZE (__IA64_UL_CONST(1) << VCPU_STRUCT_SHIFT)
113
114/*
115 * This must match KVM_IA64_VCPU_STACK_{SHIFT,SIZE} arch/ia64/include/asm/kvm.h
116 */
117#define KVM_STK_SHIFT 16
118#define KVM_STK_OFFSET (__IA64_UL_CONST(1)<< KVM_STK_SHIFT)
119
120#define KVM_VM_STRUCT_SHIFT 19
121#define KVM_VM_STRUCT_SIZE (__IA64_UL_CONST(1) << KVM_VM_STRUCT_SHIFT)
122
123#define KVM_MEM_DIRY_LOG_SHIFT 19
124#define KVM_MEM_DIRTY_LOG_SIZE (__IA64_UL_CONST(1) << KVM_MEM_DIRY_LOG_SHIFT)
125
126#ifndef __ASSEMBLY__
127
128/*Define the max vcpus and memory for Guests.*/
129#define KVM_MAX_VCPUS (KVM_VM_DATA_SIZE - KVM_P2M_SIZE - KVM_VM_STRUCT_SIZE -\
130 KVM_MEM_DIRTY_LOG_SIZE) / sizeof(struct kvm_vcpu_data)
131#define KVM_MAX_MEM_SIZE (KVM_P2M_SIZE >> 3 << PAGE_SHIFT)
132
133#define VMM_LOG_LEN 256
134
135#include <linux/types.h>
136#include <linux/mm.h>
137#include <linux/kvm.h>
138#include <linux/kvm_para.h>
139#include <linux/kvm_types.h>
140
141#include <asm/pal.h>
142#include <asm/sal.h>
143#include <asm/page.h>
144
145struct kvm_vcpu_data {
146 char vcpu_vhpt[VHPT_SIZE];
147 char vcpu_vtlb[VTLB_SIZE];
148 char vcpu_vpd[VPD_SIZE];
149 char vcpu_struct[VCPU_STRUCT_SIZE];
150};
151
152struct kvm_vm_data {
153 char kvm_p2m[KVM_P2M_SIZE];
154 char kvm_vm_struct[KVM_VM_STRUCT_SIZE];
155 char kvm_mem_dirty_log[KVM_MEM_DIRTY_LOG_SIZE];
156 struct kvm_vcpu_data vcpu_data[KVM_MAX_VCPUS];
157};
158
159#define VCPU_BASE(n) (KVM_VM_DATA_BASE + \
160 offsetof(struct kvm_vm_data, vcpu_data[n]))
161#define KVM_VM_BASE (KVM_VM_DATA_BASE + \
162 offsetof(struct kvm_vm_data, kvm_vm_struct))
163#define KVM_MEM_DIRTY_LOG_BASE KVM_VM_DATA_BASE + \
164 offsetof(struct kvm_vm_data, kvm_mem_dirty_log)
165
166#define VHPT_BASE(n) (VCPU_BASE(n) + offsetof(struct kvm_vcpu_data, vcpu_vhpt))
167#define VTLB_BASE(n) (VCPU_BASE(n) + offsetof(struct kvm_vcpu_data, vcpu_vtlb))
168#define VPD_BASE(n) (VCPU_BASE(n) + offsetof(struct kvm_vcpu_data, vcpu_vpd))
169#define VCPU_STRUCT_BASE(n) (VCPU_BASE(n) + \
170 offsetof(struct kvm_vcpu_data, vcpu_struct))
171
172/*IO section definitions*/
173#define IOREQ_READ 1
174#define IOREQ_WRITE 0
175
176#define STATE_IOREQ_NONE 0
177#define STATE_IOREQ_READY 1
178#define STATE_IOREQ_INPROCESS 2
179#define STATE_IORESP_READY 3
180
181/*Guest Physical address layout.*/
182#define GPFN_MEM (0UL << 60) /* Guest pfn is normal mem */
183#define GPFN_FRAME_BUFFER (1UL << 60) /* VGA framebuffer */
184#define GPFN_LOW_MMIO (2UL << 60) /* Low MMIO range */
185#define GPFN_PIB (3UL << 60) /* PIB base */
186#define GPFN_IOSAPIC (4UL << 60) /* IOSAPIC base */
187#define GPFN_LEGACY_IO (5UL << 60) /* Legacy I/O base */
188#define GPFN_GFW (6UL << 60) /* Guest Firmware */
189#define GPFN_PHYS_MMIO (7UL << 60) /* Directed MMIO Range */
190
191#define GPFN_IO_MASK (7UL << 60) /* Guest pfn is I/O type */
192#define GPFN_INV_MASK (1UL << 63) /* Guest pfn is invalid */
193#define INVALID_MFN (~0UL)
194#define MEM_G (1UL << 30)
195#define MEM_M (1UL << 20)
196#define MMIO_START (3 * MEM_G)
197#define MMIO_SIZE (512 * MEM_M)
198#define VGA_IO_START 0xA0000UL
199#define VGA_IO_SIZE 0x20000
200#define LEGACY_IO_START (MMIO_START + MMIO_SIZE)
201#define LEGACY_IO_SIZE (64 * MEM_M)
202#define IO_SAPIC_START 0xfec00000UL
203#define IO_SAPIC_SIZE 0x100000
204#define PIB_START 0xfee00000UL
205#define PIB_SIZE 0x200000
206#define GFW_START (4 * MEM_G - 16 * MEM_M)
207#define GFW_SIZE (16 * MEM_M)
208
209/*Deliver mode, defined for ioapic.c*/
210#define dest_Fixed IOSAPIC_FIXED
211#define dest_LowestPrio IOSAPIC_LOWEST_PRIORITY
212
213#define NMI_VECTOR 2
214#define ExtINT_VECTOR 0
215#define NULL_VECTOR (-1)
216#define IA64_SPURIOUS_INT_VECTOR 0x0f
217
218#define VCPU_LID(v) (((u64)(v)->vcpu_id) << 24)
219
220/*
221 *Delivery mode
222 */
223#define SAPIC_DELIV_SHIFT 8
224#define SAPIC_FIXED 0x0
225#define SAPIC_LOWEST_PRIORITY 0x1
226#define SAPIC_PMI 0x2
227#define SAPIC_NMI 0x4
228#define SAPIC_INIT 0x5
229#define SAPIC_EXTINT 0x7
230
231/*
232 * vcpu->requests bit members for arch
233 */
234#define KVM_REQ_PTC_G 32
235#define KVM_REQ_RESUME 33
236
237struct kvm;
238struct kvm_vcpu;
239
240struct kvm_mmio_req {
241 uint64_t addr; /* physical address */
242 uint64_t size; /* size in bytes */
243 uint64_t data; /* data (or paddr of data) */
244 uint8_t state:4;
245 uint8_t dir:1; /* 1=read, 0=write */
246};
247
248/*Pal data struct */
249struct kvm_pal_call{
250 /*In area*/
251 uint64_t gr28;
252 uint64_t gr29;
253 uint64_t gr30;
254 uint64_t gr31;
255 /*Out area*/
256 struct ia64_pal_retval ret;
257};
258
259/* Sal data structure */
260struct kvm_sal_call{
261 /*In area*/
262 uint64_t in0;
263 uint64_t in1;
264 uint64_t in2;
265 uint64_t in3;
266 uint64_t in4;
267 uint64_t in5;
268 uint64_t in6;
269 uint64_t in7;
270 struct sal_ret_values ret;
271};
272
273/*Guest change rr6*/
274struct kvm_switch_rr6 {
275 uint64_t old_rr;
276 uint64_t new_rr;
277};
278
279union ia64_ipi_a{
280 unsigned long val;
281 struct {
282 unsigned long rv : 3;
283 unsigned long ir : 1;
284 unsigned long eid : 8;
285 unsigned long id : 8;
286 unsigned long ib_base : 44;
287 };
288};
289
290union ia64_ipi_d {
291 unsigned long val;
292 struct {
293 unsigned long vector : 8;
294 unsigned long dm : 3;
295 unsigned long ig : 53;
296 };
297};
298
299/*ipi check exit data*/
300struct kvm_ipi_data{
301 union ia64_ipi_a addr;
302 union ia64_ipi_d data;
303};
304
305/*global purge data*/
306struct kvm_ptc_g {
307 unsigned long vaddr;
308 unsigned long rr;
309 unsigned long ps;
310 struct kvm_vcpu *vcpu;
311};
312
313/*Exit control data */
314struct exit_ctl_data{
315 uint32_t exit_reason;
316 uint32_t vm_status;
317 union {
318 struct kvm_mmio_req ioreq;
319 struct kvm_pal_call pal_data;
320 struct kvm_sal_call sal_data;
321 struct kvm_switch_rr6 rr_data;
322 struct kvm_ipi_data ipi_data;
323 struct kvm_ptc_g ptc_g_data;
324 } u;
325};
326
327union pte_flags {
328 unsigned long val;
329 struct {
330 unsigned long p : 1; /*0 */
331 unsigned long : 1; /* 1 */
332 unsigned long ma : 3; /* 2-4 */
333 unsigned long a : 1; /* 5 */
334 unsigned long d : 1; /* 6 */
335 unsigned long pl : 2; /* 7-8 */
336 unsigned long ar : 3; /* 9-11 */
337 unsigned long ppn : 38; /* 12-49 */
338 unsigned long : 2; /* 50-51 */
339 unsigned long ed : 1; /* 52 */
340 };
341};
342
343union ia64_pta {
344 unsigned long val;
345 struct {
346 unsigned long ve : 1;
347 unsigned long reserved0 : 1;
348 unsigned long size : 6;
349 unsigned long vf : 1;
350 unsigned long reserved1 : 6;
351 unsigned long base : 49;
352 };
353};
354
355struct thash_cb {
356 /* THASH base information */
357 struct thash_data *hash; /* hash table pointer */
358 union ia64_pta pta;
359 int num;
360};
361
362struct kvm_vcpu_stat {
363 u32 halt_wakeup;
364};
365
366struct kvm_vcpu_arch {
367 int launched;
368 int last_exit;
369 int last_run_cpu;
370 int vmm_tr_slot;
371 int vm_tr_slot;
372 int sn_rtc_tr_slot;
373
374#define KVM_MP_STATE_RUNNABLE 0
375#define KVM_MP_STATE_UNINITIALIZED 1
376#define KVM_MP_STATE_INIT_RECEIVED 2
377#define KVM_MP_STATE_HALTED 3
378 int mp_state;
379
380#define MAX_PTC_G_NUM 3
381 int ptc_g_count;
382 struct kvm_ptc_g ptc_g_data[MAX_PTC_G_NUM];
383
384 /*halt timer to wake up sleepy vcpus*/
385 struct hrtimer hlt_timer;
386 long ht_active;
387
388 struct kvm_lapic *apic; /* kernel irqchip context */
389 struct vpd *vpd;
390
391 /* Exit data for vmm_transition*/
392 struct exit_ctl_data exit_data;
393
394 cpumask_t cache_coherent_map;
395
396 unsigned long vmm_rr;
397 unsigned long host_rr6;
398 unsigned long psbits[8];
399 unsigned long cr_iipa;
400 unsigned long cr_isr;
401 unsigned long vsa_base;
402 unsigned long dirty_log_lock_pa;
403 unsigned long __gp;
404 /* TR and TC. */
405 struct thash_data itrs[NITRS];
406 struct thash_data dtrs[NDTRS];
407 /* Bit is set if there is a tr/tc for the region. */
408 unsigned char itr_regions;
409 unsigned char dtr_regions;
410 unsigned char tc_regions;
411 /* purge all */
412 unsigned long ptce_base;
413 unsigned long ptce_count[2];
414 unsigned long ptce_stride[2];
415 /* itc/itm */
416 unsigned long last_itc;
417 long itc_offset;
418 unsigned long itc_check;
419 unsigned long timer_check;
420 unsigned int timer_pending;
421 unsigned int timer_fired;
422
423 unsigned long vrr[8];
424 unsigned long ibr[8];
425 unsigned long dbr[8];
426 unsigned long insvc[4]; /* Interrupt in service. */
427 unsigned long xtp;
428
429 unsigned long metaphysical_rr0; /* from kvm_arch (so is pinned) */
430 unsigned long metaphysical_rr4; /* from kvm_arch (so is pinned) */
431 unsigned long metaphysical_saved_rr0; /* from kvm_arch */
432 unsigned long metaphysical_saved_rr4; /* from kvm_arch */
433 unsigned long fp_psr; /*used for lazy float register */
434 unsigned long saved_gp;
435 /*for phycial emulation */
436 int mode_flags;
437 struct thash_cb vtlb;
438 struct thash_cb vhpt;
439 char irq_check;
440 char irq_new_pending;
441
442 unsigned long opcode;
443 unsigned long cause;
444 char log_buf[VMM_LOG_LEN];
445 union context host;
446 union context guest;
447
448 char mmio_data[8];
449};
450
451struct kvm_vm_stat {
452 u64 remote_tlb_flush;
453};
454
455struct kvm_sal_data {
456 unsigned long boot_ip;
457 unsigned long boot_gp;
458};
459
460struct kvm_arch_memory_slot {
461};
462
463struct kvm_arch {
464 spinlock_t dirty_log_lock;
465
466 unsigned long vm_base;
467 unsigned long metaphysical_rr0;
468 unsigned long metaphysical_rr4;
469 unsigned long vmm_init_rr;
470
471 int is_sn2;
472
473 struct kvm_ioapic *vioapic;
474 struct kvm_vm_stat stat;
475 struct kvm_sal_data rdv_sal_data;
476
477 struct list_head assigned_dev_head;
478 struct iommu_domain *iommu_domain;
479 bool iommu_noncoherent;
480
481 unsigned long irq_sources_bitmap;
482 unsigned long irq_states[KVM_IOAPIC_NUM_PINS];
483};
484
485union cpuid3_t {
486 u64 value;
487 struct {
488 u64 number : 8;
489 u64 revision : 8;
490 u64 model : 8;
491 u64 family : 8;
492 u64 archrev : 8;
493 u64 rv : 24;
494 };
495};
496
497struct kvm_pt_regs {
498 /* The following registers are saved by SAVE_MIN: */
499 unsigned long b6; /* scratch */
500 unsigned long b7; /* scratch */
501
502 unsigned long ar_csd; /* used by cmp8xchg16 (scratch) */
503 unsigned long ar_ssd; /* reserved for future use (scratch) */
504
505 unsigned long r8; /* scratch (return value register 0) */
506 unsigned long r9; /* scratch (return value register 1) */
507 unsigned long r10; /* scratch (return value register 2) */
508 unsigned long r11; /* scratch (return value register 3) */
509
510 unsigned long cr_ipsr; /* interrupted task's psr */
511 unsigned long cr_iip; /* interrupted task's instruction pointer */
512 unsigned long cr_ifs; /* interrupted task's function state */
513
514 unsigned long ar_unat; /* interrupted task's NaT register (preserved) */
515 unsigned long ar_pfs; /* prev function state */
516 unsigned long ar_rsc; /* RSE configuration */
517 /* The following two are valid only if cr_ipsr.cpl > 0: */
518 unsigned long ar_rnat; /* RSE NaT */
519 unsigned long ar_bspstore; /* RSE bspstore */
520
521 unsigned long pr; /* 64 predicate registers (1 bit each) */
522 unsigned long b0; /* return pointer (bp) */
523 unsigned long loadrs; /* size of dirty partition << 16 */
524
525 unsigned long r1; /* the gp pointer */
526 unsigned long r12; /* interrupted task's memory stack pointer */
527 unsigned long r13; /* thread pointer */
528
529 unsigned long ar_fpsr; /* floating point status (preserved) */
530 unsigned long r15; /* scratch */
531
532 /* The remaining registers are NOT saved for system calls. */
533 unsigned long r14; /* scratch */
534 unsigned long r2; /* scratch */
535 unsigned long r3; /* scratch */
536 unsigned long r16; /* scratch */
537 unsigned long r17; /* scratch */
538 unsigned long r18; /* scratch */
539 unsigned long r19; /* scratch */
540 unsigned long r20; /* scratch */
541 unsigned long r21; /* scratch */
542 unsigned long r22; /* scratch */
543 unsigned long r23; /* scratch */
544 unsigned long r24; /* scratch */
545 unsigned long r25; /* scratch */
546 unsigned long r26; /* scratch */
547 unsigned long r27; /* scratch */
548 unsigned long r28; /* scratch */
549 unsigned long r29; /* scratch */
550 unsigned long r30; /* scratch */
551 unsigned long r31; /* scratch */
552 unsigned long ar_ccv; /* compare/exchange value (scratch) */
553
554 /*
555 * Floating point registers that the kernel considers scratch:
556 */
557 struct ia64_fpreg f6; /* scratch */
558 struct ia64_fpreg f7; /* scratch */
559 struct ia64_fpreg f8; /* scratch */
560 struct ia64_fpreg f9; /* scratch */
561 struct ia64_fpreg f10; /* scratch */
562 struct ia64_fpreg f11; /* scratch */
563
564 unsigned long r4; /* preserved */
565 unsigned long r5; /* preserved */
566 unsigned long r6; /* preserved */
567 unsigned long r7; /* preserved */
568 unsigned long eml_unat; /* used for emulating instruction */
569 unsigned long pad0; /* alignment pad */
570};
571
572static inline struct kvm_pt_regs *vcpu_regs(struct kvm_vcpu *v)
573{
574 return (struct kvm_pt_regs *) ((unsigned long) v + KVM_STK_OFFSET) - 1;
575}
576
577typedef int kvm_vmm_entry(void);
578typedef void kvm_tramp_entry(union context *host, union context *guest);
579
580struct kvm_vmm_info{
581 struct module *module;
582 kvm_vmm_entry *vmm_entry;
583 kvm_tramp_entry *tramp_entry;
584 unsigned long vmm_ivt;
585 unsigned long patch_mov_ar;
586 unsigned long patch_mov_ar_sn2;
587};
588
589int kvm_highest_pending_irq(struct kvm_vcpu *vcpu);
590int kvm_emulate_halt(struct kvm_vcpu *vcpu);
591int kvm_pal_emul(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
592void kvm_sal_emul(struct kvm_vcpu *vcpu);
593
594#define __KVM_HAVE_ARCH_VM_ALLOC 1
595struct kvm *kvm_arch_alloc_vm(void);
596void kvm_arch_free_vm(struct kvm *kvm);
597
598#endif /* __ASSEMBLY__*/
599
600#endif