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