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linux/arch/ia64/include/asm/kvm_host.h
Jan Kiszka d89f5eff70 KVM: Clean up vm creation and release 
IA64 support forces us to abstract the allocation of the kvm structure.
But instead of mixing this up with arch-specific initialization and
doing the same on destruction, split both steps. This allows to move
generic destruction calls into generic code.

It also fixes error clean-up on failures of kvm_create_vm for IA64.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-01-12 11:29:09 +02:00

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/*
* kvm_host.h: used for kvm module, and hold ia64-specific sections.
*
* Copyright (C) 2007, Intel Corporation.
*
* Xiantao Zhang <xiantao.zhang@intel.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307 USA.
*
*/
#ifndef __ASM_KVM_HOST_H
#define __ASM_KVM_HOST_H
#define KVM_MEMORY_SLOTS 32
/* memory slots that does not exposed to userspace */
#define KVM_PRIVATE_MEM_SLOTS 4
#define KVM_COALESCED_MMIO_PAGE_OFFSET 1
/* define exit reasons from vmm to kvm*/
#define EXIT_REASON_VM_PANIC 0
#define EXIT_REASON_MMIO_INSTRUCTION 1
#define EXIT_REASON_PAL_CALL 2
#define EXIT_REASON_SAL_CALL 3
#define EXIT_REASON_SWITCH_RR6 4
#define EXIT_REASON_VM_DESTROY 5
#define EXIT_REASON_EXTERNAL_INTERRUPT 6
#define EXIT_REASON_IPI 7
#define EXIT_REASON_PTC_G 8
#define EXIT_REASON_DEBUG 20
/*Define vmm address space and vm data space.*/
#define KVM_VMM_SIZE (__IA64_UL_CONST(16)<<20)
#define KVM_VMM_SHIFT 24
#define KVM_VMM_BASE 0xD000000000000000
#define VMM_SIZE (__IA64_UL_CONST(8)<<20)
/*
* Define vm_buffer, used by PAL Services, base address.
* Note: vm_buffer is in the VMM-BLOCK, the size must be < 8M
*/
#define KVM_VM_BUFFER_BASE (KVM_VMM_BASE + VMM_SIZE)
#define KVM_VM_BUFFER_SIZE (__IA64_UL_CONST(8)<<20)
/*
* kvm guest's data area looks as follow:
*
* +----------------------+ ------- KVM_VM_DATA_SIZE
* | vcpu[n]'s data | | ___________________KVM_STK_OFFSET
* | | | / |
* | .......... | | /vcpu's struct&stack |
* | .......... | | /---------------------|---- 0
* | vcpu[5]'s data | | / vpd |
* | vcpu[4]'s data | |/-----------------------|
* | vcpu[3]'s data | / vtlb |
* | vcpu[2]'s data | /|------------------------|
* | vcpu[1]'s data |/ | vhpt |
* | vcpu[0]'s data |____________________________|
* +----------------------+ |
* | memory dirty log | |
* +----------------------+ |
* | vm's data struct | |
* +----------------------+ |
* | | |
* | | |
* | | |
* | | |
* | | |
* | | |
* | | |
* | vm's p2m table | |
* | | |
* | | |
* | | | |
* vm's data->| | | |
* +----------------------+ ------- 0
* To support large memory, needs to increase the size of p2m.
* To support more vcpus, needs to ensure it has enough space to
* hold vcpus' data.
*/
#define KVM_VM_DATA_SHIFT 26
#define KVM_VM_DATA_SIZE (__IA64_UL_CONST(1) << KVM_VM_DATA_SHIFT)
#define KVM_VM_DATA_BASE (KVM_VMM_BASE + KVM_VM_DATA_SIZE)
#define KVM_P2M_BASE KVM_VM_DATA_BASE
#define KVM_P2M_SIZE (__IA64_UL_CONST(24) << 20)
#define VHPT_SHIFT 16
#define VHPT_SIZE (__IA64_UL_CONST(1) << VHPT_SHIFT)
#define VHPT_NUM_ENTRIES (__IA64_UL_CONST(1) << (VHPT_SHIFT-5))
#define VTLB_SHIFT 16
#define VTLB_SIZE (__IA64_UL_CONST(1) << VTLB_SHIFT)
#define VTLB_NUM_ENTRIES (1UL << (VHPT_SHIFT-5))
#define VPD_SHIFT 16
#define VPD_SIZE (__IA64_UL_CONST(1) << VPD_SHIFT)
#define VCPU_STRUCT_SHIFT 16
#define VCPU_STRUCT_SIZE (__IA64_UL_CONST(1) << VCPU_STRUCT_SHIFT)
/*
* This must match KVM_IA64_VCPU_STACK_{SHIFT,SIZE} arch/ia64/include/asm/kvm.h
*/
#define KVM_STK_SHIFT 16
#define KVM_STK_OFFSET (__IA64_UL_CONST(1)<< KVM_STK_SHIFT)
#define KVM_VM_STRUCT_SHIFT 19
#define KVM_VM_STRUCT_SIZE (__IA64_UL_CONST(1) << KVM_VM_STRUCT_SHIFT)
#define KVM_MEM_DIRY_LOG_SHIFT 19
#define KVM_MEM_DIRTY_LOG_SIZE (__IA64_UL_CONST(1) << KVM_MEM_DIRY_LOG_SHIFT)
#ifndef __ASSEMBLY__
/*Define the max vcpus and memory for Guests.*/
#define KVM_MAX_VCPUS (KVM_VM_DATA_SIZE - KVM_P2M_SIZE - KVM_VM_STRUCT_SIZE -\
KVM_MEM_DIRTY_LOG_SIZE) / sizeof(struct kvm_vcpu_data)
#define KVM_MAX_MEM_SIZE (KVM_P2M_SIZE >> 3 << PAGE_SHIFT)
#define VMM_LOG_LEN 256
#include <linux/types.h>
#include <linux/mm.h>
#include <linux/kvm.h>
#include <linux/kvm_para.h>
#include <linux/kvm_types.h>
#include <asm/pal.h>
#include <asm/sal.h>
#include <asm/page.h>
struct kvm_vcpu_data {
char vcpu_vhpt[VHPT_SIZE];
char vcpu_vtlb[VTLB_SIZE];
char vcpu_vpd[VPD_SIZE];
char vcpu_struct[VCPU_STRUCT_SIZE];
};
struct kvm_vm_data {
char kvm_p2m[KVM_P2M_SIZE];
char kvm_vm_struct[KVM_VM_STRUCT_SIZE];
char kvm_mem_dirty_log[KVM_MEM_DIRTY_LOG_SIZE];
struct kvm_vcpu_data vcpu_data[KVM_MAX_VCPUS];
};
#define VCPU_BASE(n) (KVM_VM_DATA_BASE + \
offsetof(struct kvm_vm_data, vcpu_data[n]))
#define KVM_VM_BASE (KVM_VM_DATA_BASE + \
offsetof(struct kvm_vm_data, kvm_vm_struct))
#define KVM_MEM_DIRTY_LOG_BASE KVM_VM_DATA_BASE + \
offsetof(struct kvm_vm_data, kvm_mem_dirty_log)
#define VHPT_BASE(n) (VCPU_BASE(n) + offsetof(struct kvm_vcpu_data, vcpu_vhpt))
#define VTLB_BASE(n) (VCPU_BASE(n) + offsetof(struct kvm_vcpu_data, vcpu_vtlb))
#define VPD_BASE(n) (VCPU_BASE(n) + offsetof(struct kvm_vcpu_data, vcpu_vpd))
#define VCPU_STRUCT_BASE(n) (VCPU_BASE(n) + \
offsetof(struct kvm_vcpu_data, vcpu_struct))
/*IO section definitions*/
#define IOREQ_READ 1
#define IOREQ_WRITE 0
#define STATE_IOREQ_NONE 0
#define STATE_IOREQ_READY 1
#define STATE_IOREQ_INPROCESS 2
#define STATE_IORESP_READY 3
/*Guest Physical address layout.*/
#define GPFN_MEM (0UL << 60) /* Guest pfn is normal mem */
#define GPFN_FRAME_BUFFER (1UL << 60) /* VGA framebuffer */
#define GPFN_LOW_MMIO (2UL << 60) /* Low MMIO range */
#define GPFN_PIB (3UL << 60) /* PIB base */
#define GPFN_IOSAPIC (4UL << 60) /* IOSAPIC base */
#define GPFN_LEGACY_IO (5UL << 60) /* Legacy I/O base */
#define GPFN_GFW (6UL << 60) /* Guest Firmware */
#define GPFN_PHYS_MMIO (7UL << 60) /* Directed MMIO Range */
#define GPFN_IO_MASK (7UL << 60) /* Guest pfn is I/O type */
#define GPFN_INV_MASK (1UL << 63) /* Guest pfn is invalid */
#define INVALID_MFN (~0UL)
#define MEM_G (1UL << 30)
#define MEM_M (1UL << 20)
#define MMIO_START (3 * MEM_G)
#define MMIO_SIZE (512 * MEM_M)
#define VGA_IO_START 0xA0000UL
#define VGA_IO_SIZE 0x20000
#define LEGACY_IO_START (MMIO_START + MMIO_SIZE)
#define LEGACY_IO_SIZE (64 * MEM_M)
#define IO_SAPIC_START 0xfec00000UL
#define IO_SAPIC_SIZE 0x100000
#define PIB_START 0xfee00000UL
#define PIB_SIZE 0x200000
#define GFW_START (4 * MEM_G - 16 * MEM_M)
#define GFW_SIZE (16 * MEM_M)
/*Deliver mode, defined for ioapic.c*/
#define dest_Fixed IOSAPIC_FIXED
#define dest_LowestPrio IOSAPIC_LOWEST_PRIORITY
#define NMI_VECTOR 2
#define ExtINT_VECTOR 0
#define NULL_VECTOR (-1)
#define IA64_SPURIOUS_INT_VECTOR 0x0f
#define VCPU_LID(v) (((u64)(v)->vcpu_id) << 24)
/*
*Delivery mode
*/
#define SAPIC_DELIV_SHIFT 8
#define SAPIC_FIXED 0x0
#define SAPIC_LOWEST_PRIORITY 0x1
#define SAPIC_PMI 0x2
#define SAPIC_NMI 0x4
#define SAPIC_INIT 0x5
#define SAPIC_EXTINT 0x7
/*
* vcpu->requests bit members for arch
*/
#define KVM_REQ_PTC_G 32
#define KVM_REQ_RESUME 33
#define KVM_HPAGE_GFN_SHIFT(x) 0
#define KVM_NR_PAGE_SIZES 1
#define KVM_PAGES_PER_HPAGE(x) 1
struct kvm;
struct kvm_vcpu;
struct kvm_mmio_req {
uint64_t addr; /* physical address */
uint64_t size; /* size in bytes */
uint64_t data; /* data (or paddr of data) */
uint8_t state:4;
uint8_t dir:1; /* 1=read, 0=write */
};
/*Pal data struct */
struct kvm_pal_call{
/*In area*/
uint64_t gr28;
uint64_t gr29;
uint64_t gr30;
uint64_t gr31;
/*Out area*/
struct ia64_pal_retval ret;
};
/* Sal data structure */
struct kvm_sal_call{
/*In area*/
uint64_t in0;
uint64_t in1;
uint64_t in2;
uint64_t in3;
uint64_t in4;
uint64_t in5;
uint64_t in6;
uint64_t in7;
struct sal_ret_values ret;
};
/*Guest change rr6*/
struct kvm_switch_rr6 {
uint64_t old_rr;
uint64_t new_rr;
};
union ia64_ipi_a{
unsigned long val;
struct {
unsigned long rv : 3;
unsigned long ir : 1;
unsigned long eid : 8;
unsigned long id : 8;
unsigned long ib_base : 44;
};
};
union ia64_ipi_d {
unsigned long val;
struct {
unsigned long vector : 8;
unsigned long dm : 3;
unsigned long ig : 53;
};
};
/*ipi check exit data*/
struct kvm_ipi_data{
union ia64_ipi_a addr;
union ia64_ipi_d data;
};
/*global purge data*/
struct kvm_ptc_g {
unsigned long vaddr;
unsigned long rr;
unsigned long ps;
struct kvm_vcpu *vcpu;
};
/*Exit control data */
struct exit_ctl_data{
uint32_t exit_reason;
uint32_t vm_status;
union {
struct kvm_mmio_req ioreq;
struct kvm_pal_call pal_data;
struct kvm_sal_call sal_data;
struct kvm_switch_rr6 rr_data;
struct kvm_ipi_data ipi_data;
struct kvm_ptc_g ptc_g_data;
} u;
};
union pte_flags {
unsigned long val;
struct {
unsigned long p : 1; /*0 */
unsigned long : 1; /* 1 */
unsigned long ma : 3; /* 2-4 */
unsigned long a : 1; /* 5 */
unsigned long d : 1; /* 6 */
unsigned long pl : 2; /* 7-8 */
unsigned long ar : 3; /* 9-11 */
unsigned long ppn : 38; /* 12-49 */
unsigned long : 2; /* 50-51 */
unsigned long ed : 1; /* 52 */
};
};
union ia64_pta {
unsigned long val;
struct {
unsigned long ve : 1;
unsigned long reserved0 : 1;
unsigned long size : 6;
unsigned long vf : 1;
unsigned long reserved1 : 6;
unsigned long base : 49;
};
};
struct thash_cb {
/* THASH base information */
struct thash_data *hash; /* hash table pointer */
union ia64_pta pta;
int num;
};
struct kvm_vcpu_stat {
};
struct kvm_vcpu_arch {
int launched;
int last_exit;
int last_run_cpu;
int vmm_tr_slot;
int vm_tr_slot;
int sn_rtc_tr_slot;
#define KVM_MP_STATE_RUNNABLE 0
#define KVM_MP_STATE_UNINITIALIZED 1
#define KVM_MP_STATE_INIT_RECEIVED 2
#define KVM_MP_STATE_HALTED 3
int mp_state;
#define MAX_PTC_G_NUM 3
int ptc_g_count;
struct kvm_ptc_g ptc_g_data[MAX_PTC_G_NUM];
/*halt timer to wake up sleepy vcpus*/
struct hrtimer hlt_timer;
long ht_active;
struct kvm_lapic *apic; /* kernel irqchip context */
struct vpd *vpd;
/* Exit data for vmm_transition*/
struct exit_ctl_data exit_data;
cpumask_t cache_coherent_map;
unsigned long vmm_rr;
unsigned long host_rr6;
unsigned long psbits[8];
unsigned long cr_iipa;
unsigned long cr_isr;
unsigned long vsa_base;
unsigned long dirty_log_lock_pa;
unsigned long __gp;
/* TR and TC. */
struct thash_data itrs[NITRS];
struct thash_data dtrs[NDTRS];
/* Bit is set if there is a tr/tc for the region. */
unsigned char itr_regions;
unsigned char dtr_regions;
unsigned char tc_regions;
/* purge all */
unsigned long ptce_base;
unsigned long ptce_count[2];
unsigned long ptce_stride[2];
/* itc/itm */
unsigned long last_itc;
long itc_offset;
unsigned long itc_check;
unsigned long timer_check;
unsigned int timer_pending;
unsigned int timer_fired;
unsigned long vrr[8];
unsigned long ibr[8];
unsigned long dbr[8];
unsigned long insvc[4]; /* Interrupt in service. */
unsigned long xtp;
unsigned long metaphysical_rr0; /* from kvm_arch (so is pinned) */
unsigned long metaphysical_rr4; /* from kvm_arch (so is pinned) */
unsigned long metaphysical_saved_rr0; /* from kvm_arch */
unsigned long metaphysical_saved_rr4; /* from kvm_arch */
unsigned long fp_psr; /*used for lazy float register */
unsigned long saved_gp;
/*for phycial emulation */
int mode_flags;
struct thash_cb vtlb;
struct thash_cb vhpt;
char irq_check;
char irq_new_pending;
unsigned long opcode;
unsigned long cause;
char log_buf[VMM_LOG_LEN];
union context host;
union context guest;
};
struct kvm_vm_stat {
u64 remote_tlb_flush;
};
struct kvm_sal_data {
unsigned long boot_ip;
unsigned long boot_gp;
};
struct kvm_arch {
spinlock_t dirty_log_lock;
unsigned long vm_base;
unsigned long metaphysical_rr0;
unsigned long metaphysical_rr4;
unsigned long vmm_init_rr;
int is_sn2;
struct kvm_ioapic *vioapic;
struct kvm_vm_stat stat;
struct kvm_sal_data rdv_sal_data;
struct list_head assigned_dev_head;
struct iommu_domain *iommu_domain;
int iommu_flags;
unsigned long irq_sources_bitmap;
unsigned long irq_states[KVM_IOAPIC_NUM_PINS];
};
union cpuid3_t {
u64 value;
struct {
u64 number : 8;
u64 revision : 8;
u64 model : 8;
u64 family : 8;
u64 archrev : 8;
u64 rv : 24;
};
};
struct kvm_pt_regs {
/* The following registers are saved by SAVE_MIN: */
unsigned long b6; /* scratch */
unsigned long b7; /* scratch */
unsigned long ar_csd; /* used by cmp8xchg16 (scratch) */
unsigned long ar_ssd; /* reserved for future use (scratch) */
unsigned long r8; /* scratch (return value register 0) */
unsigned long r9; /* scratch (return value register 1) */
unsigned long r10; /* scratch (return value register 2) */
unsigned long r11; /* scratch (return value register 3) */
unsigned long cr_ipsr; /* interrupted task's psr */
unsigned long cr_iip; /* interrupted task's instruction pointer */
unsigned long cr_ifs; /* interrupted task's function state */
unsigned long ar_unat; /* interrupted task's NaT register (preserved) */
unsigned long ar_pfs; /* prev function state */
unsigned long ar_rsc; /* RSE configuration */
/* The following two are valid only if cr_ipsr.cpl > 0: */
unsigned long ar_rnat; /* RSE NaT */
unsigned long ar_bspstore; /* RSE bspstore */
unsigned long pr; /* 64 predicate registers (1 bit each) */
unsigned long b0; /* return pointer (bp) */
unsigned long loadrs; /* size of dirty partition << 16 */
unsigned long r1; /* the gp pointer */
unsigned long r12; /* interrupted task's memory stack pointer */
unsigned long r13; /* thread pointer */
unsigned long ar_fpsr; /* floating point status (preserved) */
unsigned long r15; /* scratch */
/* The remaining registers are NOT saved for system calls. */
unsigned long r14; /* scratch */
unsigned long r2; /* scratch */
unsigned long r3; /* scratch */
unsigned long r16; /* scratch */
unsigned long r17; /* scratch */
unsigned long r18; /* scratch */
unsigned long r19; /* scratch */
unsigned long r20; /* scratch */
unsigned long r21; /* scratch */
unsigned long r22; /* scratch */
unsigned long r23; /* scratch */
unsigned long r24; /* scratch */
unsigned long r25; /* scratch */
unsigned long r26; /* scratch */
unsigned long r27; /* scratch */
unsigned long r28; /* scratch */
unsigned long r29; /* scratch */
unsigned long r30; /* scratch */
unsigned long r31; /* scratch */
unsigned long ar_ccv; /* compare/exchange value (scratch) */
/*
* Floating point registers that the kernel considers scratch:
*/
struct ia64_fpreg f6; /* scratch */
struct ia64_fpreg f7; /* scratch */
struct ia64_fpreg f8; /* scratch */
struct ia64_fpreg f9; /* scratch */
struct ia64_fpreg f10; /* scratch */
struct ia64_fpreg f11; /* scratch */
unsigned long r4; /* preserved */
unsigned long r5; /* preserved */
unsigned long r6; /* preserved */
unsigned long r7; /* preserved */
unsigned long eml_unat; /* used for emulating instruction */
unsigned long pad0; /* alignment pad */
};
static inline struct kvm_pt_regs *vcpu_regs(struct kvm_vcpu *v)
{
return (struct kvm_pt_regs *) ((unsigned long) v + KVM_STK_OFFSET) - 1;
}
typedef int kvm_vmm_entry(void);
typedef void kvm_tramp_entry(union context *host, union context *guest);
struct kvm_vmm_info{
struct module *module;
kvm_vmm_entry *vmm_entry;
kvm_tramp_entry *tramp_entry;
unsigned long vmm_ivt;
unsigned long patch_mov_ar;
unsigned long patch_mov_ar_sn2;
};
int kvm_highest_pending_irq(struct kvm_vcpu *vcpu);
int kvm_emulate_halt(struct kvm_vcpu *vcpu);
int kvm_pal_emul(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
void kvm_sal_emul(struct kvm_vcpu *vcpu);
#define __KVM_HAVE_ARCH_VM_ALLOC 1
struct kvm *kvm_arch_alloc_vm(void);
void kvm_arch_free_vm(struct kvm *kvm);
#endif /* __ASSEMBLY__*/
#endif
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