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arm/arm64: KVM: add vgic.h header file

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vgic.c is currently a mixture of generic vGIC emulation code and
functions specific to emulating a GICv2. To ease the addition of
GICv3 later, we create new header file vgic.h, which holds constants
and prototypes of commonly used functions.
Rename some identifiers to avoid name space clutter.
I removed the long-standing comment about using the kvm_io_bus API
to tackle the GIC register ranges, as it wouldn't be a win for us
anymore.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>

-------
As the diff isn't always obvious here (and to aid eventual rebases),
here is a list of high-level changes done to the code:
* moved definitions and prototypes from vgic.c to vgic.h:
  - VGIC_ADDR_UNDEF
  - ACCESS_{READ,WRITE}_*
  - vgic_init()
  - vgic_update_state()
  - vgic_kick_vcpus()
  - vgic_get_vmcr()
  - vgic_set_vmcr()
  - struct mmio_range {} (renamed to struct kvm_mmio_range)
* removed static keyword and exported prototype in vgic.h:
  - vgic_bitmap_get_reg()
  - vgic_bitmap_set_irq_val()
  - vgic_bitmap_get_shared_map()
  - vgic_bytemap_get_reg()
  - vgic_dist_irq_set_pending()
  - vgic_dist_irq_clear_pending()
  - vgic_cpu_irq_clear()
  - vgic_reg_access()
  - handle_mmio_raz_wi()
  - vgic_handle_enable_reg()
  - vgic_handle_set_pending_reg()
  - vgic_handle_clear_pending_reg()
  - vgic_handle_cfg_reg()
  - vgic_unqueue_irqs()
  - find_matching_range() (renamed to vgic_find_range)
  - vgic_handle_mmio_range()
  - vgic_update_state()
  - vgic_get_vmcr()
  - vgic_set_vmcr()
  - vgic_queue_irq()
  - vgic_kick_vcpus()
  - vgic_init()
  - vgic_v2_init_emulation()
  - vgic_has_attr_regs()
  - vgic_set_common_attr()
  - vgic_get_common_attr()
  - vgic_destroy()
  - vgic_create()
* moved functions to vgic.h (static inline):
  - mmio_data_read()
  - mmio_data_write()
  - is_in_range()

Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
This commit is contained in:
Andre Przywara 2014-06-07 00:53:08 +02:00 committed by Christoffer Dall
parent b60da146c1
commit 832158125d
2 changed files with 170 additions and 101 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

151
virt/kvm/arm/vgic.c
View File

@ -75,33 +75,16 @@
* inactive as long as the external input line is held high.
*/
#define VGIC_ADDR_UNDEF (-1)
#define IS_VGIC_ADDR_UNDEF(_x) ((_x) == VGIC_ADDR_UNDEF)
#include "vgic.h"
#define PRODUCT_ID_KVM 0x4b /* ASCII code K */
#define IMPLEMENTER_ARM 0x43b
#define GICC_ARCH_VERSION_V2 0x2
#define ACCESS_READ_VALUE (1 << 0)
#define ACCESS_READ_RAZ (0 << 0)
#define ACCESS_READ_MASK(x) ((x) & (1 << 0))
#define ACCESS_WRITE_IGNORED (0 << 1)
#define ACCESS_WRITE_SETBIT (1 << 1)
#define ACCESS_WRITE_CLEARBIT (2 << 1)
#define ACCESS_WRITE_VALUE (3 << 1)
#define ACCESS_WRITE_MASK(x) ((x) & (3 << 1))
static int vgic_init(struct kvm *kvm);
static void vgic_retire_disabled_irqs(struct kvm_vcpu *vcpu);
static void vgic_retire_lr(int lr_nr, int irq, struct kvm_vcpu *vcpu);
static void vgic_update_state(struct kvm *kvm);
static void vgic_kick_vcpus(struct kvm *kvm);
static u8 *vgic_get_sgi_sources(struct vgic_dist *dist, int vcpu_id, int sgi);
static void vgic_dispatch_sgi(struct kvm_vcpu *vcpu, u32 reg);
static struct vgic_lr vgic_get_lr(const struct kvm_vcpu *vcpu, int lr);
static void vgic_set_lr(struct kvm_vcpu *vcpu, int lr, struct vgic_lr lr_desc);
static void vgic_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
static void vgic_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
static const struct vgic_ops *vgic_ops;
static const struct vgic_params *vgic;
@ -175,8 +158,7 @@ static unsigned long *u64_to_bitmask(u64 *val)
return (unsigned long *)val;
}
static u32 *vgic_bitmap_get_reg(struct vgic_bitmap *x,
int cpuid, u32 offset)
u32 *vgic_bitmap_get_reg(struct vgic_bitmap *x, int cpuid, u32 offset)
{
offset >>= 2;
if (!offset)
@ -194,8 +176,8 @@ static int vgic_bitmap_get_irq_val(struct vgic_bitmap *x,
return test_bit(irq - VGIC_NR_PRIVATE_IRQS, x->shared);
}
static void vgic_bitmap_set_irq_val(struct vgic_bitmap *x, int cpuid,
int irq, int val)
void vgic_bitmap_set_irq_val(struct vgic_bitmap *x, int cpuid,
int irq, int val)
{
unsigned long *reg;
@ -217,7 +199,7 @@ static unsigned long *vgic_bitmap_get_cpu_map(struct vgic_bitmap *x, int cpuid)
return x->private + cpuid;
}
static unsigned long *vgic_bitmap_get_shared_map(struct vgic_bitmap *x)
unsigned long *vgic_bitmap_get_shared_map(struct vgic_bitmap *x)
{
return x->shared;
}
@ -244,7 +226,7 @@ static void vgic_free_bytemap(struct vgic_bytemap *b)
b->shared = NULL;
}
static u32 *vgic_bytemap_get_reg(struct vgic_bytemap *x, int cpuid, u32 offset)
u32 *vgic_bytemap_get_reg(struct vgic_bytemap *x, int cpuid, u32 offset)
{
u32 *reg;
@ -341,14 +323,14 @@ static int vgic_dist_irq_is_pending(struct kvm_vcpu *vcpu, int irq)
return vgic_bitmap_get_irq_val(&dist->irq_pending, vcpu->vcpu_id, irq);
}
static void vgic_dist_irq_set_pending(struct kvm_vcpu *vcpu, int irq)
void vgic_dist_irq_set_pending(struct kvm_vcpu *vcpu, int irq)
{
struct vgic_dist *dist = &vcpu->kvm->arch.vgic;
vgic_bitmap_set_irq_val(&dist->irq_pending, vcpu->vcpu_id, irq, 1);
}
static void vgic_dist_irq_clear_pending(struct kvm_vcpu *vcpu, int irq)
void vgic_dist_irq_clear_pending(struct kvm_vcpu *vcpu, int irq)
{
struct vgic_dist *dist = &vcpu->kvm->arch.vgic;
@ -364,7 +346,7 @@ static void vgic_cpu_irq_set(struct kvm_vcpu *vcpu, int irq)
vcpu->arch.vgic_cpu.pending_shared);
}
static void vgic_cpu_irq_clear(struct kvm_vcpu *vcpu, int irq)
void vgic_cpu_irq_clear(struct kvm_vcpu *vcpu, int irq)
{
if (irq < VGIC_NR_PRIVATE_IRQS)
clear_bit(irq, vcpu->arch.vgic_cpu.pending_percpu);
@ -378,16 +360,6 @@ static bool vgic_can_sample_irq(struct kvm_vcpu *vcpu, int irq)
return vgic_irq_is_edge(vcpu, irq) || !vgic_irq_is_queued(vcpu, irq);
}
static u32 mmio_data_read(struct kvm_exit_mmio *mmio, u32 mask)
{
return le32_to_cpu(*((u32 *)mmio->data)) & mask;
}
static void mmio_data_write(struct kvm_exit_mmio *mmio, u32 mask, u32 value)
{
*((u32 *)mmio->data) = cpu_to_le32(value) & mask;
}
/**
* vgic_reg_access - access vgic register
* @mmio: pointer to the data describing the mmio access
@ -399,8 +371,8 @@ static void mmio_data_write(struct kvm_exit_mmio *mmio, u32 mask, u32 value)
* modes defined for vgic register access
* (read,raz,write-ignored,setbit,clearbit,write)
*/
static void vgic_reg_access(struct kvm_exit_mmio *mmio, u32 *reg,
phys_addr_t offset, int mode)
void vgic_reg_access(struct kvm_exit_mmio *mmio, u32 *reg,
phys_addr_t offset, int mode)
{
int word_offset = (offset & 3) * 8;
u32 mask = (1UL << (mmio->len * 8)) - 1;
@ -484,16 +456,16 @@ static bool handle_mmio_misc(struct kvm_vcpu *vcpu,
return false;
}
static bool handle_mmio_raz_wi(struct kvm_vcpu *vcpu,
struct kvm_exit_mmio *mmio, phys_addr_t offset)
bool handle_mmio_raz_wi(struct kvm_vcpu *vcpu, struct kvm_exit_mmio *mmio,
phys_addr_t offset)
{
vgic_reg_access(mmio, NULL, offset,
ACCESS_READ_RAZ | ACCESS_WRITE_IGNORED);
return false;
}
static bool vgic_handle_enable_reg(struct kvm *kvm, struct kvm_exit_mmio *mmio,
phys_addr_t offset, int vcpu_id, int access)
bool vgic_handle_enable_reg(struct kvm *kvm, struct kvm_exit_mmio *mmio,
phys_addr_t offset, int vcpu_id, int access)
{
u32 *reg;
int mode = ACCESS_READ_VALUE | access;
@ -530,9 +502,9 @@ static bool handle_mmio_clear_enable_reg(struct kvm_vcpu *vcpu,
vcpu->vcpu_id, ACCESS_WRITE_CLEARBIT);
}
static bool vgic_handle_set_pending_reg(struct kvm *kvm,
struct kvm_exit_mmio *mmio,
phys_addr_t offset, int vcpu_id)
bool vgic_handle_set_pending_reg(struct kvm *kvm,
struct kvm_exit_mmio *mmio,
phys_addr_t offset, int vcpu_id)
{
u32 *reg, orig;
u32 level_mask;
@ -567,9 +539,9 @@ static bool vgic_handle_set_pending_reg(struct kvm *kvm,
return false;
}
static bool vgic_handle_clear_pending_reg(struct kvm *kvm,
struct kvm_exit_mmio *mmio,
phys_addr_t offset, int vcpu_id)
bool vgic_handle_clear_pending_reg(struct kvm *kvm,
struct kvm_exit_mmio *mmio,
phys_addr_t offset, int vcpu_id)
{
u32 *level_active;
u32 *reg, orig;
@ -741,8 +713,8 @@ static u16 vgic_cfg_compress(u32 val)
* LSB is always 0. As such, we only keep the upper bit, and use the
* two above functions to compress/expand the bits
*/
static bool vgic_handle_cfg_reg(u32 *reg, struct kvm_exit_mmio *mmio,
phys_addr_t offset)
bool vgic_handle_cfg_reg(u32 *reg, struct kvm_exit_mmio *mmio,
phys_addr_t offset)
{
u32 val;
@ -818,7 +790,7 @@ static void vgic_v2_add_sgi_source(struct kvm_vcpu *vcpu, int irq, int source)
* to the distributor but the active state stays in the LRs, because we don't
* track the active state on the distributor side.
*/
static void vgic_unqueue_irqs(struct kvm_vcpu *vcpu)
void vgic_unqueue_irqs(struct kvm_vcpu *vcpu)
{
struct vgic_cpu *vgic_cpu = &vcpu->arch.vgic_cpu;
int i;
@ -943,21 +915,7 @@ static bool handle_mmio_sgi_clear(struct kvm_vcpu *vcpu,
return write_set_clear_sgi_pend_reg(vcpu, mmio, offset, false);
}
/*
* I would have liked to use the kvm_bus_io_*() API instead, but it
* cannot cope with banked registers (only the VM pointer is passed
* around, and we need the vcpu). One of these days, someone please
* fix it!
*/
struct mmio_range {
phys_addr_t base;
unsigned long len;
int bits_per_irq;
bool (*handle_mmio)(struct kvm_vcpu *vcpu, struct kvm_exit_mmio *mmio,
phys_addr_t offset);
};
static const struct mmio_range vgic_dist_ranges[] = {
static const struct kvm_mmio_range vgic_dist_ranges[] = {
{
.base = GIC_DIST_CTRL,
.len = 12,
@ -1042,12 +1000,12 @@ static const struct mmio_range vgic_dist_ranges[] = {
{}
};
static const
struct mmio_range *find_matching_range(const struct mmio_range *ranges,
const
struct kvm_mmio_range *vgic_find_range(const struct kvm_mmio_range *ranges,
struct kvm_exit_mmio *mmio,
phys_addr_t offset)
{
const struct mmio_range *r = ranges;
const struct kvm_mmio_range *r = ranges;
while (r->len) {
if (offset >= r->base &&
@ -1060,7 +1018,7 @@ struct mmio_range *find_matching_range(const struct mmio_range *ranges,
}
static bool vgic_validate_access(const struct vgic_dist *dist,
const struct mmio_range *range,
const struct kvm_mmio_range *range,
unsigned long offset)
{
int irq;
@ -1088,7 +1046,7 @@ static bool vgic_validate_access(const struct vgic_dist *dist,
static bool call_range_handler(struct kvm_vcpu *vcpu,
struct kvm_exit_mmio *mmio,
unsigned long offset,
const struct mmio_range *range)
const struct kvm_mmio_range *range)
{
u32 *data32 = (void *)mmio->data;
struct kvm_exit_mmio mmio32;
@ -1132,18 +1090,18 @@ static bool call_range_handler(struct kvm_vcpu *vcpu,
*
* returns true if the MMIO access could be performed
*/
static bool vgic_handle_mmio_range(struct kvm_vcpu *vcpu, struct kvm_run *run,
bool vgic_handle_mmio_range(struct kvm_vcpu *vcpu, struct kvm_run *run,
struct kvm_exit_mmio *mmio,
const struct mmio_range *ranges,
const struct kvm_mmio_range *ranges,
unsigned long mmio_base)
{
const struct mmio_range *range;
const struct kvm_mmio_range *range;
struct vgic_dist *dist = &vcpu->kvm->arch.vgic;
bool updated_state;
unsigned long offset;
offset = mmio->phys_addr - mmio_base;
range = find_matching_range(ranges, mmio, offset);
range = vgic_find_range(ranges, mmio, offset);
if (unlikely(!range || !range->handle_mmio)) {
pr_warn("Unhandled access %d %08llx %d\n",
mmio->is_write, mmio->phys_addr, mmio->len);
@ -1169,12 +1127,6 @@ static bool vgic_handle_mmio_range(struct kvm_vcpu *vcpu, struct kvm_run *run,
return true;
}
static inline bool is_in_range(phys_addr_t addr, unsigned long len,
phys_addr_t baseaddr, unsigned long size)
{
return (addr >= baseaddr) && (addr + len <= baseaddr + size);
}
static bool vgic_v2_handle_mmio(struct kvm_vcpu *vcpu, struct kvm_run *run,
struct kvm_exit_mmio *mmio)
{
@ -1301,7 +1253,7 @@ static int compute_pending_for_cpu(struct kvm_vcpu *vcpu)
* Update the interrupt state and determine which CPUs have pending
* interrupts. Must be called with distributor lock held.
*/
static void vgic_update_state(struct kvm *kvm)
void vgic_update_state(struct kvm *kvm)
{
struct vgic_dist *dist = &kvm->arch.vgic;
struct kvm_vcpu *vcpu;
@ -1362,12 +1314,12 @@ static inline void vgic_disable_underflow(struct kvm_vcpu *vcpu)
vgic_ops->disable_underflow(vcpu);
}
static inline void vgic_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr)
void vgic_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr)
{
vgic_ops->get_vmcr(vcpu, vmcr);
}
static void vgic_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr)
void vgic_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr)
{
vgic_ops->set_vmcr(vcpu, vmcr);
}
@ -1417,7 +1369,7 @@ static void vgic_retire_disabled_irqs(struct kvm_vcpu *vcpu)
* Queue an interrupt to a CPU virtual interface. Return true on success,
* or false if it wasn't possible to queue it.
*/
static bool vgic_queue_irq(struct kvm_vcpu *vcpu, u8 sgi_source_id, int irq)
bool vgic_queue_irq(struct kvm_vcpu *vcpu, u8 sgi_source_id, int irq)
{
struct vgic_cpu *vgic_cpu = &vcpu->arch.vgic_cpu;
struct vgic_dist *dist = &vcpu->kvm->arch.vgic;
@ -1703,7 +1655,7 @@ int kvm_vgic_vcpu_pending_irq(struct kvm_vcpu *vcpu)
return test_bit(vcpu->vcpu_id, dist->irq_pending_on_cpu);
}
static void vgic_kick_vcpus(struct kvm *kvm)
void vgic_kick_vcpus(struct kvm *kvm)
{
struct kvm_vcpu *vcpu;
int c;
@ -1956,7 +1908,7 @@ static int vgic_v2_init_model(struct kvm *kvm)
* Allocate and initialize the various data structures. Must be called
* with kvm->lock held!
*/
static int vgic_init(struct kvm *kvm)
int vgic_init(struct kvm *kvm)
{
struct vgic_dist *dist = &kvm->arch.vgic;
struct kvm_vcpu *vcpu;
@ -2096,7 +2048,7 @@ out:
return ret;
}
static void vgic_v2_init_emulation(struct kvm *kvm)
void vgic_v2_init_emulation(struct kvm *kvm)
{
struct vgic_dist *dist = &kvm->arch.vgic;
@ -2326,7 +2278,7 @@ static bool handle_cpu_mmio_ident(struct kvm_vcpu *vcpu,
* CPU Interface Register accesses - these are not accessed by the VM, but by
* user space for saving and restoring VGIC state.
*/
static const struct mmio_range vgic_cpu_ranges[] = {
static const struct kvm_mmio_range vgic_cpu_ranges[] = {
{
.base = GIC_CPU_CTRL,
.len = 12,
@ -2353,7 +2305,7 @@ static int vgic_attr_regs_access(struct kvm_device *dev,
struct kvm_device_attr *attr,
u32 *reg, bool is_write)
{
const struct mmio_range *r = NULL, *ranges;
const struct kvm_mmio_range *r = NULL, *ranges;
phys_addr_t offset;
int ret, cpuid, c;
struct kvm_vcpu *vcpu, *tmp_vcpu;
@ -2394,7 +2346,7 @@ static int vgic_attr_regs_access(struct kvm_device *dev,
default:
BUG();
}
r = find_matching_range(ranges, &mmio, offset);
r = vgic_find_range(ranges, &mmio, offset);
if (unlikely(!r || !r->handle_mmio)) {
ret = -ENXIO;
@ -2440,8 +2392,7 @@ out:
return ret;
}
static int vgic_set_common_attr(struct kvm_device *dev,
struct kvm_device_attr *attr)
int vgic_set_common_attr(struct kvm_device *dev, struct kvm_device_attr *attr)
{
int r;
@ -2525,8 +2476,7 @@ static int vgic_set_attr(struct kvm_device *dev, struct kvm_device_attr *attr)
return -ENXIO;
}
static int vgic_get_common_attr(struct kvm_device *dev,
struct kvm_device_attr *attr)
int vgic_get_common_attr(struct kvm_device *dev, struct kvm_device_attr *attr)
{
int r = -ENXIO;
@ -2581,13 +2531,12 @@ static int vgic_get_attr(struct kvm_device *dev, struct kvm_device_attr *attr)
return -ENXIO;
}
static int vgic_has_attr_regs(const struct mmio_range *ranges,
phys_addr_t offset)
int vgic_has_attr_regs(const struct kvm_mmio_range *ranges, phys_addr_t offset)
{
struct kvm_exit_mmio dev_attr_mmio;
dev_attr_mmio.len = 4;
if (find_matching_range(ranges, &dev_attr_mmio, offset))
if (vgic_find_range(ranges, &dev_attr_mmio, offset))
return 0;
else
return -ENXIO;
@ -2622,12 +2571,12 @@ static int vgic_has_attr(struct kvm_device *dev, struct kvm_device_attr *attr)
return -ENXIO;
}
static void vgic_destroy(struct kvm_device *dev)
void vgic_destroy(struct kvm_device *dev)
{
kfree(dev);
}
static int vgic_create(struct kvm_device *dev, u32 type)
int vgic_create(struct kvm_device *dev, u32 type)
{
return kvm_vgic_create(dev->kvm, type);
}

120
virt/kvm/arm/vgic.h Normal file
View File

@ -0,0 +1,120 @@
/*
* Copyright (C) 2012-2014 ARM Ltd.
* Author: Marc Zyngier <marc.zyngier@arm.com>
*
* Derived from virt/kvm/arm/vgic.c
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef __KVM_VGIC_H__
#define __KVM_VGIC_H__
#define VGIC_ADDR_UNDEF (-1)
#define IS_VGIC_ADDR_UNDEF(_x) ((_x) == VGIC_ADDR_UNDEF)
#define PRODUCT_ID_KVM 0x4b /* ASCII code K */
#define IMPLEMENTER_ARM 0x43b
#define ACCESS_READ_VALUE (1 << 0)
#define ACCESS_READ_RAZ (0 << 0)
#define ACCESS_READ_MASK(x) ((x) & (1 << 0))
#define ACCESS_WRITE_IGNORED (0 << 1)
#define ACCESS_WRITE_SETBIT (1 << 1)
#define ACCESS_WRITE_CLEARBIT (2 << 1)
#define ACCESS_WRITE_VALUE (3 << 1)
#define ACCESS_WRITE_MASK(x) ((x) & (3 << 1))
unsigned long *vgic_bitmap_get_shared_map(struct vgic_bitmap *x);
void vgic_update_state(struct kvm *kvm);
int vgic_init_common_maps(struct kvm *kvm);
u32 *vgic_bitmap_get_reg(struct vgic_bitmap *x, int cpuid, u32 offset);
u32 *vgic_bytemap_get_reg(struct vgic_bytemap *x, int cpuid, u32 offset);
void vgic_dist_irq_set_pending(struct kvm_vcpu *vcpu, int irq);
void vgic_dist_irq_clear_pending(struct kvm_vcpu *vcpu, int irq);
void vgic_cpu_irq_clear(struct kvm_vcpu *vcpu, int irq);
void vgic_bitmap_set_irq_val(struct vgic_bitmap *x, int cpuid,
int irq, int val);
void vgic_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
void vgic_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
bool vgic_queue_irq(struct kvm_vcpu *vcpu, u8 sgi_source_id, int irq);
void vgic_unqueue_irqs(struct kvm_vcpu *vcpu);
void vgic_reg_access(struct kvm_exit_mmio *mmio, u32 *reg,
phys_addr_t offset, int mode);
bool handle_mmio_raz_wi(struct kvm_vcpu *vcpu, struct kvm_exit_mmio *mmio,
phys_addr_t offset);
static inline
u32 mmio_data_read(struct kvm_exit_mmio *mmio, u32 mask)
{
return le32_to_cpu(*((u32 *)mmio->data)) & mask;
}
static inline
void mmio_data_write(struct kvm_exit_mmio *mmio, u32 mask, u32 value)
{
*((u32 *)mmio->data) = cpu_to_le32(value) & mask;
}
struct kvm_mmio_range {
phys_addr_t base;
unsigned long len;
int bits_per_irq;
bool (*handle_mmio)(struct kvm_vcpu *vcpu, struct kvm_exit_mmio *mmio,
phys_addr_t offset);
};
static inline bool is_in_range(phys_addr_t addr, unsigned long len,
phys_addr_t baseaddr, unsigned long size)
{
return (addr >= baseaddr) && (addr + len <= baseaddr + size);
}
const
struct kvm_mmio_range *vgic_find_range(const struct kvm_mmio_range *ranges,
struct kvm_exit_mmio *mmio,
phys_addr_t offset);
bool vgic_handle_mmio_range(struct kvm_vcpu *vcpu, struct kvm_run *run,
struct kvm_exit_mmio *mmio,
const struct kvm_mmio_range *ranges,
unsigned long mmio_base);
bool vgic_handle_enable_reg(struct kvm *kvm, struct kvm_exit_mmio *mmio,
phys_addr_t offset, int vcpu_id, int access);
bool vgic_handle_set_pending_reg(struct kvm *kvm, struct kvm_exit_mmio *mmio,
phys_addr_t offset, int vcpu_id);
bool vgic_handle_clear_pending_reg(struct kvm *kvm, struct kvm_exit_mmio *mmio,
phys_addr_t offset, int vcpu_id);
bool vgic_handle_cfg_reg(u32 *reg, struct kvm_exit_mmio *mmio,
phys_addr_t offset);
void vgic_kick_vcpus(struct kvm *kvm);
int vgic_has_attr_regs(const struct kvm_mmio_range *ranges, phys_addr_t offset);
int vgic_set_common_attr(struct kvm_device *dev, struct kvm_device_attr *attr);
int vgic_get_common_attr(struct kvm_device *dev, struct kvm_device_attr *attr);
int vgic_init(struct kvm *kvm);
void vgic_v2_init_emulation(struct kvm *kvm);
#endif