5b0d2cc280
We currently have some code to clear the list registers on GICv3, but we never call this code, because the caller got nuked when removing the old vgic. We also used to have a similar GICv2 part, but that got lost in the process too. Let's reintroduce the logic for GICv2 and call the logic when we initialize the use of hypervisors on the CPU, for example when first loading KVM or when exiting a low power state. Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
181 lines
6.7 KiB
C
181 lines
6.7 KiB
C
/*
|
|
* Copyright (C) 2015, 2016 ARM Ltd.
|
|
*
|
|
* 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_ARM_VGIC_NEW_H__
|
|
#define __KVM_ARM_VGIC_NEW_H__
|
|
|
|
#include <linux/irqchip/arm-gic-common.h>
|
|
|
|
#define PRODUCT_ID_KVM 0x4b /* ASCII code K */
|
|
#define IMPLEMENTER_ARM 0x43b
|
|
|
|
#define VGIC_ADDR_UNDEF (-1)
|
|
#define IS_VGIC_ADDR_UNDEF(_x) ((_x) == VGIC_ADDR_UNDEF)
|
|
|
|
#define INTERRUPT_ID_BITS_SPIS 10
|
|
#define INTERRUPT_ID_BITS_ITS 16
|
|
#define VGIC_PRI_BITS 5
|
|
|
|
#define vgic_irq_is_sgi(intid) ((intid) < VGIC_NR_SGIS)
|
|
|
|
#define VGIC_AFFINITY_0_SHIFT 0
|
|
#define VGIC_AFFINITY_0_MASK (0xffUL << VGIC_AFFINITY_0_SHIFT)
|
|
#define VGIC_AFFINITY_1_SHIFT 8
|
|
#define VGIC_AFFINITY_1_MASK (0xffUL << VGIC_AFFINITY_1_SHIFT)
|
|
#define VGIC_AFFINITY_2_SHIFT 16
|
|
#define VGIC_AFFINITY_2_MASK (0xffUL << VGIC_AFFINITY_2_SHIFT)
|
|
#define VGIC_AFFINITY_3_SHIFT 24
|
|
#define VGIC_AFFINITY_3_MASK (0xffUL << VGIC_AFFINITY_3_SHIFT)
|
|
|
|
#define VGIC_AFFINITY_LEVEL(reg, level) \
|
|
((((reg) & VGIC_AFFINITY_## level ##_MASK) \
|
|
>> VGIC_AFFINITY_## level ##_SHIFT) << MPIDR_LEVEL_SHIFT(level))
|
|
|
|
/*
|
|
* The Userspace encodes the affinity differently from the MPIDR,
|
|
* Below macro converts vgic userspace format to MPIDR reg format.
|
|
*/
|
|
#define VGIC_TO_MPIDR(val) (VGIC_AFFINITY_LEVEL(val, 0) | \
|
|
VGIC_AFFINITY_LEVEL(val, 1) | \
|
|
VGIC_AFFINITY_LEVEL(val, 2) | \
|
|
VGIC_AFFINITY_LEVEL(val, 3))
|
|
|
|
/*
|
|
* As per Documentation/virtual/kvm/devices/arm-vgic-v3.txt,
|
|
* below macros are defined for CPUREG encoding.
|
|
*/
|
|
#define KVM_REG_ARM_VGIC_SYSREG_OP0_MASK 0x000000000000c000
|
|
#define KVM_REG_ARM_VGIC_SYSREG_OP0_SHIFT 14
|
|
#define KVM_REG_ARM_VGIC_SYSREG_OP1_MASK 0x0000000000003800
|
|
#define KVM_REG_ARM_VGIC_SYSREG_OP1_SHIFT 11
|
|
#define KVM_REG_ARM_VGIC_SYSREG_CRN_MASK 0x0000000000000780
|
|
#define KVM_REG_ARM_VGIC_SYSREG_CRN_SHIFT 7
|
|
#define KVM_REG_ARM_VGIC_SYSREG_CRM_MASK 0x0000000000000078
|
|
#define KVM_REG_ARM_VGIC_SYSREG_CRM_SHIFT 3
|
|
#define KVM_REG_ARM_VGIC_SYSREG_OP2_MASK 0x0000000000000007
|
|
#define KVM_REG_ARM_VGIC_SYSREG_OP2_SHIFT 0
|
|
|
|
#define KVM_DEV_ARM_VGIC_SYSREG_MASK (KVM_REG_ARM_VGIC_SYSREG_OP0_MASK | \
|
|
KVM_REG_ARM_VGIC_SYSREG_OP1_MASK | \
|
|
KVM_REG_ARM_VGIC_SYSREG_CRN_MASK | \
|
|
KVM_REG_ARM_VGIC_SYSREG_CRM_MASK | \
|
|
KVM_REG_ARM_VGIC_SYSREG_OP2_MASK)
|
|
|
|
static inline bool irq_is_pending(struct vgic_irq *irq)
|
|
{
|
|
if (irq->config == VGIC_CONFIG_EDGE)
|
|
return irq->pending_latch;
|
|
else
|
|
return irq->pending_latch || irq->line_level;
|
|
}
|
|
|
|
struct vgic_vmcr {
|
|
u32 ctlr;
|
|
u32 abpr;
|
|
u32 bpr;
|
|
u32 pmr;
|
|
/* Below member variable are valid only for GICv3 */
|
|
u32 grpen0;
|
|
u32 grpen1;
|
|
};
|
|
|
|
struct vgic_reg_attr {
|
|
struct kvm_vcpu *vcpu;
|
|
gpa_t addr;
|
|
};
|
|
|
|
int vgic_v3_parse_attr(struct kvm_device *dev, struct kvm_device_attr *attr,
|
|
struct vgic_reg_attr *reg_attr);
|
|
int vgic_v2_parse_attr(struct kvm_device *dev, struct kvm_device_attr *attr,
|
|
struct vgic_reg_attr *reg_attr);
|
|
const struct vgic_register_region *
|
|
vgic_get_mmio_region(struct kvm_vcpu *vcpu, struct vgic_io_device *iodev,
|
|
gpa_t addr, int len);
|
|
struct vgic_irq *vgic_get_irq(struct kvm *kvm, struct kvm_vcpu *vcpu,
|
|
u32 intid);
|
|
void vgic_put_irq(struct kvm *kvm, struct vgic_irq *irq);
|
|
bool vgic_queue_irq_unlock(struct kvm *kvm, struct vgic_irq *irq);
|
|
void vgic_kick_vcpus(struct kvm *kvm);
|
|
|
|
int vgic_check_ioaddr(struct kvm *kvm, phys_addr_t *ioaddr,
|
|
phys_addr_t addr, phys_addr_t alignment);
|
|
|
|
void vgic_v2_process_maintenance(struct kvm_vcpu *vcpu);
|
|
void vgic_v2_fold_lr_state(struct kvm_vcpu *vcpu);
|
|
void vgic_v2_populate_lr(struct kvm_vcpu *vcpu, struct vgic_irq *irq, int lr);
|
|
void vgic_v2_clear_lr(struct kvm_vcpu *vcpu, int lr);
|
|
void vgic_v2_set_underflow(struct kvm_vcpu *vcpu);
|
|
int vgic_v2_has_attr_regs(struct kvm_device *dev, struct kvm_device_attr *attr);
|
|
int vgic_v2_dist_uaccess(struct kvm_vcpu *vcpu, bool is_write,
|
|
int offset, u32 *val);
|
|
int vgic_v2_cpuif_uaccess(struct kvm_vcpu *vcpu, bool is_write,
|
|
int offset, u32 *val);
|
|
void vgic_v2_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
|
|
void vgic_v2_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
|
|
void vgic_v2_enable(struct kvm_vcpu *vcpu);
|
|
int vgic_v2_probe(const struct gic_kvm_info *info);
|
|
int vgic_v2_map_resources(struct kvm *kvm);
|
|
int vgic_register_dist_iodev(struct kvm *kvm, gpa_t dist_base_address,
|
|
enum vgic_type);
|
|
|
|
void vgic_v2_init_lrs(void);
|
|
|
|
static inline void vgic_get_irq_kref(struct vgic_irq *irq)
|
|
{
|
|
if (irq->intid < VGIC_MIN_LPI)
|
|
return;
|
|
|
|
kref_get(&irq->refcount);
|
|
}
|
|
|
|
void vgic_v3_process_maintenance(struct kvm_vcpu *vcpu);
|
|
void vgic_v3_fold_lr_state(struct kvm_vcpu *vcpu);
|
|
void vgic_v3_populate_lr(struct kvm_vcpu *vcpu, struct vgic_irq *irq, int lr);
|
|
void vgic_v3_clear_lr(struct kvm_vcpu *vcpu, int lr);
|
|
void vgic_v3_set_underflow(struct kvm_vcpu *vcpu);
|
|
void vgic_v3_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
|
|
void vgic_v3_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
|
|
void vgic_v3_enable(struct kvm_vcpu *vcpu);
|
|
int vgic_v3_probe(const struct gic_kvm_info *info);
|
|
int vgic_v3_map_resources(struct kvm *kvm);
|
|
int vgic_register_redist_iodevs(struct kvm *kvm, gpa_t dist_base_address);
|
|
|
|
int vgic_register_its_iodevs(struct kvm *kvm);
|
|
bool vgic_has_its(struct kvm *kvm);
|
|
int kvm_vgic_register_its_device(void);
|
|
void vgic_enable_lpis(struct kvm_vcpu *vcpu);
|
|
int vgic_its_inject_msi(struct kvm *kvm, struct kvm_msi *msi);
|
|
int vgic_v3_has_attr_regs(struct kvm_device *dev, struct kvm_device_attr *attr);
|
|
int vgic_v3_dist_uaccess(struct kvm_vcpu *vcpu, bool is_write,
|
|
int offset, u32 *val);
|
|
int vgic_v3_redist_uaccess(struct kvm_vcpu *vcpu, bool is_write,
|
|
int offset, u32 *val);
|
|
int vgic_v3_cpu_sysregs_uaccess(struct kvm_vcpu *vcpu, bool is_write,
|
|
u64 id, u64 *val);
|
|
int vgic_v3_has_cpu_sysregs_attr(struct kvm_vcpu *vcpu, bool is_write, u64 id,
|
|
u64 *reg);
|
|
int vgic_v3_line_level_info_uaccess(struct kvm_vcpu *vcpu, bool is_write,
|
|
u32 intid, u64 *val);
|
|
int kvm_register_vgic_device(unsigned long type);
|
|
void vgic_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
|
|
void vgic_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
|
|
int vgic_lazy_init(struct kvm *kvm);
|
|
int vgic_init(struct kvm *kvm);
|
|
|
|
int vgic_debug_init(struct kvm *kvm);
|
|
int vgic_debug_destroy(struct kvm *kvm);
|
|
|
|
#endif
|