diff options
Diffstat (limited to 'include/kvm/arm_vgic.h')
-rw-r--r-- | include/kvm/arm_vgic.h | 76 |
1 files changed, 58 insertions, 18 deletions
diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h index f074539c6ac5..fd1b8f252da1 100644 --- a/include/kvm/arm_vgic.h +++ b/include/kvm/arm_vgic.h @@ -54,19 +54,33 @@ * - a bunch of shared interrupts (SPI) */ struct vgic_bitmap { - union { - u32 reg[VGIC_NR_PRIVATE_IRQS / 32]; - DECLARE_BITMAP(reg_ul, VGIC_NR_PRIVATE_IRQS); - } percpu[VGIC_MAX_CPUS]; - union { - u32 reg[VGIC_NR_SHARED_IRQS / 32]; - DECLARE_BITMAP(reg_ul, VGIC_NR_SHARED_IRQS); - } shared; + /* + * - One UL per VCPU for private interrupts (assumes UL is at + * least 32 bits) + * - As many UL as necessary for shared interrupts. + * + * The private interrupts are accessed via the "private" + * field, one UL per vcpu (the state for vcpu n is in + * private[n]). The shared interrupts are accessed via the + * "shared" pointer (IRQn state is at bit n-32 in the bitmap). + */ + unsigned long *private; + unsigned long *shared; }; struct vgic_bytemap { - u32 percpu[VGIC_MAX_CPUS][VGIC_NR_PRIVATE_IRQS / 4]; - u32 shared[VGIC_NR_SHARED_IRQS / 4]; + /* + * - 8 u32 per VCPU for private interrupts + * - As many u32 as necessary for shared interrupts. + * + * The private interrupts are accessed via the "private" + * field, (the state for vcpu n is in private[n*8] to + * private[n*8 + 7]). The shared interrupts are accessed via + * the "shared" pointer (IRQn state is at byte (n-32)%4 of the + * shared[(n-32)/4] word). + */ + u32 *private; + u32 *shared; }; struct kvm_vcpu; @@ -127,6 +141,9 @@ struct vgic_dist { bool in_kernel; bool ready; + int nr_cpus; + int nr_irqs; + /* Virtual control interface mapping */ void __iomem *vctrl_base; @@ -166,15 +183,36 @@ struct vgic_dist { /* Level/edge triggered */ struct vgic_bitmap irq_cfg; - /* Source CPU per SGI and target CPU */ - u8 irq_sgi_sources[VGIC_MAX_CPUS][VGIC_NR_SGIS]; + /* + * Source CPU per SGI and target CPU: + * + * Each byte represent a SGI observable on a VCPU, each bit of + * this byte indicating if the corresponding VCPU has + * generated this interrupt. This is a GICv2 feature only. + * + * For VCPUn (n < 8), irq_sgi_sources[n*16] to [n*16 + 15] are + * the SGIs observable on VCPUn. + */ + u8 *irq_sgi_sources; - /* Target CPU for each IRQ */ - u8 irq_spi_cpu[VGIC_NR_SHARED_IRQS]; - struct vgic_bitmap irq_spi_target[VGIC_MAX_CPUS]; + /* + * Target CPU for each SPI: + * + * Array of available SPI, each byte indicating the target + * VCPU for SPI. IRQn (n >=32) is at irq_spi_cpu[n-32]. + */ + u8 *irq_spi_cpu; + + /* + * Reverse lookup of irq_spi_cpu for faster compute pending: + * + * Array of bitmaps, one per VCPU, describing if IRQn is + * routed to a particular VCPU. + */ + struct vgic_bitmap *irq_spi_target; /* Bitmap indicating which CPU has something pending */ - unsigned long irq_pending_on_cpu; + unsigned long *irq_pending_on_cpu; #endif }; @@ -204,11 +242,11 @@ struct vgic_v3_cpu_if { struct vgic_cpu { #ifdef CONFIG_KVM_ARM_VGIC /* per IRQ to LR mapping */ - u8 vgic_irq_lr_map[VGIC_NR_IRQS]; + u8 *vgic_irq_lr_map; /* Pending interrupts on this VCPU */ DECLARE_BITMAP( pending_percpu, VGIC_NR_PRIVATE_IRQS); - DECLARE_BITMAP( pending_shared, VGIC_NR_SHARED_IRQS); + unsigned long *pending_shared; /* Bitmap of used/free list registers */ DECLARE_BITMAP( lr_used, VGIC_V2_MAX_LRS); @@ -239,7 +277,9 @@ int kvm_vgic_addr(struct kvm *kvm, unsigned long type, u64 *addr, bool write); int kvm_vgic_hyp_init(void); int kvm_vgic_init(struct kvm *kvm); int kvm_vgic_create(struct kvm *kvm); +void kvm_vgic_destroy(struct kvm *kvm); int kvm_vgic_vcpu_init(struct kvm_vcpu *vcpu); +void kvm_vgic_vcpu_destroy(struct kvm_vcpu *vcpu); void kvm_vgic_flush_hwstate(struct kvm_vcpu *vcpu); void kvm_vgic_sync_hwstate(struct kvm_vcpu *vcpu); int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int irq_num, |