Andre Przywara | 8321581 | 2014-06-07 00:53:08 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012-2014 ARM Ltd. |
| 3 | * Author: Marc Zyngier <marc.zyngier@arm.com> |
| 4 | * |
| 5 | * Derived from virt/kvm/arm/vgic.c |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 18 | */ |
| 19 | |
| 20 | #ifndef __KVM_VGIC_H__ |
| 21 | #define __KVM_VGIC_H__ |
| 22 | |
| 23 | #define VGIC_ADDR_UNDEF (-1) |
| 24 | #define IS_VGIC_ADDR_UNDEF(_x) ((_x) == VGIC_ADDR_UNDEF) |
| 25 | |
| 26 | #define PRODUCT_ID_KVM 0x4b /* ASCII code K */ |
| 27 | #define IMPLEMENTER_ARM 0x43b |
| 28 | |
| 29 | #define ACCESS_READ_VALUE (1 << 0) |
| 30 | #define ACCESS_READ_RAZ (0 << 0) |
| 31 | #define ACCESS_READ_MASK(x) ((x) & (1 << 0)) |
| 32 | #define ACCESS_WRITE_IGNORED (0 << 1) |
| 33 | #define ACCESS_WRITE_SETBIT (1 << 1) |
| 34 | #define ACCESS_WRITE_CLEARBIT (2 << 1) |
| 35 | #define ACCESS_WRITE_VALUE (3 << 1) |
| 36 | #define ACCESS_WRITE_MASK(x) ((x) & (3 << 1)) |
| 37 | |
Andre Przywara | a0675c2 | 2014-06-07 00:54:51 +0200 | [diff] [blame] | 38 | #define VCPU_NOT_ALLOCATED ((u8)-1) |
| 39 | |
Andre Przywara | 8321581 | 2014-06-07 00:53:08 +0200 | [diff] [blame] | 40 | unsigned long *vgic_bitmap_get_shared_map(struct vgic_bitmap *x); |
| 41 | |
| 42 | void vgic_update_state(struct kvm *kvm); |
| 43 | int vgic_init_common_maps(struct kvm *kvm); |
| 44 | |
| 45 | u32 *vgic_bitmap_get_reg(struct vgic_bitmap *x, int cpuid, u32 offset); |
| 46 | u32 *vgic_bytemap_get_reg(struct vgic_bytemap *x, int cpuid, u32 offset); |
| 47 | |
| 48 | void vgic_dist_irq_set_pending(struct kvm_vcpu *vcpu, int irq); |
| 49 | void vgic_dist_irq_clear_pending(struct kvm_vcpu *vcpu, int irq); |
| 50 | void vgic_cpu_irq_clear(struct kvm_vcpu *vcpu, int irq); |
| 51 | void vgic_bitmap_set_irq_val(struct vgic_bitmap *x, int cpuid, |
| 52 | int irq, int val); |
| 53 | |
| 54 | void vgic_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr); |
| 55 | void vgic_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr); |
| 56 | |
| 57 | bool vgic_queue_irq(struct kvm_vcpu *vcpu, u8 sgi_source_id, int irq); |
| 58 | void vgic_unqueue_irqs(struct kvm_vcpu *vcpu); |
| 59 | |
| 60 | void vgic_reg_access(struct kvm_exit_mmio *mmio, u32 *reg, |
| 61 | phys_addr_t offset, int mode); |
| 62 | bool handle_mmio_raz_wi(struct kvm_vcpu *vcpu, struct kvm_exit_mmio *mmio, |
| 63 | phys_addr_t offset); |
| 64 | |
| 65 | static inline |
| 66 | u32 mmio_data_read(struct kvm_exit_mmio *mmio, u32 mask) |
| 67 | { |
| 68 | return le32_to_cpu(*((u32 *)mmio->data)) & mask; |
| 69 | } |
| 70 | |
| 71 | static inline |
| 72 | void mmio_data_write(struct kvm_exit_mmio *mmio, u32 mask, u32 value) |
| 73 | { |
| 74 | *((u32 *)mmio->data) = cpu_to_le32(value) & mask; |
| 75 | } |
| 76 | |
Andre Przywara | cf50a1e | 2015-03-26 14:39:32 +0000 | [diff] [blame] | 77 | struct vgic_io_range { |
Andre Przywara | 8321581 | 2014-06-07 00:53:08 +0200 | [diff] [blame] | 78 | phys_addr_t base; |
| 79 | unsigned long len; |
| 80 | int bits_per_irq; |
| 81 | bool (*handle_mmio)(struct kvm_vcpu *vcpu, struct kvm_exit_mmio *mmio, |
| 82 | phys_addr_t offset); |
| 83 | }; |
| 84 | |
| 85 | static inline bool is_in_range(phys_addr_t addr, unsigned long len, |
| 86 | phys_addr_t baseaddr, unsigned long size) |
| 87 | { |
| 88 | return (addr >= baseaddr) && (addr + len <= baseaddr + size); |
| 89 | } |
| 90 | |
| 91 | const |
Andre Przywara | cf50a1e | 2015-03-26 14:39:32 +0000 | [diff] [blame] | 92 | struct vgic_io_range *vgic_find_range(const struct vgic_io_range *ranges, |
Andre Przywara | 9f199d0 | 2015-03-26 14:39:33 +0000 | [diff] [blame^] | 93 | int len, gpa_t offset); |
Andre Przywara | 8321581 | 2014-06-07 00:53:08 +0200 | [diff] [blame] | 94 | |
| 95 | bool vgic_handle_mmio_range(struct kvm_vcpu *vcpu, struct kvm_run *run, |
| 96 | struct kvm_exit_mmio *mmio, |
Andre Przywara | cf50a1e | 2015-03-26 14:39:32 +0000 | [diff] [blame] | 97 | const struct vgic_io_range *ranges, |
Andre Przywara | 8321581 | 2014-06-07 00:53:08 +0200 | [diff] [blame] | 98 | unsigned long mmio_base); |
| 99 | |
| 100 | bool vgic_handle_enable_reg(struct kvm *kvm, struct kvm_exit_mmio *mmio, |
| 101 | phys_addr_t offset, int vcpu_id, int access); |
| 102 | |
| 103 | bool vgic_handle_set_pending_reg(struct kvm *kvm, struct kvm_exit_mmio *mmio, |
| 104 | phys_addr_t offset, int vcpu_id); |
| 105 | |
| 106 | bool vgic_handle_clear_pending_reg(struct kvm *kvm, struct kvm_exit_mmio *mmio, |
| 107 | phys_addr_t offset, int vcpu_id); |
| 108 | |
Christoffer Dall | 47a98b1 | 2015-03-13 17:02:54 +0000 | [diff] [blame] | 109 | bool vgic_handle_set_active_reg(struct kvm *kvm, |
| 110 | struct kvm_exit_mmio *mmio, |
| 111 | phys_addr_t offset, int vcpu_id); |
| 112 | |
| 113 | bool vgic_handle_clear_active_reg(struct kvm *kvm, |
| 114 | struct kvm_exit_mmio *mmio, |
| 115 | phys_addr_t offset, int vcpu_id); |
| 116 | |
Andre Przywara | 8321581 | 2014-06-07 00:53:08 +0200 | [diff] [blame] | 117 | bool vgic_handle_cfg_reg(u32 *reg, struct kvm_exit_mmio *mmio, |
| 118 | phys_addr_t offset); |
| 119 | |
| 120 | void vgic_kick_vcpus(struct kvm *kvm); |
| 121 | |
Andre Przywara | cf50a1e | 2015-03-26 14:39:32 +0000 | [diff] [blame] | 122 | int vgic_has_attr_regs(const struct vgic_io_range *ranges, phys_addr_t offset); |
Andre Przywara | 8321581 | 2014-06-07 00:53:08 +0200 | [diff] [blame] | 123 | int vgic_set_common_attr(struct kvm_device *dev, struct kvm_device_attr *attr); |
| 124 | int vgic_get_common_attr(struct kvm_device *dev, struct kvm_device_attr *attr); |
| 125 | |
| 126 | int vgic_init(struct kvm *kvm); |
| 127 | void vgic_v2_init_emulation(struct kvm *kvm); |
Andre Przywara | a0675c2 | 2014-06-07 00:54:51 +0200 | [diff] [blame] | 128 | void vgic_v3_init_emulation(struct kvm *kvm); |
Andre Przywara | 8321581 | 2014-06-07 00:53:08 +0200 | [diff] [blame] | 129 | |
| 130 | #endif |