virt/kvm/arm/vgic/vgic.h

   1 /*
   2  * Copyright (C) 2015, 2016 ARM Ltd.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15  */
  16 #ifndef __KVM_ARM_VGIC_NEW_H__
  17 #define __KVM_ARM_VGIC_NEW_H__
  18
  19 #define PRODUCT_ID_KVM          0x4b    /* ASCII code K */
  20 #define IMPLEMENTER_ARM         0x43b
  21
  22 #define VGIC_ADDR_UNDEF         (-1)
  23 #define IS_VGIC_ADDR_UNDEF(_x)  ((_x) == VGIC_ADDR_UNDEF)
  24
  25 #define INTERRUPT_ID_BITS_SPIS  10
  26 #define VGIC_PRI_BITS           5
  27
  28 #define vgic_irq_is_sgi(intid) ((intid) < VGIC_NR_SGIS)
  29
  30 struct vgic_vmcr {
  31         u32     ctlr;
  32         u32     abpr;
  33         u32     bpr;
  34         u32     pmr;
  35 };
  36
  37 struct vgic_irq *vgic_get_irq(struct kvm *kvm, struct kvm_vcpu *vcpu,
  38                               u32 intid);
  39 bool vgic_queue_irq_unlock(struct kvm *kvm, struct vgic_irq *irq);
  40 void vgic_kick_vcpus(struct kvm *kvm);
  41
  42 void vgic_v2_process_maintenance(struct kvm_vcpu *vcpu);
  43 void vgic_v2_fold_lr_state(struct kvm_vcpu *vcpu);
  44 void vgic_v2_populate_lr(struct kvm_vcpu *vcpu, struct vgic_irq *irq, int lr);
  45 void vgic_v2_clear_lr(struct kvm_vcpu *vcpu, int lr);
  46 void vgic_v2_set_underflow(struct kvm_vcpu *vcpu);
  47 int vgic_v2_has_attr_regs(struct kvm_device *dev, struct kvm_device_attr *attr);
  48 int vgic_v2_dist_uaccess(struct kvm_vcpu *vcpu, bool is_write,
  49                          int offset, u32 *val);
  50 void vgic_v2_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
  51 void vgic_v2_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
  52 int vgic_register_dist_iodev(struct kvm *kvm, gpa_t dist_base_address,
  53                              enum vgic_type);
  54
  55 #ifdef CONFIG_KVM_ARM_VGIC_V3
  56 void vgic_v3_process_maintenance(struct kvm_vcpu *vcpu);
  57 void vgic_v3_fold_lr_state(struct kvm_vcpu *vcpu);
  58 void vgic_v3_populate_lr(struct kvm_vcpu *vcpu, struct vgic_irq *irq, int lr);
  59 void vgic_v3_clear_lr(struct kvm_vcpu *vcpu, int lr);
  60 void vgic_v3_set_underflow(struct kvm_vcpu *vcpu);
  61 void vgic_v3_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
  62 void vgic_v3_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr);
  63 int vgic_register_redist_iodevs(struct kvm *kvm, gpa_t dist_base_address);
  64 #else
  65 static inline void vgic_v3_process_maintenance(struct kvm_vcpu *vcpu)
  66 {
  67 }
  68
  69 static inline void vgic_v3_fold_lr_state(struct kvm_vcpu *vcpu)
  70 {
  71 }
  72
  73 static inline void vgic_v3_populate_lr(struct kvm_vcpu *vcpu,
  74                                        struct vgic_irq *irq, int lr)
  75 {
  76 }
  77
  78 static inline void vgic_v3_clear_lr(struct kvm_vcpu *vcpu, int lr)
  79 {
  80 }
  81
  82 static inline void vgic_v3_set_underflow(struct kvm_vcpu *vcpu)
  83 {
  84 }
  85
  86 static inline
  87 void vgic_v3_set_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr)
  88 {
  89 }
  90
  91 static inline
  92 void vgic_v3_get_vmcr(struct kvm_vcpu *vcpu, struct vgic_vmcr *vmcr)
  93 {
  94 }
  95
  96 static inline int vgic_register_redist_iodevs(struct kvm *kvm,
  97                                               gpa_t dist_base_address)
  98 {
  99         return -ENODEV;
 100 }
 101 #endif
 102
 103 void kvm_register_vgic_device(unsigned long type);
 104
 105 #endif