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-rw-r--r--arch/arm/include/asm/kvm_vgic.h220
1 files changed, 0 insertions, 220 deletions
diff --git a/arch/arm/include/asm/kvm_vgic.h b/arch/arm/include/asm/kvm_vgic.h
deleted file mode 100644
index 343744e4809c..000000000000
--- a/arch/arm/include/asm/kvm_vgic.h
+++ /dev/null
@@ -1,220 +0,0 @@
1/*
2 * Copyright (C) 2012 ARM Ltd.
3 * Author: Marc Zyngier <marc.zyngier@arm.com>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 */
18
19#ifndef __ASM_ARM_KVM_VGIC_H
20#define __ASM_ARM_KVM_VGIC_H
21
22#include <linux/kernel.h>
23#include <linux/kvm.h>
24#include <linux/irqreturn.h>
25#include <linux/spinlock.h>
26#include <linux/types.h>
27#include <linux/irqchip/arm-gic.h>
28
29#define VGIC_NR_IRQS 128
30#define VGIC_NR_SGIS 16
31#define VGIC_NR_PPIS 16
32#define VGIC_NR_PRIVATE_IRQS (VGIC_NR_SGIS + VGIC_NR_PPIS)
33#define VGIC_NR_SHARED_IRQS (VGIC_NR_IRQS - VGIC_NR_PRIVATE_IRQS)
34#define VGIC_MAX_CPUS KVM_MAX_VCPUS
35#define VGIC_MAX_LRS (1 << 6)
36
37/* Sanity checks... */
38#if (VGIC_MAX_CPUS > 8)
39#error Invalid number of CPU interfaces
40#endif
41
42#if (VGIC_NR_IRQS & 31)
43#error "VGIC_NR_IRQS must be a multiple of 32"
44#endif
45
46#if (VGIC_NR_IRQS > 1024)
47#error "VGIC_NR_IRQS must be <= 1024"
48#endif
49
50/*
51 * The GIC distributor registers describing interrupts have two parts:
52 * - 32 per-CPU interrupts (SGI + PPI)
53 * - a bunch of shared interrupts (SPI)
54 */
55struct vgic_bitmap {
56 union {
57 u32 reg[VGIC_NR_PRIVATE_IRQS / 32];
58 DECLARE_BITMAP(reg_ul, VGIC_NR_PRIVATE_IRQS);
59 } percpu[VGIC_MAX_CPUS];
60 union {
61 u32 reg[VGIC_NR_SHARED_IRQS / 32];
62 DECLARE_BITMAP(reg_ul, VGIC_NR_SHARED_IRQS);
63 } shared;
64};
65
66struct vgic_bytemap {
67 u32 percpu[VGIC_MAX_CPUS][VGIC_NR_PRIVATE_IRQS / 4];
68 u32 shared[VGIC_NR_SHARED_IRQS / 4];
69};
70
71struct vgic_dist {
72#ifdef CONFIG_KVM_ARM_VGIC
73 spinlock_t lock;
74 bool ready;
75
76 /* Virtual control interface mapping */
77 void __iomem *vctrl_base;
78
79 /* Distributor and vcpu interface mapping in the guest */
80 phys_addr_t vgic_dist_base;
81 phys_addr_t vgic_cpu_base;
82
83 /* Distributor enabled */
84 u32 enabled;
85
86 /* Interrupt enabled (one bit per IRQ) */
87 struct vgic_bitmap irq_enabled;
88
89 /* Interrupt 'pin' level */
90 struct vgic_bitmap irq_state;
91
92 /* Level-triggered interrupt in progress */
93 struct vgic_bitmap irq_active;
94
95 /* Interrupt priority. Not used yet. */
96 struct vgic_bytemap irq_priority;
97
98 /* Level/edge triggered */
99 struct vgic_bitmap irq_cfg;
100
101 /* Source CPU per SGI and target CPU */
102 u8 irq_sgi_sources[VGIC_MAX_CPUS][VGIC_NR_SGIS];
103
104 /* Target CPU for each IRQ */
105 u8 irq_spi_cpu[VGIC_NR_SHARED_IRQS];
106 struct vgic_bitmap irq_spi_target[VGIC_MAX_CPUS];
107
108 /* Bitmap indicating which CPU has something pending */
109 unsigned long irq_pending_on_cpu;
110#endif
111};
112
113struct vgic_cpu {
114#ifdef CONFIG_KVM_ARM_VGIC
115 /* per IRQ to LR mapping */
116 u8 vgic_irq_lr_map[VGIC_NR_IRQS];
117
118 /* Pending interrupts on this VCPU */
119 DECLARE_BITMAP( pending_percpu, VGIC_NR_PRIVATE_IRQS);
120 DECLARE_BITMAP( pending_shared, VGIC_NR_SHARED_IRQS);
121
122 /* Bitmap of used/free list registers */
123 DECLARE_BITMAP( lr_used, VGIC_MAX_LRS);
124
125 /* Number of list registers on this CPU */
126 int nr_lr;
127
128 /* CPU vif control registers for world switch */
129 u32 vgic_hcr;
130 u32 vgic_vmcr;
131 u32 vgic_misr; /* Saved only */
132 u32 vgic_eisr[2]; /* Saved only */
133 u32 vgic_elrsr[2]; /* Saved only */
134 u32 vgic_apr;
135 u32 vgic_lr[VGIC_MAX_LRS];
136#endif
137};
138
139#define LR_EMPTY 0xff
140
141struct kvm;
142struct kvm_vcpu;
143struct kvm_run;
144struct kvm_exit_mmio;
145
146#ifdef CONFIG_KVM_ARM_VGIC
147int kvm_vgic_set_addr(struct kvm *kvm, unsigned long type, u64 addr);
148int kvm_vgic_hyp_init(void);
149int kvm_vgic_init(struct kvm *kvm);
150int kvm_vgic_create(struct kvm *kvm);
151int kvm_vgic_vcpu_init(struct kvm_vcpu *vcpu);
152void kvm_vgic_flush_hwstate(struct kvm_vcpu *vcpu);
153void kvm_vgic_sync_hwstate(struct kvm_vcpu *vcpu);
154int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int irq_num,
155 bool level);
156int kvm_vgic_vcpu_pending_irq(struct kvm_vcpu *vcpu);
157bool vgic_handle_mmio(struct kvm_vcpu *vcpu, struct kvm_run *run,
158 struct kvm_exit_mmio *mmio);
159
160#define irqchip_in_kernel(k) (!!((k)->arch.vgic.vctrl_base))
161#define vgic_initialized(k) ((k)->arch.vgic.ready)
162
163#else
164static inline int kvm_vgic_hyp_init(void)
165{
166 return 0;
167}
168
169static inline int kvm_vgic_set_addr(struct kvm *kvm, unsigned long type, u64 addr)
170{
171 return 0;
172}
173
174static inline int kvm_vgic_init(struct kvm *kvm)
175{
176 return 0;
177}
178
179static inline int kvm_vgic_create(struct kvm *kvm)
180{
181 return 0;
182}
183
184static inline int kvm_vgic_vcpu_init(struct kvm_vcpu *vcpu)
185{
186 return 0;
187}
188
189static inline void kvm_vgic_flush_hwstate(struct kvm_vcpu *vcpu) {}
190static inline void kvm_vgic_sync_hwstate(struct kvm_vcpu *vcpu) {}
191
192static inline int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid,
193 unsigned int irq_num, bool level)
194{
195 return 0;
196}
197
198static inline int kvm_vgic_vcpu_pending_irq(struct kvm_vcpu *vcpu)
199{
200 return 0;
201}
202
203static inline bool vgic_handle_mmio(struct kvm_vcpu *vcpu, struct kvm_run *run,
204 struct kvm_exit_mmio *mmio)
205{
206 return false;
207}
208
209static inline int irqchip_in_kernel(struct kvm *kvm)
210{
211 return 0;
212}
213
214static inline bool vgic_initialized(struct kvm *kvm)
215{
216 return true;
217}
218#endif
219
220#endif
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-14 03:20:32 -0500