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authorChristoffer Dall <christoffer.dall@arm.com>2018-09-18 20:08:18 +0300
committerMarc Zyngier <marc.zyngier@arm.com>2019-02-20 00:05:41 +0300
commite604dd5d45c75c2112424dec74853efb708f4fa6 (patch)
tree0898f81bdaa7ab3e90338ffaf7e8bd34ec2dc914 /include/kvm/arm_arch_timer.h
parent84135d3d18da2ff17d3ad1a609b2818cc3049552 (diff)
downloadlinux-e604dd5d45c75c2112424dec74853efb708f4fa6.tar.xz
KVM: arm/arm64: timer: Rework data structures for multiple timers
Prepare for having 4 timer data structures (2 for now). Move loaded to the cpu data structure and not the individual timer structure, in preparation for assigning the EL1 phys timer as well. Signed-off-by: Christoffer Dall <christoffer.dall@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'include/kvm/arm_arch_timer.h')
-rw-r--r--include/kvm/arm_arch_timer.h41
1 files changed, 21 insertions, 20 deletions
diff --git a/include/kvm/arm_arch_timer.h b/include/kvm/arm_arch_timer.h
index d26b7fde9935..ab835112204d 100644
--- a/include/kvm/arm_arch_timer.h
+++ b/include/kvm/arm_arch_timer.h
@@ -36,6 +36,8 @@ enum kvm_arch_timer_regs {
};
struct arch_timer_context {
+ struct kvm_vcpu *vcpu;
+
/* Registers: control register, timer value */
u32 cnt_ctl;
u64 cnt_cval;
@@ -43,32 +45,31 @@ struct arch_timer_context {
/* Timer IRQ */
struct kvm_irq_level irq;
- /*
- * We have multiple paths which can save/restore the timer state
- * onto the hardware, so we need some way of keeping track of
- * where the latest state is.
- *
- * loaded == true: State is loaded on the hardware registers.
- * loaded == false: State is stored in memory.
- */
- bool loaded;
-
/* Virtual offset */
- u64 cntvoff;
+ u64 cntvoff;
+
+ /* Emulated Timer (may be unused) */
+ struct hrtimer hrtimer;
};
struct arch_timer_cpu {
- struct arch_timer_context vtimer;
- struct arch_timer_context ptimer;
+ struct arch_timer_context timers[NR_KVM_TIMERS];
/* Background timer used when the guest is not running */
struct hrtimer bg_timer;
- /* Physical timer emulation */
- struct hrtimer phys_timer;
-
/* Is the timer enabled */
bool enabled;
+
+ /*
+ * We have multiple paths which can save/restore the timer state
+ * onto the hardware, so we need some way of keeping track of
+ * where the latest state is.
+ *
+ * loaded == true: State is loaded on the hardware registers.
+ * loaded == false: State is stored in memory.
+ */
+ bool loaded;
};
int kvm_timer_hyp_init(bool);
@@ -98,10 +99,10 @@ void kvm_timer_init_vhe(void);
bool kvm_arch_timer_get_input_level(int vintid);
-#define vcpu_vtimer(v) (&(v)->arch.timer_cpu.vtimer)
-#define vcpu_ptimer(v) (&(v)->arch.timer_cpu.ptimer)
-#define vcpu_get_timer(v,t) \
- (t == TIMER_VTIMER ? vcpu_vtimer(v) : vcpu_ptimer(v))
+#define vcpu_timer(v) (&(v)->arch.timer_cpu)
+#define vcpu_get_timer(v,t) (&vcpu_timer(v)->timers[(t)])
+#define vcpu_vtimer(v) (&(v)->arch.timer_cpu.timers[TIMER_VTIMER])
+#define vcpu_ptimer(v) (&(v)->arch.timer_cpu.timers[TIMER_PTIMER])
u64 kvm_arm_timer_read_sysreg(struct kvm_vcpu *vcpu,
enum kvm_arch_timers tmr,