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| author | Andre Przywara <andre.przywara@arm.com> | 2018-07-05 16:48:23 +0100 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2019-02-19 21:05:40 +0000 |
| commit | 84135d3d18da2ff17d3ad1a609b2818cc3049552 (patch) | |
| tree | c72a908ddb0d63d73e186273e3b12c0f180ea9c2 /include | |
| parent | 09838de943d4c0ee75a99cd7665940705ab8dcea (diff) | |
| download | linux-0-day-84135d3d18da2ff17d3ad1a609b2818cc3049552.tar.gz linux-0-day-84135d3d18da2ff17d3ad1a609b2818cc3049552.tar.xz | |
KVM: arm/arm64: consolidate arch timer trap handlers
At the moment we have separate system register emulation handlers for
each timer register. Actually they are quite similar, and we rely on
kvm_arm_timer_[gs]et_reg() for the actual emulation anyways, so let's
just merge all of those handlers into one function, which just marshalls
the arguments and then hands off to a set of common accessors.
This makes extending the emulation to include EL2 timers much easier.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
[Fixed 32-bit VM breakage and reduced to reworking existing code]
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
[Fixed 32bit host, general cleanup]
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/kvm/arm_arch_timer.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/kvm/arm_arch_timer.h b/include/kvm/arm_arch_timer.h index d6e6a45d1d240..d26b7fde99355 100644 --- a/include/kvm/arm_arch_timer.h +++ b/include/kvm/arm_arch_timer.h @@ -22,6 +22,19 @@ #include <linux/clocksource.h> #include <linux/hrtimer.h> +enum kvm_arch_timers { + TIMER_PTIMER, + TIMER_VTIMER, + NR_KVM_TIMERS +}; + +enum kvm_arch_timer_regs { + TIMER_REG_CNT, + TIMER_REG_CVAL, + TIMER_REG_TVAL, + TIMER_REG_CTL, +}; + struct arch_timer_context { /* Registers: control register, timer value */ u32 cnt_ctl; @@ -87,5 +100,15 @@ 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)) + +u64 kvm_arm_timer_read_sysreg(struct kvm_vcpu *vcpu, + enum kvm_arch_timers tmr, + enum kvm_arch_timer_regs treg); +void kvm_arm_timer_write_sysreg(struct kvm_vcpu *vcpu, + enum kvm_arch_timers tmr, + enum kvm_arch_timer_regs treg, + u64 val); #endif |