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arm: vgic device control api support

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Support creating the ARM vgic device through the device control API and
setting the base address for the distributor and cpu interfaces in KVM
VMs using this API.

Because the older KVM_CREATE_IRQCHIP interface needs the irq chip to be
created prior to creating the VCPUs, we first test if we can use the
device control API in kvm_arch_irqchip_create (using the test flag from
the device control API).  If we cannot, it means we have to fall back to
KVM_CREATE_IRQCHIP and use the older ioctl at this point in time.  If
however, we can use the device control API, we don't do anything and
wait until the arm_gic_kvm driver initializes and let that use the
device control API.

Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Message-id: 1392687720-26806-5-git-send-email-christoffer.dall@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Christoffer Dall 2014-02-26 17:20:00 +00:00 • committed by Peter Maydell
parent 0a6a7ccaae
commit 1da41cc1c6
4 changed files with 80 additions and 15 deletions
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1
include/hw/intc/arm_gic_common.h
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@ -104,6 +104,7 @@ typedef struct GICState {
MemoryRegion cpuiomem[GIC_NCPU + 1]; /* CPU interfaces */
uint32_t num_irq;
uint32_t revision;
int dev_fd; /* kvm device fd if backed by kvm vgic support */
} GICState;
#define TYPE_ARM_GIC_COMMON "arm_gic_common"