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aarch64: Refactor AArch64 GIC space definitions

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Move the definition of MSI space to layout.rs, so other crates can
reference it. Now it is needed by virtio-iommu.

Signed-off-by: Michael Zhao <michael.zhao@arm.com>
This commit is contained in:
Michael Zhao
2021-09-06 21:11:41 +08:00
committed by Sebastien Boeuf
parent 253c06d3ba
commit b30ddc0837
3 changed files with 16 additions and 12 deletions
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arch/src/aarch64/layout.rs
+11
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@@ -55,6 +55,17 @@ pub const UEFI_SIZE: u64 = 0x040_0000;
/// Below this address will reside the GIC, above this address will reside the MMIO devices.
pub const MAPPED_IO_START: u64 = 0x0900_0000;
/// See kernel file arch/arm64/include/uapi/asm/kvm.h for the GIC related definitions.
/// 0x08ff_0000 ~ 0x0900_0000 is reserved for GICv3 Distributor
pub const GIC_V3_DIST_SIZE: u64 = 0x01_0000;
pub const GIC_V3_DIST_START: u64 = MAPPED_IO_START - GIC_V3_DIST_SIZE;
/// Below 0x08ff_0000 is reserved for GICv3 Redistributor.
/// The size defined here is for each vcpu.
/// The total size is 'number_of_vcpu * GIC_V3_REDIST_SIZE'
pub const GIC_V3_REDIST_SIZE: u64 = 0x02_0000;
/// Below Redistributor area is GICv3 ITS
pub const GIC_V3_ITS_SIZE: u64 = 0x02_0000;
/// Space 0x0900_0000 ~ 0x0905_0000 is reserved for legacy devices.
pub const LEGACY_SERIAL_MAPPED_IO_START: u64 = 0x0900_0000;
pub const LEGACY_RTC_MAPPED_IO_START: u64 = 0x0901_0000;