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vmm: Rename PCI_MMIO_CONFIG_SIZE and move it to arch

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The constant `PCI_MMIO_CONFIG_SIZE` defined in `vmm/pci_segment.rs`
describes the MMIO configuation size for each PCI segment. However,
this name conflicts with the `PCI_MMCONFIG_SIZE` defined in `layout.rs`
in the `arch` crate, which describes the memory size of the PCI MMIO
configuration region.

Therefore, this commit renames the `PCI_MMIO_CONFIG_SIZE` to
`PCI_MMIO_CONFIG_SIZE_PER_SEGMENT` and moves this constant from `vmm`
crate to `arch` crate.

Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This commit is contained in:
Henry Wang
2021-11-25 21:53:59 -05:00
committed by Rob Bradford
parent 07bef815cc
commit 2f8540da70
3 changed files with 9 additions and 7 deletions
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arch/src/x86_64/layout.rs
+2
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@@ -93,6 +93,8 @@ pub const MEM_32BIT_DEVICES_SIZE: u64 = 640 << 20;
pub const PCI_MMCONFIG_START: GuestAddress =
GuestAddress(MEM_32BIT_DEVICES_START.0 + MEM_32BIT_DEVICES_SIZE);
pub const PCI_MMCONFIG_SIZE: u64 = 256 << 20;
// One bus with potentially 256 devices (32 slots x 8 functions).
pub const PCI_MMIO_CONFIG_SIZE_PER_SEGMENT: u64 = 4096 * 256;
// TSS is 3 pages after the PCI MMCONFIG space
pub const KVM_TSS_START: GuestAddress = GuestAddress(PCI_MMCONFIG_START.0 + PCI_MMCONFIG_SIZE);