Refactored PCIe drivers

[EDGW]

Refactored the PCIe driver to fix the issue of PCIe being unavailable on RISC-V.

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[Copilot]

Pull request overview

Refactors the kernel PCIe stack to improve ECAM host-bridge probing, bus enumeration, and resource/BAR allocation (aimed at restoring PCIe availability on RISC-V), and updates QEMU platform configs accordingly.

Changes:

• Split PCIe “domain” concerns into dedicated modules (resources/apertures/interrupt routing) and updated host-bridge probing to populate them from DT properties.
• Reworked PCIe bridge/bus enumeration and introduced an explicit resource-allocation stage (alloc_resources) for BAR/aperture programming.
• Updated PCIe remap registry semantics (store Weak<IoRemap>) and modernized ECAM/address-type utilities and docs.

Reviewed changes

Copilot reviewed 22 out of 22 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
conf/platforms/qemu-virt-rv64.toml	Adds commented QEMU PCIe virtio-blk configuration snippets.
conf/platforms/qemu-virt-la64.toml	Adjusts rootfs block device path to vdb.
anemone-kernel/src/driver/virtio/pcie.rs	Updates PCI function identifier type and endpoint matching.
anemone-kernel/src/driver/pcie_drivers/platform.rs	Refactors generic ECAM host-bridge probe to build a PcieDomain from DT ranges/interrupt-map.
anemone-kernel/src/driver/pcie_drivers/mod.rs	Adds module docs and fixes module ordering.
anemone-kernel/src/driver/pcie_drivers/bus.rs	Major rewrite of bridge driver: enumeration, resource allocation, and teardown logic.
anemone-kernel/src/device/mod.rs	Enhances device listing output with device-kind labeling.
anemone-kernel/src/device/bus/pcie/remap.rs	Changes remap registry to store Weak<IoRemap> and lazily purge expired entries.
anemone-kernel/src/device/bus/pcie/mod.rs	Exposes new domain module and renames class-code constants.
anemone-kernel/src/device/bus/pcie/fwnode.rs	Updates interrupt-info type imports and adds docs.
anemone-kernel/src/device/bus/pcie/ecam.rs	Adds richer typed helpers/iterators and more ECAM/config-space documentation.
anemone-kernel/src/device/bus/pcie/driver.rs	Introduces BAR probing/allocation + default alloc_resources hook in PcieDriver.
anemone-kernel/src/device/bus/pcie/domain/resources.rs	New PCIe domain resource manager (bus numbers, apertures, IRQ routing).
anemone-kernel/src/device/bus/pcie/domain/mod.rs	New domain module wrapper and domain ID type.
anemone-kernel/src/device/bus/pcie/domain/intr.rs	New interrupt routing table with mask-based matching.
anemone-kernel/src/device/bus/pcie/domain/aperture.rs	New aperture allocators + AvailableApertures selection for BAR allocation.
anemone-kernel/src/device/bus/pcie/domain.rs	Removes the previous monolithic domain implementation (replaced by modules above).
anemone-kernel/src/device/bus/pcie/device.rs	Refactors PCIe device types (bus vs endpoint+subbus) and adds BAR bookkeeping.
anemone-kernel/src/device/bus/pcie/bus.rs	Reworks bus registration flow to run preinit → alloc_resources → postinit → probe.
anemone-kernel/src/device/bus/pcie/addr.rs	Renames PCI function address type and improves formatting/docs.
anemone-kernel/crates/range-allocator/src/lib.rs	Changes aligned allocation preconditions (currently breaks zero-align behavior).
anemone-kernel/crates/range-allocator/src/increasing.rs	Adds free_size and adjusts alignment validation (currently breaks zero-align tests).

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