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[0/3] RISC-V: ACPI: Namespace updates

Message ID 20240528073103.1075812-1-sunilvl@ventanamicro.com
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Series RISC-V: ACPI: Namespace updates | expand

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Sunil V L May 28, 2024, 7:31 a.m. UTC 
This series adds few updates to RISC-V ACPI namespace for virt platform.

1) PCI Link devices need to be created outside the scope of the PCI root
complex to ensure correct probe ordering by the OS. This matches the
example given in ACPI spec as well.

2) Add PLIC and APLIC as platform devices as well to ensure probing
order as per BRS spec [1] requirement.

3) BRS spec requires RISC-V to use new ACPI ID for the generic UART. So,
update the HID of the UART.

[1] - https://github.com/riscv-non-isa/riscv-brs

Sunil V L (3):
  gpex-acpi: Support PCI link devices outside the host bridge
  hw/riscv/virt-acpi-build.c: Add namespace devices for PLIC and APLIC
  hw/riscv/virt-acpi-build.c: Update the HID of RISC-V UART

 hw/pci-host/gpex-acpi.c    | 29 +++++++++++++++----
 hw/riscv/virt-acpi-build.c | 57 +++++++++++++++++++++++++++++++++++---
 include/hw/pci-host/gpex.h |  5 +++-
 3 files changed, 81 insertions(+), 10 deletions(-)