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pci_host_generic:Add pcib_request_feature on ACPI

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In the ACPI attachment add support for the pcib_request_feature method.
This uses the common _OSC handling.

Reviewed by:	imp, jhb
Sponsored by:	Arm Ltd
Differential Revision:	https://reviews.freebsd.org/D48048
This commit is contained in:
Andrew Turner 2024-12-12 16:30:39 +00:00
parent deb36d0c65
commit 1f5c50a861
2 changed files with 28 additions and 0 deletions
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27
sys/dev/pci/pci_host_generic_acpi.c
View file

@ -287,6 +287,8 @@ pci_host_generic_acpi_init(device_t dev)
sc = device_get_softc(dev);
handle = acpi_get_handle(dev);
acpi_pcib_osc(dev, &sc->osc_ctl, 0);
/* Get Start bus number for the PCI host bus is from _BBN method */
status = acpi_GetInteger(handle, "_BBN", &sc->base.bus_start);
if (ACPI_FAILURE(status)) {
@ -504,6 +506,30 @@ generic_pcie_acpi_get_id(device_t pci, device_t child, enum pci_id_type type,
return (pcib_get_id(pci, child, type, id));
}
static int
generic_pcie_acpi_request_feature(device_t pcib, device_t dev,
enum pci_feature feature)
{
struct generic_pcie_acpi_softc *sc;
uint32_t osc_ctl;
sc = device_get_softc(pcib);
switch (feature) {
case PCI_FEATURE_HP:
osc_ctl = PCIM_OSC_CTL_PCIE_HP;
break;
case PCI_FEATURE_AER:
osc_ctl = PCIM_OSC_CTL_PCIE_AER;
break;
default:
return (EINVAL);
}
return (acpi_pcib_osc(pcib, &sc->osc_ctl, osc_ctl));
}
static device_method_t generic_pcie_acpi_methods[] = {
DEVMETHOD(device_probe, generic_pcie_acpi_probe),
DEVMETHOD(device_attach, pci_host_generic_acpi_attach),
@ -517,6 +543,7 @@ static device_method_t generic_pcie_acpi_methods[] = {
DEVMETHOD(pcib_release_msix, generic_pcie_acpi_release_msix),
DEVMETHOD(pcib_map_msi, generic_pcie_acpi_map_msi),
DEVMETHOD(pcib_get_id, generic_pcie_acpi_get_id),
DEVMETHOD(pcib_request_feature, generic_pcie_acpi_request_feature),
DEVMETHOD_END
};

1
sys/dev/pci/pci_host_generic_acpi.h
View file

@ -35,6 +35,7 @@
struct generic_pcie_acpi_softc {
struct generic_pcie_core_softc base;
int segment;
uint32_t osc_ctl;
ACPI_BUFFER ap_prt; /* interrupt routing table */
};