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ACPI Device() objects that do not have any device IDs available via the _HID or _CID methods. Without a device ID a device driver cannot attach to the device anyway. Namespace objects that are devices but not of type ACPI_TYPE_DEVICE are not affected. A few BIOSes have also attached a _CRS method to a PCI device to allocate resources that are not managed via a BAR. With the previous code those resources are allocated from acpi0 directly which can interfere with the new PCI-PCI bridge driver (since the PCI device in question may be behind a bridge and its resources should be allocated from that bridge's windows instead). The resources were also orphaned and and would end up associated with some other random device whose device_t reused the pointer of the original ACPI-enumerated device (after it was free'd by the ACPI PCI bus driver) in devinfo output which was confusing. If we want to handle _CRS on PCI devices we can adjust the ACPI PCI bus driver to do that in the future and associate the resources with the proper device object respecting PCI-PCI bridges, etc. Note that with this change the ACPI PCI bus driver no longer has to delete ACPI-enumerated device_t devices that mirror PCI devices since they should in general not exist. There are rare cases when a BIOS will give a PCI device a _HID (e.g. I've seen a PCI-ISA bridge given a _HID for a system resource device). In that case we leave both the ACPI and PCI-enumerated device_t objects around just as in the previous code. |
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| .. | ||
| Osd | ||
| acpi.c | ||
| acpi_acad.c | ||
| acpi_battery.c | ||
| acpi_button.c | ||
| acpi_cmbat.c | ||
| acpi_cpu.c | ||
| acpi_dock.c | ||
| acpi_ec.c | ||
| acpi_hpet.c | ||
| acpi_hpet.h | ||
| acpi_if.m | ||
| acpi_isab.c | ||
| acpi_lid.c | ||
| acpi_package.c | ||
| acpi_pci.c | ||
| acpi_pci_link.c | ||
| acpi_pcib.c | ||
| acpi_pcib_acpi.c | ||
| acpi_pcib_pci.c | ||
| acpi_pcibvar.h | ||
| acpi_perf.c | ||
| acpi_powerres.c | ||
| acpi_quirk.c | ||
| acpi_quirks | ||
| acpi_resource.c | ||
| acpi_smbat.c | ||
| acpi_smbus.h | ||
| acpi_thermal.c | ||
| acpi_throttle.c | ||
| acpi_timer.c | ||
| acpi_video.c | ||
| acpiio.h | ||
| acpivar.h | ||