linux/pci.h: Stubs for pci_request/release_region(s).

add pcie capability and read request size linux compat, some pci root support

implement support for:
- pcie_capability_read_dword()
- pcie_capability_read_word()
- pcie_capability_write_dword()
- pc

add pcie capability and read request size linux compat, some pci root support

implement support for:
- pcie_capability_read_dword()
- pcie_capability_read_word()
- pcie_capability_write_dword()
- pcie_capability_write_word()
- pcie_get_readrq()
- pcie_set_readrq()

implement the "struct pci_dev" bus->self member by creating a minimal fake
"struct pci_dev" for the pci bus itself. this is kind of gross. it checks
that the current device's parent is a netbsd "pci" device, and that it has
a (grand) parent "ppb" device, and then fills in the fake device based upon
the pci and ppb devices.

add some PCIE_LCSR2_TGT_LSPEED encodings, and map them to linux names.
map several other PCIE_LCSR and PCIE_LCAP names.

uncomment several pcie code segments in radeon and amdgpu. (not sure that
we can test the amdgpu_si.c change, as we use the radeon version and the
amdgpu version hangs on the one machine i have.)

tested on amdgpu (RX550) and radeon (7750 & 3650).


ok @riastradh

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fill out more of the linux pci API compat

- implement pcie_get_speed_cap(), pcie_bandwidth_available(), and
pci_is_root_bus().
- expand "enum pci_bus_speed" to add PCIe 5.x and 6.x speeds.
- add "

fill out more of the linux pci API compat

- implement pcie_get_speed_cap(), pcie_bandwidth_available(), and
pci_is_root_bus().
- expand "enum pci_bus_speed" to add PCIe 5.x and 6.x speeds.
- add "enum pcie_link_width".
- add defines for PCIE_LCSR_LINKSPEED (PCIe generation) and PCIE_LCSR_NLW
(negotiated lane width) to pcireg.h
- enable amdgpu_device_get_pcie_info() code now it works.

ok riastradh@

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linux: Define PCI_CLASS_DISPLAY_OTHER, wanted by radeon/amdgpu.

drm: Omit needless conditionals around #include "acpica.h".

linux: PCI_BUS_NUM; tweak types for PCI_SLOT/PCI_FUNC.

linux: pci_name

i915: another whack at it

drm: Remove local diffs for drm_pci_set_busid.

Instead, move it to its own file that can be safely used without
bringing in a link/run-time dependency on pci.

Move acpi includes to linux_pci.c to avoid pollution.

Provide enum pci_bus_speed

We don't really make use of it but why not.


Author: Maya Rashish <maya@NetBSD.org>

Stub dev_is_pci


Author: Maya Rashish <maya@NetBSD.org>

Define pci_is_thunderbolt_attached (answer: no).

Side-load <linux/interrupt.h> in <linux/pci.h>.

Define pci_get/set_drvdata properly.

pci_get_bus_and_slot -> pci_get_domain_bus_and_slot

Define some obscure PCI ids.

Reduce diffs by side-loading some header files like Linux.

From riastradh

Pull in acpica.h on aarch64

Move the Linux PCI shim into its very own .c file.

The poor thing has deserved this for a very long time, even though it
is full of kludges. Also I'm tired of recompiling everything every
time I to

Move the Linux PCI shim into its very own .c file.

The poor thing has deserved this for a very long time, even though it
is full of kludges. Also I'm tired of recompiling everything every
time I touch it.

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Fix sense of test to make linux_pci_dev_destroy work.

Initialize more of struct pci_device.

Implement linux_pci_dev_destroy.

Pass the parent explicitly to linux_pci_dev_init.

This will allow us to use it in match routines.

Free the bus crap.