Merge linux-drm-v5-6-rc3

branches: 1.2.2; 1.2.6;
merge linux-drm-v4-4-143

branches: 1.1.1;
Initial revision

Merge linux-drm-v5-6-rc3

branches: 1.3.2; 1.3.6;
Rework PCI and AGP conditionalization.

- Push drm_pci_set_unique into driver callback.
- Eliminate drm_pci_set_unique_hook.
- Gather all drm_agp_* functions into struct drm_agp_hooks.
- Replace the nonsensical old atomic garbage by serious locking.
- Make drm_agpsupport.c its own module.
- Eliminate NDRMKMS_PCI.
- Use NAGP from "agp.h" only in drm_module.c for horrible hack.
=> See comment in file for rationale.
- Always define CONFIG_PCI=1 and CONFIG_AGP=1.
- Always go through the drm_agp_* function hooks.
- Ifdef out nouveau agp stuff that doesn't go through drm_agp_*
for reasons that I'm too frustrated to figure out tonight.
- pci_iomap no longer automagically does agp_i810_borrow.
=> Use drm_agp_borrow instead.

merge linux-drm-v4-4-143

branches: 1.1.1;
Initial revision

Merge linux-drm-v5-6-rc3

branches: 1.3.2; 1.3.6;
Translate agp_info accents.

merge linux-drm-v4-4-143

branches: 1.1.1;
Initial revision

nouveau: Disable MSI on G84 devices.

Fails to switch modes with MSI, works without MSI, on T61p.

nouveau: Remove post-merge audit comments -- LGTM.

Get nouveau compiling.

Merge linux-drm-v5-6-rc3

adjust the PCI interrupt allocation code to work the same as
drm_pci_request_irq(), now the driver successfully allocates MSI interrupt

[ 3.6619808] nouveau0: info: NVIDIA GK208B (b06070b1)
[ 3.7685336] nouveau0: info: bios: version 80.28.78.00.4b
[ 3.7785491] nouveau0: interrupting at msi8 vec 0 (nouveau0)

related to PR kern/52440 by John D. Baker

Turn MSI off again.

Use the correct PCI interrupt type based on what the driver has configured

branches: 1.4.4; 1.4.8;
Disable MSI/MSI-X for nouveau.

Fixes functionality for me (GTX 770) and apparently anyone with
MSI/MSI-X capable hardware.

branches: 1.3.2;
Simplify with DRM_IRQ_ARGS, fix typo, ifdef out unnecessary stuff.

merge linux-drm-v4-4-143

branches: 1.1.1;
Initial revision

Merge linux-drm-v5-6-rc3

branches: 1.2.2; 1.2.6;
merge linux-drm-v4-4-143

branches: 1.1.1;
Initial revision

Merge linux-drm-v5-6-rc3

branches: 1.1.1;
Initial revision

Merge linux-drm-v5-6-rc3

branches: 1.2.2; 1.2.6;
merge linux-drm-v4-4-143

branches: 1.1.1;
Initial revision

Merge linux-drm-v5-6-rc3

branches: 1.2.2; 1.2.6;
merge linux-drm-v4-4-143

branches: 1.1.1;
Initial revision

Merge linux-drm-v5-6-rc3

branches: 1.1.1;
Initial revision

Merge linux-drm-v5-6-rc3

branches: 1.1.1;
Initial revision

Merge linux-drm-v5-6-rc3

branches: 1.1.1;
Initial revision

Merge linux-drm-v5-6-rc3

branches: 1.2.2; 1.2.6;
merge linux-drm-v4-4-143

branches: 1.1.1;
Initial revision

Merge linux-drm-v5-6-rc3

branches: 1.2.2; 1.2.6;
merge linux-drm-v4-4-143

branches: 1.1.1;
Initial revision

Merge linux-drm-v5-6-rc3

branches: 1.2.2; 1.2.6;
merge linux-drm-v4-4-143

branches: 1.1.1;
Initial revision

Merge linux-drm-v5-6-rc3

branches: 1.2.2; 1.2.6;
merge linux-drm-v4-4-143

branches: 1.1.1;
Initial revision

drm: enable almost all PCIe functionality

linux_pci.c revisions 1.24 and 1.25 implemented most of the remaining
missing PCIe backends, but only enabled them for some amdgpu portions.

this enables all code marked with "XXX amdgpu pcie", "XXX radeon pcie",
and "XXX pcie speed". for most of it, simply removing #ifndefs __NetBSD__
to enable compliation was required, once the new "bus->max_bus_speed"
member was added to struct pci_bus. add an "always fails" backend for
pci_enable_atomic_ops_to_root() which seems to only be necessary
for virtual GPU functionality (and could be implemented if needed.)

tested on radeon 5450, 7750, R7 240 [radeon], and RX 550 [amdgpu], and
nvidia 750 and 1030 [nouveau].


this still does not quite work on nvidia cards. there are two problems
that remain:

- the call to set the link speed is skipped because the speed is set
to the default value of "-1". nvkm_pcie_set_link() will actually
determine the right value for this and for some cards, calling this
function if the current speed is -1 helps set the link speed. it
may be that on linux other paths we don't have enabled properly
would set this (there's one via debugfs, and a jetson specific one,
though perhaps setting either AC or DC speed values as boot options
(after hooking up these for netbsd) would currently work.

- worse, cards newer than kepler - geforce 900, 1000, and newer, are
all lacking the backing support to set pcie link speed. the GT 1030
card i have been testing with remains at pcie 1.0.

avoid an unlikely array bounds issue picked up by GCC 12.

nvkm_pcie_speed() can return -1, which is then used as an array index,
so make this default return PCIe 1.0 speeds.

branches: 1.3.4;
Get nouveau compiling.

Merge linux-drm-v5-6-rc3

branches: 1.1.1;
Initial revision

Merge linux-drm-v5-6-rc3

branches: 1.2.2; 1.2.6;
merge linux-drm-v4-4-143

branches: 1.1.1;
Initial revision