drm: New option DRM_LEGACY.

This brings in the `drmums' components, which are the parts of the
current drm code base (sys/external/bsd/drm2) needed by legacy
user-mode-setting drivers (currently just viadrmums), in contrast to
the old drm code base (sys/external/bsd/drm).

This way, viadrmums.kmod can be loaded into GENERIC i386 kernels, but
platforms without any relevant legacy UMS drivers don't get the
legacy goo statically baked in.

drmkms_sched: Remove duplicate module definition.

drm: Fix CPPFLAGS for drm scheduler code.

drm: Split scheduler into separate module.

Used only by amdgpu, and it uses something that is currently broken
from the gcc update on aarch64, so let's make it a little more
optional.

drm: Keep drm include flags in CPPFLAGS.drmkms after all.

Failures from this are much more obvious to debug than files with
missing #ifdefs, which sometimes lead to build failures but could
also just lead to silent miscompilation.

drm: Restore pollution of CPPFLAGS with include directories.

Too much trouble to make this fine-grained.

drm: Undefine `alpha' in CPPFLAGS. Causes lotsa trouble!

But don't undefine it outside drmkms; `#ifdef alpha' or equivalent is
used elsewhere in-tree. (Maybe it should be replaced by __alpha__.)

drm: Narrow scope of drm CPPLAGS just to drm files.

No need for various Linux compat definitions elsewhere in the kernel.

drm: Propagate CPPFLAGS.drmkms into all the drm drivers.

drm: Note dependency on sysmon_power.

drm uses this for pswitch events to notify of hotplug.

rename CONFIG_AARCH64 to CONFIG_ARM64 which is what upstream code expects

drm: sprinkle some -Wno-unused-function for clang

915_sw_fence.c: for debug_fence_init_onstack
drm_mm.c: for rb_hole_size_to_node
intel_hdmi.c: for intel_hdmi_hdcp2_protocol
intel_guc_submission.c: for rq_prio
nouveau_nvkm_subdev_instmem_base.c: for fake_ioread32_native
nouveau_nvkm_subdev_mmu_vmmnv04.c: for nv04_vmm_pgt_pte

drm: Make scheduler mandatory to make amdgpu module simpler.

drm: Make some legacy UMS crap build.

amdgpu: Stub out irq domain stuff with a finer grain.

drm: Place drm_hdcp.c like other overrides in files.drmkms.

drm: Stub out drm_hdcp.c

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.

Get drm_mm.c building.

Just replace the interval tree lookup by a linear search for now.

Revert part of previous: no separate CPPFLAGS.drmkms.

There are too many drms users outside sys/external/bsd/drm2 for now;
will hold off on this until we find a better way to keep the drm
includes modularized.

Narrow the CPPFLAGS for drm subsystems.

No need for the whole kernel to be built with -I flags for the drm
header files.

drm_client stubs

Regen and remerge.

drm_writeback stubs

Eliminate drm_file.c copypasta.

Rerun drm2netbsd and merge.

New tag drmums for the legacy stuff; to deal with later for via.

Empty out drm_os_netbsd.h.

Disable missing files for now.

Merge updated drm2netbsd output.

Remove these two files from the list.

We have our own copies of the same name. Since we don't support
building two files with the same name, it's pretty clear the
intention was to build just our copy of the file.


Author: Maya Rashish <maya@NetBSD.org>

upstream shadows, disable warning


Author: Maya Rashish <maya@NetBSD.org>

We have local versions of these files, don't use upstream ones


Author: Maya Rashish <maya@NetBSD.org>

Upstream uses shadowing, disable warning


Author: Maya Rashish <maya@NetBSD.org>

Disable warnings about shadowing.

Upstream does shadowing here, I'm feeling uncomfortable changing their
code.


Author: Maya Rashish <maya@NetBSD.org>

skip upstream drm_cache.c, we have our own


Author: Maya Rashish <maya@NetBSD.org>

Remove duplicates and non-existent files.


Author: Maya Rashish <maya@NetBSD.org>

misc drm hacks

Unhook drm_kms_helper_common.c from build.

Define CONFIG_DRM_FBDEV_OVERALLOC=100 to match upstream.

Rename drm_fops.c -> drm_file.c

Use -Wno-missing-field-initializers for drm to reduce diffs.

Move IS_REACHABLE to <linux/kernel.h> to avoid double definition.

Define IS_ENABLED and IS_REACHABLE on the command line.

Header file is too late for it, apparently.

XXX Find a way to put this into a header file; command-line -D
arguments are ugly.

No more hacks for dist/uapi -- got moved to dist/include/uapi.

Disable *_trace_points.c.

I accidentally deleted these in the import, because the *_trace.h
files got in the way and I forgot the *_trace_points.c files were
fine.

There's nothing important in them anyway, so nothing of value is
lost. Maybe next time I will remember to delete the *_trace.h files
on import but not the *_trace_points.c to reduce diffs, but that's
too much trouble at this point.

Unfinished local implementation of GPL drm_lease.c.

Local reimplementation of GPL drm_gem_framebuffer_helper.c.

Generate files.* using the 2netbsd scripts.


Author: Maya Rashish <maya@NetBSD.org>

drm2: build with -fwrapv, since the Linux kernel does and we don't
want to spend too much time fixing their code. silences a lot of
KUBSAN warnings.

we need to use COPTS to have per-option compiler flags. help from
Riastradh.

branches: 1.34.10; 1.34.14;
Eliminate -Wpointer-arith patches; use -Wno-pointer-arith instead.

branches: 1.33.2;
build drm_panel.c w/ drmkms

don't build stub if legacy drm is present too.

Add a stub for drm_ioctl() so that compat32 links with kernels without drmkms.

branches: 1.30.4;
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.

Unhook upstream drm_pci.c, apparently overridden by files.drmkms_pci.

Draft support for drm prime.

Define CONFIG_DRM_FBDEV_EMULATION=1 in generic drmkms code.

This was accidentally pulled in by i915drmkms, but we need it
generically or else we need to patch upstream differently.

Sort. Put CWARNFLAGS next to source lists.

drm_fb_helper.c got lost in the merge, restore it.

Move drm_ioctl to drm_ioctl.c.

Previously it was in drm_drv.c upstream, which we overrode; then it
got moved to drm_ioctl.c and drm_drv.c got deleted, so we no longer
need to maintain a separate copy of the table in what we now call
drm_cdevsw.c.

Patch up drm_atomic_helper.c.

- Mark unused variables as such.
. Mistakes in local patches are likely to lead to unused variables,
so keep this warning enabled.
- Build with -Wno-shadow.
. Local patches aren't likely to cause this, so just suppress it.
- static plane_crtc_active

We have a local override for drm_encoder_slave.c.

Reorder header files to avoid drm_legacy.h lossage.

Restore more locally overridden files.

Rename drm_drv.c to drm_cdevsw.c.

Previously we overrode upstream's drm_drv.c altogether, and used
upstream's drm_stub.c subroutines.

But upstream deleted drm_drv.c and renamed drm_stub.c to drm_drv.c,
so we have to cope with that reshuffle.

Apply locally overridden files.

Omit PCI files from files.drmkms.

regen files.drmkms

Move local files to the top to make them more visible.

branches: 1.14.2; 1.14.4;
Implement the DRM GEM/CMA helpers. The implementation has been extracted
from our tegra DRM driver, but generalized for use with other drivers.

Move linux_work.c and workqueue.h from sys/external/bsd/drm2 to
sys/external/common so that they can be used by others.

LGTM from riastradh@

These should really live outside sys/external, but that can be decided
later

Tweak IS_ENABLED to allow CONFIG_FOO values.

No functional change to drm2.

LGTM from riastradh@

Factor generic parts of intelfb out into a drmfb.

Adapting radeondrmkmsfb should not be hard.

This will make nouveaufb easier too.

Rewrite drm_encoder_slave.c, as nouveau will need.

branches: 1.9.2;
Add __link_set based code to automatically convert the linux module parameters
into sysctls.

Split drm ttm config into a separate file.

branches: 1.7.2; 1.7.4;
First whack at radeon driver.

No hardware to test yet, but it builds.

Make it build and boot on my test machines.

Screen blanks on boot on the Ivy Bridge system with

DRM error in cpt_serr_int_handler: PCH transcoder A FIFO underrun

But after that everything is OK. Appears to be an upstream problem.
To investigate...

I think there's a cache flushing issue somewhere -- there are little
display artefacts on my T60.

branches: 1.5.2; 1.5.4; 1.5.6;
Make drmkms find header files from sys/external/bsd/common.

Move the drmkms i2c dependencies to where they belong.

add missing dependencies (Takahiro HAYASHI)

Merge riastradh-drm2 to HEAD.

branches: 1.1.2;
file files.drmkms was initially added on branch riastradh-drm2.