drm/nouveau/imem/tu102-: prepare for GSP-RM

- move suspend/resume paths to HW-specific code
- allow (future) RM paths to be based on nv50_instmem

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230918202149.4343-15-skeggsb@gmail.com

drm/nouveau/instmem: switch to instanced constructor

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>

drm/nouveau/instmem: protect mm/lru with private mutex

nvkm_subdev.mutex is going away.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>

drm/nouveau/core/memory: add reference counting

We need to be able to prevent memory from being freed while it's still
mapped in a GPU's address-space.

Will be used by upcoming MMU changes.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/core/mm: have users explicitly define heap identifiers

Different sections of VRAM may have different properties (ie. can't be used
for compression/display, can't be mapped, etc).

We currently already support this, but it's a bit magic. This change makes
it more obvious where we're allocating from.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/imem: remove now-unused wrapper for backend objects

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/imem/nv04: directly embed nvkm_instobj into nv04_instobj

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/core/memory: split info pointers from accessor pointers

The accessor functions can change as a result of acquire()/release() calls,
and are protected by any refcounting done there.

Other functions must remain constant, as they can be called any time.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/imem: convert to new-style nvkm_subdev

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/ramht: remove dependence on namedb

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/imem/nv04-nv40: directly use instmem for vbios/ramfc/ramro

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/imem: improve management of instance memory

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/imem: remove object accessor functions

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/imem: switch to device pri macros

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/imem: cosmetic changes

This is purely preparation for upcoming commits, there should be no
code changes here.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/drm/nv04-nv40/instmem: protect access to priv->heap by mutex

This fixes the list_del corruption reported
at <https://bugzilla.redhat.com/1205985>.

Signed-off-by: Kamil Dudka <kdudka@redhat.com>

drm/nouveau/instmem: namespace + nvidia gpu names (no binary change)

The namespace of NVKM is being changed to nvkm_ instead of nouveau_,
which will be used for the DRM part of the driver. This is being
done in order to make it very clear as to what part of the driver a
given symbol belongs to, and as a minor step towards splitting the
DRM driver out to be able to stand on its own (for virt).

Because there's already a large amount of churn here anyway, this is
as good a time as any to also switch to NVIDIA's device and chipset
naming to ease collaboration with them.

A comparison of objdump disassemblies proves no code changes.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau: remove symlinks, move core/ to nvkm/ (no code changes)

The symlinks were annoying some people, and they're not used anywhere
else in the kernel tree. The include directory structure has been
changed so that symlinks aren't needed anymore.

NVKM has been moved from core/ to nvkm/ to make it more obvious as to
what the directory is for, and as some minor prep for when NVKM gets
split out into its own module (virt) at a later date.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>