The main thing here is the addition of support for Volta GV100 GPUs,
everything else basically restructuring display / graphics init code
to make it possible to fit Volta support in more nicely.

There's a bunch of improvements/fixes scattered in there for earlier
GPUs too, particularly graphics engine init on all GPUs from Fermi
onwards.
Signed-off-by: NDave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CACAvsv7sjDKyR43n+6=iLC+ExGhBTLRLdKqwrhcfJWjEAndK0g@mail.gmail.com

Inserted wait-for-gr-idle in the places it seems that RM does it, seems
to prevent some random mmio timeouts on Quadro GV100.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

It's better to use "list_for_each_entry_from_reverse" for iterating list
than "for loop" as it makes the code more clear to read.
This patch replace "for loop" with "list_for_each_entry_from_reverse"
and "start" variable with "cstate" which helps in refactoring
the code and also "cstate" variable is more commonly used in the other
functions.

changes in v2:
"start" variable is removed, before "cstate" variable was removed
but "cstate" is more common so preferred "cstate" over "start".
Signed-off-by: NArushi Singhal <arushisinghal19971997@gmail.com>
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

A NV34 GPU was seeing temp and pwm entries in hwmon, which would error
out when read. These should not have been visible, but also the whole
hwmon object should just not have been registered in the first place.
Signed-off-by: NIlia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

The method struct vga_switcheroo_handler::get_client_id() is defined
as returning an 'enum vga_switcheroo_client_id' but the implementation
in this driver, nouveau_dsm_get_client_id(), returns an 'int'.

Fix this by returning 'enum vga_switcheroo_client_id' in this driver too.
Signed-off-by: NLuc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

The method struct drm_connector_helper_funcs::mode_valid is defined
as returning an 'enum drm_mode_status' but the driver implementation
for this method uses an 'int' for it.

Fix this by using 'enum drm_mode_status' in the driver too.
Signed-off-by: NLuc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

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

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

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

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

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

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

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

Appears to be compatible with GP102.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

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

Appears to be compatible with GM107.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

VEID support hacked in here, as it's the most convenient place for now.

Will be refined once it's better understood.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Appears to be compatible with GP102.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

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

Can't imagine this will be any different.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Appears to be compatible with GK20A.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Appears to be compatible with GF100.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Appears to be compatible with GP100.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Appears to be compatible with GM107.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Appears to be compatible with GM200.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Appears to be compatible with GK104.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Appears to be compatible with GM200.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

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

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

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

No real surprises here so far.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Appears to be compatible with GP100.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

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

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

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

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

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

Will be required to support Volta.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Required to eventually support DRM colour management APIs, and to
support Volta.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

When only the position of a window changes, there's no need to submit
an image update as well.

Will be required to support the overlays, and Volta windows.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>