linux-toradex.git/drivers/gpu/drm/virtio/virtgpu_debugfs.c, branch v5.9-rc3

drm: convert .debugfs_init() hook to return void.

2020-03-18T16:53:28+00:00

As a result of commit 987d65d01356 (drm: debugfs: make
drm_debugfs_create_files() never fail) and changes to various debugfs
functions in drm/core and across various drivers, there is no need for
the drm_driver.debugfs_init() hook to have a return value. Therefore,
declare it as void.

This also includes refactoring all users of the .debugfs_init() hook to
return void across the subsystem.

v2: include changes to the hook and drivers that use it in one patch to
prevent driver breakage and enable individual successful compilation of
this change.

References: https://lists.freedesktop.org/archives/dri-devel/2020-February/257183.html
Signed-off-by: Wambui Karuga 
Reviewed-by: Greg Kroah-Hartman 
Signed-off-by: Daniel Vetter 
Link: https://patchwork.freedesktop.org/patch/msgid/20200310133121.27913-18-wambui.karugax@gmail.com

drm/virtio: fix ring free check

2020-02-07T08:33:55+00:00

If the virtio device supports indirect ring descriptors we need only one
ring entry for the whole command.  Take that into account when checking
whenever the virtqueue has enough free entries for our command.

Signed-off-by: Gerd Hoffmann 
Reviewed-by: Chia-I Wu 
Link: http://patchwork.freedesktop.org/patch/msgid/20200207064653.14403-1-kraxel@redhat.com

drm/virtgpu: drop use of drmP.h

2019-07-15T16:11:31+00:00

Drop use of the deprecated drmP.h header file.
Fix fallout by adding missing include files.

Signed-off-by: Sam Ravnborg 
Acked-by: Gerd Hoffmann 
Acked-by: Emil Velikov 
Cc: David Airlie 
Cc: Daniel Vetter 
Cc: virtualization@lists.linux-foundation.org
Link: https://patchwork.freedesktop.org/patch/msgid/20190630061922.7254-28-sam@ravnborg.org

drm/virtio: add virtio-gpu-features debugfs file.

2019-03-28T11:11:55+00:00

This file prints which features the virtio-gpu device has.

Also add "virtio-gpu-" prefix to the existing fence file,
to make clear this is a driver-specific debugfs file.

Signed-off-by: Gerd Hoffmann 
Acked-by: Noralf Trønnes 
Link: http://patchwork.freedesktop.org/patch/msgid/20190320083612.32067-1-kraxel@redhat.com

drm/virtio: fix include notation and remove -Iinclude/drm flag

2017-05-18T05:12:31+00:00

Include  instead of relative path from include/drm, then
remove the -Iinclude/drm compiler flag.

Signed-off-by: Masahiro Yamada 
Signed-off-by: Daniel Vetter 
Link: http://patchwork.freedesktop.org/patch/msgid/1493009447-31524-17-git-send-email-yamada.masahiro@socionext.com

drm/virtio: Remove virtio_gpu_debugfs_takedown()

2017-03-01T15:09:52+00:00

drm_debugfs_cleanup() now removes all minor->debugfs_list entries
automatically, so the drm_driver.debugfs_cleanup callback is not
needed.

Cc: airlied@linux.ie
Cc: kraxel@redhat.com
Signed-off-by: Noralf Trønnes 
Signed-off-by: Daniel Vetter 
Link: http://patchwork.freedesktop.org/patch/msgid/20170126225621.12314-18-noralf@tronnes.org

drm/virtio: use %llu format string form atomic64_t

2015-10-16T01:36:36+00:00

The virtgpu driver prints the last_seq variable using the %ld or
%lu format string, which does not work correctly on all architectures
and causes this compiler warning on ARM:

drivers/gpu/drm/virtio/virtgpu_fence.c: In function 'virtio_timeline_value_str':
drivers/gpu/drm/virtio/virtgpu_fence.c:64:22: warning: format '%lu' expects argument of type 'long unsigned int', but argument 4 has type 'long long int' [-Wformat=]
  snprintf(str, size, "%lu", atomic64_read(&fence->drv->last_seq));
                      ^
drivers/gpu/drm/virtio/virtgpu_debugfs.c: In function 'virtio_gpu_debugfs_irq_info':
drivers/gpu/drm/virtio/virtgpu_debugfs.c:37:16: warning: format '%ld' expects argument of type 'long int', but argument 3 has type 'long long int' [-Wformat=]
  seq_printf(m, "fence %ld %lld\n",
                ^

In order to avoid the warnings, this changes the format strings to %llu
and adds a cast to u64, which makes it work the same way everywhere.

Signed-off-by: Arnd Bergmann 
Signed-off-by: Dave Airlie

Add virtio gpu driver.

2015-06-03T12:17:38+00:00

This patch adds a kms driver for the virtio gpu.  The xorg modesetting
driver can handle the device just fine, the framebuffer for fbcon is
there too.

Qemu patches for the host side are under review currently.

The pci version of the device comes in two variants: with and without
vga compatibility.  The former has a extra memory bar for the vga
framebuffer, the later is a pure virtio device.  The only concern for
this driver is that in the virtio-vga case we have to kick out the
firmware framebuffer.

Initial revision has only 2d support, 3d (virgl) support requires
some more work on the qemu side and will be added later.

Signed-off-by: Dave Airlie 
Signed-off-by: Gerd Hoffmann 
Acked-by: Michael S. Tsirkin