mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-28 07:04:00 +08:00
18e51064c4
This is a leftover from the drm_bus days, where we've had a bus-specific device type for every bus type in drm_device. Except for pci (which we can't remove because dri1 drivers) this is all gone. And the virt driver also doesn't really need it, dev_to_virtio works perfectly fine. Cc: David Airlie <airlied@linux.ie> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: virtualization@lists.linux-foundation.org Reviewed-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170524145212.27837-3-daniel.vetter@ffwll.ch
91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
/*
|
|
* Copyright (C) 2015 Red Hat, Inc.
|
|
* All Rights Reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the
|
|
* next paragraph) shall be included in all copies or substantial
|
|
* portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
|
|
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#include <linux/pci.h>
|
|
#include <drm/drm_fb_helper.h>
|
|
|
|
#include "virtgpu_drv.h"
|
|
|
|
static void virtio_pci_kick_out_firmware_fb(struct pci_dev *pci_dev)
|
|
{
|
|
struct apertures_struct *ap;
|
|
bool primary;
|
|
|
|
ap = alloc_apertures(1);
|
|
if (!ap)
|
|
return;
|
|
|
|
ap->ranges[0].base = pci_resource_start(pci_dev, 0);
|
|
ap->ranges[0].size = pci_resource_len(pci_dev, 0);
|
|
|
|
primary = pci_dev->resource[PCI_ROM_RESOURCE].flags
|
|
& IORESOURCE_ROM_SHADOW;
|
|
|
|
drm_fb_helper_remove_conflicting_framebuffers(ap, "virtiodrmfb", primary);
|
|
|
|
kfree(ap);
|
|
}
|
|
|
|
int drm_virtio_init(struct drm_driver *driver, struct virtio_device *vdev)
|
|
{
|
|
struct drm_device *dev;
|
|
int ret;
|
|
|
|
dev = drm_dev_alloc(driver, &vdev->dev);
|
|
if (IS_ERR(dev))
|
|
return PTR_ERR(dev);
|
|
vdev->priv = dev;
|
|
|
|
if (strcmp(vdev->dev.parent->bus->name, "pci") == 0) {
|
|
struct pci_dev *pdev = to_pci_dev(vdev->dev.parent);
|
|
const char *pname = dev_name(&pdev->dev);
|
|
bool vga = (pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA;
|
|
char unique[20];
|
|
|
|
DRM_INFO("pci: %s detected at %s\n",
|
|
vga ? "virtio-vga" : "virtio-gpu-pci",
|
|
pname);
|
|
dev->pdev = pdev;
|
|
if (vga)
|
|
virtio_pci_kick_out_firmware_fb(pdev);
|
|
|
|
snprintf(unique, sizeof(unique), "pci:%s", pname);
|
|
ret = drm_dev_set_unique(dev, unique);
|
|
if (ret)
|
|
goto err_free;
|
|
|
|
}
|
|
|
|
ret = drm_dev_register(dev, 0);
|
|
if (ret)
|
|
goto err_free;
|
|
|
|
return 0;
|
|
|
|
err_free:
|
|
drm_dev_unref(dev);
|
|
return ret;
|
|
}
|