Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 204 insertions, 0 deletions

diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.c b/drivers/gpu/drm/virtio/virtgpu_drv.c
new file mode 100644
index 000000000..0035affc3
--- /dev/null
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.c
@@ -0,0 +1,204 @@
+/*
+ * Copyright (C) 2015 Red Hat, Inc.
+ * All Rights Reserved.
+ *
+ * Authors:
+ *    Dave Airlie <airlied@redhat.com>
+ *    Gerd Hoffmann <kraxel@redhat.com>
+ *
+ * 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
+ * VA LINUX SYSTEMS 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/module.h>
+#include <linux/pci.h>
+#include <linux/poll.h>
+#include <linux/wait.h>
+
+#include <drm/drm.h>
+#include <drm/drm_aperture.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_file.h>
+
+#include "virtgpu_drv.h"
+
+static const struct drm_driver driver;
+
+static int virtio_gpu_modeset = -1;
+
+MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
+module_param_named(modeset, virtio_gpu_modeset, int, 0400);
+
+static int virtio_gpu_pci_quirk(struct drm_device *dev)
+{
+	struct pci_dev *pdev = to_pci_dev(dev->dev);
+	const char *pname = dev_name(&pdev->dev);
+	bool vga = (pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA;
+	int ret;
+
+	DRM_INFO("pci: %s detected at %s\n",
+		 vga ? "virtio-vga" : "virtio-gpu-pci",
+		 pname);
+	if (vga) {
+		ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &driver);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int virtio_gpu_probe(struct virtio_device *vdev)
+{
+	struct drm_device *dev;
+	int ret;
+
+	if (drm_firmware_drivers_only() && virtio_gpu_modeset == -1)
+		return -EINVAL;
+
+	if (virtio_gpu_modeset == 0)
+		return -EINVAL;
+
+	/*
+	 * The virtio-gpu device is a virtual device that doesn't have DMA
+	 * ops assigned to it, nor DMA mask set and etc. Its parent device
+	 * is actual GPU device we want to use it for the DRM's device in
+	 * order to benefit from using generic DRM APIs.
+	 */
+	dev = drm_dev_alloc(&driver, vdev->dev.parent);
+	if (IS_ERR(dev))
+		return PTR_ERR(dev);
+	vdev->priv = dev;
+
+	if (dev_is_pci(vdev->dev.parent)) {
+		ret = virtio_gpu_pci_quirk(dev);
+		if (ret)
+			goto err_free;
+	}
+
+	ret = virtio_gpu_init(vdev, dev);
+	if (ret)
+		goto err_free;
+
+	ret = drm_dev_register(dev, 0);
+	if (ret)
+		goto err_deinit;
+
+	drm_fbdev_generic_setup(vdev->priv, 32);
+	return 0;
+
+err_deinit:
+	virtio_gpu_deinit(dev);
+err_free:
+	drm_dev_put(dev);
+	return ret;
+}
+
+static void virtio_gpu_remove(struct virtio_device *vdev)
+{
+	struct drm_device *dev = vdev->priv;
+
+	drm_dev_unplug(dev);
+	drm_atomic_helper_shutdown(dev);
+	virtio_gpu_deinit(dev);
+	drm_dev_put(dev);
+}
+
+static void virtio_gpu_config_changed(struct virtio_device *vdev)
+{
+	struct drm_device *dev = vdev->priv;
+	struct virtio_gpu_device *vgdev = dev->dev_private;
+
+	schedule_work(&vgdev->config_changed_work);
+}
+
+static struct virtio_device_id id_table[] = {
+	{ VIRTIO_ID_GPU, VIRTIO_DEV_ANY_ID },
+	{ 0 },
+};
+
+static unsigned int features[] = {
+#ifdef __LITTLE_ENDIAN
+	/*
+	 * Gallium command stream send by virgl is native endian.
+	 * Because of that we only support little endian guests on
+	 * little endian hosts.
+	 */
+	VIRTIO_GPU_F_VIRGL,
+#endif
+	VIRTIO_GPU_F_EDID,
+	VIRTIO_GPU_F_RESOURCE_UUID,
+	VIRTIO_GPU_F_RESOURCE_BLOB,
+	VIRTIO_GPU_F_CONTEXT_INIT,
+};
+static struct virtio_driver virtio_gpu_driver = {
+	.feature_table = features,
+	.feature_table_size = ARRAY_SIZE(features),
+	.driver.name = KBUILD_MODNAME,
+	.driver.owner = THIS_MODULE,
+	.id_table = id_table,
+	.probe = virtio_gpu_probe,
+	.remove = virtio_gpu_remove,
+	.config_changed = virtio_gpu_config_changed
+};
+
+module_virtio_driver(virtio_gpu_driver);
+
+MODULE_DEVICE_TABLE(virtio, id_table);
+MODULE_DESCRIPTION("Virtio GPU driver");
+MODULE_LICENSE("GPL and additional rights");
+MODULE_AUTHOR("Dave Airlie <airlied@redhat.com>");
+MODULE_AUTHOR("Gerd Hoffmann <kraxel@redhat.com>");
+MODULE_AUTHOR("Alon Levy");
+
+DEFINE_DRM_GEM_FOPS(virtio_gpu_driver_fops);
+
+static const struct drm_driver driver = {
+	.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_RENDER | DRIVER_ATOMIC,
+	.open = virtio_gpu_driver_open,
+	.postclose = virtio_gpu_driver_postclose,
+
+	.dumb_create = virtio_gpu_mode_dumb_create,
+	.dumb_map_offset = virtio_gpu_mode_dumb_mmap,
+
+#if defined(CONFIG_DEBUG_FS)
+	.debugfs_init = virtio_gpu_debugfs_init,
+#endif
+	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+	.gem_prime_mmap = drm_gem_prime_mmap,
+	.gem_prime_import = virtgpu_gem_prime_import,
+	.gem_prime_import_sg_table = virtgpu_gem_prime_import_sg_table,
+
+	.gem_create_object = virtio_gpu_create_object,
+	.fops = &virtio_gpu_driver_fops,
+
+	.ioctls = virtio_gpu_ioctls,
+	.num_ioctls = DRM_VIRTIO_NUM_IOCTLS,
+
+	.name = DRIVER_NAME,
+	.desc = DRIVER_DESC,
+	.date = DRIVER_DATE,
+	.major = DRIVER_MAJOR,
+	.minor = DRIVER_MINOR,
+	.patchlevel = DRIVER_PATCHLEVEL,
+
+	.release = virtio_gpu_release,
+};