--- /dev/null
+/*
+ * 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 <drm/drmP.h>
+#include <drm/drm_fb_helper.h>
+#include "virtgpu_drv.h"
+
+#define VIRTIO_GPU_FBCON_POLL_PERIOD (HZ / 60)
+
+struct virtio_gpu_fbdev {
+ struct drm_fb_helper helper;
+ struct virtio_gpu_framebuffer vgfb;
+ struct list_head fbdev_list;
+ struct virtio_gpu_device *vgdev;
+ struct delayed_work work;
+};
+
+static int virtio_gpu_dirty_update(struct virtio_gpu_framebuffer *fb,
+ bool store, int x, int y,
+ int width, int height)
+{
+ struct drm_device *dev = fb->base.dev;
+ struct virtio_gpu_device *vgdev = dev->dev_private;
+ bool store_for_later = false;
+ int bpp = fb->base.bits_per_pixel / 8;
+ int x2, y2;
+ unsigned long flags;
+ struct virtio_gpu_object *obj = gem_to_virtio_gpu_obj(fb->obj);
+
+ if ((width <= 0) ||
+ (x + width > fb->base.width) ||
+ (y + height > fb->base.height)) {
+ DRM_DEBUG("values out of range %dx%d+%d+%d, fb %dx%d\n",
+ width, height, x, y,
+ fb->base.width, fb->base.height);
+ return -EINVAL;
+ }
+
+ /*
+ * Can be called with pretty much any context (console output
+ * path). If we are in atomic just store the dirty rect info
+ * to send out the update later.
+ *
+ * Can't test inside spin lock.
+ */
+ if (in_atomic() || store)
+ store_for_later = true;
+
+ x2 = x + width - 1;
+ y2 = y + height - 1;
+
+ spin_lock_irqsave(&fb->dirty_lock, flags);
+
+ if (fb->y1 < y)
+ y = fb->y1;
+ if (fb->y2 > y2)
+ y2 = fb->y2;
+ if (fb->x1 < x)
+ x = fb->x1;
+ if (fb->x2 > x2)
+ x2 = fb->x2;
+
+ if (store_for_later) {
+ fb->x1 = x;
+ fb->x2 = x2;
+ fb->y1 = y;
+ fb->y2 = y2;
+ spin_unlock_irqrestore(&fb->dirty_lock, flags);
+ return 0;
+ }
+
+ fb->x1 = fb->y1 = INT_MAX;
+ fb->x2 = fb->y2 = 0;
+
+ spin_unlock_irqrestore(&fb->dirty_lock, flags);
+
+ {
+ uint32_t offset;
+ uint32_t w = x2 - x + 1;
+ uint32_t h = y2 - y + 1;
+
+ offset = (y * fb->base.pitches[0]) + x * bpp;
+
+ virtio_gpu_cmd_transfer_to_host_2d(vgdev, obj->hw_res_handle,
+ offset,
+ cpu_to_le32(w),
+ cpu_to_le32(h),
+ cpu_to_le32(x),
+ cpu_to_le32(y),
+ NULL);
+
+ }
+ virtio_gpu_cmd_resource_flush(vgdev, obj->hw_res_handle,
+ x, y, x2 - x + 1, y2 - y + 1);
+ return 0;
+}
+
+int virtio_gpu_surface_dirty(struct virtio_gpu_framebuffer *vgfb,
+ struct drm_clip_rect *clips,
+ unsigned num_clips)
+{
+ struct virtio_gpu_device *vgdev = vgfb->base.dev->dev_private;
+ struct virtio_gpu_object *obj = gem_to_virtio_gpu_obj(vgfb->obj);
+ struct drm_clip_rect norect;
+ struct drm_clip_rect *clips_ptr;
+ int left, right, top, bottom;
+ int i;
+ int inc = 1;
+ if (!num_clips) {
+ num_clips = 1;
+ clips = &norect;
+ norect.x1 = norect.y1 = 0;
+ norect.x2 = vgfb->base.width;
+ norect.y2 = vgfb->base.height;
+ }
+ left = clips->x1;
+ right = clips->x2;
+ top = clips->y1;
+ bottom = clips->y2;
+
+ /* skip the first clip rect */
+ for (i = 1, clips_ptr = clips + inc;
+ i < num_clips; i++, clips_ptr += inc) {
+ left = min_t(int, left, (int)clips_ptr->x1);
+ right = max_t(int, right, (int)clips_ptr->x2);
+ top = min_t(int, top, (int)clips_ptr->y1);
+ bottom = max_t(int, bottom, (int)clips_ptr->y2);
+ }
+
+ if (obj->dumb)
+ return virtio_gpu_dirty_update(vgfb, false, left, top,
+ right - left, bottom - top);
+
+ virtio_gpu_cmd_resource_flush(vgdev, obj->hw_res_handle,
+ left, top, right - left, bottom - top);
+ return 0;
+}
+
+static void virtio_gpu_fb_dirty_work(struct work_struct *work)
+{
+ struct delayed_work *delayed_work = to_delayed_work(work);
+ struct virtio_gpu_fbdev *vfbdev =
+ container_of(delayed_work, struct virtio_gpu_fbdev, work);
+ struct virtio_gpu_framebuffer *vgfb = &vfbdev->vgfb;
+
+ virtio_gpu_dirty_update(&vfbdev->vgfb, false, vgfb->x1, vgfb->y1,
+ vgfb->x2 - vgfb->x1, vgfb->y2 - vgfb->y1);
+}
+
+static void virtio_gpu_3d_fillrect(struct fb_info *info,
+ const struct fb_fillrect *rect)
+{
+ struct virtio_gpu_fbdev *vfbdev = info->par;
+ drm_fb_helper_sys_fillrect(info, rect);
+ virtio_gpu_dirty_update(&vfbdev->vgfb, true, rect->dx, rect->dy,
+ rect->width, rect->height);
+ schedule_delayed_work(&vfbdev->work, VIRTIO_GPU_FBCON_POLL_PERIOD);
+}
+
+static void virtio_gpu_3d_copyarea(struct fb_info *info,
+ const struct fb_copyarea *area)
+{
+ struct virtio_gpu_fbdev *vfbdev = info->par;
+ drm_fb_helper_sys_copyarea(info, area);
+ virtio_gpu_dirty_update(&vfbdev->vgfb, true, area->dx, area->dy,
+ area->width, area->height);
+ schedule_delayed_work(&vfbdev->work, VIRTIO_GPU_FBCON_POLL_PERIOD);
+}
+
+static void virtio_gpu_3d_imageblit(struct fb_info *info,
+ const struct fb_image *image)
+{
+ struct virtio_gpu_fbdev *vfbdev = info->par;
+ drm_fb_helper_sys_imageblit(info, image);
+ virtio_gpu_dirty_update(&vfbdev->vgfb, true, image->dx, image->dy,
+ image->width, image->height);
+ schedule_delayed_work(&vfbdev->work, VIRTIO_GPU_FBCON_POLL_PERIOD);
+}
+
+static struct fb_ops virtio_gpufb_ops = {
+ .owner = THIS_MODULE,
+ .fb_check_var = drm_fb_helper_check_var,
+ .fb_set_par = drm_fb_helper_set_par, /* TODO: copy vmwgfx */
+ .fb_fillrect = virtio_gpu_3d_fillrect,
+ .fb_copyarea = virtio_gpu_3d_copyarea,
+ .fb_imageblit = virtio_gpu_3d_imageblit,
+ .fb_pan_display = drm_fb_helper_pan_display,
+ .fb_blank = drm_fb_helper_blank,
+ .fb_setcmap = drm_fb_helper_setcmap,
+ .fb_debug_enter = drm_fb_helper_debug_enter,
+ .fb_debug_leave = drm_fb_helper_debug_leave,
+};
+
+static int virtio_gpu_vmap_fb(struct virtio_gpu_device *vgdev,
+ struct virtio_gpu_object *obj)
+{
+ return virtio_gpu_object_kmap(obj, NULL);
+}
+
+static int virtio_gpufb_create(struct drm_fb_helper *helper,
+ struct drm_fb_helper_surface_size *sizes)
+{
+ struct virtio_gpu_fbdev *vfbdev =
+ container_of(helper, struct virtio_gpu_fbdev, helper);
+ struct drm_device *dev = helper->dev;
+ struct virtio_gpu_device *vgdev = dev->dev_private;
+ struct fb_info *info;
+ struct drm_framebuffer *fb;
+ struct drm_mode_fb_cmd2 mode_cmd = {};
+ struct virtio_gpu_object *obj;
+ uint32_t resid, format, size;
+ int ret;
+
+ mode_cmd.width = sizes->surface_width;
+ mode_cmd.height = sizes->surface_height;
+ mode_cmd.pitches[0] = mode_cmd.width * 4;
+ mode_cmd.pixel_format = drm_mode_legacy_fb_format(32, 24);
+
+ switch (mode_cmd.pixel_format) {
+#ifdef __BIG_ENDIAN
+ case DRM_FORMAT_XRGB8888:
+ format = VIRTIO_GPU_FORMAT_X8R8G8B8_UNORM;
+ break;
+ case DRM_FORMAT_ARGB8888:
+ format = VIRTIO_GPU_FORMAT_A8R8G8B8_UNORM;
+ break;
+ case DRM_FORMAT_BGRX8888:
+ format = VIRTIO_GPU_FORMAT_B8G8R8X8_UNORM;
+ break;
+ case DRM_FORMAT_BGRA8888:
+ format = VIRTIO_GPU_FORMAT_B8G8R8A8_UNORM;
+ break;
+ case DRM_FORMAT_RGBX8888:
+ format = VIRTIO_GPU_FORMAT_R8G8B8X8_UNORM;
+ break;
+ case DRM_FORMAT_RGBA8888:
+ format = VIRTIO_GPU_FORMAT_R8G8B8A8_UNORM;
+ break;
+ case DRM_FORMAT_XBGR8888:
+ format = VIRTIO_GPU_FORMAT_X8B8G8R8_UNORM;
+ break;
+ case DRM_FORMAT_ABGR8888:
+ format = VIRTIO_GPU_FORMAT_A8B8G8R8_UNORM;
+ break;
+#else
+ case DRM_FORMAT_XRGB8888:
+ format = VIRTIO_GPU_FORMAT_B8G8R8X8_UNORM;
+ break;
+ case DRM_FORMAT_ARGB8888:
+ format = VIRTIO_GPU_FORMAT_B8G8R8A8_UNORM;
+ break;
+ case DRM_FORMAT_BGRX8888:
+ format = VIRTIO_GPU_FORMAT_X8R8G8B8_UNORM;
+ break;
+ case DRM_FORMAT_BGRA8888:
+ format = VIRTIO_GPU_FORMAT_A8R8G8B8_UNORM;
+ break;
+ case DRM_FORMAT_RGBX8888:
+ format = VIRTIO_GPU_FORMAT_X8B8G8R8_UNORM;
+ break;
+ case DRM_FORMAT_RGBA8888:
+ format = VIRTIO_GPU_FORMAT_A8B8G8R8_UNORM;
+ break;
+ case DRM_FORMAT_XBGR8888:
+ format = VIRTIO_GPU_FORMAT_R8G8B8X8_UNORM;
+ break;
+ case DRM_FORMAT_ABGR8888:
+ format = VIRTIO_GPU_FORMAT_R8G8B8A8_UNORM;
+ break;
+#endif
+ default:
+ DRM_ERROR("failed to find virtio gpu format for %d\n",
+ mode_cmd.pixel_format);
+ return -EINVAL;
+ }
+
+ size = mode_cmd.pitches[0] * mode_cmd.height;
+ obj = virtio_gpu_alloc_object(dev, size, false, true);
+ if (IS_ERR(obj))
+ return PTR_ERR(obj);
+
+ virtio_gpu_resource_id_get(vgdev, &resid);
+ virtio_gpu_cmd_create_resource(vgdev, resid, format,
+ mode_cmd.width, mode_cmd.height);
+
+ ret = virtio_gpu_vmap_fb(vgdev, obj);
+ if (ret) {
+ DRM_ERROR("failed to vmap fb %d\n", ret);
+ goto err_obj_vmap;
+ }
+
+ /* attach the object to the resource */
+ ret = virtio_gpu_object_attach(vgdev, obj, resid, NULL);
+ if (ret)
+ goto err_obj_attach;
+
+ info = drm_fb_helper_alloc_fbi(helper);
+ if (IS_ERR(info)) {
+ ret = PTR_ERR(info);
+ goto err_fb_alloc;
+ }
+
+ info->par = helper;
+
+ ret = virtio_gpu_framebuffer_init(dev, &vfbdev->vgfb,
+ &mode_cmd, &obj->gem_base);
+ if (ret)
+ goto err_fb_init;
+
+ fb = &vfbdev->vgfb.base;
+
+ vfbdev->helper.fb = fb;
+
+ strcpy(info->fix.id, "virtiodrmfb");
+ info->flags = FBINFO_DEFAULT;
+ info->fbops = &virtio_gpufb_ops;
+ info->pixmap.flags = FB_PIXMAP_SYSTEM;
+
+ info->screen_base = obj->vmap;
+ info->screen_size = obj->gem_base.size;
+ drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
+ drm_fb_helper_fill_var(info, &vfbdev->helper,
+ sizes->fb_width, sizes->fb_height);
+
+ info->fix.mmio_start = 0;
+ info->fix.mmio_len = 0;
+ return 0;
+
+err_fb_init:
+ drm_fb_helper_release_fbi(helper);
+err_fb_alloc:
+ virtio_gpu_cmd_resource_inval_backing(vgdev, resid);
+err_obj_attach:
+err_obj_vmap:
+ virtio_gpu_gem_free_object(&obj->gem_base);
+ return ret;
+}
+
+static int virtio_gpu_fbdev_destroy(struct drm_device *dev,
+ struct virtio_gpu_fbdev *vgfbdev)
+{
+ struct virtio_gpu_framebuffer *vgfb = &vgfbdev->vgfb;
+
+ drm_fb_helper_unregister_fbi(&vgfbdev->helper);
+ drm_fb_helper_release_fbi(&vgfbdev->helper);
+
+ if (vgfb->obj)
+ vgfb->obj = NULL;
+ drm_fb_helper_fini(&vgfbdev->helper);
+ drm_framebuffer_cleanup(&vgfb->base);
+
+ return 0;
+}
+static struct drm_fb_helper_funcs virtio_gpu_fb_helper_funcs = {
+ .fb_probe = virtio_gpufb_create,
+};
+
+int virtio_gpu_fbdev_init(struct virtio_gpu_device *vgdev)
+{
+ struct virtio_gpu_fbdev *vgfbdev;
+ int bpp_sel = 32; /* TODO: parameter from somewhere? */
+ int ret;
+
+ vgfbdev = kzalloc(sizeof(struct virtio_gpu_fbdev), GFP_KERNEL);
+ if (!vgfbdev)
+ return -ENOMEM;
+
+ vgfbdev->vgdev = vgdev;
+ vgdev->vgfbdev = vgfbdev;
+ INIT_DELAYED_WORK(&vgfbdev->work, virtio_gpu_fb_dirty_work);
+
+ drm_fb_helper_prepare(vgdev->ddev, &vgfbdev->helper,
+ &virtio_gpu_fb_helper_funcs);
+ ret = drm_fb_helper_init(vgdev->ddev, &vgfbdev->helper,
+ vgdev->num_scanouts,
+ VIRTIO_GPUFB_CONN_LIMIT);
+ if (ret) {
+ kfree(vgfbdev);
+ return ret;
+ }
+
+ drm_fb_helper_single_add_all_connectors(&vgfbdev->helper);
+ drm_fb_helper_initial_config(&vgfbdev->helper, bpp_sel);
+ return 0;
+}
+
+void virtio_gpu_fbdev_fini(struct virtio_gpu_device *vgdev)
+{
+ if (!vgdev->vgfbdev)
+ return;
+
+ virtio_gpu_fbdev_destroy(vgdev->ddev, vgdev->vgfbdev);
+ kfree(vgdev->vgfbdev);
+ vgdev->vgfbdev = NULL;
+}
Code Review / kvmfornfv.git / blobdiff