/* * Copyright (C) 2015 Red Hat, Inc. * All Rights Reserved. * * Authors: * Dave Airlie * Alon Levy * * 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 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 HOLDER(S) OR AUTHOR(S) 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 "virtgpu_drv.h" #include #include #define XRES_MIN 32 #define YRES_MIN 32 #define XRES_DEF 1024 #define YRES_DEF 768 #define XRES_MAX 8192 #define YRES_MAX 8192 static const struct drm_crtc_funcs virtio_gpu_crtc_funcs = { .set_config = drm_atomic_helper_set_config, .destroy = drm_crtc_cleanup, .page_flip = drm_atomic_helper_page_flip, .reset = drm_atomic_helper_crtc_reset, .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state, .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, }; static void virtio_gpu_user_framebuffer_destroy(struct drm_framebuffer *fb) { struct virtio_gpu_framebuffer *virtio_gpu_fb = to_virtio_gpu_framebuffer(fb); drm_gem_object_unreference_unlocked(virtio_gpu_fb->obj); drm_framebuffer_cleanup(fb); kfree(virtio_gpu_fb); } static int virtio_gpu_framebuffer_surface_dirty(struct drm_framebuffer *fb, struct drm_file *file_priv, unsigned flags, unsigned color, struct drm_clip_rect *clips, unsigned num_clips) { struct virtio_gpu_framebuffer *virtio_gpu_fb = to_virtio_gpu_framebuffer(fb); return virtio_gpu_surface_dirty(virtio_gpu_fb, clips, num_clips); } static const struct drm_framebuffer_funcs virtio_gpu_fb_funcs = { .destroy = virtio_gpu_user_framebuffer_destroy, .dirty = virtio_gpu_framebuffer_surface_dirty, }; int virtio_gpu_framebuffer_init(struct drm_device *dev, struct virtio_gpu_framebuffer *vgfb, const struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object *obj) { int ret; struct virtio_gpu_object *bo; vgfb->obj = obj; bo = gem_to_virtio_gpu_obj(obj); drm_helper_mode_fill_fb_struct(dev, &vgfb->base, mode_cmd); ret = drm_framebuffer_init(dev, &vgfb->base, &virtio_gpu_fb_funcs); if (ret) { vgfb->obj = NULL; return ret; } spin_lock_init(&vgfb->dirty_lock); vgfb->x1 = vgfb->y1 = INT_MAX; vgfb->x2 = vgfb->y2 = 0; return 0; } static void virtio_gpu_crtc_mode_set_nofb(struct drm_crtc *crtc) { struct drm_device *dev = crtc->dev; struct virtio_gpu_device *vgdev = dev->dev_private; struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(crtc); virtio_gpu_cmd_set_scanout(vgdev, output->index, 0, crtc->mode.hdisplay, crtc->mode.vdisplay, 0, 0); } static void virtio_gpu_crtc_enable(struct drm_crtc *crtc) { } static void virtio_gpu_crtc_disable(struct drm_crtc *crtc) { struct drm_device *dev = crtc->dev; struct virtio_gpu_device *vgdev = dev->dev_private; struct virtio_gpu_output *output = drm_crtc_to_virtio_gpu_output(crtc); virtio_gpu_cmd_set_scanout(vgdev, output->index, 0, 0, 0, 0, 0); } static int virtio_gpu_crtc_atomic_check(struct drm_crtc *crtc, struct drm_crtc_state *state) { return 0; } static void virtio_gpu_crtc_atomic_flush(struct drm_crtc *crtc, struct drm_crtc_state *old_state) { unsigned long flags; spin_lock_irqsave(&crtc->dev->event_lock, flags); if (crtc->state->event) drm_crtc_send_vblank_event(crtc, crtc->state->event); crtc->state->event = NULL; spin_unlock_irqrestore(&crtc->dev->event_lock, flags); } static const struct drm_crtc_helper_funcs virtio_gpu_crtc_helper_funcs = { .enable = virtio_gpu_crtc_enable, .disable = virtio_gpu_crtc_disable, .mode_set_nofb = virtio_gpu_crtc_mode_set_nofb, .atomic_check = virtio_gpu_crtc_atomic_check, .atomic_flush = virtio_gpu_crtc_atomic_flush, }; static void virtio_gpu_enc_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode) { } static void virtio_gpu_enc_enable(struct drm_encoder *encoder) { } static void virtio_gpu_enc_disable(struct drm_encoder *encoder) { } static int virtio_gpu_conn_get_modes(struct drm_connector *connector) { struct virtio_gpu_output *output = drm_connector_to_virtio_gpu_output(connector); struct drm_display_mode *mode = NULL; int count, width, height; width = le32_to_cpu(output->info.r.width); height = le32_to_cpu(output->info.r.height); count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX); if (width == 0 || height == 0) { width = XRES_DEF; height = YRES_DEF; drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF); } else { DRM_DEBUG("add mode: %dx%d\n", width, height); mode = drm_cvt_mode(connector->dev, width, height, 60, false, false, false); mode->type |= DRM_MODE_TYPE_PREFERRED; drm_mode_probed_add(connector, mode); count++; } return count; } static int virtio_gpu_conn_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) { struct virtio_gpu_output *output = drm_connector_to_virtio_gpu_output(connector); int width, height; width = le32_to_cpu(output->info.r.width); height = le32_to_cpu(output->info.r.height); if (!(mode->type & DRM_MODE_TYPE_PREFERRED)) return MODE_OK; if (mode->hdisplay == XRES_DEF && mode->vdisplay == YRES_DEF) return MODE_OK; if (mode->hdisplay <= width && mode->hdisplay >= width - 16 && mode->vdisplay <= height && mode->vdisplay >= height - 16) return MODE_OK; DRM_DEBUG("del mode: %dx%d\n", mode->hdisplay, mode->vdisplay); return MODE_BAD; } static const struct drm_encoder_helper_funcs virtio_gpu_enc_helper_funcs = { .mode_set = virtio_gpu_enc_mode_set, .enable = virtio_gpu_enc_enable, .disable = virtio_gpu_enc_disable, }; static const struct drm_connector_helper_funcs virtio_gpu_conn_helper_funcs = { .get_modes = virtio_gpu_conn_get_modes, .mode_valid = virtio_gpu_conn_mode_valid, }; static enum drm_connector_status virtio_gpu_conn_detect( struct drm_connector *connector, bool force) { struct virtio_gpu_output *output = drm_connector_to_virtio_gpu_output(connector); if (output->info.enabled) return connector_status_connected; else return connector_status_disconnected; } static void virtio_gpu_conn_destroy(struct drm_connector *connector) { struct virtio_gpu_output *virtio_gpu_output = drm_connector_to_virtio_gpu_output(connector); drm_connector_unregister(connector); drm_connector_cleanup(connector); kfree(virtio_gpu_output); } static const struct drm_connector_funcs virtio_gpu_connector_funcs = { .dpms = drm_atomic_helper_connector_dpms, .detect = virtio_gpu_conn_detect, .fill_modes = drm_helper_probe_single_connector_modes, .destroy = virtio_gpu_conn_destroy, .reset = drm_atomic_helper_connector_reset, .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, }; static const struct drm_encoder_funcs virtio_gpu_enc_funcs = { .destroy = drm_encoder_cleanup, }; static int vgdev_output_init(struct virtio_gpu_device *vgdev, int index) { struct drm_device *dev = vgdev->ddev; struct virtio_gpu_output *output = vgdev->outputs + index; struct drm_connector *connector = &output->conn; struct drm_encoder *encoder = &output->enc; struct drm_crtc *crtc = &output->crtc; struct drm_plane *primary, *cursor; output->index = index; if (index == 0) { output->info.enabled = cpu_to_le32(true); output->info.r.width = cpu_to_le32(XRES_DEF); output->info.r.height = cpu_to_le32(YRES_DEF); } primary = virtio_gpu_plane_init(vgdev, DRM_PLANE_TYPE_PRIMARY, index); if (IS_ERR(primary)) return PTR_ERR(primary); cursor = virtio_gpu_plane_init(vgdev, DRM_PLANE_TYPE_CURSOR, index); if (IS_ERR(cursor)) return PTR_ERR(cursor); drm_crtc_init_with_planes(dev, crtc, primary, cursor, &virtio_gpu_crtc_funcs, NULL); drm_crtc_helper_add(crtc, &virtio_gpu_crtc_helper_funcs); primary->crtc = crtc; cursor->crtc = crtc; drm_connector_init(dev, connector, &virtio_gpu_connector_funcs, DRM_MODE_CONNECTOR_VIRTUAL); drm_connector_helper_add(connector, &virtio_gpu_conn_helper_funcs); drm_encoder_init(dev, encoder, &virtio_gpu_enc_funcs, DRM_MODE_ENCODER_VIRTUAL, NULL); drm_encoder_helper_add(encoder, &virtio_gpu_enc_helper_funcs); encoder->possible_crtcs = 1 << index; drm_mode_connector_attach_encoder(connector, encoder); drm_connector_register(connector); return 0; } static struct drm_framebuffer * virtio_gpu_user_framebuffer_create(struct drm_device *dev, struct drm_file *file_priv, const struct drm_mode_fb_cmd2 *mode_cmd) { struct drm_gem_object *obj = NULL; struct virtio_gpu_framebuffer *virtio_gpu_fb; int ret; /* lookup object associated with res handle */ obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[0]); if (!obj) return ERR_PTR(-EINVAL); virtio_gpu_fb = kzalloc(sizeof(*virtio_gpu_fb), GFP_KERNEL); if (virtio_gpu_fb == NULL) return ERR_PTR(-ENOMEM); ret = virtio_gpu_framebuffer_init(dev, virtio_gpu_fb, mode_cmd, obj); if (ret) { kfree(virtio_gpu_fb); drm_gem_object_unreference_unlocked(obj); return NULL; } return &virtio_gpu_fb->base; } static void vgdev_atomic_commit_tail(struct drm_atomic_state *state) { struct drm_device *dev = state->dev; drm_atomic_helper_commit_modeset_disables(dev, state); drm_atomic_helper_commit_modeset_enables(dev, state); drm_atomic_helper_commit_planes(dev, state, 0); drm_atomic_helper_commit_hw_done(state); drm_atomic_helper_wait_for_vblanks(dev, state); drm_atomic_helper_cleanup_planes(dev, state); } static struct drm_mode_config_helper_funcs virtio_mode_config_helpers = { .atomic_commit_tail = vgdev_atomic_commit_tail, }; static const struct drm_mode_config_funcs virtio_gpu_mode_funcs = { .fb_create = virtio_gpu_user_framebuffer_create, .atomic_check = drm_atomic_helper_check, .atomic_commit = drm_atomic_helper_commit, }; int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev) { int i; drm_mode_config_init(vgdev->ddev); vgdev->ddev->mode_config.funcs = &virtio_gpu_mode_funcs; vgdev->ddev->mode_config.helper_private = &virtio_mode_config_helpers; /* modes will be validated against the framebuffer size */ vgdev->ddev->mode_config.min_width = XRES_MIN; vgdev->ddev->mode_config.min_height = YRES_MIN; vgdev->ddev->mode_config.max_width = XRES_MAX; vgdev->ddev->mode_config.max_height = YRES_MAX; for (i = 0 ; i < vgdev->num_scanouts; ++i) vgdev_output_init(vgdev, i); drm_mode_config_reset(vgdev->ddev); return 0; } void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev) { virtio_gpu_fbdev_fini(vgdev); drm_mode_config_cleanup(vgdev->ddev); }