// SPDX-License-Identifier: GPL-2.0 OR MIT /************************************************************************** * * Copyright 2009-2023 VMware, Inc., Palo Alto, CA., USA * * 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, sub license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDERS, AUTHORS 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 "vmwgfx_bo.h" #include "vmwgfx_kms.h" #include "vmwgfx_vkms.h" #include #include #include #define vmw_crtc_to_ldu(x) \ container_of(x, struct vmw_legacy_display_unit, base.crtc) #define vmw_encoder_to_ldu(x) \ container_of(x, struct vmw_legacy_display_unit, base.encoder) #define vmw_connector_to_ldu(x) \ container_of(x, struct vmw_legacy_display_unit, base.connector) struct vmw_legacy_display { struct list_head active; unsigned num_active; unsigned last_num_active; struct vmw_framebuffer *fb; }; /* * Display unit using the legacy register interface. */ struct vmw_legacy_display_unit { struct vmw_display_unit base; struct list_head active; }; static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu) { list_del_init(&ldu->active); vmw_du_cleanup(&ldu->base); kfree(ldu); } /* * Legacy Display Unit CRTC functions */ static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc) { vmw_ldu_destroy(vmw_crtc_to_ldu(crtc)); } static int vmw_ldu_commit_list(struct vmw_private *dev_priv) { struct vmw_legacy_display *lds = dev_priv->ldu_priv; struct vmw_legacy_display_unit *entry; struct drm_framebuffer *fb = NULL; struct drm_crtc *crtc = NULL; int i; /* If there is no display topology the host just assumes * that the guest will set the same layout as the host. */ if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) { int w = 0, h = 0; list_for_each_entry(entry, &lds->active, active) { crtc = &entry->base.crtc; w = max(w, crtc->x + crtc->mode.hdisplay); h = max(h, crtc->y + crtc->mode.vdisplay); } if (crtc == NULL) return 0; fb = crtc->primary->state->fb; return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0], fb->format->cpp[0] * 8, fb->format->depth); } if (!list_empty(&lds->active)) { entry = list_entry(lds->active.next, typeof(*entry), active); fb = entry->base.crtc.primary->state->fb; vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitches[0], fb->format->cpp[0] * 8, fb->format->depth); } /* Make sure we always show something. */ vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS, lds->num_active ? lds->num_active : 1); i = 0; list_for_each_entry(entry, &lds->active, active) { crtc = &entry->base.crtc; vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i); vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i); vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x); vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y); vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay); vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay); i++; } BUG_ON(i != lds->num_active); lds->last_num_active = lds->num_active; return 0; } /* * Pin the buffer in a location suitable for access by the * display system. */ static int vmw_ldu_fb_pin(struct vmw_framebuffer *vfb) { struct vmw_private *dev_priv = vmw_priv(vfb->base.dev); struct vmw_bo *buf; int ret; buf = vfb->bo ? vmw_framebuffer_to_vfbd(&vfb->base)->buffer : vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.guest_memory_bo; if (!buf) return 0; WARN_ON(dev_priv->active_display_unit != vmw_du_legacy); if (dev_priv->active_display_unit == vmw_du_legacy) { vmw_overlay_pause_all(dev_priv); ret = vmw_bo_pin_in_start_of_vram(dev_priv, buf, false); vmw_overlay_resume_all(dev_priv); } else ret = -EINVAL; return ret; } static int vmw_ldu_fb_unpin(struct vmw_framebuffer *vfb) { struct vmw_private *dev_priv = vmw_priv(vfb->base.dev); struct vmw_bo *buf; buf = vfb->bo ? vmw_framebuffer_to_vfbd(&vfb->base)->buffer : vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.guest_memory_bo; if (WARN_ON(!buf)) return 0; return vmw_bo_unpin(dev_priv, buf, false); } static int vmw_ldu_del_active(struct vmw_private *vmw_priv, struct vmw_legacy_display_unit *ldu) { struct vmw_legacy_display *ld = vmw_priv->ldu_priv; if (list_empty(&ldu->active)) return 0; /* Must init otherwise list_empty(&ldu->active) will not work. */ list_del_init(&ldu->active); if (--(ld->num_active) == 0) { BUG_ON(!ld->fb); WARN_ON(vmw_ldu_fb_unpin(ld->fb)); ld->fb = NULL; } return 0; } static int vmw_ldu_add_active(struct vmw_private *vmw_priv, struct vmw_legacy_display_unit *ldu, struct vmw_framebuffer *vfb) { struct vmw_legacy_display *ld = vmw_priv->ldu_priv; struct vmw_legacy_display_unit *entry; struct list_head *at; BUG_ON(!ld->num_active && ld->fb); if (vfb != ld->fb) { if (ld->fb) WARN_ON(vmw_ldu_fb_unpin(ld->fb)); vmw_svga_enable(vmw_priv); WARN_ON(vmw_ldu_fb_pin(vfb)); ld->fb = vfb; } if (!list_empty(&ldu->active)) return 0; at = &ld->active; list_for_each_entry(entry, &ld->active, active) { if (entry->base.unit > ldu->base.unit) break; at = &entry->active; } list_add(&ldu->active, at); ld->num_active++; return 0; } /** * vmw_ldu_crtc_mode_set_nofb - Enable svga * * @crtc: CRTC associated with the new screen * * For LDU, just enable the svga */ static void vmw_ldu_crtc_mode_set_nofb(struct drm_crtc *crtc) { } static const struct drm_crtc_funcs vmw_legacy_crtc_funcs = { .gamma_set = vmw_du_crtc_gamma_set, .destroy = vmw_ldu_crtc_destroy, .reset = vmw_du_crtc_reset, .atomic_duplicate_state = vmw_du_crtc_duplicate_state, .atomic_destroy_state = vmw_du_crtc_destroy_state, .set_config = drm_atomic_helper_set_config, .page_flip = drm_atomic_helper_page_flip, .enable_vblank = vmw_vkms_enable_vblank, .disable_vblank = vmw_vkms_disable_vblank, .get_vblank_timestamp = vmw_vkms_get_vblank_timestamp, }; /* * Legacy Display Unit encoder functions */ static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder) { vmw_ldu_destroy(vmw_encoder_to_ldu(encoder)); } static const struct drm_encoder_funcs vmw_legacy_encoder_funcs = { .destroy = vmw_ldu_encoder_destroy, }; /* * Legacy Display Unit connector functions */ static void vmw_ldu_connector_destroy(struct drm_connector *connector) { vmw_ldu_destroy(vmw_connector_to_ldu(connector)); } static const struct drm_connector_funcs vmw_legacy_connector_funcs = { .dpms = vmw_du_connector_dpms, .detect = vmw_du_connector_detect, .fill_modes = drm_helper_probe_single_connector_modes, .destroy = vmw_ldu_connector_destroy, .reset = vmw_du_connector_reset, .atomic_duplicate_state = vmw_du_connector_duplicate_state, .atomic_destroy_state = vmw_du_connector_destroy_state, }; static const struct drm_connector_helper_funcs vmw_ldu_connector_helper_funcs = { .get_modes = vmw_connector_get_modes, .mode_valid = vmw_connector_mode_valid }; static int vmw_kms_ldu_do_bo_dirty(struct vmw_private *dev_priv, struct vmw_framebuffer *framebuffer, unsigned int flags, unsigned int color, struct drm_mode_rect *clips, unsigned int num_clips); /* * Legacy Display Plane Functions */ static void vmw_ldu_primary_plane_atomic_update(struct drm_plane *plane, struct drm_atomic_state *state) { struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, plane); struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane); struct vmw_private *dev_priv; struct vmw_legacy_display_unit *ldu; struct vmw_framebuffer *vfb; struct drm_framebuffer *fb; struct drm_crtc *crtc = new_state->crtc ?: old_state->crtc; ldu = vmw_crtc_to_ldu(crtc); dev_priv = vmw_priv(plane->dev); fb = new_state->fb; vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL; if (vfb) vmw_ldu_add_active(dev_priv, ldu, vfb); else vmw_ldu_del_active(dev_priv, ldu); vmw_ldu_commit_list(dev_priv); if (vfb && vmw_cmd_supported(dev_priv)) { struct drm_mode_rect fb_rect = { .x1 = 0, .y1 = 0, .x2 = vfb->base.width, .y2 = vfb->base.height }; struct drm_mode_rect *damage_rects = drm_plane_get_damage_clips(new_state); u32 rect_count = drm_plane_get_damage_clips_count(new_state); int ret; if (!damage_rects) { damage_rects = &fb_rect; rect_count = 1; } ret = vmw_kms_ldu_do_bo_dirty(dev_priv, vfb, 0, 0, damage_rects, rect_count); drm_WARN_ONCE(plane->dev, ret, "vmw_kms_ldu_do_bo_dirty failed with: ret=%d\n", ret); vmw_cmd_flush(dev_priv, false); } } static const struct drm_plane_funcs vmw_ldu_plane_funcs = { .update_plane = drm_atomic_helper_update_plane, .disable_plane = drm_atomic_helper_disable_plane, .destroy = vmw_du_primary_plane_destroy, .reset = vmw_du_plane_reset, .atomic_duplicate_state = vmw_du_plane_duplicate_state, .atomic_destroy_state = vmw_du_plane_destroy_state, }; static const struct drm_plane_funcs vmw_ldu_cursor_funcs = { .update_plane = drm_atomic_helper_update_plane, .disable_plane = drm_atomic_helper_disable_plane, .destroy = vmw_du_cursor_plane_destroy, .reset = vmw_du_plane_reset, .atomic_duplicate_state = vmw_du_plane_duplicate_state, .atomic_destroy_state = vmw_du_plane_destroy_state, }; /* * Atomic Helpers */ static const struct drm_plane_helper_funcs vmw_ldu_cursor_plane_helper_funcs = { .atomic_check = vmw_du_cursor_plane_atomic_check, .atomic_update = vmw_du_cursor_plane_atomic_update, .prepare_fb = vmw_du_cursor_plane_prepare_fb, .cleanup_fb = vmw_du_cursor_plane_cleanup_fb, }; static const struct drm_plane_helper_funcs vmw_ldu_primary_plane_helper_funcs = { .atomic_check = vmw_du_primary_plane_atomic_check, .atomic_update = vmw_ldu_primary_plane_atomic_update, }; static const struct drm_crtc_helper_funcs vmw_ldu_crtc_helper_funcs = { .mode_set_nofb = vmw_ldu_crtc_mode_set_nofb, .atomic_check = vmw_du_crtc_atomic_check, .atomic_begin = vmw_du_crtc_atomic_begin, .atomic_flush = vmw_vkms_crtc_atomic_flush, .atomic_enable = vmw_vkms_crtc_atomic_enable, .atomic_disable = vmw_vkms_crtc_atomic_disable, }; static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit) { struct vmw_legacy_display_unit *ldu; struct drm_device *dev = &dev_priv->drm; struct drm_connector *connector; struct drm_encoder *encoder; struct drm_plane *primary; struct vmw_cursor_plane *cursor; struct drm_crtc *crtc; int ret; ldu = kzalloc(sizeof(*ldu), GFP_KERNEL); if (!ldu) return -ENOMEM; ldu->base.unit = unit; crtc = &ldu->base.crtc; encoder = &ldu->base.encoder; connector = &ldu->base.connector; primary = &ldu->base.primary; cursor = &ldu->base.cursor; INIT_LIST_HEAD(&ldu->active); ldu->base.pref_active = (unit == 0); ldu->base.pref_width = dev_priv->initial_width; ldu->base.pref_height = dev_priv->initial_height; /* * Remove this after enabling atomic because property values can * only exist in a state object */ ldu->base.is_implicit = true; /* Initialize primary plane */ ret = drm_universal_plane_init(dev, primary, 0, &vmw_ldu_plane_funcs, vmw_primary_plane_formats, ARRAY_SIZE(vmw_primary_plane_formats), NULL, DRM_PLANE_TYPE_PRIMARY, NULL); if (ret) { DRM_ERROR("Failed to initialize primary plane"); goto err_free; } drm_plane_helper_add(primary, &vmw_ldu_primary_plane_helper_funcs); /* * We're going to be using traces and software cursors */ if (vmw_cmd_supported(dev_priv)) { /* Initialize cursor plane */ ret = drm_universal_plane_init(dev, &cursor->base, 0, &vmw_ldu_cursor_funcs, vmw_cursor_plane_formats, ARRAY_SIZE(vmw_cursor_plane_formats), NULL, DRM_PLANE_TYPE_CURSOR, NULL); if (ret) { DRM_ERROR("Failed to initialize cursor plane"); drm_plane_cleanup(&ldu->base.primary); goto err_free; } drm_plane_helper_add(&cursor->base, &vmw_ldu_cursor_plane_helper_funcs); } ret = drm_connector_init(dev, connector, &vmw_legacy_connector_funcs, DRM_MODE_CONNECTOR_VIRTUAL); if (ret) { DRM_ERROR("Failed to initialize connector\n"); goto err_free; } drm_connector_helper_add(connector, &vmw_ldu_connector_helper_funcs); connector->status = vmw_du_connector_detect(connector, true); ret = drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs, DRM_MODE_ENCODER_VIRTUAL, NULL); if (ret) { DRM_ERROR("Failed to initialize encoder\n"); goto err_free_connector; } (void) drm_connector_attach_encoder(connector, encoder); encoder->possible_crtcs = (1 << unit); encoder->possible_clones = 0; ret = drm_connector_register(connector); if (ret) { DRM_ERROR("Failed to register connector\n"); goto err_free_encoder; } ret = drm_crtc_init_with_planes(dev, crtc, primary, vmw_cmd_supported(dev_priv) ? &cursor->base : NULL, &vmw_legacy_crtc_funcs, NULL); if (ret) { DRM_ERROR("Failed to initialize CRTC\n"); goto err_free_unregister; } drm_crtc_helper_add(crtc, &vmw_ldu_crtc_helper_funcs); drm_mode_crtc_set_gamma_size(crtc, 256); drm_object_attach_property(&connector->base, dev_priv->hotplug_mode_update_property, 1); drm_object_attach_property(&connector->base, dev->mode_config.suggested_x_property, 0); drm_object_attach_property(&connector->base, dev->mode_config.suggested_y_property, 0); if (dev_priv->implicit_placement_property) drm_object_attach_property (&connector->base, dev_priv->implicit_placement_property, 1); vmw_du_init(&ldu->base); return 0; err_free_unregister: drm_connector_unregister(connector); err_free_encoder: drm_encoder_cleanup(encoder); err_free_connector: drm_connector_cleanup(connector); err_free: kfree(ldu); return ret; } int vmw_kms_ldu_init_display(struct vmw_private *dev_priv) { struct drm_device *dev = &dev_priv->drm; int i, ret; int num_display_units = (dev_priv->capabilities & SVGA_CAP_MULTIMON) ? VMWGFX_NUM_DISPLAY_UNITS : 1; if (unlikely(dev_priv->ldu_priv)) { return -EINVAL; } dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL); if (!dev_priv->ldu_priv) return -ENOMEM; INIT_LIST_HEAD(&dev_priv->ldu_priv->active); dev_priv->ldu_priv->num_active = 0; dev_priv->ldu_priv->last_num_active = 0; dev_priv->ldu_priv->fb = NULL; vmw_kms_create_implicit_placement_property(dev_priv); for (i = 0; i < num_display_units; ++i) { ret = vmw_ldu_init(dev_priv, i); if (ret != 0) goto err_free; } dev_priv->active_display_unit = vmw_du_legacy; drm_mode_config_reset(dev); return 0; err_free: kfree(dev_priv->ldu_priv); dev_priv->ldu_priv = NULL; return ret; } int vmw_kms_ldu_close_display(struct vmw_private *dev_priv) { if (!dev_priv->ldu_priv) return -ENOSYS; BUG_ON(!list_empty(&dev_priv->ldu_priv->active)); kfree(dev_priv->ldu_priv); return 0; } static int vmw_kms_ldu_do_bo_dirty(struct vmw_private *dev_priv, struct vmw_framebuffer *framebuffer, unsigned int flags, unsigned int color, struct drm_mode_rect *clips, unsigned int num_clips) { size_t fifo_size; int i; struct { uint32_t header; SVGAFifoCmdUpdate body; } *cmd; fifo_size = sizeof(*cmd) * num_clips; cmd = VMW_CMD_RESERVE(dev_priv, fifo_size); if (unlikely(cmd == NULL)) return -ENOMEM; memset(cmd, 0, fifo_size); for (i = 0; i < num_clips; i++, clips++) { cmd[i].header = SVGA_CMD_UPDATE; cmd[i].body.x = clips->x1; cmd[i].body.y = clips->y1; cmd[i].body.width = clips->x2 - clips->x1; cmd[i].body.height = clips->y2 - clips->y1; } vmw_cmd_commit(dev_priv, fifo_size); return 0; }