| /************************************************************************** |
| * |
| * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA |
| * 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, 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_kms.h" |
| |
| |
| #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_display_unit_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 vmw_display_unit *du = NULL; |
| struct drm_framebuffer *fb = NULL; |
| struct drm_crtc *crtc = NULL; |
| int i = 0, ret; |
| |
| /* 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); |
| i++; |
| } |
| |
| if (crtc == NULL) |
| return 0; |
| fb = entry->base.crtc.primary->fb; |
| |
| return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0], |
| fb->bits_per_pixel, fb->depth); |
| } |
| |
| if (!list_empty(&lds->active)) { |
| entry = list_entry(lds->active.next, typeof(*entry), active); |
| fb = entry->base.crtc.primary->fb; |
| |
| vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitches[0], |
| fb->bits_per_pixel, fb->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); |
| vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID); |
| |
| i++; |
| } |
| |
| BUG_ON(i != lds->num_active); |
| |
| lds->last_num_active = lds->num_active; |
| |
| |
| /* Find the first du with a cursor. */ |
| list_for_each_entry(entry, &lds->active, active) { |
| du = &entry->base; |
| |
| if (!du->cursor_dmabuf) |
| continue; |
| |
| ret = vmw_cursor_update_dmabuf(dev_priv, |
| du->cursor_dmabuf, |
| 64, 64, |
| du->hotspot_x, |
| du->hotspot_y); |
| if (ret == 0) |
| break; |
| |
| DRM_ERROR("Could not update cursor image\n"); |
| } |
| |
| return 0; |
| } |
| |
| 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); |
| if (ld->fb->unpin) |
| ld->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 && ld->fb->unpin) |
| ld->fb->unpin(ld->fb); |
| if (vfb->pin) |
| vfb->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; |
| } |
| |
| static int vmw_ldu_crtc_set_config(struct drm_mode_set *set) |
| { |
| struct vmw_private *dev_priv; |
| struct vmw_legacy_display_unit *ldu; |
| struct drm_connector *connector; |
| struct drm_display_mode *mode; |
| struct drm_encoder *encoder; |
| struct vmw_framebuffer *vfb; |
| struct drm_framebuffer *fb; |
| struct drm_crtc *crtc; |
| |
| if (!set) |
| return -EINVAL; |
| |
| if (!set->crtc) |
| return -EINVAL; |
| |
| /* get the ldu */ |
| crtc = set->crtc; |
| ldu = vmw_crtc_to_ldu(crtc); |
| vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL; |
| dev_priv = vmw_priv(crtc->dev); |
| |
| if (set->num_connectors > 1) { |
| DRM_ERROR("to many connectors\n"); |
| return -EINVAL; |
| } |
| |
| if (set->num_connectors == 1 && |
| set->connectors[0] != &ldu->base.connector) { |
| DRM_ERROR("connector doesn't match %p %p\n", |
| set->connectors[0], &ldu->base.connector); |
| return -EINVAL; |
| } |
| |
| /* ldu only supports one fb active at the time */ |
| if (dev_priv->ldu_priv->fb && vfb && |
| !(dev_priv->ldu_priv->num_active == 1 && |
| !list_empty(&ldu->active)) && |
| dev_priv->ldu_priv->fb != vfb) { |
| DRM_ERROR("Multiple framebuffers not supported\n"); |
| return -EINVAL; |
| } |
| |
| /* since they always map one to one these are safe */ |
| connector = &ldu->base.connector; |
| encoder = &ldu->base.encoder; |
| |
| /* should we turn the crtc off? */ |
| if (set->num_connectors == 0 || !set->mode || !set->fb) { |
| |
| connector->encoder = NULL; |
| encoder->crtc = NULL; |
| crtc->primary->fb = NULL; |
| crtc->enabled = false; |
| |
| vmw_ldu_del_active(dev_priv, ldu); |
| |
| return vmw_ldu_commit_list(dev_priv); |
| } |
| |
| |
| /* we now know we want to set a mode */ |
| mode = set->mode; |
| fb = set->fb; |
| |
| if (set->x + mode->hdisplay > fb->width || |
| set->y + mode->vdisplay > fb->height) { |
| DRM_ERROR("set outside of framebuffer\n"); |
| return -EINVAL; |
| } |
| |
| vmw_fb_off(dev_priv); |
| |
| crtc->primary->fb = fb; |
| encoder->crtc = crtc; |
| connector->encoder = encoder; |
| crtc->x = set->x; |
| crtc->y = set->y; |
| crtc->mode = *mode; |
| crtc->enabled = true; |
| |
| vmw_ldu_add_active(dev_priv, ldu, vfb); |
| |
| return vmw_ldu_commit_list(dev_priv); |
| } |
| |
| static struct drm_crtc_funcs vmw_legacy_crtc_funcs = { |
| .save = vmw_du_crtc_save, |
| .restore = vmw_du_crtc_restore, |
| .cursor_set = vmw_du_crtc_cursor_set, |
| .cursor_move = vmw_du_crtc_cursor_move, |
| .gamma_set = vmw_du_crtc_gamma_set, |
| .destroy = vmw_ldu_crtc_destroy, |
| .set_config = vmw_ldu_crtc_set_config, |
| }; |
| |
| |
| /* |
| * Legacy Display Unit encoder functions |
| */ |
| |
| static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder) |
| { |
| vmw_ldu_destroy(vmw_encoder_to_ldu(encoder)); |
| } |
| |
| static 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 struct drm_connector_funcs vmw_legacy_connector_funcs = { |
| .dpms = vmw_du_connector_dpms, |
| .save = vmw_du_connector_save, |
| .restore = vmw_du_connector_restore, |
| .detect = vmw_du_connector_detect, |
| .fill_modes = vmw_du_connector_fill_modes, |
| .set_property = vmw_du_connector_set_property, |
| .destroy = vmw_ldu_connector_destroy, |
| }; |
| |
| static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit) |
| { |
| struct vmw_legacy_display_unit *ldu; |
| struct drm_device *dev = dev_priv->dev; |
| struct drm_connector *connector; |
| struct drm_encoder *encoder; |
| struct drm_crtc *crtc; |
| |
| 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; |
| |
| 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; |
| ldu->base.pref_mode = NULL; |
| ldu->base.is_implicit = true; |
| |
| drm_connector_init(dev, connector, &vmw_legacy_connector_funcs, |
| DRM_MODE_CONNECTOR_VIRTUAL); |
| connector->status = vmw_du_connector_detect(connector, true); |
| |
| drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs, |
| DRM_MODE_ENCODER_VIRTUAL); |
| drm_mode_connector_attach_encoder(connector, encoder); |
| encoder->possible_crtcs = (1 << unit); |
| encoder->possible_clones = 0; |
| |
| (void) drm_connector_register(connector); |
| |
| drm_crtc_init(dev, crtc, &vmw_legacy_crtc_funcs); |
| |
| drm_mode_crtc_set_gamma_size(crtc, 256); |
| |
| drm_object_attach_property(&connector->base, |
| dev->mode_config.dirty_info_property, |
| 1); |
| |
| return 0; |
| } |
| |
| int vmw_kms_init_legacy_display_system(struct vmw_private *dev_priv) |
| { |
| struct drm_device *dev = dev_priv->dev; |
| int i, ret; |
| |
| if (dev_priv->ldu_priv) { |
| DRM_INFO("ldu system already on\n"); |
| 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; |
| |
| /* for old hardware without multimon only enable one display */ |
| if (dev_priv->capabilities & SVGA_CAP_MULTIMON) |
| ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS); |
| else |
| ret = drm_vblank_init(dev, 1); |
| if (ret != 0) |
| goto err_free; |
| |
| ret = drm_mode_create_dirty_info_property(dev); |
| if (ret != 0) |
| goto err_vblank_cleanup; |
| |
| if (dev_priv->capabilities & SVGA_CAP_MULTIMON) |
| for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) |
| vmw_ldu_init(dev_priv, i); |
| else |
| vmw_ldu_init(dev_priv, 0); |
| |
| return 0; |
| |
| err_vblank_cleanup: |
| drm_vblank_cleanup(dev); |
| err_free: |
| kfree(dev_priv->ldu_priv); |
| dev_priv->ldu_priv = NULL; |
| return ret; |
| } |
| |
| int vmw_kms_close_legacy_display_system(struct vmw_private *dev_priv) |
| { |
| struct drm_device *dev = dev_priv->dev; |
| |
| if (!dev_priv->ldu_priv) |
| return -ENOSYS; |
| |
| drm_vblank_cleanup(dev); |
| |
| BUG_ON(!list_empty(&dev_priv->ldu_priv->active)); |
| |
| kfree(dev_priv->ldu_priv); |
| |
| return 0; |
| } |