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![Thomas Wood](/assets/img/avatar_default.png)
Introduce generic functions to register and unregister connectors. This provides a common place to add and remove associated user space interfaces. Signed-off-by: Thomas Wood <thomas.wood@intel.com> Reviewed-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
448 lines
11 KiB
C
448 lines
11 KiB
C
/**************************************************************************
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*
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* Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#include "vmwgfx_kms.h"
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#define vmw_crtc_to_ldu(x) \
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container_of(x, struct vmw_legacy_display_unit, base.crtc)
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#define vmw_encoder_to_ldu(x) \
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container_of(x, struct vmw_legacy_display_unit, base.encoder)
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#define vmw_connector_to_ldu(x) \
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container_of(x, struct vmw_legacy_display_unit, base.connector)
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struct vmw_legacy_display {
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struct list_head active;
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unsigned num_active;
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unsigned last_num_active;
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struct vmw_framebuffer *fb;
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};
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/**
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* Display unit using the legacy register interface.
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*/
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struct vmw_legacy_display_unit {
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struct vmw_display_unit base;
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struct list_head active;
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};
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static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu)
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{
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list_del_init(&ldu->active);
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vmw_display_unit_cleanup(&ldu->base);
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kfree(ldu);
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}
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/*
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* Legacy Display Unit CRTC functions
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*/
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static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc)
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{
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vmw_ldu_destroy(vmw_crtc_to_ldu(crtc));
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}
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static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
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{
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struct vmw_legacy_display *lds = dev_priv->ldu_priv;
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struct vmw_legacy_display_unit *entry;
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struct vmw_display_unit *du = NULL;
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struct drm_framebuffer *fb = NULL;
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struct drm_crtc *crtc = NULL;
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int i = 0, ret;
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/* If there is no display topology the host just assumes
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* that the guest will set the same layout as the host.
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*/
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if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) {
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int w = 0, h = 0;
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list_for_each_entry(entry, &lds->active, active) {
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crtc = &entry->base.crtc;
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w = max(w, crtc->x + crtc->mode.hdisplay);
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h = max(h, crtc->y + crtc->mode.vdisplay);
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i++;
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}
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if (crtc == NULL)
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return 0;
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fb = entry->base.crtc.primary->fb;
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return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0],
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fb->bits_per_pixel, fb->depth);
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}
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if (!list_empty(&lds->active)) {
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entry = list_entry(lds->active.next, typeof(*entry), active);
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fb = entry->base.crtc.primary->fb;
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vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitches[0],
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fb->bits_per_pixel, fb->depth);
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}
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/* Make sure we always show something. */
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vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS,
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lds->num_active ? lds->num_active : 1);
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i = 0;
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list_for_each_entry(entry, &lds->active, active) {
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crtc = &entry->base.crtc;
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vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
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vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
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vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x);
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vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y);
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vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay);
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vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay);
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vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
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i++;
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}
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BUG_ON(i != lds->num_active);
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lds->last_num_active = lds->num_active;
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/* Find the first du with a cursor. */
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list_for_each_entry(entry, &lds->active, active) {
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du = &entry->base;
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if (!du->cursor_dmabuf)
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continue;
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ret = vmw_cursor_update_dmabuf(dev_priv,
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du->cursor_dmabuf,
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64, 64,
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du->hotspot_x,
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du->hotspot_y);
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if (ret == 0)
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break;
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DRM_ERROR("Could not update cursor image\n");
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}
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return 0;
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}
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static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
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struct vmw_legacy_display_unit *ldu)
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{
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struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
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if (list_empty(&ldu->active))
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return 0;
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/* Must init otherwise list_empty(&ldu->active) will not work. */
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list_del_init(&ldu->active);
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if (--(ld->num_active) == 0) {
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BUG_ON(!ld->fb);
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if (ld->fb->unpin)
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ld->fb->unpin(ld->fb);
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ld->fb = NULL;
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}
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return 0;
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}
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static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
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struct vmw_legacy_display_unit *ldu,
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struct vmw_framebuffer *vfb)
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{
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struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
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struct vmw_legacy_display_unit *entry;
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struct list_head *at;
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BUG_ON(!ld->num_active && ld->fb);
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if (vfb != ld->fb) {
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if (ld->fb && ld->fb->unpin)
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ld->fb->unpin(ld->fb);
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if (vfb->pin)
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vfb->pin(vfb);
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ld->fb = vfb;
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}
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if (!list_empty(&ldu->active))
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return 0;
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at = &ld->active;
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list_for_each_entry(entry, &ld->active, active) {
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if (entry->base.unit > ldu->base.unit)
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break;
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at = &entry->active;
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}
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list_add(&ldu->active, at);
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ld->num_active++;
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return 0;
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}
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static int vmw_ldu_crtc_set_config(struct drm_mode_set *set)
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{
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struct vmw_private *dev_priv;
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struct vmw_legacy_display_unit *ldu;
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struct drm_connector *connector;
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struct drm_display_mode *mode;
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struct drm_encoder *encoder;
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struct vmw_framebuffer *vfb;
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struct drm_framebuffer *fb;
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struct drm_crtc *crtc;
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if (!set)
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return -EINVAL;
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if (!set->crtc)
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return -EINVAL;
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/* get the ldu */
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crtc = set->crtc;
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ldu = vmw_crtc_to_ldu(crtc);
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vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL;
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dev_priv = vmw_priv(crtc->dev);
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if (set->num_connectors > 1) {
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DRM_ERROR("to many connectors\n");
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return -EINVAL;
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}
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if (set->num_connectors == 1 &&
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set->connectors[0] != &ldu->base.connector) {
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DRM_ERROR("connector doesn't match %p %p\n",
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set->connectors[0], &ldu->base.connector);
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return -EINVAL;
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}
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/* ldu only supports one fb active at the time */
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if (dev_priv->ldu_priv->fb && vfb &&
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!(dev_priv->ldu_priv->num_active == 1 &&
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!list_empty(&ldu->active)) &&
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dev_priv->ldu_priv->fb != vfb) {
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DRM_ERROR("Multiple framebuffers not supported\n");
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return -EINVAL;
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}
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/* since they always map one to one these are safe */
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connector = &ldu->base.connector;
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encoder = &ldu->base.encoder;
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/* should we turn the crtc off? */
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if (set->num_connectors == 0 || !set->mode || !set->fb) {
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connector->encoder = NULL;
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encoder->crtc = NULL;
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crtc->primary->fb = NULL;
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crtc->enabled = false;
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vmw_ldu_del_active(dev_priv, ldu);
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return vmw_ldu_commit_list(dev_priv);
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}
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/* we now know we want to set a mode */
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mode = set->mode;
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fb = set->fb;
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if (set->x + mode->hdisplay > fb->width ||
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set->y + mode->vdisplay > fb->height) {
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DRM_ERROR("set outside of framebuffer\n");
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return -EINVAL;
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}
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vmw_fb_off(dev_priv);
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crtc->primary->fb = fb;
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encoder->crtc = crtc;
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connector->encoder = encoder;
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crtc->x = set->x;
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crtc->y = set->y;
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crtc->mode = *mode;
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crtc->enabled = true;
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vmw_ldu_add_active(dev_priv, ldu, vfb);
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return vmw_ldu_commit_list(dev_priv);
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}
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static struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
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.save = vmw_du_crtc_save,
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.restore = vmw_du_crtc_restore,
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.cursor_set = vmw_du_crtc_cursor_set,
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.cursor_move = vmw_du_crtc_cursor_move,
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.gamma_set = vmw_du_crtc_gamma_set,
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.destroy = vmw_ldu_crtc_destroy,
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.set_config = vmw_ldu_crtc_set_config,
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};
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/*
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* Legacy Display Unit encoder functions
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*/
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static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
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{
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vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
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}
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static struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
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.destroy = vmw_ldu_encoder_destroy,
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};
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/*
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* Legacy Display Unit connector functions
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*/
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static void vmw_ldu_connector_destroy(struct drm_connector *connector)
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{
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vmw_ldu_destroy(vmw_connector_to_ldu(connector));
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}
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static struct drm_connector_funcs vmw_legacy_connector_funcs = {
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.dpms = vmw_du_connector_dpms,
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.save = vmw_du_connector_save,
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.restore = vmw_du_connector_restore,
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.detect = vmw_du_connector_detect,
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.fill_modes = vmw_du_connector_fill_modes,
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.set_property = vmw_du_connector_set_property,
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.destroy = vmw_ldu_connector_destroy,
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};
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static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
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{
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struct vmw_legacy_display_unit *ldu;
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struct drm_device *dev = dev_priv->dev;
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struct drm_connector *connector;
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struct drm_encoder *encoder;
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struct drm_crtc *crtc;
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ldu = kzalloc(sizeof(*ldu), GFP_KERNEL);
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if (!ldu)
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return -ENOMEM;
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ldu->base.unit = unit;
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crtc = &ldu->base.crtc;
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encoder = &ldu->base.encoder;
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connector = &ldu->base.connector;
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INIT_LIST_HEAD(&ldu->active);
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ldu->base.pref_active = (unit == 0);
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ldu->base.pref_width = dev_priv->initial_width;
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ldu->base.pref_height = dev_priv->initial_height;
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ldu->base.pref_mode = NULL;
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ldu->base.is_implicit = true;
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drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
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DRM_MODE_CONNECTOR_VIRTUAL);
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connector->status = vmw_du_connector_detect(connector, true);
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drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
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DRM_MODE_ENCODER_VIRTUAL);
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drm_mode_connector_attach_encoder(connector, encoder);
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encoder->possible_crtcs = (1 << unit);
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encoder->possible_clones = 0;
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(void) drm_connector_register(connector);
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drm_crtc_init(dev, crtc, &vmw_legacy_crtc_funcs);
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drm_mode_crtc_set_gamma_size(crtc, 256);
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drm_object_attach_property(&connector->base,
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dev->mode_config.dirty_info_property,
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1);
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return 0;
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}
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int vmw_kms_init_legacy_display_system(struct vmw_private *dev_priv)
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{
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struct drm_device *dev = dev_priv->dev;
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int i, ret;
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if (dev_priv->ldu_priv) {
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DRM_INFO("ldu system already on\n");
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return -EINVAL;
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}
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dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL);
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if (!dev_priv->ldu_priv)
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return -ENOMEM;
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INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
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dev_priv->ldu_priv->num_active = 0;
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dev_priv->ldu_priv->last_num_active = 0;
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dev_priv->ldu_priv->fb = NULL;
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/* for old hardware without multimon only enable one display */
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if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
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ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
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else
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ret = drm_vblank_init(dev, 1);
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if (ret != 0)
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goto err_free;
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ret = drm_mode_create_dirty_info_property(dev);
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if (ret != 0)
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goto err_vblank_cleanup;
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if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
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for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
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vmw_ldu_init(dev_priv, i);
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else
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vmw_ldu_init(dev_priv, 0);
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return 0;
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err_vblank_cleanup:
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drm_vblank_cleanup(dev);
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err_free:
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kfree(dev_priv->ldu_priv);
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dev_priv->ldu_priv = NULL;
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return ret;
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}
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int vmw_kms_close_legacy_display_system(struct vmw_private *dev_priv)
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{
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struct drm_device *dev = dev_priv->dev;
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if (!dev_priv->ldu_priv)
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return -ENOSYS;
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drm_vblank_cleanup(dev);
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BUG_ON(!list_empty(&dev_priv->ldu_priv->active));
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kfree(dev_priv->ldu_priv);
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return 0;
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}
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