/**
* vmw_stdu_crtc_page_flip - Binds a buffer to a screen target
*
* @crtc: CRTC to attach FB to
* @fb: FB to attach
* @event: Event to be posted. This event should've been alloced
* using k[mz]alloc, and should've been completely initialized.
* @page_flip_flags: Input flags.
*
* If the STDU uses the same display and content buffers, i.e. a true flip,
* this function will replace the existing display buffer with the new content
* buffer.
*
* If the STDU uses different display and content buffers, i.e. a blit, then
* only the content buffer will be updated.
*
* RETURNS:
* 0 on success, error code on failure
*/
static int vmw_stdu_crtc_page_flip(struct drm_crtc *crtc,
struct drm_framebuffer *new_fb,
struct drm_pending_vblank_event *event,
uint32_t flags)
{
struct vmw_private *dev_priv = vmw_priv(crtc->dev);
struct vmw_screen_target_display_unit *stdu;
int ret;
if (crtc == NULL)
return -EINVAL;
dev_priv = vmw_priv(crtc->dev);
stdu = vmw_crtc_to_stdu(crtc);
crtc->primary->fb = new_fb;
stdu->content_fb = new_fb;
if (stdu->display_srf) {
/*
* If the display surface is the same as the content surface
* then remove the reference
*/
if (stdu->content_fb_type == SAME_AS_DISPLAY) {
if (stdu->defined) {
/* Unbind the current surface */
ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
if (unlikely(ret != 0))
goto err_out;
}
vmw_stdu_unpin_display(stdu);
stdu->display_srf = NULL;
}
}
if (!new_fb) {
/* Blanks the display */
(void) vmw_stdu_update_st(dev_priv, stdu);
return 0;
}
if (stdu->content_fb_type == SAME_AS_DISPLAY) {
stdu->display_srf = vmw_framebuffer_to_vfbs(new_fb)->surface;
ret = vmw_stdu_pin_display(stdu);
if (ret) {
stdu->display_srf = NULL;
goto err_out;
}
/* Bind display surface */
ret = vmw_stdu_bind_st(dev_priv, stdu, &stdu->display_srf->res);
if (unlikely(ret != 0))
goto err_unpin_display_and_content;
}
/* Update display surface: after this point everything is bound */
ret = vmw_stdu_update_st(dev_priv, stdu);
if (unlikely(ret != 0))
return ret;
if (event) {
struct vmw_fence_obj *fence = NULL;
struct drm_file *file_priv = event->base.file_priv;
vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
if (!fence)
return -ENOMEM;
ret = vmw_event_fence_action_queue(file_priv, fence,
&event->base,
&event->event.tv_sec,
&event->event.tv_usec,
true);
vmw_fence_obj_unreference(&fence);
}
return ret;
err_unpin_display_and_content:
vmw_stdu_unpin_display(stdu);
err_out:
crtc->primary->fb = NULL;
stdu->content_fb = NULL;
return ret;
}
/**
* vmw_stdu_crtc_set_config - Sets a mode
*
* @set: mode parameters
*
* This function is the device-specific portion of the DRM CRTC mode set.
* For the SVGA device, we do this by defining a Screen Target, binding a
* GB Surface to that target, and finally update the screen target.
*
* RETURNS:
* 0 on success, error code otherwise
*/
static int vmw_stdu_crtc_set_config(struct drm_mode_set *set)
{
struct vmw_private *dev_priv;
struct vmw_framebuffer *vfb;
struct vmw_screen_target_display_unit *stdu;
struct drm_display_mode *mode;
struct drm_framebuffer *new_fb;
struct drm_crtc *crtc;
struct drm_encoder *encoder;
struct drm_connector *connector;
bool turning_off;
int ret;
if (!set || !set->crtc)
return -EINVAL;
crtc = set->crtc;
stdu = vmw_crtc_to_stdu(crtc);
mode = set->mode;
new_fb = set->fb;
dev_priv = vmw_priv(crtc->dev);
turning_off = set->num_connectors == 0 || !mode || !new_fb;
vfb = (new_fb) ? vmw_framebuffer_to_vfb(new_fb) : NULL;
if (set->num_connectors > 1) {
DRM_ERROR("Too many connectors\n");
return -EINVAL;
}
if (set->num_connectors == 1 &&
set->connectors[0] != &stdu->base.connector) {
DRM_ERROR("Connectors don't match %p %p\n",
set->connectors[0], &stdu->base.connector);
return -EINVAL;
}
if (!turning_off && (set->x + mode->hdisplay > new_fb->width ||
set->y + mode->vdisplay > new_fb->height)) {
DRM_ERROR("Set outside of framebuffer\n");
return -EINVAL;
}
/* Only one active implicit frame-buffer at a time. */
mutex_lock(&dev_priv->global_kms_state_mutex);
if (!turning_off && stdu->base.is_implicit && dev_priv->implicit_fb &&
!(dev_priv->num_implicit == 1 && stdu->base.active_implicit)
&& dev_priv->implicit_fb != vfb) {
mutex_unlock(&dev_priv->global_kms_state_mutex);
DRM_ERROR("Multiple implicit framebuffers not supported.\n");
return -EINVAL;
}
mutex_unlock(&dev_priv->global_kms_state_mutex);
/* Since they always map one to one these are safe */
connector = &stdu->base.connector;
encoder = &stdu->base.encoder;
if (stdu->defined) {
ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
if (ret)
return ret;
vmw_stdu_unpin_display(stdu);
(void) vmw_stdu_update_st(dev_priv, stdu);
vmw_kms_del_active(dev_priv, &stdu->base);
ret = vmw_stdu_destroy_st(dev_priv, stdu);
if (ret)
return ret;
crtc->primary->fb = NULL;
crtc->enabled = false;
encoder->crtc = NULL;
connector->encoder = NULL;
stdu->content_fb_type = SAME_AS_DISPLAY;
crtc->x = set->x;
crtc->y = set->y;
}
if (turning_off)
return 0;
/*
* Steps to displaying a surface, assume surface is already
* bound:
* 1. define a screen target
* 2. bind a fb to the screen target
* 3. update that screen target (this is done later by
* vmw_kms_stdu_do_surface_dirty_or_present)
*/
/*
* Note on error handling: We can't really restore the crtc to
* it's original state on error, but we at least update the
* current state to what's submitted to hardware to enable
* future recovery.
*/
vmw_svga_enable(dev_priv);
ret = vmw_stdu_define_st(dev_priv, stdu, mode, set->x, set->y);
if (ret)
return ret;
crtc->x = set->x;
crtc->y = set->y;
crtc->mode = *mode;
ret = vmw_stdu_bind_fb(dev_priv, crtc, mode, new_fb);
if (ret)
return ret;
vmw_kms_add_active(dev_priv, &stdu->base, vfb);
crtc->enabled = true;
connector->encoder = encoder;
encoder->crtc = crtc;
return 0;
}
/**
* vmw_stdu_crtc_set_config - Sets a mode
*
* @set: mode parameters
*
* This function is the device-specific portion of the DRM CRTC mode set.
* For the SVGA device, we do this by defining a Screen Target, binding a
* GB Surface to that target, and finally update the screen target.
*
* RETURNS:
* 0 on success, error code otherwise
*/
static int vmw_stdu_crtc_set_config(struct drm_mode_set *set)
{
struct vmw_private *dev_priv;
struct vmw_screen_target_display_unit *stdu;
struct vmw_framebuffer *vfb;
struct vmw_framebuffer_surface *new_vfbs;
struct drm_display_mode *mode;
struct drm_framebuffer *new_fb;
struct drm_crtc *crtc;
struct drm_encoder *encoder;
struct drm_connector *connector;
int ret;
if (!set || !set->crtc)
return -EINVAL;
crtc = set->crtc;
crtc->x = set->x;
crtc->y = set->y;
stdu = vmw_crtc_to_stdu(crtc);
mode = set->mode;
new_fb = set->fb;
dev_priv = vmw_priv(crtc->dev);
if (set->num_connectors > 1) {
DRM_ERROR("Too many connectors\n");
return -EINVAL;
}
if (set->num_connectors == 1 &&
set->connectors[0] != &stdu->base.connector) {
DRM_ERROR("Connectors don't match %p %p\n",
set->connectors[0], &stdu->base.connector);
return -EINVAL;
}
/* Since they always map one to one these are safe */
connector = &stdu->base.connector;
encoder = &stdu->base.encoder;
/*
* After this point the CRTC will be considered off unless a new fb
* is bound
*/
if (stdu->defined) {
/* Unbind current surface by binding an invalid one */
ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
if (unlikely(ret != 0))
return ret;
/* Update Screen Target, display will now be blank */
if (crtc->primary->fb) {
vmw_stdu_update_st(dev_priv, stdu);
if (unlikely(ret != 0))
return ret;
}
crtc->primary->fb = NULL;
crtc->enabled = false;
encoder->crtc = NULL;
connector->encoder = NULL;
vmw_stdu_unpin_display(stdu);
stdu->content_fb = NULL;
stdu->content_fb_type = SAME_AS_DISPLAY;
ret = vmw_stdu_destroy_st(dev_priv, stdu);
/* The hardware is hung, give up */
if (unlikely(ret != 0))
return ret;
}
/* Any of these conditions means the caller wants CRTC off */
if (set->num_connectors == 0 || !mode || !new_fb)
return 0;
if (set->x + mode->hdisplay > new_fb->width ||
set->y + mode->vdisplay > new_fb->height) {
DRM_ERROR("Set outside of framebuffer\n");
return -EINVAL;
}
stdu->content_fb = new_fb;
vfb = vmw_framebuffer_to_vfb(stdu->content_fb);
if (vfb->dmabuf)
stdu->content_fb_type = SEPARATE_DMA;
/*
* If the requested mode is different than the width and height
* of the FB or if the content buffer is a DMA buf, then allocate
* a display FB that matches the dimension of the mode
*/
if (mode->hdisplay != new_fb->width ||
mode->vdisplay != new_fb->height ||
stdu->content_fb_type != SAME_AS_DISPLAY) {
struct vmw_surface content_srf;
struct drm_vmw_size display_base_size = {0};
struct vmw_surface *display_srf;
display_base_size.width = mode->hdisplay;
display_base_size.height = mode->vdisplay;
display_base_size.depth = 1;
/*
* If content buffer is a DMA buf, then we have to construct
* surface info
*/
if (stdu->content_fb_type == SEPARATE_DMA) {
switch (new_fb->bits_per_pixel) {
case 32:
content_srf.format = SVGA3D_X8R8G8B8;
break;
case 16:
content_srf.format = SVGA3D_R5G6B5;
break;
case 8:
content_srf.format = SVGA3D_P8;
break;
default:
DRM_ERROR("Invalid format\n");
ret = -EINVAL;
goto err_unref_content;
}
content_srf.flags = 0;
content_srf.mip_levels[0] = 1;
content_srf.multisample_count = 0;
} else {
stdu->content_fb_type = SEPARATE_SURFACE;
new_vfbs = vmw_framebuffer_to_vfbs(new_fb);
content_srf = *new_vfbs->surface;
}
ret = vmw_surface_gb_priv_define(crtc->dev,
0, /* because kernel visible only */
content_srf.flags,
content_srf.format,
true, /* a scanout buffer */
content_srf.mip_levels[0],
content_srf.multisample_count,
0,
display_base_size,
&display_srf);
if (unlikely(ret != 0)) {
DRM_ERROR("Cannot allocate a display FB.\n");
goto err_unref_content;
}
stdu->display_srf = display_srf;
} else {
new_vfbs = vmw_framebuffer_to_vfbs(new_fb);
stdu->display_srf = new_vfbs->surface;
}
ret = vmw_stdu_pin_display(stdu);
if (unlikely(ret != 0)) {
stdu->display_srf = NULL;
goto err_unref_content;
}
vmw_svga_enable(dev_priv);
/*
* Steps to displaying a surface, assume surface is already
* bound:
* 1. define a screen target
* 2. bind a fb to the screen target
* 3. update that screen target (this is done later by
* vmw_kms_stdu_do_surface_dirty_or_present)
*/
ret = vmw_stdu_define_st(dev_priv, stdu);
if (unlikely(ret != 0))
goto err_unpin_display_and_content;
ret = vmw_stdu_bind_st(dev_priv, stdu, &stdu->display_srf->res);
if (unlikely(ret != 0))
goto err_unpin_destroy_st;
connector->encoder = encoder;
encoder->crtc = crtc;
crtc->mode = *mode;
crtc->primary->fb = new_fb;
crtc->enabled = true;
return ret;
err_unpin_destroy_st:
vmw_stdu_destroy_st(dev_priv, stdu);
err_unpin_display_and_content:
vmw_stdu_unpin_display(stdu);
err_unref_content:
stdu->content_fb = NULL;
return ret;
}