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drm/vmwgfx: Switch over to internal atomic API for STDU

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Switch over to using internal atomic API for mode set.

This removes the legacy set_config API, replacing it with
drm_atomic_helper_set_config().  The DRM helper will use various
vmwgfx-specific atomic functions to set a mode.

DRIVER_ATOMIC capability flag is not yet set, so the user mode
will still use the legacy mode set IOCTL.

v2:
* Avoid a clash between page-flip pinning and setcrtc pinning, modify
the page-flip code to use the page-flip helper and the atomic callbacks.
To enable this, we will need to add a wrapper around atomic_commit.

* Add vmw_kms_set_config() to work around vmwgfx xorg driver bug

Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
This commit is contained in:
Sinclair Yeh 2017-03-23 14:29:22 -07:00
parent aa74f0687c
commit 904bb5e581
3 changed files with 51 additions and 295 deletions
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20
drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
View File

@ -2885,3 +2885,23 @@ vmw_kms_create_implicit_placement_property(struct vmw_private *dev_priv,
"implicit_placement", 0, 1);
}
/**
* vmw_kms_set_config - Wrapper around drm_atomic_helper_set_config
*
* @set: The configuration to set.
*
* The vmwgfx Xorg driver doesn't assign the mode::type member, which
* when drm_mode_set_crtcinfo is called as part of the configuration setting
* causes it to return incorrect crtc dimensions causing severe problems in
* the vmwgfx modesetting. So explicitly clear that member before calling
* into drm_atomic_helper_set_config.
*/
int vmw_kms_set_config(struct drm_mode_set *set)
{
if (set && set->mode)
set->mode->type = 0;
return drm_atomic_helper_set_config(set);
}

1
drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
View File

@ -449,5 +449,6 @@ int vmw_kms_stdu_dma(struct vmw_private *dev_priv,
bool to_surface,
bool interruptible);
int vmw_kms_set_config(struct drm_mode_set *set);
#endif

325
drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
View File

@ -104,8 +104,7 @@ struct vmw_stdu_surface_copy {
*/
struct vmw_screen_target_display_unit {
struct vmw_display_unit base;
struct vmw_surface *display_srf;
const struct vmw_surface *display_srf;
enum stdu_content_type content_fb_type;
bool defined;
@ -117,32 +116,6 @@ static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu);
/******************************************************************************
* Screen Target Display Unit helper Functions
*****************************************************************************/
/**
* vmw_stdu_unpin_display - unpins the resource associated with display surface
*
* @stdu: contains the display surface
*
* If the display surface was privatedly allocated by
* vmw_surface_gb_priv_define() and not registered as a framebuffer, then it
* won't be automatically cleaned up when all the framebuffers are freed. As
* such, we have to explicitly call vmw_resource_unreference() to get it freed.
*/
static void vmw_stdu_unpin_display(struct vmw_screen_target_display_unit *stdu)
{
if (stdu->display_srf) {
struct vmw_resource *res = &stdu->display_srf->res;
vmw_resource_unpin(res);
vmw_surface_unreference(&stdu->display_srf);
}
}
/******************************************************************************
* Screen Target Display Unit CRTC Functions
*****************************************************************************/
@ -228,7 +201,7 @@ static int vmw_stdu_define_st(struct vmw_private *dev_priv,
*/
static int vmw_stdu_bind_st(struct vmw_private *dev_priv,
struct vmw_screen_target_display_unit *stdu,
struct vmw_resource *res)
const struct vmw_resource *res)
{
SVGA3dSurfaceImageId image;
@ -377,129 +350,6 @@ static int vmw_stdu_destroy_st(struct vmw_private *dev_priv,
return ret;
}
/**
* vmw_stdu_bind_fb - Bind an fb to a defined screen target
*
* @dev_priv: Pointer to a device private struct.
* @crtc: The crtc holding the screen target.
* @mode: The mode currently used by the screen target. Must be non-NULL.
* @new_fb: The new framebuffer to bind. Must be non-NULL.
*
* RETURNS:
* 0 on success, error code on failure.
*/
static int vmw_stdu_bind_fb(struct vmw_private *dev_priv,
struct drm_crtc *crtc,
struct drm_display_mode *mode,
struct drm_framebuffer *new_fb)
{
struct vmw_screen_target_display_unit *stdu = vmw_crtc_to_stdu(crtc);
struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(new_fb);
struct vmw_surface *new_display_srf = NULL;
enum stdu_content_type new_content_type;
struct vmw_framebuffer_surface *new_vfbs;
int ret;
WARN_ON_ONCE(!stdu->defined);
new_vfbs = (vfb->dmabuf) ? NULL : vmw_framebuffer_to_vfbs(new_fb);
if (new_vfbs && new_vfbs->surface->base_size.width == mode->hdisplay &&
new_vfbs->surface->base_size.height == mode->vdisplay)
new_content_type = SAME_AS_DISPLAY;
else if (vfb->dmabuf)
new_content_type = SEPARATE_DMA;
else
new_content_type = SEPARATE_SURFACE;
if (new_content_type != SAME_AS_DISPLAY &&
!stdu->display_srf) {
struct vmw_surface content_srf;
struct drm_vmw_size display_base_size = {0};
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 (new_content_type == SEPARATE_DMA) {
switch (new_fb->format->cpp[0] * 8) {
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");
return -EINVAL;
}
content_srf.flags = 0;
content_srf.mip_levels[0] = 1;
content_srf.multisample_count = 0;
} else {
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,
&new_display_srf);
if (unlikely(ret != 0)) {
DRM_ERROR("Could not allocate screen target surface.\n");
return ret;
}
} else if (new_content_type == SAME_AS_DISPLAY) {
new_display_srf = vmw_surface_reference(new_vfbs->surface);
}
if (new_display_srf) {
/* Pin new surface before flipping */
ret = vmw_resource_pin(&new_display_srf->res, false);
if (ret)
goto out_srf_unref;
ret = vmw_stdu_bind_st(dev_priv, stdu, &new_display_srf->res);
if (ret)
goto out_srf_unpin;
/* Unpin and unreference old surface */
vmw_stdu_unpin_display(stdu);
/* Transfer the reference */
stdu->display_srf = new_display_srf;
new_display_srf = NULL;
}
crtc->primary->fb = new_fb;
stdu->content_fb_type = new_content_type;
return 0;
out_srf_unpin:
vmw_resource_unpin(&new_display_srf->res);
out_srf_unref:
vmw_surface_unreference(&new_display_srf);
return ret;
}
/**
* vmw_stdu_crtc_mode_set_nofb - Updates screen target size
@ -600,136 +450,6 @@ static void vmw_stdu_crtc_helper_disable(struct drm_crtc *crtc)
}
}
/**
* 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_page_flip - Binds a buffer to a screen target
*
@ -756,9 +476,9 @@ static int vmw_stdu_crtc_page_flip(struct drm_crtc *crtc,
{
struct vmw_private *dev_priv = vmw_priv(crtc->dev);
struct vmw_screen_target_display_unit *stdu;
struct drm_vmw_rect vclips;
struct vmw_screen_target_display_unit *stdu = vmw_crtc_to_stdu(crtc);
struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(new_fb);
struct drm_vmw_rect vclips;
int ret;
dev_priv = vmw_priv(crtc->dev);
@ -767,25 +487,42 @@ static int vmw_stdu_crtc_page_flip(struct drm_crtc *crtc,
if (!stdu->defined || !vmw_kms_crtc_flippable(dev_priv, crtc))
return -EINVAL;
ret = vmw_stdu_bind_fb(dev_priv, crtc, &crtc->mode, new_fb);
if (ret)
/*
* We're always async, but the helper doesn't know how to set async
* so lie to the helper. Also, the helper expects someone
* to pick the event up from the crtc state, and if nobody does,
* it will free it. Since we handle the event in this function,
* don't hand it to the helper.
*/
flags &= ~DRM_MODE_PAGE_FLIP_ASYNC;
ret = drm_atomic_helper_page_flip(crtc, new_fb, NULL, flags);
if (ret) {
DRM_ERROR("Page flip error %d.\n", ret);
return ret;
}
if (stdu->base.is_implicit)
vmw_kms_update_implicit_fb(dev_priv, crtc);
/*
* Now that we've bound a new surface to the screen target,
* update the contents.
*/
vclips.x = crtc->x;
vclips.y = crtc->y;
vclips.w = crtc->mode.hdisplay;
vclips.h = crtc->mode.vdisplay;
if (vfb->dmabuf)
ret = vmw_kms_stdu_dma(dev_priv, NULL, vfb, NULL, NULL, &vclips,
1, 1, true, false);
else
ret = vmw_kms_stdu_surface_dirty(dev_priv, vfb, NULL, &vclips,
NULL, 0, 0, 1, 1, NULL);
if (ret)
if (ret) {
DRM_ERROR("Page flip update error %d.\n", ret);
return ret;
}
if (event) {
struct vmw_fence_obj *fence = NULL;
@ -802,7 +539,7 @@ static int vmw_stdu_crtc_page_flip(struct drm_crtc *crtc,
true);
vmw_fence_obj_unreference(&fence);
} else {
vmw_fifo_flush(dev_priv, false);
(void) vmw_fifo_flush(dev_priv, false);
}
return 0;
@ -1123,7 +860,7 @@ static const struct drm_crtc_funcs vmw_stdu_crtc_funcs = {
.reset = vmw_du_crtc_reset,
.atomic_duplicate_state = vmw_du_crtc_duplicate_state,
.atomic_destroy_state = vmw_du_crtc_destroy_state,
.set_config = vmw_stdu_crtc_set_config,
.set_config = vmw_kms_set_config,
.page_flip = vmw_stdu_crtc_page_flip,
};
@ -1425,8 +1162,8 @@ vmw_stdu_primary_plane_atomic_update(struct drm_plane *plane,
static const struct drm_plane_funcs vmw_stdu_plane_funcs = {
.update_plane = drm_primary_helper_update,
.disable_plane = drm_primary_helper_disable,
.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,
@ -1434,8 +1171,8 @@ static const struct drm_plane_funcs vmw_stdu_plane_funcs = {
};
static const struct drm_plane_funcs vmw_stdu_cursor_funcs = {
.update_plane = vmw_du_cursor_plane_update,
.disable_plane = vmw_du_cursor_plane_disable,
.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,
@ -1625,8 +1362,6 @@ err_free:
*/
static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu)
{
vmw_stdu_unpin_display(stdu);
vmw_du_cleanup(&stdu->base);
kfree(stdu);
}