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drm/vmwgfx: Remove explicit and broken vblank handling

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The explicit vblank handling was never finished. The driver never had
the full implementation of vblank and what was there is emulated
by DRM when the driver doesn't pretend to be implementing it itself.

Let DRM handle the vblank emulation and stop pretending the driver is
doing anything special with vblank. In the future it would make sense
to implement helpers for full vblank handling because vkms and
amdgpu_vkms already have that code. Exporting it to common helpers and
having all three drivers share it would make sense (that would be largely
just to allow more of igt to run).

Signed-off-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Maaz Mombasawala <mombasawalam@vmware.com>
Reviewed-by: Martin Krastev <krastevm@vmware.com>
Reviewed-by: Michael Banack <banackm@vmware.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221022040236.616490-15-zack@kde.org
This commit is contained in:
Zack Rusin 2022-10-22 00:02:33 -04:00
parent df42523c12
commit 2e10cdc6e8
5 changed files with 1 additions and 101 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
View File

@ -1208,9 +1208,6 @@ int vmw_kms_write_svga(struct vmw_private *vmw_priv,
bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
uint32_t pitch,
uint32_t height);
u32 vmw_get_vblank_counter(struct drm_crtc *crtc);
int vmw_enable_vblank(struct drm_crtc *crtc);
void vmw_disable_vblank(struct drm_crtc *crtc);
int vmw_kms_present(struct vmw_private *dev_priv,
struct drm_file *file_priv,
struct vmw_framebuffer *vfb,

34
drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
View File

@ -31,7 +31,6 @@
#include <drm/drm_fourcc.h>
#include <drm/drm_rect.h>
#include <drm/drm_sysfs.h>
#include <drm/drm_vblank.h>
#include "vmwgfx_kms.h"
@ -981,15 +980,6 @@ void vmw_du_crtc_atomic_begin(struct drm_crtc *crtc,
void vmw_du_crtc_atomic_flush(struct drm_crtc *crtc,
struct drm_atomic_state *state)
{
struct drm_pending_vblank_event *event = crtc->state->event;
if (event) {
crtc->state->event = NULL;
spin_lock_irq(&crtc->dev->event_lock);
drm_crtc_send_vblank_event(crtc, event);
spin_unlock_irq(&crtc->dev->event_lock);
}
}
@ -2307,30 +2297,6 @@ bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
dev_priv->max_primary_mem : dev_priv->vram_size);
}
/*
* Function called by DRM code called with vbl_lock held.
*/
u32 vmw_get_vblank_counter(struct drm_crtc *crtc)
{
return 0;
}
/*
* Function called by DRM code called with vbl_lock held.
*/
int vmw_enable_vblank(struct drm_crtc *crtc)
{
return -EINVAL;
}
/*
* Function called by DRM code called with vbl_lock held.
*/
void vmw_disable_vblank(struct drm_crtc *crtc)
{
}
/**
* vmw_du_update_layout - Update the display unit with topology from resolution
* plugin and generate DRM uevent

8
drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
View File

@ -28,7 +28,6 @@
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_vblank.h>
#include "vmwgfx_kms.h"
@ -235,9 +234,6 @@ static const struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
.atomic_duplicate_state = vmw_du_crtc_duplicate_state,
.atomic_destroy_state = vmw_du_crtc_destroy_state,
.set_config = drm_atomic_helper_set_config,
.get_vblank_counter = vmw_get_vblank_counter,
.enable_vblank = vmw_enable_vblank,
.disable_vblank = vmw_disable_vblank,
};
@ -507,10 +503,6 @@ int vmw_kms_ldu_init_display(struct vmw_private *dev_priv)
dev_priv->ldu_priv->last_num_active = 0;
dev_priv->ldu_priv->fb = NULL;
ret = drm_vblank_init(dev, num_display_units);
if (ret != 0)
goto err_free;
vmw_kms_create_implicit_placement_property(dev_priv);
for (i = 0; i < num_display_units; ++i) {

31
drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
View File

@ -29,7 +29,6 @@
#include <drm/drm_atomic_helper.h>
#include <drm/drm_damage_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_vblank.h>
#include "vmwgfx_kms.h"
@ -320,9 +319,6 @@ static const struct drm_crtc_funcs vmw_screen_object_crtc_funcs = {
.atomic_destroy_state = vmw_du_crtc_destroy_state,
.set_config = drm_atomic_helper_set_config,
.page_flip = drm_atomic_helper_page_flip,
.get_vblank_counter = vmw_get_vblank_counter,
.enable_vblank = vmw_enable_vblank,
.disable_vblank = vmw_disable_vblank,
};
/*
@ -730,7 +726,6 @@ vmw_sou_primary_plane_atomic_update(struct drm_plane *plane,
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 drm_crtc *crtc = new_state->crtc;
struct drm_pending_vblank_event *event = NULL;
struct vmw_fence_obj *fence = NULL;
int ret;
@ -754,24 +749,6 @@ vmw_sou_primary_plane_atomic_update(struct drm_plane *plane,
return;
}
/* For error case vblank event is send from vmw_du_crtc_atomic_flush */
event = crtc->state->event;
if (event && fence) {
struct drm_file *file_priv = event->base.file_priv;
ret = vmw_event_fence_action_queue(file_priv,
fence,
&event->base,
&event->event.vbl.tv_sec,
&event->event.vbl.tv_usec,
true);
if (unlikely(ret != 0))
DRM_ERROR("Failed to queue event on fence.\n");
else
crtc->state->event = NULL;
}
if (fence)
vmw_fence_obj_unreference(&fence);
}
@ -947,18 +924,12 @@ err_free:
int vmw_kms_sou_init_display(struct vmw_private *dev_priv)
{
struct drm_device *dev = &dev_priv->drm;
int i, ret;
int i;
if (!(dev_priv->capabilities & SVGA_CAP_SCREEN_OBJECT_2)) {
return -ENOSYS;
}
ret = -ENOMEM;
ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
if (unlikely(ret != 0))
return ret;
for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
vmw_sou_init(dev_priv, i);

26
drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
View File

@ -29,7 +29,6 @@
#include <drm/drm_atomic_helper.h>
#include <drm/drm_damage_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_vblank.h>
#include "vmwgfx_kms.h"
#include "vmw_surface_cache.h"
@ -925,9 +924,6 @@ static const struct drm_crtc_funcs vmw_stdu_crtc_funcs = {
.atomic_destroy_state = vmw_du_crtc_destroy_state,
.set_config = drm_atomic_helper_set_config,
.page_flip = drm_atomic_helper_page_flip,
.get_vblank_counter = vmw_get_vblank_counter,
.enable_vblank = vmw_enable_vblank,
.disable_vblank = vmw_disable_vblank,
};
@ -1591,7 +1587,6 @@ vmw_stdu_primary_plane_atomic_update(struct drm_plane *plane,
struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
struct drm_crtc *crtc = new_state->crtc;
struct vmw_screen_target_display_unit *stdu;
struct drm_pending_vblank_event *event;
struct vmw_fence_obj *fence = NULL;
struct vmw_private *dev_priv;
int ret;
@ -1640,23 +1635,6 @@ vmw_stdu_primary_plane_atomic_update(struct drm_plane *plane,
return;
}
/* In case of error, vblank event is send in vmw_du_crtc_atomic_flush */
event = crtc->state->event;
if (event && fence) {
struct drm_file *file_priv = event->base.file_priv;
ret = vmw_event_fence_action_queue(file_priv,
fence,
&event->base,
&event->event.vbl.tv_sec,
&event->event.vbl.tv_usec,
true);
if (ret)
DRM_ERROR("Failed to queue event on fence.\n");
else
crtc->state->event = NULL;
}
if (fence)
vmw_fence_obj_unreference(&fence);
}
@ -1883,10 +1861,6 @@ int vmw_kms_stdu_init_display(struct vmw_private *dev_priv)
if (!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS))
return -ENOSYS;
ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
if (unlikely(ret != 0))
return ret;
dev_priv->active_display_unit = vmw_du_screen_target;
for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) {