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drm/vmwgfx: Diff cursors when using cmds

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Extend the cursor diffing support to support the command-path.

Signed-off-by: Michael Banack <banackm@vmware.com>
Signed-off-by: Zack Rusin <zackr@vmware.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221022040236.616490-10-zack@kde.org
This commit is contained in:
Michael Banack 2022-10-22 00:02:28 -04:00 committed by Zack Rusin
parent 92f59ac41c
commit bb6780aa5a
2 changed files with 61 additions and 59 deletions
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118
drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
View File

@ -53,8 +53,10 @@ void vmw_du_cleanup(struct vmw_display_unit *du)
*/
static int vmw_du_cursor_plane_unmap_cm(struct vmw_plane_state *vps);
static void vmw_cursor_write_mobid(struct vmw_private *dev_priv,
struct vmw_plane_state *vps);
static void vmw_cursor_update_mob(struct vmw_private *dev_priv,
struct vmw_plane_state *vps,
u32 *image, u32 width, u32 height,
u32 hotspotX, u32 hotspotY);
struct vmw_svga_fifo_cmd_define_cursor {
u32 cmd;
@ -118,7 +120,10 @@ static void vmw_cursor_update_image(struct vmw_private *dev_priv,
u32 hotspotX, u32 hotspotY)
{
if (vps->cursor.bo)
vmw_cursor_write_mobid(dev_priv, vps);
vmw_cursor_update_mob(dev_priv, vps, image,
vps->base.crtc_w, vps->base.crtc_h,
hotspotX, hotspotY);
else
vmw_send_define_cursor_cmd(dev_priv, image, width, height,
hotspotX, hotspotY);
@ -163,61 +168,58 @@ static void vmw_cursor_update_mob(struct vmw_private *dev_priv,
alpha_header->height = height;
memcpy(header + 1, image, image_size);
}
/**
* vmw_cursor_write_mobid - Update cursor via CursorMob mechanism
*
* Called from inside vmw_du_cursor_plane_atomic_update to actually
* make the cursor-image live.
*
* @dev_priv: device to work with
* @vps: DRM plane_state
*/
static void vmw_cursor_write_mobid(struct vmw_private *dev_priv,
struct vmw_plane_state *vps)
{
vmw_write(dev_priv, SVGA_REG_CURSOR_MOBID,
vps->cursor.bo->resource->start);
}
static u32 vmw_du_cursor_mob_size(u32 w, u32 h)
{
return w * h * sizeof(u32) + sizeof(SVGAGBCursorHeader);
}
static bool vmw_du_cursor_plane_mob_has_changed(struct vmw_plane_state *old_vps,
struct vmw_plane_state *new_vps)
/**
* vmw_du_cursor_plane_acquire_image -- Acquire the image data
* @vps: cursor plane state
*/
static u32 *vmw_du_cursor_plane_acquire_image(struct vmw_plane_state *vps)
{
void *old_mob;
void *new_mob;
bool dummy;
if (vps->surf) {
if (vps->surf_mapped)
return vmw_bo_map_and_cache(vps->surf->res.backup);
return vps->surf->snooper.image;
} else if (vps->bo)
return ttm_kmap_obj_virtual(&vps->bo->map, &dummy);
return NULL;
}
static bool vmw_du_cursor_plane_has_changed(struct vmw_plane_state *old_vps,
struct vmw_plane_state *new_vps)
{
void *old_image;
void *new_image;
u32 size;
// If either of them aren't using CursorMobs, assume changed.
if (!old_vps->cursor.bo || !new_vps->cursor.bo)
return true;
// If either of them failed to map, assume changed.
if (!old_vps->cursor.mapped || !new_vps->cursor.mapped)
return true;
bool changed;
if (old_vps->base.crtc_w != new_vps->base.crtc_w ||
old_vps->base.crtc_h != new_vps->base.crtc_h)
return true;
size = vmw_du_cursor_mob_size(new_vps->base.crtc_w,
new_vps->base.crtc_h);
if (old_vps->cursor.hotspot_x != new_vps->cursor.hotspot_x ||
old_vps->cursor.hotspot_y != new_vps->cursor.hotspot_y)
return true;
old_mob = ttm_kmap_obj_virtual(&old_vps->cursor.map, &dummy);
new_mob = ttm_kmap_obj_virtual(&new_vps->cursor.map, &dummy);
size = new_vps->base.crtc_w * new_vps->base.crtc_h * sizeof(u32);
if (memcmp(old_mob, new_mob, size) != 0)
return true;
old_image = vmw_du_cursor_plane_acquire_image(old_vps);
new_image = vmw_du_cursor_plane_acquire_image(new_vps);
return false;
changed = false;
if (old_image && new_image)
changed = memcmp(old_image, new_image, size) != 0;
return changed;
}
static void vmw_du_destroy_cursor_mob(struct ttm_buffer_object **bo)
@ -745,6 +747,7 @@ vmw_du_cursor_plane_prepare_fb(struct drm_plane *plane,
return -ENOMEM;
} else if (vps->surf && !vps->bo && vps->surf->res.backup) {
WARN_ON(vps->surf->snooper.image);
ret = ttm_bo_reserve(&vps->surf->res.backup->base, true, false,
NULL);
if (unlikely(ret != 0))
@ -778,7 +781,6 @@ vmw_du_cursor_plane_atomic_update(struct drm_plane *plane,
struct vmw_plane_state *old_vps = vmw_plane_state_to_vps(old_state);
s32 hotspot_x, hotspot_y;
bool dummy;
void *image;
hotspot_x = du->hotspot_x;
hotspot_y = du->hotspot_y;
@ -796,36 +798,34 @@ vmw_du_cursor_plane_atomic_update(struct drm_plane *plane,
return;
}
vps->cursor.hotspot_x = hotspot_x;
vps->cursor.hotspot_y = hotspot_y;
if (vps->surf) {
du->cursor_age = du->cursor_surface->snooper.age;
image = vps->surf->snooper.image;
if (vps->surf_mapped)
image = vmw_bo_map_and_cache(vps->surf->res.backup);
} else
image = ttm_kmap_obj_virtual(&vps->bo->map, &dummy);
}
if (vps->cursor.bo)
vmw_cursor_update_mob(dev_priv, vps, image,
new_state->crtc_w,
new_state->crtc_h,
hotspot_x, hotspot_y);
if (!vmw_du_cursor_plane_mob_has_changed(old_vps, vps)) {
if (!vmw_du_cursor_plane_has_changed(old_vps, vps)) {
/*
* If it hasn't changed, avoid making the device do extra
* work by keeping the old mob active.
* work by keeping the old cursor active.
*/
struct vmw_cursor_plane_state tmp = old_vps->cursor;
old_vps->cursor = vps->cursor;
vps->cursor = tmp;
} else if (image)
vmw_cursor_update_image(dev_priv, vps, image,
new_state->crtc_w,
new_state->crtc_h,
hotspot_x, hotspot_y);
} else {
void *image = vmw_du_cursor_plane_acquire_image(vps);
if (image)
vmw_cursor_update_image(dev_priv, vps, image,
new_state->crtc_w,
new_state->crtc_h,
hotspot_x, hotspot_y);
}
if (image && vps->bo)
atomic_dec(&vps->bo->base_mapped_count);
if (vps->bo) {
if (ttm_kmap_obj_virtual(&vps->bo->map, &dummy))
atomic_dec(&vps->bo->base_mapped_count);
}
du->cursor_x = new_state->crtc_x + du->set_gui_x;
du->cursor_y = new_state->crtc_y + du->set_gui_y;

2
drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
View File

@ -276,6 +276,8 @@ struct vmw_cursor_plane_state {
struct ttm_buffer_object *bo;
struct ttm_bo_kmap_obj map;
bool mapped;
s32 hotspot_x;
s32 hotspot_y;
};
/**