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authorZack Rusin <zackr@vmware.com>2022-03-02 18:24:26 +0300
committerZack Rusin <zackr@vmware.com>2022-03-11 21:29:38 +0300
commitb861de246912e10c5bda32cb100bff429a5e1ec4 (patch)
treed397c5439ca5715a0062170d46fc1cedf6e4715f /drivers/gpu/drm/vmwgfx
parent32160e6a98f33cd96fde52cd56b9b758b59d3603 (diff)
downloadlinux-b861de246912e10c5bda32cb100bff429a5e1ec4.tar.xz
drm/vmwgfx: Stop using surface dma commands on most configurations
Initial version of guest backed objects in the host had some performance issues that made using surface-dma's instead of direct copies faster. Surface dma's force a migration to vram which at best is slow and at worst is impossible (e.g. on svga3 where there's not enough vram to migrate fb's to it). Slowly migrate away from surface dma's to direct copies by limiting their usage to systems with more than 32MB of vram. Signed-off-by: Zack Rusin <zackr@vmware.com> Reviewed-by: Maaz Mombasawala <mombasawalam@vmware.com> Reviewed-by: Martin Krastev <krastevm@vmware.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220302152426.885214-9-zack@kde.org
Diffstat (limited to 'drivers/gpu/drm/vmwgfx')
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c b/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
index 42b5ecb0c5e9..eb014b97d156 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
@@ -138,6 +138,11 @@ static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu);
* Screen Target Display Unit CRTC Functions
*****************************************************************************/
+static bool vmw_stdu_use_cpu_blit(const struct vmw_private *vmw)
+{
+ return !(vmw->capabilities & SVGA_CAP_3D) || vmw->vram_size < (32 * 1024 * 1024);
+}
+
/**
* vmw_stdu_crtc_destroy - cleans up the STDU
@@ -689,7 +694,7 @@ int vmw_kms_stdu_dma(struct vmw_private *dev_priv,
container_of(vfb, struct vmw_framebuffer_bo, base)->buffer;
struct vmw_stdu_dirty ddirty;
int ret;
- bool cpu_blit = !(dev_priv->capabilities & SVGA_CAP_3D);
+ bool cpu_blit = vmw_stdu_use_cpu_blit(dev_priv);
DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
/*
@@ -1164,7 +1169,7 @@ vmw_stdu_primary_plane_prepare_fb(struct drm_plane *plane,
* so cache these mappings
*/
if (vps->content_fb_type == SEPARATE_BO &&
- !(dev_priv->capabilities & SVGA_CAP_3D))
+ vmw_stdu_use_cpu_blit(dev_priv))
vps->cpp = new_fb->pitches[0] / new_fb->width;
return 0;
@@ -1368,7 +1373,7 @@ static int vmw_stdu_plane_update_bo(struct vmw_private *dev_priv,
bo_update.base.vfb = vfb;
bo_update.base.out_fence = out_fence;
bo_update.base.mutex = NULL;
- bo_update.base.cpu_blit = !(dev_priv->capabilities & SVGA_CAP_3D);
+ bo_update.base.cpu_blit = vmw_stdu_use_cpu_blit(dev_priv);
bo_update.base.intr = false;
/*