diff options
| author | Thomas Hellstrom <thellstrom@vmware.com> | 2020-01-15 21:48:19 +0100 |
|---|---|---|
| committer | Thomas Hellstrom <thellstrom@vmware.com> | 2020-03-12 12:00:07 +0100 |
| commit | 81a00960d3fa83bbff9939ff52e89f0b74801937 (patch) | |
| tree | 5351b4a0fabb6b93fca9d839b206c43254419efa /drivers/gpu/drm/vmwgfx | |
| parent | d3bd37f587b4438d47751d0f1d5aaae3d39bd416 (diff) | |
drm/vmwgfx: Fix the refuse_dma mode when using guest-backed objects
When we refuse DMA from system pages for whatever reason, we don't
handle that correctly when guest-backed objects was enabled.
Since guest-backed objects by definition require DMA to and from
system pages, disable all functionality that relies on them.
That basically amounts to 3D acceleration and screen targets.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Diffstat (limited to 'drivers/gpu/drm/vmwgfx')
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 6 | ||||
| -rw-r--r-- | drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c | 2 |
3 files changed, 7 insertions, 4 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c index 065015d2a8f6..3b41cf63110a 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c @@ -1241,7 +1241,8 @@ int vmw_cmdbuf_set_pool_size(struct vmw_cmdbuf_man *man, * actually call into the already enabled manager, when * binding the MOB. */ - if (!(dev_priv->capabilities & SVGA_CAP_DX)) + if (!(dev_priv->capabilities & SVGA_CAP_DX) || + !dev_priv->has_mob) return -ENOMEM; ret = ttm_bo_create(&dev_priv->bdev, size, ttm_bo_type_device, diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c index cf3dc56d7cf4..f2ec3155468d 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c @@ -682,8 +682,10 @@ static int vmw_driver_load(struct drm_device *dev, unsigned long chipset) ret = vmw_dma_select_mode(dev_priv); if (unlikely(ret != 0)) { - DRM_INFO("Restricting capabilities due to IOMMU setup.\n"); + DRM_INFO("Restricting capabilities since DMA not available.\n"); refuse_dma = true; + if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS) + DRM_INFO("Disabling 3D acceleration.\n"); } dev_priv->vram_size = vmw_read(dev_priv, SVGA_REG_VRAM_SIZE); @@ -866,7 +868,7 @@ static int vmw_driver_load(struct drm_device *dev, unsigned long chipset) dev_priv->has_gmr = false; } - if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS) { + if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS && !refuse_dma) { dev_priv->has_mob = true; if (ttm_bo_init_mm(&dev_priv->bdev, VMW_PL_MOB, VMW_PL_MOB) != 0) { diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c b/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c index 570687a1a327..68aecb6d9f87 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c @@ -1888,7 +1888,7 @@ int vmw_kms_stdu_init_display(struct vmw_private *dev_priv) /* Do nothing if Screen Target support is turned off */ - if (!VMWGFX_ENABLE_SCREEN_TARGET_OTABLE) + if (!VMWGFX_ENABLE_SCREEN_TARGET_OTABLE || !dev_priv->has_mob) return -ENOSYS; if (!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS)) |