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path: root/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
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Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_drv.c')
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_drv.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index 9fcd8200d485..8d528fcf6e96 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -233,6 +233,7 @@ static int vmw_force_iommu;
static int vmw_restrict_iommu;
static int vmw_force_coherent;
static int vmw_restrict_dma_mask;
+static int vmw_assume_16bpp;
static int vmw_probe(struct pci_dev *, const struct pci_device_id *);
static void vmw_master_init(struct vmw_master *);
@@ -249,6 +250,8 @@ MODULE_PARM_DESC(force_coherent, "Force coherent TTM pages");
module_param_named(force_coherent, vmw_force_coherent, int, 0600);
MODULE_PARM_DESC(restrict_dma_mask, "Restrict DMA mask to 44 bits with IOMMU");
module_param_named(restrict_dma_mask, vmw_restrict_dma_mask, int, 0600);
+MODULE_PARM_DESC(assume_16bpp, "Assume 16-bpp when filtering modes");
+module_param_named(assume_16bpp, vmw_assume_16bpp, int, 0600);
static void vmw_print_capabilities(uint32_t capabilities)
@@ -660,6 +663,8 @@ static int vmw_driver_load(struct drm_device *dev, unsigned long chipset)
dev_priv->vram_start = pci_resource_start(dev->pdev, 1);
dev_priv->mmio_start = pci_resource_start(dev->pdev, 2);
+ dev_priv->assume_16bpp = !!vmw_assume_16bpp;
+
dev_priv->enable_fb = enable_fbdev;
vmw_write(dev_priv, SVGA_REG_ID, SVGA_ID_2);
@@ -706,6 +711,13 @@ static int vmw_driver_load(struct drm_device *dev, unsigned long chipset)
vmw_read(dev_priv,
SVGA_REG_SUGGESTED_GBOBJECT_MEM_SIZE_KB);
+ /*
+ * Workaround for low memory 2D VMs to compensate for the
+ * allocation taken by fbdev
+ */
+ if (!(dev_priv->capabilities & SVGA_CAP_3D))
+ mem_size *= 2;
+
dev_priv->max_mob_pages = mem_size * 1024 / PAGE_SIZE;
dev_priv->prim_bb_mem =
vmw_read(dev_priv,