vmwgfx: Add functionality to get 3D caps
Since we don't allow user-space to map the fifo anymore,
add a parameter to get fifo hw version and
an ioctl to copy the 3D capabilities.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecranz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
index 74b1dc8..5ecf966 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
@@ -54,6 +54,13 @@
case DRM_VMW_PARAM_MAX_FB_SIZE:
param->value = dev_priv->vram_size;
break;
+ case DRM_VMW_PARAM_FIFO_HW_VERSION:
+ {
+ __le32 __iomem *fifo_mem = dev_priv->mmio_virt;
+
+ param->value = ioread32(fifo_mem + SVGA_FIFO_3D_HWVERSION);
+ break;
+ }
default:
DRM_ERROR("Illegal vmwgfx get param request: %d\n",
param->param);
@@ -62,3 +69,44 @@
return 0;
}
+
+
+int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_vmw_get_3d_cap_arg *arg =
+ (struct drm_vmw_get_3d_cap_arg *) data;
+ struct vmw_private *dev_priv = vmw_priv(dev);
+ uint32_t size;
+ __le32 __iomem *fifo_mem;
+ void __user *buffer = (void __user *)((unsigned long)(arg->buffer));
+ void *bounce;
+ int ret;
+
+ if (unlikely(arg->pad64 != 0)) {
+ DRM_ERROR("Illegal GET_3D_CAP argument.\n");
+ return -EINVAL;
+ }
+
+ size = (SVGA_FIFO_3D_CAPS_LAST - SVGA_FIFO_3D_CAPS + 1) << 2;
+
+ if (arg->max_size < size)
+ size = arg->max_size;
+
+ bounce = vmalloc(size);
+ if (unlikely(bounce == NULL)) {
+ DRM_ERROR("Failed to allocate bounce buffer for 3D caps.\n");
+ return -ENOMEM;
+ }
+
+ fifo_mem = dev_priv->mmio_virt;
+ memcpy_fromio(bounce, &fifo_mem[SVGA_FIFO_3D_CAPS], size);
+
+ ret = copy_to_user(buffer, bounce, size);
+ vfree(bounce);
+
+ if (unlikely(ret != 0))
+ DRM_ERROR("Failed to report 3D caps info.\n");
+
+ return ret;
+}