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vmwgfx: Add functionality to get 3D caps

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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>
This commit is contained in:
Thomas Hellstrom
2011-09-01 20:18:41 +00:00
committed by Dave Airlie
parent 07999a7e0e
commit f63f6a59d3
4 changed files with 80 additions and 0 deletions
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48
drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
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@@ -54,6 +54,13 @@ int vmw_getparam_ioctl(struct drm_device *dev, void *data,
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 @@ int vmw_getparam_ioctl(struct drm_device *dev, void *data,
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;
}