vmwgfx: Remove the possibility to map the fifo from user-space

This was previously used by user-space to check whether a fence
sequence had passed or not.
With fence objects that's not needed anymore.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

4 files changed, 2 insertions, 55 deletions

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index a99400f10531..39be79619068 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -411,7 +411,6 @@ extern void vmw_fifo_commit(struct vmw_private *dev_priv, uint32_t bytes);
 extern int vmw_fifo_send_fence(struct vmw_private *dev_priv,
                                uint32_t *sequence);
 extern void vmw_fifo_ping_host(struct vmw_private *dev_priv, uint32_t reason);
-extern int vmw_fifo_mmap(struct file *filp, struct vm_area_struct *vma);
 extern bool vmw_fifo_have_3d(struct vmw_private *dev_priv);
 extern bool vmw_fifo_have_pitchlock(struct vmw_private *dev_priv);
 
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
index d031c555fa47..aae01b9ae4dc 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
@@ -491,51 +491,3 @@ int vmw_fifo_send_fence(struct vmw_private *dev_priv, uint32_t *sequence)
 out_err:
         return ret;
 }
-
-/**
- * Map the first page of the FIFO read-only to user-space.
- */
-
-static int vmw_fifo_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
-{
-        int ret;
-        unsigned long address = (unsigned long)vmf->virtual_address;
-
-        if (address != vma->vm_start)
-                return VM_FAULT_SIGBUS;
-
-        ret = vm_insert_pfn(vma, address, vma->vm_pgoff);
-        if (likely(ret == -EBUSY || ret == 0))
-                return VM_FAULT_NOPAGE;
-        else if (ret == -ENOMEM)
-                return VM_FAULT_OOM;
-
-        return VM_FAULT_SIGBUS;
-}
-
-static struct vm_operations_struct vmw_fifo_vm_ops = {
-        .fault = vmw_fifo_vm_fault,
-        .open = NULL,
-        .close = NULL
-};
-
-int vmw_fifo_mmap(struct file *filp, struct vm_area_struct *vma)
-{
-        struct drm_file *file_priv;
-        struct vmw_private *dev_priv;
-
-        file_priv = filp->private_data;
-        dev_priv = vmw_priv(file_priv->minor->dev);
-
-        if (vma->vm_pgoff != (dev_priv->mmio_start >> PAGE_SHIFT) ||
-            (vma->vm_end - vma->vm_start) != PAGE_SIZE)
-                return -EINVAL;
-
-        vma->vm_flags &= ~(VM_WRITE | VM_MAYWRITE);
-        vma->vm_flags |= VM_IO | VM_PFNMAP | VM_DONTEXPAND | VM_SHARED;
-        vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
-        vma->vm_page_prot = ttm_io_prot(TTM_PL_FLAG_UNCACHED,
-                                        vma->vm_page_prot);
-        vma->vm_ops = &vmw_fifo_vm_ops;
-        return 0;
-}
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
index f1b9175bee94..74b1dc8a7cdd 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
@@ -45,9 +45,6 @@ int vmw_getparam_ioctl(struct drm_device *dev, void *data,
         case DRM_VMW_PARAM_3D:
                 param->value = vmw_fifo_have_3d(dev_priv) ? 1 : 0;
                 break;
-        case DRM_VMW_PARAM_FIFO_OFFSET:
-                param->value = dev_priv->mmio_start;
-                break;
         case DRM_VMW_PARAM_HW_CAPS:
                 param->value = dev_priv->capabilities;
                 break;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_glue.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_glue.c
index 1e8eedd901e0..d3c11f5184f3 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_glue.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_glue.c
@@ -34,9 +34,8 @@ int vmw_mmap(struct file *filp, struct vm_area_struct *vma)
         struct vmw_private *dev_priv;
 
         if (unlikely(vma->vm_pgoff < VMWGFX_FILE_PAGE_OFFSET)) {
-                if (vmw_fifo_mmap(filp, vma) == 0)
-                        return 0;
-                return drm_mmap(filp, vma);
+                DRM_ERROR("Illegal attempt to mmap old fifo space.\n");
+                return -EINVAL;
         }
 
         file_priv = filp->private_data;