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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>
This commit is contained in:
Thomas Hellstrom 2011-09-01 20:18:40 +00:00 committed by Dave Airlie
parent fe0f5c6576
commit 07999a7e0e
5 changed files with 5 additions and 59 deletions
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1
drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
View File

@ -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);

48
drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
View File

@ -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;
}

3
drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
View File

@ -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;

5
drivers/gpu/drm/vmwgfx/vmwgfx_ttm_glue.c
View File

@ -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;

7
include/drm/vmwgfx_drm.h
View File

@ -65,10 +65,9 @@
#define DRM_VMW_PARAM_NUM_STREAMS 0
#define DRM_VMW_PARAM_NUM_FREE_STREAMS 1
#define DRM_VMW_PARAM_3D 2
#define DRM_VMW_PARAM_FIFO_OFFSET 3
#define DRM_VMW_PARAM_HW_CAPS 4
#define DRM_VMW_PARAM_FIFO_CAPS 5
#define DRM_VMW_PARAM_MAX_FB_SIZE 6
#define DRM_VMW_PARAM_HW_CAPS 3
#define DRM_VMW_PARAM_FIFO_CAPS 4
#define DRM_VMW_PARAM_MAX_FB_SIZE 5
/**
* struct drm_vmw_getparam_arg