drm: make drm_io_prot static.

[powerpc.git] / drivers / char / drm / drm_vm.c

diff --git a/drivers/char/drm/drm_vm.c b/drivers/char/drm/drm_vm.c
index b9cfc07..239ac33 100644 (file)
--- a/drivers/char/drm/drm_vm.c
+++ b/drivers/char/drm/drm_vm.c
@@ -41,6 +41,30 @@
 static void drm_vm_open(struct vm_area_struct *vma);
 static void drm_vm_close(struct vm_area_struct *vma);
 
+static pgprot_t drm_io_prot(uint32_t map_type, struct vm_area_struct *vma)
+{
+       pgprot_t tmp = vm_get_page_prot(vma->vm_flags);
+
+#if defined(__i386__) || defined(__x86_64__)
+       if (boot_cpu_data.x86 > 3 && map_type != _DRM_AGP) {
+               pgprot_val(tmp) |= _PAGE_PCD;
+               pgprot_val(tmp) &= ~_PAGE_PWT;
+       }
+#elif defined(__powerpc__)
+       pgprot_val(tmp) |= _PAGE_NO_CACHE;
+       if (map_type == _DRM_REGISTERS)
+               pgprot_val(tmp) |= _PAGE_GUARDED;
+#endif
+#if defined(__ia64__)
+       if (efi_range_is_wc(vma->vm_start, vma->vm_end -
+                                   vma->vm_start))
+               tmp = pgprot_writecombine(tmp);
+       else
+               tmp = pgprot_noncached(tmp);
+#endif
+       return tmp;
+}
+
 /**
  * \c nopage method for AGP virtual memory.
  *
@@ -70,7 +94,7 @@ static __inline__ struct page *drm_do_vm_nopage(struct vm_area_struct *vma,
        if (!dev->agp || !dev->agp->cant_use_aperture)
                goto vm_nopage_error;
 
-       if (drm_ht_find_item(&dev->map_hash, vma->vm_pgoff << PAGE_SHIFT, &hash))
+       if (drm_ht_find_item(&dev->map_hash, vma->vm_pgoff, &hash))
                goto vm_nopage_error;
 
        r_list = drm_hash_entry(hash, drm_map_list_t, hash);
@@ -227,7 +251,7 @@ static void drm_vm_shm_close(struct vm_area_struct *vma)
                                                           map->size);
                                        DRM_DEBUG("mtrr_del = %d\n", retcode);
                                }
-                               drm_ioremapfree(map->handle, map->size, dev);
+                               iounmap(map->handle);
                                break;
                        case _DRM_SHM:
                                vfree(map->handle);
@@ -463,8 +487,8 @@ static int drm_mmap_dma(struct file *filp, struct vm_area_struct *vma)
        lock_kernel();
        dev = priv->head->dev;
        dma = dev->dma;
-       DRM_DEBUG("start = 0x%lx, end = 0x%lx, offset = 0x%lx\n",
-                 vma->vm_start, vma->vm_end, vma->vm_pgoff << PAGE_SHIFT);
+       DRM_DEBUG("start = 0x%lx, end = 0x%lx, page offset = 0x%lx\n",
+                 vma->vm_start, vma->vm_end, vma->vm_pgoff);
 
        /* Length must match exact page count */
        if (!dma || (length >> PAGE_SHIFT) != dma->page_count) {
@@ -537,8 +561,8 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma)
        unsigned long offset = 0;
        drm_hash_item_t *hash;
 
-       DRM_DEBUG("start = 0x%lx, end = 0x%lx, offset = 0x%lx\n",
-                 vma->vm_start, vma->vm_end, vma->vm_pgoff << PAGE_SHIFT);
+       DRM_DEBUG("start = 0x%lx, end = 0x%lx, page offset = 0x%lx\n",
+                 vma->vm_start, vma->vm_end, vma->vm_pgoff);
 
        if (!priv->authenticated)
                return -EACCES;
@@ -547,7 +571,7 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma)
         * the AGP mapped at physical address 0
         * --BenH.
         */
-       if (!(vma->vm_pgoff << PAGE_SHIFT)
+       if (!vma->vm_pgoff
 #if __OS_HAS_AGP
            && (!dev->agp
                || dev->agp->agp_info.device->vendor != PCI_VENDOR_ID_APPLE)
@@ -555,7 +579,7 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma)
            )
                return drm_mmap_dma(filp, vma);
 
-       if (drm_ht_find_item(&dev->map_hash, vma->vm_pgoff << PAGE_SHIFT, &hash)) {
+       if (drm_ht_find_item(&dev->map_hash, vma->vm_pgoff, &hash)) {
                DRM_ERROR("Could not find map\n");
                return -EINVAL;
        }
@@ -565,7 +589,7 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma)
                return -EPERM;
 
        /* Check for valid size. */
-       if (map->size != vma->vm_end - vma->vm_start)
+       if (map->size < vma->vm_end - vma->vm_start)
                return -EINVAL;
 
        if (!capable(CAP_SYS_ADMIN) && (map->flags & _DRM_READ_ONLY)) {
@@ -600,25 +624,9 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma)
                /* fall through to _DRM_FRAME_BUFFER... */
        case _DRM_FRAME_BUFFER:
        case _DRM_REGISTERS:
-#if defined(__i386__) || defined(__x86_64__)
-               if (boot_cpu_data.x86 > 3 && map->type != _DRM_AGP) {
-                       pgprot_val(vma->vm_page_prot) |= _PAGE_PCD;
-                       pgprot_val(vma->vm_page_prot) &= ~_PAGE_PWT;
-               }
-#elif defined(__powerpc__)
-               pgprot_val(vma->vm_page_prot) |= _PAGE_NO_CACHE;
-               if (map->type == _DRM_REGISTERS)
-                       pgprot_val(vma->vm_page_prot) |= _PAGE_GUARDED;
-#endif
-               vma->vm_flags |= VM_IO; /* not in core dump */
-#if defined(__ia64__)
-               if (efi_range_is_wc(vma->vm_start, vma->vm_end - vma->vm_start))
-                       vma->vm_page_prot =
-                           pgprot_writecombine(vma->vm_page_prot);
-               else
-                       vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-#endif
                offset = dev->driver->get_reg_ofs(dev);
+               vma->vm_flags |= VM_IO; /* not in core dump */
+               vma->vm_page_prot = drm_io_prot(map->type, vma);
 #ifdef __sparc__
                vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
                if (io_remap_pfn_range(vma, vma->vm_start,