Pull sn-features into release branch
[sfrench/cifs-2.6.git] / drivers / char / drm / drm_vm.c
index 621220f3f37207492ed8bfccdcef7d5e94cc0fda..ced4215e2275e71dad67a2db787054bb03bfc12f 100644 (file)
@@ -73,12 +73,13 @@ static __inline__ struct page *drm_do_vm_nopage(struct vm_area_struct *vma,
                r_list = list_entry(list, drm_map_list_t, head);
                map = r_list->map;
                if (!map) continue;
-               if (map->offset == VM_OFFSET(vma)) break;
+               if (r_list->user_token == VM_OFFSET(vma))
+                       break;
        }
 
        if (map && map->type == _DRM_AGP) {
                unsigned long offset = address - vma->vm_start;
-               unsigned long baddr = VM_OFFSET(vma) + offset;
+               unsigned long baddr = map->offset + offset;
                struct drm_agp_mem *agpmem;
                struct page *page;
 
@@ -210,6 +211,8 @@ static void drm_vm_shm_close(struct vm_area_struct *vma)
                }
 
                if(!found_maps) {
+                       drm_dma_handle_t dmah;
+
                        switch (map->type) {
                        case _DRM_REGISTERS:
                        case _DRM_FRAME_BUFFER:
@@ -228,6 +231,12 @@ static void drm_vm_shm_close(struct vm_area_struct *vma)
                        case _DRM_AGP:
                        case _DRM_SCATTER_GATHER:
                                break;
+                       case _DRM_CONSISTENT:
+                               dmah.vaddr = map->handle;
+                               dmah.busaddr = map->offset;
+                               dmah.size = map->size;
+                               __drm_pci_free(dev, &dmah);
+                               break;
                        }
                        drm_free(map, sizeof(*map), DRM_MEM_MAPS);
                }
@@ -296,7 +305,7 @@ static __inline__ struct page *drm_do_vm_sg_nopage(struct vm_area_struct *vma,
 
 
        offset = address - vma->vm_start;
-       map_offset = map->offset - dev->sg->handle;
+       map_offset = map->offset - (unsigned long)dev->sg->virtual;
        page_offset = (offset >> PAGE_SHIFT) + (map_offset >> PAGE_SHIFT);
        page = entry->pagelist[page_offset];
        get_page(page);
@@ -305,8 +314,6 @@ static __inline__ struct page *drm_do_vm_sg_nopage(struct vm_area_struct *vma,
 }
 
 
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,0)
-
 static struct page *drm_vm_nopage(struct vm_area_struct *vma,
                                   unsigned long address,
                                   int *type) {
@@ -335,35 +342,6 @@ static struct page *drm_vm_sg_nopage(struct vm_area_struct *vma,
        return drm_do_vm_sg_nopage(vma, address);
 }
 
-#else  /* LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,0) */
-
-static struct page *drm_vm_nopage(struct vm_area_struct *vma,
-                                  unsigned long address,
-                                  int unused) {
-       return drm_do_vm_nopage(vma, address);
-}
-
-static struct page *drm_vm_shm_nopage(struct vm_area_struct *vma,
-                                      unsigned long address,
-                                      int unused) {
-       return drm_do_vm_shm_nopage(vma, address);
-}
-
-static struct page *drm_vm_dma_nopage(struct vm_area_struct *vma,
-                                      unsigned long address,
-                                      int unused) {
-       return drm_do_vm_dma_nopage(vma, address);
-}
-
-static struct page *drm_vm_sg_nopage(struct vm_area_struct *vma,
-                                     unsigned long address,
-                                     int unused) {
-       return drm_do_vm_sg_nopage(vma, address);
-}
-
-#endif
-
-
 /** AGP virtual memory operations */
 static struct vm_operations_struct   drm_vm_ops = {
        .nopage = drm_vm_nopage,
@@ -487,11 +465,7 @@ static int drm_mmap_dma(struct file *filp, struct vm_area_struct *vma)
 
        vma->vm_ops   = &drm_vm_dma_ops;
 
-#if LINUX_VERSION_CODE <= 0x02040e /* KERNEL_VERSION(2,4,14) */
-       vma->vm_flags |= VM_LOCKED | VM_SHM; /* Don't swap */
-#else
        vma->vm_flags |= VM_RESERVED; /* Don't swap */
-#endif
 
        vma->vm_file  =  filp;  /* Needed for drm_vm_open() */
        drm_vm_open(vma);
@@ -560,13 +534,12 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma)
                                   for performance, even if the list was a
                                   bit longer. */
        list_for_each(list, &dev->maplist->head) {
-               unsigned long off;
 
                r_list = list_entry(list, drm_map_list_t, head);
                map = r_list->map;
                if (!map) continue;
-               off = dev->driver->get_map_ofs(map);
-               if (off == VM_OFFSET(vma)) break;
+               if (r_list->user_token == VM_OFFSET(vma))
+                       break;
        }
 
        if (!map || ((map->flags&_DRM_RESTRICTED) && !capable(CAP_SYS_ADMIN)))
@@ -605,17 +578,17 @@ 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 (VM_OFFSET(vma) >= __pa(high_memory)) {
 #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;
-                       }
+               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 | _PAGE_GUARDED;
+               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 */
-               }
+               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))
@@ -628,12 +601,12 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma)
                offset = dev->driver->get_reg_ofs(dev);
 #ifdef __sparc__
                if (io_remap_pfn_range(DRM_RPR_ARG(vma) vma->vm_start,
-                                       (VM_OFFSET(vma) + offset) >> PAGE_SHIFT,
+                                       (map->offset + offset) >> PAGE_SHIFT,
                                        vma->vm_end - vma->vm_start,
                                        vma->vm_page_prot))
 #else
                if (io_remap_pfn_range(vma, vma->vm_start,
-                                    (VM_OFFSET(vma) + offset) >> PAGE_SHIFT,
+                                    (map->offset + offset) >> PAGE_SHIFT,
                                     vma->vm_end - vma->vm_start,
                                     vma->vm_page_prot))
 #endif
@@ -641,37 +614,28 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma)
                DRM_DEBUG("   Type = %d; start = 0x%lx, end = 0x%lx,"
                          " offset = 0x%lx\n",
                          map->type,
-                         vma->vm_start, vma->vm_end, VM_OFFSET(vma) + offset);
+                         vma->vm_start, vma->vm_end, map->offset + offset);
                vma->vm_ops = &drm_vm_ops;
                break;
        case _DRM_SHM:
+       case _DRM_CONSISTENT:
+               /* Consistent memory is really like shared memory. It's only
+                * allocate in a different way */
                vma->vm_ops = &drm_vm_shm_ops;
                vma->vm_private_data = (void *)map;
                                /* Don't let this area swap.  Change when
                                   DRM_KERNEL advisory is supported. */
-#if LINUX_VERSION_CODE <= 0x02040e /* KERNEL_VERSION(2,4,14) */
-               vma->vm_flags |= VM_LOCKED;
-#else
                vma->vm_flags |= VM_RESERVED;
-#endif
                break;
        case _DRM_SCATTER_GATHER:
                vma->vm_ops = &drm_vm_sg_ops;
                vma->vm_private_data = (void *)map;
-#if LINUX_VERSION_CODE <= 0x02040e /* KERNEL_VERSION(2,4,14) */
-               vma->vm_flags |= VM_LOCKED;
-#else
                vma->vm_flags |= VM_RESERVED;
-#endif
                 break;
        default:
                return -EINVAL; /* This should never happen. */
        }
-#if LINUX_VERSION_CODE <= 0x02040e /* KERNEL_VERSION(2,4,14) */
-       vma->vm_flags |= VM_LOCKED | VM_SHM; /* Don't swap */
-#else
        vma->vm_flags |= VM_RESERVED; /* Don't swap */
-#endif
 
        vma->vm_file  =  filp;  /* Needed for drm_vm_open() */
        drm_vm_open(vma);