Adapt to nopage() prototype change in Linux 2.6.1.

Reviewed by: Arjan van de Ven <arjanv@redhat.com>, additional feedback from
    William Lee Irwin III and Linus Torvalds.

2 files changed, 114 insertions, 55 deletions

diff --git a/linux/drmP.h b/linux/drmP.h
index 1fe9c72c5..b7b346d4a 100644
--- a/linux/drmP.h
+++ b/linux/drmP.h
@@ -309,6 +309,19 @@ static inline struct page * vmalloc_to_page(void * vmalloc_addr)
 			DRM(ioremapfree)( (map)->handle, (map)->size, (dev) );	\
 	} while (0)
 
+#ifndef VMAP_4_ARGS
+
+#define DRM_IOREMAPAGP(map, dev)						\
+	(map)->handle = DRM(ioremap_agp)( (map)->offset, (map)->size, (dev) )
+
+#define DRM_IOREMAPAGPFREE(map)						\
+	do {								\
+		if ( (map)->handle && (map)->size )			\
+			DRM(ioremap_agp_free)( (map)->handle, (map)->size );	\
+	} while (0)
+
+#endif
+
 /**
  * Find mapping.
  *
@@ -806,18 +819,6 @@ extern int	     DRM(flush)(struct file *filp);
 extern int	     DRM(fasync)(int fd, struct file *filp, int on);
 
 				/* Mapping support (drm_vm.h) */
-extern struct page *DRM(vm_nopage)(struct vm_area_struct *vma,
-				   unsigned long address,
-				   int write_access);
-extern struct page *DRM(vm_shm_nopage)(struct vm_area_struct *vma,
-				       unsigned long address,
-				       int write_access);
-extern struct page *DRM(vm_dma_nopage)(struct vm_area_struct *vma,
-				       unsigned long address,
-				       int write_access);
-extern struct page *DRM(vm_sg_nopage)(struct vm_area_struct *vma,
-				      unsigned long address,
-				      int write_access);
 extern void	     DRM(vm_open)(struct vm_area_struct *vma);
 extern void	     DRM(vm_close)(struct vm_area_struct *vma);
 extern void	     DRM(vm_shm_close)(struct vm_area_struct *vma);
@@ -845,6 +846,10 @@ extern void	     *DRM(ioremap_nocache)(unsigned long offset, unsigned long size,
 extern void	     DRM(ioremapfree)(void *pt, unsigned long size, drm_device_t *dev);
 
 #if __REALLY_HAVE_AGP
+#ifndef VMAP_4_ARGS
+extern void	     *DRM(ioremap_agp)(unsigned long offset, unsigned long size, drm_device_t *dev);
+extern void	     DRM(ioremap_agp_free)(void *pt, unsigned long size);
+#endif
 extern DRM_AGP_MEM   *DRM(alloc_agp)(int pages, u32 type);
 extern int           DRM(free_agp)(DRM_AGP_MEM *handle, int pages);
 extern int           DRM(bind_agp)(DRM_AGP_MEM *handle, unsigned int start);
diff --git a/linux/drm_vm.h b/linux/drm_vm.h
index 8f4679f91..5b9759864 100644
--- a/linux/drm_vm.h
+++ b/linux/drm_vm.h
@@ -36,48 +36,19 @@
 #define __NO_VERSION__
 #include "drmP.h"
 
-/** AGP virtual memory operations */
-struct vm_operations_struct   DRM(vm_ops) = {
-	.nopage = DRM(vm_nopage),
-	.open	= DRM(vm_open),
-	.close	= DRM(vm_close),
-};
-
-/** Shared virtual memory operations */
-struct vm_operations_struct   DRM(vm_shm_ops) = {
-	.nopage = DRM(vm_shm_nopage),
-	.open	= DRM(vm_open),
-	.close	= DRM(vm_shm_close),
-};
-
-/** DMA virtual memory operations */
-struct vm_operations_struct   DRM(vm_dma_ops) = {
-	.nopage = DRM(vm_dma_nopage),
-	.open	= DRM(vm_open),
-	.close	= DRM(vm_close),
-};
-
-/** Scatter-gather virtual memory operations */
-struct vm_operations_struct   DRM(vm_sg_ops) = {
-	.nopage = DRM(vm_sg_nopage),
-	.open   = DRM(vm_open),
-	.close  = DRM(vm_close),
-};
 
 /**
  * \c nopage method for AGP virtual memory.
  *
  * \param vma virtual memory area.
  * \param address access address.
- * \param write_access sharing.
  * \return pointer to the page structure.
  * 
  * Find the right map and if it's AGP memory find the real physical page to
  * map, get the page, increment the use count and return it.
  */
-struct page *DRM(vm_nopage)(struct vm_area_struct *vma,
-			    unsigned long address,
-			    int write_access)
+static __inline__ struct page *DRM(do_vm_nopage)(struct vm_area_struct *vma,
+						 unsigned long address)
 {
 #if __REALLY_HAVE_AGP
 	drm_file_t *priv  = vma->vm_file->private_data;
@@ -147,15 +118,13 @@ vm_nopage_error:
  *
  * \param vma virtual memory area.
  * \param address access address.
- * \param write_access sharing.
  * \return pointer to the page structure.
  * 
  * Get the the mapping, find the real physical page to map, get the page, and
  * return it.
  */
-struct page *DRM(vm_shm_nopage)(struct vm_area_struct *vma,
-				unsigned long address,
-				int write_access)
+static __inline__ struct page *DRM(do_vm_shm_nopage)(struct vm_area_struct *vma,
+						     unsigned long address)
 {
 	drm_map_t	 *map	 = (drm_map_t *)vma->vm_private_data;
 	unsigned long	 offset;
@@ -262,14 +231,12 @@ void DRM(vm_shm_close)(struct vm_area_struct *vma)
  *
  * \param vma virtual memory area.
  * \param address access address.
- * \param write_access sharing.
  * \return pointer to the page structure.
  * 
  * Determine the page number from the page offset and get it from drm_device_dma::pagelist.
  */
-struct page *DRM(vm_dma_nopage)(struct vm_area_struct *vma,
-				unsigned long address,
-				int write_access)
+static __inline__ struct page *DRM(do_vm_dma_nopage)(struct vm_area_struct *vma,
+						     unsigned long address)
 {
 	drm_file_t	 *priv	 = vma->vm_file->private_data;
 	drm_device_t	 *dev	 = priv->dev;
@@ -298,14 +265,12 @@ struct page *DRM(vm_dma_nopage)(struct vm_area_struct *vma,
  *
  * \param vma virtual memory area.
  * \param address access address.
- * \param write_access sharing.
  * \return pointer to the page structure.
  * 
  * Determine the map offset from the page offset and get it from drm_sg_mem::pagelist.
  */
-struct page *DRM(vm_sg_nopage)(struct vm_area_struct *vma,
-			       unsigned long address,
-			       int write_access)
+static __inline__ struct page *DRM(do_vm_sg_nopage)(struct vm_area_struct *vma,
+						    unsigned long address)
 {
 	drm_map_t        *map    = (drm_map_t *)vma->vm_private_data;
 	drm_file_t *priv = vma->vm_file->private_data;
@@ -330,6 +295,95 @@ struct page *DRM(vm_sg_nopage)(struct vm_area_struct *vma,
 	return page;
 }
 
+
+#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) {
+	if (type) *type = VM_FAULT_MINOR;
+	return DRM(do_vm_nopage)(vma, address);
+}
+
+static struct page *DRM(vm_shm_nopage)(struct vm_area_struct *vma,
+				       unsigned long address,
+				       int *type) {
+	if (type) *type = VM_FAULT_MINOR;
+	return DRM(do_vm_shm_nopage)(vma, address);
+}
+
+static struct page *DRM(vm_dma_nopage)(struct vm_area_struct *vma,
+				       unsigned long address,
+				       int *type) {
+	if (type) *type = VM_FAULT_MINOR;
+	return DRM(do_vm_dma_nopage)(vma, address);
+}
+
+static struct page *DRM(vm_sg_nopage)(struct vm_area_struct *vma,
+				      unsigned long address,
+				      int *type) {
+	if (type) *type = VM_FAULT_MINOR;
+	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),
+	.open	= DRM(vm_open),
+	.close	= DRM(vm_close),
+};
+
+/** Shared virtual memory operations */
+static struct vm_operations_struct   DRM(vm_shm_ops) = {
+	.nopage = DRM(vm_shm_nopage),
+	.open	= DRM(vm_open),
+	.close	= DRM(vm_shm_close),
+};
+
+/** DMA virtual memory operations */
+static struct vm_operations_struct   DRM(vm_dma_ops) = {
+	.nopage = DRM(vm_dma_nopage),
+	.open	= DRM(vm_open),
+	.close	= DRM(vm_close),
+};
+
+/** Scatter-gather virtual memory operations */
+static struct vm_operations_struct   DRM(vm_sg_ops) = {
+	.nopage = DRM(vm_sg_nopage),
+	.open   = DRM(vm_open),
+	.close  = DRM(vm_close),
+};
+
+
 /**
  * \c open method for shared virtual memory.
  *