split out backwards compat into a separate file makes it easier for merging

    to 2.6

2 files changed, 154 insertions, 115 deletions

diff --git a/linux/drmP.h b/linux/drmP.h
index 962b4598..d3564d06 100644
--- a/linux/drmP.h
+++ b/linux/drmP.h
@@ -165,121 +165,7 @@
 /*@}*/
 
 
-/***********************************************************************/
-/** \name Backward compatibility section */
-/*@{*/
-
-#ifndef minor
-#define minor(x) MINOR((x))
-#endif
-
-#ifndef MODULE_LICENSE
-#define MODULE_LICENSE(x) 
-#endif
-
-#ifndef preempt_disable
-#define preempt_disable()
-#define preempt_enable()
-#endif
-
-#ifndef pte_offset_map 
-#define pte_offset_map pte_offset
-#define pte_unmap(pte)
-#endif
-
-#ifndef list_for_each_safe
-#define list_for_each_safe(pos, n, head)				\
-	for (pos = (head)->next, n = pos->next; pos != (head);		\
-		pos = n, n = pos->next)
-#endif
-
-#ifndef list_for_each_entry
-#define list_for_each_entry(pos, head, member)				\
-       for (pos = list_entry((head)->next, typeof(*pos), member),	\
-                    prefetch(pos->member.next);				\
-            &pos->member != (head);					\
-            pos = list_entry(pos->member.next, typeof(*pos), member),	\
-                    prefetch(pos->member.next))
-#endif
-
-#ifndef list_for_each_entry_safe
-#define list_for_each_entry_safe(pos, n, head, member)                  \
-        for (pos = list_entry((head)->next, typeof(*pos), member),      \
-                n = list_entry(pos->member.next, typeof(*pos), member); \
-             &pos->member != (head);                                    \
-             pos = n, n = list_entry(n->member.next, typeof(*n), member))
-#endif
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,19)
-static inline struct page * vmalloc_to_page(void * vmalloc_addr)
-{
-	unsigned long addr = (unsigned long) vmalloc_addr;
-	struct page *page = NULL;
-	pgd_t *pgd = pgd_offset_k(addr);
-	pmd_t *pmd;
-	pte_t *ptep, pte;
-  
-	if (!pgd_none(*pgd)) {
-		pmd = pmd_offset(pgd, addr);
-		if (!pmd_none(*pmd)) {
-			preempt_disable();
-			ptep = pte_offset_map(pmd, addr);
-			pte = *ptep;
-			if (pte_present(pte))
-				page = pte_page(pte);
-			pte_unmap(ptep);
-			preempt_enable();
-		}
-	}
-	return page;
-}
-#endif
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
-static inline unsigned iminor(struct inode *inode)
-{
-        return MINOR(inode->i_rdev);
-}
-
-#define old_encode_dev(x) (x)
-
-struct class_simple;
-struct device;
-
-#define pci_dev_put(x) do {} while (0)
-#define pci_get_subsys pci_find_subsys
-
-#define class_simple_device_add(...) do {} while (0)
-
-static inline void class_simple_device_remove(dev_t dev){};
-
-static inline void class_simple_destroy(struct class_simple *cs){};
-
-static inline struct class_simple *class_simple_create(struct module *owner, char *name) { return (struct class_simple *)owner; }
-
-#ifndef pci_pretty_name
-#define pci_pretty_name(x) x->name
-#endif
-
-#endif
-
-#ifndef __user
-#define __user
-#endif
-
-#ifndef __put_page
-#define __put_page(p)           atomic_dec(&(p)->count)
-#endif
-
-#ifndef REMAP_PAGE_RANGE_5_ARGS
-#define DRM_RPR_ARG(vma)
-#else
-#define DRM_RPR_ARG(vma) vma,
-#endif
-
-#define VM_OFFSET(vma) ((vma)->vm_pgoff << PAGE_SHIFT)
-
-/*@}*/
+#include "drm_compat.h"
 
 
 /***********************************************************************/
diff --git a/linux/drm_compat.h b/linux/drm_compat.h
new file mode 100644
index 00000000..3bb0b709
--- /dev/null
+++ b/linux/drm_compat.h
@@ -0,0 +1,153 @@
+/**
+ * \file drmP.h 
+ * Private header for Direct Rendering Manager
+ * 
+ * \author Rickard E. (Rik) Faith <faith@valinux.com>
+ * \author Gareth Hughes <gareth@valinux.com>
+ */
+
+/*
+ * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef _DRM_COMPAT_H_
+#define _DRM_COMPAT_H_
+
+/***********************************************************************/
+/** \name Backward compatibility section */
+/*@{*/
+
+#ifndef minor
+#define minor(x) MINOR((x))
+#endif
+
+#ifndef MODULE_LICENSE
+#define MODULE_LICENSE(x) 
+#endif
+
+#ifndef preempt_disable
+#define preempt_disable()
+#define preempt_enable()
+#endif
+
+#ifndef pte_offset_map 
+#define pte_offset_map pte_offset
+#define pte_unmap(pte)
+#endif
+
+#ifndef list_for_each_safe
+#define list_for_each_safe(pos, n, head)				\
+	for (pos = (head)->next, n = pos->next; pos != (head);		\
+		pos = n, n = pos->next)
+#endif
+
+#ifndef list_for_each_entry
+#define list_for_each_entry(pos, head, member)				\
+       for (pos = list_entry((head)->next, typeof(*pos), member),	\
+                    prefetch(pos->member.next);				\
+            &pos->member != (head);					\
+            pos = list_entry(pos->member.next, typeof(*pos), member),	\
+                    prefetch(pos->member.next))
+#endif
+
+#ifndef list_for_each_entry_safe
+#define list_for_each_entry_safe(pos, n, head, member)                  \
+        for (pos = list_entry((head)->next, typeof(*pos), member),      \
+                n = list_entry(pos->member.next, typeof(*pos), member); \
+             &pos->member != (head);                                    \
+             pos = n, n = list_entry(n->member.next, typeof(*n), member))
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,19)
+static inline struct page * vmalloc_to_page(void * vmalloc_addr)
+{
+	unsigned long addr = (unsigned long) vmalloc_addr;
+	struct page *page = NULL;
+	pgd_t *pgd = pgd_offset_k(addr);
+	pmd_t *pmd;
+	pte_t *ptep, pte;
+  
+	if (!pgd_none(*pgd)) {
+		pmd = pmd_offset(pgd, addr);
+		if (!pmd_none(*pmd)) {
+			preempt_disable();
+			ptep = pte_offset_map(pmd, addr);
+			pte = *ptep;
+			if (pte_present(pte))
+				page = pte_page(pte);
+			pte_unmap(ptep);
+			preempt_enable();
+		}
+	}
+	return page;
+}
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
+static inline unsigned iminor(struct inode *inode)
+{
+        return MINOR(inode->i_rdev);
+}
+
+#define old_encode_dev(x) (x)
+
+struct class_simple;
+struct device;
+
+#define pci_dev_put(x) do {} while (0)
+#define pci_get_subsys pci_find_subsys
+
+#define class_simple_device_add(...) do {} while (0)
+
+static inline void class_simple_device_remove(dev_t dev){};
+
+static inline void class_simple_destroy(struct class_simple *cs){};
+
+static inline struct class_simple *class_simple_create(struct module *owner, char *name) { return (struct class_simple *)owner; }
+
+#ifndef pci_pretty_name
+#define pci_pretty_name(x) x->name
+#endif
+
+#endif
+
+#ifndef __user
+#define __user
+#endif
+
+#ifndef __put_page
+#define __put_page(p)           atomic_dec(&(p)->count)
+#endif
+
+#ifndef REMAP_PAGE_RANGE_5_ARGS
+#define DRM_RPR_ARG(vma)
+#else
+#define DRM_RPR_ARG(vma) vma,
+#endif
+
+#define VM_OFFSET(vma) ((vma)->vm_pgoff << PAGE_SHIFT)
+
+/*@}*/
+
+#endif