Re: [Dri-devel] Re: Improved DRM support for cant_use_aperture platforms

[David Mosberger <davidm@napali.hpl.hp.com>]

OK, could you try with this patch applied on top of my previous patch?
Checking against KERNEL_VERSION(2,5,68) ensures that we have the new
(4-wargument) vmap() call and the "#ifndef PAGE_AGP" part ensures that
things will compile fine until the kernel's asm/agp.h gets updated.

	--david

===== drivers/char/drm/drm_memory.h 1.16 vs edited =====
--- 1.16/drivers/char/drm/drm_memory.h	Sat May 10 01:32:08 2003
+++ edited/drivers/char/drm/drm_memory.h	Mon May 12 13:37:57 2003
@@ -42,7 +42,12 @@
  */
 #define DEBUG_MEMORY 0
 
-#if __REALLY_HAVE_AGP
+/* Need at least kernel v2.5.68 to get the 4-argument version of vmap().  */
+#if __REALLY_HAVE_AGP && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,68))
+
+#ifndef PAGE_AGP
+# define PAGE_AGP	PAGE_KERNEL_NOCACHE
+#endif
 
 /*
  * Find the drm_map that covers the range [offset, offset+size).
@@ -127,7 +132,7 @@
 {
 	int remap_aperture = 0;
 
-#if __REALLY_HAVE_AGP
+#if __REALLY_HAVE_AGP && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,68))
 	if (dev->agp->cant_use_aperture) {
 		drm_map_t *map = drm_lookup_map(offset, size, dev);
 
@@ -146,7 +151,7 @@
 {
 	int remap_aperture = 0;
 
-#if __REALLY_HAVE_AGP
+#if __REALLY_HAVE_AGP && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,68))
 	if (dev->agp->cant_use_aperture) {
 		drm_map_t *map = drm_lookup_map(offset, size, dev);
 
@@ -163,7 +168,7 @@
 static inline void drm_ioremapfree(void *pt, unsigned long size, drm_device_t *dev)
 {
 	int unmap_aperture = 0;
-#if __REALLY_HAVE_AGP
+#if __REALLY_HAVE_AGP && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,68))
 	/*
 	 * This is a bit ugly.  It would be much cleaner if the DRM API would use separate
 	 * routines for handling mappings in the AGP space.  Hopefully this can be done in