From: kettenis <kettenis@openbsd.org>
Date: Thu, 8 Oct 2015 10:25:24 +0000 (+0000)
Subject: Implement set_pages_array_wb() and set_pages_array_wc() for powerpc.  Since
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=de98251e792bfab57fefbcf0f377a2a08116e9b0;p=openbsd

Implement set_pages_array_wb() and set_pages_array_wc() for powerpc.  Since
powerpc doesn't actually implement write-combining fall back to uncached
mappings.

ok mpi@, jsg@
---

diff --git a/sys/dev/pci/drm/ttm/ttm_page_alloc.c b/sys/dev/pci/drm/ttm/ttm_page_alloc.c
index fbb2e946ff9..5b32bd7285b 100644
--- a/sys/dev/pci/drm/ttm/ttm_page_alloc.c
+++ b/sys/dev/pci/drm/ttm/ttm_page_alloc.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ttm_page_alloc.c,v 1.10 2015/09/27 11:09:26 jsg Exp $	*/
+/*	$OpenBSD: ttm_page_alloc.c,v 1.11 2015/10/08 10:25:24 kettenis Exp $	*/
 /*
  * Copyright (c) Red Hat Inc.
 
@@ -244,18 +244,21 @@ static struct kobj_type ttm_pool_kobj_type = {
 #endif
 };
 
+#ifndef PG_PMAP_WC
+#define PG_PMAP_WC PG_PMAP_UC
+#endif
+
 static struct ttm_pool_manager *_manager;
 
 static int set_pages_array_wb(struct vm_page **pages, int addrinarray)
 {
 #ifdef TTM_HAS_AGP
-#if defined(__amd64__) || defined(__i386__)
+#if defined(__amd64__) || defined(__i386__) || defined(__powerpc__)
 	int i;
 
 	for (i = 0; i < addrinarray; i++)
 		atomic_clearbits_int(&pages[i]->pg_flags, PG_PMAP_WC);
 #else
-	printf("%s stub\n", __func__);
 	return -ENOSYS;
 #endif
 #endif
@@ -265,13 +268,12 @@ static int set_pages_array_wb(struct vm_page **pages, int addrinarray)
 static int set_pages_array_wc(struct vm_page **pages, int addrinarray)
 {
 #ifdef TTM_HAS_AGP
-#if defined(__amd64__) || defined(__i386__)
+#if defined(__amd64__) || defined(__i386__) || defined(__powerpc__)
 	int i;
 
 	for (i = 0; i < addrinarray; i++)
 		atomic_setbits_int(&pages[i]->pg_flags, PG_PMAP_WC);
 #else
-	printf("%s stub\n", __func__);
 	return -ENOSYS;
 #endif
 #endif