linux-kernel - [PATCH] [AGPGART] intel_agp: fix GTT map size on G33

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Message-ID: <20070905071307.GB5817@zhen-devel.sh.intel.com>
Date:	Wed, 5 Sep 2007 15:13:07 +0800
From:	Zhenyu Wang <zhenyu.z.wang@...el.com>
To:	Dave Airlie <airlied@...ux.ie>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] [AGPGART] intel_agp: fix GTT map size on G33


Subject: [PATCH] [AGPGART] intel_agp: fix GTT map size on G33

G33 has 1MB GTT table range. Fix GTT mapping
in case like 512MB aperture size.

Signed-off-by: Zhenyu Wang <zhenyu.z.wang@...el.com>
---
 drivers/char/agp/intel-agp.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index 20d50d0..6a5c555 100644
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -919,6 +919,7 @@ static int intel_i915_create_gatt_table(struct agp_bridge_data *bridge)
 	struct aper_size_info_fixed *size;
 	int num_entries;
 	u32 temp, temp2;
+	int gtt_map_size = 256 * 1024;
 
 	size = agp_bridge->current_size;
 	page_order = size->page_order;
@@ -928,7 +929,9 @@ static int intel_i915_create_gatt_table(struct agp_bridge_data *bridge)
 	pci_read_config_dword(intel_private.pcidev, I915_MMADDR, &temp);
 	pci_read_config_dword(intel_private.pcidev, I915_PTEADDR,&temp2);
 
-	intel_private.gtt = ioremap(temp2, 256 * 1024);
+	if (IS_G33)
+	    gtt_map_size = 1024 * 1024; /* 1M on G33 */
+	intel_private.gtt = ioremap(temp2, gtt_map_size);
 	if (!intel_private.gtt)
 		return -ENOMEM;
 
-- 
1.5.2.3
-
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