linux-kernel - [PATCHv2] agp/amd-k7: Allow binding user memory to the AGP GART.

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Date:	Sat, 16 Oct 2010 02:45:15 +0200
From:	Francisco Jerez <currojerez@...eup.net>
To:	Dave Airlie <airlied@...il.com>
Cc:	linux-kernel@...r.kernel.org,
	Grzesiek Sójka <pld@....pl>,
	dri-devel@...ts.freedesktop.org
Subject: [PATCHv2] agp/amd-k7: Allow binding user memory to the AGP GART.

TTM-based DRM drivers need to be able to bind user memory to the AGP
aperture. This patch fixes the "[TTM] AGP Bind memory failed." errors
and the subsequent fallout seen with the nouveau driver.

Signed-off-by: Francisco Jerez <currojerez@...eup.net>
Tested-by: Grzesiek Sójka <pld@....pl>
---
v2: "amd_remove_memory" bails out when it's given user memory, fix it too.

 drivers/char/agp/amd-k7-agp.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/char/agp/amd-k7-agp.c b/drivers/char/agp/amd-k7-agp.c
index b6b1568..b1b4362 100644
--- a/drivers/char/agp/amd-k7-agp.c
+++ b/drivers/char/agp/amd-k7-agp.c
@@ -309,7 +309,8 @@ static int amd_insert_memory(struct agp_memory *mem, off_t pg_start, int type)
 
 	num_entries = A_SIZE_LVL2(agp_bridge->current_size)->num_entries;
 
-	if (type != 0 || mem->type != 0)
+	if (type != mem->type ||
+	    agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type))
 		return -EINVAL;
 
 	if ((pg_start + mem->page_count) > num_entries)
@@ -348,7 +349,8 @@ static int amd_remove_memory(struct agp_memory *mem, off_t pg_start, int type)
 	unsigned long __iomem *cur_gatt;
 	unsigned long addr;
 
-	if (type != 0 || mem->type != 0)
+	if (type != mem->type ||
+	    agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type))
 		return -EINVAL;
 
 	for (i = pg_start; i < (mem->page_count + pg_start); i++) {
-- 
1.6.4.4

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