drm/radeon: fix render backend setup for SI and CIK

From Marek Olsak
88aa6194df73e8dff9f2a1ee47d2775df3d99411 in ubuntu 3.8
9fadb352ed73edd7801a280b552d33a6040c8721 in mainline linux

1 files changed, 6 insertions, 6 deletions

diff --git a/sys/dev/pci/drm/radeon/si.c b/sys/dev/pci/drm/radeon/si.c
index 72716788f49..43a1d231a5f 100644
--- a/sys/dev/pci/drm/radeon/si.c
+++ b/sys/dev/pci/drm/radeon/si.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: si.c,v 1.11 2014/02/10 00:47:20 jsg Exp $	*/
+/*	$OpenBSD: si.c,v 1.12 2014/02/10 01:35:49 jsg Exp $	*/
 /*
  * Copyright 2011 Advanced Micro Devices, Inc.
  *
@@ -1460,7 +1460,7 @@ static void si_setup_spi(struct radeon_device *rdev,
 }
 
 static u32 si_get_rb_disabled(struct radeon_device *rdev,
-			      u32 max_rb_num, u32 se_num,
+			      u32 max_rb_num_per_se,
 			      u32 sh_per_se)
 {
 	u32 data, mask;
@@ -1474,14 +1474,14 @@ static u32 si_get_rb_disabled(struct radeon_device *rdev,
 
 	data >>= BACKEND_DISABLE_SHIFT;
 
-	mask = si_create_bitmask(max_rb_num / se_num / sh_per_se);
+	mask = si_create_bitmask(max_rb_num_per_se / sh_per_se);
 
 	return data & mask;
 }
 
 static void si_setup_rb(struct radeon_device *rdev,
 			u32 se_num, u32 sh_per_se,
-			u32 max_rb_num)
+			u32 max_rb_num_per_se)
 {
 	int i, j;
 	u32 data, mask;
@@ -1491,14 +1491,14 @@ static void si_setup_rb(struct radeon_device *rdev,
 	for (i = 0; i < se_num; i++) {
 		for (j = 0; j < sh_per_se; j++) {
 			si_select_se_sh(rdev, i, j);
-			data = si_get_rb_disabled(rdev, max_rb_num, se_num, sh_per_se);
+			data = si_get_rb_disabled(rdev, max_rb_num_per_se, sh_per_se);
 			disabled_rbs |= data << ((i * sh_per_se + j) * TAHITI_RB_BITMAP_WIDTH_PER_SH);
 		}
 	}
 	si_select_se_sh(rdev, 0xffffffff, 0xffffffff);
 
 	mask = 1;
-	for (i = 0; i < max_rb_num; i++) {
+	for (i = 0; i < max_rb_num_per_se * se_num; i++) {
 		if (!(disabled_rbs & mask))
 			enabled_rbs |= mask;
 		mask <<= 1;