Attachment 76354 Details for Bug 57919 – possible fix

[patch] possible fix

0001-drm-radeon-fix-backend-map-setup-on-1-RB-trinity-boa.patch (text/plain), 1.73 KB, created by Alex Deucher on 2013-03-11 23:41:52 UTC

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Creator: Alex Deucher

Created: 2013-03-11 23:41:52 UTC

Size: 1.73 KB

patch

obsolete

>From 031c7283163306525acc85aed9865338a3c81952 Mon Sep 17 00:00:00 2001
>From: Alex Deucher <alexander.deucher@amd.com>
>Date: Mon, 11 Mar 2013 19:28:39 -0400
>Subject: [PATCH] drm/radeon: fix backend map setup on 1 RB trinity boards
>
>Need to adjust the backend map depending on which RB is
>enabled.  This is the trinity equivalent of:
>f7eb97300832f4fe5fe916c5d84cd2e25169330e
>
>Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
>Cc: stable@vger.kernel.org
>---
> drivers/gpu/drm/radeon/ni.c |   21 ++++++++++++++++-----
> 1 files changed, 16 insertions(+), 5 deletions(-)
>
>diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
>index 367b7a1..b3521c4e 100644
>--- a/drivers/gpu/drm/radeon/ni.c
>+++ b/drivers/gpu/drm/radeon/ni.c
>@@ -625,11 +625,22 @@ static void cayman_gpu_init(struct radeon_device *rdev)
> 	WREG32(DMA_TILING_CONFIG + DMA0_REGISTER_OFFSET, gb_addr_config);
> 	WREG32(DMA_TILING_CONFIG + DMA1_REGISTER_OFFSET, gb_addr_config);
> 
>-	tmp = gb_addr_config & NUM_PIPES_MASK;
>-	tmp = r6xx_remap_render_backend(rdev, tmp,
>-					rdev->config.cayman.max_backends_per_se *
>-					rdev->config.cayman.max_shader_engines,
>-					CAYMAN_MAX_BACKENDS, disabled_rb_mask);
>+	if ((rdev->config.cayman.max_backends_per_se == 1) &&
>+	    (rdev->flags & RADEON_IS_IGP)) {
>+		if ((disabled_rb_mask & 3) == 1) {
>+			/* RB0 disabled, RB1 enabled */
>+			tmp = 0x11111111;
>+		} else {
>+			/* RB1 disabled, RB0 enabled */
>+			tmp = 0x00000000;
>+		}
>+	} else {
>+		tmp = gb_addr_config & NUM_PIPES_MASK;
>+		tmp = r6xx_remap_render_backend(rdev, tmp,
>+						rdev->config.cayman.max_backends_per_se *
>+						rdev->config.cayman.max_shader_engines,
>+						CAYMAN_MAX_BACKENDS, disabled_rb_mask);
>+	}
> 	WREG32(GB_BACKEND_MAP, tmp);
> 
> 	cgts_tcc_disable = 0xffff0000;
>-- 
>1.7.7.5
>

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Attachments on bug 57919: 71035 | 71036 | 71037 | 76350 | 76354 | 77616 | 86939

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