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drm/radeon: fix backend map setup on 1 RB sumo boards

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Need to adjust the backend map depending on which
RB is enabled.

Fixes:
https://bugzilla.redhat.com/show_bug.cgi?id=892233

Reported-by: Mikko Tiihonen <mikko.tiihonen@iki.fi>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Alex Deucher 2013-01-30 13:57:40 -05:00
parent 9200ee4941
commit f7eb973008
1 changed files with 14 additions and 3 deletions
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17
drivers/gpu/drm/radeon/evergreen.c
View file

@ -2044,9 +2044,20 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
WREG32(HDP_ADDR_CONFIG, gb_addr_config);
WREG32(DMA_TILING_CONFIG, gb_addr_config);
tmp = gb_addr_config & NUM_PIPES_MASK;
tmp = r6xx_remap_render_backend(rdev, tmp, rdev->config.evergreen.max_backends,
EVERGREEN_MAX_BACKENDS, disabled_rb_mask);
if ((rdev->config.evergreen.max_backends == 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.evergreen.max_backends,
EVERGREEN_MAX_BACKENDS, disabled_rb_mask);
}
WREG32(GB_BACKEND_MAP, tmp);
WREG32(CGTS_SYS_TCC_DISABLE, 0);