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drm/radeon: fix backend map setup on 1 RB sumo boards
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
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9200ee4941
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1 changed files with 14 additions and 3 deletions
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@ -2044,9 +2044,20 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
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WREG32(HDP_ADDR_CONFIG, gb_addr_config);
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WREG32(DMA_TILING_CONFIG, gb_addr_config);
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tmp = gb_addr_config & NUM_PIPES_MASK;
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tmp = r6xx_remap_render_backend(rdev, tmp, rdev->config.evergreen.max_backends,
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EVERGREEN_MAX_BACKENDS, disabled_rb_mask);
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if ((rdev->config.evergreen.max_backends == 1) &&
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(rdev->flags & RADEON_IS_IGP)) {
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if ((disabled_rb_mask & 3) == 1) {
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/* RB0 disabled, RB1 enabled */
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tmp = 0x11111111;
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} else {
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/* RB1 disabled, RB0 enabled */
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tmp = 0x00000000;
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}
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} else {
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tmp = gb_addr_config & NUM_PIPES_MASK;
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tmp = r6xx_remap_render_backend(rdev, tmp, rdev->config.evergreen.max_backends,
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EVERGREEN_MAX_BACKENDS, disabled_rb_mask);
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}
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WREG32(GB_BACKEND_MAP, tmp);
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WREG32(CGTS_SYS_TCC_DISABLE, 0);
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