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drm/nv50/vram: fix incorrect detection of bank count on newer chipsets 

NVA3+ has an extra bit here compared to NV50:NVA3 chipsets.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2011-10-07 16:00:31 +10:00
parent dce411cdf6
commit 7b4b98fa0c
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/nouveau/nv50_vram.c
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@ -160,7 +160,7 @@ nv50_vram_rblock(struct drm_device *dev)
colbits = (r4 & 0x0000f000) >> 12;
rowbitsa = ((r4 & 0x000f0000) >> 16) + 8;
rowbitsb = ((r4 & 0x00f00000) >> 20) + 8;
banks = ((r4 & 0x01000000) ? 8 : 4);
banks = 1 << (((r4 & 0x03000000) >> 24) + 2);
rowsize = parts * banks * (1 << colbits) * 8;
predicted = rowsize << rowbitsa;