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authorDave Jiang <dave.jiang@intel.com>2013-03-27 02:43:15 +0400
committerVinod Koul <vinod.koul@intel.com>2013-04-15 08:21:20 +0400
commiteceec44ecd7f3285468a684e7216df2316b178f3 (patch)
tree9607c250ac6d2a9415877f768fc427c40de8f453 /drivers/dma/ioat
parent3f09ede4237fe4691ac687c6c43cb4c1a530777b (diff)
downloadlinux-eceec44ecd7f3285468a684e7216df2316b178f3.tar.xz
ioatdma: skip silicon bug workaround for pq_align for cb3.3
The alignment workaround is only necessary for cb3.2 or earlier platforms. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Acked-by: Dan Williams <djbw@fb.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/ioat')
-rw-r--r--drivers/dma/ioat/dma_v3.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/dma/ioat/dma_v3.c b/drivers/dma/ioat/dma_v3.c
index 9628ba2ff70c..cf97e3f16924 100644
--- a/drivers/dma/ioat/dma_v3.c
+++ b/drivers/dma/ioat/dma_v3.c
@@ -1521,10 +1521,14 @@ int ioat3_dma_probe(struct ioatdma_device *device, int dca)
dma_cap_set(DMA_XOR_VAL, dma->cap_mask);
dma->device_prep_dma_xor_val = ioat3_prep_xor_val;
}
+
if (cap & IOAT_CAP_PQ) {
is_raid_device = true;
dma_set_maxpq(dma, 8, 0);
- dma->pq_align = 6;
+ if (is_xeon_cb32(pdev))
+ dma->pq_align = 6;
+ else
+ dma->pq_align = 0;
dma_cap_set(DMA_PQ, dma->cap_mask);
dma->device_prep_dma_pq = ioat3_prep_pq;
@@ -1534,7 +1538,10 @@ int ioat3_dma_probe(struct ioatdma_device *device, int dca)
if (!(cap & IOAT_CAP_XOR)) {
dma->max_xor = 8;
- dma->xor_align = 6;
+ if (is_xeon_cb32(pdev))
+ dma->xor_align = 6;
+ else
+ dma->xor_align = 0;
dma_cap_set(DMA_XOR, dma->cap_mask);
dma->device_prep_dma_xor = ioat3_prep_pqxor;
@@ -1543,6 +1550,7 @@ int ioat3_dma_probe(struct ioatdma_device *device, int dca)
dma->device_prep_dma_xor_val = ioat3_prep_pqxor_val;
}
}
+
if (is_raid_device && (cap & IOAT_CAP_FILL_BLOCK)) {
dma_cap_set(DMA_MEMSET, dma->cap_mask);
dma->device_prep_dma_memset = ioat3_prep_memset_lock;