The alignment workaround is only necessary for cb3.2 or earlier platforms.
Signed-off-by: Dave Jiang <dave.ji...@intel.com>
---
drivers/dma/ioat/dma_v3.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/dma/ioat/dma_v3.c b/drivers/dma/ioat/dma_v3.c
index a6d4175..a55c346 100644
--- a/drivers/dma/ioat/dma_v3.c
+++ b/drivers/dma/ioat/dma_v3.c
@@ -1549,10 +1549,14 @@ 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;
@@ -1562,7 +1566,10 @@ 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;
@@ -1571,6 +1578,7 @@ 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;
--
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