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>

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;