1 files changed, 18 insertions, 7 deletions

diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c
index ef3ce26bb1f0..0f91e583892e 100644
--- a/drivers/ata/sata_fsl.c
+++ b/drivers/ata/sata_fsl.c
@@ -6,7 +6,7 @@
  * Author: Ashish Kalra <ashish.kalra@freescale.com>
  * Li Yang <leoli@freescale.com>
  *
- * Copyright (c) 2006-2007 Freescale Semiconductor, Inc.
+ * Copyright (c) 2006-2007, 2011 Freescale Semiconductor, Inc.
  *
  * This program is free software; you can redistribute  it and/or modify it
  * under  the terms of  the GNU General  Public License as published by the
@@ -157,7 +157,8 @@ enum {
             IE_ON_SINGL_DEVICE_ERR | IE_ON_CMD_COMPLETE,
 
         EXT_INDIRECT_SEG_PRD_FLAG = (1 << 31),
-        DATA_SNOOP_ENABLE = (1 << 22),
+        DATA_SNOOP_ENABLE_V1 = (1 << 22),
+        DATA_SNOOP_ENABLE_V2 = (1 << 28),
 };
 
 /*
@@ -260,6 +261,7 @@ struct sata_fsl_host_priv {
         void __iomem *ssr_base;
         void __iomem *csr_base;
         int irq;
+        int data_snoop;
 };
 
 static inline unsigned int sata_fsl_tag(unsigned int tag,
@@ -312,7 +314,8 @@ static void sata_fsl_setup_cmd_hdr_entry(struct sata_fsl_port_priv *pp,
 }
 
 static unsigned int sata_fsl_fill_sg(struct ata_queued_cmd *qc, void *cmd_desc,
-                                     u32 *ttl, dma_addr_t cmd_desc_paddr)
+                                     u32 *ttl, dma_addr_t cmd_desc_paddr,
+                                     int data_snoop)
 {
         struct scatterlist *sg;
         unsigned int num_prde = 0;
@@ -362,8 +365,7 @@ static unsigned int sata_fsl_fill_sg(struct ata_queued_cmd *qc, void *cmd_desc,
 
                 ttl_dwords += sg_len;
                 prd->dba = cpu_to_le32(sg_addr);
-                prd->ddc_and_ext =
-                    cpu_to_le32(DATA_SNOOP_ENABLE | (sg_len & ~0x03));
+                prd->ddc_and_ext = cpu_to_le32(data_snoop | (sg_len & ~0x03));
 
                 VPRINTK("sg_fill, ttl=%d, dba=0x%x, ddc=0x%x\n",
                         ttl_dwords, prd->dba, prd->ddc_and_ext);
@@ -378,7 +380,7 @@ static unsigned int sata_fsl_fill_sg(struct ata_queued_cmd *qc, void *cmd_desc,
                 /* set indirect extension flag along with indirect ext. size */
                 prd_ptr_to_indirect_ext->ddc_and_ext =
                     cpu_to_le32((EXT_INDIRECT_SEG_PRD_FLAG |
-                                 DATA_SNOOP_ENABLE |
+                                 data_snoop |
                                  (indirect_ext_segment_sz & ~0x03)));
         }
 
@@ -421,7 +423,8 @@ static void sata_fsl_qc_prep(struct ata_queued_cmd *qc)
 
         if (qc->flags & ATA_QCFLAG_DMAMAP)
                 num_prde = sata_fsl_fill_sg(qc, (void *)cd,
-                                            &ttl_dwords, cd_paddr);
+                                            &ttl_dwords, cd_paddr,
+                                            host_priv->data_snoop);
 
         if (qc->tf.protocol == ATA_PROT_NCQ)
                 desc_info |= FPDMA_QUEUED_CMD;
@@ -1349,6 +1352,11 @@ static int sata_fsl_probe(struct platform_device *ofdev)
         }
         host_priv->irq = irq;
 
+        if (of_device_is_compatible(ofdev->dev.of_node, "fsl,pq-sata-v2"))
+                host_priv->data_snoop = DATA_SNOOP_ENABLE_V2;
+        else
+                host_priv->data_snoop = DATA_SNOOP_ENABLE_V1;
+
         /* allocate host structure */
         host = ata_host_alloc_pinfo(&ofdev->dev, ppi, SATA_FSL_MAX_PORTS);
 
@@ -1431,6 +1439,9 @@ static struct of_device_id fsl_sata_match[] = {
         {
                 .compatible = "fsl,pq-sata",
         },
+        {
+                .compatible = "fsl,pq-sata-v2",
+        },
         {},
 };