sata_mv: nuke unreleased GenIIe revisions
Mark Lord [Tue, 27 May 2008 21:58:56 +0000 (17:58 -0400)]
The only public release of the 6042/7042 chips was/is revision "B0".
Remove code that attempted to deal with earlier, non-released revs.
This matches the logic of the current Marvell "proprietary" driver.

Also, bump up the sata_mv version number, to reflect this batch of erratas.

Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

drivers/ata/sata_mv.c

index a39779a..969a769 100644 (file)
@@ -72,7 +72,7 @@
 #include <linux/libata.h>
 
 #define DRV_NAME       "sata_mv"
-#define DRV_VERSION    "1.21"
+#define DRV_VERSION    "1.22"
 
 enum {
        /* BAR's are enumerated in terms of pci_resource_start() terms */
@@ -354,7 +354,6 @@ enum {
        MV_HP_ERRATA_50XXB2     = (1 << 2),
        MV_HP_ERRATA_60X1B2     = (1 << 3),
        MV_HP_ERRATA_60X1C0     = (1 << 4),
-       MV_HP_ERRATA_XX42A0     = (1 << 5),
        MV_HP_GEN_I             = (1 << 6),     /* Generation I: 50xx */
        MV_HP_GEN_II            = (1 << 7),     /* Generation II: 60xx */
        MV_HP_GEN_IIE           = (1 << 8),     /* Generation IIE: 6042/7042 */
@@ -811,12 +810,7 @@ static void mv_set_edma_ptrs(void __iomem *port_mmio,
        writel((pp->crqb_dma >> 16) >> 16, port_mmio + EDMA_REQ_Q_BASE_HI_OFS);
        writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | index,
                 port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
-
-       if (hpriv->hp_flags & MV_HP_ERRATA_XX42A0)
-               writelfl((pp->crqb_dma & 0xffffffff) | index,
-                        port_mmio + EDMA_REQ_Q_OUT_PTR_OFS);
-       else
-               writelfl(index, port_mmio + EDMA_REQ_Q_OUT_PTR_OFS);
+       writelfl(index, port_mmio + EDMA_REQ_Q_OUT_PTR_OFS);
 
        /*
         * initialize response queue
@@ -826,13 +820,7 @@ static void mv_set_edma_ptrs(void __iomem *port_mmio,
 
        WARN_ON(pp->crpb_dma & 0xff);
        writel((pp->crpb_dma >> 16) >> 16, port_mmio + EDMA_RSP_Q_BASE_HI_OFS);
-
-       if (hpriv->hp_flags & MV_HP_ERRATA_XX42A0)
-               writelfl((pp->crpb_dma & 0xffffffff) | index,
-                        port_mmio + EDMA_RSP_Q_IN_PTR_OFS);
-       else
-               writelfl(index, port_mmio + EDMA_RSP_Q_IN_PTR_OFS);
-
+       writelfl(index, port_mmio + EDMA_RSP_Q_IN_PTR_OFS);
        writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) | index,
                 port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
 }
@@ -3002,10 +2990,7 @@ static int mv_chip_id(struct ata_host *host, unsigned int board_idx)
                        hp_flags |= MV_HP_CUT_THROUGH;
 
                switch (pdev->revision) {
-               case 0x0:
-                       hp_flags |= MV_HP_ERRATA_XX42A0;
-                       break;
-               case 0x1:
+               case 0x2: /* Rev.B0: the first/only public release */
                        hp_flags |= MV_HP_ERRATA_60X1C0;
                        break;
                default: