[libata] sata_fsl: fix the controller operating mode
Jerry Huang [Tue, 20 Dec 2011 06:50:27 +0000 (14:50 +0800)]
Configure the FSL SATA controller to the preferred, enterprise mode.

Signed-off-by: Yutaka Ando <r46913@freescale.com>
Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
CC: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

drivers/ata/sata_fsl.c

index 5a2c95b..0120b0d 100644 (file)
@@ -140,6 +140,7 @@ enum {
         */
        HCONTROL_ONLINE_PHY_RST = (1 << 31),
        HCONTROL_FORCE_OFFLINE = (1 << 30),
+       HCONTROL_LEGACY = (1 << 28),
        HCONTROL_PARITY_PROT_MOD = (1 << 14),
        HCONTROL_DPATH_PARITY = (1 << 12),
        HCONTROL_SNOOP_ENABLE = (1 << 10),
@@ -1223,6 +1224,10 @@ static int sata_fsl_init_controller(struct ata_host *host)
         * part of the port_start() callback
         */
 
+       /* sata controller to operate in enterprise mode */
+       temp = ioread32(hcr_base + HCONTROL);
+       iowrite32(temp & ~HCONTROL_LEGACY, hcr_base + HCONTROL);
+
        /* ack. any pending IRQs for this controller/port */
        temp = ioread32(hcr_base + HSTATUS);
        if (temp & 0x3F)
@@ -1421,6 +1426,12 @@ static int sata_fsl_resume(struct platform_device *op)
        /* Recovery the CHBA register in host controller cmd register set */
        iowrite32(pp->cmdslot_paddr & 0xffffffff, hcr_base + CHBA);
 
+       iowrite32((ioread32(hcr_base + HCONTROL)
+                               | HCONTROL_ONLINE_PHY_RST
+                               | HCONTROL_SNOOP_ENABLE
+                               | HCONTROL_PMP_ATTACHED),
+                       hcr_base + HCONTROL);
+
        ata_host_resume(host);
        return 0;
 }