sata_fsl: Add asynchronous notification support

Enable device hot-plug support on Port multiplier fan-out ports

Signed-off-by: Ashish Kalra <Ashish.Kalra@freescale.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c
index 172b57e6543fca8a9d0750ae37ad3d7d258762f8..8a5d35b759dd114a3715779fc6b49764f34fded9 100644 (file)
--- a/drivers/ata/sata_fsl.c
+++ b/drivers/ata/sata_fsl.c
@@ -34,7 +34,7 @@ enum {
 
        SATA_FSL_HOST_FLAGS     = (ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
                                ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
-                               ATA_FLAG_PMP | ATA_FLAG_NCQ),
+                               ATA_FLAG_PMP | ATA_FLAG_NCQ | ATA_FLAG_AN),
 
        SATA_FSL_MAX_CMDS       = SATA_FSL_QUEUE_DEPTH,
        SATA_FSL_CMD_HDR_SIZE   = 16,   /* 4 DWORDS */
@@ -132,7 +132,7 @@ enum {
        INT_ON_SINGL_DEVICE_ERR = (1 << 1),
        INT_ON_CMD_COMPLETE = 1,
 
-       INT_ON_ERROR = INT_ON_FATAL_ERR |
+       INT_ON_ERROR = INT_ON_FATAL_ERR | INT_ON_SNOTIFY_UPDATE |
            INT_ON_PHYRDY_CHG | INT_ON_SINGL_DEVICE_ERR,
 
        /*
@@ -153,7 +153,7 @@ enum {
        IE_ON_CMD_COMPLETE = 1,
 
        DEFAULT_PORT_IRQ_ENABLE_MASK = IE_ON_FATAL_ERR | IE_ON_PHYRDY_CHG |
-           IE_ON_SIGNATURE_UPDATE |
+           IE_ON_SIGNATURE_UPDATE | IE_ON_SNOTIFY_UPDATE |
            IE_ON_SINGL_DEVICE_ERR | IE_ON_CMD_COMPLETE,
 
        EXT_INDIRECT_SEG_PRD_FLAG = (1 << 31),
@@ -992,9 +992,8 @@ static void sata_fsl_error_intr(struct ata_port *ap)
         */
 
        sata_fsl_scr_read(&ap->link, SCR_ERROR, &SError);
-       if (unlikely(SError & 0xFFFF0000)) {
+       if (unlikely(SError & 0xFFFF0000))
                sata_fsl_scr_write(&ap->link, SCR_ERROR, SError);
-       }
 
        DPRINTK("error_intr,hStat=0x%x,CE=0x%x,DE =0x%x,SErr=0x%x\n",
                hstatus, cereg, ioread32(hcr_base + DE), SError);
@@ -1007,6 +1006,10 @@ static void sata_fsl_error_intr(struct ata_port *ap)
                freeze = 1;
        }
 
+       /* Handle SDB FIS receive & notify update */
+       if (hstatus & INT_ON_SNOTIFY_UPDATE)
+               sata_async_notification(ap);
+
        /* Handle PHYRDY change notification */
        if (hstatus & INT_ON_PHYRDY_CHG) {
                DPRINTK("SATA FSL: PHYRDY change indication\n");
@@ -1070,9 +1073,9 @@ static void sata_fsl_error_intr(struct ata_port *ap)
        }
 
        /* record error info */
-       if (qc) {
+       if (qc)
                qc->err_mask |= err_mask;
-       } else
+       else
                ehi->err_mask |= err_mask;
 
        ehi->action |= action;
@@ -1103,7 +1106,6 @@ static void sata_fsl_host_intr(struct ata_port *ap)
        if (unlikely(SError & 0xFFFF0000)) {
                DPRINTK("serror @host_intr : 0x%x\n", SError);
                sata_fsl_error_intr(ap);
-
        }
 
        if (unlikely(hstatus & INT_ON_ERROR)) {