diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ata/sata_fsl.c | 39 |
1 files changed, 35 insertions, 4 deletions
diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c index d6577b93bee3..124b2c1d9c0b 100644 --- a/drivers/ata/sata_fsl.c +++ b/drivers/ata/sata_fsl.c @@ -123,6 +123,7 @@ enum { ONLINE = (1 << 31), GOING_OFFLINE = (1 << 30), BIST_ERR = (1 << 29), + CLEAR_ERROR = (1 << 27), FATAL_ERR_HC_MASTER_ERR = (1 << 18), FATAL_ERR_PARITY_ERR_TX = (1 << 17), @@ -143,6 +144,7 @@ enum { FATAL_ERR_CRC_ERR_RX | FATAL_ERR_FIFO_OVRFL_TX | FATAL_ERR_FIFO_OVRFL_RX, + INT_ON_DATA_LENGTH_MISMATCH = (1 << 12), INT_ON_FATAL_ERR = (1 << 5), INT_ON_PHYRDY_CHG = (1 << 4), @@ -1181,25 +1183,54 @@ static void sata_fsl_host_intr(struct ata_port *ap) u32 hstatus, done_mask = 0; struct ata_queued_cmd *qc; u32 SError; + u32 tag; + u32 status_mask = INT_ON_ERROR; hstatus = ioread32(hcr_base + HSTATUS); sata_fsl_scr_read(&ap->link, SCR_ERROR, &SError); + /* Read command completed register */ + done_mask = ioread32(hcr_base + CC); + + /* Workaround for data length mismatch errata */ + if (unlikely(hstatus & INT_ON_DATA_LENGTH_MISMATCH)) { + for (tag = 0; tag < ATA_MAX_QUEUE; tag++) { + qc = ata_qc_from_tag(ap, tag); + if (qc && ata_is_atapi(qc->tf.protocol)) { + u32 hcontrol; + /* Set HControl[27] to clear error registers */ + hcontrol = ioread32(hcr_base + HCONTROL); + iowrite32(hcontrol | CLEAR_ERROR, + hcr_base + HCONTROL); + + /* Clear HControl[27] */ + iowrite32(hcontrol & ~CLEAR_ERROR, + hcr_base + HCONTROL); + + /* Clear SError[E] bit */ + sata_fsl_scr_write(&ap->link, SCR_ERROR, + SError); + + /* Ignore fatal error and device error */ + status_mask &= ~(INT_ON_SINGL_DEVICE_ERR + | INT_ON_FATAL_ERR); + break; + } + } + } + if (unlikely(SError & 0xFFFF0000)) { DPRINTK("serror @host_intr : 0x%x\n", SError); sata_fsl_error_intr(ap); } - if (unlikely(hstatus & INT_ON_ERROR)) { + if (unlikely(hstatus & status_mask)) { DPRINTK("error interrupt!!\n"); sata_fsl_error_intr(ap); return; } - /* Read command completed register */ - done_mask = ioread32(hcr_base + CC); - VPRINTK("Status of all queues :\n"); VPRINTK("done_mask/CC = 0x%x, CA = 0x%x, CE=0x%x,CQ=0x%x,apqa=0x%x\n", done_mask, |