[PATCH 2/6] mtip32xx: Handle NCQ commands during the security lockedstate

From: Asai Thambi S P
Date: Wed Sep 05 2012 - 12:31:40 EST


Return error for NCQ commands when the drive is in security locked state

Signed-off-by: Asai Thambi S P <asamymuthupa@xxxxxxxxxx>
Signed-off-by: Selvan Mani <smani@xxxxxxxxxx>
---
drivers/block/mtip32xx/mtip32xx.c | 10 +++++++++-
drivers/block/mtip32xx/mtip32xx.h | 2 ++
2 files changed, 11 insertions(+), 1 deletions(-)

diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index a935f4f..2553c73 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -1148,11 +1148,15 @@ static bool mtip_pause_ncq(struct mtip_port *port,
reply = port->rxfis + RX_FIS_D2H_REG;
task_file_data = readl(port->mmio+PORT_TFDATA);

- if ((task_file_data & 1) || (fis->command == ATA_CMD_SEC_ERASE_UNIT))
+ if (fis->command == ATA_CMD_SEC_ERASE_UNIT)
+ clear_bit(MTIP_DDF_SEC_LOCK_BIT, &port->dd->dd_flag);
+
+ if ((task_file_data & 1))
return false;

if (fis->command == ATA_CMD_SEC_ERASE_PREP) {
set_bit(MTIP_PF_SE_ACTIVE_BIT, &port->flags);
+ set_bit(MTIP_DDF_SEC_LOCK_BIT, &port->dd->dd_flag);
port->ic_pause_timer = jiffies;
return true;
} else if ((fis->command == ATA_CMD_DOWNLOAD_MICRO) &&
@@ -3619,6 +3623,10 @@ static void mtip_make_request(struct request_queue *queue, struct bio *bio)
bio_endio(bio, -ENODATA);
return;
}
+ if (unlikely(test_bit(MTIP_DDF_SEC_LOCK_BIT, &dd->dd_flag))) {
+ bio_endio(bio, -ENODATA);
+ return;
+ }
}

if (unlikely(!bio_has_data(bio))) {
diff --git a/drivers/block/mtip32xx/mtip32xx.h b/drivers/block/mtip32xx/mtip32xx.h
index 0255d19..18627a1 100644
--- a/drivers/block/mtip32xx/mtip32xx.h
+++ b/drivers/block/mtip32xx/mtip32xx.h
@@ -137,10 +137,12 @@ enum {
MTIP_PF_SVC_THD_STOP_BIT = 8,

/* below are bit numbers in 'dd_flag' defined in driver_data */
+ MTIP_DDF_SEC_LOCK_BIT = 0,
MTIP_DDF_REMOVE_PENDING_BIT = 1,
MTIP_DDF_OVER_TEMP_BIT = 2,
MTIP_DDF_WRITE_PROTECT_BIT = 3,
MTIP_DDF_STOP_IO = ((1 << MTIP_DDF_REMOVE_PENDING_BIT) | \
+ (1 << MTIP_DDF_SEC_LOCK_BIT) | \
(1 << MTIP_DDF_OVER_TEMP_BIT) | \
(1 << MTIP_DDF_WRITE_PROTECT_BIT)),

--
1.7.1

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