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

[Asai Thambi S P]

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

Signed-off-by: Asai Thambi S P <asamymuth...@micron.com>
Signed-off-by: Selvan Mani <sm...@micron.com>
---
 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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