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Subject[PATCH 49/71] atari_NCR5380: Introduce FLAG_DTC3181E
The atari_NCR5380.c core driver lacks the DTC special case found in
NCR5380.c. Add this special case. This reduces divergence between them
and allows drivers like dmx3191d to make use of atari_NCR5380.c which is
helpful for testing.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>

---
drivers/scsi/NCR5380.c | 7 +++----
drivers/scsi/atari_NCR5380.c | 11 ++++++++---
2 files changed, 11 insertions(+), 7 deletions(-)

Index: linux/drivers/scsi/atari_NCR5380.c
===================================================================
--- linux.orig/drivers/scsi/atari_NCR5380.c 2015-11-18 19:34:08.000000000 +1100
+++ linux/drivers/scsi/atari_NCR5380.c 2015-11-18 19:34:08.000000000 +1100
@@ -646,12 +646,13 @@ static void prepare_info(struct Scsi_Hos
"base 0x%lx, irq %d, "
"can_queue %d, cmd_per_lun %d, "
"sg_tablesize %d, this_id %d, "
- "flags { %s%s}, "
+ "flags { %s%s%s}, "
"options { %s} ",
instance->hostt->name, instance->io_port, instance->n_io_port,
instance->base, instance->irq,
instance->can_queue, instance->cmd_per_lun,
instance->sg_tablesize, instance->this_id,
+ hostdata->flags & FLAG_DTC3181E ? "DTC3181E " : "",
hostdata->flags & FLAG_TAGGED_QUEUING ? "TAGGED_QUEUING " : "",
hostdata->flags & FLAG_TOSHIBA_DELAY ? "TOSHIBA_DELAY " : "",
#ifdef DIFFERENTIAL
@@ -1416,8 +1417,12 @@ static int NCR5380_select(struct Scsi_Ho
NCR5380_write(INITIATOR_COMMAND_REG,
ICR_BASE | ICR_ASSERT_SEL | ICR_ASSERT_BSY);

- if ((NCR5380_read(INITIATOR_COMMAND_REG) & ICR_ARBITRATION_LOST) ||
- hostdata->connected) {
+ /* RvC: DTC3181E has some trouble with this so we simply removed it.
+ * Seems to work with only Mustek scanner attached.
+ */
+ if (!(hostdata->flags & FLAG_DTC3181E) &&
+ ((NCR5380_read(INITIATOR_COMMAND_REG) & ICR_ARBITRATION_LOST) ||
+ hostdata->connected)) {
NCR5380_write(MODE_REG, MR_BASE);
NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE);
dprintk(NDEBUG_ARBITRATION, "scsi%d: lost arbitration, deasserting ICR_ASSERT_SEL\n",
Index: linux/drivers/scsi/NCR5380.c
===================================================================
--- linux.orig/drivers/scsi/NCR5380.c 2015-11-18 19:34:04.000000000 +1100
+++ linux/drivers/scsi/NCR5380.c 2015-11-18 19:34:08.000000000 +1100
@@ -1154,11 +1154,10 @@ static int NCR5380_select(struct Scsi_Ho
NCR5380_write(INITIATOR_COMMAND_REG,
ICR_BASE | ICR_ASSERT_SEL | ICR_ASSERT_BSY);

+ /* RvC: DTC3181E has some trouble with this so we simply removed it.
+ * Seems to work with only Mustek scanner attached.
+ */
if (!(hostdata->flags & FLAG_DTC3181E) &&
- /* RvC: DTC3181E has some trouble with this
- * so we simply removed it. Seems to work with
- * only Mustek scanner attached
- */
(NCR5380_read(INITIATOR_COMMAND_REG) & ICR_ARBITRATION_LOST)) {
NCR5380_write(MODE_REG, MR_BASE);
NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE);



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