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authorFinn Thain <fthain@telegraphics.com.au>2014-11-12 16:12:19 +1100
committerChristoph Hellwig <hch@lst.de>2014-11-20 09:11:19 +0100
commitca513fc948e66ecdd3c75cca9371762bb4c06776 (patch)
tree354d51b6c7ffdc8390d4820a7d145d3785ed2a85
parentff50f9ed0fcae6c890cc6d478814ec8cbb24feb1 (diff)
atari_NCR5380: Introduce FLAG_TAGGED_QUEUING
The static variable setup_use_tagged_queuing is declared in mac_scsi.c, sun3_scsi.c and atari_scsi.c and doesn't belong in the core driver. None of the other NCR5380 drivers suffer from this layering issue which makes merging the core drivers more difficult and will likely hinder plans for future use of platform data to configure the driver. Replace the static variable with a host flag. This way it can be reported along with the other flags. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.de> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
-rw-r--r--drivers/scsi/NCR5380.h1
-rw-r--r--drivers/scsi/atari_NCR5380.c22
-rw-r--r--drivers/scsi/atari_scsi.c8
-rw-r--r--drivers/scsi/mac_scsi.c8
-rw-r--r--drivers/scsi/sun3_scsi.c12
5 files changed, 28 insertions, 23 deletions
diff --git a/drivers/scsi/NCR5380.h b/drivers/scsi/NCR5380.h
index 7b1a0913d94c..2fafe1d54fb8 100644
--- a/drivers/scsi/NCR5380.h
+++ b/drivers/scsi/NCR5380.h
@@ -242,6 +242,7 @@
#define FLAG_NO_PSEUDO_DMA 8 /* Inhibit DMA */
#define FLAG_DTC3181E 16 /* DTC3181E */
#define FLAG_LATE_DMA_SETUP 32 /* Setup NCR before DMA H/W */
+#define FLAG_TAGGED_QUEUING 64 /* as X3T9.2 spelled it */
#ifndef ASM
struct NCR5380_hostdata {
diff --git a/drivers/scsi/atari_NCR5380.c b/drivers/scsi/atari_NCR5380.c
index 7bbfa1b777c3..74b7c538c394 100644
--- a/drivers/scsi/atari_NCR5380.c
+++ b/drivers/scsi/atari_NCR5380.c
@@ -283,12 +283,12 @@ typedef struct {
static TAG_ALLOC TagAlloc[8][8]; /* 8 targets and 8 LUNs */
-static void __init init_tags(void)
+static void __init init_tags(struct NCR5380_hostdata *hostdata)
{
int target, lun;
TAG_ALLOC *ta;
- if (!setup_use_tagged_queuing)
+ if (!(hostdata->flags & FLAG_TAGGED_QUEUING))
return;
for (target = 0; target < 8; ++target) {
@@ -321,7 +321,8 @@ static int is_lun_busy(struct scsi_cmnd *cmd, int should_be_tagged)
if (hostdata->busy[cmd->device->id] & (1 << lun))
return 1;
if (!should_be_tagged ||
- !setup_use_tagged_queuing || !cmd->device->tagged_supported)
+ !(hostdata->flags & FLAG_TAGGED_QUEUING) ||
+ !cmd->device->tagged_supported)
return 0;
if (TagAlloc[cmd->device->id][lun].nr_allocated >=
TagAlloc[cmd->device->id][lun].queue_size) {
@@ -347,7 +348,8 @@ static void cmd_get_tag(struct scsi_cmnd *cmd, int should_be_tagged)
* an untagged command.
*/
if (!should_be_tagged ||
- !setup_use_tagged_queuing || !cmd->device->tagged_supported) {
+ !(hostdata->flags & FLAG_TAGGED_QUEUING) ||
+ !cmd->device->tagged_supported) {
cmd->tag = TAG_NONE;
hostdata->busy[cmd->device->id] |= (1 << lun);
dprintk(NDEBUG_TAGS, "scsi%d: target %d lun %d now allocated by untagged "
@@ -392,12 +394,12 @@ static void cmd_free_tag(struct scsi_cmnd *cmd)
}
-static void free_all_tags(void)
+static void free_all_tags(struct NCR5380_hostdata *hostdata)
{
int target, lun;
TAG_ALLOC *ta;
- if (!setup_use_tagged_queuing)
+ if (!(hostdata->flags & FLAG_TAGGED_QUEUING))
return;
for (target = 0; target < 8; ++target) {
@@ -653,11 +655,13 @@ static void prepare_info(struct Scsi_Host *instance)
"base 0x%lx, irq %d, "
"can_queue %d, cmd_per_lun %d, "
"sg_tablesize %d, this_id %d, "
+ "flags { %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_TAGGED_QUEUING ? "TAGGED_QUEUING " : "",
#ifdef DIFFERENTIAL
"DIFFERENTIAL "
#endif
@@ -799,7 +803,7 @@ static int __init NCR5380_init(struct Scsi_Host *instance, int flags)
for (i = 0; i < 8; ++i)
hostdata->busy[i] = 0;
#ifdef SUPPORT_TAGS
- init_tags();
+ init_tags(hostdata);
#endif
#if defined (REAL_DMA)
hostdata->dma_len = 0;
@@ -2565,7 +2569,7 @@ static void NCR5380_reselect(struct Scsi_Host *instance)
* SIMPLE_QUEUE_TAG for the I_T_L_Q nexus.
*/
tag = TAG_NONE;
- if (phase == PHASE_MSGIN && setup_use_tagged_queuing) {
+ if (phase == PHASE_MSGIN && (hostdata->flags & FLAG_TAGGED_QUEUING)) {
/* Accept previous IDENTIFY message by clearing ACK */
NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE);
len = 2;
@@ -3020,7 +3024,7 @@ static int NCR5380_bus_reset(struct scsi_cmnd *cmd)
hostdata->connected = NULL;
hostdata->disconnected_queue = NULL;
#ifdef SUPPORT_TAGS
- free_all_tags();
+ free_all_tags(hostdata);
#endif
for (i = 0; i < 8; ++i)
hostdata->busy[i] = 0;
diff --git a/drivers/scsi/atari_scsi.c b/drivers/scsi/atari_scsi.c
index f0da0c8cbb0d..b69010604699 100644
--- a/drivers/scsi/atari_scsi.c
+++ b/drivers/scsi/atari_scsi.c
@@ -890,10 +890,6 @@ static int __init atari_scsi_probe(struct platform_device *pdev)
}
}
-#ifdef SUPPORT_TAGS
- if (setup_use_tagged_queuing < 0)
- setup_use_tagged_queuing = 0;
-#endif
#ifdef REAL_DMA
/* If running on a Falcon and if there's TT-Ram (i.e., more than one
@@ -929,6 +925,10 @@ static int __init atari_scsi_probe(struct platform_device *pdev)
host_flags |= IS_A_TT() ? 0 : FLAG_LATE_DMA_SETUP;
+#ifdef SUPPORT_TAGS
+ host_flags |= setup_use_tagged_queuing > 0 ? FLAG_TAGGED_QUEUING : 0;
+#endif
+
NCR5380_init(instance, host_flags);
if (IS_A_TT()) {
diff --git a/drivers/scsi/mac_scsi.c b/drivers/scsi/mac_scsi.c
index 030f3b0bb53b..953fd9b953c7 100644
--- a/drivers/scsi/mac_scsi.c
+++ b/drivers/scsi/mac_scsi.c
@@ -411,10 +411,6 @@ static int __init mac_scsi_probe(struct platform_device *pdev)
mac_scsi_template.sg_tablesize = setup_sg_tablesize;
if (setup_hostid >= 0)
mac_scsi_template.this_id = setup_hostid & 7;
-#ifdef SUPPORT_TAGS
- if (setup_use_tagged_queuing < 0)
- setup_use_tagged_queuing = 0;
-#endif
if (setup_use_pdma < 0)
setup_use_pdma = 0;
@@ -440,6 +436,10 @@ static int __init mac_scsi_probe(struct platform_device *pdev)
mac_scsi_reset_boot(instance);
#endif
+#ifdef SUPPORT_TAGS
+ host_flags |= setup_use_tagged_queuing > 0 ? FLAG_TAGGED_QUEUING : 0;
+#endif
+
NCR5380_init(instance, host_flags);
if (instance->irq != NO_IRQ) {
diff --git a/drivers/scsi/sun3_scsi.c b/drivers/scsi/sun3_scsi.c
index 985a6b36756e..a98c7325f2dd 100644
--- a/drivers/scsi/sun3_scsi.c
+++ b/drivers/scsi/sun3_scsi.c
@@ -522,6 +522,7 @@ static int __init sun3_scsi_probe(struct platform_device *pdev)
int error;
struct resource *irq, *mem;
unsigned char *ioaddr;
+ int host_flags = 0;
#ifdef SUN3_SCSI_VME
int i;
#endif
@@ -535,11 +536,6 @@ static int __init sun3_scsi_probe(struct platform_device *pdev)
if (setup_hostid >= 0)
sun3_scsi_template.this_id = setup_hostid & 7;
-#ifdef SUPPORT_TAGS
- if (setup_use_tagged_queuing < 0)
- setup_use_tagged_queuing = 1;
-#endif
-
#ifdef SUN3_SCSI_VME
ioaddr = NULL;
for (i = 0; i < 2; i++) {
@@ -601,7 +597,11 @@ static int __init sun3_scsi_probe(struct platform_device *pdev)
instance->io_port = (unsigned long)ioaddr;
instance->irq = irq->start;
- NCR5380_init(instance, 0);
+#ifdef SUPPORT_TAGS
+ host_flags |= setup_use_tagged_queuing > 0 ? FLAG_TAGGED_QUEUING : 0;
+#endif
+
+ NCR5380_init(instance, host_flags);
error = request_irq(instance->irq, scsi_sun3_intr, 0,
"NCR5380", instance);