aboutsummaryrefslogtreecommitdiff
path: root/drivers/scsi/dtc.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/scsi/dtc.c')
-rw-r--r--drivers/scsi/dtc.c115
1 files changed, 57 insertions, 58 deletions
diff --git a/drivers/scsi/dtc.c b/drivers/scsi/dtc.c
index 4c74c7ba2dff..6c736b071cf4 100644
--- a/drivers/scsi/dtc.c
+++ b/drivers/scsi/dtc.c
@@ -1,9 +1,5 @@
-
#define PSEUDO_DMA
#define DONT_USE_INTR
-#define UNSAFE /* Leave interrupts enabled during pseudo-dma I/O */
-#define DMA_WORKS_RIGHT
-
/*
* DTC 3180/3280 driver, by
@@ -50,15 +46,13 @@
#include <linux/module.h>
-#include <linux/signal.h>
#include <linux/blkdev.h>
-#include <linux/delay.h>
-#include <linux/stat.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <scsi/scsi_host.h>
+
#include "dtc.h"
#define AUTOPROBE_IRQ
#include "NCR5380.h"
@@ -150,7 +144,7 @@ static const struct signature {
static int __init dtc_setup(char *str)
{
- static int commandline_current = 0;
+ static int commandline_current;
int i;
int ints[10];
@@ -188,7 +182,7 @@ __setup("dtc=", dtc_setup);
static int __init dtc_detect(struct scsi_host_template * tpnt)
{
- static int current_override = 0, current_base = 0;
+ static int current_override, current_base;
struct Scsi_Host *instance;
unsigned int addr;
void __iomem *base;
@@ -205,9 +199,8 @@ static int __init dtc_detect(struct scsi_host_template * tpnt)
addr = 0;
} else
for (; !addr && (current_base < NO_BASES); ++current_base) {
-#if (DTCDEBUG & DTCDEBUG_INIT)
- printk(KERN_DEBUG "scsi-dtc : probing address %08x\n", bases[current_base].address);
-#endif
+ dprintk(NDEBUG_INIT, "dtc: probing address 0x%08x\n",
+ (unsigned int)bases[current_base].address);
if (bases[current_base].noauto)
continue;
base = ioremap(bases[current_base].address, 0x2000);
@@ -216,18 +209,14 @@ static int __init dtc_detect(struct scsi_host_template * tpnt)
for (sig = 0; sig < NO_SIGNATURES; ++sig) {
if (check_signature(base + signatures[sig].offset, signatures[sig].string, strlen(signatures[sig].string))) {
addr = bases[current_base].address;
-#if (DTCDEBUG & DTCDEBUG_INIT)
- printk(KERN_DEBUG "scsi-dtc : detected board.\n");
-#endif
+ dprintk(NDEBUG_INIT, "dtc: detected board\n");
goto found;
}
}
iounmap(base);
}
-#if defined(DTCDEBUG) && (DTCDEBUG & DTCDEBUG_INIT)
- printk(KERN_DEBUG "scsi-dtc : base = %08x\n", addr);
-#endif
+ dprintk(NDEBUG_INIT, "dtc: addr = 0x%08x\n", addr);
if (!addr)
break;
@@ -235,12 +224,15 @@ static int __init dtc_detect(struct scsi_host_template * tpnt)
found:
instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata));
if (instance == NULL)
- break;
+ goto out_unmap;
instance->base = addr;
((struct NCR5380_hostdata *)(instance)->hostdata)->base = base;
- NCR5380_init(instance, 0);
+ if (NCR5380_init(instance, FLAG_NO_DMA_FIXUP))
+ goto out_unregister;
+
+ NCR5380_maybe_reset_bus(instance);
NCR5380_write(DTC_CONTROL_REG, CSR_5380_INTR); /* Enable int's */
if (overrides[current_override].irq != IRQ_AUTO)
@@ -271,14 +263,19 @@ found:
printk(KERN_WARNING "scsi%d : interrupts not used. Might as well not jumper it.\n", instance->host_no);
instance->irq = NO_IRQ;
#endif
-#if defined(DTCDEBUG) && (DTCDEBUG & DTCDEBUG_INIT)
- printk("scsi%d : irq = %d\n", instance->host_no, instance->irq);
-#endif
+ dprintk(NDEBUG_INIT, "scsi%d : irq = %d\n",
+ instance->host_no, instance->irq);
++current_override;
++count;
}
return count;
+
+out_unregister:
+ scsi_unregister(instance);
+out_unmap:
+ iounmap(base);
+ return count;
}
/*
@@ -331,12 +328,8 @@ static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst,
unsigned char *d = dst;
int i; /* For counting time spent in the poll-loop */
struct NCR5380_hostdata *hostdata = shost_priv(instance);
- NCR5380_local_declare();
- NCR5380_setup(instance);
i = 0;
- NCR5380_read(RESET_PARITY_INTERRUPT_REG);
- NCR5380_write(MODE_REG, MR_ENABLE_EOP_INTR | MR_DMA_MODE);
if (instance->irq == NO_IRQ)
NCR5380_write(DTC_CONTROL_REG, CSR_DIR_READ);
else
@@ -348,7 +341,7 @@ static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst,
while (NCR5380_read(DTC_CONTROL_REG) & CSR_HOST_BUF_NOT_RDY)
++i;
rtrc(3);
- memcpy_fromio(d, base + DTC_DATA_BUF, 128);
+ memcpy_fromio(d, hostdata->base + DTC_DATA_BUF, 128);
d += 128;
len -= 128;
rtrc(7);
@@ -358,9 +351,7 @@ static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst,
rtrc(4);
while (!(NCR5380_read(DTC_CONTROL_REG) & D_CR_ACCESS))
++i;
- NCR5380_write(MODE_REG, 0); /* Clear the operating mode */
rtrc(0);
- NCR5380_read(RESET_PARITY_INTERRUPT_REG);
if (i > hostdata->spin_max_r)
hostdata->spin_max_r = i;
return (0);
@@ -383,12 +374,7 @@ static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src,
{
int i;
struct NCR5380_hostdata *hostdata = shost_priv(instance);
- NCR5380_local_declare();
- NCR5380_setup(instance);
- NCR5380_read(RESET_PARITY_INTERRUPT_REG);
- NCR5380_write(MODE_REG, MR_ENABLE_EOP_INTR | MR_DMA_MODE);
- /* set direction (write) */
if (instance->irq == NO_IRQ)
NCR5380_write(DTC_CONTROL_REG, 0);
else
@@ -400,7 +386,7 @@ static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src,
while (NCR5380_read(DTC_CONTROL_REG) & CSR_HOST_BUF_NOT_RDY)
++i;
rtrc(3);
- memcpy_toio(base + DTC_DATA_BUF, src, 128);
+ memcpy_toio(hostdata->base + DTC_DATA_BUF, src, 128);
src += 128;
len -= 128;
}
@@ -413,47 +399,60 @@ static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src,
++i;
rtrc(7);
/* Check for parity error here. fixme. */
- NCR5380_write(MODE_REG, 0); /* Clear the operating mode */
rtrc(0);
if (i > hostdata->spin_max_w)
hostdata->spin_max_w = i;
return (0);
}
+static int dtc_dma_xfer_len(struct scsi_cmnd *cmd)
+{
+ int transfersize = cmd->transfersize;
+
+ /* Limit transfers to 32K, for xx400 & xx406
+ * pseudoDMA that transfers in 128 bytes blocks.
+ */
+ if (transfersize > 32 * 1024 && cmd->SCp.this_residual &&
+ !(cmd->SCp.this_residual % transfersize))
+ transfersize = 32 * 1024;
+
+ return transfersize;
+}
+
MODULE_LICENSE("GPL");
#include "NCR5380.c"
static int dtc_release(struct Scsi_Host *shost)
{
- NCR5380_local_declare();
- NCR5380_setup(shost);
+ struct NCR5380_hostdata *hostdata = shost_priv(shost);
+
if (shost->irq != NO_IRQ)
free_irq(shost->irq, shost);
NCR5380_exit(shost);
- if (shost->io_port && shost->n_io_port)
- release_region(shost->io_port, shost->n_io_port);
scsi_unregister(shost);
- iounmap(base);
+ iounmap(hostdata->base);
return 0;
}
static struct scsi_host_template driver_template = {
- .name = "DTC 3180/3280 ",
- .detect = dtc_detect,
- .release = dtc_release,
- .proc_name = "dtc3x80",
- .show_info = dtc_show_info,
- .write_info = dtc_write_info,
- .info = dtc_info,
- .queuecommand = dtc_queue_command,
- .eh_abort_handler = dtc_abort,
- .eh_bus_reset_handler = dtc_bus_reset,
- .bios_param = dtc_biosparam,
- .can_queue = CAN_QUEUE,
- .this_id = 7,
- .sg_tablesize = SG_ALL,
- .cmd_per_lun = CMD_PER_LUN,
- .use_clustering = DISABLE_CLUSTERING,
+ .name = "DTC 3180/3280",
+ .detect = dtc_detect,
+ .release = dtc_release,
+ .proc_name = "dtc3x80",
+ .show_info = dtc_show_info,
+ .write_info = dtc_write_info,
+ .info = dtc_info,
+ .queuecommand = dtc_queue_command,
+ .eh_abort_handler = dtc_abort,
+ .eh_bus_reset_handler = dtc_bus_reset,
+ .bios_param = dtc_biosparam,
+ .can_queue = 32,
+ .this_id = 7,
+ .sg_tablesize = SG_ALL,
+ .cmd_per_lun = 2,
+ .use_clustering = DISABLE_CLUSTERING,
+ .cmd_size = NCR5380_CMD_SIZE,
+ .max_sectors = 128,
};
#include "scsi_module.c"
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-15 09:12:02 +0000