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path: root/drivers/scsi/aha1542.c
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Diffstat (limited to 'drivers/scsi/aha1542.c')
-rw-r--r--drivers/scsi/aha1542.c104
1 files changed, 57 insertions, 47 deletions
diff --git a/drivers/scsi/aha1542.c b/drivers/scsi/aha1542.c
index ebc5476e9709..0e58cef3e8e0 100644
--- a/drivers/scsi/aha1542.c
+++ b/drivers/scsi/aha1542.c
@@ -120,39 +120,32 @@ struct aha1542_hostdata {
static DEFINE_SPINLOCK(aha1542_lock);
-
-
-#define WAITnexttimeout 3000000
-
static inline void aha1542_intr_reset(u16 base)
{
outb(IRST, CONTROL(base));
}
-#define WAIT(port, mask, allof, noneof) \
- { register int WAITbits; \
- register int WAITtimeout = WAITnexttimeout; \
- while (1) { \
- WAITbits = inb(port) & (mask); \
- if ((WAITbits & (allof)) == (allof) && ((WAITbits & (noneof)) == 0)) \
- break; \
- if (--WAITtimeout == 0) goto fail; \
- } \
- }
-
-/* Similar to WAIT, except we use the udelay call to regulate the
- amount of time we wait. */
-#define WAITd(port, mask, allof, noneof, timeout) \
- { register int WAITbits; \
- register int WAITtimeout = timeout; \
- while (1) { \
- WAITbits = inb(port) & (mask); \
- if ((WAITbits & (allof)) == (allof) && ((WAITbits & (noneof)) == 0)) \
- break; \
- mdelay(1); \
- if (--WAITtimeout == 0) goto fail; \
- } \
- }
+static inline bool wait_mask(u16 port, u8 mask, u8 allof, u8 noneof, int timeout)
+{
+ bool delayed = true;
+
+ if (timeout == 0) {
+ timeout = 3000000;
+ delayed = false;
+ }
+
+ while (1) {
+ u8 bits = inb(port) & mask;
+ if ((bits & allof) == allof && ((bits & noneof) == 0))
+ break;
+ if (delayed)
+ mdelay(1);
+ if (--timeout == 0)
+ return false;
+ }
+
+ return true;
+}
/* This is a bit complicated, but we need to make sure that an interrupt
routine does not send something out while we are in the middle of this.
@@ -166,7 +159,8 @@ static int aha1542_out(unsigned int base, u8 *cmdp, int len)
if (len == 1) {
got_lock = 0;
while (1 == 1) {
- WAIT(STATUS(base), CDF, 0, CDF);
+ if (!wait_mask(STATUS(base), CDF, 0, CDF, 0))
+ goto fail;
spin_lock_irqsave(&aha1542_lock, flags);
if (inb(STATUS(base)) & CDF) {
spin_unlock_irqrestore(&aha1542_lock, flags);
@@ -180,7 +174,8 @@ static int aha1542_out(unsigned int base, u8 *cmdp, int len)
spin_lock_irqsave(&aha1542_lock, flags);
got_lock = 1;
while (len--) {
- WAIT(STATUS(base), CDF, 0, CDF);
+ if (!wait_mask(STATUS(base), CDF, 0, CDF, 0))
+ goto fail;
outb(*cmdp++, DATA(base));
}
spin_unlock_irqrestore(&aha1542_lock, flags);
@@ -202,7 +197,8 @@ static int aha1542_in(unsigned int base, u8 *cmdp, int len)
spin_lock_irqsave(&aha1542_lock, flags);
while (len--) {
- WAIT(STATUS(base), DF, DF, 0);
+ if (!wait_mask(STATUS(base), DF, DF, 0, 0))
+ goto fail;
*cmdp++ = inb(DATA(base));
}
spin_unlock_irqrestore(&aha1542_lock, flags);
@@ -222,7 +218,8 @@ static int aha1542_in1(unsigned int base, u8 *cmdp, int len)
spin_lock_irqsave(&aha1542_lock, flags);
while (len--) {
- WAITd(STATUS(base), DF, DF, 0, 100);
+ if (!wait_mask(STATUS(base), DF, DF, 0, 100))
+ goto fail;
*cmdp++ = inb(DATA(base));
}
spin_unlock_irqrestore(&aha1542_lock, flags);
@@ -313,7 +310,8 @@ static int aha1542_test_port(int bse, struct Scsi_Host *shpnt)
debug = 1;
/* Expect INIT and IDLE, any of the others are bad */
- WAIT(STATUS(bse), STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF);
+ if (!wait_mask(STATUS(bse), STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0))
+ goto fail;
debug = 2;
/* Shouldn't have generated any interrupts during reset */
@@ -331,7 +329,8 @@ static int aha1542_test_port(int bse, struct Scsi_Host *shpnt)
cmdp = &inquiry_result[0];
while (len--) {
- WAIT(STATUS(bse), DF, DF, 0);
+ if (!wait_mask(STATUS(bse), DF, DF, 0, 0))
+ goto fail;
*cmdp++ = inb(DATA(bse));
}
@@ -342,7 +341,8 @@ static int aha1542_test_port(int bse, struct Scsi_Host *shpnt)
debug = 9;
/* When HACC, command is completed, and we're though testing */
- WAIT(INTRFLAGS(bse), HACC, HACC, 0);
+ if (!wait_mask(INTRFLAGS(bse), HACC, HACC, 0, 0))
+ goto fail;
/* now initialize adapter */
debug = 10;
@@ -711,7 +711,8 @@ static void setup_mailboxes(int bse, struct Scsi_Host *shpnt)
aha1542_intr_reset(bse); /* reset interrupts, so they don't block */
any2scsi((cmd + 2), isa_virt_to_bus(mb));
aha1542_out(bse, cmd, 5);
- WAIT(INTRFLAGS(bse), INTRMASK, HACC, 0);
+ if (!wait_mask(INTRFLAGS(bse), INTRMASK, HACC, 0, 0))
+ goto fail;
while (0) {
fail:
printk(KERN_ERR "aha1542_detect: failed setting up mailboxes\n");
@@ -730,7 +731,8 @@ static int aha1542_getconfig(int base_io, unsigned char *irq_level, unsigned cha
};
aha1542_out(base_io, inquiry_cmd, 1);
aha1542_in(base_io, inquiry_result, 3);
- WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0);
+ if (!wait_mask(INTRFLAGS(base_io), INTRMASK, HACC, 0, 0))
+ goto fail;
while (0) {
fail:
printk(KERN_ERR "aha1542_detect: query board settings\n");
@@ -800,7 +802,8 @@ static int aha1542_mbenable(int base)
aha1542_out(base, mbenable_cmd, 1);
if (aha1542_in1(base, mbenable_result, 2))
return retval;
- WAITd(INTRFLAGS(base), INTRMASK, HACC, 0, 100);
+ if (!wait_mask(INTRFLAGS(base), INTRMASK, HACC, 0, 100))
+ goto fail;
aha1542_intr_reset(base);
if ((mbenable_result[0] & 0x08) || mbenable_result[1]) {
@@ -812,7 +815,8 @@ static int aha1542_mbenable(int base)
retval = BIOS_TRANSLATION_25563;
aha1542_out(base, mbenable_cmd, 3);
- WAIT(INTRFLAGS(base), INTRMASK, HACC, 0);
+ if (!wait_mask(INTRFLAGS(base), INTRMASK, HACC, 0, 0))
+ goto fail;
};
while (0) {
fail:
@@ -834,7 +838,8 @@ static int aha1542_query(int base_io, int *transl)
};
aha1542_out(base_io, inquiry_cmd, 1);
aha1542_in(base_io, inquiry_result, 4);
- WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0);
+ if (!wait_mask(INTRFLAGS(base_io), INTRMASK, HACC, 0, 0))
+ goto fail;
while (0) {
fail:
printk(KERN_ERR "aha1542_detect: query card type\n");
@@ -978,16 +983,19 @@ static struct Scsi_Host *aha1542_hw_init(struct scsi_host_template *tpnt, struct
}
aha1542_intr_reset(base_io);
aha1542_out(base_io, oncmd, 2);
- WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0);
+ if (!wait_mask(INTRFLAGS(base_io), INTRMASK, HACC, 0, 0))
+ goto fail;
aha1542_intr_reset(base_io);
aha1542_out(base_io, offcmd, 2);
- WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0);
+ if (!wait_mask(INTRFLAGS(base_io), INTRMASK, HACC, 0, 0))
+ goto fail;
if (setup_dmaspeed[indx] >= 0) {
u8 dmacmd[] = {CMD_DMASPEED, 0};
dmacmd[1] = setup_dmaspeed[indx];
aha1542_intr_reset(base_io);
aha1542_out(base_io, dmacmd, 2);
- WAIT(INTRFLAGS(base_io), INTRMASK, HACC, 0);
+ if (!wait_mask(INTRFLAGS(base_io), INTRMASK, HACC, 0, 0))
+ goto fail;
}
while (0) {
fail:
@@ -1162,8 +1170,9 @@ static int aha1542_bus_reset(Scsi_Cmnd * SCpnt)
spin_lock_irq(SCpnt->device->host->host_lock);
- WAIT(STATUS(SCpnt->device->host->io_port),
- STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF);
+ if (!wait_mask(STATUS(SCpnt->device->host->io_port),
+ STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0))
+ goto fail;
/*
* Now try to pick up the pieces. For all pending commands,
@@ -1226,8 +1235,9 @@ static int aha1542_host_reset(Scsi_Cmnd * SCpnt)
ssleep(4);
spin_lock_irq(SCpnt->device->host->host_lock);
- WAIT(STATUS(SCpnt->device->host->io_port),
- STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF);
+ if (!wait_mask(STATUS(SCpnt->device->host->io_port),
+ STATMASK, INIT | IDLE, STST | DIAGF | INVDCMD | DF | CDF, 0))
+ goto fail;
/*
* We need to do this too before the 1542 can interact with
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-20 23:59:22 +0000