diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c
index d597d7493a627e718ae5914a7e082548ac5670a5..2ddbcaa667d1e8f98da8cb3e4338ff278cf3236b 100644
--- a/drivers/scsi/NCR5380.c
+++ b/drivers/scsi/NCR5380.c
@@ -132,7 +132,7 @@
static unsigned int disconnect_mask = ~0;
module_param(disconnect_mask, int, 0444);
-static int do_abort(struct Scsi_Host *);
+static int do_abort(struct Scsi_Host *, unsigned int);
static void do_reset(struct Scsi_Host *);
static void bus_reset_cleanup(struct Scsi_Host *);
@@ -197,7 +197,7 @@ static inline void set_resid_from_SCp(struct scsi_cmnd *cmd)
* @reg2: Second 5380 register to poll
* @bit2: Second bitmask to check
* @val2: Second expected value
- * @wait: Time-out in jiffies
+ * @wait: Time-out in jiffies, 0 if sleeping is not allowed
*
* Polls the chip in a reasonably efficient manner waiting for an
* event to occur. After a short quick poll we begin to yield the CPU
@@ -223,7 +223,7 @@ static int NCR5380_poll_politely2(struct NCR5380_hostdata *hostdata,
cpu_relax();
} while (n--);
- if (irqs_disabled() || in_interrupt())
+ if (!wait)
return -ETIMEDOUT;
/* Repeatedly sleep for 1 ms until deadline */
@@ -486,7 +486,7 @@ static int NCR5380_maybe_reset_bus(struct Scsi_Host *instance)
break;
case 2:
shost_printk(KERN_ERR, instance, "bus busy, attempting abort\n");
- do_abort(instance);
+ do_abort(instance, 1);
break;
case 4:
shost_printk(KERN_ERR, instance, "bus busy, attempting reset\n");
@@ -822,7 +822,7 @@ static void NCR5380_dma_complete(struct Scsi_Host *instance)
if (toPIO > 0) {
dsprintk(NDEBUG_DMA, instance,
"Doing %d byte PIO to 0x%p\n", cnt, *data);
- NCR5380_transfer_pio(instance, &p, &cnt, data);
+ NCR5380_transfer_pio(instance, &p, &cnt, data, 0);
*count -= toPIO - cnt;
}
}
@@ -1189,7 +1189,7 @@ static bool NCR5380_select(struct Scsi_Host *instance, struct scsi_cmnd *cmd)
goto out;
}
if (!hostdata->selecting) {
- do_abort(instance);
+ do_abort(instance, 0);
return false;
}
@@ -1200,7 +1200,7 @@ static bool NCR5380_select(struct Scsi_Host *instance, struct scsi_cmnd *cmd)
len = 1;
data = tmp;
phase = PHASE_MSGOUT;
- NCR5380_transfer_pio(instance, &phase, &len, &data);
+ NCR5380_transfer_pio(instance, &phase, &len, &data, 0);
if (len) {
NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE);
cmd->result = DID_ERROR << 16;
@@ -1238,7 +1238,8 @@ static bool NCR5380_select(struct Scsi_Host *instance, struct scsi_cmnd *cmd)
*
* Inputs : instance - instance of driver, *phase - pointer to
* what phase is expected, *count - pointer to number of
- * bytes to transfer, **data - pointer to data pointer.
+ * bytes to transfer, **data - pointer to data pointer,
+ * can_sleep - 1 or 0 when sleeping is permitted or not, respectively.
*
* Returns : -1 when different phase is entered without transferring
* maximum number of bytes, 0 if all bytes are transferred or exit
@@ -1257,7 +1258,7 @@ static bool NCR5380_select(struct Scsi_Host *instance, struct scsi_cmnd *cmd)
static int NCR5380_transfer_pio(struct Scsi_Host *instance,
unsigned char *phase, int *count,
- unsigned char **data)
+ unsigned char **data, unsigned int can_sleep)
{
struct NCR5380_hostdata *hostdata = shost_priv(instance);
unsigned char p = *phase, tmp;
@@ -1278,7 +1279,8 @@ static int NCR5380_transfer_pio(struct Scsi_Host *instance,
* valid
*/
- if (NCR5380_poll_politely(hostdata, STATUS_REG, SR_REQ, SR_REQ, HZ) < 0)
+ if (NCR5380_poll_politely(hostdata, STATUS_REG, SR_REQ, SR_REQ,
+ HZ * can_sleep) < 0)
break;
dsprintk(NDEBUG_HANDSHAKE, instance, "REQ asserted\n");
@@ -1324,7 +1326,7 @@ static int NCR5380_transfer_pio(struct Scsi_Host *instance,
}
if (NCR5380_poll_politely(hostdata,
- STATUS_REG, SR_REQ, 0, 5 * HZ) < 0)
+ STATUS_REG, SR_REQ, 0, 5 * HZ * can_sleep) < 0)
break;
dsprintk(NDEBUG_HANDSHAKE, instance, "REQ negated, handshake complete\n");
@@ -1399,11 +1401,12 @@ static void do_reset(struct Scsi_Host *instance)
* do_abort - abort the currently established nexus by going to
* MESSAGE OUT phase and sending an ABORT message.
* @instance: relevant scsi host instance
+ * @can_sleep: 1 or 0 when sleeping is permitted or not, respectively
*
* Returns 0 on success, negative error code on failure.
*/
-static int do_abort(struct Scsi_Host *instance)
+static int do_abort(struct Scsi_Host *instance, unsigned int can_sleep)
{
struct NCR5380_hostdata *hostdata = shost_priv(instance);
unsigned char *msgptr, phase, tmp;
@@ -1423,7 +1426,8 @@ static int do_abort(struct Scsi_Host *instance)
* the target sees, so we just handshake.
*/
- rc = NCR5380_poll_politely(hostdata, STATUS_REG, SR_REQ, SR_REQ, 10 * HZ);
+ rc = NCR5380_poll_politely(hostdata, STATUS_REG, SR_REQ, SR_REQ,
+ 10 * HZ * can_sleep);
if (rc < 0)
goto out;
@@ -1434,7 +1438,8 @@ static int do_abort(struct Scsi_Host *instance)
if (tmp != PHASE_MSGOUT) {
NCR5380_write(INITIATOR_COMMAND_REG,
ICR_BASE | ICR_ASSERT_ATN | ICR_ASSERT_ACK);
- rc = NCR5380_poll_politely(hostdata, STATUS_REG, SR_REQ, 0, 3 * HZ);
+ rc = NCR5380_poll_politely(hostdata, STATUS_REG, SR_REQ, 0,
+ 3 * HZ * can_sleep);
if (rc < 0)
goto out;
NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE | ICR_ASSERT_ATN);
@@ -1444,7 +1449,7 @@ static int do_abort(struct Scsi_Host *instance)
msgptr = &tmp;
len = 1;
phase = PHASE_MSGOUT;
- NCR5380_transfer_pio(instance, &phase, &len, &msgptr);
+ NCR5380_transfer_pio(instance, &phase, &len, &msgptr, can_sleep);
if (len)
rc = -ENXIO;
@@ -1623,12 +1628,12 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance,
*/
if (NCR5380_poll_politely(hostdata, BUS_AND_STATUS_REG,
- BASR_DRQ, BASR_DRQ, HZ) < 0) {
+ BASR_DRQ, BASR_DRQ, 0) < 0) {
result = -1;
shost_printk(KERN_ERR, instance, "PDMA read: DRQ timeout\n");
}
if (NCR5380_poll_politely(hostdata, STATUS_REG,
- SR_REQ, 0, HZ) < 0) {
+ SR_REQ, 0, 0) < 0) {
result = -1;
shost_printk(KERN_ERR, instance, "PDMA read: !REQ timeout\n");
}
@@ -1640,7 +1645,7 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance,
*/
if (NCR5380_poll_politely2(hostdata,
BUS_AND_STATUS_REG, BASR_DRQ, BASR_DRQ,
- BUS_AND_STATUS_REG, BASR_PHASE_MATCH, 0, HZ) < 0) {
+ BUS_AND_STATUS_REG, BASR_PHASE_MATCH, 0, 0) < 0) {
result = -1;
shost_printk(KERN_ERR, instance, "PDMA write: DRQ and phase timeout\n");
}
@@ -1737,7 +1742,7 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
#if (NDEBUG & NDEBUG_NO_DATAOUT)
shost_printk(KERN_DEBUG, instance, "NDEBUG_NO_DATAOUT set, attempted DATAOUT aborted\n");
sink = 1;
- do_abort(instance);
+ do_abort(instance, 0);
cmd->result = DID_ERROR << 16;
complete_cmd(instance, cmd);
hostdata->connected = NULL;
@@ -1793,7 +1798,8 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
NCR5380_PIO_CHUNK_SIZE);
len = transfersize;
NCR5380_transfer_pio(instance, &phase, &len,
- (unsigned char **)&cmd->SCp.ptr);
+ (unsigned char **)&cmd->SCp.ptr,
+ 0);
cmd->SCp.this_residual -= transfersize - len;
}
#ifdef CONFIG_SUN3
@@ -1804,7 +1810,7 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
case PHASE_MSGIN:
len = 1;
data = &tmp;
- NCR5380_transfer_pio(instance, &phase, &len, &data);
+ NCR5380_transfer_pio(instance, &phase, &len, &data, 0);
cmd->SCp.Message = tmp;
switch (tmp) {
@@ -1910,7 +1916,7 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
len = 2;
data = extended_msg + 1;
phase = PHASE_MSGIN;
- NCR5380_transfer_pio(instance, &phase, &len, &data);
+ NCR5380_transfer_pio(instance, &phase, &len, &data, 1);
dsprintk(NDEBUG_EXTENDED, instance, "length %d, code 0x%02x\n",
(int)extended_msg[1],
(int)extended_msg[2]);
@@ -1923,7 +1929,7 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
data = extended_msg + 3;
phase = PHASE_MSGIN;
- NCR5380_transfer_pio(instance, &phase, &len, &data);
+ NCR5380_transfer_pio(instance, &phase, &len, &data, 1);
dsprintk(NDEBUG_EXTENDED, instance, "message received, residual %d\n",
len);
@@ -1970,7 +1976,7 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
len = 1;
data = &msgout;
hostdata->last_message = msgout;
- NCR5380_transfer_pio(instance, &phase, &len, &data);
+ NCR5380_transfer_pio(instance, &phase, &len, &data, 0);
if (msgout == ABORT) {
hostdata->connected = NULL;
hostdata->busy[scmd_id(cmd)] &= ~(1 << cmd->device->lun);
@@ -1988,12 +1994,12 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
* PSEUDO-DMA architecture we should probably
* use the dma transfer function.
*/
- NCR5380_transfer_pio(instance, &phase, &len, &data);
+ NCR5380_transfer_pio(instance, &phase, &len, &data, 0);
break;
case PHASE_STATIN:
len = 1;
data = &tmp;
- NCR5380_transfer_pio(instance, &phase, &len, &data);
+ NCR5380_transfer_pio(instance, &phase, &len, &data, 0);
cmd->SCp.Status = tmp;
break;
default:
@@ -2052,7 +2058,7 @@ static void NCR5380_reselect(struct Scsi_Host *instance)
NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE | ICR_ASSERT_BSY);
if (NCR5380_poll_politely(hostdata,
- STATUS_REG, SR_SEL, 0, 2 * HZ) < 0) {
+ STATUS_REG, SR_SEL, 0, 0) < 0) {
shost_printk(KERN_ERR, instance, "reselect: !SEL timeout\n");
NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE);
return;
@@ -2064,12 +2070,12 @@ static void NCR5380_reselect(struct Scsi_Host *instance)
*/
if (NCR5380_poll_politely(hostdata,
- STATUS_REG, SR_REQ, SR_REQ, 2 * HZ) < 0) {
+ STATUS_REG, SR_REQ, SR_REQ, 0) < 0) {
if ((NCR5380_read(STATUS_REG) & (SR_BSY | SR_SEL)) == 0)
/* BUS FREE phase */
return;
shost_printk(KERN_ERR, instance, "reselect: REQ timeout\n");
- do_abort(instance);
+ do_abort(instance, 0);
return;
}
@@ -2085,10 +2091,10 @@ static void NCR5380_reselect(struct Scsi_Host *instance)
unsigned char *data = msg;
unsigned char phase = PHASE_MSGIN;
- NCR5380_transfer_pio(instance, &phase, &len, &data);
+ NCR5380_transfer_pio(instance, &phase, &len, &data, 0);
if (len) {
- do_abort(instance);
+ do_abort(instance, 0);
return;
}
}
@@ -2098,7 +2104,7 @@ static void NCR5380_reselect(struct Scsi_Host *instance)
shost_printk(KERN_ERR, instance, "expecting IDENTIFY message, got ");
spi_print_msg(msg);
printk("\n");
- do_abort(instance);
+ do_abort(instance, 0);
return;
}
lun = msg[0] & 0x07;
@@ -2138,7 +2144,7 @@ static void NCR5380_reselect(struct Scsi_Host *instance)
* Since we have an established nexus that we can't do anything
* with, we must abort it.
*/
- if (do_abort(instance) == 0)
+ if (do_abort(instance, 0) == 0)
hostdata->busy[target] &= ~(1 << lun);
return;
}
@@ -2285,7 +2291,7 @@ static int NCR5380_abort(struct scsi_cmnd *cmd)
dsprintk(NDEBUG_ABORT, instance, "abort: cmd %p is connected\n", cmd);
hostdata->connected = NULL;
hostdata->dma_len = 0;
- if (do_abort(instance) < 0) {
+ if (do_abort(instance, 0) < 0) {
set_host_byte(cmd, DID_ERROR);
complete_cmd(instance, cmd);
result = FAILED;
diff --git a/drivers/scsi/NCR5380.h b/drivers/scsi/NCR5380.h
index 5935fd6d1a0581178c6e4676d25c740415899cb0..8a3b41932288eb7ceb6151be1a3b7e0a7d2e2cd4 100644
--- a/drivers/scsi/NCR5380.h
+++ b/drivers/scsi/NCR5380.h
@@ -277,7 +277,8 @@ static const char *NCR5380_info(struct Scsi_Host *instance);
static void NCR5380_reselect(struct Scsi_Host *instance);
static bool NCR5380_select(struct Scsi_Host *, struct scsi_cmnd *);
static int NCR5380_transfer_dma(struct Scsi_Host *instance, unsigned char *phase, int *count, unsigned char **data);
-static int NCR5380_transfer_pio(struct Scsi_Host *instance, unsigned char *phase, int *count, unsigned char **data);
+static int NCR5380_transfer_pio(struct Scsi_Host *instance, unsigned char *phase, int *count, unsigned char **data,
+ unsigned int can_sleep);
static int NCR5380_poll_politely2(struct NCR5380_hostdata *,
unsigned int, u8, u8,
unsigned int, u8, u8, unsigned long);
diff --git a/drivers/scsi/g_NCR5380.c b/drivers/scsi/g_NCR5380.c
index 29e4cdcade7201166a7751e157dbb1561d29740b..2df2f38a9b1228fd984ed6a34639fea1e1265d31 100644
--- a/drivers/scsi/g_NCR5380.c
+++ b/drivers/scsi/g_NCR5380.c
@@ -529,14 +529,14 @@ static inline int generic_NCR5380_precv(struct NCR5380_hostdata *hostdata,
if (start == len - 128) {
/* Ignore End of DMA interrupt for the final buffer */
if (NCR5380_poll_politely(hostdata, hostdata->c400_ctl_status,
- CSR_HOST_BUF_NOT_RDY, 0, HZ / 64) < 0)
+ CSR_HOST_BUF_NOT_RDY, 0, 0) < 0)
break;
} else {
if (NCR5380_poll_politely2(hostdata, hostdata->c400_ctl_status,
CSR_HOST_BUF_NOT_RDY, 0,
hostdata->c400_ctl_status,
CSR_GATED_53C80_IRQ,
- CSR_GATED_53C80_IRQ, HZ / 64) < 0 ||
+ CSR_GATED_53C80_IRQ, 0) < 0 ||
NCR5380_read(hostdata->c400_ctl_status) & CSR_HOST_BUF_NOT_RDY)
break;
}
@@ -565,7 +565,7 @@ static inline int generic_NCR5380_precv(struct NCR5380_hostdata *hostdata,
if (residual == 0 && NCR5380_poll_politely(hostdata, BUS_AND_STATUS_REG,
BASR_END_DMA_TRANSFER,
BASR_END_DMA_TRANSFER,
- HZ / 64) < 0)
+ 0) < 0)
scmd_printk(KERN_ERR, hostdata->connected, "%s: End of DMA timeout\n",
__func__);
@@ -597,7 +597,7 @@ static inline int generic_NCR5380_psend(struct NCR5380_hostdata *hostdata,
CSR_HOST_BUF_NOT_RDY, 0,
hostdata->c400_ctl_status,
CSR_GATED_53C80_IRQ,
- CSR_GATED_53C80_IRQ, HZ / 64) < 0 ||
+ CSR_GATED_53C80_IRQ, 0) < 0 ||
NCR5380_read(hostdata->c400_ctl_status) & CSR_HOST_BUF_NOT_RDY) {
/* Both 128 B buffers are in use */
if (start >= 128)
@@ -644,13 +644,13 @@ static inline int generic_NCR5380_psend(struct NCR5380_hostdata *hostdata,
if (residual == 0) {
if (NCR5380_poll_politely(hostdata, TARGET_COMMAND_REG,
TCR_LAST_BYTE_SENT, TCR_LAST_BYTE_SENT,
- HZ / 64) < 0)
+ 0) < 0)
scmd_printk(KERN_ERR, hostdata->connected,
"%s: Last Byte Sent timeout\n", __func__);
if (NCR5380_poll_politely(hostdata, BUS_AND_STATUS_REG,
BASR_END_DMA_TRANSFER, BASR_END_DMA_TRANSFER,
- HZ / 64) < 0)
+ 0) < 0)
scmd_printk(KERN_ERR, hostdata->connected, "%s: End of DMA timeout\n",
__func__);
}
diff --git a/drivers/scsi/mac_scsi.c b/drivers/scsi/mac_scsi.c
index b5dde9d0d0545093ca3591fb28aef5ecb4a46685..5c808fbc6ce2c8f7c4872b8beeeb818b3ab5bfd1 100644
--- a/drivers/scsi/mac_scsi.c
+++ b/drivers/scsi/mac_scsi.c
@@ -285,7 +285,7 @@ static inline int macscsi_pread(struct NCR5380_hostdata *hostdata,
while (!NCR5380_poll_politely(hostdata, BUS_AND_STATUS_REG,
BASR_DRQ | BASR_PHASE_MATCH,
- BASR_DRQ | BASR_PHASE_MATCH, HZ / 64)) {
+ BASR_DRQ | BASR_PHASE_MATCH, 0)) {
int bytes;
if (macintosh_config->ident == MAC_MODEL_IIFX)
@@ -304,7 +304,7 @@ static inline int macscsi_pread(struct NCR5380_hostdata *hostdata,
if (NCR5380_poll_politely2(hostdata, STATUS_REG, SR_REQ, SR_REQ,
BUS_AND_STATUS_REG, BASR_ACK,
- BASR_ACK, HZ / 64) < 0)
+ BASR_ACK, 0) < 0)
scmd_printk(KERN_DEBUG, hostdata->connected,
"%s: !REQ and !ACK\n", __func__);
if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_PHASE_MATCH))
@@ -344,7 +344,7 @@ static inline int macscsi_pwrite(struct NCR5380_hostdata *hostdata,
while (!NCR5380_poll_politely(hostdata, BUS_AND_STATUS_REG,
BASR_DRQ | BASR_PHASE_MATCH,
- BASR_DRQ | BASR_PHASE_MATCH, HZ / 64)) {
+ BASR_DRQ | BASR_PHASE_MATCH, 0)) {
int bytes;
if (macintosh_config->ident == MAC_MODEL_IIFX)
@@ -362,7 +362,7 @@ static inline int macscsi_pwrite(struct NCR5380_hostdata *hostdata,
if (NCR5380_poll_politely(hostdata, TARGET_COMMAND_REG,
TCR_LAST_BYTE_SENT,
TCR_LAST_BYTE_SENT,
- HZ / 64) < 0) {
+ 0) < 0) {
scmd_printk(KERN_ERR, hostdata->connected,
"%s: Last Byte Sent timeout\n", __func__);
result = -1;
@@ -372,7 +372,7 @@ static inline int macscsi_pwrite(struct NCR5380_hostdata *hostdata,
if (NCR5380_poll_politely2(hostdata, STATUS_REG, SR_REQ, SR_REQ,
BUS_AND_STATUS_REG, BASR_ACK,
- BASR_ACK, HZ / 64) < 0)
+ BASR_ACK, 0) < 0)
scmd_printk(KERN_DEBUG, hostdata->connected,
"%s: !REQ and !ACK\n", __func__);
if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_PHASE_MATCH))