diff options
Diffstat (limited to 'drivers/scsi')
-rw-r--r-- | drivers/scsi/NCR5380.c | 74 | ||||
-rw-r--r-- | drivers/scsi/NCR5380.h | 3 | ||||
-rw-r--r-- | drivers/scsi/g_NCR5380.c | 12 | ||||
-rw-r--r-- | drivers/scsi/mac_scsi.c | 10 |
4 files changed, 53 insertions, 46 deletions
diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c index d597d7493a62..2ddbcaa667d1 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 @@ out: * * 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 @@ out: 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 5935fd6d1a05..8a3b41932288 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 29e4cdcade72..2df2f38a9b12 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 b5dde9d0d054..5c808fbc6ce2 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)) |