diff options
author | Finn Thain <fthain@telegraphics.com.au> | 2014-11-12 16:12:14 +1100 |
---|---|---|
committer | Christoph Hellwig <hch@lst.de> | 2014-11-20 09:11:16 +0100 |
commit | ef1081cbf05b22d3d0e05b267a5559a8cd8e8d4a (patch) | |
tree | 327b642eab6b4d83d5cc268e78a1fb62bfa097ff /drivers/scsi/atari_NCR5380.c | |
parent | f527590278f1b823ba979a234241d09ed2c436b4 (diff) |
atari_NCR5380: Refactor Falcon special cases
Make the atari_NCR5380.c core driver usable by sun3_scsi, mac_scsi and
others by moving some of the Falcon-specific code out of the core driver:
!IS_A_TT, atari_read_overruns and falcon_dont_release. Replace these with
hostdata variables and flags. FLAG_CHECK_LAST_BYTE_SENT is unused in
atari_NCR5380.c so don't set it.
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>
Diffstat (limited to 'drivers/scsi/atari_NCR5380.c')
-rw-r--r-- | drivers/scsi/atari_NCR5380.c | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/drivers/scsi/atari_NCR5380.c b/drivers/scsi/atari_NCR5380.c index 75d34031c280..371ca14f08ea 100644 --- a/drivers/scsi/atari_NCR5380.c +++ b/drivers/scsi/atari_NCR5380.c @@ -839,7 +839,7 @@ static int __init NCR5380_init(struct Scsi_Host *instance, int flags) hostdata->connected = NULL; hostdata->issue_queue = NULL; hostdata->disconnected_queue = NULL; - hostdata->flags = FLAG_CHECK_LAST_BYTE_SENT; + hostdata->flags = flags; if (!the_template) { the_template = instance->hostt; @@ -1054,7 +1054,7 @@ static void NCR5380_main(struct work_struct *work) hostdata->issue_queue = NEXT(tmp); } SET_NEXT(tmp, NULL); - falcon_dont_release++; + hostdata->retain_dma_intr++; /* reenable interrupts after finding one */ local_irq_restore(flags); @@ -1082,7 +1082,7 @@ static void NCR5380_main(struct work_struct *work) cmd_get_tag(tmp, tmp->cmnd[0] != REQUEST_SENSE); #endif if (!NCR5380_select(instance, tmp)) { - falcon_dont_release--; + hostdata->retain_dma_intr--; /* release if target did not response! */ falcon_release_lock_if_possible(hostdata); break; @@ -1094,7 +1094,7 @@ static void NCR5380_main(struct work_struct *work) #ifdef SUPPORT_TAGS cmd_free_tag(tmp); #endif - falcon_dont_release--; + hostdata->retain_dma_intr--; local_irq_restore(flags); dprintk(NDEBUG_MAIN, "scsi%d: main(): select() failed, " "returned to issue_queue\n", HOSTNO); @@ -1151,7 +1151,7 @@ static void NCR5380_dma_complete(struct Scsi_Host *instance) return; } - if (atari_read_overruns) { + if (hostdata->read_overruns) { p = hostdata->connected->SCp.phase; if (p & SR_IO) { udelay(10); @@ -1181,9 +1181,9 @@ static void NCR5380_dma_complete(struct Scsi_Host *instance) *data += transfered; *count -= transfered; - if (atari_read_overruns) { + if (hostdata->read_overruns) { if ((NCR5380_read(STATUS_REG) & PHASE_MASK) == p && (p & SR_IO)) { - cnt = toPIO = atari_read_overruns; + cnt = toPIO = hostdata->read_overruns; if (overrun) { dprintk(NDEBUG_DMA, "Got an input overrun, using saved byte\n"); *(*data)++ = saved_data; @@ -1838,8 +1838,8 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance, return -1; } - if (atari_read_overruns && (p & SR_IO)) - c -= atari_read_overruns; + if (hostdata->read_overruns && (p & SR_IO)) + c -= hostdata->read_overruns; dprintk(NDEBUG_DMA, "scsi%d: initializing DMA for %s, %d bytes %s %p\n", HOSTNO, (p & SR_IO) ? "reading" : "writing", @@ -1851,7 +1851,7 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance, NCR5380_write(MODE_REG, MR_BASE | MR_DMA_MODE | MR_ENABLE_EOP_INTR | MR_MONITOR_BSY); #endif /* def REAL_DMA */ - if (IS_A_TT()) { + if (!(hostdata->flags & FLAG_LATE_DMA_SETUP)) { /* On the Medusa, it is a must to initialize the DMA before * starting the NCR. This is also the cleaner way for the TT. */ @@ -1869,7 +1869,7 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance, NCR5380_write(START_DMA_SEND_REG, 0); } - if (!IS_A_TT()) { + if (hostdata->flags & FLAG_LATE_DMA_SETUP) { /* On the Falcon, the DMA setup must be done after the last */ /* NCR access, else the DMA setup gets trashed! */ @@ -2084,7 +2084,7 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance) /* Accept message by clearing ACK */ NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE); /* ++guenther: possible race with Falcon locking */ - falcon_dont_release++; + hostdata->retain_dma_intr++; hostdata->connected = NULL; dprintk(NDEBUG_QUEUES, "scsi%d: command for target %d, lun %llu " "completed\n", HOSTNO, cmd->device->id, cmd->device->lun); @@ -2167,7 +2167,7 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance) while ((NCR5380_read(STATUS_REG) & SR_BSY) && !hostdata->connected) barrier(); - falcon_dont_release--; + hostdata->retain_dma_intr--; /* ++roman: For Falcon SCSI, release the lock on the * ST-DMA here if no other commands are waiting on the * disconnected queue. @@ -2474,7 +2474,7 @@ static void NCR5380_reselect(struct Scsi_Host *instance) #endif ) { /* ++guenther: prevent race with falcon_release_lock */ - falcon_dont_release++; + hostdata->retain_dma_intr++; if (prev) { REMOVE(prev, NEXT(prev), tmp, NEXT(tmp)); SET_NEXT(prev, NEXT(tmp)); @@ -2512,7 +2512,7 @@ static void NCR5380_reselect(struct Scsi_Host *instance) hostdata->connected = tmp; dprintk(NDEBUG_RESELECTION, "scsi%d: nexus established, target = %d, lun = %llu, tag = %d\n", HOSTNO, tmp->device->id, tmp->device->lun, tmp->tag); - falcon_dont_release--; + hostdata->retain_dma_intr--; } |