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>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/scsi/NCR5380.h b/drivers/scsi/NCR5380.h
index 11257784b2d7..7b1a0913d94c 100644
--- a/drivers/scsi/NCR5380.h
+++ b/drivers/scsi/NCR5380.h
@@ -241,6 +241,7 @@
 #define FLAG_NCR53C400                  4       /* NCR53c400 */
 #define FLAG_NO_PSEUDO_DMA              8       /* Inhibit DMA */
 #define FLAG_DTC3181E                   16      /* DTC3181E */
+#define FLAG_LATE_DMA_SETUP             32      /* Setup NCR before DMA H/W */
 
 #ifndef ASM
 struct NCR5380_hostdata {
@@ -269,6 +270,9 @@ struct NCR5380_hostdata {
         struct delayed_work coroutine;          /* our co-routine */
         struct scsi_eh_save ses;
         char info[256];
+        int read_overruns;                /* number of bytes to cut from a
+                                           * transfer to handle chip overruns */
+        int retain_dma_intr;
 #ifdef PSEUDO_DMA
         unsigned spin_max_r;
         unsigned spin_max_w;