1README file for the Linux g_NCR5380 driver.
2
3(c) 1993 Drew Eckhard
4NCR53c400 extensions (c) 1994,1995,1996 Kevin Lentin
5
6This file documents the NCR53c400 extensions by Kevin Lentin and some
7enhancements to the NCR5380 core.
8
9This driver supports NCR5380 and NCR53c400 and compatible cards in port or
10memory mapped modes.
11
12Use of an interrupt is recommended, if supported by the board, as this will
13allow targets to disconnect and thereby improve SCSI bus utilization.
14
15If the irq parameter is 254 or is omitted entirely, the driver will probe
16for the correct IRQ line automatically. If the irq parameter is 0 or 255
17then no IRQ will be used.
18
19The NCR53c400 does not support DMA but it does have Pseudo-DMA which is
20supported by the driver.
21
22This driver provides some information on what it has detected in
23/proc/scsi/g_NCR5380/x where x is the scsi card number as detected at boot
24time. More info to come in the future.
25
26This driver works as a module.
27When included as a module, parameters can be passed on the insmod/modprobe
28command line:
29  irq=xx[,...]	the interrupt(s)
30  base=xx[,...]	the port or base address(es) (for port or memory mapped, resp.)
31  card=xx[,...]	card type(s):
32		0 = NCR5380,
33		1 = NCR53C400,
34		2 = NCR53C400A,
35		3 = Domex Technology Corp 3181E (DTC3181E)
36		4 = Hewlett Packard C2502
37
38These old-style parameters can support only one card:
39  ncr_irq=xx   the interrupt
40  ncr_addr=xx  the port or base address (for port or memory
41               mapped, resp.)
42  ncr_5380=1   to set up for a NCR5380 board
43  ncr_53c400=1 to set up for a NCR53C400 board
44  ncr_53c400a=1 to set up for a NCR53C400A board
45  dtc_3181e=1  to set up for a Domex Technology Corp 3181E board
46  hp_c2502=1   to set up for a Hewlett Packard C2502 board
47
48E.g. Trantor T130B in its default configuration:
49modprobe g_NCR5380 irq=5 base=0x350 card=1
50or alternatively, using the old syntax,
51modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_53c400=1
52
53E.g. a port mapped NCR5380 board, driver to probe for IRQ:
54modprobe g_NCR5380 base=0x350 card=0
55or alternatively,
56modprobe g_NCR5380 ncr_addr=0x350 ncr_5380=1
57
58E.g. a memory mapped NCR53C400 board with no IRQ:
59modprobe g_NCR5380 irq=255 base=0xc8000 card=1
60or alternatively,
61modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1
62
63E.g. two cards, DTC3181 (in non-PnP mode) at 0x240 with no IRQ
64and HP C2502 at 0x300 with IRQ 7:
65modprobe g_NCR5380 irq=0,7 base=0x240,0x300 card=3,4
66
67Kevin Lentin
68K.Lentin@cs.monash.edu.au
69