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1da177e4 LT |
1 | README file for the Linux g_NCR5380 driver. |
2 | ||
3 | (c) 1993 Drew Eckhard | |
4 | NCR53c400 extensions (c) 1994,1995,1996 Kevin Lentin | |
5 | ||
6 | This file documents the NCR53c400 extensions by Kevin Lentin and some | |
7 | enhancements to the NCR5380 core. | |
8 | ||
9 | This driver supports both NCR5380 and NCR53c400 cards in port or memory | |
10 | mapped modes. Currently this driver can only support one of those mapping | |
11 | modes at a time but it does support both of these chips at the same time. | |
12 | The next release of this driver will support port & memory mapped cards at | |
13 | the same time. It should be able to handle multiple different cards in the | |
14 | same machine. | |
15 | ||
16 | The drivers/scsi/Makefile has an override in it for the most common | |
17 | NCR53c400 card, the Trantor T130B in its default configuration: | |
18 | Port: 0x350 | |
19 | IRQ : 5 | |
20 | ||
21 | The NCR53c400 does not support DMA but it does have Pseudo-DMA which is | |
22 | supported by the driver. | |
23 | ||
24 | If the default configuration does not work for you, you can use the kernel | |
25 | command lines (eg using the lilo append command): | |
9c41ab27 FT |
26 | ncr5380=addr,irq |
27 | ncr53c400=addr,irq | |
28 | ncr53c400a=addr,irq | |
29 | dtc3181e=addr,irq | |
1da177e4 LT |
30 | |
31 | The driver does not probe for any addresses or ports other than those in | |
32 | the OVERRIDE or given to the kernel as above. | |
33 | ||
34 | This driver provides some information on what it has detected in | |
35 | /proc/scsi/g_NCR5380/x where x is the scsi card number as detected at boot | |
36 | time. More info to come in the future. | |
37 | ||
1da177e4 LT |
38 | This driver works as a module. |
39 | When included as a module, parameters can be passed on the insmod/modprobe | |
40 | command line: | |
41 | ncr_irq=xx the interrupt | |
42 | ncr_addr=xx the port or base address (for port or memory | |
43 | mapped, resp.) | |
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44 | ncr_5380=1 to set up for a NCR5380 board |
45 | ncr_53c400=1 to set up for a NCR53C400 board | |
9c41ab27 FT |
46 | ncr_53c400a=1 to set up for a NCR53C400A board |
47 | dtc_3181e=1 to set up for a Domex Technology Corp 3181E board | |
48 | hp_c2502=1 to set up for a Hewlett Packard C2502 board | |
1da177e4 LT |
49 | e.g. |
50 | modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_5380=1 | |
51 | for a port mapped NCR5380 board or | |
52 | modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1 | |
53 | for a memory mapped NCR53C400 board with interrupts disabled. | |
54 | ||
55 | (255 should be specified for no or DMA interrupt, 254 to autoprobe for an | |
56 | IRQ line if overridden on the command line.) | |
57 | ||
58 | ||
59 | Kevin Lentin | |
60 | K.Lentin@cs.monash.edu.au |