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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): | ||
26 | ncr5380=port,irq,dma | ||
27 | ncr53c400=port,irq | ||
28 | or | ||
29 | ncr5380=base,irq,dma | ||
30 | ncr53c400=base,irq | ||
31 | |||
32 | The driver does not probe for any addresses or ports other than those in | ||
33 | the OVERRIDE or given to the kernel as above. | ||
34 | |||
35 | This driver provides some information on what it has detected in | ||
36 | /proc/scsi/g_NCR5380/x where x is the scsi card number as detected at boot | ||
37 | time. More info to come in the future. | ||
38 | |||
39 | When NCR53c400 support is compiled in, BIOS parameters will be returned by | ||
40 | the driver (the raw 5380 driver does not and I don't plan to fiddle with | ||
41 | it!). | ||
42 | |||
43 | This driver works as a module. | ||
44 | When included as a module, parameters can be passed on the insmod/modprobe | ||
45 | command line: | ||
46 | ncr_irq=xx the interrupt | ||
47 | ncr_addr=xx the port or base address (for port or memory | ||
48 | mapped, resp.) | ||
49 | ncr_dma=xx the DMA | ||
50 | ncr_5380=1 to set up for a NCR5380 board | ||
51 | ncr_53c400=1 to set up for a NCR53C400 board | ||
52 | e.g. | ||
53 | modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_5380=1 | ||
54 | for a port mapped NCR5380 board or | ||
55 | modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1 | ||
56 | for a memory mapped NCR53C400 board with interrupts disabled. | ||
57 | |||
58 | (255 should be specified for no or DMA interrupt, 254 to autoprobe for an | ||
59 | IRQ line if overridden on the command line.) | ||
60 | |||
61 | |||
62 | Kevin Lentin | ||
63 | K.Lentin@cs.monash.edu.au | ||