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Diffstat (limited to 'Documentation/scsi/g_NCR5380.txt')
| -rw-r--r-- | Documentation/scsi/g_NCR5380.txt | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/Documentation/scsi/g_NCR5380.txt b/Documentation/scsi/g_NCR5380.txt new file mode 100644 index 000000000000..3b80f567f818 --- /dev/null +++ b/Documentation/scsi/g_NCR5380.txt @@ -0,0 +1,63 @@ +README file for the Linux g_NCR5380 driver. + +(c) 1993 Drew Eckhard +NCR53c400 extensions (c) 1994,1995,1996 Kevin Lentin + +This file documents the NCR53c400 extensions by Kevin Lentin and some +enhancements to the NCR5380 core. + +This driver supports both NCR5380 and NCR53c400 cards in port or memory +mapped modes. Currently this driver can only support one of those mapping +modes at a time but it does support both of these chips at the same time. +The next release of this driver will support port & memory mapped cards at +the same time. It should be able to handle multiple different cards in the +same machine. + +The drivers/scsi/Makefile has an override in it for the most common +NCR53c400 card, the Trantor T130B in its default configuration: + Port: 0x350 + IRQ : 5 + +The NCR53c400 does not support DMA but it does have Pseudo-DMA which is +supported by the driver. + +If the default configuration does not work for you, you can use the kernel +command lines (eg using the lilo append command): + ncr5380=port,irq,dma + ncr53c400=port,irq +or + ncr5380=base,irq,dma + ncr53c400=base,irq + +The driver does not probe for any addresses or ports other than those in +the OVERRIDE or given to the kernel as above. + +This driver provides some information on what it has detected in +/proc/scsi/g_NCR5380/x where x is the scsi card number as detected at boot +time. More info to come in the future. + +When NCR53c400 support is compiled in, BIOS parameters will be returned by +the driver (the raw 5380 driver does not and I don't plan to fiddle with +it!). + +This driver works as a module. +When included as a module, parameters can be passed on the insmod/modprobe +command line: + ncr_irq=xx the interrupt + ncr_addr=xx the port or base address (for port or memory + mapped, resp.) + ncr_dma=xx the DMA + ncr_5380=1 to set up for a NCR5380 board + ncr_53c400=1 to set up for a NCR53C400 board +e.g. +modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_5380=1 + for a port mapped NCR5380 board or +modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1 + for a memory mapped NCR53C400 board with interrupts disabled. + +(255 should be specified for no or DMA interrupt, 254 to autoprobe for an + IRQ line if overridden on the command line.) + + +Kevin Lentin +K.Lentin@cs.monash.edu.au |