94 lines
2.9 KiB
ReStructuredText
94 lines
2.9 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0
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.. include:: <isonum.txt>
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================
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g_NCR5380 driver
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================
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Copyright |copy| 1993 Drew Eckhard
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NCR53c400 extensions Copyright |copy| 1994,1995,1996 Kevin Lentin
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This file documents the NCR53c400 extensions by Kevin Lentin and some
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enhancements to the NCR5380 core.
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This driver supports NCR5380 and NCR53c400 and compatible cards in port or
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memory mapped modes.
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Use of an interrupt is recommended, if supported by the board, as this will
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allow targets to disconnect and thereby improve SCSI bus utilization.
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If the irq parameter is 254 or is omitted entirely, the driver will probe
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for the correct IRQ line automatically. If the irq parameter is 0 or 255
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then no IRQ will be used.
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The NCR53c400 does not support DMA but it does have Pseudo-DMA which is
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supported by the driver.
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This driver provides some information on what it has detected in
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/proc/scsi/g_NCR5380/x where x is the scsi card number as detected at boot
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time. More info to come in the future.
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This driver works as a module.
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When included as a module, parameters can be passed on the insmod/modprobe
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command line:
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============= ===============================================================
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irq=xx[,...] the interrupt(s)
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base=xx[,...] the port or base address(es) (for port or memory mapped, resp.)
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card=xx[,...] card type(s):
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== ======================================
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0 NCR5380,
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1 NCR53C400,
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2 NCR53C400A,
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3 Domex Technology Corp 3181E (DTC3181E)
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4 Hewlett Packard C2502
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== ======================================
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============= ===============================================================
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These old-style parameters can support only one card:
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============= =================================================
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ncr_irq=xx the interrupt
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ncr_addr=xx the port or base address (for port or memory
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mapped, resp.)
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ncr_5380=1 to set up for a NCR5380 board
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ncr_53c400=1 to set up for a NCR53C400 board
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ncr_53c400a=1 to set up for a NCR53C400A board
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dtc_3181e=1 to set up for a Domex Technology Corp 3181E board
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hp_c2502=1 to set up for a Hewlett Packard C2502 board
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============= =================================================
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E.g. Trantor T130B in its default configuration::
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modprobe g_NCR5380 irq=5 base=0x350 card=1
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or alternatively, using the old syntax::
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modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_53c400=1
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E.g. a port mapped NCR5380 board, driver to probe for IRQ::
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modprobe g_NCR5380 base=0x350 card=0
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or alternatively::
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modprobe g_NCR5380 ncr_addr=0x350 ncr_5380=1
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E.g. a memory mapped NCR53C400 board with no IRQ::
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modprobe g_NCR5380 irq=255 base=0xc8000 card=1
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or alternatively::
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modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1
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E.g. two cards, DTC3181 (in non-PnP mode) at 0x240 with no IRQ
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and HP C2502 at 0x300 with IRQ 7::
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modprobe g_NCR5380 irq=0,7 base=0x240,0x300 card=3,4
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Kevin Lentin
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K.Lentin@cs.monash.edu.au
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