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