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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 | ||
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9 | This driver supports NCR5380 and NCR53c400 and compatible cards in port or |
10 | memory mapped modes. | |
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12 | Use of an interrupt is recommended, if supported by the board, as this will |
13 | allow targets to disconnect and thereby improve SCSI bus utilization. | |
14 | ||
15 | If the irq parameter is 254 or is omitted entirely, the driver will probe | |
16 | for the correct IRQ line automatically. If the irq parameter is 0 or 255 | |
17 | then no IRQ will be used. | |
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18 | |
19 | The NCR53c400 does not support DMA but it does have Pseudo-DMA which is | |
20 | supported by the driver. | |
21 | ||
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22 | This driver provides some information on what it has detected in |
23 | /proc/scsi/g_NCR5380/x where x is the scsi card number as detected at boot | |
24 | time. More info to come in the future. | |
25 | ||
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26 | This driver works as a module. |
27 | When included as a module, parameters can be passed on the insmod/modprobe | |
28 | command line: | |
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29 | irq=xx[,...] the interrupt(s) |
30 | base=xx[,...] the port or base address(es) (for port or memory mapped, resp.) | |
31 | card=xx[,...] card type(s): | |
32 | 0 = NCR5380, | |
33 | 1 = NCR53C400, | |
34 | 2 = NCR53C400A, | |
35 | 3 = Domex Technology Corp 3181E (DTC3181E) | |
36 | 4 = Hewlett Packard C2502 | |
37 | ||
38 | These old-style parameters can support only one card: | |
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39 | ncr_irq=xx the interrupt |
40 | ncr_addr=xx the port or base address (for port or memory | |
41 | mapped, resp.) | |
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42 | ncr_5380=1 to set up for a NCR5380 board |
43 | ncr_53c400=1 to set up for a NCR53C400 board | |
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44 | ncr_53c400a=1 to set up for a NCR53C400A board |
45 | dtc_3181e=1 to set up for a Domex Technology Corp 3181E board | |
46 | hp_c2502=1 to set up for a Hewlett Packard C2502 board | |
a8cfbcae | 47 | |
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48 | E.g. Trantor T130B in its default configuration: |
49 | modprobe g_NCR5380 irq=5 base=0x350 card=1 | |
50 | or alternatively, using the old syntax, | |
51 | modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_53c400=1 | |
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53 | E.g. a port mapped NCR5380 board, driver to probe for IRQ: |
54 | modprobe g_NCR5380 base=0x350 card=0 | |
55 | or alternatively, | |
56 | modprobe g_NCR5380 ncr_addr=0x350 ncr_5380=1 | |
1da177e4 | 57 | |
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58 | E.g. a memory mapped NCR53C400 board with no IRQ: |
59 | modprobe g_NCR5380 irq=255 base=0xc8000 card=1 | |
60 | or alternatively, | |
61 | modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1 | |
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63 | E.g. two cards, DTC3181 (in non-PnP mode) at 0x240 with no IRQ |
64 | and HP C2502 at 0x300 with IRQ 7: | |
65 | modprobe g_NCR5380 irq=0,7 base=0x240,0x300 card=3,4 | |
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66 | |
67 | Kevin Lentin | |
68 | K.Lentin@cs.monash.edu.au |