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1 | .. SPDX-License-Identifier: GPL-2.0 |
2 | .. include:: <isonum.txt> | |
3 | ||
4 | ========================================== | |
5 | README file for the Linux g_NCR5380 driver | |
6 | ========================================== | |
7 | ||
8 | Copyright |copy| 1993 Drew Eckhard | |
9 | ||
10 | NCR53c400 extensions Copyright |copy| 1994,1995,1996 Kevin Lentin | |
11 | ||
12 | This file documents the NCR53c400 extensions by Kevin Lentin and some | |
13 | enhancements to the NCR5380 core. | |
14 | ||
15 | This driver supports NCR5380 and NCR53c400 and compatible cards in port or | |
16 | memory mapped modes. | |
17 | ||
18 | Use of an interrupt is recommended, if supported by the board, as this will | |
19 | allow targets to disconnect and thereby improve SCSI bus utilization. | |
20 | ||
21 | If the irq parameter is 254 or is omitted entirely, the driver will probe | |
22 | for the correct IRQ line automatically. If the irq parameter is 0 or 255 | |
23 | then no IRQ will be used. | |
24 | ||
25 | The NCR53c400 does not support DMA but it does have Pseudo-DMA which is | |
26 | supported by the driver. | |
27 | ||
28 | This driver provides some information on what it has detected in | |
29 | /proc/scsi/g_NCR5380/x where x is the scsi card number as detected at boot | |
30 | time. More info to come in the future. | |
31 | ||
32 | This driver works as a module. | |
33 | When included as a module, parameters can be passed on the insmod/modprobe | |
34 | command line: | |
35 | ||
36 | ============= =============================================================== | |
37 | irq=xx[,...] the interrupt(s) | |
38 | base=xx[,...] the port or base address(es) (for port or memory mapped, resp.) | |
39 | card=xx[,...] card type(s): | |
40 | ||
41 | == ====================================== | |
42 | 0 NCR5380, | |
43 | 1 NCR53C400, | |
44 | 2 NCR53C400A, | |
45 | 3 Domex Technology Corp 3181E (DTC3181E) | |
46 | 4 Hewlett Packard C2502 | |
47 | == ====================================== | |
48 | ============= =============================================================== | |
49 | ||
50 | These old-style parameters can support only one card: | |
51 | ||
52 | ============= ================================================= | |
53 | ncr_irq=xx the interrupt | |
54 | ncr_addr=xx the port or base address (for port or memory | |
55 | mapped, resp.) | |
56 | ncr_5380=1 to set up for a NCR5380 board | |
57 | ncr_53c400=1 to set up for a NCR53C400 board | |
58 | ncr_53c400a=1 to set up for a NCR53C400A board | |
59 | dtc_3181e=1 to set up for a Domex Technology Corp 3181E board | |
60 | hp_c2502=1 to set up for a Hewlett Packard C2502 board | |
61 | ============= ================================================= | |
62 | ||
63 | E.g. Trantor T130B in its default configuration:: | |
64 | ||
65 | modprobe g_NCR5380 irq=5 base=0x350 card=1 | |
66 | ||
67 | or alternatively, using the old syntax:: | |
68 | ||
69 | modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_53c400=1 | |
70 | ||
71 | E.g. a port mapped NCR5380 board, driver to probe for IRQ:: | |
72 | ||
73 | modprobe g_NCR5380 base=0x350 card=0 | |
74 | ||
75 | or alternatively:: | |
76 | ||
77 | modprobe g_NCR5380 ncr_addr=0x350 ncr_5380=1 | |
78 | ||
79 | E.g. a memory mapped NCR53C400 board with no IRQ:: | |
80 | ||
81 | modprobe g_NCR5380 irq=255 base=0xc8000 card=1 | |
82 | ||
83 | or alternatively:: | |
84 | ||
85 | modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1 | |
86 | ||
87 | E.g. two cards, DTC3181 (in non-PnP mode) at 0x240 with no IRQ | |
88 | and HP C2502 at 0x300 with IRQ 7:: | |
89 | ||
90 | modprobe g_NCR5380 irq=0,7 base=0x240,0x300 card=3,4 | |
91 | ||
92 | Kevin Lentin | |
93 | K.Lentin@cs.monash.edu.au |