blob: 5c00cdd20d8e05196f421cec71a109de63e0d399 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * ip22-hpc.c: Routines for generic manipulation of the HPC controllers.
3 *
4 * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
5 * Copyright (C) 1998 Ralf Baechle
6 */
7
8#include <linux/init.h>
9#include <linux/module.h>
10#include <linux/types.h>
11
12#include <asm/io.h>
13#include <asm/sgi/hpc3.h>
14#include <asm/sgi/ioc.h>
15#include <asm/sgi/ip22.h>
16
17struct hpc3_regs *hpc3c0, *hpc3c1;
18
19EXPORT_SYMBOL(hpc3c0);
20EXPORT_SYMBOL(hpc3c1);
21
22struct sgioc_regs *sgioc;
23
24EXPORT_SYMBOL(sgioc);
25
26/* We need software copies of these because they are write only. */
27u8 sgi_ioc_reset, sgi_ioc_write;
28
29extern char *system_type;
30
31void __init sgihpc_init(void)
32{
33 /* ioremap can't fail */
34 hpc3c0 = (struct hpc3_regs *)
35 ioremap(HPC3_CHIP0_BASE, sizeof(struct hpc3_regs));
36 hpc3c1 = (struct hpc3_regs *)
37 ioremap(HPC3_CHIP1_BASE, sizeof(struct hpc3_regs));
38 /* IOC lives in PBUS PIO channel 6 */
39 sgioc = (struct sgioc_regs *)hpc3c0->pbus_extregs[6];
40
41 hpc3c0->pbus_piocfg[6][0] |= HPC3_PIOCFG_DS16;
42 if (ip22_is_fullhouse()) {
43 /* Full House comes with INT2 which lives in PBUS PIO
44 * channel 4 */
45 sgint = (struct sgint_regs *)hpc3c0->pbus_extregs[4];
46 system_type = "SGI Indigo2";
47 } else {
48 /* Guiness comes with INT3 which is part of IOC */
49 sgint = &sgioc->int3;
50 system_type = "SGI Indy";
51 }
Ralf Baechle42a3b4f2005-09-03 15:56:17 -070052
Linus Torvalds1da177e2005-04-16 15:20:36 -070053 sgi_ioc_reset = (SGIOC_RESET_PPORT | SGIOC_RESET_KBDMOUSE |
54 SGIOC_RESET_EISA | SGIOC_RESET_ISDN |
55 SGIOC_RESET_LC0OFF);
56
57 sgi_ioc_write = (SGIOC_WRITE_EASEL | SGIOC_WRITE_NTHRESH |
58 SGIOC_WRITE_TPSPEED | SGIOC_WRITE_EPSEL |
59 SGIOC_WRITE_U0AMODE | SGIOC_WRITE_U1AMODE);
60
61 sgioc->reset = sgi_ioc_reset;
62 sgioc->write = sgi_ioc_write;
63}