1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * ip22-hpc.c: Routines for generic manipulation of the HPC controllers.
 4 *
 5 * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
 6 * Copyright (C) 1998 Ralf Baechle
 7 */
 8
 9#include <linux/export.h>
10#include <linux/init.h>
 
11#include <linux/types.h>
12
13#include <asm/io.h>
14#include <asm/sgi/hpc3.h>
15#include <asm/sgi/ioc.h>
16#include <asm/sgi/ip22.h>
17
18struct hpc3_regs *hpc3c0, *hpc3c1;
19
20EXPORT_SYMBOL(hpc3c0);
21EXPORT_SYMBOL(hpc3c1);
22
23struct sgioc_regs *sgioc;
24
25EXPORT_SYMBOL(sgioc);
26
27/* We need software copies of these because they are write only. */
28u8 sgi_ioc_reset, sgi_ioc_write;
29
30extern char *system_type;
31
32void __init sgihpc_init(void)
33{
34	/* ioremap can't fail */
35	hpc3c0 = (struct hpc3_regs *)
36		 ioremap(HPC3_CHIP0_BASE, sizeof(struct hpc3_regs));
37	hpc3c1 = (struct hpc3_regs *)
38		 ioremap(HPC3_CHIP1_BASE, sizeof(struct hpc3_regs));
39	/* IOC lives in PBUS PIO channel 6 */
40	sgioc = (struct sgioc_regs *)hpc3c0->pbus_extregs[6];
41
42	hpc3c0->pbus_piocfg[6][0] |= HPC3_PIOCFG_DS16;
43	if (ip22_is_fullhouse()) {
44		/* Full House comes with INT2 which lives in PBUS PIO
45		 * channel 4 */
46		sgint = (struct sgint_regs *)hpc3c0->pbus_extregs[4];
47		system_type = "SGI Indigo2";
48	} else {
49		/* Guiness comes with INT3 which is part of IOC */
50		sgint = &sgioc->int3;
51		system_type = "SGI Indy";
52	}
53
54	sgi_ioc_reset = (SGIOC_RESET_PPORT | SGIOC_RESET_KBDMOUSE |
55			 SGIOC_RESET_EISA | SGIOC_RESET_ISDN |
56			 SGIOC_RESET_LC0OFF);
57
58	sgi_ioc_write = (SGIOC_WRITE_EASEL | SGIOC_WRITE_NTHRESH |
59			 SGIOC_WRITE_TPSPEED | SGIOC_WRITE_EPSEL |
60			 SGIOC_WRITE_U0AMODE | SGIOC_WRITE_U1AMODE);
61
62	sgioc->reset = sgi_ioc_reset;
63	sgioc->write = sgi_ioc_write;
64}

 
 1/*
 2 * ip22-hpc.c: Routines for generic manipulation of the HPC controllers.
 3 *
 4 * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
 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	}
52
53	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}