forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
64 lines
1.6 KiB
64 lines
1.6 KiB
// SPDX-License-Identifier: GPL-2.0 |
|
/* |
|
* ip22-hpc.c: Routines for generic manipulation of the HPC controllers. |
|
* |
|
* Copyright (C) 1996 David S. Miller ([email protected]) |
|
* Copyright (C) 1998 Ralf Baechle |
|
*/ |
|
|
|
#include <linux/export.h> |
|
#include <linux/init.h> |
|
#include <linux/types.h> |
|
|
|
#include <asm/io.h> |
|
#include <asm/sgi/hpc3.h> |
|
#include <asm/sgi/ioc.h> |
|
#include <asm/sgi/ip22.h> |
|
|
|
struct hpc3_regs *hpc3c0, *hpc3c1; |
|
|
|
EXPORT_SYMBOL(hpc3c0); |
|
EXPORT_SYMBOL(hpc3c1); |
|
|
|
struct sgioc_regs *sgioc; |
|
|
|
EXPORT_SYMBOL(sgioc); |
|
|
|
/* We need software copies of these because they are write only. */ |
|
u8 sgi_ioc_reset, sgi_ioc_write; |
|
|
|
extern char *system_type; |
|
|
|
void __init sgihpc_init(void) |
|
{ |
|
/* ioremap can't fail */ |
|
hpc3c0 = (struct hpc3_regs *) |
|
ioremap(HPC3_CHIP0_BASE, sizeof(struct hpc3_regs)); |
|
hpc3c1 = (struct hpc3_regs *) |
|
ioremap(HPC3_CHIP1_BASE, sizeof(struct hpc3_regs)); |
|
/* IOC lives in PBUS PIO channel 6 */ |
|
sgioc = (struct sgioc_regs *)hpc3c0->pbus_extregs[6]; |
|
|
|
hpc3c0->pbus_piocfg[6][0] |= HPC3_PIOCFG_DS16; |
|
if (ip22_is_fullhouse()) { |
|
/* Full House comes with INT2 which lives in PBUS PIO |
|
* channel 4 */ |
|
sgint = (struct sgint_regs *)hpc3c0->pbus_extregs[4]; |
|
system_type = "SGI Indigo2"; |
|
} else { |
|
/* Guiness comes with INT3 which is part of IOC */ |
|
sgint = &sgioc->int3; |
|
system_type = "SGI Indy"; |
|
} |
|
|
|
sgi_ioc_reset = (SGIOC_RESET_PPORT | SGIOC_RESET_KBDMOUSE | |
|
SGIOC_RESET_EISA | SGIOC_RESET_ISDN | |
|
SGIOC_RESET_LC0OFF); |
|
|
|
sgi_ioc_write = (SGIOC_WRITE_EASEL | SGIOC_WRITE_NTHRESH | |
|
SGIOC_WRITE_TPSPEED | SGIOC_WRITE_EPSEL | |
|
SGIOC_WRITE_U0AMODE | SGIOC_WRITE_U1AMODE); |
|
|
|
sgioc->reset = sgi_ioc_reset; |
|
sgioc->write = sgi_ioc_write; |
|
}
|
|
|