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// SPDX-License-Identifier: GPL-2.0
/*
* ip22-hpc.c: Routines for generic manipulation of the HPC controllers.
*
* Copyright (C) 1996 David S. Miller (davem@davemloft.net)
* 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;
}
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