mirror of https://gitee.com/openkylin/linux.git
65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* ip22-hpc.c: Routines for generic manipulation of the HPC controllers.
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*
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* Copyright (C) 1996 David S. Miller (davem@davemloft.net)
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* Copyright (C) 1998 Ralf Baechle
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*/
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#include <linux/export.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <asm/io.h>
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#include <asm/sgi/hpc3.h>
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#include <asm/sgi/ioc.h>
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#include <asm/sgi/ip22.h>
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struct hpc3_regs *hpc3c0, *hpc3c1;
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EXPORT_SYMBOL(hpc3c0);
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EXPORT_SYMBOL(hpc3c1);
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struct sgioc_regs *sgioc;
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EXPORT_SYMBOL(sgioc);
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/* We need software copies of these because they are write only. */
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u8 sgi_ioc_reset, sgi_ioc_write;
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extern char *system_type;
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void __init sgihpc_init(void)
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{
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/* ioremap can't fail */
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hpc3c0 = (struct hpc3_regs *)
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ioremap(HPC3_CHIP0_BASE, sizeof(struct hpc3_regs));
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hpc3c1 = (struct hpc3_regs *)
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ioremap(HPC3_CHIP1_BASE, sizeof(struct hpc3_regs));
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/* IOC lives in PBUS PIO channel 6 */
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sgioc = (struct sgioc_regs *)hpc3c0->pbus_extregs[6];
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hpc3c0->pbus_piocfg[6][0] |= HPC3_PIOCFG_DS16;
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if (ip22_is_fullhouse()) {
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/* Full House comes with INT2 which lives in PBUS PIO
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* channel 4 */
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sgint = (struct sgint_regs *)hpc3c0->pbus_extregs[4];
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system_type = "SGI Indigo2";
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} else {
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/* Guiness comes with INT3 which is part of IOC */
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sgint = &sgioc->int3;
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system_type = "SGI Indy";
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}
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sgi_ioc_reset = (SGIOC_RESET_PPORT | SGIOC_RESET_KBDMOUSE |
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SGIOC_RESET_EISA | SGIOC_RESET_ISDN |
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SGIOC_RESET_LC0OFF);
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sgi_ioc_write = (SGIOC_WRITE_EASEL | SGIOC_WRITE_NTHRESH |
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SGIOC_WRITE_TPSPEED | SGIOC_WRITE_EPSEL |
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SGIOC_WRITE_U0AMODE | SGIOC_WRITE_U1AMODE);
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sgioc->reset = sgi_ioc_reset;
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sgioc->write = sgi_ioc_write;
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}
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