1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * ip22-hpc.c: Routines for generic manipulation of the HPC controllers. 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 1996 David S. Miller (davem@davemloft.net) 6*4882a593Smuzhiyun * Copyright (C) 1998 Ralf Baechle 7*4882a593Smuzhiyun */ 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #include <linux/export.h> 10*4882a593Smuzhiyun #include <linux/init.h> 11*4882a593Smuzhiyun #include <linux/types.h> 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #include <asm/io.h> 14*4882a593Smuzhiyun #include <asm/sgi/hpc3.h> 15*4882a593Smuzhiyun #include <asm/sgi/ioc.h> 16*4882a593Smuzhiyun #include <asm/sgi/ip22.h> 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun struct hpc3_regs *hpc3c0, *hpc3c1; 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun EXPORT_SYMBOL(hpc3c0); 21*4882a593Smuzhiyun EXPORT_SYMBOL(hpc3c1); 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun struct sgioc_regs *sgioc; 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun EXPORT_SYMBOL(sgioc); 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun /* We need software copies of these because they are write only. */ 28*4882a593Smuzhiyun u8 sgi_ioc_reset, sgi_ioc_write; 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun extern char *system_type; 31*4882a593Smuzhiyun sgihpc_init(void)32*4882a593Smuzhiyunvoid __init sgihpc_init(void) 33*4882a593Smuzhiyun { 34*4882a593Smuzhiyun /* ioremap can't fail */ 35*4882a593Smuzhiyun hpc3c0 = (struct hpc3_regs *) 36*4882a593Smuzhiyun ioremap(HPC3_CHIP0_BASE, sizeof(struct hpc3_regs)); 37*4882a593Smuzhiyun hpc3c1 = (struct hpc3_regs *) 38*4882a593Smuzhiyun ioremap(HPC3_CHIP1_BASE, sizeof(struct hpc3_regs)); 39*4882a593Smuzhiyun /* IOC lives in PBUS PIO channel 6 */ 40*4882a593Smuzhiyun sgioc = (struct sgioc_regs *)hpc3c0->pbus_extregs[6]; 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun hpc3c0->pbus_piocfg[6][0] |= HPC3_PIOCFG_DS16; 43*4882a593Smuzhiyun if (ip22_is_fullhouse()) { 44*4882a593Smuzhiyun /* Full House comes with INT2 which lives in PBUS PIO 45*4882a593Smuzhiyun * channel 4 */ 46*4882a593Smuzhiyun sgint = (struct sgint_regs *)hpc3c0->pbus_extregs[4]; 47*4882a593Smuzhiyun system_type = "SGI Indigo2"; 48*4882a593Smuzhiyun } else { 49*4882a593Smuzhiyun /* Guiness comes with INT3 which is part of IOC */ 50*4882a593Smuzhiyun sgint = &sgioc->int3; 51*4882a593Smuzhiyun system_type = "SGI Indy"; 52*4882a593Smuzhiyun } 53*4882a593Smuzhiyun 54*4882a593Smuzhiyun sgi_ioc_reset = (SGIOC_RESET_PPORT | SGIOC_RESET_KBDMOUSE | 55*4882a593Smuzhiyun SGIOC_RESET_EISA | SGIOC_RESET_ISDN | 56*4882a593Smuzhiyun SGIOC_RESET_LC0OFF); 57*4882a593Smuzhiyun 58*4882a593Smuzhiyun sgi_ioc_write = (SGIOC_WRITE_EASEL | SGIOC_WRITE_NTHRESH | 59*4882a593Smuzhiyun SGIOC_WRITE_TPSPEED | SGIOC_WRITE_EPSEL | 60*4882a593Smuzhiyun SGIOC_WRITE_U0AMODE | SGIOC_WRITE_U1AMODE); 61*4882a593Smuzhiyun 62*4882a593Smuzhiyun sgioc->reset = sgi_ioc_reset; 63*4882a593Smuzhiyun sgioc->write = sgi_ioc_write; 64*4882a593Smuzhiyun } 65