1 /* 2 * ip22-hpc.c: Routines for generic manipulation of the HPC controllers. 3 * 4 * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com) 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 17 struct hpc3_regs *hpc3c0, *hpc3c1; 18 19 EXPORT_SYMBOL(hpc3c0); 20 EXPORT_SYMBOL(hpc3c1); 21 22 struct sgioc_regs *sgioc; 23 24 EXPORT_SYMBOL(sgioc); 25 26 /* We need software copies of these because they are write only. */ 27 u8 sgi_ioc_reset, sgi_ioc_write; 28 29 extern char *system_type; 30 sgihpc_init(void)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 } 64