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/types.h> 10 11 #include <asm/io.h> 12 #include <asm/sgi/hpc3.h> 13 #include <asm/sgi/ioc.h> 14 #include <asm/sgi/ip22.h> 15 16 struct hpc3_regs *hpc3c0, *hpc3c1; 17 struct sgioc_regs *sgioc; 18 19 /* We need software copies of these because they are write only. */ 20 u8 sgi_ioc_reset, sgi_ioc_write; 21 22 extern char *system_type; 23 sgihpc_init(void)24void __init sgihpc_init(void) 25 { 26 /* ioremap can't fail */ 27 hpc3c0 = (struct hpc3_regs *) 28 ioremap(HPC3_CHIP0_BASE, sizeof(struct hpc3_regs)); 29 hpc3c1 = (struct hpc3_regs *) 30 ioremap(HPC3_CHIP1_BASE, sizeof(struct hpc3_regs)); 31 /* IOC lives in PBUS PIO channel 6 */ 32 sgioc = (struct sgioc_regs *)hpc3c0->pbus_extregs[6]; 33 34 hpc3c0->pbus_piocfg[6][0] |= HPC3_PIOCFG_DS16; 35 if (ip22_is_fullhouse()) { 36 /* Full House comes with INT2 which lives in PBUS PIO 37 * channel 4 */ 38 sgint = (struct sgint_regs *)hpc3c0->pbus_extregs[4]; 39 system_type = "SGI Indigo2"; 40 } else { 41 /* Guiness comes with INT3 which is part of IOC */ 42 sgint = &sgioc->int3; 43 system_type = "SGI Indy"; 44 } 45 46 sgi_ioc_reset = (SGIOC_RESET_PPORT | SGIOC_RESET_KBDMOUSE | 47 SGIOC_RESET_EISA | SGIOC_RESET_ISDN | 48 SGIOC_RESET_LC0OFF); 49 50 sgi_ioc_write = (SGIOC_WRITE_EASEL | SGIOC_WRITE_NTHRESH | 51 SGIOC_WRITE_TPSPEED | SGIOC_WRITE_EPSEL | 52 SGIOC_WRITE_U0AMODE | SGIOC_WRITE_U1AMODE); 53 54 sgioc->reset = sgi_ioc_reset; 55 sgioc->write = sgi_ioc_write; 56 } 57