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* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
* ioc.h: Definitions for SGI I/O Controller
* Copyright (C) 1996 David S. Miller
* Copyright (C) 1997, 1998, 1999, 2000 Ralf Baechle
* Copyright (C) 2001, 2003 Ladislav Michl
#ifndef _SGI_IOC_H
#define _SGI_IOC_H
#include <linux/types.h>
#include <asm/sgi/pi1.h>
* All registers are 8-bit wide alligned on 32-bit boundary. Bad things
* happen if you try word access them. You have been warned.
struct sgioc_uart_regs {
u8 _ctrl1[3];
volatile u8 ctrl1;
u8 _data1[3];
volatile u8 data1;
u8 _ctrl2[3];
volatile u8 ctrl2;
u8 _data2[3];
volatile u8 data2;
struct sgioc_keyb_regs {
u8 _data[3];
volatile u8 data;
u8 _command[3];
volatile u8 command;
struct sgint_regs {
u8 _istat0[3];
volatile u8 istat0; /* Interrupt status zero */
#define SGINT_ISTAT0_FFULL 0x01
#define SGINT_ISTAT0_SCSI0 0x02
#define SGINT_ISTAT0_SCSI1 0x04
#define SGINT_ISTAT0_ENET 0x08
#define SGINT_ISTAT0_GFXDMA 0x10
#define SGINT_ISTAT0_PPORT 0x20
#define SGINT_ISTAT0_HPC2 0x40
#define SGINT_ISTAT0_LIO2 0x80
u8 _imask0[3];
volatile u8 imask0; /* Interrupt mask zero */
u8 _istat1[3];
volatile u8 istat1; /* Interrupt status one */
#define SGINT_ISTAT1_ISDNI 0x01
#define SGINT_ISTAT1_PWR 0x02
#define SGINT_ISTAT1_ISDNH 0x04
#define SGINT_ISTAT1_LIO3 0x08
#define SGINT_ISTAT1_HPC3 0x10
#define SGINT_ISTAT1_AFAIL 0x20
#define SGINT_ISTAT1_VIDEO 0x40
#define SGINT_ISTAT1_GIO2 0x80
u8 _imask1[3];
volatile u8 imask1; /* Interrupt mask one */
u8 _vmeistat[3];
volatile u8 vmeistat; /* VME interrupt status */
u8 _cmeimask0[3];
volatile u8 cmeimask0; /* VME interrupt mask zero */
u8 _cmeimask1[3];
volatile u8 cmeimask1; /* VME interrupt mask one */
u8 _cmepol[3];
volatile u8 cmepol; /* VME polarity */
u8 _tclear[3];
volatile u8 tclear;
u8 _errstat[3];
volatile u8 errstat; /* Error status reg, reserved on INT2 */
u32 _unused0[2];
u8 _tcnt0[3];
volatile u8 tcnt0; /* counter 0 */
u8 _tcnt1[3];
volatile u8 tcnt1; /* counter 1 */
u8 _tcnt2[3];
volatile u8 tcnt2; /* counter 2 */
u8 _tcword[3];
volatile u8 tcword; /* control word */
#define SGINT_TCWORD_BCD 0x01 /* Use BCD mode for counters */
#define SGINT_TCWORD_MMASK 0x0e /* Mode bitmask. */
#define SGINT_TCWORD_MITC 0x00 /* IRQ on terminal count (doesn't work) */
#define SGINT_TCWORD_MOS 0x02 /* One-shot IRQ mode. */
#define SGINT_TCWORD_MRGEN 0x04 /* Normal rate generation */
#define SGINT_TCWORD_MSWGEN 0x06 /* Square wave generator mode */
#define SGINT_TCWORD_MSWST 0x08 /* Software strobe */
#define SGINT_TCWORD_MHWST 0x0a /* Hardware strobe */
#define SGINT_TCWORD_CMASK 0x30 /* Command mask */
#define SGINT_TCWORD_CLAT 0x00 /* Latch command */
#define SGINT_TCWORD_CLSB 0x10 /* LSB read/write */
#define SGINT_TCWORD_CMSB 0x20 /* MSB read/write */
#define SGINT_TCWORD_CALL 0x30 /* Full counter read/write */
#define SGINT_TCWORD_CNT0 0x00 /* Select counter zero */
#define SGINT_TCWORD_CNT1 0x40 /* Select counter one */
#define SGINT_TCWORD_CNT2 0x80 /* Select counter two */
#define SGINT_TCWORD_CRBCK 0xc0 /* Readback command */
* The timer is the good old 8254. Unlike in PCs it's clocked at exactly 1MHz
#define SGINT_TIMER_CLOCK 1000000
* This is the constant we're using for calibrating the counter.
/* We need software copies of these because they are write only. */
extern u8 sgi_ioc_reset, sgi_ioc_write;
struct sgioc_regs {
struct pi1_regs pport;
u32 _unused0[2];
struct sgioc_uart_regs uart;
struct sgioc_keyb_regs kbdmouse;
u8 _gcsel[3];
volatile u8 gcsel;
u8 _genctrl[3];
volatile u8 genctrl;
u8 _panel[3];
volatile u8 panel;
u32 _unused1;
u8 _sysid[3];
volatile u8 sysid;
#define SGIOC_SYSID_BOARDREV(x) ((x & 0xe0) > 5)
#define SGIOC_SYSID_CHIPREV(x) ((x & 0x1e) > 1)
u32 _unused2;
u8 _read[3];
volatile u8 read;
u32 _unused3;
u8 _dmasel[3];
volatile u8 dmasel;
#define SGIOC_DMASEL_SCLK10MHZ 0x00 /* use 10MHZ serial clock */
#define SGIOC_DMASEL_ISDNB 0x01 /* enable isdn B */
#define SGIOC_DMASEL_ISDNA 0x02 /* enable isdn A */
#define SGIOC_DMASEL_PPORT 0x04 /* use parallel DMA */
#define SGIOC_DMASEL_SCLK667MHZ 0x10 /* use 6.67MHZ serial clock */
#define SGIOC_DMASEL_SCLKEXT 0x20 /* use external serial clock */
u32 _unused4;
u8 _reset[3];
volatile u8 reset;
#define SGIOC_RESET_PPORT 0x01 /* 0=parport reset, 1=nornal */
#define SGIOC_RESET_KBDMOUSE 0x02 /* 0=kbdmouse reset, 1=normal */
#define SGIOC_RESET_EISA 0x04 /* 0=eisa reset, 1=normal */
#define SGIOC_RESET_ISDN 0x08 /* 0=isdn reset, 1=normal */
#define SGIOC_RESET_LC0OFF 0x10 /* guiness: turn led off (red, else green) */
#define SGIOC_RESET_LC1OFF 0x20 /* guiness: turn led off (green, else amber) */
u32 _unused5;
u8 _write[3];
volatile u8 write;
#define SGIOC_WRITE_NTHRESH 0x01 /* use 4.5db threshhold */
#define SGIOC_WRITE_TPSPEED 0x02 /* use 100ohm TP speed */
#define SGIOC_WRITE_EPSEL 0x04 /* force cable mode: 1=AUI 0=TP */
#define SGIOC_WRITE_EASEL 0x08 /* 1=autoselect 0=manual cable selection */
#define SGIOC_WRITE_U1AMODE 0x10 /* 1=PC 0=MAC UART mode */
#define SGIOC_WRITE_U0AMODE 0x20 /* 1=PC 0=MAC UART mode */
#define SGIOC_WRITE_MLO 0x40 /* 1=4.75V 0=+5V */
#define SGIOC_WRITE_MHI 0x80 /* 1=5.25V 0=+5V */
u32 _unused6;
struct sgint_regs int3;
u32 _unused7[16];
volatile u32 extio; /* FullHouse only */
#define EXTIO_S0_IRQ_3 0x8000 /* S0: vid.vsync */
#define EXTIO_S0_IRQ_2 0x4000 /* S0: gfx.fifofull */
#define EXTIO_S0_IRQ_1 0x2000 /* S0: */
#define EXTIO_S0_RETRACE 0x1000
#define EXTIO_SG_IRQ_3 0x0800 /* SG: vid.vsync */
#define EXTIO_SG_IRQ_2 0x0400 /* SG: gfx.fifofull */
#define EXTIO_SG_IRQ_1 0x0200 /* SG: */
#define EXTIO_SG_RETRACE 0x0100
#define EXTIO_GIO_33MHZ 0x0080
#define EXTIO_EISA_BUSERR 0x0040
#define EXTIO_MC_BUSERR 0x0020
#define EXTIO_HPC3_BUSERR 0x0010
#define EXTIO_S0_STAT_1 0x0008
#define EXTIO_S0_STAT_0 0x0004
#define EXTIO_SG_STAT_1 0x0002
#define EXTIO_SG_STAT_0 0x0001
extern struct sgioc_regs *sgioc;
extern struct sgint_regs *sgint;