arch/mips/include/asm/sgi/ioc.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License. See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * ioc.h: Definitions for SGI I/O Controller
   7  *
   8  * Copyright (C) 1996 David S. Miller
   9  * Copyright (C) 1997, 1998, 1999, 2000 Ralf Baechle
  10  * Copyright (C) 2001, 2003 Ladislav Michl
  11  */
  12
  13 #ifndef _SGI_IOC_H
  14 #define _SGI_IOC_H
  15
  16 #include <linux/types.h>
  17 #include <asm/sgi/pi1.h>
  18
  19 /*
  20  * All registers are 8-bit wide aligned on 32-bit boundary. Bad things
  21  * happen if you try word access them. You have been warned.
  22  */
  23
  24 struct sgioc_uart_regs {
  25         u8 _ctrl1[3];
  26         volatile u8 ctrl1;
  27         u8 _data1[3];
  28         volatile u8 data1;
  29         u8 _ctrl2[3];
  30         volatile u8 ctrl2;
  31         u8 _data2[3];
  32         volatile u8 data2;
  33 };
  34
  35 struct sgioc_keyb_regs {
  36         u8 _data[3];
  37         volatile u8 data;
  38         u8 _command[3];
  39         volatile u8 command;
  40 };
  41
  42 struct sgint_regs {
  43         u8 _istat0[3];
  44         volatile u8 istat0;             /* Interrupt status zero */
  45 #define SGINT_ISTAT0_FFULL      0x01
  46 #define SGINT_ISTAT0_SCSI0      0x02
  47 #define SGINT_ISTAT0_SCSI1      0x04
  48 #define SGINT_ISTAT0_ENET       0x08
  49 #define SGINT_ISTAT0_GFXDMA     0x10
  50 #define SGINT_ISTAT0_PPORT      0x20
  51 #define SGINT_ISTAT0_HPC2       0x40
  52 #define SGINT_ISTAT0_LIO2       0x80
  53         u8 _imask0[3];
  54         volatile u8 imask0;             /* Interrupt mask zero */
  55         u8 _istat1[3];
  56         volatile u8 istat1;             /* Interrupt status one */
  57 #define SGINT_ISTAT1_ISDNI      0x01
  58 #define SGINT_ISTAT1_PWR        0x02
  59 #define SGINT_ISTAT1_ISDNH      0x04
  60 #define SGINT_ISTAT1_LIO3       0x08
  61 #define SGINT_ISTAT1_HPC3       0x10
  62 #define SGINT_ISTAT1_AFAIL      0x20
  63 #define SGINT_ISTAT1_VIDEO      0x40
  64 #define SGINT_ISTAT1_GIO2       0x80
  65         u8 _imask1[3];
  66         volatile u8 imask1;             /* Interrupt mask one */
  67         u8 _vmeistat[3];
  68         volatile u8 vmeistat;           /* VME interrupt status */
  69         u8 _cmeimask0[3];
  70         volatile u8 cmeimask0;          /* VME interrupt mask zero */
  71         u8 _cmeimask1[3];
  72         volatile u8 cmeimask1;          /* VME interrupt mask one */
  73         u8 _cmepol[3];
  74         volatile u8 cmepol;             /* VME polarity */
  75         u8 _tclear[3];
  76         volatile u8 tclear;
  77         u8 _errstat[3];
  78         volatile u8 errstat;    /* Error status reg, reserved on INT2 */
  79         u32 _unused0[2];
  80         u8 _tcnt0[3];
  81         volatile u8 tcnt0;              /* counter 0 */
  82         u8 _tcnt1[3];
  83         volatile u8 tcnt1;              /* counter 1 */
  84         u8 _tcnt2[3];
  85         volatile u8 tcnt2;              /* counter 2 */
  86         u8 _tcword[3];
  87         volatile u8 tcword;             /* control word */
  88 #define SGINT_TCWORD_BCD        0x01    /* Use BCD mode for counters */
  89 #define SGINT_TCWORD_MMASK      0x0e    /* Mode bitmask. */
  90 #define SGINT_TCWORD_MITC       0x00    /* IRQ on terminal count (doesn't work) */
  91 #define SGINT_TCWORD_MOS        0x02    /* One-shot IRQ mode. */
  92 #define SGINT_TCWORD_MRGEN      0x04    /* Normal rate generation */
  93 #define SGINT_TCWORD_MSWGEN     0x06    /* Square wave generator mode */
  94 #define SGINT_TCWORD_MSWST      0x08    /* Software strobe */
  95 #define SGINT_TCWORD_MHWST      0x0a    /* Hardware strobe */
  96 #define SGINT_TCWORD_CMASK      0x30    /* Command mask */
  97 #define SGINT_TCWORD_CLAT       0x00    /* Latch command */
  98 #define SGINT_TCWORD_CLSB       0x10    /* LSB read/write */
  99 #define SGINT_TCWORD_CMSB       0x20    /* MSB read/write */
 100 #define SGINT_TCWORD_CALL       0x30    /* Full counter read/write */
 101 #define SGINT_TCWORD_CNT0       0x00    /* Select counter zero */
 102 #define SGINT_TCWORD_CNT1       0x40    /* Select counter one */
 103 #define SGINT_TCWORD_CNT2       0x80    /* Select counter two */
 104 #define SGINT_TCWORD_CRBCK      0xc0    /* Readback command */
 105 };
 106
 107 /*
 108  * The timer is the good old 8254.  Unlike in PCs it's clocked at exactly 1MHz
 109  */
 110 #define SGINT_TIMER_CLOCK       1000000
 111
 112 /*
 113  * This is the constant we're using for calibrating the counter.
 114  */
 115 #define SGINT_TCSAMP_COUNTER    ((SGINT_TIMER_CLOCK / HZ) + 255)
 116
 117 /* We need software copies of these because they are write only. */
 118 extern u8 sgi_ioc_reset, sgi_ioc_write;
 119
 120 struct sgioc_regs {
 121         struct pi1_regs pport;
 122         u32 _unused0[2];
 123         struct sgioc_uart_regs uart;
 124         struct sgioc_keyb_regs kbdmouse;
 125         u8 _gcsel[3];
 126         volatile u8 gcsel;
 127         u8 _genctrl[3];
 128         volatile u8 genctrl;
 129         u8 _panel[3];
 130         volatile u8 panel;
 131 #define SGIOC_PANEL_POWERON     0x01
 132 #define SGIOC_PANEL_POWERINTR   0x02
 133 #define SGIOC_PANEL_VOLDNINTR   0x10
 134 #define SGIOC_PANEL_VOLDNHOLD   0x20
 135 #define SGIOC_PANEL_VOLUPINTR   0x40
 136 #define SGIOC_PANEL_VOLUPHOLD   0x80
 137         u32 _unused1;
 138         u8 _sysid[3];
 139         volatile u8 sysid;
 140 #define SGIOC_SYSID_FULLHOUSE   0x01
 141 #define SGIOC_SYSID_BOARDREV(x) (((x) & 0x1e) >> 1)
 142 #define SGIOC_SYSID_CHIPREV(x)  (((x) & 0xe0) >> 5)
 143         u32 _unused2;
 144         u8 _read[3];
 145         volatile u8 read;
 146         u32 _unused3;
 147         u8 _dmasel[3];
 148         volatile u8 dmasel;
 149 #define SGIOC_DMASEL_SCLK10MHZ  0x00    /* use 10MHZ serial clock */
 150 #define SGIOC_DMASEL_ISDNB      0x01    /* enable isdn B */
 151 #define SGIOC_DMASEL_ISDNA      0x02    /* enable isdn A */
 152 #define SGIOC_DMASEL_PPORT      0x04    /* use parallel DMA */
 153 #define SGIOC_DMASEL_SCLK667MHZ 0x10    /* use 6.67MHZ serial clock */
 154 #define SGIOC_DMASEL_SCLKEXT    0x20    /* use external serial clock */
 155         u32 _unused4;
 156         u8 _reset[3];
 157         volatile u8 reset;
 158 #define SGIOC_RESET_PPORT       0x01    /* 0=parport reset, 1=nornal */
 159 #define SGIOC_RESET_KBDMOUSE    0x02    /* 0=kbdmouse reset, 1=normal */
 160 #define SGIOC_RESET_EISA        0x04    /* 0=eisa reset, 1=normal */
 161 #define SGIOC_RESET_ISDN        0x08    /* 0=isdn reset, 1=normal */
 162 #define SGIOC_RESET_LC0OFF      0x10    /* guiness: turn led off (red, else green) */
 163 #define SGIOC_RESET_LC1OFF      0x20    /* guiness: turn led off (green, else amber) */
 164         u32 _unused5;
 165         u8 _write[3];
 166         volatile u8 write;
 167 #define SGIOC_WRITE_NTHRESH     0x01    /* use 4.5db threshold */
 168 #define SGIOC_WRITE_TPSPEED     0x02    /* use 100ohm TP speed */
 169 #define SGIOC_WRITE_EPSEL       0x04    /* force cable mode: 1=AUI 0=TP */
 170 #define SGIOC_WRITE_EASEL       0x08    /* 1=autoselect 0=manual cable selection */
 171 #define SGIOC_WRITE_U1AMODE     0x10    /* 1=PC 0=MAC UART mode */
 172 #define SGIOC_WRITE_U0AMODE     0x20    /* 1=PC 0=MAC UART mode */
 173 #define SGIOC_WRITE_MLO         0x40    /* 1=4.75V 0=+5V */
 174 #define SGIOC_WRITE_MHI         0x80    /* 1=5.25V 0=+5V */
 175         u32 _unused6;
 176         struct sgint_regs int3;
 177         u32 _unused7[16];
 178         volatile u32 extio;             /* FullHouse only */
 179 #define EXTIO_S0_IRQ_3          0x8000  /* S0: vid.vsync */
 180 #define EXTIO_S0_IRQ_2          0x4000  /* S0: gfx.fifofull */
 181 #define EXTIO_S0_IRQ_1          0x2000  /* S0: gfx.int */
 182 #define EXTIO_S0_RETRACE        0x1000
 183 #define EXTIO_SG_IRQ_3          0x0800  /* SG: vid.vsync */
 184 #define EXTIO_SG_IRQ_2          0x0400  /* SG: gfx.fifofull */
 185 #define EXTIO_SG_IRQ_1          0x0200  /* SG: gfx.int */
 186 #define EXTIO_SG_RETRACE        0x0100
 187 #define EXTIO_GIO_33MHZ         0x0080
 188 #define EXTIO_EISA_BUSERR       0x0040
 189 #define EXTIO_MC_BUSERR         0x0020
 190 #define EXTIO_HPC3_BUSERR       0x0010
 191 #define EXTIO_S0_STAT_1         0x0008
 192 #define EXTIO_S0_STAT_0         0x0004
 193 #define EXTIO_SG_STAT_1         0x0002
 194 #define EXTIO_SG_STAT_0         0x0001
 195 };
 196
 197 extern struct sgioc_regs *sgioc;
 198 extern struct sgint_regs *sgint;
 199
 200 #endif