include/asm-x86/visws/piix4.h

   1 #ifndef ASM_X86__VISWS__PIIX4_H
   2 #define ASM_X86__VISWS__PIIX4_H
   3
   4 /*
   5  * PIIX4 as used on SGI Visual Workstations
   6  */
   7
   8 #define PIIX_PM_START           0x0F80
   9
  10 #define SIO_GPIO_START          0x0FC0
  11
  12 #define SIO_PM_START            0x0FC8
  13
  14 #define PMBASE                  PIIX_PM_START
  15 #define GPIREG0                 (PMBASE+0x30)
  16 #define GPIREG(x)               (GPIREG0+((x)/8))
  17 #define GPIBIT(x)               (1 << ((x)%8))
  18
  19 #define PIIX_GPI_BD_ID1         18
  20 #define PIIX_GPI_BD_ID2         19
  21 #define PIIX_GPI_BD_ID3         20
  22 #define PIIX_GPI_BD_ID4         21
  23 #define PIIX_GPI_BD_REG         GPIREG(PIIX_GPI_BD_ID1)
  24 #define PIIX_GPI_BD_MASK        (GPIBIT(PIIX_GPI_BD_ID1) | \
  25                                 GPIBIT(PIIX_GPI_BD_ID2) | \
  26                                 GPIBIT(PIIX_GPI_BD_ID3) | \
  27                                 GPIBIT(PIIX_GPI_BD_ID4) )
  28
  29 #define PIIX_GPI_BD_SHIFT       (PIIX_GPI_BD_ID1 % 8)
  30
  31 #define SIO_INDEX               0x2e
  32 #define SIO_DATA                0x2f
  33
  34 #define SIO_DEV_SEL             0x7
  35 #define SIO_DEV_ENB             0x30
  36 #define SIO_DEV_MSB             0x60
  37 #define SIO_DEV_LSB             0x61
  38
  39 #define SIO_GP_DEV              0x7
  40
  41 #define SIO_GP_BASE             SIO_GPIO_START
  42 #define SIO_GP_MSB              (SIO_GP_BASE>>8)
  43 #define SIO_GP_LSB              (SIO_GP_BASE&0xff)
  44
  45 #define SIO_GP_DATA1            (SIO_GP_BASE+0)
  46
  47 #define SIO_PM_DEV              0x8
  48
  49 #define SIO_PM_BASE             SIO_PM_START
  50 #define SIO_PM_MSB              (SIO_PM_BASE>>8)
  51 #define SIO_PM_LSB              (SIO_PM_BASE&0xff)
  52 #define SIO_PM_INDEX            (SIO_PM_BASE+0)
  53 #define SIO_PM_DATA             (SIO_PM_BASE+1)
  54
  55 #define SIO_PM_FER2             0x1
  56
  57 #define SIO_PM_GP_EN            0x80
  58
  59
  60
  61 /*
  62  * This is the dev/reg where generating a config cycle will
  63  * result in a PCI special cycle.
  64  */
  65 #define SPECIAL_DEV             0xff
  66 #define SPECIAL_REG             0x00
  67
  68 /*
  69  * PIIX4 needs to see a special cycle with the following data
  70  * to be convinced the processor has gone into the stop grant
  71  * state.  PIIX4 insists on seeing this before it will power
  72  * down a system.
  73  */
  74 #define PIIX_SPECIAL_STOP               0x00120002
  75
  76 #define PIIX4_RESET_PORT        0xcf9
  77 #define PIIX4_RESET_VAL         0x6
  78
  79 #define PMSTS_PORT              0xf80   // 2 bytes      PM Status
  80 #define PMEN_PORT               0xf82   // 2 bytes      PM Enable
  81 #define PMCNTRL_PORT            0xf84   // 2 bytes      PM Control
  82
  83 #define PM_SUSPEND_ENABLE       0x2000  // start sequence to suspend state
  84
  85 /*
  86  * PMSTS and PMEN I/O bit definitions.
  87  * (Bits are the same in both registers)
  88  */
  89 #define PM_STS_RSM              (1<<15) // Resume Status
  90 #define PM_STS_PWRBTNOR         (1<<11) // Power Button Override
  91 #define PM_STS_RTC              (1<<10) // RTC status
  92 #define PM_STS_PWRBTN           (1<<8)  // Power Button Pressed?
  93 #define PM_STS_GBL              (1<<5)  // Global Status
  94 #define PM_STS_BM               (1<<4)  // Bus Master Status
  95 #define PM_STS_TMROF            (1<<0)  // Timer Overflow Status.
  96
  97 /*
  98  * Stop clock GPI register
  99  */
 100 #define PIIX_GPIREG0                    (0xf80 + 0x30)
 101
 102 /*
 103  * Stop clock GPI bit in GPIREG0
 104  */
 105 #define PIIX_GPI_STPCLK         0x4     // STPCLK signal routed back in
 106
 107 #endif /* ASM_X86__VISWS__PIIX4_H */