1 #ifndef __I386_SGI_PIIX_H
2 #define __I386_SGI_PIIX_H
5 * PIIX4 as used on SGI Visual Workstations
8 #define PIIX_PM_START 0x0F80
10 #define SIO_GPIO_START 0x0FC0
12 #define SIO_PM_START 0x0FC8
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))
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) )
29 #define PIIX_GPI_BD_SHIFT (PIIX_GPI_BD_ID1 % 8)
31 #define SIO_INDEX 0x2e
34 #define SIO_DEV_SEL 0x7
35 #define SIO_DEV_ENB 0x30
36 #define SIO_DEV_MSB 0x60
37 #define SIO_DEV_LSB 0x61
39 #define SIO_GP_DEV 0x7
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)
45 #define SIO_GP_DATA1 (SIO_GP_BASE+0)
47 #define SIO_PM_DEV 0x8
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)
55 #define SIO_PM_FER2 0x1
57 #define SIO_PM_GP_EN 0x80
62 * This is the dev/reg where generating a config cycle will
63 * result in a PCI special cycle.
65 #define SPECIAL_DEV 0xff
66 #define SPECIAL_REG 0x00
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
74 #define PIIX_SPECIAL_STOP 0x00120002
76 #define PIIX4_RESET_PORT 0xcf9
77 #define PIIX4_RESET_VAL 0x6
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
83 #define PM_SUSPEND_ENABLE 0x2000 // start sequence to suspend state
86 * PMSTS and PMEN I/O bit definitions.
87 * (Bits are the same in both registers)
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.
98 * Stop clock GPI register
100 #define PIIX_GPIREG0 (0xf80 + 0x30)
103 * Stop clock GPI bit in GPIREG0
105 #define PIIX_GPI_STPCLK 0x4 // STPCLK signal routed back in