1 files changed, 107 insertions, 0 deletions
diff --git a/arch/x86/include/asm/visws/piix4.h b/arch/x86/include/asm/visws/piix4.h
new file mode 100644
index 0000000..61c9380
--- /dev/null
+++ b/arch/x86/include/asm/visws/piix4.h
@@ -0,0 +1,107 @@
+#ifndef ASM_X86__VISWS__PIIX4_H
+#define ASM_X86__VISWS__PIIX4_H
+
+/*
+ * PIIX4 as used on SGI Visual Workstations
+ */
+
+#define	PIIX_PM_START		0x0F80
+
+#define	SIO_GPIO_START		0x0FC0
+
+#define	SIO_PM_START		0x0FC8
+
+#define	PMBASE			PIIX_PM_START
+#define	GPIREG0			(PMBASE+0x30)
+#define	GPIREG(x)		(GPIREG0+((x)/8))
+#define	GPIBIT(x)		(1 << ((x)%8))
+
+#define	PIIX_GPI_BD_ID1		18
+#define	PIIX_GPI_BD_ID2		19
+#define	PIIX_GPI_BD_ID3		20
+#define	PIIX_GPI_BD_ID4		21
+#define	PIIX_GPI_BD_REG		GPIREG(PIIX_GPI_BD_ID1)
+#define	PIIX_GPI_BD_MASK	(GPIBIT(PIIX_GPI_BD_ID1) | \
+				GPIBIT(PIIX_GPI_BD_ID2) | \
+				GPIBIT(PIIX_GPI_BD_ID3) | \
+				GPIBIT(PIIX_GPI_BD_ID4) )
+
+#define	PIIX_GPI_BD_SHIFT	(PIIX_GPI_BD_ID1 % 8)
+
+#define	SIO_INDEX		0x2e
+#define	SIO_DATA		0x2f
+
+#define	SIO_DEV_SEL		0x7
+#define	SIO_DEV_ENB		0x30
+#define	SIO_DEV_MSB		0x60
+#define	SIO_DEV_LSB		0x61
+
+#define	SIO_GP_DEV		0x7
+
+#define	SIO_GP_BASE		SIO_GPIO_START
+#define	SIO_GP_MSB		(SIO_GP_BASE>>8)
+#define	SIO_GP_LSB		(SIO_GP_BASE&0xff)
+
+#define	SIO_GP_DATA1		(SIO_GP_BASE+0)
+
+#define	SIO_PM_DEV		0x8
+
+#define	SIO_PM_BASE		SIO_PM_START
+#define	SIO_PM_MSB		(SIO_PM_BASE>>8)
+#define	SIO_PM_LSB		(SIO_PM_BASE&0xff)
+#define	SIO_PM_INDEX		(SIO_PM_BASE+0)
+#define	SIO_PM_DATA		(SIO_PM_BASE+1)
+
+#define	SIO_PM_FER2		0x1
+
+#define	SIO_PM_GP_EN		0x80
+
+
+
+/*
+ * This is the dev/reg where generating a config cycle will
+ * result in a PCI special cycle.
+ */
+#define SPECIAL_DEV		0xff
+#define SPECIAL_REG		0x00
+
+/*
+ * PIIX4 needs to see a special cycle with the following data
+ * to be convinced the processor has gone into the stop grant
+ * state.  PIIX4 insists on seeing this before it will power
+ * down a system.
+ */
+#define PIIX_SPECIAL_STOP		0x00120002
+
+#define PIIX4_RESET_PORT	0xcf9
+#define PIIX4_RESET_VAL		0x6
+
+#define PMSTS_PORT		0xf80	// 2 bytes	PM Status
+#define PMEN_PORT		0xf82	// 2 bytes	PM Enable
+#define	PMCNTRL_PORT		0xf84	// 2 bytes	PM Control
+
+#define PM_SUSPEND_ENABLE	0x2000	// start sequence to suspend state
+
+/*
+ * PMSTS and PMEN I/O bit definitions.
+ * (Bits are the same in both registers)
+ */
+#define PM_STS_RSM		(1<<15)	// Resume Status
+#define PM_STS_PWRBTNOR		(1<<11)	// Power Button Override
+#define PM_STS_RTC		(1<<10)	// RTC status
+#define PM_STS_PWRBTN		(1<<8)	// Power Button Pressed?
+#define PM_STS_GBL		(1<<5)	// Global Status
+#define PM_STS_BM		(1<<4)	// Bus Master Status
+#define PM_STS_TMROF		(1<<0)	// Timer Overflow Status.
+
+/*
+ * Stop clock GPI register
+ */
+#define PIIX_GPIREG0			(0xf80 + 0x30)
+
+/*
+ * Stop clock GPI bit in GPIREG0
+ */
+#define	PIIX_GPI_STPCLK		0x4	// STPCLK signal routed back in
+
+#endif /* ASM_X86__VISWS__PIIX4_H */