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/* $OpenBSD: busswreg.h,v 1.7 2005/12/11 21:31:36 miod Exp $ */
/*
* Memory map for BusSwitch chip found in mvme197 boards.
*/
#ifndef BUSSWREG_H
#define BUSSWREG_H
#define BS_BASE 0xfff00000
#define BS_SIZE 0x00000120
#define BS_CHIPID 0x0000
#define BS_CHIPREV 0x0001
#define BS_GCSR 0x0002
#define BS_IODATA 0x0004
#define BS_IODIR 0x0006
#define BS_PSAR1 0x0008
#define BS_PEAR1 0x000a
#define BS_PSAR2 0x000c
#define BS_PEAR2 0x000e
#define BS_PSAR3 0x0010
#define BS_PEAR3 0x0012
#define BS_PSAR4 0x0014
#define BS_PEAR4 0x0016
#define BS_PTR1 0x0018
#define BS_PTSR1 0x001a
#define BS_PTR2 0x001c
#define BS_PTSR2 0x001e
#define BS_PTR3 0x0020
#define BS_PTSR3 0x0022
#define BS_PTR4 0x0024
#define BS_PTSR4 0x0026
#define BS_SSAR1 0x0028
#define BS_SEAR1 0x002a
#define BS_SSAR2 0x002c
#define BS_SEAR2 0x002e
#define BS_SSAR3 0x0030
#define BS_SEAR3 0x0032
#define BS_SSAR4 0x0034
#define BS_SEAR4 0x0036
#define BS_STR1 0x0038
#define BS_STSR1 0x003a
#define BS_STR2 0x003c
#define BS_STSR2 0x003e
#define BS_STR3 0x0040
#define BS_STSR3 0x0042
#define BS_STR4 0x0044
#define BS_STSR4 0x0046
#define BS_PAR 0x0048
#define BS_SAR 0x004c
#define BS_BTIMER 0x0051
#define BS_PADJUST 0x0052
#define BS_PCOUNT 0x0053
#define BS_PAL 0x0054
#define BS_WPPA 0x0058
#define BS_WPTPA 0x005c
#define BS_WPPAT 0x005e
#define BS_ROMCR 0x0060
#define BS_TCTRL1 0x0062
#define BS_TCTRL2 0x0063
#define BS_LEVEL 0x0064
#define BS_MASK 0x0065
#define BS_ISEL0 0x0066
#define BS_ISEL1 0x0067
#define BS_ABORT 0x0068
#define BS_CPINT 0x0069
#define BS_TINT1 0x006a
#define BS_TINT2 0x006b
#define BS_WPINT 0x006c
#define BS_PALINT 0x006d
#define BS_XINT 0x006e
#define BS_VBASE 0x006f
#define BS_TCOMP1 0x0070
#define BS_TCOUNT1 0x0074
#define BS_TCOMP2 0x0078
#define BS_TCOUNT2 0x007c
#define BS_GPR 0x0080
#define BS_XCTAGS 0x0090
#define BS_XCCR 0x0100
#define BS_VEC 0x0104
#define BUSSWITCH_ID 0x21 /* value at CHIPID */
/* GCSR bit definitions */
#define BS_GCSR_APRI0 0x0001 /* Bus Request 0 Priority indicator (CPU0)*/
#define BS_GCSR_APRI1 0x0002 /* Bus Request 1 Priority indicator (CPU1)*/
#define BS_GCSR_APRI2 0x0003 /* Bus Request 2 Priority indicator (mc88410)*/
#define BS_GCSR_AMOD 0x0004 /* Arbitration Mode */
#define BS_GCSR_BREN 0x0008 /* Bus Request Enable */
#define BS_GCSR_CPUID 0x0010 /* CPU ID */
#define BS_GCSR_B410 0x0020 /* BUS410 indicator */
#define BS_GCSR_INVD 0x0040 /* Invalidate Decoder */
#define BS_GCSR_USR 0x0080 /* User Access Enable */
#define BS_GCSR_XIPL 0x0100 /* External IPL Enable */
#define BS_GCSR_TCPU1 0x0200 /* Test CPU 1 Registers */
#define BS_GCSR_XCC 0x0400 /* External Cache Controller */
#define BS_GCSR_INCB 0x0800 /* Increment On Burst */
#define BS_GCSR_TDPR 0x2000 /* Test Dual Processor Registers */
#define BS_GCSR_TBB 0x4000 /* Test Bus Busy */
#define BS_GCSR_POR 0x8000 /* Power On Reset */
/* System Attribute Registers bit definitions */
#define BS_SAR_DEN 0x01 /* Decode Enable */
#define BS_SAR_INVR 0x04 /* Invalidate On Reads */
#define BS_SAR_GBL 0x08 /* Global Access */
/* Bus Timer Register bit definitions */
#define BS_BTIMER_PBT8 0x00 /* Processor Bus Timout, 8 usec */
#define BS_BTIMER_PBT64 0x01 /* Processor Bus Timout, 64 usec */
#define BS_BTIMER_PBT256 0x02 /* Processor Bus Timout, 256 usec */
#define BS_BTIMER_PBTD 0x03 /* Processor Bus Timout, disable */
#define BS_BTIMER_SBT8 (0x00 << 2) /* System Bus Timout, 8 usec */
#define BS_BTIMER_SBT64 (0x01 << 2) /* System Bus Timout, 64 usec */
#define BS_BTIMER_SBT256 (0x02 << 2) /* System Bus Timout, 256 usec */
#define BS_BTIMER_SBTD (0x03 << 2) /* System Bus Timout, disable */
/* Prescaler Adjust values */
#define BS_PADJUST_50 0xce /* 50 MHz clock */
#define BS_PADJUST_40 0xd8 /* 40 MHz clock */
#define BS_PADJUST_33 0xdf /* 33 MHz clock */
#define BS_PADJUST_25 0xe7 /* 25 MHz clock */
/* ROM Control Register bit definitions */
#define BS_ROMCR_WEN0 0x0100
#define BS_ROMCR_WEN1 0x0200
#define BS_ROMCR_SGLB 0x0400
#define BS_ROMCR_ROM0 0x8000
/* External Cache Control Register bit definitions */
#define BS_XCC_F0 0x00000001
#define BS_XCC_F1 0x00000002
#define BS_XCC_FBSY 0x00000004
#define BS_XCC_DIAG 0x00000008
/* Abort Control Register */
#define BS_ABORT_ICLR 0x08 /* abort interrupt clear */
#define BS_ABORT_IEN 0x10 /* abort interrupt enable */
#define BS_ABORT_INT 0x20 /* abort interrupt received */
#define BS_ABORT_ABT 0x40 /* abort interrupt asserted */
/* Cross Processor Interrupt Register */
#define BS_CPI_ICLR 0x08 /* cpi interrupt clear */
#define BS_CPI_IEN 0x10 /* cpi interrupt enable */
#define BS_CPI_INT 0x20 /* cpi interrupt received */
#define BS_CPI_STAT 0x40 /* cpi interrupt status */
#define BS_CPI_SCPI 0x80 /* send cross proc interrupt */
/* Timer Interrupt 1 Register */
#define BS_TINT1_ICLR 0x08 /* timer 1 interrupt clear */
#define BS_TINT1_IEN 0x10 /* timer 1 interrupt enable */
#define BS_TINT1_INT 0x20 /* timer 1 interrupt received */
#define BS_TINT1_LM 0x07 /* timer 1 level mask */
#define BS_TINT1_LEVEL(x) (x & BS_TINT1_LM)
/* Timer Interrupt 2 Register */
#define BS_TINT2_ICLR 0x08 /* timer 1 interrupt clear */
#define BS_TINT2_IEN 0x10 /* timer 1 interrupt enable */
#define BS_TINT2_INT 0x20 /* timer 1 interrupt received */
#define BS_TINT2_LM 0x07 /* timer 1 level mask */
#define BS_TINT2_LEVEL(x) (x & BS_TINT2_LM)
/* Write Post Control Register */
#define BS_WPINT_ICLR 0x08 /* WPINT interrupt clear */
#define BS_WPINT_IEN 0x10 /* WPINT interrupt enable */
#define BS_WPINT_INT 0x20 /* WPINT interrupt received */
#define BS_WPINT_LM 0x07 /* WPINT level mask */
#define BS_WPINT_LEVEL(x) (x & BS_WPINT_LM)
/* Processor Address Log Interrupt Register */
#define BS_PALINT_ICLR 0x00 /* PALINT interrupt clear */
#define BS_PALINT_IEN 0x10 /* PALINT interrupt enable */
#define BS_PALINT_INT 0x20 /* PALINT interrupt received */
#define BS_PALINT_PLTY 0x80 /* PALINT polarity */
#define BS_PALINT_LM 0x07 /* PALINT level mask */
#define BS_PALINT_LEVEL(x) (x & BS_PALINT_LM)
/* External Interrupt Register */
#define BS_XINT_ICLR 0x00 /* XINT interrupt clear */
#define BS_XINT_IEN 0x10 /* XINT interrupt enable */
#define BS_XINT_INT 0x20 /* XINT interrupt received */
#define BS_XINT_EL 0x40 /* XINT edge/level */
#define BS_XINT_PLTY 0x80 /* XINT polarity */
#define BS_XINT_LM 0x07 /* XINT level mask */
#define BS_XINT_LEVEL(x) (x & BS_XINT_LM)
/* Vector Base Register (A read upon an interrupt reveals the source) */
#define BS_VBASE_SRC_TMR1 0x0
#define BS_VBASE_SRC_TMR2 0x1
#define BS_VBASE_SRC_WPE 0x2
#define BS_VBASE_SRC_PAL 0x3
#define BS_VBASE_SRC_EXT 0x4 /* external interrupt */
#define BS_VBASE_SRC_SPUR 0x7 /* spurious interrupt */
/* We lock off BusSwitch vectors at 0x40 */
#define BS_VECBASE 0x40
#define BS_NVEC 0x10
/* Bottom 4 bits of the vector returned during IACK cycle */
#define BS_TMR1IRQ 0x01 /* lowest */
#define BS_TMR2IRQ 0x02
#define BS_ABORTIRQ 0x03
/* Define the Abort vector */
#define BS_ABORTVEC (BS_VECBASE | BS_ABORTIRQ)
#endif /* BUSSWREG_H */
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