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Diffstat (limited to 'arch/m68k/mac/via6522.h')
| -rw-r--r-- | arch/m68k/mac/via6522.h | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/arch/m68k/mac/via6522.h b/arch/m68k/mac/via6522.h deleted file mode 100644 index 91ba1d58e..000000000 --- a/arch/m68k/mac/via6522.h +++ /dev/null @@ -1,131 +0,0 @@ -/* - * 6522 Versatile Interface Adapter (VIA) - * - * There are two of these on the Mac II. Some IRQ's are vectored - * via them as are assorted bits and bobs - eg rtc, adb. The picture - * is a bit incomplete as the Mac documentation doesnt cover this well - */ - -#ifndef _ASM_VIA6522_H_ -#define _ASM_VIA6522_H_ - -#define VIABASE 0x50F00000 -#define VIABASE2 0x50F02000 - -/* - * Not all of these are true post MacII I think - */ - -#define VIA1A_vSccWrReq 0x80 /* SCC write */ -#define VIA1A_vRev8 0x40 /* Revision 8 board ??? */ -#define VIA1A_vHeadSel 0x20 /* Head select for IWM */ -#define VIA1A_vOverlay 0x10 -#define VIA1A_vSync 0x08 -#define VIA1A_vVolume 0x07 /* Audio volume mask */ - -#define VIA1B_vSound 0x80 /* Audio on/off */ -#define VIA1B_vMystery 0x40 -#define VIA1B_vADBS2 0x20 /* ADB state 2 */ -#define VIA1B_vADBS1 0x10 /* ADB state 1 */ -#define VIA1B_vADBInt 0x08 /* ADB interrupt */ -#define VIA1B_vRTCEnb 0x04 /* Real time clock */ -#define VIA1B_vRTCClk 0x02 -#define VIA1B_vRTCData 0x01 - -/* - * VIA2 A register is the interrupt lines raised off the nubus - * slots. - */ - -#define VIA2A_vIRQE 0x20 -#define VIA2A_vIRQD 0x10 -#define VIA2A_vIRQC 0x08 -#define VIA2A_vIRQB 0x04 -#define VIA2A_vIRQA 0x02 -#define VIA2A_vIRQ9 0x01 - -/* - * Register B has the fun stuff in it - */ - -#define VIA2B_vMode32 0x08 /* 24/32bit switch - doubles as cache flush */ -#define VIA2B_vPower 0x04 /* Off switch */ -#define VIA2B_vBusLk 0x02 /* Nubus in use ?? */ -#define VIA2B_vCDis 0x01 /* Cache disable */ - -/* - * The 6522 via is a 2MHz part, and needs a delay. MacOS seems to - * execute MOV (Ax),(Ax) for this... Oh and we can't use udelay - * here... see we need the via to calibrate the udelay loop ... - */ - -extern volatile long *via_memory_bogon; - -extern __inline__ void via_write(volatile unsigned char *via,int reg, int v) -{ - *via_memory_bogon; - *via_memory_bogon; - *via_memory_bogon; - via[reg]=v; -} - -extern __inline__ int via_read(volatile unsigned char *via,int reg) -{ - *via_memory_bogon; - *via_memory_bogon; - *via_memory_bogon; - return (int)via[reg]; -} - -extern volatile unsigned char *via1,*via2; - -/* - * 6522 registers - see databook - */ - -#define vBufB 0x0000 -#define vBufA 0x0200 -#define vDirB 0x0400 -#define vDirA 0x0600 -#define vT1CL 0x0800 -#define vT1CH 0x0a00 -#define vT1LL 0x0c00 -#define vT1LH 0x0e00 -#define vT2CL 0x1000 -#define vT2CH 0x1200 -#define vSR 0x1400 -#define vACR 0x1600 -#define vPCR 0x1800 -#define vIFR 0x1a00 -#define vIER 0x1c00 -#define vANH 0x1e00 /* register A (no shake) */ - -#define rBufB 0x00 -#define rBufA 0x02 -/*#define rIFR 0x03*/ -#define rIFR 0x1A03 -#define rVideo 0x10 -#define rSlot 0x12 -/*#define rIER 0x13*/ -#define rIER 0x1C13 -/* -#define R_rIFR 0x03 -#define R_rIER 0x13 -#define W_rIFR 0x1A03 -#define W_rIER 0x1C13 -*/ -/* - * VIA interrupt - */ - -struct via_irq_tab -{ - void (*vector[8])(int, void *, struct pt_regs *); -}; - -extern void via1_irq(int, void *, struct pt_regs *); -extern void via2_irq(int, void *, struct pt_regs *); - -extern void via_setup_keyboard(void); - -#endif /* _ASM_VIA6522_H_ */ |