sgihpc.h

this SRC packet is the headfiles that MIZI vivi bootloader needed when compling

	/* Here are where the hpc3 fifo's can be directly accessed
	 * via PIO accesses.  Under normal operation we never stick
	 * our grubby paws in here so it's just padding.
	 */
	char _unused1[PAGE_SIZE * 24];

	/* HPC3 irq status regs.  Due to a peculiar bug you need to
	 * look at two different register addresses to get at all of
	 * the status bits.  The first reg can only reliably report
	 * bits 4:0 of the status, and the second reg can only
	 * reliably report bits 9:5 of the hpc3 irq status.  I told
	 * you it was a peculiar bug. ;-)
	 */
	hpcreg istat0;      /* Irq status, only bits <4:0> reliable. */
#define HPC3_ISTAT_PBIMASK  0x0ff  /* irq bits for pbus devs 0 --> 7 */
#define HPC3_ISTAT_SC0MASK  0x100  /* irq bit for scsi channel 0 */
#define HPC3_ISTAT_SC1MASK  0x200  /* irq bit for scsi channel 1 */

	hpcreg gio64_misc;  /* GIO64 misc control bits. */
#define HPC3_GIOMISC_ERTIME   0x1    /* Enable external timer real time. */
#define HPC3_GIOMISC_DENDIAN  0x2    /* dma descriptor endian, 1=lit 0=big */

	hpcreg eeprom_data; /* EEPROM data reg. */
#define HPC3_EEPROM_EPROT     0x01   /* Protect register enable */
#define HPC3_EEPROM_CSEL      0x02   /* Chip select */
#define HPC3_EEPROM_ECLK      0x04   /* EEPROM clock */
#define HPC3_EEPROM_DATO      0x08   /* Data out */
#define HPC3_EEPROM_DATI      0x10   /* Data in */

	hpcreg istat1;      /* Irq status, only bits <9:5> reliable. */
	hpcreg gio64_estat; /* GIO64 error interrupt status reg. */
#define HPC3_GIOESTAT_BLMASK  0x000ff  /* Bus lane where bad parity occurred */
#define HPC3_GIOESTAT_CTYPE   0x00100  /* Bus cycle type, 0=PIO 1=DMA */
#define HPC3_GIOESTAT_PIDMSK  0x3f700  /* DMA channel parity identifier */

	/* Now direct PIO per-HPC3 peripheral access to external regs. */
	char _unused2[0x13fec]; /* Trust me... */
	hpcreg scsi0_ext[256];  /* SCSI channel 0 external regs */
	char _unused3[0x07c00]; /* Trust me... */
	hpcreg scsi1_ext[256];  /* SCSI channel 1 external regs */
	char _unused4[0x07c00]; /* It'll only hurt a little... */

	/* Did DaveM forget the ethernet external regs?
	 * Anyhow, they're not here and we need some padding instead.
	 */
	char _unused5[0x04000]; /* It'll hurt a lot if you leave this out */

	/* Per-peripheral device external registers and dma/pio control. */
	hpcreg pbus_extregs[16][256]; /* 2nd indice indexes controller */
	hpcreg pbus_dmacfgs[8][128]; /* 2nd indice indexes controller */
#define HPC3_PIODCFG_D3R    0x00000001 /* Cycles to spend in D3 for reads */
#define HPC3_PIODCFG_D4R    0x0000001e /* Cycles to spend in D4 for reads */
#define HPC3_PIODCFG_D5R    0x000001e0 /* Cycles to spend in D5 for reads */
#define HPC3_PIODCFG_D3W    0x00000200 /* Cycles to spend in D3 for writes */
#define HPC3_PIODCFG_D4W    0x00003c00 /* Cycles to spend in D4 for writes */
#define HPC3_PIODCFG_D5W    0x0003c000 /* Cycles to spend in D5 for writes */
#define HPC3_PIODCFG_HWORD  0x00040000 /* Enable 16-bit dma access mode */
#define HPC3_PIODCFG_EHI    0x00080000 /* Places halfwords on high 16 bits of bus */
#define HPC3_PIODCFG_RTIME  0x00200000 /* Make this device real time on GIO bus */
#define HPC3_PIODCFG_BURST  0x07c00000 /* 5 bit burst count for DMA device */
#define HPC3_PIODCFG_DRQLV  0x08000000 /* Use live pbus_dreq unsynchronized signal */

	hpcreg pbus_piocfgs[64][10]; /* 2nd indice indexes controller */
#define HPC3_PIOPCFG_RP2    0x00001  /* Cycles to spend in P2 state for reads */
#define HPC3_PIOPCFG_RP3    0x0001e  /* Cycles to spend in P3 state for reads */
#define HPC3_PIOPCFG_RP4    0x001e0  /* Cycles to spend in P4 state for reads */
#define HPC3_PIOPCFG_WP2    0x00200  /* Cycles to spend in P2 state for writes */
#define HPC3_PIOPCFG_WP3    0x03c00  /* Cycles to spend in P3 state for writes */
#define HPC3_PIOPCFG_WP4    0x3c000  /* Cycles to spend in P4 state for writes */
#define HPC3_PIOPCFG_HW     0x40000  /* Enable 16-bit PIO accesses */
#define HPC3_PIOPCFG_EHI    0x80000  /* Place even address bits in bits <15:8> */

	/* PBUS PROM control regs. */
	hpcreg pbus_promwe;     /* PROM write enable register */
#define HPC3_PROM_WENAB     0x1 /* Enable writes to the PROM */

	char _unused6[0x800 - sizeof(hpcreg)];
	hpcreg pbus_promswap;   /* Chip select swap reg */
#define HPC3_PROM_SWAP      0x1 /* invert GIO addr bit to select prom0 or prom1 */

	char _unused7[0x800 - sizeof(hpcreg)];
	hpcreg pbus_gout;       /* PROM general purpose output reg */
#define HPC3_PROM_STAT      0x1 /* General purpose status bit in gout */

	char _unused8[0x1000 - sizeof(hpcreg)];
	hpcreg pbus_promram[16384]; /* 64k of PROM battery backed ram */
};

/* It is possible to have two HPC3's within the address space on
 * one machine, though only having one is more likely on an INDY.
 * Controller 0 lives at physical address 0x1fb80000 and the controller
 * 1 if present lives at address 0x1fb00000.
 */
extern struct hpc3_regs *hpc3c0, *hpc3c1;
#define HPC3_CHIP0_PBASE   0x1fb80000 /* physical */
#define HPC3_CHIP1_PBASE   0x1fb00000 /* physical */

/* Control and misc status information, these live in pbus channel 6. */
struct hpc3_miscregs {
	hpcreg pdata, pctrl, pstat, pdmactrl, pistat, pimask;
	hpcreg ptimer1, ptimer2, ptimer3, ptimer4;
	hpcreg _unused1[2];
	hpcreg ser1cmd, ser1data;
	hpcreg ser0cmd, ser0data;
	hpcreg kbdmouse0, kbdmouse1;
	hpcreg gcsel, genctrl, panel;
	hpcreg _unused2;
	hpcreg sysid;
	hpcreg _unused3;
	hpcreg read, _unused4;
	hpcreg dselect;
#define HPC3_DSELECT_SCLK10MHZ   0x00 /* use 10MHZ serial clock */
#define HPC3_DSELECT_ISDNB       0x01 /* enable isdn B */
#define HPC3_DSELECT_ISDNA       0x02 /* enable isdn A */
#define HPC3_DSELECT_LPR         0x04 /* use parallel DMA */
#define HPC3_DSELECT_SCLK667MHZ  0x10 /* use 6.67MHZ serial clock */
#define HPC3_DSELECT_SCLKEXT     0x20 /* use external serial clock */

	hpcreg _unused5;
	hpcreg write1;
#define HPC3_WRITE1_PRESET    0x01  /* 0=LPR_RESET, 1=NORMAL */
#define HPC3_WRITE1_KMRESET   0x02  /* 0=KBDMOUSE_RESET, 1=NORMAL */
#define HPC3_WRITE1_ERESET    0x04  /* 0=EISA_RESET, 1=NORMAL */
#define HPC3_WRITE1_GRESET    0x08  /* 0=MAGIC_GIO_RESET, 1=NORMAL */
#define HPC3_WRITE1_LC0OFF    0x10  /* turn led off (guiness=red, else green) */
#define HPC3_WRITE1_LC1OFF    0x20  /* turn led off (guiness=green, else amber) */

	hpcreg _unused6;
	hpcreg write2;
#define HPC3_WRITE2_NTHRESH  0x01 /* use 4.5db threshhold */
#define HPC3_WRITE2_TPSPEED  0x02 /* use 100ohm TP speed */
#define HPC3_WRITE2_EPSEL    0x04 /* force cable mode: 1=AUI 0=TP */
#define HPC3_WRITE2_EASEL    0x08 /* 1=autoselect 0=manual cable selection */
#define HPC3_WRITE2_U1AMODE  0x10 /* 1=PC 0=MAC UART mode */
#define HPC3_WRITE2_U0AMODE  0x20 /* 1=PC 0=MAC UART mode */
#define HPC3_WRITE2_MLO      0x40 /* 1=4.75V 0=+5V */
#define HPC3_WRITE2_MHI      0x80 /* 1=5.25V 0=+5V */
};
extern struct hpc3_miscregs *hpc3mregs;
#define HPC3_MREGS_PBASE   0x1fbd9800 /* physical */

/* We need software copies of these because they are write only. */
extern unsigned int sgi_hpc_write1, sgi_hpc_write2;

struct hpc_keyb {
#ifdef __MIPSEB__
	unsigned char _unused0[3];
	volatile unsigned char data;
	unsigned char _unused1[3];
	volatile unsigned char command;
#else
	volatile unsigned char data;
	unsigned char _unused0[3];
	volatile unsigned char command;
	unsigned char _unused1[3];
#endif
};

/* Indy RTC  */

/* The layout of registers for the INDY Dallas 1286 clock chipset. */
struct indy_clock {
	volatile unsigned int hsec;
	volatile unsigned int sec;
	volatile unsigned int min;
	volatile unsigned int malarm;
	volatile unsigned int hr;
	volatile unsigned int halarm;
	volatile unsigned int day;
	volatile unsigned int dalarm;
	volatile unsigned int date;
	volatile unsigned int month;
	volatile unsigned int year;
	volatile unsigned int cmd;
	volatile unsigned int whsec;
	volatile unsigned int wsec;
	volatile unsigned int _unused0[50];
};

#define INDY_CLOCK_REGS (KSEG1ADDR(0x1fbe0000))

extern void sgihpc_init(void);

#endif /* !(_MIPS_SGIHPC_H) */