/* $Id: sgihpc.h,v 1.7 1999/08/11 20:26:49 andrewb Exp $ * * sgihpc.h: Various HPC I/O controller defines. The HPC is basically * the approximate functional equivalent of the Sun SYSIO * on SGI INDY machines. * * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com) * Copyright (C) 1998 Ralf Baechle (ralf@gnu.org) */ #ifndef _MIPS_SGIHPC_H #define _MIPS_SGIHPC_H #include extern int sgi_has_ioc2; /* to know if we have older ioc1 or ioc2. */ extern int sgi_guiness; /* GUINESS or FULLHOUSE machine. */ extern int sgi_boardid; /* Board revision. */ /* An HPC dma descriptor. */ struct hpc_dma_desc { unsigned long pbuf; /* physical address of data buffer */ unsigned long cntinfo; /* counter and info bits */ #define HPCDMA_EOX 0x80000000 /* last desc in chain for tx */ #define HPCDMA_EOR 0x80000000 /* last desc in chain for rx */ #define HPCDMA_EOXP 0x40000000 /* end of packet for tx */ #define HPCDMA_EORP 0x40000000 /* end of packet for rx */ #define HPCDMA_XIE 0x20000000 /* irq generated when at end of this desc */ #define HPCDMA_XIU 0x01000000 /* Tx buffer in use by CPU. */ #define HPCDMA_EIPC 0x00ff0000 /* SEEQ ethernet special xternal bytecount */ #define HPCDMA_ETXD 0x00008000 /* set to one by HPC when packet tx'd */ #define HPCDMA_OWN 0x00004000 /* Denotes ring buffer ownership on rx */ #define HPCDMA_BCNT 0x00003fff /* size in bytes of this dma buffer */ unsigned long pnext; /* paddr of next hpc_dma_desc if any */ }; typedef volatile unsigned long hpcreg; /* HPC1 stuff. */ /* HPC3 stuff. */ /* The set of regs for each HPC3 pbus dma channel. */ struct hpc3_pbus_dmacregs { hpcreg pbdma_bptr; /* pbus dma channel buffer ptr */ hpcreg pbdma_dptr; /* pbus dma channel desc ptr */ char _unused1[PAGE_SIZE - (2 * sizeof(hpcreg))]; /* padding */ hpcreg pbdma_ctrl; /* pbus dma channel control reg */ #define HPC3_PDMACTRL_SEL 0x00000002 /* little endian transfer */ #define HPC3_PDMACTRL_RCV 0x00000004 /* direction is receive */ #define HPC3_PDMACTRL_FLSH 0x00000008 /* enable flush for receive DMA */ #define HPC3_PDMACTRL_ACT 0x00000010 /* start dma transfer */ #define HPC3_PDMACTRL_LD 0x00000020 /* load enable for ACT */ #define HPC3_PDMACTRL_RT 0x00000040 /* Use realtime GIO bus servicing */ #define HPC3_PDMACTRL_HW 0x0000ff00 /* DMA High-water mark */ #define HPC3_PDMACTRL_FB 0x003f0000 /* Ptr to beginning of fifo */ #define HPC3_PDMACTRL_FE 0x3f000000 /* Ptr to end of fifo */ char _unused2[PAGE_SIZE - (sizeof(hpcreg))]; /* padding */ }; /* The HPC3 scsi registers, this does not include external ones. */ struct hpc3_scsiregs { hpcreg cbptr; /* current dma buffer ptr, diagnostic use only */ hpcreg ndptr; /* next dma descriptor ptr */ char _unused1[PAGE_SIZE - (2 * sizeof(hpcreg))]; /* padding */ hpcreg bcd; /* byte count info */ #define HPC3_SBCD_BCNTMSK 0x00003fff /* bytes to transfer from/to memory */ #define HPC3_SBCD_XIE 0x00004000 /* Send IRQ when done with cur buf */ #define HPC3_SBCD_EOX 0x00008000 /* Indicates this is last buf in chain */ hpcreg ctrl; /* control register */ #define HPC3_SCTRL_IRQ 0x01 /* IRQ asserted, either dma done or parity */ #define HPC3_SCTRL_ENDIAN 0x02 /* DMA endian mode, 0=big 1=little */ #define HPC3_SCTRL_DIR 0x04 /* DMA direction, 1=dev2mem 0=mem2dev */ #define HPC3_SCTRL_FLUSH 0x08 /* Tells HPC3 to flush scsi fifos */ #define HPC3_SCTRL_ACTIVE 0x10 /* SCSI DMA channel is active */ #define HPC3_SCTRL_AMASK 0x20 /* DMA active inhibits PIO */ #define HPC3_SCTRL_CRESET 0x40 /* Resets dma channel and external controller */ #define HPC3_SCTRL_PERR 0x80 /* Bad parity on HPC3 iface to scsi controller */ hpcreg gfptr; /* current GIO fifo ptr */ hpcreg dfptr; /* current device fifo ptr */ hpcreg dconfig; /* DMA configuration register */ #define HPC3_SDCFG_HCLK 0x00001 /* Enable DMA half clock mode */ #define HPC3_SDCFG_D1 0x00006 /* Cycles to spend in D1 state */ #define HPC3_SDCFG_D2 0x00038 /* Cycles to spend in D2 state */ #define HPC3_SDCFG_D3 0x001c0 /* Cycles to spend in D3 state */ #define HPC3_SDCFG_HWAT 0x00e00 /* DMA high water mark */ #define HPC3_SDCFG_HW 0x01000 /* Enable 16-bit halfword DMA accesses to scsi */ #define HPC3_SDCFG_SWAP 0x02000 /* Byte swap all DMA accesses */ #define HPC3_SDCFG_EPAR 0x04000 /* Enable parity checking for DMA */ #define HPC3_SDCFG_POLL 0x08000 /* hd_dreq polarity control */ #define HPC3_SDCFG_ERLY 0x30000 /* hd_dreq behavior control bits */ hpcreg pconfig; /* PIO configuration register */ #define HPC3_SPCFG_P3 0x0003 /* Cycles to spend in P3 state */ #define HPC3_SPCFG_P2W 0x001c /* Cycles to spend in P2 state for writes */ #define HPC3_SPCFG_P2R 0x01e0 /* Cycles to spend in P2 state for reads */ #define HPC3_SPCFG_P1 0x0e00 /* Cycles to spend in P1 state */ #define HPC3_SPCFG_HW 0x1000 /* Enable 16-bit halfword PIO accesses to scsi */ #define HPC3_SPCFG_SWAP 0x2000 /* Byte swap all PIO accesses */ #define HPC3_SPCFG_EPAR 0x4000 /* Enable parity checking for PIO */ #define HPC3_SPCFG_FUJI 0x8000 /* Fujitsu scsi controller mode for faster dma/pio */ char _unused2[PAGE_SIZE - (6 * sizeof(hpcreg))]; /* padding */ }; /* SEEQ ethernet HPC3 registers, only one seeq per HPC3. */ struct hpc3_ethregs { /* Receiver registers. */ hpcreg rx_cbptr; /* current dma buffer ptr, diagnostic use only */ hpcreg rx_ndptr; /* next dma descriptor ptr */ char _unused1[PAGE_SIZE - (2 * sizeof(hpcreg))]; /* padding */ hpcreg rx_bcd; /* byte count info */ #define HPC3_ERXBCD_BCNTMSK 0x00003fff /* bytes to be sent to memory */ #define HPC3_ERXBCD_XIE 0x20000000 /* HPC3 interrupts cpu at end of this buf */ #define HPC3_ERXBCD_EOX 0x80000000 /* flags this as end of descriptor chain */ hpcreg rx_ctrl; /* control register */ #define HPC3_ERXCTRL_STAT50 0x0000003f /* Receive status reg bits of Seeq8003 */ #define HPC3_ERXCTRL_STAT6 0x00000040 /* Rdonly irq status */ #define HPC3_ERXCTRL_STAT7 0x00000080 /* Rdonlt old/new status bit from Seeq */ #define HPC3_ERXCTRL_ENDIAN 0x00000100 /* Endian for dma channel, little=1 big=0 */ #define HPC3_ERXCTRL_ACTIVE 0x00000200 /* Tells if DMA transfer is in progress */ #define HPC3_ERXCTRL_AMASK 0x00000400 /* Tells if ACTIVE inhibits PIO's to hpc3 */ #define HPC3_ERXCTRL_RBO 0x00000800 /* Receive buffer overflow if set to 1 */ hpcreg rx_gfptr; /* current GIO fifo ptr */ hpcreg rx_dfptr; /* current device fifo ptr */ hpcreg _unused2; /* padding */ hpcreg rx_reset; /* reset register */ #define HPC3_ERXRST_CRESET 0x1 /* Reset dma channel and external controller */ #define HPC3_ERXRST_CLRIRQ 0x2 /* Clear channel interrupt */ #define HPC3_ERXRST_LBACK 0x4 /* Enable diagnostic loopback mode of Seeq8003 */ hpcreg rx_dconfig; /* DMA configuration register */ #define HPC3_ERXDCFG_D1 0x0000f /* Cycles to spend in D1 state for PIO */ #define HPC3_ERXDCFG_D2 0x000f0 /* Cycles to spend in D2 state for PIO */ #define HPC3_ERXDCFG_D3 0x00f00 /* Cycles to spend in D3 state for PIO */ #define HPC3_ERXDCFG_WCTRL 0x01000 /* Enable writes of desc into ex ctrl port */ #define HPC3_ERXDCFG_FRXDC 0x02000 /* Clear eop stat bits upon rxdc, hw seeq fix */ #define HPC3_ERXDCFG_FEOP 0x04000 /* Bad packet marker timeout enable */ #define HPC3_ERXDCFG_FIRQ 0x08000 /* Another bad packet timeout enable */ #define HPC3_ERXDCFG_PTO 0x30000 /* Programmed timeout value for above two */ hpcreg rx_pconfig; /* PIO configuration register */ #define HPC3_ERXPCFG_P1 0x000f /* Cycles to spend in P1 state for PIO */ #define HPC3_ERXPCFG_P2 0x00f0 /* Cycles to spend in P2 state for PIO */ #define HPC3_ERXPCFG_P3 0x0f00 /* Cycles to spend in P3 state for PIO */ #define HPC3_ERXPCFG_TST 0x1000 /* Diagnistic ram test feature bit */ char _unused3[PAGE_SIZE - (8 * sizeof(hpcreg))]; /* padding */ /* Transmitter registers. */ hpcreg tx_cbptr; /* current dma buffer ptr, diagnostic use only */ hpcreg tx_ndptr; /* next dma descriptor ptr */ char _unused4[PAGE_SIZE - (2 * sizeof(hpcreg))]; /* padding */ hpcreg tx_bcd; /* byte count info */ #define HPC3_ETXBCD_BCNTMSK 0x00003fff /* bytes to be read from memory */ #define HPC3_ETXBCD_ESAMP 0x10000000 /* if set, too late to add descriptor */ #define HPC3_ETXBCD_XIE 0x20000000 /* Interrupt cpu at end of cur desc */ #define HPC3_ETXBCD_EOP 0x40000000 /* Last byte of cur buf is end of packet */ #define HPC3_ETXBCD_EOX 0x80000000 /* This buf is the end of desc chain */ hpcreg tx_ctrl; /* control register */ #define HPC3_ETXCTRL_STAT30 0x0000000f /* Rdonly copy of seeq tx stat reg */ #define HPC3_ETXCTRL_STAT4 0x00000010 /* Indicate late collision occurred */ #define HPC3_ETXCTRL_STAT75 0x000000e0 /* Rdonly irq status from seeq */ #define HPC3_ETXCTRL_ENDIAN 0x00000100 /* Dma channel endian mode, 1=little 0=big */ #define HPC3_ETXCTRL_ACTIVE 0x00000200 /* DMA tx channel is active */ #define HPC3_ETXCTRL_AMASK 0x00000400 /* Indicates ACTIVE inhibits PIO's */ hpcreg tx_gfptr; /* current GIO fifo ptr */ hpcreg tx_dfptr; /* current device fifo ptr */ char _unused5[PAGE_SIZE - (4 * sizeof(hpcreg))]; /* padding */ }; struct hpc3_regs { /* First regs for the PBUS 8 dma channels. */ struct hpc3_pbus_dmacregs pbdma[8]; /* Now the HPC scsi registers, we get two scsi reg sets. */ struct hpc3_scsiregs scsi_chan0, scsi_chan1; /* The SEEQ hpc3 ethernet dma/control registers. */ struct hpc3_ethregs ethregs; /* 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 long 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) */