text: /*
   * Copyright (C) 1999, 2000 Ralf Baechle
   * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
   */
  #ifndef _IOC3_H
  #define _IOC3_H
  
  /* SUPERIO uart register map */
  typedef volatile struct ioc3_uartregs {
  	union {
  		volatile u8	rbr;	/* read only, DLAB == 0 */
  		volatile u8	thr;	/* write only, DLAB == 0 */
  		volatile u8	dll;	/* DLAB == 1 */
  	} u1;
  	union {
  		volatile u8	ier;	/* DLAB == 0 */
  		volatile u8	dlm;	/* DLAB == 1 */
  	} u2;
  	union {
  		volatile u8	iir;	/* read only */
  		volatile u8	fcr;	/* write only */
  	} u3;
  	volatile u8	    iu_lcr;
  	volatile u8	    iu_mcr;
  	volatile u8	    iu_lsr;
  	volatile u8	    iu_msr;
  	volatile u8	    iu_scr;
  } ioc3_uregs_t;
  
  #define iu_rbr u1.rbr
  #define iu_thr u1.thr
  #define iu_dll u1.dll
  #define iu_ier u2.ier
  #define iu_dlm u2.dlm
  #define iu_iir u3.iir
  #define iu_fcr u3.fcr
  
  struct ioc3_sioregs {
  	volatile u8		fill[0x141];	/* starts at 0x141 */
  
  	volatile u8		uartc;
  	volatile u8		kbdcg;
  
  	volatile u8		fill0[0x150 - 0x142 - 1];
  
  	volatile u8		pp_data;
  	volatile u8		pp_dsr;
  	volatile u8		pp_dcr;
  
  	volatile u8		fill1[0x158 - 0x152 - 1];
  
  	volatile u8		pp_fifa;
  	volatile u8		pp_cfgb;
  	volatile u8		pp_ecr;
  
  	volatile u8		fill2[0x168 - 0x15a - 1];
  
  	volatile u8		rtcad;
  	volatile u8		rtcdat;
  
  	volatile u8		fill3[0x170 - 0x169 - 1];
  
  	struct ioc3_uartregs    uartb;	/* 0x20170  */
  	struct ioc3_uartregs    uarta;	/* 0x20178  */
  };
  
  /* Register layout of IOC3 in configuration space.  */
  struct ioc3 {
  	volatile u32	pad0[7];	/* 0x00000  */
  	volatile u32	sio_ir;		/* 0x0001c  */
  	volatile u32	sio_ies;	/* 0x00020  */
  	volatile u32	sio_iec;	/* 0x00024  */
  	volatile u32	sio_cr;		/* 0x00028  */
  	volatile u32	int_out;	/* 0x0002c  */
  	volatile u32	mcr;		/* 0x00030  */
  
  	/* General Purpose I/O registers  */
  	volatile u32	gpcr_s;		/* 0x00034  */
  	volatile u32	gpcr_c;		/* 0x00038  */
  	volatile u32	gpdr;		/* 0x0003c  */
  	volatile u32	gppr_0;		/* 0x00040  */
  	volatile u32	gppr_1;		/* 0x00044  */
  	volatile u32	gppr_2;		/* 0x00048  */
  	volatile u32	gppr_3;		/* 0x0004c  */
  	volatile u32	gppr_4;		/* 0x00050  */
  	volatile u32	gppr_5;		/* 0x00054  */
  	volatile u32	gppr_6;		/* 0x00058  */
  	volatile u32	gppr_7;		/* 0x0005c  */
  	volatile u32	gppr_8;		/* 0x00060  */
  	volatile u32	gppr_9;		/* 0x00064  */
  	volatile u32	gppr_10;	/* 0x00068  */
  	volatile u32	gppr_11;	/* 0x0006c  */
  	volatile u32	gppr_12;	/* 0x00070  */
  	volatile u32	gppr_13;	/* 0x00074  */
  	volatile u32	gppr_14;	/* 0x00078  */
  	volatile u32	gppr_15;	/* 0x0007c  */
  
  	/* Parallel Port Registers  */
  	volatile u32	ppbr_h_a;	/* 0x00080  */
  	volatile u32	ppbr_l_a;	/* 0x00084  */
  	volatile u32	ppcr_a;		/* 0x00088  */
  	volatile u32	ppcr;		/* 0x0008c  */
  	volatile u32	ppbr_h_b;	/* 0x00090  */
  	volatile u32	ppbr_l_b;	/* 0x00094  */
  	volatile u32	ppcr_b;		/* 0x00098  */
  
  	/* Keyboard and Mouse Registers  */
  	volatile u32	km_csr;		/* 0x0009c  */
  	volatile u32	k_rd;		/* 0x000a0  */
  	volatile u32	m_rd;		/* 0x000a4  */
  	volatile u32	k_wd;		/* 0x000a8  */
  	volatile u32	m_wd;		/* 0x000ac  */
  
  	/* Serial Port Registers  */
  	volatile u32	sbbr_h;		/* 0x000b0  */
  	volatile u32	sbbr_l;		/* 0x000b4  */
  	volatile u32	sscr_a;		/* 0x000b8  */
  	volatile u32	stpir_a;	/* 0x000bc  */
  	volatile u32	stcir_a;	/* 0x000c0  */
  	volatile u32	srpir_a;	/* 0x000c4  */
  	volatile u32	srcir_a;	/* 0x000c8  */
  	volatile u32	srtr_a;		/* 0x000cc  */
  	volatile u32	shadow_a;	/* 0x000d0  */
  	volatile u32	sscr_b;		/* 0x000d4  */
  	volatile u32	stpir_b;	/* 0x000d8  */
  	volatile u32	stcir_b;	/* 0x000dc  */
  	volatile u32	srpir_b;	/* 0x000e0  */
  	volatile u32	srcir_b;	/* 0x000e4  */
  	volatile u32	srtr_b;		/* 0x000e8  */
  	volatile u32	shadow_b;	/* 0x000ec  */
  
  	/* Ethernet Registers  */
  	volatile u32	emcr;		/* 0x000f0  */
  	volatile u32	eisr;		/* 0x000f4  */
  	volatile u32	eier;		/* 0x000f8  */
  	volatile u32	ercsr;		/* 0x000fc  */
  	volatile u32	erbr_h;		/* 0x00100  */
  	volatile u32	erbr_l;		/* 0x00104  */
  	volatile u32	erbar;		/* 0x00108  */
  	volatile u32	ercir;		/* 0x0010c  */
  	volatile u32	erpir;		/* 0x00110  */
  	volatile u32	ertr;		/* 0x00114  */
  	volatile u32	etcsr;		/* 0x00118  */
  	volatile u32	ersr;		/* 0x0011c  */
  	volatile u32	etcdc;		/* 0x00120  */
  	volatile u32	ebir;		/* 0x00124  */
  	volatile u32	etbr_h;		/* 0x00128  */
  	volatile u32	etbr_l;		/* 0x0012c  */
  	volatile u32	etcir;		/* 0x00130  */
  	volatile u32	etpir;		/* 0x00134  */
  	volatile u32	emar_h;		/* 0x00138  */
  	volatile u32	emar_l;		/* 0x0013c  */
  	volatile u32	ehar_h;		/* 0x00140  */
  	volatile u32	ehar_l;		/* 0x00144  */
  	volatile u32	micr;		/* 0x00148  */
  	volatile u32	midr_r;		/* 0x0014c  */
  	volatile u32	midr_w;		/* 0x00150  */
  	volatile u32	pad1[(0x20000 - 0x00154) / 4];
  
  	struct ioc3_sioregs	sregs;	/* 0x20000 */
  	volatile u32	pad2[(0x40000 - 0x20180) / 4];
  
  	/* SSRAM Diagnostic Access */
  	volatile u32	ssram[(0x80000 - 0x40000) / 4];
  
  	/* Bytebus device offsets
  	   0x80000 -   Access to the generic devices selected with   DEV0
  	   0x9FFFF     bytebus DEV_SEL_0
  	   0xA0000 -   Access to the generic devices selected with   DEV1
  	   0xBFFFF     bytebus DEV_SEL_1
  	   0xC0000 -   Access to the generic devices selected with   DEV2
  	   0xDFFFF     bytebus DEV_SEL_2
  	   0xE0000 -   Access to the generic devices selected with   DEV3
  	   0xFFFFF     bytebus DEV_SEL_3  */
  };
  
  /*
   * Ethernet RX Buffer
   */
  struct ioc3_erxbuf {
  	u32	w0;			/* first word (valid,bcnt,cksum) */
  	u32	err;			/* second word various errors */
  	/* next comes n bytes of padding */
  	/* then the received ethernet frame itself */
  };
  
  #define ERXBUF_IPCKSUM_MASK	0x0000ffff
  #define ERXBUF_BYTECNT_MASK	0x07ff0000
  #define ERXBUF_BYTECNT_SHIFT	16
  #define ERXBUF_V		0x80000000
  
  #define ERXBUF_CRCERR		0x00000001	/* aka RSV15 */
  #define ERXBUF_FRAMERR		0x00000002	/* aka RSV14 */
  #define ERXBUF_CODERR		0x00000004	/* aka RSV13 */
  #define ERXBUF_INVPREAMB	0x00000008	/* aka RSV18 */
  #define ERXBUF_LOLEN		0x00007000	/* aka RSV2_0 */
  #define ERXBUF_HILEN		0x03ff0000	/* aka RSV12_3 */
  #define ERXBUF_MULTICAST	0x04000000	/* aka RSV16 */
  #define ERXBUF_BROADCAST	0x08000000	/* aka RSV17 */
  #define ERXBUF_LONGEVENT	0x10000000	/* aka RSV19 */
  #define ERXBUF_BADPKT		0x20000000	/* aka RSV20 */
  #define ERXBUF_GOODPKT		0x40000000	/* aka RSV21 */
  #define ERXBUF_CARRIER		0x80000000	/* aka RSV22 */
  
  /*
   * Ethernet TX Descriptor
   */
  #define ETXD_DATALEN    104
  struct ioc3_etxd {
  	u32	cmd;				/* command field */
  	u32	bufcnt;				/* buffer counts field */
  	u64	p1;				/* buffer pointer 1 */
  	u64	p2;				/* buffer pointer 2 */
  	u8	data[ETXD_DATALEN];		/* opt. tx data */
  };
  
  #define ETXD_BYTECNT_MASK	0x000007ff	/* total byte count */
  #define ETXD_INTWHENDONE	0x00001000	/* intr when done */
  #define ETXD_D0V		0x00010000	/* data 0 valid */
  #define ETXD_B1V		0x00020000	/* buf 1 valid */
  #define ETXD_B2V		0x00040000	/* buf 2 valid */
  #define ETXD_DOCHECKSUM		0x00080000	/* insert ip cksum */
  #define ETXD_CHKOFF_MASK	0x07f00000	/* cksum byte offset */
  #define ETXD_CHKOFF_SHIFT	20
  
  #define ETXD_D0CNT_MASK		0x0000007f
  #define ETXD_B1CNT_MASK		0x0007ff00
  #define ETXD_B1CNT_SHIFT	8
  #define ETXD_B2CNT_MASK		0x7ff00000
  #define ETXD_B2CNT_SHIFT	20
  
  /*
   * Bytebus device space
   */
  #define IOC3_BYTEBUS_DEV0	0x80000L
  #define IOC3_BYTEBUS_DEV1	0xa0000L
  #define IOC3_BYTEBUS_DEV2	0xc0000L
  #define IOC3_BYTEBUS_DEV3	0xe0000L
  
  /* ------------------------------------------------------------------------- */
  
  /* Superio Registers (PIO Access) */
  #define IOC3_SIO_BASE		0x20000
  #define IOC3_SIO_UARTC		(IOC3_SIO_BASE+0x141)	/* UART Config */
  #define IOC3_SIO_KBDCG		(IOC3_SIO_BASE+0x142)	/* KBD Config */
  #define IOC3_SIO_PP_BASE	(IOC3_SIO_BASE+PP_BASE)		/* Parallel Port */
  #define IOC3_SIO_RTC_BASE	(IOC3_SIO_BASE+0x168)	/* Real Time Clock */
  #define IOC3_SIO_UB_BASE	(IOC3_SIO_BASE+UARTB_BASE)	/* UART B */
  #define IOC3_SIO_UA_BASE	(IOC3_SIO_BASE+UARTA_BASE)	/* UART A */
  
  /* SSRAM Diagnostic Access */
  #define IOC3_SSRAM	IOC3_RAM_OFF	/* base of SSRAM diagnostic access */
  #define IOC3_SSRAM_LEN	0x40000 /* 256kb (address space size, may not be fully populated) */
  #define IOC3_SSRAM_DM	0x0000ffff	/* data mask */
  #define IOC3_SSRAM_PM	0x00010000	/* parity mask */
  
  /* bitmasks for PCI_SCR */
  #define PCI_SCR_PAR_RESP_EN	0x00000040	/* enb PCI parity checking */
  #define PCI_SCR_SERR_EN		0x00000100	/* enable the SERR# driver */
  #define PCI_SCR_DROP_MODE_EN	0x00008000	/* drop pios on parity err */
  #define PCI_SCR_RX_SERR		(0x1 << 16)
  #define PCI_SCR_DROP_MODE	(0x1 << 17)
  #define PCI_SCR_SIG_PAR_ERR	(0x1 << 24)
  #define PCI_SCR_SIG_TAR_ABRT	(0x1 << 27)
  #define PCI_SCR_RX_TAR_ABRT	(0x1 << 28)
  #define PCI_SCR_SIG_MST_ABRT	(0x1 << 29)
  #define PCI_SCR_SIG_SERR	(0x1 << 30)
  #define PCI_SCR_PAR_ERR		(0x1 << 31)
  
  /* bitmasks for IOC3_KM_CSR */
  #define KM_CSR_K_WRT_PEND 0x00000001	/* kbd port xmitting or resetting */
  #define KM_CSR_M_WRT_PEND 0x00000002	/* mouse port xmitting or resetting */
  #define KM_CSR_K_LCB	  0x00000004	/* Line Cntrl Bit for last KBD write */
  #define KM_CSR_M_LCB	  0x00000008	/* same for mouse */
  #define KM_CSR_K_DATA	  0x00000010	/* state of kbd data line */
  #define KM_CSR_K_CLK	  0x00000020	/* state of kbd clock line */
  #define KM_CSR_K_PULL_DATA 0x00000040	/* pull kbd data line low */
  #define KM_CSR_K_PULL_CLK 0x00000080	/* pull kbd clock line low */
  #define KM_CSR_M_DATA	  0x00000100	/* state of ms data line */
  #define KM_CSR_M_CLK	  0x00000200	/* state of ms clock line */
  #define KM_CSR_M_PULL_DATA 0x00000400	/* pull ms data line low */
  #define KM_CSR_M_PULL_CLK 0x00000800	/* pull ms clock line low */
  #define KM_CSR_EMM_MODE	  0x00001000	/* emulation mode */
  #define KM_CSR_SIM_MODE	  0x00002000	/* clock X8 */
  #define KM_CSR_K_SM_IDLE  0x00004000	/* Keyboard is idle */
  #define KM_CSR_M_SM_IDLE  0x00008000	/* Mouse is idle */
  #define KM_CSR_K_TO	  0x00010000	/* Keyboard trying to send/receive */
  #define KM_CSR_M_TO	  0x00020000	/* Mouse trying to send/receive */
  #define KM_CSR_K_TO_EN	  0x00040000	/* KM_CSR_K_TO + KM_CSR_K_TO_EN = cause
  					   SIO_IR to assert */
  #define KM_CSR_M_TO_EN	  0x00080000	/* KM_CSR_M_TO + KM_CSR_M_TO_EN = cause
  					   SIO_IR to assert */
  #define KM_CSR_K_CLAMP_ONE	0x00100000	/* Pull K_CLK low after rec. one char */
  #define KM_CSR_M_CLAMP_ONE	0x00200000	/* Pull M_CLK low after rec. one char */
  #define KM_CSR_K_CLAMP_THREE	0x00400000	/* Pull K_CLK low after rec. three chars */
  #define KM_CSR_M_CLAMP_THREE	0x00800000	/* Pull M_CLK low after rec. three char */
  
  /* bitmasks for IOC3_K_RD and IOC3_M_RD */
  #define KM_RD_DATA_2	0x000000ff	/* 3rd char recvd since last read */
  #define KM_RD_DATA_2_SHIFT 0
  #define KM_RD_DATA_1	0x0000ff00	/* 2nd char recvd since last read */
  #define KM_RD_DATA_1_SHIFT 8
  #define KM_RD_DATA_0	0x00ff0000	/* 1st char recvd since last read */
  #define KM_RD_DATA_0_SHIFT 16
  #define KM_RD_FRAME_ERR_2 0x01000000	/*  framing or parity error in byte 2 */
  #define KM_RD_FRAME_ERR_1 0x02000000	/* same for byte 1 */
  #define KM_RD_FRAME_ERR_0 0x04000000	/* same for byte 0 */
  
  #define KM_RD_KBD_MSE	0x08000000	/* 0 if from kbd, 1 if from mouse */
  #define KM_RD_OFLO	0x10000000	/* 4th char recvd before this read */
  #define KM_RD_VALID_2	0x20000000	/* DATA_2 valid */
  #define KM_RD_VALID_1	0x40000000	/* DATA_1 valid */
  #define KM_RD_VALID_0	0x80000000	/* DATA_0 valid */
  #define KM_RD_VALID_ALL (KM_RD_VALID_0|KM_RD_VALID_1|KM_RD_VALID_2)
  
  /* bitmasks for IOC3_K_WD & IOC3_M_WD */
  #define KM_WD_WRT_DATA	0x000000ff	/* write to keyboard/mouse port */
  #define KM_WD_WRT_DATA_SHIFT 0
  
  /* bitmasks for serial RX status byte */
  #define RXSB_OVERRUN	0x01	/* char(s) lost */
  #define RXSB_PAR_ERR	0x02	/* parity error */
  #define RXSB_FRAME_ERR	0x04	/* framing error */
  #define RXSB_BREAK	0x08	/* break character */
  #define RXSB_CTS	0x10	/* state of CTS */
  #define RXSB_DCD	0x20	/* state of DCD */
  #define RXSB_MODEM_VALID 0x40	/* DCD, CTS and OVERRUN are valid */
  #define RXSB_DATA_VALID 0x80	/* data byte, FRAME_ERR PAR_ERR & BREAK valid */
  
  /* bitmasks for serial TX control byte */
  #define TXCB_INT_WHEN_DONE 0x20 /* interrupt after this byte is sent */
  #define TXCB_INVALID	0x00	/* byte is invalid */
  #define TXCB_VALID	0x40	/* byte is valid */
  #define TXCB_MCR	0x80	/* data<7:0> to modem control register */
  #define TXCB_DELAY	0xc0	/* delay data<7:0> mSec */
  
  /* bitmasks for IOC3_SBBR_L */
  #define SBBR_L_SIZE	0x00000001	/* 0 == 1KB rings, 1 == 4KB rings */
  #define SBBR_L_BASE	0xfffff000	/* lower serial ring base addr */
  
  /* bitmasks for IOC3_SSCR_<A:B> */
  #define SSCR_RX_THRESHOLD 0x000001ff	/* hiwater mark */
  #define SSCR_TX_TIMER_BUSY 0x00010000	/* TX timer in progress */
  #define SSCR_HFC_EN	0x00020000	/* hardware flow control enabled */
  #define SSCR_RX_RING_DCD 0x00040000	/* post RX record on delta-DCD */
  #define SSCR_RX_RING_CTS 0x00080000	/* post RX record on delta-CTS */
  #define SSCR_HIGH_SPD	0x00100000	/* 4X speed */
  #define SSCR_DIAG	0x00200000	/* bypass clock divider for sim */
  #define SSCR_RX_DRAIN	0x08000000	/* drain RX buffer to memory */
  #define SSCR_DMA_EN	0x10000000	/* enable ring buffer DMA */
  #define SSCR_DMA_PAUSE	0x20000000	/* pause DMA */
  #define SSCR_PAUSE_STATE 0x40000000	/* sets when PAUSE takes effect */
  #define SSCR_RESET	0x80000000	/* reset DMA channels */
  
  /* all producer/comsumer pointers are the same bitfield */
  #define PROD_CONS_PTR_4K 0x00000ff8	/* for 4K buffers */
  #define PROD_CONS_PTR_1K 0x000003f8	/* for 1K buffers */
  #define PROD_CONS_PTR_OFF 3
  
  /* bitmasks for IOC3_SRCIR_<A:B> */
  #define SRCIR_ARM	0x80000000	/* arm RX timer */
  
  /* bitmasks for IOC3_SRPIR_<A:B> */
  #define SRPIR_BYTE_CNT	0x07000000	/* bytes in packer */
  #define SRPIR_BYTE_CNT_SHIFT 24
  
  /* bitmasks for IOC3_STCIR_<A:B> */
  #define STCIR_BYTE_CNT	0x0f000000	/* bytes in unpacker */
  #define STCIR_BYTE_CNT_SHIFT 24
  
  /* bitmasks for IOC3_SHADOW_<A:B> */
  #define SHADOW_DR	0x00000001	/* data ready */
  #define SHADOW_OE	0x00000002	/* overrun error */
  #define SHADOW_PE	0x00000004	/* parity error */
  #define SHADOW_FE	0x00000008	/* framing error */
  #define SHADOW_BI	0x00000010	/* break interrupt */
  #define SHADOW_THRE	0x00000020	/* transmit holding register empty */
  #define SHADOW_TEMT	0x00000040	/* transmit shift register empty */
  #define SHADOW_RFCE	0x00000080	/* char in RX fifo has an error */
  #define SHADOW_DCTS	0x00010000	/* delta clear to send */
  #define SHADOW_DDCD	0x00080000	/* delta data carrier detect */
  #define SHADOW_CTS	0x00100000	/* clear to send */
  #define SHADOW_DCD	0x00800000	/* data carrier detect */
  #define SHADOW_DTR	0x01000000	/* data terminal ready */
  #define SHADOW_RTS	0x02000000	/* request to send */
  #define SHADOW_OUT1	0x04000000	/* 16550 OUT1 bit */
  #define SHADOW_OUT2	0x08000000	/* 16550 OUT2 bit */
  #define SHADOW_LOOP	0x10000000	/* loopback enabled */
  
  /* bitmasks for IOC3_SRTR_<A:B> */
  #define SRTR_CNT	0x00000fff	/* reload value for RX timer */
  #define SRTR_CNT_VAL	0x0fff0000	/* current value of RX timer */
  #define SRTR_CNT_VAL_SHIFT 16
  #define SRTR_HZ		16000	/* SRTR clock frequency */
  
  /* bitmasks for IOC3_SIO_IR, IOC3_SIO_IEC and IOC3_SIO_IES  */
  #define SIO_IR_SA_TX_MT		0x00000001	/* Serial port A TX empty */
  #define SIO_IR_SA_RX_FULL	0x00000002	/* port A RX buf full */
  #define SIO_IR_SA_RX_HIGH	0x00000004	/* port A RX hiwat */
  #define SIO_IR_SA_RX_TIMER	0x00000008	/* port A RX timeout */
  #define SIO_IR_SA_DELTA_DCD	0x00000010	/* port A delta DCD */
  #define SIO_IR_SA_DELTA_CTS	0x00000020	/* port A delta CTS */
  #define SIO_IR_SA_INT		0x00000040	/* port A pass-thru intr */
  #define SIO_IR_SA_TX_EXPLICIT	0x00000080	/* port A explicit TX thru */
  #define SIO_IR_SA_MEMERR	0x00000100	/* port A PCI error */
  #define SIO_IR_SB_TX_MT		0x00000200	/* */
  #define SIO_IR_SB_RX_FULL	0x00000400	/* */
  #define SIO_IR_SB_RX_HIGH	0x00000800	/* */
  #define SIO_IR_SB_RX_TIMER	0x00001000	/* */
  #define SIO_IR_SB_DELTA_DCD	0x00002000	/* */
  #define SIO_IR_SB_DELTA_CTS	0x00004000	/* */
  #define SIO_IR_SB_INT		0x00008000	/* */
  #define SIO_IR_SB_TX_EXPLICIT	0x00010000	/* */
  #define SIO_IR_SB_MEMERR	0x00020000	/* */
  #define SIO_IR_PP_INT		0x00040000	/* P port pass-thru intr */
  #define SIO_IR_PP_INTA		0x00080000	/* PP context A thru */
  #define SIO_IR_PP_INTB		0x00100000	/* PP context B thru */
  #define SIO_IR_PP_MEMERR	0x00200000	/* PP PCI error */
  #define SIO_IR_KBD_INT		0x00400000	/* kbd/mouse intr */
  #define SIO_IR_RT_INT		0x08000000	/* RT output pulse */
  #define SIO_IR_GEN_INT1		0x10000000	/* RT input pulse */
  #define SIO_IR_GEN_INT_SHIFT	28
  
  /* per device interrupt masks */
  #define SIO_IR_SA		(SIO_IR_SA_TX_MT | SIO_IR_SA_RX_FULL | \
  				 SIO_IR_SA_RX_HIGH | SIO_IR_SA_RX_TIMER | \
  				 SIO_IR_SA_DELTA_DCD | SIO_IR_SA_DELTA_CTS | \
  				 SIO_IR_SA_INT | SIO_IR_SA_TX_EXPLICIT | \
  				 SIO_IR_SA_MEMERR)
  #define SIO_IR_SB		(SIO_IR_SB_TX_MT | SIO_IR_SB_RX_FULL | \
  				 SIO_IR_SB_RX_HIGH | SIO_IR_SB_RX_TIMER | \
  				 SIO_IR_SB_DELTA_DCD | SIO_IR_SB_DELTA_CTS | \
  				 SIO_IR_SB_INT | SIO_IR_SB_TX_EXPLICIT | \
  				 SIO_IR_SB_MEMERR)
  #define SIO_IR_PP		(SIO_IR_PP_INT | SIO_IR_PP_INTA | \
  				 SIO_IR_PP_INTB | SIO_IR_PP_MEMERR)
  #define SIO_IR_RT		(SIO_IR_RT_INT | SIO_IR_GEN_INT1)
  
  /* macro to load pending interrupts */
  #define IOC3_PENDING_INTRS(mem) (PCI_INW(&((mem)->sio_ir)) & \
  				 PCI_INW(&((mem)->sio_ies_ro)))
  
  /* bitmasks for SIO_CR */
  #define SIO_CR_SIO_RESET	0x00000001	/* reset the SIO */
  #define SIO_CR_SER_A_BASE	0x000000fe	/* DMA poll addr port A */
  #define SIO_CR_SER_A_BASE_SHIFT 1
  #define SIO_CR_SER_B_BASE	0x00007f00	/* DMA poll addr port B */
  #define SIO_CR_SER_B_BASE_SHIFT 8
  #define SIO_SR_CMD_PULSE	0x00078000	/* byte bus strobe length */
  #define SIO_CR_CMD_PULSE_SHIFT	15
  #define SIO_CR_ARB_DIAG		0x00380000	/* cur !enet PCI requet (ro) */
  #define SIO_CR_ARB_DIAG_TXA	0x00000000
  #define SIO_CR_ARB_DIAG_RXA	0x00080000
  #define SIO_CR_ARB_DIAG_TXB	0x00100000
  #define SIO_CR_ARB_DIAG_RXB	0x00180000
  #define SIO_CR_ARB_DIAG_PP	0x00200000
  #define SIO_CR_ARB_DIAG_IDLE	0x00400000	/* 0 -> active request (ro) */
  
  /* bitmasks for INT_OUT */
  #define INT_OUT_COUNT	0x0000ffff	/* pulse interval timer */
  #define INT_OUT_MODE	0x00070000	/* mode mask */
  #define INT_OUT_MODE_0	0x00000000	/* set output to 0 */
  #define INT_OUT_MODE_1	0x00040000	/* set output to 1 */
  #define INT_OUT_MODE_1PULSE 0x00050000	/* send 1 pulse */
  #define INT_OUT_MODE_PULSES 0x00060000	/* send 1 pulse every interval */
  #define INT_OUT_MODE_SQW 0x00070000	/* toggle output every interval */
  #define INT_OUT_DIAG	0x40000000	/* diag mode */
  #define INT_OUT_INT_OUT 0x80000000	/* current state of INT_OUT */
  
  /* time constants for INT_OUT */
  #define INT_OUT_NS_PER_TICK (30 * 260)	/* 30 ns PCI clock, divisor=260 */
  #define INT_OUT_TICKS_PER_PULSE 3	/* outgoing pulse lasts 3 ticks */
  #define INT_OUT_US_TO_COUNT(x)		/* convert uS to a count value */ \
  	(((x) * 10 + INT_OUT_NS_PER_TICK / 200) *	\
  	 100 / INT_OUT_NS_PER_TICK - 1)
  #define INT_OUT_COUNT_TO_US(x)		/* convert count value to uS */ \
  	(((x) + 1) * INT_OUT_NS_PER_TICK / 1000)
  #define INT_OUT_MIN_TICKS 3	/* min period is width of pulse in "ticks" */
  #define INT_OUT_MAX_TICKS INT_OUT_COUNT		/* largest possible count */
  
  /* bitmasks for GPCR */
  #define GPCR_DIR	0x000000ff	/* tristate pin input or output */
  #define GPCR_DIR_PIN(x) (1<<(x))	/* access one of the DIR bits */
  #define GPCR_EDGE	0x000f0000	/* extint edge or level sensitive */
  #define GPCR_EDGE_PIN(x) (1<<((x)+15))	/* access one of the EDGE bits */
  
  /* values for GPCR */
  #define GPCR_INT_OUT_EN 0x00100000	/* enable INT_OUT to pin 0 */
  #define GPCR_MLAN_EN	0x00200000	/* enable MCR to pin 8 */
  #define GPCR_DIR_SERA_XCVR 0x00000080	/* Port A Transceiver select enable */
  #define GPCR_DIR_SERB_XCVR 0x00000040	/* Port B Transceiver select enable */
  #define GPCR_DIR_PHY_RST   0x00000020	/* ethernet PHY reset enable */
  
  /* defs for some of the generic I/O pins */
  #define GPCR_PHY_RESET		0x20	/* pin is output to PHY reset */
  #define GPCR_UARTB_MODESEL	0x40	/* pin is output to port B mode sel */
  #define GPCR_UARTA_MODESEL	0x80	/* pin is output to port A mode sel */
  
  #define GPPR_PHY_RESET_PIN	5	/* GIO pin controlling phy reset */
  #define GPPR_UARTB_MODESEL_PIN	6	/* GIO pin controlling uart b mode select */
  #define GPPR_UARTA_MODESEL_PIN	7	/* GIO pin controlling uart a mode select */
  
  #define EMCR_DUPLEX		0x00000001
  #define EMCR_PROMISC		0x00000002
  #define EMCR_PADEN		0x00000004
  #define EMCR_RXOFF_MASK		0x000001f8
  #define EMCR_RXOFF_SHIFT	3
  #define EMCR_RAMPAR		0x00000200
  #define EMCR_BADPAR		0x00000800
  #define EMCR_BUFSIZ		0x00001000
  #define EMCR_TXDMAEN		0x00002000
  #define EMCR_TXEN		0x00004000
  #define EMCR_RXDMAEN		0x00008000
  #define EMCR_RXEN		0x00010000
  #define EMCR_LOOPBACK		0x00020000
  #define EMCR_ARB_DIAG		0x001c0000
  #define EMCR_ARB_DIAG_IDLE	0x00200000
  #define EMCR_RST		0x80000000
  
  #define EISR_RXTIMERINT		0x00000001
  #define EISR_RXTHRESHINT	0x00000002
  #define EISR_RXOFLO		0x00000004
  #define EISR_RXBUFOFLO		0x00000008
  #define EISR_RXMEMERR		0x00000010
  #define EISR_RXPARERR		0x00000020
  #define EISR_TXEMPTY		0x00010000
  #define EISR_TXRTRY		0x00020000
  #define EISR_TXEXDEF		0x00040000
  #define EISR_TXLCOL		0x00080000
  #define EISR_TXGIANT		0x00100000
  #define EISR_TXBUFUFLO		0x00200000
  #define EISR_TXEXPLICIT		0x00400000
  #define EISR_TXCOLLWRAP		0x00800000
  #define EISR_TXDEFERWRAP	0x01000000
  #define EISR_TXMEMERR		0x02000000
  #define EISR_TXPARERR		0x04000000
  
  #define ERCSR_THRESH_MASK	0x000001ff	/* enet RX threshold */
  #define ERCSR_RX_TMR		0x40000000	/* simulation only */
  #define ERCSR_DIAG_OFLO		0x80000000	/* simulation only */
  
  #define ERBR_ALIGNMENT		4096
  #define ERBR_L_RXRINGBASE_MASK	0xfffff000
  
  #define ERBAR_BARRIER_BIT	0x0100
  #define ERBAR_RXBARR_MASK	0xffff0000
  #define ERBAR_RXBARR_SHIFT	16
  
  #define ERCIR_RXCONSUME_MASK	0x00000fff
  
  #define ERPIR_RXPRODUCE_MASK	0x00000fff
  #define ERPIR_ARM		0x80000000
  
  #define ERTR_CNT_MASK		0x000007ff
  
  #define ETCSR_IPGT_MASK		0x0000007f
  #define ETCSR_IPGR1_MASK	0x00007f00
  #define ETCSR_IPGR1_SHIFT	8
  #define ETCSR_IPGR2_MASK	0x007f0000
  #define ETCSR_IPGR2_SHIFT	16
  #define ETCSR_NOTXCLK		0x80000000
  
  #define ETCDC_COLLCNT_MASK	0x0000ffff
  #define ETCDC_DEFERCNT_MASK	0xffff0000
  #define ETCDC_DEFERCNT_SHIFT	16
  
  #define ETBR_ALIGNMENT		(64*1024)
  #define ETBR_L_RINGSZ_MASK	0x00000001
  #define ETBR_L_RINGSZ128	0
  #define ETBR_L_RINGSZ512	1
  #define ETBR_L_TXRINGBASE_MASK	0xffffc000
  
  #define ETCIR_TXCONSUME_MASK	0x0000ffff
  #define ETCIR_IDLE		0x80000000
  
  #define ETPIR_TXPRODUCE_MASK	0x0000ffff
  
  #define EBIR_TXBUFPROD_MASK	0x0000001f
  #define EBIR_TXBUFCONS_MASK	0x00001f00
  #define EBIR_TXBUFCONS_SHIFT	8
  #define EBIR_RXBUFPROD_MASK	0x007fc000
  #define EBIR_RXBUFPROD_SHIFT	14
  #define EBIR_RXBUFCONS_MASK	0xff800000
  #define EBIR_RXBUFCONS_SHIFT	23
  
  #define MICR_REGADDR_MASK	0x0000001f
  #define MICR_PHYADDR_MASK	0x000003e0
  #define MICR_PHYADDR_SHIFT	5
  #define MICR_READTRIG		0x00000400
  #define MICR_BUSY		0x00000800
  
  #define MIDR_DATA_MASK		0x0000ffff
  
  #define ERXBUF_IPCKSUM_MASK	0x0000ffff
  #define ERXBUF_BYTECNT_MASK	0x07ff0000
  #define ERXBUF_BYTECNT_SHIFT	16
  #define ERXBUF_V		0x80000000
  
  #define ERXBUF_CRCERR		0x00000001	/* aka RSV15 */
  #define ERXBUF_FRAMERR		0x00000002	/* aka RSV14 */
  #define ERXBUF_CODERR		0x00000004	/* aka RSV13 */
  #define ERXBUF_INVPREAMB	0x00000008	/* aka RSV18 */
  #define ERXBUF_LOLEN		0x00007000	/* aka RSV2_0 */
  #define ERXBUF_HILEN		0x03ff0000	/* aka RSV12_3 */
  #define ERXBUF_MULTICAST	0x04000000	/* aka RSV16 */
  #define ERXBUF_BROADCAST	0x08000000	/* aka RSV17 */
  #define ERXBUF_LONGEVENT	0x10000000	/* aka RSV19 */
  #define ERXBUF_BADPKT		0x20000000	/* aka RSV20 */
  #define ERXBUF_GOODPKT		0x40000000	/* aka RSV21 */
  #define ERXBUF_CARRIER		0x80000000	/* aka RSV22 */
  
  #define ETXD_BYTECNT_MASK	0x000007ff	/* total byte count */
  #define ETXD_INTWHENDONE	0x00001000	/* intr when done */
  #define ETXD_D0V		0x00010000	/* data 0 valid */
  #define ETXD_B1V		0x00020000	/* buf 1 valid */
  #define ETXD_B2V		0x00040000	/* buf 2 valid */
  #define ETXD_DOCHECKSUM		0x00080000	/* insert ip cksum */
  #define ETXD_CHKOFF_MASK	0x07f00000	/* cksum byte offset */
  #define ETXD_CHKOFF_SHIFT	20
  
  #define ETXD_D0CNT_MASK		0x0000007f
  #define ETXD_B1CNT_MASK		0x0007ff00
  #define ETXD_B1CNT_SHIFT	8
  #define ETXD_B2CNT_MASK		0x7ff00000
  #define ETXD_B2CNT_SHIFT	20
  
  typedef enum ioc3_subdevs_e {
      ioc3_subdev_ether,
      ioc3_subdev_generic,
      ioc3_subdev_nic,
      ioc3_subdev_kbms,
      ioc3_subdev_ttya,
      ioc3_subdev_ttyb,
      ioc3_subdev_ecpp,
      ioc3_subdev_rt,
      ioc3_nsubdevs
  } ioc3_subdev_t;
  
  /* subdevice disable bits,
   * from the standard INFO_LBL_SUBDEVS
   */
  #define IOC3_SDB_ETHER		(1<<ioc3_subdev_ether)
  #define IOC3_SDB_GENERIC	(1<<ioc3_subdev_generic)
  #define IOC3_SDB_NIC		(1<<ioc3_subdev_nic)
  #define IOC3_SDB_KBMS		(1<<ioc3_subdev_kbms)
  #define IOC3_SDB_TTYA		(1<<ioc3_subdev_ttya)
  #define IOC3_SDB_TTYB		(1<<ioc3_subdev_ttyb)
  #define IOC3_SDB_ECPP		(1<<ioc3_subdev_ecpp)
  #define IOC3_SDB_RT		(1<<ioc3_subdev_rt)
  
  #define IOC3_ALL_SUBDEVS	((1<<ioc3_nsubdevs)-1)
  
  #define IOC3_SDB_SERIAL		(IOC3_SDB_TTYA|IOC3_SDB_TTYB)
  
  #define IOC3_STD_SUBDEVS	IOC3_ALL_SUBDEVS
  
  #define IOC3_INTA_SUBDEVS	IOC3_SDB_ETHER
  #define IOC3_INTB_SUBDEVS	(IOC3_SDB_GENERIC|IOC3_SDB_KBMS|IOC3_SDB_SERIAL|IOC3_SDB_ECPP|IOC3_SDB_RT)
  
  #endif /* _IOC3_H */
  