patch-2.3.21 linux/drivers/net/wan/z85230.h

• Lines: 447
• Date: Mon Oct 11 10:13:25 1999
• Orig file: v2.3.20/linux/drivers/net/wan/z85230.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.20/linux/drivers/net/wan/z85230.h linux/drivers/net/wan/z85230.h
@@ -0,0 +1,446 @@
+/*
+ *	Description of Z8530 Z85C30 and Z85230 communications chips
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1998 Alan Cox <alan@redhat.com>
+ */
+
+#ifndef _Z8530_H
+#define _Z8530_H
+
+/* Conversion routines to/from brg time constants from/to bits
+ * per second.
+ */
+#define BRG_TO_BPS(brg, freq) ((freq) / 2 / ((brg) + 2))
+#define BPS_TO_BRG(bps, freq) ((((freq) + (bps)) / (2 * (bps))) - 2)
+
+/* The Zilog register set */
+
+#define	FLAG	0x7e
+
+/* Write Register 0 */
+#define	R0	0		/* Register selects */
+#define	R1	1
+#define	R2	2
+#define	R3	3
+#define	R4	4
+#define	R5	5
+#define	R6	6
+#define	R7	7
+#define	R8	8
+#define	R9	9
+#define	R10	10
+#define	R11	11
+#define	R12	12
+#define	R13	13
+#define	R14	14
+#define	R15	15
+
+#define RPRIME	16		/* Indicate a prime register access on 230 */
+
+#define	NULLCODE	0	/* Null Code */
+#define	POINT_HIGH	0x8	/* Select upper half of registers */
+#define	RES_EXT_INT	0x10	/* Reset Ext. Status Interrupts */
+#define	SEND_ABORT	0x18	/* HDLC Abort */
+#define	RES_RxINT_FC	0x20	/* Reset RxINT on First Character */
+#define	RES_Tx_P	0x28	/* Reset TxINT Pending */
+#define	ERR_RES		0x30	/* Error Reset */
+#define	RES_H_IUS	0x38	/* Reset highest IUS */
+
+#define	RES_Rx_CRC	0x40	/* Reset Rx CRC Checker */
+#define	RES_Tx_CRC	0x80	/* Reset Tx CRC Checker */
+#define	RES_EOM_L	0xC0	/* Reset EOM latch */
+
+/* Write Register 1 */
+
+#define	EXT_INT_ENAB	0x1	/* Ext Int Enable */
+#define	TxINT_ENAB	0x2	/* Tx Int Enable */
+#define	PAR_SPEC	0x4	/* Parity is special condition */
+
+#define	RxINT_DISAB	0	/* Rx Int Disable */
+#define	RxINT_FCERR	0x8	/* Rx Int on First Character Only or Error */
+#define	INT_ALL_Rx	0x10	/* Int on all Rx Characters or error */
+#define	INT_ERR_Rx	0x18	/* Int on error only */
+
+#define	WT_RDY_RT	0x20	/* Wait/Ready on R/T */
+#define	WT_FN_RDYFN	0x40	/* Wait/FN/Ready FN */
+#define	WT_RDY_ENAB	0x80	/* Wait/Ready Enable */
+
+/* Write Register #2 (Interrupt Vector) */
+
+/* Write Register 3 */
+
+#define	RxENABLE	0x1	/* Rx Enable */
+#define	SYNC_L_INH	0x2	/* Sync Character Load Inhibit */
+#define	ADD_SM		0x4	/* Address Search Mode (SDLC) */
+#define	RxCRC_ENAB	0x8	/* Rx CRC Enable */
+#define	ENT_HM		0x10	/* Enter Hunt Mode */
+#define	AUTO_ENAB	0x20	/* Auto Enables */
+#define	Rx5		0x0	/* Rx 5 Bits/Character */
+#define	Rx7		0x40	/* Rx 7 Bits/Character */
+#define	Rx6		0x80	/* Rx 6 Bits/Character */
+#define	Rx8		0xc0	/* Rx 8 Bits/Character */
+
+/* Write Register 4 */
+
+#define	PAR_ENA		0x1	/* Parity Enable */
+#define	PAR_EVEN	0x2	/* Parity Even/Odd* */
+
+#define	SYNC_ENAB	0	/* Sync Modes Enable */
+#define	SB1		0x4	/* 1 stop bit/char */
+#define	SB15		0x8	/* 1.5 stop bits/char */
+#define	SB2		0xc	/* 2 stop bits/char */
+
+#define	MONSYNC		0	/* 8 Bit Sync character */
+#define	BISYNC		0x10	/* 16 bit sync character */
+#define	SDLC		0x20	/* SDLC Mode (01111110 Sync Flag) */
+#define	EXTSYNC		0x30	/* External Sync Mode */
+
+#define	X1CLK		0x0	/* x1 clock mode */
+#define	X16CLK		0x40	/* x16 clock mode */
+#define	X32CLK		0x80	/* x32 clock mode */
+#define	X64CLK		0xC0	/* x64 clock mode */
+
+/* Write Register 5 */
+
+#define	TxCRC_ENAB	0x1	/* Tx CRC Enable */
+#define	RTS		0x2	/* RTS */
+#define	SDLC_CRC	0x4	/* SDLC/CRC-16 */
+#define	TxENAB		0x8	/* Tx Enable */
+#define	SND_BRK		0x10	/* Send Break */
+#define	Tx5		0x0	/* Tx 5 bits (or less)/character */
+#define	Tx7		0x20	/* Tx 7 bits/character */
+#define	Tx6		0x40	/* Tx 6 bits/character */
+#define	Tx8		0x60	/* Tx 8 bits/character */
+#define	DTR		0x80	/* DTR */
+
+/* Write Register 6 (Sync bits 0-7/SDLC Address Field) */
+
+/* Write Register 7 (Sync bits 8-15/SDLC 01111110) */
+
+/* Write Register 8 (transmit buffer) */
+
+/* Write Register 9 (Master interrupt control) */
+#define	VIS	1	/* Vector Includes Status */
+#define	NV	2	/* No Vector */
+#define	DLC	4	/* Disable Lower Chain */
+#define	MIE	8	/* Master Interrupt Enable */
+#define	STATHI	0x10	/* Status high */
+#define	NORESET	0	/* No reset on write to R9 */
+#define	CHRB	0x40	/* Reset channel B */
+#define	CHRA	0x80	/* Reset channel A */
+#define	FHWRES	0xc0	/* Force hardware reset */
+
+/* Write Register 10 (misc control bits) */
+#define	BIT6	1	/* 6 bit/8bit sync */
+#define	LOOPMODE 2	/* SDLC Loop mode */
+#define	ABUNDER	4	/* Abort/flag on SDLC xmit underrun */
+#define	MARKIDLE 8	/* Mark/flag on idle */
+#define	GAOP	0x10	/* Go active on poll */
+#define	NRZ	0	/* NRZ mode */
+#define	NRZI	0x20	/* NRZI mode */
+#define	FM1	0x40	/* FM1 (transition = 1) */
+#define	FM0	0x60	/* FM0 (transition = 0) */
+#define	CRCPS	0x80	/* CRC Preset I/O */
+
+/* Write Register 11 (Clock Mode control) */
+#define	TRxCXT	0	/* TRxC = Xtal output */
+#define	TRxCTC	1	/* TRxC = Transmit clock */
+#define	TRxCBR	2	/* TRxC = BR Generator Output */
+#define	TRxCDP	3	/* TRxC = DPLL output */
+#define	TRxCOI	4	/* TRxC O/I */
+#define	TCRTxCP	0	/* Transmit clock = RTxC pin */
+#define	TCTRxCP	8	/* Transmit clock = TRxC pin */
+#define	TCBR	0x10	/* Transmit clock = BR Generator output */
+#define	TCDPLL	0x18	/* Transmit clock = DPLL output */
+#define	RCRTxCP	0	/* Receive clock = RTxC pin */
+#define	RCTRxCP	0x20	/* Receive clock = TRxC pin */
+#define	RCBR	0x40	/* Receive clock = BR Generator output */
+#define	RCDPLL	0x60	/* Receive clock = DPLL output */
+#define	RTxCX	0x80	/* RTxC Xtal/No Xtal */
+
+/* Write Register 12 (lower byte of baud rate generator time constant) */
+
+/* Write Register 13 (upper byte of baud rate generator time constant) */
+
+/* Write Register 14 (Misc control bits) */
+#define	BRENABL	1	/* Baud rate generator enable */
+#define	BRSRC	2	/* Baud rate generator source */
+#define	DTRREQ	4	/* DTR/Request function */
+#define	AUTOECHO 8	/* Auto Echo */
+#define	LOOPBAK	0x10	/* Local loopback */
+#define	SEARCH	0x20	/* Enter search mode */
+#define	RMC	0x40	/* Reset missing clock */
+#define	DISDPLL	0x60	/* Disable DPLL */
+#define	SSBR	0x80	/* Set DPLL source = BR generator */
+#define	SSRTxC	0xa0	/* Set DPLL source = RTxC */
+#define	SFMM	0xc0	/* Set FM mode */
+#define	SNRZI	0xe0	/* Set NRZI mode */
+
+/* Write Register 15 (external/status interrupt control) */
+#define PRIME	1	/* R5' etc register access (Z85C30/230 only) */
+#define	ZCIE	2	/* Zero count IE */
+#define FIFOE	4	/* Z85230 only */
+#define	DCDIE	8	/* DCD IE */
+#define	SYNCIE	0x10	/* Sync/hunt IE */
+#define	CTSIE	0x20	/* CTS IE */
+#define	TxUIE	0x40	/* Tx Underrun/EOM IE */
+#define	BRKIE	0x80	/* Break/Abort IE */
+
+
+/* Read Register 0 */
+#define	Rx_CH_AV	0x1	/* Rx Character Available */
+#define	ZCOUNT		0x2	/* Zero count */
+#define	Tx_BUF_EMP	0x4	/* Tx Buffer empty */
+#define	DCD		0x8	/* DCD */
+#define	SYNC_HUNT	0x10	/* Sync/hunt */
+#define	CTS		0x20	/* CTS */
+#define	TxEOM		0x40	/* Tx underrun */
+#define	BRK_ABRT	0x80	/* Break/Abort */
+
+/* Read Register 1 */
+#define	ALL_SNT		0x1	/* All sent */
+/* Residue Data for 8 Rx bits/char programmed */
+#define	RES3		0x8	/* 0/3 */
+#define	RES4		0x4	/* 0/4 */
+#define	RES5		0xc	/* 0/5 */
+#define	RES6		0x2	/* 0/6 */
+#define	RES7		0xa	/* 0/7 */
+#define	RES8		0x6	/* 0/8 */
+#define	RES18		0xe	/* 1/8 */
+#define	RES28		0x0	/* 2/8 */
+/* Special Rx Condition Interrupts */
+#define	PAR_ERR		0x10	/* Parity error */
+#define	Rx_OVR		0x20	/* Rx Overrun Error */
+#define	CRC_ERR		0x40	/* CRC/Framing Error */
+#define	END_FR		0x80	/* End of Frame (SDLC) */
+
+/* Read Register 2 (channel b only) - Interrupt vector */
+
+/* Read Register 3 (interrupt pending register) ch a only */
+#define	CHBEXT	0x1		/* Channel B Ext/Stat IP */
+#define	CHBTxIP	0x2		/* Channel B Tx IP */
+#define	CHBRxIP	0x4		/* Channel B Rx IP */
+#define	CHAEXT	0x8		/* Channel A Ext/Stat IP */
+#define	CHATxIP	0x10		/* Channel A Tx IP */
+#define	CHARxIP	0x20		/* Channel A Rx IP */
+
+/* Read Register 8 (receive data register) */
+
+/* Read Register 10  (misc status bits) */
+#define	ONLOOP	2		/* On loop */
+#define	LOOPSEND 0x10		/* Loop sending */
+#define	CLK2MIS	0x40		/* Two clocks missing */
+#define	CLK1MIS	0x80		/* One clock missing */
+
+/* Read Register 12 (lower byte of baud rate generator constant) */
+
+/* Read Register 13 (upper byte of baud rate generator constant) */
+
+/* Read Register 15 (value of WR 15) */
+
+
+/*
+ *	Interrupt handling functions for this SCC
+ */
+
+struct z8530_channel;
+ 
+struct z8530_irqhandler
+{
+	void (*rx)(struct z8530_channel *);
+	void (*tx)(struct z8530_channel *);
+	void (*status)(struct z8530_channel *);
+};
+
+/*
+ *	A channel of the Z8530
+ */
+
+struct z8530_channel
+{
+	struct		z8530_irqhandler *irqs;		/* IRQ handlers */
+	/*
+	 *	Synchronous
+	 */
+	u16		count;		/* Buyes received */
+	u16		max;		/* Most we can receive this frame */
+	u16		mtu;		/* MTU of the device */
+	u8		*dptr;		/* Pointer into rx buffer */
+	struct sk_buff	*skb;		/* Buffer dptr points into */
+	struct sk_buff	*skb2;		/* Pending buffer */
+	u8		status;		/* Current DCD */
+	u8		sync;		/* Set if in sync mode */
+
+	u8		regs[32];	/* Register map for the chip */
+	u8		pendregs[32];	/* Pending register values */
+	
+	struct sk_buff 	*tx_skb;	/* Buffer being transmitted */
+	struct sk_buff  *tx_next_skb;	/* Next transmit buffer */
+	u8		*tx_ptr;	/* Byte pointer into the buffer */
+	u8		*tx_next_ptr;	/* Next pointer to use */
+	u8		*tx_dma_buf[2];	/* TX flip buffers for DMA */
+	u8		tx_dma_used;	/* Flip buffer usage toggler */
+	u16		txcount;	/* Count of bytes to transmit */
+	
+	void		(*rx_function)(struct z8530_channel *, struct sk_buff *);
+	
+	/*
+	 *	Sync DMA
+	 */
+	
+	u8		rxdma;		/* DMA channels */
+	u8		txdma;		
+	u8		rxdma_on;	/* DMA active if flag set */
+	u8		txdma_on;
+	u8		dma_num;	/* Buffer we are DMAing into */
+	u8		dma_ready;	/* Is the other buffer free */
+	u8		dma_tx;		/* TX is to use DMA */
+	u8		*rx_buf[2];	/* The flip buffers */
+	
+	/*
+	 *	System
+	 */
+	 
+	struct z8530_dev *dev;		/* Z85230 chip instance we are from */
+	int		ctrlio;		/* I/O ports */
+	int		dataio;
+
+	/*
+	 *	For PC we encode this way.
+	 */	
+#define Z8530_PORT_SLEEP	0x80000000
+#define Z8530_PORT_OF(x)	((x)&0xFFFF)
+
+	u32		rx_overrun;		/* Overruns - not done yet */
+	u32		rx_crc_err;
+
+	/*
+	 *	Bound device pointers
+	 */
+
+	void		*private;	/* For our owner */
+	struct net_device	*netdevice;	/* Network layer device */
+	struct net_device_stats stats;	/* Network layer statistics */
+
+	/*
+	 *	Async features
+	 */
+
+	struct tty_struct 	*tty;		/* Attached terminal */
+	int			line;		/* Minor number */
+	struct termios		normal_termios;	/* Terminal settings */
+	struct termios		callout_termios;
+	wait_queue_head_t	open_wait;	/* Tasks waiting to open */
+	wait_queue_head_t	close_wait;	/* and for close to end */
+	unsigned long		event;		/* Pending events */
+	int			fdcount;    	/* # of fd on device */
+	int			blocked_open;	/* # of blocked opens */
+	long			session; 	/* Session of opening process */
+	long			pgrp; 		/* pgrp of opening process */
+	int			x_char;		/* XON/XOF char */
+	unsigned char 		*xmit_buf;	/* Transmit pointer */
+	int			xmit_head;	/* Transmit ring */
+	int			xmit_tail;
+	int			xmit_cnt;
+	int			flags;	
+	int			timeout;
+	int			xmit_fifo_size;	/* Transmit FIFO info */
+
+	int			close_delay;	/* Do we wait for drain on close ? */
+	unsigned short		closing_wait;
+
+	/* We need to know the current clock divisor
+	 * to read the bps rate the chip has currently
+	 * loaded.
+	 */
+
+	unsigned char		clk_divisor;  /* May be 1, 16, 32, or 64 */
+	int			zs_baud;
+
+	int			magic;
+	int			baud_base;		/* Baud parameters */
+	int			custom_divisor;
+
+
+	unsigned char		tx_active; /* character is being xmitted */
+	unsigned char		tx_stopped; /* output is suspended */
+};	
+
+/*
+ *	Each Z853x0 device.
+ */	
+ 
+struct z8530_dev
+{
+	char *name;	/* Device instance name */
+	struct z8530_channel chanA;	/* SCC channel A */
+	struct z8530_channel chanB;	/* SCC channel B */
+	int type;
+#define Z8530	0	/* NMOS dinosaur */	
+#define Z85C30	1	/* CMOS - better */
+#define Z85230	2	/* CMOS with real FIFO */
+	int irq;	/* Interrupt for the device */
+	int active;	/* Soft interrupt enable - the Mac doesn't 
+			   always have a hard disable on its 8530s... */
+};
+
+
+/*
+ *	Functions
+ */
+ 
+extern u8 z8530_dead_port[];
+extern u8 z8530_hdlc_kilostream_85230[];
+extern u8 z8530_hdlc_kilostream[];
+extern void z8530_interrupt(int, void *, struct pt_regs *);
+extern void z8530_describe(struct z8530_dev *, char *mapping,int io);
+extern int z8530_init(struct z8530_dev *);
+extern int z8530_shutdown(struct z8530_dev *);
+extern int z8530_sync_open(struct net_device *, struct z8530_channel *);
+extern int z8530_sync_close(struct net_device *, struct z8530_channel *);
+extern int z8530_sync_dma_open(struct net_device *, struct z8530_channel *);
+extern int z8530_sync_dma_close(struct net_device *, struct z8530_channel *);
+extern int z8530_sync_txdma_open(struct net_device *, struct z8530_channel *);
+extern int z8530_sync_txdma_close(struct net_device *, struct z8530_channel *);
+extern int z8530_channel_load(struct z8530_channel *, u8 *);
+extern int z8530_queue_xmit(struct z8530_channel *c, struct sk_buff *skb);
+extern struct net_device_stats *z8530_get_stats(struct z8530_channel *c);
+extern void z8530_null_rx(struct z8530_channel *c, struct sk_buff *skb);
+
+
+/*
+ *	Standard interrupt vector sets
+ */
+ 
+struct z8530_irqhandler z8530_sync, z8530_async, z8530_nop;
+
+/*
+ *	Asynchronous Interfacing
+ */
+
+#define SERIAL_MAGIC 0x5301
+
+/*
+ * The size of the serial xmit buffer is 1 page, or 4096 bytes
+ */
+
+#define SERIAL_XMIT_SIZE 4096
+#define WAKEUP_CHARS	256
+
+/*
+ * Events are used to schedule things to happen at timer-interrupt
+ * time, instead of at rs interrupt time.
+ */
+#define RS_EVENT_WRITE_WAKEUP	0
+
+/* Internal flags used only by kernel/chr_drv/serial.c */
+#define ZILOG_INITIALIZED	0x80000000 /* Serial port was initialized */
+#define ZILOG_CALLOUT_ACTIVE	0x40000000 /* Call out device is active */
+#define ZILOG_NORMAL_ACTIVE	0x20000000 /* Normal device is active */
+#define ZILOG_BOOT_AUTOCONF	0x10000000 /* Autoconfigure port on bootup */
+#define ZILOG_CLOSING		0x08000000 /* Serial port is closing */
+#define ZILOG_CTS_FLOW		0x04000000 /* Do CTS flow control */
+#define ZILOG_CHECK_CD		0x02000000 /* i.e., CLOCAL */
+
+#endif /* !(_Z8530_H) */