JFIF$        dd7 

Viewing File: /usr/src/kernels/5.14.0-570.32.1.el9_6.x86_64/include/linux/scc.h

/* SPDX-License-Identifier: GPL-2.0 */
/* $Id: scc.h,v 1.29 1997/04/02 14:56:45 jreuter Exp jreuter $ */
#ifndef	_SCC_H
#define	_SCC_H

#include <uapi/linux/scc.h>


enum {TX_OFF, TX_ON};	/* command for scc_key_trx() */

/* Vector masks in RR2B */

#define VECTOR_MASK	0x06
#define TXINT		0x00
#define EXINT		0x02
#define RXINT		0x04
#define SPINT		0x06

#ifdef CONFIG_SCC_DELAY
#define Inb(port)	inb_p(port)
#define Outb(port, val)	outb_p(val, port)
#else
#define Inb(port)	inb(port)
#define Outb(port, val)	outb(val, port)
#endif

/* SCC channel control structure for KISS */

struct scc_kiss {
	unsigned char txdelay;		/* Transmit Delay 10 ms/cnt */
	unsigned char persist;		/* Persistence (0-255) as a % */
	unsigned char slottime;		/* Delay to wait on persistence hit */
	unsigned char tailtime;		/* Delay after last byte written */
	unsigned char fulldup;		/* Full Duplex mode 0=CSMA 1=DUP 2=ALWAYS KEYED */
	unsigned char waittime;		/* Waittime before any transmit attempt */
	unsigned int  maxkeyup;		/* Maximum time to transmit (seconds) */
	unsigned int  mintime;		/* Minimal offtime after MAXKEYUP timeout (seconds) */
	unsigned int  idletime;		/* Maximum idle time in ALWAYS KEYED mode (seconds) */
	unsigned int  maxdefer;		/* Timer for CSMA channel busy limit */
	unsigned char tx_inhibit;	/* Transmit is not allowed when set */	
	unsigned char group;		/* Group ID for AX.25 TX interlocking */
	unsigned char mode;		/* 'normal' or 'hwctrl' mode (unused) */
	unsigned char softdcd;		/* Use DPLL instead of DCD pin for carrier detect */
};


/* SCC channel structure */

struct scc_channel {
	int init;			/* channel exists? */

	struct net_device *dev;		/* link to device control structure */
	struct net_device_stats dev_stat;/* device statistics */

	char brand;			/* manufacturer of the board */
	long clock;			/* used clock */

	io_port ctrl;			/* I/O address of CONTROL register */
	io_port	data;			/* I/O address of DATA register */
	io_port special;		/* I/O address of special function port */
	int irq;			/* Number of Interrupt */

	char option;
	char enhanced;			/* Enhanced SCC support */

	unsigned char wreg[16]; 	/* Copy of last written value in WRx */
	unsigned char status;		/* Copy of R0 at last external interrupt */
	unsigned char dcd;		/* DCD status */

        struct scc_kiss kiss;		/* control structure for KISS params */
        struct scc_stat stat;		/* statistical information */
        struct scc_modem modem; 	/* modem information */

        struct sk_buff_head tx_queue;	/* next tx buffer */
        struct sk_buff *rx_buff;	/* pointer to frame currently received */
        struct sk_buff *tx_buff;	/* pointer to frame currently transmitted */

	/* Timer */
	struct timer_list tx_t;		/* tx timer for this channel */
	struct timer_list tx_wdog;	/* tx watchdogs */
	
	/* Channel lock */
	spinlock_t	lock;		/* Channel guard lock */
};

#endif /* defined(_SCC_H) */
Back to Directory  nL+D550H?Mx ,D"v]qv;6*Zqn)ZP0!1 A "#a$2Qr D8 a Ri[f\mIykIw0cuFcRı?lO7к_f˓[C$殷WF<_W ԣsKcëIzyQy/_LKℂ;C",pFA:/]=H  ~,ls/9ć:[=/#f;)x{ٛEQ )~ =𘙲r*2~ a _V=' kumFD}KYYC)({ *g&f`툪ry`=^cJ.I](*`wq1dđ#̩͑0;H]u搂@:~וKL Nsh}OIR*8:2 !lDJVo(3=M(zȰ+i*NAr6KnSl)!JJӁ* %݉?|D}d5:eP0R;{$X'xF@.ÊB {,WJuQɲRI;9QE琯62fT.DUJ;*cP A\ILNj!J۱+O\͔]ޒS߼Jȧc%ANolՎprULZԛerE2=XDXgVQeӓk yP7U*omQIs,K`)6\G3t?pgjrmۛجwluGtfh9uyP0D;Uڽ"OXlif$)&|ML0Zrm1[HXPlPR0'G=i2N+0e2]]9VTPO׮7h(F*癈'=QVZDF,d߬~TX G[`le69CR(!S2!P <0x<!1AQ "Raq02Br#SCTb ?Ζ"]mH5WR7k.ۛ!}Q~+yԏz|@T20S~Kek *zFf^2X*(@8r?CIuI|֓>^ExLgNUY+{.RѪ τV׸YTD I62'8Y27'\TP.6d&˦@Vqi|8-OΕ]ʔ U=TL8=;6c| !qfF3aů&~$l}'NWUs$Uk^SV:U# 6w++s&r+nڐ{@29 gL u"TÙM=6(^"7r}=6YݾlCuhquympǦ GjhsǜNlɻ}o7#S6aw4!OSrD57%|?x>L |/nD6?/8w#[)L7+6〼T ATg!%5MmZ/c-{1_Je"|^$'O&ޱմTrb$w)R$& N1EtdU3Uȉ1pM"N*(DNyd96.(jQ)X 5cQɎMyW?Q*!R>6=7)Xj5`J]e8%t!+'!1Q5 !1 AQaqё#2"0BRb?Gt^## .llQT $v,,m㵜5ubV =sY+@d{N! dnO<.-B;_wJt6;QJd.Qc%p{ 1,sNDdFHI0ГoXшe黅XۢF:)[FGXƹ/w_cMeD,ʡcc.WDtA$j@:) -# u c1<@ۗ9F)KJ-hpP]_x[qBlbpʖw q"LFGdƶ*s+ډ_Zc"?%t[IP 6J]#=ɺVvvCGsGh1 >)6|ey?Lӣm,4GWUi`]uJVoVDG< SB6ϏQ@ TiUlyOU0kfV~~}SZ@*WUUi##; s/[=!7}"WN]'(L! ~y5g9T̅JkbM' +s:S +B)v@Mj e Cf jE 0Y\QnzG1д~Wo{T9?`Rmyhsy3!HAD]mc1~2LSu7xT;j$`}4->L#vzŏILS ֭T{rjGKC;bpU=-`BsK.SFw4Mq]ZdHS0)tLg