fddi: Move the FDDI drivers

Move the FDDI drivers into drivers/net/fddi/ and make the
necessary Kconfig and Makefile changes.

CC: "Maciej W. Rozycki" <macro@linux-mips.org>
CC: Christoph Goos <cgoos@syskonnect.de>
CC: <linux@syskonnect.de>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 269 insertions, 0 deletions

diff --git a/drivers/net/fddi/skfp/hwt.c b/drivers/net/fddi/skfp/hwt.c
new file mode 100644
index 000000000000..c0798fd2ca69
--- /dev/null
+++ b/drivers/net/fddi/skfp/hwt.c
@@ -0,0 +1,269 @@
+/******************************************************************************
+ *
+ *	(C)Copyright 1998,1999 SysKonnect,
+ *	a business unit of Schneider & Koch & Co. Datensysteme GmbH.
+ *
+ *	See the file "skfddi.c" for further information.
+ *
+ *	This program is free software; you can redistribute it and/or modify
+ *	it under the terms of the GNU General Public License as published by
+ *	the Free Software Foundation; either version 2 of the License, or
+ *	(at your option) any later version.
+ *
+ *	The information in this file is provided "AS IS" without warranty.
+ *
+ ******************************************************************************/
+
+/*
+ * Timer Driver for FBI board (timer chip 82C54)
+ */
+
+/*
+ * Modifications:
+ *
+ *	28-Jun-1994 sw	Edit v1.6.
+ *			MCA: Added support for the SK-NET FDDI-FM2 adapter. The
+ *			 following functions have been added(+) or modified(*):
+ *			 hwt_start(*), hwt_stop(*), hwt_restart(*), hwt_read(*)
+ */
+
+#include "h/types.h"
+#include "h/fddi.h"
+#include "h/smc.h"
+
+#ifndef	lint
+static const char ID_sccs[] = "@(#)hwt.c	1.13 97/04/23 (C) SK " ;
+#endif
+
+/*
+ * Prototypes of local functions.
+ */
+/* 28-Jun-1994 sw - Note: hwt_restart() is also used in module 'drvfbi.c'. */
+/*static void hwt_restart() ; */
+
+/************************
+ *
+ *	hwt_start
+ *
+ *	Start hardware timer (clock ticks are 16us).
+ *
+ *	void hwt_start(
+ *		struct s_smc *smc,
+ *		u_long time) ;
+ * In
+ *	smc - A pointer to the SMT Context structure.
+ *
+ *	time - The time in units of 16us to load the timer with.
+ * Out
+ *	Nothing.
+ *
+ ************************/
+#define	HWT_MAX	(65000)
+
+void hwt_start(struct s_smc *smc, u_long time)
+{
+	u_short	cnt ;
+
+	if (time > HWT_MAX)
+		time = HWT_MAX ;
+
+	smc->hw.t_start = time ;
+	smc->hw.t_stop = 0L ;
+
+	cnt = (u_short)time ;
+	/*
+	 * if time < 16 us
+	 *	time = 16 us
+	 */
+	if (!cnt)
+		cnt++ ;
+
+	outpd(ADDR(B2_TI_INI), (u_long) cnt * 200) ;	/* Load timer value. */
+	outpw(ADDR(B2_TI_CRTL), TIM_START) ;		/* Start timer. */
+
+	smc->hw.timer_activ = TRUE ;
+}
+
+/************************
+ *
+ *	hwt_stop
+ *
+ *	Stop hardware timer.
+ *
+ *	void hwt_stop(
+ *		struct s_smc *smc) ;
+ * In
+ *	smc - A pointer to the SMT Context structure.
+ * Out
+ *	Nothing.
+ *
+ ************************/
+void hwt_stop(struct s_smc *smc)
+{
+	outpw(ADDR(B2_TI_CRTL), TIM_STOP) ;
+	outpw(ADDR(B2_TI_CRTL), TIM_CL_IRQ) ;
+
+	smc->hw.timer_activ = FALSE ;
+}
+
+/************************
+ *
+ *	hwt_init
+ *
+ *	Initialize hardware timer.
+ *
+ *	void hwt_init(
+ *		struct s_smc *smc) ;
+ * In
+ *	smc - A pointer to the SMT Context structure.
+ * Out
+ *	Nothing.
+ *
+ ************************/
+void hwt_init(struct s_smc *smc)
+{
+	smc->hw.t_start = 0 ;
+	smc->hw.t_stop	= 0 ;
+	smc->hw.timer_activ = FALSE ;
+
+	hwt_restart(smc) ;
+}
+
+/************************
+ *
+ *	hwt_restart
+ *
+ *	Clear timer interrupt.
+ *
+ *	void hwt_restart(
+ *		struct s_smc *smc) ;
+ * In
+ *	smc - A pointer to the SMT Context structure.
+ * Out
+ *	Nothing.
+ *
+ ************************/
+void hwt_restart(struct s_smc *smc)
+{
+	hwt_stop(smc) ;
+}
+
+/************************
+ *
+ *	hwt_read
+ *
+ *	Stop hardware timer and read time elapsed since last start.
+ *
+ *	u_long hwt_read(smc) ;
+ * In
+ *	smc - A pointer to the SMT Context structure.
+ * Out
+ *	The elapsed time since last start in units of 16us.
+ *
+ ************************/
+u_long hwt_read(struct s_smc *smc)
+{
+	u_short	tr ;
+	u_long	is ;
+
+	if (smc->hw.timer_activ) {
+		hwt_stop(smc) ;
+		tr = (u_short)((inpd(ADDR(B2_TI_VAL))/200) & 0xffff) ;
+
+		is = GET_ISR() ;
+		/* Check if timer expired (or wraparound). */
+		if ((tr > smc->hw.t_start) || (is & IS_TIMINT)) {
+			hwt_restart(smc) ;
+			smc->hw.t_stop = smc->hw.t_start ;
+		}
+		else
+			smc->hw.t_stop = smc->hw.t_start - tr ;
+	}
+	return smc->hw.t_stop;
+}
+
+#ifdef	PCI
+/************************
+ *
+ *	hwt_quick_read
+ *
+ *	Stop hardware timer and read timer value and start the timer again.
+ *
+ *	u_long hwt_read(smc) ;
+ * In
+ *	smc - A pointer to the SMT Context structure.
+ * Out
+ *	current timer value in units of 80ns.
+ *
+ ************************/
+u_long hwt_quick_read(struct s_smc *smc)
+{
+	u_long interval ;
+	u_long time ;
+
+	interval = inpd(ADDR(B2_TI_INI)) ;
+	outpw(ADDR(B2_TI_CRTL), TIM_STOP) ;
+	time = inpd(ADDR(B2_TI_VAL)) ;
+	outpd(ADDR(B2_TI_INI),time) ;
+	outpw(ADDR(B2_TI_CRTL), TIM_START) ;
+	outpd(ADDR(B2_TI_INI),interval) ;
+
+	return time;
+}
+
+/************************
+ *
+ *	hwt_wait_time(smc,start,duration)
+ *
+ *	This function returnes after the amount of time is elapsed
+ *	since the start time.
+ * 
+ * para	start		start time
+ *	duration	time to wait
+ *
+ * NOTE: The function will return immediately, if the timer is not
+ *	 started
+ ************************/
+void hwt_wait_time(struct s_smc *smc, u_long start, long int duration)
+{
+	long	diff ;
+	long	interval ;
+	int	wrapped ;
+
+	/*
+	 * check if timer is running
+	 */
+	if (smc->hw.timer_activ == FALSE ||
+		hwt_quick_read(smc) == hwt_quick_read(smc)) {
+		return ;
+	}
+
+	interval = inpd(ADDR(B2_TI_INI)) ;
+	if (interval > duration) {
+		do {
+			diff = (long)(start - hwt_quick_read(smc)) ;
+			if (diff < 0) {
+				diff += interval ;
+			}
+		} while (diff <= duration) ;
+	}
+	else {
+		diff = interval ;
+		wrapped = 0 ;
+		do {
+			if (!wrapped) {
+				if (hwt_quick_read(smc) >= start) {
+					diff += interval ;
+					wrapped = 1 ;
+				}
+			}
+			else {
+				if (hwt_quick_read(smc) < start) {
+					wrapped = 0 ;
+				}
+			}
+		} while (diff <= duration) ;
+	}
+}
+#endif
+