/*** asm-m68k/pcmcia.c -- Amiga Linux PCMCIA support**                      most information was found by disassembling card.resource**                      I'm still looking for an official doc !**** Copyright 1997 by Alain Malek**** This file is subject to the terms and conditions of the GNU General Public** License.  See the file COPYING in the main directory of this archive** for more details.**** Created: 12/10/97 by Alain Malek*/#include <linux/types.h>#include <linux/sched.h>#include <linux/timer.h>#include <asm/amigayle.h>#include <asm/amipcmcia.h>/* gayle config byte for program voltage and access speed */static unsigned char cfg_byte = GAYLE_CFG_0V|GAYLE_CFG_150NS;void pcmcia_reset(void){	unsigned long reset_start_time = jiffies;	unsigned char b;	gayle_reset = 0x00;	while (time_before(jiffies, reset_start_time + 1*HZ/100));	b = gayle_reset;}/* copy a tuple, including tuple header. return nb bytes copied *//* be carefull as this may trigger a GAYLE_IRQ_WR interrupt ! */int pcmcia_copy_tuple(unsigned char tuple_id, void *tuple, int max_len){	unsigned char id, *dest;	int cnt, pos, len;	dest = tuple;	pos = 0;	id = gayle_attribute[pos];	while((id != CISTPL_END) && (pos < 0x10000)) {		len = (int)gayle_attribute[pos+2] + 2;		if (id == tuple_id) {			len = (len > max_len)?max_len:len;			for (cnt = 0; cnt < len; cnt++) {				*dest++ = gayle_attribute[pos+(cnt<<1)];			}			return len;		}		pos += len<<1;		id = gayle_attribute[pos];	}	return 0;}void pcmcia_program_voltage(int voltage){	unsigned char v;	switch (voltage) {	case PCMCIA_0V:		v = GAYLE_CFG_0V;		break;	case PCMCIA_5V:		v = GAYLE_CFG_5V;		break;	case PCMCIA_12V:		v = GAYLE_CFG_12V;		break;	default:		v = GAYLE_CFG_0V;	}	cfg_byte = (cfg_byte & 0xfc) | v;	gayle.config = cfg_byte;}void pcmcia_access_speed(int speed){	unsigned char s;	if (speed <= PCMCIA_SPEED_100NS)		s = GAYLE_CFG_100NS;	else if (speed <= PCMCIA_SPEED_150NS)		s = GAYLE_CFG_150NS;	else if (speed <= PCMCIA_SPEED_250NS)		s = GAYLE_CFG_250NS;	else		s = GAYLE_CFG_720NS;	cfg_byte = (cfg_byte & 0xf3) | s;	gayle.config = cfg_byte;}void pcmcia_write_enable(void){	gayle.cardstatus = GAYLE_CS_WR|GAYLE_CS_DA;}void pcmcia_write_disable(void){	gayle.cardstatus = 0;}