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-rw-r--r--arch/m68k/amiga/pcmcia.c113
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diff --git a/arch/m68k/amiga/pcmcia.c b/arch/m68k/amiga/pcmcia.c
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+/*
+** 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/jiffies.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;
+}