1 files changed, 113 insertions, 0 deletions

diff --git a/arch/m68k/amiga/pcmcia.c b/arch/m68k/amiga/pcmcia.c
new file mode 100644
index 000000000000..fc57c6e72acf
--- /dev/null
+++ b/arch/m68k/amiga/pcmcia.c
@@ -0,0 +1,113 @@
+/*
+** 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;
+}