1 files changed, 107 insertions, 0 deletions

diff --git a/drivers/pcmcia/rsrc_iodyn.c b/drivers/pcmcia/rsrc_iodyn.c
new file mode 100644
index 000000000000..3fa808b582f6
--- /dev/null
+++ b/drivers/pcmcia/rsrc_iodyn.c
@@ -0,0 +1,107 @@
+/*
+ * rsrc_iodyn.c -- Resource management routines for MEM-static sockets.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * The initial developer of the original code is David A. Hinds
+ * <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
+ * are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
+ *
+ * (C) 1999             David A. Hinds
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+
+#include <pcmcia/cs_types.h>
+#include <pcmcia/ss.h>
+#include <pcmcia/cs.h>
+#include <pcmcia/cistpl.h>
+#include "cs_internal.h"
+
+
+struct pcmcia_align_data {
+        unsigned long   mask;
+        unsigned long   offset;
+};
+
+static resource_size_t pcmcia_align(void *align_data,
+                                const struct resource *res,
+                                resource_size_t size, resource_size_t align)
+{
+        struct pcmcia_align_data *data = align_data;
+        resource_size_t start;
+
+        start = (res->start & ~data->mask) + data->offset;
+        if (start < res->start)
+                start += data->mask + 1;
+
+#ifdef CONFIG_X86
+        if (res->flags & IORESOURCE_IO) {
+                if (start & 0x300)
+                        start = (start + 0x3ff) & ~0x3ff;
+        }
+#endif
+
+#ifdef CONFIG_M68K
+        if (res->flags & IORESOURCE_IO) {
+                if ((res->start + size - 1) >= 1024)
+                        start = res->end;
+        }
+#endif
+
+        return start;
+}
+
+
+static int iodyn_adjust_io_region(struct resource *res, unsigned long r_start,
+                unsigned long r_end, struct pcmcia_socket *s)
+{
+        return adjust_resource(res, r_start, r_end - r_start + 1);
+}
+
+
+static struct resource *iodyn_find_io_region(unsigned long base, int num,
+                unsigned long align, struct pcmcia_socket *s)
+{
+        struct resource *res = pcmcia_make_resource(0, num, IORESOURCE_IO,
+                                                dev_name(&s->dev));
+        struct pcmcia_align_data data;
+        unsigned long min = base;
+        int ret;
+
+        if (align == 0)
+                align = 0x10000;
+
+        data.mask = align - 1;
+        data.offset = base & data.mask;
+
+#ifdef CONFIG_PCI
+        if (s->cb_dev) {
+                ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1,
+                                             min, 0, pcmcia_align, &data);
+        } else
+#endif
+                ret = allocate_resource(&ioport_resource, res, num, min, ~0UL,
+                                        1, pcmcia_align, &data);
+
+        if (ret != 0) {
+                kfree(res);
+                res = NULL;
+        }
+        return res;
+}
+
+struct pccard_resource_ops pccard_iodyn_ops = {
+        .validate_mem = NULL,
+        .adjust_io_region = iodyn_adjust_io_region,
+        .find_io = iodyn_find_io_region,
+        .find_mem = NULL,
+        .add_io = NULL,
+        .add_mem = NULL,
+        .init = static_init,
+        .exit = NULL,
+};
+EXPORT_SYMBOL(pccard_iodyn_ops);