1 files changed, 102 insertions, 0 deletions

diff --git a/drivers/pcmcia/rsrc_mgr.c b/drivers/pcmcia/rsrc_mgr.c
index b02598a5a912..514609369836 100644
--- a/drivers/pcmcia/rsrc_mgr.c
+++ b/drivers/pcmcia/rsrc_mgr.c
@@ -166,3 +166,105 @@ struct pccard_resource_ops pccard_static_ops = {
         .exit = NULL,
 };
 EXPORT_SYMBOL(pccard_static_ops);
+
+
+#ifdef CONFIG_PCCARD_IODYN
+
+static struct resource *
+make_resource(unsigned long b, unsigned long n, int flags, char *name)
+{
+        struct resource *res = kzalloc(sizeof(*res), GFP_KERNEL);
+
+        if (res) {
+                res->name = name;
+                res->start = b;
+                res->end = b + n - 1;
+                res->flags = flags;
+        }
+        return res;
+}
+
+struct pcmcia_align_data {
+        unsigned long   mask;
+        unsigned long   offset;
+};
+
+static void pcmcia_align(void *align_data, struct resource *res,
+                        unsigned long size, unsigned long align)
+{
+        struct pcmcia_align_data *data = align_data;
+        unsigned long start;
+
+        start = (res->start & ~data->mask) + data->offset;
+        if (start < res->start)
+                start += data->mask + 1;
+        res->start = start;
+
+#ifdef CONFIG_X86
+        if (res->flags & IORESOURCE_IO) {
+                if (start & 0x300) {
+                        start = (start + 0x3ff) & ~0x3ff;
+                        res->start = start;
+                }
+        }
+#endif
+
+#ifdef CONFIG_M68K
+        if (res->flags & IORESOURCE_IO) {
+                if ((res->start + size - 1) >= 1024)
+                        res->start = res->end;
+        }
+#endif
+}
+
+
+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 = make_resource(0, num, IORESOURCE_IO,
+                                             s->dev.class_id);
+        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,
+        .adjust_resource = NULL,
+        .init = static_init,
+        .exit = NULL,
+};
+EXPORT_SYMBOL(pccard_iodyn_ops);
+
+#endif /* CONFIG_PCCARD_IODYN */