[PATCH] pcmcia: properly handle static mem, but dynamic io sockets
[linux-2.6.git] / drivers / pcmcia / rsrc_mgr.c
index b02598a..5146093 100644 (file)
@@ -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 */