drivers/pcmcia/rsrc_mgr.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * rsrc_mgr.c -- Resource management routines and/or wrappers
   4  *
   5  * The initial developer of the original code is David A. Hinds
   6  * <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
   7  * are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
   8  *
   9  * (C) 1999             David A. Hinds
  10  */
  11
  12 #include <linux/slab.h>
  13 #include <linux/module.h>
  14 #include <linux/kernel.h>
  15
  16 #include <pcmcia/ss.h>
  17 #include <pcmcia/cistpl.h>
  18 #include "cs_internal.h"
  19
  20 int static_init(struct pcmcia_socket *s)
  21 {
  22         /* the good thing about SS_CAP_STATIC_MAP sockets is
  23          * that they don't need a resource database */
  24
  25         s->resource_setup_done = 1;
  26
  27         return 0;
  28 }
  29
  30 struct resource *pcmcia_make_resource(resource_size_t start,
  31                                         resource_size_t end,
  32                                         unsigned long flags, const char *name)
  33 {
  34         struct resource *res = kzalloc(sizeof(*res), GFP_KERNEL);
  35
  36         if (res) {
  37                 res->name = name;
  38                 res->start = start;
  39                 res->end = start + end - 1;
  40                 res->flags = flags;
  41         }
  42         return res;
  43 }
  44
  45 static int static_find_io(struct pcmcia_socket *s, unsigned int attr,
  46                         unsigned int *base, unsigned int num,
  47                         unsigned int align, struct resource **parent)
  48 {
  49         if (!s->io_offset)
  50                 return -EINVAL;
  51         *base = s->io_offset | (*base & 0x0fff);
  52         *parent = NULL;
  53
  54         return 0;
  55 }
  56
  57
  58 struct pccard_resource_ops pccard_static_ops = {
  59         .validate_mem = NULL,
  60         .find_io = static_find_io,
  61         .find_mem = NULL,
  62         .init = static_init,
  63         .exit = NULL,
  64 };
  65 EXPORT_SYMBOL(pccard_static_ops);
  66
  67
  68 MODULE_AUTHOR("David A. Hinds, Dominik Brodowski");
  69 MODULE_LICENSE("GPL");
  70 MODULE_ALIAS("rsrc_nonstatic");