1 files changed, 163 insertions, 0 deletions

diff --git a/drivers/pcmcia/rsrc_mgr.c b/drivers/pcmcia/rsrc_mgr.c
new file mode 100644
index 000000000000..b6843f8d300d
--- /dev/null
+++ b/drivers/pcmcia/rsrc_mgr.c
@@ -0,0 +1,163 @@
+/*
+ * rsrc_mgr.c -- Resource management routines and/or wrappers
+ *
+ * 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/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+
+#include <pcmcia/cs_types.h>
+#include <pcmcia/ss.h>
+#include <pcmcia/cs.h>
+#include "cs_internal.h"
+
+
+#ifdef CONFIG_PCMCIA_PROBE
+
+static int adjust_irq(struct pcmcia_socket *s, adjust_t *adj)
+{
+        int irq;
+        u32 mask;
+
+        irq = adj->resource.irq.IRQ;
+        if ((irq < 0) || (irq > 15))
+                return CS_BAD_IRQ;
+
+        if (adj->Action != REMOVE_MANAGED_RESOURCE)
+                return 0;
+
+        mask = 1 << irq;
+
+        if (!(s->irq_mask & mask))
+                return 0;
+
+        s->irq_mask &= ~mask;
+
+        return 0;
+}
+
+#else
+
+static inline int adjust_irq(struct pcmcia_socket *s, adjust_t *adj) {
+        return CS_SUCCESS;
+}
+
+#endif
+
+
+int pcmcia_adjust_resource_info(adjust_t *adj)
+{
+        struct pcmcia_socket *s;
+        int ret = CS_UNSUPPORTED_FUNCTION;
+        unsigned long flags;
+
+        down_read(&pcmcia_socket_list_rwsem);
+        list_for_each_entry(s, &pcmcia_socket_list, socket_list) {
+
+                if (adj->Resource == RES_IRQ)
+                        ret = adjust_irq(s, adj);
+
+                else if (s->resource_ops->adjust_resource) {
+
+                        /* you can't use the old interface if the new
+                         * one was used before */
+                        spin_lock_irqsave(&s->lock, flags);
+                        if ((s->resource_setup_done) &&
+                            !(s->resource_setup_old)) {
+                                spin_unlock_irqrestore(&s->lock, flags);
+                                continue;
+                        } else if (!(s->resource_setup_old))
+                                s->resource_setup_old = 1;
+                        spin_unlock_irqrestore(&s->lock, flags);
+
+                        ret = s->resource_ops->adjust_resource(s, adj);
+                        if (!ret) {
+                                /* as there's no way we know this is the
+                                 * last call to adjust_resource_info, we
+                                 * always need to assume this is the latest
+                                 * one... */
+                                spin_lock_irqsave(&s->lock, flags);
+                                s->resource_setup_done = 1;
+                                spin_unlock_irqrestore(&s->lock, flags);
+                        }
+                }
+        }
+        up_read(&pcmcia_socket_list_rwsem);
+
+        return (ret);
+}
+EXPORT_SYMBOL(pcmcia_adjust_resource_info);
+
+void pcmcia_validate_mem(struct pcmcia_socket *s)
+{
+        if (s->resource_ops->validate_mem)
+                s->resource_ops->validate_mem(s);
+}
+EXPORT_SYMBOL(pcmcia_validate_mem);
+
+int adjust_io_region(struct resource *res, unsigned long r_start,
+                     unsigned long r_end, struct pcmcia_socket *s)
+{
+        if (s->resource_ops->adjust_io_region)
+                return s->resource_ops->adjust_io_region(res, r_start, r_end, s);
+        return -ENOMEM;
+}
+
+struct resource *find_io_region(unsigned long base, int num,
+                   unsigned long align, struct pcmcia_socket *s)
+{
+        if (s->resource_ops->find_io)
+                return s->resource_ops->find_io(base, num, align, s);
+        return NULL;
+}
+
+struct resource *find_mem_region(u_long base, u_long num, u_long align,
+                                 int low, struct pcmcia_socket *s)
+{
+        if (s->resource_ops->find_mem)
+                return s->resource_ops->find_mem(base, num, align, low, s);
+        return NULL;
+}
+
+void release_resource_db(struct pcmcia_socket *s)
+{
+        if (s->resource_ops->exit)
+                s->resource_ops->exit(s);
+}
+
+
+static int static_init(struct pcmcia_socket *s)
+{
+        unsigned long flags;
+
+        /* the good thing about SS_CAP_STATIC_MAP sockets is
+         * that they don't need a resource database */
+
+        spin_lock_irqsave(&s->lock, flags);
+        s->resource_setup_done = 1;
+        spin_unlock_irqrestore(&s->lock, flags);
+
+        return 0;
+}
+
+
+struct pccard_resource_ops pccard_static_ops = {
+        .validate_mem = NULL,
+        .adjust_io_region = NULL,
+        .find_io = NULL,
+        .find_mem = NULL,
+        .adjust_resource = NULL,
+        .init = static_init,
+        .exit = NULL,
+};
+EXPORT_SYMBOL(pccard_static_ops);