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authorDominik Brodowski <linux@dominikbrodowski.net>2008-06-19 19:02:52 +0200
committerDominik Brodowski <linux@dominikbrodowski.net>2008-06-24 15:33:42 +0200
commitc502380170ee93fd1f4028cc1f32efc87fde7376 (patch)
tree3743249953d40aa0f08cc9ae4f7774c8907b3326 /drivers/pcmcia/pcmcia_ioctl.c
parent635416ef393e8cec5a89fc6c1de710ee9596a51e (diff)
pcmcia: carve out ioctl adjust function to pcmcia_ioctl
Let pcmcia_ioctl interact with rsrc_nonstatic using functions which rsrc_nonstatic.c has to use anyway. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'drivers/pcmcia/pcmcia_ioctl.c')
-rw-r--r--drivers/pcmcia/pcmcia_ioctl.c90
1 files changed, 88 insertions, 2 deletions
diff --git a/drivers/pcmcia/pcmcia_ioctl.c b/drivers/pcmcia/pcmcia_ioctl.c
index 5f186abca10..758ece8dc36 100644
--- a/drivers/pcmcia/pcmcia_ioctl.c
+++ b/drivers/pcmcia/pcmcia_ioctl.c
@@ -138,6 +138,94 @@ static int proc_read_drivers(char *buf, char **start, off_t pos,
}
#endif
+
+#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
+
+static 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->add_io) {
+ unsigned long begin, end;
+
+ /* you can't use the old interface if the new
+ * one was used before */
+ spin_lock_irqsave(&s->lock, flags);
+ if ((s->resource_setup_new) &&
+ !(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);
+
+ switch (adj->Resource) {
+ case RES_MEMORY_RANGE:
+ begin = adj->resource.memory.Base;
+ end = adj->resource.memory.Base + adj->resource.memory.Size - 1;
+ if (s->resource_ops->add_mem)
+ ret =s->resource_ops->add_mem(s, adj->Action, begin, end);
+ case RES_IO_RANGE:
+ begin = adj->resource.io.BasePort;
+ end = adj->resource.io.BasePort + adj->resource.io.NumPorts - 1;
+ if (s->resource_ops->add_io)
+ ret = s->resource_ops->add_io(s, adj->Action, begin, end);
+ }
+ 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);
+}
+
+
/*======================================================================
These manage a ring buffer of events pending for one user process
@@ -546,8 +634,6 @@ static u_int ds_poll(struct file *file, poll_table *wait)
/*====================================================================*/
-extern int pcmcia_adjust_resource_info(adjust_t *adj);
-
static int ds_ioctl(struct inode * inode, struct file * file,
u_int cmd, u_long arg)
{