[PATCH 22/140] PNP: reserve system board iomem resources as well as ioport resources

Len Brown
2007-02-07T18:53:26Z

From: Bjorn Helgaas <bjorn.helgaas@hp.com>

Most x86 boxes have no iomem system board resources, but some ia64
boxes do.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
---
drivers/pnp/system.c | 26 +++++++++++++++++++-------
1 files changed, 19 insertions(+), 7 deletions(-)

diff --git a/drivers/pnp/system.c b/drivers/pnp/system.c
index d42015c..fd17c71 100644
--- a/drivers/pnp/system.c
+++ b/drivers/pnp/system.c
@@ -3,7 +3,8 @@
*
* Some code is based on pnpbios_core.c
* Copyright 2002 Adam Belay <ambx1@neo.rr.com>
- *
+ * (c) Copyright 2007 Hewlett-Packard Development Company, L.P.
+ * Bjorn Helgaas <bjorn.helgaas@hp.com>
*/

#include <linux/pnp.h>
@@ -21,7 +22,7 @@ static const struct pnp_device_id pnp_dev_table[] = {
{ "", 0 }
};

-static void reserve_ioport_range(char *pnpid, int start, int end)
+static void reserve_range(char *pnpid, int start, int end, int port)
{
struct resource *res;
char *regionid;
@@ -30,7 +31,10 @@ static void reserve_ioport_range(char *pnpid, int start, int end)
if ( regionid == NULL )
return;
snprintf(regionid, 16, "pnp %s", pnpid);
- res = request_region(start,end-start+1,regionid);
+ if (port)
+ res = request_region(start,end-start+1,regionid);
+ else
+ res = request_mem_region(start,end-start+1,regionid);
if ( res == NULL )
kfree( regionid );
else
@@ -41,8 +45,8 @@ static void reserve_ioport_range(char *pnpid, int start, int end)
* have double reservations.
*/
printk(KERN_INFO
- "pnp: %s: ioport range 0x%x-0x%x %s reserved\n",
- pnpid, start, end,
+ "pnp: %s: %s range 0x%x-0x%x %s reserved\n",
+ pnpid, port ? "ioport" : "iomem", start, end,
NULL != res ? "has been" : "could not be"
);

@@ -75,13 +79,21 @@ static void reserve_resources_of_dev( struct pnp_dev *dev )
/* invalid endpoint */
/* Do nothing */
continue;
- reserve_ioport_range(
+ reserve_range(
dev->dev.bus_id,
pnp_port_start(dev, i),
- pnp_port_end(dev, i)
+ pnp_port_end(dev, i), 1
);
}

+ for (i = 0; i < PNP_MAX_MEM; i++) {
+ if (!pnp_mem_valid(dev, i))
+ continue;
+
+ reserve_range(dev->dev.bus_id, pnp_mem_start(dev, i),
+ pnp_mem_end(dev, i), 0);
+ }
+
return;
}

--
1.5.0.rc3.39.gec804