hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

PNP: reserve system board iomem resources as well as ioport resources 

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>
This commit is contained in:
Bjorn Helgaas 2007-01-18 16:43:27 -07:00 committed by Len Brown
parent 9a47cdb1bb
commit a8c78f7fb1
1 changed files with 19 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
drivers/pnp/system.c
View File

@ -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;
}