102 lines
1.9 KiB
C
102 lines
1.9 KiB
C
#include <linux/init.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/range.h>
|
|
|
|
#include "bus_numa.h"
|
|
|
|
int pci_root_num;
|
|
struct pci_root_info pci_root_info[PCI_ROOT_NR];
|
|
|
|
void x86_pci_root_bus_res_quirks(struct pci_bus *b)
|
|
{
|
|
int i;
|
|
int j;
|
|
struct pci_root_info *info;
|
|
|
|
/* don't go for it if _CRS is used already */
|
|
if (b->resource[0] != &ioport_resource ||
|
|
b->resource[1] != &iomem_resource)
|
|
return;
|
|
|
|
if (!pci_root_num)
|
|
return;
|
|
|
|
for (i = 0; i < pci_root_num; i++) {
|
|
if (pci_root_info[i].bus_min == b->number)
|
|
break;
|
|
}
|
|
|
|
if (i == pci_root_num)
|
|
return;
|
|
|
|
printk(KERN_DEBUG "PCI: peer root bus %02x res updated from pci conf\n",
|
|
b->number);
|
|
|
|
pci_bus_remove_resources(b);
|
|
info = &pci_root_info[i];
|
|
for (j = 0; j < info->res_num; j++) {
|
|
struct resource *res;
|
|
struct resource *root;
|
|
|
|
res = &info->res[j];
|
|
pci_bus_add_resource(b, res, 0);
|
|
if (res->flags & IORESOURCE_IO)
|
|
root = &ioport_resource;
|
|
else
|
|
root = &iomem_resource;
|
|
insert_resource(root, res);
|
|
}
|
|
}
|
|
|
|
void __devinit update_res(struct pci_root_info *info, resource_size_t start,
|
|
resource_size_t end, unsigned long flags, int merge)
|
|
{
|
|
int i;
|
|
struct resource *res;
|
|
|
|
if (start > end)
|
|
return;
|
|
|
|
if (start == MAX_RESOURCE)
|
|
return;
|
|
|
|
if (!merge)
|
|
goto addit;
|
|
|
|
/* try to merge it with old one */
|
|
for (i = 0; i < info->res_num; i++) {
|
|
resource_size_t final_start, final_end;
|
|
resource_size_t common_start, common_end;
|
|
|
|
res = &info->res[i];
|
|
if (res->flags != flags)
|
|
continue;
|
|
|
|
common_start = max(res->start, start);
|
|
common_end = min(res->end, end);
|
|
if (common_start > common_end + 1)
|
|
continue;
|
|
|
|
final_start = min(res->start, start);
|
|
final_end = max(res->end, end);
|
|
|
|
res->start = final_start;
|
|
res->end = final_end;
|
|
return;
|
|
}
|
|
|
|
addit:
|
|
|
|
/* need to add that */
|
|
if (info->res_num >= RES_NUM)
|
|
return;
|
|
|
|
res = &info->res[info->res_num];
|
|
res->name = info->name;
|
|
res->flags = flags;
|
|
res->start = start;
|
|
res->end = end;
|
|
res->child = NULL;
|
|
info->res_num++;
|
|
}
|