Commit 6a0668fc authored by Olivier Galibert's avatar Olivier Galibert Committed by Andi Kleen

[PATCH] mmconfig: Reserve resources but only when we're sure about them.

Put back the resource reservation as per
4c6e052a but use it *only* when the range(s)
come from a chipset probe instead of the bios.
Signed-off-by: default avatarOlivier Galibert <galibert@pobox.com>
Signed-off-by: default avatarAndi Kleen <ak@suse.de>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
parent 9358c693
......@@ -166,6 +166,37 @@ static int __init pci_mmcfg_check_hostbridge(void)
return name != NULL;
}
static __init void pci_mmcfg_insert_resources(void)
{
#define PCI_MMCFG_RESOURCE_NAME_LEN 19
int i;
struct resource *res;
char *names;
unsigned num_buses;
res = kcalloc(PCI_MMCFG_RESOURCE_NAME_LEN + sizeof(*res),
pci_mmcfg_config_num, GFP_KERNEL);
if (!res) {
printk(KERN_ERR "PCI: Unable to allocate MMCONFIG resources\n");
return;
}
names = (void *)&res[pci_mmcfg_config_num];
for (i = 0; i < pci_mmcfg_config_num; i++, res++) {
num_buses = pci_mmcfg_config[i].end_bus_number -
pci_mmcfg_config[i].start_bus_number + 1;
res->name = names;
snprintf(names, PCI_MMCFG_RESOURCE_NAME_LEN, "PCI MMCONFIG %u",
pci_mmcfg_config[i].pci_segment);
res->start = pci_mmcfg_config[i].address;
res->end = res->start + (num_buses << 20) - 1;
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
insert_resource(&iomem_resource, res);
names += PCI_MMCFG_RESOURCE_NAME_LEN;
}
}
void __init pci_mmcfg_init(int type)
{
int known_bridge = 0;
......@@ -199,6 +230,8 @@ void __init pci_mmcfg_init(int type)
if (pci_mmcfg_arch_init()) {
if (type == 1)
unreachable_devices();
if (known_bridge)
pci_mmcfg_insert_resources();
pci_probe = (pci_probe & ~PCI_PROBE_MASK) | PCI_PROBE_MMCONF;
}
}
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment