sravan/system76-coreboot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

soc/intel/xeon_sp/chip_common.c: Probe all buses in attach_iio_stacks()

Browse Source 
For some Xeon-SP (such as SPR-SP), more buses should be probed.

Signed-off-by: Jonathan Zhang <jonzhang@meta.com>
Signed-off-by: Johnny Lin <johnny_lin@wiwynn.com>
Change-Id: Ica3c61493a0ff6c699b500f30788b2cf5a06c250
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71965
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jonathan Zhang <jon.zhixiong.zhang@gmail.com>
This commit is contained in:
Jonathan Zhang
2023-01-25 11:28:49 -08:00
committed by Lean Sheng Tan
parent 5c1964058f
commit 532e8c059e
1 changed files with 44 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
src/soc/intel/xeon_sp/chip_common.c
View File

@@ -493,47 +493,65 @@ void xeonsp_pci_domain_set_resources(struct device *dev)
/* Attach IIO stack bus numbers with dummy device to PCI DOMAIN 0000 device */
void attach_iio_stacks(struct device *dev)
{
struct bus *iiostack_bus;
struct device dummy;
struct iiostack_resource stack_info = {0};
DEV_FUNC_ENTER(dev);
get_iiostack_info(&stack_info);
for (int s = 0; s < stack_info.no_of_stacks; ++s) {
STACK_RES *sr = &stack_info.res[s];
/* only non zero bus no. needs to be enumerated */
if (stack_info.res[s].BusBase == 0)
if (sr->BusBase == 0) {
/* Update BUS 0 BusLimit */
dev->link_list->max_subordinate = sr->BusLimit;
continue;
}
iiostack_bus = malloc(sizeof(struct bus));
if (!iiostack_bus)
die("%s: out of memory.\n", __func__);
memset(iiostack_bus, 0, sizeof(*iiostack_bus));
memcpy(iiostack_bus, dev->bus, sizeof(*iiostack_bus));
iiostack_bus->secondary = stack_info.res[s].BusBase;
iiostack_bus->subordinate = stack_info.res[s].BusBase;
iiostack_bus->dev = NULL;
iiostack_bus->children = NULL;
iiostack_bus->next = NULL;
iiostack_bus->link_num = 1;
for (int b = sr->BusBase; b <= sr->BusLimit; ++b) {
struct bus tmp_bus;
memset(&tmp_bus, 0, sizeof(tmp_bus));
memcpy(&tmp_bus, dev->bus, sizeof(tmp_bus));
tmp_bus.secondary = b;
tmp_bus.subordinate = b;
tmp_bus.max_subordinate = sr->BusLimit;
tmp_bus.dev = NULL;
tmp_bus.children = NULL;
tmp_bus.next = NULL;
tmp_bus.link_num = 1;
dummy.bus = iiostack_bus;
dummy.bus = &tmp_bus;
dummy.path.type = DEVICE_PATH_PCI;
dummy.path.pci.devfn = 0;
uint32_t id = pci_read_config32(&dummy, PCI_VENDOR_ID);
if (id == 0xffffffff)
printk(BIOS_WARNING, "IIO Stack device %s not visible\n",
if (id == 0xffffffff) {
printk(BIOS_DEBUG, "IIO Stack device %s not visible\n",
dev_path(&dummy));
continue;
}
if (!dev->link_list) {
printk(BIOS_DEBUG, "%s Attaching IIO Bus %s\n", __func__,
dev_path(&dummy));
printk(BIOS_DEBUG, " %s attach secondary: 0x%x, subordinate: 0x%x, dev: %s\n",
__func__, tmp_bus.secondary,
tmp_bus.subordinate, dev_path(&dummy));
struct bus *iiostack_bus = malloc(sizeof(struct bus));
if (iiostack_bus == NULL)
die("%s: out of memory.\n", __func__);
memcpy(iiostack_bus, &tmp_bus, sizeof(*iiostack_bus));
if (dev->link_list == NULL) {
dev->link_list = iiostack_bus;
} else {
struct bus *nlink = dev->link_list;
while (nlink->next)
while (nlink->next != NULL)
nlink = nlink->next;
nlink->next = iiostack_bus;
}
}
}
DEV_FUNC_EXIT(dev);
}