Lean Sheng Tan has submitted this change. ( https://review.coreboot.org/c/coreboot/+/80090?usp=email )
Change subject: device/device_util: Add method to retrieve the domain ......................................................................
device/device_util: Add method to retrieve the domain
Add a function to return the PCI domain device for the specified device. On multi PCI domain platforms this function allows to determine which domain and thus which socket the PCI device belongs to.
Change-Id: I0068b82e139fe7a35e6b1b91b7d386b750c80748 Signed-off-by: Patrick Rudolph patrick.rudolph@9elements.com Reviewed-on: https://review.coreboot.org/c/coreboot/+/80090 Reviewed-by: Lean Sheng Tan sheng.tan@9elements.com Tested-by: build bot (Jenkins) no-reply@coreboot.org Reviewed-by: Nico Huber nico.h@gmx.de --- M src/device/device_util.c M src/include/device/device.h 2 files changed, 14 insertions(+), 0 deletions(-)
Approvals: build bot (Jenkins): Verified Nico Huber: Looks good to me, but someone else must approve Lean Sheng Tan: Looks good to me, approved
diff --git a/src/device/device_util.c b/src/device/device_util.c index edf053d..260c9b4 100644 --- a/src/device/device_util.c +++ b/src/device/device_util.c @@ -249,6 +249,19 @@ return "unknown"; }
+/* Returns the PCI domain for the given PCI device */ +struct device *dev_get_pci_domain(struct device *dev) +{ + /* Walk up the tree up to the PCI domain */ + while (dev && dev->bus && !is_root_device(dev)) { + dev = dev->bus->dev; + if (dev->path.type == DEVICE_PATH_DOMAIN) + return dev; + } + + return NULL; +} + /** * Allocate 64 more resources to the free list. * diff --git a/src/include/device/device.h b/src/include/device/device.h index 863299c..83588d4 100644 --- a/src/include/device/device.h +++ b/src/include/device/device.h @@ -188,6 +188,7 @@ const char *dev_name(const struct device *dev); const char *dev_path(const struct device *dev); u32 dev_path_encode(const struct device *dev); +struct device *dev_get_pci_domain(struct device *dev); void dev_set_enabled(struct device *dev, int enable); void disable_children(struct bus *bus); bool dev_is_active_bridge(struct device *dev);