From 7778e5c55fbf1399a7d80aac38890a8351fcc573 Mon Sep 17 00:00:00 2001 From: Furquan Shaikh Date: Thu, 16 Apr 2020 08:25:58 -0700 Subject: device: Add a helper to find device behind a PCI-to-PCI bridge device This change adds a helper function to find PCI device with dev# and function# behind a PCI-to-PCI bridge device. BUG=b:153858769 BRANCH=None TEST=None Signed-off-by: Furquan Shaikh Change-Id: Ie5672b35cda66431a0f1977f217bdf61d3012ace Reviewed-on: https://review.coreboot.org/c/coreboot/+/40474 Reviewed-by: Aaron Durbin Tested-by: build bot (Jenkins) --- src/include/device/device.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'src/include/device') diff --git a/src/include/device/device.h b/src/include/device/device.h index 4e9c594bc0..a33702a234 100644 --- a/src/include/device/device.h +++ b/src/include/device/device.h @@ -293,6 +293,10 @@ DEVTREE_CONST struct device *pcidev_path_on_root(pci_devfn_t devfn); DEVTREE_CONST struct device *pcidev_path_on_bus(unsigned int bus, pci_devfn_t devfn); DEVTREE_CONST struct device *pcidev_on_root(uint8_t dev, uint8_t fn); DEVTREE_CONST struct bus *pci_root_bus(void); +/* Find PCI device with given D#:F# sitting behind the given PCI-to-PCI bridge device. */ +DEVTREE_CONST struct device *pcidev_path_behind_pci2pci_bridge( + const struct device *bridge, + pci_devfn_t devfn); /* To be deprecated, avoid using. * -- cgit v1.2.3