Hi Vladimir,
On Sat, Nov 23, 2019 at 6:23 AM Vladimir Olovyannikov vladimir.olovyannikov@broadcom.com wrote:
From: Srinath Mannam srinath.mannam@broadcom.com
Add changes to fix bus number of host bridge is set with device sequence number issue. All devices are managed using device sequence number. For PCIe, devices enabled in DTS are added under PCIE_CLASS with consecutive device sequence numbers to scan all pcie devices in sequence using device sequence number. If a device is a bridge then it will enumerate all endpoints in that bridge, and give sequence numbers in that order. However, the parent device is a root bridge. The solution is all bus numbers are device sequence number minus root bridge sequence number. This way, every root bridge and its downstream EPs bus numbers start from 0. So root bridges are different hierarchy of bus numbers.
Could you please give an example for better understanding?
Signed-off-by: Srinath Mannam srinath.mannam@broadcom.com Signed-off-by: Vladimir Olovyannikov vladimir.olovyannikov@broadcom.com
drivers/pci/pci-uclass.c | 8 +++++--- drivers/pci/pci_auto.c | 6 +++++- 2 files changed, 10 insertions(+), 4 deletions(-)
Regards, Bin