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0613e7934e
The eDMA/HDMA transfers the driver issues carry a requester function number in their TLPs, but nothing ever programs it: eDMA v0 leaves the FUNC_NUM field of the channel control word zero and HDMA leaves the per-channel func_num register at its reset value, so every transfer is attributed to function 0. That is invisible in single-function setups, but once the DMA block serves a non-zero endpoint function, its requests must carry that function's number for the host to attribute and translate them correctly. Record the function number in the chip data (PCI_FUNC() of the probing device for dw-edma-pcie) and program it per channel. Endpoint-local chip instances keep func_no at 0, so transfers issued by the endpoint-side driver remain PF0-attributed. Delegated channels are programmed by the host-side dw-edma-pcie instance when it takes over the channel, using that instance's PCI_FUNC(). Reviewed-by: Frank Li <Frank.Li@nxp.com> Signed-off-by: Koichiro Den <den@valinux.co.jp> Link: https://patch.msgid.link/20260721062815.4117887-15-den@valinux.co.jp Signed-off-by: Vinod Koul <vkoul@kernel.org>