On 08/11/17 13:45, Joao Pinto wrote: > Hello to all, > > Às 12:56 AM de 11/8/2017, Bjorn Helgaas escreveu: >> On Fri, Nov 03, 2017 at 02:47:05PM +0100, Niklas Cassel wrote: >>> Use the DMA-API to get the MSI address. This address will be written to >>> our PCI config space and to the register which determines which AXI >>> address the DWC IP will spoof for incoming MSI irqs. >>> >>> Since it is a PCIe endpoint device, rather than the CPU, that is supposed >>> to write to the MSI address, the proper way to get the MSI address is by >>> using the DMA API, not by using virt_to_phys(). >>> >>> Using virt_to_phys() might work on some systems, but using the DMA API >>> should work on all systems. >>> >>> This is essentially the same thing as allocating a buffer in a driver >>> to which the endpoint will write to. To do this, we use the DMA API. >>> >>> Signed-off-by: Niklas Cassel <niklas.cassel@xxxxxxxx> >> >> I'm expecting Jingoo and/or Joao to chime in and ack the >> DesignWare-related patches. I think all the others are in >> pretty good shape. >> >>> --- >>> drivers/pci/dwc/pcie-designware-host.c | 15 ++++++++++++--- >>> drivers/pci/dwc/pcie-designware.h | 3 ++- >>> 2 files changed, 14 insertions(+), 4 deletions(-) >>> ... > > Let me test this patch-set in my setup first! > I will give feedback until Friday. > Hello Joao, did you manage to find any time to test the designware related patches? If not, I posted a V5 yesterday, so in case you are still planning on testing them, could you please test V5 instead? Best regards, Niklas
