Hi, On Thursday 12 September 2013 03:00 PM, Pratyush Anand wrote: > Hi Jingoo, > > > On Thu, Sep 12, 2013 at 03:15:04PM +0800, Jingoo Han wrote: >> On Tuesday 23 July 2013 12:30 PM, Kishon Vijay Abraham I wrote: >>>>> . >>>>> . >>>>>>>> + of_pci_range_to_resource(&range, np, &pp->cfg); >>>>>>>> + pp->config.cfg0_size = resource_size(&pp->cfg)/2; >>>>>>>> + pp->config.cfg1_size = resource_size(&pp->cfg)/2; >>>>>>>> + } >>>>>>>> + } >>>>>>>> + >>>>>>>> + pp->dbi_base = devm_ioremap(pp->dev, pp->cfg.start, >>>>>>>> + resource_size(&pp->cfg)); >>>>>>> >>>>>>> Why is configuraion space divided into two? >>>>>> >>>>>> Sorry, I don't know the exact reason. :( >>>>>> Pratyush Anand may know about this. >>>>>> Pratyush Anand, could you answer the question? >>>>>> >>>>>> Also, if you find some problems, please let me know. >>> >>> One more query.. >>> >>> Where is inbound translation configuration done in your driver? how should it >>> be done? >> > > Yes, Kishon is right. Inbound translation configuration is missing in > your code and I think it should be implemented. > >> Hi Kishon, >> >> Sorry, I cannot understand your question exactly. >> However, the following thread would be helpful. >> >> http://www.spinics.net/lists/arm-kernel/msg252078.html >> https://lkml.org/lkml/2013/6/17/890 > > From this conversation, It seems that you > have tested this driver and it works fine without inbound translation > function. I am sure that you would have tested a PCIe card with DMA > capability such as PCIe2USB or PCIe2Ethernet. Since it worked, it > means that by default your controller is supporting one to one mapping > in case of inbound transaction even when address translation is enabled. btw, I'm testing Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller. when I do ifconfig eth0 up, I get *r8169 0000:01:00.0 eth0: link up.* But I dont receive any packets and ping also fails and the tx and rx packet count is also 0. Could it be related to inbound translation? Thanks Kishon -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
