Hi Konrad, Finally, I can use ethernet :D. It was my mistake. I thought the SET_NETDEV_DEV() makes ndev == pdev->dev, but it's not true.
So I changed the dma configuration from: dma_coerce_mask_and_coherent(*&pdev->dev*, DMA_BIT_MASK(32)); SET_NETDEV_DEV(ndev, &pdev->dev); to: dma_coerce_mask_and_coherent(*&ndev->dev*, DMA_BIT_MASK(32)); SET_NETDEV_DEV(ndev, &pdev->dev); and then sh_eth works. However I wanted to set dma_mask in pdev, I just thought about the original data have a mask bit. Do you know how do I set dma_mask in pdev? Thank you for your help! Thanks, Wonseok. Thanks, Wonseok. 2016-04-14 22:52 GMT+09:00 Konrad Rzeszutek Wilk <konrad.w...@oracle.com>: > On Wed, Apr 13, 2016 at 02:18:09PM +0900, Wonseok Ko wrote: > > Hi Konrad, > > > > In dma_capable(), it checks that mask, size and address of device. > > > > Currently, it dosen't pass to first condition code as below: > > > > if (!dev->dma_mask) > > > > return 0; > > > > It shows the device doesn't have dma_mask bit. So I tried to set the > > dma_mask bit in sh_eth.c > > > > My approaches: > > 1. I tried to set a mask bit(dev->dma_mask) to use > > dma_coerce_mask_and_coherent() > > in sh_eth_drv_probe(), but it doesn't work. > > Are there any errors? What does dma_mask end up being? > > 2. forced set dev->dma_mask without kernel api. I passed to dma_capable() > > but driver cannot work. > > Aha, what did you set it to? Do you have a diff? > > > > sh_eth driver want to get valid DMA descriptor to set DMA descriptor > > address for Rx and Tx. > > Right, which it would plug in its driver registers so the card > can pick it up. > > I tried to set the some bits(such as dma_mask) to get valid dma address > > forcibly, in this configuration sh_eth cannot work. > > Uh, not sure I understand. Or are you repeating what you mentioned > earlier? > > > > My question is if I want to get valid dma address with xen swiotlb(suchas > > map_page, set_dma_mask and so on)? > > Well it all should work just fine - perhaps if you provide some > diff's and such I can help you along? > > > > > > > > > > > Thanks, > > Wonseok. > > > > 2016-04-13 2:10 GMT+09:00 Konrad Rzeszutek Wilk <konrad.w...@oracle.com > >: > > > > > On Tue, Apr 12, 2016 at 04:54:55PM +0900, Wonseok Ko wrote: > > > > Hi, > > > > > > > > I'm trying to enable ethernet driver in Domain0 for R-Car H2, but it > > > > doesn't work. The root cause of the problem is that driver cannot > satisfy > > > > the condition of dma_capable(). I found the same problem in the > mailing > > > > > > So what can be done about making it dma_capable() ? > > > > > > > list, but the problem is still remaining I guess. previous mail: ( > > > > http://lists.xen.org/archives/html/xen-devel/2014-10/msg03170.html) > > > > > > > > Does anyone give me advise? > > > > > > > > My environment as below: > > > > - dom0 linux version: 4.3 > > > > - xen version: 4.6 commit(40d7a7454835c2f7c639c78f6c09e7b6f0e4a4e2) > > > > > > > > > > > > Thanks, > > > > Wonseok. > > > > > > > _______________________________________________ > > > > Xen-devel mailing list > > > > Xen-devel@lists.xen.org > > > > http://lists.xen.org/xen-devel > > > > > > >
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