Messages in this thread | | | Subject | Re: [BUG/RFC/PATCH] drm: Fix for non-coherent DMA PowerPC | From | Benjamin Herrenschmidt <> | Date | Mon, 03 Mar 2008 09:54:07 +1100 |
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> Okay, I changed the code to this: > > >DRM_DEBUG("dev = 0x%x, bus_address = 0x%x, bus_to_virt = 0x%lx, max_pages = 0x%x\n", > > (unsigned int)&dev->pdev->dev, bus_address, > > (unsigned long)virt_to_bus(bus_address), max_pages); > > > >if (gart_info->gart_table_location == DRM_ATI_GART_MAIN) { > > DRM_DEBUG("calling dma_sync_single_for_device()\n"); > > dma_sync_single_for_device(&dev->pdev->dev, > > bus_address, > > max_pages * sizeof(u32), > > PCI_DMA_TODEVICE); > >} > > It looks like dma_sync_single_for_device() is not called here (the debug > messages don't show up in kernel log). I also included the Xorg.0.log > file.
Ok, try adding more debug then, around the calls to pci_map_single() in that same function and dump the arguments. I'm especially interested in the result of the various page_address().
Ben.
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