diff options
Diffstat (limited to 'arch/powerpc/kernel/dma-swiotlb.c')
| -rw-r--r-- | arch/powerpc/kernel/dma-swiotlb.c | 53 |
1 files changed, 17 insertions, 36 deletions
diff --git a/arch/powerpc/kernel/dma-swiotlb.c b/arch/powerpc/kernel/dma-swiotlb.c index e8a57de85bcf..e96cbbd9b449 100644 --- a/arch/powerpc/kernel/dma-swiotlb.c +++ b/arch/powerpc/kernel/dma-swiotlb.c @@ -25,33 +25,13 @@ int swiotlb __read_mostly; unsigned int ppc_swiotlb_enable; /* - * Determine if an address is reachable by a pci device, or if we must bounce. - */ -static int -swiotlb_pci_addr_needs_map(struct device *hwdev, dma_addr_t addr, size_t size) -{ - dma_addr_t max; - struct pci_controller *hose; - struct pci_dev *pdev = to_pci_dev(hwdev); - - hose = pci_bus_to_host(pdev->bus); - max = hose->dma_window_base_cur + hose->dma_window_size; - - /* check that we're within mapped pci window space */ - if ((addr + size > max) | (addr < hose->dma_window_base_cur)) - return 1; - - return 0; -} - -/* * At the moment, all platforms that use this code only require * swiotlb to be used if we're operating on HIGHMEM. Since * we don't ever call anything other than map_sg, unmap_sg, * map_page, and unmap_page on highmem, use normal dma_ops * for everything else. */ -struct dma_mapping_ops swiotlb_dma_ops = { +struct dma_map_ops swiotlb_dma_ops = { .alloc_coherent = dma_direct_alloc_coherent, .free_coherent = dma_direct_free_coherent, .map_sg = swiotlb_map_sg_attrs, @@ -62,33 +42,34 @@ struct dma_mapping_ops swiotlb_dma_ops = { .sync_single_range_for_cpu = swiotlb_sync_single_range_for_cpu, .sync_single_range_for_device = swiotlb_sync_single_range_for_device, .sync_sg_for_cpu = swiotlb_sync_sg_for_cpu, - .sync_sg_for_device = swiotlb_sync_sg_for_device + .sync_sg_for_device = swiotlb_sync_sg_for_device, + .mapping_error = swiotlb_dma_mapping_error, }; -struct dma_mapping_ops swiotlb_pci_dma_ops = { - .alloc_coherent = dma_direct_alloc_coherent, - .free_coherent = dma_direct_free_coherent, - .map_sg = swiotlb_map_sg_attrs, - .unmap_sg = swiotlb_unmap_sg_attrs, - .dma_supported = swiotlb_dma_supported, - .map_page = swiotlb_map_page, - .unmap_page = swiotlb_unmap_page, - .addr_needs_map = swiotlb_pci_addr_needs_map, - .sync_single_range_for_cpu = swiotlb_sync_single_range_for_cpu, - .sync_single_range_for_device = swiotlb_sync_single_range_for_device, - .sync_sg_for_cpu = swiotlb_sync_sg_for_cpu, - .sync_sg_for_device = swiotlb_sync_sg_for_device -}; +void pci_dma_dev_setup_swiotlb(struct pci_dev *pdev) +{ + struct pci_controller *hose; + struct dev_archdata *sd; + + hose = pci_bus_to_host(pdev->bus); + sd = &pdev->dev.archdata; + sd->max_direct_dma_addr = + hose->dma_window_base_cur + hose->dma_window_size; +} static int ppc_swiotlb_bus_notify(struct notifier_block *nb, unsigned long action, void *data) { struct device *dev = data; + struct dev_archdata *sd; /* We are only intereted in device addition */ if (action != BUS_NOTIFY_ADD_DEVICE) return 0; + sd = &dev->archdata; + sd->max_direct_dma_addr = 0; + /* May need to bounce if the device can't address all of DRAM */ if (dma_get_mask(dev) < lmb_end_of_DRAM()) set_dma_ops(dev, &swiotlb_dma_ops); |