diff options
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/include/asm/device.h | 3 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/dma-mapping.h | 8 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/swiotlb.h | 5 | ||||
| -rw-r--r-- | arch/powerpc/kernel/dma-swiotlb.c | 36 | ||||
| -rw-r--r-- | arch/powerpc/platforms/85xx/mpc8536_ds.c | 1 | ||||
| -rw-r--r-- | arch/powerpc/platforms/85xx/mpc85xx_ds.c | 1 | ||||
| -rw-r--r-- | arch/powerpc/platforms/85xx/mpc85xx_mds.c | 1 | ||||
| -rw-r--r-- | arch/powerpc/platforms/86xx/mpc86xx_hpcn.c | 1 |
8 files changed, 28 insertions, 28 deletions
diff --git a/arch/powerpc/include/asm/device.h b/arch/powerpc/include/asm/device.h index 7d2277c..0086f8d 100644 --- a/arch/powerpc/include/asm/device.h +++ b/arch/powerpc/include/asm/device.h @@ -16,6 +16,9 @@ struct dev_archdata { /* DMA operations on that device */ struct dma_mapping_ops *dma_ops; void *dma_data; +#ifdef CONFIG_SWIOTLB + dma_addr_t max_direct_dma_addr; +#endif }; static inline void dev_archdata_set_node(struct dev_archdata *ad, diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h index 0c34371..1765c37 100644 --- a/arch/powerpc/include/asm/dma-mapping.h +++ b/arch/powerpc/include/asm/dma-mapping.h @@ -87,8 +87,6 @@ struct dma_mapping_ops { dma_addr_t dma_address, size_t size, enum dma_data_direction direction, struct dma_attrs *attrs); - int (*addr_needs_map)(struct device *dev, dma_addr_t addr, - size_t size); #ifdef CONFIG_PPC_NEED_DMA_SYNC_OPS void (*sync_single_range_for_cpu)(struct device *hwdev, dma_addr_t dma_handle, unsigned long offset, @@ -426,10 +424,12 @@ static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) { - struct dma_mapping_ops *ops = get_dma_ops(dev); +#ifdef CONFIG_SWIOTLB + struct dev_archdata *sd = &dev->archdata; - if (ops->addr_needs_map && ops->addr_needs_map(dev, addr, size)) + if (sd->max_direct_dma_addr && addr + size > sd->max_direct_dma_addr) return 0; +#endif if (!dev->dma_mask) return 0; diff --git a/arch/powerpc/include/asm/swiotlb.h b/arch/powerpc/include/asm/swiotlb.h index 30891d6..31e0e43 100644 --- a/arch/powerpc/include/asm/swiotlb.h +++ b/arch/powerpc/include/asm/swiotlb.h @@ -16,12 +16,11 @@ extern struct dma_mapping_ops swiotlb_dma_ops; extern struct dma_mapping_ops swiotlb_pci_dma_ops; -int swiotlb_arch_address_needs_mapping(struct device *, dma_addr_t, - size_t size); - static inline void dma_mark_clean(void *addr, size_t size) {} extern unsigned int ppc_swiotlb_enable; int __init swiotlb_setup_bus_notifier(void); +extern void pci_dma_dev_setup_swiotlb(struct pci_dev *pdev); + #endif /* __ASM_SWIOTLB_H */ diff --git a/arch/powerpc/kernel/dma-swiotlb.c b/arch/powerpc/kernel/dma-swiotlb.c index e8a57de..c9f6a30 100644 --- a/arch/powerpc/kernel/dma-swiotlb.c +++ b/arch/powerpc/kernel/dma-swiotlb.c @@ -25,26 +25,6 @@ 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, @@ -73,22 +53,36 @@ struct dma_mapping_ops swiotlb_pci_dma_ops = { .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); diff --git a/arch/powerpc/platforms/85xx/mpc8536_ds.c b/arch/powerpc/platforms/85xx/mpc8536_ds.c index 055ff41..bf052c0 100644 --- a/arch/powerpc/platforms/85xx/mpc8536_ds.c +++ b/arch/powerpc/platforms/85xx/mpc8536_ds.c @@ -97,6 +97,7 @@ static void __init mpc8536_ds_setup_arch(void) if (lmb_end_of_DRAM() > max) { ppc_swiotlb_enable = 1; set_pci_dma_ops(&swiotlb_pci_dma_ops); + ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_swiotlb; } #endif diff --git a/arch/powerpc/platforms/85xx/mpc85xx_ds.c b/arch/powerpc/platforms/85xx/mpc85xx_ds.c index 849c0ac..c6f92cc 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_ds.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_ds.c @@ -193,6 +193,7 @@ static void __init mpc85xx_ds_setup_arch(void) if (lmb_end_of_DRAM() > max) { ppc_swiotlb_enable = 1; set_pci_dma_ops(&swiotlb_pci_dma_ops); + ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_swiotlb; } #endif diff --git a/arch/powerpc/platforms/85xx/mpc85xx_mds.c b/arch/powerpc/platforms/85xx/mpc85xx_mds.c index 20a61d0af..25998b6 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_mds.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_mds.c @@ -256,6 +256,7 @@ static void __init mpc85xx_mds_setup_arch(void) if (lmb_end_of_DRAM() > max) { ppc_swiotlb_enable = 1; set_pci_dma_ops(&swiotlb_pci_dma_ops); + ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_swiotlb; } #endif } diff --git a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c index 6632702..8032301 100644 --- a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c +++ b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c @@ -106,6 +106,7 @@ mpc86xx_hpcn_setup_arch(void) if (lmb_end_of_DRAM() > max) { ppc_swiotlb_enable = 1; set_pci_dma_ops(&swiotlb_pci_dma_ops); + ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_swiotlb; } #endif } |
