diff options
| -rw-r--r-- | drivers/infiniband/core/device.c | 26 | ||||
| -rw-r--r-- | include/rdma/ib_verbs.h | 30 |
2 files changed, 37 insertions, 19 deletions
diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c index 593d2ce6ec7c..addf869045cc 100644 --- a/drivers/infiniband/core/device.c +++ b/drivers/infiniband/core/device.c @@ -336,12 +336,26 @@ int ib_register_device(struct ib_device *device, struct device *parent = device->dev.parent; WARN_ON_ONCE(!parent); - if (!device->dev.dma_ops) - device->dev.dma_ops = parent->dma_ops; - if (!device->dev.dma_mask) - device->dev.dma_mask = parent->dma_mask; - if (!device->dev.coherent_dma_mask) - device->dev.coherent_dma_mask = parent->coherent_dma_mask; + WARN_ON_ONCE(device->dma_device); + if (device->dev.dma_ops) { + /* + * The caller provided custom DMA operations. Copy the + * DMA-related fields that are used by e.g. dma_alloc_coherent() + * into device->dev. + */ + device->dma_device = &device->dev; + if (!device->dev.dma_mask) + device->dev.dma_mask = parent->dma_mask; + if (!device->dev.coherent_dma_mask) + device->dev.coherent_dma_mask = + parent->coherent_dma_mask; + } else { + /* + * The caller did not provide custom DMA operations. Use the + * DMA mapping operations of the parent device. + */ + device->dma_device = parent; + } mutex_lock(&device_mutex); diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 0f1813c13687..99e4423eb2b8 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -1863,6 +1863,9 @@ struct ib_port_immutable { }; struct ib_device { + /* Do not access @dma_device directly from ULP nor from HW drivers. */ + struct device *dma_device; + char name[IB_DEVICE_NAME_MAX]; struct list_head event_handler_list; @@ -3007,7 +3010,7 @@ static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt) */ static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr) { - return dma_mapping_error(&dev->dev, dma_addr); + return dma_mapping_error(dev->dma_device, dma_addr); } /** @@ -3021,7 +3024,7 @@ static inline u64 ib_dma_map_single(struct ib_device *dev, void *cpu_addr, size_t size, enum dma_data_direction direction) { - return dma_map_single(&dev->dev, cpu_addr, size, direction); + return dma_map_single(dev->dma_device, cpu_addr, size, direction); } /** @@ -3035,7 +3038,7 @@ static inline void ib_dma_unmap_single(struct ib_device *dev, u64 addr, size_t size, enum dma_data_direction direction) { - dma_unmap_single(&dev->dev, addr, size, direction); + dma_unmap_single(dev->dma_device, addr, size, direction); } /** @@ -3052,7 +3055,7 @@ static inline u64 ib_dma_map_page(struct ib_device *dev, size_t size, enum dma_data_direction direction) { - return dma_map_page(&dev->dev, page, offset, size, direction); + return dma_map_page(dev->dma_device, page, offset, size, direction); } /** @@ -3066,7 +3069,7 @@ static inline void ib_dma_unmap_page(struct ib_device *dev, u64 addr, size_t size, enum dma_data_direction direction) { - dma_unmap_page(&dev->dev, addr, size, direction); + dma_unmap_page(dev->dma_device, addr, size, direction); } /** @@ -3080,7 +3083,7 @@ static inline int ib_dma_map_sg(struct ib_device *dev, struct scatterlist *sg, int nents, enum dma_data_direction direction) { - return dma_map_sg(&dev->dev, sg, nents, direction); + return dma_map_sg(dev->dma_device, sg, nents, direction); } /** @@ -3094,7 +3097,7 @@ static inline void ib_dma_unmap_sg(struct ib_device *dev, struct scatterlist *sg, int nents, enum dma_data_direction direction) { - dma_unmap_sg(&dev->dev, sg, nents, direction); + dma_unmap_sg(dev->dma_device, sg, nents, direction); } static inline int ib_dma_map_sg_attrs(struct ib_device *dev, @@ -3102,7 +3105,8 @@ static inline int ib_dma_map_sg_attrs(struct ib_device *dev, enum dma_data_direction direction, unsigned long dma_attrs) { - return dma_map_sg_attrs(&dev->dev, sg, nents, direction, dma_attrs); + return dma_map_sg_attrs(dev->dma_device, sg, nents, direction, + dma_attrs); } static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev, @@ -3110,7 +3114,7 @@ static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev, enum dma_data_direction direction, unsigned long dma_attrs) { - dma_unmap_sg_attrs(&dev->dev, sg, nents, direction, dma_attrs); + dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction, dma_attrs); } /** * ib_sg_dma_address - Return the DMA address from a scatter/gather entry @@ -3152,7 +3156,7 @@ static inline void ib_dma_sync_single_for_cpu(struct ib_device *dev, size_t size, enum dma_data_direction dir) { - dma_sync_single_for_cpu(&dev->dev, addr, size, dir); + dma_sync_single_for_cpu(dev->dma_device, addr, size, dir); } /** @@ -3167,7 +3171,7 @@ static inline void ib_dma_sync_single_for_device(struct ib_device *dev, size_t size, enum dma_data_direction dir) { - dma_sync_single_for_device(&dev->dev, addr, size, dir); + dma_sync_single_for_device(dev->dma_device, addr, size, dir); } /** @@ -3182,7 +3186,7 @@ static inline void *ib_dma_alloc_coherent(struct ib_device *dev, dma_addr_t *dma_handle, gfp_t flag) { - return dma_alloc_coherent(&dev->dev, size, dma_handle, flag); + return dma_alloc_coherent(dev->dma_device, size, dma_handle, flag); } /** @@ -3196,7 +3200,7 @@ static inline void ib_dma_free_coherent(struct ib_device *dev, size_t size, void *cpu_addr, dma_addr_t dma_handle) { - dma_free_coherent(&dev->dev, size, cpu_addr, dma_handle); + dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle); } /** |