diff options
Diffstat (limited to 'drivers/infiniband/sw/rdmavt')
| -rw-r--r-- | drivers/infiniband/sw/rdmavt/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/infiniband/sw/rdmavt/Makefile | 2 | ||||
| -rw-r--r-- | drivers/infiniband/sw/rdmavt/dma.c | 198 | ||||
| -rw-r--r-- | drivers/infiniband/sw/rdmavt/dma.h | 53 | ||||
| -rw-r--r-- | drivers/infiniband/sw/rdmavt/mr.c | 8 | ||||
| -rw-r--r-- | drivers/infiniband/sw/rdmavt/vt.c | 4 | ||||
| -rw-r--r-- | drivers/infiniband/sw/rdmavt/vt.h | 1 |
7 files changed, 8 insertions, 259 deletions
diff --git a/drivers/infiniband/sw/rdmavt/Kconfig b/drivers/infiniband/sw/rdmavt/Kconfig index 1da8d01a6855..fdd001ce13d8 100644 --- a/drivers/infiniband/sw/rdmavt/Kconfig +++ b/drivers/infiniband/sw/rdmavt/Kconfig @@ -1,5 +1,6 @@ config INFINIBAND_RDMAVT tristate "RDMA verbs transport library" depends on 64BIT + select DMA_VIRT_OPS ---help--- This is a common software verbs provider for RDMA networks. diff --git a/drivers/infiniband/sw/rdmavt/Makefile b/drivers/infiniband/sw/rdmavt/Makefile index c33a4f84413c..78b276a90401 100644 --- a/drivers/infiniband/sw/rdmavt/Makefile +++ b/drivers/infiniband/sw/rdmavt/Makefile @@ -7,7 +7,7 @@ # obj-$(CONFIG_INFINIBAND_RDMAVT) += rdmavt.o -rdmavt-y := vt.o ah.o cq.o dma.o mad.o mcast.o mmap.o mr.o pd.o qp.o \ +rdmavt-y := vt.o ah.o cq.o mad.o mcast.o mmap.o mr.o pd.o qp.o \ rc.o srq.o trace.o CFLAGS_trace.o = -I$(src) diff --git a/drivers/infiniband/sw/rdmavt/dma.c b/drivers/infiniband/sw/rdmavt/dma.c deleted file mode 100644 index f2cefb0d9180..000000000000 --- a/drivers/infiniband/sw/rdmavt/dma.c +++ /dev/null @@ -1,198 +0,0 @@ -/* - * Copyright(c) 2016 Intel Corporation. - * - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * BSD LICENSE - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * - Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ -#include <linux/types.h> -#include <linux/scatterlist.h> -#include <rdma/ib_verbs.h> - -#include "dma.h" - -#define BAD_DMA_ADDRESS ((u64)0) - -/* - * The following functions implement driver specific replacements - * for the ib_dma_*() functions. - * - * These functions return kernel virtual addresses instead of - * device bus addresses since the driver uses the CPU to copy - * data instead of using hardware DMA. - */ - -static int rvt_mapping_error(struct ib_device *dev, u64 dma_addr) -{ - return dma_addr == BAD_DMA_ADDRESS; -} - -static u64 rvt_dma_map_single(struct ib_device *dev, void *cpu_addr, - size_t size, enum dma_data_direction direction) -{ - if (WARN_ON(!valid_dma_direction(direction))) - return BAD_DMA_ADDRESS; - - return (u64)cpu_addr; -} - -static void rvt_dma_unmap_single(struct ib_device *dev, u64 addr, size_t size, - enum dma_data_direction direction) -{ - /* This is a stub, nothing to be done here */ -} - -static u64 rvt_dma_map_page(struct ib_device *dev, struct page *page, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ - u64 addr; - - if (WARN_ON(!valid_dma_direction(direction))) - return BAD_DMA_ADDRESS; - - addr = (u64)page_address(page); - if (addr) - addr += offset; - - return addr; -} - -static void rvt_dma_unmap_page(struct ib_device *dev, u64 addr, size_t size, - enum dma_data_direction direction) -{ - /* This is a stub, nothing to be done here */ -} - -static int rvt_map_sg(struct ib_device *dev, struct scatterlist *sgl, - int nents, enum dma_data_direction direction) -{ - struct scatterlist *sg; - u64 addr; - int i; - int ret = nents; - - if (WARN_ON(!valid_dma_direction(direction))) - return 0; - - for_each_sg(sgl, sg, nents, i) { - addr = (u64)page_address(sg_page(sg)); - if (!addr) { - ret = 0; - break; - } - sg->dma_address = addr + sg->offset; -#ifdef CONFIG_NEED_SG_DMA_LENGTH - sg->dma_length = sg->length; -#endif - } - return ret; -} - -static void rvt_unmap_sg(struct ib_device *dev, - struct scatterlist *sg, int nents, - enum dma_data_direction direction) -{ - /* This is a stub, nothing to be done here */ -} - -static int rvt_map_sg_attrs(struct ib_device *dev, struct scatterlist *sgl, - int nents, enum dma_data_direction direction, - unsigned long attrs) -{ - return rvt_map_sg(dev, sgl, nents, direction); -} - -static void rvt_unmap_sg_attrs(struct ib_device *dev, - struct scatterlist *sg, int nents, - enum dma_data_direction direction, - unsigned long attrs) -{ - return rvt_unmap_sg(dev, sg, nents, direction); -} - -static void rvt_sync_single_for_cpu(struct ib_device *dev, u64 addr, - size_t size, enum dma_data_direction dir) -{ -} - -static void rvt_sync_single_for_device(struct ib_device *dev, u64 addr, - size_t size, - enum dma_data_direction dir) -{ -} - -static void *rvt_dma_alloc_coherent(struct ib_device *dev, size_t size, - u64 *dma_handle, gfp_t flag) -{ - struct page *p; - void *addr = NULL; - - p = alloc_pages(flag, get_order(size)); - if (p) - addr = page_address(p); - if (dma_handle) - *dma_handle = (u64)addr; - return addr; -} - -static void rvt_dma_free_coherent(struct ib_device *dev, size_t size, - void *cpu_addr, u64 dma_handle) -{ - free_pages((unsigned long)cpu_addr, get_order(size)); -} - -struct ib_dma_mapping_ops rvt_default_dma_mapping_ops = { - .mapping_error = rvt_mapping_error, - .map_single = rvt_dma_map_single, - .unmap_single = rvt_dma_unmap_single, - .map_page = rvt_dma_map_page, - .unmap_page = rvt_dma_unmap_page, - .map_sg = rvt_map_sg, - .unmap_sg = rvt_unmap_sg, - .map_sg_attrs = rvt_map_sg_attrs, - .unmap_sg_attrs = rvt_unmap_sg_attrs, - .sync_single_for_cpu = rvt_sync_single_for_cpu, - .sync_single_for_device = rvt_sync_single_for_device, - .alloc_coherent = rvt_dma_alloc_coherent, - .free_coherent = rvt_dma_free_coherent -}; diff --git a/drivers/infiniband/sw/rdmavt/dma.h b/drivers/infiniband/sw/rdmavt/dma.h deleted file mode 100644 index 979f07e09195..000000000000 --- a/drivers/infiniband/sw/rdmavt/dma.h +++ /dev/null @@ -1,53 +0,0 @@ -#ifndef DEF_RDMAVTDMA_H -#define DEF_RDMAVTDMA_H - -/* - * Copyright(c) 2016 Intel Corporation. - * - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * BSD LICENSE - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * - Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -extern struct ib_dma_mapping_ops rvt_default_dma_mapping_ops; - -#endif /* DEF_RDMAVTDMA_H */ diff --git a/drivers/infiniband/sw/rdmavt/mr.c b/drivers/infiniband/sw/rdmavt/mr.c index c80a69b1ffcb..ae30b6838d79 100644 --- a/drivers/infiniband/sw/rdmavt/mr.c +++ b/drivers/infiniband/sw/rdmavt/mr.c @@ -320,8 +320,8 @@ static void __rvt_free_mr(struct rvt_mr *mr) * @acc: access flags * * Return: the memory region on success, otherwise returns an errno. - * Note that all DMA addresses should be created via the - * struct ib_dma_mapping_ops functions (see dma.c). + * Note that all DMA addresses should be created via the functions in + * struct dma_virt_ops. */ struct ib_mr *rvt_get_dma_mr(struct ib_pd *pd, int acc) { @@ -799,7 +799,7 @@ int rvt_lkey_ok(struct rvt_lkey_table *rkt, struct rvt_pd *pd, /* * We use LKEY == zero for kernel virtual addresses - * (see rvt_get_dma_mr and dma.c). + * (see rvt_get_dma_mr() and dma_virt_ops). */ rcu_read_lock(); if (sge->lkey == 0) { @@ -897,7 +897,7 @@ int rvt_rkey_ok(struct rvt_qp *qp, struct rvt_sge *sge, /* * We use RKEY == zero for kernel virtual addresses - * (see rvt_get_dma_mr and dma.c). + * (see rvt_get_dma_mr() and dma_virt_ops). */ rcu_read_lock(); if (rkey == 0) { diff --git a/drivers/infiniband/sw/rdmavt/vt.c b/drivers/infiniband/sw/rdmavt/vt.c index 1165639a914b..0d7c6bb551d9 100644 --- a/drivers/infiniband/sw/rdmavt/vt.c +++ b/drivers/infiniband/sw/rdmavt/vt.c @@ -47,6 +47,7 @@ #include <linux/module.h> #include <linux/kernel.h> +#include <linux/dma-mapping.h> #include "vt.h" #include "trace.h" @@ -778,8 +779,7 @@ int rvt_register_device(struct rvt_dev_info *rdi) } /* DMA Operations */ - rdi->ibdev.dma_ops = - rdi->ibdev.dma_ops ? : &rvt_default_dma_mapping_ops; + rdi->ibdev.dev.dma_ops = rdi->ibdev.dev.dma_ops ? : &dma_virt_ops; /* Protection Domain */ spin_lock_init(&rdi->n_pds_lock); diff --git a/drivers/infiniband/sw/rdmavt/vt.h b/drivers/infiniband/sw/rdmavt/vt.h index 6b01eaa4461b..f363505312be 100644 --- a/drivers/infiniband/sw/rdmavt/vt.h +++ b/drivers/infiniband/sw/rdmavt/vt.h @@ -50,7 +50,6 @@ #include <rdma/rdma_vt.h> #include <linux/pci.h> -#include "dma.h" #include "pd.h" #include "qp.h" #include "ah.h" |