From: Arthur Kepner Date: Tue, 29 Apr 2008 08:00:34 +0000 (-0700) Subject: IB: expand ib_umem_get() prototype X-Git-Tag: v2.6.26-rc1~552 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cb9fbc5c;p=linux-2.6 IB: expand ib_umem_get() prototype Add a new parameter, dmasync, to the ib_umem_get() prototype. Use dmasync = 1 when mapping user-allocated CQs with ib_umem_get(). Signed-off-by: Arthur Kepner Cc: Tony Luck Cc: Jesse Barnes Cc: Jes Sorensen Cc: Randy Dunlap Cc: Roland Dreier Cc: James Bottomley Cc: David Miller Cc: Benjamin Herrenschmidt Cc: Grant Grundler Cc: Michael Ellerman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c index 4e3128ff73..fe78f7d250 100644 --- a/drivers/infiniband/core/umem.c +++ b/drivers/infiniband/core/umem.c @@ -38,6 +38,7 @@ #include #include #include +#include #include "uverbs.h" @@ -72,9 +73,10 @@ static void __ib_umem_release(struct ib_device *dev, struct ib_umem *umem, int d * @addr: userspace virtual address to start at * @size: length of region to pin * @access: IB_ACCESS_xxx flags for memory being pinned + * @dmasync: flush in-flight DMA when the memory region is written */ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr, - size_t size, int access) + size_t size, int access, int dmasync) { struct ib_umem *umem; struct page **page_list; @@ -87,6 +89,10 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr, int ret; int off; int i; + DEFINE_DMA_ATTRS(attrs); + + if (dmasync) + dma_set_attr(DMA_ATTR_WRITE_BARRIER, &attrs); if (!can_do_mlock()) return ERR_PTR(-EPERM); @@ -174,10 +180,11 @@ struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr, sg_set_page(&chunk->page_list[i], page_list[i + off], PAGE_SIZE, 0); } - chunk->nmap = ib_dma_map_sg(context->device, - &chunk->page_list[0], - chunk->nents, - DMA_BIDIRECTIONAL); + chunk->nmap = ib_dma_map_sg_attrs(context->device, + &chunk->page_list[0], + chunk->nents, + DMA_BIDIRECTIONAL, + &attrs); if (chunk->nmap <= 0) { for (i = 0; i < chunk->nents; ++i) put_page(sg_page(&chunk->page_list[i])); diff --git a/drivers/infiniband/hw/amso1100/c2_provider.c b/drivers/infiniband/hw/amso1100/c2_provider.c index 6af2c0f79a..2acf9b62cf 100644 --- a/drivers/infiniband/hw/amso1100/c2_provider.c +++ b/drivers/infiniband/hw/amso1100/c2_provider.c @@ -452,7 +452,7 @@ static struct ib_mr *c2_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, return ERR_PTR(-ENOMEM); c2mr->pd = c2pd; - c2mr->umem = ib_umem_get(pd->uobject->context, start, length, acc); + c2mr->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0); if (IS_ERR(c2mr->umem)) { err = PTR_ERR(c2mr->umem); kfree(c2mr); diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c index ab4695c1dd..e343e9e648 100644 --- a/drivers/infiniband/hw/cxgb3/iwch_provider.c +++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c @@ -602,7 +602,7 @@ static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, if (!mhp) return ERR_PTR(-ENOMEM); - mhp->umem = ib_umem_get(pd->uobject->context, start, length, acc); + mhp->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0); if (IS_ERR(mhp->umem)) { err = PTR_ERR(mhp->umem); kfree(mhp); diff --git a/drivers/infiniband/hw/ehca/ehca_mrmw.c b/drivers/infiniband/hw/ehca/ehca_mrmw.c index 46ae4eb2c4..f974367cad 100644 --- a/drivers/infiniband/hw/ehca/ehca_mrmw.c +++ b/drivers/infiniband/hw/ehca/ehca_mrmw.c @@ -323,7 +323,7 @@ struct ib_mr *ehca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, } e_mr->umem = ib_umem_get(pd->uobject->context, start, length, - mr_access_flags); + mr_access_flags, 0); if (IS_ERR(e_mr->umem)) { ib_mr = (void *)e_mr->umem; goto reg_user_mr_exit1; diff --git a/drivers/infiniband/hw/ipath/ipath_mr.c b/drivers/infiniband/hw/ipath/ipath_mr.c index db4ba92f79..9d343b7c2f 100644 --- a/drivers/infiniband/hw/ipath/ipath_mr.c +++ b/drivers/infiniband/hw/ipath/ipath_mr.c @@ -195,7 +195,8 @@ struct ib_mr *ipath_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, goto bail; } - umem = ib_umem_get(pd->uobject->context, start, length, mr_access_flags); + umem = ib_umem_get(pd->uobject->context, start, length, + mr_access_flags, 0); if (IS_ERR(umem)) return (void *) umem; diff --git a/drivers/infiniband/hw/mlx4/cq.c b/drivers/infiniband/hw/mlx4/cq.c index 5e570bb0bb..e3dddfc687 100644 --- a/drivers/infiniband/hw/mlx4/cq.c +++ b/drivers/infiniband/hw/mlx4/cq.c @@ -137,7 +137,7 @@ static int mlx4_ib_get_cq_umem(struct mlx4_ib_dev *dev, struct ib_ucontext *cont int err; *umem = ib_umem_get(context, buf_addr, cqe * sizeof (struct mlx4_cqe), - IB_ACCESS_LOCAL_WRITE); + IB_ACCESS_LOCAL_WRITE, 1); if (IS_ERR(*umem)) return PTR_ERR(*umem); diff --git a/drivers/infiniband/hw/mlx4/doorbell.c b/drivers/infiniband/hw/mlx4/doorbell.c index 8e342cc9ba..8aee4233b3 100644 --- a/drivers/infiniband/hw/mlx4/doorbell.c +++ b/drivers/infiniband/hw/mlx4/doorbell.c @@ -63,7 +63,7 @@ int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt, page->user_virt = (virt & PAGE_MASK); page->refcnt = 0; page->umem = ib_umem_get(&context->ibucontext, virt & PAGE_MASK, - PAGE_SIZE, 0); + PAGE_SIZE, 0, 0); if (IS_ERR(page->umem)) { err = PTR_ERR(page->umem); kfree(page); diff --git a/drivers/infiniband/hw/mlx4/mr.c b/drivers/infiniband/hw/mlx4/mr.c index fe2c2e94a5..68e92485fc 100644 --- a/drivers/infiniband/hw/mlx4/mr.c +++ b/drivers/infiniband/hw/mlx4/mr.c @@ -132,7 +132,8 @@ struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, if (!mr) return ERR_PTR(-ENOMEM); - mr->umem = ib_umem_get(pd->uobject->context, start, length, access_flags); + mr->umem = ib_umem_get(pd->uobject->context, start, length, + access_flags, 0); if (IS_ERR(mr->umem)) { err = PTR_ERR(mr->umem); goto err_free; diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c index 80ea8b9e77..8e02ecfec1 100644 --- a/drivers/infiniband/hw/mlx4/qp.c +++ b/drivers/infiniband/hw/mlx4/qp.c @@ -482,7 +482,7 @@ static int create_qp_common(struct mlx4_ib_dev *dev, struct ib_pd *pd, goto err; qp->umem = ib_umem_get(pd->uobject->context, ucmd.buf_addr, - qp->buf_size, 0); + qp->buf_size, 0, 0); if (IS_ERR(qp->umem)) { err = PTR_ERR(qp->umem); goto err; diff --git a/drivers/infiniband/hw/mlx4/srq.c b/drivers/infiniband/hw/mlx4/srq.c index 204619702f..12d6bc6f80 100644 --- a/drivers/infiniband/hw/mlx4/srq.c +++ b/drivers/infiniband/hw/mlx4/srq.c @@ -109,7 +109,7 @@ struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd, } srq->umem = ib_umem_get(pd->uobject->context, ucmd.buf_addr, - buf_size, 0); + buf_size, 0, 0); if (IS_ERR(srq->umem)) { err = PTR_ERR(srq->umem); goto err_srq; diff --git a/drivers/infiniband/hw/mthca/mthca_provider.c b/drivers/infiniband/hw/mthca/mthca_provider.c index 696e1f3023..2a9f460cf0 100644 --- a/drivers/infiniband/hw/mthca/mthca_provider.c +++ b/drivers/infiniband/hw/mthca/mthca_provider.c @@ -1006,17 +1006,23 @@ static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, struct mthca_dev *dev = to_mdev(pd->device); struct ib_umem_chunk *chunk; struct mthca_mr *mr; + struct mthca_reg_mr ucmd; u64 *pages; int shift, n, len; int i, j, k; int err = 0; int write_mtt_size; + if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) + return ERR_PTR(-EFAULT); + mr = kmalloc(sizeof *mr, GFP_KERNEL); if (!mr) return ERR_PTR(-ENOMEM); - mr->umem = ib_umem_get(pd->uobject->context, start, length, acc); + mr->umem = ib_umem_get(pd->uobject->context, start, length, acc, + ucmd.mr_attrs & MTHCA_MR_DMASYNC); + if (IS_ERR(mr->umem)) { err = PTR_ERR(mr->umem); goto err; diff --git a/drivers/infiniband/hw/mthca/mthca_user.h b/drivers/infiniband/hw/mthca/mthca_user.h index 02cc0a766f..f8cb3b664d 100644 --- a/drivers/infiniband/hw/mthca/mthca_user.h +++ b/drivers/infiniband/hw/mthca/mthca_user.h @@ -41,7 +41,7 @@ * Increment this value if any changes that break userspace ABI * compatibility are made. */ -#define MTHCA_UVERBS_ABI_VERSION 1 +#define MTHCA_UVERBS_ABI_VERSION 2 /* * Make sure that all structs defined in this file remain laid out so @@ -61,6 +61,14 @@ struct mthca_alloc_pd_resp { __u32 reserved; }; +struct mthca_reg_mr { + __u32 mr_attrs; +#define MTHCA_MR_DMASYNC 0x1 +/* mark the memory region with a DMA attribute that causes + * in-flight DMA to be flushed when the region is written to */ + __u32 reserved; +}; + struct mthca_create_cq { __u32 lkey; __u32 pdn; diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c index ee74f7c7a6..9ae397a0ff 100644 --- a/drivers/infiniband/hw/nes/nes_verbs.c +++ b/drivers/infiniband/hw/nes/nes_verbs.c @@ -2377,7 +2377,7 @@ static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, u8 single_page = 1; u8 stag_key; - region = ib_umem_get(pd->uobject->context, start, length, acc); + region = ib_umem_get(pd->uobject->context, start, length, acc, 0); if (IS_ERR(region)) { return (struct ib_mr *)region; } diff --git a/include/rdma/ib_umem.h b/include/rdma/ib_umem.h index 22298423cf..9ee0d2e51b 100644 --- a/include/rdma/ib_umem.h +++ b/include/rdma/ib_umem.h @@ -62,7 +62,7 @@ struct ib_umem_chunk { #ifdef CONFIG_INFINIBAND_USER_MEM struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr, - size_t size, int access); + size_t size, int access, int dmasync); void ib_umem_release(struct ib_umem *umem); int ib_umem_page_count(struct ib_umem *umem); @@ -72,7 +72,7 @@ int ib_umem_page_count(struct ib_umem *umem); static inline struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr, size_t size, - int access) { + int access, int dmasync) { return ERR_PTR(-EINVAL); } static inline void ib_umem_release(struct ib_umem *umem) { } diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 2dcbecce3f..911a661b72 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -1542,6 +1542,24 @@ static inline void ib_dma_unmap_single(struct ib_device *dev, dma_unmap_single(dev->dma_device, addr, size, direction); } +static inline u64 ib_dma_map_single_attrs(struct ib_device *dev, + void *cpu_addr, size_t size, + enum dma_data_direction direction, + struct dma_attrs *attrs) +{ + return dma_map_single_attrs(dev->dma_device, cpu_addr, size, + direction, attrs); +} + +static inline void ib_dma_unmap_single_attrs(struct ib_device *dev, + u64 addr, size_t size, + enum dma_data_direction direction, + struct dma_attrs *attrs) +{ + return dma_unmap_single_attrs(dev->dma_device, addr, size, + direction, attrs); +} + /** * ib_dma_map_page - Map a physical page to DMA address * @dev: The device for which the dma_addr is to be created @@ -1611,6 +1629,21 @@ static inline void ib_dma_unmap_sg(struct ib_device *dev, dma_unmap_sg(dev->dma_device, sg, nents, direction); } +static inline int ib_dma_map_sg_attrs(struct ib_device *dev, + struct scatterlist *sg, int nents, + enum dma_data_direction direction, + struct dma_attrs *attrs) +{ + return dma_map_sg_attrs(dev->dma_device, sg, nents, direction, attrs); +} + +static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev, + struct scatterlist *sg, int nents, + enum dma_data_direction direction, + struct dma_attrs *attrs) +{ + dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction, attrs); +} /** * ib_sg_dma_address - Return the DMA address from a scatter/gather entry * @dev: The device for which the DMA addresses were created