These requests have been superseded by dma-direct requests and are therefore no longer needed.
Signed-off-by: Logan Gunthorpe <[email protected]> --- drivers/nvme/host/core.c | 2 -- drivers/nvme/host/nvme.h | 3 +-- drivers/nvme/host/pci.c | 27 ++++++++++----------------- 3 files changed, 11 insertions(+), 21 deletions(-) diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 8e876417c44b..63d132c478b4 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -3257,8 +3257,6 @@ static int nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid) } blk_queue_flag_set(QUEUE_FLAG_NONROT, ns->queue); - if (ctrl->ops->flags & NVME_F_PCI_P2PDMA) - blk_queue_flag_set(QUEUE_FLAG_PCI_P2PDMA, ns->queue); if (ctrl->ops->flags & NVME_F_DMA_DIRECT) blk_queue_flag_set(QUEUE_FLAG_DMA_DIRECT, ns->queue); diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index f1dddc95c6a8..d103cecc14dd 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -361,8 +361,7 @@ struct nvme_ctrl_ops { unsigned int flags; #define NVME_F_FABRICS (1 << 0) #define NVME_F_METADATA_SUPPORTED (1 << 1) -#define NVME_F_PCI_P2PDMA (1 << 2) -#define NVME_F_DMA_DIRECT (1 << 3) +#define NVME_F_DMA_DIRECT (1 << 2) int (*reg_read32)(struct nvme_ctrl *ctrl, u32 off, u32 *val); int (*reg_write32)(struct nvme_ctrl *ctrl, u32 off, u32 val); int (*reg_read64)(struct nvme_ctrl *ctrl, u32 off, u64 *val); diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 5957f3a4f261..7f806e76230a 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -564,9 +564,8 @@ static void nvme_unmap_data(struct nvme_dev *dev, struct request *req) WARN_ON_ONCE(!iod->nents); - /* P2PDMA requests do not need to be unmapped */ - if (!is_pci_p2pdma_page(sg_page(iod->sg)) && - !blk_rq_is_dma_direct(req)) + /* DMA direct requests do not need to be unmapped */ + if (!blk_rq_is_dma_direct(req)) dma_unmap_sg(dev->dev, iod->sg, iod->nents, rq_dma_dir(req)); @@ -828,16 +827,14 @@ static blk_status_t nvme_map_data(struct nvme_dev *dev, struct request *req, if (blk_rq_nr_phys_segments(req) == 1 && !blk_rq_is_dma_direct(req)) { struct bio_vec bv = req_bvec(req); - if (!is_pci_p2pdma_page(bv.bv_page)) { - if (bv.bv_offset + bv.bv_len <= dev->ctrl.page_size * 2) - return nvme_setup_prp_simple(dev, req, - &cmnd->rw, &bv); + if (bv.bv_offset + bv.bv_len <= dev->ctrl.page_size * 2) + return nvme_setup_prp_simple(dev, req, + &cmnd->rw, &bv); - if (iod->nvmeq->qid && - dev->ctrl.sgls & ((1 << 0) | (1 << 1))) - return nvme_setup_sgl_simple(dev, req, - &cmnd->rw, &bv); - } + if (iod->nvmeq->qid && + dev->ctrl.sgls & ((1 << 0) | (1 << 1))) + return nvme_setup_sgl_simple(dev, req, + &cmnd->rw, &bv); } iod->dma_len = 0; @@ -849,10 +846,7 @@ static blk_status_t nvme_map_data(struct nvme_dev *dev, struct request *req, if (!iod->nents) goto out; - if (is_pci_p2pdma_page(sg_page(iod->sg))) - nr_mapped = pci_p2pdma_map_sg(dev->dev, iod->sg, iod->nents, - rq_dma_dir(req)); - else if (blk_rq_is_dma_direct(req)) + if (blk_rq_is_dma_direct(req)) nr_mapped = iod->nents; else nr_mapped = dma_map_sg_attrs(dev->dev, iod->sg, iod->nents, @@ -2642,7 +2636,6 @@ static const struct nvme_ctrl_ops nvme_pci_ctrl_ops = { .name = "pcie", .module = THIS_MODULE, .flags = NVME_F_METADATA_SUPPORTED | - NVME_F_PCI_P2PDMA | NVME_F_DMA_DIRECT, .reg_read32 = nvme_pci_reg_read32, .reg_write32 = nvme_pci_reg_write32, -- 2.20.1
