From: Christophe JAILLET <christophe.jaillet@wanadoo.fr> To: jiri@nvidia.com, idosch@nvidia.com, davem@davemloft.net, kuba@kernel.org Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Christophe JAILLET <christophe.jaillet@wanadoo.fr> Subject: [PATCH] mlxsw: pci: switch from 'pci_' to 'dma_' API Date: Thu, 14 Jan 2021 09:47:57 +0100 [thread overview] Message-ID: <20210114084757.490540-1-christophe.jaillet@wanadoo.fr> (raw) The wrappers in include/linux/pci-dma-compat.h should go away. The patch has been generated with the coccinelle script below and has been hand modified to replace GFP_ with a correct flag. It has been compile tested. When memory is allocated in 'mlxsw_pci_queue_init()' and 'mlxsw_pci_fw_area_init()' GFP_KERNEL can be used because both functions are already using this flag and no lock is acquired. When memory is allocated in 'mlxsw_pci_mbox_alloc()' GFP_KERNEL can be used because it is only called from the probe function and no lock is acquired in the between. The call chain is: --> mlxsw_pci_probe() --> mlxsw_pci_cmd_init() --> mlxsw_pci_mbox_alloc() While at it, also replace the 'dma_set_mask/dma_set_coherent_mask' sequence by a less verbose 'dma_set_mask_and_coherent() call. @@ @@ - PCI_DMA_BIDIRECTIONAL + DMA_BIDIRECTIONAL @@ @@ - PCI_DMA_TODEVICE + DMA_TO_DEVICE @@ @@ - PCI_DMA_FROMDEVICE + DMA_FROM_DEVICE @@ @@ - PCI_DMA_NONE + DMA_NONE @@ expression e1, e2, e3; @@ - pci_alloc_consistent(e1, e2, e3) + dma_alloc_coherent(&e1->dev, e2, e3, GFP_) @@ expression e1, e2, e3; @@ - pci_zalloc_consistent(e1, e2, e3) + dma_alloc_coherent(&e1->dev, e2, e3, GFP_) @@ expression e1, e2, e3, e4; @@ - pci_free_consistent(e1, e2, e3, e4) + dma_free_coherent(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_map_single(e1, e2, e3, e4) + dma_map_single(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_unmap_single(e1, e2, e3, e4) + dma_unmap_single(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4, e5; @@ - pci_map_page(e1, e2, e3, e4, e5) + dma_map_page(&e1->dev, e2, e3, e4, e5) @@ expression e1, e2, e3, e4; @@ - pci_unmap_page(e1, e2, e3, e4) + dma_unmap_page(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_map_sg(e1, e2, e3, e4) + dma_map_sg(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_unmap_sg(e1, e2, e3, e4) + dma_unmap_sg(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_single_for_cpu(e1, e2, e3, e4) + dma_sync_single_for_cpu(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_single_for_device(e1, e2, e3, e4) + dma_sync_single_for_device(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_sg_for_cpu(e1, e2, e3, e4) + dma_sync_sg_for_cpu(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_sg_for_device(e1, e2, e3, e4) + dma_sync_sg_for_device(&e1->dev, e2, e3, e4) @@ expression e1, e2; @@ - pci_dma_mapping_error(e1, e2) + dma_mapping_error(&e1->dev, e2) @@ expression e1, e2; @@ - pci_set_dma_mask(e1, e2) + dma_set_mask(&e1->dev, e2) @@ expression e1, e2; @@ - pci_set_consistent_dma_mask(e1, e2) + dma_set_coherent_mask(&e1->dev, e2) Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> --- If needed, see post from Christoph Hellwig on the kernel-janitors ML: https://marc.info/?l=kernel-janitors&m=158745678307186&w=4 --- drivers/net/ethernet/mellanox/mlxsw/pci.c | 56 ++++++++++------------- 1 file changed, 25 insertions(+), 31 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.c b/drivers/net/ethernet/mellanox/mlxsw/pci.c index 4eeae8d78006..d0052537e627 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/pci.c +++ b/drivers/net/ethernet/mellanox/mlxsw/pci.c @@ -323,8 +323,8 @@ static int mlxsw_pci_wqe_frag_map(struct mlxsw_pci *mlxsw_pci, char *wqe, struct pci_dev *pdev = mlxsw_pci->pdev; dma_addr_t mapaddr; - mapaddr = pci_map_single(pdev, frag_data, frag_len, direction); - if (unlikely(pci_dma_mapping_error(pdev, mapaddr))) { + mapaddr = dma_map_single(&pdev->dev, frag_data, frag_len, direction); + if (unlikely(dma_mapping_error(&pdev->dev, mapaddr))) { dev_err_ratelimited(&pdev->dev, "failed to dma map tx frag\n"); return -EIO; } @@ -342,7 +342,7 @@ static void mlxsw_pci_wqe_frag_unmap(struct mlxsw_pci *mlxsw_pci, char *wqe, if (!frag_len) return; - pci_unmap_single(pdev, mapaddr, frag_len, direction); + dma_unmap_single(&pdev->dev, mapaddr, frag_len, direction); } static int mlxsw_pci_rdq_skb_alloc(struct mlxsw_pci *mlxsw_pci, @@ -858,9 +858,9 @@ static int mlxsw_pci_queue_init(struct mlxsw_pci *mlxsw_pci, char *mbox, tasklet_setup(&q->tasklet, q_ops->tasklet); mem_item->size = MLXSW_PCI_AQ_SIZE; - mem_item->buf = pci_alloc_consistent(mlxsw_pci->pdev, - mem_item->size, - &mem_item->mapaddr); + mem_item->buf = dma_alloc_coherent(&mlxsw_pci->pdev->dev, + mem_item->size, &mem_item->mapaddr, + GFP_KERNEL); if (!mem_item->buf) return -ENOMEM; @@ -890,8 +890,8 @@ static int mlxsw_pci_queue_init(struct mlxsw_pci *mlxsw_pci, char *mbox, err_q_ops_init: kfree(q->elem_info); err_elem_info_alloc: - pci_free_consistent(mlxsw_pci->pdev, mem_item->size, - mem_item->buf, mem_item->mapaddr); + dma_free_coherent(&mlxsw_pci->pdev->dev, mem_item->size, + mem_item->buf, mem_item->mapaddr); return err; } @@ -903,8 +903,8 @@ static void mlxsw_pci_queue_fini(struct mlxsw_pci *mlxsw_pci, q_ops->fini(mlxsw_pci, q); kfree(q->elem_info); - pci_free_consistent(mlxsw_pci->pdev, mem_item->size, - mem_item->buf, mem_item->mapaddr); + dma_free_coherent(&mlxsw_pci->pdev->dev, mem_item->size, + mem_item->buf, mem_item->mapaddr); } static int mlxsw_pci_queue_group_init(struct mlxsw_pci *mlxsw_pci, char *mbox, @@ -1273,9 +1273,9 @@ static int mlxsw_pci_fw_area_init(struct mlxsw_pci *mlxsw_pci, char *mbox, mem_item = &mlxsw_pci->fw_area.items[i]; mem_item->size = MLXSW_PCI_PAGE_SIZE; - mem_item->buf = pci_alloc_consistent(mlxsw_pci->pdev, - mem_item->size, - &mem_item->mapaddr); + mem_item->buf = dma_alloc_coherent(&mlxsw_pci->pdev->dev, + mem_item->size, + &mem_item->mapaddr, GFP_KERNEL); if (!mem_item->buf) { err = -ENOMEM; goto err_alloc; @@ -1304,8 +1304,8 @@ static int mlxsw_pci_fw_area_init(struct mlxsw_pci *mlxsw_pci, char *mbox, for (i--; i >= 0; i--) { mem_item = &mlxsw_pci->fw_area.items[i]; - pci_free_consistent(mlxsw_pci->pdev, mem_item->size, - mem_item->buf, mem_item->mapaddr); + dma_free_coherent(&mlxsw_pci->pdev->dev, mem_item->size, + mem_item->buf, mem_item->mapaddr); } kfree(mlxsw_pci->fw_area.items); return err; @@ -1321,8 +1321,8 @@ static void mlxsw_pci_fw_area_fini(struct mlxsw_pci *mlxsw_pci) for (i = 0; i < mlxsw_pci->fw_area.count; i++) { mem_item = &mlxsw_pci->fw_area.items[i]; - pci_free_consistent(mlxsw_pci->pdev, mem_item->size, - mem_item->buf, mem_item->mapaddr); + dma_free_coherent(&mlxsw_pci->pdev->dev, mem_item->size, + mem_item->buf, mem_item->mapaddr); } kfree(mlxsw_pci->fw_area.items); } @@ -1347,8 +1347,8 @@ static int mlxsw_pci_mbox_alloc(struct mlxsw_pci *mlxsw_pci, int err = 0; mbox->size = MLXSW_CMD_MBOX_SIZE; - mbox->buf = pci_alloc_consistent(pdev, MLXSW_CMD_MBOX_SIZE, - &mbox->mapaddr); + mbox->buf = dma_alloc_coherent(&pdev->dev, MLXSW_CMD_MBOX_SIZE, + &mbox->mapaddr, GFP_KERNEL); if (!mbox->buf) { dev_err(&pdev->dev, "Failed allocating memory for mailbox\n"); err = -ENOMEM; @@ -1362,8 +1362,8 @@ static void mlxsw_pci_mbox_free(struct mlxsw_pci *mlxsw_pci, { struct pci_dev *pdev = mlxsw_pci->pdev; - pci_free_consistent(pdev, MLXSW_CMD_MBOX_SIZE, mbox->buf, - mbox->mapaddr); + dma_free_coherent(&pdev->dev, MLXSW_CMD_MBOX_SIZE, mbox->buf, + mbox->mapaddr); } static int mlxsw_pci_sys_ready_wait(struct mlxsw_pci *mlxsw_pci, @@ -1848,17 +1848,11 @@ static int mlxsw_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) goto err_pci_request_regions; } - err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); - if (!err) { - err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); - if (err) { - dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n"); - goto err_pci_set_dma_mask; - } - } else { - err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); + err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + if (err) { + err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); if (err) { - dev_err(&pdev->dev, "pci_set_dma_mask failed\n"); + dev_err(&pdev->dev, "dma_set_mask failed\n"); goto err_pci_set_dma_mask; } } -- 2.27.0
WARNING: multiple messages have this Message-ID (diff)
From: Christophe JAILLET <christophe.jaillet@wanadoo.fr> To: jiri@nvidia.com, idosch@nvidia.com, davem@davemloft.net, kuba@kernel.org Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Christophe JAILLET <christophe.jaillet@wanadoo.fr> Subject: [PATCH] mlxsw: pci: switch from 'pci_' to 'dma_' API Date: Thu, 14 Jan 2021 08:47:57 +0000 [thread overview] Message-ID: <20210114084757.490540-1-christophe.jaillet@wanadoo.fr> (raw) The wrappers in include/linux/pci-dma-compat.h should go away. The patch has been generated with the coccinelle script below and has been hand modified to replace GFP_ with a correct flag. It has been compile tested. When memory is allocated in 'mlxsw_pci_queue_init()' and 'mlxsw_pci_fw_area_init()' GFP_KERNEL can be used because both functions are already using this flag and no lock is acquired. When memory is allocated in 'mlxsw_pci_mbox_alloc()' GFP_KERNEL can be used because it is only called from the probe function and no lock is acquired in the between. The call chain is: --> mlxsw_pci_probe() --> mlxsw_pci_cmd_init() --> mlxsw_pci_mbox_alloc() While at it, also replace the 'dma_set_mask/dma_set_coherent_mask' sequence by a less verbose 'dma_set_mask_and_coherent() call. @@ @@ - PCI_DMA_BIDIRECTIONAL + DMA_BIDIRECTIONAL @@ @@ - PCI_DMA_TODEVICE + DMA_TO_DEVICE @@ @@ - PCI_DMA_FROMDEVICE + DMA_FROM_DEVICE @@ @@ - PCI_DMA_NONE + DMA_NONE @@ expression e1, e2, e3; @@ - pci_alloc_consistent(e1, e2, e3) + dma_alloc_coherent(&e1->dev, e2, e3, GFP_) @@ expression e1, e2, e3; @@ - pci_zalloc_consistent(e1, e2, e3) + dma_alloc_coherent(&e1->dev, e2, e3, GFP_) @@ expression e1, e2, e3, e4; @@ - pci_free_consistent(e1, e2, e3, e4) + dma_free_coherent(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_map_single(e1, e2, e3, e4) + dma_map_single(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_unmap_single(e1, e2, e3, e4) + dma_unmap_single(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4, e5; @@ - pci_map_page(e1, e2, e3, e4, e5) + dma_map_page(&e1->dev, e2, e3, e4, e5) @@ expression e1, e2, e3, e4; @@ - pci_unmap_page(e1, e2, e3, e4) + dma_unmap_page(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_map_sg(e1, e2, e3, e4) + dma_map_sg(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_unmap_sg(e1, e2, e3, e4) + dma_unmap_sg(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_single_for_cpu(e1, e2, e3, e4) + dma_sync_single_for_cpu(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_single_for_device(e1, e2, e3, e4) + dma_sync_single_for_device(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_sg_for_cpu(e1, e2, e3, e4) + dma_sync_sg_for_cpu(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_sg_for_device(e1, e2, e3, e4) + dma_sync_sg_for_device(&e1->dev, e2, e3, e4) @@ expression e1, e2; @@ - pci_dma_mapping_error(e1, e2) + dma_mapping_error(&e1->dev, e2) @@ expression e1, e2; @@ - pci_set_dma_mask(e1, e2) + dma_set_mask(&e1->dev, e2) @@ expression e1, e2; @@ - pci_set_consistent_dma_mask(e1, e2) + dma_set_coherent_mask(&e1->dev, e2) Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> --- If needed, see post from Christoph Hellwig on the kernel-janitors ML: https://marc.info/?l=kernel-janitors&m\x158745678307186&w=4 --- drivers/net/ethernet/mellanox/mlxsw/pci.c | 56 ++++++++++------------- 1 file changed, 25 insertions(+), 31 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.c b/drivers/net/ethernet/mellanox/mlxsw/pci.c index 4eeae8d78006..d0052537e627 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/pci.c +++ b/drivers/net/ethernet/mellanox/mlxsw/pci.c @@ -323,8 +323,8 @@ static int mlxsw_pci_wqe_frag_map(struct mlxsw_pci *mlxsw_pci, char *wqe, struct pci_dev *pdev = mlxsw_pci->pdev; dma_addr_t mapaddr; - mapaddr = pci_map_single(pdev, frag_data, frag_len, direction); - if (unlikely(pci_dma_mapping_error(pdev, mapaddr))) { + mapaddr = dma_map_single(&pdev->dev, frag_data, frag_len, direction); + if (unlikely(dma_mapping_error(&pdev->dev, mapaddr))) { dev_err_ratelimited(&pdev->dev, "failed to dma map tx frag\n"); return -EIO; } @@ -342,7 +342,7 @@ static void mlxsw_pci_wqe_frag_unmap(struct mlxsw_pci *mlxsw_pci, char *wqe, if (!frag_len) return; - pci_unmap_single(pdev, mapaddr, frag_len, direction); + dma_unmap_single(&pdev->dev, mapaddr, frag_len, direction); } static int mlxsw_pci_rdq_skb_alloc(struct mlxsw_pci *mlxsw_pci, @@ -858,9 +858,9 @@ static int mlxsw_pci_queue_init(struct mlxsw_pci *mlxsw_pci, char *mbox, tasklet_setup(&q->tasklet, q_ops->tasklet); mem_item->size = MLXSW_PCI_AQ_SIZE; - mem_item->buf = pci_alloc_consistent(mlxsw_pci->pdev, - mem_item->size, - &mem_item->mapaddr); + mem_item->buf = dma_alloc_coherent(&mlxsw_pci->pdev->dev, + mem_item->size, &mem_item->mapaddr, + GFP_KERNEL); if (!mem_item->buf) return -ENOMEM; @@ -890,8 +890,8 @@ static int mlxsw_pci_queue_init(struct mlxsw_pci *mlxsw_pci, char *mbox, err_q_ops_init: kfree(q->elem_info); err_elem_info_alloc: - pci_free_consistent(mlxsw_pci->pdev, mem_item->size, - mem_item->buf, mem_item->mapaddr); + dma_free_coherent(&mlxsw_pci->pdev->dev, mem_item->size, + mem_item->buf, mem_item->mapaddr); return err; } @@ -903,8 +903,8 @@ static void mlxsw_pci_queue_fini(struct mlxsw_pci *mlxsw_pci, q_ops->fini(mlxsw_pci, q); kfree(q->elem_info); - pci_free_consistent(mlxsw_pci->pdev, mem_item->size, - mem_item->buf, mem_item->mapaddr); + dma_free_coherent(&mlxsw_pci->pdev->dev, mem_item->size, + mem_item->buf, mem_item->mapaddr); } static int mlxsw_pci_queue_group_init(struct mlxsw_pci *mlxsw_pci, char *mbox, @@ -1273,9 +1273,9 @@ static int mlxsw_pci_fw_area_init(struct mlxsw_pci *mlxsw_pci, char *mbox, mem_item = &mlxsw_pci->fw_area.items[i]; mem_item->size = MLXSW_PCI_PAGE_SIZE; - mem_item->buf = pci_alloc_consistent(mlxsw_pci->pdev, - mem_item->size, - &mem_item->mapaddr); + mem_item->buf = dma_alloc_coherent(&mlxsw_pci->pdev->dev, + mem_item->size, + &mem_item->mapaddr, GFP_KERNEL); if (!mem_item->buf) { err = -ENOMEM; goto err_alloc; @@ -1304,8 +1304,8 @@ static int mlxsw_pci_fw_area_init(struct mlxsw_pci *mlxsw_pci, char *mbox, for (i--; i >= 0; i--) { mem_item = &mlxsw_pci->fw_area.items[i]; - pci_free_consistent(mlxsw_pci->pdev, mem_item->size, - mem_item->buf, mem_item->mapaddr); + dma_free_coherent(&mlxsw_pci->pdev->dev, mem_item->size, + mem_item->buf, mem_item->mapaddr); } kfree(mlxsw_pci->fw_area.items); return err; @@ -1321,8 +1321,8 @@ static void mlxsw_pci_fw_area_fini(struct mlxsw_pci *mlxsw_pci) for (i = 0; i < mlxsw_pci->fw_area.count; i++) { mem_item = &mlxsw_pci->fw_area.items[i]; - pci_free_consistent(mlxsw_pci->pdev, mem_item->size, - mem_item->buf, mem_item->mapaddr); + dma_free_coherent(&mlxsw_pci->pdev->dev, mem_item->size, + mem_item->buf, mem_item->mapaddr); } kfree(mlxsw_pci->fw_area.items); } @@ -1347,8 +1347,8 @@ static int mlxsw_pci_mbox_alloc(struct mlxsw_pci *mlxsw_pci, int err = 0; mbox->size = MLXSW_CMD_MBOX_SIZE; - mbox->buf = pci_alloc_consistent(pdev, MLXSW_CMD_MBOX_SIZE, - &mbox->mapaddr); + mbox->buf = dma_alloc_coherent(&pdev->dev, MLXSW_CMD_MBOX_SIZE, + &mbox->mapaddr, GFP_KERNEL); if (!mbox->buf) { dev_err(&pdev->dev, "Failed allocating memory for mailbox\n"); err = -ENOMEM; @@ -1362,8 +1362,8 @@ static void mlxsw_pci_mbox_free(struct mlxsw_pci *mlxsw_pci, { struct pci_dev *pdev = mlxsw_pci->pdev; - pci_free_consistent(pdev, MLXSW_CMD_MBOX_SIZE, mbox->buf, - mbox->mapaddr); + dma_free_coherent(&pdev->dev, MLXSW_CMD_MBOX_SIZE, mbox->buf, + mbox->mapaddr); } static int mlxsw_pci_sys_ready_wait(struct mlxsw_pci *mlxsw_pci, @@ -1848,17 +1848,11 @@ static int mlxsw_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) goto err_pci_request_regions; } - err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); - if (!err) { - err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); - if (err) { - dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n"); - goto err_pci_set_dma_mask; - } - } else { - err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); + err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + if (err) { + err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); if (err) { - dev_err(&pdev->dev, "pci_set_dma_mask failed\n"); + dev_err(&pdev->dev, "dma_set_mask failed\n"); goto err_pci_set_dma_mask; } } -- 2.27.0
next reply other threads:[~2021-01-14 8:50 UTC|newest] Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-01-14 8:47 Christophe JAILLET [this message] 2021-01-14 8:47 ` [PATCH] mlxsw: pci: switch from 'pci_' to 'dma_' API Christophe JAILLET 2021-01-14 9:47 ` Ido Schimmel 2021-01-14 9:47 ` Ido Schimmel 2021-01-15 1:30 ` patchwork-bot+netdevbpf
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