From: Christophe JAILLET Date: Thu, 20 Aug 2020 15:06:43 +0000 (+0200) Subject: rtw88: switch from 'pci_' to 'dma_' API X-Git-Tag: v5.10.7~1401^2~309^2~132 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=24712ea996d80238d9bd683fb60d35cf472c4294;p=platform%2Fkernel%2Flinux-rpi.git rtw88: switch from 'pci_' to 'dma_' API 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 'rtw_pci_init_tx_ring()' and 'rtw_pci_init_rx_ring()' GFP_KERNEL can be used because both functions are called from a probe function and no spinlock is taken. The call chain is: rtw_pci_probe --> rtw_pci_setup_resource --> rtw_pci_init --> rtw_pci_init_trx_ring --> rtw_pci_init_tx_ring --> rtw_pci_init_rx_ring @@ @@ - 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 Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20200820150643.148219-1-christophe.jaillet@wanadoo.fr --- diff --git a/drivers/net/wireless/realtek/rtw88/pci.c b/drivers/net/wireless/realtek/rtw88/pci.c index 3413973..135dd33 100644 --- a/drivers/net/wireless/realtek/rtw88/pci.c +++ b/drivers/net/wireless/realtek/rtw88/pci.c @@ -109,7 +109,7 @@ static void rtw_pci_free_tx_ring_skbs(struct rtw_dev *rtwdev, tx_data = rtw_pci_get_tx_data(skb); dma = tx_data->dma; - pci_unmap_single(pdev, dma, skb->len, PCI_DMA_TODEVICE); + dma_unmap_single(&pdev->dev, dma, skb->len, DMA_TO_DEVICE); dev_kfree_skb_any(skb); } } @@ -125,7 +125,7 @@ static void rtw_pci_free_tx_ring(struct rtw_dev *rtwdev, rtw_pci_free_tx_ring_skbs(rtwdev, tx_ring); /* free the ring itself */ - pci_free_consistent(pdev, ring_sz, head, tx_ring->r.dma); + dma_free_coherent(&pdev->dev, ring_sz, head, tx_ring->r.dma); tx_ring->r.head = NULL; } @@ -144,7 +144,7 @@ static void rtw_pci_free_rx_ring_skbs(struct rtw_dev *rtwdev, continue; dma = *((dma_addr_t *)skb->cb); - pci_unmap_single(pdev, dma, buf_sz, PCI_DMA_FROMDEVICE); + dma_unmap_single(&pdev->dev, dma, buf_sz, DMA_FROM_DEVICE); dev_kfree_skb(skb); rx_ring->buf[i] = NULL; } @@ -159,7 +159,7 @@ static void rtw_pci_free_rx_ring(struct rtw_dev *rtwdev, rtw_pci_free_rx_ring_skbs(rtwdev, rx_ring); - pci_free_consistent(pdev, ring_sz, head, rx_ring->r.dma); + dma_free_coherent(&pdev->dev, ring_sz, head, rx_ring->r.dma); } static void rtw_pci_free_trx_ring(struct rtw_dev *rtwdev) @@ -194,7 +194,7 @@ static int rtw_pci_init_tx_ring(struct rtw_dev *rtwdev, return -EINVAL; } - head = pci_zalloc_consistent(pdev, ring_sz, &dma); + head = dma_alloc_coherent(&pdev->dev, ring_sz, &dma, GFP_KERNEL); if (!head) { rtw_err(rtwdev, "failed to allocate tx ring\n"); return -ENOMEM; @@ -223,8 +223,8 @@ static int rtw_pci_reset_rx_desc(struct rtw_dev *rtwdev, struct sk_buff *skb, if (!skb) return -EINVAL; - dma = pci_map_single(pdev, skb->data, buf_sz, PCI_DMA_FROMDEVICE); - if (pci_dma_mapping_error(pdev, dma)) + dma = dma_map_single(&pdev->dev, skb->data, buf_sz, DMA_FROM_DEVICE); + if (dma_mapping_error(&pdev->dev, dma)) return -EBUSY; *((dma_addr_t *)skb->cb) = dma; @@ -272,7 +272,7 @@ static int rtw_pci_init_rx_ring(struct rtw_dev *rtwdev, return -EINVAL; } - head = pci_zalloc_consistent(pdev, ring_sz, &dma); + head = dma_alloc_coherent(&pdev->dev, ring_sz, &dma, GFP_KERNEL); if (!head) { rtw_err(rtwdev, "failed to allocate rx ring\n"); return -ENOMEM; @@ -311,11 +311,11 @@ err_out: if (!skb) continue; dma = *((dma_addr_t *)skb->cb); - pci_unmap_single(pdev, dma, buf_sz, PCI_DMA_FROMDEVICE); + dma_unmap_single(&pdev->dev, dma, buf_sz, DMA_FROM_DEVICE); dev_kfree_skb_any(skb); rx_ring->buf[i] = NULL; } - pci_free_consistent(pdev, ring_sz, head, dma); + dma_free_coherent(&pdev->dev, ring_sz, head, dma); rtw_err(rtwdev, "failed to init rx buffer\n"); @@ -675,8 +675,7 @@ static void rtw_pci_release_rsvd_page(struct rtw_pci *rtwpci, tx_data = rtw_pci_get_tx_data(prev); dma = tx_data->dma; - pci_unmap_single(rtwpci->pdev, dma, prev->len, - PCI_DMA_TODEVICE); + dma_unmap_single(&rtwpci->pdev->dev, dma, prev->len, DMA_TO_DEVICE); dev_kfree_skb_any(prev); } @@ -755,9 +754,9 @@ static int rtw_pci_tx_write_data(struct rtw_dev *rtwdev, memset(pkt_desc, 0, tx_pkt_desc_sz); pkt_info->qsel = rtw_pci_get_tx_qsel(skb, queue); rtw_tx_fill_tx_desc(pkt_info, skb); - dma = pci_map_single(rtwpci->pdev, skb->data, skb->len, - PCI_DMA_TODEVICE); - if (pci_dma_mapping_error(rtwpci->pdev, dma)) + dma = dma_map_single(&rtwpci->pdev->dev, skb->data, skb->len, + DMA_TO_DEVICE); + if (dma_mapping_error(&rtwpci->pdev->dev, dma)) return -EBUSY; /* after this we got dma mapped, there is no way back */ @@ -896,8 +895,8 @@ static void rtw_pci_tx_isr(struct rtw_dev *rtwdev, struct rtw_pci *rtwpci, break; } tx_data = rtw_pci_get_tx_data(skb); - pci_unmap_single(rtwpci->pdev, tx_data->dma, skb->len, - PCI_DMA_TODEVICE); + dma_unmap_single(&rtwpci->pdev->dev, tx_data->dma, skb->len, + DMA_TO_DEVICE); /* just free command packets from host to card */ if (hw_queue == RTW_TX_QUEUE_H2C) {