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Searched refs:dma_dev (Results 1 – 25 of 201) sorted by relevance

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/linux/drivers/dma/
H A Dmcf-edma-main.c192 INIT_LIST_HEAD(&mcf_edma->dma_dev.channels); in mcf_edma_probe()
200 vchan_init(&mcf_chan->vchan, &mcf_edma->dma_dev); in mcf_edma_probe()
213 dma_cap_set(DMA_PRIVATE, mcf_edma->dma_dev.cap_mask); in mcf_edma_probe()
214 dma_cap_set(DMA_SLAVE, mcf_edma->dma_dev.cap_mask); in mcf_edma_probe()
215 dma_cap_set(DMA_CYCLIC, mcf_edma->dma_dev.cap_mask); in mcf_edma_probe()
217 mcf_edma->dma_dev.dev = &pdev->dev; in mcf_edma_probe()
218 mcf_edma->dma_dev.device_alloc_chan_resources = in mcf_edma_probe()
220 mcf_edma->dma_dev.device_free_chan_resources = in mcf_edma_probe()
222 mcf_edma->dma_dev.device_config = fsl_edma_slave_config; in mcf_edma_probe()
223 mcf_edma->dma_dev.device_prep_dma_cyclic = in mcf_edma_probe()
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H A Dfsl-edma-main.c265 list_for_each_entry_safe(chan, _chan, &fsl_edma->dma_dev.channels, device_node) { in fsl_edma_xlate()
309 list_for_each_entry_safe(chan, _chan, &fsl_edma->dma_dev.channels, in fsl_edma3_xlate()
789 INIT_LIST_HEAD(&fsl_edma->dma_dev.channels); in fsl_edma_probe()
824 vchan_init(&fsl_chan->vchan, &fsl_edma->dma_dev); in fsl_edma_probe()
836 dma_cap_set(DMA_PRIVATE, fsl_edma->dma_dev.cap_mask); in fsl_edma_probe()
837 dma_cap_set(DMA_SLAVE, fsl_edma->dma_dev.cap_mask); in fsl_edma_probe()
838 dma_cap_set(DMA_CYCLIC, fsl_edma->dma_dev.cap_mask); in fsl_edma_probe()
839 dma_cap_set(DMA_MEMCPY, fsl_edma->dma_dev.cap_mask); in fsl_edma_probe()
841 fsl_edma->dma_dev.dev = &pdev->dev; in fsl_edma_probe()
842 fsl_edma->dma_dev.device_alloc_chan_resources in fsl_edma_probe()
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H A Ddma-axi-dmac.c173 struct dma_device dma_dev; member
180 dma_dev); in chan_to_axi_dmac()
360 dev_dbg(dmac->dma_dev.dev, in axi_dmac_dequeue_partial_xfers()
364 dev_warn(dmac->dma_dev.dev, in axi_dmac_dequeue_partial_xfers()
537 struct device *dev = dmac->dma_dev.dev; in axi_dmac_alloc_desc()
576 struct device *dev = dmac->dma_dev.dev; in axi_dmac_free_desc()
992 struct device *dev = dmac->dma_dev.dev; in axi_dmac_detect_caps()
1016 dev_err(dmac->dma_dev.dev, in axi_dmac_detect_caps()
1024 dev_err(dmac->dma_dev.dev, in axi_dmac_detect_caps()
1071 struct dma_device *dma_dev; in axi_dmac_probe() local
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H A Daltera-msgdma.c812 struct dma_device *dma_dev; in msgdma_probe() local
860 dma_dev = &mdev->dmadev; in msgdma_probe()
863 dma_cap_zero(dma_dev->cap_mask); in msgdma_probe()
864 dma_cap_set(DMA_MEMCPY, dma_dev->cap_mask); in msgdma_probe()
865 dma_cap_set(DMA_SLAVE, dma_dev->cap_mask); in msgdma_probe()
867 dma_dev->src_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_4_BYTES); in msgdma_probe()
868 dma_dev->dst_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_4_BYTES); in msgdma_probe()
869 dma_dev->directions = BIT(DMA_MEM_TO_DEV) | BIT(DMA_DEV_TO_MEM) | in msgdma_probe()
871 dma_dev->residue_granularity = DMA_RESIDUE_GRANULARITY_DESCRIPTOR; in msgdma_probe()
874 INIT_LIST_HEAD(&dma_dev->channels); in msgdma_probe()
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H A Dimg-mdc-dma.c133 struct dma_device dma_dev; member
182 return mdma->dma_dev.dev; in mdma2dev()
816 list_for_each_entry(chan, &mdma->dma_dev.channels, device_node) { in mdc_of_xlate()
912 dma_cap_zero(mdma->dma_dev.cap_mask); in mdc_dma_probe()
913 dma_cap_set(DMA_SLAVE, mdma->dma_dev.cap_mask); in mdc_dma_probe()
914 dma_cap_set(DMA_PRIVATE, mdma->dma_dev.cap_mask); in mdc_dma_probe()
915 dma_cap_set(DMA_CYCLIC, mdma->dma_dev.cap_mask); in mdc_dma_probe()
916 dma_cap_set(DMA_MEMCPY, mdma->dma_dev.cap_mask); in mdc_dma_probe()
946 mdma->dma_dev.dev = &pdev->dev; in mdc_dma_probe()
947 mdma->dma_dev.device_prep_slave_sg = mdc_prep_slave_sg; in mdc_dma_probe()
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H A Dnbpfaxi.c229 struct dma_device dma_dev; member
325 dev_dbg(nbpf->dma_dev.dev, "%s(0x%p + 0x%x) = 0x%x\n", in nbpf_read()
334 dev_dbg(nbpf->dma_dev.dev, "%s(0x%p + 0x%x) = 0x%x\n", in nbpf_write()
400 dev_dbg(chan->nbpf->dma_dev.dev, "%s(): next 0x%x, cur 0x%x\n", __func__, in nbpf_start()
869 dev_dbg(chan->nbpf->dma_dev.dev, "%s(): force-free desc %p cookie %d\n", in nbpf_chan_idle()
1110 dchan = dma_get_any_slave_channel(&nbpf->dma_dev); in nbpf_of_xlate()
1241 dev_warn(nbpf->dma_dev.dev, "DMA error IRQ %u\n", irq); in nbpf_err_irq()
1259 struct dma_device *dma_dev = &nbpf->dma_dev; in nbpf_chan_probe() local
1267 chan->dma_chan.device = dma_dev; in nbpf_chan_probe()
1271 dev_dbg(dma_dev->dev, "%s(): channel %d: -> %p\n", __func__, n, chan->base); in nbpf_chan_probe()
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H A Dep93xx_dma.c234 struct dma_device dma_dev; member
1373 struct dma_device *dma_dev; in ep93xx_dma_of_probe() local
1388 dma_dev = &edma->dma_dev; in ep93xx_dma_of_probe()
1390 INIT_LIST_HEAD(&dma_dev->channels); in ep93xx_dma_of_probe()
1395 edmac->chan.device = dma_dev; in ep93xx_dma_of_probe()
1427 &dma_dev->channels); in ep93xx_dma_of_probe()
1449 dma_cap_mask_t mask = edma->dma_dev.cap_mask; in ep93xx_m2p_dma_of_xlate()
1480 dma_cap_mask_t mask = edma->dma_dev.cap_mask; in ep93xx_m2m_dma_of_xlate()
1505 struct dma_device *dma_dev; in ep93xx_dma_probe() local
1512 dma_dev = &edma->dma_dev; in ep93xx_dma_probe()
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H A Dfsl_raid.c629 struct dma_device *dma_dev; in fsl_re_chan_probe() local
637 dma_dev = &re_priv->dma_dev; in fsl_re_chan_probe()
683 chan->chan.device = dma_dev; in fsl_re_chan_probe()
752 struct dma_device *dma_dev; in fsl_re_probe() local
781 dma_dev = &re_priv->dma_dev; in fsl_re_probe()
782 dma_dev->dev = dev; in fsl_re_probe()
783 INIT_LIST_HEAD(&dma_dev->channels); in fsl_re_probe()
786 dma_dev->device_alloc_chan_resources = fsl_re_alloc_chan_resources; in fsl_re_probe()
787 dma_dev->device_tx_status = fsl_re_tx_status; in fsl_re_probe()
788 dma_dev->device_issue_pending = fsl_re_issue_pending; in fsl_re_probe()
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H A Dmv_xor_v2.c718 struct dma_device *dma_dev; in mv_xor_v2_probe() local
811 dma_dev = &xor_dev->dmadev; in mv_xor_v2_probe()
814 dma_cap_zero(dma_dev->cap_mask); in mv_xor_v2_probe()
815 dma_cap_set(DMA_MEMCPY, dma_dev->cap_mask); in mv_xor_v2_probe()
816 dma_cap_set(DMA_XOR, dma_dev->cap_mask); in mv_xor_v2_probe()
817 dma_cap_set(DMA_INTERRUPT, dma_dev->cap_mask); in mv_xor_v2_probe()
820 INIT_LIST_HEAD(&dma_dev->channels); in mv_xor_v2_probe()
823 dma_dev->device_tx_status = dma_cookie_status; in mv_xor_v2_probe()
824 dma_dev->device_issue_pending = mv_xor_v2_issue_pending; in mv_xor_v2_probe()
825 dma_dev->dev = &pdev->dev; in mv_xor_v2_probe()
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H A Dsprd-dma.c209 struct dma_device dma_dev; member
358 dev_warn(sdev->dma_dev.dev, in sprd_dma_pause_resume()
422 dev_warn(sdev->dma_dev.dev, "incorrect dma interrupt type\n"); in sprd_dma_get_int_type()
481 dev_err(sdev->dma_dev.dev, "invalid channel mode setting %d\n", in sprd_dma_set_2stage_config()
762 dev_err(sdev->dma_dev.dev, "invalid source step\n"); in sprd_dma_fill_desc()
778 dev_err(sdev->dma_dev.dev, "invalid destination step\n"); in sprd_dma_fill_desc()
786 dev_err(sdev->dma_dev.dev, "invalid source datawidth\n"); in sprd_dma_fill_desc()
792 dev_err(sdev->dma_dev.dev, "invalid destination datawidth\n"); in sprd_dma_fill_desc()
1177 dma_cap_set(DMA_MEMCPY, sdev->dma_dev.cap_mask); in sprd_dma_probe()
1179 INIT_LIST_HEAD(&sdev->dma_dev.channels); in sprd_dma_probe()
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H A Dhisi_dma.c161 struct dma_device dma_dev; member
712 vchan_init(&hdma_dev->chan[i].vc, &hdma_dev->dma_dev); in hisi_dma_enable_qps()
824 struct dma_device *dma_dev; in hisi_dma_init_dma_dev() local
826 dma_dev = &hdma_dev->dma_dev; in hisi_dma_init_dma_dev()
827 dma_cap_set(DMA_MEMCPY, dma_dev->cap_mask); in hisi_dma_init_dma_dev()
828 dma_dev->device_free_chan_resources = hisi_dma_free_chan_resources; in hisi_dma_init_dma_dev()
829 dma_dev->device_prep_dma_memcpy = hisi_dma_prep_dma_memcpy; in hisi_dma_init_dma_dev()
830 dma_dev->device_tx_status = hisi_dma_tx_status; in hisi_dma_init_dma_dev()
831 dma_dev->device_issue_pending = hisi_dma_issue_pending; in hisi_dma_init_dma_dev()
832 dma_dev->device_terminate_all = hisi_dma_terminate_all; in hisi_dma_init_dma_dev()
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H A Dxgene-dma.c311 struct dma_device dma_dev[XGENE_DMA_MAX_CHANNEL]; member
1486 struct dma_device *dma_dev) in xgene_dma_set_caps() argument
1489 dma_cap_zero(dma_dev->cap_mask); in xgene_dma_set_caps()
1504 dma_cap_set(DMA_PQ, dma_dev->cap_mask); in xgene_dma_set_caps()
1505 dma_cap_set(DMA_XOR, dma_dev->cap_mask); in xgene_dma_set_caps()
1508 dma_cap_set(DMA_XOR, dma_dev->cap_mask); in xgene_dma_set_caps()
1512 dma_dev->dev = chan->dev; in xgene_dma_set_caps()
1513 dma_dev->device_alloc_chan_resources = xgene_dma_alloc_chan_resources; in xgene_dma_set_caps()
1514 dma_dev->device_free_chan_resources = xgene_dma_free_chan_resources; in xgene_dma_set_caps()
1515 dma_dev->device_issue_pending = xgene_dma_issue_pending; in xgene_dma_set_caps()
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H A Dmv_xor.c1040 struct dma_device *dma_dev; in mv_xor_channel_add() local
1053 dma_dev = &mv_chan->dmadev; in mv_xor_channel_add()
1054 dma_dev->dev = &pdev->dev; in mv_xor_channel_add()
1062 mv_chan->dummy_src_addr = dma_map_single(dma_dev->dev, in mv_xor_channel_add()
1064 if (dma_mapping_error(dma_dev->dev, mv_chan->dummy_src_addr)) in mv_xor_channel_add()
1067 mv_chan->dummy_dst_addr = dma_map_single(dma_dev->dev, in mv_xor_channel_add()
1069 if (dma_mapping_error(dma_dev->dev, mv_chan->dummy_dst_addr)) { in mv_xor_channel_add()
1088 dma_dev->cap_mask = cap_mask; in mv_xor_channel_add()
1090 INIT_LIST_HEAD(&dma_dev->channels); in mv_xor_channel_add()
1093 dma_dev->device_alloc_chan_resources = mv_xor_alloc_chan_resources; in mv_xor_channel_add()
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/linux/block/
H A Dblk-mq-dma.c75 struct device *dma_dev) in blk_can_dma_map_iova() argument
77 return !(req_phys_gap_mask(req) & dma_get_merge_boundary(dma_dev)); in blk_can_dma_map_iova()
87 static bool blk_dma_map_direct(struct request *req, struct device *dma_dev, in blk_dma_map_direct() argument
95 iter->addr = dma_map_phys(dma_dev, vec->paddr, vec->len, in blk_dma_map_direct()
97 if (dma_mapping_error(dma_dev, iter->addr)) { in blk_dma_map_direct()
105 static bool blk_rq_dma_map_iova(struct request *req, struct device *dma_dev, in blk_rq_dma_map_iova() argument
121 error = dma_iova_link(dma_dev, state, vec->paddr, mapped, in blk_rq_dma_map_iova()
128 error = dma_iova_sync(dma_dev, state, 0, mapped); in blk_rq_dma_map_iova()
135 dma_iova_destroy(dma_dev, state, mapped, dir, attrs); in blk_rq_dma_map_iova()
164 static bool blk_dma_map_iter_start(struct request *req, struct device *dma_dev, in blk_dma_map_iter_start() argument
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/linux/drivers/iommu/
H A Diommu-pages.h104 int iommu_pages_start_incoherent(void *virt, struct device *dma_dev);
106 struct device *dma_dev);
112 static inline void iommu_pages_flush_incoherent(struct device *dma_dev, in iommu_pages_flush_incoherent() argument
120 struct device *dma_dev) in iommu_pages_stop_incoherent_list() argument
128 struct device *dma_dev) in iommu_pages_free_incoherent() argument
136 static inline void iommu_pages_flush_incoherent(struct device *dma_dev, in iommu_pages_flush_incoherent() argument
140 dma_sync_single_for_device(dma_dev, (uintptr_t)virt + offset, len, in iommu_pages_flush_incoherent()
144 struct device *dma_dev);
145 void iommu_pages_free_incoherent(void *virt, struct device *dma_dev);
H A Diommu-pages.c146 int iommu_pages_start_incoherent(void *virt, struct device *dma_dev) in iommu_pages_start_incoherent() argument
155 iommu_pages_flush_incoherent(dma_dev, virt, 0, in iommu_pages_start_incoherent()
158 dma = dma_map_single(dma_dev, virt, ioptdesc_mem_size(iopt), in iommu_pages_start_incoherent()
160 if (dma_mapping_error(dma_dev, dma)) in iommu_pages_start_incoherent()
169 dma_unmap_single(dma_dev, dma, ioptdesc_mem_size(iopt), in iommu_pages_start_incoherent()
190 struct device *dma_dev) in iommu_pages_start_incoherent_list() argument
200 folio_address(ioptdesc_folio(cur)), dma_dev); in iommu_pages_start_incoherent_list()
218 struct device *dma_dev) in iommu_pages_stop_incoherent_list() argument
227 dma_unmap_single(dma_dev, virt_to_phys(folio_address(folio)), in iommu_pages_stop_incoherent_list()
241 void iommu_pages_free_incoherent(void *virt, struct device *dma_dev) in iommu_pages_free_incoherent() argument
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/linux/drivers/spi/
H A Dspi-pxa2xx-pci.c84 if (dws->dma_dev != chan->device->dev) in lpss_dma_filter()
91 static void lpss_dma_put_device(void *dma_dev) in lpss_dma_put_device() argument
93 pci_dev_put(dma_dev); in lpss_dma_put_device()
100 struct pci_dev *dma_dev; in lpss_spi_setup() local
152 dma_dev = pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn), 0)); in lpss_spi_setup()
153 ret = devm_add_action_or_reset(&dev->dev, lpss_dma_put_device, dma_dev); in lpss_spi_setup()
158 tx->dma_dev = &dma_dev->dev; in lpss_spi_setup()
163 rx->dma_dev = &dma_dev->dev; in lpss_spi_setup()
196 struct pci_dev *dma_dev; in mrfld_spi_setup() local
228 dma_dev = pci_get_slot(dev->bus, PCI_DEVFN(21, 0)); in mrfld_spi_setup()
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/linux/net/core/
H A Dnetdev_queues.c18 struct device *dma_dev; in netdev_queue_get_dma_dev() local
21 dma_dev = queue_ops->ndo_queue_get_dma_dev(dev, idx); in netdev_queue_get_dma_dev()
23 dma_dev = dev->dev.parent; in netdev_queue_get_dma_dev()
25 return dma_dev && dma_dev->dma_mask ? dma_dev : NULL; in netdev_queue_get_dma_dev()
/linux/drivers/dma/amd/ptdma/
H A Dptdma-dmaengine.c564 struct dma_device *dma_dev = &pt->dma_dev; in pt_dmaengine_register() local
596 dma_dev->dev = pt->dev; in pt_dmaengine_register()
597 dma_dev->src_addr_widths = DMA_SLAVE_BUSWIDTH_64_BYTES; in pt_dmaengine_register()
598 dma_dev->dst_addr_widths = DMA_SLAVE_BUSWIDTH_64_BYTES; in pt_dmaengine_register()
599 dma_dev->directions = DMA_MEM_TO_MEM; in pt_dmaengine_register()
600 dma_dev->residue_granularity = DMA_RESIDUE_GRANULARITY_DESCRIPTOR; in pt_dmaengine_register()
601 dma_cap_set(DMA_MEMCPY, dma_dev->cap_mask); in pt_dmaengine_register()
602 dma_cap_set(DMA_INTERRUPT, dma_dev->cap_mask); in pt_dmaengine_register()
608 dma_cap_set(DMA_PRIVATE, dma_dev->cap_mask); in pt_dmaengine_register()
610 INIT_LIST_HEAD(&dma_dev->channels); in pt_dmaengine_register()
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/linux/drivers/crypto/ccp/
H A Dccp-dmaengine.c668 struct dma_device *dma_dev = &ccp->dma_dev; in ccp_dmaengine_register() local
714 dma_dev->dev = ccp->dev; in ccp_dmaengine_register()
715 dma_dev->src_addr_widths = CCP_DMA_WIDTH(dma_get_mask(ccp->dev)); in ccp_dmaengine_register()
716 dma_dev->dst_addr_widths = CCP_DMA_WIDTH(dma_get_mask(ccp->dev)); in ccp_dmaengine_register()
717 dma_dev->directions = DMA_MEM_TO_MEM; in ccp_dmaengine_register()
718 dma_dev->residue_granularity = DMA_RESIDUE_GRANULARITY_DESCRIPTOR; in ccp_dmaengine_register()
719 dma_cap_set(DMA_MEMCPY, dma_dev->cap_mask); in ccp_dmaengine_register()
720 dma_cap_set(DMA_INTERRUPT, dma_dev->cap_mask); in ccp_dmaengine_register()
729 dma_cap_set(DMA_PRIVATE, dma_dev->cap_mask); in ccp_dmaengine_register()
731 INIT_LIST_HEAD(&dma_dev->channels); in ccp_dmaengine_register()
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/linux/drivers/dma/sf-pdma/
H A Dsf-pdma.c93 dev_err(chan->pdma->dma_dev.dev, in sf_pdma_prep_dma_memcpy()
260 dev_err(chan->pdma->dma_dev.dev, "NULL desc.\n"); in sf_pdma_xfer_desc()
456 INIT_LIST_HEAD(&pdma->dma_dev.channels); in sf_pdma_setup_chans()
487 vchan_init(&chan->vchan, &pdma->dma_dev); in sf_pdma_setup_chans()
542 pdma->dma_dev.dev = &pdev->dev; in sf_pdma_probe()
545 dma_cap_set(DMA_MEMCPY, pdma->dma_dev.cap_mask); in sf_pdma_probe()
546 pdma->dma_dev.copy_align = 2; in sf_pdma_probe()
547 pdma->dma_dev.src_addr_widths = widths; in sf_pdma_probe()
548 pdma->dma_dev.dst_addr_widths = widths; in sf_pdma_probe()
549 pdma->dma_dev.directions = BIT(DMA_MEM_TO_MEM); in sf_pdma_probe()
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/linux/drivers/tty/serial/8250/
H A D8250_mid.c44 struct pci_dev *dma_dev; member
70 mid->dma_dev = pci_get_slot(pdev->bus, in pnw_setup()
77 pci_dev_put(mid->dma_dev); in pnw_exit()
89 chip = pci_get_drvdata(mid->dma_dev); in tng_handle_irq()
125 mid->dma_dev = pci_get_slot(pdev->bus, PCI_DEVFN(5, 0)); in tng_setup()
133 pci_dev_put(mid->dma_dev); in tng_exit()
192 mid->dma_dev = pdev; in dnv_setup()
200 if (!mid->dma_dev) in dnv_exit()
246 if (s->dma_dev != chan->device->dev || s->chan_id != chan->chan_id) in mid8250_dma_filter()
260 if (!mid->dma_dev) in mid8250_dma_setup()
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/linux/include/linux/
H A Dblk-mq-dma.h28 bool blk_rq_dma_map_iter_start(struct request *req, struct device *dma_dev,
30 bool blk_rq_dma_map_iter_next(struct request *req, struct device *dma_dev,
56 static inline bool blk_rq_dma_unmap(struct request *req, struct device *dma_dev, in blk_rq_dma_unmap() argument
69 dma_iova_destroy(dma_dev, state, mapped_len, rq_dma_dir(req), in blk_rq_dma_unmap()
74 return !dma_need_unmap(dma_dev); in blk_rq_dma_unmap()
/linux/drivers/infiniband/hw/ionic/
H A Dionic_queue.c8 int ionic_queue_init(struct ionic_queue *q, struct device *dma_dev, in ionic_queue_init() argument
32 q->ptr = dma_alloc_coherent(dma_dev, q->size, &q->dma, GFP_KERNEL); in ionic_queue_init()
38 dma_free_coherent(dma_dev, q->size, q->ptr, q->dma); in ionic_queue_init()
49 void ionic_queue_destroy(struct ionic_queue *q, struct device *dma_dev) in ionic_queue_destroy() argument
51 dma_free_coherent(dma_dev, q->size, q->ptr, q->dma); in ionic_queue_destroy()
/linux/drivers/net/ethernet/broadcom/
H A Dbgmac.c135 struct device *dma_dev = bgmac->dma_dev; in bgmac_dma_tx_add() local
162 slot->dma_addr = dma_map_single(dma_dev, skb->data, skb_headlen(skb), in bgmac_dma_tx_add()
164 if (unlikely(dma_mapping_error(dma_dev, slot->dma_addr))) in bgmac_dma_tx_add()
180 slot->dma_addr = skb_frag_dma_map(dma_dev, frag, 0, in bgmac_dma_tx_add()
182 if (unlikely(dma_mapping_error(dma_dev, slot->dma_addr))) in bgmac_dma_tx_add()
211 dma_unmap_single(dma_dev, slot->dma_addr, skb_headlen(skb), in bgmac_dma_tx_add()
220 dma_unmap_page(dma_dev, slot->dma_addr, len, DMA_TO_DEVICE); in bgmac_dma_tx_add()
237 struct device *dma_dev = bgmac->dma_dev; in bgmac_dma_tx_free() local
262 dma_unmap_single(dma_dev, slot->dma_addr, len, in bgmac_dma_tx_free()
265 dma_unmap_page(dma_dev, slot->dma_addr, len, in bgmac_dma_tx_free()
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