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/linux/drivers/gpu/drm/nouveau/nvkm/engine/dma/
H A DKbuild1 # SPDX-License-Identifier: MIT
2 nvkm-y += nvkm/engine/dma/base.o
3 nvkm-y += nvkm/engine/dma/nv04.o
4 nvkm-y += nvkm/engine/dma/nv50.o
5 nvkm-y += nvkm/engine/dma/gf100.o
6 nvkm-y += nvkm/engine/dma/gf119.o
7 nvkm-y += nvkm/engine/dma/gv100.o
9 nvkm-y += nvkm/engine/dma/user.o
10 nvkm-y += nvkm/engine/dma/usernv04.o
11 nvkm-y += nvkm/engine/dma/usernv50.o
[all …]
H A Dbase.c27 #include <engine/fifo.h>
36 struct nvkm_dma *dma = nvkm_dma(oclass->engine); in nvkm_dma_oclass_new() local
40 ret = dma->func->class_new(dma, oclass, data, size, &dmaobj); in nvkm_dma_oclass_new()
42 *pobject = &dmaobj->object; in nvkm_dma_oclass_new()
55 return nvkm_dma_oclass_new(oclass->engine->subdev.device, in nvkm_dma_oclass_fifo_new()
73 sclass->base = oclass[0]; in nvkm_dma_oclass_base_get()
74 sclass->engn = oclass; in nvkm_dma_oclass_base_get()
86 oclass->base = nvkm_dma_sclass[index]; in nvkm_dma_oclass_fifo_get()
93 nvkm_dma_dtor(struct nvkm_engine *engine) in nvkm_dma_dtor() argument
95 return nvkm_dma(engine); in nvkm_dma_dtor()
[all …]
/linux/Documentation/driver-api/dmaengine/
H A Dclient.rst2 DMA Engine API Guide
7 .. note:: For DMA Engine usage in async_tx please see:
8 ``Documentation/crypto/async-tx-api.rst``
11 Below is a guide to device driver writers on how to use the Slave-DMA API of the
12 DMA Engine. This is applicable only for slave DMA usage only.
14 DMA usage
17 The slave DMA usage consists of following steps:
19 - Allocate a DMA slave channel
21 - Set slave and controller specific parameters
23 - Get a descriptor for transaction
[all …]
/linux/drivers/gpu/drm/radeon/
H A Dr600_dma.c31 * DMA
33 * DMA engine. The programming model is very similar
34 * to the 3D engine (ring buffer, IBs, etc.), but the
35 * DMA controller has it's own packet format that is
36 * different form the PM4 format used by the 3D engine.
43 * r600_dma_get_rptr - get the current read pointer
55 if (rdev->wb.enabled) in r600_dma_get_rptr()
56 rptr = rdev->wb.wb[ring->rptr_offs/4]; in r600_dma_get_rptr()
64 * r600_dma_get_wptr - get the current write pointer
78 * r600_dma_set_wptr - commit the write pointer
[all …]
H A Devergreen_dma.c31 * evergreen_dma_fence_ring_emit - emit a fence on the DMA ring
36 * Add a DMA fence packet to the ring to write
37 * the fence seq number and DMA trap packet to generate
38 * an interrupt if needed (evergreen-SI).
43 struct radeon_ring *ring = &rdev->ring[fence->ring]; in evergreen_dma_fence_ring_emit()
44 u64 addr = rdev->fence_drv[fence->ring].gpu_addr; in evergreen_dma_fence_ring_emit()
49 radeon_ring_write(ring, fence->seq); in evergreen_dma_fence_ring_emit()
59 * evergreen_dma_ring_ib_execute - schedule an IB on the DMA engine
64 * Schedule an IB in the DMA ring (evergreen).
69 struct radeon_ring *ring = &rdev->ring[ib->ring]; in evergreen_dma_ring_ib_execute()
[all …]
H A Dni_dma.c32 * DMA
34 * DMA engine. The programming model is very similar
35 * to the 3D engine (ring buffer, IBs, etc.), but the
36 * DMA controller has it's own packet format that is
37 * different form the PM4 format used by the 3D engine.
41 * Cayman and newer support two asynchronous DMA engines.
45 * cayman_dma_get_rptr - get the current read pointer
57 if (rdev->wb.enabled) { in cayman_dma_get_rptr()
58 rptr = rdev->wb.wb[ring->rptr_offs/4]; in cayman_dma_get_rptr()
60 if (ring->idx == R600_RING_TYPE_DMA_INDEX) in cayman_dma_get_rptr()
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/linux/Documentation/devicetree/bindings/mips/cavium/
H A Ddma-engine.txt1 * DMA Engine.
3 The Octeon DMA Engine transfers between the Boot Bus and main memory.
4 The DMA Engine will be referred to by phandle by any device that is
8 - compatible: "cavium,octeon-5750-bootbus-dma"
12 - reg: The base address of the DMA Engine's register bank.
14 - interrupts: A single interrupt specifier.
17 dma0: dma-engine@1180000000100 {
18 compatible = "cavium,octeon-5750-bootbus-dma";
/linux/drivers/soc/sunxi/
H A Dsunxi_mbus.c1 // SPDX-License-Identifier: GPL-2.0
5 #include <linux/dma-map-ops.h>
13 * The display engine virtual devices are not strictly speaking
15 * memory allocations and DMA operations through that device, we
18 "allwinner,sun4i-a10-display-engine",
19 "allwinner,sun5i-a10s-display-engine",
20 "allwinner,sun5i-a13-display-engine",
21 "allwinner,sun6i-a31-display-engine",
22 "allwinner,sun6i-a31s-display-engine",
23 "allwinner,sun7i-a20-display-engine",
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/linux/drivers/crypto/marvell/cesa/
H A Dcesa.h1 /* SPDX-License-Identifier: GPL-2.0 */
8 #include <linux/dma-direction.h>
70 * in Errata 4.12. It looks like that it was part of an IRQ-controller in FPGA
124 * /-----------\ 0
126 * |-----------| 0x20
128 * |-----------| 0x40
130 * |-----------| 0x40 (inplace)
132 * |-----------| 0x80
133 * | DATA IN | 16 * x (max ->max_req_size)
134 * |-----------| 0x80 (inplace operation)
[all …]
H A Dtdma.c1 // SPDX-License-Identifier: GPL-2.0-only
6 * Author: Boris Brezillon <boris.brezillon@free-electrons.com>
19 if (!sgiter->sg) in mv_cesa_req_dma_iter_next_transfer()
22 sgiter->op_offset += len; in mv_cesa_req_dma_iter_next_transfer()
23 sgiter->offset += len; in mv_cesa_req_dma_iter_next_transfer()
24 if (sgiter->offset == sg_dma_len(sgiter->sg)) { in mv_cesa_req_dma_iter_next_transfer()
25 if (sg_is_last(sgiter->sg)) in mv_cesa_req_dma_iter_next_transfer()
27 sgiter->offset = 0; in mv_cesa_req_dma_iter_next_transfer()
28 sgiter->sg = sg_next(sgiter->sg); in mv_cesa_req_dma_iter_next_transfer()
31 if (sgiter->op_offset == iter->op_len) in mv_cesa_req_dma_iter_next_transfer()
[all …]
/linux/drivers/dma/ti/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
3 # Texas Instruments DMA drivers
7 tristate "Texas Instruments CPPI 4.1 DMA support"
11 The Communications Port Programming Interface (CPPI) 4.1 DMA engine
22 Enable support for the TI EDMA (Enhanced DMA) controller. This DMA
23 engine is found on TI DaVinci, AM33xx, AM43xx, DRA7xx and Keystone 2
27 tristate "Texas Instruments sDMA (omap-dma) support"
34 Enable support for the TI sDMA (System DMA or DMA4) controller. This
35 DMA engine is found on OMAP and DRA7xx parts.
47 Enable support for the TI UDMA (Unified DMA) controller. This
[all …]
/linux/arch/powerpc/platforms/powernv/
H A Dopal-hmi.c1 // SPDX-License-Identifier: GPL-2.0-or-later
62 "Hypervisor Resource error - core check stop" }, in print_core_checkstop_reason()
74 if (!hmi_evt->u.xstop_error.xstop_reason) { in print_core_checkstop_reason()
80 be32_to_cpu(hmi_evt->u.xstop_error.u.pir)); in print_core_checkstop_reason()
82 if (be32_to_cpu(hmi_evt->u.xstop_error.xstop_reason) & in print_core_checkstop_reason()
84 printk("%s [Unit: %-3s] %s\n", level, in print_core_checkstop_reason()
94 { NX_CHECKSTOP_SHM_INVAL_STATE_ERR, "DMA & Engine", in print_nx_checkstop_reason()
96 { NX_CHECKSTOP_DMA_INVAL_STATE_ERR_1, "DMA & Engine", in print_nx_checkstop_reason()
97 "DMA invalid state error bit 15" }, in print_nx_checkstop_reason()
98 { NX_CHECKSTOP_DMA_INVAL_STATE_ERR_2, "DMA & Engine", in print_nx_checkstop_reason()
[all …]
/linux/drivers/gpu/drm/xe/
H A Dxe_vm_doc.h1 /* SPDX-License-Identifier: MIT */
16 * bind engine, and return a handle to the user.
19 * ------------
33 * ----------
35 * DRM_XE_VM_BIND_OP_MAP - Create mapping for a BO
36 * DRM_XE_VM_BIND_OP_UNMAP - Destroy mapping for a BO / userptr
37 * DRM_XE_VM_BIND_OP_MAP_USERPTR - Create mapping for userptr
54 * .. code-block::
56 * bind BO0 0x0-0x1000
62 * bind BO1 0x201000-0x202000
[all …]
/linux/Documentation/devicetree/bindings/dma/xilinx/
H A Dxilinx_dma.txt1 Xilinx AXI VDMA engine, it does transfers between memory and video devices.
6 Xilinx AXI DMA engine, it does transfers between memory and AXI4 stream
11 Xilinx AXI CDMA engine, it does transfers between memory-mapped source
12 address and a memory-mapped destination address.
14 Xilinx AXI MCDMA engine, it does transfer between memory and AXI4 stream
19 - compatible: Should be one of-
20 "xlnx,axi-vdma-1.00.a"
21 "xlnx,axi-dma-1.00.a"
22 "xlnx,axi-cdma-1.00.a"
23 "xlnx,axi-mcdma-1.00.a"
[all …]
/linux/drivers/ata/
H A Dpata_sl82c105.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * pata_sl82c105.c - SL82C105 PATA for new ATA layer
14 * PIO and DMA. We thus flip to the DMA timings in dma_start and flip back
45 * sl82c105_pre_reset - probe begin
58 struct ata_port *ap = link->ap; in sl82c105_pre_reset()
59 struct pci_dev *pdev = to_pci_dev(ap->host->dev); in sl82c105_pre_reset()
61 if (ap->port_no && !pci_test_config_bits(pdev, &sl82c105_enable_bits[ap->port_no])) in sl82c105_pre_reset()
62 return -ENOENT; in sl82c105_pre_reset()
68 * sl82c105_configure_piomode - set chip PIO timing
80 struct pci_dev *pdev = to_pci_dev(ap->host->dev); in sl82c105_configure_piomode()
[all …]
/linux/Documentation/devicetree/bindings/gpu/host1x/
H A Dnvidia,tegra210-nvenc.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/gpu/host1x/nvidia,tegra210-nvenc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
15 - Thierry Reding <treding@gmail.com>
16 - Mikko Perttunen <mperttunen@nvidia.com>
20 pattern: "^nvenc@[0-9a-f]*$"
24 - nvidia,tegra210-nvenc
25 - nvidia,tegra186-nvenc
26 - nvidia,tegra194-nvenc
[all …]
H A Dnvidia,tegra210-nvdec.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/gpu/host1x/nvidia,tegra210-nvdec.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
15 - Thierry Reding <treding@gmail.com>
16 - Mikko Perttunen <mperttunen@nvidia.com>
20 pattern: "^nvdec@[0-9a-f]*$"
24 - nvidia,tegra210-nvdec
25 - nvidia,tegra186-nvdec
26 - nvidia,tegra194-nvdec
[all …]
/linux/Documentation/misc-devices/
H A Dmrvl_cn10k_dpi.rst1 .. SPDX-License-Identifier: GPL-2.0
4 Marvell CN10K DMA packet interface (DPI) driver
10 DPI is a DMA packet interface hardware block in Marvell's CN10K silicon.
12 mailbox logic, and a set of DMA engines & DMA command queues.
15 requests from its VF functions and provisions DMA engine resources to
20 the DMA engines and VF device's DMA command queues. Also, driver creates
21 /dev/mrvl-cn10k-dpi node to set DMA engine and PEM (PCIe interface) port
26 DMA operations. Only VF devices are provisioned with DMA capabilities.
38 a pem port to which DMA engines are wired.
42 ioctl that sets DMA engine's fifo sizes & max outstanding load request
[all …]
/linux/Documentation/devicetree/bindings/soc/intel/
H A Dintel,hps-copy-engine.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/soc/intel/intel,hps-copy-engine.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: Intel HPS Copy Engine
11 - Matthew Gerlach <matthew.gerlach@linux.intel.com>
14 The Intel Hard Processor System (HPS) Copy Engine is an IP block used to copy
17 well as a keep-a-live indication to the host.
21 const: intel,hps-copy-engine
23 '#dma-cells':
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/linux/sound/pci/
H A Dcs4281.c1 // SPDX-License-Identifier: GPL-2.0-or-later
29 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
57 #define BA0_HISR_DMAI (1<<18) /* DMA interrupt (half or end) */
59 #define BA0_HISR_DMA(c) (1<<(8+(c))) /* DMA channel interrupt */
77 #define BA0_HDSR0 0x00f0 /* Host DMA Engine 0 Status Register */
78 #define BA0_HDSR1 0x00f4 /* Host DMA Engine 1 Status Register */
79 #define BA0_HDSR2 0x00f8 /* Host DMA Engine 2 Status Register */
80 #define BA0_HDSR3 0x00fc /* Host DMA Engine 3 Status Register */
84 #define BA0_HDSR_DHTC (1<<17) /* DMA Half Terminal Count */
85 #define BA0_HDSR_DTC (1<<16) /* DMA Terminal Count */
[all …]
/linux/drivers/gpu/drm/i915/gt/
H A Dintel_migrate.c1 // SPDX-License-Identifier: MIT
23 static bool engine_supports_migration(struct intel_engine_cs *engine) in engine_supports_migration() argument
25 if (!engine) in engine_supports_migration()
33 GEM_BUG_ON(engine->class != COPY_ENGINE_CLASS); in engine_supports_migration()
48 vm->insert_page(vm, 0, d->offset, in xehp_toggle_pdes()
49 i915_gem_get_pat_index(vm->i915, I915_CACHE_NONE), in xehp_toggle_pdes()
51 GEM_BUG_ON(!pt->is_compact); in xehp_toggle_pdes()
52 d->offset += SZ_2M; in xehp_toggle_pdes()
68 vm->insert_page(vm, px_dma(pt), d->offset, in xehp_insert_pte()
69 i915_gem_get_pat_index(vm->i915, I915_CACHE_NONE), in xehp_insert_pte()
[all …]
H A Dselftest_reset.c1 // SPDX-License-Identifier: MIT
22 struct i915_ggtt *ggtt = gt->ggtt; in __igt_reset_stolen()
23 const struct resource *dsm = &gt->i915->dsm.stolen; in __igt_reset_stolen()
25 struct intel_engine_cs *engine; in __igt_reset_stolen() local
34 if (!drm_mm_node_allocated(&ggtt->error_capture)) in __igt_reset_stolen()
43 return -ENOMEM; in __igt_reset_stolen()
47 err = -ENOMEM; in __igt_reset_stolen()
52 wakeref = intel_runtime_pm_get(gt->uncore->rpm); in __igt_reset_stolen()
58 for_each_engine(engine, gt, id) { in __igt_reset_stolen()
62 if (!(mask & engine->mask)) in __igt_reset_stolen()
[all …]
/linux/drivers/dma/ptdma/
H A Dptdma.h
/linux/drivers/crypto/intel/keembay/
H A Docs-aes.h1 /* SPDX-License-Identifier: GPL-2.0-only */
5 * Copyright (C) 2018-2020 Intel Corporation
11 #include <linux/dma-mapping.h>
35 * struct ocs_aes_dev - AES device context.
42 * @dma_err_mask: Error reported by OCS DMA interrupts.
43 * @engine: Crypto engine for the device.
52 struct crypto_engine *engine; member
56 * struct ocs_dll_desc - Descriptor of an OCS DMA Linked List.
58 * @dma_addr: DMA address of the linked list head.
81 * ocs_aes_bypass_op() - Use OCS DMA to copy data.
[all …]
H A Docs-aes.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 2018-2020 Intel Corporation
8 #include <linux/dma-mapping.h>
20 #include "ocs-aes.h"
76 * This bit activates the DMA. When the DMA finishes, it resets
81 * this bit is reset by the DMA.
84 * terminated this bit is reset by the DMA.
131 * 11-bit value, but it is actually 10-bits.
137 * before the tag is written. For 128-bit mode this required delay is 28 OCS
138 * clock cycles. For 256-bit mode it is 36 OCS clock cycles.
[all …]

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