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/linux/include/uapi/xen/
H A Dgntdev.h1 /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR MIT) */
41 /* The domain ID of the grant to be mapped. */
43 /* The grant reference of the grant to be mapped. */
48 * Inserts the grant references into the mapping table of an instance
51 * considered opaque to userspace, with one exception: if no grant
69 /* Array of grant references, of size @count. */
74 * Removes the grant references from the mapping table of an instance of
99 * contiguously-allocated range at once, and not any subrange thereof.
131 * cleanup if this side crashes. Required to implement cross-domain robust
171 * Copy between grant references and local buffers.
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/linux/Documentation/devicetree/bindings/iommu/
H A Dxen,grant-dma.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/iommu/xen,grant-dma.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Stefano Stabellini <sstabellini@kernel.org>
13 The Xen IOMMU represents the Xen grant table interface. Grant mappings
16 The binding is required to restrict memory access using Xen grant mappings.
20 const: xen,grant-dma
22 '#iommu-cells':
29 - compatible
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/linux/drivers/xen/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
32 2) control domain: xl mem-max <target-domain> <maxmem>
35 3) control domain: xl mem-set <target-domain> <memory>
51 …SUBSYSTEM=="memory", ACTION=="add", RUN+="/bin/sh -c '[ -f /sys$devpath/state ] && echo online > /…
137 tristate "userspace grant access device driver"
146 bool "Add support for dma-buf grant access device driver extension"
151 dma-buf implementation. With this extension grant references to
152 the pages of an imported dma-buf can be exported for other domain
153 use and grant references coming from a foreign domain can be
154 converted into a local dma-buf for local export.
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H A Dgrant-dma-iommu.c1 // SPDX-License-Identifier: GPL-2.0
5 * bindings by Xen grant DMA-mapping layer.
21 return ERR_PTR(-ENODEV); in grant_dma_iommu_probe_device()
30 { .compatible = "xen,grant-dma" },
39 mmu = devm_kzalloc(&pdev->dev, sizeof(*mmu), GFP_KERNEL); in grant_dma_iommu_probe()
41 return -ENOMEM; in grant_dma_iommu_probe()
43 mmu->dev = &pdev->dev; in grant_dma_iommu_probe()
45 ret = iommu_device_register(&mmu->iommu, &grant_dma_iommu_ops, &pdev->dev); in grant_dma_iommu_probe()
59 iommu_device_unregister(&mmu->iommu); in grant_dma_iommu_remove()
64 .name = "grant-dma-iommu",
H A DMakefile1 # SPDX-License-Identifier: GPL-2.0
2 obj-$(CONFIG_HOTPLUG_CPU) += cpu_hotplug.o
3 obj-y += grant-table.o features.o balloon.o manage.o time.o
4 obj-y += mem-reservation.o
5 obj-y += events/
6 obj-y += xenbus/
8 CFLAGS_features.o := -fno-stack-protector
10 dom0-$(CONFIG_ARM64) += arm-device.o
11 dom0-$(CONFIG_PCI) += pci.o
12 dom0-$(CONFIG_USB_SUPPORT) += dbgp.o
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H A Dgrant-table.c6 * Copyright (c) 2005-2006, Christopher Clark
7 * Copyright (c) 2004-2005, K A Fraser
50 #include <linux/dma-mapping.h>
58 #include <xen/hvc-console.h>
59 #include <xen/swiotlb-xen.h>
64 #include <xen/mem-reservation.h>
79 * linked by grant ref, the last element contains GNTTAB_LIST_END. The number
110 /*This is a structure of function pointers for grant table*/
113 * Version of the grant interface.
117 * Grant refs per grant frame.
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H A Dgntdev-dmabuf.c1 // SPDX-License-Identifier: GPL-2.0
4 * Xen dma-buf functionality for gntdev.
6 * DMA buffer implementation is based on drivers/gpu/drm/drm_prime.c.
13 #include <linux/dma-buf.h>
14 #include <linux/dma-direct.h>
23 #include "gntdev-common.h"
24 #include "gntdev-dmabuf.h"
45 /* Scatter-gather table of the imported buffer. */
47 /* dma-buf attachment of the imported buffer. */
54 /* Pages of this buffer (only for dma-buf export). */
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H A Dgntdev-common.h1 /* SPDX-License-Identifier: GPL-2.0 */
4 * Common functionality of grant device.
6 * Copyright (c) 2006-2007, D G Murray.
34 /* Device for which DMA memory is allocated. */
71 * If dmabuf_vaddr is not NULL then this mapping is backed by DMA
76 /* Flags used to create this DMA buffer: GNTDEV_DMA_FLAG_XXX. */
/linux/include/xen/
H A Dgrant_table.h6 * 2. Accessing others' memory reservations via grant references.
7 * (i.e., mechanisms for both sender and recipient of grant references)
9 * Copyright (c) 2004-2005, K A Fraser
50 #include <linux/page-flags.h>
54 * Technically there's no reliably invalid grant reference or grant handle,
57 #define INVALID_GRANT_REF ((grant_ref_t)-1)
58 #define INVALID_GRANT_HANDLE ((grant_handle_t)-1)
94 * End access through the given grant reference, iff the grant entry is no
95 * longer in use. Return 1 if the grant entry was freed, 0 if it is still in
101 * Eventually end access through the given grant reference, and once that
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/linux/arch/powerpc/include/asm/
H A Ddcr-regs.h1 /* SPDX-License-Identifier: GPL-2.0 */
9 * Mostly lifted from asm-ppc/ibm4xx.h by
11 * Copyright (c) 1999 Grant Erickson <grant@lcse.umn.edu>
19 * Most DCRs used for controlling devices such as the MAL, DMA engine,
162 * DCR register offsets for 440SP/440SPe I2O/DMA controller.
167 #define I2O_REG_ENABLE 0x00000001 /* Enable I2O/DMA access */
171 #define DCRN_SDR0_SRST_I2ODMA (0x80000000 >> 15) /* Reset I2O/DMA */
/linux/arch/mips/pci/
H A Dpci-ar2315.c1 // SPDX-License-Identifier: GPL-2.0-or-later
6 * Both AR2315 and AR2316 chips have PCI interface unit, which supports DMA
10 * Read/write operation in the region 0x80000000-0xBFFFFFFF causes
18 * Devices on the bus can perform DMA requests via chip BAR1. PCI host
23 * We know (and support) only one board that uses the PCI interface -
34 #include <linux/dma-direct.h>
54 #define AR2315_PCIMISC_GIG_MASK 0x0000000C /* bits 31-30 for pci req */
59 #define AR2315_PCIGRANT_EN 0x00000000 /* 6:7=0 early grant en */
60 #define AR2315_PCIGRANT_FRAME 0x00000040 /* 6:7=1 grant waits 4 frame */
61 #define AR2315_PCIGRANT_IDLE 0x00000080 /* 6:7=2 grant waits 4 idle */
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/linux/drivers/parport/
H A Dparport_gsc.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Low-level parallel-support for PC-style hardware integrated in the
4 * LASI-Controller (on GSC-Bus) for HP-PARISC Workstations
6 * (C) 1999-2001 by Helge Deller <deller@gmx.de>
9 * Grant Guenther <grant@torque.net>
43 /* --- register definitions ------------------------------- */
45 #define EPPDATA(p) ((p)->base + 0x4)
46 #define EPPADDR(p) ((p)->base + 0x3)
47 #define CONTROL(p) ((p)->base + 0x2)
48 #define STATUS(p) ((p)->base + 0x1)
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H A Dparport_sunbpp.c1 // SPDX-License-Identifier: GPL-2.0-only
2 /* parport_sunbpp.c: Parallel-port routines for SBUS
11 * Grant Guenther <grant@torque.net>
40 #include <asm/dma.h> /* BPP uses LSI 64854 for DMA */
53 struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base; in parport_sunbpp_disable_irq()
56 tmp = sbus_readl(&regs->p_csr); in parport_sunbpp_disable_irq()
58 sbus_writel(tmp, &regs->p_csr); in parport_sunbpp_disable_irq()
63 struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base; in parport_sunbpp_enable_irq()
66 tmp = sbus_readl(&regs->p_csr); in parport_sunbpp_enable_irq()
68 sbus_writel(tmp, &regs->p_csr); in parport_sunbpp_enable_irq()
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H A Dshare.c2 * Parallel-port resource manager code.
10 * based on work by Grant Guenther <grant@torque.net>
48 /* list of all allocated ports, sorted by ->number */
108 return dev->type == &parport_device_type; in is_parport()
116 return -ENODEV; in parport_probe()
118 drv = to_parport_driver(dev->driver); in parport_probe()
119 if (!drv->probe) { in parport_probe()
123 if (strcmp(par_dev->name, drv->name)) in parport_probe()
124 return -ENODEV; in parport_probe()
128 return drv->probe(to_pardevice(dev)); in parport_probe()
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H A Dprocfs.c1 // SPDX-License-Identifier: GPL-2.0
10 * based on work by Grant Guenther <grant@torque.net>
13 * Cleaned up include files - Russell King <linux@arm.uk.linux.org>
39 struct parport *port = (struct parport *)table->extra1; in do_active_device()
45 return -EACCES; in do_active_device()
52 for (dev = port->devices; dev ; dev = dev->next) { in do_active_device()
53 if(dev == port->cad) { in do_active_device()
54 len += scnprintf(buffer, sizeof(buffer), "%s\n", dev->name); in do_active_device()
76 struct parport_device_info *info = table->extra2; in do_autoprobe()
82 return -EACCES; in do_autoprobe()
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/linux/arch/parisc/include/asm/
H A Ddma.h1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* asm/dma.h: Defines for using and allocating dma channels.
4 * High DMA channel support & info by Hannu Savolainen
6 * (c) Copyright 2000, Grant Grundler
20 ** DMA_CHUNK_SIZE is used by the SCSI mid-layer to break up
28 /* The maximum address that we can perform a DMA transfer to on this platform
29 ** New dynamic DMA interfaces should obsolete this....
34 ** We don't have DMA channels... well V-class does but the
35 ** Dynamic DMA Mapping interface will support them... right? :^)
36 ** Note: this is not relevant right now for PA-RISC, but we cannot
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/linux/sound/soc/fsl/
H A Dmpc5200_dma.c1 // SPDX-License-Identifier: GPL-2.0-only
3 // Freescale MPC5200 PSC DMA
10 #include <linux/dma-mapping.h>
33 struct mpc52xx_psc __iomem *regs = psc_dma->psc_regs; in psc_dma_status_irq()
36 isr = in_be16(&regs->mpc52xx_psc_isr); in psc_dma_status_irq()
39 if (psc_dma->playback.active && (isr & MPC52xx_PSC_IMR_TXEMP)) in psc_dma_status_irq()
40 psc_dma->stats.underrun_count++; in psc_dma_status_irq()
43 if (psc_dma->capture.active && (isr & MPC52xx_PSC_IMR_ORERR)) in psc_dma_status_irq()
44 psc_dma->stats.overrun_count++; in psc_dma_status_irq()
46 out_8(&regs->command, MPC52xx_PSC_RST_ERR_STAT); in psc_dma_status_irq()
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H A Dmpc5200_psc_i2s.c1 // SPDX-License-Identifier: GPL-2.0-only
44 dev_dbg(psc_dma->dev, "%s(substream=%p) p_size=%i p_bytes=%i" in psc_i2s_hw_params()
64 dev_dbg(psc_dma->dev, "invalid format\n"); in psc_i2s_hw_params()
65 return -EINVAL; in psc_i2s_hw_params()
67 out_be32(&psc_dma->psc_regs->sicr, psc_dma->sicr | mode); in psc_i2s_hw_params()
90 dev_dbg(psc_dma->dev, "psc_i2s_set_sysclk(cpu_dai=%p, dir=%i)\n", in psc_i2s_set_sysclk()
92 return (dir == SND_SOC_CLOCK_IN) ? 0 : -EINVAL; in psc_i2s_set_sysclk()
109 dev_dbg(psc_dma->dev, "psc_i2s_set_fmt(cpu_dai=%p, format=%i)\n", in psc_i2s_set_fmt()
111 return (format == SND_SOC_DAIFMT_I2S) ? 0 : -EINVAL; in psc_i2s_set_fmt()
114 /* ---------------------------------------------------------------------
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/linux/Documentation/devicetree/bindings/
H A DABI.rst1 .. SPDX-License-Identifier: GPL-2.0
7 I. Regarding stable bindings/ABI, we quote from the 2013 ARM mini-summit
13 frozen for all time. Grant said there are ways to change bindings that
26 2) Use specific compatible strings so that if we need to add a feature (DMA)
/linux/arch/arm/mach-sa1100/
H A Dgeneric.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * linux/arch/arm/mach-sa1100/generic.c
15 #include <linux/dma-mapping.h>
23 #include <linux/irqchip/irq-sa11x0.h>
75 * Default power-off for SA1100
83 /* enable wake-up on GPIO0 (Assabet...) */ in sa1100_power_off()
102 /* Use on-chip reset capability */ in sa11x0_restart()
110 dev->dev.platform_data = data; in sa11x0_register_device()
114 dev->name, err); in sa11x0_register_device()
126 .name = "sa11x0-udc",
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/linux/Documentation/devicetree/bindings/powerpc/fsl/
H A Dmpc5200.txt2 ----------------------------
4 (c) 2006-2009 Secret Lab Technologies Ltd
5 Grant Likely <grant.likely@secretlab.ca>
8 ------------------
9 For mpc5200 on-chip devices, the format for each compatible value is
10 <chip>-<device>[-<mode>]. The OS should be able to match a device driver
21 "fsl,mpc5200-<device>".
29 compatible = "fsl,mpc5200b-<device>","fsl,mpc5200-<device>";
34 ie. ethernet on mpc5200: compatible = "fsl,mpc5200-fec";
35 ethernet on mpc5200b: compatible = "fsl,mpc5200b-fec", "fsl,mpc5200-fec";
[all …]
/linux/net/sunrpc/xprtrdma/
H A Drpc_rdma.c1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
3 * Copyright (c) 2014-2020, Oracle and/or its affiliates.
4 * Copyright (c) 2003-2007 Network Appliance, Inc. All rights reserved.
9 * COPYING in the main directory of this source tree, or the BSD-type
57 /* Returns size of largest RPC-over-RDMA header in a Call message
59 * The largest Call header contains a full-size Read list and a
80 /* Returns size of largest RPC-over-RDMA header in a Reply message
101 * rpcrdma_set_max_header_sizes - Initialize inline payload sizes
110 unsigned int maxsegs = ep->re_max_rdma_segs; in rpcrdma_set_max_header_sizes()
112 ep->re_max_inline_send = in rpcrdma_set_max_header_sizes()
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/linux/arch/powerpc/boot/dts/
H A Dlite5200.dts1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright 2006-2007 Secret Lab Technologies Ltd.
6 * Grant Likely <grant.likely@secretlab.ca>
9 /dts-v1/;
14 #address-cells = <1>;
15 #size-cells = <1>;
16 interrupt-parent = <&mpc5200_pic>;
19 #address-cells = <1>;
20 #size-cells = <0>;
25 d-cache-line-size = <32>;
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H A Dmpc5200b.dtsi1 // SPDX-License-Identifier: GPL-2.0-or-later
6 * Grant Likely <grant@secretlab.ca>
10 /dts-v1/;
15 #address-cells = <1>;
16 #size-cells = <1>;
17 interrupt-parent = <&mpc5200_pic>;
20 #address-cells = <1>;
21 #size-cells = <0>;
26 d-cache-line-size = <32>;
27 i-cache-line-size = <32>;
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H A Damigaone.dts1 // SPDX-License-Identifier: GPL-2.0-or-later
8 /dts-v1/;
13 coherency-off;
14 #address-cells = <1>;
15 #size-cells = <1>;
19 #address-cells = <1>;
20 #size-cells = <0>;
25 d-cache-line-size = <32>; // 32 bytes
26 i-cache-line-size = <32>; // 32 bytes
27 d-cache-size = <32768>; // L1, 32K
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