| /kernel/linux/linux-6.6/drivers/xen/ |
| D | grant-dma-ops.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Xen grant DMA-mapping layer - contains special DMA-mapping routines
4 * for providing grant references as DMA addresses to be used by frontends
11 #include <linux/dma-map-ops.h>
19 #include <xen/xen-ops.h>
33 static inline dma_addr_t grant_to_dma(grant_ref_t grant) in grant_to_dma() argument
35 return XEN_GRANT_DMA_ADDR_OFF | ((dma_addr_t)grant << XEN_PAGE_SHIFT); in grant_to_dma()
38 static inline grant_ref_t dma_to_grant(dma_addr_t dma) in dma_to_grant() argument
40 return (grant_ref_t)((dma & ~XEN_GRANT_DMA_ADDR_OFF) >> XEN_PAGE_SHIFT); in dma_to_grant()
70 * DMA ops for Xen frontends (e.g. virtio).
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| D | Kconfig | 1 # 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$devpath/state ] && echo online > /…
137 tristate "userspace grant access device driver"
145 bool "Add support for dma-buf grant access device driver extension"
150 dma-buf implementation. With this extension grant references to
151 the pages of an imported dma-buf can be exported for other domain
152 use and grant references coming from a foreign domain can be
153 converted into a local dma-buf for local export.
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| D | grant-dma-iommu.c | 1 // SPDX-License-Identifier: GPL-2.0
5 * bindings by Xen grant DMA-mapping layer.
21 return ERR_PTR(-ENODEV); in grant_dma_iommu_probe_device()
30 { .compatible = "xen,grant-dma" },
39 mmu = devm_kzalloc(&pdev->dev, sizeof(*mmu), GFP_KERNEL); in grant_dma_iommu_probe()
41 return -ENOMEM; in grant_dma_iommu_probe()
43 mmu->dev = &pdev->dev; in grant_dma_iommu_probe()
45 ret = iommu_device_register(&mmu->iommu, &grant_dma_iommu_ops, &pdev->dev); in grant_dma_iommu_probe()
59 iommu_device_unregister(&mmu->iommu); in grant_dma_iommu_remove()
66 .name = "grant-dma-iommu",
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| D | Makefile | 1 # SPDX-License-Identifier: GPL-2.0
2 obj-$(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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| D | grant-table.c | 6 * 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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| D | gntdev-common.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
4 * Common functionality of grant device.
6 * Copyright (c) 2006-2007, D G Murray.
30 /* Device for which DMA memory is allocated. */
67 * If dmabuf_vaddr is not NULL then this mapping is backed by DMA
72 /* Flags used to create this DMA buffer: GNTDEV_DMA_FLAG_XXX. */
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| D | gntdev-dmabuf.c | 1 // 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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| /kernel/linux/linux-5.10/include/uapi/xen/ |
| D | gntdev.h | 1 /* 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
63 /* Array of grant references, of size @count. */
68 * Removes the grant references from the mapping table of an instance of
93 * contiguously-allocated range at once, and not any subrange thereof.
125 * cleanup if this side crashes. Required to implement cross-domain robust
165 * Copy between grant references and local buffers.
168 * to/from one grant reference.
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| /kernel/linux/linux-6.6/include/uapi/xen/ |
| D | gntdev.h | 1 /* 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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| /kernel/linux/linux-6.6/Documentation/devicetree/bindings/iommu/ |
| D | xen,grant-dma.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/iommu/xen,grant-dma.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Stefano Stabellini <sstabellini@kernel.org>
13 The Xen IOMMU represents the Xen grant table interface. Grant mappings
16 The binding is required to restrict memory access using Xen grant mappings.
20 const: xen,grant-dma
22 '#iommu-cells':
29 - compatible
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| /kernel/linux/linux-5.10/drivers/xen/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
32 2) control domain: xl mem-max <target-domain> <maxmem>
35 3) control domain: xl mem-set <target-domain> <memory>
51 …SUBSYSTEM=="memory", ACTION=="add", RUN+="/bin/sh -c '[ -f /sys$devpath/state ] && echo online > /…
137 tristate "userspace grant access device driver"
145 bool "Add support for dma-buf grant access device driver extension"
150 dma-buf implementation. With this extension grant references to
151 the pages of an imported dma-buf can be exported for other domain
152 use and grant references coming from a foreign domain can be
153 converted into a local dma-buf for local export.
[all …]
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| D | grant-table.c | 6 * Copyright (c) 2005-2006, Christopher Clark
7 * Copyright (c) 2004-2005, K A Fraser
49 #include <linux/dma-mapping.h>
57 #include <xen/hvc-console.h>
58 #include <xen/swiotlb-xen.h>
63 #include <xen/mem-reservation.h>
69 /* External tools reserve first few grant table entries. */
88 /*This is a structure of function pointers for grant table*/
91 * Version of the grant interface.
95 * Grant refs per grant frame.
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| D | gntdev-dmabuf.c | 1 // 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>
21 #include "gntdev-common.h"
22 #include "gntdev-dmabuf.h"
26 * Note on usage of grant reference 0 as invalid grant reference:
27 * grant reference 0 is valid, but never exposed to a driver,
50 /* Scatter-gather table of the imported buffer. */
52 /* dma-buf attachment of the imported buffer. */
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| D | gntdev-common.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
4 * Common functionality of grant device.
6 * Copyright (c) 2006-2007, D G Murray.
30 /* Device for which DMA memory is allocated. */
67 * If dmabuf_vaddr is not NULL then this mapping is backed by DMA
72 /* Flags used to create this DMA buffer: GNTDEV_DMA_FLAG_XXX. */
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| /kernel/linux/linux-6.6/include/xen/ |
| D | grant_table.h | 6 * 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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| /kernel/linux/linux-5.10/include/xen/ |
| D | grant_table.h | 6 * 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>
89 * End access through the given grant reference, iff the grant entry is no
90 * longer in use. Return 1 if the grant entry was freed, 0 if it is still in
96 * Eventually end access through the given grant reference, and once that
98 * immediately iff the grant entry is not in use, otherwise it will happen
105 * the grant is no longer in use.
114 * End access through the given grant reference, iff the grant entry is
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| /kernel/linux/linux-5.10/arch/powerpc/include/asm/ |
| D | dcr-regs.h | 1 /* 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 */
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| /kernel/linux/linux-6.6/arch/powerpc/include/asm/ |
| D | dcr-regs.h | 1 /* 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 */
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| /kernel/linux/linux-5.10/drivers/parport/ |
| D | parport_gsc.h | 1 /* 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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| D | parport_gsc.c | 1 // 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>
31 #include <asm/dma.h>
37 #include <asm/parisc-device.h>
43 MODULE_DESCRIPTION("HP-PARISC PC-style parallel port driver");
44 MODULE_SUPPORTED_DEVICE("integrated PC-style parallel port");
80 s->u.pc.ctr = 0xc | (dev->irq_func ? 0x10 : 0x0); in parport_gsc_init_state()
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| D | parport_sunbpp.c | 1 // 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(®s->p_csr); in parport_sunbpp_disable_irq()
58 sbus_writel(tmp, ®s->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(®s->p_csr); in parport_sunbpp_enable_irq()
68 sbus_writel(tmp, ®s->p_csr); in parport_sunbpp_enable_irq()
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| /kernel/linux/linux-6.6/arch/mips/pci/ |
| D | pci-ar2315.c | 1 // 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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| /kernel/linux/linux-5.10/arch/mips/pci/ |
| D | pci-ar2315.c | 1 // 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 -
53 #define AR2315_PCIMISC_GIG_MASK 0x0000000C /* bits 31-30 for pci req */
58 #define AR2315_PCIGRANT_EN 0x00000000 /* 6:7=0 early grant en */
59 #define AR2315_PCIGRANT_FRAME 0x00000040 /* 6:7=1 grant waits 4 frame */
60 #define AR2315_PCIGRANT_IDLE 0x00000080 /* 6:7=2 grant waits 4 idle */
61 #define AR2315_PCIGRANT_GAP 0x00000000 /* 6:7=2 grant waits 4 idle */
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| /kernel/linux/linux-6.6/drivers/parport/ |
| D | parport_gsc.h | 1 /* 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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| D | parport_sunbpp.c | 1 // 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(®s->p_csr); in parport_sunbpp_disable_irq()
58 sbus_writel(tmp, ®s->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(®s->p_csr); in parport_sunbpp_enable_irq()
68 sbus_writel(tmp, ®s->p_csr); in parport_sunbpp_enable_irq()
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