| /linux/drivers/soc/tegra/fuse/ |
| H A D | fuse-tegra20.c | 22 #include <soc/tegra/fuse.h>
24 #include "fuse.h"
30 static u32 tegra20_fuse_read_early(struct tegra_fuse *fuse, unsigned int offset) in tegra20_fuse_read_early() argument
32 return readl_relaxed(fuse->base + FUSE_BEGIN + offset); in tegra20_fuse_read_early()
37 struct tegra_fuse *fuse = args; in apb_dma_complete() local
39 complete(&fuse->apbdma.wait); in apb_dma_complete()
42 static u32 tegra20_fuse_read(struct tegra_fuse *fuse, unsigned int offset) in tegra20_fuse_read() argument
50 err = pm_runtime_resume_and_get(fuse->dev); in tegra20_fuse_read()
54 mutex_lock(&fuse->apbdma.lock); in tegra20_fuse_read()
56 fuse->apbdma.config.src_addr = fuse->phys + FUSE_BEGIN + offset; in tegra20_fuse_read()
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| H A D | fuse.h | 21 u32 (*read)(struct tegra_fuse *fuse, unsigned int offset);
27 void (*init)(struct tegra_fuse *fuse);
29 int (*probe)(struct tegra_fuse *fuse);
52 u32 (*read_early)(struct tegra_fuse *fuse, unsigned int offset);
53 u32 (*read)(struct tegra_fuse *fuse, unsigned int offset);
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| H A D | Makefile | 2 obj-y += fuse-tegra.o
3 obj-y += fuse-tegra30.o
5 obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += fuse-tegra20.o
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| /linux/Documentation/filesystems/fuse/ |
| H A D | fuse-passthrough.rst | 4 FUSE Passthrough
10 FUSE (Filesystem in Userspace) passthrough is a feature designed to improve the
11 performance of FUSE filesystems for I/O operations. Typically, FUSE operations
12 involve communication between the kernel and a userspace FUSE daemon, which can
13 incur overhead. Passthrough allows certain operations on a FUSE file to bypass
17 This is achieved by the FUSE daemon registering a file descriptor (pointing to
18 the backing file on a lower filesystem) with the FUSE kernel module. The kernel
20 When a FUSE file is subsequently opened, the FUSE daemon can, in its response to
31 To use FUSE passthrough:
33 1. The FUSE filesystem must be compiled with ``CONFIG_FUSE_PASSTHROUGH``
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| H A D | fuse-io-uring.rst | 4 FUSE-over-io-uring design documentation
7 This documentation covers basic details how the fuse
9 and works. For generic details about FUSE see fuse.rst.
17 is required to also handle requests through /dev/fuse after io-uring setup
21 Fuse io-uring configuration
24 Fuse kernel requests are queued through the classical /dev/fuse
27 In order to set up fuse-over-io-uring fuse-server (user-space)
28 needs to submit SQEs (opcode = IORING_OP_URING_CMD) to the /dev/fuse
35 Note, every CPU core has its own fuse-io-uring queue.
36 Userspace handles the CQE/fuse-request and submits the result as
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| H A D | fuse.rst | 4 FUSE Overview
37 What is FUSE?
40 FUSE is a userspace filesystem framework. It consists of a kernel
41 module (fuse.ko), a userspace library (libfuse.*) and a mount utility
44 One of the most important features of FUSE is allowing secure,
50 `FUSE homepage: <https://github.com/libfuse/>`_
57 fuse
58 This is the usual way to mount a FUSE filesystem. The first
72 obtained by opening the FUSE device ('/dev/fuse').
84 By default FUSE doesn't check file access permissions, the
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| H A D | index.rst | 4 FUSE (Filesystem in Userspace) Technical Documentation
11 fuse
12 fuse-io
13 fuse-io-uring
14 fuse-passthrough
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| /linux/drivers/pmdomain/qcom/ |
| H A D | cpr.c | 146 /* fuse quot */
150 /* fuse quot_offset */
367 struct fuse_corner *fuse = corner->fuse_corner; in cpr_corner_restore() local
371 ro_sel = fuse->ring_osc_idx; in cpr_corner_restore()
373 gcnt |= fuse->quot - corner->quot_adjust; in cpr_corner_restore()
377 step_quot |= fuse->step_quot & RBCPR_STEP_QUOT_STEPQUOT_MASK; in cpr_corner_restore()
802 struct fuse_corner *fuse = drv->fuse_corners; in cpr_populate_ring_osc_idx() local
803 struct fuse_corner *end = fuse + drv->desc->num_fuse_corners; in cpr_populate_ring_osc_idx()
808 for (; fuse < end; fuse++, fuses++) { in cpr_populate_ring_osc_idx()
812 fuse->ring_osc_idx = data; in cpr_populate_ring_osc_idx()
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| /linux/fs/fuse/ |
| H A D | Kconfig | 3 tristate "FUSE (Filesystem in Userspace) support"
7 With FUSE it is possible to implement a fully functional filesystem
11 from the FUSE homepage:
14 installed if you've installed the "fuse" package itself.
16 See <file:Documentation/filesystems/fuse/fuse.rst> for more information.
20 a filesystem based on FUSE, answer Y or M.
26 This FUSE extension allows character devices to be
58 bool "FUSE passthrough operations support"
63 This allows bypassing FUSE server by mapping specific FUSE operations
69 bool "FUSE communication over io-uring"
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| H A D | Makefile | 3 # Makefile for the FUSE filesystem.
9 obj-$(CONFIG_FUSE_FS) += fuse.o
13 fuse-y := trace.o # put trace.o first so we see ftrace errors sooner
14 fuse-y += dev.o dir.o file.o inode.o control.o xattr.o acl.o readdir.o ioctl.o
15 fuse-y += iomode.o
16 fuse-$(CONFIG_FUSE_DAX) += dax.o
17 fuse-$(CONFIG_FUSE_PASSTHROUGH) += passthrough.o backing.o
18 fuse-$(CONFIG_SYSCTL) += sysctl.o
19 fuse-$(CONFIG_FUSE_IO_URING) += dev_uring.o
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| H A D | fuse_i.h | 2 FUSE: Filesystem in Userspace
13 # define pr_fmt(fmt) "fuse: " fmt
16 #include <linux/fuse.h>
109 /** FUSE inode */
221 /** FUSE inode state bits */
241 /** FUSE specific file data */
243 /** Fuse connection for this file */
311 /** FUSE folio descriptor */
404 * FR_URING: request is handled through fuse-io-uring
480 * Input queue signalling is device-specific. For example, the /dev/fuse file
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| H A D | acl.c | 2 * FUSE: Filesystem in Userspace
84 * FUSE daemons before FUSE_POSIX_ACL was introduced could get and set in fuse_get_inode_acl()
119 * Fuse userspace is responsible for updating access in fuse_set_acl()
142 * Fuse daemons without FUSE_POSIX_ACL never changed the passed in fuse_set_acl()
159 * Fuse daemons without FUSE_POSIX_ACL never cached POSIX ACLs in fuse_set_acl()
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| /linux/Documentation/filesystems/ |
| H A D | virtiofs.rst | 46 ro, rw, context, etc. It also supports FUSE mount options.
58 Since the virtio-fs device uses the FUSE protocol for file system requests, the
59 virtiofs file system for Linux is integrated closely with the FUSE file system
60 client. The guest acts as the FUSE client while the host acts as the FUSE
61 server. The /dev/fuse interface between the kernel and userspace is replaced
64 FUSE requests are placed into a virtqueue and processed by the host. The
68 Mapping /dev/fuse to virtqueues requires solving differences in semantics
69 between /dev/fuse and virtqueues. Each time the /dev/fuse device is read, the
70 FUSE client may choose which request to transfer, making it possible to
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| /linux/drivers/gpu/drm/nouveau/nvkm/subdev/fuse/ |
| H A D | base.c | 27 nvkm_fuse_read(struct nvkm_fuse *fuse, u32 addr) in nvkm_fuse_read() argument
29 return fuse->func->read(fuse, addr); in nvkm_fuse_read()
47 struct nvkm_fuse *fuse; in nvkm_fuse_new_() local
48 if (!(fuse = *pfuse = kzalloc(sizeof(*fuse), GFP_KERNEL))) in nvkm_fuse_new_()
50 nvkm_subdev_ctor(&nvkm_fuse, device, type, inst, &fuse->subdev); in nvkm_fuse_new_()
51 fuse->func = func; in nvkm_fuse_new_()
52 spin_lock_init(&fuse->lock); in nvkm_fuse_new_()
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| H A D | Kbuild | 2 nvkm-y += nvkm/subdev/fuse/base.o
3 nvkm-y += nvkm/subdev/fuse/nv50.o
4 nvkm-y += nvkm/subdev/fuse/gf100.o
5 nvkm-y += nvkm/subdev/fuse/gm107.o
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| H A D | nv50.c | 27 nv50_fuse_read(struct nvkm_fuse *fuse, u32 addr) in nv50_fuse_read() argument
29 struct nvkm_device *device = fuse->subdev.device; in nv50_fuse_read()
34 spin_lock_irqsave(&fuse->lock, flags); in nv50_fuse_read()
38 spin_unlock_irqrestore(&fuse->lock, flags); in nv50_fuse_read()
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| H A D | gf100.c | 27 gf100_fuse_read(struct nvkm_fuse *fuse, u32 addr) in gf100_fuse_read() argument
29 struct nvkm_device *device = fuse->subdev.device; in gf100_fuse_read()
34 spin_lock_irqsave(&fuse->lock, flags); in gf100_fuse_read()
40 spin_unlock_irqrestore(&fuse->lock, flags); in gf100_fuse_read()
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| /linux/Documentation/devicetree/bindings/fuse/ |
| H A D | nvidia,tegra20-fuse.yaml | 4 $id: http://devicetree.org/schemas/fuse/nvidia,tegra20-fuse.yaml#
7 title: NVIDIA Tegra FUSE block
38 - const: fuse
45 - const: fuse
81 fuse@7000f800 {
85 clock-names = "fuse";
87 reset-names = "fuse";
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| /linux/Documentation/devicetree/bindings/opp/ |
| H A D | opp-v2-qcom-level.yaml | 27 qcom,opp-fuse-level:
29 A positive value representing the fuse corner/level associated with
30 this OPP node. Sometimes several corners/levels shares a certain fuse
31 corner/level. A fuse corner/level contains e.g. ref uV, min uV,
39 - qcom,opp-fuse-level
53 qcom,opp-fuse-level = <1>;
57 qcom,opp-fuse-level = <2>;
61 qcom,opp-fuse-level = <3>;
|
| /linux/drivers/media/platform/amphion/ |
| H A D | vpu_imx8q.c | 228 u32 fuse = vpu_imx8q_get_fuse(); in vpu_imx8q_check_codec() local
231 if (fuse & VPU_ENCODER_MASK) in vpu_imx8q_check_codec()
234 fuse >>= VPU_IMX_DECODER_FUSE_OFFSET; in vpu_imx8q_check_codec()
235 fuse &= VPU_DECODER_MASK; in vpu_imx8q_check_codec()
237 if (fuse == VPU_DECODER_MASK) in vpu_imx8q_check_codec()
245 u32 fuse = vpu_imx8q_get_fuse(); in vpu_imx8q_check_fmt() local
248 fuse >>= VPU_IMX_DECODER_FUSE_OFFSET; in vpu_imx8q_check_fmt()
249 fuse &= VPU_DECODER_MASK; in vpu_imx8q_check_fmt()
251 if (fuse == VPU_DECODER_HEVC_MASK && pixelfmt == V4L2_PIX_FMT_HEVC) in vpu_imx8q_check_fmt()
253 if (fuse == VPU_DECODER_H264_MASK && pixelfmt == V4L2_PIX_FMT_H264) in vpu_imx8q_check_fmt()
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| /linux/tools/testing/selftests/filesystems/fuse/ |
| H A D | fusectl_test.c | 22 #define FUSECTL_MOUNTPOINT "/sys/fs/fuse/connections"
24 #define FUSE_DEVICE "/dev/fuse"
65 "Failed to create FUSE mountpoint %s", in FIXTURE_SETUP()
70 "FUSE control filesystem not mounted"); in FIXTURE_SETUP()
75 "Failed to fork FUSE daemon process: %s", in FIXTURE_SETUP()
86 "Failed to start FUSE daemon %s", in FIXTURE_SETUP()
92 "Failed to stat FUSE mountpoint %s", in FIXTURE_SETUP()
109 sprintf(path_buf, "/sys/fs/fuse/connections/%d/abort", self->connection); in TEST_F()
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| H A D | Makefile | 10 VAR_CFLAGS := $(shell pkg-config fuse --cflags 2>/dev/null)
12 VAR_CFLAGS := -D_FILE_OFFSET_BITS=64 -I/usr/include/fuse
15 VAR_LDLIBS := $(shell pkg-config fuse --libs 2>/dev/null)
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| /linux/drivers/gpu/drm/nouveau/nvkm/subdev/volt/ |
| H A D | gf117.c | 26 #include <subdev/fuse.h>
32 struct nvkm_fuse *fuse = device->fuse; in gf117_volt_speedo_read() local
34 if (!fuse) in gf117_volt_speedo_read()
37 return nvkm_fuse_read(fuse, 0x3a8); in gf117_volt_speedo_read()
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| H A D | gf100.c | 26 #include <subdev/fuse.h>
32 struct nvkm_fuse *fuse = device->fuse; in gf100_volt_speedo_read() local
34 if (!fuse) in gf100_volt_speedo_read()
37 return nvkm_fuse_read(fuse, 0x1cc); in gf100_volt_speedo_read()
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| H A D | gk104.c | 30 #include <subdev/fuse.h>
72 struct nvkm_fuse *fuse = device->fuse; in gk104_volt_speedo_read() local
75 if (!fuse) in gk104_volt_speedo_read()
79 ret = nvkm_fuse_read(fuse, 0x3a8); in gk104_volt_speedo_read()
|