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/linux/sound/firewire/dice/
H A Ddice-interface.h1 /* SPDX-License-Identifier: GPL-2.0 */
10 * Generally, all registers can be read like memory, i.e., with quadlet read or
11 * block read transactions with at least quadlet-aligned offset and length.
12 * Writes are not allowed except where noted; quadlet-sized registers must be
15 * All values are in big endian. The DICE firmware runs on a little-endian CPU
16 * and just byte-swaps _all_ quadlets on the bus, so values without endianness
17 * (e.g. strings) get scrambled and must be byte-swapped again by the driver.
32 * size values are measured in quadlets. Read-only.
50 * Stores the full 64-bit address (node ID and offset in the node's address
60 * A bitmask with asynchronous events; read-only. When any event(s) happen,
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/linux/Documentation/ABI/testing/
H A Dsysfs-platform-dfl-fme1 What: /sys/bus/platform/devices/dfl-fme.0/ports_num
5 Description: Read-only. One DFL FPGA device may have more than 1
7 number of ports on the FPGA device when read it.
9 What: /sys/bus/platform/devices/dfl-fme.0/bitstream_id
13 Description: Read-only. It returns Bitstream (static FPGA region)
17 What: /sys/bus/platform/devices/dfl-fme.0/bitstream_metadata
21 Description: Read-only. It returns Bitstream (static FPGA region) meta
25 What: /sys/bus/platform/devices/dfl-fme.0/cache_size
29 Description: Read-only. It returns cache size of this FPGA device.
31 What: /sys/bus/platform/devices/dfl-fme.0/fabric_version
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H A Dsysfs-class-watchdog5 It is a read only file. It contains status of the watchdog
13 It is a read only file. It contains options of watchdog device.
19 It is a read only file. It contains firmware version of
26 It is a read only file. It contains identity string of
33 It is a read/write file. While reading, it gives '1'
45 It is a read only file. It gives active/inactive status of
52 It is a read only file. It contains watchdog device's
60 It is a read only file. It contains value of time left for
68 It is a read only file. It is read to know about current
75 It is a read only file. It specifies the time in seconds before
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H A Dsysfs-class-switchtec1 switchtec - Microsemi Switchtec PCI Switch Management Endpoint
3 For details on this subsystem look at Documentation/driver-api/switchtec.rst.
6 Date: 05-Jan-2017
14 What: /sys/class/switchtec/switchtec[0-9]+/component_id
15 Date: 05-Jan-2017
19 (read only)
23 What: /sys/class/switchtec/switchtec[0-9]+/component_revision
24 Date: 05-Jan-2017
27 Description: Component revision stored in the hardware (read only)
31 What: /sys/class/switchtec/switchtec[0-9]+/component_vendor
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H A Dsysfs-bus-event_source-devices-hv_gpci3 Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
4 Description: Read-only. Attribute group to describe the magic bits
6 (See ABI/testing/sysfs-bus-event_source-devices-format).
12 counter_info_version = "config:16-23"
13 length = "config:24-31"
14 partition_id = "config:32-63"
15 request = "config:0-31"
16 sibling_part_id = "config:32-63"
17 hw_chip_id = "config:32-63"
18 offset = "config:32-63"
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H A Dsysfs-driver-intel-m10-bmc-sec-update1 What: /sys/bus/platform/drivers/intel-m10bmc-sec-update/.../security/sr_root_entry_hash
5 Description: Read only. Returns the root entry hash for the static
7 string: "hash not programmed". This file is only
11 What: /sys/bus/platform/drivers/intel-m10bmc-sec-update/.../security/pr_root_entry_hash
15 Description: Read only. Returns the root entry hash for the partial
18 is only visible if the underlying device supports it.
21 What: /sys/bus/platform/drivers/intel-m10bmc-sec-update/.../security/bmc_root_entry_hash
25 Description: Read only. Returns the root entry hash for the BMC image
27 "hash not programmed". This file is only visible if the
31 What: /sys/bus/platform/drivers/intel-m10bmc-sec-update/.../security/sr_canceled_csks
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H A Dsysfs-class-led-flash5 Description: read/write
7 microamperes. The file is created only for the flash LED devices
17 Description: read only
25 Description: read/write
28 of the strobe. The file is created only for the flash LED
35 Description: read only
42 Description: read/write
46 On read 1 means that flash is currently strobing and 0 means
53 Description: read only
55 Flash faults are re-read after strobing the flash. Possible
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/linux/drivers/net/ethernet/zte/dinghai/
H A Ddh_queue.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * ZTE DingHai Ethernet driver - PCI capability definitions
4 * Copyright (c) 2022-2026, ZTE Corporation.
28 __le32 device_feature_select; /* read-write */
29 __le32 device_feature; /* read-only */
30 __le32 guest_feature_select; /* read-write */
31 __le32 guest_feature; /* read-write */
32 __le16 msix_config; /* read-write */
33 __le16 num_queues; /* read-only */
34 __u8 device_status; /* read-write */
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/linux/include/uapi/linux/
H A Dvirtio_mmio.h42 /* Magic value ("virt" string) - Read Only */
45 /* Virtio device version - Read Only */
48 /* Virtio device ID - Read Only */
51 /* Virtio vendor ID - Read Only */
55 * (32 bits per set) - Read Only */
58 /* Device (host) features set selector - Write Only */
62 * (32 bits per set) - Write Only */
65 /* Activated features set selector - Write Only */
69 #ifndef VIRTIO_MMIO_NO_LEGACY /* LEGACY DEVICES ONLY! */
71 /* Guest's memory page size in bytes - Write Only */
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H A Drseq.h1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
10 * Copyright (c) 2015-2018 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
17 RSEQ_CPU_ID_UNINITIALIZED = -1,
18 RSEQ_CPU_ID_REGISTRATION_FAILED = -2,
33 /* User read only feature flags */
54 * contained within a single cache-line. It is usually declared as
55 * link-time constant data.
69 * rseq_slice_ctrl - Time slice extension control structure
75 * space. @granted is set and cleared by the kernel and must only be read
105 * kernel. Read by user-space with single-copy atomicity
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H A Dvirtio_pci.h47 /* A 32-bit r/o bitmask of the features supported by the host */
50 /* A 32-bit r/w bitmask of features activated by the guest */
53 /* A 32-bit r/w PFN for the currently selected queue */
56 /* A 16-bit r/o queue size for the currently selected queue */
59 /* A 16-bit r/w queue selector */
62 /* A 16-bit r/w queue notifier */
65 /* An 8-bit device status register. */
68 /* An 8-bit r/o interrupt status register. Reading the value will return the
70 * a read-and-acknowledge. */
73 /* MSI-X registers: only enabled if MSI-X is enabled. */
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/linux/Documentation/ABI/stable/
H A Dsysfs-driver-mlxreg-io1 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/asic_health
6 0 - health failed, 2 - health OK, 3 - ASIC in booting state.
8 The files are read only.
10 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld1_version
11 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/cpld2_version
18 The files are read only.
20 What: /sys/devices/platform/mlxplat/mlxreg-io/hwmon/hwmon*/fan_dir
25 forward direction - relevant bit is set 0;
26 reversed direction - relevant bit is set 1.
28 The files are read only.
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H A Dsysfs-bus-nvmem6 This read/write attribute allows users to set read-write
7 devices as read-only and back to read-write from userspace.
8 This can be used to unlock and relock write-protection of
11 Read returns '0' or '1' for read-write or read-only modes
15 Note: This file is only present if CONFIG_NVMEM_SYSFS
23 This file allows user to read/write the raw NVMEM contents.
26 Note: This file is only present if CONFIG_NVMEM_SYSFS
46 This read-only attribute allows user to read the NVMEM
49 Note: This file is only present if CONFIG_NVMEM_SYSFS
/linux/Documentation/filesystems/spufs/
H A Dspufs.rst1 .. SPDX-License-Identifier: GPL-2.0
10 spufs - the SPU file system
26 logical SPU. Users can change permissions on those files, but not actu-
43 The files in spufs mostly follow the standard behavior for regular sys-
44 tem calls like read(2) or write(2), but often support only a subset of
49 All files that support the read(2) operation also support readv(2) and
52 only the st_mode, st_nlink, st_uid and st_gid fields of struct stat
55 All files support the chmod(2)/fchmod(2) and chown(2)/fchown(2) opera-
57 possible operations, e.g. read access on the wbox file.
68 read(2), pread(2), write(2), pwrite(2), lseek(2)
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/linux/Documentation/filesystems/
H A Dzonefs.rst1 .. SPDX-License-Identifier: GPL-2.0
4 ZoneFS - Zone filesystem for Zoned block devices
11 as a file. Unlike a regular POSIX-compliant file system with native zoned block
15 of the file (append only writes).
18 than to a full-featured POSIX file system. The goal of zonefs is to simplify
22 example of this approach is the implementation of LSM (log-structured merge)
31 -------------------
38 conventional zones. Any read or write access can be executed, similarly to a
62 by sub-directories. This file structure is built entirely using zone information
63 provided by the device and so does not require any complex on-disk metadata
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/linux/Documentation/admin-guide/
H A Dufs.rst5 mount -t ufs -o ufstype=type_of_ufs device dir
20 default value, supported as read-only
24 supported as read-write
28 supported as read-write
35 supported as read-write
39 supported as read-write
42 used in HP-UX
43 supported as read-only
47 supported as read-only
49 nextstep-cd
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/linux/fs/nls/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
23 default "iso8859-1"
31 cp949, cp950, cp1251, cp1255, euc-jp, euc-kr, gb2312, iso8859-1,
32 iso8859-2, iso8859-3, iso8859-4, iso8859-5, iso8859-6, iso8859-7,
33 iso8859-8, iso8859-9, iso8859-13, iso8859-14, iso8859-15,
34 koi8-r, koi8-ru, koi8-u, sjis, tis-620, macroman, utf8.
35 If you specify a wrong value, it will use the built-in NLS;
36 compatible with iso8859-1.
38 If unsure, specify it as "iso8859-1".
45 in so-called DOS codepages. You need to include the appropriate
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/linux/arch/powerpc/boot/dts/fsl/
H A Dp1022ds.dtsi2 * P1022 DS Device Tree Source stub (no addresses or top-level ranges)
37 #address-cells = <1>;
38 #size-cells = <1>;
39 compatible = "cfi-flash";
41 bank-width = <2>;
42 device-width = <1>;
46 label = "ramdisk-nor";
47 read-only;
52 label = "diagnostic-nor";
53 read-only;
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H A Dp1020rdb.dtsi2 * P1020 RDB Device Tree Source stub (no addresses or top-level ranges)
4 * Copyright 2011-2012 Freescale Semiconductor Inc.
37 #address-cells = <1>;
38 #size-cells = <1>;
39 compatible = "cfi-flash";
41 bank-width = <2>;
42 device-width = <1>;
48 label = "NOR (RO) Vitesse-7385 Firmware";
49 read-only;
56 read-only;
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H A Dp2020rdb.dts1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright 2009-2012 Freescale Semiconductor Inc.
8 /include/ "p2020si-pre.dtsi"
37 #address-cells = <1>;
38 #size-cells = <1>;
39 compatible = "cfi-flash";
41 bank-width = <2>;
42 device-width = <1>;
48 label = "NOR (RO) Vitesse-7385 Firmware";
49 read-only;
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/linux/tools/testing/selftests/rseq/
H A Drseq-abi.h1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
6 * rseq-abi.h
10 * Copyright (c) 2015-2022 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
17 RSEQ_ABI_CPU_ID_UNINITIALIZED = -1,
18 RSEQ_ABI_CPU_ID_REGISTRATION_FAILED = -2,
42 * contained within a single cache-line. It is usually declared as
43 * link-time constant data.
57 * rseq_abi_slice_ctrl - Time slice extension control structure
63 * space. @granted is set and cleared by the kernel and must only be read
79 * contained within a single cache-line.
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/linux/drivers/net/ethernet/ti/
H A Ddavinci_cpdma.h1 /* SPDX-License-Identifier: GPL-2.0 */
102 CPDMA_TX_RLIM, /* read-write */
103 CPDMA_CMD_IDLE, /* write-only */
104 CPDMA_COPY_ERROR_FRAMES, /* read-write */
105 CPDMA_RX_OFF_LEN_UPDATE, /* read-write */
106 CPDMA_RX_OWNERSHIP_FLIP, /* read-write */
107 CPDMA_TX_PRIO_FIXED, /* read-write */
108 CPDMA_STAT_IDLE, /* read-only */
109 CPDMA_STAT_TX_ERR_CHAN, /* read-only */
110 CPDMA_STAT_TX_ERR_CODE, /* read-only */
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/linux/drivers/comedi/drivers/
H A Dplx9080.h1 /* SPDX-License-Identifier: GPL-2.0+ */
26 * struct plx_dma_desc - DMA descriptor format for PLX PCI 9080
32 * Describes the format of a scatter-gather DMA descriptor for the PLX
33 * PCI 9080. All members are raw, little-endian register values that
37 * The DMA descriptors must be aligned on a 16-byte boundary. Bits 3:0
112 /* PCI Read No Write Mode */
114 /* PCI Read with Write Flush Mode */
118 /* PCI Read No Flush Mode */
137 /* Big Endian Byte Lane Mode - use most significant byte lanes */
149 * Note: The Expansion ROM stuff is only relevant to the PC environment.
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/linux/Documentation/sound/cards/
H A Dhdspm.rst2 Software Interface ALSA-DSP MADI Driver
5 (translated from German, so no good English ;-),
7 2004 - winfried ritsch
11 the Controls and startup-options are ALSA-Standard and only the
19 ------------------
21 * number of channels -- depends on transmission mode
24 use for a lower number of channels is only resource allocation,
27 scaled. (Only important for low performance boards).
29 * Single Speed -- 1..64 channels
33 receiver, only 56 are transmitted/received over the MADI, but
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/linux/arch/arm/boot/dts/qcom/
H A Dqcom-ipq4018-ap120c-ac.dtsi1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
3 #include "qcom-ipq4019.dtsi"
4 #include <dt-bindings/gpio/gpio.h>
5 #include <dt-bindings/input/input.h>
8 model = "ALFA Network AP120C-AC";
9 compatible = "alfa-network,ap120c-ac", "qcom,ipq4018";
16 stdout-path = "serial0:115200n8";
20 compatible = "gpio-keys";
22 key-reset {
31 i2c0_pins: i2c0-state {
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