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/openbmc/qemu/tests/qemu-iotests/
H A D2324 # Test for auto-read-only
51 if ! test -t 0; then
52 while read cmd; do
57 ) | $QEMU -nographic -monitor stdio -nodefaults "$@"
69 echo "info block -n" | run_qemu "$@" | grep -e "(file" -e "QEMU_PROG"
76 if [ -n "$TEST_IMG_FILE" ]; then
80 chmod a-w $TEST_IMG
87 echo "=== -drive with read-write image: read-only/auto-read-only combinations ==="
90 run_qemu_info_block -drive driver=file,file="$TEST_IMG",if=none,read-only=on,auto-read-only=off
91 run_qemu_info_block -drive driver=file,file="$TEST_IMG",if=none,read-only=on,auto-read-only=on
[all …]
H A D232.out4 === -drive with read-write image: read-only/auto-read-only combinations ===
6 NODE_NAME: TEST_DIR/t.IMGFMT (file, read-only)
7 NODE_NAME: TEST_DIR/t.IMGFMT (file, read-only)
8 NODE_NAME: TEST_DIR/t.IMGFMT (file, read-only)
18 === -drive with read-only image: read-only/auto-read-only combinations ===
20 NODE_NAME: TEST_DIR/t.IMGFMT (file, read-only)
21 NODE_NAME: TEST_DIR/t.IMGFMT (file, read-only)
22 NODE_NAME: TEST_DIR/t.IMGFMT (file, read-only)
24 QEMU_PROG: -drive driver=file,file=TEST_DIR/t.IMGFMT,if=none,read-only=off,auto-read-only=off: Coul…
28 QEMU_PROG: -drive driver=file,file=TEST_DIR/t.IMGFMT,if=none,auto-read-only=off: Could not open 'TE…
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H A D153.out2 == readonly=off,force-share=on should be rejected ==
3 QEMU_PROG: -drive if=none,file=null-co://,readonly=off,force-share=on: force-share=on can only be u…
14 QEMU_PROG: -drive file=TEST_DIR/t.qcow2,if=none,: Failed to get "write" lock
17 == Launching another QEMU, opts: 'read-only=on' ==
18 QEMU_PROG: -drive file=TEST_DIR/t.qcow2,if=none,read-only=on: Failed to get shared "write" lock
21 == Launching another QEMU, opts: 'read-only=on,force-share=on' ==
25 _qemu_io_wrapper -c read 0 512 TEST_DIR/t.qcow2
26 qemu-io: can't open device TEST_DIR/t.qcow2: Failed to get "write" lock
29 _qemu_io_wrapper -r -c read 0 512 TEST_DIR/t.qcow2
30 qemu-io: can't open device TEST_DIR/t.qcow2: Failed to get shared "write" lock
[all …]
H A D2474 # Test for auto-read-only with commit block job
50 echo "=== Try commit to backing file with auto-read-only ==="
60 {"execute":"block-commit",
61 "arguments":{"device":"format-4", "top-node": "format-2", "base-node":"format-0", "job-id":"job0"}}
69 ) | $QEMU -qmp stdio -nographic -nodefaults \
70 -blockdev file,node-name=file-0,filename=$TEST_IMG.0,auto-read-only=on \
71 -blockdev $IMGFMT,node-name=format-0,file=file-0,read-only=on \
72 -blockdev file,node-name=file-1,filename=$TEST_IMG.1,auto-read-only=on \
73 -blockdev $IMGFMT,node-name=format-1,file=file-1,read-only=on,backing=format-0 \
74 -blockdev file,node-name=file-2,filename=$TEST_IMG.2,auto-read-only=on \
[all …]
/openbmc/qemu/include/hw/i2c/
H A Dpmbus_device.h6 * SPDX-License-Identifier: GPL-2.0-or-later
21 PMBUS_PAGE_PLUS_WRITE = 0x05, /* Block Write-only */
22 PMBUS_PAGE_PLUS_READ = 0x06, /* Block Read-only */
26 PMBUS_STORE_DEFAULT_CODE = 0x13, /* Write-only Byte */
27 PMBUS_RESTORE_DEFAULT_CODE = 0x14, /* Write-only Byte */
30 PMBUS_STORE_USER_CODE = 0x17, /* Write-only Byte */
31 PMBUS_RESTORE_USER_CODE = 0x18, /* Write-only Byte */
32 PMBUS_CAPABILITY = 0x19, /* Read-Only byte */
33 PMBUS_QUERY = 0x1A, /* Write-Only */
34 PMBUS_SMBALERT_MASK = 0x1B, /* Block read, Word write */
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/openbmc/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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/openbmc/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
[all …]
H A Dsysfs-driver-ufs3 Contact: linux-scsi@vger.kernel.org
5 This file contains the auto-hibernate idle timer setting of a
6 UFS host controller. A value of '0' means auto-hibernate is not
11 10-bit values with a power-of-ten multiplier which allows a
23 The file is read only.
33 The file is read only.
43 The file is read only.
54 The file is read only.
64 The file is read only.
75 The file is read only.
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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-platform-dfl-port1 What: /sys/bus/platform/devices/dfl-port.0/id
5 Description: Read-only. It returns id of this port. One DFL FPGA device
9 What: /sys/bus/platform/devices/dfl-port.0/afu_id
13 Description: Read-only. User can program different PR bitstreams to FPGA
18 What: /sys/bus/platform/devices/dfl-port.0/power_state
22 Description: Read-only. It reports the APx (AFU Power) state, different APx
24 returns "0" - Normal / "1" - AP1 / "2" - AP2 / "6" - AP6.
26 What: /sys/bus/platform/devices/dfl-port.0/ap1_event
30 Description: Read-write. Read this file for AP1 (AFU Power State 1) event.
34 What: /sys/bus/platform/devices/dfl-port.0/ap2_event
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H A Dsysfs-class-cxl11 Contact: linuxppc-dev@lists.ozlabs.org
12 Description: read only
22 Contact: linuxppc-dev@lists.ozlabs.org
23 Description: read/write
29 Users: https://github.com/ibm-capi/libcxl
33 Contact: linuxppc-dev@lists.ozlabs.org
34 Description: read only
39 Users: https://github.com/ibm-capi/libcxl
43 Contact: linuxppc-dev@lists.ozlabs.org
44 Description: read only
[all …]
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
[all …]
H A Dsysfs-block-zram5 The disksize file is read-write and specifies the disk size
14 The initstate file is read-only and shows the initialization
21 The reset file is write-only and allows resetting the
29 The max_comp_streams file is read-write and specifies the
37 The comp_algorithm file is read-write and lets to show
45 The mem_used_max file is write-only and is used to reset
48 "0". Otherwise, you could see -EINVAL.
55 The mem_limit file is write-only and specifies the maximum
64 The compact file is write-only and trigger compaction for
72 The io_stat file is read-only and accumulates device's I/O
[all …]
/openbmc/u-boot/drivers/virtio/
H A Dvirtio_mmio.h1 /* SPDX-License-Identifier: GPL-2.0+ */
14 /* Magic value ("virt" string) - Read Only */
17 /* Virtio device version - Read Only */
20 /* Virtio device ID - Read Only */
23 /* Virtio vendor ID - Read Only */
28 * (32 bits per set) - Read Only
32 /* Device (host) features set selector - Write Only */
37 * (32 bits per set) - Write Only
41 /* Activated features set selector - Write Only */
44 #ifndef VIRTIO_MMIO_NO_LEGACY /* LEGACY DEVICES ONLY! */
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/openbmc/qemu/include/standard-headers/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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/openbmc/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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/openbmc/openbmc/poky/documentation/dev-manual/
H A Dread-only-rootfs.rst1 .. SPDX-License-Identifier: CC-BY-SA-2.0-UK
3 Creating a Read-Only Root Filesystem
7 root filesystem's write permissions (i.e. you need a read-only root
9 from a read-only storage device. For either case, you can customize your
14 Supporting a read-only root filesystem requires that the system and
23 To create the read-only root filesystem, simply add the
24 "read-only-rootfs" feature to your image, normally in one of two ways.
25 The first way is to add the "read-only-rootfs" image feature in the
28 IMAGE_FEATURES += "read-only-rootfs"
34 EXTRA_IMAGE_FEATURES = "read-only-rootfs"
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/openbmc/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
[all …]
/openbmc/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.
[all …]
/openbmc/linux/include/uapi/drm/
H A Divpu_accel.h1 /* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
3 * Copyright (C) 2020-2023 Intel Corporation
76 * struct drm_ivpu_param - Get/Set VPU parameters
85 * PCI Device ID of the VPU device (read-only)
88 * VPU device revision (read-only)
92 * platform type when executing on a simulator or emulator (read-only)
95 * Current PLL frequency (read-only)
98 * Maximum number of simultaneously existing contexts (read-only)
101 * Lowest VPU virtual address available in the current context (read-only)
104 * Value of current context scheduling priority (read-write).
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/openbmc/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
[all …]
/openbmc/qemu/hw/i2c/
H A Dpmbus_device.c6 * SPDX-License-Identifier: GPL-2.0-or-later
25 /* X = (Y * 10^-R - b) / m */ in pmbus_direct_mode2data()
26 uint32_t x = (value / pow(10, c.R) - c.b) / c.m; in pmbus_direct_mode2data()
32 /* L = D * 2^(-e) */ in pmbus_data2linear_mode()
34 return value << (-exp); in pmbus_data2linear_mode()
43 return value >> (-exp); in pmbus_linear_mode2data()
50 if (pmdev->out_buf_len + len > SMBUS_DATA_MAX_LEN) { in pmbus_send()
56 for (int i = len - 1; i >= 0; i--) { in pmbus_send()
57 pmdev->out_buf[i + pmdev->out_buf_len] = data[len - i - 1]; in pmbus_send()
59 pmdev->out_buf_len += len; in pmbus_send()
[all …]
/openbmc/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)
[all …]
/openbmc/u-boot/drivers/sysreset/
H A Dsysreset_mpc83xx.h1 /* SPDX-License-Identifier: GPL-2.0+ */
17 "Address Only Transfer Type",
62 "TDM-DMAC"
70 "Address-only, Clean Block",
71 "Address-only, lwarx reservation set",
72 "Single-beat or Burst write",
74 "Address-only, Flush Block",
78 "Address-only, sync",
79 "Address-only, tlbsync",
80 "Single-beat or Burst read",
[all …]
/openbmc/qemu/docs/specs/
H A Dacpi_pci_hotplug.rst1 QEMU<->ACPI BIOS PCI hotplug interface
7 ACPI GPE block (IO ports 0xafe0-0xafe3, byte access)
8 ----------------------------------------------------
13 PCI slot injection notification pending (IO port 0xae00-0xae03, 4-byte access)
14 ------------------------------------------------------------------------------
18 Read by ACPI BIOS GPE.1 handler to notify OS of injection
19 events. Read-only.
21 PCI slot removal notification (IO port 0xae04-0xae07, 4-byte access)
22 --------------------------------------------------------------------
26 Read by ACPI BIOS GPE.1 handler to notify OS of removal
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