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/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
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)
81 The first SPU to CPU communication mailbox. This file is read-only and
[all …]
/linux/arch/arm/mach-sa1100/include/mach/
H A DSA-1100.h1 /* SPDX-License-Identifier: GPL-2.0 */
3 * FILE SA-1100.h
9 * System StrongARM SA-1100
12 * SA-1100 microprocessor (Advanced RISC Machine (ARM)
14 * StrongARM SA-1100 data sheet version 2.2.
21 #error You must include hardware.h not SA-1100.h
52 #define PCMCIA1Sp PCMCIASp /* PCMCIA 1 Space [byte] */
53 #define PCMCIA1IOSp PCMCIAIOSp /* PCMCIA 1 I/O Space [byte] */
54 #define PCMCIA1AttrSp PCMCIAAttrSp /* PCMCIA 1 Attribute Space [byte] */
55 #define PCMCIA1MemSp PCMCIAMemSp /* PCMCIA 1 Memory Space [byte] */
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/linux/drivers/comedi/drivers/
H A Dpcl730.c1 // SPDX-License-Identifier: GPL-2.0
4 * Driver for Advantech PCL-730 and clones
10 * Description: Advantech PCL-730 (& compatibles)
11 * Devices: [Advantech] PCL-730 (pcl730), PCM-3730 (pcm3730), PCL-725 (pcl725),
12 * PCL-733 (pcl733), PCL-734 (pcl734),
13 * [ADLink] ACL-7130 (acl7130), ACL-7225b (acl7225b),
14 * [ICP] ISO-730 (iso730), P8R8-DIO (p8r8dio), P16R16-DIO (p16r16dio),
15 * [Diamond Systems] OPMM-1616-XT (opmm-1616-xt), PEARL-MM-P (pearl-mm-p),
16 * IR104-PBF (ir104-pbf),
21 * [0] - I/O port base
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/linux/include/linux/mtd/
H A Dspi-nor.h1 /* SPDX-License-Identifier: GPL-2.0+ */
11 #include <linux/spi/spi-mem.h>
18 * requires a 4-byte (32-bit) address.
24 #define SPINOR_OP_RDSR 0x05 /* Read status register */
25 #define SPINOR_OP_WRSR 0x01 /* Write status register 1 byte */
26 #define SPINOR_OP_RDSR2 0x3f /* Read status register 2 */
28 #define SPINOR_OP_READ 0x03 /* Read data bytes (low frequency) */
29 #define SPINOR_OP_READ_FAST 0x0b /* Read data bytes (high frequency) */
30 #define SPINOR_OP_READ_1_1_2 0x3b /* Read data bytes (Dual Output SPI) */
31 #define SPINOR_OP_READ_1_2_2 0xbb /* Read data bytes (Dual I/O SPI) */
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/linux/tools/testing/selftests/bpf/verifier/
H A Dctx_sk_lookup.c2 "valid 1,2,4,8-byte reads from bpf_sk_lookup",
4 /* 1-byte read from family field */
8 offsetof(struct bpf_sk_lookup, family) + 1),
13 /* 2-byte read from family field */
18 /* 4-byte read from family field */
22 /* 1-byte read from protocol field */
26 offsetof(struct bpf_sk_lookup, protocol) + 1),
31 /* 2-byte read from protocol field */
36 /* 4-byte read from protocol field */
40 /* 1-byte read from remote_ip4 field */
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/linux/arch/parisc/kernel/
H A Dperf_asm.S1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 /* low-level asm for "intrigue" (PA8500-8700 CPU perf counters)
5 * Copyright (C) 2001 Randolph Chung <tausq at parisc-linux.org>
6 * Copyright (C) 2001 Hewlett-Packard (Grant Grundler)
91 ;* arg0 : rdr to be read
98 ;* arg0 : rdr to be read
100 ;* %r24 - original DR2 value
101 ;* %r1 - scratch
102 ;* %r29 - scratch
114 ; read(shift in) the RDR.
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/linux/arch/s390/mm/
H A Dhugetlbpage.c1 // SPDX-License-Identifier: GPL-2.0
21 * If the bit selected by single-bit bitmask "a" is set within "x", move
22 * it to the position indicated by single-bit bitmask "b".
34 * empty 010.000000.0 -> 00..0...1...00 in __pte_to_rste()
35 * prot-none, clean, old 111.000000.1 -> 00..1...1...00 in __pte_to_rste()
36 * prot-none, clean, young 111.000001.1 -> 01..1...1...00 in __pte_to_rste()
37 * prot-none, dirty, old 111.000010.1 -> 10..1...1...00 in __pte_to_rste()
38 * prot-none, dirty, young 111.000011.1 -> 11..1...1...00 in __pte_to_rste()
39 * read-only, clean, old 111.000100.1 -> 00..1...1...01 in __pte_to_rste()
40 * read-only, clean, young 101.000101.1 -> 01..1...0...01 in __pte_to_rste()
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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-driver-w1_therm5 (RW) read or write TH and TL (Temperature High an Low) alarms.
7 (typical -55 degC to 125 degC), if not values will be trimmed
11 master level, refer to Documentation/w1/w1-generic.rst for
40 * '1': device externally powered
41 * '-xx': xx is kernel error when reading power status
55 values after power-on. Read or write are :
59 * '-xx': xx is kernel error when reading the resolution
62 Some DS18B20 clones are fixed in 12-bit resolution, so the
63 actual resolution is read back from the chip and verified. Error
73 (RO) return the temperature in 1/1000 degC.
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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.
31 It's used to indicate transient AP1 state. Write 1 to this
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/linux/drivers/gpu/drm/amd/display/modules/hdcp/
H A Dhdcp_ddc.c31 #define HDCP_I2C_ADDR 0x3a /* 0x74 >> 1*/
32 #define KSV_READ_SIZE 0xf /* 0x6803b - 0x6802c */
35 #define DP_CP_IRQ (1 << 2)
38 MOD_HDCP_MESSAGE_ID_INVALID = -1,
152 static enum mod_hdcp_status read(struct mod_hdcp *hdcp, in read() function
172 success = hdcp->config.ddc.funcs.read_dpcd(hdcp->config.ddc.handle, in read()
180 buf_len -= cur_size; in read()
188 success = hdcp->config.ddc.funcs.read_i2c( in read()
189 hdcp->config.ddc.handle, in read()
211 status = read(hdcp, msg_id, buf + data_offset, cur_size); in read_repeatedly()
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/linux/tools/perf/pmu-events/arch/x86/grandridge/
H A Duncore-cache.json4 "Counter": "0,1,2,3",
7 "PerPkg": "1",
13 "Counter": "0,1,2,3",
16 "Experimental": "1",
17 "PerPkg": "1",
23 "Counter": "0,1,2,3",
26 "PerPkg": "1",
32 "Counter": "0,1,2,3",
35 "PerPkg": "1",
42 "Counter": "0,1,2,3",
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/linux/Documentation/devicetree/bindings/memory-controllers/
H A Dti-aemif.txt4 provide a glue-less interface to a variety of asynchronous memory devices like
11 Davinci DM646x - http://www.ti.com/lit/ug/sprueq7c/sprueq7c.pdf
12 OMAP-L138 (DA850) - http://www.ti.com/lit/ug/spruh77a/spruh77a.pdf
13 Kestone - http://www.ti.com/lit/ug/sprugz3a/sprugz3a.pdf
17 - compatible: "ti,davinci-aemif"
18 "ti,keystone-aemif"
19 "ti,da850-aemif"
21 - reg: contains offset/length value for AEMIF control registers
24 - #address-cells: Must be 2. The partition number has to be encoded in the
25 first address cell and it may accept values 0..N-1
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/linux/tools/perf/pmu-events/arch/arm64/
H A Drecommended.json3 "PublicDescription": "Attributable Level 1 data cache access, read",
6 "BriefDescription": "L1D cache access, read"
9 "PublicDescription": "Attributable Level 1 data cache access, write",
15 "PublicDescription": "Attributable Level 1 data cache refill, read",
18 "BriefDescription": "L1D cache refill, read"
21 "PublicDescription": "Attributable Level 1 data cache refill, write",
27 "PublicDescription": "Attributable Level 1 data cache refill, inner",
33 "PublicDescription": "Attributable Level 1 data cache refill, outer",
39 "PublicDescription": "Attributable Level 1 data cache Write-Back, victim",
42 "BriefDescription": "L1D cache Write-Back, victim"
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/linux/drivers/gpu/drm/v3d/
H A Dv3d_perfmon.c1 // SPDX-License-Identifier: GPL-2.0
9 #define V3D_PERFMONID_MIN 1
13 …{"FEP", "FEP-valid-primitives-no-rendered-pixels", "[FEP] Valid primitives that result in no rende…
14 …{"FEP", "FEP-valid-primitives-rendered-pixels", "[FEP] Valid primitives for all rendered tiles (pr…
15 {"FEP", "FEP-clipped-quads", "[FEP] Early-Z/Near/Far clipped quads"},
16 {"FEP", "FEP-valid-quads", "[FEP] Valid quads"},
17 …{"TLB", "TLB-quads-not-passing-stencil-test", "[TLB] Quads with no pixels passing the stencil test…
18 …{"TLB", "TLB-quads-not-passing-z-and-stencil-test", "[TLB] Quads with no pixels passing the Z and …
19 …{"TLB", "TLB-quads-passing-z-and-stencil-test", "[TLB] Quads with any pixels passing the Z and ste…
20 {"TLB", "TLB-quads-with-zero-coverage", "[TLB] Quads with all pixels having zero coverage"},
[all …]
/linux/tools/perf/pmu-events/arch/x86/icelakex/
H A Duncore-memory.json4 "Counter": "0,1,2,3",
7 "PerPkg": "1",
8 …mmands are issued to open up a page on the DRAM devices so that it can be read or written to with …
14 "Counter": "0,1,2,3",
17 "Experimental": "1",
18 "PerPkg": "1",
19 …mmands are issued to open up a page on the DRAM devices so that it can be read or written to with …
25 "Counter": "0,1,2,3",
28 "PerPkg": "1",
34 "BriefDescription": "All DRAM read CAS commands issued (including underfills)",
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/linux/tools/perf/pmu-events/arch/x86/sapphirerapids/
H A Dcache.json4 "Counter": "0,1,2,3",
13 "Counter": "0,1,2,3",
16 …opportunistic replacements, and replacements that require stall-for-replace or block-for-replace. …
22 "Counter": "0,1,2,3",
31 "Counter": "0,1,2,3",
32 "CounterMask": "1",
33 "EdgeDetect": "1",
42 "Counter": "0,1,2,3",
43 "Deprecated": "1",
52 "Counter": "0,1,2,3",
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/linux/tools/perf/pmu-events/arch/x86/emeraldrapids/
H A Dcache.json4 "Counter": "0,1,2,3",
13 "Counter": "0,1,2,3",
16 …opportunistic replacements, and replacements that require stall-for-replace or block-for-replace. …
22 "Counter": "0,1,2,3",
31 "Counter": "0,1,2,3",
32 "CounterMask": "1",
33 "EdgeDetect": "1",
42 "Counter": "0,1,2,3",
43 "Deprecated": "1",
52 "Counter": "0,1,2,3",
[all …]
/linux/Documentation/input/joydev/
H A Djoystick-api.rst1 .. _joystick-api:
7 :Author: Ragnar Hojland Espinosa <ragnar@macula.net> - 7 Aug 1998
18 driver now reports only any changes of its state. See joystick-api.txt,
35 (JS_EVENT_INIT) that you can read to obtain the initial state of the
49 read (fd, &e, sizeof(e));
60 If the read is successful, it will return sizeof(e), unless you wanted to read
61 more than one event per read as described in section 3.1.
65 -------------
86 ---------------
95 1st Axis X 0
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/linux/tools/testing/selftests/mm/
H A Dhugetlb-read-hwpoison.c1 // SPDX-License-Identifier: GPL-2.0
24 TEST_FAILED = 1,
79 printf(PREFIX PREFIX "expect to read 0x%lx bytes of data in total\n", in seek_read_hugepage_filemap()
87 ret_count = read(fd, buf, wr_chunk_size); in seek_read_hugepage_filemap()
89 printf(PREFIX PREFIX "read reach end of the file\n"); in seek_read_hugepage_filemap()
92 perror(PREFIX ERROR_PREFIX "read failed"); in seek_read_hugepage_filemap()
101 printf(PREFIX PREFIX "actually read 0x%lx bytes of data in total\n", in seek_read_hugepage_filemap()
115 printf(PREFIX PREFIX "expect to read 0x%lx bytes of data in total\n", in read_hugepage_filemap()
118 ret_count = read(fd, buf, wr_chunk_size); in read_hugepage_filemap()
120 printf(PREFIX PREFIX "read reach end of the file\n"); in read_hugepage_filemap()
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/linux/drivers/rtc/
H A Drtc-ds1685.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * An rtc driver for the Dallas/Maxim DS1685/DS1687 and related real-time
6 * Copyright (C) 2011-2014 Joshua Kinard <linux@kumba.dev>.
7 * Copyright (C) 2009 Matthias Fuchs <matthias.fuchs@esd-electronics.com>.
10 * DS1685/DS1687 3V/5V Real-Time Clocks, 19-5215, Rev 4/10.
11 * DS17x85/DS17x87 3V/5V Real-Time Clocks, 19-5222, Rev 4/10.
12 * DS1689/DS1693 3V/5V Serialized Real-Time Clocks, Rev 112105.
33 /* ----------------------------------------------------------------------- */
35 * Standard read/write
40 * ds1685_read - read a value from an rtc register.
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/linux/tools/virtio/virtio-trace/
H A DREADME1 Trace Agent for virtio-trace
6 - splice a page of ring-buffer to read_pipe without memory copying
7 - splice the page from write_pipe to virtio-console without memory copying
8 - write trace data to stdout by using -o option
9 - controlled by start/stop orders from a Host
12 1) Initialize all structures.
13 2) Create a read/write thread per CPU. Each thread is bound to a CPU.
14 The read/write threads hold it.
17 the controller wake read/write threads.
18 5) The read/write threads start to read trace data from ring-buffers and
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/linux/drivers/net/ethernet/intel/igb/
H A De1000_nvm.c1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2007 - 2018 Intel Corporation. */
11 * igb_raise_eec_clk - Raise EEPROM clock
22 udelay(hw->nvm.delay_usec); in igb_raise_eec_clk()
26 * igb_lower_eec_clk - Lower EEPROM clock
37 udelay(hw->nvm.delay_usec); in igb_lower_eec_clk()
41 * igb_shift_out_eec_bits - Shift data bits our to the EEPROM
52 struct e1000_nvm_info *nvm = &hw->nvm; in igb_shift_out_eec_bits()
56 mask = 1u << (count - 1); in igb_shift_out_eec_bits()
57 if (nvm->type == e1000_nvm_eeprom_spi) in igb_shift_out_eec_bits()
[all …]
/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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/linux/tools/testing/selftests/hid/
H A Dhid_bpf.c1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2022-2024 Red Hat */
26 if (self->hidraw_fd) in detach_bpf()
27 close(self->hidraw_fd); in detach_bpf()
28 self->hidraw_fd = 0; in detach_bpf()
30 if (!self->skel) in detach_bpf()
33 hid__detach(self->skel); in detach_bpf()
35 for (i = 0; i < ARRAY_SIZE(self->hid_links); i++) { in detach_bpf()
36 if (self->hid_links[i]) in detach_bpf()
37 bpf_link__destroy(self->hid_links[i]); in detach_bpf()
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