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/linux/Documentation/devicetree/bindings/memory-controllers/
H A Dti,gpmc-child.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/memory-controllers/ti,gpmc-child.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Tony Lindgren <tony@atomide.com>
11 - Roger Quadros <rogerq@kernel.org>
24 gpmc,sync-clk-ps:
28 # Chip-select signal timings corresponding to GPMC_CONFIG2:
29 gpmc,cs-on-ns:
33 gpmc,cs-rd-off-ns:
[all …]
H A Dst,stm32-fmc2-ebi-props.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/memory-controllers/st,stm32-fmc2-ebi-props.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Christophe Kerello <christophe.kerello@foss.st.com>
11 - Marek Vasut <marex@denx.de>
14 st,fmc2-ebi-cs-transaction-type:
25 8: Synchronous read synchronous write PSRAM.
26 9: Synchronous read asynchronous write PSRAM.
27 10: Synchronous read synchronous write NOR.
[all …]
/linux/scripts/coccinelle/api/
H A Dstream_open.cocci1 // SPDX-License-Identifier: GPL-2.0
4 // Search for stream-like files that are using nonseekable_open and convert
5 // them to stream_open. A stream-like file is a file that does not use ppos in
6 // its read and write. Rationale for the conversion is to avoid deadlock in
7 // between read and write.
11 virtual explain // explain decisions in the patch (SPFLAGS="-D explain")
13 // stream-like reader & writer - ones that do not depend on f_pos.
38 identifier wait =~ "^wait_.*";
42 wait(...)
48 // XXX wait_* can be called not directly from current function (e.g. func -> f -> g -> wait())
[all …]
/linux/include/uapi/linux/
H A Ddma-buf.h1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
26 * struct dma_buf_sync - Synchronize with CPU access.
29 * possible to guarantee coherency between the CPU-visible map and underlying
35 * with DMA_BUF_SYNC_START and the appropriate read/write flags. Once the
37 * DMA_BUF_SYNC_END and the same read/write flags.
43 * wait for buffer to be ready for reading or writing before calling this
45 * follow-up work is not submitted to GPU or other device driver until
50 * poll() on the DMA buffer file descriptor. If the driver or API requires
51 * explicit synchronization, the client may have to wait on a sync_file or
89 * struct dma_buf_export_sync_file - Get a sync_file from a dma-buf
[all …]
/linux/drivers/mtd/nand/raw/
H A Dnand_legacy.c1 // SPDX-License-Identifier: GPL-2.0
4 * 2002-2006 Thomas Gleixner (tglx@linutronix.de)
23 * nand_read_byte - [DEFAULT] read one byte from the chip
30 return readb(chip->legacy.IO_ADDR_R); in nand_read_byte()
34 * nand_read_byte16 - [DEFAULT] read one byte endianness aware from the chip
42 return (uint8_t) cpu_to_le16(readw(chip->legacy.IO_ADDR_R)); in nand_read_byte16()
46 * nand_select_chip - [DEFAULT] control CE line
48 * @chipnr: chipnumber to select, -1 for deselect
55 case -1: in nand_select_chip()
56 chip->legacy.cmd_ctrl(chip, NAND_CMD_NONE, in nand_select_chip()
[all …]
/linux/fs/
H A Dsync.c1 // SPDX-License-Identifier: GPL-2.0
3 * High-level sync()-related operations
19 #include <linux/backing-dev.h>
26 * Write out and wait upon all dirty data associated with this
38 WARN_ON(!rwsem_is_locked(&sb->s_umount)); in sync_filesystem()
41 * No point in syncing out anything if the filesystem is read-only. in sync_filesystem()
50 * speeds up the wait == 1 case since in that case write_inode() in sync_filesystem()
51 * methods call sync_dirty_buffer() and thus effectively write one block in sync_filesystem()
55 if (sb->s_op->sync_fs) { in sync_filesystem()
56 ret = sb->s_op->sync_fs(sb, 0); in sync_filesystem()
[all …]
/linux/include/linux/platform_data/
H A Dgpmc-omap.h1 /* SPDX-License-Identifier: GPL-2.0-only */
5 * Copyright (C) 2014 Texas Instruments, Inc. - https://www.ti.com
34 /* Chip-select signal timings corresponding to GPMC_CS_CONFIG2 */
37 u32 cs_wr_off; /* Write deassertion time */
42 u32 adv_wr_off; /* Write deassertion time */
45 u32 adv_aad_mux_wr_off; /* ADV write deassertion time for AAD */
59 u32 access; /* Start-cycle to first data valid delay */
61 u32 wr_cycle; /* Total write cycle time */
69 /* The following are only on OMAP3430 */
97 u32 t_cez_w; /* write CS deassertion to high Z */
[all …]
/linux/Documentation/block/
H A Dstat.rst30 read merges requests number of read I/Os merged with in-queue I/O
32 read ticks milliseconds total wait time for read requests
33 write I/Os requests number of write I/Os processed
34 write merges requests number of write I/Os merged with in-queue I/O
35 write sectors sectors number of sectors written
36 write ticks milliseconds total wait time for write requests
39 time_in_queue milliseconds total wait time for all requests
41 discard merges requests number of discard I/Os merged with in-queue I/O
43 discard ticks milliseconds total wait time for discard requests
45 flush ticks milliseconds total wait time for flush requests
[all …]
/linux/drivers/md/bcache/
H A Dbtree.h1 /* SPDX-License-Identifier: GPL-2.0 */
13 * the key is the highest key in the child node - except that the highest key in
14 * an interior node is always MAX_KEY. The size field refers to the size on disk
15 * of the child node - this would allow us to have variable sized btree nodes
19 * thoroughly. Btree nodes on disk will in practice have extents that overlap
21 * overlapping extents - when we read in a btree node from disk, the first thing
26 * specifying read vs. write locking, and the embedded closure is used for
27 * waiting on IO or reserve memory.
35 * disk if necessary. This function is almost never called directly though - the
36 * btree() macro is used to get a btree node, call some function on it, and
[all …]
/linux/drivers/w1/masters/
H A Damd_axi_w1.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * amd_axi_w1 - AMD 1Wire programmable logic bus host driver
5 * Copyright (C) 2022-2023 Advanced Micro Devices, Inc. All Rights Reserved.
19 #include <linux/wait.h>
23 /* 1-wire AMD IP definition */
62 atomic_t flag; /* Set on IRQ, cleared once serviced */
68 * amd_axi_w1_wait_irq_interruptible_timeout() - Wait for IRQ with timeout.
71 * @IRQ: IRQ channel to wait on
73 * Return: %0 - OK, %-EINTR - Interrupted, %-EBUSY - Timed out
80 /* Enable the IRQ requested and wait for flag to indicate it's been triggered */ in amd_axi_w1_wait_irq_interruptible_timeout()
[all …]
/linux/Documentation/misc-devices/
H A Dspear-pcie-gadget.rst1 .. SPDX-License-Identifier: GPL-2.0
37 -----------------------
52 write behavior of nodes:
53 ------------------------
56 link write UP to enable ltsmm DOWN to disable
57 int_type write interrupt type to be configured and (int_type could be
61 inta write 1 to assert INTA and 0 to de-assert.
62 send_msi write MSI vector to be sent.
63 vendor_id write vendor id(hex) to be programmed.
64 device_id write device id(hex) to be programmed.
[all …]
/linux/fs/netfs/
H A Dlocking.c1 // SPDX-License-Identifier: GPL-2.0
13 * inode_dio_wait_interruptible - wait for outstanding DIO requests to finish
14 * @inode: inode to wait for
20 * to i_dio_count, usually by inode->i_mutex.
28 return !inode_dio_finished(inode) ? -ERESTARTSYS : 0; in netfs_inode_dio_wait_interruptible()
31 /* Call with exclusively locked inode->i_rwsem */
34 if (!test_bit(NETFS_ICTX_ODIRECT, &ictx->flags)) in netfs_block_o_direct()
36 clear_bit(NETFS_ICTX_ODIRECT, &ictx->flags); in netfs_block_o_direct()
37 return netfs_inode_dio_wait_interruptible(&ictx->inode); in netfs_block_o_direct()
41 * netfs_start_io_read - declare the file is being used for buffered reads
[all …]
/linux/drivers/tty/serial/
H A Dzs.h1 /* SPDX-License-Identifier: GPL-2.0 */
28 unsigned int tty_break; /* Set on BREAK condition. */
34 u8 regs[ZS_NUM_REGS]; /* Channel write registers. */
38 * Per-SCC state for locking and the interrupt handler.
53 #define ZS_BPS_TO_BRG(bps, freq) ((((freq) + (bps)) / (2 * (bps))) - 2)
59 /* Write Register 0 (Command) */
81 #define RES_RxINT_FC 0x20 /* Reset RxINT on First Character */
90 /* Write Register 1 (Tx/Rx/Ext Int Enable and WAIT/DMA Commands) */
96 #define RxINT_FCERR 0x8 /* Rx Int on First Character Only or Error */
97 #define RxINT_ALL 0x10 /* Int on all Rx Characters or error */
[all …]
H A Dip22zilog.h1 /* SPDX-License-Identifier: GPL-2.0 */
32 #define BPS_TO_BRG(bps, freq) ((((freq) + (bps)) / (2 * (bps))) - 2)
38 /* Write Register 0 */
60 #define RES_RxINT_FC 0x20 /* Reset RxINT on First Character */
69 /* Write Register 1 */
76 #define RxINT_FCERR 0x8 /* Rx Int on First Character Only or Error */
77 #define INT_ALL_Rx 0x10 /* Int on all Rx Characters or error */
78 #define INT_ERR_Rx 0x18 /* Int on error only */
81 #define WT_RDY_RT 0x20 /* Wait/Ready on R/T */
82 #define WT_FN_RDYFN 0x40 /* Wait/FN/Ready FN */
[all …]
/linux/mm/
H A Dfilemap.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 1994-1999 Linus Torvalds
30 #include <linux/error-injection.h>
33 #include <linux/backing-dev.h>
73 * finished 'unifying' the page and buffer cache and SMP-threaded the
74 * page-cache, 21.05.1999, Ingo Molnar <mingo@redhat.com>
76 * SMP-threaded pagemap-LRU 1999, Andrea Arcangeli <andrea@suse.de>
82 * ->i_mmap_rwsem (truncate_pagecache)
83 * ->private_lock (__free_pte->block_dirty_folio)
84 * ->swap_lock (exclusive_swap_page, others)
[all …]
/linux/tools/testing/selftests/mm/
H A Dcow.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * COW (Copy On Write) tests.
21 #include <sys/wait.h>
72 for (; size; addr += pagesize, size -= pagesize) in range_is_swapped()
85 if (pipe(comm_pipes->child_ready) < 0) { in setup_comm_pipes()
87 return -errno; in setup_comm_pipes()
89 if (pipe(comm_pipes->parent_ready) < 0) { in setup_comm_pipes()
91 close(comm_pipes->child_ready[0]); in setup_comm_pipes()
92 close(comm_pipes->child_ready[1]); in setup_comm_pipes()
93 return -errno; in setup_comm_pipes()
[all …]
/linux/drivers/net/phy/
H A Dphy-core.c1 // SPDX-License-Identifier: GPL-2.0+
10 #include "phylib-internal.h"
11 #include "phy-caps.h"
14 * phy_speed_to_str - Return a string representing the PHY link speed
61 return "Unsupported (update phy-core.c)"; in phy_speed_to_str()
67 * phy_duplex_to_str - Return string describing the duplex
79 return "Unsupported (update phy-core.c)"; in phy_duplex_to_str()
84 * phy_rate_matching_to_str - Return a string describing the rate matching
98 return "open-loop"; in phy_rate_matching_to_str()
100 return "Unsupported (update phy-core.c)"; in phy_rate_matching_to_str()
[all …]
/linux/drivers/dpll/zl3073x/
H A Dcore.c1 // SPDX-License-Identifier: GPL-2.0-only
106 .range_max = ZL_RANGE_OFFSET + ZL_NUM_REGS - 1,
117 /* Only page selector is non-volatile */ in zl3073x_is_volatile_reg()
124 .max_register = ZL_RANGE_OFFSET + ZL_NUM_REGS - 1,
133 * zl3073x_ref_freq_factorize - factorize given frequency
142 * Return: 0 on success, -EINVAL if the frequency cannot be factorized
170 return -EINVAL; in zl3073x_ref_freq_factorize()
181 lockdep_assert_held(&zldev->multiop_lock); in zl3073x_check_reg()
185 dev_err(zldev->dev, "Index out of range for reg 0x%04lx\n", in zl3073x_check_reg()
191 dev_err(zldev->dev, "Invalid size %zu for reg 0x%04lx\n", in zl3073x_check_reg()
[all …]
/linux/drivers/net/hamradio/
H A Dz8530.h1 /* SPDX-License-Identifier: GPL-2.0 */
6 /* Write Register 0 */
28 #define RES_RxINT_FC 0x20 /* Reset RxINT on First Character */
37 /* Write Register 1 */
44 #define RxINT_FCERR 0x8 /* Rx Int on First Character Only or Error */
45 #define INT_ALL_Rx 0x10 /* Int on all Rx Characters or error */
46 #define INT_ERR_Rx 0x18 /* Int on error only */
48 #define WT_RDY_RT 0x20 /* Wait/Ready on R/T */
49 #define WT_FN_RDYFN 0x40 /* Wait/FN/Ready FN */
50 #define WT_RDY_ENAB 0x80 /* Wait/Ready Enable */
[all …]
/linux/include/linux/
H A Dsbitmap.h1 /* SPDX-License-Identifier: GPL-2.0-only */
6 * Copyright (C) 2013-2014 Jens Axboe
22 #include <linux/wait.h>
27 * struct sbitmap_word - Word in a &struct sbitmap.
41 * @swap_lock: serializes simultaneous updates of ->word and ->cleared
47 * struct sbitmap - Scalable bitmap.
49 * A &struct sbitmap is spread over multiple cachelines to avoid ping-pong. This
69 * @round_robin: Allocate bits in strict round-robin order.
81 * This is per-cpu, which allows multiple users to stick to different
91 * struct sbq_wait_state - Wait queue in a &struct sbitmap_queue.
[all …]
/linux/tools/perf/pmu-events/arch/s390/cf_z17/
H A Dextended.json3 "Unit": "CPU-M-CF",
6 "BriefDescription": "L1D Read-only Exclusive Writes",
7 …"PublicDescription": "A directory write to the Level-1 Data cache where the line was originally in…
10 "Unit": "CPU-M-CF",
14 …) and the request was made by the Level-1 Data cache. This is a replacement for what was provided …
17 "Unit": "CPU-M-CF",
21 …-1 Data cache. Incremented by one for every TLB2 miss in progress for the Level-1 Data cache on th…
24 "Unit": "CPU-M-CF",
28 … into the Combined Region and Segment Table Entry array in the Level-2 TLB for a one-megabyte page…
31 "Unit": "CPU-M-CF",
[all …]
/linux/arch/arm/mach-sa1100/
H A Dssp.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * linux/arch/arm/mach-sa1100/ssp.c
8 * IO-based SSP applications.
38 * ssp_write_word - write a word to the SSP port
39 * @data: 16-bit, MSB justified data to write.
41 * Wait for a free entry in the SSP transmit FIFO, and write a data
42 * word to the SSP port. Wait for the SSP port to start sending
48 * %-ETIMEDOUT timeout occurred
56 if (!--timeout) in ssp_write_word()
57 return -ETIMEDOUT; in ssp_write_word()
[all …]
/linux/drivers/mtd/chips/
H A Dcfi_cmdset_0020.c1 // SPDX-License-Identifier: GPL-2.0
9 * - completely revamped method functions so they are aware and
11 * - scalability vs code size is completely set at compile-time
13 * - optimized write buffer method
14 * 06/21/2002 Joern Engel <joern@wh.fh-wedel.de> and others
15 * - modified Intel Command Set 0x0001 to support ST Advanced Architecture
17 * - added a writev function
18 * 07/13/2005 Joern Engel <joern@wh.fh-wedel.de>
19 * - Plugged memory leak in cfi_staa_writev().
69 printk(" Feature/Command Support: %4.4X\n", extp->FeatureSupport); in cfi_tell_features()
[all …]
/linux/drivers/misc/genwqe/
H A Dcard_base.h1 /* SPDX-License-Identifier: GPL-2.0-only */
11 * Author: Joerg-Stephan Vogt <jsvogt@de.ibm.com>
42 #define GENWQE_DDCB_MAX 32 /* DDCBs on the work-queue */
62 #define PCI_SUBSYSTEM_ID_GENWQE5 0x035f /* Genwqe A5 Subsystem-ID */
63 #define PCI_SUBSYSTEM_ID_GENWQE5_NEW 0x044b /* Genwqe A5 Subsystem-ID */
67 #define PCI_SUBSYSTEM_ID_GENWQE5_SRIOV 0x0000 /* Genwqe A5 Subsystem-ID */
73 * struct genwqe_reg - Genwqe data dump functionality
82 * enum genwqe_dbg_type - Specify chip unit to dump/debug
99 #define GENWQE_INJECT_HARDWARE_FAILURE 0x00000001 /* injects -1 reg reads */
107 * Error-handling in case of card malfunction
[all …]
/linux/Documentation/driver-api/soundwire/
H A Dbra.rst6 -----------
12 ------------
14 The SoundWire 1.x specification provides a mechanism to speed-up
17 solution based on the Bulk Payload Transport (BPT) definitions.
20 one byte per frame with write/read commands. With a typical 48kHz
27 (1) Each frame can only support a read or a write transfer, with a
28 10-byte overhead per frame (header and footer response).
36 Port 0, and likewise the Manager SHALL expose audio-like Ports
40 (4) The BRA transport efficiency depends on the available
41 bandwidth. If there are no on-going audio transfers, the entire
[all …]

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