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/linux/include/linux/
H A Dsrcu.h1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Sleepable Read-Copy Update mechanism for mutual exclusion
11 * For detailed explanation of Read-Copy Update mechanism see -
68 /* Values for SRCU Tree srcu_data ->srcu_reader_flavor, but also used by rcutorture. */
71 // 0x4 // SRCU-lite is no longer with us.
98 * get_completed_synchronize_srcu - Return a pre-completed polled state cookie
113 // not-yet-completed SRCU grace periods.
117 * same_state_synchronize_srcu - Are two old-state values identical?
118 * @oldstate1: First old-state value.
119 * @oldstate2: Second old-state value.
[all …]
H A Dsrcutree.h1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Sleepable Read-Copy Update mechanism for mutual exclusion,
27 * Per-CPU structure feeding into leaf srcu_node, similar in function
31 /* Read-side state. */
36 /* Update-side state. */
49 /* ->srcu_data_have_cbs[]. */
60 /* if greater than ->srcu_gp_seq. */
69 * Per-SRCU-domain structure, update-side data linked from srcu_struct.
75 int srcu_size_state; /* Small-to-big transition state. */
79 unsigned long srcu_gp_seq; /* Grace-period seq #. */
[all …]
H A Di2c-algo-pca.h1 /* SPDX-License-Identifier: GPL-2.0 */
10 #define I2C_PCA_OSC_PER 3 /* e10-8s */
23 #define I2C_PCA_STA 0x00 /* STATUS Read Only */
25 #define I2C_PCA_DAT 0x01 /* DATA Read/Write */
26 #define I2C_PCA_ADR 0x02 /* OWN ADR Read/Write */
27 #define I2C_PCA_CON 0x03 /* CONTROL Read/Write */
31 #define I2C_PCA_IND 0x02 /* INDIRECT Read/Write */
44 #define I2C_PCA_MODE_FAST 0x01 /* Fast mode */
45 #define I2C_PCA_MODE_FASTP 0x02 /* Fast Plus mode */
57 * struct pca_i2c_bus_settings - The configured PCA i2c bus settings
/linux/drivers/mtd/spi-nor/
H A Dsfdp.c1 // SPDX-License-Identifier: GPL-2.0
8 #include <linux/mtd/spi-nor.h>
14 #define SFDP_PARAM_HEADER_ID(p) (((p)->id_msb << 8) | (p)->id_lsb)
16 (((p)->parameter_table_pointer[2] << 16) | \
17 ((p)->parameter_table_pointer[1] << 8) | \
18 ((p)->parameter_table_pointer[0] << 0))
19 #define SFDP_PARAM_HEADER_PARAM_LEN(p) ((p)->lengt
236 spi_nor_set_read_settings_from_bfpt(struct spi_nor_read_command * read,u16 half,enum spi_nor_protocol proto) spi_nor_set_read_settings_from_bfpt() argument
502 struct spi_nor_read_command *read; spi_nor_parse_bfpt() local
1037 const struct sfdp_4bait *read = &reads[i]; spi_nor_parse_4bait() local
[all...]
/linux/drivers/bus/
H A Dqcom-ebi2.c1 // SPDX-License-Identifier: GPL-2.0-only
41 * Bits 31-28: RECOVERY recovery cycles (0 = 1, 1 = 2 etc) this is the time the
42 * memory continues to drive the data bus after OE is de-asserted.
43 * Inserted when reading one CS and switching to another CS or read
45 * Bits 27-24: WR_HOLD write hold cycles, these are extra cycles inserted after
49 * Bits 23-16: WR_DELTA initial latency for write cycles inserted for the first
51 * Bits 15-8: RD_DELTA initial latency for read cycles inserted for the first
52 * read to a page or burst memory
53 * Bits 7-4: WR_WAIT number of wait cycles for every write access, 0=1 cycle
55 * Bits 3-0: RD_WAIT number of wait cycles for every read access, 0=1 cycle
[all …]
/linux/Documentation/filesystems/ext4/
H A Djournal.rst1 .. SPDX-License-Identifier: GPL-2.0
4 --------------
10 “important” data writes on-disk as quickly as possible. Once the important
15 read-write-erases) before erasing the commit record. Should the system
31 In case of ``data=ordered`` mode, Ext4 also supports fast commits which
33 mode works by logging metadata blocks to the journal. In fast commit
35 affected metadata in fast commit space that is shared with JBD2.
36 Once the fast commit area fills in or if fast commit is not possible
38 A full commit invalidates all the fast commits that happened before
39 it and thus it makes the fast commit area empty for further fast
[all …]
/linux/Documentation/admin-guide/device-mapper/
H A Dcache.rst8 dm-cache is a device mapper target written by Joe Thornber, Heinz
15 This device-mapper solution allows us to insert this caching at
17 a thin-provisioning pool. Caching solutions that are integrated more
20 The target reuses the metadata library used in the thin-provisioning
23 The decision as to what data to migrate and when is left to a plug-in
35 Migration from slow device to fast device.
37 Migration from fast device to slow device.
46 Sub-devices
47 -----------
52 1. An origin device - the big, slow one.
[all …]
/linux/drivers/infiniband/ulp/srp/
H A Dib_srp.h14 * - Redistributions of source code must retain the above
18 * - Redistributions in binary form must reproduce the above
62 SRP_DEFAULT_CMD_SQ_SIZE = SRP_DEFAULT_QUEUE_SIZE - SRP_RSP_SQ_SIZE -
146 * @max_it_iu_len: Maximum initiator-to-target information unit length.
147 * @max_ti_iu_len: Maximum target-to-initiator information unit length.
155 /* These are read-only in the hot path */
196 * struct srp_target_port - RDMA port in the SRP target system
201 /* read and written in the hot path */
204 /* read only in the hot path */
283 * struct srp_fr_desc - fast registration work request arguments
[all …]
/linux/tools/testing/selftests/bpf/prog_tests/
H A Dtcp_hdr_options.c1 // SPDX-License-Identifier: GPL-2.0
19 #define CG_NAME "/tcpbpf-hdr-opt-test"
46 return -1; in create_netns()
49 return -1; in create_netns()
57 prefix ? : "", hdr_stg->active, hdr_stg->resend_syn, in print_hdr_stg()
58 hdr_stg->syncookie, hdr_stg->fastopen); in print_hdr_stg()
64 prefix ? : "", opt->flags, opt->max_delack_ms, opt->rand); in print_option()
69 close(sk_fds->srv_fd); in sk_fds_close()
70 close(sk_fds->passive_fd); in sk_fds_close()
71 close(sk_fds->active_fd); in sk_fds_close()
[all …]
/linux/Documentation/devicetree/bindings/mtd/
H A Dspear_smi.txt4 - compatible : "st,spear600-smi"
5 - reg : Address range of the mtd chip
6 - #address-cells, #size-cells : Must be present if the device has sub-nodes
8 - interrupts: Should contain the STMMAC interrupts
9 - clock-rate : Functional clock rate of SMI in Hz
12 - st,smi-fast-mode : Flash supports read in fast mode
17 compatible = "st,spear600-smi";
18 #address-cells = <1>;
19 #size-cells = <1>;
21 interrupt-parent = <&vic1>;
[all …]
/linux/arch/mips/include/asm/
H A Dmips-gic.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
8 # error Please include asm/mips-cps.h rather than asm/mips-gic.h
29 /* For read-only shared registers */
34 /* For read-write shared registers */
39 /* For read-only local registers */
44 /* For read-write local registers */
49 /* For read-only shared per-interrupt registers */
62 /* For read-write shared per-interrupt registers */
81 /* For read-only local per-interrupt registers */
88 /* For read-write local per-interrupt registers */
[all …]
/linux/arch/arm/boot/dts/aspeed/
H A Daspeed-bmc-opp-vesnin.dts1 // SPDX-License-Identifier: GPL-2.0+
3 /dts-v1/;
5 #include "aspeed-g4.dtsi"
6 #include <dt-bindings/gpio/aspeed-gpio.h>
10 compatible = "yadro,vesnin-bmc", "aspeed,ast2400";
13 stdout-path = &uart5;
21 reserved-memory {
22 #address-cells = <1>;
23 #size-cells = <1>;
27 no-map;
[all …]
H A Dast2500-facebook-netbmc-common.dtsi1 // SPDX-License-Identifier: GPL-2.0+
4 #include "aspeed-g5.dtsi"
22 aspeed,reset-type = "system";
31 pinctrl-names = "default";
32 pinctrl-0 = <&pinctrl_txd1_default
38 pinctrl-names = "default";
39 pinctrl-0 = <&pinctrl_txd3_default
52 m25p,fast-read;
58 m25p,fast-read;
65 pinctrl-names = "default";
[all …]
H A Daspeed-bmc-qcom-dc-scm-v1.dts1 // SPDX-License-Identifier: GPL-2.0-or-later
2 // Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
4 /dts-v1/;
6 #include "aspeed-g6.dtsi"
9 model = "Qualcomm DC-SCM V1 BMC";
10 compatible = "qcom,dc-scm-v1-bmc", "aspeed,ast2600";
17 stdout-path = &uart5;
30 ethphy3: ethernet-phy@1 {
31 compatible = "ethernet-phy-ieee802.3-c22";
40 phy-mode = "rgmii";
[all …]
H A Daspeed-ast2500-evb.dts1 // SPDX-License-Identifier: GPL-2.0+
2 /dts-v1/;
4 #include "aspeed-g5.dtsi"
8 compatible = "aspeed,ast2500-evb", "aspeed,ast2500";
15 stdout-path = &uart5;
23 reserved-memory {
24 #address-cells = <1>;
25 #size-cells = <1>;
31 compatible = "shared-dma-pool";
41 m25p,fast-read;
[all …]
H A Daspeed-bmc-supermicro-x11spi.dts1 // SPDX-License-Identifier: GPL-2.0
4 /dts-v1/;
6 #include "aspeed-g5.dtsi"
10 compatible = "supermicro,x11spi-bmc", "aspeed,ast2500";
13 stdout-path = &uart5;
21 reserved-memory {
22 #address-cells = <1>;
23 #size-cells = <1>;
27 no-map;
32 iio-hwmon {
[all …]
H A Daspeed-bmc-intel-s2600wf.dts1 // SPDX-License-Identifier: GPL-2.0
3 /dts-v1/;
5 #include "aspeed-g5.dtsi"
9 compatible = "intel,s2600wf-bmc", "aspeed,ast2500";
12 stdout-path = &uart5;
20 reserved-memory {
21 #address-cells = <1>;
22 #size-cells = <1>;
26 no-map;
31 iio-hwmon {
[all …]
H A Daspeed-bmc-inspur-on5263m5.dts1 // SPDX-License-Identifier: GPL-2.0
3 /dts-v1/;
5 #include "aspeed-g5.dtsi"
6 #include <dt-bindings/gpio/aspeed-gpio.h>
10 compatible = "inspur,on5263m5-bmc", "aspeed,ast2500";
13 stdout-path = &uart5;
21 reserved-memory {
22 #address-cells = <1>;
23 #size-cells = <1>;
27 no-map;
[all …]
H A Daspeed-bmc-portwell-neptune.dts1 // SPDX-License-Identifier: GPL-2.0
3 /dts-v1/;
5 #include "aspeed-g5.dtsi"
6 #include <dt-bindings/gpio/aspeed-gpio.h>
10 compatible = "portwell,neptune-bmc", "aspeed,ast2500";
16 stdout-path = &uart5;
25 compatible = "gpio-leds";
29 default-state = "on";
34 linux,default-trigger = "heartbeat";
40 // postcode3-7 are GPIOH3-H7
[all …]
/linux/drivers/scsi/
H A Desp_scsi.h1 /* SPDX-License-Identifier: GPL-2.0 */
40 /* ESP config reg 1, read-write, found on all ESP chips */
48 /* ESP config reg 2, read-write, found only on esp100a+esp200+esp236 chips */
52 #define ESP_CONFIG2_SCSI2ENAB 0x08 /* Enable SCSI-2 features (tgtmode) */
55 #define ESP_CONFIG2_BCM 0x20 /* Enable byte-ctrl (236) */
58 #define ESP_CONFIG2_SPL 0x40 /* Enable status-phase latch (236) */
63 /* ESP config register 3 read-write, found only esp236+fas236+fas100a+hme chips */
64 #define ESP_CONFIG3_FCLOCK 0x01 /* FAST SCSI clock rate (esp100a/hme) */
65 #define ESP_CONFIG3_TEM 0x01 /* Enable thresh-8 mode (esp/fas236) */
66 #define ESP_CONFIG3_FAST 0x02 /* Enable FAST SCSI (esp100a/hme) */
[all …]
/linux/Documentation/filesystems/
H A Daffs.rst1 .. SPDX-License-Identifier: GPL-2.0
13 Supported read/write.
15 DOS\1 The original Fast File System. Supported read/write.
19 in file names are case-insensitive, as they ought to be.
20 Supported read/write.
22 DOS\3 The "international" Fast File System. Supported read/write.
27 sense on hard disks. Supported read only.
29 DOS\5 The Fast File System with directory cache. Supported read only.
107 Amiga -> Linux:
111 - R maps to r for user, group and others. On directories, R implies x.
[all …]
/linux/Documentation/arch/arm/nwfpe/
H A Dnetwinder-fpe.rst14 {P|M|Z} = {round to +infinity,round to -infinity,round to zero},
20 ------------------------------------------------------------
22 LDF/STF - load and store floating
30 LFM/SFM - load and store multiple floating
47 ----------------------------------------------------------------
49 Conversions, read/write status/control register instructions
54 RFS{cond} Rd Read floating point status register
56 RFC{cond} Rd Read floating point control register
76 ---------------------------------------------------
80 ADF{cond}<S|D|E>{P,M,Z} Fd, Fn, <Fm,#value> - add
[all …]
/linux/drivers/i2c/busses/
H A Di2c-designware-master.c1 // SPDX-License-Identifier: GPL-2.0-or-later
28 #include "i2c-designware-core.h"
37 regmap_write(dev->map, DW_IC_TX_TL, dev->tx_fifo_depth / 2); in i2c_dw_configure_fifo_master()
38 regmap_write(dev->map, DW_IC_RX_TL, 0); in i2c_dw_configure_fifo_master()
41 regmap_write(dev->map, DW_IC_CON, dev->master_cfg); in i2c_dw_configure_fifo_master()
48 struct i2c_timings *t = &dev->timings; in i2c_dw_set_timings_master()
57 ret = regmap_read(dev->map, DW_IC_COMP_PARAM_1, &comp_param1); in i2c_dw_set_timings_master()
62 /* Set standard and fast speed dividers for high/low periods */ in i2c_dw_set_timings_master()
63 sda_falling_time = t->sda_fall_ns ?: 300; /* ns */ in i2c_dw_set_timings_master()
64 scl_falling_time = t->scl_fall_ns ?: 300; /* ns */ in i2c_dw_set_timings_master()
[all …]
/linux/drivers/net/usb/
H A Ddm9601.c26 http://ptm2.cc.utu.fi/ftp/network/cards/DM9601/From_NET/DM9601-DS-P01-930914.pdf
68 err = -EINVAL; in dm_read()
85 err = -EINVAL; in dm_write()
115 mutex_lock(&dev->phy_mutex); in dm_read_shared_word()
134 netdev_err(dev->net, "%s read timed out!\n", phy ? "phy" : "eeprom"); in dm_read_shared_word()
135 ret = -EIO; in dm_read_shared_word()
142 netdev_dbg(dev->net, "read shared %d 0x%02x returned 0x%04x, %d\n", in dm_read_shared_word()
146 mutex_unlock(&dev->phy_mutex); in dm_read_shared_word()
154 mutex_lock(&dev->phy_mutex); in dm_write_shared_word()
177 netdev_err(dev->net, "%s write timed out!\n", phy ? "phy" : "eeprom"); in dm_write_shared_word()
[all …]
/linux/tools/testing/selftests/mm/
H A Dcow.c1 // SPDX-License-Identifier: GPL-2.0-only
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()
101 close(comm_pipes->child_ready[0]); in close_comm_pipes()
102 close(comm_pipes->child_ready[1]); in close_comm_pipes()
[all …]

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