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/Linux-v6.1/Documentation/devicetree/bindings/ipmi/
Dipmi-ipmb.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/ipmi/ipmi-ipmb.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: IPMI IPMB device bindings
9 description: IPMI IPMB device bindings
12 - Corey Minyard <cminyard@mvista.com>
17 - ipmi-ipmb
21 - const: "ipmi"
28 description: The address of the BMC on the IPMB bus. Defaults to 0x20.
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/Linux-v6.1/drivers/char/ipmi/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
3 # IPMI device configuration
7 tristate 'IPMI top-level message handler'
11 This enables the central IPMI message handler, required for IPMI
14 IPMI is a standard for managing sensors (temperature,
17 See <file:Documentation/driver-api/ipmi.rst> for more details on the driver.
33 When a panic occurs, this will cause the IPMI message handler to,
34 by default, generate an IPMI event describing the panic to each
44 When a panic occurs, this will cause the IPMI message handler to,
45 by default, generate IPMI OEM type f0 events holding the IPMB
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Dipmi_si_hotmod.c1 // SPDX-License-Identifier: GPL-2.0+
5 * Handling for dynamically adding/removing IPMI devices through
12 #include <linux/ipmi.h>
21 …"Add and remove interfaces. See Documentation/driver-api/ipmi.rst in the kernel sources for the g…
31 * ipmb=<ipmb addr>
67 return -EINVAL; in parse_str()
80 return -EINVAL; in parse_str()
91 return -EINVAL; in check_hotmod_int_op()
96 return -EINVAL; in check_hotmod_int_op()
110 h->iftype = IPMI_PLAT_IF_SI; in parse_hotmod_str()
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Dipmb_dev_int.c1 // SPDX-License-Identifier: GPL-2.0
4 * IPMB driver to receive a request and send a response
8 * This was inspired by Brendan Higgins' ipmi-bmc-bt-i2c driver.
34 #define IPMB_MSG_PAYLOAD_LEN_MAX (MAX_MSG_LEN - IPMB_REQUEST_LEN_MIN - 1)
71 return container_of(file->private_data, struct ipmb_dev, miscdev); in to_ipmb_dev()
84 spin_lock_irq(&ipmb_dev->lock); in ipmb_read()
86 while (list_empty(&ipmb_dev->request_queue)) { in ipmb_read()
87 spin_unlock_irq(&ipmb_dev->lock); in ipmb_read()
89 if (file->f_flags & O_NONBLOCK) in ipmb_read()
90 return -EAGAIN; in ipmb_read()
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Dipmi_ipmb.c1 // SPDX-License-Identifier: GPL-2.0
4 * Driver to talk to a remote management controller on IPMB.
22 #define DEVICE_NAME "ipmi-ipmb"
74 u8 *msg = iidev->rcvmsg; in valid_ipmb()
77 if (iidev->overrun) in valid_ipmb()
81 if (iidev->rcvlen < 7) in valid_ipmb()
88 if (iidev->rcvlen < 8) in valid_ipmb()
94 if (ipmb_checksum(msg + 3, iidev->rcvlen - 3) != 0) in valid_ipmb()
103 u8 *msg = iidev->rcvmsg; in ipmi_ipmb_check_msg_done()
107 if (iidev->rcvlen == 0) in ipmi_ipmb_check_msg_done()
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Dipmi_poweroff.c1 // SPDX-License-Identifier: GPL-2.0+
5 * MontaVista IPMI Poweroff extension to sys_reboot
15 #define pr_fmt(fmt) "IPMI poweroff: " fmt
24 #include <linux/ipmi.h>
31 * conveniently matches the IPMI chassis control values. */
35 /* the IPMI data command */
38 /* Which interface to use, -1 means the first we see. */
39 static int ifnum_to_use = -1;
66 "timer. Setting to -1 defaults to the first registered "
72 " Set to non-zero to enable power cycle instead of power"
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Dipmi_si_hardcode.c1 // SPDX-License-Identifier: GPL-2.0+
51 …fic IPMI register in bytes. This should generally be 1, 2, 4, or 8 for an 8-bit, 16-bit, 32-bit, o…
54 …e data read from the. IPMI register, in bits. For instance, if the data is read from a 32-bit wor…
57 …"Set the default IPMB slave address for the controller. Normally this is 0x20, but can be overrid…
73 t = match_string(si_to_str, -1, si_type_str); in ipmi_hardcode_init_one()
90 ipmi_platform_add("hardcode-ipmi-si", i, &p); in ipmi_hardcode_init_one()
129 ipmi_remove_platform_device_by_name("hardcode-ipmi-si"); in ipmi_si_hardcode_exit()
Dipmi_msghandler.c1 // SPDX-License-Identifier: GPL-2.0+
5 * Incoming and outgoing message routing for an IPMI interface.
14 #define pr_fmt(fmt) "IPMI message handler: " fmt
26 #include <linux/ipmi.h>
81 e = match_string(ipmi_panic_event_str, -1, strstrip(valcp)); in panic_op_write_handler()
106 …IPMI driver will attempt to store panic information in the event log in the event of a panic. Set…
111 /* Remain in auto-maintenance mode for this amount of time (in ms). */
152 "The most users that may use the IPMI stack at one time.");
169 * future, IPMI will add a way to know immediately if an event is in
199 /* Does this interface receive IPMI events? */
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Dipmi_si_intf.c1 // SPDX-License-Identifier: GPL-2.0+
5 * The interface to the IPMI driver for the system interfaces (KCS, SMIC,
40 #include <linux/ipmi.h>
65 /* FIXME - add watchdog stuff. */
68 /* Some BT-specific defines we need here. */
73 /* 'invalid' to allow a firmware-specified interface to be disabled */
112 /* Number of IPMI events received from the hardware. */
138 * IPMI
143 * Per-OEM handler, called from handle_flags(). Returns 1
144 * when handle_flags() needs to be re-run or 0 indicating it
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Dipmi_ssif.c1 // SPDX-License-Identifier: GPL-2.0+
5 * The interface to the IPMI driver for SMBus access to a SMBus
6 * compliant device. Called SSIF by the IPMI spec.
12 * non-blocking I2C interface, add support for multi-part
63 /* ssif_debug is a bit-field
64 * SSIF_DEBUG_MSG - commands and their responses
65 * SSIF_DEBUG_STATES - message states
66 * SSIF_DEBUG_TIMING - Measure times between events in the driver
100 /* FIXME - add watchdog stuff. */
103 #define SSIF_IDLE(ssif) ((ssif)->ssif_state == SSIF_NORMAL \
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/Linux-v6.1/Documentation/driver-api/
Dipmi.rst2 The Linux IPMI Driver
7 The Intelligent Platform Management Interface, or IPMI, is a
12 standardized database for field-replaceable units (FRUs) and a watchdog
15 To use this, you need an interface to an IPMI controller in your
17 management software that can use the IPMI system.
19 This document describes how to use the IPMI driver for Linux. If you
20 are not familiar with IPMI itself, see the web site at
21 https://www.intel.com/design/servers/ipmi/index.htm. IPMI is a big
25 -------------
27 The Linux IPMI driver is modular, which means you have to pick several
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Dipmb.rst2 IPMB Driver for a Satellite MC
5 The Intelligent Platform Management Bus or IPMB, is an
9 IPMB is also associated with the messaging protocol through the
10 IPMB bus.
12 The devices using the IPMB are usually management
15 hot-swapping disk drivers in the system chassis, etc...
17 When an IPMB is implemented in the system, the BMC serves as
18 a controller to give system software access to the IPMB. The BMC
19 sends IPMI requests to a device (usually a Satellite Management
20 Controller or Satellite MC) via IPMB and the device
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Dindex.rst10 .. class:: toc-title
17 driver-model/index
21 early-userspace/index
24 device-io
25 dma-buf
28 message-based
31 frame-buffer
42 ipmb
43 ipmi
61 s390-drivers
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/Linux-v6.1/include/uapi/linux/
Dipmi.h1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
3 * ipmi.h
5 * MontaVista IPMI interface
22 * This file describes an interface to an IPMI driver. You have to
23 * have a fairly good understanding of IPMI to use this, so go read
26 * With that said, this driver provides a multi-user interface to the
27 * IPMI driver, and it allows multiple IPMI physical interfaces below
32 * Multi-user means that multiple applications may use the driver,
53 in section 6.5 of the IPMI 1.5 manual. */
71 /* An IPMB Address. */
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/Linux-v6.1/include/linux/
Dipmi_smi.h1 /* SPDX-License-Identifier: GPL-2.0+ */
5 * MontaVista IPMI system management interface
21 #include <linux/ipmi.h>
26 * This files describes the interface for IPMI system management interface
27 * drivers to bind into the IPMI message handler.
30 /* Structure for the low-level drivers. */
48 * * IPMB (over a IPMB to another MC)
53 * +-----------+-----+------+
55 * +-----------+-----+------+
60 * +-----------+-----+------+------+
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Dipmi.h1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * ipmi.h
5 * MontaVista IPMI interface
17 #include <uapi/linux/ipmi.h>
27 * Opaque type for a IPMI message user. One of these is needed to
69 * Place-holder for the data, don't make any assumptions about
87 * the only IPMI routines that can be called are ipmi_request
95 * Called when the interface detects a watchdog pre-timeout. If
115 /* Create a new user of the IPMI layer on the given interface number. */
122 * Destroy the given user of the IPMI layer. Note that after this
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/Linux-v6.1/drivers/acpi/
Dacpi_ipmi.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * acpi_ipmi.c - ACPI IPMI opregion
12 #include <linux/ipmi.h>
16 MODULE_DESCRIPTION("ACPI IPMI Opregion driver");
22 /* the IPMI timeout is 5s */
30 /* the IPMI request message list */
37 int ipmi_ifnum; /* IPMI interface number */
50 * NOTE: IPMI System Interface Selection
51 * There is no system interface specified by the IPMI operation
53 * handle set. IPMI messages passed from the ACPI codes are sent
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/Linux-v6.1/Documentation/translations/zh_CN/driver-api/
Dindex.rst1 .. SPDX-License-Identifier: GPL-2.0
3 .. include:: ../disclaimer-zh_CN.rst
5 :Original: Documentation/driver-api/index.rst
20 .. class:: toc-title
32 * driver-model/index
36 * early-userspace/index
39 * device-io
40 * dma-buf
43 * message-based
46 * frame-buffer
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