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/linux/drivers/watchdog/
H A Dwdrtas.c1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * RTAS calls are available
8 * RTAS watchdog driver
11 * device driver to exploit watchdog RTAS functions
29 #include <asm/rtas.h>
36 MODULE_DESCRIPTION("RTAS watchdog driver");
62 * wdrtas_set_interval - sets the watchdog interval
67 * wdrtas_set_interval sets the watchdog keepalive interval by calling the
68 * RTAS function set-indicator (surveillance). The unit of interval is
77 /* rtas uses minutes */ in wdrtas_set_interval()
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H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
16 on-line as fast as possible after a lock-up. There's both a watchdog
21 <file:Documentation/watchdog/watchdog-api.rst> in the kernel source.
23 The watchdog is usually used together with the watchdog daemon
51 bool "Update boot-enabled watchdog until userspace takes over"
67 value set here can be overridden by the commandline parameter
77 bool "Enable watchdog hrtimer-based pretimeouts"
128 Use noop watchdog pretimeout governor by default. If noop
129 governor is selected by a user, write a short message to
136 Use panic watchdog pretimeout governor by default, if
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/linux/arch/powerpc/platforms/pseries/
H A Deeh_pseries.c1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * Actually, the pseries platform is built based on RTAS heavily. That means the
5 * pseries platform dependent EEH operations will be built on RTAS calls. The functions
33 #include <asm/ppc-pci.h>
34 #include <asm/rtas.h>
36 /* RTAS token
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H A Dio_event_irq.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright 2010 2011 Mark Nelson and Tseng-Hui (Frank) Lin, IBM Corporation
16 #include <asm/rtas.h>
23 * IO event interrupt is a mechanism provided by RTAS to return
24 * information about hardware error and non-error events. Device
30 * by one until the IO event is claimed by one of the handlers.
32 * event is handled by the event handler or NOTIFY_DONE if the
41 * if (! is_my_event(p->scope, p->event_type)) return NOTIFY_DONE;
66 * @elog: RTAS error/event log.
75 /* We should only ever get called for io-event interrupts, but if in ioei_find_event()
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H A Drtas-fadump.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Firmware-Assisted Dump support on POWERVM platform.
9 #define pr_fmt(fmt) "rtas fadump: " fmt
20 #include <asm/rtas.h>
23 #include <asm/fadump-internal.h>
25 #include "rtas-fadump.h"
33 fadump_conf->fadumphdr_addr = (fadump_conf->boot_mem_dest_addr + in rtas_fadump_update_config()
34 fadump_conf->boot_memory_size); in rtas_fadump_update_config()
48 fadump_conf->boot_memory_size = 0; in rtas_fadump_get_config()
49 fadump_conf->boot_mem_regs_cnt = 0; in rtas_fadump_get_config()
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H A Dsetup.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * 64-bit pSeries and RS/6000 setup code.
6 * Adapted from 'alpha' version by Gary Thomas
7 * Modified by Cort Dougan (cort@cs.nmt.edu)
8 * Modified by PPC64 Team, IBM Corp
49 #include <asm/rtas.h>
50 #include <asm/pci-bridge.h>
60 #include <asm/papr-sysparm.h>
61 #include <asm/ppc-pci.h>
70 #include <asm/isa-bridge.h>
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H A Drtas-fadump.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Firmware-Assisted Dump support on POWERVM platform.
37 * in the dump memory structure. Presently, three sections are used for
39 * can be used for boot memory regions.
55 /* ibm,configure-kernel-dump header. */
68 /* Maximum time allowed to prevent an automatic dump-reboot. */
74 * registering future kernel dump with power firmware through rtas call.
76 * In version 1, the platform permits one section header, dump-disk path
88 * The firmware-assisted dump format.
90 * The register save area is an area in the partition's memory used to preserve
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H A Dhotplug-cpu.c1 // SPDX-License-Identifier: GPL-2.0-or-later
6 * arch/powerpc/kernel/rtas.c, and arch/powerpc/platforms/pseries/smp.c
17 #define pr_fmt(fmt) "pseries-hotplug-cpu: " fmt
28 #include <asm/rtas.h>
44 * Record the CPU ids used on each nodes.
45 * Protected by cpu_add_remove_lock.
88 systemcfg->processorCount--; in pseries_cpu_disable()
111 * the cpu-offline. Here we wait for long enough to allow the cpu in question
112 * to self-destroy so that the cpu-offline thread can send the CPU_DEAD
115 * OTOH, pseries_cpu_offline_self() is called by the @cpu when it wants to
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H A Dreconfig.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * pSeries_reconfig.c - support for dynamic reconfiguration (including PCI
26 int err = -ENOMEM; in pSeries_reconfig_add_node()
32 np->full_name = kstrdup(kbasename(path), GFP_KERNEL); in pSeries_reconfig_add_node()
33 if (!np->full_name) in pSeries_reconfig_add_node()
36 np->properties = proplist; in pSeries_reconfig_add_node()
40 np->parent = pseries_of_derive_parent(path); in pSeries_reconfig_add_node()
41 if (IS_ERR(np->parent)) { in pSeries_reconfig_add_node()
42 err = PTR_ERR(np->parent); in pSeries_reconfig_add_node()
52 of_node_put(np->parent); in pSeries_reconfig_add_node()
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/linux/drivers/tty/hvc/
H A DKconfig1 # SPDX-License-Identifier: GPL-2.0
8 It will automatically be selected if one of the back-end console drivers
38 bool "IBM RTAS Console support"
42 IBM Console device driver which makes use of RTAS
51 This driver provides a Hypervisor console (HVC) back-end to access
76 This is meant to be used during HW bring up or debugging when
87 driver. This console is used through a JTAG only on ARM. If you don't have
110 bool "RISC-V SBI console support"
114 This enables support for console output via RISC-V SBI calls, which
115 is normally used only during boot to output printk. This driver
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/linux/arch/powerpc/mm/
H A Dnuma.c1 // SPDX-License-Identifier: GPL-2.0-or-later
63 [0 ... MAX_NUMNODES - 1] = { [0 ... MAX_NUMNODES - 1] = -1 }
65 static int numa_id_index_table[MAX_NUMNODES] = { [0 ... MAX_NUMNODES - 1] = NUMA_NO_NODE };
141 numa_cpu_lookup_table[cpu] = -1; in reset_numa_cpu_lookup_table()
175 int index = primary_domain_index - 1; in __associativity_to_nid()
188 * Returns nid in the range [0..nr_node_ids], or -1 if no useful NUMA
270 * or -1 if not found.
291 if (nid != -1) in of_node_to_nid()
314 int index = be32_to_cpu(distance_ref_points[i]) - 1; in __initialize_form1_numa_distance()
338 * Used to update distance information w.r.t newly added node.
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/linux/drivers/gpu/drm/imagination/
H A Dpvr_rogue_fwif_client.h1 /* SPDX-License-Identifier: GPL-2.0-only OR MIT */
15 * Page size used for Parameter Management.
27 * Minimum PB = Base Pages + (NUM_TE_PIPES-1)*16K + (NUM_VCE_PIPES-1)*64K +
30 * Maximum PB size must ensure that no PM address space can be fully used,
31 * because if the full address space was used it would wrap and corrupt itself.
40 * of 4GB minus the Minimum PB. For convenience we take the smaller power-of-2
46 * Flags supported by the geometry DM command i.e. &struct rogue_fwif_cmd_geom.
55 * Flags supported by the fragment DM command i.e. &struct rogue_fwif_cmd_frag.
74 * Flags supported by the compute DM command i.e. &struct rogue_fwif_cmd_compute.
82 * Flags supported by the transfer DM command i.e. &struct rogue_fwif_cmd_transfer.
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/linux/arch/powerpc/include/asm/
H A Dpaca.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
5 * There are some pointers defined that are utilized by PLIC.
21 #include <asm/exception-64e.h>
23 #include <asm/exception-64s.h>
34 #include <asm-generic/mmiowb_types.h>
49 #define get_slb_shadow() (get_paca()->slb_shadow_ptr)
58 * This structure is not directly accessed by firmware or the service
66 * read-only (after boot) fields in the first cacheline to
80 u16 lock_token; /* Constant 0x8000, used in locks */
84 u16 lock_token; /* Constant 0x8000, used in locks */
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H A Dprocessor.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
30 /* Default SMT priority is set to 3. Use 11- 13bits to save priority. */
46 * in favor of using the device-tree
47 * -- BenH.
50 /* PREP sub-platform types. Unused */
56 /* CHRP sub-platform types. These are arbitrary */
82 /* FP and VSX 0-31 register set */
113 * The following will contain addresses used by debug applications
145 void *pgdir; /* root of page-table tree */
147 unsigned long rtas_sp; /* stack pointer for when in RTAS */
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/linux/arch/powerpc/platforms/chrp/
H A Dsetup.c1 // SPDX-License-Identifier: GPL-2.0
4 * Adapted from 'alpha' version by Gary Thomas
5 * Modified by Cort Dougan (cort@cs.nmt.edu)
40 #include <asm/pci-bridge.h>
49 #include <asm/rtas.h>
62 /* Used for doing CHRP event-scans */
68 /* To be replaced by RTAS when available */
82 "Asynchronous", "Reserved", "Flow-Through Synchronous",
86 "Disabled", "Write-Through", "Copy-Back", "Transparent Mode"
253 * Per default, input/output-device points to the keyboard/screen
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/linux/drivers/pci/hotplug/
H A Drpaphp_slot.c1 // SPDX-License-Identifier: GPL-2.0+
19 #include <asm/rtas.h>
22 /* free up the memory used by a slot */
25 of_node_put(slot->dn); in dealloc_slot_struct()
26 kfree(slot->name); in dealloc_slot_struct()
38 slot->name = kstrdup(drc_name, GFP_KERNEL); in alloc_slot_struct()
39 if (!slot->name) in alloc_slot_struct()
41 slot->dn = of_node_get(dn); in alloc_slot_struct()
42 slot->index = drc_index; in alloc_slot_struct()
43 slot->power_domain = power_domain; in alloc_slot_struct()
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/linux/arch/powerpc/sysdev/xics/
H A Dxics-common.c1 // SPDX-License-Identifier: GPL-2.0-or-later
26 #include <asm/rtas.h>
60 ireg = of_get_property(np, "ibm,ppc-interrupt-gserver#s", &ilen); in xics_update_irq_servers()
69 * entry of "ibm,ppc-interrupt-gserver#s" property. Get the last in xics_update_irq_servers()
84 /* GIQ stuff, currently only supported on RTAS setups, will have
96 index = (1UL << xics_interrupt_server_size) - 1 - gserver; in xics_set_cpu_giq()
100 WARN(status < 0, "set-indicator(%d, %d, %u) returned %d\n", in xics_set_cpu_giq()
107 icp_ops->set_priority(LOWEST_PRIORITY); in xics_setup_cpu()
118 xics_ics->mask_unknown(xics_ics, vec); in xics_mask_unknown_vec()
134 BUG_ON(request_irq(ipi, icp_ops->ipi_action, in xics_request_ipi()
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H A Dicp-native.c1 // SPDX-License-Identifier: GPL-2.0-or-later
53 /* Handled an interrupt latched by KVM */ in icp_native_get_xirr()
58 return in_be32(&icp_native_regs[cpu]->xirr.word); in icp_native_get_xirr()
65 out_be32(&icp_native_regs[cpu]->xirr.word, value); in icp_native_set_xirr()
72 out_8(&icp_native_regs[cpu]->xirr.bytes[0], value); in icp_native_set_cppr()
77 out_8(&icp_native_regs[n_cpu]->qirr.bytes[0], value); in icp_native_set_qirr()
131 /* We don't have a linux mapping, so have rtas mask it. */ in icp_native_get_irq()
152 * Currently not used to send IPIs to another CPU in icp_native_cause_ipi_rm()
163 xics_phys = paca_ptrs[cpu]->kvm_hstate.xics_phys; in icp_native_cause_ipi_rm()
170 * Called when an interrupt is received on an off-line CPU to
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/linux/arch/powerpc/kexec/
H A Dcore_64.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 2004-2005, IBM Corp.
7 * Created by: Milton D Miller II
35 #include <asm/crashdump-ppc64.h>
51 for (i = 0; i < image->nr_segments; i++) in machine_kexec_prepare()
52 if (image->segment[i].mem < __pa(_end)) in machine_kexec_prepare()
53 return -ETXTBSY; in machine_kexec_prepare()
57 basep = of_get_property(node, "linux,tce-base", NULL); in machine_kexec_prepare()
58 sizep = of_get_property(node, "linux,tce-size", NULL); in machine_kexec_prepare()
65 for (i = 0; i < image->nr_segments; i++) { in machine_kexec_prepare()
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/linux/arch/powerpc/kernel/
H A Dlegacy_serial.c1 // SPDX-License-Identifier: GPL-2.0
16 #include <asm/pci-bridge.h>
17 #include <asm/ppc-pci.h>
43 {.type = "tsi-bridge",},
46 {.compatible = "simple-bus",},
47 {.compatible = "wrs,epld-localbus",},
52 static int legacy_serial_console = -1;
60 offset = offset << p->regshift; in tsi_serial_in()
62 tmp = readl(p->membase + (UART_IIR & ~3)); in tsi_serial_in()
65 return readb(p->membase + offset); in tsi_serial_in()
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H A Dhead_64.S1 /* SPDX-License-Identifier: GPL-2.0-or-later */
4 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
6 * Rewritten by Cort Dougan (cort@cs.nmt.edu) for PReP
8 * Adapted for Power Macintosh by Paul Mackerras.
9 * Low-level exception handlers and MMU support
10 * rewritten by Paul Mackerras.
13 * Adapted for 64bit PowerPC by Dave Engebretsen, Peter Bergner, and
16 * This file contains the entry point for the 64-bit kernel along
17 * with some early initialization code common to all 64-bit powerpc
28 #include <asm/head-64.h>
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H A Deeh.c1 // SPDX-License-Identifier: GPL-2.0-or-later
6 * Copyright 2001-2012 IBM Corporation.
32 #include <asm/ppc-pci.h>
33 #include <asm/rtas.h>
34 #include <asm/pte-walk.h>
40 * usual PCI framework, except by check-stopping the CPU. Systems
41 * that are designed for high-availability/reliability cannot afford
43 * An EEH-capable bridge operates by converting a detected error
44 * into a "slot freeze", taking the PCI adapter off-line, making
47 * ignored. EEH slot isolation events can be triggered by parity
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H A Dhead_book3s_32.S1 /* SPDX-License-Identifier: GPL-2.0-or-later */
4 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
6 * Rewritten by Cort Dougan (cort@cs.nmt.edu) for PReP
8 * Adapted for Power Macintosh by Paul Mackerras.
9 * Low-level exception handlers and MMU support
10 * rewritten by Paul Mackerras.
14 * This file contains the low-level support and setup for the
30 #include <asm/asm-offsets.h>
34 #include <asm/feature-fixups.h>
40 /* see the comment for clear_bats() -- Cort */ \
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H A Deeh_driver.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * PCI Error Recovery Driver for RPA-compliant PPC64 platform.
17 #include <asm/ppc-pci.h>
18 #include <asm/pci-bridge.h>
19 #include <asm/rtas.h>
78 return !edev || (edev->mode & EEH_DEV_REMOVED); in eeh_dev_removed()
83 if (!edev->pdev) in eeh_edev_actionable()
85 if (edev->pdev->error_state == pci_channel_io_perm_failure) in eeh_edev_actionable()
89 if (eeh_pe_passed(edev->pe)) in eeh_edev_actionable()
96 * eeh_pcid_get - Get the PCI device driver
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/linux/Documentation/arch/powerpc/
H A Dfirmware-assisted-dump.rst2 Firmware-Assisted Dump
7 The goal of firmware-assisted dump is to enable the dump of
8 a crashed system, and to do so from a fully-reset system, and
12 - Firmware-Assisted Dump (FADump) infrastructure is intended to replace
14 - Fadump uses the same firmware interfaces and memory reservation model
16 - Unlike phyp dump, FADump exports the memory dump through /proc/vmcore
19 - Unlike phyp dump, userspace tool does not need to refer any sysfs
21 - Unlike phyp dump, FADump allows user to release all the memory reserved
23 - Once enabled through kernel boot parameter, FADump can be
28 Comparing with kdump or other strategies, firmware-assisted
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