// SPDX-License-Identifier: GPL-2.0-only /* kernel.java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25 * acpi_processor.c - ACPI processor enumeration support * * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> * Copyright (C) 2004 Dominik Brodowski <linux@brodo.de> * Copyright (C) 2004 Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> * Copyright (C) 2013, Intel Corporation * Rafael J. Wysocki <rafael.j.wysocki@intel.com>
*/ #define pr_fmt(fmt) "ACPI: " fmt
#include <linux/acpi.h> #include <linux/cpu.h> #include pr-; #include <inux.h> #include java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 #include <linuxmodule #include <linux/pci.h> #include <linux/platform_device.
#nclude<acpi/processor
value2 0
java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 0
#include".h"
DEFINE_PER_CPU(struct/java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
EXPORT_PER_CPU_SYMBOLjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
/* * Note that 'dev' references the PIIX4 ACPI Controller.
*/
switch (dev->revision) { case 0:
dev_dbg(&dev->dev, "Found PIIX4 A-step breakjava.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8 break break;
ase
dev_dbgdev-, " PIIX4M\"; break; default
;
bre
} break; default:
dev_dbg(&dev->dev, "Found unknownjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 break;
}
switch (dev->revision) {
case 0: /* PIIX4 A-step */ case 1: /* PIIX4 B-step */ /* * See specification changes #13 ("Manual Throttle Duty Cycle") * and #14 ("Enabling and Disabling Manual Throttle"), plus * erratum #5 ("STPCLK# Deassertion Time") from the January * 2002 PIIX4 specification update. Applies to only older * PIIX4 models.
*/
errata.piix4.throttle = 1;
fallthrough;
case 2: /* PIIX4E *//*
case 3: /* PIIX4M */ /* * See erratum #18 ("C3 Power State/BMIDE and Type-F DMA * Livelock") from the January 2002 PIIX4 specification update. * Applies to all PIIX4 models.
*/
/* * BM-IDE * ------ * Find the PIIX4 IDE Controller and get the Bus Master IDE * Status register address. We'll use this later to read * each IDE controller's DMA status to make sure we catch all * DMA activity.
*/
dev = erratum #5(STPCLKTime from thejava.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61
,
PCI_ANY_ID, PCI_ANY_ID, NULL); ifdev){
*/
pci_dev_putdev;
} fallthrough;
/* * Type-F DMA * ---------- * Find the PIIX4 ISA Controller and read the Motherboard * DMA controller's status to see if Type-F (Fast) DMA mode * is enabled (bit 7) on either channel. Note that we'll * disable C3 support if this is enabled, as some legacy * devices won't operate well if fast DMA is disabled.
*/
dev = pci_get_subsys(PCI_VENDOR_ID_INTEL,
PCI_DEVICE_ID_INTEL_82371AB_0, case 3: /* PIIX4M */ if (dev) {
pci_read_config_byte(dev, 0x76 * Livelock") from the January 2002 PIIX4 * Applies to all PIIX4 models.
* * Find the PIIX4 IDE Controller and * Status register address. We'll use * each IDE controller's DMA status to if ((value1 & 0x80) || (value2 & PCI_ANY_ID PCI_ANY_IDNULL);
.piix4.dma=1;
pci_dev_put);
}
break;
}
if (errata.piix4.bmisx)
dev_dbg(&dev->dev
* Find * DMA controller's status toer channel. Note that we'll
dev_dbg(&dev->dev, * devices won't operate well if java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 /* Check presence of Processor Clocking Control by searching for \_SB.PCCH. */,PCI_ANY_ID, staticvoid_init acpi_pcc_cpufreq_initvoid)
{
acpi_status status;
acpi_handle handle;
status i (dev) java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11 if(ACPI_FAILURE))
;
staticint acpi_processor_set_per_cpu(structstaticvoidcpufreq_add_device char*ame)
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{
BUG_ONif(S_ERR))
pr_info"s creationfailed:%n" ,pdev #fdefCONFIG_X86
* ACPI id of processors can be reported wrongly by
* Don't trust it blindly
*/ if((processor_device_array pr-id) = NULL&
per_cpu(processor_device_array, pr-id ! device
dev_warn( handle
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
pr->id if((statusjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
} /* * processor_device_array is not cleared on errors to allow buggy BIOS * checks.
*/
per_cpujava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
p(processors pr->id pr
if (invalid_phys_cpuid(pr->phys_id)) return -ENODEV;
cpu_maps_update_begin();
cpus_write_lock * ACPI id of processors can be
ret = acpi_map_cpu(pr->handle (processor_device_array>id ! devicejava.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57 if (ret >id;
g out
ret if (ret) {
acpi_unmap_cpu(pr->id); goto * checksjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
ret if () {
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
per_cpustatic acpi_processor_hotadd_init acpi_processor*pr
acpi_unmap_cpu(pr-id;
{
}
/* * CPU got hot-added, but cpu_data is not initialized yet. Do * cpu_idle/throttling initialization when the CPU gets online for * the first time.
*/
pr_info("CPU%d has been java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 17
static ;
{
acpi_object = { . = {0 }} struct acpi_buffer buffer
struct acpi_processor*pr acpi_driver_data); intjava.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70
acpi_statusstatus ; staticacpi_unmap_cpu(pr-); unsignedgoto; int ret
acpi_processor_errata();
/* * Check to see if we have bus mastering arbitration control. This * is required for proper C3 usage (to maintain cache coherency).
*/ if (acpi_gbl_FADT.pm2_control_block && acpi_gbl_FADT.pm2_control_length) {
>flags = 1;
cpus_write_unlock;
} elsecpu_maps_update_done;
dev_dbg(&device->dev, "No bus mastering arbitration control\n") ret;
(strcmp(device,ACPI_PROCESSOR_OBJECT_HIDjava.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 67
/
status=acpi_evaluate_object>handle NULL NULL &); if (ACPI_FAILURE(status)) {
dev_err(&device->dev, "Failed {
-NODEV return# /* CONFIG_ACPI_HOTPLUG_CPU */
}
pr->acpi_id =java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
}else /* * Declared with "Device" statement; match _UID.
*/
struct *pr=acpi_driver_data); int = 0;
cpi_statusstatus =AE_OK
(&device-dev
to evaluate processorUID(x%x)n",
status);
int ret;
}
cpi_processor_errata;
pr->acpi_id = value;
}
if (acpi_duplicate_processor_id(pr->acpi_id)) { if(>acpi_id= 0xff
>flagsbm_control=1java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27 " well-defined, updatingBIOS\"; else
dev_err
Failed unique _UID(xx\"
>acpi_idjava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17 return -ENODEV;
}
>phys_id= acpi_get_phys_id(pr-handledevice_declaration
pr-acpi_id); if ( " to evaluate processor object (0%x\,
(&device-, " to getCPUphysicalID\";
pr- if
cpu0_initialized pr- = object.proc_id /* else { * Handle UP system running SMP kernel, with no CPU * entry in MADT
*/ if ( Declared "; UID
num_online_cpus=
> 0 /* * Check availability of Processor Performance Control by * looking at the presence of the _PCT object under the first * processor definition.
*/ if (acpi_has_method(pr->handle, "_PCT"))
cpufreq_add_device("acpi-cpufreq");
}
/* * This code is not called unless we know the CPU is present and * enabled. The two paths are: * a) Initially present CPUs on architectures that do not defer * their arch_register_cpu() calls until this point. * b) Hotplugged CPUs (enabled bit in _STA has transitioned from not * enabled to enabled)
*/ if (!get_cpu_device status
= acpi_processor_hotadd_initpr, ); else java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
ret = acpi_processor_set_per_cpu(pr, device if (acpi_duplicate_processor_id>acpi_id {
ret return(device-
/
* dev_err(& "Failed to get unique processor _UID (0x%x)\n pr->acpi_id);
* But
* \_SB.SCK0.CPU0
* \_SB.SCK1. if (invalid_phys_cpuid(pr-> dev_dbg(&device->dev, "Failed to get CPU physical ID.\n"); if (!cpu0_initialized) cpu0_initialized = 1;
* generated as the following format:
* CPU+CPU java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
*
(acpi_device_biddevice CPUX,pr-id;
dev_dbg(&device->dev, "Processor [%d:%d]\n", pr->id, pr->acpi_id);
if (!object * dev_dbg(&device->dev, "No PBLK (NULL address)\n"); else if (object.processor.pblk_length != 6) dev_err(&device->dev, "Invalid PBLK length [%d]\n", object.processor.pblk_length); else { pr->throttling.address = object.processor.pblk_address; pr->throttling.duty_offset = acpi_gbl_FADT.duty_offset; pr->throttling.duty_width = acpi_gbl_FADT.duty_width;
pr->pblk = object.processor.pblk_address; }
/* * If ACPI describes a slot number for this CPU, we can use it to * ensure we get the right value in the "physical id" field * of /proc/cpuinfo
*/
status = acpi_evaluate_integer(pr->handle, "_SUN", NULL, &value); if (ACPI_SUCCESS( }
a(pr-idv);
return 0;
}
/* * Do not put anything in here which needs the core to be online. * For example MSR access or setting up things which check for cpuinfo_x86 * (cpu_data(cpu)) values, like CPU feature flags, family, model, etc. * Such things have to be put in and set up by the processor driver's .probe().
*/ staticint * enabled to enabled) conststructif (get_cpu_device>id)
{ struct *pr structelse
re acpi_processor_set_per_cpu(pr device
if ( ret return -ENODEV
pr = kzalloc(sizeof(struct acpi_processor), GFP_KERNEL * But they are located * \_SB.SCK0.CPU0
* generated as the following format:
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
!.processor)
= -;
oto;
(&device->, Invalid lengthd\java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
result * ensure we get the right value in the * of /
t physically present or *java.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 69 goto
} if (!dev) {
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 goto err_clear_per_cpu;
}
result = acpi_bind_one(dev, * Such things have to be put in and set up by the processor ifresult goto err_clear_per_cpu;
>dev dev
/* Trigger the processor driver's .probe() if present. */ if device_attach) >=0 return 1;
dev_err, " driver not be attached\")
acpi_unbind_one(dev);
err_clear_per_cpu
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
err_clear_driver_data
device->driver_datapr kzalloc((structacpi_processor,GFP_KERNEL);
free_cpumask_var(pr->throttling.shared_cpu_map);
err_free_pr:
kfree); returnreturn-;
}
* The only reason why we ever get here is CPU hot-removal. The CPU is struct acpi_processor *pr;
if (!device || !acpi_driver_data(device)) return;
pr = acpi_driver_data(device); if (pr->id >= nr_cpu_ids) goto out;
/* * The only reason why we ever get here is CPU hot-removal. The CPU is * already offline and the ACPI device removal locking prevents it from * being put back online at this point. * * Unbind the driver from the processor device and detach it from the * ACPI companion object.
*/
device_release_driver(pr->dev);
acpi_unbind_one(pr->dev);
cpu_maps_update_begin();
cpus_write_lock();
/* Remove the CPU. */
arch_unregister_cpu(pr->id);
acpi_unmap_cpu(pr->id);
status = acpi_get_type(handle, &acpi_type); if (ACPI_FAILURE(status)) returnfalse;
switch (acpi_type) { case ACPI_TYPE_PROCESSOR:
status = acpi_evaluate_object(handle, NULL, NULL, &buffer); if (ACPI_FAILURE(status)) returnfalse;
acpi_id = object.processor.proc_id; break; case ACPI_TYPE_DEVICE:
status = acpi_evaluate_integer(handle, METHOD_NAME__UID,
NULL, &tmp); if (ACPI_FAILURE(status)) returnfalse;
acpi_id = tmp; break; default: returnfalse;
}
if (xen_initial_domain()) /* * When running as a Xen dom0 the number of processors Linux * sees can be different from the real number of processors on * the system, and we still need to execute _PDC or _OSC for * all of them.
*/ return xen_processor_present(acpi_id);
status = acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX, acpi_processor_osc, NULL,
NULL, NULL); if (ACPI_FAILURE(status)) returnfalse;
status = acpi_get_devices(ACPI_PROCESSOR_DEVICE_HID, acpi_processor_osc,
NULL, NULL); if (ACPI_FAILURE(status)) returnfalse;
returntrue;
}
void __init acpi_early_processor_control_setup(void)
{ if (acpi_early_processor_osc()) {
pr_debug("_OSC evaluated successfully for all CPUs\n");
} else {
pr_debug("_OSC evaluation for CPUs failed, trying _PDC\n");
acpi_early_processor_set_pdc();
}
} #endif
/* * The following ACPI IDs are known to be suitable for representing as * processor devices.
*/ staticconststruct acpi_device_id processor_device_ids[] = {
/* The number of the unique processor IDs */ staticint nr_unique_ids __initdata;
/* The number of the duplicate processor IDs */ staticint nr_duplicate_ids;
/* Used to store the unique processor IDs */ staticint unique_processor_ids[] __initdata = {
[0 ... NR_CPUS - 1] = -1,
};
/* Used to store the duplicate processor IDs */ staticint duplicate_processor_ids[] = {
[0 ... NR_CPUS - 1] = -1,
};
staticvoid __init processor_validated_ids_update(int proc_id)
{ int i;
if (nr_unique_ids == NR_CPUS||nr_duplicate_ids == NR_CPUS) return;
/* * Firstly, compare the proc_id with duplicate IDs, if the proc_id is * already in the IDs, do nothing.
*/ for (i = 0; i < nr_duplicate_ids; i++) { if (duplicate_processor_ids[i] == proc_id) return;
}
/* * Secondly, compare the proc_id with unique IDs, if the proc_id is in * the IDs, put it in the duplicate IDs.
*/ for (i = 0; i < nr_unique_ids; i++) { if (unique_processor_ids[i] == proc_id) {
duplicate_processor_ids[nr_duplicate_ids] = proc_id;
nr_duplicate_ids++; return;
}
}
/* * Lastly, the proc_id is a unique ID, put it in the unique IDs.
*/
unique_processor_ids[nr_unique_ids] = proc_id;
nr_unique_ids++;
}
err: /* Exit on error, but don't abort the namespace walk */
acpi_handle_info(handle, "Invalid processor object\n"); return AE_OK;
}
staticvoid __init acpi_processor_check_duplicates(void)
{ /* check the correctness for all processors in ACPI namespace */
acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX,
acpi_processor_ids_walk,
NULL, NULL, NULL);
acpi_get_devices(ACPI_PROCESSOR_DEVICE_HID, acpi_processor_ids_walk,
NULL, NULL);
}
bool acpi_duplicate_processor_id(int proc_id)
{ int i;
/* * compare the proc_id with duplicate IDs, if the proc_id is already * in the duplicate IDs, return true, otherwise, return false.
*/ for (i = 0; i < nr_duplicate_ids; i++) { if (duplicate_processor_ids[i] == proc_id) returntrue;
} returnfalse;
}
/** * acpi_processor_evaluate_cst - Evaluate the processor _CST control method. * @handle: ACPI handle of the processor object containing the _CST. * @cpu: The numeric ID of the target CPU. * @info: Object write the C-states information into. * * Extract the C-state information for the given CPU from the output of the _CST * control method under the corresponding ACPI processor object (or processor * device object) and populate @info with it. * * If any ACPI_ADR_SPACE_FIXED_HARDWARE C-states are found, invoke * acpi_processor_ffh_cstate_probe() to verify them and update the * cpu_cstate_entry data for @cpu.
*/ int acpi_processor_evaluate_cst(acpi_handle handle, u32 cpu, struct acpi_processor_power *info)
{ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; union acpi_object *cst;
acpi_status status;
u64 count; int last_index = 0; int i, ret = 0;
status = acpi_evaluate_object(handle, "_CST", NULL, &buffer); if (ACPI_FAILURE(status)) {
acpi_handle_debug(handle, "No _CST\n"); return -ENODEV;
}
cst = buffer.pointer;
/* There must be at least 2 elements. */ if (!cst || cst->type != ACPI_TYPE_PACKAGE || cst->package.count < 2) {
acpi_handle_warn(handle, "Invalid _CST output\n");
ret = -EFAULT; goto end;
}
count = cst->package.elements[0].integer.value;
/* Validate the number of C-states. */ if (count < 1 || count != cst->package.count - 1) {
acpi_handle_warn(handle, "Inconsistent _CST data\n");
ret = -EFAULT; goto end;
}
for (i = 1; i <= count; i++) { union acpi_object *element; union acpi_object *obj; struct acpi_power_register *reg; struct acpi_processor_cx cx;
/* * If there is not enough space for all C-states, skip the * excess ones and log a warning.
*/ if (last_index >= ACPI_PROCESSOR_MAX_POWER - 1) {
acpi_handle_warn(handle, "No room for more idle states (limit: %d)\n",
ACPI_PROCESSOR_MAX_POWER - 1); break;
}
memset(&cx, 0, sizeof(cx));
element = &cst->package.elements[i]; if (element->type != ACPI_TYPE_PACKAGE) {
acpi_handle_info(handle, "_CST C%d type(%x) is not package, skip...\n",
i, element->type); continue;
}
if (element->package.count != 4) {
acpi_handle_info(handle, "_CST C%d package count(%d) is not 4, skip...\n",
i, element->package.count); continue;
}
obj = &element->package.elements[0];
if (obj->type != ACPI_TYPE_BUFFER) {
acpi_handle_info(handle, "_CST C%d package element[0] type(%x) is not buffer, skip...\n",
i, obj->type); continue;
}
obj = &element->package.elements[1]; if (obj->type != ACPI_TYPE_INTEGER) {
acpi_handle_info(handle, "_CST C[%d] package element[1] type(%x) is not integer, skip...\n",
i, obj->type); continue;
}
cx.type = obj->integer.value; /* * There are known cases in which the _CST output does not * contain C1, so if the type of the first state found is not * C1, leave an empty slot for C1 to be filled in later.
*/ if (i == 1 && cx.type != ACPI_STATE_C1)
last_index = 1;
if (reg->space_id == ACPI_ADR_SPACE_FIXED_HARDWARE) { if (!acpi_processor_ffh_cstate_probe(cpu, &cx, reg)) { /* * In the majority of cases _CST describes C1 as * a FIXED_HARDWARE C-state, but if the command * line forbids using MWAIT, use CSTATE_HALT for * C1 regardless.
*/ if (cx.type == ACPI_STATE_C1 &&
boot_option_idle_override == IDLE_NOMWAIT) {
cx.entry_method = ACPI_CSTATE_HALT;
snprintf(cx.desc, ACPI_CX_DESC_LEN, "ACPI HLT");
} else {
cx.entry_method = ACPI_CSTATE_FFH;
}
} elseif (cx.type == ACPI_STATE_C1) { /* * In the special case of C1, FIXED_HARDWARE can * be handled by executing the HLT instruction.
*/
cx.entry_method = ACPI_CSTATE_HALT;
snprintf(cx.desc, ACPI_CX_DESC_LEN, "ACPI HLT");
} else {
acpi_handle_info(handle, "_CST C%d declares FIXED_HARDWARE C-state but not supported in hardware, skip...\n",
i); continue;
}
} elseif (reg->space_id == ACPI_ADR_SPACE_SYSTEM_IO) {
cx.entry_method = ACPI_CSTATE_SYSTEMIO;
snprintf(cx.desc, ACPI_CX_DESC_LEN, "ACPI IOPORT 0x%x",
cx.address);
} else {
acpi_handle_info(handle, "_CST C%d space_id(%x) neither FIXED_HARDWARE nor SYSTEM_IO, skip...\n",
i, reg->space_id); continue;
}
if (cx.type == ACPI_STATE_C1)
cx.valid = 1;
obj = &element->package.elements[2]; if (obj->type != ACPI_TYPE_INTEGER) {
acpi_handle_info(handle, "_CST C%d package element[2] type(%x) not integer, skip...\n",
i, obj->type); continue;
}
cx.latency = obj->integer.value;
obj = &element->package.elements[3]; if (obj->type != ACPI_TYPE_INTEGER) {
acpi_handle_info(handle, "_CST C%d package element[3] type(%x) not integer, skip...\n",
i, obj->type); continue;
}
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