^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * acpi_osl.c - OS-dependent functions ($Revision: 83 $)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2000 Andrew Henroid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright (c) 2008 Intel Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Author: Matthew Wilcox <willy@linux.intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/highmem.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/lockdep.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/pci.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/kmod.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/workqueue.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/nmi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/acpi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/efi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/ioport.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/jiffies.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/semaphore.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/security.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <linux/io-64-nonatomic-lo-hi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include "acpica/accommon.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include "acpica/acnamesp.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include "internal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define _COMPONENT ACPI_OS_SERVICES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) ACPI_MODULE_NAME("osl");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) struct acpi_os_dpc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) acpi_osd_exec_callback function;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) void *context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) struct work_struct work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #ifdef ENABLE_DEBUGGER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #include <linux/kdb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) /* stuff for debugger support */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) int acpi_in_debugger;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) EXPORT_SYMBOL(acpi_in_debugger);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #endif /*ENABLE_DEBUGGER */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) static int (*__acpi_os_prepare_sleep)(u8 sleep_state, u32 pm1a_ctrl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) u32 pm1b_ctrl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static int (*__acpi_os_prepare_extended_sleep)(u8 sleep_state, u32 val_a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) u32 val_b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) static acpi_osd_handler acpi_irq_handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) static void *acpi_irq_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static struct workqueue_struct *kacpid_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static struct workqueue_struct *kacpi_notify_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static struct workqueue_struct *kacpi_hotplug_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) static bool acpi_os_initialized;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) unsigned int acpi_sci_irq = INVALID_ACPI_IRQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) bool acpi_permanent_mmap = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * This list of permanent mappings is for memory that may be accessed from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * interrupt context, where we can't do the ioremap().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) struct acpi_ioremap {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) void __iomem *virt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) acpi_physical_address phys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) acpi_size size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) unsigned long refcount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) struct rcu_work rwork;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) } track;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) static LIST_HEAD(acpi_ioremaps);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) static DEFINE_MUTEX(acpi_ioremap_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #define acpi_ioremap_lock_held() lock_is_held(&acpi_ioremap_lock.dep_map)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) static void __init acpi_request_region (struct acpi_generic_address *gas,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) unsigned int length, char *desc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) u64 addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) /* Handle possible alignment issues */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) memcpy(&addr, &gas->address, sizeof(addr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) if (!addr || !length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) /* Resources are never freed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (gas->space_id == ACPI_ADR_SPACE_SYSTEM_IO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) request_region(addr, length, desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) else if (gas->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) request_mem_region(addr, length, desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) static int __init acpi_reserve_resources(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) acpi_request_region(&acpi_gbl_FADT.xpm1a_event_block, acpi_gbl_FADT.pm1_event_length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) "ACPI PM1a_EVT_BLK");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) acpi_request_region(&acpi_gbl_FADT.xpm1b_event_block, acpi_gbl_FADT.pm1_event_length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) "ACPI PM1b_EVT_BLK");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) acpi_request_region(&acpi_gbl_FADT.xpm1a_control_block, acpi_gbl_FADT.pm1_control_length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) "ACPI PM1a_CNT_BLK");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) acpi_request_region(&acpi_gbl_FADT.xpm1b_control_block, acpi_gbl_FADT.pm1_control_length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) "ACPI PM1b_CNT_BLK");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) if (acpi_gbl_FADT.pm_timer_length == 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) acpi_request_region(&acpi_gbl_FADT.xpm_timer_block, 4, "ACPI PM_TMR");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) acpi_request_region(&acpi_gbl_FADT.xpm2_control_block, acpi_gbl_FADT.pm2_control_length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) "ACPI PM2_CNT_BLK");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) /* Length of GPE blocks must be a non-negative multiple of 2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (!(acpi_gbl_FADT.gpe0_block_length & 0x1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) acpi_request_region(&acpi_gbl_FADT.xgpe0_block,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) acpi_gbl_FADT.gpe0_block_length, "ACPI GPE0_BLK");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if (!(acpi_gbl_FADT.gpe1_block_length & 0x1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) acpi_request_region(&acpi_gbl_FADT.xgpe1_block,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) acpi_gbl_FADT.gpe1_block_length, "ACPI GPE1_BLK");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) fs_initcall_sync(acpi_reserve_resources);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) void acpi_os_printf(const char *fmt, ...)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) va_list args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) va_start(args, fmt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) acpi_os_vprintf(fmt, args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) va_end(args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) EXPORT_SYMBOL(acpi_os_printf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) void acpi_os_vprintf(const char *fmt, va_list args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) static char buffer[512];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) vsprintf(buffer, fmt, args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) #ifdef ENABLE_DEBUGGER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) if (acpi_in_debugger) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) kdb_printf("%s", buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) if (printk_get_level(buffer))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) printk("%s", buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) printk(KERN_CONT "%s", buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) if (acpi_debugger_write_log(buffer) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) if (printk_get_level(buffer))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) printk("%s", buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) printk(KERN_CONT "%s", buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) #ifdef CONFIG_KEXEC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) static unsigned long acpi_rsdp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) static int __init setup_acpi_rsdp(char *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) return kstrtoul(arg, 16, &acpi_rsdp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) early_param("acpi_rsdp", setup_acpi_rsdp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) acpi_physical_address __init acpi_os_get_root_pointer(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) acpi_physical_address pa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) #ifdef CONFIG_KEXEC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) * We may have been provided with an RSDP on the command line,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) * but if a malicious user has done so they may be pointing us
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) * at modified ACPI tables that could alter kernel behaviour -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) * so, we check the lockdown status before making use of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) * it. If we trust it then also stash it in an architecture
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * specific location (if appropriate) so it can be carried
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) * over further kexec()s.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) if (acpi_rsdp && !security_locked_down(LOCKDOWN_ACPI_TABLES)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) acpi_arch_set_root_pointer(acpi_rsdp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) return acpi_rsdp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) pa = acpi_arch_get_root_pointer();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) if (pa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) return pa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (efi_enabled(EFI_CONFIG_TABLES)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return efi.acpi20;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) if (efi.acpi != EFI_INVALID_TABLE_ADDR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) return efi.acpi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) pr_err(PREFIX "System description tables not found\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) } else if (IS_ENABLED(CONFIG_ACPI_LEGACY_TABLES_LOOKUP)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) acpi_find_root_pointer(&pa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) return pa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) /* Must be called with 'acpi_ioremap_lock' or RCU read lock held. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) static struct acpi_ioremap *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) acpi_map_lookup(acpi_physical_address phys, acpi_size size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) struct acpi_ioremap *map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) list_for_each_entry_rcu(map, &acpi_ioremaps, list, acpi_ioremap_lock_held())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) if (map->phys <= phys &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) phys + size <= map->phys + map->size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) return map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) /* Must be called with 'acpi_ioremap_lock' or RCU read lock held. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) static void __iomem *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) acpi_map_vaddr_lookup(acpi_physical_address phys, unsigned int size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) struct acpi_ioremap *map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) map = acpi_map_lookup(phys, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) if (map)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) return map->virt + (phys - map->phys);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) void __iomem *acpi_os_get_iomem(acpi_physical_address phys, unsigned int size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) struct acpi_ioremap *map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) void __iomem *virt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) mutex_lock(&acpi_ioremap_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) map = acpi_map_lookup(phys, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) if (map) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) virt = map->virt + (phys - map->phys);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) map->track.refcount++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) mutex_unlock(&acpi_ioremap_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) return virt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) EXPORT_SYMBOL_GPL(acpi_os_get_iomem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) /* Must be called with 'acpi_ioremap_lock' or RCU read lock held. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) static struct acpi_ioremap *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) acpi_map_lookup_virt(void __iomem *virt, acpi_size size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) struct acpi_ioremap *map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) list_for_each_entry_rcu(map, &acpi_ioremaps, list, acpi_ioremap_lock_held())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) if (map->virt <= virt &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) virt + size <= map->virt + map->size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) return map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) #if defined(CONFIG_IA64) || defined(CONFIG_ARM64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) /* ioremap will take care of cache attributes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) #define should_use_kmap(pfn) 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) #define should_use_kmap(pfn) page_is_ram(pfn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) static void __iomem *acpi_map(acpi_physical_address pg_off, unsigned long pg_sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) unsigned long pfn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) pfn = pg_off >> PAGE_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) if (should_use_kmap(pfn)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) if (pg_sz > PAGE_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) return (void __iomem __force *)kmap(pfn_to_page(pfn));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) return acpi_os_ioremap(pg_off, pg_sz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) static void acpi_unmap(acpi_physical_address pg_off, void __iomem *vaddr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) unsigned long pfn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) pfn = pg_off >> PAGE_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) if (should_use_kmap(pfn))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) kunmap(pfn_to_page(pfn));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) iounmap(vaddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) * acpi_os_map_iomem - Get a virtual address for a given physical address range.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) * @phys: Start of the physical address range to map.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) * @size: Size of the physical address range to map.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) * Look up the given physical address range in the list of existing ACPI memory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) * mappings. If found, get a reference to it and return a pointer to it (its
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) * virtual address). If not found, map it, add it to that list and return a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) * pointer to it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) * During early init (when acpi_permanent_mmap has not been set yet) this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) * routine simply calls __acpi_map_table() to get the job done.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) void __iomem __ref
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) *acpi_os_map_iomem(acpi_physical_address phys, acpi_size size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) struct acpi_ioremap *map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) void __iomem *virt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) acpi_physical_address pg_off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) acpi_size pg_sz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) if (phys > ULONG_MAX) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) printk(KERN_ERR PREFIX "Cannot map memory that high\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) if (!acpi_permanent_mmap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) return __acpi_map_table((unsigned long)phys, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) mutex_lock(&acpi_ioremap_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) /* Check if there's a suitable mapping already. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) map = acpi_map_lookup(phys, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) if (map) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) map->track.refcount++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) map = kzalloc(sizeof(*map), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) if (!map) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) mutex_unlock(&acpi_ioremap_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) pg_off = round_down(phys, PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) pg_sz = round_up(phys + size, PAGE_SIZE) - pg_off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) virt = acpi_map(phys, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) if (!virt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) mutex_unlock(&acpi_ioremap_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) kfree(map);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) INIT_LIST_HEAD(&map->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) map->virt = (void __iomem __force *)((unsigned long)virt & PAGE_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) map->phys = pg_off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) map->size = pg_sz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) map->track.refcount = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) list_add_tail_rcu(&map->list, &acpi_ioremaps);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) mutex_unlock(&acpi_ioremap_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) return map->virt + (phys - map->phys);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) EXPORT_SYMBOL_GPL(acpi_os_map_iomem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) void *__ref acpi_os_map_memory(acpi_physical_address phys, acpi_size size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) return (void *)acpi_os_map_iomem(phys, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) EXPORT_SYMBOL_GPL(acpi_os_map_memory);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) static void acpi_os_map_remove(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) struct acpi_ioremap *map = container_of(to_rcu_work(work),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) struct acpi_ioremap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) track.rwork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) acpi_unmap(map->phys, map->virt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) kfree(map);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) /* Must be called with mutex_lock(&acpi_ioremap_lock) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) static void acpi_os_drop_map_ref(struct acpi_ioremap *map)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) if (--map->track.refcount)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) list_del_rcu(&map->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) INIT_RCU_WORK(&map->track.rwork, acpi_os_map_remove);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) queue_rcu_work(system_wq, &map->track.rwork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) * acpi_os_unmap_iomem - Drop a memory mapping reference.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) * @virt: Start of the address range to drop a reference to.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) * @size: Size of the address range to drop a reference to.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) * Look up the given virtual address range in the list of existing ACPI memory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) * mappings, drop a reference to it and if there are no more active references
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) * to it, queue it up for later removal.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) * During early init (when acpi_permanent_mmap has not been set yet) this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) * routine simply calls __acpi_unmap_table() to get the job done. Since
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) * __acpi_unmap_table() is an __init function, the __ref annotation is needed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) * here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) void __ref acpi_os_unmap_iomem(void __iomem *virt, acpi_size size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) struct acpi_ioremap *map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) if (!acpi_permanent_mmap) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) __acpi_unmap_table(virt, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) mutex_lock(&acpi_ioremap_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) map = acpi_map_lookup_virt(virt, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) if (!map) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) mutex_unlock(&acpi_ioremap_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) WARN(true, PREFIX "%s: bad address %p\n", __func__, virt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) acpi_os_drop_map_ref(map);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) mutex_unlock(&acpi_ioremap_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) EXPORT_SYMBOL_GPL(acpi_os_unmap_iomem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) * acpi_os_unmap_memory - Drop a memory mapping reference.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) * @virt: Start of the address range to drop a reference to.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) * @size: Size of the address range to drop a reference to.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) void __ref acpi_os_unmap_memory(void *virt, acpi_size size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) acpi_os_unmap_iomem((void __iomem *)virt, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) EXPORT_SYMBOL_GPL(acpi_os_unmap_memory);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) void __iomem *acpi_os_map_generic_address(struct acpi_generic_address *gas)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) u64 addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) if (gas->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) /* Handle possible alignment issues */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) memcpy(&addr, &gas->address, sizeof(addr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) if (!addr || !gas->bit_width)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) return acpi_os_map_iomem(addr, gas->bit_width / 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) EXPORT_SYMBOL(acpi_os_map_generic_address);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) void acpi_os_unmap_generic_address(struct acpi_generic_address *gas)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) u64 addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) struct acpi_ioremap *map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) if (gas->space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) /* Handle possible alignment issues */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) memcpy(&addr, &gas->address, sizeof(addr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) if (!addr || !gas->bit_width)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) mutex_lock(&acpi_ioremap_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) map = acpi_map_lookup(addr, gas->bit_width / 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) if (!map) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) mutex_unlock(&acpi_ioremap_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) acpi_os_drop_map_ref(map);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) mutex_unlock(&acpi_ioremap_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) EXPORT_SYMBOL(acpi_os_unmap_generic_address);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) #ifdef ACPI_FUTURE_USAGE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) acpi_status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) acpi_os_get_physical_address(void *virt, acpi_physical_address * phys)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) if (!phys || !virt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) return AE_BAD_PARAMETER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) *phys = virt_to_phys(virt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) #ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) static bool acpi_rev_override;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) int __init acpi_rev_override_setup(char *str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) acpi_rev_override = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) __setup("acpi_rev_override", acpi_rev_override_setup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) #define acpi_rev_override false
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) #define ACPI_MAX_OVERRIDE_LEN 100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) static char acpi_os_name[ACPI_MAX_OVERRIDE_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) acpi_status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) acpi_os_predefined_override(const struct acpi_predefined_names *init_val,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) acpi_string *new_val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) if (!init_val || !new_val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) return AE_BAD_PARAMETER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) *new_val = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) if (!memcmp(init_val->name, "_OS_", 4) && strlen(acpi_os_name)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) printk(KERN_INFO PREFIX "Overriding _OS definition to '%s'\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) acpi_os_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) *new_val = acpi_os_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) if (!memcmp(init_val->name, "_REV", 4) && acpi_rev_override) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) printk(KERN_INFO PREFIX "Overriding _REV return value to 5\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) *new_val = (char *)5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) static irqreturn_t acpi_irq(int irq, void *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) u32 handled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) handled = (*acpi_irq_handler) (acpi_irq_context);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) if (handled) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) acpi_irq_handled++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) acpi_irq_not_handled++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) return IRQ_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) acpi_status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) void *context)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) unsigned int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) acpi_irq_stats_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) * ACPI interrupts different from the SCI in our copy of the FADT are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) * not supported.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) if (gsi != acpi_gbl_FADT.sci_interrupt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) return AE_BAD_PARAMETER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) if (acpi_irq_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) return AE_ALREADY_ACQUIRED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) if (acpi_gsi_to_irq(gsi, &irq) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) printk(KERN_ERR PREFIX "SCI (ACPI GSI %d) not registered\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) gsi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) acpi_irq_handler = handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) acpi_irq_context = context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) if (request_irq(irq, acpi_irq, IRQF_SHARED, "acpi", acpi_irq)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) printk(KERN_ERR PREFIX "SCI (IRQ%d) allocation failed\n", irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) acpi_irq_handler = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) return AE_NOT_ACQUIRED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) acpi_sci_irq = irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) acpi_status acpi_os_remove_interrupt_handler(u32 gsi, acpi_osd_handler handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) if (gsi != acpi_gbl_FADT.sci_interrupt || !acpi_sci_irq_valid())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) return AE_BAD_PARAMETER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) free_irq(acpi_sci_irq, acpi_irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) acpi_irq_handler = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) acpi_sci_irq = INVALID_ACPI_IRQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) * Running in interpreter thread context, safe to sleep
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) void acpi_os_sleep(u64 ms)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) msleep(ms);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) void acpi_os_stall(u32 us)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) while (us) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) u32 delay = 1000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) if (delay > us)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) delay = us;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) udelay(delay);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) touch_nmi_watchdog();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) us -= delay;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) * Support ACPI 3.0 AML Timer operand. Returns a 64-bit free-running,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) * monotonically increasing timer with 100ns granularity. Do not use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) * ktime_get() to implement this function because this function may get
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) * called after timekeeping has been suspended. Note: calling this function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) * after timekeeping has been suspended may lead to unexpected results
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) * because when timekeeping is suspended the jiffies counter is not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) * incremented. See also timekeeping_suspend().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) u64 acpi_os_get_timer(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) return (get_jiffies_64() - INITIAL_JIFFIES) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) (ACPI_100NSEC_PER_SEC / HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) acpi_status acpi_os_read_port(acpi_io_address port, u32 * value, u32 width)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) u32 dummy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) if (!value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) value = &dummy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) *value = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) if (width <= 8) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) *(u8 *) value = inb(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) } else if (width <= 16) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) *(u16 *) value = inw(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) } else if (width <= 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) *(u32 *) value = inl(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) EXPORT_SYMBOL(acpi_os_read_port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) acpi_status acpi_os_write_port(acpi_io_address port, u32 value, u32 width)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) if (width <= 8) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) outb(value, port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) } else if (width <= 16) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) outw(value, port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) } else if (width <= 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) outl(value, port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) EXPORT_SYMBOL(acpi_os_write_port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) int acpi_os_read_iomem(void __iomem *virt_addr, u64 *value, u32 width)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) switch (width) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) case 8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) *(u8 *) value = readb(virt_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) case 16:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) *(u16 *) value = readw(virt_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) case 32:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) *(u32 *) value = readl(virt_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) case 64:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) *(u64 *) value = readq(virt_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) acpi_status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) acpi_os_read_memory(acpi_physical_address phys_addr, u64 *value, u32 width)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) void __iomem *virt_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) unsigned int size = width / 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) bool unmap = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) u64 dummy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) virt_addr = acpi_map_vaddr_lookup(phys_addr, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) if (!virt_addr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) virt_addr = acpi_os_ioremap(phys_addr, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) if (!virt_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) return AE_BAD_ADDRESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) unmap = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) if (!value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) value = &dummy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) error = acpi_os_read_iomem(virt_addr, value, width);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) BUG_ON(error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) if (unmap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) iounmap(virt_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) acpi_status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) acpi_os_write_memory(acpi_physical_address phys_addr, u64 value, u32 width)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) void __iomem *virt_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) unsigned int size = width / 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) bool unmap = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) virt_addr = acpi_map_vaddr_lookup(phys_addr, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) if (!virt_addr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) virt_addr = acpi_os_ioremap(phys_addr, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) if (!virt_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) return AE_BAD_ADDRESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) unmap = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) switch (width) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) case 8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) writeb(value, virt_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) case 16:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) writew(value, virt_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) case 32:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) writel(value, virt_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) case 64:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) writeq(value, virt_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) if (unmap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) iounmap(virt_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) #ifdef CONFIG_PCI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) acpi_status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) acpi_os_read_pci_configuration(struct acpi_pci_id * pci_id, u32 reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) u64 *value, u32 width)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) int result, size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) u32 value32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) if (!value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) return AE_BAD_PARAMETER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) switch (width) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) case 8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) size = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) case 16:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) size = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) case 32:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) size = 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) return AE_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) result = raw_pci_read(pci_id->segment, pci_id->bus,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) PCI_DEVFN(pci_id->device, pci_id->function),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) reg, size, &value32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) *value = value32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) return (result ? AE_ERROR : AE_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) acpi_status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) acpi_os_write_pci_configuration(struct acpi_pci_id * pci_id, u32 reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) u64 value, u32 width)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) int result, size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) switch (width) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) case 8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) size = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) case 16:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) size = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) case 32:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) size = 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) return AE_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) result = raw_pci_write(pci_id->segment, pci_id->bus,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) PCI_DEVFN(pci_id->device, pci_id->function),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) reg, size, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) return (result ? AE_ERROR : AE_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) static void acpi_os_execute_deferred(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) dpc->function(dpc->context);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) kfree(dpc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) #ifdef CONFIG_ACPI_DEBUGGER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) static struct acpi_debugger acpi_debugger;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) static bool acpi_debugger_initialized;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) int acpi_register_debugger(struct module *owner,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) const struct acpi_debugger_ops *ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) mutex_lock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) if (acpi_debugger.ops) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) ret = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) goto err_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) acpi_debugger.owner = owner;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) acpi_debugger.ops = ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) err_lock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) mutex_unlock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) EXPORT_SYMBOL(acpi_register_debugger);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) void acpi_unregister_debugger(const struct acpi_debugger_ops *ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) mutex_lock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) if (ops == acpi_debugger.ops) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) acpi_debugger.ops = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) acpi_debugger.owner = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) mutex_unlock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) EXPORT_SYMBOL(acpi_unregister_debugger);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) int acpi_debugger_create_thread(acpi_osd_exec_callback function, void *context)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) int (*func)(acpi_osd_exec_callback, void *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) struct module *owner;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) if (!acpi_debugger_initialized)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) mutex_lock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) if (!acpi_debugger.ops) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) goto err_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) if (!try_module_get(acpi_debugger.owner)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) goto err_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) func = acpi_debugger.ops->create_thread;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) owner = acpi_debugger.owner;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) mutex_unlock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) ret = func(function, context);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) mutex_lock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) module_put(owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) err_lock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) mutex_unlock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) ssize_t acpi_debugger_write_log(const char *msg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) ssize_t ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) ssize_t (*func)(const char *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) struct module *owner;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) if (!acpi_debugger_initialized)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) mutex_lock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) if (!acpi_debugger.ops) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) goto err_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) if (!try_module_get(acpi_debugger.owner)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) goto err_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) func = acpi_debugger.ops->write_log;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) owner = acpi_debugger.owner;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) mutex_unlock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) ret = func(msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) mutex_lock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) module_put(owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) err_lock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) mutex_unlock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) ssize_t acpi_debugger_read_cmd(char *buffer, size_t buffer_length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) ssize_t ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) ssize_t (*func)(char *, size_t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) struct module *owner;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) if (!acpi_debugger_initialized)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) mutex_lock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) if (!acpi_debugger.ops) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) goto err_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) if (!try_module_get(acpi_debugger.owner)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) goto err_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) func = acpi_debugger.ops->read_cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) owner = acpi_debugger.owner;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) mutex_unlock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) ret = func(buffer, buffer_length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) mutex_lock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) module_put(owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) err_lock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) mutex_unlock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) int acpi_debugger_wait_command_ready(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) int (*func)(bool, char *, size_t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) struct module *owner;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) if (!acpi_debugger_initialized)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) mutex_lock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) if (!acpi_debugger.ops) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) goto err_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) if (!try_module_get(acpi_debugger.owner)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) goto err_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) func = acpi_debugger.ops->wait_command_ready;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) owner = acpi_debugger.owner;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) mutex_unlock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) ret = func(acpi_gbl_method_executing,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) acpi_gbl_db_line_buf, ACPI_DB_LINE_BUFFER_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) mutex_lock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) module_put(owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) err_lock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) mutex_unlock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) int acpi_debugger_notify_command_complete(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) int (*func)(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) struct module *owner;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) if (!acpi_debugger_initialized)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) mutex_lock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) if (!acpi_debugger.ops) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) goto err_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) if (!try_module_get(acpi_debugger.owner)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) goto err_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) func = acpi_debugger.ops->notify_command_complete;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) owner = acpi_debugger.owner;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) mutex_unlock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) ret = func();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) mutex_lock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) module_put(owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) err_lock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) mutex_unlock(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) int __init acpi_debugger_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) mutex_init(&acpi_debugger.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) acpi_debugger_initialized = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) * FUNCTION: acpi_os_execute
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) * PARAMETERS: Type - Type of the callback
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) * Function - Function to be executed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) * Context - Function parameters
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) * RETURN: Status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) * DESCRIPTION: Depending on type, either queues function for deferred execution or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) * immediately executes function on a separate thread.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) acpi_status acpi_os_execute(acpi_execute_type type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) acpi_osd_exec_callback function, void *context)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) acpi_status status = AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) struct acpi_os_dpc *dpc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) struct workqueue_struct *queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) "Scheduling function [%p(%p)] for deferred execution.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) function, context));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) if (type == OSL_DEBUGGER_MAIN_THREAD) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) ret = acpi_debugger_create_thread(function, context);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) pr_err("Call to kthread_create() failed.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) status = AE_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) goto out_thread;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) * Allocate/initialize DPC structure. Note that this memory will be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) * freed by the callee. The kernel handles the work_struct list in a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) * way that allows us to also free its memory inside the callee.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) * Because we may want to schedule several tasks with different
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) * parameters we can't use the approach some kernel code uses of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) * having a static work_struct.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) dpc = kzalloc(sizeof(struct acpi_os_dpc), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) if (!dpc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) return AE_NO_MEMORY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) dpc->function = function;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) dpc->context = context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) * To prevent lockdep from complaining unnecessarily, make sure that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) * there is a different static lockdep key for each workqueue by using
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) * INIT_WORK() for each of them separately.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) if (type == OSL_NOTIFY_HANDLER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) queue = kacpi_notify_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) INIT_WORK(&dpc->work, acpi_os_execute_deferred);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) } else if (type == OSL_GPE_HANDLER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) queue = kacpid_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) INIT_WORK(&dpc->work, acpi_os_execute_deferred);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) pr_err("Unsupported os_execute type %d.\n", type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) status = AE_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) if (ACPI_FAILURE(status))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) goto err_workqueue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) * On some machines, a software-initiated SMI causes corruption unless
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) * the SMI runs on CPU 0. An SMI can be initiated by any AML, but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) * typically it's done in GPE-related methods that are run via
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) * workqueues, so we can avoid the known corruption cases by always
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) * queueing on CPU 0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) ret = queue_work_on(0, queue, &dpc->work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) if (!ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) printk(KERN_ERR PREFIX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) "Call to queue_work() failed.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) status = AE_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) err_workqueue:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) if (ACPI_FAILURE(status))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) kfree(dpc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) out_thread:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) EXPORT_SYMBOL(acpi_os_execute);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) void acpi_os_wait_events_complete(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) * Make sure the GPE handler or the fixed event handler is not used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) * on another CPU after removal.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) if (acpi_sci_irq_valid())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) synchronize_hardirq(acpi_sci_irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) flush_workqueue(kacpid_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) flush_workqueue(kacpi_notify_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) EXPORT_SYMBOL(acpi_os_wait_events_complete);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) struct acpi_hp_work {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) struct work_struct work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) struct acpi_device *adev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) u32 src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) static void acpi_hotplug_work_fn(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) struct acpi_hp_work *hpw = container_of(work, struct acpi_hp_work, work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) acpi_os_wait_events_complete();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) acpi_device_hotplug(hpw->adev, hpw->src);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) kfree(hpw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) acpi_status acpi_hotplug_schedule(struct acpi_device *adev, u32 src)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) struct acpi_hp_work *hpw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) "Scheduling hotplug event (%p, %u) for deferred execution.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) adev, src));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) hpw = kmalloc(sizeof(*hpw), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) if (!hpw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) return AE_NO_MEMORY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) INIT_WORK(&hpw->work, acpi_hotplug_work_fn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) hpw->adev = adev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) hpw->src = src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) * We can't run hotplug code in kacpid_wq/kacpid_notify_wq etc., because
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) * the hotplug code may call driver .remove() functions, which may
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) * invoke flush_scheduled_work()/acpi_os_wait_events_complete() to flush
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) * these workqueues.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) if (!queue_work(kacpi_hotplug_wq, &hpw->work)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) kfree(hpw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) return AE_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) bool acpi_queue_hotplug_work(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) return queue_work(kacpi_hotplug_wq, work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) acpi_status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) acpi_os_create_semaphore(u32 max_units, u32 initial_units, acpi_handle * handle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) struct semaphore *sem = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) sem = acpi_os_allocate_zeroed(sizeof(struct semaphore));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) if (!sem)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) return AE_NO_MEMORY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) sema_init(sem, initial_units);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) *handle = (acpi_handle *) sem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Creating semaphore[%p|%d].\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) *handle, initial_units));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) * TODO: A better way to delete semaphores? Linux doesn't have a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) * 'delete_semaphore()' function -- may result in an invalid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) * pointer dereference for non-synchronized consumers. Should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) * we at least check for blocked threads and signal/cancel them?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) acpi_status acpi_os_delete_semaphore(acpi_handle handle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) struct semaphore *sem = (struct semaphore *)handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) if (!sem)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) return AE_BAD_PARAMETER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Deleting semaphore[%p].\n", handle));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) BUG_ON(!list_empty(&sem->wait_list));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) kfree(sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) sem = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) * TODO: Support for units > 1?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) acpi_status acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 timeout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) acpi_status status = AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) struct semaphore *sem = (struct semaphore *)handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) long jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) if (!acpi_os_initialized)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) if (!sem || (units < 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) return AE_BAD_PARAMETER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) if (units > 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) return AE_SUPPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Waiting for semaphore[%p|%d|%d]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) handle, units, timeout));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) if (timeout == ACPI_WAIT_FOREVER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) jiffies = MAX_SCHEDULE_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) jiffies = msecs_to_jiffies(timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) ret = down_timeout(sem, jiffies);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) status = AE_TIME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) ACPI_DEBUG_PRINT((ACPI_DB_MUTEX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) "Failed to acquire semaphore[%p|%d|%d], %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) handle, units, timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) acpi_format_exception(status)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) ACPI_DEBUG_PRINT((ACPI_DB_MUTEX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) "Acquired semaphore[%p|%d|%d]", handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) units, timeout));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) * TODO: Support for units > 1?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) struct semaphore *sem = (struct semaphore *)handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) if (!acpi_os_initialized)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) if (!sem || (units < 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) return AE_BAD_PARAMETER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) if (units > 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) return AE_SUPPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Signaling semaphore[%p|%d]\n", handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) units));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) up(sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) acpi_status acpi_os_get_line(char *buffer, u32 buffer_length, u32 *bytes_read)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) #ifdef ENABLE_DEBUGGER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) if (acpi_in_debugger) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) u32 chars;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) kdb_read(buffer, buffer_length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) /* remove the CR kdb includes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) chars = strlen(buffer) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) buffer[chars] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) ret = acpi_debugger_read_cmd(buffer, buffer_length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) return AE_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) if (bytes_read)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) *bytes_read = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) EXPORT_SYMBOL(acpi_os_get_line);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) acpi_status acpi_os_wait_command_ready(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) ret = acpi_debugger_wait_command_ready();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) return AE_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) acpi_status acpi_os_notify_command_complete(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) ret = acpi_debugger_notify_command_complete();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) return AE_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) acpi_status acpi_os_signal(u32 function, void *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) switch (function) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) case ACPI_SIGNAL_FATAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) printk(KERN_ERR PREFIX "Fatal opcode executed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) case ACPI_SIGNAL_BREAKPOINT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) * AML Breakpoint
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) * ACPI spec. says to treat it as a NOP unless
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) * you are debugging. So if/when we integrate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) * AML debugger into the kernel debugger its
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) * hook will go here. But until then it is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) * not useful to print anything on breakpoints.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) static int __init acpi_os_name_setup(char *str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) char *p = acpi_os_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) int count = ACPI_MAX_OVERRIDE_LEN - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) if (!str || !*str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) for (; count-- && *str; str++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) if (isalnum(*str) || *str == ' ' || *str == ':')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) *p++ = *str;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) else if (*str == '\'' || *str == '"')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) *p = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) __setup("acpi_os_name=", acpi_os_name_setup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) * Disable the auto-serialization of named objects creation methods.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) * This feature is enabled by default. It marks the AML control methods
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) * that contain the opcodes to create named objects as "Serialized".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) static int __init acpi_no_auto_serialize_setup(char *str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) acpi_gbl_auto_serialize_methods = FALSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) pr_info("ACPI: auto-serialization disabled\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) __setup("acpi_no_auto_serialize", acpi_no_auto_serialize_setup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) /* Check of resource interference between native drivers and ACPI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) * OperationRegions (SystemIO and System Memory only).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) * IO ports and memory declared in ACPI might be used by the ACPI subsystem
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) * in arbitrary AML code and can interfere with legacy drivers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) * acpi_enforce_resources= can be set to:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) * - strict (default) (2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) * -> further driver trying to access the resources will not load
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) * - lax (1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) * -> further driver trying to access the resources will load, but you
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) * get a system message that something might go wrong...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) * - no (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) * -> ACPI Operation Region resources will not be registered
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) #define ENFORCE_RESOURCES_STRICT 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) #define ENFORCE_RESOURCES_LAX 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) #define ENFORCE_RESOURCES_NO 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) static unsigned int acpi_enforce_resources = ENFORCE_RESOURCES_STRICT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) static int __init acpi_enforce_resources_setup(char *str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) if (str == NULL || *str == '\0')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) if (!strcmp("strict", str))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) acpi_enforce_resources = ENFORCE_RESOURCES_STRICT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) else if (!strcmp("lax", str))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) acpi_enforce_resources = ENFORCE_RESOURCES_LAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) else if (!strcmp("no", str))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) acpi_enforce_resources = ENFORCE_RESOURCES_NO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) __setup("acpi_enforce_resources=", acpi_enforce_resources_setup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) /* Check for resource conflicts between ACPI OperationRegions and native
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) * drivers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) int acpi_check_resource_conflict(const struct resource *res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) acpi_adr_space_type space_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) acpi_size length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) u8 warn = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) int clash = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) if (acpi_enforce_resources == ENFORCE_RESOURCES_NO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) if (!(res->flags & IORESOURCE_IO) && !(res->flags & IORESOURCE_MEM))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) if (res->flags & IORESOURCE_IO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) space_id = ACPI_ADR_SPACE_SYSTEM_IO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) space_id = ACPI_ADR_SPACE_SYSTEM_MEMORY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) length = resource_size(res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) if (acpi_enforce_resources != ENFORCE_RESOURCES_NO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) warn = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) clash = acpi_check_address_range(space_id, res->start, length, warn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) if (clash) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) if (acpi_enforce_resources != ENFORCE_RESOURCES_NO) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) if (acpi_enforce_resources == ENFORCE_RESOURCES_LAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) printk(KERN_NOTICE "ACPI: This conflict may"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) " cause random problems and system"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) " instability\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) printk(KERN_INFO "ACPI: If an ACPI driver is available"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) " for this device, you should use it instead of"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) " the native driver\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) if (acpi_enforce_resources == ENFORCE_RESOURCES_STRICT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) EXPORT_SYMBOL(acpi_check_resource_conflict);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) int acpi_check_region(resource_size_t start, resource_size_t n,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) struct resource res = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) .start = start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502) .end = start + n - 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) .name = name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) .flags = IORESOURCE_IO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) return acpi_check_resource_conflict(&res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) EXPORT_SYMBOL(acpi_check_region);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) static acpi_status acpi_deactivate_mem_region(acpi_handle handle, u32 level,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) void *_res, void **return_value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) struct acpi_mem_space_context **mem_ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) union acpi_operand_object *handler_obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) union acpi_operand_object *region_obj2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) union acpi_operand_object *region_obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518) struct resource *res = _res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521) region_obj = acpi_ns_get_attached_object(handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) if (!region_obj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) handler_obj = region_obj->region.handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) if (!handler_obj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) if (region_obj->region.space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) if (!(region_obj->region.flags & AOPOBJ_SETUP_COMPLETE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) region_obj2 = acpi_ns_get_secondary_object(region_obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) if (!region_obj2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) mem_ctx = (void *)®ion_obj2->extra.region_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) if (!(mem_ctx[0]->address >= res->start &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) mem_ctx[0]->address < res->end))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) status = handler_obj->address_space.setup(region_obj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546) ACPI_REGION_DEACTIVATE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) NULL, (void **)mem_ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) if (ACPI_SUCCESS(status))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) region_obj->region.flags &= ~(AOPOBJ_SETUP_COMPLETE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) * acpi_release_memory - Release any mappings done to a memory region
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) * @handle: Handle to namespace node
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) * @res: Memory resource
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) * @level: A level that terminates the search
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560) * Walks through @handle and unmaps all SystemMemory Operation Regions that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) * overlap with @res and that have already been activated (mapped).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) * This is a helper that allows drivers to place special requirements on memory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) * region that may overlap with operation regions, primarily allowing them to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) * safely map the region as non-cached memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567) * The unmapped Operation Regions will be automatically remapped next time they
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568) * are called, so the drivers do not need to do anything else.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) acpi_status acpi_release_memory(acpi_handle handle, struct resource *res,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) u32 level)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) if (!(res->flags & IORESOURCE_MEM))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) return AE_TYPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) status = acpi_walk_namespace(ACPI_TYPE_REGION, handle, level,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579) acpi_deactivate_mem_region, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580) res, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) if (ACPI_FAILURE(status))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) * Wait for all of the mappings queued up for removal by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) * acpi_deactivate_mem_region() to actually go away.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) synchronize_rcu();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) rcu_barrier();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) flush_scheduled_work();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) EXPORT_SYMBOL_GPL(acpi_release_memory);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) * Let drivers know whether the resource checks are effective
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) int acpi_resources_are_enforced(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) return acpi_enforce_resources == ENFORCE_RESOURCES_STRICT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) EXPORT_SYMBOL(acpi_resources_are_enforced);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) * Deallocate the memory for a spinlock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) void acpi_os_delete_lock(acpi_spinlock handle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) ACPI_FREE(handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) * Acquire a spinlock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616) * handle is a pointer to the spinlock_t.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) acpi_cpu_flags acpi_os_acquire_lock(acpi_spinlock lockp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) __acquires(lockp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) acpi_cpu_flags flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) spin_lock_irqsave(lockp, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) return flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628) * Release a spinlock. See above.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) void acpi_os_release_lock(acpi_spinlock lockp, acpi_cpu_flags flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632) __releases(lockp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) spin_unlock_irqrestore(lockp, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637) #ifndef ACPI_USE_LOCAL_CACHE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) * FUNCTION: acpi_os_create_cache
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643) * PARAMETERS: name - Ascii name for the cache
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) * size - Size of each cached object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) * depth - Maximum depth of the cache (in objects) <ignored>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646) * cache - Where the new cache object is returned
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) * RETURN: status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650) * DESCRIPTION: Create a cache object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654) acpi_status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) acpi_os_create_cache(char *name, u16 size, u16 depth, acpi_cache_t ** cache)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) *cache = kmem_cache_create(name, size, 0, 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) if (*cache == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659) return AE_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666) * FUNCTION: acpi_os_purge_cache
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) * PARAMETERS: Cache - Handle to cache object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) * RETURN: Status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672) * DESCRIPTION: Free all objects within the requested cache.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676) acpi_status acpi_os_purge_cache(acpi_cache_t * cache)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678) kmem_cache_shrink(cache);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) return (AE_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684) * FUNCTION: acpi_os_delete_cache
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) * PARAMETERS: Cache - Handle to cache object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) * RETURN: Status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690) * DESCRIPTION: Free all objects within the requested cache and delete the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) * cache object.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) acpi_status acpi_os_delete_cache(acpi_cache_t * cache)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) kmem_cache_destroy(cache);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698) return (AE_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703) * FUNCTION: acpi_os_release_object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705) * PARAMETERS: Cache - Handle to cache object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706) * Object - The object to be released
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708) * RETURN: None
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) * DESCRIPTION: Release an object to the specified cache. If cache is full,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711) * the object is deleted.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717) kmem_cache_free(cache, object);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718) return (AE_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722) static int __init acpi_no_static_ssdt_setup(char *s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724) acpi_gbl_disable_ssdt_table_install = TRUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725) pr_info("ACPI: static SSDT installation disabled\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) early_param("acpi_no_static_ssdt", acpi_no_static_ssdt_setup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) static int __init acpi_disable_return_repair(char *s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734) printk(KERN_NOTICE PREFIX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735) "ACPI: Predefined validation mechanism disabled\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736) acpi_gbl_disable_auto_repair = TRUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741) __setup("acpica_no_return_repair", acpi_disable_return_repair);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) acpi_status __init acpi_os_initialize(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745) acpi_os_map_generic_address(&acpi_gbl_FADT.xpm1a_event_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746) acpi_os_map_generic_address(&acpi_gbl_FADT.xpm1b_event_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748) acpi_gbl_xgpe0_block_logical_address =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749) (unsigned long)acpi_os_map_generic_address(&acpi_gbl_FADT.xgpe0_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750) acpi_gbl_xgpe1_block_logical_address =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751) (unsigned long)acpi_os_map_generic_address(&acpi_gbl_FADT.xgpe1_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753) if (acpi_gbl_FADT.flags & ACPI_FADT_RESET_REGISTER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755) * Use acpi_os_map_generic_address to pre-map the reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756) * register if it's in system memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758) void *rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760) rv = acpi_os_map_generic_address(&acpi_gbl_FADT.reset_register);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761) pr_debug(PREFIX "%s: map reset_reg %s\n", __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762) rv ? "successful" : "failed");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764) acpi_os_initialized = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769) acpi_status __init acpi_os_initialize1(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771) kacpid_wq = alloc_workqueue("kacpid", 0, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772) kacpi_notify_wq = alloc_workqueue("kacpi_notify", 0, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773) kacpi_hotplug_wq = alloc_ordered_workqueue("kacpi_hotplug", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774) BUG_ON(!kacpid_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775) BUG_ON(!kacpi_notify_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776) BUG_ON(!kacpi_hotplug_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777) acpi_osi_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781) acpi_status acpi_os_terminate(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783) if (acpi_irq_handler) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784) acpi_os_remove_interrupt_handler(acpi_gbl_FADT.sci_interrupt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785) acpi_irq_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1788) acpi_os_unmap_generic_address(&acpi_gbl_FADT.xgpe1_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1789) acpi_os_unmap_generic_address(&acpi_gbl_FADT.xgpe0_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1790) acpi_gbl_xgpe0_block_logical_address = 0UL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1791) acpi_gbl_xgpe1_block_logical_address = 0UL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1792)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1793) acpi_os_unmap_generic_address(&acpi_gbl_FADT.xpm1b_event_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1794) acpi_os_unmap_generic_address(&acpi_gbl_FADT.xpm1a_event_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1795)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1796) if (acpi_gbl_FADT.flags & ACPI_FADT_RESET_REGISTER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1797) acpi_os_unmap_generic_address(&acpi_gbl_FADT.reset_register);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1798)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1799) destroy_workqueue(kacpid_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1800) destroy_workqueue(kacpi_notify_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1801) destroy_workqueue(kacpi_hotplug_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1802)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1803) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1804) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1805)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1806) acpi_status acpi_os_prepare_sleep(u8 sleep_state, u32 pm1a_control,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1807) u32 pm1b_control)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1808) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1809) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1810) if (__acpi_os_prepare_sleep)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1811) rc = __acpi_os_prepare_sleep(sleep_state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1812) pm1a_control, pm1b_control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1813) if (rc < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1814) return AE_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1815) else if (rc > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1816) return AE_CTRL_TERMINATE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1817)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1818) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1819) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1820)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1821) void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1822) u32 pm1a_ctrl, u32 pm1b_ctrl))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1823) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1824) __acpi_os_prepare_sleep = func;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1825) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1826)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1827) #if (ACPI_REDUCED_HARDWARE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1828) acpi_status acpi_os_prepare_extended_sleep(u8 sleep_state, u32 val_a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1829) u32 val_b)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1830) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1831) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1832) if (__acpi_os_prepare_extended_sleep)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1833) rc = __acpi_os_prepare_extended_sleep(sleep_state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1834) val_a, val_b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1835) if (rc < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1836) return AE_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1837) else if (rc > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1838) return AE_CTRL_TERMINATE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1839)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1840) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1841) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1842) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1843) acpi_status acpi_os_prepare_extended_sleep(u8 sleep_state, u32 val_a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1844) u32 val_b)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1845) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1846) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1847) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1848) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1849)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1850) void acpi_os_set_prepare_extended_sleep(int (*func)(u8 sleep_state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1851) u32 val_a, u32 val_b))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1852) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1853) __acpi_os_prepare_extended_sleep = func;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1854) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1855)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1856) acpi_status acpi_os_enter_sleep(u8 sleep_state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1857) u32 reg_a_value, u32 reg_b_value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1858) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1859) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1860)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1861) if (acpi_gbl_reduced_hardware)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1862) status = acpi_os_prepare_extended_sleep(sleep_state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1863) reg_a_value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1864) reg_b_value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1865) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1866) status = acpi_os_prepare_sleep(sleep_state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1867) reg_a_value, reg_b_value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1868) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1869) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags