^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * APEI Error INJection support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * EINJ provides a hardware error injection mechanism, this is useful
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * for debugging and testing of other APEI and RAS features.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * For more information about EINJ, please refer to ACPI Specification
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * version 4.0, section 17.5.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * Copyright 2009-2010 Intel Corp.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * Author: Huang Ying <ying.huang@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/debugfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/nmi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <asm/unaligned.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include "apei-internal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #undef pr_fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define pr_fmt(fmt) "EINJ: " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define SPIN_UNIT 100 /* 100ns */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) /* Firmware should respond within 1 milliseconds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define FIRMWARE_TIMEOUT (1 * NSEC_PER_MSEC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define ACPI5_VENDOR_BIT BIT(31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define MEM_ERROR_MASK (ACPI_EINJ_MEMORY_CORRECTABLE | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) ACPI_EINJ_MEMORY_UNCORRECTABLE | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) ACPI_EINJ_MEMORY_FATAL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * ACPI version 5 provides a SET_ERROR_TYPE_WITH_ADDRESS action.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) static int acpi5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) struct set_error_type_with_address {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) u32 type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) u32 vendor_extension;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) u32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) u32 apicid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) u64 memory_address;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) u64 memory_address_range;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) u32 pcie_sbdf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) SETWA_FLAGS_APICID = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) SETWA_FLAGS_MEM = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) SETWA_FLAGS_PCIE_SBDF = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * Vendor extensions for platform specific operations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) struct vendor_error_type_extension {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) u32 length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) u32 pcie_sbdf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) u16 vendor_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) u16 device_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) u8 rev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) u8 reserved[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) static u32 notrigger;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) static u32 vendor_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) static struct debugfs_blob_wrapper vendor_blob;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) static char vendor_dev[64];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * Some BIOSes allow parameters to the SET_ERROR_TYPE entries in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * EINJ table through an unpublished extension. Use with caution as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * most will ignore the parameter and make their own choice of address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * for error injection. This extension is used only if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * param_extension module parameter is specified.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) struct einj_parameter {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) u64 type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) u64 reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) u64 reserved2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) u64 param1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) u64 param2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) #define EINJ_OP_BUSY 0x1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #define EINJ_STATUS_SUCCESS 0x0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) #define EINJ_STATUS_FAIL 0x1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) #define EINJ_STATUS_INVAL 0x2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) #define EINJ_TAB_ENTRY(tab) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) ((struct acpi_whea_header *)((char *)(tab) + \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) sizeof(struct acpi_table_einj)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) static bool param_extension;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) module_param(param_extension, bool, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static struct acpi_table_einj *einj_tab;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) static struct apei_resources einj_resources;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) static struct apei_exec_ins_type einj_ins_type[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) [ACPI_EINJ_READ_REGISTER] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) .flags = APEI_EXEC_INS_ACCESS_REGISTER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) .run = apei_exec_read_register,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) [ACPI_EINJ_READ_REGISTER_VALUE] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) .flags = APEI_EXEC_INS_ACCESS_REGISTER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) .run = apei_exec_read_register_value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) [ACPI_EINJ_WRITE_REGISTER] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) .flags = APEI_EXEC_INS_ACCESS_REGISTER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) .run = apei_exec_write_register,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) [ACPI_EINJ_WRITE_REGISTER_VALUE] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) .flags = APEI_EXEC_INS_ACCESS_REGISTER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) .run = apei_exec_write_register_value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) [ACPI_EINJ_NOOP] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) .flags = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) .run = apei_exec_noop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) * Prevent EINJ interpreter to run simultaneously, because the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) * corresponding firmware implementation may not work properly when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * invoked simultaneously.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) static DEFINE_MUTEX(einj_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) static void *einj_param;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) static void einj_exec_ctx_init(struct apei_exec_context *ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) apei_exec_ctx_init(ctx, einj_ins_type, ARRAY_SIZE(einj_ins_type),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) EINJ_TAB_ENTRY(einj_tab), einj_tab->entries);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) static int __einj_get_available_error_type(u32 *type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) struct apei_exec_context ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) einj_exec_ctx_init(&ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) rc = apei_exec_run(&ctx, ACPI_EINJ_GET_ERROR_TYPE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) *type = apei_exec_ctx_get_output(&ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) /* Get error injection capabilities of the platform */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) static int einj_get_available_error_type(u32 *type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) mutex_lock(&einj_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) rc = __einj_get_available_error_type(type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) mutex_unlock(&einj_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) static int einj_timedout(u64 *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) if ((s64)*t < SPIN_UNIT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) pr_warn(FW_WARN "Firmware does not respond in time\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) *t -= SPIN_UNIT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) ndelay(SPIN_UNIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) touch_nmi_watchdog();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) static void check_vendor_extension(u64 paddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) struct set_error_type_with_address *v5param)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) int offset = v5param->vendor_extension;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) struct vendor_error_type_extension *v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) u32 sbdf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) if (!offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) v = acpi_os_map_iomem(paddr + offset, sizeof(*v));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) if (!v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) sbdf = v->pcie_sbdf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) sprintf(vendor_dev, "%x:%x:%x.%x vendor_id=%x device_id=%x rev_id=%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) sbdf >> 24, (sbdf >> 16) & 0xff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) (sbdf >> 11) & 0x1f, (sbdf >> 8) & 0x7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) v->vendor_id, v->device_id, v->rev_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) acpi_os_unmap_iomem(v, sizeof(*v));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) static void *einj_get_parameter_address(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) u64 pa_v4 = 0, pa_v5 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) struct acpi_whea_header *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) entry = EINJ_TAB_ENTRY(einj_tab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) for (i = 0; i < einj_tab->entries; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) if (entry->action == ACPI_EINJ_SET_ERROR_TYPE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) entry->instruction == ACPI_EINJ_WRITE_REGISTER &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) entry->register_region.space_id ==
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) ACPI_ADR_SPACE_SYSTEM_MEMORY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) pa_v4 = get_unaligned(&entry->register_region.address);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) if (entry->action == ACPI_EINJ_SET_ERROR_TYPE_WITH_ADDRESS &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) entry->instruction == ACPI_EINJ_WRITE_REGISTER &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) entry->register_region.space_id ==
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) ACPI_ADR_SPACE_SYSTEM_MEMORY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) pa_v5 = get_unaligned(&entry->register_region.address);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) entry++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) if (pa_v5) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) struct set_error_type_with_address *v5param;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) v5param = acpi_os_map_iomem(pa_v5, sizeof(*v5param));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) if (v5param) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) acpi5 = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) check_vendor_extension(pa_v5, v5param);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) return v5param;
^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) if (param_extension && pa_v4) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) struct einj_parameter *v4param;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) v4param = acpi_os_map_iomem(pa_v4, sizeof(*v4param));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) if (!v4param)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) if (v4param->reserved1 || v4param->reserved2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) acpi_os_unmap_iomem(v4param, sizeof(*v4param));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) return v4param;
^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) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) /* do sanity check to trigger table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) static int einj_check_trigger_header(struct acpi_einj_trigger *trigger_tab)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) if (trigger_tab->header_size != sizeof(struct acpi_einj_trigger))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) if (trigger_tab->table_size > PAGE_SIZE ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) trigger_tab->table_size < trigger_tab->header_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) if (trigger_tab->entry_count !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) (trigger_tab->table_size - trigger_tab->header_size) /
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) sizeof(struct acpi_einj_entry))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) static struct acpi_generic_address *einj_get_trigger_parameter_region(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) struct acpi_einj_trigger *trigger_tab, u64 param1, u64 param2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) struct acpi_whea_header *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) entry = (struct acpi_whea_header *)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) ((char *)trigger_tab + sizeof(struct acpi_einj_trigger));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) for (i = 0; i < trigger_tab->entry_count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) if (entry->action == ACPI_EINJ_TRIGGER_ERROR &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) entry->instruction <= ACPI_EINJ_WRITE_REGISTER_VALUE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) entry->register_region.space_id ==
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) ACPI_ADR_SPACE_SYSTEM_MEMORY &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) (entry->register_region.address & param2) == (param1 & param2))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) return &entry->register_region;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) entry++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) /* Execute instructions in trigger error action table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) static int __einj_error_trigger(u64 trigger_paddr, u32 type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) u64 param1, u64 param2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) struct acpi_einj_trigger *trigger_tab = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) struct apei_exec_context trigger_ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) struct apei_resources trigger_resources;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) struct acpi_whea_header *trigger_entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) struct resource *r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) u32 table_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) int rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) struct acpi_generic_address *trigger_param_region = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) r = request_mem_region(trigger_paddr, sizeof(*trigger_tab),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) "APEI EINJ Trigger Table");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) if (!r) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) pr_err("Can not request [mem %#010llx-%#010llx] for Trigger table\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) (unsigned long long)trigger_paddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) (unsigned long long)trigger_paddr +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) sizeof(*trigger_tab) - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) trigger_tab = ioremap_cache(trigger_paddr, sizeof(*trigger_tab));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) if (!trigger_tab) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) pr_err("Failed to map trigger table!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) goto out_rel_header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) rc = einj_check_trigger_header(trigger_tab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) pr_warn(FW_BUG "Invalid trigger error action table.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) goto out_rel_header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) /* No action structures in the TRIGGER_ERROR table, nothing to do */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) if (!trigger_tab->entry_count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) goto out_rel_header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) table_size = trigger_tab->table_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) r = request_mem_region(trigger_paddr + sizeof(*trigger_tab),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) table_size - sizeof(*trigger_tab),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) "APEI EINJ Trigger Table");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) if (!r) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) pr_err("Can not request [mem %#010llx-%#010llx] for Trigger Table Entry\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) (unsigned long long)trigger_paddr + sizeof(*trigger_tab),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) (unsigned long long)trigger_paddr + table_size - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) goto out_rel_header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) iounmap(trigger_tab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) trigger_tab = ioremap_cache(trigger_paddr, table_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) if (!trigger_tab) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) pr_err("Failed to map trigger table!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) goto out_rel_entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) trigger_entry = (struct acpi_whea_header *)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) ((char *)trigger_tab + sizeof(struct acpi_einj_trigger));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) apei_resources_init(&trigger_resources);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) apei_exec_ctx_init(&trigger_ctx, einj_ins_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) ARRAY_SIZE(einj_ins_type),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) trigger_entry, trigger_tab->entry_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) rc = apei_exec_collect_resources(&trigger_ctx, &trigger_resources);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) goto out_fini;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) rc = apei_resources_sub(&trigger_resources, &einj_resources);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) goto out_fini;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) * Some firmware will access target address specified in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) * param1 to trigger the error when injecting memory error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) * This will cause resource conflict with regular memory. So
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) * remove it from trigger table resources.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) if ((param_extension || acpi5) && (type & MEM_ERROR_MASK) && param2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) struct apei_resources addr_resources;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) apei_resources_init(&addr_resources);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) trigger_param_region = einj_get_trigger_parameter_region(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) trigger_tab, param1, param2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) if (trigger_param_region) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) rc = apei_resources_add(&addr_resources,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) trigger_param_region->address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) trigger_param_region->bit_width/8, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) goto out_fini;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) rc = apei_resources_sub(&trigger_resources,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) &addr_resources);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) apei_resources_fini(&addr_resources);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) goto out_fini;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) rc = apei_resources_request(&trigger_resources, "APEI EINJ Trigger");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) goto out_fini;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) rc = apei_exec_pre_map_gars(&trigger_ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) goto out_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) rc = apei_exec_run(&trigger_ctx, ACPI_EINJ_TRIGGER_ERROR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) apei_exec_post_unmap_gars(&trigger_ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) out_release:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) apei_resources_release(&trigger_resources);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) out_fini:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) apei_resources_fini(&trigger_resources);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) out_rel_entry:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) release_mem_region(trigger_paddr + sizeof(*trigger_tab),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) table_size - sizeof(*trigger_tab));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) out_rel_header:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) release_mem_region(trigger_paddr, sizeof(*trigger_tab));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) if (trigger_tab)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) iounmap(trigger_tab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) return rc;
^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) static int __einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) u64 param3, u64 param4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) struct apei_exec_context ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) u64 val, trigger_paddr, timeout = FIRMWARE_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) einj_exec_ctx_init(&ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) rc = apei_exec_run_optional(&ctx, ACPI_EINJ_BEGIN_OPERATION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) apei_exec_ctx_set_input(&ctx, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) if (acpi5) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) struct set_error_type_with_address *v5param = einj_param;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) v5param->type = type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) if (type & ACPI5_VENDOR_BIT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) switch (vendor_flags) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) case SETWA_FLAGS_APICID:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) v5param->apicid = param1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) case SETWA_FLAGS_MEM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) v5param->memory_address = param1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) v5param->memory_address_range = param2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) case SETWA_FLAGS_PCIE_SBDF:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) v5param->pcie_sbdf = param1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) v5param->flags = vendor_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) } else if (flags) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) v5param->flags = flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) v5param->memory_address = param1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) v5param->memory_address_range = param2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) v5param->apicid = param3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) v5param->pcie_sbdf = param4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) switch (type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) case ACPI_EINJ_PROCESSOR_CORRECTABLE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) case ACPI_EINJ_PROCESSOR_UNCORRECTABLE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) case ACPI_EINJ_PROCESSOR_FATAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) v5param->apicid = param1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) v5param->flags = SETWA_FLAGS_APICID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) case ACPI_EINJ_MEMORY_CORRECTABLE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) case ACPI_EINJ_MEMORY_UNCORRECTABLE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) case ACPI_EINJ_MEMORY_FATAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) v5param->memory_address = param1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) v5param->memory_address_range = param2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) v5param->flags = SETWA_FLAGS_MEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) case ACPI_EINJ_PCIX_CORRECTABLE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) case ACPI_EINJ_PCIX_UNCORRECTABLE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) case ACPI_EINJ_PCIX_FATAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) v5param->pcie_sbdf = param1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) v5param->flags = SETWA_FLAGS_PCIE_SBDF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) rc = apei_exec_run(&ctx, ACPI_EINJ_SET_ERROR_TYPE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) if (einj_param) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) struct einj_parameter *v4param = einj_param;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) v4param->param1 = param1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) v4param->param2 = param2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) rc = apei_exec_run(&ctx, ACPI_EINJ_EXECUTE_OPERATION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) for (;;) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) rc = apei_exec_run(&ctx, ACPI_EINJ_CHECK_BUSY_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) val = apei_exec_ctx_get_output(&ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) if (!(val & EINJ_OP_BUSY))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) if (einj_timedout(&timeout))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) rc = apei_exec_run(&ctx, ACPI_EINJ_GET_COMMAND_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) val = apei_exec_ctx_get_output(&ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) if (val != EINJ_STATUS_SUCCESS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) rc = apei_exec_run(&ctx, ACPI_EINJ_GET_TRIGGER_TABLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) trigger_paddr = apei_exec_ctx_get_output(&ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) if (notrigger == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) rc = __einj_error_trigger(trigger_paddr, type, param1, param2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) rc = apei_exec_run_optional(&ctx, ACPI_EINJ_END_OPERATION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) /* Inject the specified hardware error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) static int einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) u64 param3, u64 param4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) u64 base_addr, size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) /* If user manually set "flags", make sure it is legal */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) if (flags && (flags &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) ~(SETWA_FLAGS_APICID|SETWA_FLAGS_MEM|SETWA_FLAGS_PCIE_SBDF)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) * We need extra sanity checks for memory errors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) * Other types leap directly to injection.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) /* ensure param1/param2 existed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) if (!(param_extension || acpi5))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) goto inject;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) /* ensure injection is memory related */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) if (type & ACPI5_VENDOR_BIT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) if (vendor_flags != SETWA_FLAGS_MEM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) goto inject;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) } else if (!(type & MEM_ERROR_MASK) && !(flags & SETWA_FLAGS_MEM))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) goto inject;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) * Disallow crazy address masks that give BIOS leeway to pick
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) * injection address almost anywhere. Insist on page or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) * better granularity and that target address is normal RAM or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) * NVDIMM.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) base_addr = param1 & param2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) size = ~param2 + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) if (((param2 & PAGE_MASK) != PAGE_MASK) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) ((region_intersects(base_addr, size, IORESOURCE_SYSTEM_RAM, IORES_DESC_NONE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) != REGION_INTERSECTS) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) (region_intersects(base_addr, size, IORESOURCE_MEM, IORES_DESC_PERSISTENT_MEMORY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) != REGION_INTERSECTS)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) inject:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) mutex_lock(&einj_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) rc = __einj_error_inject(type, flags, param1, param2, param3, param4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) mutex_unlock(&einj_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) return rc;
^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) static u32 error_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) static u32 error_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) static u64 error_param1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) static u64 error_param2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) static u64 error_param3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) static u64 error_param4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) static struct dentry *einj_debug_dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) static int available_error_type_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) u32 available_error_type = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) rc = einj_get_available_error_type(&available_error_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) if (available_error_type & 0x0001)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) seq_printf(m, "0x00000001\tProcessor Correctable\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) if (available_error_type & 0x0002)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) seq_printf(m, "0x00000002\tProcessor Uncorrectable non-fatal\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) if (available_error_type & 0x0004)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) seq_printf(m, "0x00000004\tProcessor Uncorrectable fatal\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) if (available_error_type & 0x0008)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) seq_printf(m, "0x00000008\tMemory Correctable\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) if (available_error_type & 0x0010)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) seq_printf(m, "0x00000010\tMemory Uncorrectable non-fatal\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) if (available_error_type & 0x0020)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) seq_printf(m, "0x00000020\tMemory Uncorrectable fatal\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) if (available_error_type & 0x0040)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) seq_printf(m, "0x00000040\tPCI Express Correctable\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) if (available_error_type & 0x0080)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) seq_printf(m, "0x00000080\tPCI Express Uncorrectable non-fatal\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) if (available_error_type & 0x0100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) seq_printf(m, "0x00000100\tPCI Express Uncorrectable fatal\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) if (available_error_type & 0x0200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) seq_printf(m, "0x00000200\tPlatform Correctable\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) if (available_error_type & 0x0400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) seq_printf(m, "0x00000400\tPlatform Uncorrectable non-fatal\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) if (available_error_type & 0x0800)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) seq_printf(m, "0x00000800\tPlatform Uncorrectable fatal\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) DEFINE_SHOW_ATTRIBUTE(available_error_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) static int error_type_get(void *data, u64 *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) *val = error_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) return 0;
^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) static int error_type_set(void *data, u64 val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) u32 available_error_type = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) u32 tval, vendor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) * Vendor defined types have 0x80000000 bit set, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) * are not enumerated by ACPI_EINJ_GET_ERROR_TYPE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) vendor = val & ACPI5_VENDOR_BIT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) tval = val & 0x7fffffff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) /* Only one error type can be specified */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) if (tval & (tval - 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) if (!vendor) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) rc = einj_get_available_error_type(&available_error_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) if (!(val & available_error_type))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) error_type = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) DEFINE_DEBUGFS_ATTRIBUTE(error_type_fops, error_type_get, error_type_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) "0x%llx\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) static int error_inject_set(void *data, u64 val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) if (!error_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) return einj_error_inject(error_type, error_flags, error_param1, error_param2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) error_param3, error_param4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) DEFINE_DEBUGFS_ATTRIBUTE(error_inject_fops, NULL, error_inject_set, "%llu\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) static int einj_check_table(struct acpi_table_einj *einj_tab)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) if ((einj_tab->header_length !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) (sizeof(struct acpi_table_einj) - sizeof(einj_tab->header)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) && (einj_tab->header_length != sizeof(struct acpi_table_einj)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) if (einj_tab->header.length < sizeof(struct acpi_table_einj))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) if (einj_tab->entries !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) (einj_tab->header.length - sizeof(struct acpi_table_einj)) /
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) sizeof(struct acpi_einj_entry))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) static int __init einj_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) struct apei_exec_context ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) if (acpi_disabled) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) pr_warn("ACPI disabled.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) status = acpi_get_table(ACPI_SIG_EINJ, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) (struct acpi_table_header **)&einj_tab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) if (status == AE_NOT_FOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) pr_warn("EINJ table not found.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) else if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) pr_err("Failed to get EINJ table: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) acpi_format_exception(status));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) rc = einj_check_table(einj_tab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) pr_warn(FW_BUG "Invalid EINJ table.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) goto err_put_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) einj_debug_dir = debugfs_create_dir("einj", apei_get_debugfs_dir());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) debugfs_create_file("available_error_type", S_IRUSR, einj_debug_dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) NULL, &available_error_type_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) debugfs_create_file_unsafe("error_type", 0600, einj_debug_dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) NULL, &error_type_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) debugfs_create_file_unsafe("error_inject", 0200, einj_debug_dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) NULL, &error_inject_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) apei_resources_init(&einj_resources);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) einj_exec_ctx_init(&ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) rc = apei_exec_collect_resources(&ctx, &einj_resources);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) pr_err("Error collecting EINJ resources.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) goto err_fini;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) rc = apei_resources_request(&einj_resources, "APEI EINJ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) pr_err("Error requesting memory/port resources.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) goto err_fini;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) rc = apei_exec_pre_map_gars(&ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) pr_err("Error pre-mapping GARs.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) goto err_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) einj_param = einj_get_parameter_address();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) if ((param_extension || acpi5) && einj_param) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) debugfs_create_x32("flags", S_IRUSR | S_IWUSR, einj_debug_dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) &error_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) debugfs_create_x64("param1", S_IRUSR | S_IWUSR, einj_debug_dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) &error_param1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) debugfs_create_x64("param2", S_IRUSR | S_IWUSR, einj_debug_dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) &error_param2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) debugfs_create_x64("param3", S_IRUSR | S_IWUSR, einj_debug_dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) &error_param3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) debugfs_create_x64("param4", S_IRUSR | S_IWUSR, einj_debug_dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) &error_param4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) debugfs_create_x32("notrigger", S_IRUSR | S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) einj_debug_dir, ¬rigger);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) if (vendor_dev[0]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) vendor_blob.data = vendor_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) vendor_blob.size = strlen(vendor_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) debugfs_create_blob("vendor", S_IRUSR, einj_debug_dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) &vendor_blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) debugfs_create_x32("vendor_flags", S_IRUSR | S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) einj_debug_dir, &vendor_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) pr_info("Error INJection is initialized.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) err_release:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) apei_resources_release(&einj_resources);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) err_fini:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) apei_resources_fini(&einj_resources);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) debugfs_remove_recursive(einj_debug_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) err_put_table:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) acpi_put_table((struct acpi_table_header *)einj_tab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) static void __exit einj_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) struct apei_exec_context ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) if (einj_param) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) acpi_size size = (acpi5) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) sizeof(struct set_error_type_with_address) :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) sizeof(struct einj_parameter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) acpi_os_unmap_iomem(einj_param, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) einj_exec_ctx_init(&ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) apei_exec_post_unmap_gars(&ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) apei_resources_release(&einj_resources);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) apei_resources_fini(&einj_resources);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) debugfs_remove_recursive(einj_debug_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) acpi_put_table((struct acpi_table_header *)einj_tab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) module_init(einj_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) module_exit(einj_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) MODULE_AUTHOR("Huang Ying");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) MODULE_DESCRIPTION("APEI Error INJection support");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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