Merging upstream version 6.9.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 0 insertions, 834 deletions

diff --git a/drivers/acpi/apei/einj.c b/drivers/acpi/apei/einj.c
deleted file mode 100644
index 89fb9331c6..0000000000
--- a/drivers/acpi/apei/einj.c
+++ /dev/null
@@ -1,834 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * APEI Error INJection support
- *
- * EINJ provides a hardware error injection mechanism, this is useful
- * for debugging and testing of other APEI and RAS features.
- *
- * For more information about EINJ, please refer to ACPI Specification
- * version 4.0, section 17.5.
- *
- * Copyright 2009-2010 Intel Corp.
- *   Author: Huang Ying <ying.huang@intel.com>
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/io.h>
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
-#include <linux/nmi.h>
-#include <linux/delay.h>
-#include <linux/mm.h>
-#include <asm/unaligned.h>
-
-#include "apei-internal.h"
-
-#undef pr_fmt
-#define pr_fmt(fmt) "EINJ: " fmt
-
-#define SLEEP_UNIT_MIN		1000			/* 1ms */
-#define SLEEP_UNIT_MAX		5000			/* 5ms */
-/* Firmware should respond within 1 seconds */
-#define FIRMWARE_TIMEOUT	(1 * USEC_PER_SEC)
-#define ACPI5_VENDOR_BIT	BIT(31)
-#define MEM_ERROR_MASK		(ACPI_EINJ_MEMORY_CORRECTABLE | \
-				ACPI_EINJ_MEMORY_UNCORRECTABLE | \
-				ACPI_EINJ_MEMORY_FATAL)
-
-/*
- * ACPI version 5 provides a SET_ERROR_TYPE_WITH_ADDRESS action.
- */
-static int acpi5;
-
-struct set_error_type_with_address {
-	u32	type;
-	u32	vendor_extension;
-	u32	flags;
-	u32	apicid;
-	u64	memory_address;
-	u64	memory_address_range;
-	u32	pcie_sbdf;
-};
-enum {
-	SETWA_FLAGS_APICID = 1,
-	SETWA_FLAGS_MEM = 2,
-	SETWA_FLAGS_PCIE_SBDF = 4,
-};
-
-/*
- * Vendor extensions for platform specific operations
- */
-struct vendor_error_type_extension {
-	u32	length;
-	u32	pcie_sbdf;
-	u16	vendor_id;
-	u16	device_id;
-	u8	rev_id;
-	u8	reserved[3];
-};
-
-static u32 notrigger;
-
-static u32 vendor_flags;
-static struct debugfs_blob_wrapper vendor_blob;
-static struct debugfs_blob_wrapper vendor_errors;
-static char vendor_dev[64];
-
-/*
- * Some BIOSes allow parameters to the SET_ERROR_TYPE entries in the
- * EINJ table through an unpublished extension. Use with caution as
- * most will ignore the parameter and make their own choice of address
- * for error injection.  This extension is used only if
- * param_extension module parameter is specified.
- */
-struct einj_parameter {
-	u64 type;
-	u64 reserved1;
-	u64 reserved2;
-	u64 param1;
-	u64 param2;
-};
-
-#define EINJ_OP_BUSY			0x1
-#define EINJ_STATUS_SUCCESS		0x0
-#define EINJ_STATUS_FAIL		0x1
-#define EINJ_STATUS_INVAL		0x2
-
-#define EINJ_TAB_ENTRY(tab)						\
-	((struct acpi_whea_header *)((char *)(tab) +			\
-				    sizeof(struct acpi_table_einj)))
-
-static bool param_extension;
-module_param(param_extension, bool, 0);
-
-static struct acpi_table_einj *einj_tab;
-
-static struct apei_resources einj_resources;
-
-static struct apei_exec_ins_type einj_ins_type[] = {
-	[ACPI_EINJ_READ_REGISTER] = {
-		.flags = APEI_EXEC_INS_ACCESS_REGISTER,
-		.run   = apei_exec_read_register,
-	},
-	[ACPI_EINJ_READ_REGISTER_VALUE] = {
-		.flags = APEI_EXEC_INS_ACCESS_REGISTER,
-		.run   = apei_exec_read_register_value,
-	},
-	[ACPI_EINJ_WRITE_REGISTER] = {
-		.flags = APEI_EXEC_INS_ACCESS_REGISTER,
-		.run   = apei_exec_write_register,
-	},
-	[ACPI_EINJ_WRITE_REGISTER_VALUE] = {
-		.flags = APEI_EXEC_INS_ACCESS_REGISTER,
-		.run   = apei_exec_write_register_value,
-	},
-	[ACPI_EINJ_NOOP] = {
-		.flags = 0,
-		.run   = apei_exec_noop,
-	},
-};
-
-/*
- * Prevent EINJ interpreter to run simultaneously, because the
- * corresponding firmware implementation may not work properly when
- * invoked simultaneously.
- */
-static DEFINE_MUTEX(einj_mutex);
-
-static void *einj_param;
-
-static void einj_exec_ctx_init(struct apei_exec_context *ctx)
-{
-	apei_exec_ctx_init(ctx, einj_ins_type, ARRAY_SIZE(einj_ins_type),
-			   EINJ_TAB_ENTRY(einj_tab), einj_tab->entries);
-}
-
-static int __einj_get_available_error_type(u32 *type)
-{
-	struct apei_exec_context ctx;
-	int rc;
-
-	einj_exec_ctx_init(&ctx);
-	rc = apei_exec_run(&ctx, ACPI_EINJ_GET_ERROR_TYPE);
-	if (rc)
-		return rc;
-	*type = apei_exec_ctx_get_output(&ctx);
-
-	return 0;
-}
-
-/* Get error injection capabilities of the platform */
-static int einj_get_available_error_type(u32 *type)
-{
-	int rc;
-
-	mutex_lock(&einj_mutex);
-	rc = __einj_get_available_error_type(type);
-	mutex_unlock(&einj_mutex);
-
-	return rc;
-}
-
-static int einj_timedout(u64 *t)
-{
-	if ((s64)*t < SLEEP_UNIT_MIN) {
-		pr_warn(FW_WARN "Firmware does not respond in time\n");
-		return 1;
-	}
-	*t -= SLEEP_UNIT_MIN;
-	usleep_range(SLEEP_UNIT_MIN, SLEEP_UNIT_MAX);
-
-	return 0;
-}
-
-static void get_oem_vendor_struct(u64 paddr, int offset,
-				  struct vendor_error_type_extension *v)
-{
-	unsigned long vendor_size;
-	u64 target_pa = paddr + offset + sizeof(struct vendor_error_type_extension);
-
-	vendor_size = v->length - sizeof(struct vendor_error_type_extension);
-
-	if (vendor_size)
-		vendor_errors.data = acpi_os_map_memory(target_pa, vendor_size);
-
-	if (vendor_errors.data)
-		vendor_errors.size = vendor_size;
-}
-
-static void check_vendor_extension(u64 paddr,
-				   struct set_error_type_with_address *v5param)
-{
-	int	offset = v5param->vendor_extension;
-	struct	vendor_error_type_extension *v;
-	u32	sbdf;
-
-	if (!offset)
-		return;
-	v = acpi_os_map_iomem(paddr + offset, sizeof(*v));
-	if (!v)
-		return;
-	get_oem_vendor_struct(paddr, offset, v);
-	sbdf = v->pcie_sbdf;
-	sprintf(vendor_dev, "%x:%x:%x.%x vendor_id=%x device_id=%x rev_id=%x\n",
-		sbdf >> 24, (sbdf >> 16) & 0xff,
-		(sbdf >> 11) & 0x1f, (sbdf >> 8) & 0x7,
-		 v->vendor_id, v->device_id, v->rev_id);
-	acpi_os_unmap_iomem(v, sizeof(*v));
-}
-
-static void *einj_get_parameter_address(void)
-{
-	int i;
-	u64 pa_v4 = 0, pa_v5 = 0;
-	struct acpi_whea_header *entry;
-
-	entry = EINJ_TAB_ENTRY(einj_tab);
-	for (i = 0; i < einj_tab->entries; i++) {
-		if (entry->action == ACPI_EINJ_SET_ERROR_TYPE &&
-		    entry->instruction == ACPI_EINJ_WRITE_REGISTER &&
-		    entry->register_region.space_id ==
-		    ACPI_ADR_SPACE_SYSTEM_MEMORY)
-			pa_v4 = get_unaligned(&entry->register_region.address);
-		if (entry->action == ACPI_EINJ_SET_ERROR_TYPE_WITH_ADDRESS &&
-		    entry->instruction == ACPI_EINJ_WRITE_REGISTER &&
-		    entry->register_region.space_id ==
-		    ACPI_ADR_SPACE_SYSTEM_MEMORY)
-			pa_v5 = get_unaligned(&entry->register_region.address);
-		entry++;
-	}
-	if (pa_v5) {
-		struct set_error_type_with_address *v5param;
-
-		v5param = acpi_os_map_iomem(pa_v5, sizeof(*v5param));
-		if (v5param) {
-			acpi5 = 1;
-			check_vendor_extension(pa_v5, v5param);
-			return v5param;
-		}
-	}
-	if (param_extension && pa_v4) {
-		struct einj_parameter *v4param;
-
-		v4param = acpi_os_map_iomem(pa_v4, sizeof(*v4param));
-		if (!v4param)
-			return NULL;
-		if (v4param->reserved1 || v4param->reserved2) {
-			acpi_os_unmap_iomem(v4param, sizeof(*v4param));
-			return NULL;
-		}
-		return v4param;
-	}
-
-	return NULL;
-}
-
-/* do sanity check to trigger table */
-static int einj_check_trigger_header(struct acpi_einj_trigger *trigger_tab)
-{
-	if (trigger_tab->header_size != sizeof(struct acpi_einj_trigger))
-		return -EINVAL;
-	if (trigger_tab->table_size > PAGE_SIZE ||
-	    trigger_tab->table_size < trigger_tab->header_size)
-		return -EINVAL;
-	if (trigger_tab->entry_count !=
-	    (trigger_tab->table_size - trigger_tab->header_size) /
-	    sizeof(struct acpi_einj_entry))
-		return -EINVAL;
-
-	return 0;
-}
-
-static struct acpi_generic_address *einj_get_trigger_parameter_region(
-	struct acpi_einj_trigger *trigger_tab, u64 param1, u64 param2)
-{
-	int i;
-	struct acpi_whea_header *entry;
-
-	entry = (struct acpi_whea_header *)
-		((char *)trigger_tab + sizeof(struct acpi_einj_trigger));
-	for (i = 0; i < trigger_tab->entry_count; i++) {
-		if (entry->action == ACPI_EINJ_TRIGGER_ERROR &&
-		entry->instruction <= ACPI_EINJ_WRITE_REGISTER_VALUE &&
-		entry->register_region.space_id ==
-			ACPI_ADR_SPACE_SYSTEM_MEMORY &&
-		(entry->register_region.address & param2) == (param1 & param2))
-			return &entry->register_region;
-		entry++;
-	}
-
-	return NULL;
-}
-/* Execute instructions in trigger error action table */
-static int __einj_error_trigger(u64 trigger_paddr, u32 type,
-				u64 param1, u64 param2)
-{
-	struct acpi_einj_trigger *trigger_tab = NULL;
-	struct apei_exec_context trigger_ctx;
-	struct apei_resources trigger_resources;
-	struct acpi_whea_header *trigger_entry;
-	struct resource *r;
-	u32 table_size;
-	int rc = -EIO;
-	struct acpi_generic_address *trigger_param_region = NULL;
-
-	r = request_mem_region(trigger_paddr, sizeof(*trigger_tab),
-			       "APEI EINJ Trigger Table");
-	if (!r) {
-		pr_err("Can not request [mem %#010llx-%#010llx] for Trigger table\n",
-		       (unsigned long long)trigger_paddr,
-		       (unsigned long long)trigger_paddr +
-			    sizeof(*trigger_tab) - 1);
-		goto out;
-	}
-	trigger_tab = ioremap_cache(trigger_paddr, sizeof(*trigger_tab));
-	if (!trigger_tab) {
-		pr_err("Failed to map trigger table!\n");
-		goto out_rel_header;
-	}
-	rc = einj_check_trigger_header(trigger_tab);
-	if (rc) {
-		pr_warn(FW_BUG "Invalid trigger error action table.\n");
-		goto out_rel_header;
-	}
-
-	/* No action structures in the TRIGGER_ERROR table, nothing to do */
-	if (!trigger_tab->entry_count)
-		goto out_rel_header;
-
-	rc = -EIO;
-	table_size = trigger_tab->table_size;
-	r = request_mem_region(trigger_paddr + sizeof(*trigger_tab),
-			       table_size - sizeof(*trigger_tab),
-			       "APEI EINJ Trigger Table");
-	if (!r) {
-		pr_err("Can not request [mem %#010llx-%#010llx] for Trigger Table Entry\n",
-		       (unsigned long long)trigger_paddr + sizeof(*trigger_tab),
-		       (unsigned long long)trigger_paddr + table_size - 1);
-		goto out_rel_header;
-	}
-	iounmap(trigger_tab);
-	trigger_tab = ioremap_cache(trigger_paddr, table_size);
-	if (!trigger_tab) {
-		pr_err("Failed to map trigger table!\n");
-		goto out_rel_entry;
-	}
-	trigger_entry = (struct acpi_whea_header *)
-		((char *)trigger_tab + sizeof(struct acpi_einj_trigger));
-	apei_resources_init(&trigger_resources);
-	apei_exec_ctx_init(&trigger_ctx, einj_ins_type,
-			   ARRAY_SIZE(einj_ins_type),
-			   trigger_entry, trigger_tab->entry_count);
-	rc = apei_exec_collect_resources(&trigger_ctx, &trigger_resources);
-	if (rc)
-		goto out_fini;
-	rc = apei_resources_sub(&trigger_resources, &einj_resources);
-	if (rc)
-		goto out_fini;
-	/*
-	 * Some firmware will access target address specified in
-	 * param1 to trigger the error when injecting memory error.
-	 * This will cause resource conflict with regular memory.  So
-	 * remove it from trigger table resources.
-	 */
-	if ((param_extension || acpi5) && (type & MEM_ERROR_MASK) && param2) {
-		struct apei_resources addr_resources;
-
-		apei_resources_init(&addr_resources);
-		trigger_param_region = einj_get_trigger_parameter_region(
-			trigger_tab, param1, param2);
-		if (trigger_param_region) {
-			rc = apei_resources_add(&addr_resources,
-				trigger_param_region->address,
-				trigger_param_region->bit_width/8, true);
-			if (rc)
-				goto out_fini;
-			rc = apei_resources_sub(&trigger_resources,
-					&addr_resources);
-		}
-		apei_resources_fini(&addr_resources);
-		if (rc)
-			goto out_fini;
-	}
-	rc = apei_resources_request(&trigger_resources, "APEI EINJ Trigger");
-	if (rc)
-		goto out_fini;
-	rc = apei_exec_pre_map_gars(&trigger_ctx);
-	if (rc)
-		goto out_release;
-
-	rc = apei_exec_run(&trigger_ctx, ACPI_EINJ_TRIGGER_ERROR);
-
-	apei_exec_post_unmap_gars(&trigger_ctx);
-out_release:
-	apei_resources_release(&trigger_resources);
-out_fini:
-	apei_resources_fini(&trigger_resources);
-out_rel_entry:
-	release_mem_region(trigger_paddr + sizeof(*trigger_tab),
-			   table_size - sizeof(*trigger_tab));
-out_rel_header:
-	release_mem_region(trigger_paddr, sizeof(*trigger_tab));
-out:
-	if (trigger_tab)
-		iounmap(trigger_tab);
-
-	return rc;
-}
-
-static int __einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
-			       u64 param3, u64 param4)
-{
-	struct apei_exec_context ctx;
-	u64 val, trigger_paddr, timeout = FIRMWARE_TIMEOUT;
-	int rc;
-
-	einj_exec_ctx_init(&ctx);
-
-	rc = apei_exec_run_optional(&ctx, ACPI_EINJ_BEGIN_OPERATION);
-	if (rc)
-		return rc;
-	apei_exec_ctx_set_input(&ctx, type);
-	if (acpi5) {
-		struct set_error_type_with_address *v5param = einj_param;
-
-		v5param->type = type;
-		if (type & ACPI5_VENDOR_BIT) {
-			switch (vendor_flags) {
-			case SETWA_FLAGS_APICID:
-				v5param->apicid = param1;
-				break;
-			case SETWA_FLAGS_MEM:
-				v5param->memory_address = param1;
-				v5param->memory_address_range = param2;
-				break;
-			case SETWA_FLAGS_PCIE_SBDF:
-				v5param->pcie_sbdf = param1;
-				break;
-			}
-			v5param->flags = vendor_flags;
-		} else if (flags) {
-			v5param->flags = flags;
-			v5param->memory_address = param1;
-			v5param->memory_address_range = param2;
-			v5param->apicid = param3;
-			v5param->pcie_sbdf = param4;
-		} else {
-			switch (type) {
-			case ACPI_EINJ_PROCESSOR_CORRECTABLE:
-			case ACPI_EINJ_PROCESSOR_UNCORRECTABLE:
-			case ACPI_EINJ_PROCESSOR_FATAL:
-				v5param->apicid = param1;
-				v5param->flags = SETWA_FLAGS_APICID;
-				break;
-			case ACPI_EINJ_MEMORY_CORRECTABLE:
-			case ACPI_EINJ_MEMORY_UNCORRECTABLE:
-			case ACPI_EINJ_MEMORY_FATAL:
-				v5param->memory_address = param1;
-				v5param->memory_address_range = param2;
-				v5param->flags = SETWA_FLAGS_MEM;
-				break;
-			case ACPI_EINJ_PCIX_CORRECTABLE:
-			case ACPI_EINJ_PCIX_UNCORRECTABLE:
-			case ACPI_EINJ_PCIX_FATAL:
-				v5param->pcie_sbdf = param1;
-				v5param->flags = SETWA_FLAGS_PCIE_SBDF;
-				break;
-			}
-		}
-	} else {
-		rc = apei_exec_run(&ctx, ACPI_EINJ_SET_ERROR_TYPE);
-		if (rc)
-			return rc;
-		if (einj_param) {
-			struct einj_parameter *v4param = einj_param;
-
-			v4param->param1 = param1;
-			v4param->param2 = param2;
-		}
-	}
-	rc = apei_exec_run(&ctx, ACPI_EINJ_EXECUTE_OPERATION);
-	if (rc)
-		return rc;
-	for (;;) {
-		rc = apei_exec_run(&ctx, ACPI_EINJ_CHECK_BUSY_STATUS);
-		if (rc)
-			return rc;
-		val = apei_exec_ctx_get_output(&ctx);
-		if (!(val & EINJ_OP_BUSY))
-			break;
-		if (einj_timedout(&timeout))
-			return -EIO;
-	}
-	rc = apei_exec_run(&ctx, ACPI_EINJ_GET_COMMAND_STATUS);
-	if (rc)
-		return rc;
-	val = apei_exec_ctx_get_output(&ctx);
-	if (val == EINJ_STATUS_FAIL)
-		return -EBUSY;
-	else if (val == EINJ_STATUS_INVAL)
-		return -EINVAL;
-
-	/*
-	 * The error is injected into the platform successfully, then it needs
-	 * to trigger the error.
-	 */
-	rc = apei_exec_run(&ctx, ACPI_EINJ_GET_TRIGGER_TABLE);
-	if (rc)
-		return rc;
-	trigger_paddr = apei_exec_ctx_get_output(&ctx);
-	if (notrigger == 0) {
-		rc = __einj_error_trigger(trigger_paddr, type, param1, param2);
-		if (rc)
-			return rc;
-	}
-	rc = apei_exec_run_optional(&ctx, ACPI_EINJ_END_OPERATION);
-
-	return rc;
-}
-
-/* Inject the specified hardware error */
-static int einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
-			     u64 param3, u64 param4)
-{
-	int rc;
-	u64 base_addr, size;
-
-	/* If user manually set "flags", make sure it is legal */
-	if (flags && (flags &
-		~(SETWA_FLAGS_APICID|SETWA_FLAGS_MEM|SETWA_FLAGS_PCIE_SBDF)))
-		return -EINVAL;
-
-	/*
-	 * We need extra sanity checks for memory errors.
-	 * Other types leap directly to injection.
-	 */
-
-	/* ensure param1/param2 existed */
-	if (!(param_extension || acpi5))
-		goto inject;
-
-	/* ensure injection is memory related */
-	if (type & ACPI5_VENDOR_BIT) {
-		if (vendor_flags != SETWA_FLAGS_MEM)
-			goto inject;
-	} else if (!(type & MEM_ERROR_MASK) && !(flags & SETWA_FLAGS_MEM))
-		goto inject;
-
-	/*
-	 * Disallow crazy address masks that give BIOS leeway to pick
-	 * injection address almost anywhere. Insist on page or
-	 * better granularity and that target address is normal RAM or
-	 * NVDIMM.
-	 */
-	base_addr = param1 & param2;
-	size = ~param2 + 1;
-
-	if (((param2 & PAGE_MASK) != PAGE_MASK) ||
-	    ((region_intersects(base_addr, size, IORESOURCE_SYSTEM_RAM, IORES_DESC_NONE)
-				!= REGION_INTERSECTS) &&
-	     (region_intersects(base_addr, size, IORESOURCE_MEM, IORES_DESC_PERSISTENT_MEMORY)
-				!= REGION_INTERSECTS) &&
-	     (region_intersects(base_addr, size, IORESOURCE_MEM, IORES_DESC_SOFT_RESERVED)
-				!= REGION_INTERSECTS) &&
-	     !arch_is_platform_page(base_addr)))
-		return -EINVAL;
-
-	if (is_zero_pfn(base_addr >> PAGE_SHIFT))
-		return -EADDRINUSE;
-
-inject:
-	mutex_lock(&einj_mutex);
-	rc = __einj_error_inject(type, flags, param1, param2, param3, param4);
-	mutex_unlock(&einj_mutex);
-
-	return rc;
-}
-
-static u32 error_type;
-static u32 error_flags;
-static u64 error_param1;
-static u64 error_param2;
-static u64 error_param3;
-static u64 error_param4;
-static struct dentry *einj_debug_dir;
-static struct { u32 mask; const char *str; } const einj_error_type_string[] = {
-	{ BIT(0), "Processor Correctable" },
-	{ BIT(1), "Processor Uncorrectable non-fatal" },
-	{ BIT(2), "Processor Uncorrectable fatal" },
-	{ BIT(3), "Memory Correctable" },
-	{ BIT(4), "Memory Uncorrectable non-fatal" },
-	{ BIT(5), "Memory Uncorrectable fatal" },
-	{ BIT(6), "PCI Express Correctable" },
-	{ BIT(7), "PCI Express Uncorrectable non-fatal" },
-	{ BIT(8), "PCI Express Uncorrectable fatal" },
-	{ BIT(9), "Platform Correctable" },
-	{ BIT(10), "Platform Uncorrectable non-fatal" },
-	{ BIT(11), "Platform Uncorrectable fatal"},
-	{ BIT(12), "CXL.cache Protocol Correctable" },
-	{ BIT(13), "CXL.cache Protocol Uncorrectable non-fatal" },
-	{ BIT(14), "CXL.cache Protocol Uncorrectable fatal" },
-	{ BIT(15), "CXL.mem Protocol Correctable" },
-	{ BIT(16), "CXL.mem Protocol Uncorrectable non-fatal" },
-	{ BIT(17), "CXL.mem Protocol Uncorrectable fatal" },
-	{ BIT(31), "Vendor Defined Error Types" },
-};
-
-static int available_error_type_show(struct seq_file *m, void *v)
-{
-	int rc;
-	u32 error_type = 0;
-
-	rc = einj_get_available_error_type(&error_type);
-	if (rc)
-		return rc;
-	for (int pos = 0; pos < ARRAY_SIZE(einj_error_type_string); pos++)
-		if (error_type & einj_error_type_string[pos].mask)
-			seq_printf(m, "0x%08x\t%s\n", einj_error_type_string[pos].mask,
-				   einj_error_type_string[pos].str);
-
-	return 0;
-}
-
-DEFINE_SHOW_ATTRIBUTE(available_error_type);
-
-static int error_type_get(void *data, u64 *val)
-{
-	*val = error_type;
-
-	return 0;
-}
-
-static int error_type_set(void *data, u64 val)
-{
-	int rc;
-	u32 available_error_type = 0;
-	u32 tval, vendor;
-
-	/* Only low 32 bits for error type are valid */
-	if (val & GENMASK_ULL(63, 32))
-		return -EINVAL;
-
-	/*
-	 * Vendor defined types have 0x80000000 bit set, and
-	 * are not enumerated by ACPI_EINJ_GET_ERROR_TYPE
-	 */
-	vendor = val & ACPI5_VENDOR_BIT;
-	tval = val & 0x7fffffff;
-
-	/* Only one error type can be specified */
-	if (tval & (tval - 1))
-		return -EINVAL;
-	if (!vendor) {
-		rc = einj_get_available_error_type(&available_error_type);
-		if (rc)
-			return rc;
-		if (!(val & available_error_type))
-			return -EINVAL;
-	}
-	error_type = val;
-
-	return 0;
-}
-
-DEFINE_DEBUGFS_ATTRIBUTE(error_type_fops, error_type_get, error_type_set,
-			 "0x%llx\n");
-
-static int error_inject_set(void *data, u64 val)
-{
-	if (!error_type)
-		return -EINVAL;
-
-	return einj_error_inject(error_type, error_flags, error_param1, error_param2,
-		error_param3, error_param4);
-}
-
-DEFINE_DEBUGFS_ATTRIBUTE(error_inject_fops, NULL, error_inject_set, "%llu\n");
-
-static int einj_check_table(struct acpi_table_einj *einj_tab)
-{
-	if ((einj_tab->header_length !=
-	     (sizeof(struct acpi_table_einj) - sizeof(einj_tab->header)))
-	    && (einj_tab->header_length != sizeof(struct acpi_table_einj)))
-		return -EINVAL;
-	if (einj_tab->header.length < sizeof(struct acpi_table_einj))
-		return -EINVAL;
-	if (einj_tab->entries !=
-	    (einj_tab->header.length - sizeof(struct acpi_table_einj)) /
-	    sizeof(struct acpi_einj_entry))
-		return -EINVAL;
-
-	return 0;
-}
-
-static int __init einj_init(void)
-{
-	int rc;
-	acpi_status status;
-	struct apei_exec_context ctx;
-
-	if (acpi_disabled) {
-		pr_info("ACPI disabled.\n");
-		return -ENODEV;
-	}
-
-	status = acpi_get_table(ACPI_SIG_EINJ, 0,
-				(struct acpi_table_header **)&einj_tab);
-	if (status == AE_NOT_FOUND) {
-		pr_warn("EINJ table not found.\n");
-		return -ENODEV;
-	} else if (ACPI_FAILURE(status)) {
-		pr_err("Failed to get EINJ table: %s\n",
-				acpi_format_exception(status));
-		return -EINVAL;
-	}
-
-	rc = einj_check_table(einj_tab);
-	if (rc) {
-		pr_warn(FW_BUG "Invalid EINJ table.\n");
-		goto err_put_table;
-	}
-
-	rc = -ENOMEM;
-	einj_debug_dir = debugfs_create_dir("einj", apei_get_debugfs_dir());
-
-	debugfs_create_file("available_error_type", S_IRUSR, einj_debug_dir,
-			    NULL, &available_error_type_fops);
-	debugfs_create_file_unsafe("error_type", 0600, einj_debug_dir,
-				   NULL, &error_type_fops);
-	debugfs_create_file_unsafe("error_inject", 0200, einj_debug_dir,
-				   NULL, &error_inject_fops);
-
-	apei_resources_init(&einj_resources);
-	einj_exec_ctx_init(&ctx);
-	rc = apei_exec_collect_resources(&ctx, &einj_resources);
-	if (rc) {
-		pr_err("Error collecting EINJ resources.\n");
-		goto err_fini;
-	}
-
-	rc = apei_resources_request(&einj_resources, "APEI EINJ");
-	if (rc) {
-		pr_err("Error requesting memory/port resources.\n");
-		goto err_fini;
-	}
-
-	rc = apei_exec_pre_map_gars(&ctx);
-	if (rc) {
-		pr_err("Error pre-mapping GARs.\n");
-		goto err_release;
-	}
-
-	einj_param = einj_get_parameter_address();
-	if ((param_extension || acpi5) && einj_param) {
-		debugfs_create_x32("flags", S_IRUSR | S_IWUSR, einj_debug_dir,
-				   &error_flags);
-		debugfs_create_x64("param1", S_IRUSR | S_IWUSR, einj_debug_dir,
-				   &error_param1);
-		debugfs_create_x64("param2", S_IRUSR | S_IWUSR, einj_debug_dir,
-				   &error_param2);
-		debugfs_create_x64("param3", S_IRUSR | S_IWUSR, einj_debug_dir,
-				   &error_param3);
-		debugfs_create_x64("param4", S_IRUSR | S_IWUSR, einj_debug_dir,
-				   &error_param4);
-		debugfs_create_x32("notrigger", S_IRUSR | S_IWUSR,
-				   einj_debug_dir, &notrigger);
-	}
-
-	if (vendor_dev[0]) {
-		vendor_blob.data = vendor_dev;
-		vendor_blob.size = strlen(vendor_dev);
-		debugfs_create_blob("vendor", S_IRUSR, einj_debug_dir,
-				    &vendor_blob);
-		debugfs_create_x32("vendor_flags", S_IRUSR | S_IWUSR,
-				   einj_debug_dir, &vendor_flags);
-	}
-
-	if (vendor_errors.size)
-		debugfs_create_blob("oem_error", 0600, einj_debug_dir,
-				    &vendor_errors);
-
-	pr_info("Error INJection is initialized.\n");
-
-	return 0;
-
-err_release:
-	apei_resources_release(&einj_resources);
-err_fini:
-	apei_resources_fini(&einj_resources);
-	debugfs_remove_recursive(einj_debug_dir);
-err_put_table:
-	acpi_put_table((struct acpi_table_header *)einj_tab);
-
-	return rc;
-}
-
-static void __exit einj_exit(void)
-{
-	struct apei_exec_context ctx;
-
-	if (einj_param) {
-		acpi_size size = (acpi5) ?
-			sizeof(struct set_error_type_with_address) :
-			sizeof(struct einj_parameter);
-
-		acpi_os_unmap_iomem(einj_param, size);
-		if (vendor_errors.size)
-			acpi_os_unmap_memory(vendor_errors.data, vendor_errors.size);
-	}
-	einj_exec_ctx_init(&ctx);
-	apei_exec_post_unmap_gars(&ctx);
-	apei_resources_release(&einj_resources);
-	apei_resources_fini(&einj_resources);
-	debugfs_remove_recursive(einj_debug_dir);
-	acpi_put_table((struct acpi_table_header *)einj_tab);
-}
-
-module_init(einj_init);
-module_exit(einj_exit);
-
-MODULE_AUTHOR("Huang Ying");
-MODULE_DESCRIPTION("APEI Error INJection support");
-MODULE_LICENSE("GPL");