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Merge branches 'acpica' and 'acpi-scan'

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* acpica:
  ACPI / osl: Remove deprecated acpi_get_table_with_size()/early_acpi_os_unmap_memory()
  ACPI / osl: Remove acpi_get_table_with_size()/early_acpi_os_unmap_memory() users
  ACPICA: Tables: Allow FADT to be customized with virtual address
  ACPICA: Tables: Back port acpi_get_table_with_size() and early_acpi_os_unmap_memory() from Linux kernel

* acpi-scan:
  ACPI: do not warn if _BQC does not exist
This commit is contained in:
Rafael J. Wysocki 2016-12-22 14:34:24 +01:00
commit c8e008e2a6
22 changed files with 228 additions and 129 deletions
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2
arch/arm64/include/asm/acpi.h
View File

@ -29,7 +29,7 @@
/* Basic configuration for ACPI */
#ifdef CONFIG_ACPI
/* ACPI table mapping after acpi_gbl_permanent_mmap is set */
/* ACPI table mapping after acpi_permanent_mmap is set */
static inline void __iomem *acpi_os_ioremap(acpi_physical_address phys,
acpi_size size)
{

7
arch/arm64/kernel/acpi.c
View File

@ -132,14 +132,13 @@ static int __init acpi_fadt_sanity_check(void)
struct acpi_table_header *table;
struct acpi_table_fadt *fadt;
acpi_status status;
acpi_size tbl_size;
int ret = 0;
/*
* FADT is required on arm64; retrieve it to check its presence
* and carry out revision and ACPI HW reduced compliancy tests
*/
status = acpi_get_table_with_size(ACPI_SIG_FADT, 0, &table, &tbl_size);
status = acpi_get_table(ACPI_SIG_FADT, 0, &table);
if (ACPI_FAILURE(status)) {
const char *msg = acpi_format_exception(status);
@ -170,10 +169,10 @@ static int __init acpi_fadt_sanity_check(void)
out:
/*
* acpi_get_table_with_size() creates FADT table mapping that
* acpi_get_table() creates FADT table mapping that
* should be released after parsing and before resuming boot
*/
early_acpi_os_unmap_memory(table, tbl_size);
acpi_put_table(table);
return ret;
}

6
drivers/acpi/acpica/actables.h
View File

@ -166,6 +166,12 @@ acpi_tb_install_table_with_override(struct acpi_table_desc *new_table_desc,
acpi_status acpi_tb_parse_root_table(acpi_physical_address rsdp_address);
acpi_status
acpi_tb_get_table(struct acpi_table_desc *table_desc,
struct acpi_table_header **out_table);
void acpi_tb_put_table(struct acpi_table_desc *table_desc);
/*
* tbxfload
*/

14
drivers/acpi/acpica/tbfadt.c
View File

@ -311,6 +311,8 @@ void acpi_tb_parse_fadt(void)
{
u32 length;
struct acpi_table_header *table;
struct acpi_table_desc *fadt_desc;
acpi_status status;
/*
* The FADT has multiple versions with different lengths,
@ -319,14 +321,12 @@ void acpi_tb_parse_fadt(void)
* Get a local copy of the FADT and convert it to a common format
* Map entire FADT, assumed to be smaller than one page.
*/
length = acpi_gbl_root_table_list.tables[acpi_gbl_fadt_index].length;
table =
acpi_os_map_memory(acpi_gbl_root_table_list.
tables[acpi_gbl_fadt_index].address, length);
if (!table) {
fadt_desc = &acpi_gbl_root_table_list.tables[acpi_gbl_fadt_index];
status = acpi_tb_get_table(fadt_desc, &table);
if (ACPI_FAILURE(status)) {
return;
}
length = fadt_desc->length;
/*
* Validate the FADT checksum before we copy the table. Ignore
@ -340,7 +340,7 @@ void acpi_tb_parse_fadt(void)
/* All done with the real FADT, unmap it */
acpi_os_unmap_memory(table, length);
acpi_tb_put_table(fadt_desc);
/* Obtain the DSDT and FACS tables via their addresses within the FADT */

85
drivers/acpi/acpica/tbutils.c
View File

@ -381,3 +381,88 @@ next_table:
acpi_os_unmap_memory(table, length);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_get_table
*
* PARAMETERS: table_desc - Table descriptor
* out_table - Where the pointer to the table is returned
*
* RETURN: Status and pointer to the requested table
*
* DESCRIPTION: Increase a reference to a table descriptor and return the
* validated table pointer.
* If the table descriptor is an entry of the root table list,
* this API must be invoked with ACPI_MTX_TABLES acquired.
*
******************************************************************************/
acpi_status
acpi_tb_get_table(struct acpi_table_desc *table_desc,
struct acpi_table_header **out_table)
{
acpi_status status;
ACPI_FUNCTION_TRACE(acpi_tb_get_table);
if (table_desc->validation_count == 0) {
/* Table need to be "VALIDATED" */
status = acpi_tb_validate_table(table_desc);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
table_desc->validation_count++;
if (table_desc->validation_count == 0) {
ACPI_ERROR((AE_INFO,
"Table %p, Validation count is zero after increment\n",
table_desc));
table_desc->validation_count--;
return_ACPI_STATUS(AE_LIMIT);
}
*out_table = table_desc->pointer;
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_put_table
*
* PARAMETERS: table_desc - Table descriptor
*
* RETURN: None
*
* DESCRIPTION: Decrease a reference to a table descriptor and release the
* validated table pointer if no references.
* If the table descriptor is an entry of the root table list,
* this API must be invoked with ACPI_MTX_TABLES acquired.
*
******************************************************************************/
void acpi_tb_put_table(struct acpi_table_desc *table_desc)
{
ACPI_FUNCTION_TRACE(acpi_tb_put_table);
if (table_desc->validation_count == 0) {
ACPI_WARNING((AE_INFO,
"Table %p, Validation count is zero before decrement\n",
table_desc));
return_VOID;
}
table_desc->validation_count--;
if (table_desc->validation_count == 0) {
/* Table need to be "INVALIDATED" */
acpi_tb_invalidate_table(table_desc);
}
return_VOID;
}

138
drivers/acpi/acpica/tbxface.c
View File

@ -282,7 +282,7 @@ ACPI_EXPORT_SYMBOL(acpi_get_table_header)
/*******************************************************************************
*
* FUNCTION: acpi_get_table_with_size
* FUNCTION: acpi_get_table
*
* PARAMETERS: signature - ACPI signature of needed table
* instance - Which instance (for SSDTs)
@ -292,16 +292,21 @@ ACPI_EXPORT_SYMBOL(acpi_get_table_header)
*
* DESCRIPTION: Finds and verifies an ACPI table. Table must be in the
* RSDT/XSDT.
* Note that an early stage acpi_get_table() call must be paired
* with an early stage acpi_put_table() call. otherwise the table
* pointer mapped by the early stage mapping implementation may be
* erroneously unmapped by the late stage unmapping implementation
* in an acpi_put_table() invoked during the late stage.
*
******************************************************************************/
acpi_status
acpi_get_table_with_size(char *signature,
u32 instance, struct acpi_table_header **out_table,
acpi_size *tbl_size)
acpi_get_table(char *signature,
u32 instance, struct acpi_table_header ** out_table)
{
u32 i;
u32 j;
acpi_status status;
acpi_status status = AE_NOT_FOUND;
struct acpi_table_desc *table_desc;
/* Parameter validation */
@ -309,13 +314,22 @@ acpi_get_table_with_size(char *signature,
return (AE_BAD_PARAMETER);
}
/*
* Note that the following line is required by some OSPMs, they only
* check if the returned table is NULL instead of the returned status
* to determined if this function is succeeded.
*/
*out_table = NULL;
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
/* Walk the root table list */
for (i = 0, j = 0; i < acpi_gbl_root_table_list.current_table_count;
i++) {
if (!ACPI_COMPARE_NAME
(&(acpi_gbl_root_table_list.tables[i].signature),
signature)) {
table_desc = &acpi_gbl_root_table_list.tables[i];
if (!ACPI_COMPARE_NAME(&table_desc->signature, signature)) {
continue;
}
@ -323,43 +337,65 @@ acpi_get_table_with_size(char *signature,
continue;
}
status =
acpi_tb_validate_table(&acpi_gbl_root_table_list.tables[i]);
if (ACPI_SUCCESS(status)) {
*out_table = acpi_gbl_root_table_list.tables[i].pointer;
*tbl_size = acpi_gbl_root_table_list.tables[i].length;
}
if (!acpi_gbl_permanent_mmap) {
acpi_gbl_root_table_list.tables[i].pointer = NULL;
}
return (status);
status = acpi_tb_get_table(table_desc, out_table);
break;
}
return (AE_NOT_FOUND);
}
ACPI_EXPORT_SYMBOL(acpi_get_table_with_size)
acpi_status
acpi_get_table(char *signature,
u32 instance, struct acpi_table_header **out_table)
{
acpi_size tbl_size;
return acpi_get_table_with_size(signature,
instance, out_table, &tbl_size);
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return (status);
}
ACPI_EXPORT_SYMBOL(acpi_get_table)
/*******************************************************************************
*
* FUNCTION: acpi_put_table
*
* PARAMETERS: table - The pointer to the table
*
* RETURN: None
*
* DESCRIPTION: Release a table returned by acpi_get_table() and its clones.
* Note that it is not safe if this function was invoked after an
* uninstallation happened to the original table descriptor.
* Currently there is no OSPMs' requirement to handle such
* situations.
*
******************************************************************************/
void acpi_put_table(struct acpi_table_header *table)
{
u32 i;
struct acpi_table_desc *table_desc;
ACPI_FUNCTION_TRACE(acpi_put_table);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
/* Walk the root table list */
for (i = 0; i < acpi_gbl_root_table_list.current_table_count; i++) {
table_desc = &acpi_gbl_root_table_list.tables[i];
if (table_desc->pointer != table) {
continue;
}
acpi_tb_put_table(table_desc);
break;
}
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_VOID;
}
ACPI_EXPORT_SYMBOL(acpi_put_table)
/*******************************************************************************
*
* FUNCTION: acpi_get_table_by_index
*
* PARAMETERS: table_index - Table index
* table - Where the pointer to the table is returned
* out_table - Where the pointer to the table is returned
*
* RETURN: Status and pointer to the requested table
*
@ -368,7 +404,7 @@ ACPI_EXPORT_SYMBOL(acpi_get_table)
*
******************************************************************************/
acpi_status
acpi_get_table_by_index(u32 table_index, struct acpi_table_header **table)
acpi_get_table_by_index(u32 table_index, struct acpi_table_header **out_table)
{
acpi_status status;
@ -376,35 +412,33 @@ acpi_get_table_by_index(u32 table_index, struct acpi_table_header **table)
/* Parameter validation */
if (!table) {
if (!out_table) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/*
* Note that the following line is required by some OSPMs, they only
* check if the returned table is NULL instead of the returned status
* to determined if this function is succeeded.
*/
*out_table = NULL;
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
/* Validate index */
if (table_index >= acpi_gbl_root_table_list.current_table_count) {
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(AE_BAD_PARAMETER);
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
}
if (!acpi_gbl_root_table_list.tables[table_index].pointer) {
status =
acpi_tb_get_table(&acpi_gbl_root_table_list.tables[table_index],
out_table);
/* Table is not mapped, map it */
status =
acpi_tb_validate_table(&acpi_gbl_root_table_list.
tables[table_index]);
if (ACPI_FAILURE(status)) {
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(status);
}
}
*table = acpi_gbl_root_table_list.tables[table_index].pointer;
unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(AE_OK);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_get_table_by_index)

2
drivers/acpi/bus.c
View File

@ -974,7 +974,7 @@ void __init acpi_early_init(void)
if (!acpi_strict)
acpi_gbl_enable_interpreter_slack = TRUE;
acpi_gbl_permanent_mmap = 1;
acpi_permanent_mmap = true;
/*
* If the machine falls into the DMI check table,

3
drivers/acpi/nfit/core.c
View File

@ -2806,12 +2806,13 @@ static int acpi_nfit_add(struct acpi_device *adev)
acpi_size sz;
int rc = 0;
status = acpi_get_table_with_size(ACPI_SIG_NFIT, 0, &tbl, &sz);
status = acpi_get_table(ACPI_SIG_NFIT, 0, &tbl);
if (ACPI_FAILURE(status)) {
/* This is ok, we could have an nvdimm hotplugged later */
dev_dbg(dev, "failed to find NFIT at startup\n");
return 0;
}
sz = tbl->length;
acpi_desc = devm_kzalloc(dev, sizeof(*acpi_desc), GFP_KERNEL);
if (!acpi_desc)

15
drivers/acpi/osl.c
View File

@ -76,6 +76,7 @@ static struct workqueue_struct *kacpi_notify_wq;
static struct workqueue_struct *kacpi_hotplug_wq;
static bool acpi_os_initialized;
unsigned int acpi_sci_irq = INVALID_ACPI_IRQ;
bool acpi_permanent_mmap = false;
/*
* This list of permanent mappings is for memory that may be accessed from
@ -306,7 +307,7 @@ static void acpi_unmap(acpi_physical_address pg_off, void __iomem *vaddr)
* virtual address). If not found, map it, add it to that list and return a
* pointer to it.
*
* During early init (when acpi_gbl_permanent_mmap has not been set yet) this
* During early init (when acpi_permanent_mmap has not been set yet) this
* routine simply calls __acpi_map_table() to get the job done.
*/
void __iomem *__ref
@ -322,7 +323,7 @@ acpi_os_map_iomem(acpi_physical_address phys, acpi_size size)
return NULL;
}
if (!acpi_gbl_permanent_mmap)
if (!acpi_permanent_mmap)
return __acpi_map_table((unsigned long)phys, size);
mutex_lock(&acpi_ioremap_lock);
@ -392,7 +393,7 @@ static void acpi_os_map_cleanup(struct acpi_ioremap *map)
* mappings, drop a reference to it and unmap it if there are no more active
* references to it.
*
* During early init (when acpi_gbl_permanent_mmap has not been set yet) this
* During early init (when acpi_permanent_mmap has not been set yet) this
* routine simply calls __acpi_unmap_table() to get the job done. Since
* __acpi_unmap_table() is an __init function, the __ref annotation is needed
* here.
@ -401,7 +402,7 @@ void __ref acpi_os_unmap_iomem(void __iomem *virt, acpi_size size)
{
struct acpi_ioremap *map;
if (!acpi_gbl_permanent_mmap) {
if (!acpi_permanent_mmap) {
__acpi_unmap_table(virt, size);
return;
}
@ -426,12 +427,6 @@ void __ref acpi_os_unmap_memory(void *virt, acpi_size size)
}
EXPORT_SYMBOL_GPL(acpi_os_unmap_memory);
void __init early_acpi_os_unmap_memory(void __iomem *virt, acpi_size size)
{
if (!acpi_gbl_permanent_mmap)
__acpi_unmap_table(virt, size);
}
int acpi_os_map_generic_address(struct acpi_generic_address *gas)
{
u64 addr;

8
drivers/acpi/processor_core.c
View File

@ -154,18 +154,16 @@ static phys_cpuid_t map_madt_entry(struct acpi_table_madt *madt,
phys_cpuid_t __init acpi_map_madt_entry(u32 acpi_id)
{
struct acpi_table_madt *madt = NULL;
acpi_size tbl_size;
phys_cpuid_t rv;
acpi_get_table_with_size(ACPI_SIG_MADT, 0,
(struct acpi_table_header **)&madt,
&tbl_size);
acpi_get_table(ACPI_SIG_MADT, 0,
(struct acpi_table_header **)&madt);
if (!madt)
return PHYS_CPUID_INVALID;
rv = map_madt_entry(madt, 1, acpi_id, true);
early_acpi_os_unmap_memory(madt, tbl_size);
acpi_put_table((struct acpi_table_header *)madt);
return rv;
}

3
drivers/acpi/scan.c
View File

@ -1119,9 +1119,6 @@ acpi_backlight_cap_match(acpi_handle handle, u32 level, void *context,
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found generic backlight "
"support\n"));
*cap |= ACPI_VIDEO_BACKLIGHT;
if (!acpi_has_method(handle, "_BQC"))
printk(KERN_WARNING FW_BUG PREFIX "No _BQC method, "
"cannot determine initial brightness\n");
/* We have backlight support, no need to scan further */
return AE_CTRL_TERMINATE;
}

8
drivers/acpi/spcr.c
View File

@ -33,7 +33,6 @@ int __init parse_spcr(bool earlycon)
{
static char opts[64];
struct acpi_table_spcr *table;
acpi_size table_size;
acpi_status status;
char *uart;
char *iotype;
@ -43,9 +42,8 @@ int __init parse_spcr(bool earlycon)
if (acpi_disabled)
return -ENODEV;
status = acpi_get_table_with_size(ACPI_SIG_SPCR, 0,
(struct acpi_table_header **)&table,
&table_size);
status = acpi_get_table(ACPI_SIG_SPCR, 0,
(struct acpi_table_header **)&table);
if (ACPI_FAILURE(status))
return -ENOENT;
@ -106,6 +104,6 @@ int __init parse_spcr(bool earlycon)
err = add_preferred_console(uart, 0, opts + strlen(uart) + 1);
done:
early_acpi_os_unmap_memory((void __iomem *)table, table_size);
acpi_put_table((struct acpi_table_header *)table);
return err;
}

17
drivers/acpi/tables.c
View File

@ -333,7 +333,6 @@ acpi_table_parse_entries_array(char *id,
unsigned int max_entries)
{
struct acpi_table_header *table_header = NULL;
acpi_size tbl_size;
int count;
u32 instance = 0;
@ -346,7 +345,7 @@ acpi_table_parse_entries_array(char *id,
if (!strncmp(id, ACPI_SIG_MADT, 4))
instance = acpi_apic_instance;
acpi_get_table_with_size(id, instance, &table_header, &tbl_size);
acpi_get_table(id, instance, &table_header);
if (!table_header) {
pr_warn("%4.4s not present\n", id);
return -ENODEV;
@ -355,7 +354,7 @@ acpi_table_parse_entries_array(char *id,
count = acpi_parse_entries_array(id, table_size, table_header,
proc, proc_num, max_entries);
early_acpi_os_unmap_memory((char *)table_header, tbl_size);
acpi_put_table(table_header);
return count;
}
@ -397,7 +396,6 @@ acpi_table_parse_madt(enum acpi_madt_type id,
int __init acpi_table_parse(char *id, acpi_tbl_table_handler handler)
{
struct acpi_table_header *table = NULL;
acpi_size tbl_size;
if (acpi_disabled)
return -ENODEV;
@ -406,13 +404,13 @@ int __init acpi_table_parse(char *id, acpi_tbl_table_handler handler)
return -EINVAL;
if (strncmp(id, ACPI_SIG_MADT, 4) == 0)
acpi_get_table_with_size(id, acpi_apic_instance, &table, &tbl_size);
acpi_get_table(id, acpi_apic_instance, &table);
else
acpi_get_table_with_size(id, 0, &table, &tbl_size);
acpi_get_table(id, 0, &table);
if (table) {
handler(table);
early_acpi_os_unmap_memory(table, tbl_size);
acpi_put_table(table);
return 0;
} else
return -ENODEV;
@ -426,16 +424,15 @@ int __init acpi_table_parse(char *id, acpi_tbl_table_handler handler)
static void __init check_multiple_madt(void)
{
struct acpi_table_header *table = NULL;
acpi_size tbl_size;
acpi_get_table_with_size(ACPI_SIG_MADT, 2, &table, &tbl_size);
acpi_get_table(ACPI_SIG_MADT, 2, &table);
if (table) {
pr_warn("BIOS bug: multiple APIC/MADT found, using %d\n",
acpi_apic_instance);
pr_warn("If \"acpi_apic_instance=%d\" works better, "
"notify linux-acpi@vger.kernel.org\n",
acpi_apic_instance ? 0 : 2);
early_acpi_os_unmap_memory(table, tbl_size);
acpi_put_table(table);
} else
acpi_apic_instance = 0;

3
drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
View File

@ -305,8 +305,9 @@ static bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev)
GOP_VBIOS_CONTENT *vbios;
VFCT_IMAGE_HEADER *vhdr;
if (!ACPI_SUCCESS(acpi_get_table_with_size("VFCT", 1, &hdr, &tbl_size)))
if (!ACPI_SUCCESS(acpi_get_table("VFCT", 1, &hdr)))
return false;
tbl_size = hdr->length;
if (tbl_size < sizeof(UEFI_ACPI_VFCT)) {
DRM_ERROR("ACPI VFCT table present but broken (too short #1)\n");
goto out_unmap;

3
drivers/gpu/drm/radeon/radeon_bios.c
View File

@ -603,8 +603,9 @@ static bool radeon_acpi_vfct_bios(struct radeon_device *rdev)
GOP_VBIOS_CONTENT *vbios;
VFCT_IMAGE_HEADER *vhdr;
if (!ACPI_SUCCESS(acpi_get_table_with_size("VFCT", 1, &hdr, &tbl_size)))
if (!ACPI_SUCCESS(acpi_get_table("VFCT", 1, &hdr)))
return false;
tbl_size = hdr->length;
if (tbl_size < sizeof(UEFI_ACPI_VFCT)) {
DRM_ERROR("ACPI VFCT table present but broken (too short #1)\n");
goto out_unmap;

10
drivers/iommu/amd_iommu_init.c
View File

@ -2207,14 +2207,13 @@ static void __init free_dma_resources(void)
static int __init early_amd_iommu_init(void)
{
struct acpi_table_header *ivrs_base;
acpi_size ivrs_size;
acpi_status status;
int i, remap_cache_sz, ret = 0;
if (!amd_iommu_detected)
return -ENODEV;
status = acpi_get_table_with_size("IVRS", 0, &ivrs_base, &ivrs_size);
status = acpi_get_table("IVRS", 0, &ivrs_base);
if (status == AE_NOT_FOUND)
return -ENODEV;
else if (ACPI_FAILURE(status)) {
@ -2334,7 +2333,7 @@ static int __init early_amd_iommu_init(void)
out:
/* Don't leak any ACPI memory */
early_acpi_os_unmap_memory((char __iomem *)ivrs_base, ivrs_size);
acpi_put_table(ivrs_base);
ivrs_base = NULL;
return ret;
@ -2358,10 +2357,9 @@ out:
static bool detect_ivrs(void)
{
struct acpi_table_header *ivrs_base;
acpi_size ivrs_size;
acpi_status status;
status = acpi_get_table_with_size("IVRS", 0, &ivrs_base, &ivrs_size);
status = acpi_get_table("IVRS", 0, &ivrs_base);
if (status == AE_NOT_FOUND)
return false;
else if (ACPI_FAILURE(status)) {
@ -2370,7 +2368,7 @@ static bool detect_ivrs(void)
return false;
}
early_acpi_os_unmap_memory((char __iomem *)ivrs_base, ivrs_size);
acpi_put_table(ivrs_base);
/* Make sure ACS will be enabled during PCI probe */
pci_request_acs();

7
drivers/iommu/dmar.c
View File

@ -68,7 +68,6 @@ DECLARE_RWSEM(dmar_global_lock);
LIST_HEAD(dmar_drhd_units);
struct acpi_table_header * __initdata dmar_tbl;
static acpi_size dmar_tbl_size;
static int dmar_dev_scope_status = 1;
static unsigned long dmar_seq_ids[BITS_TO_LONGS(DMAR_UNITS_SUPPORTED)];
@ -543,9 +542,7 @@ static int __init dmar_table_detect(void)
acpi_status status = AE_OK;
/* if we could find DMAR table, then there are DMAR devices */
status = acpi_get_table_with_size(ACPI_SIG_DMAR, 0,
(struct acpi_table_header **)&dmar_tbl,
&dmar_tbl_size);
status = acpi_get_table(ACPI_SIG_DMAR, 0, &dmar_tbl);
if (ACPI_SUCCESS(status) && !dmar_tbl) {
pr_warn("Unable to map DMAR\n");
@ -906,7 +903,7 @@ int __init detect_intel_iommu(void)
x86_init.iommu.iommu_init = intel_iommu_init;
#endif
early_acpi_os_unmap_memory((void __iomem *)dmar_tbl, dmar_tbl_size);
acpi_put_table(dmar_tbl);
dmar_tbl = NULL;
up_write(&dmar_global_lock);

5
drivers/mailbox/pcc.c
View File

@ -447,7 +447,6 @@ static int pcc_parse_subspace_irq(int id,
*/
static int __init acpi_pcc_probe(void)
{
acpi_size pcct_tbl_header_size;
struct acpi_table_header *pcct_tbl;
struct acpi_subtable_header *pcct_entry;
struct acpi_table_pcct *acpi_pcct_tbl;
@ -456,9 +455,7 @@ static int __init acpi_pcc_probe(void)
acpi_status status = AE_OK;
/* Search for PCCT */
status = acpi_get_table_with_size(ACPI_SIG_PCCT, 0,
&pcct_tbl,
&pcct_tbl_header_size);
status = acpi_get_table(ACPI_SIG_PCCT, 0, &pcct_tbl);
if (ACPI_FAILURE(status) || !pcct_tbl) {
pr_warn("PCCT header not found.\n");

2
include/acpi/acpi_io.h
View File

@ -13,6 +13,8 @@ static inline void __iomem *acpi_os_ioremap(acpi_physical_address phys,
}
#endif
extern bool acpi_permanent_mmap;
void __iomem *__ref
acpi_os_map_iomem(acpi_physical_address phys, acpi_size size);
void __ref acpi_os_unmap_iomem(void __iomem *virt, acpi_size size);

17
include/acpi/acpixf.h
View File

@ -513,10 +513,12 @@ ACPI_EXTERNAL_RETURN_STATUS(acpi_status
acpi_get_table(acpi_string signature, u32 instance,
struct acpi_table_header
**out_table))
ACPI_EXTERNAL_RETURN_VOID(void acpi_put_table(struct acpi_table_header *table))
ACPI_EXTERNAL_RETURN_STATUS(acpi_status
acpi_get_table_by_index(u32 table_index,
struct acpi_table_header
**out_table))
acpi_get_table_by_index(u32 table_index,
struct acpi_table_header
**out_table))
ACPI_EXTERNAL_RETURN_STATUS(acpi_status
acpi_install_table_handler(acpi_table_handler
handler, void *context))
@ -965,15 +967,6 @@ void acpi_terminate_debugger(void);
/*
* Divergences
*/
ACPI_GLOBAL(u8, acpi_gbl_permanent_mmap);
ACPI_EXTERNAL_RETURN_STATUS(acpi_status
acpi_get_table_with_size(acpi_string signature,
u32 instance,
struct acpi_table_header
**out_table,
acpi_size *tbl_size))
ACPI_EXTERNAL_RETURN_STATUS(acpi_status
acpi_get_data_full(acpi_handle object,
acpi_object_handler handler,

1
include/acpi/actbl.h
View File

@ -371,6 +371,7 @@ struct acpi_table_desc {
union acpi_name_union signature;
acpi_owner_id owner_id;
u8 flags;
u16 validation_count;
};
/* Masks for Flags field above */

1
include/acpi/platform/aclinuxex.h
View File

@ -142,7 +142,6 @@ static inline void acpi_os_terminate_command_signals(void)
/*
* OSL interfaces added by Linux
*/
void early_acpi_os_unmap_memory(void __iomem * virt, acpi_size size);
#endif /* __KERNEL__ */