renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-14 08:13:56 +08:00
Code

Merge branch 'acpica'

Browse Source 
* acpica:
  ACPICA: Update version to 20170831
  ACPICA: Update acpi_get_timer for 64-bit interface to acpi_hw_read
  ACPICA: String conversions: Update to add new behaviors
  ACPICA: String conversions: Cleanup/format comments. No functional changes
  ACPICA: Restructure/cleanup all string-to-integer conversion functions
  ACPICA: Header support for the PDTT ACPI table
  ACPICA: acpiexec: Add testability of deferred table verification
  ACPICA: Hardware: Enable 64-bit support of hardware accesses
This commit is contained in:
Rafael J. Wysocki 2017-11-13 01:36:58 +01:00
commit 60764eb379
25 changed files with 839 additions and 417 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/acpi/acpica/Makefile
View File

@ -178,6 +178,7 @@ acpi-y += \
utresrc.o \
utstate.o \
utstring.o \
utstrsuppt.o \
utstrtoul64.o \
utxface.o \
utxfinit.o \

4
drivers/acpi/acpica/achware.h
View File

@ -66,9 +66,9 @@ acpi_status
acpi_hw_validate_register(struct acpi_generic_address *reg,
u8 max_bit_width, u64 *address);
acpi_status acpi_hw_read(u32 *value, struct acpi_generic_address *reg);
acpi_status acpi_hw_read(u64 *value, struct acpi_generic_address *reg);
acpi_status acpi_hw_write(u32 value, struct acpi_generic_address *reg);
acpi_status acpi_hw_write(u64 value, struct acpi_generic_address *reg);
struct acpi_bit_register_info *acpi_hw_get_bit_register_info(u32 register_id);

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

@ -101,7 +101,8 @@ typedef const struct acpi_exdump_info {
*/
acpi_status
acpi_ex_convert_to_integer(union acpi_operand_object *obj_desc,
union acpi_operand_object **result_desc, u32 flags);
union acpi_operand_object **result_desc,
u32 implicit_conversion);
acpi_status
acpi_ex_convert_to_buffer(union acpi_operand_object *obj_desc,
@ -424,9 +425,6 @@ acpi_ex_store_object_to_node(union acpi_operand_object *source_desc,
struct acpi_walk_state *walk_state,
u8 implicit_conversion);
#define ACPI_IMPLICIT_CONVERSION TRUE
#define ACPI_NO_IMPLICIT_CONVERSION FALSE
/*
* exstoren - resolve/store object
*/

33
drivers/acpi/acpica/acutils.h
View File

@ -141,6 +141,11 @@ extern const char *acpi_gbl_ptyp_decode[];
#define ACPI_MSG_SUFFIX \
acpi_os_printf (" (%8.8X/%s-%u)\n", ACPI_CA_VERSION, module_name, line_number)
/* Flags to indicate implicit or explicit string-to-integer conversion */
#define ACPI_IMPLICIT_CONVERSION TRUE
#define ACPI_NO_IMPLICIT_CONVERSION FALSE
/* Types for Resource descriptor entries */
#define ACPI_INVALID_RESOURCE 0
@ -197,15 +202,31 @@ void acpi_ut_strlwr(char *src_string);
int acpi_ut_stricmp(char *string1, char *string2);
acpi_status acpi_ut_strtoul64(char *string, u32 flags, u64 *ret_integer);
/*
* utstrsuppt - string-to-integer conversion support functions
*/
acpi_status acpi_ut_convert_octal_string(char *string, u64 *return_value);
acpi_status acpi_ut_convert_decimal_string(char *string, u64 *return_value_ptr);
acpi_status acpi_ut_convert_hex_string(char *string, u64 *return_value_ptr);
char acpi_ut_remove_whitespace(char **string);
char acpi_ut_remove_leading_zeros(char **string);
u8 acpi_ut_detect_hex_prefix(char **string);
u8 acpi_ut_detect_octal_prefix(char **string);
/*
* Values for Flags above
* Note: LIMIT values correspond to acpi_gbl_integer_byte_width values (4/8)
* utstrtoul64 - string-to-integer conversion functions
*/
#define ACPI_STRTOUL_32BIT 0x04 /* 4 bytes */
#define ACPI_STRTOUL_64BIT 0x08 /* 8 bytes */
#define ACPI_STRTOUL_BASE16 0x10 /* Default: Base10/16 */
acpi_status acpi_ut_strtoul64(char *string, u64 *ret_integer);
u64 acpi_ut_explicit_strtoul64(char *string);
u64 acpi_ut_implicit_strtoul64(char *string);
/*
* utglobal - Global data structures and procedures

5
drivers/acpi/acpica/dbconvert.c
View File

@ -277,10 +277,7 @@ acpi_db_convert_to_object(acpi_object_type type,
default:
object->type = ACPI_TYPE_INTEGER;
status = acpi_ut_strtoul64(string,
(acpi_gbl_integer_byte_width |
ACPI_STRTOUL_BASE16),
&object->integer.value);
status = acpi_ut_strtoul64(string, &object->integer.value);
break;
}

2
drivers/acpi/acpica/dswexec.c
View File

@ -134,7 +134,7 @@ acpi_ds_get_predicate_value(struct acpi_walk_state *walk_state,
* object. Implicitly convert the argument if necessary.
*/
status = acpi_ex_convert_to_integer(obj_desc, &local_obj_desc,
ACPI_STRTOUL_BASE16);
ACPI_IMPLICIT_CONVERSION);
if (ACPI_FAILURE(status)) {
goto cleanup;
}

6
drivers/acpi/acpica/evgpe.c
View File

@ -390,8 +390,8 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info *gpe_xrupt_list)
struct acpi_gpe_handler_info *gpe_handler_info;
u32 int_status = ACPI_INTERRUPT_NOT_HANDLED;
u8 enabled_status_byte;
u32 status_reg;
u32 enable_reg;
u64 status_reg;
u64 enable_reg;
acpi_cpu_flags flags;
u32 i;
u32 j;
@ -472,7 +472,7 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info *gpe_xrupt_list)
gpe_register_info->base_gpe_number,
gpe_register_info->base_gpe_number +
(ACPI_GPE_REGISTER_WIDTH - 1),
status_reg, enable_reg,
(u32)status_reg, (u32)enable_reg,
gpe_register_info->enable_for_run,
gpe_register_info->enable_for_wake));

2
drivers/acpi/acpica/exconcat.c
View File

@ -156,7 +156,7 @@ acpi_ex_do_concatenate(union acpi_operand_object *operand0,
status =
acpi_ex_convert_to_integer(local_operand1, &temp_operand1,
ACPI_STRTOUL_BASE16);
ACPI_IMPLICIT_CONVERSION);
break;
case ACPI_TYPE_BUFFER:

30
drivers/acpi/acpica/exconvrt.c
View File

@ -57,10 +57,10 @@ acpi_ex_convert_to_ascii(u64 integer, u16 base, u8 *string, u8 max_length);
*
* FUNCTION: acpi_ex_convert_to_integer
*
* PARAMETERS: obj_desc - Object to be converted. Must be an
* Integer, Buffer, or String
* result_desc - Where the new Integer object is returned
* flags - Used for string conversion
* PARAMETERS: obj_desc - Object to be converted. Must be an
* Integer, Buffer, or String
* result_desc - Where the new Integer object is returned
* implicit_conversion - Used for string conversion
*
* RETURN: Status
*
@ -70,14 +70,14 @@ acpi_ex_convert_to_ascii(u64 integer, u16 base, u8 *string, u8 max_length);
acpi_status
acpi_ex_convert_to_integer(union acpi_operand_object *obj_desc,
union acpi_operand_object **result_desc, u32 flags)
union acpi_operand_object **result_desc,
u32 implicit_conversion)
{
union acpi_operand_object *return_desc;
u8 *pointer;
u64 result;
u32 i;
u32 count;
acpi_status status;
ACPI_FUNCTION_TRACE_PTR(ex_convert_to_integer, obj_desc);
@ -123,12 +123,18 @@ acpi_ex_convert_to_integer(union acpi_operand_object *obj_desc,
* hexadecimal as per the ACPI specification. The only exception (as
* of ACPI 3.0) is that the to_integer() operator allows both decimal
* and hexadecimal strings (hex prefixed with "0x").
*
* Explicit conversion is used only by to_integer.
* All other string-to-integer conversions are implicit conversions.
*/
status = acpi_ut_strtoul64(ACPI_CAST_PTR(char, pointer),
(acpi_gbl_integer_byte_width |
flags), &result);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
if (implicit_conversion) {
result =
acpi_ut_implicit_strtoul64(ACPI_CAST_PTR
(char, pointer));
} else {
result =
acpi_ut_explicit_strtoul64(ACPI_CAST_PTR
(char, pointer));
}
break;
@ -631,7 +637,7 @@ acpi_ex_convert_to_target_type(acpi_object_type destination_type,
*/
status =
acpi_ex_convert_to_integer(source_desc, result_desc,
ACPI_STRTOUL_BASE16);
ACPI_IMPLICIT_CONVERSION);
break;
case ACPI_TYPE_STRING:

2
drivers/acpi/acpica/exmisc.c
View File

@ -330,7 +330,7 @@ acpi_ex_do_logical_op(u16 opcode,
case ACPI_TYPE_INTEGER:
status = acpi_ex_convert_to_integer(operand1, &local_operand1,
ACPI_STRTOUL_BASE16);
ACPI_IMPLICIT_CONVERSION);
break;
case ACPI_TYPE_STRING:

2
drivers/acpi/acpica/exresop.c
View File

@ -415,7 +415,7 @@ acpi_ex_resolve_operands(u16 opcode,
* Known as "Implicit Source Operand Conversion"
*/
status = acpi_ex_convert_to_integer(obj_desc, stack_ptr,
ACPI_STRTOUL_BASE16);
ACPI_IMPLICIT_CONVERSION);
if (ACPI_FAILURE(status)) {
if (status == AE_TYPE) {
ACPI_ERROR((AE_INFO,

4
drivers/acpi/acpica/hwgpe.c
View File

@ -99,7 +99,7 @@ acpi_hw_low_set_gpe(struct acpi_gpe_event_info *gpe_event_info, u32 action)
{
struct acpi_gpe_register_info *gpe_register_info;
acpi_status status = AE_OK;
u32 enable_mask;
u64 enable_mask;
u32 register_bit;
ACPI_FUNCTION_ENTRY();
@ -214,7 +214,7 @@ acpi_status
acpi_hw_get_gpe_status(struct acpi_gpe_event_info *gpe_event_info,
acpi_event_status *event_status)
{
u32 in_byte;
u64 in_byte;
u32 register_bit;
struct acpi_gpe_register_info *gpe_register_info;
acpi_event_status local_event_status = 0;

72
drivers/acpi/acpica/hwregs.c
View File

@ -220,16 +220,15 @@ acpi_hw_validate_register(struct acpi_generic_address *reg,
*
* RETURN: Status
*
* DESCRIPTION: Read from either memory or IO space. This is a 32-bit max
* version of acpi_read, used internally since the overhead of
* 64-bit values is not needed.
* DESCRIPTION: Read from either memory or IO space. This is a 64-bit max
* version of acpi_read.
*
* LIMITATIONS: <These limitations also apply to acpi_hw_write>
* space_ID must be system_memory or system_IO.
*
******************************************************************************/
acpi_status acpi_hw_read(u32 *value, struct acpi_generic_address *reg)
acpi_status acpi_hw_read(u64 *value, struct acpi_generic_address *reg)
{
u64 address;
u8 access_width;
@ -244,17 +243,17 @@ acpi_status acpi_hw_read(u32 *value, struct acpi_generic_address *reg)
/* Validate contents of the GAS register */
status = acpi_hw_validate_register(reg, 32, &address);
status = acpi_hw_validate_register(reg, 64, &address);
if (ACPI_FAILURE(status)) {
return (status);
}
/*
* Initialize entire 32-bit return value to zero, convert access_width
* Initialize entire 64-bit return value to zero, convert access_width
* into number of bits based
*/
*value = 0;
access_width = acpi_hw_get_access_bit_width(address, reg, 32);
access_width = acpi_hw_get_access_bit_width(address, reg, 64);
bit_width = reg->bit_offset + reg->bit_width;
bit_offset = reg->bit_offset;
@ -265,7 +264,7 @@ acpi_status acpi_hw_read(u32 *value, struct acpi_generic_address *reg)
index = 0;
while (bit_width) {
if (bit_offset >= access_width) {
value32 = 0;
value64 = 0;
bit_offset -= access_width;
} else {
if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
@ -276,7 +275,6 @@ acpi_status acpi_hw_read(u32 *value, struct acpi_generic_address *reg)
ACPI_DIV_8
(access_width),
&value64, access_width);
value32 = (u32)value64;
} else { /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */
status = acpi_hw_read_port((acpi_io_address)
@ -286,15 +284,16 @@ acpi_status acpi_hw_read(u32 *value, struct acpi_generic_address *reg)
(access_width),
&value32,
access_width);
value64 = (u64)value32;
}
}
/*
* Use offset style bit writes because "Index * AccessWidth" is
* ensured to be less than 32-bits by acpi_hw_validate_register().
* ensured to be less than 64-bits by acpi_hw_validate_register().
*/
ACPI_SET_BITS(value, index * access_width,
ACPI_MASK_BITS_ABOVE_32(access_width), value32);
ACPI_MASK_BITS_ABOVE_64(access_width), value64);
bit_width -=
bit_width > access_width ? access_width : bit_width;
@ -302,8 +301,9 @@ acpi_status acpi_hw_read(u32 *value, struct acpi_generic_address *reg)
}
ACPI_DEBUG_PRINT((ACPI_DB_IO,
"Read: %8.8X width %2d from %8.8X%8.8X (%s)\n",
*value, access_width, ACPI_FORMAT_UINT64(address),
"Read: %8.8X%8.8X width %2d from %8.8X%8.8X (%s)\n",
ACPI_FORMAT_UINT64(*value), access_width,
ACPI_FORMAT_UINT64(address),
acpi_ut_get_region_name(reg->space_id)));
return (status);
@ -318,20 +318,18 @@ acpi_status acpi_hw_read(u32 *value, struct acpi_generic_address *reg)
*
* RETURN: Status
*
* DESCRIPTION: Write to either memory or IO space. This is a 32-bit max
* version of acpi_write, used internally since the overhead of
* 64-bit values is not needed.
* DESCRIPTION: Write to either memory or IO space. This is a 64-bit max
* version of acpi_write.
*
******************************************************************************/
acpi_status acpi_hw_write(u32 value, struct acpi_generic_address *reg)
acpi_status acpi_hw_write(u64 value, struct acpi_generic_address *reg)
{
u64 address;
u8 access_width;
u32 bit_width;
u8 bit_offset;
u64 value64;
u32 value32;
u8 index;
acpi_status status;
@ -339,14 +337,14 @@ acpi_status acpi_hw_write(u32 value, struct acpi_generic_address *reg)
/* Validate contents of the GAS register */
status = acpi_hw_validate_register(reg, 32, &address);
status = acpi_hw_validate_register(reg, 64, &address);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Convert access_width into number of bits based */
access_width = acpi_hw_get_access_bit_width(address, reg, 32);
access_width = acpi_hw_get_access_bit_width(address, reg, 64);
bit_width = reg->bit_offset + reg->bit_width;
bit_offset = reg->bit_offset;
@ -358,16 +356,15 @@ acpi_status acpi_hw_write(u32 value, struct acpi_generic_address *reg)
while (bit_width) {
/*
* Use offset style bit reads because "Index * AccessWidth" is
* ensured to be less than 32-bits by acpi_hw_validate_register().
* ensured to be less than 64-bits by acpi_hw_validate_register().
*/
value32 = ACPI_GET_BITS(&value, index * access_width,
ACPI_MASK_BITS_ABOVE_32(access_width));
value64 = ACPI_GET_BITS(&value, index * access_width,
ACPI_MASK_BITS_ABOVE_64(access_width));
if (bit_offset >= access_width) {
bit_offset -= access_width;
} else {
if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
value64 = (u64)value32;
status =
acpi_os_write_memory((acpi_physical_address)
address +
@ -382,7 +379,7 @@ acpi_status acpi_hw_write(u32 value, struct acpi_generic_address *reg)
index *
ACPI_DIV_8
(access_width),
value32,
(u32)value64,
access_width);
}
}
@ -397,8 +394,9 @@ acpi_status acpi_hw_write(u32 value, struct acpi_generic_address *reg)
}
ACPI_DEBUG_PRINT((ACPI_DB_IO,
"Wrote: %8.8X width %2d to %8.8X%8.8X (%s)\n",
value, access_width, ACPI_FORMAT_UINT64(address),
"Wrote: %8.8X%8.8X width %2d to %8.8X%8.8X (%s)\n",
ACPI_FORMAT_UINT64(value), access_width,
ACPI_FORMAT_UINT64(address),
acpi_ut_get_region_name(reg->space_id)));
return (status);
@ -526,6 +524,7 @@ acpi_status acpi_hw_write_pm1_control(u32 pm1a_control, u32 pm1b_control)
acpi_status acpi_hw_register_read(u32 register_id, u32 *return_value)
{
u32 value = 0;
u64 value64;
acpi_status status;
ACPI_FUNCTION_TRACE(hw_register_read);
@ -564,12 +563,14 @@ acpi_status acpi_hw_register_read(u32 register_id, u32 *return_value)
case ACPI_REGISTER_PM2_CONTROL: /* 8-bit access */
status =
acpi_hw_read(&value, &acpi_gbl_FADT.xpm2_control_block);
acpi_hw_read(&value64, &acpi_gbl_FADT.xpm2_control_block);
value = (u32)value64;
break;
case ACPI_REGISTER_PM_TIMER: /* 32-bit access */
status = acpi_hw_read(&value, &acpi_gbl_FADT.xpm_timer_block);
status = acpi_hw_read(&value64, &acpi_gbl_FADT.xpm_timer_block);
value = (u32)value64;
break;
case ACPI_REGISTER_SMI_COMMAND_BLOCK: /* 8-bit access */
@ -586,7 +587,7 @@ acpi_status acpi_hw_register_read(u32 register_id, u32 *return_value)
}
if (ACPI_SUCCESS(status)) {
*return_value = value;
*return_value = (u32)value;
}
return_ACPI_STATUS(status);
@ -622,6 +623,7 @@ acpi_status acpi_hw_register_write(u32 register_id, u32 value)
{
acpi_status status;
u32 read_value;
u64 read_value64;
ACPI_FUNCTION_TRACE(hw_register_write);
@ -685,11 +687,12 @@ acpi_status acpi_hw_register_write(u32 register_id, u32 value)
* as per the ACPI spec.
*/
status =
acpi_hw_read(&read_value,
acpi_hw_read(&read_value64,
&acpi_gbl_FADT.xpm2_control_block);
if (ACPI_FAILURE(status)) {
goto exit;
}
read_value = (u32)read_value64;
/* Insert the bits to be preserved */
@ -745,22 +748,25 @@ acpi_hw_read_multiple(u32 *value,
{
u32 value_a = 0;
u32 value_b = 0;
u64 value64;
acpi_status status;
/* The first register is always required */
status = acpi_hw_read(&value_a, register_a);
status = acpi_hw_read(&value64, register_a);
if (ACPI_FAILURE(status)) {
return (status);
}
value_a = (u32)value64;
/* Second register is optional */
if (register_b->address) {
status = acpi_hw_read(&value_b, register_b);
status = acpi_hw_read(&value64, register_b);
if (ACPI_FAILURE(status)) {
return (status);
}
value_b = (u32)value64;
}
/*

10
drivers/acpi/acpica/hwtimer.c
View File

@ -94,6 +94,7 @@ ACPI_EXPORT_SYMBOL(acpi_get_timer_resolution)
acpi_status acpi_get_timer(u32 * ticks)
{
acpi_status status;
u64 timer_value;
ACPI_FUNCTION_TRACE(acpi_get_timer);
@ -107,7 +108,14 @@ acpi_status acpi_get_timer(u32 * ticks)
return_ACPI_STATUS(AE_SUPPORT);
}
status = acpi_hw_read(ticks, &acpi_gbl_FADT.xpm_timer_block);
status = acpi_hw_read(&timer_value, &acpi_gbl_FADT.xpm_timer_block);
if (ACPI_SUCCESS(status)) {
/* ACPI PM Timer is defined to be 32 bits (PM_TMR_LEN) */
*ticks = (u32)timer_value;
}
return_ACPI_STATUS(status);
}

118
drivers/acpi/acpica/hwxface.c
View File

@ -125,76 +125,12 @@ ACPI_EXPORT_SYMBOL(acpi_reset)
******************************************************************************/
acpi_status acpi_read(u64 *return_value, struct acpi_generic_address *reg)
{
u32 value_lo;
u32 value_hi;
u32 width;
u64 address;
acpi_status status;
ACPI_FUNCTION_NAME(acpi_read);
if (!return_value) {
return (AE_BAD_PARAMETER);
}
/* Validate contents of the GAS register. Allow 64-bit transfers */
status = acpi_hw_validate_register(reg, 64, &address);
if (ACPI_FAILURE(status)) {
return (status);
}
/*
* Two address spaces supported: Memory or I/O. PCI_Config is
* not supported here because the GAS structure is insufficient
*/
if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
status = acpi_os_read_memory((acpi_physical_address)
address, return_value,
reg->bit_width);
if (ACPI_FAILURE(status)) {
return (status);
}
} else { /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */
value_lo = 0;
value_hi = 0;
width = reg->bit_width;
if (width == 64) {
width = 32; /* Break into two 32-bit transfers */
}
status = acpi_hw_read_port((acpi_io_address)
address, &value_lo, width);
if (ACPI_FAILURE(status)) {
return (status);
}
if (reg->bit_width == 64) {
/* Read the top 32 bits */
status = acpi_hw_read_port((acpi_io_address)
(address + 4), &value_hi,
32);
if (ACPI_FAILURE(status)) {
return (status);
}
}
/* Set the return value only if status is AE_OK */
*return_value = (value_lo | ((u64)value_hi << 32));
}
ACPI_DEBUG_PRINT((ACPI_DB_IO,
"Read: %8.8X%8.8X width %2d from %8.8X%8.8X (%s)\n",
ACPI_FORMAT_UINT64(*return_value), reg->bit_width,
ACPI_FORMAT_UINT64(address),
acpi_ut_get_region_name(reg->space_id)));
return (AE_OK);
status = acpi_hw_read(return_value, reg);
return (status);
}
ACPI_EXPORT_SYMBOL(acpi_read)
@ -213,59 +149,11 @@ ACPI_EXPORT_SYMBOL(acpi_read)
******************************************************************************/
acpi_status acpi_write(u64 value, struct acpi_generic_address *reg)
{
u32 width;
u64 address;
acpi_status status;
ACPI_FUNCTION_NAME(acpi_write);
/* Validate contents of the GAS register. Allow 64-bit transfers */
status = acpi_hw_validate_register(reg, 64, &address);
if (ACPI_FAILURE(status)) {
return (status);
}
/*
* Two address spaces supported: Memory or IO. PCI_Config is
* not supported here because the GAS structure is insufficient
*/
if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
status = acpi_os_write_memory((acpi_physical_address)
address, value, reg->bit_width);
if (ACPI_FAILURE(status)) {
return (status);
}
} else { /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */
width = reg->bit_width;
if (width == 64) {
width = 32; /* Break into two 32-bit transfers */
}
status = acpi_hw_write_port((acpi_io_address)
address, ACPI_LODWORD(value),
width);
if (ACPI_FAILURE(status)) {
return (status);
}
if (reg->bit_width == 64) {
status = acpi_hw_write_port((acpi_io_address)
(address + 4),
ACPI_HIDWORD(value), 32);
if (ACPI_FAILURE(status)) {
return (status);
}
}
}
ACPI_DEBUG_PRINT((ACPI_DB_IO,
"Wrote: %8.8X%8.8X width %2d to %8.8X%8.8X (%s)\n",
ACPI_FORMAT_UINT64(value), reg->bit_width,
ACPI_FORMAT_UINT64(address),
acpi_ut_get_region_name(reg->space_id)));
status = acpi_hw_write(value, reg);
return (status);
}

4
drivers/acpi/acpica/nsconvert.c
View File

@ -78,8 +78,8 @@ acpi_ns_convert_to_integer(union acpi_operand_object *original_object,
/* String-to-Integer conversion */
status = acpi_ut_strtoul64(original_object->string.pointer,
acpi_gbl_integer_byte_width, &value);
status =
acpi_ut_strtoul64(original_object->string.pointer, &value);
if (ACPI_FAILURE(status)) {
return (status);
}

9
drivers/acpi/acpica/tbxface.c
View File

@ -173,10 +173,13 @@ acpi_status ACPI_INIT_FUNCTION acpi_reallocate_root_table(void)
ACPI_FUNCTION_TRACE(acpi_reallocate_root_table);
/*
* Only reallocate the root table if the host provided a static buffer
* for the table array in the call to acpi_initialize_tables.
* If there are tables unverified, it is required to reallocate the
* root table list to clean up invalid table entries. Otherwise only
* reallocate the root table list if the host provided a static buffer
* for the table array in the call to acpi_initialize_tables().
*/
if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {
if ((acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) &&
acpi_gbl_enable_table_validation) {
return_ACPI_STATUS(AE_SUPPORT);
}

438
drivers/acpi/acpica/utstrsuppt.c Normal file
View File

@ -0,0 +1,438 @@
/*******************************************************************************
*
* Module Name: utstrsuppt - Support functions for string-to-integer conversion
*
******************************************************************************/
/*
* Copyright (C) 2000 - 2017, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*/
#include <acpi/acpi.h>
#include "accommon.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utstrsuppt")
/* Local prototypes */
static acpi_status
acpi_ut_insert_digit(u64 *accumulated_value, u32 base, int ascii_digit);
static acpi_status
acpi_ut_strtoul_multiply64(u64 multiplicand, u64 multiplier, u64 *out_product);
static acpi_status
acpi_ut_strtoul_add64(u64 addend1, u64 addend2, u64 *out_sum);
/*******************************************************************************
*
* FUNCTION: acpi_ut_convert_octal_string
*
* PARAMETERS: string - Null terminated input string
* return_value_ptr - Where the converted value is returned
*
* RETURN: Status and 64-bit converted integer
*
* DESCRIPTION: Performs a base 8 conversion of the input string to an
* integer value, either 32 or 64 bits.
*
* NOTE: Maximum 64-bit unsigned octal value is 01777777777777777777777
* Maximum 32-bit unsigned octal value is 037777777777
*
******************************************************************************/
acpi_status acpi_ut_convert_octal_string(char *string, u64 *return_value_ptr)
{
u64 accumulated_value = 0;
acpi_status status = AE_OK;
/* Convert each ASCII byte in the input string */
while (*string) {
/* Character must be ASCII 0-7, otherwise terminate with no error */
if (!(ACPI_IS_OCTAL_DIGIT(*string))) {
break;
}
/* Convert and insert this octal digit into the accumulator */
status = acpi_ut_insert_digit(&accumulated_value, 8, *string);
if (ACPI_FAILURE(status)) {
status = AE_OCTAL_OVERFLOW;
break;
}
string++;
}
/* Always return the value that has been accumulated */
*return_value_ptr = accumulated_value;
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_convert_decimal_string
*
* PARAMETERS: string - Null terminated input string
* return_value_ptr - Where the converted value is returned
*
* RETURN: Status and 64-bit converted integer
*
* DESCRIPTION: Performs a base 10 conversion of the input string to an
* integer value, either 32 or 64 bits.
*
* NOTE: Maximum 64-bit unsigned decimal value is 18446744073709551615
* Maximum 32-bit unsigned decimal value is 4294967295
*
******************************************************************************/
acpi_status acpi_ut_convert_decimal_string(char *string, u64 *return_value_ptr)
{
u64 accumulated_value = 0;
acpi_status status = AE_OK;
/* Convert each ASCII byte in the input string */
while (*string) {
/* Character must be ASCII 0-9, otherwise terminate with no error */
if (!isdigit(*string)) {
break;
}
/* Convert and insert this decimal digit into the accumulator */
status = acpi_ut_insert_digit(&accumulated_value, 10, *string);
if (ACPI_FAILURE(status)) {
status = AE_DECIMAL_OVERFLOW;
break;
}
string++;
}
/* Always return the value that has been accumulated */
*return_value_ptr = accumulated_value;
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_convert_hex_string
*
* PARAMETERS: string - Null terminated input string
* return_value_ptr - Where the converted value is returned
*
* RETURN: Status and 64-bit converted integer
*
* DESCRIPTION: Performs a base 16 conversion of the input string to an
* integer value, either 32 or 64 bits.
*
* NOTE: Maximum 64-bit unsigned hex value is 0xFFFFFFFFFFFFFFFF
* Maximum 32-bit unsigned hex value is 0xFFFFFFFF
*
******************************************************************************/
acpi_status acpi_ut_convert_hex_string(char *string, u64 *return_value_ptr)
{
u64 accumulated_value = 0;
acpi_status status = AE_OK;
/* Convert each ASCII byte in the input string */
while (*string) {
/* Must be ASCII A-F, a-f, or 0-9, otherwise terminate with no error */
if (!isxdigit(*string)) {
break;
}
/* Convert and insert this hex digit into the accumulator */
status = acpi_ut_insert_digit(&accumulated_value, 16, *string);
if (ACPI_FAILURE(status)) {
status = AE_HEX_OVERFLOW;
break;
}
string++;
}
/* Always return the value that has been accumulated */
*return_value_ptr = accumulated_value;
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_remove_leading_zeros
*
* PARAMETERS: string - Pointer to input ASCII string
*
* RETURN: Next character after any leading zeros. This character may be
* used by the caller to detect end-of-string.
*
* DESCRIPTION: Remove any leading zeros in the input string. Return the
* next character after the final ASCII zero to enable the caller
* to check for the end of the string (NULL terminator).
*
******************************************************************************/
char acpi_ut_remove_leading_zeros(char **string)
{
while (**string == ACPI_ASCII_ZERO) {
*string += 1;
}
return (**string);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_remove_whitespace
*
* PARAMETERS: string - Pointer to input ASCII string
*
* RETURN: Next character after any whitespace. This character may be
* used by the caller to detect end-of-string.
*
* DESCRIPTION: Remove any leading whitespace in the input string. Return the
* next character after the final ASCII zero to enable the caller
* to check for the end of the string (NULL terminator).
*
******************************************************************************/
char acpi_ut_remove_whitespace(char **string)
{
while (isspace((u8)**string)) {
*string += 1;
}
return (**string);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_detect_hex_prefix
*
* PARAMETERS: string - Pointer to input ASCII string
*
* RETURN: TRUE if a "0x" prefix was found at the start of the string
*
* DESCRIPTION: Detect and remove a hex "0x" prefix
*
******************************************************************************/
u8 acpi_ut_detect_hex_prefix(char **string)
{
if ((**string == ACPI_ASCII_ZERO) &&
(tolower((int)*(*string + 1)) == 'x')) {
*string += 2; /* Go past the leading 0x */
return (TRUE);
}
return (FALSE); /* Not a hex string */
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_detect_octal_prefix
*
* PARAMETERS: string - Pointer to input ASCII string
*
* RETURN: True if an octal "0" prefix was found at the start of the
* string
*
* DESCRIPTION: Detect and remove an octal prefix (zero)
*
******************************************************************************/
u8 acpi_ut_detect_octal_prefix(char **string)
{
if (**string == ACPI_ASCII_ZERO) {
*string += 1; /* Go past the leading 0 */
return (TRUE);
}
return (FALSE); /* Not an octal string */
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_insert_digit
*
* PARAMETERS: accumulated_value - Current value of the integer value
* accumulator. The new value is
* returned here.
* base - Radix, either 8/10/16
* ascii_digit - ASCII single digit to be inserted
*
* RETURN: Status and result of the convert/insert operation. The only
* possible returned exception code is numeric overflow of
* either the multiply or add conversion operations.
*
* DESCRIPTION: Generic conversion and insertion function for all bases:
*
* 1) Multiply the current accumulated/converted value by the
* base in order to make room for the new character.
*
* 2) Convert the new character to binary and add it to the
* current accumulated value.
*
* Note: The only possible exception indicates an integer
* overflow (AE_NUMERIC_OVERFLOW)
*
******************************************************************************/
static acpi_status
acpi_ut_insert_digit(u64 *accumulated_value, u32 base, int ascii_digit)
{
acpi_status status;
u64 product;
/* Make room in the accumulated value for the incoming digit */
status = acpi_ut_strtoul_multiply64(*accumulated_value, base, &product);
if (ACPI_FAILURE(status)) {
return (status);
}
/* Add in the new digit, and store the sum to the accumulated value */
status =
acpi_ut_strtoul_add64(product,
acpi_ut_ascii_char_to_hex(ascii_digit),
accumulated_value);
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_strtoul_multiply64
*
* PARAMETERS: multiplicand - Current accumulated converted integer
* multiplier - Base/Radix
* out_product - Where the product is returned
*
* RETURN: Status and 64-bit product
*
* DESCRIPTION: Multiply two 64-bit values, with checking for 64-bit overflow as
* well as 32-bit overflow if necessary (if the current global
* integer width is 32).
*
******************************************************************************/
static acpi_status
acpi_ut_strtoul_multiply64(u64 multiplicand, u64 multiplier, u64 *out_product)
{
u64 val;
/* Exit if either operand is zero */
*out_product = 0;
if (!multiplicand || !multiplier) {
return (AE_OK);
}
/* Check for 64-bit overflow before the actual multiplication */
acpi_ut_short_divide(ACPI_UINT64_MAX, (u32)multiplier, &val, NULL);
if (multiplicand > val) {
return (AE_NUMERIC_OVERFLOW);
}
val = multiplicand * multiplier;
/* Check for 32-bit overflow if necessary */
if ((acpi_gbl_integer_bit_width == 32) && (val > ACPI_UINT32_MAX)) {
return (AE_NUMERIC_OVERFLOW);
}
*out_product = val;
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_strtoul_add64
*
* PARAMETERS: addend1 - Current accumulated converted integer
* addend2 - New hex value/char
* out_sum - Where sum is returned (Accumulator)
*
* RETURN: Status and 64-bit sum
*
* DESCRIPTION: Add two 64-bit values, with checking for 64-bit overflow as
* well as 32-bit overflow if necessary (if the current global
* integer width is 32).
*
******************************************************************************/
static acpi_status acpi_ut_strtoul_add64(u64 addend1, u64 addend2, u64 *out_sum)
{
u64 sum;
/* Check for 64-bit overflow before the actual addition */
if ((addend1 > 0) && (addend2 > (ACPI_UINT64_MAX - addend1))) {
return (AE_NUMERIC_OVERFLOW);
}
sum = addend1 + addend2;
/* Check for 32-bit overflow if necessary */
if ((acpi_gbl_integer_bit_width == 32) && (sum > ACPI_UINT32_MAX)) {
return (AE_NUMERIC_OVERFLOW);
}
*out_sum = sum;
return (AE_OK);
}

452
drivers/acpi/acpica/utstrtoul64.c
View File

@ -1,6 +1,7 @@
/*******************************************************************************
*
* Module Name: utstrtoul64 - string to 64-bit integer support
* Module Name: utstrtoul64 - String-to-integer conversion support for both
* 64-bit and 32-bit integers
*
******************************************************************************/
@ -44,304 +45,319 @@
#include <acpi/acpi.h>
#include "accommon.h"
/*******************************************************************************
*
* The functions in this module satisfy the need for 64-bit string-to-integer
* conversions on both 32-bit and 64-bit platforms.
*
******************************************************************************/
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utstrtoul64")
/* Local prototypes */
static u64 acpi_ut_strtoul_base10(char *string, u32 flags);
static u64 acpi_ut_strtoul_base16(char *string, u32 flags);
/*******************************************************************************
*
* String conversion rules as written in the ACPI specification. The error
* conditions and behavior are different depending on the type of conversion.
* This module contains the top-level string to 64/32-bit unsigned integer
* conversion functions:
*
* 1) A standard strtoul() function that supports 64-bit integers, base
* 8/10/16, with integer overflow support. This is used mainly by the
* iASL compiler, which implements tighter constraints on integer
* constants than the runtime (interpreter) integer-to-string conversions.
* 2) Runtime "Explicit conversion" as defined in the ACPI specification.
* 3) Runtime "Implicit conversion" as defined in the ACPI specification.
*
* Implicit data type conversion: string-to-integer
* --------------------------------------------------
* Current users of this module:
*
* Base is always 16. This is the ACPI_STRTOUL_BASE16 case.
* iASL - Preprocessor (constants and math expressions)
* iASL - Main parser, conversion of constants to integers
* iASL - Data Table Compiler parser (constants and math expressions)
* interpreter - Implicit and explicit conversions, GPE method names
* interpreter - Repair code for return values from predefined names
* debugger - Command line input string conversion
* acpi_dump - ACPI table physical addresses
* acpi_exec - Support for namespace overrides
*
* Example:
* Add ("BA98", Arg0, Local0)
* Notes concerning users of these interfaces:
*
* The integer is initialized to the value zero.
* The ASCII string is interpreted as a hexadecimal constant.
* acpi_gbl_integer_byte_width is used to set the 32/64 bit limit for explicit
* and implicit conversions. This global must be set to the proper width.
* For the core ACPICA code, the width depends on the DSDT version. For the
* acpi_ut_strtoul64 interface, all conversions are 64 bits. This interface is
* used primarily for iASL, where the default width is 64 bits for all parsers,
* but error checking is performed later to flag cases where a 64-bit constant
* is wrongly defined in a 32-bit DSDT/SSDT.
*
* 1) A "0x" prefix is not allowed. However, ACPICA allows this for
* compatibility with previous ACPICA. (NO ERROR)
*
* 2) Terminates when the size of an integer is reached (32 or 64 bits).
* (NO ERROR)
*
* 3) The first non-hex character terminates the conversion without error.
* (NO ERROR)
*
* 4) Conversion of a null (zero-length) string to an integer is not
* allowed. However, ACPICA allows this for compatibility with previous
* ACPICA. This conversion returns the value 0. (NO ERROR)
*
*
* Explicit data type conversion: to_integer() with string operand
* ---------------------------------------------------------------
*
* Base is either 10 (default) or 16 (with 0x prefix)
*
* Examples:
* to_integer ("1000")
* to_integer ("0xABCD")
*
* 1) Can be (must be) either a decimal or hexadecimal numeric string.
* A hex value must be prefixed by "0x" or it is interpreted as a decimal.
*
* 2) The value must not exceed the maximum of an integer value. ACPI spec
* states the behavior is "unpredictable", so ACPICA matches the behavior
* of the implicit conversion case.(NO ERROR)
*
* 3) Behavior on the first non-hex character is not specified by the ACPI
* spec, so ACPICA matches the behavior of the implicit conversion case
* and terminates. (NO ERROR)
*
* 4) A null (zero-length) string is illegal.
* However, ACPICA allows this for compatibility with previous ACPICA.
* This conversion returns the value 0. (NO ERROR)
* In ACPI, the only place where octal numbers are supported is within
* the ASL language itself. This is implemented via the main acpi_ut_strtoul64
* interface. According the ACPI specification, there is no ACPI runtime
* support (explicit/implicit) for octal string conversions.
*
******************************************************************************/
/*******************************************************************************
*
* FUNCTION: acpi_ut_strtoul64
*
* PARAMETERS: string - Null terminated input string
* flags - Conversion info, see below
* PARAMETERS: string - Null terminated input string,
* must be a valid pointer
* return_value - Where the converted integer is
* returned
* returned. Must be a valid pointer
*
* RETURN: Status and Converted value
* RETURN: Status and converted integer. Returns an exception on a
* 64-bit numeric overflow
*
* DESCRIPTION: Convert a string into an unsigned value. Performs either a
* 32-bit or 64-bit conversion, depending on the input integer
* size in Flags (often the current mode of the interpreter).
* DESCRIPTION: Convert a string into an unsigned integer. Always performs a
* full 64-bit conversion, regardless of the current global
* integer width. Supports Decimal, Hex, and Octal strings.
*
* Values for Flags:
* ACPI_STRTOUL_32BIT - Max integer value is 32 bits
* ACPI_STRTOUL_64BIT - Max integer value is 64 bits
* ACPI_STRTOUL_BASE16 - Input string is hexadecimal. Default
* is 10/16 based on string prefix (0x).
* Current users of this function:
*
* NOTES:
* Negative numbers are not supported, as they are not supported by ACPI.
*
* Supports only base 16 or base 10 strings/values. Does not
* support Octal strings, as these are not supported by ACPI.
*
* Current users of this support:
*
* interpreter - Implicit and explicit conversions, GPE method names
* debugger - Command line input string conversion
* iASL - Main parser, conversion of constants to integers
* iASL - Data Table Compiler parser (constant math expressions)
* iASL - Preprocessor (constant math expressions)
* acpi_dump - Input table addresses
* acpi_exec - Testing of the acpi_ut_strtoul64 function
*
* Note concerning callers:
* acpi_gbl_integer_byte_width can be used to set the 32/64 limit. If used,
* this global should be set to the proper width. For the core ACPICA code,
* this width depends on the DSDT version. For iASL, the default byte
* width is always 8 for the parser, but error checking is performed later
* to flag cases where a 64-bit constant is defined in a 32-bit DSDT/SSDT.
* iASL - Preprocessor (constants and math expressions)
* iASL - Main ASL parser, conversion of ASL constants to integers
* iASL - Data Table Compiler parser (constants and math expressions)
* interpreter - Repair code for return values from predefined names
* acpi_dump - ACPI table physical addresses
* acpi_exec - Support for namespace overrides
*
******************************************************************************/
acpi_status acpi_ut_strtoul64(char *string, u32 flags, u64 *return_value)
acpi_status acpi_ut_strtoul64(char *string, u64 *return_value)
{
acpi_status status = AE_OK;
u32 base;
u8 original_bit_width;
u32 base = 10; /* Default is decimal */
ACPI_FUNCTION_TRACE_STR(ut_strtoul64, string);
/* Parameter validation */
if (!string || !return_value) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
*return_value = 0;
/* Check for zero-length string, returns 0 */
/* A NULL return string returns a value of zero */
if (*string == 0) {
return_ACPI_STATUS(AE_OK);
}
/* Skip over any white space at start of string */
while (isspace((int)*string)) {
string++;
}
/* End of string? return 0 */
if (*string == 0) {
if (!acpi_ut_remove_whitespace(&string)) {
return_ACPI_STATUS(AE_OK);
}
/*
* 1) The "0x" prefix indicates base 16. Per the ACPI specification,
* the "0x" prefix is only allowed for implicit (non-strict) conversions.
* However, we always allow it for compatibility with older ACPICA.
* 1) Check for a hex constant. A "0x" prefix indicates base 16.
*/
if ((*string == ACPI_ASCII_ZERO) &&
(tolower((int)*(string + 1)) == 'x')) {
string += 2; /* Go past the 0x */
if (*string == 0) {
return_ACPI_STATUS(AE_OK); /* Return value 0 */
}
if (acpi_ut_detect_hex_prefix(&string)) {
base = 16;
}
/* 2) Force to base 16 (implicit conversion case) */
else if (flags & ACPI_STRTOUL_BASE16) {
base = 16;
/*
* 2) Check for an octal constant, defined to be a leading zero
* followed by sequence of octal digits (0-7)
*/
else if (acpi_ut_detect_octal_prefix(&string)) {
base = 8;
}
/* 3) Default fallback is to Base 10 */
else {
base = 10;
if (!acpi_ut_remove_leading_zeros(&string)) {
return_ACPI_STATUS(AE_OK); /* Return value 0 */
}
/* Skip all leading zeros */
/*
* Force a full 64-bit conversion. The caller (usually iASL) must
* check for a 32-bit overflow later as necessary (If current mode
* is 32-bit, meaning a 32-bit DSDT).
*/
original_bit_width = acpi_gbl_integer_bit_width;
acpi_gbl_integer_bit_width = 64;
while (*string == ACPI_ASCII_ZERO) {
string++;
if (*string == 0) {
return_ACPI_STATUS(AE_OK); /* Return value 0 */
}
/*
* Perform the base 8, 10, or 16 conversion. A 64-bit numeric overflow
* will return an exception (to allow iASL to flag the statement).
*/
switch (base) {
case 8:
status = acpi_ut_convert_octal_string(string, return_value);
break;
case 10:
status = acpi_ut_convert_decimal_string(string, return_value);
break;
case 16:
default:
status = acpi_ut_convert_hex_string(string, return_value);
break;
}
/* Perform the base 16 or 10 conversion */
if (base == 16) {
*return_value = acpi_ut_strtoul_base16(string, flags);
} else {
*return_value = acpi_ut_strtoul_base10(string, flags);
}
/* Only possible exception from above is a 64-bit overflow */
acpi_gbl_integer_bit_width = original_bit_width;
return_ACPI_STATUS(status);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_strtoul_base10
* FUNCTION: acpi_ut_implicit_strtoul64
*
* PARAMETERS: string - Null terminated input string
* flags - Conversion info
* PARAMETERS: string - Null terminated input string,
* must be a valid pointer
*
* RETURN: 64-bit converted integer
* RETURN: Converted integer
*
* DESCRIPTION: Performs a base 10 conversion of the input string to an
* integer value, either 32 or 64 bits.
* Note: String must be valid and non-null.
* DESCRIPTION: Perform a 64-bit conversion with restrictions placed upon
* an "implicit conversion" by the ACPI specification. Used by
* many ASL operators that require an integer operand, and support
* an automatic (implicit) conversion from a string operand
* to the final integer operand. The major restriction is that
* only hex strings are supported.
*
* -----------------------------------------------------------------------------
*
* Base is always 16, either with or without the 0x prefix. Decimal and
* Octal strings are not supported, as per the ACPI specification.
*
* Examples (both are hex values):
* Add ("BA98", Arg0, Local0)
* Subtract ("0x12345678", Arg1, Local1)
*
* Conversion rules as extracted from the ACPI specification:
*
* The converted integer is initialized to the value zero.
* The ASCII string is always interpreted as a hexadecimal constant.
*
* 1) According to the ACPI specification, a "0x" prefix is not allowed.
* However, ACPICA allows this as an ACPI extension on general
* principle. (NO ERROR)
*
* 2) The conversion terminates when the size of an integer is reached
* (32 or 64 bits). There are no numeric overflow conditions. (NO ERROR)
*
* 3) The first non-hex character terminates the conversion and returns
* the current accumulated value of the converted integer (NO ERROR).
*
* 4) Conversion of a null (zero-length) string to an integer is
* technically not allowed. However, ACPICA allows this as an ACPI
* extension. The conversion returns the value 0. (NO ERROR)
*
* NOTE: There are no error conditions returned by this function. At
* the minimum, a value of zero is returned.
*
* Current users of this function:
*
* interpreter - All runtime implicit conversions, as per ACPI specification
* iASL - Data Table Compiler parser (constants and math expressions)
*
******************************************************************************/
static u64 acpi_ut_strtoul_base10(char *string, u32 flags)
u64 acpi_ut_implicit_strtoul64(char *string)
{
int ascii_digit;
u64 next_value;
u64 return_value = 0;
u64 converted_integer = 0;
/* Main loop: convert each ASCII byte in the input string */
ACPI_FUNCTION_TRACE_STR(ut_implicit_strtoul64, string);
while (*string) {
ascii_digit = *string;
if (!isdigit(ascii_digit)) {
/* Not ASCII 0-9, terminate */
goto exit;
}
/* Convert and insert (add) the decimal digit */
acpi_ut_short_multiply(return_value, 10, &next_value);
next_value += (ascii_digit - ACPI_ASCII_ZERO);
/* Check for overflow (32 or 64 bit) - return current converted value */
if (((flags & ACPI_STRTOUL_32BIT) && (next_value > ACPI_UINT32_MAX)) || (next_value < return_value)) { /* 64-bit overflow case */
goto exit;
}
return_value = next_value;
string++;
if (!acpi_ut_remove_whitespace(&string)) {
return_VALUE(0);
}
exit:
return (return_value);
/*
* Per the ACPI specification, only hexadecimal is supported for
* implicit conversions, and the "0x" prefix is "not allowed".
* However, allow a "0x" prefix as an ACPI extension.
*/
acpi_ut_detect_hex_prefix(&string);
if (!acpi_ut_remove_leading_zeros(&string)) {
return_VALUE(0);
}
/*
* Ignore overflow as per the ACPI specification. This is implemented by
* ignoring the return status from the conversion function called below.
* On overflow, the input string is simply truncated.
*/
acpi_ut_convert_hex_string(string, &converted_integer);
return_VALUE(converted_integer);
}
/*******************************************************************************
*
* FUNCTION: acpi_ut_strtoul_base16
* FUNCTION: acpi_ut_explicit_strtoul64
*
* PARAMETERS: string - Null terminated input string
* flags - conversion info
* PARAMETERS: string - Null terminated input string,
* must be a valid pointer
*
* RETURN: 64-bit converted integer
* RETURN: Converted integer
*
* DESCRIPTION: Performs a base 16 conversion of the input string to an
* integer value, either 32 or 64 bits.
* Note: String must be valid and non-null.
* DESCRIPTION: Perform a 64-bit conversion with the restrictions placed upon
* an "explicit conversion" by the ACPI specification. The
* main restriction is that only hex and decimal are supported.
*
* -----------------------------------------------------------------------------
*
* Base is either 10 (default) or 16 (with 0x prefix). Octal (base 8) strings
* are not supported, as per the ACPI specification.
*
* Examples:
* to_integer ("1000") Decimal
* to_integer ("0xABCD") Hex
*
* Conversion rules as extracted from the ACPI specification:
*
* 1) The input string is either a decimal or hexadecimal numeric string.
* A hex value must be prefixed by "0x" or it is interpreted as decimal.
*
* 2) The value must not exceed the maximum of an integer value
* (32 or 64 bits). The ACPI specification states the behavior is
* "unpredictable", so ACPICA matches the behavior of the implicit
* conversion case. There are no numeric overflow conditions. (NO ERROR)
*
* 3) Behavior on the first non-hex character is not defined by the ACPI
* specification (for the to_integer operator), so ACPICA matches the
* behavior of the implicit conversion case. It terminates the
* conversion and returns the current accumulated value of the converted
* integer. (NO ERROR)
*
* 4) Conversion of a null (zero-length) string to an integer is
* technically not allowed. However, ACPICA allows this as an ACPI
* extension. The conversion returns the value 0. (NO ERROR)
*
* NOTE: There are no error conditions returned by this function. At the
* minimum, a value of zero is returned.
*
* Current users of this function:
*
* interpreter - Runtime ASL to_integer operator, as per the ACPI specification
*
******************************************************************************/
static u64 acpi_ut_strtoul_base16(char *string, u32 flags)
u64 acpi_ut_explicit_strtoul64(char *string)
{
int ascii_digit;
u32 valid_digits = 1;
u64 return_value = 0;
u64 converted_integer = 0;
u32 base = 10; /* Default is decimal */
/* Main loop: convert each ASCII byte in the input string */
ACPI_FUNCTION_TRACE_STR(ut_explicit_strtoul64, string);
while (*string) {
/* Check for overflow (32 or 64 bit) - return current converted value */
if ((valid_digits > 16) ||
((valid_digits > 8) && (flags & ACPI_STRTOUL_32BIT))) {
goto exit;
}
ascii_digit = *string;
if (!isxdigit(ascii_digit)) {
/* Not Hex ASCII A-F, a-f, or 0-9, terminate */
goto exit;
}
/* Convert and insert the hex digit */
acpi_ut_short_shift_left(return_value, 4, &return_value);
return_value |= acpi_ut_ascii_char_to_hex(ascii_digit);
string++;
valid_digits++;
if (!acpi_ut_remove_whitespace(&string)) {
return_VALUE(0);
}
exit:
return (return_value);
/*
* Only Hex and Decimal are supported, as per the ACPI specification.
* A "0x" prefix indicates hex; otherwise decimal is assumed.
*/
if (acpi_ut_detect_hex_prefix(&string)) {
base = 16;
}
if (!acpi_ut_remove_leading_zeros(&string)) {
return_VALUE(0);
}
/*
* Ignore overflow as per the ACPI specification. This is implemented by
* ignoring the return status from the conversion functions called below.
* On overflow, the input string is simply truncated.
*/
switch (base) {
case 10:
default:
acpi_ut_convert_decimal_string(string, &converted_integer);
break;
case 16:
acpi_ut_convert_hex_string(string, &converted_integer);
break;
}
return_VALUE(converted_integer);
}

16
include/acpi/acexcep.h
View File

@ -126,8 +126,12 @@ struct acpi_exception_info {
#define AE_NOT_CONFIGURED EXCEP_ENV (0x001C)
#define AE_ACCESS EXCEP_ENV (0x001D)
#define AE_IO_ERROR EXCEP_ENV (0x001E)
#define AE_NUMERIC_OVERFLOW EXCEP_ENV (0x001F)
#define AE_HEX_OVERFLOW EXCEP_ENV (0x0020)
#define AE_DECIMAL_OVERFLOW EXCEP_ENV (0x0021)
#define AE_OCTAL_OVERFLOW EXCEP_ENV (0x0022)
#define AE_CODE_ENV_MAX 0x001E
#define AE_CODE_ENV_MAX 0x0022
/*
* Programmer exceptions
@ -263,7 +267,15 @@ static const struct acpi_exception_info acpi_gbl_exception_names_env[] = {
EXCEP_TXT("AE_NOT_CONFIGURED",
"The interface is not part of the current subsystem configuration"),
EXCEP_TXT("AE_ACCESS", "Permission denied for the requested operation"),
EXCEP_TXT("AE_IO_ERROR", "An I/O error occurred")
EXCEP_TXT("AE_IO_ERROR", "An I/O error occurred"),
EXCEP_TXT("AE_NUMERIC_OVERFLOW",
"Overflow during string-to-integer conversion"),
EXCEP_TXT("AE_HEX_OVERFLOW",
"Overflow during ASCII hex-to-binary conversion"),
EXCEP_TXT("AE_DECIMAL_OVERFLOW",
"Overflow during ASCII decimal-to-binary conversion"),
EXCEP_TXT("AE_OCTAL_OVERFLOW",
"Overflow during ASCII octal-to-binary conversion")
};
static const struct acpi_exception_info acpi_gbl_exception_names_pgm[] = {

2
include/acpi/acpixf.h
View File

@ -46,7 +46,7 @@
/* Current ACPICA subsystem version in YYYYMMDD format */
#define ACPI_CA_VERSION 0x20170728
#define ACPI_CA_VERSION 0x20170831
#include <acpi/acconfig.h>
#include <acpi/actypes.h>

30
include/acpi/actbl1.h
View File

@ -69,6 +69,7 @@
#define ACPI_SIG_HEST "HEST" /* Hardware Error Source Table */
#define ACPI_SIG_MADT "APIC" /* Multiple APIC Description Table */
#define ACPI_SIG_MSCT "MSCT" /* Maximum System Characteristics Table */
#define ACPI_SIG_PDTT "PDTT" /* Processor Debug Trigger Table */
#define ACPI_SIG_PPTT "PPTT" /* Processor Properties Topology Table */
#define ACPI_SIG_SBST "SBST" /* Smart Battery Specification Table */
#define ACPI_SIG_SLIT "SLIT" /* System Locality Distance Information Table */
@ -1280,6 +1281,35 @@ struct acpi_nfit_flush_address {
u64 hint_address[1]; /* Variable length */
};
/*******************************************************************************
*
* PDTT - Processor Debug Trigger Table (ACPI 6.2)
* Version 0
*
******************************************************************************/
struct acpi_table_pdtt {
struct acpi_table_header header; /* Common ACPI table header */
u8 trigger_count;
u8 reserved[3];
u32 array_offset;
};
/*
* PDTT Communication Channel Identifier Structure.
* The number of these structures is defined by trigger_count above,
* starting at array_offset.
*/
struct acpi_pdtt_channel {
u16 sub_channel_id;
};
/* Mask and Flags for above */
#define ACPI_PDTT_SUBCHANNEL_ID_MASK 0x00FF
#define ACPI_PDTT_RUNTIME_TRIGGER (1<<8)
#define ACPI_PPTT_WAIT_COMPLETION (1<<9)
/*******************************************************************************
*
* PPTT - Processor Properties Topology Table (ACPI 6.2)

1
tools/power/acpi/tools/acpidump/Makefile
View File

@ -39,6 +39,7 @@ TOOL_OBJS = \
utnonansi.o\
utprint.o\
utstring.o\
utstrsuppt.o\
utstrtoul64.o\
utxferror.o\
oslinuxtbl.o\

3
tools/power/acpi/tools/acpidump/apdump.c
View File

@ -287,8 +287,7 @@ int ap_dump_table_by_address(char *ascii_address)
/* Convert argument to an integer physical address */
status = acpi_ut_strtoul64(ascii_address, ACPI_STRTOUL_64BIT,
&long_address);
status = acpi_ut_strtoul64(ascii_address, &long_address);
if (ACPI_FAILURE(status)) {
fprintf(stderr, "%s: Could not convert to a physical address\n",
ascii_address);

4
tools/power/acpi/tools/acpidump/apmain.c
View File

@ -208,9 +208,7 @@ static int ap_do_options(int argc, char **argv)
case 'r': /* Dump tables from specified RSDP */
status =
acpi_ut_strtoul64(acpi_gbl_optarg,
ACPI_STRTOUL_64BIT,
&gbl_rsdp_base);
acpi_ut_strtoul64(acpi_gbl_optarg, &gbl_rsdp_base);
if (ACPI_FAILURE(status)) {
fprintf(stderr,
"%s: Could not convert to a physical address\n",