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path: root/drivers/acpi/acpica/exfldio.c
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Diffstat (limited to 'drivers/acpi/acpica/exfldio.c')
-rw-r--r--drivers/acpi/acpica/exfldio.c236
1 files changed, 139 insertions, 97 deletions
diff --git a/drivers/acpi/acpica/exfldio.c b/drivers/acpi/acpica/exfldio.c
index d7b3b418fb4..1d1b27a96c5 100644
--- a/drivers/acpi/acpica/exfldio.c
+++ b/drivers/acpi/acpica/exfldio.c
@@ -5,7 +5,7 @@
*****************************************************************************/
/*
- * Copyright (C) 2000 - 2008, Intel Corp.
+ * Copyright (C) 2000 - 2014, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -54,12 +54,10 @@ ACPI_MODULE_NAME("exfldio")
/* Local prototypes */
static acpi_status
acpi_ex_field_datum_io(union acpi_operand_object *obj_desc,
- u32 field_datum_byte_offset,
- acpi_integer * value, u32 read_write);
+ u32 field_datum_byte_offset, u64 *value, u32 read_write);
static u8
-acpi_ex_register_overflow(union acpi_operand_object *obj_desc,
- acpi_integer value);
+acpi_ex_register_overflow(union acpi_operand_object *obj_desc, u64 value);
static acpi_status
acpi_ex_setup_region(union acpi_operand_object *obj_desc,
@@ -87,6 +85,7 @@ acpi_ex_setup_region(union acpi_operand_object *obj_desc,
{
acpi_status status = AE_OK;
union acpi_operand_object *rgn_desc;
+ u8 space_id;
ACPI_FUNCTION_TRACE_U32(ex_setup_region, field_datum_byte_offset);
@@ -95,13 +94,24 @@ acpi_ex_setup_region(union acpi_operand_object *obj_desc,
/* We must have a valid region */
if (rgn_desc->common.type != ACPI_TYPE_REGION) {
- ACPI_ERROR((AE_INFO, "Needed Region, found type %X (%s)",
+ ACPI_ERROR((AE_INFO, "Needed Region, found type 0x%X (%s)",
rgn_desc->common.type,
acpi_ut_get_object_type_name(rgn_desc)));
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
+ space_id = rgn_desc->region.space_id;
+
+ /* Validate the Space ID */
+
+ if (!acpi_is_valid_space_id(space_id)) {
+ ACPI_ERROR((AE_INFO,
+ "Invalid/unknown Address Space ID: 0x%2.2X",
+ space_id));
+ return_ACPI_STATUS(AE_AML_INVALID_SPACE_ID);
+ }
+
/*
* If the Region Address and Length have not been previously evaluated,
* evaluate them now and save the results.
@@ -113,18 +123,13 @@ acpi_ex_setup_region(union acpi_operand_object *obj_desc,
}
}
- /* Exit if Address/Length have been disallowed by the host OS */
-
- if (rgn_desc->common.flags & AOPOBJ_INVALID) {
- return_ACPI_STATUS(AE_AML_ILLEGAL_ADDRESS);
- }
-
/*
- * Exit now for SMBus or IPMI address space, it has a non-linear address space
- * and the request cannot be directly validated
+ * Exit now for SMBus, GSBus or IPMI address space, it has a non-linear
+ * address space and the request cannot be directly validated
*/
- if (rgn_desc->region.space_id == ACPI_ADR_SPACE_SMBUS ||
- rgn_desc->region.space_id == ACPI_ADR_SPACE_IPMI) {
+ if (space_id == ACPI_ADR_SPACE_SMBUS ||
+ space_id == ACPI_ADR_SPACE_GSBUS ||
+ space_id == ACPI_ADR_SPACE_IPMI) {
/* SMBus or IPMI has a non-linear address space */
@@ -143,13 +148,12 @@ acpi_ex_setup_region(union acpi_operand_object *obj_desc,
#endif
/*
- * Validate the request. The entire request from the byte offset for a
+ * Validate the request. The entire request from the byte offset for a
* length of one field datum (access width) must fit within the region.
* (Region length is specified in bytes)
*/
if (rgn_desc->region.length <
- (obj_desc->common_field.base_byte_offset +
- field_datum_byte_offset +
+ (obj_desc->common_field.base_byte_offset + field_datum_byte_offset +
obj_desc->common_field.access_byte_width)) {
if (acpi_gbl_enable_interpreter_slack) {
/*
@@ -172,11 +176,11 @@ acpi_ex_setup_region(union acpi_operand_object *obj_desc,
obj_desc->common_field.access_byte_width) {
/*
* This is the case where the access_type (acc_word, etc.) is wider
- * than the region itself. For example, a region of length one
+ * than the region itself. For example, a region of length one
* byte, and a field with Dword access specified.
*/
ACPI_ERROR((AE_INFO,
- "Field [%4.4s] access width (%d bytes) too large for region [%4.4s] (length %X)",
+ "Field [%4.4s] access width (%u bytes) too large for region [%4.4s] (length %u)",
acpi_ut_get_node_name(obj_desc->
common_field.node),
obj_desc->common_field.access_byte_width,
@@ -190,7 +194,7 @@ acpi_ex_setup_region(union acpi_operand_object *obj_desc,
* exceeds region length, indicate an error
*/
ACPI_ERROR((AE_INFO,
- "Field [%4.4s] Base+Offset+Width %X+%X+%X is beyond end of region [%4.4s] (length %X)",
+ "Field [%4.4s] Base+Offset+Width %u+%u+%u is beyond end of region [%4.4s] (length %u)",
acpi_ut_get_node_name(obj_desc->common_field.node),
obj_desc->common_field.base_byte_offset,
field_datum_byte_offset,
@@ -211,9 +215,9 @@ acpi_ex_setup_region(union acpi_operand_object *obj_desc,
* PARAMETERS: obj_desc - Field to be read
* field_datum_byte_offset - Byte offset of this datum within the
* parent field
- * Value - Where to store value (must at least
- * the size of acpi_integer)
- * Function - Read or Write flag plus other region-
+ * value - Where to store value (must at least
+ * 64 bits)
+ * function - Read or Write flag plus other region-
* dependent flags
*
* RETURN: Status
@@ -224,8 +228,7 @@ acpi_ex_setup_region(union acpi_operand_object *obj_desc,
acpi_status
acpi_ex_access_region(union acpi_operand_object *obj_desc,
- u32 field_datum_byte_offset,
- acpi_integer * value, u32 function)
+ u32 field_datum_byte_offset, u64 *value, u32 function)
{
acpi_status status;
union acpi_operand_object *rgn_desc;
@@ -274,22 +277,23 @@ acpi_ex_access_region(union acpi_operand_object *obj_desc,
/* Invoke the appropriate address_space/op_region handler */
- status =
- acpi_ev_address_space_dispatch(rgn_desc, function, region_offset,
- ACPI_MUL_8(obj_desc->common_field.
- access_byte_width),
- value);
+ status = acpi_ev_address_space_dispatch(rgn_desc, obj_desc,
+ function, region_offset,
+ ACPI_MUL_8(obj_desc->
+ common_field.
+ access_byte_width),
+ value);
if (ACPI_FAILURE(status)) {
if (status == AE_NOT_IMPLEMENTED) {
ACPI_ERROR((AE_INFO,
- "Region %s(%X) not implemented",
+ "Region %s (ID=%u) not implemented",
acpi_ut_get_region_name(rgn_desc->region.
space_id),
rgn_desc->region.space_id));
} else if (status == AE_NOT_EXIST) {
ACPI_ERROR((AE_INFO,
- "Region %s(%X) has no handler",
+ "Region %s (ID=%u) has no handler",
acpi_ut_get_region_name(rgn_desc->region.
space_id),
rgn_desc->region.space_id));
@@ -304,21 +308,20 @@ acpi_ex_access_region(union acpi_operand_object *obj_desc,
* FUNCTION: acpi_ex_register_overflow
*
* PARAMETERS: obj_desc - Register(Field) to be written
- * Value - Value to be stored
+ * value - Value to be stored
*
* RETURN: TRUE if value overflows the field, FALSE otherwise
*
* DESCRIPTION: Check if a value is out of range of the field being written.
* Used to check if the values written to Index and Bank registers
- * are out of range. Normally, the value is simply truncated
+ * are out of range. Normally, the value is simply truncated
* to fit the field, but this case is most likely a serious
* coding error in the ASL.
*
******************************************************************************/
static u8
-acpi_ex_register_overflow(union acpi_operand_object *obj_desc,
- acpi_integer value)
+acpi_ex_register_overflow(union acpi_operand_object *obj_desc, u64 value)
{
if (obj_desc->common_field.bit_length >= ACPI_INTEGER_BIT_SIZE) {
@@ -329,11 +332,16 @@ acpi_ex_register_overflow(union acpi_operand_object *obj_desc,
return (FALSE);
}
- if (value >= ((acpi_integer) 1 << obj_desc->common_field.bit_length)) {
+ if (value >= ((u64) 1 << obj_desc->common_field.bit_length)) {
/*
* The Value is larger than the maximum value that can fit into
* the register.
*/
+ ACPI_ERROR((AE_INFO,
+ "Index value 0x%8.8X%8.8X overflows field width 0x%X",
+ ACPI_FORMAT_UINT64(value),
+ obj_desc->common_field.bit_length));
+
return (TRUE);
}
@@ -349,12 +357,12 @@ acpi_ex_register_overflow(union acpi_operand_object *obj_desc,
* PARAMETERS: obj_desc - Field to be read
* field_datum_byte_offset - Byte offset of this datum within the
* parent field
- * Value - Where to store value (must be 64 bits)
+ * value - Where to store value (must be 64 bits)
* read_write - Read or Write flag
*
* RETURN: Status
*
- * DESCRIPTION: Read or Write a single datum of a field. The field_type is
+ * DESCRIPTION: Read or Write a single datum of a field. The field_type is
* demultiplexed here to handle the different types of fields
* (buffer_field, region_field, index_field, bank_field)
*
@@ -362,11 +370,10 @@ acpi_ex_register_overflow(union acpi_operand_object *obj_desc,
static acpi_status
acpi_ex_field_datum_io(union acpi_operand_object *obj_desc,
- u32 field_datum_byte_offset,
- acpi_integer * value, u32 read_write)
+ u32 field_datum_byte_offset, u64 *value, u32 read_write)
{
acpi_status status;
- acpi_integer local_value;
+ u64 local_value;
ACPI_FUNCTION_TRACE_U32(ex_field_datum_io, field_datum_byte_offset);
@@ -433,14 +440,13 @@ acpi_ex_field_datum_io(union acpi_operand_object *obj_desc,
break;
case ACPI_TYPE_LOCAL_BANK_FIELD:
-
/*
* Ensure that the bank_value is not beyond the capacity of
* the register
*/
if (acpi_ex_register_overflow(obj_desc->bank_field.bank_obj,
- (acpi_integer) obj_desc->
- bank_field.value)) {
+ (u64) obj_desc->bank_field.
+ value)) {
return_ACPI_STATUS(AE_AML_REGISTER_LIMIT);
}
@@ -475,14 +481,13 @@ acpi_ex_field_datum_io(union acpi_operand_object *obj_desc,
break;
case ACPI_TYPE_LOCAL_INDEX_FIELD:
-
/*
* Ensure that the index_value is not beyond the capacity of
* the register
*/
if (acpi_ex_register_overflow(obj_desc->index_field.index_obj,
- (acpi_integer) obj_desc->
- index_field.value)) {
+ (u64) obj_desc->index_field.
+ value)) {
return_ACPI_STATUS(AE_AML_REGISTER_LIMIT);
}
@@ -512,7 +517,7 @@ acpi_ex_field_datum_io(union acpi_operand_object *obj_desc,
status =
acpi_ex_extract_from_field(obj_desc->index_field.
data_obj, value,
- sizeof(acpi_integer));
+ sizeof(u64));
} else {
/* Write the datum to the data_register */
@@ -523,13 +528,13 @@ acpi_ex_field_datum_io(union acpi_operand_object *obj_desc,
status =
acpi_ex_insert_into_field(obj_desc->index_field.
data_obj, value,
- sizeof(acpi_integer));
+ sizeof(u64));
}
break;
default:
- ACPI_ERROR((AE_INFO, "Wrong object type in field I/O %X",
+ ACPI_ERROR((AE_INFO, "Wrong object type in field I/O %u",
obj_desc->common.type));
status = AE_AML_INTERNAL;
break;
@@ -538,13 +543,13 @@ acpi_ex_field_datum_io(union acpi_operand_object *obj_desc,
if (ACPI_SUCCESS(status)) {
if (read_write == ACPI_READ) {
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
- "Value Read %8.8X%8.8X, Width %d\n",
+ "Value Read %8.8X%8.8X, Width %u\n",
ACPI_FORMAT_UINT64(*value),
obj_desc->common_field.
access_byte_width));
} else {
ACPI_DEBUG_PRINT((ACPI_DB_BFIELD,
- "Value Written %8.8X%8.8X, Width %d\n",
+ "Value Written %8.8X%8.8X, Width %u\n",
ACPI_FORMAT_UINT64(*value),
obj_desc->common_field.
access_byte_width));
@@ -559,7 +564,7 @@ acpi_ex_field_datum_io(union acpi_operand_object *obj_desc,
* FUNCTION: acpi_ex_write_with_update_rule
*
* PARAMETERS: obj_desc - Field to be written
- * Mask - bitmask within field datum
+ * mask - bitmask within field datum
* field_value - Value to write
* field_datum_byte_offset - Offset of datum within field
*
@@ -571,13 +576,12 @@ acpi_ex_field_datum_io(union acpi_operand_object *obj_desc,
acpi_status
acpi_ex_write_with_update_rule(union acpi_operand_object *obj_desc,
- acpi_integer mask,
- acpi_integer field_value,
- u32 field_datum_byte_offset)
+ u64 mask,
+ u64 field_value, u32 field_datum_byte_offset)
{
acpi_status status = AE_OK;
- acpi_integer merged_value;
- acpi_integer current_value;
+ u64 merged_value;
+ u64 current_value;
ACPI_FUNCTION_TRACE_U32(ex_write_with_update_rule, mask);
@@ -587,7 +591,7 @@ acpi_ex_write_with_update_rule(union acpi_operand_object *obj_desc,
/* If the mask is all ones, we don't need to worry about the update rule */
- if (mask != ACPI_INTEGER_MAX) {
+ if (mask != ACPI_UINT64_MAX) {
/* Decode the update rule */
@@ -635,7 +639,7 @@ acpi_ex_write_with_update_rule(union acpi_operand_object *obj_desc,
default:
ACPI_ERROR((AE_INFO,
- "Unknown UpdateRule value: %X",
+ "Unknown UpdateRule value: 0x%X",
(obj_desc->common_field.
field_flags &
AML_FIELD_UPDATE_RULE_MASK)));
@@ -664,7 +668,7 @@ acpi_ex_write_with_update_rule(union acpi_operand_object *obj_desc,
* FUNCTION: acpi_ex_extract_from_field
*
* PARAMETERS: obj_desc - Field to be read
- * Buffer - Where to store the field data
+ * buffer - Where to store the field data
* buffer_length - Length of Buffer
*
* RETURN: Status
@@ -678,13 +682,14 @@ acpi_ex_extract_from_field(union acpi_operand_object *obj_desc,
void *buffer, u32 buffer_length)
{
acpi_status status;
- acpi_integer raw_datum;
- acpi_integer merged_datum;
+ u64 raw_datum;
+ u64 merged_datum;
u32 field_offset = 0;
u32 buffer_offset = 0;
u32 buffer_tail_bits;
u32 datum_count;
u32 field_datum_count;
+ u32 access_bit_width;
u32 i;
ACPI_FUNCTION_TRACE(ex_extract_from_field);
@@ -694,21 +699,53 @@ acpi_ex_extract_from_field(union acpi_operand_object *obj_desc,
if (buffer_length <
ACPI_ROUND_BITS_UP_TO_BYTES(obj_desc->common_field.bit_length)) {
ACPI_ERROR((AE_INFO,
- "Field size %X (bits) is too large for buffer (%X)",
+ "Field size %u (bits) is too large for buffer (%u)",
obj_desc->common_field.bit_length, buffer_length));
return_ACPI_STATUS(AE_BUFFER_OVERFLOW);
}
+
ACPI_MEMSET(buffer, 0, buffer_length);
+ access_bit_width = ACPI_MUL_8(obj_desc->common_field.access_byte_width);
+
+ /* Handle the simple case here */
+
+ if ((obj_desc->common_field.start_field_bit_offset == 0) &&
+ (obj_desc->common_field.bit_length == access_bit_width)) {
+ if (buffer_length >= sizeof(u64)) {
+ status =
+ acpi_ex_field_datum_io(obj_desc, 0, buffer,
+ ACPI_READ);
+ } else {
+ /* Use raw_datum (u64) to handle buffers < 64 bits */
+
+ status =
+ acpi_ex_field_datum_io(obj_desc, 0, &raw_datum,
+ ACPI_READ);
+ ACPI_MEMCPY(buffer, &raw_datum, buffer_length);
+ }
+
+ return_ACPI_STATUS(status);
+ }
+
+/* TBD: Move to common setup code */
+
+ /* Field algorithm is limited to sizeof(u64), truncate if needed */
+
+ if (obj_desc->common_field.access_byte_width > sizeof(u64)) {
+ obj_desc->common_field.access_byte_width = sizeof(u64);
+ access_bit_width = sizeof(u64) * 8;
+ }
/* Compute the number of datums (access width data items) */
- datum_count = ACPI_ROUND_UP_TO(obj_desc->common_field.bit_length,
- obj_desc->common_field.access_bit_width);
+ datum_count =
+ ACPI_ROUND_UP_TO(obj_desc->common_field.bit_length,
+ access_bit_width);
+
field_datum_count = ACPI_ROUND_UP_TO(obj_desc->common_field.bit_length +
obj_desc->common_field.
start_field_bit_offset,
- obj_desc->common_field.
access_bit_width);
/* Priming read from the field */
@@ -743,12 +780,11 @@ acpi_ex_extract_from_field(union acpi_operand_object *obj_desc,
* This avoids the differences in behavior between different compilers
* concerning shift values larger than the target data width.
*/
- if ((obj_desc->common_field.access_bit_width -
- obj_desc->common_field.start_field_bit_offset) <
+ if (access_bit_width -
+ obj_desc->common_field.start_field_bit_offset <
ACPI_INTEGER_BIT_SIZE) {
merged_datum |=
- raw_datum << (obj_desc->common_field.
- access_bit_width -
+ raw_datum << (access_bit_width -
obj_desc->common_field.
start_field_bit_offset);
}
@@ -770,8 +806,7 @@ acpi_ex_extract_from_field(union acpi_operand_object *obj_desc,
/* Mask off any extra bits in the last datum */
- buffer_tail_bits = obj_desc->common_field.bit_length %
- obj_desc->common_field.access_bit_width;
+ buffer_tail_bits = obj_desc->common_field.bit_length % access_bit_width;
if (buffer_tail_bits) {
merged_datum &= ACPI_MASK_BITS_ABOVE(buffer_tail_bits);
}
@@ -790,7 +825,7 @@ acpi_ex_extract_from_field(union acpi_operand_object *obj_desc,
* FUNCTION: acpi_ex_insert_into_field
*
* PARAMETERS: obj_desc - Field to be written
- * Buffer - Data to be written
+ * buffer - Data to be written
* buffer_length - Length of Buffer
*
* RETURN: Status
@@ -803,19 +838,20 @@ acpi_status
acpi_ex_insert_into_field(union acpi_operand_object *obj_desc,
void *buffer, u32 buffer_length)
{
+ void *new_buffer;
acpi_status status;
- acpi_integer mask;
- acpi_integer width_mask;
- acpi_integer merged_datum;
- acpi_integer raw_datum = 0;
+ u64 mask;
+ u64 width_mask;
+ u64 merged_datum;
+ u64 raw_datum = 0;
u32 field_offset = 0;
u32 buffer_offset = 0;
u32 buffer_tail_bits;
u32 datum_count;
u32 field_datum_count;
- u32 i;
+ u32 access_bit_width;
u32 required_length;
- void *new_buffer;
+ u32 i;
ACPI_FUNCTION_TRACE(ex_insert_into_field);
@@ -826,7 +862,7 @@ acpi_ex_insert_into_field(union acpi_operand_object *obj_desc,
ACPI_ROUND_BITS_UP_TO_BYTES(obj_desc->common_field.bit_length);
/*
* We must have a buffer that is at least as long as the field
- * we are writing to. This is because individual fields are
+ * we are writing to. This is because individual fields are
* indivisible and partial writes are not supported -- as per
* the ACPI specification.
*/
@@ -841,7 +877,7 @@ acpi_ex_insert_into_field(union acpi_operand_object *obj_desc,
/*
* Copy the original data to the new buffer, starting
- * at Byte zero. All unused (upper) bytes of the
+ * at Byte zero. All unused (upper) bytes of the
* buffer will be 0.
*/
ACPI_MEMCPY((char *)new_buffer, (char *)buffer, buffer_length);
@@ -849,17 +885,24 @@ acpi_ex_insert_into_field(union acpi_operand_object *obj_desc,
buffer_length = required_length;
}
+/* TBD: Move to common setup code */
+
+ /* Algo is limited to sizeof(u64), so cut the access_byte_width */
+ if (obj_desc->common_field.access_byte_width > sizeof(u64)) {
+ obj_desc->common_field.access_byte_width = sizeof(u64);
+ }
+
+ access_bit_width = ACPI_MUL_8(obj_desc->common_field.access_byte_width);
+
/*
* Create the bitmasks used for bit insertion.
* Note: This if/else is used to bypass compiler differences with the
* shift operator
*/
- if (obj_desc->common_field.access_bit_width == ACPI_INTEGER_BIT_SIZE) {
- width_mask = ACPI_INTEGER_MAX;
+ if (access_bit_width == ACPI_INTEGER_BIT_SIZE) {
+ width_mask = ACPI_UINT64_MAX;
} else {
- width_mask =
- ACPI_MASK_BITS_ABOVE(obj_desc->common_field.
- access_bit_width);
+ width_mask = ACPI_MASK_BITS_ABOVE(access_bit_width);
}
mask = width_mask &
@@ -868,12 +911,11 @@ acpi_ex_insert_into_field(union acpi_operand_object *obj_desc,
/* Compute the number of datums (access width data items) */
datum_count = ACPI_ROUND_UP_TO(obj_desc->common_field.bit_length,
- obj_desc->common_field.access_bit_width);
+ access_bit_width);
field_datum_count = ACPI_ROUND_UP_TO(obj_desc->common_field.bit_length +
obj_desc->common_field.
start_field_bit_offset,
- obj_desc->common_field.
access_bit_width);
/* Get initial Datum from the input buffer */
@@ -910,12 +952,11 @@ acpi_ex_insert_into_field(union acpi_operand_object *obj_desc,
* This avoids the differences in behavior between different compilers
* concerning shift values larger than the target data width.
*/
- if ((obj_desc->common_field.access_bit_width -
+ if ((access_bit_width -
obj_desc->common_field.start_field_bit_offset) <
ACPI_INTEGER_BIT_SIZE) {
merged_datum =
- raw_datum >> (obj_desc->common_field.
- access_bit_width -
+ raw_datum >> (access_bit_width -
obj_desc->common_field.
start_field_bit_offset);
} else {
@@ -934,6 +975,7 @@ acpi_ex_insert_into_field(union acpi_operand_object *obj_desc,
ACPI_MEMCPY(&raw_datum, ((char *)buffer) + buffer_offset,
ACPI_MIN(obj_desc->common_field.access_byte_width,
buffer_length - buffer_offset));
+
merged_datum |=
raw_datum << obj_desc->common_field.start_field_bit_offset;
}
@@ -942,7 +984,7 @@ acpi_ex_insert_into_field(union acpi_operand_object *obj_desc,
buffer_tail_bits = (obj_desc->common_field.bit_length +
obj_desc->common_field.start_field_bit_offset) %
- obj_desc->common_field.access_bit_width;
+ access_bit_width;
if (buffer_tail_bits) {
mask &= ACPI_MASK_BITS_ABOVE(buffer_tail_bits);
}
@@ -954,7 +996,7 @@ acpi_ex_insert_into_field(union acpi_operand_object *obj_desc,
mask, merged_datum,
field_offset);
- exit:
+exit:
/* Free temporary buffer if we used one */
if (new_buffer) {
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 08:38:52 +0000