diff options
Diffstat (limited to 'drivers/acpi/parser/psargs.c')
| -rw-r--r-- | drivers/acpi/parser/psargs.c | 376 |
1 files changed, 167 insertions, 209 deletions
diff --git a/drivers/acpi/parser/psargs.c b/drivers/acpi/parser/psargs.c index b7ac68cc9e1..5858188f94a 100644 --- a/drivers/acpi/parser/psargs.c +++ b/drivers/acpi/parser/psargs.c @@ -41,25 +41,20 @@ * POSSIBILITY OF SUCH DAMAGES. */ - #include <acpi/acpi.h> #include <acpi/acparser.h> #include <acpi/amlcode.h> #include <acpi/acnamesp.h> #define _COMPONENT ACPI_PARSER - ACPI_MODULE_NAME ("psargs") +ACPI_MODULE_NAME("psargs") /* Local prototypes */ - static u32 -acpi_ps_get_next_package_length ( - struct acpi_parse_state *parser_state); - -static union acpi_parse_object * -acpi_ps_get_next_field ( - struct acpi_parse_state *parser_state); +acpi_ps_get_next_package_length(struct acpi_parse_state *parser_state); +static union acpi_parse_object *acpi_ps_get_next_field(struct acpi_parse_state + *parser_state); /******************************************************************************* * @@ -75,49 +70,43 @@ acpi_ps_get_next_field ( ******************************************************************************/ static u32 -acpi_ps_get_next_package_length ( - struct acpi_parse_state *parser_state) +acpi_ps_get_next_package_length(struct acpi_parse_state *parser_state) { - u32 encoded_length; - u32 length = 0; + u32 encoded_length; + u32 length = 0; + ACPI_FUNCTION_TRACE("ps_get_next_package_length"); - ACPI_FUNCTION_TRACE ("ps_get_next_package_length"); - - - encoded_length = (u32) ACPI_GET8 (parser_state->aml); + encoded_length = (u32) ACPI_GET8(parser_state->aml); parser_state->aml++; - switch (encoded_length >> 6) /* bits 6-7 contain encoding scheme */ { - case 0: /* 1-byte encoding (bits 0-5) */ + switch (encoded_length >> 6) { /* bits 6-7 contain encoding scheme */ + case 0: /* 1-byte encoding (bits 0-5) */ length = (encoded_length & 0x3F); break; + case 1: /* 2-byte encoding (next byte + bits 0-3) */ - case 1: /* 2-byte encoding (next byte + bits 0-3) */ - - length = ((ACPI_GET8 (parser_state->aml) << 04) | - (encoded_length & 0x0F)); + length = ((ACPI_GET8(parser_state->aml) << 04) | + (encoded_length & 0x0F)); parser_state->aml++; break; + case 2: /* 3-byte encoding (next 2 bytes + bits 0-3) */ - case 2: /* 3-byte encoding (next 2 bytes + bits 0-3) */ - - length = ((ACPI_GET8 (parser_state->aml + 1) << 12) | - (ACPI_GET8 (parser_state->aml) << 04) | - (encoded_length & 0x0F)); + length = ((ACPI_GET8(parser_state->aml + 1) << 12) | + (ACPI_GET8(parser_state->aml) << 04) | + (encoded_length & 0x0F)); parser_state->aml += 2; break; + case 3: /* 4-byte encoding (next 3 bytes + bits 0-3) */ - case 3: /* 4-byte encoding (next 3 bytes + bits 0-3) */ - - length = ((ACPI_GET8 (parser_state->aml + 2) << 20) | - (ACPI_GET8 (parser_state->aml + 1) << 12) | - (ACPI_GET8 (parser_state->aml) << 04) | - (encoded_length & 0x0F)); + length = ((ACPI_GET8(parser_state->aml + 2) << 20) | + (ACPI_GET8(parser_state->aml + 1) << 12) | + (ACPI_GET8(parser_state->aml) << 04) | + (encoded_length & 0x0F)); parser_state->aml += 3; break; @@ -127,10 +116,9 @@ acpi_ps_get_next_package_length ( break; } - return_VALUE (length); + return_VALUE(length); } - /******************************************************************************* * * FUNCTION: acpi_ps_get_next_package_end @@ -144,25 +132,21 @@ acpi_ps_get_next_package_length ( * ******************************************************************************/ -u8 * -acpi_ps_get_next_package_end ( - struct acpi_parse_state *parser_state) +u8 *acpi_ps_get_next_package_end(struct acpi_parse_state *parser_state) { - u8 *start = parser_state->aml; - acpi_native_uint length; - - - ACPI_FUNCTION_TRACE ("ps_get_next_package_end"); + u8 *start = parser_state->aml; + acpi_native_uint length; + ACPI_FUNCTION_TRACE("ps_get_next_package_end"); /* Function below changes parser_state->Aml */ - length = (acpi_native_uint) acpi_ps_get_next_package_length (parser_state); + length = + (acpi_native_uint) acpi_ps_get_next_package_length(parser_state); - return_PTR (start + length); /* end of package */ + return_PTR(start + length); /* end of package */ } - /******************************************************************************* * * FUNCTION: acpi_ps_get_next_namestring @@ -178,20 +162,16 @@ acpi_ps_get_next_package_end ( * ******************************************************************************/ -char * -acpi_ps_get_next_namestring ( - struct acpi_parse_state *parser_state) +char *acpi_ps_get_next_namestring(struct acpi_parse_state *parser_state) { - u8 *start = parser_state->aml; - u8 *end = parser_state->aml; - - - ACPI_FUNCTION_TRACE ("ps_get_next_namestring"); + u8 *start = parser_state->aml; + u8 *end = parser_state->aml; + ACPI_FUNCTION_TRACE("ps_get_next_namestring"); /* Handle multiple prefix characters */ - while (acpi_ps_is_prefix_char (ACPI_GET8 (end))) { + while (acpi_ps_is_prefix_char(ACPI_GET8(end))) { /* Include prefix '\\' or '^' */ end++; @@ -199,7 +179,7 @@ acpi_ps_get_next_namestring ( /* Decode the path */ - switch (ACPI_GET8 (end)) { + switch (ACPI_GET8(end)) { case 0: /* null_name */ @@ -221,7 +201,7 @@ acpi_ps_get_next_namestring ( /* Multiple name segments, 4 chars each */ - end += 2 + ((acpi_size) ACPI_GET8 (end + 1) * ACPI_NAME_SIZE); + end += 2 + ((acpi_size) ACPI_GET8(end + 1) * ACPI_NAME_SIZE); break; default: @@ -232,11 +212,10 @@ acpi_ps_get_next_namestring ( break; } - parser_state->aml = (u8*) end; - return_PTR ((char *) start); + parser_state->aml = (u8 *) end; + return_PTR((char *)start); } - /******************************************************************************* * * FUNCTION: acpi_ps_get_next_namepath @@ -259,24 +238,20 @@ acpi_ps_get_next_namestring ( ******************************************************************************/ acpi_status -acpi_ps_get_next_namepath ( - struct acpi_walk_state *walk_state, - struct acpi_parse_state *parser_state, - union acpi_parse_object *arg, - u8 method_call) +acpi_ps_get_next_namepath(struct acpi_walk_state *walk_state, + struct acpi_parse_state *parser_state, + union acpi_parse_object *arg, u8 method_call) { - char *path; - union acpi_parse_object *name_op; - acpi_status status = AE_OK; - union acpi_operand_object *method_desc; - struct acpi_namespace_node *node; - union acpi_generic_state scope_info; + char *path; + union acpi_parse_object *name_op; + acpi_status status = AE_OK; + union acpi_operand_object *method_desc; + struct acpi_namespace_node *node; + union acpi_generic_state scope_info; + ACPI_FUNCTION_TRACE("ps_get_next_namepath"); - ACPI_FUNCTION_TRACE ("ps_get_next_namepath"); - - - path = acpi_ps_get_next_namestring (parser_state); + path = acpi_ps_get_next_namestring(parser_state); /* Null path case is allowed */ @@ -296,49 +271,50 @@ acpi_ps_get_next_namepath ( * parent tree, but don't open a new scope -- we just want to lookup the * object (MUST BE mode EXECUTE to perform upsearch) */ - status = acpi_ns_lookup (&scope_info, path, ACPI_TYPE_ANY, - ACPI_IMODE_EXECUTE, - ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, - NULL, &node); - if (ACPI_SUCCESS (status) && method_call) { + status = acpi_ns_lookup(&scope_info, path, ACPI_TYPE_ANY, + ACPI_IMODE_EXECUTE, + ACPI_NS_SEARCH_PARENT | + ACPI_NS_DONT_OPEN_SCOPE, NULL, &node); + if (ACPI_SUCCESS(status) && method_call) { if (node->type == ACPI_TYPE_METHOD) { /* This name is actually a control method invocation */ - method_desc = acpi_ns_get_attached_object (node); - ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, - "Control Method - %p Desc %p Path=%p\n", - node, method_desc, path)); + method_desc = acpi_ns_get_attached_object(node); + ACPI_DEBUG_PRINT((ACPI_DB_PARSE, + "Control Method - %p Desc %p Path=%p\n", + node, method_desc, path)); - name_op = acpi_ps_alloc_op (AML_INT_NAMEPATH_OP); + name_op = acpi_ps_alloc_op(AML_INT_NAMEPATH_OP); if (!name_op) { - return_ACPI_STATUS (AE_NO_MEMORY); + return_ACPI_STATUS(AE_NO_MEMORY); } /* Change arg into a METHOD CALL and attach name to it */ - acpi_ps_init_op (arg, AML_INT_METHODCALL_OP); + acpi_ps_init_op(arg, AML_INT_METHODCALL_OP); name_op->common.value.name = path; /* Point METHODCALL/NAME to the METHOD Node */ name_op->common.node = node; - acpi_ps_append_arg (arg, name_op); + acpi_ps_append_arg(arg, name_op); if (!method_desc) { - ACPI_REPORT_ERROR (( - "ps_get_next_namepath: Control Method %p has no attached object\n", - node)); - return_ACPI_STATUS (AE_AML_INTERNAL); + ACPI_REPORT_ERROR(("ps_get_next_namepath: Control Method %p has no attached object\n", node)); + return_ACPI_STATUS(AE_AML_INTERNAL); } - ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, - "Control Method - %p Args %X\n", - node, method_desc->method.param_count)); + ACPI_DEBUG_PRINT((ACPI_DB_PARSE, + "Control Method - %p Args %X\n", + node, + method_desc->method. + param_count)); /* Get the number of arguments to expect */ - walk_state->arg_count = method_desc->method.param_count; - return_ACPI_STATUS (AE_OK); + walk_state->arg_count = + method_desc->method.param_count; + return_ACPI_STATUS(AE_OK); } /* @@ -348,25 +324,26 @@ acpi_ps_get_next_namepath ( */ } - if (ACPI_FAILURE (status)) { + if (ACPI_FAILURE(status)) { /* * 1) Any error other than NOT_FOUND is always severe * 2) NOT_FOUND is only important if we are executing a method. * 3) If executing a cond_ref_of opcode, NOT_FOUND is ok. */ - if ((((walk_state->parse_flags & ACPI_PARSE_MODE_MASK) == ACPI_PARSE_EXECUTE) && - (status == AE_NOT_FOUND) && - (walk_state->op->common.aml_opcode != AML_COND_REF_OF_OP)) || - - (status != AE_NOT_FOUND)) { - ACPI_REPORT_NSERROR (path, status); - - acpi_os_printf ("search_node %p start_node %p return_node %p\n", - scope_info.scope.node, parser_state->start_node, node); - - - } - else { + if ((((walk_state-> + parse_flags & ACPI_PARSE_MODE_MASK) == + ACPI_PARSE_EXECUTE) && (status == AE_NOT_FOUND) + && (walk_state->op->common.aml_opcode != + AML_COND_REF_OF_OP)) + || (status != AE_NOT_FOUND)) { + ACPI_REPORT_NSERROR(path, status); + + acpi_os_printf + ("search_node %p start_node %p return_node %p\n", + scope_info.scope.node, + parser_state->start_node, node); + + } else { /* * We got a NOT_FOUND during table load or we encountered * a cond_ref_of(x) where the target does not exist. @@ -381,13 +358,12 @@ acpi_ps_get_next_namepath ( * Regardless of success/failure above, * Just initialize the Op with the pathname. */ - acpi_ps_init_op (arg, AML_INT_NAMEPATH_OP); + acpi_ps_init_op(arg, AML_INT_NAMEPATH_OP); arg->common.value.name = path; - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ps_get_next_simple_arg @@ -403,87 +379,81 @@ acpi_ps_get_next_namepath ( ******************************************************************************/ void -acpi_ps_get_next_simple_arg ( - struct acpi_parse_state *parser_state, - u32 arg_type, - union acpi_parse_object *arg) +acpi_ps_get_next_simple_arg(struct acpi_parse_state *parser_state, + u32 arg_type, union acpi_parse_object *arg) { - ACPI_FUNCTION_TRACE_U32 ("ps_get_next_simple_arg", arg_type); - + ACPI_FUNCTION_TRACE_U32("ps_get_next_simple_arg", arg_type); switch (arg_type) { case ARGP_BYTEDATA: - acpi_ps_init_op (arg, AML_BYTE_OP); - arg->common.value.integer = (u32) ACPI_GET8 (parser_state->aml); + acpi_ps_init_op(arg, AML_BYTE_OP); + arg->common.value.integer = (u32) ACPI_GET8(parser_state->aml); parser_state->aml++; break; - case ARGP_WORDDATA: - acpi_ps_init_op (arg, AML_WORD_OP); + acpi_ps_init_op(arg, AML_WORD_OP); /* Get 2 bytes from the AML stream */ - ACPI_MOVE_16_TO_32 (&arg->common.value.integer, parser_state->aml); + ACPI_MOVE_16_TO_32(&arg->common.value.integer, + parser_state->aml); parser_state->aml += 2; break; - case ARGP_DWORDDATA: - acpi_ps_init_op (arg, AML_DWORD_OP); + acpi_ps_init_op(arg, AML_DWORD_OP); /* Get 4 bytes from the AML stream */ - ACPI_MOVE_32_TO_32 (&arg->common.value.integer, parser_state->aml); + ACPI_MOVE_32_TO_32(&arg->common.value.integer, + parser_state->aml); parser_state->aml += 4; break; - case ARGP_QWORDDATA: - acpi_ps_init_op (arg, AML_QWORD_OP); + acpi_ps_init_op(arg, AML_QWORD_OP); /* Get 8 bytes from the AML stream */ - ACPI_MOVE_64_TO_64 (&arg->common.value.integer, parser_state->aml); + ACPI_MOVE_64_TO_64(&arg->common.value.integer, + parser_state->aml); parser_state->aml += 8; break; - case ARGP_CHARLIST: - acpi_ps_init_op (arg, AML_STRING_OP); - arg->common.value.string = (char *) parser_state->aml; + acpi_ps_init_op(arg, AML_STRING_OP); + arg->common.value.string = (char *)parser_state->aml; - while (ACPI_GET8 (parser_state->aml) != '\0') { + while (ACPI_GET8(parser_state->aml) != '\0') { parser_state->aml++; } parser_state->aml++; break; - case ARGP_NAME: case ARGP_NAMESTRING: - acpi_ps_init_op (arg, AML_INT_NAMEPATH_OP); - arg->common.value.name = acpi_ps_get_next_namestring (parser_state); + acpi_ps_init_op(arg, AML_INT_NAMEPATH_OP); + arg->common.value.name = + acpi_ps_get_next_namestring(parser_state); break; - default: - ACPI_REPORT_ERROR (("Invalid arg_type %X\n", arg_type)); + ACPI_REPORT_ERROR(("Invalid arg_type %X\n", arg_type)); break; } return_VOID; } - /******************************************************************************* * * FUNCTION: acpi_ps_get_next_field @@ -496,24 +466,21 @@ acpi_ps_get_next_simple_arg ( * ******************************************************************************/ -static union acpi_parse_object * -acpi_ps_get_next_field ( - struct acpi_parse_state *parser_state) +static union acpi_parse_object *acpi_ps_get_next_field(struct acpi_parse_state + *parser_state) { - u32 aml_offset = (u32) - ACPI_PTR_DIFF (parser_state->aml, - parser_state->aml_start); - union acpi_parse_object *field; - u16 opcode; - u32 name; - - - ACPI_FUNCTION_TRACE ("ps_get_next_field"); + u32 aml_offset = (u32) + ACPI_PTR_DIFF(parser_state->aml, + parser_state->aml_start); + union acpi_parse_object *field; + u16 opcode; + u32 name; + ACPI_FUNCTION_TRACE("ps_get_next_field"); /* Determine field type */ - switch (ACPI_GET8 (parser_state->aml)) { + switch (ACPI_GET8(parser_state->aml)) { default: opcode = AML_INT_NAMEDFIELD_OP; @@ -534,9 +501,9 @@ acpi_ps_get_next_field ( /* Allocate a new field op */ - field = acpi_ps_alloc_op (opcode); + field = acpi_ps_alloc_op(opcode); if (!field) { - return_PTR (NULL); + return_PTR(NULL); } field->common.aml_offset = aml_offset; @@ -548,33 +515,34 @@ acpi_ps_get_next_field ( /* Get the 4-character name */ - ACPI_MOVE_32_TO_32 (&name, parser_state->aml); - acpi_ps_set_name (field, name); + ACPI_MOVE_32_TO_32(&name, parser_state->aml); + acpi_ps_set_name(field, name); parser_state->aml += ACPI_NAME_SIZE; /* Get the length which is encoded as a package length */ - field->common.value.size = acpi_ps_get_next_package_length (parser_state); + field->common.value.size = + acpi_ps_get_next_package_length(parser_state); break; - case AML_INT_RESERVEDFIELD_OP: /* Get the length which is encoded as a package length */ - field->common.value.size = acpi_ps_get_next_package_length (parser_state); + field->common.value.size = + acpi_ps_get_next_package_length(parser_state); break; - case AML_INT_ACCESSFIELD_OP: /* * Get access_type and access_attrib and merge into the field Op * access_type is first operand, access_attribute is second */ - field->common.value.integer = (ACPI_GET8 (parser_state->aml) << 8); + field->common.value.integer = + (ACPI_GET8(parser_state->aml) << 8); parser_state->aml++; - field->common.value.integer |= ACPI_GET8 (parser_state->aml); + field->common.value.integer |= ACPI_GET8(parser_state->aml); parser_state->aml++; break; @@ -584,10 +552,9 @@ acpi_ps_get_next_field ( break; } - return_PTR (field); + return_PTR(field); } - /******************************************************************************* * * FUNCTION: acpi_ps_get_next_arg @@ -605,21 +572,17 @@ acpi_ps_get_next_field ( ******************************************************************************/ acpi_status -acpi_ps_get_next_arg ( - struct acpi_walk_state *walk_state, - struct acpi_parse_state *parser_state, - u32 arg_type, - union acpi_parse_object **return_arg) +acpi_ps_get_next_arg(struct acpi_walk_state *walk_state, + struct acpi_parse_state *parser_state, + u32 arg_type, union acpi_parse_object **return_arg) { - union acpi_parse_object *arg = NULL; - union acpi_parse_object *prev = NULL; - union acpi_parse_object *field; - u32 subop; - acpi_status status = AE_OK; - - - ACPI_FUNCTION_TRACE_PTR ("ps_get_next_arg", parser_state); + union acpi_parse_object *arg = NULL; + union acpi_parse_object *prev = NULL; + union acpi_parse_object *field; + u32 subop; + acpi_status status = AE_OK; + ACPI_FUNCTION_TRACE_PTR("ps_get_next_arg", parser_state); switch (arg_type) { case ARGP_BYTEDATA: @@ -631,37 +594,35 @@ acpi_ps_get_next_arg ( /* Constants, strings, and namestrings are all the same size */ - arg = acpi_ps_alloc_op (AML_BYTE_OP); + arg = acpi_ps_alloc_op(AML_BYTE_OP); if (!arg) { - return_ACPI_STATUS (AE_NO_MEMORY); + return_ACPI_STATUS(AE_NO_MEMORY); } - acpi_ps_get_next_simple_arg (parser_state, arg_type, arg); + acpi_ps_get_next_simple_arg(parser_state, arg_type, arg); break; - case ARGP_PKGLENGTH: /* Package length, nothing returned */ - parser_state->pkg_end = acpi_ps_get_next_package_end (parser_state); + parser_state->pkg_end = + acpi_ps_get_next_package_end(parser_state); break; - case ARGP_FIELDLIST: if (parser_state->aml < parser_state->pkg_end) { /* Non-empty list */ while (parser_state->aml < parser_state->pkg_end) { - field = acpi_ps_get_next_field (parser_state); + field = acpi_ps_get_next_field(parser_state); if (!field) { - return_ACPI_STATUS (AE_NO_MEMORY); + return_ACPI_STATUS(AE_NO_MEMORY); } if (prev) { prev->common.next = field; - } - else { + } else { arg = field; } prev = field; @@ -673,21 +634,21 @@ acpi_ps_get_next_arg ( } break; - case ARGP_BYTELIST: if (parser_state->aml < parser_state->pkg_end) { /* Non-empty list */ - arg = acpi_ps_alloc_op (AML_INT_BYTELIST_OP); + arg = acpi_ps_alloc_op(AML_INT_BYTELIST_OP); if (!arg) { - return_ACPI_STATUS (AE_NO_MEMORY); + return_ACPI_STATUS(AE_NO_MEMORY); } /* Fill in bytelist data */ arg->common.value.size = (u32) - ACPI_PTR_DIFF (parser_state->pkg_end, parser_state->aml); + ACPI_PTR_DIFF(parser_state->pkg_end, + parser_state->aml); arg->named.data = parser_state->aml; /* Skip to End of byte data */ @@ -696,32 +657,31 @@ acpi_ps_get_next_arg ( } break; - case ARGP_TARGET: case ARGP_SUPERNAME: case ARGP_SIMPLENAME: - subop = acpi_ps_peek_opcode (parser_state); - if (subop == 0 || - acpi_ps_is_leading_char (subop) || - acpi_ps_is_prefix_char (subop)) { + subop = acpi_ps_peek_opcode(parser_state); + if (subop == 0 || + acpi_ps_is_leading_char(subop) || + acpi_ps_is_prefix_char(subop)) { /* null_name or name_string */ - arg = acpi_ps_alloc_op (AML_INT_NAMEPATH_OP); + arg = acpi_ps_alloc_op(AML_INT_NAMEPATH_OP); if (!arg) { - return_ACPI_STATUS (AE_NO_MEMORY); + return_ACPI_STATUS(AE_NO_MEMORY); } - status = acpi_ps_get_next_namepath (walk_state, parser_state, arg, 0); - } - else { + status = + acpi_ps_get_next_namepath(walk_state, parser_state, + arg, 0); + } else { /* Single complex argument, nothing returned */ walk_state->arg_count = 1; } break; - case ARGP_DATAOBJ: case ARGP_TERMARG: @@ -730,7 +690,6 @@ acpi_ps_get_next_arg ( walk_state->arg_count = 1; break; - case ARGP_DATAOBJLIST: case ARGP_TERMLIST: case ARGP_OBJLIST: @@ -742,14 +701,13 @@ acpi_ps_get_next_arg ( } break; - default: - ACPI_REPORT_ERROR (("Invalid arg_type: %X\n", arg_type)); + ACPI_REPORT_ERROR(("Invalid arg_type: %X\n", arg_type)); status = AE_AML_OPERAND_TYPE; break; } *return_arg = arg; - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } |