diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/dispatcher/dsmethod.c | 69 | ||||
| -rw-r--r-- | drivers/acpi/dispatcher/dswload.c | 5 | ||||
| -rw-r--r-- | drivers/acpi/parser/psparse.c | 23 | ||||
| -rw-r--r-- | drivers/acpi/parser/psxface.c | 14 | ||||
| -rw-r--r-- | drivers/acpi/resources/rsaddr.c | 542 | ||||
| -rw-r--r-- | drivers/acpi/resources/rsirq.c | 21 | ||||
| -rw-r--r-- | drivers/acpi/utilities/utmisc.c | 15 |
7 files changed, 331 insertions, 358 deletions
diff --git a/drivers/acpi/dispatcher/dsmethod.c b/drivers/acpi/dispatcher/dsmethod.c index 77fcfc3070db..36c1ca0b9adb 100644 --- a/drivers/acpi/dispatcher/dsmethod.c +++ b/drivers/acpi/dispatcher/dsmethod.c @@ -207,6 +207,13 @@ acpi_ds_begin_method_execution(struct acpi_namespace_node *method_node, return_ACPI_STATUS(AE_NULL_ENTRY); } + /* Prevent wraparound of thread count */ + + if (obj_desc->method.thread_count == ACPI_UINT8_MAX) { + ACPI_REPORT_ERROR(("Method reached maximum reentrancy limit (255)\n")); + return_ACPI_STATUS(AE_AML_METHOD_LIMIT); + } + /* * If there is a concurrency limit on this method, we need to * obtain a unit from the method semaphore. @@ -237,6 +244,18 @@ acpi_ds_begin_method_execution(struct acpi_namespace_node *method_node, } /* + * Allocate an Owner ID for this method, only if this is the first thread + * to begin concurrent execution. We only need one owner_id, even if the + * method is invoked recursively. + */ + if (!obj_desc->method.owner_id) { + status = acpi_ut_allocate_owner_id(&obj_desc->method.owner_id); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + } + + /* * Increment the method parse tree thread count since it has been * reentered one more time (even if it is the same thread) */ @@ -289,11 +308,6 @@ acpi_ds_call_control_method(struct acpi_thread_state *thread, return_ACPI_STATUS(AE_NULL_OBJECT); } - status = acpi_ut_allocate_owner_id(&obj_desc->method.owner_id); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - /* Init for new method, wait on concurrency semaphore */ status = acpi_ds_begin_method_execution(method_node, obj_desc, @@ -345,9 +359,8 @@ acpi_ds_call_control_method(struct acpi_thread_state *thread, } /* * The resolved arguments were put on the previous walk state's operand - * stack. Operands on the previous walk state stack always - * start at index 0. - * Null terminate the list of arguments + * stack. Operands on the previous walk state stack always + * start at index 0. Also, null terminate the list of arguments */ this_walk_state->operands[this_walk_state->num_operands] = NULL; @@ -380,21 +393,20 @@ acpi_ds_call_control_method(struct acpi_thread_state *thread, if (obj_desc->method.method_flags & AML_METHOD_INTERNAL_ONLY) { status = obj_desc->method.implementation(next_walk_state); - return_ACPI_STATUS(status); } - return_ACPI_STATUS(AE_OK); - - /* On error, we must delete the new walk state */ + return_ACPI_STATUS(status); cleanup: - acpi_ut_release_owner_id(&obj_desc->method.owner_id); - if (next_walk_state && (next_walk_state->method_desc)) { - /* Decrement the thread count on the method parse tree */ + /* Decrement the thread count on the method parse tree */ + if (next_walk_state && (next_walk_state->method_desc)) { next_walk_state->method_desc->method.thread_count--; } - (void)acpi_ds_terminate_control_method(next_walk_state); + + /* On error, we must delete the new walk state */ + + acpi_ds_terminate_control_method(next_walk_state); acpi_ds_delete_walk_state(next_walk_state); return_ACPI_STATUS(status); } @@ -479,7 +491,7 @@ acpi_ds_restart_control_method(struct acpi_walk_state *walk_state, * * PARAMETERS: walk_state - State of the method * - * RETURN: Status + * RETURN: None * * DESCRIPTION: Terminate a control method. Delete everything that the method * created, delete all locals and arguments, and delete the parse @@ -487,7 +499,7 @@ acpi_ds_restart_control_method(struct acpi_walk_state *walk_state, * ******************************************************************************/ -acpi_status acpi_ds_terminate_control_method(struct acpi_walk_state *walk_state) +void acpi_ds_terminate_control_method(struct acpi_walk_state *walk_state) { union acpi_operand_object *obj_desc; struct acpi_namespace_node *method_node; @@ -496,14 +508,14 @@ acpi_status acpi_ds_terminate_control_method(struct acpi_walk_state *walk_state) ACPI_FUNCTION_TRACE_PTR("ds_terminate_control_method", walk_state); if (!walk_state) { - return (AE_BAD_PARAMETER); + return_VOID; } /* The current method object was saved in the walk state */ obj_desc = walk_state->method_desc; if (!obj_desc) { - return_ACPI_STATUS(AE_OK); + return_VOID; } /* Delete all arguments and locals */ @@ -517,7 +529,7 @@ acpi_status acpi_ds_terminate_control_method(struct acpi_walk_state *walk_state) */ status = acpi_ut_acquire_mutex(ACPI_MTX_PARSER); if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); + return_VOID; } /* Signal completion of the execution of this method if necessary */ @@ -528,7 +540,6 @@ acpi_status acpi_ds_terminate_control_method(struct acpi_walk_state *walk_state) semaphore, 1); if (ACPI_FAILURE(status)) { ACPI_REPORT_ERROR(("Could not signal method semaphore\n")); - status = AE_OK; /* Ignore error and continue cleanup */ } @@ -539,9 +550,8 @@ acpi_status acpi_ds_terminate_control_method(struct acpi_walk_state *walk_state) "*** Not deleting method namespace, there are still %d threads\n", walk_state->method_desc->method. thread_count)); - } + } else { /* This is the last executing thread */ - if (!walk_state->method_desc->method.thread_count) { /* * Support to dynamically change a method from not_serialized to * Serialized if it appears that the method is written foolishly and @@ -574,7 +584,7 @@ acpi_status acpi_ds_terminate_control_method(struct acpi_walk_state *walk_state) */ status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); + goto exit; } if (method_node->child) { @@ -590,12 +600,9 @@ acpi_status acpi_ds_terminate_control_method(struct acpi_walk_state *walk_state) status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); acpi_ut_release_owner_id(&walk_state->method_desc->method. owner_id); - - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } } - status = acpi_ut_release_mutex(ACPI_MTX_PARSER); - return_ACPI_STATUS(status); + exit: + (void)acpi_ut_release_mutex(ACPI_MTX_PARSER); + return_VOID; } diff --git a/drivers/acpi/dispatcher/dswload.c b/drivers/acpi/dispatcher/dswload.c index 362bbcfc1718..411731261c29 100644 --- a/drivers/acpi/dispatcher/dswload.c +++ b/drivers/acpi/dispatcher/dswload.c @@ -486,8 +486,10 @@ acpi_ds_load2_begin_op(struct acpi_walk_state * walk_state, if ((!(walk_state->op_info->flags & AML_NSOPCODE) && (walk_state->opcode != AML_INT_NAMEPATH_OP)) || (!(walk_state->op_info->flags & AML_NAMED))) { +#ifdef ACPI_ENABLE_MODULE_LEVEL_CODE if ((walk_state->op_info->class == AML_CLASS_EXECUTE) || (walk_state->op_info->class == AML_CLASS_CONTROL)) { + ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Begin/EXEC: %s (fl %8.8X)\n", walk_state->op_info->name, @@ -499,6 +501,7 @@ acpi_ds_load2_begin_op(struct acpi_walk_state * walk_state, acpi_ds_exec_begin_op(walk_state, out_op); return_ACPI_STATUS(status); } +#endif return_ACPI_STATUS(AE_OK); } @@ -731,6 +734,7 @@ acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state) if (!(walk_state->op_info->flags & AML_NSOBJECT)) { #ifndef ACPI_NO_METHOD_EXECUTION +#ifdef ACPI_ENABLE_MODULE_LEVEL_CODE /* No namespace object. Executable opcode? */ if ((walk_state->op_info->class == AML_CLASS_EXECUTE) || @@ -746,6 +750,7 @@ acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state) return_ACPI_STATUS(status); } #endif +#endif return_ACPI_STATUS(AE_OK); } diff --git a/drivers/acpi/parser/psparse.c b/drivers/acpi/parser/psparse.c index 3248051d77ee..76d4d640d83c 100644 --- a/drivers/acpi/parser/psparse.c +++ b/drivers/acpi/parser/psparse.c @@ -438,7 +438,6 @@ acpi_ps_next_parse_state(struct acpi_walk_state *walk_state, acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state) { acpi_status status; - acpi_status terminate_status; struct acpi_thread_state *thread; struct acpi_thread_state *prev_walk_list = acpi_gbl_current_walk_list; struct acpi_walk_state *previous_walk_state; @@ -508,6 +507,10 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state) walk_state->method_node, NULL, status); + /* Ensure proper cleanup */ + + walk_state->parse_flags |= ACPI_PARSE_EXECUTE; + /* Check for possible multi-thread reentrancy problem */ if ((status == AE_ALREADY_EXISTS) && @@ -524,14 +527,6 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state) } } - if (walk_state->method_desc) { - /* Decrement the thread count on the method parse tree */ - - if (walk_state->method_desc->method.thread_count) { - walk_state->method_desc->method.thread_count--; - } - } - /* We are done with this walk, move on to the parent if any */ walk_state = acpi_ds_pop_walk_state(thread); @@ -546,13 +541,13 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state) */ if ((walk_state->parse_flags & ACPI_PARSE_MODE_MASK) == ACPI_PARSE_EXECUTE) { - terminate_status = - acpi_ds_terminate_control_method(walk_state); - if (ACPI_FAILURE(terminate_status)) { - ACPI_REPORT_ERROR(("Could not terminate control method properly\n")); + if (walk_state->method_desc) { + /* Decrement the thread count on the method parse tree */ - /* Ignore error and continue */ + walk_state->method_desc->method.thread_count--; } + + acpi_ds_terminate_control_method(walk_state); } /* Delete this walk state and all linked control states */ diff --git a/drivers/acpi/parser/psxface.c b/drivers/acpi/parser/psxface.c index 80c67f2d3dd2..4dcbd443160e 100644 --- a/drivers/acpi/parser/psxface.c +++ b/drivers/acpi/parser/psxface.c @@ -99,16 +99,6 @@ acpi_status acpi_ps_execute_method(struct acpi_parameter_info *info) } /* - * Get a new owner_id for objects created by this method. Namespace - * objects (such as Operation Regions) can be created during the - * first pass parse. - */ - status = acpi_ut_allocate_owner_id(&info->obj_desc->method.owner_id); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* * The caller "owns" the parameters, so give each one an extra * reference */ @@ -139,10 +129,6 @@ acpi_status acpi_ps_execute_method(struct acpi_parameter_info *info) status = acpi_ps_execute_pass(info); cleanup: - if (info->obj_desc->method.owner_id) { - acpi_ut_release_owner_id(&info->obj_desc->method.owner_id); - } - /* Take away the extra reference that we gave the parameters above */ acpi_ps_update_parameter_list(info, REF_DECREMENT); diff --git a/drivers/acpi/resources/rsaddr.c b/drivers/acpi/resources/rsaddr.c index 4cf46e1ee01b..23b54baa0cb2 100644 --- a/drivers/acpi/resources/rsaddr.c +++ b/drivers/acpi/resources/rsaddr.c @@ -47,6 +47,180 @@ #define _COMPONENT ACPI_RESOURCES ACPI_MODULE_NAME("rsaddr") +/* Local prototypes */ +static void +acpi_rs_decode_general_flags(union acpi_resource_data *resource, u8 flags); + +static u8 acpi_rs_encode_general_flags(union acpi_resource_data *resource); + +static void +acpi_rs_decode_specific_flags(union acpi_resource_data *resource, u8 flags); + +static u8 acpi_rs_encode_specific_flags(union acpi_resource_data *resource); + +/******************************************************************************* + * + * FUNCTION: acpi_rs_decode_general_flags + * + * PARAMETERS: Resource - Address resource data struct + * Flags - Actual flag byte + * + * RETURN: Decoded flag bits in resource struct + * + * DESCRIPTION: Decode a general flag byte to an address resource struct + * + ******************************************************************************/ + +static void +acpi_rs_decode_general_flags(union acpi_resource_data *resource, u8 flags) +{ + ACPI_FUNCTION_ENTRY(); + + /* Producer / Consumer - flag bit[0] */ + + resource->address.producer_consumer = (u32) (flags & 0x01); + + /* Decode (_DEC) - flag bit[1] */ + + resource->address.decode = (u32) ((flags >> 1) & 0x01); + + /* Min Address Fixed (_MIF) - flag bit[2] */ + + resource->address.min_address_fixed = (u32) ((flags >> 2) & 0x01); + + /* Max Address Fixed (_MAF) - flag bit[3] */ + + resource->address.max_address_fixed = (u32) ((flags >> 3) & 0x01); +} + +/******************************************************************************* + * + * FUNCTION: acpi_rs_encode_general_flags + * + * PARAMETERS: Resource - Address resource data struct + * + * RETURN: Encoded general flag byte + * + * DESCRIPTION: Construct a general flag byte from an address resource struct + * + ******************************************************************************/ + +static u8 acpi_rs_encode_general_flags(union acpi_resource_data *resource) +{ + u8 flags; + + ACPI_FUNCTION_ENTRY(); + + /* Producer / Consumer - flag bit[0] */ + + flags = (u8) (resource->address.producer_consumer & 0x01); + + /* Decode (_DEC) - flag bit[1] */ + + flags |= (u8) ((resource->address.decode & 0x01) << 1); + + /* Min Address Fixed (_MIF) - flag bit[2] */ + + flags |= (u8) ((resource->address.min_address_fixed & 0x01) << 2); + + /* Max Address Fixed (_MAF) - flag bit[3] */ + + flags |= (u8) ((resource->address.max_address_fixed & 0x01) << 3); + + return (flags); +} + +/******************************************************************************* + * + * FUNCTION: acpi_rs_decode_specific_flags + * + * PARAMETERS: Resource - Address resource data struct + * Flags - Actual flag byte + * + * RETURN: Decoded flag bits in attribute struct + * + * DESCRIPTION: Decode a type-specific flag byte to an attribute struct. + * Type-specific flags are only defined for the Memory and IO + * resource types. + * + ******************************************************************************/ + +static void +acpi_rs_decode_specific_flags(union acpi_resource_data *resource, u8 flags) +{ + ACPI_FUNCTION_ENTRY(); + + if (resource->address.resource_type == ACPI_MEMORY_RANGE) { + /* Write Status (_RW) - flag bit[0] */ + + resource->address.attribute.memory.read_write_attribute = + (u16) (flags & 0x01); + + /* Memory Attributes (_MEM) - flag bits[2:1] */ + + resource->address.attribute.memory.cache_attribute = + (u16) ((flags >> 1) & 0x03); + } else if (resource->address.resource_type == ACPI_IO_RANGE) { + /* Ranges (_RNG) - flag bits[1:0] */ + + resource->address.attribute.io.range_attribute = + (u16) (flags & 0x03); + + /* Translations (_TTP and _TRS) - flag bits[5:4] */ + + resource->address.attribute.io.translation_attribute = + (u16) ((flags >> 4) & 0x03); + } +} + +/******************************************************************************* + * + * FUNCTION: acpi_rs_encode_specific_flags + * + * PARAMETERS: Resource - Address resource data struct + * + * RETURN: Encoded type-specific flag byte + * + * DESCRIPTION: Construct a type-specific flag byte from an attribute struct. + * Type-specific flags are only defined for the Memory and IO + * resource types. + * + ******************************************************************************/ + +static u8 acpi_rs_encode_specific_flags(union acpi_resource_data *resource) +{ + u8 flags = 0; + + ACPI_FUNCTION_ENTRY(); + + if (resource->address.resource_type == ACPI_MEMORY_RANGE) { + /* Write Status (_RW) - flag bit[0] */ + + flags = (u8) + (resource->address.attribute.memory. + read_write_attribute & 0x01); + + /* Memory Attributes (_MEM) - flag bits[2:1] */ + + flags |= (u8) + ((resource->address.attribute.memory. + cache_attribute & 0x03) << 1); + } else if (resource->address.resource_type == ACPI_IO_RANGE) { + /* Ranges (_RNG) - flag bits[1:0] */ + + flags = (u8) + (resource->address.attribute.io.range_attribute & 0x03); + + /* Translations (_TTP and _TRS) - flag bits[5:4] */ + + flags |= (u8) + ((resource->address.attribute.io. + translation_attribute & 0x03) << 4); + } + + return (flags); +} + /******************************************************************************* * * FUNCTION: acpi_rs_address16_resource @@ -67,6 +241,7 @@ ACPI_MODULE_NAME("rsaddr") * number of bytes consumed from the byte stream. * ******************************************************************************/ + acpi_status acpi_rs_address16_resource(u8 * byte_stream_buffer, acpi_size * bytes_consumed, @@ -83,7 +258,7 @@ acpi_rs_address16_resource(u8 * byte_stream_buffer, ACPI_FUNCTION_TRACE("rs_address16_resource"); - /* Point past the Descriptor to get the number of bytes consumed */ + /* Get the Descriptor Length field */ buffer += 1; ACPI_MOVE_16_TO_16(&temp16, buffer); @@ -113,46 +288,12 @@ acpi_rs_address16_resource(u8 * byte_stream_buffer, /* Get the General Flags (Byte4) */ buffer += 1; - temp8 = *buffer; - - /* Producer / Consumer */ - - output_struct->data.address16.producer_consumer = temp8 & 0x01; - - /* Decode */ - - output_struct->data.address16.decode = (temp8 >> 1) & 0x01; - - /* Min Address Fixed */ - - output_struct->data.address16.min_address_fixed = (temp8 >> 2) & 0x01; - - /* Max Address Fixed */ - - output_struct->data.address16.max_address_fixed = (temp8 >> 3) & 0x01; + acpi_rs_decode_general_flags(&output_struct->data, *buffer); /* Get the Type Specific Flags (Byte5) */ buffer += 1; - temp8 = *buffer; - - if (ACPI_MEMORY_RANGE == output_struct->data.address16.resource_type) { - output_struct->data.address16.attribute.memory. - read_write_attribute = (u16) (temp8 & 0x01); - output_struct->data.address16.attribute.memory.cache_attribute = - (u16) ((temp8 >> 1) & 0x03); - } else { - if (ACPI_IO_RANGE == - output_struct->data.address16.resource_type) { - output_struct->data.address16.attribute.io. - range_attribute = (u16) (temp8 & 0x03); - output_struct->data.address16.attribute.io. - translation_attribute = (u16) ((temp8 >> 4) & 0x03); - } else { - /* BUS_NUMBER_RANGE == Address16.Data->resource_type */ - /* Nothing needs to be filled in */ - } - } + acpi_rs_decode_specific_flags(&output_struct->data, *buffer); /* Get Granularity (Bytes 6-7) */ @@ -200,9 +341,8 @@ acpi_rs_address16_resource(u8 * byte_stream_buffer, if (*bytes_consumed > (16 + 1)) { /* Dereference the Index */ - temp8 = *buffer; output_struct->data.address16.resource_source.index = - (u32) temp8; + (u32) * buffer; /* Point to the String */ @@ -216,22 +356,20 @@ acpi_rs_address16_resource(u8 * byte_stream_buffer, temp_ptr = (u8 *) output_struct->data.address16.resource_source.string_ptr; - /* Copy the string into the buffer */ + /* Copy the resource_source string into the buffer */ index = 0; - - while (0x00 != *buffer) { + while (*buffer) { *temp_ptr = *buffer; - temp_ptr += 1; - buffer += 1; - index += 1; + temp_ptr++; + buffer++; + index++; } - /* Add the terminating null */ - - *temp_ptr = 0x00; + /* Add the terminating null and set the string length */ + *temp_ptr = 0; output_struct->data.address16.resource_source.string_length = index + 1; @@ -243,7 +381,7 @@ acpi_rs_address16_resource(u8 * byte_stream_buffer, temp8 = (u8) (index + 1); struct_size += ACPI_ROUND_UP_to_32_bITS(temp8); } else { - output_struct->data.address16.resource_source.index = 0x00; + output_struct->data.address16.resource_source.index = 0; output_struct->data.address16.resource_source.string_length = 0; output_struct->data.address16.resource_source.string_ptr = NULL; } @@ -280,15 +418,13 @@ acpi_rs_address16_stream(struct acpi_resource *linked_list, { u8 *buffer = *output_buffer; u8 *length_field; - u8 temp8; - char *temp_pointer = NULL; acpi_size actual_bytes; ACPI_FUNCTION_TRACE("rs_address16_stream"); - /* The descriptor field is static */ + /* Set the Descriptor Type field */ - *buffer = 0x88; + *buffer = ACPI_RDESC_TYPE_WORD_ADDRESS_SPACE; buffer += 1; /* Save a pointer to the Length field - to be filled in later */ @@ -298,43 +434,17 @@ acpi_rs_address16_stream(struct acpi_resource *linked_list, /* Set the Resource Type (Memory, Io, bus_number) */ - temp8 = (u8) (linked_list->data.address16.resource_type & 0x03); - *buffer = temp8; + *buffer = (u8) (linked_list->data.address16.resource_type & 0x03); buffer += 1; /* Set the general flags */ - temp8 = (u8) (linked_list->data.address16.producer_consumer & 0x01); - - temp8 |= (linked_list->data.address16.decode & 0x01) << 1; - temp8 |= (linked_list->data.address16.min_address_fixed & 0x01) << 2; - temp8 |= (linked_list->data.address16.max_address_fixed & 0x01) << 3; - - *buffer = temp8; + *buffer = acpi_rs_encode_general_flags(&linked_list->data); buffer += 1; /* Set the type specific flags */ - temp8 = 0; - - if (ACPI_MEMORY_RANGE == linked_list->data.address16.resource_type) { - temp8 = (u8) - (linked_list->data.address16.attribute.memory. - read_write_attribute & 0x01); - - temp8 |= - (linked_list->data.address16.attribute.memory. - cache_attribute & 0x03) << 1; - } else if (ACPI_IO_RANGE == linked_list->data.address16.resource_type) { - temp8 = (u8) - (linked_list->data.address16.attribute.io.range_attribute & - 0x03); - temp8 |= - (linked_list->data.address16.attribute.io. - translation_attribute & 0x03) << 4; - } - - *buffer = temp8; + *buffer = acpi_rs_encode_specific_flags(&linked_list->data); buffer += 1; /* Set the address space granularity */ @@ -368,22 +478,19 @@ acpi_rs_address16_stream(struct acpi_resource *linked_list, /* Resource Source Index and Resource Source are optional */ - if (0 != linked_list->data.address16.resource_source.string_length) { - temp8 = (u8) linked_list->data.address16.resource_source.index; - - *buffer = temp8; + if (linked_list->data.address16.resource_source.string_length) { + *buffer = + (u8) linked_list->data.address16.resource_source.index; buffer += 1; - temp_pointer = (char *)buffer; - - /* Copy the string */ + /* Copy the resource_source string */ - ACPI_STRCPY(temp_pointer, + ACPI_STRCPY((char *)buffer, linked_list->data.address16.resource_source. string_ptr); /* - * Buffer needs to be set to the length of the sting + one for the + * Buffer needs to be set to the length of the string + one for the * terminating null */ buffer += @@ -432,20 +539,18 @@ acpi_rs_address32_resource(u8 * byte_stream_buffer, acpi_size * bytes_consumed, u8 ** output_buffer, acpi_size * structure_size) { - u8 *buffer; - struct acpi_resource *output_struct = (void *)*output_buffer; u16 temp16; u8 temp8; u8 *temp_ptr; - acpi_size struct_size; u32 index; + u8 *buffer = byte_stream_buffer; + struct acpi_resource *output_struct = (void *)*output_buffer; + acpi_size struct_size = + ACPI_SIZEOF_RESOURCE(struct acpi_resource_address32); ACPI_FUNCTION_TRACE("rs_address32_resource"); - buffer = byte_stream_buffer; - struct_size = ACPI_SIZEOF_RESOURCE(struct acpi_resource_address32); - - /* Point past the Descriptor to get the number of bytes consumed */ + /* Get the Descriptor Length field */ buffer += 1; ACPI_MOVE_16_TO_16(&temp16, buffer); @@ -475,47 +580,12 @@ acpi_rs_address32_resource(u8 * byte_stream_buffer, /* Get the General Flags (Byte4) */ buffer += 1; - temp8 = *buffer; - - /* Producer / Consumer */ - - output_struct->data.address32.producer_consumer = temp8 & 0x01; - - /* Decode */ - - output_struct->data.address32.decode = (temp8 >> 1) & 0x01; - - /* Min Address Fixed */ - - output_struct->data.address32.min_address_fixed = (temp8 >> 2) & 0x01; - - /* Max Address Fixed */ - - output_struct->data.address32.max_address_fixed = (temp8 >> 3) & 0x01; + acpi_rs_decode_general_flags(&output_struct->data, *buffer); /* Get the Type Specific Flags (Byte5) */ buffer += 1; - temp8 = *buffer; - - if (ACPI_MEMORY_RANGE == output_struct->data.address32.resource_type) { - output_struct->data.address32.attribute.memory. - read_write_attribute = (u16) (temp8 & 0x01); - - output_struct->data.address32.attribute.memory.cache_attribute = - (u16) ((temp8 >> 1) & 0x03); - } else { - if (ACPI_IO_RANGE == - output_struct->data.address32.resource_type) { - output_struct->data.address32.attribute.io. - range_attribute = (u16) (temp8 & 0x03); - output_struct->data.address32.attribute.io. - translation_attribute = (u16) ((temp8 >> 4) & 0x03); - } else { - /* BUS_NUMBER_RANGE == output_struct->Data.Address32.resource_type */ - /* Nothing needs to be filled in */ - } - } + acpi_rs_decode_specific_flags(&output_struct->data, *buffer); /* Get Granularity (Bytes 6-9) */ @@ -561,9 +631,8 @@ acpi_rs_address32_resource(u8 * byte_stream_buffer, if (*bytes_consumed > (26 + 1)) { /* Dereference the Index */ - temp8 = *buffer; output_struct->data.address32.resource_source.index = - (u32) temp8; + (u32) * buffer; /* Point to the String */ @@ -577,20 +646,20 @@ acpi_rs_address32_resource(u8 * byte_stream_buffer, temp_ptr = (u8 *) output_struct->data.address32.resource_source.string_ptr; - /* Copy the string into the buffer */ + /* Copy the resource_source string into the buffer */ index = 0; - while (0x00 != *buffer) { + while (*buffer) { *temp_ptr = *buffer; - temp_ptr += 1; - buffer += 1; - index += 1; + temp_ptr++; + buffer++; + index++; } - /* Add the terminating null */ + /* Add the terminating null and set the string length */ - *temp_ptr = 0x00; + *temp_ptr = 0; output_struct->data.address32.resource_source.string_length = index + 1; @@ -602,7 +671,7 @@ acpi_rs_address32_resource(u8 * byte_stream_buffer, temp8 = (u8) (index + 1); struct_size += ACPI_ROUND_UP_to_32_bITS(temp8); } else { - output_struct->data.address32.resource_source.index = 0x00; + output_struct->data.address32.resource_source.index = 0; output_struct->data.address32.resource_source.string_length = 0; output_struct->data.address32.resource_source.string_ptr = NULL; } @@ -639,62 +708,34 @@ acpi_rs_address32_stream(struct acpi_resource *linked_list, { u8 *buffer; u16 *length_field; - u8 temp8; - char *temp_pointer; ACPI_FUNCTION_TRACE("rs_address32_stream"); buffer = *output_buffer; - /* The descriptor field is static */ + /* Set the Descriptor Type field */ - *buffer = 0x87; + *buffer = ACPI_RDESC_TYPE_DWORD_ADDRESS_SPACE; buffer += 1; - /* Set a pointer to the Length field - to be filled in later */ + /* Save a pointer to the Length field - to be filled in later */ length_field = ACPI_CAST_PTR(u16, buffer); buffer += 2; /* Set the Resource Type (Memory, Io, bus_number) */ - temp8 = (u8) (linked_list->data.address32.resource_type & 0x03); - - *buffer = temp8; + *buffer = (u8) (linked_list->data.address32.resource_type & 0x03); buffer += 1; /* Set the general flags */ - temp8 = (u8) (linked_list->data.address32.producer_consumer & 0x01); - temp8 |= (linked_list->data.address32.decode & 0x01) << 1; - temp8 |= (linked_list->data.address32.min_address_fixed & 0x01) << 2; - temp8 |= (linked_list->data.address32.max_address_fixed & 0x01) << 3; - - *buffer = temp8; + *buffer = acpi_rs_encode_general_flags(&linked_list->data); buffer += 1; /* Set the type specific flags */ - temp8 = 0; - - if (ACPI_MEMORY_RANGE == linked_list->data.address32.resource_type) { - temp8 = (u8) - (linked_list->data.address32.attribute.memory. - read_write_attribute & 0x01); - - temp8 |= - (linked_list->data.address32.attribute.memory. - cache_attribute & 0x03) << 1; - } else if (ACPI_IO_RANGE == linked_list->data.address32.resource_type) { - temp8 = (u8) - (linked_list->data.address32.attribute.io.range_attribute & - 0x03); - temp8 |= - (linked_list->data.address32.attribute.io. - translation_attribute & 0x03) << 4; - } - - *buffer = temp8; + *buffer = acpi_rs_encode_specific_flags(&linked_list->data); buffer += 1; /* Set the address space granularity */ @@ -728,22 +769,19 @@ acpi_rs_address32_stream(struct acpi_resource *linked_list, /* Resource Source Index and Resource Source are optional */ - if (0 != linked_list->data.address32.resource_source.string_length) { - temp8 = (u8) linked_list->data.address32.resource_source.index; - - *buffer = temp8; + if (linked_list->data.address32.resource_source.string_length) { + *buffer = + (u8) linked_list->data.address32.resource_source.index; buffer += 1; - temp_pointer = (char *)buffer; - - /* Copy the string */ + /* Copy the resource_source string */ - ACPI_STRCPY(temp_pointer, + ACPI_STRCPY((char *)buffer, linked_list->data.address32.resource_source. string_ptr); /* - * Buffer needs to be set to the length of the sting + one for the + * Buffer needs to be set to the length of the string + one for the * terminating null */ buffer += @@ -758,7 +796,7 @@ acpi_rs_address32_stream(struct acpi_resource *linked_list, /* * Set the length field to the number of bytes consumed - * minus the header size (3 bytes) + * minus the header size (3 bytes) */ *length_field = (u16) (*bytes_consumed - 3); return_ACPI_STATUS(AE_OK); @@ -790,22 +828,23 @@ acpi_rs_address64_resource(u8 * byte_stream_buffer, acpi_size * bytes_consumed, u8 ** output_buffer, acpi_size * structure_size) { - u8 *buffer; - struct acpi_resource *output_struct = (void *)*output_buffer; u16 temp16; u8 temp8; u8 resource_type; u8 *temp_ptr; - acpi_size struct_size; u32 index; + u8 *buffer = byte_stream_buffer; + struct acpi_resource *output_struct = (void *)*output_buffer; + acpi_size struct_size = + ACPI_SIZEOF_RESOURCE(struct acpi_resource_address64); ACPI_FUNCTION_TRACE("rs_address64_resource"); - buffer = byte_stream_buffer; - struct_size = ACPI_SIZEOF_RESOURCE(struct acpi_resource_address64); + /* Get the Descriptor Type */ + resource_type = *buffer; - /* Point past the Descriptor to get the number of bytes consumed */ + /* Get the Descriptor Length field */ buffer += 1; ACPI_MOVE_16_TO_16(&temp16, buffer); @@ -835,47 +874,12 @@ acpi_rs_address64_resource(u8 * byte_stream_buffer, /* Get the General Flags (Byte4) */ buffer += 1; - temp8 = *buffer; - - /* Producer / Consumer */ - - output_struct->data.address64.producer_consumer = temp8 & 0x01; - - /* Decode */ - - output_struct->data.address64.decode = (temp8 >> 1) & 0x01; - - /* Min Address Fixed */ - - output_struct->data.address64.min_address_fixed = (temp8 >> 2) & 0x01; - - /* Max Address Fixed */ - - output_struct->data.address64.max_address_fixed = (temp8 >> 3) & 0x01; + acpi_rs_decode_general_flags(&output_struct->data, *buffer); /* Get the Type Specific Flags (Byte5) */ buffer += 1; - temp8 = *buffer; - - if (ACPI_MEMORY_RANGE == output_struct->data.address64.resource_type) { - output_struct->data.address64.attribute.memory. - read_write_attribute = (u16) (temp8 & 0x01); - - output_struct->data.address64.attribute.memory.cache_attribute = - (u16) ((temp8 >> 1) & 0x03); - } else { - if (ACPI_IO_RANGE == - output_struct->data.address64.resource_type) { - output_struct->data.address64.attribute.io. - range_attribute = (u16) (temp8 & 0x03); - output_struct->data.address64.attribute.io. - translation_attribute = (u16) ((temp8 >> 4) & 0x03); - } else { - /* BUS_NUMBER_RANGE == output_struct->Data.Address64.resource_type */ - /* Nothing needs to be filled in */ - } - } + acpi_rs_decode_specific_flags(&output_struct->data, *buffer); if (resource_type == ACPI_RDESC_TYPE_EXTENDED_ADDRESS_SPACE) { /* Move past revision_id and Reserved byte */ @@ -912,7 +916,7 @@ acpi_rs_address64_resource(u8 * byte_stream_buffer, ACPI_MOVE_64_TO_64(&output_struct->data.address64.address_length, buffer); - output_struct->data.address64.resource_source.index = 0x00; + output_struct->data.address64.resource_source.index = 0; output_struct->data.address64.resource_source.string_length = 0; output_struct->data.address64.resource_source.string_ptr = NULL; @@ -942,9 +946,8 @@ acpi_rs_address64_resource(u8 * byte_stream_buffer, if (*bytes_consumed > (46 + 1)) { /* Dereference the Index */ - temp8 = *buffer; output_struct->data.address64.resource_source.index = - (u32) temp8; + (u32) * buffer; /* Point to the String */ @@ -960,21 +963,21 @@ acpi_rs_address64_resource(u8 * byte_stream_buffer, output_struct->data.address64.resource_source. string_ptr; - /* Copy the string into the buffer */ + /* Copy the resource_source string into the buffer */ index = 0; - while (0x00 != *buffer) { + while (*buffer) { *temp_ptr = *buffer; - temp_ptr += 1; - buffer += 1; - index += 1; + temp_ptr++; + buffer++; + index++; } /* - * Add the terminating null + * Add the terminating null and set the string length */ - *temp_ptr = 0x00; + *temp_ptr = 0; output_struct->data.address64.resource_source. string_length = index + 1; @@ -1020,62 +1023,34 @@ acpi_rs_address64_stream(struct acpi_resource *linked_list, { u8 *buffer; u16 *length_field; - u8 temp8; - char *temp_pointer; ACPI_FUNCTION_TRACE("rs_address64_stream"); buffer = *output_buffer; - /* The descriptor field is static */ + /* Set the Descriptor Type field */ - *buffer = 0x8A; + *buffer = ACPI_RDESC_TYPE_QWORD_ADDRESS_SPACE; buffer += 1; - /* Set a pointer to the Length field - to be filled in later */ + /* Save a pointer to the Length field - to be filled in later */ length_field = ACPI_CAST_PTR(u16, buffer); buffer += 2; /* Set the Resource Type (Memory, Io, bus_number) */ - temp8 = (u8) (linked_list->data.address64.resource_type & 0x03); - - *buffer = temp8; + *buffer = (u8) (linked_list->data.address64.resource_type & 0x03); buffer += 1; /* Set the general flags */ - temp8 = (u8) (linked_list->data.address64.producer_consumer & 0x01); - temp8 |= (linked_list->data.address64.decode & 0x01) << 1; - temp8 |= (linked_list->data.address64.min_address_fixed & 0x01) << 2; - temp8 |= (linked_list->data.address64.max_address_fixed & 0x01) << 3; - - *buffer = temp8; + *buffer = acpi_rs_encode_general_flags(&linked_list->data); buffer += 1; /* Set the type specific flags */ - temp8 = 0; - - if (ACPI_MEMORY_RANGE == linked_list->data.address64.resource_type) { - temp8 = (u8) - (linked_list->data.address64.attribute.memory. - read_write_attribute & 0x01); - - temp8 |= - (linked_list->data.address64.attribute.memory. - cache_attribute & 0x03) << 1; - } else if (ACPI_IO_RANGE == linked_list->data.address64.resource_type) { - temp8 = (u8) - (linked_list->data.address64.attribute.io.range_attribute & - 0x03); - temp8 |= - (linked_list->data.address64.attribute.io.range_attribute & - 0x03) << 4; - } - - *buffer = temp8; + *buffer = acpi_rs_encode_specific_flags(&linked_list->data); buffer += 1; /* Set the address space granularity */ @@ -1109,22 +1084,19 @@ acpi_rs_address64_stream(struct acpi_resource *linked_list, /* Resource Source Index and Resource Source are optional */ - if (0 != linked_list->data.address64.resource_source.string_length) { - temp8 = (u8) linked_list->data.address64.resource_source.index; - - *buffer = temp8; + if (linked_list->data.address64.resource_source.string_length) { + *buffer = + (u8) linked_list->data.address64.resource_source.index; buffer += 1; - temp_pointer = (char *)buffer; - - /* Copy the string */ + /* Copy the resource_source string */ - ACPI_STRCPY(temp_pointer, + ACPI_STRCPY((char *)buffer, linked_list->data.address64.resource_source. string_ptr); /* - * Buffer needs to be set to the length of the sting + one for the + * Buffer needs to be set to the length of the string + one for the * terminating null */ buffer += diff --git a/drivers/acpi/resources/rsirq.c b/drivers/acpi/resources/rsirq.c index 7179b6243f5b..56043fee96cb 100644 --- a/drivers/acpi/resources/rsirq.c +++ b/drivers/acpi/resources/rsirq.c @@ -290,7 +290,7 @@ acpi_rs_extended_irq_resource(u8 * byte_stream_buffer, ACPI_FUNCTION_TRACE("rs_extended_irq_resource"); - /* Point past the Descriptor to get the number of bytes consumed */ + /* Get the Descriptor Length field */ buffer += 1; ACPI_MOVE_16_TO_16(&temp16, buffer); @@ -398,7 +398,7 @@ acpi_rs_extended_irq_resource(u8 * byte_stream_buffer, /* Copy the string into the buffer */ index = 0; - while (0x00 != *buffer) { + while (*buffer) { *temp_ptr = *buffer; temp_ptr += 1; @@ -408,7 +408,7 @@ acpi_rs_extended_irq_resource(u8 * byte_stream_buffer, /* Add the terminating null */ - *temp_ptr = 0x00; + *temp_ptr = 0; output_struct->data.extended_irq.resource_source.string_length = index + 1; @@ -420,7 +420,7 @@ acpi_rs_extended_irq_resource(u8 * byte_stream_buffer, temp8 = (u8) (index + 1); struct_size += ACPI_ROUND_UP_to_32_bITS(temp8); } else { - output_struct->data.extended_irq.resource_source.index = 0x00; + output_struct->data.extended_irq.resource_source.index = 0; output_struct->data.extended_irq.resource_source.string_length = 0; output_struct->data.extended_irq.resource_source.string_ptr = @@ -461,16 +461,15 @@ acpi_rs_extended_irq_stream(struct acpi_resource *linked_list, u16 *length_field; u8 temp8 = 0; u8 index; - char *temp_pointer = NULL; ACPI_FUNCTION_TRACE("rs_extended_irq_stream"); - /* The descriptor field is static */ + /* Set the Descriptor Type field */ - *buffer = 0x89; + *buffer = ACPI_RDESC_TYPE_EXTENDED_XRUPT; buffer += 1; - /* Set a pointer to the Length field - to be filled in later */ + /* Save a pointer to the Length field - to be filled in later */ length_field = ACPI_CAST_PTR(u16, buffer); buffer += 2; @@ -524,16 +523,14 @@ acpi_rs_extended_irq_stream(struct acpi_resource *linked_list, (u8) linked_list->data.extended_irq.resource_source.index; buffer += 1; - temp_pointer = (char *)buffer; - /* Copy the string */ - ACPI_STRCPY(temp_pointer, + ACPI_STRCPY((char *)buffer, linked_list->data.extended_irq.resource_source. string_ptr); /* - * Buffer needs to be set to the length of the sting + one for the + * Buffer needs to be set to the length of the string + one for the * terminating null */ buffer += diff --git a/drivers/acpi/utilities/utmisc.c b/drivers/acpi/utilities/utmisc.c index f0275025b718..0c5abc536c7a 100644 --- a/drivers/acpi/utilities/utmisc.c +++ b/drivers/acpi/utilities/utmisc.c @@ -67,6 +67,14 @@ acpi_status acpi_ut_allocate_owner_id(acpi_owner_id * owner_id) ACPI_FUNCTION_TRACE("ut_allocate_owner_id"); + /* Guard against multiple allocations of ID to the same location */ + + if (*owner_id) { + ACPI_REPORT_ERROR(("Owner ID [%2.2X] already exists\n", + *owner_id)); + return_ACPI_STATUS(AE_ALREADY_EXISTS); + } + /* Mutex for the global ID mask */ status = acpi_ut_acquire_mutex(ACPI_MTX_CACHES); @@ -80,7 +88,8 @@ acpi_status acpi_ut_allocate_owner_id(acpi_owner_id * owner_id) if (!(acpi_gbl_owner_id_mask & (1 << i))) { ACPI_DEBUG_PRINT((ACPI_DB_VALUES, "Current owner_id mask: %8.8X New ID: %2.2X\n", - acpi_gbl_owner_id_mask, (i + 1))); + acpi_gbl_owner_id_mask, + (unsigned int)(i + 1))); acpi_gbl_owner_id_mask |= (1 << i); *owner_id = (acpi_owner_id) (i + 1); @@ -143,7 +152,9 @@ void acpi_ut_release_owner_id(acpi_owner_id * owner_id_ptr) return_VOID; } - owner_id--; /* Normalize to zero */ + /* Normalize the ID to zero */ + + owner_id--; /* Free the owner ID only if it is valid */ |
