[ACPI] ACPICA 20041203 from Bob Moore and Alexey Starikovskiy

The low-level field insertion/extraction code (exfldio)
has been completely rewritten to eliminate unnecessary
complexity, bugs, and boundary conditions.

Fixed a problem in the ToInteger, ToBuffer, ToHexString,
and ToDecimalString operators where the input operand could
be inadvertently deleted if no conversion was necessary
(e.g., if the input to ToInteger was an Integer object.)

Fixed a problem with the ToDecimalString and ToHexString
where an incorrect exception code was returned if the
resulting string would be > 200 chars.  AE_STRING_LIMIT is
now returned.

Fixed a problem with the Concatenate operator where AE_OK
was always returned, even if the operation failed.

Fixed a problem in oswinxf (used by AcpiExec and iASL)
to allow > 128 semaphores to be allocated.
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/acpi/dispatcher/dsopcode.c

@@ -762,9 +762,8 @@ acpi_ds_eval_region_operands (
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Get the operands and complete the following data objec types:
- *              Buffer
- *              Package
+ * DESCRIPTION: Get the operands and complete the following data object types:
+ *              Buffer, Package.
  *
  ****************************************************************************/
 

drivers/acpi/dispatcher/dswexec.c

@@ -399,16 +399,24 @@ acpi_ds_exec_end_op (
 			goto cleanup;
 		}
 
-		/* Resolve all operands */
+		/*
+		 * All opcodes require operand resolution, with the only exceptions
+		 * being the object_type and size_of operators.
+		 */
+		if (!(walk_state->op_info->flags & AML_NO_OPERAND_RESOLVE)) {
+			/* Resolve all operands */
+
+			status = acpi_ex_resolve_operands (walk_state->opcode,
+					  &(walk_state->operands [walk_state->num_operands -1]),
+					  walk_state);
+			if (ACPI_SUCCESS (status)) {
+				ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS, ACPI_IMODE_EXECUTE,
+						  acpi_ps_get_opcode_name (walk_state->opcode),
+						  walk_state->num_operands, "after ex_resolve_operands");
+			}
+		}
 
-		status = acpi_ex_resolve_operands (walk_state->opcode,
-				  &(walk_state->operands [walk_state->num_operands -1]),
-				  walk_state);
 		if (ACPI_SUCCESS (status)) {
-			ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS, ACPI_IMODE_EXECUTE,
-					  acpi_ps_get_opcode_name (walk_state->opcode),
-					  walk_state->num_operands, "after ex_resolve_operands");
-
 			/*
 			 * Dispatch the request to the appropriate interpreter handler
 			 * routine.  There is one routine per opcode "type" based upon the

drivers/acpi/events/evgpe.c

@@ -605,8 +605,8 @@ acpi_ev_gpe_dispatch (
 	if ((gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK) == ACPI_GPE_EDGE_TRIGGERED) {
 		status = acpi_hw_clear_gpe (gpe_event_info);
 		if (ACPI_FAILURE (status)) {
-			ACPI_REPORT_ERROR (("acpi_ev_gpe_dispatch: Unable to clear GPE[%2X]\n",
-				gpe_number));
+			ACPI_REPORT_ERROR (("acpi_ev_gpe_dispatch: %s, Unable to clear GPE[%2X]\n",
+				acpi_format_exception (status), gpe_number));
 			return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
 		}
 	}
@@ -643,8 +643,8 @@ acpi_ev_gpe_dispatch (
 			status = acpi_hw_clear_gpe (gpe_event_info);
 			if (ACPI_FAILURE (status)) {
 				ACPI_REPORT_ERROR ((
-					"acpi_ev_gpe_dispatch: Unable to clear GPE[%2X]\n",
-					gpe_number));
+					"acpi_ev_gpe_dispatch: %s, Unable to clear GPE[%2X]\n",
+					acpi_format_exception (status), gpe_number));
 				return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
 			}
 		}
@@ -659,8 +659,8 @@ acpi_ev_gpe_dispatch (
 		status = acpi_ev_disable_gpe (gpe_event_info);
 		if (ACPI_FAILURE (status)) {
 			ACPI_REPORT_ERROR ((
-				"acpi_ev_gpe_dispatch: Unable to disable GPE[%2X]\n",
-				gpe_number));
+				"acpi_ev_gpe_dispatch: %s, Unable to disable GPE[%2X]\n",
+				acpi_format_exception (status), gpe_number));
 			return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
 		}
 
@@ -668,12 +668,12 @@ acpi_ev_gpe_dispatch (
 		 * Execute the method associated with the GPE
 		 * NOTE: Level-triggered GPEs are cleared after the method completes.
 		 */
-		if (ACPI_FAILURE (acpi_os_queue_for_execution (OSD_PRIORITY_GPE,
-				 acpi_ev_asynch_execute_gpe_method,
-				 gpe_event_info))) {
+		status = acpi_os_queue_for_execution (OSD_PRIORITY_GPE,
+				 acpi_ev_asynch_execute_gpe_method, gpe_event_info);
+		if (ACPI_FAILURE (status)) {
 			ACPI_REPORT_ERROR ((
-				"acpi_ev_gpe_dispatch: Unable to queue handler for GPE[%2X], event is disabled\n",
-				gpe_number));
+				"acpi_ev_gpe_dispatch: %s, Unable to queue handler for GPE[%2X] - event disabled\n",
+				acpi_format_exception (status), gpe_number));
 		}
 		break;
 
@@ -692,8 +692,8 @@ acpi_ev_gpe_dispatch (
 		status = acpi_ev_disable_gpe (gpe_event_info);
 		if (ACPI_FAILURE (status)) {
 			ACPI_REPORT_ERROR ((
-				"acpi_ev_gpe_dispatch: Unable to disable GPE[%2X]\n",
-				gpe_number));
+				"acpi_ev_gpe_dispatch: %s, Unable to disable GPE[%2X]\n",
+				acpi_format_exception (status), gpe_number));
 			return_VALUE (ACPI_INTERRUPT_NOT_HANDLED);
 		}
 		break;

drivers/acpi/executer/exdump.c

@@ -714,9 +714,6 @@ acpi_ex_dump_object_descriptor (
 		acpi_ex_out_integer ("bit_length",  obj_desc->common_field.bit_length);
 		acpi_ex_out_integer ("fld_bit_offset", obj_desc->common_field.start_field_bit_offset);
 		acpi_ex_out_integer ("base_byte_offset", obj_desc->common_field.base_byte_offset);
-		acpi_ex_out_integer ("datum_valid_bits", obj_desc->common_field.datum_valid_bits);
-		acpi_ex_out_integer ("end_fld_valid_bits",obj_desc->common_field.end_field_valid_bits);
-		acpi_ex_out_integer ("end_buf_valid_bits",obj_desc->common_field.end_buffer_valid_bits);
 		acpi_ex_out_pointer ("parent_node", obj_desc->common_field.node);
 
 		switch (ACPI_GET_OBJECT_TYPE (obj_desc)) {

drivers/acpi/executer/exmisc.c

@@ -389,7 +389,7 @@ acpi_ex_do_concatenate (
 	if (local_operand1 != operand1) {
 		acpi_ut_remove_reference (local_operand1);
 	}
-	return_ACPI_STATUS (AE_OK);
+	return_ACPI_STATUS (status);
 }
 
 

drivers/acpi/executer/exoparg1.c

@@ -507,6 +507,10 @@ acpi_ex_opcode_1A_1T_1R (
 
 		status = acpi_ex_convert_to_string (operand[0], &return_desc,
 				 ACPI_EXPLICIT_CONVERT_DECIMAL);
+		if (return_desc == operand[0]) {
+			/* No conversion performed, add ref to handle return value */
+			acpi_ut_add_reference (return_desc);
+		}
 		break;
 
 
@@ -514,12 +518,20 @@ acpi_ex_opcode_1A_1T_1R (
 
 		status = acpi_ex_convert_to_string (operand[0], &return_desc,
 				 ACPI_EXPLICIT_CONVERT_HEX);
+		if (return_desc == operand[0]) {
+			/* No conversion performed, add ref to handle return value */
+			acpi_ut_add_reference (return_desc);
+		}
 		break;
 
 
 	case AML_TO_BUFFER_OP:          /* to_buffer (Data, Result) */
 
 		status = acpi_ex_convert_to_buffer (operand[0], &return_desc);
+		if (return_desc == operand[0]) {
+			/* No conversion performed, add ref to handle return value */
+			acpi_ut_add_reference (return_desc);
+		}
 		break;
 
 
@@ -527,6 +539,10 @@ acpi_ex_opcode_1A_1T_1R (
 
 		status = acpi_ex_convert_to_integer (operand[0], &return_desc,
 				 ACPI_ANY_BASE);
+		if (return_desc == operand[0]) {
+			/* No conversion performed, add ref to handle return value */
+			acpi_ut_add_reference (return_desc);
+		}
 		break;
 
 
@@ -551,10 +567,12 @@ acpi_ex_opcode_1A_1T_1R (
 		goto cleanup;
 	}
 
-	/*
-	 * Store the return value computed above into the target object
-	 */
-	status = acpi_ex_store (return_desc, operand[1], walk_state);
+	if (ACPI_SUCCESS (status)) {
+		/*
+		 * Store the return value computed above into the target object
+		 */
+		status = acpi_ex_store (return_desc, operand[1], walk_state);
+	}
 
 
 cleanup:

drivers/acpi/executer/exprep.c

@@ -339,6 +339,8 @@ acpi_ex_prep_common_field_object (
 	obj_desc->common_field.access_byte_width = (u8)
 			ACPI_DIV_8 (access_bit_width); /* 1, 2, 4,  8 */
 
+	obj_desc->common_field.access_bit_width = (u8) access_bit_width;
+
 	/*
 	 * base_byte_offset is the address of the start of the field within the
 	 * region.  It is the byte address of the first *datum* (field-width data
@@ -361,28 +363,6 @@ acpi_ex_prep_common_field_object (
 	obj_desc->common_field.start_field_bit_offset = (u8)
 		(field_bit_position - ACPI_MUL_8 (obj_desc->common_field.base_byte_offset));
 
-	/*
-	 * Valid bits -- the number of bits that compose a partial datum,
-	 * 1) At the end of the field within the region (arbitrary starting bit
-	 *    offset)
-	 * 2) At the end of a buffer used to contain the field (starting offset
-	 *    always zero)
-	 */
-	obj_desc->common_field.end_field_valid_bits = (u8)
-		((obj_desc->common_field.start_field_bit_offset + field_bit_length) %
-				  access_bit_width);
-	/* start_buffer_bit_offset always = 0 */
-
-	obj_desc->common_field.end_buffer_valid_bits = (u8)
-		(field_bit_length % access_bit_width);
-
-	/*
-	 * datum_valid_bits is the number of valid field bits in the first
-	 * field datum.
-	 */
-	obj_desc->common_field.datum_valid_bits  = (u8)
-		(access_bit_width - obj_desc->common_field.start_field_bit_offset);
-
 	/*
 	 * Does the entire field fit within a single field access element? (datum)
 	 * (i.e., without crossing a datum boundary)

drivers/acpi/parser/psopcode.c

@@ -318,7 +318,7 @@
 #define ARGI_SHIFT_LEFT_OP              ARGI_LIST3 (ARGI_INTEGER,    ARGI_INTEGER,       ARGI_TARGETREF)
 #define ARGI_SHIFT_RIGHT_OP             ARGI_LIST3 (ARGI_INTEGER,    ARGI_INTEGER,       ARGI_TARGETREF)
 #define ARGI_SIGNAL_OP                  ARGI_LIST1 (ARGI_EVENT)
-#define ARGI_SIZE_OF_OP                 ARGI_LIST1 (ARGI_REFERENCE) /* Force delay of operand resolution */
+#define ARGI_SIZE_OF_OP                 ARGI_LIST1 (ARGI_DATAOBJECT)
 #define ARGI_SLEEP_OP                   ARGI_LIST1 (ARGI_INTEGER)
 #define ARGI_STALL_OP                   ARGI_LIST1 (ARGI_INTEGER)
 #define ARGI_STATICSTRING_OP            ARGI_INVALID_OPCODE
@@ -333,7 +333,7 @@
 #define ARGI_TO_HEX_STR_OP              ARGI_LIST2 (ARGI_COMPUTEDATA,ARGI_FIXED_TARGET)
 #define ARGI_TO_INTEGER_OP              ARGI_LIST2 (ARGI_COMPUTEDATA,ARGI_FIXED_TARGET)
 #define ARGI_TO_STRING_OP               ARGI_LIST3 (ARGI_BUFFER,     ARGI_INTEGER,       ARGI_FIXED_TARGET)
-#define ARGI_TYPE_OP                    ARGI_LIST1 (ARGI_REFERENCE) /* Force delay of operand resolution */
+#define ARGI_TYPE_OP                    ARGI_LIST1 (ARGI_ANYTYPE)
 #define ARGI_UNLOAD_OP                  ARGI_LIST1 (ARGI_DDBHANDLE)
 #define ARGI_VAR_PACKAGE_OP             ARGI_LIST1 (ARGI_INTEGER)
 #define ARGI_WAIT_OP                    ARGI_LIST2 (ARGI_EVENT,      ARGI_INTEGER)
@@ -521,14 +521,14 @@ const struct acpi_opcode_info     acpi_gbl_aml_op_info[AML_NUM_OPCODES] =
 /* 2D */ ACPI_OP ("FindSetRightBit",    ARGP_FIND_SET_RIGHT_BIT_OP,ARGI_FIND_SET_RIGHT_BIT_OP, ACPI_TYPE_ANY,               AML_CLASS_EXECUTE,         AML_TYPE_EXEC_1A_1T_1R,   AML_FLAGS_EXEC_1A_1T_1R | AML_CONSTANT),
 /* 2E */ ACPI_OP ("DerefOf",            ARGP_DEREF_OF_OP,          ARGI_DEREF_OF_OP,           ACPI_TYPE_ANY,               AML_CLASS_EXECUTE,         AML_TYPE_EXEC_1A_0T_1R,   AML_FLAGS_EXEC_1A_0T_1R),
 /* 2F */ ACPI_OP ("Notify",             ARGP_NOTIFY_OP,            ARGI_NOTIFY_OP,             ACPI_TYPE_ANY,               AML_CLASS_EXECUTE,         AML_TYPE_EXEC_2A_0T_0R,   AML_FLAGS_EXEC_2A_0T_0R),
-/* 30 */ ACPI_OP ("SizeOf",             ARGP_SIZE_OF_OP,           ARGI_SIZE_OF_OP,            ACPI_TYPE_ANY,               AML_CLASS_EXECUTE,         AML_TYPE_EXEC_1A_0T_1R,   AML_FLAGS_EXEC_1A_0T_1R),
+/* 30 */ ACPI_OP ("SizeOf",             ARGP_SIZE_OF_OP,           ARGI_SIZE_OF_OP,            ACPI_TYPE_ANY,               AML_CLASS_EXECUTE,         AML_TYPE_EXEC_1A_0T_1R,   AML_FLAGS_EXEC_1A_0T_1R | AML_NO_OPERAND_RESOLVE),
 /* 31 */ ACPI_OP ("Index",              ARGP_INDEX_OP,             ARGI_INDEX_OP,              ACPI_TYPE_ANY,               AML_CLASS_EXECUTE,         AML_TYPE_EXEC_2A_1T_1R,   AML_FLAGS_EXEC_2A_1T_1R | AML_CONSTANT),
 /* 32 */ ACPI_OP ("Match",              ARGP_MATCH_OP,             ARGI_MATCH_OP,              ACPI_TYPE_ANY,               AML_CLASS_EXECUTE,         AML_TYPE_EXEC_6A_0T_1R,   AML_FLAGS_EXEC_6A_0T_1R | AML_CONSTANT),
 /* 33 */ ACPI_OP ("CreateDWordField",   ARGP_CREATE_DWORD_FIELD_OP,ARGI_CREATE_DWORD_FIELD_OP, ACPI_TYPE_BUFFER_FIELD,      AML_CLASS_CREATE,          AML_TYPE_CREATE_FIELD,    AML_HAS_ARGS | AML_NSOBJECT | AML_NSNODE | AML_DEFER | AML_CREATE),
 /* 34 */ ACPI_OP ("CreateWordField",    ARGP_CREATE_WORD_FIELD_OP, ARGI_CREATE_WORD_FIELD_OP,  ACPI_TYPE_BUFFER_FIELD,      AML_CLASS_CREATE,          AML_TYPE_CREATE_FIELD,    AML_HAS_ARGS | AML_NSOBJECT | AML_NSNODE | AML_DEFER | AML_CREATE),
 /* 35 */ ACPI_OP ("CreateByteField",    ARGP_CREATE_BYTE_FIELD_OP, ARGI_CREATE_BYTE_FIELD_OP,  ACPI_TYPE_BUFFER_FIELD,      AML_CLASS_CREATE,          AML_TYPE_CREATE_FIELD,    AML_HAS_ARGS | AML_NSOBJECT | AML_NSNODE | AML_DEFER | AML_CREATE),
 /* 36 */ ACPI_OP ("CreateBitField",     ARGP_CREATE_BIT_FIELD_OP,  ARGI_CREATE_BIT_FIELD_OP,   ACPI_TYPE_BUFFER_FIELD,      AML_CLASS_CREATE,          AML_TYPE_CREATE_FIELD,    AML_HAS_ARGS | AML_NSOBJECT | AML_NSNODE | AML_DEFER | AML_CREATE),
-/* 37 */ ACPI_OP ("ObjectType",         ARGP_TYPE_OP,              ARGI_TYPE_OP,               ACPI_TYPE_ANY,               AML_CLASS_EXECUTE,         AML_TYPE_EXEC_1A_0T_1R,   AML_FLAGS_EXEC_1A_0T_1R),
+/* 37 */ ACPI_OP ("ObjectType",         ARGP_TYPE_OP,              ARGI_TYPE_OP,               ACPI_TYPE_ANY,               AML_CLASS_EXECUTE,         AML_TYPE_EXEC_1A_0T_1R,   AML_FLAGS_EXEC_1A_0T_1R | AML_NO_OPERAND_RESOLVE),
 /* 38 */ ACPI_OP ("LAnd",               ARGP_LAND_OP,              ARGI_LAND_OP,               ACPI_TYPE_ANY,               AML_CLASS_EXECUTE,         AML_TYPE_EXEC_2A_0T_1R,   AML_FLAGS_EXEC_2A_0T_1R | AML_LOGICAL_NUMERIC | AML_CONSTANT),
 /* 39 */ ACPI_OP ("LOr",                ARGP_LOR_OP,               ARGI_LOR_OP,                ACPI_TYPE_ANY,               AML_CLASS_EXECUTE,         AML_TYPE_EXEC_2A_0T_1R,   AML_FLAGS_EXEC_2A_0T_1R | AML_LOGICAL_NUMERIC | AML_CONSTANT),
 /* 3A */ ACPI_OP ("LNot",               ARGP_LNOT_OP,              ARGI_LNOT_OP,               ACPI_TYPE_ANY,               AML_CLASS_EXECUTE,         AML_TYPE_EXEC_1A_0T_1R,   AML_FLAGS_EXEC_1A_0T_1R | AML_CONSTANT),

include/acpi/acconfig.h

@@ -64,7 +64,7 @@
 
 /* Version string */
 
-#define ACPI_CA_VERSION                 0x20041119
+#define ACPI_CA_VERSION                 0x20041203
 
 /*
  * OS name, used for the _OS object.  The _OS object is essentially obsolete,

include/acpi/acmacros.h

@@ -55,6 +55,7 @@
 
 #define ACPI_SET_BIT(target,bit)        ((target) |= (bit))
 #define ACPI_CLEAR_BIT(target,bit)      ((target) &= ~(bit))
+#define ACPI_MIN(a,b)                   (((a)<(b))?(a):(b))
 
 
 #if ACPI_MACHINE_WIDTH == 16

include/acpi/acobject.h

@@ -94,9 +94,7 @@
 	u32                                     bit_length;         /* Length of field in bits */\
 	u32                                     base_byte_offset;   /* Byte offset within containing object */\
 	u8                                      start_field_bit_offset;/* Bit offset within first field datum (0-63) */\
-	u8                                      datum_valid_bits;   /* Valid bit in first "Field datum" */\
-	u8                                      end_field_valid_bits; /* Valid bits in the last "field datum" */\
-	u8                                      end_buffer_valid_bits; /* Valid bits in the last "buffer datum" */\
+	u8                                      access_bit_width;   /* Read/Write size in bits (8-64) */\
 	u32                                     value;              /* Value to store into the Bank or Index register */\
 	struct acpi_namespace_node              *node;              /* Link back to parent node */
 

include/acpi/amlcode.h

@@ -320,6 +320,7 @@
 #define AML_HAS_TARGET              0x0800
 #define AML_HAS_ARGS                0x1000
 #define AML_CONSTANT                0x2000
+#define AML_NO_OPERAND_RESOLVE      0x4000
 
 /* Convenient flag groupings */