acpi/acpica/exfield.c

47  * The following macros determine a given offset is a COMD field.
49  * 2-byte COMD field at offset 4 and master subspaces (type 3) contains a 4-byte
50  * COMD field starting at offset 12.
60  *                                field access attributes
93  *              obj_desc            - The named field
98  * DESCRIPTION: Read from a named field. Returns either an Integer or a
99  *              Buffer, depending on the size of the field and whether if a
100  *              field is created by the create_field() operator.
137 		   (obj_desc->field.region_obj->region.space_id ==
139 		    || obj_desc->field.region_obj->region.space_id ==
141 		    || obj_desc->field.region_obj->region.space_id ==
143 		    || obj_desc->field.region_obj->region.space_id ==
145 		    || obj_desc->field.region_obj->region.space_id ==
155 	 * Allocate a buffer for the contents of the field.
157 	 * If the field is larger than the current integer width, create
160 	 * field size is equal or smaller than an Integer.
168 	    (acpi_size)ACPI_ROUND_BITS_UP_TO_BYTES(obj_desc->field.bit_length);
194 	    (obj_desc->field.region_obj->region.space_id ==
202 		   (obj_desc->field.region_obj->region.space_id ==
205 		 * Reading from a PCC field unit does not require the handler because
210 				  obj_desc->field.bit_length));
213 		       obj_desc->field.region_obj->field.internal_pcc_buffer +
214 		       obj_desc->field.base_byte_offset,
215 		       (acpi_size)ACPI_ROUND_BITS_UP_TO_BYTES(obj_desc->field.
236 	/* Read from the field */
256  *              obj_desc            - The named field
261  * DESCRIPTION: Write to a named field
295 		   (obj_desc->field.region_obj->region.space_id ==
303 		   (obj_desc->field.region_obj->region.space_id ==
305 		    || obj_desc->field.region_obj->region.space_id ==
307 		    || obj_desc->field.region_obj->region.space_id ==
309 		    || obj_desc->field.region_obj->region.space_id ==
311 		    || obj_desc->field.region_obj->region.space_id ==
321 		   (obj_desc->field.region_obj->region.space_id ==
324 		 * According to the spec a write to the COMD field will invoke the
327 		 * of the field. This is considered safer because some firmware tools
331 		    (acpi_size)ACPI_ROUND_BITS_UP_TO_BYTES(obj_desc->field.
333 		memcpy(obj_desc->field.region_obj->field.internal_pcc_buffer +
334 		       obj_desc->field.base_byte_offset,
337 		if (MASTER_SUBSPACE_COMMAND(obj_desc->field.base_byte_offset)) {
342 					  "PCC COMD field has been written. Invoking PCC handler now.\n"));
346 						  (u64 *)obj_desc->field.
347 						  region_obj->field.
399 	/* Write to the field */