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hc
2024-01-04 1543e317f1da31b75942316931e8f491a8920811 
 kernel/drivers/acpi/acpica/dbtest.c
....@@ -10,6 +10,7 @@
1010 #include "acdebug.h"
1111 #include "acnamesp.h"
1212 #include "acpredef.h"
13
+#include "acinterp.h"
1314 
1415 #define _COMPONENT          ACPI_CA_DEBUGGER
1516 ACPI_MODULE_NAME("dbtest")
....@@ -31,6 +32,9 @@
3132 acpi_db_test_string_type(struct acpi_namespace_node *node, u32 byte_length);
3233 
3334 static acpi_status acpi_db_test_package_type(struct acpi_namespace_node *node);
35
+
36
+static acpi_status
37
+acpi_db_test_field_unit_type(union acpi_operand_object *obj_desc);
3438 
3539 static acpi_status
3640 acpi_db_read_from_object(struct acpi_namespace_node *node,
....@@ -74,7 +78,7 @@
7478 static acpi_handle read_handle = NULL;
7579 static acpi_handle write_handle = NULL;
7680 
77
-/* ASL Definitions of the debugger read/write control methods */
81
+/* ASL Definitions of the debugger read/write control methods. AML below. */
7882 
7983 #if 0
8084 definition_block("ssdt.aml", "SSDT", 2, "Intel", "DEBUG", 0x00000001)
....@@ -227,10 +231,8 @@
227231  * RETURN:      Status
228232  *
229233  * DESCRIPTION: Test one namespace object. Supported types are Integer,
230
- *              String, Buffer, buffer_field, and field_unit. All other object
231
- *              types are simply ignored.
232
- *
233
- *              Note: Support for Packages is not implemented.
234
+ *              String, Buffer, Package, buffer_field, and field_unit.
235
+ *              All other object types are simply ignored.
234236  *
235237  ******************************************************************************/
236238 
....@@ -240,7 +242,6 @@
240242 {
241243 	struct acpi_namespace_node *node;
242244 	union acpi_operand_object *obj_desc;
243
-	union acpi_operand_object *region_obj;
244245 	acpi_object_type local_type;
245246 	u32 bit_length = 0;
246247 	u32 byte_length = 0;
....@@ -281,18 +282,21 @@
281282 		break;
282283 
283284 	case ACPI_TYPE_FIELD_UNIT:
284
-	case ACPI_TYPE_BUFFER_FIELD:
285285 	case ACPI_TYPE_LOCAL_REGION_FIELD:
286286 	case ACPI_TYPE_LOCAL_INDEX_FIELD:
287287 	case ACPI_TYPE_LOCAL_BANK_FIELD:
288288 
289
+		local_type = ACPI_TYPE_FIELD_UNIT;
290
+		break;
291
+
292
+	case ACPI_TYPE_BUFFER_FIELD:
293
+		/*
294
+		 * The returned object will be a Buffer if the field length
295
+		 * is larger than the size of an Integer (32 or 64 bits
296
+		 * depending on the DSDT version).
297
+		 */
289298 		local_type = ACPI_TYPE_INTEGER;
290299 		if (obj_desc) {
291
-			/*
292
-			 * Returned object will be a Buffer if the field length
293
-			 * is larger than the size of an Integer (32 or 64 bits
294
-			 * depending on the DSDT version).
295
-			 */
296300 			bit_length = obj_desc->common_field.bit_length;
297301 			byte_length = ACPI_ROUND_BITS_UP_TO_BYTES(bit_length);
298302 			if (bit_length > acpi_gbl_integer_bit_width) {
....@@ -303,7 +307,7 @@
303307 
304308 	default:
305309 
306
-		/* Ignore all other types */
310
+		/* Ignore all non-data types - Methods, Devices, Scopes, etc. */
307311 
308312 		return (AE_OK);
309313 	}
....@@ -314,38 +318,8 @@
314318 		       acpi_ut_get_type_name(node->type), node->name.ascii);
315319 
316320 	if (!obj_desc) {
317
-		acpi_os_printf(" Ignoring, no attached object\n");
321
+		acpi_os_printf(" No attached sub-object, ignoring\n");
318322 		return (AE_OK);
319
-	}
320
-
321
-	/*
322
-	 * Check for unsupported region types. Note: acpi_exec simulates
323
-	 * access to system_memory, system_IO, PCI_Config, and EC.
324
-	 */
325
-	switch (node->type) {
326
-	case ACPI_TYPE_LOCAL_REGION_FIELD:
327
-
328
-		region_obj = obj_desc->field.region_obj;
329
-		switch (region_obj->region.space_id) {
330
-		case ACPI_ADR_SPACE_SYSTEM_MEMORY:
331
-		case ACPI_ADR_SPACE_SYSTEM_IO:
332
-		case ACPI_ADR_SPACE_PCI_CONFIG:
333
-
334
-			break;
335
-
336
-		default:
337
-
338
-			acpi_os_printf
339
-			    ("    %s space is not supported in this command [%4.4s]\n",
340
-			     acpi_ut_get_region_name(region_obj->region.
341
-						     space_id),
342
-			     region_obj->region.node->name.ascii);
343
-			return (AE_OK);
344
-		}
345
-		break;
346
-
347
-	default:
348
-		break;
349323 	}
350324 
351325 	/* At this point, we have resolved the object to one of the major types */
....@@ -371,6 +345,11 @@
371345 		status = acpi_db_test_package_type(node);
372346 		break;
373347 
348
+	case ACPI_TYPE_FIELD_UNIT:
349
+
350
+		status = acpi_db_test_field_unit_type(obj_desc);
351
+		break;
352
+
374353 	default:
375354 
376355 		acpi_os_printf(" Ignoring, type not implemented (%2.2X)",
....@@ -382,24 +361,8 @@
382361 
383362 	if (ACPI_FAILURE(status)) {
384363 		status = AE_OK;
385
-		goto exit;
386364 	}
387365 
388
-	switch (node->type) {
389
-	case ACPI_TYPE_LOCAL_REGION_FIELD:
390
-
391
-		region_obj = obj_desc->field.region_obj;
392
-		acpi_os_printf(" (%s)",
393
-			       acpi_ut_get_region_name(region_obj->region.
394
-						       space_id));
395
-
396
-		break;
397
-
398
-	default:
399
-		break;
400
-	}
401
-
402
-exit:
403366 	acpi_os_printf("\n");
404367 	return (status);
405368 }
....@@ -444,7 +407,7 @@
444407 		return (status);
445408 	}
446409 
447
-	acpi_os_printf(" (%4.4X/%3.3X) %8.8X%8.8X",
410
+	acpi_os_printf(ACPI_DEBUG_LENGTH_FORMAT " %8.8X%8.8X",
448411 		       bit_length, ACPI_ROUND_BITS_UP_TO_BYTES(bit_length),
449412 		       ACPI_FORMAT_UINT64(temp1->integer.value));
450413 
....@@ -558,8 +521,9 @@
558521 
559522 	/* Emit a few bytes of the buffer */
560523 
561
-	acpi_os_printf(" (%4.4X/%3.3X)", bit_length, temp1->buffer.length);
562
-	for (i = 0; ((i < 4) && (i < byte_length)); i++) {
524
+	acpi_os_printf(ACPI_DEBUG_LENGTH_FORMAT, bit_length,
525
+		       temp1->buffer.length);
526
+	for (i = 0; ((i < 8) && (i < byte_length)); i++) {
563527 		acpi_os_printf(" %2.2X", temp1->buffer.pointer[i]);
564528 	}
565529 	acpi_os_printf("... ");
....@@ -665,8 +629,9 @@
665629 		return (status);
666630 	}
667631 
668
-	acpi_os_printf(" (%4.4X/%3.3X) \"%s\"", (temp1->string.length * 8),
669
-		       temp1->string.length, temp1->string.pointer);
632
+	acpi_os_printf(ACPI_DEBUG_LENGTH_FORMAT " \"%s\"",
633
+		       (temp1->string.length * 8), temp1->string.length,
634
+		       temp1->string.pointer);
670635 
671636 	/* Write a new value */
672637 
....@@ -750,13 +715,80 @@
750715 		return (status);
751716 	}
752717 
753
-	acpi_os_printf(" %8.8X Elements", temp1->package.count);
718
+	acpi_os_printf(" %.2X Elements", temp1->package.count);
754719 	acpi_os_free(temp1);
755720 	return (status);
756721 }
757722 
758723 /*******************************************************************************
759724  *
725
+ * FUNCTION:    acpi_db_test_field_unit_type
726
+ *
727
+ * PARAMETERS:  obj_desc                - A field unit object
728
+ *
729
+ * RETURN:      Status
730
+ *
731
+ * DESCRIPTION: Test read/write on a named field unit.
732
+ *
733
+ ******************************************************************************/
734
+
735
+static acpi_status
736
+acpi_db_test_field_unit_type(union acpi_operand_object *obj_desc)
737
+{
738
+	union acpi_operand_object *region_obj;
739
+	u32 bit_length = 0;
740
+	u32 byte_length = 0;
741
+	acpi_status status = AE_OK;
742
+	union acpi_operand_object *ret_buffer_desc;
743
+
744
+	/* Supported spaces are memory/io/pci_config */
745
+
746
+	region_obj = obj_desc->field.region_obj;
747
+	switch (region_obj->region.space_id) {
748
+	case ACPI_ADR_SPACE_SYSTEM_MEMORY:
749
+	case ACPI_ADR_SPACE_SYSTEM_IO:
750
+	case ACPI_ADR_SPACE_PCI_CONFIG:
751
+
752
+		/* Need the interpreter to execute */
753
+
754
+		acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER);
755
+		acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
756
+
757
+		/* Exercise read-then-write */
758
+
759
+		status =
760
+		    acpi_ex_read_data_from_field(NULL, obj_desc,
761
+						 &ret_buffer_desc);
762
+		if (status == AE_OK) {
763
+			acpi_ex_write_data_to_field(ret_buffer_desc, obj_desc,
764
+						    NULL);
765
+			acpi_ut_remove_reference(ret_buffer_desc);
766
+		}
767
+
768
+		acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
769
+		acpi_ut_release_mutex(ACPI_MTX_INTERPRETER);
770
+
771
+		bit_length = obj_desc->common_field.bit_length;
772
+		byte_length = ACPI_ROUND_BITS_UP_TO_BYTES(bit_length);
773
+
774
+		acpi_os_printf(ACPI_DEBUG_LENGTH_FORMAT " [%s]", bit_length,
775
+			       byte_length,
776
+			       acpi_ut_get_region_name(region_obj->region.
777
+						       space_id));
778
+		return (status);
779
+
780
+	default:
781
+
782
+		acpi_os_printf
783
+		    ("      %s address space is not supported in this command [%4.4s]",
784
+		     acpi_ut_get_region_name(region_obj->region.space_id),
785
+		     region_obj->region.node->name.ascii);
786
+		return (AE_OK);
787
+	}
788
+}
789
+
790
+/*******************************************************************************
791
+ *
760792  * FUNCTION:    acpi_db_read_from_object
761793  *
762794  * PARAMETERS:  node                - Parent NS node for the object