1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright (c) 2009-2010, Intel Corporation.
23 * All rights reserved.
24 */
25
26 #include <sys/types.h>
27 #include <sys/atomic.h>
28 #include <sys/sunddi.h>
29 #include <sys/sunndi.h>
30 #include <sys/acpi/acpi.h>
31 #include <sys/acpica.h>
32 #include <sys/acpidev.h>
33 #include <sys/acpidev_rsc.h>
34 #include <sys/acpidev_dr.h>
35 #include <sys/acpidev_impl.h>
36
37 static ACPI_STATUS acpidev_memory_probe(acpidev_walk_info_t *infop);
38 static acpidev_filter_result_t acpidev_memory_filter(
39 acpidev_walk_info_t *infop, char *devname, int maxlen);
40 static ACPI_STATUS acpidev_memory_init(acpidev_walk_info_t *infop);
41
42 /*
43 * Default class driver for ACPI memory objects.
44 */
45 acpidev_class_t acpidev_class_memory = {
46 0, /* adc_refcnt */
47 ACPIDEV_CLASS_REV1, /* adc_version */
48 ACPIDEV_CLASS_ID_MEMORY, /* adc_class_id */
49 "ACPI memory", /* adc_class_name */
50 ACPIDEV_TYPE_MEMORY, /* adc_dev_type */
51 NULL, /* adc_private */
52 NULL, /* adc_pre_probe */
53 NULL, /* adc_post_probe */
54 acpidev_memory_probe, /* adc_probe */
55 acpidev_memory_filter, /* adc_filter */
56 acpidev_memory_init, /* adc_init */
57 NULL, /* adc_fini */
58 };
59
60 /*
61 * List of class drivers which will be called in order when handling
62 * children of ACPI memory objects.
63 */
64 acpidev_class_list_t *acpidev_class_list_memory = NULL;
65
66 static char *acpidev_memory_device_ids[] = {
67 ACPIDEV_HID_MEMORY,
68 };
69
70 static char *acpidev_memory_uid_formats[] = {
71 "MEM%x-%x",
72 };
73
74 /* Filter rule table for memory objects. */
75 static acpidev_filter_rule_t acpidev_memory_filters[] = {
76 { /* Ignore all memory objects under the ACPI root object */
77 NULL,
78 0,
79 ACPIDEV_FILTER_SKIP,
80 NULL,
81 1,
82 1,
83 NULL,
84 NULL,
85 },
86 { /* Create node and scan child for all other memory objects */
87 NULL,
88 0,
89 ACPIDEV_FILTER_DEFAULT,
90 &acpidev_class_list_device,
91 2,
92 INT_MAX,
93 NULL,
94 ACPIDEV_NODE_NAME_MEMORY,
95 }
96 };
97
98 static ACPI_STATUS
99 acpidev_memory_probe(acpidev_walk_info_t *infop)
100 {
101 ACPI_STATUS rc = AE_OK;
102 int flags;
103
104 ASSERT(infop != NULL);
105 ASSERT(infop->awi_hdl != NULL);
106 ASSERT(infop->awi_info != NULL);
107 if (infop->awi_info->Type != ACPI_TYPE_DEVICE ||
108 acpidev_match_device_id(infop->awi_info,
109 ACPIDEV_ARRAY_PARAM(acpidev_memory_device_ids)) == 0) {
110 return (AE_OK);
111 }
112
113 flags = ACPIDEV_PROCESS_FLAG_SCAN;
114 switch (infop->awi_op_type) {
115 case ACPIDEV_OP_BOOT_PROBE:
116 if (acpica_get_devcfg_feature(ACPI_DEVCFG_MEMORY)) {
117 flags |= ACPIDEV_PROCESS_FLAG_CREATE;
118 acpidev_dr_check(infop);
119 }
120 break;
121
122 case ACPIDEV_OP_BOOT_REPROBE:
123 break;
124
125 case ACPIDEV_OP_HOTPLUG_PROBE:
126 if (acpica_get_devcfg_feature(ACPI_DEVCFG_MEMORY)) {
127 flags |= ACPIDEV_PROCESS_FLAG_CREATE |
128 ACPIDEV_PROCESS_FLAG_SYNCSTATUS |
129 ACPIDEV_PROCESS_FLAG_HOLDBRANCH;
130 }
131 break;
132
133 default:
134 ACPIDEV_DEBUG(CE_WARN, "!acpidev: unknown operation type %u "
135 "in acpidev_memory_probe.", infop->awi_op_type);
136 rc = AE_BAD_PARAMETER;
137 break;
138 }
139
140 if (rc == AE_OK) {
141 rc = acpidev_process_object(infop, flags);
142 }
143 if (ACPI_FAILURE(rc) && rc != AE_NOT_EXIST && rc != AE_ALREADY_EXISTS) {
144 cmn_err(CE_WARN,
145 "!acpidev: failed to process memory object %s.",
146 infop->awi_name);
147 } else {
148 rc = AE_OK;
149 }
150
151 return (rc);
152 }
153
154 static acpidev_filter_result_t
155 acpidev_memory_filter(acpidev_walk_info_t *infop, char *devname, int maxlen)
156 {
157 acpidev_filter_result_t res;
158
159 ASSERT(infop != NULL);
160 if (infop->awi_op_type == ACPIDEV_OP_BOOT_PROBE ||
161 infop->awi_op_type == ACPIDEV_OP_BOOT_REPROBE ||
162 infop->awi_op_type == ACPIDEV_OP_HOTPLUG_PROBE) {
163 res = acpidev_filter_device(infop, infop->awi_hdl,
164 ACPIDEV_ARRAY_PARAM(acpidev_memory_filters),
165 devname, maxlen);
166 } else {
167 res = ACPIDEV_FILTER_FAILED;
168 }
169
170 return (res);
171 }
172
173 static ACPI_STATUS
174 acpidev_memory_init(acpidev_walk_info_t *infop)
175 {
176 char *compatible[] = {
177 ACPIDEV_TYPE_MEMORY,
178 "mem"
179 };
180
181 ASSERT(infop != NULL);
182 ASSERT(infop->awi_hdl != NULL);
183 ASSERT(infop->awi_dip != NULL);
184 if (ACPI_FAILURE(acpidev_resource_process(infop, B_TRUE))) {
185 cmn_err(CE_WARN, "!acpidev: failed to process resources of "
186 "memory device %s.", infop->awi_name);
187 return (AE_ERROR);
188 }
189
190 if (ACPI_FAILURE(acpidev_set_compatible(infop,
191 ACPIDEV_ARRAY_PARAM(compatible)))) {
192 return (AE_ERROR);
193 }
194
195 if (ACPI_FAILURE(acpidev_set_unitaddr(infop,
196 ACPIDEV_ARRAY_PARAM(acpidev_memory_uid_formats), NULL))) {
197 return (AE_ERROR);
198 }
199
200 return (AE_OK);
201 }