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 /*
23 * Copyright (c) 2010, Intel Corporation.
24 * All rights reserved.
25 */
26
27 #include <sys/types.h>
28 #include <sys/atomic.h>
29 #include <sys/sunddi.h>
30 #include <sys/sunndi.h>
31 #include <acpica/include/acpi.h>
32 #include <sys/acpica.h>
33 #include <sys/acpidev.h>
34 #include <sys/acpidev_rsc.h>
35 #include <sys/acpidev_dr.h>
36 #include <sys/acpidev_impl.h>
37
38 static ACPI_STATUS acpidev_pci_probe(acpidev_walk_info_t *infop);
39
40 /*
41 * Default class driver for PCI/PCIEX Host Bridge devices.
42 */
43 acpidev_class_t acpidev_class_pci = {
44 0, /* adc_refcnt */
45 ACPIDEV_CLASS_REV1, /* adc_version */
46 ACPIDEV_CLASS_ID_PCI, /* adc_class_id */
47 "PCI/PCIex Host Bridge", /* adc_class_name */
48 ACPIDEV_TYPE_PCI, /* adc_dev_type */
49 NULL, /* adc_private */
50 NULL, /* adc_pre_probe */
51 NULL, /* adc_post_probe */
52 acpidev_pci_probe, /* adc_probe */
53 NULL, /* adc_filter */
54 NULL, /* adc_init */
55 NULL, /* adc_fini */
56 };
57
58 static char *acpidev_pci_device_ids[] = {
59 ACPIDEV_HID_PCIEX_HOSTBRIDGE,
60 ACPIDEV_HID_PCI_HOSTBRIDGE,
61 };
62
63 static char *acpidev_pciex_device_ids[] = {
64 ACPIDEV_HID_PCIEX_HOSTBRIDGE,
65 };
66
67 static void
68 acpidev_pci_update_status(acpidev_walk_info_t *infop)
69 {
70 int status;
71 dev_info_t *dip = NULL;
72 acpidev_data_handle_t dhdl;
73
74 dhdl = infop->awi_data;
75 ASSERT((dhdl->aod_iflag & ACPIDEV_ODF_DEVINFO_CREATED) == 0);
76 ASSERT((dhdl->aod_iflag & ACPIDEV_ODF_DEVINFO_TAGGED) == 0);
77 if ((dhdl->aod_iflag & ACPIDEV_ODF_STATUS_VALID) == 0) {
78 status = acpidev_query_device_status(infop->awi_hdl);
79 dhdl->aod_status = status;
80 dhdl->aod_iflag |= ACPIDEV_ODF_STATUS_VALID;
81 } else {
82 status = dhdl->aod_status;
83 }
84 dhdl->aod_level = infop->awi_level;
85 dhdl->aod_hdl = infop->awi_hdl;
86 dhdl->aod_class = NULL;
87 dhdl->aod_class_list = NULL;
88 if (acpidev_match_device_id(infop->awi_info,
89 ACPIDEV_ARRAY_PARAM(acpidev_pciex_device_ids))) {
90 dhdl->aod_class_id = ACPIDEV_CLASS_ID_PCIEX;
91 } else {
92 dhdl->aod_class_id = ACPIDEV_CLASS_ID_PCI;
93 }
94
95 if (ACPI_FAILURE(acpica_get_devinfo(infop->awi_hdl, &dip))) {
96 dip = NULL;
97 } else {
98 ASSERT(dip != NULL);
99 }
100 if (acpidev_check_device_enabled(status)) {
101 /*
102 * Mark the device as DISABLE if no device node created.
103 * BIOS may hide some special PCI/PCIex buses from OS.
104 */
105 if (dip == NULL) {
106 dhdl->aod_dip = NULL;
107 dhdl->aod_status &= ~ACPI_STA_DEVICE_ENABLED;
108 } else {
109 dhdl->aod_dip = dip;
110 dhdl->aod_iflag |= ACPIDEV_ODF_DEVINFO_CREATED;
111 }
112 } else {
113 ASSERT(dip == NULL);
114 dhdl->aod_dip = NULL;
115 dhdl->aod_status &= ~ACPI_STA_DEVICE_ENABLED;
116 }
117 }
118
119 static ACPI_STATUS
120 acpidev_pci_probe(acpidev_walk_info_t *infop)
121 {
122 ACPI_STATUS rc = AE_OK;
123
124 ASSERT(infop != NULL);
125 ASSERT(infop->awi_hdl != NULL);
126 ASSERT(infop->awi_info != NULL);
127 if (infop->awi_info->Type != ACPI_TYPE_DEVICE ||
128 acpidev_match_device_id(infop->awi_info,
129 ACPIDEV_ARRAY_PARAM(acpidev_pci_device_ids)) == B_FALSE) {
130 return (AE_OK);
131 }
132
133 if (acpica_get_devcfg_feature(ACPI_DEVCFG_PCI) == 0) {
134 return (AE_OK);
135 }
136
137 if (infop->awi_op_type == ACPIDEV_OP_BOOT_PROBE) {
138 /*
139 * Check hotplug capability on the first pass.
140 */
141 acpidev_dr_check(infop);
142 } else if (infop->awi_op_type == ACPIDEV_OP_BOOT_REPROBE) {
143 /*
144 * Check whether the PCI device enumerator has created device
145 * nodes for PCI/PCIEX host bridges.
146 */
147 acpidev_pci_update_status(infop);
148 } else if (infop->awi_op_type == ACPIDEV_OP_HOTPLUG_PROBE) {
149 /*
150 * No support of PCI/PCIEX host bridge hotplug yet.
151 * It will come in next phase.
152 */
153 cmn_err(CE_WARN,
154 "!acpidev: no support of PCI/PCIEX host bridge hotplug.");
155 /*
156 * Don't block the hot-adding process, just skip it.
157 */
158 rc = AE_OK;
159 } else {
160 ACPIDEV_DEBUG(CE_WARN, "!acpidev: unknown operation type %u "
161 "in acpidev_pci_probe().", infop->awi_op_type);
162 rc = AE_BAD_PARAMETER;
163 }
164 if (ACPI_FAILURE(rc) && rc != AE_NOT_EXIST && rc != AE_ALREADY_EXISTS) {
165 cmn_err(CE_CONT, "?acpidev: failed to process PCI/PCIEX host "
166 "bridge object %s.\n", infop->awi_name);
167 } else {
168 rc = AE_OK;
169 }
170
171 return (rc);
172 }