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) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 */
24
25#include "intr_common.h"
26
27static struct av_head	avec_tbl[APIC_MAX_VECTOR+1];
28static uint16_t		shared_tbl[MAX_ISA_IRQ + 1];
29
30static char *
31interrupt_print_bus(uintptr_t dip_addr)
32{
33	char		bind_name[MAXPATHLEN + 1];
34	struct dev_info	dev_info;
35
36	if (mdb_vread(&dev_info, sizeof (dev_info), dip_addr) == -1) {
37		mdb_warn("failed to read child dip");
38		return ("-");
39	}
40
41	while (dev_info.devi_parent != 0) {
42		if (mdb_vread(&dev_info, sizeof (dev_info),
43		    (uintptr_t)dev_info.devi_parent) == -1)
44			break;
45
46		(void) mdb_readstr(bind_name, sizeof (bind_name),
47		    (uintptr_t)dev_info.devi_binding_name);
48		if (strcmp(bind_name, "isa") == 0)
49			return ("ISA");
50		else if (strcmp(bind_name, "pci") == 0 ||
51		    strcmp(bind_name, "npe") == 0)
52			return ("PCI");
53	}
54	return ("-");
55}
56
57
58/*
59 * uppc_interrupt_dump:
60 *	Dump uppc(7d) interrupt information.
61 */
62/* ARGSUSED */
63int
64uppc_interrupt_dump(uintptr_t addr, uint_t flags, int argc,
65    const mdb_arg_t *argv)
66{
67	int		i, j;
68	boolean_t	found = B_FALSE;
69	struct autovec	avhp;
70
71	option_flags = 0;
72	if (mdb_getopts(argc, argv,
73	    'd', MDB_OPT_SETBITS, INTR_DISPLAY_DRVR_INST, &option_flags,
74	    'i', MDB_OPT_SETBITS, INTR_DISPLAY_INTRSTAT, &option_flags,
75	    NULL) != argc)
76		return (DCMD_USAGE);
77
78	if (mdb_readvar(&avec_tbl, "autovect") == -1) {
79		mdb_warn("failed to read autovect");
80		return (DCMD_ERR);
81	}
82
83	if (mdb_readvar(&shared_tbl, "uppc_irq_shared_table") == -1) {
84		mdb_warn("failed to read uppc_irq_shared_table");
85		return (DCMD_ERR);
86	}
87
88	/*
89	 * By default, on all x86 systems ::interrupts from uppc gets
90	 * loaded first. For APIC systems the ::interrupts from either
91	 * apix or pcplusmp ought to be executed. Confusion stems as
92	 * these three modules export the same dcmd.
93	 */
94	for (i = 0; i < MAX_ISA_IRQ + 1; i++)
95		if (shared_tbl[i]) {
96			found = B_TRUE;
97			break;
98		}
99
100	if (found == B_FALSE) {
101		if (mdb_lookup_by_obj("apix", "apixs", NULL) == 0) {
102			return (mdb_call_dcmd("apix`interrupts",
103			    addr, flags, argc, argv));
104		} else if (mdb_lookup_by_obj("pcplusmp", "apic_irq_table",
105		    NULL) == 0) {
106			return (mdb_call_dcmd("pcplusmp`interrupts",
107			    addr, flags, argc, argv));
108		}
109	}
110
111	/* Print the header first */
112	if (option_flags & INTR_DISPLAY_INTRSTAT)
113		mdb_printf("%<u>CPU ");
114	else
115		mdb_printf("%<u>IRQ  Vector IPL(lo/hi) Bus Share ");
116	mdb_printf("%s %</u>\n", option_flags & INTR_DISPLAY_DRVR_INST ?
117	    "Driver Name(s)" : "ISR(s)");
118
119	/* Walk all the entries */
120	for (i = 0; i < MAX_ISA_IRQ + 1; i++) {
121		/* Read the entry, if invalid continue */
122		if (mdb_vread(&avhp, sizeof (struct autovec),
123		    (uintptr_t)avec_tbl[i].avh_link) == -1)
124			continue;
125
126		/* Print each interrupt entry */
127		if (option_flags & INTR_DISPLAY_INTRSTAT)
128			mdb_printf("cpu0\t");
129		else
130			mdb_printf("%-3d   0x%2x   %4d/%-2d   %-4s %-3d  ",
131			    i, i + PIC_VECTBASE, avec_tbl[i].avh_lo_pri,
132			    avec_tbl[i].avh_hi_pri, avhp.av_dip ?
133			    interrupt_print_bus((uintptr_t)avhp.av_dip) : " - ",
134			    shared_tbl[i]);
135
136		if (shared_tbl[i])
137			interrupt_print_isr((uintptr_t)avhp.av_vector,
138			    (uintptr_t)avhp.av_intarg1, (uintptr_t)avhp.av_dip);
139
140		for (j = 1; j < shared_tbl[i]; j++) {
141			if (mdb_vread(&avhp, sizeof (struct autovec),
142			    (uintptr_t)avhp.av_link) != -1)  {
143				mdb_printf(", ");
144				interrupt_print_isr((uintptr_t)avhp.av_vector,
145				    (uintptr_t)avhp.av_intarg1,
146				    (uintptr_t)avhp.av_dip);
147			} else {
148				break;
149			}
150		}
151		mdb_printf("\n");
152	}
153
154	return (DCMD_OK);
155}
156
157
158/*
159 * MDB module linkage information:
160 */
161static const mdb_dcmd_t dcmds[] = {
162	{ "interrupts", "?[-di]", "print interrupts", uppc_interrupt_dump,
163	    interrupt_help},
164	{ "softint", "?[-d]", "print soft interrupts", soft_interrupt_dump,
165	    soft_interrupt_help},
166	{ NULL }
167};
168
169static const mdb_modinfo_t modinfo = { MDB_API_VERSION, dcmds, NULL };
170
171const mdb_modinfo_t *
172_mdb_init(void)
173{
174	GElf_Sym	sym;
175
176	if (mdb_lookup_by_name("gld_intr", &sym) != -1)
177		if (GELF_ST_TYPE(sym.st_info) == STT_FUNC)
178			gld_intr_addr = (uintptr_t)sym.st_value;
179
180	return (&modinfo);
181}
182