apic_common.c revision 12825:e35468461453 
1181430Sstas/*
2181430Sstas * CDDL HEADER START
3181430Sstas *
4181430Sstas * The contents of this file are subject to the terms of the
5228436Sfabient * Common Development and Distribution License (the "License").
6181430Sstas * You may not use this file except in compliance with the License.
7242159Seadler *
8242159Seadler * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9181430Sstas * 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) 2010, Oracle and/or its affiliates. All rights reserved.
23 */
24
25#include "intr_common.h"
26
27#ifdef _KMDB
28
29/* Macros for reading/writing the IOAPIC RDT entries */
30#define	APIC_READ_IOAPIC_RDT_ENTRY_LOW_DWORD(ioapic_ix, ipin) \
31	apic_ioapic_read(ioapic_ix, APIC_RDT_CMD + (2 * (ipin)))
32
33#define	APIC_READ_IOAPIC_RDT_ENTRY_HIGH_DWORD(ioapic_ix, ipin) \
34	apic_ioapic_read(ioapic_ix, APIC_RDT_CMD2 + (2 * (ipin)))
35
36static uint32_t *ioapic_adr[MAX_IO_APIC];
37
38static uint32_t
39apic_ioapic_read(int ioapic_ix, uint32_t reg)
40{
41	volatile uint32_t *ioapic;
42
43	ioapic = ioapic_adr[ioapic_ix];
44	ioapic[APIC_IO_REG] = reg;
45	return (ioapic[APIC_IO_DATA]);
46}
47
48/*
49 * ioapic dcmd - Print out the ioapic registers, nicely formatted.
50 */
51/*ARGSUSED*/
52int
53ioapic(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
54{
55	uint32_t apic_io_max;
56	int	reg;
57	int	reg_max;
58	int	i;
59
60
61	if ((flags & DCMD_ADDRSPEC) || argc != 0)
62		return (DCMD_USAGE);
63
64	if (mdb_readvar(&ioapic_adr, "apicioadr") == -1) {
65		/*
66		 * If the mdb_warn string does not end in a \n, mdb will
67		 * automatically append the reason for the failure.
68		 */
69		mdb_warn("failed to read ioapicadr");
70		return (DCMD_ERR);
71	}
72
73	if (mdb_readvar(&apic_io_max, "apic_io_max") == -1) {
74		/*
75		 * If the mdb_warn string does not end in a \n, mdb will
76		 * automatically append the reason for the failure.
77		 */
78		mdb_warn("failed to read apic_io_max");
79		return (DCMD_ERR);
80	}
81
82	mdb_printf("ioapicadr\t%p\n", ioapic_adr);
83
84	for (i = 0; i < apic_io_max; i++) {
85		/* Bits 23-16 define the maximum redirection entries */
86		reg_max = apic_ioapic_read(i, APIC_VERS_CMD);
87		reg_max = (reg_max >> 16) & 0xff;
88
89		mdb_printf("%4s %8s %8s\n", "reg", "high", " low");
90		for (reg = 0; reg <= reg_max; reg++) {
91			uint32_t high, low;
92
93			high = APIC_READ_IOAPIC_RDT_ENTRY_HIGH_DWORD(i, reg);
94			low = APIC_READ_IOAPIC_RDT_ENTRY_LOW_DWORD(i, reg);
95
96			mdb_printf("%2d   %8x %8x\n", reg, high, low);
97		}
98
99		mdb_printf("\n");
100
101	}
102
103	return (DCMD_OK);
104}
105
106
107/*
108 * apic dcmd - Print out the apic registers, nicely formatted.
109 */
110/*ARGSUSED*/
111int
112apic(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
113{
114	uint32_t *papic;
115
116	if ((flags & DCMD_ADDRSPEC) || argc != 0)
117		return (DCMD_USAGE);
118
119	if (mdb_readvar(&papic, "apicadr") == -1) {
120		/*
121		 * If the mdb_warn string does not end in a \n, mdb will
122		 * automatically append the reason for the failure.
123		 */
124		mdb_warn("failed to read apicadr");
125		return (DCMD_ERR);
126	}
127
128	mdb_printf("apicadr\t%p\n", papic);
129	mdb_printf("as_task_reg\t%x\n", papic[APIC_TASK_REG]);
130	mdb_printf("as_dest_reg\t%x\n", papic[APIC_DEST_REG]);
131	mdb_printf("as_format_reg\t%x\n", papic[APIC_FORMAT_REG]);
132	mdb_printf("as_local_timer\t%x\n", papic[APIC_LOCAL_TIMER]);
133	mdb_printf("as_pcint_vect\t%x\n", papic[APIC_PCINT_VECT]);
134	mdb_printf("as_int_vect0\t%x\n", papic[APIC_INT_VECT0]);
135	mdb_printf("as_int_vect1\t%x\n", papic[APIC_INT_VECT1]);
136	mdb_printf("as_err_vect\t%x\n", papic[APIC_ERR_VECT]);
137	mdb_printf("as_init_count\t%x\n", papic[APIC_INIT_COUNT]);
138	mdb_printf("as_divide_reg\t%x\n", papic[APIC_DIVIDE_REG]);
139	mdb_printf("as_spur_int_reg\t%x\n", papic[APIC_SPUR_INT_REG]);
140
141	return (DCMD_OK);
142}
143
144#endif /* _KMDB */
145