apic_common.c revision 12683:92e6427b7b70 
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) 2010, Oracle and/or its affiliates. All rights reserved.
23 */
24
25#include "intr_common.h"
26
27
28/* Macros for reading/writing the IOAPIC RDT entries */
29#define	APIC_READ_IOAPIC_RDT_ENTRY_LOW_DWORD(ioapic_ix, ipin) \
30	apic_ioapic_read(ioapic_ix, APIC_RDT_CMD + (2 * (ipin)))
31
32#define	APIC_READ_IOAPIC_RDT_ENTRY_HIGH_DWORD(ioapic_ix, ipin) \
33	apic_ioapic_read(ioapic_ix, APIC_RDT_CMD2 + (2 * (ipin)))
34
35static uint32_t *ioapic_adr[MAX_IO_APIC];
36
37static uint32_t
38apic_ioapic_read(int ioapic_ix, uint32_t reg)
39{
40	volatile uint32_t *ioapic;
41
42	ioapic = ioapic_adr[ioapic_ix];
43	ioapic[APIC_IO_REG] = reg;
44	return (ioapic[APIC_IO_DATA]);
45}
46
47/*
48 * ioapic dcmd - Print out the ioapic registers, nicely formatted.
49 */
50/*ARGSUSED*/
51int
52ioapic(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
53{
54	uint32_t apic_io_max;
55	int	reg;
56	int	reg_max;
57	int	i;
58
59
60	if ((flags & DCMD_ADDRSPEC) || argc != 0)
61		return (DCMD_USAGE);
62
63	if (mdb_readvar(&ioapic_adr, "apicioadr") == -1) {
64		/*
65		 * If the mdb_warn string does not end in a \n, mdb will
66		 * automatically append the reason for the failure.
67		 */
68		mdb_warn("failed to read ioapicadr");
69		return (DCMD_ERR);
70	}
71
72	if (mdb_readvar(&apic_io_max, "apic_io_max") == -1) {
73		/*
74		 * If the mdb_warn string does not end in a \n, mdb will
75		 * automatically append the reason for the failure.
76		 */
77		mdb_warn("failed to read apic_io_max");
78		return (DCMD_ERR);
79	}
80
81	mdb_printf("ioapicadr\t%p\n", ioapic_adr);
82
83	for (i = 0; i < apic_io_max; i++) {
84		/* Bits 23-16 define the maximum redirection entries */
85		reg_max = apic_ioapic_read(i, APIC_VERS_CMD);
86		reg_max = (reg_max >> 16) & 0xff;
87
88		mdb_printf("%4s %8s %8s\n", "reg", "high", " low");
89		for (reg = 0; reg <= reg_max; reg++) {
90			uint32_t high, low;
91
92			high = APIC_READ_IOAPIC_RDT_ENTRY_HIGH_DWORD(i, reg);
93			low = APIC_READ_IOAPIC_RDT_ENTRY_LOW_DWORD(i, reg);
94
95			mdb_printf("%2d   %8x %8x\n", reg, high, low);
96		}
97
98		mdb_printf("\n");
99
100	}
101
102	return (DCMD_OK);
103}
104
105
106/*
107 * apic dcmd - Print out the apic registers, nicely formatted.
108 */
109/*ARGSUSED*/
110int
111apic(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
112{
113	uint32_t *papic;
114
115	if ((flags & DCMD_ADDRSPEC) || argc != 0)
116		return (DCMD_USAGE);
117
118	if (mdb_readvar(&papic, "apicadr") == -1) {
119		/*
120		 * If the mdb_warn string does not end in a \n, mdb will
121		 * automatically append the reason for the failure.
122		 */
123		mdb_warn("failed to read apicadr");
124		return (DCMD_ERR);
125	}
126
127	mdb_printf("apicadr\t%p\n", papic);
128	mdb_printf("as_task_reg\t%x\n", papic[APIC_TASK_REG]);
129	mdb_printf("as_dest_reg\t%x\n", papic[APIC_DEST_REG]);
130	mdb_printf("as_format_reg\t%x\n", papic[APIC_FORMAT_REG]);
131	mdb_printf("as_local_timer\t%x\n", papic[APIC_LOCAL_TIMER]);
132	mdb_printf("as_pcint_vect\t%x\n", papic[APIC_PCINT_VECT]);
133	mdb_printf("as_int_vect0\t%x\n", papic[APIC_INT_VECT0]);
134	mdb_printf("as_int_vect1\t%x\n", papic[APIC_INT_VECT1]);
135	mdb_printf("as_err_vect\t%x\n", papic[APIC_ERR_VECT]);
136	mdb_printf("as_init_count\t%x\n", papic[APIC_INIT_COUNT]);
137	mdb_printf("as_divide_reg\t%x\n", papic[APIC_DIVIDE_REG]);
138	mdb_printf("as_spur_int_reg\t%x\n", papic[APIC_SPUR_INT_REG]);
139
140	return (DCMD_OK);
141}
142