1/*-
2 * Copyright (c) 2001 Doug Rabson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29#include <contrib/dev/acpica/include/acpi.h>
30#include <contrib/dev/acpica/include/actables.h>
31
32#include <machine/md_var.h>
33
34struct sapic *sapic_create(int, int, u_int64_t);
35
36static void
37print_entry(ACPI_SUBTABLE_HEADER *entry)
38{
39
40	switch (entry->Type) {
41	case ACPI_MADT_TYPE_INTERRUPT_OVERRIDE: {
42		ACPI_MADT_INTERRUPT_OVERRIDE *iso =
43		    (ACPI_MADT_INTERRUPT_OVERRIDE *)entry;
44		printf("\tInterrupt source override entry\n");
45		printf("\t\tBus=%u, Source=%u, Irq=0x%x\n", iso->Bus,
46		    iso->SourceIrq, iso->GlobalIrq);
47		break;
48	}
49
50	case ACPI_MADT_TYPE_IO_APIC:
51		printf("\tI/O APIC entry\n");
52		break;
53
54	case ACPI_MADT_TYPE_IO_SAPIC: {
55		ACPI_MADT_IO_SAPIC *sapic = (ACPI_MADT_IO_SAPIC *)entry;
56		printf("\tI/O SAPIC entry\n");
57		printf("\t\tId=0x%x, InterruptBase=0x%x, Address=0x%lx\n",
58		    sapic->Id, sapic->GlobalIrqBase, sapic->Address);
59		break;
60	}
61
62	case ACPI_MADT_TYPE_LOCAL_APIC_NMI:
63		printf("\tLocal APIC NMI entry\n");
64		break;
65
66	case ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE: {
67		ACPI_MADT_LOCAL_APIC_OVERRIDE *lapic =
68		    (ACPI_MADT_LOCAL_APIC_OVERRIDE *)entry;
69		printf("\tLocal APIC override entry\n");
70		printf("\t\tLocal APIC address=0x%jx\n", lapic->Address);
71		break;
72	}
73
74	case ACPI_MADT_TYPE_LOCAL_SAPIC: {
75		ACPI_MADT_LOCAL_SAPIC *sapic = (ACPI_MADT_LOCAL_SAPIC *)entry;
76		printf("\tLocal SAPIC entry\n");
77		printf("\t\tProcessorId=0x%x, Id=0x%x, Eid=0x%x",
78		    sapic->ProcessorId, sapic->Id, sapic->Eid);
79		if (!(sapic->LapicFlags & ACPI_MADT_ENABLED))
80			printf(" (disabled)");
81		printf("\n");
82		break;
83	}
84
85	case ACPI_MADT_TYPE_NMI_SOURCE:
86		printf("\tNMI entry\n");
87		break;
88
89	case ACPI_MADT_TYPE_INTERRUPT_SOURCE: {
90		ACPI_MADT_INTERRUPT_SOURCE *pis =
91		    (ACPI_MADT_INTERRUPT_SOURCE *)entry;
92		printf("\tPlatform interrupt entry\n");
93		printf("\t\tPolarity=%u, TriggerMode=%u, Id=0x%x, "
94		    "Eid=0x%x, Vector=0x%x, Irq=%d\n",
95		    pis->IntiFlags & ACPI_MADT_POLARITY_MASK,
96		    (pis->IntiFlags & ACPI_MADT_TRIGGER_MASK) >> 2,
97		    pis->Id, pis->Eid, pis->IoSapicVector, pis->GlobalIrq);
98		break;
99	}
100
101	case ACPI_MADT_TYPE_LOCAL_APIC:
102		printf("\tLocal APIC entry\n");
103		break;
104
105	default:
106		printf("\tUnknown type %d entry\n", entry->Type);
107		break;
108	}
109}
110
111void
112ia64_probe_sapics(void)
113{
114	ACPI_PHYSICAL_ADDRESS rsdp_ptr;
115	ACPI_SUBTABLE_HEADER *entry;
116	ACPI_TABLE_MADT *table;
117	ACPI_TABLE_RSDP *rsdp;
118	ACPI_TABLE_XSDT *xsdt;
119	char *end, *p;
120	int t, tables;
121
122	if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
123		return;
124
125	rsdp = (ACPI_TABLE_RSDP *)IA64_PHYS_TO_RR7(rsdp_ptr);
126	xsdt = (ACPI_TABLE_XSDT *)IA64_PHYS_TO_RR7(rsdp->XsdtPhysicalAddress);
127
128	tables = (UINT64 *)((char *)xsdt + xsdt->Header.Length) -
129	    xsdt->TableOffsetEntry;
130
131	for (t = 0; t < tables; t++) {
132		table = (ACPI_TABLE_MADT *)
133		    IA64_PHYS_TO_RR7(xsdt->TableOffsetEntry[t]);
134
135		if (bootverbose)
136			printf("Table '%c%c%c%c' at %p\n",
137			    table->Header.Signature[0],
138			    table->Header.Signature[1],
139			    table->Header.Signature[2],
140			    table->Header.Signature[3], table);
141
142		if (strncmp(table->Header.Signature, ACPI_SIG_MADT,
143		    ACPI_NAME_SIZE) != 0 ||
144		    ACPI_FAILURE(AcpiTbChecksum((void *)table,
145		    table->Header.Length)))
146			continue;
147
148		/* Save the address of the processor interrupt block. */
149		if (bootverbose)
150			printf("\tLocal APIC address=0x%x\n", table->Address);
151		ia64_lapic_addr = table->Address;
152
153		end = (char *)table + table->Header.Length;
154		p = (char *)(table + 1);
155		while (p < end) {
156			entry = (ACPI_SUBTABLE_HEADER *)p;
157
158			if (bootverbose)
159				print_entry(entry);
160
161			switch (entry->Type) {
162			case ACPI_MADT_TYPE_IO_SAPIC: {
163				ACPI_MADT_IO_SAPIC *sapic =
164				    (ACPI_MADT_IO_SAPIC *)entry;
165				sapic_create(sapic->Id, sapic->GlobalIrqBase,
166				    sapic->Address);
167				break;
168			}
169
170			case ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE: {
171				ACPI_MADT_LOCAL_APIC_OVERRIDE *lapic =
172				    (ACPI_MADT_LOCAL_APIC_OVERRIDE *)entry;
173				ia64_lapic_addr = lapic->Address;
174				break;
175			}
176
177#ifdef SMP
178			case ACPI_MADT_TYPE_LOCAL_SAPIC: {
179				ACPI_MADT_LOCAL_SAPIC *sapic =
180				    (ACPI_MADT_LOCAL_SAPIC *)entry;
181				if (sapic->LapicFlags & ACPI_MADT_ENABLED)
182					cpu_mp_add(sapic->ProcessorId,
183					    sapic->Id, sapic->Eid);
184				break;
185			}
186#endif
187
188			default:
189				break;
190			}
191
192			p += entry->Length;
193		}
194	}
195}
196
197/*
198 * Count the number of local SAPIC entries in the APIC table. Every enabled
199 * entry corresponds to a processor.
200 */
201int
202ia64_count_cpus(void)
203{
204	ACPI_PHYSICAL_ADDRESS rsdp_ptr;
205	ACPI_MADT_LOCAL_SAPIC *entry;
206	ACPI_TABLE_MADT *table;
207	ACPI_TABLE_RSDP *rsdp;
208	ACPI_TABLE_XSDT *xsdt;
209	char *end, *p;
210	int cpus, t, tables;
211
212	if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
213		return (0);
214
215	rsdp = (ACPI_TABLE_RSDP *)IA64_PHYS_TO_RR7(rsdp_ptr);
216	xsdt = (ACPI_TABLE_XSDT *)IA64_PHYS_TO_RR7(rsdp->XsdtPhysicalAddress);
217
218	tables = (UINT64 *)((char *)xsdt + xsdt->Header.Length) -
219	    xsdt->TableOffsetEntry;
220
221	cpus = 0;
222
223	for (t = 0; t < tables; t++) {
224		table = (ACPI_TABLE_MADT *)
225		    IA64_PHYS_TO_RR7(xsdt->TableOffsetEntry[t]);
226
227		if (strncmp(table->Header.Signature, ACPI_SIG_MADT,
228		    ACPI_NAME_SIZE) != 0 ||
229		    ACPI_FAILURE(AcpiTbChecksum((void *)table,
230			table->Header.Length)))
231			continue;
232
233		end = (char *)table + table->Header.Length;
234		p = (char *)(table + 1);
235		while (p < end) {
236			entry = (ACPI_MADT_LOCAL_SAPIC *)p;
237
238			if (entry->Header.Type == ACPI_MADT_TYPE_LOCAL_SAPIC &&
239			    (entry->LapicFlags & ACPI_MADT_ENABLED))
240				cpus++;
241
242			p += entry->Header.Length;
243		}
244	}
245
246	return (cpus);
247}
248