aboutsummaryrefslogtreecommitdiff
path: root/hw/i386/acpi-microvm.c
blob: 54b3af478ae8d416252e9115c14a0724a43e4191 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
/* Support for generating ACPI tables and passing them to Guests
 *
 * Copyright (C) 2008-2010  Kevin O'Connor <kevin@koconnor.net>
 * Copyright (C) 2006 Fabrice Bellard
 * Copyright (C) 2013 Red Hat Inc
 *
 * Author: Michael S. Tsirkin <mst@redhat.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License along
 * with this program; if not, see <http://www.gnu.org/licenses/>.
 */

#include "qemu/osdep.h"
#include "qemu/cutils.h"
#include "qapi/error.h"

#include "exec/memory.h"
#include "hw/acpi/acpi.h"
#include "hw/acpi/aml-build.h"
#include "hw/acpi/bios-linker-loader.h"
#include "hw/acpi/generic_event_device.h"
#include "hw/acpi/utils.h"
#include "hw/boards.h"
#include "hw/i386/fw_cfg.h"
#include "hw/i386/microvm.h"
#include "hw/pci/pci.h"
#include "hw/pci/pcie_host.h"
#include "hw/usb/xhci.h"
#include "hw/virtio/virtio-mmio.h"

#include "acpi-common.h"
#include "acpi-microvm.h"

static void acpi_dsdt_add_virtio(Aml *scope,
                                 MicrovmMachineState *mms)
{
    gchar *separator;
    long int index;
    BusState *bus;
    BusChild *kid;

    bus = sysbus_get_default();
    QTAILQ_FOREACH(kid, &bus->children, sibling) {
        DeviceState *dev = kid->child;
        Object *obj = object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MMIO);

        if (obj) {
            VirtIOMMIOProxy *mmio = VIRTIO_MMIO(obj);
            VirtioBusState *mmio_virtio_bus = &mmio->bus;
            BusState *mmio_bus = &mmio_virtio_bus->parent_obj;

            if (QTAILQ_EMPTY(&mmio_bus->children)) {
                continue;
            }
            separator = g_strrstr(mmio_bus->name, ".");
            if (!separator) {
                continue;
            }
            if (qemu_strtol(separator + 1, NULL, 10, &index) != 0) {
                continue;
            }

            uint32_t irq = mms->virtio_irq_base + index;
            hwaddr base = VIRTIO_MMIO_BASE + index * 512;
            hwaddr size = 512;

            Aml *dev = aml_device("VR%02u", (unsigned)index);
            aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0005")));
            aml_append(dev, aml_name_decl("_UID", aml_int(index)));
            aml_append(dev, aml_name_decl("_CCA", aml_int(1)));

            Aml *crs = aml_resource_template();
            aml_append(crs, aml_memory32_fixed(base, size, AML_READ_WRITE));
            aml_append(crs,
                       aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
                                     AML_EXCLUSIVE, &irq, 1));
            aml_append(dev, aml_name_decl("_CRS", crs));
            aml_append(scope, dev);
        }
    }
}

static void acpi_dsdt_add_xhci(Aml *scope, MicrovmMachineState *mms)
{
    if (machine_usb(MACHINE(mms))) {
        xhci_sysbus_build_aml(scope, MICROVM_XHCI_BASE, MICROVM_XHCI_IRQ);
    }
}

static void acpi_dsdt_add_pci(Aml *scope, MicrovmMachineState *mms)
{
    if (mms->pcie != ON_OFF_AUTO_ON) {
        return;
    }

    acpi_dsdt_add_gpex(scope, &mms->gpex);
}

static void
build_dsdt_microvm(GArray *table_data, BIOSLinker *linker,
                   MicrovmMachineState *mms)
{
    X86MachineState *x86ms = X86_MACHINE(mms);
    Aml *dsdt, *sb_scope, *scope, *pkg;
    bool ambiguous;
    Object *isabus;

    isabus = object_resolve_path_type("", TYPE_ISA_BUS, &ambiguous);
    assert(isabus);
    assert(!ambiguous);

    dsdt = init_aml_allocator();

    /* Reserve space for header */
    acpi_data_push(dsdt->buf, sizeof(AcpiTableHeader));

    sb_scope = aml_scope("_SB");
    fw_cfg_add_acpi_dsdt(sb_scope, x86ms->fw_cfg);
    isa_build_aml(ISA_BUS(isabus), sb_scope);
    build_ged_aml(sb_scope, GED_DEVICE, x86ms->acpi_dev,
                  GED_MMIO_IRQ, AML_SYSTEM_MEMORY, GED_MMIO_BASE);
    acpi_dsdt_add_power_button(sb_scope);
    acpi_dsdt_add_virtio(sb_scope, mms);
    acpi_dsdt_add_xhci(sb_scope, mms);
    acpi_dsdt_add_pci(sb_scope, mms);
    aml_append(dsdt, sb_scope);

    /* ACPI 5.0: Table 7-209 System State Package */
    scope = aml_scope("\\");
    pkg = aml_package(4);
    aml_append(pkg, aml_int(ACPI_GED_SLP_TYP_S5));
    aml_append(pkg, aml_int(0)); /* ignored */
    aml_append(pkg, aml_int(0)); /* reserved */
    aml_append(pkg, aml_int(0)); /* reserved */
    aml_append(scope, aml_name_decl("_S5", pkg));
    aml_append(dsdt, scope);

    /* copy AML table into ACPI tables blob and patch header there */
    g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len);
    build_header(linker, table_data,
        (void *)(table_data->data + table_data->len - dsdt->buf->len),
                 "DSDT", dsdt->buf->len, 2, mms->oem_id, mms->oem_table_id);
    free_aml_allocator();
}

static void acpi_build_microvm(AcpiBuildTables *tables,
                               MicrovmMachineState *mms)
{
    MachineState *machine = MACHINE(mms);
    X86MachineState *x86ms = X86_MACHINE(mms);
    GArray *table_offsets;
    GArray *tables_blob = tables->table_data;
    unsigned dsdt, xsdt;
    AcpiFadtData pmfadt = {
        /* ACPI 5.0: 4.1 Hardware-Reduced ACPI */
        .rev = 5,
        .flags = ((1 << ACPI_FADT_F_HW_REDUCED_ACPI) |
                  (1 << ACPI_FADT_F_RESET_REG_SUP)),

        /* ACPI 5.0: 4.8.3.7 Sleep Control and Status Registers */
        .sleep_ctl = {
            .space_id = AML_AS_SYSTEM_MEMORY,
            .bit_width = 8,
            .address = GED_MMIO_BASE_REGS + ACPI_GED_REG_SLEEP_CTL,
        },
        .sleep_sts = {
            .space_id = AML_AS_SYSTEM_MEMORY,
            .bit_width = 8,
            .address = GED_MMIO_BASE_REGS + ACPI_GED_REG_SLEEP_STS,
        },

        /* ACPI 5.0: 4.8.3.6 Reset Register */
        .reset_reg = {
            .space_id = AML_AS_SYSTEM_MEMORY,
            .bit_width = 8,
            .address = GED_MMIO_BASE_REGS + ACPI_GED_REG_RESET,
        },
        .reset_val = ACPI_GED_RESET_VALUE,
    };

    table_offsets = g_array_new(false, true /* clear */,
                                        sizeof(uint32_t));
    bios_linker_loader_alloc(tables->linker,
                             ACPI_BUILD_TABLE_FILE, tables_blob,
                             64 /* Ensure FACS is aligned */,
                             false /* high memory */);

    dsdt = tables_blob->len;
    build_dsdt_microvm(tables_blob, tables->linker, mms);

    pmfadt.dsdt_tbl_offset = &dsdt;
    pmfadt.xdsdt_tbl_offset = &dsdt;
    acpi_add_table(table_offsets, tables_blob);
    build_fadt(tables_blob, tables->linker, &pmfadt, mms->oem_id,
               mms->oem_table_id);

    acpi_add_table(table_offsets, tables_blob);
    acpi_build_madt(tables_blob, tables->linker, X86_MACHINE(machine),
                    ACPI_DEVICE_IF(x86ms->acpi_dev), mms->oem_id,
                    mms->oem_table_id);

    xsdt = tables_blob->len;
    build_xsdt(tables_blob, tables->linker, table_offsets, mms->oem_id,
               mms->oem_table_id);

    /* RSDP is in FSEG memory, so allocate it separately */
    {
        AcpiRsdpData rsdp_data = {
            /* ACPI 2.0: 5.2.4.3 RSDP Structure */
            .revision = 2, /* xsdt needs v2 */
            .oem_id = mms->oem_id,
            .xsdt_tbl_offset = &xsdt,
            .rsdt_tbl_offset = NULL,
        };
        build_rsdp(tables->rsdp, tables->linker, &rsdp_data);
    }

    /* Cleanup memory that's no longer used. */
    g_array_free(table_offsets, true);
}

static void acpi_build_no_update(void *build_opaque)
{
    /* nothing, microvm tables don't change at runtime */
}

void acpi_setup_microvm(MicrovmMachineState *mms)
{
    X86MachineState *x86ms = X86_MACHINE(mms);
    AcpiBuildTables tables;

    assert(x86ms->fw_cfg);

    if (!x86_machine_is_acpi_enabled(x86ms)) {
        return;
    }

    acpi_build_tables_init(&tables);
    acpi_build_microvm(&tables, mms);

    /* Now expose it all to Guest */
    acpi_add_rom_blob(acpi_build_no_update, NULL,
                      tables.table_data,
                      ACPI_BUILD_TABLE_FILE,
                      ACPI_BUILD_TABLE_MAX_SIZE);
    acpi_add_rom_blob(acpi_build_no_update, NULL,
                      tables.linker->cmd_blob,
                      "etc/table-loader", 0);
    acpi_add_rom_blob(acpi_build_no_update, NULL,
                      tables.rsdp,
                      ACPI_BUILD_RSDP_FILE, 0);

    acpi_build_tables_cleanup(&tables, false);
}