void aml_append(Aml *parent_ctx, Aml *child)
{
GArray *buf = build_alloc_array();
build_append_array(buf, child->buf);
switch (child->block_flags) {
case AML_OPCODE:
build_append_byte(parent_ctx->buf, child->op);
break;
case AML_EXT_PACKAGE:
build_extop_package(buf, child->op);
break;
case AML_PACKAGE:
build_package(buf, child->op);
break;
case AML_RES_TEMPLATE:
build_append_byte(buf, 0x79); /* EndTag */
/*
* checksum operations are treated as succeeded if checksum
* field is zero. [ACPI Spec 1.0b, 6.4.2.8 End Tag]
*/
build_append_byte(buf, 0);
/* fall through, to pack resources in buffer */
case AML_BUFFER:
build_buffer(buf, child->op);
break;
case AML_NO_OPCODE:
break;
default:
assert(0);
break;
}
build_append_array(parent_ctx->buf, buf);
build_free_array(buf);
}
static void build_pci_bus_end(PCIBus *bus, void *bus_state)
{
AcpiBuildPciBusHotplugState *child = bus_state;
AcpiBuildPciBusHotplugState *parent = child->parent;
GArray *bus_table = build_alloc_array();
DECLARE_BITMAP(slot_hotplug_enable, PCI_SLOT_MAX);
DECLARE_BITMAP(slot_device_present, PCI_SLOT_MAX);
DECLARE_BITMAP(slot_device_system, PCI_SLOT_MAX);
DECLARE_BITMAP(slot_device_vga, PCI_SLOT_MAX);
DECLARE_BITMAP(slot_device_qxl, PCI_SLOT_MAX);
uint8_t op;
int i;
QObject *bsel;
GArray *method;
bool bus_hotplug_support = false;
if (bus->parent_dev) {
op = 0x82; /* DeviceOp */
build_append_nameseg(bus_table, "S%.02X_",
bus->parent_dev->devfn);
build_append_byte(bus_table, 0x08); /* NameOp */
build_append_nameseg(bus_table, "_SUN");
build_append_value(bus_table, PCI_SLOT(bus->parent_dev->devfn), 1);
build_append_byte(bus_table, 0x08); /* NameOp */
build_append_nameseg(bus_table, "_ADR");
build_append_value(bus_table, (PCI_SLOT(bus->parent_dev->devfn) << 16) |
PCI_FUNC(bus->parent_dev->devfn), 4);
} else {
op = 0x10; /* ScopeOp */;
build_append_nameseg(bus_table, "PCI0");
}
bsel = object_property_get_qobject(OBJECT(bus), ACPI_PCIHP_PROP_BSEL, NULL);
if (bsel) {
build_append_byte(bus_table, 0x08); /* NameOp */
build_append_nameseg(bus_table, "BSEL");
build_append_int(bus_table, qint_get_int(qobject_to_qint(bsel)));
memset(slot_hotplug_enable, 0xff, sizeof slot_hotplug_enable);
} else {
/* No bsel - no slots are hot-pluggable */
memset(slot_hotplug_enable, 0x00, sizeof slot_hotplug_enable);
}
memset(slot_device_present, 0x00, sizeof slot_device_present);
memset(slot_device_system, 0x00, sizeof slot_device_present);
memset(slot_device_vga, 0x00, sizeof slot_device_vga);
memset(slot_device_qxl, 0x00, sizeof slot_device_qxl);
for (i = 0; i < ARRAY_SIZE(bus->devices); i += PCI_FUNC_MAX) {
DeviceClass *dc;
PCIDeviceClass *pc;
PCIDevice *pdev = bus->devices[i];
int slot = PCI_SLOT(i);
if (!pdev) {
continue;
}
set_bit(slot, slot_device_present);
pc = PCI_DEVICE_GET_CLASS(pdev);
dc = DEVICE_GET_CLASS(pdev);
if (pc->class_id == PCI_CLASS_BRIDGE_ISA) {
set_bit(slot, slot_device_system);
}
if (pc->class_id == PCI_CLASS_DISPLAY_VGA) {
set_bit(slot, slot_device_vga);
if (object_dynamic_cast(OBJECT(pdev), "qxl-vga")) {
set_bit(slot, slot_device_qxl);
}
}
if (!dc->hotpluggable || pc->is_bridge) {
clear_bit(slot, slot_hotplug_enable);
}
}
/* Append Device object for each slot */
for (i = 0; i < PCI_SLOT_MAX; i++) {
bool can_eject = test_bit(i, slot_hotplug_enable);
bool present = test_bit(i, slot_device_present);
bool vga = test_bit(i, slot_device_vga);
bool qxl = test_bit(i, slot_device_qxl);
bool system = test_bit(i, slot_device_system);
if (can_eject) {
void *pcihp = acpi_data_push(bus_table,
ACPI_PCIHP_SIZEOF);
memcpy(pcihp, ACPI_PCIHP_AML, ACPI_PCIHP_SIZEOF);
patch_pcihp(i, pcihp);
bus_hotplug_support = true;
} else if (qxl) {
void *pcihp = acpi_data_push(bus_table,
ACPI_PCIQXL_SIZEOF);
memcpy(pcihp, ACPI_PCIQXL_AML, ACPI_PCIQXL_SIZEOF);
patch_pciqxl(i, pcihp);
} else if (vga) {
void *pcihp = acpi_data_push(bus_table,
ACPI_PCIVGA_SIZEOF);
memcpy(pcihp, ACPI_PCIVGA_AML, ACPI_PCIVGA_SIZEOF);
patch_pcivga(i, pcihp);
} else if (system) {
/* Nothing to do: system devices are in DSDT. */
} else if (present) {
void *pcihp = acpi_data_push(bus_table,
ACPI_PCINOHP_SIZEOF);
memcpy(pcihp, ACPI_PCINOHP_AML, ACPI_PCINOHP_SIZEOF);
patch_pcinohp(i, pcihp);
}
}
if (bsel) {
method = build_alloc_method("DVNT", 2);
for (i = 0; i < PCI_SLOT_MAX; i++) {
GArray *notify;
uint8_t op;
if (!test_bit(i, slot_hotplug_enable)) {
continue;
}
notify = build_alloc_array();
op = 0xA0; /* IfOp */
build_append_byte(notify, 0x7B); /* AndOp */
build_append_byte(notify, 0x68); /* Arg0Op */
build_append_int(notify, 0x1 << i);
build_append_byte(notify, 0x00); /* NullName */
build_append_byte(notify, 0x86); /* NotifyOp */
build_append_nameseg(notify, "S%.02X_", PCI_DEVFN(i, 0));
build_append_byte(notify, 0x69); /* Arg1Op */
/* Pack it up */
build_package(notify, op, 0);
build_append_array(method, notify);
build_free_array(notify);
}
build_append_and_cleanup_method(bus_table, method);
}
/* Append PCNT method to notify about events on local and child buses.
* Add unconditionally for root since DSDT expects it.
*/
if (bus_hotplug_support || child->notify_table->len || !bus->parent_dev) {
method = build_alloc_method("PCNT", 0);
/* If bus supports hotplug select it and notify about local events */
if (bsel) {
build_append_byte(method, 0x70); /* StoreOp */
build_append_int(method, qint_get_int(qobject_to_qint(bsel)));
build_append_nameseg(method, "BNUM");
build_append_nameseg(method, "DVNT");
build_append_nameseg(method, "PCIU");
build_append_int(method, 1); /* Device Check */
build_append_nameseg(method, "DVNT");
build_append_nameseg(method, "PCID");
build_append_int(method, 3); /* Eject Request */
}
/* Notify about child bus events in any case */
build_append_array(method, child->notify_table);
build_append_and_cleanup_method(bus_table, method);
/* Append description of child buses */
build_append_array(bus_table, child->device_table);
/* Pack it up */
if (bus->parent_dev) {
build_extop_package(bus_table, op);
} else {
build_package(bus_table, op, 0);
}
/* Append our bus description to parent table */
build_append_array(parent->device_table, bus_table);
/* Also tell parent how to notify us, invoking PCNT method.
* At the moment this is not needed for root as we have a single root.
*/
if (bus->parent_dev) {
build_append_byte(parent->notify_table, '^'); /* ParentPrefixChar */
build_append_byte(parent->notify_table, 0x2E); /* DualNamePrefix */
build_append_nameseg(parent->notify_table, "S%.02X_",
bus->parent_dev->devfn);
build_append_nameseg(parent->notify_table, "PCNT");
}
}
build_free_array(bus_table);
build_pci_bus_state_cleanup(child);
g_free(child);
}
