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acpi_drv: report IOAPIC devices

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genodelabs/genode#5066
This commit is contained in:
Johannes Schlatow 2024-03-20 13:45:59 +01:00 committed by Christian Helmuth
parent ce70b44087
commit f85068e1f2
1 changed files with 73 additions and 12 deletions
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85
repos/os/src/driver/acpi/acpi.cc
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@ -42,13 +42,11 @@ static const bool verbose = false;
*/
struct Apic_struct
{
enum Types { SRC_OVERRIDE = 2 };
enum Types { IOAPIC = 1, SRC_OVERRIDE = 2 };
uint8_t type;
uint8_t length;
bool is_override() { return type == SRC_OVERRIDE; }
Apic_struct *next() { return reinterpret_cast<Apic_struct *>((uint8_t *)this + length); }
} __attribute__((packed));
@ -75,6 +73,15 @@ struct Apic_override : Apic_struct
uint16_t flags;
} __attribute__((packed));
/* ACPI spec 5.2.12.3 */
struct Apic_ioapic : Apic_struct
{
uint8_t id;
uint8_t reserved;
uint32_t addr;
uint32_t base_irq;
} __attribute__((packed));
struct Dmar_struct_header;
/* ACPI spec 5.2.6 */
@ -169,6 +176,7 @@ struct Device_scope : Genode::Mmio<0x6>
struct Type : Register<0x0, 8> { enum { PCI_END_POINT = 0x1 }; };
struct Length : Register<0x1, 8> { };
struct Id : Register<0x4, 8> { };
struct Bus : Register<0x5, 8> { };
struct Path : Genode::Mmio<0x2>
@ -406,6 +414,34 @@ class Irq_override : public List<Irq_override>::Element
};
/**
* List that holds IOAPIC information
*/
class Ioapic : public List<Ioapic>::Element
{
private:
uint8_t _id; /* I/O APIC id */
uint32_t _addr; /* physical address */
uint32_t _base_irq; /* base irq number */
public:
Ioapic(uint8_t id, uint32_t addr, uint32_t base)
: _id(id), _addr(addr), _base_irq(base) { }
static List<Ioapic> *list()
{
static List<Ioapic> _list;
return &_list;
}
uint8_t id() const { return _id; }
uint32_t addr() const { return _addr; }
uint32_t base_irq() const { return _base_irq; }
};
/**
* List that holds the result of the mcfg table parsing which are pointers
* to the extended pci config space - 4k for each device.
@ -611,22 +647,37 @@ class Table_wrapper
bool is_dmar() { return _cmp("DMAR"); }
/**
* Parse override structures
* Parse MADT/APIC table
*/
void parse_madt(Genode::Allocator &alloc)
{
Apic_struct *apic = _table->apic_struct();
for (; apic < _table->end(); apic = apic->next()) {
if (!apic->is_override())
continue;
Apic_override *o;
Apic_ioapic *ioapic;
Apic_override *o = static_cast<Apic_override *>(apic);
Genode::log("MADT IRQ ", o->irq, " -> GSI ", (unsigned)o->gsi, " "
"flags: ", (unsigned)o->flags);
Irq_override::list()->insert(new (&alloc)
switch (apic->type) {
case Apic_struct::Types::SRC_OVERRIDE:
o = static_cast<Apic_override *>(apic);
Genode::log("MADT IRQ ", o->irq, " -> GSI ", (unsigned)o->gsi, " "
"flags: ", (unsigned)o->flags);
Irq_override::list()->insert(new (&alloc)
Irq_override(o->irq, o->gsi, o->flags));
break;
case Apic_struct::Types::IOAPIC:
ioapic = static_cast<Apic_ioapic *>(apic);
Ioapic::list()->insert(new (&alloc)
Ioapic(ioapic->id, ioapic->addr, ioapic->base_irq));
break;
default:
break;
}
}
}
@ -1672,11 +1723,21 @@ void Acpi::generate_report(Genode::Env &env, Genode::Allocator &alloc,
});
}
for (Ioapic *i = Ioapic::list()->first(); i; i = i->next())
{
xml.node("ioapic", [&] () {
xml.attribute("id", i->id());
xml.attribute("base_irq", i->base_irq());
attribute_hex(xml, "addr", i->addr());
});
}
/* lambda definition for scope evaluation in rmrr */
auto func_scope = [&] (Device_scope const &scope)
{
xml.node("scope", [&] () {
xml.attribute("bus_start", scope.read<Device_scope::Bus>());
xml.attribute("id", scope.read<Device_scope::Id>());
xml.attribute("type", scope.read<Device_scope::Type>());
scope.for_each_path([&](auto const &path) {