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Kernel: Allow to reboot in ACPI via PCI or MMIO access

Browse source 
Also, we determine if ACPI reboot is supported by checking the FADT
flags' field.
This commit is contained in:
Liav A 2020-03-08 16:50:46 +02:00 • committed by Andreas Kling
parent 8639ee2640
commit 0f45a1b5e7
9 changed files with 183 additions and 25 deletions
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19
Kernel/PCI/Access.cpp
View file

@ -107,11 +107,30 @@ void PCI::Access::disable_bus_mastering(Address address)
}
namespace PCI {
void enumerate_all(Function<void(Address, ID)> callback)
{
PCI::Access::the().enumerate_all(callback);
}
void raw_access(Address address, u32 field, size_t access_size, u32 value)
{
ASSERT(access_size != 0);
if (access_size == 1) {
PCI::Access::the().write8_field(address, field, value);
return;
}
if (access_size == 2) {
PCI::Access::the().write16_field(address, field, value);
return;
}
if (access_size == 4) {
PCI::Access::the().write32_field(address, field, value);
return;
}
ASSERT_NOT_REACHED();
}
ID get_id(Address address)
{
return PCI::Access::the().get_id(address);

8
Kernel/PCI/Access.h
View file

@ -85,16 +85,16 @@ public:
virtual uint8_t get_segment_end_bus(u32 segment) = 0;
virtual String get_access_type() = 0;
virtual void write8_field(Address address, u32 field, u8 value) = 0;
virtual void write16_field(Address address, u32 field, u16 value) = 0;
virtual void write32_field(Address address, u32 field, u32 value) = 0;
protected:
Access();
virtual u8 read8_field(Address address, u32 field) = 0;
virtual u16 read16_field(Address address, u32 field) = 0;
virtual u32 read32_field(Address address, u32 field) = 0;
virtual void write8_field(Address address, u32 field, u8 value) = 0;
virtual void write16_field(Address address, u32 field, u16 value) = 0;
virtual void write32_field(Address address, u32 field, u32 value) = 0;
};
}

1
Kernel/PCI/Definitions.h
View file

@ -174,6 +174,7 @@ namespace PCI {
void enable_interrupt_line(Address);
void disable_interrupt_line(Address);
u8 get_interrupt_line(Address);
void raw_access(Address, u32, size_t, u32);
u32 get_BAR0(Address);
u32 get_BAR1(Address);
u32 get_BAR2(Address);

8
Kernel/PCI/IOAccess.h
View file

@ -37,6 +37,10 @@ public:
virtual String get_access_type() override final { return "IO-Access"; };
virtual uint32_t get_segments_count() { return 1; };
virtual void write8_field(Address address, u32, u8) override final;
virtual void write16_field(Address address, u32, u16) override final;
virtual void write32_field(Address address, u32, u32) override final;
protected:
IOAccess();
@ -44,13 +48,9 @@ private:
virtual u8 read8_field(Address address, u32) override final;
virtual u16 read16_field(Address address, u32) override final;
virtual u32 read32_field(Address address, u32) override final;
virtual void write8_field(Address address, u32, u8) override final;
virtual void write16_field(Address address, u32, u16) override final;
virtual void write32_field(Address address, u32, u32) override final;
virtual uint8_t get_segment_start_bus(u32) { return 0x0; };
virtual uint8_t get_segment_end_bus(u32) { return 0xFF; };
};
}

7
Kernel/PCI/MMIOAccess.h
View file

@ -45,6 +45,10 @@ public:
virtual String get_access_type() override final { return "MMIO-Access"; };
virtual u32 get_segments_count();
virtual void write8_field(Address address, u32, u8) override final;
virtual void write16_field(Address address, u32, u16) override final;
virtual void write32_field(Address address, u32, u32) override final;
protected:
explicit MMIOAccess(PhysicalAddress mcfg);
@ -52,9 +56,6 @@ private:
virtual u8 read8_field(Address address, u32) override final;
virtual u16 read16_field(Address address, u32) override final;
virtual u32 read32_field(Address address, u32) override final;
virtual void write8_field(Address address, u32, u8) override final;
virtual void write16_field(Address address, u32, u16) override final;
virtual void write32_field(Address address, u32, u32) override final;
void map_device(Address address);
virtual u8 get_segment_start_bus(u32);