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Kernel: PCIDevice stores its vendor id and device id

This commit is contained in:
Bananymous 2023-10-16 01:39:14 +03:00
parent 29db8d0d40
commit 73b9c28457
2 changed files with 14 additions and 0 deletions
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5
kernel/include/kernel/PCI.h
View File

@ -75,6 +75,9 @@ namespace Kernel::PCI
uint8_t header_type() const { return m_header_type; }
uint16_t vendor_id() const { return m_vendor_id; }
uint16_t device_id() const { return m_device_id; }
BAN::ErrorOr<uint8_t> get_irq();
BAN::ErrorOr<BAN::UniqPtr<BarRegion>> allocate_bar_region(uint8_t bar_num);
@ -107,6 +110,8 @@ namespace Kernel::PCI
uint8_t m_prog_if;
uint8_t m_header_type;
uint16_t m_vendor_id;
uint16_t m_device_id;
BAN::Optional<uint8_t> m_offset_msi;
BAN::Optional<uint8_t> m_offset_msi_x;

9
kernel/kernel/PCI.cpp
View File

@ -337,6 +337,15 @@ namespace Kernel::PCI
m_prog_if = read_byte(0x09);
m_header_type = read_byte(0x0E);
uint32_t device = read_dword(0x00);
m_vendor_id = device & 0xFFFF;
m_device_id = device >> 16;
dprintln("PCI {2H}:{2H}.{2H} has {2H}.{2H}.{2H}",
m_bus, m_dev, m_func,
m_class_code, m_subclass, m_prog_if
);
enumerate_capabilites();
}