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Kernel: Add config read/write api to PCI

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This commit is contained in:
Bananymous
2023-09-18 21:39:09 +03:00
parent dd0b8c4140
commit 58506c5bd1
2 changed files with 66 additions and 13 deletions
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10
kernel/include/kernel/PCI.h
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@@ -58,6 +58,8 @@ namespace Kernel::PCI
uint8_t read_byte(uint8_t) const;
void write_dword(uint8_t, uint32_t);
void write_word(uint8_t, uint16_t);
void write_byte(uint8_t, uint8_t);
uint8_t bus() const { return m_bus; }
uint8_t dev() const { return m_dev; }
@@ -109,6 +111,14 @@ namespace Kernel::PCI
const BAN::Vector<PCI::Device>& devices() const { return m_devices; }
static uint32_t read_config_dword(uint8_t bus, uint8_t dev, uint8_t func, uint8_t offset);
static uint16_t read_config_word(uint8_t bus, uint8_t dev, uint8_t func, uint8_t offset);
static uint8_t read_config_byte(uint8_t bus, uint8_t dev, uint8_t func, uint8_t offset);
static void write_config_dword(uint8_t bus, uint8_t dev, uint8_t func, uint8_t offset, uint32_t value);
static void write_config_word(uint8_t bus, uint8_t dev, uint8_t func, uint8_t offset, uint16_t value);
static void write_config_byte(uint8_t bus, uint8_t dev, uint8_t func, uint8_t offset, uint8_t value);
private:
PCIManager() = default;
void check_function(uint8_t bus, uint8_t dev, uint8_t func);