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[denali] Get Ahci device address from yellowstone.

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This commit is contained in:
Drew Galbraith 2023-06-26 17:01:59 -07:00
parent 02e6b49d90
commit 16dd675828
11 changed files with 125 additions and 52 deletions
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36
sys/yellowstone/hw/pcie.h
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@ -1,3 +1,37 @@
#pragma once
void DumpPciEDevices();
#include <stdint.h>
struct PciDeviceHeader {
uint16_t vendor_id;
uint16_t device_id;
uint16_t command_reg;
uint16_t status_reg;
uint8_t revision;
uint8_t prog_interface;
uint8_t subclass;
uint8_t class_code;
uint8_t cache_line_size;
uint8_t latency_timer;
uint8_t header_type;
uint8_t bist;
} __attribute__((packed));
class PciReader {
public:
PciReader();
uint64_t GetAhciPhysical();
private:
PciDeviceHeader* header_;
// FIXME: Don't hardcode this (It is available from ACPI).
uint64_t phys_mem_offset_ = 0xB000'0000;
uint64_t achi_device_offset_ = 0;
void PciDump(uint64_t vaddr);
void BusDump(uint64_t base, uint64_t bus);
void DeviceDump(uint64_t base, uint64_t bus, uint64_t dev);
void FunctionDump(uint64_t base, uint64_t bus, uint64_t dev, uint64_t fun);
};