// Pure driver-library helpers for walking PCI capability lists.

#pragma once

#include <stdint.h>
#include <ntlite/status.h>

typedef struct NTL_PCI_CONFIG_READER {
    void* Context;
    uint32_t (*Read32)(void* context, uint16_t offset);
} NTL_PCI_CONFIG_READER;

#ifdef __cplusplus
extern "C" {
#endif

// Finds an ordinary PCI capability using an explicitly supplied config reader.
// Returns NOT_FOUND for a valid exhausted list and DEVICE_ERROR for malformed lists.
KSTATUS NtlPciFindCapability(const NTL_PCI_CONFIG_READER* reader,
                             uint8_t firstOffset,
                             uint8_t capabilityId,
                             uint8_t* outOffset);

#ifdef __cplusplus
}
#endif