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mailbox.h
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mailbox.h
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#ifndef BCE_MAILBOX_H
#define BCE_MAILBOX_H
#include <linux/completion.h>
#include <linux/pci.h>
#include <linux/timer.h>
struct bce_mailbox {
void __iomem *reg_mb;
atomic_t mb_status; // possible statuses: 0 (no msg), 1 (has active msg), 2 (got reply)
struct completion mb_completion;
uint64_t mb_result;
};
enum bce_message_type {
BCE_MB_REGISTER_COMMAND_SQ = 0x7, // to-device
BCE_MB_REGISTER_COMMAND_CQ = 0x8, // to-device
BCE_MB_REGISTER_COMMAND_QUEUE_REPLY = 0xB, // to-host
BCE_MB_SET_FW_PROTOCOL_VERSION = 0xC, // both
BCE_MB_SLEEP_NO_STATE = 0x14, // to-device
BCE_MB_RESTORE_NO_STATE = 0x15, // to-device
BCE_MB_SAVE_STATE_AND_SLEEP = 0x17, // to-device
BCE_MB_RESTORE_STATE_AND_WAKE = 0x18, // to-device
BCE_MB_SAVE_STATE_AND_SLEEP_FAILURE = 0x19, // from-device
BCE_MB_SAVE_RESTORE_STATE_COMPLETE = 0x1A, // from-device
};
#define BCE_MB_MSG(type, value) (((u64) (type) << 58) | ((value) & 0x3FFFFFFFFFFFFFFLL))
#define BCE_MB_TYPE(v) ((u32) (v >> 58))
#define BCE_MB_VALUE(v) (v & 0x3FFFFFFFFFFFFFFLL)
void bce_mailbox_init(struct bce_mailbox *mb, void __iomem *reg_mb);
int bce_mailbox_send(struct bce_mailbox *mb, u64 msg, u64* recv);
int bce_mailbox_handle_interrupt(struct bce_mailbox *mb);
struct bce_timestamp {
void __iomem *reg;
struct timer_list timer;
struct spinlock stop_sl;
bool stopped;
};
void bce_timestamp_init(struct bce_timestamp *ts, void __iomem *reg);
void bce_timestamp_start(struct bce_timestamp *ts, bool is_initial);
void bce_timestamp_stop(struct bce_timestamp *ts);
#endif //BCEDRIVER_MAILBOX_H