#ifndef _ASM_POWERPC_DTL_H
#define _ASM_POWERPC_DTL_H

#include <asm/lppaca.h>
#include <linux/spinlock_types.h>

/*
 * Layout of entries in the hypervisor's dispatch trace log buffer.
 */
struct dtl_entry {
    u8    dispatch_reason;
    u8    preempt_reason;
    __be16    processor_id;
    __be32    enqueue_to_dispatch_time;
    __be32    ready_to_enqueue_time;
    __be32    waiting_to_ready_time;
    __be64    timebase;
    __be64    fault_addr;
    __be64    srr0;
    __be64    srr1;
};

#define DISPATCH_LOG_BYTES    4096    /* bytes per cpu */
#define N_DISPATCH_LOG        (DISPATCH_LOG_BYTES / sizeof(struct dtl_entry))

/*
 * Dispatch trace log event enable mask:
 *   0x1: voluntary virtual processor waits
 *   0x2: time-slice preempts
 *   0x4: virtual partition memory page faults
 */
#define DTL_LOG_CEDE        0x1
#define DTL_LOG_PREEMPT        0x2
#define DTL_LOG_FAULT        0x4
#define DTL_LOG_ALL        (DTL_LOG_CEDE | DTL_LOG_PREEMPT | DTL_LOG_FAULT)

extern struct kmem_cache *dtl_cache;
extern rwlock_t dtl_access_lock;

extern void register_dtl_buffer(int cpu);
extern void alloc_dtl_buffers(unsigned long *time_limit);
extern long hcall_vphn(unsigned long cpu, u64 flags, __be32 *associativity);

#endif /* _ASM_POWERPC_DTL_H */