/* IBM_PROLOG_BEGIN_TAG                                                   */
/* This is an automatically generated prolog.                             */
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/* $Source: src/include/kernel/syscalls.H $                               */
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/* OpenPOWER HostBoot Project                                             */
/*                                                                        */
/* Contributors Listed Below - COPYRIGHT 2010,2019                        */
/* [+] International Business Machines Corp.                              */
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/* Licensed under the Apache License, Version 2.0 (the "License");        */
/* you may not use this file except in compliance with the License.       */
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/* IBM_PROLOG_END_TAG                                                     */
/** @file syscalls.H
 *  @brief Defines all the system call IDs to be shared between the kernel and
 *         the system libc.
 */

#ifndef __KERNEL_SYSCALLS_H
#define __KERNEL_SYSCALLS_H

namespace Systemcalls
{
    /** @enum SysCalls
     *  @brief List of normal system calls and their IDs.
     *
     *  These are passed by userspace code via r3 when the sc instruction is
     *  executed.  The kernel performs a case statement to switch to the
     *  appropriate system call handler.
     *
     *  @note TASK_MIGRATE_TO_MASTER value must be kept in sync with start.S.
     *  @note TASK_END value must be kept in sync with start.S.
     */
    enum SysCalls
    {
            /** task_yield() */
        TASK_YIELD = 0,
            /** task_create() */
        TASK_START = 1,
            /** task_end() */
        TASK_END = 2,
            /** task_affinity_migrate_to_master() */
        TASK_MIGRATE_TO_MASTER = 3,
            /** task_wait() / task_wait_tid() */
        TASK_WAIT,

            /** msgq_create() */
        MSGQ_CREATE,
            /** msgq_destroy() */
        MSGQ_DESTROY,
            /** VFS internal */
        MSGQ_REGISTER_ROOT,
            /** VFS internal */
        MSGQ_RESOLVE_ROOT,

            /** msg_send() */
        MSG_SEND,
            /** msg_sendrecv() */
        MSG_SENDRECV,
            /** msg_respond() */
        MSG_RESPOND,
            /** msg_wait() */
        MSG_WAIT,
            /** dev_map() */
        DEV_MAP,
            /** dev_unmap() */
        DEV_UNMAP,

            /** nanosleep() */
        TIME_NANOSLEEP,

            /** futex_wake() futex_wait() futex_requeue() */
        SYS_FUTEX,

            /** shutdown() */
        MISC_SHUTDOWN,
            /** cpu_core_type() */
        MISC_CPUCORETYPE,
            /** cpu_dd_level() */
        MISC_CPUDDLEVEL,
            /** cpu_start_core() */
        MISC_CPUSTARTCORE,
            /** cpu_spr_value() */
        MISC_CPUSPRVALUE,
            /** cpu_spr_set() */
        MISC_CPUSPRSET,
            /** cpu_nap() - Hidden syscall */
        MISC_CPUNAP,
            /** cpu_master_winkle() */
        MISC_CPUWINKLE,
            /** cpu_wakeup_core() */
        MISC_CPUWAKEUPCORE,

            /** mm_alloc_block() */
        MM_ALLOC_BLOCK,
            /** mm_remove_pages() */
        MM_REMOVE_PAGES,

           /** mm_set_permission() */
        MM_SET_PERMISSION,

           /** mm_alloc_pages() */
        MM_ALLOC_PAGES,

           /** mm_virt_to_phys() */
        MM_VIRT_TO_PHYS,

            /** mm_extend() */
        MM_EXTEND,

            /** mm_linear_map() */
        MM_LINEAR_MAP,

            /** critassert() */
        MISC_CRITASSERT,

            /** set_mchk_data() */
        MISC_SETMCHKDATA,

            /** updateRemoteIpcAddr() */
        UPDATE_REMOTE_IPC_ADDR,

            /** qryLocalIpcInfo() */
        QRY_LOCAL_IPC_INFO,

        SYSCALL_MAX
    };

    /** @enum SysCalls_FastPath
     *  @brief List of fast-path system calls and their IDs.
     *
     *  @note If any of these change, their handling in start.S must also be
     *        updated.  The ASM code relies on these values.
     */
    enum SysCalls_FastPath
    {
            /** mmio_hmer_read() */
        MMIO_HMER_READ = 0x0800,
            /** mmio_hmer_write() */
        MMIO_HMER_WRITE = 0x0801,
            /** mmio_scratch_read() */
        MMIO_SCRATCH_READ = 0x0802,
            /** mmio_scratch_write() */
        MMIO_SCRATCH_WRITE = 0x0803,
            /** mmio_pvr_read() */
        MMIO_PVR_READ = 0x0804,

        SYSCALL_FASTPATH_MAX
    };
};
#endif