source: trunk/kernel/kernel_config.h @ 689

/*
 * kernel_config.h - global kernel configuration arguments
 * 
 * Authors        Alain Greiner (2016,2017,2018,2019,2020)
 *
 * Copyright (c)  UPMC Sorbonne Universites
 * 
 * This file is part of ALMOS-MKH.
 *
 * ALMOS-MKH is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2.0 of the License.
 *
 * ALMOS-MKH is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with ALMOS-MKH; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef _KERNEL_CONFIG_H_
#define _KERNEL_CONFIG_H_

////////////////////////////////////////////////////////////////////////////////////////
//                              KERNEL DEBUG
//
// 1) All errors detected by the kernel caused by a system call are reported to the
//    user process using the ERRNO mechanism. Moreover, the DEBUG_***_ERROR variables
//    force the compiler to display on TXT0 the error messages generated by
//    the low-level kernel function, to help the error cause analysis.
//
// 2) The other debug variable forece the compiler to display on TXT0 a trace for one
//    specific kernel function, or one small group of functions.
//    All these trace variables (but locks, kmem, kcm) respect the following rules: 
//    - the trace is generated if the debug variable is non zeo.
//    - trace is generated only when cycle > debug_value.
//    - detailed trace is enabled when (debug_value & 0x1) is non zero.
////////////////////////////////////////////////////////////////////////////////////////

// error reporting variables

#define DEBUG_DEV_NIC_ERROR               1
#define DEBUG_KCM_ERROR                   1
#define DEBUG_KMEM_ERROR                  1
#define DEBUG_MAPPER_ERROR                1
#define DEBUG_PPM_ERROR                   1
#define DEBUG_PROCESS_ERROR               1
#define DEBUG_SOCKET_ERROR                1
#define DEBUG_SYSCALLS_ERROR              1
#define DEBUG_THREAD_ERROR                1
#define DEBUG_USER_DIR_ERROR              1
#define DEBUG_VFS_ERROR                   1
#define DEBUG_VMM_ERROR                   1


// trace activation variables

#define DEBUG_BARRIER_CREATE              0
#define DEBUG_BARRIER_DESTROY             0
#define DEBUG_BARRIER_WAIT                0

#define DEBUG_BUSYLOCK_TYPE               0   // type 0 undefined => no debug
#define DEBUG_BUSYLOCK_PID                0   // owner process PID
#define DEBUG_BUSYLOCK_TRDID              0   // owner thread TRDID
                 
#define DEBUG_CHDEV_CMD_RX                0
#define DEBUG_CHDEV_CMD_TX                0
#define DEBUG_CHDEV_SERVER_RX             0
#define DEBUG_CHDEV_SERVER_TX             0

#define DEBUG_CLUSTER_INIT                0
#define DEBUG_CLUSTER_PID_ALLOC           0
#define DEBUG_CLUSTER_PID_RELEASE         0
#define DEBUG_CLUSTER_PROCESS_COPIES      0

#define DEBUG_DEV_TXT_RX                  0
#define DEBUG_DEV_TXT_TX                  0
#define DEBUG_DEV_IOC_RX                  0
#define DEBUG_DEV_IOC_TX                  0
#define DEBUG_DEV_NIC_RX                  0
#define DEBUG_DEV_NIC_TX                  0
#define DEBUG_DEV_FBF                     0
#define DEBUG_DEV_DMA                     0
#define DEBUG_DEV_MMC                     0
#define DEBUG_DEV_PIC                     0

#define DEBUG_DEVFS_GLOBAL_INIT           0 
#define DEBUG_DEVFS_LOCAL_INIT            0
#define DEBUG_DEVFS_MOVE                  0

#define DEBUG_ELF_LOAD                    0

#define DEBUG_DQDT_GET_ROOT               0
#define DEBUG_DQDT_INIT                   0
#define DEBUG_DQDT_SELECT_FOR_THREAD      0
#define DEBUG_DQDT_SELECT_FOR_MEMORY      0
#define DEBUG_DQDT_UPDATE_PAGES           0
#define DEBUG_DQDT_UPDATE_THREADS         0

#define DEBUG_FATFS_ADD_DENTRY            0
#define DEBUG_FATFS_CLUSTER_ALLOC         0
#define DEBUG_FATFS_CTX_INIT              0
#define DEBUG_FATFS_FREE_CLUSTERS         0
#define DEBUG_FATFS_GET_CLUSTER           0
#define DEBUG_FATFS_GET_USER_DIR          0
#define DEBUG_FATFS_MOVE_PAGE             0
#define DEBUG_FATFS_NEW_DENTRY            0
#define DEBUG_FATFS_RELEASE_INODE         0
#define DEBUG_FATFS_REMOVE_DENTRY         0
#define DEBUG_FATFS_SCAN_DIRECTORY        0
#define DEBUG_FATFS_SYNC_FAT              0
#define DEBUG_FATFS_SYNC_FSINFO           0
#define DEBUG_FATFS_SYNC_INODE            0
#define DEBUG_FATFS_UPDATE_DENTRY         0
#define DEBUG_FATFS_UPDATE_IOC            0

#define DEBUG_GRDXT_INSERT                0

#define DEBUG_HAL_CONTEXT_FORK            0
#define DEBUG_HAL_CONTEXT_INIT            0
#define DEBUG_HAL_EXCEPTIONS              0
#define DEBUG_HAL_FBF                     0
#define DEBUG_HAL_GPT_COPY                0
#define DEBUG_HAL_GPT_CREATE              0
#define DEBUG_HAL_GPT_DESTROY             0
#define DEBUG_HAL_GPT_LOCK_PTE            0
#define DEBUG_HAL_GPT_SET_COW             0
#define DEBUG_HAL_GPT_SET_PTE             0
#define DEBUG_HAL_IOC_RX                  0
#define DEBUG_HAL_IOC_TX                  0
#define DEBUG_HAL_IRQS                    0
#define DEBUG_HAL_KENTRY                  0
#define DEBUG_HAL_NIC_RX                  0
#define DEBUG_HAL_NIC_TX                  0
#define DEBUG_HAL_TXT_RX                  0
#define DEBUG_HAL_TXT_TX                  0
#define DEBUG_HAL_USPACE                  0
#define DEBUG_HAL_VMM                     0

#define DEBUG_KCM                         0
#define DEBUG_KCM_ORDER                   0    // filter for DEBUG_KCM
#define DEBUG_KCM_CXY                     0    // filter for DEBUG_KCM

#define DEBUG_KERNEL_INIT                 0

#define DEBUG_KMEM                        0
#define DEBUG_KMEM_ORDER                  0    // filter for DEBUG_KMEM
#define DEBUG_KMEM_CXY                    0    // filter for DEBUG_KMEM

#define DEBUG_MAPPER_GET_PAGE             0
#define DEBUG_MAPPER_GET_FAT_PAGE         0
#define DEBUG_MAPPER_HANDLE_MISS          0
#define DEBUG_MAPPER_MOVE_KERNEL          0
#define DEBUG_MAPPER_MOVE_USER            0
#define DEBUG_MAPPER_SYNC                 0

#define DEBUG_MUTEX                       0

#define DEBUG_PPM_ALLOC_PAGES             0
#define DEBUG_PPM_FREE_PAGES              0
   
#define DEBUG_PROCESS_COPY_INIT           0
#define DEBUG_PROCESS_DESTROY             0
#define DEBUG_PROCESS_FD_REGISTER         0
#define DEBUG_PROCESS_FD_REMOVE           0
#define DEBUG_PROCESS_FD_CLEAN_ALL        0
#define DEBUG_PROCESS_GET_LOCAL_COPY      0
#define DEBUG_PROCESS_INIT_CREATE         0
#define DEBUG_PROCESS_MAKE_EXEC           0
#define DEBUG_PROCESS_MAKE_FORK           0
#define DEBUG_PROCESS_REFERENCE_INIT      0
#define DEBUG_PROCESS_SIGACTION           0
#define DEBUG_PROCESS_TXT                 0
#define DEBUG_PROCESS_ZERO_CREATE         0

#define DEBUG_QUEUELOCK_TYPE              0   // type 0 undefined => no debug
#define DEBUG_QUEUELOCK_PTR               0   // lock local pointer
#define DEBUG_QUEUELOCK_CXY               0   // lock cluster identifier

#define DEBUG_RPC_CLIENT_GENERIC          0
#define DEBUG_RPC_SERVER_GENERIC          0

#define DEBUG_RPC_FBF_DISPLAY             0
#define DEBUG_RPC_PROCESS_MAKE_FORK       0
#define DEBUG_RPC_PROCESS_SIGACTION       0
#define DEBUG_RPC_THREAD_USER_CREATE      0
#define DEBUG_RPC_THREAD_KERNEL_CREATE    0
#define DEBUG_RPC_USER_DIR_CREATE         0
#define DEBUG_RPC_USER_DIR_DESTROY        0
#define DEBUG_RPC_VMM_CREATE_VSEG         0
#define DEBUG_RPC_VMM_RESIZE_VSEG         0
#define DEBUG_RPC_VMM_REMOVE_VSEG         0
#define DEBUG_RPC_VMM_SET_COW             0

#define DEBUG_RWLOCK_TYPE                 0   // type 0 undefined => no debug
#define DEBUG_RWLOCK_PTR                  0   // lock local pointer
#define DEBUG_RWLOCK_CXY                  0   // lock cluster identifier

#define DEBUG_SCHED_HANDLE_SIGNALS        0
#define DEBUG_SCHED_YIELD                 0
#define DEBUG_SCHED_RPC_ACTIVATE          0

#define DEBUG_SEM                         0

#define DEBUG_SOCKET_ACCEPT               0
#define DEBUG_SOCKET_ALARM                0
#define DEBUG_SOCKET_BIND                 0
#define DEBUG_SOCKET_BUILD                0
#define DEBUG_SOCKET_CLOSE                0
#define DEBUG_SOCKET_CONNECT              0
#define DEBUG_SOCKET_CREATE               0
#define DEBUG_SOCKET_DESTROY              0
#define DEBUG_SOCKET_LISTEN               0
#define DEBUG_SOCKET_SEND                 0
#define DEBUG_SOCKET_RECV                 0
#define DEBUG_SOCKET_LINK                 0

#define DEBUG_SYS_BARRIER                 0
#define DEBUG_SYS_CLOSE                   0
#define DEBUG_SYS_CLOSEDIR                0
#define DEBUG_SYS_CONDVAR                 0
#define DEBUG_SYS_DISPLAY                 0
#define DEBUG_SYS_EXEC                    0
#define DEBUG_SYS_EXIT                    0
#define DEBUG_SYS_FBF                     0
#define DEBUG_SYS_FG                      0
#define DEBUG_SYS_FORK                    0
#define DEBUG_SYS_GET                     0  
#define DEBUG_SYS_GETCWD                  0
#define DEBUG_SYS_GETPID                  0
#define DEBUG_SYS_ISATTY                  0
#define DEBUG_SYS_IS_FG                   0
#define DEBUG_SYS_KILL                    0
#define DEBUG_SYS_LSEEK                   0
#define DEBUG_SYS_MKDIR                   0
#define DEBUG_SYS_MMAP                    0
#define DEBUG_SYS_MUNMAP                  0
#define DEBUG_SYS_MUTEX                   0
#define DEBUG_SYS_OPEN                    0
#define DEBUG_SYS_OPENDIR                 0
#define DEBUG_SYS_READ                    0
#define DEBUG_SYS_READDIR                 0
#define DEBUG_SYS_SEM                     0
#define DEBUG_SYS_SOCKET                  0
#define DEBUG_SYS_STAT                    0
#define DEBUG_SYS_THREAD_CANCEL           0
#define DEBUG_SYS_THREAD_CREATE           0
#define DEBUG_SYS_THREAD_EXIT             0
#define DEBUG_SYS_THREAD_JOIN             0
#define DEBUG_SYS_THREAD_SLEEP            0
#define DEBUG_SYS_THREAD_WAKEUP           0
#define DEBUG_SYS_THREAD_YIELD            0
#define DEBUG_SYS_TRACE                   0
#define DEBUG_SYS_UNLINK                  0
#define DEBUG_SYS_WAIT                    0
#define DEBUG_SYS_WRITE                   0

#define DEBUG_THREAD_BLOCK                0
#define DEBUG_THREAD_DELETE               0
#define DEBUG_THREAD_DESTROY              0
#define DEBUG_THREAD_GET_XPTR             0
#define DEBUG_THREAD_IDLE                 0
#define DEBUG_THREAD_INIT                 0
#define DEBUG_THREAD_KERNEL_CREATE        0
#define DEBUG_THREAD_USER_CREATE          0
#define DEBUG_THREAD_USER_FORK            0
#define DEBUG_THREAD_USER_EXEC            0

#define DEBUG_USER_DIR_CREATE             0
#define DEBUG_USER_DIR_DESTROY            0

#define DEBUG_VFS_ADD_CHILD               0
#define DEBUG_VFS_ADD_SPECIAL             0
#define DEBUG_VFS_CHDIR                   0
#define DEBUG_VFS_CLOSE                   0
#define DEBUG_VFS_DENTRY_CREATE           0
#define DEBUG_VFS_FILE_CREATE             0
#define DEBUG_VFS_FILE_DESTROY            0
#define DEBUG_VFS_GET_PATH                0
#define DEBUG_VFS_INODE_CREATE            0
#define DEBUG_VFS_INODE_LOAD_ALL          0
#define DEBUG_VFS_KERNEL_MOVE             0
#define DEBUG_VFS_LINK                    0
#define DEBUG_VFS_LOOKUP                  0
#define DEBUG_VFS_LSEEK                   0
#define DEBUG_VFS_MKDIR                   0
#define DEBUG_VFS_NEW_DENTRY_INIT         0
#define DEBUG_VFS_OPEN                    0
#define DEBUG_VFS_OPENDIR                 0
#define DEBUG_VFS_REMOVE_CHILD            0
#define DEBUG_VFS_STAT                    0
#define DEBUG_VFS_USER_MOVE               0
#define DEBUG_VFS_UNLINK                  0


#define DEBUG_VMM_CREATE_VSEG             0
#define DEBUG_VMM_DESTROY                 0
#define DEBUG_VMM_FORK_COPY               0
#define DEBUG_VMM_GET_ONE_PPN             0
#define DEBUG_VMM_GET_PTE                 0
#define DEBUG_VMM_GLOBAL_DELETE_VSEG      0
#define DEBUG_VMM_GLOBAL_RESIZE_VSEG      0
#define DEBUG_VMM_HANDLE_PAGE_FAULT       0
#define DEBUG_VMM_HANDLE_COW              0
#define DEBUG_VMM_MMAP                    0
#define DEBUG_VMM_PAGE_ALLOCATE           0
#define DEBUG_VMM_REMOVE_VSEG             0
#define DEBUG_VMM_RESIZE_VSEG             0
#define DEBUG_VMM_SET_COW                 0
#define DEBUG_VMM_UPDATE_PTE              0
#define DEBUG_VMM_USER_INIT               0
#define DEBUG_VMM_USER_RESET              0

#define DEBUG_XHTAB                       0


////////////////////////////////////////////////////////////////////////////////////////////
//                KERNEL LOCKS TYPES MNEMONICS (for debug)
// It must be kept consistent with the lock_name[] array defined in kernel_init.c file.
////////////////////////////////////////////////////////////////////////////////////////////

#define LOCK_CLUSTER_KCM       1   // local  (B)  protect dynamic KCM creation in cluster
#define LOCK_SCHED_STATE       2   // local  (B)  protect scheduler state for given core
#define LOCK_VMM_STACK         3   // local  (B)  protect VMM stack vseg allocator   
#define LOCK_VMM_MMAP          4   // local  (B)  protect VMM mmap vseg allocator
#define LOCK_KCM_STATE         5   // local  (B)  protect KCM allocator state
#define LOCK_KHM_STATE         6   // local  (B)  protect KHM allocator state
#define LOCK_HTAB_STATE        7   // local  (B)  protect a local htab state
#define LOCK_CORE_ALARMS       8   // local  (B)  protect list of alarms in core desc.

#define LOCK_VFS_CTX           9   // remote (B)  protect vfs context state
#define LOCK_PPM_FREE         10   // remote (B)  protect PPM allocator free_pages lists
#define LOCK_THREAD_JOIN      11   // remote (B)  protect join/exit between two threads
#define LOCK_XHTAB_STATE      12   // remote (B)  protect a distributed xhtab state
#define LOCK_CHDEV_QUEUE      13   // remote (B)  protect chdev threads waiting queue
#define LOCK_CHDEV_TXT0       14   // remote (B)  protect access to kernel terminal TXT0
#define LOCK_CHDEV_TXTLIST    15   // remote (B)  protect xlist of processes using same TXT
#define LOCK_PAGE_STATE       16   // remote (B)  protect physical page descriptor state
#define LOCK_MUTEX_STATE      17   // remote (B)  protect user mutex state
#define LOCK_CONDVAR_STATE    18   // remote (B)  protect user condvar state
#define LOCK_SEM_STATE        19   // remote (B)  protect user semaphore state
#define LOCK_PROCESS_CWD      20   // remote (B)  protect current working directory in process
#define LOCK_BARRIER_STATE    21   // remote (B)  protect user barrier state
#define LOCK_LISTEN_SOCKET    22   // remote (B)  protect xlist of listening sockets

#define LOCK_CLUSTER_PREFTBL  23   // local  (Q)  protect array of ref. processes in cluster

#define LOCK_SOCKET_STATE     24   // remote (Q)  protect kernel socket state
#define LOCK_PPM_DIRTY        25   // remote (Q)  protect PPM dirty_pages list
#define LOCK_CLUSTER_LOCALS   26   // remote (Q)  protect xlist of local processes in cluster
#define LOCK_CLUSTER_COPIES   27   // remote (Q)  protect xlist of process copies in cluster
#define LOCK_PROCESS_CHILDREN 28   // remote (Q)  protect xlist of chidren process in process
#define LOCK_PROCESS_USERSYNC 29   // remote (Q)  protect lists of user synchros in process
#define LOCK_PROCESS_FDARRAY  30   // remote (Q)  protect array of open files in owner process
#define LOCK_PROCESS_DIR      31   // remote (Q)  protect xlist of open directories in process
#define LOCK_VMM_VSL          32   // remote (Q)  protect VSL (local list of vsegs)

#define LOCK_PROCESS_THTBL    33   // local  (RW) protect local array of threads in a process 

#define LOCK_MAPPER_STATE     34   // remote (RW) protect mapper state
#define LOCK_VFS_SIZE         35   // remote (RW) protect inode state and associated mapper
#define LOCK_VFS_FILE         36   // remote (RW) protect file descriptor state
#define LOCK_VFS_MAIN         37   // remote (RW) protect vfs traversal (in root inode)
#define LOCK_FATFS_FAT        38   // remote (RW) protect exclusive access to the VFS FAT
#define LOCK_FBF_WINDOWS      39   // remote (RW) protect FBF windows set

////////////////////////////////////////////////////////////////////////////////////////////
//                          GENERAL CONFIGURATION     
////////////////////////////////////////////////////////////////////////////////////////////

#define CONFIG_VERSION           "Version 2.4 / November 2020"

////////////////////////////////////////////////////////////////////////////////////////////
//                          HARDWARE CONFIGURATION     
////////////////////////////////////////////////////////////////////////////////////////////

#define CONFIG_KERNEL_IDENTITY_MAP          true       // True for 32 bits cores             
#define CONFIG_MAX_CLUSTERS_X               16         // max number of clusters in row
#define CONFIG_MAX_CLUSTERS_Y               16         // max number of clusters in column
#define CONFIG_MAX_CLUSTERS                 (CONFIG_MAX_CLUSTERS_X * CONFIG_MAX_CLUSTERS_Y) 
#define CONFIG_MAX_LOCAL_CORES              4          // max number of cores per cluster
#define CONFIG_MAX_INT_DEV                  4          // max number of internal peripherals
#define CONFIG_MAX_EXT_DEV                  8          // max number of external peripherals
#define CONFIG_MAX_INTERNAL_IRQS            32         // max number of internal IRQs
#define CONFIG_MAX_EXTERNAL_IRQS            32         // max number of external IRQs
#define CONFIG_IRQS_PER_CORE                4          // number of input IRQs per core
#define CONFIG_CLUSTER_SPAN                 32         // ln(phys. address space per cluster)
#define CONFIG_CACHE_LINE_SIZE              64         // number of bytes in cache line
#define CONFIG_CACHE_LINE_ORDER             6          // ln( cache line size )

#define CONFIG_CACHE_LINE_ALIGNED           __attribute__((aligned(CONFIG_CACHE_LINE_SIZE)))

#define CONFIG_MAX_IOC_CHANNELS             1          // max number of IOC device channels
#define CONFIG_MAX_FBF_CHANNELS             1          // max number of FBF device channels
#define CONFIG_MAX_TXT_CHANNELS             8          // max number of TXT device channels
#define CONFIG_MAX_DMA_CHANNELS             4          // max number of DMA device channels
#define CONFIG_MAX_NIC_CHANNELS             4          // max number of NIC device channels

#define CONFIG_TXT_ECHO_MODE                1          // echo mode for TXT peripheral
#define CONFIG_TXT_KBUF_SIZE                512        // kernel buffer for TXT write

#define CONFIG_FBF_WIDTH                    128
#define CONFIG_FBF_HEIGHT                   128

#define CONFIG_CPU_CTX_SIZE                 256        // up to 64 uint32_t registers
#define CONFIG_FPU_CTX_SIZE                 256        // up to 32 uint64_t registers

////////////////////////////////////////////////////////////////////////////////////////////
//                                  DQDT        
////////////////////////////////////////////////////////////////////////////////////////////

#define CONFIG_DQDT_LEVELS_NR               5

////////////////////////////////////////////////////////////////////////////////////////////
//                              FBF WINDOWS       
////////////////////////////////////////////////////////////////////////////////////////////

#define CONFIG_FBF_WINDOWS_MAX_NR           64         // max number of windows
#define CONFIG_FBF_WINDOWS_MAX_WIDTH        1024       // max number of pixels in FBF line
#define CONFIG_FBF_WINDOWS_MAX_HEIGHT       1024       // max number of lines in FBF

////////////////////////////////////////////////////////////////////////////////////////////
//                            PROCESS MANAGEMENT       
////////////////////////////////////////////////////////////////////////////////////////////

#define CONFIG_PROCESS_INIT_PATH            "/bin/user/init.elf"
#define CONFIG_MAX_PROCESS_PER_CLUSTER      16         // max number of owned process
#define CONFIG_PROCESS_ARGS_MAX_NR          4          // max number of args per process 
#define CONFIG_PROCESS_ENVS_MAX_NR          256        // max number of envs per process
#define CONFIG_PROCESS_FILE_MAX_NR          256        // max number of files per process
#define CONFIG_PROCESS_MAX_CHILDREN         1024       // max number of children process
#define CONFIG_PROCESS_HEAP_MIN_SIZE        0x00010000 // user heap min size (bytes)
#define CONFIG_PROCESS_HEAP_MAX_SIZE        0x30000000 // user heap max size (bytes)
#define CONFIG_PROCESS_DISPLAY_BUF_SIZE     128        // display one process on one line 

////////////////////////////////////////////////////////////////////////////////////////////
//                          PHYSICAL MEMORY MANAGEMENT         
////////////////////////////////////////////////////////////////////////////////////////////

#define CONFIG_PPM_PAGE_SIZE          4096          // physical page size (bytes)
#define CONFIG_PPM_PAGE_ORDER         12            // ln(physical page size)
#define CONFIG_PPM_PAGE_MASK          0x00000FFF    // physical page mask     
#define CONFIG_PPM_MAX_ORDER          16            // ln(total number of pages per cluster)
#define CONFIG_PPM_MAX_RSVD           32            // max reserved zones on the machine

#define CONFIG_PPM_PAGE_ALIGNED       __attribute__((aligned(CONFIG_PPM_PAGE_SIZE)))

////////////////////////////////////////////////////////////////////////////////////////////
//                              RANDOM NUMBERS 
////////////////////////////////////////////////////////////////////////////////////////////

#define CONFIG_RDNG_PARAM_A                 65519
#define CONFIG_RDNG_PARAM_C                 64037

////////////////////////////////////////////////////////////////////////////////////////////
//                             REMOTE PROCEDURE CALL
////////////////////////////////////////////////////////////////////////////////////////////

#define CONFIG_RPC_FIFO_SLOTS                   16
#define CONFIG_RPC_FIFO_MAX_ITERATIONS      1024
#define CONFIG_RPC_THREADS_MAX              4       // max number of RPC threads per core

////////////////////////////////////////////////////////////////////////////////////////////
//                                SCHEDULING 
////////////////////////////////////////////////////////////////////////////////////////////

#define CONFIG_SCHED_TICKS_PER_SECOND       1        // number of TICKS per seconds   
#define CONFIG_SCHED_TICKS_PER_QUANTUM      1        // number of ticks between scheduling
#define CONFIG_SCHED_MAX_THREADS_NR         32       // max number of threads per core
#define CONFIG_SCHED_IDLE_MODE_SLEEP        0        // idle thread use sleep mode if non 0

////////////////////////////////////////////////////////////////////////////////////////////
//                                TCP/UDP/IP 
////////////////////////////////////////////////////////////////////////////////////////////

#define CONFIG_SOCK_ISS_CLIENT        0x10000      // initial sequence number for TCP client
#define CONFIG_SOCK_ISS_SERVER        0x20000      // initial sequence number for TCP server
#define CONFIG_SOCK_MAX_WINDOW        0xFFFFF      // initial window (bytes) for TCP
#define CONFIG_SOCK_RETRY_TIMEOUT     1000000      // number of cycles before retry for TCP
#define CONFIG_SOCK_QUEUES_DEPTH      4            // max number of packets in RX/TX queues 
#define CONFIG_SOCK_RX_BUF_ORDER      20           // ln( number of bytes in socket rx_buf )
#define CONFIG_SOCK_TX_BUF_ORDER      20           // ln( number of bytes in socket tx_buf )
#define CONFIG_SOCK_R2T_BUF_SIZE      8            // max number of requests in R2T queue 
#define CONFIG_SOCK_CRQ_BUF_SIZE      8            // max number of requests in CRQ queue
#define CONFIG_SOCK_PKT_BUF_SIZE      2048         // max length for one ETH/IP/TCP packet
#define CONFIG_SOCK_PAYLOAD_MAX       1500         // max user payload length for packet

////////////////////////////////////////////////////////////////////////////////////////////
//                                 THREADS 
////////////////////////////////////////////////////////////////////////////////////////////

#define CONFIG_THREADS_MAX_PER_CLUSTER      32       // max threads per cluster per process
#define CONFIG_THREAD_DESC_SIZE             0x4000   // thread desc size (with kernel stack)
#define CONFIG_THREAD_DESC_ORDER            14       // ln( number of bytes )

////////////////////////////////////////////////////////////////////////////////////////////
//                            VIRTUAL FILE SYSTEM        
////////////////////////////////////////////////////////////////////////////////////////////

#define CONFIG_VFS_ROOT_CXY                 0          // VFS_ROOT and FAT mapper cluster

#define CONFIG_VFS_MAX_INODES               128        // max number of inodes per cluster
#define CONFIG_VFS_MAX_NAME_LENGTH          56         // dentry name max length (bytes)
#define CONFIG_VFS_MAX_PATH_LENGTH          256        // pathname max length (bytes)
#define CONFIG_VFS_FREE_CLUSTERS_MIN        32         // min number of free clusters
#define CONFIG_VFS_MAX_DENTRIES             63         // max number of dentries in one dir

#define CONFIG_VFS_ROOT_IS_FATFS            1          // root FS is FATFS if non zero
#define CONFIG_VFS_ROOT_IS_EX2FS            0          // root FS is EX2FS if non zero

#define CONFIG_MAPPER_GRDXT_W1              6          // number of bits for RADIX_TREE_IX1
#define CONFIG_MAPPER_GRDXT_W2              7          // number of bits for RADIX_TREE_IX2
#define CONFIG_MAPPER_GRDXT_W3              7          // number of bits for RADIX_TREE_IX3

////////////////////////////////////////////////////////////////////////////////////////////
//       32 bits  USER SPACE SEGMENTATION / all bases and sizes are numbers of pages
////////////////////////////////////////////////////////////////////////////////////////////

#define CONFIG_VMM_VSPACE_SIZE        0x100000      // virtual space          : 4   Gbytes

#define CONFIG_VMM_UTILS_BASE         0x000200      // UTILS zone base        : 2   Mbytes
#define CONFIG_VMM_ELF_BASE           0x000400      // ELF zone base          : 4   Mbytes
#define CONFIG_VMM_HEAP_BASE          0x040000      // HEAP zone base         : 32  Mbytes
#define CONFIG_VMM_STACK_BASE         0x0C0000      // STACK zone base        : 3   Gbytes
 
#define CONFIG_VMM_ARGS_SIZE          0x000001      // args vseg size         : 4   Kbytes
#define CONFIG_VMM_ENVS_SIZE          0x000004      // envs vseg size         : 16  Kbytes
#define CONFIG_VMM_STACK_SIZE         0x000100      // single stack vseg size : 1   Mbytes

#define CONFIG_VMM_HEAP_MAX_ORDER     18            // max size of MMAP vseg  : 1   Gbytes

////////////////////////////////////////////////////////////////////////////////////////////
//                  MISCELANEOUS BUFFER SIZES  
////////////////////////////////////////////////////////////////////////////////////////////

#define CONFIG_PRINTK_BUF_SIZE        0x800        // max length of a formated string
#define CONFIG_PIPE_BUF_SIZE          0x1000       // max number of bytes in a pipe buffer

////////////////////////////////////////////////////////////////////////////////////////////
//                 INSTRUMENTATION
////////////////////////////////////////////////////////////////////////////////////////////

#define CONFIG_INSTRUMENTATION_SYSCALLS    0
#define CONFIG_INSTRUMENTATION_PGFAULTS    0
#define CONFIG_INSTRUMENTATION_FOOTPRINT   1
#define CONFIG_INSTRUMENTATION_CHDEVS      0
#define CONFIG_INSTRUMENTATION_GPT         0




#endif  /* _KERNEL_CONFIG_H_ */