include/minix/config.h

   1 #ifndef _CONFIG_H
   2 #define _CONFIG_H
   3
   4 /* Minix release and version numbers. */
   5 #define OS_RELEASE "3"
   6 #define OS_VERSION "2.1"
   7
   8 /* This file sets configuration parameters for the MINIX kernel, FS, and PM.
   9  * It is divided up into two main sections.  The first section contains
  10  * user-settable parameters.  In the second section, various internal system
  11  * parameters are set based on the user-settable parameters.
  12  *
  13  * Parts of config.h have been moved to sys_config.h, which can be included
  14  * by other include files that wish to get at the configuration data, but
  15  * don't want to pollute the users namespace. Some editable values have
  16  * gone there.
  17  *
  18  */
  19
  20 #include <minix/sys_config.h>
  21
  22 /* Number of slots in the process table for non-kernel processes. The number
  23  * of system processes defines how many processes with special privileges
  24  * there can be. User processes share the same properties and count for one.
  25  *
  26  * These can be changed in sys_config.h.
  27  */
  28 #define NR_PROCS          _NR_PROCS
  29 #define NR_SYS_PROCS      _NR_SYS_PROCS
  30 #define NR_SYS_CHUNKS     BITMAP_CHUNKS(NR_SYS_PROCS)
  31
  32 /* Number of controller tasks (/dev/cN device classes). */
  33 #define NR_CTRLRS          2
  34
  35 /* DMA_SECTORS may be increased to speed up DMA based drivers. */
  36 #define DMA_SECTORS        1    /* DMA buffer size (must be >= 1) */
  37
  38 /* Which processes should receive diagnostics from the kernel and system?
  39  * Directly sending it to TTY only displays the output. Sending it to the
  40  * log driver will cause the diagnostics to be buffered and displayed.
  41  * Messages are sent by src/lib/sysutil/kputc.c to these processes, in
  42  * the order of this array, which must be terminated by NONE. This is used
  43  * by drivers and servers that printf().
  44  * The kernel does this for its own kprintf() in kernel/utility.c, also using
  45  * this array, but a slightly different mechanism.
  46  */
  47 #define OUTPUT_PROCS_ARRAY      { TTY_PROC_NR, LOG_PROC_NR, NONE }
  48
  49 /* NR_CONS, NR_RS_LINES, and NR_PTYS determine the number of terminals the
  50  * system can handle.
  51  */
  52 #define NR_CONS            4    /* # system consoles (1 to 8) */
  53 #define NR_RS_LINES        4    /* # rs232 terminals (0 to 4) */
  54 #define NR_PTYS            32   /* # pseudo terminals (0 to 64) */
  55
  56 /* This feature enable the counting of system calls in PM and FS */
  57 #define ENABLE_SYSCALL_STATS    0
  58
  59 /* Max. number of I/O ranges that can be assigned to a process */
  60 #define NR_IO_RANGE     64
  61
  62 /* Max. number of device memory ranges that can be assigned to a process */
  63 #define NR_MEM_RANGE    20
  64
  65 /* Max. number of IRQs that can be assigned to a process */
  66 #define NR_IRQ  8
  67
  68 /* Scheduling priorities. Values must start at zero (highest
  69  * priority) and increment.
  70  */
  71 #define NR_SCHED_QUEUES   16    /* MUST equal minimum priority + 1 */
  72 #define TASK_Q             0    /* highest, used for kernel tasks */
  73 #define MAX_USER_Q         0    /* highest priority for user processes */
  74 #define USER_Q            ((MIN_USER_Q - MAX_USER_Q) / 2 + MAX_USER_Q) /* default
  75                                                 (should correspond to nice 0) */
  76 #define MIN_USER_Q        (NR_SCHED_QUEUES - 1) /* minimum priority for user
  77                                                    processes */
  78 /* default scheduling quanta */
  79 #define USER_QUANTUM 200
  80
  81 /* defualt user process cpu */
  82 #define USER_DEFAULT_CPU        -1 /* use the default cpu or do not change the
  83                                       current one */
  84
  85 /*===========================================================================*
  86  *      There are no user-settable parameters after this line                *
  87  *===========================================================================*/
  88 /* Set the FP_FORMAT type based on the machine selected, either hw or sw    */
  89 #define FP_NONE  _FP_NONE       /* no floating point support                */
  90 #define FP_IEEE  _FP_IEEE       /* conform IEEE floating point standard     */
  91
  92 /* _MINIX_FP_FORMAT is defined in sys_config.h. */
  93 #define FP_FORMAT       _MINIX_FP_FORMAT
  94
  95 /* _ASKDEV and _FASTLOAD are defined in sys_config.h. */
  96 #define ASKDEV _ASKDEV
  97 #define FASTLOAD _FASTLOAD
  98
  99 /* Enable or disable system profiling. */
 100 #define SPROFILE          0    /* statistical profiling */
 101 #define CPROFILE          0    /* call profiling */
 102
 103 /* PCI configuration parameters */
 104 #define NR_PCIBUS 40
 105 #define NR_PCIDEV 50
 106
 107 #endif /* _CONFIG_H */