LCOM1920-T02G10

#ifndef _MINIX_CONST_H

#define _MINIX_CONST_H

#include <machine/archconst.h>

/* The UNUSED annotation tells the compiler or lint not to complain

 * about an unused variable or function parameter.

 *

 * A number of different annotations are used, depending on the

 * compiler or checker that is looking at the code.

 *

 * Note that some variants rename the parameter, so if you use

 * the parameter after all, you'll get a complaint about a missing

 * variable.

 *

 * You use it like this:

 *

 *   void foo(int UNUSED(x)){}

 */

#ifndef UNUSED

#if defined _lint

# define UNUSED(v) /*lint -e(715,818)*/ v

#elif defined(__GNUC__)

# define UNUSED(v) UNUSED_ ## v __attribute((unused))

#elif defined __LCLINT__

# define UNUSED(v) /*@unused@*/ v

#else

# define UNUSED(v) _UNUSED_ ## v

#endif

#endif

#ifndef _MINIX_MAGIC

#define __ALIGNED(X) __aligned(X)

#else

#define __ALIGNED(X)

#endif

#define EXTERN        extern        /* used in *.h files */

#define TRUE               1        /* used for turning integers into Booleans */

#define FALSE              0        /* used for turning integers into Booleans */

#define SUPER_USER ((uid_t) 0)        /* uid_t of superuser */

#include <sys/null.h>      /* NULL Pointer */

#define SCPVEC_NR          64        /* max # of entries in a SYS_VSAFECOPY request */

#define MAPVEC_NR          64        /* max # of entries in a SYS_VUMAP request */

#define NR_IOREQS          64        /* maximum number of entries in an iorequest */

#define VUA_READ        0x01        /* for SYS_VUMAP: read access */

#define VUA_WRITE        0x02        /* for SYS_VUMAP: write access */

/* Message passing constants. */

#define MESS_SIZE (sizeof(message))        /* might need usizeof from FS here */

/* Memory related constants. */

#define SEGMENT_TYPE  0xFF00        /* bit mask to get segment type */

#define SEGMENT_INDEX 0x00FF        /* bit mask to get segment index */

#define PHYS_SEG      0x0400        /* flag indicating entire physical memory */

#define LOCAL_VM_SEG  0x1000        /* same as LOCAL_SEG, but with vm lookup */

#define MEM_GRANT        3

#define VIR_ADDR        1

#define VM_D                (LOCAL_VM_SEG | VIR_ADDR)

#define VM_GRANT        (LOCAL_VM_SEG | MEM_GRANT)

/* Labels used to disable code sections for different reasons. */

#define DEAD_CODE           0        /* unused code in normal configuration */

#define FUTURE_CODE           0        /* new code to be activated + tested later */

#define TEMP_CODE           1        /* active code to be removed later */

/* Miscellaneous */

#define BYTE            0377        /* mask for 8 bits */

#define READING            0        /* copy data to user */

#define WRITING            1        /* copy data from user */

#define PEEKING            2        /* retrieve FS data without copying */

#define HAVE_SCATTERED_IO  1        /* scattered I/O is now standard */

/* Memory is allocated in clicks. */

#if defined(__i386__) || defined(__arm__)

#define CLICK_SIZE      4096        /* unit in which memory is allocated */

#define CLICK_SHIFT       12        /* log2 of CLICK_SIZE */

#else

#error Unsupported arch

#endif

/* Click alignment macros. */

#define CLICK_FLOOR(n)  (((vir_bytes)(n) / CLICK_SIZE) * CLICK_SIZE)

#define CLICK_CEIL(n)   CLICK_FLOOR((vir_bytes)(n) + CLICK_SIZE-1)

/* Sizes of memory tables. The boot monitor distinguishes three memory areas,

 * namely low mem below 1M, 1M-16M, and mem after 16M. More chunks are needed

 * for DOS MINIX.

*/

#define NR_MEMS            16

#define CLICK2ABS(v) ((v) << CLICK_SHIFT)

#define ABS2CLICK(a) ((a) >> CLICK_SHIFT)

/* Flag bits for i_mode in the inode. */

#define I_TYPE          0170000        /* this field gives inode type */

#define I_UNIX_SOCKET        0140000 /* unix domain socket */

#define I_SYMBOLIC_LINK 0120000        /* file is a symbolic link */

#define I_REGULAR       0100000        /* regular file, not dir or special */

#define I_BLOCK_SPECIAL 0060000        /* block special file */

#define I_DIRECTORY     0040000        /* file is a directory */

#define I_CHAR_SPECIAL  0020000        /* character special file */

#define I_NAMED_PIPE    0010000        /* named pipe (FIFO) */

#define I_SET_UID_BIT   0004000        /* set effective uid_t on exec */

#define I_SET_GID_BIT   0002000        /* set effective gid_t on exec */

#define I_SET_STCKY_BIT 0001000        /* sticky bit */ 

#define ALL_MODES       0007777        /* all bits for user, group and others */

#define RWX_MODES       0000777        /* mode bits for RWX only */

#define R_BIT           0000004        /* Rwx protection bit */

#define W_BIT           0000002        /* rWx protection bit */

#define X_BIT           0000001        /* rwX protection bit */

#define I_NOT_ALLOC     0000000        /* this inode is free */

/* Some limits. */

#define MAX_INODE_NR ((ino_t) 037777777777)        /* largest inode number */

#define MAX_FILE_POS ((off_t) 0x7FFFFFFF)        /* largest legal file offset */

#define UMAX_FILE_POS ((unsigned) 0x7FFFFFFF)        /* largest legal file offset */

#define MAX_SYM_LOOPS        8        /* how many symbolic links are recursed */

#define NO_BLOCK              ((block_t) 0)        /* absence of a block number */

#define NO_ENTRY                ((ino_t) 0)        /* absence of a dir entry */

#define NO_ZONE                ((zone_t) 0)        /* absence of a zone number */

#define NO_DEV                  ((dev_t) 0)        /* absence of a device numb */

#define NO_LINK                      ((nlink_t) 0)        /* absence of incoming links */

#define INVAL_UID               ((uid_t) -1)        /* invalid uid value */

#define INVAL_GID               ((gid_t) -1)        /* invalid gid value */

#define SERVARNAME                "cttyline"

#define ARCHVARNAME                "arch"

#define BOARDVARNAME                "board"

#define SERBAUDVARNAME                "cttybaud"

/* Bits for s_flags in the privilege structure. */

#define PREEMPTIBLE     0x002   /* kernel tasks are not preemptible */

#define BILLABLE        0x004   /* some processes are not billable */

#define DYN_PRIV_ID     0x008   /* privilege id assigned dynamically */

#define SYS_PROC        0x010   /* system processes have own priv structure */

#define CHECK_IO_PORT   0x020   /* check if I/O request is allowed */

#define CHECK_IRQ       0x040   /* check if IRQ can be used */

#define CHECK_MEM       0x080   /* check if (VM) mem map request is allowed */

#define ROOT_SYS_PROC   0x100   /* this is a root system process instance */

#define VM_SYS_PROC     0x200   /* this is a vm system process instance */

#define LU_SYS_PROC     0x400   /* this is a live updated sys proc instance */

#define RST_SYS_PROC    0x800   /* this is a restarted sys proc instance */

/* Values for the "verbose" boot monitor variable */

#define VERBOSEBOOT_QUIET 0

#define VERBOSEBOOT_BASIC 1

#define VERBOSEBOOT_EXTRA 2

#define VERBOSEBOOT_MAX   3

#define VERBOSEBOOTVARNAME "verbose"

/* magic value to put in struct proc entries for sanity checks. */

#define PMAGIC 0xC0FFEE1

/* MINIX_KERNFLAGS flags */

#define MKF_I386_INTEL_SYSENTER        (1L << 0) /* SYSENTER available and supported */

#define MKF_I386_AMD_SYSCALL        (1L << 1) /* SYSCALL available and supported */

/*

 * Number of per-CPU states for which time will be accounted.  This *must* be

 * the same value as NetBSD's CPUSTATES, which is defined in a rather

 * unfortunate location (sys/sched.h).  If the NetBSD value changes, our kernel

 * must be adapted accordingly.

 */

#define MINIX_CPUSTATES        5

/* Network device driver constants.  TODO: move to a better location. */

#define NDEV_ETH_PACKET_MIN        60        /* min network packet size, in bytes */

#define NDEV_ETH_PACKET_MAX        1514        /* max network packet size, in bytes */

#define NDEV_ETH_PACKET_TAG        4        /* ethernet VLAN tag size, in bytes */

#define NDEV_ETH_PACKET_CRC        4        /* ethernet CRC size, in bytes */

#define NDEV_ETH_PACKET_MAX_TAGGED (NDEV_ETH_PACKET_MAX + NDEV_ETH_PACKET_TAG)

#endif /* _MINIX_CONST_H */