74711a3b14
enforced. If a call is denied, this will be kprinted. Please report any such errors, so that I can adjust the mask before returning errors instead of warnings. Wrote CMOS driver. All CMOS code from FS has been removed. Currently the driver only supports get time calls. Set time is left out as an exercise for the book readers ... startup scripts were updated because the CMOS driver is needed early on. (IS got same treatment.) Don't forget to run MAKEDEV cmos in /dev/, otherwise the driver cannot be loaded.
82 lines
2.9 KiB
C
Executable file
82 lines
2.9 KiB
C
Executable file
/* General macros and constants used by the kernel. */
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#ifndef CONST_H
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#define CONST_H
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#include <ibm/interrupt.h> /* interrupt numbers and hardware vectors */
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#include <ibm/ports.h> /* port addresses and magic numbers */
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#include <ibm/bios.h> /* BIOS addresses, sizes and magic numbers */
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#include <ibm/cpu.h> /* BIOS addresses, sizes and magic numbers */
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#include <minix/config.h>
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#include "config.h"
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/* To translate an address in kernel space to a physical address. This is
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* the same as umap_local(proc_ptr, D, vir, sizeof(*vir)), but less costly.
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*/
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#define vir2phys(vir) (kinfo.data_base + (vir_bytes) (vir))
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/* Map a process number to a privilege structure id. */
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#define s_nr_to_id(n) (NR_TASKS + (n) + 1)
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/* Translate a pointer to a field in a structure to a pointer to the structure
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* itself. So it translates '&struct_ptr->field' back to 'struct_ptr'.
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*/
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#define structof(type, field, ptr) \
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((type *) (((char *) (ptr)) - offsetof(type, field)))
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/* Constants used in virtual_copy(). Values must be 0 and 1, respectively. */
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#define _SRC_ 0
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#define _DST_ 1
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/* Number of random sources */
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#define RANDOM_SOURCES 16
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/* Constants and macros for bit map manipulation. */
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#define BITCHUNK_BITS (sizeof(bitchunk_t) * CHAR_BIT)
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#define BITMAP_CHUNKS(nr_bits) (((nr_bits)+BITCHUNK_BITS-1)/BITCHUNK_BITS)
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#define MAP_CHUNK(map,bit) (map)[((bit)/BITCHUNK_BITS)]
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#define CHUNK_OFFSET(bit) ((bit)%BITCHUNK_BITS))
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#define GET_BIT(map,bit) ( MAP_CHUNK(map,bit) & (1 << CHUNK_OFFSET(bit) )
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#define SET_BIT(map,bit) ( MAP_CHUNK(map,bit) |= (1 << CHUNK_OFFSET(bit) )
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#define UNSET_BIT(map,bit) ( MAP_CHUNK(map,bit) &= ~(1 << CHUNK_OFFSET(bit) )
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#define get_sys_bit(map,bit) \
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( MAP_CHUNK(map.chunk,bit) & (1 << CHUNK_OFFSET(bit) )
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#define set_sys_bit(map,bit) \
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( MAP_CHUNK(map.chunk,bit) |= (1 << CHUNK_OFFSET(bit) )
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#define unset_sys_bit(map,bit) \
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( MAP_CHUNK(map.chunk,bit) &= ~(1 << CHUNK_OFFSET(bit) )
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#define NR_SYS_CHUNKS BITMAP_CHUNKS(NR_SYS_PROCS)
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#if (CHIP == INTEL)
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/* Program stack words and masks. */
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#define INIT_PSW 0x0200 /* initial psw */
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#define INIT_TASK_PSW 0x1200 /* initial psw for tasks (with IOPL 1) */
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#define TRACEBIT 0x0100 /* OR this with psw in proc[] for tracing */
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#define SETPSW(rp, new) /* permits only certain bits to be set */ \
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((rp)->p_reg.psw = (rp)->p_reg.psw & ~0xCD5 | (new) & 0xCD5)
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#define IF_MASK 0x00000200
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#define IOPL_MASK 0x003000
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/* Disable/ enable hardware interrupts. The parameters of lock() and unlock()
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* are used when debugging is enabled. See debug.h for more information.
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*/
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#define lock(c, v) intr_disable();
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#define unlock(c) intr_enable();
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/* Sizes of memory tables. The boot monitor distinguishes three memory areas,
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* namely low mem below 1M, 1M-16M, and mem after 16M. More chunks are needed
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* for DOS MINIX.
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*/
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#define NR_MEMS 8
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#endif /* (CHIP == INTEL) */
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#if (CHIP == M68000)
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/* M68000 specific constants go here. */
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#endif /* (CHIP == M68000) */
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#endif /* CONST_H */
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