device_port.h   [plain text]


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/*
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/*
 */
/*
 *	Author: David B. Golub, Carnegie Mellon University
 *	Date:   8/89
 */

#ifndef _DEVICE_DEVICE_PORT_H_
#define _DEVICE_DEVICE_PORT_H_

#include <device/device_types.h>

/*
 *	Master privileged I/O object for this host
 */
extern mach_port_t      master_device_port;

#define DEVICE_PAGER_GUARDED            0x1
#define DEVICE_PAGER_COHERENT           0x2
#define DEVICE_PAGER_CACHE_INHIB        0x4
#define DEVICE_PAGER_WRITE_THROUGH      0x8
#define DEVICE_PAGER_CONTIGUOUS         0x100
#define DEVICE_PAGER_NOPHYSCACHE        0x200

#ifdef XNU_KERNEL_PRIVATE
#include <vm/memory_types.h>

_Static_assert(((DEVICE_PAGER_CONTIGUOUS | DEVICE_PAGER_NOPHYSCACHE) & VM_WIMG_MASK) == 0,
    "device pager flags overlap WIMG mask");

/* Assert on the backwards-compatible DEVICE_PAGER* values */
_Static_assert(DEVICE_PAGER_GUARDED == VM_MEM_GUARDED, "DEVICE_PAGER_GUARDED != VM_MEM_GUARDED");
_Static_assert(DEVICE_PAGER_COHERENT == VM_MEM_COHERENT, "DEVICE_PAGER_COHERENT != VM_MEM_COHERENT");
_Static_assert(DEVICE_PAGER_CACHE_INHIB == VM_MEM_NOT_CACHEABLE, "DEVICE_PAGER_CACHE_INHIB != VM_MEM_NOT_CACHEABLE");
_Static_assert(DEVICE_PAGER_WRITE_THROUGH == VM_MEM_WRITE_THROUGH, "DEVICE_PAGER_WRITE_THROUGH != VM_MEM_WRITE_THROUGH");

#endif /* KERNEL_PRIVATE */

#endif  /* _DEVICE_DEVICE_PORT_H_ */