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 $Id: vmm.h 232 2016-01-24 01:47:12Z reddawg $

 *****************************************************************************************/

#ifndef _VMM_H_
#define _VMM_H_

#include <sys/types.h>
#include <vmm/paging.h>

#define memAvail     1
#define memNotavail  2
#define vmmID       -3

/*
 #define vmmMemoryMapAddr 0xE6667000
 #define VMM_MMAP_ADDR_PMODE2 0xE6667000
 */

#define VMM_MMAP_ADDR_PMODE  VMM_KERN_START /* (PD_BASE_ADDR + PAGE_SIZE) */
#define VMM_MMAP_ADDR_RMODE  0x101000

#define VMM_KERN_END   0xFFFFFFFF
#define VMM_KERN_START 0xC0800000

#define VMM_USER_END   0xBFFFFFFF
#define VMM_USER_START 0x00000000

struct freebsd6_mmap_args {
    char addr_l_[PADL_( caddr_t )];
    caddr_t addr;
    char addr_r_[PADR_( caddr_t )];

    char len_l_[PADL_( size_t )];
    size_t len;
    char len_r_[PADR_( size_t )];

    char prot_l_[PADL_(int)];
    int prot;char prot_r_[PADR_(int)];
    char flags_l_[PADL_(int)];

    int flags;char flags_r_[PADR_(int)];
    char fd_l_[PADL_(int)];
    int fd;char fd_r_[PADR_(int)];

    char pad_l_[PADL_(int)];
    int pad;
    char pad_r_[PADR_(int)];

    char pos_l_[PADL_( off_t )];
    off_t pos;
    char pos_r_[PADR_( off_t )];
};

typedef struct {
    u_int32_t pageAddr;
    u_int16_t status;
    u_int16_t reserved;
    pid_t pid;
    int cowCounter;
} mMap;

extern int numPages;
extern mMap *vmmMemoryMap;

int vmm_init();
int vmmMemMapInit();
int countMemory();
u_int32_t vmmFindFreePage( pidType pid );
int freePage( uInt32 pageAddr );
int adjustCowCounter( uInt32 baseAddr, int adjustment );
void vmmFreeProcessPages( pidType pid );

//MrOlsen (2016-01-14) NOTE: Doing BSD Compat
//int freebsd6_mmap(struct thread *td, struct freebsd6_mmap_args *uap);

#endif