lib/src/pfndef.h

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#ifndef pfndef_h
#define pfndef_h

#include <shm_iddef.h>

#define PMAP_C_LENGTH 8

#define PLNK_C_LENGTH 8

#define         PFN_M_PAGTYP            0x7
#define         PFN_M_LOC               0xF0
#define         PFN_M_BUFOBJ            0x100
#define         PFN_M_COLLISION         0x200
#define         PFN_M_BADPAG            0x400
#define         PFN_M_RPTEVT            0x800
#define         PFN_M_DELCON            0x1000
#define         PFN_M_MODIFY            0x2000
#define         PFN_M_UNAVAILABLE       0x4000
#define         PFN_M_SWPPAG_VALID      0x8000
#define         PFN_M_TOP_LEVEL_PT      0x10000
#define         PFN_M_SLOT              0x20000
#define         PFN_M_SHARED            0x40000
#define         PFN_M_ZEROED            0x80000
#define         PFN_S_INDEX_WIDTH       48
#define         PFN_M_TYP0              0x10000
#define         PFN_M_PARTIAL_SECTION   0x80000
#define         PFN_M_GBLBAK            0x80000000
#define         PFN_M_STX               0xFFFF00000000
#define         PFN_M_CRF               0x1000000000000
#define         PFN_M_DZRO              0x2000000000000
#define         PFN_M_WRT               0x4000000000000
#define         PFN_M_STX_HIBIT         0x8000000000000
#define         PFN_M_PGFLPAG           0xFFFFFF00000000
#define         PFN_M_PGFLX             0xFF00000000000000
#define         PFN_M_BAKX              0xFFFFFFFF00000000
#define         PFN_M_GPTX              0xFFFFFFFF00000000
#define         PFN_C_ENTRY_SIZE        40
#define         PFN_C_FREPAGLST         0
#define         PFN_C_MFYPAGLST         1
#define         PFN_C_BADPAGLST         2
#define         PFN_C_RELPEND           3
#define         PFN_C_UNTESTED          3
#define         PFN_C_RDERR             4
#define         PFN_C_WRTINPROG         5
#define         PFN_C_RDINPROG          6
#define         PFN_C_ZERO_LIST         7
#define         PFN_C_PRVPFN            8
#define         PFN_C_ACTIVE            15
#define         PFN_C_PROCESS           0
#define         PFN_C_SYSTEM            1
#define         PFN_C_GLOBAL            2
#define         PFN_C_GBLWRT            3
#define         PFN_C_PPGTBL            4
#define         PFN_C_GPGTBL            5
#define         PFN_C_RESERVED          6
#define         PFN_C_UNKNOWN           7
#define         PFN_C_PFNLST            1
#define         PFN_C_SHM_REG           3
#define         PFN_S_PFNDEF            40

#define PRVPFN_K_LENGTH 40
#define PRVPFN_C_LENGTH 40

struct _pmap {
  unsigned int pmap_l_start_pfn;      
  unsigned int pmap_l_pfn_count;      
};

struct _plnk {
  union  {
    unsigned long long plnk_q_pfn_list_link;
    struct  {
      unsigned int plnk_l_next_pfn; 
      unsigned int plnk_l_pfn_count; 
    };
  };
};

#ifdef CONFIG_MM_VMS
#define _pfn page
typedef struct page {
#else
struct _pfn {
#endif
  union  {
    struct _plnk pfn_r_shm_list_link;
    struct _shm_id pfn_r_shm_reg_id;        
    struct  {
      union  {
        unsigned int pfn_l_flink; 
        unsigned int pfn_l_shrcnt; 
      };
      union  {
        unsigned int pfn_l_blink; 
        unsigned int pfn_l_wslx_qw; 
        unsigned int pfn_l_gbl_lck_cnt; 
      };
    };
  };
  union  {
    unsigned int pfn_l_page_state;  
    struct  {
      unsigned pfn_v_pagtyp             : 3;  
      unsigned pfndef_$_fill_1          : 1; 
      unsigned pfn_v_loc                : 4;     
      unsigned pfn_v_bufobj             : 1;  
      unsigned pfn_v_collision          : 1; 
      unsigned pfn_v_badpag             : 1;  
      unsigned pfn_v_rptevt             : 1;  
      unsigned pfn_v_delcon             : 1;  
      unsigned pfn_v_modify             : 1;  
      unsigned pfn_v_unavailable        : 1; 
      unsigned pfn_v_swppag_valid       : 1; 
      unsigned pfn_v_top_level_pt       : 1; 
      unsigned pfn_v_slot               : 1;    
      unsigned pfn_v_shared             : 1;  
      unsigned pfn_v_zeroed             : 1;  
      unsigned pfndef_$_fill_3          : 12; 
    };
  };
  union  {
    unsigned int pfn_l_pt_pfn;      
    unsigned int pfn_l_shm_cpp_id;  
  };
  union  {
    unsigned long long pfn_q_pte_index; 
    struct  {
      int pfn_l_refcnt_fill1;
      //      short int pfn_w_refcnt_fill2;
      union {
        unsigned long npfn_l_refcnt; // was w_, changed because of atomic stuff
        atomic_t ncount;                        /* Usage count, see below. */
      };
    };
  };
  union { // temp workaround
    unsigned long pfn_l_refcnt; // was w_, changed because of atomic stuff
    atomic_t count;                     /* Usage count, see below. */
  };
  union  {
    unsigned long long pfn_q_bak;     
    struct _phd *pfn_l_phd;         
    struct  {
      unsigned int pfn_l_color_flink; 
      unsigned int pfn_l_color_blink; 
    };
    struct  {
      unsigned pfn_v_fill_5             : 16;
      unsigned pfn_v_typ0               : 1;    
      unsigned pfn_v_fill_6             : 2;
      unsigned pfn_v_partial_section    : 1; 
      unsigned pfn_v_fill_7             : 11;
      unsigned pfn_v_gblbak             : 1;  
    };
    struct  {
      unsigned pfn_v_fill_13            : 32;
      unsigned pfn_v_stx                : 16;    
      unsigned pfn_v_crf                : 1;     
      unsigned pfn_v_dzro               : 1;    
      unsigned pfn_v_wrt                : 1;     
      unsigned pfn_v_stx_hibit          : 1;
      unsigned pfn_v_fill_0_            : 4;
    };
    struct  {
      unsigned pfn_v_fill_9             : 32;
      unsigned pfn_v_pgflpag            : 24; 
      unsigned pfn_v_pgflx              : 8;   
    };
    struct  {
      unsigned pfn_v_fill_11            : 32;
      unsigned pfn_v_bakx               : 32;   
    };
    struct  {
      unsigned pfn_v_fill_12            : 32;
      unsigned pfn_v_gptx               : 32;   
    };
    unsigned long long pfn_q_bak_prvpfn; 
  };
  union  {
    unsigned short int pfn_w_swppag; 
    unsigned short int pfn_w_bo_refc; 
    unsigned short int pfn_w_io_sts;
  };
  unsigned short int pfn_w_pt_val_cnt;
  unsigned short int pfn_w_pt_lck_cnt;
  unsigned short int pfn_w_pt_win_cnt;

  struct list_head list;        /* for slab */  /* ->mapping has some page lists. */
#if 0
  struct address_space *mapping;        /* The inode (or ...) we belong to. */
  unsigned long index;          /* Our offset within mapping. */
#endif
  /*struct page *next_hash;*/           /* Next page sharing our hash bucket in
                                           the pagecache hash table. */
  // count is moved up
  //    atomic_t count; ->pfn_l_refcnt          /* Usage count, see below. */
  /*    unsigned long flags;    */      /* atomic flags, some possibly
                                           updated asynchronously */
  /*struct list_head lru*/;             /* Pageout list, eg. active_list;
                                           protected by pagemap_lru_lock !! */
  /*    wait_queue_head_t wait; */      /* Page locked?  Stand in line... */
  /*struct page **pprev_hash;*/ /* Complement to *next_hash. */
  /* struct buffer_head * buffers; */   /* Buffer maps us to a disk block. */
  // keep virtual for now; need it for some time for mmg_allocontig_align
  /*    void *virtual;*/                        /* Kernel virtual address (NULL if
                                           not kmapped, ie. highmem) */
  //struct zone_struct *zone;   /* Memory zone we are in. */
#ifdef CONFIG_MM_VMS
} mem_map_t;
#else
};
#endif
        
struct _prvpfn {
  struct _prvpfn *prvpfn_l_sqfl;      
  struct _prvpfn *prvpfn_l_sqbl;      
  unsigned short int prvpfn_w_size;   
  unsigned char prvpfn_b_type;        
  unsigned char prvpfn_b_subtype;     
  unsigned int prvpfn_l_count;        
  unsigned int prvpfn_l_head;         
  unsigned int prvpfn_l_tail;         
  unsigned int prvpfn_l_reclaimable;  
  unsigned int prvpfn_l_reclaimed;    
  int prvpfn_l_priority;              
  void (*prvpfn_a_callback)();        
};

typedef struct _pfn * PFN_PQ;
typedef struct _pfn ** PFN_PPQ;
typedef struct _prvpfn * PRVPFN_PQ;
typedef struct _prvpfn ** PRVPFN_PPQ;
typedef struct _pmap * PMAP_PQ;
typedef struct _pmap ** PMAP_PPQ;
typedef struct _plnk * PLNK_PQ;
 
#endif 
 

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