include/asm-ia64/sn/sn1/hwcntrs.h

   1 /*
   2  *
   3  * This file is subject to the terms and conditions of the GNU General Public
   4  * License.  See the file "COPYING" in the main directory of this archive
   5  * for more details.
   6  *
   7  * Copyright (C) 1992 - 1997, 2000-2001 Silicon Graphics, Inc. All rights reserved.
   8  */
   9 #ifndef _ASM_IA64_SN_SN1_HWCNTRS_H
  10 #define _ASM_IA64_SN_SN1_HWCNTRS_H
  11
  12
  13 typedef  uint64_t refcnt_t;
  14
  15 #define SN0_REFCNT_MAX_COUNTERS 64
  16
  17 typedef struct sn0_refcnt_set {
  18         refcnt_t    refcnt[SN0_REFCNT_MAX_COUNTERS];
  19         uint64_t  flags;
  20         uint64_t  reserved[4];
  21 } sn0_refcnt_set_t;
  22
  23 typedef struct sn0_refcnt_buf {
  24         sn0_refcnt_set_t   refcnt_set;
  25         uint64_t         paddr;
  26         uint64_t         page_size;
  27         cnodeid_t          cnodeid;         /* cnodeid + pad[3] use 64 bits */
  28         uint16_t           pad[3];
  29         uint64_t         reserved[4];
  30 } sn0_refcnt_buf_t;
  31
  32 typedef struct sn0_refcnt_args {
  33         uint64_t          vaddr;
  34         uint64_t          len;
  35         sn0_refcnt_buf_t*   buf;
  36         uint64_t          reserved[4];
  37 } sn0_refcnt_args_t;
  38
  39 /*
  40  * Info needed by the user level program
  41  * to mmap the refcnt buffer
  42  */
  43
  44 #define RCB_INFO_GET  1
  45 #define RCB_SLOT_GET  2
  46
  47 typedef struct rcb_info {
  48         uint64_t  rcb_len;                  /* total refcnt buffer len in bytes */
  49
  50         int         rcb_sw_sets;              /* number of sw counter sets in buffer */
  51         int         rcb_sw_counters_per_set;  /* sw counters per set -- num_compact_nodes */
  52         int         rcb_sw_counter_size;      /* sizeof(refcnt_t) -- size of sw cntr */
  53
  54         int         rcb_base_pages;           /* number of base pages in node */
  55         int         rcb_base_page_size;       /* sw base page size */
  56         uint64_t  rcb_base_paddr;           /* base physical address for this node */
  57
  58         int         rcb_cnodeid;              /* cnodeid for this node */
  59         int         rcb_granularity;          /* hw page size used for counter sets */
  60         uint        rcb_hw_counter_max;       /* max hwcounter count (width mask) */
  61         int         rcb_diff_threshold;       /* current node differential threshold */
  62         int         rcb_abs_threshold;        /* current node absolute threshold */
  63         int         rcb_num_slots;            /* physmem slots */
  64
  65         int         rcb_reserved[512];
  66
  67 } rcb_info_t;
  68
  69 typedef struct rcb_slot {
  70         uint64_t  base;
  71         uint64_t  size;
  72 } rcb_slot_t;
  73
  74 #if defined(__KERNEL__)
  75 typedef struct sn0_refcnt_args_32 {
  76         uint64_t    vaddr;
  77         uint64_t    len;
  78         app32_ptr_t   buf;
  79         uint64_t    reserved[4];
  80 } sn0_refcnt_args_32_t;
  81
  82 /* Defines and Macros  */
  83 /* A set of reference counts are for 4k bytes of physical memory */
  84 #define NBPREFCNTP      0x1000
  85 #define BPREFCNTPSHIFT  12
  86 #define bytes_to_refcntpages(x) (((__psunsigned_t)(x)+(NBPREFCNTP-1))>>BPREFCNTPSHIFT)
  87 #define refcntpage_offset(x)    ((__psunsigned_t)(x)&((NBPP-1)&~(NBPREFCNTP-1)))
  88 #define align_to_refcntpage(x)  ((__psunsigned_t)(x)&(~(NBPREFCNTP-1)))
  89
  90 extern void migr_refcnt_read(sn0_refcnt_buf_t*);
  91 extern void migr_refcnt_read_extended(sn0_refcnt_buf_t*);
  92 extern int migr_refcnt_enabled(void);
  93
  94 #endif /* __KERNEL__ */
  95
  96 #endif /* _ASM_IA64_SN_SN1_HWCNTRS_H */