arch/ia64/include/asm/sn/sn_sal.h

   1 #ifndef _ASM_IA64_SN_SN_SAL_H
   2 #define _ASM_IA64_SN_SN_SAL_H
   3
   4 /*
   5  * System Abstraction Layer definitions for IA64
   6  *
   7  * This file is subject to the terms and conditions of the GNU General Public
   8  * License.  See the file "COPYING" in the main directory of this archive
   9  * for more details.
  10  *
  11  * Copyright (c) 2000-2006 Silicon Graphics, Inc.  All rights reserved.
  12  */
  13
  14 #include <linux/types.h>
  15 #include <asm/sal.h>
  16
  17 // SGI Specific Calls
  18 #define  SN_SAL_GET_PARTITION_ADDR                 0x02000009
  19 #define  SN_SAL_MEMPROTECT                         0x0200003e
  20
  21 #define  SN_SAL_WATCHLIST_ALLOC                    0x02000070
  22 #define  SN_SAL_WATCHLIST_FREE                     0x02000071
  23
  24 /*
  25  * SAL Error Codes
  26  */
  27 #define SALRET_MORE_PASSES      1
  28 #define SALRET_OK               0
  29 #define SALRET_NOT_IMPLEMENTED  (-1)
  30 #define SALRET_INVALID_ARG      (-2)
  31 #define SALRET_ERROR            (-3)
  32
  33 /*
  34  * Returns the physical address of the partition's reserved page through
  35  * an iterative number of calls.
  36  *
  37  * On first call, 'cookie' and 'len' should be set to 0, and 'addr'
  38  * set to the nasid of the partition whose reserved page's address is
  39  * being sought.
  40  * On subsequent calls, pass the values, that were passed back on the
  41  * previous call.
  42  *
  43  * While the return status equals SALRET_MORE_PASSES, keep calling
  44  * this function after first copying 'len' bytes starting at 'addr'
  45  * into 'buf'. Once the return status equals SALRET_OK, 'addr' will
  46  * be the physical address of the partition's reserved page. If the
  47  * return status equals neither of these, an error as occurred.
  48  */
  49 static inline s64
  50 sn_partition_reserved_page_pa(u64 buf, u64 *cookie, u64 *addr, u64 *len)
  51 {
  52         struct ia64_sal_retval rv;
  53         ia64_sal_oemcall_reentrant(&rv, SN_SAL_GET_PARTITION_ADDR, *cookie,
  54                                    *addr, buf, *len, 0, 0, 0);
  55         *cookie = rv.v0;
  56         *addr = rv.v1;
  57         *len = rv.v2;
  58         return rv.status;
  59 }
  60
  61 /*
  62  * Change memory access protections for a physical address range.
  63  * nasid_array is not used on Altix, but may be in future architectures.
  64  * Available memory protection access classes are defined after the function.
  65  */
  66 static inline int
  67 sn_change_memprotect(u64 paddr, u64 len, u64 perms, u64 *nasid_array)
  68 {
  69         struct ia64_sal_retval ret_stuff;
  70
  71         ia64_sal_oemcall_nolock(&ret_stuff, SN_SAL_MEMPROTECT, paddr, len,
  72                                 (u64)nasid_array, perms, 0, 0, 0);
  73         return ret_stuff.status;
  74 }
  75 #define SN_MEMPROT_ACCESS_CLASS_0               0x14a080
  76 #define SN_MEMPROT_ACCESS_CLASS_1               0x2520c2
  77 #define SN_MEMPROT_ACCESS_CLASS_2               0x14a1ca
  78 #define SN_MEMPROT_ACCESS_CLASS_3               0x14a290
  79 #define SN_MEMPROT_ACCESS_CLASS_6               0x084080
  80 #define SN_MEMPROT_ACCESS_CLASS_7               0x021080
  81
  82 union sn_watchlist_u {
  83         u64     val;
  84         struct {
  85                 u64     blade   : 16,
  86                         size    : 32,
  87                         filler  : 16;
  88         };
  89 };
  90
  91 static inline int
  92 sn_mq_watchlist_alloc(int blade, void *mq, unsigned int mq_size,
  93                                 unsigned long *intr_mmr_offset)
  94 {
  95         struct ia64_sal_retval rv;
  96         unsigned long addr;
  97         union sn_watchlist_u size_blade;
  98         int watchlist;
  99
 100         addr = (unsigned long)mq;
 101         size_blade.size = mq_size;
 102         size_blade.blade = blade;
 103
 104         /*
 105          * bios returns watchlist number or negative error number.
 106          */
 107         ia64_sal_oemcall_nolock(&rv, SN_SAL_WATCHLIST_ALLOC, addr,
 108                         size_blade.val, (u64)intr_mmr_offset,
 109                         (u64)&watchlist, 0, 0, 0);
 110         if (rv.status < 0)
 111                 return rv.status;
 112
 113         return watchlist;
 114 }
 115
 116 static inline int
 117 sn_mq_watchlist_free(int blade, int watchlist_num)
 118 {
 119         struct ia64_sal_retval rv;
 120         ia64_sal_oemcall_nolock(&rv, SN_SAL_WATCHLIST_FREE, blade,
 121                         watchlist_num, 0, 0, 0, 0, 0);
 122         return rv.status;
 123 }
 124 #endif /* _ASM_IA64_SN_SN_SAL_H */