LXR linux/arch/ia64/include/asm/sn/sn

   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 */
  49static inline s64
  50sn_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 */
  66static inline int
  67sn_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
  82union sn_watchlist_u {
  83        u64     val;
  84        struct {
  85                u64     blade   : 16,
  86                        size    : 32,
  87                        filler  : 16;
  88        };
  89};
  90
  91static inline int
  92sn_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
 116static inline int
 117sn_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 */
 125