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
sn_partition_reserved_page_pa(u64 buf,u64 * cookie,u64 * addr,u64 * len)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
sn_change_memprotect(u64 paddr,u64 len,u64 perms,u64 * nasid_array)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
sn_mq_watchlist_alloc(int blade,void * mq,unsigned int mq_size,unsigned long * intr_mmr_offset)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
sn_mq_watchlist_free(int blade,int watchlist_num)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 */
125