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bc63d387 DN |
1 | /* |
2 | * This file is subject to the terms and conditions of the GNU General Public | |
3 | * License. See the file "COPYING" in the main directory of this archive | |
4 | * for more details. | |
5 | * | |
6 | * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved. | |
7 | */ | |
8 | ||
9 | /* | |
10 | * Cross Partition (XP) uv-based functions. | |
11 | * | |
12 | * Architecture specific implementation of common functions. | |
13 | * | |
14 | */ | |
15 | ||
a812dcc3 DN |
16 | #include <linux/device.h> |
17 | #include <asm/uv/uv_hub.h> | |
6c1c325d DN |
18 | #if defined CONFIG_X86_64 |
19 | #include <asm/uv/bios.h> | |
20 | #elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV | |
21 | #include <asm/sn/sn_sal.h> | |
22 | #endif | |
a812dcc3 | 23 | #include "../sgi-gru/grukservices.h" |
bc63d387 DN |
24 | #include "xp.h" |
25 | ||
a812dcc3 DN |
26 | /* |
27 | * Convert a virtual memory address to a physical memory address. | |
28 | */ | |
29 | static unsigned long | |
30 | xp_pa_uv(void *addr) | |
31 | { | |
32 | return uv_gpa(addr); | |
33 | } | |
34 | ||
68212893 RH |
35 | /* |
36 | * Convert a global physical to socket physical address. | |
37 | */ | |
38 | static unsigned long | |
39 | xp_socket_pa_uv(unsigned long gpa) | |
40 | { | |
41 | return uv_gpa_to_soc_phys_ram(gpa); | |
42 | } | |
43 | ||
c2c9f115 RH |
44 | static enum xp_retval |
45 | xp_remote_mmr_read(unsigned long dst_gpa, const unsigned long src_gpa, | |
46 | size_t len) | |
47 | { | |
48 | int ret; | |
49 | unsigned long *dst_va = __va(uv_gpa_to_soc_phys_ram(dst_gpa)); | |
50 | ||
51 | BUG_ON(!uv_gpa_in_mmr_space(src_gpa)); | |
52 | BUG_ON(len != 8); | |
53 | ||
54 | ret = gru_read_gpa(dst_va, src_gpa); | |
55 | if (ret == 0) | |
56 | return xpSuccess; | |
57 | ||
58 | dev_err(xp, "gru_read_gpa() failed, dst_gpa=0x%016lx src_gpa=0x%016lx " | |
59 | "len=%ld\n", dst_gpa, src_gpa, len); | |
60 | return xpGruCopyError; | |
61 | } | |
62 | ||
63 | ||
908787db | 64 | static enum xp_retval |
a812dcc3 DN |
65 | xp_remote_memcpy_uv(unsigned long dst_gpa, const unsigned long src_gpa, |
66 | size_t len) | |
908787db | 67 | { |
a812dcc3 DN |
68 | int ret; |
69 | ||
c2c9f115 RH |
70 | if (uv_gpa_in_mmr_space(src_gpa)) |
71 | return xp_remote_mmr_read(dst_gpa, src_gpa, len); | |
72 | ||
a812dcc3 DN |
73 | ret = gru_copy_gpa(dst_gpa, src_gpa, len); |
74 | if (ret == 0) | |
75 | return xpSuccess; | |
76 | ||
77 | dev_err(xp, "gru_copy_gpa() failed, dst_gpa=0x%016lx src_gpa=0x%016lx " | |
78 | "len=%ld\n", dst_gpa, src_gpa, len); | |
79 | return xpGruCopyError; | |
908787db DN |
80 | } |
81 | ||
5b8669df DN |
82 | static int |
83 | xp_cpu_to_nasid_uv(int cpuid) | |
84 | { | |
85 | /* ??? Is this same as sn2 nasid in mach/part bitmaps set up by SAL? */ | |
86 | return UV_PNODE_TO_NASID(uv_cpu_to_pnode(cpuid)); | |
87 | } | |
88 | ||
6c1c325d DN |
89 | static enum xp_retval |
90 | xp_expand_memprotect_uv(unsigned long phys_addr, unsigned long size) | |
91 | { | |
92 | int ret; | |
93 | ||
94 | #if defined CONFIG_X86_64 | |
95 | ret = uv_bios_change_memprotect(phys_addr, size, UV_MEMPROT_ALLOW_RW); | |
96 | if (ret != BIOS_STATUS_SUCCESS) { | |
97 | dev_err(xp, "uv_bios_change_memprotect(,, " | |
98 | "UV_MEMPROT_ALLOW_RW) failed, ret=%d\n", ret); | |
99 | return xpBiosError; | |
100 | } | |
101 | ||
102 | #elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV | |
103 | u64 nasid_array; | |
104 | ||
105 | ret = sn_change_memprotect(phys_addr, size, SN_MEMPROT_ACCESS_CLASS_1, | |
106 | &nasid_array); | |
107 | if (ret != 0) { | |
108 | dev_err(xp, "sn_change_memprotect(,, " | |
109 | "SN_MEMPROT_ACCESS_CLASS_1,) failed ret=%d\n", ret); | |
110 | return xpSalError; | |
111 | } | |
112 | #else | |
113 | #error not a supported configuration | |
114 | #endif | |
115 | return xpSuccess; | |
116 | } | |
117 | ||
118 | static enum xp_retval | |
119 | xp_restrict_memprotect_uv(unsigned long phys_addr, unsigned long size) | |
120 | { | |
121 | int ret; | |
122 | ||
123 | #if defined CONFIG_X86_64 | |
124 | ret = uv_bios_change_memprotect(phys_addr, size, | |
125 | UV_MEMPROT_RESTRICT_ACCESS); | |
126 | if (ret != BIOS_STATUS_SUCCESS) { | |
127 | dev_err(xp, "uv_bios_change_memprotect(,, " | |
128 | "UV_MEMPROT_RESTRICT_ACCESS) failed, ret=%d\n", ret); | |
129 | return xpBiosError; | |
130 | } | |
131 | ||
132 | #elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV | |
133 | u64 nasid_array; | |
134 | ||
135 | ret = sn_change_memprotect(phys_addr, size, SN_MEMPROT_ACCESS_CLASS_0, | |
136 | &nasid_array); | |
137 | if (ret != 0) { | |
138 | dev_err(xp, "sn_change_memprotect(,, " | |
139 | "SN_MEMPROT_ACCESS_CLASS_0,) failed ret=%d\n", ret); | |
140 | return xpSalError; | |
141 | } | |
142 | #else | |
143 | #error not a supported configuration | |
144 | #endif | |
145 | return xpSuccess; | |
146 | } | |
147 | ||
bc63d387 DN |
148 | enum xp_retval |
149 | xp_init_uv(void) | |
150 | { | |
151 | BUG_ON(!is_uv()); | |
152 | ||
153 | xp_max_npartitions = XP_MAX_NPARTITIONS_UV; | |
31de5ece DN |
154 | xp_partition_id = sn_partition_id; |
155 | xp_region_size = sn_region_size; | |
908787db | 156 | |
a812dcc3 | 157 | xp_pa = xp_pa_uv; |
68212893 | 158 | xp_socket_pa = xp_socket_pa_uv; |
908787db | 159 | xp_remote_memcpy = xp_remote_memcpy_uv; |
5b8669df | 160 | xp_cpu_to_nasid = xp_cpu_to_nasid_uv; |
6c1c325d DN |
161 | xp_expand_memprotect = xp_expand_memprotect_uv; |
162 | xp_restrict_memprotect = xp_restrict_memprotect_uv; | |
908787db DN |
163 | |
164 | return xpSuccess; | |
bc63d387 DN |
165 | } |
166 | ||
167 | void | |
168 | xp_exit_uv(void) | |
169 | { | |
170 | BUG_ON(!is_uv()); | |
171 | } |