diff options
author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-07 15:34:57 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-07 15:34:57 -0400 |
commit | a989705c4cf6e6c1a339c95f9daf658b4ba88ca8 (patch) | |
tree | d1925b831ec9fbae65db1b193dbad1869c43a9bc /Documentation | |
parent | 2d56d3c43cc97ae48586745556f5a5b564d61582 (diff) | |
parent | d29182534c5f39ff899763d1e0982d8f33791d6f (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
[IA64] update memory attribute aliasing documentation & test cases
[IA64] fail mmaps that span areas with incompatible attributes
[IA64] allow WB /sys/.../legacy_mem mmaps
[IA64] make ioremap avoid unsupported attributes
[IA64] rename ioremap variables to match i386
[IA64] relax per-cpu TLB requirement to DTC
[IA64] remove per-cpu ia64_phys_stacked_size_p8
[IA64] Fix example error injection program
[IA64] Itanium MC Error Injection Tool: pal_mc_error_inject() interface
[IA64] Itanium MC Error Injection Tool: Makefile changes
[IA64] Itanium MC Error Injection Tool: Driver sysfs interface
[IA64] Itanium MC Error Injection Tool: Doc and sample application
[IA64] Itanium MC Error Injection Tool: Kernel configuration
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/ia64/aliasing-test.c | 247 | ||||
-rw-r--r-- | Documentation/ia64/aliasing.txt | 71 | ||||
-rw-r--r-- | Documentation/ia64/err_inject.txt | 1068 |
3 files changed, 1352 insertions, 34 deletions
diff --git a/Documentation/ia64/aliasing-test.c b/Documentation/ia64/aliasing-test.c new file mode 100644 index 000000000000..3153167b41c3 --- /dev/null +++ b/Documentation/ia64/aliasing-test.c | |||
@@ -0,0 +1,247 @@ | |||
1 | /* | ||
2 | * Exercise /dev/mem mmap cases that have been troublesome in the past | ||
3 | * | ||
4 | * (c) Copyright 2007 Hewlett-Packard Development Company, L.P. | ||
5 | * Bjorn Helgaas <bjorn.helgaas@hp.com> | ||
6 | * | ||
7 | * This program is free software; you can redistribute it and/or modify | ||
8 | * it under the terms of the GNU General Public License version 2 as | ||
9 | * published by the Free Software Foundation. | ||
10 | */ | ||
11 | |||
12 | #include <stdlib.h> | ||
13 | #include <stdio.h> | ||
14 | #include <sys/types.h> | ||
15 | #include <dirent.h> | ||
16 | #include <fcntl.h> | ||
17 | #include <fnmatch.h> | ||
18 | #include <string.h> | ||
19 | #include <sys/mman.h> | ||
20 | #include <sys/stat.h> | ||
21 | #include <unistd.h> | ||
22 | |||
23 | int sum; | ||
24 | |||
25 | int map_mem(char *path, off_t offset, size_t length, int touch) | ||
26 | { | ||
27 | int fd, rc; | ||
28 | void *addr; | ||
29 | int *c; | ||
30 | |||
31 | fd = open(path, O_RDWR); | ||
32 | if (fd == -1) { | ||
33 | perror(path); | ||
34 | return -1; | ||
35 | } | ||
36 | |||
37 | addr = mmap(NULL, length, PROT_READ|PROT_WRITE, MAP_SHARED, fd, offset); | ||
38 | if (addr == MAP_FAILED) | ||
39 | return 1; | ||
40 | |||
41 | if (touch) { | ||
42 | c = (int *) addr; | ||
43 | while (c < (int *) (offset + length)) | ||
44 | sum += *c++; | ||
45 | } | ||
46 | |||
47 | rc = munmap(addr, length); | ||
48 | if (rc == -1) { | ||
49 | perror("munmap"); | ||
50 | return -1; | ||
51 | } | ||
52 | |||
53 | close(fd); | ||
54 | return 0; | ||
55 | } | ||
56 | |||
57 | int scan_sysfs(char *path, char *file, off_t offset, size_t length, int touch) | ||
58 | { | ||
59 | struct dirent **namelist; | ||
60 | char *name, *path2; | ||
61 | int i, n, r, rc, result = 0; | ||
62 | struct stat buf; | ||
63 | |||
64 | n = scandir(path, &namelist, 0, alphasort); | ||
65 | if (n < 0) { | ||
66 | perror("scandir"); | ||
67 | return -1; | ||
68 | } | ||
69 | |||
70 | for (i = 0; i < n; i++) { | ||
71 | name = namelist[i]->d_name; | ||
72 | |||
73 | if (fnmatch(".", name, 0) == 0) | ||
74 | goto skip; | ||
75 | if (fnmatch("..", name, 0) == 0) | ||
76 | goto skip; | ||
77 | |||
78 | path2 = malloc(strlen(path) + strlen(name) + 3); | ||
79 | strcpy(path2, path); | ||
80 | strcat(path2, "/"); | ||
81 | strcat(path2, name); | ||
82 | |||
83 | if (fnmatch(file, name, 0) == 0) { | ||
84 | rc = map_mem(path2, offset, length, touch); | ||
85 | if (rc == 0) | ||
86 | fprintf(stderr, "PASS: %s 0x%lx-0x%lx is %s\n", path2, offset, offset + length, touch ? "readable" : "mappable"); | ||
87 | else if (rc > 0) | ||
88 | fprintf(stderr, "PASS: %s 0x%lx-0x%lx not mappable\n", path2, offset, offset + length); | ||
89 | else { | ||
90 | fprintf(stderr, "FAIL: %s 0x%lx-0x%lx not accessible\n", path2, offset, offset + length); | ||
91 | return rc; | ||
92 | } | ||
93 | } else { | ||
94 | r = lstat(path2, &buf); | ||
95 | if (r == 0 && S_ISDIR(buf.st_mode)) { | ||
96 | rc = scan_sysfs(path2, file, offset, length, touch); | ||
97 | if (rc < 0) | ||
98 | return rc; | ||
99 | } | ||
100 | } | ||
101 | |||
102 | result |= rc; | ||
103 | free(path2); | ||
104 | |||
105 | skip: | ||
106 | free(namelist[i]); | ||
107 | } | ||
108 | free(namelist); | ||
109 | return rc; | ||
110 | } | ||
111 | |||
112 | char buf[1024]; | ||
113 | |||
114 | int read_rom(char *path) | ||
115 | { | ||
116 | int fd, rc; | ||
117 | size_t size = 0; | ||
118 | |||
119 | fd = open(path, O_RDWR); | ||
120 | if (fd == -1) { | ||
121 | perror(path); | ||
122 | return -1; | ||
123 | } | ||
124 | |||
125 | rc = write(fd, "1", 2); | ||
126 | if (rc <= 0) { | ||
127 | perror("write"); | ||
128 | return -1; | ||
129 | } | ||
130 | |||
131 | do { | ||
132 | rc = read(fd, buf, sizeof(buf)); | ||
133 | if (rc > 0) | ||
134 | size += rc; | ||
135 | } while (rc > 0); | ||
136 | |||
137 | close(fd); | ||
138 | return size; | ||
139 | } | ||
140 | |||
141 | int scan_rom(char *path, char *file) | ||
142 | { | ||
143 | struct dirent **namelist; | ||
144 | char *name, *path2; | ||
145 | int i, n, r, rc, result = 0; | ||
146 | struct stat buf; | ||
147 | |||
148 | n = scandir(path, &namelist, 0, alphasort); | ||
149 | if (n < 0) { | ||
150 | perror("scandir"); | ||
151 | return -1; | ||
152 | } | ||
153 | |||
154 | for (i = 0; i < n; i++) { | ||
155 | name = namelist[i]->d_name; | ||
156 | |||
157 | if (fnmatch(".", name, 0) == 0) | ||
158 | goto skip; | ||
159 | if (fnmatch("..", name, 0) == 0) | ||
160 | goto skip; | ||
161 | |||
162 | path2 = malloc(strlen(path) + strlen(name) + 3); | ||
163 | strcpy(path2, path); | ||
164 | strcat(path2, "/"); | ||
165 | strcat(path2, name); | ||
166 | |||
167 | if (fnmatch(file, name, 0) == 0) { | ||
168 | rc = read_rom(path2); | ||
169 | |||
170 | /* | ||
171 | * It's OK if the ROM is unreadable. Maybe there | ||
172 | * is no ROM, or some other error ocurred. The | ||
173 | * important thing is that no MCA happened. | ||
174 | */ | ||
175 | if (rc > 0) | ||
176 | fprintf(stderr, "PASS: %s read %ld bytes\n", path2, rc); | ||
177 | else { | ||
178 | fprintf(stderr, "PASS: %s not readable\n", path2); | ||
179 | return rc; | ||
180 | } | ||
181 | } else { | ||
182 | r = lstat(path2, &buf); | ||
183 | if (r == 0 && S_ISDIR(buf.st_mode)) { | ||
184 | rc = scan_rom(path2, file); | ||
185 | if (rc < 0) | ||
186 | return rc; | ||
187 | } | ||
188 | } | ||
189 | |||
190 | result |= rc; | ||
191 | free(path2); | ||
192 | |||
193 | skip: | ||
194 | free(namelist[i]); | ||
195 | } | ||
196 | free(namelist); | ||
197 | return rc; | ||
198 | } | ||
199 | |||
200 | main() | ||
201 | { | ||
202 | int rc; | ||
203 | |||
204 | if (map_mem("/dev/mem", 0, 0xA0000, 1) == 0) | ||
205 | fprintf(stderr, "PASS: /dev/mem 0x0-0xa0000 is readable\n"); | ||
206 | else | ||
207 | fprintf(stderr, "FAIL: /dev/mem 0x0-0xa0000 not accessible\n"); | ||
208 | |||
209 | /* | ||
210 | * It's not safe to blindly read the VGA frame buffer. If you know | ||
211 | * how to poke the card the right way, it should respond, but it's | ||
212 | * not safe in general. Many machines, e.g., Intel chipsets, cover | ||
213 | * up a non-responding card by just returning -1, but others will | ||
214 | * report the failure as a machine check. | ||
215 | */ | ||
216 | if (map_mem("/dev/mem", 0xA0000, 0x20000, 0) == 0) | ||
217 | fprintf(stderr, "PASS: /dev/mem 0xa0000-0xc0000 is mappable\n"); | ||
218 | else | ||
219 | fprintf(stderr, "FAIL: /dev/mem 0xa0000-0xc0000 not accessible\n"); | ||
220 | |||
221 | if (map_mem("/dev/mem", 0xC0000, 0x40000, 1) == 0) | ||
222 | fprintf(stderr, "PASS: /dev/mem 0xc0000-0x100000 is readable\n"); | ||
223 | else | ||
224 | fprintf(stderr, "FAIL: /dev/mem 0xc0000-0x100000 not accessible\n"); | ||
225 | |||
226 | /* | ||
227 | * Often you can map all the individual pieces above (0-0xA0000, | ||
228 | * 0xA0000-0xC0000, and 0xC0000-0x100000), but can't map the whole | ||
229 | * thing at once. This is because the individual pieces use different | ||
230 | * attributes, and there's no single attribute supported over the | ||
231 | * whole region. | ||
232 | */ | ||
233 | rc = map_mem("/dev/mem", 0, 1024*1024, 0); | ||
234 | if (rc == 0) | ||
235 | fprintf(stderr, "PASS: /dev/mem 0x0-0x100000 is mappable\n"); | ||
236 | else if (rc > 0) | ||
237 | fprintf(stderr, "PASS: /dev/mem 0x0-0x100000 not mappable\n"); | ||
238 | else | ||
239 | fprintf(stderr, "FAIL: /dev/mem 0x0-0x100000 not accessible\n"); | ||
240 | |||
241 | scan_sysfs("/sys/class/pci_bus", "legacy_mem", 0, 0xA0000, 1); | ||
242 | scan_sysfs("/sys/class/pci_bus", "legacy_mem", 0xA0000, 0x20000, 0); | ||
243 | scan_sysfs("/sys/class/pci_bus", "legacy_mem", 0xC0000, 0x40000, 1); | ||
244 | scan_sysfs("/sys/class/pci_bus", "legacy_mem", 0, 1024*1024, 0); | ||
245 | |||
246 | scan_rom("/sys/devices", "rom"); | ||
247 | } | ||
diff --git a/Documentation/ia64/aliasing.txt b/Documentation/ia64/aliasing.txt index 38f9a52d1820..9a431a7d0f5d 100644 --- a/Documentation/ia64/aliasing.txt +++ b/Documentation/ia64/aliasing.txt | |||
@@ -112,16 +112,6 @@ POTENTIAL ATTRIBUTE ALIASING CASES | |||
112 | 112 | ||
113 | The /dev/mem mmap constraints apply. | 113 | The /dev/mem mmap constraints apply. |
114 | 114 | ||
115 | However, since this is for mapping legacy MMIO space, WB access | ||
116 | does not make sense. This matters on machines without legacy | ||
117 | VGA support: these machines may have WB memory for the entire | ||
118 | first megabyte (or even the entire first granule). | ||
119 | |||
120 | On these machines, we could mmap legacy_mem as WB, which would | ||
121 | be safe in terms of attribute aliasing, but X has no way of | ||
122 | knowing that it is accessing regular memory, not a frame buffer, | ||
123 | so the kernel should fail the mmap rather than doing it with WB. | ||
124 | |||
125 | read/write of /dev/mem | 115 | read/write of /dev/mem |
126 | 116 | ||
127 | This uses copy_from_user(), which implicitly uses a kernel | 117 | This uses copy_from_user(), which implicitly uses a kernel |
@@ -138,14 +128,20 @@ POTENTIAL ATTRIBUTE ALIASING CASES | |||
138 | 128 | ||
139 | ioremap() | 129 | ioremap() |
140 | 130 | ||
141 | This returns a kernel identity mapping for use inside the | 131 | This returns a mapping for use inside the kernel. |
142 | kernel. | ||
143 | 132 | ||
144 | If the region is in kern_memmap, we should use the attribute | 133 | If the region is in kern_memmap, we should use the attribute |
145 | specified there. Otherwise, if the EFI memory map reports that | 134 | specified there. |
146 | the entire granule supports WB, we should use that (granules | 135 | |
147 | that are partially reserved or occupied by firmware do not appear | 136 | If the EFI memory map reports that the entire granule supports |
148 | in kern_memmap). Otherwise, we should use a UC mapping. | 137 | WB, we should use that (granules that are partially reserved |
138 | or occupied by firmware do not appear in kern_memmap). | ||
139 | |||
140 | If the granule contains non-WB memory, but we can cover the | ||
141 | region safely with kernel page table mappings, we can use | ||
142 | ioremap_page_range() as most other architectures do. | ||
143 | |||
144 | Failing all of the above, we have to fall back to a UC mapping. | ||
149 | 145 | ||
150 | PAST PROBLEM CASES | 146 | PAST PROBLEM CASES |
151 | 147 | ||
@@ -158,7 +154,7 @@ PAST PROBLEM CASES | |||
158 | succeed. It may create either WB or UC user mappings, depending | 154 | succeed. It may create either WB or UC user mappings, depending |
159 | on whether the region is in kern_memmap or the EFI memory map. | 155 | on whether the region is in kern_memmap or the EFI memory map. |
160 | 156 | ||
161 | mmap of 0x0-0xA0000 /dev/mem by "hwinfo" on HP sx1000 with VGA enabled | 157 | mmap of 0x0-0x9FFFF /dev/mem by "hwinfo" on HP sx1000 with VGA enabled |
162 | 158 | ||
163 | See https://bugzilla.novell.com/show_bug.cgi?id=140858. | 159 | See https://bugzilla.novell.com/show_bug.cgi?id=140858. |
164 | 160 | ||
@@ -171,28 +167,25 @@ PAST PROBLEM CASES | |||
171 | so it is safe to use WB mappings. | 167 | so it is safe to use WB mappings. |
172 | 168 | ||
173 | The kernel VGA driver may ioremap the VGA frame buffer at 0xA0000, | 169 | The kernel VGA driver may ioremap the VGA frame buffer at 0xA0000, |
174 | which will use a granule-sized UC mapping covering 0-0xFFFFF. This | 170 | which uses a granule-sized UC mapping. This granule will cover some |
175 | granule covers some WB-only memory, but since UC is non-speculative, | 171 | WB-only memory, but since UC is non-speculative, the processor will |
176 | the processor will never generate an uncacheable reference to the | 172 | never generate an uncacheable reference to the WB-only areas unless |
177 | WB-only areas unless the driver explicitly touches them. | 173 | the driver explicitly touches them. |
178 | 174 | ||
179 | mmap of 0x0-0xFFFFF legacy_mem by "X" | 175 | mmap of 0x0-0xFFFFF legacy_mem by "X" |
180 | 176 | ||
181 | If the EFI memory map reports this entire range as WB, there | 177 | If the EFI memory map reports that the entire range supports the |
182 | is no VGA MMIO hole, and the mmap should fail or be done with | 178 | same attributes, we can allow the mmap (and we will prefer WB if |
183 | a WB mapping. | 179 | supported, as is the case with HP sx[12]000 machines with VGA |
180 | disabled). | ||
184 | 181 | ||
185 | There's no easy way for X to determine whether the 0xA0000-0xBFFFF | 182 | If EFI reports the range as partly WB and partly UC (as on sx[12]000 |
186 | region is a frame buffer or just memory, so I think it's best to | 183 | machines with VGA enabled), we must fail the mmap because there's no |
187 | just fail this mmap request rather than using a WB mapping. As | 184 | safe attribute to use. |
188 | far as I know, there's no need to map legacy_mem with WB | ||
189 | mappings. | ||
190 | 185 | ||
191 | Otherwise, a UC mapping of the entire region is probably safe. | 186 | If EFI reports some of the range but not all (as on Intel firmware |
192 | The VGA hole means the region will not be in kern_memmap. The | 187 | that doesn't report the VGA frame buffer at all), we should fail the |
193 | HP sx1000 chipset doesn't support UC access to the memory surrounding | 188 | mmap and force the user to map just the specific region of interest. |
194 | the VGA hole, but X doesn't need that area anyway and should not | ||
195 | reference it. | ||
196 | 189 | ||
197 | mmap of 0xA0000-0xBFFFF legacy_mem by "X" on HP sx1000 with VGA disabled | 190 | mmap of 0xA0000-0xBFFFF legacy_mem by "X" on HP sx1000 with VGA disabled |
198 | 191 | ||
@@ -202,6 +195,16 @@ PAST PROBLEM CASES | |||
202 | This is a special case of the previous case, and the mmap should | 195 | This is a special case of the previous case, and the mmap should |
203 | fail for the same reason as above. | 196 | fail for the same reason as above. |
204 | 197 | ||
198 | read of /sys/devices/.../rom | ||
199 | |||
200 | For VGA devices, this may cause an ioremap() of 0xC0000. This | ||
201 | used to be done with a UC mapping, because the VGA frame buffer | ||
202 | at 0xA0000 prevents use of a WB granule. The UC mapping causes | ||
203 | an MCA on HP sx[12]000 chipsets. | ||
204 | |||
205 | We should use WB page table mappings to avoid covering the VGA | ||
206 | frame buffer. | ||
207 | |||
205 | NOTES | 208 | NOTES |
206 | 209 | ||
207 | [1] SDM rev 2.2, vol 2, sec 4.4.1. | 210 | [1] SDM rev 2.2, vol 2, sec 4.4.1. |
diff --git a/Documentation/ia64/err_inject.txt b/Documentation/ia64/err_inject.txt new file mode 100644 index 000000000000..6449a7090dbb --- /dev/null +++ b/Documentation/ia64/err_inject.txt | |||
@@ -0,0 +1,1068 @@ | |||
1 | |||
2 | IPF Machine Check (MC) error inject tool | ||
3 | ======================================== | ||
4 | |||
5 | IPF Machine Check (MC) error inject tool is used to inject MC | ||
6 | errors from Linux. The tool is a test bed for IPF MC work flow including | ||
7 | hardware correctable error handling, OS recoverable error handling, MC | ||
8 | event logging, etc. | ||
9 | |||
10 | The tool includes two parts: a kernel driver and a user application | ||
11 | sample. The driver provides interface to PAL to inject error | ||
12 | and query error injection capabilities. The driver code is in | ||
13 | arch/ia64/kernel/err_inject.c. The application sample (shown below) | ||
14 | provides a combination of various errors and calls the driver's interface | ||
15 | (sysfs interface) to inject errors or query error injection capabilities. | ||
16 | |||
17 | The tool can be used to test Intel IPF machine MC handling capabilities. | ||
18 | It's especially useful for people who can not access hardware MC injection | ||
19 | tool to inject error. It's also very useful to integrate with other | ||
20 | software test suits to do stressful testing on IPF. | ||
21 | |||
22 | Below is a sample application as part of the whole tool. The sample | ||
23 | can be used as a working test tool. Or it can be expanded to include | ||
24 | more features. It also can be a integrated into a libary or other user | ||
25 | application to have more thorough test. | ||
26 | |||
27 | The sample application takes err.conf as error configuation input. Gcc | ||
28 | compiles the code. After you install err_inject driver, you can run | ||
29 | this sample application to inject errors. | ||
30 | |||
31 | Errata: Itanium 2 Processors Specification Update lists some errata against | ||
32 | the pal_mc_error_inject PAL procedure. The following err.conf has been tested | ||
33 | on latest Montecito PAL. | ||
34 | |||
35 | err.conf: | ||
36 | |||
37 | #This is configuration file for err_inject_tool. | ||
38 | #The format of the each line is: | ||
39 | #cpu, loop, interval, err_type_info, err_struct_info, err_data_buffer | ||
40 | #where | ||
41 | # cpu: logical cpu number the error will be inject in. | ||
42 | # loop: times the error will be injected. | ||
43 | # interval: In second. every so often one error is injected. | ||
44 | # err_type_info, err_struct_info: PAL parameters. | ||
45 | # | ||
46 | #Note: All values are hex w/o or w/ 0x prefix. | ||
47 | |||
48 | |||
49 | #On cpu2, inject only total 0x10 errors, interval 5 seconds | ||
50 | #corrected, data cache, hier-2, physical addr(assigned by tool code). | ||
51 | #working on Montecito latest PAL. | ||
52 | 2, 10, 5, 4101, 95 | ||
53 | |||
54 | #On cpu4, inject and consume total 0x10 errors, interval 5 seconds | ||
55 | #corrected, data cache, hier-2, physical addr(assigned by tool code). | ||
56 | #working on Montecito latest PAL. | ||
57 | 4, 10, 5, 4109, 95 | ||
58 | |||
59 | #On cpu15, inject and consume total 0x10 errors, interval 5 seconds | ||
60 | #recoverable, DTR0, hier-2. | ||
61 | #working on Montecito latest PAL. | ||
62 | 0xf, 0x10, 5, 4249, 15 | ||
63 | |||
64 | The sample application source code: | ||
65 | |||
66 | err_injection_tool.c: | ||
67 | |||
68 | /* | ||
69 | * This program is free software; you can redistribute it and/or modify | ||
70 | * it under the terms of the GNU General Public License as published by | ||
71 | * the Free Software Foundation; either version 2 of the License, or | ||
72 | * (at your option) any later version. | ||
73 | * | ||
74 | * This program is distributed in the hope that it will be useful, but | ||
75 | * WITHOUT ANY WARRANTY; without even the implied warranty of | ||
76 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | ||
77 | * NON INFRINGEMENT. See the GNU General Public License for more | ||
78 | * details. | ||
79 | * | ||
80 | * You should have received a copy of the GNU General Public License | ||
81 | * along with this program; if not, write to the Free Software | ||
82 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
83 | * | ||
84 | * Copyright (C) 2006 Intel Co | ||
85 | * Fenghua Yu <fenghua.yu@intel.com> | ||
86 | * | ||
87 | */ | ||
88 | #include <sys/types.h> | ||
89 | #include <sys/stat.h> | ||
90 | #include <fcntl.h> | ||
91 | #include <stdio.h> | ||
92 | #include <sched.h> | ||
93 | #include <unistd.h> | ||
94 | #include <stdlib.h> | ||
95 | #include <stdarg.h> | ||
96 | #include <string.h> | ||
97 | #include <errno.h> | ||
98 | #include <time.h> | ||
99 | #include <sys/ipc.h> | ||
100 | #include <sys/sem.h> | ||
101 | #include <sys/wait.h> | ||
102 | #include <sys/mman.h> | ||
103 | #include <sys/shm.h> | ||
104 | |||
105 | #define MAX_FN_SIZE 256 | ||
106 | #define MAX_BUF_SIZE 256 | ||
107 | #define DATA_BUF_SIZE 256 | ||
108 | #define NR_CPUS 512 | ||
109 | #define MAX_TASK_NUM 2048 | ||
110 | #define MIN_INTERVAL 5 // seconds | ||
111 | #define ERR_DATA_BUFFER_SIZE 3 // Three 8-byte. | ||
112 | #define PARA_FIELD_NUM 5 | ||
113 | #define MASK_SIZE (NR_CPUS/64) | ||
114 | #define PATH_FORMAT "/sys/devices/system/cpu/cpu%d/err_inject/" | ||
115 | |||
116 | int sched_setaffinity(pid_t pid, unsigned int len, unsigned long *mask); | ||
117 | |||
118 | int verbose; | ||
119 | #define vbprintf if (verbose) printf | ||
120 | |||
121 | int log_info(int cpu, const char *fmt, ...) | ||
122 | { | ||
123 | FILE *log; | ||
124 | char fn[MAX_FN_SIZE]; | ||
125 | char buf[MAX_BUF_SIZE]; | ||
126 | va_list args; | ||
127 | |||
128 | sprintf(fn, "%d.log", cpu); | ||
129 | log=fopen(fn, "a+"); | ||
130 | if (log==NULL) { | ||
131 | perror("Error open:"); | ||
132 | return -1; | ||
133 | } | ||
134 | |||
135 | va_start(args, fmt); | ||
136 | vprintf(fmt, args); | ||
137 | memset(buf, 0, MAX_BUF_SIZE); | ||
138 | vsprintf(buf, fmt, args); | ||
139 | va_end(args); | ||
140 | |||
141 | fwrite(buf, sizeof(buf), 1, log); | ||
142 | fclose(log); | ||
143 | |||
144 | return 0; | ||
145 | } | ||
146 | |||
147 | typedef unsigned long u64; | ||
148 | typedef unsigned int u32; | ||
149 | |||
150 | typedef union err_type_info_u { | ||
151 | struct { | ||
152 | u64 mode : 3, /* 0-2 */ | ||
153 | err_inj : 3, /* 3-5 */ | ||
154 | err_sev : 2, /* 6-7 */ | ||
155 | err_struct : 5, /* 8-12 */ | ||
156 | struct_hier : 3, /* 13-15 */ | ||
157 | reserved : 48; /* 16-63 */ | ||
158 | } err_type_info_u; | ||
159 | u64 err_type_info; | ||
160 | } err_type_info_t; | ||
161 | |||
162 | typedef union err_struct_info_u { | ||
163 | struct { | ||
164 | u64 siv : 1, /* 0 */ | ||
165 | c_t : 2, /* 1-2 */ | ||
166 | cl_p : 3, /* 3-5 */ | ||
167 | cl_id : 3, /* 6-8 */ | ||
168 | cl_dp : 1, /* 9 */ | ||
169 | reserved1 : 22, /* 10-31 */ | ||
170 | tiv : 1, /* 32 */ | ||
171 | trigger : 4, /* 33-36 */ | ||
172 | trigger_pl : 3, /* 37-39 */ | ||
173 | reserved2 : 24; /* 40-63 */ | ||
174 | } err_struct_info_cache; | ||
175 | struct { | ||
176 | u64 siv : 1, /* 0 */ | ||
177 | tt : 2, /* 1-2 */ | ||
178 | tc_tr : 2, /* 3-4 */ | ||
179 | tr_slot : 8, /* 5-12 */ | ||
180 | reserved1 : 19, /* 13-31 */ | ||
181 | tiv : 1, /* 32 */ | ||
182 | trigger : 4, /* 33-36 */ | ||
183 | trigger_pl : 3, /* 37-39 */ | ||
184 | reserved2 : 24; /* 40-63 */ | ||
185 | } err_struct_info_tlb; | ||
186 | struct { | ||
187 | u64 siv : 1, /* 0 */ | ||
188 | regfile_id : 4, /* 1-4 */ | ||
189 | reg_num : 7, /* 5-11 */ | ||
190 | reserved1 : 20, /* 12-31 */ | ||
191 | tiv : 1, /* 32 */ | ||
192 | trigger : 4, /* 33-36 */ | ||
193 | trigger_pl : 3, /* 37-39 */ | ||
194 | reserved2 : 24; /* 40-63 */ | ||
195 | } err_struct_info_register; | ||
196 | struct { | ||
197 | u64 reserved; | ||
198 | } err_struct_info_bus_processor_interconnect; | ||
199 | u64 err_struct_info; | ||
200 | } err_struct_info_t; | ||
201 | |||
202 | typedef union err_data_buffer_u { | ||
203 | struct { | ||
204 | u64 trigger_addr; /* 0-63 */ | ||
205 | u64 inj_addr; /* 64-127 */ | ||
206 | u64 way : 5, /* 128-132 */ | ||
207 | index : 20, /* 133-152 */ | ||
208 | : 39; /* 153-191 */ | ||
209 | } err_data_buffer_cache; | ||
210 | struct { | ||
211 | u64 trigger_addr; /* 0-63 */ | ||
212 | u64 inj_addr; /* 64-127 */ | ||
213 | u64 way : 5, /* 128-132 */ | ||
214 | index : 20, /* 133-152 */ | ||
215 | reserved : 39; /* 153-191 */ | ||
216 | } err_data_buffer_tlb; | ||
217 | struct { | ||
218 | u64 trigger_addr; /* 0-63 */ | ||
219 | } err_data_buffer_register; | ||
220 | struct { | ||
221 | u64 reserved; /* 0-63 */ | ||
222 | } err_data_buffer_bus_processor_interconnect; | ||
223 | u64 err_data_buffer[ERR_DATA_BUFFER_SIZE]; | ||
224 | } err_data_buffer_t; | ||
225 | |||
226 | typedef union capabilities_u { | ||
227 | struct { | ||
228 | u64 i : 1, | ||
229 | d : 1, | ||
230 | rv : 1, | ||
231 | tag : 1, | ||
232 | data : 1, | ||
233 | mesi : 1, | ||
234 | dp : 1, | ||
235 | reserved1 : 3, | ||
236 | pa : 1, | ||
237 | va : 1, | ||
238 | wi : 1, | ||
239 | reserved2 : 20, | ||
240 | trigger : 1, | ||
241 | trigger_pl : 1, | ||
242 | reserved3 : 30; | ||
243 | } capabilities_cache; | ||
244 | struct { | ||
245 | u64 d : 1, | ||
246 | i : 1, | ||
247 | rv : 1, | ||
248 | tc : 1, | ||
249 | tr : 1, | ||
250 | reserved1 : 27, | ||
251 | trigger : 1, | ||
252 | trigger_pl : 1, | ||
253 | reserved2 : 30; | ||
254 | } capabilities_tlb; | ||
255 | struct { | ||
256 | u64 gr_b0 : 1, | ||
257 | gr_b1 : 1, | ||
258 | fr : 1, | ||
259 | br : 1, | ||
260 | pr : 1, | ||
261 | ar : 1, | ||
262 | cr : 1, | ||
263 | rr : 1, | ||
264 | pkr : 1, | ||
265 | dbr : 1, | ||
266 | ibr : 1, | ||
267 | pmc : 1, | ||
268 | pmd : 1, | ||
269 | reserved1 : 3, | ||
270 | regnum : 1, | ||
271 | reserved2 : 15, | ||
272 | trigger : 1, | ||
273 | trigger_pl : 1, | ||
274 | reserved3 : 30; | ||
275 | } capabilities_register; | ||
276 | struct { | ||
277 | u64 reserved; | ||
278 | } capabilities_bus_processor_interconnect; | ||
279 | } capabilities_t; | ||
280 | |||
281 | typedef struct resources_s { | ||
282 | u64 ibr0 : 1, | ||
283 | ibr2 : 1, | ||
284 | ibr4 : 1, | ||
285 | ibr6 : 1, | ||
286 | dbr0 : 1, | ||
287 | dbr2 : 1, | ||
288 | dbr4 : 1, | ||
289 | dbr6 : 1, | ||
290 | reserved : 48; | ||
291 | } resources_t; | ||
292 | |||
293 | |||
294 | long get_page_size(void) | ||
295 | { | ||
296 | long page_size=sysconf(_SC_PAGESIZE); | ||
297 | return page_size; | ||
298 | } | ||
299 | |||
300 | #define PAGE_SIZE (get_page_size()==-1?0x4000:get_page_size()) | ||
301 | #define SHM_SIZE (2*PAGE_SIZE*NR_CPUS) | ||
302 | #define SHM_VA 0x2000000100000000 | ||
303 | |||
304 | int shmid; | ||
305 | void *shmaddr; | ||
306 | |||
307 | int create_shm(void) | ||
308 | { | ||
309 | key_t key; | ||
310 | char fn[MAX_FN_SIZE]; | ||
311 | |||
312 | /* cpu0 is always existing */ | ||
313 | sprintf(fn, PATH_FORMAT, 0); | ||
314 | if ((key = ftok(fn, 's')) == -1) { | ||
315 | perror("ftok"); | ||
316 | return -1; | ||
317 | } | ||
318 | |||
319 | shmid = shmget(key, SHM_SIZE, 0644 | IPC_CREAT); | ||
320 | if (shmid == -1) { | ||
321 | if (errno==EEXIST) { | ||
322 | shmid = shmget(key, SHM_SIZE, 0); | ||
323 | if (shmid == -1) { | ||
324 | perror("shmget"); | ||
325 | return -1; | ||
326 | } | ||
327 | } | ||
328 | else { | ||
329 | perror("shmget"); | ||
330 | return -1; | ||
331 | } | ||
332 | } | ||
333 | vbprintf("shmid=%d", shmid); | ||
334 | |||
335 | /* connect to the segment: */ | ||
336 | shmaddr = shmat(shmid, (void *)SHM_VA, 0); | ||
337 | if (shmaddr == (void*)-1) { | ||
338 | perror("shmat"); | ||
339 | return -1; | ||
340 | } | ||
341 | |||
342 | memset(shmaddr, 0, SHM_SIZE); | ||
343 | mlock(shmaddr, SHM_SIZE); | ||
344 | |||
345 | return 0; | ||
346 | } | ||
347 | |||
348 | int free_shm() | ||
349 | { | ||
350 | munlock(shmaddr, SHM_SIZE); | ||
351 | shmdt(shmaddr); | ||
352 | semctl(shmid, 0, IPC_RMID); | ||
353 | |||
354 | return 0; | ||
355 | } | ||
356 | |||
357 | #ifdef _SEM_SEMUN_UNDEFINED | ||
358 | union semun | ||
359 | { | ||
360 | int val; | ||
361 | struct semid_ds *buf; | ||
362 | unsigned short int *array; | ||
363 | struct seminfo *__buf; | ||
364 | }; | ||
365 | #endif | ||
366 | |||
367 | u32 mode=1; /* 1: physical mode; 2: virtual mode. */ | ||
368 | int one_lock=1; | ||
369 | key_t key[NR_CPUS]; | ||
370 | int semid[NR_CPUS]; | ||
371 | |||
372 | int create_sem(int cpu) | ||
373 | { | ||
374 | union semun arg; | ||
375 | char fn[MAX_FN_SIZE]; | ||
376 | int sid; | ||
377 | |||
378 | sprintf(fn, PATH_FORMAT, cpu); | ||
379 | sprintf(fn, "%s/%s", fn, "err_type_info"); | ||
380 | if ((key[cpu] = ftok(fn, 'e')) == -1) { | ||
381 | perror("ftok"); | ||
382 | return -1; | ||
383 | } | ||
384 | |||
385 | if (semid[cpu]!=0) | ||
386 | return 0; | ||
387 | |||
388 | /* clear old semaphore */ | ||
389 | if ((sid = semget(key[cpu], 1, 0)) != -1) | ||
390 | semctl(sid, 0, IPC_RMID); | ||
391 | |||
392 | /* get one semaphore */ | ||
393 | if ((semid[cpu] = semget(key[cpu], 1, IPC_CREAT | IPC_EXCL)) == -1) { | ||
394 | perror("semget"); | ||
395 | printf("Please remove semaphore with key=0x%lx, then run the tool.\n", | ||
396 | (u64)key[cpu]); | ||
397 | return -1; | ||
398 | } | ||
399 | |||
400 | vbprintf("semid[%d]=0x%lx, key[%d]=%lx\n",cpu,(u64)semid[cpu],cpu, | ||
401 | (u64)key[cpu]); | ||
402 | /* initialize the semaphore to 1: */ | ||
403 | arg.val = 1; | ||
404 | if (semctl(semid[cpu], 0, SETVAL, arg) == -1) { | ||
405 | perror("semctl"); | ||
406 | return -1; | ||
407 | } | ||
408 | |||
409 | return 0; | ||
410 | } | ||
411 | |||
412 | static int lock(int cpu) | ||
413 | { | ||
414 | struct sembuf lock; | ||
415 | |||
416 | lock.sem_num = cpu; | ||
417 | lock.sem_op = 1; | ||
418 | semop(semid[cpu], &lock, 1); | ||
419 | |||
420 | return 0; | ||
421 | } | ||
422 | |||
423 | static int unlock(int cpu) | ||
424 | { | ||
425 | struct sembuf unlock; | ||
426 | |||
427 | unlock.sem_num = cpu; | ||
428 | unlock.sem_op = -1; | ||
429 | semop(semid[cpu], &unlock, 1); | ||
430 | |||
431 | return 0; | ||
432 | } | ||
433 | |||
434 | void free_sem(int cpu) | ||
435 | { | ||
436 | semctl(semid[cpu], 0, IPC_RMID); | ||
437 | } | ||
438 | |||
439 | int wr_multi(char *fn, unsigned long *data, int size) | ||
440 | { | ||
441 | int fd; | ||
442 | char buf[MAX_BUF_SIZE]; | ||
443 | int ret; | ||
444 | |||
445 | if (size==1) | ||
446 | sprintf(buf, "%lx", *data); | ||
447 | else if (size==3) | ||
448 | sprintf(buf, "%lx,%lx,%lx", data[0], data[1], data[2]); | ||
449 | else { | ||
450 | fprintf(stderr,"write to file with wrong size!\n"); | ||
451 | return -1; | ||
452 | } | ||
453 | |||
454 | fd=open(fn, O_RDWR); | ||
455 | if (!fd) { | ||
456 | perror("Error:"); | ||
457 | return -1; | ||
458 | } | ||
459 | ret=write(fd, buf, sizeof(buf)); | ||
460 | close(fd); | ||
461 | return ret; | ||
462 | } | ||
463 | |||
464 | int wr(char *fn, unsigned long data) | ||
465 | { | ||
466 | return wr_multi(fn, &data, 1); | ||
467 | } | ||
468 | |||
469 | int rd(char *fn, unsigned long *data) | ||
470 | { | ||
471 | int fd; | ||
472 | char buf[MAX_BUF_SIZE]; | ||
473 | |||
474 | fd=open(fn, O_RDONLY); | ||
475 | if (fd<0) { | ||
476 | perror("Error:"); | ||
477 | return -1; | ||
478 | } | ||
479 | read(fd, buf, MAX_BUF_SIZE); | ||
480 | *data=strtoul(buf, NULL, 16); | ||
481 | close(fd); | ||
482 | return 0; | ||
483 | } | ||
484 | |||
485 | int rd_status(char *path, int *status) | ||
486 | { | ||
487 | char fn[MAX_FN_SIZE]; | ||
488 | sprintf(fn, "%s/status", path); | ||
489 | if (rd(fn, (u64*)status)<0) { | ||
490 | perror("status reading error.\n"); | ||
491 | return -1; | ||
492 | } | ||
493 | |||
494 | return 0; | ||
495 | } | ||
496 | |||
497 | int rd_capabilities(char *path, u64 *capabilities) | ||
498 | { | ||
499 | char fn[MAX_FN_SIZE]; | ||
500 | sprintf(fn, "%s/capabilities", path); | ||
501 | if (rd(fn, capabilities)<0) { | ||
502 | perror("capabilities reading error.\n"); | ||
503 | return -1; | ||
504 | } | ||
505 | |||
506 | return 0; | ||
507 | } | ||
508 | |||
509 | int rd_all(char *path) | ||
510 | { | ||
511 | unsigned long err_type_info, err_struct_info, err_data_buffer; | ||
512 | int status; | ||
513 | unsigned long capabilities, resources; | ||
514 | char fn[MAX_FN_SIZE]; | ||
515 | |||
516 | sprintf(fn, "%s/err_type_info", path); | ||
517 | if (rd(fn, &err_type_info)<0) { | ||
518 | perror("err_type_info reading error.\n"); | ||
519 | return -1; | ||
520 | } | ||
521 | printf("err_type_info=%lx\n", err_type_info); | ||
522 | |||
523 | sprintf(fn, "%s/err_struct_info", path); | ||
524 | if (rd(fn, &err_struct_info)<0) { | ||
525 | perror("err_struct_info reading error.\n"); | ||
526 | return -1; | ||
527 | } | ||
528 | printf("err_struct_info=%lx\n", err_struct_info); | ||
529 | |||
530 | sprintf(fn, "%s/err_data_buffer", path); | ||
531 | if (rd(fn, &err_data_buffer)<0) { | ||
532 | perror("err_data_buffer reading error.\n"); | ||
533 | return -1; | ||
534 | } | ||
535 | printf("err_data_buffer=%lx\n", err_data_buffer); | ||
536 | |||
537 | sprintf(fn, "%s/status", path); | ||
538 | if (rd("status", (u64*)&status)<0) { | ||
539 | perror("status reading error.\n"); | ||
540 | return -1; | ||
541 | } | ||
542 | printf("status=%d\n", status); | ||
543 | |||
544 | sprintf(fn, "%s/capabilities", path); | ||
545 | if (rd(fn,&capabilities)<0) { | ||
546 | perror("capabilities reading error.\n"); | ||
547 | return -1; | ||
548 | } | ||
549 | printf("capabilities=%lx\n", capabilities); | ||
550 | |||
551 | sprintf(fn, "%s/resources", path); | ||
552 | if (rd(fn, &resources)<0) { | ||
553 | perror("resources reading error.\n"); | ||
554 | return -1; | ||
555 | } | ||
556 | printf("resources=%lx\n", resources); | ||
557 | |||
558 | return 0; | ||
559 | } | ||
560 | |||
561 | int query_capabilities(char *path, err_type_info_t err_type_info, | ||
562 | u64 *capabilities) | ||
563 | { | ||
564 | char fn[MAX_FN_SIZE]; | ||
565 | err_struct_info_t err_struct_info; | ||
566 | err_data_buffer_t err_data_buffer; | ||
567 | |||
568 | err_struct_info.err_struct_info=0; | ||
569 | memset(err_data_buffer.err_data_buffer, -1, ERR_DATA_BUFFER_SIZE*8); | ||
570 | |||
571 | sprintf(fn, "%s/err_type_info", path); | ||
572 | wr(fn, err_type_info.err_type_info); | ||
573 | sprintf(fn, "%s/err_struct_info", path); | ||
574 | wr(fn, 0x0); | ||
575 | sprintf(fn, "%s/err_data_buffer", path); | ||
576 | wr_multi(fn, err_data_buffer.err_data_buffer, ERR_DATA_BUFFER_SIZE); | ||
577 | |||
578 | // Fire pal_mc_error_inject procedure. | ||
579 | sprintf(fn, "%s/call_start", path); | ||
580 | wr(fn, mode); | ||
581 | |||
582 | if (rd_capabilities(path, capabilities)<0) | ||
583 | return -1; | ||
584 | |||
585 | return 0; | ||
586 | } | ||
587 | |||
588 | int query_all_capabilities() | ||
589 | { | ||
590 | int status; | ||
591 | err_type_info_t err_type_info; | ||
592 | int err_sev, err_struct, struct_hier; | ||
593 | int cap=0; | ||
594 | u64 capabilities; | ||
595 | char path[MAX_FN_SIZE]; | ||
596 | |||
597 | err_type_info.err_type_info=0; // Initial | ||
598 | err_type_info.err_type_info_u.mode=0; // Query mode; | ||
599 | err_type_info.err_type_info_u.err_inj=0; | ||
600 | |||
601 | printf("All capabilities implemented in pal_mc_error_inject:\n"); | ||
602 | sprintf(path, PATH_FORMAT ,0); | ||
603 | for (err_sev=0;err_sev<3;err_sev++) | ||
604 | for (err_struct=0;err_struct<5;err_struct++) | ||
605 | for (struct_hier=0;struct_hier<5;struct_hier++) | ||
606 | { | ||
607 | status=-1; | ||
608 | capabilities=0; | ||
609 | err_type_info.err_type_info_u.err_sev=err_sev; | ||
610 | err_type_info.err_type_info_u.err_struct=err_struct; | ||
611 | err_type_info.err_type_info_u.struct_hier=struct_hier; | ||
612 | |||
613 | if (query_capabilities(path, err_type_info, &capabilities)<0) | ||
614 | continue; | ||
615 | |||
616 | if (rd_status(path, &status)<0) | ||
617 | continue; | ||
618 | |||
619 | if (status==0) { | ||
620 | cap=1; | ||
621 | printf("For err_sev=%d, err_struct=%d, struct_hier=%d: ", | ||
622 | err_sev, err_struct, struct_hier); | ||
623 | printf("capabilities 0x%lx\n", capabilities); | ||
624 | } | ||
625 | } | ||
626 | if (!cap) { | ||
627 | printf("No capabilities supported.\n"); | ||
628 | return 0; | ||
629 | } | ||
630 | |||
631 | return 0; | ||
632 | } | ||
633 | |||
634 | int err_inject(int cpu, char *path, err_type_info_t err_type_info, | ||
635 | err_struct_info_t err_struct_info, | ||
636 | err_data_buffer_t err_data_buffer) | ||
637 | { | ||
638 | int status; | ||
639 | char fn[MAX_FN_SIZE]; | ||
640 | |||
641 | log_info(cpu, "err_type_info=%lx, err_struct_info=%lx, ", | ||
642 | err_type_info.err_type_info, | ||
643 | err_struct_info.err_struct_info); | ||
644 | log_info(cpu,"err_data_buffer=[%lx,%lx,%lx]\n", | ||
645 | err_data_buffer.err_data_buffer[0], | ||
646 | err_data_buffer.err_data_buffer[1], | ||
647 | err_data_buffer.err_data_buffer[2]); | ||
648 | sprintf(fn, "%s/err_type_info", path); | ||
649 | wr(fn, err_type_info.err_type_info); | ||
650 | sprintf(fn, "%s/err_struct_info", path); | ||
651 | wr(fn, err_struct_info.err_struct_info); | ||
652 | sprintf(fn, "%s/err_data_buffer", path); | ||
653 | wr_multi(fn, err_data_buffer.err_data_buffer, ERR_DATA_BUFFER_SIZE); | ||
654 | |||
655 | // Fire pal_mc_error_inject procedure. | ||
656 | sprintf(fn, "%s/call_start", path); | ||
657 | wr(fn,mode); | ||
658 | |||
659 | if (rd_status(path, &status)<0) { | ||
660 | vbprintf("fail: read status\n"); | ||
661 | return -100; | ||
662 | } | ||
663 | |||
664 | if (status!=0) { | ||
665 | log_info(cpu, "fail: status=%d\n", status); | ||
666 | return status; | ||
667 | } | ||
668 | |||
669 | return status; | ||
670 | } | ||
671 | |||
672 | static int construct_data_buf(char *path, err_type_info_t err_type_info, | ||
673 | err_struct_info_t err_struct_info, | ||
674 | err_data_buffer_t *err_data_buffer, | ||
675 | void *va1) | ||
676 | { | ||
677 | char fn[MAX_FN_SIZE]; | ||
678 | u64 virt_addr=0, phys_addr=0; | ||
679 | |||
680 | vbprintf("va1=%lx\n", (u64)va1); | ||
681 | memset(&err_data_buffer->err_data_buffer_cache, 0, ERR_DATA_BUFFER_SIZE*8); | ||
682 | |||
683 | switch (err_type_info.err_type_info_u.err_struct) { | ||
684 | case 1: // Cache | ||
685 | switch (err_struct_info.err_struct_info_cache.cl_id) { | ||
686 | case 1: //Virtual addr | ||
687 | err_data_buffer->err_data_buffer_cache.inj_addr=(u64)va1; | ||
688 | break; | ||
689 | case 2: //Phys addr | ||
690 | sprintf(fn, "%s/virtual_to_phys", path); | ||
691 | virt_addr=(u64)va1; | ||
692 | if (wr(fn,virt_addr)<0) | ||
693 | return -1; | ||
694 | rd(fn, &phys_addr); | ||
695 | err_data_buffer->err_data_buffer_cache.inj_addr=phys_addr; | ||
696 | break; | ||
697 | default: | ||
698 | printf("Not supported cl_id\n"); | ||
699 | break; | ||
700 | } | ||
701 | break; | ||
702 | case 2: // TLB | ||
703 | break; | ||
704 | case 3: // Register file | ||
705 | break; | ||
706 | case 4: // Bus/system interconnect | ||
707 | default: | ||
708 | printf("Not supported err_struct\n"); | ||
709 | break; | ||
710 | } | ||
711 | |||
712 | return 0; | ||
713 | } | ||
714 | |||
715 | typedef struct { | ||
716 | u64 cpu; | ||
717 | u64 loop; | ||
718 | u64 interval; | ||
719 | u64 err_type_info; | ||
720 | u64 err_struct_info; | ||
721 | u64 err_data_buffer[ERR_DATA_BUFFER_SIZE]; | ||
722 | } parameters_t; | ||
723 | |||
724 | parameters_t line_para; | ||
725 | int para; | ||
726 | |||
727 | static int empty_data_buffer(u64 *err_data_buffer) | ||
728 | { | ||
729 | int empty=1; | ||
730 | int i; | ||
731 | |||
732 | for (i=0;i<ERR_DATA_BUFFER_SIZE; i++) | ||
733 | if (err_data_buffer[i]!=-1) | ||
734 | empty=0; | ||
735 | |||
736 | return empty; | ||
737 | } | ||
738 | |||
739 | int err_inj() | ||
740 | { | ||
741 | err_type_info_t err_type_info; | ||
742 | err_struct_info_t err_struct_info; | ||
743 | err_data_buffer_t err_data_buffer; | ||
744 | int count; | ||
745 | FILE *fp; | ||
746 | unsigned long cpu, loop, interval, err_type_info_conf, err_struct_info_conf; | ||
747 | u64 err_data_buffer_conf[ERR_DATA_BUFFER_SIZE]; | ||
748 | int num; | ||
749 | int i; | ||
750 | char path[MAX_FN_SIZE]; | ||
751 | parameters_t parameters[MAX_TASK_NUM]={}; | ||
752 | pid_t child_pid[MAX_TASK_NUM]; | ||
753 | time_t current_time; | ||
754 | int status; | ||
755 | |||
756 | if (!para) { | ||
757 | fp=fopen("err.conf", "r"); | ||
758 | if (fp==NULL) { | ||
759 | perror("Error open err.conf"); | ||
760 | return -1; | ||
761 | } | ||
762 | |||
763 | num=0; | ||
764 | while (!feof(fp)) { | ||
765 | char buf[256]; | ||
766 | memset(buf,0,256); | ||
767 | fgets(buf, 256, fp); | ||
768 | count=sscanf(buf, "%lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx\n", | ||
769 | &cpu, &loop, &interval,&err_type_info_conf, | ||
770 | &err_struct_info_conf, | ||
771 | &err_data_buffer_conf[0], | ||
772 | &err_data_buffer_conf[1], | ||
773 | &err_data_buffer_conf[2]); | ||
774 | if (count!=PARA_FIELD_NUM+3) { | ||
775 | err_data_buffer_conf[0]=-1; | ||
776 | err_data_buffer_conf[1]=-1; | ||
777 | err_data_buffer_conf[2]=-1; | ||
778 | count=sscanf(buf, "%lx, %lx, %lx, %lx, %lx\n", | ||
779 | &cpu, &loop, &interval,&err_type_info_conf, | ||
780 | &err_struct_info_conf); | ||
781 | if (count!=PARA_FIELD_NUM) | ||
782 | continue; | ||
783 | } | ||
784 | |||
785 | parameters[num].cpu=cpu; | ||
786 | parameters[num].loop=loop; | ||
787 | parameters[num].interval= interval>MIN_INTERVAL | ||
788 | ?interval:MIN_INTERVAL; | ||
789 | parameters[num].err_type_info=err_type_info_conf; | ||
790 | parameters[num].err_struct_info=err_struct_info_conf; | ||
791 | memcpy(parameters[num++].err_data_buffer, | ||
792 | err_data_buffer_conf,ERR_DATA_BUFFER_SIZE*8) ; | ||
793 | |||
794 | if (num>=MAX_TASK_NUM) | ||
795 | break; | ||
796 | } | ||
797 | } | ||
798 | else { | ||
799 | parameters[0].cpu=line_para.cpu; | ||
800 | parameters[0].loop=line_para.loop; | ||
801 | parameters[0].interval= line_para.interval>MIN_INTERVAL | ||
802 | ?line_para.interval:MIN_INTERVAL; | ||
803 | parameters[0].err_type_info=line_para.err_type_info; | ||
804 | parameters[0].err_struct_info=line_para.err_struct_info; | ||
805 | memcpy(parameters[0].err_data_buffer, | ||
806 | line_para.err_data_buffer,ERR_DATA_BUFFER_SIZE*8) ; | ||
807 | |||
808 | num=1; | ||
809 | } | ||
810 | |||
811 | /* Create semaphore: If one_lock, one semaphore for all processors. | ||
812 | Otherwise, one sempaphore for each processor. */ | ||
813 | if (one_lock) { | ||
814 | if (create_sem(0)) { | ||
815 | printf("Can not create semaphore...exit\n"); | ||
816 | free_sem(0); | ||
817 | return -1; | ||
818 | } | ||
819 | } | ||
820 | else { | ||
821 | for (i=0;i<num;i++) { | ||
822 | if (create_sem(parameters[i].cpu)) { | ||
823 | printf("Can not create semaphore for cpu%d...exit\n",i); | ||
824 | free_sem(parameters[num].cpu); | ||
825 | return -1; | ||
826 | } | ||
827 | } | ||
828 | } | ||
829 | |||
830 | /* Create a shm segment which will be used to inject/consume errors on.*/ | ||
831 | if (create_shm()==-1) { | ||
832 | printf("Error to create shm...exit\n"); | ||
833 | return -1; | ||
834 | } | ||
835 | |||
836 | for (i=0;i<num;i++) { | ||
837 | pid_t pid; | ||
838 | |||
839 | current_time=time(NULL); | ||
840 | log_info(parameters[i].cpu, "\nBegine at %s", ctime(¤t_time)); | ||
841 | log_info(parameters[i].cpu, "Configurations:\n"); | ||
842 | log_info(parameters[i].cpu,"On cpu%ld: loop=%lx, interval=%lx(s)", | ||
843 | parameters[i].cpu, | ||
844 | parameters[i].loop, | ||
845 | parameters[i].interval); | ||
846 | log_info(parameters[i].cpu," err_type_info=%lx,err_struct_info=%lx\n", | ||
847 | parameters[i].err_type_info, | ||
848 | parameters[i].err_struct_info); | ||
849 | |||
850 | sprintf(path, PATH_FORMAT, (int)parameters[i].cpu); | ||
851 | err_type_info.err_type_info=parameters[i].err_type_info; | ||
852 | err_struct_info.err_struct_info=parameters[i].err_struct_info; | ||
853 | memcpy(err_data_buffer.err_data_buffer, | ||
854 | parameters[i].err_data_buffer, | ||
855 | ERR_DATA_BUFFER_SIZE*8); | ||
856 | |||
857 | pid=fork(); | ||
858 | if (pid==0) { | ||
859 | unsigned long mask[MASK_SIZE]; | ||
860 | int j, k; | ||
861 | |||
862 | void *va1, *va2; | ||
863 | |||
864 | /* Allocate two memory areas va1 and va2 in shm */ | ||
865 | va1=shmaddr+parameters[i].cpu*PAGE_SIZE; | ||
866 | va2=shmaddr+parameters[i].cpu*PAGE_SIZE+PAGE_SIZE; | ||
867 | |||
868 | vbprintf("va1=%lx, va2=%lx\n", (u64)va1, (u64)va2); | ||
869 | memset(va1, 0x1, PAGE_SIZE); | ||
870 | memset(va2, 0x2, PAGE_SIZE); | ||
871 | |||
872 | if (empty_data_buffer(err_data_buffer.err_data_buffer)) | ||
873 | /* If not specified yet, construct data buffer | ||
874 | * with va1 | ||
875 | */ | ||
876 | construct_data_buf(path, err_type_info, | ||
877 | err_struct_info, &err_data_buffer,va1); | ||
878 | |||
879 | for (j=0;j<MASK_SIZE;j++) | ||
880 | mask[j]=0; | ||
881 | |||
882 | cpu=parameters[i].cpu; | ||
883 | k = cpu%64; | ||
884 | j = cpu/64; | ||
885 | mask[j]=1<<k; | ||
886 | |||
887 | if (sched_setaffinity(0, MASK_SIZE*8, mask)==-1) { | ||
888 | perror("Error sched_setaffinity:"); | ||
889 | return -1; | ||
890 | } | ||
891 | |||
892 | for (j=0; j<parameters[i].loop; j++) { | ||
893 | log_info(parameters[i].cpu,"Injection "); | ||
894 | log_info(parameters[i].cpu,"on cpu%ld: #%d/%ld ", | ||
895 | |||
896 | parameters[i].cpu,j+1, parameters[i].loop); | ||
897 | |||
898 | /* Hold the lock */ | ||
899 | if (one_lock) | ||
900 | lock(0); | ||
901 | else | ||
902 | /* Hold lock on this cpu */ | ||
903 | lock(parameters[i].cpu); | ||
904 | |||
905 | if ((status=err_inject(parameters[i].cpu, | ||
906 | path, err_type_info, | ||
907 | err_struct_info, err_data_buffer)) | ||
908 | ==0) { | ||
909 | /* consume the error for "inject only"*/ | ||
910 | memcpy(va2, va1, PAGE_SIZE); | ||
911 | memcpy(va1, va2, PAGE_SIZE); | ||
912 | log_info(parameters[i].cpu, | ||
913 | "successful\n"); | ||
914 | } | ||
915 | else { | ||
916 | log_info(parameters[i].cpu,"fail:"); | ||
917 | log_info(parameters[i].cpu, | ||
918 | "status=%d\n", status); | ||
919 | unlock(parameters[i].cpu); | ||
920 | break; | ||
921 | } | ||
922 | if (one_lock) | ||
923 | /* Release the lock */ | ||
924 | unlock(0); | ||
925 | /* Release lock on this cpu */ | ||
926 | else | ||
927 | unlock(parameters[i].cpu); | ||
928 | |||
929 | if (j < parameters[i].loop-1) | ||
930 | sleep(parameters[i].interval); | ||
931 | } | ||
932 | current_time=time(NULL); | ||
933 | log_info(parameters[i].cpu, "Done at %s", ctime(¤t_time)); | ||
934 | return 0; | ||
935 | } | ||
936 | else if (pid<0) { | ||
937 | perror("Error fork:"); | ||
938 | continue; | ||
939 | } | ||
940 | child_pid[i]=pid; | ||
941 | } | ||
942 | for (i=0;i<num;i++) | ||
943 | waitpid(child_pid[i], NULL, 0); | ||
944 | |||
945 | if (one_lock) | ||
946 | free_sem(0); | ||
947 | else | ||
948 | for (i=0;i<num;i++) | ||
949 | free_sem(parameters[i].cpu); | ||
950 | |||
951 | printf("All done.\n"); | ||
952 | |||
953 | return 0; | ||
954 | } | ||
955 | |||
956 | void help() | ||
957 | { | ||
958 | printf("err_inject_tool:\n"); | ||
959 | printf("\t-q: query all capabilities. default: off\n"); | ||
960 | printf("\t-m: procedure mode. 1: physical 2: virtual. default: 1\n"); | ||
961 | printf("\t-i: inject errors. default: off\n"); | ||
962 | printf("\t-l: one lock per cpu. default: one lock for all\n"); | ||
963 | printf("\t-e: error parameters:\n"); | ||
964 | printf("\t\tcpu,loop,interval,err_type_info,err_struct_info[,err_data_buffer[0],err_data_buffer[1],err_data_buffer[2]]\n"); | ||
965 | printf("\t\t cpu: logical cpu number the error will be inject in.\n"); | ||
966 | printf("\t\t loop: times the error will be injected.\n"); | ||
967 | printf("\t\t interval: In second. every so often one error is injected.\n"); | ||
968 | printf("\t\t err_type_info, err_struct_info: PAL parameters.\n"); | ||
969 | printf("\t\t err_data_buffer: PAL parameter. Optional. If not present,\n"); | ||
970 | printf("\t\t it's constructed by tool automatically. Be\n"); | ||
971 | printf("\t\t careful to provide err_data_buffer and make\n"); | ||
972 | printf("\t\t sure it's working with the environment.\n"); | ||
973 | printf("\t Note:no space between error parameters.\n"); | ||
974 | printf("\t default: Take error parameters from err.conf instead of command line.\n"); | ||
975 | printf("\t-v: verbose. default: off\n"); | ||
976 | printf("\t-h: help\n\n"); | ||
977 | printf("The tool will take err.conf file as "); | ||
978 | printf("input to inject single or multiple errors "); | ||
979 | printf("on one or multiple cpus in parallel.\n"); | ||
980 | } | ||
981 | |||
982 | int main(int argc, char **argv) | ||
983 | { | ||
984 | char c; | ||
985 | int do_err_inj=0; | ||
986 | int do_query_all=0; | ||
987 | int count; | ||
988 | u32 m; | ||
989 | |||
990 | /* Default one lock for all cpu's */ | ||
991 | one_lock=1; | ||
992 | while ((c = getopt(argc, argv, "m:iqvhle:")) != EOF) | ||
993 | switch (c) { | ||
994 | case 'm': /* Procedure mode. 1: phys 2: virt */ | ||
995 | count=sscanf(optarg, "%x", &m); | ||
996 | if (count!=1 || (m!=1 && m!=2)) { | ||
997 | printf("Wrong mode number.\n"); | ||
998 | help(); | ||
999 | return -1; | ||
1000 | } | ||
1001 | mode=m; | ||
1002 | break; | ||
1003 | case 'i': /* Inject errors */ | ||
1004 | do_err_inj=1; | ||
1005 | break; | ||
1006 | case 'q': /* Query */ | ||
1007 | do_query_all=1; | ||
1008 | break; | ||
1009 | case 'v': /* Verbose */ | ||
1010 | verbose=1; | ||
1011 | break; | ||
1012 | case 'l': /* One lock per cpu */ | ||
1013 | one_lock=0; | ||
1014 | break; | ||
1015 | case 'e': /* error arguments */ | ||
1016 | /* Take parameters: | ||
1017 | * #cpu, loop, interval, err_type_info, err_struct_info[, err_data_buffer] | ||
1018 | * err_data_buffer is optional. Recommend not to specify | ||
1019 | * err_data_buffer. Better to use tool to generate it. | ||
1020 | */ | ||
1021 | count=sscanf(optarg, | ||
1022 | "%lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx\n", | ||
1023 | &line_para.cpu, | ||
1024 | &line_para.loop, | ||
1025 | &line_para.interval, | ||
1026 | &line_para.err_type_info, | ||
1027 | &line_para.err_struct_info, | ||
1028 | &line_para.err_data_buffer[0], | ||
1029 | &line_para.err_data_buffer[1], | ||
1030 | &line_para.err_data_buffer[2]); | ||
1031 | if (count!=PARA_FIELD_NUM+3) { | ||
1032 | line_para.err_data_buffer[0]=-1, | ||
1033 | line_para.err_data_buffer[1]=-1, | ||
1034 | line_para.err_data_buffer[2]=-1; | ||
1035 | count=sscanf(optarg, "%lx, %lx, %lx, %lx, %lx\n", | ||
1036 | &line_para.cpu, | ||
1037 | &line_para.loop, | ||
1038 | &line_para.interval, | ||
1039 | &line_para.err_type_info, | ||
1040 | &line_para.err_struct_info); | ||
1041 | if (count!=PARA_FIELD_NUM) { | ||
1042 | printf("Wrong error arguments.\n"); | ||
1043 | help(); | ||
1044 | return -1; | ||
1045 | } | ||
1046 | } | ||
1047 | para=1; | ||
1048 | break; | ||
1049 | continue; | ||
1050 | break; | ||
1051 | case 'h': | ||
1052 | help(); | ||
1053 | return 0; | ||
1054 | default: | ||
1055 | break; | ||
1056 | } | ||
1057 | |||
1058 | if (do_query_all) | ||
1059 | query_all_capabilities(); | ||
1060 | if (do_err_inj) | ||
1061 | err_inj(); | ||
1062 | |||
1063 | if (!do_query_all && !do_err_inj) | ||
1064 | help(); | ||
1065 | |||
1066 | return 0; | ||
1067 | } | ||
1068 | |||