1 /*
2 * Copyright © 2017 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23 #include "config.h"
24 #include "igt.h"
25 #include <stdio.h>
26 #include <sys/types.h>
27 #include <sys/stat.h>
28 #include <fcntl.h>
29 #include <libgen.h>
30 #include <unistd.h>
31 #include <linux/limits.h>
32
33 #define TOOLS "../tools/"
34
35 struct line_check {
36 int found;
37 const char *substr;
38 };
39
40 /**
41 * Our igt_log_buffer_inspect handler. Checks the output of the
42 * intel_l3_parity tool and increments line_check::found if a specific
43 * substring is found.
44 */
check_cmd_output(const char * line,void * data)45 static bool check_cmd_output(const char *line, void *data)
46 {
47 struct line_check *check = data;
48
49 if (strstr(line, check->substr)) {
50 check->found++;
51 }
52
53 return false;
54 }
55
assert_cmd_success(int exec_return)56 static void assert_cmd_success(int exec_return)
57 {
58 igt_skip_on_f(exec_return == IGT_EXIT_SKIP,
59 "intel_l3_parity not supported\n");
60 igt_assert_eq(exec_return, IGT_EXIT_SUCCESS);
61 }
62
chdir_to_tools_dir(void)63 static bool chdir_to_tools_dir(void)
64 {
65 char path[PATH_MAX];
66
67 /* Try TOOLS relative to cwd */
68 if (chdir(TOOLS) == 0)
69 return true;
70
71 /* Try TOOLS and install dir relative to test binary */
72 if (readlink("/proc/self/exe", path, sizeof(path)) > 0)
73 chdir(dirname(path));
74
75 return chdir(TOOLS) == 0 || chdir("../../bin") == 0;
76 }
77
78 igt_main
79 {
80 igt_skip_on_simulation();
81
82 igt_fixture {
83 char *path;
84
85 igt_require_f(chdir_to_tools_dir(),
86 "Unable to determine the tools directory, expecting them in $cwd/" TOOLS " or $path/" TOOLS "\n");
87 path = get_current_dir_name();
88 igt_info("Using tools from %s\n", path);
89 free(path);
90 }
91
92 igt_subtest("sysfs_l3_parity") {
93 int exec_return;
94 struct line_check line;
95
96 igt_require(access("intel_l3_parity", X_OK) == 0);
97
98 /* Sanity check that l3 parity tool is usable: Enable
99 * row,bank,subbank 0,0,0.
100 *
101 * TODO: Better way to find intel_l3_parity. This path
102 * is relative to piglit's path, when run through
103 * piglit.
104 */
105 igt_system_cmd(exec_return,
106 "./intel_l3_parity -r 0 -b 0 "
107 "-s 0 -e");
108 assert_cmd_success(exec_return);
109
110 /* Disable row,bank,subbank 0,0,0. */
111 igt_system_cmd(exec_return,
112 "./intel_l3_parity -r 0 -b 0 "
113 "-s 0 -d");
114 assert_cmd_success(exec_return);
115
116 /* Check that disabling was successful */
117 igt_system_cmd(exec_return,
118 "./intel_l3_parity -l");
119 assert_cmd_success(exec_return);
120 line.substr = "Row 0, Bank 0, Subbank 0 is disabled";
121 line.found = 0;
122 igt_log_buffer_inspect(check_cmd_output, &line);
123 igt_assert_eq(line.found, 1);
124
125 /* Re-enable row,bank,subbank 0,0,0 */
126 igt_system_cmd(exec_return,
127 "./intel_l3_parity -r 0 -b 0 "
128 "-s 0 -e");
129 assert_cmd_success(exec_return);
130
131 /* Check that re-enabling was successful:
132 * intel_l3_parity -l should now not print that Row 0,
133 * Bank 0, Subbank 0 is disabled.
134 *
135 * The previously printed line is already in the log
136 * buffer so we check for count 1.
137 */
138 igt_system_cmd(exec_return,
139 "./intel_l3_parity -l");
140 assert_cmd_success(exec_return);
141 line.substr = "Row 0, Bank 0, Subbank 0 is disabled";
142 line.found = 0;
143 igt_log_buffer_inspect(check_cmd_output,
144 &line);
145 igt_assert_eq(line.found, 1);
146 }
147
148 igt_subtest("tools_test") {
149 igt_require(access("intel_reg", X_OK) == 0);
150
151 igt_assert_eq(igt_system_quiet("./intel_reg read 0x4030"),
152 IGT_EXIT_SUCCESS);
153
154 igt_assert_eq(igt_system_quiet("./intel_reg dump"),
155 IGT_EXIT_SUCCESS);
156 }
157 }
158