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0e8a8c8f MA |
1 | /* |
2 | * Hard disk geometry test cases. | |
3 | * | |
4 | * Copyright (c) 2012 Red Hat Inc. | |
5 | * | |
6 | * Authors: | |
7 | * Markus Armbruster <armbru@redhat.com>, | |
8 | * | |
9 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
10 | * See the COPYING file in the top-level directory. | |
11 | */ | |
12 | ||
13 | /* | |
14 | * Covers only IDE and tests only CMOS contents. Better than nothing. | |
15 | * Improvements welcome. | |
16 | */ | |
17 | ||
681c28a3 | 18 | #include "qemu/osdep.h" |
0e8a8c8f MA |
19 | #include "qemu-common.h" |
20 | #include "libqtest.h" | |
21 | ||
0e8a8c8f MA |
22 | static char *create_test_img(int secs) |
23 | { | |
24 | char *template = strdup("/tmp/qtest.XXXXXX"); | |
25 | int fd, ret; | |
26 | ||
27 | fd = mkstemp(template); | |
28 | g_assert(fd >= 0); | |
29 | ret = ftruncate(fd, (off_t)secs * 512); | |
30 | g_assert(ret == 0); | |
31 | close(fd); | |
32 | return template; | |
33 | } | |
34 | ||
35 | typedef struct { | |
36 | int cyls, heads, secs, trans; | |
37 | } CHST; | |
38 | ||
39 | typedef enum { | |
40 | mbr_blank, mbr_lba, mbr_chs, | |
41 | mbr_last | |
42 | } MBRcontents; | |
43 | ||
44 | typedef enum { | |
45 | /* order is relevant */ | |
46 | backend_small, backend_large, backend_empty, | |
47 | backend_last | |
48 | } Backend; | |
49 | ||
50 | static const int img_secs[backend_last] = { | |
51 | [backend_small] = 61440, | |
52 | [backend_large] = 8388608, | |
53 | [backend_empty] = -1, | |
54 | }; | |
55 | ||
56 | static const CHST hd_chst[backend_last][mbr_last] = { | |
57 | [backend_small] = { | |
58 | [mbr_blank] = { 60, 16, 63, 0 }, | |
59 | [mbr_lba] = { 60, 16, 63, 2 }, | |
60 | [mbr_chs] = { 60, 16, 63, 0 } | |
61 | }, | |
62 | [backend_large] = { | |
63 | [mbr_blank] = { 8322, 16, 63, 1 }, | |
64 | [mbr_lba] = { 8322, 16, 63, 1 }, | |
65 | [mbr_chs] = { 8322, 16, 63, 0 } | |
66 | }, | |
67 | }; | |
68 | ||
69 | static const char *img_file_name[backend_last]; | |
70 | ||
71 | static const CHST *cur_ide[4]; | |
72 | ||
73 | static bool is_hd(const CHST *expected_chst) | |
74 | { | |
75 | return expected_chst && expected_chst->cyls; | |
76 | } | |
77 | ||
78 | static void test_cmos_byte(int reg, int expected) | |
79 | { | |
80 | enum { cmos_base = 0x70 }; | |
81 | int actual; | |
82 | ||
83 | outb(cmos_base + 0, reg); | |
84 | actual = inb(cmos_base + 1); | |
85 | g_assert(actual == expected); | |
86 | } | |
87 | ||
88 | static void test_cmos_bytes(int reg0, int n, uint8_t expected[]) | |
89 | { | |
90 | int i; | |
91 | ||
92 | for (i = 0; i < 9; i++) { | |
93 | test_cmos_byte(reg0 + i, expected[i]); | |
94 | } | |
95 | } | |
96 | ||
97 | static void test_cmos_disk_data(void) | |
98 | { | |
99 | test_cmos_byte(0x12, | |
100 | (is_hd(cur_ide[0]) ? 0xf0 : 0) | | |
101 | (is_hd(cur_ide[1]) ? 0x0f : 0)); | |
102 | } | |
103 | ||
104 | static void test_cmos_drive_cyl(int reg0, const CHST *expected_chst) | |
105 | { | |
106 | if (is_hd(expected_chst)) { | |
107 | int c = expected_chst->cyls; | |
108 | int h = expected_chst->heads; | |
109 | int s = expected_chst->secs; | |
110 | uint8_t expected_bytes[9] = { | |
111 | c & 0xff, c >> 8, h, 0xff, 0xff, 0xc0 | ((h > 8) << 3), | |
112 | c & 0xff, c >> 8, s | |
113 | }; | |
114 | test_cmos_bytes(reg0, 9, expected_bytes); | |
115 | } else { | |
116 | int i; | |
117 | ||
118 | for (i = 0; i < 9; i++) { | |
119 | test_cmos_byte(reg0 + i, 0); | |
120 | } | |
121 | } | |
122 | } | |
123 | ||
124 | static void test_cmos_drive1(void) | |
125 | { | |
126 | test_cmos_byte(0x19, is_hd(cur_ide[0]) ? 47 : 0); | |
127 | test_cmos_drive_cyl(0x1b, cur_ide[0]); | |
128 | } | |
129 | ||
130 | static void test_cmos_drive2(void) | |
131 | { | |
132 | test_cmos_byte(0x1a, is_hd(cur_ide[1]) ? 47 : 0); | |
133 | test_cmos_drive_cyl(0x24, cur_ide[1]); | |
134 | } | |
135 | ||
136 | static void test_cmos_disktransflag(void) | |
137 | { | |
138 | int val, i; | |
139 | ||
140 | val = 0; | |
141 | for (i = 0; i < ARRAY_SIZE(cur_ide); i++) { | |
142 | if (is_hd(cur_ide[i])) { | |
143 | val |= cur_ide[i]->trans << (2 * i); | |
144 | } | |
145 | } | |
146 | test_cmos_byte(0x39, val); | |
147 | } | |
148 | ||
149 | static void test_cmos(void) | |
150 | { | |
151 | test_cmos_disk_data(); | |
152 | test_cmos_drive1(); | |
153 | test_cmos_drive2(); | |
154 | test_cmos_disktransflag(); | |
155 | } | |
156 | ||
157 | static int append_arg(int argc, char *argv[], int argv_sz, char *arg) | |
158 | { | |
159 | g_assert(argc + 1 < argv_sz); | |
160 | argv[argc++] = arg; | |
161 | argv[argc] = NULL; | |
162 | return argc; | |
163 | } | |
164 | ||
165 | static int setup_common(char *argv[], int argv_sz) | |
166 | { | |
167 | memset(cur_ide, 0, sizeof(cur_ide)); | |
168 | return append_arg(0, argv, argv_sz, | |
2ad645d2 | 169 | g_strdup("-nodefaults")); |
0e8a8c8f MA |
170 | } |
171 | ||
172 | static void setup_mbr(int img_idx, MBRcontents mbr) | |
173 | { | |
174 | static const uint8_t part_lba[16] = { | |
175 | /* chs 0,1,1 (lba 63) to chs 0,127,63 (8001 sectors) */ | |
176 | 0x80, 1, 1, 0, 6, 127, 63, 0, 63, 0, 0, 0, 0x41, 0x1F, 0, 0, | |
177 | }; | |
178 | static const uint8_t part_chs[16] = { | |
179 | /* chs 0,1,1 (lba 63) to chs 7,15,63 (8001 sectors) */ | |
180 | 0x80, 1, 1, 0, 6, 15, 63, 7, 63, 0, 0, 0, 0x41, 0x1F, 0, 0, | |
181 | }; | |
182 | uint8_t buf[512]; | |
183 | int fd, ret; | |
184 | ||
185 | memset(buf, 0, sizeof(buf)); | |
186 | ||
187 | if (mbr != mbr_blank) { | |
188 | buf[0x1fe] = 0x55; | |
189 | buf[0x1ff] = 0xAA; | |
190 | memcpy(buf + 0x1BE, mbr == mbr_lba ? part_lba : part_chs, 16); | |
191 | } | |
192 | ||
193 | fd = open(img_file_name[img_idx], O_WRONLY); | |
194 | g_assert(fd >= 0); | |
195 | ret = write(fd, buf, sizeof(buf)); | |
196 | g_assert(ret == sizeof(buf)); | |
197 | close(fd); | |
198 | } | |
199 | ||
200 | static int setup_ide(int argc, char *argv[], int argv_sz, | |
201 | int ide_idx, const char *dev, int img_idx, | |
202 | MBRcontents mbr, const char *opts) | |
203 | { | |
204 | char *s1, *s2, *s3; | |
205 | ||
39c4ae94 | 206 | s1 = g_strdup_printf("-drive id=drive%d,if=%s", |
0e8a8c8f MA |
207 | ide_idx, dev ? "none" : "ide"); |
208 | s2 = dev ? g_strdup("") : g_strdup_printf(",index=%d", ide_idx); | |
209 | ||
210 | if (img_secs[img_idx] >= 0) { | |
211 | setup_mbr(img_idx, mbr); | |
39c4ae94 | 212 | s3 = g_strdup_printf(",format=raw,file=%s", img_file_name[img_idx]); |
0e8a8c8f MA |
213 | } else { |
214 | s3 = g_strdup(",media=cdrom"); | |
215 | } | |
216 | argc = append_arg(argc, argv, argv_sz, | |
217 | g_strdup_printf("%s%s%s%s", s1, s2, s3, opts)); | |
218 | g_free(s1); | |
219 | g_free(s2); | |
220 | g_free(s3); | |
221 | ||
222 | if (dev) { | |
223 | argc = append_arg(argc, argv, argv_sz, | |
224 | g_strdup_printf("-device %s,drive=drive%d," | |
225 | "bus=ide.%d,unit=%d", | |
226 | dev, ide_idx, | |
227 | ide_idx / 2, ide_idx % 2)); | |
228 | } | |
229 | return argc; | |
230 | } | |
231 | ||
232 | /* | |
233 | * Test case: no IDE devices | |
234 | */ | |
235 | static void test_ide_none(void) | |
236 | { | |
237 | char *argv[256]; | |
238 | ||
239 | setup_common(argv, ARRAY_SIZE(argv)); | |
240 | qtest_start(g_strjoinv(" ", argv)); | |
241 | test_cmos(); | |
1d9358e6 | 242 | qtest_end(); |
0e8a8c8f MA |
243 | } |
244 | ||
245 | static void test_ide_mbr(bool use_device, MBRcontents mbr) | |
246 | { | |
247 | char *argv[256]; | |
248 | int argc; | |
249 | Backend i; | |
250 | const char *dev; | |
251 | ||
252 | argc = setup_common(argv, ARRAY_SIZE(argv)); | |
253 | for (i = 0; i < backend_last; i++) { | |
254 | cur_ide[i] = &hd_chst[i][mbr]; | |
255 | dev = use_device ? (is_hd(cur_ide[i]) ? "ide-hd" : "ide-cd") : NULL; | |
256 | argc = setup_ide(argc, argv, ARRAY_SIZE(argv), i, dev, i, mbr, ""); | |
257 | } | |
258 | qtest_start(g_strjoinv(" ", argv)); | |
259 | test_cmos(); | |
1d9358e6 | 260 | qtest_end(); |
0e8a8c8f MA |
261 | } |
262 | ||
263 | /* | |
264 | * Test case: IDE devices (if=ide) with blank MBRs | |
265 | */ | |
266 | static void test_ide_drive_mbr_blank(void) | |
267 | { | |
268 | test_ide_mbr(false, mbr_blank); | |
269 | } | |
270 | ||
271 | /* | |
272 | * Test case: IDE devices (if=ide) with MBRs indicating LBA is in use | |
273 | */ | |
274 | static void test_ide_drive_mbr_lba(void) | |
275 | { | |
276 | test_ide_mbr(false, mbr_lba); | |
277 | } | |
278 | ||
279 | /* | |
280 | * Test case: IDE devices (if=ide) with MBRs indicating CHS is in use | |
281 | */ | |
282 | static void test_ide_drive_mbr_chs(void) | |
283 | { | |
284 | test_ide_mbr(false, mbr_chs); | |
285 | } | |
286 | ||
287 | /* | |
288 | * Test case: IDE devices (if=none) with blank MBRs | |
289 | */ | |
290 | static void test_ide_device_mbr_blank(void) | |
291 | { | |
292 | test_ide_mbr(true, mbr_blank); | |
293 | } | |
294 | ||
295 | /* | |
296 | * Test case: IDE devices (if=none) with MBRs indicating LBA is in use | |
297 | */ | |
298 | static void test_ide_device_mbr_lba(void) | |
299 | { | |
300 | test_ide_mbr(true, mbr_lba); | |
301 | } | |
302 | ||
303 | /* | |
304 | * Test case: IDE devices (if=none) with MBRs indicating CHS is in use | |
305 | */ | |
306 | static void test_ide_device_mbr_chs(void) | |
307 | { | |
308 | test_ide_mbr(true, mbr_chs); | |
309 | } | |
310 | ||
311 | static void test_ide_drive_user(const char *dev, bool trans) | |
312 | { | |
313 | char *argv[256], *opts; | |
314 | int argc; | |
315 | int secs = img_secs[backend_small]; | |
316 | const CHST expected_chst = { secs / (4 * 32) , 4, 32, trans }; | |
317 | ||
318 | argc = setup_common(argv, ARRAY_SIZE(argv)); | |
856dcba2 MA |
319 | opts = g_strdup_printf("%s,%s%scyls=%d,heads=%d,secs=%d", |
320 | dev ?: "", | |
321 | trans && dev ? "bios-chs-" : "", | |
322 | trans ? "trans=lba," : "", | |
0e8a8c8f | 323 | expected_chst.cyls, expected_chst.heads, |
856dcba2 | 324 | expected_chst.secs); |
0e8a8c8f MA |
325 | cur_ide[0] = &expected_chst; |
326 | argc = setup_ide(argc, argv, ARRAY_SIZE(argv), | |
856dcba2 MA |
327 | 0, dev ? opts : NULL, backend_small, mbr_chs, |
328 | dev ? "" : opts); | |
0e8a8c8f MA |
329 | g_free(opts); |
330 | qtest_start(g_strjoinv(" ", argv)); | |
331 | test_cmos(); | |
1d9358e6 | 332 | qtest_end(); |
0e8a8c8f MA |
333 | } |
334 | ||
335 | /* | |
336 | * Test case: IDE device (if=ide) with explicit CHS | |
337 | */ | |
338 | static void test_ide_drive_user_chs(void) | |
339 | { | |
340 | test_ide_drive_user(NULL, false); | |
341 | } | |
342 | ||
343 | /* | |
344 | * Test case: IDE device (if=ide) with explicit CHS and translation | |
345 | */ | |
346 | static void test_ide_drive_user_chst(void) | |
347 | { | |
348 | test_ide_drive_user(NULL, true); | |
349 | } | |
350 | ||
351 | /* | |
352 | * Test case: IDE device (if=none) with explicit CHS | |
353 | */ | |
354 | static void test_ide_device_user_chs(void) | |
355 | { | |
356 | test_ide_drive_user("ide-hd", false); | |
357 | } | |
358 | ||
359 | /* | |
360 | * Test case: IDE device (if=none) with explicit CHS and translation | |
361 | */ | |
362 | static void test_ide_device_user_chst(void) | |
363 | { | |
364 | test_ide_drive_user("ide-hd", true); | |
365 | } | |
366 | ||
4e4e6e31 MA |
367 | /* |
368 | * Test case: IDE devices (if=ide), but use index=0 for CD-ROM | |
369 | */ | |
370 | static void test_ide_drive_cd_0(void) | |
371 | { | |
372 | char *argv[256]; | |
373 | int argc, ide_idx; | |
374 | Backend i; | |
375 | ||
376 | argc = setup_common(argv, ARRAY_SIZE(argv)); | |
377 | for (i = 0; i <= backend_empty; i++) { | |
378 | ide_idx = backend_empty - i; | |
379 | cur_ide[ide_idx] = &hd_chst[i][mbr_blank]; | |
380 | argc = setup_ide(argc, argv, ARRAY_SIZE(argv), | |
381 | ide_idx, NULL, i, mbr_blank, ""); | |
382 | } | |
383 | qtest_start(g_strjoinv(" ", argv)); | |
384 | test_cmos(); | |
1d9358e6 | 385 | qtest_end(); |
4e4e6e31 MA |
386 | } |
387 | ||
0e8a8c8f MA |
388 | int main(int argc, char **argv) |
389 | { | |
390 | Backend i; | |
391 | int ret; | |
392 | ||
393 | g_test_init(&argc, &argv, NULL); | |
394 | ||
395 | for (i = 0; i < backend_last; i++) { | |
396 | if (img_secs[i] >= 0) { | |
397 | img_file_name[i] = create_test_img(img_secs[i]); | |
398 | } else { | |
399 | img_file_name[i] = NULL; | |
400 | } | |
401 | } | |
402 | ||
403 | qtest_add_func("hd-geo/ide/none", test_ide_none); | |
404 | qtest_add_func("hd-geo/ide/drive/mbr/blank", test_ide_drive_mbr_blank); | |
405 | qtest_add_func("hd-geo/ide/drive/mbr/lba", test_ide_drive_mbr_lba); | |
406 | qtest_add_func("hd-geo/ide/drive/mbr/chs", test_ide_drive_mbr_chs); | |
407 | qtest_add_func("hd-geo/ide/drive/user/chs", test_ide_drive_user_chs); | |
408 | qtest_add_func("hd-geo/ide/drive/user/chst", test_ide_drive_user_chst); | |
4e4e6e31 | 409 | qtest_add_func("hd-geo/ide/drive/cd_0", test_ide_drive_cd_0); |
0e8a8c8f MA |
410 | qtest_add_func("hd-geo/ide/device/mbr/blank", test_ide_device_mbr_blank); |
411 | qtest_add_func("hd-geo/ide/device/mbr/lba", test_ide_device_mbr_lba); | |
412 | qtest_add_func("hd-geo/ide/device/mbr/chs", test_ide_device_mbr_chs); | |
413 | qtest_add_func("hd-geo/ide/device/user/chs", test_ide_device_user_chs); | |
414 | qtest_add_func("hd-geo/ide/device/user/chst", test_ide_device_user_chst); | |
415 | ||
416 | ret = g_test_run(); | |
417 | ||
418 | for (i = 0; i < backend_last; i++) { | |
0813cbf9 PM |
419 | if (img_file_name[i]) { |
420 | unlink(img_file_name[i]); | |
421 | } | |
0e8a8c8f MA |
422 | } |
423 | ||
424 | return ret; | |
425 | } |