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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 | ||
18 | #include <glib.h> | |
19 | #include <stdlib.h> | |
20 | #include <string.h> | |
21 | #include <unistd.h> | |
22 | #include "qemu-common.h" | |
23 | #include "libqtest.h" | |
24 | ||
25 | static const char test_image[] = "/tmp/qtest.XXXXXX"; | |
26 | ||
27 | static char *create_test_img(int secs) | |
28 | { | |
29 | char *template = strdup("/tmp/qtest.XXXXXX"); | |
30 | int fd, ret; | |
31 | ||
32 | fd = mkstemp(template); | |
33 | g_assert(fd >= 0); | |
34 | ret = ftruncate(fd, (off_t)secs * 512); | |
35 | g_assert(ret == 0); | |
36 | close(fd); | |
37 | return template; | |
38 | } | |
39 | ||
40 | typedef struct { | |
41 | int cyls, heads, secs, trans; | |
42 | } CHST; | |
43 | ||
44 | typedef enum { | |
45 | mbr_blank, mbr_lba, mbr_chs, | |
46 | mbr_last | |
47 | } MBRcontents; | |
48 | ||
49 | typedef enum { | |
50 | /* order is relevant */ | |
51 | backend_small, backend_large, backend_empty, | |
52 | backend_last | |
53 | } Backend; | |
54 | ||
55 | static const int img_secs[backend_last] = { | |
56 | [backend_small] = 61440, | |
57 | [backend_large] = 8388608, | |
58 | [backend_empty] = -1, | |
59 | }; | |
60 | ||
61 | static const CHST hd_chst[backend_last][mbr_last] = { | |
62 | [backend_small] = { | |
63 | [mbr_blank] = { 60, 16, 63, 0 }, | |
64 | [mbr_lba] = { 60, 16, 63, 2 }, | |
65 | [mbr_chs] = { 60, 16, 63, 0 } | |
66 | }, | |
67 | [backend_large] = { | |
68 | [mbr_blank] = { 8322, 16, 63, 1 }, | |
69 | [mbr_lba] = { 8322, 16, 63, 1 }, | |
70 | [mbr_chs] = { 8322, 16, 63, 0 } | |
71 | }, | |
72 | }; | |
73 | ||
74 | static const char *img_file_name[backend_last]; | |
75 | ||
76 | static const CHST *cur_ide[4]; | |
77 | ||
78 | static bool is_hd(const CHST *expected_chst) | |
79 | { | |
80 | return expected_chst && expected_chst->cyls; | |
81 | } | |
82 | ||
83 | static void test_cmos_byte(int reg, int expected) | |
84 | { | |
85 | enum { cmos_base = 0x70 }; | |
86 | int actual; | |
87 | ||
88 | outb(cmos_base + 0, reg); | |
89 | actual = inb(cmos_base + 1); | |
90 | g_assert(actual == expected); | |
91 | } | |
92 | ||
93 | static void test_cmos_bytes(int reg0, int n, uint8_t expected[]) | |
94 | { | |
95 | int i; | |
96 | ||
97 | for (i = 0; i < 9; i++) { | |
98 | test_cmos_byte(reg0 + i, expected[i]); | |
99 | } | |
100 | } | |
101 | ||
102 | static void test_cmos_disk_data(void) | |
103 | { | |
104 | test_cmos_byte(0x12, | |
105 | (is_hd(cur_ide[0]) ? 0xf0 : 0) | | |
106 | (is_hd(cur_ide[1]) ? 0x0f : 0)); | |
107 | } | |
108 | ||
109 | static void test_cmos_drive_cyl(int reg0, const CHST *expected_chst) | |
110 | { | |
111 | if (is_hd(expected_chst)) { | |
112 | int c = expected_chst->cyls; | |
113 | int h = expected_chst->heads; | |
114 | int s = expected_chst->secs; | |
115 | uint8_t expected_bytes[9] = { | |
116 | c & 0xff, c >> 8, h, 0xff, 0xff, 0xc0 | ((h > 8) << 3), | |
117 | c & 0xff, c >> 8, s | |
118 | }; | |
119 | test_cmos_bytes(reg0, 9, expected_bytes); | |
120 | } else { | |
121 | int i; | |
122 | ||
123 | for (i = 0; i < 9; i++) { | |
124 | test_cmos_byte(reg0 + i, 0); | |
125 | } | |
126 | } | |
127 | } | |
128 | ||
129 | static void test_cmos_drive1(void) | |
130 | { | |
131 | test_cmos_byte(0x19, is_hd(cur_ide[0]) ? 47 : 0); | |
132 | test_cmos_drive_cyl(0x1b, cur_ide[0]); | |
133 | } | |
134 | ||
135 | static void test_cmos_drive2(void) | |
136 | { | |
137 | test_cmos_byte(0x1a, is_hd(cur_ide[1]) ? 47 : 0); | |
138 | test_cmos_drive_cyl(0x24, cur_ide[1]); | |
139 | } | |
140 | ||
141 | static void test_cmos_disktransflag(void) | |
142 | { | |
143 | int val, i; | |
144 | ||
145 | val = 0; | |
146 | for (i = 0; i < ARRAY_SIZE(cur_ide); i++) { | |
147 | if (is_hd(cur_ide[i])) { | |
148 | val |= cur_ide[i]->trans << (2 * i); | |
149 | } | |
150 | } | |
151 | test_cmos_byte(0x39, val); | |
152 | } | |
153 | ||
154 | static void test_cmos(void) | |
155 | { | |
156 | test_cmos_disk_data(); | |
157 | test_cmos_drive1(); | |
158 | test_cmos_drive2(); | |
159 | test_cmos_disktransflag(); | |
160 | } | |
161 | ||
162 | static int append_arg(int argc, char *argv[], int argv_sz, char *arg) | |
163 | { | |
164 | g_assert(argc + 1 < argv_sz); | |
165 | argv[argc++] = arg; | |
166 | argv[argc] = NULL; | |
167 | return argc; | |
168 | } | |
169 | ||
170 | static int setup_common(char *argv[], int argv_sz) | |
171 | { | |
172 | memset(cur_ide, 0, sizeof(cur_ide)); | |
173 | return append_arg(0, argv, argv_sz, | |
2ad645d2 | 174 | g_strdup("-nodefaults")); |
0e8a8c8f MA |
175 | } |
176 | ||
177 | static void setup_mbr(int img_idx, MBRcontents mbr) | |
178 | { | |
179 | static const uint8_t part_lba[16] = { | |
180 | /* chs 0,1,1 (lba 63) to chs 0,127,63 (8001 sectors) */ | |
181 | 0x80, 1, 1, 0, 6, 127, 63, 0, 63, 0, 0, 0, 0x41, 0x1F, 0, 0, | |
182 | }; | |
183 | static const uint8_t part_chs[16] = { | |
184 | /* chs 0,1,1 (lba 63) to chs 7,15,63 (8001 sectors) */ | |
185 | 0x80, 1, 1, 0, 6, 15, 63, 7, 63, 0, 0, 0, 0x41, 0x1F, 0, 0, | |
186 | }; | |
187 | uint8_t buf[512]; | |
188 | int fd, ret; | |
189 | ||
190 | memset(buf, 0, sizeof(buf)); | |
191 | ||
192 | if (mbr != mbr_blank) { | |
193 | buf[0x1fe] = 0x55; | |
194 | buf[0x1ff] = 0xAA; | |
195 | memcpy(buf + 0x1BE, mbr == mbr_lba ? part_lba : part_chs, 16); | |
196 | } | |
197 | ||
198 | fd = open(img_file_name[img_idx], O_WRONLY); | |
199 | g_assert(fd >= 0); | |
200 | ret = write(fd, buf, sizeof(buf)); | |
201 | g_assert(ret == sizeof(buf)); | |
202 | close(fd); | |
203 | } | |
204 | ||
205 | static int setup_ide(int argc, char *argv[], int argv_sz, | |
206 | int ide_idx, const char *dev, int img_idx, | |
207 | MBRcontents mbr, const char *opts) | |
208 | { | |
209 | char *s1, *s2, *s3; | |
210 | ||
211 | s1 = g_strdup_printf("-drive id=drive%d,if=%s", | |
212 | ide_idx, dev ? "none" : "ide"); | |
213 | s2 = dev ? g_strdup("") : g_strdup_printf(",index=%d", ide_idx); | |
214 | ||
215 | if (img_secs[img_idx] >= 0) { | |
216 | setup_mbr(img_idx, mbr); | |
217 | s3 = g_strdup_printf(",file=%s", img_file_name[img_idx]); | |
218 | } else { | |
219 | s3 = g_strdup(",media=cdrom"); | |
220 | } | |
221 | argc = append_arg(argc, argv, argv_sz, | |
222 | g_strdup_printf("%s%s%s%s", s1, s2, s3, opts)); | |
223 | g_free(s1); | |
224 | g_free(s2); | |
225 | g_free(s3); | |
226 | ||
227 | if (dev) { | |
228 | argc = append_arg(argc, argv, argv_sz, | |
229 | g_strdup_printf("-device %s,drive=drive%d," | |
230 | "bus=ide.%d,unit=%d", | |
231 | dev, ide_idx, | |
232 | ide_idx / 2, ide_idx % 2)); | |
233 | } | |
234 | return argc; | |
235 | } | |
236 | ||
237 | /* | |
238 | * Test case: no IDE devices | |
239 | */ | |
240 | static void test_ide_none(void) | |
241 | { | |
242 | char *argv[256]; | |
243 | ||
244 | setup_common(argv, ARRAY_SIZE(argv)); | |
245 | qtest_start(g_strjoinv(" ", argv)); | |
246 | test_cmos(); | |
1d9358e6 | 247 | qtest_end(); |
0e8a8c8f MA |
248 | } |
249 | ||
250 | static void test_ide_mbr(bool use_device, MBRcontents mbr) | |
251 | { | |
252 | char *argv[256]; | |
253 | int argc; | |
254 | Backend i; | |
255 | const char *dev; | |
256 | ||
257 | argc = setup_common(argv, ARRAY_SIZE(argv)); | |
258 | for (i = 0; i < backend_last; i++) { | |
259 | cur_ide[i] = &hd_chst[i][mbr]; | |
260 | dev = use_device ? (is_hd(cur_ide[i]) ? "ide-hd" : "ide-cd") : NULL; | |
261 | argc = setup_ide(argc, argv, ARRAY_SIZE(argv), i, dev, i, mbr, ""); | |
262 | } | |
263 | qtest_start(g_strjoinv(" ", argv)); | |
264 | test_cmos(); | |
1d9358e6 | 265 | qtest_end(); |
0e8a8c8f MA |
266 | } |
267 | ||
268 | /* | |
269 | * Test case: IDE devices (if=ide) with blank MBRs | |
270 | */ | |
271 | static void test_ide_drive_mbr_blank(void) | |
272 | { | |
273 | test_ide_mbr(false, mbr_blank); | |
274 | } | |
275 | ||
276 | /* | |
277 | * Test case: IDE devices (if=ide) with MBRs indicating LBA is in use | |
278 | */ | |
279 | static void test_ide_drive_mbr_lba(void) | |
280 | { | |
281 | test_ide_mbr(false, mbr_lba); | |
282 | } | |
283 | ||
284 | /* | |
285 | * Test case: IDE devices (if=ide) with MBRs indicating CHS is in use | |
286 | */ | |
287 | static void test_ide_drive_mbr_chs(void) | |
288 | { | |
289 | test_ide_mbr(false, mbr_chs); | |
290 | } | |
291 | ||
292 | /* | |
293 | * Test case: IDE devices (if=none) with blank MBRs | |
294 | */ | |
295 | static void test_ide_device_mbr_blank(void) | |
296 | { | |
297 | test_ide_mbr(true, mbr_blank); | |
298 | } | |
299 | ||
300 | /* | |
301 | * Test case: IDE devices (if=none) with MBRs indicating LBA is in use | |
302 | */ | |
303 | static void test_ide_device_mbr_lba(void) | |
304 | { | |
305 | test_ide_mbr(true, mbr_lba); | |
306 | } | |
307 | ||
308 | /* | |
309 | * Test case: IDE devices (if=none) with MBRs indicating CHS is in use | |
310 | */ | |
311 | static void test_ide_device_mbr_chs(void) | |
312 | { | |
313 | test_ide_mbr(true, mbr_chs); | |
314 | } | |
315 | ||
316 | static void test_ide_drive_user(const char *dev, bool trans) | |
317 | { | |
318 | char *argv[256], *opts; | |
319 | int argc; | |
320 | int secs = img_secs[backend_small]; | |
321 | const CHST expected_chst = { secs / (4 * 32) , 4, 32, trans }; | |
322 | ||
323 | argc = setup_common(argv, ARRAY_SIZE(argv)); | |
856dcba2 MA |
324 | opts = g_strdup_printf("%s,%s%scyls=%d,heads=%d,secs=%d", |
325 | dev ?: "", | |
326 | trans && dev ? "bios-chs-" : "", | |
327 | trans ? "trans=lba," : "", | |
0e8a8c8f | 328 | expected_chst.cyls, expected_chst.heads, |
856dcba2 | 329 | expected_chst.secs); |
0e8a8c8f MA |
330 | cur_ide[0] = &expected_chst; |
331 | argc = setup_ide(argc, argv, ARRAY_SIZE(argv), | |
856dcba2 MA |
332 | 0, dev ? opts : NULL, backend_small, mbr_chs, |
333 | dev ? "" : opts); | |
0e8a8c8f MA |
334 | g_free(opts); |
335 | qtest_start(g_strjoinv(" ", argv)); | |
336 | test_cmos(); | |
1d9358e6 | 337 | qtest_end(); |
0e8a8c8f MA |
338 | } |
339 | ||
340 | /* | |
341 | * Test case: IDE device (if=ide) with explicit CHS | |
342 | */ | |
343 | static void test_ide_drive_user_chs(void) | |
344 | { | |
345 | test_ide_drive_user(NULL, false); | |
346 | } | |
347 | ||
348 | /* | |
349 | * Test case: IDE device (if=ide) with explicit CHS and translation | |
350 | */ | |
351 | static void test_ide_drive_user_chst(void) | |
352 | { | |
353 | test_ide_drive_user(NULL, true); | |
354 | } | |
355 | ||
356 | /* | |
357 | * Test case: IDE device (if=none) with explicit CHS | |
358 | */ | |
359 | static void test_ide_device_user_chs(void) | |
360 | { | |
361 | test_ide_drive_user("ide-hd", false); | |
362 | } | |
363 | ||
364 | /* | |
365 | * Test case: IDE device (if=none) with explicit CHS and translation | |
366 | */ | |
367 | static void test_ide_device_user_chst(void) | |
368 | { | |
369 | test_ide_drive_user("ide-hd", true); | |
370 | } | |
371 | ||
4e4e6e31 MA |
372 | /* |
373 | * Test case: IDE devices (if=ide), but use index=0 for CD-ROM | |
374 | */ | |
375 | static void test_ide_drive_cd_0(void) | |
376 | { | |
377 | char *argv[256]; | |
378 | int argc, ide_idx; | |
379 | Backend i; | |
380 | ||
381 | argc = setup_common(argv, ARRAY_SIZE(argv)); | |
382 | for (i = 0; i <= backend_empty; i++) { | |
383 | ide_idx = backend_empty - i; | |
384 | cur_ide[ide_idx] = &hd_chst[i][mbr_blank]; | |
385 | argc = setup_ide(argc, argv, ARRAY_SIZE(argv), | |
386 | ide_idx, NULL, i, mbr_blank, ""); | |
387 | } | |
388 | qtest_start(g_strjoinv(" ", argv)); | |
389 | test_cmos(); | |
1d9358e6 | 390 | qtest_end(); |
4e4e6e31 MA |
391 | } |
392 | ||
0e8a8c8f MA |
393 | int main(int argc, char **argv) |
394 | { | |
395 | Backend i; | |
396 | int ret; | |
397 | ||
398 | g_test_init(&argc, &argv, NULL); | |
399 | ||
400 | for (i = 0; i < backend_last; i++) { | |
401 | if (img_secs[i] >= 0) { | |
402 | img_file_name[i] = create_test_img(img_secs[i]); | |
403 | } else { | |
404 | img_file_name[i] = NULL; | |
405 | } | |
406 | } | |
407 | ||
408 | qtest_add_func("hd-geo/ide/none", test_ide_none); | |
409 | qtest_add_func("hd-geo/ide/drive/mbr/blank", test_ide_drive_mbr_blank); | |
410 | qtest_add_func("hd-geo/ide/drive/mbr/lba", test_ide_drive_mbr_lba); | |
411 | qtest_add_func("hd-geo/ide/drive/mbr/chs", test_ide_drive_mbr_chs); | |
412 | qtest_add_func("hd-geo/ide/drive/user/chs", test_ide_drive_user_chs); | |
413 | qtest_add_func("hd-geo/ide/drive/user/chst", test_ide_drive_user_chst); | |
4e4e6e31 | 414 | qtest_add_func("hd-geo/ide/drive/cd_0", test_ide_drive_cd_0); |
0e8a8c8f MA |
415 | qtest_add_func("hd-geo/ide/device/mbr/blank", test_ide_device_mbr_blank); |
416 | qtest_add_func("hd-geo/ide/device/mbr/lba", test_ide_device_mbr_lba); | |
417 | qtest_add_func("hd-geo/ide/device/mbr/chs", test_ide_device_mbr_chs); | |
418 | qtest_add_func("hd-geo/ide/device/user/chs", test_ide_device_user_chs); | |
419 | qtest_add_func("hd-geo/ide/device/user/chst", test_ide_device_user_chst); | |
420 | ||
421 | ret = g_test_run(); | |
422 | ||
423 | for (i = 0; i < backend_last; i++) { | |
424 | unlink(img_file_name[i]); | |
425 | } | |
426 | ||
427 | return ret; | |
428 | } |