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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 "qemu/osdep.h" | |
19 | #include "qemu-common.h" | |
20 | #include "libqtest.h" | |
21 | ||
22 | #define ARGV_SIZE 256 | |
23 | ||
24 | static char *create_test_img(int secs) | |
25 | { | |
26 | char *template = strdup("/tmp/qtest.XXXXXX"); | |
27 | int fd, ret; | |
28 | ||
29 | fd = mkstemp(template); | |
30 | g_assert(fd >= 0); | |
31 | ret = ftruncate(fd, (off_t)secs * 512); | |
32 | g_assert(ret == 0); | |
33 | close(fd); | |
34 | return template; | |
35 | } | |
36 | ||
37 | typedef struct { | |
38 | int cyls, heads, secs, trans; | |
39 | } CHST; | |
40 | ||
41 | typedef enum { | |
42 | mbr_blank, mbr_lba, mbr_chs, | |
43 | mbr_last | |
44 | } MBRcontents; | |
45 | ||
46 | typedef enum { | |
47 | /* order is relevant */ | |
48 | backend_small, backend_large, backend_empty, | |
49 | backend_last | |
50 | } Backend; | |
51 | ||
52 | static const int img_secs[backend_last] = { | |
53 | [backend_small] = 61440, | |
54 | [backend_large] = 8388608, | |
55 | [backend_empty] = -1, | |
56 | }; | |
57 | ||
58 | static const CHST hd_chst[backend_last][mbr_last] = { | |
59 | [backend_small] = { | |
60 | [mbr_blank] = { 60, 16, 63, 0 }, | |
61 | [mbr_lba] = { 60, 16, 63, 2 }, | |
62 | [mbr_chs] = { 60, 16, 63, 0 } | |
63 | }, | |
64 | [backend_large] = { | |
65 | [mbr_blank] = { 8322, 16, 63, 1 }, | |
66 | [mbr_lba] = { 8322, 16, 63, 1 }, | |
67 | [mbr_chs] = { 8322, 16, 63, 0 } | |
68 | }, | |
69 | }; | |
70 | ||
71 | static char *img_file_name[backend_last]; | |
72 | ||
73 | static const CHST *cur_ide[4]; | |
74 | ||
75 | static bool is_hd(const CHST *expected_chst) | |
76 | { | |
77 | return expected_chst && expected_chst->cyls; | |
78 | } | |
79 | ||
80 | static void test_cmos_byte(QTestState *qts, int reg, int expected) | |
81 | { | |
82 | enum { cmos_base = 0x70 }; | |
83 | int actual; | |
84 | ||
85 | qtest_outb(qts, cmos_base + 0, reg); | |
86 | actual = qtest_inb(qts, cmos_base + 1); | |
87 | g_assert(actual == expected); | |
88 | } | |
89 | ||
90 | static void test_cmos_bytes(QTestState *qts, int reg0, int n, | |
91 | uint8_t expected[]) | |
92 | { | |
93 | int i; | |
94 | ||
95 | for (i = 0; i < 9; i++) { | |
96 | test_cmos_byte(qts, reg0 + i, expected[i]); | |
97 | } | |
98 | } | |
99 | ||
100 | static void test_cmos_disk_data(QTestState *qts) | |
101 | { | |
102 | test_cmos_byte(qts, 0x12, | |
103 | (is_hd(cur_ide[0]) ? 0xf0 : 0) | | |
104 | (is_hd(cur_ide[1]) ? 0x0f : 0)); | |
105 | } | |
106 | ||
107 | static void test_cmos_drive_cyl(QTestState *qts, int reg0, | |
108 | const CHST *expected_chst) | |
109 | { | |
110 | if (is_hd(expected_chst)) { | |
111 | int c = expected_chst->cyls; | |
112 | int h = expected_chst->heads; | |
113 | int s = expected_chst->secs; | |
114 | uint8_t expected_bytes[9] = { | |
115 | c & 0xff, c >> 8, h, 0xff, 0xff, 0xc0 | ((h > 8) << 3), | |
116 | c & 0xff, c >> 8, s | |
117 | }; | |
118 | test_cmos_bytes(qts, reg0, 9, expected_bytes); | |
119 | } else { | |
120 | int i; | |
121 | ||
122 | for (i = 0; i < 9; i++) { | |
123 | test_cmos_byte(qts, reg0 + i, 0); | |
124 | } | |
125 | } | |
126 | } | |
127 | ||
128 | static void test_cmos_drive1(QTestState *qts) | |
129 | { | |
130 | test_cmos_byte(qts, 0x19, is_hd(cur_ide[0]) ? 47 : 0); | |
131 | test_cmos_drive_cyl(qts, 0x1b, cur_ide[0]); | |
132 | } | |
133 | ||
134 | static void test_cmos_drive2(QTestState *qts) | |
135 | { | |
136 | test_cmos_byte(qts, 0x1a, is_hd(cur_ide[1]) ? 47 : 0); | |
137 | test_cmos_drive_cyl(qts, 0x24, cur_ide[1]); | |
138 | } | |
139 | ||
140 | static void test_cmos_disktransflag(QTestState *qts) | |
141 | { | |
142 | int val, i; | |
143 | ||
144 | val = 0; | |
145 | for (i = 0; i < ARRAY_SIZE(cur_ide); i++) { | |
146 | if (is_hd(cur_ide[i])) { | |
147 | val |= cur_ide[i]->trans << (2 * i); | |
148 | } | |
149 | } | |
150 | test_cmos_byte(qts, 0x39, val); | |
151 | } | |
152 | ||
153 | static void test_cmos(QTestState *qts) | |
154 | { | |
155 | test_cmos_disk_data(qts); | |
156 | test_cmos_drive1(qts); | |
157 | test_cmos_drive2(qts); | |
158 | test_cmos_disktransflag(qts); | |
159 | } | |
160 | ||
161 | static int append_arg(int argc, char *argv[], int argv_sz, char *arg) | |
162 | { | |
163 | g_assert(argc + 1 < argv_sz); | |
164 | argv[argc++] = arg; | |
165 | argv[argc] = NULL; | |
166 | return argc; | |
167 | } | |
168 | ||
169 | static int setup_common(char *argv[], int argv_sz) | |
170 | { | |
171 | memset(cur_ide, 0, sizeof(cur_ide)); | |
172 | return append_arg(0, argv, argv_sz, | |
173 | g_strdup("-nodefaults")); | |
174 | } | |
175 | ||
176 | static void setup_mbr(int img_idx, MBRcontents mbr) | |
177 | { | |
178 | static const uint8_t part_lba[16] = { | |
179 | /* chs 0,1,1 (lba 63) to chs 0,127,63 (8001 sectors) */ | |
180 | 0x80, 1, 1, 0, 6, 127, 63, 0, 63, 0, 0, 0, 0x41, 0x1F, 0, 0, | |
181 | }; | |
182 | static const uint8_t part_chs[16] = { | |
183 | /* chs 0,1,1 (lba 63) to chs 7,15,63 (8001 sectors) */ | |
184 | 0x80, 1, 1, 0, 6, 15, 63, 7, 63, 0, 0, 0, 0x41, 0x1F, 0, 0, | |
185 | }; | |
186 | uint8_t buf[512]; | |
187 | int fd, ret; | |
188 | ||
189 | memset(buf, 0, sizeof(buf)); | |
190 | ||
191 | if (mbr != mbr_blank) { | |
192 | buf[0x1fe] = 0x55; | |
193 | buf[0x1ff] = 0xAA; | |
194 | memcpy(buf + 0x1BE, mbr == mbr_lba ? part_lba : part_chs, 16); | |
195 | } | |
196 | ||
197 | fd = open(img_file_name[img_idx], O_WRONLY); | |
198 | g_assert(fd >= 0); | |
199 | ret = write(fd, buf, sizeof(buf)); | |
200 | g_assert(ret == sizeof(buf)); | |
201 | close(fd); | |
202 | } | |
203 | ||
204 | static int setup_ide(int argc, char *argv[], int argv_sz, | |
205 | int ide_idx, const char *dev, int img_idx, | |
206 | MBRcontents mbr) | |
207 | { | |
208 | char *s1, *s2, *s3; | |
209 | ||
210 | s1 = g_strdup_printf("-drive id=drive%d,if=%s", | |
211 | ide_idx, dev ? "none" : "ide"); | |
212 | s2 = dev ? g_strdup("") : g_strdup_printf(",index=%d", ide_idx); | |
213 | ||
214 | if (img_secs[img_idx] >= 0) { | |
215 | setup_mbr(img_idx, mbr); | |
216 | s3 = g_strdup_printf(",format=raw,file=%s", img_file_name[img_idx]); | |
217 | } else { | |
218 | s3 = g_strdup(",media=cdrom"); | |
219 | } | |
220 | argc = append_arg(argc, argv, argv_sz, | |
221 | g_strdup_printf("%s%s%s", s1, s2, s3)); | |
222 | g_free(s1); | |
223 | g_free(s2); | |
224 | g_free(s3); | |
225 | ||
226 | if (dev) { | |
227 | argc = append_arg(argc, argv, argv_sz, | |
228 | g_strdup_printf("-device %s,drive=drive%d," | |
229 | "bus=ide.%d,unit=%d", | |
230 | dev, ide_idx, | |
231 | ide_idx / 2, ide_idx % 2)); | |
232 | } | |
233 | return argc; | |
234 | } | |
235 | ||
236 | /* | |
237 | * Test case: no IDE devices | |
238 | */ | |
239 | static void test_ide_none(void) | |
240 | { | |
241 | char **argv = g_new0(char *, ARGV_SIZE); | |
242 | char *args; | |
243 | QTestState *qts; | |
244 | ||
245 | setup_common(argv, ARGV_SIZE); | |
246 | args = g_strjoinv(" ", argv); | |
247 | qts = qtest_init(args); | |
248 | g_strfreev(argv); | |
249 | g_free(args); | |
250 | test_cmos(qts); | |
251 | qtest_quit(qts); | |
252 | } | |
253 | ||
254 | static void test_ide_mbr(bool use_device, MBRcontents mbr) | |
255 | { | |
256 | char **argv = g_new0(char *, ARGV_SIZE); | |
257 | char *args; | |
258 | int argc; | |
259 | Backend i; | |
260 | const char *dev; | |
261 | QTestState *qts; | |
262 | ||
263 | argc = setup_common(argv, ARGV_SIZE); | |
264 | for (i = 0; i < backend_last; i++) { | |
265 | cur_ide[i] = &hd_chst[i][mbr]; | |
266 | dev = use_device ? (is_hd(cur_ide[i]) ? "ide-hd" : "ide-cd") : NULL; | |
267 | argc = setup_ide(argc, argv, ARGV_SIZE, i, dev, i, mbr); | |
268 | } | |
269 | args = g_strjoinv(" ", argv); | |
270 | qts = qtest_init(args); | |
271 | g_strfreev(argv); | |
272 | g_free(args); | |
273 | test_cmos(qts); | |
274 | qtest_quit(qts); | |
275 | } | |
276 | ||
277 | /* | |
278 | * Test case: IDE devices (if=ide) with blank MBRs | |
279 | */ | |
280 | static void test_ide_drive_mbr_blank(void) | |
281 | { | |
282 | test_ide_mbr(false, mbr_blank); | |
283 | } | |
284 | ||
285 | /* | |
286 | * Test case: IDE devices (if=ide) with MBRs indicating LBA is in use | |
287 | */ | |
288 | static void test_ide_drive_mbr_lba(void) | |
289 | { | |
290 | test_ide_mbr(false, mbr_lba); | |
291 | } | |
292 | ||
293 | /* | |
294 | * Test case: IDE devices (if=ide) with MBRs indicating CHS is in use | |
295 | */ | |
296 | static void test_ide_drive_mbr_chs(void) | |
297 | { | |
298 | test_ide_mbr(false, mbr_chs); | |
299 | } | |
300 | ||
301 | /* | |
302 | * Test case: IDE devices (if=none) with blank MBRs | |
303 | */ | |
304 | static void test_ide_device_mbr_blank(void) | |
305 | { | |
306 | test_ide_mbr(true, mbr_blank); | |
307 | } | |
308 | ||
309 | /* | |
310 | * Test case: IDE devices (if=none) with MBRs indicating LBA is in use | |
311 | */ | |
312 | static void test_ide_device_mbr_lba(void) | |
313 | { | |
314 | test_ide_mbr(true, mbr_lba); | |
315 | } | |
316 | ||
317 | /* | |
318 | * Test case: IDE devices (if=none) with MBRs indicating CHS is in use | |
319 | */ | |
320 | static void test_ide_device_mbr_chs(void) | |
321 | { | |
322 | test_ide_mbr(true, mbr_chs); | |
323 | } | |
324 | ||
325 | static void test_ide_drive_user(const char *dev, bool trans) | |
326 | { | |
327 | char **argv = g_new0(char *, ARGV_SIZE); | |
328 | char *args, *opts; | |
329 | int argc; | |
330 | int secs = img_secs[backend_small]; | |
331 | const CHST expected_chst = { secs / (4 * 32) , 4, 32, trans }; | |
332 | QTestState *qts; | |
333 | ||
334 | argc = setup_common(argv, ARGV_SIZE); | |
335 | opts = g_strdup_printf("%s,%scyls=%d,heads=%d,secs=%d", | |
336 | dev, trans ? "bios-chs-trans=lba," : "", | |
337 | expected_chst.cyls, expected_chst.heads, | |
338 | expected_chst.secs); | |
339 | cur_ide[0] = &expected_chst; | |
340 | argc = setup_ide(argc, argv, ARGV_SIZE, 0, opts, backend_small, mbr_chs); | |
341 | g_free(opts); | |
342 | args = g_strjoinv(" ", argv); | |
343 | qts = qtest_init(args); | |
344 | g_strfreev(argv); | |
345 | g_free(args); | |
346 | test_cmos(qts); | |
347 | qtest_quit(qts); | |
348 | } | |
349 | ||
350 | /* | |
351 | * Test case: IDE device (if=none) with explicit CHS | |
352 | */ | |
353 | static void test_ide_device_user_chs(void) | |
354 | { | |
355 | test_ide_drive_user("ide-hd", false); | |
356 | } | |
357 | ||
358 | /* | |
359 | * Test case: IDE device (if=none) with explicit CHS and translation | |
360 | */ | |
361 | static void test_ide_device_user_chst(void) | |
362 | { | |
363 | test_ide_drive_user("ide-hd", true); | |
364 | } | |
365 | ||
366 | /* | |
367 | * Test case: IDE devices (if=ide), but use index=0 for CD-ROM | |
368 | */ | |
369 | static void test_ide_drive_cd_0(void) | |
370 | { | |
371 | char **argv = g_new0(char *, ARGV_SIZE); | |
372 | char *args; | |
373 | int argc, ide_idx; | |
374 | Backend i; | |
375 | QTestState *qts; | |
376 | ||
377 | argc = setup_common(argv, ARGV_SIZE); | |
378 | for (i = 0; i <= backend_empty; i++) { | |
379 | ide_idx = backend_empty - i; | |
380 | cur_ide[ide_idx] = &hd_chst[i][mbr_blank]; | |
381 | argc = setup_ide(argc, argv, ARGV_SIZE, ide_idx, NULL, i, mbr_blank); | |
382 | } | |
383 | args = g_strjoinv(" ", argv); | |
384 | qts = qtest_init(args); | |
385 | g_strfreev(argv); | |
386 | g_free(args); | |
387 | test_cmos(qts); | |
388 | qtest_quit(qts); | |
389 | } | |
390 | ||
391 | int main(int argc, char **argv) | |
392 | { | |
393 | Backend i; | |
394 | int ret; | |
395 | ||
396 | g_test_init(&argc, &argv, NULL); | |
397 | ||
398 | for (i = 0; i < backend_last; i++) { | |
399 | if (img_secs[i] >= 0) { | |
400 | img_file_name[i] = create_test_img(img_secs[i]); | |
401 | } else { | |
402 | img_file_name[i] = NULL; | |
403 | } | |
404 | } | |
405 | ||
406 | qtest_add_func("hd-geo/ide/none", test_ide_none); | |
407 | qtest_add_func("hd-geo/ide/drive/mbr/blank", test_ide_drive_mbr_blank); | |
408 | qtest_add_func("hd-geo/ide/drive/mbr/lba", test_ide_drive_mbr_lba); | |
409 | qtest_add_func("hd-geo/ide/drive/mbr/chs", test_ide_drive_mbr_chs); | |
410 | qtest_add_func("hd-geo/ide/drive/cd_0", test_ide_drive_cd_0); | |
411 | qtest_add_func("hd-geo/ide/device/mbr/blank", test_ide_device_mbr_blank); | |
412 | qtest_add_func("hd-geo/ide/device/mbr/lba", test_ide_device_mbr_lba); | |
413 | qtest_add_func("hd-geo/ide/device/mbr/chs", test_ide_device_mbr_chs); | |
414 | qtest_add_func("hd-geo/ide/device/user/chs", test_ide_device_user_chs); | |
415 | qtest_add_func("hd-geo/ide/device/user/chst", test_ide_device_user_chst); | |
416 | ||
417 | ret = g_test_run(); | |
418 | ||
419 | for (i = 0; i < backend_last; i++) { | |
420 | if (img_file_name[i]) { | |
421 | unlink(img_file_name[i]); | |
422 | free(img_file_name[i]); | |
423 | } | |
424 | } | |
425 | ||
426 | return ret; | |
427 | } |