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CommitLineData
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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
681c28a3 18#include "qemu/osdep.h"
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19#include "qemu-common.h"
20#include "libqtest.h"
21
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22#define ARGV_SIZE 256
23
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24static 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
37typedef struct {
38 int cyls, heads, secs, trans;
39} CHST;
40
41typedef enum {
42 mbr_blank, mbr_lba, mbr_chs,
43 mbr_last
44} MBRcontents;
45
46typedef enum {
47 /* order is relevant */
48 backend_small, backend_large, backend_empty,
49 backend_last
50} Backend;
51
52static const int img_secs[backend_last] = {
53 [backend_small] = 61440,
54 [backend_large] = 8388608,
55 [backend_empty] = -1,
56};
57
58static 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
2c8f8696 71static char *img_file_name[backend_last];
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72
73static const CHST *cur_ide[4];
74
75static bool is_hd(const CHST *expected_chst)
76{
77 return expected_chst && expected_chst->cyls;
78}
79
44c2364a 80static void test_cmos_byte(QTestState *qts, int reg, int expected)
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81{
82 enum { cmos_base = 0x70 };
83 int actual;
84
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85 qtest_outb(qts, cmos_base + 0, reg);
86 actual = qtest_inb(qts, cmos_base + 1);
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87 g_assert(actual == expected);
88}
89
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90static void test_cmos_bytes(QTestState *qts, int reg0, int n,
91 uint8_t expected[])
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92{
93 int i;
94
95 for (i = 0; i < 9; i++) {
44c2364a 96 test_cmos_byte(qts, reg0 + i, expected[i]);
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97 }
98}
99
44c2364a 100static void test_cmos_disk_data(QTestState *qts)
0e8a8c8f 101{
44c2364a 102 test_cmos_byte(qts, 0x12,
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103 (is_hd(cur_ide[0]) ? 0xf0 : 0) |
104 (is_hd(cur_ide[1]) ? 0x0f : 0));
105}
106
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107static void test_cmos_drive_cyl(QTestState *qts, int reg0,
108 const CHST *expected_chst)
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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 };
44c2364a 118 test_cmos_bytes(qts, reg0, 9, expected_bytes);
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119 } else {
120 int i;
121
122 for (i = 0; i < 9; i++) {
44c2364a 123 test_cmos_byte(qts, reg0 + i, 0);
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124 }
125 }
126}
127
44c2364a 128static void test_cmos_drive1(QTestState *qts)
0e8a8c8f 129{
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130 test_cmos_byte(qts, 0x19, is_hd(cur_ide[0]) ? 47 : 0);
131 test_cmos_drive_cyl(qts, 0x1b, cur_ide[0]);
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132}
133
44c2364a 134static void test_cmos_drive2(QTestState *qts)
0e8a8c8f 135{
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136 test_cmos_byte(qts, 0x1a, is_hd(cur_ide[1]) ? 47 : 0);
137 test_cmos_drive_cyl(qts, 0x24, cur_ide[1]);
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138}
139
44c2364a 140static void test_cmos_disktransflag(QTestState *qts)
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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 }
44c2364a 150 test_cmos_byte(qts, 0x39, val);
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151}
152
44c2364a 153static void test_cmos(QTestState *qts)
0e8a8c8f 154{
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155 test_cmos_disk_data(qts);
156 test_cmos_drive1(qts);
157 test_cmos_drive2(qts);
158 test_cmos_disktransflag(qts);
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159}
160
161static 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
169static 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,
2ad645d2 173 g_strdup("-nodefaults"));
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174}
175
176static 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
204static int setup_ide(int argc, char *argv[], int argv_sz,
205 int ide_idx, const char *dev, int img_idx,
b24ec3c4 206 MBRcontents mbr)
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207{
208 char *s1, *s2, *s3;
209
39c4ae94 210 s1 = g_strdup_printf("-drive id=drive%d,if=%s",
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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);
39c4ae94 216 s3 = g_strdup_printf(",format=raw,file=%s", img_file_name[img_idx]);
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217 } else {
218 s3 = g_strdup(",media=cdrom");
219 }
220 argc = append_arg(argc, argv, argv_sz,
b24ec3c4 221 g_strdup_printf("%s%s%s", s1, s2, s3));
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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 */
239static void test_ide_none(void)
240{
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241 char **argv = g_new0(char *, ARGV_SIZE);
242 char *args;
44c2364a 243 QTestState *qts;
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244
245 setup_common(argv, ARGV_SIZE);
246 args = g_strjoinv(" ", argv);
44c2364a 247 qts = qtest_init(args);
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248 g_strfreev(argv);
249 g_free(args);
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250 test_cmos(qts);
251 qtest_quit(qts);
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252}
253
254static void test_ide_mbr(bool use_device, MBRcontents mbr)
255{
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256 char **argv = g_new0(char *, ARGV_SIZE);
257 char *args;
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258 int argc;
259 Backend i;
260 const char *dev;
44c2364a 261 QTestState *qts;
0e8a8c8f 262
2c8f8696 263 argc = setup_common(argv, ARGV_SIZE);
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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;
b24ec3c4 267 argc = setup_ide(argc, argv, ARGV_SIZE, i, dev, i, mbr);
0e8a8c8f 268 }
2c8f8696 269 args = g_strjoinv(" ", argv);
44c2364a 270 qts = qtest_init(args);
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271 g_strfreev(argv);
272 g_free(args);
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273 test_cmos(qts);
274 qtest_quit(qts);
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275}
276
277/*
278 * Test case: IDE devices (if=ide) with blank MBRs
279 */
280static 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 */
288static 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 */
296static 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 */
304static 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 */
312static 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 */
320static void test_ide_device_mbr_chs(void)
321{
322 test_ide_mbr(true, mbr_chs);
323}
324
325static void test_ide_drive_user(const char *dev, bool trans)
326{
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327 char **argv = g_new0(char *, ARGV_SIZE);
328 char *args, *opts;
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329 int argc;
330 int secs = img_secs[backend_small];
331 const CHST expected_chst = { secs / (4 * 32) , 4, 32, trans };
44c2364a 332 QTestState *qts;
0e8a8c8f 333
2c8f8696 334 argc = setup_common(argv, ARGV_SIZE);
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335 opts = g_strdup_printf("%s,%scyls=%d,heads=%d,secs=%d",
336 dev, trans ? "bios-chs-trans=lba," : "",
0e8a8c8f 337 expected_chst.cyls, expected_chst.heads,
856dcba2 338 expected_chst.secs);
0e8a8c8f 339 cur_ide[0] = &expected_chst;
b24ec3c4 340 argc = setup_ide(argc, argv, ARGV_SIZE, 0, opts, backend_small, mbr_chs);
0e8a8c8f 341 g_free(opts);
2c8f8696 342 args = g_strjoinv(" ", argv);
44c2364a 343 qts = qtest_init(args);
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344 g_strfreev(argv);
345 g_free(args);
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346 test_cmos(qts);
347 qtest_quit(qts);
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348}
349
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350/*
351 * Test case: IDE device (if=none) with explicit CHS
352 */
353static 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 */
361static void test_ide_device_user_chst(void)
362{
363 test_ide_drive_user("ide-hd", true);
364}
365
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366/*
367 * Test case: IDE devices (if=ide), but use index=0 for CD-ROM
368 */
369static void test_ide_drive_cd_0(void)
370{
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371 char **argv = g_new0(char *, ARGV_SIZE);
372 char *args;
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373 int argc, ide_idx;
374 Backend i;
44c2364a 375 QTestState *qts;
4e4e6e31 376
2c8f8696 377 argc = setup_common(argv, ARGV_SIZE);
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378 for (i = 0; i <= backend_empty; i++) {
379 ide_idx = backend_empty - i;
380 cur_ide[ide_idx] = &hd_chst[i][mbr_blank];
b24ec3c4 381 argc = setup_ide(argc, argv, ARGV_SIZE, ide_idx, NULL, i, mbr_blank);
4e4e6e31 382 }
2c8f8696 383 args = g_strjoinv(" ", argv);
44c2364a 384 qts = qtest_init(args);
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385 g_strfreev(argv);
386 g_free(args);
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387 test_cmos(qts);
388 qtest_quit(qts);
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389}
390
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391int 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);
4e4e6e31 410 qtest_add_func("hd-geo/ide/drive/cd_0", test_ide_drive_cd_0);
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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++) {
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420 if (img_file_name[i]) {
421 unlink(img_file_name[i]);
2c8f8696 422 free(img_file_name[i]);
0813cbf9 423 }
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424 }
425
426 return ret;
427}