| /* |
| * Hard disk geometry test cases. |
| * |
| * Copyright (c) 2012 Red Hat Inc. |
| * |
| * Authors: |
| * Markus Armbruster <armbru@redhat.com>, |
| * |
| * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| * See the COPYING file in the top-level directory. |
| */ |
| |
| /* |
| * Covers only IDE and tests only CMOS contents. Better than nothing. |
| * Improvements welcome. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qemu-common.h" |
| #include "libqtest.h" |
| |
| #define ARGV_SIZE 256 |
| |
| static char *create_test_img(int secs) |
| { |
| char *template = strdup("/tmp/qtest.XXXXXX"); |
| int fd, ret; |
| |
| fd = mkstemp(template); |
| g_assert(fd >= 0); |
| ret = ftruncate(fd, (off_t)secs * 512); |
| g_assert(ret == 0); |
| close(fd); |
| return template; |
| } |
| |
| typedef struct { |
| int cyls, heads, secs, trans; |
| } CHST; |
| |
| typedef enum { |
| mbr_blank, mbr_lba, mbr_chs, |
| mbr_last |
| } MBRcontents; |
| |
| typedef enum { |
| /* order is relevant */ |
| backend_small, backend_large, backend_empty, |
| backend_last |
| } Backend; |
| |
| static const int img_secs[backend_last] = { |
| [backend_small] = 61440, |
| [backend_large] = 8388608, |
| [backend_empty] = -1, |
| }; |
| |
| static const CHST hd_chst[backend_last][mbr_last] = { |
| [backend_small] = { |
| [mbr_blank] = { 60, 16, 63, 0 }, |
| [mbr_lba] = { 60, 16, 63, 2 }, |
| [mbr_chs] = { 60, 16, 63, 0 } |
| }, |
| [backend_large] = { |
| [mbr_blank] = { 8322, 16, 63, 1 }, |
| [mbr_lba] = { 8322, 16, 63, 1 }, |
| [mbr_chs] = { 8322, 16, 63, 0 } |
| }, |
| }; |
| |
| static char *img_file_name[backend_last]; |
| |
| static const CHST *cur_ide[4]; |
| |
| static bool is_hd(const CHST *expected_chst) |
| { |
| return expected_chst && expected_chst->cyls; |
| } |
| |
| static void test_cmos_byte(QTestState *qts, int reg, int expected) |
| { |
| enum { cmos_base = 0x70 }; |
| int actual; |
| |
| qtest_outb(qts, cmos_base + 0, reg); |
| actual = qtest_inb(qts, cmos_base + 1); |
| g_assert(actual == expected); |
| } |
| |
| static void test_cmos_bytes(QTestState *qts, int reg0, int n, |
| uint8_t expected[]) |
| { |
| int i; |
| |
| for (i = 0; i < 9; i++) { |
| test_cmos_byte(qts, reg0 + i, expected[i]); |
| } |
| } |
| |
| static void test_cmos_disk_data(QTestState *qts) |
| { |
| test_cmos_byte(qts, 0x12, |
| (is_hd(cur_ide[0]) ? 0xf0 : 0) | |
| (is_hd(cur_ide[1]) ? 0x0f : 0)); |
| } |
| |
| static void test_cmos_drive_cyl(QTestState *qts, int reg0, |
| const CHST *expected_chst) |
| { |
| if (is_hd(expected_chst)) { |
| int c = expected_chst->cyls; |
| int h = expected_chst->heads; |
| int s = expected_chst->secs; |
| uint8_t expected_bytes[9] = { |
| c & 0xff, c >> 8, h, 0xff, 0xff, 0xc0 | ((h > 8) << 3), |
| c & 0xff, c >> 8, s |
| }; |
| test_cmos_bytes(qts, reg0, 9, expected_bytes); |
| } else { |
| int i; |
| |
| for (i = 0; i < 9; i++) { |
| test_cmos_byte(qts, reg0 + i, 0); |
| } |
| } |
| } |
| |
| static void test_cmos_drive1(QTestState *qts) |
| { |
| test_cmos_byte(qts, 0x19, is_hd(cur_ide[0]) ? 47 : 0); |
| test_cmos_drive_cyl(qts, 0x1b, cur_ide[0]); |
| } |
| |
| static void test_cmos_drive2(QTestState *qts) |
| { |
| test_cmos_byte(qts, 0x1a, is_hd(cur_ide[1]) ? 47 : 0); |
| test_cmos_drive_cyl(qts, 0x24, cur_ide[1]); |
| } |
| |
| static void test_cmos_disktransflag(QTestState *qts) |
| { |
| int val, i; |
| |
| val = 0; |
| for (i = 0; i < ARRAY_SIZE(cur_ide); i++) { |
| if (is_hd(cur_ide[i])) { |
| val |= cur_ide[i]->trans << (2 * i); |
| } |
| } |
| test_cmos_byte(qts, 0x39, val); |
| } |
| |
| static void test_cmos(QTestState *qts) |
| { |
| test_cmos_disk_data(qts); |
| test_cmos_drive1(qts); |
| test_cmos_drive2(qts); |
| test_cmos_disktransflag(qts); |
| } |
| |
| static int append_arg(int argc, char *argv[], int argv_sz, char *arg) |
| { |
| g_assert(argc + 1 < argv_sz); |
| argv[argc++] = arg; |
| argv[argc] = NULL; |
| return argc; |
| } |
| |
| static int setup_common(char *argv[], int argv_sz) |
| { |
| memset(cur_ide, 0, sizeof(cur_ide)); |
| return append_arg(0, argv, argv_sz, |
| g_strdup("-nodefaults")); |
| } |
| |
| static void setup_mbr(int img_idx, MBRcontents mbr) |
| { |
| static const uint8_t part_lba[16] = { |
| /* chs 0,1,1 (lba 63) to chs 0,127,63 (8001 sectors) */ |
| 0x80, 1, 1, 0, 6, 127, 63, 0, 63, 0, 0, 0, 0x41, 0x1F, 0, 0, |
| }; |
| static const uint8_t part_chs[16] = { |
| /* chs 0,1,1 (lba 63) to chs 7,15,63 (8001 sectors) */ |
| 0x80, 1, 1, 0, 6, 15, 63, 7, 63, 0, 0, 0, 0x41, 0x1F, 0, 0, |
| }; |
| uint8_t buf[512]; |
| int fd, ret; |
| |
| memset(buf, 0, sizeof(buf)); |
| |
| if (mbr != mbr_blank) { |
| buf[0x1fe] = 0x55; |
| buf[0x1ff] = 0xAA; |
| memcpy(buf + 0x1BE, mbr == mbr_lba ? part_lba : part_chs, 16); |
| } |
| |
| fd = open(img_file_name[img_idx], O_WRONLY); |
| g_assert(fd >= 0); |
| ret = write(fd, buf, sizeof(buf)); |
| g_assert(ret == sizeof(buf)); |
| close(fd); |
| } |
| |
| static int setup_ide(int argc, char *argv[], int argv_sz, |
| int ide_idx, const char *dev, int img_idx, |
| MBRcontents mbr) |
| { |
| char *s1, *s2, *s3; |
| |
| s1 = g_strdup_printf("-drive id=drive%d,if=%s", |
| ide_idx, dev ? "none" : "ide"); |
| s2 = dev ? g_strdup("") : g_strdup_printf(",index=%d", ide_idx); |
| |
| if (img_secs[img_idx] >= 0) { |
| setup_mbr(img_idx, mbr); |
| s3 = g_strdup_printf(",format=raw,file=%s", img_file_name[img_idx]); |
| } else { |
| s3 = g_strdup(",media=cdrom"); |
| } |
| argc = append_arg(argc, argv, argv_sz, |
| g_strdup_printf("%s%s%s", s1, s2, s3)); |
| g_free(s1); |
| g_free(s2); |
| g_free(s3); |
| |
| if (dev) { |
| argc = append_arg(argc, argv, argv_sz, |
| g_strdup_printf("-device %s,drive=drive%d," |
| "bus=ide.%d,unit=%d", |
| dev, ide_idx, |
| ide_idx / 2, ide_idx % 2)); |
| } |
| return argc; |
| } |
| |
| /* |
| * Test case: no IDE devices |
| */ |
| static void test_ide_none(void) |
| { |
| char **argv = g_new0(char *, ARGV_SIZE); |
| char *args; |
| QTestState *qts; |
| |
| setup_common(argv, ARGV_SIZE); |
| args = g_strjoinv(" ", argv); |
| qts = qtest_init(args); |
| g_strfreev(argv); |
| g_free(args); |
| test_cmos(qts); |
| qtest_quit(qts); |
| } |
| |
| static void test_ide_mbr(bool use_device, MBRcontents mbr) |
| { |
| char **argv = g_new0(char *, ARGV_SIZE); |
| char *args; |
| int argc; |
| Backend i; |
| const char *dev; |
| QTestState *qts; |
| |
| argc = setup_common(argv, ARGV_SIZE); |
| for (i = 0; i < backend_last; i++) { |
| cur_ide[i] = &hd_chst[i][mbr]; |
| dev = use_device ? (is_hd(cur_ide[i]) ? "ide-hd" : "ide-cd") : NULL; |
| argc = setup_ide(argc, argv, ARGV_SIZE, i, dev, i, mbr); |
| } |
| args = g_strjoinv(" ", argv); |
| qts = qtest_init(args); |
| g_strfreev(argv); |
| g_free(args); |
| test_cmos(qts); |
| qtest_quit(qts); |
| } |
| |
| /* |
| * Test case: IDE devices (if=ide) with blank MBRs |
| */ |
| static void test_ide_drive_mbr_blank(void) |
| { |
| test_ide_mbr(false, mbr_blank); |
| } |
| |
| /* |
| * Test case: IDE devices (if=ide) with MBRs indicating LBA is in use |
| */ |
| static void test_ide_drive_mbr_lba(void) |
| { |
| test_ide_mbr(false, mbr_lba); |
| } |
| |
| /* |
| * Test case: IDE devices (if=ide) with MBRs indicating CHS is in use |
| */ |
| static void test_ide_drive_mbr_chs(void) |
| { |
| test_ide_mbr(false, mbr_chs); |
| } |
| |
| /* |
| * Test case: IDE devices (if=none) with blank MBRs |
| */ |
| static void test_ide_device_mbr_blank(void) |
| { |
| test_ide_mbr(true, mbr_blank); |
| } |
| |
| /* |
| * Test case: IDE devices (if=none) with MBRs indicating LBA is in use |
| */ |
| static void test_ide_device_mbr_lba(void) |
| { |
| test_ide_mbr(true, mbr_lba); |
| } |
| |
| /* |
| * Test case: IDE devices (if=none) with MBRs indicating CHS is in use |
| */ |
| static void test_ide_device_mbr_chs(void) |
| { |
| test_ide_mbr(true, mbr_chs); |
| } |
| |
| static void test_ide_drive_user(const char *dev, bool trans) |
| { |
| char **argv = g_new0(char *, ARGV_SIZE); |
| char *args, *opts; |
| int argc; |
| int secs = img_secs[backend_small]; |
| const CHST expected_chst = { secs / (4 * 32) , 4, 32, trans }; |
| QTestState *qts; |
| |
| argc = setup_common(argv, ARGV_SIZE); |
| opts = g_strdup_printf("%s,%scyls=%d,heads=%d,secs=%d", |
| dev, trans ? "bios-chs-trans=lba," : "", |
| expected_chst.cyls, expected_chst.heads, |
| expected_chst.secs); |
| cur_ide[0] = &expected_chst; |
| argc = setup_ide(argc, argv, ARGV_SIZE, 0, opts, backend_small, mbr_chs); |
| g_free(opts); |
| args = g_strjoinv(" ", argv); |
| qts = qtest_init(args); |
| g_strfreev(argv); |
| g_free(args); |
| test_cmos(qts); |
| qtest_quit(qts); |
| } |
| |
| /* |
| * Test case: IDE device (if=none) with explicit CHS |
| */ |
| static void test_ide_device_user_chs(void) |
| { |
| test_ide_drive_user("ide-hd", false); |
| } |
| |
| /* |
| * Test case: IDE device (if=none) with explicit CHS and translation |
| */ |
| static void test_ide_device_user_chst(void) |
| { |
| test_ide_drive_user("ide-hd", true); |
| } |
| |
| /* |
| * Test case: IDE devices (if=ide), but use index=0 for CD-ROM |
| */ |
| static void test_ide_drive_cd_0(void) |
| { |
| char **argv = g_new0(char *, ARGV_SIZE); |
| char *args; |
| int argc, ide_idx; |
| Backend i; |
| QTestState *qts; |
| |
| argc = setup_common(argv, ARGV_SIZE); |
| for (i = 0; i <= backend_empty; i++) { |
| ide_idx = backend_empty - i; |
| cur_ide[ide_idx] = &hd_chst[i][mbr_blank]; |
| argc = setup_ide(argc, argv, ARGV_SIZE, ide_idx, NULL, i, mbr_blank); |
| } |
| args = g_strjoinv(" ", argv); |
| qts = qtest_init(args); |
| g_strfreev(argv); |
| g_free(args); |
| test_cmos(qts); |
| qtest_quit(qts); |
| } |
| |
| int main(int argc, char **argv) |
| { |
| Backend i; |
| int ret; |
| |
| g_test_init(&argc, &argv, NULL); |
| |
| for (i = 0; i < backend_last; i++) { |
| if (img_secs[i] >= 0) { |
| img_file_name[i] = create_test_img(img_secs[i]); |
| } else { |
| img_file_name[i] = NULL; |
| } |
| } |
| |
| qtest_add_func("hd-geo/ide/none", test_ide_none); |
| qtest_add_func("hd-geo/ide/drive/mbr/blank", test_ide_drive_mbr_blank); |
| qtest_add_func("hd-geo/ide/drive/mbr/lba", test_ide_drive_mbr_lba); |
| qtest_add_func("hd-geo/ide/drive/mbr/chs", test_ide_drive_mbr_chs); |
| qtest_add_func("hd-geo/ide/drive/cd_0", test_ide_drive_cd_0); |
| qtest_add_func("hd-geo/ide/device/mbr/blank", test_ide_device_mbr_blank); |
| qtest_add_func("hd-geo/ide/device/mbr/lba", test_ide_device_mbr_lba); |
| qtest_add_func("hd-geo/ide/device/mbr/chs", test_ide_device_mbr_chs); |
| qtest_add_func("hd-geo/ide/device/user/chs", test_ide_device_user_chs); |
| qtest_add_func("hd-geo/ide/device/user/chst", test_ide_device_user_chst); |
| |
| ret = g_test_run(); |
| |
| for (i = 0; i < backend_last; i++) { |
| if (img_file_name[i]) { |
| unlink(img_file_name[i]); |
| free(img_file_name[i]); |
| } |
| } |
| |
| return ret; |
| } |