/* * 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 <glib.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include "qemu-common.h" #include "libqtest.h" static const char test_image[] = "/tmp/qtest.XXXXXX"; 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 const 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(int reg, int expected) { enum { cmos_base = 0x70 }; int actual; outb(cmos_base + 0, reg); actual = inb(cmos_base + 1); g_assert(actual == expected); } static void test_cmos_bytes(int reg0, int n, uint8_t expected[]) { int i; for (i = 0; i < 9; i++) { test_cmos_byte(reg0 + i, expected[i]); } } static void test_cmos_disk_data(void) { test_cmos_byte(0x12, (is_hd(cur_ide[0]) ? 0xf0 : 0) | (is_hd(cur_ide[1]) ? 0x0f : 0)); } static void test_cmos_drive_cyl(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(reg0, 9, expected_bytes); } else { int i; for (i = 0; i < 9; i++) { test_cmos_byte(reg0 + i, 0); } } } static void test_cmos_drive1(void) { test_cmos_byte(0x19, is_hd(cur_ide[0]) ? 47 : 0); test_cmos_drive_cyl(0x1b, cur_ide[0]); } static void test_cmos_drive2(void) { test_cmos_byte(0x1a, is_hd(cur_ide[1]) ? 47 : 0); test_cmos_drive_cyl(0x24, cur_ide[1]); } static void test_cmos_disktransflag(void) { 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(0x39, val); } static void test_cmos(void) { test_cmos_disk_data(); test_cmos_drive1(); test_cmos_drive2(); test_cmos_disktransflag(); } 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 -display none")); } 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, const char *opts) { 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(",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%s", s1, s2, s3, opts)); 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[256]; setup_common(argv, ARRAY_SIZE(argv)); qtest_start(g_strjoinv(" ", argv)); test_cmos(); qtest_quit(global_qtest); } static void test_ide_mbr(bool use_device, MBRcontents mbr) { char *argv[256]; int argc; Backend i; const char *dev; argc = setup_common(argv, ARRAY_SIZE(argv)); 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, ARRAY_SIZE(argv), i, dev, i, mbr, ""); } qtest_start(g_strjoinv(" ", argv)); test_cmos(); qtest_quit(global_qtest); } /* * 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[256], *opts; int argc; int secs = img_secs[backend_small]; const CHST expected_chst = { secs / (4 * 32) , 4, 32, trans }; argc = setup_common(argv, ARRAY_SIZE(argv)); opts = g_strdup_printf("%s,%s%scyls=%d,heads=%d,secs=%d", dev ?: "", trans && dev ? "bios-chs-" : "", trans ? "trans=lba," : "", expected_chst.cyls, expected_chst.heads, expected_chst.secs); cur_ide[0] = &expected_chst; argc = setup_ide(argc, argv, ARRAY_SIZE(argv), 0, dev ? opts : NULL, backend_small, mbr_chs, dev ? "" : opts); g_free(opts); qtest_start(g_strjoinv(" ", argv)); test_cmos(); qtest_quit(global_qtest); } /* * Test case: IDE device (if=ide) with explicit CHS */ static void test_ide_drive_user_chs(void) { test_ide_drive_user(NULL, false); } /* * Test case: IDE device (if=ide) with explicit CHS and translation */ static void test_ide_drive_user_chst(void) { test_ide_drive_user(NULL, true); } /* * 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[256]; int argc, ide_idx; Backend i; argc = setup_common(argv, ARRAY_SIZE(argv)); 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, ARRAY_SIZE(argv), ide_idx, NULL, i, mbr_blank, ""); } qtest_start(g_strjoinv(" ", argv)); test_cmos(); qtest_quit(global_qtest); } 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/user/chs", test_ide_drive_user_chs); qtest_add_func("hd-geo/ide/drive/user/chst", test_ide_drive_user_chst); 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++) { unlink(img_file_name[i]); } return ret; }