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