qtest: Add IDE test case

This adds a simple IDE test case and starts by verifying that IDENTIFY
can be successfully used and return the correct serial number, version
and the WCE flag is set for cache=writeback.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>

tests/Makefile

@@ -51,6 +51,7 @@ check-block-$(CONFIG_POSIX) += tests/qemu-iotests-quick.sh
 # really in libqtest, not in the testcases themselves.
 check-qtest-i386-y = tests/fdc-test$(EXESUF)
 gcov-files-i386-y = hw/fdc.c
+check-qtest-i386-y += tests/ide-test$(EXESUF)
 check-qtest-i386-y += tests/hd-geo-test$(EXESUF)
 gcov-files-i386-y += hw/hd-geometry.c
 check-qtest-i386-y += tests/rtc-test$(EXESUF)
@@ -127,6 +128,7 @@ libqos-omap-obj-y = $(libqos-obj-y) tests/libqos/i2c-omap.o
 tests/rtc-test$(EXESUF): tests/rtc-test.o
 tests/m48t59-test$(EXESUF): tests/m48t59-test.o
 tests/fdc-test$(EXESUF): tests/fdc-test.o
+tests/ide-test$(EXESUF): tests/ide-test.o $(libqos-pc-obj-y)
 tests/hd-geo-test$(EXESUF): tests/hd-geo-test.o
 tests/tmp105-test$(EXESUF): tests/tmp105-test.o $(libqos-omap-obj-y)
 tests/i440fx-test$(EXESUF): tests/i440fx-test.o $(libqos-pc-obj-y)

tests/ide-test.c

@@ -0,0 +1,165 @@
+/*
+ * IDE test cases
+ *
+ * Copyright (c) 2013 Kevin Wolf <kwolf@redhat.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <stdint.h>
+#include <string.h>
+#include <stdio.h>
+
+#include <glib.h>
+
+#include "libqtest.h"
+
+#include "qemu-common.h"
+
+#define TEST_IMAGE_SIZE 64 * 1024 * 1024
+
+#define IDE_PCI_DEV     1
+#define IDE_PCI_FUNC    1
+
+#define IDE_BASE 0x1f0
+#define IDE_PRIMARY_IRQ 14
+
+enum {
+    reg_data        = 0x0,
+    reg_nsectors    = 0x2,
+    reg_lba_low     = 0x3,
+    reg_lba_middle  = 0x4,
+    reg_lba_high    = 0x5,
+    reg_device      = 0x6,
+    reg_status      = 0x7,
+    reg_command     = 0x7,
+};
+
+enum {
+    BSY     = 0x80,
+    DRDY    = 0x40,
+    DF      = 0x20,
+    DRQ     = 0x08,
+    ERR     = 0x01,
+};
+
+enum {
+    CMD_IDENTIFY    = 0xec,
+};
+
+#define assert_bit_set(data, mask) g_assert_cmphex((data) & (mask), ==, (mask))
+#define assert_bit_clear(data, mask) g_assert_cmphex((data) & (mask), ==, 0)
+
+static char tmp_path[] = "/tmp/qtest.XXXXXX";
+
+static void ide_test_start(const char *cmdline_fmt, ...)
+{
+    va_list ap;
+    char *cmdline;
+
+    va_start(ap, cmdline_fmt);
+    cmdline = g_strdup_vprintf(cmdline_fmt, ap);
+    va_end(ap);
+
+    qtest_start(cmdline);
+    qtest_irq_intercept_in(global_qtest, "ioapic");
+}
+
+static void ide_test_quit(void)
+{
+    qtest_quit(global_qtest);
+}
+
+static void test_identify(void)
+{
+    uint8_t data;
+    uint16_t buf[256];
+    int i;
+    int ret;
+
+    ide_test_start(
+        "-vnc none "
+        "-drive file=%s,if=ide,serial=%s,cache=writeback "
+        "-global ide-hd.ver=%s",
+        tmp_path, "testdisk", "version");
+
+    /* IDENTIFY command on device 0*/
+    outb(IDE_BASE + reg_device, 0);
+    outb(IDE_BASE + reg_command, CMD_IDENTIFY);
+
+    /* Read in the IDENTIFY buffer and check registers */
+    data = inb(IDE_BASE + reg_device);
+    g_assert_cmpint(data & 0x10, ==, 0);
+
+    for (i = 0; i < 256; i++) {
+        data = inb(IDE_BASE + reg_status);
+        assert_bit_set(data, DRDY | DRQ);
+        assert_bit_clear(data, BSY | DF | ERR);
+
+        ((uint16_t*) buf)[i] = inw(IDE_BASE + reg_data);
+    }
+
+    data = inb(IDE_BASE + reg_status);
+    assert_bit_set(data, DRDY);
+    assert_bit_clear(data, BSY | DF | ERR | DRQ);
+
+    /* Check serial number/version in the buffer */
+    ret = memcmp(&buf[10], "ettsidks            ", 20);
+    g_assert(ret == 0);
+
+    ret = memcmp(&buf[23], "evsroi n", 8);
+    g_assert(ret == 0);
+
+    /* Write cache enabled bit */
+    assert_bit_set(buf[85], 0x20);
+
+    ide_test_quit();
+}
+
+int main(int argc, char **argv)
+{
+    const char *arch = qtest_get_arch();
+    int fd;
+    int ret;
+
+    /* Check architecture */
+    if (strcmp(arch, "i386") && strcmp(arch, "x86_64")) {
+        g_test_message("Skipping test for non-x86\n");
+        return 0;
+    }
+
+    /* Create a temporary raw image */
+    fd = mkstemp(tmp_path);
+    g_assert(fd >= 0);
+    ret = ftruncate(fd, TEST_IMAGE_SIZE);
+    g_assert(ret == 0);
+    close(fd);
+
+    /* Run the tests */
+    g_test_init(&argc, &argv, NULL);
+
+    qtest_add_func("/ide/identify", test_identify);
+
+    ret = g_test_run();
+
+    /* Cleanup */
+    unlink(tmp_path);
+
+    return ret;
+}