i440fx-test: add test to compare default register values

This test compares all of the default register values against the
spec.  It turns out we deviate in quite a few places.  These
places are really only visible to the BIOS though which is why
this hasn't created any problems.

The deviation actually happens in the core PCI layer so I suspect
it's not a simple fix if we really care to fix it.  For now, just
disable the affected checks.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Message-id: 1366123521-4330-6-git-send-email-aliguori@us.ibm.com

2 files changed, 150 insertions, 0 deletions

diff --git a/tests/Makefile b/tests/Makefile
index cafbb2726f..6c4b9103e9 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -54,6 +54,7 @@ gcov-files-i386-y = hw/fdc.c
 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)
+check-qtest-i386-y += tests/i440fx-test$(EXESUF)
 check-qtest-x86_64-y = $(check-qtest-i386-y)
 gcov-files-i386-y += i386-softmmu/hw/mc146818rtc.c
 gcov-files-x86_64-y = $(subst i386-softmmu/,x86_64-softmmu/,$(gcov-files-i386-y))
@@ -125,6 +126,7 @@ tests/m48t59-test$(EXESUF): tests/m48t59-test.o
 tests/fdc-test$(EXESUF): tests/fdc-test.o
 tests/hd-geo-test$(EXESUF): tests/hd-geo-test.o
 tests/tmp105-test$(EXESUF): tests/tmp105-test.o
+tests/i440fx-test$(EXESUF): tests/i440fx-test.o $(libqos-pc-obj-y)
 
 # QTest rules
 
diff --git a/tests/i440fx-test.c b/tests/i440fx-test.c
new file mode 100644
index 0000000000..6fba741d97
--- /dev/null
+++ b/tests/i440fx-test.c
@@ -0,0 +1,148 @@
+/*
+ * qtest I440FX test case
+ *
+ * Copyright IBM, Corp. 2012-2013
+ *
+ * Authors:
+ *  Anthony Liguori   <aliguori@us.ibm.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.
+ */
+
+#include "libqos/pci.h"
+#include "libqos/pci-pc.h"
+#include "libqtest.h"
+
+#include "hw/pci/pci_regs.h"
+
+#include <glib.h>
+#include <stdio.h>
+
+#define BROKEN 1
+
+typedef struct TestData
+{
+    int num_cpus;
+    QPCIBus *bus;
+} TestData;
+
+static void test_i440fx_defaults(gconstpointer opaque)
+{
+    const TestData *s = opaque;
+    QPCIDevice *dev;
+    uint32_t value;
+
+    dev = qpci_device_find(s->bus, QPCI_DEVFN(0, 0));
+    g_assert(dev != NULL);
+
+    /* 3.2.2 */
+    g_assert_cmpint(qpci_config_readw(dev, PCI_VENDOR_ID), ==, 0x8086);
+    /* 3.2.3 */
+    g_assert_cmpint(qpci_config_readw(dev, PCI_DEVICE_ID), ==, 0x1237);
+#ifndef BROKEN
+    /* 3.2.4 */
+    g_assert_cmpint(qpci_config_readw(dev, PCI_COMMAND), ==, 0x0006);
+    /* 3.2.5 */
+    g_assert_cmpint(qpci_config_readw(dev, PCI_STATUS), ==, 0x0280);
+#endif
+    /* 3.2.7 */
+    g_assert_cmpint(qpci_config_readb(dev, PCI_CLASS_PROG), ==, 0x00);
+    g_assert_cmpint(qpci_config_readw(dev, PCI_CLASS_DEVICE), ==, 0x0600);
+    /* 3.2.8 */
+    g_assert_cmpint(qpci_config_readb(dev, PCI_LATENCY_TIMER), ==, 0x00);
+    /* 3.2.9 */
+    g_assert_cmpint(qpci_config_readb(dev, PCI_HEADER_TYPE), ==, 0x00);
+    /* 3.2.10 */
+    g_assert_cmpint(qpci_config_readb(dev, PCI_BIST), ==, 0x00);
+
+    /* 3.2.11 */
+    value = qpci_config_readw(dev, 0x50); /* PMCCFG */
+    if (s->num_cpus == 1) { /* WPE */
+        g_assert(!(value & (1 << 15)));
+    } else {
+        g_assert((value & (1 << 15)));
+    }
+
+    g_assert(!(value & (1 << 6))); /* EPTE */
+
+    /* 3.2.12 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x52), ==, 0x00); /* DETURBO */
+    /* 3.2.13 */
+#ifndef BROKEN
+    g_assert_cmpint(qpci_config_readb(dev, 0x53), ==, 0x80); /* DBC */
+#endif
+    /* 3.2.14 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x54), ==, 0x00); /* AXC */
+    /* 3.2.15 */
+    g_assert_cmpint(qpci_config_readw(dev, 0x55), ==, 0x0000); /* DRT */
+#ifndef BROKEN
+    /* 3.2.16 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x57), ==, 0x01); /* DRAMC */
+    /* 3.2.17 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x58), ==, 0x10); /* DRAMT */
+#endif
+    /* 3.2.18 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x59), ==, 0x00); /* PAM0 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x5A), ==, 0x00); /* PAM1 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x5B), ==, 0x00); /* PAM2 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x5C), ==, 0x00); /* PAM3 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x5D), ==, 0x00); /* PAM4 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x5E), ==, 0x00); /* PAM5 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x5F), ==, 0x00); /* PAM6 */
+#ifndef BROKEN
+    /* 3.2.19 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x60), ==, 0x01); /* DRB0 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x61), ==, 0x01); /* DRB1 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x62), ==, 0x01); /* DRB2 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x63), ==, 0x01); /* DRB3 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x64), ==, 0x01); /* DRB4 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x65), ==, 0x01); /* DRB5 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x66), ==, 0x01); /* DRB6 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x67), ==, 0x01); /* DRB7 */
+#endif
+    /* 3.2.20 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x68), ==, 0x00); /* FDHC */
+    /* 3.2.21 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x70), ==, 0x00); /* MTT */
+#ifndef BROKEN
+    /* 3.2.22 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x71), ==, 0x10); /* CLT */
+#endif
+    /* 3.2.23 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x72), ==, 0x02); /* SMRAM */
+    /* 3.2.24 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x90), ==, 0x00); /* ERRCMD */
+    /* 3.2.25 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x91), ==, 0x00); /* ERRSTS */
+    /* 3.2.26 */
+    g_assert_cmpint(qpci_config_readb(dev, 0x93), ==, 0x00); /* TRC */
+}
+
+int main(int argc, char **argv)
+{
+    QTestState *s;
+    TestData data;
+    char *cmdline;
+    int ret;
+
+    g_test_init(&argc, &argv, NULL);
+
+    data.num_cpus = 1;
+
+    cmdline = g_strdup_printf("-display none -smp %d", data.num_cpus);
+    s = qtest_start(cmdline);
+    g_free(cmdline);
+
+    data.bus = qpci_init_pc();
+
+    g_test_add_data_func("/i440fx/defaults", &data, test_i440fx_defaults);
+
+    ret = g_test_run();
+
+    if (s) {
+        qtest_quit(s);
+    }
+
+    return ret;
+}