[RFC PATCH 25/25] qtest/cxl: Add very basic sanity tests

[Ben Widawsky <ben.widawsky@intel.com>]

Signed-off-by: Ben Widawsky <ben.widawsky@intel.com>
---
 tests/qtest/cxl-test.c  | 93 +++++++++++++++++++++++++++++++++++++++++
 tests/qtest/meson.build |  4 ++
 2 files changed, 97 insertions(+)
 create mode 100644 tests/qtest/cxl-test.c

diff --git a/tests/qtest/cxl-test.c b/tests/qtest/cxl-test.c
new file mode 100644
index 0000000000..00eca14faa
--- /dev/null
+++ b/tests/qtest/cxl-test.c
@@ -0,0 +1,93 @@
+/*
+ * QTest testcase for CXL
+ *
+ * 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 "qemu/osdep.h"
+#include "libqtest-single.h"
+
+#define QEMU_PXB_CMD "-machine q35 -object memory-backend-file,id=cxl-mem1," \
+                     "share,mem-path=%s,size=512M "                          \
+                     "-device pxb-cxl,id=cxl.0,bus=pcie.0,bus_nr=52,uid=0,"  \
+                     "len-window-base=1,window-base[0]=0x4c0000000,memdev[0]=cxl-mem1"
+#define QEMU_RP "-device cxl-rp,id=rp0,bus=cxl.0,addr=0.0,chassis=0,slot=0"
+
+#define QEMU_T3D "-device cxl-type3,bus=rp0,memdev=cxl-mem1,id=cxl-pmem0,size=256M"
+
+static void cxl_basic_hb(void)
+{
+    qtest_start("-machine q35,cxl");
+    qtest_end();
+}
+
+static void cxl_basic_pxb(void)
+{
+    qtest_start("-machine q35 -device pxb-cxl,bus=pcie.0,uid=0");
+    qtest_end();
+}
+
+static void cxl_pxb_with_window(void)
+{
+    GString *cmdline;
+    char template[] = "/tmp/cxl-test-XXXXXX";
+    const char *tmpfs;
+
+    tmpfs = mkdtemp(template);
+
+    cmdline = g_string_new(NULL);
+    g_string_printf(cmdline, QEMU_PXB_CMD, tmpfs);
+
+    qtest_start(cmdline->str);
+    qtest_end();
+
+    g_string_free(cmdline, TRUE);
+}
+
+static void cxl_root_port(void)
+{
+    GString *cmdline;
+    char template[] = "/tmp/cxl-test-XXXXXX";
+    const char *tmpfs;
+
+    tmpfs = mkdtemp(template);
+
+    cmdline = g_string_new(NULL);
+    g_string_printf(cmdline, QEMU_PXB_CMD " %s", tmpfs, QEMU_RP);
+
+    qtest_start(cmdline->str);
+    qtest_end();
+
+    g_string_free(cmdline, TRUE);
+}
+
+static void cxl_t3d(void)
+{
+    GString *cmdline;
+    char template[] = "/tmp/cxl-test-XXXXXX";
+    const char *tmpfs;
+
+    tmpfs = mkdtemp(template);
+
+    cmdline = g_string_new(NULL);
+    g_string_printf(cmdline, QEMU_PXB_CMD " %s %s", tmpfs, QEMU_RP, QEMU_T3D);
+
+    qtest_start(cmdline->str);
+    qtest_end();
+
+    g_string_free(cmdline, TRUE);
+}
+
+int main(int argc, char **argv)
+{
+    g_test_init(&argc, &argv, NULL);
+
+    qtest_add_func("/pci/cxl/basic_hostbridge", cxl_basic_hb);
+    qtest_add_func("/pci/cxl/basic_pxb", cxl_basic_pxb);
+    qtest_add_func("/pci/cxl/pxb_with_window", cxl_pxb_with_window);
+    qtest_add_func("/pci/cxl/root_port", cxl_root_port);
+    qtest_add_func("/pci/cxl/type3_device", cxl_t3d);
+
+    return g_test_run();
+}
diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build
index c19f1c8503..7c6439b45c 100644
--- a/tests/qtest/meson.build
+++ b/tests/qtest/meson.build
@@ -22,6 +22,9 @@ qtests_pci = \
   (config_all_devices.has_key('CONFIG_VGA') ? ['display-vga-test'] : []) +                  \
   (config_all_devices.has_key('CONFIG_IVSHMEM_DEVICE') ? ['ivshmem-test'] : [])
 
+qtests_cxl = \
+  (config_all_devices.has_key('CONFIG_CXL') ? ['cxl-test'] : [])
+
 qtests_i386 = \
   (slirp.found() ? ['pxe-test', 'test-netfilter'] : []) +             \
   (config_host.has_key('CONFIG_POSIX') ? ['test-filter-mirror'] : []) +                     \
@@ -47,6 +50,7 @@ qtests_i386 = \
   (config_all_devices.has_key('CONFIG_TPM_TIS_ISA') ? ['tpm-tis-swtpm-test'] : []) +        \
   (config_all_devices.has_key('CONFIG_RTL8139_PCI') ? ['rtl8139-test'] : []) +              \
   qtests_pci +                                                                              \
+  qtests_cxl +                                                                              \
   ['fdc-test',
    'ide-test',
    'hd-geo-test',
-- 
2.29.2