[PATCH v7 22/46] qtests/cxl: Add initial root port and CXL type3 tests

[Jonathan Cameron]

At this stage we can boot configurations with host bridges,
root ports and type 3 memory devices, so add appropriate
tests.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
---
v7: Patch moved from 18 to 22 as we need LSA support in place to avoid
    introducing backwards compatibility issues.
* Use g_autoptr() to avoid need for explicit free in tests (Alex)

 tests/qtest/cxl-test.c | 126 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)

diff --git a/tests/qtest/cxl-test.c b/tests/qtest/cxl-test.c
index 1006c8ae4e..148bc94340 100644
--- a/tests/qtest/cxl-test.c
+++ b/tests/qtest/cxl-test.c
@@ -8,6 +8,54 @@
 #include "qemu/osdep.h"
 #include "libqtest-single.h"
 
+#define QEMU_PXB_CMD "-machine q35,cxl=on " \
+                     "-device pxb-cxl,id=cxl.0,bus=pcie.0,bus_nr=52 "
+
+#define QEMU_2PXB_CMD "-machine q35,cxl=on " \
+                      "-device pxb-cxl,id=cxl.0,bus=pcie.0,bus_nr=52 "  \
+                      "-device pxb-cxl,id=cxl.1,bus=pcie.0,bus_nr=53 "
+
+#define QEMU_RP "-device cxl-rp,id=rp0,bus=cxl.0,chassis=0,slot=0 "
+
+/* Dual ports on first pxb */
+#define QEMU_2RP "-device cxl-rp,id=rp0,bus=cxl.0,chassis=0,slot=0 " \
+                 "-device cxl-rp,id=rp1,bus=cxl.0,chassis=0,slot=1 "
+
+/* Dual ports on each of the pxb instances */
+#define QEMU_4RP "-device cxl-rp,id=rp0,bus=cxl.0,chassis=0,slot=0 " \
+                 "-device cxl-rp,id=rp1,bus=cxl.0,chassis=0,slot=1 " \
+                 "-device cxl-rp,id=rp2,bus=cxl.1,chassis=0,slot=2 " \
+                 "-device cxl-rp,id=rp3,bus=cxl.1,chassis=0,slot=3 "
+
+#define QEMU_T3D "-object 
memory-backend-file,id=cxl-mem0,mem-path=%s,size=256M " \
+                 "-object memory-backend-file,id=lsa0,mem-path=%s,size=256M "  
  \
+                 "-device 
cxl-type3,bus=rp0,memdev=cxl-mem0,lsa=lsa0,id=cxl-pmem0,size=256M "
+
+#define QEMU_2T3D "-object 
memory-backend-file,id=cxl-mem0,mem-path=%s,size=256M "    \
+                  "-object memory-backend-file,id=lsa0,mem-path=%s,size=256M " 
   \
+                  "-device 
cxl-type3,bus=rp0,memdev=cxl-mem0,lsa=lsa0,id=cxl-pmem0,size=256M " \
+                  "-object 
memory-backend-file,id=cxl-mem1,mem-path=%s,size=256M "    \
+                  "-object memory-backend-file,id=lsa1,mem-path=%s,size=256M " 
   \
+                  "-device 
cxl-type3,bus=rp1,memdev=cxl-mem1,lsa=lsa1,id=cxl-pmem1,size=256M "
+
+#define QEMU_4T3D "-object 
memory-backend-file,id=cxl-mem0,mem-path=%s,size=256M " \
+                  "-object memory-backend-file,id=lsa0,mem-path=%s,size=256M " 
   \
+                  "-device 
cxl-type3,bus=rp0,memdev=cxl-mem0,lsa=lsa0,id=cxl-pmem0,size=256M " \
+                  "-object 
memory-backend-file,id=cxl-mem1,mem-path=%s,size=256M "    \
+                  "-object memory-backend-file,id=lsa1,mem-path=%s,size=256M " 
   \
+                  "-device 
cxl-type3,bus=rp1,memdev=cxl-mem1,lsa=lsa1,id=cxl-pmem1,size=256M " \
+                  "-object 
memory-backend-file,id=cxl-mem2,mem-path=%s,size=256M "    \
+                  "-object memory-backend-file,id=lsa2,mem-path=%s,size=256M " 
   \
+                  "-device 
cxl-type3,bus=rp2,memdev=cxl-mem2,lsa=lsa2,id=cxl-pmem2,size=256M " \
+                  "-object 
memory-backend-file,id=cxl-mem3,mem-path=%s,size=256M "    \
+                  "-object memory-backend-file,id=lsa3,mem-path=%s,size=256M " 
   \
+                  "-device 
cxl-type3,bus=rp3,memdev=cxl-mem3,lsa=lsa3,id=cxl-pmem3,size=256M "
+
+static void cxl_basic_hb(void)
+{
+    qtest_start("-machine q35,cxl=on");
+    qtest_end();
+}
 
 static void cxl_basic_pxb(void)
 {
@@ -15,9 +63,87 @@ static void cxl_basic_pxb(void)
     qtest_end();
 }
 
+static void cxl_pxb_with_window(void)
+{
+    qtest_start(QEMU_PXB_CMD);
+    qtest_end();
+}
+
+static void cxl_2pxb_with_window(void)
+{
+    qtest_start(QEMU_2PXB_CMD);
+    qtest_end();
+}
+
+static void cxl_root_port(void)
+{
+    qtest_start(QEMU_PXB_CMD QEMU_RP);
+    qtest_end();
+}
+
+static void cxl_2root_port(void)
+{
+    qtest_start(QEMU_PXB_CMD QEMU_2RP);
+    qtest_end();
+}
+
+static void cxl_t3d(void)
+{
+    g_autoptr(GString) cmdline = g_string_new(NULL);
+    char template[] = "/tmp/cxl-test-XXXXXX";
+    const char *tmpfs;
+
+    tmpfs = mkdtemp(template);
+
+    g_string_printf(cmdline, QEMU_PXB_CMD QEMU_RP QEMU_T3D, tmpfs, tmpfs);
+
+    qtest_start(cmdline->str);
+    qtest_end();
+}
+
+static void cxl_1pxb_2rp_2t3d(void)
+{
+    g_autoptr(GString) cmdline = g_string_new(NULL);
+    char template[] = "/tmp/cxl-test-XXXXXX";
+    const char *tmpfs;
+
+    tmpfs = mkdtemp(template);
+
+    g_string_printf(cmdline, QEMU_PXB_CMD QEMU_2RP QEMU_2T3D,
+                    tmpfs, tmpfs, tmpfs, tmpfs);
+
+    qtest_start(cmdline->str);
+    qtest_end();
+}
+
+static void cxl_2pxb_4rp_4t3d(void)
+{
+    g_autoptr(GString) cmdline = g_string_new(NULL);
+    char template[] = "/tmp/cxl-test-XXXXXX";
+    const char *tmpfs;
+
+    tmpfs = mkdtemp(template);
+
+    g_string_printf(cmdline, QEMU_2PXB_CMD QEMU_4RP QEMU_4T3D,
+                    tmpfs, tmpfs, tmpfs, tmpfs, tmpfs, tmpfs,
+                    tmpfs, tmpfs);
+
+    qtest_start(cmdline->str);
+    qtest_end();
+}
+
 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/pxb_x2_with_window", cxl_2pxb_with_window);
+    qtest_add_func("/pci/cxl/rp", cxl_root_port);
+    qtest_add_func("/pci/cxl/rp_x2", cxl_2root_port);
+    qtest_add_func("/pci/cxl/type3_device", cxl_t3d);
+    qtest_add_func("/pci/cxl/rp_x2_type3_x2", cxl_1pxb_2rp_2t3d);
+    qtest_add_func("/pci/cxl/pxb_x2_root_port_x4_type3_x4", cxl_2pxb_4rp_4t3d);
     return g_test_run();
 }
-- 
2.32.0