[PATCH v3 3/6] qtest: implement named interception of out-GPIO

[Chris Laplante <chris@laplante.io>]

Adds qtest_irq_intercept_out_named method, which utilizes a new optional
name parameter to the irq_intercept_out qtest command.

Signed-off-by: Chris Laplante <chris@laplante.io>
---
 softmmu/qtest.c        | 18 ++++++++++--------
 tests/qtest/libqtest.c |  6 ++++++
 tests/qtest/libqtest.h | 11 +++++++++++
 3 files changed, 27 insertions(+), 8 deletions(-)

diff --git a/softmmu/qtest.c b/softmmu/qtest.c
index 1b86489162..0f1d478bda 100644
--- a/softmmu/qtest.c
+++ b/softmmu/qtest.c
@@ -397,8 +397,10 @@ static void qtest_process_command(CharBackend *chr, gchar **words)
         || strcmp(words[0], "irq_intercept_in") == 0) {
         DeviceState *dev;
         NamedGPIOList *ngl;
+        bool is_outbound;
 
         g_assert(words[1]);
+        is_outbound = words[0][14] == 'o';
         dev = DEVICE(object_resolve_path(words[1], NULL));
         if (!dev) {
             qtest_send_prefix(chr);
@@ -417,14 +419,14 @@ static void qtest_process_command(CharBackend *chr, gchar **words)
         }
 
         QLIST_FOREACH(ngl, &dev->gpios, node) {
-            /* We don't support intercept of named GPIOs yet */
-            if (ngl->name) {
-                continue;
-            }
-            if (words[0][14] == 'o') {
-                int i;
-                for (i = 0; i < ngl->num_out; ++i) {
-                    qtest_install_gpio_out_intercept(dev, ngl->name, i);
+            /* We don't support inbound interception of named GPIOs yet */
+            if (is_outbound) {
+                /* NULL is valid and matchable, for "unnamed GPIO" */
+                if (g_strcmp0(ngl->name, words[2]) == 0) {
+                    int i;
+                    for (i = 0; i < ngl->num_out; ++i) {
+                        qtest_install_gpio_out_intercept(dev, ngl->name, i);
+                    }
                 }
             } else {
                 qemu_irq_intercept_in(ngl->in, qtest_irq_handler,
diff --git a/tests/qtest/libqtest.c b/tests/qtest/libqtest.c
index c22dfc30d3..471529e6cc 100644
--- a/tests/qtest/libqtest.c
+++ b/tests/qtest/libqtest.c
@@ -993,6 +993,12 @@ void qtest_irq_intercept_out(QTestState *s, const char *qom_path)
     qtest_rsp(s);
 }
 
+void qtest_irq_intercept_out_named(QTestState *s, const char *qom_path, const char *name)
+{
+    qtest_sendf(s, "irq_intercept_out %s %s\n", qom_path, name);
+    qtest_rsp(s);
+}
+
 void qtest_irq_intercept_in(QTestState *s, const char *qom_path)
 {
     qtest_sendf(s, "irq_intercept_in %s\n", qom_path);
diff --git a/tests/qtest/libqtest.h b/tests/qtest/libqtest.h
index 3a71bc45fc..e53e350e3a 100644
--- a/tests/qtest/libqtest.h
+++ b/tests/qtest/libqtest.h
@@ -371,6 +371,17 @@ void qtest_irq_intercept_in(QTestState *s, const char *string);
  */
 void qtest_irq_intercept_out(QTestState *s, const char *string);
 
+/**
+ * qtest_irq_intercept_out_named:
+ * @s: #QTestState instance to operate on.
+ * @qom_path: QOM path of a device.
+ * @name: Name of the GPIO out pin
+ *
+ * Associate a qtest irq with the named GPIO-out pin of the device
+ * whose path is specified by @string and whose name is @name.
+ */
+void qtest_irq_intercept_out_named(QTestState *s, const char *qom_path, const char *name);
+
 /**
  * qtest_set_irq_in:
  * @s: QTestState instance to operate on.
-- 
2.41.0