1 files changed, 111 insertions, 0 deletions
diff --git a/tests/qtest/sdhci-test.c b/tests/qtest/sdhci-test.c
new file mode 100644
index 0000000..6275e76
--- /dev/null
+++ b/tests/qtest/sdhci-test.c
@@ -0,0 +1,111 @@
+/*
+ * QTest testcase for SDHCI controllers
+ *
+ * Written by Philippe Mathieu-Daudé <f4bug@amsat.org>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "qemu/osdep.h"
+#include "hw/registerfields.h"
+#include "libqtest.h"
+#include "qemu/module.h"
+#include "libqos/pci-pc.h"
+#include "hw/pci/pci.h"
+#include "libqos/qgraph.h"
+#include "libqos/sdhci.h"
+
+#define SDHC_CAPAB                      0x40
+FIELD(SDHC_CAPAB, BASECLKFREQ,               8, 8); /* since v2 */
+FIELD(SDHC_CAPAB, SDMA,                     22, 1);
+FIELD(SDHC_CAPAB, SDR,                      32, 3); /* since v3 */
+FIELD(SDHC_CAPAB, DRIVER,                   36, 3); /* since v3 */
+#define SDHC_HCVER                      0xFE
+
+static void check_specs_version(QSDHCI *s, uint8_t version)
+{
+    uint32_t v;
+
+    v = s->readw(s, SDHC_HCVER);
+    v &= 0xff;
+    v += 1;
+    g_assert_cmpuint(v, ==, version);
+}
+
+static void check_capab_capareg(QSDHCI *s, uint64_t expec_capab)
+{
+    uint64_t capab;
+
+    capab = s->readq(s, SDHC_CAPAB);
+    g_assert_cmphex(capab, ==, expec_capab);
+}
+
+static void check_capab_readonly(QSDHCI *s)
+{
+    const uint64_t vrand = 0x123456789abcdef;
+    uint64_t capab0, capab1;
+
+    capab0 = s->readq(s, SDHC_CAPAB);
+    g_assert_cmpuint(capab0, !=, vrand);
+
+    s->writeq(s, SDHC_CAPAB, vrand);
+    capab1 = s->readq(s, SDHC_CAPAB);
+    g_assert_cmpuint(capab1, !=, vrand);
+    g_assert_cmpuint(capab1, ==, capab0);
+}
+
+static void check_capab_baseclock(QSDHCI *s, uint8_t expec_freq)
+{
+    uint64_t capab, capab_freq;
+
+    if (!expec_freq) {
+        return;
+    }
+    capab = s->readq(s, SDHC_CAPAB);
+    capab_freq = FIELD_EX64(capab, SDHC_CAPAB, BASECLKFREQ);
+    g_assert_cmpuint(capab_freq, ==, expec_freq);
+}
+
+static void check_capab_sdma(QSDHCI *s, bool supported)
+{
+    uint64_t capab, capab_sdma;
+
+    capab = s->readq(s, SDHC_CAPAB);
+    capab_sdma = FIELD_EX64(capab, SDHC_CAPAB, SDMA);
+    g_assert_cmpuint(capab_sdma, ==, supported);
+}
+
+static void check_capab_v3(QSDHCI *s, uint8_t version)
+{
+    uint64_t capab, capab_v3;
+
+    if (version < 3) {
+        /* before v3 those fields are RESERVED */
+        capab = s->readq(s, SDHC_CAPAB);
+        capab_v3 = FIELD_EX64(capab, SDHC_CAPAB, SDR);
+        g_assert_cmpuint(capab_v3, ==, 0);
+        capab_v3 = FIELD_EX64(capab, SDHC_CAPAB, DRIVER);
+        g_assert_cmpuint(capab_v3, ==, 0);
+    }
+}
+
+static void test_registers(void *obj, void *data, QGuestAllocator *alloc)
+{
+    QSDHCI *s = obj;
+
+    check_specs_version(s, s->props.version);
+    check_capab_capareg(s, s->props.capab.reg);
+    check_capab_readonly(s);
+    check_capab_v3(s, s->props.version);
+    check_capab_sdma(s, s->props.capab.sdma);
+    check_capab_baseclock(s, s->props.baseclock);
+}
+
+static void register_sdhci_test(void)
+{
+    qos_add_test("registers", "sdhci", test_registers, NULL);
+}
+
+libqos_init(register_sdhci_test);