hw: m25p80: allow write_enable latch get/set

The write_enable latch property is not currently exposed.
This commit makes it a modifiable property.

Signed-off-by: Iris Chen <irischenlj@fb.com>
Acked-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Francisco Iglesias <frasse.iglesias@gmail.com>
Message-Id: <20220513055022.951759-1-irischenlj@fb.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>

hw/block/m25p80.c

@@ -1533,6 +1533,7 @@ static int m25p80_pre_save(void *opaque)
 
 static Property m25p80_properties[] = {
     /* This is default value for Micron flash */
+    DEFINE_PROP_BOOL("write-enable", Flash, write_enable, false),
     DEFINE_PROP_UINT32("nonvolatile-cfg", Flash, nonvolatile_cfg, 0x8FFF),
     DEFINE_PROP_UINT8("spansion-cr1nv", Flash, spansion_cr1nv, 0x0),
     DEFINE_PROP_UINT8("spansion-cr2nv", Flash, spansion_cr2nv, 0x8),

tests/qtest/aspeed_gpio-test.c

@@ -28,30 +28,6 @@
 #include "qapi/qmp/qdict.h"
 #include "libqtest-single.h"
 
-static bool qom_get_bool(QTestState *s, const char *path, const char *property)
-{
-    QDict *r;
-    bool b;
-
-    r = qtest_qmp(s, "{ 'execute': 'qom-get', 'arguments': "
-                     "{ 'path': %s, 'property': %s } }", path, property);
-    b = qdict_get_bool(r, "return");
-    qobject_unref(r);
-
-    return b;
-}
-
-static void qom_set_bool(QTestState *s, const char *path, const char *property,
-                         bool value)
-{
-    QDict *r;
-
-    r = qtest_qmp(s, "{ 'execute': 'qom-set', 'arguments': "
-                     "{ 'path': %s, 'property': %s, 'value': %i } }",
-                     path, property, value);
-    qobject_unref(r);
-}
-
 static void test_set_colocated_pins(const void *data)
 {
     QTestState *s = (QTestState *)data;
@@ -60,14 +36,14 @@ static void test_set_colocated_pins(const void *data)
      * gpioV4-7 occupy bits within a single 32-bit value, so we want to make
      * sure that modifying one doesn't affect the other.
      */
-    qom_set_bool(s, "/machine/soc/gpio", "gpioV4", true);
-    qom_set_bool(s, "/machine/soc/gpio", "gpioV5", false);
-    qom_set_bool(s, "/machine/soc/gpio", "gpioV6", true);
-    qom_set_bool(s, "/machine/soc/gpio", "gpioV7", false);
-    g_assert(qom_get_bool(s, "/machine/soc/gpio", "gpioV4"));
-    g_assert(!qom_get_bool(s, "/machine/soc/gpio", "gpioV5"));
-    g_assert(qom_get_bool(s, "/machine/soc/gpio", "gpioV6"));
-    g_assert(!qom_get_bool(s, "/machine/soc/gpio", "gpioV7"));
+    qtest_qom_set_bool(s, "/machine/soc/gpio", "gpioV4", true);
+    qtest_qom_set_bool(s, "/machine/soc/gpio", "gpioV5", false);
+    qtest_qom_set_bool(s, "/machine/soc/gpio", "gpioV6", true);
+    qtest_qom_set_bool(s, "/machine/soc/gpio", "gpioV7", false);
+    g_assert(qtest_qom_get_bool(s, "/machine/soc/gpio", "gpioV4"));
+    g_assert(!qtest_qom_get_bool(s, "/machine/soc/gpio", "gpioV5"));
+    g_assert(qtest_qom_get_bool(s, "/machine/soc/gpio", "gpioV6"));
+    g_assert(!qtest_qom_get_bool(s, "/machine/soc/gpio", "gpioV7"));
 }
 
 int main(int argc, char **argv)

tests/qtest/aspeed_smc-test.c

@@ -26,6 +26,7 @@
 #include "qemu/osdep.h"
 #include "qemu/bswap.h"
 #include "libqtest-single.h"
+#include "qemu/bitops.h"
 
 /*
  * ASPEED SPI Controller registers
@@ -40,6 +41,7 @@
 #define   CTRL_FREADMODE       0x1
 #define   CTRL_WRITEMODE       0x2
 #define   CTRL_USERMODE        0x3
+#define SR_WEL BIT(1)
 
 #define ASPEED_FMC_BASE    0x1E620000
 #define ASPEED_FLASH_BASE  0x20000000
@@ -49,6 +51,8 @@
  */
 enum {
     JEDEC_READ = 0x9f,
+    RDSR = 0x5,
+    WRDI = 0x4,
     BULK_ERASE = 0xc7,
     READ = 0x03,
     PP = 0x02,
@@ -348,6 +352,44 @@ static void test_write_page_mem(void)
     flash_reset();
 }
 
+static void test_read_status_reg(void)
+{
+    uint8_t r;
+
+    spi_conf(CONF_ENABLE_W0);
+
+    spi_ctrl_start_user();
+    writeb(ASPEED_FLASH_BASE, RDSR);
+    r = readb(ASPEED_FLASH_BASE);
+    spi_ctrl_stop_user();
+
+    g_assert_cmphex(r & SR_WEL, ==, 0);
+    g_assert(!qtest_qom_get_bool
+            (global_qtest, "/machine/soc/fmc/ssi.0/child[0]", "write-enable"));
+
+    spi_ctrl_start_user();
+    writeb(ASPEED_FLASH_BASE, WREN);
+    writeb(ASPEED_FLASH_BASE, RDSR);
+    r = readb(ASPEED_FLASH_BASE);
+    spi_ctrl_stop_user();
+
+    g_assert_cmphex(r & SR_WEL, ==, SR_WEL);
+    g_assert(qtest_qom_get_bool
+            (global_qtest, "/machine/soc/fmc/ssi.0/child[0]", "write-enable"));
+
+    spi_ctrl_start_user();
+    writeb(ASPEED_FLASH_BASE, WRDI);
+    writeb(ASPEED_FLASH_BASE, RDSR);
+    r = readb(ASPEED_FLASH_BASE);
+    spi_ctrl_stop_user();
+
+    g_assert_cmphex(r & SR_WEL, ==, 0);
+    g_assert(!qtest_qom_get_bool
+            (global_qtest, "/machine/soc/fmc/ssi.0/child[0]", "write-enable"));
+
+    flash_reset();
+}
+
 static char tmp_path[] = "/tmp/qtest.m25p80.XXXXXX";
 
 int main(int argc, char **argv)
@@ -373,6 +415,7 @@ int main(int argc, char **argv)
     qtest_add_func("/ast2400/smc/write_page", test_write_page);
     qtest_add_func("/ast2400/smc/read_page_mem", test_read_page_mem);
     qtest_add_func("/ast2400/smc/write_page_mem", test_write_page_mem);
+    qtest_add_func("/ast2400/smc/read_status_reg", test_read_status_reg);
 
     ret = g_test_run();
 

tests/qtest/libqtest.c

@@ -1440,3 +1440,27 @@ void qtest_client_inproc_recv(void *opaque, const char *str)
     g_string_append(qts->rx, str);
     return;
 }
+
+void qtest_qom_set_bool(QTestState *s, const char *path, const char *property,
+                         bool value)
+{
+    QDict *r;
+
+    r = qtest_qmp(s, "{ 'execute': 'qom-set', 'arguments': "
+                     "{ 'path': %s, 'property': %s, 'value': %i } }",
+                     path, property, value);
+    qobject_unref(r);
+}
+
+bool qtest_qom_get_bool(QTestState *s, const char *path, const char *property)
+{
+    QDict *r;
+    bool b;
+
+    r = qtest_qmp(s, "{ 'execute': 'qom-get', 'arguments': "
+                     "{ 'path': %s, 'property': %s } }", path, property);
+    b = qdict_get_bool(r, "return");
+    qobject_unref(r);
+
+    return b;
+}

tests/qtest/libqtest.h

@@ -783,4 +783,26 @@ QTestState *qtest_inproc_init(QTestState **s, bool log, const char* arch,
                     void (*send)(void*, const char*));
 
 void qtest_client_inproc_recv(void *opaque, const char *str);
+
+/**
+ * qtest_qom_set_bool:
+ * @s: QTestState instance to operate on.
+ * @path: Path to the property being set.
+ * @property: Property being set.
+ * @value: Value to set the property.
+ *
+ * Set the property with passed in value.
+ */
+void qtest_qom_set_bool(QTestState *s, const char *path, const char *property,
+                         bool value);
+
+/**
+ * qtest_qom_get_bool:
+ * @s: QTestState instance to operate on.
+ * @path: Path to the property being retrieved.
+ * @property: Property from where the value is being retrieved.
+ *
+ * Returns: Value retrieved from property.
+ */
+bool qtest_qom_get_bool(QTestState *s, const char *path, const char *property);
 #endif