[PULL 03/84] arm/stm32f405: Fix realization of "stm32f2xx-adc" devices

[Markus Armbruster]

stm32f405_soc_initfn() creates six such devices, but
stm32f405_soc_realize() realizes only one.  Affects machine
netduinoplus2.

In theory, a device becomes real only on realize.  In practice, the
transition from unreal to real is a fuzzy one.  The work to make a
device real can be spread between realize methods (fine),
instance_init methods (wrong), and board code wiring up the device
(fine as long as it effectively happens on realize).  Depending on
what exactly is done where, a device can work even when we neglect
to realize it.

The five unrealized devices appear to stay unreal: neither MMIO nor
IRQ get wired up.

Fix stm32f405_soc_realize() to realize and wire up all six.  Visible
in "info qtree":

     bus: main-system-bus
       type System
       dev: stm32f405-soc, id ""
         cpu-type = "cortex-m4-arm-cpu"
       dev: stm32f2xx-adc, id ""
         gpio-out "sysbus-irq" 1
    -    mmio ffffffffffffffff/00000000000000ff
    +    mmio 0000000040012000/00000000000000ff
       dev: stm32f2xx-adc, id ""
         gpio-out "sysbus-irq" 1
    -    mmio ffffffffffffffff/00000000000000ff
    +    mmio 0000000040012100/00000000000000ff
       dev: stm32f2xx-adc, id ""
         gpio-out "sysbus-irq" 1
    -    mmio ffffffffffffffff/00000000000000ff
    +    mmio 0000000040012200/00000000000000ff
       dev: stm32f2xx-adc, id ""
         gpio-out "sysbus-irq" 1
    -    mmio ffffffffffffffff/00000000000000ff
    +    mmio 0000000040012300/00000000000000ff
       dev: stm32f2xx-adc, id ""
         gpio-out "sysbus-irq" 1
    -    mmio 0000000040012000/00000000000000ff
    +    mmio 0000000040012400/00000000000000ff
       dev: stm32f2xx-adc, id ""
         gpio-out "sysbus-irq" 1
    -    mmio ffffffffffffffff/00000000000000ff
    +    mmio 0000000040012500/00000000000000ff
       dev: armv7m, id ""

Fixes: 529fc5fd3e18ace8f739afd02dc0953354f39442
Cc: Alistair Francis <alistair@alistair23.me>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-arm@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200609122339.937862-2-armbru@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
---
 hw/arm/stm32f405_soc.c | 23 +++++++++++++----------
 1 file changed, 13 insertions(+), 10 deletions(-)

diff --git a/hw/arm/stm32f405_soc.c b/hw/arm/stm32f405_soc.c
index 4f10ce6176..c9a530eecf 100644
--- a/hw/arm/stm32f405_soc.c
+++ b/hw/arm/stm32f405_soc.c
@@ -37,7 +37,8 @@ static const uint32_t usart_addr[] = { 0x40011000, 
0x40004400, 0x40004800,
 /* At the moment only Timer 2 to 5 are modelled */
 static const uint32_t timer_addr[] = { 0x40000000, 0x40000400,
                                        0x40000800, 0x40000C00 };
-#define ADC_ADDR                       0x40012000
+static const uint32_t adc_addr[] = { 0x40012000, 0x40012100, 0x40012200,
+                                     0x40012300, 0x40012400, 0x40012500 };
 static const uint32_t spi_addr[] =   { 0x40013000, 0x40003800, 0x40003C00,
                                        0x40013400, 0x40015000, 0x40015400 };
 #define EXTI_ADDR                      0x40013C00
@@ -185,16 +186,18 @@ static void stm32f405_soc_realize(DeviceState *dev_soc, 
Error **errp)
     qdev_connect_gpio_out(DEVICE(&s->adc_irqs), 0,
                           qdev_get_gpio_in(armv7m, ADC_IRQ));
 
-    dev = DEVICE(&(s->adc[i]));
-    object_property_set_bool(OBJECT(&s->adc[i]), true, "realized", &err);
-    if (err != NULL) {
-        error_propagate(errp, err);
-        return;
+    for (i = 0; i < STM_NUM_ADCS; i++) {
+        dev = DEVICE(&(s->adc[i]));
+        object_property_set_bool(OBJECT(&s->adc[i]), true, "realized", &err);
+        if (err != NULL) {
+            error_propagate(errp, err);
+            return;
+        }
+        busdev = SYS_BUS_DEVICE(dev);
+        sysbus_mmio_map(busdev, 0, adc_addr[i]);
+        sysbus_connect_irq(busdev, 0,
+                           qdev_get_gpio_in(DEVICE(&s->adc_irqs), i));
     }
-    busdev = SYS_BUS_DEVICE(dev);
-    sysbus_mmio_map(busdev, 0, ADC_ADDR);
-    sysbus_connect_irq(busdev, 0,
-                       qdev_get_gpio_in(DEVICE(&s->adc_irqs), i));
 
     /* SPI devices */
     for (i = 0; i < STM_NUM_SPIS; i++) {
-- 
2.26.2