[Qemu-devel] [PATCH] integrator/cp: Wire up MMC card detection

[Jan Kiszka <jan.kiszka@siemens.com>]

This allows to use MMC emulation with the Integrator/CP model. Well,
mostly. There seems to be timing issues with Linux so that the card is
not always detected (but most of the time).

Note that the read-only pin is intentionally left unconnected because
the PIC model could deliver it incorrectly as interrupt to the guest
while the spec says that this pin is just for status reading.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
 hw/arm/integratorcp.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/hw/arm/integratorcp.c b/hw/arm/integratorcp.c
index 8c48b68..0efadc4 100644
--- a/hw/arm/integratorcp.c
+++ b/hw/arm/integratorcp.c
@@ -477,7 +477,7 @@ static void integratorcp_init(MachineState *machine)
     MemoryRegion *ram = g_new(MemoryRegion, 1);
     MemoryRegion *ram_alias = g_new(MemoryRegion, 1);
     qemu_irq pic[32];
-    DeviceState *dev;
+    DeviceState *dev, *sic;
     int i;
     Error *err = NULL;
 
@@ -535,7 +535,7 @@ static void integratorcp_init(MachineState *machine)
     for (i = 0; i < 32; i++) {
         pic[i] = qdev_get_gpio_in(dev, i);
     }
-    sysbus_create_simple(TYPE_INTEGRATOR_PIC, 0xca000000, pic[26]);
+    sic = sysbus_create_simple(TYPE_INTEGRATOR_PIC, 0xca000000, pic[26]);
     sysbus_create_varargs("integrator_pit", 0x13000000,
                           pic[5], pic[6], pic[7], NULL);
     sysbus_create_simple("pl031", 0x15000000, pic[8]);
@@ -545,7 +545,10 @@ static void integratorcp_init(MachineState *machine)
     sysbus_create_simple("pl050_keyboard", 0x18000000, pic[3]);
     sysbus_create_simple("pl050_mouse", 0x19000000, pic[4]);
     sysbus_create_simple(TYPE_INTEGRATOR_DEBUG, 0x1a000000, 0);
-    sysbus_create_varargs("pl181", 0x1c000000, pic[23], pic[24], NULL);
+    dev = sysbus_create_varargs("pl181", 0x1c000000, pic[23], pic[24], NULL);
+    /* Wire up MMC card detect */
+    qdev_connect_gpio_out(dev, 1, qdev_get_gpio_in(sic, 3));
+
     if (nd_table[0].used)
         smc91c111_init(&nd_table[0], 0xc8000000, pic[27]);
 
-- 
2.1.4