hw/arm/xlnx-versal: 'Or' the interrupts from the BBRAM and RTC models

Add an orgate and 'or' the interrupts from the BBRAM and RTC models.

Signed-off-by: Francisco Iglesias <francisco.iglesias@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Luc Michel <luc@lmichel.fr>
Message-id: 20220121161141.14389-3-francisco.iglesias@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

3 files changed, 30 insertions, 5 deletions

diff --git a/hw/arm/xlnx-versal-virt.c b/hw/arm/xlnx-versal-virt.c
index 0c5edc8..8ea9979 100644
--- a/hw/arm/xlnx-versal-virt.c
+++ b/hw/arm/xlnx-versal-virt.c
@@ -365,7 +365,7 @@ static void fdt_add_bbram_node(VersalVirt *s)
     qemu_fdt_add_subnode(s->fdt, name);
 
     qemu_fdt_setprop_cells(s->fdt, name, "interrupts",
-                           GIC_FDT_IRQ_TYPE_SPI, VERSAL_BBRAM_APB_IRQ_0,
+                           GIC_FDT_IRQ_TYPE_SPI, VERSAL_PMC_APB_IRQ,
                            GIC_FDT_IRQ_FLAGS_LEVEL_HI);
     qemu_fdt_setprop(s->fdt, name, "interrupt-names",
                      interrupt_names, sizeof(interrupt_names));
diff --git a/hw/arm/xlnx-versal.c b/hw/arm/xlnx-versal.c
index b2705b6..fefd00b 100644
--- a/hw/arm/xlnx-versal.c
+++ b/hw/arm/xlnx-versal.c
@@ -25,6 +25,8 @@
 #define XLNX_VERSAL_ACPU_TYPE ARM_CPU_TYPE_NAME("cortex-a72")
 #define GEM_REVISION        0x40070106
 
+#define VERSAL_NUM_PMC_APB_IRQS 2
+
 static void versal_create_apu_cpus(Versal *s)
 {
     int i;
@@ -260,6 +262,25 @@ static void versal_create_sds(Versal *s, qemu_irq *pic)
     }
 }
 
+static void versal_create_pmc_apb_irq_orgate(Versal *s, qemu_irq *pic)
+{
+    DeviceState *orgate;
+
+    /*
+     * The VERSAL_PMC_APB_IRQ is an 'or' of the interrupts from the following
+     * models:
+     *  - RTC
+     *  - BBRAM
+     */
+    object_initialize_child(OBJECT(s), "pmc-apb-irq-orgate",
+                            &s->pmc.apb_irq_orgate, TYPE_OR_IRQ);
+    orgate = DEVICE(&s->pmc.apb_irq_orgate);
+    object_property_set_int(OBJECT(orgate),
+                            "num-lines", VERSAL_NUM_PMC_APB_IRQS, &error_fatal);
+    qdev_realize(orgate, NULL, &error_fatal);
+    qdev_connect_gpio_out(orgate, 0, pic[VERSAL_PMC_APB_IRQ]);
+}
+
 static void versal_create_rtc(Versal *s, qemu_irq *pic)
 {
     SysBusDevice *sbd;
@@ -277,7 +298,8 @@ static void versal_create_rtc(Versal *s, qemu_irq *pic)
      * TODO: Connect the ALARM and SECONDS interrupts once our RTC model
      * supports them.
      */
-    sysbus_connect_irq(sbd, 1, pic[VERSAL_RTC_APB_ERR_IRQ]);
+    sysbus_connect_irq(sbd, 1,
+                       qdev_get_gpio_in(DEVICE(&s->pmc.apb_irq_orgate), 0));
 }
 
 static void versal_create_xrams(Versal *s, qemu_irq *pic)
@@ -328,7 +350,8 @@ static void versal_create_bbram(Versal *s, qemu_irq *pic)
     sysbus_realize(sbd, &error_fatal);
     memory_region_add_subregion(&s->mr_ps, MM_PMC_BBRAM_CTRL,
                                 sysbus_mmio_get_region(sbd, 0));
-    sysbus_connect_irq(sbd, 0, pic[VERSAL_BBRAM_APB_IRQ_0]);
+    sysbus_connect_irq(sbd, 0,
+                       qdev_get_gpio_in(DEVICE(&s->pmc.apb_irq_orgate), 1));
 }
 
 static void versal_realize_efuse_part(Versal *s, Object *dev, hwaddr base)
@@ -455,6 +478,7 @@ static void versal_realize(DeviceState *dev, Error **errp)
     versal_create_gems(s, pic);
     versal_create_admas(s, pic);
     versal_create_sds(s, pic);
+    versal_create_pmc_apb_irq_orgate(s, pic);
     versal_create_rtc(s, pic);
     versal_create_xrams(s, pic);
     versal_create_bbram(s, pic);
diff --git a/include/hw/arm/xlnx-versal.h b/include/hw/arm/xlnx-versal.h
index 895ba12..62fb6f0 100644
--- a/include/hw/arm/xlnx-versal.h
+++ b/include/hw/arm/xlnx-versal.h
@@ -85,6 +85,8 @@ struct Versal {
         XlnxEFuse efuse;
         XlnxVersalEFuseCtrl efuse_ctrl;
         XlnxVersalEFuseCache efuse_cache;
+
+        qemu_or_irq apb_irq_orgate;
     } pmc;
 
     struct {
@@ -111,8 +113,7 @@ struct Versal {
 #define VERSAL_GEM1_WAKE_IRQ_0     59
 #define VERSAL_ADMA_IRQ_0          60
 #define VERSAL_XRAM_IRQ_0          79
-#define VERSAL_BBRAM_APB_IRQ_0     121
-#define VERSAL_RTC_APB_ERR_IRQ     121
+#define VERSAL_PMC_APB_IRQ         121
 #define VERSAL_SD0_IRQ_0           126
 #define VERSAL_EFUSE_IRQ           139
 #define VERSAL_RTC_ALARM_IRQ       142