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[PATCH v3 18/20] nubus: add support for slot IRQs
From: |
Mark Cave-Ayland |
Subject: |
[PATCH v3 18/20] nubus: add support for slot IRQs |
Date: |
Thu, 16 Sep 2021 11:05:52 +0100 |
Each Nubus slot has an IRQ line that can be used to request service from the
CPU. Connect the IRQs to the Nubus bridge so that they can be wired up using
qdev
gpios accordingly, and introduce a new nubus_set_irq() function that can be used
by Nubus devices to control the slot IRQ.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
---
hw/nubus/nubus-bridge.c | 2 ++
hw/nubus/nubus-device.c | 8 ++++++++
include/hw/nubus/nubus.h | 6 ++++++
3 files changed, 16 insertions(+)
diff --git a/hw/nubus/nubus-bridge.c b/hw/nubus/nubus-bridge.c
index 2c7c4ee121..0366d925a9 100644
--- a/hw/nubus/nubus-bridge.c
+++ b/hw/nubus/nubus-bridge.c
@@ -19,6 +19,8 @@ static void nubus_bridge_init(Object *obj)
NubusBus *bus = &s->bus;
qbus_create_inplace(bus, sizeof(s->bus), TYPE_NUBUS_BUS, DEVICE(s), NULL);
+
+ qdev_init_gpio_out(DEVICE(s), bus->irqs, NUBUS_IRQS);
}
static Property nubus_bridge_properties[] = {
diff --git a/hw/nubus/nubus-device.c b/hw/nubus/nubus-device.c
index bb574f970a..a5cbd88153 100644
--- a/hw/nubus/nubus-device.c
+++ b/hw/nubus/nubus-device.c
@@ -10,12 +10,20 @@
#include "qemu/osdep.h"
#include "qemu/datadir.h"
+#include "hw/irq.h"
#include "hw/loader.h"
#include "hw/nubus/nubus.h"
#include "qapi/error.h"
#include "qemu/error-report.h"
+void nubus_set_irq(NubusDevice *nd, int level)
+{
+ NubusBus *nubus = NUBUS_BUS(qdev_get_parent_bus(DEVICE(nd)));
+
+ qemu_set_irq(nubus->irqs[nd->slot], level);
+}
+
static void nubus_device_realize(DeviceState *dev, Error **errp)
{
NubusBus *nubus = NUBUS_BUS(qdev_get_parent_bus(dev));
diff --git a/include/hw/nubus/nubus.h b/include/hw/nubus/nubus.h
index cf9a585a91..1c487f74ac 100644
--- a/include/hw/nubus/nubus.h
+++ b/include/hw/nubus/nubus.h
@@ -25,6 +25,8 @@
#define NUBUS_FIRST_SLOT 0x0
#define NUBUS_LAST_SLOT 0xf
+#define NUBUS_IRQS 16
+
#define TYPE_NUBUS_DEVICE "nubus-device"
OBJECT_DECLARE_SIMPLE_TYPE(NubusDevice, NUBUS_DEVICE)
@@ -44,6 +46,8 @@ struct NubusBus {
MemoryRegion slot_io;
uint32_t slot_available_mask;
+
+ qemu_irq irqs[NUBUS_IRQS];
};
#define NUBUS_DECL_ROM_MAX_SIZE (128 * KiB)
@@ -59,6 +63,8 @@ struct NubusDevice {
MemoryRegion decl_rom;
};
+void nubus_set_irq(NubusDevice *nd, int level);
+
struct NubusBridge {
SysBusDevice parent_obj;
--
2.20.1
- Re: [PATCH v3 11/20] nubus-device: add romfile property for loading declaration ROMs, (continued)
- [PATCH v3 13/20] nubus-bridge: introduce separate NubusBridge structure, Mark Cave-Ayland, 2021/09/16
- [PATCH v3 14/20] mac-nubus-bridge: rename MacNubusState to MacNubusBridge, Mark Cave-Ayland, 2021/09/16
- [PATCH v3 15/20] nubus: move NubusBus from mac-nubus-bridge to nubus-bridge, Mark Cave-Ayland, 2021/09/16
- [PATCH v3 16/20] nubus-bridge: embed the NubusBus object directly within nubus-bridge, Mark Cave-Ayland, 2021/09/16
- [PATCH v3 17/20] nubus-bridge: make slot_available_mask a qdev property, Mark Cave-Ayland, 2021/09/16
- [PATCH v3 18/20] nubus: add support for slot IRQs,
Mark Cave-Ayland <=
- [PATCH v3 19/20] q800: wire up nubus IRQs, Mark Cave-Ayland, 2021/09/16
- [PATCH v3 20/20] q800: configure nubus available slots for Quadra 800, Mark Cave-Ayland, 2021/09/16