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[Qemu-devel] [RFC PATCH 3/7] devicetree: add helper for determining IRQ
From: |
Grant Likely |
Subject: |
[Qemu-devel] [RFC PATCH 3/7] devicetree: add helper for determining IRQ properties in the device tree |
Date: |
Tue, 06 Apr 2010 22:10:13 -0600 |
User-agent: |
StGIT/0.14.2 |
This patch adds the qbus_fdt_irq_to_number() helper to determine the
interrupt number and phandle needed for adding the interrupts property
to a device node in the device tree.
Signed-off-by: Grant Likely <address@hidden>
---
hw/qdev.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
hw/qdev.h | 1 +
2 files changed, 49 insertions(+), 0 deletions(-)
diff --git a/hw/qdev.c b/hw/qdev.c
index b177c3d..ed68a70 100644
--- a/hw/qdev.c
+++ b/hw/qdev.c
@@ -751,6 +751,54 @@ void do_device_del(Monitor *mon, const QDict *qdict)
#ifdef CONFIG_FDT
#include <libfdt.h>
+/* Iterate over entire device list looking for the interrupt parent */
+static int __qbus_fdt_irq_to_number(qemu_irq irq, BusState *bus,
+ uint32_t *phandle);
+static int __qbus_fdt_irq_to_number_dev(qemu_irq irq, DeviceState *dev,
+ uint32_t *phandle)
+{
+ BusState *child;
+ int rc, i;
+
+ for (i = 0; i < dev->num_gpio_in; i++) {
+ if (irq == qdev_get_gpio_in(dev, i)) {
+ if (phandle)
+ *phandle = (uint64_t)dev;
+ return i;
+ }
+ }
+
+ QLIST_FOREACH(child, &dev->child_bus, sibling) {
+ rc = __qbus_fdt_irq_to_number(irq, child, phandle);
+ if (rc >= 0)
+ return rc;
+ }
+
+ return -1;
+}
+
+static int __qbus_fdt_irq_to_number(qemu_irq irq, BusState *bus,
+ uint32_t *phandle)
+{
+ struct DeviceState *dev;
+ int rc;
+
+ QLIST_FOREACH(dev, &bus->children, sibling) {
+ rc = __qbus_fdt_irq_to_number_dev(irq, dev, phandle);
+ if (rc >= 0)
+ return rc;
+ }
+
+ return -1;
+}
+
+int qbus_fdt_irq_to_number(qemu_irq irq, uint32_t *phandle)
+{
+ return __qbus_fdt_irq_to_number(irq, main_system_bus, phandle);
+}
+
+
+
static int qbus_fdt_add_bus(void *fdt, BusState *bus, int dev_offset);
static int qdev_fdt_add_device(void *fdt, DeviceState *dev, int bus_offset)
{
diff --git a/hw/qdev.h b/hw/qdev.h
index d549d43..84544c7 100644
--- a/hw/qdev.h
+++ b/hw/qdev.h
@@ -277,6 +277,7 @@ void qdev_prop_set_compat(DeviceState *dev);
extern struct BusInfo system_bus_info;
#ifdef CONFIG_FDT
+int qbus_fdt_irq_to_number(qemu_irq irq, uint32_t *phandle);
int qdev_fdt_populate(void *fdt);
#endif
- [Qemu-devel] [RFC PATCH 0/7] QEMU patches to generate FDT from qdevs, Grant Likely, 2010/04/07
- [Qemu-devel] [RFC PATCH 1/7] devicetree: Add 8k instead of double dtb size when reserving extra memory, Grant Likely, 2010/04/07
- [Qemu-devel] [RFC PATCH 2/7] devicetree: auto-populate the device tree with qdev data, Grant Likely, 2010/04/07
- [Qemu-devel] [RFC PATCH 3/7] devicetree: add helper for determining IRQ properties in the device tree,
Grant Likely <=
- [Qemu-devel] [RFC PATCH 4/7] devicetree: Add sysbus fdt populate hooks., Grant Likely, 2010/04/07
- [Qemu-devel] [RFC PATCH 5/7] devicetree: Add helper to register devices with an fdt_populate hook, Grant Likely, 2010/04/07
- [Qemu-devel] [RFC PATCH 6/7] devicetree: Add fdt_populate hook to pl011 device, Grant Likely, 2010/04/07
- [Qemu-devel] [RFC PATCH 7/7] devicetree: Add fdt_populate hook to smc91x device, Grant Likely, 2010/04/07
- [Qemu-devel] Re: [RFC PATCH 0/7] QEMU patches to generate FDT from qdevs, Jeremy Kerr, 2010/04/07
- Re: [Qemu-devel] [RFC PATCH 0/7] QEMU patches to generate FDT from qdevs, Blue Swirl, 2010/04/07
- Re: [Qemu-devel] [RFC PATCH 0/7] QEMU patches to generate FDT from qdevs, Paul Brook, 2010/04/09