lib: create thread for interrrupt polling

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 80 insertions, 0 deletions

diff --git a/lib/intr.c b/lib/intr.c
new file mode 100644
index 000000000..5563c372b
--- /dev/null
+++ b/lib/intr.c
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2013 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs
+ */
+
+#include <core/device.h>
+#include <core/client.h>
+#include "priv.h"
+
+pthread_t os_intr_thread;
+struct os_intr {
+	struct list_head head;
+	irq_handler_t handler;
+	int irq;
+	void *dev;
+};
+static LIST_HEAD(os_intr_list);
+
+int
+os_intr_init(unsigned int irq, irq_handler_t handler, unsigned long flags,
+	     const char *name, void *dev)
+{
+	struct os_intr *intr = malloc(sizeof(*intr));
+	if (!intr)
+		return -ENOMEM;
+	intr->handler = handler;
+	intr->irq = irq;
+	intr->dev = dev;
+	list_add(&intr->head, &os_intr_list);
+	return 0;
+}
+
+void
+os_intr_free(unsigned int irq, void *dev)
+{
+	struct os_intr *intr;
+
+	list_for_each_entry(intr, &os_intr_list, head) {
+		if (intr->irq == irq && intr->dev == dev) {
+			list_del(&intr->head);
+			free(intr);
+			break;
+		}
+	}
+}
+
+void *
+os_intr(void *arg)
+{
+	struct os_intr *intr;
+
+	while (1) {
+		list_for_each_entry(intr, &os_intr_list, head) {
+			intr->handler(intr->irq, intr->dev);
+		}
+
+		usleep(10000);
+	}
+
+	return NULL;
+}