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-rw-r--r--sys/compat/linuxkpi/common/include/linux/interrupt.h158
1 files changed, 158 insertions, 0 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/interrupt.h b/sys/compat/linuxkpi/common/include/linux/interrupt.h
new file mode 100644
index 000000000000..4c0ad8087582
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/linux/interrupt.h
@@ -0,0 +1,158 @@
+/*-
+ * Copyright (c) 2010 Isilon Systems, Inc.
+ * Copyright (c) 2010 iX Systems, Inc.
+ * Copyright (c) 2010 Panasas, Inc.
+ * Copyright (c) 2013-2015 Mellanox Technologies, Ltd.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice unmodified, this list of conditions, and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+#ifndef _LINUX_INTERRUPT_H_
+#define _LINUX_INTERRUPT_H_
+
+#include <linux/device.h>
+#include <linux/pci.h>
+
+#include <sys/bus.h>
+#include <sys/rman.h>
+
+typedef irqreturn_t (*irq_handler_t)(int, void *);
+
+#define IRQ_RETVAL(x) ((x) != IRQ_NONE)
+
+#define IRQF_SHARED RF_SHAREABLE
+
+struct irq_ent {
+ struct list_head links;
+ struct device *dev;
+ struct resource *res;
+ void *arg;
+ irqreturn_t (*handler)(int, void *);
+ void *tag;
+ int irq;
+};
+
+static inline int
+_irq_rid(struct device *dev, int irq)
+{
+ if (irq == dev->irq)
+ return (0);
+ return irq - dev->msix + 1;
+}
+
+static void
+_irq_handler(void *ent)
+{
+ struct irq_ent *irqe;
+
+ irqe = ent;
+ irqe->handler(irqe->irq, irqe->arg);
+}
+
+static inline struct irq_ent *
+_irq_ent(struct device *dev, int irq)
+{
+ struct irq_ent *irqe;
+
+ list_for_each_entry(irqe, &dev->irqents, links)
+ if (irqe->irq == irq)
+ return (irqe);
+
+ return (NULL);
+}
+
+static inline int
+request_irq(unsigned int irq, irq_handler_t handler, unsigned long flags,
+ const char *name, void *arg)
+{
+ struct resource *res;
+ struct irq_ent *irqe;
+ struct device *dev;
+ int error;
+ int rid;
+
+ dev = _pci_find_irq_dev(irq);
+ if (dev == NULL)
+ return -ENXIO;
+ rid = _irq_rid(dev, irq);
+ res = bus_alloc_resource_any(dev->bsddev, SYS_RES_IRQ, &rid,
+ flags | RF_ACTIVE);
+ if (res == NULL)
+ return (-ENXIO);
+ irqe = kmalloc(sizeof(*irqe), GFP_KERNEL);
+ irqe->dev = dev;
+ irqe->res = res;
+ irqe->arg = arg;
+ irqe->handler = handler;
+ irqe->irq = irq;
+ error = bus_setup_intr(dev->bsddev, res, INTR_TYPE_NET | INTR_MPSAFE,
+ NULL, _irq_handler, irqe, &irqe->tag);
+ if (error) {
+ bus_release_resource(dev->bsddev, SYS_RES_IRQ, rid, irqe->res);
+ kfree(irqe);
+ return (-error);
+ }
+ list_add(&irqe->links, &dev->irqents);
+
+ return 0;
+}
+
+static inline int
+bind_irq_to_cpu(unsigned int irq, int cpu_id)
+{
+ struct irq_ent *irqe;
+ struct device *dev;
+
+ dev = _pci_find_irq_dev(irq);
+ if (dev == NULL)
+ return (-ENOENT);
+
+ irqe = _irq_ent(dev, irq);
+ if (irqe == NULL)
+ return (-ENOENT);
+
+ return (-bus_bind_intr(dev->bsddev, irqe->res, cpu_id));
+}
+
+static inline void
+free_irq(unsigned int irq, void *device)
+{
+ struct irq_ent *irqe;
+ struct device *dev;
+ int rid;
+
+ dev = _pci_find_irq_dev(irq);
+ if (dev == NULL)
+ return;
+ rid = _irq_rid(dev, irq);
+ irqe = _irq_ent(dev, irq);
+ if (irqe == NULL)
+ return;
+ bus_teardown_intr(dev->bsddev, irqe->res, irqe->tag);
+ bus_release_resource(dev->bsddev, SYS_RES_IRQ, rid, irqe->res);
+ list_del(&irqe->links);
+ kfree(irqe);
+}
+
+#endif /* _LINUX_INTERRUPT_H_ */