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[Minios-devel] [UNIKRAFT PATCH 16/17] plat/xen: Add IRQ subsystem initialization function


  • To: minios-devel@xxxxxxxxxxxxx
  • From: Costin Lupu <costin.lupu@xxxxxxxxx>
  • Date: Tue, 27 Mar 2018 15:29:49 +0300
  • Cc: simon.kuenzer@xxxxxxxxx
  • Delivery-date: Tue, 27 Mar 2018 12:30:16 +0000
  • Ironport-phdr: 9a23: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
  • List-id: Mini-os development list <minios-devel.lists.xenproject.org>

Introducing ukplat_irq_init function for IRQ subsystem initialization.
The IRQ subsystem might require memory allocations for shared IRQ
handling in which case the allocator must be specified on init.

Signed-off-by: Costin Lupu <costin.lupu@xxxxxxxxx>
---
 include/uk/plat/irq.h | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++
 plat/xen/events.c     |  8 ++++++++
 2 files changed, 62 insertions(+)
 create mode 100644 include/uk/plat/irq.h

diff --git a/include/uk/plat/irq.h b/include/uk/plat/irq.h
new file mode 100644
index 0000000..b4e6375
--- /dev/null
+++ b/include/uk/plat/irq.h
@@ -0,0 +1,54 @@
+/* SPDX-License-Identifier: BSD-3-Clause */
+/*
+ * Authors: Costin Lupu <costin.lupu@xxxxxxxxx>
+ *
+ * Copyright (c) 2018, NEC Europe Ltd., NEC Corporation. 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, 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.
+ * 3. Neither the name of the copyright holder nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
+ *
+ * THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY.
+ */
+#ifndef __UKPLAT_IRQ_H__
+#define __UKPLAT_IRQ_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct uk_alloc;
+
+/**
+ * Initializes platform IRQ subsystem
+ * @param a The allocator to be used for internal memory allocations
+ * @return initialization status
+ */
+int ukplat_irq_init(struct uk_alloc *a);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __UKPLAT_IRQ_H__ */
diff --git a/plat/xen/events.c b/plat/xen/events.c
index 9396747..1709b90 100644
--- a/plat/xen/events.c
+++ b/plat/xen/events.c
@@ -327,3 +327,11 @@ inline void clear_evtchn(uint32_t port)
 
        ukarch_clr_bit_sync(port, &s->evtchn_pending[0]);
 }
+
+struct uk_alloc;
+
+int ukplat_irq_init(struct uk_alloc *a __unused)
+{
+       /* Nothing for now */
+       return 0;
+}
-- 
2.1.4


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