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authorthorpej <thorpej@NetBSD.org>2021-09-15 17:26:06 +0000
committerthorpej <thorpej@NetBSD.org>2021-09-15 17:26:06 +0000
commitb21f1bf046fb218b3f65826b4f540a548f9dd35e (patch)
tree53cb8a60836aa71d0973d7f21a57f501d8a21dda /sys/dev
parent8d8d5be12aec7de90a9f5ff0f53966b677cdecf8 (diff)
Device call interface definition files for the "device" and "pci"
subsystems.
Diffstat (limited to 'sys/dev')
-rw-r--r--sys/dev/pci/pci_calls62
1 files changed, 62 insertions, 0 deletions
diff --git a/sys/dev/pci/pci_calls b/sys/dev/pci/pci_calls
new file mode 100644
index 00000000000..f06e948e1f3
--- /dev/null
+++ b/sys/dev/pci/pci_calls
@@ -0,0 +1,62 @@
+$NetBSD: pci_calls,v 1.1 2021/09/15 17:26:07 thorpej Exp $
+
+/*-
+ * Copyright (c) 2021 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jason R. Thorpe.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+
+/*
+ * Device calls used by the PCI subsystem.
+ */
+
+subsystem pci;
+
+#include <dev/pci/pcivar.h>
+
+/*
+ * pci-bus-get-child-devhandle
+ *
+ * Retrieve the devhandle for the PCI device represented by 'tag'
+ * in the PCI segment represented by 'pc'. The PCI bus's device_t
+ * is the one that's passed in the call, and the device whose handle
+ * is being requested must be a direct child of that bus, otherwise
+ * behavior is undefined.
+ *
+ * Call returns 0 if successful, or an error code upon failure:
+ *
+ * ENOTSUP The device handle implementation for the
+ * PCI bus does not support this device call.
+ *
+ * ENODEV The PCI device represented by the pcitag_t
+ * was not found in a bus-scoped search of the
+ * platform device tree.
+ */
+pci-bus-get-child-devhandle {
+ pci_chipset_tag_t pc; /* IN */
+ pcitag_t tag; /* IN */
+ devhandle_t devhandle; /* OUT */
+};