[src/trunk]: src/sys/kern Device call interface definition files for the "dev...

[thorpej <thorpej%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/3a9741732d40
branches:  trunk
changeset: 1023571:3a9741732d40
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Wed Sep 15 17:26:06 2021 +0000

description:
Device call interface definition files for the "device" and "pci"
subsystems.

diffstat:

 sys/dev/pci/pci_calls |  62 +++++++++++++++++++++++++++++++++++++++++++++++++++
 sys/kern/device_calls |  50 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+), 0 deletions(-)

diffs (120 lines):

diff -r d02b5302dd5c -r 3a9741732d40 sys/dev/pci/pci_calls
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/dev/pci/pci_calls     Wed Sep 15 17:26:06 2021 +0000
@@ -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 */
+};
diff -r d02b5302dd5c -r 3a9741732d40 sys/kern/device_calls
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/kern/device_calls     Wed Sep 15 17:26:06 2021 +0000
@@ -0,0 +1,50 @@
+$NetBSD: device_calls,v 1.1 2021/09/15 17:26:06 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 device autoconfiguration subsystem
+ */
+
+subsystem device;
+
+/*
+ * device-enumerate-children
+ *
+ * Enumerates the direct children of a device, invoking the callback for
+ * each one.  The callback is passed the devhandle_t corresponding to the
+ * child device, as well as a user-supplied argument.  If the callback
+ * returns true, then enumeration continues.  If the callback returns false,
+ * enumeration is stopped.
+ */
+device-enumerate-children {
+       bool    (*callback)(device_t, devhandle_t, void *);
+       void *  callback_arg;
+};