4 * iSeries Virtual I/O Message Path header
6 * Authors: Dave Boutcher <boutcher@us.ibm.com>
7 * Ryan Arnold <ryanarn@us.ibm.com>
8 * Colin Devilbiss <devilbis@us.ibm.com>
10 * (C) Copyright 2000 IBM Corporation
12 * This header file is used by the iSeries virtual I/O device
13 * drivers. It defines the interfaces to the common functions
14 * (implemented in drivers/char/viopath.h) as well as defining
15 * common functions and structures. Currently (at the time I
16 * wrote this comment) the iSeries virtual I/O device drivers
18 * drivers/block/viodasd.c
19 * drivers/char/viocons.c
20 * drivers/char/viotape.c
21 * drivers/cdrom/viocd.c
23 * The iSeries virtual ethernet support (veth.c) uses a whole
24 * different set of functions.
26 * This program is free software; you can redistribute it and/or
27 * modify it under the terms of the GNU General Public License as
28 * published by the Free Software Foundation; either version 2 of the
29 * License, or (at your option) anyu later version.
31 * This program is distributed in the hope that it will be useful, but
32 * WITHOUT ANY WARRANTY; without even the implied warranty of
33 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
34 * General Public License for more details.
36 * You should have received a copy of the GNU General Public License
37 * along with this program; if not, write to the Free Software Foundation,
38 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
44 #include <asm/iSeries/HvTypes.h>
45 #include <asm/iSeries/HvLpEvent.h>
47 /* iSeries virtual I/O events use the subtype field in
48 * HvLpEvent to figure out what kind of vio event is coming
49 * in. We use a table to route these, and this defines
50 * the maximum number of distinct subtypes
52 #define VIO_MAX_SUBTYPES 7
54 /* Each subtype can register a handler to process their events.
55 * The handler must have this interface.
57 typedef void (vio_event_handler_t) (struct HvLpEvent * event);
59 int viopath_open(HvLpIndex remoteLp, int subtype, int numReq);
60 int viopath_close(HvLpIndex remoteLp, int subtype, int numReq);
61 int vio_setHandler(int subtype, vio_event_handler_t * beh);
62 int vio_clearHandler(int subtype);
63 int viopath_isactive(HvLpIndex lp);
64 HvLpInstanceId viopath_sourceinst(HvLpIndex lp);
65 HvLpInstanceId viopath_targetinst(HvLpIndex lp);
66 void vio_set_hostlp(void);
67 void *vio_get_event_buffer(int subtype);
68 void vio_free_event_buffer(int subtype, void *buffer);
70 extern HvLpIndex viopath_hostLp;
71 extern HvLpIndex viopath_ourLp;
73 #define VIO_MESSAGE "iSeries virtual I/O: "
74 #define KERN_DEBUG_VIO KERN_DEBUG VIO_MESSAGE
75 #define KERN_INFO_VIO KERN_INFO VIO_MESSAGE
76 #define KERN_WARNING_VIO KERN_WARNING VIO_MESSAGE
78 #define VIOCHAR_MAX_DATA 200
80 #define VIOMAJOR_SUBTYPE_MASK 0xff00
81 #define VIOMINOR_SUBTYPE_MASK 0x00ff
82 #define VIOMAJOR_SUBTYPE_SHIFT 8
84 #define VIOVERSION 0x0101
87 This is the general structure for VIO errors; each module should have a table
88 of them, and each table should be terminated by an entry of { 0, 0, NULL }.
89 Then, to find a specific error message, a module should pass its local table
92 struct vio_error_entry {
97 const struct vio_error_entry *vio_lookup_rc(const struct vio_error_entry
98 *local_table, u16 rc);
101 viomajorsubtype_monitor = 0x0100,
102 viomajorsubtype_blockio = 0x0200,
103 viomajorsubtype_chario = 0x0300,
104 viomajorsubtype_config = 0x0400,
105 viomajorsubtype_cdio = 0x0500,
106 viomajorsubtype_tape = 0x0600
110 enum vioconfigsubtype {
111 vioconfigget = 0x0001,
116 viorc_noConnection = 0x0001,
117 viorc_noReceiver = 0x0002,
118 viorc_noBufferAvailable = 0x0003,
119 viorc_invalidMessageType = 0x0004,
120 viorc_invalidRange = 0x0201,
121 viorc_invalidToken = 0x0202,
122 viorc_DMAError = 0x0203,
123 viorc_useError = 0x0204,
124 viorc_releaseError = 0x0205,
125 viorc_invalidDisk = 0x0206,
126 viorc_openRejected = 0x0301