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authorIngo Molnar <mingo@elte.hu>2008-07-18 13:31:12 -0400
committerIngo Molnar <mingo@elte.hu>2008-07-18 13:31:12 -0400
commit3e370b29d35fb01bfb92c2814d6f79bf6a2cb970 (patch)
tree3b8fb467d60bfe6a34686f4abdc3a60050ba40a4 /include/scsi/scsi_dh.h
parent88d1dce3a74367291f65a757fbdcaf17f042f30c (diff)
parent5b664cb235e97afbf34db9c4d77f08ebd725335e (diff)
Merge branch 'linus' into x86/pci-ioapic-boot-irq-quirks
Conflicts: drivers/pci/quirks.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/scsi/scsi_dh.h')
-rw-r--r--include/scsi/scsi_dh.h69
1 files changed, 69 insertions, 0 deletions
diff --git a/include/scsi/scsi_dh.h b/include/scsi/scsi_dh.h
new file mode 100644
index 000000000000..3ad2303d1a16
--- /dev/null
+++ b/include/scsi/scsi_dh.h
@@ -0,0 +1,69 @@
1/*
2 * Header file for SCSI device handler infrastruture.
3 *
4 * Modified version of patches posted by Mike Christie <michaelc@cs.wisc.edu>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 *
20 * Copyright IBM Corporation, 2007
21 * Authors:
22 * Chandra Seetharaman <sekharan@us.ibm.com>
23 * Mike Anderson <andmike@linux.vnet.ibm.com>
24 */
25
26#include <scsi/scsi_device.h>
27
28enum {
29 SCSI_DH_OK = 0,
30 /*
31 * device errors
32 */
33 SCSI_DH_DEV_FAILED, /* generic device error */
34 SCSI_DH_DEV_TEMP_BUSY,
35 SCSI_DH_DEVICE_MAX, /* max device blkerr definition */
36
37 /*
38 * transport errors
39 */
40 SCSI_DH_NOTCONN = SCSI_DH_DEVICE_MAX + 1,
41 SCSI_DH_CONN_FAILURE,
42 SCSI_DH_TRANSPORT_MAX, /* max transport blkerr definition */
43
44 /*
45 * driver and generic errors
46 */
47 SCSI_DH_IO = SCSI_DH_TRANSPORT_MAX + 1, /* generic error */
48 SCSI_DH_INVALID_IO,
49 SCSI_DH_RETRY, /* retry the req, but not immediately */
50 SCSI_DH_IMM_RETRY, /* immediately retry the req */
51 SCSI_DH_TIMED_OUT,
52 SCSI_DH_RES_TEMP_UNAVAIL,
53 SCSI_DH_DEV_OFFLINED,
54 SCSI_DH_NOSYS,
55 SCSI_DH_DRIVER_MAX,
56};
57#if defined(CONFIG_SCSI_DH) || defined(CONFIG_SCSI_DH_MODULE)
58extern int scsi_dh_activate(struct request_queue *);
59extern int scsi_dh_handler_exist(const char *);
60#else
61static inline int scsi_dh_activate(struct request_queue *req)
62{
63 return 0;
64}
65static inline int scsi_dh_handler_exist(const char *name)
66{
67 return 0;
68}
69#endif