diff options
author | David Howells <dhowells@redhat.com> | 2006-12-06 15:01:18 +0000 |
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committer | David Howells <dhowells@warthog.cambridge.redhat.com> | 2006-12-06 15:01:18 +0000 |
commit | 4796b71fbb907ce6b8a9acf1852d3646a80b4576 (patch) | |
tree | 6263f165446c581efdbb760205c1f85378fe6259 /include/scsi/scsi_tgt_if.h | |
parent | 6d5aefb8eaa38e44b5b8cf60c812aceafc02d924 (diff) | |
parent | ec0bf39a471bf6fcd01def2bd677128cea940b73 (diff) |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
drivers/pcmcia/ds.c
Fix up merge failures with Linus's head and fix new compile failures.
Signed-Off-By: David Howells <dhowells@redhat.com>
Diffstat (limited to 'include/scsi/scsi_tgt_if.h')
-rw-r--r-- | include/scsi/scsi_tgt_if.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/include/scsi/scsi_tgt_if.h b/include/scsi/scsi_tgt_if.h new file mode 100644 index 000000000000..46d5e70d7215 --- /dev/null +++ b/include/scsi/scsi_tgt_if.h @@ -0,0 +1,90 @@ +/* + * SCSI target kernel/user interface + * + * Copyright (C) 2005 FUJITA Tomonori <tomof@acm.org> + * Copyright (C) 2005 Mike Christie <michaelc@cs.wisc.edu> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + */ +#ifndef __SCSI_TARGET_IF_H +#define __SCSI_TARGET_IF_H + +/* user -> kernel */ +#define TGT_UEVENT_CMD_RSP 0x0001 +#define TGT_UEVENT_TSK_MGMT_RSP 0x0002 + +/* kernel -> user */ +#define TGT_KEVENT_CMD_REQ 0x1001 +#define TGT_KEVENT_CMD_DONE 0x1002 +#define TGT_KEVENT_TSK_MGMT_REQ 0x1003 + +struct tgt_event_hdr { + uint16_t version; + uint16_t status; + uint16_t type; + uint16_t len; +} __attribute__ ((aligned (sizeof(uint64_t)))); + +struct tgt_event { + struct tgt_event_hdr hdr; + + union { + /* user-> kernel */ + struct { + int host_no; + uint32_t len; + int result; + aligned_u64 uaddr; + uint8_t rw; + aligned_u64 tag; + } cmd_rsp; + struct { + int host_no; + aligned_u64 mid; + int result; + } tsk_mgmt_rsp; + + + /* kernel -> user */ + struct { + int host_no; + uint32_t data_len; + uint8_t scb[16]; + uint8_t lun[8]; + int attribute; + aligned_u64 tag; + } cmd_req; + struct { + int host_no; + aligned_u64 tag; + int result; + } cmd_done; + struct { + int host_no; + int function; + aligned_u64 tag; + uint8_t lun[8]; + aligned_u64 mid; + } tsk_mgmt_req; + } p; +} __attribute__ ((aligned (sizeof(uint64_t)))); + +#define TGT_RING_SIZE (1UL << 16) +#define TGT_RING_PAGES (TGT_RING_SIZE >> PAGE_SHIFT) +#define TGT_EVENT_PER_PAGE (PAGE_SIZE / sizeof(struct tgt_event)) +#define TGT_MAX_EVENTS (TGT_EVENT_PER_PAGE * TGT_RING_PAGES) + +#endif |