8e9e5f4f5e
Convert srp_host->target_mutex from a semaphore to a mutex. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Roland Dreier <rolandd@cisco.com>
151 lines
3.8 KiB
C
151 lines
3.8 KiB
C
/*
|
|
* Copyright (c) 2005 Cisco Systems. All rights reserved.
|
|
*
|
|
* This software is available to you under a choice of one of two
|
|
* licenses. You may choose to be licensed under the terms of the GNU
|
|
* General Public License (GPL) Version 2, available from the file
|
|
* COPYING in the main directory of this source tree, or the
|
|
* OpenIB.org BSD license below:
|
|
*
|
|
* Redistribution and use in source and binary forms, with or
|
|
* without modification, are permitted provided that the following
|
|
* conditions are met:
|
|
*
|
|
* - Redistributions of source code must retain the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer.
|
|
*
|
|
* - 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.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*
|
|
* $Id: ib_srp.h 3932 2005-11-01 17:19:29Z roland $
|
|
*/
|
|
|
|
#ifndef IB_SRP_H
|
|
#define IB_SRP_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/list.h>
|
|
#include <linux/mutex.h>
|
|
|
|
#include <scsi/scsi_host.h>
|
|
#include <scsi/scsi_cmnd.h>
|
|
|
|
#include <rdma/ib_verbs.h>
|
|
#include <rdma/ib_sa.h>
|
|
#include <rdma/ib_cm.h>
|
|
|
|
enum {
|
|
SRP_PATH_REC_TIMEOUT_MS = 1000,
|
|
SRP_ABORT_TIMEOUT_MS = 5000,
|
|
|
|
SRP_PORT_REDIRECT = 1,
|
|
SRP_DLID_REDIRECT = 2,
|
|
|
|
SRP_MAX_LUN = 512,
|
|
SRP_MAX_IU_LEN = 256,
|
|
|
|
SRP_RQ_SHIFT = 6,
|
|
SRP_RQ_SIZE = 1 << SRP_RQ_SHIFT,
|
|
SRP_SQ_SIZE = SRP_RQ_SIZE - 1,
|
|
SRP_CQ_SIZE = SRP_SQ_SIZE + SRP_RQ_SIZE,
|
|
|
|
SRP_TAG_TSK_MGMT = 1 << (SRP_RQ_SHIFT + 1)
|
|
};
|
|
|
|
#define SRP_OP_RECV (1 << 31)
|
|
#define SRP_MAX_INDIRECT ((SRP_MAX_IU_LEN - \
|
|
sizeof (struct srp_cmd) - \
|
|
sizeof (struct srp_indirect_buf)) / 16)
|
|
|
|
enum srp_target_state {
|
|
SRP_TARGET_LIVE,
|
|
SRP_TARGET_CONNECTING,
|
|
SRP_TARGET_DEAD,
|
|
SRP_TARGET_REMOVED
|
|
};
|
|
|
|
struct srp_host {
|
|
u8 initiator_port_id[16];
|
|
struct ib_device *dev;
|
|
u8 port;
|
|
struct ib_pd *pd;
|
|
struct ib_mr *mr;
|
|
struct class_device class_dev;
|
|
struct list_head target_list;
|
|
struct mutex target_mutex;
|
|
struct completion released;
|
|
struct list_head list;
|
|
};
|
|
|
|
struct srp_request {
|
|
struct list_head list;
|
|
struct scsi_cmnd *scmnd;
|
|
struct srp_iu *cmd;
|
|
struct srp_iu *tsk_mgmt;
|
|
DECLARE_PCI_UNMAP_ADDR(direct_mapping)
|
|
struct completion done;
|
|
short next;
|
|
u8 cmd_done;
|
|
u8 tsk_status;
|
|
};
|
|
|
|
struct srp_target_port {
|
|
__be64 id_ext;
|
|
__be64 ioc_guid;
|
|
__be64 service_id;
|
|
struct srp_host *srp_host;
|
|
struct Scsi_Host *scsi_host;
|
|
char target_name[32];
|
|
unsigned int scsi_id;
|
|
|
|
struct ib_sa_path_rec path;
|
|
struct ib_sa_query *path_query;
|
|
int path_query_id;
|
|
|
|
struct ib_cm_id *cm_id;
|
|
struct ib_cq *cq;
|
|
struct ib_qp *qp;
|
|
|
|
int max_ti_iu_len;
|
|
s32 req_lim;
|
|
|
|
unsigned rx_head;
|
|
struct srp_iu *rx_ring[SRP_RQ_SIZE];
|
|
|
|
unsigned tx_head;
|
|
unsigned tx_tail;
|
|
struct srp_iu *tx_ring[SRP_SQ_SIZE + 1];
|
|
|
|
int req_head;
|
|
struct list_head req_queue;
|
|
struct srp_request req_ring[SRP_SQ_SIZE];
|
|
|
|
struct work_struct work;
|
|
|
|
struct list_head list;
|
|
struct completion done;
|
|
int status;
|
|
enum srp_target_state state;
|
|
};
|
|
|
|
struct srp_iu {
|
|
dma_addr_t dma;
|
|
void *buf;
|
|
size_t size;
|
|
enum dma_data_direction direction;
|
|
};
|
|
|
|
#endif /* IB_SRP_H */
|