fnic_io.h
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/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* 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.
*/
#ifndef _FNIC_IO_H_
#define _FNIC_IO_H_
#include <scsi/fc/fc_fcp.h>
#define FNIC_DFLT_SG_DESC_CNT 32
#define FNIC_MAX_SG_DESC_CNT 256 /* Maximum descriptors per sgl */
#define FNIC_SG_DESC_ALIGN 16 /* Descriptor address alignment */
struct host_sg_desc {
__le64 addr;
__le32 len;
u32 _resvd;
};
struct fnic_dflt_sgl_list {
struct host_sg_desc sg_desc[FNIC_DFLT_SG_DESC_CNT];
};
struct fnic_sgl_list {
struct host_sg_desc sg_desc[FNIC_MAX_SG_DESC_CNT];
};
enum fnic_sgl_list_type {
FNIC_SGL_CACHE_DFLT = 0, /* cache with default size sgl */
FNIC_SGL_CACHE_MAX, /* cache with max size sgl */
FNIC_SGL_NUM_CACHES /* number of sgl caches */
};
enum fnic_ioreq_state {
FNIC_IOREQ_NOT_INITED = 0,
FNIC_IOREQ_CMD_PENDING,
FNIC_IOREQ_ABTS_PENDING,
FNIC_IOREQ_ABTS_COMPLETE,
FNIC_IOREQ_CMD_COMPLETE,
};
struct fnic_io_req {
struct host_sg_desc *sgl_list; /* sgl list */
void *sgl_list_alloc; /* sgl list address used for free */
dma_addr_t sense_buf_pa; /* dma address for sense buffer*/
dma_addr_t sgl_list_pa; /* dma address for sgl list */
u16 sgl_cnt;
u8 sgl_type; /* device DMA descriptor list type */
u8 io_completed:1; /* set to 1 when fw completes IO */
u32 port_id; /* remote port DID */
unsigned long start_time; /* in jiffies */
struct completion *abts_done; /* completion for abts */
struct completion *dr_done; /* completion for device reset */
};
#endif /* _FNIC_IO_H_ */