[mirror_ubuntu-bionic-kernel.git] / drivers / scsi / fnic / fnic_io.h

/*
 * 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        1024    /* 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_CMD_PENDING = 0,
	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 */
	struct completion *abts_done; /* completion for abts */
	struct completion *dr_done; /* completion for device reset */
};

#endif /* _FNIC_IO_H_ */
Commit	Line	Data
5df6d737 AJ	1	/*
	2	* Copyright 2008 Cisco Systems, Inc. All rights reserved.
	3	* Copyright 2007 Nuova Systems, Inc. All rights reserved.
	4	*
	5	* This program is free software; you may redistribute it and/or modify
	6	* it under the terms of the GNU General Public License as published by
	7	* the Free Software Foundation; version 2 of the License.
	8	*
	9	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	10	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	11	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	12	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	13	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	14	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	15	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	16	* SOFTWARE.
	17	*/
	18	#ifndef _FNIC_IO_H_
	19	#define _FNIC_IO_H_
	20
	21	#include <scsi/fc/fc_fcp.h>
	22
	23	#define FNIC_DFLT_SG_DESC_CNT 32
	24	#define FNIC_MAX_SG_DESC_CNT 1024 /* Maximum descriptors per sgl */
	25	#define FNIC_SG_DESC_ALIGN 16 /* Descriptor address alignment */
	26
	27	struct host_sg_desc {
	28	__le64 addr;
	29	__le32 len;
	30	u32 _resvd;
	31	};
	32
	33	struct fnic_dflt_sgl_list {
	34	struct host_sg_desc sg_desc[FNIC_DFLT_SG_DESC_CNT];
	35	};
	36
	37	struct fnic_sgl_list {
	38	struct host_sg_desc sg_desc[FNIC_MAX_SG_DESC_CNT];
	39	};
	40
	41	enum fnic_sgl_list_type {
	42	FNIC_SGL_CACHE_DFLT = 0, /* cache with default size sgl */
	43	FNIC_SGL_CACHE_MAX, /* cache with max size sgl */
	44	FNIC_SGL_NUM_CACHES /* number of sgl caches */
	45	};
	46
	47	enum fnic_ioreq_state {
	48	FNIC_IOREQ_CMD_PENDING = 0,
	49	FNIC_IOREQ_ABTS_PENDING,
	50	FNIC_IOREQ_ABTS_COMPLETE,
	51	FNIC_IOREQ_CMD_COMPLETE,
	52	};
	53
	54	struct fnic_io_req {
	55	struct host_sg_desc sgl_list; / sgl list */
	56	void sgl_list_alloc; / sgl list address used for free */
	57	dma_addr_t sense_buf_pa; /* dma address for sense buffer*/
	58	dma_addr_t sgl_list_pa; /* dma address for sgl list */
	59	u16 sgl_cnt;
	60	u8 sgl_type; /* device DMA descriptor list type */
	61	u8 io_completed:1; /* set to 1 when fw completes IO */
	62	u32 port_id; /* remote port DID */
	63	struct completion abts_done; / completion for abts */
	64	struct completion dr_done; / completion for device reset */
65	};
66
67	#endif /* _FNIC_IO_H_ */