litmus-rt.git - The LITMUS^RT kernel.

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Diffstat (limited to 'arch/m32r/include/asm/s1d13806.h')

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/* * iSER transport for the Open iSCSI Initiator & iSER transport internals * * Copyright (C) 2004 Dmitry Yusupov * Copyright (C) 2004 Alex Aizman * Copyright (C) 2005 Mike Christie * based on code maintained by open-iscsi@googlegroups.com * * Copyright (c) 2004, 2005, 2006 Voltaire, Inc. All rights reserved. * Copyright (c) 2005, 2006 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. */ #ifndef __ISCSI_ISER_H__ #define __ISCSI_ISER_H__ #include <linux/types.h> #include <linux/net.h> #include <scsi/libiscsi.h> #include <scsi/scsi_transport_iscsi.h> #include <linux/interrupt.h> #include <linux/wait.h> #include <linux/sched.h> #include <linux/list.h> #include <linux/slab.h> #include <linux/dma-mapping.h> #include <linux/mutex.h> #include <linux/mempool.h> #include <linux/uio.h> #include <linux/socket.h> #include <linux/in.h> #include <linux/in6.h> #include <rdma/ib_verbs.h> #include <rdma/ib_fmr_pool.h> #include <rdma/rdma_cm.h> #define DRV_NAME "iser" #define PFX DRV_NAME ": " #define DRV_VER "0.1" #define DRV_DATE "May 7th, 2006" #define iser_dbg(fmt, arg...) \ do { \ if (iser_debug_level > 1) \ printk(KERN_DEBUG PFX "%s:" fmt,\ __func__ , ## arg); \ } while (0) #define iser_warn(fmt, arg...) \ do { \ if (iser_debug_level > 0) \ printk(KERN_DEBUG PFX "%s:" fmt,\ __func__ , ## arg); \ } while (0) #define iser_err(fmt, arg...) \ do { \ printk(KERN_ERR PFX "%s:" fmt, \ __func__ , ## arg); \ } while (0) #define SHIFT_4K 12 #define SIZE_4K (1ULL << SHIFT_4K) #define MASK_4K (~(SIZE_4K-1)) /* support up to 512KB in one RDMA */ #define ISCSI_ISER_SG_TABLESIZE (0x80000 >> SHIFT_4K) #define ISER_DEF_CMD_PER_LUN ISCSI_DEF_XMIT_CMDS_MAX /* QP settings */ /* Maximal bounds on received asynchronous PDUs */ #define ISER_MAX_RX_MISC_PDUS 4 /* NOOP_IN(2) , ASYNC_EVENT(2) */ #define ISER_MAX_TX_MISC_PDUS 6 /* NOOP_OUT(2), TEXT(1), * * SCSI_TMFUNC(2), LOGOUT(1) */ #define ISER_QP_MAX_RECV_DTOS (ISCSI_DEF_XMIT_CMDS_MAX) #define ISER_MIN_POSTED_RX (ISCSI_DEF_XMIT_CMDS_MAX >> 2) /* the max TX (send) WR supported by the iSER QP is defined by * * max_send_wr = T * (1 + D) + C ; D is how many inflight dataouts we expect * * to have at max for SCSI command. The tx posting & completion handling code * * supports -EAGAIN scheme where tx is suspended till the QP has room for more * * send WR. D=8 comes from 64K/8K */ #define ISER_INFLIGHT_DATAOUTS 8 #define ISER_QP_MAX_REQ_DTOS (ISCSI_DEF_XMIT_CMDS_MAX * \ (1 + ISER_INFLIGHT_DATAOUTS) + \ ISER_MAX_TX_MISC_PDUS + \ ISER_MAX_RX_MISC_PDUS) #define ISER_VER 0x10 #define ISER_WSV 0x08 #define ISER_RSV 0x04 struct iser_hdr { u8 flags; u8 rsvd[3]; __be32 write_stag; /* write rkey */ __be64 write_va; __be32 read_stag; /* read rkey */ __be64 read_va; } __attribute__((packed)); /* Constant PDU lengths calculations */ #define ISER_HEADERS_LEN (sizeof(struct iser_hdr) + sizeof(struct iscsi_hdr)) #define ISER_RECV_DATA_SEG_LEN 128 #define ISER_RX_PAYLOAD_SIZE (ISER_HEADERS_LEN + ISER_RECV_DATA_SEG_LEN) #define ISER_RX_LOGIN_SIZE (ISER_HEADERS_LEN + ISCSI_DEF_MAX_RECV_SEG_LEN) /* Length of an object name string */ #define ISER_OBJECT_NAME_SIZE 64 enum iser_ib_conn_state { ISER_CONN_INIT, /* descriptor allocd, no conn */ ISER_CONN_PENDING, /* in the process of being established */ ISER_CONN_UP, /* up and running */ ISER_CONN_TERMINATING, /* in the process of being terminated */ ISER_CONN_DOWN, /* shut down */ ISER_CONN_STATES_NUM }; enum iser_task_status { ISER_TASK_STATUS_INIT = 0, ISER_TASK_STATUS_STARTED, ISER_TASK_STATUS_COMPLETED }; enum iser_data_dir { ISER_DIR_IN = 0, /* to initiator */ ISER_DIR_OUT, /* from initiator */ ISER_DIRS_NUM }; struct iser_data_buf { void *buf; /* pointer to the sg list */ unsigned int size; /* num entries of this sg */ unsigned long data_len; /* total data len */ unsigned int dma_nents; /* returned by dma_map_sg */ char *copy_buf; /* allocated copy buf for SGs unaligned * * for rdma which are copied */ struct scatterlist sg_single; /* SG-ified clone of a non SG SC or * * unaligned SG */ }; /* fwd declarations */ struct iser_device; struct iser_cq_desc; struct iscsi_iser_conn;


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