c2_wr.h

linux内核源码

/*
 * Copyright (c) 2005 Ammasso, Inc. All rights reserved.
 * Copyright (c) 2005 Open Grid Computing, Inc. 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 _C2_WR_H_
#define _C2_WR_H_

#ifdef CCDEBUG
#define CCWR_MAGIC		0xb07700b0
#endif

#define C2_QP_NO_ATTR_CHANGE 0xFFFFFFFF

/* Maximum allowed size in bytes of private_data exchange
 * on connect.
 */
#define C2_MAX_PRIVATE_DATA_SIZE 200

/*
 * These types are shared among the adapter, host, and CCIL consumer.
 */
enum c2_cq_notification_type {
	C2_CQ_NOTIFICATION_TYPE_NONE = 1,
	C2_CQ_NOTIFICATION_TYPE_NEXT,
	C2_CQ_NOTIFICATION_TYPE_NEXT_SE
};

enum c2_setconfig_cmd {
	C2_CFG_ADD_ADDR = 1,
	C2_CFG_DEL_ADDR = 2,
	C2_CFG_ADD_ROUTE = 3,
	C2_CFG_DEL_ROUTE = 4
};

enum c2_getconfig_cmd {
	C2_GETCONFIG_ROUTES = 1,
	C2_GETCONFIG_ADDRS
};

/*
 *  CCIL Work Request Identifiers
 */
enum c2wr_ids {
	CCWR_RNIC_OPEN = 1,
	CCWR_RNIC_QUERY,
	CCWR_RNIC_SETCONFIG,
	CCWR_RNIC_GETCONFIG,
	CCWR_RNIC_CLOSE,
	CCWR_CQ_CREATE,
	CCWR_CQ_QUERY,
	CCWR_CQ_MODIFY,
	CCWR_CQ_DESTROY,
	CCWR_QP_CONNECT,
	CCWR_PD_ALLOC,
	CCWR_PD_DEALLOC,
	CCWR_SRQ_CREATE,
	CCWR_SRQ_QUERY,
	CCWR_SRQ_MODIFY,
	CCWR_SRQ_DESTROY,
	CCWR_QP_CREATE,
	CCWR_QP_QUERY,
	CCWR_QP_MODIFY,
	CCWR_QP_DESTROY,
	CCWR_NSMR_STAG_ALLOC,
	CCWR_NSMR_REGISTER,
	CCWR_NSMR_PBL,
	CCWR_STAG_DEALLOC,
	CCWR_NSMR_REREGISTER,
	CCWR_SMR_REGISTER,
	CCWR_MR_QUERY,
	CCWR_MW_ALLOC,
	CCWR_MW_QUERY,
	CCWR_EP_CREATE,
	CCWR_EP_GETOPT,
	CCWR_EP_SETOPT,
	CCWR_EP_DESTROY,
	CCWR_EP_BIND,
	CCWR_EP_CONNECT,
	CCWR_EP_LISTEN,
	CCWR_EP_SHUTDOWN,
	CCWR_EP_LISTEN_CREATE,
	CCWR_EP_LISTEN_DESTROY,
	CCWR_EP_QUERY,
	CCWR_CR_ACCEPT,
	CCWR_CR_REJECT,
	CCWR_CONSOLE,
	CCWR_TERM,
	CCWR_FLASH_INIT,
	CCWR_FLASH,
	CCWR_BUF_ALLOC,
	CCWR_BUF_FREE,
	CCWR_FLASH_WRITE,
	CCWR_INIT,		/* WARNING: Don't move this ever again! */



	/* Add new IDs here */



	/*
	 * WARNING: CCWR_LAST must always be the last verbs id defined!
	 *          All the preceding IDs are fixed, and must not change.
	 *          You can add new IDs, but must not remove or reorder
	 *          any IDs. If you do, YOU will ruin any hope of
	 *          compatability between versions.
	 */
	CCWR_LAST,

	/*
	 * Start over at 1 so that arrays indexed by user wr id's
	 * begin at 1.  This is OK since the verbs and user wr id's
	 * are always used on disjoint sets of queues.
	 */
	/*
	 * The order of the CCWR_SEND_XX verbs must
	 * match the order of the RDMA_OPs
	 */
	CCWR_SEND = 1,
	CCWR_SEND_INV,
	CCWR_SEND_SE,
	CCWR_SEND_SE_INV,
	CCWR_RDMA_WRITE,
	CCWR_RDMA_READ,
	CCWR_RDMA_READ_INV,
	CCWR_MW_BIND,
	CCWR_NSMR_FASTREG,
	CCWR_STAG_INVALIDATE,
	CCWR_RECV,
	CCWR_NOP,
	CCWR_UNIMPL,
/* WARNING: This must always be the last user wr id defined! */
};
#define RDMA_SEND_OPCODE_FROM_WR_ID(x)   (x+2)

/*
 * SQ/RQ Work Request Types
 */
enum c2_wr_type {
	C2_WR_TYPE_SEND = CCWR_SEND,
	C2_WR_TYPE_SEND_SE = CCWR_SEND_SE,
	C2_WR_TYPE_SEND_INV = CCWR_SEND_INV,
	C2_WR_TYPE_SEND_SE_INV = CCWR_SEND_SE_INV,
	C2_WR_TYPE_RDMA_WRITE = CCWR_RDMA_WRITE,
	C2_WR_TYPE_RDMA_READ = CCWR_RDMA_READ,
	C2_WR_TYPE_RDMA_READ_INV_STAG = CCWR_RDMA_READ_INV,
	C2_WR_TYPE_BIND_MW = CCWR_MW_BIND,
	C2_WR_TYPE_FASTREG_NSMR = CCWR_NSMR_FASTREG,
	C2_WR_TYPE_INV_STAG = CCWR_STAG_INVALIDATE,
	C2_WR_TYPE_RECV = CCWR_RECV,
	C2_WR_TYPE_NOP = CCWR_NOP,
};

struct c2_netaddr {
	u32 ip_addr;
	u32 netmask;
	u32 mtu;
};

struct c2_route {
	u32 ip_addr;		/* 0 indicates the default route */
	u32 netmask;		/* netmask associated with dst */
	u32 flags;
	union {
		u32 ipaddr;	/* address of the nexthop interface */
		u8 enaddr[6];
	} nexthop;
};

/*
 * A Scatter Gather Entry.
 */
struct c2_data_addr {
	u32 stag;
	u32 length;
	u64 to;
};

/*
 * MR and MW flags used by the consumer, RI, and RNIC.
 */
enum c2_mm_flags {
	MEM_REMOTE = 0x0001,	/* allow mw binds with remote access. */
	MEM_VA_BASED = 0x0002,	/* Not Zero-based */
	MEM_PBL_COMPLETE = 0x0004,	/* PBL array is complete in this msg */
	MEM_LOCAL_READ = 0x0008,	/* allow local reads */
	MEM_LOCAL_WRITE = 0x0010,	/* allow local writes */
	MEM_REMOTE_READ = 0x0020,	/* allow remote reads */
	MEM_REMOTE_WRITE = 0x0040,	/* allow remote writes */
	MEM_WINDOW_BIND = 0x0080,	/* binds allowed */
	MEM_SHARED = 0x0100,	/* set if MR is shared */
	MEM_STAG_VALID = 0x0200	/* set if STAG is in valid state */
};

/*
 * CCIL API ACF flags defined in terms of the low level mem flags.
 * This minimizes translation needed in the user API
 */
enum c2_acf {
	C2_ACF_LOCAL_READ = MEM_LOCAL_READ,
	C2_ACF_LOCAL_WRITE = MEM_LOCAL_WRITE,
	C2_ACF_REMOTE_READ = MEM_REMOTE_READ,
	C2_ACF_REMOTE_WRITE = MEM_REMOTE_WRITE,
	C2_ACF_WINDOW_BIND = MEM_WINDOW_BIND
};

/*
 * Image types of objects written to flash
 */
#define C2_FLASH_IMG_BITFILE 1
#define C2_FLASH_IMG_OPTION_ROM 2
#define C2_FLASH_IMG_VPD 3

/*
 *  to fix bug 1815 we define the max size allowable of the
 *  terminate message (per the IETF spec).Refer to the IETF
 *  protocal specification, section 12.1.6, page 64)
 *  The message is prefixed by 20 types of DDP info.
 *
 *  Then the message has 6 bytes for the terminate control
 *  and DDP segment length info plus a DDP header (either
 *  14 or 18 byts) plus 28 bytes for the RDMA header.
 *  Thus the max size in:
 *  20 + (6 + 18 + 28) = 72
 */
#define C2_MAX_TERMINATE_MESSAGE_SIZE (72)

/*
 * Build String Length.  It must be the same as C2_BUILD_STR_LEN in ccil_api.h
 */
#define WR_BUILD_STR_LEN 64

/*
 * WARNING:  All of these structs need to align any 64bit types on
 * 64 bit boundaries!  64bit types include u64 and u64.
 */

/*
 * Clustercore Work Request Header.  Be sensitive to field layout
 * and alignment.
 */
struct c2wr_hdr {
	/* wqe_count is part of the cqe.  It is put here so the
	 * adapter can write to it while the wr is pending without
	 * clobbering part of the wr.  This word need not be dma'd
	 * from the host to adapter by libccil, but we copy it anyway
	 * to make the memcpy to the adapter better aligned.
	 */
	u32 wqe_count;

	/* Put these fields next so that later 32- and 64-bit
	 * quantities are naturally aligned.
	 */
	u8 id;
	u8 result;		/* adapter -> host */
	u8 sge_count;		/* host -> adapter */
	u8 flags;		/* host -> adapter */

	u64 context;
#ifdef CCMSGMAGIC
	u32 magic;
	u32 pad;
#endif
} __attribute__((packed));

/*
 *------------------------ RNIC ------------------------
 */

/*
 * WR_RNIC_OPEN
 */

/*
 * Flags for the RNIC WRs
 */
enum c2_rnic_flags {
	RNIC_IRD_STATIC = 0x0001,
	RNIC_ORD_STATIC = 0x0002,
	RNIC_QP_STATIC = 0x0004,
	RNIC_SRQ_SUPPORTED = 0x0008,
	RNIC_PBL_BLOCK_MODE = 0x0010,
	RNIC_SRQ_MODEL_ARRIVAL = 0x0020,
	RNIC_CQ_OVF_DETECTED = 0x0040,
	RNIC_PRIV_MODE = 0x0080
};

struct c2wr_rnic_open_req {
	struct c2wr_hdr hdr;
	u64 user_context;
	u16 flags;		/* See enum c2_rnic_flags */
	u16 port_num;
} __attribute__((packed));

struct c2wr_rnic_open_rep {
	struct c2wr_hdr hdr;
	u32 rnic_handle;
} __attribute__((packed));

union c2wr_rnic_open {
	struct c2wr_rnic_open_req req;
	struct c2wr_rnic_open_rep rep;
} __attribute__((packed));

struct c2wr_rnic_query_req {
	struct c2wr_hdr hdr;
	u32 rnic_handle;
} __attribute__((packed));

/*
 * WR_RNIC_QUERY
 */
struct c2wr_rnic_query_rep {
	struct c2wr_hdr hdr;
	u64 user_context;
	u32 vendor_id;
	u32 part_number;
	u32 hw_version;
	u32 fw_ver_major;
	u32 fw_ver_minor;
	u32 fw_ver_patch;
	char fw_ver_build_str[WR_BUILD_STR_LEN];
	u32 max_qps;
	u32 max_qp_depth;
	u32 max_srq_depth;
	u32 max_send_sgl_depth;
	u32 max_rdma_sgl_depth;
	u32 max_cqs;
	u32 max_cq_depth;
	u32 max_cq_event_handlers;
	u32 max_mrs;
	u32 max_pbl_depth;
	u32 max_pds;
	u32 max_global_ird;
	u32 max_global_ord;
	u32 max_qp_ird;
	u32 max_qp_ord;
	u32 flags;
	u32 max_mws;
	u32 pbe_range_low;
	u32 pbe_range_high;
	u32 max_srqs;
	u32 page_size;
} __attribute__((packed));

union c2wr_rnic_query {
	struct c2wr_rnic_query_req req;
	struct c2wr_rnic_query_rep rep;
} __attribute__((packed));

/*
 * WR_RNIC_GETCONFIG
 */

struct c2wr_rnic_getconfig_req {
	struct c2wr_hdr hdr;
	u32 rnic_handle;
	u32 option;		/* see c2_getconfig_cmd_t */
	u64 reply_buf;
	u32 reply_buf_len;
} __attribute__((packed)) ;

struct c2wr_rnic_getconfig_rep {
	struct c2wr_hdr hdr;
	u32 option;		/* see c2_getconfig_cmd_t */
	u32 count_len;		/* length of the number of addresses configured */
} __attribute__((packed)) ;

union c2wr_rnic_getconfig {
	struct c2wr_rnic_getconfig_req req;
	struct c2wr_rnic_getconfig_rep rep;
} __attribute__((packed)) ;

/*
 * WR_RNIC_SETCONFIG
 */
struct c2wr_rnic_setconfig_req {
	struct c2wr_hdr hdr;
	u32 rnic_handle;
	u32 option;		/* See c2_setconfig_cmd_t */
	/* variable data and pad. See c2_netaddr and c2_route */
	u8 data[0];
} __attribute__((packed)) ;

struct c2wr_rnic_setconfig_rep {
	struct c2wr_hdr hdr;
} __attribute__((packed)) ;

union c2wr_rnic_setconfig {
	struct c2wr_rnic_setconfig_req req;
	struct c2wr_rnic_setconfig_rep rep;
} __attribute__((packed)) ;

/*
 * WR_RNIC_CLOSE
 */
struct c2wr_rnic_close_req {
	struct c2wr_hdr hdr;
	u32 rnic_handle;
} __attribute__((packed)) ;

struct c2wr_rnic_close_rep {
	struct c2wr_hdr hdr;
} __attribute__((packed)) ;

union c2wr_rnic_close {
	struct c2wr_rnic_close_req req;
	struct c2wr_rnic_close_rep rep;
} __attribute__((packed)) ;

/*
 *------------------------ CQ ------------------------
 */
struct c2wr_cq_create_req {
	struct c2wr_hdr hdr;
	u64 shared_ht;
	u64 user_context;
	u64 msg_pool;
	u32 rnic_handle;
	u32 msg_size;
	u32 depth;
} __attribute__((packed)) ;

struct c2wr_cq_create_rep {
	struct c2wr_hdr hdr;
	u32 mq_index;
	u32 adapter_shared;
	u32 cq_handle;
} __attribute__((packed)) ;

union c2wr_cq_create {
	struct c2wr_cq_create_req req;
	struct c2wr_cq_create_rep rep;
} __attribute__((packed)) ;

struct c2wr_cq_modify_req {
	struct c2wr_hdr hdr;
	u32 rnic_handle;
	u32 cq_handle;
	u32 new_depth;
	u64 new_msg_pool;
} __attribute__((packed)) ;

struct c2wr_cq_modify_rep {
	struct c2wr_hdr hdr;
} __attribute__((packed)) ;

union c2wr_cq_modify {
	struct c2wr_cq_modify_req req;
	struct c2wr_cq_modify_rep rep;
} __attribute__((packed)) ;

struct c2wr_cq_destroy_req {
	struct c2wr_hdr hdr;
	u32 rnic_handle;
	u32 cq_handle;
} __attribute__((packed)) ;

struct c2wr_cq_destroy_rep {
	struct c2wr_hdr hdr;
} __attribute__((packed)) ;

union c2wr_cq_destroy {
	struct c2wr_cq_destroy_req req;
	struct c2wr_cq_destroy_rep rep;
} __attribute__((packed)) ;

/*
 *------------------------ PD ------------------------
 */
struct c2wr_pd_alloc_req {
	struct c2wr_hdr hdr;
	u32 rnic_handle;
	u32 pd_id;
} __attribute__((packed)) ;

struct c2wr_pd_alloc_rep {
	struct c2wr_hdr hdr;
} __attribute__((packed)) ;