path: root/drivers/infiniband/hw/cxgb4/iw_cxgb4.h

/*
 * Copyright (c) 2009-2010 Chelsio, 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 __IW_CXGB4_H__
#define __IW_CXGB4_H__

#include <linux/mutex.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/idr.h>
#include <linux/completion.h>
#include <linux/netdevice.h>
#include <linux/sched.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/inet.h>
#include <linux/wait.h>
#include <linux/kref.h>
#include <linux/timer.h>
#include <linux/io.h>

#include <asm/byteorder.h>

#include <net/net_namespace.h>

#include <rdma/ib_verbs.h>
#include <rdma/iw_cm.h>
#include <rdma/rdma_netlink.h>
#include <rdma/iw_portmap.h>

#include "cxgb4.h"
#include "cxgb4_uld.h"
#include "l2t.h"
#include "user.h"

#define DRV_NAME "iw_cxgb4"
#define MOD DRV_NAME ":"

extern int c4iw_debug;
#define PDBG(fmt, args...) \
do { \
	if (c4iw_debug) \
		printk(MOD fmt, ## args); \
} while (0)

#include "t4.h"

#define PBL_OFF(rdev_p, a) ((a) - (rdev_p)->lldi.vr->pbl.start)
#define RQT_OFF(rdev_p, a) ((a) - (rdev_p)->lldi.vr->rq.start)

static inline void *cplhdr(struct sk_buff *skb)
{
	return skb->data;
}

#define C4IW_ID_TABLE_F_RANDOM 1       /* Pseudo-randomize the id's returned */
#define C4IW_ID_TABLE_F_EMPTY  2       /* Table is initially empty */

struct c4iw_id_table {
	u32 flags;
	u32 start;              /* logical minimal id */
	u32 last;               /* hint for find */
	u32 max;
	spinlock_t lock;
	unsigned long *table;
};

struct c4iw_resource {
	struct c4iw_id_table tpt_table;
	struct c4iw_id_table qid_table;
	struct c4iw_id_table pdid_table;
};

struct c4iw_qid_list {
	struct list_head entry;
	u32 qid;
};

struct c4iw_dev_ucontext {
	struct list_head qpids;
	struct list_head cqids;
	struct mutex lock;
};

enum c4iw_rdev_flags {
	T4_FATAL_ERROR = (1<<0),
	T4_STATUS_PAGE_DISABLED = (1<<1),
};

struct c4iw_stat {
	u64 total;
	u64 cur;
	u64 max;
	u64 fail;
};

struct c4iw_stats {
	struct mutex lock;
	struct c4iw_stat qid;
	struct c4iw_stat pd;
	struct c4iw_stat stag;
	struct c4iw_stat pbl;
	struct c4iw_stat rqt;
	struct c4iw_stat ocqp;
	u64  db_full;
	u64  db_empty;
	u64  db_drop;
	u64  db_state_transitions;
	u64  db_fc_interruptions;
	u64  tcam_full;
	u64  act_ofld_conn_fails;
	u64  pas_ofld_conn_fails;
};

struct c4iw_rdev {
	struct c4iw_resource resource;
	unsigned long qpshift;
	u32 qpmask;
	unsigned long cqshift;
	u32 cqmask;
	struct c4iw_dev_ucontext uctx;
	struct gen_pool *pbl_pool;
	struct gen_pool *rqt_pool;
	struct gen_pool *ocqp_pool;
	u32 flags;
	struct cxgb4_lld_info lldi;
	unsigned long bar2_pa;
	void __iomem *bar2_kva;
	unsigned long oc_mw_pa;
	void __iomem *oc_mw_kva;
	struct c4iw_stats stats;
	struct t4_dev_status_page *status_page;
};

static inline int c4iw_fatal_error(struct c4iw_rdev *rdev)
{
	return rdev->flags & T4_FATAL_ERROR;
}

static inline int c4iw_num_stags(struct c4iw_rdev *rdev)
{
	return min((int)T4_MAX_NUM_STAG, (int)(rdev->lldi.vr->stag.size >> 5));
}

#define C4IW_WR_TO (30*HZ)

struct c4iw_wr_wait {
	struct completion completion;
	int ret;
};

static inline void c4iw_init_wr_wait(struct c4iw_wr_wait *wr_waitp)
{
	wr_waitp->ret = 0;
	init_completion(&wr_waitp->completion);
}

static inline void c4iw_wake_up(struct c4iw_wr_wait *wr_waitp, int ret)
{
	wr_waitp->ret = ret;
	complete(&wr_waitp->completion);
}

static inline int c4iw_wait_for_reply(struct c4iw_rdev *rdev,
				 struct c4iw_wr_wait *wr_waitp,
				 u32 hwtid, u32 qpid,
				 const char *func)
{
	unsigned to = C4IW_WR_TO;
	int ret;

	do {
		ret = wait_for_completion_timeout(&