path: root/drivers/net/ethernet/mellanox/mlx4/mlx4.h

/*
 * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
 * Copyright (c) 2005, 2006, 2007 Cisco Systems.  All rights reserved.
 * Copyright (c) 2005, 2006, 2007, 2008 Mellanox Technologies. All rights reserved.
 * Copyright (c) 2004 Voltaire, 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 MLX4_H
#define MLX4_H

#include <linux/mutex.h>
#include <linux/radix-tree.h>
#include <linux/timer.h>
#include <linux/semaphore.h>
#include <linux/workqueue.h>

#include <linux/mlx4/device.h>
#include <linux/mlx4/driver.h>
#include <linux/mlx4/doorbell.h>
#include <linux/mlx4/cmd.h>

#define DRV_NAME	"mlx4_core"
#define PFX		DRV_NAME ": "
#define DRV_VERSION	"1.1"
#define DRV_RELDATE	"Dec, 2011"

enum {
	MLX4_HCR_BASE		= 0x80680,
	MLX4_HCR_SIZE		= 0x0001c,
	MLX4_CLR_INT_SIZE	= 0x00008,
	MLX4_SLAVE_COMM_BASE	= 0x0,
	MLX4_COMM_PAGESIZE	= 0x1000
};

enum {
	MLX4_MAX_MGM_ENTRY_SIZE = 0x1000,
	MLX4_MAX_QP_PER_MGM	= 4 * (MLX4_MAX_MGM_ENTRY_SIZE / 16 - 2),
	MLX4_MTT_ENTRY_PER_SEG	= 8,
};

enum {
	MLX4_NUM_PDS		= 1 << 15
};

enum {
	MLX4_CMPT_TYPE_QP	= 0,
	MLX4_CMPT_TYPE_SRQ	= 1,
	MLX4_CMPT_TYPE_CQ	= 2,
	MLX4_CMPT_TYPE_EQ	= 3,
	MLX4_CMPT_NUM_TYPE
};

enum {
	MLX4_CMPT_SHIFT		= 24,
	MLX4_NUM_CMPTS		= MLX4_CMPT_NUM_TYPE << MLX4_CMPT_SHIFT
};

enum mlx4_mr_state {
	MLX4_MR_DISABLED = 0,
	MLX4_MR_EN_HW,
	MLX4_MR_EN_SW
};

#define MLX4_COMM_TIME		10000
enum {
	MLX4_COMM_CMD_RESET,
	MLX4_COMM_CMD_VHCR0,
	MLX4_COMM_CMD_VHCR1,
	MLX4_COMM_CMD_VHCR2,
	MLX4_COMM_CMD_VHCR_EN,
	MLX4_COMM_CMD_VHCR_POST,
	MLX4_COMM_CMD_FLR = 254
};

/*The flag indicates that the slave should delay the RESET cmd*/
#define MLX4_DELAY_RESET_SLAVE 0xbbbbbbb
/*indicates how many retries will be done if we are in the middle of FLR*/
#define NUM_OF_RESET_RETRIES	10
#define SLEEP_TIME_IN_RESET	(2 * 1000)
enum mlx4_resource {
	RES_QP,
	RES_CQ,
	RES_SRQ,
	RES_XRCD,
	RES_MPT,
	RES_MTT,
	RES_MAC,
	RES_VLAN,
	RES_EQ,
	RES_COUNTER,
	MLX4_NUM_OF_RESOURCE_TYPE
};

enum mlx4_alloc_mode {
	RES_OP_RESERVE,
	RES_OP_RESERVE_AND_MAP,
	RES_OP_MAP_ICM,
};


/*
 *Virtual HCR structures.
 * mlx4_vhcr is the sw representation, in machine endianess
 *
 * mlx4_vhcr_cmd is the formalized structure, the one that is passed
 * to FW to go through communication channel.
 * It is big endian, and has the same structure as the physical HCR
 * used by command interface
 */
struct mlx4_vhcr {
	u64	in_param;
	u64	out_param;
	u32	in_modifier;
	u32	errno;
	u16	op;
	u16	token;
	u8	op_modifier;
	u8	e_bit;
};

struct mlx4_vhcr_cmd {
	__be64 in_param;
	__be32 in_modifier;
	__be64 out_param;
	__be16 token;
	u16 reserved;
	u8 status;
	u8 flags;
	__be16 opcode;
};

struct mlx4_cmd_info {
	u16 opcode;
	bool has_inbox;
	bool has_outbox;
	bool out_is_imm;
	bool encode_slave_id;
	int (*verify)(struct mlx4_dev *dev, int slave, struct mlx4_vhcr *vhcr,
		      struct mlx4_cmd_mailbox *inbox);
	int (*wrapper)(struct mlx4_dev *dev, int slave, struct mlx4_vhcr *vhcr,
		       struct mlx4_cmd_mailbox *inbox,
		       struct mlx4_cmd_mailbox *outbox,
		       struct mlx4_cmd_info *cmd);
};

#ifdef CONFIG_MLX4_DEBUG
extern int mlx4_debug_level;
#else /* CONFIG_MLX4_DEBUG */
#define mlx4_debug_level	(0)
#endif /* CONFIG_MLX4_DEBUG */

#define mlx4_dbg(mdev, format, arg...)					\
do {									\
	if (mlx4_debug_level)						\
		dev_printk(KERN_DEBUG, &mdev->pdev->dev, format, ##arg); \
} while (0)

#define mlx4_err(mdev, format, arg...) \
	dev_err(&mdev->pdev->dev, format, ##arg)
#define mlx4_info(mdev, format, arg...) \
	dev_info(&mdev->pdev->dev, format, ##arg)
#define mlx4_warn(mdev, format, arg...) \
	dev_warn(&mdev->pdev->dev, format, ##arg)

extern int mlx4_log_num_mgm_entry_size;
extern int log_mtts_per_seg;

#define MLX4_MAX_NUM_SLAVES	(MLX4_MAX_NUM_PF + MLX4_MAX_NUM_VF)
#define ALL_SLAVES 0xff

struct mlx4_bitmap {
	u32			last;
	u32			top;
	u32			max;
	u32                     reserved_top;