/*
 * 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>

#define DRV_NAME	"mlx4_core"
#define DRV_VERSION	"1.0"
#define DRV_RELDATE	"July 14, 2011"

enum {
	MLX4_HCR_BASE		= 0x80680,
	MLX4_HCR_SIZE		= 0x0001c,
	MLX4_CLR_INT_SIZE	= 0x00008
};

enum {
	MLX4_MGM_ENTRY_SIZE	=  0x100,
	MLX4_QP_PER_MGM		= 4 * (MLX4_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
};

#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)

struct mlx4_bitmap {
	u32			last;
	u32			top;
	u32			max;
	u32                     reserved_top;
	u32			mask;
	u32			avail;
	spinlock_t		lock;
	unsigned long	       *table;
};

struct mlx4_buddy {
	unsigned long	      **bits;
	unsigned int	       *num_free;
	int			max_order;
	spinlock_t		lock;
};

struct mlx4_icm;

struct mlx4_icm_table {
	u64			virt;
	int			num_icm;
	int			num_obj;
	int			obj_size;
	int			lowmem;
	int			coherent;
	struct mutex		mutex;
	struct mlx4_icm	      **icm;
};

struct mlx4_eq {
	struct mlx4_dev	       *dev;
	void __iomem	       *doorbell;
	int			eqn;
	u32			cons_index;
	u16			irq;
	u16			have_irq;
	int			nent;
	struct mlx4_buf_list   *page_list;
	struct mlx4_mtt		mtt;
};

struct mlx4_profile {
	int			num_qp;
	int			rdmarc_per_qp;
	int			num_srq;
	int			num_cq;
	int			num_mcg;
	int			num_mpt;
	int			num_mtt;
};

struct mlx4_fw {
	u64			clr_int_base;
	u64			catas_offset;
	struct mlx4_icm	       *fw_icm;
	struct mlx4_icm	       *aux_icm;
	u32			catas_size;
	u16			fw_pages;
	u8			clr_int_bar;
	u8			catas_bar;
};

#define MGM_QPN_MASK       0x00FFFFFF
#define MGM_BLCK_LB_BIT    30

struct mlx4_promisc_qp {
	struct list_head list;
	u32 qpn;
};

struct mlx4_steer_index {
	struct list_head list;
	unsigned int index;
	struct list_head duplicates;
};

struct mlx4_mgm {
	__be32			next_gid_index;
	__be32			members_count;
	u32			reserved[2];
	u8			gid[16];
	__be32			qp[MLX4_QP_PER_MGM];
};
struct mlx4_cmd {
	struct pci_pool	       *pool;
	void __iomem	       *hcr;
	struct mutex		hcr_mutex;
	struct semaphore	poll_sem;
	struct semaphore	event_sem;
	int			max_cmds;
	spinlock_t		context_lock;
	int			free_head;
	struct mlx4_cmd_context *context;
	u16			token_mask;
	u8			use_events;
	u8			toggle;
};

struct mlx4_uar_table {
	struct mlx4_bitmap	bitmap;
};

struct mlx4_mr_table {
	struct mlx4_bitmap	mpt_bitmap;
	struct mlx4_buddy	mtt_buddy;
	u64			mtt_base;
	u64			mpt_base;
	struct mlx4_icm_table	mtt_table;
	struct mlx4_icm_table	dmpt_table;
};

struct mlx4_cq_table {
	struct mlx4_bitmap	bitmap;
	spinlock_t		lock;
	struct radix_tree_root	tree;
	struct mlx4_icm_table	table;
	struct mlx4_icm_table	cmpt_table;
};

struct mlx4_eq_table {
	struct mlx4_bitmap	bitmap;
	char		       *irq_names;
	void __iomem	       *clr_int;
	void __iomem	      **uar_map;
	u32			clr_mask;
	struct mlx4_eq	       *eq;
	struct mlx4_icm_table	table;
	struct mlx4_icm_table	cmpt_table;
	int			have_irq;
	u8			inta_pin;
};

struct mlx4_srq_table {
	struct mlx4_bitmap	bitmap;
	spinlock_t		lock;
	struct radix_tree_root	tree;
	struct mlx4_icm_table	table;
	struct mlx4_icm_table	cmpt_table;
};

struct mlx4_qp_table {
	struct mlx4_bitmap	bitmap;
	u32			rdmarc_base;
	int			rdmarc_shift;
	spinlock_t		lock;
	struct mlx4_icm_table	qp_table;
	struct mlx4_icm_table	auxc_table;
	struct mlx4_icm_table	altc_table;
	struct mlx4_icm_table	rdmarc_table;
	struct mlx4_icm_table	cmpt_table;
};

struct mlx4_mcg_table {
	struct mutex		mutex;
	struct mlx4_bitmap	bitmap;
	struct mlx4_icm_table	table;
};

struct mlx4_catas_err {
	u32 __iomem	       *map;
	struct timer_list	timer;
	struct list_head	list;
};

#define MLX4_MAX_MAC_NUM	128
#define MLX4_MAC_TABLE_SIZE	(MLX4_MAX_MAC_NUM << 3)

struct mlx4_mac_table {
	__be64			entries[MLX4_MAX_MAC_NUM];
	int			refs[MLX4_MAX_MAC_NUM];
	struct mutex		mutex;
	int			total;
	int			max;
};

#define MLX4_MAX_VLAN_NUM	128
#define MLX4_VLAN_TABLE_SIZE	(MLX4_MAX_VLAN_NUM << 2)

struct mlx4_vlan_table {
	__be32			entries[MLX4_MAX_VLAN_NUM];
	int			refs[MLX4_MAX_VLAN_NUM];
	struct mutex		mutex;
	int			total;
	int			max;
};

struct mlx4_mac_entry {
	u64 mac;
};

struct mlx4_port_info {
	struct mlx4_dev	       *dev;
	int			port;
	char			dev_name[16];
	struct device_attribute port_attr;
	enum mlx4_port_type	tmp_type;
	struct mlx4_mac_table	mac_table;
	struct radix_tree_root	mac_tree;
	struct mlx4_vlan_table	vlan_table;
	int			base_qpn;
};

struct mlx4_sense {
	struct mlx4_dev		*dev;
	u8			do_sense_port[MLX4_MAX_PORTS + 1];
	u8			sense_allowed[MLX4_MAX_PORTS + 1];
	struct delayed_work	sense_poll;
};

struct mlx4_msix_ctl {
	u64		pool_bm;
	spinlock_t	pool_lock;
};

struct mlx4_steer {
	struct list_head promisc_qps[MLX4_NUM_STEERS];
	struct list_head steer_entries[MLX4_NUM_STEERS];
	struct list_head high_prios;
};

struct mlx4_priv {
	struct mlx4_dev		dev;

	struct list_head	dev_list;
	struct list_head	ctx_list;
	spinlock_t		ctx_lock;

	struct list_head        pgdir_list;
	struct mutex            pgdir_mutex;

	struct mlx4_fw		fw;
	struct mlx4_cmd		cmd;

	struct mlx4_bitmap	pd_bitmap;
	struct mlx4_bitmap	xrcd_bitmap;
	struct mlx4_uar_table	uar_table;
	struct mlx4_mr_table	mr_table;
	struct mlx4_cq_table	cq_table;
	struct mlx4_eq_table	eq_table;
	struct mlx4_srq_table	srq_table;
	struct mlx4_qp_table	qp_table;
	struct mlx4_mcg_table	mcg_table;
	struct mlx4_bitmap	counters_bitmap;

	struct mlx4_catas_err	catas_err;

	void __iomem	       *clr_base;

	struct mlx4_uar		driver_uar;
	void __iomem	       *kar;
	struct mlx4_port_info	port[MLX4_MAX_PORTS + 1];
	struct mlx4_sense       sense;
	struct mutex		port_mutex;
	struct mlx4_msix_ctl	msix_ctl;
	struct mlx4_steer	*steer;
	struct list_head	bf_list;
	struct mutex		bf_mutex;
	struct io_mapping	*bf_mapping;
};

static inline struct mlx4_priv *mlx4_priv(struct mlx4_dev *dev)
{
	return container_of(dev, struct mlx4_priv, dev);
}

#define MLX4_SENSE_RANGE	(HZ * 3)

extern struct workqueue_struct *mlx4_wq;

u32 mlx4_bitmap_alloc(struct mlx4_bitmap *bitmap);
void mlx4_bitmap_free(struct mlx4_bitmap *bitmap, u32 obj);
u32 mlx4_bitmap_alloc_range(struct mlx4_bitmap *bitmap, int cnt, int align);
void mlx4_bitmap_free_range(struct mlx4_bitmap *bitmap, u32 obj, int cnt);
u32 mlx4_bitmap_avail(struct mlx4_bitmap *bitmap);
int mlx4_bitmap_init(struct mlx4_bitmap *bitmap, u32 num, u32 mask,
		     u32 reserved_bot, u32 resetrved_top);
void mlx4_bitmap_cleanup(struct mlx4_bitmap *bitmap);

int mlx4_reset(struct mlx4_dev *dev);

int mlx4_alloc_eq_table(struct mlx4_dev *dev);
void mlx4_free_eq_table(struct mlx4_dev *dev);

int mlx4_init_pd_table(struct mlx4_dev *dev);
int mlx4_init_xrcd_table(struct mlx4_dev *dev);
int mlx4_init_uar_table(struct mlx4_dev *dev);
int mlx4_init_mr_table(struct mlx4_dev *dev);
int mlx4_init_eq_table(struct mlx4_dev *dev);
int mlx4_init_cq_table(struct mlx4_dev *dev);
int mlx4_init_qp_table(struct mlx4_dev *dev);
int mlx4_init_srq_table(struct mlx4_dev *dev);
int mlx4_init_mcg_table(struct mlx4_dev *dev);

void mlx4_cleanup_pd_table(struct mlx4_dev *dev);
void mlx4_cleanup_xrcd_table(struct mlx4_dev *dev);
void mlx4_cleanup_uar_table(struct mlx4_dev *dev);
void mlx4_cleanup_mr_table(struct mlx4_dev *dev);
void mlx4_cleanup_eq_table(struct mlx4_dev *dev);
void mlx4_cleanup_cq_table(struct mlx4_dev *dev);
void mlx4_cleanup_qp_table(struct mlx4_dev *dev);
void mlx4_cleanup_srq_table(struct mlx4_dev *dev);
void mlx4_cleanup_mcg_table(struct mlx4_dev *dev);

void mlx4_start_catas_poll(struct mlx4_dev *dev);
void mlx4_stop_catas_poll(struct mlx4_dev *dev);
void mlx4_catas_init(void);
int mlx4_restart_one(struct pci_dev *pdev);
int mlx4_register_device(struct mlx4_dev *dev);
void mlx4_unregister_device(struct mlx4_dev *dev);
void mlx4_dispatch_event(struct mlx4_dev *dev, enum mlx4_dev_event type, int port);

struct mlx4_dev_cap;
struct mlx4_init_hca_param;

u64 mlx4_make_profile(struct mlx4_dev *dev,
		      struct mlx4_profile *request,
		      struct mlx4_dev_cap *dev_cap,
		      struct mlx4_init_hca_param *init_hca);

int mlx4_cmd_init(struct mlx4_dev *dev);
void mlx4_cmd_cleanup(struct mlx4_dev *dev);
void mlx4_cmd_event(struct mlx4_dev *dev, u16 token, u8 status, u64 out_param);
int mlx4_cmd_use_events(struct mlx4_dev *dev);
void mlx4_cmd_use_polling(struct mlx4_dev *dev);

void mlx4_cq_completion(struct mlx4_dev *dev, u32 cqn);
void mlx4_cq_event(struct mlx4_dev *dev, u32 cqn, int event_type);

void mlx4_qp_event(struct mlx4_dev *dev, u32 qpn, int event_type);

void mlx4_srq_event(struct mlx4_dev *dev, u32 srqn, int event_type);

void mlx4_handle_catas_err(struct mlx4_dev *dev);

int mlx4_SENSE_PORT(struct mlx4_dev *dev, int port,
		    enum mlx4_port_type *type);
void mlx4_do_sense_ports(struct mlx4_dev *dev,
			 enum mlx4_port_type *stype,
			 enum mlx4_port_type *defaults);
void mlx4_start_sense(struct mlx4_dev *dev);
void mlx4_stop_sense(struct mlx4_dev *dev);
void mlx4_sense_init(struct mlx4_dev *dev);
int mlx4_check_port_params(struct mlx4_dev *dev,
			   enum mlx4_port_type *port_type);
int mlx4_change_port_types(struct mlx4_dev *dev,
			   enum mlx4_port_type *port_types);

void mlx4_init_mac_table(struct mlx4_dev *dev, struct mlx4_mac_table *table);
void mlx4_init_vlan_table(struct mlx4_dev *dev, struct mlx4_vlan_table *table);

int mlx4_SET_PORT(struct mlx4_dev *dev, u8 port);
int mlx4_get_port_ib_caps(struct mlx4_dev *dev, u8 port, __be32 *caps);
int mlx4_check_ext_port_caps(struct mlx4_dev *dev, u8 port);

int mlx4_qp_detach_common(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
			  enum mlx4_protocol prot, enum mlx4_steer_type steer);
int mlx4_qp_attach_common(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
			  int block_mcast_loopback, enum mlx4_protocol prot,
			  enum mlx4_steer_type steer);
#endif /* MLX4_H */
