/* EP80579 LEB: configuration and access to an XHFC-4SU via CS0.
 *
 * Copyright (C) 2010,2012  Avencall
 * Authors:
 *	Noe Rubinstein <nrubinstein@proformatique.com>
 *	Guillaume Knispel <gknispel@proformatique.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */


/*****************************************************************************/

#ifndef _XHFC_LEB_H_
#define _XHFC_LEB_H_

#include <linux/kernel.h>
#include <linux/pci.h>

#include "xhfc.h"

#define LEB_CSRBAR      0
#define LEB_MMBAR       1

void leb_init(struct xhfc_pi *leb);

static inline u8 read_xhfc(struct xhfc *xhfc, u8 reg_addr)
{
	u8 __iomem *cs_n0 = xhfc->pi->cs_n0;

	return readb(&cs_n0[reg_addr]);
}

static inline void write_xhfc(struct xhfc *xhfc, u8 reg_addr, u8 value)
{
	u8 __iomem *cs_n0 = xhfc->pi->cs_n0;

	writeb(value, &cs_n0[reg_addr]);
}

static inline void write_xhfc_soft_conf(struct xhfc *xhfc, u8 soft_conf)
{
	u8 __iomem *cs_n1 = xhfc->pi->cs_n1;

	if (DBG_REGS)
		printk(KERN_INFO "SOFTCONF: %02x\n", soft_conf);

	writeb(soft_conf, &cs_n1[0]);

	/* ensure the write has been completed: */
	(void)readb(&cs_n1[0]);
}

#define read_xhfc(x, reg) ({						\
		u8 _res = read_xhfc(x, reg);				\
		if (DBG_REGS) printk(KERN_DEBUG #reg " -> %02x\n", _res);\
		_res;							\
	})

#define write_xhfc(x, reg, val) ({					\
		if (DBG_REGS) printk(KERN_DEBUG #reg " <- %02x\n", val);	\
		write_xhfc(x, reg, val);				\
	})

struct tlp_leb_regs {
	u32	timing_cs[8];
	u32	cnfg0;
	u32	_rsvd1[63];
	u32	parity_status;
};

#endif	/* _XHFC_LEB_H_ */