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dddvb/ddbridge/ddbridge-io.h

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2017-08-02 20:22:52 +02:00
/*
* ddbridge-io.h: Digital Devices bridge I/O functions
*
* Copyright (C) 2010-2017 Digital Devices GmbH
* Ralph Metzler <rjkm@metzlerbros.de>
* Marcus Metzler <mocm@metzlerbros.de>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 only, as published by the Free Software Foundation.
*
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA
* Or, point your browser to http://www.gnu.org/copyleft/gpl.html
*/
#ifndef _DDBRIDGE_IO_H_
#define _DDBRIDGE_IO_H_
u32 ddblreadl(struct ddb_link *link, u32 adr);
void ddblwritel(struct ddb_link *link, u32 val, u32 adr);
u32 ddbreadl(struct ddb *dev, u32 adr);
void ddbwritel(struct ddb *dev, u32 val, u32 adr);
void gtlcpyto(struct ddb *dev, u32 adr, const u8 *buf,
unsigned int count);
void gtlcpyfrom(struct ddb *dev, u8 *buf, u32 adr, long count);
void ddbcpyto(struct ddb *dev, u32 adr, void *src, long count);
void ddbcpyfrom(struct ddb *dev, void *dst, u32 adr, long count);
static inline void ddbwriteb(struct ddb *dev, u32 val, u32 adr)
{
writeb(val, (char *) (dev->regs + (adr)));
}
static inline u32 ddbreadb(struct ddb *dev, u32 adr)
{
return readb((char *) (dev->regs + (adr)));
}
static inline void ddbwritel0(struct ddb_link *link, u32 val, u32 adr)
{
writel(val, (char *) (link->dev->regs + (adr)));
}
static inline u32 ddbreadl0(struct ddb_link *link, u32 adr)
{
return readl((char *) (link->dev->regs + (adr)));
}
#if 0
static inline void gtlw(struct ddb_link *link)
{
u32 count = 0;
static u32 max;
while (1 & ddbreadl0(link, link->regs + 0x10)) {
if (++count == 1024) {
pr_info("LTO\n");
break;
}
}
if (count > max) {
max = count;
pr_info("TO=%u\n", max);
}
if (ddbreadl0(link, link->regs + 0x10) & 0x8000)
pr_err("link error\n");
}
#else
static inline void gtlw(struct ddb_link *link)
{
while (1 & ddbreadl0(link, link->regs + 0x10))
;
}
#endif
#define ddbmemset(_dev, _adr, _val, _count) \
memset_io((char *) (_dev->regs + (_adr)), (_val), (_count))
#endif