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/* $OpenBSD: cn30xxfau.c,v 1.5 2014/08/11 18:08:17 miod Exp $ */
/*
* Copyright (c) 2007 Internet Initiative Japan, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <machine/octeonvar.h>
#include <octeon/dev/cn30xxfaureg.h>
#include <octeon/dev/cn30xxfauvar.h>
int64_t cn30xxfau_op_load(uint64_t);
void cn30xxfau_op_iobdma(int, uint64_t);
void cn30xxfau_op_store(uint64_t, int64_t);
int64_t cn30xxfau_op_load_paddr(int, int, int) __unused;
void cn30xxfau_op_iobdma_store_data(int, int, int, int, int);
void cn30xxfau_op_store_paddr(int, int, int64_t);
/* ---- utilities */
int64_t
cn30xxfau_op_load(uint64_t args)
{
paddr_t addr;
addr =
((uint64_t)1 << 48) |
((uint64_t)(CN30XXFAU_MAJORDID & 0x1f) << 43) |
((uint64_t)(CN30XXFAU_SUBDID & 0x7) << 40) |
((uint64_t)(args & 0xfffffffffULL) << 0);
return octeon_xkphys_read_8(addr);
}
void
cn30xxfau_op_store(uint64_t args, int64_t value)
{
paddr_t addr;
addr =
((uint64_t)1 << 48) |
((uint64_t)(CN30XXFAU_MAJORDID & 0x1f) << 43) |
((uint64_t)(CN30XXFAU_SUBDID & 0x7) << 40) |
((uint64_t)(args & 0xfffffffffULL) << 0);
octeon_xkphys_write_8(addr, value);
}
/* ---- operation primitives */
/*
* 3.4 Fetch-and-Add Operations
*/
/* 3.4.1 Load Operations */
/* Load Physical Address for FAU Operations */
int64_t
cn30xxfau_op_load_paddr(int incval, int tagwait, int reg)
{
uint64_t args;
args =
((uint64_t)(incval & 0x3fffff) << 14) |
((uint64_t)(tagwait & 0x1) << 13) |
((uint64_t)(reg & 0x7ff) << 0);
return cn30xxfau_op_load(args);
}
/* 3.4.3 Store Operations */
/* Store Physical Address for FAU Operations */
void
cn30xxfau_op_store_paddr(int noadd, int reg, int64_t value)
{
uint64_t args;
args =
((uint64_t)(noadd & 0x1) << 13) |
((uint64_t)(reg & 0x7ff) << 0);
cn30xxfau_op_store(args, value);
}
/* ---- API */
void
cn30xxfau_op_init(struct cn30xxfau_desc *fd, size_t scroff, size_t regno)
{
fd->fd_scroff = scroff;
fd->fd_regno = regno;
}
uint64_t
cn30xxfau_op_save(struct cn30xxfau_desc *fd)
{
mips_sync();
return octeon_cvmseg_read_8(fd->fd_scroff);
}
void
cn30xxfau_op_restore(struct cn30xxfau_desc *fd, uint64_t backup)
{
octeon_cvmseg_write_8(fd->fd_scroff, backup);
}
int64_t
cn30xxfau_op_inc_8(struct cn30xxfau_desc *fd, int64_t v)
{
cn30xxfau_op_iobdma_store_data(fd->fd_scroff, v, 0, OCT_FAU_OP_SIZE_64/* XXX */,
fd->fd_regno);
mips_sync();
return octeon_cvmseg_read_8(fd->fd_scroff)/* XXX */;
}
int64_t
cn30xxfau_op_incwait_8(struct cn30xxfau_desc *fd, int v)
{
cn30xxfau_op_iobdma_store_data(fd->fd_scroff, v, 1, OCT_FAU_OP_SIZE_64/* XXX */,
fd->fd_regno);
/* XXX */
mips_sync();
/* XXX */
return octeon_cvmseg_read_8(fd->fd_scroff)/* XXX */;
}
void
cn30xxfau_op_add_8(struct cn30xxfau_desc *fd, int64_t v)
{
cn30xxfau_op_store_paddr(0, fd->fd_regno, v);
}
void
cn30xxfau_op_set_8(struct cn30xxfau_desc *fd, int64_t v)
{
cn30xxfau_op_store_paddr(1, fd->fd_regno, v);
}
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