iCE40/yosys - clone of https://github.com/YosysHQ/yosys

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author	Eddie Hung <eddie@fpgeh.com>	2019-12-11 13:02:07 -0800
committer	Eddie Hung <eddie@fpgeh.com>	2019-12-11 13:02:07 -0800
commit	f022645cd2564ef47a6e8cf80c1452cd25f7ace2 (patch)
tree	20d522d3b2f5e1b852895078bb7cad96a8b92e3f /passes/sat/assertpmux.cc
parent	613334d9dcb5c190de8396ff38e2ae73259aa7bf (diff)
download	yosys-f022645cd2564ef47a6e8cf80c1452cd25f7ace2.tar.gz yosys-f022645cd2564ef47a6e8cf80c1452cd25f7ace2.tar.bz2 yosys-f022645cd2564ef47a6e8cf80c1452cd25f7ace2.zip

Fix bitwidth mismatch; suppresses iverilog warning

Diffstat (limited to 'passes/sat/assertpmux.cc')

0 files changed, 0 insertions, 0 deletions

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/**
 * @file
 * @section AUTHORS
 *
 * Copyright (C) 2010  Rafal Wojtczuk  <rafal@invisiblethingslab.com>
 *
 *  Authors:
 *       Rafal Wojtczuk  <rafal@invisiblethingslab.com>
 *       Daniel De Graaf <dgdegra@tycho.nsa.gov>
 *
 * @section LICENSE
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
 *
 * @section DESCRIPTION
 *
 *  This file contains the communications interface built on the ring buffer.
 */

#include <sys/types.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <sys/uio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>

#include <xenctrl.h>
#include <libxenvchan.h>

#ifndef PAGE_SHIFT
#define PAGE_SHIFT 12
#endif

#ifndef PAGE_SIZE
#define PAGE_SIZE 4096
#endif


static inline uint32_t rd_prod(struct libxenvchan *ctrl)
{
	return ctrl->read.shr->prod;
}

static inline uint32_t* _rd_cons(struct libxenvchan *ctrl)
{
	return &ctrl->read.shr->cons;
}
#define rd_cons(x) (*_rd_cons(x))

static inline uint32_t* _wr_prod(struct libxenvchan *ctrl)
{
	return &ctrl->write.shr->prod;
}
#define wr_prod(x) (*_wr_prod(x))

static inline uint32_t wr_cons(struct libxenvchan *ctrl)
{
	return ctrl->write.shr->cons;
}

static inline const void* rd_ring(struct libxenvchan *ctrl)
{
	return ctrl->read.buffer;
}

static inline void* wr_ring(struct libxenvchan *ctrl)
{
	return ctrl->write.buffer;
}

static inline uint32_t wr_ring_size(struct libxenvchan *ctrl)
{
	return (1 << ctrl->write.order);
}

static inline uint32_t rd_ring_size(struct libxenvchan *ctrl)
{
	return (1 << ctrl->read.order);
}

static inline void request_notify(struct libxenvchan *ctrl, uint8_t bit)
{
	uint8_t *notify = ctrl->is_server ? &ctrl->ring->cli_notify : &ctrl->ring->srv_notify;
	__sync_or_and_fetch(notify, bit);
	xen_mb(); /* post the request /before/ caller re-reads any indexes */
}

static inline int send_notify(struct libxenvchan *ctrl, uint8_t bit)
{
	uint8_t *notify, prev;
	xen_mb(); /* caller updates indexes /before/ we decode to notify */
	notify = ctrl->is_server ? &ctrl->ring->srv_notify : &ctrl->ring->cli_notify;
	prev = __sync_fetch_and_and(notify, ~bit);
	if (prev & bit)
		return xc_evtchn_notify(ctrl->event, ctrl->event_port);


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