/*      $NetBSD: sramvar.h,v 1.1 2026/06/27 13:28:35 rkujawa Exp $      */

/*-
 * Copyright (c) 2026 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Radoslaw Kujawa and Robert Swindells.
 *
 * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
 */

#ifndef _POWERPC_MPC5200_SRAMVAR_H_
#define _POWERPC_MPC5200_SRAMVAR_H_

#include <sys/device.h>
#include <sys/bus.h>
#include <sys/vmem.h>

struct sram_softc {
        device_t                sc_dev;
        bus_space_tag_t         sc_iot;
        bus_space_handle_t      sc_ioh;
        bus_addr_t              sc_pa;          /* physical SRAM base */
        vaddr_t                 sc_kva;         /* CPU virtual base */
        bus_size_t              sc_size;
        vmem_t                  *sc_arena;
};

bus_addr_t      sram_alloc(size_t, size_t);     /* size, alignment -> phys, 0 fail */
void            sram_free(bus_addr_t, size_t);
void *          sram_kva(bus_addr_t);           /* phys SRAM addr -> CPU pointer */
bool            sram_available(void);           /* did the SRAM attach? */

#endif /* _POWERPC_MPC5200_SRAMVAR_H_ */