/*      $NetBSD: gemini.h,v 1.8 2008/12/06 05:22:39 cliff Exp $ */

/*-
 * Copyright (c) 2008 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Matt Thomas <matt@3am-software.com>
 *
 * 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 _EVBARM_GEMINI_GEMINI_H
#define _EVBARM_GEMINI_GEMINI_H

/*
 * sanity check opt_gemini.h
 */
#include "opt_gemini.h"
#if !defined(GEMINI)
# error must define GEMINI to use gemini.h
#endif
#if !defined(GEMINI_SINGLE) && !defined(GEMINI_MASTER) && !defined(GEMINI_SLAVE)
# error must define one of GEMINI_SINGLE, GEMINI_MASTER, or GEMINI_SLAVE
#endif
#if defined(GEMINI_SINGLE)
# if defined(GEMINI_MASTER) || defined(GEMINI_SLAVE)
#  error GEMINI_SINGLE can not define either GEMINI_MASTER or GEMINI_SLAVE
# endif
#else
# if defined(GEMINI_MASTER) && defined(GEMINI_SLAVE)
#  error can not define both GEMINI_MASTER and GEMINI_SLAVE
# endif
#endif

#include <machine/vmparam.h>
#include <arm/gemini/gemini_reg.h>


/*
 * Kernel VM space: 192MB at KERNEL_VM_BASE
 */
#define KERNEL_VM_BASE          ((KERNEL_BASE + 0x01000000) & ~(0x400000-1))
#define KERNEL_VM_SIZE          0x0C000000

/*
 * We devmap IO starting at KERNEL_VM_BASE + KERNEL_VM_SIZE
 */
#define GEMINI_KERNEL_IO_VBASE  (KERNEL_VM_BASE + KERNEL_VM_SIZE)
#define GEMINI_GLOBAL_VBASE     GEMINI_KERNEL_IO_VBASE
#define GEMINI_WATCHDOG_VBASE   (GEMINI_GLOBAL_VBASE   + L1_S_SIZE)
#define GEMINI_UART_VBASE       (GEMINI_WATCHDOG_VBASE + L1_S_SIZE)
#define GEMINI_LPCHC_VBASE      (GEMINI_UART_VBASE     + L1_S_SIZE)
#define GEMINI_LPCIO_VBASE      (GEMINI_LPCHC_VBASE    + L1_S_SIZE)
#define GEMINI_TIMER_VBASE      (GEMINI_LPCIO_VBASE    + L1_S_SIZE)
#define GEMINI_DRAMC_VBASE      (GEMINI_TIMER_VBASE    + L1_S_SIZE)

/*
 * mapping of physical RAM
 */
#define GEMINI_RAMDISK_VBASE    (GEMINI_DRAMC_VBASE    + L1_S_SIZE)
#define GEMINI_RAMDISK_PBASE    0x00800000
#define GEMINI_RAMDISK_SIZE     0x00300000
#define GEMINI_RAMDISK_PEND     (GEMINI_RAMDISK_PBASE + GEMINI_RAMDISK_SIZE)

#define GEMINI_IPMQ_VBASE                                       \
        ((GEMINI_RAMDISK_VBASE + GEMINI_RAMDISK_SIZE            \
          + (L1_S_SIZE * 4) - 1) & ~((L1_S_SIZE * 4) - 1))
                /* round up for l2pt alignment */
#ifdef GEMINI_SLAVE
# define        GEMINI_IPMQ_PBASE       (GEMINI_RAMDISK_PEND + (GEMINI_BUSBASE * 1024 * 1024))
#else
# define        GEMINI_IPMQ_PBASE       GEMINI_RAMDISK_PEND
#endif
#if 0
# define        GEMINI_IPMQ_SIZE        (2 * sizeof(ipm_queue_t))
#else
# define        GEMINI_IPMQ_SIZE        (2 * 4096)
#endif
#define GEMINI_IPMQ_PEND        (GEMINI_IPMQ_PBASE + GEMINI_IPMQ_SIZE)

/*
 * reserve physical RAM, as needed
 *
 * NOTE: the RAM used for the IPM queues is owned by the MASTER
 * so MASTER needs to reserve those pages from VM; the slave does not.
 * Hence, GEMINI_RAM_RESV_PEND is adjusted for the MASTER but not the SLAVE.
 */
#define GEMINI_RAM_RESV_PBASE   0
#define GEMINI_RAM_RESV_PEND    0
#if defined(MEMORY_DISK_DYNAMIC)
# undef  GEMINI_RAM_RESV_PBASE
# undef  GEMINI_RAM_RESV_PEND
# define GEMINI_RAM_RESV_PBASE  GEMINI_RAMDISK_PBASE
# define GEMINI_RAM_RESV_PEND   GEMINI_RAMDISK_PEND
#endif
#if (NGEMINIIPM > 0) && !defined(GEMINI_SLAVE)
# if (NGEMINIIPM > 1)
#  error unexpected NGEMINIIPM > 1
# endif
# if (GEMINI_RAM_RESV_PBASE == 0)
#  undef  GEMINI_RAM_RESV_PBASE
#  define GEMINI_RAM_RESV_PBASE GEMINI_IPMQ_PBASE
# endif
# undef  GEMINI_RAM_RESV_PEND
# define GEMINI_RAM_RESV_PEND   GEMINI_IPMQ_PEND
#endif

/*
 * to map all of memory, including RAM owned by both core.
 * we start at nice round vbase to simplify conversion
 * from VA to PA and back
 */
#define GEMINI_ALLMEM_PBASE     0
#define GEMINI_ALLMEM_VBASE     0xf0000000
#define GEMINI_ALLMEM_SIZE      128             /* units of MB */


#endif /* _EVBARM_GEMINI_GEMINI_H */