gtvar.h

/*  $NetBSD: gtvar.h,v 1.7.4.1 2005/04/29 11:28:56 kent Exp $   */

/*
 * Copyright (c) 2002 Allegro Networks, Inc., Wasabi Systems, 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed for the NetBSD Project by
 *      Allegro Networks, Inc., and Wasabi Systems, Inc.
 * 4. The name of Allegro Networks, Inc. may not be used to endorse
 *    or promote products derived from this software without specific prior
 *    written permission.
 * 5. The name of Wasabi Systems, Inc. may not be used to endorse
 *    or promote products derived from this software without specific prior
 *    written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY ALLEGRO NETWORKS, INC. AND
 * WASABI SYSTEMS, INC. ``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 EITHER ALLEGRO NETWORKS, INC. OR WASABI SYSTEMS, INC.
 * 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.
 */

/*
 * gtvar.h -- placeholder for GT system controller driver
 */
#ifndef _DISCOVERY_DEV_GTVAR_H_
#define _DISCOVERY_DEV_GTVAR_H_

#include <sys/systm.h>

struct gt_softc {
#ifndef __rtems__
    struct device gt_dev;
    bus_dma_tag_t gt_dmat;
    bus_space_tag_t gt_memt;    /* the GT itself */
    bus_space_tag_t gt_pci0_memt;   /* PCI0 mem space */
    bus_space_tag_t gt_pci0_iot;    /* PCI0 i/o space */
    boolean_t gt_pci0_host;     /* We're host on PCI0 if TRUE */
    bus_space_tag_t gt_pci1_memt;   /* PCI1 mem space */
    bus_space_tag_t gt_pci1_iot;    /* PCI1 i/o space */
    boolean_t gt_pci1_host;     /* We're host on PCI1 if TRUE */

    bus_space_handle_t gt_memh; /* to access the GT registers */
#else
    unsigned            gt_memh;
#endif
    int gt_childmask;       /* what children are present */
};

#define GT_CHILDOK(gt, ga, cd, pos, max) \
    (((ga)->ga_unit) < (max) &&  \
        !((gt)->gt_childmask & (1 << (((ga)->ga_unit) + (pos)))) && \
        !strcmp((ga)->ga_name, (cd)->cd_name))

#define GT_MPSCOK(gt, ga, cd)       GT_CHILDOK((gt), (ga), (cd), 0, 2)
#define GT_PCIOK(gt, ga, cd)        GT_CHILDOK((gt), (ga), (cd), 2, 2)
#define GT_ETHEROK(gt, ga, cd)      GT_CHILDOK((gt), (ga), (cd), 4, 3)
#define GT_OBIOOK(gt, ga, cd)       GT_CHILDOK((gt), (ga), (cd), 7, 5)
#define GT_I2COK(gt, ga, cd)        GT_CHILDOK((gt), (ga), (cd), 12, 1)

#define GT_CHILDFOUND(gt, ga, pos) \
    ((void)(((gt)->gt_childmask |= (1 << (((ga)->ga_unit) + (pos))))))

#define GT_MPSCFOUND(gt, ga)        GT_CHILDFOUND((gt), (ga), 0)
#define GT_PCIFOUND(gt, ga)     GT_CHILDFOUND((gt), (ga), 2)
#define GT_ETHERFOUND(gt, ga)       GT_CHILDFOUND((gt), (ga), 4)
#define GT_OBIOFOUND(gt, ga)        GT_CHILDFOUND((gt), (ga), 7)
#define GT_I2CFOUND(gt, ga)     GT_CHILDFOUND((gt), (ga), 12)

#ifndef __rtems__
struct gt_attach_args {
    const char *ga_name;        /* class name of device */
    bus_dma_tag_t ga_dmat;      /* dma tag */
    bus_space_tag_t ga_memt;    /* GT bus space tag */
    bus_space_handle_t ga_memh; /* GT bus space handle */
    int ga_unit;            /* instance of ga_name */
};

struct obio_attach_args {
    const char *oa_name;        /* call name of device */
    bus_space_tag_t oa_memt;    /* bus space tag */
    bus_addr_t oa_offset;       /* offset (absolute) to device */
    bus_size_t oa_size;     /* size (strided) of device */
    int oa_irq;         /* irq */
};
#endif

#ifdef _KERNEL
#ifndef __rtems__
#include "locators.h"
#endif

#ifdef DEBUG
extern int gtpci_debug;
#endif

/*
 * Locators for GT private devices, as specified to config.
 */
#define GT_UNK_UNIT     GTCF_UNIT_DEFAULT   /* wcarded 'function' */

#define OBIO_UNK_OFFSET     OBIOCF_OFFSET_DEFAULT   /* wcarded 'offset' */

#define OBIO_UNK_SIZE       OBIOCF_SIZE_DEFAULT /* wcarded 'size' */

#define OBIO_UNK_IRQ        OBIOCF_IRQ_DEFAULT  /* wcarded 'irq' */

void    gt_attach_common(struct gt_softc *);
uint32_t gt_read_mpp(void);
int gt_cfprint(void *, const char *);

#ifndef __rtems__
/* int     gt_bs_extent_init(struct discovery_bus_space *, char *);  AKB */
int gt_mii_read(struct device *, struct device *, int, int);
void    gt_mii_write(struct device *, struct device *, int, int, int);
int gtget_macaddr(struct gt_softc *,int, char *);

void    gt_watchdog_service(void);
bus_addr_t gt_dma_phys_to_bus_mem(bus_dma_tag_t, bus_addr_t);
bus_addr_t gt_dma_bus_mem_to_phys(bus_dma_tag_t, bus_addr_t);

#define gt_read(gt,o) \
    bus_space_read_4((gt)->gt_memt, (gt)->gt_memh, (o))
#define gt_write(gt,o,v) \
    bus_space_write_4((gt)->gt_memt, (gt)->gt_memh, (o), (v))
#else
#endif

#if defined(__powerpc__)
static __inline volatile int
atomic_add(volatile int *p, int v)
{
    int rv;
    int rtmp;

    __asm __volatile(
    "1: lwarx   %0,0,%3\n"
    "   add %1,%4,%0\n"
    "   stwcx.  %1,0,%3\n"
    "   bne-    1b\n"
    "   sync"
            : "=&r"(rv), "=&r"(rtmp), "=m"(*p)
            : "r"(p), "r"(v), "m"(*p)
            : "cc");

    return rv;
}

#endif /* __powerpc__ */

#endif /* _KERNEL */

#endif /* _DISCOVERY_DEV_GTVAR_H_ */