/*      $NetBSD: mainbus.c,v 1.10 2021/09/06 14:03:18 jmcneill 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.10 2021/09/06 14:03:18 jmcneill Exp $");

#define _MIPS_BUS_DMA_PRIVATE

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/bus.h>

#include <mips/cavium/include/mainbusvar.h>
#include <mips/cavium/octeonvar.h>

#include <dev/fdt/fdtvar.h>

static int      mainbus_match(device_t, struct cfdata *, void *);
static void     mainbus_attach(device_t, device_t, void *);
static void     mainbus_attach_static(device_t);
static void     mainbus_attach_devicetree(device_t);
static int      mainbus_submatch(device_t, cfdata_t, const int *, void *);
static int      mainbus_print(void *, const char *);

static void     simplebus_bus_io_init(bus_space_tag_t, void *);

CFATTACH_DECL_NEW(mainbus, sizeof(device_t), mainbus_match, mainbus_attach,
   NULL, NULL);

static struct mips_bus_space simplebus_bus_tag;

static struct mips_bus_dma_tag simplebus_dma_tag = {
       ._cookie = NULL,
       ._wbase = 0,
       ._bounce_alloc_lo = 0,
       ._bounce_alloc_hi = 0,
       ._dmamap_ops = _BUS_DMAMAP_OPS_INITIALIZER,
       ._dmamem_ops = _BUS_DMAMEM_OPS_INITIALIZER,
       ._dmatag_ops = _BUS_DMATAG_OPS_INITIALIZER,
};

static int
mainbus_match(device_t parent, struct cfdata *match, void *aux)
{
       static int once = 0;

       if (once != 0)
               return 0;
       once = 1;

       return 1;
}

static void
mainbus_attach(device_t parent, device_t self, void *aux)
{
       aprint_normal("\n");

       if (fdtbus_get_data() != NULL) {
               mainbus_attach_devicetree(self);
       } else {
               mainbus_attach_static(self);
       }
}

static void
mainbus_attach_static(device_t self)
{
       struct mainbus_attach_args aa;
       int i;

       for (i = 0; i < (int)mainbus_ndevs; i++) {
               aa.aa_name = mainbus_devs[i];
               config_found(self, &aa, mainbus_print,
                   CFARGS(.submatch = mainbus_submatch,
                          .iattr = "mainbus"));
       }
}

extern struct octeon_config octeon_configuration;
extern void octpow_bootstrap(struct octeon_config *);
extern void octfpa_bootstrap(struct octeon_config *);

static void
mainbus_attach_devicetree(device_t self)
{
       const struct fdt_console *cons = fdtbus_get_console();
       struct mainbus_attach_args aa;
       struct fdt_attach_args faa;
       u_int uart_freq;

       aa.aa_name = "cpunode";
       config_found(self, &aa, mainbus_print,
           CFARGS(.submatch = mainbus_submatch,
                  .iattr = "mainbus"));

       aa.aa_name = "iobus";
       config_found(self, &aa, mainbus_print,
           CFARGS(.submatch = mainbus_submatch,
                  .iattr = "mainbus"));

       simplebus_bus_io_init(&simplebus_bus_tag, NULL);

       faa.faa_bst = &simplebus_bus_tag;
       faa.faa_dmat = &simplebus_dma_tag;
       faa.faa_name = "";

       if (cons != NULL) {
               faa.faa_phandle = fdtbus_get_stdout_phandle();

               if (of_getprop_uint32(faa.faa_phandle, "clock-frequency",
                   &uart_freq) != 0) {
                       uart_freq = octeon_ioclock_speed();
               }

               if (uart_freq > 0)
                       delay(640000000 / uart_freq);

               cons->consinit(&faa, uart_freq);
       }

       faa.faa_phandle = OF_peer(0);
       config_found(self, &faa, NULL,
           CFARGS(.iattr = "fdt"));
}

static int
mainbus_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux)
{
       struct mainbus_attach_args *aa = aux;

       if (strcmp(cf->cf_name, aa->aa_name) != 0)
               return 0;

       return config_match(parent, cf, aux);
}

static int
mainbus_print(void *aux, const char *pnp)
{
       struct mainbus_attach_args *aa = aux;

       if (pnp != 0)
               return QUIET;

       if (pnp)
               aprint_normal("%s at %s", aa->aa_name, pnp);

       return UNCONF;
}

/* ---- bus_space(9) */
#define CHIP                    simplebus
#define CHIP_IO
#define CHIP_ACCESS_SIZE        8

#define CHIP_W1_BUS_START(v)    0x0000000000000000ULL
#define CHIP_W1_BUS_END(v)      0x7fffffffffffffffULL
#define CHIP_W1_SYS_START(v)    0x8000000000000000ULL
#define CHIP_W1_SYS_END(v)      0xffffffffffffffffULL

#include <mips/mips/bus_space_alignstride_chipdep.c>

bus_space_tag_t
fdtbus_bus_tag_create(int phandle, uint32_t flags)
{
       return &simplebus_bus_tag;
}