/*      $NetBSD: ar_conf.c,v 1.3 2015/06/09 22:50:50 matt Exp $ */
/*-
* Copyright (c) 2011 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Matt Thomas of 3am Software Foundry.
*
* 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.
*/

#include <sys/cdefs.h>

__KERNEL_RCSID(0, "$NetBSD: ar_conf.c,v 1.3 2015/06/09 22:50:50 matt Exp $");

#include <sys/param.h>
#include <sys/cpu.h>

#include "opt_wisoc.h"

#include <mips/cpuregs.h>
#include <mips/locore.h>

#include <mips/atheros/include/platform.h>
#include <mips/atheros/include/ar9344reg.h>

struct atheros_chip {
       const struct atheros_platformsw *ac_platformsw;
       const struct atheros_boardsw *ac_boardsw;
       uint8_t ac_chipid;
       uint8_t ac_chipmask;
       uint8_t ac_cid;
       uint8_t ac_pid;
       const char ac_name[8];
};

static const struct atheros_chip chips[] = {
#ifdef WISOC_AR5312
       {
               .ac_platformsw =        &ar5312_platformsw,
               .ac_boardsw =           &ar5312_boardsw,
               .ac_chipid =            ARCHIP_AR5312,
               .ac_chipmask =          0xff,
               .ac_cid =               MIPS_PRID_CID_MTI,
               .ac_pid =               MIPS_4Kc,
               .ac_name =              "AR5312"
       },
#endif
#ifdef WISOC_AR5315
       {
               .ac_platformsw =        &ar5315_platformsw,
               .ac_boardsw =           &ar5315_boardsw,
               .ac_chipid =            ARCHIP_AR5315,
               .ac_chipmask =          0xf0,
               .ac_cid =               MIPS_PRID_CID_MTI,
               .ac_pid =               MIPS_4Kc,
               .ac_name =              "AR5315"
       },
#endif
#ifdef WISOC_AR7100
       {
               .ac_platformsw =        &ar7100_platformsw,
               .ac_chipid =            ARCHIP_AR7130,
               .ac_chipmask =          0xf3,
               .ac_cid =               MIPS_PRID_CID_MTI,
               .ac_pid =               MIPS_24K,
               .ac_name =              "AR7130"
       }, {
               .ac_platformsw =        &ar7100_platformsw,
               .ac_chipid =            ARCHIP_AR7141,
               .ac_chipmask =          0xf3,
               .ac_cid =               MIPS_PRID_CID_MTI,
               .ac_pid =               MIPS_24K,
               .ac_name =              "AR7141"
       }, {
               .ac_platformsw =        &ar7100_platformsw,
               .ac_chipid =            ARCHIP_AR7161,
               .ac_chipmask =          0xf3,
               .ac_cid =               MIPS_PRID_CID_MTI,
               .ac_pid =               MIPS_24K,
               .ac_name =              "AR7161"
       },
#endif
#ifdef WISOC_AR9344
       {
               .ac_platformsw =        &ar9344_platformsw,
               .ac_chipid =            0x20,   /* 7240? */
               .ac_chipmask =          0xff,
               .ac_cid =               MIPS_PRID_CID_MTI,
               .ac_pid =               MIPS_74K,
               .ac_name =              "AR7240"
       }, {
               .ac_platformsw =        &ar9344_platformsw,
               .ac_chipid =            ARCHIP_AR9344,
               .ac_chipmask =          0xff,
               .ac_cid =               MIPS_PRID_CID_MTI,
               .ac_pid =               MIPS_74K,
               .ac_name =              "AR9344"
       },
#endif
};

__CTASSERT(__arraycount(chips) > 0);

const struct atheros_platformsw *platformsw;

static const struct atheros_chip *my_chip;

static struct arfreqs chip_freqs;

const char *
atheros_get_cpuname(void)
{
       return my_chip->ac_name;
}

u_int
atheros_get_chipid(void)
{
       return my_chip->ac_chipid;
}

uint32_t
atheros_get_uart_freq(void)
{
       if (chip_freqs.freq_uart)
               return chip_freqs.freq_uart;

       return chip_freqs.freq_bus;
}

uint32_t
atheros_get_bus_freq(void)
{
       return chip_freqs.freq_bus;
}

uint32_t
atheros_get_cpu_freq(void)
{
       return chip_freqs.freq_cpu;
}

uint32_t
atheros_get_mem_freq(void)
{
       return chip_freqs.freq_mem;
}

void
atheros_set_platformsw(void)
{
       const u_int cid = MIPS_PRID_CID(mips_options.mips_cpu_id);
       const u_int pid = MIPS_PRID_IMPL(mips_options.mips_cpu_id);

       for (const struct atheros_chip *ac = chips;
           ac < chips + __arraycount(chips);
           ac++) {
               const struct atheros_platformsw * const apsw = ac->ac_platformsw;
               if (cid != ac->ac_cid || pid != ac->ac_pid)
                       continue;

               const uint32_t revision_id = *(volatile uint32_t *)
                   MIPS_PHYS_TO_KSEG1(apsw->apsw_revision_id_addr);
               const uint32_t chipid = AR9344_REVISION_CHIPID(revision_id);

               if ((chipid & ac->ac_chipmask) == ac->ac_chipid) {
                       platformsw = apsw;
                       my_chip = ac;
                       atheros_early_consinit();
                       printf("Early console started!\n");
                       (*apsw->apsw_get_freqs)(&chip_freqs);
                       printf("freqs: cpu=%u bus=%u mem=%u ref=%u pll=%u\n",
                            chip_freqs.freq_cpu,
                            chip_freqs.freq_bus,
                            chip_freqs.freq_mem,
                            chip_freqs.freq_ref,
                            chip_freqs.freq_pll);
                       return;
               }
       }
       panic("%s: unrecognized platform", __func__);
}

#include "ath_arbus.h"
#if NATH_ARBUS > 0
#include <ah_soc.h>

const struct ar531x_boarddata *
atheros_get_board_info(void)
{
       const struct atheros_boardsw * const boardsw = my_chip->ac_boardsw;
       if (boardsw == NULL)
               return NULL;
       return (*boardsw->absw_get_board_info)();
}

/*
* Locate board and radio configuration data in flash.
*/
int
atheros_get_board_config(struct ar531x_config *config)
{
       const struct atheros_boardsw * const boardsw = my_chip->ac_boardsw;
       if (boardsw == NULL)
               return ENOENT;

       config->board = (*boardsw->absw_get_board_info)();
       if (config->board == NULL)
               return ENOENT;

       config->radio = (*boardsw->absw_get_radio_info)();
       if (config->radio == NULL)
               return ENOENT;          /* XXX distinct code */

       return 0;
}
#endif /* NATH_ARBUS > 0 */

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