/* $NetBSD: jh7110_eqos.c,v 1.2 2024/11/17 06:56:58 skrll Exp $ */

/*-
* Copyright (c) 2024 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Nick Hudson
*
* 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: jh7110_eqos.c,v 1.2 2024/11/17 06:56:58 skrll Exp $");

#include <sys/param.h>

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

#include <net/if_ether.h>
#include <net/if_media.h>

#include <dev/fdt/fdtvar.h>

#include <dev/mii/miivar.h>

#include <dev/ic/dwc_eqos_var.h>

#include <prop/proplib.h>

#include <riscv/starfive/jh71x0_eth.h>

struct jh7110_eqos_softc {
       struct eqos_softc       sc_eqos;
       struct jh71x0_eth_softc sc_jh71x0eth;
};

static void
jh7110_parse_phyprops(struct jh7110_eqos_softc *jh_sc, int phandle)
{
       struct eqos_softc * const sc = &jh_sc->sc_eqos;
       prop_dictionary_t dict = device_properties(sc->sc_dev);

       if (of_hasprop(phandle, "motorcomm,tx-clk-adj-enabled")) {
               prop_dictionary_set_bool(dict, "motorcomm,tx-clk-adj-enabled",
                   true);
       }
       if (of_hasprop(phandle, "motorcomm,tx-clk-100-inverted")) {
               prop_dictionary_set_bool(dict, "motorcomm,tx-clk-100-inverted",
                   true);
       }
       if (of_hasprop(phandle, "motorcomm,tx-clk-1000-inverted")) {
               prop_dictionary_set_bool(dict, "motorcomm,tx-clk-1000-inverted",
                   true);
       }

       uint32_t val;
       if (of_getprop_uint32(phandle,
           "motorcomm,rx-clk-drv-microamp", &val) == 0) {
               prop_dictionary_set_uint32(dict,
                   "motorcomm,rx-clk-drv-microamp", val);
       }
       if (of_getprop_uint32(phandle,
           "motorcomm,rx-data-drv-microamp", &val) == 0) {
               prop_dictionary_set_uint32(dict,
                   "motorcomm,rx-data-drv-microamp", val);
       }
       if (of_getprop_uint32(phandle,
           "rx-internal-delay-ps", &val) == 0) {
               prop_dictionary_set_uint32(dict,
                   "rx-internal-delay-ps", val);
       }
       if (of_getprop_uint32(phandle,
           "tx-internal-delay-ps", &val) == 0) {
               prop_dictionary_set_uint32(dict,
                   "tx-internal-delay-ps", val);
       }
}

/* Compat string(s) */
static const struct device_compatible_entry compat_data[] = {
       { .compat = "starfive,jh7110-dwmac" },
       DEVICE_COMPAT_EOL
};

static int
jh7110_eqos_match(device_t parent, cfdata_t cf, void *aux)
{
       struct fdt_attach_args * const faa = aux;

       return of_compatible_match(faa->faa_phandle, compat_data);
}

static void
jh7110_eqos_attach(device_t parent, device_t self, void *aux)
{
       struct jh7110_eqos_softc * const sc = device_private(self);
       struct jh71x0_eth_softc * const jheth_sc = &sc->sc_jh71x0eth;
       struct eqos_softc * const eqos_sc = &sc->sc_eqos;
       struct fdt_attach_args * const faa = aux;
       const int phandle = faa->faa_phandle;
       char intrstr[128];
       int error;

       sc->sc_eqos.sc_dev = self;
       sc->sc_eqos.sc_bst = faa->faa_bst;
       sc->sc_eqos.sc_dmat = faa->faa_dmat;
       sc->sc_jh71x0eth.sc_dev = self;
       sc->sc_jh71x0eth.sc_phy = MII_PHY_ANY;
       sc->sc_jh71x0eth.sc_type = JH71X0ETH_EQOS;

       error = jh71x0_eth_attach(jheth_sc, faa, &sc->sc_eqos.sc_bsh);
       if (error)
               return;

       jh7110_parse_phyprops(sc, sc->sc_jh71x0eth.sc_phandle_phy);

//      aprint_naive("\n");
//      aprint_normal(": Gigabit Ethernet Controller\n");

#define CSR_RATE_RGMII  125000000       /* default */
       eqos_sc->sc_csr_clock = CSR_RATE_RGMII;
       error = eqos_attach(eqos_sc);
       if (error)
               return;
       if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) {
               aprint_error(": failed to decode interrupt\n");
               return;
       }
       void *ih = fdtbus_intr_establish_xname(phandle, 0, IPL_NET,
           FDT_INTR_MPSAFE, eqos_intr, eqos_sc, device_xname(self));
       if (ih == NULL) {
               aprint_error_dev(self, "failed to establish interrupt on %s\n",
                   intrstr);
               // XXXNH unwind
               return;
       }
       aprint_normal_dev(self, "interrupting on %s\n", intrstr);
}

CFATTACH_DECL_NEW(jh7110_eqos, sizeof(struct jh7110_eqos_softc),
   jh7110_eqos_match, jh7110_eqos_attach, NULL, NULL);

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