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/* $NetBSD: genet_fdt.c,v 1.6 2021/05/03 10:28:26 rin Exp $ */
/*-
* Copyright (c) 2020 Jared McNeill <jmcneill@invisible.ca>
* 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 AUTHOR ``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 AUTHOR 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 "opt_net_mpsafe.h"
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: genet_fdt.c,v 1.6 2021/05/03 10:28:26 rin Exp $");
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/device.h>
#include <sys/intr.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/rndsource.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_ether.h>
#include <net/if_media.h>
#include <dev/mii/miivar.h>
#include <dev/ic/bcmgenetvar.h>
#include <dev/fdt/fdtvar.h>
#ifdef NET_MPSAFE
#define FDT_INTR_FLAGS FDT_INTR_MPSAFE
#else
#define FDT_INTR_FLAGS 0
#endif
static int genet_fdt_match(device_t, cfdata_t, void *);
static void genet_fdt_attach(device_t, device_t, void *);
CFATTACH_DECL_NEW(genet_fdt, sizeof(struct genet_softc),
genet_fdt_match, genet_fdt_attach, NULL, NULL);
static const struct device_compatible_entry compat_data[] = {
{ .compat = "brcm,bcm2711-genet-v5" },
DEVICE_COMPAT_EOL
};
static int
genet_fdt_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
genet_fdt_attach(device_t parent, device_t self, void *aux)
{
struct genet_softc * const sc = device_private(self);
struct fdt_attach_args * const faa = aux;
const int phandle = faa->faa_phandle;
char intrstr[128];
bus_addr_t addr;
bus_size_t size;
void *ih;
if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) {
aprint_error(": couldn't get registers\n");
return;
}
sc->sc_dev = self;
sc->sc_bst = faa->faa_bst;
if (bus_space_map(sc->sc_bst, addr, size, 0, &sc->sc_bsh) != 0) {
aprint_error(": couldn't map registers\n");
return;
}
sc->sc_dmat = faa->faa_dmat;
sc->sc_phy_id = MII_PHY_ANY;
const char *phy_mode = fdtbus_get_string(phandle, "phy-mode");
if (phy_mode == NULL) {
aprint_error(": missing 'phy-mode' property\n");
return;
}
if (strcmp(phy_mode, "rgmii-rxid") == 0)
sc->sc_phy_mode = GENET_PHY_MODE_RGMII_RXID;
else if (strcmp(phy_mode, "rgmii-txid") == 0)
sc->sc_phy_mode = GENET_PHY_MODE_RGMII_TXID;
else if (strcmp(phy_mode, "rgmii-id") == 0)
sc->sc_phy_mode = GENET_PHY_MODE_RGMII_ID;
else if (strcmp(phy_mode, "rgmii") == 0)
sc->sc_phy_mode = GENET_PHY_MODE_RGMII;
else {
aprint_error(": unsupported phy-mode '%s'\n", phy_mode);
return;
}
if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) {
aprint_error(": failed to decode interrupt\n");
return;
}
if (genet_attach(sc) != 0)
return;
ih = fdtbus_intr_establish_xname(phandle, 0, IPL_NET, FDT_INTR_MPSAFE,
genet_intr, sc, device_xname(self));
if (ih == NULL) {
aprint_error_dev(self, "couldn't establish interrupt on %s\n",
intrstr);
return;
}
aprint_normal_dev(self, "interrupting on %s\n", intrstr);
}
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