170 lines
4.6 KiB
C
170 lines
4.6 KiB
C
/* $NetBSD: if_enet_imx7.c,v 1.1 2016/05/17 06:44:45 ryo Exp $ */
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/*
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* Copyright (c) 2014 Ryo Shimizu <ryo@nerv.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: if_enet_imx7.c,v 1.1 2016/05/17 06:44:45 ryo Exp $");
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#include "locators.h"
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#include "imxccm.h"
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#include "imxocotp.h"
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/bus.h>
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#include <arm/imx/imx7var.h>
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#include <arm/imx/imx7reg.h>
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#include <arm/imx/imx7_ccmreg.h>
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#include <arm/imx/imx7_ccmvar.h>
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#include <arm/imx/imx7_ocotpreg.h>
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#include <arm/imx/imx7_ocotpvar.h>
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#include <arm/imx/if_enetreg.h>
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#include <arm/imx/if_enetvar.h>
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static void get_mac_from_ocotp(struct enet_softc *, device_t self,
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const char *);
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int
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enet_match(device_t parent __unused, struct cfdata *match __unused, void *aux)
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{
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struct axi_attach_args *aa;
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aa = aux;
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switch (aa->aa_addr) {
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case (IMX7_AIPS_BASE + AIPS3_ENET1_BASE):
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return 1;
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case (IMX7_AIPS_BASE + AIPS3_ENET2_BASE):
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return 1;
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}
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return 0;
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}
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void
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enet_attach(device_t parent, device_t self, void *aux)
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{
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struct enet_softc *sc;
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struct axi_attach_args *aa;
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aa = aux;
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sc = device_private(self);
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if (aa->aa_size == AXICF_SIZE_DEFAULT)
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aa->aa_size = AIPS_ENET_SIZE;
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sc->sc_imxtype = 7; /* i.MX7 */
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#if NIMXCCM > 0
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/* PLL power up */
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if (imx7_pll_power(CCM_ANALOG_PLL_ENET, 1) != 0) {
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aprint_error_dev(sc->sc_dev,
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"couldn't enable CCM_ANALOG_PLL_ENET\n");
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return;
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}
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sc->sc_pllclock = imx7_get_clock(IMX7CLK_ENET_PLL);
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#else
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sc->sc_pllclock = 1000000000;
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#endif
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switch (aa->aa_addr) {
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case (IMX7_AIPS_BASE + AIPS3_ENET1_BASE):
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sc->sc_unit = 0;
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get_mac_from_ocotp(sc, self, "enet1-ocotp-mac");
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break;
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case (IMX7_AIPS_BASE + AIPS3_ENET2_BASE):
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sc->sc_unit = 1;
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get_mac_from_ocotp(sc, self, "enet2-ocotp-mac");
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break;
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}
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enet_attach_common(self, aa->aa_iot, aa->aa_dmat, aa->aa_addr,
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aa->aa_size, aa->aa_irq);
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}
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static void
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get_mac_from_ocotp(struct enet_softc *sc, device_t self, const char *key)
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{
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#if NIMXOCOTP > 0
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char ocotp_mac[12];
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prop_dictionary_t dict;
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const char *ocotp_mac_layout;
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uint32_t eaddr;
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int i;
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#define HTOI(c) \
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((((c) >= '0') && ((c) <= '9')) ? (c) - '0' : \
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(((c) >= 'a') && ((c) <= 'f')) ? (c) - 'a' + 10: -1)
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/*
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* some board has illegal layout of macaddr in OCOTP.
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* so you can configure sequence of macaddr by device property.
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*
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* OCOTP[MAC_ADDR0]: [0][1][2][3]
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* OCOTP[MAC_ADDR1]: [4][5][6][7]
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* OCOTP[MAC_ADDR2]: [8][9][a][b]
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*
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* default layout, ENET1 macaddr is [6,7,0,1,2,3]
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* ENET2 macaddr is [8,9,a,b,4,5]
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*/
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dict = device_properties(self);
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if (!prop_dictionary_get_cstring_nocopy(dict, key, &ocotp_mac_layout)) {
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if (sc->sc_unit == 0)
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ocotp_mac_layout = "670123";
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else if (sc->sc_unit == 1)
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ocotp_mac_layout = "89ab45";
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else
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return;
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}
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eaddr = imxocotp_read(OCOTP_MAC_ADDR0);
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ocotp_mac[0] = eaddr >> 24;
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ocotp_mac[1] = eaddr >> 16;
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ocotp_mac[2] = eaddr >> 8;
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ocotp_mac[3] = eaddr;
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eaddr = imxocotp_read(OCOTP_MAC_ADDR1);
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ocotp_mac[4] = eaddr >> 24;
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ocotp_mac[5] = eaddr >> 16;
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ocotp_mac[6] = eaddr >> 8;
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ocotp_mac[7] = eaddr;
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eaddr = imxocotp_read(OCOTP_MAC_ADDR2);
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ocotp_mac[8] = eaddr >> 24;
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ocotp_mac[9] = eaddr >> 16;
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ocotp_mac[10] = eaddr >> 8;
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ocotp_mac[11] = eaddr;
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for (i = 0; i < ETHER_ADDR_LEN; i++) {
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int offs;
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offs = HTOI(ocotp_mac_layout[i]);
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KASSERT((offs >= 0) && (offs < 12));
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sc->sc_enaddr[i] = ocotp_mac[offs];
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}
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#endif
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}
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