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[src/trunk]: src/sys/arch Add support for Meson GXL internal PHY.
details: https://anonhg.NetBSD.org/src/rev/aa0631dc4bde
branches: trunk
changeset: 456059:aa0631dc4bde
user: jmcneill <jmcneill%NetBSD.org@localhost>
date: Sun Apr 21 11:02:32 2019 +0000
description:
Add support for Meson GXL internal PHY.
diffstat:
sys/arch/arm/amlogic/files.meson | 7 +-
sys/arch/arm/amlogic/gxlphy.c | 276 +++++++++++++++++++++++++++++++++++++++
sys/arch/evbarm/conf/GENERIC64 | 3 +-
3 files changed, 284 insertions(+), 2 deletions(-)
diffs (truncated from 319 to 300 lines):
diff -r d8da29234893 -r aa0631dc4bde sys/arch/arm/amlogic/files.meson
--- a/sys/arch/arm/amlogic/files.meson Sun Apr 21 07:50:59 2019 +0000
+++ b/sys/arch/arm/amlogic/files.meson Sun Apr 21 11:02:32 2019 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: files.meson,v 1.7 2019/04/19 19:07:56 jmcneill Exp $
+# $NetBSD: files.meson,v 1.8 2019/04/21 11:02:32 jmcneill Exp $
#
# Configuration info for Amlogic Meson family SoCs
#
@@ -99,6 +99,11 @@
attach awge at fdt with meson_dwmac
file arch/arm/amlogic/meson_dwmac.c meson_dwmac
+# Meson GXL internal PHY
+device gxlphy: mii_phy
+attach gxlphy at mii
+file arch/arm/amlogic/gxlphy.c gxlphy
+
# Watchdog
device mesonwdt: sysmon_wdog
attach mesonwdt at fdt with meson_wdt
diff -r d8da29234893 -r aa0631dc4bde sys/arch/arm/amlogic/gxlphy.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/arm/amlogic/gxlphy.c Sun Apr 21 11:02:32 2019 +0000
@@ -0,0 +1,276 @@
+/* $NetBSD: gxlphy.c,v 1.1 2019/04/21 11:02:32 jmcneill Exp $ */
+
+/*
+ * Copyright (c) 2019 Jared McNeill <jmcneill%invisible.ca@localhost>
+ * 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 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.
+ */
+
+/*
+ * Amlogic Meson GXL 10/100 internal PHY
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: gxlphy.c,v 1.1 2019/04/21 11:02:32 jmcneill Exp $");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/device.h>
+#include <sys/socket.h>
+#include <sys/errno.h>
+
+#include <net/if.h>
+#include <net/if_media.h>
+
+#include <dev/mii/mii.h>
+#include <dev/mii/miivar.h>
+#include <dev/mii/miidevs.h>
+
+#define TSTCNTL 20
+#define TSTCNTL_READ __BIT(15)
+#define TSTCNTL_WRITE __BIT(14)
+#define TSTCNTL_REG_BANK_SEL __BITS(12,11)
+#define TSTCNTL_TEST_MODE __BIT(10)
+#define TSTCNTL_READ_ADDR __BITS(9,5)
+#define TSTCNTL_WRITE_ADDR __BITS(4,0)
+#define TSTREAD1 21
+#define TSTWRITE 23
+
+#define BANK_WOL 1
+#define BANK_BIST 3
+
+#define LPI_STATUS 0x0c
+#define LPI_STATUS_RSV12 __BIT(12)
+
+#define BIST_PLL_CTRL 0x1b
+#define BIST_PLL_DIV0 0x1c
+#define BIST_PLL_DIV1 0x1d
+
+static int gxlphymatch(device_t, cfdata_t, void *);
+static void gxlphyattach(device_t, device_t, void *);
+
+CFATTACH_DECL3_NEW(gxlphy, sizeof(struct mii_softc),
+ gxlphymatch, gxlphyattach, mii_phy_detach, mii_phy_activate, NULL, NULL,
+ DVF_DETACH_SHUTDOWN);
+
+static int gxlphy_service(struct mii_softc *, struct mii_data *, int);
+static void gxlphy_status(struct mii_softc *);
+
+static const struct mii_phy_funcs gxlphy_funcs = {
+ gxlphy_service, gxlphy_status, mii_phy_reset,
+};
+
+static const struct mii_phydesc gxlphys[] = {
+ MII_PHY_DESC(xxAMLOGIC, GXL),
+ MII_PHY_END,
+};
+
+static void
+gxl_openbanks(struct mii_softc *sc)
+{
+ PHY_WRITE(sc, TSTCNTL, 0);
+ PHY_WRITE(sc, TSTCNTL, TSTCNTL_TEST_MODE);
+ PHY_WRITE(sc, TSTCNTL, 0);
+ PHY_WRITE(sc, TSTCNTL, TSTCNTL_TEST_MODE);
+}
+
+static void
+gxl_closebanks(struct mii_softc *sc)
+{
+ PHY_WRITE(sc, TSTCNTL, 0);
+}
+
+static uint16_t
+gxl_readreg(struct mii_softc *sc, u_int bank, u_int reg)
+{
+ uint16_t val;
+
+ gxl_openbanks(sc);
+ PHY_WRITE(sc, TSTCNTL,
+ TSTCNTL_READ | TSTCNTL_TEST_MODE |
+ __SHIFTIN(bank, TSTCNTL_REG_BANK_SEL) |
+ __SHIFTIN(reg, TSTCNTL_READ_ADDR));
+ PHY_READ(sc, TSTREAD1, &val);
+ gxl_closebanks(sc);
+
+ return val;
+}
+
+static void
+gxl_writereg(struct mii_softc *sc, u_int bank, u_int reg, uint16_t val)
+{
+ gxl_openbanks(sc);
+ PHY_WRITE(sc, TSTWRITE, val);
+ PHY_WRITE(sc, TSTCNTL,
+ TSTCNTL_WRITE | TSTCNTL_TEST_MODE |
+ __SHIFTIN(bank, TSTCNTL_REG_BANK_SEL) |
+ __SHIFTIN(reg, TSTCNTL_WRITE_ADDR));
+ gxl_closebanks(sc);
+}
+
+static int
+gxlphymatch(device_t parent, cfdata_t match, void *aux)
+{
+ struct mii_attach_args *ma = aux;
+
+ if (mii_phy_match(ma, gxlphys) != NULL)
+ return 20;
+
+ return 0;
+}
+
+static void
+gxlphyattach(device_t parent, device_t self, void *aux)
+{
+ struct mii_softc *sc = device_private(self);
+ struct mii_attach_args *ma = aux;
+ struct mii_data *mii = ma->mii_data;
+ int oui = MII_OUI(ma->mii_id1, ma->mii_id2);
+ int model = MII_MODEL(ma->mii_id2);
+ int rev = MII_REV(ma->mii_id2);
+ const char *descr;
+
+ if ((descr = mii_get_descr(oui, model)) != NULL)
+ aprint_normal(": %s (OUI 0x%06x, model 0x%04x), rev. %d\n",
+ descr, oui, model, rev);
+ else
+ aprint_normal(": OUI 0x%06x, model 0x%04x, rev. %d\n",
+ oui, model, rev);
+ aprint_naive(": Media interface\n");
+
+ sc->mii_dev = self;
+ sc->mii_inst = mii->mii_instance;
+ sc->mii_phy = ma->mii_phyno;
+ sc->mii_mpd_oui = MII_OUI(ma->mii_id1, ma->mii_id2);
+ sc->mii_mpd_model = MII_MODEL(ma->mii_id2);
+ sc->mii_mpd_rev = MII_REV(ma->mii_id2);
+ sc->mii_funcs = &gxlphy_funcs;
+ sc->mii_pdata = mii;
+ sc->mii_flags = ma->mii_flags;
+ sc->mii_anegticks = MII_ANEGTICKS;
+
+ PHY_RESET(sc);
+
+ gxl_writereg(sc, BANK_BIST, BIST_PLL_CTRL, 0x5);
+ gxl_writereg(sc, BANK_BIST, BIST_PLL_DIV1, 0x029a);
+ gxl_writereg(sc, BANK_BIST, BIST_PLL_DIV0, 0xaaaa);
+
+ PHY_READ(sc, MII_BMSR, &sc->mii_capabilities);
+ sc->mii_capabilities &= ma->mii_capmask;
+ if (sc->mii_capabilities & BMSR_EXTSTAT)
+ PHY_READ(sc, MII_EXTSR, &sc->mii_extcapabilities);
+ aprint_normal_dev(self, "");
+ if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
+ (sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
+ aprint_error("no media present");
+ else
+ mii_phy_add_media(sc);
+ aprint_normal("\n");
+}
+
+static int
+gxlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
+{
+ struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
+ uint16_t reg;
+
+ switch (cmd) {
+ case MII_POLLSTAT:
+ /* If we're not polling our PHY instance, just return. */
+ if (IFM_INST(ife->ifm_media) != sc->mii_inst)
+ return 0;
+ break;
+
+ case MII_MEDIACHG:
+ /*
+ * If the media indicates a different PHY instance,
+ * isolate ourselves.
+ */
+ if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
+ PHY_READ(sc, MII_BMCR, ®);
+ PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
+ return 0;
+ }
+
+ /* If the interface is not up, don't do anything. */
+ if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
+ break;
+
+ mii_phy_setmedia(sc);
+ break;
+
+ case MII_TICK:
+ /* If we're not currently selected, just return. */
+ if (IFM_INST(ife->ifm_media) != sc->mii_inst)
+ return 0;
+
+ if (mii_phy_tick(sc) == EJUSTRETURN)
+ return 0;
+ break;
+
+ case MII_DOWN:
+ mii_phy_down(sc);
+ return 0;
+ }
+
+ /* Update the media status. */
+ mii_phy_status(sc);
+
+ /* Callback if something changed. */
+ mii_phy_update(sc, cmd);
+ return 0;
+}
+
+static void
+gxlphy_status(struct mii_softc *sc)
+{
+ uint16_t bmcr, bmsr, wol, lpa, aner;
+
+ PHY_READ(sc, MII_BMCR, &bmcr);
+ if ((bmcr & BMCR_AUTOEN) == 0)
+ goto done;
+
+ PHY_READ(sc, MII_BMSR, &bmsr);
+ if ((bmsr & BMSR_ACOMP) == 0)
+ goto done;
+
+ wol = gxl_readreg(sc, BANK_WOL, LPI_STATUS);
+ PHY_READ(sc, MII_ANLPAR, &lpa);
+ PHY_READ(sc, MII_ANER, &aner);
+
+ if ((wol & LPI_STATUS_RSV12) == 0 ||
+ ((aner & ANER_LPAN) != 0 && (lpa & ANLPAR_ACK) == 0)) {
+ device_printf(sc->mii_dev, "LPA corruption - aneg restart\n");
+
+ bmcr &= ~BMCR_ISO;
+ bmcr |= BMCR_AUTOEN;
+ bmcr |= BMCR_STARTNEG;
+ PHY_WRITE(sc, MII_BMCR, bmcr);
+
+ return;
+ }
+
+done:
+ ukphy_status(sc);
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