Add ytphy(4), a driver for the MotorComm YT8511 PHY.

ok deraadt@

1 files changed, 213 insertions, 0 deletions

diff --git a/sys/dev/mii/ytphy.c b/sys/dev/mii/ytphy.c
new file mode 100644
index 00000000000..42de416888c
--- /dev/null
+++ b/sys/dev/mii/ytphy.c
@@ -0,0 +1,213 @@
+/*	$OpenBSD: ytphy.c,v 1.1 2023/03/04 22:35:28 kettenis Exp $	*/
+/*
+ * Copyright (c) 2001 Theo de Raadt
+ * Copyright (c) 2017 Mark Kettenis <kettenis@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/socket.h>
+#include <sys/errno.h>
+
+#include <net/if.h>
+#include <net/if_var.h>
+#include <net/if_media.h>
+
+#include <dev/mii/mii.h>
+#include <dev/mii/miivar.h>
+
+#define YT8511_REG_ADDR		0x1e
+#define YT8511_REG_DATA		0x1f
+
+#define YT8511_EXT_CLK_GATE		0x0c
+#define  YT8511_TX_CLK_DELAY_SEL_MASK	(0xf << 4)
+#define  YT8511_TX_CLK_DELAY_SEL_EN	(0xf << 4)
+#define  YT8511_TX_CLK_DELAY_SEL_DIS	(0x2 << 4)
+#define  YT8511_CLK_25M_SEL_MASK	(0x3 << 1)
+#define  YT8511_CLK_25M_SEL_125M	(0x3 << 1)
+#define  YT8511_RX_CLK_DELAY_EN		(1 << 0)
+#define YT8511_EXT_DELAY_DRIVE		0x0d
+#define  YT8511_TXC_DELAY_SEL_FE_MASK	(0xf << 12)
+#define  YT8511_TXC_DELAY_SEL_FE_EN	(0xf << 12)
+#define  YT8511_TXC_DELAY_SEL_FE_DIS	(0x2 << 12)
+#define YT8511_EXT_SLEEP_CTRL		0x27
+#define  YT8511_PLL_ON_IN_SLEEP		(1 << 14)
+
+int	ytphy_match(struct device *, void *, void *);
+void	ytphy_attach(struct device *, struct device *, void *);
+
+const struct cfattach ytphy_ca = {
+	sizeof(struct mii_softc), ytphy_match, ytphy_attach, mii_phy_detach
+};
+
+struct cfdriver ytphy_cd = {
+	NULL, "ytphy", DV_DULL
+};
+
+int	ytphy_service(struct mii_softc *, struct mii_data *, int);
+
+const struct mii_phy_funcs ytphy_funcs = {
+	ytphy_service, ukphy_status, mii_phy_reset,
+};
+
+int
+ytphy_match(struct device *parent, void *match, void *aux)
+{
+	struct mii_attach_args *ma = aux;
+	
+	/*
+	 * The MotorComm YT8511 has a bogus MII OUIs, so match the
+	 * complete ID including the rev.
+	 */
+	if (ma->mii_id1 == 0x0000 && ma->mii_id2 == 0x010a)
+		return (10);
+
+	return (0);
+}
+
+void
+ytphy_attach(struct device *parent, struct device *self, void *aux)
+{
+	struct mii_softc *sc = (struct mii_softc *)self;
+	struct mii_attach_args *ma = aux;
+	struct mii_data *mii = ma->mii_data;
+	uint16_t tx_clk_delay_sel;
+	uint16_t rx_clk_delay_en;
+	uint16_t txc_delay_sel_fe;
+	uint16_t addr, data;
+
+	printf(": YT8511 10/100/1000 PHY\n");
+
+	sc->mii_inst = mii->mii_instance;
+	sc->mii_phy = ma->mii_phyno;
+	sc->mii_funcs = &ytphy_funcs;
+	sc->mii_oui = MII_OUI(ma->mii_id1, ma->mii_id2);
+	sc->mii_model = MII_MODEL(ma->mii_id2);
+	sc->mii_pdata = mii;
+	sc->mii_flags = ma->mii_flags;
+
+	if (ma->mii_flags & MIIF_RXID)
+		rx_clk_delay_en = YT8511_RX_CLK_DELAY_EN;
+	else
+		rx_clk_delay_en = 0;
+
+	if (ma->mii_flags & MIIF_TXID) {
+		tx_clk_delay_sel = YT8511_TX_CLK_DELAY_SEL_EN;
+		txc_delay_sel_fe = YT8511_TXC_DELAY_SEL_FE_EN;
+	} else {
+		tx_clk_delay_sel = YT8511_TX_CLK_DELAY_SEL_DIS;
+		txc_delay_sel_fe = YT8511_TXC_DELAY_SEL_FE_DIS;
+	}
+
+	/* Save address register. */
+	addr = PHY_READ(sc, YT8511_REG_ADDR);
+
+	PHY_WRITE(sc, YT8511_REG_ADDR, YT8511_EXT_CLK_GATE);
+	data = PHY_READ(sc, YT8511_REG_DATA);
+	data &= ~YT8511_TX_CLK_DELAY_SEL_MASK;
+	data &= ~YT8511_RX_CLK_DELAY_EN;
+	data &= ~YT8511_CLK_25M_SEL_MASK;
+	data |= tx_clk_delay_sel;
+	data |= rx_clk_delay_en;
+	data |= YT8511_CLK_25M_SEL_125M;
+	PHY_WRITE(sc, YT8511_REG_DATA, data);
+
+	PHY_WRITE(sc, YT8511_REG_ADDR, YT8511_EXT_DELAY_DRIVE);
+	data = PHY_READ(sc, YT8511_REG_DATA);
+	data &= ~YT8511_TXC_DELAY_SEL_FE_MASK;
+	data |= txc_delay_sel_fe;
+	PHY_WRITE(sc, YT8511_REG_DATA, data);
+
+	PHY_WRITE(sc, YT8511_REG_ADDR, YT8511_EXT_SLEEP_CTRL);
+	data = PHY_READ(sc, YT8511_REG_DATA);
+	data |= YT8511_PLL_ON_IN_SLEEP;
+	PHY_WRITE(sc, YT8511_REG_DATA, data);
+
+	/* Restore address register. */
+	PHY_WRITE(sc, YT8511_REG_ADDR, addr);
+
+	sc->mii_capabilities =
+	    PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
+	if (sc->mii_capabilities & BMSR_EXTSTAT)
+		sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
+	if ((sc->mii_capabilities & BMSR_MEDIAMASK) ||
+	    (sc->mii_extcapabilities & EXTSR_MEDIAMASK))
+		mii_phy_add_media(sc);
+
+	PHY_RESET(sc);
+}
+
+int
+ytphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
+{
+	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
+	int reg;
+
+	if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
+		return (ENXIO);
+
+	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) {
+			reg = 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);
+}