Determine PHY mode and pass the appropriate flags down to the PHY when we

attach it.

ok dlg@

3 files changed, 44 insertions, 4 deletions

diff --git a/sys/dev/fdt/if_dwqe_fdt.c b/sys/dev/fdt/if_dwqe_fdt.c
index b4a66dead99..5bc5b321240 100644
--- a/sys/dev/fdt/if_dwqe_fdt.c
+++ b/sys/dev/fdt/if_dwqe_fdt.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_dwqe_fdt.c,v 1.7 2023/04/07 06:33:49 dlg Exp $	*/
+/*	$OpenBSD: if_dwqe_fdt.c,v 1.8 2023/04/07 08:53:03 kettenis Exp $	*/
 /*
  * Copyright (c) 2008, 2019 Mark Kettenis <kettenis@openbsd.org>
  * Copyright (c) 2017, 2022 Patrick Wildt <patrick@blueri.se>
@@ -86,6 +86,7 @@ dwqe_fdt_attach(struct device *parent, struct device *self, void *aux)
 {
 	struct dwqe_softc *sc = (void *)self;
 	struct fdt_attach_args *faa = aux;
+	char phy_mode[16] = { 0 };
 	uint32_t phy, phy_supply;
 	uint32_t axi_config;
 	struct ifnet *ifp;
@@ -113,6 +114,18 @@ dwqe_fdt_attach(struct device *parent, struct device *self, void *aux)
 		return;
 	}
 
+	OF_getprop(faa->fa_node, "phy-mode", phy_mode, sizeof(phy_mode));
+	if (strcmp(phy_mode, "rgmii") == 0)
+		sc->sc_phy_mode = DWQE_PHY_MODE_RGMII;
+	else if (strcmp(phy_mode, "rgmii-rxid") == 0)
+		sc->sc_phy_mode = DWQE_PHY_MODE_RGMII_RXID;
+	else if (strcmp(phy_mode, "rgmii-txid") == 0)
+		sc->sc_phy_mode = DWQE_PHY_MODE_RGMII_TXID;
+	else if (strcmp(phy_mode, "rgmii-id") == 0)
+		sc->sc_phy_mode = DWQE_PHY_MODE_RGMII_ID;
+	else
+		sc->sc_phy_mode = DWQE_PHY_MODE_UNKNOWN;
+
 	/* Lookup PHY. */
 	phy = OF_getpropint(faa->fa_node, "phy", 0);
 	if (phy == 0)
diff --git a/sys/dev/ic/dwqe.c b/sys/dev/ic/dwqe.c
index 1f94791e465..bcc8b191194 100644
--- a/sys/dev/ic/dwqe.c
+++ b/sys/dev/ic/dwqe.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: dwqe.c,v 1.3 2023/03/22 21:41:28 jsg Exp $	*/
+/*	$OpenBSD: dwqe.c,v 1.4 2023/04/07 08:53:03 kettenis Exp $	*/
 /*
  * Copyright (c) 2008, 2019 Mark Kettenis <kettenis@openbsd.org>
  * Copyright (c) 2017, 2022 Patrick Wildt <patrick@blueri.se>
@@ -106,6 +106,7 @@ dwqe_attach(struct dwqe_softc *sc)
 {
 	struct ifnet *ifp;
 	uint32_t version, mode;
+	int mii_flags = 0;
 	int i;
 
 	version = dwqe_read(sc, GMAC_VERSION);
@@ -212,8 +213,25 @@ dwqe_attach(struct dwqe_softc *sc)
 		dwqe_write(sc, GMAC_SYS_BUS_MODE, mode);
 	}
 
+	switch (sc->sc_phy_mode) {
+	case DWQE_PHY_MODE_RGMII:
+		mii_flags |= MIIF_SETDELAY;
+		break;
+	case DWQE_PHY_MODE_RGMII_ID:
+		mii_flags |= MIIF_SETDELAY | MIIF_RXID | MIIF_TXID;
+		break;
+	case DWQE_PHY_MODE_RGMII_RXID:
+		mii_flags |= MIIF_SETDELAY | MIIF_RXID;
+		break;
+	case DWQE_PHY_MODE_RGMII_TXID:
+		mii_flags |= MIIF_SETDELAY | MIIF_TXID;
+		break;
+	default:
+		break;
+	}
+
 	mii_attach(&sc->sc_dev, &sc->sc_mii, 0xffffffff, sc->sc_phyloc,
-	    (sc->sc_phyloc == MII_PHY_ANY) ? 0 : MII_OFFSET_ANY, 0);
+	    (sc->sc_phyloc == MII_PHY_ANY) ? 0 : MII_OFFSET_ANY, mii_flags);
 	if (LIST_FIRST(&sc->sc_mii.mii_phys) == NULL) {
 		printf("%s: no PHY found!\n", sc->sc_dev.dv_xname);
 		ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_MANUAL, 0, NULL);
diff --git a/sys/dev/ic/dwqevar.h b/sys/dev/ic/dwqevar.h
index bb47dd688d6..060f61d2ac4 100644
--- a/sys/dev/ic/dwqevar.h
+++ b/sys/dev/ic/dwqevar.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: dwqevar.h,v 1.2 2023/03/19 09:46:40 kettenis Exp $	*/
+/*	$OpenBSD: dwqevar.h,v 1.3 2023/04/07 08:53:03 kettenis Exp $	*/
 /*
  * Copyright (c) 2008, 2019 Mark Kettenis <kettenis@openbsd.org>
  * Copyright (c) 2017, 2022 Patrick Wildt <patrick@blueri.se>
@@ -16,6 +16,14 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+enum dwqe_phy_mode {
+	DWQE_PHY_MODE_UNKNOWN,
+	DWQE_PHY_MODE_RGMII,
+	DWQE_PHY_MODE_RGMII_ID,
+	DWQE_PHY_MODE_RGMII_TXID,
+	DWQE_PHY_MODE_RGMII_RXID,
+};
+
 struct dwqe_buf {
 	bus_dmamap_t	tb_map;
 	struct mbuf	*tb_m;
@@ -51,6 +59,7 @@ struct dwqe_softc {
 #define sc_media	sc_mii.mii_media
 	int			sc_link;
 	int			sc_phyloc;
+	enum dwqe_phy_mode	sc_phy_mode;
 
 	struct dwqe_dmamem	*sc_txring;
 	struct dwqe_buf		*sc_txbuf;