[Midnightbsd-cvs] src [9381] trunk/sys/dev/mii: For RTL8211B or later PHYs, enable crossover detection and

[laffer1 at midnightbsd.org]

Revision: 9381
          http://svnweb.midnightbsd.org/src/?rev=9381
Author:   laffer1
Date:     2017-03-04 15:35:26 -0500 (Sat, 04 Mar 2017)
Log Message:
-----------
For RTL8211B or later PHYs, enable crossover detection and
  auto-correction. This change makes re(4) establish a link with
  a system using non-crossover UTP cable.

Modified Paths:
--------------
    trunk/sys/dev/mii/rgephy.c
    trunk/sys/dev/mii/rgephyreg.h

Modified: trunk/sys/dev/mii/rgephy.c
===================================================================
--- trunk/sys/dev/mii/rgephy.c	2017-03-04 20:34:47 UTC (rev 9380)
+++ trunk/sys/dev/mii/rgephy.c	2017-03-04 20:35:26 UTC (rev 9381)
@@ -488,7 +488,7 @@
 static void
 rgephy_reset(struct mii_softc *sc)
 {
-	uint16_t ssr;
+	uint16_t pcr, ssr;
 
 	if ((sc->mii_flags & MIIF_PHYPRIV0) == 0 && sc->mii_mpd_rev == 3) {
 		/* RTL8211C(L) */
@@ -499,6 +499,15 @@
 		}
 	}
 
+	if (sc->mii_mpd_rev >= 2) {
+		pcr = PHY_READ(sc, RGEPHY_MII_PCR);
+		if ((pcr & RGEPHY_PCR_MDIX_AUTO) == 0) {
+			pcr &= ~RGEPHY_PCR_MDI_MASK;
+			pcr |= RGEPHY_PCR_MDIX_AUTO;
+			PHY_WRITE(sc, RGEPHY_MII_PCR, pcr);
+		}
+	}
+
 	mii_phy_reset(sc);
 	DELAY(1000);
 	rgephy_load_dspcode(sc);

Modified: trunk/sys/dev/mii/rgephyreg.h
===================================================================
--- trunk/sys/dev/mii/rgephyreg.h	2017-03-04 20:34:47 UTC (rev 9380)
+++ trunk/sys/dev/mii/rgephyreg.h	2017-03-04 20:35:26 UTC (rev 9381)
@@ -138,6 +138,17 @@
 #define RGEPHY_EXTSTS_T_HD_CAP	0x1000	/* 1000base-T HD capable */
 
 /* RTL8211B(L)/RTL8211C(L) */
+#define RGEPHY_MII_PCR		0x10	/* PHY Specific control register */
+#define RGEPHY_PCR_ASSERT_CRS	0x0800
+#define RGEPHY_PCR_FORCE_LINK	0x0400
+#define RGEPHY_PCR_MDI_MASK	0x0060
+#define RGEPHY_PCR_MDIX_AUTO	0x0040
+#define RGEPHY_PCR_MDIX_MANUAL	0x0020
+#define RGEPHY_PCR_MDI_MANUAL	0x0000
+#define RGEPHY_PCR_CLK125_DIS	0x0010
+#define RGEPHY_PCR_JABBER_DIS	0x0001
+
+/* RTL8211B(L)/RTL8211C(L) */
 #define RGEPHY_MII_SSR		0x11	/* PHY Specific status register */
 #define	RGEPHY_SSR_S1000	0x8000	/* 1000Mbps */
 #define	RGEPHY_SSR_S100		0x4000	/* 100Mbps */