[src/trunk]: src/sys/dev/pci Setup PCS and SGMII for SFP correctly. It still ...

[msaitoh <msaitoh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f90a44a71461
branches:  trunk
changeset: 936759:f90a44a71461
user:      msaitoh <msaitoh%NetBSD.org@localhost>
date:      Mon Aug 03 10:52:08 2020 +0000

description:
Setup PCS and SGMII for SFP correctly. It still doesn't support SFP
insertion/removal.

Copper:
wm2: SGMII(SFP)
wm2: 0x1043c440<SPI,IOH_VALID,PCIE,SGMII,NEWQUEUE,ASF_FIRM,EEE,SFP>
makphy0 at wm2 phy 6: Marvell 88E1111 Gigabit PHY, rev. 1

Fiber:
wm3: SERDES(SFP)
wm3: 0x10034440<SPI,IOH_VALID,PCIE,NEWQUEUE,ASF_FIRM,SFP>
wm3: 1000baseSX, 1000baseSX-FDX, auto

diffstat:

 sys/dev/pci/if_wm.c |  49 +++++++++++++++++++++++++++++++++++++++++++++----
 1 files changed, 45 insertions(+), 4 deletions(-)

diffs (107 lines):

diff -r 48dc54834e9e -r f90a44a71461 sys/dev/pci/if_wm.c
--- a/sys/dev/pci/if_wm.c       Mon Aug 03 07:25:59 2020 +0000
+++ b/sys/dev/pci/if_wm.c       Mon Aug 03 10:52:08 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_wm.c,v 1.682 2020/08/03 07:16:51 msaitoh Exp $      */
+/*     $NetBSD: if_wm.c,v 1.683 2020/08/03 10:52:08 msaitoh Exp $      */
 
 /*
  * Copyright (c) 2001, 2002, 2003, 2004 Wasabi Systems, Inc.
@@ -82,7 +82,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_wm.c,v 1.682 2020/08/03 07:16:51 msaitoh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_wm.c,v 1.683 2020/08/03 10:52:08 msaitoh Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_net_mpsafe.h"
@@ -139,6 +139,7 @@
 #include <dev/mii/igphyvar.h>
 #include <dev/mii/inbmphyreg.h>
 #include <dev/mii/ihphyreg.h>
+#include <dev/mii/makphyreg.h>
 
 #include <dev/pci/pcireg.h>
 #include <dev/pci/pcivar.h>
@@ -887,6 +888,7 @@
 static int     wm_write_emi_reg_locked(device_t, int, uint16_t);
 /* SGMII */
 static bool    wm_sgmii_uses_mdio(struct wm_softc *);
+static void    wm_sgmii_sfp_preconfig(struct wm_softc *);
 static int     wm_sgmii_readreg(device_t, int, int, uint16_t *);
 static int     wm_sgmii_readreg_locked(device_t, int, int, uint16_t *);
 static int     wm_sgmii_writereg(device_t, int, int, uint16_t);
@@ -10390,7 +10392,6 @@
        return phyid;
 }
 
-
 /*
  * wm_gmii_mediainit:
  *
@@ -10440,6 +10441,9 @@
        ifmedia_init_with_lock(&mii->mii_media, IFM_IMASK, wm_gmii_mediachange,
            wm_gmii_mediastatus, sc->sc_core_lock);
 
+       /* Setup internal SGMII PHY for SFP */
+       wm_sgmii_sfp_preconfig(sc);
+
        if ((sc->sc_type == WM_T_82575) || (sc->sc_type == WM_T_82576)
            || (sc->sc_type == WM_T_82580)
            || (sc->sc_type == WM_T_I350) || (sc->sc_type == WM_T_I354)
@@ -11826,6 +11830,38 @@
        return ismdio;
 }
 
+/* Setup internal SGMII PHY for SFP */
+static void
+wm_sgmii_sfp_preconfig(struct wm_softc *sc)
+{
+       uint16_t id1, id2, phyreg;
+       int i, rv;
+
+       if (((sc->sc_flags & WM_F_SGMII) == 0)
+           || ((sc->sc_flags & WM_F_SFP) == 0))
+               return;
+
+       for (i = 0; i < MII_NPHY; i++) {
+               sc->phy.no_errprint = true;
+               rv = sc->phy.readreg_locked(sc->sc_dev, i, MII_PHYIDR1, &id1);
+               if (rv != 0)
+                       continue;
+               rv = sc->phy.readreg_locked(sc->sc_dev, i, MII_PHYIDR2, &id2);
+               if (rv != 0)
+                       continue;
+               if (MII_OUI(id1, id2) != MII_OUI_xxMARVELL)
+                       continue;
+               sc->phy.no_errprint = false;
+
+               sc->phy.readreg_locked(sc->sc_dev, i, MAKPHY_ESSR, &phyreg);
+               phyreg &= ~(ESSR_SER_ANEG_BYPASS | ESSR_HWCFG_MODE);
+               phyreg |= ESSR_SGMII_WOC_COPPER;
+               sc->phy.writereg_locked(sc->sc_dev, i, MAKPHY_ESSR, phyreg);
+               break;
+       }
+
+}
+
 /*
  * wm_sgmii_readreg:   [mii interface function]
  *
@@ -12414,9 +12450,14 @@
 
        sc->sc_ctrl |= CTRL_SLU;
 
-       if ((sc->sc_type == WM_T_82575) || (sc->sc_type == WM_T_82576))
+       if ((sc->sc_type == WM_T_82575) || (sc->sc_type == WM_T_82576)) {
                sc->sc_ctrl |= CTRL_SWDPIN(0) | CTRL_SWDPIN(1);
 
+               reg = CSR_READ(sc, WMREG_CONNSW);
+               reg |= CONNSW_ENRGSRC;
+               CSR_WRITE(sc, WMREG_CONNSW, reg);
+       }
+
        pcs_lctl = CSR_READ(sc, WMREG_PCS_LCTL);
        switch (ctrl_ext & CTRL_EXT_LINK_MODE_MASK) {
        case CTRL_EXT_LINK_MODE_SGMII: