diff options
Diffstat (limited to 'sys/dev/cadence/if_cgem.c')
| -rw-r--r-- | sys/dev/cadence/if_cgem.c | 104 |
1 files changed, 71 insertions, 33 deletions
diff --git a/sys/dev/cadence/if_cgem.c b/sys/dev/cadence/if_cgem.c index 18a3ecc6c1c7..593478a6db8e 100644 --- a/sys/dev/cadence/if_cgem.c +++ b/sys/dev/cadence/if_cgem.c @@ -1,5 +1,5 @@ /*- - * Copyright (c) 2012-2013 Thomas Skibo + * Copyright (c) 2012-2014 Thomas Skibo * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -108,6 +108,7 @@ struct cgem_softc { void *intrhand; struct callout tick_ch; uint32_t net_ctl_shadow; + int ref_clk_num; u_char eaddr[6]; bus_dma_tag_t desc_dma_tag; @@ -149,6 +150,9 @@ struct cgem_softc { #define CGEM_LOCK_DESTROY(sc) mtx_destroy(&(sc)->sc_mtx) #define CGEM_ASSERT_LOCKED(sc) mtx_assert(&(sc)->sc_mtx, MA_OWNED) +/* Allow platforms to optionally provide a way to set the reference clock. */ +int cgem_set_ref_clk(int unit, int frequency); + static devclass_t cgem_devclass; static int cgem_probe(device_t dev); @@ -707,47 +711,18 @@ cgem_start(struct ifnet *ifp) CGEM_UNLOCK(sc); } -/* Respond to changes in media. */ -static void -cgem_media_update(struct cgem_softc *sc, int active) -{ - uint32_t net_cfg; - - CGEM_ASSERT_LOCKED(sc); - - /* Update hardware to reflect phy status. */ - net_cfg = RD4(sc, CGEM_NET_CFG); - net_cfg &= ~(CGEM_NET_CFG_SPEED100 | CGEM_NET_CFG_GIGE_EN | - CGEM_NET_CFG_FULL_DUPLEX); - - if (IFM_SUBTYPE(active) == IFM_1000_T) - net_cfg |= (CGEM_NET_CFG_SPEED100 | CGEM_NET_CFG_GIGE_EN); - else if (IFM_SUBTYPE(active) == IFM_100_TX) - net_cfg |= CGEM_NET_CFG_SPEED100; - - if ((active & IFM_FDX) != 0) - net_cfg |= CGEM_NET_CFG_FULL_DUPLEX; - WR4(sc, CGEM_NET_CFG, net_cfg); -} - static void cgem_tick(void *arg) { struct cgem_softc *sc = (struct cgem_softc *)arg; struct mii_data *mii; - int active; CGEM_ASSERT_LOCKED(sc); /* Poll the phy. */ if (sc->miibus != NULL) { mii = device_get_softc(sc->miibus); - active = mii->mii_media_active; mii_tick(mii); - if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) == - (IFM_ACTIVE | IFM_AVALID) && - active != mii->mii_media_active) - cgem_media_update(sc, mii->mii_media_active); } /* Next callout in one second. */ @@ -894,7 +869,6 @@ cgem_init_locked(struct cgem_softc *sc) mii = device_get_softc(sc->miibus); mii_pollstat(mii); - cgem_media_update(sc, mii->mii_media_active); cgem_start_locked(sc->ifp); callout_reset(&sc->tick_ch, hz, cgem_tick, sc); @@ -1073,12 +1047,13 @@ cgem_ifmedia_upd(struct ifnet *ifp) { struct cgem_softc *sc = (struct cgem_softc *) ifp->if_softc; struct mii_data *mii; + int error; mii = device_get_softc(sc->miibus); CGEM_LOCK(sc); - mii_mediachg(mii); + error = mii_mediachg(mii); CGEM_UNLOCK(sc); - return (0); + return (error); } static void @@ -1148,6 +1123,60 @@ cgem_miibus_writereg(device_t dev, int phy, int reg, int data) return (0); } +/* + * Overridable weak symbol cgem_set_ref_clk(). This allows platforms to + * provide a function to set the cgem's reference clock. + */ +static int __used +cgem_default_set_ref_clk(int unit, int frequency) +{ + + return 0; +} +__weak_reference(cgem_default_set_ref_clk, cgem_set_ref_clk); + +static void +cgem_miibus_statchg(device_t dev) +{ + struct cgem_softc *sc; + struct mii_data *mii; + uint32_t net_cfg; + int ref_clk_freq; + + sc = device_get_softc(dev); + + mii = device_get_softc(sc->miibus); + + if ((mii->mii_media_status & IFM_AVALID) != 0) { + /* Update hardware to reflect phy status. */ + net_cfg = RD4(sc, CGEM_NET_CFG); + net_cfg &= ~(CGEM_NET_CFG_SPEED100 | CGEM_NET_CFG_GIGE_EN | + CGEM_NET_CFG_FULL_DUPLEX); + + switch (IFM_SUBTYPE(mii->mii_media_active)) { + case IFM_1000_T: + net_cfg |= (CGEM_NET_CFG_SPEED100 | + CGEM_NET_CFG_GIGE_EN); + ref_clk_freq = 125000000; + break; + case IFM_100_TX: + net_cfg |= CGEM_NET_CFG_SPEED100; + ref_clk_freq = 25000000; + break; + default: + ref_clk_freq = 2500000; + } + + if ((mii->mii_media_active & IFM_FDX) != 0) + net_cfg |= CGEM_NET_CFG_FULL_DUPLEX; + WR4(sc, CGEM_NET_CFG, net_cfg); + + /* Set the reference clock if necessary. */ + if (cgem_set_ref_clk(sc->ref_clk_num, ref_clk_freq)) + device_printf(dev, "could not set ref clk%d to %d.\n", + sc->ref_clk_num, ref_clk_freq); + } +} static int cgem_probe(device_t dev) @@ -1165,12 +1194,20 @@ cgem_attach(device_t dev) { struct cgem_softc *sc = device_get_softc(dev); struct ifnet *ifp = NULL; + phandle_t node; + pcell_t cell; int rid, err; u_char eaddr[ETHER_ADDR_LEN]; sc->dev = dev; CGEM_LOCK_INIT(sc); + /* Get reference clock number and base divider from fdt. */ + node = ofw_bus_get_node(dev); + sc->ref_clk_num = 0; + if (OF_getprop(node, "ref-clock-num", &cell, sizeof(cell)) > 0) + sc->ref_clk_num = fdt32_to_cpu(cell); + /* Get memory resource. */ rid = 0; sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, @@ -1372,6 +1409,7 @@ static device_method_t cgem_methods[] = { /* MII interface */ DEVMETHOD(miibus_readreg, cgem_miibus_readreg), DEVMETHOD(miibus_writereg, cgem_miibus_writereg), + DEVMETHOD(miibus_statchg, cgem_miibus_statchg), DEVMETHOD_END }; |