--- /dev/null
+/*-
+ * Copyright (c) 2015 The FreeBSD Foundation
+ * All rights reserved.
+ *
+ * This software was developed by Semihalf under
+ * the sponsorship of the FreeBSD Foundation.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/resource.h>
+#include <sys/rman.h>
+#include <sys/socket.h>
+#include <sys/queue.h>
+
+#include <machine/bus.h>
+#include <machine/resource.h>
+
+#include <net/if.h>
+#include <net/if_media.h>
+#include <net/if_types.h>
+#include <net/if_var.h>
+
+#include <dev/mii/mii.h>
+#include <dev/mii/miivar.h>
+
+#include "thunder_mdio_var.h"
+
+#include "lmac_if.h"
+#include "miibus_if.h"
+
+#define REG_BASE_RID 0
+
+#define SMI_CMD 0x00
+#define SMI_CMD_PHY_REG_ADR_SHIFT (0)
+#define SMI_CMD_PHY_REG_ADR_MASK (0x1FUL << SMI_CMD_PHY_REG_ADR_SHIFT)
+#define SMI_CMD_PHY_ADR_SHIFT (8)
+#define SMI_CMD_PHY_ADR_MASK (0x1FUL << SMI_CMD_PHY_ADR_SHIFT)
+#define SMI_CMD_PHY_OP_MASK (0x3UL << 16)
+#define SMI_CMD_PHY_OP_C22_READ (0x1UL << 16)
+#define SMI_CMD_PHY_OP_C22_WRITE (0x0UL << 16)
+#define SMI_CMD_PHY_OP_C45_READ (0x3UL << 16)
+#define SMI_CMD_PHY_OP_C45_WRITE (0x1UL << 16)
+#define SMI_CMD_PHY_OP_C45_ADDR (0x0UL << 16)
+
+#define SMI_WR_DAT 0x08
+#define SMI_WR_DAT_PENDING (1UL << 17)
+#define SMI_WR_DAT_VAL (1UL << 16)
+#define SMI_WR_DAT_DAT_MASK (0xFFFFUL << 0)
+
+#define SMI_RD_DAT 0x10
+#define SMI_RD_DAT_PENDING (1UL << 17)
+#define SMI_RD_DAT_VAL (1UL << 16)
+#define SMI_RD_DAT_DAT_MASK (0xFFFFUL << 0)
+
+#define SMI_CLK 0x18
+#define SMI_CLK_PREAMBLE (1UL << 12)
+#define SMI_CLK_MODE (1UL << 24)
+
+#define SMI_EN 0x20
+#define SMI_EN_EN (1UL << 0) /* Enabele interface */
+
+#define SMI_DRV_CTL 0x28
+
+static int thunder_mdio_detach(device_t);
+
+static int thunder_mdio_read(device_t, int, int);
+static int thunder_mdio_write(device_t, int, int, int);
+
+static int thunder_ifmedia_change_stub(struct ifnet *);
+static void thunder_ifmedia_status_stub(struct ifnet *, struct ifmediareq *);
+
+static int thunder_mdio_media_status(device_t, int, int *, int *, int *);
+static int thunder_mdio_media_change(device_t, int, int, int, int);
+static int thunder_mdio_phy_connect(device_t, int, int);
+static int thunder_mdio_phy_disconnect(device_t, int, int);
+
+static device_method_t thunder_mdio_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_detach, thunder_mdio_detach),
+ /* LMAC interface */
+ DEVMETHOD(lmac_media_status, thunder_mdio_media_status),
+ DEVMETHOD(lmac_media_change, thunder_mdio_media_change),
+ DEVMETHOD(lmac_phy_connect, thunder_mdio_phy_connect),
+ DEVMETHOD(lmac_phy_disconnect, thunder_mdio_phy_disconnect),
+ /* MII interface */
+ DEVMETHOD(miibus_readreg, thunder_mdio_read),
+ DEVMETHOD(miibus_writereg, thunder_mdio_write),
+
+ /* End */
+ DEVMETHOD_END
+};
+
+DEFINE_CLASS_0(thunder_mdio, thunder_mdio_driver, thunder_mdio_methods,
+ sizeof(struct thunder_mdio_softc));
+
+DRIVER_MODULE(miibus, thunder_mdio, miibus_driver, miibus_devclass, 0, 0);
+MODULE_DEPEND(thunder_mdio, ether, 1, 1, 1);
+MODULE_DEPEND(thunder_mdio, miibus, 1, 1, 1);
+
+MALLOC_DEFINE(M_THUNDER_MDIO, "ThunderX MDIO",
+ "Cavium ThunderX MDIO dynamic memory");
+
+#define MDIO_LOCK_INIT(sc, name) \
+ mtx_init(&(sc)->mtx, name, NULL, MTX_DEF)
+
+#define MDIO_LOCK_DESTROY(sc) \
+ mtx_destroy(&(sc)->mtx)
+
+#define MDIO_LOCK(sc) mtx_lock(&(sc)->mtx)
+#define MDIO_UNLOCK(sc) mtx_unlock(&(sc)->mtx)
+
+#define MDIO_LOCK_ASSERT(sc) \
+ mtx_assert(&(sc)->mtx, MA_OWNED)
+
+
+#define mdio_reg_read(sc, reg) \
+ bus_read_8((sc)->reg_base, (reg))
+
+#define mdio_reg_write(sc, reg, val) \
+ bus_write_8((sc)->reg_base, (reg), (val))
+
+int
+thunder_mdio_attach(device_t dev)
+{
+ struct thunder_mdio_softc *sc;
+ int rid;
+
+ sc = device_get_softc(dev);
+ sc->dev = dev;
+
+ /* Allocate memory resources */
+ rid = REG_BASE_RID;
+ sc->reg_base = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
+ RF_ACTIVE);
+ if (sc->reg_base == NULL) {
+ device_printf(dev, "Could not allocate memory\n");
+ return (ENXIO);
+ }
+
+ TAILQ_INIT(&sc->phy_desc_head);
+ MDIO_LOCK_INIT(sc, "ThunderX MDIO lock");
+
+ /* Enable SMI/MDIO interface */
+ mdio_reg_write(sc, SMI_EN, SMI_EN_EN);
+
+ return (0);
+}
+
+static int
+thunder_mdio_detach(device_t dev)
+{
+ struct thunder_mdio_softc *sc;
+
+ sc = device_get_softc(dev);
+
+ if (sc->reg_base != NULL) {
+ bus_release_resource(dev, SYS_RES_MEMORY, REG_BASE_RID,
+ sc->reg_base);
+ }
+
+ return (0);
+}
+
+static __inline void
+thunder_mdio_set_mode(struct thunder_mdio_softc *sc,
+ enum thunder_mdio_mode mode)
+{
+ uint64_t smi_clk;
+
+ if (sc->mode == mode)
+ return;
+
+ /* Set mode, IEEE CLAUSE 22 or IEEE CAUSE 45 */
+ smi_clk = mdio_reg_read(sc, SMI_CLK);
+ if (mode == MODE_IEEE_C22)
+ smi_clk &= ~SMI_CLK_MODE;
+ else
+ smi_clk |= SMI_CLK_MODE;
+ /* Enable sending 32 bit preable on SMI transactions */
+ smi_clk |= SMI_CLK_PREAMBLE;
+ /* Saved setings */
+ mdio_reg_write(sc, SMI_CLK, smi_clk);
+ sc->mode = mode;
+}
+
+static int
+thunder_mdio_c45_addr(struct thunder_mdio_softc *sc, int phy, int reg)
+{
+ uint64_t smi_cmd, smi_wr_dat;
+ ssize_t timeout;
+
+ thunder_mdio_set_mode(sc, MODE_IEEE_C45);
+
+ /* Prepare data for transmission */
+ mdio_reg_write(sc, SMI_WR_DAT, reg & SMI_WR_DAT_DAT_MASK);
+ /*
+ * Assemble command
+ */
+ smi_cmd = 0;
+ /* Set opcode */
+ smi_cmd |= SMI_CMD_PHY_OP_C45_WRITE;
+
+ /* Set PHY address */
+ smi_cmd |= ((phy << SMI_CMD_PHY_ADR_SHIFT) & SMI_CMD_PHY_ADR_MASK);
+ /* Set PHY register offset */
+ smi_cmd |= ((reg << SMI_CMD_PHY_REG_ADR_SHIFT) &
+ SMI_CMD_PHY_REG_ADR_MASK);
+
+ mdio_reg_write(sc, SMI_CMD, smi_cmd);
+ for (timeout = 1000; timeout > 0; timeout--) {
+ smi_wr_dat = mdio_reg_read(sc, SMI_WR_DAT);
+ if (smi_wr_dat & SMI_WR_DAT_PENDING)
+ DELAY(1000);
+ else
+ break;
+ }
+
+ if (timeout <= 0)
+ return (EIO);
+ else {
+ /* Return 0 on success */
+ return (0);
+ }
+}
+
+static int
+thunder_mdio_read(device_t dev, int phy, int reg)
+{
+ struct thunder_mdio_softc *sc;
+ uint64_t smi_cmd, smi_rd_dat;
+ ssize_t timeout;
+ int err;
+
+ sc = device_get_softc(dev);
+
+ /* XXX Always C22 - for <= 1Gbps only */
+ thunder_mdio_set_mode(sc, MODE_IEEE_C22);
+
+ /*
+ * Assemble command
+ */
+ smi_cmd = 0;
+ /* Set opcode */
+ if (sc->mode == MODE_IEEE_C22)
+ smi_cmd |= SMI_CMD_PHY_OP_C22_READ;
+ else {
+ smi_cmd |= SMI_CMD_PHY_OP_C45_READ;
+ err = thunder_mdio_c45_addr(sc, phy, reg);
+ if (err != 0)
+ return (err);
+
+ reg = (reg >> 16) & 0x1F;
+ }
+
+ /* Set PHY address */
+ smi_cmd |= ((phy << SMI_CMD_PHY_ADR_SHIFT) & SMI_CMD_PHY_ADR_MASK);
+ /* Set PHY register offset */
+ smi_cmd |= ((reg << SMI_CMD_PHY_REG_ADR_SHIFT) &
+ SMI_CMD_PHY_REG_ADR_MASK);
+
+ mdio_reg_write(sc, SMI_CMD, smi_cmd);
+ for (timeout = 1000; timeout > 0; timeout--) {
+ smi_rd_dat = mdio_reg_read(sc, SMI_RD_DAT);
+ if (smi_rd_dat & SMI_RD_DAT_PENDING)
+ DELAY(1000);
+ else
+ break;
+ }
+
+ if (smi_rd_dat & SMI_RD_DAT_VAL)
+ return (smi_rd_dat & SMI_RD_DAT_DAT_MASK);
+ else {
+ /* Return 0 on error */
+ return (0);
+ }
+}
+
+static int
+thunder_mdio_write(device_t dev, int phy, int reg, int data)
+{
+ struct thunder_mdio_softc *sc;
+ uint64_t smi_cmd, smi_wr_dat;
+ ssize_t timeout;
+
+ sc = device_get_softc(dev);
+
+ /* XXX Always C22 - for <= 1Gbps only */
+ thunder_mdio_set_mode(sc, MODE_IEEE_C22);
+
+ /* Prepare data for transmission */
+ mdio_reg_write(sc, SMI_WR_DAT, data & SMI_WR_DAT_DAT_MASK);
+ /*
+ * Assemble command
+ */
+ smi_cmd = 0;
+ /* Set opcode */
+ if (sc->mode == MODE_IEEE_C22)
+ smi_cmd |= SMI_CMD_PHY_OP_C22_WRITE;
+ else
+ smi_cmd |= SMI_CMD_PHY_OP_C45_WRITE;
+
+ /* Set PHY address */
+ smi_cmd |= ((phy << SMI_CMD_PHY_ADR_SHIFT) & SMI_CMD_PHY_ADR_MASK);
+ /* Set PHY register offset */
+ smi_cmd |= ((reg << SMI_CMD_PHY_REG_ADR_SHIFT) &
+ SMI_CMD_PHY_REG_ADR_MASK);
+
+ mdio_reg_write(sc, SMI_CMD, smi_cmd);
+ for (timeout = 1000; timeout > 0; timeout--) {
+ smi_wr_dat = mdio_reg_read(sc, SMI_WR_DAT);
+ if (smi_wr_dat & SMI_WR_DAT_PENDING)
+ DELAY(1000);
+ else
+ break;
+ }
+
+ if (timeout <= 0)
+ return (EIO);
+ else {
+ /* Return 0 on success */
+ return (0);
+ }
+}
+
+static int
+thunder_ifmedia_change_stub(struct ifnet *ifp __unused)
+{
+ /* Will never be called by if_media */
+ return (0);
+}
+
+static void
+thunder_ifmedia_status_stub(struct ifnet *ifp __unused, struct ifmediareq
+ *ifmr __unused)
+{
+ /* Will never be called by if_media */
+}
+
+static __inline struct phy_desc *
+get_phy_desc(struct thunder_mdio_softc *sc, int lmacid)
+{
+ struct phy_desc *pd = NULL;
+
+ MDIO_LOCK_ASSERT(sc);
+ TAILQ_FOREACH(pd, &sc->phy_desc_head, phy_desc_list) {
+ if (pd->lmacid == lmacid)
+ break;
+ }
+
+ return (pd);
+}
+static int
+thunder_mdio_media_status(device_t dev, int lmacid, int *link, int *duplex,
+ int *speed)
+{
+ struct thunder_mdio_softc *sc;
+ struct mii_data *mii_sc;
+ struct phy_desc *pd;
+
+ sc = device_get_softc(dev);
+
+ MDIO_LOCK(sc);
+ pd = get_phy_desc(sc, lmacid);
+ if (pd == NULL) {
+ /* Panic when invariants are enabled, fail otherwise. */
+ KASSERT(0, ("%s: no PHY descriptor for LMAC%d",
+ __func__, lmacid));
+ MDIO_UNLOCK(sc);
+ return (ENXIO);
+ }
+ mii_sc = device_get_softc(pd->miibus);
+
+ mii_tick(mii_sc);
+ if ((mii_sc->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
+ (IFM_ACTIVE | IFM_AVALID)) {
+ /* Link is up */
+ *link = 1;
+ } else
+ *link = 0;
+
+ switch (IFM_SUBTYPE(mii_sc->mii_media_active)) {
+ case IFM_10_T:
+ *speed = 10;
+ break;
+ case IFM_100_TX:
+ *speed = 100;
+ break;
+ case IFM_1000_T:
+ *speed = 1000;
+ break;
+ default:
+ /* IFM_NONE */
+ *speed = 0;
+ }
+
+ if ((IFM_OPTIONS(mii_sc->mii_media_active) & IFM_FDX) != 0)
+ *duplex = 1;
+ else
+ *duplex = 0;
+
+ MDIO_UNLOCK(sc);
+
+ return (0);
+}
+
+static int
+thunder_mdio_media_change(device_t dev, int lmacid, int link, int duplex,
+ int speed)
+{
+
+ return (EIO);
+}
+
+static int
+thunder_mdio_phy_connect(device_t dev, int lmacid, int phy)
+{
+ struct thunder_mdio_softc *sc;
+ struct phy_desc *pd;
+ int err;
+
+ sc = device_get_softc(dev);
+
+ MDIO_LOCK(sc);
+ pd = get_phy_desc(sc, lmacid);
+ MDIO_UNLOCK(sc);
+ if (pd == NULL) {
+ pd = malloc(sizeof(*pd), M_THUNDER_MDIO, (M_NOWAIT | M_ZERO));
+ if (pd == NULL)
+ return (ENOMEM);
+ pd->ifp = if_alloc(IFT_ETHER);
+ if (pd->ifp == NULL) {
+ free(pd, M_THUNDER_MDIO);
+ return (ENOMEM);
+ }
+ pd->lmacid = lmacid;
+ }
+
+ err = mii_attach(dev, &pd->miibus, pd->ifp,
+ thunder_ifmedia_change_stub, thunder_ifmedia_status_stub,
+ BMSR_DEFCAPMASK, phy, MII_OFFSET_ANY, 0);
+
+ if (err != 0) {
+ device_printf(dev, "Could not attach PHY%d\n", phy);
+ if_free(pd->ifp);
+ free(pd, M_THUNDER_MDIO);
+ return (ENXIO);
+ }
+
+ MDIO_LOCK(sc);
+ TAILQ_INSERT_TAIL(&sc->phy_desc_head, pd, phy_desc_list);
+ MDIO_UNLOCK(sc);
+
+ return (0);
+}
+
+static int
+thunder_mdio_phy_disconnect(device_t dev, int lmacid, int phy)
+{
+ struct thunder_mdio_softc *sc;
+ struct phy_desc *pd;
+
+ sc = device_get_softc(dev);
+ MDIO_LOCK(sc);
+
+ pd = get_phy_desc(sc, lmacid);
+ if (pd == NULL) {
+ MDIO_UNLOCK(sc);
+ return (EINVAL);
+ }
+
+ /* Remove this PHY descriptor from the list */
+ TAILQ_REMOVE(&sc->phy_desc_head, pd, phy_desc_list);
+
+ /* Detach miibus */
+ bus_generic_detach(dev);
+ device_delete_child(dev, pd->miibus);
+ /* Free fake ifnet */
+ if_free(pd->ifp);
+ /* Free memory under phy descriptor */
+ free(pd, M_THUNDER_MDIO);
+ MDIO_UNLOCK(sc);
+
+ return (0);
+}
--- /dev/null
+/*-
+ * Copyright (c) 2015 The FreeBSD Foundation
+ * All rights reserved.
+ *
+ * This software was developed by Semihalf under
+ * the sponsorship of the FreeBSD Foundation.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include "thunder_mdio_var.h"
+
+static int thunder_mdio_fdt_probe(device_t);
+static int thunder_mdio_fdt_attach(device_t);
+
+static device_method_t thunder_mdio_fdt_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, thunder_mdio_fdt_probe),
+ DEVMETHOD(device_attach, thunder_mdio_fdt_attach),
+
+ /* End */
+ DEVMETHOD_END
+};
+
+DEFINE_CLASS_1(thunder_mdio, thunder_mdio_fdt_driver, thunder_mdio_fdt_methods,
+ sizeof(struct thunder_mdio_softc), thunder_mdio_driver);
+
+static devclass_t thunder_mdio_fdt_devclass;
+
+DRIVER_MODULE(thunder_mdio, ofwbus, thunder_mdio_fdt_driver,
+ thunder_mdio_fdt_devclass, 0, 0);
+
+static int
+thunder_mdio_fdt_probe(device_t dev)
+{
+
+ if (ofw_bus_is_compatible(dev, "cavium,octeon-3860-mdio")) {
+ device_set_desc(dev, THUNDER_MDIO_DEVSTR);
+ return (BUS_PROBE_DEFAULT);
+ }
+
+ return (ENXIO);
+}
+
+static int
+thunder_mdio_fdt_attach(device_t dev)
+{
+ phandle_t node;
+ int ret;
+
+ /* Call core attach */
+ ret = thunder_mdio_attach(dev);
+ if (ret != 0)
+ return (ret);
+ /*
+ * Register device to this node/xref.
+ * Thanks to that we will be able to retrieve device_t structure
+ * while holding only node reference acquired from FDT.
+ */
+ node = ofw_bus_get_node(dev);
+ OF_device_register_xref(OF_xref_from_node(node), dev);
+
+ return (0);
+}
projects / people / julieng / freebsd.git / commitdiff