[710d2a1] | 1 | #include <machine/rtems-bsd-kernel-space.h> |
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| 2 | |
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| 3 | /*- |
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| 4 | * Copyright (c) 2014 Ruslan Bukin <br@bsdpad.com> |
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| 5 | * All rights reserved. |
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| 6 | * |
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| 7 | * This software was developed by SRI International and the University of |
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| 8 | * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) |
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| 9 | * ("CTSRD"), as part of the DARPA CRASH research programme. |
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| 10 | * |
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| 11 | * Redistribution and use in source and binary forms, with or without |
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| 12 | * modification, are permitted provided that the following conditions |
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| 13 | * are met: |
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| 14 | * 1. Redistributions of source code must retain the above copyright |
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| 15 | * notice, this list of conditions and the following disclaimer. |
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| 16 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 17 | * notice, this list of conditions and the following disclaimer in the |
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| 18 | * documentation and/or other materials provided with the distribution. |
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| 19 | * |
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| 20 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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| 21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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| 24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 30 | * SUCH DAMAGE. |
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| 31 | */ |
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| 32 | |
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| 33 | #include <sys/cdefs.h> |
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| 34 | __FBSDID("$FreeBSD$"); |
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| 35 | |
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| 36 | /* |
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| 37 | * Micrel KSZ9021 Gigabit Ethernet Transceiver |
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| 38 | */ |
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| 39 | |
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| 40 | #include <rtems/bsd/sys/param.h> |
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| 41 | #include <sys/systm.h> |
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| 42 | #include <sys/kernel.h> |
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| 43 | #include <sys/socket.h> |
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| 44 | #include <sys/errno.h> |
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| 45 | #include <sys/module.h> |
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| 46 | #include <sys/bus.h> |
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| 47 | #include <sys/malloc.h> |
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| 48 | |
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| 49 | #include <machine/bus.h> |
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| 50 | |
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| 51 | #include <net/if.h> |
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| 52 | #include <net/if_media.h> |
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| 53 | |
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| 54 | #include <dev/mii/mii.h> |
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| 55 | #include <dev/mii/miivar.h> |
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| 56 | #include <rtems/bsd/local/miidevs.h> |
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| 57 | |
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| 58 | #include <rtems/bsd/local/miibus_if.h> |
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| 59 | |
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| 60 | #ifndef __rtems__ |
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| 61 | #include <dev/fdt/fdt_common.h> |
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| 62 | #include <dev/ofw/openfirm.h> |
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| 63 | #include <dev/ofw/ofw_bus.h> |
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| 64 | #include <dev/ofw/ofw_bus_subr.h> |
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| 65 | #endif /* __rtems__ */ |
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| 66 | |
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| 67 | #define MII_KSZPHY_EXTREG 0x0b |
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| 68 | #define KSZPHY_EXTREG_WRITE (1 << 15) |
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| 69 | #define MII_KSZPHY_EXTREG_WRITE 0x0c |
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| 70 | #define MII_KSZPHY_EXTREG_READ 0x0d |
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| 71 | #define MII_KSZPHY_CLK_CONTROL_PAD_SKEW 0x104 |
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| 72 | #define MII_KSZPHY_RX_DATA_PAD_SKEW 0x105 |
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| 73 | #define MII_KSZPHY_TX_DATA_PAD_SKEW 0x106 |
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| 74 | |
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| 75 | #define PS_TO_REG(p) ((p) / 200) |
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| 76 | |
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| 77 | static int micphy_probe(device_t); |
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| 78 | static int micphy_attach(device_t); |
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| 79 | static int micphy_service(struct mii_softc *, struct mii_data *, int); |
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| 80 | |
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| 81 | static device_method_t micphy_methods[] = { |
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| 82 | /* device interface */ |
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| 83 | DEVMETHOD(device_probe, micphy_probe), |
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| 84 | DEVMETHOD(device_attach, micphy_attach), |
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| 85 | DEVMETHOD(device_detach, mii_phy_detach), |
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| 86 | DEVMETHOD(device_shutdown, bus_generic_shutdown), |
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| 87 | DEVMETHOD_END |
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| 88 | }; |
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| 89 | |
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| 90 | static devclass_t micphy_devclass; |
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| 91 | |
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| 92 | static driver_t micphy_driver = { |
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| 93 | "micphy", |
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| 94 | micphy_methods, |
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| 95 | sizeof(struct mii_softc) |
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| 96 | }; |
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| 97 | |
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| 98 | DRIVER_MODULE(micphy, miibus, micphy_driver, micphy_devclass, 0, 0); |
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| 99 | |
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| 100 | static const struct mii_phydesc micphys[] = { |
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| 101 | MII_PHY_DESC(MICREL, KSZ9021), |
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| 102 | MII_PHY_END |
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| 103 | }; |
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| 104 | |
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| 105 | static const struct mii_phy_funcs micphy_funcs = { |
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| 106 | micphy_service, |
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| 107 | ukphy_status, |
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| 108 | mii_phy_reset |
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| 109 | }; |
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| 110 | |
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| 111 | static void |
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| 112 | micphy_write(struct mii_softc *sc, uint32_t reg, uint32_t val) |
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| 113 | { |
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| 114 | |
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| 115 | PHY_WRITE(sc, MII_KSZPHY_EXTREG, KSZPHY_EXTREG_WRITE | reg); |
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| 116 | PHY_WRITE(sc, MII_KSZPHY_EXTREG_WRITE, val); |
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| 117 | } |
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| 118 | |
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| 119 | #ifndef __rtems__ |
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| 120 | static int |
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| 121 | ksz9021_load_values(struct mii_softc *sc, phandle_t node, uint32_t reg, |
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| 122 | char *field1, char *field2, |
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| 123 | char *field3, char *field4) |
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| 124 | { |
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| 125 | pcell_t dts_value[1]; |
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| 126 | int len; |
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| 127 | int val; |
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| 128 | |
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| 129 | val = 0; |
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| 130 | |
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| 131 | if ((len = OF_getproplen(node, field1)) > 0) { |
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| 132 | OF_getencprop(node, field1, dts_value, len); |
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| 133 | val = PS_TO_REG(dts_value[0]); |
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| 134 | } |
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| 135 | |
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| 136 | if ((len = OF_getproplen(node, field2)) > 0) { |
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| 137 | OF_getencprop(node, field2, dts_value, len); |
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| 138 | val |= PS_TO_REG(dts_value[0]) << 4; |
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| 139 | } |
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| 140 | |
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| 141 | if ((len = OF_getproplen(node, field3)) > 0) { |
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| 142 | OF_getencprop(node, field3, dts_value, len); |
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| 143 | val |= PS_TO_REG(dts_value[0]) << 8; |
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| 144 | } |
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| 145 | |
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| 146 | if ((len = OF_getproplen(node, field4)) > 0) { |
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| 147 | OF_getencprop(node, field4, dts_value, len); |
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| 148 | val |= PS_TO_REG(dts_value[0]) << 12; |
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| 149 | } |
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| 150 | |
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| 151 | micphy_write(sc, reg, val); |
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| 152 | |
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| 153 | return (0); |
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| 154 | } |
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| 155 | #endif /* __rtems__ */ |
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| 156 | |
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| 157 | static int |
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| 158 | micphy_probe(device_t dev) |
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| 159 | { |
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| 160 | |
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| 161 | return (mii_phy_dev_probe(dev, micphys, BUS_PROBE_DEFAULT)); |
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| 162 | } |
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| 163 | |
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| 164 | static int |
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| 165 | micphy_attach(device_t dev) |
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| 166 | { |
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| 167 | struct mii_softc *sc; |
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| 168 | #ifndef __rtems__ |
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| 169 | phandle_t node; |
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| 170 | device_t miibus; |
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| 171 | device_t parent; |
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| 172 | #endif /* __rtems__ */ |
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| 173 | |
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| 174 | sc = device_get_softc(dev); |
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| 175 | |
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| 176 | mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &micphy_funcs, 1); |
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| 177 | mii_phy_setmedia(sc); |
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| 178 | |
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| 179 | #ifndef __rtems__ |
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| 180 | miibus = device_get_parent(dev); |
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| 181 | parent = device_get_parent(miibus); |
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| 182 | |
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| 183 | if ((node = ofw_bus_get_node(parent)) == -1) |
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| 184 | return (ENXIO); |
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| 185 | |
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| 186 | ksz9021_load_values(sc, node, MII_KSZPHY_CLK_CONTROL_PAD_SKEW, |
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| 187 | "txen-skew-ps", "txc-skew-ps", |
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| 188 | "rxdv-skew-ps", "rxc-skew-ps"); |
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| 189 | |
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| 190 | ksz9021_load_values(sc, node, MII_KSZPHY_RX_DATA_PAD_SKEW, |
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| 191 | "rxd0-skew-ps", "rxd1-skew-ps", |
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| 192 | "rxd2-skew-ps", "rxd3-skew-ps"); |
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| 193 | |
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| 194 | ksz9021_load_values(sc, node, MII_KSZPHY_TX_DATA_PAD_SKEW, |
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| 195 | "txd0-skew-ps", "txd1-skew-ps", |
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| 196 | "txd2-skew-ps", "txd3-skew-ps"); |
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| 197 | #endif /* __rtems__ */ |
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| 198 | |
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| 199 | return (0); |
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| 200 | } |
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| 201 | |
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| 202 | static int |
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| 203 | micphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) |
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| 204 | { |
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| 205 | |
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| 206 | switch (cmd) { |
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| 207 | case MII_POLLSTAT: |
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| 208 | break; |
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| 209 | |
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| 210 | case MII_MEDIACHG: |
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| 211 | mii_phy_setmedia(sc); |
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| 212 | break; |
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| 213 | |
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| 214 | case MII_TICK: |
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| 215 | if (mii_phy_tick(sc) == EJUSTRETURN) |
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| 216 | return (0); |
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| 217 | break; |
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| 218 | } |
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| 219 | |
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| 220 | /* Update the media status. */ |
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| 221 | PHY_STATUS(sc); |
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| 222 | |
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| 223 | /* Callback if something changed. */ |
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| 224 | mii_phy_update(sc, cmd); |
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| 225 | return (0); |
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| 226 | } |
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