1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2022 Adrian Chadd <adrian@FreeBSD.org>.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #include <sys/param.h>
29 #include <sys/bus.h>
30 #include <sys/errno.h>
31 #include <sys/kernel.h>
32 #include <sys/malloc.h>
33 #include <sys/module.h>
34 #include <sys/socket.h>
35 #include <sys/sockio.h>
36 #include <sys/sysctl.h>
37 #include <sys/systm.h>
38
39 #include <net/if.h>
40 #include <net/if_var.h>
41 #include <net/if_arp.h>
42 #include <net/ethernet.h>
43 #include <net/if_dl.h>
44 #include <net/if_media.h>
45 #include <net/if_types.h>
46
47 #include <machine/bus.h>
48 #include <dev/iicbus/iic.h>
49 #include <dev/iicbus/iiconf.h>
50 #include <dev/iicbus/iicbus.h>
51 #include <dev/mii/mii.h>
52 #include <dev/mii/miivar.h>
53 #include <dev/mdio/mdio.h>
54 #include <dev/clk/clk.h>
55 #include <dev/hwreset/hwreset.h>
56
57 #include <dev/fdt/fdt_common.h>
58 #include <dev/ofw/ofw_bus.h>
59 #include <dev/ofw/ofw_bus_subr.h>
60
61 #include <dev/etherswitch/etherswitch.h>
62
63 #include <dev/etherswitch/ar40xx/ar40xx_var.h>
64 #include <dev/etherswitch/ar40xx/ar40xx_reg.h>
65 #include <dev/etherswitch/ar40xx/ar40xx_hw.h>
66
67 #include <dev/etherswitch/ar40xx/ar40xx_hw_mdio.h>
68
69 #include "mdio_if.h"
70 #include "miibus_if.h"
71 #include "etherswitch_if.h"
72
73 int
ar40xx_hw_phy_dbg_write(struct ar40xx_softc * sc,int phy,uint16_t dbg,uint16_t data)74 ar40xx_hw_phy_dbg_write(struct ar40xx_softc *sc, int phy, uint16_t dbg,
75 uint16_t data)
76 {
77 AR40XX_LOCK_ASSERT(sc);
78 device_printf(sc->sc_dev, "%s: TODO\n", __func__);
79 return (0);
80 }
81
82 int
ar40xx_hw_phy_dbg_read(struct ar40xx_softc * sc,int phy,uint16_t dbg)83 ar40xx_hw_phy_dbg_read(struct ar40xx_softc *sc, int phy, uint16_t dbg)
84 {
85 AR40XX_LOCK_ASSERT(sc);
86 device_printf(sc->sc_dev, "%s: TODO\n", __func__);
87 return (-1);
88 }
89
90 int
ar40xx_hw_phy_mmd_write(struct ar40xx_softc * sc,uint32_t phy_id,uint16_t mmd_num,uint16_t reg_id,uint16_t reg_val)91 ar40xx_hw_phy_mmd_write(struct ar40xx_softc *sc, uint32_t phy_id,
92 uint16_t mmd_num, uint16_t reg_id, uint16_t reg_val)
93 {
94
95 AR40XX_LOCK_ASSERT(sc);
96
97 MDIO_WRITEREG(sc->sc_mdio_dev, phy_id, AR40XX_MII_ATH_MMD_ADDR,
98 mmd_num);
99 MDIO_WRITEREG(sc->sc_mdio_dev, phy_id, AR40XX_MII_ATH_MMD_DATA,
100 reg_id);
101 MDIO_WRITEREG(sc->sc_mdio_dev, phy_id, AR40XX_MII_ATH_MMD_ADDR,
102 0x4000 | mmd_num);
103 MDIO_WRITEREG(sc->sc_mdio_dev, phy_id, AR40XX_MII_ATH_MMD_DATA,
104 reg_val);
105
106 return (0);
107 }
108
109 int
ar40xx_hw_phy_mmd_read(struct ar40xx_softc * sc,uint32_t phy_id,uint16_t mmd_num,uint16_t reg_id)110 ar40xx_hw_phy_mmd_read(struct ar40xx_softc *sc, uint32_t phy_id,
111 uint16_t mmd_num, uint16_t reg_id)
112 {
113 uint16_t value;
114
115 AR40XX_LOCK_ASSERT(sc);
116
117 MDIO_WRITEREG(sc->sc_mdio_dev, phy_id, AR40XX_MII_ATH_MMD_ADDR,
118 mmd_num);
119 MDIO_WRITEREG(sc->sc_mdio_dev, phy_id, AR40XX_MII_ATH_MMD_DATA,
120 reg_id);
121 MDIO_WRITEREG(sc->sc_mdio_dev, phy_id, AR40XX_MII_ATH_MMD_ADDR,
122 0x4000 | mmd_num);
123
124 value = MDIO_READREG(sc->sc_mdio_dev, phy_id,
125 AR40XX_MII_ATH_MMD_DATA);
126
127 return value;
128 }
129
130