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/extres/clk/clk.h> 55 #include <dev/extres/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 #include <dev/etherswitch/ar40xx/ar40xx_hw_vtu.h> 67 #include <dev/etherswitch/ar40xx/ar40xx_debug.h> 68 69 #include "mdio_if.h" 70 #include "miibus_if.h" 71 #include "etherswitch_if.h" 72 73 74 /* 75 * Perform a VTU (vlan table unit) operation. 76 */ 77 int 78 ar40xx_hw_vtu_op(struct ar40xx_softc *sc, uint32_t op, uint32_t val) 79 { 80 int ret; 81 82 AR40XX_DPRINTF(sc, AR40XX_DBG_VTU_OP, 83 "%s: called; op=0x%08x, val=0x%08x\n", 84 __func__, op, val); 85 86 ret = (ar40xx_hw_wait_bit(sc, AR40XX_REG_VTU_FUNC1, 87 AR40XX_VTU_FUNC1_BUSY, 0)); 88 if (ret != 0) 89 return (ret); 90 91 if ((op & AR40XX_VTU_FUNC1_OP) == AR40XX_VTU_FUNC1_OP_LOAD) { 92 AR40XX_REG_WRITE(sc, AR40XX_REG_VTU_FUNC0, val); 93 AR40XX_REG_BARRIER_WRITE(sc); 94 } 95 96 op |= AR40XX_VTU_FUNC1_BUSY; 97 AR40XX_REG_WRITE(sc, AR40XX_REG_VTU_FUNC1, op); 98 AR40XX_REG_BARRIER_WRITE(sc); 99 100 return (0); 101 } 102 103 /* 104 * Load in a VLAN table map / port configuration for the given 105 * vlan ID. 106 */ 107 int 108 ar40xx_hw_vtu_load_vlan(struct ar40xx_softc *sc, uint32_t vid, 109 uint32_t port_mask, uint32_t untagged_mask) 110 { 111 112 uint32_t op, val, mode; 113 int i, ret; 114 115 AR40XX_DPRINTF(sc, AR40XX_DBG_VTU_OP, 116 "%s: called; vid=%d port_mask=0x%08x, untagged_mask=0x%08x\n", 117 __func__, vid, port_mask, untagged_mask); 118 119 op = AR40XX_VTU_FUNC1_OP_LOAD | (vid << AR40XX_VTU_FUNC1_VID_S); 120 val = AR40XX_VTU_FUNC0_VALID | AR40XX_VTU_FUNC0_IVL; 121 for (i = 0; i < AR40XX_NUM_PORTS; i++) { 122 if ((port_mask & (1U << i)) == 0) 123 /* Not in the VLAN at all */ 124 mode = AR40XX_VTU_FUNC0_EG_MODE_NOT; 125 else if (sc->sc_vlan.vlan == 0) 126 /* VLAN mode disabled; keep the provided VLAN tag */ 127 mode = AR40XX_VTU_FUNC0_EG_MODE_KEEP; 128 else if (untagged_mask & (1U << i)) 129 /* Port in the VLAN; is untagged */ 130 mode = AR40XX_VTU_FUNC0_EG_MODE_UNTAG; 131 else 132 /* Port is in the VLAN; is tagged */ 133 mode = AR40XX_VTU_FUNC0_EG_MODE_TAG; 134 val |= mode << AR40XX_VTU_FUNC0_EG_MODE_S(i); 135 } 136 ret = ar40xx_hw_vtu_op(sc, op, val); 137 138 return (ret); 139 } 140 141 /* 142 * Flush all VLAN port entries. 143 */ 144 int 145 ar40xx_hw_vtu_flush(struct ar40xx_softc *sc) 146 { 147 int ret; 148 149 AR40XX_DPRINTF(sc, AR40XX_DBG_VTU_OP, "%s: called\n", __func__); 150 151 ret = ar40xx_hw_vtu_op(sc, AR40XX_VTU_FUNC1_OP_FLUSH, 0); 152 return (ret); 153 } 154 155 /* 156 * Get the VLAN port map for the given vlan ID. 157 */ 158 int 159 ar40xx_hw_vtu_get_vlan(struct ar40xx_softc *sc, int vid, uint32_t *ports, 160 uint32_t *untagged_ports) 161 { 162 uint32_t op, reg, val; 163 int i, r; 164 165 op = AR40XX_VTU_FUNC1_OP_GET_ONE; 166 167 /* Filter out any etherswitch VID flags; only grab the VLAN ID */ 168 vid &= ETHERSWITCH_VID_MASK; 169 170 /* XXX TODO: the VTU here stores egress mode - keep, tag, untagged, none */ 171 op |= (vid << AR40XX_VTU_FUNC1_VID_S); 172 r = ar40xx_hw_vtu_op(sc, op, 0); 173 if (r != 0) { 174 device_printf(sc->sc_dev, "%s: %d: op failed\n", __func__, vid); 175 return (r); 176 } 177 178 AR40XX_REG_BARRIER_READ(sc); 179 reg = AR40XX_REG_READ(sc, AR40XX_REG_VTU_FUNC0); 180 181 *ports = 0; 182 for (i = 0; i < AR40XX_NUM_PORTS; i++) { 183 val = reg >> AR40XX_VTU_FUNC0_EG_MODE_S(i); 184 val = val & 0x3; 185 /* XXX KEEP (unmodified? For non-dot1q operation?) */ 186 if (val == AR40XX_VTU_FUNC0_EG_MODE_TAG) { 187 *ports |= (1 << i); 188 } else if (val == AR40XX_VTU_FUNC0_EG_MODE_UNTAG) { 189 *ports |= (1 << i); 190 *untagged_ports |= (1 << i); 191 } 192 } 193 194 return (0); 195 } 196 197