1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2023 Beckhoff Automation GmbH & Co. KG 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/cdefs.h> 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/kernel.h> 33 #include <sys/module.h> 34 #include <sys/malloc.h> 35 #include <sys/bus.h> 36 #include <sys/cpu.h> 37 #include <machine/bus.h> 38 39 #include <dev/ofw/openfirm.h> 40 #include <dev/ofw/ofw_bus.h> 41 #include <dev/ofw/ofw_bus_subr.h> 42 43 #include <dev/extres/hwreset/hwreset.h> 44 45 #include <dev/firmware/xilinx/pm_defs.h> 46 47 #include "hwreset_if.h" 48 #include "zynqmp_firmware_if.h" 49 50 #define ZYNQMP_RESET_PCIE_CFG 0 51 #define ZYNQMP_RESET_PCIE_BRIDGE 1 52 #define ZYNQMP_RESET_PCIE_CTRL 2 53 #define ZYNQMP_RESET_DP 3 54 #define ZYNQMP_RESET_SWDT_CRF 4 55 #define ZYNQMP_RESET_AFI_FM5 5 56 #define ZYNQMP_RESET_AFI_FM4 6 57 #define ZYNQMP_RESET_AFI_FM3 7 58 #define ZYNQMP_RESET_AFI_FM2 8 59 #define ZYNQMP_RESET_AFI_FM1 9 60 #define ZYNQMP_RESET_AFI_FM0 10 61 #define ZYNQMP_RESET_GDMA 11 62 #define ZYNQMP_RESET_GPU_PP1 12 63 #define ZYNQMP_RESET_GPU_PP0 13 64 #define ZYNQMP_RESET_GPU 14 65 #define ZYNQMP_RESET_GT 15 66 #define ZYNQMP_RESET_SATA 16 67 #define ZYNQMP_RESET_ACPU3_PWRON 17 68 #define ZYNQMP_RESET_ACPU2_PWRON 18 69 #define ZYNQMP_RESET_ACPU1_PWRON 19 70 #define ZYNQMP_RESET_ACPU0_PWRON 20 71 #define ZYNQMP_RESET_APU_L2 21 72 #define ZYNQMP_RESET_ACPU3 22 73 #define ZYNQMP_RESET_ACPU2 23 74 #define ZYNQMP_RESET_ACPU1 24 75 #define ZYNQMP_RESET_ACPU0 25 76 #define ZYNQMP_RESET_DDR 26 77 #define ZYNQMP_RESET_APM_FPD 27 78 #define ZYNQMP_RESET_SOFT 28 79 #define ZYNQMP_RESET_GEM0 29 80 #define ZYNQMP_RESET_GEM1 30 81 #define ZYNQMP_RESET_GEM2 31 82 #define ZYNQMP_RESET_GEM3 32 83 #define ZYNQMP_RESET_QSPI 33 84 #define ZYNQMP_RESET_UART0 34 85 #define ZYNQMP_RESET_UART1 35 86 #define ZYNQMP_RESET_SPI0 36 87 #define ZYNQMP_RESET_SPI1 37 88 #define ZYNQMP_RESET_SDIO0 38 89 #define ZYNQMP_RESET_SDIO1 39 90 #define ZYNQMP_RESET_CAN0 40 91 #define ZYNQMP_RESET_CAN1 41 92 #define ZYNQMP_RESET_I2C0 42 93 #define ZYNQMP_RESET_I2C1 43 94 #define ZYNQMP_RESET_TTC0 44 95 #define ZYNQMP_RESET_TTC1 45 96 #define ZYNQMP_RESET_TTC2 46 97 #define ZYNQMP_RESET_TTC3 47 98 #define ZYNQMP_RESET_SWDT_CRL 48 99 #define ZYNQMP_RESET_NAND 49 100 #define ZYNQMP_RESET_ADMA 50 101 #define ZYNQMP_RESET_GPIO 51 102 #define ZYNQMP_RESET_IOU_CC 52 103 #define ZYNQMP_RESET_TIMESTAMP 53 104 #define ZYNQMP_RESET_RPU_R50 54 105 #define ZYNQMP_RESET_RPU_R51 55 106 #define ZYNQMP_RESET_RPU_AMBA 56 107 #define ZYNQMP_RESET_OCM 57 108 #define ZYNQMP_RESET_RPU_PGE 58 109 #define ZYNQMP_RESET_USB0_CORERESET 59 110 #define ZYNQMP_RESET_USB1_CORERESET 60 111 #define ZYNQMP_RESET_USB0_HIBERRESET 61 112 #define ZYNQMP_RESET_USB1_HIBERRESET 62 113 #define ZYNQMP_RESET_USB0_APB 63 114 #define ZYNQMP_RESET_USB1_APB 64 115 #define ZYNQMP_RESET_IPI 65 116 #define ZYNQMP_RESET_APM_LPD 66 117 #define ZYNQMP_RESET_RTC 67 118 #define ZYNQMP_RESET_SYSMON 68 119 #define ZYNQMP_RESET_AFI_FM6 69 120 #define ZYNQMP_RESET_LPD_SWDT 70 121 #define ZYNQMP_RESET_FPD 71 122 #define ZYNQMP_RESET_RPU_DBG1 72 123 #define ZYNQMP_RESET_RPU_DBG0 73 124 #define ZYNQMP_RESET_DBG_LPD 74 125 #define ZYNQMP_RESET_DBG_FPD 75 126 #define ZYNQMP_RESET_APLL 76 127 #define ZYNQMP_RESET_DPLL 77 128 #define ZYNQMP_RESET_VPLL 78 129 #define ZYNQMP_RESET_IOPLL 79 130 #define ZYNQMP_RESET_RPLL 80 131 #define ZYNQMP_RESET_GPO3_PL_0 81 132 #define ZYNQMP_RESET_GPO3_PL_1 82 133 #define ZYNQMP_RESET_GPO3_PL_2 83 134 #define ZYNQMP_RESET_GPO3_PL_3 84 135 #define ZYNQMP_RESET_GPO3_PL_4 85 136 #define ZYNQMP_RESET_GPO3_PL_5 86 137 #define ZYNQMP_RESET_GPO3_PL_6 87 138 #define ZYNQMP_RESET_GPO3_PL_7 88 139 #define ZYNQMP_RESET_GPO3_PL_8 89 140 #define ZYNQMP_RESET_GPO3_PL_9 90 141 #define ZYNQMP_RESET_GPO3_PL_10 91 142 #define ZYNQMP_RESET_GPO3_PL_11 92 143 #define ZYNQMP_RESET_GPO3_PL_12 93 144 #define ZYNQMP_RESET_GPO3_PL_13 94 145 #define ZYNQMP_RESET_GPO3_PL_14 95 146 #define ZYNQMP_RESET_GPO3_PL_15 96 147 #define ZYNQMP_RESET_GPO3_PL_16 97 148 #define ZYNQMP_RESET_GPO3_PL_17 98 149 #define ZYNQMP_RESET_GPO3_PL_18 99 150 #define ZYNQMP_RESET_GPO3_PL_19 100 151 #define ZYNQMP_RESET_GPO3_PL_20 101 152 #define ZYNQMP_RESET_GPO3_PL_21 102 153 #define ZYNQMP_RESET_GPO3_PL_22 103 154 #define ZYNQMP_RESET_GPO3_PL_23 104 155 #define ZYNQMP_RESET_GPO3_PL_24 105 156 #define ZYNQMP_RESET_GPO3_PL_25 106 157 #define ZYNQMP_RESET_GPO3_PL_26 107 158 #define ZYNQMP_RESET_GPO3_PL_27 108 159 #define ZYNQMP_RESET_GPO3_PL_28 109 160 #define ZYNQMP_RESET_GPO3_PL_29 110 161 #define ZYNQMP_RESET_GPO3_PL_30 111 162 #define ZYNQMP_RESET_GPO3_PL_31 112 163 #define ZYNQMP_RESET_RPU_LS 113 164 #define ZYNQMP_RESET_PS_ONLY 114 165 #define ZYNQMP_RESET_PL 115 166 #define ZYNQMP_RESET_PS_PL0 116 167 #define ZYNQMP_RESET_PS_PL1 117 168 #define ZYNQMP_RESET_PS_PL2 118 169 #define ZYNQMP_RESET_PS_PL3 119 170 #define ZYNQMP_RESET_MAX ZYNQMP_RESET_PS_PL3 171 172 struct zynqmp_reset_softc { 173 device_t dev; 174 device_t parent; 175 }; 176 177 static int 178 zynqmp_reset_assert(device_t dev, intptr_t id, bool reset) 179 { 180 struct zynqmp_reset_softc *sc; 181 int rv; 182 183 if (id > ZYNQMP_RESET_MAX) 184 return (EINVAL); 185 sc = device_get_softc(dev); 186 rv = ZYNQMP_FIRMWARE_RESET_ASSERT(sc->parent, id, reset); 187 return (rv); 188 } 189 190 static int 191 zynqmp_reset_is_asserted(device_t dev, intptr_t id, bool *reset) 192 { 193 struct zynqmp_reset_softc *sc; 194 int rv; 195 196 if (id > ZYNQMP_RESET_MAX) 197 return (EINVAL); 198 sc = device_get_softc(dev); 199 rv = ZYNQMP_FIRMWARE_RESET_GET_STATUS(sc->parent, id, reset); 200 201 return (rv); 202 } 203 204 static int 205 zynqmp_reset_probe(device_t dev) 206 { 207 208 if (!ofw_bus_status_okay(dev)) 209 return (ENXIO); 210 if (!ofw_bus_is_compatible(dev, "xlnx,zynqmp-reset")) 211 return (ENXIO); 212 device_set_desc(dev, "ZynqMP Reset Controller"); 213 214 return (BUS_PROBE_DEFAULT); 215 } 216 217 static int 218 zynqmp_reset_attach(device_t dev) 219 { 220 struct zynqmp_reset_softc *sc; 221 222 sc = device_get_softc(dev); 223 sc->dev = dev; 224 sc->parent = device_get_parent(dev); 225 226 /* register our self as a reset provider */ 227 hwreset_register_ofw_provider(dev); 228 229 return (0); 230 } 231 232 static device_method_t zynqmp_reset_methods[] = { 233 /* device_if */ 234 DEVMETHOD(device_probe, zynqmp_reset_probe), 235 DEVMETHOD(device_attach, zynqmp_reset_attach), 236 237 /* Reset interface */ 238 DEVMETHOD(hwreset_assert, zynqmp_reset_assert), 239 DEVMETHOD(hwreset_is_asserted, zynqmp_reset_is_asserted), 240 241 DEVMETHOD_END 242 }; 243 244 static driver_t zynqmp_reset_driver = { 245 "zynqmp_reset", 246 zynqmp_reset_methods, 247 sizeof(struct zynqmp_reset_softc), 248 }; 249 250 EARLY_DRIVER_MODULE(zynqmp_reset, simplebus, zynqmp_reset_driver, 0, 0, 251 BUS_PASS_BUS + BUS_PASS_ORDER_LAST); 252