1 /* $NetBSD: bcm2835_dwctwo.c,v 1.12 2021/08/07 16:18:43 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Nick Hudson 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: bcm2835_dwctwo.c,v 1.12 2021/08/07 16:18:43 thorpej Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/device.h> 38 #include <sys/mutex.h> 39 #include <sys/bus.h> 40 #include <sys/workqueue.h> 41 42 #include <arm/broadcom/bcm2835reg.h> 43 44 #include <dev/fdt/fdtvar.h> 45 46 #include <dev/usb/usb.h> 47 #include <dev/usb/usbdi.h> 48 #include <dev/usb/usbdivar.h> 49 #include <dev/usb/usb_mem.h> 50 51 #include <dwc2/dwc2var.h> 52 53 #include <dwc2/dwc2.h> 54 #include "dwc2_core.h" 55 56 struct bcmdwc2_softc { 57 struct dwc2_softc sc_dwc2; 58 59 void *sc_ih; 60 int sc_phandle; 61 }; 62 63 static struct dwc2_core_params bcmdwc2_params = { 64 .otg_cap = 0, /* HNP/SRP capable */ 65 .otg_ver = 0, /* 1.3 */ 66 .dma_enable = 1, 67 .dma_desc_enable = 0, 68 .speed = 0, /* High Speed */ 69 .enable_dynamic_fifo = 1, 70 .en_multiple_tx_fifo = 1, 71 .host_rx_fifo_size = 774, /* 774 DWORDs */ 72 .host_nperio_tx_fifo_size = 256, /* 256 DWORDs */ 73 .host_perio_tx_fifo_size = 512, /* 512 DWORDs */ 74 .max_transfer_size = 65535, 75 .max_packet_count = 511, 76 .host_channels = 8, 77 .phy_type = 1, /* UTMI */ 78 .phy_utmi_width = 8, /* 8 bits */ 79 .phy_ulpi_ddr = 0, /* Single */ 80 .phy_ulpi_ext_vbus = 0, 81 .i2c_enable = 0, 82 .ulpi_fs_ls = 0, 83 .host_support_fs_ls_low_power = 0, 84 .host_ls_low_power_phy_clk = 0, /* 48 MHz */ 85 .ts_dline = 0, 86 .reload_ctl = 0, 87 .ahbcfg = 0x10, 88 .uframe_sched = 1, 89 .external_id_pin_ctl = -1, 90 .hibernation = -1, 91 }; 92 93 static int bcmdwc2_match(device_t, struct cfdata *, void *); 94 static void bcmdwc2_attach(device_t, device_t, void *); 95 static void bcmdwc2_deferred(device_t); 96 97 CFATTACH_DECL_NEW(bcmdwctwo, sizeof(struct bcmdwc2_softc), 98 bcmdwc2_match, bcmdwc2_attach, NULL, NULL); 99 100 static const struct device_compatible_entry compat_data[] = { 101 { .compat = "brcm,bcm2708-usb" }, 102 { .compat = "brcm,bcm2835-usb" }, 103 DEVICE_COMPAT_EOL 104 }; 105 106 /* ARGSUSED */ 107 static int 108 bcmdwc2_match(device_t parent, struct cfdata *match, void *aux) 109 { 110 struct fdt_attach_args * const faa = aux; 111 112 return of_compatible_match(faa->faa_phandle, compat_data); 113 } 114 115 /* ARGSUSED */ 116 static void 117 bcmdwc2_attach(device_t parent, device_t self, void *aux) 118 { 119 struct bcmdwc2_softc *sc = device_private(self); 120 struct fdt_attach_args * const faa = aux; 121 const int phandle = faa->faa_phandle; 122 bus_addr_t addr; 123 bus_size_t size; 124 int error; 125 126 aprint_naive(": USB controller\n"); 127 aprint_normal(": USB controller\n"); 128 129 if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { 130 aprint_error(": couldn't get registers\n"); 131 return; 132 } 133 134 sc->sc_phandle = phandle; 135 sc->sc_dwc2.sc_dev = self; 136 sc->sc_dwc2.sc_iot = faa->faa_bst; 137 sc->sc_dwc2.sc_bus.ub_dmatag = faa->faa_dmat; 138 sc->sc_dwc2.sc_params = &bcmdwc2_params; 139 140 error = bus_space_map(faa->faa_bst, addr, size, 0, &sc->sc_dwc2.sc_ioh); 141 if (error) { 142 aprint_error(": couldn't map device\n"); 143 return; 144 } 145 146 char intrstr[128]; 147 if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) { 148 aprint_error(": failed to decode interrupt\n"); 149 return; 150 } 151 152 sc->sc_ih = fdtbus_intr_establish_xname(phandle, 0, IPL_VM, FDT_INTR_MPSAFE, 153 dwc2_intr, &sc->sc_dwc2, device_xname(self)); 154 155 if (sc->sc_ih == NULL) { 156 aprint_error_dev(self, "failed to establish interrupt %s\n", 157 intrstr); 158 goto fail; 159 } 160 aprint_normal_dev(self, "interrupting on %s\n", intrstr); 161 config_interrupts(self, bcmdwc2_deferred); 162 163 return; 164 165 fail: 166 if (sc->sc_ih) { 167 fdtbus_intr_disestablish(sc->sc_phandle, sc->sc_ih); 168 sc->sc_ih = NULL; 169 } 170 bus_space_unmap(sc->sc_dwc2.sc_iot, sc->sc_dwc2.sc_ioh, size); 171 } 172 173 static void 174 bcmdwc2_deferred(device_t self) 175 { 176 struct bcmdwc2_softc *sc = device_private(self); 177 int error; 178 179 error = dwc2_init(&sc->sc_dwc2); 180 if (error != 0) { 181 aprint_error_dev(self, "couldn't initialize host, error=%d\n", 182 error); 183 return; 184 } 185 sc->sc_dwc2.sc_child = config_found(sc->sc_dwc2.sc_dev, 186 &sc->sc_dwc2.sc_bus, usbctlprint, CFARGS_NONE); 187 } 188
Indexes created Mon Sep 29 21:09:56 GMT 2025