pq3ehci.c revision 1.5
1 /* $NetBSD: pq3ehci.c,v 1.5 2012/07/20 02:14:01 matt Exp $ */ 2 /*- 3 * Copyright (c) 2010, 2011 The NetBSD Foundation, Inc. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by Matt Thomas of 3am Software Foundry. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: pq3ehci.c,v 1.5 2012/07/20 02:14:01 matt Exp $"); 33 34 #include "opt_usb.h" 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/device.h> 39 #include <sys/kernel.h> 40 #include <sys/proc.h> 41 #include <sys/queue.h> 42 43 #include <sys/bus.h> 44 45 #include <powerpc/booke/cpuvar.h> 46 #include <powerpc/booke/e500var.h> 47 #include <powerpc/booke/e500reg.h> 48 49 #include <dev/usb/usb.h> 50 #include <dev/usb/usbdi.h> 51 #include <dev/usb/usbdivar.h> 52 #include <dev/usb/usb_mem.h> 53 54 #include <dev/usb/ehcireg.h> 55 #include <dev/usb/ehcivar.h> 56 57 #ifdef EHCI_DEBUG 58 #define DPRINTF(x) if (ehcidebug) printf x 59 extern int ehcidebug; 60 #else 61 #define DPRINTF(x) 62 #endif 63 64 static int pq3ehci_match(device_t, cfdata_t, void *); 65 static void pq3ehci_attach(device_t, device_t, void *); 66 67 struct pq3ehci_softc { 68 ehci_softc_t sc; 69 void *sc_ih; /* interrupt vectoring */ 70 }; 71 72 CFATTACH_DECL_NEW(pq3ehci, sizeof(struct pq3ehci_softc), 73 pq3ehci_match, pq3ehci_attach, NULL, NULL); 74 75 static int 76 pq3ehci_match(device_t parent, cfdata_t cf, void *aux) 77 { 78 79 if (!e500_cpunode_submatch(parent, cf, cf->cf_name, aux)) 80 return 0; 81 82 return 1; 83 } 84 85 static void 86 pq3ehci_attach(device_t parent, device_t self, void *aux) 87 { 88 struct cpunode_softc * const psc = device_private(parent); 89 struct pq3ehci_softc * const sc = device_private(self); 90 struct cpunode_attach_args * const cna = aux; 91 struct cpunode_locators * const cnl = &cna->cna_locs; 92 int error; 93 94 psc->sc_children |= cna->cna_childmask; 95 sc->sc.iot = cna->cna_le_memt; /* EHCI registers are little endian */ 96 sc->sc.sc_dev = self; 97 sc->sc.sc_bus.dmatag = cna->cna_dmat; 98 sc->sc.sc_bus.hci_private = sc; 99 sc->sc.sc_bus.usbrev = USBREV_2_0; 100 sc->sc.sc_ncomp = 0; 101 sc->sc.sc_flags |= EHCIF_ETTF; 102 103 aprint_naive(": USB controller\n"); 104 aprint_normal(": USB controller\n"); 105 106 error = bus_space_map(sc->sc.iot, cnl->cnl_addr, cnl->cnl_size, 0, 107 &sc->sc.ioh); 108 if (error) { 109 aprint_error_dev(self, 110 "can't map registers for %s#%u: %d\n", 111 cnl->cnl_name, cnl->cnl_instance, error); 112 return; 113 } 114 sc->sc.sc_size = cnl->cnl_size; 115 116 /* 117 * We need to tell the USB interface to snoop all off RAM starting 118 * at 0. Since it can do it by powers of 2, get the highest RAM 119 * address and roughly round it to the next power of 2 and find 120 * the number of leading zero bits. 121 */ 122 cpu_write_4(cnl->cnl_addr + USB_SNOOP1, 123 SNOOP_2GB - __builtin_clz(curcpu()->ci_softc->cpu_highmem * 2 - 1)); 124 cpu_write_4(cnl->cnl_addr + USB_CONTROL, USB_EN); 125 126 sc->sc_ih = intr_establish(cnl->cnl_intrs[0], IPL_USB, IST_ONCHIP, 127 ehci_intr, sc); 128 if (sc->sc_ih == NULL) { 129 aprint_error_dev(self, "failed to establish interrupt %d\n", 130 cnl->cnl_intrs[0]); 131 goto fail; 132 } 133 aprint_normal_dev(self, "interrupting on irq %d\n", 134 cnl->cnl_intrs[0]); 135 136 /* offs is needed for EOWRITEx */ 137 sc->sc.sc_offs = EREAD1(&sc->sc, EHCI_CAPLENGTH); 138 139 /* Disable interrupts, so we don't get any spurious ones. */ 140 DPRINTF(("%s: offs=%d\n", device_xname(self), sc->sc.sc_offs)); 141 EOWRITE4(&sc->sc, EHCI_USBINTR, 0); 142 143 error = ehci_init(&sc->sc); 144 if (error != USBD_NORMAL_COMPLETION) { 145 aprint_error_dev(self, "init failed, error=%d\n", error); 146 goto fail; 147 } 148 149 /* Attach usb device. */ 150 sc->sc.sc_child = config_found(self, &sc->sc.sc_bus, usbctlprint); 151 return; 152 153 fail: 154 if (sc->sc_ih) { 155 intr_disestablish(sc->sc_ih); 156 sc->sc_ih = NULL; 157 } 158 if (sc->sc.sc_size) { 159 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 160 sc->sc.sc_size = 0; 161 } 162 return; 163 } 164
Indexes created Tue Oct 07 21:09:53 GMT 2025