1 /* $OpenBSD: ohci_acpi.c,v 1.2 2022/04/06 18:59:27 naddy Exp $ */ 2 /* 3 * Copyright (c) 2018 Mark Kettenis 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #include <sys/param.h> 19 #include <sys/systm.h> 20 #include <sys/device.h> 21 22 #include <machine/bus.h> 23 #include <machine/intr.h> 24 25 #include <dev/acpi/acpireg.h> 26 #include <dev/acpi/acpivar.h> 27 #include <dev/acpi/acpidev.h> 28 #include <dev/acpi/amltypes.h> 29 #include <dev/acpi/dsdt.h> 30 31 #include <dev/usb/usb.h> 32 #include <dev/usb/usbdi.h> 33 #include <dev/usb/usbdivar.h> 34 #include <dev/usb/usb_mem.h> 35 36 #include <dev/usb/ohcireg.h> 37 #include <dev/usb/ohcivar.h> 38 39 struct ohci_acpi_softc { 40 struct ohci_softc sc; 41 struct acpi_softc *sc_acpi; 42 struct aml_node *sc_node; 43 void *sc_ih; 44 }; 45 46 int ohci_acpi_match(struct device *, void *, void *); 47 void ohci_acpi_attach(struct device *, struct device *, void *); 48 49 const struct cfattach ohci_acpi_ca = { 50 sizeof(struct ohci_acpi_softc), ohci_acpi_match, ohci_acpi_attach 51 }; 52 53 void ohci_acpi_attach_deferred(struct device *); 54 55 int 56 ohci_acpi_match(struct device *parent, void *match, void *aux) 57 { 58 struct acpi_attach_args *aaa = aux; 59 60 return acpi_matchcls(aaa, PCI_CLASS_SERIALBUS, 61 PCI_SUBCLASS_SERIALBUS_USB, PCI_INTERFACE_OHCI); 62 } 63 64 void 65 ohci_acpi_attach(struct device *parent, struct device *self, void *aux) 66 { 67 struct ohci_acpi_softc *sc = (struct ohci_acpi_softc *)self; 68 struct acpi_attach_args *aaa = aux; 69 70 sc->sc_acpi = (struct acpi_softc *)parent; 71 sc->sc_node = aaa->aaa_node; 72 printf(" %s", sc->sc_node->name); 73 74 printf(" addr 0x%llx/0x%llx", aaa->aaa_addr[0], aaa->aaa_size[0]); 75 printf(" irq %d", aaa->aaa_irq[0]); 76 77 sc->sc.iot = aaa->aaa_bst[0]; 78 sc->sc.sc_size = aaa->aaa_size[0]; 79 sc->sc.sc_bus.dmatag = aaa->aaa_dmat; 80 81 if (bus_space_map(sc->sc.iot, aaa->aaa_addr[0], aaa->aaa_size[0], 82 0, &sc->sc.ioh)) { 83 printf(": can't map registers\n"); 84 return; 85 } 86 87 /* Record what interrupts were enabled by SMM/BIOS. */ 88 sc->sc.sc_intre = bus_space_read_4(sc->sc.iot, sc->sc.ioh, 89 OHCI_INTERRUPT_ENABLE); 90 91 /* Disable interrupts, so we don't get any spurious ones. */ 92 bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE, 93 OHCI_MIE); 94 95 bus_space_barrier(sc->sc.iot, sc->sc.ioh, 0, sc->sc.sc_size, 96 BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE); 97 bus_space_write_4(sc->sc.iot, sc->sc.ioh, 98 OHCI_INTERRUPT_DISABLE, OHCI_MIE); 99 100 /* Map and establish the interrupt. */ 101 sc->sc_ih = acpi_intr_establish(aaa->aaa_irq[0], aaa->aaa_irq_flags[0], 102 IPL_USB, ohci_intr, sc, sc->sc.sc_bus.bdev.dv_xname); 103 if (sc->sc_ih == NULL) { 104 printf(": can't establish interrupt\n"); 105 goto unmap; 106 } 107 108 printf(": "); 109 110 strlcpy(sc->sc.sc_vendor, "Generic", sizeof(sc->sc.sc_vendor)); 111 112 /* Display revision and perform legacy emulation handover. */ 113 if (ohci_checkrev(&sc->sc) != USBD_NORMAL_COMPLETION || 114 ohci_handover(&sc->sc) != USBD_NORMAL_COMPLETION) 115 goto disestablish_ret; 116 117 /* Ignore interrupts for now */ 118 sc->sc.sc_bus.dying = 1; 119 120 config_defer(self, ohci_acpi_attach_deferred); 121 return; 122 123 disestablish_ret: 124 acpi_intr_disestablish(sc->sc_ih); 125 unmap: 126 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 127 return; 128 } 129 130 void 131 ohci_acpi_attach_deferred(struct device *self) 132 { 133 struct ohci_acpi_softc *sc = (struct ohci_acpi_softc *)self; 134 usbd_status r; 135 int s; 136 137 s = splusb(); 138 sc->sc.sc_bus.dying = 0; 139 r = ohci_init(&sc->sc); 140 splx(s); 141 142 if (r != USBD_NORMAL_COMPLETION) { 143 printf("%s: init failed, error=%d\n", 144 sc->sc.sc_bus.bdev.dv_xname, r); 145 acpi_intr_disestablish(sc->sc_ih); 146 sc->sc_ih = NULL; 147 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 148 sc->sc.sc_size = 0; 149 return; 150 } 151 152 /* Attach usb device. */ 153 config_found(self, &sc->sc.sc_bus, usbctlprint); 154 } 155