2 * Copyright (c) 2010 Hans Petter Selasky. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 #include <sys/cdefs.h>
27 __FBSDID("$FreeBSD$");
29 #include <sys/stdint.h>
30 #include <sys/stddef.h>
31 #include <sys/param.h>
32 #include <sys/queue.h>
33 #include <sys/types.h>
34 #include <sys/systm.h>
35 #include <sys/kernel.h>
37 #include <sys/module.h>
39 #include <sys/mutex.h>
40 #include <sys/condvar.h>
41 #include <sys/sysctl.h>
43 #include <sys/unistd.h>
44 #include <sys/callout.h>
45 #include <sys/malloc.h>
48 #include <dev/usb/usb.h>
49 #include <dev/usb/usbdi.h>
51 #include <dev/usb/usb_core.h>
52 #include <dev/usb/usb_busdma.h>
53 #include <dev/usb/usb_process.h>
54 #include <dev/usb/usb_util.h>
56 #include <dev/usb/usb_controller.h>
57 #include <dev/usb/usb_bus.h>
58 #include <dev/usb/usb_pci.h>
59 #include <dev/usb/controller/xhci.h>
60 #include <dev/usb/controller/xhcireg.h>
63 static device_probe_t xhci_pci_probe;
64 static device_attach_t xhci_pci_attach;
65 static device_detach_t xhci_pci_detach;
66 static usb_take_controller_t xhci_pci_take_controller;
68 static device_method_t xhci_device_methods[] = {
69 /* device interface */
70 DEVMETHOD(device_probe, xhci_pci_probe),
71 DEVMETHOD(device_attach, xhci_pci_attach),
72 DEVMETHOD(device_detach, xhci_pci_detach),
73 DEVMETHOD(device_suspend, bus_generic_suspend),
74 DEVMETHOD(device_resume, bus_generic_resume),
75 DEVMETHOD(device_shutdown, bus_generic_shutdown),
76 DEVMETHOD(usb_take_controller, xhci_pci_take_controller),
81 static driver_t xhci_driver = {
83 .methods = xhci_device_methods,
84 .size = sizeof(struct xhci_softc),
87 static devclass_t xhci_devclass;
89 DRIVER_MODULE(xhci, pci, xhci_driver, xhci_devclass, 0, 0);
90 MODULE_DEPEND(xhci, usb, 1, 1, 1);
94 xhci_pci_match(device_t self)
96 if ((pci_get_class(self) == PCIC_SERIALBUS)
97 && (pci_get_subclass(self) == PCIS_SERIALBUS_USB)
98 && (pci_get_progif(self) == PCIP_SERIALBUS_USB_XHCI)) {
99 return ("XHCI (generic) USB 3.0 controller");
101 return (NULL); /* dunno */
105 xhci_pci_probe(device_t self)
107 const char *desc = xhci_pci_match(self);
110 device_set_desc(self, desc);
118 xhci_pci_attach(device_t self)
120 struct xhci_softc *sc = device_get_softc(self);
124 /* XXX check for 64-bit capability */
126 if (xhci_init(sc, self)) {
127 device_printf(self, "Could not initialize softc\n");
131 pci_enable_busmaster(self);
133 rid = PCI_XHCI_CBMEM;
134 sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
136 if (!sc->sc_io_res) {
137 device_printf(self, "Could not map memory\n");
140 sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
141 sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
142 sc->sc_io_size = rman_get_size(sc->sc_io_res);
145 sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
146 RF_SHAREABLE | RF_ACTIVE);
147 if (sc->sc_irq_res == NULL) {
148 device_printf(self, "Could not allocate IRQ\n");
151 sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
152 if (sc->sc_bus.bdev == NULL) {
153 device_printf(self, "Could not add USB device\n");
156 device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
158 sprintf(sc->sc_vendor, "0x%04x", pci_get_vendor(self));
160 #if (__FreeBSD_version >= 700031)
161 err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
162 NULL, (driver_intr_t *)xhci_interrupt, sc, &sc->sc_intr_hdl);
164 err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
165 (driver_intr_t *)xhci_interrupt, sc, &sc->sc_intr_hdl);
168 device_printf(self, "Could not setup IRQ, err=%d\n", err);
169 sc->sc_intr_hdl = NULL;
172 xhci_pci_take_controller(self);
174 err = xhci_halt_controller(sc);
177 err = xhci_start_controller(sc);
180 err = device_probe_and_attach(sc->sc_bus.bdev);
183 device_printf(self, "XHCI halt/start/probe failed err=%d\n", err);
189 xhci_pci_detach(self);
194 xhci_pci_detach(device_t self)
196 struct xhci_softc *sc = device_get_softc(self);
199 if (sc->sc_bus.bdev != NULL) {
200 bdev = sc->sc_bus.bdev;
202 device_delete_child(self, bdev);
204 /* during module unload there are lots of children leftover */
205 device_delete_children(self);
207 pci_disable_busmaster(self);
209 if (sc->sc_irq_res && sc->sc_intr_hdl) {
211 xhci_halt_controller(sc);
213 bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
214 sc->sc_intr_hdl = NULL;
216 if (sc->sc_irq_res) {
217 bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res);
218 sc->sc_irq_res = NULL;
221 bus_release_resource(self, SYS_RES_MEMORY, PCI_XHCI_CBMEM,
223 sc->sc_io_res = NULL;
232 xhci_pci_take_controller(device_t self)
234 struct xhci_softc *sc = device_get_softc(self);
241 cparams = XREAD4(sc, capa, XHCI_HCSPARAMS0);
245 /* Synchronise with the BIOS if it owns the controller. */
246 for (eecp = XHCI_HCS0_XECP(cparams) << 2; eecp != 0 && XHCI_XECP_NEXT(eec);
247 eecp += XHCI_XECP_NEXT(eec) << 2) {
248 eec = XREAD4(sc, capa, eecp);
250 if (XHCI_XECP_ID(eec) != XHCI_ID_USB_LEGACY)
252 bios_sem = XREAD1(sc, capa, eecp +
256 device_printf(sc->sc_bus.bdev, "waiting for BIOS "
257 "to give up control\n");
258 XWRITE1(sc, capa, eecp +
259 XHCI_XECP_OS_SEM, 1);
262 bios_sem = XREAD1(sc, capa, eecp +
268 device_printf(sc->sc_bus.bdev,
269 "timed out waiting for BIOS\n");
272 usb_pause_mtx(NULL, hz / 100); /* wait 10ms */