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>
62 static device_probe_t xhci_pci_probe;
63 static device_attach_t xhci_pci_attach;
64 static device_detach_t xhci_pci_detach;
65 static device_suspend_t xhci_pci_suspend;
66 static device_resume_t xhci_pci_resume;
67 static device_shutdown_t xhci_pci_shutdown;
68 static void xhci_pci_takecontroller(device_t);
70 static device_method_t xhci_device_methods[] = {
71 /* device interface */
72 DEVMETHOD(device_probe, xhci_pci_probe),
73 DEVMETHOD(device_attach, xhci_pci_attach),
74 DEVMETHOD(device_detach, xhci_pci_detach),
75 DEVMETHOD(device_suspend, xhci_pci_suspend),
76 DEVMETHOD(device_resume, xhci_pci_resume),
77 DEVMETHOD(device_shutdown, xhci_pci_shutdown),
79 DEVMETHOD(bus_print_child, bus_generic_print_child),
84 static driver_t xhci_driver = {
86 .methods = xhci_device_methods,
87 .size = sizeof(struct xhci_softc),
90 static devclass_t xhci_devclass;
92 DRIVER_MODULE(xhci, pci, xhci_driver, xhci_devclass, 0, 0);
93 MODULE_DEPEND(xhci, usb, 1, 1, 1);
96 xhci_pci_suspend(device_t self)
98 struct xhci_softc *sc = device_get_softc(self);
101 err = bus_generic_suspend(self);
109 xhci_pci_resume(device_t self)
111 struct xhci_softc *sc = device_get_softc(self);
113 xhci_pci_takecontroller(self);
116 bus_generic_resume(self);
122 xhci_pci_shutdown(device_t self)
124 struct xhci_softc *sc = device_get_softc(self);
127 err = bus_generic_shutdown(self);
136 xhci_pci_match(device_t self)
138 if ((pci_get_class(self) == PCIC_SERIALBUS)
139 && (pci_get_subclass(self) == PCIS_SERIALBUS_USB)
140 && (pci_get_progif(self) == PCIP_SERIALBUS_USB_XHCI)) {
141 return ("XHCI (generic) USB 3.0 controller");
143 return (NULL); /* dunno */
147 xhci_pci_probe(device_t self)
149 const char *desc = xhci_pci_match(self);
152 device_set_desc(self, desc);
160 xhci_pci_attach(device_t self)
162 struct xhci_softc *sc = device_get_softc(self);
166 /* XXX check for 64-bit capability */
168 if (xhci_init(sc, self)) {
169 device_printf(self, "Could not initialize softc\n");
173 pci_enable_busmaster(self);
175 rid = PCI_XHCI_CBMEM;
176 sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
178 if (!sc->sc_io_res) {
179 device_printf(self, "Could not map memory\n");
182 sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
183 sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
184 sc->sc_io_size = rman_get_size(sc->sc_io_res);
187 sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
188 RF_SHAREABLE | RF_ACTIVE);
189 if (sc->sc_irq_res == NULL) {
190 device_printf(self, "Could not allocate IRQ\n");
193 sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
194 if (sc->sc_bus.bdev == NULL) {
195 device_printf(self, "Could not add USB device\n");
198 device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
200 sprintf(sc->sc_vendor, "0x%04x", pci_get_vendor(self));
202 #if (__FreeBSD_version >= 700031)
203 err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
204 NULL, (driver_intr_t *)xhci_interrupt, sc, &sc->sc_intr_hdl);
206 err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
207 (driver_intr_t *)xhci_interrupt, sc, &sc->sc_intr_hdl);
210 device_printf(self, "Could not setup IRQ, err=%d\n", err);
211 sc->sc_intr_hdl = NULL;
214 xhci_pci_takecontroller(self);
216 err = xhci_halt_controller(sc);
219 err = xhci_start_controller(sc);
222 err = device_probe_and_attach(sc->sc_bus.bdev);
225 device_printf(self, "XHCI halt/start/probe failed err=%d\n", err);
231 xhci_pci_detach(self);
236 xhci_pci_detach(device_t self)
238 struct xhci_softc *sc = device_get_softc(self);
241 if (sc->sc_bus.bdev != NULL) {
242 bdev = sc->sc_bus.bdev;
244 device_delete_child(self, bdev);
246 /* during module unload there are lots of children leftover */
247 device_delete_all_children(self);
249 pci_disable_busmaster(self);
251 if (sc->sc_irq_res && sc->sc_intr_hdl) {
253 xhci_halt_controller(sc);
255 bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
256 sc->sc_intr_hdl = NULL;
258 if (sc->sc_irq_res) {
259 bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res);
260 sc->sc_irq_res = NULL;
263 bus_release_resource(self, SYS_RES_MEMORY, PCI_XHCI_CBMEM,
265 sc->sc_io_res = NULL;
274 xhci_pci_takecontroller(device_t self)
276 struct xhci_softc *sc = device_get_softc(self);
283 cparams = XREAD4(sc, capa, XHCI_HCSPARAMS0);
287 /* Synchronise with the BIOS if it owns the controller. */
288 for (eecp = XHCI_HCS0_XECP(cparams) << 2; eecp != 0 && XHCI_XECP_NEXT(eec);
289 eecp += XHCI_XECP_NEXT(eec) << 2) {
290 eec = XREAD4(sc, capa, eecp);
292 if (XHCI_XECP_ID(eec) != XHCI_ID_USB_LEGACY)
294 bios_sem = XREAD1(sc, capa, eecp +
298 device_printf(sc->sc_bus.bdev, "waiting for BIOS "
299 "to give up control\n");
300 XWRITE1(sc, capa, eecp +
301 XHCI_XECP_OS_SEM, 1);
304 bios_sem = XREAD1(sc, capa, eecp +
310 device_printf(sc->sc_bus.bdev,
311 "timed out waiting for BIOS\n");
314 usb_pause_mtx(NULL, hz / 100); /* wait 10ms */