2 * Copyright (C) 2008 MARVELL INTERNATIONAL LTD.
5 * Developed by Semihalf.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of MARVELL nor the names of contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * MBus attachment driver for the USB Enhanced Host Controller.
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
41 #include <dev/usb/usb_mfunc.h>
42 #include <dev/usb/usb.h>
44 #include <dev/usb/usb_core.h>
45 #include <dev/usb/usb_busdma.h>
46 #include <dev/usb/usb_process.h>
47 #include <dev/usb/usb_sw_transfer.h>
48 #include <dev/usb/usb_util.h>
50 #include <dev/usb/usb_controller.h>
51 #include <dev/usb/usb_bus.h>
52 #include <dev/usb/controller/ehci.h>
54 #include <arm/mv/mvreg.h>
55 #include <arm/mv/mvvar.h>
57 #define EHCI_VENDORID_MRVL 0x1286
58 #define EHCI_HC_DEVSTR "Marvell Integrated USB 2.0 controller"
60 static device_attach_t ehci_mbus_attach;
61 static device_detach_t ehci_mbus_detach;
62 static device_shutdown_t ehci_mbus_shutdown;
63 static device_suspend_t ehci_mbus_suspend;
64 static device_resume_t ehci_mbus_resume;
66 static int err_intr(void *arg);
68 static struct resource *irq_err;
71 #define USB_BRIDGE_INTR_CAUSE 0x210
72 #define USB_BRIDGE_INTR_MASK 0x214
74 #define MV_USB_ADDR_DECODE_ERR (1 << 0)
75 #define MV_USB_HOST_UNDERFLOW (1 << 1)
76 #define MV_USB_HOST_OVERFLOW (1 << 2)
77 #define MV_USB_DEVICE_UNDERFLOW (1 << 3)
80 ehci_mbus_suspend(device_t self)
82 ehci_softc_t *sc = device_get_softc(self);
85 err = bus_generic_suspend(self);
93 ehci_mbus_resume(device_t self)
95 ehci_softc_t *sc = device_get_softc(self);
99 bus_generic_resume(self);
105 ehci_mbus_shutdown(device_t self)
107 ehci_softc_t *sc = device_get_softc(self);
110 err = bus_generic_shutdown(self);
119 ehci_mbus_probe(device_t self)
122 device_set_desc(self, EHCI_HC_DEVSTR);
124 return (BUS_PROBE_DEFAULT);
128 ehci_mbus_attach(device_t self)
130 ehci_softc_t *sc = device_get_softc(self);
131 bus_space_handle_t bsh;
135 /* initialise some bus fields */
136 sc->sc_bus.parent = self;
137 sc->sc_bus.devices = sc->sc_devices;
138 sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
140 /* get all DMA memory */
141 if (usb2_bus_mem_alloc_all(&sc->sc_bus,
142 USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) {
146 sc->sc_bus.usbrev = USB_REV_2_0;
149 sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid, RF_ACTIVE);
150 if (!sc->sc_io_res) {
151 device_printf(self, "Could not map memory\n");
154 sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
155 bsh = rman_get_bushandle(sc->sc_io_res);
156 sc->sc_io_size = MV_USB_SIZE - MV_USB_HOST_OFST;
159 * Marvell EHCI host controller registers start at certain offset within
160 * the whole USB registers range, so create a subregion for the host
161 * mode configuration purposes.
163 if (bus_space_subregion(sc->sc_io_tag, bsh, MV_USB_HOST_OFST,
164 sc->sc_io_size, &sc->sc_io_hdl) != 0)
165 panic("%s: unable to subregion USB host registers",
166 device_get_name(self));
169 irq_err = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
170 RF_SHAREABLE | RF_ACTIVE);
171 if (irq_err == NULL) {
172 device_printf(self, "Could not allocate error irq\n");
173 ehci_mbus_detach(self);
178 * Notice: Marvell EHCI controller has TWO interrupt lines, so make sure to
179 * use the correct rid for the main one (controller interrupt) --
180 * refer to obio_devices[] for the right resource number to use here.
183 sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
184 RF_SHAREABLE | RF_ACTIVE);
185 if (sc->sc_irq_res == NULL) {
186 device_printf(self, "Could not allocate irq\n");
190 sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
191 if (!sc->sc_bus.bdev) {
192 device_printf(self, "Could not add USB device\n");
195 device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
196 device_set_desc(sc->sc_bus.bdev, EHCI_HC_DEVSTR);
198 sprintf(sc->sc_vendor, "Marvell");
200 err = bus_setup_intr(self, irq_err, INTR_FAST | INTR_TYPE_BIO,
201 err_intr, NULL, sc, &ih_err);
203 device_printf(self, "Could not setup error irq, %d\n", err);
208 EWRITE4(sc, USB_BRIDGE_INTR_MASK, MV_USB_ADDR_DECODE_ERR |
209 MV_USB_HOST_UNDERFLOW | MV_USB_HOST_OVERFLOW |
210 MV_USB_DEVICE_UNDERFLOW);
212 err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
213 NULL, (void *)(void *)ehci_interrupt, sc, &sc->sc_intr_hdl);
215 device_printf(self, "Could not setup irq, %d\n", err);
216 sc->sc_intr_hdl = NULL;
221 * Workaround for Marvell integrated EHCI controller: reset of
222 * the EHCI core clears the USBMODE register, which sets the core in
223 * an undefined state (neither host nor agent), so it needs to be set
224 * again for proper operation.
226 * Refer to errata document MV-S500832-00D.pdf (p. 5.24 GL USB-2) for
229 sc->sc_flags |= EHCI_SCFLG_SETMODE;
231 device_printf(self, "5.24 GL USB-2 workaround enabled\n");
233 /* XXX all MV chips need it? */
234 sc->sc_flags |= EHCI_SCFLG_FORCESPEED | EHCI_SCFLG_NORESTERM;
238 err = device_probe_and_attach(sc->sc_bus.bdev);
241 device_printf(self, "USB init failed err=%d\n", err);
247 ehci_mbus_detach(self);
252 ehci_mbus_detach(device_t self)
254 ehci_softc_t *sc = device_get_softc(self);
258 if (sc->sc_bus.bdev) {
259 bdev = sc->sc_bus.bdev;
261 device_delete_child(self, bdev);
263 /* during module unload there are lots of children leftover */
264 device_delete_all_children(self);
267 * disable interrupts that might have been switched on in ehci_init
270 EWRITE4(sc, EHCI_USBINTR, 0);
271 EWRITE4(sc, USB_BRIDGE_INTR_MASK, 0);
273 if (sc->sc_irq_res && sc->sc_intr_hdl) {
275 * only call ehci_detach() after ehci_init()
279 err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
282 /* XXX or should we panic? */
283 device_printf(self, "Could not tear down irq, %d\n",
285 sc->sc_intr_hdl = NULL;
287 if (irq_err && ih_err) {
288 err = bus_teardown_intr(self, irq_err, ih_err);
291 device_printf(self, "Could not tear down irq, %d\n",
296 bus_release_resource(self, SYS_RES_IRQ, 0, irq_err);
299 if (sc->sc_irq_res) {
300 bus_release_resource(self, SYS_RES_IRQ, 1, sc->sc_irq_res);
301 sc->sc_irq_res = NULL;
304 bus_release_resource(self, SYS_RES_MEMORY, 0,
306 sc->sc_io_res = NULL;
308 usb2_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);
316 ehci_softc_t *sc = arg;
319 cause = EREAD4(sc, USB_BRIDGE_INTR_CAUSE);
321 printf("IRQ ERR: cause: 0x%08x\n", cause);
322 if (cause & MV_USB_ADDR_DECODE_ERR)
323 printf("IRQ ERR: Address decoding error\n");
324 if (cause & MV_USB_HOST_UNDERFLOW)
325 printf("IRQ ERR: USB Host Underflow\n");
326 if (cause & MV_USB_HOST_OVERFLOW)
327 printf("IRQ ERR: USB Host Overflow\n");
328 if (cause & MV_USB_DEVICE_UNDERFLOW)
329 printf("IRQ ERR: USB Device Underflow\n");
330 if (cause & ~(MV_USB_ADDR_DECODE_ERR | MV_USB_HOST_UNDERFLOW |
331 MV_USB_HOST_OVERFLOW | MV_USB_DEVICE_UNDERFLOW))
332 printf("IRQ ERR: Unknown error\n");
334 EWRITE4(sc, USB_BRIDGE_INTR_CAUSE, 0);
336 return (FILTER_HANDLED);
339 static device_method_t ehci_methods[] = {
340 /* Device interface */
341 DEVMETHOD(device_probe, ehci_mbus_probe),
342 DEVMETHOD(device_attach, ehci_mbus_attach),
343 DEVMETHOD(device_detach, ehci_mbus_detach),
344 DEVMETHOD(device_suspend, ehci_mbus_suspend),
345 DEVMETHOD(device_resume, ehci_mbus_resume),
346 DEVMETHOD(device_shutdown, ehci_mbus_shutdown),
349 DEVMETHOD(bus_print_child, bus_generic_print_child),
354 static driver_t ehci_driver = {
357 sizeof(ehci_softc_t),
360 static devclass_t ehci_devclass;
362 DRIVER_MODULE(ehci, mbus, ehci_driver, ehci_devclass, 0, 0);
363 MODULE_DEPEND(ehci, usb, 1, 1, 1);