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 <sys/stdint.h>
42 #include <sys/stddef.h>
43 #include <sys/param.h>
44 #include <sys/queue.h>
45 #include <sys/types.h>
46 #include <sys/systm.h>
47 #include <sys/kernel.h>
49 #include <sys/linker_set.h>
50 #include <sys/module.h>
52 #include <sys/mutex.h>
53 #include <sys/condvar.h>
54 #include <sys/sysctl.h>
56 #include <sys/unistd.h>
57 #include <sys/callout.h>
58 #include <sys/malloc.h>
61 #include <dev/usb/usb.h>
62 #include <dev/usb/usbdi.h>
64 #include <dev/usb/usb_core.h>
65 #include <dev/usb/usb_busdma.h>
66 #include <dev/usb/usb_process.h>
67 #include <dev/usb/usb_util.h>
69 #include <dev/usb/usb_controller.h>
70 #include <dev/usb/usb_bus.h>
71 #include <dev/usb/controller/ehci.h>
73 #include <arm/mv/mvreg.h>
74 #include <arm/mv/mvvar.h>
76 #define EHCI_VENDORID_MRVL 0x1286
77 #define EHCI_HC_DEVSTR "Marvell Integrated USB 2.0 controller"
79 static device_attach_t ehci_mbus_attach;
80 static device_detach_t ehci_mbus_detach;
81 static device_shutdown_t ehci_mbus_shutdown;
82 static device_suspend_t ehci_mbus_suspend;
83 static device_resume_t ehci_mbus_resume;
85 static int err_intr(void *arg);
87 static struct resource *irq_err;
90 /* EHCI HC regs start at this offset within USB range */
91 #define MV_USB_HOST_OFST 0x0100
93 #define USB_BRIDGE_INTR_CAUSE 0x210
94 #define USB_BRIDGE_INTR_MASK 0x214
96 #define MV_USB_ADDR_DECODE_ERR (1 << 0)
97 #define MV_USB_HOST_UNDERFLOW (1 << 1)
98 #define MV_USB_HOST_OVERFLOW (1 << 2)
99 #define MV_USB_DEVICE_UNDERFLOW (1 << 3)
102 ehci_mbus_suspend(device_t self)
104 ehci_softc_t *sc = device_get_softc(self);
107 err = bus_generic_suspend(self);
115 ehci_mbus_resume(device_t self)
117 ehci_softc_t *sc = device_get_softc(self);
121 bus_generic_resume(self);
127 ehci_mbus_shutdown(device_t self)
129 ehci_softc_t *sc = device_get_softc(self);
132 err = bus_generic_shutdown(self);
141 ehci_mbus_probe(device_t self)
144 device_set_desc(self, EHCI_HC_DEVSTR);
146 return (BUS_PROBE_DEFAULT);
150 ehci_mbus_attach(device_t self)
152 ehci_softc_t *sc = device_get_softc(self);
153 bus_space_handle_t bsh;
157 /* initialise some bus fields */
158 sc->sc_bus.parent = self;
159 sc->sc_bus.devices = sc->sc_devices;
160 sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
162 /* get all DMA memory */
163 if (usb_bus_mem_alloc_all(&sc->sc_bus,
164 USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) {
168 sc->sc_bus.usbrev = USB_REV_2_0;
171 sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid, RF_ACTIVE);
172 if (!sc->sc_io_res) {
173 device_printf(self, "Could not map memory\n");
176 sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
177 bsh = rman_get_bushandle(sc->sc_io_res);
178 sc->sc_io_size = rman_get_size(sc->sc_io_res) - MV_USB_HOST_OFST;
181 * Marvell EHCI host controller registers start at certain offset within
182 * the whole USB registers range, so create a subregion for the host
183 * mode configuration purposes.
185 if (bus_space_subregion(sc->sc_io_tag, bsh, MV_USB_HOST_OFST,
186 sc->sc_io_size, &sc->sc_io_hdl) != 0)
187 panic("%s: unable to subregion USB host registers",
188 device_get_name(self));
191 irq_err = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
192 RF_SHAREABLE | RF_ACTIVE);
193 if (irq_err == NULL) {
194 device_printf(self, "Could not allocate error irq\n");
195 ehci_mbus_detach(self);
200 * Notice: Marvell EHCI controller has TWO interrupt lines, so make sure to
201 * use the correct rid for the main one (controller interrupt) --
202 * refer to obio_devices[] for the right resource number to use here.
205 sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
206 RF_SHAREABLE | RF_ACTIVE);
207 if (sc->sc_irq_res == NULL) {
208 device_printf(self, "Could not allocate irq\n");
212 sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
213 if (!sc->sc_bus.bdev) {
214 device_printf(self, "Could not add USB device\n");
217 device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
218 device_set_desc(sc->sc_bus.bdev, EHCI_HC_DEVSTR);
220 sprintf(sc->sc_vendor, "Marvell");
222 err = bus_setup_intr(self, irq_err, INTR_FAST | INTR_TYPE_BIO,
223 err_intr, NULL, sc, &ih_err);
225 device_printf(self, "Could not setup error irq, %d\n", err);
230 EWRITE4(sc, USB_BRIDGE_INTR_MASK, MV_USB_ADDR_DECODE_ERR |
231 MV_USB_HOST_UNDERFLOW | MV_USB_HOST_OVERFLOW |
232 MV_USB_DEVICE_UNDERFLOW);
234 err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
235 NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
237 device_printf(self, "Could not setup irq, %d\n", err);
238 sc->sc_intr_hdl = NULL;
243 * Workaround for Marvell integrated EHCI controller: reset of
244 * the EHCI core clears the USBMODE register, which sets the core in
245 * an undefined state (neither host nor agent), so it needs to be set
246 * again for proper operation.
248 * Refer to errata document MV-S500832-00D.pdf (p. 5.24 GL USB-2) for
251 sc->sc_flags |= EHCI_SCFLG_SETMODE;
253 device_printf(self, "5.24 GL USB-2 workaround enabled\n");
255 /* XXX all MV chips need it? */
256 sc->sc_flags |= EHCI_SCFLG_FORCESPEED | EHCI_SCFLG_NORESTERM;
260 err = device_probe_and_attach(sc->sc_bus.bdev);
263 device_printf(self, "USB init failed err=%d\n", err);
269 ehci_mbus_detach(self);
274 ehci_mbus_detach(device_t self)
276 ehci_softc_t *sc = device_get_softc(self);
280 if (sc->sc_bus.bdev) {
281 bdev = sc->sc_bus.bdev;
283 device_delete_child(self, bdev);
285 /* during module unload there are lots of children leftover */
286 device_delete_all_children(self);
289 * disable interrupts that might have been switched on in ehci_init
292 EWRITE4(sc, EHCI_USBINTR, 0);
293 EWRITE4(sc, USB_BRIDGE_INTR_MASK, 0);
295 if (sc->sc_irq_res && sc->sc_intr_hdl) {
297 * only call ehci_detach() after ehci_init()
301 err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
304 /* XXX or should we panic? */
305 device_printf(self, "Could not tear down irq, %d\n",
307 sc->sc_intr_hdl = NULL;
309 if (irq_err && ih_err) {
310 err = bus_teardown_intr(self, irq_err, ih_err);
313 device_printf(self, "Could not tear down irq, %d\n",
318 bus_release_resource(self, SYS_RES_IRQ, 0, irq_err);
321 if (sc->sc_irq_res) {
322 bus_release_resource(self, SYS_RES_IRQ, 1, sc->sc_irq_res);
323 sc->sc_irq_res = NULL;
326 bus_release_resource(self, SYS_RES_MEMORY, 0,
328 sc->sc_io_res = NULL;
330 usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);
338 ehci_softc_t *sc = arg;
341 cause = EREAD4(sc, USB_BRIDGE_INTR_CAUSE);
343 printf("IRQ ERR: cause: 0x%08x\n", cause);
344 if (cause & MV_USB_ADDR_DECODE_ERR)
345 printf("IRQ ERR: Address decoding error\n");
346 if (cause & MV_USB_HOST_UNDERFLOW)
347 printf("IRQ ERR: USB Host Underflow\n");
348 if (cause & MV_USB_HOST_OVERFLOW)
349 printf("IRQ ERR: USB Host Overflow\n");
350 if (cause & MV_USB_DEVICE_UNDERFLOW)
351 printf("IRQ ERR: USB Device Underflow\n");
352 if (cause & ~(MV_USB_ADDR_DECODE_ERR | MV_USB_HOST_UNDERFLOW |
353 MV_USB_HOST_OVERFLOW | MV_USB_DEVICE_UNDERFLOW))
354 printf("IRQ ERR: Unknown error\n");
356 EWRITE4(sc, USB_BRIDGE_INTR_CAUSE, 0);
358 return (FILTER_HANDLED);
361 static device_method_t ehci_methods[] = {
362 /* Device interface */
363 DEVMETHOD(device_probe, ehci_mbus_probe),
364 DEVMETHOD(device_attach, ehci_mbus_attach),
365 DEVMETHOD(device_detach, ehci_mbus_detach),
366 DEVMETHOD(device_suspend, ehci_mbus_suspend),
367 DEVMETHOD(device_resume, ehci_mbus_resume),
368 DEVMETHOD(device_shutdown, ehci_mbus_shutdown),
371 DEVMETHOD(bus_print_child, bus_generic_print_child),
376 static driver_t ehci_driver = {
379 sizeof(ehci_softc_t),
382 static devclass_t ehci_devclass;
384 DRIVER_MODULE(ehci, mbus, ehci_driver, ehci_devclass, 0, 0);
385 MODULE_DEPEND(ehci, usb, 1, 1, 1);