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/module.h>
51 #include <sys/mutex.h>
52 #include <sys/condvar.h>
53 #include <sys/sysctl.h>
55 #include <sys/unistd.h>
56 #include <sys/callout.h>
57 #include <sys/malloc.h>
60 #include <dev/usb/usb.h>
61 #include <dev/usb/usbdi.h>
63 #include <dev/usb/usb_core.h>
64 #include <dev/usb/usb_busdma.h>
65 #include <dev/usb/usb_process.h>
66 #include <dev/usb/usb_util.h>
68 #include <dev/usb/usb_controller.h>
69 #include <dev/usb/usb_bus.h>
70 #include <dev/usb/controller/ehci.h>
71 #include <dev/usb/controller/ehcireg.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;
82 static int err_intr(void *arg);
84 static struct resource *irq_err;
87 /* EHCI HC regs start at this offset within USB range */
88 #define MV_USB_HOST_OFST 0x0100
90 #define USB_BRIDGE_INTR_CAUSE 0x210
91 #define USB_BRIDGE_INTR_MASK 0x214
93 #define MV_USB_ADDR_DECODE_ERR (1 << 0)
94 #define MV_USB_HOST_UNDERFLOW (1 << 1)
95 #define MV_USB_HOST_OVERFLOW (1 << 2)
96 #define MV_USB_DEVICE_UNDERFLOW (1 << 3)
99 ehci_mbus_probe(device_t self)
102 device_set_desc(self, EHCI_HC_DEVSTR);
104 return (BUS_PROBE_DEFAULT);
108 ehci_mbus_attach(device_t self)
110 ehci_softc_t *sc = device_get_softc(self);
111 bus_space_handle_t bsh;
115 /* initialise some bus fields */
116 sc->sc_bus.parent = self;
117 sc->sc_bus.devices = sc->sc_devices;
118 sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
120 /* get all DMA memory */
121 if (usb_bus_mem_alloc_all(&sc->sc_bus,
122 USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) {
127 sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid, RF_ACTIVE);
128 if (!sc->sc_io_res) {
129 device_printf(self, "Could not map memory\n");
132 sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
133 bsh = rman_get_bushandle(sc->sc_io_res);
134 sc->sc_io_size = rman_get_size(sc->sc_io_res) - MV_USB_HOST_OFST;
137 * Marvell EHCI host controller registers start at certain offset within
138 * the whole USB registers range, so create a subregion for the host
139 * mode configuration purposes.
141 if (bus_space_subregion(sc->sc_io_tag, bsh, MV_USB_HOST_OFST,
142 sc->sc_io_size, &sc->sc_io_hdl) != 0)
143 panic("%s: unable to subregion USB host registers",
144 device_get_name(self));
147 irq_err = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
148 RF_SHAREABLE | RF_ACTIVE);
149 if (irq_err == NULL) {
150 device_printf(self, "Could not allocate error irq\n");
151 ehci_mbus_detach(self);
156 * Notice: Marvell EHCI controller has TWO interrupt lines, so make sure to
157 * use the correct rid for the main one (controller interrupt) --
158 * refer to obio_devices[] for the right resource number to use here.
161 sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
162 RF_SHAREABLE | RF_ACTIVE);
163 if (sc->sc_irq_res == NULL) {
164 device_printf(self, "Could not allocate irq\n");
168 sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
169 if (!sc->sc_bus.bdev) {
170 device_printf(self, "Could not add USB device\n");
173 device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
174 device_set_desc(sc->sc_bus.bdev, EHCI_HC_DEVSTR);
176 sprintf(sc->sc_vendor, "Marvell");
178 err = bus_setup_intr(self, irq_err, INTR_FAST | INTR_TYPE_BIO,
179 err_intr, NULL, sc, &ih_err);
181 device_printf(self, "Could not setup error irq, %d\n", err);
186 EWRITE4(sc, USB_BRIDGE_INTR_MASK, MV_USB_ADDR_DECODE_ERR |
187 MV_USB_HOST_UNDERFLOW | MV_USB_HOST_OVERFLOW |
188 MV_USB_DEVICE_UNDERFLOW);
190 err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
191 NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
193 device_printf(self, "Could not setup irq, %d\n", err);
194 sc->sc_intr_hdl = NULL;
199 * Workaround for Marvell integrated EHCI controller: reset of
200 * the EHCI core clears the USBMODE register, which sets the core in
201 * an undefined state (neither host nor agent), so it needs to be set
202 * again for proper operation.
204 * Refer to errata document MV-S500832-00D.pdf (p. 5.24 GL USB-2) for
207 sc->sc_flags |= EHCI_SCFLG_SETMODE;
209 device_printf(self, "5.24 GL USB-2 workaround enabled\n");
211 /* XXX all MV chips need it? */
212 sc->sc_flags |= EHCI_SCFLG_FORCESPEED | EHCI_SCFLG_NORESTERM;
216 err = device_probe_and_attach(sc->sc_bus.bdev);
219 device_printf(self, "USB init failed err=%d\n", err);
225 ehci_mbus_detach(self);
230 ehci_mbus_detach(device_t self)
232 ehci_softc_t *sc = device_get_softc(self);
236 if (sc->sc_bus.bdev) {
237 bdev = sc->sc_bus.bdev;
239 device_delete_child(self, bdev);
241 /* during module unload there are lots of children leftover */
242 device_delete_all_children(self);
245 * disable interrupts that might have been switched on in ehci_init
248 EWRITE4(sc, EHCI_USBINTR, 0);
249 EWRITE4(sc, USB_BRIDGE_INTR_MASK, 0);
251 if (sc->sc_irq_res && sc->sc_intr_hdl) {
253 * only call ehci_detach() after ehci_init()
257 err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
260 /* XXX or should we panic? */
261 device_printf(self, "Could not tear down irq, %d\n",
263 sc->sc_intr_hdl = NULL;
265 if (irq_err && ih_err) {
266 err = bus_teardown_intr(self, irq_err, ih_err);
269 device_printf(self, "Could not tear down irq, %d\n",
274 bus_release_resource(self, SYS_RES_IRQ, 0, irq_err);
277 if (sc->sc_irq_res) {
278 bus_release_resource(self, SYS_RES_IRQ, 1, sc->sc_irq_res);
279 sc->sc_irq_res = NULL;
282 bus_release_resource(self, SYS_RES_MEMORY, 0,
284 sc->sc_io_res = NULL;
286 usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);
294 ehci_softc_t *sc = arg;
297 cause = EREAD4(sc, USB_BRIDGE_INTR_CAUSE);
299 printf("IRQ ERR: cause: 0x%08x\n", cause);
300 if (cause & MV_USB_ADDR_DECODE_ERR)
301 printf("IRQ ERR: Address decoding error\n");
302 if (cause & MV_USB_HOST_UNDERFLOW)
303 printf("IRQ ERR: USB Host Underflow\n");
304 if (cause & MV_USB_HOST_OVERFLOW)
305 printf("IRQ ERR: USB Host Overflow\n");
306 if (cause & MV_USB_DEVICE_UNDERFLOW)
307 printf("IRQ ERR: USB Device Underflow\n");
308 if (cause & ~(MV_USB_ADDR_DECODE_ERR | MV_USB_HOST_UNDERFLOW |
309 MV_USB_HOST_OVERFLOW | MV_USB_DEVICE_UNDERFLOW))
310 printf("IRQ ERR: Unknown error\n");
312 EWRITE4(sc, USB_BRIDGE_INTR_CAUSE, 0);
314 return (FILTER_HANDLED);
317 static device_method_t ehci_methods[] = {
318 /* Device interface */
319 DEVMETHOD(device_probe, ehci_mbus_probe),
320 DEVMETHOD(device_attach, ehci_mbus_attach),
321 DEVMETHOD(device_detach, ehci_mbus_detach),
322 DEVMETHOD(device_suspend, bus_generic_suspend),
323 DEVMETHOD(device_resume, bus_generic_resume),
324 DEVMETHOD(device_shutdown, bus_generic_shutdown),
329 static driver_t ehci_driver = {
331 .methods = ehci_methods,
332 .size = sizeof(ehci_softc_t),
335 static devclass_t ehci_devclass;
337 DRIVER_MODULE(ehci, mbus, ehci_driver, ehci_devclass, 0, 0);
338 MODULE_DEPEND(ehci, usb, 1, 1, 1);