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[FreeBSD/releng/9.2.git] / sys / dev / usb / controller / xhci_pci.c
1 /*-
2  * Copyright (c) 2010 Hans Petter Selasky. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
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.
12  *
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
23  * SUCH DAMAGE.
24  */
25
26 #include <sys/cdefs.h>
27 __FBSDID("$FreeBSD$");
28
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>
36 #include <sys/bus.h>
37 #include <sys/module.h>
38 #include <sys/lock.h>
39 #include <sys/mutex.h>
40 #include <sys/condvar.h>
41 #include <sys/sysctl.h>
42 #include <sys/sx.h>
43 #include <sys/unistd.h>
44 #include <sys/callout.h>
45 #include <sys/malloc.h>
46 #include <sys/priv.h>
47
48 #include <dev/usb/usb.h>
49 #include <dev/usb/usbdi.h>
50
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>
55
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>
61 #include "usb_if.h"
62
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;
67
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),
77
78         DEVMETHOD_END
79 };
80
81 static driver_t xhci_driver = {
82         .name = "xhci",
83         .methods = xhci_device_methods,
84         .size = sizeof(struct xhci_softc),
85 };
86
87 static devclass_t xhci_devclass;
88
89 DRIVER_MODULE(xhci, pci, xhci_driver, xhci_devclass, 0, 0);
90 MODULE_DEPEND(xhci, usb, 1, 1, 1);
91
92
93 static const char *
94 xhci_pci_match(device_t self)
95 {
96         uint32_t device_id = pci_get_devid(self);
97
98         switch (device_id) {
99         case 0x01941033:
100                 return ("NEC uPD720200 USB 3.0 controller");
101
102         case 0x10421b21:
103                 return ("ASMedia ASM1042 USB 3.0 controller");
104
105         case 0x1e318086:
106                 return ("Intel Panther Point USB 3.0 controller");
107         case 0x8c318086:
108                 return ("Intel Lynx Point USB 3.0 controller");
109
110         default:
111                 break;
112         }
113
114         if ((pci_get_class(self) == PCIC_SERIALBUS)
115             && (pci_get_subclass(self) == PCIS_SERIALBUS_USB)
116             && (pci_get_progif(self) == PCIP_SERIALBUS_USB_XHCI)) {
117                 return ("XHCI (generic) USB 3.0 controller");
118         }
119         return (NULL);                  /* dunno */
120 }
121
122 static int
123 xhci_pci_probe(device_t self)
124 {
125         const char *desc = xhci_pci_match(self);
126
127         if (desc) {
128                 device_set_desc(self, desc);
129                 return (0);
130         } else {
131                 return (ENXIO);
132         }
133 }
134
135 static int xhci_use_msi = 1;
136 TUNABLE_INT("hw.usb.xhci.msi", &xhci_use_msi);
137
138 static int
139 xhci_pci_attach(device_t self)
140 {
141         struct xhci_softc *sc = device_get_softc(self);
142         int count, err, rid;
143
144         /* XXX check for 64-bit capability */
145
146         if (xhci_init(sc, self)) {
147                 device_printf(self, "Could not initialize softc\n");
148                 goto error;
149         }
150
151         pci_enable_busmaster(self);
152
153         rid = PCI_XHCI_CBMEM;
154         sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
155             RF_ACTIVE);
156         if (!sc->sc_io_res) {
157                 device_printf(self, "Could not map memory\n");
158                 goto error;
159         }
160         sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
161         sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
162         sc->sc_io_size = rman_get_size(sc->sc_io_res);
163
164         sc->sc_irq_rid = 0;
165         if (xhci_use_msi) {
166                 count = pci_msi_count(self);
167                 if (count >= 1) {
168                         count = 1;
169                         if (pci_alloc_msi(self, &count) == 0) {
170                                 if (bootverbose)
171                                         device_printf(self, "MSI enabled\n");
172                                 sc->sc_irq_rid = 1;
173                         }
174                 }
175         }
176         sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ,
177             &sc->sc_irq_rid, RF_SHAREABLE | RF_ACTIVE);
178         if (sc->sc_irq_res == NULL) {
179                 device_printf(self, "Could not allocate IRQ\n");
180                 goto error;
181         }
182         sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
183         if (sc->sc_bus.bdev == NULL) {
184                 device_printf(self, "Could not add USB device\n");
185                 goto error;
186         }
187         device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
188
189         sprintf(sc->sc_vendor, "0x%04x", pci_get_vendor(self));
190
191 #if (__FreeBSD_version >= 700031)
192         err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
193             NULL, (driver_intr_t *)xhci_interrupt, sc, &sc->sc_intr_hdl);
194 #else
195         err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
196             (driver_intr_t *)xhci_interrupt, sc, &sc->sc_intr_hdl);
197 #endif
198         if (err) {
199                 device_printf(self, "Could not setup IRQ, err=%d\n", err);
200                 sc->sc_intr_hdl = NULL;
201                 goto error;
202         }
203         xhci_pci_take_controller(self);
204
205         err = xhci_halt_controller(sc);
206
207         if (err == 0)
208                 err = xhci_start_controller(sc);
209
210         if (err == 0)
211                 err = device_probe_and_attach(sc->sc_bus.bdev);
212
213         if (err) {
214                 device_printf(self, "XHCI halt/start/probe failed err=%d\n", err);
215                 goto error;
216         }
217         return (0);
218
219 error:
220         xhci_pci_detach(self);
221         return (ENXIO);
222 }
223
224 static int
225 xhci_pci_detach(device_t self)
226 {
227         struct xhci_softc *sc = device_get_softc(self);
228         device_t bdev;
229
230         if (sc->sc_bus.bdev != NULL) {
231                 bdev = sc->sc_bus.bdev;
232                 device_detach(bdev);
233                 device_delete_child(self, bdev);
234         }
235         /* during module unload there are lots of children leftover */
236         device_delete_children(self);
237
238         pci_disable_busmaster(self);
239
240         if (sc->sc_irq_res && sc->sc_intr_hdl) {
241
242                 xhci_halt_controller(sc);
243
244                 bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
245                 sc->sc_intr_hdl = NULL;
246         }
247         if (sc->sc_irq_res) {
248                 if (sc->sc_irq_rid == 1)
249                         pci_release_msi(self);
250                 bus_release_resource(self, SYS_RES_IRQ, sc->sc_irq_rid,
251                     sc->sc_irq_res);
252                 sc->sc_irq_res = NULL;
253         }
254         if (sc->sc_io_res) {
255                 bus_release_resource(self, SYS_RES_MEMORY, PCI_XHCI_CBMEM,
256                     sc->sc_io_res);
257                 sc->sc_io_res = NULL;
258         }
259
260         xhci_uninit(sc);
261
262         return (0);
263 }
264
265 static int
266 xhci_pci_take_controller(device_t self)
267 {
268         struct xhci_softc *sc = device_get_softc(self);
269         uint32_t device_id = pci_get_devid(self);
270         uint32_t cparams;
271         uint32_t eecp;
272         uint32_t eec;
273         uint16_t to;
274         uint8_t bios_sem;
275
276         cparams = XREAD4(sc, capa, XHCI_HCSPARAMS0);
277
278         eec = -1;
279
280         /* Synchronise with the BIOS if it owns the controller. */
281         for (eecp = XHCI_HCS0_XECP(cparams) << 2; eecp != 0 && XHCI_XECP_NEXT(eec);
282             eecp += XHCI_XECP_NEXT(eec) << 2) {
283                 eec = XREAD4(sc, capa, eecp);
284
285                 if (XHCI_XECP_ID(eec) != XHCI_ID_USB_LEGACY)
286                         continue;
287                 bios_sem = XREAD1(sc, capa, eecp +
288                     XHCI_XECP_BIOS_SEM);
289                 if (bios_sem == 0)
290                         continue;
291                 device_printf(sc->sc_bus.bdev, "waiting for BIOS "
292                     "to give up control\n");
293                 XWRITE1(sc, capa, eecp +
294                     XHCI_XECP_OS_SEM, 1);
295                 to = 500;
296                 while (1) {
297                         bios_sem = XREAD1(sc, capa, eecp +
298                             XHCI_XECP_BIOS_SEM);
299                         if (bios_sem == 0)
300                                 break;
301
302                         if (--to == 0) {
303                                 device_printf(sc->sc_bus.bdev,
304                                     "timed out waiting for BIOS\n");
305                                 break;
306                         }
307                         usb_pause_mtx(NULL, hz / 100);  /* wait 10ms */
308                 }
309         }
310
311         /* On Intel chipsets reroute ports from EHCI to XHCI controller. */
312         if (device_id == 0x1e318086 /* Panther Point */ ||
313             device_id == 0x8c318086 /* Lynx Point */) {
314                 uint32_t temp = xhci_get_port_route();
315                 pci_write_config(self, PCI_XHCI_INTEL_USB3_PSSEN, temp, 4);
316                 pci_write_config(self, PCI_XHCI_INTEL_XUSB2PR, temp, 4);
317         }
318         return (0);
319 }