Line data Source code
1 : /* $OpenBSD: uhci_pci.c,v 1.33 2014/05/16 18:17:03 mpi Exp $ */
2 : /* $NetBSD: uhci_pci.c,v 1.24 2002/10/02 16:51:58 thorpej Exp $ */
3 :
4 : /*
5 : * Copyright (c) 1998 The NetBSD Foundation, Inc.
6 : * All rights reserved.
7 : *
8 : * This code is derived from software contributed to The NetBSD Foundation
9 : * by Lennart Augustsson (lennart@augustsson.net) at
10 : * Carlstedt Research & Technology.
11 : *
12 : * Redistribution and use in source and binary forms, with or without
13 : * modification, are permitted provided that the following conditions
14 : * are met:
15 : * 1. Redistributions of source code must retain the above copyright
16 : * notice, this list of conditions and the following disclaimer.
17 : * 2. Redistributions in binary form must reproduce the above copyright
18 : * notice, this list of conditions and the following disclaimer in the
19 : * documentation and/or other materials provided with the distribution.
20 : *
21 : * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
22 : * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
23 : * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 : * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
25 : * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 : * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 : * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 : * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 : * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 : * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 : * POSSIBILITY OF SUCH DAMAGE.
32 : */
33 :
34 : #include <sys/param.h>
35 : #include <sys/systm.h>
36 : #include <sys/kernel.h>
37 : #include <sys/device.h>
38 : #include <sys/timeout.h>
39 : #include <sys/queue.h>
40 :
41 : #include <machine/bus.h>
42 :
43 : #include <dev/pci/pcivar.h>
44 :
45 : #include <dev/usb/usb.h>
46 : #include <dev/usb/usbdi.h>
47 : #include <dev/usb/usbdivar.h>
48 : #include <dev/usb/usb_mem.h>
49 :
50 : #include <dev/usb/uhcireg.h>
51 : #include <dev/usb/uhcivar.h>
52 :
53 : int uhci_pci_match(struct device *, void *, void *);
54 : void uhci_pci_attach(struct device *, struct device *, void *);
55 : void uhci_pci_attach_deferred(struct device *);
56 : int uhci_pci_detach(struct device *, int);
57 : int uhci_pci_activate(struct device *, int);
58 :
59 : struct uhci_pci_softc {
60 : struct uhci_softc sc;
61 : pci_chipset_tag_t sc_pc;
62 : pcitag_t sc_tag;
63 : void *sc_ih; /* interrupt vectoring */
64 : };
65 :
66 : struct cfattach uhci_pci_ca = {
67 : sizeof(struct uhci_pci_softc), uhci_pci_match, uhci_pci_attach,
68 : uhci_pci_detach, uhci_pci_activate
69 : };
70 :
71 : int
72 0 : uhci_pci_match(struct device *parent, void *match, void *aux)
73 : {
74 0 : struct pci_attach_args *pa = (struct pci_attach_args *) aux;
75 :
76 0 : if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SERIALBUS &&
77 0 : PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SERIALBUS_USB &&
78 0 : PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_UHCI)
79 0 : return (1);
80 :
81 0 : return (0);
82 0 : }
83 :
84 : int
85 0 : uhci_pci_activate(struct device *self, int act)
86 : {
87 0 : struct uhci_pci_softc *sc = (struct uhci_pci_softc *)self;
88 :
89 : /* On resume, set legacy support attribute and enable intrs */
90 0 : switch (act) {
91 : case DVACT_RESUME:
92 0 : pci_conf_write(sc->sc_pc, sc->sc_tag,
93 : PCI_LEGSUP, PCI_LEGSUP_USBPIRQDEN);
94 0 : bus_space_barrier(sc->sc.iot, sc->sc.ioh, 0, sc->sc.sc_size,
95 : BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE);
96 0 : bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0);
97 0 : break;
98 : }
99 :
100 0 : return uhci_activate(self, act);
101 : }
102 :
103 : void
104 0 : uhci_pci_attach(struct device *parent, struct device *self, void *aux)
105 : {
106 0 : struct uhci_pci_softc *sc = (struct uhci_pci_softc *)self;
107 0 : struct pci_attach_args *pa = (struct pci_attach_args *)aux;
108 0 : pci_chipset_tag_t pc = pa->pa_pc;
109 0 : pcitag_t tag = pa->pa_tag;
110 : char const *intrstr;
111 0 : pci_intr_handle_t ih;
112 : const char *vendor;
113 0 : char *devname = sc->sc.sc_bus.bdev.dv_xname;
114 : int s;
115 :
116 : /* Map I/O registers */
117 0 : if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0,
118 0 : &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size, 0)) {
119 0 : printf(": can't map i/o space\n");
120 0 : return;
121 : }
122 :
123 :
124 : /* Disable interrupts, so we don't get any spurious ones. */
125 0 : s = splhardusb();
126 0 : bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0);
127 :
128 0 : sc->sc_pc = pc;
129 0 : sc->sc_tag = tag;
130 0 : sc->sc.sc_bus.dmatag = pa->pa_dmat;
131 :
132 : /* Map and establish the interrupt. */
133 0 : if (pci_intr_map(pa, &ih)) {
134 0 : printf(": couldn't map interrupt\n");
135 0 : goto unmap_ret;
136 : }
137 0 : intrstr = pci_intr_string(pc, ih);
138 0 : sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, uhci_intr, sc,
139 : devname);
140 0 : if (sc->sc_ih == NULL) {
141 0 : printf(": couldn't establish interrupt");
142 0 : if (intrstr != NULL)
143 0 : printf(" at %s", intrstr);
144 0 : printf("\n");
145 0 : goto unmap_ret;
146 : }
147 0 : printf(": %s\n", intrstr);
148 :
149 : /* Set LEGSUP register to its default value. */
150 0 : pci_conf_write(pc, tag, PCI_LEGSUP, PCI_LEGSUP_USBPIRQDEN);
151 :
152 0 : switch(pci_conf_read(pc, tag, PCI_USBREV) & PCI_USBREV_MASK) {
153 : case PCI_USBREV_PRE_1_0:
154 0 : sc->sc.sc_bus.usbrev = USBREV_PRE_1_0;
155 0 : break;
156 : case PCI_USBREV_1_0:
157 0 : sc->sc.sc_bus.usbrev = USBREV_1_0;
158 0 : break;
159 : case PCI_USBREV_1_1:
160 0 : sc->sc.sc_bus.usbrev = USBREV_1_1;
161 0 : break;
162 : default:
163 0 : sc->sc.sc_bus.usbrev = USBREV_UNKNOWN;
164 0 : break;
165 : }
166 :
167 0 : uhci_run(&sc->sc, 0); /* stop the controller */
168 : /* disable interrupts */
169 0 : bus_space_barrier(sc->sc.iot, sc->sc.ioh, 0, sc->sc.sc_size,
170 : BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE);
171 0 : bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0);
172 :
173 : /* Figure out vendor for root hub descriptor. */
174 0 : vendor = pci_findvendor(pa->pa_id);
175 0 : sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id);
176 0 : if (vendor)
177 0 : strlcpy(sc->sc.sc_vendor, vendor, sizeof (sc->sc.sc_vendor));
178 : else
179 0 : snprintf(sc->sc.sc_vendor, sizeof (sc->sc.sc_vendor),
180 0 : "vendor 0x%04x", PCI_VENDOR(pa->pa_id));
181 :
182 0 : config_defer(self, uhci_pci_attach_deferred);
183 :
184 : /* Ignore interrupts for now */
185 0 : sc->sc.sc_bus.dying = 1;
186 :
187 0 : splx(s);
188 :
189 0 : return;
190 :
191 : unmap_ret:
192 0 : bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
193 0 : splx(s);
194 0 : }
195 :
196 : void
197 0 : uhci_pci_attach_deferred(struct device *self)
198 : {
199 0 : struct uhci_pci_softc *sc = (struct uhci_pci_softc *)self;
200 0 : char *devname = sc->sc.sc_bus.bdev.dv_xname;
201 : usbd_status r;
202 : int s;
203 :
204 0 : s = splhardusb();
205 :
206 0 : sc->sc.sc_bus.dying = 0;
207 0 : r = uhci_init(&sc->sc);
208 0 : if (r != USBD_NORMAL_COMPLETION) {
209 0 : printf("%s: init failed, error=%d\n", devname, r);
210 : goto unmap_ret;
211 : }
212 0 : splx(s);
213 :
214 : /* Attach usb device. */
215 0 : config_found(self, &sc->sc.sc_bus, usbctlprint);
216 0 : return;
217 :
218 : unmap_ret:
219 0 : bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
220 0 : pci_intr_disestablish(sc->sc_pc, sc->sc_ih);
221 0 : splx(s);
222 0 : }
223 :
224 : int
225 0 : uhci_pci_detach(struct device *self, int flags)
226 : {
227 0 : struct uhci_pci_softc *sc = (struct uhci_pci_softc *)self;
228 : int rv;
229 :
230 0 : rv = uhci_detach(self, flags);
231 0 : if (rv)
232 0 : return (rv);
233 0 : if (sc->sc_ih != NULL) {
234 0 : pci_intr_disestablish(sc->sc_pc, sc->sc_ih);
235 0 : sc->sc_ih = NULL;
236 0 : }
237 0 : if (sc->sc.sc_size) {
238 0 : bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
239 0 : sc->sc.sc_size = 0;
240 0 : }
241 :
242 0 : return (0);
243 0 : }
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