FreeBSD/Linux Kernel Cross Reference
sys/dev/mfi/mfi_pci.c
1 /*-
2 * Copyright (c) 2006 IronPort Systems
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26 /*-
27 * Copyright (c) 2007 LSI Corp.
28 * Copyright (c) 2007 Rajesh Prabhakaran.
29 * All rights reserved.
30 *
31 * Redistribution and use in source and binary forms, with or without
32 * modification, are permitted provided that the following conditions
33 * are met:
34 * 1. Redistributions of source code must retain the above copyright
35 * notice, this list of conditions and the following disclaimer.
36 * 2. Redistributions in binary form must reproduce the above copyright
37 * notice, this list of conditions and the following disclaimer in the
38 * documentation and/or other materials provided with the distribution.
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50 * SUCH DAMAGE.
51 */
52
53 #include <sys/cdefs.h>
54 __FBSDID("$FreeBSD: releng/6.4/sys/dev/mfi/mfi_pci.c 179847 2008-06-17 17:04:38Z ambrisko $");
55
56 /* PCI/PCI-X/PCIe bus interface for the LSI MegaSAS controllers */
57
58 #include "opt_mfi.h"
59
60 #include <sys/param.h>
61 #include <sys/systm.h>
62 #include <sys/kernel.h>
63 #include <sys/selinfo.h>
64 #include <sys/module.h>
65 #include <sys/bus.h>
66 #include <sys/conf.h>
67 #include <sys/bio.h>
68 #include <sys/malloc.h>
69 #include <sys/uio.h>
70
71 #include <machine/bus.h>
72 #include <machine/resource.h>
73 #include <sys/rman.h>
74
75 #include <dev/pci/pcireg.h>
76 #include <dev/pci/pcivar.h>
77
78 #include <dev/mfi/mfireg.h>
79 #include <dev/mfi/mfi_ioctl.h>
80 #include <dev/mfi/mfivar.h>
81
82 static int mfi_pci_probe(device_t);
83 static int mfi_pci_attach(device_t);
84 static int mfi_pci_detach(device_t);
85 static int mfi_pci_suspend(device_t);
86 static int mfi_pci_resume(device_t);
87 static void mfi_pci_free(struct mfi_softc *);
88
89 static device_method_t mfi_methods[] = {
90 DEVMETHOD(device_probe, mfi_pci_probe),
91 DEVMETHOD(device_attach, mfi_pci_attach),
92 DEVMETHOD(device_detach, mfi_pci_detach),
93 DEVMETHOD(device_suspend, mfi_pci_suspend),
94 DEVMETHOD(device_resume, mfi_pci_resume),
95 DEVMETHOD(bus_print_child, bus_generic_print_child),
96 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
97 { 0, 0 }
98 };
99
100 static driver_t mfi_pci_driver = {
101 "mfi",
102 mfi_methods,
103 sizeof(struct mfi_softc)
104 };
105
106 static devclass_t mfi_devclass;
107 DRIVER_MODULE(mfi, pci, mfi_pci_driver, mfi_devclass, 0, 0);
108
109 struct mfi_ident {
110 uint16_t vendor;
111 uint16_t device;
112 uint16_t subvendor;
113 uint16_t subdevice;
114 int flags;
115 const char *desc;
116 } mfi_identifiers[] = {
117 {0x1000, 0x0411, 0xffff, 0xffff, MFI_FLAGS_1064R, "LSI MegaSAS 1064R"}, /* Brocton IOP */
118 {0x1000, 0x0413, 0xffff, 0xffff, MFI_FLAGS_1064R, "LSI MegaSAS 1064R"}, /* Verde ZCR */
119 {0x1028, 0x0015, 0xffff, 0xffff, MFI_FLAGS_1064R, "Dell PERC 5/i"},
120 {0x1000, 0x0060, 0x1028, 0xffff, MFI_FLAGS_1078, "Dell PERC 6"},
121 {0x1000, 0x0060, 0xffff, 0xffff, MFI_FLAGS_1078, "LSI MegaSAS 1078"},
122 {0, 0, 0, 0, 0, NULL}
123 };
124
125 static struct mfi_ident *
126 mfi_find_ident(device_t dev)
127 {
128 struct mfi_ident *m;
129
130 for (m = mfi_identifiers; m->vendor != 0; m++) {
131 if ((m->vendor == pci_get_vendor(dev)) &&
132 (m->device == pci_get_device(dev)) &&
133 ((m->subvendor == pci_get_subvendor(dev)) ||
134 (m->subvendor == 0xffff)) &&
135 ((m->subdevice == pci_get_subdevice(dev)) ||
136 (m->subdevice == 0xffff)))
137 return (m);
138 }
139
140 return (NULL);
141 }
142
143 static int
144 mfi_pci_probe(device_t dev)
145 {
146 struct mfi_ident *id;
147
148 if ((id = mfi_find_ident(dev)) != NULL) {
149 device_set_desc(dev, id->desc);
150 return (BUS_PROBE_DEFAULT);
151 }
152 return (ENXIO);
153 }
154
155 static int
156 mfi_pci_attach(device_t dev)
157 {
158 struct mfi_softc *sc;
159 struct mfi_ident *m;
160 uint32_t command;
161 int error;
162
163 sc = device_get_softc(dev);
164 bzero(sc, sizeof(*sc));
165 sc->mfi_dev = dev;
166
167 /* Verify that the adapter can be set up in PCI space */
168 command = pci_read_config(dev, PCIR_COMMAND, 2);
169 command |= PCIM_CMD_BUSMASTEREN;
170 pci_write_config(dev, PCIR_COMMAND, command, 2);
171 command = pci_read_config(dev, PCIR_COMMAND, 2);
172 if ((command & PCIM_CMD_BUSMASTEREN) == 0) {
173 device_printf(dev, "Can't enable PCI busmaster\n");
174 return (ENXIO);
175 }
176 if ((command & PCIM_CMD_MEMEN) == 0) {
177 device_printf(dev, "PCI memory window not available\n");
178 return (ENXIO);
179 }
180
181 /* Allocate PCI registers */
182 sc->mfi_regs_rid = PCIR_BAR(0);
183 if ((sc->mfi_regs_resource = bus_alloc_resource_any(sc->mfi_dev,
184 SYS_RES_MEMORY, &sc->mfi_regs_rid, RF_ACTIVE)) == NULL) {
185 device_printf(dev, "Cannot allocate PCI registers\n");
186 return (ENXIO);
187 }
188 sc->mfi_btag = rman_get_bustag(sc->mfi_regs_resource);
189 sc->mfi_bhandle = rman_get_bushandle(sc->mfi_regs_resource);
190
191 error = ENOMEM;
192
193 /* Allocate parent DMA tag */
194 if (bus_dma_tag_create( NULL, /* parent */
195 1, 0, /* algnmnt, boundary */
196 BUS_SPACE_MAXADDR, /* lowaddr */
197 BUS_SPACE_MAXADDR, /* highaddr */
198 NULL, NULL, /* filter, filterarg */
199 BUS_SPACE_MAXSIZE_32BIT,/* maxsize */
200 BUS_SPACE_UNRESTRICTED, /* nsegments */
201 BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */
202 0, /* flags */
203 NULL, NULL, /* lockfunc, lockarg */
204 &sc->mfi_parent_dmat)) {
205 device_printf(dev, "Cannot allocate parent DMA tag\n");
206 goto out;
207 }
208
209 m = mfi_find_ident(dev);
210 sc->mfi_flags = m->flags;
211
212 error = mfi_attach(sc);
213 out:
214 if (error) {
215 mfi_free(sc);
216 mfi_pci_free(sc);
217 }
218
219 return (error);
220 }
221
222 static int
223 mfi_pci_detach(device_t dev)
224 {
225 struct mfi_softc *sc;
226 struct mfi_disk *ld;
227 int error;
228
229 sc = device_get_softc(dev);
230
231 sx_xlock(&sc->mfi_config_lock);
232 mtx_lock(&sc->mfi_io_lock);
233 if ((sc->mfi_flags & MFI_FLAGS_OPEN) != 0) {
234 mtx_unlock(&sc->mfi_io_lock);
235 sx_xunlock(&sc->mfi_config_lock);
236 return (EBUSY);
237 }
238 sc->mfi_detaching = 1;
239 mtx_unlock(&sc->mfi_io_lock);
240
241 while ((ld = TAILQ_FIRST(&sc->mfi_ld_tqh)) != NULL) {
242 if ((error = device_delete_child(dev, ld->ld_dev)) != 0) {
243 sc->mfi_detaching = 0;
244 sx_xunlock(&sc->mfi_config_lock);
245 return (error);
246 }
247 }
248 sx_xunlock(&sc->mfi_config_lock);
249
250 EVENTHANDLER_DEREGISTER(shutdown_final, sc->mfi_eh);
251
252 mfi_shutdown(sc);
253 mfi_free(sc);
254 mfi_pci_free(sc);
255 return (0);
256 }
257
258 static void
259 mfi_pci_free(struct mfi_softc *sc)
260 {
261
262 if (sc->mfi_regs_resource != NULL) {
263 bus_release_resource(sc->mfi_dev, SYS_RES_MEMORY,
264 sc->mfi_regs_rid, sc->mfi_regs_resource);
265 }
266
267 return;
268 }
269
270 static int
271 mfi_pci_suspend(device_t dev)
272 {
273
274 return (EINVAL);
275 }
276
277 static int
278 mfi_pci_resume(device_t dev)
279 {
280
281 return (EINVAL);
282 }
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