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/8.1/sys/dev/mfi/mfi_pci.c 204911 2010-03-09 13:32:50Z kib $");
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 MODULE_VERSION(mfi, 1);
109
110 struct mfi_ident {
111 uint16_t vendor;
112 uint16_t device;
113 uint16_t subvendor;
114 uint16_t subdevice;
115 int flags;
116 const char *desc;
117 } mfi_identifiers[] = {
118 {0x1000, 0x0060, 0x1028, 0xffff, MFI_FLAGS_1078, "Dell PERC 6"},
119 {0x1000, 0x0060, 0xffff, 0xffff, MFI_FLAGS_1078, "LSI MegaSAS 1078"},
120 {0x1000, 0x0078, 0xffff, 0xffff, MFI_FLAGS_GEN2, "LSI MegaSAS Gen2"},
121 {0x1000, 0x0079, 0x1028, 0x1f15, MFI_FLAGS_GEN2, "Dell PERC H800 Adapter"},
122 {0x1000, 0x0079, 0x1028, 0x1f16, MFI_FLAGS_GEN2, "Dell PERC H700 Adapter"},
123 {0x1000, 0x0079, 0x1028, 0x1f17, MFI_FLAGS_GEN2, "Dell PERC H700 Integrated"},
124 {0x1000, 0x0079, 0x1028, 0x1f18, MFI_FLAGS_GEN2, "Dell PERC H700 Modular"},
125 {0x1000, 0x0079, 0x1028, 0x1f19, MFI_FLAGS_GEN2, "Dell PERC H700"},
126 {0x1000, 0x0079, 0x1028, 0x1f1b, MFI_FLAGS_GEN2, "Dell PERC H800"},
127 {0x1000, 0x0079, 0x1028, 0xffff, MFI_FLAGS_GEN2, "Dell PERC Gen2"},
128 {0x1000, 0x0079, 0xffff, 0xffff, MFI_FLAGS_GEN2, "LSI MegaSAS Gen2"},
129 {0x1000, 0x007c, 0xffff, 0xffff, MFI_FLAGS_1078, "LSI MegaSAS 1078"},
130 {0x1000, 0x0411, 0xffff, 0xffff, MFI_FLAGS_1064R, "LSI MegaSAS 1064R"}, /* Brocton IOP */
131 {0x1000, 0x0413, 0xffff, 0xffff, MFI_FLAGS_1064R, "LSI MegaSAS 1064R"}, /* Verde ZCR */
132 {0x1028, 0x0015, 0xffff, 0xffff, MFI_FLAGS_1064R, "Dell PERC 5/i"},
133 {0, 0, 0, 0, 0, NULL}
134 };
135
136 static struct mfi_ident *
137 mfi_find_ident(device_t dev)
138 {
139 struct mfi_ident *m;
140
141 for (m = mfi_identifiers; m->vendor != 0; m++) {
142 if ((m->vendor == pci_get_vendor(dev)) &&
143 (m->device == pci_get_device(dev)) &&
144 ((m->subvendor == pci_get_subvendor(dev)) ||
145 (m->subvendor == 0xffff)) &&
146 ((m->subdevice == pci_get_subdevice(dev)) ||
147 (m->subdevice == 0xffff)))
148 return (m);
149 }
150
151 return (NULL);
152 }
153
154 static int
155 mfi_pci_probe(device_t dev)
156 {
157 struct mfi_ident *id;
158
159 if ((id = mfi_find_ident(dev)) != NULL) {
160 device_set_desc(dev, id->desc);
161 return (BUS_PROBE_DEFAULT);
162 }
163 return (ENXIO);
164 }
165
166 static int
167 mfi_pci_attach(device_t dev)
168 {
169 struct mfi_softc *sc;
170 struct mfi_ident *m;
171 uint32_t command;
172 int error;
173
174 sc = device_get_softc(dev);
175 bzero(sc, sizeof(*sc));
176 sc->mfi_dev = dev;
177 m = mfi_find_ident(dev);
178 sc->mfi_flags = m->flags;
179
180 /* Verify that the adapter can be set up in PCI space */
181 command = pci_read_config(dev, PCIR_COMMAND, 2);
182 command |= PCIM_CMD_BUSMASTEREN;
183 pci_write_config(dev, PCIR_COMMAND, command, 2);
184 command = pci_read_config(dev, PCIR_COMMAND, 2);
185 if ((command & PCIM_CMD_BUSMASTEREN) == 0) {
186 device_printf(dev, "Can't enable PCI busmaster\n");
187 return (ENXIO);
188 }
189 if ((command & PCIM_CMD_MEMEN) == 0) {
190 device_printf(dev, "PCI memory window not available\n");
191 return (ENXIO);
192 }
193
194 /* Allocate PCI registers */
195 if ((sc->mfi_flags & MFI_FLAGS_1064R) ||
196 (sc->mfi_flags & MFI_FLAGS_1078)) {
197 /* 1068/1078: Memory mapped BAR is at offset 0x10 */
198 sc->mfi_regs_rid = PCIR_BAR(0);
199 } else if (sc->mfi_flags & MFI_FLAGS_GEN2) {
200 /* GEN2: Memory mapped BAR is at offset 0x14 */
201 sc->mfi_regs_rid = PCIR_BAR(1);
202 }
203 if ((sc->mfi_regs_resource = bus_alloc_resource_any(sc->mfi_dev,
204 SYS_RES_MEMORY, &sc->mfi_regs_rid, RF_ACTIVE)) == NULL) {
205 device_printf(dev, "Cannot allocate PCI registers\n");
206 return (ENXIO);
207 }
208 sc->mfi_btag = rman_get_bustag(sc->mfi_regs_resource);
209 sc->mfi_bhandle = rman_get_bushandle(sc->mfi_regs_resource);
210
211 error = ENOMEM;
212
213 /* Allocate parent DMA tag */
214 if (bus_dma_tag_create( NULL, /* parent */
215 1, 0, /* algnmnt, boundary */
216 BUS_SPACE_MAXADDR, /* lowaddr */
217 BUS_SPACE_MAXADDR, /* highaddr */
218 NULL, NULL, /* filter, filterarg */
219 BUS_SPACE_MAXSIZE_32BIT,/* maxsize */
220 BUS_SPACE_UNRESTRICTED, /* nsegments */
221 BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */
222 0, /* flags */
223 NULL, NULL, /* lockfunc, lockarg */
224 &sc->mfi_parent_dmat)) {
225 device_printf(dev, "Cannot allocate parent DMA tag\n");
226 goto out;
227 }
228
229 error = mfi_attach(sc);
230 out:
231 if (error) {
232 mfi_free(sc);
233 mfi_pci_free(sc);
234 }
235
236 return (error);
237 }
238
239 static int
240 mfi_pci_detach(device_t dev)
241 {
242 struct mfi_softc *sc;
243 struct mfi_disk *ld;
244 int error;
245
246 sc = device_get_softc(dev);
247
248 sx_xlock(&sc->mfi_config_lock);
249 mtx_lock(&sc->mfi_io_lock);
250 if ((sc->mfi_flags & MFI_FLAGS_OPEN) != 0) {
251 mtx_unlock(&sc->mfi_io_lock);
252 sx_xunlock(&sc->mfi_config_lock);
253 return (EBUSY);
254 }
255 sc->mfi_detaching = 1;
256 mtx_unlock(&sc->mfi_io_lock);
257
258 while ((ld = TAILQ_FIRST(&sc->mfi_ld_tqh)) != NULL) {
259 if ((error = device_delete_child(dev, ld->ld_dev)) != 0) {
260 sc->mfi_detaching = 0;
261 sx_xunlock(&sc->mfi_config_lock);
262 return (error);
263 }
264 }
265 sx_xunlock(&sc->mfi_config_lock);
266
267 EVENTHANDLER_DEREGISTER(shutdown_final, sc->mfi_eh);
268
269 mfi_shutdown(sc);
270 mfi_free(sc);
271 mfi_pci_free(sc);
272 return (0);
273 }
274
275 static void
276 mfi_pci_free(struct mfi_softc *sc)
277 {
278
279 if (sc->mfi_regs_resource != NULL) {
280 bus_release_resource(sc->mfi_dev, SYS_RES_MEMORY,
281 sc->mfi_regs_rid, sc->mfi_regs_resource);
282 }
283
284 return;
285 }
286
287 static int
288 mfi_pci_suspend(device_t dev)
289 {
290
291 return (EINVAL);
292 }
293
294 static int
295 mfi_pci_resume(device_t dev)
296 {
297
298 return (EINVAL);
299 }
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