1 /*-
2 * Copyright (c) 2007 Marvell Semiconductor, Inc.
3 * Copyright (c) 2007 Sam Leffler, Errno Consulting
4 * Copyright (c) 2008 Weongyo Jeong <weongyo@freebsd.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer,
12 * without modification.
13 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
14 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
15 * redistribution must be conditioned upon including a substantially
16 * similar Disclaimer requirement for further binary redistribution.
17 *
18 * NO WARRANTY
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
22 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
23 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
24 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
27 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
29 * THE POSSIBILITY OF SUCH DAMAGES.
30 */
31
32 #include <sys/cdefs.h>
33 #ifdef __FreeBSD__
34 __FBSDID("$FreeBSD$");
35 #endif
36
37 /*
38 * PCI front-end for the Marvell 88W8335 Wireless LAN controller driver.
39 */
40
41 #include <sys/param.h>
42 #include <sys/kernel.h>
43 #include <sys/module.h>
44 #include <sys/socket.h>
45 #include <sys/sysctl.h>
46
47 #include <machine/bus.h>
48 #include <sys/bus.h>
49 #include <sys/rman.h>
50
51 #include <net/if.h>
52 #include <net/if_media.h>
53
54 #include <net80211/ieee80211_var.h>
55
56 #include <dev/malo/if_malo.h>
57
58 #include <dev/pci/pcivar.h>
59 #include <dev/pci/pcireg.h>
60
61 /*
62 * PCI glue.
63 */
64
65 #define MALO_RESOURCE_MAX 2
66 #define MALO_MSI_MESSAGES 1
67
68 struct malo_pci_softc {
69 struct malo_softc malo_sc;
70 struct resource_spec *malo_mem_spec;
71 struct resource *malo_res_mem[MALO_RESOURCE_MAX];
72 struct resource_spec *malo_irq_spec;
73 struct resource *malo_res_irq[MALO_MSI_MESSAGES];
74 void *malo_intrhand[MALO_MSI_MESSAGES];
75 int malo_msi;
76 };
77
78 /*
79 * Tunable variables.
80 */
81 SYSCTL_DECL(_hw_malo);
82 SYSCTL_NODE(_hw_malo, OID_AUTO, pci, CTLFLAG_RD, 0,
83 "Marvell 88W8335 driver PCI parameters");
84
85 static int msi_disable = 0; /* MSI disabled */
86 SYSCTL_INT(_hw_malo_pci, OID_AUTO, msi_disable, CTLFLAG_RW, &msi_disable,
87 0, "MSI disabled");
88 TUNABLE_INT("hw.malo.pci.msi_disable", &msi_disable);
89
90 /*
91 * Devices supported by this driver.
92 */
93 #define VENDORID_MARVELL 0X11AB
94 #define DEVICEID_MRVL_88W8310 0X1FA7
95 #define DEVICEID_MRVL_88W8335R1 0X1FAA
96 #define DEVICEID_MRVL_88W8335R2 0X1FAB
97
98 static struct malo_product {
99 uint16_t mp_vendorid;
100 uint16_t mp_deviceid;
101 const char *mp_name;
102 } malo_products[] = {
103 { VENDORID_MARVELL, DEVICEID_MRVL_88W8310,
104 "Marvell Libertas 88W8310 802.11g Wireless Adapter" },
105 { VENDORID_MARVELL, DEVICEID_MRVL_88W8335R1,
106 "Marvell Libertas 88W8335 802.11g Wireless Adapter" },
107 { VENDORID_MARVELL, DEVICEID_MRVL_88W8335R2,
108 "Marvell Libertas 88W8335 802.11g Wireless Adapter" }
109 };
110
111 static struct resource_spec malo_res_spec_mem[] = {
112 { SYS_RES_MEMORY, PCIR_BAR(0), RF_ACTIVE },
113 { SYS_RES_MEMORY, PCIR_BAR(1), RF_ACTIVE },
114 { -1, 0, 0 }
115 };
116
117 static struct resource_spec malo_res_spec_legacy[] = {
118 { SYS_RES_IRQ, 0, RF_ACTIVE | RF_SHAREABLE },
119 { -1, 0, 0 }
120 };
121
122 static struct resource_spec malo_res_spec_msi[] = {
123 { SYS_RES_IRQ, 1, RF_ACTIVE },
124 { -1, 0, 0 }
125 };
126
127 static int malo_pci_detach(device_t);
128
129 static int
130 malo_pci_probe(device_t dev)
131 {
132 #define N(a) (sizeof(a) / sizeof((a)[0]))
133 struct malo_product *mp;
134 uint16_t vendor, devid;
135 int i;
136
137 vendor = pci_get_vendor(dev);
138 devid = pci_get_device(dev);
139 mp = malo_products;
140
141 for (i = 0; i < N(malo_products); i++, mp++) {
142 if (vendor == mp->mp_vendorid && devid == mp->mp_deviceid) {
143 device_set_desc(dev, mp->mp_name);
144 return (BUS_PROBE_DEFAULT);
145 }
146 }
147
148 return (ENXIO);
149 #undef N
150 }
151
152 static int
153 malo_pci_setup(device_t dev)
154 {
155
156 /*
157 * Enable memory mapping and bus mastering.
158 */
159 if (pci_enable_busmaster(dev) != 0)
160 return -1;
161 if (pci_enable_io(dev, SYS_RES_MEMORY) != 0)
162 return -1;
163
164 return 0;
165 }
166
167 static int
168 malo_pci_attach(device_t dev)
169 {
170 int error = ENXIO, i, msic, reg;
171 struct malo_pci_softc *psc = device_get_softc(dev);
172 struct malo_softc *sc = &psc->malo_sc;
173
174 sc->malo_dev = dev;
175
176 /*
177 * Enable memory mapping and bus mastering.
178 */
179 if (malo_pci_setup(dev))
180 return (ENXIO);
181
182 /*
183 * Setup memory-mapping of PCI registers.
184 */
185 psc->malo_mem_spec = malo_res_spec_mem;
186 error = bus_alloc_resources(dev, psc->malo_mem_spec, psc->malo_res_mem);
187 if (error) {
188 device_printf(dev, "couldn't allocate memory resources\n");
189 return (ENXIO);
190 }
191
192 /*
193 * Arrange and allocate interrupt line.
194 */
195 sc->malo_invalid = 1;
196
197 if (pci_find_extcap(dev, PCIY_EXPRESS, ®) == 0) {
198 msic = pci_msi_count(dev);
199 if (bootverbose)
200 device_printf(dev, "MSI count : %d\n", msic);
201 } else
202 msic = 0;
203
204 psc->malo_irq_spec = malo_res_spec_legacy;
205 if (msic == MALO_MSI_MESSAGES && msi_disable == 0) {
206 if (pci_alloc_msi(dev, &msic) == 0) {
207 if (msic == MALO_MSI_MESSAGES) {
208 device_printf(dev, "Using %d MSI messages\n",
209 msic);
210 psc->malo_irq_spec = malo_res_spec_msi;
211 psc->malo_msi = 1;
212 } else
213 pci_release_msi(dev);
214 }
215 }
216
217 error = bus_alloc_resources(dev, psc->malo_irq_spec, psc->malo_res_irq);
218 if (error) {
219 device_printf(dev, "couldn't allocate IRQ resources\n");
220 goto bad;
221 }
222
223 if (psc->malo_msi == 0)
224 error = bus_setup_intr(dev, psc->malo_res_irq[0],
225 INTR_TYPE_NET | INTR_MPSAFE, malo_intr, NULL, sc,
226 &psc->malo_intrhand[0]);
227 else {
228 for (i = 0; i < MALO_MSI_MESSAGES; i++) {
229 error = bus_setup_intr(dev, psc->malo_res_irq[i],
230 INTR_TYPE_NET | INTR_MPSAFE, malo_intr, NULL, sc,
231 &psc->malo_intrhand[i]);
232 if (error != 0)
233 break;
234 }
235 }
236
237 /*
238 * Setup DMA descriptor area.
239 */
240 if (bus_dma_tag_create(bus_get_dma_tag(dev), /* parent */
241 1, 0, /* alignment, bounds */
242 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
243 BUS_SPACE_MAXADDR, /* highaddr */
244 NULL, NULL, /* filter, filterarg */
245 BUS_SPACE_MAXADDR, /* maxsize */
246 0, /* nsegments */
247 BUS_SPACE_MAXADDR, /* maxsegsize */
248 BUS_DMA_ALLOCNOW, /* flags */
249 NULL, /* lockfunc */
250 NULL, /* lockarg */
251 &sc->malo_dmat)) {
252 device_printf(dev, "cannot allocate DMA tag\n");
253 goto bad1;
254 }
255
256 sc->malo_io0t = rman_get_bustag(psc->malo_res_mem[0]);
257 sc->malo_io0h = rman_get_bushandle(psc->malo_res_mem[0]);
258 sc->malo_io1t = rman_get_bustag(psc->malo_res_mem[1]);
259 sc->malo_io1h = rman_get_bushandle(psc->malo_res_mem[1]);
260
261 error = malo_attach(pci_get_device(dev), sc);
262
263 if (error != 0) {
264 malo_pci_detach(dev);
265 return (error);
266 }
267
268 return (error);
269 bad1:
270 if (psc->malo_msi == 0)
271 bus_teardown_intr(dev, psc->malo_res_irq[0],
272 psc->malo_intrhand[0]);
273 else {
274 for (i = 0; i < MALO_MSI_MESSAGES; i++)
275 bus_teardown_intr(dev, psc->malo_res_irq[i],
276 psc->malo_intrhand[i]);
277 }
278
279 bad:
280 if (psc->malo_msi != 0)
281 pci_release_msi(dev);
282
283 return (error);
284 }
285
286 static int
287 malo_pci_detach(device_t dev)
288 {
289 int i;
290 struct malo_pci_softc *psc = device_get_softc(dev);
291 struct malo_softc *sc = &psc->malo_sc;
292
293 /* check if device was removed */
294 sc->malo_invalid = !bus_child_present(dev);
295
296 malo_detach(sc);
297
298 bus_generic_detach(dev);
299
300 if (psc->malo_msi == 0)
301 bus_teardown_intr(dev, psc->malo_res_irq[0],
302 psc->malo_intrhand[0]);
303 else {
304 for (i = 0; i < MALO_MSI_MESSAGES; i++)
305 bus_teardown_intr(dev, psc->malo_res_irq[i],
306 psc->malo_intrhand[i]);
307
308 pci_release_msi(dev);
309 }
310
311 bus_release_resources(dev, psc->malo_irq_spec, psc->malo_res_irq);
312 bus_dma_tag_destroy(sc->malo_dmat);
313 bus_release_resources(dev, psc->malo_mem_spec, psc->malo_res_mem);
314
315 return (0);
316 }
317
318 static int
319 malo_pci_shutdown(device_t dev)
320 {
321 struct malo_pci_softc *psc = device_get_softc(dev);
322
323 malo_shutdown(&psc->malo_sc);
324
325 return (0);
326 }
327
328 static int
329 malo_pci_suspend(device_t dev)
330 {
331 struct malo_pci_softc *psc = device_get_softc(dev);
332
333 malo_suspend(&psc->malo_sc);
334
335 return (0);
336 }
337
338 static int
339 malo_pci_resume(device_t dev)
340 {
341 struct malo_pci_softc *psc = device_get_softc(dev);
342
343 if (!malo_pci_setup(dev))
344 return ENXIO;
345
346 malo_resume(&psc->malo_sc);
347
348 return (0);
349 }
350
351 static device_method_t malo_pci_methods[] = {
352 /* Device interface */
353 DEVMETHOD(device_probe, malo_pci_probe),
354 DEVMETHOD(device_attach, malo_pci_attach),
355 DEVMETHOD(device_detach, malo_pci_detach),
356 DEVMETHOD(device_shutdown, malo_pci_shutdown),
357 DEVMETHOD(device_suspend, malo_pci_suspend),
358 DEVMETHOD(device_resume, malo_pci_resume),
359 { 0,0 }
360 };
361
362 static driver_t malo_pci_driver = {
363 "malo",
364 malo_pci_methods,
365 sizeof(struct malo_pci_softc)
366 };
367
368 static devclass_t malo_devclass;
369 DRIVER_MODULE(if_malo, pci, malo_pci_driver, malo_devclass, 0, 0);
370 DRIVER_MODULE(if_malo, cardbus, malo_pci_driver, malo_devclass, 0, 0);
371 MODULE_VERSION(if_malo, 1);
372 MODULE_DEPEND(if_malo, wlan, 1, 1, 1); /* 802.11 media layer */
373 MODULE_DEPEND(if_malo, malofw_fw, 1, 1, 1);
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