ath - Basic re-port, base code compile
[dragonfly.git] / sys / dev / netif / ath / ath / if_ath_ahb.c
CommitLineData
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1/*-
2 * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
3 * Copyright (c) 2010-2011 Adrian Chadd, Xenion Pty Ltd
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer,
11 * without modification.
12 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
13 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
14 * redistribution must be conditioned upon including a substantially
15 * similar Disclaimer requirement for further binary redistribution.
16 *
17 * NO WARRANTY
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
21 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
22 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
23 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
26 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
28 * THE POSSIBILITY OF SUCH DAMAGES.
29 */
30
31#include <sys/cdefs.h>
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32
33/*
34 * AHB bus front-end for the Atheros Wireless LAN controller driver.
35 */
36
37#include "opt_ath.h"
38
39#include <sys/param.h>
40#include <sys/systm.h>
41#include <sys/malloc.h>
42#include <sys/module.h>
43#include <sys/kernel.h>
44#include <sys/lock.h>
45#include <sys/mutex.h>
46#include <sys/errno.h>
47
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48#include <sys/bus.h>
49#include <sys/rman.h>
50
51#include <sys/socket.h>
52
53#include <net/if.h>
54#include <net/if_media.h>
55#include <net/if_arp.h>
56#include <net/ethernet.h>
57
5cd80a8c 58#include <netproto/802_11/ieee80211_var.h>
572ff6f6 59
5cd80a8c 60#include <dev/netif/ath/ath/if_athvar.h>
572ff6f6 61
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62#define MIPS_KSEG1_START ((intptr_t)(int32_t)0xa0000000)
63#define MIPS_PHYS_TO_KSEG1(x) ((uintptr_t)(x) | MIPS_KSEG1_START)
572ff6f6 64
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65#include <dev/netif/ath/ath_hal/ar71xx/ar71xxreg.h>
66#include <dev/netif/ath/ath_hal/ar91xx/ar91xxreg.h>
67#include <dev/netif/ath/ath_hal/ar71xx/ar71xx_cpudef.h>
5cd80a8c 68
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69/*
70 * bus glue.
71 */
72
73/* number of 16 bit words */
74#define ATH_EEPROM_DATA_SIZE 2048
75
76struct ath_ahb_softc {
77 struct ath_softc sc_sc;
78 struct resource *sc_sr; /* memory resource */
79 struct resource *sc_irq; /* irq resource */
80 struct resource *sc_eeprom; /* eeprom location */
81 void *sc_ih; /* interrupt handler */
82};
83
84#define VENDOR_ATHEROS 0x168c
85#define AR9130_DEVID 0x000b
86
87static int
88ath_ahb_probe(device_t dev)
89{
90 int vendor_id, device_id;
91 const char* devname;
92
93 /*
94 * Check if a device/vendor ID is provided in hints.
95 */
96 if (resource_int_value(device_get_name(dev), device_get_unit(dev),
97 "vendor_id", &vendor_id) != 0) {
98 vendor_id = VENDOR_ATHEROS;
99 }
100
101 if (resource_int_value(device_get_name(dev), device_get_unit(dev),
102 "device_id", &device_id) != 0) {
103 device_id = AR9130_DEVID;
104 }
105
106 device_printf(dev, "Vendor=0x%04x, Device=0x%04x\n",
107 vendor_id & 0xffff,
108 device_id & 0xffff);
109
110 /* Attempt to probe */
111 devname = ath_hal_probe(vendor_id, device_id);
112
113 if (devname != NULL) {
114 device_set_desc(dev, devname);
115 return BUS_PROBE_DEFAULT;
116 }
117 return ENXIO;
118}
119
120static int
121ath_ahb_attach(device_t dev)
122{
123 struct ath_ahb_softc *psc = device_get_softc(dev);
124 struct ath_softc *sc = &psc->sc_sc;
125 int error = ENXIO;
126 int rid;
127 long eepromaddr;
128 int eepromsize;
129 uint8_t *p;
130 int device_id, vendor_id;
131
132 sc->sc_dev = dev;
133
134 rid = 0;
135 psc->sc_sr = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
136 if (psc->sc_sr == NULL) {
137 device_printf(dev, "cannot map register space\n");
138 goto bad;
139 }
140
141 if (resource_long_value(device_get_name(dev), device_get_unit(dev),
142 "eepromaddr", &eepromaddr) != 0) {
143 device_printf(dev, "cannot fetch 'eepromaddr' from hints\n");
144 goto bad0;
145 }
146
147 /*
148 * The default EEPROM size is 2048 * 16 bit words.
149 * Later EEPROM/OTP/flash regions may be quite a bit bigger.
150 */
151 if (resource_int_value(device_get_name(dev), device_get_unit(dev),
152 "eepromsize", &eepromsize) != 0) {
153 eepromsize = ATH_EEPROM_DATA_SIZE * 2;
154 }
155
156
157 rid = 0;
158 device_printf(sc->sc_dev, "eeprom @ %p (%d bytes)\n",
159 (void *) eepromaddr, eepromsize);
160 psc->sc_eeprom = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, (uintptr_t) eepromaddr,
161 (uintptr_t) eepromaddr + (uintptr_t) (eepromsize - 1), 0, RF_ACTIVE);
162 if (psc->sc_eeprom == NULL) {
163 device_printf(dev, "cannot map eeprom space\n");
164 goto bad0;
165 }
166
167 /* XXX uintptr_t is a bandaid for ia64; to be fixed */
168 sc->sc_st = (HAL_BUS_TAG)(uintptr_t) rman_get_bustag(psc->sc_sr);
169 sc->sc_sh = (HAL_BUS_HANDLE) rman_get_bushandle(psc->sc_sr);
170 /*
171 * Mark device invalid so any interrupts (shared or otherwise)
172 * that arrive before the HAL is setup are discarded.
173 */
174 sc->sc_invalid = 1;
175
176 /* Copy the EEPROM data out */
3133c5e3 177 sc->sc_eepromdata = kmalloc(eepromsize, M_TEMP, M_INTWAIT | M_ZERO);
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178 if (sc->sc_eepromdata == NULL) {
179 device_printf(dev, "cannot allocate memory for eeprom data\n");
180 goto bad1;
181 }
182 device_printf(sc->sc_dev, "eeprom data @ %p\n", (void *) rman_get_bushandle(psc->sc_eeprom));
183 /* XXX why doesn't this work? -adrian */
184#if 0
185 bus_space_read_multi_1(
186 rman_get_bustag(psc->sc_eeprom),
187 rman_get_bushandle(psc->sc_eeprom),
188 0, (u_int8_t *) sc->sc_eepromdata, eepromsize);
189#endif
190 p = (void *) rman_get_bushandle(psc->sc_eeprom);
191 memcpy(sc->sc_eepromdata, p, eepromsize);
192
193 /*
194 * Arrange interrupt line.
195 */
196 rid = 0;
197 psc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_SHAREABLE|RF_ACTIVE);
198 if (psc->sc_irq == NULL) {
199 device_printf(dev, "could not map interrupt\n");
200 goto bad1;
201 }
202 if (bus_setup_intr(dev, psc->sc_irq,
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203 INTR_MPSAFE, ath_intr,
204 sc, &psc->sc_ih,
205 &wlan_global_serializer)) {
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206 device_printf(dev, "could not establish interrupt\n");
207 goto bad2;
208 }
209
210 /*
211 * Setup DMA descriptor area.
212 */
213 if (bus_dma_tag_create(bus_get_dma_tag(dev), /* parent */
3133c5e3 214 4, 0, /* alignment, bounds */
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215 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
216 BUS_SPACE_MAXADDR, /* highaddr */
217 NULL, NULL, /* filter, filterarg */
218 0x3ffff, /* maxsize XXX */
219 ATH_MAX_SCATTER, /* nsegments */
220 0x3ffff, /* maxsegsize XXX */
221 BUS_DMA_ALLOCNOW, /* flags */
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222 &sc->sc_dmat)) {
223 device_printf(dev, "cannot allocate DMA tag\n");
224 goto bad3;
225 }
226
227 /*
228 * Check if a device/vendor ID is provided in hints.
229 */
230 if (resource_int_value(device_get_name(dev), device_get_unit(dev),
231 "vendor_id", &vendor_id) != 0) {
232 vendor_id = VENDOR_ATHEROS;
233 }
234
235 if (resource_int_value(device_get_name(dev), device_get_unit(dev),
236 "device_id", &device_id) != 0) {
237 device_id = AR9130_DEVID;
238 }
239
240 ATH_LOCK_INIT(sc);
241 ATH_PCU_LOCK_INIT(sc);
242 ATH_RX_LOCK_INIT(sc);
243 ATH_TX_LOCK_INIT(sc);
244 ATH_TX_IC_LOCK_INIT(sc);
245 ATH_TXSTATUS_LOCK_INIT(sc);
246
247 error = ath_attach(device_id, sc);
248 if (error == 0) /* success */
249 return 0;
250
251 ATH_TXSTATUS_LOCK_DESTROY(sc);
252 ATH_RX_LOCK_DESTROY(sc);
253 ATH_TX_LOCK_DESTROY(sc);
254 ATH_TX_IC_LOCK_DESTROY(sc);
255 ATH_PCU_LOCK_DESTROY(sc);
256 ATH_LOCK_DESTROY(sc);
257 bus_dma_tag_destroy(sc->sc_dmat);
258bad3:
259 bus_teardown_intr(dev, psc->sc_irq, psc->sc_ih);
260bad2:
261 bus_release_resource(dev, SYS_RES_IRQ, 0, psc->sc_irq);
262bad1:
263 bus_release_resource(dev, SYS_RES_MEMORY, 0, psc->sc_eeprom);
264bad0:
265 bus_release_resource(dev, SYS_RES_MEMORY, 0, psc->sc_sr);
266bad:
267 /* XXX?! */
268 if (sc->sc_eepromdata)
3133c5e3 269 kfree(sc->sc_eepromdata, M_TEMP);
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270 return (error);
271}
272
273static int
274ath_ahb_detach(device_t dev)
275{
276 struct ath_ahb_softc *psc = device_get_softc(dev);
277 struct ath_softc *sc = &psc->sc_sc;
278
279 /* check if device was removed */
280 sc->sc_invalid = !bus_child_present(dev);
281
282 ath_detach(sc);
283
284 bus_generic_detach(dev);
285 bus_teardown_intr(dev, psc->sc_irq, psc->sc_ih);
286 bus_release_resource(dev, SYS_RES_IRQ, 0, psc->sc_irq);
287
288 bus_dma_tag_destroy(sc->sc_dmat);
289 bus_release_resource(dev, SYS_RES_MEMORY, 0, psc->sc_sr);
290 bus_release_resource(dev, SYS_RES_MEMORY, 0, psc->sc_eeprom);
291 /* XXX?! */
292 if (sc->sc_eepromdata)
3133c5e3 293 kfree(sc->sc_eepromdata, M_TEMP);
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294
295 ATH_TXSTATUS_LOCK_DESTROY(sc);
296 ATH_RX_LOCK_DESTROY(sc);
297 ATH_TX_LOCK_DESTROY(sc);
298 ATH_TX_IC_LOCK_DESTROY(sc);
299 ATH_PCU_LOCK_DESTROY(sc);
300 ATH_LOCK_DESTROY(sc);
301
302 return (0);
303}
304
305static int
306ath_ahb_shutdown(device_t dev)
307{
308 struct ath_ahb_softc *psc = device_get_softc(dev);
309
310 ath_shutdown(&psc->sc_sc);
311 return (0);
312}
313
314static int
315ath_ahb_suspend(device_t dev)
316{
317 struct ath_ahb_softc *psc = device_get_softc(dev);
318
319 ath_suspend(&psc->sc_sc);
320
321 return (0);
322}
323
324static int
325ath_ahb_resume(device_t dev)
326{
327 struct ath_ahb_softc *psc = device_get_softc(dev);
328
329 ath_resume(&psc->sc_sc);
330
331 return (0);
332}
333
334static device_method_t ath_ahb_methods[] = {
335 /* Device interface */
336 DEVMETHOD(device_probe, ath_ahb_probe),
337 DEVMETHOD(device_attach, ath_ahb_attach),
338 DEVMETHOD(device_detach, ath_ahb_detach),
339 DEVMETHOD(device_shutdown, ath_ahb_shutdown),
340 DEVMETHOD(device_suspend, ath_ahb_suspend),
341 DEVMETHOD(device_resume, ath_ahb_resume),
342
343 { 0,0 }
344};
345static driver_t ath_ahb_driver = {
346 "ath",
347 ath_ahb_methods,
348 sizeof (struct ath_ahb_softc)
349};
350static devclass_t ath_devclass;
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351DRIVER_MODULE(ath_ahb, nexus, ath_ahb_driver, ath_devclass, 0, 0);
352MODULE_VERSION(ath_ahb, 1);
353MODULE_DEPEND(ath_ahb, wlan, 1, 1, 1); /* 802.11 media layer */
354MODULE_DEPEND(ath_ahb, if_ath, 1, 1, 1); /* if_ath driver */
355MODULE_DEPEND(ath_ahb, ath_hal, 1, 1, 1); /* Atheros HAL */
356MODULE_DEPEND(ath_ahb, ath_rate, 1, 1, 1); /* rate control alg */
357MODULE_DEPEND(ath_ahb, ath_dfs, 1, 1, 1); /* wtf */