2 * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
3 * Copyright (c) 2010-2011 Adrian Chadd, Xenion Pty Ltd
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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.
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
35 * AHB bus front-end for the Atheros Wireless LAN controller driver.
40 #include <sys/param.h>
41 #include <sys/systm.h>
42 #include <sys/module.h>
43 #include <sys/kernel.h>
45 #include <sys/mutex.h>
46 #include <sys/errno.h>
48 #include <machine/bus.h>
49 #include <machine/resource.h>
53 #include <sys/socket.h>
56 #include <net/if_media.h>
57 #include <net/if_arp.h>
59 #include <net80211/ieee80211_var.h>
61 #include <dev/ath/if_athvar.h>
63 #include <mips/atheros/ar71xxreg.h>
64 #include <mips/atheros/ar91xxreg.h>
65 #include <mips/atheros/ar71xx_cpudef.h>
71 /* number of 16 bit words */
72 #define ATH_EEPROM_DATA_SIZE 2048
74 struct ath_ahb_softc {
75 struct ath_softc sc_sc;
76 struct resource *sc_sr; /* memory resource */
77 struct resource *sc_irq; /* irq resource */
78 struct resource *sc_eeprom; /* eeprom location */
79 void *sc_ih; /* interrupt handler */
82 #define VENDOR_ATHEROS 0x168c
83 #define AR9130_DEVID 0x000b
86 ath_ahb_probe(device_t dev)
88 int vendor_id, device_id;
92 * Check if a device/vendor ID is provided in hints.
94 if (resource_int_value(device_get_name(dev), device_get_unit(dev),
95 "vendor_id", &vendor_id) != 0) {
96 vendor_id = VENDOR_ATHEROS;
99 if (resource_int_value(device_get_name(dev), device_get_unit(dev),
100 "device_id", &device_id) != 0) {
101 device_id = AR9130_DEVID;
104 device_printf(dev, "Vendor=0x%04x, Device=0x%04x\n",
108 /* Attempt to probe */
109 devname = ath_hal_probe(vendor_id, device_id);
111 if (devname != NULL) {
112 device_set_desc(dev, devname);
113 return BUS_PROBE_DEFAULT;
119 ath_ahb_attach(device_t dev)
121 struct ath_ahb_softc *psc = device_get_softc(dev);
122 struct ath_softc *sc = &psc->sc_sc;
128 int device_id, vendor_id;
133 psc->sc_sr = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
134 if (psc->sc_sr == NULL) {
135 device_printf(dev, "cannot map register space\n");
139 if (resource_long_value(device_get_name(dev), device_get_unit(dev),
140 "eepromaddr", &eepromaddr) != 0) {
141 device_printf(dev, "cannot fetch 'eepromaddr' from hints\n");
146 * The default EEPROM size is 2048 * 16 bit words.
147 * Later EEPROM/OTP/flash regions may be quite a bit bigger.
149 if (resource_int_value(device_get_name(dev), device_get_unit(dev),
150 "eepromsize", &eepromsize) != 0) {
151 eepromsize = ATH_EEPROM_DATA_SIZE * 2;
156 device_printf(sc->sc_dev, "eeprom @ %p (%d bytes)\n",
157 (void *) eepromaddr, eepromsize);
158 psc->sc_eeprom = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, (uintptr_t) eepromaddr,
159 (uintptr_t) eepromaddr + (uintptr_t) (eepromsize - 1), 0, RF_ACTIVE);
160 if (psc->sc_eeprom == NULL) {
161 device_printf(dev, "cannot map eeprom space\n");
165 /* XXX uintptr_t is a bandaid for ia64; to be fixed */
166 sc->sc_st = (HAL_BUS_TAG)(uintptr_t) rman_get_bustag(psc->sc_sr);
167 sc->sc_sh = (HAL_BUS_HANDLE) rman_get_bushandle(psc->sc_sr);
169 * Mark device invalid so any interrupts (shared or otherwise)
170 * that arrive before the HAL is setup are discarded.
174 /* Copy the EEPROM data out */
175 sc->sc_eepromdata = malloc(eepromsize, M_TEMP, M_NOWAIT | M_ZERO);
176 if (sc->sc_eepromdata == NULL) {
177 device_printf(dev, "cannot allocate memory for eeprom data\n");
180 device_printf(sc->sc_dev, "eeprom data @ %p\n", (void *) rman_get_bushandle(psc->sc_eeprom));
181 /* XXX why doesn't this work? -adrian */
183 bus_space_read_multi_1(
184 rman_get_bustag(psc->sc_eeprom),
185 rman_get_bushandle(psc->sc_eeprom),
186 0, (u_int8_t *) sc->sc_eepromdata, eepromsize);
188 p = (void *) rman_get_bushandle(psc->sc_eeprom);
189 memcpy(sc->sc_eepromdata, p, eepromsize);
192 * Arrange interrupt line.
195 psc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_SHAREABLE|RF_ACTIVE);
196 if (psc->sc_irq == NULL) {
197 device_printf(dev, "could not map interrupt\n");
200 if (bus_setup_intr(dev, psc->sc_irq,
201 INTR_TYPE_NET | INTR_MPSAFE,
202 NULL, ath_intr, sc, &psc->sc_ih)) {
203 device_printf(dev, "could not establish interrupt\n");
208 * Setup DMA descriptor area.
210 if (bus_dma_tag_create(bus_get_dma_tag(dev), /* parent */
211 1, 0, /* alignment, bounds */
212 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
213 BUS_SPACE_MAXADDR, /* highaddr */
214 NULL, NULL, /* filter, filterarg */
215 0x3ffff, /* maxsize XXX */
216 ATH_MAX_SCATTER, /* nsegments */
217 0x3ffff, /* maxsegsize XXX */
218 BUS_DMA_ALLOCNOW, /* flags */
222 device_printf(dev, "cannot allocate DMA tag\n");
227 * Check if a device/vendor ID is provided in hints.
229 if (resource_int_value(device_get_name(dev), device_get_unit(dev),
230 "vendor_id", &vendor_id) != 0) {
231 vendor_id = VENDOR_ATHEROS;
234 if (resource_int_value(device_get_name(dev), device_get_unit(dev),
235 "device_id", &device_id) != 0) {
236 device_id = AR9130_DEVID;
240 ATH_PCU_LOCK_INIT(sc);
241 ATH_RX_LOCK_INIT(sc);
242 ATH_TX_LOCK_INIT(sc);
243 ATH_TX_IC_LOCK_INIT(sc);
244 ATH_TXSTATUS_LOCK_INIT(sc);
246 error = ath_attach(device_id, sc);
247 if (error == 0) /* success */
250 ATH_TXSTATUS_LOCK_DESTROY(sc);
251 ATH_RX_LOCK_DESTROY(sc);
252 ATH_TX_LOCK_DESTROY(sc);
253 ATH_TX_IC_LOCK_DESTROY(sc);
254 ATH_PCU_LOCK_DESTROY(sc);
255 ATH_LOCK_DESTROY(sc);
256 bus_dma_tag_destroy(sc->sc_dmat);
258 bus_teardown_intr(dev, psc->sc_irq, psc->sc_ih);
260 bus_release_resource(dev, SYS_RES_IRQ, 0, psc->sc_irq);
262 bus_release_resource(dev, SYS_RES_MEMORY, 0, psc->sc_eeprom);
264 bus_release_resource(dev, SYS_RES_MEMORY, 0, psc->sc_sr);
267 if (sc->sc_eepromdata)
268 free(sc->sc_eepromdata, M_TEMP);
273 ath_ahb_detach(device_t dev)
275 struct ath_ahb_softc *psc = device_get_softc(dev);
276 struct ath_softc *sc = &psc->sc_sc;
278 /* check if device was removed */
279 sc->sc_invalid = !bus_child_present(dev);
283 bus_generic_detach(dev);
284 bus_teardown_intr(dev, psc->sc_irq, psc->sc_ih);
285 bus_release_resource(dev, SYS_RES_IRQ, 0, psc->sc_irq);
287 bus_dma_tag_destroy(sc->sc_dmat);
288 bus_release_resource(dev, SYS_RES_MEMORY, 0, psc->sc_sr);
289 bus_release_resource(dev, SYS_RES_MEMORY, 0, psc->sc_eeprom);
291 if (sc->sc_eepromdata)
292 free(sc->sc_eepromdata, M_TEMP);
294 ATH_TXSTATUS_LOCK_DESTROY(sc);
295 ATH_RX_LOCK_DESTROY(sc);
296 ATH_TX_LOCK_DESTROY(sc);
297 ATH_TX_IC_LOCK_DESTROY(sc);
298 ATH_PCU_LOCK_DESTROY(sc);
299 ATH_LOCK_DESTROY(sc);
305 ath_ahb_shutdown(device_t dev)
307 struct ath_ahb_softc *psc = device_get_softc(dev);
309 ath_shutdown(&psc->sc_sc);
314 ath_ahb_suspend(device_t dev)
316 struct ath_ahb_softc *psc = device_get_softc(dev);
318 ath_suspend(&psc->sc_sc);
324 ath_ahb_resume(device_t dev)
326 struct ath_ahb_softc *psc = device_get_softc(dev);
328 ath_resume(&psc->sc_sc);
333 static device_method_t ath_ahb_methods[] = {
334 /* Device interface */
335 DEVMETHOD(device_probe, ath_ahb_probe),
336 DEVMETHOD(device_attach, ath_ahb_attach),
337 DEVMETHOD(device_detach, ath_ahb_detach),
338 DEVMETHOD(device_shutdown, ath_ahb_shutdown),
339 DEVMETHOD(device_suspend, ath_ahb_suspend),
340 DEVMETHOD(device_resume, ath_ahb_resume),
344 static driver_t ath_ahb_driver = {
347 sizeof (struct ath_ahb_softc)
349 static devclass_t ath_devclass;
350 DRIVER_MODULE(ath, nexus, ath_ahb_driver, ath_devclass, 0, 0);
351 MODULE_VERSION(ath, 1);
352 MODULE_DEPEND(ath, wlan, 1, 1, 1); /* 802.11 media layer */
353 MODULE_DEPEND(ath, if_ath, 1, 1, 1); /* if_ath driver */