2 * Copyright (c) 2006,2007
3 * Damien Bergamini <damien.bergamini@free.fr>
4 * Benjamin Close <Benjamin.Close@clearchain.com>
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 * $FreeBSD: src/sys/dev/wpi/if_wpi.c,v 1.27.2.2 2010/02/14 09:34:27 gavin Exp $
21 #define VERSION "20071127"
24 * Driver for Intel PRO/Wireless 3945ABG 802.11 network adapters.
26 * The 3945ABG network adapter doesn't use traditional hardware as
27 * many other adaptors do. Instead at run time the eeprom is set into a known
28 * state and told to load boot firmware. The boot firmware loads an init and a
29 * main binary firmware image into SRAM on the card via DMA.
30 * Once the firmware is loaded, the driver/hw then
31 * communicate by way of circular dma rings via the the SRAM to the firmware.
33 * There is 6 memory rings. 1 command ring, 1 rx data ring & 4 tx data rings.
34 * The 4 tx data rings allow for prioritization QoS.
36 * The rx data ring consists of 32 dma buffers. Two registers are used to
37 * indicate where in the ring the driver and the firmware are up to. The
38 * driver sets the initial read index (reg1) and the initial write index (reg2),
39 * the firmware updates the read index (reg1) on rx of a packet and fires an
40 * interrupt. The driver then processes the buffers starting at reg1 indicating
41 * to the firmware which buffers have been accessed by updating reg2. At the
42 * same time allocating new memory for the processed buffer.
44 * A similar thing happens with the tx rings. The difference is the firmware
45 * stop processing buffers once the queue is full and until confirmation
46 * of a successful transmition (tx_intr) has occurred.
48 * The command ring operates in the same manner as the tx queues.
50 * All communication direct to the card (ie eeprom) is classed as Stage1
53 * All communication via the firmware to the card is classed as State2.
54 * The firmware consists of 2 parts. A bootstrap firmware and a runtime
55 * firmware. The bootstrap firmware and runtime firmware are loaded
56 * from host memory via dma to the card then told to execute. From this point
57 * on the majority of communications between the driver and the card goes
61 #include <sys/param.h>
62 #include <sys/sysctl.h>
63 #include <sys/sockio.h>
65 #include <sys/kernel.h>
66 #include <sys/socket.h>
67 #include <sys/systm.h>
68 #include <sys/malloc.h>
69 #include <sys/queue.h>
70 #include <sys/taskqueue.h>
71 #include <sys/module.h>
73 #include <sys/endian.h>
74 #include <sys/linker.h>
75 #include <sys/firmware.h>
78 #include <sys/resource.h>
81 #include <bus/pci/pcireg.h>
82 #include <bus/pci/pcivar.h>
86 #include <net/if_arp.h>
87 #include <net/ifq_var.h>
88 #include <net/ethernet.h>
89 #include <net/if_dl.h>
90 #include <net/if_media.h>
91 #include <net/if_types.h>
93 #include <netproto/802_11/ieee80211_var.h>
94 #include <netproto/802_11/ieee80211_radiotap.h>
95 #include <netproto/802_11/ieee80211_regdomain.h>
96 #include <netproto/802_11/ieee80211_ratectl.h>
98 #include <netinet/in.h>
99 #include <netinet/in_systm.h>
100 #include <netinet/in_var.h>
101 #include <netinet/ip.h>
102 #include <netinet/if_ether.h>
104 /* XXX: move elsewhere */
105 #define abs(x) (((x) < 0) ? -(x) : (x))
107 #include "if_wpireg.h"
108 #include "if_wpivar.h"
113 #define DPRINTF(x) do { if (wpi_debug != 0) kprintf x; } while (0)
114 #define DPRINTFN(n, x) do { if (wpi_debug & n) kprintf x; } while (0)
115 #define WPI_DEBUG_SET (wpi_debug != 0)
118 WPI_DEBUG_UNUSED = 0x00000001, /* Unused */
119 WPI_DEBUG_HW = 0x00000002, /* Stage 1 (eeprom) debugging */
120 WPI_DEBUG_TX = 0x00000004, /* Stage 2 TX intrp debugging*/
121 WPI_DEBUG_RX = 0x00000008, /* Stage 2 RX intrp debugging */
122 WPI_DEBUG_CMD = 0x00000010, /* Stage 2 CMD intrp debugging*/
123 WPI_DEBUG_FIRMWARE = 0x00000020, /* firmware(9) loading debug */
124 WPI_DEBUG_DMA = 0x00000040, /* DMA (de)allocations/syncs */
125 WPI_DEBUG_SCANNING = 0x00000080, /* Stage 2 Scanning debugging */
126 WPI_DEBUG_NOTIFY = 0x00000100, /* State 2 Noftif intr debug */
127 WPI_DEBUG_TEMP = 0x00000200, /* TXPower/Temp Calibration */
128 WPI_DEBUG_OPS = 0x00000400, /* wpi_ops taskq debug */
129 WPI_DEBUG_WATCHDOG = 0x00000800, /* Watch dog debug */
130 WPI_DEBUG_ANY = 0xffffffff
133 static int wpi_debug = 1;
134 SYSCTL_INT(_debug, OID_AUTO, wpi, CTLFLAG_RW, &wpi_debug, 0, "wpi debug level");
135 TUNABLE_INT("debug.wpi", &wpi_debug);
139 #define DPRINTFN(n, x)
140 #define WPI_DEBUG_SET 0
150 static const struct wpi_ident wpi_ident_table[] = {
151 /* The below entries support ABG regardless of the subid */
152 { 0x8086, 0x4222, 0x0, "Intel(R) PRO/Wireless 3945ABG" },
153 { 0x8086, 0x4227, 0x0, "Intel(R) PRO/Wireless 3945ABG" },
154 /* The below entries only support BG */
155 { 0x8086, 0x4222, 0x1005, "Intel(R) PRO/Wireless 3945BG" },
156 { 0x8086, 0x4222, 0x1034, "Intel(R) PRO/Wireless 3945BG" },
157 { 0x8086, 0x4227, 0x1014, "Intel(R) PRO/Wireless 3945BG" },
158 { 0x8086, 0x4222, 0x1044, "Intel(R) PRO/Wireless 3945BG" },
162 static struct ieee80211vap *wpi_vap_create(struct ieee80211com *,
163 const char name[IFNAMSIZ], int unit, int opmode,
164 int flags, const uint8_t bssid[IEEE80211_ADDR_LEN],
165 const uint8_t mac[IEEE80211_ADDR_LEN]);
166 static void wpi_vap_delete(struct ieee80211vap *);
167 static int wpi_dma_contig_alloc(struct wpi_softc *, struct wpi_dma_info *,
168 void **, bus_size_t, bus_size_t, int);
169 static void wpi_dma_contig_free(struct wpi_dma_info *);
170 static void wpi_dma_map_addr(void *, bus_dma_segment_t *, int, int);
171 static int wpi_alloc_shared(struct wpi_softc *);
172 static void wpi_free_shared(struct wpi_softc *);
173 static int wpi_alloc_rx_ring(struct wpi_softc *, struct wpi_rx_ring *);
174 static void wpi_reset_rx_ring(struct wpi_softc *, struct wpi_rx_ring *);
175 static void wpi_free_rx_ring(struct wpi_softc *, struct wpi_rx_ring *);
176 static int wpi_alloc_tx_ring(struct wpi_softc *, struct wpi_tx_ring *,
178 static void wpi_reset_tx_ring(struct wpi_softc *, struct wpi_tx_ring *);
179 static void wpi_free_tx_ring(struct wpi_softc *, struct wpi_tx_ring *);
180 static struct ieee80211_node *wpi_node_alloc(struct ieee80211vap *,
181 const uint8_t mac[IEEE80211_ADDR_LEN]);
182 static int wpi_newstate(struct ieee80211vap *, enum ieee80211_state, int);
183 static void wpi_mem_lock(struct wpi_softc *);
184 static void wpi_mem_unlock(struct wpi_softc *);
185 static uint32_t wpi_mem_read(struct wpi_softc *, uint16_t);
186 static void wpi_mem_write(struct wpi_softc *, uint16_t, uint32_t);
187 static void wpi_mem_write_region_4(struct wpi_softc *, uint16_t,
188 const uint32_t *, int);
189 static uint16_t wpi_read_prom_data(struct wpi_softc *, uint32_t, void *, int);
190 static int wpi_alloc_fwmem(struct wpi_softc *);
191 static void wpi_free_fwmem(struct wpi_softc *);
192 static int wpi_load_firmware(struct wpi_softc *);
193 static void wpi_unload_firmware(struct wpi_softc *);
194 static int wpi_load_microcode(struct wpi_softc *, const uint8_t *, int);
195 static void wpi_rx_intr(struct wpi_softc *, struct wpi_rx_desc *,
196 struct wpi_rx_data *);
197 static void wpi_tx_intr(struct wpi_softc *, struct wpi_rx_desc *);
198 static void wpi_cmd_intr(struct wpi_softc *, struct wpi_rx_desc *);
199 static void wpi_notif_intr(struct wpi_softc *);
200 static void wpi_intr(void *);
201 static uint8_t wpi_plcp_signal(int);
202 static void wpi_watchdog_callout(void *);
203 static int wpi_tx_data(struct wpi_softc *, struct mbuf *,
204 struct ieee80211_node *, int);
205 static void wpi_start(struct ifnet *, struct ifaltq_subque *);
206 static void wpi_start_locked(struct ifnet *);
207 static int wpi_raw_xmit(struct ieee80211_node *, struct mbuf *,
208 const struct ieee80211_bpf_params *);
209 static void wpi_scan_start(struct ieee80211com *);
210 static void wpi_scan_end(struct ieee80211com *);
211 static void wpi_set_channel(struct ieee80211com *);
212 static void wpi_scan_curchan(struct ieee80211_scan_state *, unsigned long);
213 static void wpi_scan_mindwell(struct ieee80211_scan_state *);
214 static int wpi_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
215 static void wpi_read_eeprom(struct wpi_softc *,
216 uint8_t macaddr[IEEE80211_ADDR_LEN]);
217 static void wpi_read_eeprom_channels(struct wpi_softc *, int);
218 static void wpi_read_eeprom_group(struct wpi_softc *, int);
219 static int wpi_cmd(struct wpi_softc *, int, const void *, int, int);
220 static int wpi_wme_update(struct ieee80211com *);
221 static int wpi_mrr_setup(struct wpi_softc *);
222 static void wpi_set_led(struct wpi_softc *, uint8_t, uint8_t, uint8_t);
223 static void wpi_enable_tsf(struct wpi_softc *, struct ieee80211_node *);
225 static int wpi_setup_beacon(struct wpi_softc *, struct ieee80211_node *);
227 static int wpi_auth(struct wpi_softc *, struct ieee80211vap *);
228 static int wpi_run(struct wpi_softc *, struct ieee80211vap *);
229 static int wpi_scan(struct wpi_softc *);
230 static int wpi_config(struct wpi_softc *);
231 static void wpi_stop_master(struct wpi_softc *);
232 static int wpi_power_up(struct wpi_softc *);
233 static int wpi_reset(struct wpi_softc *);
234 static void wpi_hwreset_task(void *, int);
235 static void wpi_rfreset_task(void *, int);
236 static void wpi_hw_config(struct wpi_softc *);
237 static void wpi_init(void *);
238 static void wpi_init_locked(struct wpi_softc *, int);
239 static void wpi_stop(struct wpi_softc *);
240 static void wpi_stop_locked(struct wpi_softc *);
242 static void wpi_newassoc(struct ieee80211_node *, int);
243 static int wpi_set_txpower(struct wpi_softc *, struct ieee80211_channel *,
245 static void wpi_calib_timeout_callout(void *);
246 static void wpi_power_calibration(struct wpi_softc *, int);
247 static int wpi_get_power_index(struct wpi_softc *,
248 struct wpi_power_group *, struct ieee80211_channel *, int);
250 static const char *wpi_cmd_str(int);
252 static int wpi_probe(device_t);
253 static int wpi_attach(device_t);
254 static int wpi_detach(device_t);
255 static int wpi_shutdown(device_t);
256 static int wpi_suspend(device_t);
257 static int wpi_resume(device_t);
260 static device_method_t wpi_methods[] = {
261 /* Device interface */
262 DEVMETHOD(device_probe, wpi_probe),
263 DEVMETHOD(device_attach, wpi_attach),
264 DEVMETHOD(device_detach, wpi_detach),
265 DEVMETHOD(device_shutdown, wpi_shutdown),
266 DEVMETHOD(device_suspend, wpi_suspend),
267 DEVMETHOD(device_resume, wpi_resume),
272 static driver_t wpi_driver = {
275 sizeof (struct wpi_softc)
278 static devclass_t wpi_devclass;
280 DRIVER_MODULE(wpi, pci, wpi_driver, wpi_devclass, NULL, NULL);
282 static const uint8_t wpi_ridx_to_plcp[] = {
283 /* OFDM: IEEE Std 802.11a-1999, pp. 14 Table 80 */
284 /* R1-R4 (ral/ural is R4-R1) */
285 0xd, 0xf, 0x5, 0x7, 0x9, 0xb, 0x1, 0x3,
286 /* CCK: device-dependent */
289 static const uint8_t wpi_ridx_to_rate[] = {
290 12, 18, 24, 36, 48, 72, 96, 108, /* OFDM */
291 2, 4, 11, 22 /*CCK */
296 wpi_probe(device_t dev)
298 const struct wpi_ident *ident;
300 wlan_serialize_enter();
301 for (ident = wpi_ident_table; ident->name != NULL; ident++) {
302 if (pci_get_vendor(dev) == ident->vendor &&
303 pci_get_device(dev) == ident->device) {
304 device_set_desc(dev, ident->name);
305 wlan_serialize_exit();
309 wlan_serialize_exit();
314 * Load the firmare image from disk to the allocated dma buffer.
315 * we also maintain the reference to the firmware pointer as there
316 * is times where we may need to reload the firmware but we are not
317 * in a context that can access the filesystem (ie taskq cause by restart)
319 * @return 0 on success, an errno on failure
322 wpi_load_firmware(struct wpi_softc *sc)
324 const struct firmware *fp;
325 struct wpi_dma_info *dma = &sc->fw_dma;
326 const struct wpi_firmware_hdr *hdr;
327 const uint8_t *itext, *idata, *rtext, *rdata, *btext;
328 uint32_t itextsz, idatasz, rtextsz, rdatasz, btextsz;
331 DPRINTFN(WPI_DEBUG_FIRMWARE,
332 ("Attempting Loading Firmware from wpi_fw module\n"));
334 wlan_assert_serialized();
335 wlan_serialize_exit();
336 if (sc->fw_fp == NULL && (sc->fw_fp = firmware_get("wpifw")) == NULL) {
337 device_printf(sc->sc_dev,
338 "could not load firmware image 'wpifw_fw'\n");
340 wlan_serialize_enter();
343 wlan_serialize_enter();
347 /* Validate the firmware is minimum a particular version */
348 if (fp->version < WPI_FW_MINVERSION) {
349 device_printf(sc->sc_dev,
350 "firmware version is too old. Need %d, got %d\n",
357 if (fp->datasize < sizeof (struct wpi_firmware_hdr)) {
358 device_printf(sc->sc_dev,
359 "firmware file too short: %zu bytes\n", fp->datasize);
364 hdr = (const struct wpi_firmware_hdr *)fp->data;
366 /* | RUNTIME FIRMWARE | INIT FIRMWARE | BOOT FW |
367 |HDR|<--TEXT-->|<--DATA-->|<--TEXT-->|<--DATA-->|<--TEXT-->| */
369 rtextsz = le32toh(hdr->rtextsz);
370 rdatasz = le32toh(hdr->rdatasz);
371 itextsz = le32toh(hdr->itextsz);
372 idatasz = le32toh(hdr->idatasz);
373 btextsz = le32toh(hdr->btextsz);
375 /* check that all firmware segments are present */
376 if (fp->datasize < sizeof (struct wpi_firmware_hdr) +
377 rtextsz + rdatasz + itextsz + idatasz + btextsz) {
378 device_printf(sc->sc_dev,
379 "firmware file too short: %zu bytes\n", fp->datasize);
380 error = ENXIO; /* XXX appropriate error code? */
384 /* get pointers to firmware segments */
385 rtext = (const uint8_t *)(hdr + 1);
386 rdata = rtext + rtextsz;
387 itext = rdata + rdatasz;
388 idata = itext + itextsz;
389 btext = idata + idatasz;
391 DPRINTFN(WPI_DEBUG_FIRMWARE,
392 ("Firmware Version: Major %d, Minor %d, Driver %d, \n"
393 "runtime (text: %u, data: %u) init (text: %u, data %u) boot (text %u)\n",
394 (le32toh(hdr->version) & 0xff000000) >> 24,
395 (le32toh(hdr->version) & 0x00ff0000) >> 16,
396 (le32toh(hdr->version) & 0x0000ffff),
398 itextsz, idatasz, btextsz));
400 DPRINTFN(WPI_DEBUG_FIRMWARE,("rtext 0x%x\n", *(const uint32_t *)rtext));
401 DPRINTFN(WPI_DEBUG_FIRMWARE,("rdata 0x%x\n", *(const uint32_t *)rdata));
402 DPRINTFN(WPI_DEBUG_FIRMWARE,("itext 0x%x\n", *(const uint32_t *)itext));
403 DPRINTFN(WPI_DEBUG_FIRMWARE,("idata 0x%x\n", *(const uint32_t *)idata));
404 DPRINTFN(WPI_DEBUG_FIRMWARE,("btext 0x%x\n", *(const uint32_t *)btext));
407 if (rtextsz > WPI_FW_MAIN_TEXT_MAXSZ ||
408 rdatasz > WPI_FW_MAIN_DATA_MAXSZ ||
409 itextsz > WPI_FW_INIT_TEXT_MAXSZ ||
410 idatasz > WPI_FW_INIT_DATA_MAXSZ ||
411 btextsz > WPI_FW_BOOT_TEXT_MAXSZ ||
412 (btextsz & 3) != 0) {
413 device_printf(sc->sc_dev, "firmware invalid\n");
418 /* copy initialization images into pre-allocated DMA-safe memory */
419 memcpy(dma->vaddr, idata, idatasz);
420 memcpy(dma->vaddr + WPI_FW_INIT_DATA_MAXSZ, itext, itextsz);
422 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
424 /* tell adapter where to find initialization images */
426 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr);
427 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, idatasz);
428 wpi_mem_write(sc, WPI_MEM_TEXT_BASE,
429 dma->paddr + WPI_FW_INIT_DATA_MAXSZ);
430 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, itextsz);
433 /* load firmware boot code */
434 if ((error = wpi_load_microcode(sc, btext, btextsz)) != 0) {
435 device_printf(sc->sc_dev, "Failed to load microcode\n");
439 /* now press "execute" */
440 WPI_WRITE(sc, WPI_RESET, 0);
442 /* wait at most one second for the first alive notification */
443 if ((error = zsleep(sc, &wlan_global_serializer, 0, "wpiinit", hz)) != 0) {
444 device_printf(sc->sc_dev,
445 "timeout waiting for adapter to initialize\n");
449 /* copy runtime images into pre-allocated DMA-sage memory */
450 memcpy(dma->vaddr, rdata, rdatasz);
451 memcpy(dma->vaddr + WPI_FW_MAIN_DATA_MAXSZ, rtext, rtextsz);
452 bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
454 /* tell adapter where to find runtime images */
456 wpi_mem_write(sc, WPI_MEM_DATA_BASE, dma->paddr);
457 wpi_mem_write(sc, WPI_MEM_DATA_SIZE, rdatasz);
458 wpi_mem_write(sc, WPI_MEM_TEXT_BASE,
459 dma->paddr + WPI_FW_MAIN_DATA_MAXSZ);
460 wpi_mem_write(sc, WPI_MEM_TEXT_SIZE, WPI_FW_UPDATED | rtextsz);
463 /* wait at most one second for the first alive notification */
464 if ((error = zsleep(sc, &wlan_global_serializer, 0, "wpiinit", hz)) != 0) {
465 device_printf(sc->sc_dev,
466 "timeout waiting for adapter to initialize2\n");
470 DPRINTFN(WPI_DEBUG_FIRMWARE,
471 ("Firmware loaded to driver successfully\n"));
474 wpi_unload_firmware(sc);
479 * Free the referenced firmware image
482 wpi_unload_firmware(struct wpi_softc *sc)
485 wlan_assert_serialized();
486 wlan_serialize_exit();
487 firmware_put(sc->fw_fp, FIRMWARE_UNLOAD);
488 wlan_serialize_enter();
494 wpi_attach(device_t dev)
496 struct wpi_softc *sc;
498 struct ieee80211com *ic;
499 int ac, error, supportsa = 1;
501 const struct wpi_ident *ident;
502 uint8_t macaddr[IEEE80211_ADDR_LEN];
504 wlan_serialize_enter();
505 sc = device_get_softc(dev);
508 if (bootverbose || WPI_DEBUG_SET)
509 device_printf(sc->sc_dev,"Driver Revision %s\n", VERSION);
512 * Some card's only support 802.11b/g not a, check to see if
513 * this is one such card. A 0x0 in the subdevice table indicates
514 * the entire subdevice range is to be ignored.
516 for (ident = wpi_ident_table; ident->name != NULL; ident++) {
517 if (ident->subdevice &&
518 pci_get_subdevice(dev) == ident->subdevice) {
524 /* Create the tasks that can be queued */
525 TASK_INIT(&sc->sc_restarttask, 0, wpi_hwreset_task, sc);
526 TASK_INIT(&sc->sc_radiotask, 0, wpi_rfreset_task, sc);
528 callout_init(&sc->calib_to_callout);
529 callout_init(&sc->watchdog_to_callout);
531 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
532 device_printf(dev, "chip is in D%d power mode "
533 "-- setting to D0\n", pci_get_powerstate(dev));
534 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
537 /* disable the retry timeout register */
538 pci_write_config(dev, 0x41, 0, 1);
540 /* enable bus-mastering */
541 pci_enable_busmaster(dev);
543 sc->mem_rid = PCIR_BAR(0);
544 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
546 if (sc->mem == NULL) {
547 device_printf(dev, "could not allocate memory resource\n");
552 sc->sc_st = rman_get_bustag(sc->mem);
553 sc->sc_sh = rman_get_bushandle(sc->mem);
556 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
557 RF_ACTIVE | RF_SHAREABLE);
558 if (sc->irq == NULL) {
559 device_printf(dev, "could not allocate interrupt resource\n");
565 * Allocate DMA memory for firmware transfers.
567 if ((error = wpi_alloc_fwmem(sc)) != 0) {
568 kprintf(": could not allocate firmware memory\n");
574 * Put adapter into a known state.
576 if ((error = wpi_reset(sc)) != 0) {
577 device_printf(dev, "could not reset adapter\n");
582 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV);
583 if (bootverbose || WPI_DEBUG_SET)
584 device_printf(sc->sc_dev, "Hardware Revision (0x%X)\n", tmp);
588 /* Allocate shared page */
589 if ((error = wpi_alloc_shared(sc)) != 0) {
590 device_printf(dev, "could not allocate shared page\n");
594 /* tx data queues - 4 for QoS purposes */
595 for (ac = 0; ac < WME_NUM_AC; ac++) {
596 error = wpi_alloc_tx_ring(sc, &sc->txq[ac], WPI_TX_RING_COUNT, ac);
598 device_printf(dev, "could not allocate Tx ring %d\n",ac);
603 /* command queue to talk to the card's firmware */
604 error = wpi_alloc_tx_ring(sc, &sc->cmdq, WPI_CMD_RING_COUNT, 4);
606 device_printf(dev, "could not allocate command ring\n");
610 /* receive data queue */
611 error = wpi_alloc_rx_ring(sc, &sc->rxq);
613 device_printf(dev, "could not allocate Rx ring\n");
617 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
619 device_printf(dev, "can not if_alloc()\n");
626 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
627 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */
629 /* set device capabilities */
631 IEEE80211_C_STA /* station mode supported */
632 | IEEE80211_C_MONITOR /* monitor mode supported */
633 | IEEE80211_C_TXPMGT /* tx power management */
634 | IEEE80211_C_SHSLOT /* short slot time supported */
635 | IEEE80211_C_SHPREAMBLE /* short preamble supported */
636 | IEEE80211_C_WPA /* 802.11i */
637 /* XXX looks like WME is partly supported? */
639 | IEEE80211_C_IBSS /* IBSS mode support */
640 | IEEE80211_C_BGSCAN /* capable of bg scanning */
641 | IEEE80211_C_WME /* 802.11e */
642 | IEEE80211_C_HOSTAP /* Host access point mode */
647 * Read in the eeprom and also setup the channels for
648 * net80211. We don't set the rates as net80211 does this for us
650 wpi_read_eeprom(sc, macaddr);
652 if (bootverbose || WPI_DEBUG_SET) {
653 device_printf(sc->sc_dev, "Regulatory Domain: %.4s\n", sc->domain);
654 device_printf(sc->sc_dev, "Hardware Type: %c\n",
655 sc->type > 1 ? 'B': '?');
656 device_printf(sc->sc_dev, "Hardware Revision: %c\n",
657 ((le16toh(sc->rev) & 0xf0) == 0xd0) ? 'D': '?');
658 device_printf(sc->sc_dev, "SKU %s support 802.11a\n",
659 supportsa ? "does" : "does not");
661 /* XXX hw_config uses the PCIDEV for the Hardware rev. Must check
662 what sc->rev really represents - benjsc 20070615 */
665 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
667 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
668 ifp->if_init = wpi_init;
669 ifp->if_ioctl = wpi_ioctl;
670 ifp->if_start = wpi_start;
671 ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
672 ifq_set_ready(&ifp->if_snd);
674 ieee80211_ifattach(ic, macaddr);
675 /* override default methods */
676 ic->ic_node_alloc = wpi_node_alloc;
677 ic->ic_newassoc = wpi_newassoc;
678 ic->ic_raw_xmit = wpi_raw_xmit;
679 ic->ic_wme.wme_update = wpi_wme_update;
680 ic->ic_scan_start = wpi_scan_start;
681 ic->ic_scan_end = wpi_scan_end;
682 ic->ic_set_channel = wpi_set_channel;
683 ic->ic_scan_curchan = wpi_scan_curchan;
684 ic->ic_scan_mindwell = wpi_scan_mindwell;
686 ic->ic_vap_create = wpi_vap_create;
687 ic->ic_vap_delete = wpi_vap_delete;
689 ieee80211_radiotap_attach(ic,
690 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
691 WPI_TX_RADIOTAP_PRESENT,
692 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
693 WPI_RX_RADIOTAP_PRESENT);
696 * Hook our interrupt after all initialization is complete.
698 error = bus_setup_intr(dev, sc->irq, INTR_MPSAFE,
699 wpi_intr, sc, &sc->sc_ih, &wlan_global_serializer);
701 device_printf(dev, "could not set up interrupt\n");
706 ieee80211_announce(ic);
708 ieee80211_announce_channels(ic);
710 wlan_serialize_exit();
714 wlan_serialize_exit();
720 wpi_detach(device_t dev)
722 struct wpi_softc *sc;
724 struct ieee80211com *ic;
727 wlan_serialize_enter();
728 sc = device_get_softc(dev);
733 ieee80211_draintask(ic, &sc->sc_restarttask);
734 ieee80211_draintask(ic, &sc->sc_radiotask);
736 callout_stop(&sc->watchdog_to_callout);
737 callout_stop(&sc->calib_to_callout);
738 ieee80211_ifdetach(ic);
741 if (sc->txq[0].data_dmat) {
742 for (ac = 0; ac < WME_NUM_AC; ac++)
743 wpi_free_tx_ring(sc, &sc->txq[ac]);
745 wpi_free_tx_ring(sc, &sc->cmdq);
746 wpi_free_rx_ring(sc, &sc->rxq);
750 if (sc->fw_fp != NULL) {
751 wpi_unload_firmware(sc);
757 if (sc->irq != NULL) {
758 bus_teardown_intr(dev, sc->irq, sc->sc_ih);
759 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
763 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
768 wlan_serialize_exit();
772 static struct ieee80211vap *
773 wpi_vap_create(struct ieee80211com *ic,
774 const char name[IFNAMSIZ], int unit, int opmode, int flags,
775 const uint8_t bssid[IEEE80211_ADDR_LEN],
776 const uint8_t mac[IEEE80211_ADDR_LEN])
779 struct ieee80211vap *vap;
781 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */
783 wvp = (struct wpi_vap *) kmalloc(sizeof(struct wpi_vap),
784 M_80211_VAP, M_INTWAIT | M_ZERO);
788 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac);
789 /* override with driver methods */
790 wvp->newstate = vap->iv_newstate;
791 vap->iv_newstate = wpi_newstate;
793 ieee80211_ratectl_init(vap);
796 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status);
797 ic->ic_opmode = opmode;
802 wpi_vap_delete(struct ieee80211vap *vap)
804 struct wpi_vap *wvp = WPI_VAP(vap);
806 ieee80211_ratectl_deinit(vap);
807 ieee80211_vap_detach(vap);
808 kfree(wvp, M_80211_VAP);
812 wpi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
817 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs));
819 *(bus_addr_t *)arg = segs[0].ds_addr;
823 * Allocates a contiguous block of dma memory of the requested size and
824 * alignment. Due to limitations of the FreeBSD dma subsystem as of 20071217,
825 * allocations greater than 4096 may fail. Hence if the requested alignment is
826 * greater we allocate 'alignment' size extra memory and shift the vaddr and
827 * paddr after the dma load. This bypasses the problem at the cost of a little
831 wpi_dma_contig_alloc(struct wpi_softc *sc, struct wpi_dma_info *dma,
832 void **kvap, bus_size_t size, bus_size_t alignment, int flags)
838 DPRINTFN(WPI_DEBUG_DMA,
839 ("Size: %zd - alignment %zd\n", size, alignment));
844 if (alignment > 4096) {
846 reqsize = size + alignment;
851 error = bus_dma_tag_create(dma->tag, align,
852 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
857 device_printf(sc->sc_dev,
858 "could not create shared page DMA tag\n");
861 error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr_start,
862 flags | BUS_DMA_ZERO, &dma->map);
864 device_printf(sc->sc_dev,
865 "could not allocate shared page DMA memory\n");
869 error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr_start,
870 reqsize, wpi_dma_map_addr, &dma->paddr_start, flags);
872 /* Save the original pointers so we can free all the memory */
873 dma->paddr = dma->paddr_start;
874 dma->vaddr = dma->vaddr_start;
877 * Check the alignment and increment by 4096 until we get the
878 * requested alignment. Fail if can't obtain the alignment
881 if ((dma->paddr & (alignment -1 )) != 0) {
884 for (i = 0; i < alignment / 4096; i++) {
885 if ((dma->paddr & (alignment - 1 )) == 0)
890 if (i == alignment / 4096) {
891 device_printf(sc->sc_dev,
892 "alignment requirement was not satisfied\n");
898 device_printf(sc->sc_dev,
899 "could not load shared page DMA map\n");
909 wpi_dma_contig_free(dma);
914 wpi_dma_contig_free(struct wpi_dma_info *dma)
917 if (dma->map != NULL) {
918 if (dma->paddr_start != 0) {
919 bus_dmamap_sync(dma->tag, dma->map,
920 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
921 bus_dmamap_unload(dma->tag, dma->map);
923 bus_dmamem_free(dma->tag, &dma->vaddr_start, dma->map);
925 bus_dma_tag_destroy(dma->tag);
930 * Allocate a shared page between host and NIC.
933 wpi_alloc_shared(struct wpi_softc *sc)
937 error = wpi_dma_contig_alloc(sc, &sc->shared_dma,
938 (void **)&sc->shared, sizeof (struct wpi_shared),
943 device_printf(sc->sc_dev,
944 "could not allocate shared area DMA memory\n");
951 wpi_free_shared(struct wpi_softc *sc)
953 wpi_dma_contig_free(&sc->shared_dma);
957 wpi_alloc_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring)
964 error = wpi_dma_contig_alloc(sc, &ring->desc_dma,
965 (void **)&ring->desc, WPI_RX_RING_COUNT * sizeof (uint32_t),
966 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT);
969 device_printf(sc->sc_dev,
970 "%s: could not allocate rx ring DMA memory, error %d\n",
975 error = bus_dma_tag_create(ring->data_dmat, 1, 0,
976 BUS_SPACE_MAXADDR_32BIT,
977 BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE, 1,
978 MJUMPAGESIZE, BUS_DMA_NOWAIT, &ring->data_dmat);
980 device_printf(sc->sc_dev,
981 "%s: bus_dma_tag_create_failed, error %d\n",
989 for (i = 0; i < WPI_RX_RING_COUNT; i++) {
990 struct wpi_rx_data *data = &ring->data[i];
994 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
996 device_printf(sc->sc_dev,
997 "%s: bus_dmamap_create failed, error %d\n",
1001 m = m_getjcl(MB_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
1003 device_printf(sc->sc_dev,
1004 "%s: could not allocate rx mbuf\n", __func__);
1009 error = bus_dmamap_load(ring->data_dmat, data->map,
1010 mtod(m, caddr_t), MJUMPAGESIZE,
1011 wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT);
1012 if (error != 0 && error != EFBIG) {
1013 device_printf(sc->sc_dev,
1014 "%s: bus_dmamap_load failed, error %d\n",
1017 error = ENOMEM; /* XXX unique code */
1020 bus_dmamap_sync(ring->data_dmat, data->map,
1021 BUS_DMASYNC_PREWRITE);
1024 ring->desc[i] = htole32(paddr);
1026 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
1027 BUS_DMASYNC_PREWRITE);
1030 wpi_free_rx_ring(sc, ring);
1035 wpi_reset_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring)
1041 WPI_WRITE(sc, WPI_RX_CONFIG, 0);
1043 for (ntries = 0; ntries < 100; ntries++) {
1044 if (WPI_READ(sc, WPI_RX_STATUS) & WPI_RX_IDLE)
1052 if (ntries == 100 && wpi_debug > 0)
1053 device_printf(sc->sc_dev, "timeout resetting Rx ring\n");
1060 wpi_free_rx_ring(struct wpi_softc *sc, struct wpi_rx_ring *ring)
1064 wpi_dma_contig_free(&ring->desc_dma);
1066 for (i = 0; i < WPI_RX_RING_COUNT; i++)
1067 if (ring->data[i].m != NULL)
1068 m_freem(ring->data[i].m);
1072 wpi_alloc_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring, int count,
1075 struct wpi_tx_data *data;
1079 ring->count = count;
1084 error = wpi_dma_contig_alloc(sc, &ring->desc_dma,
1085 (void **)&ring->desc, count * sizeof (struct wpi_tx_desc),
1086 WPI_RING_DMA_ALIGN, BUS_DMA_NOWAIT);
1089 device_printf(sc->sc_dev, "could not allocate tx dma memory\n");
1093 /* update shared page with ring's base address */
1094 sc->shared->txbase[qid] = htole32(ring->desc_dma.paddr);
1096 error = wpi_dma_contig_alloc(sc, &ring->cmd_dma, (void **)&ring->cmd,
1097 count * sizeof (struct wpi_tx_cmd), WPI_RING_DMA_ALIGN,
1101 device_printf(sc->sc_dev,
1102 "could not allocate tx command DMA memory\n");
1106 ring->data = kmalloc(count * sizeof (struct wpi_tx_data), M_DEVBUF,
1107 M_INTWAIT | M_ZERO);
1108 if (ring->data == NULL) {
1109 device_printf(sc->sc_dev,
1110 "could not allocate tx data slots\n");
1114 error = bus_dma_tag_create(ring->data_dmat, 1, 0,
1115 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MJUMPAGESIZE,
1116 WPI_MAX_SCATTER - 1, MJUMPAGESIZE, BUS_DMA_NOWAIT,
1119 device_printf(sc->sc_dev, "could not create data DMA tag\n");
1123 for (i = 0; i < count; i++) {
1124 data = &ring->data[i];
1126 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
1128 device_printf(sc->sc_dev,
1129 "could not create tx buf DMA map\n");
1132 bus_dmamap_sync(ring->data_dmat, data->map,
1133 BUS_DMASYNC_PREWRITE);
1139 wpi_free_tx_ring(sc, ring);
1144 wpi_reset_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring)
1146 struct wpi_tx_data *data;
1151 WPI_WRITE(sc, WPI_TX_CONFIG(ring->qid), 0);
1152 for (ntries = 0; ntries < 100; ntries++) {
1153 if (WPI_READ(sc, WPI_TX_STATUS) & WPI_TX_IDLE(ring->qid))
1158 if (ntries == 100 && wpi_debug > 0)
1159 device_printf(sc->sc_dev, "timeout resetting Tx ring %d\n",
1164 for (i = 0; i < ring->count; i++) {
1165 data = &ring->data[i];
1167 if (data->m != NULL) {
1168 bus_dmamap_unload(ring->data_dmat, data->map);
1179 wpi_free_tx_ring(struct wpi_softc *sc, struct wpi_tx_ring *ring)
1181 struct wpi_tx_data *data;
1184 wpi_dma_contig_free(&ring->desc_dma);
1185 wpi_dma_contig_free(&ring->cmd_dma);
1187 if (ring->data != NULL) {
1188 for (i = 0; i < ring->count; i++) {
1189 data = &ring->data[i];
1191 if (data->m != NULL) {
1192 bus_dmamap_sync(ring->data_dmat, data->map,
1193 BUS_DMASYNC_POSTWRITE);
1194 bus_dmamap_unload(ring->data_dmat, data->map);
1199 kfree(ring->data, M_DEVBUF);
1202 if (ring->data_dmat != NULL)
1203 bus_dma_tag_destroy(ring->data_dmat);
1207 wpi_shutdown(device_t dev)
1209 struct wpi_softc *sc;
1211 wlan_serialize_enter();
1212 sc = device_get_softc(dev);
1213 wpi_stop_locked(sc);
1214 wpi_unload_firmware(sc);
1215 wlan_serialize_exit();
1221 wpi_suspend(device_t dev)
1223 struct wpi_softc *sc;
1225 wlan_serialize_enter();
1226 sc = device_get_softc(dev);
1228 wlan_serialize_exit();
1233 wpi_resume(device_t dev)
1235 struct wpi_softc *sc;
1238 wlan_serialize_enter();
1239 sc = device_get_softc(dev);
1241 pci_write_config(dev, 0x41, 0, 1);
1243 if (ifp->if_flags & IFF_UP) {
1244 wpi_init(ifp->if_softc);
1245 if (ifp->if_flags & IFF_RUNNING)
1248 wlan_serialize_exit();
1253 static struct ieee80211_node *
1254 wpi_node_alloc(struct ieee80211vap *vap __unused,
1255 const uint8_t mac[IEEE80211_ADDR_LEN] __unused)
1257 struct wpi_node *wn;
1259 wn = kmalloc(sizeof (struct wpi_node), M_80211_NODE, M_INTWAIT | M_ZERO);
1265 * Called by net80211 when ever there is a change to 80211 state machine
1268 wpi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1270 struct wpi_vap *wvp = WPI_VAP(vap);
1271 struct ieee80211com *ic = vap->iv_ic;
1272 struct ifnet *ifp = ic->ic_ifp;
1273 struct wpi_softc *sc = ifp->if_softc;
1276 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
1277 ieee80211_state_name[vap->iv_state],
1278 ieee80211_state_name[nstate], sc->flags));
1280 if (nstate == IEEE80211_S_AUTH) {
1281 /* The node must be registered in the firmware before auth */
1282 error = wpi_auth(sc, vap);
1284 device_printf(sc->sc_dev,
1285 "%s: could not move to auth state, error %d\n",
1289 if (nstate == IEEE80211_S_RUN && vap->iv_state != IEEE80211_S_RUN) {
1290 error = wpi_run(sc, vap);
1292 device_printf(sc->sc_dev,
1293 "%s: could not move to run state, error %d\n",
1297 if (nstate == IEEE80211_S_RUN) {
1298 /* RUN -> RUN transition; just restart the timers */
1299 wpi_calib_timeout_callout(sc);
1300 /* XXX split out rate control timer */
1302 return wvp->newstate(vap, nstate, arg);
1306 * Grab exclusive access to NIC memory.
1309 wpi_mem_lock(struct wpi_softc *sc)
1314 tmp = WPI_READ(sc, WPI_GPIO_CTL);
1315 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_MAC);
1317 /* spin until we actually get the lock */
1318 for (ntries = 0; ntries < 100; ntries++) {
1319 if ((WPI_READ(sc, WPI_GPIO_CTL) &
1320 (WPI_GPIO_CLOCK | WPI_GPIO_SLEEP)) == WPI_GPIO_CLOCK)
1325 device_printf(sc->sc_dev, "could not lock memory\n");
1329 * Release lock on NIC memory.
1332 wpi_mem_unlock(struct wpi_softc *sc)
1334 uint32_t tmp = WPI_READ(sc, WPI_GPIO_CTL);
1335 WPI_WRITE(sc, WPI_GPIO_CTL, tmp & ~WPI_GPIO_MAC);
1339 wpi_mem_read(struct wpi_softc *sc, uint16_t addr)
1341 WPI_WRITE(sc, WPI_READ_MEM_ADDR, WPI_MEM_4 | addr);
1342 return WPI_READ(sc, WPI_READ_MEM_DATA);
1346 wpi_mem_write(struct wpi_softc *sc, uint16_t addr, uint32_t data)
1348 WPI_WRITE(sc, WPI_WRITE_MEM_ADDR, WPI_MEM_4 | addr);
1349 WPI_WRITE(sc, WPI_WRITE_MEM_DATA, data);
1353 wpi_mem_write_region_4(struct wpi_softc *sc, uint16_t addr,
1354 const uint32_t *data, int wlen)
1356 for (; wlen > 0; wlen--, data++, addr+=4)
1357 wpi_mem_write(sc, addr, *data);
1361 * Read data from the EEPROM. We access EEPROM through the MAC instead of
1362 * using the traditional bit-bang method. Data is read up until len bytes have
1366 wpi_read_prom_data(struct wpi_softc *sc, uint32_t addr, void *data, int len)
1370 uint8_t *out = data;
1374 for (; len > 0; len -= 2, addr++) {
1375 WPI_WRITE(sc, WPI_EEPROM_CTL, addr << 2);
1377 for (ntries = 0; ntries < 10; ntries++) {
1378 if ((val = WPI_READ(sc, WPI_EEPROM_CTL)) & WPI_EEPROM_READY)
1384 device_printf(sc->sc_dev, "could not read EEPROM\n");
1399 * The firmware text and data segments are transferred to the NIC using DMA.
1400 * The driver just copies the firmware into DMA-safe memory and tells the NIC
1401 * where to find it. Once the NIC has copied the firmware into its internal
1402 * memory, we can free our local copy in the driver.
1405 wpi_load_microcode(struct wpi_softc *sc, const uint8_t *fw, int size)
1409 DPRINTFN(WPI_DEBUG_HW,("Loading microcode size 0x%x\n", size));
1411 size /= sizeof(uint32_t);
1415 wpi_mem_write_region_4(sc, WPI_MEM_UCODE_BASE,
1416 (const uint32_t *)fw, size);
1418 wpi_mem_write(sc, WPI_MEM_UCODE_SRC, 0);
1419 wpi_mem_write(sc, WPI_MEM_UCODE_DST, WPI_FW_TEXT);
1420 wpi_mem_write(sc, WPI_MEM_UCODE_SIZE, size);
1423 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_RUN);
1425 /* wait while the adapter is busy copying the firmware */
1426 for (error = 0, ntries = 0; ntries < 1000; ntries++) {
1427 uint32_t status = WPI_READ(sc, WPI_TX_STATUS);
1428 DPRINTFN(WPI_DEBUG_HW,
1429 ("firmware status=0x%x, val=0x%x, result=0x%x\n", status,
1430 WPI_TX_IDLE(6), status & WPI_TX_IDLE(6)));
1431 if (status & WPI_TX_IDLE(6)) {
1432 DPRINTFN(WPI_DEBUG_HW,
1433 ("Status Match! - ntries = %d\n", ntries));
1438 if (ntries == 1000) {
1439 device_printf(sc->sc_dev, "timeout transferring firmware\n");
1443 /* start the microcode executing */
1444 wpi_mem_write(sc, WPI_MEM_UCODE_CTL, WPI_UC_ENABLE);
1452 wpi_rx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc,
1453 struct wpi_rx_data *data)
1455 struct ifnet *ifp = sc->sc_ifp;
1456 struct ieee80211com *ic = ifp->if_l2com;
1457 struct wpi_rx_ring *ring = &sc->rxq;
1458 struct wpi_rx_stat *stat;
1459 struct wpi_rx_head *head;
1460 struct wpi_rx_tail *tail;
1461 struct ieee80211_node *ni;
1462 struct mbuf *m, *mnew;
1466 stat = (struct wpi_rx_stat *)(desc + 1);
1468 if (stat->len > WPI_STAT_MAXLEN) {
1469 device_printf(sc->sc_dev, "invalid rx statistic header\n");
1470 IFNET_STAT_INC(ifp, ierrors, 1);
1474 head = (struct wpi_rx_head *)((caddr_t)(stat + 1) + stat->len);
1475 tail = (struct wpi_rx_tail *)((caddr_t)(head + 1) + le16toh(head->len));
1477 DPRINTFN(WPI_DEBUG_RX, ("rx intr: idx=%d len=%d stat len=%d rssi=%d "
1478 "rate=%x chan=%d tstamp=%ju\n", ring->cur, le32toh(desc->len),
1479 le16toh(head->len), (int8_t)stat->rssi, head->rate, head->chan,
1480 (uintmax_t)le64toh(tail->tstamp)));
1482 /* discard Rx frames with bad CRC early */
1483 if ((le32toh(tail->flags) & WPI_RX_NOERROR) != WPI_RX_NOERROR) {
1484 DPRINTFN(WPI_DEBUG_RX, ("%s: rx flags error %x\n", __func__,
1485 le32toh(tail->flags)));
1486 IFNET_STAT_INC(ifp, ierrors, 1);
1489 if (le16toh(head->len) < sizeof (struct ieee80211_frame)) {
1490 DPRINTFN(WPI_DEBUG_RX, ("%s: frame too short: %d\n", __func__,
1491 le16toh(head->len)));
1492 IFNET_STAT_INC(ifp, ierrors, 1);
1496 /* XXX don't need mbuf, just dma buffer */
1497 mnew = m_getjcl(MB_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
1499 DPRINTFN(WPI_DEBUG_RX, ("%s: no mbuf to restock ring\n",
1501 IFNET_STAT_INC(ifp, ierrors, 1);
1504 error = bus_dmamap_load(ring->data_dmat, data->map,
1505 mtod(mnew, caddr_t), MJUMPAGESIZE,
1506 wpi_dma_map_addr, &paddr, BUS_DMA_NOWAIT);
1507 if (error != 0 && error != EFBIG) {
1508 device_printf(sc->sc_dev,
1509 "%s: bus_dmamap_load failed, error %d\n", __func__, error);
1511 IFNET_STAT_INC(ifp, ierrors, 1);
1514 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1516 /* finalize mbuf and swap in new one */
1518 m->m_pkthdr.rcvif = ifp;
1519 m->m_data = (caddr_t)(head + 1);
1520 m->m_pkthdr.len = m->m_len = le16toh(head->len);
1523 /* update Rx descriptor */
1524 ring->desc[ring->cur] = htole32(paddr);
1526 if (ieee80211_radiotap_active(ic)) {
1527 struct wpi_rx_radiotap_header *tap = &sc->sc_rxtap;
1531 htole16(ic->ic_channels[head->chan].ic_freq);
1532 tap->wr_chan_flags =
1533 htole16(ic->ic_channels[head->chan].ic_flags);
1534 tap->wr_dbm_antsignal = (int8_t)(stat->rssi - WPI_RSSI_OFFSET);
1535 tap->wr_dbm_antnoise = (int8_t)le16toh(stat->noise);
1536 tap->wr_tsft = tail->tstamp;
1537 tap->wr_antenna = (le16toh(head->flags) >> 4) & 0xf;
1538 switch (head->rate) {
1540 case 10: tap->wr_rate = 2; break;
1541 case 20: tap->wr_rate = 4; break;
1542 case 55: tap->wr_rate = 11; break;
1543 case 110: tap->wr_rate = 22; break;
1545 case 0xd: tap->wr_rate = 12; break;
1546 case 0xf: tap->wr_rate = 18; break;
1547 case 0x5: tap->wr_rate = 24; break;
1548 case 0x7: tap->wr_rate = 36; break;
1549 case 0x9: tap->wr_rate = 48; break;
1550 case 0xb: tap->wr_rate = 72; break;
1551 case 0x1: tap->wr_rate = 96; break;
1552 case 0x3: tap->wr_rate = 108; break;
1553 /* unknown rate: should not happen */
1554 default: tap->wr_rate = 0;
1556 if (le16toh(head->flags) & 0x4)
1557 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
1560 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1562 (void) ieee80211_input(ni, m, stat->rssi, 0);
1563 ieee80211_free_node(ni);
1565 (void) ieee80211_input_all(ic, m, stat->rssi, 0);
1569 wpi_tx_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc)
1571 struct ifnet *ifp = sc->sc_ifp;
1572 struct wpi_tx_ring *ring = &sc->txq[desc->qid & 0x3];
1573 struct wpi_tx_data *txdata = &ring->data[desc->idx];
1574 struct wpi_tx_stat *stat = (struct wpi_tx_stat *)(desc + 1);
1575 struct ieee80211_node *ni = txdata->ni;
1576 struct ieee80211vap *vap = ni->ni_vap;
1579 DPRINTFN(WPI_DEBUG_TX, ("tx done: qid=%d idx=%d retries=%d nkill=%d "
1580 "rate=%x duration=%d status=%x\n", desc->qid, desc->idx,
1581 stat->ntries, stat->nkill, stat->rate, le32toh(stat->duration),
1582 le32toh(stat->status)));
1585 * Update rate control statistics for the node.
1586 * XXX we should not count mgmt frames since they're always sent at
1587 * the lowest available bit-rate.
1588 * XXX frames w/o ACK shouldn't be used either
1590 if (stat->ntries > 0) {
1591 DPRINTFN(WPI_DEBUG_TX, ("%d retries\n", stat->ntries));
1594 ieee80211_ratectl_tx_complete(vap, ni, IEEE80211_RATECTL_TX_SUCCESS,
1597 /* XXX oerrors should only count errors !maxtries */
1598 if ((le32toh(stat->status) & 0xff) != 1)
1599 IFNET_STAT_INC(ifp, oerrors, 1);
1601 IFNET_STAT_INC(ifp, opackets, 1);
1603 bus_dmamap_sync(ring->data_dmat, txdata->map, BUS_DMASYNC_POSTWRITE);
1604 bus_dmamap_unload(ring->data_dmat, txdata->map);
1605 /* XXX handle M_TXCB? */
1608 ieee80211_free_node(txdata->ni);
1613 sc->sc_tx_timer = 0;
1614 ifq_clr_oactive(&ifp->if_snd);
1615 wpi_start_locked(ifp);
1619 wpi_cmd_intr(struct wpi_softc *sc, struct wpi_rx_desc *desc)
1621 struct wpi_tx_ring *ring = &sc->cmdq;
1622 struct wpi_tx_data *data;
1624 DPRINTFN(WPI_DEBUG_CMD, ("cmd notification qid=%x idx=%d flags=%x "
1625 "type=%s len=%d\n", desc->qid, desc->idx,
1626 desc->flags, wpi_cmd_str(desc->type),
1627 le32toh(desc->len)));
1629 if ((desc->qid & 7) != 4)
1630 return; /* not a command ack */
1632 data = &ring->data[desc->idx];
1634 /* if the command was mapped in a mbuf, free it */
1635 if (data->m != NULL) {
1636 bus_dmamap_unload(ring->data_dmat, data->map);
1641 sc->flags &= ~WPI_FLAG_BUSY;
1642 wakeup(&ring->cmd[desc->idx]);
1646 wpi_notif_intr(struct wpi_softc *sc)
1648 struct ifnet *ifp = sc->sc_ifp;
1649 struct ieee80211com *ic = ifp->if_l2com;
1650 struct wpi_rx_desc *desc;
1651 struct wpi_rx_data *data;
1654 hw = le32toh(sc->shared->next);
1655 while (sc->rxq.cur != hw) {
1656 data = &sc->rxq.data[sc->rxq.cur];
1657 desc = (void *)data->m->m_ext.ext_buf;
1659 DPRINTFN(WPI_DEBUG_NOTIFY,
1660 ("notify qid=%x idx=%d flags=%x type=%d len=%d\n",
1665 le32toh(desc->len)));
1667 if (!(desc->qid & 0x80)) /* reply to a command */
1668 wpi_cmd_intr(sc, desc);
1670 switch (desc->type) {
1672 /* a 802.11 frame was received */
1673 wpi_rx_intr(sc, desc, data);
1677 /* a 802.11 frame has been transmitted */
1678 wpi_tx_intr(sc, desc);
1683 struct wpi_ucode_info *uc =
1684 (struct wpi_ucode_info *)(desc + 1);
1686 /* the microcontroller is ready */
1687 DPRINTF(("microcode alive notification version %x "
1688 "alive %x\n", le32toh(uc->version),
1689 le32toh(uc->valid)));
1691 if (le32toh(uc->valid) != 1) {
1692 device_printf(sc->sc_dev,
1693 "microcontroller initialization failed\n");
1694 wpi_stop_locked(sc);
1698 case WPI_STATE_CHANGED:
1700 uint32_t *status = (uint32_t *)(desc + 1);
1702 /* enabled/disabled notification */
1703 DPRINTF(("state changed to %x\n", le32toh(*status)));
1705 if (le32toh(*status) & 1) {
1706 device_printf(sc->sc_dev,
1707 "Radio transmitter is switched off\n");
1708 sc->flags |= WPI_FLAG_HW_RADIO_OFF;
1709 ifp->if_flags &= ~IFF_RUNNING;
1710 /* Disable firmware commands */
1711 WPI_WRITE(sc, WPI_UCODE_SET, WPI_DISABLE_CMD);
1715 case WPI_START_SCAN:
1718 struct wpi_start_scan *scan =
1719 (struct wpi_start_scan *)(desc + 1);
1722 DPRINTFN(WPI_DEBUG_SCANNING,
1723 ("scanning channel %d status %x\n",
1724 scan->chan, le32toh(scan->status)));
1730 struct wpi_stop_scan *scan =
1731 (struct wpi_stop_scan *)(desc + 1);
1733 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1735 DPRINTFN(WPI_DEBUG_SCANNING,
1736 ("scan finished nchan=%d status=%d chan=%d\n",
1737 scan->nchan, scan->status, scan->chan));
1739 sc->sc_scan_timer = 0;
1740 ieee80211_scan_next(vap);
1743 case WPI_MISSED_BEACON:
1745 struct wpi_missed_beacon *beacon =
1746 (struct wpi_missed_beacon *)(desc + 1);
1747 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1749 if (le32toh(beacon->consecutive) >=
1750 vap->iv_bmissthreshold) {
1751 DPRINTF(("Beacon miss: %u >= %u\n",
1752 le32toh(beacon->consecutive),
1753 vap->iv_bmissthreshold));
1754 ieee80211_beacon_miss(ic);
1760 sc->rxq.cur = (sc->rxq.cur + 1) % WPI_RX_RING_COUNT;
1763 /* tell the firmware what we have processed */
1764 hw = (hw == 0) ? WPI_RX_RING_COUNT - 1 : hw - 1;
1765 WPI_WRITE(sc, WPI_RX_WIDX, hw & ~7);
1771 struct wpi_softc *sc = arg;
1774 r = WPI_READ(sc, WPI_INTR);
1775 if (r == 0 || r == 0xffffffff) {
1779 /* disable interrupts */
1780 WPI_WRITE(sc, WPI_MASK, 0);
1781 /* ack interrupts */
1782 WPI_WRITE(sc, WPI_INTR, r);
1784 if (r & (WPI_SW_ERROR | WPI_HW_ERROR)) {
1785 struct ifnet *ifp = sc->sc_ifp;
1786 struct ieee80211com *ic = ifp->if_l2com;
1787 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1789 device_printf(sc->sc_dev, "fatal firmware error\n");
1790 DPRINTFN(6,("(%s)\n", (r & WPI_SW_ERROR) ? "(Software Error)" :
1791 "(Hardware Error)"));
1793 ieee80211_cancel_scan(vap);
1794 ieee80211_runtask(ic, &sc->sc_restarttask);
1795 sc->flags &= ~WPI_FLAG_BUSY;
1799 if (r & WPI_RX_INTR)
1802 if (r & WPI_ALIVE_INTR) /* firmware initialized */
1805 /* re-enable interrupts */
1806 if (sc->sc_ifp->if_flags & IFF_UP)
1807 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK);
1812 wpi_plcp_signal(int rate)
1815 /* CCK rates (returned values are device-dependent) */
1819 case 22: return 110;
1821 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */
1822 /* R1-R4 (ral/ural is R4-R1) */
1823 case 12: return 0xd;
1824 case 18: return 0xf;
1825 case 24: return 0x5;
1826 case 36: return 0x7;
1827 case 48: return 0x9;
1828 case 72: return 0xb;
1829 case 96: return 0x1;
1830 case 108: return 0x3;
1832 /* unsupported rates (should not get there) */
1837 /* quickly determine if a given rate is CCK or OFDM */
1838 #define WPI_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22)
1841 * Construct the data packet for a transmit buffer and acutally put
1842 * the buffer onto the transmit ring, kicking the card to process the
1846 wpi_tx_data(struct wpi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni,
1849 struct ieee80211vap *vap = ni->ni_vap;
1850 struct ifnet *ifp = sc->sc_ifp;
1851 struct ieee80211com *ic = ifp->if_l2com;
1852 const struct chanAccParams *cap = &ic->ic_wme.wme_chanParams;
1853 struct wpi_tx_ring *ring = &sc->txq[ac];
1854 struct wpi_tx_desc *desc;
1855 struct wpi_tx_data *data;
1856 struct wpi_tx_cmd *cmd;
1857 struct wpi_cmd_data *tx;
1858 struct ieee80211_frame *wh;
1859 const struct ieee80211_txparam *tp;
1860 struct ieee80211_key *k;
1862 int i, error, nsegs, rate, hdrlen, ismcast;
1863 bus_dma_segment_t segs[WPI_MAX_SCATTER];
1865 desc = &ring->desc[ring->cur];
1866 data = &ring->data[ring->cur];
1868 wh = mtod(m0, struct ieee80211_frame *);
1870 hdrlen = ieee80211_hdrsize(wh);
1871 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
1873 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1874 k = ieee80211_crypto_encap(ni, m0);
1879 /* packet header may have moved, reset our local pointer */
1880 wh = mtod(m0, struct ieee80211_frame *);
1883 cmd = &ring->cmd[ring->cur];
1884 cmd->code = WPI_CMD_TX_DATA;
1886 cmd->qid = ring->qid;
1887 cmd->idx = ring->cur;
1889 tx = (struct wpi_cmd_data *)cmd->data;
1890 tx->flags = htole32(WPI_TX_AUTO_SEQ);
1891 tx->timeout = htole16(0);
1892 tx->ofdm_mask = 0xff;
1893 tx->cck_mask = 0x0f;
1894 tx->lifetime = htole32(WPI_LIFETIME_INFINITE);
1895 tx->id = ismcast ? WPI_ID_BROADCAST : WPI_ID_BSS;
1896 tx->len = htole16(m0->m_pkthdr.len);
1899 if ((ni->ni_flags & IEEE80211_NODE_QOS) == 0 ||
1900 !cap->cap_wmeParams[ac].wmep_noackPolicy)
1901 tx->flags |= htole32(WPI_TX_NEED_ACK);
1902 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) {
1903 tx->flags |= htole32(WPI_TX_NEED_RTS|WPI_TX_FULL_TXOP);
1908 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)];
1909 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_MGT) {
1910 uint8_t subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
1911 /* tell h/w to set timestamp in probe responses */
1912 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1913 tx->flags |= htole32(WPI_TX_INSERT_TSTAMP);
1914 if (subtype == IEEE80211_FC0_SUBTYPE_ASSOC_REQ ||
1915 subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ)
1916 tx->timeout = htole16(3);
1918 tx->timeout = htole16(2);
1919 rate = tp->mgmtrate;
1920 } else if (ismcast) {
1921 rate = tp->mcastrate;
1922 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) {
1923 rate = tp->ucastrate;
1925 (void) ieee80211_ratectl_rate(ni, NULL, 0);
1926 rate = ni->ni_txrate;
1928 tx->rate = wpi_plcp_signal(rate);
1930 /* be very persistant at sending frames out */
1932 tx->data_ntries = tp->maxretry;
1934 tx->data_ntries = 30; /* XXX way too high */
1937 if (ieee80211_radiotap_active_vap(vap)) {
1938 struct wpi_tx_radiotap_header *tap = &sc->sc_txtap;
1940 tap->wt_rate = rate;
1941 tap->wt_hwqueue = ac;
1942 if (wh->i_fc[1] & IEEE80211_FC1_WEP)
1943 tap->wt_flags |= IEEE80211_RADIOTAP_F_WEP;
1945 ieee80211_radiotap_tx(vap, m0);
1948 /* save and trim IEEE802.11 header */
1949 m_copydata(m0, 0, hdrlen, (caddr_t)&tx->wh);
1952 error = bus_dmamap_load_mbuf_segment(ring->data_dmat, data->map, m0, segs,
1953 1, &nsegs, BUS_DMA_NOWAIT);
1954 if (error != 0 && error != EFBIG) {
1955 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1961 /* XXX use m_collapse */
1962 mnew = m_defrag(m0, MB_DONTWAIT);
1964 device_printf(sc->sc_dev,
1965 "could not defragment mbuf\n");
1971 error = bus_dmamap_load_mbuf_segment(ring->data_dmat, data->map,
1972 m0, segs, 1, &nsegs, BUS_DMA_NOWAIT);
1974 device_printf(sc->sc_dev,
1975 "could not map mbuf (error %d)\n", error);
1984 DPRINTFN(WPI_DEBUG_TX, ("sending data: qid=%d idx=%d len=%d nsegs=%d\n",
1985 ring->qid, ring->cur, m0->m_pkthdr.len, nsegs));
1987 /* first scatter/gather segment is used by the tx data command */
1988 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 |
1990 desc->segs[0].addr = htole32(ring->cmd_dma.paddr +
1991 ring->cur * sizeof (struct wpi_tx_cmd));
1992 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_data));
1993 for (i = 1; i <= nsegs; i++) {
1994 desc->segs[i].addr = htole32(segs[i - 1].ds_addr);
1995 desc->segs[i].len = htole32(segs[i - 1].ds_len);
1998 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1999 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
2000 BUS_DMASYNC_PREWRITE);
2005 ring->cur = (ring->cur + 1) % WPI_TX_RING_COUNT;
2006 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
2012 * Process data waiting to be sent on the IFNET output queue
2015 wpi_start(struct ifnet *ifp, struct ifaltq_subque *ifsq)
2017 ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq);
2018 wpi_start_locked(ifp);
2022 wpi_start_locked(struct ifnet *ifp)
2024 struct wpi_softc *sc = ifp->if_softc;
2025 struct ieee80211_node *ni;
2029 if ((ifp->if_flags & IFF_RUNNING) == 0) {
2030 ifq_purge(&ifp->if_snd);
2035 m = ifq_dequeue(&ifp->if_snd, NULL);
2038 ac = M_WME_GETAC(m);
2039 if (sc->txq[ac].queued > sc->txq[ac].count - 8) {
2040 /* there is no place left in this ring */
2042 * XXX: we CANNOT do it this way. If something
2043 * is prepended already, this is going to blow.
2045 ifq_set_oactive(&ifp->if_snd);
2046 ifq_prepend(&ifp->if_snd, m);
2049 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
2050 if (wpi_tx_data(sc, m, ni, ac) != 0) {
2051 ieee80211_free_node(ni);
2052 IFNET_STAT_INC(ifp, oerrors, 1);
2055 sc->sc_tx_timer = 5;
2060 wpi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
2061 const struct ieee80211_bpf_params *params)
2063 struct ieee80211com *ic = ni->ni_ic;
2064 struct ifnet *ifp = ic->ic_ifp;
2065 struct wpi_softc *sc = ifp->if_softc;
2067 /* prevent management frames from being sent if we're not ready */
2068 if (!(ifp->if_flags & IFF_RUNNING)) {
2070 ieee80211_free_node(ni);
2074 /* management frames go into ring 0 */
2075 if (sc->txq[0].queued > sc->txq[0].count - 8) {
2076 ifq_set_oactive(&ifp->if_snd);
2078 ieee80211_free_node(ni);
2079 return ENOBUFS; /* XXX */
2082 IFNET_STAT_INC(ifp, opackets, 1);
2083 if (wpi_tx_data(sc, m, ni, 0) != 0)
2085 sc->sc_tx_timer = 5;
2086 callout_reset(&sc->watchdog_to_callout, hz, wpi_watchdog_callout, sc);
2090 IFNET_STAT_INC(ifp, oerrors, 1);
2091 ieee80211_free_node(ni);
2092 return EIO; /* XXX */
2096 wpi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cred)
2098 struct wpi_softc *sc = ifp->if_softc;
2099 struct ieee80211com *ic = ifp->if_l2com;
2100 struct ifreq *ifr = (struct ifreq *) data;
2101 int error = 0, startall = 0;
2105 if ((ifp->if_flags & IFF_UP)) {
2106 if (!(ifp->if_flags & IFF_RUNNING)) {
2107 wpi_init_locked(sc, 0);
2110 } else if ((ifp->if_flags & IFF_RUNNING) ||
2111 (sc->flags & WPI_FLAG_HW_RADIO_OFF))
2112 wpi_stop_locked(sc);
2114 ieee80211_start_all(ic);
2117 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
2120 error = ether_ioctl(ifp, cmd, data);
2130 * Extract various information from EEPROM.
2133 wpi_read_eeprom(struct wpi_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN])
2137 /* read the hardware capabilities, revision and SKU type */
2138 wpi_read_prom_data(sc, WPI_EEPROM_CAPABILITIES, &sc->cap,1);
2139 wpi_read_prom_data(sc, WPI_EEPROM_REVISION, &sc->rev,2);
2140 wpi_read_prom_data(sc, WPI_EEPROM_TYPE, &sc->type, 1);
2142 /* read the regulatory domain */
2143 wpi_read_prom_data(sc, WPI_EEPROM_DOMAIN, sc->domain, 4);
2145 /* read in the hw MAC address */
2146 wpi_read_prom_data(sc, WPI_EEPROM_MAC, macaddr, 6);
2148 /* read the list of authorized channels */
2149 for (i = 0; i < WPI_CHAN_BANDS_COUNT; i++)
2150 wpi_read_eeprom_channels(sc,i);
2152 /* read the power level calibration info for each group */
2153 for (i = 0; i < WPI_POWER_GROUPS_COUNT; i++)
2154 wpi_read_eeprom_group(sc,i);
2158 * Send a command to the firmware.
2161 wpi_cmd(struct wpi_softc *sc, int code, const void *buf, int size, int async)
2163 struct wpi_tx_ring *ring = &sc->cmdq;
2164 struct wpi_tx_desc *desc;
2165 struct wpi_tx_cmd *cmd;
2169 wlan_assert_serialized();
2173 DPRINTFN(WPI_DEBUG_CMD,("wpi_cmd %d size %d async %d\n", code, size,
2176 if (sc->flags & WPI_FLAG_BUSY) {
2177 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n",
2181 sc->flags|= WPI_FLAG_BUSY;
2183 KASSERT(size <= sizeof cmd->data, ("command %d too large: %d bytes",
2186 desc = &ring->desc[ring->cur];
2187 cmd = &ring->cmd[ring->cur];
2191 cmd->qid = ring->qid;
2192 cmd->idx = ring->cur;
2193 memcpy(cmd->data, buf, size);
2195 desc->flags = htole32(WPI_PAD32(size) << 28 | 1 << 24);
2196 desc->segs[0].addr = htole32(ring->cmd_dma.paddr +
2197 ring->cur * sizeof (struct wpi_tx_cmd));
2198 desc->segs[0].len = htole32(4 + size);
2201 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT;
2202 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
2205 sc->flags &= ~ WPI_FLAG_BUSY;
2209 return zsleep(cmd, &wlan_global_serializer, 0, "wpicmd", hz);
2213 wpi_wme_update(struct ieee80211com *ic)
2215 #define WPI_EXP2(v) htole16((1 << (v)) - 1)
2216 #define WPI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v))
2217 struct wpi_softc *sc = ic->ic_ifp->if_softc;
2218 const struct wmeParams *wmep;
2219 struct wpi_wme_setup wme;
2222 /* don't override default WME values if WME is not actually enabled */
2223 if (!(ic->ic_flags & IEEE80211_F_WME))
2227 for (ac = 0; ac < WME_NUM_AC; ac++) {
2228 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac];
2229 wme.ac[ac].aifsn = wmep->wmep_aifsn;
2230 wme.ac[ac].cwmin = WPI_EXP2(wmep->wmep_logcwmin);
2231 wme.ac[ac].cwmax = WPI_EXP2(wmep->wmep_logcwmax);
2232 wme.ac[ac].txop = WPI_USEC(wmep->wmep_txopLimit);
2234 DPRINTF(("setting WME for queue %d aifsn=%d cwmin=%d cwmax=%d "
2235 "txop=%d\n", ac, wme.ac[ac].aifsn, wme.ac[ac].cwmin,
2236 wme.ac[ac].cwmax, wme.ac[ac].txop));
2238 return wpi_cmd(sc, WPI_CMD_SET_WME, &wme, sizeof wme, 1);
2244 * Configure h/w multi-rate retries.
2247 wpi_mrr_setup(struct wpi_softc *sc)
2249 struct ifnet *ifp = sc->sc_ifp;
2250 struct ieee80211com *ic = ifp->if_l2com;
2251 struct wpi_mrr_setup mrr;
2254 memset(&mrr, 0, sizeof (struct wpi_mrr_setup));
2256 /* CCK rates (not used with 802.11a) */
2257 for (i = WPI_CCK1; i <= WPI_CCK11; i++) {
2258 mrr.rates[i].flags = 0;
2259 mrr.rates[i].signal = wpi_ridx_to_plcp[i];
2260 /* fallback to the immediate lower CCK rate (if any) */
2261 mrr.rates[i].next = (i == WPI_CCK1) ? WPI_CCK1 : i - 1;
2262 /* try one time at this rate before falling back to "next" */
2263 mrr.rates[i].ntries = 1;
2266 /* OFDM rates (not used with 802.11b) */
2267 for (i = WPI_OFDM6; i <= WPI_OFDM54; i++) {
2268 mrr.rates[i].flags = 0;
2269 mrr.rates[i].signal = wpi_ridx_to_plcp[i];
2270 /* fallback to the immediate lower OFDM rate (if any) */
2271 /* we allow fallback from OFDM/6 to CCK/2 in 11b/g mode */
2272 mrr.rates[i].next = (i == WPI_OFDM6) ?
2273 ((ic->ic_curmode == IEEE80211_MODE_11A) ?
2274 WPI_OFDM6 : WPI_CCK2) :
2276 /* try one time at this rate before falling back to "next" */
2277 mrr.rates[i].ntries = 1;
2280 /* setup MRR for control frames */
2281 mrr.which = htole32(WPI_MRR_CTL);
2282 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0);
2284 device_printf(sc->sc_dev,
2285 "could not setup MRR for control frames\n");
2289 /* setup MRR for data frames */
2290 mrr.which = htole32(WPI_MRR_DATA);
2291 error = wpi_cmd(sc, WPI_CMD_MRR_SETUP, &mrr, sizeof mrr, 0);
2293 device_printf(sc->sc_dev,
2294 "could not setup MRR for data frames\n");
2302 wpi_set_led(struct wpi_softc *sc, uint8_t which, uint8_t off, uint8_t on)
2304 struct wpi_cmd_led led;
2307 led.unit = htole32(100000); /* on/off in unit of 100ms */
2311 (void)wpi_cmd(sc, WPI_CMD_SET_LED, &led, sizeof led, 1);
2315 wpi_enable_tsf(struct wpi_softc *sc, struct ieee80211_node *ni)
2317 struct wpi_cmd_tsf tsf;
2320 memset(&tsf, 0, sizeof tsf);
2321 memcpy(&tsf.tstamp, ni->ni_tstamp.data, 8);
2322 tsf.bintval = htole16(ni->ni_intval);
2323 tsf.lintval = htole16(10);
2325 /* compute remaining time until next beacon */
2326 val = (uint64_t)ni->ni_intval * 1024; /* msec -> usec */
2327 mod = le64toh(tsf.tstamp) % val;
2328 tsf.binitval = htole32((uint32_t)(val - mod));
2330 if (wpi_cmd(sc, WPI_CMD_TSF, &tsf, sizeof tsf, 1) != 0)
2331 device_printf(sc->sc_dev, "could not enable TSF\n");
2336 * Build a beacon frame that the firmware will broadcast periodically in
2337 * IBSS or HostAP modes.
2340 wpi_setup_beacon(struct wpi_softc *sc, struct ieee80211_node *ni)
2342 struct ifnet *ifp = sc->sc_ifp;
2343 struct ieee80211com *ic = ifp->if_l2com;
2344 struct wpi_tx_ring *ring = &sc->cmdq;
2345 struct wpi_tx_desc *desc;
2346 struct wpi_tx_data *data;
2347 struct wpi_tx_cmd *cmd;
2348 struct wpi_cmd_beacon *bcn;
2349 struct ieee80211_beacon_offsets bo;
2351 bus_addr_t physaddr;
2354 desc = &ring->desc[ring->cur];
2355 data = &ring->data[ring->cur];
2357 m0 = ieee80211_beacon_alloc(ic, ni, &bo);
2359 device_printf(sc->sc_dev, "could not allocate beacon frame\n");
2363 cmd = &ring->cmd[ring->cur];
2364 cmd->code = WPI_CMD_SET_BEACON;
2366 cmd->qid = ring->qid;
2367 cmd->idx = ring->cur;
2369 bcn = (struct wpi_cmd_beacon *)cmd->data;
2370 memset(bcn, 0, sizeof (struct wpi_cmd_beacon));
2371 bcn->id = WPI_ID_BROADCAST;
2372 bcn->ofdm_mask = 0xff;
2373 bcn->cck_mask = 0x0f;
2374 bcn->lifetime = htole32(WPI_LIFETIME_INFINITE);
2375 bcn->len = htole16(m0->m_pkthdr.len);
2376 bcn->rate = (ic->ic_curmode == IEEE80211_MODE_11A) ?
2377 wpi_plcp_signal(12) : wpi_plcp_signal(2);
2378 bcn->flags = htole32(WPI_TX_AUTO_SEQ | WPI_TX_INSERT_TSTAMP);
2380 /* save and trim IEEE802.11 header */
2381 m_copydata(m0, 0, sizeof (struct ieee80211_frame), (caddr_t)&bcn->wh);
2382 m_adj(m0, sizeof (struct ieee80211_frame));
2384 /* assume beacon frame is contiguous */
2385 error = bus_dmamap_load(ring->data_dmat, data->map, mtod(m0, void *),
2386 m0->m_pkthdr.len, wpi_dma_map_addr, &physaddr, 0);
2388 device_printf(sc->sc_dev, "could not map beacon\n");
2395 /* first scatter/gather segment is used by the beacon command */
2396 desc->flags = htole32(WPI_PAD32(m0->m_pkthdr.len) << 28 | 2 << 24);
2397 desc->segs[0].addr = htole32(ring->cmd_dma.paddr +
2398 ring->cur * sizeof (struct wpi_tx_cmd));
2399 desc->segs[0].len = htole32(4 + sizeof (struct wpi_cmd_beacon));
2400 desc->segs[1].addr = htole32(physaddr);
2401 desc->segs[1].len = htole32(m0->m_pkthdr.len);
2404 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT;
2405 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
2412 wpi_auth(struct wpi_softc *sc, struct ieee80211vap *vap)
2414 struct ieee80211com *ic = vap->iv_ic;
2415 struct ieee80211_node *ni;
2416 struct wpi_node_info node;
2420 /* update adapter's configuration */
2421 sc->config.associd = 0;
2422 sc->config.filter &= ~htole32(WPI_FILTER_BSS);
2423 ni = ieee80211_ref_node(vap->iv_bss);
2424 IEEE80211_ADDR_COPY(sc->config.bssid, ni->ni_bssid);
2425 sc->config.chan = ieee80211_chan2ieee(ic, ni->ni_chan);
2426 if (IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) {
2427 sc->config.flags |= htole32(WPI_CONFIG_AUTO |
2430 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) {
2431 sc->config.cck_mask = 0;
2432 sc->config.ofdm_mask = 0x15;
2433 } else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) {
2434 sc->config.cck_mask = 0x03;
2435 sc->config.ofdm_mask = 0;
2437 /* XXX assume 802.11b/g */
2438 sc->config.cck_mask = 0x0f;
2439 sc->config.ofdm_mask = 0x15;
2442 DPRINTF(("config chan %d flags %x cck %x ofdm %x\n", sc->config.chan,
2443 sc->config.flags, sc->config.cck_mask, sc->config.ofdm_mask));
2444 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config,
2445 sizeof (struct wpi_config), 1);
2447 device_printf(sc->sc_dev, "could not configure\n");
2448 ieee80211_free_node(ni);
2452 /* configuration has changed, set Tx power accordingly */
2453 if ((error = wpi_set_txpower(sc, ni->ni_chan, 1)) != 0) {
2454 device_printf(sc->sc_dev, "could not set Tx power\n");
2455 ieee80211_free_node(ni);
2459 /* add default node */
2460 memset(&node, 0, sizeof node);
2461 IEEE80211_ADDR_COPY(node.bssid, ni->ni_bssid);
2462 ieee80211_free_node(ni);
2463 node.id = WPI_ID_BSS;
2464 node.rate = (ic->ic_curmode == IEEE80211_MODE_11A) ?
2465 wpi_plcp_signal(12) : wpi_plcp_signal(2);
2466 node.action = htole32(WPI_ACTION_SET_RATE);
2467 node.antenna = WPI_ANTENNA_BOTH;
2468 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 1);
2470 device_printf(sc->sc_dev, "could not add BSS node\n");
2476 wpi_run(struct wpi_softc *sc, struct ieee80211vap *vap)
2478 struct ieee80211com *ic = vap->iv_ic;
2479 struct ieee80211_node *ni;
2482 if (vap->iv_opmode == IEEE80211_M_MONITOR) {
2483 /* link LED blinks while monitoring */
2484 wpi_set_led(sc, WPI_LED_LINK, 5, 5);
2488 ni = ieee80211_ref_node(vap->iv_bss);
2489 wpi_enable_tsf(sc, ni);
2491 /* update adapter's configuration */
2492 sc->config.associd = htole16(ni->ni_associd & ~0xc000);
2493 /* short preamble/slot time are negotiated when associating */
2494 sc->config.flags &= ~htole32(WPI_CONFIG_SHPREAMBLE |
2496 if (ic->ic_flags & IEEE80211_F_SHSLOT)
2497 sc->config.flags |= htole32(WPI_CONFIG_SHSLOT);
2498 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE)
2499 sc->config.flags |= htole32(WPI_CONFIG_SHPREAMBLE);
2500 sc->config.filter |= htole32(WPI_FILTER_BSS);
2502 /* XXX put somewhere HC_QOS_SUPPORT_ASSOC + HC_IBSS_START */
2504 DPRINTF(("config chan %d flags %x\n", sc->config.chan,
2506 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config, sizeof (struct
2509 device_printf(sc->sc_dev, "could not update configuration\n");
2510 ieee80211_free_node(ni);
2514 error = wpi_set_txpower(sc, ni->ni_chan, 1);
2515 ieee80211_free_node(ni);
2517 device_printf(sc->sc_dev, "could set txpower\n");
2521 /* link LED always on while associated */
2522 wpi_set_led(sc, WPI_LED_LINK, 0, 1);
2524 /* start automatic rate control timer */
2525 callout_reset(&sc->calib_to_callout, 60*hz, wpi_calib_timeout_callout, sc);
2531 * Send a scan request to the firmware. Since this command is huge, we map it
2532 * into a mbufcluster instead of using the pre-allocated set of commands. Note,
2533 * much of this code is similar to that in wpi_cmd but because we must manually
2534 * construct the probe & channels, we duplicate what's needed here. XXX In the
2535 * future, this function should be modified to use wpi_cmd to help cleanup the
2539 wpi_scan(struct wpi_softc *sc)
2541 struct ifnet *ifp = sc->sc_ifp;
2542 struct ieee80211com *ic = ifp->if_l2com;
2543 struct ieee80211_scan_state *ss = ic->ic_scan;
2544 struct wpi_tx_ring *ring = &sc->cmdq;
2545 struct wpi_tx_desc *desc;
2546 struct wpi_tx_data *data;
2547 struct wpi_tx_cmd *cmd;
2548 struct wpi_scan_hdr *hdr;
2549 struct wpi_scan_chan *chan;
2550 struct ieee80211_frame *wh;
2551 struct ieee80211_rateset *rs;
2552 struct ieee80211_channel *c;
2553 enum ieee80211_phymode mode;
2555 int nrates, pktlen, error, i, nssid;
2556 bus_addr_t physaddr;
2558 desc = &ring->desc[ring->cur];
2559 data = &ring->data[ring->cur];
2561 data->m = m_getjcl(MB_DONTWAIT, MT_DATA, M_PKTHDR, MJUMPAGESIZE);
2562 if (data->m == NULL) {
2563 device_printf(sc->sc_dev,
2564 "could not allocate mbuf for scan command\n");
2568 cmd = mtod(data->m, struct wpi_tx_cmd *);
2569 cmd->code = WPI_CMD_SCAN;
2571 cmd->qid = ring->qid;
2572 cmd->idx = ring->cur;
2574 hdr = (struct wpi_scan_hdr *)cmd->data;
2575 memset(hdr, 0, sizeof(struct wpi_scan_hdr));
2578 * Move to the next channel if no packets are received within 5 msecs
2579 * after sending the probe request (this helps to reduce the duration
2582 hdr->quiet = htole16(5);
2583 hdr->threshold = htole16(1);
2585 if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) {
2586 /* send probe requests at 6Mbps */
2587 hdr->tx.rate = wpi_ridx_to_plcp[WPI_OFDM6];
2589 /* Enable crc checking */
2590 hdr->promotion = htole16(1);
2592 hdr->flags = htole32(WPI_CONFIG_24GHZ | WPI_CONFIG_AUTO);
2593 /* send probe requests at 1Mbps */
2594 hdr->tx.rate = wpi_ridx_to_plcp[WPI_CCK1];
2596 hdr->tx.id = WPI_ID_BROADCAST;
2597 hdr->tx.lifetime = htole32(WPI_LIFETIME_INFINITE);
2598 hdr->tx.flags = htole32(WPI_TX_AUTO_SEQ);
2600 memset(hdr->scan_essids, 0, sizeof(hdr->scan_essids));
2601 nssid = MIN(ss->ss_nssid, WPI_SCAN_MAX_ESSIDS);
2602 for (i = 0; i < nssid; i++) {
2603 hdr->scan_essids[i].id = IEEE80211_ELEMID_SSID;
2604 hdr->scan_essids[i].esslen = MIN(ss->ss_ssid[i].len, 32);
2605 memcpy(hdr->scan_essids[i].essid, ss->ss_ssid[i].ssid,
2606 hdr->scan_essids[i].esslen);
2608 if (wpi_debug & WPI_DEBUG_SCANNING) {
2609 kprintf("Scanning Essid: ");
2610 ieee80211_print_essid(hdr->scan_essids[i].essid,
2611 hdr->scan_essids[i].esslen);
2618 * Build a probe request frame. Most of the following code is a
2619 * copy & paste of what is done in net80211.
2621 wh = (struct ieee80211_frame *)&hdr->scan_essids[4];
2622 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_MGT |
2623 IEEE80211_FC0_SUBTYPE_PROBE_REQ;
2624 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS;
2625 IEEE80211_ADDR_COPY(wh->i_addr1, ifp->if_broadcastaddr);
2626 IEEE80211_ADDR_COPY(wh->i_addr2, IF_LLADDR(ifp));
2627 IEEE80211_ADDR_COPY(wh->i_addr3, ifp->if_broadcastaddr);
2628 *(u_int16_t *)&wh->i_dur[0] = 0; /* filled by h/w */
2629 *(u_int16_t *)&wh->i_seq[0] = 0; /* filled by h/w */
2631 frm = (uint8_t *)(wh + 1);
2633 /* add essid IE, the hardware will fill this in for us */
2634 *frm++ = IEEE80211_ELEMID_SSID;
2637 mode = ieee80211_chan2mode(ic->ic_curchan);
2638 rs = &ic->ic_sup_rates[mode];
2640 /* add supported rates IE */
2641 *frm++ = IEEE80211_ELEMID_RATES;
2642 nrates = rs->rs_nrates;
2643 if (nrates > IEEE80211_RATE_SIZE)
2644 nrates = IEEE80211_RATE_SIZE;
2646 memcpy(frm, rs->rs_rates, nrates);
2649 /* add supported xrates IE */
2650 if (rs->rs_nrates > IEEE80211_RATE_SIZE) {
2651 nrates = rs->rs_nrates - IEEE80211_RATE_SIZE;
2652 *frm++ = IEEE80211_ELEMID_XRATES;
2654 memcpy(frm, rs->rs_rates + IEEE80211_RATE_SIZE, nrates);
2658 /* setup length of probe request */
2659 hdr->tx.len = htole16(frm - (uint8_t *)wh);
2662 * Construct information about the channel that we
2663 * want to scan. The firmware expects this to be directly
2664 * after the scan probe request
2667 chan = (struct wpi_scan_chan *)frm;
2668 chan->chan = ieee80211_chan2ieee(ic, c);
2670 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) {
2671 chan->flags |= WPI_CHAN_ACTIVE;
2673 chan->flags |= WPI_CHAN_DIRECT;
2675 chan->gain_dsp = 0x6e; /* Default level */
2676 if (IEEE80211_IS_CHAN_5GHZ(c)) {
2677 chan->active = htole16(10);
2678 chan->passive = htole16(ss->ss_maxdwell);
2679 chan->gain_radio = 0x3b;
2681 chan->active = htole16(20);
2682 chan->passive = htole16(ss->ss_maxdwell);
2683 chan->gain_radio = 0x28;
2686 DPRINTFN(WPI_DEBUG_SCANNING,
2687 ("Scanning %u Passive: %d\n",
2689 c->ic_flags & IEEE80211_CHAN_PASSIVE));
2694 frm += sizeof (struct wpi_scan_chan);
2696 // XXX All Channels....
2697 for (c = &ic->ic_channels[1];
2698 c <= &ic->ic_channels[IEEE80211_CHAN_MAX]; c++) {
2699 if ((c->ic_flags & ic->ic_curchan->ic_flags) != ic->ic_curchan->ic_flags)
2702 chan->chan = ieee80211_chan2ieee(ic, c);
2704 if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) {
2705 chan->flags |= WPI_CHAN_ACTIVE;
2706 if (ic->ic_des_ssid[0].len != 0)
2707 chan->flags |= WPI_CHAN_DIRECT;
2709 chan->gain_dsp = 0x6e; /* Default level */
2710 if (IEEE80211_IS_CHAN_5GHZ(c)) {
2711 chan->active = htole16(10);
2712 chan->passive = htole16(110);
2713 chan->gain_radio = 0x3b;
2715 chan->active = htole16(20);
2716 chan->passive = htole16(120);
2717 chan->gain_radio = 0x28;
2720 DPRINTFN(WPI_DEBUG_SCANNING,
2721 ("Scanning %u Passive: %d\n",
2723 c->ic_flags & IEEE80211_CHAN_PASSIVE));
2728 frm += sizeof (struct wpi_scan_chan);
2732 hdr->len = htole16(frm - (uint8_t *)hdr);
2733 pktlen = frm - (uint8_t *)cmd;
2735 error = bus_dmamap_load(ring->data_dmat, data->map, cmd, pktlen,
2736 wpi_dma_map_addr, &physaddr, BUS_DMA_NOWAIT);
2738 device_printf(sc->sc_dev, "could not map scan command\n");
2744 desc->flags = htole32(WPI_PAD32(pktlen) << 28 | 1 << 24);
2745 desc->segs[0].addr = htole32(physaddr);
2746 desc->segs[0].len = htole32(pktlen);
2748 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
2749 BUS_DMASYNC_PREWRITE);
2750 bus_dmamap_sync(ring->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
2753 ring->cur = (ring->cur + 1) % WPI_CMD_RING_COUNT;
2754 WPI_WRITE(sc, WPI_TX_WIDX, ring->qid << 8 | ring->cur);
2756 sc->sc_scan_timer = 5;
2757 return 0; /* will be notified async. of failure/success */
2761 * Configure the card to listen to a particular channel, this transisions the
2762 * card in to being able to receive frames from remote devices.
2765 wpi_config(struct wpi_softc *sc)
2767 struct ifnet *ifp = sc->sc_ifp;
2768 struct ieee80211com *ic = ifp->if_l2com;
2769 struct wpi_power power;
2770 struct wpi_bluetooth bluetooth;
2771 struct wpi_node_info node;
2774 /* set power mode */
2775 memset(&power, 0, sizeof power);
2776 power.flags = htole32(WPI_POWER_CAM|0x8);
2777 error = wpi_cmd(sc, WPI_CMD_SET_POWER_MODE, &power, sizeof power, 0);
2779 device_printf(sc->sc_dev, "could not set power mode\n");
2783 /* configure bluetooth coexistence */
2784 memset(&bluetooth, 0, sizeof bluetooth);
2785 bluetooth.flags = 3;
2786 bluetooth.lead = 0xaa;
2788 error = wpi_cmd(sc, WPI_CMD_BLUETOOTH, &bluetooth, sizeof bluetooth,
2791 device_printf(sc->sc_dev,
2792 "could not configure bluetooth coexistence\n");
2796 /* configure adapter */
2797 memset(&sc->config, 0, sizeof (struct wpi_config));
2798 IEEE80211_ADDR_COPY(sc->config.myaddr, IF_LLADDR(ifp));
2799 /*set default channel*/
2800 sc->config.chan = htole16(ieee80211_chan2ieee(ic, ic->ic_curchan));
2801 sc->config.flags = htole32(WPI_CONFIG_TSF);
2802 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
2803 sc->config.flags |= htole32(WPI_CONFIG_AUTO |
2806 sc->config.filter = 0;
2807 switch (ic->ic_opmode) {
2808 case IEEE80211_M_STA:
2809 case IEEE80211_M_WDS: /* No know setup, use STA for now */
2810 sc->config.mode = WPI_MODE_STA;
2811 sc->config.filter |= htole32(WPI_FILTER_MULTICAST);
2813 case IEEE80211_M_IBSS:
2814 case IEEE80211_M_AHDEMO:
2815 sc->config.mode = WPI_MODE_IBSS;
2816 sc->config.filter |= htole32(WPI_FILTER_BEACON |
2817 WPI_FILTER_MULTICAST);
2819 case IEEE80211_M_HOSTAP:
2820 sc->config.mode = WPI_MODE_HOSTAP;
2822 case IEEE80211_M_MONITOR:
2823 sc->config.mode = WPI_MODE_MONITOR;
2824 sc->config.filter |= htole32(WPI_FILTER_MULTICAST |
2825 WPI_FILTER_CTL | WPI_FILTER_PROMISC);
2828 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode);
2831 sc->config.cck_mask = 0x0f; /* not yet negotiated */
2832 sc->config.ofdm_mask = 0xff; /* not yet negotiated */
2833 error = wpi_cmd(sc, WPI_CMD_CONFIGURE, &sc->config,
2834 sizeof (struct wpi_config), 0);
2836 device_printf(sc->sc_dev, "configure command failed\n");
2840 /* configuration has changed, set Tx power accordingly */
2841 if ((error = wpi_set_txpower(sc, ic->ic_curchan, 0)) != 0) {
2842 device_printf(sc->sc_dev, "could not set Tx power\n");
2846 /* add broadcast node */
2847 memset(&node, 0, sizeof node);
2848 IEEE80211_ADDR_COPY(node.bssid, ifp->if_broadcastaddr);
2849 node.id = WPI_ID_BROADCAST;
2850 node.rate = wpi_plcp_signal(2);
2851 error = wpi_cmd(sc, WPI_CMD_ADD_NODE, &node, sizeof node, 0);
2853 device_printf(sc->sc_dev, "could not add broadcast node\n");
2857 /* Setup rate scalling */
2858 error = wpi_mrr_setup(sc);
2860 device_printf(sc->sc_dev, "could not setup MRR\n");
2868 wpi_stop_master(struct wpi_softc *sc)
2873 DPRINTFN(WPI_DEBUG_HW,("Disabling Firmware execution\n"));
2875 tmp = WPI_READ(sc, WPI_RESET);
2876 WPI_WRITE(sc, WPI_RESET, tmp | WPI_STOP_MASTER | WPI_NEVO_RESET);
2878 tmp = WPI_READ(sc, WPI_GPIO_CTL);
2879 if ((tmp & WPI_GPIO_PWR_STATUS) == WPI_GPIO_PWR_SLEEP)
2880 return; /* already asleep */
2882 for (ntries = 0; ntries < 100; ntries++) {
2883 if (WPI_READ(sc, WPI_RESET) & WPI_MASTER_DISABLED)
2887 if (ntries == 100) {
2888 device_printf(sc->sc_dev, "timeout waiting for master\n");
2893 wpi_power_up(struct wpi_softc *sc)
2899 tmp = wpi_mem_read(sc, WPI_MEM_POWER);
2900 wpi_mem_write(sc, WPI_MEM_POWER, tmp & ~0x03000000);
2903 for (ntries = 0; ntries < 5000; ntries++) {
2904 if (WPI_READ(sc, WPI_GPIO_STATUS) & WPI_POWERED)
2908 if (ntries == 5000) {
2909 device_printf(sc->sc_dev,
2910 "timeout waiting for NIC to power up\n");
2917 wpi_reset(struct wpi_softc *sc)
2922 DPRINTFN(WPI_DEBUG_HW,
2923 ("Resetting the card - clearing any uploaded firmware\n"));
2925 /* clear any pending interrupts */
2926 WPI_WRITE(sc, WPI_INTR, 0xffffffff);
2928 tmp = WPI_READ(sc, WPI_PLL_CTL);
2929 WPI_WRITE(sc, WPI_PLL_CTL, tmp | WPI_PLL_INIT);
2931 tmp = WPI_READ(sc, WPI_CHICKEN);
2932 WPI_WRITE(sc, WPI_CHICKEN, tmp | WPI_CHICKEN_RXNOLOS);
2934 tmp = WPI_READ(sc, WPI_GPIO_CTL);
2935 WPI_WRITE(sc, WPI_GPIO_CTL, tmp | WPI_GPIO_INIT);
2937 /* wait for clock stabilization */
2938 for (ntries = 0; ntries < 25000; ntries++) {
2939 if (WPI_READ(sc, WPI_GPIO_CTL) & WPI_GPIO_CLOCK)
2943 if (ntries == 25000) {
2944 device_printf(sc->sc_dev,
2945 "timeout waiting for clock stabilization\n");
2949 /* initialize EEPROM */
2950 tmp = WPI_READ(sc, WPI_EEPROM_STATUS);
2952 if ((tmp & WPI_EEPROM_VERSION) == 0) {
2953 device_printf(sc->sc_dev, "EEPROM not found\n");
2956 WPI_WRITE(sc, WPI_EEPROM_STATUS, tmp & ~WPI_EEPROM_LOCKED);
2962 wpi_hw_config(struct wpi_softc *sc)
2966 /* voodoo from the Linux "driver".. */
2967 hw = WPI_READ(sc, WPI_HWCONFIG);
2969 rev = pci_read_config(sc->sc_dev, PCIR_REVID, 1);
2970 if ((rev & 0xc0) == 0x40)
2971 hw |= WPI_HW_ALM_MB;
2972 else if (!(rev & 0x80))
2973 hw |= WPI_HW_ALM_MM;
2975 if (sc->cap == 0x80)
2976 hw |= WPI_HW_SKU_MRC;
2978 hw &= ~WPI_HW_REV_D;
2979 if ((le16toh(sc->rev) & 0xf0) == 0xd0)
2983 hw |= WPI_HW_TYPE_B;
2985 WPI_WRITE(sc, WPI_HWCONFIG, hw);
2989 wpi_rfkill_resume(struct wpi_softc *sc)
2991 struct ifnet *ifp = sc->sc_ifp;
2992 struct ieee80211com *ic = ifp->if_l2com;
2993 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2996 /* enable firmware again */
2997 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF);
2998 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD);
3000 /* wait for thermal sensors to calibrate */
3001 for (ntries = 0; ntries < 1000; ntries++) {
3002 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0)
3007 if (ntries == 1000) {
3008 device_printf(sc->sc_dev,
3009 "timeout waiting for thermal calibration\n");
3012 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp));
3014 if (wpi_config(sc) != 0) {
3015 device_printf(sc->sc_dev, "device config failed\n");
3019 ifq_clr_oactive(&ifp->if_snd);
3020 ifp->if_flags |= IFF_RUNNING;
3021 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF;
3024 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) {
3025 if (vap->iv_opmode != IEEE80211_M_MONITOR) {
3026 ieee80211_beacon_miss(ic);
3027 wpi_set_led(sc, WPI_LED_LINK, 0, 1);
3029 wpi_set_led(sc, WPI_LED_LINK, 5, 5);
3031 ieee80211_scan_next(vap);
3032 wpi_set_led(sc, WPI_LED_LINK, 20, 2);
3036 callout_reset(&sc->watchdog_to_callout, hz, wpi_watchdog_callout, sc);
3040 wpi_init_locked(struct wpi_softc *sc, int force)
3042 struct ifnet *ifp = sc->sc_ifp;
3046 wpi_stop_locked(sc);
3047 (void)wpi_reset(sc);
3050 wpi_mem_write(sc, WPI_MEM_CLOCK1, 0xa00);
3052 tmp = wpi_mem_read(sc, WPI_MEM_PCIDEV);
3053 wpi_mem_write(sc, WPI_MEM_PCIDEV, tmp | 0x800);
3056 (void)wpi_power_up(sc);
3061 WPI_WRITE(sc, WPI_RX_BASE, sc->rxq.desc_dma.paddr);
3062 WPI_WRITE(sc, WPI_RX_RIDX_PTR, sc->shared_dma.paddr +
3063 offsetof(struct wpi_shared, next));
3064 WPI_WRITE(sc, WPI_RX_WIDX, (WPI_RX_RING_COUNT - 1) & ~7);
3065 WPI_WRITE(sc, WPI_RX_CONFIG, 0xa9601010);
3070 wpi_mem_write(sc, WPI_MEM_MODE, 2); /* bypass mode */
3071 wpi_mem_write(sc, WPI_MEM_RA, 1); /* enable RA0 */
3072 wpi_mem_write(sc, WPI_MEM_TXCFG, 0x3f); /* enable all 6 Tx rings */
3073 wpi_mem_write(sc, WPI_MEM_BYPASS1, 0x10000);
3074 wpi_mem_write(sc, WPI_MEM_BYPASS2, 0x30002);
3075 wpi_mem_write(sc, WPI_MEM_MAGIC4, 4);
3076 wpi_mem_write(sc, WPI_MEM_MAGIC5, 5);
3078 WPI_WRITE(sc, WPI_TX_BASE_PTR, sc->shared_dma.paddr);
3079 WPI_WRITE(sc, WPI_MSG_CONFIG, 0xffff05a5);
3081 for (qid = 0; qid < 6; qid++) {
3082 WPI_WRITE(sc, WPI_TX_CTL(qid), 0);
3083 WPI_WRITE(sc, WPI_TX_BASE(qid), 0);
3084 WPI_WRITE(sc, WPI_TX_CONFIG(qid), 0x80200008);
3088 /* clear "radio off" and "disable command" bits (reversed logic) */
3089 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF);
3090 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_DISABLE_CMD);
3091 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF;
3093 /* clear any pending interrupts */
3094 WPI_WRITE(sc, WPI_INTR, 0xffffffff);
3096 /* enable interrupts */
3097 WPI_WRITE(sc, WPI_MASK, WPI_INTR_MASK);
3099 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF);
3100 WPI_WRITE(sc, WPI_UCODE_CLR, WPI_RADIO_OFF);
3102 if ((wpi_load_firmware(sc)) != 0) {
3103 device_printf(sc->sc_dev,
3104 "A problem occurred loading the firmware to the driver\n");
3108 /* At this point the firmware is up and running. If the hardware
3109 * RF switch is turned off thermal calibration will fail, though
3110 * the card is still happy to continue to accept commands, catch
3111 * this case and schedule a task to watch for it to be turned on.
3114 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF);
3118 sc->flags |= WPI_FLAG_HW_RADIO_OFF;
3119 device_printf(sc->sc_dev,"Radio Transmitter is switched off\n");
3123 /* wait for thermal sensors to calibrate */
3124 for (ntries = 0; ntries < 1000; ntries++) {
3125 if ((sc->temp = (int)WPI_READ(sc, WPI_TEMPERATURE)) != 0)
3130 if (ntries == 1000) {
3131 device_printf(sc->sc_dev,
3132 "timeout waiting for thermal sensors calibration\n");
3135 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d\n", sc->temp));
3137 if (wpi_config(sc) != 0) {
3138 device_printf(sc->sc_dev, "device config failed\n");
3142 ifq_clr_oactive(&ifp->if_snd);
3143 ifp->if_flags |= IFF_RUNNING;
3145 callout_reset(&sc->watchdog_to_callout, hz, wpi_watchdog_callout, sc);
3151 struct wpi_softc *sc = arg;
3152 struct ifnet *ifp = sc->sc_ifp;
3153 struct ieee80211com *ic = ifp->if_l2com;
3155 wpi_init_locked(sc, 0);
3157 if (ifp->if_flags & IFF_RUNNING)
3158 ieee80211_start_all(ic); /* start all vaps */
3162 wpi_stop_locked(struct wpi_softc *sc)
3164 struct ifnet *ifp = sc->sc_ifp;
3168 sc->sc_tx_timer = 0;
3169 sc->sc_scan_timer = 0;
3170 ifp->if_flags &= ~IFF_RUNNING;
3171 ifq_clr_oactive(&ifp->if_snd);
3172 sc->flags &= ~WPI_FLAG_HW_RADIO_OFF;
3173 callout_stop(&sc->watchdog_to_callout);
3174 callout_stop(&sc->calib_to_callout);
3177 /* disable interrupts */
3178 WPI_WRITE(sc, WPI_MASK, 0);
3179 WPI_WRITE(sc, WPI_INTR, WPI_INTR_MASK);
3180 WPI_WRITE(sc, WPI_INTR_STATUS, 0xff);
3181 WPI_WRITE(sc, WPI_INTR_STATUS, 0x00070000);
3184 wpi_mem_write(sc, WPI_MEM_MODE, 0);
3187 /* reset all Tx rings */
3188 for (ac = 0; ac < 4; ac++)
3189 wpi_reset_tx_ring(sc, &sc->txq[ac]);
3190 wpi_reset_tx_ring(sc, &sc->cmdq);
3193 wpi_reset_rx_ring(sc, &sc->rxq);
3196 wpi_mem_write(sc, WPI_MEM_CLOCK2, 0x200);
3201 wpi_stop_master(sc);
3203 tmp = WPI_READ(sc, WPI_RESET);
3204 WPI_WRITE(sc, WPI_RESET, tmp | WPI_SW_RESET);
3205 sc->flags &= ~WPI_FLAG_BUSY;
3209 wpi_stop(struct wpi_softc *sc)
3211 wpi_stop_locked(sc);
3215 wpi_newassoc(struct ieee80211_node *ni, int isnew)
3218 ieee80211_ratectl_node_init(ni);
3222 wpi_calib_timeout_callout(void *arg)
3224 struct wpi_softc *sc = arg;
3225 struct ifnet *ifp = sc->sc_ifp;
3226 struct ieee80211com *ic = ifp->if_l2com;
3227 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
3230 if (vap->iv_state != IEEE80211_S_RUN)
3233 /* update sensor data */
3234 temp = (int)WPI_READ(sc, WPI_TEMPERATURE);
3235 DPRINTFN(WPI_DEBUG_TEMP,("Temp in calibration is: %d\n", temp));
3237 wpi_power_calibration(sc, temp);
3239 callout_reset(&sc->calib_to_callout, 60*hz, wpi_calib_timeout_callout, sc);
3243 * This function is called periodically (every 60 seconds) to adjust output
3244 * power to temperature changes.
3247 wpi_power_calibration(struct wpi_softc *sc, int temp)
3249 struct ifnet *ifp = sc->sc_ifp;
3250 struct ieee80211com *ic = ifp->if_l2com;
3251 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
3253 /* sanity-check read value */
3254 if (temp < -260 || temp > 25) {
3255 /* this can't be correct, ignore */
3256 DPRINTFN(WPI_DEBUG_TEMP,
3257 ("out-of-range temperature reported: %d\n", temp));
3261 DPRINTFN(WPI_DEBUG_TEMP,("temperature %d->%d\n", sc->temp, temp));
3263 /* adjust Tx power if need be */
3264 if (abs(temp - sc->temp) <= 6)
3269 if (wpi_set_txpower(sc, vap->iv_bss->ni_chan, 1) != 0) {
3270 /* just warn, too bad for the automatic calibration... */
3271 device_printf(sc->sc_dev,"could not adjust Tx power\n");
3276 * Read the eeprom to find out what channels are valid for the given
3277 * band and update net80211 with what we find.
3280 wpi_read_eeprom_channels(struct wpi_softc *sc, int n)
3282 struct ifnet *ifp = sc->sc_ifp;
3283 struct ieee80211com *ic = ifp->if_l2com;
3284 const struct wpi_chan_band *band = &wpi_bands[n];
3285 struct wpi_eeprom_chan channels[WPI_MAX_CHAN_PER_BAND];
3286 struct ieee80211_channel *c;
3287 int chan, i, passive;
3289 wpi_read_prom_data(sc, band->addr, channels,
3290 band->nchan * sizeof (struct wpi_eeprom_chan));
3292 for (i = 0; i < band->nchan; i++) {
3293 if (!(channels[i].flags & WPI_EEPROM_CHAN_VALID)) {
3294 DPRINTFN(WPI_DEBUG_HW,
3295 ("Channel Not Valid: %d, band %d\n",
3301 chan = band->chan[i];
3302 c = &ic->ic_channels[ic->ic_nchans++];
3304 /* is active scan allowed on this channel? */
3305 if (!(channels[i].flags & WPI_EEPROM_CHAN_ACTIVE)) {
3306 passive = IEEE80211_CHAN_PASSIVE;
3309 if (n == 0) { /* 2GHz band */
3311 c->ic_freq = ieee80211_ieee2mhz(chan,
3312 IEEE80211_CHAN_2GHZ);
3313 c->ic_flags = IEEE80211_CHAN_B | passive;
3315 c = &ic->ic_channels[ic->ic_nchans++];
3317 c->ic_freq = ieee80211_ieee2mhz(chan,
3318 IEEE80211_CHAN_2GHZ);
3319 c->ic_flags = IEEE80211_CHAN_G | passive;
3321 } else { /* 5GHz band */
3323 * Some 3945ABG adapters support channels 7, 8, 11
3324 * and 12 in the 2GHz *and* 5GHz bands.
3325 * Because of limitations in our net80211(9) stack,
3326 * we can't support these channels in 5GHz band.
3327 * XXX not true; just need to map to proper frequency
3333 c->ic_freq = ieee80211_ieee2mhz(chan,
3334 IEEE80211_CHAN_5GHZ);
3335 c->ic_flags = IEEE80211_CHAN_A | passive;
3338 /* save maximum allowed power for this channel */
3339 sc->maxpwr[chan] = channels[i].maxpwr;
3342 // XXX We can probably use this an get rid of maxpwr - ben 20070617
3343 ic->ic_channels[chan].ic_maxpower = channels[i].maxpwr;
3344 //ic->ic_channels[chan].ic_minpower...
3345 //ic->ic_channels[chan].ic_maxregtxpower...
3348 DPRINTF(("adding chan %d (%dMHz) flags=0x%x maxpwr=%d"
3349 " passive=%d, offset %d\n", chan, c->ic_freq,
3350 channels[i].flags, sc->maxpwr[chan],
3351 (c->ic_flags & IEEE80211_CHAN_PASSIVE) != 0,
3357 wpi_read_eeprom_group(struct wpi_softc *sc, int n)
3359 struct wpi_power_group *group = &sc->groups[n];
3360 struct wpi_eeprom_group rgroup;
3363 wpi_read_prom_data(sc, WPI_EEPROM_POWER_GRP + n * 32, &rgroup,
3366 /* save power group information */
3367 group->chan = rgroup.chan;
3368 group->maxpwr = rgroup.maxpwr;
3369 /* temperature at which the samples were taken */
3370 group->temp = (int16_t)le16toh(rgroup.temp);
3372 DPRINTF(("power group %d: chan=%d maxpwr=%d temp=%d\n", n,
3373 group->chan, group->maxpwr, group->temp));
3375 for (i = 0; i < WPI_SAMPLES_COUNT; i++) {
3376 group->samples[i].index = rgroup.samples[i].index;
3377 group->samples[i].power = rgroup.samples[i].power;
3379 DPRINTF(("\tsample %d: index=%d power=%d\n", i,
3380 group->samples[i].index, group->samples[i].power));
3385 * Update Tx power to match what is defined for channel `c'.
3388 wpi_set_txpower(struct wpi_softc *sc, struct ieee80211_channel *c, int async)
3390 struct ifnet *ifp = sc->sc_ifp;
3391 struct ieee80211com *ic = ifp->if_l2com;
3392 struct wpi_power_group *group;
3393 struct wpi_cmd_txpower txpower;
3397 /* get channel number */
3398 chan = ieee80211_chan2ieee(ic, c);
3400 /* find the power group to which this channel belongs */
3401 if (IEEE80211_IS_CHAN_5GHZ(c)) {
3402 for (group = &sc->groups[1]; group < &sc->groups[4]; group++)
3403 if (chan <= group->chan)
3406 group = &sc->groups[0];
3408 memset(&txpower, 0, sizeof txpower);
3409 txpower.band = IEEE80211_IS_CHAN_5GHZ(c) ? 0 : 1;
3410 txpower.channel = htole16(chan);
3412 /* set Tx power for all OFDM and CCK rates */
3413 for (i = 0; i <= 11 ; i++) {
3414 /* retrieve Tx power for this channel/rate combination */
3415 int idx = wpi_get_power_index(sc, group, c,
3416 wpi_ridx_to_rate[i]);
3418 txpower.rates[i].rate = wpi_ridx_to_plcp[i];
3420 if (IEEE80211_IS_CHAN_5GHZ(c)) {
3421 txpower.rates[i].gain_radio = wpi_rf_gain_5ghz[idx];
3422 txpower.rates[i].gain_dsp = wpi_dsp_gain_5ghz[idx];
3424 txpower.rates[i].gain_radio = wpi_rf_gain_2ghz[idx];
3425 txpower.rates[i].gain_dsp = wpi_dsp_gain_2ghz[idx];
3427 DPRINTFN(WPI_DEBUG_TEMP,("chan %d/rate %d: power index %d\n",
3428 chan, wpi_ridx_to_rate[i], idx));
3431 return wpi_cmd(sc, WPI_CMD_TXPOWER, &txpower, sizeof txpower, async);
3435 * Determine Tx power index for a given channel/rate combination.
3436 * This takes into account the regulatory information from EEPROM and the
3437 * current temperature.
3440 wpi_get_power_index(struct wpi_softc *sc, struct wpi_power_group *group,
3441 struct ieee80211_channel *c, int rate)
3443 /* fixed-point arithmetic division using a n-bit fractional part */
3444 #define fdivround(a, b, n) \
3445 ((((1 << n) * (a)) / (b) + (1 << n) / 2) / (1 << n))
3447 /* linear interpolation */
3448 #define interpolate(x, x1, y1, x2, y2, n) \
3449 ((y1) + fdivround(((x) - (x1)) * ((y2) - (y1)), (x2) - (x1), n))
3451 struct ifnet *ifp = sc->sc_ifp;
3452 struct ieee80211com *ic = ifp->if_l2com;
3453 struct wpi_power_sample *sample;
3457 /* get channel number */
3458 chan = ieee80211_chan2ieee(ic, c);
3460 /* default power is group's maximum power - 3dB */
3461 pwr = group->maxpwr / 2;
3463 /* decrease power for highest OFDM rates to reduce distortion */
3465 case 72: /* 36Mb/s */
3466 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 0 : 5;
3468 case 96: /* 48Mb/s */
3469 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 7 : 10;
3471 case 108: /* 54Mb/s */
3472 pwr -= IEEE80211_IS_CHAN_2GHZ(c) ? 9 : 12;
3476 /* never exceed channel's maximum allowed Tx power */
3477 pwr = min(pwr, sc->maxpwr[chan]);
3479 /* retrieve power index into gain tables from samples */
3480 for (sample = group->samples; sample < &group->samples[3]; sample++)
3481 if (pwr > sample[1].power)
3483 /* fixed-point linear interpolation using a 19-bit fractional part */
3484 idx = interpolate(pwr, sample[0].power, sample[0].index,
3485 sample[1].power, sample[1].index, 19);
3488 * Adjust power index based on current temperature
3489 * - if colder than factory-calibrated: decreate output power
3490 * - if warmer than factory-calibrated: increase output power
3492 idx -= (sc->temp - group->temp) * 11 / 100;
3494 /* decrease power for CCK rates (-5dB) */
3495 if (!WPI_RATE_IS_OFDM(rate))
3498 /* keep power index in a valid range */
3501 if (idx > WPI_MAX_PWR_INDEX)
3502 return WPI_MAX_PWR_INDEX;
3510 * Called by net80211 framework to indicate that a scan
3511 * is starting. This function doesn't actually do the scan,
3512 * wpi_scan_curchan starts things off. This function is more
3513 * of an early warning from the framework we should get ready
3517 wpi_scan_start(struct ieee80211com *ic)
3519 struct ifnet *ifp = ic->ic_ifp;
3520 struct wpi_softc *sc = ifp->if_softc;
3522 wpi_set_led(sc, WPI_LED_LINK, 20, 2);
3526 * Called by the net80211 framework, indicates that the
3527 * scan has ended. If there is a scan in progress on the card
3528 * then it should be aborted.
3531 wpi_scan_end(struct ieee80211com *ic)
3537 * Called by the net80211 framework to indicate to the driver
3538 * that the channel should be changed
3541 wpi_set_channel(struct ieee80211com *ic)
3543 struct ifnet *ifp = ic->ic_ifp;
3544 struct wpi_softc *sc = ifp->if_softc;
3548 * Only need to set the channel in Monitor mode. AP scanning and auth
3549 * are already taken care of by their respective firmware commands.
3551 if (ic->ic_opmode == IEEE80211_M_MONITOR) {
3552 error = wpi_config(sc);
3554 device_printf(sc->sc_dev,
3555 "error %d settting channel\n", error);
3560 * Called by net80211 to indicate that we need to scan the current
3561 * channel. The channel is previously be set via the wpi_set_channel
3565 wpi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
3567 struct ieee80211vap *vap = ss->ss_vap;
3568 struct ifnet *ifp = vap->iv_ic->ic_ifp;
3569 struct wpi_softc *sc = ifp->if_softc;
3572 ieee80211_cancel_scan(vap);
3576 * Called by the net80211 framework to indicate
3577 * the minimum dwell time has been met, terminate the scan.
3578 * We don't actually terminate the scan as the firmware will notify
3579 * us when it's finished and we have no way to interrupt it.
3582 wpi_scan_mindwell(struct ieee80211_scan_state *ss)
3584 /* NB: don't try to abort scan; wait for firmware to finish */
3588 wpi_hwreset_task(void *arg, int pending)
3590 struct wpi_softc *sc;
3592 wlan_serialize_enter();
3594 wpi_init_locked(sc, 0);
3595 wlan_serialize_exit();
3599 wpi_rfreset_task(void *arg, int pending)
3601 struct wpi_softc *sc;
3603 wlan_serialize_enter();
3605 wpi_rfkill_resume(sc);
3606 wlan_serialize_exit();
3610 * Allocate DMA-safe memory for firmware transfer.
3613 wpi_alloc_fwmem(struct wpi_softc *sc)
3615 /* allocate enough contiguous space to store text and data */
3616 return wpi_dma_contig_alloc(sc, &sc->fw_dma, NULL,
3617 WPI_FW_MAIN_TEXT_MAXSZ + WPI_FW_MAIN_DATA_MAXSZ, 1,
3622 wpi_free_fwmem(struct wpi_softc *sc)
3624 wpi_dma_contig_free(&sc->fw_dma);
3628 * Called every second, wpi_watchdog_callout used by the watch dog timer
3629 * to check that the card is still alive
3632 wpi_watchdog_callout(void *arg)
3634 struct wpi_softc *sc;
3636 struct ieee80211com *ic;
3639 wlan_serialize_enter();
3643 DPRINTFN(WPI_DEBUG_WATCHDOG,("Watchdog: tick\n"));
3645 if (sc->flags & WPI_FLAG_HW_RADIO_OFF) {
3646 /* No need to lock firmware memory */
3647 tmp = wpi_mem_read(sc, WPI_MEM_HW_RADIO_OFF);
3649 if ((tmp & 0x1) == 0) {
3650 /* Radio kill switch is still off */
3651 callout_reset(&sc->watchdog_to_callout, hz, wpi_watchdog_callout, sc);
3652 wlan_serialize_exit();
3656 device_printf(sc->sc_dev, "Hardware Switch Enabled\n");
3657 ieee80211_runtask(ic, &sc->sc_radiotask);
3658 wlan_serialize_exit();
3662 if (sc->sc_tx_timer > 0) {
3663 if (--sc->sc_tx_timer == 0) {
3664 device_printf(sc->sc_dev,"device timeout\n");
3665 IFNET_STAT_INC(ifp, oerrors, 1);
3666 wlan_serialize_exit();
3667 ieee80211_runtask(ic, &sc->sc_restarttask);
3668 wlan_serialize_enter();
3671 if (sc->sc_scan_timer > 0) {
3672 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
3673 if (--sc->sc_scan_timer == 0 && vap != NULL) {
3674 device_printf(sc->sc_dev,"scan timeout\n");
3675 ieee80211_cancel_scan(vap);
3676 wlan_serialize_exit();
3677 ieee80211_runtask(ic, &sc->sc_restarttask);
3678 wlan_serialize_enter();
3682 if (ifp->if_flags & IFF_RUNNING)
3683 callout_reset(&sc->watchdog_to_callout, hz, wpi_watchdog_callout, sc);
3685 wlan_serialize_exit();
3689 static const char *wpi_cmd_str(int cmd)
3692 case WPI_DISABLE_CMD: return "WPI_DISABLE_CMD";
3693 case WPI_CMD_CONFIGURE: return "WPI_CMD_CONFIGURE";
3694 case WPI_CMD_ASSOCIATE: return "WPI_CMD_ASSOCIATE";
3695 case WPI_CMD_SET_WME: return "WPI_CMD_SET_WME";
3696 case WPI_CMD_TSF: return "WPI_CMD_TSF";
3697 case WPI_CMD_ADD_NODE: return "WPI_CMD_ADD_NODE";
3698 case WPI_CMD_TX_DATA: return "WPI_CMD_TX_DATA";
3699 case WPI_CMD_MRR_SETUP: return "WPI_CMD_MRR_SETUP";
3700 case WPI_CMD_SET_LED: return "WPI_CMD_SET_LED";
3701 case WPI_CMD_SET_POWER_MODE: return "WPI_CMD_SET_POWER_MODE";
3702 case WPI_CMD_SCAN: return "WPI_CMD_SCAN";
3703 case WPI_CMD_SET_BEACON:return "WPI_CMD_SET_BEACON";
3704 case WPI_CMD_TXPOWER: return "WPI_CMD_TXPOWER";
3705 case WPI_CMD_BLUETOOTH: return "WPI_CMD_BLUETOOTH";
3708 KASSERT(1, ("Unknown Command: %d", cmd));
3709 return "UNKNOWN CMD"; /* Make the compiler happy */
3714 MODULE_DEPEND(wpi, pci, 1, 1, 1);
3715 MODULE_DEPEND(wpi, wlan, 1, 1, 1);
3716 MODULE_DEPEND(wpi, firmware, 1, 1, 1);
3717 MODULE_DEPEND(wpi, wlan_amrr, 1, 1, 1);