1 /* $OpenBSD: if_urtwn.c,v 1.16 2011/02/10 17:26:40 jakemsr Exp $ */
4 * Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr>
5 * Copyright (c) 2014 Kevin Lo <kevlo@FreeBSD.org>
6 * Copyright (c) 2015-2016 Andriy Voskoboinyk <avos@FreeBSD.org>
8 * Permission to use, copy, modify, and distribute this software for any
9 * purpose with or without fee is hereby granted, provided that the above
10 * copyright notice and this permission notice appear in all copies.
12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 #include <sys/cdefs.h>
22 __FBSDID("$FreeBSD$");
26 #include <sys/param.h>
28 #include <sys/mutex.h>
30 #include <sys/kernel.h>
31 #include <sys/socket.h>
32 #include <sys/systm.h>
33 #include <sys/malloc.h>
34 #include <sys/queue.h>
35 #include <sys/taskqueue.h>
37 #include <sys/endian.h>
38 #include <sys/linker.h>
41 #include <net/ethernet.h>
42 #include <net/if_media.h>
44 #include <net80211/ieee80211_var.h>
45 #include <net80211/ieee80211_radiotap.h>
46 #include <net80211/ieee80211_ratectl.h>
48 #include <dev/rtwn/if_rtwnreg.h>
49 #include <dev/rtwn/if_rtwnvar.h>
51 #include <dev/rtwn/if_rtwn_debug.h>
52 #include <dev/rtwn/if_rtwn_ridx.h>
53 #include <dev/rtwn/if_rtwn_rx.h>
54 #include <dev/rtwn/if_rtwn_task.h>
55 #include <dev/rtwn/if_rtwn_tx.h>
57 #include <dev/rtwn/rtl8192c/r92c.h>
58 #include <dev/rtwn/rtl8192c/r92c_reg.h>
59 #include <dev/rtwn/rtl8192c/r92c_var.h>
60 #include <dev/rtwn/rtl8192c/r92c_fw_cmd.h>
61 #include <dev/rtwn/rtl8192c/r92c_tx_desc.h>
63 #ifndef RTWN_WITHOUT_UCODE
65 r92c_fw_cmd(struct rtwn_softc *sc, uint8_t id, const void *buf, int len)
67 struct r92c_fw_cmd cmd;
70 KASSERT(len <= sizeof(cmd.msg),
71 ("%s: firmware command too long (%d > %zu)\n",
72 __func__, len, sizeof(cmd.msg)));
74 if (!(sc->sc_flags & RTWN_FW_LOADED)) {
75 RTWN_DPRINTF(sc, RTWN_DEBUG_FIRMWARE, "%s: firmware "
76 "was not loaded; command (id %u) will be discarded\n",
81 /* Wait for current FW box to be empty. */
82 for (ntries = 0; ntries < 100; ntries++) {
83 if (!(rtwn_read_1(sc, R92C_HMETFR) & (1 << sc->fwcur)))
88 device_printf(sc->sc_dev,
89 "could not send firmware command\n");
92 memset(&cmd, 0, sizeof(cmd));
95 /* Ext command: [id : byte2 : byte3 : byte4 : byte0 : byte1] */
96 cmd.id |= R92C_CMD_FLAG_EXT;
97 memcpy(cmd.msg, (const uint8_t *)buf + 2, len - 2);
98 memcpy(cmd.msg + 3, buf, 2);
100 memcpy(cmd.msg, buf, len);
102 /* Write the first word last since that will trigger the FW. */
104 error = rtwn_write_2(sc, R92C_HMEBOX_EXT(sc->fwcur),
105 *(uint16_t *)((uint8_t *)&cmd + 4));
109 error = rtwn_write_4(sc, R92C_HMEBOX(sc->fwcur),
114 sc->fwcur = (sc->fwcur + 1) % R92C_H2C_NBOX;
120 r92c_fw_reset(struct rtwn_softc *sc, int reason)
124 if (reason == RTWN_FW_RESET_CHECKSUM)
127 /* Tell 8051 to reset itself. */
128 rtwn_write_1(sc, R92C_HMETFR + 3, 0x20);
130 /* Wait until 8051 resets by itself. */
131 for (ntries = 0; ntries < 100; ntries++) {
132 if ((rtwn_read_2(sc, R92C_SYS_FUNC_EN) &
133 R92C_SYS_FUNC_EN_CPUEN) == 0)
137 /* Force 8051 reset. */
138 rtwn_setbits_1_shift(sc, R92C_SYS_FUNC_EN,
139 R92C_SYS_FUNC_EN_CPUEN, 0, 1);
143 r92c_fw_download_enable(struct rtwn_softc *sc, int enable)
147 rtwn_setbits_1_shift(sc, R92C_SYS_FUNC_EN, 0,
148 R92C_SYS_FUNC_EN_CPUEN, 1);
149 /* MCU firmware download enable. */
150 rtwn_setbits_1(sc, R92C_MCUFWDL, 0, R92C_MCUFWDL_EN);
152 rtwn_setbits_1_shift(sc, R92C_MCUFWDL, R92C_MCUFWDL_ROM_DLEN,
155 /* MCU download disable. */
156 rtwn_setbits_1(sc, R92C_MCUFWDL, R92C_MCUFWDL_EN, 0);
157 /* Reserved for f/w extension. */
158 rtwn_write_1(sc, R92C_MCUFWDL + 1, 0);
164 * Initialize firmware rate adaptation.
166 #ifndef RTWN_WITHOUT_UCODE
168 r92c_send_ra_cmd(struct rtwn_softc *sc, int macid, uint32_t rates,
171 struct r92c_fw_cmd_macid_cfg cmd;
175 /* XXX should be called directly from iv_newstate() for MACID_BC */
176 /* XXX joinbss, not send_ra_cmd() */
178 /* NB: group addressed frames are done at 11bg rates for now */
179 if (ic->ic_curmode == IEEE80211_MODE_11B)
180 mode = R92C_RAID_11B;
182 mode = R92C_RAID_11BG;
183 /* XXX misleading 'mode' value here for unicast frames */
184 RTWN_DPRINTF(sc, RTWN_DEBUG_RA,
185 "%s: mode 0x%x, rates 0x%08x, basicrates 0x%08x\n", __func__,
186 mode, rates, basicrates);
188 /* Set rates mask for group addressed frames. */
189 cmd.macid = RTWN_MACID_BC | R92C_CMD_MACID_VALID;
190 cmd.mask = htole32(mode << 28 | basicrates);
191 error = rtwn_fw_cmd(sc, R92C_CMD_MACID_CONFIG, &cmd, sizeof(cmd));
193 device_printf(sc->sc_dev,
194 "could not set RA mask for broadcast station\n");
199 /* Set rates mask for unicast frames. */
200 if (maxrate >= RTWN_RIDX_HT_MCS(0))
201 mode = R92C_RAID_11GN;
202 else if (maxrate >= RTWN_RIDX_OFDM6)
203 mode = R92C_RAID_11BG;
205 mode = R92C_RAID_11B;
206 cmd.macid = macid | R92C_CMD_MACID_VALID;
207 cmd.mask = htole32(mode << 28 | rates);
208 error = r92c_fw_cmd(sc, R92C_CMD_MACID_CONFIG, &cmd, sizeof(cmd));
210 device_printf(sc->sc_dev,
211 "%s: could not set RA mask for %d station\n",
221 r92c_init_ra(struct rtwn_softc *sc, int macid)
223 struct ieee80211_htrateset *rs_ht;
224 struct ieee80211_node *ni;
229 if (sc->node_list[macid] == NULL) {
230 RTWN_DPRINTF(sc, RTWN_DEBUG_RA, "%s: macid %d, ni is NULL\n",
236 ni = ieee80211_ref_node(sc->node_list[macid]);
237 if (ni->ni_flags & IEEE80211_NODE_HT)
238 rs_ht = &ni->ni_htrates;
242 rtwn_get_rates(sc, &ni->ni_rates, rs_ht, &rates, &maxrate, 0);
245 #ifndef RTWN_WITHOUT_UCODE
246 if (sc->sc_ratectl == RTWN_RATECTL_FW) {
247 r92c_send_ra_cmd(sc, macid, rates, maxrate);
251 rtwn_write_1(sc, R92C_INIDATA_RATE_SEL(macid), maxrate);
253 ieee80211_free_node(ni);
257 r92c_joinbss_rpt(struct rtwn_softc *sc, int macid)
259 #ifndef RTWN_WITHOUT_UCODE
260 struct r92c_softc *rs = sc->sc_priv;
261 struct ieee80211vap *vap;
262 struct r92c_fw_cmd_joinbss_rpt cmd;
264 if (sc->vaps[0] == NULL) /* XXX fix */
267 vap = &sc->vaps[0]->vap;
268 if ((vap->iv_state == IEEE80211_S_RUN) ^
269 !(rs->rs_flags & R92C_FLAG_ASSOCIATED))
272 if (rs->rs_flags & R92C_FLAG_ASSOCIATED) {
273 cmd.mstatus = R92C_MSTATUS_DISASSOC;
274 rs->rs_flags &= ~R92C_FLAG_ASSOCIATED;
276 cmd.mstatus = R92C_MSTATUS_ASSOC;
277 rs->rs_flags |= R92C_FLAG_ASSOCIATED;
280 if (r92c_fw_cmd(sc, R92C_CMD_JOINBSS_RPT, &cmd, sizeof(cmd)) != 0) {
281 device_printf(sc->sc_dev, "%s: cannot change media status!\n",
288 /* TODO: init rates for RTWN_MACID_BC. */
289 if (macid & RTWN_MACID_VALID)
290 r92c_init_ra(sc, macid & ~RTWN_MACID_VALID);
293 #ifndef RTWN_WITHOUT_UCODE
295 r92c_set_rsvd_page(struct rtwn_softc *sc, int probe_resp, int null,
298 struct r92c_fw_cmd_rsvdpage rsvd;
300 rsvd.probe_resp = probe_resp;
302 rsvd.null_data = null;
304 return (r92c_fw_cmd(sc, R92C_CMD_RSVD_PAGE, &rsvd, sizeof(rsvd)));
308 r92c_set_pwrmode(struct rtwn_softc *sc, struct ieee80211vap *vap,
311 struct r92c_fw_cmd_pwrmode mode;
314 /* XXX dm_RF_saving */
316 if (off && vap->iv_state == IEEE80211_S_RUN &&
317 (vap->iv_flags & IEEE80211_F_PMGTON))
318 mode.mode = R92C_PWRMODE_MIN;
320 mode.mode = R92C_PWRMODE_CAM;
321 mode.smart_ps = R92C_PWRMODE_SMARTPS_NULLDATA;
322 mode.bcn_pass = 1; /* XXX */
323 error = r92c_fw_cmd(sc, R92C_CMD_SET_PWRMODE, &mode, sizeof(mode));
325 device_printf(sc->sc_dev,
326 "%s: CMD_SET_PWRMODE was not sent, error %d\n",
334 r92c_set_rssi(struct rtwn_softc *sc)
336 struct ieee80211_node *ni;
337 struct rtwn_node *rn;
338 struct r92c_fw_cmd_rssi cmd;
344 for (i = 0; i < sc->macid_limit; i++) {
346 ni = sc->node_list[i];
352 cmd.pwdb = rn->avg_pwdb;
353 RTWN_DPRINTF(sc, RTWN_DEBUG_RSSI,
354 "%s: sending RSSI command (macid %d, rssi %d)\n",
355 __func__, i, rn->avg_pwdb);
358 r92c_fw_cmd(sc, R92C_CMD_RSSI_SETTING, &cmd, sizeof(cmd));
365 r92c_ratectl_tx_complete(struct rtwn_softc *sc, uint8_t *buf, int len)
367 #if __FreeBSD_version >= 1200012
368 struct ieee80211_ratectl_tx_status txs;
370 struct r92c_c2h_tx_rpt *rpt;
371 struct ieee80211_node *ni;
375 if (sc->sc_ratectl != RTWN_RATECTL_NET80211) {
376 /* shouldn't happen */
377 device_printf(sc->sc_dev, "%s called while ratectl = %d!\n",
378 __func__, sc->sc_ratectl);
382 rpt = (struct r92c_c2h_tx_rpt *)buf;
383 if (len != sizeof(*rpt)) {
384 device_printf(sc->sc_dev,
385 "%s: wrong report size (%d, must be %zu)\n",
386 __func__, len, sizeof(*rpt));
390 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR,
391 "%s: ccx report dump: 0: %02X, 1: %02X, queue time: "
392 "low %02X, high %02X, 4: %02X, 5: %02X, 6: %02X, 7: %02X\n",
393 __func__, rpt->rptb0, rpt->rptb1, rpt->queue_time_low,
394 rpt->queue_time_high, rpt->rptb4, rpt->rptb5, rpt->rptb6,
397 macid = MS(rpt->rptb5, R92C_RPTB5_MACID);
398 if (macid > sc->macid_limit) {
399 device_printf(sc->sc_dev,
400 "macid %u is too big; increase MACID_MAX limit\n",
405 ntries = MS(rpt->rptb0, R92C_RPTB0_RETRY_CNT);
408 ni = sc->node_list[macid];
410 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, "%s: frame for macid %u was"
411 "%s sent (%d retries)\n", __func__, macid,
412 (rpt->rptb7 & R92C_RPTB7_PKT_OK) ? "" : " not",
415 #if __FreeBSD_version >= 1200012
416 txs.flags = IEEE80211_RATECTL_STATUS_LONG_RETRY;
417 txs.long_retries = ntries;
418 if (rpt->rptb7 & R92C_RPTB7_PKT_OK)
419 txs.status = IEEE80211_RATECTL_TX_SUCCESS;
420 else if (rpt->rptb6 & R92C_RPTB6_RETRY_OVER)
421 txs.status = IEEE80211_RATECTL_TX_FAIL_LONG; /* XXX */
422 else if (rpt->rptb6 & R92C_RPTB6_LIFE_EXPIRE)
423 txs.status = IEEE80211_RATECTL_TX_FAIL_EXPIRED;
425 txs.status = IEEE80211_RATECTL_TX_FAIL_UNSPECIFIED;
426 ieee80211_ratectl_tx_complete(ni, &txs);
428 struct ieee80211vap *vap = ni->ni_vap;
429 if (rpt->rptb7 & R92C_RPTB7_PKT_OK) {
430 ieee80211_ratectl_tx_complete(vap, ni,
431 IEEE80211_RATECTL_TX_SUCCESS, &ntries, NULL);
433 ieee80211_ratectl_tx_complete(vap, ni,
434 IEEE80211_RATECTL_TX_FAILURE, &ntries, NULL);
438 RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, "%s: macid %u, ni is NULL\n",
443 #ifdef IEEE80211_SUPPORT_SUPERG
444 if (sc->sc_tx_n_active > 0 && --sc->sc_tx_n_active <= 1)
445 rtwn_cmd_sleepable(sc, NULL, 0, rtwn_ff_flush_all);
450 r92c_handle_c2h_task(struct rtwn_softc *sc, union sec_param *data)
452 const uint16_t off = R92C_C2H_EVT_MSG + sizeof(struct r92c_c2h_evt);
453 struct r92c_softc *rs = sc->sc_priv;
454 uint16_t buf[R92C_C2H_MSG_MAX_LEN / 2 + 1];
455 uint8_t id, len, status;
458 /* Do not reschedule the task if device is not running. */
459 if (!(sc->sc_flags & RTWN_RUNNING))
462 /* Read current status. */
463 status = rtwn_read_1(sc, R92C_C2H_EVT_CLEAR);
464 if (status == R92C_C2H_EVT_HOST_CLOSE)
465 goto end; /* nothing to do */
466 else if (status == R92C_C2H_EVT_FW_CLOSE) {
467 len = rtwn_read_1(sc, R92C_C2H_EVT_MSG);
468 id = MS(len, R92C_C2H_EVTB0_ID);
469 len = MS(len, R92C_C2H_EVTB0_LEN);
471 memset(buf, 0, sizeof(buf));
472 /* Try to optimize event reads. */
473 for (i = 0; i < len; i += 2)
474 buf[i / 2] = rtwn_read_2(sc, off + i);
475 KASSERT(i < sizeof(buf), ("%s: buffer overrun (%d >= %zu)!",
476 __func__, i, sizeof(buf)));
479 case R92C_C2H_EVT_TX_REPORT:
480 r92c_ratectl_tx_complete(sc, (uint8_t *)buf, len);
483 device_printf(sc->sc_dev,
484 "%s: C2H report %u (len %u) was not handled\n",
490 /* Prepare for next event. */
491 rtwn_write_1(sc, R92C_C2H_EVT_CLEAR, R92C_C2H_EVT_HOST_CLOSE);
494 /* Adjust timeout for next call. */
495 if (rs->rs_c2h_pending != 0) {
496 rs->rs_c2h_pending = 0;
497 rs->rs_c2h_paused = 0;
501 if (rs->rs_c2h_paused > R92C_TX_PAUSED_THRESHOLD)
502 rs->rs_c2h_timeout = hz;
504 rs->rs_c2h_timeout = MAX(hz / 100, 1);
506 /* Reschedule the task. */
507 callout_reset(&rs->rs_c2h_report, rs->rs_c2h_timeout,
508 r92c_handle_c2h_report, sc);
512 r92c_handle_c2h_report(void *arg)
514 struct rtwn_softc *sc = arg;
516 rtwn_cmd_sleepable(sc, NULL, 0, r92c_handle_c2h_task);
519 #endif /* RTWN_WITHOUT_UCODE */