1 /* $OpenBSD: if_iwm.c,v 1.39 2015/03/23 00:35:19 jsg Exp $ */
4 * Copyright (c) 2014 genua mbh <info@genua.de>
5 * Copyright (c) 2014 Fixup Software Ltd.
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 * Based on BSD-licensed source modules in the Linux iwlwifi driver,
22 * which were used as the reference documentation for this implementation.
24 * Driver version we are currently based off of is
25 * Linux 3.14.3 (tag id a2df521e42b1d9a23f620ac79dbfe8655a8391dd)
27 ***********************************************************************
29 * This file is provided under a dual BSD/GPLv2 license. When using or
30 * redistributing this file, you may do so under either license.
34 * Copyright(c) 2007 - 2013 Intel Corporation. All rights reserved.
36 * This program is free software; you can redistribute it and/or modify
37 * it under the terms of version 2 of the GNU General Public License as
38 * published by the Free Software Foundation.
40 * This program is distributed in the hope that it will be useful, but
41 * WITHOUT ANY WARRANTY; without even the implied warranty of
42 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
43 * General Public License for more details.
45 * You should have received a copy of the GNU General Public License
46 * along with this program; if not, write to the Free Software
47 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
50 * The full GNU General Public License is included in this distribution
51 * in the file called COPYING.
53 * Contact Information:
54 * Intel Linux Wireless <ilw@linux.intel.com>
55 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
60 * Copyright(c) 2005 - 2013 Intel Corporation. All rights reserved.
61 * All rights reserved.
63 * Redistribution and use in source and binary forms, with or without
64 * modification, are permitted provided that the following conditions
67 * * Redistributions of source code must retain the above copyright
68 * notice, this list of conditions and the following disclaimer.
69 * * Redistributions in binary form must reproduce the above copyright
70 * notice, this list of conditions and the following disclaimer in
71 * the documentation and/or other materials provided with the
73 * * Neither the name Intel Corporation nor the names of its
74 * contributors may be used to endorse or promote products derived
75 * from this software without specific prior written permission.
77 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
78 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
79 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
80 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
81 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
82 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
83 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
84 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
85 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
86 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
87 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
91 * Copyright (c) 2007-2010 Damien Bergamini <damien.bergamini@free.fr>
93 * Permission to use, copy, modify, and distribute this software for any
94 * purpose with or without fee is hereby granted, provided that the above
95 * copyright notice and this permission notice appear in all copies.
97 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
98 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
99 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
100 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
101 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
102 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
103 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
105 #include <sys/cdefs.h>
106 __FBSDID("$FreeBSD$");
108 #include <sys/param.h>
110 #include <sys/endian.h>
111 #include <sys/firmware.h>
112 #include <sys/kernel.h>
113 #include <sys/malloc.h>
114 #include <sys/mbuf.h>
115 #include <sys/mutex.h>
116 #include <sys/module.h>
117 #include <sys/proc.h>
118 #include <sys/rman.h>
119 #include <sys/socket.h>
120 #include <sys/sockio.h>
121 #include <sys/sysctl.h>
122 #include <sys/linker.h>
124 #include <machine/endian.h>
126 #include <bus/pci/pcivar.h>
127 #include <bus/pci/pcireg.h>
132 #include <net/if_var.h>
133 #include <net/if_arp.h>
134 #include <net/if_dl.h>
135 #include <net/if_media.h>
136 #include <net/if_types.h>
138 #include <netinet/in.h>
139 #include <netinet/in_systm.h>
140 #include <netinet/if_ether.h>
141 #include <netinet/ip.h>
143 #include <netproto/802_11/ieee80211_var.h>
144 #include <netproto/802_11/ieee80211_regdomain.h>
145 #include <netproto/802_11/ieee80211_ratectl.h>
146 #include <netproto/802_11/ieee80211_radiotap.h>
148 #include "if_iwmreg.h"
149 #include "if_iwmvar.h"
150 #include "if_iwm_debug.h"
151 #include "if_iwm_binding.h"
152 #include "if_iwm_util.h"
153 #include "if_iwm_pcie_trans.h"
155 #if defined(__DragonFly__)
156 int iwmsleep(void *chan, struct lock *lk, int flags, const char *wmesg, int to);
160 iwm_dma_map_mem(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
164 KASSERT(nsegs <= 2, ("too many DMA segments, %d should be <= 2",
167 KASSERT(segs[1].ds_addr == segs[0].ds_addr + segs[0].ds_len,
168 ("fragmented DMA memory"));
169 *(bus_addr_t *)arg = segs[0].ds_addr;
173 * Send a command to the firmware. We try to implement the Linux
174 * driver interface for the routine.
175 * mostly from if_iwn (iwn_cmd()).
177 * For now, we always copy the first part and map the second one (if it exists).
180 iwm_send_cmd(struct iwm_softc *sc, struct iwm_host_cmd *hcmd)
182 struct iwm_tx_ring *ring = &sc->txq[IWM_MVM_CMD_QUEUE];
183 struct iwm_tfd *desc;
184 struct iwm_tx_data *txdata = NULL;
185 struct iwm_device_cmd *cmd;
188 int error = 0, i, paylen, off;
192 size_t hdrlen, datasz;
196 async = hcmd->flags & IWM_CMD_ASYNC;
197 wantresp = hcmd->flags & IWM_CMD_WANT_SKB;
200 for (i = 0, paylen = 0; i < nitems(hcmd->len); i++) {
201 paylen += hcmd->len[i];
204 /* if the command wants an answer, busy sc_cmd_resp */
206 KASSERT(!async, ("invalid async parameter"));
207 while (sc->sc_wantresp != -1) {
208 #if defined(__DragonFly__)
209 iwmsleep(&sc->sc_wantresp, &sc->sc_lk, 0, "iwmcmdsl", 0);
211 msleep(&sc->sc_wantresp, &sc->sc_mtx, 0, "iwmcmdsl", 0);
214 sc->sc_wantresp = ring->qid << 16 | ring->cur;
215 IWM_DPRINTF(sc, IWM_DEBUG_CMD,
216 "wantresp is %x\n", sc->sc_wantresp);
220 * Is the hardware still available? (after e.g. above wait).
222 if (sc->sc_flags & IWM_FLAG_STOPPED) {
227 desc = &ring->desc[ring->cur];
228 txdata = &ring->data[ring->cur];
230 group_id = iwm_cmd_groupid(code);
232 hdrlen = sizeof(cmd->hdr_wide);
233 datasz = sizeof(cmd->data_wide);
235 hdrlen = sizeof(cmd->hdr);
236 datasz = sizeof(cmd->data);
239 if (paylen > datasz) {
240 IWM_DPRINTF(sc, IWM_DEBUG_CMD,
241 "large command paylen=%u len0=%u\n",
242 paylen, hcmd->len[0]);
243 /* Command is too large */
244 size_t totlen = hdrlen + paylen;
245 if (paylen > IWM_MAX_CMD_PAYLOAD_SIZE) {
246 device_printf(sc->sc_dev,
247 "firmware command too long (%zd bytes)\n",
253 error = bus_dmamem_alloc(ring->data_dmat, (void **)&cmd,
254 BUS_DMA_NOWAIT | BUS_DMA_COHERENT, &txdata->map);
257 KKASSERT(cmd != NULL);
258 error = bus_dmamap_load(ring->data_dmat, txdata->map,
259 cmd, totlen, iwm_dma_map_mem, &paddr, BUS_DMA_NOWAIT);
263 cmd = &ring->cmd[ring->cur];
264 paddr = txdata->cmd_paddr;
268 cmd->hdr_wide.opcode = iwm_cmd_opcode(code);
269 cmd->hdr_wide.group_id = group_id;
270 cmd->hdr_wide.qid = ring->qid;
271 cmd->hdr_wide.idx = ring->cur;
272 cmd->hdr_wide.length = htole16(paylen);
273 cmd->hdr_wide.version = iwm_cmd_version(code);
274 data = cmd->data_wide;
276 cmd->hdr.code = code;
278 cmd->hdr.qid = ring->qid;
279 cmd->hdr.idx = ring->cur;
283 for (i = 0, off = 0; i < nitems(hcmd->data); i++) {
284 if (hcmd->len[i] == 0)
286 memcpy(data + off, hcmd->data[i], hcmd->len[i]);
289 KASSERT(off == paylen, ("off %d != paylen %d", off, paylen));
291 /* lo field is not aligned */
292 addr_lo = htole32((uint32_t)paddr);
293 memcpy(&desc->tbs[0].lo, &addr_lo, sizeof(uint32_t));
294 desc->tbs[0].hi_n_len = htole16(iwm_get_dma_hi_addr(paddr)
295 | ((hdrlen + paylen) << 4));
298 IWM_DPRINTF(sc, IWM_DEBUG_CMD,
299 "iwm_send_cmd 0x%x size=%lu %s\n",
301 (unsigned long) (hcmd->len[0] + hcmd->len[1] + hdrlen),
302 async ? " (async)" : "");
304 if (paylen > datasz) {
305 bus_dmamap_sync(ring->data_dmat, txdata->map,
306 BUS_DMASYNC_PREWRITE);
308 bus_dmamap_sync(ring->cmd_dma.tag, ring->cmd_dma.map,
309 BUS_DMASYNC_PREWRITE);
311 bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
312 BUS_DMASYNC_PREWRITE);
314 IWM_SETBITS(sc, IWM_CSR_GP_CNTRL,
315 IWM_CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
316 if (!iwm_poll_bit(sc, IWM_CSR_GP_CNTRL,
317 IWM_CSR_GP_CNTRL_REG_VAL_MAC_ACCESS_EN,
318 (IWM_CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY |
319 IWM_CSR_GP_CNTRL_REG_FLAG_GOING_TO_SLEEP), 15000)) {
320 device_printf(sc->sc_dev,
321 "%s: acquiring device failed\n", __func__);
327 iwm_update_sched(sc, ring->qid, ring->cur, 0, 0);
329 IWM_DPRINTF(sc, IWM_DEBUG_CMD,
330 "sending command 0x%x qid %d, idx %d\n",
331 code, ring->qid, ring->cur);
333 /* Kick command ring. */
334 ring->cur = (ring->cur + 1) % IWM_TX_RING_COUNT;
335 IWM_WRITE(sc, IWM_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur);
338 /* m..m-mmyy-mmyyyy-mym-ym m-my generation */
339 int generation = sc->sc_generation;
340 #if defined(__DragonFly__)
341 error = iwmsleep(desc, &sc->sc_lk, PCATCH, "iwmcmd", hz);
343 error = msleep(desc, &sc->sc_mtx, PCATCH, "iwmcmd", hz);
346 /* if hardware is no longer up, return error */
347 if (generation != sc->sc_generation) {
350 hcmd->resp_pkt = (void *)sc->sc_cmd_resp;
355 if (cmd && paylen > datasz && txdata != NULL)
356 bus_dmamem_free(ring->data_dmat, cmd, txdata->map);
357 if (wantresp && error != 0) {
358 iwm_free_resp(sc, hcmd);
365 iwm_mvm_send_cmd_pdu(struct iwm_softc *sc, uint8_t id,
366 uint32_t flags, uint16_t len, const void *data)
368 struct iwm_host_cmd cmd = {
375 return iwm_send_cmd(sc, &cmd);
379 iwm_mvm_send_cmd_status(struct iwm_softc *sc,
380 struct iwm_host_cmd *cmd, uint32_t *status)
382 struct iwm_rx_packet *pkt;
383 struct iwm_cmd_response *resp;
386 KASSERT((cmd->flags & IWM_CMD_WANT_SKB) == 0,
387 ("invalid command"));
388 cmd->flags |= IWM_CMD_SYNC | IWM_CMD_WANT_SKB;
390 if ((error = iwm_send_cmd(sc, cmd)) != 0)
394 /* Can happen if RFKILL is asserted */
400 if (pkt->hdr.flags & IWM_CMD_FAILED_MSK) {
405 resp_len = iwm_rx_packet_payload_len(pkt);
406 if (resp_len != sizeof(*resp)) {
411 resp = (void *)pkt->data;
412 *status = le32toh(resp->status);
414 iwm_free_resp(sc, cmd);
419 iwm_mvm_send_cmd_pdu_status(struct iwm_softc *sc, uint8_t id,
420 uint16_t len, const void *data, uint32_t *status)
422 struct iwm_host_cmd cmd = {
428 return iwm_mvm_send_cmd_status(sc, &cmd, status);
432 iwm_free_resp(struct iwm_softc *sc, struct iwm_host_cmd *hcmd)
434 KASSERT(sc->sc_wantresp != -1, ("already freed"));
435 KASSERT((hcmd->flags & (IWM_CMD_WANT_SKB|IWM_CMD_SYNC))
436 == (IWM_CMD_WANT_SKB|IWM_CMD_SYNC), ("invalid flags"));
437 sc->sc_wantresp = -1;
438 wakeup(&sc->sc_wantresp);
442 iwm_fw_valid_tx_ant(struct iwm_softc *sc)
446 tx_ant = ((sc->sc_fw_phy_config & IWM_FW_PHY_CFG_TX_CHAIN)
447 >> IWM_FW_PHY_CFG_TX_CHAIN_POS);
449 if (sc->sc_nvm.valid_tx_ant)
450 tx_ant &= sc->sc_nvm.valid_tx_ant;
456 iwm_fw_valid_rx_ant(struct iwm_softc *sc)
460 rx_ant = ((sc->sc_fw_phy_config & IWM_FW_PHY_CFG_RX_CHAIN)
461 >> IWM_FW_PHY_CFG_RX_CHAIN_POS);
463 if (sc->sc_nvm.valid_rx_ant)
464 rx_ant &= sc->sc_nvm.valid_rx_ant;