529 lines
15 KiB
C
529 lines
15 KiB
C
/* $OpenBSD: if_iwm.c,v 1.39 2015/03/23 00:35:19 jsg Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2014 genua mbh <info@genua.de>
|
|
* Copyright (c) 2014 Fixup Software Ltd.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
/*-
|
|
* Based on BSD-licensed source modules in the Linux iwlwifi driver,
|
|
* which were used as the reference documentation for this implementation.
|
|
*
|
|
* Driver version we are currently based off of is
|
|
* Linux 3.14.3 (tag id a2df521e42b1d9a23f620ac79dbfe8655a8391dd)
|
|
*
|
|
***********************************************************************
|
|
*
|
|
* This file is provided under a dual BSD/GPLv2 license. When using or
|
|
* redistributing this file, you may do so under either license.
|
|
*
|
|
* GPL LICENSE SUMMARY
|
|
*
|
|
* Copyright(c) 2007 - 2013 Intel Corporation. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of version 2 of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
|
|
* USA
|
|
*
|
|
* The full GNU General Public License is included in this distribution
|
|
* in the file called COPYING.
|
|
*
|
|
* Contact Information:
|
|
* Intel Linux Wireless <ilw@linux.intel.com>
|
|
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
|
|
*
|
|
*
|
|
* BSD LICENSE
|
|
*
|
|
* Copyright(c) 2005 - 2013 Intel Corporation. All rights reserved.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* * Neither the name Intel Corporation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/*-
|
|
* Copyright (c) 2007-2010 Damien Bergamini <damien.bergamini@free.fr>
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
#include <sys/cdefs.h>
|
|
#include "opt_wlan.h"
|
|
#include "opt_iwm.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/endian.h>
|
|
#include <sys/firmware.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/mbuf.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/module.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/rman.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/sockio.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/linker.h>
|
|
|
|
#include <machine/bus.h>
|
|
#include <machine/endian.h>
|
|
#include <machine/resource.h>
|
|
|
|
#include <dev/pci/pcivar.h>
|
|
#include <dev/pci/pcireg.h>
|
|
|
|
#include <net/bpf.h>
|
|
|
|
#include <net/if.h>
|
|
#include <net/if_var.h>
|
|
#include <net/if_arp.h>
|
|
#include <net/if_dl.h>
|
|
#include <net/if_media.h>
|
|
#include <net/if_types.h>
|
|
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_systm.h>
|
|
#include <netinet/if_ether.h>
|
|
#include <netinet/ip.h>
|
|
|
|
#include <net80211/ieee80211_var.h>
|
|
#include <net80211/ieee80211_regdomain.h>
|
|
#include <net80211/ieee80211_ratectl.h>
|
|
#include <net80211/ieee80211_radiotap.h>
|
|
|
|
#include <dev/iwm/if_iwmreg.h>
|
|
#include <dev/iwm/if_iwmvar.h>
|
|
#include <dev/iwm/if_iwm_config.h>
|
|
#include <dev/iwm/if_iwm_debug.h>
|
|
#include <dev/iwm/if_iwm_binding.h>
|
|
#include <dev/iwm/if_iwm_util.h>
|
|
#include <dev/iwm/if_iwm_pcie_trans.h>
|
|
|
|
/*
|
|
* Send a command to the firmware. We try to implement the Linux
|
|
* driver interface for the routine.
|
|
* mostly from if_iwn (iwn_cmd()).
|
|
*
|
|
* For now, we always copy the first part and map the second one (if it exists).
|
|
*/
|
|
int
|
|
iwm_send_cmd(struct iwm_softc *sc, struct iwm_host_cmd *hcmd)
|
|
{
|
|
struct iwm_tx_ring *ring = &sc->txq[IWM_CMD_QUEUE];
|
|
struct iwm_tfd *desc;
|
|
struct iwm_tx_data *txdata = NULL;
|
|
struct iwm_device_cmd *cmd;
|
|
struct mbuf *m;
|
|
bus_dma_segment_t seg;
|
|
bus_addr_t paddr;
|
|
uint32_t addr_lo;
|
|
int error = 0, i, paylen, off;
|
|
int code;
|
|
int async, wantresp;
|
|
int group_id;
|
|
int nsegs;
|
|
size_t hdrlen, datasz;
|
|
uint8_t *data;
|
|
|
|
code = hcmd->id;
|
|
async = hcmd->flags & IWM_CMD_ASYNC;
|
|
wantresp = hcmd->flags & IWM_CMD_WANT_SKB;
|
|
data = NULL;
|
|
|
|
for (i = 0, paylen = 0; i < nitems(hcmd->len); i++) {
|
|
paylen += hcmd->len[i];
|
|
}
|
|
|
|
/* if the command wants an answer, busy sc_cmd_resp */
|
|
if (wantresp) {
|
|
KASSERT(!async, ("invalid async parameter"));
|
|
while (sc->sc_wantresp != -1)
|
|
msleep(&sc->sc_wantresp, &sc->sc_mtx, 0, "iwmcmdsl", 0);
|
|
sc->sc_wantresp = ring->qid << 16 | ring->cur;
|
|
IWM_DPRINTF(sc, IWM_DEBUG_CMD,
|
|
"wantresp is %x\n", sc->sc_wantresp);
|
|
}
|
|
|
|
/*
|
|
* Is the hardware still available? (after e.g. above wait).
|
|
*/
|
|
if (sc->sc_flags & IWM_FLAG_STOPPED) {
|
|
error = ENXIO;
|
|
goto out;
|
|
}
|
|
|
|
desc = &ring->desc[ring->cur];
|
|
txdata = &ring->data[ring->cur];
|
|
|
|
group_id = iwm_cmd_groupid(code);
|
|
if (group_id != 0) {
|
|
hdrlen = sizeof(cmd->hdr_wide);
|
|
datasz = sizeof(cmd->data_wide);
|
|
} else {
|
|
hdrlen = sizeof(cmd->hdr);
|
|
datasz = sizeof(cmd->data);
|
|
}
|
|
|
|
if (paylen > datasz) {
|
|
IWM_DPRINTF(sc, IWM_DEBUG_CMD,
|
|
"large command paylen=%u len0=%u\n",
|
|
paylen, hcmd->len[0]);
|
|
/* Command is too large */
|
|
size_t totlen = hdrlen + paylen;
|
|
if (paylen > IWM_MAX_CMD_PAYLOAD_SIZE) {
|
|
device_printf(sc->sc_dev,
|
|
"firmware command too long (%zd bytes)\n",
|
|
totlen);
|
|
error = EINVAL;
|
|
goto out;
|
|
}
|
|
m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, IWM_RBUF_SIZE);
|
|
if (m == NULL) {
|
|
error = ENOBUFS;
|
|
goto out;
|
|
}
|
|
|
|
m->m_len = m->m_pkthdr.len = m->m_ext.ext_size;
|
|
error = bus_dmamap_load_mbuf_sg(ring->data_dmat,
|
|
txdata->map, m, &seg, &nsegs, BUS_DMA_NOWAIT);
|
|
if (error != 0) {
|
|
device_printf(sc->sc_dev,
|
|
"%s: can't map mbuf, error %d\n", __func__, error);
|
|
m_freem(m);
|
|
goto out;
|
|
}
|
|
txdata->m = m; /* mbuf will be freed in iwm_cmd_done() */
|
|
cmd = mtod(m, struct iwm_device_cmd *);
|
|
paddr = seg.ds_addr;
|
|
} else {
|
|
cmd = &ring->cmd[ring->cur];
|
|
paddr = txdata->cmd_paddr;
|
|
}
|
|
|
|
if (group_id != 0) {
|
|
cmd->hdr_wide.opcode = iwm_cmd_opcode(code);
|
|
cmd->hdr_wide.group_id = group_id;
|
|
cmd->hdr_wide.qid = ring->qid;
|
|
cmd->hdr_wide.idx = ring->cur;
|
|
cmd->hdr_wide.length = htole16(paylen);
|
|
cmd->hdr_wide.version = iwm_cmd_version(code);
|
|
data = cmd->data_wide;
|
|
} else {
|
|
cmd->hdr.code = iwm_cmd_opcode(code);
|
|
cmd->hdr.flags = 0;
|
|
cmd->hdr.qid = ring->qid;
|
|
cmd->hdr.idx = ring->cur;
|
|
data = cmd->data;
|
|
}
|
|
|
|
for (i = 0, off = 0; i < nitems(hcmd->data); i++) {
|
|
if (hcmd->len[i] == 0)
|
|
continue;
|
|
memcpy(data + off, hcmd->data[i], hcmd->len[i]);
|
|
off += hcmd->len[i];
|
|
}
|
|
KASSERT(off == paylen, ("off %d != paylen %d", off, paylen));
|
|
|
|
/* lo field is not aligned */
|
|
addr_lo = htole32((uint32_t)paddr);
|
|
memcpy(&desc->tbs[0].lo, &addr_lo, sizeof(uint32_t));
|
|
desc->tbs[0].hi_n_len = htole16(iwm_get_dma_hi_addr(paddr)
|
|
| ((hdrlen + paylen) << 4));
|
|
desc->num_tbs = 1;
|
|
|
|
IWM_DPRINTF(sc, IWM_DEBUG_CMD,
|
|
"iwm_send_cmd 0x%x size=%lu %s\n",
|
|
code,
|
|
(unsigned long) (hcmd->len[0] + hcmd->len[1] + hdrlen),
|
|
async ? " (async)" : "");
|
|
|
|
if (paylen > datasz) {
|
|
bus_dmamap_sync(ring->data_dmat, txdata->map,
|
|
BUS_DMASYNC_PREWRITE);
|
|
} else {
|
|
bus_dmamap_sync(ring->cmd_dma.tag, ring->cmd_dma.map,
|
|
BUS_DMASYNC_PREWRITE);
|
|
}
|
|
bus_dmamap_sync(ring->desc_dma.tag, ring->desc_dma.map,
|
|
BUS_DMASYNC_PREWRITE);
|
|
|
|
error = iwm_pcie_set_cmd_in_flight(sc);
|
|
if (error)
|
|
goto out;
|
|
ring->queued++;
|
|
|
|
#if 0
|
|
iwm_update_sched(sc, ring->qid, ring->cur, 0, 0);
|
|
#endif
|
|
IWM_DPRINTF(sc, IWM_DEBUG_CMD,
|
|
"sending command 0x%x qid %d, idx %d\n",
|
|
code, ring->qid, ring->cur);
|
|
|
|
/* Kick command ring. */
|
|
ring->cur = (ring->cur + 1) % IWM_TX_RING_COUNT;
|
|
IWM_WRITE(sc, IWM_HBUS_TARG_WRPTR, ring->qid << 8 | ring->cur);
|
|
|
|
if (!async) {
|
|
/* m..m-mmyy-mmyyyy-mym-ym m-my generation */
|
|
int generation = sc->sc_generation;
|
|
error = msleep(desc, &sc->sc_mtx, PCATCH, "iwmcmd", hz);
|
|
if (error == 0) {
|
|
/* if hardware is no longer up, return error */
|
|
if (generation != sc->sc_generation) {
|
|
error = ENXIO;
|
|
} else {
|
|
hcmd->resp_pkt = (void *)sc->sc_cmd_resp;
|
|
}
|
|
}
|
|
}
|
|
out:
|
|
if (wantresp && error != 0) {
|
|
iwm_free_resp(sc, hcmd);
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
/* iwlwifi: mvm/utils.c */
|
|
int
|
|
iwm_send_cmd_pdu(struct iwm_softc *sc, uint32_t id,
|
|
uint32_t flags, uint16_t len, const void *data)
|
|
{
|
|
struct iwm_host_cmd cmd = {
|
|
.id = id,
|
|
.len = { len, },
|
|
.data = { data, },
|
|
.flags = flags,
|
|
};
|
|
|
|
return iwm_send_cmd(sc, &cmd);
|
|
}
|
|
|
|
/* iwlwifi: mvm/utils.c */
|
|
int
|
|
iwm_send_cmd_status(struct iwm_softc *sc,
|
|
struct iwm_host_cmd *cmd, uint32_t *status)
|
|
{
|
|
struct iwm_rx_packet *pkt;
|
|
struct iwm_cmd_response *resp;
|
|
int error, resp_len;
|
|
|
|
KASSERT((cmd->flags & IWM_CMD_WANT_SKB) == 0,
|
|
("invalid command"));
|
|
cmd->flags |= IWM_CMD_SYNC | IWM_CMD_WANT_SKB;
|
|
|
|
if ((error = iwm_send_cmd(sc, cmd)) != 0)
|
|
return error;
|
|
pkt = cmd->resp_pkt;
|
|
|
|
/* Can happen if RFKILL is asserted */
|
|
if (!pkt) {
|
|
error = 0;
|
|
goto out_free_resp;
|
|
}
|
|
|
|
if (pkt->hdr.flags & IWM_CMD_FAILED_MSK) {
|
|
error = EIO;
|
|
goto out_free_resp;
|
|
}
|
|
|
|
resp_len = iwm_rx_packet_payload_len(pkt);
|
|
if (resp_len != sizeof(*resp)) {
|
|
error = EIO;
|
|
goto out_free_resp;
|
|
}
|
|
|
|
resp = (void *)pkt->data;
|
|
*status = le32toh(resp->status);
|
|
out_free_resp:
|
|
iwm_free_resp(sc, cmd);
|
|
return error;
|
|
}
|
|
|
|
/* iwlwifi/mvm/utils.c */
|
|
int
|
|
iwm_send_cmd_pdu_status(struct iwm_softc *sc, uint32_t id,
|
|
uint16_t len, const void *data, uint32_t *status)
|
|
{
|
|
struct iwm_host_cmd cmd = {
|
|
.id = id,
|
|
.len = { len, },
|
|
.data = { data, },
|
|
};
|
|
|
|
return iwm_send_cmd_status(sc, &cmd, status);
|
|
}
|
|
|
|
void
|
|
iwm_free_resp(struct iwm_softc *sc, struct iwm_host_cmd *hcmd)
|
|
{
|
|
KASSERT(sc->sc_wantresp != -1, ("already freed"));
|
|
KASSERT((hcmd->flags & (IWM_CMD_WANT_SKB|IWM_CMD_SYNC))
|
|
== (IWM_CMD_WANT_SKB|IWM_CMD_SYNC), ("invalid flags"));
|
|
sc->sc_wantresp = -1;
|
|
wakeup(&sc->sc_wantresp);
|
|
}
|
|
|
|
static void
|
|
iwm_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
|
|
{
|
|
if (error != 0)
|
|
return;
|
|
KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs));
|
|
*(bus_addr_t *)arg = segs[0].ds_addr;
|
|
}
|
|
|
|
int
|
|
iwm_dma_contig_alloc(bus_dma_tag_t tag, struct iwm_dma_info *dma,
|
|
bus_size_t size, bus_size_t alignment)
|
|
{
|
|
int error;
|
|
|
|
dma->tag = NULL;
|
|
dma->map = NULL;
|
|
dma->size = size;
|
|
dma->vaddr = NULL;
|
|
|
|
error = bus_dma_tag_create(tag, alignment,
|
|
0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, size,
|
|
1, size, 0, NULL, NULL, &dma->tag);
|
|
if (error != 0)
|
|
goto fail;
|
|
|
|
error = bus_dmamem_alloc(dma->tag, (void **)&dma->vaddr,
|
|
BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT, &dma->map);
|
|
if (error != 0)
|
|
goto fail;
|
|
|
|
error = bus_dmamap_load(dma->tag, dma->map, dma->vaddr, size,
|
|
iwm_dma_map_addr, &dma->paddr, BUS_DMA_NOWAIT);
|
|
if (error != 0) {
|
|
bus_dmamem_free(dma->tag, dma->vaddr, dma->map);
|
|
dma->vaddr = NULL;
|
|
goto fail;
|
|
}
|
|
|
|
bus_dmamap_sync(dma->tag, dma->map, BUS_DMASYNC_PREWRITE);
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
iwm_dma_contig_free(dma);
|
|
|
|
return error;
|
|
}
|
|
|
|
void
|
|
iwm_dma_contig_free(struct iwm_dma_info *dma)
|
|
{
|
|
if (dma->vaddr != NULL) {
|
|
bus_dmamap_sync(dma->tag, dma->map,
|
|
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
|
|
bus_dmamap_unload(dma->tag, dma->map);
|
|
bus_dmamem_free(dma->tag, dma->vaddr, dma->map);
|
|
dma->vaddr = NULL;
|
|
}
|
|
if (dma->tag != NULL) {
|
|
bus_dma_tag_destroy(dma->tag);
|
|
dma->tag = NULL;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* iwm_send_lq_cmd() - Send link quality command
|
|
* @init: This command is sent as part of station initialization right
|
|
* after station has been added.
|
|
*
|
|
* The link quality command is sent as the last step of station creation.
|
|
* This is the special case in which init is set and we call a callback in
|
|
* this case to clear the state indicating that station creation is in
|
|
* progress.
|
|
*/
|
|
int
|
|
iwm_send_lq_cmd(struct iwm_softc *sc, struct iwm_lq_cmd *lq, boolean_t init)
|
|
{
|
|
struct iwm_host_cmd cmd = {
|
|
.id = IWM_LQ_CMD,
|
|
.len = { sizeof(struct iwm_lq_cmd), },
|
|
.flags = init ? 0 : IWM_CMD_ASYNC,
|
|
.data = { lq, },
|
|
};
|
|
|
|
if (lq->sta_id == IWM_STATION_COUNT)
|
|
return EINVAL;
|
|
|
|
return iwm_send_cmd(sc, &cmd);
|
|
}
|
|
|
|
boolean_t
|
|
iwm_rx_diversity_allowed(struct iwm_softc *sc)
|
|
{
|
|
if (num_of_ant(iwm_get_valid_rx_ant(sc)) == 1)
|
|
return FALSE;
|
|
|
|
/*
|
|
* XXX Also return FALSE when SMPS (Spatial Multiplexing Powersave)
|
|
* is used on any vap (in the future).
|
|
*/
|
|
|
|
return TRUE;
|
|
}
|