404 lines
11 KiB
C
404 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
|
|
/*
|
|
* Copyright (C) 2012-2014, 2018-2022 Intel Corporation
|
|
* Copyright (C) 2013-2014 Intel Mobile Communications GmbH
|
|
* Copyright (C) 2017 Intel Deutschland GmbH
|
|
*/
|
|
#include <net/mac80211.h>
|
|
#include "fw-api.h"
|
|
#include "mvm.h"
|
|
|
|
/* Maps the driver specific channel width definition to the fw values */
|
|
u8 iwl_mvm_get_channel_width(struct cfg80211_chan_def *chandef)
|
|
{
|
|
switch (chandef->width) {
|
|
case NL80211_CHAN_WIDTH_20_NOHT:
|
|
case NL80211_CHAN_WIDTH_20:
|
|
return IWL_PHY_CHANNEL_MODE20;
|
|
case NL80211_CHAN_WIDTH_40:
|
|
return IWL_PHY_CHANNEL_MODE40;
|
|
case NL80211_CHAN_WIDTH_80:
|
|
return IWL_PHY_CHANNEL_MODE80;
|
|
case NL80211_CHAN_WIDTH_160:
|
|
return IWL_PHY_CHANNEL_MODE160;
|
|
case NL80211_CHAN_WIDTH_320:
|
|
return IWL_PHY_CHANNEL_MODE320;
|
|
default:
|
|
WARN(1, "Invalid channel width=%u", chandef->width);
|
|
return IWL_PHY_CHANNEL_MODE20;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Maps the driver specific control channel position (relative to the center
|
|
* freq) definitions to the the fw values
|
|
*/
|
|
u8 iwl_mvm_get_ctrl_pos(struct cfg80211_chan_def *chandef)
|
|
{
|
|
int offs = chandef->chan->center_freq - chandef->center_freq1;
|
|
int abs_offs = abs(offs);
|
|
u8 ret;
|
|
|
|
if (offs == 0) {
|
|
/*
|
|
* The FW is expected to check the control channel position only
|
|
* when in HT/VHT and the channel width is not 20MHz. Return
|
|
* this value as the default one.
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
/* this results in a value 0-7, i.e. fitting into 0b0111 */
|
|
ret = (abs_offs - 10) / 20;
|
|
/*
|
|
* But we need the value to be in 0b1011 because 0b0100 is
|
|
* IWL_PHY_CTRL_POS_ABOVE, so shift bit 2 up to land in
|
|
* IWL_PHY_CTRL_POS_OFFS_EXT (0b1000)
|
|
*/
|
|
ret = (ret & IWL_PHY_CTRL_POS_OFFS_MSK) |
|
|
((ret & BIT(2)) << 1);
|
|
/* and add the above bit */
|
|
ret |= (offs > 0) * IWL_PHY_CTRL_POS_ABOVE;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Construct the generic fields of the PHY context command
|
|
*/
|
|
static void iwl_mvm_phy_ctxt_cmd_hdr(struct iwl_mvm_phy_ctxt *ctxt,
|
|
struct iwl_phy_context_cmd *cmd,
|
|
u32 action)
|
|
{
|
|
cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(ctxt->id,
|
|
ctxt->color));
|
|
cmd->action = cpu_to_le32(action);
|
|
}
|
|
|
|
static void iwl_mvm_phy_ctxt_set_rxchain(struct iwl_mvm *mvm,
|
|
struct iwl_mvm_phy_ctxt *ctxt,
|
|
__le32 *rxchain_info,
|
|
u8 chains_static,
|
|
u8 chains_dynamic)
|
|
{
|
|
u8 active_cnt, idle_cnt;
|
|
|
|
/* Set rx the chains */
|
|
idle_cnt = chains_static;
|
|
active_cnt = chains_dynamic;
|
|
|
|
/* In scenarios where we only ever use a single-stream rates,
|
|
* i.e. legacy 11b/g/a associations, single-stream APs or even
|
|
* static SMPS, enable both chains to get diversity, improving
|
|
* the case where we're far enough from the AP that attenuation
|
|
* between the two antennas is sufficiently different to impact
|
|
* performance.
|
|
*/
|
|
if (active_cnt == 1 && iwl_mvm_rx_diversity_allowed(mvm, ctxt)) {
|
|
idle_cnt = 2;
|
|
active_cnt = 2;
|
|
}
|
|
|
|
/*
|
|
* If the firmware requested it, then we know that it supports
|
|
* getting zero for the values to indicate "use one, but pick
|
|
* which one yourself", which means it can dynamically pick one
|
|
* that e.g. has better RSSI.
|
|
*/
|
|
if (mvm->fw_static_smps_request && active_cnt == 1 && idle_cnt == 1) {
|
|
idle_cnt = 0;
|
|
active_cnt = 0;
|
|
}
|
|
|
|
*rxchain_info = cpu_to_le32(iwl_mvm_get_valid_rx_ant(mvm) <<
|
|
PHY_RX_CHAIN_VALID_POS);
|
|
*rxchain_info |= cpu_to_le32(idle_cnt << PHY_RX_CHAIN_CNT_POS);
|
|
*rxchain_info |= cpu_to_le32(active_cnt <<
|
|
PHY_RX_CHAIN_MIMO_CNT_POS);
|
|
#ifdef CONFIG_IWLWIFI_DEBUGFS
|
|
if (unlikely(mvm->dbgfs_rx_phyinfo))
|
|
*rxchain_info = cpu_to_le32(mvm->dbgfs_rx_phyinfo);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Add the phy configuration to the PHY context command
|
|
*/
|
|
static void iwl_mvm_phy_ctxt_cmd_data_v1(struct iwl_mvm *mvm,
|
|
struct iwl_mvm_phy_ctxt *ctxt,
|
|
struct iwl_phy_context_cmd_v1 *cmd,
|
|
struct cfg80211_chan_def *chandef,
|
|
u8 chains_static, u8 chains_dynamic)
|
|
{
|
|
struct iwl_phy_context_cmd_tail *tail =
|
|
iwl_mvm_chan_info_cmd_tail(mvm, &cmd->ci);
|
|
|
|
/* Set the channel info data */
|
|
iwl_mvm_set_chan_info_chandef(mvm, &cmd->ci, chandef);
|
|
|
|
iwl_mvm_phy_ctxt_set_rxchain(mvm, ctxt, &tail->rxchain_info,
|
|
chains_static, chains_dynamic);
|
|
|
|
tail->txchain_info = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
|
|
}
|
|
|
|
/*
|
|
* Add the phy configuration to the PHY context command
|
|
*/
|
|
static void iwl_mvm_phy_ctxt_cmd_data(struct iwl_mvm *mvm,
|
|
struct iwl_mvm_phy_ctxt *ctxt,
|
|
struct iwl_phy_context_cmd *cmd,
|
|
struct cfg80211_chan_def *chandef,
|
|
u8 chains_static, u8 chains_dynamic)
|
|
{
|
|
cmd->lmac_id = cpu_to_le32(iwl_mvm_get_lmac_id(mvm->fw,
|
|
chandef->chan->band));
|
|
|
|
/* Set the channel info data */
|
|
iwl_mvm_set_chan_info_chandef(mvm, &cmd->ci, chandef);
|
|
|
|
/* we only support RLC command version 2 */
|
|
if (iwl_fw_lookup_cmd_ver(mvm->fw, WIDE_ID(DATA_PATH_GROUP, RLC_CONFIG_CMD), 0) < 2)
|
|
iwl_mvm_phy_ctxt_set_rxchain(mvm, ctxt, &cmd->rxchain_info,
|
|
chains_static, chains_dynamic);
|
|
}
|
|
|
|
static int iwl_mvm_phy_send_rlc(struct iwl_mvm *mvm,
|
|
struct iwl_mvm_phy_ctxt *ctxt,
|
|
u8 chains_static, u8 chains_dynamic)
|
|
{
|
|
struct iwl_rlc_config_cmd cmd = {
|
|
.phy_id = cpu_to_le32(ctxt->id),
|
|
};
|
|
|
|
if (iwl_fw_lookup_cmd_ver(mvm->fw, WIDE_ID(DATA_PATH_GROUP, RLC_CONFIG_CMD), 0) < 2)
|
|
return 0;
|
|
|
|
BUILD_BUG_ON(IWL_RLC_CHAIN_INFO_DRIVER_FORCE !=
|
|
PHY_RX_CHAIN_DRIVER_FORCE_MSK);
|
|
BUILD_BUG_ON(IWL_RLC_CHAIN_INFO_VALID !=
|
|
PHY_RX_CHAIN_VALID_MSK);
|
|
BUILD_BUG_ON(IWL_RLC_CHAIN_INFO_FORCE !=
|
|
PHY_RX_CHAIN_FORCE_SEL_MSK);
|
|
BUILD_BUG_ON(IWL_RLC_CHAIN_INFO_FORCE_MIMO !=
|
|
PHY_RX_CHAIN_FORCE_MIMO_SEL_MSK);
|
|
BUILD_BUG_ON(IWL_RLC_CHAIN_INFO_COUNT != PHY_RX_CHAIN_CNT_MSK);
|
|
BUILD_BUG_ON(IWL_RLC_CHAIN_INFO_MIMO_COUNT !=
|
|
PHY_RX_CHAIN_MIMO_CNT_MSK);
|
|
|
|
iwl_mvm_phy_ctxt_set_rxchain(mvm, ctxt, &cmd.rlc.rx_chain_info,
|
|
chains_static, chains_dynamic);
|
|
|
|
return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(RLC_CONFIG_CMD,
|
|
DATA_PATH_GROUP, 2),
|
|
0, sizeof(cmd), &cmd);
|
|
}
|
|
|
|
/*
|
|
* Send a command to apply the current phy configuration. The command is send
|
|
* only if something in the configuration changed: in case that this is the
|
|
* first time that the phy configuration is applied or in case that the phy
|
|
* configuration changed from the previous apply.
|
|
*/
|
|
static int iwl_mvm_phy_ctxt_apply(struct iwl_mvm *mvm,
|
|
struct iwl_mvm_phy_ctxt *ctxt,
|
|
struct cfg80211_chan_def *chandef,
|
|
u8 chains_static, u8 chains_dynamic,
|
|
u32 action)
|
|
{
|
|
int ret;
|
|
int ver = iwl_fw_lookup_cmd_ver(mvm->fw, PHY_CONTEXT_CMD, 1);
|
|
|
|
if (ver == 3 || ver == 4) {
|
|
struct iwl_phy_context_cmd cmd = {};
|
|
|
|
/* Set the command header fields */
|
|
iwl_mvm_phy_ctxt_cmd_hdr(ctxt, &cmd, action);
|
|
|
|
/* Set the command data */
|
|
iwl_mvm_phy_ctxt_cmd_data(mvm, ctxt, &cmd, chandef,
|
|
chains_static,
|
|
chains_dynamic);
|
|
|
|
ret = iwl_mvm_send_cmd_pdu(mvm, PHY_CONTEXT_CMD,
|
|
0, sizeof(cmd), &cmd);
|
|
} else if (ver < 3) {
|
|
struct iwl_phy_context_cmd_v1 cmd = {};
|
|
u16 len = sizeof(cmd) - iwl_mvm_chan_info_padding(mvm);
|
|
|
|
/* Set the command header fields */
|
|
iwl_mvm_phy_ctxt_cmd_hdr(ctxt,
|
|
(struct iwl_phy_context_cmd *)&cmd,
|
|
action);
|
|
|
|
/* Set the command data */
|
|
iwl_mvm_phy_ctxt_cmd_data_v1(mvm, ctxt, &cmd, chandef,
|
|
chains_static,
|
|
chains_dynamic);
|
|
ret = iwl_mvm_send_cmd_pdu(mvm, PHY_CONTEXT_CMD,
|
|
0, len, &cmd);
|
|
} else {
|
|
IWL_ERR(mvm, "PHY ctxt cmd error ver %d not supported\n", ver);
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
|
|
if (ret) {
|
|
IWL_ERR(mvm, "PHY ctxt cmd error. ret=%d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
if (action != FW_CTXT_ACTION_REMOVE)
|
|
return iwl_mvm_phy_send_rlc(mvm, ctxt, chains_static,
|
|
chains_dynamic);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Send a command to add a PHY context based on the current HW configuration.
|
|
*/
|
|
int iwl_mvm_phy_ctxt_add(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt,
|
|
struct cfg80211_chan_def *chandef,
|
|
u8 chains_static, u8 chains_dynamic)
|
|
{
|
|
WARN_ON(!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
|
|
ctxt->ref);
|
|
lockdep_assert_held(&mvm->mutex);
|
|
|
|
ctxt->channel = chandef->chan;
|
|
ctxt->width = chandef->width;
|
|
ctxt->center_freq1 = chandef->center_freq1;
|
|
|
|
return iwl_mvm_phy_ctxt_apply(mvm, ctxt, chandef,
|
|
chains_static, chains_dynamic,
|
|
FW_CTXT_ACTION_ADD);
|
|
}
|
|
|
|
/*
|
|
* Update the number of references to the given PHY context. This is valid only
|
|
* in case the PHY context was already created, i.e., its reference count > 0.
|
|
*/
|
|
void iwl_mvm_phy_ctxt_ref(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt)
|
|
{
|
|
lockdep_assert_held(&mvm->mutex);
|
|
ctxt->ref++;
|
|
}
|
|
|
|
/*
|
|
* Send a command to modify the PHY context based on the current HW
|
|
* configuration. Note that the function does not check that the configuration
|
|
* changed.
|
|
*/
|
|
int iwl_mvm_phy_ctxt_changed(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt,
|
|
struct cfg80211_chan_def *chandef,
|
|
u8 chains_static, u8 chains_dynamic)
|
|
{
|
|
enum iwl_ctxt_action action = FW_CTXT_ACTION_MODIFY;
|
|
|
|
lockdep_assert_held(&mvm->mutex);
|
|
|
|
if (iwl_fw_lookup_cmd_ver(mvm->fw, WIDE_ID(DATA_PATH_GROUP, RLC_CONFIG_CMD), 0) >= 2 &&
|
|
ctxt->channel == chandef->chan &&
|
|
ctxt->width == chandef->width &&
|
|
ctxt->center_freq1 == chandef->center_freq1)
|
|
return iwl_mvm_phy_send_rlc(mvm, ctxt, chains_static,
|
|
chains_dynamic);
|
|
|
|
if (fw_has_capa(&mvm->fw->ucode_capa,
|
|
IWL_UCODE_TLV_CAPA_BINDING_CDB_SUPPORT) &&
|
|
ctxt->channel->band != chandef->chan->band) {
|
|
int ret;
|
|
|
|
/* ... remove it here ...*/
|
|
ret = iwl_mvm_phy_ctxt_apply(mvm, ctxt, chandef,
|
|
chains_static, chains_dynamic,
|
|
FW_CTXT_ACTION_REMOVE);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* ... and proceed to add it again */
|
|
action = FW_CTXT_ACTION_ADD;
|
|
}
|
|
|
|
ctxt->channel = chandef->chan;
|
|
ctxt->width = chandef->width;
|
|
ctxt->center_freq1 = chandef->center_freq1;
|
|
|
|
return iwl_mvm_phy_ctxt_apply(mvm, ctxt, chandef,
|
|
chains_static, chains_dynamic,
|
|
action);
|
|
}
|
|
|
|
void iwl_mvm_phy_ctxt_unref(struct iwl_mvm *mvm, struct iwl_mvm_phy_ctxt *ctxt)
|
|
{
|
|
lockdep_assert_held(&mvm->mutex);
|
|
|
|
if (WARN_ON_ONCE(!ctxt))
|
|
return;
|
|
|
|
ctxt->ref--;
|
|
|
|
/*
|
|
* Move unused phy's to a default channel. When the phy is moved the,
|
|
* fw will cleanup immediate quiet bit if it was previously set,
|
|
* otherwise we might not be able to reuse this phy.
|
|
*/
|
|
if (ctxt->ref == 0) {
|
|
struct ieee80211_channel *chan = NULL;
|
|
struct cfg80211_chan_def chandef;
|
|
struct ieee80211_supported_band *sband;
|
|
enum nl80211_band band;
|
|
int channel;
|
|
|
|
for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
|
|
sband = mvm->hw->wiphy->bands[band];
|
|
|
|
if (!sband)
|
|
continue;
|
|
|
|
for (channel = 0; channel < sband->n_channels; channel++)
|
|
if (!(sband->channels[channel].flags &
|
|
IEEE80211_CHAN_DISABLED)) {
|
|
chan = &sband->channels[channel];
|
|
break;
|
|
}
|
|
|
|
if (chan)
|
|
break;
|
|
}
|
|
|
|
if (WARN_ON(!chan))
|
|
return;
|
|
|
|
cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_NO_HT);
|
|
iwl_mvm_phy_ctxt_changed(mvm, ctxt, &chandef, 1, 1);
|
|
}
|
|
}
|
|
|
|
static void iwl_mvm_binding_iterator(void *_data, u8 *mac,
|
|
struct ieee80211_vif *vif)
|
|
{
|
|
unsigned long *data = _data;
|
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
|
|
|
|
if (!mvmvif->phy_ctxt)
|
|
return;
|
|
|
|
if (vif->type == NL80211_IFTYPE_STATION ||
|
|
vif->type == NL80211_IFTYPE_AP)
|
|
__set_bit(mvmvif->phy_ctxt->id, data);
|
|
}
|
|
|
|
int iwl_mvm_phy_ctx_count(struct iwl_mvm *mvm)
|
|
{
|
|
unsigned long phy_ctxt_counter = 0;
|
|
|
|
ieee80211_iterate_active_interfaces_atomic(mvm->hw,
|
|
IEEE80211_IFACE_ITER_NORMAL,
|
|
iwl_mvm_binding_iterator,
|
|
&phy_ctxt_counter);
|
|
|
|
return hweight8(phy_ctxt_counter);
|
|
}
|