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Date: Fri, 21 Jun 2024 15:51:26 +0800
From: David Lin <yu-hao.lin@....com>
To: linux-wireless@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
briannorris@...omium.org,
kvalo@...nel.org,
francesco@...cini.it,
tsung-hsien.hsieh@....com,
David Lin <yu-hao.lin@....com>
Subject: [PATCH 01/43] wifi: nxpwifi: add 11ac.c
Signed-off-by: David Lin <yu-hao.lin@....com>
---
drivers/net/wireless/nxp/nxpwifi/11ac.c | 366 ++++++++++++++++++++++++
1 file changed, 366 insertions(+)
create mode 100644 drivers/net/wireless/nxp/nxpwifi/11ac.c
diff --git a/drivers/net/wireless/nxp/nxpwifi/11ac.c b/drivers/net/wireless/nxp/nxpwifi/11ac.c
new file mode 100644
index 000000000000..3e14ee602cdc
--- /dev/null
+++ b/drivers/net/wireless/nxp/nxpwifi/11ac.c
@@ -0,0 +1,366 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * NXP Wireless LAN device driver: 802.11ac
+ *
+ * Copyright 2011-2024 NXP
+ */
+
+#include "decl.h"
+#include "ioctl.h"
+#include "fw.h"
+#include "main.h"
+#include "11ac.h"
+
+/* Tables of the MCS map to the highest data rate (in Mbps) supported
+ * for long GI.
+ */
+static const u16 max_rate_lgi_80MHZ[8][3] = {
+ {0x124, 0x15F, 0x186}, /* NSS = 1 */
+ {0x249, 0x2BE, 0x30C}, /* NSS = 2 */
+ {0x36D, 0x41D, 0x492}, /* NSS = 3 */
+ {0x492, 0x57C, 0x618}, /* NSS = 4 */
+ {0x5B6, 0x6DB, 0x79E}, /* NSS = 5 */
+ {0x6DB, 0x83A, 0x0}, /* NSS = 6 */
+ {0x7FF, 0x999, 0xAAA}, /* NSS = 7 */
+ {0x924, 0xAF8, 0xC30} /* NSS = 8 */
+};
+
+static const u16 max_rate_lgi_160MHZ[8][3] = {
+ {0x249, 0x2BE, 0x30C}, /* NSS = 1 */
+ {0x492, 0x57C, 0x618}, /* NSS = 2 */
+ {0x6DB, 0x83A, 0x0}, /* NSS = 3 */
+ {0x924, 0xAF8, 0xC30}, /* NSS = 4 */
+ {0xB6D, 0xDB6, 0xF3C}, /* NSS = 5 */
+ {0xDB6, 0x1074, 0x1248}, /* NSS = 6 */
+ {0xFFF, 0x1332, 0x1554}, /* NSS = 7 */
+ {0x1248, 0x15F0, 0x1860} /* NSS = 8 */
+};
+
+/* This function converts the 2-bit MCS map to the highest long GI
+ * VHT data rate.
+ */
+static u16
+nxpwifi_convert_mcsmap_to_maxrate(struct nxpwifi_private *priv,
+ u8 bands, u16 mcs_map)
+{
+ u8 i, nss, mcs;
+ u16 max_rate = 0;
+ u32 usr_vht_cap_info = 0;
+ struct nxpwifi_adapter *adapter = priv->adapter;
+
+ if (bands & BAND_AAC)
+ usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_a;
+ else
+ usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_bg;
+
+ /* find the max NSS supported */
+ nss = 1;
+ for (i = 1; i <= 8; i++) {
+ mcs = GET_VHTNSSMCS(mcs_map, i);
+ if (mcs < IEEE80211_VHT_MCS_NOT_SUPPORTED)
+ nss = i;
+ }
+ mcs = GET_VHTNSSMCS(mcs_map, nss);
+
+ /* if mcs is 3, nss must be 1 (NSS = 1). Default mcs to MCS 0~9 */
+ if (mcs == IEEE80211_VHT_MCS_NOT_SUPPORTED)
+ mcs = IEEE80211_VHT_MCS_SUPPORT_0_9;
+
+ if (GET_VHTCAP_CHWDSET(usr_vht_cap_info)) {
+ /* support 160 MHz */
+ max_rate = max_rate_lgi_160MHZ[nss - 1][mcs];
+ if (!max_rate)
+ /* MCS9 is not supported in NSS6 */
+ max_rate = max_rate_lgi_160MHZ[nss - 1][mcs - 1];
+ } else {
+ max_rate = max_rate_lgi_80MHZ[nss - 1][mcs];
+ if (!max_rate)
+ /* MCS9 is not supported in NSS3 */
+ max_rate = max_rate_lgi_80MHZ[nss - 1][mcs - 1];
+ }
+
+ return max_rate;
+}
+
+static void
+nxpwifi_fill_vht_cap_info(struct nxpwifi_private *priv,
+ struct ieee80211_vht_cap *vht_cap, u8 bands)
+{
+ struct nxpwifi_adapter *adapter = priv->adapter;
+
+ if (bands & BAND_A)
+ vht_cap->vht_cap_info =
+ cpu_to_le32(adapter->usr_dot_11ac_dev_cap_a);
+ else
+ vht_cap->vht_cap_info =
+ cpu_to_le32(adapter->usr_dot_11ac_dev_cap_bg);
+}
+
+void nxpwifi_fill_vht_cap_tlv(struct nxpwifi_private *priv,
+ struct ieee80211_vht_cap *vht_cap, u8 bands)
+{
+ struct nxpwifi_adapter *adapter = priv->adapter;
+ u16 mcs_map_user, mcs_map_resp, mcs_map_result;
+ u16 mcs_user, mcs_resp, nss, tmp;
+
+ /* Fill VHT cap info */
+ nxpwifi_fill_vht_cap_info(priv, vht_cap, bands);
+
+ /* rx MCS Set: find the minimum of the user rx mcs and ap rx mcs */
+ mcs_map_user = GET_DEVRXMCSMAP(adapter->usr_dot_11ac_mcs_support);
+ mcs_map_resp = le16_to_cpu(vht_cap->supp_mcs.rx_mcs_map);
+ mcs_map_result = 0;
+
+ for (nss = 1; nss <= 8; nss++) {
+ mcs_user = GET_VHTNSSMCS(mcs_map_user, nss);
+ mcs_resp = GET_VHTNSSMCS(mcs_map_resp, nss);
+
+ if (mcs_user == IEEE80211_VHT_MCS_NOT_SUPPORTED ||
+ mcs_resp == IEEE80211_VHT_MCS_NOT_SUPPORTED)
+ SET_VHTNSSMCS(mcs_map_result, nss,
+ IEEE80211_VHT_MCS_NOT_SUPPORTED);
+ else
+ SET_VHTNSSMCS(mcs_map_result, nss,
+ min(mcs_user, mcs_resp));
+ }
+
+ vht_cap->supp_mcs.rx_mcs_map = cpu_to_le16(mcs_map_result);
+
+ tmp = nxpwifi_convert_mcsmap_to_maxrate(priv, bands, mcs_map_result);
+ vht_cap->supp_mcs.rx_highest = cpu_to_le16(tmp);
+
+ /* tx MCS Set: find the minimum of the user tx mcs and ap tx mcs */
+ mcs_map_user = GET_DEVTXMCSMAP(adapter->usr_dot_11ac_mcs_support);
+ mcs_map_resp = le16_to_cpu(vht_cap->supp_mcs.tx_mcs_map);
+ mcs_map_result = 0;
+
+ for (nss = 1; nss <= 8; nss++) {
+ mcs_user = GET_VHTNSSMCS(mcs_map_user, nss);
+ mcs_resp = GET_VHTNSSMCS(mcs_map_resp, nss);
+ if (mcs_user == IEEE80211_VHT_MCS_NOT_SUPPORTED ||
+ mcs_resp == IEEE80211_VHT_MCS_NOT_SUPPORTED)
+ SET_VHTNSSMCS(mcs_map_result, nss,
+ IEEE80211_VHT_MCS_NOT_SUPPORTED);
+ else
+ SET_VHTNSSMCS(mcs_map_result, nss,
+ min(mcs_user, mcs_resp));
+ }
+
+ vht_cap->supp_mcs.tx_mcs_map = cpu_to_le16(mcs_map_result);
+
+ tmp = nxpwifi_convert_mcsmap_to_maxrate(priv, bands, mcs_map_result);
+ vht_cap->supp_mcs.tx_highest = cpu_to_le16(tmp);
+}
+
+int nxpwifi_cmd_append_11ac_tlv(struct nxpwifi_private *priv,
+ struct nxpwifi_bssdescriptor *bss_desc,
+ u8 **buffer)
+{
+ struct nxpwifi_ie_types_vhtcap *vht_cap;
+ struct nxpwifi_ie_types_oper_mode_ntf *oper_ntf;
+ struct ieee_types_oper_mode_ntf *ieee_oper_ntf;
+ struct nxpwifi_ie_types_vht_oper *vht_op;
+ struct nxpwifi_adapter *adapter = priv->adapter;
+ u8 supp_chwd_set;
+ u32 usr_vht_cap_info;
+ int ret_len = 0;
+
+ if (bss_desc->bss_band & BAND_A)
+ usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_a;
+ else
+ usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_bg;
+
+ /* VHT Capabilities IE */
+ if (bss_desc->bcn_vht_cap) {
+ vht_cap = (struct nxpwifi_ie_types_vhtcap *)*buffer;
+ memset(vht_cap, 0, sizeof(*vht_cap));
+ vht_cap->header.type = cpu_to_le16(WLAN_EID_VHT_CAPABILITY);
+ vht_cap->header.len =
+ cpu_to_le16(sizeof(struct ieee80211_vht_cap));
+ memcpy((u8 *)vht_cap + sizeof(struct nxpwifi_ie_types_header),
+ (u8 *)bss_desc->bcn_vht_cap,
+ le16_to_cpu(vht_cap->header.len));
+
+ nxpwifi_fill_vht_cap_tlv(priv, &vht_cap->vht_cap,
+ bss_desc->bss_band);
+ *buffer += sizeof(*vht_cap);
+ ret_len += sizeof(*vht_cap);
+ }
+
+ /* VHT Operation IE */
+ if (bss_desc->bcn_vht_oper) {
+ if (priv->bss_mode == NL80211_IFTYPE_STATION) {
+ vht_op = (struct nxpwifi_ie_types_vht_oper *)*buffer;
+ memset(vht_op, 0, sizeof(*vht_op));
+ vht_op->header.type =
+ cpu_to_le16(WLAN_EID_VHT_OPERATION);
+ vht_op->header.len = cpu_to_le16(sizeof(*vht_op) -
+ sizeof(struct nxpwifi_ie_types_header));
+ memcpy((u8 *)vht_op +
+ sizeof(struct nxpwifi_ie_types_header),
+ (u8 *)bss_desc->bcn_vht_oper,
+ le16_to_cpu(vht_op->header.len));
+
+ /* negotiate the channel width and central freq
+ * and keep the central freq as the peer suggests
+ */
+ supp_chwd_set = GET_VHTCAP_CHWDSET(usr_vht_cap_info);
+
+ switch (supp_chwd_set) {
+ case 0:
+ vht_op->chan_width =
+ min_t(u8, IEEE80211_VHT_CHANWIDTH_80MHZ,
+ bss_desc->bcn_vht_oper->chan_width);
+ break;
+ case 1:
+ vht_op->chan_width =
+ min_t(u8, IEEE80211_VHT_CHANWIDTH_160MHZ,
+ bss_desc->bcn_vht_oper->chan_width);
+ break;
+ case 2:
+ vht_op->chan_width =
+ min_t(u8, IEEE80211_VHT_CHANWIDTH_80P80MHZ,
+ bss_desc->bcn_vht_oper->chan_width);
+ break;
+ default:
+ vht_op->chan_width =
+ IEEE80211_VHT_CHANWIDTH_USE_HT;
+ break;
+ }
+
+ *buffer += sizeof(*vht_op);
+ ret_len += sizeof(*vht_op);
+ }
+ }
+
+ /* Operating Mode Notification IE */
+ if (bss_desc->oper_mode) {
+ ieee_oper_ntf = bss_desc->oper_mode;
+ oper_ntf = (void *)*buffer;
+ memset(oper_ntf, 0, sizeof(*oper_ntf));
+ oper_ntf->header.type = cpu_to_le16(WLAN_EID_OPMODE_NOTIF);
+ oper_ntf->header.len = cpu_to_le16(sizeof(u8));
+ oper_ntf->oper_mode = ieee_oper_ntf->oper_mode;
+ *buffer += sizeof(*oper_ntf);
+ ret_len += sizeof(*oper_ntf);
+ }
+
+ return ret_len;
+}
+
+int nxpwifi_cmd_11ac_cfg(struct nxpwifi_private *priv,
+ struct host_cmd_ds_command *cmd, u16 cmd_action,
+ struct nxpwifi_11ac_vht_cfg *cfg)
+{
+ struct host_cmd_11ac_vht_cfg *vhtcfg = &cmd->params.vht_cfg;
+
+ cmd->command = cpu_to_le16(HOST_CMD_11AC_CFG);
+ cmd->size = cpu_to_le16(sizeof(struct host_cmd_11ac_vht_cfg) +
+ S_DS_GEN);
+ vhtcfg->action = cpu_to_le16(cmd_action);
+ vhtcfg->band_config = cfg->band_config;
+ vhtcfg->misc_config = cfg->misc_config;
+ vhtcfg->cap_info = cpu_to_le32(cfg->cap_info);
+ vhtcfg->mcs_tx_set = cpu_to_le32(cfg->mcs_tx_set);
+ vhtcfg->mcs_rx_set = cpu_to_le32(cfg->mcs_rx_set);
+
+ return 0;
+}
+
+/* This function initializes the BlockACK setup information for given
+ * nxpwifi_private structure for 11ac enabled networks.
+ */
+void nxpwifi_set_11ac_ba_params(struct nxpwifi_private *priv)
+{
+ priv->add_ba_param.timeout = NXPWIFI_DEFAULT_BLOCK_ACK_TIMEOUT;
+
+ if (GET_BSS_ROLE(priv) == NXPWIFI_BSS_ROLE_UAP) {
+ priv->add_ba_param.tx_win_size =
+ NXPWIFI_11AC_UAP_AMPDU_DEF_TXWINSIZE;
+ priv->add_ba_param.rx_win_size =
+ NXPWIFI_11AC_UAP_AMPDU_DEF_RXWINSIZE;
+ } else {
+ priv->add_ba_param.tx_win_size =
+ NXPWIFI_11AC_STA_AMPDU_DEF_TXWINSIZE;
+ priv->add_ba_param.rx_win_size =
+ NXPWIFI_11AC_STA_AMPDU_DEF_RXWINSIZE;
+ }
+}
+
+bool nxpwifi_is_bss_in_11ac_mode(struct nxpwifi_private *priv)
+{
+ struct nxpwifi_bssdescriptor *bss_desc;
+ struct ieee80211_vht_operation *vht_oper;
+
+ bss_desc = &priv->curr_bss_params.bss_descriptor;
+ vht_oper = bss_desc->bcn_vht_oper;
+
+ if (!bss_desc->bcn_vht_cap || !vht_oper)
+ return false;
+
+ if (vht_oper->chan_width == IEEE80211_VHT_CHANWIDTH_USE_HT)
+ return false;
+
+ return true;
+}
+
+u8 nxpwifi_get_center_freq_index(struct nxpwifi_private *priv, u8 band,
+ u32 pri_chan, u8 chan_bw)
+{
+ u8 center_freq_idx = 0;
+
+ if (band & BAND_AAC) {
+ switch (pri_chan) {
+ case 36:
+ case 40:
+ case 44:
+ case 48:
+ if (chan_bw == IEEE80211_VHT_CHANWIDTH_80MHZ)
+ center_freq_idx = 42;
+ break;
+ case 52:
+ case 56:
+ case 60:
+ case 64:
+ if (chan_bw == IEEE80211_VHT_CHANWIDTH_80MHZ)
+ center_freq_idx = 58;
+ else if (chan_bw == IEEE80211_VHT_CHANWIDTH_160MHZ)
+ center_freq_idx = 50;
+ break;
+ case 100:
+ case 104:
+ case 108:
+ case 112:
+ if (chan_bw == IEEE80211_VHT_CHANWIDTH_80MHZ)
+ center_freq_idx = 106;
+ break;
+ case 116:
+ case 120:
+ case 124:
+ case 128:
+ if (chan_bw == IEEE80211_VHT_CHANWIDTH_80MHZ)
+ center_freq_idx = 122;
+ else if (chan_bw == IEEE80211_VHT_CHANWIDTH_160MHZ)
+ center_freq_idx = 114;
+ break;
+ case 132:
+ case 136:
+ case 140:
+ case 144:
+ if (chan_bw == IEEE80211_VHT_CHANWIDTH_80MHZ)
+ center_freq_idx = 138;
+ break;
+ case 149:
+ case 153:
+ case 157:
+ case 161:
+ if (chan_bw == IEEE80211_VHT_CHANWIDTH_80MHZ)
+ center_freq_idx = 155;
+ break;
+ default:
+ center_freq_idx = 42;
+ }
+ }
+
+ return center_freq_idx;
+}
--
2.34.1
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