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From:   viktor.barna@celeno.com
To:     linux-wireless@vger.kernel.org
Cc:     Kalle Valo <kvalo@codeaurora.org>,
        "David S . Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        Aviad Brikman <aviad.brikman@celeno.com>,
        Eliav Farber <eliav.farber@gmail.com>,
        Oleksandr Savchenko <oleksandr.savchenko@celeno.com>,
        Shay Bar <shay.bar@celeno.com>,
        Viktor Barna <viktor.barna@celeno.com>
Subject: [RFC v1 241/256] cl8k: add wrs/wrs_ap.c
Date:   Thu, 17 Jun 2021 16:02:08 +0000
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From: Viktor Barna <viktor.barna@celeno.com>

(Part of the split. Please, take a look at the cover letter for more
details).

Signed-off-by: Viktor Barna <viktor.barna@celeno.com>
---
 drivers/net/wireless/celeno/cl8k/wrs/wrs_ap.c | 99 +++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 drivers/net/wireless/celeno/cl8k/wrs/wrs_ap.c

diff --git a/drivers/net/wireless/celeno/cl8k/wrs/wrs_ap.c b/drivers/net/wi=
reless/celeno/cl8k/wrs/wrs_ap.c
new file mode 100644
index 000000000000..8ac8f7f8c644
--- /dev/null
+++ b/drivers/net/wireless/celeno/cl8k/wrs/wrs_ap.c
@@ -0,0 +1,99 @@
+// SPDX-License-Identifier: MIT
+/* Copyright(c) 2019-2021, Celeno Communications Ltd. */
+
+#include "wrs/wrs_ap.h"
+
+static void cl_wrs_ap_set_bitmap(struct cl_hw *cl_hw, struct cl_wrs_db *wr=
s_db)
+{
+       u8 mcs, bw, nss, rate_idx;
+
+       memset(wrs_db->ap_supported_rates, 0, sizeof(wrs_db->ap_supported_r=
ates));
+
+       for (bw =3D cl_hw->conf->ci_wrs_min_bw; bw <=3D wrs_db->max_cap.bw;=
 bw++)
+               for (nss =3D 0; nss <=3D wrs_db->max_cap.nss; nss++)
+                       for (mcs =3D 0; mcs <=3D wrs_db->max_cap.mcs; mcs++=
) {
+                               rate_idx =3D mcs + (nss * WRS_MCS_MAX);
+                               wrs_db->ap_supported_rates[bw] |=3D BIT(rat=
e_idx);
+                       }
+}
+
+static void cl_wrs_ap_capab_print(struct cl_hw *cl_hw)
+{
+       struct cl_wrs_db *wrs_db =3D &cl_hw->wrs_db;
+       struct cl_wrs_rate *max_cap =3D &wrs_db->max_cap;
+       u8 bw_mhz =3D BW_TO_MHZ(max_cap->bw);
+
+       pr_debug("\n");
+       pr_debug("AP max capabilities\n");
+       pr_debug("-------------------\n");
+       pr_debug("Band : %ug\n", cl_hw->conf->ci_band_num);
+       pr_debug("Mode : %s\n", WRS_MODE_STR(wrs_db->mode));
+       pr_debug("BW   : %uMHz\n", bw_mhz);
+       pr_debug("NSS  : %u\n", max_cap->nss);
+       pr_debug("MCS  : %u\n", max_cap->mcs);
+       pr_debug("GI   : %u\n", max_cap->gi);
+}
+
+void cl_wrs_ap_capab_set(struct cl_hw *cl_hw)
+{
+       struct cl_wrs_db *wrs_db =3D &cl_hw->wrs_db;
+       struct cl_wrs_rate *max_cap =3D &wrs_db->max_cap;
+       u8 conf_bw =3D cl_hw->conf->ce_channel_bandwidth;
+       u8 conf_nss =3D cl_hw->conf->ce_tx_nss - 1;
+       u8 conf_gi =3D cl_hw->conf->ha_short_guard_interval;
+
+       switch (cl_hw->conf->ce_wireless_mode) {
+       case WIRELESS_MODE_HE:
+       case WIRELESS_MODE_HT_VHT_HE:
+               wrs_db->mode =3D WRS_MODE_HE;
+               max_cap->bw =3D conf_bw;
+               max_cap->nss =3D conf_nss;
+               max_cap->mcs =3D WRS_MCS_11;
+               max_cap->gi =3D conf_gi ? WRS_GI_VSHORT : 0;
+               break;
+       case WIRELESS_MODE_HT_VHT:
+               wrs_db->mode =3D WRS_MODE_VHT;
+               max_cap->bw =3D conf_bw;
+               max_cap->nss =3D conf_nss;
+               max_cap->mcs =3D WRS_MCS_9;
+               max_cap->gi =3D conf_gi ? WRS_GI_SHORT : 0;
+               break;
+       case WIRELESS_MODE_HT:
+               wrs_db->mode =3D WRS_MODE_HT;
+               max_cap->bw =3D min_t(u8, conf_bw, CHNL_BW_80);
+               max_cap->nss =3D conf_nss;
+               max_cap->mcs =3D WRS_MCS_7;
+               max_cap->gi =3D conf_gi ? WRS_GI_SHORT : 0;
+               break;
+       case WIRELESS_MODE_LEGACY:
+       default:
+               if (cl_hw->conf->ha_hw_mode =3D=3D HW_MODE_B) {
+                       wrs_db->mode =3D WRS_MODE_CCK;
+                       max_cap->mcs =3D WRS_MCS_3;
+               } else {
+                       wrs_db->mode =3D WRS_MODE_OFDM;
+                       max_cap->mcs =3D WRS_MCS_7;
+               }
+
+               max_cap->bw =3D CHNL_BW_20;
+               max_cap->nss =3D 0;
+               max_cap->gi =3D 0;
+               break;
+       }
+
+       if (cl_hw->conf->ci_wrs_max_bw < max_cap->bw) {
+               max_cap->bw =3D cl_hw->conf->ci_wrs_max_bw;
+               pr_debug("[WRS] Max BW limited to %uMHz\n", BW_TO_MHZ(max_c=
ap->bw));
+       }
+
+       cl_wrs_ap_set_bitmap(cl_hw, wrs_db);
+
+       cl_wrs_ap_capab_print(cl_hw);
+}
+
+void cl_wrs_ap_capab_modify_bw(struct cl_hw *cl_hw, struct cl_wrs_db *wrs_=
db, u8 max_bw)
+{
+       wrs_db->max_cap.bw =3D max_bw;
+
+       cl_wrs_ap_set_bitmap(cl_hw, wrs_db);
+}
--
2.30.0

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