1 files changed, 118 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rfi.c b/drivers/net/wireless/intel/iwlwifi/mvm/rfi.c
new file mode 100644
index 000000000000..873919048143
--- /dev/null
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rfi.c
@@ -0,0 +1,118 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/*
+ * Copyright (C) 2020 Intel Corporation
+ */
+
+#include "mvm.h"
+#include "fw/api/commands.h"
+#include "fw/api/phy-ctxt.h"
+
+/**
+ * DDR needs frequency in units of 16.666MHz, so provide FW with the
+ * frequency values in the adjusted format.
+ */
+const static struct iwl_rfi_lut_entry iwl_rfi_table[IWL_RFI_LUT_SIZE] = {
+	/* LPDDR4 */
+
+	/* frequency 3733MHz */
+	{cpu_to_le16(223), {114, 116, 118, 120, 122,},
+	      {PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5,}},
+
+	/* frequency 4267MHz */
+	{cpu_to_le16(256), {79, 83, 85, 87, 89, 91, 93,},
+	       {PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6,
+		PHY_BAND_6, PHY_BAND_6,}},
+
+	/* DDR5ePOR */
+
+	/* frequency 4000MHz */
+	{cpu_to_le16(240), {3, 5, 7, 9, 11, 13, 15,},
+	      {PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6,
+	       PHY_BAND_6, PHY_BAND_6,}},
+
+	/* frequency 4400MHz */
+	{cpu_to_le16(264), {111, 119, 123, 125, 129, 131, 133, 135, 143,},
+	      {PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6,
+	       PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6,}},
+
+	/* LPDDR5iPOR */
+
+	/* frequency 5200MHz */
+	{cpu_to_le16(312), {36, 38, 40, 42, 50,},
+	       {PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5,}},
+
+	/* frequency 6000MHz */
+	{cpu_to_le16(360), {3, 5, 7, 9, 11, 13, 15,},
+	       {PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6,
+		PHY_BAND_6, PHY_BAND_6,}},
+
+	/* frequency 6400MHz */
+	{cpu_to_le16(384), {79, 83, 85, 87, 89, 91, 93,},
+	       {PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6,
+		PHY_BAND_6, PHY_BAND_6,}},
+};
+
+int iwl_rfi_send_config_cmd(struct iwl_mvm *mvm, struct iwl_rfi_lut_entry *rfi_table)
+{
+	int ret;
+	struct iwl_rfi_config_cmd cmd;
+	struct iwl_host_cmd hcmd = {
+		.id = WIDE_ID(SYSTEM_GROUP, RFI_CONFIG_CMD),
+		.dataflags[0] = IWL_HCMD_DFL_DUP,
+		.data[0] = &cmd,
+		.len[0] = sizeof(cmd),
+	};
+
+	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_RFIM_SUPPORT))
+		return -EOPNOTSUPP;
+
+	/* in case no table is passed, use the default one */
+	if (!rfi_table) {
+		memcpy(cmd.table, iwl_rfi_table, sizeof(cmd.table));
+	} else {
+		memcpy(cmd.table, rfi_table, sizeof(cmd.table));
+		/* notify FW the table is not the default one */
+		cmd.oem = 1;
+	}
+
+	mutex_lock(&mvm->mutex);
+	ret = iwl_mvm_send_cmd(mvm, &hcmd);
+	mutex_unlock(&mvm->mutex);
+
+	if (ret)
+		IWL_ERR(mvm, "Failed to send RFI config cmd %d\n", ret);
+
+	return ret;
+}
+
+struct iwl_rfi_freq_table_resp_cmd *iwl_rfi_get_freq_table(struct iwl_mvm *mvm)
+{
+	struct iwl_rfi_freq_table_resp_cmd *resp;
+	int resp_size = sizeof(*resp);
+	int ret;
+	struct iwl_host_cmd cmd = {
+		.id = WIDE_ID(SYSTEM_GROUP, RFI_GET_FREQ_TABLE_CMD),
+		.flags = CMD_WANT_SKB,
+	};
+
+	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_RFIM_SUPPORT))
+		return ERR_PTR(-EOPNOTSUPP);
+
+	mutex_lock(&mvm->mutex);
+	ret = iwl_mvm_send_cmd(mvm, &cmd);
+	mutex_unlock(&mvm->mutex);
+	if (ret)
+		return ERR_PTR(ret);
+
+	if (WARN_ON_ONCE(iwl_rx_packet_payload_len(cmd.resp_pkt) != resp_size))
+		return ERR_PTR(-EIO);
+
+	resp = kzalloc(resp_size, GFP_KERNEL);
+	if (!resp)
+		return ERR_PTR(-ENOMEM);
+
+	memcpy(resp, cmd.resp_pkt->data, resp_size);
+
+	iwl_free_resp(&cmd);
+	return resp;
+}