1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3  * Copyright (C) 2020 - 2021 Intel Corporation
4  */
5 
6 #include "mvm.h"
7 #include "fw/api/commands.h"
8 #include "fw/api/phy-ctxt.h"
9 
10 /**
11  * DDR needs frequency in units of 16.666MHz, so provide FW with the
12  * frequency values in the adjusted format.
13  */
14 static const struct iwl_rfi_lut_entry iwl_rfi_table[IWL_RFI_LUT_SIZE] = {
15 	/* LPDDR4 */
16 
17 	/* frequency 3733MHz */
18 	{cpu_to_le16(223), {114, 116, 118, 120, 122,},
19 	      {PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5,}},
20 
21 	/* frequency 4267MHz */
22 	{cpu_to_le16(256), {79, 83, 85, 87, 89, 91, 93,},
23 	       {PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6,
24 		PHY_BAND_6, PHY_BAND_6,}},
25 
26 	/* DDR5ePOR */
27 
28 	/* frequency 4000MHz */
29 	{cpu_to_le16(240), {3, 5, 7, 9, 11, 13, 15,},
30 	      {PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6,
31 	       PHY_BAND_6, PHY_BAND_6,}},
32 
33 	/* frequency 4400MHz */
34 	{cpu_to_le16(264), {111, 119, 123, 125, 129, 131, 133, 135, 143,},
35 	      {PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6,
36 	       PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6,}},
37 
38 	/* LPDDR5iPOR */
39 
40 	/* frequency 5200MHz */
41 	{cpu_to_le16(312), {36, 38, 40, 42, 50,},
42 	       {PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5,}},
43 
44 	/* frequency 6000MHz */
45 	{cpu_to_le16(360), {3, 5, 7, 9, 11, 13, 15,},
46 	       {PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6,
47 		PHY_BAND_6, PHY_BAND_6,}},
48 
49 	/* frequency 6400MHz */
50 	{cpu_to_le16(384), {79, 83, 85, 87, 89, 91, 93,},
51 	       {PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6,
52 		PHY_BAND_6, PHY_BAND_6,}},
53 };
54 
55 int iwl_rfi_send_config_cmd(struct iwl_mvm *mvm, struct iwl_rfi_lut_entry *rfi_table)
56 {
57 	int ret;
58 	struct iwl_rfi_config_cmd cmd;
59 	struct iwl_host_cmd hcmd = {
60 		.id = WIDE_ID(SYSTEM_GROUP, RFI_CONFIG_CMD),
61 		.dataflags[0] = IWL_HCMD_DFL_DUP,
62 		.data[0] = &cmd,
63 		.len[0] = sizeof(cmd),
64 	};
65 
66 	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_RFIM_SUPPORT))
67 		return -EOPNOTSUPP;
68 
69 	lockdep_assert_held(&mvm->mutex);
70 
71 	/* in case no table is passed, use the default one */
72 	if (!rfi_table) {
73 		memcpy(cmd.table, iwl_rfi_table, sizeof(cmd.table));
74 	} else {
75 		memcpy(cmd.table, rfi_table, sizeof(cmd.table));
76 		/* notify FW the table is not the default one */
77 		cmd.oem = 1;
78 	}
79 
80 	ret = iwl_mvm_send_cmd(mvm, &hcmd);
81 
82 	if (ret)
83 		IWL_ERR(mvm, "Failed to send RFI config cmd %d\n", ret);
84 
85 	return ret;
86 }
87 
88 struct iwl_rfi_freq_table_resp_cmd *iwl_rfi_get_freq_table(struct iwl_mvm *mvm)
89 {
90 	struct iwl_rfi_freq_table_resp_cmd *resp;
91 	int resp_size = sizeof(*resp);
92 	int ret;
93 	struct iwl_host_cmd cmd = {
94 		.id = WIDE_ID(SYSTEM_GROUP, RFI_GET_FREQ_TABLE_CMD),
95 		.flags = CMD_WANT_SKB,
96 	};
97 
98 	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_RFIM_SUPPORT))
99 		return ERR_PTR(-EOPNOTSUPP);
100 
101 	mutex_lock(&mvm->mutex);
102 	ret = iwl_mvm_send_cmd(mvm, &cmd);
103 	mutex_unlock(&mvm->mutex);
104 	if (ret)
105 		return ERR_PTR(ret);
106 
107 	if (WARN_ON_ONCE(iwl_rx_packet_payload_len(cmd.resp_pkt) != resp_size))
108 		return ERR_PTR(-EIO);
109 
110 	resp = kzalloc(resp_size, GFP_KERNEL);
111 	if (!resp)
112 		return ERR_PTR(-ENOMEM);
113 
114 	memcpy(resp, cmd.resp_pkt->data, resp_size);
115 
116 	iwl_free_resp(&cmd);
117 	return resp;
118 }
119