1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3  * Copyright (C) 2020 - 2022 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 	/* frequency 2667MHz */
16 	{cpu_to_le16(160), {50, 58, 60, 62, 64, 52, 54, 56},
17 	      {PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5,
18 	       PHY_BAND_5, PHY_BAND_5, PHY_BAND_5,}},
19 
20 	/* frequency 2933MHz */
21 	{cpu_to_le16(176), {149, 151, 153, 157, 159, 161, 165, 163, 167, 169,
22 			    171, 173, 175},
23 	      {PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5,
24 	       PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5,
25 	       PHY_BAND_5, PHY_BAND_5, PHY_BAND_5,}},
26 
27 	/* frequency 3200MHz */
28 	{cpu_to_le16(192), {79, 81, 83, 85, 87, 89, 91, 93},
29 	      {PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6,
30 	       PHY_BAND_6, PHY_BAND_6, PHY_BAND_6,}},
31 
32 	/* frequency 3733MHz */
33 	{cpu_to_le16(223), {114, 116, 118, 120, 122, 106, 110, 124, 126},
34 	      {PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5,
35 	       PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5,}},
36 
37 	/* frequency 4000MHz */
38 	{cpu_to_le16(240), {114, 151, 155, 157, 159, 161, 165},
39 	      {PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5,
40 	       PHY_BAND_5, PHY_BAND_5,}},
41 
42 	/* frequency 4267MHz */
43 	{cpu_to_le16(256), {79, 83, 85, 87, 89, 91, 93,},
44 	       {PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6,
45 		PHY_BAND_6, PHY_BAND_6,}},
46 
47 	/* frequency 4400MHz */
48 	{cpu_to_le16(264), {111, 119, 123, 125, 129, 131, 133, 135, 143,},
49 	      {PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6,
50 	       PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6,}},
51 
52 	/* frequency 5200MHz */
53 	{cpu_to_le16(312), {36, 38, 40, 42, 44, 46, 50,},
54 	       {PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5,
55 		PHY_BAND_5, PHY_BAND_5,}},
56 
57 	/* frequency 5600MHz */
58 	{cpu_to_le16(336), {106, 110, 112, 114, 116, 118, 120, 122},
59 	       {PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5, PHY_BAND_5,
60 		PHY_BAND_5, PHY_BAND_5, PHY_BAND_5,}},
61 
62 	/* frequency 6000MHz */
63 	{cpu_to_le16(360), {3, 5, 7, 9, 11, 13, 15,},
64 	       {PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6,
65 		PHY_BAND_6, PHY_BAND_6,}},
66 
67 	/* frequency 6400MHz */
68 	{cpu_to_le16(384), {79, 83, 85, 87, 89, 91, 93,},
69 	       {PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6, PHY_BAND_6,
70 		PHY_BAND_6, PHY_BAND_6,}},
71 };
72 
73 bool iwl_rfi_supported(struct iwl_mvm *mvm)
74 {
75 	/* The feature depends on a platform bugfix, so for now
76 	 * it's always disabled.
77 	 * When the platform support detection is implemented we should
78 	 * check FW TLV and platform support instead.
79 	 */
80 	return false;
81 }
82 
83 int iwl_rfi_send_config_cmd(struct iwl_mvm *mvm, struct iwl_rfi_lut_entry *rfi_table)
84 {
85 	int ret;
86 	struct iwl_rfi_config_cmd cmd;
87 	struct iwl_host_cmd hcmd = {
88 		.id = WIDE_ID(SYSTEM_GROUP, RFI_CONFIG_CMD),
89 		.dataflags[0] = IWL_HCMD_DFL_DUP,
90 		.data[0] = &cmd,
91 		.len[0] = sizeof(cmd),
92 	};
93 
94 	if (!iwl_rfi_supported(mvm))
95 		return -EOPNOTSUPP;
96 
97 	lockdep_assert_held(&mvm->mutex);
98 
99 	/* in case no table is passed, use the default one */
100 	if (!rfi_table) {
101 		memcpy(cmd.table, iwl_rfi_table, sizeof(cmd.table));
102 	} else {
103 		memcpy(cmd.table, rfi_table, sizeof(cmd.table));
104 		/* notify FW the table is not the default one */
105 		cmd.oem = 1;
106 	}
107 
108 	ret = iwl_mvm_send_cmd(mvm, &hcmd);
109 
110 	if (ret)
111 		IWL_ERR(mvm, "Failed to send RFI config cmd %d\n", ret);
112 
113 	return ret;
114 }
115 
116 struct iwl_rfi_freq_table_resp_cmd *iwl_rfi_get_freq_table(struct iwl_mvm *mvm)
117 {
118 	struct iwl_rfi_freq_table_resp_cmd *resp;
119 	int resp_size = sizeof(*resp);
120 	int ret;
121 	struct iwl_host_cmd cmd = {
122 		.id = WIDE_ID(SYSTEM_GROUP, RFI_GET_FREQ_TABLE_CMD),
123 		.flags = CMD_WANT_SKB,
124 	};
125 
126 	if (!iwl_rfi_supported(mvm))
127 		return ERR_PTR(-EOPNOTSUPP);
128 
129 	mutex_lock(&mvm->mutex);
130 	ret = iwl_mvm_send_cmd(mvm, &cmd);
131 	mutex_unlock(&mvm->mutex);
132 	if (ret)
133 		return ERR_PTR(ret);
134 
135 	if (WARN_ON_ONCE(iwl_rx_packet_payload_len(cmd.resp_pkt) != resp_size))
136 		return ERR_PTR(-EIO);
137 
138 	resp = kmemdup(cmd.resp_pkt->data, resp_size, GFP_KERNEL);
139 	if (!resp)
140 		return ERR_PTR(-ENOMEM);
141 
142 	iwl_free_resp(&cmd);
143 	return resp;
144 }
145 
146 void iwl_rfi_deactivate_notif_handler(struct iwl_mvm *mvm,
147 				      struct iwl_rx_cmd_buffer *rxb)
148 {
149 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
150 	struct iwl_rfi_deactivate_notif *notif = (void *)pkt->data;
151 
152 	IWL_INFO(mvm, "RFIm is deactivated, reason = %d\n", notif->reason);
153 }
154