cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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rfi.c (4430B)

      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 */
     14static 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
     73int iwl_rfi_send_config_cmd(struct iwl_mvm *mvm, struct iwl_rfi_lut_entry *rfi_table)
     74{
     75	int ret;
     76	struct iwl_rfi_config_cmd cmd;
     77	struct iwl_host_cmd hcmd = {
     78		.id = WIDE_ID(SYSTEM_GROUP, RFI_CONFIG_CMD),
     79		.dataflags[0] = IWL_HCMD_DFL_DUP,
     80		.data[0] = &cmd,
     81		.len[0] = sizeof(cmd),
     82	};
     83
     84	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_RFIM_SUPPORT))
     85		return -EOPNOTSUPP;
     86
     87	lockdep_assert_held(&mvm->mutex);
     88
     89	/* in case no table is passed, use the default one */
     90	if (!rfi_table) {
     91		memcpy(cmd.table, iwl_rfi_table, sizeof(cmd.table));
     92	} else {
     93		memcpy(cmd.table, rfi_table, sizeof(cmd.table));
     94		/* notify FW the table is not the default one */
     95		cmd.oem = 1;
     96	}
     97
     98	ret = iwl_mvm_send_cmd(mvm, &hcmd);
     99
    100	if (ret)
    101		IWL_ERR(mvm, "Failed to send RFI config cmd %d\n", ret);
    102
    103	return ret;
    104}
    105
    106struct iwl_rfi_freq_table_resp_cmd *iwl_rfi_get_freq_table(struct iwl_mvm *mvm)
    107{
    108	struct iwl_rfi_freq_table_resp_cmd *resp;
    109	int resp_size = sizeof(*resp);
    110	int ret;
    111	struct iwl_host_cmd cmd = {
    112		.id = WIDE_ID(SYSTEM_GROUP, RFI_GET_FREQ_TABLE_CMD),
    113		.flags = CMD_WANT_SKB,
    114	};
    115
    116	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_RFIM_SUPPORT))
    117		return ERR_PTR(-EOPNOTSUPP);
    118
    119	mutex_lock(&mvm->mutex);
    120	ret = iwl_mvm_send_cmd(mvm, &cmd);
    121	mutex_unlock(&mvm->mutex);
    122	if (ret)
    123		return ERR_PTR(ret);
    124
    125	if (WARN_ON_ONCE(iwl_rx_packet_payload_len(cmd.resp_pkt) != resp_size))
    126		return ERR_PTR(-EIO);
    127
    128	resp = kmemdup(cmd.resp_pkt->data, resp_size, GFP_KERNEL);
    129	if (!resp)
    130		return ERR_PTR(-ENOMEM);
    131
    132	iwl_free_resp(&cmd);
    133	return resp;
    134}
    135
    136void iwl_rfi_deactivate_notif_handler(struct iwl_mvm *mvm,
    137				      struct iwl_rx_cmd_buffer *rxb)
    138{
    139	struct iwl_rx_packet *pkt = rxb_addr(rxb);
    140	struct iwl_rfi_deactivate_notif *notif = (void *)pkt->data;
    141
    142	IWL_INFO(mvm, "RFIm is deactivated, reason = %d\n", notif->reason);
    143}