From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- drivers/net/wireless/ath/ath11k/testmode.c | 502 +++++++++++++++++++++++++++++ 1 file changed, 502 insertions(+) create mode 100644 drivers/net/wireless/ath/ath11k/testmode.c (limited to 'drivers/net/wireless/ath/ath11k/testmode.c') diff --git a/drivers/net/wireless/ath/ath11k/testmode.c b/drivers/net/wireless/ath/ath11k/testmode.c new file mode 100644 index 0000000000..43bb23265d --- /dev/null +++ b/drivers/net/wireless/ath/ath11k/testmode.c @@ -0,0 +1,502 @@ +// SPDX-License-Identifier: BSD-3-Clause-Clear +/* + * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved. + * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#include "testmode.h" +#include +#include "debug.h" +#include "wmi.h" +#include "hw.h" +#include "core.h" +#include "testmode_i.h" + +#define ATH11K_FTM_SEGHDR_CURRENT_SEQ GENMASK(3, 0) +#define ATH11K_FTM_SEGHDR_TOTAL_SEGMENTS GENMASK(7, 4) + +static const struct nla_policy ath11k_tm_policy[ATH11K_TM_ATTR_MAX + 1] = { + [ATH11K_TM_ATTR_CMD] = { .type = NLA_U32 }, + [ATH11K_TM_ATTR_DATA] = { .type = NLA_BINARY, + .len = ATH11K_TM_DATA_MAX_LEN }, + [ATH11K_TM_ATTR_WMI_CMDID] = { .type = NLA_U32 }, + [ATH11K_TM_ATTR_VERSION_MAJOR] = { .type = NLA_U32 }, + [ATH11K_TM_ATTR_VERSION_MINOR] = { .type = NLA_U32 }, +}; + +static struct ath11k *ath11k_tm_get_ar(struct ath11k_base *ab) +{ + struct ath11k_pdev *pdev; + struct ath11k *ar = NULL; + int i; + + for (i = 0; i < ab->num_radios; i++) { + pdev = &ab->pdevs[i]; + ar = pdev->ar; + + if (ar && ar->state == ATH11K_STATE_FTM) + break; + } + + return ar; +} + +/* This function handles unsegmented events. Data in various events are aggregated + * in application layer, this event is unsegmented from host perspective. + */ +static void ath11k_tm_wmi_event_unsegmented(struct ath11k_base *ab, u32 cmd_id, + struct sk_buff *skb) +{ + struct sk_buff *nl_skb; + struct ath11k *ar; + + ath11k_dbg(ab, ATH11K_DBG_TESTMODE, + "event wmi cmd_id %d skb length %d\n", + cmd_id, skb->len); + ath11k_dbg_dump(ab, ATH11K_DBG_TESTMODE, NULL, "", skb->data, skb->len); + + ar = ath11k_tm_get_ar(ab); + if (!ar) { + ath11k_warn(ab, "testmode event not handled due to invalid pdev\n"); + return; + } + + spin_lock_bh(&ar->data_lock); + + nl_skb = cfg80211_testmode_alloc_event_skb(ar->hw->wiphy, + 2 * nla_total_size(sizeof(u32)) + + nla_total_size(skb->len), + GFP_ATOMIC); + if (!nl_skb) { + ath11k_warn(ab, + "failed to allocate skb for unsegmented testmode wmi event\n"); + goto out; + } + + if (nla_put_u32(nl_skb, ATH11K_TM_ATTR_CMD, ATH11K_TM_CMD_WMI) || + nla_put_u32(nl_skb, ATH11K_TM_ATTR_WMI_CMDID, cmd_id) || + nla_put(nl_skb, ATH11K_TM_ATTR_DATA, skb->len, skb->data)) { + ath11k_warn(ab, "failed to populate testmode unsegmented event\n"); + kfree_skb(nl_skb); + goto out; + } + + cfg80211_testmode_event(nl_skb, GFP_ATOMIC); + spin_unlock_bh(&ar->data_lock); + return; + +out: + spin_unlock_bh(&ar->data_lock); + ath11k_warn(ab, "Failed to send testmode event to higher layers\n"); +} + +/* This function handles segmented events. Data of various events received + * from firmware is aggregated and sent to application layer + */ +static int ath11k_tm_process_event(struct ath11k_base *ab, u32 cmd_id, + const struct wmi_ftm_event_msg *ftm_msg, + u16 length) +{ + struct sk_buff *nl_skb; + int ret = 0; + struct ath11k *ar; + u8 const *buf_pos; + u16 datalen; + u8 total_segments, current_seq; + u32 data_pos; + u32 pdev_id; + + ath11k_dbg(ab, ATH11K_DBG_TESTMODE, + "event wmi cmd_id %d ftm event msg %pK datalen %d\n", + cmd_id, ftm_msg, length); + ath11k_dbg_dump(ab, ATH11K_DBG_TESTMODE, NULL, "", ftm_msg, length); + pdev_id = DP_HW2SW_MACID(ftm_msg->seg_hdr.pdev_id); + + if (pdev_id >= ab->num_radios) { + ath11k_warn(ab, "testmode event not handled due to invalid pdev id: %d\n", + pdev_id); + return -EINVAL; + } + + ar = ab->pdevs[pdev_id].ar; + if (!ar) { + ath11k_warn(ab, "testmode event not handled due to absence of pdev\n"); + return -ENODEV; + } + + current_seq = FIELD_GET(ATH11K_FTM_SEGHDR_CURRENT_SEQ, + ftm_msg->seg_hdr.segmentinfo); + total_segments = FIELD_GET(ATH11K_FTM_SEGHDR_TOTAL_SEGMENTS, + ftm_msg->seg_hdr.segmentinfo); + datalen = length - (sizeof(struct wmi_ftm_seg_hdr)); + buf_pos = ftm_msg->data; + + spin_lock_bh(&ar->data_lock); + + if (current_seq == 0) { + ab->testmode.expected_seq = 0; + ab->testmode.data_pos = 0; + } + + data_pos = ab->testmode.data_pos; + + if ((data_pos + datalen) > ATH11K_FTM_EVENT_MAX_BUF_LENGTH) { + ath11k_warn(ab, "Invalid ftm event length at %d: %d\n", + data_pos, datalen); + ret = -EINVAL; + goto out; + } + + memcpy(&ab->testmode.eventdata[data_pos], buf_pos, datalen); + data_pos += datalen; + + if (++ab->testmode.expected_seq != total_segments) { + ab->testmode.data_pos = data_pos; + ath11k_dbg(ab, ATH11K_DBG_TESTMODE, + "partial data received current_seq %d total_seg %d\n", + current_seq, total_segments); + goto out; + } + + ath11k_dbg(ab, ATH11K_DBG_TESTMODE, + "total data length pos %d len %d\n", + data_pos, ftm_msg->seg_hdr.len); + nl_skb = cfg80211_testmode_alloc_event_skb(ar->hw->wiphy, + 2 * nla_total_size(sizeof(u32)) + + nla_total_size(data_pos), + GFP_ATOMIC); + if (!nl_skb) { + ath11k_warn(ab, + "failed to allocate skb for segmented testmode wmi event\n"); + ret = -ENOMEM; + goto out; + } + + if (nla_put_u32(nl_skb, ATH11K_TM_ATTR_CMD, + ATH11K_TM_CMD_WMI_FTM) || + nla_put_u32(nl_skb, ATH11K_TM_ATTR_WMI_CMDID, cmd_id) || + nla_put(nl_skb, ATH11K_TM_ATTR_DATA, data_pos, + &ab->testmode.eventdata[0])) { + ath11k_warn(ab, "failed to populate segmented testmode event"); + kfree_skb(nl_skb); + ret = -ENOBUFS; + goto out; + } + + cfg80211_testmode_event(nl_skb, GFP_ATOMIC); + +out: + spin_unlock_bh(&ar->data_lock); + return ret; +} + +static void ath11k_tm_wmi_event_segmented(struct ath11k_base *ab, u32 cmd_id, + struct sk_buff *skb) +{ + const void **tb; + const struct wmi_ftm_event_msg *ev; + u16 length; + int ret; + + tb = ath11k_wmi_tlv_parse_alloc(ab, skb->data, skb->len, GFP_ATOMIC); + if (IS_ERR(tb)) { + ret = PTR_ERR(tb); + ath11k_warn(ab, "failed to parse ftm event tlv: %d\n", ret); + return; + } + + ev = tb[WMI_TAG_ARRAY_BYTE]; + if (!ev) { + ath11k_warn(ab, "failed to fetch ftm msg\n"); + kfree(tb); + return; + } + + length = skb->len - TLV_HDR_SIZE; + ret = ath11k_tm_process_event(ab, cmd_id, ev, length); + if (ret) + ath11k_warn(ab, "Failed to process ftm event\n"); + + kfree(tb); +} + +void ath11k_tm_wmi_event(struct ath11k_base *ab, u32 cmd_id, struct sk_buff *skb) +{ + if (test_bit(ATH11K_FLAG_FTM_SEGMENTED, &ab->dev_flags)) + ath11k_tm_wmi_event_segmented(ab, cmd_id, skb); + else + ath11k_tm_wmi_event_unsegmented(ab, cmd_id, skb); +} + +static int ath11k_tm_cmd_get_version(struct ath11k *ar, struct nlattr *tb[]) +{ + struct sk_buff *skb; + int ret; + + ath11k_dbg(ar->ab, ATH11K_DBG_TESTMODE, + "cmd get version_major %d version_minor %d\n", + ATH11K_TESTMODE_VERSION_MAJOR, + ATH11K_TESTMODE_VERSION_MINOR); + + skb = cfg80211_testmode_alloc_reply_skb(ar->hw->wiphy, + nla_total_size(sizeof(u32))); + if (!skb) + return -ENOMEM; + + ret = nla_put_u32(skb, ATH11K_TM_ATTR_VERSION_MAJOR, + ATH11K_TESTMODE_VERSION_MAJOR); + if (ret) { + kfree_skb(skb); + return ret; + } + + ret = nla_put_u32(skb, ATH11K_TM_ATTR_VERSION_MINOR, + ATH11K_TESTMODE_VERSION_MINOR); + if (ret) { + kfree_skb(skb); + return ret; + } + + return cfg80211_testmode_reply(skb); +} + +static int ath11k_tm_cmd_testmode_start(struct ath11k *ar, struct nlattr *tb[]) +{ + int ret; + + mutex_lock(&ar->conf_mutex); + + if (ar->state == ATH11K_STATE_FTM) { + ret = -EALREADY; + goto err; + } + + /* start utf only when the driver is not in use */ + if (ar->state != ATH11K_STATE_OFF) { + ret = -EBUSY; + goto err; + } + + ar->ab->testmode.eventdata = kzalloc(ATH11K_FTM_EVENT_MAX_BUF_LENGTH, + GFP_KERNEL); + if (!ar->ab->testmode.eventdata) { + ret = -ENOMEM; + goto err; + } + + ar->state = ATH11K_STATE_FTM; + ar->ftm_msgref = 0; + + mutex_unlock(&ar->conf_mutex); + + ath11k_dbg(ar->ab, ATH11K_DBG_TESTMODE, "cmd start\n"); + return 0; + +err: + mutex_unlock(&ar->conf_mutex); + return ret; +} + +static int ath11k_tm_cmd_wmi(struct ath11k *ar, struct nlattr *tb[], + struct ieee80211_vif *vif) +{ + struct ath11k_pdev_wmi *wmi = ar->wmi; + struct sk_buff *skb; + struct ath11k_vif *arvif; + u32 cmd_id, buf_len; + int ret, tag; + void *buf; + u32 *ptr; + + mutex_lock(&ar->conf_mutex); + + if (!tb[ATH11K_TM_ATTR_DATA]) { + ret = -EINVAL; + goto out; + } + + if (!tb[ATH11K_TM_ATTR_WMI_CMDID]) { + ret = -EINVAL; + goto out; + } + + buf = nla_data(tb[ATH11K_TM_ATTR_DATA]); + buf_len = nla_len(tb[ATH11K_TM_ATTR_DATA]); + if (!buf_len) { + ath11k_warn(ar->ab, "No data present in testmode wmi command\n"); + ret = -EINVAL; + goto out; + } + + cmd_id = nla_get_u32(tb[ATH11K_TM_ATTR_WMI_CMDID]); + + /* Make sure that the buffer length is long enough to + * hold TLV and pdev/vdev id. + */ + if (buf_len < sizeof(struct wmi_tlv) + sizeof(u32)) { + ret = -EINVAL; + goto out; + } + + ptr = buf; + tag = FIELD_GET(WMI_TLV_TAG, *ptr); + + /* pdev/vdev id start after TLV header */ + ptr++; + + if (tag == WMI_TAG_PDEV_SET_PARAM_CMD) + *ptr = ar->pdev->pdev_id; + + if (ar->ab->fw_mode != ATH11K_FIRMWARE_MODE_FTM && + (tag == WMI_TAG_VDEV_SET_PARAM_CMD || tag == WMI_TAG_UNIT_TEST_CMD)) { + if (vif) { + arvif = ath11k_vif_to_arvif(vif); + *ptr = arvif->vdev_id; + } else { + ret = -EINVAL; + goto out; + } + } + + ath11k_dbg(ar->ab, ATH11K_DBG_TESTMODE, + "cmd wmi cmd_id %d buf length %d\n", + cmd_id, buf_len); + + ath11k_dbg_dump(ar->ab, ATH11K_DBG_TESTMODE, NULL, "", buf, buf_len); + + skb = ath11k_wmi_alloc_skb(wmi->wmi_ab, buf_len); + if (!skb) { + ret = -ENOMEM; + goto out; + } + + memcpy(skb->data, buf, buf_len); + + ret = ath11k_wmi_cmd_send(wmi, skb, cmd_id); + if (ret) { + dev_kfree_skb(skb); + ath11k_warn(ar->ab, "failed to transmit wmi command (testmode): %d\n", + ret); + goto out; + } + + ret = 0; + +out: + mutex_unlock(&ar->conf_mutex); + return ret; +} + +static int ath11k_tm_cmd_wmi_ftm(struct ath11k *ar, struct nlattr *tb[]) +{ + struct ath11k_pdev_wmi *wmi = ar->wmi; + struct ath11k_base *ab = ar->ab; + struct sk_buff *skb; + u32 cmd_id, buf_len, hdr_info; + int ret; + void *buf; + u8 segnumber = 0, seginfo; + u16 chunk_len, total_bytes, num_segments; + u8 *bufpos; + struct wmi_ftm_cmd *ftm_cmd; + + set_bit(ATH11K_FLAG_FTM_SEGMENTED, &ab->dev_flags); + + mutex_lock(&ar->conf_mutex); + + if (ar->state != ATH11K_STATE_FTM) { + ret = -ENETDOWN; + goto out; + } + + if (!tb[ATH11K_TM_ATTR_DATA]) { + ret = -EINVAL; + goto out; + } + + buf = nla_data(tb[ATH11K_TM_ATTR_DATA]); + buf_len = nla_len(tb[ATH11K_TM_ATTR_DATA]); + cmd_id = WMI_PDEV_UTF_CMDID; + + ath11k_dbg(ar->ab, ATH11K_DBG_TESTMODE, + "cmd wmi ftm cmd_id %d buffer length %d\n", + cmd_id, buf_len); + ath11k_dbg_dump(ar->ab, ATH11K_DBG_TESTMODE, NULL, "", buf, buf_len); + + bufpos = buf; + total_bytes = buf_len; + num_segments = total_bytes / MAX_WMI_UTF_LEN; + + if (buf_len - (num_segments * MAX_WMI_UTF_LEN)) + num_segments++; + + while (buf_len) { + chunk_len = min_t(u16, buf_len, MAX_WMI_UTF_LEN); + + skb = ath11k_wmi_alloc_skb(wmi->wmi_ab, (chunk_len + + sizeof(struct wmi_ftm_cmd))); + if (!skb) { + ret = -ENOMEM; + goto out; + } + + ftm_cmd = (struct wmi_ftm_cmd *)skb->data; + hdr_info = FIELD_PREP(WMI_TLV_TAG, WMI_TAG_ARRAY_BYTE) | + FIELD_PREP(WMI_TLV_LEN, (chunk_len + + sizeof(struct wmi_ftm_seg_hdr))); + ftm_cmd->tlv_header = hdr_info; + ftm_cmd->seg_hdr.len = total_bytes; + ftm_cmd->seg_hdr.msgref = ar->ftm_msgref; + seginfo = FIELD_PREP(ATH11K_FTM_SEGHDR_TOTAL_SEGMENTS, num_segments) | + FIELD_PREP(ATH11K_FTM_SEGHDR_CURRENT_SEQ, segnumber); + ftm_cmd->seg_hdr.segmentinfo = seginfo; + segnumber++; + + memcpy(&ftm_cmd->data, bufpos, chunk_len); + + ret = ath11k_wmi_cmd_send(wmi, skb, cmd_id); + if (ret) { + ath11k_warn(ar->ab, "failed to send wmi ftm command: %d\n", ret); + goto out; + } + + buf_len -= chunk_len; + bufpos += chunk_len; + } + + ar->ftm_msgref++; + ret = 0; + +out: + mutex_unlock(&ar->conf_mutex); + return ret; +} + +int ath11k_tm_cmd(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + void *data, int len) +{ + struct ath11k *ar = hw->priv; + struct nlattr *tb[ATH11K_TM_ATTR_MAX + 1]; + int ret; + + ret = nla_parse(tb, ATH11K_TM_ATTR_MAX, data, len, ath11k_tm_policy, + NULL); + if (ret) + return ret; + + if (!tb[ATH11K_TM_ATTR_CMD]) + return -EINVAL; + + switch (nla_get_u32(tb[ATH11K_TM_ATTR_CMD])) { + case ATH11K_TM_CMD_GET_VERSION: + return ath11k_tm_cmd_get_version(ar, tb); + case ATH11K_TM_CMD_WMI: + return ath11k_tm_cmd_wmi(ar, tb, vif); + case ATH11K_TM_CMD_TESTMODE_START: + return ath11k_tm_cmd_testmode_start(ar, tb); + case ATH11K_TM_CMD_WMI_FTM: + return ath11k_tm_cmd_wmi_ftm(ar, tb); + default: + return -EOPNOTSUPP; + } +} -- cgit v1.2.3