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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/net/wireless/silabs/wfx/hif_tx.c | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/wireless/silabs/wfx/hif_tx.c')
-rw-r--r-- | drivers/net/wireless/silabs/wfx/hif_tx.c | 494 |
1 files changed, 494 insertions, 0 deletions
diff --git a/drivers/net/wireless/silabs/wfx/hif_tx.c b/drivers/net/wireless/silabs/wfx/hif_tx.c new file mode 100644 index 0000000000..9402503fbd --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/hif_tx.c @@ -0,0 +1,494 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Implementation of the host-to-chip commands (aka request/confirmation) of the + * hardware API. + * + * Copyright (c) 2017-2020, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + */ +#include <linux/etherdevice.h> + +#include "hif_tx.h" +#include "wfx.h" +#include "bh.h" +#include "hwio.h" +#include "debug.h" +#include "sta.h" + +void wfx_init_hif_cmd(struct wfx_hif_cmd *hif_cmd) +{ + init_completion(&hif_cmd->ready); + init_completion(&hif_cmd->done); + mutex_init(&hif_cmd->lock); +} + +static void wfx_fill_header(struct wfx_hif_msg *hif, int if_id, unsigned int cmd, size_t size) +{ + if (if_id == -1) + if_id = 2; + + WARN(cmd > 0x3f, "invalid hardware command %#.2x", cmd); + WARN(size > 0xFFF, "requested buffer is too large: %zu bytes", size); + WARN(if_id > 0x3, "invalid interface ID %d", if_id); + + hif->len = cpu_to_le16(size + 4); + hif->id = cmd; + hif->interface = if_id; +} + +static void *wfx_alloc_hif(size_t body_len, struct wfx_hif_msg **hif) +{ + *hif = kzalloc(sizeof(struct wfx_hif_msg) + body_len, GFP_KERNEL); + if (*hif) + return (*hif)->body; + else + return NULL; +} + +int wfx_cmd_send(struct wfx_dev *wdev, struct wfx_hif_msg *request, + void *reply, size_t reply_len, bool no_reply) +{ + const char *mib_name = ""; + const char *mib_sep = ""; + int cmd = request->id; + int vif = request->interface; + int ret; + + /* Do not wait for any reply if chip is frozen */ + if (wdev->chip_frozen) + return -ETIMEDOUT; + + mutex_lock(&wdev->hif_cmd.lock); + WARN(wdev->hif_cmd.buf_send, "data locking error"); + + /* Note: call to complete() below has an implicit memory barrier that hopefully protect + * buf_send + */ + wdev->hif_cmd.buf_send = request; + wdev->hif_cmd.buf_recv = reply; + wdev->hif_cmd.len_recv = reply_len; + complete(&wdev->hif_cmd.ready); + + wfx_bh_request_tx(wdev); + + if (no_reply) { + /* Chip won't reply. Ensure the wq has send the buffer before to continue. */ + flush_workqueue(wdev->bh_wq); + ret = 0; + goto end; + } + + if (wdev->poll_irq) + wfx_bh_poll_irq(wdev); + + ret = wait_for_completion_timeout(&wdev->hif_cmd.done, 1 * HZ); + if (!ret) { + dev_err(wdev->dev, "chip is abnormally long to answer\n"); + reinit_completion(&wdev->hif_cmd.ready); + ret = wait_for_completion_timeout(&wdev->hif_cmd.done, 3 * HZ); + } + if (!ret) { + dev_err(wdev->dev, "chip did not answer\n"); + wfx_pending_dump_old_frames(wdev, 3000); + wdev->chip_frozen = true; + reinit_completion(&wdev->hif_cmd.done); + ret = -ETIMEDOUT; + } else { + ret = wdev->hif_cmd.ret; + } + +end: + wdev->hif_cmd.buf_send = NULL; + mutex_unlock(&wdev->hif_cmd.lock); + + if (ret && + (cmd == HIF_REQ_ID_READ_MIB || cmd == HIF_REQ_ID_WRITE_MIB)) { + mib_name = wfx_get_mib_name(((u16 *)request)[2]); + mib_sep = "/"; + } + if (ret < 0) + dev_err(wdev->dev, "hardware request %s%s%s (%#.2x) on vif %d returned error %d\n", + wfx_get_hif_name(cmd), mib_sep, mib_name, cmd, vif, ret); + if (ret > 0) + dev_warn(wdev->dev, "hardware request %s%s%s (%#.2x) on vif %d returned status %d\n", + wfx_get_hif_name(cmd), mib_sep, mib_name, cmd, vif, ret); + + return ret; +} + +/* This function is special. After HIF_REQ_ID_SHUT_DOWN, chip won't reply to any request anymore. + * Obviously, only call this function during device unregister. + */ +int wfx_hif_shutdown(struct wfx_dev *wdev) +{ + int ret; + struct wfx_hif_msg *hif; + + wfx_alloc_hif(0, &hif); + if (!hif) + return -ENOMEM; + wfx_fill_header(hif, -1, HIF_REQ_ID_SHUT_DOWN, 0); + ret = wfx_cmd_send(wdev, hif, NULL, 0, true); + if (wdev->pdata.gpio_wakeup) + gpiod_set_value(wdev->pdata.gpio_wakeup, 0); + else + wfx_control_reg_write(wdev, 0); + kfree(hif); + return ret; +} + +int wfx_hif_configuration(struct wfx_dev *wdev, const u8 *conf, size_t len) +{ + int ret; + size_t buf_len = sizeof(struct wfx_hif_req_configuration) + len; + struct wfx_hif_msg *hif; + struct wfx_hif_req_configuration *body = wfx_alloc_hif(buf_len, &hif); + + if (!hif) + return -ENOMEM; + body->length = cpu_to_le16(len); + memcpy(body->pds_data, conf, len); + wfx_fill_header(hif, -1, HIF_REQ_ID_CONFIGURATION, buf_len); + ret = wfx_cmd_send(wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int wfx_hif_reset(struct wfx_vif *wvif, bool reset_stat) +{ + int ret; + struct wfx_hif_msg *hif; + struct wfx_hif_req_reset *body = wfx_alloc_hif(sizeof(*body), &hif); + + if (!hif) + return -ENOMEM; + body->reset_stat = reset_stat; + wfx_fill_header(hif, wvif->id, HIF_REQ_ID_RESET, sizeof(*body)); + ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int wfx_hif_read_mib(struct wfx_dev *wdev, int vif_id, u16 mib_id, void *val, size_t val_len) +{ + int ret; + struct wfx_hif_msg *hif; + int buf_len = sizeof(struct wfx_hif_cnf_read_mib) + val_len; + struct wfx_hif_req_read_mib *body = wfx_alloc_hif(sizeof(*body), &hif); + struct wfx_hif_cnf_read_mib *reply = kmalloc(buf_len, GFP_KERNEL); + + if (!body || !reply) { + ret = -ENOMEM; + goto out; + } + body->mib_id = cpu_to_le16(mib_id); + wfx_fill_header(hif, vif_id, HIF_REQ_ID_READ_MIB, sizeof(*body)); + ret = wfx_cmd_send(wdev, hif, reply, buf_len, false); + + if (!ret && mib_id != le16_to_cpu(reply->mib_id)) { + dev_warn(wdev->dev, "%s: confirmation mismatch request\n", __func__); + ret = -EIO; + } + if (ret == -ENOMEM) + dev_err(wdev->dev, "buffer is too small to receive %s (%zu < %d)\n", + wfx_get_mib_name(mib_id), val_len, le16_to_cpu(reply->length)); + if (!ret) + memcpy(val, &reply->mib_data, le16_to_cpu(reply->length)); + else + memset(val, 0xFF, val_len); +out: + kfree(hif); + kfree(reply); + return ret; +} + +int wfx_hif_write_mib(struct wfx_dev *wdev, int vif_id, u16 mib_id, void *val, size_t val_len) +{ + int ret; + struct wfx_hif_msg *hif; + int buf_len = sizeof(struct wfx_hif_req_write_mib) + val_len; + struct wfx_hif_req_write_mib *body = wfx_alloc_hif(buf_len, &hif); + + if (!hif) + return -ENOMEM; + body->mib_id = cpu_to_le16(mib_id); + body->length = cpu_to_le16(val_len); + memcpy(&body->mib_data, val, val_len); + wfx_fill_header(hif, vif_id, HIF_REQ_ID_WRITE_MIB, buf_len); + ret = wfx_cmd_send(wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int wfx_hif_scan(struct wfx_vif *wvif, struct cfg80211_scan_request *req, + int chan_start_idx, int chan_num) +{ + int ret, i; + struct wfx_hif_msg *hif; + size_t buf_len = sizeof(struct wfx_hif_req_start_scan_alt) + chan_num * sizeof(u8); + struct wfx_hif_req_start_scan_alt *body = wfx_alloc_hif(buf_len, &hif); + + WARN(chan_num > HIF_API_MAX_NB_CHANNELS, "invalid params"); + WARN(req->n_ssids > HIF_API_MAX_NB_SSIDS, "invalid params"); + + if (!hif) + return -ENOMEM; + for (i = 0; i < req->n_ssids; i++) { + memcpy(body->ssid_def[i].ssid, req->ssids[i].ssid, IEEE80211_MAX_SSID_LEN); + body->ssid_def[i].ssid_length = cpu_to_le32(req->ssids[i].ssid_len); + } + body->num_of_ssids = HIF_API_MAX_NB_SSIDS; + body->maintain_current_bss = 1; + body->disallow_ps = 1; + body->tx_power_level = cpu_to_le32(req->channels[chan_start_idx]->max_power); + body->num_of_channels = chan_num; + for (i = 0; i < chan_num; i++) + body->channel_list[i] = req->channels[i + chan_start_idx]->hw_value; + if (req->no_cck) + body->max_transmit_rate = API_RATE_INDEX_G_6MBPS; + else + body->max_transmit_rate = API_RATE_INDEX_B_1MBPS; + if (req->channels[chan_start_idx]->flags & IEEE80211_CHAN_NO_IR) { + body->min_channel_time = cpu_to_le32(50); + body->max_channel_time = cpu_to_le32(150); + } else { + body->min_channel_time = cpu_to_le32(10); + body->max_channel_time = cpu_to_le32(50); + body->num_of_probe_requests = 2; + body->probe_delay = 100; + } + + wfx_fill_header(hif, wvif->id, HIF_REQ_ID_START_SCAN, buf_len); + ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int wfx_hif_stop_scan(struct wfx_vif *wvif) +{ + int ret; + struct wfx_hif_msg *hif; + /* body associated to HIF_REQ_ID_STOP_SCAN is empty */ + wfx_alloc_hif(0, &hif); + + if (!hif) + return -ENOMEM; + wfx_fill_header(hif, wvif->id, HIF_REQ_ID_STOP_SCAN, 0); + ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int wfx_hif_join(struct wfx_vif *wvif, const struct ieee80211_bss_conf *conf, + struct ieee80211_channel *channel, const u8 *ssid, int ssid_len) +{ + struct ieee80211_vif *vif = container_of(conf, struct ieee80211_vif, + bss_conf); + int ret; + struct wfx_hif_msg *hif; + struct wfx_hif_req_join *body = wfx_alloc_hif(sizeof(*body), &hif); + + WARN_ON(!conf->beacon_int); + WARN_ON(!conf->basic_rates); + WARN_ON(sizeof(body->ssid) < ssid_len); + WARN(!vif->cfg.ibss_joined && !ssid_len, "joining an unknown BSS"); + if (!hif) + return -ENOMEM; + body->infrastructure_bss_mode = !vif->cfg.ibss_joined; + body->short_preamble = conf->use_short_preamble; + body->probe_for_join = !(channel->flags & IEEE80211_CHAN_NO_IR); + body->channel_number = channel->hw_value; + body->beacon_interval = cpu_to_le32(conf->beacon_int); + body->basic_rate_set = cpu_to_le32(wfx_rate_mask_to_hw(wvif->wdev, conf->basic_rates)); + memcpy(body->bssid, conf->bssid, sizeof(body->bssid)); + if (ssid) { + body->ssid_length = cpu_to_le32(ssid_len); + memcpy(body->ssid, ssid, ssid_len); + } + wfx_fill_header(hif, wvif->id, HIF_REQ_ID_JOIN, sizeof(*body)); + ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int wfx_hif_set_bss_params(struct wfx_vif *wvif, int aid, int beacon_lost_count) +{ + int ret; + struct wfx_hif_msg *hif; + struct wfx_hif_req_set_bss_params *body = wfx_alloc_hif(sizeof(*body), &hif); + + if (!hif) + return -ENOMEM; + body->aid = cpu_to_le16(aid); + body->beacon_lost_count = beacon_lost_count; + wfx_fill_header(hif, wvif->id, HIF_REQ_ID_SET_BSS_PARAMS, sizeof(*body)); + ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int wfx_hif_add_key(struct wfx_dev *wdev, const struct wfx_hif_req_add_key *arg) +{ + int ret; + struct wfx_hif_msg *hif; + /* FIXME: only send necessary bits */ + struct wfx_hif_req_add_key *body = wfx_alloc_hif(sizeof(*body), &hif); + + if (!hif) + return -ENOMEM; + /* FIXME: swap bytes as necessary in body */ + memcpy(body, arg, sizeof(*body)); + if (wfx_api_older_than(wdev, 1, 5)) + /* Legacy firmwares expect that add_key to be sent on right interface. */ + wfx_fill_header(hif, arg->int_id, HIF_REQ_ID_ADD_KEY, sizeof(*body)); + else + wfx_fill_header(hif, -1, HIF_REQ_ID_ADD_KEY, sizeof(*body)); + ret = wfx_cmd_send(wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int wfx_hif_remove_key(struct wfx_dev *wdev, int idx) +{ + int ret; + struct wfx_hif_msg *hif; + struct wfx_hif_req_remove_key *body = wfx_alloc_hif(sizeof(*body), &hif); + + if (!hif) + return -ENOMEM; + body->entry_index = idx; + wfx_fill_header(hif, -1, HIF_REQ_ID_REMOVE_KEY, sizeof(*body)); + ret = wfx_cmd_send(wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int wfx_hif_set_edca_queue_params(struct wfx_vif *wvif, u16 queue, + const struct ieee80211_tx_queue_params *arg) +{ + int ret; + struct wfx_hif_msg *hif; + struct wfx_hif_req_edca_queue_params *body = wfx_alloc_hif(sizeof(*body), &hif); + + if (!body) + return -ENOMEM; + + WARN_ON(arg->aifs > 255); + if (!hif) + return -ENOMEM; + body->aifsn = arg->aifs; + body->cw_min = cpu_to_le16(arg->cw_min); + body->cw_max = cpu_to_le16(arg->cw_max); + body->tx_op_limit = cpu_to_le16(arg->txop * USEC_PER_TXOP); + body->queue_id = 3 - queue; + /* API 2.0 has changed queue IDs values */ + if (wfx_api_older_than(wvif->wdev, 2, 0) && queue == IEEE80211_AC_BE) + body->queue_id = HIF_QUEUE_ID_BACKGROUND; + if (wfx_api_older_than(wvif->wdev, 2, 0) && queue == IEEE80211_AC_BK) + body->queue_id = HIF_QUEUE_ID_BESTEFFORT; + wfx_fill_header(hif, wvif->id, HIF_REQ_ID_EDCA_QUEUE_PARAMS, sizeof(*body)); + ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int wfx_hif_set_pm(struct wfx_vif *wvif, bool ps, int dynamic_ps_timeout) +{ + int ret; + struct wfx_hif_msg *hif; + struct wfx_hif_req_set_pm_mode *body = wfx_alloc_hif(sizeof(*body), &hif); + + if (!body) + return -ENOMEM; + + if (!hif) + return -ENOMEM; + if (ps) { + body->enter_psm = 1; + /* Firmware does not support more than 128ms */ + body->fast_psm_idle_period = min(dynamic_ps_timeout * 2, 255); + if (body->fast_psm_idle_period) + body->fast_psm = 1; + } + wfx_fill_header(hif, wvif->id, HIF_REQ_ID_SET_PM_MODE, sizeof(*body)); + ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int wfx_hif_start(struct wfx_vif *wvif, const struct ieee80211_bss_conf *conf, + const struct ieee80211_channel *channel) +{ + struct ieee80211_vif *vif = container_of(conf, struct ieee80211_vif, + bss_conf); + int ret; + struct wfx_hif_msg *hif; + struct wfx_hif_req_start *body = wfx_alloc_hif(sizeof(*body), &hif); + + WARN_ON(!conf->beacon_int); + if (!hif) + return -ENOMEM; + body->dtim_period = conf->dtim_period; + body->short_preamble = conf->use_short_preamble; + body->channel_number = channel->hw_value; + body->beacon_interval = cpu_to_le32(conf->beacon_int); + body->basic_rate_set = cpu_to_le32(wfx_rate_mask_to_hw(wvif->wdev, conf->basic_rates)); + body->ssid_length = vif->cfg.ssid_len; + memcpy(body->ssid, vif->cfg.ssid, vif->cfg.ssid_len); + wfx_fill_header(hif, wvif->id, HIF_REQ_ID_START, sizeof(*body)); + ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int wfx_hif_beacon_transmit(struct wfx_vif *wvif, bool enable) +{ + int ret; + struct wfx_hif_msg *hif; + struct wfx_hif_req_beacon_transmit *body = wfx_alloc_hif(sizeof(*body), &hif); + + if (!hif) + return -ENOMEM; + body->enable_beaconing = enable ? 1 : 0; + wfx_fill_header(hif, wvif->id, HIF_REQ_ID_BEACON_TRANSMIT, sizeof(*body)); + ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int wfx_hif_map_link(struct wfx_vif *wvif, bool unmap, u8 *mac_addr, int sta_id, bool mfp) +{ + int ret; + struct wfx_hif_msg *hif; + struct wfx_hif_req_map_link *body = wfx_alloc_hif(sizeof(*body), &hif); + + if (!hif) + return -ENOMEM; + if (mac_addr) + ether_addr_copy(body->mac_addr, mac_addr); + body->mfpc = mfp ? 1 : 0; + body->unmap = unmap ? 1 : 0; + body->peer_sta_id = sta_id; + wfx_fill_header(hif, wvif->id, HIF_REQ_ID_MAP_LINK, sizeof(*body)); + ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} + +int wfx_hif_update_ie_beacon(struct wfx_vif *wvif, const u8 *ies, size_t ies_len) +{ + int ret; + struct wfx_hif_msg *hif; + int buf_len = sizeof(struct wfx_hif_req_update_ie) + ies_len; + struct wfx_hif_req_update_ie *body = wfx_alloc_hif(buf_len, &hif); + + if (!hif) + return -ENOMEM; + body->beacon = 1; + body->num_ies = cpu_to_le16(1); + memcpy(body->ie, ies, ies_len); + wfx_fill_header(hif, wvif->id, HIF_REQ_ID_UPDATE_IE, buf_len); + ret = wfx_cmd_send(wvif->wdev, hif, NULL, 0, false); + kfree(hif); + return ret; +} |