diff options
Diffstat (limited to 'drivers/staging/wfx/hif_tx.c')
-rw-r--r-- | drivers/staging/wfx/hif_tx.c | 513 |
1 files changed, 0 insertions, 513 deletions
diff --git a/drivers/staging/wfx/hif_tx.c b/drivers/staging/wfx/hif_tx.c deleted file mode 100644 index 2fd8bbd36e25..000000000000 --- a/drivers/staging/wfx/hif_tx.c +++ /dev/null @@ -1,513 +0,0 @@ -// 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 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 hif_msg **hif) -{ - *hif = kzalloc(sizeof(struct hif_msg) + body_len, GFP_KERNEL); - if (*hif) - return (*hif)->body; - else - return NULL; -} - -int wfx_cmd_send(struct wfx_dev *wdev, struct 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. Give enough time to the wq to send the - * buffer. - */ - msleep(100); - wdev->hif_cmd.buf_send = NULL; - mutex_unlock(&wdev->hif_cmd.lock); - return 0; - } - - 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; - } - - 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 = 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", - 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", - 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 hif_shutdown(struct wfx_dev *wdev) -{ - int ret; - struct 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 - control_reg_write(wdev, 0); - kfree(hif); - return ret; -} - -int hif_configuration(struct wfx_dev *wdev, const u8 *conf, size_t len) -{ - int ret; - size_t buf_len = sizeof(struct hif_req_configuration) + len; - struct hif_msg *hif; - struct 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 hif_reset(struct wfx_vif *wvif, bool reset_stat) -{ - int ret; - struct hif_msg *hif; - struct 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 hif_read_mib(struct wfx_dev *wdev, int vif_id, u16 mib_id, - void *val, size_t val_len) -{ - int ret; - struct hif_msg *hif; - int buf_len = sizeof(struct hif_cnf_read_mib) + val_len; - struct hif_req_read_mib *body = wfx_alloc_hif(sizeof(*body), &hif); - struct 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", - 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 hif_write_mib(struct wfx_dev *wdev, int vif_id, u16 mib_id, - void *val, size_t val_len) -{ - int ret; - struct hif_msg *hif; - int buf_len = sizeof(struct hif_req_write_mib) + val_len; - struct 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 hif_scan(struct wfx_vif *wvif, struct cfg80211_scan_request *req, - int chan_start_idx, int chan_num) -{ - int ret, i; - struct hif_msg *hif; - size_t buf_len = - sizeof(struct hif_req_start_scan_alt) + chan_num * sizeof(u8); - struct 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 hif_stop_scan(struct wfx_vif *wvif) -{ - int ret; - struct 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 hif_join(struct wfx_vif *wvif, const struct ieee80211_bss_conf *conf, - struct ieee80211_channel *channel, const u8 *ssid, int ssidlen) -{ - int ret; - struct hif_msg *hif; - struct 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) < ssidlen); - WARN(!conf->ibss_joined && !ssidlen, "joining an unknown BSS"); - if (!hif) - return -ENOMEM; - body->infrastructure_bss_mode = !conf->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(ssidlen); - memcpy(body->ssid, ssid, ssidlen); - } - 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 hif_set_bss_params(struct wfx_vif *wvif, int aid, int beacon_lost_count) -{ - int ret; - struct hif_msg *hif; - struct 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 hif_add_key(struct wfx_dev *wdev, const struct hif_req_add_key *arg) -{ - int ret; - struct hif_msg *hif; - /* FIXME: only send necessary bits */ - struct 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 hif_remove_key(struct wfx_dev *wdev, int idx) -{ - int ret; - struct hif_msg *hif; - struct 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 hif_set_edca_queue_params(struct wfx_vif *wvif, u16 queue, - const struct ieee80211_tx_queue_params *arg) -{ - int ret; - struct hif_msg *hif; - struct 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 hif_set_pm(struct wfx_vif *wvif, bool ps, int dynamic_ps_timeout) -{ - int ret; - struct hif_msg *hif; - struct 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 hif_start(struct wfx_vif *wvif, const struct ieee80211_bss_conf *conf, - const struct ieee80211_channel *channel) -{ - int ret; - struct hif_msg *hif; - struct 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 = conf->ssid_len; - memcpy(body->ssid, conf->ssid, conf->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 hif_beacon_transmit(struct wfx_vif *wvif, bool enable) -{ - int ret; - struct hif_msg *hif; - struct 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 hif_map_link(struct wfx_vif *wvif, bool unmap, u8 *mac_addr, int sta_id, bool mfp) -{ - int ret; - struct hif_msg *hif; - struct 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 hif_update_ie_beacon(struct wfx_vif *wvif, const u8 *ies, size_t ies_len) -{ - int ret; - struct hif_msg *hif; - int buf_len = sizeof(struct hif_req_update_ie) + ies_len; - struct 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; -} |