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path: root/drivers/staging/wfx/hif_rx.c
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Diffstat (limited to 'drivers/staging/wfx/hif_rx.c')
-rw-r--r--drivers/staging/wfx/hif_rx.c416
1 files changed, 0 insertions, 416 deletions
diff --git a/drivers/staging/wfx/hif_rx.c b/drivers/staging/wfx/hif_rx.c
deleted file mode 100644
index 6963b54d5593..000000000000
--- a/drivers/staging/wfx/hif_rx.c
+++ /dev/null
@@ -1,416 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Handling of the chip-to-host events (aka indications) of the hardware API.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#include <linux/skbuff.h>
-#include <linux/etherdevice.h>
-
-#include "hif_rx.h"
-#include "wfx.h"
-#include "scan.h"
-#include "bh.h"
-#include "sta.h"
-#include "data_rx.h"
-#include "hif_api_cmd.h"
-
-static int hif_generic_confirm(struct wfx_dev *wdev,
- const struct hif_msg *hif, const void *buf)
-{
- /* All confirm messages start with status */
- int status = le32_to_cpup((__le32 *)buf);
- int cmd = hif->id;
- int len = le16_to_cpu(hif->len) - 4; /* drop header */
-
- WARN(!mutex_is_locked(&wdev->hif_cmd.lock), "data locking error");
-
- if (!wdev->hif_cmd.buf_send) {
- dev_warn(wdev->dev, "unexpected confirmation: 0x%.2x\n", cmd);
- return -EINVAL;
- }
-
- if (cmd != wdev->hif_cmd.buf_send->id) {
- dev_warn(wdev->dev,
- "chip response mismatch request: 0x%.2x vs 0x%.2x\n",
- cmd, wdev->hif_cmd.buf_send->id);
- return -EINVAL;
- }
-
- if (wdev->hif_cmd.buf_recv) {
- if (wdev->hif_cmd.len_recv >= len && len > 0)
- memcpy(wdev->hif_cmd.buf_recv, buf, len);
- else
- status = -EIO;
- }
- wdev->hif_cmd.ret = status;
-
- complete(&wdev->hif_cmd.done);
- return status;
-}
-
-static int hif_tx_confirm(struct wfx_dev *wdev,
- const struct hif_msg *hif, const void *buf)
-{
- const struct hif_cnf_tx *body = buf;
-
- wfx_tx_confirm_cb(wdev, body);
- return 0;
-}
-
-static int hif_multi_tx_confirm(struct wfx_dev *wdev,
- const struct hif_msg *hif, const void *buf)
-{
- const struct hif_cnf_multi_transmit *body = buf;
- int i;
-
- WARN(body->num_tx_confs <= 0, "corrupted message");
- for (i = 0; i < body->num_tx_confs; i++)
- wfx_tx_confirm_cb(wdev, &body->tx_conf_payload[i]);
- return 0;
-}
-
-static int hif_startup_indication(struct wfx_dev *wdev,
- const struct hif_msg *hif, const void *buf)
-{
- const struct hif_ind_startup *body = buf;
-
- if (body->status || body->firmware_type > 4) {
- dev_err(wdev->dev, "received invalid startup indication");
- return -EINVAL;
- }
- memcpy(&wdev->hw_caps, body, sizeof(struct hif_ind_startup));
- le16_to_cpus((__le16 *)&wdev->hw_caps.hardware_id);
- le16_to_cpus((__le16 *)&wdev->hw_caps.num_inp_ch_bufs);
- le16_to_cpus((__le16 *)&wdev->hw_caps.size_inp_ch_buf);
- le32_to_cpus((__le32 *)&wdev->hw_caps.supported_rate_mask);
-
- complete(&wdev->firmware_ready);
- return 0;
-}
-
-static int hif_wakeup_indication(struct wfx_dev *wdev,
- const struct hif_msg *hif, const void *buf)
-{
- if (!wdev->pdata.gpio_wakeup ||
- gpiod_get_value(wdev->pdata.gpio_wakeup) == 0) {
- dev_warn(wdev->dev, "unexpected wake-up indication\n");
- return -EIO;
- }
- return 0;
-}
-
-static int hif_receive_indication(struct wfx_dev *wdev,
- const struct hif_msg *hif,
- const void *buf, struct sk_buff *skb)
-{
- struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface);
- const struct hif_ind_rx *body = buf;
-
- if (!wvif) {
- dev_warn(wdev->dev, "%s: ignore rx data for non-existent vif %d\n",
- __func__, hif->interface);
- return -EIO;
- }
- skb_pull(skb, sizeof(struct hif_msg) + sizeof(struct hif_ind_rx));
- wfx_rx_cb(wvif, body, skb);
-
- return 0;
-}
-
-static int hif_event_indication(struct wfx_dev *wdev,
- const struct hif_msg *hif, const void *buf)
-{
- struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface);
- const struct hif_ind_event *body = buf;
- int type = le32_to_cpu(body->event_id);
-
- if (!wvif) {
- dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__);
- return -EIO;
- }
-
- switch (type) {
- case HIF_EVENT_IND_RCPI_RSSI:
- wfx_event_report_rssi(wvif, body->event_data.rcpi_rssi);
- break;
- case HIF_EVENT_IND_BSSLOST:
- schedule_delayed_work(&wvif->beacon_loss_work, 0);
- break;
- case HIF_EVENT_IND_BSSREGAINED:
- cancel_delayed_work(&wvif->beacon_loss_work);
- dev_dbg(wdev->dev, "ignore BSSREGAINED indication\n");
- break;
- case HIF_EVENT_IND_PS_MODE_ERROR:
- dev_warn(wdev->dev, "error while processing power save request: %d\n",
- le32_to_cpu(body->event_data.ps_mode_error));
- break;
- default:
- dev_warn(wdev->dev, "unhandled event indication: %.2x\n",
- type);
- break;
- }
- return 0;
-}
-
-static int hif_pm_mode_complete_indication(struct wfx_dev *wdev,
- const struct hif_msg *hif,
- const void *buf)
-{
- struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface);
-
- if (!wvif) {
- dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__);
- return -EIO;
- }
- complete(&wvif->set_pm_mode_complete);
-
- return 0;
-}
-
-static int hif_scan_complete_indication(struct wfx_dev *wdev,
- const struct hif_msg *hif,
- const void *buf)
-{
- struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface);
- const struct hif_ind_scan_cmpl *body = buf;
-
- if (!wvif) {
- dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__);
- return -EIO;
- }
-
- wfx_scan_complete(wvif, body->num_channels_completed);
-
- return 0;
-}
-
-static int hif_join_complete_indication(struct wfx_dev *wdev,
- const struct hif_msg *hif,
- const void *buf)
-{
- struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface);
-
- if (!wvif) {
- dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__);
- return -EIO;
- }
- dev_warn(wdev->dev, "unattended JoinCompleteInd\n");
-
- return 0;
-}
-
-static int hif_suspend_resume_indication(struct wfx_dev *wdev,
- const struct hif_msg *hif,
- const void *buf)
-{
- const struct hif_ind_suspend_resume_tx *body = buf;
- struct wfx_vif *wvif;
-
- if (body->bc_mc_only) {
- wvif = wdev_to_wvif(wdev, hif->interface);
- if (!wvif) {
- dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__);
- return -EIO;
- }
- if (body->resume)
- wfx_suspend_resume_mc(wvif, STA_NOTIFY_AWAKE);
- else
- wfx_suspend_resume_mc(wvif, STA_NOTIFY_SLEEP);
- } else {
- WARN(body->peer_sta_set, "misunderstood indication");
- WARN(hif->interface != 2, "misunderstood indication");
- if (body->resume)
- wfx_suspend_hot_dev(wdev, STA_NOTIFY_AWAKE);
- else
- wfx_suspend_hot_dev(wdev, STA_NOTIFY_SLEEP);
- }
-
- return 0;
-}
-
-static int hif_generic_indication(struct wfx_dev *wdev,
- const struct hif_msg *hif, const void *buf)
-{
- const struct hif_ind_generic *body = buf;
- int type = le32_to_cpu(body->type);
-
- switch (type) {
- case HIF_GENERIC_INDICATION_TYPE_RAW:
- return 0;
- case HIF_GENERIC_INDICATION_TYPE_STRING:
- dev_info(wdev->dev, "firmware says: %s\n", (char *)&body->data);
- return 0;
- case HIF_GENERIC_INDICATION_TYPE_RX_STATS:
- mutex_lock(&wdev->rx_stats_lock);
- /* Older firmware send a generic indication beside RxStats */
- if (!wfx_api_older_than(wdev, 1, 4))
- dev_info(wdev->dev, "Rx test ongoing. Temperature: %d degrees C\n",
- body->data.rx_stats.current_temp);
- memcpy(&wdev->rx_stats, &body->data.rx_stats,
- sizeof(wdev->rx_stats));
- mutex_unlock(&wdev->rx_stats_lock);
- return 0;
- case HIF_GENERIC_INDICATION_TYPE_TX_POWER_LOOP_INFO:
- mutex_lock(&wdev->tx_power_loop_info_lock);
- memcpy(&wdev->tx_power_loop_info,
- &body->data.tx_power_loop_info,
- sizeof(wdev->tx_power_loop_info));
- mutex_unlock(&wdev->tx_power_loop_info_lock);
- return 0;
- default:
- dev_err(wdev->dev, "generic_indication: unknown indication type: %#.8x\n",
- type);
- return -EIO;
- }
-}
-
-static const struct {
- int val;
- const char *str;
- bool has_param;
-} hif_errors[] = {
- { HIF_ERROR_FIRMWARE_ROLLBACK,
- "rollback status" },
- { HIF_ERROR_FIRMWARE_DEBUG_ENABLED,
- "debug feature enabled" },
- { HIF_ERROR_PDS_PAYLOAD,
- "PDS version is not supported" },
- { HIF_ERROR_PDS_TESTFEATURE,
- "PDS ask for an unknown test mode" },
- { HIF_ERROR_OOR_VOLTAGE,
- "out-of-range power supply voltage", true },
- { HIF_ERROR_OOR_TEMPERATURE,
- "out-of-range temperature", true },
- { HIF_ERROR_SLK_REQ_DURING_KEY_EXCHANGE,
- "secure link does not expect request during key exchange" },
- { HIF_ERROR_SLK_SESSION_KEY,
- "secure link session key is invalid" },
- { HIF_ERROR_SLK_OVERFLOW,
- "secure link overflow" },
- { HIF_ERROR_SLK_WRONG_ENCRYPTION_STATE,
- "secure link messages list does not match message encryption" },
- { HIF_ERROR_SLK_UNCONFIGURED,
- "secure link not yet configured" },
- { HIF_ERROR_HIF_BUS_FREQUENCY_TOO_LOW,
- "bus clock is too slow (<1kHz)" },
- { HIF_ERROR_HIF_RX_DATA_TOO_LARGE,
- "HIF message too large" },
- /* Following errors only exists in old firmware versions: */
- { HIF_ERROR_HIF_TX_QUEUE_FULL,
- "HIF messages queue is full" },
- { HIF_ERROR_HIF_BUS,
- "HIF bus" },
- { HIF_ERROR_SLK_MULTI_TX_UNSUPPORTED,
- "secure link does not support multi-tx confirmations" },
- { HIF_ERROR_SLK_OUTDATED_SESSION_KEY,
- "secure link session key is outdated" },
- { HIF_ERROR_SLK_DECRYPTION,
- "secure link params (nonce or tag) mismatch" },
-};
-
-static int hif_error_indication(struct wfx_dev *wdev,
- const struct hif_msg *hif, const void *buf)
-{
- const struct hif_ind_error *body = buf;
- int type = le32_to_cpu(body->type);
- int param = (s8)body->data[0];
- int i;
-
- for (i = 0; i < ARRAY_SIZE(hif_errors); i++)
- if (type == hif_errors[i].val)
- break;
- if (i < ARRAY_SIZE(hif_errors))
- if (hif_errors[i].has_param)
- dev_err(wdev->dev, "asynchronous error: %s: %d\n",
- hif_errors[i].str, param);
- else
- dev_err(wdev->dev, "asynchronous error: %s\n",
- hif_errors[i].str);
- else
- dev_err(wdev->dev, "asynchronous error: unknown: %08x\n", type);
- print_hex_dump(KERN_INFO, "hif: ", DUMP_PREFIX_OFFSET,
- 16, 1, hif, le16_to_cpu(hif->len), false);
- wdev->chip_frozen = true;
-
- return 0;
-};
-
-static int hif_exception_indication(struct wfx_dev *wdev,
- const struct hif_msg *hif, const void *buf)
-{
- const struct hif_ind_exception *body = buf;
- int type = le32_to_cpu(body->type);
-
- if (type == 4)
- dev_err(wdev->dev, "firmware assert %d\n",
- le32_to_cpup((__le32 *)body->data));
- else
- dev_err(wdev->dev, "firmware exception\n");
- print_hex_dump(KERN_INFO, "hif: ", DUMP_PREFIX_OFFSET,
- 16, 1, hif, le16_to_cpu(hif->len), false);
- wdev->chip_frozen = true;
-
- return -1;
-}
-
-static const struct {
- int msg_id;
- int (*handler)(struct wfx_dev *wdev,
- const struct hif_msg *hif, const void *buf);
-} hif_handlers[] = {
- /* Confirmations */
- { HIF_CNF_ID_TX, hif_tx_confirm },
- { HIF_CNF_ID_MULTI_TRANSMIT, hif_multi_tx_confirm },
- /* Indications */
- { HIF_IND_ID_STARTUP, hif_startup_indication },
- { HIF_IND_ID_WAKEUP, hif_wakeup_indication },
- { HIF_IND_ID_JOIN_COMPLETE, hif_join_complete_indication },
- { HIF_IND_ID_SET_PM_MODE_CMPL, hif_pm_mode_complete_indication },
- { HIF_IND_ID_SCAN_CMPL, hif_scan_complete_indication },
- { HIF_IND_ID_SUSPEND_RESUME_TX, hif_suspend_resume_indication },
- { HIF_IND_ID_EVENT, hif_event_indication },
- { HIF_IND_ID_GENERIC, hif_generic_indication },
- { HIF_IND_ID_ERROR, hif_error_indication },
- { HIF_IND_ID_EXCEPTION, hif_exception_indication },
- /* FIXME: allocate skb_p from hif_receive_indication and make it generic */
- //{ HIF_IND_ID_RX, hif_receive_indication },
-};
-
-void wfx_handle_rx(struct wfx_dev *wdev, struct sk_buff *skb)
-{
- int i;
- const struct hif_msg *hif = (const struct hif_msg *)skb->data;
- int hif_id = hif->id;
-
- if (hif_id == HIF_IND_ID_RX) {
- /* hif_receive_indication take care of skb lifetime */
- hif_receive_indication(wdev, hif, hif->body, skb);
- return;
- }
- /* Note: mutex_is_lock cause an implicit memory barrier that protect
- * buf_send
- */
- if (mutex_is_locked(&wdev->hif_cmd.lock) &&
- wdev->hif_cmd.buf_send &&
- wdev->hif_cmd.buf_send->id == hif_id) {
- hif_generic_confirm(wdev, hif, hif->body);
- goto free;
- }
- for (i = 0; i < ARRAY_SIZE(hif_handlers); i++) {
- if (hif_handlers[i].msg_id == hif_id) {
- if (hif_handlers[i].handler)
- hif_handlers[i].handler(wdev, hif, hif->body);
- goto free;
- }
- }
- if (hif_id & 0x80)
- dev_err(wdev->dev, "unsupported HIF indication: ID %02x\n",
- hif_id);
- else
- dev_err(wdev->dev, "unexpected HIF confirmation: ID %02x\n",
- hif_id);
-free:
- dev_kfree_skb(skb);
-}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.