Fixed MTP to work with TWRP

drivers/net/wireless/ath/wil6210/main.c

@@ -0,0 +1,778 @@
+/*
+ * Copyright (c) 2012-2014 Qualcomm Atheros, Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <linux/moduleparam.h>
+#include <linux/if_arp.h>
+#include <linux/etherdevice.h>
+
+#include "wil6210.h"
+#include "txrx.h"
+#include "wmi.h"
+
+#define WAIT_FOR_DISCONNECT_TIMEOUT_MS 2000
+#define WAIT_FOR_DISCONNECT_INTERVAL_MS 10
+
+bool no_fw_recovery;
+module_param(no_fw_recovery, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(no_fw_recovery, " disable automatic FW error recovery");
+
+static bool no_fw_load = true;
+module_param(no_fw_load, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(no_fw_load, " do not download FW, use one in on-card flash.");
+
+static unsigned int itr_trsh = WIL6210_ITR_TRSH_DEFAULT;
+
+module_param(itr_trsh, uint, S_IRUGO);
+MODULE_PARM_DESC(itr_trsh, " Interrupt moderation threshold, usecs.");
+
+#define RST_DELAY (20) /* msec, for loop in @wil_target_reset */
+#define RST_COUNT (1 + 1000/RST_DELAY) /* round up to be above 1 sec total */
+
+/*
+ * Due to a hardware issue,
+ * one has to read/write to/from NIC in 32-bit chunks;
+ * regular memcpy_fromio and siblings will
+ * not work on 64-bit platform - it uses 64-bit transactions
+ *
+ * Force 32-bit transactions to enable NIC on 64-bit platforms
+ *
+ * To avoid byte swap on big endian host, __raw_{read|write}l
+ * should be used - {read|write}l would swap bytes to provide
+ * little endian on PCI value in host endianness.
+ */
+void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src,
+			  size_t count)
+{
+	u32 *d = dst;
+	const volatile u32 __iomem *s = src;
+
+	/* size_t is unsigned, if (count%4 != 0) it will wrap */
+	for (count += 4; count > 4; count -= 4)
+		*d++ = __raw_readl(s++);
+}
+
+void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src,
+			size_t count)
+{
+	volatile u32 __iomem *d = dst;
+	const u32 *s = src;
+
+	for (count += 4; count > 4; count -= 4)
+		__raw_writel(*s++, d++);
+}
+
+static void wil_disconnect_cid(struct wil6210_priv *wil, int cid)
+{
+	uint i;
+	struct net_device *ndev = wil_to_ndev(wil);
+	struct wireless_dev *wdev = wil->wdev;
+	struct wil_sta_info *sta = &wil->sta[cid];
+
+	wil_dbg_misc(wil, "%s(CID %d, status %d)\n", __func__, cid,
+		     sta->status);
+
+	sta->data_port_open = false;
+	if (sta->status != wil_sta_unused) {
+		wmi_disconnect_sta(wil, sta->addr, WLAN_REASON_DEAUTH_LEAVING);
+		switch (wdev->iftype) {
+		case NL80211_IFTYPE_AP:
+		case NL80211_IFTYPE_P2P_GO:
+			/* AP-like interface */
+			cfg80211_del_sta(ndev, sta->addr, GFP_KERNEL);
+			break;
+		default:
+			break;
+		}
+		sta->status = wil_sta_unused;
+	}
+
+	for (i = 0; i < WIL_STA_TID_NUM; i++) {
+		struct wil_tid_ampdu_rx *r;
+		unsigned long flags;
+
+		spin_lock_irqsave(&sta->tid_rx_lock, flags);
+
+		r = sta->tid_rx[i];
+		sta->tid_rx[i] = NULL;
+		wil_tid_ampdu_rx_free(wil, r);
+
+		spin_unlock_irqrestore(&sta->tid_rx_lock, flags);
+	}
+	for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) {
+		if (wil->vring2cid_tid[i][0] == cid)
+			wil_vring_fini_tx(wil, i);
+	}
+	memset(&sta->stats, 0, sizeof(sta->stats));
+}
+
+static void _wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid)
+{
+	int cid = -ENOENT;
+	struct net_device *ndev = wil_to_ndev(wil);
+	struct wireless_dev *wdev = wil->wdev;
+
+	might_sleep();
+	if (bssid) {
+		cid = wil_find_cid(wil, bssid);
+		wil_dbg_misc(wil, "%s(%pM, CID %d)\n", __func__, bssid, cid);
+	} else {
+		wil_dbg_misc(wil, "%s(all)\n", __func__);
+	}
+
+	if (cid >= 0) /* disconnect 1 peer */
+		wil_disconnect_cid(wil, cid);
+	else /* disconnect all */
+		for (cid = 0; cid < WIL6210_MAX_CID; cid++)
+			wil_disconnect_cid(wil, cid);
+
+	/* link state */
+	switch (wdev->iftype) {
+	case NL80211_IFTYPE_STATION:
+	case NL80211_IFTYPE_P2P_CLIENT:
+		wil_link_off(wil);
+		if (test_bit(wil_status_fwconnected, &wil->status)) {
+			clear_bit(wil_status_fwconnected, &wil->status);
+			cfg80211_disconnected(ndev,
+					      WLAN_STATUS_UNSPECIFIED_FAILURE,
+					      NULL, 0, GFP_KERNEL);
+		} else if (test_bit(wil_status_fwconnecting, &wil->status)) {
+			cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0,
+						WLAN_STATUS_UNSPECIFIED_FAILURE,
+						GFP_KERNEL);
+		}
+		clear_bit(wil_status_fwconnecting, &wil->status);
+		break;
+	default:
+		break;
+	}
+}
+
+static void wil_disconnect_worker(struct work_struct *work)
+{
+	struct wil6210_priv *wil = container_of(work,
+			struct wil6210_priv, disconnect_worker);
+
+	mutex_lock(&wil->mutex);
+	_wil6210_disconnect(wil, NULL);
+	mutex_unlock(&wil->mutex);
+}
+
+static void wil_connect_timer_fn(ulong x)
+{
+	struct wil6210_priv *wil = (void *)x;
+
+	wil_dbg_misc(wil, "Connect timeout\n");
+
+	/* reschedule to thread context - disconnect won't
+	 * run from atomic context
+	 */
+	schedule_work(&wil->disconnect_worker);
+}
+
+static void wil_scan_timer_fn(ulong x)
+{
+	struct wil6210_priv *wil = (void *)x;
+
+	clear_bit(wil_status_fwready, &wil->status);
+	wil_err(wil, "Scan timeout detected, start fw error recovery\n");
+	schedule_work(&wil->fw_error_worker);
+}
+
+static int wil_wait_for_recovery(struct wil6210_priv *wil)
+{
+	if (wait_event_interruptible(wil->wq, wil->recovery_state !=
+				     fw_recovery_pending)) {
+		wil_err(wil, "Interrupt, canceling recovery\n");
+		return -ERESTARTSYS;
+	}
+	if (wil->recovery_state != fw_recovery_running) {
+		wil_info(wil, "Recovery cancelled\n");
+		return -EINTR;
+	}
+	wil_info(wil, "Proceed with recovery\n");
+	return 0;
+}
+
+void wil_set_recovery_state(struct wil6210_priv *wil, int state)
+{
+	wil_dbg_misc(wil, "%s(%d -> %d)\n", __func__,
+		     wil->recovery_state, state);
+
+	wil->recovery_state = state;
+	wake_up_interruptible(&wil->wq);
+}
+
+static void wil_fw_error_worker(struct work_struct *work)
+{
+	struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
+						fw_error_worker);
+	struct wireless_dev *wdev = wil->wdev;
+
+	wil_dbg_misc(wil, "fw error worker\n");
+
+	/* increment @recovery_count if less then WIL6210_FW_RECOVERY_TO
+	 * passed since last recovery attempt
+	 */
+	if (time_is_after_jiffies(wil->last_fw_recovery +
+				  WIL6210_FW_RECOVERY_TO))
+		wil->recovery_count++;
+	else
+		wil->recovery_count = 1; /* fw was alive for a long time */
+
+	if (wil->recovery_count > WIL6210_FW_RECOVERY_RETRIES) {
+		wil_err(wil, "too many recovery attempts (%d), giving up\n",
+			wil->recovery_count);
+		return;
+	}
+
+	wil->last_fw_recovery = jiffies;
+
+	mutex_lock(&wil->mutex);
+	switch (wdev->iftype) {
+	case NL80211_IFTYPE_STATION:
+	case NL80211_IFTYPE_P2P_CLIENT:
+	case NL80211_IFTYPE_MONITOR:
+		wil_info(wil, "fw error recovery requested (try %d)...\n",
+			 wil->recovery_count);
+		if (!no_fw_recovery)
+			wil->recovery_state = fw_recovery_running;
+		if (0 != wil_wait_for_recovery(wil))
+			break;
+
+		__wil_down(wil);
+		__wil_up(wil);
+		break;
+	case NL80211_IFTYPE_AP:
+	case NL80211_IFTYPE_P2P_GO:
+		/* recovery in these modes is done by upper layers */
+		break;
+	default:
+		break;
+	}
+	mutex_unlock(&wil->mutex);
+}
+
+static int wil_find_free_vring(struct wil6210_priv *wil)
+{
+	int i;
+
+	for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) {
+		if (!wil->vring_tx[i].va)
+			return i;
+	}
+	return -EINVAL;
+}
+
+static void wil_connect_worker(struct work_struct *work)
+{
+	int rc;
+	struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
+						connect_worker);
+	int cid = wil->pending_connect_cid;
+	int ringid = wil_find_free_vring(wil);
+
+	if (cid < 0) {
+		wil_err(wil, "No connection pending\n");
+		return;
+	}
+
+	wil_dbg_wmi(wil, "Configure for connection CID %d\n", cid);
+
+	rc = wil_vring_init_tx(wil, ringid, WIL6210_TX_RING_SIZE, cid, 0);
+	wil->pending_connect_cid = -1;
+	if (rc == 0) {
+		wil->sta[cid].status = wil_sta_connected;
+		wil_link_on(wil);
+	} else {
+		wil->sta[cid].status = wil_sta_unused;
+	}
+}
+
+int wil_priv_init(struct wil6210_priv *wil)
+{
+	uint i;
+
+	wil_dbg_misc(wil, "%s()\n", __func__);
+
+	memset(wil->sta, 0, sizeof(wil->sta));
+	for (i = 0; i < WIL6210_MAX_CID; i++)
+		spin_lock_init(&wil->sta[i].tid_rx_lock);
+
+	mutex_init(&wil->mutex);
+	mutex_init(&wil->wmi_mutex);
+
+	init_completion(&wil->wmi_ready);
+	init_completion(&wil->wmi_call);
+
+	wil->pending_connect_cid = -1;
+	setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil);
+	setup_timer(&wil->scan_timer, wil_scan_timer_fn, (ulong)wil);
+
+	INIT_WORK(&wil->connect_worker, wil_connect_worker);
+	INIT_WORK(&wil->disconnect_worker, wil_disconnect_worker);
+	INIT_WORK(&wil->wmi_event_worker, wmi_event_worker);
+	INIT_WORK(&wil->fw_error_worker, wil_fw_error_worker);
+
+	INIT_LIST_HEAD(&wil->pending_wmi_ev);
+	spin_lock_init(&wil->wmi_ev_lock);
+	init_waitqueue_head(&wil->wq);
+
+	wil->wmi_wq = create_singlethread_workqueue(WIL_NAME"_wmi");
+	if (!wil->wmi_wq)
+		return -EAGAIN;
+
+	wil->wmi_wq_conn = create_singlethread_workqueue(WIL_NAME"_connect");
+	if (!wil->wmi_wq_conn) {
+		destroy_workqueue(wil->wmi_wq);
+		return -EAGAIN;
+	}
+
+	wil->last_fw_recovery = jiffies;
+	wil->itr_trsh = itr_trsh;
+
+	return 0;
+}
+
+void wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid)
+{
+	wil_dbg_misc(wil, "%s()\n", __func__);
+
+	del_timer_sync(&wil->connect_timer);
+	_wil6210_disconnect(wil, bssid);
+}
+
+void wil_priv_deinit(struct wil6210_priv *wil)
+{
+	wil_dbg_misc(wil, "%s()\n", __func__);
+
+	wil_set_recovery_state(wil, fw_recovery_idle);
+	del_timer_sync(&wil->scan_timer);
+	cancel_work_sync(&wil->disconnect_worker);
+	cancel_work_sync(&wil->fw_error_worker);
+	mutex_lock(&wil->mutex);
+	wil6210_disconnect(wil, NULL);
+	mutex_unlock(&wil->mutex);
+	wmi_event_flush(wil);
+	destroy_workqueue(wil->wmi_wq_conn);
+	destroy_workqueue(wil->wmi_wq);
+}
+
+/* target operations */
+/* register read */
+#define R(a) ioread32(wil->csr + HOSTADDR(a))
+/* register write. wmb() to make sure it is completed */
+#define W(a, v) do { iowrite32(v, wil->csr + HOSTADDR(a)); wmb(); } while (0)
+/* register set = read, OR, write */
+#define S(a, v) W(a, R(a) | v)
+/* register clear = read, AND with inverted, write */
+#define C(a, v) W(a, R(a) & ~v)
+
+static inline void wil_halt_cpu(struct wil6210_priv *wil)
+{
+	W(RGF_USER_USER_CPU_0, BIT_USER_USER_CPU_MAN_RST);
+	W(RGF_USER_MAC_CPU_0,  BIT_USER_MAC_CPU_MAN_RST);
+}
+
+static inline void wil_release_cpu(struct wil6210_priv *wil)
+{
+	/* Start CPU */
+	W(RGF_USER_USER_CPU_0, 1);
+}
+
+static int wil_target_reset(struct wil6210_priv *wil)
+{
+	int delay = 0;
+	u32 hw_state;
+	u32 rev_id;
+	bool is_sparrow = (wil->board->board == WIL_BOARD_SPARROW);
+
+	wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->board->name);
+
+	wil->hw_version = R(RGF_USER_FW_REV_ID);
+	rev_id = wil->hw_version & 0xff;
+
+	/* Clear MAC link up */
+	S(RGF_HP_CTRL, BIT(15));
+	S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_HPAL_PERST_FROM_PAD);
+	S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_CAR_PERST_RST);
+
+	wil_halt_cpu(wil);
+	C(RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_CAR_AHB_SW_SEL); /* 40 MHz */
+
+	if (is_sparrow) {
+		W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f);
+		W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0xf);
+	}
+
+	W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000);
+	W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F);
+	W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, is_sparrow ? 0x000000f0 : 0x00000170);
+	W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FE00);
+
+	if (is_sparrow) {
+		W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0);
+		W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0x0);
+	}
+
+	W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0);
+	W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0);
+	W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0);
+	W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0);
+
+	if (is_sparrow) {
+		W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003);
+		/* reset A2 PCIE AHB */
+		W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000);
+	} else {
+		W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000001);
+		if (rev_id == 1) {
+			/* reset A1 BOTH PCIE AHB & PCIE RGF */
+			W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00000080);
+		} else {
+			W(RGF_PCIE_LOS_COUNTER_CTL, BIT(6) | BIT(8));
+			W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000);
+		}
+	}
+
+	/* TODO: check order here!!! Erez code is different */
+	W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0);
+
+	/* wait until device ready. typical time is 200..250 msec */
+	do {
+		msleep(RST_DELAY);
+		hw_state = R(RGF_USER_HW_MACHINE_STATE);
+		if (delay++ > RST_COUNT) {
+			wil_err(wil, "Reset not completed, hw_state 0x%08x\n",
+				hw_state);
+			return -ETIME;
+		}
+	} while (hw_state != HW_MACHINE_BOOT_DONE);
+
+	/* TODO: Erez check rev_id != 1 */
+	if (!is_sparrow && (rev_id != 1))
+		W(RGF_PCIE_LOS_COUNTER_CTL, BIT(8));
+
+	C(RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD);
+
+	wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY);
+	return 0;
+}
+
+/**
+ * wil_set_itr_trsh: - apply interrupt coalescing params
+ */
+void wil_set_itr_trsh(struct wil6210_priv *wil)
+{
+	/* disable, use usec resolution */
+	W(RGF_DMA_ITR_CNT_CRL, BIT_DMA_ITR_CNT_CRL_EXT_TICK);
+
+	/* disable interrupt moderation for monitor
+	 * to get better timestamp precision
+	 */
+	if (wil->wdev->iftype == NL80211_IFTYPE_MONITOR)
+		return;
+
+	wil_info(wil, "set ITR_TRSH = %d usec\n", wil->itr_trsh);
+	W(RGF_DMA_ITR_CNT_TRSH, wil->itr_trsh);
+	W(RGF_DMA_ITR_CNT_CRL, BIT_DMA_ITR_CNT_CRL_EN |
+	  BIT_DMA_ITR_CNT_CRL_EXT_TICK); /* start it */
+}
+
+#undef R
+#undef W
+#undef S
+#undef C
+
+void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r)
+{
+	le32_to_cpus(&r->base);
+	le16_to_cpus(&r->entry_size);
+	le16_to_cpus(&r->size);
+	le32_to_cpus(&r->tail);
+	le32_to_cpus(&r->head);
+}
+
+static int wil_wait_for_fw_ready(struct wil6210_priv *wil)
+{
+	ulong to = msecs_to_jiffies(1000);
+	ulong left = wait_for_completion_timeout(&wil->wmi_ready, to);
+
+	if (0 == left) {
+		wil_err(wil, "Firmware not ready\n");
+		return -ETIME;
+	} else {
+		wil_info(wil, "FW ready after %d ms. HW version 0x%08x\n",
+			 jiffies_to_msecs(to-left), wil->hw_version);
+	}
+	return 0;
+}
+
+/*
+ * We reset all the structures, and we reset the UMAC.
+ * After calling this routine, you're expected to reload
+ * the firmware.
+ */
+int wil_reset(struct wil6210_priv *wil)
+{
+	int rc;
+
+	wil_dbg_misc(wil, "%s()\n", __func__);
+
+	WARN_ON(!mutex_is_locked(&wil->mutex));
+	WARN_ON(test_bit(wil_status_napi_en, &wil->status));
+
+	cancel_work_sync(&wil->disconnect_worker);
+	wil6210_disconnect(wil, NULL);
+
+	wil->status = 0; /* prevent NAPI from being scheduled */
+
+	if (wil->scan_request) {
+		wil_dbg_misc(wil, "Abort scan_request 0x%p\n",
+			     wil->scan_request);
+		del_timer_sync(&wil->scan_timer);
+		cfg80211_scan_done(wil->scan_request, true);
+		wil->scan_request = NULL;
+	}
+
+	wil_mask_irq(wil);
+
+	wmi_event_flush(wil);
+
+	flush_workqueue(wil->wmi_wq_conn);
+	flush_workqueue(wil->wmi_wq);
+
+	rc = wil_target_reset(wil);
+	wil_rx_fini(wil);
+	if (rc)
+		return rc;
+
+	if (!no_fw_load) {
+		wil_info(wil, "Use firmware <%s>\n", WIL_FW_NAME);
+		wil_halt_cpu(wil);
+		/* Loading f/w from the file */
+		rc = wil_request_firmware(wil, WIL_FW_NAME);
+		if (rc)
+			return rc;
+
+		/* clear any interrupts which on-card-firmware may have set */
+		wil6210_clear_irq(wil);
+		{ /* CAF_ICR - clear and mask */
+			u32 a = HOSTADDR(RGF_CAF_ICR) +
+				offsetof(struct RGF_ICR, ICR);
+			u32 m = HOSTADDR(RGF_CAF_ICR) +
+				offsetof(struct RGF_ICR, IMV);
+			u32 icr = ioread32(wil->csr + a);
+
+			iowrite32(icr, wil->csr + a); /* W1C */
+			iowrite32(~0, wil->csr + m);
+			wmb(); /* wait for completion */
+		}
+		wil_release_cpu(wil);
+	} else {
+		wil_info(wil, "Use firmware from on-card flash\n");
+	}
+
+	/* init after reset */
+	wil->pending_connect_cid = -1;
+	reinit_completion(&wil->wmi_ready);
+	reinit_completion(&wil->wmi_call);
+
+	wil_unmask_irq(wil);
+
+	/* we just started MAC, wait for FW ready */
+	rc = wil_wait_for_fw_ready(wil);
+
+	return rc;
+}
+
+void wil_fw_error_recovery(struct wil6210_priv *wil)
+{
+	wil_dbg_misc(wil, "starting fw error recovery\n");
+	wil->recovery_state = fw_recovery_pending;
+	schedule_work(&wil->fw_error_worker);
+}
+
+void wil_link_on(struct wil6210_priv *wil)
+{
+	struct net_device *ndev = wil_to_ndev(wil);
+
+	wil_dbg_misc(wil, "%s()\n", __func__);
+
+	netif_carrier_on(ndev);
+	wil_dbg_misc(wil, "netif_tx_wake : link on\n");
+	netif_tx_wake_all_queues(ndev);
+}
+
+void wil_link_off(struct wil6210_priv *wil)
+{
+	struct net_device *ndev = wil_to_ndev(wil);
+
+	wil_dbg_misc(wil, "%s()\n", __func__);
+
+	netif_tx_stop_all_queues(ndev);
+	wil_dbg_misc(wil, "netif_tx_stop : link off\n");
+	netif_carrier_off(ndev);
+}
+
+int __wil_up(struct wil6210_priv *wil)
+{
+	struct net_device *ndev = wil_to_ndev(wil);
+	struct wireless_dev *wdev = wil->wdev;
+	int rc;
+
+	WARN_ON(!mutex_is_locked(&wil->mutex));
+
+	rc = wil_reset(wil);
+	if (rc)
+		return rc;
+
+	/* Rx VRING. After MAC and beacon */
+	rc = wil_rx_init(wil);
+	if (rc)
+		return rc;
+
+	switch (wdev->iftype) {
+	case NL80211_IFTYPE_STATION:
+		wil_dbg_misc(wil, "type: STATION\n");
+		ndev->type = ARPHRD_ETHER;
+		break;
+	case NL80211_IFTYPE_AP:
+		wil_dbg_misc(wil, "type: AP\n");
+		ndev->type = ARPHRD_ETHER;
+		break;
+	case NL80211_IFTYPE_P2P_CLIENT:
+		wil_dbg_misc(wil, "type: P2P_CLIENT\n");
+		ndev->type = ARPHRD_ETHER;
+		break;
+	case NL80211_IFTYPE_P2P_GO:
+		wil_dbg_misc(wil, "type: P2P_GO\n");
+		ndev->type = ARPHRD_ETHER;
+		break;
+	case NL80211_IFTYPE_MONITOR:
+		wil_dbg_misc(wil, "type: Monitor\n");
+		ndev->type = ARPHRD_IEEE80211_RADIOTAP;
+		/* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	/* MAC address - pre-requisite for other commands */
+	wmi_set_mac_address(wil, ndev->dev_addr);
+
+	wil_dbg_misc(wil, "NAPI enable\n");
+	napi_enable(&wil->napi_rx);
+	napi_enable(&wil->napi_tx);
+	set_bit(wil_status_napi_en, &wil->status);
+
+	if (wil->platform_ops.bus_request)
+		wil->platform_ops.bus_request(wil->platform_handle,
+					      WIL_MAX_BUS_REQUEST_KBPS);
+
+	return 0;
+}
+
+int wil_up(struct wil6210_priv *wil)
+{
+	int rc;
+
+	wil_dbg_misc(wil, "%s()\n", __func__);
+
+	mutex_lock(&wil->mutex);
+	rc = __wil_up(wil);
+	mutex_unlock(&wil->mutex);
+
+	return rc;
+}
+
+int __wil_down(struct wil6210_priv *wil)
+{
+	int iter = WAIT_FOR_DISCONNECT_TIMEOUT_MS /
+			WAIT_FOR_DISCONNECT_INTERVAL_MS;
+
+	WARN_ON(!mutex_is_locked(&wil->mutex));
+
+	if (wil->platform_ops.bus_request)
+		wil->platform_ops.bus_request(wil->platform_handle, 0);
+
+	wil_disable_irq(wil);
+	if (test_and_clear_bit(wil_status_napi_en, &wil->status)) {
+		napi_disable(&wil->napi_rx);
+		napi_disable(&wil->napi_tx);
+		wil_dbg_misc(wil, "NAPI disable\n");
+	}
+	wil_enable_irq(wil);
+
+	if (wil->scan_request) {
+		wil_dbg_misc(wil, "Abort scan_request 0x%p\n",
+			     wil->scan_request);
+		del_timer_sync(&wil->scan_timer);
+		cfg80211_scan_done(wil->scan_request, true);
+		wil->scan_request = NULL;
+	}
+
+	if (test_bit(wil_status_fwconnected, &wil->status) ||
+	    test_bit(wil_status_fwconnecting, &wil->status))
+		wmi_send(wil, WMI_DISCONNECT_CMDID, NULL, 0);
+
+	/* make sure wil is idle (not connected) */
+	mutex_unlock(&wil->mutex);
+	while (iter--) {
+		int idle = !test_bit(wil_status_fwconnected, &wil->status) &&
+			   !test_bit(wil_status_fwconnecting, &wil->status);
+		if (idle)
+			break;
+		msleep(WAIT_FOR_DISCONNECT_INTERVAL_MS);
+	}
+	mutex_lock(&wil->mutex);
+
+	if (!iter)
+		wil_err(wil, "timeout waiting for idle FW/HW\n");
+
+	wil_rx_fini(wil);
+
+	return 0;
+}
+
+int wil_down(struct wil6210_priv *wil)
+{
+	int rc;
+
+	wil_dbg_misc(wil, "%s()\n", __func__);
+
+	wil_set_recovery_state(wil, fw_recovery_idle);
+	mutex_lock(&wil->mutex);
+	rc = __wil_down(wil);
+	mutex_unlock(&wil->mutex);
+
+	return rc;
+}
+
+int wil_find_cid(struct wil6210_priv *wil, const u8 *mac)
+{
+	int i;
+	int rc = -ENOENT;
+
+	for (i = 0; i < ARRAY_SIZE(wil->sta); i++) {
+		if ((wil->sta[i].status != wil_sta_unused) &&
+		    ether_addr_equal(wil->sta[i].addr, mac)) {
+			rc = i;
+			break;
+		}
+	}
+
+	return rc;
+}