[deliverable/linux.git] / drivers / net / wireless / ath / wil6210 / main.c

/*
 * 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"

static bool no_fw_recovery;
module_param(no_fw_recovery, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(no_fw_recovery, " disable FW error recovery");

#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 = sta->tid_rx[i];
		sta->tid_rx[i] = NULL;
		wil_tid_ampdu_rx_free(wil, r);
	}
	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 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");

	if (no_fw_recovery)
		return;

	/* 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 started (try %d)...\n",
			 wil->recovery_count);
		wil_reset(wil);

		/* need to re-allocate Rx ring after reset */
		wil_rx_init(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)
{
	wil_dbg_misc(wil, "%s()\n", __func__);

	memset(wil->sta, 0, sizeof(wil->sta));

	mutex_init(&wil->mutex);
	mutex_init(&wil->wmi_mutex);

	init_completion(&wil->wmi_ready);

	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);

	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;

	return 0;
}

void wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid)
{
	del_timer_sync(&wil->connect_timer);
	_wil6210_disconnect(wil, bssid);
}

void wil_priv_deinit(struct wil6210_priv *wil)
{
	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);
}

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);

	/* register read */
#define R(a) ioread32(wil->csr + HOSTADDR(a))
	/* register write */
#define W(a, v) iowrite32(v, wil->csr + HOSTADDR(a))
	/* 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)

	wmb(); /* If host reorder writes here -> race in NIC */
	W(RGF_USER_MAC_CPU_0,  BIT(1)); /* mac_cpu_man_rst */
	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));
	/* hpal_perst_from_pad_src_n_mask */
	S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT(6));
	/* car_perst_rst_src_n_mask */
	S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT(7));
	wmb(); /* order is important here */

	if (is_sparrow) {
		W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f);
		wmb(); /* order is important here */
	}

	W(RGF_USER_USER_CPU_0, BIT(1)); /* user_cpu_man_rst */
	wmb(); /* If host reorder writes here -> race in NIC */
	W(RGF_USER_MAC_CPU_0,  BIT(1)); /* mac_cpu_man_rst */
	wmb(); /* order is important here */

	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 ? 0x000000B0 : 0x00000170);
	W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FC00);
	wmb(); /* order is important here */

	if (is_sparrow) {
		W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0);
		wmb(); /* order is important here */
	}

	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);
	wmb(); /* order is important here */

	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);
	wmb(); /* order is important here */

	/* 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);
	wmb(); /* order is important here */

	wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY);
	return 0;

#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;

	WARN_ON(!mutex_is_locked(&wil->mutex));

	cancel_work_sync(&wil->disconnect_worker);
	wil6210_disconnect(wil, NULL);

	wil->status = 0; /* prevent NAPI from being scheduled */
	if (test_bit(wil_status_napi_en, &wil->status)) {
		napi_synchronize(&wil->napi_rx);
	}

	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;
	}

	wil6210_disable_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;


	/* init after reset */
	wil->pending_connect_cid = -1;
	reinit_completion(&wil->wmi_ready);

	/* TODO: release MAC reset */
	wil6210_enable_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");
	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);
}

static 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);


	napi_enable(&wil->napi_rx);
	napi_enable(&wil->napi_tx);
	set_bit(wil_status_napi_en, &wil->status);

	return 0;
}

int wil_up(struct wil6210_priv *wil)
{
	int rc;

	mutex_lock(&wil->mutex);
	rc = __wil_up(wil);
	mutex_unlock(&wil->mutex);

	return rc;
}

static int __wil_down(struct wil6210_priv *wil)
{
	WARN_ON(!mutex_is_locked(&wil->mutex));

	clear_bit(wil_status_napi_en, &wil->status);
	napi_disable(&wil->napi_rx);
	napi_disable(&wil->napi_tx);

	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;
	}

	wil6210_disconnect(wil, NULL);
	wil_rx_fini(wil);

	return 0;
}

int wil_down(struct wil6210_priv *wil)
{
	int rc;

	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;
}
Commit	Line	Data
2be7d22f	1	/*
02525a79	2	* Copyright (c) 2012-2014 Qualcomm Atheros, Inc.
2be7d22f VK	3	*
	4	* Permission to use, copy, modify, and/or distribute this software for any
	5	* purpose with or without fee is hereby granted, provided that the above
	6	* copyright notice and this permission notice appear in all copies.
	7	*
	8	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	9	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	10	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	11	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	12	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	13	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
	14	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	15	*/
	16
2be7d22f VK	17	#include <linux/moduleparam.h>
2be7d22f VK	18	#include <linux/if_arp.h>
108d1eb6	19	#include <linux/etherdevice.h>
2be7d22f VK	20
2be7d22f VK	21	#include "wil6210.h"
b4490f42	22	#include "txrx.h"
2be7d22f	23
ed6f9dc6 VK	24	static bool no_fw_recovery;
	25	module_param(no_fw_recovery, bool, S_IRUGO \| S_IWUSR);
	26	MODULE_PARM_DESC(no_fw_recovery, " disable FW error recovery");
	27
520d68e7 VK	28	#define RST_DELAY (20) /* msec, for loop in @wil_target_reset */
	29	#define RST_COUNT (1 + 1000/RST_DELAY) /* round up to be above 1 sec total */
	30
2be7d22f VK	31	/*
	32	* Due to a hardware issue,
	33	* one has to read/write to/from NIC in 32-bit chunks;
	34	* regular memcpy_fromio and siblings will
	35	* not work on 64-bit platform - it uses 64-bit transactions
	36	*
	37	* Force 32-bit transactions to enable NIC on 64-bit platforms
	38	*
	39	* To avoid byte swap on big endian host, __raw_{read\|write}l
	40	* should be used - {read\|write}l would swap bytes to provide
	41	* little endian on PCI value in host endianness.
	42	*/
	43	void wil_memcpy_fromio_32(void dst, const volatile void __iomem src,
	44	size_t count)
	45	{
	46	u32 *d = dst;
	47	const volatile u32 __iomem *s = src;
	48
	49	/* size_t is unsigned, if (count%4 != 0) it will wrap */
	50	for (count += 4; count > 4; count -= 4)
	51	*d++ = __raw_readl(s++);
	52	}
	53
	54	void wil_memcpy_toio_32(volatile void __iomem dst, const void src,
	55	size_t count)
	56	{
	57	volatile u32 __iomem *d = dst;
	58	const u32 *s = src;
	59
	60	for (count += 4; count > 4; count -= 4)
	61	__raw_writel(*s++, d++);
	62	}
	63
91886b0b VK	64	static void wil_disconnect_cid(struct wil6210_priv *wil, int cid)
	65	{
	66	uint i;
fc58f681 VK	67	struct net_device *ndev = wil_to_ndev(wil);
fc58f681 VK	68	struct wireless_dev *wdev = wil->wdev;
91886b0b	69	struct wil_sta_info *sta = &wil->sta[cid];
fc58f681 VK	70	wil_dbg_misc(wil, "%s(CID %d, status %d)\n", __func__, cid,
fc58f681 VK	71	sta->status);
4d55a0a1	72
e58c9f70	73	sta->data_port_open = false;
4d55a0a1 VK	74	if (sta->status != wil_sta_unused) {
4d55a0a1 VK	75	wmi_disconnect_sta(wil, sta->addr, WLAN_REASON_DEAUTH_LEAVING);
fc58f681 VK	76	switch (wdev->iftype) {
	77	case NL80211_IFTYPE_AP:
	78	case NL80211_IFTYPE_P2P_GO:
	79	/* AP-like interface */
	80	cfg80211_del_sta(ndev, sta->addr, GFP_KERNEL);
	81	break;
	82	default:
	83	break;
	84	}
4d55a0a1 VK	85	sta->status = wil_sta_unused;
	86	}
	87
91886b0b VK	88	for (i = 0; i < WIL_STA_TID_NUM; i++) {
	89	struct wil_tid_ampdu_rx *r = sta->tid_rx[i];
	90	sta->tid_rx[i] = NULL;
	91	wil_tid_ampdu_rx_free(wil, r);
	92	}
	93	for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) {
	94	if (wil->vring2cid_tid[i][0] == cid)
	95	wil_vring_fini_tx(wil, i);
	96	}
	97	memset(&sta->stats, 0, sizeof(sta->stats));
	98	}
	99
3b3a0162	100	static void _wil6210_disconnect(struct wil6210_priv wil, const u8 bssid)
2be7d22f	101	{
91886b0b	102	int cid = -ENOENT;
2be7d22f	103	struct net_device *ndev = wil_to_ndev(wil);
91886b0b VK	104	struct wireless_dev *wdev = wil->wdev;
	105
	106	might_sleep();
	107	if (bssid) {
	108	cid = wil_find_cid(wil, bssid);
	109	wil_dbg_misc(wil, "%s(%pM, CID %d)\n", __func__, bssid, cid);
	110	} else {
	111	wil_dbg_misc(wil, "%s(all)\n", __func__);
b4490f42 VK	112	}
b4490f42 VK	113
91886b0b VK	114	if (cid >= 0) /* disconnect 1 peer */
	115	wil_disconnect_cid(wil, cid);
	116	else /* disconnect all */
	117	for (cid = 0; cid < WIL6210_MAX_CID; cid++)
	118	wil_disconnect_cid(wil, cid);
	119
	120	/* link state */
	121	switch (wdev->iftype) {
	122	case NL80211_IFTYPE_STATION:
	123	case NL80211_IFTYPE_P2P_CLIENT:
	124	wil_link_off(wil);
	125	if (test_bit(wil_status_fwconnected, &wil->status)) {
	126	clear_bit(wil_status_fwconnected, &wil->status);
	127	cfg80211_disconnected(ndev,
	128	WLAN_STATUS_UNSPECIFIED_FAILURE,
	129	NULL, 0, GFP_KERNEL);
	130	} else if (test_bit(wil_status_fwconnecting, &wil->status)) {
	131	cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0,
	132	WLAN_STATUS_UNSPECIFIED_FAILURE,
	133	GFP_KERNEL);
	134	}
	135	clear_bit(wil_status_fwconnecting, &wil->status);
91886b0b VK	136	break;
91886b0b VK	137	default:
91886b0b	138	break;
2be7d22f	139	}
2be7d22f VK	140	}
	141
	142	static void wil_disconnect_worker(struct work_struct *work)
	143	{
	144	struct wil6210_priv *wil = container_of(work,
	145	struct wil6210_priv, disconnect_worker);
	146
097638a0	147	mutex_lock(&wil->mutex);
2be7d22f	148	_wil6210_disconnect(wil, NULL);
097638a0	149	mutex_unlock(&wil->mutex);
2be7d22f VK	150	}
	151
	152	static void wil_connect_timer_fn(ulong x)
	153	{
	154	struct wil6210_priv wil = (void )x;
	155
7743882d	156	wil_dbg_misc(wil, "Connect timeout\n");
2be7d22f VK	157
	158	/* reschedule to thread context - disconnect won't
	159	* run from atomic context
	160	*/
	161	schedule_work(&wil->disconnect_worker);
	162	}
	163
047e5d74 VK	164	static void wil_scan_timer_fn(ulong x)
	165	{
	166	struct wil6210_priv wil = (void )x;
	167
	168	clear_bit(wil_status_fwready, &wil->status);
	169	wil_err(wil, "Scan timeout detected, start fw error recovery\n");
	170	schedule_work(&wil->fw_error_worker);
	171	}
	172
ed6f9dc6 VK	173	static void wil_fw_error_worker(struct work_struct *work)
	174	{
	175	struct wil6210_priv *wil = container_of(work,
	176	struct wil6210_priv, fw_error_worker);
	177	struct wireless_dev *wdev = wil->wdev;
	178
	179	wil_dbg_misc(wil, "fw error worker\n");
	180
	181	if (no_fw_recovery)
	182	return;
	183
fc219eed VK	184	/* increment @recovery_count if less then WIL6210_FW_RECOVERY_TO
	185	* passed since last recovery attempt
	186	*/
	187	if (time_is_after_jiffies(wil->last_fw_recovery +
	188	WIL6210_FW_RECOVERY_TO))
	189	wil->recovery_count++;
	190	else
	191	wil->recovery_count = 1; /* fw was alive for a long time */
	192
	193	if (wil->recovery_count > WIL6210_FW_RECOVERY_RETRIES) {
	194	wil_err(wil, "too many recovery attempts (%d), giving up\n",
	195	wil->recovery_count);
	196	return;
	197	}
	198
	199	wil->last_fw_recovery = jiffies;
	200
9c3bde56	201	mutex_lock(&wil->mutex);
ed6f9dc6 VK	202	switch (wdev->iftype) {
	203	case NL80211_IFTYPE_STATION:
	204	case NL80211_IFTYPE_P2P_CLIENT:
	205	case NL80211_IFTYPE_MONITOR:
fc219eed VK	206	wil_info(wil, "fw error recovery started (try %d)...\n",
fc219eed VK	207	wil->recovery_count);
ed6f9dc6 VK	208	wil_reset(wil);
	209
	210	/* need to re-allocate Rx ring after reset */
	211	wil_rx_init(wil);
	212	break;
	213	case NL80211_IFTYPE_AP:
	214	case NL80211_IFTYPE_P2P_GO:
	215	/* recovery in these modes is done by upper layers */
	216	break;
	217	default:
	218	break;
	219	}
9c3bde56	220	mutex_unlock(&wil->mutex);
ed6f9dc6 VK	221	}
ed6f9dc6 VK	222
9a177384 VK	223	static int wil_find_free_vring(struct wil6210_priv *wil)
	224	{
	225	int i;
	226	for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) {
	227	if (!wil->vring_tx[i].va)
	228	return i;
	229	}
	230	return -EINVAL;
	231	}
	232
d81079f1 VK	233	static void wil_connect_worker(struct work_struct *work)
	234	{
	235	int rc;
	236	struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
	237	connect_worker);
	238	int cid = wil->pending_connect_cid;
9a177384	239	int ringid = wil_find_free_vring(wil);
d81079f1 VK	240
	241	if (cid < 0) {
	242	wil_err(wil, "No connection pending\n");
	243	return;
	244	}
	245
	246	wil_dbg_wmi(wil, "Configure for connection CID %d\n", cid);
	247
9a177384	248	rc = wil_vring_init_tx(wil, ringid, WIL6210_TX_RING_SIZE, cid, 0);
d81079f1	249	wil->pending_connect_cid = -1;
3df2cd36 VK	250	if (rc == 0) {
3df2cd36 VK	251	wil->sta[cid].status = wil_sta_connected;
d81079f1	252	wil_link_on(wil);
3df2cd36 VK	253	} else {
	254	wil->sta[cid].status = wil_sta_unused;
	255	}
d81079f1 VK	256	}
d81079f1 VK	257
2be7d22f VK	258	int wil_priv_init(struct wil6210_priv *wil)
2be7d22f VK	259	{
7743882d	260	wil_dbg_misc(wil, "%s()\n", __func__);
2be7d22f	261
3df2cd36 VK	262	memset(wil->sta, 0, sizeof(wil->sta));
3df2cd36 VK	263
2be7d22f VK	264	mutex_init(&wil->mutex);
	265	mutex_init(&wil->wmi_mutex);
	266
	267	init_completion(&wil->wmi_ready);
	268
	269	wil->pending_connect_cid = -1;
	270	setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil);
047e5d74	271	setup_timer(&wil->scan_timer, wil_scan_timer_fn, (ulong)wil);
2be7d22f	272
d81079f1	273	INIT_WORK(&wil->connect_worker, wil_connect_worker);
2be7d22f VK	274	INIT_WORK(&wil->disconnect_worker, wil_disconnect_worker);
2be7d22f VK	275	INIT_WORK(&wil->wmi_event_worker, wmi_event_worker);
ed6f9dc6	276	INIT_WORK(&wil->fw_error_worker, wil_fw_error_worker);
2be7d22f VK	277
	278	INIT_LIST_HEAD(&wil->pending_wmi_ev);
	279	spin_lock_init(&wil->wmi_ev_lock);
	280
	281	wil->wmi_wq = create_singlethread_workqueue(WIL_NAME"_wmi");
	282	if (!wil->wmi_wq)
	283	return -EAGAIN;
	284
	285	wil->wmi_wq_conn = create_singlethread_workqueue(WIL_NAME"_connect");
	286	if (!wil->wmi_wq_conn) {
	287	destroy_workqueue(wil->wmi_wq);
	288	return -EAGAIN;
	289	}
	290
fc219eed VK	291	wil->last_fw_recovery = jiffies;
fc219eed VK	292
2be7d22f VK	293	return 0;
	294	}
	295
3b3a0162	296	void wil6210_disconnect(struct wil6210_priv wil, const u8 bssid)
2be7d22f VK	297	{
	298	del_timer_sync(&wil->connect_timer);
	299	_wil6210_disconnect(wil, bssid);
	300	}
	301
	302	void wil_priv_deinit(struct wil6210_priv *wil)
	303	{
047e5d74	304	del_timer_sync(&wil->scan_timer);
2be7d22f	305	cancel_work_sync(&wil->disconnect_worker);
ed6f9dc6	306	cancel_work_sync(&wil->fw_error_worker);
097638a0	307	mutex_lock(&wil->mutex);
2be7d22f	308	wil6210_disconnect(wil, NULL);
097638a0	309	mutex_unlock(&wil->mutex);
2be7d22f VK	310	wmi_event_flush(wil);
	311	destroy_workqueue(wil->wmi_wq_conn);
	312	destroy_workqueue(wil->wmi_wq);
	313	}
	314
bbb2adc7	315	static int wil_target_reset(struct wil6210_priv *wil)
2be7d22f	316	{
98a65b59	317	int delay = 0;
d28bcc30	318	u32 hw_state;
36b10a72	319	u32 rev_id;
6508281b	320	bool is_sparrow = (wil->board->board == WIL_BOARD_SPARROW);
36b10a72	321
6508281b	322	wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->board->name);
2be7d22f	323
36b10a72 VK	324	/* register read */
36b10a72 VK	325	#define R(a) ioread32(wil->csr + HOSTADDR(a))
2be7d22f VK	326	/* register write */
	327	#define W(a, v) iowrite32(v, wil->csr + HOSTADDR(a))
	328	/* register set = read, OR, write */
972072aa VK	329	#define S(a, v) W(a, R(a) \| v)
	330	/* register clear = read, AND with inverted, write */
	331	#define C(a, v) W(a, R(a) & ~v)
2be7d22f	332
cc9e4a2b VK	333	wmb(); /* If host reorder writes here -> race in NIC */
cc9e4a2b VK	334	W(RGF_USER_MAC_CPU_0, BIT(1)); /* mac_cpu_man_rst */
17123991	335	wil->hw_version = R(RGF_USER_FW_REV_ID);
36b10a72	336	rev_id = wil->hw_version & 0xff;
6508281b VK	337
	338	/* Clear MAC link up */
	339	S(RGF_HP_CTRL, BIT(15));
2be7d22f VK	340	/* hpal_perst_from_pad_src_n_mask */
	341	S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT(6));
	342	/* car_perst_rst_src_n_mask */
	343	S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT(7));
260e6951	344	wmb(); /* order is important here */
2be7d22f	345
6508281b VK	346	if (is_sparrow) {
	347	W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f);
	348	wmb(); /* order is important here */
	349	}
	350
2be7d22f	351	W(RGF_USER_USER_CPU_0, BIT(1)); /* user_cpu_man_rst */
cc9e4a2b VK	352	wmb(); /* If host reorder writes here -> race in NIC */
cc9e4a2b VK	353	W(RGF_USER_MAC_CPU_0, BIT(1)); /* mac_cpu_man_rst */
260e6951	354	wmb(); /* order is important here */
2be7d22f	355
2be7d22f VK	356	W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000);
2be7d22f VK	357	W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F);
6508281b	358	W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, is_sparrow ? 0x000000B0 : 0x00000170);
2be7d22f	359	W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FC00);
260e6951	360	wmb(); /* order is important here */
2be7d22f	361
6508281b VK	362	if (is_sparrow) {
	363	W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0);
	364	wmb(); /* order is important here */
	365	}
	366
2be7d22f VK	367	W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0);
	368	W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0);
	369	W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0);
	370	W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0);
260e6951	371	wmb(); /* order is important here */
2be7d22f	372
6508281b VK	373	if (is_sparrow) {
	374	W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003);
	375	/* reset A2 PCIE AHB */
36b10a72	376	W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000);
6508281b VK	377
	378	} else {
	379	W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000001);
	380	if (rev_id == 1) {
	381	/* reset A1 BOTH PCIE AHB & PCIE RGF */
	382	W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00000080);
	383	} else {
	384	W(RGF_PCIE_LOS_COUNTER_CTL, BIT(6) \| BIT(8));
	385	W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000);
	386	}
	387
36b10a72	388	}
6508281b VK	389
6508281b VK	390	/* TODO: check order here!!! Erez code is different */
2be7d22f	391	W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0);
260e6951	392	wmb(); /* order is important here */
2be7d22f	393
520d68e7	394	/* wait until device ready. typical time is 200..250 msec */
36b10a72	395	do {
520d68e7	396	msleep(RST_DELAY);
d28bcc30	397	hw_state = R(RGF_USER_HW_MACHINE_STATE);
520d68e7	398	if (delay++ > RST_COUNT) {
d28bcc30 VK	399	wil_err(wil, "Reset not completed, hw_state 0x%08x\n",
d28bcc30 VK	400	hw_state);
bbb2adc7	401	return -ETIME;
36b10a72	402	}
d28bcc30	403	} while (hw_state != HW_MACHINE_BOOT_DONE);
36b10a72	404
6508281b VK	405	/* TODO: Erez check rev_id != 1 */
6508281b VK	406	if (!is_sparrow && (rev_id != 1))
17123991	407	W(RGF_PCIE_LOS_COUNTER_CTL, BIT(8));
36b10a72	408
972072aa	409	C(RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD);
260e6951	410	wmb(); /* order is important here */
972072aa	411
520d68e7	412	wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY);
bbb2adc7	413	return 0;
2be7d22f	414
36b10a72	415	#undef R
2be7d22f VK	416	#undef W
2be7d22f VK	417	#undef S
972072aa	418	#undef C
2be7d22f VK	419	}
	420
	421	void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r)
	422	{
	423	le32_to_cpus(&r->base);
	424	le16_to_cpus(&r->entry_size);
	425	le16_to_cpus(&r->size);
	426	le32_to_cpus(&r->tail);
	427	le32_to_cpus(&r->head);
	428	}
	429
	430	static int wil_wait_for_fw_ready(struct wil6210_priv *wil)
	431	{
	432	ulong to = msecs_to_jiffies(1000);
	433	ulong left = wait_for_completion_timeout(&wil->wmi_ready, to);
	434	if (0 == left) {
	435	wil_err(wil, "Firmware not ready\n");
	436	return -ETIME;
	437	} else {
15e23124 VK	438	wil_info(wil, "FW ready after %d ms. HW version 0x%08x\n",
15e23124 VK	439	jiffies_to_msecs(to-left), wil->hw_version);
2be7d22f VK	440	}
	441	return 0;
	442	}
	443
	444	/*
	445	* We reset all the structures, and we reset the UMAC.
	446	* After calling this routine, you're expected to reload
	447	* the firmware.
	448	*/
	449	int wil_reset(struct wil6210_priv *wil)
	450	{
	451	int rc;
	452
097638a0 VK	453	WARN_ON(!mutex_is_locked(&wil->mutex));
	454
	455	cancel_work_sync(&wil->disconnect_worker);
	456	wil6210_disconnect(wil, NULL);
	457
0fef1818 VK	458	wil->status = 0; /* prevent NAPI from being scheduled */
	459	if (test_bit(wil_status_napi_en, &wil->status)) {
	460	napi_synchronize(&wil->napi_rx);
0fef1818 VK	461	}
0fef1818 VK	462
ed6f9dc6 VK	463	if (wil->scan_request) {
	464	wil_dbg_misc(wil, "Abort scan_request 0x%p\n",
	465	wil->scan_request);
047e5d74	466	del_timer_sync(&wil->scan_timer);
ed6f9dc6 VK	467	cfg80211_scan_done(wil->scan_request, true);
	468	wil->scan_request = NULL;
	469	}
	470
e08b5906	471	wil6210_disable_irq(wil);
e08b5906	472
2be7d22f VK	473	wmi_event_flush(wil);
2be7d22f VK	474
2be7d22f	475	flush_workqueue(wil->wmi_wq_conn);
e08b5906	476	flush_workqueue(wil->wmi_wq);
2be7d22f	477
bbb2adc7	478	rc = wil_target_reset(wil);
8bf6adb9	479	wil_rx_fini(wil);
bbb2adc7 VK	480	if (rc)
	481	return rc;
	482
8bf6adb9	483
2be7d22f VK	484	/* init after reset */
2be7d22f VK	485	wil->pending_connect_cid = -1;
16735d02	486	reinit_completion(&wil->wmi_ready);
2be7d22f	487
2be7d22f VK	488	/* TODO: release MAC reset */
	489	wil6210_enable_irq(wil);
	490
	491	/* we just started MAC, wait for FW ready */
	492	rc = wil_wait_for_fw_ready(wil);
	493
	494	return rc;
	495	}
	496
ed6f9dc6 VK	497	void wil_fw_error_recovery(struct wil6210_priv *wil)
	498	{
	499	wil_dbg_misc(wil, "starting fw error recovery\n");
	500	schedule_work(&wil->fw_error_worker);
	501	}
2be7d22f VK	502
	503	void wil_link_on(struct wil6210_priv *wil)
	504	{
	505	struct net_device *ndev = wil_to_ndev(wil);
	506
7743882d	507	wil_dbg_misc(wil, "%s()\n", __func__);
2be7d22f VK	508
2be7d22f VK	509	netif_carrier_on(ndev);
55f8f680	510	wil_dbg_misc(wil, "netif_tx_wake : link on\n");
2be7d22f VK	511	netif_tx_wake_all_queues(ndev);
	512	}
	513
	514	void wil_link_off(struct wil6210_priv *wil)
	515	{
	516	struct net_device *ndev = wil_to_ndev(wil);
	517
7743882d	518	wil_dbg_misc(wil, "%s()\n", __func__);
2be7d22f VK	519
2be7d22f VK	520	netif_tx_stop_all_queues(ndev);
55f8f680	521	wil_dbg_misc(wil, "netif_tx_stop : link off\n");
2be7d22f VK	522	netif_carrier_off(ndev);
	523	}
	524
	525	static int __wil_up(struct wil6210_priv *wil)
	526	{
	527	struct net_device *ndev = wil_to_ndev(wil);
	528	struct wireless_dev *wdev = wil->wdev;
2be7d22f	529	int rc;
2be7d22f	530
097638a0 VK	531	WARN_ON(!mutex_is_locked(&wil->mutex));
097638a0 VK	532
2be7d22f VK	533	rc = wil_reset(wil);
	534	if (rc)
	535	return rc;
	536
e31b2562 VK	537	/* Rx VRING. After MAC and beacon */
	538	rc = wil_rx_init(wil);
	539	if (rc)
	540	return rc;
	541
2be7d22f VK	542	switch (wdev->iftype) {
2be7d22f VK	543	case NL80211_IFTYPE_STATION:
7743882d	544	wil_dbg_misc(wil, "type: STATION\n");
2be7d22f VK	545	ndev->type = ARPHRD_ETHER;
	546	break;
	547	case NL80211_IFTYPE_AP:
7743882d	548	wil_dbg_misc(wil, "type: AP\n");
2be7d22f VK	549	ndev->type = ARPHRD_ETHER;
	550	break;
	551	case NL80211_IFTYPE_P2P_CLIENT:
7743882d	552	wil_dbg_misc(wil, "type: P2P_CLIENT\n");
2be7d22f VK	553	ndev->type = ARPHRD_ETHER;
	554	break;
	555	case NL80211_IFTYPE_P2P_GO:
7743882d	556	wil_dbg_misc(wil, "type: P2P_GO\n");
2be7d22f VK	557	ndev->type = ARPHRD_ETHER;
	558	break;
	559	case NL80211_IFTYPE_MONITOR:
7743882d	560	wil_dbg_misc(wil, "type: Monitor\n");
2be7d22f VK	561	ndev->type = ARPHRD_IEEE80211_RADIOTAP;
	562	/* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */
	563	break;
	564	default:
	565	return -EOPNOTSUPP;
	566	}
	567
2be7d22f VK	568	/* MAC address - pre-requisite for other commands */
	569	wmi_set_mac_address(wil, ndev->dev_addr);
	570
2be7d22f	571
e0287c4a VK	572	napi_enable(&wil->napi_rx);
e0287c4a VK	573	napi_enable(&wil->napi_tx);
0fef1818	574	set_bit(wil_status_napi_en, &wil->status);
e0287c4a	575
2be7d22f VK	576	return 0;
	577	}
	578
	579	int wil_up(struct wil6210_priv *wil)
	580	{
	581	int rc;
	582
	583	mutex_lock(&wil->mutex);
	584	rc = __wil_up(wil);
	585	mutex_unlock(&wil->mutex);
	586
	587	return rc;
	588	}
	589
	590	static int __wil_down(struct wil6210_priv *wil)
	591	{
097638a0 VK	592	WARN_ON(!mutex_is_locked(&wil->mutex));
097638a0 VK	593
0fef1818	594	clear_bit(wil_status_napi_en, &wil->status);
e0287c4a VK	595	napi_disable(&wil->napi_rx);
	596	napi_disable(&wil->napi_tx);
	597
2be7d22f	598	if (wil->scan_request) {
2a91d7d0 VK	599	wil_dbg_misc(wil, "Abort scan_request 0x%p\n",
2a91d7d0 VK	600	wil->scan_request);
047e5d74	601	del_timer_sync(&wil->scan_timer);
2be7d22f VK	602	cfg80211_scan_done(wil->scan_request, true);
	603	wil->scan_request = NULL;
	604	}
	605
	606	wil6210_disconnect(wil, NULL);
	607	wil_rx_fini(wil);
	608
	609	return 0;
	610	}
	611
	612	int wil_down(struct wil6210_priv *wil)
	613	{
	614	int rc;
	615
	616	mutex_lock(&wil->mutex);
	617	rc = __wil_down(wil);
	618	mutex_unlock(&wil->mutex);
	619
	620	return rc;
	621	}
3df2cd36 VK	622
	623	int wil_find_cid(struct wil6210_priv wil, const u8 mac)
	624	{
	625	int i;
	626	int rc = -ENOENT;
	627
	628	for (i = 0; i < ARRAY_SIZE(wil->sta); i++) {
	629	if ((wil->sta[i].status != wil_sta_unused) &&
108d1eb6	630	ether_addr_equal(wil->sta[i].addr, mac)) {
3df2cd36 VK	631	rc = i;
	632	break;
	633	}
	634	}
	635
	636	return rc;
	637	}