// SPDX-License-Identifier: ISC
/*
 * Copyright (c) 2012-2017 Qualcomm Atheros, Inc.
 * Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
 */

#include <linux/moduleparam.h>
#include <linux/if_arp.h>
#include <linux/etherdevice.h>
#include <linux/rtnetlink.h>

#include "wil6210.h"
#include "txrx.h"
#include "txrx_edma.h"
#include "wmi.h"
#include "boot_loader.h"

#define WAIT_FOR_HALP_VOTE_MS 100
#define WAIT_FOR_SCAN_ABORT_MS 1000
#define WIL_DEFAULT_NUM_RX_STATUS_RINGS 1
#define WIL_BOARD_FILE_MAX_NAMELEN 128

bool debug_fw; /* = false; */
module_param(debug_fw, bool, 0444);
MODULE_PARM_DESC(debug_fw, " do not perform card reset. For FW debug");

static u8 oob_mode;
module_param(oob_mode, byte, 0444);
MODULE_PARM_DESC(oob_mode,
                 " enable out of the box (OOB) mode in FW, for diagnostics and certification");

bool no_fw_recovery;
module_param(no_fw_recovery, bool, 0644);
MODULE_PARM_DESC(no_fw_recovery, " disable automatic FW error recovery");

/* if not set via modparam, will be set to default value of 1/8 of
 * rx ring size during init flow
 */
unsigned short rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_INIT;
module_param(rx_ring_overflow_thrsh, ushort, 0444);
MODULE_PARM_DESC(rx_ring_overflow_thrsh,
                 " RX ring overflow threshold in descriptors.");

/* We allow allocation of more than 1 page buffers to support large packets.
 * It is suboptimal behavior performance wise in case MTU above page size.
 */
unsigned int mtu_max = TXRX_BUF_LEN_DEFAULT - WIL_MAX_MPDU_OVERHEAD;
static int mtu_max_set(const char *val, const struct kernel_param *kp)
{
        int ret;

        /* sets mtu_max directly. no need to restore it in case of
         * illegal value since we assume this will fail insmod
         */
        ret = param_set_uint(val, kp);
        if (ret)
                return ret;

        if (mtu_max < 68 || mtu_max > WIL_MAX_ETH_MTU)
                ret = -EINVAL;

        return ret;
}

static const struct kernel_param_ops mtu_max_ops = {
        .set = mtu_max_set,
        .get = param_get_uint,
};

module_param_cb(mtu_max, &mtu_max_ops, &mtu_max, 0444);
MODULE_PARM_DESC(mtu_max, " Max MTU value.");

static uint rx_ring_order;
static uint tx_ring_order = WIL_TX_RING_SIZE_ORDER_DEFAULT;
static uint bcast_ring_order = WIL_BCAST_RING_SIZE_ORDER_DEFAULT;

static int ring_order_set(const char *val, const struct kernel_param *kp)
{
        int ret;
        uint x;

        ret = kstrtouint(val, 0, &x);
        if (ret)
                return ret;

        if ((x < WIL_RING_SIZE_ORDER_MIN) || (x > WIL_RING_SIZE_ORDER_MAX))
                return -EINVAL;

        *((uint *)kp->arg) = x;

        return 0;
}

static const struct kernel_param_ops ring_order_ops = {
        .set = ring_order_set,
        .get = param_get_uint,
};

module_param_cb(rx_ring_order, &ring_order_ops, &rx_ring_order, 0444);
MODULE_PARM_DESC(rx_ring_order, " Rx ring order; size = 1 << order");
module_param_cb(tx_ring_order, &ring_order_ops, &tx_ring_order, 0444);
MODULE_PARM_DESC(tx_ring_order, " Tx ring order; size = 1 << order");
module_param_cb(bcast_ring_order, &ring_order_ops, &bcast_ring_order, 0444);
MODULE_PARM_DESC(bcast_ring_order, " Bcast ring order; size = 1 << order");

enum {
        WIL_BOOT_ERR,
        WIL_BOOT_VANILLA,
        WIL_BOOT_PRODUCTION,
        WIL_BOOT_DEVELOPMENT,
};

enum {
        WIL_SIG_STATUS_VANILLA = 0x0,
        WIL_SIG_STATUS_DEVELOPMENT = 0x1,
        WIL_SIG_STATUS_PRODUCTION = 0x2,
        WIL_SIG_STATUS_CORRUPTED_PRODUCTION = 0x3,
};

#define RST_DELAY (20) /* msec, for loop in @wil_wait_device_ready */
#define RST_COUNT (1 + 1000/RST_DELAY) /* round up to be above 1 sec total */

#define PMU_READY_DELAY_MS (4) /* ms, for sleep in @wil_wait_device_ready */

#define OTP_HW_DELAY (200) /* usec, loop in @wil_wait_device_ready_talyn_mb */
/* round up to be above 2 ms total */
#define OTP_HW_COUNT (1 + 2000 / OTP_HW_DELAY)

/*
 * 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;

        for (; count >= 4; count -= 4)
                *d++ = __raw_readl(s++);

        if (unlikely(count)) {
                /* count can be 1..3 */
                u32 tmp = __raw_readl(s);

                memcpy(d, &tmp, count);
        }
}

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)
                __raw_writel(*s++, d++);

        if (unlikely(count)) {
                /* count can be 1..3 */
                u32 tmp = 0;

                memcpy(&tmp, s, count);
                __raw_writel(tmp, d);
        }
}

/* Device memory access is prohibited while reset or suspend.
 * wil_mem_access_lock protects accessing device memory in these cases
 */
int wil_mem_access_lock(struct wil6210_priv *wil)
{
        if (!down_read_trylock(&wil->mem_lock))
                return -EBUSY;

        if (test_bit(wil_status_suspending, wil->status) ||
            test_bit(wil_status_suspended, wil->status)) {
                up_read(&wil->mem_lock);
                return -EBUSY;
        }

        return 0;
}

void wil_mem_access_unlock(struct wil6210_priv *wil)
{
        up_read(&wil->mem_lock);
}

static void wil_ring_fini_tx(struct wil6210_priv *wil, int id)
{
        struct wil_ring *ring = &wil->ring_tx[id];
        struct wil_ring_tx_data *txdata = &wil->ring_tx_data[id];

        lockdep_assert_held(&wil->mutex);

        if (!ring->va)
                return;

        wil_dbg_misc(wil, "vring_fini_tx: id=%d\n", id);

        spin_lock_bh(&txdata->lock);
        txdata->dot1x_open = false;
        txdata->mid = U8_MAX;
        txdata->enabled = 0; /* no Tx can be in progress or start anew */
        spin_unlock_bh(&txdata->lock);
        /* napi_synchronize waits for completion of the current NAPI but will
         * not prevent the next NAPI run.
         * Add a memory barrier to guarantee that txdata->enabled is zeroed
         * before napi_synchronize so that the next scheduled NAPI will not
         * handle this vring
         */
        wmb();
        /* make sure NAPI won't touch this vring */
        if (test_bit(wil_status_napi_en, wil->status))
                napi_synchronize(&wil->napi_tx);

        wil->txrx_ops.ring_fini_tx(wil, ring);
}

static bool wil_vif_is_connected(struct wil6210_priv *wil, u8 mid)
{
        int i;

        for (i = 0; i < wil->max_assoc_sta; i++) {
                if (wil->sta[i].mid == mid &&
                    wil->sta[i].status == wil_sta_connected)
                        return true;
        }

        return false;
}

static void wil_disconnect_cid_complete(struct wil6210_vif *vif, int cid,
                                        u16 reason_code)
__acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock)
{
        uint i;
        struct wil6210_priv *wil = vif_to_wil(vif);
        struct net_device *ndev = vif_to_ndev(vif);
        struct wireless_dev *wdev = vif_to_wdev(vif);
        struct wil_sta_info *sta = &wil->sta[cid];
        int min_ring_id = wil_get_min_tx_ring_id(wil);

        might_sleep();
        wil_dbg_misc(wil,
                     "disconnect_cid_complete: CID %d, MID %d, status %d\n",
                     cid, sta->mid, sta->status);
        /* inform upper layers */
        if (sta->status != wil_sta_unused) {
                if (vif->mid != sta->mid) {
                        wil_err(wil, "STA MID mismatch with VIF MID(%d)\n",
                                vif->mid);
                }

                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;
                sta->mid = U8_MAX;
        }
        /* reorder buffers */
        for (i = 0; i < WIL_STA_TID_NUM; i++) {
                struct wil_tid_ampdu_rx *r;

                spin_lock_bh(&sta->tid_rx_lock);

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

                spin_unlock_bh(&sta->tid_rx_lock);
        }
        /* crypto context */
        memset(sta->tid_crypto_rx, 0, sizeof(sta->tid_crypto_rx));
        memset(&sta->group_crypto_rx, 0, sizeof(sta->group_crypto_rx));
        /* release vrings */
        for (i = min_ring_id; i < ARRAY_SIZE(wil->ring_tx); i++) {
                if (wil->ring2cid_tid[i][0] == cid)
                        wil_ring_fini_tx(wil, i);
        }
        /* statistics */
        memset(&sta->stats, 0, sizeof(sta->stats));
        sta->stats.tx_latency_min_us = U32_MAX;
}

static void _wil6210_disconnect_complete(struct wil6210_vif *vif,
                                         const u8 *bssid, u16 reason_code)
{
        struct wil6210_priv *wil = vif_to_wil(vif);
        int cid = -ENOENT;
        struct net_device *ndev;
        struct wireless_dev *wdev;

        ndev = vif_to_ndev(vif);
        wdev = vif_to_wdev(vif);

        might_sleep();
        wil_info(wil, "disconnect_complete: bssid=%pM, reason=%d\n",
                 bssid, reason_code);

        /* Cases are:
         * - disconnect single STA, still connected
         * - disconnect single STA, already disconnected
         * - disconnect all
         *
         * For "disconnect all", there are 3 options:
         * - bssid == NULL
         * - bssid is broadcast address (ff:ff:ff:ff:ff:ff)
         * - bssid is our MAC address
         */
        if (bssid && !is_broadcast_ether_addr(bssid) &&
            !ether_addr_equal_unaligned(ndev->dev_addr, bssid)) {
                cid = wil_find_cid(wil, vif->mid, bssid);
                wil_dbg_misc(wil,
                             "Disconnect complete %pM, CID=%d, reason=%d\n",
                             bssid, cid, reason_code);
                if (wil_cid_valid(wil, cid)) /* disconnect 1 peer */
                        wil_disconnect_cid_complete(vif, cid, reason_code);
        } else { /* all */
                wil_dbg_misc(wil, "Disconnect complete all\n");
                for (cid = 0; cid < wil->max_assoc_sta; cid++)
                        wil_disconnect_cid_complete(vif, cid, reason_code);
        }

        /* link state */
        switch (wdev->iftype) {
        case NL80211_IFTYPE_STATION:
        case NL80211_IFTYPE_P2P_CLIENT:
                wil_bcast_fini(vif);
                wil_update_net_queues_bh(wil, vif, NULL, true);
                netif_carrier_off(ndev);
                if (!wil_has_other_active_ifaces(wil, ndev, false, true))
                        wil6210_bus_request(wil, WIL_DEFAULT_BUS_REQUEST_KBPS);

                if (test_and_clear_bit(wil_vif_fwconnected, vif->status)) {
                        atomic_dec(&wil->connected_vifs);
                        cfg80211_disconnected(ndev, reason_code,
                                              NULL, 0,
                                              vif->locally_generated_disc,
                                              GFP_KERNEL);
                        vif->locally_generated_disc = false;
                } else if (test_bit(wil_vif_fwconnecting, vif->status)) {
                        cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0,
                                                WLAN_STATUS_UNSPECIFIED_FAILURE,
                                                GFP_KERNEL);
                        vif->bss = NULL;
                }
                clear_bit(wil_vif_fwconnecting, vif->status);
                clear_bit(wil_vif_ft_roam, vif->status);
                vif->ptk_rekey_state = WIL_REKEY_IDLE;

                break;
        case NL80211_IFTYPE_AP:
        case NL80211_IFTYPE_P2P_GO:
                if (!wil_vif_is_connected(wil, vif->mid)) {
                        wil_update_net_queues_bh(wil, vif, NULL, true);
                        if (test_and_clear_bit(wil_vif_fwconnected,
                                               vif->status))
                                atomic_dec(&wil->connected_vifs);
                } else {
                        wil_update_net_queues_bh(wil, vif, NULL, false);
                }
                break;
        default:
                break;
        }
}

static int wil_disconnect_cid(struct wil6210_vif *vif, int cid,
                              u16 reason_code)
{
        struct wil6210_priv *wil = vif_to_wil(vif);
        struct wireless_dev *wdev = vif_to_wdev(vif);
        struct wil_sta_info *sta = &wil->sta[cid];
        bool del_sta = false;

        might_sleep();
        wil_dbg_misc(wil, "disconnect_cid: CID %d, MID %d, status %d\n",
                     cid, sta->mid, sta->status);

        if (sta->status == wil_sta_unused)
                return 0;

        if (vif->mid != sta->mid) {
                wil_err(wil, "STA MID mismatch with VIF MID(%d)\n", vif->mid);
                return -EINVAL;
        }

        /* inform lower layers */
        if (wdev->iftype == NL80211_IFTYPE_AP && disable_ap_sme)
                del_sta = true;

        /* disconnect by sending command disconnect/del_sta and wait
         * synchronously for WMI_DISCONNECT_EVENTID event.
         */
        return wmi_disconnect_sta(vif, sta->addr, reason_code, del_sta);
}

static void _wil6210_disconnect(struct wil6210_vif *vif, const u8 *bssid,
                                u16 reason_code)
{
        struct wil6210_priv *wil;
        struct net_device *ndev;
        int cid = -ENOENT;

        if (unlikely(!vif))
                return;

        wil = vif_to_wil(vif);
        ndev = vif_to_ndev(vif);

        might_sleep();
        wil_info(wil, "disconnect bssid=%pM, reason=%d\n", bssid, reason_code);

        /* Cases are:
         * - disconnect single STA, still connected
         * - disconnect single STA, already disconnected
         * - disconnect all
         *
         * For "disconnect all", there are 3 options:
         * - bssid == NULL
         * - bssid is broadcast address (ff:ff:ff:ff:ff:ff)
         * - bssid is our MAC address
         */
        if (bssid && !is_broadcast_ether_addr(bssid) &&
            !ether_addr_equal_unaligned(ndev->dev_addr, bssid)) {
                cid = wil_find_cid(wil, vif->mid, bssid);
                wil_dbg_misc(wil, "Disconnect %pM, CID=%d, reason=%d\n",
                             bssid, cid, reason_code);
                if (wil_cid_valid(wil, cid)) /* disconnect 1 peer */
                        wil_disconnect_cid(vif, cid, reason_code);
        } else { /* all */
                wil_dbg_misc(wil, "Disconnect all\n");
                for (cid = 0; cid < wil->max_assoc_sta; cid++)
                        wil_disconnect_cid(vif, cid, reason_code);
        }

        /* call event handler manually after processing wmi_call,
         * to avoid deadlock - disconnect event handler acquires
         * wil->mutex while it is already held here
         */
        _wil6210_disconnect_complete(vif, bssid, reason_code);
}

void wil_disconnect_worker(struct work_struct *work)
{
        struct wil6210_vif *vif = container_of(work,
                        struct wil6210_vif, disconnect_worker);
        struct wil6210_priv *wil = vif_to_wil(vif);
        struct net_device *ndev = vif_to_ndev(vif);
        int rc;
        struct {
                struct wmi_cmd_hdr wmi;
                struct wmi_disconnect_event evt;
        } __packed reply;

        if (test_bit(wil_vif_fwconnected, vif->status))
                /* connect succeeded after all */
                return;

        if (!test_bit(wil_vif_fwconnecting, vif->status))
                /* already disconnected */
                return;

        memset(&reply, 0, sizeof(reply));

        rc = wmi_call(wil, WMI_DISCONNECT_CMDID, vif->mid, NULL, 0,
                      WMI_DISCONNECT_EVENTID, &reply, sizeof(reply),
                      WIL6210_DISCONNECT_TO_MS);
        if (rc) {
                wil_err(wil, "disconnect error %d\n", rc);
                return;
        }

        wil_update_net_queues_bh(wil, vif, NULL, true);
        netif_carrier_off(ndev);
        cfg80211_connect_result(ndev, NULL, NULL, 0, NULL, 0,
                                WLAN_STATUS_UNSPECIFIED_FAILURE, GFP_KERNEL);
        clear_bit(wil_vif_fwconnecting, vif->status);
}

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, "set_recovery_state: %d -> %d\n",
                     wil->recovery_state, state);

        wil->recovery_state = state;
        wake_up_interruptible(&wil->wq);
}

bool wil_is_recovery_blocked(struct wil6210_priv *wil)
{
        return no_fw_recovery && (wil->recovery_state == fw_recovery_pending);
}

static void wil_fw_error_worker(struct work_struct *work)
{
        struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
                                                fw_error_worker);
        struct net_device *ndev = wil->main_ndev;
        struct wireless_dev *wdev;

        wil_dbg_misc(wil, "fw error worker\n");

        if (!ndev || !(ndev->flags & IFF_UP)) {
                wil_info(wil, "No recovery - interface is down\n");
                return;
        }
        wdev = ndev->ieee80211_ptr;

        /* 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;

        wil_info(wil, "fw error recovery requested (try %d)...\n",
                 wil->recovery_count);
        if (!no_fw_recovery)
                wil->recovery_state = fw_recovery_running;
        if (wil_wait_for_recovery(wil) != 0)
                return;

        rtnl_lock();
        mutex_lock(&wil->mutex);
        /* Needs adaptation for multiple VIFs
         * need to go over all VIFs and consider the appropriate
         * recovery because each one can have different iftype.
         */
        switch (wdev->iftype) {
        case NL80211_IFTYPE_STATION:
        case NL80211_IFTYPE_P2P_CLIENT:
        case NL80211_IFTYPE_MONITOR:
                /* silent recovery, upper layers will see disconnect */
                __wil_down(wil);
                __wil_up(wil);
                break;
        case NL80211_IFTYPE_AP:
        case NL80211_IFTYPE_P2P_GO:
                if (no_fw_recovery) /* upper layers do recovery */
                        break;
                /* silent recovery, upper layers will see disconnect */
                __wil_down(wil);
                __wil_up(wil);
                mutex_unlock(&wil->mutex);
                wil_cfg80211_ap_recovery(wil);
                mutex_lock(&wil->mutex);
                wil_info(wil, "... completed\n");
                break;
        default:
                wil_err(wil, "No recovery - unknown interface type %d\n",
                        wdev->iftype);
                break;
        }

        mutex_unlock(&wil->mutex);
        rtnl_unlock();
}

static int wil_find_free_ring(struct wil6210_priv *wil)
{
        int i;
        int min_ring_id = wil_get_min_tx_ring_id(wil);

        for (i = min_ring_id; i < WIL6210_MAX_TX_RINGS; i++) {
                if (!wil->ring_tx[i].va)
                        return i;
        }
        return -EINVAL;
}

int wil_ring_init_tx(struct wil6210_vif *vif, int cid)
{
        struct wil6210_priv *wil = vif_to_wil(vif);
        int rc = -EINVAL, ringid;

        if (cid < 0) {
                wil_err(wil, "No connection pending\n");
                goto out;
        }
        ringid = wil_find_free_ring(wil);
        if (ringid < 0) {
                wil_err(wil, "No free vring found\n");
                goto out;
        }

        wil_dbg_wmi(wil, "Configure for connection CID %d MID %d ring %d\n",
                    cid, vif->mid, ringid);

        rc = wil->txrx_ops.ring_init_tx(vif, ringid, 1 << tx_ring_order,
                                        cid, 0);
        if (rc)
                wil_err(wil, "init TX for CID %d MID %d vring %d failed\n",
                        cid, vif->mid, ringid);

out:
        return rc;
}

int wil_bcast_init(struct wil6210_vif *vif)
{
        struct wil6210_priv *wil = vif_to_wil(vif);
        int ri = vif->bcast_ring, rc;

        if (ri >= 0 && wil->ring_tx[ri].va)
                return 0;

        ri = wil_find_free_ring(wil);
        if (ri < 0)
                return ri;

        vif->bcast_ring = ri;
        rc = wil->txrx_ops.ring_init_bcast(vif, ri, 1 << bcast_ring_order);
        if (rc)
                vif->bcast_ring = -1;

        return rc;
}

void wil_bcast_fini(struct wil6210_vif *vif)
{
        struct wil6210_priv *wil = vif_to_wil(vif);
        int ri = vif->bcast_ring;

        if (ri < 0)
                return;

        vif->bcast_ring = -1;
        wil_ring_fini_tx(wil, ri);
}

void wil_bcast_fini_all(struct wil6210_priv *wil)
{
        int i;
        struct wil6210_vif *vif;

        for (i = 0; i < GET_MAX_VIFS(wil); i++) {
                vif = wil->vifs[i];
                if (vif)
                        wil_bcast_fini(vif);
        }
}

int wil_priv_init(struct wil6210_priv *wil)
{
        uint i;

        wil_dbg_misc(wil, "priv_init\n");

        memset(wil->sta, 0, sizeof(wil->sta));
        for (i = 0; i < WIL6210_MAX_CID; i++) {
                spin_lock_init(&wil->sta[i].tid_rx_lock);
                wil->sta[i].mid = U8_MAX;
        }

        for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) {
                spin_lock_init(&wil->ring_tx_data[i].lock);
                wil->ring2cid_tid[i][0] = WIL6210_MAX_CID;
        }

        mutex_init(&wil->mutex);
        mutex_init(&wil->vif_mutex);
        mutex_init(&wil->wmi_mutex);
        mutex_init(&wil->halp.lock);

        init_completion(&wil->wmi_ready);
        init_completion(&wil->wmi_call);
        init_completion(&wil->halp.comp);

        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);
        spin_lock_init(&wil->net_queue_lock);
        spin_lock_init(&wil->eap_lock);

        init_waitqueue_head(&wil->wq);
        init_rwsem(&wil->mem_lock);

        wil->wmi_wq = create_singlethread_workqueue(WIL_NAME "_wmi");
        if (!wil->wmi_wq)
                return -EAGAIN;

        wil->wq_service = create_singlethread_workqueue(WIL_NAME "_service");
        if (!wil->wq_service)
                goto out_wmi_wq;

        wil->last_fw_recovery = jiffies;
        wil->tx_interframe_timeout = WIL6210_ITR_TX_INTERFRAME_TIMEOUT_DEFAULT;
        wil->rx_interframe_timeout = WIL6210_ITR_RX_INTERFRAME_TIMEOUT_DEFAULT;
        wil->tx_max_burst_duration = WIL6210_ITR_TX_MAX_BURST_DURATION_DEFAULT;
        wil->rx_max_burst_duration = WIL6210_ITR_RX_MAX_BURST_DURATION_DEFAULT;

        if (rx_ring_overflow_thrsh == WIL6210_RX_HIGH_TRSH_INIT)
                rx_ring_overflow_thrsh = WIL6210_RX_HIGH_TRSH_DEFAULT;

        wil->ps_profile =  WMI_PS_PROFILE_TYPE_DEFAULT;

        wil->wakeup_trigger = WMI_WAKEUP_TRIGGER_UCAST |
                              WMI_WAKEUP_TRIGGER_BCAST;
        memset(&wil->suspend_stats, 0, sizeof(wil->suspend_stats));
        wil->ring_idle_trsh = 16;

        wil->reply_mid = U8_MAX;
        wil->max_vifs = 1;
        wil->max_assoc_sta = max_assoc_sta;

        /* edma configuration can be updated via debugfs before allocation */
        wil->num_rx_status_rings = WIL_DEFAULT_NUM_RX_STATUS_RINGS;
        wil->tx_status_ring_order = WIL_TX_SRING_SIZE_ORDER_DEFAULT;

        /* Rx status ring size should be bigger than the number of RX buffers
         * in order to prevent backpressure on the status ring, which may
         * cause HW freeze.
         */
        wil->rx_status_ring_order = WIL_RX_SRING_SIZE_ORDER_DEFAULT;
        /* Number of RX buffer IDs should be bigger than the RX descriptor
         * ring size as in HW reorder flow, the HW can consume additional
         * buffers before releasing the previous ones.
         */
        wil->rx_buff_id_count = WIL_RX_BUFF_ARR_SIZE_DEFAULT;

        wil->amsdu_en = true;

        return 0;

out_wmi_wq:
        destroy_workqueue(wil->wmi_wq);

        return -EAGAIN;
}

void wil6210_bus_request(struct wil6210_priv *wil, u32 kbps)
{
        if (wil->platform_ops.bus_request) {
                wil->bus_request_kbps = kbps;
                wil->platform_ops.bus_request(wil->platform_handle, kbps);
        }
}

/**
 * wil6210_disconnect - disconnect one connection
 * @vif: virtual interface context
 * @bssid: peer to disconnect, NULL to disconnect all
 * @reason_code: Reason code for the Disassociation frame
 *
 * Disconnect and release associated resources. Issue WMI
 * command(s) to trigger MAC disconnect. When command was issued
 * successfully, call the wil6210_disconnect_complete function
 * to handle the event synchronously
 */
void wil6210_disconnect(struct wil6210_vif *vif, const u8 *bssid,
                        u16 reason_code)
{
        struct wil6210_priv *wil = vif_to_wil(vif);

        wil_dbg_misc(wil, "disconnecting\n");

        timer_delete_sync(&vif->connect_timer);
        _wil6210_disconnect(vif, bssid, reason_code);
}

/**
 * wil6210_disconnect_complete - handle disconnect event
 * @vif: virtual interface context
 * @bssid: peer to disconnect, NULL to disconnect all
 * @reason_code: Reason code for the Disassociation frame
 *
 * Release associated resources and indicate upper layers the
 * connection is terminated.
 */
void wil6210_disconnect_complete(struct wil6210_vif *vif, const u8 *bssid,
                                 u16 reason_code)
{
        struct wil6210_priv *wil = vif_to_wil(vif);

        wil_dbg_misc(wil, "got disconnect\n");

        timer_delete_sync(&vif->connect_timer);
        _wil6210_disconnect_complete(vif, bssid, reason_code);
}

void wil_priv_deinit(struct wil6210_priv *wil)
{
        wil_dbg_misc(wil, "priv_deinit\n");

        wil_set_recovery_state(wil, fw_recovery_idle);
        cancel_work_sync(&wil->fw_error_worker);
        wmi_event_flush(wil);
        destroy_workqueue(wil->wq_service);
        destroy_workqueue(wil->wmi_wq);
        kfree(wil->brd_info);
}

static void wil_shutdown_bl(struct wil6210_priv *wil)
{
        u32 val;

        wil_s(wil, RGF_USER_BL +
              offsetof(struct bl_dedicated_registers_v1,
                       bl_shutdown_handshake), BL_SHUTDOWN_HS_GRTD);

        usleep_range(100, 150);

        val = wil_r(wil, RGF_USER_BL +
                    offsetof(struct bl_dedicated_registers_v1,
                             bl_shutdown_handshake));
        if (val & BL_SHUTDOWN_HS_RTD) {
                wil_dbg_misc(wil, "BL is ready for halt\n");
                return;
        }

        wil_err(wil, "BL did not report ready for halt\n");
}

/* this format is used by ARC embedded CPU for instruction memory */
static inline u32 ARC_me_imm32(u32 d)
{
        return ((d & 0xffff0000) >> 16) | ((d & 0x0000ffff) << 16);
}

/* defines access to interrupt vectors for wil_freeze_bl */
#define ARC_IRQ_VECTOR_OFFSET(N)        ((N) * 8)
/* ARC long jump instruction */
#define ARC_JAL_INST                    (0x20200f80)

static void wil_freeze_bl(struct wil6210_priv *wil)
{
        u32 jal, upc, saved;
        u32 ivt3 = ARC_IRQ_VECTOR_OFFSET(3);

        jal = wil_r(wil, wil->iccm_base + ivt3);
        if (jal != ARC_me_imm32(ARC_JAL_INST)) {
                wil_dbg_misc(wil, "invalid IVT entry found, skipping\n");
                return;
        }

        /* prevent the target from entering deep sleep
         * and disabling memory access
         */
        saved = wil_r(wil, RGF_USER_USAGE_8);
        wil_w(wil, RGF_USER_USAGE_8, saved | BIT_USER_PREVENT_DEEP_SLEEP);
        usleep_range(20, 25); /* let the BL process the bit */

        /* redirect to endless loop in the INT_L1 context and let it trap */
        wil_w(wil, wil->iccm_base + ivt3 + 4, ARC_me_imm32(ivt3));
        usleep_range(20, 25); /* let the BL get into the trap */

        /* verify the BL is frozen */
        upc = wil_r(wil, RGF_USER_CPU_PC);
        if (upc < ivt3 || (upc > (ivt3 + 8)))
                wil_dbg_misc(wil, "BL freeze failed, PC=0x%08X\n", upc);

        wil_w(wil, RGF_USER_USAGE_8, saved);
}

static void wil_bl_prepare_halt(struct wil6210_priv *wil)
{
        u32 tmp, ver;

        /* before halting device CPU driver must make sure BL is not accessing
         * host memory. This is done differently depending on BL version:
         * 1. For very old BL versions the procedure is skipped
         * (not supported).
         * 2. For old BL version we use a special trick to freeze the BL
         * 3. For new BL versions we shutdown the BL using handshake procedure.
         */
        tmp = wil_r(wil, RGF_USER_BL +
                    offsetof(struct bl_dedicated_registers_v0,
                             boot_loader_struct_version));
        if (!tmp) {
                wil_dbg_misc(wil, "old BL, skipping halt preparation\n");
                return;
        }

        tmp = wil_r(wil, RGF_USER_BL +
                    offsetof(struct bl_dedicated_registers_v1,
                             bl_shutdown_handshake));
        ver = BL_SHUTDOWN_HS_PROT_VER(tmp);

        if (ver > 0)
                wil_shutdown_bl(wil);
        else
                wil_freeze_bl(wil);
}

static inline void wil_halt_cpu(struct wil6210_priv *wil)
{
        if (wil->hw_version >= HW_VER_TALYN_MB) {
                wil_w(wil, RGF_USER_USER_CPU_0_TALYN_MB,
                      BIT_USER_USER_CPU_MAN_RST);
                wil_w(wil, RGF_USER_MAC_CPU_0_TALYN_MB,
                      BIT_USER_MAC_CPU_MAN_RST);
        } else {
                wil_w(wil, RGF_USER_USER_CPU_0, BIT_USER_USER_CPU_MAN_RST);
                wil_w(wil, RGF_USER_MAC_CPU_0,  BIT_USER_MAC_CPU_MAN_RST);
        }
}

static inline void wil_release_cpu(struct wil6210_priv *wil)
{
        /* Start CPU */
        if (wil->hw_version >= HW_VER_TALYN_MB)
                wil_w(wil, RGF_USER_USER_CPU_0_TALYN_MB, 1);
        else
                wil_w(wil, RGF_USER_USER_CPU_0, 1);
}

static void wil_set_oob_mode(struct wil6210_priv *wil, u8 mode)
{
        wil_info(wil, "oob_mode to %d\n", mode);
        switch (mode) {
        case 0:
                wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE |
                      BIT_USER_OOB_R2_MODE);
                break;
        case 1:
                wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_R2_MODE);
                wil_s(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE);
                break;
        case 2:
                wil_c(wil, RGF_USER_USAGE_6, BIT_USER_OOB_MODE);
                wil_s(wil, RGF_USER_USAGE_6, BIT_USER_OOB_R2_MODE);
                break;
        default:
                wil_err(wil, "invalid oob_mode: %d\n", mode);
        }
}

static int wil_wait_device_ready(struct wil6210_priv *wil, int no_flash)
{
        int delay = 0;
        u32 x, x1 = 0;

        /* wait until device ready. */
        if (no_flash) {
                msleep(PMU_READY_DELAY_MS);

                wil_dbg_misc(wil, "Reset completed\n");
        } else {
                do {
                        msleep(RST_DELAY);
                        x = wil_r(wil, RGF_USER_BL +
                                  offsetof(struct bl_dedicated_registers_v0,
                                           boot_loader_ready));
                        if (x1 != x) {
                                wil_dbg_misc(wil, "BL.ready 0x%08x => 0x%08x\n",
                                             x1, x);
                                x1 = x;
                        }
                        if (delay++ > RST_COUNT) {
                                wil_err(wil, "Reset not completed, bl.ready 0x%08x\n",
                                        x);
                                return -ETIME;
                        }
                } while (x != BL_READY);

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

        return 0;
}

static int wil_wait_device_ready_talyn_mb(struct wil6210_priv *wil)
{
        u32 otp_hw;
        u8 signature_status;
        bool otp_signature_err;
        bool hw_section_done;
        u32 otp_qc_secured;
        int delay = 0;

        /* Wait for OTP signature test to complete */
        usleep_range(2000, 2200);

        wil->boot_config = WIL_BOOT_ERR;

        /* Poll until OTP signature status is valid.
         * In vanilla and development modes, when signature test is complete
         * HW sets BIT_OTP_SIGNATURE_ERR_TALYN_MB.
         * In production mode BIT_OTP_SIGNATURE_ERR_TALYN_MB remains 0, poll
         * for signature status change to 2 or 3.
         */
        do {
                otp_hw = wil_r(wil, RGF_USER_OTP_HW_RD_MACHINE_1);
                signature_status = WIL_GET_BITS(otp_hw, 8, 9);
                otp_signature_err = otp_hw & BIT_OTP_SIGNATURE_ERR_TALYN_MB;

                if (otp_signature_err &&
                    signature_status == WIL_SIG_STATUS_VANILLA) {
                        wil->boot_config = WIL_BOOT_VANILLA;
                        break;
                }
                if (otp_signature_err &&
                    signature_status == WIL_SIG_STATUS_DEVELOPMENT) {
                        wil->boot_config = WIL_BOOT_DEVELOPMENT;
                        break;
                }
                if (!otp_signature_err &&
                    signature_status == WIL_SIG_STATUS_PRODUCTION) {
                        wil->boot_config = WIL_BOOT_PRODUCTION;
                        break;
                }
                if  (!otp_signature_err &&
                     signature_status ==
                     WIL_SIG_STATUS_CORRUPTED_PRODUCTION) {
                        /* Unrecognized OTP signature found. Possibly a
                         * corrupted production signature, access control
                         * is applied as in production mode, therefore
                         * do not fail
                         */
                        wil->boot_config = WIL_BOOT_PRODUCTION;
                        break;
                }
                if (delay++ > OTP_HW_COUNT)
                        break;

                usleep_range(OTP_HW_DELAY, OTP_HW_DELAY + 10);
        } while (!otp_signature_err && signature_status == 0);

        if (wil->boot_config == WIL_BOOT_ERR) {
                wil_err(wil,
                        "invalid boot config, signature_status %d otp_signature_err %d\n",
                        signature_status, otp_signature_err);
                return -ETIME;
        }

        wil_dbg_misc(wil,
                     "signature test done in %d usec, otp_hw 0x%x, boot_config %d\n",
                     delay * OTP_HW_DELAY, otp_hw, wil->boot_config);

        if (wil->boot_config == WIL_BOOT_VANILLA)
                /* Assuming not SPI boot (currently not supported) */
                goto out;

        hw_section_done = otp_hw & BIT_OTP_HW_SECTION_DONE_TALYN_MB;
        delay = 0;

        while (!hw_section_done) {
                msleep(RST_DELAY);

                otp_hw = wil_r(wil, RGF_USER_OTP_HW_RD_MACHINE_1);
                hw_section_done = otp_hw & BIT_OTP_HW_SECTION_DONE_TALYN_MB;

                if (delay++ > RST_COUNT) {
                        wil_err(wil, "TO waiting for hw_section_done\n");
                        return -ETIME;
                }
        }

        wil_dbg_misc(wil, "HW section done in %d ms\n", delay * RST_DELAY);

        otp_qc_secured = wil_r(wil, RGF_OTP_QC_SECURED);
        wil->secured_boot = otp_qc_secured & BIT_BOOT_FROM_ROM ? 1 : 0;
        wil_dbg_misc(wil, "secured boot is %sabled\n",
                     wil->secured_boot ? "en" : "dis");

out:
        wil_dbg_misc(wil, "Reset completed\n");

        return 0;
}

static int wil_target_reset(struct wil6210_priv *wil, int no_flash)
{
        u32 x;
        int rc;

        wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->hw_name);

        if (wil->hw_version < HW_VER_TALYN) {
                /* Clear MAC link up */
                wil_s(wil, RGF_HP_CTRL, BIT(15));
                wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0,
                      BIT_HPAL_PERST_FROM_PAD);
                wil_s(wil, RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_CAR_PERST_RST);
        }

        wil_halt_cpu(wil);

        if (!no_flash) {
                /* clear all boot loader "ready" bits */
                wil_w(wil, RGF_USER_BL +
                      offsetof(struct bl_dedicated_registers_v0,
                               boot_loader_ready), 0);
                /* this should be safe to write even with old BLs */
                wil_w(wil, RGF_USER_BL +
                      offsetof(struct bl_dedicated_registers_v1,
                               bl_shutdown_handshake), 0);
        }
        /* Clear Fw Download notification */
        wil_c(wil, RGF_USER_USAGE_6, BIT(0));

        wil_s(wil, RGF_CAF_OSC_CONTROL, BIT_CAF_OSC_XTAL_EN);
        /* XTAL stabilization should take about 3ms */
        usleep_range(5000, 7000);
        x = wil_r(wil, RGF_CAF_PLL_LOCK_STATUS);
        if (!(x & BIT_CAF_OSC_DIG_XTAL_STABLE)) {
                wil_err(wil, "Xtal stabilization timeout\n"
                        "RGF_CAF_PLL_LOCK_STATUS = 0x%08x\n", x);
                return -ETIME;
        }
        /* switch 10k to XTAL*/
        wil_c(wil, RGF_USER_SPARROW_M_4, BIT_SPARROW_M_4_SEL_SLEEP_OR_REF);
        /* 40 MHz */
        wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_CAR_AHB_SW_SEL);

        wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f);
        wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0xf);

        if (wil->hw_version >= HW_VER_TALYN_MB) {
                wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x7e000000);
                wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003f);
                wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0xc00000f0);
                wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xffe7fe00);
        } else {
                wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xfe000000);
                wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003f);
                wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x000000f0);
                wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xffe7fe00);
        }

        wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0);
        wil_w(wil, RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0x0);

        wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0);
        wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0);
        wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0);
        wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0);

        wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003);
        /* reset A2 PCIE AHB */
        wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000);

        wil_w(wil, RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0);

        if (wil->hw_version == HW_VER_TALYN_MB)
                rc = wil_wait_device_ready_talyn_mb(wil);
        else
                rc = wil_wait_device_ready(wil, no_flash);
        if (rc)
                return rc;

        wil_c(wil, RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD);

        /* enable fix for HW bug related to the SA/DA swap in AP Rx */
        wil_s(wil, RGF_DMA_OFUL_NID_0, BIT_DMA_OFUL_NID_0_RX_EXT_TR_EN |
              BIT_DMA_OFUL_NID_0_RX_EXT_A3_SRC);

        if (wil->hw_version < HW_VER_TALYN_MB && no_flash) {
                /* Reset OTP HW vectors to fit 40MHz */
                wil_w(wil, RGF_USER_XPM_IFC_RD_TIME1, 0x60001);
                wil_w(wil, RGF_USER_XPM_IFC_RD_TIME2, 0x20027);
                wil_w(wil, RGF_USER_XPM_IFC_RD_TIME3, 0x1);
                wil_w(wil, RGF_USER_XPM_IFC_RD_TIME4, 0x20027);
                wil_w(wil, RGF_USER_XPM_IFC_RD_TIME5, 0x30003);
                wil_w(wil, RGF_USER_XPM_IFC_RD_TIME6, 0x20002);
                wil_w(wil, RGF_USER_XPM_IFC_RD_TIME7, 0x60001);
                wil_w(wil, RGF_USER_XPM_IFC_RD_TIME8, 0x60001);
                wil_w(wil, RGF_USER_XPM_IFC_RD_TIME9, 0x60001);
                wil_w(wil, RGF_USER_XPM_IFC_RD_TIME10, 0x60001);
                wil_w(wil, RGF_USER_XPM_RD_DOUT_SAMPLE_TIME, 0x57);
        }

        return 0;
}

static void wil_collect_fw_info(struct wil6210_priv *wil)
{
        struct wiphy *wiphy = wil_to_wiphy(wil);
        u8 retry_short;
        int rc;

        wil_refresh_fw_capabilities(wil);

        rc = wmi_get_mgmt_retry(wil, &retry_short);
        if (!rc) {
                wiphy->retry_short = retry_short;
                wil_dbg_misc(wil, "FW retry_short: %d\n", retry_short);
        }
}

void wil_refresh_fw_capabilities(struct wil6210_priv *wil)
{
        struct wiphy *wiphy = wil_to_wiphy(wil);
        int features;

        wil->keep_radio_on_during_sleep =
                test_bit(WIL_PLATFORM_CAPA_RADIO_ON_IN_SUSPEND,
                         wil->platform_capa) &&
                test_bit(WMI_FW_CAPABILITY_D3_SUSPEND, wil->fw_capabilities);

        wil_info(wil, "keep_radio_on_during_sleep (%d)\n",
                 wil->keep_radio_on_during_sleep);

        if (test_bit(WMI_FW_CAPABILITY_RSSI_REPORTING, wil->fw_capabilities))
                wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
        else
                wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;

        if (test_bit(WMI_FW_CAPABILITY_PNO, wil->fw_capabilities)) {
                wiphy->max_sched_scan_reqs = 1;
                wiphy->max_sched_scan_ssids = WMI_MAX_PNO_SSID_NUM;
                wiphy->max_match_sets = WMI_MAX_PNO_SSID_NUM;
                wiphy->max_sched_scan_ie_len = WMI_MAX_IE_LEN;
                wiphy->max_sched_scan_plans = WMI_MAX_PLANS_NUM;
        }

        if (test_bit(WMI_FW_CAPABILITY_TX_REQ_EXT, wil->fw_capabilities))
                wiphy->flags |= WIPHY_FLAG_OFFCHAN_TX;

        if (wil->platform_ops.set_features) {
                features = (test_bit(WMI_FW_CAPABILITY_REF_CLOCK_CONTROL,
                                     wil->fw_capabilities) &&
                            test_bit(WIL_PLATFORM_CAPA_EXT_CLK,
                                     wil->platform_capa)) ?
                        BIT(WIL_PLATFORM_FEATURE_FW_EXT_CLK_CONTROL) : 0;

                if (wil->n_msi == 3)
                        features |= BIT(WIL_PLATFORM_FEATURE_TRIPLE_MSI);

                wil->platform_ops.set_features(wil->platform_handle, features);
        }

        if (test_bit(WMI_FW_CAPABILITY_BACK_WIN_SIZE_64,
                     wil->fw_capabilities)) {
                wil->max_agg_wsize = WIL_MAX_AGG_WSIZE_64;
                wil->max_ampdu_size = WIL_MAX_AMPDU_SIZE_128;
        } else {
                wil->max_agg_wsize = WIL_MAX_AGG_WSIZE;
                wil->max_ampdu_size = WIL_MAX_AMPDU_SIZE;
        }

        update_supported_bands(wil);
}

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);
}

/* construct actual board file name to use */
void wil_get_board_file(struct wil6210_priv *wil, char *buf, size_t len)
{
        const char *board_file;
        const char *wil_talyn_fw_name = ftm_mode ? WIL_FW_NAME_FTM_TALYN :
                              WIL_FW_NAME_TALYN;

        if (wil->board_file) {
                board_file = wil->board_file;
        } else {
                /* If specific FW file is used for Talyn,
                 * use specific board file
                 */
                if (strcmp(wil->wil_fw_name, wil_talyn_fw_name) == 0)
                        board_file = WIL_BRD_NAME_TALYN;
                else
                        board_file = WIL_BOARD_FILE_NAME;
        }

        strscpy(buf, board_file, len);
}

static int wil_get_bl_info(struct wil6210_priv *wil)
{
        struct net_device *ndev = wil->main_ndev;
        struct wiphy *wiphy = wil_to_wiphy(wil);
        union {
                struct bl_dedicated_registers_v0 bl0;
                struct bl_dedicated_registers_v1 bl1;
        } bl;
        u32 bl_ver;
        u8 *mac;
        u16 rf_status;

        wil_memcpy_fromio_32(&bl, wil->csr + HOSTADDR(RGF_USER_BL),
                             sizeof(bl));
        bl_ver = le32_to_cpu(bl.bl0.boot_loader_struct_version);
        mac = bl.bl0.mac_address;

        if (bl_ver == 0) {
                le32_to_cpus(&bl.bl0.rf_type);
                le32_to_cpus(&bl.bl0.baseband_type);
                rf_status = 0; /* actually, unknown */
                wil_info(wil,
                         "Boot Loader struct v%d: MAC = %pM RF = 0x%08x bband = 0x%08x\n",
                         bl_ver, mac,
                         bl.bl0.rf_type, bl.bl0.baseband_type);
                wil_info(wil, "Boot Loader build unknown for struct v0\n");
        } else {
                le16_to_cpus(&bl.bl1.rf_type);
                rf_status = le16_to_cpu(bl.bl1.rf_status);
                le32_to_cpus(&bl.bl1.baseband_type);
                le16_to_cpus(&bl.bl1.bl_version_subminor);
                le16_to_cpus(&bl.bl1.bl_version_build);
                wil_info(wil,
                         "Boot Loader struct v%d: MAC = %pM RF = 0x%04x (status 0x%04x) bband = 0x%08x\n",
                         bl_ver, mac,
                         bl.bl1.rf_type, rf_status,
                         bl.bl1.baseband_type);
                wil_info(wil, "Boot Loader build %d.%d.%d.%d\n",
                         bl.bl1.bl_version_major, bl.bl1.bl_version_minor,
                         bl.bl1.bl_version_subminor, bl.bl1.bl_version_build);
        }

        if (!is_valid_ether_addr(mac)) {
                wil_err(wil, "BL: Invalid MAC %pM\n", mac);
                return -EINVAL;
        }

        ether_addr_copy(ndev->perm_addr, mac);
        ether_addr_copy(wiphy->perm_addr, mac);
        if (!is_valid_ether_addr(ndev->dev_addr))
                eth_hw_addr_set(ndev, mac);

        if (rf_status) {/* bad RF cable? */
                wil_err(wil, "RF communication error 0x%04x",
                        rf_status);
                return -EAGAIN;
        }

        return 0;
}

static void wil_bl_crash_info(struct wil6210_priv *wil, bool is_err)
{
        u32 bl_assert_code, bl_assert_blink, bl_magic_number;
        u32 bl_ver = wil_r(wil, RGF_USER_BL +
                           offsetof(struct bl_dedicated_registers_v0,
                                    boot_loader_struct_version));

        if (bl_ver < 2)
                return;

        bl_assert_code = wil_r(wil, RGF_USER_BL +
                               offsetof(struct bl_dedicated_registers_v1,
                                        bl_assert_code));
        bl_assert_blink = wil_r(wil, RGF_USER_BL +
                                offsetof(struct bl_dedicated_registers_v1,
                                         bl_assert_blink));
        bl_magic_number = wil_r(wil, RGF_USER_BL +
                                offsetof(struct bl_dedicated_registers_v1,
                                         bl_magic_number));

        if (is_err) {
                wil_err(wil,
                        "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n",
                        bl_assert_code, bl_assert_blink, bl_magic_number);
        } else {
                wil_dbg_misc(wil,
                             "BL assert code 0x%08x blink 0x%08x magic 0x%08x\n",
                             bl_assert_code, bl_assert_blink, bl_magic_number);
        }
}

static int wil_get_otp_info(struct wil6210_priv *wil)
{
        struct net_device *ndev = wil->main_ndev;
        struct wiphy *wiphy = wil_to_wiphy(wil);
        u8 mac[8];
        int mac_addr;

        /* OEM MAC has precedence */
        mac_addr = RGF_OTP_OEM_MAC;
        wil_memcpy_fromio_32(mac, wil->csr + HOSTADDR(mac_addr), sizeof(mac));

        if (is_valid_ether_addr(mac)) {
                wil_info(wil, "using OEM MAC %pM\n", mac);
        } else {
                if (wil->hw_version >= HW_VER_TALYN_MB)
                        mac_addr = RGF_OTP_MAC_TALYN_MB;
                else
                        mac_addr = RGF_OTP_MAC;

                wil_memcpy_fromio_32(mac, wil->csr + HOSTADDR(mac_addr),
                                     sizeof(mac));
        }

        if (!is_valid_ether_addr(mac)) {
                wil_err(wil, "Invalid MAC %pM\n", mac);
                return -EINVAL;
        }

        ether_addr_copy(ndev->perm_addr, mac);
        ether_addr_copy(wiphy->perm_addr, mac);
        if (!is_valid_ether_addr(ndev->dev_addr))
                eth_hw_addr_set(ndev, mac);

        return 0;
}

static int wil_wait_for_fw_ready(struct wil6210_priv *wil)
{
        ulong to = msecs_to_jiffies(2000);
        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;
}

void wil_abort_scan(struct wil6210_vif *vif, bool sync)
{
        struct wil6210_priv *wil = vif_to_wil(vif);
        int rc;
        struct cfg80211_scan_info info = {
                .aborted = true,
        };

        lockdep_assert_held(&wil->vif_mutex);

        if (!vif->scan_request)
                return;

        wil_dbg_misc(wil, "Abort scan_request 0x%p\n", vif->scan_request);
        timer_delete_sync(&vif->scan_timer);
        mutex_unlock(&wil->vif_mutex);
        rc = wmi_abort_scan(vif);
        if (!rc && sync)
                wait_event_interruptible_timeout(wil->wq, !vif->scan_request,
                                                 msecs_to_jiffies(
                                                 WAIT_FOR_SCAN_ABORT_MS));

        mutex_lock(&wil->vif_mutex);
        if (vif->scan_request) {
                cfg80211_scan_done(vif->scan_request, &info);
                vif->scan_request = NULL;
        }
}

void wil_abort_scan_all_vifs(struct wil6210_priv *wil, bool sync)
{
        int i;

        lockdep_assert_held(&wil->vif_mutex);

        for (i = 0; i < GET_MAX_VIFS(wil); i++) {
                struct wil6210_vif *vif = wil->vifs[i];

                if (vif)
                        wil_abort_scan(vif, sync);
        }
}

int wil_ps_update(struct wil6210_priv *wil, enum wmi_ps_profile_type ps_profile)
{
        int rc;

        if (!test_bit(WMI_FW_CAPABILITY_PS_CONFIG, wil->fw_capabilities)) {
                wil_err(wil, "set_power_mgmt not supported\n");
                return -EOPNOTSUPP;
        }

        rc  = wmi_ps_dev_profile_cfg(wil, ps_profile);
        if (rc)
                wil_err(wil, "wmi_ps_dev_profile_cfg failed (%d)\n", rc);
        else
                wil->ps_profile = ps_profile;

        return rc;
}

static void wil_pre_fw_config(struct wil6210_priv *wil)
{
        wil_clear_fw_log_addr(wil);
        /* Mark FW as loaded from host */
        wil_s(wil, RGF_USER_USAGE_6, 1);

        /* clear any interrupts which on-card-firmware
         * may have set
         */
        wil6210_clear_irq(wil);
        /* CAF_ICR - clear and mask */
        /* it is W1C, clear by writing back same value */
        if (wil->hw_version < HW_VER_TALYN_MB) {
                wil_s(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, ICR), 0);
                wil_w(wil, RGF_CAF_ICR + offsetof(struct RGF_ICR, IMV), ~0);
        }
        /* clear PAL_UNIT_ICR (potential D0->D3 leftover)
         * In Talyn-MB host cannot access this register due to
         * access control, hence PAL_UNIT_ICR is cleared by the FW
         */
        if (wil->hw_version < HW_VER_TALYN_MB)
                wil_s(wil, RGF_PAL_UNIT_ICR + offsetof(struct RGF_ICR, ICR),
                      0);

        if (wil->fw_calib_result > 0) {
                __le32 val = cpu_to_le32(wil->fw_calib_result |
                                                (CALIB_RESULT_SIGNATURE << 8));
                wil_w(wil, RGF_USER_FW_CALIB_RESULT, (u32 __force)val);
        }
}

static int wil_restore_vifs(struct wil6210_priv *wil)
{
        struct wil6210_vif *vif;
        struct net_device *ndev;
        struct wireless_dev *wdev;
        int i, rc;

        for (i = 0; i < GET_MAX_VIFS(wil); i++) {
                vif = wil->vifs[i];
                if (!vif)
                        continue;
                vif->ap_isolate = 0;
                if (vif->mid) {
                        ndev = vif_to_ndev(vif);
                        wdev = vif_to_wdev(vif);
                        rc = wmi_port_allocate(wil, vif->mid, ndev->dev_addr,
                                               wdev->iftype);
                        if (rc) {
                                wil_err(wil, "fail to restore VIF %d type %d, rc %d\n",
                                        i, wdev->iftype, rc);
                                return rc;
                        }
                }
        }

        return 0;
}

/*
 * Clear FW and ucode log start addr to indicate FW log is not ready. The host
 * driver clears the addresses before FW starts and FW initializes the address
 * when it is ready to send logs.
 */
void wil_clear_fw_log_addr(struct wil6210_priv *wil)
{
        /* FW log addr */
        wil_w(wil, RGF_USER_USAGE_1, 0);
        /* ucode log addr */
        wil_w(wil, RGF_USER_USAGE_2, 0);
        wil_dbg_misc(wil, "Cleared FW and ucode log address");
}

/*
 * 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, bool load_fw)
{
        int rc, i;
        unsigned long status_flags = BIT(wil_status_resetting);
        int no_flash;
        struct wil6210_vif *vif;

        wil_dbg_misc(wil, "reset\n");

        WARN_ON(!mutex_is_locked(&wil->mutex));
        WARN_ON(test_bit(wil_status_napi_en, wil->status));

        if (debug_fw) {
                static const u8 mac[ETH_ALEN] = {
                        0x00, 0xde, 0xad, 0x12, 0x34, 0x56,
                };
                struct net_device *ndev = wil->main_ndev;

                ether_addr_copy(ndev->perm_addr, mac);
                eth_hw_addr_set(ndev, ndev->perm_addr);
                return 0;
        }

        if (wil->hw_version == HW_VER_UNKNOWN)
                return -ENODEV;

        if (test_bit(WIL_PLATFORM_CAPA_T_PWR_ON_0, wil->platform_capa) &&
            wil->hw_version < HW_VER_TALYN_MB) {
                wil_dbg_misc(wil, "Notify FW to set T_POWER_ON=0\n");
                wil_s(wil, RGF_USER_USAGE_8, BIT_USER_SUPPORT_T_POWER_ON_0);
        }

        if (test_bit(WIL_PLATFORM_CAPA_EXT_CLK, wil->platform_capa)) {
                wil_dbg_misc(wil, "Notify FW on ext clock configuration\n");
                wil_s(wil, RGF_USER_USAGE_8, BIT_USER_EXT_CLK);
        }

        if (wil->platform_ops.notify) {
                rc = wil->platform_ops.notify(wil->platform_handle,
                                              WIL_PLATFORM_EVT_PRE_RESET);
                if (rc)
                        wil_err(wil, "PRE_RESET platform notify failed, rc %d\n",
                                rc);
        }

        set_bit(wil_status_resetting, wil->status);
        mutex_lock(&wil->vif_mutex);
        wil_abort_scan_all_vifs(wil, false);
        mutex_unlock(&wil->vif_mutex);

        for (i = 0; i < GET_MAX_VIFS(wil); i++) {
                vif = wil->vifs[i];
                if (vif) {
                        cancel_work_sync(&vif->disconnect_worker);
                        wil6210_disconnect(vif, NULL,
                                           WLAN_REASON_DEAUTH_LEAVING);
                        vif->ptk_rekey_state = WIL_REKEY_IDLE;
                }
        }
        wil_bcast_fini_all(wil);

        /* Disable device led before reset*/
        wmi_led_cfg(wil, false);

        down_write(&wil->mem_lock);

        /* prevent NAPI from being scheduled and prevent wmi commands */
        mutex_lock(&wil->wmi_mutex);
        if (test_bit(wil_status_suspending, wil->status))
                status_flags |= BIT(wil_status_suspending);
        bitmap_and(wil->status, wil->status, &status_flags,
                   wil_status_last);
        wil_dbg_misc(wil, "wil->status (0x%lx)\n", *wil->status);
        mutex_unlock(&wil->wmi_mutex);

        wil_mask_irq(wil);

        wmi_event_flush(wil);

        flush_workqueue(wil->wq_service);
        flush_workqueue(wil->wmi_wq);

        no_flash = test_bit(hw_capa_no_flash, wil->hw_capa);
        if (!no_flash)
                wil_bl_crash_info(wil, false);
        wil_disable_irq(wil);
        rc = wil_target_reset(wil, no_flash);
        wil6210_clear_irq(wil);
        wil_enable_irq(wil);
        wil->txrx_ops.rx_fini(wil);
        wil->txrx_ops.tx_fini(wil);
        if (rc) {
                if (!no_flash)
                        wil_bl_crash_info(wil, true);
                goto out;
        }

        if (no_flash) {
                rc = wil_get_otp_info(wil);
        } else {
                rc = wil_get_bl_info(wil);
                if (rc == -EAGAIN && !load_fw)
                        /* ignore RF error if not going up */
                        rc = 0;
        }
        if (rc)
                goto out;

        wil_set_oob_mode(wil, oob_mode);
        if (load_fw) {
                char board_file[WIL_BOARD_FILE_MAX_NAMELEN];

                if  (wil->secured_boot) {
                        wil_err(wil, "secured boot is not supported\n");
                        up_write(&wil->mem_lock);
                        return -ENOTSUPP;
                }

                board_file[0] = '\0';
                wil_get_board_file(wil, board_file, sizeof(board_file));
                wil_info(wil, "Use firmware <%s> + board <%s>\n",
                         wil->wil_fw_name, board_file);

                if (!no_flash)
                        wil_bl_prepare_halt(wil);

                wil_halt_cpu(wil);
                memset(wil->fw_version, 0, sizeof(wil->fw_version));
                /* Loading f/w from the file */
                rc = wil_request_firmware(wil, wil->wil_fw_name, true);
                if (rc)
                        goto out;
                if (wil->num_of_brd_entries)
                        rc = wil_request_board(wil, board_file);
                else
                        rc = wil_request_firmware(wil, board_file, true);
                if (rc)
                        goto out;

                wil_pre_fw_config(wil);
                wil_release_cpu(wil);
        }

        /* init after reset */
        reinit_completion(&wil->wmi_ready);
        reinit_completion(&wil->wmi_call);
        reinit_completion(&wil->halp.comp);

        clear_bit(wil_status_resetting, wil->status);

        up_write(&wil->mem_lock);

        if (load_fw) {
                wil_unmask_irq(wil);

                /* we just started MAC, wait for FW ready */
                rc = wil_wait_for_fw_ready(wil);
                if (rc)
                        return rc;

                /* check FW is responsive */
                rc = wmi_echo(wil);
                if (rc) {
                        wil_err(wil, "wmi_echo failed, rc %d\n", rc);
                        return rc;
                }

                wil->txrx_ops.configure_interrupt_moderation(wil);

                /* Enable OFU rdy valid bug fix, to prevent hang in oful34_rx
                 * while there is back-pressure from Host during RX
                 */
                if (wil->hw_version >= HW_VER_TALYN_MB)
                        wil_s(wil, RGF_DMA_MISC_CTL,
                              BIT_OFUL34_RDY_VALID_BUG_FIX_EN);

                rc = wil_restore_vifs(wil);
                if (rc) {
                        wil_err(wil, "failed to restore vifs, rc %d\n", rc);
                        return rc;
                }

                wil_collect_fw_info(wil);

                if (wil->ps_profile != WMI_PS_PROFILE_TYPE_DEFAULT)
                        wil_ps_update(wil, wil->ps_profile);

                if (wil->platform_ops.notify) {
                        rc = wil->platform_ops.notify(wil->platform_handle,
                                                      WIL_PLATFORM_EVT_FW_RDY);
                        if (rc) {
                                wil_err(wil, "FW_RDY notify failed, rc %d\n",
                                        rc);
                                rc = 0;
                        }
                }
        }

        return rc;

out:
        up_write(&wil->mem_lock);
        clear_bit(wil_status_resetting, wil->status);
        return rc;
}

void wil_fw_error_recovery(struct wil6210_priv *wil)
{
        wil_dbg_misc(wil, "starting fw error recovery\n");

        if (test_bit(wil_status_resetting, wil->status)) {
                wil_info(wil, "Reset already in progress\n");
                return;
        }

        wil->recovery_state = fw_recovery_pending;
        schedule_work(&wil->fw_error_worker);
}

int __wil_up(struct wil6210_priv *wil)
{
        struct net_device *ndev = wil->main_ndev;
        struct wireless_dev *wdev = ndev->ieee80211_ptr;
        int rc;

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

        rc = wil_reset(wil, true);
        if (rc)
                return rc;

        /* Rx RING. After MAC and beacon */
        if (rx_ring_order == 0)
                rx_ring_order = wil->hw_version < HW_VER_TALYN_MB ?
                        WIL_RX_RING_SIZE_ORDER_DEFAULT :
                        WIL_RX_RING_SIZE_ORDER_TALYN_DEFAULT;

        rc = wil->txrx_ops.rx_init(wil, rx_ring_order);
        if (rc)
                return rc;

        rc = wil->txrx_ops.tx_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);

        wil6210_bus_request(wil, WIL_DEFAULT_BUS_REQUEST_KBPS);

        return 0;
}

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

        wil_dbg_misc(wil, "up\n");

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

        return rc;
}

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

        set_bit(wil_status_resetting, wil->status);

        wil6210_bus_request(wil, 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);

        mutex_lock(&wil->vif_mutex);
        wil_p2p_stop_radio_operations(wil);
        wil_abort_scan_all_vifs(wil, false);
        mutex_unlock(&wil->vif_mutex);

        rc = wil_reset(wil, false);

        return rc;
}

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

        wil_dbg_misc(wil, "down\n");

        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, u8 mid, const u8 *mac)
{
        int i;
        int rc = -ENOENT;

        for (i = 0; i < wil->max_assoc_sta; i++) {
                if (wil->sta[i].mid == mid &&
                    wil->sta[i].status != wil_sta_unused &&
                    ether_addr_equal(wil->sta[i].addr, mac)) {
                        rc = i;
                        break;
                }
        }

        return rc;
}

void wil_halp_vote(struct wil6210_priv *wil)
{
        unsigned long rc;
        unsigned long to_jiffies = msecs_to_jiffies(WAIT_FOR_HALP_VOTE_MS);

        if (wil->hw_version >= HW_VER_TALYN_MB)
                return;

        mutex_lock(&wil->halp.lock);

        wil_dbg_irq(wil, "halp_vote: start, HALP ref_cnt (%d)\n",
                    wil->halp.ref_cnt);

        if (++wil->halp.ref_cnt == 1) {
                reinit_completion(&wil->halp.comp);
                /* mark to IRQ context to handle HALP ICR */
                wil->halp.handle_icr = true;
                wil6210_set_halp(wil);
                rc = wait_for_completion_timeout(&wil->halp.comp, to_jiffies);
                if (!rc) {
                        wil_err(wil, "HALP vote timed out\n");
                        /* Mask HALP as done in case the interrupt is raised */
                        wil->halp.handle_icr = false;
                        wil6210_mask_halp(wil);
                } else {
                        wil_dbg_irq(wil,
                                    "halp_vote: HALP vote completed after %d ms\n",
                                    jiffies_to_msecs(to_jiffies - rc));
                }
        }

        wil_dbg_irq(wil, "halp_vote: end, HALP ref_cnt (%d)\n",
                    wil->halp.ref_cnt);

        mutex_unlock(&wil->halp.lock);
}

void wil_halp_unvote(struct wil6210_priv *wil)
{
        if (wil->hw_version >= HW_VER_TALYN_MB)
                return;

        WARN_ON(wil->halp.ref_cnt == 0);

        mutex_lock(&wil->halp.lock);

        wil_dbg_irq(wil, "halp_unvote: start, HALP ref_cnt (%d)\n",
                    wil->halp.ref_cnt);

        if (--wil->halp.ref_cnt == 0) {
                wil6210_clear_halp(wil);
                wil_dbg_irq(wil, "HALP unvote\n");
        }

        wil_dbg_irq(wil, "halp_unvote:end, HALP ref_cnt (%d)\n",
                    wil->halp.ref_cnt);

        mutex_unlock(&wil->halp.lock);
}

void wil_init_txrx_ops(struct wil6210_priv *wil)
{
        if (wil->use_enhanced_dma_hw)
                wil_init_txrx_ops_edma(wil);
        else
                wil_init_txrx_ops_legacy_dma(wil);
}