12be7d22fSVladimir Kondratiev /* 202525a79SVladimir Kondratiev * Copyright (c) 2012-2014 Qualcomm Atheros, Inc. 32be7d22fSVladimir Kondratiev * 42be7d22fSVladimir Kondratiev * Permission to use, copy, modify, and/or distribute this software for any 52be7d22fSVladimir Kondratiev * purpose with or without fee is hereby granted, provided that the above 62be7d22fSVladimir Kondratiev * copyright notice and this permission notice appear in all copies. 72be7d22fSVladimir Kondratiev * 82be7d22fSVladimir Kondratiev * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 92be7d22fSVladimir Kondratiev * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 102be7d22fSVladimir Kondratiev * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 112be7d22fSVladimir Kondratiev * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 122be7d22fSVladimir Kondratiev * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 132be7d22fSVladimir Kondratiev * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 142be7d22fSVladimir Kondratiev * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 152be7d22fSVladimir Kondratiev */ 162be7d22fSVladimir Kondratiev 172be7d22fSVladimir Kondratiev #include <linux/moduleparam.h> 182be7d22fSVladimir Kondratiev #include <linux/if_arp.h> 19108d1eb6SVladimir Kondratiev #include <linux/etherdevice.h> 202be7d22fSVladimir Kondratiev 212be7d22fSVladimir Kondratiev #include "wil6210.h" 22b4490f42SVladimir Kondratiev #include "txrx.h" 232be7d22fSVladimir Kondratiev 24ed6f9dc6SVladimir Kondratiev static bool no_fw_recovery; 25ed6f9dc6SVladimir Kondratiev module_param(no_fw_recovery, bool, S_IRUGO | S_IWUSR); 26ed6f9dc6SVladimir Kondratiev MODULE_PARM_DESC(no_fw_recovery, " disable FW error recovery"); 27ed6f9dc6SVladimir Kondratiev 28151a9706SVladimir Kondratiev static bool no_fw_load = true; 29151a9706SVladimir Kondratiev module_param(no_fw_load, bool, S_IRUGO | S_IWUSR); 30151a9706SVladimir Kondratiev MODULE_PARM_DESC(no_fw_load, " do not download FW, use one in on-card flash."); 31151a9706SVladimir Kondratiev 32520d68e7SVladimir Kondratiev #define RST_DELAY (20) /* msec, for loop in @wil_target_reset */ 33520d68e7SVladimir Kondratiev #define RST_COUNT (1 + 1000/RST_DELAY) /* round up to be above 1 sec total */ 34520d68e7SVladimir Kondratiev 352be7d22fSVladimir Kondratiev /* 362be7d22fSVladimir Kondratiev * Due to a hardware issue, 372be7d22fSVladimir Kondratiev * one has to read/write to/from NIC in 32-bit chunks; 382be7d22fSVladimir Kondratiev * regular memcpy_fromio and siblings will 392be7d22fSVladimir Kondratiev * not work on 64-bit platform - it uses 64-bit transactions 402be7d22fSVladimir Kondratiev * 412be7d22fSVladimir Kondratiev * Force 32-bit transactions to enable NIC on 64-bit platforms 422be7d22fSVladimir Kondratiev * 432be7d22fSVladimir Kondratiev * To avoid byte swap on big endian host, __raw_{read|write}l 442be7d22fSVladimir Kondratiev * should be used - {read|write}l would swap bytes to provide 452be7d22fSVladimir Kondratiev * little endian on PCI value in host endianness. 462be7d22fSVladimir Kondratiev */ 472be7d22fSVladimir Kondratiev void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src, 482be7d22fSVladimir Kondratiev size_t count) 492be7d22fSVladimir Kondratiev { 502be7d22fSVladimir Kondratiev u32 *d = dst; 512be7d22fSVladimir Kondratiev const volatile u32 __iomem *s = src; 522be7d22fSVladimir Kondratiev 532be7d22fSVladimir Kondratiev /* size_t is unsigned, if (count%4 != 0) it will wrap */ 542be7d22fSVladimir Kondratiev for (count += 4; count > 4; count -= 4) 552be7d22fSVladimir Kondratiev *d++ = __raw_readl(s++); 562be7d22fSVladimir Kondratiev } 572be7d22fSVladimir Kondratiev 582be7d22fSVladimir Kondratiev void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src, 592be7d22fSVladimir Kondratiev size_t count) 602be7d22fSVladimir Kondratiev { 612be7d22fSVladimir Kondratiev volatile u32 __iomem *d = dst; 622be7d22fSVladimir Kondratiev const u32 *s = src; 632be7d22fSVladimir Kondratiev 642be7d22fSVladimir Kondratiev for (count += 4; count > 4; count -= 4) 652be7d22fSVladimir Kondratiev __raw_writel(*s++, d++); 662be7d22fSVladimir Kondratiev } 672be7d22fSVladimir Kondratiev 6891886b0bSVladimir Kondratiev static void wil_disconnect_cid(struct wil6210_priv *wil, int cid) 692be7d22fSVladimir Kondratiev { 7091886b0bSVladimir Kondratiev uint i; 71fc58f681SVladimir Kondratiev struct net_device *ndev = wil_to_ndev(wil); 72fc58f681SVladimir Kondratiev struct wireless_dev *wdev = wil->wdev; 73b4490f42SVladimir Kondratiev struct wil_sta_info *sta = &wil->sta[cid]; 748fe59627SVladimir Kondratiev 75fc58f681SVladimir Kondratiev wil_dbg_misc(wil, "%s(CID %d, status %d)\n", __func__, cid, 76fc58f681SVladimir Kondratiev sta->status); 774d55a0a1SVladimir Kondratiev 78e58c9f70SVladimir Kondratiev sta->data_port_open = false; 794d55a0a1SVladimir Kondratiev if (sta->status != wil_sta_unused) { 804d55a0a1SVladimir Kondratiev wmi_disconnect_sta(wil, sta->addr, WLAN_REASON_DEAUTH_LEAVING); 81fc58f681SVladimir Kondratiev switch (wdev->iftype) { 82fc58f681SVladimir Kondratiev case NL80211_IFTYPE_AP: 83fc58f681SVladimir Kondratiev case NL80211_IFTYPE_P2P_GO: 84fc58f681SVladimir Kondratiev /* AP-like interface */ 85fc58f681SVladimir Kondratiev cfg80211_del_sta(ndev, sta->addr, GFP_KERNEL); 86fc58f681SVladimir Kondratiev break; 87fc58f681SVladimir Kondratiev default: 88fc58f681SVladimir Kondratiev break; 89fc58f681SVladimir Kondratiev } 904d55a0a1SVladimir Kondratiev sta->status = wil_sta_unused; 914d55a0a1SVladimir Kondratiev } 924d55a0a1SVladimir Kondratiev 93b4490f42SVladimir Kondratiev for (i = 0; i < WIL_STA_TID_NUM; i++) { 94b4490f42SVladimir Kondratiev struct wil_tid_ampdu_rx *r = sta->tid_rx[i]; 95b4490f42SVladimir Kondratiev sta->tid_rx[i] = NULL; 96b4490f42SVladimir Kondratiev wil_tid_ampdu_rx_free(wil, r); 97b4490f42SVladimir Kondratiev } 9891886b0bSVladimir Kondratiev for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) { 9991886b0bSVladimir Kondratiev if (wil->vring2cid_tid[i][0] == cid) 10091886b0bSVladimir Kondratiev wil_vring_fini_tx(wil, i); 10191886b0bSVladimir Kondratiev } 10291886b0bSVladimir Kondratiev memset(&sta->stats, 0, sizeof(sta->stats)); 103b4490f42SVladimir Kondratiev } 104b4490f42SVladimir Kondratiev 1053b3a0162SJohannes Berg static void _wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid) 10691886b0bSVladimir Kondratiev { 10791886b0bSVladimir Kondratiev int cid = -ENOENT; 10891886b0bSVladimir Kondratiev struct net_device *ndev = wil_to_ndev(wil); 10991886b0bSVladimir Kondratiev struct wireless_dev *wdev = wil->wdev; 11091886b0bSVladimir Kondratiev 11191886b0bSVladimir Kondratiev might_sleep(); 11291886b0bSVladimir Kondratiev if (bssid) { 11391886b0bSVladimir Kondratiev cid = wil_find_cid(wil, bssid); 11491886b0bSVladimir Kondratiev wil_dbg_misc(wil, "%s(%pM, CID %d)\n", __func__, bssid, cid); 11591886b0bSVladimir Kondratiev } else { 11691886b0bSVladimir Kondratiev wil_dbg_misc(wil, "%s(all)\n", __func__); 11791886b0bSVladimir Kondratiev } 11891886b0bSVladimir Kondratiev 11991886b0bSVladimir Kondratiev if (cid >= 0) /* disconnect 1 peer */ 12091886b0bSVladimir Kondratiev wil_disconnect_cid(wil, cid); 12191886b0bSVladimir Kondratiev else /* disconnect all */ 12291886b0bSVladimir Kondratiev for (cid = 0; cid < WIL6210_MAX_CID; cid++) 12391886b0bSVladimir Kondratiev wil_disconnect_cid(wil, cid); 12491886b0bSVladimir Kondratiev 12591886b0bSVladimir Kondratiev /* link state */ 12691886b0bSVladimir Kondratiev switch (wdev->iftype) { 12791886b0bSVladimir Kondratiev case NL80211_IFTYPE_STATION: 12891886b0bSVladimir Kondratiev case NL80211_IFTYPE_P2P_CLIENT: 1292be7d22fSVladimir Kondratiev wil_link_off(wil); 130b338f74eSVladimir Kondratiev if (test_bit(wil_status_fwconnected, &wil->status)) { 1312be7d22fSVladimir Kondratiev clear_bit(wil_status_fwconnected, &wil->status); 132b338f74eSVladimir Kondratiev cfg80211_disconnected(ndev, 133b338f74eSVladimir Kondratiev WLAN_STATUS_UNSPECIFIED_FAILURE, 1342be7d22fSVladimir Kondratiev NULL, 0, GFP_KERNEL); 135b338f74eSVladimir Kondratiev } else if (test_bit(wil_status_fwconnecting, &wil->status)) { 1362be7d22fSVladimir Kondratiev cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0, 1372be7d22fSVladimir Kondratiev WLAN_STATUS_UNSPECIFIED_FAILURE, 1382be7d22fSVladimir Kondratiev GFP_KERNEL); 1392be7d22fSVladimir Kondratiev } 140b338f74eSVladimir Kondratiev clear_bit(wil_status_fwconnecting, &wil->status); 14191886b0bSVladimir Kondratiev break; 14291886b0bSVladimir Kondratiev default: 14391886b0bSVladimir Kondratiev break; 14491886b0bSVladimir Kondratiev } 1452be7d22fSVladimir Kondratiev } 1462be7d22fSVladimir Kondratiev 1472be7d22fSVladimir Kondratiev static void wil_disconnect_worker(struct work_struct *work) 1482be7d22fSVladimir Kondratiev { 1492be7d22fSVladimir Kondratiev struct wil6210_priv *wil = container_of(work, 1502be7d22fSVladimir Kondratiev struct wil6210_priv, disconnect_worker); 1512be7d22fSVladimir Kondratiev 152097638a0SVladimir Kondratiev mutex_lock(&wil->mutex); 1532be7d22fSVladimir Kondratiev _wil6210_disconnect(wil, NULL); 154097638a0SVladimir Kondratiev mutex_unlock(&wil->mutex); 1552be7d22fSVladimir Kondratiev } 1562be7d22fSVladimir Kondratiev 1572be7d22fSVladimir Kondratiev static void wil_connect_timer_fn(ulong x) 1582be7d22fSVladimir Kondratiev { 1592be7d22fSVladimir Kondratiev struct wil6210_priv *wil = (void *)x; 1602be7d22fSVladimir Kondratiev 1617743882dSVladimir Kondratiev wil_dbg_misc(wil, "Connect timeout\n"); 1622be7d22fSVladimir Kondratiev 1632be7d22fSVladimir Kondratiev /* reschedule to thread context - disconnect won't 1642be7d22fSVladimir Kondratiev * run from atomic context 1652be7d22fSVladimir Kondratiev */ 1662be7d22fSVladimir Kondratiev schedule_work(&wil->disconnect_worker); 1672be7d22fSVladimir Kondratiev } 1682be7d22fSVladimir Kondratiev 169047e5d74SVladimir Kondratiev static void wil_scan_timer_fn(ulong x) 170047e5d74SVladimir Kondratiev { 171047e5d74SVladimir Kondratiev struct wil6210_priv *wil = (void *)x; 172047e5d74SVladimir Kondratiev 173047e5d74SVladimir Kondratiev clear_bit(wil_status_fwready, &wil->status); 174047e5d74SVladimir Kondratiev wil_err(wil, "Scan timeout detected, start fw error recovery\n"); 175047e5d74SVladimir Kondratiev schedule_work(&wil->fw_error_worker); 176047e5d74SVladimir Kondratiev } 177047e5d74SVladimir Kondratiev 178ed6f9dc6SVladimir Kondratiev static void wil_fw_error_worker(struct work_struct *work) 179ed6f9dc6SVladimir Kondratiev { 180ed6f9dc6SVladimir Kondratiev struct wil6210_priv *wil = container_of(work, 181ed6f9dc6SVladimir Kondratiev struct wil6210_priv, fw_error_worker); 182ed6f9dc6SVladimir Kondratiev struct wireless_dev *wdev = wil->wdev; 183ed6f9dc6SVladimir Kondratiev 184ed6f9dc6SVladimir Kondratiev wil_dbg_misc(wil, "fw error worker\n"); 185ed6f9dc6SVladimir Kondratiev 186ed6f9dc6SVladimir Kondratiev if (no_fw_recovery) 187ed6f9dc6SVladimir Kondratiev return; 188ed6f9dc6SVladimir Kondratiev 189fc219eedSVladimir Kondratiev /* increment @recovery_count if less then WIL6210_FW_RECOVERY_TO 190fc219eedSVladimir Kondratiev * passed since last recovery attempt 191fc219eedSVladimir Kondratiev */ 192fc219eedSVladimir Kondratiev if (time_is_after_jiffies(wil->last_fw_recovery + 193fc219eedSVladimir Kondratiev WIL6210_FW_RECOVERY_TO)) 194fc219eedSVladimir Kondratiev wil->recovery_count++; 195fc219eedSVladimir Kondratiev else 196fc219eedSVladimir Kondratiev wil->recovery_count = 1; /* fw was alive for a long time */ 197fc219eedSVladimir Kondratiev 198fc219eedSVladimir Kondratiev if (wil->recovery_count > WIL6210_FW_RECOVERY_RETRIES) { 199fc219eedSVladimir Kondratiev wil_err(wil, "too many recovery attempts (%d), giving up\n", 200fc219eedSVladimir Kondratiev wil->recovery_count); 201fc219eedSVladimir Kondratiev return; 202fc219eedSVladimir Kondratiev } 203fc219eedSVladimir Kondratiev 204fc219eedSVladimir Kondratiev wil->last_fw_recovery = jiffies; 205fc219eedSVladimir Kondratiev 2069c3bde56SVladimir Kondratiev mutex_lock(&wil->mutex); 207ed6f9dc6SVladimir Kondratiev switch (wdev->iftype) { 208ed6f9dc6SVladimir Kondratiev case NL80211_IFTYPE_STATION: 209ed6f9dc6SVladimir Kondratiev case NL80211_IFTYPE_P2P_CLIENT: 210ed6f9dc6SVladimir Kondratiev case NL80211_IFTYPE_MONITOR: 211fc219eedSVladimir Kondratiev wil_info(wil, "fw error recovery started (try %d)...\n", 212fc219eedSVladimir Kondratiev wil->recovery_count); 213ed6f9dc6SVladimir Kondratiev wil_reset(wil); 214ed6f9dc6SVladimir Kondratiev 215ed6f9dc6SVladimir Kondratiev /* need to re-allocate Rx ring after reset */ 216ed6f9dc6SVladimir Kondratiev wil_rx_init(wil); 217ed6f9dc6SVladimir Kondratiev break; 218ed6f9dc6SVladimir Kondratiev case NL80211_IFTYPE_AP: 219ed6f9dc6SVladimir Kondratiev case NL80211_IFTYPE_P2P_GO: 220ed6f9dc6SVladimir Kondratiev /* recovery in these modes is done by upper layers */ 221ed6f9dc6SVladimir Kondratiev break; 222ed6f9dc6SVladimir Kondratiev default: 223ed6f9dc6SVladimir Kondratiev break; 224ed6f9dc6SVladimir Kondratiev } 2259c3bde56SVladimir Kondratiev mutex_unlock(&wil->mutex); 226ed6f9dc6SVladimir Kondratiev } 227ed6f9dc6SVladimir Kondratiev 2289a177384SVladimir Kondratiev static int wil_find_free_vring(struct wil6210_priv *wil) 2299a177384SVladimir Kondratiev { 2309a177384SVladimir Kondratiev int i; 2318fe59627SVladimir Kondratiev 2329a177384SVladimir Kondratiev for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { 2339a177384SVladimir Kondratiev if (!wil->vring_tx[i].va) 2349a177384SVladimir Kondratiev return i; 2359a177384SVladimir Kondratiev } 2369a177384SVladimir Kondratiev return -EINVAL; 2379a177384SVladimir Kondratiev } 2389a177384SVladimir Kondratiev 239d81079f1SVladimir Kondratiev static void wil_connect_worker(struct work_struct *work) 240d81079f1SVladimir Kondratiev { 241d81079f1SVladimir Kondratiev int rc; 242d81079f1SVladimir Kondratiev struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 243d81079f1SVladimir Kondratiev connect_worker); 244d81079f1SVladimir Kondratiev int cid = wil->pending_connect_cid; 2459a177384SVladimir Kondratiev int ringid = wil_find_free_vring(wil); 246d81079f1SVladimir Kondratiev 247d81079f1SVladimir Kondratiev if (cid < 0) { 248d81079f1SVladimir Kondratiev wil_err(wil, "No connection pending\n"); 249d81079f1SVladimir Kondratiev return; 250d81079f1SVladimir Kondratiev } 251d81079f1SVladimir Kondratiev 252d81079f1SVladimir Kondratiev wil_dbg_wmi(wil, "Configure for connection CID %d\n", cid); 253d81079f1SVladimir Kondratiev 2549a177384SVladimir Kondratiev rc = wil_vring_init_tx(wil, ringid, WIL6210_TX_RING_SIZE, cid, 0); 255d81079f1SVladimir Kondratiev wil->pending_connect_cid = -1; 2563df2cd36SVladimir Kondratiev if (rc == 0) { 2573df2cd36SVladimir Kondratiev wil->sta[cid].status = wil_sta_connected; 258d81079f1SVladimir Kondratiev wil_link_on(wil); 2593df2cd36SVladimir Kondratiev } else { 2603df2cd36SVladimir Kondratiev wil->sta[cid].status = wil_sta_unused; 2613df2cd36SVladimir Kondratiev } 262d81079f1SVladimir Kondratiev } 263d81079f1SVladimir Kondratiev 2642be7d22fSVladimir Kondratiev int wil_priv_init(struct wil6210_priv *wil) 2652be7d22fSVladimir Kondratiev { 2667743882dSVladimir Kondratiev wil_dbg_misc(wil, "%s()\n", __func__); 2672be7d22fSVladimir Kondratiev 2683df2cd36SVladimir Kondratiev memset(wil->sta, 0, sizeof(wil->sta)); 2693df2cd36SVladimir Kondratiev 2702be7d22fSVladimir Kondratiev mutex_init(&wil->mutex); 2712be7d22fSVladimir Kondratiev mutex_init(&wil->wmi_mutex); 2722be7d22fSVladimir Kondratiev 2732be7d22fSVladimir Kondratiev init_completion(&wil->wmi_ready); 2742be7d22fSVladimir Kondratiev 2752be7d22fSVladimir Kondratiev wil->pending_connect_cid = -1; 2762be7d22fSVladimir Kondratiev setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil); 277047e5d74SVladimir Kondratiev setup_timer(&wil->scan_timer, wil_scan_timer_fn, (ulong)wil); 2782be7d22fSVladimir Kondratiev 279d81079f1SVladimir Kondratiev INIT_WORK(&wil->connect_worker, wil_connect_worker); 2802be7d22fSVladimir Kondratiev INIT_WORK(&wil->disconnect_worker, wil_disconnect_worker); 2812be7d22fSVladimir Kondratiev INIT_WORK(&wil->wmi_event_worker, wmi_event_worker); 282ed6f9dc6SVladimir Kondratiev INIT_WORK(&wil->fw_error_worker, wil_fw_error_worker); 2832be7d22fSVladimir Kondratiev 2842be7d22fSVladimir Kondratiev INIT_LIST_HEAD(&wil->pending_wmi_ev); 2852be7d22fSVladimir Kondratiev spin_lock_init(&wil->wmi_ev_lock); 2862be7d22fSVladimir Kondratiev 2872be7d22fSVladimir Kondratiev wil->wmi_wq = create_singlethread_workqueue(WIL_NAME"_wmi"); 2882be7d22fSVladimir Kondratiev if (!wil->wmi_wq) 2892be7d22fSVladimir Kondratiev return -EAGAIN; 2902be7d22fSVladimir Kondratiev 2912be7d22fSVladimir Kondratiev wil->wmi_wq_conn = create_singlethread_workqueue(WIL_NAME"_connect"); 2922be7d22fSVladimir Kondratiev if (!wil->wmi_wq_conn) { 2932be7d22fSVladimir Kondratiev destroy_workqueue(wil->wmi_wq); 2942be7d22fSVladimir Kondratiev return -EAGAIN; 2952be7d22fSVladimir Kondratiev } 2962be7d22fSVladimir Kondratiev 297fc219eedSVladimir Kondratiev wil->last_fw_recovery = jiffies; 298fc219eedSVladimir Kondratiev 2992be7d22fSVladimir Kondratiev return 0; 3002be7d22fSVladimir Kondratiev } 3012be7d22fSVladimir Kondratiev 3023b3a0162SJohannes Berg void wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid) 3032be7d22fSVladimir Kondratiev { 3042be7d22fSVladimir Kondratiev del_timer_sync(&wil->connect_timer); 3052be7d22fSVladimir Kondratiev _wil6210_disconnect(wil, bssid); 3062be7d22fSVladimir Kondratiev } 3072be7d22fSVladimir Kondratiev 3082be7d22fSVladimir Kondratiev void wil_priv_deinit(struct wil6210_priv *wil) 3092be7d22fSVladimir Kondratiev { 310047e5d74SVladimir Kondratiev del_timer_sync(&wil->scan_timer); 3112be7d22fSVladimir Kondratiev cancel_work_sync(&wil->disconnect_worker); 312ed6f9dc6SVladimir Kondratiev cancel_work_sync(&wil->fw_error_worker); 313097638a0SVladimir Kondratiev mutex_lock(&wil->mutex); 3142be7d22fSVladimir Kondratiev wil6210_disconnect(wil, NULL); 315097638a0SVladimir Kondratiev mutex_unlock(&wil->mutex); 3162be7d22fSVladimir Kondratiev wmi_event_flush(wil); 3172be7d22fSVladimir Kondratiev destroy_workqueue(wil->wmi_wq_conn); 3182be7d22fSVladimir Kondratiev destroy_workqueue(wil->wmi_wq); 3192be7d22fSVladimir Kondratiev } 3202be7d22fSVladimir Kondratiev 321151a9706SVladimir Kondratiev /* target operations */ 322151a9706SVladimir Kondratiev /* register read */ 323151a9706SVladimir Kondratiev #define R(a) ioread32(wil->csr + HOSTADDR(a)) 324151a9706SVladimir Kondratiev /* register write. wmb() to make sure it is completed */ 325151a9706SVladimir Kondratiev #define W(a, v) do { iowrite32(v, wil->csr + HOSTADDR(a)); wmb(); } while (0) 326151a9706SVladimir Kondratiev /* register set = read, OR, write */ 327151a9706SVladimir Kondratiev #define S(a, v) W(a, R(a) | v) 328151a9706SVladimir Kondratiev /* register clear = read, AND with inverted, write */ 329151a9706SVladimir Kondratiev #define C(a, v) W(a, R(a) & ~v) 330151a9706SVladimir Kondratiev 331151a9706SVladimir Kondratiev static inline void wil_halt_cpu(struct wil6210_priv *wil) 332151a9706SVladimir Kondratiev { 333151a9706SVladimir Kondratiev W(RGF_USER_USER_CPU_0, BIT_USER_USER_CPU_MAN_RST); 334151a9706SVladimir Kondratiev W(RGF_USER_MAC_CPU_0, BIT_USER_MAC_CPU_MAN_RST); 335151a9706SVladimir Kondratiev } 336151a9706SVladimir Kondratiev 337151a9706SVladimir Kondratiev static inline void wil_release_cpu(struct wil6210_priv *wil) 338151a9706SVladimir Kondratiev { 339151a9706SVladimir Kondratiev /* Start CPU */ 340151a9706SVladimir Kondratiev W(RGF_USER_USER_CPU_0, 1); 341151a9706SVladimir Kondratiev } 342151a9706SVladimir Kondratiev 343bbb2adc7SVladimir Kondratiev static int wil_target_reset(struct wil6210_priv *wil) 3442be7d22fSVladimir Kondratiev { 34598a65b59SVladimir Kondratiev int delay = 0; 346d28bcc30SVladimir Kondratiev u32 hw_state; 34736b10a72SVladimir Kondratiev u32 rev_id; 3486508281bSVladimir Kondratiev bool is_sparrow = (wil->board->board == WIL_BOARD_SPARROW); 34936b10a72SVladimir Kondratiev 3506508281bSVladimir Kondratiev wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->board->name); 3512be7d22fSVladimir Kondratiev 35217123991SVladimir Kondratiev wil->hw_version = R(RGF_USER_FW_REV_ID); 35336b10a72SVladimir Kondratiev rev_id = wil->hw_version & 0xff; 3546508281bSVladimir Kondratiev 3556508281bSVladimir Kondratiev /* Clear MAC link up */ 3566508281bSVladimir Kondratiev S(RGF_HP_CTRL, BIT(15)); 357151a9706SVladimir Kondratiev S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_HPAL_PERST_FROM_PAD); 358151a9706SVladimir Kondratiev S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_CAR_PERST_RST); 359151a9706SVladimir Kondratiev 360151a9706SVladimir Kondratiev wil_halt_cpu(wil); 361151a9706SVladimir Kondratiev C(RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_CAR_AHB_SW_SEL); /* 40 MHz */ 3622be7d22fSVladimir Kondratiev 3636508281bSVladimir Kondratiev if (is_sparrow) { 3646508281bSVladimir Kondratiev W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f); 365151a9706SVladimir Kondratiev W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0xf); 3666508281bSVladimir Kondratiev } 3676508281bSVladimir Kondratiev 3682be7d22fSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000); 3692be7d22fSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F); 370151a9706SVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, is_sparrow ? 0x000000f0 : 0x00000170); 371151a9706SVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FE00); 3722be7d22fSVladimir Kondratiev 3736508281bSVladimir Kondratiev if (is_sparrow) { 3746508281bSVladimir Kondratiev W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0); 375151a9706SVladimir Kondratiev W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0x0); 3766508281bSVladimir Kondratiev } 3776508281bSVladimir Kondratiev 3782be7d22fSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0); 3792be7d22fSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0); 3802be7d22fSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0); 3812be7d22fSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 3822be7d22fSVladimir Kondratiev 3836508281bSVladimir Kondratiev if (is_sparrow) { 3846508281bSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003); 3856508281bSVladimir Kondratiev /* reset A2 PCIE AHB */ 3866508281bSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000); 3876508281bSVladimir Kondratiev } else { 3882be7d22fSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000001); 38936b10a72SVladimir Kondratiev if (rev_id == 1) { 3906508281bSVladimir Kondratiev /* reset A1 BOTH PCIE AHB & PCIE RGF */ 3912be7d22fSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00000080); 39236b10a72SVladimir Kondratiev } else { 39317123991SVladimir Kondratiev W(RGF_PCIE_LOS_COUNTER_CTL, BIT(6) | BIT(8)); 39436b10a72SVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000); 39536b10a72SVladimir Kondratiev } 3966508281bSVladimir Kondratiev } 3976508281bSVladimir Kondratiev 3986508281bSVladimir Kondratiev /* TODO: check order here!!! Erez code is different */ 3992be7d22fSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 4002be7d22fSVladimir Kondratiev 401520d68e7SVladimir Kondratiev /* wait until device ready. typical time is 200..250 msec */ 40236b10a72SVladimir Kondratiev do { 403520d68e7SVladimir Kondratiev msleep(RST_DELAY); 404d28bcc30SVladimir Kondratiev hw_state = R(RGF_USER_HW_MACHINE_STATE); 405520d68e7SVladimir Kondratiev if (delay++ > RST_COUNT) { 406d28bcc30SVladimir Kondratiev wil_err(wil, "Reset not completed, hw_state 0x%08x\n", 407d28bcc30SVladimir Kondratiev hw_state); 408bbb2adc7SVladimir Kondratiev return -ETIME; 40936b10a72SVladimir Kondratiev } 410d28bcc30SVladimir Kondratiev } while (hw_state != HW_MACHINE_BOOT_DONE); 41136b10a72SVladimir Kondratiev 4126508281bSVladimir Kondratiev /* TODO: Erez check rev_id != 1 */ 4136508281bSVladimir Kondratiev if (!is_sparrow && (rev_id != 1)) 41417123991SVladimir Kondratiev W(RGF_PCIE_LOS_COUNTER_CTL, BIT(8)); 41536b10a72SVladimir Kondratiev 416972072aaSVladimir Kondratiev C(RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD); 417972072aaSVladimir Kondratiev 418520d68e7SVladimir Kondratiev wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY); 419bbb2adc7SVladimir Kondratiev return 0; 420151a9706SVladimir Kondratiev } 4212be7d22fSVladimir Kondratiev 42236b10a72SVladimir Kondratiev #undef R 4232be7d22fSVladimir Kondratiev #undef W 4242be7d22fSVladimir Kondratiev #undef S 425972072aaSVladimir Kondratiev #undef C 4262be7d22fSVladimir Kondratiev 4272be7d22fSVladimir Kondratiev void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r) 4282be7d22fSVladimir Kondratiev { 4292be7d22fSVladimir Kondratiev le32_to_cpus(&r->base); 4302be7d22fSVladimir Kondratiev le16_to_cpus(&r->entry_size); 4312be7d22fSVladimir Kondratiev le16_to_cpus(&r->size); 4322be7d22fSVladimir Kondratiev le32_to_cpus(&r->tail); 4332be7d22fSVladimir Kondratiev le32_to_cpus(&r->head); 4342be7d22fSVladimir Kondratiev } 4352be7d22fSVladimir Kondratiev 4362be7d22fSVladimir Kondratiev static int wil_wait_for_fw_ready(struct wil6210_priv *wil) 4372be7d22fSVladimir Kondratiev { 4382be7d22fSVladimir Kondratiev ulong to = msecs_to_jiffies(1000); 4392be7d22fSVladimir Kondratiev ulong left = wait_for_completion_timeout(&wil->wmi_ready, to); 4408fe59627SVladimir Kondratiev 4412be7d22fSVladimir Kondratiev if (0 == left) { 4422be7d22fSVladimir Kondratiev wil_err(wil, "Firmware not ready\n"); 4432be7d22fSVladimir Kondratiev return -ETIME; 4442be7d22fSVladimir Kondratiev } else { 44515e23124SVladimir Kondratiev wil_info(wil, "FW ready after %d ms. HW version 0x%08x\n", 44615e23124SVladimir Kondratiev jiffies_to_msecs(to-left), wil->hw_version); 4472be7d22fSVladimir Kondratiev } 4482be7d22fSVladimir Kondratiev return 0; 4492be7d22fSVladimir Kondratiev } 4502be7d22fSVladimir Kondratiev 4512be7d22fSVladimir Kondratiev /* 4522be7d22fSVladimir Kondratiev * We reset all the structures, and we reset the UMAC. 4532be7d22fSVladimir Kondratiev * After calling this routine, you're expected to reload 4542be7d22fSVladimir Kondratiev * the firmware. 4552be7d22fSVladimir Kondratiev */ 4562be7d22fSVladimir Kondratiev int wil_reset(struct wil6210_priv *wil) 4572be7d22fSVladimir Kondratiev { 4582be7d22fSVladimir Kondratiev int rc; 4592be7d22fSVladimir Kondratiev 460097638a0SVladimir Kondratiev WARN_ON(!mutex_is_locked(&wil->mutex)); 461097638a0SVladimir Kondratiev 462097638a0SVladimir Kondratiev cancel_work_sync(&wil->disconnect_worker); 463097638a0SVladimir Kondratiev wil6210_disconnect(wil, NULL); 464097638a0SVladimir Kondratiev 4650fef1818SVladimir Kondratiev wil->status = 0; /* prevent NAPI from being scheduled */ 4668fe59627SVladimir Kondratiev if (test_bit(wil_status_napi_en, &wil->status)) 4670fef1818SVladimir Kondratiev napi_synchronize(&wil->napi_rx); 4680fef1818SVladimir Kondratiev 469ed6f9dc6SVladimir Kondratiev if (wil->scan_request) { 470ed6f9dc6SVladimir Kondratiev wil_dbg_misc(wil, "Abort scan_request 0x%p\n", 471ed6f9dc6SVladimir Kondratiev wil->scan_request); 472047e5d74SVladimir Kondratiev del_timer_sync(&wil->scan_timer); 473ed6f9dc6SVladimir Kondratiev cfg80211_scan_done(wil->scan_request, true); 474ed6f9dc6SVladimir Kondratiev wil->scan_request = NULL; 475ed6f9dc6SVladimir Kondratiev } 476ed6f9dc6SVladimir Kondratiev 4772be7d22fSVladimir Kondratiev wil6210_disable_irq(wil); 4782be7d22fSVladimir Kondratiev 479e08b5906SVladimir Kondratiev wmi_event_flush(wil); 480e08b5906SVladimir Kondratiev 481e08b5906SVladimir Kondratiev flush_workqueue(wil->wmi_wq_conn); 482e08b5906SVladimir Kondratiev flush_workqueue(wil->wmi_wq); 483e08b5906SVladimir Kondratiev 484bbb2adc7SVladimir Kondratiev rc = wil_target_reset(wil); 4858bf6adb9SVladimir Kondratiev wil_rx_fini(wil); 486bbb2adc7SVladimir Kondratiev if (rc) 487bbb2adc7SVladimir Kondratiev return rc; 488bbb2adc7SVladimir Kondratiev 489151a9706SVladimir Kondratiev if (!no_fw_load) { 490151a9706SVladimir Kondratiev wil_info(wil, "Use firmware <%s>\n", WIL_FW_NAME); 491151a9706SVladimir Kondratiev wil_halt_cpu(wil); 492151a9706SVladimir Kondratiev /* Loading f/w from the file */ 493151a9706SVladimir Kondratiev rc = wil_request_firmware(wil, WIL_FW_NAME); 494151a9706SVladimir Kondratiev if (rc) 495151a9706SVladimir Kondratiev return rc; 496151a9706SVladimir Kondratiev 497151a9706SVladimir Kondratiev /* clear any interrupts which on-card-firmware may have set */ 498151a9706SVladimir Kondratiev wil6210_clear_irq(wil); 499151a9706SVladimir Kondratiev { /* CAF_ICR - clear and mask */ 500151a9706SVladimir Kondratiev u32 a = HOSTADDR(RGF_CAF_ICR) + 501151a9706SVladimir Kondratiev offsetof(struct RGF_ICR, ICR); 502151a9706SVladimir Kondratiev u32 m = HOSTADDR(RGF_CAF_ICR) + 503151a9706SVladimir Kondratiev offsetof(struct RGF_ICR, IMV); 504151a9706SVladimir Kondratiev u32 icr = ioread32(wil->csr + a); 505151a9706SVladimir Kondratiev 506151a9706SVladimir Kondratiev iowrite32(icr, wil->csr + a); /* W1C */ 507151a9706SVladimir Kondratiev iowrite32(~0, wil->csr + m); 508151a9706SVladimir Kondratiev wmb(); /* wait for completion */ 509151a9706SVladimir Kondratiev } 510151a9706SVladimir Kondratiev wil_release_cpu(wil); 511151a9706SVladimir Kondratiev } else { 512151a9706SVladimir Kondratiev wil_info(wil, "Use firmware from on-card flash\n"); 513151a9706SVladimir Kondratiev } 5148bf6adb9SVladimir Kondratiev 5152be7d22fSVladimir Kondratiev /* init after reset */ 5162be7d22fSVladimir Kondratiev wil->pending_connect_cid = -1; 51716735d02SWolfram Sang reinit_completion(&wil->wmi_ready); 5182be7d22fSVladimir Kondratiev 5192be7d22fSVladimir Kondratiev wil6210_enable_irq(wil); 5202be7d22fSVladimir Kondratiev 5212be7d22fSVladimir Kondratiev /* we just started MAC, wait for FW ready */ 5222be7d22fSVladimir Kondratiev rc = wil_wait_for_fw_ready(wil); 5232be7d22fSVladimir Kondratiev 5242be7d22fSVladimir Kondratiev return rc; 5252be7d22fSVladimir Kondratiev } 5262be7d22fSVladimir Kondratiev 527ed6f9dc6SVladimir Kondratiev void wil_fw_error_recovery(struct wil6210_priv *wil) 528ed6f9dc6SVladimir Kondratiev { 529ed6f9dc6SVladimir Kondratiev wil_dbg_misc(wil, "starting fw error recovery\n"); 530ed6f9dc6SVladimir Kondratiev schedule_work(&wil->fw_error_worker); 531ed6f9dc6SVladimir Kondratiev } 5322be7d22fSVladimir Kondratiev 5332be7d22fSVladimir Kondratiev void wil_link_on(struct wil6210_priv *wil) 5342be7d22fSVladimir Kondratiev { 5352be7d22fSVladimir Kondratiev struct net_device *ndev = wil_to_ndev(wil); 5362be7d22fSVladimir Kondratiev 5377743882dSVladimir Kondratiev wil_dbg_misc(wil, "%s()\n", __func__); 5382be7d22fSVladimir Kondratiev 5392be7d22fSVladimir Kondratiev netif_carrier_on(ndev); 54055f8f680SVladimir Kondratiev wil_dbg_misc(wil, "netif_tx_wake : link on\n"); 5412be7d22fSVladimir Kondratiev netif_tx_wake_all_queues(ndev); 5422be7d22fSVladimir Kondratiev } 5432be7d22fSVladimir Kondratiev 5442be7d22fSVladimir Kondratiev void wil_link_off(struct wil6210_priv *wil) 5452be7d22fSVladimir Kondratiev { 5462be7d22fSVladimir Kondratiev struct net_device *ndev = wil_to_ndev(wil); 5472be7d22fSVladimir Kondratiev 5487743882dSVladimir Kondratiev wil_dbg_misc(wil, "%s()\n", __func__); 5492be7d22fSVladimir Kondratiev 5502be7d22fSVladimir Kondratiev netif_tx_stop_all_queues(ndev); 55155f8f680SVladimir Kondratiev wil_dbg_misc(wil, "netif_tx_stop : link off\n"); 5522be7d22fSVladimir Kondratiev netif_carrier_off(ndev); 5532be7d22fSVladimir Kondratiev } 5542be7d22fSVladimir Kondratiev 5552be7d22fSVladimir Kondratiev static int __wil_up(struct wil6210_priv *wil) 5562be7d22fSVladimir Kondratiev { 5572be7d22fSVladimir Kondratiev struct net_device *ndev = wil_to_ndev(wil); 5582be7d22fSVladimir Kondratiev struct wireless_dev *wdev = wil->wdev; 5592be7d22fSVladimir Kondratiev int rc; 5602be7d22fSVladimir Kondratiev 561097638a0SVladimir Kondratiev WARN_ON(!mutex_is_locked(&wil->mutex)); 562097638a0SVladimir Kondratiev 5632be7d22fSVladimir Kondratiev rc = wil_reset(wil); 5642be7d22fSVladimir Kondratiev if (rc) 5652be7d22fSVladimir Kondratiev return rc; 5662be7d22fSVladimir Kondratiev 567e31b2562SVladimir Kondratiev /* Rx VRING. After MAC and beacon */ 568e31b2562SVladimir Kondratiev rc = wil_rx_init(wil); 569e31b2562SVladimir Kondratiev if (rc) 570e31b2562SVladimir Kondratiev return rc; 571e31b2562SVladimir Kondratiev 5722be7d22fSVladimir Kondratiev switch (wdev->iftype) { 5732be7d22fSVladimir Kondratiev case NL80211_IFTYPE_STATION: 5747743882dSVladimir Kondratiev wil_dbg_misc(wil, "type: STATION\n"); 5752be7d22fSVladimir Kondratiev ndev->type = ARPHRD_ETHER; 5762be7d22fSVladimir Kondratiev break; 5772be7d22fSVladimir Kondratiev case NL80211_IFTYPE_AP: 5787743882dSVladimir Kondratiev wil_dbg_misc(wil, "type: AP\n"); 5792be7d22fSVladimir Kondratiev ndev->type = ARPHRD_ETHER; 5802be7d22fSVladimir Kondratiev break; 5812be7d22fSVladimir Kondratiev case NL80211_IFTYPE_P2P_CLIENT: 5827743882dSVladimir Kondratiev wil_dbg_misc(wil, "type: P2P_CLIENT\n"); 5832be7d22fSVladimir Kondratiev ndev->type = ARPHRD_ETHER; 5842be7d22fSVladimir Kondratiev break; 5852be7d22fSVladimir Kondratiev case NL80211_IFTYPE_P2P_GO: 5867743882dSVladimir Kondratiev wil_dbg_misc(wil, "type: P2P_GO\n"); 5872be7d22fSVladimir Kondratiev ndev->type = ARPHRD_ETHER; 5882be7d22fSVladimir Kondratiev break; 5892be7d22fSVladimir Kondratiev case NL80211_IFTYPE_MONITOR: 5907743882dSVladimir Kondratiev wil_dbg_misc(wil, "type: Monitor\n"); 5912be7d22fSVladimir Kondratiev ndev->type = ARPHRD_IEEE80211_RADIOTAP; 5922be7d22fSVladimir Kondratiev /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */ 5932be7d22fSVladimir Kondratiev break; 5942be7d22fSVladimir Kondratiev default: 5952be7d22fSVladimir Kondratiev return -EOPNOTSUPP; 5962be7d22fSVladimir Kondratiev } 5972be7d22fSVladimir Kondratiev 5982be7d22fSVladimir Kondratiev /* MAC address - pre-requisite for other commands */ 5992be7d22fSVladimir Kondratiev wmi_set_mac_address(wil, ndev->dev_addr); 6002be7d22fSVladimir Kondratiev 6012be7d22fSVladimir Kondratiev 602e0287c4aSVladimir Kondratiev napi_enable(&wil->napi_rx); 603e0287c4aSVladimir Kondratiev napi_enable(&wil->napi_tx); 6040fef1818SVladimir Kondratiev set_bit(wil_status_napi_en, &wil->status); 605e0287c4aSVladimir Kondratiev 6062be7d22fSVladimir Kondratiev return 0; 6072be7d22fSVladimir Kondratiev } 6082be7d22fSVladimir Kondratiev 6092be7d22fSVladimir Kondratiev int wil_up(struct wil6210_priv *wil) 6102be7d22fSVladimir Kondratiev { 6112be7d22fSVladimir Kondratiev int rc; 6122be7d22fSVladimir Kondratiev 6132be7d22fSVladimir Kondratiev mutex_lock(&wil->mutex); 6142be7d22fSVladimir Kondratiev rc = __wil_up(wil); 6152be7d22fSVladimir Kondratiev mutex_unlock(&wil->mutex); 6162be7d22fSVladimir Kondratiev 6172be7d22fSVladimir Kondratiev return rc; 6182be7d22fSVladimir Kondratiev } 6192be7d22fSVladimir Kondratiev 6202be7d22fSVladimir Kondratiev static int __wil_down(struct wil6210_priv *wil) 6212be7d22fSVladimir Kondratiev { 622097638a0SVladimir Kondratiev WARN_ON(!mutex_is_locked(&wil->mutex)); 623097638a0SVladimir Kondratiev 6240fef1818SVladimir Kondratiev clear_bit(wil_status_napi_en, &wil->status); 625e0287c4aSVladimir Kondratiev napi_disable(&wil->napi_rx); 626e0287c4aSVladimir Kondratiev napi_disable(&wil->napi_tx); 627e0287c4aSVladimir Kondratiev 6282be7d22fSVladimir Kondratiev if (wil->scan_request) { 6292a91d7d0SVladimir Kondratiev wil_dbg_misc(wil, "Abort scan_request 0x%p\n", 6302a91d7d0SVladimir Kondratiev wil->scan_request); 631047e5d74SVladimir Kondratiev del_timer_sync(&wil->scan_timer); 6322be7d22fSVladimir Kondratiev cfg80211_scan_done(wil->scan_request, true); 6332be7d22fSVladimir Kondratiev wil->scan_request = NULL; 6342be7d22fSVladimir Kondratiev } 6352be7d22fSVladimir Kondratiev 6362be7d22fSVladimir Kondratiev wil6210_disconnect(wil, NULL); 6372be7d22fSVladimir Kondratiev wil_rx_fini(wil); 6382be7d22fSVladimir Kondratiev 6392be7d22fSVladimir Kondratiev return 0; 6402be7d22fSVladimir Kondratiev } 6412be7d22fSVladimir Kondratiev 6422be7d22fSVladimir Kondratiev int wil_down(struct wil6210_priv *wil) 6432be7d22fSVladimir Kondratiev { 6442be7d22fSVladimir Kondratiev int rc; 6452be7d22fSVladimir Kondratiev 6462be7d22fSVladimir Kondratiev mutex_lock(&wil->mutex); 6472be7d22fSVladimir Kondratiev rc = __wil_down(wil); 6482be7d22fSVladimir Kondratiev mutex_unlock(&wil->mutex); 6492be7d22fSVladimir Kondratiev 6502be7d22fSVladimir Kondratiev return rc; 6512be7d22fSVladimir Kondratiev } 6523df2cd36SVladimir Kondratiev 6533df2cd36SVladimir Kondratiev int wil_find_cid(struct wil6210_priv *wil, const u8 *mac) 6543df2cd36SVladimir Kondratiev { 6553df2cd36SVladimir Kondratiev int i; 6563df2cd36SVladimir Kondratiev int rc = -ENOENT; 6573df2cd36SVladimir Kondratiev 6583df2cd36SVladimir Kondratiev for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { 6593df2cd36SVladimir Kondratiev if ((wil->sta[i].status != wil_sta_unused) && 660108d1eb6SVladimir Kondratiev ether_addr_equal(wil->sta[i].addr, mac)) { 6613df2cd36SVladimir Kondratiev rc = i; 6623df2cd36SVladimir Kondratiev break; 6633df2cd36SVladimir Kondratiev } 6643df2cd36SVladimir Kondratiev } 6653df2cd36SVladimir Kondratiev 6663df2cd36SVladimir Kondratiev return rc; 6673df2cd36SVladimir Kondratiev } 668