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 28520d68e7SVladimir Kondratiev #define RST_DELAY (20) /* msec, for loop in @wil_target_reset */ 29520d68e7SVladimir Kondratiev #define RST_COUNT (1 + 1000/RST_DELAY) /* round up to be above 1 sec total */ 30520d68e7SVladimir Kondratiev 312be7d22fSVladimir Kondratiev /* 322be7d22fSVladimir Kondratiev * Due to a hardware issue, 332be7d22fSVladimir Kondratiev * one has to read/write to/from NIC in 32-bit chunks; 342be7d22fSVladimir Kondratiev * regular memcpy_fromio and siblings will 352be7d22fSVladimir Kondratiev * not work on 64-bit platform - it uses 64-bit transactions 362be7d22fSVladimir Kondratiev * 372be7d22fSVladimir Kondratiev * Force 32-bit transactions to enable NIC on 64-bit platforms 382be7d22fSVladimir Kondratiev * 392be7d22fSVladimir Kondratiev * To avoid byte swap on big endian host, __raw_{read|write}l 402be7d22fSVladimir Kondratiev * should be used - {read|write}l would swap bytes to provide 412be7d22fSVladimir Kondratiev * little endian on PCI value in host endianness. 422be7d22fSVladimir Kondratiev */ 432be7d22fSVladimir Kondratiev void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src, 442be7d22fSVladimir Kondratiev size_t count) 452be7d22fSVladimir Kondratiev { 462be7d22fSVladimir Kondratiev u32 *d = dst; 472be7d22fSVladimir Kondratiev const volatile u32 __iomem *s = src; 482be7d22fSVladimir Kondratiev 492be7d22fSVladimir Kondratiev /* size_t is unsigned, if (count%4 != 0) it will wrap */ 502be7d22fSVladimir Kondratiev for (count += 4; count > 4; count -= 4) 512be7d22fSVladimir Kondratiev *d++ = __raw_readl(s++); 522be7d22fSVladimir Kondratiev } 532be7d22fSVladimir Kondratiev 542be7d22fSVladimir Kondratiev void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src, 552be7d22fSVladimir Kondratiev size_t count) 562be7d22fSVladimir Kondratiev { 572be7d22fSVladimir Kondratiev volatile u32 __iomem *d = dst; 582be7d22fSVladimir Kondratiev const u32 *s = src; 592be7d22fSVladimir Kondratiev 602be7d22fSVladimir Kondratiev for (count += 4; count > 4; count -= 4) 612be7d22fSVladimir Kondratiev __raw_writel(*s++, d++); 622be7d22fSVladimir Kondratiev } 632be7d22fSVladimir Kondratiev 6491886b0bSVladimir Kondratiev static void wil_disconnect_cid(struct wil6210_priv *wil, int cid) 652be7d22fSVladimir Kondratiev { 6691886b0bSVladimir Kondratiev uint i; 67fc58f681SVladimir Kondratiev struct net_device *ndev = wil_to_ndev(wil); 68fc58f681SVladimir Kondratiev struct wireless_dev *wdev = wil->wdev; 69b4490f42SVladimir Kondratiev struct wil_sta_info *sta = &wil->sta[cid]; 70fc58f681SVladimir Kondratiev wil_dbg_misc(wil, "%s(CID %d, status %d)\n", __func__, cid, 71fc58f681SVladimir Kondratiev sta->status); 724d55a0a1SVladimir Kondratiev 73e58c9f70SVladimir Kondratiev sta->data_port_open = false; 744d55a0a1SVladimir Kondratiev if (sta->status != wil_sta_unused) { 754d55a0a1SVladimir Kondratiev wmi_disconnect_sta(wil, sta->addr, WLAN_REASON_DEAUTH_LEAVING); 76fc58f681SVladimir Kondratiev switch (wdev->iftype) { 77fc58f681SVladimir Kondratiev case NL80211_IFTYPE_AP: 78fc58f681SVladimir Kondratiev case NL80211_IFTYPE_P2P_GO: 79fc58f681SVladimir Kondratiev /* AP-like interface */ 80fc58f681SVladimir Kondratiev cfg80211_del_sta(ndev, sta->addr, GFP_KERNEL); 81fc58f681SVladimir Kondratiev break; 82fc58f681SVladimir Kondratiev default: 83fc58f681SVladimir Kondratiev break; 84fc58f681SVladimir Kondratiev } 854d55a0a1SVladimir Kondratiev sta->status = wil_sta_unused; 864d55a0a1SVladimir Kondratiev } 874d55a0a1SVladimir Kondratiev 88b4490f42SVladimir Kondratiev for (i = 0; i < WIL_STA_TID_NUM; i++) { 89b4490f42SVladimir Kondratiev struct wil_tid_ampdu_rx *r = sta->tid_rx[i]; 90b4490f42SVladimir Kondratiev sta->tid_rx[i] = NULL; 91b4490f42SVladimir Kondratiev wil_tid_ampdu_rx_free(wil, r); 92b4490f42SVladimir Kondratiev } 9391886b0bSVladimir Kondratiev for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) { 9491886b0bSVladimir Kondratiev if (wil->vring2cid_tid[i][0] == cid) 9591886b0bSVladimir Kondratiev wil_vring_fini_tx(wil, i); 9691886b0bSVladimir Kondratiev } 9791886b0bSVladimir Kondratiev memset(&sta->stats, 0, sizeof(sta->stats)); 98b4490f42SVladimir Kondratiev } 99b4490f42SVladimir Kondratiev 1003b3a0162SJohannes Berg static void _wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid) 10191886b0bSVladimir Kondratiev { 10291886b0bSVladimir Kondratiev int cid = -ENOENT; 10391886b0bSVladimir Kondratiev struct net_device *ndev = wil_to_ndev(wil); 10491886b0bSVladimir Kondratiev struct wireless_dev *wdev = wil->wdev; 10591886b0bSVladimir Kondratiev 10691886b0bSVladimir Kondratiev might_sleep(); 10791886b0bSVladimir Kondratiev if (bssid) { 10891886b0bSVladimir Kondratiev cid = wil_find_cid(wil, bssid); 10991886b0bSVladimir Kondratiev wil_dbg_misc(wil, "%s(%pM, CID %d)\n", __func__, bssid, cid); 11091886b0bSVladimir Kondratiev } else { 11191886b0bSVladimir Kondratiev wil_dbg_misc(wil, "%s(all)\n", __func__); 11291886b0bSVladimir Kondratiev } 11391886b0bSVladimir Kondratiev 11491886b0bSVladimir Kondratiev if (cid >= 0) /* disconnect 1 peer */ 11591886b0bSVladimir Kondratiev wil_disconnect_cid(wil, cid); 11691886b0bSVladimir Kondratiev else /* disconnect all */ 11791886b0bSVladimir Kondratiev for (cid = 0; cid < WIL6210_MAX_CID; cid++) 11891886b0bSVladimir Kondratiev wil_disconnect_cid(wil, cid); 11991886b0bSVladimir Kondratiev 12091886b0bSVladimir Kondratiev /* link state */ 12191886b0bSVladimir Kondratiev switch (wdev->iftype) { 12291886b0bSVladimir Kondratiev case NL80211_IFTYPE_STATION: 12391886b0bSVladimir Kondratiev case NL80211_IFTYPE_P2P_CLIENT: 1242be7d22fSVladimir Kondratiev wil_link_off(wil); 125b338f74eSVladimir Kondratiev if (test_bit(wil_status_fwconnected, &wil->status)) { 1262be7d22fSVladimir Kondratiev clear_bit(wil_status_fwconnected, &wil->status); 127b338f74eSVladimir Kondratiev cfg80211_disconnected(ndev, 128b338f74eSVladimir Kondratiev WLAN_STATUS_UNSPECIFIED_FAILURE, 1292be7d22fSVladimir Kondratiev NULL, 0, GFP_KERNEL); 130b338f74eSVladimir Kondratiev } else if (test_bit(wil_status_fwconnecting, &wil->status)) { 1312be7d22fSVladimir Kondratiev cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0, 1322be7d22fSVladimir Kondratiev WLAN_STATUS_UNSPECIFIED_FAILURE, 1332be7d22fSVladimir Kondratiev GFP_KERNEL); 1342be7d22fSVladimir Kondratiev } 135b338f74eSVladimir Kondratiev clear_bit(wil_status_fwconnecting, &wil->status); 13691886b0bSVladimir Kondratiev break; 13791886b0bSVladimir Kondratiev default: 13891886b0bSVladimir Kondratiev break; 13991886b0bSVladimir Kondratiev } 1402be7d22fSVladimir Kondratiev } 1412be7d22fSVladimir Kondratiev 1422be7d22fSVladimir Kondratiev static void wil_disconnect_worker(struct work_struct *work) 1432be7d22fSVladimir Kondratiev { 1442be7d22fSVladimir Kondratiev struct wil6210_priv *wil = container_of(work, 1452be7d22fSVladimir Kondratiev struct wil6210_priv, disconnect_worker); 1462be7d22fSVladimir Kondratiev 147097638a0SVladimir Kondratiev mutex_lock(&wil->mutex); 1482be7d22fSVladimir Kondratiev _wil6210_disconnect(wil, NULL); 149097638a0SVladimir Kondratiev mutex_unlock(&wil->mutex); 1502be7d22fSVladimir Kondratiev } 1512be7d22fSVladimir Kondratiev 1522be7d22fSVladimir Kondratiev static void wil_connect_timer_fn(ulong x) 1532be7d22fSVladimir Kondratiev { 1542be7d22fSVladimir Kondratiev struct wil6210_priv *wil = (void *)x; 1552be7d22fSVladimir Kondratiev 1567743882dSVladimir Kondratiev wil_dbg_misc(wil, "Connect timeout\n"); 1572be7d22fSVladimir Kondratiev 1582be7d22fSVladimir Kondratiev /* reschedule to thread context - disconnect won't 1592be7d22fSVladimir Kondratiev * run from atomic context 1602be7d22fSVladimir Kondratiev */ 1612be7d22fSVladimir Kondratiev schedule_work(&wil->disconnect_worker); 1622be7d22fSVladimir Kondratiev } 1632be7d22fSVladimir Kondratiev 164047e5d74SVladimir Kondratiev static void wil_scan_timer_fn(ulong x) 165047e5d74SVladimir Kondratiev { 166047e5d74SVladimir Kondratiev struct wil6210_priv *wil = (void *)x; 167047e5d74SVladimir Kondratiev 168047e5d74SVladimir Kondratiev clear_bit(wil_status_fwready, &wil->status); 169047e5d74SVladimir Kondratiev wil_err(wil, "Scan timeout detected, start fw error recovery\n"); 170047e5d74SVladimir Kondratiev schedule_work(&wil->fw_error_worker); 171047e5d74SVladimir Kondratiev } 172047e5d74SVladimir Kondratiev 173ed6f9dc6SVladimir Kondratiev static void wil_fw_error_worker(struct work_struct *work) 174ed6f9dc6SVladimir Kondratiev { 175ed6f9dc6SVladimir Kondratiev struct wil6210_priv *wil = container_of(work, 176ed6f9dc6SVladimir Kondratiev struct wil6210_priv, fw_error_worker); 177ed6f9dc6SVladimir Kondratiev struct wireless_dev *wdev = wil->wdev; 178ed6f9dc6SVladimir Kondratiev 179ed6f9dc6SVladimir Kondratiev wil_dbg_misc(wil, "fw error worker\n"); 180ed6f9dc6SVladimir Kondratiev 181ed6f9dc6SVladimir Kondratiev if (no_fw_recovery) 182ed6f9dc6SVladimir Kondratiev return; 183ed6f9dc6SVladimir Kondratiev 184fc219eedSVladimir Kondratiev /* increment @recovery_count if less then WIL6210_FW_RECOVERY_TO 185fc219eedSVladimir Kondratiev * passed since last recovery attempt 186fc219eedSVladimir Kondratiev */ 187fc219eedSVladimir Kondratiev if (time_is_after_jiffies(wil->last_fw_recovery + 188fc219eedSVladimir Kondratiev WIL6210_FW_RECOVERY_TO)) 189fc219eedSVladimir Kondratiev wil->recovery_count++; 190fc219eedSVladimir Kondratiev else 191fc219eedSVladimir Kondratiev wil->recovery_count = 1; /* fw was alive for a long time */ 192fc219eedSVladimir Kondratiev 193fc219eedSVladimir Kondratiev if (wil->recovery_count > WIL6210_FW_RECOVERY_RETRIES) { 194fc219eedSVladimir Kondratiev wil_err(wil, "too many recovery attempts (%d), giving up\n", 195fc219eedSVladimir Kondratiev wil->recovery_count); 196fc219eedSVladimir Kondratiev return; 197fc219eedSVladimir Kondratiev } 198fc219eedSVladimir Kondratiev 199fc219eedSVladimir Kondratiev wil->last_fw_recovery = jiffies; 200fc219eedSVladimir Kondratiev 2019c3bde56SVladimir Kondratiev mutex_lock(&wil->mutex); 202ed6f9dc6SVladimir Kondratiev switch (wdev->iftype) { 203ed6f9dc6SVladimir Kondratiev case NL80211_IFTYPE_STATION: 204ed6f9dc6SVladimir Kondratiev case NL80211_IFTYPE_P2P_CLIENT: 205ed6f9dc6SVladimir Kondratiev case NL80211_IFTYPE_MONITOR: 206fc219eedSVladimir Kondratiev wil_info(wil, "fw error recovery started (try %d)...\n", 207fc219eedSVladimir Kondratiev wil->recovery_count); 208ed6f9dc6SVladimir Kondratiev wil_reset(wil); 209ed6f9dc6SVladimir Kondratiev 210ed6f9dc6SVladimir Kondratiev /* need to re-allocate Rx ring after reset */ 211ed6f9dc6SVladimir Kondratiev wil_rx_init(wil); 212ed6f9dc6SVladimir Kondratiev break; 213ed6f9dc6SVladimir Kondratiev case NL80211_IFTYPE_AP: 214ed6f9dc6SVladimir Kondratiev case NL80211_IFTYPE_P2P_GO: 215ed6f9dc6SVladimir Kondratiev /* recovery in these modes is done by upper layers */ 216ed6f9dc6SVladimir Kondratiev break; 217ed6f9dc6SVladimir Kondratiev default: 218ed6f9dc6SVladimir Kondratiev break; 219ed6f9dc6SVladimir Kondratiev } 2209c3bde56SVladimir Kondratiev mutex_unlock(&wil->mutex); 221ed6f9dc6SVladimir Kondratiev } 222ed6f9dc6SVladimir Kondratiev 2239a177384SVladimir Kondratiev static int wil_find_free_vring(struct wil6210_priv *wil) 2249a177384SVladimir Kondratiev { 2259a177384SVladimir Kondratiev int i; 2269a177384SVladimir Kondratiev for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { 2279a177384SVladimir Kondratiev if (!wil->vring_tx[i].va) 2289a177384SVladimir Kondratiev return i; 2299a177384SVladimir Kondratiev } 2309a177384SVladimir Kondratiev return -EINVAL; 2319a177384SVladimir Kondratiev } 2329a177384SVladimir Kondratiev 233d81079f1SVladimir Kondratiev static void wil_connect_worker(struct work_struct *work) 234d81079f1SVladimir Kondratiev { 235d81079f1SVladimir Kondratiev int rc; 236d81079f1SVladimir Kondratiev struct wil6210_priv *wil = container_of(work, struct wil6210_priv, 237d81079f1SVladimir Kondratiev connect_worker); 238d81079f1SVladimir Kondratiev int cid = wil->pending_connect_cid; 2399a177384SVladimir Kondratiev int ringid = wil_find_free_vring(wil); 240d81079f1SVladimir Kondratiev 241d81079f1SVladimir Kondratiev if (cid < 0) { 242d81079f1SVladimir Kondratiev wil_err(wil, "No connection pending\n"); 243d81079f1SVladimir Kondratiev return; 244d81079f1SVladimir Kondratiev } 245d81079f1SVladimir Kondratiev 246d81079f1SVladimir Kondratiev wil_dbg_wmi(wil, "Configure for connection CID %d\n", cid); 247d81079f1SVladimir Kondratiev 2489a177384SVladimir Kondratiev rc = wil_vring_init_tx(wil, ringid, WIL6210_TX_RING_SIZE, cid, 0); 249d81079f1SVladimir Kondratiev wil->pending_connect_cid = -1; 2503df2cd36SVladimir Kondratiev if (rc == 0) { 2513df2cd36SVladimir Kondratiev wil->sta[cid].status = wil_sta_connected; 252d81079f1SVladimir Kondratiev wil_link_on(wil); 2533df2cd36SVladimir Kondratiev } else { 2543df2cd36SVladimir Kondratiev wil->sta[cid].status = wil_sta_unused; 2553df2cd36SVladimir Kondratiev } 256d81079f1SVladimir Kondratiev } 257d81079f1SVladimir Kondratiev 2582be7d22fSVladimir Kondratiev int wil_priv_init(struct wil6210_priv *wil) 2592be7d22fSVladimir Kondratiev { 2607743882dSVladimir Kondratiev wil_dbg_misc(wil, "%s()\n", __func__); 2612be7d22fSVladimir Kondratiev 2623df2cd36SVladimir Kondratiev memset(wil->sta, 0, sizeof(wil->sta)); 2633df2cd36SVladimir Kondratiev 2642be7d22fSVladimir Kondratiev mutex_init(&wil->mutex); 2652be7d22fSVladimir Kondratiev mutex_init(&wil->wmi_mutex); 2662be7d22fSVladimir Kondratiev 2672be7d22fSVladimir Kondratiev init_completion(&wil->wmi_ready); 2682be7d22fSVladimir Kondratiev 2692be7d22fSVladimir Kondratiev wil->pending_connect_cid = -1; 2702be7d22fSVladimir Kondratiev setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil); 271047e5d74SVladimir Kondratiev setup_timer(&wil->scan_timer, wil_scan_timer_fn, (ulong)wil); 2722be7d22fSVladimir Kondratiev 273d81079f1SVladimir Kondratiev INIT_WORK(&wil->connect_worker, wil_connect_worker); 2742be7d22fSVladimir Kondratiev INIT_WORK(&wil->disconnect_worker, wil_disconnect_worker); 2752be7d22fSVladimir Kondratiev INIT_WORK(&wil->wmi_event_worker, wmi_event_worker); 276ed6f9dc6SVladimir Kondratiev INIT_WORK(&wil->fw_error_worker, wil_fw_error_worker); 2772be7d22fSVladimir Kondratiev 2782be7d22fSVladimir Kondratiev INIT_LIST_HEAD(&wil->pending_wmi_ev); 2792be7d22fSVladimir Kondratiev spin_lock_init(&wil->wmi_ev_lock); 2802be7d22fSVladimir Kondratiev 2812be7d22fSVladimir Kondratiev wil->wmi_wq = create_singlethread_workqueue(WIL_NAME"_wmi"); 2822be7d22fSVladimir Kondratiev if (!wil->wmi_wq) 2832be7d22fSVladimir Kondratiev return -EAGAIN; 2842be7d22fSVladimir Kondratiev 2852be7d22fSVladimir Kondratiev wil->wmi_wq_conn = create_singlethread_workqueue(WIL_NAME"_connect"); 2862be7d22fSVladimir Kondratiev if (!wil->wmi_wq_conn) { 2872be7d22fSVladimir Kondratiev destroy_workqueue(wil->wmi_wq); 2882be7d22fSVladimir Kondratiev return -EAGAIN; 2892be7d22fSVladimir Kondratiev } 2902be7d22fSVladimir Kondratiev 291fc219eedSVladimir Kondratiev wil->last_fw_recovery = jiffies; 292fc219eedSVladimir Kondratiev 2932be7d22fSVladimir Kondratiev return 0; 2942be7d22fSVladimir Kondratiev } 2952be7d22fSVladimir Kondratiev 2963b3a0162SJohannes Berg void wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid) 2972be7d22fSVladimir Kondratiev { 2982be7d22fSVladimir Kondratiev del_timer_sync(&wil->connect_timer); 2992be7d22fSVladimir Kondratiev _wil6210_disconnect(wil, bssid); 3002be7d22fSVladimir Kondratiev } 3012be7d22fSVladimir Kondratiev 3022be7d22fSVladimir Kondratiev void wil_priv_deinit(struct wil6210_priv *wil) 3032be7d22fSVladimir Kondratiev { 304047e5d74SVladimir Kondratiev del_timer_sync(&wil->scan_timer); 3052be7d22fSVladimir Kondratiev cancel_work_sync(&wil->disconnect_worker); 306ed6f9dc6SVladimir Kondratiev cancel_work_sync(&wil->fw_error_worker); 307097638a0SVladimir Kondratiev mutex_lock(&wil->mutex); 3082be7d22fSVladimir Kondratiev wil6210_disconnect(wil, NULL); 309097638a0SVladimir Kondratiev mutex_unlock(&wil->mutex); 3102be7d22fSVladimir Kondratiev wmi_event_flush(wil); 3112be7d22fSVladimir Kondratiev destroy_workqueue(wil->wmi_wq_conn); 3122be7d22fSVladimir Kondratiev destroy_workqueue(wil->wmi_wq); 3132be7d22fSVladimir Kondratiev } 3142be7d22fSVladimir Kondratiev 315bbb2adc7SVladimir Kondratiev static int wil_target_reset(struct wil6210_priv *wil) 3162be7d22fSVladimir Kondratiev { 31798a65b59SVladimir Kondratiev int delay = 0; 318d28bcc30SVladimir Kondratiev u32 hw_state; 31936b10a72SVladimir Kondratiev u32 rev_id; 3206508281bSVladimir Kondratiev bool is_sparrow = (wil->board->board == WIL_BOARD_SPARROW); 32136b10a72SVladimir Kondratiev 3226508281bSVladimir Kondratiev wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->board->name); 3232be7d22fSVladimir Kondratiev 32436b10a72SVladimir Kondratiev /* register read */ 32536b10a72SVladimir Kondratiev #define R(a) ioread32(wil->csr + HOSTADDR(a)) 3262be7d22fSVladimir Kondratiev /* register write */ 3272be7d22fSVladimir Kondratiev #define W(a, v) iowrite32(v, wil->csr + HOSTADDR(a)) 3282be7d22fSVladimir Kondratiev /* register set = read, OR, write */ 329972072aaSVladimir Kondratiev #define S(a, v) W(a, R(a) | v) 330972072aaSVladimir Kondratiev /* register clear = read, AND with inverted, write */ 331972072aaSVladimir Kondratiev #define C(a, v) W(a, R(a) & ~v) 3322be7d22fSVladimir Kondratiev 333cc9e4a2bSVladimir Kondratiev wmb(); /* If host reorder writes here -> race in NIC */ 334cc9e4a2bSVladimir Kondratiev W(RGF_USER_MAC_CPU_0, BIT(1)); /* mac_cpu_man_rst */ 33517123991SVladimir Kondratiev wil->hw_version = R(RGF_USER_FW_REV_ID); 33636b10a72SVladimir Kondratiev rev_id = wil->hw_version & 0xff; 3376508281bSVladimir Kondratiev 3386508281bSVladimir Kondratiev /* Clear MAC link up */ 3396508281bSVladimir Kondratiev S(RGF_HP_CTRL, BIT(15)); 3402be7d22fSVladimir Kondratiev /* hpal_perst_from_pad_src_n_mask */ 3412be7d22fSVladimir Kondratiev S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT(6)); 3422be7d22fSVladimir Kondratiev /* car_perst_rst_src_n_mask */ 3432be7d22fSVladimir Kondratiev S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT(7)); 344260e6951SVladimir Kondratiev wmb(); /* order is important here */ 3452be7d22fSVladimir Kondratiev 3466508281bSVladimir Kondratiev if (is_sparrow) { 3476508281bSVladimir Kondratiev W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f); 3486508281bSVladimir Kondratiev wmb(); /* order is important here */ 3496508281bSVladimir Kondratiev } 3506508281bSVladimir Kondratiev 3512be7d22fSVladimir Kondratiev W(RGF_USER_USER_CPU_0, BIT(1)); /* user_cpu_man_rst */ 352cc9e4a2bSVladimir Kondratiev wmb(); /* If host reorder writes here -> race in NIC */ 353cc9e4a2bSVladimir Kondratiev W(RGF_USER_MAC_CPU_0, BIT(1)); /* mac_cpu_man_rst */ 354260e6951SVladimir Kondratiev wmb(); /* order is important here */ 3552be7d22fSVladimir Kondratiev 3562be7d22fSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000); 3572be7d22fSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F); 3586508281bSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, is_sparrow ? 0x000000B0 : 0x00000170); 3592be7d22fSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FC00); 360260e6951SVladimir Kondratiev wmb(); /* order is important here */ 3612be7d22fSVladimir Kondratiev 3626508281bSVladimir Kondratiev if (is_sparrow) { 3636508281bSVladimir Kondratiev W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0); 3646508281bSVladimir Kondratiev wmb(); /* order is important here */ 3656508281bSVladimir Kondratiev } 3666508281bSVladimir Kondratiev 3672be7d22fSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0); 3682be7d22fSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0); 3692be7d22fSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0); 3702be7d22fSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 371260e6951SVladimir Kondratiev wmb(); /* order is important here */ 3722be7d22fSVladimir Kondratiev 3736508281bSVladimir Kondratiev if (is_sparrow) { 3746508281bSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003); 3756508281bSVladimir Kondratiev /* reset A2 PCIE AHB */ 3766508281bSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000); 3776508281bSVladimir Kondratiev 3786508281bSVladimir Kondratiev } else { 3792be7d22fSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000001); 38036b10a72SVladimir Kondratiev if (rev_id == 1) { 3816508281bSVladimir Kondratiev /* reset A1 BOTH PCIE AHB & PCIE RGF */ 3822be7d22fSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00000080); 38336b10a72SVladimir Kondratiev } else { 38417123991SVladimir Kondratiev W(RGF_PCIE_LOS_COUNTER_CTL, BIT(6) | BIT(8)); 38536b10a72SVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000); 38636b10a72SVladimir Kondratiev } 3876508281bSVladimir Kondratiev 3886508281bSVladimir Kondratiev } 3896508281bSVladimir Kondratiev 3906508281bSVladimir Kondratiev /* TODO: check order here!!! Erez code is different */ 3912be7d22fSVladimir Kondratiev W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); 392260e6951SVladimir Kondratiev wmb(); /* order is important here */ 3932be7d22fSVladimir Kondratiev 394520d68e7SVladimir Kondratiev /* wait until device ready. typical time is 200..250 msec */ 39536b10a72SVladimir Kondratiev do { 396520d68e7SVladimir Kondratiev msleep(RST_DELAY); 397d28bcc30SVladimir Kondratiev hw_state = R(RGF_USER_HW_MACHINE_STATE); 398520d68e7SVladimir Kondratiev if (delay++ > RST_COUNT) { 399d28bcc30SVladimir Kondratiev wil_err(wil, "Reset not completed, hw_state 0x%08x\n", 400d28bcc30SVladimir Kondratiev hw_state); 401bbb2adc7SVladimir Kondratiev return -ETIME; 40236b10a72SVladimir Kondratiev } 403d28bcc30SVladimir Kondratiev } while (hw_state != HW_MACHINE_BOOT_DONE); 40436b10a72SVladimir Kondratiev 4056508281bSVladimir Kondratiev /* TODO: Erez check rev_id != 1 */ 4066508281bSVladimir Kondratiev if (!is_sparrow && (rev_id != 1)) 40717123991SVladimir Kondratiev W(RGF_PCIE_LOS_COUNTER_CTL, BIT(8)); 40836b10a72SVladimir Kondratiev 409972072aaSVladimir Kondratiev C(RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD); 410260e6951SVladimir Kondratiev wmb(); /* order is important here */ 411972072aaSVladimir Kondratiev 412520d68e7SVladimir Kondratiev wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY); 413bbb2adc7SVladimir Kondratiev return 0; 4142be7d22fSVladimir Kondratiev 41536b10a72SVladimir Kondratiev #undef R 4162be7d22fSVladimir Kondratiev #undef W 4172be7d22fSVladimir Kondratiev #undef S 418972072aaSVladimir Kondratiev #undef C 4192be7d22fSVladimir Kondratiev } 4202be7d22fSVladimir Kondratiev 4212be7d22fSVladimir Kondratiev void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r) 4222be7d22fSVladimir Kondratiev { 4232be7d22fSVladimir Kondratiev le32_to_cpus(&r->base); 4242be7d22fSVladimir Kondratiev le16_to_cpus(&r->entry_size); 4252be7d22fSVladimir Kondratiev le16_to_cpus(&r->size); 4262be7d22fSVladimir Kondratiev le32_to_cpus(&r->tail); 4272be7d22fSVladimir Kondratiev le32_to_cpus(&r->head); 4282be7d22fSVladimir Kondratiev } 4292be7d22fSVladimir Kondratiev 4302be7d22fSVladimir Kondratiev static int wil_wait_for_fw_ready(struct wil6210_priv *wil) 4312be7d22fSVladimir Kondratiev { 4322be7d22fSVladimir Kondratiev ulong to = msecs_to_jiffies(1000); 4332be7d22fSVladimir Kondratiev ulong left = wait_for_completion_timeout(&wil->wmi_ready, to); 4342be7d22fSVladimir Kondratiev if (0 == left) { 4352be7d22fSVladimir Kondratiev wil_err(wil, "Firmware not ready\n"); 4362be7d22fSVladimir Kondratiev return -ETIME; 4372be7d22fSVladimir Kondratiev } else { 43815e23124SVladimir Kondratiev wil_info(wil, "FW ready after %d ms. HW version 0x%08x\n", 43915e23124SVladimir Kondratiev jiffies_to_msecs(to-left), wil->hw_version); 4402be7d22fSVladimir Kondratiev } 4412be7d22fSVladimir Kondratiev return 0; 4422be7d22fSVladimir Kondratiev } 4432be7d22fSVladimir Kondratiev 4442be7d22fSVladimir Kondratiev /* 4452be7d22fSVladimir Kondratiev * We reset all the structures, and we reset the UMAC. 4462be7d22fSVladimir Kondratiev * After calling this routine, you're expected to reload 4472be7d22fSVladimir Kondratiev * the firmware. 4482be7d22fSVladimir Kondratiev */ 4492be7d22fSVladimir Kondratiev int wil_reset(struct wil6210_priv *wil) 4502be7d22fSVladimir Kondratiev { 4512be7d22fSVladimir Kondratiev int rc; 4522be7d22fSVladimir Kondratiev 453097638a0SVladimir Kondratiev WARN_ON(!mutex_is_locked(&wil->mutex)); 454097638a0SVladimir Kondratiev 455097638a0SVladimir Kondratiev cancel_work_sync(&wil->disconnect_worker); 456097638a0SVladimir Kondratiev wil6210_disconnect(wil, NULL); 457097638a0SVladimir Kondratiev 4580fef1818SVladimir Kondratiev wil->status = 0; /* prevent NAPI from being scheduled */ 4590fef1818SVladimir Kondratiev if (test_bit(wil_status_napi_en, &wil->status)) { 4600fef1818SVladimir Kondratiev napi_synchronize(&wil->napi_rx); 4610fef1818SVladimir Kondratiev } 4620fef1818SVladimir Kondratiev 463ed6f9dc6SVladimir Kondratiev if (wil->scan_request) { 464ed6f9dc6SVladimir Kondratiev wil_dbg_misc(wil, "Abort scan_request 0x%p\n", 465ed6f9dc6SVladimir Kondratiev wil->scan_request); 466047e5d74SVladimir Kondratiev del_timer_sync(&wil->scan_timer); 467ed6f9dc6SVladimir Kondratiev cfg80211_scan_done(wil->scan_request, true); 468ed6f9dc6SVladimir Kondratiev wil->scan_request = NULL; 469ed6f9dc6SVladimir Kondratiev } 470ed6f9dc6SVladimir Kondratiev 4712be7d22fSVladimir Kondratiev wil6210_disable_irq(wil); 4722be7d22fSVladimir Kondratiev 473e08b5906SVladimir Kondratiev wmi_event_flush(wil); 474e08b5906SVladimir Kondratiev 475e08b5906SVladimir Kondratiev flush_workqueue(wil->wmi_wq_conn); 476e08b5906SVladimir Kondratiev flush_workqueue(wil->wmi_wq); 477e08b5906SVladimir Kondratiev 478bbb2adc7SVladimir Kondratiev rc = wil_target_reset(wil); 4798bf6adb9SVladimir Kondratiev wil_rx_fini(wil); 480bbb2adc7SVladimir Kondratiev if (rc) 481bbb2adc7SVladimir Kondratiev return rc; 482bbb2adc7SVladimir Kondratiev 4838bf6adb9SVladimir Kondratiev 4842be7d22fSVladimir Kondratiev /* init after reset */ 4852be7d22fSVladimir Kondratiev wil->pending_connect_cid = -1; 48616735d02SWolfram Sang reinit_completion(&wil->wmi_ready); 4872be7d22fSVladimir Kondratiev 4882be7d22fSVladimir Kondratiev /* TODO: release MAC reset */ 4892be7d22fSVladimir Kondratiev wil6210_enable_irq(wil); 4902be7d22fSVladimir Kondratiev 4912be7d22fSVladimir Kondratiev /* we just started MAC, wait for FW ready */ 4922be7d22fSVladimir Kondratiev rc = wil_wait_for_fw_ready(wil); 4932be7d22fSVladimir Kondratiev 4942be7d22fSVladimir Kondratiev return rc; 4952be7d22fSVladimir Kondratiev } 4962be7d22fSVladimir Kondratiev 497ed6f9dc6SVladimir Kondratiev void wil_fw_error_recovery(struct wil6210_priv *wil) 498ed6f9dc6SVladimir Kondratiev { 499ed6f9dc6SVladimir Kondratiev wil_dbg_misc(wil, "starting fw error recovery\n"); 500ed6f9dc6SVladimir Kondratiev schedule_work(&wil->fw_error_worker); 501ed6f9dc6SVladimir Kondratiev } 5022be7d22fSVladimir Kondratiev 5032be7d22fSVladimir Kondratiev void wil_link_on(struct wil6210_priv *wil) 5042be7d22fSVladimir Kondratiev { 5052be7d22fSVladimir Kondratiev struct net_device *ndev = wil_to_ndev(wil); 5062be7d22fSVladimir Kondratiev 5077743882dSVladimir Kondratiev wil_dbg_misc(wil, "%s()\n", __func__); 5082be7d22fSVladimir Kondratiev 5092be7d22fSVladimir Kondratiev netif_carrier_on(ndev); 51055f8f680SVladimir Kondratiev wil_dbg_misc(wil, "netif_tx_wake : link on\n"); 5112be7d22fSVladimir Kondratiev netif_tx_wake_all_queues(ndev); 5122be7d22fSVladimir Kondratiev } 5132be7d22fSVladimir Kondratiev 5142be7d22fSVladimir Kondratiev void wil_link_off(struct wil6210_priv *wil) 5152be7d22fSVladimir Kondratiev { 5162be7d22fSVladimir Kondratiev struct net_device *ndev = wil_to_ndev(wil); 5172be7d22fSVladimir Kondratiev 5187743882dSVladimir Kondratiev wil_dbg_misc(wil, "%s()\n", __func__); 5192be7d22fSVladimir Kondratiev 5202be7d22fSVladimir Kondratiev netif_tx_stop_all_queues(ndev); 52155f8f680SVladimir Kondratiev wil_dbg_misc(wil, "netif_tx_stop : link off\n"); 5222be7d22fSVladimir Kondratiev netif_carrier_off(ndev); 5232be7d22fSVladimir Kondratiev } 5242be7d22fSVladimir Kondratiev 5252be7d22fSVladimir Kondratiev static int __wil_up(struct wil6210_priv *wil) 5262be7d22fSVladimir Kondratiev { 5272be7d22fSVladimir Kondratiev struct net_device *ndev = wil_to_ndev(wil); 5282be7d22fSVladimir Kondratiev struct wireless_dev *wdev = wil->wdev; 5292be7d22fSVladimir Kondratiev int rc; 5302be7d22fSVladimir Kondratiev 531097638a0SVladimir Kondratiev WARN_ON(!mutex_is_locked(&wil->mutex)); 532097638a0SVladimir Kondratiev 5332be7d22fSVladimir Kondratiev rc = wil_reset(wil); 5342be7d22fSVladimir Kondratiev if (rc) 5352be7d22fSVladimir Kondratiev return rc; 5362be7d22fSVladimir Kondratiev 537e31b2562SVladimir Kondratiev /* Rx VRING. After MAC and beacon */ 538e31b2562SVladimir Kondratiev rc = wil_rx_init(wil); 539e31b2562SVladimir Kondratiev if (rc) 540e31b2562SVladimir Kondratiev return rc; 541e31b2562SVladimir Kondratiev 5422be7d22fSVladimir Kondratiev switch (wdev->iftype) { 5432be7d22fSVladimir Kondratiev case NL80211_IFTYPE_STATION: 5447743882dSVladimir Kondratiev wil_dbg_misc(wil, "type: STATION\n"); 5452be7d22fSVladimir Kondratiev ndev->type = ARPHRD_ETHER; 5462be7d22fSVladimir Kondratiev break; 5472be7d22fSVladimir Kondratiev case NL80211_IFTYPE_AP: 5487743882dSVladimir Kondratiev wil_dbg_misc(wil, "type: AP\n"); 5492be7d22fSVladimir Kondratiev ndev->type = ARPHRD_ETHER; 5502be7d22fSVladimir Kondratiev break; 5512be7d22fSVladimir Kondratiev case NL80211_IFTYPE_P2P_CLIENT: 5527743882dSVladimir Kondratiev wil_dbg_misc(wil, "type: P2P_CLIENT\n"); 5532be7d22fSVladimir Kondratiev ndev->type = ARPHRD_ETHER; 5542be7d22fSVladimir Kondratiev break; 5552be7d22fSVladimir Kondratiev case NL80211_IFTYPE_P2P_GO: 5567743882dSVladimir Kondratiev wil_dbg_misc(wil, "type: P2P_GO\n"); 5572be7d22fSVladimir Kondratiev ndev->type = ARPHRD_ETHER; 5582be7d22fSVladimir Kondratiev break; 5592be7d22fSVladimir Kondratiev case NL80211_IFTYPE_MONITOR: 5607743882dSVladimir Kondratiev wil_dbg_misc(wil, "type: Monitor\n"); 5612be7d22fSVladimir Kondratiev ndev->type = ARPHRD_IEEE80211_RADIOTAP; 5622be7d22fSVladimir Kondratiev /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */ 5632be7d22fSVladimir Kondratiev break; 5642be7d22fSVladimir Kondratiev default: 5652be7d22fSVladimir Kondratiev return -EOPNOTSUPP; 5662be7d22fSVladimir Kondratiev } 5672be7d22fSVladimir Kondratiev 5682be7d22fSVladimir Kondratiev /* MAC address - pre-requisite for other commands */ 5692be7d22fSVladimir Kondratiev wmi_set_mac_address(wil, ndev->dev_addr); 5702be7d22fSVladimir Kondratiev 5712be7d22fSVladimir Kondratiev 572e0287c4aSVladimir Kondratiev napi_enable(&wil->napi_rx); 573e0287c4aSVladimir Kondratiev napi_enable(&wil->napi_tx); 5740fef1818SVladimir Kondratiev set_bit(wil_status_napi_en, &wil->status); 575e0287c4aSVladimir Kondratiev 5762be7d22fSVladimir Kondratiev return 0; 5772be7d22fSVladimir Kondratiev } 5782be7d22fSVladimir Kondratiev 5792be7d22fSVladimir Kondratiev int wil_up(struct wil6210_priv *wil) 5802be7d22fSVladimir Kondratiev { 5812be7d22fSVladimir Kondratiev int rc; 5822be7d22fSVladimir Kondratiev 5832be7d22fSVladimir Kondratiev mutex_lock(&wil->mutex); 5842be7d22fSVladimir Kondratiev rc = __wil_up(wil); 5852be7d22fSVladimir Kondratiev mutex_unlock(&wil->mutex); 5862be7d22fSVladimir Kondratiev 5872be7d22fSVladimir Kondratiev return rc; 5882be7d22fSVladimir Kondratiev } 5892be7d22fSVladimir Kondratiev 5902be7d22fSVladimir Kondratiev static int __wil_down(struct wil6210_priv *wil) 5912be7d22fSVladimir Kondratiev { 592097638a0SVladimir Kondratiev WARN_ON(!mutex_is_locked(&wil->mutex)); 593097638a0SVladimir Kondratiev 5940fef1818SVladimir Kondratiev clear_bit(wil_status_napi_en, &wil->status); 595e0287c4aSVladimir Kondratiev napi_disable(&wil->napi_rx); 596e0287c4aSVladimir Kondratiev napi_disable(&wil->napi_tx); 597e0287c4aSVladimir Kondratiev 5982be7d22fSVladimir Kondratiev if (wil->scan_request) { 5992a91d7d0SVladimir Kondratiev wil_dbg_misc(wil, "Abort scan_request 0x%p\n", 6002a91d7d0SVladimir Kondratiev wil->scan_request); 601047e5d74SVladimir Kondratiev del_timer_sync(&wil->scan_timer); 6022be7d22fSVladimir Kondratiev cfg80211_scan_done(wil->scan_request, true); 6032be7d22fSVladimir Kondratiev wil->scan_request = NULL; 6042be7d22fSVladimir Kondratiev } 6052be7d22fSVladimir Kondratiev 6062be7d22fSVladimir Kondratiev wil6210_disconnect(wil, NULL); 6072be7d22fSVladimir Kondratiev wil_rx_fini(wil); 6082be7d22fSVladimir Kondratiev 6092be7d22fSVladimir Kondratiev return 0; 6102be7d22fSVladimir Kondratiev } 6112be7d22fSVladimir Kondratiev 6122be7d22fSVladimir Kondratiev int wil_down(struct wil6210_priv *wil) 6132be7d22fSVladimir Kondratiev { 6142be7d22fSVladimir Kondratiev int rc; 6152be7d22fSVladimir Kondratiev 6162be7d22fSVladimir Kondratiev mutex_lock(&wil->mutex); 6172be7d22fSVladimir Kondratiev rc = __wil_down(wil); 6182be7d22fSVladimir Kondratiev mutex_unlock(&wil->mutex); 6192be7d22fSVladimir Kondratiev 6202be7d22fSVladimir Kondratiev return rc; 6212be7d22fSVladimir Kondratiev } 6223df2cd36SVladimir Kondratiev 6233df2cd36SVladimir Kondratiev int wil_find_cid(struct wil6210_priv *wil, const u8 *mac) 6243df2cd36SVladimir Kondratiev { 6253df2cd36SVladimir Kondratiev int i; 6263df2cd36SVladimir Kondratiev int rc = -ENOENT; 6273df2cd36SVladimir Kondratiev 6283df2cd36SVladimir Kondratiev for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { 6293df2cd36SVladimir Kondratiev if ((wil->sta[i].status != wil_sta_unused) && 630108d1eb6SVladimir Kondratiev ether_addr_equal(wil->sta[i].addr, mac)) { 6313df2cd36SVladimir Kondratiev rc = i; 6323df2cd36SVladimir Kondratiev break; 6333df2cd36SVladimir Kondratiev } 6343df2cd36SVladimir Kondratiev } 6353df2cd36SVladimir Kondratiev 6363df2cd36SVladimir Kondratiev return rc; 6373df2cd36SVladimir Kondratiev } 638