| /* |
| * Copyright (c) 2012-2015 Qualcomm Atheros, Inc. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #include <linux/moduleparam.h> |
| #include <linux/if_arp.h> |
| #include <linux/etherdevice.h> |
| |
| #include "wil6210.h" |
| #include "txrx.h" |
| #include "wmi.h" |
| |
| #define WAIT_FOR_DISCONNECT_TIMEOUT_MS 2000 |
| #define WAIT_FOR_DISCONNECT_INTERVAL_MS 10 |
| |
| bool debug_fw; /* = false; */ |
| module_param(debug_fw, bool, S_IRUGO); |
| MODULE_PARM_DESC(debug_fw, " do not perform card reset. For FW debug"); |
| |
| bool no_fw_recovery; |
| module_param(no_fw_recovery, bool, S_IRUGO | S_IWUSR); |
| MODULE_PARM_DESC(no_fw_recovery, " disable automatic FW error recovery"); |
| |
| /* 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, S_IRUGO); |
| 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 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, S_IRUGO); |
| MODULE_PARM_DESC(mtu_max, " Max MTU value."); |
| |
| static uint rx_ring_order = WIL_RX_RING_SIZE_ORDER_DEFAULT; |
| 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 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, S_IRUGO); |
| MODULE_PARM_DESC(rx_ring_order, " Rx ring order; size = 1 << order"); |
| module_param_cb(tx_ring_order, &ring_order_ops, &tx_ring_order, S_IRUGO); |
| MODULE_PARM_DESC(tx_ring_order, " Tx ring order; size = 1 << order"); |
| module_param_cb(bcast_ring_order, &ring_order_ops, &bcast_ring_order, S_IRUGO); |
| MODULE_PARM_DESC(bcast_ring_order, " Bcast ring order; size = 1 << order"); |
| |
| #define RST_DELAY (20) /* msec, for loop in @wil_target_reset */ |
| #define RST_COUNT (1 + 1000/RST_DELAY) /* round up to be above 1 sec total */ |
| |
| /* |
| * Due to a hardware issue, |
| * one has to read/write to/from NIC in 32-bit chunks; |
| * regular memcpy_fromio and siblings will |
| * not work on 64-bit platform - it uses 64-bit transactions |
| * |
| * Force 32-bit transactions to enable NIC on 64-bit platforms |
| * |
| * To avoid byte swap on big endian host, __raw_{read|write}l |
| * should be used - {read|write}l would swap bytes to provide |
| * little endian on PCI value in host endianness. |
| */ |
| void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src, |
| size_t count) |
| { |
| u32 *d = dst; |
| const volatile u32 __iomem *s = src; |
| |
| /* size_t is unsigned, if (count%4 != 0) it will wrap */ |
| for (count += 4; count > 4; count -= 4) |
| *d++ = __raw_readl(s++); |
| } |
| |
| void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src, |
| size_t count) |
| { |
| volatile u32 __iomem *d = dst; |
| const u32 *s = src; |
| |
| for (count += 4; count > 4; count -= 4) |
| __raw_writel(*s++, d++); |
| } |
| |
| static void wil_disconnect_cid(struct wil6210_priv *wil, int cid, |
| u16 reason_code, bool from_event) |
| __acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock) |
| { |
| uint i; |
| struct net_device *ndev = wil_to_ndev(wil); |
| struct wireless_dev *wdev = wil->wdev; |
| struct wil_sta_info *sta = &wil->sta[cid]; |
| |
| might_sleep(); |
| wil_dbg_misc(wil, "%s(CID %d, status %d)\n", __func__, cid, |
| sta->status); |
| |
| if (sta->status != wil_sta_unused) { |
| if (!from_event) |
| wmi_disconnect_sta(wil, sta->addr, reason_code); |
| |
| switch (wdev->iftype) { |
| case NL80211_IFTYPE_AP: |
| case NL80211_IFTYPE_P2P_GO: |
| /* AP-like interface */ |
| cfg80211_del_sta(ndev, sta->addr, GFP_KERNEL); |
| break; |
| default: |
| break; |
| } |
| sta->status = wil_sta_unused; |
| } |
| |
| for (i = 0; i < WIL_STA_TID_NUM; i++) { |
| struct wil_tid_ampdu_rx *r; |
| |
| 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); |
| } |
| for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) { |
| if (wil->vring2cid_tid[i][0] == cid) |
| wil_vring_fini_tx(wil, i); |
| } |
| memset(&sta->stats, 0, sizeof(sta->stats)); |
| } |
| |
| static void _wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, |
| u16 reason_code, bool from_event) |
| { |
| int cid = -ENOENT; |
| struct net_device *ndev = wil_to_ndev(wil); |
| struct wireless_dev *wdev = wil->wdev; |
| |
| might_sleep(); |
| wil_dbg_misc(wil, "%s(bssid=%pM, reason=%d, ev%s)\n", __func__, bssid, |
| reason_code, from_event ? "+" : "-"); |
| |
| /* Cases are: |
| * - disconnect single STA, still connected |
| * - disconnect single STA, already disconnected |
| * - disconnect all |
| * |
| * For "disconnect all", there are 2 options: |
| * - bssid == NULL |
| * - bssid is our MAC address |
| */ |
| if (bssid && memcmp(ndev->dev_addr, bssid, ETH_ALEN)) { |
| cid = wil_find_cid(wil, bssid); |
| wil_dbg_misc(wil, "Disconnect %pM, CID=%d, reason=%d\n", |
| bssid, cid, reason_code); |
| if (cid >= 0) /* disconnect 1 peer */ |
| wil_disconnect_cid(wil, cid, reason_code, from_event); |
| } else { /* all */ |
| wil_dbg_misc(wil, "Disconnect all\n"); |
| for (cid = 0; cid < WIL6210_MAX_CID; cid++) |
| wil_disconnect_cid(wil, cid, reason_code, from_event); |
| } |
| |
| /* link state */ |
| switch (wdev->iftype) { |
| case NL80211_IFTYPE_STATION: |
| case NL80211_IFTYPE_P2P_CLIENT: |
| wil_bcast_fini(wil); |
| netif_tx_stop_all_queues(ndev); |
| netif_carrier_off(ndev); |
| |
| if (test_bit(wil_status_fwconnected, wil->status)) { |
| clear_bit(wil_status_fwconnected, wil->status); |
| cfg80211_disconnected(ndev, reason_code, |
| NULL, 0, GFP_KERNEL); |
| } else if (test_bit(wil_status_fwconnecting, wil->status)) { |
| cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0, |
| WLAN_STATUS_UNSPECIFIED_FAILURE, |
| GFP_KERNEL); |
| } |
| clear_bit(wil_status_fwconnecting, wil->status); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| static void wil_disconnect_worker(struct work_struct *work) |
| { |
| struct wil6210_priv *wil = container_of(work, |
| struct wil6210_priv, disconnect_worker); |
| |
| mutex_lock(&wil->mutex); |
| _wil6210_disconnect(wil, NULL, WLAN_REASON_UNSPECIFIED, false); |
| mutex_unlock(&wil->mutex); |
| } |
| |
| static void wil_connect_timer_fn(ulong x) |
| { |
| struct wil6210_priv *wil = (void *)x; |
| |
| wil_dbg_misc(wil, "Connect timeout\n"); |
| |
| /* reschedule to thread context - disconnect won't |
| * run from atomic context |
| */ |
| schedule_work(&wil->disconnect_worker); |
| } |
| |
| static void wil_scan_timer_fn(ulong x) |
| { |
| struct wil6210_priv *wil = (void *)x; |
| |
| clear_bit(wil_status_fwready, wil->status); |
| wil_err(wil, "Scan timeout detected, start fw error recovery\n"); |
| wil->recovery_state = fw_recovery_pending; |
| schedule_work(&wil->fw_error_worker); |
| } |
| |
| static int wil_wait_for_recovery(struct wil6210_priv *wil) |
| { |
| if (wait_event_interruptible(wil->wq, wil->recovery_state != |
| fw_recovery_pending)) { |
| wil_err(wil, "Interrupt, canceling recovery\n"); |
| return -ERESTARTSYS; |
| } |
| if (wil->recovery_state != fw_recovery_running) { |
| wil_info(wil, "Recovery cancelled\n"); |
| return -EINTR; |
| } |
| wil_info(wil, "Proceed with recovery\n"); |
| return 0; |
| } |
| |
| void wil_set_recovery_state(struct wil6210_priv *wil, int state) |
| { |
| wil_dbg_misc(wil, "%s(%d -> %d)\n", __func__, |
| wil->recovery_state, state); |
| |
| wil->recovery_state = state; |
| wake_up_interruptible(&wil->wq); |
| } |
| |
| static void wil_fw_error_worker(struct work_struct *work) |
| { |
| struct wil6210_priv *wil = container_of(work, struct wil6210_priv, |
| fw_error_worker); |
| struct wireless_dev *wdev = wil->wdev; |
| |
| wil_dbg_misc(wil, "fw error worker\n"); |
| |
| if (!netif_running(wil_to_ndev(wil))) { |
| wil_info(wil, "No recovery - interface is down\n"); |
| return; |
| } |
| |
| /* increment @recovery_count if less then WIL6210_FW_RECOVERY_TO |
| * passed since last recovery attempt |
| */ |
| if (time_is_after_jiffies(wil->last_fw_recovery + |
| WIL6210_FW_RECOVERY_TO)) |
| wil->recovery_count++; |
| else |
| wil->recovery_count = 1; /* fw was alive for a long time */ |
| |
| if (wil->recovery_count > WIL6210_FW_RECOVERY_RETRIES) { |
| wil_err(wil, "too many recovery attempts (%d), giving up\n", |
| wil->recovery_count); |
| return; |
| } |
| |
| wil->last_fw_recovery = jiffies; |
| |
| mutex_lock(&wil->mutex); |
| switch (wdev->iftype) { |
| case NL80211_IFTYPE_STATION: |
| case NL80211_IFTYPE_P2P_CLIENT: |
| case NL80211_IFTYPE_MONITOR: |
| wil_info(wil, "fw error recovery requested (try %d)...\n", |
| wil->recovery_count); |
| if (!no_fw_recovery) |
| wil->recovery_state = fw_recovery_running; |
| if (0 != wil_wait_for_recovery(wil)) |
| break; |
| |
| __wil_down(wil); |
| __wil_up(wil); |
| break; |
| case NL80211_IFTYPE_AP: |
| case NL80211_IFTYPE_P2P_GO: |
| wil_info(wil, "No recovery for AP-like interface\n"); |
| /* recovery in these modes is done by upper layers */ |
| break; |
| default: |
| wil_err(wil, "No recovery - unknown interface type %d\n", |
| wdev->iftype); |
| break; |
| } |
| mutex_unlock(&wil->mutex); |
| } |
| |
| static int wil_find_free_vring(struct wil6210_priv *wil) |
| { |
| int i; |
| |
| for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { |
| if (!wil->vring_tx[i].va) |
| return i; |
| } |
| return -EINVAL; |
| } |
| |
| int wil_bcast_init(struct wil6210_priv *wil) |
| { |
| int ri = wil->bcast_vring, rc; |
| |
| if ((ri >= 0) && wil->vring_tx[ri].va) |
| return 0; |
| |
| ri = wil_find_free_vring(wil); |
| if (ri < 0) |
| return ri; |
| |
| wil->bcast_vring = ri; |
| rc = wil_vring_init_bcast(wil, ri, 1 << bcast_ring_order); |
| if (rc) |
| wil->bcast_vring = -1; |
| |
| return rc; |
| } |
| |
| void wil_bcast_fini(struct wil6210_priv *wil) |
| { |
| int ri = wil->bcast_vring; |
| |
| if (ri < 0) |
| return; |
| |
| wil->bcast_vring = -1; |
| wil_vring_fini_tx(wil, ri); |
| } |
| |
| static void wil_connect_worker(struct work_struct *work) |
| { |
| int rc; |
| struct wil6210_priv *wil = container_of(work, struct wil6210_priv, |
| connect_worker); |
| struct net_device *ndev = wil_to_ndev(wil); |
| |
| int cid = wil->pending_connect_cid; |
| int ringid = wil_find_free_vring(wil); |
| |
| if (cid < 0) { |
| wil_err(wil, "No connection pending\n"); |
| return; |
| } |
| |
| wil_dbg_wmi(wil, "Configure for connection CID %d\n", cid); |
| |
| rc = wil_vring_init_tx(wil, ringid, 1 << tx_ring_order, cid, 0); |
| wil->pending_connect_cid = -1; |
| if (rc == 0) { |
| wil->sta[cid].status = wil_sta_connected; |
| netif_tx_wake_all_queues(ndev); |
| } else { |
| wil->sta[cid].status = wil_sta_unused; |
| } |
| } |
| |
| int wil_priv_init(struct wil6210_priv *wil) |
| { |
| uint i; |
| |
| wil_dbg_misc(wil, "%s()\n", __func__); |
| |
| memset(wil->sta, 0, sizeof(wil->sta)); |
| for (i = 0; i < WIL6210_MAX_CID; i++) |
| spin_lock_init(&wil->sta[i].tid_rx_lock); |
| |
| mutex_init(&wil->mutex); |
| mutex_init(&wil->wmi_mutex); |
| mutex_init(&wil->back_rx_mutex); |
| mutex_init(&wil->back_tx_mutex); |
| mutex_init(&wil->probe_client_mutex); |
| |
| init_completion(&wil->wmi_ready); |
| init_completion(&wil->wmi_call); |
| |
| wil->pending_connect_cid = -1; |
| wil->bcast_vring = -1; |
| setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil); |
| setup_timer(&wil->scan_timer, wil_scan_timer_fn, (ulong)wil); |
| |
| INIT_WORK(&wil->connect_worker, wil_connect_worker); |
| INIT_WORK(&wil->disconnect_worker, wil_disconnect_worker); |
| INIT_WORK(&wil->wmi_event_worker, wmi_event_worker); |
| INIT_WORK(&wil->fw_error_worker, wil_fw_error_worker); |
| INIT_WORK(&wil->back_rx_worker, wil_back_rx_worker); |
| INIT_WORK(&wil->back_tx_worker, wil_back_tx_worker); |
| INIT_WORK(&wil->probe_client_worker, wil_probe_client_worker); |
| |
| INIT_LIST_HEAD(&wil->pending_wmi_ev); |
| INIT_LIST_HEAD(&wil->back_rx_pending); |
| INIT_LIST_HEAD(&wil->back_tx_pending); |
| INIT_LIST_HEAD(&wil->probe_client_pending); |
| spin_lock_init(&wil->wmi_ev_lock); |
| init_waitqueue_head(&wil->wq); |
| |
| wil->wmi_wq = create_singlethread_workqueue(WIL_NAME "_wmi"); |
| if (!wil->wmi_wq) |
| return -EAGAIN; |
| |
| wil->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; |
| return 0; |
| |
| out_wmi_wq: |
| destroy_workqueue(wil->wmi_wq); |
| |
| return -EAGAIN; |
| } |
| |
| /** |
| * wil6210_disconnect - disconnect one connection |
| * @wil: driver context |
| * @bssid: peer to disconnect, NULL to disconnect all |
| * @reason_code: Reason code for the Disassociation frame |
| * @from_event: whether is invoked from FW event handler |
| * |
| * Disconnect and release associated resources. If invoked not from the |
| * FW event handler, issue WMI command(s) to trigger MAC disconnect. |
| */ |
| void wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid, |
| u16 reason_code, bool from_event) |
| { |
| wil_dbg_misc(wil, "%s()\n", __func__); |
| |
| del_timer_sync(&wil->connect_timer); |
| _wil6210_disconnect(wil, bssid, reason_code, from_event); |
| } |
| |
| void wil_priv_deinit(struct wil6210_priv *wil) |
| { |
| wil_dbg_misc(wil, "%s()\n", __func__); |
| |
| wil_set_recovery_state(wil, fw_recovery_idle); |
| del_timer_sync(&wil->scan_timer); |
| cancel_work_sync(&wil->disconnect_worker); |
| cancel_work_sync(&wil->fw_error_worker); |
| mutex_lock(&wil->mutex); |
| wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); |
| mutex_unlock(&wil->mutex); |
| wmi_event_flush(wil); |
| wil_back_rx_flush(wil); |
| cancel_work_sync(&wil->back_rx_worker); |
| wil_back_tx_flush(wil); |
| cancel_work_sync(&wil->back_tx_worker); |
| wil_probe_client_flush(wil); |
| cancel_work_sync(&wil->probe_client_worker); |
| destroy_workqueue(wil->wq_service); |
| destroy_workqueue(wil->wmi_wq); |
| } |
| |
| /* target operations */ |
| /* register read */ |
| #define R(a) ioread32(wil->csr + HOSTADDR(a)) |
| /* register write. wmb() to make sure it is completed */ |
| #define W(a, v) do { iowrite32(v, wil->csr + HOSTADDR(a)); wmb(); } while (0) |
| /* register set = read, OR, write */ |
| #define S(a, v) W(a, R(a) | v) |
| /* register clear = read, AND with inverted, write */ |
| #define C(a, v) W(a, R(a) & ~v) |
| |
| static inline void wil_halt_cpu(struct wil6210_priv *wil) |
| { |
| W(RGF_USER_USER_CPU_0, BIT_USER_USER_CPU_MAN_RST); |
| W(RGF_USER_MAC_CPU_0, BIT_USER_MAC_CPU_MAN_RST); |
| } |
| |
| static inline void wil_release_cpu(struct wil6210_priv *wil) |
| { |
| /* Start CPU */ |
| W(RGF_USER_USER_CPU_0, 1); |
| } |
| |
| static int wil_target_reset(struct wil6210_priv *wil) |
| { |
| int delay = 0; |
| u32 x, x1 = 0; |
| |
| wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->hw_name); |
| |
| /* Clear MAC link up */ |
| S(RGF_HP_CTRL, BIT(15)); |
| S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_HPAL_PERST_FROM_PAD); |
| S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT_CAR_PERST_RST); |
| |
| wil_halt_cpu(wil); |
| |
| /* clear all boot loader "ready" bits */ |
| W(RGF_USER_BL + offsetof(struct RGF_BL, ready), 0); |
| /* Clear Fw Download notification */ |
| C(RGF_USER_USAGE_6, BIT(0)); |
| |
| S(RGF_CAF_OSC_CONTROL, BIT_CAF_OSC_XTAL_EN); |
| /* XTAL stabilization should take about 3ms */ |
| usleep_range(5000, 7000); |
| x = R(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*/ |
| C(RGF_USER_SPARROW_M_4, BIT_SPARROW_M_4_SEL_SLEEP_OR_REF); |
| /* 40 MHz */ |
| C(RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_CAR_AHB_SW_SEL); |
| |
| W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x3ff81f); |
| W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0xf); |
| |
| W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000); |
| W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F); |
| W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x000000f0); |
| W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FE00); |
| |
| W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0); |
| W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0x0); |
| |
| W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0); |
| W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0); |
| W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0); |
| W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); |
| |
| W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003); |
| W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000); /* reset A2 PCIE AHB */ |
| |
| W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0); |
| |
| /* wait until device ready. typical time is 20..80 msec */ |
| do { |
| msleep(RST_DELAY); |
| x = R(RGF_USER_BL + offsetof(struct RGF_BL, 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 != BIT_BL_READY); |
| |
| C(RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD); |
| |
| /* enable fix for HW bug related to the SA/DA swap in AP Rx */ |
| S(RGF_DMA_OFUL_NID_0, BIT_DMA_OFUL_NID_0_RX_EXT_TR_EN | |
| BIT_DMA_OFUL_NID_0_RX_EXT_A3_SRC); |
| |
| wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY); |
| return 0; |
| } |
| |
| void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r) |
| { |
| le32_to_cpus(&r->base); |
| le16_to_cpus(&r->entry_size); |
| le16_to_cpus(&r->size); |
| le32_to_cpus(&r->tail); |
| le32_to_cpus(&r->head); |
| } |
| |
| static int wil_get_bl_info(struct wil6210_priv *wil) |
| { |
| struct net_device *ndev = wil_to_ndev(wil); |
| struct RGF_BL bl; |
| |
| wil_memcpy_fromio_32(&bl, wil->csr + HOSTADDR(RGF_USER_BL), sizeof(bl)); |
| le32_to_cpus(&bl.ready); |
| le32_to_cpus(&bl.version); |
| le32_to_cpus(&bl.rf_type); |
| le32_to_cpus(&bl.baseband_type); |
| |
| if (!is_valid_ether_addr(bl.mac_address)) { |
| wil_err(wil, "BL: Invalid MAC %pM\n", bl.mac_address); |
| return -EINVAL; |
| } |
| |
| ether_addr_copy(ndev->perm_addr, bl.mac_address); |
| if (!is_valid_ether_addr(ndev->dev_addr)) |
| ether_addr_copy(ndev->dev_addr, bl.mac_address); |
| wil_info(wil, |
| "Boot Loader: ver = %d MAC = %pM RF = 0x%08x bband = 0x%08x\n", |
| bl.version, bl.mac_address, bl.rf_type, bl.baseband_type); |
| |
| return 0; |
| } |
| |
| static int wil_wait_for_fw_ready(struct wil6210_priv *wil) |
| { |
| ulong to = msecs_to_jiffies(1000); |
| ulong left = wait_for_completion_timeout(&wil->wmi_ready, to); |
| |
| if (0 == left) { |
| wil_err(wil, "Firmware not ready\n"); |
| return -ETIME; |
| } else { |
| wil_info(wil, "FW ready after %d ms. HW version 0x%08x\n", |
| jiffies_to_msecs(to-left), wil->hw_version); |
| } |
| return 0; |
| } |
| |
| /* |
| * We reset all the structures, and we reset the UMAC. |
| * After calling this routine, you're expected to reload |
| * the firmware. |
| */ |
| int wil_reset(struct wil6210_priv *wil, bool load_fw) |
| { |
| int rc; |
| |
| wil_dbg_misc(wil, "%s()\n", __func__); |
| |
| if (wil->hw_version == HW_VER_UNKNOWN) |
| return -ENODEV; |
| |
| 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_to_ndev(wil); |
| |
| ether_addr_copy(ndev->perm_addr, mac); |
| ether_addr_copy(ndev->dev_addr, ndev->perm_addr); |
| return 0; |
| } |
| |
| cancel_work_sync(&wil->disconnect_worker); |
| wil6210_disconnect(wil, NULL, WLAN_REASON_DEAUTH_LEAVING, false); |
| wil_bcast_fini(wil); |
| |
| /* prevent NAPI from being scheduled */ |
| bitmap_zero(wil->status, wil_status_last); |
| |
| if (wil->scan_request) { |
| wil_dbg_misc(wil, "Abort scan_request 0x%p\n", |
| wil->scan_request); |
| del_timer_sync(&wil->scan_timer); |
| cfg80211_scan_done(wil->scan_request, true); |
| wil->scan_request = NULL; |
| } |
| |
| wil_mask_irq(wil); |
| |
| wmi_event_flush(wil); |
| |
| flush_workqueue(wil->wq_service); |
| flush_workqueue(wil->wmi_wq); |
| |
| rc = wil_target_reset(wil); |
| wil_rx_fini(wil); |
| if (rc) |
| return rc; |
| |
| rc = wil_get_bl_info(wil); |
| if (rc) |
| return rc; |
| |
| if (load_fw) { |
| wil_info(wil, "Use firmware <%s> + board <%s>\n", WIL_FW_NAME, |
| WIL_FW2_NAME); |
| |
| wil_halt_cpu(wil); |
| /* Loading f/w from the file */ |
| rc = wil_request_firmware(wil, WIL_FW_NAME); |
| if (rc) |
| return rc; |
| rc = wil_request_firmware(wil, WIL_FW2_NAME); |
| if (rc) |
| return rc; |
| |
| /* Mark FW as loaded from host */ |
| S(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 */ |
| S(RGF_CAF_ICR + offsetof(struct RGF_ICR, ICR), 0); |
| W(RGF_CAF_ICR + offsetof(struct RGF_ICR, IMV), ~0); |
| |
| wil_release_cpu(wil); |
| } |
| |
| /* init after reset */ |
| wil->pending_connect_cid = -1; |
| wil->ap_isolate = 0; |
| reinit_completion(&wil->wmi_ready); |
| reinit_completion(&wil->wmi_call); |
| |
| if (load_fw) { |
| wil_configure_interrupt_moderation(wil); |
| wil_unmask_irq(wil); |
| |
| /* we just started MAC, wait for FW ready */ |
| rc = wil_wait_for_fw_ready(wil); |
| if (rc == 0) /* check FW is responsive */ |
| rc = wmi_echo(wil); |
| } |
| |
| return rc; |
| } |
| |
| #undef R |
| #undef W |
| #undef S |
| #undef C |
| |
| void wil_fw_error_recovery(struct wil6210_priv *wil) |
| { |
| wil_dbg_misc(wil, "starting fw error recovery\n"); |
| wil->recovery_state = fw_recovery_pending; |
| schedule_work(&wil->fw_error_worker); |
| } |
| |
| int __wil_up(struct wil6210_priv *wil) |
| { |
| struct net_device *ndev = wil_to_ndev(wil); |
| struct wireless_dev *wdev = wil->wdev; |
| int rc; |
| |
| WARN_ON(!mutex_is_locked(&wil->mutex)); |
| |
| rc = wil_reset(wil, true); |
| if (rc) |
| return rc; |
| |
| /* Rx VRING. After MAC and beacon */ |
| rc = wil_rx_init(wil, 1 << rx_ring_order); |
| if (rc) |
| return rc; |
| |
| switch (wdev->iftype) { |
| case NL80211_IFTYPE_STATION: |
| wil_dbg_misc(wil, "type: STATION\n"); |
| ndev->type = ARPHRD_ETHER; |
| break; |
| case NL80211_IFTYPE_AP: |
| wil_dbg_misc(wil, "type: AP\n"); |
| ndev->type = ARPHRD_ETHER; |
| break; |
| case NL80211_IFTYPE_P2P_CLIENT: |
| wil_dbg_misc(wil, "type: P2P_CLIENT\n"); |
| ndev->type = ARPHRD_ETHER; |
| break; |
| case NL80211_IFTYPE_P2P_GO: |
| wil_dbg_misc(wil, "type: P2P_GO\n"); |
| ndev->type = ARPHRD_ETHER; |
| break; |
| case NL80211_IFTYPE_MONITOR: |
| wil_dbg_misc(wil, "type: Monitor\n"); |
| ndev->type = ARPHRD_IEEE80211_RADIOTAP; |
| /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */ |
| break; |
| default: |
| return -EOPNOTSUPP; |
| } |
| |
| /* MAC address - pre-requisite for other commands */ |
| wmi_set_mac_address(wil, ndev->dev_addr); |
| |
| wil_dbg_misc(wil, "NAPI enable\n"); |
| napi_enable(&wil->napi_rx); |
| napi_enable(&wil->napi_tx); |
| set_bit(wil_status_napi_en, wil->status); |
| |
| if (wil->platform_ops.bus_request) |
| wil->platform_ops.bus_request(wil->platform_handle, |
| WIL_MAX_BUS_REQUEST_KBPS); |
| |
| return 0; |
| } |
| |
| int wil_up(struct wil6210_priv *wil) |
| { |
| int rc; |
| |
| wil_dbg_misc(wil, "%s()\n", __func__); |
| |
| mutex_lock(&wil->mutex); |
| rc = __wil_up(wil); |
| mutex_unlock(&wil->mutex); |
| |
| return rc; |
| } |
| |
| int __wil_down(struct wil6210_priv *wil) |
| { |
| int iter = WAIT_FOR_DISCONNECT_TIMEOUT_MS / |
| WAIT_FOR_DISCONNECT_INTERVAL_MS; |
| |
| WARN_ON(!mutex_is_locked(&wil->mutex)); |
| |
| if (wil->platform_ops.bus_request) |
| wil->platform_ops.bus_request(wil->platform_handle, 0); |
| |
| wil_disable_irq(wil); |
| if (test_and_clear_bit(wil_status_napi_en, wil->status)) { |
| napi_disable(&wil->napi_rx); |
| napi_disable(&wil->napi_tx); |
| wil_dbg_misc(wil, "NAPI disable\n"); |
| } |
| wil_enable_irq(wil); |
| |
| if (wil->scan_request) { |
| wil_dbg_misc(wil, "Abort scan_request 0x%p\n", |
| wil->scan_request); |
| del_timer_sync(&wil->scan_timer); |
| cfg80211_scan_done(wil->scan_request, true); |
| wil->scan_request = NULL; |
| } |
| |
| if (test_bit(wil_status_fwconnected, wil->status) || |
| test_bit(wil_status_fwconnecting, wil->status)) |
| wmi_send(wil, WMI_DISCONNECT_CMDID, NULL, 0); |
| |
| /* make sure wil is idle (not connected) */ |
| mutex_unlock(&wil->mutex); |
| while (iter--) { |
| int idle = !test_bit(wil_status_fwconnected, wil->status) && |
| !test_bit(wil_status_fwconnecting, wil->status); |
| if (idle) |
| break; |
| msleep(WAIT_FOR_DISCONNECT_INTERVAL_MS); |
| } |
| mutex_lock(&wil->mutex); |
| |
| if (!iter) |
| wil_err(wil, "timeout waiting for idle FW/HW\n"); |
| |
| wil_reset(wil, false); |
| |
| return 0; |
| } |
| |
| int wil_down(struct wil6210_priv *wil) |
| { |
| int rc; |
| |
| wil_dbg_misc(wil, "%s()\n", __func__); |
| |
| wil_set_recovery_state(wil, fw_recovery_idle); |
| mutex_lock(&wil->mutex); |
| rc = __wil_down(wil); |
| mutex_unlock(&wil->mutex); |
| |
| return rc; |
| } |
| |
| int wil_find_cid(struct wil6210_priv *wil, const u8 *mac) |
| { |
| int i; |
| int rc = -ENOENT; |
| |
| for (i = 0; i < ARRAY_SIZE(wil->sta); i++) { |
| if ((wil->sta[i].status != wil_sta_unused) && |
| ether_addr_equal(wil->sta[i].addr, mac)) { |
| rc = i; |
| break; |
| } |
| } |
| |
| return rc; |
| } |