/*
- * Copyright (c) 2012 Qualcomm Atheros, Inc.
+ * Copyright (c) 2012-2014 Qualcomm Atheros, Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
#include "wil6210.h"
#include "txrx.h"
+#include "wmi.h"
-static bool no_fw_recovery;
+#define WAIT_FOR_DISCONNECT_TIMEOUT_MS 2000
+#define WAIT_FOR_DISCONNECT_INTERVAL_MS 10
+
+bool no_fw_recovery;
module_param(no_fw_recovery, bool, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(no_fw_recovery, " disable FW error recovery");
+MODULE_PARM_DESC(no_fw_recovery, " disable automatic FW error recovery");
+
+static bool no_fw_load = true;
+module_param(no_fw_load, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(no_fw_load, " do not download FW, use one in on-card flash.");
+
+static unsigned int itr_trsh = WIL6210_ITR_TRSH_DEFAULT;
+
+module_param(itr_trsh, uint, S_IRUGO);
+MODULE_PARM_DESC(itr_trsh, " Interrupt moderation threshold, usecs.");
+
+/* 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 - ETH_HLEN;
+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 > IEEE80211_MAX_DATA_LEN_DMG)
+ 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.");
+
+#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,
__raw_writel(*s++, d++);
}
-static void wil_disconnect_cid(struct wil6210_priv *wil, int cid)
+static void wil_disconnect_cid(struct wil6210_priv *wil, int cid,
+ bool from_event)
{
uint i;
struct net_device *ndev = wil_to_ndev(wil);
struct wireless_dev *wdev = wil->wdev;
struct wil_sta_info *sta = &wil->sta[cid];
+
wil_dbg_misc(wil, "%s(CID %d, status %d)\n", __func__, cid,
sta->status);
sta->data_port_open = false;
if (sta->status != wil_sta_unused) {
- wmi_disconnect_sta(wil, sta->addr, WLAN_REASON_DEAUTH_LEAVING);
+ if (!from_event)
+ wmi_disconnect_sta(wil, sta->addr,
+ WLAN_REASON_DEAUTH_LEAVING);
+
switch (wdev->iftype) {
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_P2P_GO:
}
for (i = 0; i < WIL_STA_TID_NUM; i++) {
- struct wil_tid_ampdu_rx *r = sta->tid_rx[i];
+ struct wil_tid_ampdu_rx *r;
+ unsigned long flags;
+
+ spin_lock_irqsave(&sta->tid_rx_lock, flags);
+
+ r = sta->tid_rx[i];
sta->tid_rx[i] = NULL;
wil_tid_ampdu_rx_free(wil, r);
+
+ spin_unlock_irqrestore(&sta->tid_rx_lock, flags);
}
for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) {
if (wil->vring2cid_tid[i][0] == cid)
memset(&sta->stats, 0, sizeof(sta->stats));
}
-static void _wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid)
+static void _wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid,
+ bool from_event)
{
int cid = -ENOENT;
struct net_device *ndev = wil_to_ndev(wil);
}
if (cid >= 0) /* disconnect 1 peer */
- wil_disconnect_cid(wil, cid);
+ wil_disconnect_cid(wil, cid, from_event);
else /* disconnect all */
for (cid = 0; cid < WIL6210_MAX_CID; cid++)
- wil_disconnect_cid(wil, cid);
+ wil_disconnect_cid(wil, cid, from_event);
/* link state */
switch (wdev->iftype) {
struct wil6210_priv, disconnect_worker);
mutex_lock(&wil->mutex);
- _wil6210_disconnect(wil, NULL);
+ _wil6210_disconnect(wil, NULL, false);
mutex_unlock(&wil->mutex);
}
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 wil6210_priv *wil = container_of(work, struct wil6210_priv,
+ fw_error_worker);
struct wireless_dev *wdev = wil->wdev;
wil_dbg_misc(wil, "fw error worker\n");
- if (no_fw_recovery)
+ 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
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_MONITOR:
- wil_info(wil, "fw error recovery started (try %d)...\n",
+ wil_info(wil, "fw error recovery requested (try %d)...\n",
wil->recovery_count);
- wil_reset(wil);
+ if (!no_fw_recovery)
+ wil->recovery_state = fw_recovery_running;
+ if (0 != wil_wait_for_recovery(wil))
+ break;
- /* need to re-allocate Rx ring after reset */
- wil_rx_init(wil);
+ __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;
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);
init_completion(&wil->wmi_ready);
+ init_completion(&wil->wmi_call);
wil->pending_connect_cid = -1;
setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil);
INIT_LIST_HEAD(&wil->pending_wmi_ev);
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)
}
wil->last_fw_recovery = jiffies;
+ wil->itr_trsh = itr_trsh;
return 0;
}
-void wil6210_disconnect(struct wil6210_priv *wil, const u8 *bssid)
+/**
+ * wil6210_disconnect - disconnect one connection
+ * @wil: driver context
+ * @bssid: peer to disconnect, NULL to disconnect all
+ * @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,
+ bool from_event)
{
+ wil_dbg_misc(wil, "%s()\n", __func__);
+
del_timer_sync(&wil->connect_timer);
- _wil6210_disconnect(wil, bssid);
+ _wil6210_disconnect(wil, bssid, 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);
+ wil6210_disconnect(wil, NULL, false);
mutex_unlock(&wil->mutex);
wmi_event_flush(wil);
destroy_workqueue(wil->wmi_wq_conn);
destroy_workqueue(wil->wmi_wq);
}
-static void wil_target_reset(struct wil6210_priv *wil)
+/* 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 hw_state;
+ u32 x;
u32 rev_id;
bool is_sparrow = (wil->board->board == WIL_BOARD_SPARROW);
wil_dbg_misc(wil, "Resetting \"%s\"...\n", wil->board->name);
- /* register read */
-#define R(a) ioread32(wil->csr + HOSTADDR(a))
- /* register write */
-#define W(a, v) iowrite32(v, wil->csr + HOSTADDR(a))
- /* register set = read, OR, write */
-#define S(a, v) W(a, R(a) | v)
- /* register clear = read, AND with inverted, write */
-#define C(a, v) W(a, R(a) & ~v)
-
wil->hw_version = R(RGF_USER_FW_REV_ID);
rev_id = wil->hw_version & 0xff;
/* Clear MAC link up */
S(RGF_HP_CTRL, BIT(15));
- /* hpal_perst_from_pad_src_n_mask */
- S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT(6));
- /* car_perst_rst_src_n_mask */
- S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT(7));
- wmb(); /* order is important here */
+ 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);
if (is_sparrow) {
+ 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);
- wmb(); /* order is important here */
+ W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_1, 0xf);
}
- W(RGF_USER_MAC_CPU_0, BIT(1)); /* mac_cpu_man_rst */
- W(RGF_USER_USER_CPU_0, BIT(1)); /* user_cpu_man_rst */
- wmb(); /* order is important here */
-
W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000);
W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F);
- W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, is_sparrow ? 0x000000B0 : 0x00000170);
- W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FC00);
- wmb(); /* order is important here */
+ W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, is_sparrow ? 0x000000f0 : 0x00000170);
+ W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FE00);
if (is_sparrow) {
W(RGF_USER_CLKS_CTL_EXT_SW_RST_VEC_0, 0x0);
- wmb(); /* order is important here */
+ 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);
- wmb(); /* order is important here */
if (is_sparrow) {
W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000003);
/* reset A2 PCIE AHB */
W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000);
-
} else {
W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000001);
if (rev_id == 1) {
W(RGF_PCIE_LOS_COUNTER_CTL, BIT(6) | BIT(8));
W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000);
}
-
}
/* TODO: check order here!!! Erez code is different */
W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0);
- wmb(); /* order is important here */
- /* wait until device ready */
+ /* wait until device ready. typical time is 200..250 msec */
do {
- msleep(1);
- hw_state = R(RGF_USER_HW_MACHINE_STATE);
- if (delay++ > 100) {
+ msleep(RST_DELAY);
+ x = R(RGF_USER_HW_MACHINE_STATE);
+ if (delay++ > RST_COUNT) {
wil_err(wil, "Reset not completed, hw_state 0x%08x\n",
- hw_state);
- return;
+ x);
+ return -ETIME;
}
- } while (hw_state != HW_MACHINE_BOOT_DONE);
+ } while (x != HW_MACHINE_BOOT_DONE);
/* TODO: Erez check rev_id != 1 */
if (!is_sparrow && (rev_id != 1))
W(RGF_PCIE_LOS_COUNTER_CTL, BIT(8));
C(RGF_USER_CLKS_CTL_0, BIT_USER_CLKS_RST_PWGD);
- wmb(); /* order is important here */
- wil_dbg_misc(wil, "Reset completed in %d ms\n", delay);
+ wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY);
+ return 0;
+}
+
+/**
+ * wil_set_itr_trsh: - apply interrupt coalescing params
+ */
+void wil_set_itr_trsh(struct wil6210_priv *wil)
+{
+ /* disable, use usec resolution */
+ W(RGF_DMA_ITR_CNT_CRL, BIT_DMA_ITR_CNT_CRL_EXT_TICK);
+
+ /* disable interrupt moderation for monitor
+ * to get better timestamp precision
+ */
+ if (wil->wdev->iftype == NL80211_IFTYPE_MONITOR)
+ return;
+
+ wil_info(wil, "set ITR_TRSH = %d usec\n", wil->itr_trsh);
+ W(RGF_DMA_ITR_CNT_TRSH, wil->itr_trsh);
+ W(RGF_DMA_ITR_CNT_CRL, BIT_DMA_ITR_CNT_CRL_EN |
+ BIT_DMA_ITR_CNT_CRL_EXT_TICK); /* start it */
+}
#undef R
#undef W
#undef S
#undef C
-}
void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r)
{
{
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;
{
int rc;
+ wil_dbg_misc(wil, "%s()\n", __func__);
+
WARN_ON(!mutex_is_locked(&wil->mutex));
+ WARN_ON(test_bit(wil_status_napi_en, &wil->status));
cancel_work_sync(&wil->disconnect_worker);
- wil6210_disconnect(wil, NULL);
+ wil6210_disconnect(wil, NULL, false);
wil->status = 0; /* prevent NAPI from being scheduled */
- if (test_bit(wil_status_napi_en, &wil->status)) {
- napi_synchronize(&wil->napi_rx);
- }
if (wil->scan_request) {
wil_dbg_misc(wil, "Abort scan_request 0x%p\n",
wil->scan_request = NULL;
}
- wil6210_disable_irq(wil);
+ wil_mask_irq(wil);
wmi_event_flush(wil);
flush_workqueue(wil->wmi_wq_conn);
flush_workqueue(wil->wmi_wq);
- /* TODO: put MAC in reset */
- wil_target_reset(wil);
-
+ rc = wil_target_reset(wil);
wil_rx_fini(wil);
+ if (rc)
+ return rc;
+
+ if (!no_fw_load) {
+ wil_info(wil, "Use firmware <%s>\n", WIL_FW_NAME);
+ wil_halt_cpu(wil);
+ /* Loading f/w from the file */
+ rc = wil_request_firmware(wil, WIL_FW_NAME);
+ if (rc)
+ return rc;
+
+ /* clear any interrupts which on-card-firmware may have set */
+ wil6210_clear_irq(wil);
+ { /* CAF_ICR - clear and mask */
+ u32 a = HOSTADDR(RGF_CAF_ICR) +
+ offsetof(struct RGF_ICR, ICR);
+ u32 m = HOSTADDR(RGF_CAF_ICR) +
+ offsetof(struct RGF_ICR, IMV);
+ u32 icr = ioread32(wil->csr + a);
+
+ iowrite32(icr, wil->csr + a); /* W1C */
+ iowrite32(~0, wil->csr + m);
+ wmb(); /* wait for completion */
+ }
+ wil_release_cpu(wil);
+ } else {
+ wil_info(wil, "Use firmware from on-card flash\n");
+ }
/* init after reset */
wil->pending_connect_cid = -1;
reinit_completion(&wil->wmi_ready);
+ reinit_completion(&wil->wmi_call);
- /* TODO: release MAC reset */
- wil6210_enable_irq(wil);
+ wil_unmask_irq(wil);
/* we just started MAC, wait for FW ready */
rc = wil_wait_for_fw_ready(wil);
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);
}
netif_carrier_off(ndev);
}
-static int __wil_up(struct wil6210_priv *wil)
+int __wil_up(struct wil6210_priv *wil)
{
struct net_device *ndev = wil_to_ndev(wil);
struct wireless_dev *wdev = wil->wdev;
/* 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 rc;
+ wil_dbg_misc(wil, "%s()\n", __func__);
+
mutex_lock(&wil->mutex);
rc = __wil_up(wil);
mutex_unlock(&wil->mutex);
return rc;
}
-static int __wil_down(struct wil6210_priv *wil)
+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));
- clear_bit(wil_status_napi_en, &wil->status);
- napi_disable(&wil->napi_rx);
- napi_disable(&wil->napi_tx);
+ 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 = NULL;
}
- wil6210_disconnect(wil, 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_rx_fini(wil);
return 0;
{
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);
projects / karo-tx-linux.git / blobdiff