{ USB_DEVICE(0x157e, 0x300a), .driver_info = DEVICE_ZD1211 },
{ USB_DEVICE(0x157e, 0x300b), .driver_info = DEVICE_ZD1211 },
{ USB_DEVICE(0x157e, 0x3204), .driver_info = DEVICE_ZD1211 },
+ { USB_DEVICE(0x157e, 0x3207), .driver_info = DEVICE_ZD1211 },
{ USB_DEVICE(0x1740, 0x2000), .driver_info = DEVICE_ZD1211 },
{ USB_DEVICE(0x6891, 0xa727), .driver_info = DEVICE_ZD1211 },
/* ZD1211B */
int_num = le16_to_cpu(*(__le16 *)(urb->transfer_buffer+2));
if (int_num == CR_INTERRUPT) {
struct zd_mac *mac = zd_hw_mac(zd_usb_to_hw(urb->context));
+ spin_lock(&mac->lock);
memcpy(&mac->intr_buffer, urb->transfer_buffer,
USB_MAX_EP_INT_BUFFER);
+ spin_unlock(&mac->lock);
schedule_work(&mac->process_intr);
} else if (intr->read_regs_enabled) {
intr->read_regs.length = len = urb->actual_length;
case -ENOENT:
case -ECONNRESET:
case -EPIPE:
- goto kfree;
+ dev_dbg_f(urb_dev(urb), "urb %p error %d\n", urb, urb->status);
+ return;
default:
+ dev_dbg_f(urb_dev(urb), "urb %p error %d\n", urb, urb->status);
goto resubmit;
}
resubmit:
r = usb_submit_urb(urb, GFP_ATOMIC);
if (r) {
- dev_dbg_f(urb_dev(urb), "resubmit urb %p\n", urb);
- goto kfree;
+ dev_dbg_f(urb_dev(urb), "error: resubmit urb %p err code %d\n",
+ urb, r);
+ /* TODO: add worker to reset intr->urb */
}
return;
-kfree:
- kfree(urb->transfer_buffer);
}
static inline int int_urb_interval(struct usb_device *udev)
int zd_usb_enable_int(struct zd_usb *usb)
{
int r;
- struct usb_device *udev;
+ struct usb_device *udev = zd_usb_to_usbdev(usb);
struct zd_usb_interrupt *intr = &usb->intr;
- void *transfer_buffer = NULL;
struct urb *urb;
dev_dbg_f(zd_usb_dev(usb), "\n");
intr->urb = urb;
spin_unlock_irq(&intr->lock);
- /* TODO: make it a DMA buffer */
r = -ENOMEM;
- transfer_buffer = kmalloc(USB_MAX_EP_INT_BUFFER, GFP_KERNEL);
- if (!transfer_buffer) {
+ intr->buffer = usb_alloc_coherent(udev, USB_MAX_EP_INT_BUFFER,
+ GFP_KERNEL, &intr->buffer_dma);
+ if (!intr->buffer) {
dev_dbg_f(zd_usb_dev(usb),
"couldn't allocate transfer_buffer\n");
goto error_set_urb_null;
}
- udev = zd_usb_to_usbdev(usb);
usb_fill_int_urb(urb, udev, usb_rcvintpipe(udev, EP_INT_IN),
- transfer_buffer, USB_MAX_EP_INT_BUFFER,
+ intr->buffer, USB_MAX_EP_INT_BUFFER,
int_urb_complete, usb,
intr->interval);
+ urb->transfer_dma = intr->buffer_dma;
+ urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
dev_dbg_f(zd_usb_dev(usb), "submit urb %p\n", intr->urb);
r = usb_submit_urb(urb, GFP_KERNEL);
return 0;
error:
- kfree(transfer_buffer);
+ usb_free_coherent(udev, USB_MAX_EP_INT_BUFFER,
+ intr->buffer, intr->buffer_dma);
error_set_urb_null:
spin_lock_irq(&intr->lock);
intr->urb = NULL;
void zd_usb_disable_int(struct zd_usb *usb)
{
unsigned long flags;
+ struct usb_device *udev = zd_usb_to_usbdev(usb);
struct zd_usb_interrupt *intr = &usb->intr;
struct urb *urb;
+ void *buffer;
+ dma_addr_t buffer_dma;
spin_lock_irqsave(&intr->lock, flags);
urb = intr->urb;
return;
}
intr->urb = NULL;
+ buffer = intr->buffer;
+ buffer_dma = intr->buffer_dma;
+ intr->buffer = NULL;
spin_unlock_irqrestore(&intr->lock, flags);
usb_kill_urb(urb);
dev_dbg_f(zd_usb_dev(usb), "urb %p killed\n", urb);
usb_free_urb(urb);
+
+ if (buffer)
+ usb_free_coherent(udev, USB_MAX_EP_INT_BUFFER,
+ buffer, buffer_dma);
}
static void handle_rx_packet(struct zd_usb *usb, const u8 *buffer,
static void rx_urb_complete(struct urb *urb)
{
+ int r;
struct zd_usb *usb;
struct zd_usb_rx *rx;
const u8 *buffer;
case -ENOENT:
case -ECONNRESET:
case -EPIPE:
+ dev_dbg_f(urb_dev(urb), "urb %p error %d\n", urb, urb->status);
return;
default:
dev_dbg_f(urb_dev(urb), "urb %p error %d\n", urb, urb->status);
usb = urb->context;
rx = &usb->rx;
+ zd_usb_reset_rx_idle_timer(usb);
+
if (length%rx->usb_packet_size > rx->usb_packet_size-4) {
/* If there is an old first fragment, we don't care. */
dev_dbg_f(urb_dev(urb), "*** first fragment ***\n");
}
resubmit:
- usb_submit_urb(urb, GFP_ATOMIC);
+ r = usb_submit_urb(urb, GFP_ATOMIC);
+ if (r)
+ dev_dbg_f(urb_dev(urb), "urb %p resubmit error %d\n", urb, r);
}
static struct urb *alloc_rx_urb(struct zd_usb *usb)
usb_free_urb(urb);
}
-int zd_usb_enable_rx(struct zd_usb *usb)
+static int __zd_usb_enable_rx(struct zd_usb *usb)
{
int i, r;
struct zd_usb_rx *rx = &usb->rx;
return r;
}
-void zd_usb_disable_rx(struct zd_usb *usb)
+int zd_usb_enable_rx(struct zd_usb *usb)
+{
+ int r;
+ struct zd_usb_rx *rx = &usb->rx;
+
+ mutex_lock(&rx->setup_mutex);
+ r = __zd_usb_enable_rx(usb);
+ mutex_unlock(&rx->setup_mutex);
+
+ zd_usb_reset_rx_idle_timer(usb);
+
+ return r;
+}
+
+static void __zd_usb_disable_rx(struct zd_usb *usb)
{
int i;
unsigned long flags;
spin_unlock_irqrestore(&rx->lock, flags);
}
+void zd_usb_disable_rx(struct zd_usb *usb)
+{
+ struct zd_usb_rx *rx = &usb->rx;
+
+ mutex_lock(&rx->setup_mutex);
+ __zd_usb_disable_rx(usb);
+ mutex_unlock(&rx->setup_mutex);
+
+ cancel_delayed_work_sync(&rx->idle_work);
+}
+
+static void zd_usb_reset_rx(struct zd_usb *usb)
+{
+ bool do_reset;
+ struct zd_usb_rx *rx = &usb->rx;
+ unsigned long flags;
+
+ mutex_lock(&rx->setup_mutex);
+
+ spin_lock_irqsave(&rx->lock, flags);
+ do_reset = rx->urbs != NULL;
+ spin_unlock_irqrestore(&rx->lock, flags);
+
+ if (do_reset) {
+ __zd_usb_disable_rx(usb);
+ __zd_usb_enable_rx(usb);
+ }
+
+ mutex_unlock(&rx->setup_mutex);
+
+ if (do_reset)
+ zd_usb_reset_rx_idle_timer(usb);
+}
+
/**
* zd_usb_disable_tx - disable transmission
* @usb: the zd1211rw-private USB structure
{
struct zd_usb_tx *tx = &usb->tx;
unsigned long flags;
- struct list_head *pos, *n;
+
+ atomic_set(&tx->enabled, 0);
+
+ /* kill all submitted tx-urbs */
+ usb_kill_anchored_urbs(&tx->submitted);
spin_lock_irqsave(&tx->lock, flags);
- list_for_each_safe(pos, n, &tx->free_urb_list) {
- list_del(pos);
- usb_free_urb(list_entry(pos, struct urb, urb_list));
- }
- tx->enabled = 0;
+ WARN_ON(!skb_queue_empty(&tx->submitted_skbs));
+ WARN_ON(tx->submitted_urbs != 0);
tx->submitted_urbs = 0;
+ spin_unlock_irqrestore(&tx->lock, flags);
+
/* The stopped state is ignored, relying on ieee80211_wake_queues()
* in a potentionally following zd_usb_enable_tx().
*/
- spin_unlock_irqrestore(&tx->lock, flags);
}
/**
struct zd_usb_tx *tx = &usb->tx;
spin_lock_irqsave(&tx->lock, flags);
- tx->enabled = 1;
+ atomic_set(&tx->enabled, 1);
tx->submitted_urbs = 0;
ieee80211_wake_queues(zd_usb_to_hw(usb));
tx->stopped = 0;
spin_unlock_irqrestore(&tx->lock, flags);
}
-/**
- * alloc_tx_urb - provides an tx URB
- * @usb: a &struct zd_usb pointer
- *
- * Allocates a new URB. If possible takes the urb from the free list in
- * usb->tx.
- */
-static struct urb *alloc_tx_urb(struct zd_usb *usb)
-{
- struct zd_usb_tx *tx = &usb->tx;
- unsigned long flags;
- struct list_head *entry;
- struct urb *urb;
-
- spin_lock_irqsave(&tx->lock, flags);
- if (list_empty(&tx->free_urb_list)) {
- urb = usb_alloc_urb(0, GFP_ATOMIC);
- goto out;
- }
- entry = tx->free_urb_list.next;
- list_del(entry);
- urb = list_entry(entry, struct urb, urb_list);
-out:
- spin_unlock_irqrestore(&tx->lock, flags);
- return urb;
-}
-
-/**
- * free_tx_urb - frees a used tx URB
- * @usb: a &struct zd_usb pointer
- * @urb: URB to be freed
- *
- * Frees the transmission URB, which means to put it on the free URB
- * list.
- */
-static void free_tx_urb(struct zd_usb *usb, struct urb *urb)
-{
- struct zd_usb_tx *tx = &usb->tx;
- unsigned long flags;
-
- spin_lock_irqsave(&tx->lock, flags);
- if (!tx->enabled) {
- usb_free_urb(urb);
- goto out;
- }
- list_add(&urb->urb_list, &tx->free_urb_list);
-out:
- spin_unlock_irqrestore(&tx->lock, flags);
-}
-
static void tx_dec_submitted_urbs(struct zd_usb *usb)
{
struct zd_usb_tx *tx = &usb->tx;
struct sk_buff *skb;
struct ieee80211_tx_info *info;
struct zd_usb *usb;
+ struct zd_usb_tx *tx;
+
+ skb = (struct sk_buff *)urb->context;
+ info = IEEE80211_SKB_CB(skb);
+ /*
+ * grab 'usb' pointer before handing off the skb (since
+ * it might be freed by zd_mac_tx_to_dev or mac80211)
+ */
+ usb = &zd_hw_mac(info->rate_driver_data[0])->chip.usb;
+ tx = &usb->tx;
switch (urb->status) {
case 0:
goto resubmit;
}
free_urb:
- skb = (struct sk_buff *)urb->context;
- /*
- * grab 'usb' pointer before handing off the skb (since
- * it might be freed by zd_mac_tx_to_dev or mac80211)
- */
- info = IEEE80211_SKB_CB(skb);
- usb = &zd_hw_mac(info->rate_driver_data[0])->chip.usb;
+ skb_unlink(skb, &usb->tx.submitted_skbs);
zd_mac_tx_to_dev(skb, urb->status);
- free_tx_urb(usb, urb);
+ usb_free_urb(urb);
tx_dec_submitted_urbs(usb);
return;
resubmit:
+ usb_anchor_urb(urb, &tx->submitted);
r = usb_submit_urb(urb, GFP_ATOMIC);
if (r) {
+ usb_unanchor_urb(urb);
dev_dbg_f(urb_dev(urb), "error resubmit urb %p %d\n", urb, r);
goto free_urb;
}
int zd_usb_tx(struct zd_usb *usb, struct sk_buff *skb)
{
int r;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct usb_device *udev = zd_usb_to_usbdev(usb);
struct urb *urb;
+ struct zd_usb_tx *tx = &usb->tx;
+
+ if (!atomic_read(&tx->enabled)) {
+ r = -ENOENT;
+ goto out;
+ }
- urb = alloc_tx_urb(usb);
+ urb = usb_alloc_urb(0, GFP_ATOMIC);
if (!urb) {
r = -ENOMEM;
goto out;
usb_fill_bulk_urb(urb, udev, usb_sndbulkpipe(udev, EP_DATA_OUT),
skb->data, skb->len, tx_urb_complete, skb);
+ info->rate_driver_data[1] = (void *)jiffies;
+ skb_queue_tail(&tx->submitted_skbs, skb);
+ usb_anchor_urb(urb, &tx->submitted);
+
r = usb_submit_urb(urb, GFP_ATOMIC);
- if (r)
+ if (r) {
+ dev_dbg_f(zd_usb_dev(usb), "error submit urb %p %d\n", urb, r);
+ usb_unanchor_urb(urb);
+ skb_unlink(skb, &tx->submitted_skbs);
goto error;
+ }
tx_inc_submitted_urbs(usb);
return 0;
error:
- free_tx_urb(usb, urb);
+ usb_free_urb(urb);
out:
return r;
}
+static bool zd_tx_timeout(struct zd_usb *usb)
+{
+ struct zd_usb_tx *tx = &usb->tx;
+ struct sk_buff_head *q = &tx->submitted_skbs;
+ struct sk_buff *skb, *skbnext;
+ struct ieee80211_tx_info *info;
+ unsigned long flags, trans_start;
+ bool have_timedout = false;
+
+ spin_lock_irqsave(&q->lock, flags);
+ skb_queue_walk_safe(q, skb, skbnext) {
+ info = IEEE80211_SKB_CB(skb);
+ trans_start = (unsigned long)info->rate_driver_data[1];
+
+ if (time_is_before_jiffies(trans_start + ZD_TX_TIMEOUT)) {
+ have_timedout = true;
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&q->lock, flags);
+
+ return have_timedout;
+}
+
+static void zd_tx_watchdog_handler(struct work_struct *work)
+{
+ struct zd_usb *usb =
+ container_of(work, struct zd_usb, tx.watchdog_work.work);
+ struct zd_usb_tx *tx = &usb->tx;
+
+ if (!atomic_read(&tx->enabled) || !tx->watchdog_enabled)
+ goto out;
+ if (!zd_tx_timeout(usb))
+ goto out;
+
+ /* TX halted, try reset */
+ dev_warn(zd_usb_dev(usb), "TX-stall detected, reseting device...");
+
+ usb_queue_reset_device(usb->intf);
+
+ /* reset will stop this worker, don't rearm */
+ return;
+out:
+ queue_delayed_work(zd_workqueue, &tx->watchdog_work,
+ ZD_TX_WATCHDOG_INTERVAL);
+}
+
+void zd_tx_watchdog_enable(struct zd_usb *usb)
+{
+ struct zd_usb_tx *tx = &usb->tx;
+
+ if (!tx->watchdog_enabled) {
+ dev_dbg_f(zd_usb_dev(usb), "\n");
+ queue_delayed_work(zd_workqueue, &tx->watchdog_work,
+ ZD_TX_WATCHDOG_INTERVAL);
+ tx->watchdog_enabled = 1;
+ }
+}
+
+void zd_tx_watchdog_disable(struct zd_usb *usb)
+{
+ struct zd_usb_tx *tx = &usb->tx;
+
+ if (tx->watchdog_enabled) {
+ dev_dbg_f(zd_usb_dev(usb), "\n");
+ tx->watchdog_enabled = 0;
+ cancel_delayed_work_sync(&tx->watchdog_work);
+ }
+}
+
+static void zd_rx_idle_timer_handler(struct work_struct *work)
+{
+ struct zd_usb *usb =
+ container_of(work, struct zd_usb, rx.idle_work.work);
+ struct zd_mac *mac = zd_usb_to_mac(usb);
+
+ if (!test_bit(ZD_DEVICE_RUNNING, &mac->flags))
+ return;
+
+ dev_dbg_f(zd_usb_dev(usb), "\n");
+
+ /* 30 seconds since last rx, reset rx */
+ zd_usb_reset_rx(usb);
+}
+
+void zd_usb_reset_rx_idle_timer(struct zd_usb *usb)
+{
+ struct zd_usb_rx *rx = &usb->rx;
+
+ cancel_delayed_work(&rx->idle_work);
+ queue_delayed_work(zd_workqueue, &rx->idle_work, ZD_RX_IDLE_INTERVAL);
+}
+
static inline void init_usb_interrupt(struct zd_usb *usb)
{
struct zd_usb_interrupt *intr = &usb->intr;
{
struct zd_usb_rx *rx = &usb->rx;
spin_lock_init(&rx->lock);
+ mutex_init(&rx->setup_mutex);
if (interface_to_usbdev(usb->intf)->speed == USB_SPEED_HIGH) {
rx->usb_packet_size = 512;
} else {
rx->usb_packet_size = 64;
}
ZD_ASSERT(rx->fragment_length == 0);
+ INIT_DELAYED_WORK(&rx->idle_work, zd_rx_idle_timer_handler);
}
static inline void init_usb_tx(struct zd_usb *usb)
{
struct zd_usb_tx *tx = &usb->tx;
spin_lock_init(&tx->lock);
- tx->enabled = 0;
+ atomic_set(&tx->enabled, 0);
tx->stopped = 0;
- INIT_LIST_HEAD(&tx->free_urb_list);
+ skb_queue_head_init(&tx->submitted_skbs);
+ init_usb_anchor(&tx->submitted);
tx->submitted_urbs = 0;
+ tx->watchdog_enabled = 0;
+ INIT_DELAYED_WORK(&tx->watchdog_work, zd_tx_watchdog_handler);
}
void zd_usb_init(struct zd_usb *usb, struct ieee80211_hw *hw,
memset(usb, 0, sizeof(*usb));
usb->intf = usb_get_intf(intf);
usb_set_intfdata(usb->intf, hw);
+ init_usb_anchor(&usb->submitted_cmds);
init_usb_interrupt(usb);
init_usb_tx(usb);
init_usb_rx(usb);
ieee80211_unregister_hw(hw);
/* Just in case something has gone wrong! */
+ zd_usb_disable_tx(usb);
zd_usb_disable_rx(usb);
zd_usb_disable_int(usb);
dev_dbg(&intf->dev, "disconnected\n");
}
+static void zd_usb_resume(struct zd_usb *usb)
+{
+ struct zd_mac *mac = zd_usb_to_mac(usb);
+ int r;
+
+ dev_dbg_f(zd_usb_dev(usb), "\n");
+
+ r = zd_op_start(zd_usb_to_hw(usb));
+ if (r < 0) {
+ dev_warn(zd_usb_dev(usb), "Device resume failed "
+ "with error code %d. Retrying...\n", r);
+ if (usb->was_running)
+ set_bit(ZD_DEVICE_RUNNING, &mac->flags);
+ usb_queue_reset_device(usb->intf);
+ return;
+ }
+
+ if (mac->type != NL80211_IFTYPE_UNSPECIFIED) {
+ r = zd_restore_settings(mac);
+ if (r < 0) {
+ dev_dbg(zd_usb_dev(usb),
+ "failed to restore settings, %d\n", r);
+ return;
+ }
+ }
+}
+
+static void zd_usb_stop(struct zd_usb *usb)
+{
+ dev_dbg_f(zd_usb_dev(usb), "\n");
+
+ zd_op_stop(zd_usb_to_hw(usb));
+
+ zd_usb_disable_tx(usb);
+ zd_usb_disable_rx(usb);
+ zd_usb_disable_int(usb);
+
+ usb->initialized = 0;
+}
+
+static int pre_reset(struct usb_interface *intf)
+{
+ struct ieee80211_hw *hw = usb_get_intfdata(intf);
+ struct zd_mac *mac;
+ struct zd_usb *usb;
+
+ if (!hw || intf->condition != USB_INTERFACE_BOUND)
+ return 0;
+
+ mac = zd_hw_mac(hw);
+ usb = &mac->chip.usb;
+
+ usb->was_running = test_bit(ZD_DEVICE_RUNNING, &mac->flags);
+
+ zd_usb_stop(usb);
+
+ mutex_lock(&mac->chip.mutex);
+ return 0;
+}
+
+static int post_reset(struct usb_interface *intf)
+{
+ struct ieee80211_hw *hw = usb_get_intfdata(intf);
+ struct zd_mac *mac;
+ struct zd_usb *usb;
+
+ if (!hw || intf->condition != USB_INTERFACE_BOUND)
+ return 0;
+
+ mac = zd_hw_mac(hw);
+ usb = &mac->chip.usb;
+
+ mutex_unlock(&mac->chip.mutex);
+
+ if (usb->was_running)
+ zd_usb_resume(usb);
+ return 0;
+}
+
static struct usb_driver driver = {
.name = KBUILD_MODNAME,
.id_table = usb_ids,
.probe = probe,
.disconnect = disconnect,
+ .pre_reset = pre_reset,
+ .post_reset = post_reset,
};
struct workqueue_struct *zd_workqueue;
return -EWOULDBLOCK;
}
if (!usb_int_enabled(usb)) {
- dev_dbg_f(zd_usb_dev(usb),
+ dev_dbg_f(zd_usb_dev(usb),
"error: usb interrupt not enabled\n");
return -EWOULDBLOCK;
}
+ ZD_ASSERT(mutex_is_locked(&zd_usb_to_chip(usb)->mutex));
+ BUILD_BUG_ON(sizeof(struct usb_req_read_regs) + USB_MAX_IOREAD16_COUNT *
+ sizeof(__le16) > sizeof(usb->req_buf));
+ BUG_ON(sizeof(struct usb_req_read_regs) + count * sizeof(__le16) >
+ sizeof(usb->req_buf));
+
req_len = sizeof(struct usb_req_read_regs) + count * sizeof(__le16);
- req = kmalloc(req_len, GFP_KERNEL);
- if (!req)
- return -ENOMEM;
+ req = (void *)usb->req_buf;
+
req->id = cpu_to_le16(USB_REQ_READ_REGS);
for (i = 0; i < count; i++)
req->addr[i] = cpu_to_le16((u16)addresses[i]);
udev = zd_usb_to_usbdev(usb);
prepare_read_regs_int(usb);
- r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, EP_REGS_OUT),
- req, req_len, &actual_req_len, 1000 /* ms */);
+ r = usb_interrupt_msg(udev, usb_sndintpipe(udev, EP_REGS_OUT),
+ req, req_len, &actual_req_len, 50 /* ms */);
if (r) {
dev_dbg_f(zd_usb_dev(usb),
- "error in usb_bulk_msg(). Error number %d\n", r);
+ "error in usb_interrupt_msg(). Error number %d\n", r);
goto error;
}
if (req_len != actual_req_len) {
- dev_dbg_f(zd_usb_dev(usb), "error in usb_bulk_msg()\n"
+ dev_dbg_f(zd_usb_dev(usb), "error in usb_interrupt_msg()\n"
" req_len %d != actual_req_len %d\n",
req_len, actual_req_len);
r = -EIO;
}
timeout = wait_for_completion_timeout(&usb->intr.read_regs.completion,
- msecs_to_jiffies(1000));
+ msecs_to_jiffies(50));
if (!timeout) {
disable_read_regs_int(usb);
dev_dbg_f(zd_usb_dev(usb), "read timed out\n");
r = get_results(usb, values, req, count);
error:
- kfree(req);
return r;
}
-int zd_usb_iowrite16v(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs,
- unsigned int count)
+static void iowrite16v_urb_complete(struct urb *urb)
+{
+ struct zd_usb *usb = urb->context;
+
+ if (urb->status && !usb->cmd_error)
+ usb->cmd_error = urb->status;
+}
+
+static int zd_submit_waiting_urb(struct zd_usb *usb, bool last)
+{
+ int r = 0;
+ struct urb *urb = usb->urb_async_waiting;
+
+ if (!urb)
+ return 0;
+
+ usb->urb_async_waiting = NULL;
+
+ if (!last)
+ urb->transfer_flags |= URB_NO_INTERRUPT;
+
+ usb_anchor_urb(urb, &usb->submitted_cmds);
+ r = usb_submit_urb(urb, GFP_KERNEL);
+ if (r) {
+ usb_unanchor_urb(urb);
+ dev_dbg_f(zd_usb_dev(usb),
+ "error in usb_submit_urb(). Error number %d\n", r);
+ goto error;
+ }
+
+ /* fall-through with r == 0 */
+error:
+ usb_free_urb(urb);
+ return r;
+}
+
+void zd_usb_iowrite16v_async_start(struct zd_usb *usb)
+{
+ ZD_ASSERT(usb_anchor_empty(&usb->submitted_cmds));
+ ZD_ASSERT(usb->urb_async_waiting == NULL);
+ ZD_ASSERT(!usb->in_async);
+
+ ZD_ASSERT(mutex_is_locked(&zd_usb_to_chip(usb)->mutex));
+
+ usb->in_async = 1;
+ usb->cmd_error = 0;
+ usb->urb_async_waiting = NULL;
+}
+
+int zd_usb_iowrite16v_async_end(struct zd_usb *usb, unsigned int timeout)
+{
+ int r;
+
+ ZD_ASSERT(mutex_is_locked(&zd_usb_to_chip(usb)->mutex));
+ ZD_ASSERT(usb->in_async);
+
+ /* Submit last iowrite16v URB */
+ r = zd_submit_waiting_urb(usb, true);
+ if (r) {
+ dev_dbg_f(zd_usb_dev(usb),
+ "error in zd_submit_waiting_usb(). "
+ "Error number %d\n", r);
+
+ usb_kill_anchored_urbs(&usb->submitted_cmds);
+ goto error;
+ }
+
+ if (timeout)
+ timeout = usb_wait_anchor_empty_timeout(&usb->submitted_cmds,
+ timeout);
+ if (!timeout) {
+ usb_kill_anchored_urbs(&usb->submitted_cmds);
+ if (usb->cmd_error == -ENOENT) {
+ dev_dbg_f(zd_usb_dev(usb), "timed out");
+ r = -ETIMEDOUT;
+ goto error;
+ }
+ }
+
+ r = usb->cmd_error;
+error:
+ usb->in_async = 0;
+ return r;
+}
+
+int zd_usb_iowrite16v_async(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs,
+ unsigned int count)
{
int r;
struct usb_device *udev;
struct usb_req_write_regs *req = NULL;
- int i, req_len, actual_req_len;
+ int i, req_len;
+ struct urb *urb;
+ struct usb_host_endpoint *ep;
+
+ ZD_ASSERT(mutex_is_locked(&zd_usb_to_chip(usb)->mutex));
+ ZD_ASSERT(usb->in_async);
if (count == 0)
return 0;
return -EWOULDBLOCK;
}
+ udev = zd_usb_to_usbdev(usb);
+
+ ep = usb_pipe_endpoint(udev, usb_sndintpipe(udev, EP_REGS_OUT));
+ if (!ep)
+ return -ENOENT;
+
+ urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!urb)
+ return -ENOMEM;
+
req_len = sizeof(struct usb_req_write_regs) +
count * sizeof(struct reg_data);
req = kmalloc(req_len, GFP_KERNEL);
- if (!req)
- return -ENOMEM;
+ if (!req) {
+ r = -ENOMEM;
+ goto error;
+ }
req->id = cpu_to_le16(USB_REQ_WRITE_REGS);
for (i = 0; i < count; i++) {
rw->value = cpu_to_le16(ioreqs[i].value);
}
- udev = zd_usb_to_usbdev(usb);
- r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, EP_REGS_OUT),
- req, req_len, &actual_req_len, 1000 /* ms */);
+ usb_fill_int_urb(urb, udev, usb_sndintpipe(udev, EP_REGS_OUT),
+ req, req_len, iowrite16v_urb_complete, usb,
+ ep->desc.bInterval);
+ urb->transfer_flags |= URB_FREE_BUFFER | URB_SHORT_NOT_OK;
+
+ /* Submit previous URB */
+ r = zd_submit_waiting_urb(usb, false);
if (r) {
dev_dbg_f(zd_usb_dev(usb),
- "error in usb_bulk_msg(). Error number %d\n", r);
- goto error;
- }
- if (req_len != actual_req_len) {
- dev_dbg_f(zd_usb_dev(usb),
- "error in usb_bulk_msg()"
- " req_len %d != actual_req_len %d\n",
- req_len, actual_req_len);
- r = -EIO;
+ "error in zd_submit_waiting_usb(). "
+ "Error number %d\n", r);
goto error;
}
- /* FALL-THROUGH with r == 0 */
+ /* Delay submit so that URB_NO_INTERRUPT flag can be set for all URBs
+ * of currect batch except for very last.
+ */
+ usb->urb_async_waiting = urb;
+ return 0;
error:
- kfree(req);
+ usb_free_urb(urb);
return r;
}
+int zd_usb_iowrite16v(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs,
+ unsigned int count)
+{
+ int r;
+
+ zd_usb_iowrite16v_async_start(usb);
+ r = zd_usb_iowrite16v_async(usb, ioreqs, count);
+ if (r) {
+ zd_usb_iowrite16v_async_end(usb, 0);
+ return r;
+ }
+ return zd_usb_iowrite16v_async_end(usb, 50 /* ms */);
+}
+
int zd_usb_rfwrite(struct zd_usb *usb, u32 value, u8 bits)
{
int r;
if (r) {
dev_dbg_f(zd_usb_dev(usb),
"error %d: Couldn't read CR203\n", r);
- goto out;
+ return r;
}
bit_value_template &= ~(RF_IF_LE|RF_CLK|RF_DATA);
+ ZD_ASSERT(mutex_is_locked(&zd_usb_to_chip(usb)->mutex));
+ BUILD_BUG_ON(sizeof(struct usb_req_rfwrite) +
+ USB_MAX_RFWRITE_BIT_COUNT * sizeof(__le16) >
+ sizeof(usb->req_buf));
+ BUG_ON(sizeof(struct usb_req_rfwrite) + bits * sizeof(__le16) >
+ sizeof(usb->req_buf));
+
req_len = sizeof(struct usb_req_rfwrite) + bits * sizeof(__le16);
- req = kmalloc(req_len, GFP_KERNEL);
- if (!req)
- return -ENOMEM;
+ req = (void *)usb->req_buf;
req->id = cpu_to_le16(USB_REQ_WRITE_RF);
/* 1: 3683a, but not used in ZYDAS driver */
}
udev = zd_usb_to_usbdev(usb);
- r = usb_bulk_msg(udev, usb_sndbulkpipe(udev, EP_REGS_OUT),
- req, req_len, &actual_req_len, 1000 /* ms */);
+ r = usb_interrupt_msg(udev, usb_sndintpipe(udev, EP_REGS_OUT),
+ req, req_len, &actual_req_len, 50 /* ms */);
if (r) {
dev_dbg_f(zd_usb_dev(usb),
- "error in usb_bulk_msg(). Error number %d\n", r);
+ "error in usb_interrupt_msg(). Error number %d\n", r);
goto out;
}
if (req_len != actual_req_len) {
- dev_dbg_f(zd_usb_dev(usb), "error in usb_bulk_msg()"
+ dev_dbg_f(zd_usb_dev(usb), "error in usb_interrupt_msg()"
" req_len %d != actual_req_len %d\n",
req_len, actual_req_len);
r = -EIO;
/* FALL-THROUGH with r == 0 */
out:
- kfree(req);
return r;
}
git.openpandora.org / pandora-kernel.git / blobdiff