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path: root/drivers/usb/wusbcore/wa-hc.h
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Diffstat (limited to 'drivers/usb/wusbcore/wa-hc.h')
-rw-r--r--drivers/usb/wusbcore/wa-hc.h98
1 files changed, 81 insertions, 17 deletions
diff --git a/drivers/usb/wusbcore/wa-hc.h b/drivers/usb/wusbcore/wa-hc.h
index d6bea3e0b54..f2a8d29e17b 100644
--- a/drivers/usb/wusbcore/wa-hc.h
+++ b/drivers/usb/wusbcore/wa-hc.h
@@ -36,7 +36,7 @@
*
* hcd glue with the USB API Host Controller Interface API.
*
- * nep Notification EndPoint managent: collect notifications
+ * nep Notification EndPoint management: collect notifications
* and queue them with the workqueue daemon.
*
* Handle notifications as coming from the NEP. Sends them
@@ -91,6 +91,7 @@
struct wusbhc;
struct wahc;
extern void wa_urb_enqueue_run(struct work_struct *ws);
+extern void wa_process_errored_transfers_run(struct work_struct *ws);
/**
* RPipe instance
@@ -116,11 +117,38 @@ struct wa_rpipe {
struct wahc *wa;
spinlock_t seg_lock;
struct list_head seg_list;
+ struct list_head list_node;
atomic_t segs_available;
u8 buffer[1]; /* For reads/writes on USB */
};
+enum wa_dti_state {
+ WA_DTI_TRANSFER_RESULT_PENDING,
+ WA_DTI_ISOC_PACKET_STATUS_PENDING,
+ WA_DTI_BUF_IN_DATA_PENDING
+};
+
+enum wa_quirks {
+ /*
+ * The Alereon HWA expects the data frames in isochronous transfer
+ * requests to be concatenated and not sent as separate packets.
+ */
+ WUSB_QUIRK_ALEREON_HWA_CONCAT_ISOC = 0x01,
+ /*
+ * The Alereon HWA can be instructed to not send transfer notifications
+ * as an optimization.
+ */
+ WUSB_QUIRK_ALEREON_HWA_DISABLE_XFER_NOTIFICATIONS = 0x02,
+};
+
+enum wa_vendor_specific_requests {
+ WA_REQ_ALEREON_DISABLE_XFER_NOTIFICATIONS = 0x4C,
+ WA_REQ_ALEREON_FEATURE_SET = 0x01,
+ WA_REQ_ALEREON_FEATURE_CLEAR = 0x00,
+};
+
+#define WA_MAX_BUF_IN_URBS 4
/**
* Instance of a HWA Host Controller
*
@@ -129,7 +157,7 @@ struct wa_rpipe {
*
* @wa_descr Can be accessed without locking because it is in
* the same area where the device descriptors were
- * read, so it is guaranteed to exist umodified while
+ * read, so it is guaranteed to exist unmodified while
* the device exists.
*
* Endianess has been converted to CPU's.
@@ -152,8 +180,8 @@ struct wa_rpipe {
* submitted from an atomic context).
*
* FIXME: this needs to be layered up: a wusbhc layer (for sharing
- * comonalities with WHCI), a wa layer (for sharing
- * comonalities with DWA-RC).
+ * commonalities with WHCI), a wa layer (for sharing
+ * commonalities with DWA-RC).
*/
struct wahc {
struct usb_device *usb_dev;
@@ -177,27 +205,51 @@ struct wahc {
u16 rpipes;
unsigned long *rpipe_bm; /* rpipe usage bitmap */
- spinlock_t rpipe_bm_lock; /* protect rpipe_bm */
+ struct list_head rpipe_delayed_list; /* delayed RPIPES. */
+ spinlock_t rpipe_lock; /* protect rpipe_bm and delayed list */
struct mutex rpipe_mutex; /* assigning resources to endpoints */
+ /*
+ * dti_state is used to track the state of the dti_urb. When dti_state
+ * is WA_DTI_ISOC_PACKET_STATUS_PENDING, dti_isoc_xfer_in_progress and
+ * dti_isoc_xfer_seg identify which xfer the incoming isoc packet
+ * status refers to.
+ */
+ enum wa_dti_state dti_state;
+ u32 dti_isoc_xfer_in_progress;
+ u8 dti_isoc_xfer_seg;
struct urb *dti_urb; /* URB for reading xfer results */
- struct urb *buf_in_urb; /* URB for reading data in */
+ /* URBs for reading data in */
+ struct urb buf_in_urbs[WA_MAX_BUF_IN_URBS];
+ int active_buf_in_urbs; /* number of buf_in_urbs active. */
struct edc dti_edc; /* DTI error density counter */
- struct wa_xfer_result *xfer_result; /* real size = dti_ep maxpktsize */
- size_t xfer_result_size;
+ void *dti_buf;
+ size_t dti_buf_size;
+
+ unsigned long dto_in_use; /* protect dto endoint serialization */
s32 status; /* For reading status */
struct list_head xfer_list;
struct list_head xfer_delayed_list;
+ struct list_head xfer_errored_list;
+ /*
+ * lock for the above xfer lists. Can be taken while a xfer->lock is
+ * held but not in the reverse order.
+ */
spinlock_t xfer_list_lock;
- struct work_struct xfer_work;
+ struct work_struct xfer_enqueue_work;
+ struct work_struct xfer_error_work;
atomic_t xfer_id_count;
+
+ kernel_ulong_t quirks;
};
-extern int wa_create(struct wahc *wa, struct usb_interface *iface);
+extern int wa_create(struct wahc *wa, struct usb_interface *iface,
+ kernel_ulong_t);
extern void __wa_destroy(struct wahc *wa);
+extern int wa_dti_start(struct wahc *wa);
void wa_reset_all(struct wahc *wa);
@@ -232,21 +284,32 @@ static inline void wa_nep_disarm(struct wahc *wa)
/* RPipes */
static inline void wa_rpipe_init(struct wahc *wa)
{
- spin_lock_init(&wa->rpipe_bm_lock);
+ INIT_LIST_HEAD(&wa->rpipe_delayed_list);
+ spin_lock_init(&wa->rpipe_lock);
mutex_init(&wa->rpipe_mutex);
}
static inline void wa_init(struct wahc *wa)
{
+ int index;
+
edc_init(&wa->nep_edc);
atomic_set(&wa->notifs_queued, 0);
+ wa->dti_state = WA_DTI_TRANSFER_RESULT_PENDING;
wa_rpipe_init(wa);
edc_init(&wa->dti_edc);
INIT_LIST_HEAD(&wa->xfer_list);
INIT_LIST_HEAD(&wa->xfer_delayed_list);
+ INIT_LIST_HEAD(&wa->xfer_errored_list);
spin_lock_init(&wa->xfer_list_lock);
- INIT_WORK(&wa->xfer_work, wa_urb_enqueue_run);
+ INIT_WORK(&wa->xfer_enqueue_work, wa_urb_enqueue_run);
+ INIT_WORK(&wa->xfer_error_work, wa_process_errored_transfers_run);
+ wa->dto_in_use = 0;
atomic_set(&wa->xfer_id_count, 1);
+ /* init the buf in URBs */
+ for (index = 0; index < WA_MAX_BUF_IN_URBS; ++index)
+ usb_init_urb(&(wa->buf_in_urbs[index]));
+ wa->active_buf_in_urbs = 0;
}
/**
@@ -269,6 +332,8 @@ static inline void rpipe_put(struct wa_rpipe *rpipe)
}
extern void rpipe_ep_disable(struct wahc *, struct usb_host_endpoint *);
+extern void rpipe_clear_feature_stalled(struct wahc *,
+ struct usb_host_endpoint *);
extern int wa_rpipes_create(struct wahc *);
extern void wa_rpipes_destroy(struct wahc *);
static inline void rpipe_avail_dec(struct wa_rpipe *rpipe)
@@ -289,7 +354,7 @@ static inline int rpipe_avail_inc(struct wa_rpipe *rpipe)
/* Transferring data */
extern int wa_urb_enqueue(struct wahc *, struct usb_host_endpoint *,
struct urb *, gfp_t);
-extern int wa_urb_dequeue(struct wahc *, struct urb *);
+extern int wa_urb_dequeue(struct wahc *, struct urb *, int);
extern void wa_handle_notif_xfer(struct wahc *, struct wa_notif_hdr *);
@@ -302,7 +367,7 @@ extern void wa_handle_notif_xfer(struct wahc *, struct wa_notif_hdr *);
* it...no RC specific function is called...unless I miss
* something.
*
- * FIXME: has to go away in favour of an 'struct' hcd based sollution
+ * FIXME: has to go away in favour of a 'struct' hcd based solution
*/
static inline struct wahc *wa_get(struct wahc *wa)
{
@@ -323,7 +388,7 @@ static inline int __wa_feature(struct wahc *wa, unsigned op, u16 feature)
USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
feature,
wa->usb_iface->cur_altsetting->desc.bInterfaceNumber,
- NULL, 0, 1000 /* FIXME: arbitrary */);
+ NULL, 0, USB_CTRL_SET_TIMEOUT);
}
@@ -357,8 +422,7 @@ s32 __wa_get_status(struct wahc *wa)
USB_REQ_GET_STATUS,
USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
0, wa->usb_iface->cur_altsetting->desc.bInterfaceNumber,
- &wa->status, sizeof(wa->status),
- 1000 /* FIXME: arbitrary */);
+ &wa->status, sizeof(wa->status), USB_CTRL_GET_TIMEOUT);
if (result >= 0)
result = wa->status;
return result;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 08:45:33 +0000