*/
struct wa_seg {
struct urb tr_urb; /* transfer request urb. */
+ struct urb *isoc_pack_desc_urb; /* for isoc packet descriptor. */
struct urb *dto_urb; /* for data output. */
struct list_head list_node; /* for rpipe->req_list */
struct wa_xfer *xfer; /* out xfer */
enum wa_seg_status status;
ssize_t result; /* bytes xfered or error */
struct wa_xfer_hdr xfer_hdr;
- u8 xfer_extra[]; /* xtra space for xfer_hdr_ctl */
};
static inline void wa_seg_init(struct wa_seg *seg)
/*
* Destroy a transfer structure
*
- * Note that freeing xfer->seg[cnt]->urb will free the containing
+ * Note that freeing xfer->seg[cnt]->tr_urb will free the containing
* xfer->seg[cnt] memory that was allocated by __wa_xfer_setup_segs.
*/
static void wa_xfer_destroy(struct kref *_xfer)
if (xfer->seg) {
unsigned cnt;
for (cnt = 0; cnt < xfer->segs; cnt++) {
- if (xfer->seg[cnt]) {
- if (xfer->seg[cnt]->dto_urb) {
- kfree(xfer->seg[cnt]->dto_urb->sg);
- usb_free_urb(xfer->seg[cnt]->dto_urb);
+ struct wa_seg *seg = xfer->seg[cnt];
+ if (seg) {
+ usb_free_urb(seg->isoc_pack_desc_urb);
+ if (seg->dto_urb) {
+ kfree(seg->dto_urb->sg);
+ usb_free_urb(seg->dto_urb);
}
- usb_free_urb(&xfer->seg[cnt]->tr_urb);
+ usb_free_urb(&seg->tr_urb);
}
}
kfree(xfer->seg);
goto out;
}
urb->actual_length += seg->result;
- if (seg->result < xfer->seg_size
+ if (!(usb_pipeisoc(xfer->urb->pipe))
+ && seg->result < xfer->seg_size
&& cnt != xfer->segs-1)
found_short = 1;
dev_dbg(dev, "xfer %p ID %08X#%u: DONE short %d "
result = sizeof(struct wa_xfer_bi);
break;
case USB_ENDPOINT_XFER_ISOC:
- dev_err(dev, "FIXME: ISOC not implemented\n");
- result = -ENOSYS;
- goto error;
+ if (usb_pipeout(urb->pipe)) {
+ *pxfer_type = WA_XFER_TYPE_ISO;
+ result = sizeof(struct wa_xfer_hwaiso);
+ } else {
+ dev_err(dev, "FIXME: ISOC IN not implemented\n");
+ result = -ENOSYS;
+ goto error;
+ }
+ break;
default:
/* never happens */
BUG();
result = -EINVAL; /* shut gcc up */
- };
+ }
xfer->is_inbound = urb->pipe & USB_DIR_IN ? 1 : 0;
xfer->is_dma = urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP ? 1 : 0;
- xfer->seg_size = le16_to_cpu(rpipe->descr.wBlocks)
- * 1 << (xfer->wa->wa_descr->bRPipeBlockSize - 1);
- /* Compute the segment size and make sure it is a multiple of
- * the maxpktsize (WUSB1.0[8.3.3.1])...not really too much of
- * a check (FIXME) */
+
maxpktsize = le16_to_cpu(rpipe->descr.wMaxPacketSize);
- if (xfer->seg_size < maxpktsize) {
- dev_err(dev, "HW BUG? seg_size %zu smaller than maxpktsize "
- "%zu\n", xfer->seg_size, maxpktsize);
- result = -EINVAL;
- goto error;
- }
- xfer->seg_size = (xfer->seg_size / maxpktsize) * maxpktsize;
- xfer->segs = DIV_ROUND_UP(urb->transfer_buffer_length, xfer->seg_size);
- if (xfer->segs >= WA_SEGS_MAX) {
- dev_err(dev, "BUG? ops, number of segments %d bigger than %d\n",
- (int)(urb->transfer_buffer_length / xfer->seg_size),
- WA_SEGS_MAX);
- result = -EINVAL;
- goto error;
+ if ((rpipe->descr.bmAttribute & 0x3) == USB_ENDPOINT_XFER_ISOC) {
+ xfer->seg_size = maxpktsize;
+ xfer->segs = urb->number_of_packets;
+ } else {
+ xfer->seg_size = le16_to_cpu(rpipe->descr.wBlocks)
+ * 1 << (xfer->wa->wa_descr->bRPipeBlockSize - 1);
+ /* Compute the segment size and make sure it is a multiple of
+ * the maxpktsize (WUSB1.0[8.3.3.1])...not really too much of
+ * a check (FIXME) */
+ if (xfer->seg_size < maxpktsize) {
+ dev_err(dev,
+ "HW BUG? seg_size %zu smaller than maxpktsize %zu\n",
+ xfer->seg_size, maxpktsize);
+ result = -EINVAL;
+ goto error;
+ }
+ xfer->seg_size = (xfer->seg_size / maxpktsize) * maxpktsize;
+ xfer->segs = DIV_ROUND_UP(urb->transfer_buffer_length,
+ xfer->seg_size);
+ if (xfer->segs >= WA_SEGS_MAX) {
+ dev_err(dev, "BUG? oops, number of segments %d bigger than %d\n",
+ (urb->transfer_buffer_length/xfer->seg_size),
+ WA_SEGS_MAX);
+ result = -EINVAL;
+ goto error;
+ }
+ if (xfer->segs == 0 && *pxfer_type == WA_XFER_TYPE_CTL)
+ xfer->segs = 1;
}
- if (xfer->segs == 0 && *pxfer_type == WA_XFER_TYPE_CTL)
- xfer->segs = 1;
error:
return result;
}
}
case WA_XFER_TYPE_BI:
break;
- case WA_XFER_TYPE_ISO:
- printk(KERN_ERR "FIXME: ISOC not implemented\n");
+ case WA_XFER_TYPE_ISO: {
+ struct wa_xfer_hwaiso *xfer_iso =
+ container_of(xfer_hdr0, struct wa_xfer_hwaiso, hdr);
+ struct wa_xfer_packet_info_hwaiso *packet_desc =
+ ((void *)xfer_iso) + xfer_hdr_size;
+ struct usb_iso_packet_descriptor *iso_frame_desc =
+ &(xfer->urb->iso_frame_desc[0]);
+ /* populate the isoc section of the transfer request. */
+ xfer_iso->dwNumOfPackets = cpu_to_le32(1);
+ /*
+ * populate isoc packet descriptor. This assumes 1
+ * packet per segment.
+ */
+ packet_desc->wLength = cpu_to_le16(sizeof(*packet_desc) +
+ sizeof(packet_desc->PacketLength[0]));
+ packet_desc->bPacketType = WA_XFER_ISO_PACKET_INFO;
+ packet_desc->PacketLength[0] =
+ cpu_to_le16(iso_frame_desc->length);
+ break;
+ }
default:
BUG();
};
}
}
+/*
+ * Callback for the isoc packet descriptor phase of the segment request
+ *
+ * Check wa_seg_tr_cb(); most comments also apply here because this
+ * function does almost the same thing and they work closely
+ * together.
+ *
+ * If the seg request has failed but this phase has succeeded,
+ * wa_seg_tr_cb() has already failed the segment and moved the
+ * status to WA_SEG_ERROR, so this will go through 'case 0' and
+ * effectively do nothing.
+ */
+static void wa_seg_iso_pack_desc_cb(struct urb *urb)
+{
+ struct wa_seg *seg = urb->context;
+ struct wa_xfer *xfer = seg->xfer;
+ struct wahc *wa;
+ struct device *dev;
+ struct wa_rpipe *rpipe;
+ unsigned long flags;
+ unsigned rpipe_ready = 0;
+ u8 done = 0;
+
+ switch (urb->status) {
+ case 0:
+ spin_lock_irqsave(&xfer->lock, flags);
+ wa = xfer->wa;
+ dev = &wa->usb_iface->dev;
+ dev_dbg(dev, "iso xfer %p#%u: packet descriptor done\n",
+ xfer, seg->index);
+ if (xfer->is_inbound && seg->status < WA_SEG_PENDING)
+ seg->status = WA_SEG_PENDING;
+ spin_unlock_irqrestore(&xfer->lock, flags);
+ break;
+ case -ECONNRESET: /* URB unlinked; no need to do anything */
+ case -ENOENT: /* as it was done by the who unlinked us */
+ break;
+ default: /* Other errors ... */
+ spin_lock_irqsave(&xfer->lock, flags);
+ wa = xfer->wa;
+ dev = &wa->usb_iface->dev;
+ rpipe = xfer->ep->hcpriv;
+ pr_err_ratelimited("iso xfer %p#%u: packet descriptor error %d\n",
+ xfer, seg->index, urb->status);
+ if (edc_inc(&wa->nep_edc, EDC_MAX_ERRORS,
+ EDC_ERROR_TIMEFRAME)){
+ dev_err(dev, "DTO: URB max acceptable errors exceeded, resetting device\n");
+ wa_reset_all(wa);
+ }
+ if (seg->status != WA_SEG_ERROR) {
+ usb_unlink_urb(seg->dto_urb);
+ seg->status = WA_SEG_ERROR;
+ seg->result = urb->status;
+ xfer->segs_done++;
+ __wa_xfer_abort(xfer);
+ rpipe_ready = rpipe_avail_inc(rpipe);
+ done = __wa_xfer_is_done(xfer);
+ }
+ spin_unlock_irqrestore(&xfer->lock, flags);
+ if (done)
+ wa_xfer_completion(xfer);
+ if (rpipe_ready)
+ wa_xfer_delayed_run(rpipe);
+ }
+}
+
/*
* Callback for the segment request
*
* We have to check before setting the status to WA_SEG_PENDING
* because sometimes the xfer result callback arrives before this
* callback (geeeeeeze), so it might happen that we are already in
- * another state. As well, we don't set it if the transfer is inbound,
+ * another state. As well, we don't set it if the transfer is not inbound,
* as in that case, wa_seg_dto_cb will do it when the OUT data phase
* finishes.
*/
spin_lock_irqsave(&xfer->lock, flags);
wa = xfer->wa;
dev = &wa->usb_iface->dev;
- dev_dbg(dev, "xfer %p#%u: request done\n", xfer, seg->index);
- if (xfer->is_inbound && seg->status < WA_SEG_PENDING)
+ dev_dbg(dev, "xfer %p ID 0x%08X#%u: request done\n",
+ xfer, wa_xfer_id(xfer), seg->index);
+ if (xfer->is_inbound &&
+ seg->status < WA_SEG_PENDING &&
+ !(usb_pipeisoc(xfer->urb->pipe)))
seg->status = WA_SEG_PENDING;
spin_unlock_irqrestore(&xfer->lock, flags);
break;
"exceeded, resetting device\n");
wa_reset_all(wa);
}
+ usb_unlink_urb(seg->isoc_pack_desc_urb);
usb_unlink_urb(seg->dto_urb);
seg->status = WA_SEG_ERROR;
seg->result = urb->status;
return out_sg;
}
+/*
+ * Populate DMA buffer info for the isoc dto urb.
+ */
+static void __wa_populate_dto_urb_iso(struct wa_xfer *xfer,
+ struct wa_seg *seg, int curr_iso_frame)
+{
+ /*
+ * dto urb buffer address and size pulled from
+ * iso_frame_desc.
+ */
+ seg->dto_urb->transfer_dma = xfer->urb->transfer_dma +
+ xfer->urb->iso_frame_desc[curr_iso_frame].offset;
+ seg->dto_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+ seg->dto_urb->sg = NULL;
+ seg->dto_urb->num_sgs = 0;
+ seg->dto_urb->transfer_buffer_length =
+ xfer->urb->iso_frame_desc[curr_iso_frame].length;
+}
+
/*
* Populate buffer ptr and size, DMA buffer or SG list for the dto urb.
*/
struct usb_device *usb_dev = xfer->wa->usb_dev;
const struct usb_endpoint_descriptor *dto_epd = xfer->wa->dto_epd;
struct wa_seg *seg;
- size_t buf_itr, buf_size, buf_itr_size;
+ size_t buf_itr, buf_size, buf_itr_size, iso_pkt_descr_size = 0;
result = -ENOMEM;
xfer->seg = kcalloc(xfer->segs, sizeof(xfer->seg[0]), GFP_ATOMIC);
goto error_segs_kzalloc;
buf_itr = 0;
buf_size = xfer->urb->transfer_buffer_length;
+
+ if (usb_pipeisoc(xfer->urb->pipe)) {
+ /*
+ * This calculation assumes one isoc packet per xfer segment.
+ * It will need to be updated if this changes.
+ */
+ iso_pkt_descr_size = sizeof(struct wa_xfer_packet_info_hwaiso) +
+ sizeof(__le16);
+ alloc_size += iso_pkt_descr_size;
+ }
+
for (cnt = 0; cnt < xfer->segs; cnt++) {
seg = xfer->seg[cnt] = kmalloc(alloc_size, GFP_ATOMIC);
if (seg == NULL)
dto_epd->bEndpointAddress),
NULL, 0, wa_seg_dto_cb, seg);
- /* fill in the xfer buffer information. */
- result = __wa_populate_dto_urb(xfer, seg,
- buf_itr, buf_itr_size);
+ if (usb_pipeisoc(xfer->urb->pipe)) {
+ /* iso packet descriptor. */
+ seg->isoc_pack_desc_urb =
+ usb_alloc_urb(0, GFP_ATOMIC);
+ if (seg->isoc_pack_desc_urb == NULL)
+ goto error_iso_pack_desc_alloc;
+ /*
+ * The buffer for the isoc packet descriptor
+ * after the transfer request header in the
+ * segment object memory buffer.
+ */
+ usb_fill_bulk_urb(
+ seg->isoc_pack_desc_urb, usb_dev,
+ usb_sndbulkpipe(usb_dev,
+ dto_epd->bEndpointAddress),
+ (void *)(&seg->xfer_hdr) +
+ xfer_hdr_size,
+ iso_pkt_descr_size,
+ wa_seg_iso_pack_desc_cb, seg);
- if (result < 0)
- goto error_seg_outbound_populate;
+ /* fill in the xfer buffer information. */
+ __wa_populate_dto_urb_iso(xfer, seg, cnt);
+ } else {
+ /* fill in the xfer buffer information. */
+ result = __wa_populate_dto_urb(xfer, seg,
+ buf_itr, buf_itr_size);
+ if (result < 0)
+ goto error_seg_outbound_populate;
+
+ buf_itr += buf_itr_size;
+ buf_size -= buf_itr_size;
+ }
}
seg->status = WA_SEG_READY;
- buf_itr += buf_itr_size;
- buf_size -= buf_itr_size;
}
return 0;
* Use the fact that cnt is left at were it failed. The remaining
* segments will be cleaned up by wa_xfer_destroy.
*/
+error_iso_pack_desc_alloc:
error_seg_outbound_populate:
usb_free_urb(xfer->seg[cnt]->dto_urb);
error_dto_alloc:
wa_xfer_id_init(xfer);
__wa_xfer_setup_hdr0(xfer, xfer_hdr0, xfer_type, xfer_hdr_size);
- /* Fill remainig headers */
+ /* Fill remaining headers */
xfer_hdr = xfer_hdr0;
- transfer_size = urb->transfer_buffer_length;
- xfer_hdr0->dwTransferLength = transfer_size > xfer->seg_size ?
- xfer->seg_size : transfer_size;
- transfer_size -= xfer->seg_size;
- for (cnt = 1; cnt < xfer->segs; cnt++) {
- xfer_hdr = &xfer->seg[cnt]->xfer_hdr;
- memcpy(xfer_hdr, xfer_hdr0, xfer_hdr_size);
- xfer_hdr->bTransferSegment = cnt;
- xfer_hdr->dwTransferLength = transfer_size > xfer->seg_size ?
- cpu_to_le32(xfer->seg_size)
- : cpu_to_le32(transfer_size);
- xfer->seg[cnt]->status = WA_SEG_READY;
+ if (xfer_type == WA_XFER_TYPE_ISO) {
+ xfer_hdr0->dwTransferLength =
+ cpu_to_le32(xfer->urb->iso_frame_desc[0].length);
+ for (cnt = 1; cnt < xfer->segs; cnt++) {
+ struct usb_iso_packet_descriptor *iso_frame_desc =
+ &(xfer->urb->iso_frame_desc[cnt]);
+ struct wa_xfer_packet_info_hwaiso *packet_desc;
+
+ xfer_hdr = &xfer->seg[cnt]->xfer_hdr;
+ packet_desc = ((void *)xfer_hdr) + xfer_hdr_size;
+ /*
+ * Copy values from the 0th header and isoc packet
+ * descriptor. Segment specific values are set below.
+ */
+ memcpy(xfer_hdr, xfer_hdr0,
+ xfer_hdr_size + sizeof(*packet_desc));
+ xfer_hdr->bTransferSegment = cnt;
+ xfer_hdr->dwTransferLength =
+ cpu_to_le32(iso_frame_desc->length);
+ /* populate isoc packet descriptor length. */
+ packet_desc->PacketLength[0] =
+ cpu_to_le16(iso_frame_desc->length);
+
+ xfer->seg[cnt]->status = WA_SEG_READY;
+ }
+ } else {
+ transfer_size = urb->transfer_buffer_length;
+ xfer_hdr0->dwTransferLength = transfer_size > xfer->seg_size ?
+ cpu_to_le32(xfer->seg_size) :
+ cpu_to_le32(transfer_size);
transfer_size -= xfer->seg_size;
+ for (cnt = 1; cnt < xfer->segs; cnt++) {
+ xfer_hdr = &xfer->seg[cnt]->xfer_hdr;
+ memcpy(xfer_hdr, xfer_hdr0, xfer_hdr_size);
+ xfer_hdr->bTransferSegment = cnt;
+ xfer_hdr->dwTransferLength =
+ transfer_size > xfer->seg_size ?
+ cpu_to_le32(xfer->seg_size)
+ : cpu_to_le32(transfer_size);
+ xfer->seg[cnt]->status = WA_SEG_READY;
+ transfer_size -= xfer->seg_size;
+ }
}
xfer_hdr->bTransferSegment |= 0x80; /* this is the last segment */
result = 0;
/* submit the transfer request. */
result = usb_submit_urb(&seg->tr_urb, GFP_ATOMIC);
if (result < 0) {
- printk(KERN_ERR "xfer %p#%u: REQ submit failed: %d\n",
- xfer, seg->index, result);
+ pr_err("%s: xfer %p#%u: REQ submit failed: %d\n",
+ __func__, xfer, seg->index, result);
goto error_seg_submit;
}
+ /* submit the isoc packet descriptor if present. */
+ if (seg->isoc_pack_desc_urb) {
+ result = usb_submit_urb(seg->isoc_pack_desc_urb, GFP_ATOMIC);
+ if (result < 0) {
+ pr_err("%s: xfer %p#%u: ISO packet descriptor submit failed: %d\n",
+ __func__, xfer, seg->index, result);
+ goto error_iso_pack_desc_submit;
+ }
+ }
/* submit the out data if this is an out request. */
if (seg->dto_urb) {
result = usb_submit_urb(seg->dto_urb, GFP_ATOMIC);
if (result < 0) {
- printk(KERN_ERR "xfer %p#%u: DTO submit failed: %d\n",
- xfer, seg->index, result);
+ pr_err("%s: xfer %p#%u: DTO submit failed: %d\n",
+ __func__, xfer, seg->index, result);
goto error_dto_submit;
}
}
return 0;
error_dto_submit:
+ usb_unlink_urb(seg->isoc_pack_desc_urb);
+error_iso_pack_desc_submit:
usb_unlink_urb(&seg->tr_urb);
error_seg_submit:
seg->status = WA_SEG_ERROR;
/* FIXME: we ignore warnings, tally them for stats */
if (usb_status & 0x40) /* Warning?... */
usb_status = 0; /* ... pass */
- if (xfer->is_inbound) { /* IN data phase: read to buffer */
+ if (usb_pipeisoc(xfer->urb->pipe)) {
+ /* set up WA state to read the isoc packet status next. */
+ wa->dti_isoc_xfer_in_progress = wa_xfer_id(xfer);
+ wa->dti_isoc_xfer_seg = seg_idx;
+ wa->dti_state = WA_DTI_ISOC_PACKET_STATUS_PENDING;
+ } else if (xfer->is_inbound) { /* IN data phase: read to buffer */
seg->status = WA_SEG_DTI_PENDING;
BUG_ON(wa->buf_in_urb->status == -EINPROGRESS);
/* this should always be 0 before a resubmit. */
spin_unlock_irqrestore(&xfer->lock, flags);
}
+/*
+ * Process a isochronous packet status message
+ *
+ * inbound transfers: need to schedule a buf_in_urb read
+ */
+static void wa_process_iso_packet_status(struct wahc *wa, struct urb *urb)
+{
+ struct device *dev = &wa->usb_iface->dev;
+ struct wa_xfer_packet_status_hwaiso *packet_status;
+ struct wa_xfer *xfer;
+ unsigned long flags;
+ struct wa_seg *seg;
+ struct wa_rpipe *rpipe;
+ unsigned done = 0;
+ unsigned rpipe_ready = 0;
+ const int expected_size = sizeof(*packet_status) +
+ sizeof(packet_status->PacketStatus[0]);
+
+ /* We have a xfer result buffer; check it */
+ dev_dbg(dev, "DTI: isoc packet status %d bytes at %p\n",
+ urb->actual_length, urb->transfer_buffer);
+ if (urb->actual_length != expected_size) {
+ dev_err(dev, "DTI Error: isoc packet status--bad urb length (%d bytes vs %zu needed)\n",
+ urb->actual_length, expected_size);
+ goto error_parse_buffer;
+ }
+ packet_status = (struct wa_xfer_packet_status_hwaiso *)(wa->dti_buf);
+ if (le16_to_cpu(packet_status->wLength) != expected_size) {
+ dev_err(dev, "DTI Error: isoc packet status--bad length %u\n",
+ le16_to_cpu(packet_status->wLength));
+ goto error_parse_buffer;
+ }
+ if (packet_status->bPacketType != WA_XFER_ISO_PACKET_STATUS) {
+ dev_err(dev, "DTI Error: isoc packet status--bad type 0x%02x\n",
+ packet_status->bPacketType);
+ goto error_parse_buffer;
+ }
+ xfer = wa_xfer_get_by_id(wa, wa->dti_isoc_xfer_in_progress);
+ if (xfer == NULL) {
+ dev_err(dev, "DTI Error: isoc packet status--unknown xfer 0x%08x\n",
+ wa->dti_isoc_xfer_in_progress);
+ goto error_parse_buffer;
+ }
+ spin_lock_irqsave(&xfer->lock, flags);
+ if (unlikely(wa->dti_isoc_xfer_seg >= xfer->segs))
+ goto error_bad_seg;
+ seg = xfer->seg[wa->dti_isoc_xfer_seg];
+ rpipe = xfer->ep->hcpriv;
+
+ /* set urb isoc packet status and length. */
+ xfer->urb->iso_frame_desc[seg->index].status =
+ wa_xfer_status_to_errno(
+ le16_to_cpu(packet_status->PacketStatus[0].PacketStatus));
+ xfer->urb->iso_frame_desc[seg->index].actual_length =
+ le16_to_cpu(packet_status->PacketStatus[0].PacketLength);
+
+ if (!xfer->is_inbound) {
+ /* OUT transfer, complete it -- */
+ seg->status = WA_SEG_DONE;
+ xfer->segs_done++;
+ rpipe_ready = rpipe_avail_inc(rpipe);
+ done = __wa_xfer_is_done(xfer);
+ }
+ spin_unlock_irqrestore(&xfer->lock, flags);
+ wa->dti_state = WA_DTI_TRANSFER_RESULT_PENDING;
+ if (done)
+ wa_xfer_completion(xfer);
+ if (rpipe_ready)
+ wa_xfer_delayed_run(rpipe);
+ wa_xfer_put(xfer);
+ return;
+
+error_bad_seg:
+ spin_unlock_irqrestore(&xfer->lock, flags);
+ wa_xfer_put(xfer);
+error_parse_buffer:
+ return;
+}
+
/*
* Callback for the IN data phase
*
int result;
struct wahc *wa = urb->context;
struct device *dev = &wa->usb_iface->dev;
- struct wa_xfer_result *xfer_result;
u32 xfer_id;
- struct wa_xfer *xfer;
u8 usb_status;
BUG_ON(wa->dti_urb != urb);
switch (wa->dti_urb->status) {
case 0:
- /* We have a xfer result buffer; check it */
- dev_dbg(dev, "DTI: xfer result %d bytes at %p\n",
- urb->actual_length, urb->transfer_buffer);
- if (wa->dti_urb->actual_length != sizeof(*xfer_result)) {
- dev_err(dev, "DTI Error: xfer result--bad size "
- "xfer result (%d bytes vs %zu needed)\n",
- urb->actual_length, sizeof(*xfer_result));
- break;
- }
- xfer_result = (struct wa_xfer_result *)(wa->dti_buf);
- if (xfer_result->hdr.bLength != sizeof(*xfer_result)) {
- dev_err(dev, "DTI Error: xfer result--"
- "bad header length %u\n",
- xfer_result->hdr.bLength);
- break;
- }
- if (xfer_result->hdr.bNotifyType != WA_XFER_RESULT) {
- dev_err(dev, "DTI Error: xfer result--"
- "bad header type 0x%02x\n",
- xfer_result->hdr.bNotifyType);
- break;
- }
- usb_status = xfer_result->bTransferStatus & 0x3f;
- if (usb_status == WA_XFER_STATUS_NOT_FOUND)
- /* taken care of already */
- break;
- xfer_id = le32_to_cpu(xfer_result->dwTransferID);
- xfer = wa_xfer_get_by_id(wa, xfer_id);
- if (xfer == NULL) {
- /* FIXME: transaction might have been cancelled */
- dev_err(dev, "DTI Error: xfer result--"
- "unknown xfer 0x%08x (status 0x%02x)\n",
- xfer_id, usb_status);
- break;
+ if (wa->dti_state == WA_DTI_TRANSFER_RESULT_PENDING) {
+ struct wa_xfer_result *xfer_result;
+ struct wa_xfer *xfer;
+
+ /* We have a xfer result buffer; check it */
+ dev_dbg(dev, "DTI: xfer result %d bytes at %p\n",
+ urb->actual_length, urb->transfer_buffer);
+ if (urb->actual_length != sizeof(*xfer_result)) {
+ dev_err(dev, "DTI Error: xfer result--bad size xfer result (%d bytes vs %zu needed)\n",
+ urb->actual_length,
+ sizeof(*xfer_result));
+ break;
+ }
+ xfer_result = (struct wa_xfer_result *)(wa->dti_buf);
+ if (xfer_result->hdr.bLength != sizeof(*xfer_result)) {
+ dev_err(dev, "DTI Error: xfer result--bad header length %u\n",
+ xfer_result->hdr.bLength);
+ break;
+ }
+ if (xfer_result->hdr.bNotifyType != WA_XFER_RESULT) {
+ dev_err(dev, "DTI Error: xfer result--bad header type 0x%02x\n",
+ xfer_result->hdr.bNotifyType);
+ break;
+ }
+ usb_status = xfer_result->bTransferStatus & 0x3f;
+ if (usb_status == WA_XFER_STATUS_NOT_FOUND)
+ /* taken care of already */
+ break;
+ xfer_id = le32_to_cpu(xfer_result->dwTransferID);
+ xfer = wa_xfer_get_by_id(wa, xfer_id);
+ if (xfer == NULL) {
+ /* FIXME: transaction not found. */
+ dev_err(dev, "DTI Error: xfer result--unknown xfer 0x%08x (status 0x%02x)\n",
+ xfer_id, usb_status);
+ break;
+ }
+ wa_xfer_result_chew(wa, xfer, xfer_result);
+ wa_xfer_put(xfer);
+ } else if (wa->dti_state == WA_DTI_ISOC_PACKET_STATUS_PENDING) {
+ wa_process_iso_packet_status(wa, urb);
+ } else {
+ dev_err(dev, "DTI Error: unexpected EP state = %d\n",
+ wa->dti_state);
}
- wa_xfer_result_chew(wa, xfer, xfer_result);
- wa_xfer_put(xfer);
break;
case -ENOENT: /* (we killed the URB)...so, no broadcast */
case -ESHUTDOWN: /* going away! */
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / commitdiff