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45d19984ec
This adds a new task and endpoints to handle large opaque (to the USB) chunks of data. The expected use case is that the USB endpoint accepts bytes from the host and passes them blindly to the blob-handling task. At some point, the blob-handling task may wish to send bytes back to the host. What those bytes are and what they mean is determined at higher levels of abstraction. BUG=chrome-os-partner:40969 BRANCH=none TEST=make buildall This CL doesn't enable the blob-handler; it just makes it available. The next CL will enable and test it. Change-Id: I6eba8e8010466e71efe9c5e06848b9f403df835f Signed-off-by: Bill Richardson <wfrichar@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/275131 Reviewed-by: Randall Spangler <rspangler@chromium.org>
27 lines
809 B
C
27 lines
809 B
C
/* Copyright 2015 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* Generic API for handling opaque blobs of data. */
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#ifndef __CROS_EC_BLOB_H
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#define __CROS_EC_BLOB_H
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#include <stddef.h>
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#include <stdint.h>
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/* Call this to send data to the blob-handler */
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size_t put_bytes_to_blob(uint8_t *buffer, size_t count);
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/* Call this to get data back fom the blob-handler */
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size_t get_bytes_from_blob(uint8_t *buffer, size_t count);
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/* Implement this to be notified when the blob-handler can take more data */
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void blob_is_ready_for_more_bytes(void);
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/* Implement this to be notified when the blob-handler has data to give us */
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void blob_is_ready_to_emit_bytes(void);
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#endif /* __CROS_EC_BLOB_H */
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