diff options
| author | Andrei Danaila <adanaila@codeaurora.org> | 2015-05-04 14:25:41 -0700 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 21:24:41 -0700 |
| commit | f688e16bf59fe323d83c4067125f9eaeebfb7906 (patch) | |
| tree | d7a2f70247a7b55b447c6bec4a0fa194b843cfb1 /include | |
| parent | 74c1e7710f2e488ecadec71315e4fda0a2589027 (diff) | |
mhi: core: Enable queueing of virtual buffers
Enable clients to queue virtual buffers, thus leaving
all the DMA operations to MHI.
Change-Id: I824d2f387b1a21d322ca0628963995824227bd76
Signed-off-by: Andrei Danaila <adanaila@codeaurora.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/msm_mhi.h | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/include/linux/msm_mhi.h b/include/linux/msm_mhi.h index 947c369b5b9a..d9ddf3ac9795 100644 --- a/include/linux/msm_mhi.h +++ b/include/linux/msm_mhi.h @@ -1,4 +1,4 @@ -/* Copyright (c) 2014-2015, The Linux Foundation. All rights reserved. +/* Copyright (c) 2014-2016, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -113,8 +113,8 @@ enum MHI_FLAGS { struct mhi_result { void *user_data; - dma_addr_t payload_buf; - u32 bytes_xferd; + void *buf_addr; + size_t bytes_xferd; enum MHI_STATUS transaction_status; enum MHI_FLAGS flags; }; @@ -180,12 +180,14 @@ enum MHI_STATUS mhi_open_channel(struct mhi_client_handle *client_handle); * @chain Specify whether to set the chain bit on this buffer * @eob Specify whether this buffer should trigger EOB interrupt * + * NOTE: * Not thread safe, caller must ensure concurrency protection. + * User buffer must be physically contiguous. * * @Return MHI_STATUS */ -enum MHI_STATUS mhi_queue_xfer(struct mhi_client_handle *client_handle, - dma_addr_t buf, size_t buf_len, enum MHI_FLAGS flags); +int mhi_queue_xfer(struct mhi_client_handle *client_handle, + void *buf, size_t buf_len, enum MHI_FLAGS mhi_flags); /** * mhi_close_channel - Client can request channel to be closed and handle freed |