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qcacmn: Add support for ce_cancel_srng API

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ce cacnel is used To release/flush buffers from source SRNGs which have
not been reaped yet. Update this API to use appropriate hal API to reap
all pending buffers.

Change-Id: I6f8179b765f0768f2c2b25cd384b0380b7782414
CRs-Fixed: 2165595
This commit is contained in:
Kiran Venkatappa 2017-07-09 22:44:17 +05:30 • committed by snandini
commit c686275355
1 changed files with 53 additions and 2 deletions
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55
hif/src/ce/ce_service_srng.c
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2016-2017 The Linux Foundation. All rights reserved.
* Copyright (c) 2016-2018 The Linux Foundation. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
@ -516,7 +516,58 @@ ce_cancel_send_next_srng(struct CE_handle *copyeng,
unsigned int *transfer_idp,
uint32_t *toeplitz_hash_result)
{
return QDF_STATUS_E_INVAL;
struct CE_state *CE_state;
int status = QDF_STATUS_E_FAILURE;
struct CE_ring_state *src_ring;
unsigned int nentries_mask;
unsigned int sw_index;
struct hif_softc *scn;
struct ce_srng_src_desc *src_desc;
CE_state = (struct CE_state *)copyeng;
src_ring = CE_state->src_ring;
if (!src_ring)
return QDF_STATUS_E_FAILURE;
nentries_mask = src_ring->nentries_mask;
sw_index = src_ring->sw_index;
scn = CE_state->scn;
if (hal_srng_access_start(scn->hal_soc, src_ring->srng_ctx)) {
status = QDF_STATUS_E_FAILURE;
return status;
}
src_desc = hal_srng_src_pending_reap_next(scn->hal_soc,
src_ring->srng_ctx);
if (src_desc) {
/* Return data from completed source descriptor */
*bufferp = (qdf_dma_addr_t)
(((uint64_t)(src_desc)->buffer_addr_lo +
((uint64_t)((src_desc)->buffer_addr_hi &
0xFF) << 32)));
*nbytesp = src_desc->nbytes;
*transfer_idp = src_desc->meta_data;
*toeplitz_hash_result = 0; /*src_desc->toeplitz_hash_result;*/
if (per_CE_contextp)
*per_CE_contextp = CE_state->send_context;
/* sw_index is used more like read index */
if (per_transfer_contextp)
*per_transfer_contextp =
src_ring->per_transfer_context[sw_index];
src_ring->per_transfer_context[sw_index] = 0; /* sanity */
/* Update sw_index */
sw_index = CE_RING_IDX_INCR(nentries_mask, sw_index);
src_ring->sw_index = sw_index;
status = QDF_STATUS_SUCCESS;
}
hal_srng_access_end_reap(scn->hal_soc, src_ring->srng_ctx);
return status;
}
/* Shift bits to convert IS_*_RING_*_WATERMARK_MASK to CE_WM_FLAG_*_* */