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qcacmn: Replenish Rx buffers on low threshold intr

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Replenish buffers in RXDMA refill ring based on low threshold
interrupts in addition to regular Rx processing. Also increased
RXDMA refill ring size to 4096.

Change-Id: If1f4592c815fe2404c4952a96b721cb6d4fdfcd0
This commit is contained in:
Karunakar Dasineni
2017-10-29 21:54:21 -07:00
committed by snandini
parent 1f88428baf
commit 87f0c5d850
8 changed files with 164 additions and 25 deletions
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42
dp/wifi3.0/dp_rx.c
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@@ -107,6 +107,29 @@ QDF_STATUS dp_rx_buffers_replenish(struct dp_soc *dp_soc, uint32_t mac_id,
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG,
"requested %d buffers for replenish", num_req_buffers);
hal_srng_access_start(dp_soc->hal_soc, rxdma_srng);
num_entries_avail = hal_srng_src_num_avail(dp_soc->hal_soc,
rxdma_srng,
sync_hw_ptr);
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG,
"no of availble entries in rxdma ring: %d",
num_entries_avail);
if (!(*desc_list) && (num_entries_avail >
((dp_rxdma_srng->num_entries * 3) / 4))) {
num_req_buffers = num_entries_avail;
} else if (num_entries_avail < num_req_buffers) {
num_desc_to_free = num_req_buffers - num_entries_avail;
num_req_buffers = num_entries_avail;
}
if (qdf_unlikely(!num_req_buffers)) {
num_desc_to_free = num_req_buffers;
hal_srng_access_end(dp_soc->hal_soc, rxdma_srng);
goto free_descs;
}
/*
* if desc_list is NULL, allocate the descs from freelist
*/
@@ -122,6 +145,7 @@ QDF_STATUS dp_rx_buffers_replenish(struct dp_soc *dp_soc, uint32_t mac_id,
"no free rx_descs in freelist");
DP_STATS_INC(dp_pdev, err.desc_alloc_fail,
num_req_buffers);
hal_srng_access_end(dp_soc->hal_soc, rxdma_srng);
return QDF_STATUS_E_NOMEM;
}
@@ -130,19 +154,6 @@ QDF_STATUS dp_rx_buffers_replenish(struct dp_soc *dp_soc, uint32_t mac_id,
num_req_buffers = num_alloc_desc;
}
hal_srng_access_start(dp_soc->hal_soc, rxdma_srng);
num_entries_avail = hal_srng_src_num_avail(dp_soc->hal_soc,
rxdma_srng,
sync_hw_ptr);
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG,
"no of availble entries in rxdma ring: %d",
num_entries_avail);
if (num_entries_avail < num_req_buffers) {
num_desc_to_free = num_req_buffers - num_entries_avail;
num_req_buffers = num_entries_avail;
}
count = 0;
@@ -208,10 +219,11 @@ QDF_STATUS dp_rx_buffers_replenish(struct dp_soc *dp_soc, uint32_t mac_id,
QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_DEBUG,
"%d rx desc added back to free list", num_desc_to_free);
DP_STATS_INC(dp_pdev, buf_freelist, num_desc_to_free);
DP_STATS_INC_PKT(dp_pdev, replenish.pkts, num_req_buffers,
(RX_BUFFER_SIZE * num_req_buffers));
free_descs:
DP_STATS_INC(dp_pdev, buf_freelist, num_desc_to_free);
/*
* add any available free desc back to the free list
*/
@@ -1449,7 +1461,7 @@ dp_rx_pdev_attach(struct dp_pdev *pdev)
/* For Rx buffers, WBM release ring is SW RING 3,for all pdev's */
dp_rxdma_srng = &pdev->rx_refill_buf_ring;
dp_rx_buffers_replenish(soc, pdev_id, dp_rxdma_srng, rx_desc_pool,
rxdma_entries, &desc_list, &tail, HAL_RX_BUF_RBM_SW3_BM);
0, &desc_list, &tail, HAL_RX_BUF_RBM_SW3_BM);
return QDF_STATUS_SUCCESS;
}