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qcacmn: Interrupt changes in MSI path

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1) Modified MSI interrupt mask for QCN9000 so that rx and tx
interrupts can be decoupled.

2) Removed lmac interrupts from polling mode and switched
them to msi interrupts. Added MSI masks for lmac rings.

3) Enable monitor mode LWM interrupt. This was already enabled in
integrated ahb interrupts but missing in msi. Replenish buffers in
RXDMA refill ring based on low threshold interrupts in addition to
regular Rx processing. Also made interrupt batch counter threshold as 8
for monitor status ring since ppdu end interrupts are not available in
PCI chipset and require srng msi interrupts to reap monitor status ring

Change-Id: I5c84b14d6b0a9c26fb3f0d67c349e79751a60861
This commit is contained in:
Nandha Kishore Easwaran
2020-02-12 17:49:51 +05:30
committed by Gerrit - the friendly Code Review server
parent 4dab98d3ce
commit 0d69530ee2
2 changed files with 56 additions and 7 deletions
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21
dp/wifi3.0/dp_main.c
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@@ -1075,8 +1075,7 @@ static int dp_srng_calculate_msi_group(struct dp_soc *soc,
break;
case RXDMA_MONITOR_BUF:
/* TODO: support low_thresh interrupt */
return -QDF_STATUS_E_NOENT;
grp_mask = &soc->wlan_cfg_ctx->int_host2rxdma_mon_ring_mask[0];
break;
case TCL_DATA:
@@ -1333,6 +1332,15 @@ dp_srng_configure_interrupt_thresholds(struct dp_soc *soc,
ring_params->flags |= HAL_SRNG_LOW_THRES_INTR_ENABLE;
ring_params->intr_batch_cntr_thres_entries = 0;
}
/* In case of PCI chipsets, we dont have PPDU end interrupts,
* so MONITOR STATUS ring is reaped by receiving MSI from srng.
* Keep batch threshold as 8 so that interrupt is received for
* every 4 packets in MONITOR_STATUS ring
*/
if ((ring_type == RXDMA_MONITOR_STATUS) &&
(soc->intr_mode == DP_INTR_MSI))
ring_params->intr_batch_cntr_thres_entries = 4;
}
#endif
@@ -2038,6 +2046,10 @@ static void dp_soc_interrupt_map_calculate_msi(struct dp_soc *soc,
soc->wlan_cfg_ctx, intr_ctx_num);
int rxdma2host_ring_mask = wlan_cfg_get_rxdma2host_ring_mask(
soc->wlan_cfg_ctx, intr_ctx_num);
int host2rxdma_ring_mask = wlan_cfg_get_host2rxdma_ring_mask(
soc->wlan_cfg_ctx, intr_ctx_num);
int host2rxdma_mon_ring_mask = wlan_cfg_get_host2rxdma_mon_ring_mask(
soc->wlan_cfg_ctx, intr_ctx_num);
unsigned int vector =
(intr_ctx_num % msi_vector_count) + msi_vector_start;
@@ -2046,7 +2058,8 @@ static void dp_soc_interrupt_map_calculate_msi(struct dp_soc *soc,
soc->intr_mode = DP_INTR_MSI;
if (tx_mask | rx_mask | rx_mon_mask | rx_err_ring_mask |
rx_wbm_rel_ring_mask | reo_status_ring_mask | rxdma2host_ring_mask)
rx_wbm_rel_ring_mask | reo_status_ring_mask | rxdma2host_ring_mask |
host2rxdma_ring_mask | host2rxdma_mon_ring_mask)
irq_id_map[num_irq++] =
pld_get_msi_irq(soc->osdev->dev, vector);
@@ -11307,7 +11320,7 @@ void *dp_soc_init(struct dp_soc *soc, HTC_HANDLE htc_handle,
soc->hw_nac_monitor_support = 1;
soc->per_tid_basize_max_tid = 8;
soc->num_hw_dscp_tid_map = HAL_MAX_HW_DSCP_TID_V2_MAPS;
soc->lmac_polled_mode = 1;
soc->lmac_polled_mode = 0;
soc->wbm_release_desc_rx_sg_support = 1;
if (cfg_get(soc->ctrl_psoc, CFG_DP_FULL_MON_MODE))
soc->full_mon_mode = true;