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qcacmn: add support to clear the consumed HW descriptors

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Add support to clear/reset the consumed HW descriptors
to zero.

Change-Id: Idccb120afa448c4f958a3177f27cab9b1197ac3e
CRs-Fixed: 2978850
This commit is contained in:
Vevek Venkatesan
2021-06-27 23:48:11 +05:30
committed by Madan Koyyalamudi
parent 6332137696
commit f49df07dae
4 changed files with 90 additions and 0 deletions
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42
hal/wifi3.0/hal_api.h
View File

@@ -1911,6 +1911,48 @@ void hal_get_sw_hptp(void *hal_soc, hal_ring_handle_t hal_ring_hdl,
}
}
#if defined(CLEAR_SW2TCL_CONSUMED_DESC)
/**
* hal_srng_src_get_next_consumed - Get the next desc if consumed by HW
*
* @hal_soc: Opaque HAL SOC handle
* @hal_ring_hdl: Source ring pointer
*
* Return: pointer to descriptor if consumed by HW, else NULL
*/
static inline
void *hal_srng_src_get_next_consumed(void *hal_soc,
hal_ring_handle_t hal_ring_hdl)
{
struct hal_srng *srng = (struct hal_srng *)hal_ring_hdl;
uint32_t *desc = NULL;
/* TODO: Using % is expensive, but we have to do this since
* size of some SRNG rings is not power of 2 (due to descriptor
* sizes). Need to create separate API for rings used
* per-packet, with sizes power of 2 (TCL2SW, REO2SW,
* SW2RXDMA and CE rings)
*/
uint32_t next_entry = (srng->last_desc_cleared + srng->entry_size) %
srng->ring_size;
if (next_entry != (srng->u.src_ring.cached_tp + srng->entry_size) %
srng->ring_size) {
desc = &srng->ring_base_vaddr[next_entry];
srng->last_desc_cleared = next_entry;
}
return desc;
}
#else
static inline
void *hal_srng_src_get_next_consumed(void *hal_soc,
hal_ring_handle_t hal_ring_hdl)
{
return NULL;
}
#endif /* CLEAR_SW2TCL_CONSUMED_DESC */
/**
* hal_srng_src_get_next - Get next entry from a source ring and move cached tail pointer
*

4
hal/wifi3.0/hal_internal.h
View File

@@ -601,6 +601,10 @@ struct hal_srng {
unsigned long srng_event;
/* last flushed time stamp */
uint64_t last_flush_ts;
#if defined(CLEAR_SW2TCL_CONSUMED_DESC)
/* last ring desc entry cleared */
uint32_t last_desc_cleared;
#endif
#if defined(FEATURE_HAL_DELAYED_REG_WRITE) || \
defined(FEATURE_HAL_DELAYED_REG_WRITE_V2)
/* Previous hp/tp (based on ring dir) value written to the reg */

12
hal/wifi3.0/li/hal_li_tx.h
View File

@@ -229,6 +229,18 @@ void hal_tx_desc_set_dscp_tid_table_id(hal_soc_handle_t hal_soc_hdl,
hal_soc->ops->hal_tx_desc_set_dscp_tid_table_id(desc, id);
}
/**
* hal_tx_desc_clear - Clear the HW descriptor entry
* @hw_desc: Hardware descriptor to be cleared
*
* Return: void
*/
static inline void hal_tx_desc_clear(void *hw_desc)
{
qdf_mem_set(hw_desc + sizeof(struct tlv_32_hdr),
HAL_TX_DESC_LEN_BYTES, 0);
}
/**
* hal_tx_desc_sync - Commit the descriptor to Hardware
* @hal_tx_des_cached: Cached descriptor that software maintains