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wifi: ath11k: HAL SRNG: don't deinitialize and re-initialize again

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Don't deinitialize and reinitialize the HAL helpers. The dma memory is
deallocated and there is high possibility that we'll not be able to get
the same memory allocated from dma when there is high memory pressure.

Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03926.13-QCAHSPSWPL_V2_SILICONZ_CE-2.52297.6

Fixes: d5c65159f2 ("ath11k: driver for Qualcomm IEEE 802.11ax devices")
Cc: stable@vger.kernel.org
Cc: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Link: https://patch.msgid.link/20250722053121.1145001-1-usama.anjum@collabora.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
This commit is contained in:
Muhammad Usama Anjum
2025-07-22 10:31:21 +05:00
committed by Jeff Johnson
parent 9eb6f55302
commit 32be3ca4cf
3 changed files with 18 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/wireless/ath/ath11k/core.c
View File

@@ -2215,14 +2215,10 @@ static int ath11k_core_reconfigure_on_crash(struct ath11k_base *ab)
mutex_unlock(&ab->core_lock);
ath11k_dp_free(ab);
ath11k_hal_srng_deinit(ab);
ath11k_hal_srng_clear(ab);
ab->free_vdev_map = (1LL << (ab->num_radios * TARGET_NUM_VDEVS(ab))) - 1;
ret = ath11k_hal_srng_init(ab);
if (ret)
return ret;
clear_bit(ATH11K_FLAG_CRASH_FLUSH, &ab->dev_flags);
ret = ath11k_core_qmi_firmware_ready(ab);

16
drivers/net/wireless/ath/ath11k/hal.c
View File

@@ -1386,6 +1386,22 @@ void ath11k_hal_srng_deinit(struct ath11k_base *ab)
}
EXPORT_SYMBOL(ath11k_hal_srng_deinit);
void ath11k_hal_srng_clear(struct ath11k_base *ab)
{
/* No need to memset rdp and wrp memory since each individual
* segment would get cleared in ath11k_hal_srng_src_hw_init()
* and ath11k_hal_srng_dst_hw_init().
*/
memset(ab->hal.srng_list, 0,
sizeof(ab->hal.srng_list));
memset(ab->hal.shadow_reg_addr, 0,
sizeof(ab->hal.shadow_reg_addr));
ab->hal.avail_blk_resource = 0;
ab->hal.current_blk_index = 0;
ab->hal.num_shadow_reg_configured = 0;
}
EXPORT_SYMBOL(ath11k_hal_srng_clear);
void ath11k_hal_dump_srng_stats(struct ath11k_base *ab)
{
struct hal_srng *srng;

1
drivers/net/wireless/ath/ath11k/hal.h
View File

@@ -965,6 +965,7 @@ int ath11k_hal_srng_setup(struct ath11k_base *ab, enum hal_ring_type type,
struct hal_srng_params *params);
int ath11k_hal_srng_init(struct ath11k_base *ath11k);
void ath11k_hal_srng_deinit(struct ath11k_base *ath11k);
void ath11k_hal_srng_clear(struct ath11k_base *ab);
void ath11k_hal_dump_srng_stats(struct ath11k_base *ab);
void ath11k_hal_srng_get_shadow_config(struct ath11k_base *ab,
u32 **cfg, u32 *len);