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ath10k: enable alt data of TX path for sdio 

The default credit size is 1792 bytes, but the IP mtu is 1500 bytes,
then it has about 290 bytes's waste for each data packet on sdio
transfer path for TX bundle, it will reduce the transmission utilization
ratio for data packet.

This patch enable the small credit size in firmware, firmware will use
the new credit size 1556 bytes, it will increase the transmission
utilization ratio for data packet on TX patch. It results in significant
performance improvement on TX path.

This patch only effect sdio chip, it will not effect PCI, SNOC etc.

Tested with QCA6174 SDIO with firmware
WLAN.RMH.4.4.1-00017-QCARMSWP-1.

Signed-off-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200410061400.14231-3-wgong@codeaurora.org
This commit is contained in:
Wen Gong 2020-04-21 15:09:35 +03:00 committed by Kalle Valo
parent c8334512f3
commit 2f918ea986
3 changed files with 25 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/net/wireless/ath/ath10k/core.c
View File

@ -725,10 +725,10 @@ static int ath10k_init_sdio(struct ath10k *ar, enum ath10k_firmware_mode mode)
param |= HI_ACS_FLAGS_SDIO_REDUCE_TX_COMPL_SET;
/* Alternate credit size of 1544 as used by SDIO firmware is
* not big enough for mac80211 / native wifi frames. disable it
*/
param &= ~HI_ACS_FLAGS_ALT_DATA_CREDIT_SIZE;
if (mode == ATH10K_FIRMWARE_MODE_NORMAL)
param |= HI_ACS_FLAGS_ALT_DATA_CREDIT_SIZE;
else
param &= ~HI_ACS_FLAGS_ALT_DATA_CREDIT_SIZE;
if (mode == ATH10K_FIRMWARE_MODE_UTF)
param &= ~HI_ACS_FLAGS_SDIO_SWAP_MAILBOX_SET;

12
drivers/net/wireless/ath/ath10k/htc.c
View File

@ -957,12 +957,16 @@ int ath10k_htc_wait_target(struct ath10k_htc *htc)
*/
if (htc->control_resp_len >=
sizeof(msg->hdr) + sizeof(msg->ready_ext)) {
htc->alt_data_credit_size =
__le16_to_cpu(msg->ready_ext.reserved) &
ATH10K_HTC_MSG_READY_EXT_ALT_DATA_MASK;
htc->max_msgs_per_htc_bundle =
min_t(u8, msg->ready_ext.max_msgs_per_htc_bundle,
HTC_HOST_MAX_MSG_PER_RX_BUNDLE);
ath10k_dbg(ar, ATH10K_DBG_HTC,
"Extended ready message. RX bundle size: %d\n",
htc->max_msgs_per_htc_bundle);
"Extended ready message RX bundle size %d alt size %d\n",
htc->max_msgs_per_htc_bundle,
htc->alt_data_credit_size);
}
INIT_WORK(&ar->bundle_tx_work, ath10k_htc_bundle_tx_work);
@ -1114,6 +1118,10 @@ setup:
ep->tx_credits = tx_alloc;
ep->tx_credit_size = htc->target_credit_size;
if (conn_req->service_id == ATH10K_HTC_SVC_ID_HTT_DATA_MSG &&
htc->alt_data_credit_size != 0)
ep->tx_credit_size = htc->alt_data_credit_size;
/* copy all the callbacks */
ep->ep_ops = conn_req->ep_ops;

13
drivers/net/wireless/ath/ath10k/htc.h
View File

@ -119,6 +119,8 @@ enum ath10k_htc_conn_flags {
#define ATH10K_HTC_CONN_FLAGS_RECV_ALLOC_LSB 8
};
#define ATH10K_HTC_MSG_READY_EXT_ALT_DATA_MASK 0xFFF
enum ath10k_htc_conn_svc_status {
ATH10K_HTC_CONN_SVC_STATUS_SUCCESS = 0,
ATH10K_HTC_CONN_SVC_STATUS_NOT_FOUND = 1,
@ -155,8 +157,14 @@ struct ath10k_htc_ready_extended {
struct ath10k_htc_ready base;
u8 htc_version; /* @enum ath10k_htc_version */
u8 max_msgs_per_htc_bundle;
u8 pad0;
u8 pad1;
union {
__le16 reserved;
struct {
u8 pad0;
u8 pad1;
} __packed;
} __packed;
} __packed;
struct ath10k_htc_conn_svc {
@ -393,6 +401,7 @@ struct ath10k_htc {
int total_transmit_credits;
int target_credit_size;
u8 max_msgs_per_htc_bundle;
int alt_data_credit_size;
};
int ath10k_htc_init(struct ath10k *ar);