| Message ID | 1566903707-27536-7-git-send-email-wgong@codeaurora.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ath10k: improve throughout of tcp/udp TX/RX of sdio | expand |
On Tue, Aug 27, 2019 at 7:02 PM Wen Gong <wgong@codeaurora.org> wrote: > > 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> > --- > drivers/net/wireless/ath/ath10k/core.c | 16 ++++++++++++++++ > drivers/net/wireless/ath/ath10k/htc.c | 11 +++++++++-- > drivers/net/wireless/ath/ath10k/htc.h | 11 +++++++++-- > 3 files changed, 34 insertions(+), 4 deletions(-) > > diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c > index 351f4ed..7593d19 100644 > --- a/drivers/net/wireless/ath/ath10k/core.c > +++ b/drivers/net/wireless/ath/ath10k/core.c > @@ -31,6 +31,7 @@ > static unsigned int ath10k_cryptmode_param; > static bool uart_print; > static bool disable_tx_comp = true; > +static bool alt_data = true; > static bool skip_otp; > static bool rawmode; > static bool fw_diag_log; > @@ -45,6 +46,15 @@ > > /* If upper layer need the TX complete status, it can enable tx complete */ > module_param(disable_tx_comp, bool, 0644); > + > +/* alt_data is only used for sdio chip, for previous version of firmware, its > + * alt data size is 1544 which is not enough for native wifi, so it need to > + * alt_data for the firmware. > + * If the firmware has changed alt data size to 1556, then it can enable > + * alt_data for the firmware. > + * alt_data will not effect PCI, SNOC etc. > + */ > +module_param(alt_data, bool, 0644); > module_param(skip_otp, bool, 0644); > module_param(rawmode, bool, 0644); > module_param(fw_diag_log, bool, 0644); > @@ -701,6 +711,12 @@ static void ath10k_init_sdio(struct ath10k *ar, enum ath10k_firmware_mode mode) > */ > param &= ~HI_ACS_FLAGS_ALT_DATA_CREDIT_SIZE; > > + /* If alternate credit size of 1556 as used by SDIO firmware is > + * big enough for mac80211 / native wifi frames. enable it > + */ > + if (alt_data && mode == ATH10K_FIRMWARE_MODE_NORMAL) > + param |= HI_ACS_FLAGS_ALT_DATA_CREDIT_SIZE; else param &= ~HI_ACS_FLAGS_ALT_DATA_CREDIT_SIZE; (and remove the mask above) > + > if (mode == ATH10K_FIRMWARE_MODE_UTF) > param &= ~HI_ACS_FLAGS_SDIO_SWAP_MAILBOX_SET; > else > diff --git a/drivers/net/wireless/ath/ath10k/htc.c b/drivers/net/wireless/ath/ath10k/htc.c > index e0eb5f0..5cacab6 100644 > --- a/drivers/net/wireless/ath/ath10k/htc.c > +++ b/drivers/net/wireless/ath/ath10k/htc.c > @@ -938,12 +938,15 @@ 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) & 0x0fff; Please define 0x0fff as a macro. > 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); > @@ -1095,6 +1098,10 @@ int ath10k_htc_connect_service(struct ath10k_htc *htc, > 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; > > diff --git a/drivers/net/wireless/ath/ath10k/htc.h b/drivers/net/wireless/ath/ath10k/htc.h > index d805ea5..f0a9e60af 100644 > --- a/drivers/net/wireless/ath/ath10k/htc.h > +++ b/drivers/net/wireless/ath/ath10k/htc.h > @@ -139,8 +139,14 @@ 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 { > @@ -377,6 +383,7 @@ 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); > -- > 1.9.1 >
> -----Original Message----- > From: ath10k <ath10k-bounces@lists.infradead.org> On Behalf Of Nicolas > Boichat > Sent: Wednesday, August 28, 2019 1:38 PM > To: Wen Gong <wgong@codeaurora.org> > Cc: open list:NETWORKING DRIVERS (WIRELESS) <linux- > wireless@vger.kernel.org>; ath10k@lists.infradead.org > Subject: [EXT] Re: [PATCH v2 6/7] ath10k: enable alt data of TX path for sdio > Changed and V3 sent, https://patchwork.kernel.org/patch/11122141/ > > _______________________________________________ > ath10k mailing list > ath10k@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/ath10k
diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c index 351f4ed..7593d19 100644 --- a/drivers/net/wireless/ath/ath10k/core.c +++ b/drivers/net/wireless/ath/ath10k/core.c @@ -31,6 +31,7 @@ static unsigned int ath10k_cryptmode_param; static bool uart_print; static bool disable_tx_comp = true; +static bool alt_data = true; static bool skip_otp; static bool rawmode; static bool fw_diag_log; @@ -45,6 +46,15 @@ /* If upper layer need the TX complete status, it can enable tx complete */ module_param(disable_tx_comp, bool, 0644); + +/* alt_data is only used for sdio chip, for previous version of firmware, its + * alt data size is 1544 which is not enough for native wifi, so it need to + * alt_data for the firmware. + * If the firmware has changed alt data size to 1556, then it can enable + * alt_data for the firmware. + * alt_data will not effect PCI, SNOC etc. + */ +module_param(alt_data, bool, 0644); module_param(skip_otp, bool, 0644); module_param(rawmode, bool, 0644); module_param(fw_diag_log, bool, 0644); @@ -701,6 +711,12 @@ static void ath10k_init_sdio(struct ath10k *ar, enum ath10k_firmware_mode mode) */ param &= ~HI_ACS_FLAGS_ALT_DATA_CREDIT_SIZE; + /* If alternate credit size of 1556 as used by SDIO firmware is + * big enough for mac80211 / native wifi frames. enable it + */ + if (alt_data && mode == ATH10K_FIRMWARE_MODE_NORMAL) + param |= HI_ACS_FLAGS_ALT_DATA_CREDIT_SIZE; + if (mode == ATH10K_FIRMWARE_MODE_UTF) param &= ~HI_ACS_FLAGS_SDIO_SWAP_MAILBOX_SET; else diff --git a/drivers/net/wireless/ath/ath10k/htc.c b/drivers/net/wireless/ath/ath10k/htc.c index e0eb5f0..5cacab6 100644 --- a/drivers/net/wireless/ath/ath10k/htc.c +++ b/drivers/net/wireless/ath/ath10k/htc.c @@ -938,12 +938,15 @@ 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) & 0x0fff; 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); @@ -1095,6 +1098,10 @@ int ath10k_htc_connect_service(struct ath10k_htc *htc, 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; diff --git a/drivers/net/wireless/ath/ath10k/htc.h b/drivers/net/wireless/ath/ath10k/htc.h index d805ea5..f0a9e60af 100644 --- a/drivers/net/wireless/ath/ath10k/htc.h +++ b/drivers/net/wireless/ath/ath10k/htc.h @@ -139,8 +139,14 @@ 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 { @@ -377,6 +383,7 @@ 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);
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> --- drivers/net/wireless/ath/ath10k/core.c | 16 ++++++++++++++++ drivers/net/wireless/ath/ath10k/htc.c | 11 +++++++++-- drivers/net/wireless/ath/ath10k/htc.h | 11 +++++++++-- 3 files changed, 34 insertions(+), 4 deletions(-)