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Wed, 28 Aug 2019 13:16:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1566998194; bh=byN0+oRJ97XKqT9ACdxABqAh2yXx1PCB8rvsaIeSLoE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fZBJxs+MId26vBvWg/JGYNa2Skw9hXxWo9ja8Hz/QJihbMcsDfBI7zYLe5xTtPgOi fZIZDpMOUgwVYoRGbT3thQlb6/HE//Kf4Gvl4nP3GgmAH8yPAezQxP8UkRV19kdz4Z Ri53XhOQOfO7NX5rBFFuxynNT5Y78E2KeE1QkCoE= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org F2CAE88A19 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=wgong@codeaurora.org From: Wen Gong To: ath10k@lists.infradead.org Subject: [PATCH v3 2/8] ath10k: enable RX bundle receive for sdio Date: Wed, 28 Aug 2019 21:16:11 +0800 Message-Id: <1566998177-2658-3-git-send-email-wgong@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1566998177-2658-1-git-send-email-wgong@codeaurora.org> References: <1566998177-2658-1-git-send-email-wgong@codeaurora.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190829_105103_410256_1D1F125D X-CRM114-Status: GOOD ( 16.69 ) X-Spam-Score: -2.5 (--) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-2.5 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [198.145.29.96 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid X-BeenThere: ath10k@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-wireless@vger.kernel.org MIME-Version: 1.0 Sender: "ath10k" Errors-To: ath10k-bounces+patchwork-ath10k=patchwork.kernel.org@lists.infradead.org From: Alagu Sankar The existing implementation of initiating multiple sdio transfers for receive bundling is slowing down the receive speed. Combining the transfers using a bundle method would be ideal. The transmission utilization ratio for sdio bus for small packet is slow, because the space and time cost for sdio bus is same for large length packet and small length packet. So the speed of data for large length packet is higher than small length. Test result of different length of data: data packet(byte) cost time(us) calculated rate(Mbps) 256 28 73 512 33 124 1024 35 234 1792 45 318 14336 168 682 28672 333 688 57344 660 695 Tested with QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00007-QCARMSWP-1. Signed-off-by: Alagu Sankar Signed-off-by: Wen Gong --- v2: fix incorrect skb tail of rx bundle in ath10k_sdio_mbox_rx_process_packet v3: change some code style split fix incorrect skb tail of rx bundle to patch "adjust skb length in ath10k_sdio_mbox_rx_packet" drivers/net/wireless/ath/ath10k/sdio.c | 106 +++++++++++++++++++++------------ drivers/net/wireless/ath/ath10k/sdio.h | 7 ++- 2 files changed, 74 insertions(+), 39 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/sdio.c b/drivers/net/wireless/ath/ath10k/sdio.c index 1127e44..23c998d 100644 --- a/drivers/net/wireless/ath/ath10k/sdio.c +++ b/drivers/net/wireless/ath/ath10k/sdio.c @@ -24,6 +24,9 @@ #include "trace.h" #include "sdio.h" +#define ATH10K_SDIO_DMA_BUF_SIZE (32 * 1024) +#define ATH10K_SDIO_VSG_BUF_SIZE (32 * 1024) + /* inlined helper functions */ static inline int ath10k_sdio_calc_txrx_padded_len(struct ath10k_sdio *ar_sdio, @@ -484,11 +487,11 @@ static int ath10k_sdio_mbox_rx_process_packets(struct ath10k *ar, return ret; } -static int ath10k_sdio_mbox_alloc_pkt_bundle(struct ath10k *ar, - struct ath10k_sdio_rx_data *rx_pkts, - struct ath10k_htc_hdr *htc_hdr, - size_t full_len, size_t act_len, - size_t *bndl_cnt) +static int ath10k_sdio_mbox_alloc_bundle(struct ath10k *ar, + struct ath10k_sdio_rx_data *rx_pkts, + struct ath10k_htc_hdr *htc_hdr, + size_t full_len, size_t act_len, + size_t *bndl_cnt) { int ret, i; @@ -529,6 +532,7 @@ static int ath10k_sdio_mbox_rx_alloc(struct ath10k *ar, size_t full_len, act_len; bool last_in_bundle; int ret, i; + int pkt_cnt = 0; if (n_lookaheads > ATH10K_SDIO_MAX_RX_MSGS) { ath10k_warn(ar, @@ -572,20 +576,22 @@ static int ath10k_sdio_mbox_rx_alloc(struct ath10k *ar, */ size_t bndl_cnt; - ret = ath10k_sdio_mbox_alloc_pkt_bundle(ar, - &ar_sdio->rx_pkts[i], - htc_hdr, - full_len, - act_len, - &bndl_cnt); + struct ath10k_sdio_rx_data *rx_pkts = + &ar_sdio->rx_pkts[pkt_cnt]; + + ret = ath10k_sdio_mbox_alloc_bundle(ar, + rx_pkts, + htc_hdr, + full_len, + act_len, + &bndl_cnt); if (ret) { ath10k_warn(ar, "alloc_bundle error %d\n", ret); goto err; } - n_lookaheads += bndl_cnt; - i += bndl_cnt; + pkt_cnt += bndl_cnt; /*Next buffer will be the last in the bundle */ last_in_bundle = true; } @@ -597,7 +603,7 @@ static int ath10k_sdio_mbox_rx_alloc(struct ath10k *ar, if (htc_hdr->flags & ATH10K_HTC_FLAGS_RECV_1MORE_BLOCK) full_len += ATH10K_HIF_MBOX_BLOCK_SIZE; - ret = ath10k_sdio_mbox_alloc_rx_pkt(&ar_sdio->rx_pkts[i], + ret = ath10k_sdio_mbox_alloc_rx_pkt(&ar_sdio->rx_pkts[pkt_cnt], act_len, full_len, last_in_bundle, @@ -606,9 +612,10 @@ static int ath10k_sdio_mbox_rx_alloc(struct ath10k *ar, ath10k_warn(ar, "alloc_rx_pkt error %d\n", ret); goto err; } + pkt_cnt++; } - ar_sdio->n_rx_pkts = i; + ar_sdio->n_rx_pkts = pkt_cnt; return 0; @@ -622,10 +629,10 @@ static int ath10k_sdio_mbox_rx_alloc(struct ath10k *ar, return ret; } -static int ath10k_sdio_mbox_rx_packet(struct ath10k *ar, - struct ath10k_sdio_rx_data *pkt) +static int ath10k_sdio_mbox_rx_fetch(struct ath10k *ar) { struct ath10k_sdio *ar_sdio = ath10k_sdio_priv(ar); + struct ath10k_sdio_rx_data *pkt = &ar_sdio->rx_pkts[0]; struct sk_buff *skb = pkt->skb; struct ath10k_htc_hdr *htc_hdr; int ret; @@ -633,46 +640,62 @@ static int ath10k_sdio_mbox_rx_packet(struct ath10k *ar, ret = ath10k_sdio_readsb(ar, ar_sdio->mbox_info.htc_addr, skb->data, pkt->alloc_len); - if (!ret) { - /* Update actual length. The original length may be incorrect, - * as the FW will bundle multiple packets as long as their sizes - * fit within the same aligned length (pkt->alloc_len). - */ - htc_hdr = (struct ath10k_htc_hdr *)skb->data; - pkt->act_len = le16_to_cpu(htc_hdr->len) + sizeof(*htc_hdr); - if (pkt->act_len <= pkt->alloc_len) { - skb_put(skb, pkt->act_len); - } else { - ath10k_warn(ar, "rx packet too large (%zu > %zu)\n", - pkt->act_len, pkt->alloc_len); - ret = -EMSGSIZE; - } + if (ret) { + ar_sdio->n_rx_pkts = 0; + ath10k_sdio_mbox_free_rx_pkt(pkt); + return ret; } + htc_hdr = (struct ath10k_htc_hdr *)skb->data; + pkt->act_len = le16_to_cpu(htc_hdr->len) + sizeof(*htc_hdr); pkt->status = ret; + skb_put(skb, pkt->act_len); return ret; } -static int ath10k_sdio_mbox_rx_fetch(struct ath10k *ar) +static int ath10k_sdio_mbox_rx_fetch_bundle(struct ath10k *ar) { struct ath10k_sdio *ar_sdio = ath10k_sdio_priv(ar); + struct ath10k_sdio_rx_data *pkt; + struct ath10k_htc_hdr *htc_hdr; int ret, i; + u32 pkt_offset, virt_pkt_len; + virt_pkt_len = 0; for (i = 0; i < ar_sdio->n_rx_pkts; i++) { - ret = ath10k_sdio_mbox_rx_packet(ar, - &ar_sdio->rx_pkts[i]); + virt_pkt_len += ar_sdio->rx_pkts[i].alloc_len; + } + + if (virt_pkt_len < ATH10K_SDIO_DMA_BUF_SIZE) { + ret = ath10k_sdio_readsb(ar, ar_sdio->mbox_info.htc_addr, + ar_sdio->vsg_buffer, virt_pkt_len); if (ret) goto err; + } else { + ath10k_err(ar, "size exceeding limit %d\n", virt_pkt_len); + } + + pkt_offset = 0; + for (i = 0; i < ar_sdio->n_rx_pkts; i++) { + pkt = &ar_sdio->rx_pkts[i]; + htc_hdr = (struct ath10k_htc_hdr *)(ar_sdio->vsg_buffer + pkt_offset); + pkt->act_len = le16_to_cpu(htc_hdr->len) + sizeof(*htc_hdr); + + skb_put_data(pkt->skb, htc_hdr, pkt->act_len); + pkt->status = 0; + pkt_offset += pkt->alloc_len; } return 0; err: /* Free all packets that was not successfully fetched. */ - for (; i < ar_sdio->n_rx_pkts; i++) + for (i = 0; i < ar_sdio->n_rx_pkts; i++) ath10k_sdio_mbox_free_rx_pkt(&ar_sdio->rx_pkts[i]); + ar_sdio->n_rx_pkts = 0; + return ret; } @@ -715,7 +738,10 @@ static int ath10k_sdio_mbox_rxmsg_pending_handler(struct ath10k *ar, */ *done = false; - ret = ath10k_sdio_mbox_rx_fetch(ar); + if (ar_sdio->n_rx_pkts > 1) + ret = ath10k_sdio_mbox_rx_fetch_bundle(ar); + else + ret = ath10k_sdio_mbox_rx_fetch(ar); /* Process fetched packets. This will potentially update * n_lookaheads depending on if the packets contain lookahead @@ -1123,7 +1149,7 @@ static int ath10k_sdio_bmi_get_rx_lookahead(struct ath10k *ar) MBOX_HOST_INT_STATUS_ADDRESS, &rx_word); if (ret) { - ath10k_warn(ar, "unable to read RX_LOOKAHEAD_VALID: %d\n", ret); + ath10k_warn(ar, "unable to read rx_lookahd: %d\n", ret); return ret; } @@ -2018,6 +2044,12 @@ static int ath10k_sdio_probe(struct sdio_func *func, goto err_core_destroy; } + ar_sdio->vsg_buffer = devm_kmalloc(ar->dev, ATH10K_SDIO_VSG_BUF_SIZE, GFP_KERNEL); + if (!ar_sdio->vsg_buffer) { + ret = -ENOMEM; + goto err_core_destroy; + } + ar_sdio->irq_data.irq_en_reg = devm_kzalloc(ar->dev, sizeof(struct ath10k_sdio_irq_enable_regs), GFP_KERNEL); diff --git a/drivers/net/wireless/ath/ath10k/sdio.h b/drivers/net/wireless/ath/ath10k/sdio.h index b8c7ac0..4896eca 100644 --- a/drivers/net/wireless/ath/ath10k/sdio.h +++ b/drivers/net/wireless/ath/ath10k/sdio.h @@ -138,8 +138,8 @@ struct ath10k_sdio_irq_proc_regs { u8 rx_lookahead_valid; u8 host_int_status2; u8 gmbox_rx_avail; - __le32 rx_lookahead[2]; - __le32 rx_gmbox_lookahead_alias[2]; + __le32 rx_lookahead[2 * ATH10K_HIF_MBOX_NUM_MAX]; + __le32 int_status_enable; }; struct ath10k_sdio_irq_enable_regs { @@ -196,6 +196,9 @@ struct ath10k_sdio { struct ath10k *ar; struct ath10k_sdio_irq_data irq_data; + /* temporary buffer for sdio read */ + u8 *vsg_buffer; + /* temporary buffer for BMI requests */ u8 *bmi_buf;