From patchwork Wed Feb 20 16:15:19 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanislaw Gruszka X-Patchwork-Id: 10822471 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CEE7413B5 for ; Wed, 20 Feb 2019 16:15:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BA61A2F1A1 for ; Wed, 20 Feb 2019 16:15:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AEB762F1B0; Wed, 20 Feb 2019 16:15:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0F1832F1A6 for ; Wed, 20 Feb 2019 16:15:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727473AbfBTQPc (ORCPT ); Wed, 20 Feb 2019 11:15:32 -0500 Received: from mx1.redhat.com ([209.132.183.28]:48946 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725836AbfBTQPc (ORCPT ); Wed, 20 Feb 2019 11:15:32 -0500 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 3B3711487FA; Wed, 20 Feb 2019 16:15:31 +0000 (UTC) Received: from localhost (ovpn-204-136.brq.redhat.com [10.40.204.136]) by smtp.corp.redhat.com (Postfix) with ESMTP id B200C69194; Wed, 20 Feb 2019 16:15:30 +0000 (UTC) From: Stanislaw Gruszka To: Felix Fietkau Cc: linux-wireless@vger.kernel.org, Lorenzo Bianconi Subject: [PATCH v3 2/3] mt76usb: use synchronous msg for mcu command responses Date: Wed, 20 Feb 2019 17:15:19 +0100 Message-Id: <1550679320-14343-2-git-send-email-sgruszka@redhat.com> In-Reply-To: <1550679320-14343-1-git-send-email-sgruszka@redhat.com> References: <1550679320-14343-1-git-send-email-sgruszka@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.38]); Wed, 20 Feb 2019 16:15:31 +0000 (UTC) Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Use usb_bulk_msg for reading MCU command responses. This simplify code a lot. Together with 97a3005759c ("mt76usb: allow mt76u_bulk_msg be used for reads") it also fix possible problems with rx data buffers not being aligned and contained within single page. After doing page_frag_alloc(1024) consecutive page_frag_alloc(PAGE_SIZE) will alloc PAGE_SIZE buffer at PAGE_SIZE - 1024 offset. Signed-off-by: Stanislaw Gruszka --- drivers/net/wireless/mediatek/mt76/mt76.h | 3 +- drivers/net/wireless/mediatek/mt76/mt76x0/usb.c | 11 -------- .../net/wireless/mediatek/mt76/mt76x02_usb_mcu.c | 32 +++++++--------------- drivers/net/wireless/mediatek/mt76/mt76x2/usb.c | 11 -------- drivers/net/wireless/mediatek/mt76/usb.c | 1 - drivers/net/wireless/mediatek/mt76/usb_mcu.c | 31 +++------------------ 6 files changed, 15 insertions(+), 74 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h index 6092646014c4..c9b5eb9b0582 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76.h +++ b/drivers/net/wireless/mediatek/mt76/mt76.h @@ -384,8 +384,7 @@ struct mt76_usb { struct mt76u_mcu { struct mutex mutex; - struct completion cmpl; - struct mt76u_buf res; + u8 *data; u32 msg_seq; /* multiple reads */ diff --git a/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c b/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c index da9d05f6074d..f0c33890f1a5 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c @@ -311,13 +311,11 @@ static int __maybe_unused mt76x0_suspend(struct usb_interface *usb_intf, pm_message_t state) { struct mt76x02_dev *dev = usb_get_intfdata(usb_intf); - struct mt76_usb *usb = &dev->mt76.usb; mt76u_stop_queues(&dev->mt76); mt76x0u_mac_stop(dev); clear_bit(MT76_STATE_MCU_RUNNING, &dev->mt76.state); mt76x0_chip_onoff(dev, false, false); - usb_kill_urb(usb->mcu.res.urb); return 0; } @@ -328,15 +326,6 @@ static int __maybe_unused mt76x0_resume(struct usb_interface *usb_intf) struct mt76_usb *usb = &dev->mt76.usb; int ret; - reinit_completion(&usb->mcu.cmpl); - ret = mt76u_submit_buf(&dev->mt76, USB_DIR_IN, - MT_EP_IN_CMD_RESP, - &usb->mcu.res, GFP_KERNEL, - mt76u_mcu_complete_urb, - &usb->mcu.cmpl); - if (ret < 0) - goto err; - ret = mt76u_submit_rx_buffers(&dev->mt76); if (ret < 0) goto err; diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_usb_mcu.c b/drivers/net/wireless/mediatek/mt76/mt76x02_usb_mcu.c index f497c8e4332a..0cb8751321a1 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x02_usb_mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x02_usb_mcu.c @@ -61,33 +61,21 @@ mt76x02u_multiple_mcu_reads(struct mt76_dev *dev, u8 *data, int len) static int mt76x02u_mcu_wait_resp(struct mt76_dev *dev, u8 seq) { struct mt76_usb *usb = &dev->usb; - struct mt76u_buf *buf = &usb->mcu.res; - struct urb *urb = buf->urb; - u8 *data = buf->buf; - int i, ret; + u8 *data = usb->mcu.data; + int i, len, ret; u32 rxfce; for (i = 0; i < 5; i++) { - if (!wait_for_completion_timeout(&usb->mcu.cmpl, - msecs_to_jiffies(300))) + ret = mt76u_bulk_msg(dev, data, MCU_RESP_URB_SIZE, &len, 300); + if (ret == -ETIMEDOUT) continue; - - if (urb->status) - return -EIO; + if (ret) + goto out; if (usb->mcu.rp) - mt76x02u_multiple_mcu_reads(dev, data + 4, - urb->actual_length - 8); + mt76x02u_multiple_mcu_reads(dev, data + 4, len - 8); rxfce = get_unaligned_le32(data); - ret = mt76u_submit_buf(dev, USB_DIR_IN, - MT_EP_IN_CMD_RESP, - buf, GFP_KERNEL, - mt76u_mcu_complete_urb, - &usb->mcu.cmpl); - if (ret) - return ret; - if (seq == FIELD_GET(MT_RX_FCE_INFO_CMD_SEQ, rxfce) && FIELD_GET(MT_RX_FCE_INFO_EVT_TYPE, rxfce) == EVT_CMD_DONE) return 0; @@ -96,9 +84,9 @@ static int mt76x02u_mcu_wait_resp(struct mt76_dev *dev, u8 seq) FIELD_GET(MT_RX_FCE_INFO_EVT_TYPE, rxfce), seq, FIELD_GET(MT_RX_FCE_INFO_CMD_SEQ, rxfce)); } - - dev_err(dev->dev, "error: %s timed out\n", __func__); - return -ETIMEDOUT; +out: + dev_err(dev->dev, "error: %s failed with %d\n", __func__, ret); + return ret; } static int diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2/usb.c b/drivers/net/wireless/mediatek/mt76/mt76x2/usb.c index f81a85e96922..ddb6b2c48e01 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x2/usb.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x2/usb.c @@ -100,11 +100,9 @@ static int __maybe_unused mt76x2u_suspend(struct usb_interface *intf, pm_message_t state) { struct mt76x02_dev *dev = usb_get_intfdata(intf); - struct mt76_usb *usb = &dev->mt76.usb; mt76u_stop_queues(&dev->mt76); mt76x2u_stop_hw(dev); - usb_kill_urb(usb->mcu.res.urb); return 0; } @@ -115,15 +113,6 @@ static int __maybe_unused mt76x2u_resume(struct usb_interface *intf) struct mt76_usb *usb = &dev->mt76.usb; int err; - reinit_completion(&usb->mcu.cmpl); - err = mt76u_submit_buf(&dev->mt76, USB_DIR_IN, - MT_EP_IN_CMD_RESP, - &usb->mcu.res, GFP_KERNEL, - mt76u_mcu_complete_urb, - &usb->mcu.cmpl); - if (err < 0) - goto err; - err = mt76u_submit_rx_buffers(&dev->mt76); if (err < 0) goto err; diff --git a/drivers/net/wireless/mediatek/mt76/usb.c b/drivers/net/wireless/mediatek/mt76/usb.c index 78191968b4fa..5c3b7f735aae 100644 --- a/drivers/net/wireless/mediatek/mt76/usb.c +++ b/drivers/net/wireless/mediatek/mt76/usb.c @@ -933,7 +933,6 @@ int mt76u_init(struct mt76_dev *dev, INIT_DELAYED_WORK(&usb->stat_work, mt76u_tx_status_data); skb_queue_head_init(&dev->rx_skb[MT_RXQ_MAIN]); - init_completion(&usb->mcu.cmpl); mutex_init(&usb->mcu.mutex); mutex_init(&usb->usb_ctrl_mtx); diff --git a/drivers/net/wireless/mediatek/mt76/usb_mcu.c b/drivers/net/wireless/mediatek/mt76/usb_mcu.c index 72c8607da4b4..747231edc57d 100644 --- a/drivers/net/wireless/mediatek/mt76/usb_mcu.c +++ b/drivers/net/wireless/mediatek/mt76/usb_mcu.c @@ -16,42 +16,19 @@ #include "mt76.h" -void mt76u_mcu_complete_urb(struct urb *urb) -{ - struct completion *cmpl = urb->context; - - complete(cmpl); -} -EXPORT_SYMBOL_GPL(mt76u_mcu_complete_urb); - int mt76u_mcu_init_rx(struct mt76_dev *dev) { struct mt76_usb *usb = &dev->usb; - int err; - err = mt76u_buf_alloc(dev, &usb->mcu.res, MCU_RESP_URB_SIZE, - MCU_RESP_URB_SIZE, GFP_KERNEL); - if (err < 0) - return err; - - err = mt76u_submit_buf(dev, USB_DIR_IN, MT_EP_IN_CMD_RESP, - &usb->mcu.res, GFP_KERNEL, - mt76u_mcu_complete_urb, - &usb->mcu.cmpl); - if (err < 0) - mt76u_buf_free(&usb->mcu.res); - - return err; + usb->mcu.data = kmalloc(MCU_RESP_URB_SIZE, GFP_KERNEL); + return usb->mcu.data ? 0 : -ENOMEM; } EXPORT_SYMBOL_GPL(mt76u_mcu_init_rx); void mt76u_mcu_deinit(struct mt76_dev *dev) { - struct mt76u_buf *buf = &dev->usb.mcu.res; + struct mt76_usb *usb = &dev->usb; - if (buf->urb) { - usb_kill_urb(buf->urb); - mt76u_buf_free(buf); - } + kfree(usb->mcu.data); } EXPORT_SYMBOL_GPL(mt76u_mcu_deinit);