From patchwork Wed Jun 15 16:59:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Elder X-Patchwork-Id: 582318 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 16B6DC433EF for ; Wed, 15 Jun 2022 16:59:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349993AbiFOQ7k (ORCPT ); Wed, 15 Jun 2022 12:59:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34234 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350002AbiFOQ7i (ORCPT ); Wed, 15 Jun 2022 12:59:38 -0400 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 927C92E9DF for ; Wed, 15 Jun 2022 09:59:34 -0700 (PDT) Received: by mail-pj1-x102b.google.com with SMTP id v11-20020a17090a4ecb00b001e2c5b837ccso2687688pjl.3 for ; Wed, 15 Jun 2022 09:59:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=rpIVO5Kfmx2LoU227Q0lbW/FLezMOp+ICqcp8J2B6FI=; b=MZpYEqAM/KX+Nu/O0mwQPCl2GJDQG3BQQBIWo9GaDMMfvVfCJGL0yTeCPiq6izrFor CLalTVjKv5Om+Cux+Qz7lkVbo11fce/QEbQgl6yrV3kM9xpUTvIC97MEWVhPJNmkx4ek kYzMko73AHKQlsafOON8jgXe47eiuTBrgT2N+lLMWYzOg6QvB/nJeo/zuZNlti9vCp8O TasXSMtCNQppiXD8b+sRBIKGg5m8MhLLlDxeN113kjn8sb4bcyfWdYmIG4Yh5wzG+3mZ vqrsHrJNvdQSYy/7vLm+m89jH3MfBWZKrbtU0WA3P4YNxenrKmwd4KLX6X/unKSD4LQr VTeg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=rpIVO5Kfmx2LoU227Q0lbW/FLezMOp+ICqcp8J2B6FI=; b=6FCYd93X039YFdPrm5WtLm7HI2eVKgMxSxsna/tKdzgJyegvw9Q00z9u+sYGm4YdKB xgRA0BLAJkTADa1lneKWR/nskrLFi3l98eSqQm5AGVmhO9yJOUuq9gMJB1i/X3rsU8oa FhZoaEBqR8kGr+5KpxLvhNrTaA8Fs0WO8ysJAIIJ/1NaFKJWuDF55hTJ9eA2g7WDEAxl ru9c/M20TqljhREoMkPVokz4uWVW8pMRkjZqMuAV19HWhCZ7WENVA2M6dYm3d26lwYLR uigBOtU88eyT79LgpY4vFyg9yt7OFFgWjTAsKgDFpxl1hzruFLoy6M4tdVK4Z3nu7aUl xOvg== X-Gm-Message-State: AJIora/LaLtYK8fCvD9F+t2mmSZLVejZwVd/y/lSFJnt++rmbIJh8opz h+7t3qDZofjK8CQBzTuijW9gqw== X-Google-Smtp-Source: AGRyM1ufbWyrUR7cMW1ED5blXTBvzX2GdcvoY3l2cczUqBWYxE8jz8arVAs7v/PQtOd+NX0fEFbhxQ== X-Received: by 2002:a17:902:f541:b0:163:f64a:6127 with SMTP id h1-20020a170902f54100b00163f64a6127mr596561plf.134.1655312374000; Wed, 15 Jun 2022 09:59:34 -0700 (PDT) Received: from localhost.localdomain ([192.77.111.2]) by smtp.gmail.com with ESMTPSA id s194-20020a6377cb000000b003fd1111d73csm10618513pgc.4.2022.06.15.09.59.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Jun 2022 09:59:33 -0700 (PDT) From: Alex Elder To: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: mka@chromium.org, evgreen@chromium.org, bjorn.andersson@linaro.org, quic_cpratapa@quicinc.com, quic_avuyyuru@quicinc.com, quic_jponduru@quicinc.com, quic_subashab@quicinc.com, elder@kernel.org, netdev@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next 1/5] net: ipa: don't assume one channel per event ring Date: Wed, 15 Jun 2022 11:59:25 -0500 Message-Id: <20220615165929.5924-2-elder@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220615165929.5924-1-elder@linaro.org> References: <20220615165929.5924-1-elder@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org In gsi_evt_ring_rx_update(), use gsi_event_trans() repeatedly to find the transaction associated with an event, rather than assuming consecutive events are associated with the same channel. This removes the only caller of gsi_trans_pool_next(), so get rid of it. Signed-off-by: Alex Elder --- drivers/net/ipa/gsi.c | 14 ++++++-------- drivers/net/ipa/gsi_private.h | 3 --- drivers/net/ipa/gsi_trans.c | 16 ---------------- 3 files changed, 6 insertions(+), 27 deletions(-) diff --git a/drivers/net/ipa/gsi.c b/drivers/net/ipa/gsi.c index df8af1f00fc8b..0e9064c043adf 100644 --- a/drivers/net/ipa/gsi.c +++ b/drivers/net/ipa/gsi.c @@ -1366,15 +1366,11 @@ static void gsi_evt_ring_rx_update(struct gsi_evt_ring *evt_ring, u32 index) { struct gsi_channel *channel = evt_ring->channel; struct gsi_ring *ring = &evt_ring->ring; - struct gsi_trans_info *trans_info; struct gsi_event *event_done; struct gsi_event *event; - struct gsi_trans *trans; u32 event_avail; u32 old_index; - trans_info = &channel->trans_info; - /* We'll start with the oldest un-processed event. RX channels * replenish receive buffers in single-TRE transactions, so we * can just map that event to its transaction. Transactions @@ -1382,9 +1378,6 @@ static void gsi_evt_ring_rx_update(struct gsi_evt_ring *evt_ring, u32 index) */ old_index = ring->index; event = gsi_ring_virt(ring, old_index); - trans = gsi_event_trans(channel->gsi, event); - if (!trans) - return; /* Compute the number of events to process before we wrap, * and determine when we'll be done processing events. @@ -1392,6 +1385,12 @@ static void gsi_evt_ring_rx_update(struct gsi_evt_ring *evt_ring, u32 index) event_avail = ring->count - old_index % ring->count; event_done = gsi_ring_virt(ring, index); do { + struct gsi_trans *trans; + + trans = gsi_event_trans(channel->gsi, event); + if (!trans) + return; + trans->len = __le16_to_cpu(event->len); /* Move on to the next event and transaction */ @@ -1399,7 +1398,6 @@ static void gsi_evt_ring_rx_update(struct gsi_evt_ring *evt_ring, u32 index) event++; else event = gsi_ring_virt(ring, 0); - trans = gsi_trans_pool_next(&trans_info->pool, trans); } while (event != event_done); } diff --git a/drivers/net/ipa/gsi_private.h b/drivers/net/ipa/gsi_private.h index 74cbc287fc715..0b2516fa21b5d 100644 --- a/drivers/net/ipa/gsi_private.h +++ b/drivers/net/ipa/gsi_private.h @@ -16,9 +16,6 @@ struct gsi_channel; #define GSI_RING_ELEMENT_SIZE 16 /* bytes; must be a power of 2 */ -/* Return the entry that follows one provided in a transaction pool */ -void *gsi_trans_pool_next(struct gsi_trans_pool *pool, void *element); - /** * gsi_trans_move_complete() - Mark a GSI transaction completed * @trans: Transaction to commit diff --git a/drivers/net/ipa/gsi_trans.c b/drivers/net/ipa/gsi_trans.c index a110be72f70b6..54a2400cb560e 100644 --- a/drivers/net/ipa/gsi_trans.c +++ b/drivers/net/ipa/gsi_trans.c @@ -214,22 +214,6 @@ void *gsi_trans_pool_alloc_dma(struct gsi_trans_pool *pool, dma_addr_t *addr) return pool->base + offset; } -/* Return the pool element that immediately follows the one given. - * This only works done if elements are allocated one at a time. - */ -void *gsi_trans_pool_next(struct gsi_trans_pool *pool, void *element) -{ - void *end = pool->base + pool->count * pool->size; - - WARN_ON(element < pool->base); - WARN_ON(element >= end); - WARN_ON(pool->max_alloc != 1); - - element += pool->size; - - return element < end ? element : pool->base; -} - /* Map a given ring entry index to the transaction associated with it */ static void gsi_channel_trans_map(struct gsi_channel *channel, u32 index, struct gsi_trans *trans)