From patchwork Tue Aug 1 10:37:49 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anup Patel X-Patchwork-Id: 9874181 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 1100960365 for ; Tue, 1 Aug 2017 10:42:43 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1DA282868B for ; Tue, 1 Aug 2017 10:42:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 128EE28695; Tue, 1 Aug 2017 10:42:43 +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=-6.3 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI, RCVD_IN_SORBS_SPAM, T_DKIM_INVALID autolearn=unavailable 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 6299A286A9 for ; Tue, 1 Aug 2017 10:42:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752052AbdHAKi6 (ORCPT ); Tue, 1 Aug 2017 06:38:58 -0400 Received: from mail-qt0-f174.google.com ([209.85.216.174]:34447 "EHLO mail-qt0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751963AbdHAKi4 (ORCPT ); Tue, 1 Aug 2017 06:38:56 -0400 Received: by mail-qt0-f174.google.com with SMTP id s6so6498136qtc.1 for ; Tue, 01 Aug 2017 03:38:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=9QJ6Id1Wft+9gu70R50D19uVX8GCUZknAQyAmKSPRGs=; b=Cj9BoQncOpFjCqkU+CFIzmQT79+8A+UCxmd4EY/0hKM42ytmYRw6BRT5bHuC4j8OeY 2JXnVlKSDCc9NejJs4CQqMZyISiXo9PCkvqLhnumy43Jgvo1yhFKJcFmybRifqwku1iW wJUAU29F64Dbmh/GWQoYXO1sVehquiPJRQq6k= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=9QJ6Id1Wft+9gu70R50D19uVX8GCUZknAQyAmKSPRGs=; b=mliCO5VmFegwn8S8EoHceHDNLS1RUFoJM/0u7PRCxKx0CbljAFKn7lYDYCAA2QdLpA mD/KcuGLf+h9ctMm6DtywhizRP7cXrVhlEnXqj0MrinmYep3APu7VTklbrxyxfAYlpsK RgZXc+xJnLw2UEceYbdWSUY770Pb1m7ABofTBjCtArcXYbkD9Hbc4MLxHt2dIOIDTgNm QYe6QAL/sYE9qK1CU1yfnQnjSNfLUL3s3t7fZOSwzBDC/n1gb+BS/QWKdYTaLLjBESuj 0JxVvlupXWaWAx+Z87mcObv7Ay0WHKeaIFgSXjcRrQpWyRyjv7HPce2pnN7ybw9f9UYq kTPA== X-Gm-Message-State: AIVw111DaAJhHT0nXz/qUcZ9x7hyBFtJXFkO0LjZUyVxl6JdU65ov+FL WWCkPgR12MYrdVYw X-Received: by 10.200.8.152 with SMTP id v24mr1560241qth.68.1501583935663; Tue, 01 Aug 2017 03:38:55 -0700 (PDT) Received: from anup-HP-Compaq-8100-Elite-CMT-PC.dhcp.avagotech.net ([192.19.237.250]) by smtp.gmail.com with ESMTPSA id e32sm21784162qtb.63.2017.08.01.03.38.51 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 01 Aug 2017 03:38:55 -0700 (PDT) From: Anup Patel To: Rob Herring , Mark Rutland , Vinod Koul , Dan Williams Cc: Florian Fainelli , Scott Branden , Ray Jui , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, dmaengine@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com, Anup Patel Subject: [PATCH v2 05/16] dmaengine: bcm-sba-raid: Remove redundant resp_dma from sba_request Date: Tue, 1 Aug 2017 16:07:49 +0530 Message-Id: <1501583880-32072-6-git-send-email-anup.patel@broadcom.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1501583880-32072-1-git-send-email-anup.patel@broadcom.com> References: <1501583880-32072-1-git-send-email-anup.patel@broadcom.com> Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Both resp and resp_dma are redundant in sba_request because resp is unused and resp_dma carries same information present in tx.phys of sba_request. This patch removes both resp and resp_dma from sba_request. Signed-off-by: Anup Patel --- drivers/dma/bcm-sba-raid.c | 34 +++++++++++++++++----------------- 1 file changed, 17 insertions(+), 17 deletions(-) diff --git a/drivers/dma/bcm-sba-raid.c b/drivers/dma/bcm-sba-raid.c index e8863e9..7d08d4e 100644 --- a/drivers/dma/bcm-sba-raid.c +++ b/drivers/dma/bcm-sba-raid.c @@ -113,8 +113,6 @@ struct sba_request { struct list_head next; atomic_t next_pending_count; /* BRCM message data */ - void *resp; - dma_addr_t resp_dma; struct brcm_sba_command *cmds; struct brcm_message msg; struct dma_async_tx_descriptor tx; @@ -513,6 +511,7 @@ static void sba_fillup_interrupt_msg(struct sba_request *req, { u64 cmd; u32 c_mdata; + dma_addr_t resp_dma = req->tx.phys; struct brcm_sba_command *cmdsp = cmds; /* Type-B command to load dummy data into buf0 */ @@ -528,7 +527,7 @@ static void sba_fillup_interrupt_msg(struct sba_request *req, cmdsp->cmd = cmd; *cmdsp->cmd_dma = cpu_to_le64(cmd); cmdsp->flags = BRCM_SBA_CMD_TYPE_B; - cmdsp->data = req->resp_dma; + cmdsp->data = resp_dma; cmdsp->data_len = req->sba->hw_resp_size; cmdsp++; @@ -549,11 +548,11 @@ static void sba_fillup_interrupt_msg(struct sba_request *req, cmdsp->flags = BRCM_SBA_CMD_TYPE_A; if (req->sba->hw_resp_size) { cmdsp->flags |= BRCM_SBA_CMD_HAS_RESP; - cmdsp->resp = req->resp_dma; + cmdsp->resp = resp_dma; cmdsp->resp_len = req->sba->hw_resp_size; } cmdsp->flags |= BRCM_SBA_CMD_HAS_OUTPUT; - cmdsp->data = req->resp_dma; + cmdsp->data = resp_dma; cmdsp->data_len = req->sba->hw_resp_size; cmdsp++; @@ -600,6 +599,7 @@ static void sba_fillup_memcpy_msg(struct sba_request *req, { u64 cmd; u32 c_mdata; + dma_addr_t resp_dma = req->tx.phys; struct brcm_sba_command *cmdsp = cmds; /* Type-B command to load data into buf0 */ @@ -636,7 +636,7 @@ static void sba_fillup_memcpy_msg(struct sba_request *req, cmdsp->flags = BRCM_SBA_CMD_TYPE_A; if (req->sba->hw_resp_size) { cmdsp->flags |= BRCM_SBA_CMD_HAS_RESP; - cmdsp->resp = req->resp_dma; + cmdsp->resp = resp_dma; cmdsp->resp_len = req->sba->hw_resp_size; } cmdsp->flags |= BRCM_SBA_CMD_HAS_OUTPUT; @@ -719,6 +719,7 @@ static void sba_fillup_xor_msg(struct sba_request *req, u64 cmd; u32 c_mdata; unsigned int i; + dma_addr_t resp_dma = req->tx.phys; struct brcm_sba_command *cmdsp = cmds; /* Type-B command to load data into buf0 */ @@ -774,7 +775,7 @@ static void sba_fillup_xor_msg(struct sba_request *req, cmdsp->flags = BRCM_SBA_CMD_TYPE_A; if (req->sba->hw_resp_size) { cmdsp->flags |= BRCM_SBA_CMD_HAS_RESP; - cmdsp->resp = req->resp_dma; + cmdsp->resp = resp_dma; cmdsp->resp_len = req->sba->hw_resp_size; } cmdsp->flags |= BRCM_SBA_CMD_HAS_OUTPUT; @@ -863,6 +864,7 @@ static void sba_fillup_pq_msg(struct sba_request *req, u64 cmd; u32 c_mdata; unsigned int i; + dma_addr_t resp_dma = req->tx.phys; struct brcm_sba_command *cmdsp = cmds; if (pq_continue) { @@ -956,7 +958,7 @@ static void sba_fillup_pq_msg(struct sba_request *req, cmdsp->flags = BRCM_SBA_CMD_TYPE_A; if (req->sba->hw_resp_size) { cmdsp->flags |= BRCM_SBA_CMD_HAS_RESP; - cmdsp->resp = req->resp_dma; + cmdsp->resp = resp_dma; cmdsp->resp_len = req->sba->hw_resp_size; } cmdsp->flags |= BRCM_SBA_CMD_HAS_OUTPUT; @@ -983,7 +985,7 @@ static void sba_fillup_pq_msg(struct sba_request *req, cmdsp->flags = BRCM_SBA_CMD_TYPE_A; if (req->sba->hw_resp_size) { cmdsp->flags |= BRCM_SBA_CMD_HAS_RESP; - cmdsp->resp = req->resp_dma; + cmdsp->resp = resp_dma; cmdsp->resp_len = req->sba->hw_resp_size; } cmdsp->flags |= BRCM_SBA_CMD_HAS_OUTPUT; @@ -1037,6 +1039,7 @@ static void sba_fillup_pq_single_msg(struct sba_request *req, u64 cmd; u32 c_mdata; u8 pos, dpos = raid6_gflog[scf]; + dma_addr_t resp_dma = req->tx.phys; struct brcm_sba_command *cmdsp = cmds; if (!dst_p) @@ -1115,7 +1118,7 @@ static void sba_fillup_pq_single_msg(struct sba_request *req, cmdsp->flags = BRCM_SBA_CMD_TYPE_A; if (req->sba->hw_resp_size) { cmdsp->flags |= BRCM_SBA_CMD_HAS_RESP; - cmdsp->resp = req->resp_dma; + cmdsp->resp = resp_dma; cmdsp->resp_len = req->sba->hw_resp_size; } cmdsp->flags |= BRCM_SBA_CMD_HAS_OUTPUT; @@ -1236,7 +1239,7 @@ static void sba_fillup_pq_single_msg(struct sba_request *req, cmdsp->flags = BRCM_SBA_CMD_TYPE_A; if (req->sba->hw_resp_size) { cmdsp->flags |= BRCM_SBA_CMD_HAS_RESP; - cmdsp->resp = req->resp_dma; + cmdsp->resp = resp_dma; cmdsp->resp_len = req->sba->hw_resp_size; } cmdsp->flags |= BRCM_SBA_CMD_HAS_OUTPUT; @@ -1458,7 +1461,7 @@ static void sba_receive_message(struct mbox_client *cl, void *msg) static int sba_prealloc_channel_resources(struct sba_device *sba) { - int i, j, p, ret = 0; + int i, j, ret = 0; struct sba_request *req = NULL; sba->resp_base = dma_alloc_coherent(sba->dma_dev.dev, @@ -1492,16 +1495,13 @@ static int sba_prealloc_channel_resources(struct sba_device *sba) goto fail_free_cmds_pool; } - for (i = 0, p = 0; i < sba->max_req; i++) { + for (i = 0; i < sba->max_req; i++) { req = &sba->reqs[i]; INIT_LIST_HEAD(&req->node); req->sba = sba; req->flags = SBA_REQUEST_STATE_FREE; INIT_LIST_HEAD(&req->next); atomic_set(&req->next_pending_count, 0); - req->resp = sba->resp_base + p; - req->resp_dma = sba->resp_dma_base + p; - p += sba->hw_resp_size; req->cmds = devm_kcalloc(sba->dev, sba->max_cmd_per_req, sizeof(*req->cmds), GFP_KERNEL); if (!req->cmds) { @@ -1519,7 +1519,7 @@ static int sba_prealloc_channel_resources(struct sba_device *sba) memset(&req->msg, 0, sizeof(req->msg)); dma_async_tx_descriptor_init(&req->tx, &sba->dma_chan); req->tx.tx_submit = sba_tx_submit; - req->tx.phys = req->resp_dma; + req->tx.phys = sba->resp_dma_base + i * sba->hw_resp_size; list_add_tail(&req->node, &sba->reqs_free_list); }