From patchwork Mon Jan 20 14:38:38 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Veerabhadrarao Badiganti X-Patchwork-Id: 11342413 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D931E6C1 for ; Mon, 20 Jan 2020 14:39:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B773C22314 for ; Mon, 20 Jan 2020 14:39:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="KJm8BTuv" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726738AbgATOj2 (ORCPT ); Mon, 20 Jan 2020 09:39:28 -0500 Received: from mail26.static.mailgun.info ([104.130.122.26]:22211 "EHLO mail26.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726642AbgATOj2 (ORCPT ); Mon, 20 Jan 2020 09:39:28 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1579531168; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=BzDRV7ulYCXM+3B574lgGPBya371clGZvJ4IdiMMJzI=; b=KJm8BTuvbMsRwp9bj8MwsakuRbJZl4kIOkfbWJUuH7wx53z6o1c9SE7vJq2niTsmkIKGFgJb rmdz5x9oTFQGBmAn5YDmiDMjXMutv66hVzqZXSZwbbbn2uj49EYt1vuGciBl2L842l7F0pAu M+bk2MwtNKj/alo8yLs8Nkikg4k= X-Mailgun-Sending-Ip: 104.130.122.26 X-Mailgun-Sid: WyJiYTcxMiIsICJsaW51eC1tbWNAdmdlci5rZXJuZWwub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by mxa.mailgun.org with ESMTP id 5e25bb9a.7fd55fd684c8-smtp-out-n01; Mon, 20 Jan 2020 14:39:22 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 39AA4C4479C; Mon, 20 Jan 2020 14:39:22 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 Received: from vbadigan-linux.qualcomm.com (blr-c-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: vbadigan) by smtp.codeaurora.org (Postfix) with ESMTPSA id 28D8AC433CB; Mon, 20 Jan 2020 14:39:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 28D8AC433CB Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=vbadigan@codeaurora.org From: Veerabhadrarao Badiganti To: ulf.hansson@linaro.org, adrian.hunter@intel.com Cc: asutoshd@codeaurora.org, stummala@codeaurora.org, sayalil@codeaurora.org, cang@codeaurora.org, rampraka@codeaurora.org, linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Veerabhadrarao Badiganti Subject: [PATCH V3] mmc: sdhci: Let a vendor driver supply and update ADMA descriptor size Date: Mon, 20 Jan 2020 20:08:38 +0530 Message-Id: <1579531122-28341-1-git-send-email-vbadigan@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1579519045-26467-1-git-send-email-vbadigan@codeaurora.org> References: <1579519045-26467-1-git-send-email-vbadigan@codeaurora.org> Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org Let a vendor driver supply the maximum descriptor size that it can operate on. ADMA descriptor table would be allocated using this supplied size. If any SD Host controller is of version prior to v4.10 spec but supports 16byte descriptor, this change allows them to supply correct descriptor size for ADMA table allocation. Also let a vendor driver update the descriptor size by overriding sdhc_host->desc_size if it has to operates on a different descriptor sizes in different conditions. Suggested-by: Adrian Hunter Signed-off-by: Veerabhadrarao Badiganti Acked-by: Adrian Hunter --- Thanks Adrian. Hi Ulf, Can you pick this patch instead of earlier one? This is more clean change, sorry for the multiple interations. Otherwise let me know, I will make these changes as seperate patch. --- drivers/mmc/host/sdhci.c | 16 +++++++--------- drivers/mmc/host/sdhci.h | 3 ++- 2 files changed, 9 insertions(+), 10 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 3140fe2..7a7a18e 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -3821,15 +3821,13 @@ int sdhci_setup_host(struct sdhci_host *host) dma_addr_t dma; void *buf; - if (host->flags & SDHCI_USE_64_BIT_DMA) { - host->adma_table_sz = host->adma_table_cnt * - SDHCI_ADMA2_64_DESC_SZ(host); - host->desc_sz = SDHCI_ADMA2_64_DESC_SZ(host); - } else { - host->adma_table_sz = host->adma_table_cnt * - SDHCI_ADMA2_32_DESC_SZ; - host->desc_sz = SDHCI_ADMA2_32_DESC_SZ; - } + if (!(host->flags & SDHCI_USE_64_BIT_DMA)) + host->alloc_desc_sz = SDHCI_ADMA2_32_DESC_SZ; + else if (!host->alloc_desc_sz) + host->alloc_desc_sz = SDHCI_ADMA2_64_DESC_SZ(host); + + host->desc_sz = host->alloc_desc_sz; + host->adma_table_sz = host->adma_table_cnt * host->desc_sz; host->align_buffer_sz = SDHCI_MAX_SEGS * SDHCI_ADMA2_ALIGN; /* diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 0ed3e0e..10bda3a 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -554,7 +554,8 @@ struct sdhci_host { dma_addr_t adma_addr; /* Mapped ADMA descr. table */ dma_addr_t align_addr; /* Mapped bounce buffer */ - unsigned int desc_sz; /* ADMA descriptor size */ + unsigned int desc_sz; /* ADMA current descriptor size */ + unsigned int alloc_desc_sz; /* ADMA descr. max size host supports */ struct workqueue_struct *complete_wq; /* Request completion wq */ struct work_struct complete_work; /* Request completion work */