From patchwork Wed Jun 3 09:19:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bean Huo X-Patchwork-Id: 11585387 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 3C38C1392 for ; Wed, 3 Jun 2020 09:20:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 21D2520674 for ; Wed, 3 Jun 2020 09:20:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="a1dRKcsX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726888AbgFCJUc (ORCPT ); Wed, 3 Jun 2020 05:20:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36458 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726218AbgFCJU1 (ORCPT ); Wed, 3 Jun 2020 05:20:27 -0400 Received: from mail-ej1-x642.google.com (mail-ej1-x642.google.com [IPv6:2a00:1450:4864:20::642]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8D84EC05BD43; Wed, 3 Jun 2020 02:20:25 -0700 (PDT) Received: by mail-ej1-x642.google.com with SMTP id f7so1391157ejq.6; Wed, 03 Jun 2020 02:20:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Q95qHoKQVgshqw0ghfJQeL4NL6m9CpdNwWifAaKLFtc=; b=a1dRKcsXzPT7/8nWrC4VZaeR7YDw02C/6aHacGu5vuOLbvbvwCyiF2dyNYk5DyJ3Kl MAwO8gypA1msXDmORABgyDYQODgRevPwvvOddPfYkxvocIpBNYhRdICe+0PVaGcnPpbw AASLFSQRL/MkeLNui2tEMXLMXDY868Bj8AMb5yJ9/7fRAK/vQ+ma+/khX+KiaoWRiJ3o vBk45uVjCPubkPcywcAPWRY28S03tEVe2vUFozKS0ancrlRbQ5aXG4EujqnMZQ938+G5 qlWcov5+CydFFhht1xEpEw2UxUWMXDGc1JpYTFHYZOzs/tDVuKaBMerpUB2lBzRr51/S PQog== 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=Q95qHoKQVgshqw0ghfJQeL4NL6m9CpdNwWifAaKLFtc=; b=L030gZ94B8xz1+ef2vzBbhcxglP4h/IWtsha7MlLZ4l65Y8grrqyfyWSIyDV7YBrpo 6Za0HLD9zR5/4ne8RR/h7ZelETEa4ngmGJTHbQ3gYQpfvjLc7q6XKMvKLiGhi0Elx/0X /Dm5Su+4NuSZAIGLAelTxaqLY17hX9aSvOd3x2W3lZnKzGMkau6e8zXG3L8jaztZOIv6 OP4FBZLST+tBvd7EG/3S/5Sdaos8obeRggGYxP2IoA2NC3gT0ksmDzXrzhL2xMeyDq/j tQuIK+zoM2DiUWtc9u0Z7LCOM32simx+14dE0OQduq+V62CKw9zYpBoaFkB49zf4QgGn 69VA== X-Gm-Message-State: AOAM530bBG8KfknegoRkzvFher/pUfuxRd2UtdahDFluDmfyeHB2VDb5 vnGxn80wPZEfsOaCmtqOUWE= X-Google-Smtp-Source: ABdhPJz2YuxsHU8XJEnnqJiRuVIc8v0w9TR6f+5y6O8Uy9eveeYV2eS4etq0B0vYPFhh908E2u0qtQ== X-Received: by 2002:a17:906:6156:: with SMTP id p22mr25758769ejl.329.1591176023678; Wed, 03 Jun 2020 02:20:23 -0700 (PDT) Received: from localhost.localdomain ([2a01:598:d00c:464c:92b:aecc:3637:dc7c]) by smtp.gmail.com with ESMTPSA id 64sm865636eda.85.2020.06.03.02.20.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 03 Jun 2020 02:20:23 -0700 (PDT) From: Bean Huo To: alim.akhtar@samsung.com, avri.altman@wdc.com, asutoshd@codeaurora.org, jejb@linux.ibm.com, martin.petersen@oracle.com, stanley.chu@mediatek.com, beanhuo@micron.com, bvanassche@acm.org, tomas.winkler@intel.com, cang@codeaurora.org Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, beanhuo@outlook.com Subject: [RESENT PATCH v5 5/5] scsi: ufs: add compatibility with 3.1 UFS unit descriptor length Date: Wed, 3 Jun 2020 11:19:59 +0200 Message-Id: <20200603091959.27618-6-huobean@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200603091959.27618-1-huobean@gmail.com> References: <20200603091959.27618-1-huobean@gmail.com> Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Bean Huo For UFS 3.1, the normal unit descriptor is 10 bytes larger than the RPMB unit, however, both descriptors share the same desc_idn, to cover both unit descriptors with one length, we choose the normal unit descriptor length by desc_index. Signed-off-by: Bean Huo Reviewed-by: Avri Altman --- drivers/scsi/ufs/ufs.h | 1 + drivers/scsi/ufs/ufshcd.c | 11 ++++++++--- 2 files changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h index 8770255b5dc0..250e1a905a14 100644 --- a/drivers/scsi/ufs/ufs.h +++ b/drivers/scsi/ufs/ufs.h @@ -63,6 +63,7 @@ #define UFS_UPIU_MAX_UNIT_NUM_ID 0x7F #define UFS_MAX_LUNS (SCSI_W_LUN_BASE + UFS_UPIU_MAX_UNIT_NUM_ID) #define UFS_UPIU_WLUN_ID (1 << 7) +#define UFS_RPMB_UNIT 0xC4 /* WriteBooster buffer is available only for the logical unit from 0 to 7 */ #define UFS_UPIU_MAX_WB_LUN_ID 8 diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 5ad0eebccc98..f283b9eb97ac 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -3070,11 +3070,16 @@ void ufshcd_map_desc_id_to_length(struct ufs_hba *hba, enum desc_idn desc_id, EXPORT_SYMBOL(ufshcd_map_desc_id_to_length); static void ufshcd_update_desc_length(struct ufs_hba *hba, - enum desc_idn desc_id, + enum desc_idn desc_id, int desc_index, unsigned char desc_len) { if (hba->desc_size[desc_id] == QUERY_DESC_MAX_SIZE && - desc_id != QUERY_DESC_IDN_STRING) + desc_id != QUERY_DESC_IDN_STRING && desc_index != UFS_RPMB_UNIT) + /* For UFS 3.1, the normal unit descriptor is 10 bytes larger + * than the RPMB unit, however, both descriptors share the same + * desc_idn, to cover both unit descriptors with one length, we + * choose the normal unit descriptor length by desc_index. + */ hba->desc_size[desc_id] = desc_len; } @@ -3143,7 +3148,7 @@ int ufshcd_read_desc_param(struct ufs_hba *hba, /* Update descriptor length */ buff_len = desc_buf[QUERY_DESC_LENGTH_OFFSET]; - ufshcd_update_desc_length(hba, desc_id, buff_len); + ufshcd_update_desc_length(hba, desc_id, desc_index, buff_len); /* Check wherher we will not copy more data, than available */ if (is_kmalloc && (param_offset + param_size) > buff_len)