From patchwork Mon Oct 31 16:25:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arthur Simchaev X-Patchwork-Id: 13026098 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 C89CCFA3741 for ; Mon, 31 Oct 2022 16:26:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231674AbiJaQ0E (ORCPT ); Mon, 31 Oct 2022 12:26:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44284 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231624AbiJaQZ7 (ORCPT ); Mon, 31 Oct 2022 12:25:59 -0400 Received: from esa6.hgst.iphmx.com (esa6.hgst.iphmx.com [216.71.154.45]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D0C7512766; Mon, 31 Oct 2022 09:25:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1667233558; x=1698769558; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=bRKQ9sSqIIZS0Qkc9JECvRRYfZDd/bzOP/3pGDU3Yus=; b=kLZ/i8VssJw4aurIQ6/TGyEnGRz0O8O3PVhtxneudszoMBI8d5vpcKdR O8SrpVEuCeBrL8Tmlmm6nw6YcObXQVKwLKErZoxLjjBmBdmPoY271NoLi unbZUSKycKBxhKcEgAXPv38VW3HHogHvGThWIvzgsr4JyUL+1DvVLDOGU goffAFA09uIgMSQexvgAn2kl+qCNIj8mxYZWV6f5ra/CKFMK3TcqBiYJE StSoxwNeoAmOVlegZGgQl0oLW0V3UnQS3lxBsZS27dTs3I7rrfwO8fDA0 NauEOqwrl+Y5UpGYi7cpdFZz87mm0y3XGVmuXXzvdmZ3ZUaiIRJqbvYbZ Q==; X-IronPort-AV: E=Sophos;i="5.95,228,1661788800"; d="scan'208";a="215498916" Received: from uls-op-cesaip02.wdc.com (HELO uls-op-cesaep02.wdc.com) ([199.255.45.15]) by ob1.hgst.iphmx.com with ESMTP; 01 Nov 2022 00:25:58 +0800 IronPort-SDR: yD209zcjqBeHc+jCssz9nv+K0ZIQW5W4w/lvtCarF8gddX19tHcHyyXf+wE/KrrAXfqJ5I5iIT XPRPH/4qkANc5n/z7LYqUzKH3ld2rhqTY2HIwHJg6pmPBS6fhrC3jjUAEktjDnLf+NIXwCB0oJ 1TMU9utgg0k8/s5Spa1BIXRwEXR98VybwzRoB0X9vPIwmqgGBguoFjs8NrLFMcyTJkjrfkv917 2JwtSqMlsp/Xbh9VaKS1ppgUqVuQxRXfZ5C6mXvd0/fBTa9iTwhqd2hE0iIu6iy41Jyq1491qz xNyU2gr4gPHIu6Qdek3j83Wx Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep02.wdc.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 31 Oct 2022 08:39:30 -0700 IronPort-SDR: UxlQ/zaQbgpj/p1m/kAkcQbTJ7mCZHZrfA+fLCc/sHZxLQ6rs434p+xL2PMMYHHv/zl4txyxPj +lI//WGikiIIHqqyXaAC/MmwVdDAUCzLy3XI8VSdJQEk2nQWwHeVIsMv6/EJTSa/YZetcOSkDn bi1kDOUeOLGSwqFHOlbS0TUDDYzhFM2k5M554VzGqOt349rOZmdfqBmd5tZZsrd5p1MNYHCVF2 VgGXbvxb5N8trSsl8J+Dd++EYqj3bMcPOxkvKUZwwNbcRE4JI6VVtcYUC/o6E8Gtbm07LweY+l Mzk= WDCIronportException: Internal Received: from ilb001078.ad.shared (HELO ilb001078.sdcorp.global.sandisk.com) ([10.45.31.219]) by uls-op-cesaip02.wdc.com with ESMTP; 31 Oct 2022 09:25:56 -0700 From: Arthur Simchaev To: martin.petersen@oracle.com Cc: avri.altman@wdc.com, Avi.Shchislowski@wdc.com, beanhuo@micron.com, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, Arthur Simchaev Subject: [PATCH 2/4] ufs: core: Remove redundant desc_size variable from hba Date: Mon, 31 Oct 2022 18:25:22 +0200 Message-Id: <1667233524-13715-3-git-send-email-Arthur.Simchaev@wdc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1667233524-13715-1-git-send-email-Arthur.Simchaev@wdc.com> References: <1667233524-13715-1-git-send-email-Arthur.Simchaev@wdc.com> Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Always read the descriptor with QUERY_DESC_MAX_SIZE. According to the spec, the device returns the actual size Signed-off-by: Arthur Simchaev --- drivers/ufs/core/ufshcd.c | 51 ++++++++++++----------------------------------- include/ufs/ufshcd.h | 1 - 2 files changed, 13 insertions(+), 39 deletions(-) diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index de4e7e7..aa46292 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -3377,28 +3377,11 @@ int ufshcd_query_descriptor_retry(struct ufs_hba *hba, void ufshcd_map_desc_id_to_length(struct ufs_hba *hba, enum desc_idn desc_id, int *desc_len) { - if (desc_id >= QUERY_DESC_IDN_MAX || desc_id == QUERY_DESC_IDN_RFU_0 || - desc_id == QUERY_DESC_IDN_RFU_1) - *desc_len = 0; - else - *desc_len = hba->desc_size[desc_id]; + /*Always returns QUERY_DESC_MAX_SIZE*/ + *desc_len = QUERY_DESC_MAX_SIZE; } EXPORT_SYMBOL(ufshcd_map_desc_id_to_length); -static void ufshcd_update_desc_length(struct ufs_hba *hba, - 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_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; -} - /** * ufshcd_read_desc_param - read the specified descriptor parameter * @hba: Pointer to adapter instance @@ -3470,7 +3453,6 @@ 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, desc_index, buff_len); if (is_kmalloc) { /* Make sure we don't copy more data than available */ @@ -4905,7 +4887,7 @@ static void ufshcd_setup_links(struct ufs_hba *hba, struct scsi_device *sdev) */ static void ufshcd_lu_init(struct ufs_hba *hba, struct scsi_device *sdev) { - int len = hba->desc_size[QUERY_DESC_IDN_UNIT]; + int len = QUERY_DESC_MAX_SIZE; u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun); u8 lun_qdepth = hba->nutrs; u8 *desc_buf; @@ -7446,25 +7428,24 @@ static u32 ufshcd_find_max_sup_active_icc_level(struct ufs_hba *hba, static void ufshcd_set_active_icc_lvl(struct ufs_hba *hba) { int ret; - int buff_len = hba->desc_size[QUERY_DESC_IDN_POWER]; u8 *desc_buf; u32 icc_level; - desc_buf = kmalloc(buff_len, GFP_KERNEL); + desc_buf = kmalloc(QUERY_DESC_MAX_SIZE, GFP_KERNEL); if (!desc_buf) return; ret = ufshcd_read_desc_param(hba, QUERY_DESC_IDN_POWER, 0, 0, - desc_buf, buff_len); + desc_buf, QUERY_DESC_MAX_SIZE); if (ret) { dev_err(hba->dev, - "%s: Failed reading power descriptor.len = %d ret = %d", - __func__, buff_len, ret); + "%s: Failed reading power descriptor ret = %d", + __func__, ret); goto out; } icc_level = ufshcd_find_max_sup_active_icc_level(hba, desc_buf, - buff_len); + QUERY_DESC_MAX_SIZE); dev_dbg(hba->dev, "%s: setting icc_level 0x%x", __func__, icc_level); ret = ufshcd_query_attr_retry(hba, UPIU_QUERY_OPCODE_WRITE_ATTR, @@ -7688,7 +7669,7 @@ static int ufs_get_device_desc(struct ufs_hba *hba) } err = ufshcd_read_desc_param(hba, QUERY_DESC_IDN_DEVICE, 0, 0, desc_buf, - hba->desc_size[QUERY_DESC_IDN_DEVICE]); + QUERY_DESC_MAX_SIZE); if (err) { dev_err(hba->dev, "%s: Failed reading Device Desc. err = %d\n", __func__, err); @@ -7935,18 +7916,16 @@ static void ufshcd_clear_dbg_ufs_stats(struct ufs_hba *hba) static int ufshcd_device_geo_params_init(struct ufs_hba *hba) { int err; - size_t buff_len; u8 *desc_buf; - buff_len = hba->desc_size[QUERY_DESC_IDN_GEOMETRY]; - desc_buf = kmalloc(buff_len, GFP_KERNEL); + desc_buf = kmalloc(QUERY_DESC_MAX_SIZE, GFP_KERNEL); if (!desc_buf) { err = -ENOMEM; goto out; } err = ufshcd_read_desc_param(hba, QUERY_DESC_IDN_GEOMETRY, 0, 0, - desc_buf, buff_len); + desc_buf, QUERY_DESC_MAX_SIZE); if (err) { dev_err(hba->dev, "%s: Failed reading Geometry Desc. err = %d\n", __func__, err); @@ -7958,7 +7937,7 @@ static int ufshcd_device_geo_params_init(struct ufs_hba *hba) else if (desc_buf[GEOMETRY_DESC_PARAM_MAX_NUM_LUN] == 0) hba->dev_info.max_lu_supported = 8; - if (hba->desc_size[QUERY_DESC_IDN_GEOMETRY] >= + if (desc_buf[QUERY_DESC_LENGTH_OFFSET] >= GEOMETRY_DESC_PARAM_HPB_MAX_ACTIVE_REGS) ufshpb_get_geo_info(hba, desc_buf); @@ -8043,11 +8022,7 @@ static int ufshcd_set_dev_ref_clk(struct ufs_hba *hba) static int ufshcd_device_params_init(struct ufs_hba *hba) { bool flag; - int ret, i; - - /* Init device descriptor sizes */ - for (i = 0; i < QUERY_DESC_IDN_MAX; i++) - hba->desc_size[i] = QUERY_DESC_MAX_SIZE; + int ret; /* Init UFS geometry descriptor related parameters */ ret = ufshcd_device_geo_params_init(hba); diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h index 96538eb..c3a0875 100644 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -952,7 +952,6 @@ struct ufs_hba { bool is_urgent_bkops_lvl_checked; struct rw_semaphore clk_scaling_lock; - unsigned char desc_size[QUERY_DESC_IDN_MAX]; atomic_t scsi_block_reqs_cnt; struct device bsg_dev;