From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D5DDE376468; Thu, 3 Sep 2026 03:42:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788406950; cv=none; b=EwXXU4bvP75eIh8SAOSuV8FZk8iK2JnaFmLegq+9ThTZCvygseCaniHjS+DtCzjAgEuaR2W3sPo1ev10gpDPKnAIvaMDVJOXWdaRh4s5yvBXK86y3oCq+ahvkOyc536ZYdAEEOCqVIhhu3c3PgKFYBO8eYgCCbPwtnJK5zzGn8A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788406950; c=relaxed/simple; bh=qsGEd0KXlTnqzF7nlTZeADt4SwJufjuUfh60ga1DdsM=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=TbLSMxY/olnFg6itg6XgBUTnY5Cy3SA+BVtOo0So6RAMF1rJilgNr0S34Jc4enCaDJyIopbdg+03Pa3a0fXgLoHnQlip5h+8iiL2UxXzZFeyA/OwkylAXrBaoP0Z6TvTXORvZ1sJyLhIFVC0JAitl4gR5JJawH3I6WzfCgSCxac= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=YqgiSfuq; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="YqgiSfuq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E76181F00A3D; Thu, 3 Sep 2026 03:42:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788406944; bh=LSswKHMdAi/dsbRGIaFaHwDVI3E91CJKyT5dfZ2W6OQ=; h=From:To:Subject:Date:In-Reply-To:References; b=YqgiSfuqR6lPcdob/zKlKrLjKF+VIfO9QBmdxr4v4qDsgzSi7011zRPbYMLGUTxGx dhMGgBdjMzYUlE6X3Ur1Udr8NWyH9Ufb5AvYr2DFG3JuZtgn4Ul0Tx5FbvZ26f6Poc b9WYqsHYYVALoxN3PyquswAzlkzRElNGsSWIhb1j4DAYaGSU7P4CGqj9zXDbJajkXt 1RCvBvfkdNTGY4WjUebziwm8PYeEZ8FQeADenjCzfL/YzzzqPA5VkWKcI/OJ74bl3M eFhewgMawcDCpa0+D+YTt6AZMyZlOzr0dCzT+SE8dNxLbEgLvZs0i5PrpLb74q5DRe 5BsbGEaXud/FA== From: Damien Le Moal To: "Martin K . Petersen" , "James E . J . Bottomley" , linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org, Niklas Cassel , linux-usb@vger.kernel.org, Alan Stern , Greg Kroah-Hartman , linux-s390@vger.kernel.org, Heiko Carstens Subject: [PATCH v2 05/40] scsi: prepare for using 16-bits defined sense codes Date: Thu, 3 Sep 2026 12:41:26 +0900 Message-ID: <20260903034201.112211-6-dlemoal@kernel.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260903034201.112211-1-dlemoal@kernel.org> References: <20260903034201.112211-1-dlemoal@kernel.org> Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit In preparation for handling sense codes and their qualifiers as a single 16-bits sense code field, with the values defined as macros in include/scsi/scsi_sense.h, modify the definition of the structures scsi_failure and scsi_sense_hdr to introduce a 16-bits sense_code field as a union with the existing 8-bits asc and ascq fields. This temporary modification allows accessing either the asc and ascq fields individually, or their combination as the 16-bits sense_code field. The helper functions scsi_sense_asc(), scsi_sense_ascq() are defined to allow accessing the 8-bits ASC and ASCQ values from the sense_code filed of struct scsi_sense_hdr. The helper functions scsi_failure_asc() and scsi_failure_ascq() provide the same for the sense code field of struct scsi_failure. The helper functions scsi_set_sense_buffer() and scsi_set_sense() are also added to wrap calls to scsi_build_sense_buffer() and scsi_build_sense() using a 16-bits sense code aregument instead of the 8-bits ASC and ASCQ arguments. Signed-off-by: Damien Le Moal --- include/scsi/scsi_cmnd.h | 7 +++++++ include/scsi/scsi_common.h | 31 +++++++++++++++++++++++++++++-- include/scsi/scsi_device.h | 25 +++++++++++++++++++++++-- 3 files changed, 59 insertions(+), 4 deletions(-) diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index 8ecfb94049db..bf6d69f0249f 100644 --- a/include/scsi/scsi_cmnd.h +++ b/include/scsi/scsi_cmnd.h @@ -394,6 +394,13 @@ static inline unsigned scsi_transfer_length(struct scsi_cmnd *scmd) extern void scsi_build_sense(struct scsi_cmnd *scmd, int desc, u8 key, u8 asc, u8 ascq); +static inline void scsi_set_sense(struct scsi_cmnd *scmd, int desc, + u8 key, u16 code) +{ + scsi_build_sense(scmd, desc, key, scsi_sense_code_asc(code), + scsi_sense_code_ascq(code)); +} + struct request *scsi_alloc_request(struct request_queue *q, blk_opf_t opf, blk_mq_req_flags_t flags); diff --git a/include/scsi/scsi_common.h b/include/scsi/scsi_common.h index 00c8a16d3cd2..6fb2c290ba33 100644 --- a/include/scsi/scsi_common.h +++ b/include/scsi/scsi_common.h @@ -71,8 +71,18 @@ extern u64 scsilun_to_int(struct scsi_lun *); struct scsi_sense_hdr { /* See SPC-3 section 4.5 */ u8 response_code; /* permit: 0x0, 0x70, 0x71, 0x72, 0x73 */ u8 sense_key; - u8 asc; - u8 ascq; + union { + struct { +#if defined(__BIG_ENDIAN) + u8 asc; + u8 ascq; +#elif defined(__LITTLE_ENDIAN) + u8 ascq; + u8 asc; +#endif + }; + u16 sense_code; + }; u8 byte4; u8 byte5; u8 byte6; @@ -87,10 +97,27 @@ static inline bool scsi_sense_valid(const struct scsi_sense_hdr *sshdr) return (sshdr->response_code & 0x70) == 0x70; } +static inline u8 scsi_sense_asc(const struct scsi_sense_hdr *sshdr) +{ + return scsi_sense_code_asc(sshdr->sense_code); +} + +static inline u8 scsi_sense_ascq(const struct scsi_sense_hdr *sshdr) +{ + return scsi_sense_code_ascq(sshdr->sense_code); +} + extern bool scsi_normalize_sense(const u8 *sense_buffer, int sb_len, struct scsi_sense_hdr *sshdr); extern void scsi_build_sense_buffer(int desc, u8 *buf, u8 key, u8 asc, u8 ascq); + +static inline void scsi_set_sense_buffer(int desc, u8 *buf, u8 key, u16 code) +{ + scsi_build_sense_buffer(desc, buf, key, scsi_sense_code_asc(code), + scsi_sense_code_ascq(code)); +} + int scsi_set_sense_information(u8 *buf, int buf_len, u64 info); int scsi_set_sense_field_pointer(u8 *buf, int buf_len, u16 fp, u8 bp, bool cd); extern const u8 * scsi_sense_desc_find(const u8 * sense_buffer, int sb_len, diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h index e321471e8ca2..11910142ac50 100644 --- a/include/scsi/scsi_device.h +++ b/include/scsi/scsi_device.h @@ -518,6 +518,7 @@ extern void scsi_sanitize_inquiry_string(unsigned char *s, int len); * to match any sense key, ASC, and ASCQ value. */ #define SCMD_FAILURE_SENSE_KEY_ANY 0xff +#define SCMD_FAILURE_SENSE_CODE_ANY 0xffff #define SCMD_FAILURE_ASC_ANY 0xff #define SCMD_FAILURE_ASCQ_ANY 0xff /* Always retry a matching failure. */ @@ -526,8 +527,18 @@ extern void scsi_sanitize_inquiry_string(unsigned char *s, int len); struct scsi_failure { int result; u8 sense_key; - u8 asc; - u8 ascq; + union { + struct { +#if defined(__BIG_ENDIAN) + u8 asc; + u8 ascq; +#elif defined(__LITTLE_ENDIAN) + u8 ascq; + u8 asc; +#endif + }; + u16 sense_code; + }; /* * Number of times scsi_execute_cmd will retry the failure. It does * not count for the total_allowed. @@ -537,6 +548,16 @@ struct scsi_failure { s8 retries; }; +static inline u8 scsi_failure_asc(const struct scsi_failure *failure) +{ + return scsi_sense_code_asc(failure->sense_code); +} + +static inline u8 scsi_failure_ascq(const struct scsi_failure *failure) +{ + return scsi_sense_code_ascq(failure->sense_code); +} + struct scsi_failures { /* * If a scsi_failure does not have a retry limit setup this limit will -- 2.55.0