From patchwork Mon Feb 10 19:12:30 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Kai_M=C3=A4kisara?= X-Patchwork-Id: 865501 Received: from fgw20-4.mail.saunalahti.fi (fgw20-4.mail.saunalahti.fi [62.142.5.107]) (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 8FDD225E446 for ; Mon, 10 Feb 2025 19:14:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=62.142.5.107 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739214850; cv=none; b=QFfhmGYTMj3z8yxE3qczWsJ0KeEz1vdLJz+fT/th9XSGOMmezr+AJcF+sKMb8Z2rG1OtBT8b1CDhYZiGVf1ioemlT9qgtD4oSNjLEH9TXqQekVHf6b6Fuu1UZwxFTvRBZ1vpr60v1WZ28qFG+6A96txZBOj+S75BTqLyYFdhsWE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739214850; c=relaxed/simple; bh=YnMzgrrGTHFRNSeC9OtOmHTI5f+OPlZ3b9JpXoUOztQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=sjRLyeNlw80r8eJApSGWmzX81OLjlyu7EtFvR2c0XRQtedOLxWP2BIu8IjwtNCqbH5GxY9XlEEtuUEzPKyfHothD3+yXK/jLKi/X0wq5XML9FClCjLwXwz2wN2hCVRYgaaMUKQ6Z/JKHu7YnaYqCoD8wG0MaXi1etjDBhzNZUFY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=kolumbus.fi; spf=pass smtp.mailfrom=kolumbus.fi; dkim=pass (2048-bit key) header.d=kolumbus.fi header.i=@kolumbus.fi header.b=GxY5bWKk; arc=none smtp.client-ip=62.142.5.107 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=kolumbus.fi Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kolumbus.fi Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kolumbus.fi header.i=@kolumbus.fi header.b="GxY5bWKk" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kolumbus.fi; s=elisa1; h=content-transfer-encoding:content-type:mime-version:references:in-reply-to: message-id:date:subject:cc:to:from:from:to:cc:reply-to:subject:date: in-reply-to:references:list-archive:list-subscribe:list-unsubscribe: content-type:content-transfer-encoding:message-id; bh=qj0DzGCRqFg1nIu8AxmR96KboRXll30H+CcV3RMRLr4=; b=GxY5bWKkhAHODqMO+7stLKgpDl4q3scyh4UW1M4ohGT4gCKfKNBlX3utiXcUWNnAVZ6Gtw72EwOMs SwUhnc+WgT5p8NDo1/kGAMrtsXS7++eIBvZhFHMrEq6YksKt7QMEuvvc2QBZsAbjIKK1uiQlrTEtd6 PzxklEGr8URgB7TSx13orZ/xPOXPlA2TGfioZGCX8zwNaQAs1krITGPRkUD3UiL1KJg11fQ+IQ1MnC ZZmEE4AQrmwYFcyyRbuQVbVJg+mQXjdpKzlShuzeyESKWDGJm04/FbwlG4jBVH76XofDXZDEj7RccZ Fp+QP7mFQm47SfFeztHvH7duqS0wPlA== Received: from kaipn1.makisara.private (85-156-116-90.elisa-laajakaista.fi [85.156.116.90]) by fgw23.mail.saunalahti.fi (Halon) with ESMTPSA id 09bdeef1-e7e3-11ef-a27d-005056bdfda7; Mon, 10 Feb 2025 21:12:57 +0200 (EET) From: =?utf-8?q?Kai_M=C3=A4kisara?= To: linux-scsi@vger.kernel.org, dgilbert@interlog.com Cc: martin.petersen@oracle.com, James.Bottomley@HansenPartnership.com, jmeneghi@redhat.com, =?utf-8?q?Kai_M=C3=A4kisara?= Subject: [PATCH v1 5/7] scsi: scsi_debug: Add compression mode page for tapes Date: Mon, 10 Feb 2025 21:12:30 +0200 Message-ID: <20250210191232.185207-6-Kai.Makisara@kolumbus.fi> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250210191232.185207-1-Kai.Makisara@kolumbus.fi> References: <20250210191232.185207-1-Kai.Makisara@kolumbus.fi> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add support for compression mode page. The compression status is saved and returned. No UA is generated. Signed-off-by: Kai Mäkisara --- drivers/scsi/scsi_debug.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 691b573b105b..7b84acebe0fe 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -405,6 +405,7 @@ struct sdebug_dev_info { unsigned int tape_density; unsigned char tape_partition; unsigned char tape_nbr_partitions; + unsigned char tape_dce; unsigned int tape_location[TAPE_MAX_PARTITIONS]; unsigned int tape_eop[TAPE_MAX_PARTITIONS]; struct tape_block *tape_blocks[TAPE_MAX_PARTITIONS]; @@ -2843,6 +2844,20 @@ static int resp_partition_m_pg(unsigned char *p, int pcontrol, int target) return sizeof(partition_pg); } +static int resp_compression_m_pg(unsigned char *p, int pcontrol, int target, + unsigned char dce) +{ /* Compression page for mode_sense (tape) */ + unsigned char compression_pg[] = {0x0f, 14, 0x40, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 00, 00}; + + memcpy(p, compression_pg, sizeof(compression_pg)); + if (dce) + p[2] |= 0x80; + if (pcontrol == 1) + memset(p + 2, 0, sizeof(compression_pg) - 2); + return sizeof(compression_pg); +} + /* PAGE_SIZE is more than necessary but provides room for future expansion. */ #define SDEBUG_MAX_MSENSE_SZ PAGE_SIZE @@ -2983,6 +2998,12 @@ static int resp_mode_sense(struct scsi_cmnd *scp, } offset += len; break; + case 0xf: /* Compression Mode Page (tape) */ + if (!is_tape) + goto bad_pcode; + len += resp_compression_m_pg(ap, pcontrol, target, devip->tape_dce); + offset += len; + break; case 0x11: /* Partition Mode Page (tape) */ if (!is_tape) goto bad_pcode; @@ -3143,6 +3164,14 @@ static int resp_mode_select(struct scsi_cmnd *scp, goto set_mode_changed_ua; } break; + case 0xf: /* Compression mode page */ + if (sdebug_ptype != TYPE_TAPE) + goto bad_pcode; + if ((arr[off + 2] & 0x40) != 0) { + devip->tape_dce = (arr[off + 2] & 0x80) != 0; + return 0; + } + break; case 0x1c: /* Informational Exceptions Mode page */ if (iec_m_pg[1] == arr[off + 1]) { memcpy(iec_m_pg + 2, arr + off + 2, @@ -3158,6 +3187,10 @@ static int resp_mode_select(struct scsi_cmnd *scp, set_mode_changed_ua: set_bit(SDEBUG_UA_MODE_CHANGED, devip->uas_bm); return 0; + +bad_pcode: + mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); + return check_condition_result; } static int resp_temp_l_pg(unsigned char *arr)