From patchwork Fri Jul 31 13:02:07 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 502541 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 91E77140332 for ; Fri, 31 Jul 2015 23:02:24 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751231AbbGaNCX (ORCPT ); Fri, 31 Jul 2015 09:02:23 -0400 Received: from mx2.suse.de ([195.135.220.15]:54266 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751200AbbGaNCV (ORCPT ); Fri, 31 Jul 2015 09:02:21 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id AC682AD9E; Fri, 31 Jul 2015 13:02:17 +0000 (UTC) From: Hannes Reinecke To: Tejun Heo Cc: linux-ide@vger.kernel.org, linux-scsi@vger.kernel.org, James Bottomley , Hannes Reinecke Subject: [PATCH 5/6] libata: support device-managed ZAC devices Date: Fri, 31 Jul 2015 15:02:07 +0200 Message-Id: <1438347728-106434-6-git-send-email-hare@suse.de> X-Mailer: git-send-email 1.8.5.2 In-Reply-To: <1438347728-106434-1-git-send-email-hare@suse.de> References: <1438347728-106434-1-git-send-email-hare@suse.de> Sender: linux-ide-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ide@vger.kernel.org Device-managed ZAC devices just set the zoned capabilities field in INQUIRY byte 69 (cf ACS-4). This corresponds to the 'zoned' field in the block device characteristics VPD page. As this is only defined in SPC-5/SBC-4 we also need to update the supported SCSI version descriptor. Signed-off-by: Hannes Reinecke --- drivers/ata/libata-scsi.c | 19 ++++++++++--------- include/linux/ata.h | 5 +++++ 2 files changed, 15 insertions(+), 9 deletions(-) diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index e0dede3..a5d1e74 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -1987,14 +1987,14 @@ static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf) 0x00, 0xA0, /* SAM-5 (no version claimed) */ - 0x04, - 0xC0, /* SBC-3 (no version claimed) */ + 0x06, + 0x00, /* SBC-4 (no version claimed) */ - 0x04, - 0x60, /* SPC-4 (no version claimed) */ + 0x05, + 0xC0, /* SPC-5 (no version claimed) */ 0x60, - 0x20, /* ZBC (no version claimed) */ + 0x22, /* ZBC r02 */ }; u8 hdr[] = { @@ -2011,10 +2011,8 @@ static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf) if (ata_id_removable(args->id)) hdr[1] |= (1 << 7); - if (args->dev->class == ATA_DEV_ZAC) { + if (args->dev->class == ATA_DEV_ZAC) hdr[0] = TYPE_ZBC; - hdr[2] = 0x6; /* ZBC is defined in SPC-4 */ - } memcpy(rbuf, hdr, sizeof(hdr)); memcpy(&rbuf[8], "ATA ", 8); @@ -2028,7 +2026,7 @@ static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf) if (rbuf[32] == 0 || rbuf[32] == ' ') memcpy(&rbuf[32], "n/a ", 4); - if (args->dev->class == ATA_DEV_ZAC) + if (ata_id_zoned_cap(args->id) || args->dev->class == ATA_DEV_ZAC) memcpy(rbuf + 58, versions_zbc, sizeof(versions_zbc)); else memcpy(rbuf + 58, versions, sizeof(versions)); @@ -2224,12 +2222,15 @@ static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf) { int form_factor = ata_id_form_factor(args->id); int media_rotation_rate = ata_id_rotation_rate(args->id); + u8 zoned = ata_id_zoned_cap(args->id); rbuf[1] = 0xb1; rbuf[3] = 0x3c; rbuf[4] = media_rotation_rate >> 8; rbuf[5] = media_rotation_rate; rbuf[7] = form_factor; + if (zoned) + rbuf[8] = (zoned << 4); return 0; } diff --git a/include/linux/ata.h b/include/linux/ata.h index ef7b14a..2d604ca 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -900,6 +900,11 @@ static inline bool ata_id_is_ssd(const u16 *id) return id[ATA_ID_ROT_SPEED] == 0x01; } +static inline u8 ata_id_zoned_cap(const u16 *id) +{ + return (id[ATA_ID_ADDITIONAL_SUPP] & 0x3); +} + static inline bool ata_id_pio_need_iordy(const u16 *id, const u8 pio) { /* CF spec. r4.1 Table 22 says no IORDY on PIO5 and PIO6. */