From patchwork Tue Jul 29 14:45:14 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 374499 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 44B3F1400B2 for ; Wed, 30 Jul 2014 00:45:28 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753804AbaG2Op0 (ORCPT ); Tue, 29 Jul 2014 10:45:26 -0400 Received: from cantor2.suse.de ([195.135.220.15]:46630 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752719AbaG2OpU (ORCPT ); Tue, 29 Jul 2014 10:45:20 -0400 Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id A0031AD08; Tue, 29 Jul 2014 14:45:18 +0000 (UTC) From: Hannes Reinecke To: Christoph Hellwig Cc: James Bottomley , linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org, Hannes Reinecke , Tejun Heo , Dan Williams Subject: [PATCH 1/4] libata: consolidate ata_dev_classify() Date: Tue, 29 Jul 2014 16:45:14 +0200 Message-Id: <1406645117-53088-2-git-send-email-hare@suse.de> X-Mailer: git-send-email 1.7.12.4 In-Reply-To: <1406645117-53088-1-git-send-email-hare@suse.de> References: <1406645117-53088-1-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 ata_dev_classify() just uses the 'lbah' and 'lbam' fields from the taskfile, so we can as well use those as arguments and rip out the custom code from sas_ata. Cc: Tejun Heo Cc: Dan Williams Signed-off-by: Hannes Reinecke --- drivers/ata/libahci.c | 11 +++---- drivers/ata/libata-core.c | 14 +++++---- drivers/ata/libata-sff.c | 2 +- drivers/ata/sata_fsl.c | 11 +++---- drivers/ata/sata_inic162x.c | 2 +- drivers/ata/sata_sil24.c | 2 +- drivers/scsi/aic94xx/aic94xx_task.c | 10 +++--- drivers/scsi/isci/request.c | 4 +-- drivers/scsi/libsas/sas_ata.c | 63 +++++-------------------------------- drivers/scsi/mvsas/mv_sas.c | 4 +-- drivers/scsi/pm8001/pm8001_hwi.c | 2 +- drivers/scsi/pm8001/pm80xx_hwi.c | 2 +- include/linux/libata.h | 2 +- include/scsi/libsas.h | 11 ++----- 14 files changed, 44 insertions(+), 96 deletions(-) diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c index d72ce04..09f9fcb 100644 --- a/drivers/ata/libahci.c +++ b/drivers/ata/libahci.c @@ -1185,16 +1185,15 @@ static void ahci_dev_config(struct ata_device *dev) unsigned int ahci_dev_classify(struct ata_port *ap) { void __iomem *port_mmio = ahci_port_base(ap); - struct ata_taskfile tf; + u8 lbah, lbam, lbal; u32 tmp; tmp = readl(port_mmio + PORT_SIG); - tf.lbah = (tmp >> 24) & 0xff; - tf.lbam = (tmp >> 16) & 0xff; - tf.lbal = (tmp >> 8) & 0xff; - tf.nsect = (tmp) & 0xff; + lbah = (tmp >> 24) & 0xff; + lbam = (tmp >> 16) & 0xff; + lbal = (tmp >> 8) & 0xff; - return ata_dev_classify(&tf); + return ata_dev_classify(lbah, lbam, lbal); } EXPORT_SYMBOL_GPL(ahci_dev_classify); diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 18d97d5..2c4d742 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -1032,7 +1032,9 @@ const char *sata_spd_string(unsigned int spd) /** * ata_dev_classify - determine device type based on ATA-spec signature - * @tf: ATA taskfile register set for device to be identified + * @lbah: LBA high byte (LBA bits 23:16) + * @lbam: LBA mid byte (LBA bits 15:8) + * @lbal: LBA low byte (LBA bits 7:0) * * Determine from taskfile register contents whether a device is * ATA or ATAPI, as per "Signature and persistence" section @@ -1045,7 +1047,7 @@ const char *sata_spd_string(unsigned int spd) * Device type, %ATA_DEV_ATA, %ATA_DEV_ATAPI, %ATA_DEV_PMP or * %ATA_DEV_UNKNOWN the event of failure. */ -unsigned int ata_dev_classify(const struct ata_taskfile *tf) +unsigned int ata_dev_classify(u8 lbah, u8 lbam, u8 lbal) { /* Apple's open source Darwin code hints that some devices only * put a proper signature into the LBA mid/high registers, @@ -1068,22 +1070,22 @@ unsigned int ata_dev_classify(const struct ata_taskfile *tf) * SEMB signature. This is worked around in * ata_dev_read_id(). */ - if ((tf->lbam == 0) && (tf->lbah == 0)) { + if ((lbam == 0) && (lbah == 0)) { DPRINTK("found ATA device by sig\n"); return ATA_DEV_ATA; } - if ((tf->lbam == 0x14) && (tf->lbah == 0xeb)) { + if ((lbam == 0x14) && (lbah == 0xeb)) { DPRINTK("found ATAPI device by sig\n"); return ATA_DEV_ATAPI; } - if ((tf->lbam == 0x69) && (tf->lbah == 0x96)) { + if ((lbam == 0x69) && (lbah == 0x96)) { DPRINTK("found PMP device by sig\n"); return ATA_DEV_PMP; } - if ((tf->lbam == 0x3c) && (tf->lbah == 0xc3)) { + if ((lbam == 0x3c) && (lbah == 0xc3)) { DPRINTK("found SEMB device by sig (could be ATA device)\n"); return ATA_DEV_SEMB; } diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c index 1121153..ec9b5db 100644 --- a/drivers/ata/libata-sff.c +++ b/drivers/ata/libata-sff.c @@ -1903,7 +1903,7 @@ unsigned int ata_sff_dev_classify(struct ata_device *dev, int present, return ATA_DEV_NONE; /* determine if device is ATA or ATAPI */ - class = ata_dev_classify(&tf); + class = ata_dev_classify(tf.lbah, tf.lbam, tf.lbal); if (class == ATA_DEV_UNKNOWN) { /* If the device failed diagnostic, it's likely to diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c index 616a6d2..2194fa0 100644 --- a/drivers/ata/sata_fsl.c +++ b/drivers/ata/sata_fsl.c @@ -807,8 +807,8 @@ static unsigned int sata_fsl_dev_classify(struct ata_port *ap) { struct sata_fsl_host_priv *host_priv = ap->host->private_data; void __iomem *hcr_base = host_priv->hcr_base; - struct ata_taskfile tf; u32 temp; + u8 lbah, lbam, lbal; temp = ioread32(hcr_base + SIGNATURE); @@ -816,12 +816,11 @@ static unsigned int sata_fsl_dev_classify(struct ata_port *ap) VPRINTK("HStatus = 0x%x\n", ioread32(hcr_base + HSTATUS)); VPRINTK("HControl = 0x%x\n", ioread32(hcr_base + HCONTROL)); - tf.lbah = (temp >> 24) & 0xff; - tf.lbam = (temp >> 16) & 0xff; - tf.lbal = (temp >> 8) & 0xff; - tf.nsect = temp & 0xff; + lbah = (temp >> 24) & 0xff; + lbam = (temp >> 16) & 0xff; + lbal = (temp >> 8) & 0xff; - return ata_dev_classify(&tf); + return ata_dev_classify(lbah, lbam, lbal); } static int sata_fsl_hardreset(struct ata_link *link, unsigned int *class, diff --git a/drivers/ata/sata_inic162x.c b/drivers/ata/sata_inic162x.c index 0698278..7d95cc4 100644 --- a/drivers/ata/sata_inic162x.c +++ b/drivers/ata/sata_inic162x.c @@ -649,7 +649,7 @@ static int inic_hardreset(struct ata_link *link, unsigned int *class, } inic_tf_read(ap, &tf); - *class = ata_dev_classify(&tf); + *class = ata_dev_classify(tf. lbah, tf.lbam, tf.lbal); } return 0; diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c index 0534890..c69ebaf 100644 --- a/drivers/ata/sata_sil24.c +++ b/drivers/ata/sata_sil24.c @@ -686,7 +686,7 @@ static int sil24_softreset(struct ata_link *link, unsigned int *class, } sil24_read_tf(ap, 0, &tf); - *class = ata_dev_classify(&tf); + *class = ata_dev_classify(tf. lbah, tf.lbam, tf.lbal); DPRINTK("EXIT, class=%u\n", *class); return 0; diff --git a/drivers/scsi/aic94xx/aic94xx_task.c b/drivers/scsi/aic94xx/aic94xx_task.c index 59b86e2..7abbe42 100644 --- a/drivers/scsi/aic94xx/aic94xx_task.c +++ b/drivers/scsi/aic94xx/aic94xx_task.c @@ -373,10 +373,10 @@ static int asd_build_ata_ascb(struct asd_ascb *ascb, struct sas_task *task, if (unlikely(task->ata_task.device_control_reg_update)) scb->header.opcode = CONTROL_ATA_DEV; - else if (dev->sata_dev.command_set == ATA_COMMAND_SET) - scb->header.opcode = INITIATE_ATA_TASK; - else + else if (dev->sata_dev.class == ATA_DEV_ATAPI) scb->header.opcode = INITIATE_ATAPI_TASK; + else + scb->header.opcode = INITIATE_ATA_TASK; scb->ata_task.proto_conn_rate = (1 << 5); /* STP */ if (dev->port->oob_mode == SAS_OOB_MODE) @@ -387,7 +387,7 @@ static int asd_build_ata_ascb(struct asd_ascb *ascb, struct sas_task *task, if (likely(!task->ata_task.device_control_reg_update)) scb->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */ scb->ata_task.fis.flags &= 0xF0; /* PM_PORT field shall be 0 */ - if (dev->sata_dev.command_set == ATAPI_COMMAND_SET) + if (dev->sata_dev.class == ATA_DEV_ATAPI) memcpy(scb->ata_task.atapi_packet, task->ata_task.atapi_packet, 16); scb->ata_task.sister_scb = cpu_to_le16(0xFFFF); @@ -399,7 +399,7 @@ static int asd_build_ata_ascb(struct asd_ascb *ascb, struct sas_task *task, if (task->ata_task.dma_xfer) flags |= DATA_XFER_MODE_DMA; if (task->ata_task.use_ncq && - dev->sata_dev.command_set != ATAPI_COMMAND_SET) + dev->sata_dev.class != ATA_DEV_ATAPI) flags |= ATA_Q_TYPE_NCQ; flags |= data_dir_flags[task->data_dir]; scb->ata_task.ata_flags = flags; diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index 56e3809..cfd0084 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -694,7 +694,7 @@ sci_io_request_construct_sata(struct isci_request *ireq, } /* ATAPI */ - if (dev->sata_dev.command_set == ATAPI_COMMAND_SET && + if (dev->sata_dev.class == ATA_DEV_ATAPI && task->ata_task.fis.command == ATA_CMD_PACKET) { sci_atapi_construct(ireq); return SCI_SUCCESS; @@ -2980,7 +2980,7 @@ static void sci_request_started_state_enter(struct sci_base_state_machine *sm) state = SCI_REQ_SMP_WAIT_RESP; } else if (task && sas_protocol_ata(task->task_proto) && !task->ata_task.use_ncq) { - if (dev->sata_dev.command_set == ATAPI_COMMAND_SET && + if (dev->sata_dev.class == ATA_DEV_ATAPI && task->ata_task.fis.command == ATA_CMD_PACKET) { state = SCI_REQ_ATAPI_WAIT_H2D; } else if (task->data_dir == DMA_NONE) { diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c index 766098a..865de86 100644 --- a/drivers/scsi/libsas/sas_ata.c +++ b/drivers/scsi/libsas/sas_ata.c @@ -138,7 +138,7 @@ static void sas_ata_task_done(struct sas_task *task) if (stat->stat == SAS_PROTO_RESPONSE || stat->stat == SAM_STAT_GOOD || ((stat->stat == SAM_STAT_CHECK_CONDITION && - dev->sata_dev.command_set == ATAPI_COMMAND_SET))) { + dev->sata_dev.class == ATA_DEV_ATAPI))) { memcpy(dev->sata_dev.fis, resp->ending_fis, ATA_RESP_FIS_SIZE); if (!link->sactive) { @@ -278,7 +278,7 @@ static struct sas_internal *dev_to_sas_internal(struct domain_device *dev) return to_sas_internal(dev->port->ha->core.shost->transportt); } -static void sas_get_ata_command_set(struct domain_device *dev); +static int sas_get_ata_command_set(struct domain_device *dev); int sas_get_ata_info(struct domain_device *dev, struct ex_phy *phy) { @@ -303,8 +303,7 @@ int sas_get_ata_info(struct domain_device *dev, struct ex_phy *phy) } memcpy(dev->frame_rcvd, &dev->sata_dev.rps_resp.rps.fis, sizeof(struct dev_to_host_fis)); - /* TODO switch to ata_dev_classify() */ - sas_get_ata_command_set(dev); + dev->sata_dev.class = sas_get_ata_command_set(dev); } return 0; } @@ -425,18 +424,7 @@ static int sas_ata_hard_reset(struct ata_link *link, unsigned int *class, if (ret && ret != -EAGAIN) sas_ata_printk(KERN_ERR, dev, "reset failed (errno=%d)\n", ret); - /* XXX: if the class changes during the reset the upper layer - * should be informed, if the device has gone away we assume - * libsas will eventually delete it - */ - switch (dev->sata_dev.command_set) { - case ATA_COMMAND_SET: - *class = ATA_DEV_ATA; - break; - case ATAPI_COMMAND_SET: - *class = ATA_DEV_ATAPI; - break; - } + *class = dev->sata_dev.class; ap->cbl = ATA_CBL_SATA; return ret; @@ -626,50 +614,15 @@ void sas_ata_task_abort(struct sas_task *task) complete(waiting); } -static void sas_get_ata_command_set(struct domain_device *dev) +static int sas_get_ata_command_set(struct domain_device *dev) { struct dev_to_host_fis *fis = (struct dev_to_host_fis *) dev->frame_rcvd; if (dev->dev_type == SAS_SATA_PENDING) - return; + return ATA_DEV_UNKNOWN; - if ((fis->sector_count == 1 && /* ATA */ - fis->lbal == 1 && - fis->lbam == 0 && - fis->lbah == 0 && - fis->device == 0) - || - (fis->sector_count == 0 && /* CE-ATA (mATA) */ - fis->lbal == 0 && - fis->lbam == 0xCE && - fis->lbah == 0xAA && - (fis->device & ~0x10) == 0)) - - dev->sata_dev.command_set = ATA_COMMAND_SET; - - else if ((fis->interrupt_reason == 1 && /* ATAPI */ - fis->lbal == 1 && - fis->byte_count_low == 0x14 && - fis->byte_count_high == 0xEB && - (fis->device & ~0x10) == 0)) - - dev->sata_dev.command_set = ATAPI_COMMAND_SET; - - else if ((fis->sector_count == 1 && /* SEMB */ - fis->lbal == 1 && - fis->lbam == 0x3C && - fis->lbah == 0xC3 && - fis->device == 0) - || - (fis->interrupt_reason == 1 && /* SATA PM */ - fis->lbal == 1 && - fis->byte_count_low == 0x69 && - fis->byte_count_high == 0x96 && - (fis->device & ~0x10) == 0)) - - /* Treat it as a superset? */ - dev->sata_dev.command_set = ATAPI_COMMAND_SET; + return ata_dev_classify(fis->lbah, fis->lbam, fis->lbal); } void sas_probe_sata(struct asd_sas_port *port) @@ -775,7 +728,7 @@ int sas_discover_sata(struct domain_device *dev) if (dev->dev_type == SAS_SATA_PM) return -ENODEV; - sas_get_ata_command_set(dev); + dev->sata_dev.class = sas_get_ata_command_set(dev); sas_fill_in_rphy(dev, dev->rphy); res = sas_notify_lldd_dev_found(dev); diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c index 6c1f223..44625b8 100644 --- a/drivers/scsi/mvsas/mv_sas.c +++ b/drivers/scsi/mvsas/mv_sas.c @@ -479,7 +479,7 @@ static int mvs_task_prep_ata(struct mvs_info *mvi, if (task->ata_task.use_ncq) flags |= MCH_FPDMA; - if (dev->sata_dev.command_set == ATAPI_COMMAND_SET) { + if (dev->sata_dev.class == ATA_DEV_ATAPI) { if (task->ata_task.fis.command != ATA_CMD_ID_ATAPI) flags |= MCH_ATAPI; } @@ -546,7 +546,7 @@ static int mvs_task_prep_ata(struct mvs_info *mvi, task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */ /* fill in command FIS and ATAPI CDB */ memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis)); - if (dev->sata_dev.command_set == ATAPI_COMMAND_SET) + if (dev->sata_dev.class == ATA_DEV_ATAPI) memcpy(buf_cmd + STP_ATAPI_CMD, task->ata_task.atapi_packet, 16); diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c index a97be01..70f9b45 100644 --- a/drivers/scsi/pm8001/pm8001_hwi.c +++ b/drivers/scsi/pm8001/pm8001_hwi.c @@ -4356,7 +4356,7 @@ static int pm8001_chip_sata_req(struct pm8001_hba_info *pm8001_ha, PM8001_IO_DBG(pm8001_ha, pm8001_printk("PIO\n")); } if (task->ata_task.use_ncq && - dev->sata_dev.command_set != ATAPI_COMMAND_SET) { + dev->sata_dev.class != ATA_DEV_ATAPI) { ATAP = 0x07; /* FPDMA */ PM8001_IO_DBG(pm8001_ha, pm8001_printk("FPDMA\n")); } diff --git a/drivers/scsi/pm8001/pm80xx_hwi.c b/drivers/scsi/pm8001/pm80xx_hwi.c index d70587f..b1f47f7 100644 --- a/drivers/scsi/pm8001/pm80xx_hwi.c +++ b/drivers/scsi/pm8001/pm80xx_hwi.c @@ -4059,7 +4059,7 @@ static int pm80xx_chip_sata_req(struct pm8001_hba_info *pm8001_ha, PM8001_IO_DBG(pm8001_ha, pm8001_printk("PIO\n")); } if (task->ata_task.use_ncq && - dev->sata_dev.command_set != ATAPI_COMMAND_SET) { + dev->sata_dev.class != ATA_DEV_ATAPI) { ATAP = 0x07; /* FPDMA */ PM8001_IO_DBG(pm8001_ha, pm8001_printk("FPDMA\n")); } diff --git a/include/linux/libata.h b/include/linux/libata.h index 5ab4e3a..3412aee 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -1172,7 +1172,7 @@ extern int ata_std_qc_defer(struct ata_queued_cmd *qc); extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, unsigned int n_elem); -extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); +extern unsigned int ata_dev_classify(u8 lbah, u8 lbam, u8 lbal); extern void ata_dev_disable(struct ata_device *adev); extern void ata_id_string(const u16 *id, unsigned char *s, unsigned int ofs, unsigned int len); diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h index ef7872c..8528a09 100644 --- a/include/scsi/libsas.h +++ b/include/scsi/libsas.h @@ -161,17 +161,12 @@ struct expander_device { }; /* ---------- SATA device ---------- */ -enum ata_command_set { - ATA_COMMAND_SET = 0, - ATAPI_COMMAND_SET = 1, -}; - #define ATA_RESP_FIS_SIZE 24 struct sata_device { - enum ata_command_set command_set; - struct smp_resp rps_resp; /* report_phy_sata_resp */ - u8 port_no; /* port number, if this is a PM (Port) */ + unsigned int class; + struct smp_resp rps_resp; /* report_phy_sata_resp */ + u8 port_no; /* port number, if this is a PM (Port) */ struct ata_port *ap; struct ata_host ata_host;