From ca6d43b051b5a061b33c43303b6b4c93b46a34b5 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Thu, 21 Jun 2012 23:41:41 -0700 Subject: [SCSI] libata: reset once Hotplug testing with libsas currently encounters a 55 second wait for link recovery to give up. In the case where the user trusts the response time of their devices permit the recovery attempts to be limited to one. Signed-off-by: Dan Williams Acked-by: Jeff Garzik Acked-by: Tejun Heo Signed-off-by: James Bottomley --- include/linux/libata.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux/libata.h') diff --git a/include/linux/libata.h b/include/linux/libata.h index 64f90e17e51d..31a2853e9530 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -184,6 +184,7 @@ enum { ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */ ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */ + ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */ /* struct ata_port flags */ ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ -- cgit v1.2.3 From 2fcbdcb4c802fe40d6827dbc365dac90cfe8c0a3 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Thu, 21 Jun 2012 23:41:46 -0700 Subject: [SCSI] libata: export ata_port suspend/resume infrastructure for sas Reuse ata_port_{suspend|resume}_common for sas. This path is chosen over adding coordination between ata-tranport and sas-transport because libsas wants to revalidate the domain at resume-time at the host level. It can not validate links have resumed properly until libata has had a chance to perform its revalidation, and any sane placing of an ata_port in the sas-transport model would delay it's resumption until after the host. Export the common portion of port suspend/resume (bypass pm_runtime), and allow sas to perform these operations asynchronously (similar to the libsas async-ata probe implmentation). Async operation is determined by having an external, rather than stack based, location for storing the result of the operation. Signed-off-by: Dan Williams Reviewed-by: Jacek Danecki Acked-by: Jeff Garzik Signed-off-by: James Bottomley --- drivers/ata/libata-core.c | 58 +++++++++++++++++++++++++++++++++++++---------- include/linux/libata.h | 11 +++++++++ 2 files changed, 57 insertions(+), 12 deletions(-) (limited to 'include/linux/libata.h') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 70964aabcb89..09657c372d3b 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -5252,16 +5252,20 @@ bool ata_link_offline(struct ata_link *link) #ifdef CONFIG_PM static int ata_port_request_pm(struct ata_port *ap, pm_message_t mesg, unsigned int action, unsigned int ehi_flags, - int wait) + int *async) { struct ata_link *link; unsigned long flags; - int rc; + int rc = 0; /* Previous resume operation might still be in * progress. Wait for PM_PENDING to clear. */ if (ap->pflags & ATA_PFLAG_PM_PENDING) { + if (async) { + *async = -EAGAIN; + return 0; + } ata_port_wait_eh(ap); WARN_ON(ap->pflags & ATA_PFLAG_PM_PENDING); } @@ -5270,10 +5274,10 @@ static int ata_port_request_pm(struct ata_port *ap, pm_message_t mesg, spin_lock_irqsave(ap->lock, flags); ap->pm_mesg = mesg; - if (wait) { - rc = 0; + if (async) + ap->pm_result = async; + else ap->pm_result = &rc; - } ap->pflags |= ATA_PFLAG_PM_PENDING; ata_for_each_link(link, ap, HOST_FIRST) { @@ -5286,7 +5290,7 @@ static int ata_port_request_pm(struct ata_port *ap, pm_message_t mesg, spin_unlock_irqrestore(ap->lock, flags); /* wait and check result */ - if (wait) { + if (!async) { ata_port_wait_eh(ap); WARN_ON(ap->pflags & ATA_PFLAG_PM_PENDING); } @@ -5294,9 +5298,8 @@ static int ata_port_request_pm(struct ata_port *ap, pm_message_t mesg, return rc; } -static int ata_port_suspend_common(struct device *dev, pm_message_t mesg) +static int __ata_port_suspend_common(struct ata_port *ap, pm_message_t mesg, int *async) { - struct ata_port *ap = to_ata_port(dev); unsigned int ehi_flags = ATA_EHI_QUIET; int rc; @@ -5311,10 +5314,17 @@ static int ata_port_suspend_common(struct device *dev, pm_message_t mesg) if (mesg.event == PM_EVENT_SUSPEND) ehi_flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_NO_RECOVERY; - rc = ata_port_request_pm(ap, mesg, 0, ehi_flags, 1); + rc = ata_port_request_pm(ap, mesg, 0, ehi_flags, async); return rc; } +static int ata_port_suspend_common(struct device *dev, pm_message_t mesg) +{ + struct ata_port *ap = to_ata_port(dev); + + return __ata_port_suspend_common(ap, mesg, NULL); +} + static int ata_port_suspend(struct device *dev) { if (pm_runtime_suspended(dev)) @@ -5339,16 +5349,22 @@ static int ata_port_poweroff(struct device *dev) return ata_port_suspend_common(dev, PMSG_HIBERNATE); } -static int ata_port_resume_common(struct device *dev) +static int __ata_port_resume_common(struct ata_port *ap, int *async) { - struct ata_port *ap = to_ata_port(dev); int rc; rc = ata_port_request_pm(ap, PMSG_ON, ATA_EH_RESET, - ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, 1); + ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, async); return rc; } +static int ata_port_resume_common(struct device *dev) +{ + struct ata_port *ap = to_ata_port(dev); + + return __ata_port_resume_common(ap, NULL); +} + static int ata_port_resume(struct device *dev) { int rc; @@ -5381,6 +5397,24 @@ static const struct dev_pm_ops ata_port_pm_ops = { .runtime_idle = ata_port_runtime_idle, }; +/* sas ports don't participate in pm runtime management of ata_ports, + * and need to resume ata devices at the domain level, not the per-port + * level. sas suspend/resume is async to allow parallel port recovery + * since sas has multiple ata_port instances per Scsi_Host. + */ +int ata_sas_port_async_suspend(struct ata_port *ap, int *async) +{ + return __ata_port_suspend_common(ap, PMSG_SUSPEND, async); +} +EXPORT_SYMBOL_GPL(ata_sas_port_async_suspend); + +int ata_sas_port_async_resume(struct ata_port *ap, int *async) +{ + return __ata_port_resume_common(ap, async); +} +EXPORT_SYMBOL_GPL(ata_sas_port_async_resume); + + /** * ata_host_suspend - suspend host * @host: host to suspend diff --git a/include/linux/libata.h b/include/linux/libata.h index 31a2853e9530..cc834e1136b2 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -1013,6 +1013,17 @@ extern bool ata_link_offline(struct ata_link *link); #ifdef CONFIG_PM extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg); extern void ata_host_resume(struct ata_host *host); +extern int ata_sas_port_async_suspend(struct ata_port *ap, int *async); +extern int ata_sas_port_async_resume(struct ata_port *ap, int *async); +#else +static inline int ata_sas_port_async_suspend(struct ata_port *ap, int *async) +{ + return 0; +} +static inline int ata_sas_port_async_resume(struct ata_port *ap, int *async) +{ + return 0; +} #endif extern int ata_ratelimit(void); extern void ata_msleep(struct ata_port *ap, unsigned int msecs); -- cgit v1.2.3 From 8d8e7d13146eb6be8b98dbd58ac30421a4f8edf3 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Mon, 9 Jul 2012 21:06:08 -0700 Subject: [SCSI] libsas, ipr: cleanup ata_host flags initialization via ata_host_init libsas and ipr pass flags to ata_host_init that are meant for the port. ata_host flags: ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ ATA_HOST_STARTED = (1 << 1), /* Host started */ ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */ ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */ flags passed by libsas: ATA_FLAG_SATA = (1 << 1), ATA_FLAG_PIO_DMA = (1 << 7), /* PIO cmds via DMA */ ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ The only one that aliases is ATA_HOST_STARTED which is a 'don't care' in the libsas and ipr cases since ata_hosts from these sources are not registered with libata. Reported-by: Hannes Reinecke Signed-off-by: Dan Williams Acked-by: Brian King Acked-by: Jeff Garzik Signed-off-by: James Bottomley --- drivers/ata/libata-core.c | 10 ++-------- drivers/scsi/ipr.c | 3 +-- drivers/scsi/libsas/sas_ata.c | 5 +---- include/linux/libata.h | 3 +-- 4 files changed, 5 insertions(+), 16 deletions(-) (limited to 'include/linux/libata.h') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 09657c372d3b..2d479b67d0b4 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -5960,24 +5960,18 @@ int ata_host_start(struct ata_host *host) } /** - * ata_sas_host_init - Initialize a host struct + * ata_sas_host_init - Initialize a host struct for sas (ipr, libsas) * @host: host to initialize * @dev: device host is attached to - * @flags: host flags * @ops: port_ops * - * LOCKING: - * PCI/etc. bus probe sem. - * */ -/* KILLME - the only user left is ipr */ void ata_host_init(struct ata_host *host, struct device *dev, - unsigned long flags, struct ata_port_operations *ops) + struct ata_port_operations *ops) { spin_lock_init(&host->lock); mutex_init(&host->eh_mutex); host->dev = dev; - host->flags = flags; host->ops = ops; } diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index 467dc38246f9..dacc784ad2d6 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -8775,8 +8775,7 @@ static int __devinit ipr_probe_ioa(struct pci_dev *pdev, ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata; memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg)); - ata_host_init(&ioa_cfg->ata_host, &pdev->dev, - sata_port_info.flags, &ipr_sata_ops); + ata_host_init(&ioa_cfg->ata_host, &pdev->dev, &ipr_sata_ops); ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id); diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c index 905ae45133fc..bdb81cda8401 100644 --- a/drivers/scsi/libsas/sas_ata.c +++ b/drivers/scsi/libsas/sas_ata.c @@ -580,10 +580,7 @@ int sas_ata_init(struct domain_device *found_dev) struct ata_port *ap; int rc; - ata_host_init(&found_dev->sata_dev.ata_host, - ha->dev, - sata_port_info.flags, - &sas_sata_ops); + ata_host_init(&found_dev->sata_dev.ata_host, ha->dev, &sas_sata_ops); ap = ata_sas_port_alloc(&found_dev->sata_dev.ata_host, &sata_port_info, shost); diff --git a/include/linux/libata.h b/include/linux/libata.h index cc834e1136b2..a22707186421 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -987,8 +987,7 @@ extern int ata_host_activate(struct ata_host *host, int irq, irq_handler_t irq_handler, unsigned long irq_flags, struct scsi_host_template *sht); extern void ata_host_detach(struct ata_host *host); -extern void ata_host_init(struct ata_host *, struct device *, - unsigned long, struct ata_port_operations *); +extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *); extern int ata_scsi_detect(struct scsi_host_template *sht); extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd); -- cgit v1.2.3 From 65fe1f0f66a57380229a4ced844188103135f37b Mon Sep 17 00:00:00 2001 From: Shane Huang Date: Fri, 7 Sep 2012 22:40:01 +0800 Subject: ahci: implement aggressive SATA device sleep support Device Sleep is a feature as described in AHCI 1.3.1 Technical Proposal. This feature enables an HBA and SATA storage device to enter the DevSleep interface state, enabling lower power SATA-based systems. Aggressive Device Sleep enables the HBA to assert the DEVSLP signal as soon as there are no commands outstanding to the device and the port specific Device Sleep idle timer has expired. This enables autonomous entry into the DevSleep interface state without waiting for software in power sensitive systems. This patch enables Aggressive Device Sleep only if both host controller and device support it. Tested on AMD reference board together with Device Sleep supported device sample. Signed-off-by: Shane Huang Reviewed-by: Aaron Lu Signed-off-by: Jeff Garzik --- drivers/ata/ahci.h | 14 +++++++ drivers/ata/libahci.c | 97 ++++++++++++++++++++++++++++++++++++++++++++++- drivers/ata/libata-core.c | 29 +++++++++++--- drivers/ata/libata-eh.c | 12 +++--- drivers/ata/libata.h | 2 + include/linux/ata.h | 9 +++++ include/linux/libata.h | 4 ++ 7 files changed, 156 insertions(+), 11 deletions(-) (limited to 'include/linux/libata.h') diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h index 57eb1c212a4c..6441cbecfa1d 100644 --- a/drivers/ata/ahci.h +++ b/drivers/ata/ahci.h @@ -115,6 +115,9 @@ enum { HOST_CAP2_BOH = (1 << 0), /* BIOS/OS handoff supported */ HOST_CAP2_NVMHCI = (1 << 1), /* NVMHCI supported */ HOST_CAP2_APST = (1 << 2), /* Automatic partial to slumber */ + HOST_CAP2_SDS = (1 << 3), /* Support device sleep */ + HOST_CAP2_SADM = (1 << 4), /* Support aggressive DevSlp */ + HOST_CAP2_DESO = (1 << 5), /* DevSlp from slumber only */ /* registers for each SATA port */ PORT_LST_ADDR = 0x00, /* command list DMA addr */ @@ -133,6 +136,7 @@ enum { PORT_SCR_ACT = 0x34, /* SATA phy register: SActive */ PORT_SCR_NTF = 0x3c, /* SATA phy register: SNotification */ PORT_FBS = 0x40, /* FIS-based Switching */ + PORT_DEVSLP = 0x44, /* device sleep */ /* PORT_IRQ_{STAT,MASK} bits */ PORT_IRQ_COLD_PRES = (1 << 31), /* cold presence detect */ @@ -186,6 +190,7 @@ enum { PORT_CMD_ICC_PARTIAL = (0x2 << 28), /* Put i/f in partial state */ PORT_CMD_ICC_SLUMBER = (0x6 << 28), /* Put i/f in slumber state */ + /* PORT_FBS bits */ PORT_FBS_DWE_OFFSET = 16, /* FBS device with error offset */ PORT_FBS_ADO_OFFSET = 12, /* FBS active dev optimization offset */ PORT_FBS_DEV_OFFSET = 8, /* FBS device to issue offset */ @@ -194,6 +199,15 @@ enum { PORT_FBS_DEC = (1 << 1), /* FBS device error clear */ PORT_FBS_EN = (1 << 0), /* Enable FBS */ + /* PORT_DEVSLP bits */ + PORT_DEVSLP_DM_OFFSET = 25, /* DITO multiplier offset */ + PORT_DEVSLP_DM_MASK = (0xf << 25), /* DITO multiplier mask */ + PORT_DEVSLP_DITO_OFFSET = 15, /* DITO offset */ + PORT_DEVSLP_MDAT_OFFSET = 10, /* Minimum assertion time */ + PORT_DEVSLP_DETO_OFFSET = 2, /* DevSlp exit timeout */ + PORT_DEVSLP_DSP = (1 << 1), /* DevSlp present */ + PORT_DEVSLP_ADSE = (1 << 0), /* Aggressive DevSlp enable */ + /* hpriv->flags bits */ #define AHCI_HFLAGS(flags) .private_data = (void *)(flags) diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c index 555c07afa05b..4201e535a8c8 100644 --- a/drivers/ata/libahci.c +++ b/drivers/ata/libahci.c @@ -45,6 +45,7 @@ #include #include #include "ahci.h" +#include "libata.h" static int ahci_skip_host_reset; int ahci_ignore_sss; @@ -76,6 +77,7 @@ static void ahci_qc_prep(struct ata_queued_cmd *qc); static int ahci_pmp_qc_defer(struct ata_queued_cmd *qc); static void ahci_freeze(struct ata_port *ap); static void ahci_thaw(struct ata_port *ap); +static void ahci_set_aggressive_devslp(struct ata_port *ap, bool sleep); static void ahci_enable_fbs(struct ata_port *ap); static void ahci_disable_fbs(struct ata_port *ap); static void ahci_pmp_attach(struct ata_port *ap); @@ -193,6 +195,10 @@ module_param(ahci_em_messages, int, 0444); MODULE_PARM_DESC(ahci_em_messages, "AHCI Enclosure Management Message control (0 = off, 1 = on)"); +int devslp_idle_timeout = 1000; /* device sleep idle timeout in ms */ +module_param(devslp_idle_timeout, int, 0644); +MODULE_PARM_DESC(devslp_idle_timeout, "device sleep idle timeout"); + static void ahci_enable_ahci(void __iomem *mmio) { int i; @@ -702,6 +708,16 @@ static int ahci_set_lpm(struct ata_link *link, enum ata_lpm_policy policy, } } + /* set aggressive device sleep */ + if ((hpriv->cap2 & HOST_CAP2_SDS) && + (hpriv->cap2 & HOST_CAP2_SADM) && + (link->device->flags & ATA_DFLAG_DEVSLP)) { + if (policy == ATA_LPM_MIN_POWER) + ahci_set_aggressive_devslp(ap, true); + else + ahci_set_aggressive_devslp(ap, false); + } + if (policy == ATA_LPM_MAX_POWER) { sata_link_scr_lpm(link, policy, false); @@ -1890,6 +1906,81 @@ static void ahci_post_internal_cmd(struct ata_queued_cmd *qc) ahci_kick_engine(ap); } +static void ahci_set_aggressive_devslp(struct ata_port *ap, bool sleep) +{ + void __iomem *port_mmio = ahci_port_base(ap); + struct ata_device *dev = ap->link.device; + u32 devslp, dm, dito, mdat, deto; + int rc; + unsigned int err_mask; + + devslp = readl(port_mmio + PORT_DEVSLP); + if (!(devslp & PORT_DEVSLP_DSP)) { + dev_err(ap->host->dev, "port does not support device sleep\n"); + return; + } + + /* disable device sleep */ + if (!sleep) { + if (devslp & PORT_DEVSLP_ADSE) { + writel(devslp & ~PORT_DEVSLP_ADSE, + port_mmio + PORT_DEVSLP); + err_mask = ata_dev_set_feature(dev, + SETFEATURES_SATA_DISABLE, + SATA_DEVSLP); + if (err_mask && err_mask != AC_ERR_DEV) + ata_dev_warn(dev, "failed to disable DEVSLP\n"); + } + return; + } + + /* device sleep was already enabled */ + if (devslp & PORT_DEVSLP_ADSE) + return; + + /* set DITO, MDAT, DETO and enable DevSlp, need to stop engine first */ + rc = ahci_stop_engine(ap); + if (rc) + return; + + dm = (devslp & PORT_DEVSLP_DM_MASK) >> PORT_DEVSLP_DM_OFFSET; + dito = devslp_idle_timeout / (dm + 1); + if (dito > 0x3ff) + dito = 0x3ff; + + /* Use the nominal value 10 ms if the read MDAT is zero, + * the nominal value of DETO is 20 ms. + */ + if (dev->sata_settings[ATA_LOG_DEVSLP_VALID] & + ATA_LOG_DEVSLP_VALID_MASK) { + mdat = dev->sata_settings[ATA_LOG_DEVSLP_MDAT] & + ATA_LOG_DEVSLP_MDAT_MASK; + if (!mdat) + mdat = 10; + deto = dev->sata_settings[ATA_LOG_DEVSLP_DETO]; + if (!deto) + deto = 20; + } else { + mdat = 10; + deto = 20; + } + + devslp |= ((dito << PORT_DEVSLP_DITO_OFFSET) | + (mdat << PORT_DEVSLP_MDAT_OFFSET) | + (deto << PORT_DEVSLP_DETO_OFFSET) | + PORT_DEVSLP_ADSE); + writel(devslp, port_mmio + PORT_DEVSLP); + + ahci_start_engine(ap); + + /* enable device sleep feature for the drive */ + err_mask = ata_dev_set_feature(dev, + SETFEATURES_SATA_ENABLE, + SATA_DEVSLP); + if (err_mask && err_mask != AC_ERR_DEV) + ata_dev_warn(dev, "failed to enable DEVSLP\n"); +} + static void ahci_enable_fbs(struct ata_port *ap) { struct ahci_port_priv *pp = ap->private_data; @@ -2164,7 +2255,8 @@ void ahci_print_info(struct ata_host *host, const char *scc_s) "flags: " "%s%s%s%s%s%s%s" "%s%s%s%s%s%s%s" - "%s%s%s%s%s%s\n" + "%s%s%s%s%s%s%s" + "%s%s\n" , cap & HOST_CAP_64 ? "64bit " : "", @@ -2184,6 +2276,9 @@ void ahci_print_info(struct ata_host *host, const char *scc_s) cap & HOST_CAP_CCC ? "ccc " : "", cap & HOST_CAP_EMS ? "ems " : "", cap & HOST_CAP_SXS ? "sxs " : "", + cap2 & HOST_CAP2_DESO ? "deso " : "", + cap2 & HOST_CAP2_SADM ? "sadm " : "", + cap2 & HOST_CAP2_SDS ? "sds " : "", cap2 & HOST_CAP2_APST ? "apst " : "", cap2 & HOST_CAP2_NVMHCI ? "nvmp " : "", cap2 & HOST_CAP2_BOH ? "boh " : "" diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 5eee1c1537d2..25daf39368f6 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -2155,6 +2155,7 @@ int ata_dev_configure(struct ata_device *dev) int print_info = ehc->i.flags & ATA_EHI_PRINTINFO; const u16 *id = dev->id; unsigned long xfer_mask; + unsigned int err_mask; char revbuf[7]; /* XYZ-99\0 */ char fwrevbuf[ATA_ID_FW_REV_LEN+1]; char modelbuf[ATA_ID_PROD_LEN+1]; @@ -2323,6 +2324,26 @@ int ata_dev_configure(struct ata_device *dev) } } + /* check and mark DevSlp capability */ + if (ata_id_has_devslp(dev->id)) + dev->flags |= ATA_DFLAG_DEVSLP; + + /* Obtain SATA Settings page from Identify Device Data Log, + * which contains DevSlp timing variables etc. + * Exclude old devices with ata_id_has_ncq() + */ + if (ata_id_has_ncq(dev->id)) { + err_mask = ata_read_log_page(dev, + ATA_LOG_SATA_ID_DEV_DATA, + ATA_LOG_SATA_SETTINGS, + dev->sata_settings, + 1); + if (err_mask) + ata_dev_dbg(dev, + "failed to get Identify Device Data, Emask 0x%x\n", + err_mask); + } + dev->cdb_len = 16; } @@ -2351,8 +2372,6 @@ int ata_dev_configure(struct ata_device *dev) (ap->flags & ATA_FLAG_AN) && ata_id_has_atapi_AN(id) && (!sata_pmp_attached(ap) || sata_scr_read(&ap->link, SCR_NOTIFICATION, &sntf) == 0)) { - unsigned int err_mask; - /* issue SET feature command to turn this on */ err_mask = ata_dev_set_feature(dev, SETFEATURES_SATA_ENABLE, SATA_AN); @@ -3598,7 +3617,7 @@ int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, switch (policy) { case ATA_LPM_MAX_POWER: /* disable all LPM transitions */ - scontrol |= (0x3 << 8); + scontrol |= (0x7 << 8); /* initiate transition to active state */ if (spm_wakeup) { scontrol |= (0x4 << 12); @@ -3608,12 +3627,12 @@ int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, case ATA_LPM_MED_POWER: /* allow LPM to PARTIAL */ scontrol &= ~(0x1 << 8); - scontrol |= (0x2 << 8); + scontrol |= (0x6 << 8); break; case ATA_LPM_MIN_POWER: if (ata_link_nr_enabled(link) > 0) /* no restrictions on LPM transitions */ - scontrol &= ~(0x3 << 8); + scontrol &= ~(0x7 << 8); else { /* empty port, power off */ scontrol &= ~0xf; diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index 7d4535e989bf..26598941e1b3 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -1487,6 +1487,7 @@ static const char *ata_err_string(unsigned int err_mask) /** * ata_read_log_page - read a specific log page * @dev: target device + * @log: log to read * @page: page to read * @buf: buffer to store read page * @sectors: number of sectors to read @@ -1499,17 +1500,18 @@ static const char *ata_err_string(unsigned int err_mask) * RETURNS: * 0 on success, AC_ERR_* mask otherwise. */ -static unsigned int ata_read_log_page(struct ata_device *dev, - u8 page, void *buf, unsigned int sectors) +unsigned int ata_read_log_page(struct ata_device *dev, u8 log, + u8 page, void *buf, unsigned int sectors) { struct ata_taskfile tf; unsigned int err_mask; - DPRINTK("read log page - page %d\n", page); + DPRINTK("read log page - log 0x%x, page 0x%x\n", log, page); ata_tf_init(dev, &tf); tf.command = ATA_CMD_READ_LOG_EXT; - tf.lbal = page; + tf.lbal = log; + tf.lbam = page; tf.nsect = sectors; tf.hob_nsect = sectors >> 8; tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_LBA48 | ATA_TFLAG_DEVICE; @@ -1545,7 +1547,7 @@ static int ata_eh_read_log_10h(struct ata_device *dev, u8 csum; int i; - err_mask = ata_read_log_page(dev, ATA_LOG_SATA_NCQ, buf, 1); + err_mask = ata_read_log_page(dev, ATA_LOG_SATA_NCQ, 0, buf, 1); if (err_mask) return -EIO; diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h index 50e4dff0604e..7148a58020b9 100644 --- a/drivers/ata/libata.h +++ b/drivers/ata/libata.h @@ -165,6 +165,8 @@ extern void ata_eh_about_to_do(struct ata_link *link, struct ata_device *dev, unsigned int action); extern void ata_eh_done(struct ata_link *link, struct ata_device *dev, unsigned int action); +extern unsigned int ata_read_log_page(struct ata_device *dev, u8 log, + u8 page, void *buf, unsigned int sectors); extern void ata_eh_autopsy(struct ata_port *ap); const char *ata_get_cmd_descript(u8 command); extern void ata_eh_report(struct ata_port *ap); diff --git a/include/linux/ata.h b/include/linux/ata.h index 47a9dbf02159..408da9502177 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -295,6 +295,13 @@ enum { /* READ_LOG_EXT pages */ ATA_LOG_SATA_NCQ = 0x10, + ATA_LOG_SATA_ID_DEV_DATA = 0x30, + ATA_LOG_SATA_SETTINGS = 0x08, + ATA_LOG_DEVSLP_MDAT = 0x30, + ATA_LOG_DEVSLP_MDAT_MASK = 0x1F, + ATA_LOG_DEVSLP_DETO = 0x31, + ATA_LOG_DEVSLP_VALID = 0x37, + ATA_LOG_DEVSLP_VALID_MASK = 0x80, /* READ/WRITE LONG (obsolete) */ ATA_CMD_READ_LONG = 0x22, @@ -348,6 +355,7 @@ enum { SATA_FPDMA_IN_ORDER = 0x04, /* FPDMA in-order data delivery */ SATA_AN = 0x05, /* Asynchronous Notification */ SATA_SSP = 0x06, /* Software Settings Preservation */ + SATA_DEVSLP = 0x09, /* Device Sleep */ /* feature values for SET_MAX */ ATA_SET_MAX_ADDR = 0x00, @@ -584,6 +592,7 @@ static inline int ata_is_data(u8 prot) #define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20) #define ata_id_has_da(id) ((id)[ATA_ID_SATA_CAPABILITY_2] & (1 << 4)) +#define ata_id_has_devslp(id) ((id)[ATA_ID_FEATURE_SUPP] & (1 << 8)) static inline bool ata_id_has_hipm(const u16 *id) { diff --git a/include/linux/libata.h b/include/linux/libata.h index 64f90e17e51d..464e67c2e77a 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -162,6 +162,7 @@ enum { ATA_DFLAG_DETACHED = (1 << 25), ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */ + ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */ ATA_DEV_UNKNOWN = 0, /* unknown device */ ATA_DEV_ATA = 1, /* ATA device */ @@ -649,6 +650,9 @@ struct ata_device { u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ }; + /* Identify Device Data Log (30h), SATA Settings (page 08h) */ + u8 sata_settings[ATA_SECT_SIZE]; + /* error history */ int spdn_cnt; /* ering is CLEAR_END, read comment above CLEAR_END */ -- cgit v1.2.3