Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754593Ab0DFPWz (ORCPT ); Tue, 6 Apr 2010 11:22:55 -0400 Received: from havoc.gtf.org ([69.61.125.42]:39967 "EHLO havoc.gtf.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751665Ab0DFPWt (ORCPT ); Tue, 6 Apr 2010 11:22:49 -0400 Date: Tue, 6 Apr 2010 11:22:48 -0400 From: Jeff Garzik To: Andrew Morton , Linus Torvalds Cc: linux-ide@vger.kernel.org, LKML Subject: [git patches] libata fixes Message-ID: <20100406152248.GA369@havoc.gtf.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.2.2i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6334 Lines: 174 The Host Protected Area (HPA) fix is rather large, but nothing to be done about that except fix it, unfortunately. The other two fixes are one/two-liners. Please pull from 'upstream-linus' branch of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev.git upstream-linus to receive the following updates: drivers/ata/libata-core.c | 77 ++++++++++++++++++++++++++++----------------- drivers/ata/libata-sff.c | 4 -- include/linux/libata.h | 1 + 3 files changed, 49 insertions(+), 33 deletions(-) Tejun Heo (3): libata: don't whine on spurious IRQ libata: disable NCQ on Crucial C300 SSD libata: unlock HPA if device shrunk diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 3f6771e..49cffb6 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -1494,6 +1494,7 @@ static int ata_hpa_resize(struct ata_device *dev) { struct ata_eh_context *ehc = &dev->link->eh_context; int print_info = ehc->i.flags & ATA_EHI_PRINTINFO; + bool unlock_hpa = ata_ignore_hpa || dev->flags & ATA_DFLAG_UNLOCK_HPA; u64 sectors = ata_id_n_sectors(dev->id); u64 native_sectors; int rc; @@ -1510,7 +1511,7 @@ static int ata_hpa_resize(struct ata_device *dev) /* If device aborted the command or HPA isn't going to * be unlocked, skip HPA resizing. */ - if (rc == -EACCES || !ata_ignore_hpa) { + if (rc == -EACCES || !unlock_hpa) { ata_dev_printk(dev, KERN_WARNING, "HPA support seems " "broken, skipping HPA handling\n"); dev->horkage |= ATA_HORKAGE_BROKEN_HPA; @@ -1525,7 +1526,7 @@ static int ata_hpa_resize(struct ata_device *dev) dev->n_native_sectors = native_sectors; /* nothing to do? */ - if (native_sectors <= sectors || !ata_ignore_hpa) { + if (native_sectors <= sectors || !unlock_hpa) { if (!print_info || native_sectors == sectors) return 0; @@ -4186,36 +4187,51 @@ int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class, goto fail; /* verify n_sectors hasn't changed */ - if (dev->class == ATA_DEV_ATA && n_sectors && - dev->n_sectors != n_sectors) { - ata_dev_printk(dev, KERN_WARNING, "n_sectors mismatch " - "%llu != %llu\n", - (unsigned long long)n_sectors, - (unsigned long long)dev->n_sectors); - /* - * Something could have caused HPA to be unlocked - * involuntarily. If n_native_sectors hasn't changed - * and the new size matches it, keep the device. - */ - if (dev->n_native_sectors == n_native_sectors && - dev->n_sectors > n_sectors && - dev->n_sectors == n_native_sectors) { - ata_dev_printk(dev, KERN_WARNING, - "new n_sectors matches native, probably " - "late HPA unlock, continuing\n"); - /* keep using the old n_sectors */ - dev->n_sectors = n_sectors; - } else { - /* restore original n_[native]_sectors and fail */ - dev->n_native_sectors = n_native_sectors; - dev->n_sectors = n_sectors; - rc = -ENODEV; - goto fail; - } + if (dev->class != ATA_DEV_ATA || !n_sectors || + dev->n_sectors == n_sectors) + return 0; + + /* n_sectors has changed */ + ata_dev_printk(dev, KERN_WARNING, "n_sectors mismatch %llu != %llu\n", + (unsigned long long)n_sectors, + (unsigned long long)dev->n_sectors); + + /* + * Something could have caused HPA to be unlocked + * involuntarily. If n_native_sectors hasn't changed and the + * new size matches it, keep the device. + */ + if (dev->n_native_sectors == n_native_sectors && + dev->n_sectors > n_sectors && dev->n_sectors == n_native_sectors) { + ata_dev_printk(dev, KERN_WARNING, + "new n_sectors matches native, probably " + "late HPA unlock, continuing\n"); + /* keep using the old n_sectors */ + dev->n_sectors = n_sectors; + return 0; } - return 0; + /* + * Some BIOSes boot w/o HPA but resume w/ HPA locked. Try + * unlocking HPA in those cases. + * + * https://bugzilla.kernel.org/show_bug.cgi?id=15396 + */ + if (dev->n_native_sectors == n_native_sectors && + dev->n_sectors < n_sectors && n_sectors == n_native_sectors && + !(dev->horkage & ATA_HORKAGE_BROKEN_HPA)) { + ata_dev_printk(dev, KERN_WARNING, + "old n_sectors matches native, probably " + "late HPA lock, will try to unlock HPA\n"); + /* try unlocking HPA */ + dev->flags |= ATA_DFLAG_UNLOCK_HPA; + rc = -EIO; + } else + rc = -ENODEV; + /* restore original n_[native_]sectors and fail */ + dev->n_native_sectors = n_native_sectors; + dev->n_sectors = n_sectors; fail: ata_dev_printk(dev, KERN_ERR, "revalidation failed (errno=%d)\n", rc); return rc; @@ -4354,6 +4370,9 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = { { "HTS541080G9SA00", "MB4OC60D", ATA_HORKAGE_NONCQ, }, { "HTS541010G9SA00", "MBZOC60D", ATA_HORKAGE_NONCQ, }, + /* https://bugzilla.kernel.org/show_bug.cgi?id=15573 */ + { "C300-CTFDDAC128MAG", "0001", ATA_HORKAGE_NONCQ, }, + /* devices which puke on READ_NATIVE_MAX */ { "HDS724040KLSA80", "KFAOA20N", ATA_HORKAGE_BROKEN_HPA, }, { "WDC WD3200JD-00KLB0", "WD-WCAMR1130137", ATA_HORKAGE_BROKEN_HPA }, diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c index 6411e0c..e3877b6 100644 --- a/drivers/ata/libata-sff.c +++ b/drivers/ata/libata-sff.c @@ -1816,10 +1816,6 @@ retry: !ap->ops->sff_irq_check(ap)) continue; - if (printk_ratelimit()) - ata_port_printk(ap, KERN_INFO, - "clearing spurious IRQ\n"); - if (idle & (1 << i)) { ap->ops->sff_check_status(ap); ap->ops->sff_irq_clear(ap); diff --git a/include/linux/libata.h b/include/linux/libata.h index f8ea71e..b2f2003 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -146,6 +146,7 @@ enum { ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */ ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */ ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */ + ATA_DFLAG_UNLOCK_HPA = (1 << 18), /* unlock HPA */ ATA_DFLAG_INIT_MASK = (1 << 24) - 1, ATA_DFLAG_DETACH = (1 << 24), -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/