forked from luck/tmp_suning_uos_patched
sata_mv: improve warnings about Highpoint RocketRAID 23xx cards
Improve the existing boot/load time warnings from sata_mv for Highpoint RocketRAID 23xx cards, based on new knowledge about where the BIOS likes to overwrite sectors with metadata. Harmless to us, but very useful for end users. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
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@ -2506,11 +2506,31 @@ static int mv_chip_id(struct ata_host *host, unsigned int board_idx)
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if (pdev->vendor == PCI_VENDOR_ID_TTI &&
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(pdev->device == 0x2300 || pdev->device == 0x2310))
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{
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printk(KERN_WARNING "sata_mv: Highpoint RocketRAID BIOS"
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" will CORRUPT DATA on attached drives when"
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" configured as \"Legacy\". BEWARE!\n");
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printk(KERN_WARNING "sata_mv: Use BIOS \"JBOD\" volumes"
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" instead for safety.\n");
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/*
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* Highpoint RocketRAID PCIe 23xx series cards:
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*
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* Unconfigured drives are treated as "Legacy"
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* by the BIOS, and it overwrites sector 8 with
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* a "Lgcy" metadata block prior to Linux boot.
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*
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* Configured drives (RAID or JBOD) leave sector 8
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* alone, but instead overwrite a high numbered
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* sector for the RAID metadata. This sector can
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* be determined exactly, by truncating the physical
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* drive capacity to a nice even GB value.
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*
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* RAID metadata is at: (dev->n_sectors & ~0xfffff)
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*
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* Warn the user, lest they think we're just buggy.
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*/
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printk(KERN_WARNING DRV_NAME ": Highpoint RocketRAID"
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" BIOS CORRUPTS DATA on all attached drives,"
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" regardless of if/how they are configured."
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" BEWARE!\n");
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printk(KERN_WARNING DRV_NAME ": For data safety, do not"
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" use sectors 8-9 on \"Legacy\" drives,"
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" and avoid the final two gigabytes on"
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" all RocketRAID BIOS initialized drives.\n");
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}
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case chip_6042:
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hpriv->ops = &mv6xxx_ops;
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