libata: implement dump_id force param
Add dump_id libata.force parameter. If specified, libata dumps full IDENTIFY data during device configuration. This is to aid debugging. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Larry Baker <baker@usgs.gov> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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@ -1252,6 +1252,8 @@ and is between 256 and 4096 characters. It is defined in the file
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* nohrst, nosrst, norst: suppress hard, soft
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and both resets.
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* dump_id: dump IDENTIFY data.
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If there are multiple matching configurations changing
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the same attribute, the last one is used.
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@ -2126,6 +2126,14 @@ retry:
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goto err_out;
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}
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if (dev->horkage & ATA_HORKAGE_DUMP_ID) {
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ata_dev_printk(dev, KERN_DEBUG, "dumping IDENTIFY data, "
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"class=%d may_fallback=%d tried_spinup=%d\n",
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class, may_fallback, tried_spinup);
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print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET,
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16, 2, id, ATA_ID_WORDS * sizeof(*id), true);
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}
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/* Falling back doesn't make sense if ID data was read
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* successfully at least once.
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*/
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@ -6377,6 +6385,7 @@ static int __init ata_parse_force_one(char **cur,
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{ "3.0Gbps", .spd_limit = 2 },
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{ "noncq", .horkage_on = ATA_HORKAGE_NONCQ },
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{ "ncq", .horkage_off = ATA_HORKAGE_NONCQ },
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{ "dump_id", .horkage_on = ATA_HORKAGE_DUMP_ID },
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{ "pio0", .xfer_mask = 1 << (ATA_SHIFT_PIO + 0) },
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{ "pio1", .xfer_mask = 1 << (ATA_SHIFT_PIO + 1) },
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{ "pio2", .xfer_mask = 1 << (ATA_SHIFT_PIO + 2) },
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@ -386,6 +386,7 @@ enum {
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ATA_HORKAGE_1_5_GBPS = (1 << 13), /* force 1.5 Gbps */
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ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */
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ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */
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ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */
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/* DMA mask for user DMA control: User visible values; DO NOT
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renumber */
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