diff options
| author | Christoph Hellwig <hch@lst.de> | 2017-06-04 14:42:24 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2017-06-05 15:29:22 -0400 |
| commit | 818831c8b22f75353f59a63a484e20736c0567c9 (patch) | |
| tree | 7b76516e71dcaa9a827475017827201a1b35b506 /drivers/ata/libata-core.c | |
| parent | a0fd2454a36ffab2ce39b3a91c1385a5f98e63f0 (diff) | |
| download | linux-818831c8b22f75353f59a63a484e20736c0567c9.tar.bz2 | |
libata: implement SECURITY PROTOCOL IN/OUT
This allows us to use the generic OPAL code with ATA devices.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'drivers/ata/libata-core.c')
| -rw-r--r-- | drivers/ata/libata-core.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 61c97818568c..a846c29f3248 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -2405,6 +2405,37 @@ static void ata_dev_config_zac(struct ata_device *dev) } } +static void ata_dev_config_trusted(struct ata_device *dev) +{ + struct ata_port *ap = dev->link->ap; + u64 trusted_cap; + unsigned int err; + + if (!ata_identify_page_supported(dev, ATA_LOG_SECURITY)) { + ata_dev_warn(dev, + "Security Log not supported\n"); + return; + } + + err = ata_read_log_page(dev, ATA_LOG_IDENTIFY_DEVICE, ATA_LOG_SECURITY, + ap->sector_buf, 1); + if (err) { + ata_dev_dbg(dev, + "failed to read Security Log, Emask 0x%x\n", err); + return; + } + + trusted_cap = get_unaligned_le64(&ap->sector_buf[40]); + if (!(trusted_cap & (1ULL << 63))) { + ata_dev_dbg(dev, + "Trusted Computing capability qword not valid!\n"); + return; + } + + if (trusted_cap & (1 << 0)) + dev->flags |= ATA_DFLAG_TRUSTED; +} + /** * ata_dev_configure - Configure the specified ATA/ATAPI device * @dev: Target device to configure @@ -2629,6 +2660,7 @@ int ata_dev_configure(struct ata_device *dev) } ata_dev_config_sense_reporting(dev); ata_dev_config_zac(dev); + ata_dev_config_trusted(dev); dev->cdb_len = 16; } |