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authorLinus Torvalds <torvalds@linux-foundation.org>2017-07-06 19:41:58 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-07-06 19:41:58 +0300
commit109a5db5042c035ded330b948a710b9a0c20934d (patch)
tree5ebd38a4e36ea740a3de6edbc7b6a3250a776ef5 /drivers/scsi/sd.c
parenta4c20b9a574b9720acf6c647eaff5e7e1e688086 (diff)
parentd80210f25ff0050245556bb8ce84d280d8fa4ca7 (diff)
downloadlinux-109a5db5042c035ded330b948a710b9a0c20934d.tar.xz
Merge branch 'for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
Pull libata updates from Tejun Heo: - Christoph added support for TCG OPAL self encrypting disks - Minwoo added support for ATA PASS-THROUGH(32) - Linus Walleij removed spurious drvdata assignments in some drivers - Support for a few new device and other fixes * 'for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: (33 commits) sd: add support for TCG OPAL self encrypting disks libata: fix build warning from unused goto label libata: Support for an ATA PASS-THROUGH(32) command. ahci: Add Device ID for ASMedia 1061R and 1062R sata_via: Enable optional hotplug on VT6420 ata: ahci_brcm: Avoid writing to read-only registers libata: Add the AHCI_HFLAG_NO_WRITE_TO_RO flag libata: Add the AHCI_HFLAG_YES_ALPM flag ata: ftide010: fix resource printing libata: make the function name in comment match the actual function ata: sata_rcar: make of_device_ids const. ata: pata_octeon_cf: make of_device_ids const. libata: Convert bare printks to pr_cont libahci: wrong comments in ahci_do_softreset() ata: declare ata_port_info structures as const ata: Add driver for Faraday Technology FTIDE010 ata: Add DT bindings for the Gemini SATA bridge ata: Add DT bindings for Faraday Technology FTIDE010 libata: implement SECURITY PROTOCOL IN/OUT libata: factor out a ata_identify_page_supported helper ...
Diffstat (limited to 'drivers/scsi/sd.c')
-rw-r--r--drivers/scsi/sd.c53
1 files changed, 52 insertions, 1 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index b6bb4e0ce0e3..8796d908fcdd 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -50,6 +50,7 @@
#include <linux/string_helpers.h>
#include <linux/async.h>
#include <linux/slab.h>
+#include <linux/sed-opal.h>
#include <linux/pm_runtime.h>
#include <linux/pr.h>
#include <linux/t10-pi.h>
@@ -643,6 +644,26 @@ static void scsi_disk_put(struct scsi_disk *sdkp)
mutex_unlock(&sd_ref_mutex);
}
+#ifdef CONFIG_BLK_SED_OPAL
+static int sd_sec_submit(void *data, u16 spsp, u8 secp, void *buffer,
+ size_t len, bool send)
+{
+ struct scsi_device *sdev = data;
+ u8 cdb[12] = { 0, };
+ int ret;
+
+ cdb[0] = send ? SECURITY_PROTOCOL_OUT : SECURITY_PROTOCOL_IN;
+ cdb[1] = secp;
+ put_unaligned_be16(spsp, &cdb[2]);
+ put_unaligned_be32(len, &cdb[6]);
+
+ ret = scsi_execute_req(sdev, cdb,
+ send ? DMA_TO_DEVICE : DMA_FROM_DEVICE,
+ buffer, len, NULL, SD_TIMEOUT, SD_MAX_RETRIES, NULL);
+ return ret <= 0 ? ret : -EIO;
+}
+#endif /* CONFIG_BLK_SED_OPAL */
+
static unsigned char sd_setup_protect_cmnd(struct scsi_cmnd *scmd,
unsigned int dix, unsigned int dif)
{
@@ -1454,6 +1475,9 @@ static int sd_ioctl(struct block_device *bdev, fmode_t mode,
if (error)
goto out;
+ if (is_sed_ioctl(cmd))
+ return sed_ioctl(sdkp->opal_dev, cmd, p);
+
/*
* Send SCSI addressing ioctls directly to mid level, send other
* ioctls to block level and then onto mid level if they can't be
@@ -3014,6 +3038,20 @@ static void sd_read_write_same(struct scsi_disk *sdkp, unsigned char *buffer)
sdkp->ws10 = 1;
}
+static void sd_read_security(struct scsi_disk *sdkp, unsigned char *buffer)
+{
+ struct scsi_device *sdev = sdkp->device;
+
+ if (!sdev->security_supported)
+ return;
+
+ if (scsi_report_opcode(sdev, buffer, SD_BUF_SIZE,
+ SECURITY_PROTOCOL_IN) == 1 &&
+ scsi_report_opcode(sdev, buffer, SD_BUF_SIZE,
+ SECURITY_PROTOCOL_OUT) == 1)
+ sdkp->security = 1;
+}
+
/**
* sd_revalidate_disk - called the first time a new disk is seen,
* performs disk spin up, read_capacity, etc.
@@ -3067,6 +3105,7 @@ static int sd_revalidate_disk(struct gendisk *disk)
sd_read_cache_type(sdkp, buffer);
sd_read_app_tag_own(sdkp, buffer);
sd_read_write_same(sdkp, buffer);
+ sd_read_security(sdkp, buffer);
}
sdkp->first_scan = 0;
@@ -3227,6 +3266,12 @@ static void sd_probe_async(void *data, async_cookie_t cookie)
sd_revalidate_disk(gd);
+ if (sdkp->security) {
+ sdkp->opal_dev = init_opal_dev(sdp, &sd_sec_submit);
+ if (sdkp->opal_dev)
+ sd_printk(KERN_NOTICE, sdkp, "supports TCG Opal\n");
+ }
+
sd_printk(KERN_NOTICE, sdkp, "Attached SCSI %sdisk\n",
sdp->removable ? "removable " : "");
scsi_autopm_put_device(sdp);
@@ -3376,6 +3421,8 @@ static int sd_remove(struct device *dev)
sd_zbc_remove(sdkp);
+ free_opal_dev(sdkp->opal_dev);
+
blk_register_region(devt, SD_MINORS, NULL,
sd_default_probe, NULL, NULL);
@@ -3528,6 +3575,7 @@ static int sd_suspend_runtime(struct device *dev)
static int sd_resume(struct device *dev)
{
struct scsi_disk *sdkp = dev_get_drvdata(dev);
+ int ret;
if (!sdkp) /* E.g.: runtime resume at the start of sd_probe() */
return 0;
@@ -3536,7 +3584,10 @@ static int sd_resume(struct device *dev)
return 0;
sd_printk(KERN_NOTICE, sdkp, "Starting disk\n");
- return sd_start_stop_device(sdkp, 1);
+ ret = sd_start_stop_device(sdkp, 1);
+ if (!ret)
+ opal_unlock_from_suspend(sdkp->opal_dev);
+ return ret;
}
/**