diff options
Diffstat (limited to 'drivers/scsi/sd.c')
| -rw-r--r-- | drivers/scsi/sd.c | 53 |
1 files changed, 52 insertions, 1 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 7dc8cb8f1818..bea36adeee17 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> @@ -629,6 +630,26 @@ 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) { @@ -1441,6 +1462,9 @@ 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 @@ -3004,6 +3028,20 @@ 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. @@ -3057,6 +3095,7 @@ 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; @@ -3217,6 +3256,12 @@ 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); @@ -3366,6 +3411,8 @@ 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); @@ -3518,6 +3565,7 @@ 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; @@ -3526,7 +3574,10 @@ 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; } /** |