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nvme: Add Support for Opal: Unlock from S3 & Opal Allocation/Ioctls 

This patch implements the necessary logic to unlock an Opal
enabled device coming back from an S3.

The patch also implements the SED/Opal allocation necessary to support
the opal ioctls.

Signed-off-by: Scott Bauer <scott.bauer@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Scott Bauer 2017-02-03 12:50:32 -07:00 committed by Jens Axboe
parent 455a7b238c
commit a98e58e54f
3 changed files with 46 additions and 0 deletions
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25
drivers/nvme/host/core.c
View File

@ -788,6 +788,8 @@ static int nvme_ioctl(struct block_device *bdev, fmode_t mode,
if (ns->ndev)
return nvme_nvm_ioctl(ns, cmd, arg);
#endif
if (is_sed_ioctl(cmd))
return sed_ioctl(&ns->ctrl->opal_dev, cmd, arg);
return -ENOTTY;
}
}
@ -1055,6 +1057,29 @@ static const struct pr_ops nvme_pr_ops = {
.pr_clear = nvme_pr_clear,
};
#ifdef CONFIG_BLK_SED_OPAL
int nvme_sec_submit(struct opal_dev *dev, u16 spsp, u8 secp,
void *buffer, size_t len, bool send)
{
struct nvme_command cmd;
struct nvme_ctrl *ctrl = NULL;
memset(&cmd, 0, sizeof(cmd));
if (send)
cmd.common.opcode = nvme_admin_security_send;
else
cmd.common.opcode = nvme_admin_security_recv;
ctrl = container_of(dev, struct nvme_ctrl, opal_dev);
cmd.common.nsid = 0;
cmd.common.cdw10[0] = cpu_to_le32(((u32)secp) << 24 | ((u32)spsp) << 8);
cmd.common.cdw10[1] = cpu_to_le32(len);
return __nvme_submit_sync_cmd(ctrl->admin_q, &cmd, NULL, buffer, len,
ADMIN_TIMEOUT, NVME_QID_ANY, 1, 0);
}
EXPORT_SYMBOL_GPL(nvme_sec_submit);
#endif /* CONFIG_BLK_SED_OPAL */
static const struct block_device_operations nvme_fops = {
.owner = THIS_MODULE,
.ioctl = nvme_ioctl,

14
drivers/nvme/host/nvme.h
View File

@ -19,6 +19,7 @@
#include <linux/kref.h>
#include <linux/blk-mq.h>
#include <linux/lightnvm.h>
#include <linux/sed-opal.h>
enum {
/*
@ -125,6 +126,8 @@ struct nvme_ctrl {
struct list_head node;
struct ida ns_ida;
struct opal_dev opal_dev;
char name[12];
char serial[20];
char model[40];
@ -275,6 +278,17 @@ int nvme_init_identify(struct nvme_ctrl *ctrl);
void nvme_queue_scan(struct nvme_ctrl *ctrl);
void nvme_remove_namespaces(struct nvme_ctrl *ctrl);
#ifdef CONFIG_BLK_SED_OPAL
int nvme_sec_submit(struct opal_dev *dev, u16 spsp, u8 secp,
void *buffer, size_t len, bool send);
#else
static inline int nvme_sec_submit(struct opal_dev *dev, u16 spsp, u8 secp,
void *buffer, size_t len, bool send)
{
return 0;
}
#endif /* CONFIG_BLK_DEV_SED_OPAL */
#define NVME_NR_AERS 1
void nvme_complete_async_event(struct nvme_ctrl *ctrl, __le16 status,
union nvme_result *res);

7
drivers/nvme/host/pci.c
View File

@ -43,6 +43,7 @@
#include <linux/types.h>
#include <linux/io-64-nonatomic-lo-hi.h>
#include <asm/unaligned.h>
#include <linux/sed-opal.h>
#include "nvme.h"
@ -1757,6 +1758,7 @@ static void nvme_remove_dead_ctrl(struct nvme_dev *dev, int status)
static void nvme_reset_work(struct work_struct *work)
{
struct nvme_dev *dev = container_of(work, struct nvme_dev, reset_work);
bool was_suspend = !!(dev->ctrl.ctrl_config & NVME_CC_SHN_NORMAL);
int result = -ENODEV;
if (WARN_ON(dev->ctrl.state == NVME_CTRL_RESETTING))
@ -1789,6 +1791,11 @@ static void nvme_reset_work(struct work_struct *work)
if (result)
goto out;
init_opal_dev(&dev->ctrl.opal_dev, &nvme_sec_submit);
if (was_suspend)
opal_unlock_from_suspend(&dev->ctrl.opal_dev);
result = nvme_setup_io_queues(dev);
if (result)
goto out;