Wire up ufshcd.c with the UFS Crypto API, the block layer inline
encryption additions and the keyslot manager.
Signed-off-by: Satya Tangirala <sat...@google.com>
---
drivers/scsi/ufs/ufshcd-crypto.c | 30 ++++++++++++++++++
drivers/scsi/ufs/ufshcd-crypto.h | 21 +++++++++++++
drivers/scsi/ufs/ufshcd.c | 54 +++++++++++++++++++++++++++++---
drivers/scsi/ufs/ufshcd.h | 8 +++++
4 files changed, 108 insertions(+), 5 deletions(-)
diff --git a/drivers/scsi/ufs/ufshcd-crypto.c b/drivers/scsi/ufs/ufshcd-crypto.c
index b0aa072d9009..749c325686a7 100644
--- a/drivers/scsi/ufs/ufshcd-crypto.c
+++ b/drivers/scsi/ufs/ufshcd-crypto.c
@@ -352,6 +352,36 @@ void ufshcd_crypto_setup_rq_keyslot_manager(struct ufs_hba
*hba,
}
EXPORT_SYMBOL_GPL(ufshcd_crypto_setup_rq_keyslot_manager);
+int ufshcd_prepare_lrbp_crypto(struct ufs_hba *hba,
+ struct scsi_cmnd *cmd,
+ struct ufshcd_lrb *lrbp)
+{
+ struct bio_crypt_ctx *bc;
+
+ if (!bio_crypt_should_process(cmd->request)) {
+ lrbp->crypto_enable = false;
+ return 0;
+ }
+ bc = cmd->request->bio->bi_crypt_context;
+
+ if (WARN_ON(!ufshcd_is_crypto_enabled(hba))) {
+ /*
+ * Upper layer asked us to do inline encryption
+ * but that isn't enabled, so we fail this request.
+ */
+ return -EINVAL;
+ }
+ if (!ufshcd_keyslot_valid(hba, bc->bc_keyslot))
+ return -EINVAL;
+
+ lrbp->crypto_enable = true;
+ lrbp->crypto_key_slot = bc->bc_keyslot;
+ lrbp->data_unit_num = bc->bc_dun[0];
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(ufshcd_prepare_lrbp_crypto);
+
void ufshcd_crypto_destroy_rq_keyslot_manager(struct ufs_hba *hba,
struct request_queue *q)
{
diff --git a/drivers/scsi/ufs/ufshcd-crypto.h b/drivers/scsi/ufs/ufshcd-crypto.h
index 61996c6520e9..7f6596d07fd3 100644
--- a/drivers/scsi/ufs/ufshcd-crypto.h
+++ b/drivers/scsi/ufs/ufshcd-crypto.h
@@ -36,6 +36,15 @@ static inline bool ufshcd_is_crypto_enabled(struct ufs_hba
*hba)
}
/* Functions implementing UFSHCI v2.1 specification behaviour */
+int ufshcd_prepare_lrbp_crypto(struct ufs_hba *hba,
+ struct scsi_cmnd *cmd,
+ struct ufshcd_lrb *lrbp);
+
+static inline bool ufshcd_lrbp_crypto_enabled(struct ufshcd_lrb *lrbp)
+{
+ return lrbp->crypto_enable;
+}
+
void ufshcd_crypto_enable(struct ufs_hba *hba);
void ufshcd_crypto_disable(struct ufs_hba *hba);
@@ -81,6 +90,18 @@ static inline void
ufshcd_crypto_setup_rq_keyslot_manager(struct ufs_hba *hba,
static inline void ufshcd_crypto_destroy_rq_keyslot_manager(struct ufs_hba
*hba,
struct request_queue *q) { }
+static inline int ufshcd_prepare_lrbp_crypto(struct ufs_hba *hba,
+ struct scsi_cmnd *cmd,
+ struct ufshcd_lrb *lrbp)
+{
+ return 0;
+}
+
+static inline bool ufshcd_lrbp_crypto_enabled(struct ufshcd_lrb *lrbp)
+{
+ return false;
+}
+
#endif /* CONFIG_SCSI_UFS_CRYPTO */
#endif /* _UFSHCD_CRYPTO_H */
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 809502c66e25..d32202f03d95 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -47,6 +47,7 @@
#include "unipro.h"
#include "ufs-sysfs.h"
#include "ufs_bsg.h"
+#include "ufshcd-crypto.h"
#define CREATE_TRACE_POINTS
#include <trace/events/ufs.h>
@@ -860,7 +861,14 @@ static void ufshcd_enable_run_stop_reg(struct ufs_hba *hba)
*/
static inline void ufshcd_hba_start(struct ufs_hba *hba)
{
- ufshcd_writel(hba, CONTROLLER_ENABLE, REG_CONTROLLER_ENABLE);
+ u32 val = CONTROLLER_ENABLE;
+
+ if (ufshcd_hba_is_crypto_supported(hba)) {
+ ufshcd_crypto_enable(hba);
+ val |= CRYPTO_GENERAL_ENABLE;
+ }
+
+ ufshcd_writel(hba, val, REG_CONTROLLER_ENABLE);
}
/**
@@ -2214,9 +2222,23 @@ static void ufshcd_prepare_req_desc_hdr(struct
ufshcd_lrb *lrbp,
dword_0 |= UTP_REQ_DESC_INT_CMD;
/* Transfer request descriptor header fields */
+ if (ufshcd_lrbp_crypto_enabled(lrbp)) {
+#if IS_ENABLED(CONFIG_SCSI_UFS_CRYPTO)
+ dword_0 |= UTP_REQ_DESC_CRYPTO_ENABLE_CMD;
+ dword_0 |= lrbp->crypto_key_slot;
+ req_desc->header.dword_1 =
+ cpu_to_le32(lower_32_bits(lrbp->data_unit_num));
+ req_desc->header.dword_3 =
+ cpu_to_le32(upper_32_bits(lrbp->data_unit_num));
+#endif /* CONFIG_SCSI_UFS_CRYPTO */
+ } else {
+ /* dword_1 and dword_3 are reserved, hence they are set to 0 */
+ req_desc->header.dword_1 = 0;
+ req_desc->header.dword_3 = 0;
+ }
+
req_desc->header.dword_0 = cpu_to_le32(dword_0);
- /* dword_1 is reserved, hence it is set to 0 */
- req_desc->header.dword_1 = 0;
+
/*
* assigning invalid value for command status. Controller
* updates OCS on command completion, with the command
@@ -2224,8 +2246,6 @@ static void ufshcd_prepare_req_desc_hdr(struct ufshcd_lrb
*lrbp,
*/
req_desc->header.dword_2 =
cpu_to_le32(OCS_INVALID_COMMAND_STATUS);
- /* dword_3 is reserved, hence it is set to 0 */
- req_desc->header.dword_3 = 0;
req_desc->prd_table_length = 0;
}
@@ -2472,6 +2492,13 @@ static int ufshcd_queuecommand(struct Scsi_Host *host,
struct scsi_cmnd *cmd)
lrbp->task_tag = tag;
lrbp->lun = ufshcd_scsi_to_upiu_lun(cmd->device->lun);
lrbp->intr_cmd = !ufshcd_is_intr_aggr_allowed(hba) ? true : false;
+
+ err = ufshcd_prepare_lrbp_crypto(hba, cmd, lrbp);
+ if (err) {
+ lrbp->cmd = NULL;
+ clear_bit_unlock(tag, &hba->lrb_in_use);
+ goto out;
+ }
lrbp->req_abort_skip = false;
ufshcd_comp_scsi_upiu(hba, lrbp);
@@ -2505,6 +2532,9 @@ static int ufshcd_compose_dev_cmd(struct ufs_hba *hba,
lrbp->task_tag = tag;
lrbp->lun = 0; /* device management cmd is not specific to any LUN */
lrbp->intr_cmd = true; /* No interrupt aggregation */
+#if IS_ENABLED(CONFIG_SCSI_UFS_CRYPTO)
+ lrbp->crypto_enable = false; /* No crypto operations */
+#endif
hba->dev_cmd.type = cmd_type;
return ufshcd_comp_devman_upiu(hba, lrbp);
@@ -4244,6 +4274,8 @@ static inline void ufshcd_hba_stop(struct ufs_hba *hba,
bool can_sleep)
{
int err;
+ ufshcd_crypto_disable(hba);
+
ufshcd_writel(hba, CONTROLLER_DISABLE, REG_CONTROLLER_ENABLE);
err = ufshcd_wait_for_register(hba, REG_CONTROLLER_ENABLE,
CONTROLLER_ENABLE, CONTROLLER_DISABLE,
@@ -4654,6 +4686,8 @@ static int ufshcd_slave_configure(struct scsi_device
*sdev)
if (ufshcd_is_rpm_autosuspend_allowed(hba))
sdev->rpm_autosuspend = 1;
+ ufshcd_crypto_setup_rq_keyslot_manager(hba, q);
+
return 0;
}
@@ -4664,6 +4698,7 @@ static int ufshcd_slave_configure(struct scsi_device
*sdev)
static void ufshcd_slave_destroy(struct scsi_device *sdev)
{
struct ufs_hba *hba;
+ struct request_queue *q = sdev->request_queue;
hba = shost_priv(sdev->host);
/* Drop the reference as it won't be needed anymore */
@@ -4674,6 +4709,8 @@ static void ufshcd_slave_destroy(struct scsi_device *sdev)
hba->sdev_ufs_device = NULL;
spin_unlock_irqrestore(hba->host->host_lock, flags);
}
+
+ ufshcd_crypto_destroy_rq_keyslot_manager(hba, q);
}
/**
@@ -8454,6 +8491,13 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem
*mmio_base, unsigned int irq)
/* Reset the attached device */
ufshcd_vops_device_reset(hba);
+ /* Init crypto */
+ err = ufshcd_hba_init_crypto(hba);
+ if (err) {
+ dev_err(hba->dev, "crypto setup failed\n");
+ goto out_remove_scsi_host;
+ }
+
/* Host controller enable */
err = ufshcd_hba_enable(hba);
if (err) {
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 6c8e2d04e9f8..5f5440059dd8 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -167,6 +167,9 @@ struct ufs_pm_lvl_states {
* @intr_cmd: Interrupt command (doesn't participate in interrupt aggregation)
* @issue_time_stamp: time stamp for debug purposes
* @compl_time_stamp: time stamp for statistics
+ * @crypto_enable: whether or not the request needs inline crypto operations
+ * @crypto_key_slot: the key slot to use for inline crypto
+ * @data_unit_num: the data unit number for the first block for inline crypto
* @req_abort_skip: skip request abort task flag
*/
struct ufshcd_lrb {
@@ -191,6 +194,11 @@ struct ufshcd_lrb {
bool intr_cmd;
ktime_t issue_time_stamp;
ktime_t compl_time_stamp;
+#if IS_ENABLED(CONFIG_SCSI_UFS_CRYPTO)
+ bool crypto_enable;
+ u8 crypto_key_slot;
+ u64 data_unit_num;
+#endif /* CONFIG_SCSI_UFS_CRYPTO */
bool req_abort_skip;
};
--
2.24.1.735.g03f4e72817-goog
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