Add support to those uic commands, that are currently supported
by ufshcd api: the variants of dme_{peer}_{set_get}.
At this point better not to add any new api, as careless
uic command may turn the device into a brick.
Signed-off-by: Avri Altman
---
drivers/scsi/ufs/ufs_bsg.c | 54
Do that for the currently supported UPIUs:
query, nop out, and task management.
We do not support UPIU of type scsi command yet, while
we are using the job's request and reply pointers to hold
the payload. We will look into it in later patches.
We might need to elaborate the raw upiu api for that
Add a bsg endpoint that supports UPIUs.
For now, just provide an API to allocate and remove
ufs-bsg node. We will use this framework to
manage ufs devices by sending UPIU transactions.
For the time being, implements an empty bsg_request() -
will add some more functionality in coming patches.
Non
The UFS host software uses a combination of a host register set,
and Transfer Request Descriptors in system memory to communicate
with host controller hardware. In its mmio space, a separate places
are assigned to UTP Transfer Request Descriptor ("utrd") list, and
to UTP Task Management Request Des
Do that in order to re-use its code if the task request and response
UPIUs are given externally.
Signed-off-by: Avri Altman
---
drivers/scsi/ufs/ufshcd.c | 39 ---
1 file changed, 28 insertions(+), 11 deletions(-)
diff --git a/drivers/scsi/ufs/ufshcd.c b/driv
From: Christoph Hellwig
Remove the pointless task_req_upiu and task_rsp_upiu indirections,
which are __le32 arrays always cast to given structures and just add
the members directly. Also clean up variables names in use in the
callers a bit to make the code more readable.
Signed-off-by: Christop
From: Christoph Hellwig
Add a helper that takes a utp_task_req_desc and issues it, which will
be useful for UFS bsg support. Rewrite ufshcd_issue_tm_cmd0x to use
this new helper.
Signed-off-by: Christoph Hellwig
---
drivers/scsi/ufs/ufshcd.c | 140 -
Here is a proposal to use a bsg endpoint to manage ufs devices.
We will do that by adding a bsg device node to the ufs driver,
and use it to send UPIU transactions to the ufs device.
It will serve as a ufs device management infrastructure,
for device configuration, provisioning, testing and valid
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