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| author | Asutosh Das <quic_asutoshd@quicinc.com> | 2023-01-13 21:48:51 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2023-01-14 03:03:38 +0100 |
| commit | ed975065c31c2a0372e13c19e8140b69814a98ba (patch) | |
| tree | d8dff0f89d9011ad76ed4d615b44bb0d5b4dcc55 /drivers/ufs/core/ufs-mcq.c | |
| parent | scsi: ufs: mcq: Add completion support of a CQE (diff) | |
| download | linux-ed975065c31c2a0372e13c19e8140b69814a98ba.tar.xz linux-ed975065c31c2a0372e13c19e8140b69814a98ba.zip | |
scsi: ufs: core: mcq: Add completion support in poll
Complete CQE requests in poll. Assumption is that several poll completion
may happen in different CPUs for the same completion queue. Hence a spin
lock protection is added.
Co-developed-by: Can Guo <quic_cang@quicinc.com>
Signed-off-by: Can Guo <quic_cang@quicinc.com>
Signed-off-by: Asutosh Das <quic_asutoshd@quicinc.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/ufs/core/ufs-mcq.c')
| -rw-r--r-- | drivers/ufs/core/ufs-mcq.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c index cd10d59c77e0..e710d19d4c55 100644 --- a/drivers/ufs/core/ufs-mcq.c +++ b/drivers/ufs/core/ufs-mcq.c @@ -294,6 +294,18 @@ unsigned long ufshcd_mcq_poll_cqe_nolock(struct ufs_hba *hba, return completed_reqs; } +unsigned long ufshcd_mcq_poll_cqe_lock(struct ufs_hba *hba, + struct ufs_hw_queue *hwq) +{ + unsigned long completed_reqs; + + spin_lock(&hwq->cq_lock); + completed_reqs = ufshcd_mcq_poll_cqe_nolock(hba, hwq); + spin_unlock(&hwq->cq_lock); + + return completed_reqs; +} + void ufshcd_mcq_make_queues_operational(struct ufs_hba *hba) { struct ufs_hw_queue *hwq; @@ -390,6 +402,7 @@ int ufshcd_mcq_init(struct ufs_hba *hba) hwq = &hba->uhq[i]; hwq->max_entries = hba->nutrs; spin_lock_init(&hwq->sq_lock); + spin_lock_init(&hwq->cq_lock); } /* The very first HW queue serves device commands */ |