diff options
| author |   Kaike Wan <kaike.wan@intel.com> | 2019-01-23 19:20:52 -0800 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2019-01-31 11:36:05 -0500 |
| commit | f01b4d5a43da47a9f61618a81a4ff3258ddc2c01 (patch) | |
| tree | bad27cec61ab4bf9436ff70309bda0b583c0e8e8 /drivers/infiniband/hw/hfi1/opfn.h | |
| parent | IB/hfi1: Add OPFN helper functions for TID RDMA feature (diff) | |
| download | linux-dev-f01b4d5a43da47a9f61618a81a4ff3258ddc2c01.tar.xz linux-dev-f01b4d5a43da47a9f61618a81a4ff3258ddc2c01.zip | |
IB/hfi1: OPFN interface
OPFN allows a pair of connected RC QPs to exchange a set of parameters
in succession. The parameter exchange itself is done using the IB compare
and swap request with a special virtual address. The request is triggered
using a reserved IB work request opcode. This patch implements the OPFN
interface to initialize, start, process, and reset the OPFN request.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/hfi1/opfn.h')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/opfn.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/opfn.h b/drivers/infiniband/hw/hfi1/opfn.h index 1927c9862b8f..5f2011cabc25 100644 --- a/drivers/infiniband/hw/hfi1/opfn.h +++ b/drivers/infiniband/hw/hfi1/opfn.h @@ -49,10 +49,37 @@ /* STL Verbs Extended */ #define IB_BTHE_E_SHIFT 24 +#define HFI1_VERBS_E_ATOMIC_VADDR U64_MAX + +struct ib_atomic_eth; + +enum hfi1_opfn_codes { + STL_VERBS_EXTD_NONE = 0, + STL_VERBS_EXTD_TID_RDMA, + STL_VERBS_EXTD_MAX +}; struct hfi1_opfn_data { + u8 extended; + u16 requested; + u16 completed; + enum hfi1_opfn_codes curr; /* serialize opfn function calls */ spinlock_t lock; + struct work_struct opfn_work; }; +/* WR opcode for OPFN */ +#define IB_WR_OPFN IB_WR_RESERVED3 + +void opfn_send_conn_request(struct work_struct *work); +void opfn_conn_response(struct rvt_qp *qp, struct rvt_ack_entry *e, + struct ib_atomic_eth *ateth); +void opfn_conn_reply(struct rvt_qp *qp, u64 data); +void opfn_conn_error(struct rvt_qp *qp); +void opfn_qp_init(struct rvt_qp *qp, struct ib_qp_attr *attr, int attr_mask); +void opfn_trigger_conn_request(struct rvt_qp *qp, u32 bth1); +int opfn_init(void); +void opfn_exit(void); + #endif /* _HFI1_OPFN_H */ |