diff options
| author | Sudeep Dutt <sudeep.dutt@intel.com> | 2015-09-30 04:16:25 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-10-04 14:54:54 +0300 |
| commit | d18243293a48cddf0a91d19b3da18551e18419b5 (patch) | |
| tree | 59c7a4be6ccee731271de1806749692f8ad185c0 /drivers/misc/mic/scif/scif_nodeqp.c | |
| parent | 564c8d8dfc39638978ac37d37f61733240f31a36 (diff) | |
| download | linux-d18243293a48cddf0a91d19b3da18551e18419b5.tar.xz | |
misc: mic: SCIF RMA nodeqp and minor miscellaneous changes
This patch adds the SCIF kernel node QP control messages required to
enable SCIF RMAs. Examples of such node QP control messages include
registration, unregistration, remote memory allocation requests,
remote memory unmap and SCIF remote fence requests.
The patch also updates the SCIF driver with minor changes required to
enable SCIF RMAs by adding the new files to the build, initializing
RMA specific information during SCIF endpoint creation, reserving SCIF
DMA channels, initializing SCIF RMA specific global data structures,
adding the IOCTL hooks required for SCIF RMAs and updating RMA
specific debugfs hooks.
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Nikhil Rao <nikhil.rao@intel.com>
Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mic/scif/scif_nodeqp.c')
| -rw-r--r-- | drivers/misc/mic/scif/scif_nodeqp.c | 65 |
1 files changed, 59 insertions, 6 deletions
diff --git a/drivers/misc/mic/scif/scif_nodeqp.c b/drivers/misc/mic/scif/scif_nodeqp.c index 5cdb9f088350..7180d566c74b 100644 --- a/drivers/misc/mic/scif/scif_nodeqp.c +++ b/drivers/misc/mic/scif/scif_nodeqp.c @@ -105,18 +105,22 @@ int scif_setup_qp_connect(struct scif_qp *qp, dma_addr_t *qp_offset, int local_size, struct scif_dev *scifdev) { - void *local_q = NULL; + void *local_q = qp->inbound_q.rb_base; int err = 0; u32 tmp_rd = 0; spin_lock_init(&qp->send_lock); spin_lock_init(&qp->recv_lock); - local_q = kzalloc(local_size, GFP_KERNEL); + /* Allocate rb only if not already allocated */ if (!local_q) { - err = -ENOMEM; - return err; + local_q = kzalloc(local_size, GFP_KERNEL); + if (!local_q) { + err = -ENOMEM; + return err; + } } + err = scif_map_single(&qp->local_buf, local_q, scifdev, local_size); if (err) goto kfree; @@ -552,7 +556,29 @@ static char *message_types[] = {"BAD", "DISCNT_ACK", "CLIENT_SENT", "CLIENT_RCVD", - "SCIF_GET_NODE_INFO"}; + "SCIF_GET_NODE_INFO", + "REGISTER", + "REGISTER_ACK", + "REGISTER_NACK", + "UNREGISTER", + "UNREGISTER_ACK", + "UNREGISTER_NACK", + "ALLOC_REQ", + "ALLOC_GNT", + "ALLOC_REJ", + "FREE_PHYS", + "FREE_VIRT", + "MUNMAP", + "MARK", + "MARK_ACK", + "MARK_NACK", + "WAIT", + "WAIT_ACK", + "WAIT_NACK", + "SIGNAL_LOCAL", + "SIGNAL_REMOTE", + "SIG_ACK", + "SIG_NACK"}; static void scif_display_message(struct scif_dev *scifdev, struct scifmsg *msg, @@ -646,10 +672,16 @@ int scif_nodeqp_send(struct scif_dev *scifdev, struct scifmsg *msg) * * Work queue handler for servicing miscellaneous SCIF tasks. * Examples include: - * 1) Cleanup of zombie endpoints. + * 1) Remote fence requests. + * 2) Destruction of temporary registered windows + * created during scif_vreadfrom()/scif_vwriteto(). + * 3) Cleanup of zombie endpoints. */ void scif_misc_handler(struct work_struct *work) { + scif_rma_handle_remote_fences(); + scif_rma_destroy_windows(); + scif_rma_destroy_tcw_invalid(); scif_cleanup_zombie_epd(); } @@ -995,6 +1027,27 @@ static void (*scif_intr_func[SCIF_MAX_MSG + 1]) scif_clientsend, /* SCIF_CLIENT_SENT */ scif_clientrcvd, /* SCIF_CLIENT_RCVD */ scif_get_node_info_resp,/* SCIF_GET_NODE_INFO */ + scif_recv_reg, /* SCIF_REGISTER */ + scif_recv_reg_ack, /* SCIF_REGISTER_ACK */ + scif_recv_reg_nack, /* SCIF_REGISTER_NACK */ + scif_recv_unreg, /* SCIF_UNREGISTER */ + scif_recv_unreg_ack, /* SCIF_UNREGISTER_ACK */ + scif_recv_unreg_nack, /* SCIF_UNREGISTER_NACK */ + scif_alloc_req, /* SCIF_ALLOC_REQ */ + scif_alloc_gnt_rej, /* SCIF_ALLOC_GNT */ + scif_alloc_gnt_rej, /* SCIF_ALLOC_REJ */ + scif_free_virt, /* SCIF_FREE_VIRT */ + scif_recv_munmap, /* SCIF_MUNMAP */ + scif_recv_mark, /* SCIF_MARK */ + scif_recv_mark_resp, /* SCIF_MARK_ACK */ + scif_recv_mark_resp, /* SCIF_MARK_NACK */ + scif_recv_wait, /* SCIF_WAIT */ + scif_recv_wait_resp, /* SCIF_WAIT_ACK */ + scif_recv_wait_resp, /* SCIF_WAIT_NACK */ + scif_recv_sig_local, /* SCIF_SIG_LOCAL */ + scif_recv_sig_remote, /* SCIF_SIG_REMOTE */ + scif_recv_sig_resp, /* SCIF_SIG_ACK */ + scif_recv_sig_resp, /* SCIF_SIG_NACK */ }; /** |