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path: root/drivers/misc/mic/scif/scif_epd.h
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Diffstat (limited to 'drivers/misc/mic/scif/scif_epd.h')
-rw-r--r--drivers/misc/mic/scif/scif_epd.h50
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/misc/mic/scif/scif_epd.h b/drivers/misc/mic/scif/scif_epd.h
index 331322a25213..1771d7a9b8d0 100644
--- a/drivers/misc/mic/scif/scif_epd.h
+++ b/drivers/misc/mic/scif/scif_epd.h
@@ -96,7 +96,11 @@ struct scif_endpt_qp_info {
* @conn_port: Connection port
* @conn_err: Errors during connection
* @conn_async_state: Async connection
+ * @conn_pend_wq: Used by poll while waiting for incoming connections
* @conn_list: List of async connection requests
+ * @rma_info: Information for triggering SCIF RMA and DMA operations
+ * @mmu_list: link to list of MMU notifier cleanup work
+ * @anon: anonymous file for use in kernel mode scif poll
*/
struct scif_endpt {
enum scif_epd_state state;
@@ -125,7 +129,11 @@ struct scif_endpt {
struct scif_port_id conn_port;
int conn_err;
int conn_async_state;
+ wait_queue_head_t conn_pend_wq;
struct list_head conn_list;
+ struct scif_endpt_rma_info rma_info;
+ struct list_head mmu_list;
+ struct file *anon;
};
static inline int scifdev_alive(struct scif_endpt *ep)
@@ -133,6 +141,43 @@ static inline int scifdev_alive(struct scif_endpt *ep)
return _scifdev_alive(ep->remote_dev);
}
+/*
+ * scif_verify_epd:
+ * ep: SCIF endpoint
+ *
+ * Checks several generic error conditions and returns the
+ * appropriate error.
+ */
+static inline int scif_verify_epd(struct scif_endpt *ep)
+{
+ if (ep->state == SCIFEP_DISCONNECTED)
+ return -ECONNRESET;
+
+ if (ep->state != SCIFEP_CONNECTED)
+ return -ENOTCONN;
+
+ if (!scifdev_alive(ep))
+ return -ENODEV;
+
+ return 0;
+}
+
+static inline int scif_anon_inode_getfile(scif_epd_t epd)
+{
+ epd->anon = anon_inode_getfile("scif", &scif_anon_fops, NULL, 0);
+ if (IS_ERR(epd->anon))
+ return PTR_ERR(epd->anon);
+ return 0;
+}
+
+static inline void scif_anon_inode_fput(scif_epd_t epd)
+{
+ if (epd->anon) {
+ fput(epd->anon);
+ epd->anon = NULL;
+ }
+}
+
void scif_cleanup_zombie_epd(void);
void scif_teardown_ep(void *endpt);
void scif_cleanup_ep_qp(struct scif_endpt *ep);
@@ -157,4 +202,9 @@ void scif_clientsend(struct scif_dev *scifdev, struct scifmsg *msg);
void scif_clientrcvd(struct scif_dev *scifdev, struct scifmsg *msg);
int __scif_connect(scif_epd_t epd, struct scif_port_id *dst, bool non_block);
int __scif_flush(scif_epd_t epd);
+int scif_mmap(struct vm_area_struct *vma, scif_epd_t epd);
+unsigned int __scif_pollfd(struct file *f, poll_table *wait,
+ struct scif_endpt *ep);
+int __scif_pin_pages(void *addr, size_t len, int *out_prot,
+ int map_flags, scif_pinned_pages_t *pages);
#endif /* SCIF_EPD_H */