staging/hfi1: Add definitions needed for TID cache

In preparation for adding the TID caching support, there is a set
of headers, structures, and variables which will be needed. This
commit adds them to the hfi.h header file.

Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/staging/rdma/hfi1/hfi.h b/drivers/staging/rdma/hfi1/hfi.h
index ddb21f0fffe7d5df275e7926008e0d13263264fa..51ecf45ef70bcbad492f023df6bcd9f19f31ace7 100644 (file)
--- a/drivers/staging/rdma/hfi1/hfi.h
+++ b/drivers/staging/rdma/hfi1/hfi.h
@@ -179,6 +179,11 @@ struct ctxt_eager_bufs {
        } *rcvtids;
 };
 
+struct exp_tid_set {
+       struct list_head list;
+       u32 count;
+};
+
 struct hfi1_ctxtdata {
        /* shadow the ctxt's RcvCtrl register */
        u64 rcvctrl;
@@ -247,6 +252,11 @@ struct hfi1_ctxtdata {
        struct page **tid_pg_list;
        /* dma handles for exp tid pages */
        dma_addr_t *physshadow;
+
+       struct exp_tid_set tid_group_list;
+       struct exp_tid_set tid_used_list;
+       struct exp_tid_set tid_full_list;
+
        /* lock protecting all Expected TID data */
        spinlock_t exp_lock;
        /* number of pio bufs for this ctxt (all procs, if shared) */
@@ -1137,6 +1147,16 @@ struct hfi1_filedata {
        struct hfi1_user_sdma_pkt_q *pq;
        /* for cpu affinity; -1 if none */
        int rec_cpu_num;
+       struct mmu_notifier mn;
+       struct rb_root tid_rb_root;
+       spinlock_t tid_lock; /* protect tid_[limit,used] counters */
+       u32 tid_limit;
+       u32 tid_used;
+       spinlock_t rb_lock; /* protect tid_rb_root RB tree */
+       u32 *invalid_tids;
+       u32 invalid_tid_idx;
+       spinlock_t invalid_lock; /* protect the invalid_tids array */
+       int (*mmu_rb_insert)(struct rb_root *, struct mmu_rb_node *);
 };
 
 extern struct list_head hfi1_dev_list;