Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband

[firefly-linux-kernel-4.4.55.git] / drivers / infiniband / hw / ehca / ipz_pt_fn.h

diff --git a/drivers/infiniband/hw/ehca/ipz_pt_fn.h b/drivers/infiniband/hw/ehca/ipz_pt_fn.h
index 2f13509d5257a1436d3ffa5a0f4892541958a083..57f141a36bceb2c6a5579ab4548f9d2c1cae3b2e 100644 (file)
--- a/drivers/infiniband/hw/ehca/ipz_pt_fn.h
+++ b/drivers/infiniband/hw/ehca/ipz_pt_fn.h
@@ -79,7 +79,7 @@ static inline void *ipz_qeit_calc(struct ipz_queue *queue, u64 q_offset)
        if (q_offset >= queue->queue_length)
                return NULL;
        current_page = (queue->queue_pages)[q_offset >> EHCA_PAGESHIFT];
-       return  &current_page->entries[q_offset & (EHCA_PAGESIZE - 1)];
+       return &current_page->entries[q_offset & (EHCA_PAGESIZE - 1)];
 }
 
 /*
@@ -140,6 +140,14 @@ static inline void *ipz_qeit_get_inc_valid(struct ipz_queue *queue)
        return cqe;
 }
 
+static inline int ipz_qeit_is_valid(struct ipz_queue *queue)
+{
+       struct ehca_cqe *cqe = ipz_qeit_get(queue);
+       u32 cqe_flags = cqe->cqe_flags;
+
+       return cqe_flags >> 7 == (queue->toggle_state & 1);
+}
+
 /*
  * returns and resets Queue Entry iterator
  * returns address (kv) of first Queue Entry
@@ -150,6 +158,21 @@ static inline void *ipz_qeit_reset(struct ipz_queue *queue)
        return ipz_qeit_get(queue);
 }
 
+/*
+ * return the q_offset corresponding to an absolute address
+ */
+int ipz_queue_abs_to_offset(struct ipz_queue *queue, u64 addr, u64 *q_offset);
+
+/*
+ * return the next queue offset. don't modify the queue.
+ */
+static inline u64 ipz_queue_advance_offset(struct ipz_queue *queue, u64 offset)
+{
+       offset += queue->qe_size;
+       if (offset >= queue->queue_length) offset = 0;
+       return offset;
+}
+
 /* struct generic page table */
 struct ipz_pt {
        u64 entries[EHCA_PT_ENTRIES];
@@ -232,6 +255,15 @@ static inline void *ipz_eqit_eq_get_inc_valid(struct ipz_queue *queue)
        return ret;
 }
 
+static inline void *ipz_eqit_eq_peek_valid(struct ipz_queue *queue)
+{
+       void *ret = ipz_qeit_get(queue);
+       u32 qe = *(u8 *) ret;
+       if ((qe >> 7) != (queue->toggle_state & 1))
+               return NULL;
+       return ret;
+}
+
 /* returns address (GX) of first queue entry */
 static inline u64 ipz_qpt_get_firstpage(struct ipz_qpt *qpt)
 {