Revert "Revert "Revert "gpu: nvgpu: New allocator for VA space"""

This reverts commit ce1cf06b9a8eb6314ba0ca294e8cb430e1e141c0 since
it causes GPU pbdma interrupt to be generated.

Bug 200106514

Change-Id: If3ed9a914c4e3e7f3f98c6609c6dbf57e1eb9aad
Signed-off-by: Bharat Nihalani <bnihalani@nvidia.com>
Reviewed-on: http://git-master/r/749291

1 files changed, 7 insertions, 8 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/semaphore_gk20a.c b/drivers/gpu/nvgpu/gk20a/semaphore_gk20a.c
index 053550f6..04f61c58 100644
--- a/drivers/gpu/nvgpu/gk20a/semaphore_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/semaphore_gk20a.c
@@ -3,7 +3,7 @@
  *
  * GK20A Semaphores
  *
- * Copyright (c) 2014-2015, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2014, NVIDIA CORPORATION.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -44,10 +44,8 @@ struct gk20a_semaphore_pool *gk20a_semaphore_pool_alloc(struct device *d,
         if (gk20a_get_sgtable(d, &p->sgt, p->cpu_va, p->iova, p->size))
                 goto clean_up;
 
-        /* Sacrifice one semaphore in the name of returning error codes. */
-        if (gk20a_allocator_init(&p->alloc, unique_name,
-                                 SEMAPHORE_SIZE, p->size - SEMAPHORE_SIZE,
-                                 SEMAPHORE_SIZE))
+        if (gk20a_allocator_init(&p->alloc, unique_name, 0,
+                             p->size))
                 goto clean_up;
 
         gk20a_dbg_info("cpuva=%p iova=%llx phys=%llx", p->cpu_va,
@@ -165,8 +163,8 @@ struct gk20a_semaphore *gk20a_semaphore_alloc(struct gk20a_semaphore_pool *pool)
         if (!s)
                 return NULL;
 
-        s->offset = gk20a_balloc(&pool->alloc, SEMAPHORE_SIZE);
-        if (!s->offset) {
+        if (pool->alloc.alloc(&pool->alloc, &s->offset, SEMAPHORE_SIZE,
+                                SEMAPHORE_SIZE)) {
                 gk20a_err(pool->dev, "failed to allocate semaphore");
                 kfree(s);
                 return NULL;
@@ -188,7 +186,8 @@ static void gk20a_semaphore_free(struct kref *ref)
         struct gk20a_semaphore *s =
                 container_of(ref, struct gk20a_semaphore, ref);
 
-        gk20a_bfree(&s->pool->alloc, s->offset);
+        s->pool->alloc.free(&s->pool->alloc, s->offset, SEMAPHORE_SIZE,
+                        SEMAPHORE_SIZE);
         gk20a_semaphore_pool_put(s->pool);
         kfree(s);
 }