Correct queue minimum size enforcement.

Minimum queue size was not enforced at the Agent level.  Minimum
size should be one page to give unifority across all asics.

Change-Id: I26394f79458d09fbceb79fc8aaf495e2c26a8ff3

runtime/hsa-runtime/core/inc/amd_gpu_agent.h

@@ -336,7 +336,8 @@ class GpuAgent : public GpuAgentInt {
   const std::function<void(void*)>& system_deallocator() const { return system_deallocator_; }
 
  protected:
-  static const uint32_t minAqlSize_ = 0x1000;   // 4KB min
+  // Sizes are in packets.
+  static const uint32_t minAqlSize_ = 0x40;     // 4KB min
   static const uint32_t maxAqlSize_ = 0x20000;  // 8MB max
 
   // @brief Create an internal queue allowing tools to be notified.
@@ -344,7 +345,7 @@ class GpuAgent : public GpuAgentInt {
     return CreateInterceptibleQueue(core::Queue::DefaultErrorHandler, nullptr);
   }
 
-  // @brief // @brief Create an internal queue, with a custom error handler, allowing tools to be
+  // @brief Create an internal queue, with a custom error handler, allowing tools to be
   // notified.
   core::Queue* CreateInterceptibleQueue(void (*callback)(hsa_status_t status, hsa_queue_t* source,
                                                          void* data),

runtime/hsa-runtime/core/runtime/amd_aql_queue.cpp

@@ -671,8 +671,8 @@ void AqlQueue::AllocRegisteredRingBuffer(uint32_t queue_size_pkts) {
 #endif
   } else {
     // Allocate storage for the ring buffer.
-    ring_buf_alloc_bytes_ = AlignUp(
-        queue_size_pkts * sizeof(core::AqlPacket), 4096);
+    ring_buf_alloc_bytes_ = queue_size_pkts * sizeof(core::AqlPacket);
+    assert(IsMultipleOf(ring_buf_alloc_bytes_, 4096) && "Ring buffer sizes must be 4KiB aligned.");
 
     ring_buf_ = agent_->system_allocator()(
         ring_buf_alloc_bytes_, 0x1000,

runtime/hsa-runtime/core/runtime/amd_gpu_agent.cpp

@@ -1055,6 +1055,11 @@ hsa_status_t GpuAgent::QueueCreate(size_t size, hsa_queue_type32_t queue_type,
     return HSA_STATUS_ERROR_OUT_OF_RESOURCES;
   }
 
+  // Enforce min size
+  if (size < minAqlSize_) {
+    return HSA_STATUS_ERROR_INVALID_ARGUMENT;
+  }
+
   // Allocate scratch memory
   ScratchInfo scratch = {0};
   if (private_segment_size == UINT_MAX) {