linux-kernel - [PATCH 6/6] habanalabs: export uapi defines to user-space

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Message-Id: <20191110215533.754-6-oded.gabbay@gmail.com>
Date:   Sun, 10 Nov 2019 23:55:33 +0200
From:   Oded Gabbay <oded.gabbay@...il.com>
To:     linux-kernel@...r.kernel.org, oshpigelman@...ana.ai,
        ttayar@...ana.ai
Cc:     gregkh@...uxfoundation.org
Subject: [PATCH 6/6] habanalabs: export uapi defines to user-space

The two defines that control the maximum size of a command buffer and the
maximum number of JOBS per CS need to be exported to the user as they are
part of the API towards user-space.

Signed-off-by: Oded Gabbay <oded.gabbay@...il.com>
---
 drivers/misc/habanalabs/habanalabs.h |  4 ----
 include/uapi/misc/habanalabs.h       | 16 ++++++++++++----
 2 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/drivers/misc/habanalabs/habanalabs.h b/drivers/misc/habanalabs/habanalabs.h
index 0813041f669a..2a5344cc1a60 100644
--- a/drivers/misc/habanalabs/habanalabs.h
+++ b/drivers/misc/habanalabs/habanalabs.h
@@ -40,8 +40,6 @@
 
 #define HL_MAX_QUEUES			128
 
-#define HL_MAX_JOBS_PER_CS		512
-
 /* MUST BE POWER OF 2 and larger than 1 */
 #define HL_MAX_PENDING_CS		64
 
@@ -242,8 +240,6 @@ struct hl_dma_fence {
  * Command Buffers
  */
 
-#define HL_MAX_CB_SIZE		0x200000	/* 2MB */
-
 /**
  * struct hl_cb_mgr - describes a Command Buffer Manager.
  * @cb_lock: protects cb_handles.
diff --git a/include/uapi/misc/habanalabs.h b/include/uapi/misc/habanalabs.h
index e387d9e560b3..716e70750f23 100644
--- a/include/uapi/misc/habanalabs.h
+++ b/include/uapi/misc/habanalabs.h
@@ -192,13 +192,15 @@ struct hl_info_args {
 /* Opcode to destroy previously created command buffer */
 #define HL_CB_OP_DESTROY	1
 
+#define HL_MAX_CB_SIZE		0x200000	/* 2MB */
+
 struct hl_cb_in {
 	/* Handle of CB or 0 if we want to create one */
 	__u64 cb_handle;
 	/* HL_CB_OP_* */
 	__u32 op;
-	/* Size of CB. Maximum size is 2MB. The minimum size that will be
-	 * allocated, regardless of this parameter's value, is PAGE_SIZE
+	/* Size of CB. Maximum size is HL_MAX_CB_SIZE. The minimum size that
+	 * will be allocated, regardless of this parameter's value, is PAGE_SIZE
 	 */
 	__u32 cb_size;
 	/* Context ID - Currently not in use */
@@ -244,6 +246,8 @@ struct hl_cs_chunk {
 
 #define HL_CS_STATUS_SUCCESS		0
 
+#define HL_MAX_JOBS_PER_CS		512
+
 struct hl_cs_in {
 	/* this holds address of array of hl_cs_chunk for restore phase */
 	__u64 chunks_restore;
@@ -253,9 +257,13 @@ struct hl_cs_in {
 	 * Currently not in use
 	 */
 	__u64 chunks_store;
-	/* Number of chunks in restore phase array */
+	/* Number of chunks in restore phase array. Maximum number is
+	 * HL_MAX_JOBS_PER_CS
+	 */
 	__u32 num_chunks_restore;
-	/* Number of chunks in execution array */
+	/* Number of chunks in execution array. Maximum number is
+	 * HL_MAX_JOBS_PER_CS
+	 */
 	__u32 num_chunks_execute;
 	/* Number of chunks in restore phase array - Currently not in use */
 	__u32 num_chunks_store;
-- 
2.17.1