habanalabs: add h/w queues module

This patch adds the H/W queues module and the code to initialize Goya's various compute and DMA engines and their queues. Goya has 5 DMA channels, 8 TPC engines and a single MME engine. For each channel/engine, there is a H/W queue logic which is used to pass commands from the user to the H/W. That logic is called QMAN. There are two types of QMANs: external and internal. The DMA QMANs are considered external while the TPC and MME QMANs are considered internal. For each external queue there is a completion queue, which is located on the Host memory. The differences between external and internal QMANs are: 1. The location of the queue's memory. External QMANs are located on the Host memory while internal QMANs are located on the on-chip memory. 2. The external QMAN write an entry to a completion queue and sends an MSI-X interrupt upon completion of a command buffer that was given to it. The internal QMAN doesn't do that.

Oded Gabbay committed 7 years ago

Commit 9494a8d1 parent 839c48013 files · +2915 −116Browse files

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include/uapi/misc/habanalabs.h+29−0

@@ -17,6 +17,35 @@ · 16 unmodified lines
17	*/	17	*/
18	#define GOYA_KMD_SRAM_RESERVED_SIZE_FROM_START 0x8000 /* 32KB */	18	#define GOYA_KMD_SRAM_RESERVED_SIZE_FROM_START 0x8000 /* 32KB */
19		19
		20	/*
		21	* Queue Numbering
		22	*
		23	* The external queues (DMA channels + CPU) MUST be before the internal queues
		24	* and each group (DMA channels + CPU and internal) must be contiguous inside
		25	* itself but there can be a gap between the two groups (although not
		26	* recommended)
		27	*/
		28
		29	enum goya_queue_id {
		30	GOYA_QUEUE_ID_DMA_0 = 0,
		31	GOYA_QUEUE_ID_DMA_1,
		32	GOYA_QUEUE_ID_DMA_2,
		33	GOYA_QUEUE_ID_DMA_3,
		34	GOYA_QUEUE_ID_DMA_4,
		35	GOYA_QUEUE_ID_CPU_PQ,
		36	GOYA_QUEUE_ID_MME,
		37	GOYA_QUEUE_ID_TPC0,
		38	GOYA_QUEUE_ID_TPC1,
		39	GOYA_QUEUE_ID_TPC2,
		40	GOYA_QUEUE_ID_TPC3,
		41	GOYA_QUEUE_ID_TPC4,
		42	GOYA_QUEUE_ID_TPC5,
		43	GOYA_QUEUE_ID_TPC6,
		44	GOYA_QUEUE_ID_TPC7,
		45	GOYA_QUEUE_ID_SIZE
		46	};
		47
		48
20	/* Opcode to create a new command buffer */	49	/* Opcode to create a new command buffer */
21	#define HL_CB_OP_CREATE 0	50	#define HL_CB_OP_CREATE 0
22	/* Opcode to destroy previously created command buffer */	51	/* Opcode to destroy previously created command buffer */