numam-dpdk/drivers/dma/dpaa2/dpaa2_qdma.h

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright 2018-2022 NXP
 */

#ifndef _DPAA2_QDMA_H_
#define _DPAA2_QDMA_H_

#define DPAA2_QDMA_MAX_DESC		1024
#define DPAA2_QDMA_MIN_DESC		1
#define DPAA2_QDMA_MAX_VHANS		64

#define DPAA2_QDMA_VQ_FD_SHORT_FORMAT		(1ULL << 0)
#define DPAA2_QDMA_VQ_FD_SG_FORMAT		(1ULL << 1)
#define DPAA2_QDMA_VQ_NO_RESPONSE		(1ULL << 2)

#define DPAA2_QDMA_MAX_FLE 3
#define DPAA2_QDMA_MAX_SDD 2

#define DPAA2_QDMA_MAX_SG_NB 64

#define DPAA2_DPDMAI_MAX_QUEUES	1

/** FLE single job pool size: job pointer(uint64_t) +
 * 3 Frame list + 2 source/destination descriptor.
 */
#define QDMA_FLE_SINGLE_POOL_SIZE (sizeof(uint64_t) + \
			sizeof(struct qbman_fle) * DPAA2_QDMA_MAX_FLE + \
			sizeof(struct qdma_sdd) * DPAA2_QDMA_MAX_SDD)

/** FLE sg jobs pool size: job number(uint64_t) +
 * 3 Frame list + 2 source/destination descriptor  +
 * 64 (src + dst) sg entries + 64 jobs pointers.
 */
#define QDMA_FLE_SG_POOL_SIZE (sizeof(uint64_t) + \
		sizeof(struct qbman_fle) * DPAA2_QDMA_MAX_FLE + \
		sizeof(struct qdma_sdd) * DPAA2_QDMA_MAX_SDD + \
		sizeof(struct qdma_sg_entry) * (DPAA2_QDMA_MAX_SG_NB * 2) + \
		sizeof(struct rte_qdma_job *) * DPAA2_QDMA_MAX_SG_NB)

#define QDMA_FLE_JOB_NB_OFFSET 0

#define QDMA_FLE_SINGLE_JOB_OFFSET 0

#define QDMA_FLE_FLE_OFFSET \
		(QDMA_FLE_JOB_NB_OFFSET + sizeof(uint64_t))

#define QDMA_FLE_SDD_OFFSET \
		(QDMA_FLE_FLE_OFFSET + \
		sizeof(struct qbman_fle) * DPAA2_QDMA_MAX_FLE)

#define QDMA_FLE_SG_ENTRY_OFFSET \
		(QDMA_FLE_SDD_OFFSET + \
		sizeof(struct qdma_sdd) * DPAA2_QDMA_MAX_SDD)

#define QDMA_FLE_SG_JOBS_OFFSET \
		(QDMA_FLE_SG_ENTRY_OFFSET + \
		sizeof(struct qdma_sg_entry) * DPAA2_QDMA_MAX_SG_NB * 2)

/** FLE pool cache size */
#define QDMA_FLE_CACHE_SIZE(_num) (_num/(RTE_MAX_LCORE * 2))

/** Notification by FQD_CTX[fqid] */
#define QDMA_SER_CTX (1 << 8)
#define DPAA2_RBP_MEM_RW            0x0
/**
 * Source descriptor command read transaction type for RBP=0:
 * coherent copy of cacheable memory
 */
#define DPAA2_COHERENT_NO_ALLOCATE_CACHE	0xb
#define DPAA2_LX2_COHERENT_NO_ALLOCATE_CACHE	0x7
/**
 * Destination descriptor command write transaction type for RBP=0:
 * coherent copy of cacheable memory
 */
#define DPAA2_COHERENT_ALLOCATE_CACHE		0x6
#define DPAA2_LX2_COHERENT_ALLOCATE_CACHE	0xb

/** Maximum possible H/W Queues on each core */
#define MAX_HW_QUEUE_PER_CORE		64

#define QDMA_RBP_UPPER_ADDRESS_MASK (0xfff0000000000)

/** Source/Destination Descriptor */
struct qdma_sdd {
	uint32_t rsv;
	/** Stride configuration */
	uint32_t stride;
	/** Route-by-port command */
	union {
		uint32_t rbpcmd;
		struct rbpcmd_st {
			uint32_t vfid:6;
			uint32_t rsv4:2;
			uint32_t pfid:1;
			uint32_t rsv3:7;
			uint32_t attr:3;
			uint32_t rsv2:1;
			uint32_t at:2;
			uint32_t vfa:1;
			uint32_t ca:1;
			uint32_t tc:3;
			uint32_t rsv1:5;
		} rbpcmd_simple;
	};
	union {
		uint32_t cmd;
		struct rcmd_simple {
			uint32_t portid:4;
			uint32_t rsv1:14;
			uint32_t rbp:1;
			uint32_t ssen:1;
			uint32_t rthrotl:4;
			uint32_t sqos:3;
			uint32_t ns:1;
			uint32_t rdtype:4;
		} read_cmd;
		struct wcmd_simple {
			uint32_t portid:4;
			uint32_t rsv3:10;
			uint32_t rsv2:2;
			uint32_t lwc:2;
			uint32_t rbp:1;
			uint32_t dsen:1;
			uint32_t rsv1:4;
			uint32_t dqos:3;
			uint32_t ns:1;
			uint32_t wrttype:4;
		} write_cmd;
	};
} __rte_packed;

#define QDMA_SG_FMT_SDB	0x0 /* single data buffer */
#define QDMA_SG_FMT_FDS	0x1 /* frame data section */
#define QDMA_SG_FMT_SGTE	0x2 /* SGT extension */
#define QDMA_SG_SL_SHORT	0x1 /* short length */
#define QDMA_SG_SL_LONG	0x0 /* long length */
#define QDMA_SG_F	0x1 /* last sg entry */
#define QDMA_SG_BMT_ENABLE 0x1
#define QDMA_SG_BMT_DISABLE 0x0

struct qdma_sg_entry {
	uint32_t addr_lo;		/* address 0:31 */
	uint32_t addr_hi:17;	/* address 32:48 */
	uint32_t rsv:15;
	union {
		uint32_t data_len_sl0;	/* SL=0, the long format */
		struct {
			uint32_t len:17;	/* SL=1, the short format */
			uint32_t reserve:3;
			uint32_t sf:1;
			uint32_t sr:1;
			uint32_t size:10;	/* buff size */
		} data_len_sl1;
	} data_len;					/* AVAIL_LENGTH */
	union {
		uint32_t ctrl_fields;
		struct {
			uint32_t bpid:14;
			uint32_t ivp:1;
			uint32_t bmt:1;
			uint32_t offset:12;
			uint32_t fmt:2;
			uint32_t sl:1;
			uint32_t f:1;
		} ctrl;
	};
} __rte_packed;

/** Represents a DPDMAI device */
struct dpaa2_dpdmai_dev {
	/** Pointer to Next device instance */
	TAILQ_ENTRY(dpaa2_qdma_device) next;
	/** handle to DPDMAI object */
	struct fsl_mc_io dpdmai;
	/** HW ID for DPDMAI object */
	uint32_t dpdmai_id;
	/** Tocken of this device */
	uint16_t token;
	/** Number of queue in this DPDMAI device */
	uint8_t num_queues;
	/** RX queues */
	struct dpaa2_queue rx_queue[DPAA2_DPDMAI_MAX_QUEUES];
	/** TX queues */
	struct dpaa2_queue tx_queue[DPAA2_DPDMAI_MAX_QUEUES];
	struct qdma_device *qdma_dev;
};

struct qdma_virt_queue;

typedef uint16_t (qdma_get_job_t)(struct qdma_virt_queue *qdma_vq,
					const struct qbman_fd *fd,
					struct rte_dpaa2_qdma_job **job,
					uint16_t *nb_jobs);
typedef int (qdma_set_fd_t)(struct qdma_virt_queue *qdma_vq,
					struct qbman_fd *fd,
					struct rte_dpaa2_qdma_job **job,
					uint16_t nb_jobs);

typedef int (qdma_dequeue_multijob_t)(
				struct qdma_virt_queue *qdma_vq,
				uint16_t *vq_id,
				struct rte_dpaa2_qdma_job **job,
				uint16_t nb_jobs);

typedef int (qdma_enqueue_multijob_t)(
			struct qdma_virt_queue *qdma_vq,
			struct rte_dpaa2_qdma_job **job,
			uint16_t nb_jobs);

/** Represents a QDMA virtual queue */
struct qdma_virt_queue {
	/** Status ring of the virtual queue */
	struct rte_ring *status_ring;
	/** Associated hw queue */
	struct dpaa2_dpdmai_dev *dpdmai_dev;
	/** FLE pool for the queue */
	struct rte_mempool *fle_pool;
	/** Route by port */
	struct rte_dpaa2_qdma_rbp rbp;
	/** States if this vq is in use or not */
	uint8_t in_use;
	/** States if this vq has exclusively associated hw queue */
	uint8_t exclusive_hw_queue;
	/** Number of descriptor for the virtual DMA channel */
	uint16_t nb_desc;
	/* Total number of enqueues on this VQ */
	uint64_t num_enqueues;
	/* Total number of dequeues from this VQ */
	uint64_t num_dequeues;

	uint16_t vq_id;
	uint32_t flags;

	struct rte_dpaa2_qdma_job *job_list[DPAA2_QDMA_MAX_DESC];
	struct rte_mempool *job_pool;
	int num_valid_jobs;

	struct rte_dma_stats stats;

	qdma_set_fd_t *set_fd;
	qdma_get_job_t *get_job;

	qdma_dequeue_multijob_t *dequeue_job;
	qdma_enqueue_multijob_t *enqueue_job;
};

/** Represents a QDMA device. */
struct qdma_device {
	/** VQ's of this device */
	struct qdma_virt_queue *vqs;
	/** Total number of VQ's */
	uint16_t num_vqs;
	/** Device state - started or stopped */
	uint8_t state;
};

#endif /* _DPAA2_QDMA_H_ */