linux/drivers/scsi/snic/vnic_wq.h

/* SPDX-License-Identifier: GPL-2.0-only */
/* Copyright 2014 Cisco Systems, Inc.  All rights reserved. */

#ifndef _VNIC_WQ_H_
#define _VNIC_WQ_H_

#include <linux/pci.h>
#include "vnic_dev.h"
#include "vnic_cq.h"

/* Work queue control */
struct vnic_wq_ctrl { … };

struct vnic_wq_buf { … };

/* Break the vnic_wq_buf allocations into blocks of 64 entries */
#define VNIC_WQ_BUF_MIN_BLK_ENTRIES …
#define VNIC_WQ_BUF_DFLT_BLK_ENTRIES …
#define VNIC_WQ_BUF_BLK_ENTRIES(entries) …
#define VNIC_WQ_BUF_BLK_SZ …
#define VNIC_WQ_BUF_BLKS_NEEDED(entries) …
#define VNIC_WQ_BUF_BLKS_NEEDED(entries) …
#define VNIC_WQ_BUF_BLKS_MAX …

struct vnic_wq { … };

static inline unsigned int svnic_wq_desc_avail(struct vnic_wq *wq)
{ … }

static inline unsigned int svnic_wq_desc_used(struct vnic_wq *wq)
{ … }

static inline void *svnic_wq_next_desc(struct vnic_wq *wq)
{ … }

static inline void svnic_wq_post(struct vnic_wq *wq,
	void *os_buf, dma_addr_t dma_addr,
	unsigned int len, int sop, int eop)
{ … }

static inline void svnic_wq_service(struct vnic_wq *wq,
	struct cq_desc *cq_desc, u16 completed_index,
	void (*buf_service)(struct vnic_wq *wq,
	struct cq_desc *cq_desc, struct vnic_wq_buf *buf, void *opaque),
	void *opaque)
{ … }

void svnic_wq_free(struct vnic_wq *wq);
int svnic_wq_alloc(struct vnic_dev *vdev, struct vnic_wq *wq,
	unsigned int index, unsigned int desc_count, unsigned int desc_size);
int vnic_wq_devcmd2_alloc(struct vnic_dev *vdev, struct vnic_wq *wq,
		unsigned int desc_count, unsigned int desc_size);
void vnic_wq_init_start(struct vnic_wq *wq, unsigned int cq_index,
		unsigned int fetch_index, unsigned int post_index,
		unsigned int error_interrupt_enable,
		unsigned int error_interrupt_offset);

void svnic_wq_init(struct vnic_wq *wq, unsigned int cq_index,
	unsigned int error_interrupt_enable,
	unsigned int error_interrupt_offset);
unsigned int svnic_wq_error_status(struct vnic_wq *wq);
void svnic_wq_enable(struct vnic_wq *wq);
int svnic_wq_disable(struct vnic_wq *wq);
void svnic_wq_clean(struct vnic_wq *wq,
	void (*buf_clean)(struct vnic_wq *wq, struct vnic_wq_buf *buf));
#endif /* _VNIC_WQ_H_ */