/* SPDX-License-Identifier: GPL-2.0-only */
/* Copyright(c) 2023 Advanced Micro Devices, Inc */

#ifndef _VDPA_DEV_H_
#define _VDPA_DEV_H_

#include <linux/pci.h>
#include <linux/vdpa.h>

struct pds_vdpa_vq_info {
	bool ready;
	u64 desc_addr;
	u64 avail_addr;
	u64 used_addr;
	u32 q_len;
	u16 qid;
	int irq;
	char irq_name[32];

	void __iomem *notify;
	dma_addr_t notify_pa;

	u64 doorbell;
	u16 avail_idx;
	u16 used_idx;

	struct vdpa_callback event_cb;
	struct pds_vdpa_device *pdsv;
};

#define PDS_VDPA_MAX_QUEUES	65
#define PDS_VDPA_MAX_QLEN	32768
struct pds_vdpa_device {
	struct vdpa_device vdpa_dev;
	struct pds_vdpa_aux *vdpa_aux;

	struct pds_vdpa_vq_info vqs[PDS_VDPA_MAX_QUEUES];
	u64 supported_features;		/* supported device features */
	u64 negotiated_features;	/* negotiated features */
	u8 vdpa_index;			/* rsvd for future subdevice use */
	u8 num_vqs;			/* num vqs in use */
	u8 mac[ETH_ALEN];		/* mac selected when the device was added */
	struct vdpa_callback config_cb;
	struct notifier_block nb;
};

#define PDS_VDPA_PACKED_INVERT_IDX	0x8000

void pds_vdpa_release_irqs(struct pds_vdpa_device *pdsv);
int pds_vdpa_get_mgmt_info(struct pds_vdpa_aux *vdpa_aux);
#endif /* _VDPA_DEV_H_ */
