/* 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_ */