/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ISP1760_HCD_H_
#define _ISP1760_HCD_H_

#include <linux/spinlock.h>
#include <linux/regmap.h>

#include "isp1760-regs.h"

struct isp1760_qh;
struct isp1760_qtd;
struct resource;
struct usb_hcd;

struct isp1760_slotinfo {
        struct isp1760_qh *qh;
        struct isp1760_qtd *qtd;
        unsigned long timestamp;
};

/* chip memory management */
#define ISP176x_BLOCK_MAX (32 + 20 + 4)
#define ISP176x_BLOCK_NUM 3

struct isp1760_memory_layout {
        unsigned int blocks[ISP176x_BLOCK_NUM];
        unsigned int blocks_size[ISP176x_BLOCK_NUM];

        unsigned int slot_num;
        unsigned int payload_blocks;
        unsigned int payload_area_size;
};

struct isp1760_memory_chunk {
        unsigned int start;
        unsigned int size;
        unsigned int free;
};

enum isp1760_queue_head_types {
        QH_CONTROL,
        QH_BULK,
        QH_INTERRUPT,
        QH_END
};

struct isp1760_hcd {
        struct usb_hcd          *hcd;

        void __iomem            *base;

        struct regmap           *regs;
        struct regmap_field     *fields[HC_FIELD_MAX];

        bool                    is_isp1763;
        const struct isp1760_memory_layout      *memory_layout;

        spinlock_t              lock;
        struct isp1760_slotinfo *atl_slots;
        int                     atl_done_map;
        struct isp1760_slotinfo *int_slots;
        int                     int_done_map;
        struct isp1760_memory_chunk memory_pool[ISP176x_BLOCK_MAX];
        struct list_head        qh_list[QH_END];

        /* periodic schedule support */
#define DEFAULT_I_TDPS          1024
        unsigned                periodic_size;
        unsigned                i_thresh;
        unsigned long           reset_done;
        unsigned long           next_statechange;
};

#ifdef CONFIG_USB_ISP1760_HCD
int isp1760_hcd_register(struct isp1760_hcd *priv, struct resource *mem,
                         int irq, unsigned long irqflags, struct device *dev);
void isp1760_hcd_unregister(struct isp1760_hcd *priv);

int isp1760_init_kmem_once(void);
void isp1760_deinit_kmem_cache(void);
#else
static inline int isp1760_hcd_register(struct isp1760_hcd *priv,
                                       struct resource *mem,
                                       int irq, unsigned long irqflags,
                                       struct device *dev)
{
        return 0;
}

static inline void isp1760_hcd_unregister(struct isp1760_hcd *priv)
{
}

static inline int isp1760_init_kmem_once(void)
{
        return 0;
}

static inline void isp1760_deinit_kmem_cache(void)
{
}
#endif

#endif /* _ISP1760_HCD_H_ */