1/* SPDX-License-Identifier: GPL-2.0 */
  2#ifndef _ISP1760_HCD_H_
  3#define _ISP1760_HCD_H_
  4
  5#include <linux/spinlock.h>
  6#include <linux/regmap.h>
  7
  8#include "isp1760-regs.h"
  9
 10struct isp1760_qh;
 11struct isp1760_qtd;
 12struct resource;
 13struct usb_hcd;
 14
 15struct isp1760_slotinfo {
 16	struct isp1760_qh *qh;
 17	struct isp1760_qtd *qtd;
 18	unsigned long timestamp;
 19};
 20
 21/* chip memory management */
 22#define ISP176x_BLOCK_MAX (32 + 20 + 4)
 23#define ISP176x_BLOCK_NUM 3
 24
 25struct isp1760_memory_layout {
 26	unsigned int blocks[ISP176x_BLOCK_NUM];
 27	unsigned int blocks_size[ISP176x_BLOCK_NUM];
 28
 29	unsigned int slot_num;
 30	unsigned int payload_blocks;
 31	unsigned int payload_area_size;
 32};
 33
 34struct isp1760_memory_chunk {
 35	unsigned int start;
 36	unsigned int size;
 37	unsigned int free;
 38};
 39
 40enum isp1760_queue_head_types {
 41	QH_CONTROL,
 42	QH_BULK,
 43	QH_INTERRUPT,
 44	QH_END
 45};
 46
 47struct isp1760_hcd {
 48	struct usb_hcd		*hcd;
 49
 50	void __iomem		*base;
 51
 52	struct regmap		*regs;
 53	struct regmap_field	*fields[HC_FIELD_MAX];
 54
 55	bool			is_isp1763;
 56	const struct isp1760_memory_layout	*memory_layout;
 57
 58	spinlock_t		lock;
 59	struct isp1760_slotinfo	*atl_slots;
 60	int			atl_done_map;
 61	struct isp1760_slotinfo	*int_slots;
 62	int			int_done_map;
 63	struct isp1760_memory_chunk memory_pool[ISP176x_BLOCK_MAX];
 64	struct list_head	qh_list[QH_END];
 65
 66	/* periodic schedule support */
 67#define	DEFAULT_I_TDPS		1024
 68	unsigned		periodic_size;
 69	unsigned		i_thresh;
 70	unsigned long		reset_done;
 71	unsigned long		next_statechange;
 72};
 73
 74#ifdef CONFIG_USB_ISP1760_HCD
 75int isp1760_hcd_register(struct isp1760_hcd *priv, struct resource *mem,
 76			 int irq, unsigned long irqflags, struct device *dev);
 77void isp1760_hcd_unregister(struct isp1760_hcd *priv);
 78
 79int isp1760_init_kmem_once(void);
 80void isp1760_deinit_kmem_cache(void);
 81#else
 82static inline int isp1760_hcd_register(struct isp1760_hcd *priv,
 83				       struct resource *mem,
 84				       int irq, unsigned long irqflags,
 85				       struct device *dev)
 86{
 87	return 0;
 88}
 89
 90static inline void isp1760_hcd_unregister(struct isp1760_hcd *priv)
 91{
 92}
 93
 94static inline int isp1760_init_kmem_once(void)
 95{
 96	return 0;
 97}
 98
 99static inline void isp1760_deinit_kmem_cache(void)
100{
101}
102#endif
103
104#endif /* _ISP1760_HCD_H_ */