1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ISP1760_HCD_H_
3#define _ISP1760_HCD_H_
4
5#include <linux/spinlock.h>
6
7struct isp1760_qh;
8struct isp1760_qtd;
9struct resource;
10struct usb_hcd;
11
12/*
13 * 60kb divided in:
14 * - 32 blocks @ 256  bytes
15 * - 20 blocks @ 1024 bytes
16 * -  4 blocks @ 8192 bytes
17 */
18
19#define BLOCK_1_NUM 32
20#define BLOCK_2_NUM 20
21#define BLOCK_3_NUM 4
22
23#define BLOCK_1_SIZE 256
24#define BLOCK_2_SIZE 1024
25#define BLOCK_3_SIZE 8192
26#define BLOCKS (BLOCK_1_NUM + BLOCK_2_NUM + BLOCK_3_NUM)
27#define MAX_PAYLOAD_SIZE BLOCK_3_SIZE
28#define PAYLOAD_AREA_SIZE 0xf000
29
30struct isp1760_slotinfo {
31	struct isp1760_qh *qh;
32	struct isp1760_qtd *qtd;
33	unsigned long timestamp;
34};
35
36/* chip memory management */
37struct isp1760_memory_chunk {
38	unsigned int start;
39	unsigned int size;
40	unsigned int free;
41};
42
43enum isp1760_queue_head_types {
44	QH_CONTROL,
45	QH_BULK,
46	QH_INTERRUPT,
47	QH_END
48};
49
50struct isp1760_hcd {
51#ifdef CONFIG_USB_ISP1760_HCD
52	struct usb_hcd		*hcd;
53
54	u32 hcs_params;
55	spinlock_t		lock;
56	struct isp1760_slotinfo	atl_slots[32];
57	int			atl_done_map;
58	struct isp1760_slotinfo	int_slots[32];
59	int			int_done_map;
60	struct isp1760_memory_chunk memory_pool[BLOCKS];
61	struct list_head	qh_list[QH_END];
62
63	/* periodic schedule support */
64#define	DEFAULT_I_TDPS		1024
65	unsigned		periodic_size;
66	unsigned		i_thresh;
67	unsigned long		reset_done;
68	unsigned long		next_statechange;
69#endif
70};
71
72#ifdef CONFIG_USB_ISP1760_HCD
73int isp1760_hcd_register(struct isp1760_hcd *priv, void __iomem *regs,
74			 struct resource *mem, int irq, unsigned long irqflags,
75			 struct device *dev);
76void isp1760_hcd_unregister(struct isp1760_hcd *priv);
77
78int isp1760_init_kmem_once(void);
79void isp1760_deinit_kmem_cache(void);
80#else
81static inline int isp1760_hcd_register(struct isp1760_hcd *priv,
82				       void __iomem *regs, struct resource *mem,
83				       int irq, unsigned long irqflags,
84				       struct device *dev)
85{
86	return 0;
87}
88
89static inline void isp1760_hcd_unregister(struct isp1760_hcd *priv)
90{
91}
92
93static inline int isp1760_init_kmem_once(void)
94{
95	return 0;
96}
97
98static inline void isp1760_deinit_kmem_cache(void)
99{
100}
101#endif
102
103#endif /* _ISP1760_HCD_H_ */
104