1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ISP1760_HCD_H_
3 #define _ISP1760_HCD_H_
4 
5 #include <linux/spinlock.h>
6 
7 struct isp1760_qh;
8 struct isp1760_qtd;
9 struct resource;
10 struct 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 
30 struct isp1760_slotinfo {
31 	struct isp1760_qh *qh;
32 	struct isp1760_qtd *qtd;
33 	unsigned long timestamp;
34 };
35 
36 /* chip memory management */
37 struct isp1760_memory_chunk {
38 	unsigned int start;
39 	unsigned int size;
40 	unsigned int free;
41 };
42 
43 enum isp1760_queue_head_types {
44 	QH_CONTROL,
45 	QH_BULK,
46 	QH_INTERRUPT,
47 	QH_END
48 };
49 
50 struct 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
73 int isp1760_hcd_register(struct isp1760_hcd *priv, void __iomem *regs,
74 			 struct resource *mem, int irq, unsigned long irqflags,
75 			 struct device *dev);
76 void isp1760_hcd_unregister(struct isp1760_hcd *priv);
77 
78 int isp1760_init_kmem_once(void);
79 void isp1760_deinit_kmem_cache(void);
80 #else
81 static 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 
89 static inline void isp1760_hcd_unregister(struct isp1760_hcd *priv)
90 {
91 }
92 
93 static inline int isp1760_init_kmem_once(void)
94 {
95 	return 0;
96 }
97 
98 static inline void isp1760_deinit_kmem_cache(void)
99 {
100 }
101 #endif
102 
103 #endif /* _ISP1760_HCD_H_ */
104