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
10 struct isp1760_qh;
11 struct isp1760_qtd;
12 struct resource;
13 struct usb_hcd;
14
15 struct 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
25 struct 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
34 struct isp1760_memory_chunk {
35 unsigned int start;
36 unsigned int size;
37 unsigned int free;
38 };
39
40 enum isp1760_queue_head_types {
41 QH_CONTROL,
42 QH_BULK,
43 QH_INTERRUPT,
44 QH_END
45 };
46
47 struct 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
75 int isp1760_hcd_register(struct isp1760_hcd *priv, struct resource *mem,
76 int irq, unsigned long irqflags, struct device *dev);
77 void isp1760_hcd_unregister(struct isp1760_hcd *priv);
78
79 int isp1760_init_kmem_once(void);
80 void isp1760_deinit_kmem_cache(void);
81 #else
isp1760_hcd_register(struct isp1760_hcd * priv,struct resource * mem,int irq,unsigned long irqflags,struct device * dev)82 static 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
isp1760_hcd_unregister(struct isp1760_hcd * priv)90 static inline void isp1760_hcd_unregister(struct isp1760_hcd *priv)
91 {
92 }
93
isp1760_init_kmem_once(void)94 static inline int isp1760_init_kmem_once(void)
95 {
96 return 0;
97 }
98
isp1760_deinit_kmem_cache(void)99 static inline void isp1760_deinit_kmem_cache(void)
100 {
101 }
102 #endif
103
104 #endif /* _ISP1760_HCD_H_ */
105