drivers/usb/isp1760/isp1760-hcd.h

   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
  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
  90 static inline void isp1760_hcd_unregister(struct isp1760_hcd *priv)
  91 {
  92 }
  93
  94 static inline int isp1760_init_kmem_once(void)
  95 {
  96         return 0;
  97 }
  98
  99 static inline void isp1760_deinit_kmem_cache(void)
 100 {
 101 }
 102 #endif
 103
 104 #endif /* _ISP1760_HCD_H_ */