src/usb-ohci.h

#ifndef __USB_OHCI_H
#define __USB_OHCI_H

// usb-ohci.c
struct usb_s;
int ohci_init(struct usb_s *cntl);
int ohci_control(u32 endp, int dir, const void *cmd, int cmdsize
                 , void *data, int datasize);
struct usb_pipe *ohci_alloc_intr_pipe(u32 endp, int period);
int ohci_poll_intr(struct usb_pipe *pipe, void *data);


/****************************************************************
 * ohci structs and flags
 ****************************************************************/

struct ohci_ed {
    u32 hwINFO;
    u32 hwTailP;
    u32 hwHeadP;
    u32 hwNextED;
} PACKED;

#define ED_ISO          (1 << 15)
#define ED_SKIP         (1 << 14)
#define ED_LOWSPEED     (1 << 13)
#define ED_OUT          (0x01 << 11)
#define ED_IN           (0x02 << 11)

#define ED_C            (0x02)
#define ED_H            (0x01)

struct ohci_td {
    u32 hwINFO;
    u32 hwCBP;
    u32 hwNextTD;
    u32 hwBE;
} PACKED;

#define TD_CC       0xf0000000
#define TD_CC_GET(td_p) ((td_p >>28) & 0x0f)
#define TD_DI       0x00E00000

#define TD_DONE     0x00020000
#define TD_ISO      0x00010000

#define TD_EC       0x0C000000
#define TD_T        0x03000000
#define TD_T_DATA0  0x02000000
#define TD_T_DATA1  0x03000000
#define TD_T_TOGGLE 0x00000000
#define TD_DP       0x00180000
#define TD_DP_SETUP 0x00000000
#define TD_DP_IN    0x00100000
#define TD_DP_OUT   0x00080000

#define TD_R        0x00040000

struct ohci_hcca {
    u32  int_table[32];
    u32  frame_no;
    u32  done_head;
    u8   reserved[120];
} PACKED;

struct ohci_regs {
    u32  revision;
    u32  control;
    u32  cmdstatus;
    u32  intrstatus;
    u32  intrenable;
    u32  intrdisable;

    u32  hcca;
    u32  ed_periodcurrent;
    u32  ed_controlhead;
    u32  ed_controlcurrent;
    u32  ed_bulkhead;
    u32  ed_bulkcurrent;
    u32  donehead;

    u32  fminterval;
    u32  fmremaining;
    u32  fmnumber;
    u32  periodicstart;
    u32  lsthresh;

    u32  roothub_a;
    u32  roothub_b;
    u32  roothub_status;
    u32  roothub_portstatus[15];
} PACKED;

#define OHCI_CTRL_CBSR  (3 << 0)
#define OHCI_CTRL_PLE   (1 << 2)
#define OHCI_CTRL_CLE   (1 << 4)
#define OHCI_CTRL_HCFS  (3 << 6)
#       define OHCI_USB_RESET   (0 << 6)
#       define OHCI_USB_OPER    (2 << 6)
#define OHCI_CTRL_RWC   (1 << 9)

#define OHCI_HCR        (1 << 0)
#define OHCI_CLF        (1 << 1)

#define OHCI_INTR_MIE   (1 << 31)

#define RH_PS_CCS            0x00000001
#define RH_PS_PES            0x00000002
#define RH_PS_PSS            0x00000004
#define RH_PS_POCI           0x00000008
#define RH_PS_PRS            0x00000010
#define RH_PS_PPS            0x00000100
#define RH_PS_LSDA           0x00000200
#define RH_PS_CSC            0x00010000
#define RH_PS_PESC           0x00020000
#define RH_PS_PSSC           0x00040000
#define RH_PS_OCIC           0x00080000
#define RH_PS_PRSC           0x00100000

#define RH_HS_LPS            0x00000001
#define RH_HS_OCI            0x00000002
#define RH_HS_DRWE           0x00008000
#define RH_HS_LPSC           0x00010000
#define RH_HS_OCIC           0x00020000
#define RH_HS_CRWE           0x80000000

#define RH_B_DR         0x0000ffff
#define RH_B_PPCM       0xffff0000

#define RH_A_NDP        (0xff << 0)
#define RH_A_PSM        (1 << 8)
#define RH_A_NPS        (1 << 9)
#define RH_A_DT         (1 << 10)
#define RH_A_OCPM       (1 << 11)
#define RH_A_NOCP       (1 << 12)
#define RH_A_POTPGT     (0xff << 24)

#endif // usb-ohci.h