ehci_debug.h

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#ifndef _EHCI_DEBUG_H_
#define _EHCI_DEBUG_H_
 
#include <types.h>
 
void usbdebug_re_enable(uintptr_t ehci_base);
void usbdebug_disable(void);
 
/* Returns 0 on success and sets MMIO base and dbg_offset if EHCI debug
 * capability was found and enabled. Returns non-zero on error.
 */
int ehci_debug_hw_enable(unsigned int *base, unsigned int *dbg_offset);
void ehci_debug_select_port(unsigned int port);
 
#define DBGP_EP_VALID           (1<<0)
#define DBGP_EP_ENABLED         (1<<1)
#define DBGP_EP_BUSY            (1<<2)
#define DBGP_EP_NOT_PRESENT     (1<<3)
#define DBGP_EP_STATMASK        (DBGP_EP_VALID | DBGP_EP_ENABLED)
 
#define DBGP_MAX_ENDPOINTS      4
#define DBGP_SETUP_EP0          0       /* Compulsory endpoint 0. */
#define DBGP_CONSOLE_EPOUT      1
#define DBGP_CONSOLE_EPIN       2
 
struct ehci_dbg_port;
 
struct dbgp_pipe
{
        u8 devnum;
        u8 endpoint;
        u8 pid;
        u8 status;
        u16 timeout;
 
        u8 bufidx;
        u8 buflen;
        char buf[8];
} __packed;
 
void dbgp_put(struct dbgp_pipe *pipe);
int dbgp_try_get(struct dbgp_pipe *pipe);
 
struct dbgp_pipe *dbgp_console_output(void);
struct dbgp_pipe *dbgp_console_input(void);
int dbgp_ep_is_active(struct dbgp_pipe *pipe);
int dbgp_bulk_write_x(struct dbgp_pipe *pipe, const char *bytes, int size);
int dbgp_bulk_read_x(struct dbgp_pipe *pipe, void *data, int size);
 
int dbgp_control_msg(struct ehci_dbg_port *ehci_debug, unsigned int devnum,
        int requesttype, int request, int value, int index, void *data, int size);
void dbgp_mdelay(int ms);
 
int dbgp_probe_gadget(struct ehci_dbg_port *ehci_debug, struct dbgp_pipe *pipe);
 
#endif /* _EHCI_DEBUG_H_ */