158 lines
4.6 KiB
C
158 lines
4.6 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c) 2014 Leon Dang <ldang@nahannisys.com>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _USB_EMUL_H_
|
|
#define _USB_EMUL_H_
|
|
|
|
#include <sys/nv.h>
|
|
#include <stdlib.h>
|
|
#include <sys/linker_set.h>
|
|
#include <pthread.h>
|
|
|
|
#define USB_MAX_XFER_BLOCKS 8
|
|
|
|
#define USB_XFER_OUT 0
|
|
#define USB_XFER_IN 1
|
|
|
|
|
|
struct usb_hci;
|
|
struct usb_device_request;
|
|
struct usb_data_xfer;
|
|
struct vm_snapshot_meta;
|
|
|
|
/* Device emulation handlers */
|
|
struct usb_devemu {
|
|
const char *ue_emu; /* name of device emulation */
|
|
int ue_usbver; /* usb version: 2 or 3 */
|
|
int ue_usbspeed; /* usb device speed */
|
|
|
|
/* instance creation */
|
|
void *(*ue_init)(struct usb_hci *hci, nvlist_t *nvl);
|
|
|
|
/* handlers */
|
|
int (*ue_request)(void *sc, struct usb_data_xfer *xfer);
|
|
int (*ue_data)(void *sc, struct usb_data_xfer *xfer, int dir,
|
|
int epctx);
|
|
int (*ue_reset)(void *sc);
|
|
int (*ue_remove)(void *sc);
|
|
int (*ue_stop)(void *sc);
|
|
int (*ue_snapshot)(void *scarg, struct vm_snapshot_meta *meta);
|
|
};
|
|
#define USB_EMUL_SET(x) DATA_SET(usb_emu_set, x)
|
|
|
|
/*
|
|
* USB device events to notify HCI when state changes
|
|
*/
|
|
enum hci_usbev {
|
|
USBDEV_ATTACH,
|
|
USBDEV_RESET,
|
|
USBDEV_STOP,
|
|
USBDEV_REMOVE,
|
|
};
|
|
|
|
/* usb controller, ie xhci, ehci */
|
|
struct usb_hci {
|
|
int (*hci_intr)(struct usb_hci *hci, int epctx);
|
|
int (*hci_event)(struct usb_hci *hci, enum hci_usbev evid,
|
|
void *param);
|
|
void *hci_sc; /* private softc for hci */
|
|
|
|
/* controller managed fields */
|
|
int hci_address;
|
|
int hci_port;
|
|
};
|
|
|
|
/*
|
|
* Each xfer block is mapped to the hci transfer block.
|
|
* On input into the device handler, blen is set to the length of buf.
|
|
* The device handler is to update blen to reflect on the residual size
|
|
* of the buffer, i.e. len(buf) - len(consumed).
|
|
*/
|
|
struct usb_data_xfer_block {
|
|
void *buf; /* IN or OUT pointer */
|
|
int blen; /* in:len(buf), out:len(remaining) */
|
|
int bdone; /* bytes transferred */
|
|
uint32_t processed; /* device processed this + errcode */
|
|
void *hci_data; /* HCI private reference */
|
|
int ccs;
|
|
uint32_t streamid;
|
|
uint64_t trbnext; /* next TRB guest address */
|
|
};
|
|
|
|
struct usb_data_xfer {
|
|
struct usb_data_xfer_block data[USB_MAX_XFER_BLOCKS];
|
|
struct usb_device_request *ureq; /* setup ctl request */
|
|
int ndata; /* # of data items */
|
|
int head;
|
|
int tail;
|
|
pthread_mutex_t mtx;
|
|
};
|
|
|
|
enum USB_ERRCODE {
|
|
USB_ACK,
|
|
USB_NAK,
|
|
USB_STALL,
|
|
USB_NYET,
|
|
USB_ERR,
|
|
USB_SHORT
|
|
};
|
|
|
|
#define USB_DATA_GET_ERRCODE(x) (x)->processed >> 8
|
|
#define USB_DATA_SET_ERRCODE(x,e) do { \
|
|
(x)->processed = ((x)->processed & 0xFF) | (e << 8); \
|
|
} while (0)
|
|
|
|
#define USB_DATA_OK(x,i) ((x)->data[(i)].buf != NULL)
|
|
|
|
#define USB_DATA_XFER_INIT(x) do { \
|
|
memset((x), 0, sizeof(*(x))); \
|
|
pthread_mutex_init(&((x)->mtx), NULL); \
|
|
} while (0)
|
|
|
|
#define USB_DATA_XFER_RESET(x) do { \
|
|
memset((x)->data, 0, sizeof((x)->data)); \
|
|
(x)->ndata = 0; \
|
|
(x)->head = (x)->tail = 0; \
|
|
} while (0)
|
|
|
|
#define USB_DATA_XFER_LOCK(x) do { \
|
|
pthread_mutex_lock(&((x)->mtx)); \
|
|
} while (0)
|
|
|
|
#define USB_DATA_XFER_UNLOCK(x) do { \
|
|
pthread_mutex_unlock(&((x)->mtx)); \
|
|
} while (0)
|
|
|
|
struct usb_devemu *usb_emu_finddev(const char *name);
|
|
|
|
struct usb_data_xfer_block *usb_data_xfer_append(struct usb_data_xfer *xfer,
|
|
void *buf, int blen, void *hci_data, int ccs);
|
|
|
|
|
|
#endif /* _USB_EMUL_H_ */
|