FreeBSD/Linux Kernel Cross Reference
sys/dev/usb/usb_compat_linux.h

     /* $FreeBSD: releng/8.3/sys/dev/usb/usb_compat_linux.h 200323 2009-12-09 22:32:36Z thompsa $ */
     /*-
      * Copyright (c) 2007 Luigi Rizzo - Universita` di Pisa. All rights reserved.
      * Copyright (c) 2007 Hans Petter Selasky. 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_COMPAT_LINUX_H
    #define _USB_COMPAT_LINUX_H
    
    struct usb_device;
    struct usb_interface;
    struct usb_driver;
    struct urb;
    
    typedef void *pm_message_t;
    typedef void (usb_complete_t)(struct urb *);
    
    #define USB_MAX_FULL_SPEED_ISOC_FRAMES (60 * 1)
    #define USB_MAX_HIGH_SPEED_ISOC_FRAMES (60 * 8)
    
    #define USB_DEVICE_ID_MATCH_DEVICE \
            (USB_DEVICE_ID_MATCH_VENDOR | USB_DEVICE_ID_MATCH_PRODUCT)
    
    #define USB_DEVICE(vend,prod) \
            .match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = (vend), \
            .idProduct = (prod)
    
    /* The "usb_driver" structure holds the Linux USB device driver
     * callbacks, and a pointer to device ID's which this entry should
     * match against. Usually this entry is exposed to the USB emulation
     * layer using the "USB_DRIVER_EXPORT()" macro, which is defined
     * below.
     */
    struct usb_driver {
            const char *name;
    
            int     (*probe) (struct usb_interface *intf,
                    const   struct usb_device_id *id);
    
            void    (*disconnect) (struct usb_interface *intf);
    
            int     (*ioctl) (struct usb_interface *intf, unsigned int code,
                    void  *buf);
    
            int     (*suspend) (struct usb_interface *intf, pm_message_t message);
            int     (*resume) (struct usb_interface *intf);
    
            const struct usb_device_id *id_table;
    
            void    (*shutdown) (struct usb_interface *intf);
    
            LIST_ENTRY(usb_driver) linux_driver_list;
    };
    
    #define USB_DRIVER_EXPORT(id,p_usb_drv) \
      SYSINIT(id,SI_SUB_KLD,SI_ORDER_FIRST,usb_linux_register,p_usb_drv); \
      SYSUNINIT(id,SI_SUB_KLD,SI_ORDER_ANY,usb_linux_deregister,p_usb_drv)
    
    #define USB_DT_ENDPOINT_SIZE            7
    #define USB_DT_ENDPOINT_AUDIO_SIZE      9
    
    /*
     * Endpoints
     */
    #define USB_ENDPOINT_NUMBER_MASK        0x0f    /* in bEndpointAddress */
    #define USB_ENDPOINT_DIR_MASK           0x80
    
    #define USB_ENDPOINT_XFERTYPE_MASK      0x03    /* in bmAttributes */
    #define USB_ENDPOINT_XFER_CONTROL       0
    #define USB_ENDPOINT_XFER_ISOC          1
    #define USB_ENDPOINT_XFER_BULK          2
    #define USB_ENDPOINT_XFER_INT           3
    #define USB_ENDPOINT_MAX_ADJUSTABLE     0x80
    
    /* CONTROL REQUEST SUPPORT */
    
    /*
     * Definition of direction mask for
    * "bEndpointAddress" and "bmRequestType":
    */
   #define USB_DIR_MASK                    0x80
   #define USB_DIR_OUT                     0x00    /* write to USB device */
   #define USB_DIR_IN                      0x80    /* read from USB device */
   
   /*
    * Definition of type mask for
    * "bmRequestType":
    */
   #define USB_TYPE_MASK                   (0x03 << 5)
   #define USB_TYPE_STANDARD               (0x00 << 5)
   #define USB_TYPE_CLASS                  (0x01 << 5)
   #define USB_TYPE_VENDOR                 (0x02 << 5)
   #define USB_TYPE_RESERVED               (0x03 << 5)
   
   /*
    * Definition of receiver mask for
    * "bmRequestType":
    */
   #define USB_RECIP_MASK                  0x1f
   #define USB_RECIP_DEVICE                0x00
   #define USB_RECIP_INTERFACE             0x01
   #define USB_RECIP_ENDPOINT              0x02
   #define USB_RECIP_OTHER                 0x03
   
   /*
    * Definition of standard request values for
    * "bRequest":
    */
   #define USB_REQ_GET_STATUS              0x00
   #define USB_REQ_CLEAR_FEATURE           0x01
   #define USB_REQ_SET_FEATURE             0x03
   #define USB_REQ_SET_ADDRESS             0x05
   #define USB_REQ_GET_DESCRIPTOR          0x06
   #define USB_REQ_SET_DESCRIPTOR          0x07
   #define USB_REQ_GET_CONFIGURATION       0x08
   #define USB_REQ_SET_CONFIGURATION       0x09
   #define USB_REQ_GET_INTERFACE           0x0A
   #define USB_REQ_SET_INTERFACE           0x0B
   #define USB_REQ_SYNCH_FRAME             0x0C
   
   #define USB_REQ_SET_ENCRYPTION          0x0D    /* Wireless USB */
   #define USB_REQ_GET_ENCRYPTION          0x0E
   #define USB_REQ_SET_HANDSHAKE           0x0F
   #define USB_REQ_GET_HANDSHAKE           0x10
   #define USB_REQ_SET_CONNECTION          0x11
   #define USB_REQ_SET_SECURITY_DATA       0x12
   #define USB_REQ_GET_SECURITY_DATA       0x13
   #define USB_REQ_SET_WUSB_DATA           0x14
   #define USB_REQ_LOOPBACK_DATA_WRITE     0x15
   #define USB_REQ_LOOPBACK_DATA_READ      0x16
   #define USB_REQ_SET_INTERFACE_DS        0x17
   
   /*
    * USB feature flags are written using USB_REQ_{CLEAR,SET}_FEATURE, and
    * are read as a bit array returned by USB_REQ_GET_STATUS.  (So there
    * are at most sixteen features of each type.)
    */
   #define USB_DEVICE_SELF_POWERED         0       /* (read only) */
   #define USB_DEVICE_REMOTE_WAKEUP        1       /* dev may initiate wakeup */
   #define USB_DEVICE_TEST_MODE            2       /* (wired high speed only) */
   #define USB_DEVICE_BATTERY              2       /* (wireless) */
   #define USB_DEVICE_B_HNP_ENABLE         3       /* (otg) dev may initiate HNP */
   #define USB_DEVICE_WUSB_DEVICE          3       /* (wireless) */
   #define USB_DEVICE_A_HNP_SUPPORT        4       /* (otg) RH port supports HNP */
   #define USB_DEVICE_A_ALT_HNP_SUPPORT    5       /* (otg) other RH port does */
   #define USB_DEVICE_DEBUG_MODE           6       /* (special devices only) */
   
   #define USB_ENDPOINT_HALT               0       /* IN/OUT will STALL */
   
   #define PIPE_ISOCHRONOUS                0x01    /* UE_ISOCHRONOUS */
   #define PIPE_INTERRUPT                  0x03    /* UE_INTERRUPT */
   #define PIPE_CONTROL                    0x00    /* UE_CONTROL */
   #define PIPE_BULK                       0x02    /* UE_BULK */
   
   /* Whenever Linux references an USB endpoint:
    * a) to initialize "urb->endpoint"
    * b) second argument passed to "usb_control_msg()"
    *
    * Then it uses one of the following macros. The "endpoint" argument
    * is the physical endpoint value masked by 0xF. The "dev" argument
    * is a pointer to "struct usb_device".
    */
   #define usb_sndctrlpipe(dev,endpoint) \
     usb_find_host_endpoint(dev, PIPE_CONTROL, (endpoint) | USB_DIR_OUT)
   
   #define usb_rcvctrlpipe(dev,endpoint) \
     usb_find_host_endpoint(dev, PIPE_CONTROL, (endpoint) | USB_DIR_IN)
   
   #define usb_sndisocpipe(dev,endpoint) \
     usb_find_host_endpoint(dev, PIPE_ISOCHRONOUS, (endpoint) | USB_DIR_OUT)
   
   #define usb_rcvisocpipe(dev,endpoint) \
     usb_find_host_endpoint(dev, PIPE_ISOCHRONOUS, (endpoint) | USB_DIR_IN)
   
   #define usb_sndbulkpipe(dev,endpoint) \
     usb_find_host_endpoint(dev, PIPE_BULK, (endpoint) | USB_DIR_OUT)
   
   #define usb_rcvbulkpipe(dev,endpoint) \
     usb_find_host_endpoint(dev, PIPE_BULK, (endpoint) | USB_DIR_IN)
   
   #define usb_sndintpipe(dev,endpoint) \
     usb_find_host_endpoint(dev, PIPE_INTERRUPT, (endpoint) | USB_DIR_OUT)
   
   #define usb_rcvintpipe(dev,endpoint) \
     usb_find_host_endpoint(dev, PIPE_INTERRUPT, (endpoint) | USB_DIR_IN)
   
   /*
    * The following structure is used to extend "struct urb" when we are
    * dealing with an isochronous endpoint. It contains information about
    * the data offset and data length of an isochronous packet.
    * The "actual_length" field is updated before the "complete"
    * callback in the "urb" structure is called.
    */
   struct usb_iso_packet_descriptor {
           uint32_t offset;                /* depreciated buffer offset (the
                                            * packets are usually back to back) */
           uint16_t length;                /* expected length */
           uint16_t actual_length;
            int16_t status;                /* transfer status */
   };
   
   /*
    * The following structure holds various information about an USB
    * transfer. This structure is used for all kinds of USB transfers.
    *
    * URB is short for USB Request Block.
    */
   struct urb {
           TAILQ_ENTRY(urb) bsd_urb_list;
           struct cv cv_wait;
   
           struct usb_device *dev;         /* (in) pointer to associated device */
           struct usb_host_endpoint *endpoint;     /* (in) pipe pointer */
           uint8_t *setup_packet;          /* (in) setup packet (control only) */
           uint8_t *bsd_data_ptr;
           void   *transfer_buffer;        /* (in) associated data buffer */
           void   *context;                /* (in) context for completion */
           usb_complete_t *complete;       /* (in) completion routine */
   
           usb_size_t transfer_buffer_length;/* (in) data buffer length */
           usb_size_t bsd_length_rem;
           usb_size_t actual_length;       /* (return) actual transfer length */
           usb_timeout_t timeout;          /* FreeBSD specific */
   
           uint16_t transfer_flags;        /* (in) */
   #define URB_SHORT_NOT_OK        0x0001  /* report short transfers like errors */
   #define URB_ISO_ASAP            0x0002  /* ignore "start_frame" field */
   #define URB_ZERO_PACKET         0x0004  /* the USB transfer ends with a short
                                            * packet */
   #define URB_NO_TRANSFER_DMA_MAP 0x0008  /* "transfer_dma" is valid on submit */
   #define URB_WAIT_WAKEUP         0x0010  /* custom flags */
   #define URB_IS_SLEEPING         0x0020  /* custom flags */
   
           usb_frcount_t start_frame;      /* (modify) start frame (ISO) */
           usb_frcount_t number_of_packets;        /* (in) number of ISO packets */
           uint16_t interval;              /* (modify) transfer interval
                                            * (INT/ISO) */
           uint16_t error_count;           /* (return) number of ISO errors */
           int16_t status;                 /* (return) status */
   
           uint8_t setup_dma;              /* (in) not used on FreeBSD */
           uint8_t transfer_dma;           /* (in) not used on FreeBSD */
           uint8_t bsd_isread;
           uint8_t kill_count;             /* FreeBSD specific */
   
           struct usb_iso_packet_descriptor iso_frame_desc[];      /* (in) ISO ONLY */
   };
   
   /* various prototypes */
   
   int     usb_submit_urb(struct urb *urb, uint16_t mem_flags);
   int     usb_unlink_urb(struct urb *urb);
   int     usb_clear_halt(struct usb_device *dev, struct usb_host_endpoint *uhe);
   int     usb_control_msg(struct usb_device *dev, struct usb_host_endpoint *ep,
               uint8_t request, uint8_t requesttype, uint16_t value,
               uint16_t index, void *data, uint16_t size, usb_timeout_t timeout);
   int     usb_set_interface(struct usb_device *dev, uint8_t ifnum,
               uint8_t alternate);
   int     usb_setup_endpoint(struct usb_device *dev,
               struct usb_host_endpoint *uhe, usb_frlength_t bufsize);
   
   struct usb_host_endpoint *usb_find_host_endpoint(struct usb_device *dev,
               uint8_t type, uint8_t ep);
   struct urb *usb_alloc_urb(uint16_t iso_packets, uint16_t mem_flags);
   struct usb_host_interface *usb_altnum_to_altsetting(
               const struct usb_interface *intf, uint8_t alt_index);
   struct usb_interface *usb_ifnum_to_if(struct usb_device *dev, uint8_t iface_no);
   
   void   *usb_buffer_alloc(struct usb_device *dev, usb_size_t size,
               uint16_t mem_flags, uint8_t *dma_addr);
   void   *usbd_get_intfdata(struct usb_interface *intf);
   
   void    usb_buffer_free(struct usb_device *dev, usb_size_t size, void *addr, uint8_t dma_addr);
   void    usb_free_urb(struct urb *urb);
   void    usb_init_urb(struct urb *urb);
   void    usb_kill_urb(struct urb *urb);
   void    usb_set_intfdata(struct usb_interface *intf, void *data);
   void    usb_linux_register(void *arg);
   void    usb_linux_deregister(void *arg);
   
   void    usb_fill_bulk_urb(struct urb *, struct usb_device *,
               struct usb_host_endpoint *, void *, int, usb_complete_t, void *);
   int     usb_bulk_msg(struct usb_device *, struct usb_host_endpoint *,
               void *, int, uint16_t *, usb_timeout_t);
   
   #define interface_to_usbdev(intf) (intf)->linux_udev
   #define interface_to_bsddev(intf) (intf)->linux_udev
   
   #endif                                  /* _USB_COMPAT_LINUX_H */

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