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Viewing changes to drivers/usb/class/cdc-acm.h

  • Committer: Bazaar Package Importer
  • Author(s): Paolo Pisati
  • Date: 2011-06-29 15:23:51 UTC
  • mfrom: (26.1.1 natty-proposed)
  • Revision ID: james.westby@ubuntu.com-20110629152351-xs96tm303d95rpbk
Tags: 3.0.0-1200.2
* Rebased against 3.0.0-6.7
* BSP from TI based on 3.0.0

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drivers/usb/class/cdc-acm.h
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 */
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/*
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 * The only reason to have several buffers is to accomodate assumptions
 
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 * The only reason to have several buffers is to accommodate assumptions
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 * in line disciplines. They ask for empty space amount, receive our URB size,
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 * and proceed to issue several 1-character writes, assuming they will fit.
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 * The very first write takes a complete URB. Fortunately, this only happens
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};
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struct acm_rb {
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        struct list_head        list;
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        int                     size;
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        unsigned char           *base;
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        dma_addr_t              dma;
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};
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struct acm_ru {
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        struct list_head        list;
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        struct acm_rb           *buffer;
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        struct urb              *urb;
 
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        int                     index;
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        struct acm              *instance;
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};
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        unsigned int country_code_size;                 /* size of this buffer */
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        unsigned int country_rel_date;                  /* release date of version */
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        struct acm_wb wb[ACM_NW];
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        struct acm_ru ru[ACM_NR];
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        struct acm_rb rb[ACM_NR];
 
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        unsigned long read_urbs_free;
 
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        struct urb *read_urbs[ACM_NR];
 
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        struct acm_rb read_buffers[ACM_NR];
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        int rx_buflimit;
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        int rx_endpoint;
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        spinlock_t read_lock;
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        struct list_head spare_read_urbs;
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        struct list_head spare_read_bufs;
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        struct list_head filled_read_bufs;
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        int write_used;                                 /* number of non-empty write buffers */
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        int processing;
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        int transmitting;
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        spinlock_t write_lock;
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        struct mutex mutex;
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        struct usb_cdc_line_coding line;                /* bits, stop, parity */
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        struct work_struct work;                        /* work queue entry for line discipline waking up */
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        wait_queue_head_t drain_wait;                   /* close processing */
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        struct tasklet_struct urb_task;                 /* rx processing */
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        spinlock_t throttle_lock;                       /* synchronize throtteling and read callback */
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        unsigned int ctrlin;                            /* input control lines (DCD, DSR, RI, break, overruns) */
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        unsigned int ctrlout;                           /* output control lines (DTR, RTS) */
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        unsigned int writesize;                         /* max packet size for the output bulk endpoint */
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        unsigned int readsize,ctrlsize;                 /* buffer sizes for freeing */
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        unsigned int minor;                             /* acm minor number */
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        unsigned char throttle;                         /* throttled by tty layer */
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        unsigned char clocal;                           /* termios CLOCAL */
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        unsigned int ctrl_caps;                         /* control capabilities from the class specific header */
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        unsigned int susp_count;                        /* number of suspended interfaces */
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        unsigned int combined_interfaces:1;             /* control and data collapsed */
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        unsigned int is_int_ep:1;                       /* interrupt endpoints contrary to spec used */
 
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        unsigned int throttled:1;                       /* actually throttled */
 
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        unsigned int throttle_req:1;                    /* throttle requested */
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        u8 bInterval;
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        struct acm_wb *delayed_wb;                      /* write queued for a device about to be woken */
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};
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#define SINGLE_RX_URB                   2
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#define NO_CAP_LINE                     4
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#define NOT_A_MODEM                     8
 
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#define NO_DATA_INTERFACE               16