diff options
Diffstat (limited to 'drivers/usb/class/cdc-acm.h')
| -rw-r--r-- | drivers/usb/class/cdc-acm.h | 51 |
1 files changed, 27 insertions, 24 deletions
diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h index 8df6a57dcf9..fc75651afe1 100644 --- a/drivers/usb/class/cdc-acm.h +++ b/drivers/usb/class/cdc-acm.h @@ -52,14 +52,14 @@ */ /* - * The only reason to have several buffers is to accomodate assumptions + * The only reason to have several buffers is to accommodate assumptions * in line disciplines. They ask for empty space amount, receive our URB size, * and proceed to issue several 1-character writes, assuming they will fit. * The very first write takes a complete URB. Fortunately, this only happens * when processing onlcr, so we only need 2 buffers. These values must be * powers of 2. */ -#define ACM_NW 2 +#define ACM_NW 16 #define ACM_NR 16 struct acm_wb { @@ -67,19 +67,15 @@ struct acm_wb { dma_addr_t dmah; int len; int use; + struct urb *urb; + struct acm *instance; }; struct acm_rb { - struct list_head list; int size; unsigned char *base; dma_addr_t dma; -}; - -struct acm_ru { - struct list_head list; - struct acm_rb *buffer; - struct urb *urb; + int index; struct acm *instance; }; @@ -87,45 +83,52 @@ struct acm { struct usb_device *dev; /* the corresponding usb device */ struct usb_interface *control; /* control interface */ struct usb_interface *data; /* data interface */ - struct tty_struct *tty; /* the corresponding tty */ - struct urb *ctrlurb, *writeurb; /* urbs */ + struct tty_port port; /* our tty port data */ + struct urb *ctrlurb; /* urbs */ u8 *ctrl_buffer; /* buffers of urbs */ dma_addr_t ctrl_dma; /* dma handles of buffers */ u8 *country_codes; /* country codes from device */ unsigned int country_code_size; /* size of this buffer */ unsigned int country_rel_date; /* release date of version */ struct acm_wb wb[ACM_NW]; - struct acm_ru ru[ACM_NR]; - struct acm_rb rb[ACM_NR]; + unsigned long read_urbs_free; + struct urb *read_urbs[ACM_NR]; + struct acm_rb read_buffers[ACM_NR]; int rx_buflimit; int rx_endpoint; spinlock_t read_lock; - struct list_head spare_read_urbs; - struct list_head spare_read_bufs; - struct list_head filled_read_bufs; - int write_current; /* current write buffer */ int write_used; /* number of non-empty write buffers */ - int write_ready; /* write urb is not running */ + int transmitting; spinlock_t write_lock; struct mutex mutex; + bool disconnected; struct usb_cdc_line_coding line; /* bits, stop, parity */ struct work_struct work; /* work queue entry for line discipline waking up */ - struct tasklet_struct urb_task; /* rx processing */ - spinlock_t throttle_lock; /* synchronize throtteling and read callback */ unsigned int ctrlin; /* input control lines (DCD, DSR, RI, break, overruns) */ unsigned int ctrlout; /* output control lines (DTR, RTS) */ + struct async_icount iocount; /* counters for control line changes */ + struct async_icount oldcount; /* for comparison of counter */ + wait_queue_head_t wioctl; /* for ioctl */ unsigned int writesize; /* max packet size for the output bulk endpoint */ unsigned int readsize,ctrlsize; /* buffer sizes for freeing */ - unsigned int used; /* someone has this acm's device open */ unsigned int minor; /* acm minor number */ - unsigned char throttle; /* throttled by tty layer */ unsigned char clocal; /* termios CLOCAL */ unsigned int ctrl_caps; /* control capabilities from the class specific header */ unsigned int susp_count; /* number of suspended interfaces */ + unsigned int combined_interfaces:1; /* control and data collapsed */ + unsigned int is_int_ep:1; /* interrupt endpoints contrary to spec used */ + unsigned int throttled:1; /* actually throttled */ + unsigned int throttle_req:1; /* throttle requested */ + u8 bInterval; + struct usb_anchor delayed; /* writes queued for a device about to be woken */ }; #define CDC_DATA_INTERFACE_TYPE 0x0a /* constants describing various quirks and errors */ -#define NO_UNION_NORMAL 1 -#define SINGLE_RX_URB 2 +#define NO_UNION_NORMAL BIT(0) +#define SINGLE_RX_URB BIT(1) +#define NO_CAP_LINE BIT(2) +#define NOT_A_MODEM BIT(3) +#define NO_DATA_INTERFACE BIT(4) +#define IGNORE_DEVICE BIT(5) |