diff options
Diffstat (limited to 'drivers/usb/class/cdc-acm.h')
| -rw-r--r-- | drivers/usb/class/cdc-acm.h | 33 |
1 files changed, 28 insertions, 5 deletions
diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h index 963a5dfd209..fd2aaccdcba 100644 --- a/drivers/usb/class/cdc-acm.h +++ b/drivers/usb/class/cdc-acm.h @@ -59,6 +59,9 @@ * when processing onlcr, so we only need 2 buffers. */ #define ACM_NWB 2 +#define ACM_NRU 16 +#define ACM_NRB 16 + struct acm_wb { unsigned char *buf; dma_addr_t dmah; @@ -66,22 +69,43 @@ struct acm_wb { int use; }; +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; + struct acm *instance; +}; + 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, *readurb, *writeurb; /* urbs */ - u8 *ctrl_buffer, *read_buffer; /* buffers of urbs */ - dma_addr_t ctrl_dma, read_dma; /* dma handles of buffers */ + struct urb *ctrlurb, *writeurb; /* urbs */ + u8 *ctrl_buffer; /* buffers of urbs */ + dma_addr_t ctrl_dma; /* dma handles of buffers */ struct acm_wb wb[ACM_NWB]; + struct acm_ru ru[ACM_NRU]; + struct acm_rb rb[ACM_NRB]; + 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 */ spinlock_t write_lock; struct usb_cdc_line_coding line; /* bits, stop, parity */ struct work_struct work; /* work queue entry for line discipline waking up */ - struct tasklet_struct bh; /* rx processing */ + 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) */ @@ -91,7 +115,6 @@ struct acm { unsigned int minor; /* acm minor number */ unsigned char throttle; /* throttled by tty layer */ unsigned char clocal; /* termios CLOCAL */ - unsigned char resubmit_to_unthrottle; /* throtteling has disabled the read urb */ unsigned int ctrl_caps; /* control capabilities from the class specific header */ }; |