--- /dev/null
+/*
+ *
+ * Includes for cdc-acm.c
+ *
+ * Mainly take from usbnet's cdc-ether part
+ *
+ */
+
+/*
+ * CMSPAR, some architectures can't have space and mark parity.
+ */
+
+#ifndef CMSPAR
+#define CMSPAR 0
+#endif
+
+/*
+ * Major and minor numbers.
+ */
+
+#define ACM_TTY_MAJOR 166
+#define ACM_TTY_MINORS 32
+
+/*
+ * Requests.
+ */
+
+#define USB_RT_ACM (USB_TYPE_CLASS | USB_RECIP_INTERFACE)
+
+/*
+ * Output control lines.
+ */
+
+#define ACM_CTRL_DTR 0x01
+#define ACM_CTRL_RTS 0x02
+
+/*
+ * Input control lines and line errors.
+ */
+
+#define ACM_CTRL_DCD 0x01
+#define ACM_CTRL_DSR 0x02
+#define ACM_CTRL_BRK 0x04
+#define ACM_CTRL_RI 0x08
+
+#define ACM_CTRL_FRAMING 0x10
+#define ACM_CTRL_PARITY 0x20
+#define ACM_CTRL_OVERRUN 0x40
+
+/*
+ * Internal driver structures.
+ */
+
+/*
+ * 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 16
+#define ACM_NR 16
+
+struct acm_wb {
+ unsigned char *buf;
+ dma_addr_t dmah;
+ int len;
+ int use;
+ struct urb *urb;
+ struct acm *instance;
+};
+
+struct acm_rb {
+ int size;
+ unsigned char *base;
+ dma_addr_t dma;
+ int index;
+ 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_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];
+ 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;
+ int write_used; /* number of non-empty write buffers */
+ 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 */
+ 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 minor; /* acm minor number */
+ 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 */
+ unsigned long quirks;
+};
+
+#define CDC_DATA_INTERFACE_TYPE 0x0a
+
+/* constants describing various quirks and errors */
+#define NO_UNION_NORMAL BIT(0)
+#define SINGLE_RX_URB BIT(1)
+#define NO_CAP_LINE BIT(2)
+#define NO_DATA_INTERFACE BIT(4)
+#define IGNORE_DEVICE BIT(5)
+#define QUIRK_CONTROL_LINE_STATE BIT(6)
+#define CLEAR_HALT_CONDITIONS BIT(7)
Code Review / kvmfornfv.git / blobdiff