^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Includes for cdc-acm.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Mainly take from usbnet's cdc-ether part
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * CMSPAR, some architectures can't have space and mark parity.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #ifndef CMSPAR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define CMSPAR 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * Major and minor numbers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define ACM_TTY_MAJOR 166
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define ACM_TTY_MINORS 256
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define ACM_MINOR_INVALID ACM_TTY_MINORS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * Requests.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define USB_RT_ACM (USB_TYPE_CLASS | USB_RECIP_INTERFACE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * Output control lines.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define ACM_CTRL_DTR 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define ACM_CTRL_RTS 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * Input control lines and line errors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define ACM_CTRL_DCD 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define ACM_CTRL_DSR 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define ACM_CTRL_BRK 0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define ACM_CTRL_RI 0x08
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define ACM_CTRL_FRAMING 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define ACM_CTRL_PARITY 0x20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define ACM_CTRL_OVERRUN 0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * Internal driver structures.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * The only reason to have several buffers is to accommodate assumptions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * in line disciplines. They ask for empty space amount, receive our URB size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * and proceed to issue several 1-character writes, assuming they will fit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * The very first write takes a complete URB. Fortunately, this only happens
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * when processing onlcr, so we only need 2 buffers. These values must be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * powers of 2.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define ACM_NW 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #define ACM_NR 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct acm_wb {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) u8 *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) dma_addr_t dmah;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) unsigned int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) struct urb *urb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) struct acm *instance;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) bool use;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) struct acm_rb {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) unsigned char *base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) dma_addr_t dma;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) int index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) struct acm *instance;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) struct acm {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) struct usb_device *dev; /* the corresponding usb device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) struct usb_interface *control; /* control interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) struct usb_interface *data; /* data interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) unsigned in, out; /* i/o pipes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) struct tty_port port; /* our tty port data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct urb *ctrlurb; /* urbs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) u8 *ctrl_buffer; /* buffers of urbs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) dma_addr_t ctrl_dma; /* dma handles of buffers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) u8 *country_codes; /* country codes from device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) unsigned int country_code_size; /* size of this buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) unsigned int country_rel_date; /* release date of version */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) struct acm_wb wb[ACM_NW];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) unsigned long read_urbs_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) struct urb *read_urbs[ACM_NR];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) struct acm_rb read_buffers[ACM_NR];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) int rx_buflimit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) spinlock_t read_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) u8 *notification_buffer; /* to reassemble fragmented notifications */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) unsigned int nb_index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) unsigned int nb_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) int transmitting;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) spinlock_t write_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) struct mutex mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) bool disconnected;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) # define EVENT_TTY_WAKEUP 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) # define EVENT_RX_STALL 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) # define ACM_THROTTLED 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) # define ACM_ERROR_DELAY 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) unsigned long urbs_in_error_delay; /* these need to be restarted after a delay */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) struct usb_cdc_line_coding line; /* bits, stop, parity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct delayed_work dwork; /* work queue entry for various purposes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) unsigned int ctrlin; /* input control lines (DCD, DSR, RI, break, overruns) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) unsigned int ctrlout; /* output control lines (DTR, RTS) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) struct async_icount iocount; /* counters for control line changes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) struct async_icount oldcount; /* for comparison of counter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) wait_queue_head_t wioctl; /* for ioctl */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) unsigned int writesize; /* max packet size for the output bulk endpoint */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) unsigned int readsize,ctrlsize; /* buffer sizes for freeing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) unsigned int minor; /* acm minor number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) unsigned char clocal; /* termios CLOCAL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) unsigned int ctrl_caps; /* control capabilities from the class specific header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) unsigned int susp_count; /* number of suspended interfaces */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) unsigned int combined_interfaces:1; /* control and data collapsed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) u8 bInterval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) struct usb_anchor delayed; /* writes queued for a device about to be woken */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) unsigned long quirks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) /* constants describing various quirks and errors */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) #define NO_UNION_NORMAL BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) #define SINGLE_RX_URB BIT(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) #define NO_CAP_LINE BIT(2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) #define IGNORE_DEVICE BIT(3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) #define QUIRK_CONTROL_LINE_STATE BIT(4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) #define CLEAR_HALT_CONDITIONS BIT(5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) #define SEND_ZERO_PACKET BIT(6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) #define DISABLE_ECHO BIT(7)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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