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3252 lines
100 KiB
3252 lines
100 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* Edgeport USB Serial Converter driver |
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* |
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* Copyright (C) 2000 Inside Out Networks, All rights reserved. |
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* Copyright (C) 2001-2002 Greg Kroah-Hartman <[email protected]> |
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* |
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* Supports the following devices: |
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* Edgeport/4 |
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* Edgeport/4t |
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* Edgeport/2 |
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* Edgeport/4i |
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* Edgeport/2i |
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* Edgeport/421 |
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* Edgeport/21 |
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* Rapidport/4 |
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* Edgeport/8 |
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* Edgeport/2D8 |
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* Edgeport/4D8 |
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* Edgeport/8i |
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* |
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* For questions or problems with this driver, contact Inside Out |
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* Networks technical support, or Peter Berger <[email protected]>, |
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* or Al Borchers <[email protected]>. |
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* |
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*/ |
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|
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#include <linux/kernel.h> |
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#include <linux/jiffies.h> |
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#include <linux/errno.h> |
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#include <linux/slab.h> |
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#include <linux/tty.h> |
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#include <linux/tty_driver.h> |
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#include <linux/tty_flip.h> |
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#include <linux/module.h> |
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#include <linux/spinlock.h> |
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#include <linux/serial.h> |
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#include <linux/ioctl.h> |
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#include <linux/wait.h> |
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#include <linux/firmware.h> |
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#include <linux/ihex.h> |
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#include <linux/uaccess.h> |
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#include <linux/usb.h> |
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#include <linux/usb/serial.h> |
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#include "io_edgeport.h" |
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#include "io_ionsp.h" /* info for the iosp messages */ |
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#include "io_16654.h" /* 16654 UART defines */ |
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#define DRIVER_AUTHOR "Greg Kroah-Hartman <[email protected]> and David Iacovelli" |
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#define DRIVER_DESC "Edgeport USB Serial Driver" |
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|
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#define MAX_NAME_LEN 64 |
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|
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#define OPEN_TIMEOUT (5*HZ) /* 5 seconds */ |
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static const struct usb_device_id edgeport_2port_id_table[] = { |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) }, |
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{ } |
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}; |
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|
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static const struct usb_device_id edgeport_4port_id_table[] = { |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) }, |
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{ } |
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}; |
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|
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static const struct usb_device_id edgeport_8port_id_table[] = { |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) }, |
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{ } |
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}; |
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|
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static const struct usb_device_id Epic_port_id_table[] = { |
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{ USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) }, |
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{ USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) }, |
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{ USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) }, |
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{ USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) }, |
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{ USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) }, |
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{ USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) }, |
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{ USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) }, |
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{ USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) }, |
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{ } |
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}; |
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|
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/* Devices that this driver supports */ |
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static const struct usb_device_id id_table_combined[] = { |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) }, |
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{ USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) }, |
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{ USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) }, |
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{ USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) }, |
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{ USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) }, |
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{ USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) }, |
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{ USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) }, |
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{ USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) }, |
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{ USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) }, |
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{ USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) }, |
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{ } /* Terminating entry */ |
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}; |
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|
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MODULE_DEVICE_TABLE(usb, id_table_combined); |
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|
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|
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/* receive port state */ |
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enum RXSTATE { |
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EXPECT_HDR1 = 0, /* Expect header byte 1 */ |
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EXPECT_HDR2 = 1, /* Expect header byte 2 */ |
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EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */ |
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EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */ |
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}; |
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/* Transmit Fifo |
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* This Transmit queue is an extension of the edgeport Rx buffer. |
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* The maximum amount of data buffered in both the edgeport |
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* Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits. |
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*/ |
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struct TxFifo { |
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unsigned int head; /* index to head pointer (write) */ |
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unsigned int tail; /* index to tail pointer (read) */ |
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unsigned int count; /* Bytes in queue */ |
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unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */ |
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unsigned char *fifo; /* allocated Buffer */ |
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}; |
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|
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/* This structure holds all of the local port information */ |
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struct edgeport_port { |
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__u16 txCredits; /* our current credits for this port */ |
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__u16 maxTxCredits; /* the max size of the port */ |
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struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */ |
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struct urb *write_urb; /* write URB for this port */ |
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bool write_in_progress; /* 'true' while a write URB is outstanding */ |
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spinlock_t ep_lock; |
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__u8 shadowLCR; /* last LCR value received */ |
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__u8 shadowMCR; /* last MCR value received */ |
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__u8 shadowMSR; /* last MSR value received */ |
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__u8 shadowLSR; /* last LSR value received */ |
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__u8 shadowXonChar; /* last value set as XON char in Edgeport */ |
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__u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */ |
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__u8 validDataMask; |
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__u32 baudRate; |
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bool open; |
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bool openPending; |
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bool commandPending; |
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bool closePending; |
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bool chaseResponsePending; |
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wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ |
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wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */ |
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wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */ |
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|
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struct usb_serial_port *port; /* loop back to the owner of this object */ |
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}; |
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/* This structure holds all of the individual device information */ |
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struct edgeport_serial { |
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char name[MAX_NAME_LEN+2]; /* string name of this device */ |
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struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */ |
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struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */ |
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struct edgeport_product_info product_info; /* Product Info */ |
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struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */ |
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int is_epic; /* flag if EPiC device or not */ |
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__u8 interrupt_in_endpoint; /* the interrupt endpoint handle */ |
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unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */ |
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struct urb *interrupt_read_urb; /* our interrupt urb */ |
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__u8 bulk_in_endpoint; /* the bulk in endpoint handle */ |
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unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */ |
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struct urb *read_urb; /* our bulk read urb */ |
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bool read_in_progress; |
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spinlock_t es_lock; |
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__u8 bulk_out_endpoint; /* the bulk out endpoint handle */ |
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__s16 rxBytesAvail; /* the number of bytes that we need to read from this device */ |
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enum RXSTATE rxState; /* the current state of the bulk receive processor */ |
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__u8 rxHeader1; /* receive header byte 1 */ |
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__u8 rxHeader2; /* receive header byte 2 */ |
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__u8 rxHeader3; /* receive header byte 3 */ |
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__u8 rxPort; /* the port that we are currently receiving data for */ |
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__u8 rxStatusCode; /* the receive status code */ |
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__u8 rxStatusParam; /* the receive status paramater */ |
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__s16 rxBytesRemaining; /* the number of port bytes left to read */ |
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struct usb_serial *serial; /* loop back to the owner of this object */ |
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}; |
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/* baud rate information */ |
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struct divisor_table_entry { |
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__u32 BaudRate; |
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__u16 Divisor; |
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}; |
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/* |
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* Define table of divisors for Rev A EdgePort/4 hardware |
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* These assume a 3.6864MHz crystal, the standard /16, and |
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* MCR.7 = 0. |
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*/ |
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static const struct divisor_table_entry divisor_table[] = { |
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{ 50, 4608}, |
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{ 75, 3072}, |
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{ 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */ |
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{ 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */ |
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{ 150, 1536}, |
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{ 300, 768}, |
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{ 600, 384}, |
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{ 1200, 192}, |
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{ 1800, 128}, |
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{ 2400, 96}, |
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{ 4800, 48}, |
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{ 7200, 32}, |
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{ 9600, 24}, |
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{ 14400, 16}, |
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{ 19200, 12}, |
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{ 38400, 6}, |
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{ 57600, 4}, |
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{ 115200, 2}, |
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{ 230400, 1}, |
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}; |
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/* Number of outstanding Command Write Urbs */ |
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static atomic_t CmdUrbs = ATOMIC_INIT(0); |
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/* local function prototypes */ |
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/* function prototypes for all URB callbacks */ |
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static void edge_interrupt_callback(struct urb *urb); |
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static void edge_bulk_in_callback(struct urb *urb); |
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static void edge_bulk_out_data_callback(struct urb *urb); |
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static void edge_bulk_out_cmd_callback(struct urb *urb); |
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|
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/* function prototypes for the usbserial callbacks */ |
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static int edge_open(struct tty_struct *tty, struct usb_serial_port *port); |
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static void edge_close(struct usb_serial_port *port); |
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static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, |
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const unsigned char *buf, int count); |
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static int edge_write_room(struct tty_struct *tty); |
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static int edge_chars_in_buffer(struct tty_struct *tty); |
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static void edge_throttle(struct tty_struct *tty); |
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static void edge_unthrottle(struct tty_struct *tty); |
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static void edge_set_termios(struct tty_struct *tty, |
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struct usb_serial_port *port, |
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struct ktermios *old_termios); |
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static int edge_ioctl(struct tty_struct *tty, |
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unsigned int cmd, unsigned long arg); |
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static void edge_break(struct tty_struct *tty, int break_state); |
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static int edge_tiocmget(struct tty_struct *tty); |
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static int edge_tiocmset(struct tty_struct *tty, |
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unsigned int set, unsigned int clear); |
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static int edge_startup(struct usb_serial *serial); |
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static void edge_disconnect(struct usb_serial *serial); |
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static void edge_release(struct usb_serial *serial); |
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static int edge_port_probe(struct usb_serial_port *port); |
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static void edge_port_remove(struct usb_serial_port *port); |
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|
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/* function prototypes for all of our local functions */ |
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|
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static void process_rcvd_data(struct edgeport_serial *edge_serial, |
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unsigned char *buffer, __u16 bufferLength); |
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static void process_rcvd_status(struct edgeport_serial *edge_serial, |
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__u8 byte2, __u8 byte3); |
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static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, |
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int length); |
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static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr); |
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static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, |
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__u8 lsr, __u8 data); |
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static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command, |
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__u8 param); |
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static int calc_baud_rate_divisor(struct device *dev, int baud_rate, int *divisor); |
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static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, |
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int baudRate); |
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static void change_port_settings(struct tty_struct *tty, |
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struct edgeport_port *edge_port, |
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struct ktermios *old_termios); |
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static int send_cmd_write_uart_register(struct edgeport_port *edge_port, |
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__u8 regNum, __u8 regValue); |
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static int write_cmd_usb(struct edgeport_port *edge_port, |
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unsigned char *buffer, int writeLength); |
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static void send_more_port_data(struct edgeport_serial *edge_serial, |
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struct edgeport_port *edge_port); |
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|
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static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, |
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__u16 length, const __u8 *data); |
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static int rom_read(struct usb_serial *serial, __u16 extAddr, __u16 addr, |
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__u16 length, __u8 *data); |
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static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, |
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__u16 length, const __u8 *data); |
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static void get_manufacturing_desc(struct edgeport_serial *edge_serial); |
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static void get_boot_desc(struct edgeport_serial *edge_serial); |
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static void load_application_firmware(struct edgeport_serial *edge_serial); |
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|
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static void unicode_to_ascii(char *string, int buflen, |
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__le16 *unicode, int unicode_size); |
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|
|
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/* ************************************************************************ */ |
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/* ************************************************************************ */ |
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/* ************************************************************************ */ |
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/* ************************************************************************ */ |
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|
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/************************************************************************ |
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* * |
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* update_edgeport_E2PROM() Compare current versions of * |
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* Boot ROM and Manufacture * |
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* Descriptors with versions * |
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* embedded in this driver * |
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* * |
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************************************************************************/ |
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static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial) |
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{ |
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struct device *dev = &edge_serial->serial->dev->dev; |
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__u32 BootCurVer; |
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__u32 BootNewVer; |
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__u8 BootMajorVersion; |
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__u8 BootMinorVersion; |
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__u16 BootBuildNumber; |
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__u32 Bootaddr; |
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const struct ihex_binrec *rec; |
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const struct firmware *fw; |
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const char *fw_name; |
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int response; |
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|
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switch (edge_serial->product_info.iDownloadFile) { |
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case EDGE_DOWNLOAD_FILE_I930: |
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fw_name = "edgeport/boot.fw"; |
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break; |
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case EDGE_DOWNLOAD_FILE_80251: |
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fw_name = "edgeport/boot2.fw"; |
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break; |
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default: |
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return; |
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} |
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|
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response = request_ihex_firmware(&fw, fw_name, |
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&edge_serial->serial->dev->dev); |
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if (response) { |
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dev_err(dev, "Failed to load image \"%s\" err %d\n", |
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fw_name, response); |
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return; |
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} |
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|
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rec = (const struct ihex_binrec *)fw->data; |
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BootMajorVersion = rec->data[0]; |
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BootMinorVersion = rec->data[1]; |
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BootBuildNumber = (rec->data[2] << 8) | rec->data[3]; |
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|
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/* Check Boot Image Version */ |
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BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) + |
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(edge_serial->boot_descriptor.MinorVersion << 16) + |
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le16_to_cpu(edge_serial->boot_descriptor.BuildNumber); |
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|
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BootNewVer = (BootMajorVersion << 24) + |
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(BootMinorVersion << 16) + |
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BootBuildNumber; |
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|
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dev_dbg(dev, "Current Boot Image version %d.%d.%d\n", |
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edge_serial->boot_descriptor.MajorVersion, |
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edge_serial->boot_descriptor.MinorVersion, |
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le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); |
|
|
|
|
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if (BootNewVer > BootCurVer) { |
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dev_dbg(dev, "**Update Boot Image from %d.%d.%d to %d.%d.%d\n", |
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edge_serial->boot_descriptor.MajorVersion, |
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edge_serial->boot_descriptor.MinorVersion, |
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le16_to_cpu(edge_serial->boot_descriptor.BuildNumber), |
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BootMajorVersion, BootMinorVersion, BootBuildNumber); |
|
|
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dev_dbg(dev, "Downloading new Boot Image\n"); |
|
|
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for (rec = ihex_next_binrec(rec); rec; |
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rec = ihex_next_binrec(rec)) { |
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Bootaddr = be32_to_cpu(rec->addr); |
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response = rom_write(edge_serial->serial, |
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Bootaddr >> 16, |
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Bootaddr & 0xFFFF, |
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be16_to_cpu(rec->len), |
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&rec->data[0]); |
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if (response < 0) { |
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dev_err(&edge_serial->serial->dev->dev, |
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"rom_write failed (%x, %x, %d)\n", |
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Bootaddr >> 16, Bootaddr & 0xFFFF, |
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be16_to_cpu(rec->len)); |
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break; |
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} |
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} |
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} else { |
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dev_dbg(dev, "Boot Image -- already up to date\n"); |
|
} |
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release_firmware(fw); |
|
} |
|
|
|
#if 0 |
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/************************************************************************ |
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* |
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* Get string descriptor from device |
|
* |
|
************************************************************************/ |
|
static int get_string_desc(struct usb_device *dev, int Id, |
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struct usb_string_descriptor **pRetDesc) |
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{ |
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struct usb_string_descriptor StringDesc; |
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struct usb_string_descriptor *pStringDesc; |
|
|
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dev_dbg(&dev->dev, "%s - USB String ID = %d\n", __func__, Id); |
|
|
|
if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, |
|
sizeof(StringDesc))) |
|
return 0; |
|
|
|
pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL); |
|
if (!pStringDesc) |
|
return -1; |
|
|
|
if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, |
|
StringDesc.bLength)) { |
|
kfree(pStringDesc); |
|
return -1; |
|
} |
|
|
|
*pRetDesc = pStringDesc; |
|
return 0; |
|
} |
|
#endif |
|
|
|
static void dump_product_info(struct edgeport_serial *edge_serial, |
|
struct edgeport_product_info *product_info) |
|
{ |
|
struct device *dev = &edge_serial->serial->dev->dev; |
|
|
|
/* Dump Product Info structure */ |
|
dev_dbg(dev, "**Product Information:\n"); |
|
dev_dbg(dev, " ProductId %x\n", product_info->ProductId); |
|
dev_dbg(dev, " NumPorts %d\n", product_info->NumPorts); |
|
dev_dbg(dev, " ProdInfoVer %d\n", product_info->ProdInfoVer); |
|
dev_dbg(dev, " IsServer %d\n", product_info->IsServer); |
|
dev_dbg(dev, " IsRS232 %d\n", product_info->IsRS232); |
|
dev_dbg(dev, " IsRS422 %d\n", product_info->IsRS422); |
|
dev_dbg(dev, " IsRS485 %d\n", product_info->IsRS485); |
|
dev_dbg(dev, " RomSize %d\n", product_info->RomSize); |
|
dev_dbg(dev, " RamSize %d\n", product_info->RamSize); |
|
dev_dbg(dev, " CpuRev %x\n", product_info->CpuRev); |
|
dev_dbg(dev, " BoardRev %x\n", product_info->BoardRev); |
|
dev_dbg(dev, " BootMajorVersion %d.%d.%d\n", |
|
product_info->BootMajorVersion, |
|
product_info->BootMinorVersion, |
|
le16_to_cpu(product_info->BootBuildNumber)); |
|
dev_dbg(dev, " FirmwareMajorVersion %d.%d.%d\n", |
|
product_info->FirmwareMajorVersion, |
|
product_info->FirmwareMinorVersion, |
|
le16_to_cpu(product_info->FirmwareBuildNumber)); |
|
dev_dbg(dev, " ManufactureDescDate %d/%d/%d\n", |
|
product_info->ManufactureDescDate[0], |
|
product_info->ManufactureDescDate[1], |
|
product_info->ManufactureDescDate[2]+1900); |
|
dev_dbg(dev, " iDownloadFile 0x%x\n", |
|
product_info->iDownloadFile); |
|
dev_dbg(dev, " EpicVer %d\n", product_info->EpicVer); |
|
} |
|
|
|
static void get_product_info(struct edgeport_serial *edge_serial) |
|
{ |
|
struct edgeport_product_info *product_info = &edge_serial->product_info; |
|
|
|
memset(product_info, 0, sizeof(struct edgeport_product_info)); |
|
|
|
product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP); |
|
product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts; |
|
product_info->ProdInfoVer = 0; |
|
|
|
product_info->RomSize = edge_serial->manuf_descriptor.RomSize; |
|
product_info->RamSize = edge_serial->manuf_descriptor.RamSize; |
|
product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev; |
|
product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev; |
|
|
|
product_info->BootMajorVersion = |
|
edge_serial->boot_descriptor.MajorVersion; |
|
product_info->BootMinorVersion = |
|
edge_serial->boot_descriptor.MinorVersion; |
|
product_info->BootBuildNumber = |
|
edge_serial->boot_descriptor.BuildNumber; |
|
|
|
memcpy(product_info->ManufactureDescDate, |
|
edge_serial->manuf_descriptor.DescDate, |
|
sizeof(edge_serial->manuf_descriptor.DescDate)); |
|
|
|
/* check if this is 2nd generation hardware */ |
|
if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) |
|
& ION_DEVICE_ID_80251_NETCHIP) |
|
product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251; |
|
else |
|
product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930; |
|
|
|
/* Determine Product type and set appropriate flags */ |
|
switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) { |
|
case ION_DEVICE_ID_EDGEPORT_COMPATIBLE: |
|
case ION_DEVICE_ID_EDGEPORT_4T: |
|
case ION_DEVICE_ID_EDGEPORT_4: |
|
case ION_DEVICE_ID_EDGEPORT_2: |
|
case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU: |
|
case ION_DEVICE_ID_EDGEPORT_8: |
|
case ION_DEVICE_ID_EDGEPORT_421: |
|
case ION_DEVICE_ID_EDGEPORT_21: |
|
case ION_DEVICE_ID_EDGEPORT_2_DIN: |
|
case ION_DEVICE_ID_EDGEPORT_4_DIN: |
|
case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU: |
|
product_info->IsRS232 = 1; |
|
break; |
|
|
|
case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */ |
|
product_info->IsRS422 = 1; |
|
product_info->IsRS485 = 1; |
|
break; |
|
|
|
case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */ |
|
case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */ |
|
product_info->IsRS422 = 1; |
|
break; |
|
} |
|
|
|
dump_product_info(edge_serial, product_info); |
|
} |
|
|
|
static int get_epic_descriptor(struct edgeport_serial *ep) |
|
{ |
|
int result; |
|
struct usb_serial *serial = ep->serial; |
|
struct edgeport_product_info *product_info = &ep->product_info; |
|
struct edge_compatibility_descriptor *epic; |
|
struct edge_compatibility_bits *bits; |
|
struct device *dev = &serial->dev->dev; |
|
|
|
ep->is_epic = 0; |
|
|
|
epic = kmalloc(sizeof(*epic), GFP_KERNEL); |
|
if (!epic) |
|
return -ENOMEM; |
|
|
|
result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
|
USB_REQUEST_ION_GET_EPIC_DESC, |
|
0xC0, 0x00, 0x00, |
|
epic, sizeof(*epic), |
|
300); |
|
if (result == sizeof(*epic)) { |
|
ep->is_epic = 1; |
|
memcpy(&ep->epic_descriptor, epic, sizeof(*epic)); |
|
memset(product_info, 0, sizeof(struct edgeport_product_info)); |
|
|
|
product_info->NumPorts = epic->NumPorts; |
|
product_info->ProdInfoVer = 0; |
|
product_info->FirmwareMajorVersion = epic->MajorVersion; |
|
product_info->FirmwareMinorVersion = epic->MinorVersion; |
|
product_info->FirmwareBuildNumber = epic->BuildNumber; |
|
product_info->iDownloadFile = epic->iDownloadFile; |
|
product_info->EpicVer = epic->EpicVer; |
|
product_info->Epic = epic->Supports; |
|
product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE; |
|
dump_product_info(ep, product_info); |
|
|
|
bits = &ep->epic_descriptor.Supports; |
|
dev_dbg(dev, "**EPIC descriptor:\n"); |
|
dev_dbg(dev, " VendEnableSuspend: %s\n", bits->VendEnableSuspend ? "TRUE": "FALSE"); |
|
dev_dbg(dev, " IOSPOpen : %s\n", bits->IOSPOpen ? "TRUE": "FALSE"); |
|
dev_dbg(dev, " IOSPClose : %s\n", bits->IOSPClose ? "TRUE": "FALSE"); |
|
dev_dbg(dev, " IOSPChase : %s\n", bits->IOSPChase ? "TRUE": "FALSE"); |
|
dev_dbg(dev, " IOSPSetRxFlow : %s\n", bits->IOSPSetRxFlow ? "TRUE": "FALSE"); |
|
dev_dbg(dev, " IOSPSetTxFlow : %s\n", bits->IOSPSetTxFlow ? "TRUE": "FALSE"); |
|
dev_dbg(dev, " IOSPSetXChar : %s\n", bits->IOSPSetXChar ? "TRUE": "FALSE"); |
|
dev_dbg(dev, " IOSPRxCheck : %s\n", bits->IOSPRxCheck ? "TRUE": "FALSE"); |
|
dev_dbg(dev, " IOSPSetClrBreak : %s\n", bits->IOSPSetClrBreak ? "TRUE": "FALSE"); |
|
dev_dbg(dev, " IOSPWriteMCR : %s\n", bits->IOSPWriteMCR ? "TRUE": "FALSE"); |
|
dev_dbg(dev, " IOSPWriteLCR : %s\n", bits->IOSPWriteLCR ? "TRUE": "FALSE"); |
|
dev_dbg(dev, " IOSPSetBaudRate : %s\n", bits->IOSPSetBaudRate ? "TRUE": "FALSE"); |
|
dev_dbg(dev, " TrueEdgeport : %s\n", bits->TrueEdgeport ? "TRUE": "FALSE"); |
|
|
|
result = 0; |
|
} else if (result >= 0) { |
|
dev_warn(&serial->interface->dev, "short epic descriptor received: %d\n", |
|
result); |
|
result = -EIO; |
|
} |
|
|
|
kfree(epic); |
|
|
|
return result; |
|
} |
|
|
|
|
|
/************************************************************************/ |
|
/************************************************************************/ |
|
/* U S B C A L L B A C K F U N C T I O N S */ |
|
/* U S B C A L L B A C K F U N C T I O N S */ |
|
/************************************************************************/ |
|
/************************************************************************/ |
|
|
|
/***************************************************************************** |
|
* edge_interrupt_callback |
|
* this is the callback function for when we have received data on the |
|
* interrupt endpoint. |
|
*****************************************************************************/ |
|
static void edge_interrupt_callback(struct urb *urb) |
|
{ |
|
struct edgeport_serial *edge_serial = urb->context; |
|
struct device *dev; |
|
struct edgeport_port *edge_port; |
|
struct usb_serial_port *port; |
|
unsigned char *data = urb->transfer_buffer; |
|
int length = urb->actual_length; |
|
unsigned long flags; |
|
int bytes_avail; |
|
int position; |
|
int txCredits; |
|
int portNumber; |
|
int result; |
|
int status = urb->status; |
|
|
|
switch (status) { |
|
case 0: |
|
/* success */ |
|
break; |
|
case -ECONNRESET: |
|
case -ENOENT: |
|
case -ESHUTDOWN: |
|
/* this urb is terminated, clean up */ |
|
dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); |
|
return; |
|
default: |
|
dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status); |
|
goto exit; |
|
} |
|
|
|
dev = &edge_serial->serial->dev->dev; |
|
|
|
/* process this interrupt-read even if there are no ports open */ |
|
if (length) { |
|
usb_serial_debug_data(dev, __func__, length, data); |
|
|
|
if (length > 1) { |
|
bytes_avail = data[0] | (data[1] << 8); |
|
if (bytes_avail) { |
|
spin_lock_irqsave(&edge_serial->es_lock, flags); |
|
edge_serial->rxBytesAvail += bytes_avail; |
|
dev_dbg(dev, |
|
"%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n", |
|
__func__, bytes_avail, |
|
edge_serial->rxBytesAvail, |
|
edge_serial->read_in_progress); |
|
|
|
if (edge_serial->rxBytesAvail > 0 && |
|
!edge_serial->read_in_progress) { |
|
dev_dbg(dev, "%s - posting a read\n", __func__); |
|
edge_serial->read_in_progress = true; |
|
|
|
/* we have pending bytes on the |
|
bulk in pipe, send a request */ |
|
result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); |
|
if (result) { |
|
dev_err(dev, |
|
"%s - usb_submit_urb(read bulk) failed with result = %d\n", |
|
__func__, result); |
|
edge_serial->read_in_progress = false; |
|
} |
|
} |
|
spin_unlock_irqrestore(&edge_serial->es_lock, |
|
flags); |
|
} |
|
} |
|
/* grab the txcredits for the ports if available */ |
|
position = 2; |
|
portNumber = 0; |
|
while ((position < length - 1) && |
|
(portNumber < edge_serial->serial->num_ports)) { |
|
txCredits = data[position] | (data[position+1] << 8); |
|
if (txCredits) { |
|
port = edge_serial->serial->port[portNumber]; |
|
edge_port = usb_get_serial_port_data(port); |
|
if (edge_port && edge_port->open) { |
|
spin_lock_irqsave(&edge_port->ep_lock, |
|
flags); |
|
edge_port->txCredits += txCredits; |
|
spin_unlock_irqrestore(&edge_port->ep_lock, |
|
flags); |
|
dev_dbg(dev, "%s - txcredits for port%d = %d\n", |
|
__func__, portNumber, |
|
edge_port->txCredits); |
|
|
|
/* tell the tty driver that something |
|
has changed */ |
|
tty_port_tty_wakeup(&edge_port->port->port); |
|
/* Since we have more credit, check |
|
if more data can be sent */ |
|
send_more_port_data(edge_serial, |
|
edge_port); |
|
} |
|
} |
|
position += 2; |
|
++portNumber; |
|
} |
|
} |
|
|
|
exit: |
|
result = usb_submit_urb(urb, GFP_ATOMIC); |
|
if (result) |
|
dev_err(&urb->dev->dev, |
|
"%s - Error %d submitting control urb\n", |
|
__func__, result); |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* edge_bulk_in_callback |
|
* this is the callback function for when we have received data on the |
|
* bulk in endpoint. |
|
*****************************************************************************/ |
|
static void edge_bulk_in_callback(struct urb *urb) |
|
{ |
|
struct edgeport_serial *edge_serial = urb->context; |
|
struct device *dev; |
|
unsigned char *data = urb->transfer_buffer; |
|
int retval; |
|
__u16 raw_data_length; |
|
int status = urb->status; |
|
unsigned long flags; |
|
|
|
if (status) { |
|
dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", |
|
__func__, status); |
|
edge_serial->read_in_progress = false; |
|
return; |
|
} |
|
|
|
if (urb->actual_length == 0) { |
|
dev_dbg(&urb->dev->dev, "%s - read bulk callback with no data\n", __func__); |
|
edge_serial->read_in_progress = false; |
|
return; |
|
} |
|
|
|
dev = &edge_serial->serial->dev->dev; |
|
raw_data_length = urb->actual_length; |
|
|
|
usb_serial_debug_data(dev, __func__, raw_data_length, data); |
|
|
|
spin_lock_irqsave(&edge_serial->es_lock, flags); |
|
|
|
/* decrement our rxBytes available by the number that we just got */ |
|
edge_serial->rxBytesAvail -= raw_data_length; |
|
|
|
dev_dbg(dev, "%s - Received = %d, rxBytesAvail %d\n", __func__, |
|
raw_data_length, edge_serial->rxBytesAvail); |
|
|
|
process_rcvd_data(edge_serial, data, urb->actual_length); |
|
|
|
/* check to see if there's any more data for us to read */ |
|
if (edge_serial->rxBytesAvail > 0) { |
|
dev_dbg(dev, "%s - posting a read\n", __func__); |
|
retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); |
|
if (retval) { |
|
dev_err(dev, |
|
"%s - usb_submit_urb(read bulk) failed, retval = %d\n", |
|
__func__, retval); |
|
edge_serial->read_in_progress = false; |
|
} |
|
} else { |
|
edge_serial->read_in_progress = false; |
|
} |
|
|
|
spin_unlock_irqrestore(&edge_serial->es_lock, flags); |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* edge_bulk_out_data_callback |
|
* this is the callback function for when we have finished sending |
|
* serial data on the bulk out endpoint. |
|
*****************************************************************************/ |
|
static void edge_bulk_out_data_callback(struct urb *urb) |
|
{ |
|
struct edgeport_port *edge_port = urb->context; |
|
int status = urb->status; |
|
|
|
if (status) { |
|
dev_dbg(&urb->dev->dev, |
|
"%s - nonzero write bulk status received: %d\n", |
|
__func__, status); |
|
} |
|
|
|
if (edge_port->open) |
|
tty_port_tty_wakeup(&edge_port->port->port); |
|
|
|
/* Release the Write URB */ |
|
edge_port->write_in_progress = false; |
|
|
|
/* Check if more data needs to be sent */ |
|
send_more_port_data((struct edgeport_serial *) |
|
(usb_get_serial_data(edge_port->port->serial)), edge_port); |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* BulkOutCmdCallback |
|
* this is the callback function for when we have finished sending a |
|
* command on the bulk out endpoint. |
|
*****************************************************************************/ |
|
static void edge_bulk_out_cmd_callback(struct urb *urb) |
|
{ |
|
struct edgeport_port *edge_port = urb->context; |
|
int status = urb->status; |
|
|
|
atomic_dec(&CmdUrbs); |
|
dev_dbg(&urb->dev->dev, "%s - FREE URB %p (outstanding %d)\n", |
|
__func__, urb, atomic_read(&CmdUrbs)); |
|
|
|
|
|
/* clean up the transfer buffer */ |
|
kfree(urb->transfer_buffer); |
|
|
|
/* Free the command urb */ |
|
usb_free_urb(urb); |
|
|
|
if (status) { |
|
dev_dbg(&urb->dev->dev, |
|
"%s - nonzero write bulk status received: %d\n", |
|
__func__, status); |
|
return; |
|
} |
|
|
|
/* tell the tty driver that something has changed */ |
|
if (edge_port->open) |
|
tty_port_tty_wakeup(&edge_port->port->port); |
|
|
|
/* we have completed the command */ |
|
edge_port->commandPending = false; |
|
wake_up(&edge_port->wait_command); |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* Driver tty interface functions |
|
*****************************************************************************/ |
|
|
|
/***************************************************************************** |
|
* SerialOpen |
|
* this function is called by the tty driver when a port is opened |
|
* If successful, we return 0 |
|
* Otherwise we return a negative error number. |
|
*****************************************************************************/ |
|
static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) |
|
{ |
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
|
struct device *dev = &port->dev; |
|
struct usb_serial *serial; |
|
struct edgeport_serial *edge_serial; |
|
int response; |
|
|
|
if (edge_port == NULL) |
|
return -ENODEV; |
|
|
|
/* see if we've set up our endpoint info yet (can't set it up |
|
in edge_startup as the structures were not set up at that time.) */ |
|
serial = port->serial; |
|
edge_serial = usb_get_serial_data(serial); |
|
if (edge_serial == NULL) |
|
return -ENODEV; |
|
if (edge_serial->interrupt_in_buffer == NULL) { |
|
struct usb_serial_port *port0 = serial->port[0]; |
|
|
|
/* not set up yet, so do it now */ |
|
edge_serial->interrupt_in_buffer = |
|
port0->interrupt_in_buffer; |
|
edge_serial->interrupt_in_endpoint = |
|
port0->interrupt_in_endpointAddress; |
|
edge_serial->interrupt_read_urb = port0->interrupt_in_urb; |
|
edge_serial->bulk_in_buffer = port0->bulk_in_buffer; |
|
edge_serial->bulk_in_endpoint = |
|
port0->bulk_in_endpointAddress; |
|
edge_serial->read_urb = port0->read_urb; |
|
edge_serial->bulk_out_endpoint = |
|
port0->bulk_out_endpointAddress; |
|
|
|
/* set up our interrupt urb */ |
|
usb_fill_int_urb(edge_serial->interrupt_read_urb, |
|
serial->dev, |
|
usb_rcvintpipe(serial->dev, |
|
port0->interrupt_in_endpointAddress), |
|
port0->interrupt_in_buffer, |
|
edge_serial->interrupt_read_urb->transfer_buffer_length, |
|
edge_interrupt_callback, edge_serial, |
|
edge_serial->interrupt_read_urb->interval); |
|
|
|
/* set up our bulk in urb */ |
|
usb_fill_bulk_urb(edge_serial->read_urb, serial->dev, |
|
usb_rcvbulkpipe(serial->dev, |
|
port0->bulk_in_endpointAddress), |
|
port0->bulk_in_buffer, |
|
edge_serial->read_urb->transfer_buffer_length, |
|
edge_bulk_in_callback, edge_serial); |
|
edge_serial->read_in_progress = false; |
|
|
|
/* start interrupt read for this edgeport |
|
* this interrupt will continue as long |
|
* as the edgeport is connected */ |
|
response = usb_submit_urb(edge_serial->interrupt_read_urb, |
|
GFP_KERNEL); |
|
if (response) { |
|
dev_err(dev, "%s - Error %d submitting control urb\n", |
|
__func__, response); |
|
} |
|
} |
|
|
|
/* initialize our wait queues */ |
|
init_waitqueue_head(&edge_port->wait_open); |
|
init_waitqueue_head(&edge_port->wait_chase); |
|
init_waitqueue_head(&edge_port->wait_command); |
|
|
|
/* initialize our port settings */ |
|
edge_port->txCredits = 0; /* Can't send any data yet */ |
|
/* Must always set this bit to enable ints! */ |
|
edge_port->shadowMCR = MCR_MASTER_IE; |
|
edge_port->chaseResponsePending = false; |
|
|
|
/* send a open port command */ |
|
edge_port->openPending = true; |
|
edge_port->open = false; |
|
response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0); |
|
|
|
if (response < 0) { |
|
dev_err(dev, "%s - error sending open port command\n", __func__); |
|
edge_port->openPending = false; |
|
return -ENODEV; |
|
} |
|
|
|
/* now wait for the port to be completely opened */ |
|
wait_event_timeout(edge_port->wait_open, !edge_port->openPending, |
|
OPEN_TIMEOUT); |
|
|
|
if (!edge_port->open) { |
|
/* open timed out */ |
|
dev_dbg(dev, "%s - open timedout\n", __func__); |
|
edge_port->openPending = false; |
|
return -ENODEV; |
|
} |
|
|
|
/* create the txfifo */ |
|
edge_port->txfifo.head = 0; |
|
edge_port->txfifo.tail = 0; |
|
edge_port->txfifo.count = 0; |
|
edge_port->txfifo.size = edge_port->maxTxCredits; |
|
edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL); |
|
|
|
if (!edge_port->txfifo.fifo) { |
|
edge_close(port); |
|
return -ENOMEM; |
|
} |
|
|
|
/* Allocate a URB for the write */ |
|
edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL); |
|
edge_port->write_in_progress = false; |
|
|
|
if (!edge_port->write_urb) { |
|
edge_close(port); |
|
return -ENOMEM; |
|
} |
|
|
|
dev_dbg(dev, "%s - Initialize TX fifo to %d bytes\n", |
|
__func__, edge_port->maxTxCredits); |
|
|
|
return 0; |
|
} |
|
|
|
|
|
/************************************************************************ |
|
* |
|
* block_until_chase_response |
|
* |
|
* This function will block the close until one of the following: |
|
* 1. Response to our Chase comes from Edgeport |
|
* 2. A timeout of 10 seconds without activity has expired |
|
* (1K of Edgeport data @ 2400 baud ==> 4 sec to empty) |
|
* |
|
************************************************************************/ |
|
static void block_until_chase_response(struct edgeport_port *edge_port) |
|
{ |
|
struct device *dev = &edge_port->port->dev; |
|
DEFINE_WAIT(wait); |
|
__u16 lastCredits; |
|
int timeout = 1*HZ; |
|
int loop = 10; |
|
|
|
while (1) { |
|
/* Save Last credits */ |
|
lastCredits = edge_port->txCredits; |
|
|
|
/* Did we get our Chase response */ |
|
if (!edge_port->chaseResponsePending) { |
|
dev_dbg(dev, "%s - Got Chase Response\n", __func__); |
|
|
|
/* did we get all of our credit back? */ |
|
if (edge_port->txCredits == edge_port->maxTxCredits) { |
|
dev_dbg(dev, "%s - Got all credits\n", __func__); |
|
return; |
|
} |
|
} |
|
|
|
/* Block the thread for a while */ |
|
prepare_to_wait(&edge_port->wait_chase, &wait, |
|
TASK_UNINTERRUPTIBLE); |
|
schedule_timeout(timeout); |
|
finish_wait(&edge_port->wait_chase, &wait); |
|
|
|
if (lastCredits == edge_port->txCredits) { |
|
/* No activity.. count down. */ |
|
loop--; |
|
if (loop == 0) { |
|
edge_port->chaseResponsePending = false; |
|
dev_dbg(dev, "%s - Chase TIMEOUT\n", __func__); |
|
return; |
|
} |
|
} else { |
|
/* Reset timeout value back to 10 seconds */ |
|
dev_dbg(dev, "%s - Last %d, Current %d\n", __func__, |
|
lastCredits, edge_port->txCredits); |
|
loop = 10; |
|
} |
|
} |
|
} |
|
|
|
|
|
/************************************************************************ |
|
* |
|
* block_until_tx_empty |
|
* |
|
* This function will block the close until one of the following: |
|
* 1. TX count are 0 |
|
* 2. The edgeport has stopped |
|
* 3. A timeout of 3 seconds without activity has expired |
|
* |
|
************************************************************************/ |
|
static void block_until_tx_empty(struct edgeport_port *edge_port) |
|
{ |
|
struct device *dev = &edge_port->port->dev; |
|
DEFINE_WAIT(wait); |
|
struct TxFifo *fifo = &edge_port->txfifo; |
|
__u32 lastCount; |
|
int timeout = HZ/10; |
|
int loop = 30; |
|
|
|
while (1) { |
|
/* Save Last count */ |
|
lastCount = fifo->count; |
|
|
|
/* Is the Edgeport Buffer empty? */ |
|
if (lastCount == 0) { |
|
dev_dbg(dev, "%s - TX Buffer Empty\n", __func__); |
|
return; |
|
} |
|
|
|
/* Block the thread for a while */ |
|
prepare_to_wait(&edge_port->wait_chase, &wait, |
|
TASK_UNINTERRUPTIBLE); |
|
schedule_timeout(timeout); |
|
finish_wait(&edge_port->wait_chase, &wait); |
|
|
|
dev_dbg(dev, "%s wait\n", __func__); |
|
|
|
if (lastCount == fifo->count) { |
|
/* No activity.. count down. */ |
|
loop--; |
|
if (loop == 0) { |
|
dev_dbg(dev, "%s - TIMEOUT\n", __func__); |
|
return; |
|
} |
|
} else { |
|
/* Reset timeout value back to seconds */ |
|
loop = 30; |
|
} |
|
} |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* edge_close |
|
* this function is called by the tty driver when a port is closed |
|
*****************************************************************************/ |
|
static void edge_close(struct usb_serial_port *port) |
|
{ |
|
struct edgeport_serial *edge_serial; |
|
struct edgeport_port *edge_port; |
|
int status; |
|
|
|
edge_serial = usb_get_serial_data(port->serial); |
|
edge_port = usb_get_serial_port_data(port); |
|
if (edge_serial == NULL || edge_port == NULL) |
|
return; |
|
|
|
/* block until tx is empty */ |
|
block_until_tx_empty(edge_port); |
|
|
|
edge_port->closePending = true; |
|
|
|
if (!edge_serial->is_epic || |
|
edge_serial->epic_descriptor.Supports.IOSPChase) { |
|
/* flush and chase */ |
|
edge_port->chaseResponsePending = true; |
|
|
|
dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); |
|
status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); |
|
if (status == 0) |
|
/* block until chase finished */ |
|
block_until_chase_response(edge_port); |
|
else |
|
edge_port->chaseResponsePending = false; |
|
} |
|
|
|
if (!edge_serial->is_epic || |
|
edge_serial->epic_descriptor.Supports.IOSPClose) { |
|
/* close the port */ |
|
dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__); |
|
send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0); |
|
} |
|
|
|
/* port->close = true; */ |
|
edge_port->closePending = false; |
|
edge_port->open = false; |
|
edge_port->openPending = false; |
|
|
|
usb_kill_urb(edge_port->write_urb); |
|
|
|
if (edge_port->write_urb) { |
|
/* if this urb had a transfer buffer already |
|
(old transfer) free it */ |
|
kfree(edge_port->write_urb->transfer_buffer); |
|
usb_free_urb(edge_port->write_urb); |
|
edge_port->write_urb = NULL; |
|
} |
|
kfree(edge_port->txfifo.fifo); |
|
edge_port->txfifo.fifo = NULL; |
|
} |
|
|
|
/***************************************************************************** |
|
* SerialWrite |
|
* this function is called by the tty driver when data should be written |
|
* to the port. |
|
* If successful, we return the number of bytes written, otherwise we |
|
* return a negative error number. |
|
*****************************************************************************/ |
|
static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, |
|
const unsigned char *data, int count) |
|
{ |
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
|
struct TxFifo *fifo; |
|
int copySize; |
|
int bytesleft; |
|
int firsthalf; |
|
int secondhalf; |
|
unsigned long flags; |
|
|
|
if (edge_port == NULL) |
|
return -ENODEV; |
|
|
|
/* get a pointer to the Tx fifo */ |
|
fifo = &edge_port->txfifo; |
|
|
|
spin_lock_irqsave(&edge_port->ep_lock, flags); |
|
|
|
/* calculate number of bytes to put in fifo */ |
|
copySize = min((unsigned int)count, |
|
(edge_port->txCredits - fifo->count)); |
|
|
|
dev_dbg(&port->dev, "%s of %d byte(s) Fifo room %d -- will copy %d bytes\n", |
|
__func__, count, edge_port->txCredits - fifo->count, copySize); |
|
|
|
/* catch writes of 0 bytes which the tty driver likes to give us, |
|
and when txCredits is empty */ |
|
if (copySize == 0) { |
|
dev_dbg(&port->dev, "%s - copySize = Zero\n", __func__); |
|
goto finish_write; |
|
} |
|
|
|
/* queue the data |
|
* since we can never overflow the buffer we do not have to check for a |
|
* full condition |
|
* |
|
* the copy is done is two parts -- first fill to the end of the buffer |
|
* then copy the reset from the start of the buffer |
|
*/ |
|
bytesleft = fifo->size - fifo->head; |
|
firsthalf = min(bytesleft, copySize); |
|
dev_dbg(&port->dev, "%s - copy %d bytes of %d into fifo \n", __func__, |
|
firsthalf, bytesleft); |
|
|
|
/* now copy our data */ |
|
memcpy(&fifo->fifo[fifo->head], data, firsthalf); |
|
usb_serial_debug_data(&port->dev, __func__, firsthalf, &fifo->fifo[fifo->head]); |
|
|
|
/* update the index and size */ |
|
fifo->head += firsthalf; |
|
fifo->count += firsthalf; |
|
|
|
/* wrap the index */ |
|
if (fifo->head == fifo->size) |
|
fifo->head = 0; |
|
|
|
secondhalf = copySize-firsthalf; |
|
|
|
if (secondhalf) { |
|
dev_dbg(&port->dev, "%s - copy rest of data %d\n", __func__, secondhalf); |
|
memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf); |
|
usb_serial_debug_data(&port->dev, __func__, secondhalf, &fifo->fifo[fifo->head]); |
|
/* update the index and size */ |
|
fifo->count += secondhalf; |
|
fifo->head += secondhalf; |
|
/* No need to check for wrap since we can not get to end of |
|
* the fifo in this part |
|
*/ |
|
} |
|
|
|
finish_write: |
|
spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
|
|
|
send_more_port_data((struct edgeport_serial *) |
|
usb_get_serial_data(port->serial), edge_port); |
|
|
|
dev_dbg(&port->dev, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n", |
|
__func__, copySize, edge_port->txCredits, fifo->count); |
|
|
|
return copySize; |
|
} |
|
|
|
|
|
/************************************************************************ |
|
* |
|
* send_more_port_data() |
|
* |
|
* This routine attempts to write additional UART transmit data |
|
* to a port over the USB bulk pipe. It is called (1) when new |
|
* data has been written to a port's TxBuffer from higher layers |
|
* (2) when the peripheral sends us additional TxCredits indicating |
|
* that it can accept more Tx data for a given port; and (3) when |
|
* a bulk write completes successfully and we want to see if we |
|
* can transmit more. |
|
* |
|
************************************************************************/ |
|
static void send_more_port_data(struct edgeport_serial *edge_serial, |
|
struct edgeport_port *edge_port) |
|
{ |
|
struct TxFifo *fifo = &edge_port->txfifo; |
|
struct device *dev = &edge_port->port->dev; |
|
struct urb *urb; |
|
unsigned char *buffer; |
|
int status; |
|
int count; |
|
int bytesleft; |
|
int firsthalf; |
|
int secondhalf; |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&edge_port->ep_lock, flags); |
|
|
|
if (edge_port->write_in_progress || |
|
!edge_port->open || |
|
(fifo->count == 0)) { |
|
dev_dbg(dev, "%s EXIT - fifo %d, PendingWrite = %d\n", |
|
__func__, fifo->count, edge_port->write_in_progress); |
|
goto exit_send; |
|
} |
|
|
|
/* since the amount of data in the fifo will always fit into the |
|
* edgeport buffer we do not need to check the write length |
|
* |
|
* Do we have enough credits for this port to make it worthwhile |
|
* to bother queueing a write. If it's too small, say a few bytes, |
|
* it's better to wait for more credits so we can do a larger write. |
|
*/ |
|
if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) { |
|
dev_dbg(dev, "%s Not enough credit - fifo %d TxCredit %d\n", |
|
__func__, fifo->count, edge_port->txCredits); |
|
goto exit_send; |
|
} |
|
|
|
/* lock this write */ |
|
edge_port->write_in_progress = true; |
|
|
|
/* get a pointer to the write_urb */ |
|
urb = edge_port->write_urb; |
|
|
|
/* make sure transfer buffer is freed */ |
|
kfree(urb->transfer_buffer); |
|
urb->transfer_buffer = NULL; |
|
|
|
/* build the data header for the buffer and port that we are about |
|
to send out */ |
|
count = fifo->count; |
|
buffer = kmalloc(count+2, GFP_ATOMIC); |
|
if (!buffer) { |
|
edge_port->write_in_progress = false; |
|
goto exit_send; |
|
} |
|
buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->port_number, count); |
|
buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->port_number, count); |
|
|
|
/* now copy our data */ |
|
bytesleft = fifo->size - fifo->tail; |
|
firsthalf = min(bytesleft, count); |
|
memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf); |
|
fifo->tail += firsthalf; |
|
fifo->count -= firsthalf; |
|
if (fifo->tail == fifo->size) |
|
fifo->tail = 0; |
|
|
|
secondhalf = count-firsthalf; |
|
if (secondhalf) { |
|
memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], |
|
secondhalf); |
|
fifo->tail += secondhalf; |
|
fifo->count -= secondhalf; |
|
} |
|
|
|
if (count) |
|
usb_serial_debug_data(&edge_port->port->dev, __func__, count, &buffer[2]); |
|
|
|
/* fill up the urb with all of our data and submit it */ |
|
usb_fill_bulk_urb(urb, edge_serial->serial->dev, |
|
usb_sndbulkpipe(edge_serial->serial->dev, |
|
edge_serial->bulk_out_endpoint), |
|
buffer, count+2, |
|
edge_bulk_out_data_callback, edge_port); |
|
|
|
/* decrement the number of credits we have by the number we just sent */ |
|
edge_port->txCredits -= count; |
|
edge_port->port->icount.tx += count; |
|
|
|
status = usb_submit_urb(urb, GFP_ATOMIC); |
|
if (status) { |
|
/* something went wrong */ |
|
dev_err_console(edge_port->port, |
|
"%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", |
|
__func__, status); |
|
edge_port->write_in_progress = false; |
|
|
|
/* revert the credits as something bad happened. */ |
|
edge_port->txCredits += count; |
|
edge_port->port->icount.tx -= count; |
|
} |
|
dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n", |
|
__func__, count, edge_port->txCredits, fifo->count); |
|
|
|
exit_send: |
|
spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* edge_write_room |
|
* this function is called by the tty driver when it wants to know how |
|
* many bytes of data we can accept for a specific port. If successful, |
|
* we return the amount of room that we have for this port (the txCredits) |
|
* otherwise we return a negative error number. |
|
*****************************************************************************/ |
|
static int edge_write_room(struct tty_struct *tty) |
|
{ |
|
struct usb_serial_port *port = tty->driver_data; |
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
|
int room; |
|
unsigned long flags; |
|
|
|
if (edge_port == NULL) |
|
return 0; |
|
if (edge_port->closePending) |
|
return 0; |
|
|
|
if (!edge_port->open) { |
|
dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
|
return 0; |
|
} |
|
|
|
/* total of both buffers is still txCredit */ |
|
spin_lock_irqsave(&edge_port->ep_lock, flags); |
|
room = edge_port->txCredits - edge_port->txfifo.count; |
|
spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
|
|
|
dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); |
|
return room; |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* edge_chars_in_buffer |
|
* this function is called by the tty driver when it wants to know how |
|
* many bytes of data we currently have outstanding in the port (data that |
|
* has been written, but hasn't made it out the port yet) |
|
* If successful, we return the number of bytes left to be written in the |
|
* system, |
|
* Otherwise we return a negative error number. |
|
*****************************************************************************/ |
|
static int edge_chars_in_buffer(struct tty_struct *tty) |
|
{ |
|
struct usb_serial_port *port = tty->driver_data; |
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
|
int num_chars; |
|
unsigned long flags; |
|
|
|
if (edge_port == NULL) |
|
return 0; |
|
if (edge_port->closePending) |
|
return 0; |
|
|
|
if (!edge_port->open) { |
|
dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
|
return 0; |
|
} |
|
|
|
spin_lock_irqsave(&edge_port->ep_lock, flags); |
|
num_chars = edge_port->maxTxCredits - edge_port->txCredits + |
|
edge_port->txfifo.count; |
|
spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
|
if (num_chars) { |
|
dev_dbg(&port->dev, "%s - returns %d\n", __func__, num_chars); |
|
} |
|
|
|
return num_chars; |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* SerialThrottle |
|
* this function is called by the tty driver when it wants to stop the data |
|
* being read from the port. |
|
*****************************************************************************/ |
|
static void edge_throttle(struct tty_struct *tty) |
|
{ |
|
struct usb_serial_port *port = tty->driver_data; |
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
|
int status; |
|
|
|
if (edge_port == NULL) |
|
return; |
|
|
|
if (!edge_port->open) { |
|
dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
|
return; |
|
} |
|
|
|
/* if we are implementing XON/XOFF, send the stop character */ |
|
if (I_IXOFF(tty)) { |
|
unsigned char stop_char = STOP_CHAR(tty); |
|
status = edge_write(tty, port, &stop_char, 1); |
|
if (status <= 0) |
|
return; |
|
} |
|
|
|
/* if we are implementing RTS/CTS, toggle that line */ |
|
if (C_CRTSCTS(tty)) { |
|
edge_port->shadowMCR &= ~MCR_RTS; |
|
status = send_cmd_write_uart_register(edge_port, MCR, |
|
edge_port->shadowMCR); |
|
if (status != 0) |
|
return; |
|
} |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* edge_unthrottle |
|
* this function is called by the tty driver when it wants to resume the |
|
* data being read from the port (called after SerialThrottle is called) |
|
*****************************************************************************/ |
|
static void edge_unthrottle(struct tty_struct *tty) |
|
{ |
|
struct usb_serial_port *port = tty->driver_data; |
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
|
int status; |
|
|
|
if (edge_port == NULL) |
|
return; |
|
|
|
if (!edge_port->open) { |
|
dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
|
return; |
|
} |
|
|
|
/* if we are implementing XON/XOFF, send the start character */ |
|
if (I_IXOFF(tty)) { |
|
unsigned char start_char = START_CHAR(tty); |
|
status = edge_write(tty, port, &start_char, 1); |
|
if (status <= 0) |
|
return; |
|
} |
|
/* if we are implementing RTS/CTS, toggle that line */ |
|
if (C_CRTSCTS(tty)) { |
|
edge_port->shadowMCR |= MCR_RTS; |
|
send_cmd_write_uart_register(edge_port, MCR, |
|
edge_port->shadowMCR); |
|
} |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* SerialSetTermios |
|
* this function is called by the tty driver when it wants to change |
|
* the termios structure |
|
*****************************************************************************/ |
|
static void edge_set_termios(struct tty_struct *tty, |
|
struct usb_serial_port *port, struct ktermios *old_termios) |
|
{ |
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
|
|
|
if (edge_port == NULL) |
|
return; |
|
|
|
if (!edge_port->open) { |
|
dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
|
return; |
|
} |
|
|
|
/* change the port settings to the new ones specified */ |
|
change_port_settings(tty, edge_port, old_termios); |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* get_lsr_info - get line status register info |
|
* |
|
* Purpose: Let user call ioctl() to get info when the UART physically |
|
* is emptied. On bus types like RS485, the transmitter must |
|
* release the bus after transmitting. This must be done when |
|
* the transmit shift register is empty, not be done when the |
|
* transmit holding register is empty. This functionality |
|
* allows an RS485 driver to be written in user space. |
|
*****************************************************************************/ |
|
static int get_lsr_info(struct edgeport_port *edge_port, |
|
unsigned int __user *value) |
|
{ |
|
unsigned int result = 0; |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&edge_port->ep_lock, flags); |
|
if (edge_port->maxTxCredits == edge_port->txCredits && |
|
edge_port->txfifo.count == 0) { |
|
dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__); |
|
result = TIOCSER_TEMT; |
|
} |
|
spin_unlock_irqrestore(&edge_port->ep_lock, flags); |
|
|
|
if (copy_to_user(value, &result, sizeof(int))) |
|
return -EFAULT; |
|
return 0; |
|
} |
|
|
|
static int edge_tiocmset(struct tty_struct *tty, |
|
unsigned int set, unsigned int clear) |
|
{ |
|
struct usb_serial_port *port = tty->driver_data; |
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
|
unsigned int mcr; |
|
|
|
mcr = edge_port->shadowMCR; |
|
if (set & TIOCM_RTS) |
|
mcr |= MCR_RTS; |
|
if (set & TIOCM_DTR) |
|
mcr |= MCR_DTR; |
|
if (set & TIOCM_LOOP) |
|
mcr |= MCR_LOOPBACK; |
|
|
|
if (clear & TIOCM_RTS) |
|
mcr &= ~MCR_RTS; |
|
if (clear & TIOCM_DTR) |
|
mcr &= ~MCR_DTR; |
|
if (clear & TIOCM_LOOP) |
|
mcr &= ~MCR_LOOPBACK; |
|
|
|
edge_port->shadowMCR = mcr; |
|
|
|
send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); |
|
|
|
return 0; |
|
} |
|
|
|
static int edge_tiocmget(struct tty_struct *tty) |
|
{ |
|
struct usb_serial_port *port = tty->driver_data; |
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
|
unsigned int result = 0; |
|
unsigned int msr; |
|
unsigned int mcr; |
|
|
|
msr = edge_port->shadowMSR; |
|
mcr = edge_port->shadowMCR; |
|
result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ |
|
| ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ |
|
| ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ |
|
| ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ |
|
| ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ |
|
| ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ |
|
|
|
return result; |
|
} |
|
|
|
static int get_serial_info(struct tty_struct *tty, |
|
struct serial_struct *ss) |
|
{ |
|
struct usb_serial_port *port = tty->driver_data; |
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
|
|
|
ss->type = PORT_16550A; |
|
ss->line = edge_port->port->minor; |
|
ss->port = edge_port->port->port_number; |
|
ss->irq = 0; |
|
ss->xmit_fifo_size = edge_port->maxTxCredits; |
|
ss->baud_base = 9600; |
|
ss->close_delay = 5*HZ; |
|
ss->closing_wait = 30*HZ; |
|
return 0; |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* SerialIoctl |
|
* this function handles any ioctl calls to the driver |
|
*****************************************************************************/ |
|
static int edge_ioctl(struct tty_struct *tty, |
|
unsigned int cmd, unsigned long arg) |
|
{ |
|
struct usb_serial_port *port = tty->driver_data; |
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
|
|
|
switch (cmd) { |
|
case TIOCSERGETLSR: |
|
dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__); |
|
return get_lsr_info(edge_port, (unsigned int __user *) arg); |
|
} |
|
return -ENOIOCTLCMD; |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* SerialBreak |
|
* this function sends a break to the port |
|
*****************************************************************************/ |
|
static void edge_break(struct tty_struct *tty, int break_state) |
|
{ |
|
struct usb_serial_port *port = tty->driver_data; |
|
struct edgeport_port *edge_port = usb_get_serial_port_data(port); |
|
struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial); |
|
int status; |
|
|
|
if (!edge_serial->is_epic || |
|
edge_serial->epic_descriptor.Supports.IOSPChase) { |
|
/* flush and chase */ |
|
edge_port->chaseResponsePending = true; |
|
|
|
dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); |
|
status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); |
|
if (status == 0) { |
|
/* block until chase finished */ |
|
block_until_chase_response(edge_port); |
|
} else { |
|
edge_port->chaseResponsePending = false; |
|
} |
|
} |
|
|
|
if (!edge_serial->is_epic || |
|
edge_serial->epic_descriptor.Supports.IOSPSetClrBreak) { |
|
if (break_state == -1) { |
|
dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__); |
|
status = send_iosp_ext_cmd(edge_port, |
|
IOSP_CMD_SET_BREAK, 0); |
|
} else { |
|
dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__); |
|
status = send_iosp_ext_cmd(edge_port, |
|
IOSP_CMD_CLEAR_BREAK, 0); |
|
} |
|
if (status) |
|
dev_dbg(&port->dev, "%s - error sending break set/clear command.\n", |
|
__func__); |
|
} |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* process_rcvd_data |
|
* this function handles the data received on the bulk in pipe. |
|
*****************************************************************************/ |
|
static void process_rcvd_data(struct edgeport_serial *edge_serial, |
|
unsigned char *buffer, __u16 bufferLength) |
|
{ |
|
struct usb_serial *serial = edge_serial->serial; |
|
struct device *dev = &serial->dev->dev; |
|
struct usb_serial_port *port; |
|
struct edgeport_port *edge_port; |
|
__u16 lastBufferLength; |
|
__u16 rxLen; |
|
|
|
lastBufferLength = bufferLength + 1; |
|
|
|
while (bufferLength > 0) { |
|
/* failsafe incase we get a message that we don't understand */ |
|
if (lastBufferLength == bufferLength) { |
|
dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__); |
|
break; |
|
} |
|
lastBufferLength = bufferLength; |
|
|
|
switch (edge_serial->rxState) { |
|
case EXPECT_HDR1: |
|
edge_serial->rxHeader1 = *buffer; |
|
++buffer; |
|
--bufferLength; |
|
|
|
if (bufferLength == 0) { |
|
edge_serial->rxState = EXPECT_HDR2; |
|
break; |
|
} |
|
fallthrough; |
|
case EXPECT_HDR2: |
|
edge_serial->rxHeader2 = *buffer; |
|
++buffer; |
|
--bufferLength; |
|
|
|
dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__, |
|
edge_serial->rxHeader1, edge_serial->rxHeader2); |
|
/* Process depending on whether this header is |
|
* data or status */ |
|
|
|
if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) { |
|
/* Decode this status header and go to |
|
* EXPECT_HDR1 (if we can process the status |
|
* with only 2 bytes), or go to EXPECT_HDR3 to |
|
* get the third byte. */ |
|
edge_serial->rxPort = |
|
IOSP_GET_HDR_PORT(edge_serial->rxHeader1); |
|
edge_serial->rxStatusCode = |
|
IOSP_GET_STATUS_CODE( |
|
edge_serial->rxHeader1); |
|
|
|
if (!IOSP_STATUS_IS_2BYTE( |
|
edge_serial->rxStatusCode)) { |
|
/* This status needs additional bytes. |
|
* Save what we have and then wait for |
|
* more data. |
|
*/ |
|
edge_serial->rxStatusParam |
|
= edge_serial->rxHeader2; |
|
edge_serial->rxState = EXPECT_HDR3; |
|
break; |
|
} |
|
/* We have all the header bytes, process the |
|
status now */ |
|
process_rcvd_status(edge_serial, |
|
edge_serial->rxHeader2, 0); |
|
edge_serial->rxState = EXPECT_HDR1; |
|
break; |
|
} |
|
|
|
edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1); |
|
edge_serial->rxBytesRemaining = IOSP_GET_HDR_DATA_LEN(edge_serial->rxHeader1, |
|
edge_serial->rxHeader2); |
|
dev_dbg(dev, "%s - Data for Port %u Len %u\n", __func__, |
|
edge_serial->rxPort, |
|
edge_serial->rxBytesRemaining); |
|
|
|
if (bufferLength == 0) { |
|
edge_serial->rxState = EXPECT_DATA; |
|
break; |
|
} |
|
fallthrough; |
|
case EXPECT_DATA: /* Expect data */ |
|
if (bufferLength < edge_serial->rxBytesRemaining) { |
|
rxLen = bufferLength; |
|
/* Expect data to start next buffer */ |
|
edge_serial->rxState = EXPECT_DATA; |
|
} else { |
|
/* BufLen >= RxBytesRemaining */ |
|
rxLen = edge_serial->rxBytesRemaining; |
|
/* Start another header next time */ |
|
edge_serial->rxState = EXPECT_HDR1; |
|
} |
|
|
|
bufferLength -= rxLen; |
|
edge_serial->rxBytesRemaining -= rxLen; |
|
|
|
/* spit this data back into the tty driver if this |
|
port is open */ |
|
if (rxLen && edge_serial->rxPort < serial->num_ports) { |
|
port = serial->port[edge_serial->rxPort]; |
|
edge_port = usb_get_serial_port_data(port); |
|
if (edge_port && edge_port->open) { |
|
dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n", |
|
__func__, rxLen, |
|
edge_serial->rxPort); |
|
edge_tty_recv(edge_port->port, buffer, |
|
rxLen); |
|
edge_port->port->icount.rx += rxLen; |
|
} |
|
} |
|
buffer += rxLen; |
|
break; |
|
|
|
case EXPECT_HDR3: /* Expect 3rd byte of status header */ |
|
edge_serial->rxHeader3 = *buffer; |
|
++buffer; |
|
--bufferLength; |
|
|
|
/* We have all the header bytes, process the |
|
status now */ |
|
process_rcvd_status(edge_serial, |
|
edge_serial->rxStatusParam, |
|
edge_serial->rxHeader3); |
|
edge_serial->rxState = EXPECT_HDR1; |
|
break; |
|
} |
|
} |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* process_rcvd_status |
|
* this function handles the any status messages received on the |
|
* bulk in pipe. |
|
*****************************************************************************/ |
|
static void process_rcvd_status(struct edgeport_serial *edge_serial, |
|
__u8 byte2, __u8 byte3) |
|
{ |
|
struct usb_serial_port *port; |
|
struct edgeport_port *edge_port; |
|
struct tty_struct *tty; |
|
struct device *dev; |
|
__u8 code = edge_serial->rxStatusCode; |
|
|
|
/* switch the port pointer to the one being currently talked about */ |
|
if (edge_serial->rxPort >= edge_serial->serial->num_ports) |
|
return; |
|
port = edge_serial->serial->port[edge_serial->rxPort]; |
|
edge_port = usb_get_serial_port_data(port); |
|
if (edge_port == NULL) { |
|
dev_err(&edge_serial->serial->dev->dev, |
|
"%s - edge_port == NULL for port %d\n", |
|
__func__, edge_serial->rxPort); |
|
return; |
|
} |
|
dev = &port->dev; |
|
|
|
if (code == IOSP_EXT_STATUS) { |
|
switch (byte2) { |
|
case IOSP_EXT_STATUS_CHASE_RSP: |
|
/* we want to do EXT status regardless of port |
|
* open/closed */ |
|
dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n", |
|
__func__, edge_serial->rxPort, byte3); |
|
/* Currently, the only EXT_STATUS is Chase, so process |
|
* here instead of one more call to one more subroutine |
|
* If/when more EXT_STATUS, there'll be more work to do |
|
* Also, we currently clear flag and close the port |
|
* regardless of content of above's Byte3. |
|
* We could choose to do something else when Byte3 says |
|
* Timeout on Chase from Edgeport, like wait longer in |
|
* block_until_chase_response, but for now we don't. |
|
*/ |
|
edge_port->chaseResponsePending = false; |
|
wake_up(&edge_port->wait_chase); |
|
return; |
|
|
|
case IOSP_EXT_STATUS_RX_CHECK_RSP: |
|
dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", |
|
__func__, edge_serial->rxPort, byte3); |
|
/* Port->RxCheckRsp = true; */ |
|
return; |
|
} |
|
} |
|
|
|
if (code == IOSP_STATUS_OPEN_RSP) { |
|
edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3); |
|
edge_port->maxTxCredits = edge_port->txCredits; |
|
dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n", |
|
__func__, edge_serial->rxPort, byte2, edge_port->txCredits); |
|
handle_new_msr(edge_port, byte2); |
|
|
|
/* send the current line settings to the port so we are |
|
in sync with any further termios calls */ |
|
tty = tty_port_tty_get(&edge_port->port->port); |
|
if (tty) { |
|
change_port_settings(tty, |
|
edge_port, &tty->termios); |
|
tty_kref_put(tty); |
|
} |
|
|
|
/* we have completed the open */ |
|
edge_port->openPending = false; |
|
edge_port->open = true; |
|
wake_up(&edge_port->wait_open); |
|
return; |
|
} |
|
|
|
/* If port is closed, silently discard all rcvd status. We can |
|
* have cases where buffered status is received AFTER the close |
|
* port command is sent to the Edgeport. |
|
*/ |
|
if (!edge_port->open || edge_port->closePending) |
|
return; |
|
|
|
switch (code) { |
|
/* Not currently sent by Edgeport */ |
|
case IOSP_STATUS_LSR: |
|
dev_dbg(dev, "%s - Port %u LSR Status = %02x\n", |
|
__func__, edge_serial->rxPort, byte2); |
|
handle_new_lsr(edge_port, false, byte2, 0); |
|
break; |
|
|
|
case IOSP_STATUS_LSR_DATA: |
|
dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n", |
|
__func__, edge_serial->rxPort, byte2, byte3); |
|
/* byte2 is LSR Register */ |
|
/* byte3 is broken data byte */ |
|
handle_new_lsr(edge_port, true, byte2, byte3); |
|
break; |
|
/* |
|
* case IOSP_EXT_4_STATUS: |
|
* dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n", |
|
* __func__, edge_serial->rxPort, byte2, byte3); |
|
* break; |
|
*/ |
|
case IOSP_STATUS_MSR: |
|
dev_dbg(dev, "%s - Port %u MSR Status = %02x\n", |
|
__func__, edge_serial->rxPort, byte2); |
|
/* |
|
* Process this new modem status and generate appropriate |
|
* events, etc, based on the new status. This routine |
|
* also saves the MSR in Port->ShadowMsr. |
|
*/ |
|
handle_new_msr(edge_port, byte2); |
|
break; |
|
|
|
default: |
|
dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code); |
|
break; |
|
} |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* edge_tty_recv |
|
* this function passes data on to the tty flip buffer |
|
*****************************************************************************/ |
|
static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, |
|
int length) |
|
{ |
|
int cnt; |
|
|
|
cnt = tty_insert_flip_string(&port->port, data, length); |
|
if (cnt < length) { |
|
dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", |
|
__func__, length - cnt); |
|
} |
|
data += cnt; |
|
length -= cnt; |
|
|
|
tty_flip_buffer_push(&port->port); |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* handle_new_msr |
|
* this function handles any change to the msr register for a port. |
|
*****************************************************************************/ |
|
static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr) |
|
{ |
|
struct async_icount *icount; |
|
|
|
if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | |
|
EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { |
|
icount = &edge_port->port->icount; |
|
|
|
/* update input line counters */ |
|
if (newMsr & EDGEPORT_MSR_DELTA_CTS) |
|
icount->cts++; |
|
if (newMsr & EDGEPORT_MSR_DELTA_DSR) |
|
icount->dsr++; |
|
if (newMsr & EDGEPORT_MSR_DELTA_CD) |
|
icount->dcd++; |
|
if (newMsr & EDGEPORT_MSR_DELTA_RI) |
|
icount->rng++; |
|
wake_up_interruptible(&edge_port->port->port.delta_msr_wait); |
|
} |
|
|
|
/* Save the new modem status */ |
|
edge_port->shadowMSR = newMsr & 0xf0; |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* handle_new_lsr |
|
* this function handles any change to the lsr register for a port. |
|
*****************************************************************************/ |
|
static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, |
|
__u8 lsr, __u8 data) |
|
{ |
|
__u8 newLsr = (__u8) (lsr & (__u8) |
|
(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK)); |
|
struct async_icount *icount; |
|
|
|
edge_port->shadowLSR = lsr; |
|
|
|
if (newLsr & LSR_BREAK) { |
|
/* |
|
* Parity and Framing errors only count if they |
|
* occur exclusive of a break being |
|
* received. |
|
*/ |
|
newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); |
|
} |
|
|
|
/* Place LSR data byte into Rx buffer */ |
|
if (lsrData) |
|
edge_tty_recv(edge_port->port, &data, 1); |
|
|
|
/* update input line counters */ |
|
icount = &edge_port->port->icount; |
|
if (newLsr & LSR_BREAK) |
|
icount->brk++; |
|
if (newLsr & LSR_OVER_ERR) |
|
icount->overrun++; |
|
if (newLsr & LSR_PAR_ERR) |
|
icount->parity++; |
|
if (newLsr & LSR_FRM_ERR) |
|
icount->frame++; |
|
} |
|
|
|
|
|
/**************************************************************************** |
|
* sram_write |
|
* writes a number of bytes to the Edgeport device's sram starting at the |
|
* given address. |
|
* If successful returns the number of bytes written, otherwise it returns |
|
* a negative error number of the problem. |
|
****************************************************************************/ |
|
static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, |
|
__u16 length, const __u8 *data) |
|
{ |
|
int result; |
|
__u16 current_length; |
|
unsigned char *transfer_buffer; |
|
|
|
dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length); |
|
|
|
transfer_buffer = kmalloc(64, GFP_KERNEL); |
|
if (!transfer_buffer) |
|
return -ENOMEM; |
|
|
|
/* need to split these writes up into 64 byte chunks */ |
|
result = 0; |
|
while (length > 0) { |
|
if (length > 64) |
|
current_length = 64; |
|
else |
|
current_length = length; |
|
|
|
/* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */ |
|
memcpy(transfer_buffer, data, current_length); |
|
result = usb_control_msg(serial->dev, |
|
usb_sndctrlpipe(serial->dev, 0), |
|
USB_REQUEST_ION_WRITE_RAM, |
|
0x40, addr, extAddr, transfer_buffer, |
|
current_length, 300); |
|
if (result < 0) |
|
break; |
|
length -= current_length; |
|
addr += current_length; |
|
data += current_length; |
|
} |
|
|
|
kfree(transfer_buffer); |
|
return result; |
|
} |
|
|
|
|
|
/**************************************************************************** |
|
* rom_write |
|
* writes a number of bytes to the Edgeport device's ROM starting at the |
|
* given address. |
|
* If successful returns the number of bytes written, otherwise it returns |
|
* a negative error number of the problem. |
|
****************************************************************************/ |
|
static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, |
|
__u16 length, const __u8 *data) |
|
{ |
|
int result; |
|
__u16 current_length; |
|
unsigned char *transfer_buffer; |
|
|
|
transfer_buffer = kmalloc(64, GFP_KERNEL); |
|
if (!transfer_buffer) |
|
return -ENOMEM; |
|
|
|
/* need to split these writes up into 64 byte chunks */ |
|
result = 0; |
|
while (length > 0) { |
|
if (length > 64) |
|
current_length = 64; |
|
else |
|
current_length = length; |
|
memcpy(transfer_buffer, data, current_length); |
|
result = usb_control_msg(serial->dev, |
|
usb_sndctrlpipe(serial->dev, 0), |
|
USB_REQUEST_ION_WRITE_ROM, 0x40, |
|
addr, extAddr, |
|
transfer_buffer, current_length, 300); |
|
if (result < 0) |
|
break; |
|
length -= current_length; |
|
addr += current_length; |
|
data += current_length; |
|
} |
|
|
|
kfree(transfer_buffer); |
|
return result; |
|
} |
|
|
|
|
|
/**************************************************************************** |
|
* rom_read |
|
* reads a number of bytes from the Edgeport device starting at the given |
|
* address. |
|
* Returns zero on success or a negative error number. |
|
****************************************************************************/ |
|
static int rom_read(struct usb_serial *serial, __u16 extAddr, |
|
__u16 addr, __u16 length, __u8 *data) |
|
{ |
|
int result; |
|
__u16 current_length; |
|
unsigned char *transfer_buffer; |
|
|
|
transfer_buffer = kmalloc(64, GFP_KERNEL); |
|
if (!transfer_buffer) |
|
return -ENOMEM; |
|
|
|
/* need to split these reads up into 64 byte chunks */ |
|
result = 0; |
|
while (length > 0) { |
|
if (length > 64) |
|
current_length = 64; |
|
else |
|
current_length = length; |
|
result = usb_control_msg(serial->dev, |
|
usb_rcvctrlpipe(serial->dev, 0), |
|
USB_REQUEST_ION_READ_ROM, |
|
0xC0, addr, extAddr, transfer_buffer, |
|
current_length, 300); |
|
if (result < current_length) { |
|
if (result >= 0) |
|
result = -EIO; |
|
break; |
|
} |
|
memcpy(data, transfer_buffer, current_length); |
|
length -= current_length; |
|
addr += current_length; |
|
data += current_length; |
|
|
|
result = 0; |
|
} |
|
|
|
kfree(transfer_buffer); |
|
return result; |
|
} |
|
|
|
|
|
/**************************************************************************** |
|
* send_iosp_ext_cmd |
|
* Is used to send a IOSP message to the Edgeport device |
|
****************************************************************************/ |
|
static int send_iosp_ext_cmd(struct edgeport_port *edge_port, |
|
__u8 command, __u8 param) |
|
{ |
|
unsigned char *buffer; |
|
unsigned char *currentCommand; |
|
int length = 0; |
|
int status = 0; |
|
|
|
buffer = kmalloc(10, GFP_ATOMIC); |
|
if (!buffer) |
|
return -ENOMEM; |
|
|
|
currentCommand = buffer; |
|
|
|
MAKE_CMD_EXT_CMD(¤tCommand, &length, edge_port->port->port_number, |
|
command, param); |
|
|
|
status = write_cmd_usb(edge_port, buffer, length); |
|
if (status) { |
|
/* something bad happened, let's free up the memory */ |
|
kfree(buffer); |
|
} |
|
|
|
return status; |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* write_cmd_usb |
|
* this function writes the given buffer out to the bulk write endpoint. |
|
*****************************************************************************/ |
|
static int write_cmd_usb(struct edgeport_port *edge_port, |
|
unsigned char *buffer, int length) |
|
{ |
|
struct edgeport_serial *edge_serial = |
|
usb_get_serial_data(edge_port->port->serial); |
|
struct device *dev = &edge_port->port->dev; |
|
int status = 0; |
|
struct urb *urb; |
|
|
|
usb_serial_debug_data(dev, __func__, length, buffer); |
|
|
|
/* Allocate our next urb */ |
|
urb = usb_alloc_urb(0, GFP_ATOMIC); |
|
if (!urb) |
|
return -ENOMEM; |
|
|
|
atomic_inc(&CmdUrbs); |
|
dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n", |
|
__func__, urb, atomic_read(&CmdUrbs)); |
|
|
|
usb_fill_bulk_urb(urb, edge_serial->serial->dev, |
|
usb_sndbulkpipe(edge_serial->serial->dev, |
|
edge_serial->bulk_out_endpoint), |
|
buffer, length, edge_bulk_out_cmd_callback, edge_port); |
|
|
|
edge_port->commandPending = true; |
|
status = usb_submit_urb(urb, GFP_ATOMIC); |
|
|
|
if (status) { |
|
/* something went wrong */ |
|
dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n", |
|
__func__, status); |
|
usb_free_urb(urb); |
|
atomic_dec(&CmdUrbs); |
|
return status; |
|
} |
|
|
|
#if 0 |
|
wait_event(&edge_port->wait_command, !edge_port->commandPending); |
|
|
|
if (edge_port->commandPending) { |
|
/* command timed out */ |
|
dev_dbg(dev, "%s - command timed out\n", __func__); |
|
status = -EINVAL; |
|
} |
|
#endif |
|
return status; |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* send_cmd_write_baud_rate |
|
* this function sends the proper command to change the baud rate of the |
|
* specified port. |
|
*****************************************************************************/ |
|
static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, |
|
int baudRate) |
|
{ |
|
struct edgeport_serial *edge_serial = |
|
usb_get_serial_data(edge_port->port->serial); |
|
struct device *dev = &edge_port->port->dev; |
|
unsigned char *cmdBuffer; |
|
unsigned char *currCmd; |
|
int cmdLen = 0; |
|
int divisor; |
|
int status; |
|
u32 number = edge_port->port->port_number; |
|
|
|
if (edge_serial->is_epic && |
|
!edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) { |
|
dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port, baud = %d\n", |
|
baudRate); |
|
return 0; |
|
} |
|
|
|
dev_dbg(dev, "%s - baud = %d\n", __func__, baudRate); |
|
|
|
status = calc_baud_rate_divisor(dev, baudRate, &divisor); |
|
if (status) { |
|
dev_err(dev, "%s - bad baud rate\n", __func__); |
|
return status; |
|
} |
|
|
|
/* Alloc memory for the string of commands. */ |
|
cmdBuffer = kmalloc(0x100, GFP_ATOMIC); |
|
if (!cmdBuffer) |
|
return -ENOMEM; |
|
|
|
currCmd = cmdBuffer; |
|
|
|
/* Enable access to divisor latch */ |
|
MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE); |
|
|
|
/* Write the divisor itself */ |
|
MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor)); |
|
MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor)); |
|
|
|
/* Restore original value to disable access to divisor latch */ |
|
MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, |
|
edge_port->shadowLCR); |
|
|
|
status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); |
|
if (status) { |
|
/* something bad happened, let's free up the memory */ |
|
kfree(cmdBuffer); |
|
} |
|
|
|
return status; |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* calc_baud_rate_divisor |
|
* this function calculates the proper baud rate divisor for the specified |
|
* baud rate. |
|
*****************************************************************************/ |
|
static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor) |
|
{ |
|
int i; |
|
__u16 custom; |
|
|
|
for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { |
|
if (divisor_table[i].BaudRate == baudrate) { |
|
*divisor = divisor_table[i].Divisor; |
|
return 0; |
|
} |
|
} |
|
|
|
/* We have tried all of the standard baud rates |
|
* lets try to calculate the divisor for this baud rate |
|
* Make sure the baud rate is reasonable */ |
|
if (baudrate > 50 && baudrate < 230400) { |
|
/* get divisor */ |
|
custom = (__u16)((230400L + baudrate/2) / baudrate); |
|
|
|
*divisor = custom; |
|
|
|
dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom); |
|
return 0; |
|
} |
|
|
|
return -1; |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* send_cmd_write_uart_register |
|
* this function builds up a uart register message and sends to the device. |
|
*****************************************************************************/ |
|
static int send_cmd_write_uart_register(struct edgeport_port *edge_port, |
|
__u8 regNum, __u8 regValue) |
|
{ |
|
struct edgeport_serial *edge_serial = |
|
usb_get_serial_data(edge_port->port->serial); |
|
struct device *dev = &edge_port->port->dev; |
|
unsigned char *cmdBuffer; |
|
unsigned char *currCmd; |
|
unsigned long cmdLen = 0; |
|
int status; |
|
|
|
dev_dbg(dev, "%s - write to %s register 0x%02x\n", |
|
(regNum == MCR) ? "MCR" : "LCR", __func__, regValue); |
|
|
|
if (edge_serial->is_epic && |
|
!edge_serial->epic_descriptor.Supports.IOSPWriteMCR && |
|
regNum == MCR) { |
|
dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n"); |
|
return 0; |
|
} |
|
|
|
if (edge_serial->is_epic && |
|
!edge_serial->epic_descriptor.Supports.IOSPWriteLCR && |
|
regNum == LCR) { |
|
dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n"); |
|
return 0; |
|
} |
|
|
|
/* Alloc memory for the string of commands. */ |
|
cmdBuffer = kmalloc(0x10, GFP_ATOMIC); |
|
if (cmdBuffer == NULL) |
|
return -ENOMEM; |
|
|
|
currCmd = cmdBuffer; |
|
|
|
/* Build a cmd in the buffer to write the given register */ |
|
MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number, |
|
regNum, regValue); |
|
|
|
status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); |
|
if (status) { |
|
/* something bad happened, let's free up the memory */ |
|
kfree(cmdBuffer); |
|
} |
|
|
|
return status; |
|
} |
|
|
|
|
|
/***************************************************************************** |
|
* change_port_settings |
|
* This routine is called to set the UART on the device to match the |
|
* specified new settings. |
|
*****************************************************************************/ |
|
|
|
static void change_port_settings(struct tty_struct *tty, |
|
struct edgeport_port *edge_port, struct ktermios *old_termios) |
|
{ |
|
struct device *dev = &edge_port->port->dev; |
|
struct edgeport_serial *edge_serial = |
|
usb_get_serial_data(edge_port->port->serial); |
|
int baud; |
|
unsigned cflag; |
|
__u8 mask = 0xff; |
|
__u8 lData; |
|
__u8 lParity; |
|
__u8 lStop; |
|
__u8 rxFlow; |
|
__u8 txFlow; |
|
int status; |
|
|
|
if (!edge_port->open && |
|
!edge_port->openPending) { |
|
dev_dbg(dev, "%s - port not opened\n", __func__); |
|
return; |
|
} |
|
|
|
cflag = tty->termios.c_cflag; |
|
|
|
switch (cflag & CSIZE) { |
|
case CS5: |
|
lData = LCR_BITS_5; mask = 0x1f; |
|
dev_dbg(dev, "%s - data bits = 5\n", __func__); |
|
break; |
|
case CS6: |
|
lData = LCR_BITS_6; mask = 0x3f; |
|
dev_dbg(dev, "%s - data bits = 6\n", __func__); |
|
break; |
|
case CS7: |
|
lData = LCR_BITS_7; mask = 0x7f; |
|
dev_dbg(dev, "%s - data bits = 7\n", __func__); |
|
break; |
|
default: |
|
case CS8: |
|
lData = LCR_BITS_8; |
|
dev_dbg(dev, "%s - data bits = 8\n", __func__); |
|
break; |
|
} |
|
|
|
lParity = LCR_PAR_NONE; |
|
if (cflag & PARENB) { |
|
if (cflag & CMSPAR) { |
|
if (cflag & PARODD) { |
|
lParity = LCR_PAR_MARK; |
|
dev_dbg(dev, "%s - parity = mark\n", __func__); |
|
} else { |
|
lParity = LCR_PAR_SPACE; |
|
dev_dbg(dev, "%s - parity = space\n", __func__); |
|
} |
|
} else if (cflag & PARODD) { |
|
lParity = LCR_PAR_ODD; |
|
dev_dbg(dev, "%s - parity = odd\n", __func__); |
|
} else { |
|
lParity = LCR_PAR_EVEN; |
|
dev_dbg(dev, "%s - parity = even\n", __func__); |
|
} |
|
} else { |
|
dev_dbg(dev, "%s - parity = none\n", __func__); |
|
} |
|
|
|
if (cflag & CSTOPB) { |
|
lStop = LCR_STOP_2; |
|
dev_dbg(dev, "%s - stop bits = 2\n", __func__); |
|
} else { |
|
lStop = LCR_STOP_1; |
|
dev_dbg(dev, "%s - stop bits = 1\n", __func__); |
|
} |
|
|
|
/* figure out the flow control settings */ |
|
rxFlow = txFlow = 0x00; |
|
if (cflag & CRTSCTS) { |
|
rxFlow |= IOSP_RX_FLOW_RTS; |
|
txFlow |= IOSP_TX_FLOW_CTS; |
|
dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); |
|
} else { |
|
dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); |
|
} |
|
|
|
/* if we are implementing XON/XOFF, set the start and stop character |
|
in the device */ |
|
if (I_IXOFF(tty) || I_IXON(tty)) { |
|
unsigned char stop_char = STOP_CHAR(tty); |
|
unsigned char start_char = START_CHAR(tty); |
|
|
|
if (!edge_serial->is_epic || |
|
edge_serial->epic_descriptor.Supports.IOSPSetXChar) { |
|
send_iosp_ext_cmd(edge_port, |
|
IOSP_CMD_SET_XON_CHAR, start_char); |
|
send_iosp_ext_cmd(edge_port, |
|
IOSP_CMD_SET_XOFF_CHAR, stop_char); |
|
} |
|
|
|
/* if we are implementing INBOUND XON/XOFF */ |
|
if (I_IXOFF(tty)) { |
|
rxFlow |= IOSP_RX_FLOW_XON_XOFF; |
|
dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", |
|
__func__, start_char, stop_char); |
|
} else { |
|
dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); |
|
} |
|
|
|
/* if we are implementing OUTBOUND XON/XOFF */ |
|
if (I_IXON(tty)) { |
|
txFlow |= IOSP_TX_FLOW_XON_XOFF; |
|
dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", |
|
__func__, start_char, stop_char); |
|
} else { |
|
dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); |
|
} |
|
} |
|
|
|
/* Set flow control to the configured value */ |
|
if (!edge_serial->is_epic || |
|
edge_serial->epic_descriptor.Supports.IOSPSetRxFlow) |
|
send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow); |
|
if (!edge_serial->is_epic || |
|
edge_serial->epic_descriptor.Supports.IOSPSetTxFlow) |
|
send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow); |
|
|
|
|
|
edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); |
|
edge_port->shadowLCR |= (lData | lParity | lStop); |
|
|
|
edge_port->validDataMask = mask; |
|
|
|
/* Send the updated LCR value to the EdgePort */ |
|
status = send_cmd_write_uart_register(edge_port, LCR, |
|
edge_port->shadowLCR); |
|
if (status != 0) |
|
return; |
|
|
|
/* set up the MCR register and send it to the EdgePort */ |
|
edge_port->shadowMCR = MCR_MASTER_IE; |
|
if (cflag & CBAUD) |
|
edge_port->shadowMCR |= (MCR_DTR | MCR_RTS); |
|
|
|
status = send_cmd_write_uart_register(edge_port, MCR, |
|
edge_port->shadowMCR); |
|
if (status != 0) |
|
return; |
|
|
|
/* Determine divisor based on baud rate */ |
|
baud = tty_get_baud_rate(tty); |
|
if (!baud) { |
|
/* pick a default, any default... */ |
|
baud = 9600; |
|
} |
|
|
|
dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud); |
|
status = send_cmd_write_baud_rate(edge_port, baud); |
|
if (status == -1) { |
|
/* Speed change was not possible - put back the old speed */ |
|
baud = tty_termios_baud_rate(old_termios); |
|
tty_encode_baud_rate(tty, baud, baud); |
|
} |
|
} |
|
|
|
|
|
/**************************************************************************** |
|
* unicode_to_ascii |
|
* Turns a string from Unicode into ASCII. |
|
* Doesn't do a good job with any characters that are outside the normal |
|
* ASCII range, but it's only for debugging... |
|
* NOTE: expects the unicode in LE format |
|
****************************************************************************/ |
|
static void unicode_to_ascii(char *string, int buflen, |
|
__le16 *unicode, int unicode_size) |
|
{ |
|
int i; |
|
|
|
if (buflen <= 0) /* never happens, but... */ |
|
return; |
|
--buflen; /* space for nul */ |
|
|
|
for (i = 0; i < unicode_size; i++) { |
|
if (i >= buflen) |
|
break; |
|
string[i] = (char)(le16_to_cpu(unicode[i])); |
|
} |
|
string[i] = 0x00; |
|
} |
|
|
|
|
|
/**************************************************************************** |
|
* get_manufacturing_desc |
|
* reads in the manufacturing descriptor and stores it into the serial |
|
* structure. |
|
****************************************************************************/ |
|
static void get_manufacturing_desc(struct edgeport_serial *edge_serial) |
|
{ |
|
struct device *dev = &edge_serial->serial->dev->dev; |
|
int response; |
|
|
|
dev_dbg(dev, "getting manufacturer descriptor\n"); |
|
|
|
response = rom_read(edge_serial->serial, |
|
(EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16, |
|
(__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), |
|
EDGE_MANUF_DESC_LEN, |
|
(__u8 *)(&edge_serial->manuf_descriptor)); |
|
|
|
if (response < 0) { |
|
dev_err(dev, "error in getting manufacturer descriptor: %d\n", |
|
response); |
|
} else { |
|
char string[30]; |
|
dev_dbg(dev, "**Manufacturer Descriptor\n"); |
|
dev_dbg(dev, " RomSize: %dK\n", |
|
edge_serial->manuf_descriptor.RomSize); |
|
dev_dbg(dev, " RamSize: %dK\n", |
|
edge_serial->manuf_descriptor.RamSize); |
|
dev_dbg(dev, " CpuRev: %d\n", |
|
edge_serial->manuf_descriptor.CpuRev); |
|
dev_dbg(dev, " BoardRev: %d\n", |
|
edge_serial->manuf_descriptor.BoardRev); |
|
dev_dbg(dev, " NumPorts: %d\n", |
|
edge_serial->manuf_descriptor.NumPorts); |
|
dev_dbg(dev, " DescDate: %d/%d/%d\n", |
|
edge_serial->manuf_descriptor.DescDate[0], |
|
edge_serial->manuf_descriptor.DescDate[1], |
|
edge_serial->manuf_descriptor.DescDate[2]+1900); |
|
unicode_to_ascii(string, sizeof(string), |
|
edge_serial->manuf_descriptor.SerialNumber, |
|
edge_serial->manuf_descriptor.SerNumLength/2); |
|
dev_dbg(dev, " SerialNumber: %s\n", string); |
|
unicode_to_ascii(string, sizeof(string), |
|
edge_serial->manuf_descriptor.AssemblyNumber, |
|
edge_serial->manuf_descriptor.AssemblyNumLength/2); |
|
dev_dbg(dev, " AssemblyNumber: %s\n", string); |
|
unicode_to_ascii(string, sizeof(string), |
|
edge_serial->manuf_descriptor.OemAssyNumber, |
|
edge_serial->manuf_descriptor.OemAssyNumLength/2); |
|
dev_dbg(dev, " OemAssyNumber: %s\n", string); |
|
dev_dbg(dev, " UartType: %d\n", |
|
edge_serial->manuf_descriptor.UartType); |
|
dev_dbg(dev, " IonPid: %d\n", |
|
edge_serial->manuf_descriptor.IonPid); |
|
dev_dbg(dev, " IonConfig: %d\n", |
|
edge_serial->manuf_descriptor.IonConfig); |
|
} |
|
} |
|
|
|
|
|
/**************************************************************************** |
|
* get_boot_desc |
|
* reads in the bootloader descriptor and stores it into the serial |
|
* structure. |
|
****************************************************************************/ |
|
static void get_boot_desc(struct edgeport_serial *edge_serial) |
|
{ |
|
struct device *dev = &edge_serial->serial->dev->dev; |
|
int response; |
|
|
|
dev_dbg(dev, "getting boot descriptor\n"); |
|
|
|
response = rom_read(edge_serial->serial, |
|
(EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16, |
|
(__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), |
|
EDGE_BOOT_DESC_LEN, |
|
(__u8 *)(&edge_serial->boot_descriptor)); |
|
|
|
if (response < 0) { |
|
dev_err(dev, "error in getting boot descriptor: %d\n", |
|
response); |
|
} else { |
|
dev_dbg(dev, "**Boot Descriptor:\n"); |
|
dev_dbg(dev, " BootCodeLength: %d\n", |
|
le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength)); |
|
dev_dbg(dev, " MajorVersion: %d\n", |
|
edge_serial->boot_descriptor.MajorVersion); |
|
dev_dbg(dev, " MinorVersion: %d\n", |
|
edge_serial->boot_descriptor.MinorVersion); |
|
dev_dbg(dev, " BuildNumber: %d\n", |
|
le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); |
|
dev_dbg(dev, " Capabilities: 0x%x\n", |
|
le16_to_cpu(edge_serial->boot_descriptor.Capabilities)); |
|
dev_dbg(dev, " UConfig0: %d\n", |
|
edge_serial->boot_descriptor.UConfig0); |
|
dev_dbg(dev, " UConfig1: %d\n", |
|
edge_serial->boot_descriptor.UConfig1); |
|
} |
|
} |
|
|
|
|
|
/**************************************************************************** |
|
* load_application_firmware |
|
* This is called to load the application firmware to the device |
|
****************************************************************************/ |
|
static void load_application_firmware(struct edgeport_serial *edge_serial) |
|
{ |
|
struct device *dev = &edge_serial->serial->dev->dev; |
|
const struct ihex_binrec *rec; |
|
const struct firmware *fw; |
|
const char *fw_name; |
|
const char *fw_info; |
|
int response; |
|
__u32 Operaddr; |
|
__u16 build; |
|
|
|
switch (edge_serial->product_info.iDownloadFile) { |
|
case EDGE_DOWNLOAD_FILE_I930: |
|
fw_info = "downloading firmware version (930)"; |
|
fw_name = "edgeport/down.fw"; |
|
break; |
|
|
|
case EDGE_DOWNLOAD_FILE_80251: |
|
fw_info = "downloading firmware version (80251)"; |
|
fw_name = "edgeport/down2.fw"; |
|
break; |
|
|
|
case EDGE_DOWNLOAD_FILE_NONE: |
|
dev_dbg(dev, "No download file specified, skipping download\n"); |
|
return; |
|
|
|
default: |
|
return; |
|
} |
|
|
|
response = request_ihex_firmware(&fw, fw_name, |
|
&edge_serial->serial->dev->dev); |
|
if (response) { |
|
dev_err(dev, "Failed to load image \"%s\" err %d\n", |
|
fw_name, response); |
|
return; |
|
} |
|
|
|
rec = (const struct ihex_binrec *)fw->data; |
|
build = (rec->data[2] << 8) | rec->data[3]; |
|
|
|
dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build); |
|
|
|
edge_serial->product_info.FirmwareMajorVersion = rec->data[0]; |
|
edge_serial->product_info.FirmwareMinorVersion = rec->data[1]; |
|
edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build); |
|
|
|
for (rec = ihex_next_binrec(rec); rec; |
|
rec = ihex_next_binrec(rec)) { |
|
Operaddr = be32_to_cpu(rec->addr); |
|
response = sram_write(edge_serial->serial, |
|
Operaddr >> 16, |
|
Operaddr & 0xFFFF, |
|
be16_to_cpu(rec->len), |
|
&rec->data[0]); |
|
if (response < 0) { |
|
dev_err(&edge_serial->serial->dev->dev, |
|
"sram_write failed (%x, %x, %d)\n", |
|
Operaddr >> 16, Operaddr & 0xFFFF, |
|
be16_to_cpu(rec->len)); |
|
break; |
|
} |
|
} |
|
|
|
dev_dbg(dev, "sending exec_dl_code\n"); |
|
response = usb_control_msg (edge_serial->serial->dev, |
|
usb_sndctrlpipe(edge_serial->serial->dev, 0), |
|
USB_REQUEST_ION_EXEC_DL_CODE, |
|
0x40, 0x4000, 0x0001, NULL, 0, 3000); |
|
|
|
release_firmware(fw); |
|
} |
|
|
|
|
|
/**************************************************************************** |
|
* edge_startup |
|
****************************************************************************/ |
|
static int edge_startup(struct usb_serial *serial) |
|
{ |
|
struct edgeport_serial *edge_serial; |
|
struct usb_device *dev; |
|
struct device *ddev = &serial->dev->dev; |
|
int i; |
|
int response; |
|
bool interrupt_in_found; |
|
bool bulk_in_found; |
|
bool bulk_out_found; |
|
static const __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0, |
|
EDGE_COMPATIBILITY_MASK1, |
|
EDGE_COMPATIBILITY_MASK2 }; |
|
|
|
dev = serial->dev; |
|
|
|
/* create our private serial structure */ |
|
edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); |
|
if (!edge_serial) |
|
return -ENOMEM; |
|
|
|
spin_lock_init(&edge_serial->es_lock); |
|
edge_serial->serial = serial; |
|
usb_set_serial_data(serial, edge_serial); |
|
|
|
/* get the name for the device from the device */ |
|
i = usb_string(dev, dev->descriptor.iManufacturer, |
|
&edge_serial->name[0], MAX_NAME_LEN+1); |
|
if (i < 0) |
|
i = 0; |
|
edge_serial->name[i++] = ' '; |
|
usb_string(dev, dev->descriptor.iProduct, |
|
&edge_serial->name[i], MAX_NAME_LEN+2 - i); |
|
|
|
dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name); |
|
|
|
/* Read the epic descriptor */ |
|
if (get_epic_descriptor(edge_serial) < 0) { |
|
/* memcpy descriptor to Supports structures */ |
|
memcpy(&edge_serial->epic_descriptor.Supports, descriptor, |
|
sizeof(struct edge_compatibility_bits)); |
|
|
|
/* get the manufacturing descriptor for this device */ |
|
get_manufacturing_desc(edge_serial); |
|
|
|
/* get the boot descriptor */ |
|
get_boot_desc(edge_serial); |
|
|
|
get_product_info(edge_serial); |
|
} |
|
|
|
/* set the number of ports from the manufacturing description */ |
|
/* serial->num_ports = serial->product_info.NumPorts; */ |
|
if ((!edge_serial->is_epic) && |
|
(edge_serial->product_info.NumPorts != serial->num_ports)) { |
|
dev_warn(ddev, |
|
"Device Reported %d serial ports vs. core thinking we have %d ports, email [email protected] this information.\n", |
|
edge_serial->product_info.NumPorts, |
|
serial->num_ports); |
|
} |
|
|
|
dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies); |
|
|
|
/* If not an EPiC device */ |
|
if (!edge_serial->is_epic) { |
|
/* now load the application firmware into this device */ |
|
load_application_firmware(edge_serial); |
|
|
|
dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies); |
|
|
|
/* Check current Edgeport EEPROM and update if necessary */ |
|
update_edgeport_E2PROM(edge_serial); |
|
|
|
dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies); |
|
|
|
/* set the configuration to use #1 */ |
|
/* dev_dbg(ddev, "set_configuration 1\n"); */ |
|
/* usb_set_configuration (dev, 1); */ |
|
} |
|
dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n", |
|
edge_serial->product_info.FirmwareMajorVersion, |
|
edge_serial->product_info.FirmwareMinorVersion, |
|
le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber)); |
|
|
|
/* we set up the pointers to the endpoints in the edge_open function, |
|
* as the structures aren't created yet. */ |
|
|
|
response = 0; |
|
|
|
if (edge_serial->is_epic) { |
|
struct usb_host_interface *alt; |
|
|
|
alt = serial->interface->cur_altsetting; |
|
|
|
/* EPIC thing, set up our interrupt polling now and our read |
|
* urb, so that the device knows it really is connected. */ |
|
interrupt_in_found = bulk_in_found = bulk_out_found = false; |
|
for (i = 0; i < alt->desc.bNumEndpoints; ++i) { |
|
struct usb_endpoint_descriptor *endpoint; |
|
int buffer_size; |
|
|
|
endpoint = &alt->endpoint[i].desc; |
|
buffer_size = usb_endpoint_maxp(endpoint); |
|
if (!interrupt_in_found && |
|
(usb_endpoint_is_int_in(endpoint))) { |
|
/* we found a interrupt in endpoint */ |
|
dev_dbg(ddev, "found interrupt in\n"); |
|
|
|
/* not set up yet, so do it now */ |
|
edge_serial->interrupt_read_urb = |
|
usb_alloc_urb(0, GFP_KERNEL); |
|
if (!edge_serial->interrupt_read_urb) { |
|
response = -ENOMEM; |
|
break; |
|
} |
|
|
|
edge_serial->interrupt_in_buffer = |
|
kmalloc(buffer_size, GFP_KERNEL); |
|
if (!edge_serial->interrupt_in_buffer) { |
|
response = -ENOMEM; |
|
break; |
|
} |
|
edge_serial->interrupt_in_endpoint = |
|
endpoint->bEndpointAddress; |
|
|
|
/* set up our interrupt urb */ |
|
usb_fill_int_urb( |
|
edge_serial->interrupt_read_urb, |
|
dev, |
|
usb_rcvintpipe(dev, |
|
endpoint->bEndpointAddress), |
|
edge_serial->interrupt_in_buffer, |
|
buffer_size, |
|
edge_interrupt_callback, |
|
edge_serial, |
|
endpoint->bInterval); |
|
|
|
interrupt_in_found = true; |
|
} |
|
|
|
if (!bulk_in_found && |
|
(usb_endpoint_is_bulk_in(endpoint))) { |
|
/* we found a bulk in endpoint */ |
|
dev_dbg(ddev, "found bulk in\n"); |
|
|
|
/* not set up yet, so do it now */ |
|
edge_serial->read_urb = |
|
usb_alloc_urb(0, GFP_KERNEL); |
|
if (!edge_serial->read_urb) { |
|
response = -ENOMEM; |
|
break; |
|
} |
|
|
|
edge_serial->bulk_in_buffer = |
|
kmalloc(buffer_size, GFP_KERNEL); |
|
if (!edge_serial->bulk_in_buffer) { |
|
response = -ENOMEM; |
|
break; |
|
} |
|
edge_serial->bulk_in_endpoint = |
|
endpoint->bEndpointAddress; |
|
|
|
/* set up our bulk in urb */ |
|
usb_fill_bulk_urb(edge_serial->read_urb, dev, |
|
usb_rcvbulkpipe(dev, |
|
endpoint->bEndpointAddress), |
|
edge_serial->bulk_in_buffer, |
|
usb_endpoint_maxp(endpoint), |
|
edge_bulk_in_callback, |
|
edge_serial); |
|
bulk_in_found = true; |
|
} |
|
|
|
if (!bulk_out_found && |
|
(usb_endpoint_is_bulk_out(endpoint))) { |
|
/* we found a bulk out endpoint */ |
|
dev_dbg(ddev, "found bulk out\n"); |
|
edge_serial->bulk_out_endpoint = |
|
endpoint->bEndpointAddress; |
|
bulk_out_found = true; |
|
} |
|
} |
|
|
|
if (response || !interrupt_in_found || !bulk_in_found || |
|
!bulk_out_found) { |
|
if (!response) { |
|
dev_err(ddev, "expected endpoints not found\n"); |
|
response = -ENODEV; |
|
} |
|
|
|
goto error; |
|
} |
|
|
|
/* start interrupt read for this edgeport this interrupt will |
|
* continue as long as the edgeport is connected */ |
|
response = usb_submit_urb(edge_serial->interrupt_read_urb, |
|
GFP_KERNEL); |
|
if (response) { |
|
dev_err(ddev, "%s - Error %d submitting control urb\n", |
|
__func__, response); |
|
|
|
goto error; |
|
} |
|
} |
|
return response; |
|
|
|
error: |
|
usb_free_urb(edge_serial->interrupt_read_urb); |
|
kfree(edge_serial->interrupt_in_buffer); |
|
|
|
usb_free_urb(edge_serial->read_urb); |
|
kfree(edge_serial->bulk_in_buffer); |
|
|
|
kfree(edge_serial); |
|
|
|
return response; |
|
} |
|
|
|
|
|
/**************************************************************************** |
|
* edge_disconnect |
|
* This function is called whenever the device is removed from the usb bus. |
|
****************************************************************************/ |
|
static void edge_disconnect(struct usb_serial *serial) |
|
{ |
|
struct edgeport_serial *edge_serial = usb_get_serial_data(serial); |
|
|
|
if (edge_serial->is_epic) { |
|
usb_kill_urb(edge_serial->interrupt_read_urb); |
|
usb_kill_urb(edge_serial->read_urb); |
|
} |
|
} |
|
|
|
|
|
/**************************************************************************** |
|
* edge_release |
|
* This function is called when the device structure is deallocated. |
|
****************************************************************************/ |
|
static void edge_release(struct usb_serial *serial) |
|
{ |
|
struct edgeport_serial *edge_serial = usb_get_serial_data(serial); |
|
|
|
if (edge_serial->is_epic) { |
|
usb_kill_urb(edge_serial->interrupt_read_urb); |
|
usb_free_urb(edge_serial->interrupt_read_urb); |
|
kfree(edge_serial->interrupt_in_buffer); |
|
|
|
usb_kill_urb(edge_serial->read_urb); |
|
usb_free_urb(edge_serial->read_urb); |
|
kfree(edge_serial->bulk_in_buffer); |
|
} |
|
|
|
kfree(edge_serial); |
|
} |
|
|
|
static int edge_port_probe(struct usb_serial_port *port) |
|
{ |
|
struct edgeport_port *edge_port; |
|
|
|
edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); |
|
if (!edge_port) |
|
return -ENOMEM; |
|
|
|
spin_lock_init(&edge_port->ep_lock); |
|
edge_port->port = port; |
|
|
|
usb_set_serial_port_data(port, edge_port); |
|
|
|
return 0; |
|
} |
|
|
|
static void edge_port_remove(struct usb_serial_port *port) |
|
{ |
|
struct edgeport_port *edge_port; |
|
|
|
edge_port = usb_get_serial_port_data(port); |
|
kfree(edge_port); |
|
} |
|
|
|
static struct usb_serial_driver edgeport_2port_device = { |
|
.driver = { |
|
.owner = THIS_MODULE, |
|
.name = "edgeport_2", |
|
}, |
|
.description = "Edgeport 2 port adapter", |
|
.id_table = edgeport_2port_id_table, |
|
.num_ports = 2, |
|
.num_bulk_in = 1, |
|
.num_bulk_out = 1, |
|
.num_interrupt_in = 1, |
|
.open = edge_open, |
|
.close = edge_close, |
|
.throttle = edge_throttle, |
|
.unthrottle = edge_unthrottle, |
|
.attach = edge_startup, |
|
.disconnect = edge_disconnect, |
|
.release = edge_release, |
|
.port_probe = edge_port_probe, |
|
.port_remove = edge_port_remove, |
|
.ioctl = edge_ioctl, |
|
.set_termios = edge_set_termios, |
|
.tiocmget = edge_tiocmget, |
|
.tiocmset = edge_tiocmset, |
|
.get_serial = get_serial_info, |
|
.tiocmiwait = usb_serial_generic_tiocmiwait, |
|
.get_icount = usb_serial_generic_get_icount, |
|
.write = edge_write, |
|
.write_room = edge_write_room, |
|
.chars_in_buffer = edge_chars_in_buffer, |
|
.break_ctl = edge_break, |
|
.read_int_callback = edge_interrupt_callback, |
|
.read_bulk_callback = edge_bulk_in_callback, |
|
.write_bulk_callback = edge_bulk_out_data_callback, |
|
}; |
|
|
|
static struct usb_serial_driver edgeport_4port_device = { |
|
.driver = { |
|
.owner = THIS_MODULE, |
|
.name = "edgeport_4", |
|
}, |
|
.description = "Edgeport 4 port adapter", |
|
.id_table = edgeport_4port_id_table, |
|
.num_ports = 4, |
|
.num_bulk_in = 1, |
|
.num_bulk_out = 1, |
|
.num_interrupt_in = 1, |
|
.open = edge_open, |
|
.close = edge_close, |
|
.throttle = edge_throttle, |
|
.unthrottle = edge_unthrottle, |
|
.attach = edge_startup, |
|
.disconnect = edge_disconnect, |
|
.release = edge_release, |
|
.port_probe = edge_port_probe, |
|
.port_remove = edge_port_remove, |
|
.ioctl = edge_ioctl, |
|
.set_termios = edge_set_termios, |
|
.tiocmget = edge_tiocmget, |
|
.tiocmset = edge_tiocmset, |
|
.get_serial = get_serial_info, |
|
.tiocmiwait = usb_serial_generic_tiocmiwait, |
|
.get_icount = usb_serial_generic_get_icount, |
|
.write = edge_write, |
|
.write_room = edge_write_room, |
|
.chars_in_buffer = edge_chars_in_buffer, |
|
.break_ctl = edge_break, |
|
.read_int_callback = edge_interrupt_callback, |
|
.read_bulk_callback = edge_bulk_in_callback, |
|
.write_bulk_callback = edge_bulk_out_data_callback, |
|
}; |
|
|
|
static struct usb_serial_driver edgeport_8port_device = { |
|
.driver = { |
|
.owner = THIS_MODULE, |
|
.name = "edgeport_8", |
|
}, |
|
.description = "Edgeport 8 port adapter", |
|
.id_table = edgeport_8port_id_table, |
|
.num_ports = 8, |
|
.num_bulk_in = 1, |
|
.num_bulk_out = 1, |
|
.num_interrupt_in = 1, |
|
.open = edge_open, |
|
.close = edge_close, |
|
.throttle = edge_throttle, |
|
.unthrottle = edge_unthrottle, |
|
.attach = edge_startup, |
|
.disconnect = edge_disconnect, |
|
.release = edge_release, |
|
.port_probe = edge_port_probe, |
|
.port_remove = edge_port_remove, |
|
.ioctl = edge_ioctl, |
|
.set_termios = edge_set_termios, |
|
.tiocmget = edge_tiocmget, |
|
.tiocmset = edge_tiocmset, |
|
.get_serial = get_serial_info, |
|
.tiocmiwait = usb_serial_generic_tiocmiwait, |
|
.get_icount = usb_serial_generic_get_icount, |
|
.write = edge_write, |
|
.write_room = edge_write_room, |
|
.chars_in_buffer = edge_chars_in_buffer, |
|
.break_ctl = edge_break, |
|
.read_int_callback = edge_interrupt_callback, |
|
.read_bulk_callback = edge_bulk_in_callback, |
|
.write_bulk_callback = edge_bulk_out_data_callback, |
|
}; |
|
|
|
static struct usb_serial_driver epic_device = { |
|
.driver = { |
|
.owner = THIS_MODULE, |
|
.name = "epic", |
|
}, |
|
.description = "EPiC device", |
|
.id_table = Epic_port_id_table, |
|
.num_ports = 1, |
|
.num_bulk_in = 1, |
|
.num_bulk_out = 1, |
|
.num_interrupt_in = 1, |
|
.open = edge_open, |
|
.close = edge_close, |
|
.throttle = edge_throttle, |
|
.unthrottle = edge_unthrottle, |
|
.attach = edge_startup, |
|
.disconnect = edge_disconnect, |
|
.release = edge_release, |
|
.port_probe = edge_port_probe, |
|
.port_remove = edge_port_remove, |
|
.ioctl = edge_ioctl, |
|
.set_termios = edge_set_termios, |
|
.tiocmget = edge_tiocmget, |
|
.tiocmset = edge_tiocmset, |
|
.get_serial = get_serial_info, |
|
.tiocmiwait = usb_serial_generic_tiocmiwait, |
|
.get_icount = usb_serial_generic_get_icount, |
|
.write = edge_write, |
|
.write_room = edge_write_room, |
|
.chars_in_buffer = edge_chars_in_buffer, |
|
.break_ctl = edge_break, |
|
.read_int_callback = edge_interrupt_callback, |
|
.read_bulk_callback = edge_bulk_in_callback, |
|
.write_bulk_callback = edge_bulk_out_data_callback, |
|
}; |
|
|
|
static struct usb_serial_driver * const serial_drivers[] = { |
|
&edgeport_2port_device, &edgeport_4port_device, |
|
&edgeport_8port_device, &epic_device, NULL |
|
}; |
|
|
|
module_usb_serial_driver(serial_drivers, id_table_combined); |
|
|
|
MODULE_AUTHOR(DRIVER_AUTHOR); |
|
MODULE_DESCRIPTION(DRIVER_DESC); |
|
MODULE_LICENSE("GPL"); |
|
MODULE_FIRMWARE("edgeport/boot.fw"); |
|
MODULE_FIRMWARE("edgeport/boot2.fw"); |
|
MODULE_FIRMWARE("edgeport/down.fw"); |
|
MODULE_FIRMWARE("edgeport/down2.fw");
|
|
|