![Archana kumari](/assets/img/avatar_default.png)
Fixes "braces {} are not necessary for single statement blocks" warning in dgnc_driver.c Signed-off-by: Archana kumari <archanakumari959@gmail.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
944 lines
22 KiB
C
944 lines
22 KiB
C
/*
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* Copyright 2003 Digi International (www.digi.com)
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* Scott H Kilau <Scott_Kilau at digi dot com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*
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* NOTE TO LINUX KERNEL HACKERS: DO NOT REFORMAT THIS CODE!
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*
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* This is shared code between Digi's CVS archive and the
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* Linux Kernel sources.
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* Changing the source just for reformatting needlessly breaks
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* our CVS diff history.
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*
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* Send any bug fixes/changes to: Eng.Linux at digi dot com.
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* Thank you.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/slab.h>
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#include <linux/sched.h>
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#include "dgnc_driver.h"
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#include "dgnc_pci.h"
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#include "dpacompat.h"
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#include "dgnc_mgmt.h"
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#include "dgnc_tty.h"
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#include "dgnc_trace.h"
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#include "dgnc_cls.h"
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#include "dgnc_neo.h"
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#include "dgnc_sysfs.h"
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Digi International, http://www.digi.com");
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MODULE_DESCRIPTION("Driver for the Digi International Neo and Classic PCI based product line");
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MODULE_SUPPORTED_DEVICE("dgnc");
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/*
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* insmod command line overrideable parameters
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*
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* NOTE: we use a set of macros to create the variables, which allows
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* us to specify the variable type, name, initial value, and description.
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*/
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PARM_INT(debug, 0x00, 0644, "Driver debugging level");
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PARM_INT(rawreadok, 1, 0644, "Bypass flip buffers on input");
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PARM_INT(trcbuf_size, 0x100000, 0644, "Debugging trace buffer size.");
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/**************************************************************************
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*
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* protos for this file
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*
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*/
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static int dgnc_start(void);
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static int dgnc_finalize_board_init(struct dgnc_board *brd);
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static void dgnc_init_globals(void);
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static int dgnc_found_board(struct pci_dev *pdev, int id);
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static void dgnc_cleanup_board(struct dgnc_board *brd);
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static void dgnc_poll_handler(ulong dummy);
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static int dgnc_init_pci(void);
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static int dgnc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
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static void dgnc_remove_one(struct pci_dev *dev);
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static int dgnc_probe1(struct pci_dev *pdev, int card_type);
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static void dgnc_do_remap(struct dgnc_board *brd);
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/* Driver load/unload functions */
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int dgnc_init_module(void);
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void dgnc_cleanup_module(void);
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module_init(dgnc_init_module);
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module_exit(dgnc_cleanup_module);
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/*
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* File operations permitted on Control/Management major.
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*/
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static struct file_operations dgnc_BoardFops =
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{
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.owner = THIS_MODULE,
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.unlocked_ioctl = dgnc_mgmt_ioctl,
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.open = dgnc_mgmt_open,
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.release = dgnc_mgmt_close
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};
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/*
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* Globals
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*/
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uint dgnc_NumBoards;
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struct dgnc_board *dgnc_Board[MAXBOARDS];
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DEFINE_SPINLOCK(dgnc_global_lock);
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int dgnc_driver_state = DRIVER_INITIALIZED;
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ulong dgnc_poll_counter;
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uint dgnc_Major;
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int dgnc_poll_tick = 20; /* Poll interval - 20 ms */
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/*
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* Static vars.
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*/
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static uint dgnc_Major_Control_Registered = FALSE;
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static uint dgnc_driver_start = FALSE;
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static struct class *dgnc_class;
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/*
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* Poller stuff
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*/
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static DEFINE_SPINLOCK(dgnc_poll_lock); /* Poll scheduling lock */
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static ulong dgnc_poll_time; /* Time of next poll */
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static uint dgnc_poll_stop; /* Used to tell poller to stop */
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static struct timer_list dgnc_poll_timer;
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static struct pci_device_id dgnc_pci_tbl[] = {
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{ DIGI_VID, PCI_DEVICE_CLASSIC_4_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
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{ DIGI_VID, PCI_DEVICE_CLASSIC_4_422_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
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{ DIGI_VID, PCI_DEVICE_CLASSIC_8_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
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{ DIGI_VID, PCI_DEVICE_CLASSIC_8_422_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
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{ DIGI_VID, PCI_DEVICE_NEO_4_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
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{ DIGI_VID, PCI_DEVICE_NEO_8_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
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{ DIGI_VID, PCI_DEVICE_NEO_2DB9_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
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{ DIGI_VID, PCI_DEVICE_NEO_2DB9PRI_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 },
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{ DIGI_VID, PCI_DEVICE_NEO_2RJ45_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
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{ DIGI_VID, PCI_DEVICE_NEO_2RJ45PRI_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 },
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{ DIGI_VID, PCI_DEVICE_NEO_1_422_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
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{ DIGI_VID, PCI_DEVICE_NEO_1_422_485_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
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{ DIGI_VID, PCI_DEVICE_NEO_2_422_485_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
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{ DIGI_VID, PCI_DEVICE_NEO_EXPRESS_8_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 13 },
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{ DIGI_VID, PCI_DEVICE_NEO_EXPRESS_4_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 14 },
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{ DIGI_VID, PCI_DEVICE_NEO_EXPRESS_4RJ45_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 15 },
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{ DIGI_VID, PCI_DEVICE_NEO_EXPRESS_8RJ45_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 16 },
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{0,} /* 0 terminated list. */
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};
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MODULE_DEVICE_TABLE(pci, dgnc_pci_tbl);
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struct board_id {
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uchar *name;
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uint maxports;
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unsigned int is_pci_express;
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};
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static struct board_id dgnc_Ids[] =
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{
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{ PCI_DEVICE_CLASSIC_4_PCI_NAME, 4, 0 },
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{ PCI_DEVICE_CLASSIC_4_422_PCI_NAME, 4, 0 },
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{ PCI_DEVICE_CLASSIC_8_PCI_NAME, 8, 0 },
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{ PCI_DEVICE_CLASSIC_8_422_PCI_NAME, 8, 0 },
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{ PCI_DEVICE_NEO_4_PCI_NAME, 4, 0 },
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{ PCI_DEVICE_NEO_8_PCI_NAME, 8, 0 },
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{ PCI_DEVICE_NEO_2DB9_PCI_NAME, 2, 0 },
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{ PCI_DEVICE_NEO_2DB9PRI_PCI_NAME, 2, 0 },
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{ PCI_DEVICE_NEO_2RJ45_PCI_NAME, 2, 0 },
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{ PCI_DEVICE_NEO_2RJ45PRI_PCI_NAME, 2, 0 },
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{ PCI_DEVICE_NEO_1_422_PCI_NAME, 1, 0 },
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{ PCI_DEVICE_NEO_1_422_485_PCI_NAME, 1, 0 },
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{ PCI_DEVICE_NEO_2_422_485_PCI_NAME, 2, 0 },
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{ PCI_DEVICE_NEO_EXPRESS_8_PCI_NAME, 8, 1 },
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{ PCI_DEVICE_NEO_EXPRESS_4_PCI_NAME, 4, 1 },
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{ PCI_DEVICE_NEO_EXPRESS_4RJ45_PCI_NAME, 4, 1 },
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{ PCI_DEVICE_NEO_EXPRESS_8RJ45_PCI_NAME, 8, 1 },
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{ NULL, 0, 0 }
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};
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static struct pci_driver dgnc_driver = {
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.name = "dgnc",
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.probe = dgnc_init_one,
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.id_table = dgnc_pci_tbl,
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.remove = dgnc_remove_one,
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};
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char *dgnc_state_text[] = {
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"Board Failed",
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"Board Found",
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"Board READY",
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};
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char *dgnc_driver_state_text[] = {
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"Driver Initialized",
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"Driver Ready."
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};
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/************************************************************************
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*
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* Driver load/unload functions
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*
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************************************************************************/
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/*
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* init_module()
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*
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* Module load. This is where it all starts.
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*/
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int dgnc_init_module(void)
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{
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int rc = 0;
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APR(("%s, Digi International Part Number %s\n", DG_NAME, DG_PART));
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/*
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* Initialize global stuff
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*/
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rc = dgnc_start();
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if (rc < 0) {
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return rc;
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}
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/*
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* Find and configure all the cards
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*/
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rc = dgnc_init_pci();
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/*
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* If something went wrong in the scan, bail out of driver.
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*/
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if (rc < 0) {
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/* Only unregister the pci driver if it was actually registered. */
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if (dgnc_NumBoards)
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pci_unregister_driver(&dgnc_driver);
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else
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printk("WARNING: dgnc driver load failed. No Digi Neo or Classic boards found.\n");
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dgnc_cleanup_module();
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}
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else {
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dgnc_create_driver_sysfiles(&dgnc_driver);
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}
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DPR_INIT(("Finished init_module. Returning %d\n", rc));
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return rc;
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}
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/*
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* Start of driver.
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*/
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static int dgnc_start(void)
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{
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int rc = 0;
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unsigned long flags;
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if (dgnc_driver_start == FALSE) {
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dgnc_driver_start = TRUE;
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/* make sure that the globals are init'd before we do anything else */
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dgnc_init_globals();
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dgnc_NumBoards = 0;
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APR(("For the tools package or updated drivers please visit http://www.digi.com\n"));
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/*
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* Register our base character device into the kernel.
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* This allows the download daemon to connect to the downld device
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* before any of the boards are init'ed.
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*/
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if (!dgnc_Major_Control_Registered) {
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/*
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* Register management/dpa devices
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*/
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rc = register_chrdev(0, "dgnc", &dgnc_BoardFops);
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if (rc <= 0) {
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APR(("Can't register dgnc driver device (%d)\n", rc));
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rc = -ENXIO;
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return rc;
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}
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dgnc_Major = rc;
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dgnc_class = class_create(THIS_MODULE, "dgnc_mgmt");
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device_create(dgnc_class, NULL,
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MKDEV(dgnc_Major, 0),
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NULL, "dgnc_mgmt");
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dgnc_Major_Control_Registered = TRUE;
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}
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/*
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* Init any global tty stuff.
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*/
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rc = dgnc_tty_preinit();
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if (rc < 0) {
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APR(("tty preinit - not enough memory (%d)\n", rc));
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return rc;
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}
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/* Start the poller */
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DGNC_LOCK(dgnc_poll_lock, flags);
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init_timer(&dgnc_poll_timer);
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dgnc_poll_timer.function = dgnc_poll_handler;
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dgnc_poll_timer.data = 0;
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dgnc_poll_time = jiffies + dgnc_jiffies_from_ms(dgnc_poll_tick);
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dgnc_poll_timer.expires = dgnc_poll_time;
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DGNC_UNLOCK(dgnc_poll_lock, flags);
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add_timer(&dgnc_poll_timer);
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dgnc_driver_state = DRIVER_READY;
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}
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return rc;
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}
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/*
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* Register pci driver, and return how many boards we have.
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*/
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static int dgnc_init_pci(void)
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{
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return pci_register_driver(&dgnc_driver);
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}
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/* returns count (>= 0), or negative on error */
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static int dgnc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
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{
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int rc;
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/* wake up and enable device */
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rc = pci_enable_device(pdev);
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if (rc < 0) {
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rc = -EIO;
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} else {
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rc = dgnc_probe1(pdev, ent->driver_data);
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if (rc == 0) {
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dgnc_NumBoards++;
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DPR_INIT(("Incrementing numboards to %d\n", dgnc_NumBoards));
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}
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}
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return rc;
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}
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static int dgnc_probe1(struct pci_dev *pdev, int card_type)
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{
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return dgnc_found_board(pdev, card_type);
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}
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static void dgnc_remove_one(struct pci_dev *dev)
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{
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/* Do Nothing */
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}
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/*
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* dgnc_cleanup_module()
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*
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* Module unload. This is where it all ends.
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*/
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void dgnc_cleanup_module(void)
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{
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int i;
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ulong lock_flags;
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DGNC_LOCK(dgnc_poll_lock, lock_flags);
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dgnc_poll_stop = 1;
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DGNC_UNLOCK(dgnc_poll_lock, lock_flags);
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/* Turn off poller right away. */
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del_timer_sync(&dgnc_poll_timer);
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dgnc_remove_driver_sysfiles(&dgnc_driver);
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if (dgnc_Major_Control_Registered) {
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device_destroy(dgnc_class, MKDEV(dgnc_Major, 0));
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class_destroy(dgnc_class);
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unregister_chrdev(dgnc_Major, "dgnc");
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}
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for (i = 0; i < dgnc_NumBoards; ++i) {
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dgnc_remove_ports_sysfiles(dgnc_Board[i]);
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dgnc_tty_uninit(dgnc_Board[i]);
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dgnc_cleanup_board(dgnc_Board[i]);
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}
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dgnc_tty_post_uninit();
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#if defined(DGNC_TRACER)
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/* last thing, make sure we release the tracebuffer */
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dgnc_tracer_free();
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#endif
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if (dgnc_NumBoards)
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pci_unregister_driver(&dgnc_driver);
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}
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/*
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* dgnc_cleanup_board()
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*
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* Free all the memory associated with a board
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*/
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static void dgnc_cleanup_board(struct dgnc_board *brd)
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{
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int i = 0;
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if(!brd || brd->magic != DGNC_BOARD_MAGIC)
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return;
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switch (brd->device) {
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case PCI_DEVICE_CLASSIC_4_DID:
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case PCI_DEVICE_CLASSIC_8_DID:
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case PCI_DEVICE_CLASSIC_4_422_DID:
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case PCI_DEVICE_CLASSIC_8_422_DID:
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/* Tell card not to interrupt anymore. */
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outb(0, brd->iobase + 0x4c);
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break;
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default:
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break;
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}
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if (brd->irq)
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free_irq(brd->irq, brd);
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tasklet_kill(&brd->helper_tasklet);
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if (brd->re_map_membase) {
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iounmap(brd->re_map_membase);
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brd->re_map_membase = NULL;
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}
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if (brd->msgbuf_head) {
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unsigned long flags;
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DGNC_LOCK(dgnc_global_lock, flags);
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brd->msgbuf = NULL;
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printk("%s", brd->msgbuf_head);
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kfree(brd->msgbuf_head);
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brd->msgbuf_head = NULL;
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DGNC_UNLOCK(dgnc_global_lock, flags);
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}
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/* Free all allocated channels structs */
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for (i = 0; i < MAXPORTS ; i++) {
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if (brd->channels[i]) {
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if (brd->channels[i]->ch_rqueue)
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kfree(brd->channels[i]->ch_rqueue);
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if (brd->channels[i]->ch_equeue)
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kfree(brd->channels[i]->ch_equeue);
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if (brd->channels[i]->ch_wqueue)
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kfree(brd->channels[i]->ch_wqueue);
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kfree(brd->channels[i]);
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brd->channels[i] = NULL;
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}
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}
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if (brd->flipbuf)
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kfree(brd->flipbuf);
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dgnc_Board[brd->boardnum] = NULL;
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kfree(brd);
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}
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/*
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* dgnc_found_board()
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*
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* A board has been found, init it.
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*/
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static int dgnc_found_board(struct pci_dev *pdev, int id)
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{
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struct dgnc_board *brd;
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unsigned int pci_irq;
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int i = 0;
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int rc = 0;
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unsigned long flags;
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|
|
/* get the board structure and prep it */
|
|
brd = dgnc_Board[dgnc_NumBoards] =
|
|
kzalloc(sizeof(*brd), GFP_KERNEL);
|
|
if (!brd)
|
|
return -ENOMEM;
|
|
|
|
/* make a temporary message buffer for the boot messages */
|
|
brd->msgbuf = brd->msgbuf_head =
|
|
kzalloc(sizeof(u8) * 8192, GFP_KERNEL);
|
|
if (!brd->msgbuf) {
|
|
kfree(brd);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* store the info for the board we've found */
|
|
brd->magic = DGNC_BOARD_MAGIC;
|
|
brd->boardnum = dgnc_NumBoards;
|
|
brd->vendor = dgnc_pci_tbl[id].vendor;
|
|
brd->device = dgnc_pci_tbl[id].device;
|
|
brd->pdev = pdev;
|
|
brd->pci_bus = pdev->bus->number;
|
|
brd->pci_slot = PCI_SLOT(pdev->devfn);
|
|
brd->name = dgnc_Ids[id].name;
|
|
brd->maxports = dgnc_Ids[id].maxports;
|
|
if (dgnc_Ids[i].is_pci_express)
|
|
brd->bd_flags |= BD_IS_PCI_EXPRESS;
|
|
brd->dpastatus = BD_NOFEP;
|
|
init_waitqueue_head(&brd->state_wait);
|
|
|
|
DGNC_SPINLOCK_INIT(brd->bd_lock);
|
|
DGNC_SPINLOCK_INIT(brd->bd_intr_lock);
|
|
|
|
brd->state = BOARD_FOUND;
|
|
|
|
for (i = 0; i < MAXPORTS; i++) {
|
|
brd->channels[i] = NULL;
|
|
}
|
|
|
|
/* store which card & revision we have */
|
|
pci_read_config_word(pdev, PCI_SUBSYSTEM_VENDOR_ID, &brd->subvendor);
|
|
pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &brd->subdevice);
|
|
pci_read_config_byte(pdev, PCI_REVISION_ID, &brd->rev);
|
|
|
|
pci_irq = pdev->irq;
|
|
brd->irq = pci_irq;
|
|
|
|
|
|
switch(brd->device) {
|
|
|
|
case PCI_DEVICE_CLASSIC_4_DID:
|
|
case PCI_DEVICE_CLASSIC_8_DID:
|
|
case PCI_DEVICE_CLASSIC_4_422_DID:
|
|
case PCI_DEVICE_CLASSIC_8_422_DID:
|
|
|
|
brd->dpatype = T_CLASSIC | T_PCIBUS;
|
|
|
|
DPR_INIT(("dgnc_found_board - Classic.\n"));
|
|
|
|
/*
|
|
* For PCI ClassicBoards
|
|
* PCI Local Address (i.e. "resource" number) space
|
|
* 0 PLX Memory Mapped Config
|
|
* 1 PLX I/O Mapped Config
|
|
* 2 I/O Mapped UARTs and Status
|
|
* 3 Memory Mapped VPD
|
|
* 4 Memory Mapped UARTs and Status
|
|
*/
|
|
|
|
|
|
/* get the PCI Base Address Registers */
|
|
brd->membase = pci_resource_start(pdev, 4);
|
|
|
|
if (!brd->membase) {
|
|
APR(("card has no PCI IO resources, failing board.\n"));
|
|
return -ENODEV;
|
|
}
|
|
|
|
brd->membase_end = pci_resource_end(pdev, 4);
|
|
|
|
if (brd->membase & 1)
|
|
brd->membase &= ~3;
|
|
else
|
|
brd->membase &= ~15;
|
|
|
|
brd->iobase = pci_resource_start(pdev, 1);
|
|
brd->iobase_end = pci_resource_end(pdev, 1);
|
|
brd->iobase = ((unsigned int) (brd->iobase)) & 0xFFFE;
|
|
|
|
/* Assign the board_ops struct */
|
|
brd->bd_ops = &dgnc_cls_ops;
|
|
|
|
brd->bd_uart_offset = 0x8;
|
|
brd->bd_dividend = 921600;
|
|
|
|
dgnc_do_remap(brd);
|
|
|
|
/* Get and store the board VPD, if it exists */
|
|
brd->bd_ops->vpd(brd);
|
|
|
|
/*
|
|
* Enable Local Interrupt 1 (0x1),
|
|
* Local Interrupt 1 Polarity Active high (0x2),
|
|
* Enable PCI interrupt (0x40)
|
|
*/
|
|
outb(0x43, brd->iobase + 0x4c);
|
|
|
|
break;
|
|
|
|
|
|
case PCI_DEVICE_NEO_4_DID:
|
|
case PCI_DEVICE_NEO_8_DID:
|
|
case PCI_DEVICE_NEO_2DB9_DID:
|
|
case PCI_DEVICE_NEO_2DB9PRI_DID:
|
|
case PCI_DEVICE_NEO_2RJ45_DID:
|
|
case PCI_DEVICE_NEO_2RJ45PRI_DID:
|
|
case PCI_DEVICE_NEO_1_422_DID:
|
|
case PCI_DEVICE_NEO_1_422_485_DID:
|
|
case PCI_DEVICE_NEO_2_422_485_DID:
|
|
case PCI_DEVICE_NEO_EXPRESS_8_DID:
|
|
case PCI_DEVICE_NEO_EXPRESS_4_DID:
|
|
case PCI_DEVICE_NEO_EXPRESS_4RJ45_DID:
|
|
case PCI_DEVICE_NEO_EXPRESS_8RJ45_DID:
|
|
|
|
/*
|
|
* This chip is set up 100% when we get to it.
|
|
* No need to enable global interrupts or anything.
|
|
*/
|
|
if (brd->bd_flags & BD_IS_PCI_EXPRESS)
|
|
brd->dpatype = T_NEO_EXPRESS | T_PCIBUS;
|
|
else
|
|
brd->dpatype = T_NEO | T_PCIBUS;
|
|
|
|
DPR_INIT(("dgnc_found_board - NEO.\n"));
|
|
|
|
/* get the PCI Base Address Registers */
|
|
brd->membase = pci_resource_start(pdev, 0);
|
|
brd->membase_end = pci_resource_end(pdev, 0);
|
|
|
|
if (brd->membase & 1)
|
|
brd->membase &= ~3;
|
|
else
|
|
brd->membase &= ~15;
|
|
|
|
/* Assign the board_ops struct */
|
|
brd->bd_ops = &dgnc_neo_ops;
|
|
|
|
brd->bd_uart_offset = 0x200;
|
|
brd->bd_dividend = 921600;
|
|
|
|
dgnc_do_remap(brd);
|
|
|
|
if (brd->re_map_membase) {
|
|
|
|
/* After remap is complete, we need to read and store the dvid */
|
|
brd->dvid = readb(brd->re_map_membase + 0x8D);
|
|
|
|
/* Get and store the board VPD, if it exists */
|
|
brd->bd_ops->vpd(brd);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
APR(("Did not find any compatible Neo or Classic PCI boards in system.\n"));
|
|
return -ENXIO;
|
|
|
|
}
|
|
|
|
/*
|
|
* Do tty device initialization.
|
|
*/
|
|
|
|
rc = dgnc_tty_register(brd);
|
|
if (rc < 0) {
|
|
dgnc_tty_uninit(brd);
|
|
APR(("Can't register tty devices (%d)\n", rc));
|
|
brd->state = BOARD_FAILED;
|
|
brd->dpastatus = BD_NOFEP;
|
|
goto failed;
|
|
}
|
|
|
|
rc = dgnc_finalize_board_init(brd);
|
|
if (rc < 0) {
|
|
APR(("Can't finalize board init (%d)\n", rc));
|
|
brd->state = BOARD_FAILED;
|
|
brd->dpastatus = BD_NOFEP;
|
|
|
|
goto failed;
|
|
}
|
|
|
|
rc = dgnc_tty_init(brd);
|
|
if (rc < 0) {
|
|
dgnc_tty_uninit(brd);
|
|
APR(("Can't init tty devices (%d)\n", rc));
|
|
brd->state = BOARD_FAILED;
|
|
brd->dpastatus = BD_NOFEP;
|
|
|
|
goto failed;
|
|
}
|
|
|
|
brd->state = BOARD_READY;
|
|
brd->dpastatus = BD_RUNNING;
|
|
|
|
dgnc_create_ports_sysfiles(brd);
|
|
|
|
/* init our poll helper tasklet */
|
|
tasklet_init(&brd->helper_tasklet, brd->bd_ops->tasklet, (unsigned long) brd);
|
|
|
|
DPR_INIT(("dgnc_scan(%d) - printing out the msgbuf\n", i));
|
|
DGNC_LOCK(dgnc_global_lock, flags);
|
|
brd->msgbuf = NULL;
|
|
printk("%s", brd->msgbuf_head);
|
|
kfree(brd->msgbuf_head);
|
|
brd->msgbuf_head = NULL;
|
|
DGNC_UNLOCK(dgnc_global_lock, flags);
|
|
|
|
/*
|
|
* allocate flip buffer for board.
|
|
*
|
|
* Okay to malloc with GFP_KERNEL, we are not at interrupt
|
|
* context, and there are no locks held.
|
|
*/
|
|
brd->flipbuf = kzalloc(MYFLIPLEN, GFP_KERNEL);
|
|
|
|
wake_up_interruptible(&brd->state_wait);
|
|
|
|
return 0;
|
|
|
|
failed:
|
|
|
|
return -ENXIO;
|
|
|
|
}
|
|
|
|
|
|
static int dgnc_finalize_board_init(struct dgnc_board *brd) {
|
|
int rc = 0;
|
|
|
|
DPR_INIT(("dgnc_finalize_board_init() - start\n"));
|
|
|
|
if (!brd || brd->magic != DGNC_BOARD_MAGIC)
|
|
return -ENODEV;
|
|
|
|
DPR_INIT(("dgnc_finalize_board_init() - start #2\n"));
|
|
|
|
if (brd->irq) {
|
|
rc = request_irq(brd->irq, brd->bd_ops->intr, IRQF_SHARED, "DGNC", brd);
|
|
|
|
if (rc) {
|
|
printk("Failed to hook IRQ %d\n",brd->irq);
|
|
brd->state = BOARD_FAILED;
|
|
brd->dpastatus = BD_NOFEP;
|
|
rc = -ENODEV;
|
|
} else {
|
|
DPR_INIT(("Requested and received usage of IRQ %d\n", brd->irq));
|
|
}
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* Remap PCI memory.
|
|
*/
|
|
static void dgnc_do_remap(struct dgnc_board *brd)
|
|
{
|
|
|
|
if (!brd || brd->magic != DGNC_BOARD_MAGIC)
|
|
return;
|
|
|
|
brd->re_map_membase = ioremap(brd->membase, 0x1000);
|
|
|
|
DPR_INIT(("remapped mem: 0x%p\n", brd->re_map_membase));
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* Function:
|
|
*
|
|
* dgnc_poll_handler
|
|
*
|
|
* Author:
|
|
*
|
|
* Scott H Kilau
|
|
*
|
|
* Parameters:
|
|
*
|
|
* dummy -- ignored
|
|
*
|
|
* Return Values:
|
|
*
|
|
* none
|
|
*
|
|
* Description:
|
|
*
|
|
* As each timer expires, it determines (a) whether the "transmit"
|
|
* waiter needs to be woken up, and (b) whether the poller needs to
|
|
* be rescheduled.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void dgnc_poll_handler(ulong dummy)
|
|
{
|
|
struct dgnc_board *brd;
|
|
unsigned long lock_flags;
|
|
int i;
|
|
unsigned long new_time;
|
|
|
|
dgnc_poll_counter++;
|
|
|
|
/*
|
|
* Do not start the board state machine until
|
|
* driver tells us its up and running, and has
|
|
* everything it needs.
|
|
*/
|
|
if (dgnc_driver_state != DRIVER_READY) {
|
|
goto schedule_poller;
|
|
}
|
|
|
|
/* Go thru each board, kicking off a tasklet for each if needed */
|
|
for (i = 0; i < dgnc_NumBoards; i++) {
|
|
brd = dgnc_Board[i];
|
|
|
|
DGNC_LOCK(brd->bd_lock, lock_flags);
|
|
|
|
/* If board is in a failed state, don't bother scheduling a tasklet */
|
|
if (brd->state == BOARD_FAILED) {
|
|
DGNC_UNLOCK(brd->bd_lock, lock_flags);
|
|
continue;
|
|
}
|
|
|
|
/* Schedule a poll helper task */
|
|
tasklet_schedule(&brd->helper_tasklet);
|
|
|
|
DGNC_UNLOCK(brd->bd_lock, lock_flags);
|
|
}
|
|
|
|
schedule_poller:
|
|
|
|
/*
|
|
* Schedule ourself back at the nominal wakeup interval.
|
|
*/
|
|
DGNC_LOCK(dgnc_poll_lock, lock_flags);
|
|
dgnc_poll_time += dgnc_jiffies_from_ms(dgnc_poll_tick);
|
|
|
|
new_time = dgnc_poll_time - jiffies;
|
|
|
|
if ((ulong) new_time >= 2 * dgnc_poll_tick) {
|
|
dgnc_poll_time = jiffies + dgnc_jiffies_from_ms(dgnc_poll_tick);
|
|
}
|
|
|
|
init_timer(&dgnc_poll_timer);
|
|
dgnc_poll_timer.function = dgnc_poll_handler;
|
|
dgnc_poll_timer.data = 0;
|
|
dgnc_poll_timer.expires = dgnc_poll_time;
|
|
DGNC_UNLOCK(dgnc_poll_lock, lock_flags);
|
|
|
|
if (!dgnc_poll_stop)
|
|
add_timer(&dgnc_poll_timer);
|
|
}
|
|
|
|
/*
|
|
* dgnc_init_globals()
|
|
*
|
|
* This is where we initialize the globals from the static insmod
|
|
* configuration variables. These are declared near the head of
|
|
* this file.
|
|
*/
|
|
static void dgnc_init_globals(void)
|
|
{
|
|
int i = 0;
|
|
|
|
dgnc_rawreadok = rawreadok;
|
|
dgnc_trcbuf_size = trcbuf_size;
|
|
dgnc_debug = debug;
|
|
|
|
for (i = 0; i < MAXBOARDS; i++) {
|
|
dgnc_Board[i] = NULL;
|
|
}
|
|
|
|
init_timer(&dgnc_poll_timer);
|
|
}
|
|
|
|
|
|
/************************************************************************
|
|
*
|
|
* Utility functions
|
|
*
|
|
************************************************************************/
|
|
|
|
/*
|
|
* dgnc_ms_sleep()
|
|
*
|
|
* Put the driver to sleep for x ms's
|
|
*
|
|
* Returns 0 if timed out, !0 (showing signal) if interrupted by a signal.
|
|
*/
|
|
int dgnc_ms_sleep(ulong ms)
|
|
{
|
|
current->state = TASK_INTERRUPTIBLE;
|
|
schedule_timeout((ms * HZ) / 1000);
|
|
return signal_pending(current);
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* dgnc_ioctl_name() : Returns a text version of each ioctl value.
|
|
*/
|
|
char *dgnc_ioctl_name(int cmd)
|
|
{
|
|
switch(cmd) {
|
|
|
|
case TCGETA: return "TCGETA";
|
|
case TCGETS: return "TCGETS";
|
|
case TCSETA: return "TCSETA";
|
|
case TCSETS: return "TCSETS";
|
|
case TCSETAW: return "TCSETAW";
|
|
case TCSETSW: return "TCSETSW";
|
|
case TCSETAF: return "TCSETAF";
|
|
case TCSETSF: return "TCSETSF";
|
|
case TCSBRK: return "TCSBRK";
|
|
case TCXONC: return "TCXONC";
|
|
case TCFLSH: return "TCFLSH";
|
|
case TIOCGSID: return "TIOCGSID";
|
|
|
|
case TIOCGETD: return "TIOCGETD";
|
|
case TIOCSETD: return "TIOCSETD";
|
|
case TIOCGWINSZ: return "TIOCGWINSZ";
|
|
case TIOCSWINSZ: return "TIOCSWINSZ";
|
|
|
|
case TIOCMGET: return "TIOCMGET";
|
|
case TIOCMSET: return "TIOCMSET";
|
|
case TIOCMBIS: return "TIOCMBIS";
|
|
case TIOCMBIC: return "TIOCMBIC";
|
|
|
|
/* from digi.h */
|
|
case DIGI_SETA: return "DIGI_SETA";
|
|
case DIGI_SETAW: return "DIGI_SETAW";
|
|
case DIGI_SETAF: return "DIGI_SETAF";
|
|
case DIGI_SETFLOW: return "DIGI_SETFLOW";
|
|
case DIGI_SETAFLOW: return "DIGI_SETAFLOW";
|
|
case DIGI_GETFLOW: return "DIGI_GETFLOW";
|
|
case DIGI_GETAFLOW: return "DIGI_GETAFLOW";
|
|
case DIGI_GETA: return "DIGI_GETA";
|
|
case DIGI_GEDELAY: return "DIGI_GEDELAY";
|
|
case DIGI_SEDELAY: return "DIGI_SEDELAY";
|
|
case DIGI_GETCUSTOMBAUD: return "DIGI_GETCUSTOMBAUD";
|
|
case DIGI_SETCUSTOMBAUD: return "DIGI_SETCUSTOMBAUD";
|
|
case TIOCMODG: return "TIOCMODG";
|
|
case TIOCMODS: return "TIOCMODS";
|
|
case TIOCSDTR: return "TIOCSDTR";
|
|
case TIOCCDTR: return "TIOCCDTR";
|
|
|
|
default: return "unknown";
|
|
}
|
|
}
|