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SubjectRe: [ patch 6/7] drivers/serial/jsm: new serial device driver
Greg KH wrote:

>On Fri, Mar 04, 2005 at 04:08:44PM -0500, Wen Xiong wrote:
>
>
>>+/************************************************************************
>>+ * Structure used with ioctl commands for DIGI parameters.
>>+ ************************************************************************/
>>+struct digi_t {
>>+ unsigned short digi_flags; /* Flags (see above) */
>>+ unsigned short digi_maxcps; /* Max printer CPS */
>>+ unsigned short digi_maxchar; /* Max chars in print queue */
>>+ unsigned short digi_bufsize; /* Buffer size */
>>+ unsigned char digi_onlen; /* Length of ON string */
>>+ unsigned char digi_offlen; /* Length of OFF string */
>>+ char digi_onstr[DIGI_PLEN]; /* Printer on string */
>>+ char digi_offstr[DIGI_PLEN]; /* Printer off string */
>>+ char digi_term[DIGI_TSIZ]; /* terminal string */
>>+};
>>
>>
>
>Oops, don't use _t for a structure name please.
>
>
>
>>+#ifndef __JSM_DRIVER_H
>>+#define __JSM_DRIVER_H
>>+
>>+#include <linux/kernel.h>
>>+#include <linux/version.h>
>>+#include <linux/types.h> /* To pick up the varions Linux types */
>>+#include <linux/tty.h>
>>+#include <linux/serial_core.h>
>>+#include <linux/serial_reg.h>
>>+#include <linux/interrupt.h> /* For irqreturn_t type */
>>+#include <linux/module.h>
>>+#include <linux/moduleparam.h>
>>+#include <linux/kdev_t.h>
>>+#include <linux/pci.h>
>>+#include <linux/pci_ids.h>
>>+#include <linux/device.h>
>>+#include <linux/config.h>
>>
>>
>
>Don't put header files in header files if you can help it. It really
>isn't needed here, and odds are, you are including files you don't
>really need for each of the different driver .c files. The build will
>go faster if you don't do that.
>
>Also, check your ordering, some of those .h files already included the
>ones above it.
>
>
>
>>+#include "digi.h" /* Digi specific ioctl header */
>>
>>
>
>Why do you have your own ioctls? Please do not add any new ones to the
>kernel.
>
>
>
>>+#define DRVSTR "jsm" /* Driver name string */
>>
>>
>
>What is this for?
>
>
>
>>+#define DPRINTK(nlevel, klevel, fmt, args...) \
>>+ (void)((DBG_##nlevel & debug) && \
>>+ printk(KERN_##klevel "%s: " fmt, \
>>+ __FUNCTION__, ## args));
>>
>>
>
>Please use dev_dbg() or at least dev_printk() for this. It provides
>consistancy with the rest of the kernel, and it helps identify your
>device much better.
>
>
>
>>+#define JSM_MAJOR(x) (imajor(x))
>>+#define JSM_MINOR(x) (iminor(x))
>>
>>
>
>Not needed, please don't use.
>
>
>
>>+#ifndef _POSIX_VDISABLE
>>+#define _POSIX_VDISABLE '\0'
>>+#endif
>>
>>
>
>What would have defined that before?
>
>
>
>>+/*
>>+ * Our Global Variables.
>>+ */
>>+extern struct uart_driver jsm_uart_driver;
>>+extern struct board_ops jsm_neo_ops;
>>+extern int debug;
>>+extern int rawreadok;
>>
>>
>
>Both of these are bad global variable names.
>
>
>
>>+extern int jsm_driver_state; /* The state of the driver */
>>+extern char *jsm_driver_state_text[];/* Array of driver state text */
>>+
>>+extern spinlock_t jsm_board_head_lock;
>>+static LIST_HEAD(jsm_board_head);
>>
>>
>
>Hm, static variable in a header file? bad...
>
>
>
>>+/*************************************************************************
>>+ *
>>+ * Prototypes for non-static functions used in more than one module
>>+ *
>>+ *************************************************************************/
>>+extern char *jsm_ioctl_name(int cmd);
>>+extern int get_jsm_board_number(void);
>>
>>
>
>Bad name for a global function, put the "jsm" at the front please.
>
>thanks,
>
>greg k-h
>-
>To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
>the body of a message to majordomo@vger.kernel.org
>More majordomo info at http://vger.kernel.org/majordomo-info.html
>Please read the FAQ at http://www.tux.org/lkml/
>
>
>
Thanks for your reviewing!
Since some tools in Digi company need these new ioctls to access device
driver. I still keep these new ioctls.

Thanks,
wendy
diff -Nuar linux-2.6.11.org/drivers/serial/jsm/digi.h linux-2.6.11.new/drivers/serial/jsm/digi.h
--- linux-2.6.11.org/drivers/serial/jsm/digi.h 1969-12-31 18:00:00.000000000 -0600
+++ linux-2.6.11.new/drivers/serial/jsm/digi.h 2005-03-04 11:22:27.558933144 -0600
@@ -0,0 +1,387 @@
+/************************************************************************
+ * Copyright 2003 Digi International (www.digi.com)
+ *
+ * Copyright (C) 2004 IBM Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 * Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ *
+ * Contact Information:
+ * Scott H Kilau <Scott_Kilau@digi.com>
+ * Wendy Xiong <wendyx@us.ltcfwd.linux.ibm.com>
+ *
+ ***********************************************************************/
+
+#ifndef __DIGI_H
+#define __DIGI_H
+
+/************************************************************************
+ *** Definitions for Digi ditty(1) command.
+ ************************************************************************/
+
+/************************************************************************
+ * This module provides application access to special Digi
+ * serial line enhancements which are not standard UNIX(tm) features.
+ ************************************************************************/
+
+#if !defined(TIOCMODG)
+
+#define TIOCMODG ('d'<<8) | 250 /* get modem ctrl state */
+#define TIOCMODS ('d'<<8) | 251 /* set modem ctrl state */
+
+#ifndef TIOCM_LE
+#define TIOCM_LE 0x01 /* line enable */
+#define TIOCM_DTR 0x02 /* data terminal ready */
+#define TIOCM_RTS 0x04 /* request to send */
+#define TIOCM_ST 0x08 /* secondary transmit */
+#define TIOCM_SR 0x10 /* secondary receive */
+#define TIOCM_CTS 0x20 /* clear to send */
+#define TIOCM_CAR 0x40 /* carrier detect */
+#define TIOCM_RNG 0x80 /* ring indicator */
+#define TIOCM_DSR 0x100 /* data set ready */
+#define TIOCM_RI TIOCM_RNG /* ring (alternate) */
+#define TIOCM_CD TIOCM_CAR /* carrier detect (alt) */
+#endif
+
+#endif
+
+#if !defined(TIOCMSET)
+#define TIOCMSET ('d'<<8) | 252 /* set modem ctrl state */
+#define TIOCMGET ('d'<<8) | 253 /* set modem ctrl state */
+#endif
+
+#if !defined(TIOCMBIC)
+#define TIOCMBIC ('d'<<8) | 254 /* set modem ctrl state */
+#define TIOCMBIS ('d'<<8) | 255 /* set modem ctrl state */
+#endif
+
+
+#if !defined(TIOCSDTR)
+#define TIOCSDTR ('e'<<8) | 0 /* set DTR */
+#define TIOCCDTR ('e'<<8) | 1 /* clear DTR */
+#endif
+
+/************************************************************************
+ * Ioctl command arguments for DIGI parameters.
+ ************************************************************************/
+#define DIGI_GETA ('e'<<8) | 94 /* Read params */
+#define DIGI_SETA ('e'<<8) | 95 /* Set params */
+#define DIGI_SETAW ('e'<<8) | 96 /* Drain & set params */
+#define DIGI_SETAF ('e'<<8) | 97 /* Drain, flush & set params */
+#define DIGI_KME ('e'<<8) | 98 /* Read/Write Host */
+#define DIGI_GETFLOW ('e'<<8) | 99 /* Get startc/stopc flow */
+#define DIGI_SETFLOW ('e'<<8) | 100 /* Set startc/stopc flow */
+#define DIGI_GETAFLOW ('e'<<8) | 101 /* Get Aux. startc/stopc */
+#define DIGI_SETAFLOW ('e'<<8) | 102 /* Set Aux. startc/stopc */
+#define DIGI_GEDELAY ('d'<<8) | 246 /* Get edelay */
+#define DIGI_SEDELAY ('d'<<8) | 247 /* Set edelay */
+
+struct digiflow_t {
+ unsigned char startc; /* flow cntl start char */
+ unsigned char stopc; /* flow cntl stop char */
+};
+
+#ifdef FLOW_2200
+#define F2200_GETA ('e'<<8) | 104 /* Get 2x36 flow cntl flags */
+#define F2200_SETAW ('e'<<8) | 105 /* Set 2x36 flow cntl flags */
+#define F2200_MASK 0x03 /* 2200 flow cntl bit mask */
+#define FCNTL_2200 0x01 /* 2x36 terminal flow cntl */
+#define PCNTL_2200 0x02 /* 2x36 printer flow cntl */
+#define F2200_XON 0xf8
+#define P2200_XON 0xf9
+#define F2200_XOFF 0xfa
+#define P2200_XOFF 0xfb
+
+#define FXOFF_MASK 0x03 /* 2200 flow status mask */
+#define RCVD_FXOFF 0x01 /* 2x36 Terminal XOFF rcvd */
+#define RCVD_PXOFF 0x02 /* 2x36 Printer XOFF rcvd */
+#endif
+
+/************************************************************************
+ * Values for digi_flags
+ ************************************************************************/
+#define DIGI_IXON 0x0001 /* Handle IXON in the FEP */
+#define DIGI_FAST 0x0002 /* Fast baud rates */
+#define RTSPACE 0x0004 /* RTS input flow control */
+#define CTSPACE 0x0008 /* CTS output flow control */
+#define DSRPACE 0x0010 /* DSR output flow control */
+#define DCDPACE 0x0020 /* DCD output flow control */
+#define DTRPACE 0x0040 /* DTR input flow control */
+#define DIGI_COOK 0x0080 /* Cooked processing done in FEP */
+#define DIGI_FORCEDCD 0x0100 /* Force carrier */
+#define DIGI_ALTPIN 0x0200 /* Alternate RJ-45 pin config */
+#define DIGI_AIXON 0x0400 /* Aux flow control in fep */
+#define DIGI_PRINTER 0x0800 /* Hold port open for flow cntrl*/
+#define DIGI_PP_INPUT 0x1000 /* Change parallel port to input*/
+#define DIGI_DTR_TOGGLE 0x2000 /* Support DTR Toggle */
+#define DIGI_422 0x4000 /* for 422/232 selectable panel */
+#define DIGI_RTS_TOGGLE 0x8000 /* Support RTS Toggle */
+
+/************************************************************************
+ * These options are not supported on the comxi.
+ ************************************************************************/
+#define DIGI_COMXI (DIGI_FAST|DIGI_COOK|DSRPACE|DCDPACE|DTRPACE)
+
+#define DIGI_PLEN 28 /* String length */
+#define DIGI_TSIZ 10 /* Terminal string len */
+
+/************************************************************************
+ * Structure used with ioctl commands for DIGI parameters.
+ ************************************************************************/
+struct digi_t {
+ unsigned short digi_flags; /* Flags (see above) */
+ unsigned short digi_maxcps; /* Max printer CPS */
+ unsigned short digi_maxchar; /* Max chars in print queue */
+ unsigned short digi_bufsize; /* Buffer size */
+ unsigned char digi_onlen; /* Length of ON string */
+ unsigned char digi_offlen; /* Length of OFF string */
+ char digi_onstr[DIGI_PLEN]; /* Printer on string */
+ char digi_offstr[DIGI_PLEN]; /* Printer off string */
+ char digi_term[DIGI_TSIZ]; /* terminal string */
+};
+
+#define PCXI_TYPE 1 /* Board type at the designated port is a PC/Xi */
+#define PCXM_TYPE 2 /* Board type at the designated port is a PC/Xm */
+#define PCXE_TYPE 3 /* Board type at the designated port is a PC/Xe */
+#define MCXI_TYPE 4 /* Board type at the designated port is a MC/Xi */
+#define COMXI_TYPE 5 /* Board type at the designated port is a COM/Xi */
+
+ /* Non-Zero Result codes. */
+#define RESULT_NOBDFND 1 /* A Digi product at that port is not config installed */
+#define RESULT_NODESCT 2 /* A memory descriptor was not obtainable */
+#define RESULT_NOOSSIG 3 /* FEP/OS signature was not detected on the board */
+#define RESULT_TOOSML 4 /* Too small an area to shrink. */
+#define RESULT_NOCHAN 5 /* Channel structure for the board was not found */
+
+/************************************************************************
+ * Structure to get driver status information
+ ************************************************************************/
+struct digi_dinfo {
+ u8 dinfo_nboards; /* # boards configured */
+ char dinfo_reserved[12]; /* for future expansion */
+ char dinfo_version[16]; /* driver version */
+};
+
+/************************************************************************
+ * Structure used with ioctl commands for per-board information
+ *
+ * physsize and memsize differ when board has "windowed" memory
+ ************************************************************************/
+struct digi_info {
+ unsigned int info_bdnum; /* Board number (0 based) */
+ unsigned int info_ioport; /* io port address */
+ unsigned long info_physaddr; /* memory address */
+ unsigned int info_physsize; /* Size of host mem window */
+ unsigned int info_memsize; /* Amount of dual-port mem */
+ /* on board */
+ unsigned short info_bdtype; /* Board type */
+ unsigned short info_nports; /* number of ports */
+ char info_bdstate; /* board state */
+ char info_reserved[7]; /* for future expansion */
+};
+
+struct digi_stat {
+ unsigned int info_chan; /* Channel number (0 based) */
+ unsigned int info_brd; /* Board number (0 based) */
+ unsigned int info_cflag; /* cflag for channel */
+ unsigned int info_iflag; /* iflag for channel */
+ unsigned int info_oflag; /* oflag for channel */
+ unsigned int info_mstat; /* mstat for channel */
+ unsigned int info_tx_data; /* tx_data for channel */
+ unsigned int info_rx_data; /* rx_data for channel */
+ unsigned int info_hflow; /* hflow for channel */
+ unsigned int info_reserved[8]; /* for future expansion */
+};
+
+/***********************************************************************
+ *
+ * Structure used with ioctl commands for per-channel information
+ *
+ ************************************************************************/
+struct digi_ch {
+ unsigned int info_bdnum; /* Board number (0 based) */
+ unsigned int info_channel; /* Channel index number */
+ unsigned int info_ch_cflag; /* Channel cflag */
+ unsigned int info_ch_iflag; /* Channel iflag */
+ unsigned int info_ch_oflag; /* Channel oflag */
+ unsigned int info_chsize; /* Channel structure size */
+ unsigned int info_sleep_stat; /* sleep status */
+ dev_t info_dev; /* device number */
+ unsigned char info_initstate; /* Channel init state */
+ unsigned char info_running; /* Channel running state */
+ int reserved[8]; /* reserved for future use */
+};
+
+/*
+* This structure is used with the DIGI_FEPCMD ioctl to
+* tell the driver which port to send the command for.
+*/
+struct digi_cmd {
+ int cmd;
+ int word;
+ int ncmds;
+ int chan; /* channel index (zero based) */
+ int bdid; /* board index (zero based) */
+};
+
+struct digi_getbuffer /* Struct for holding buffer use counts */
+{
+ unsigned long tIn;
+ unsigned long tOut;
+ unsigned long rxbuf;
+ unsigned long txbuf;
+ unsigned long txdone;
+};
+
+struct digi_getcounter
+{
+ unsigned long norun; /* number of UART overrun errors */
+ unsigned long noflow; /* number of buffer overflow errors */
+ unsigned long nframe; /* number of framing errors */
+ unsigned long nparity; /* number of parity errors */
+ unsigned long nbreak; /* number of breaks received */
+ unsigned long rbytes; /* number of received bytes */
+ unsigned long tbytes; /* number of bytes transmitted fully */
+};
+
+/*
+* info_sleep_stat defines
+*/
+#define INFO_RUNWAIT 0x0001
+#define INFO_WOPEN 0x0002
+#define INFO_TTIOW 0x0004
+#define INFO_CH_RWAIT 0x0008
+#define INFO_CH_WEMPTY 0x0010
+#define INFO_CH_WLOW 0x0020
+#define INFO_XXBUF_BUSY 0x0040
+
+
+/* Board type definitions */
+
+#define SUBTYPE 0007
+#define T_PCXI 0000
+#define T_PCXM 0001
+#define T_PCXE 0002
+#define T_PCXR 0003
+#define T_SP 0004
+#define T_SP_PLUS 0005
+
+#define T_HERC 0000
+#define T_HOU 0001
+#define T_LON 0002
+#define T_CHA 0003
+
+#define T_NEO 0000
+#define T_CLASSIC 0001
+
+#define FAMILY 0070
+#define T_COMXI 0000
+#define T_PCXX 0010
+#define T_CX 0020
+#define T_EPC 0030
+#define T_PCLITE 0040
+#define T_SPXX 0050
+#define T_AVXX 0060
+#define T_DXB 0070
+#define T_A2K_4_8 0070
+#define BUSTYPE 0700
+#define T_ISABUS 0000
+#define T_MCBUS 0100
+#define T_EISABUS 0200
+#define T_PCIBUS 0400
+
+/* Board State Definitions */
+
+#define BD_RUNNING 0x0
+#define BD_REASON 0x7f
+#define BD_NOTFOUND 0x1
+#define BD_NOIOPORT 0x2
+#define BD_NOMEM 0x3
+#define BD_NOBIOS 0x4
+#define BD_NOFEP 0x5
+#define BD_FAILED 0x6
+#define BD_ALLOCATED 0x7
+#define BD_TRIBOOT 0x8
+#define BD_BADKME 0x80
+
+#define DIGI_SPOLL ('d'<<8) | 254 /* change poller rate */
+
+#define DIGI_SETCUSTOMBAUD _IOW('e', 106, int) /* Set integer baud rate */
+#define DIGI_GETCUSTOMBAUD _IOR('e', 107, int) /* Get integer baud rate */
+
+#define DIGI_REALPORT_GETBUFFERS ('e'<<8 ) | 108
+#define DIGI_REALPORT_SENDIMMEDIATE ('e'<<8 ) | 109
+#define DIGI_REALPORT_GETCOUNTERS ('e'<<8 ) | 110
+#define DIGI_REALPORT_GETEVENTS ('e'<<8 ) | 111
+
+#define EV_OPU 0x0001 //!<Output paused by client
+#define EV_OPS 0x0002 //!<Output paused by reqular sw flowctrl
+#define EV_OPX 0x0004 //!<Output paused by extra sw flowctrl
+#define EV_OPH 0x0008 //!<Output paused by hw flowctrl
+#define EV_OPT 0x0800 //!<Output paused for RTS Toggle predelay
+
+#define EV_IPU 0x0010 //!<Input paused unconditionally by user
+#define EV_IPS 0x0020 //!<Input paused by high/low water marks
+#define EV_IPA 0x0400 //!<Input paused by pattern alarm module
+
+#define EV_TXB 0x0040 //!<Transmit break pending
+#define EV_TXI 0x0080 //!<Transmit immediate pending
+#define EV_TXF 0x0100 //!<Transmit flowctrl char pending
+#define EV_RXB 0x0200 //!<Break received
+
+#define EV_OPALL 0x080f //!<Output pause flags
+#define EV_IPALL 0x0430 //!<Input pause flags
+
+/*
+ * This structure holds data needed for the intelligent <--> nonintelligent
+ * DPA translation
+ */
+struct ni_info {
+ int board;
+ int channel;
+ int dtr;
+ int rts;
+ int cts;
+ int dsr;
+ int ri;
+ int dcd;
+ int curtx;
+ int currx;
+ unsigned short iflag;
+ unsigned short oflag;
+ unsigned short cflag;
+ unsigned short lflag;
+ unsigned int mstat;
+ unsigned char hflow;
+
+ unsigned char xmit_stopped;
+ unsigned char recv_stopped;
+
+ unsigned int baud;
+};
+
+/* Ioctls needed for dpa operation */
+
+#define DIGI_GETSTAT ('d'<<8) | 244 /* get board info */
+#define DIGI_GETCH ('d'<<8) | 245 /* get board info */
+#define DIGI_GETDD ('d'<<8) | 248 /* get driver info */
+#define DIGI_GETBD ('d'<<8) | 249 /* get board info */
+#define DIGI_GET_NI_INFO ('d'<<8) | 250 /* nonintelligent state snfo */
+
+/* Other special ioctls */
+#define DIGI_TIMERIRQ ('d'<<8) | 251 /* Enable/disable RS_TIMER use */
+#define DIGI_LOOPBACK ('d'<<8) | 252 /* Enable/disable UART internal loopback */
+
+#endif /* DIGI_H */
diff -Nuar linux-2.6.11.org/drivers/serial/jsm/jsm_driver.h linux-2.6.11.new/drivers/serial/jsm/jsm_driver.h
--- linux-2.6.11.org/drivers/serial/jsm/jsm_driver.h 1969-12-31 18:00:00.000000000 -0600
+++ linux-2.6.11.new/drivers/serial/jsm/jsm_driver.h 2005-03-04 11:22:19.222869456 -0600
@@ -0,0 +1,465 @@
+/************************************************************************
+ * Copyright 2003 Digi International (www.digi.com)
+ *
+ * Copyright (C) 2004 IBM Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 * Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ *
+ * Contact Information:
+ * Scott H Kilau <Scott_Kilau@digi.com>
+ * Wendy Xiong <wendyx@us.ltcfwd.linux.ibm.com>
+ *
+ ***********************************************************************/
+
+#ifndef __JSM_DRIVER_H
+#define __JSM_DRIVER_H
+
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/types.h> /* To pick up the varions Linux types */
+#include <linux/tty.h>
+#include <linux/serial_core.h>
+#include <linux/serial_reg.h>
+#include <linux/interrupt.h> /* For irqreturn_t type */
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kdev_t.h>
+#include <linux/pci.h>
+#include <linux/pci_ids.h>
+#include <linux/device.h>
+#include <linux/config.h>
+
+
+#include "digi.h" /* Digi specific ioctl header */
+
+#define DRVSTR "jsm" /* Driver name string */
+
+#define TRC_TO_IOCTL 1
+
+/*
+ * Debugging levels can be set using debug insmod variable
+ * They can also be compiled out completely.
+ */
+enum {
+ DBG_INIT = 0x01,
+ DBG_BASIC = 0x02,
+ DBG_CORE = 0x04,
+ DBG_OPEN = 0x08,
+ DBG_CLOSE = 0x10,
+ DBG_READ = 0x20,
+ DBG_WRITE = 0x40,
+ DBG_IOCTL = 0x80,
+ DBG_PROC = 0x100,
+ DBG_PARAM = 0x200,
+ DBG_PSCAN = 0x400,
+ DBG_EVENT = 0x800,
+ DBG_DRAIN = 0x1000,
+ DBG_MSIGS = 0x2000,
+ DBG_MGMT = 0x4000,
+ DBG_INTR = 0x8000,
+ DBG_CARR = 0x10000,
+};
+
+#define DPRINTK(nlevel, klevel, fmt, args...) \
+ (void)((DBG_##nlevel & debug) && \
+ printk(KERN_##klevel "%s: " fmt, \
+ __FUNCTION__, ## args));
+
+#define MAXPORTS 8
+#define MAX_STOPS_SENT 5
+
+/* 4 extra for alignment play space */
+#define WRITEBUFLEN ((4096) + 4)
+#define MYFLIPLEN N_TTY_BUF_SIZE
+
+#define JSM_MAJOR(x) (imajor(x))
+#define JSM_MINOR(x) (iminor(x))
+
+#ifndef _POSIX_VDISABLE
+#define _POSIX_VDISABLE '\0'
+#endif
+
+/*
+ * All the possible states the driver can be while being loaded.
+ */
+enum {
+ DRIVER_INITIALIZED = 0,
+ DRIVER_READY
+};
+
+/*
+ * All the possible states the board can be while booting up.
+ */
+enum {
+ BOARD_FAILED = 0,
+ BOARD_FOUND,
+ BOARD_READY
+};
+
+struct board_id {
+ u8 *name;
+ u32 maxports;
+};
+
+struct jsm_board;
+struct jsm_channel;
+
+/************************************************************************
+ * Per board operations structure *
+ ************************************************************************/
+struct board_ops {
+ irqreturn_t (*intr) (int irq, void *voidbrd, struct pt_regs *regs);
+ void (*uart_init) (struct jsm_channel *ch);
+ void (*uart_off) (struct jsm_channel *ch);
+ void (*param) (struct jsm_channel *ch);
+ void (*assert_modem_signals) (struct jsm_channel *ch);
+ void (*flush_uart_write) (struct jsm_channel *ch);
+ void (*flush_uart_read) (struct jsm_channel *ch);
+ void (*disable_receiver) (struct jsm_channel *ch);
+ void (*enable_receiver) (struct jsm_channel *ch);
+ void (*send_break) (struct jsm_channel *ch);
+ void (*clear_break) (struct jsm_channel *ch, int);
+ void (*send_start_character) (struct jsm_channel *ch);
+ void (*send_stop_character) (struct jsm_channel *ch);
+ void (*copy_data_from_queue_to_uart) (struct jsm_channel *ch);
+ u32 (*get_uart_bytes_left) (struct jsm_channel *ch);
+ void (*send_immediate_char) (struct jsm_channel *ch, unsigned char);
+};
+
+/*
+ * Per-board information
+ */
+struct jsm_board
+{
+ int boardnum; /* Board number: 0-32 */
+
+ int type; /* Type of board */
+ char *name; /* Product Name */
+ u8 rev; /* PCI revision ID */
+ struct pci_dev *pci_dev;
+ u32 maxports; /* MAX ports this board can handle */
+
+ spinlock_t bd_lock; /* Used to protect board */
+
+ spinlock_t bd_intr_lock; /* Used to protect the poller tasklet and
+ * the interrupt routine from each other.
+ */
+
+ u32 state; /* State of card. */
+ wait_queue_head_t state_wait; /* Place to sleep on for state change */
+
+ u32 nasync; /* Number of ports on card */
+
+ u32 irq; /* Interrupt request number */
+ u64 intr_count; /* Count of interrupts */
+
+ u64 membase; /* Start of base memory of the card */
+ u64 membase_end; /* End of base memory of the card */
+
+ u8 *re_map_membase;/* Remapped memory of the card */
+
+ u64 iobase; /* Start of io base of the card */
+ u64 iobase_end; /* End of io base of the card */
+
+ u32 bd_uart_offset; /* Space between each UART */
+
+ struct jsm_channel *channels[MAXPORTS]; /* array of pointers to our channels. */
+
+ u32 jsm_major_serial_registered;
+ u32 jsm_serial_major;
+
+ char *flipbuf; /* Our flip buffer, alloced if board is found */
+
+ u16 dpatype; /* The board "type", as defined by DPA */
+ u16 dpastatus; /* The board "status", as defined by DPA */
+
+ u32 bd_dividend; /* Board/UARTs specific dividend */
+
+ struct board_ops *bd_ops;
+
+ struct list_head jsm_board_entry;
+};
+
+/************************************************************************
+ * Device flag definitions for ch_flags.
+ ************************************************************************/
+#define CH_PRON 0x0001 /* Printer on string */
+#define CH_STOP 0x0002 /* Output is stopped */
+#define CH_STOPI 0x0004 /* Input is stopped */
+#define CH_CD 0x0008 /* Carrier is present */
+#define CH_FCAR 0x0010 /* Carrier forced on */
+#define CH_HANGUP 0x0020 /* Hangup received */
+
+#define CH_RECEIVER_OFF 0x0040 /* Receiver is off */
+#define CH_OPENING 0x0080 /* Port in fragile open state */
+#define CH_CLOSING 0x0100 /* Port in fragile close state */
+#define CH_FIFO_ENABLED 0x0200 /* Port has FIFOs enabled */
+#define CH_TX_FIFO_EMPTY 0x0400 /* TX Fifo is completely empty */
+#define CH_TX_FIFO_LWM 0x0800 /* TX Fifo is below Low Water */
+#define CH_BREAK_SENDING 0x1000 /* Break is being sent */
+#define CH_LOOPBACK 0x2000 /* Channel is in lookback mode */
+#define CH_FLIPBUF_IN_USE 0x4000 /* Channel's flipbuf is in use */
+#define CH_BAUD0 0x08000 /* Used for checking B0 transitions */
+
+/* Our Read/Error/Write queue sizes */
+#define RQUEUEMASK 0x1FFF /* 8 K - 1 */
+#define EQUEUEMASK 0x1FFF /* 8 K - 1 */
+#define WQUEUEMASK 0x0FFF /* 4 K - 1 */
+#define RQUEUESIZE (RQUEUEMASK + 1)
+#define EQUEUESIZE RQUEUESIZE
+#define WQUEUESIZE (WQUEUEMASK + 1)
+
+/************************************************************************
+ * Channel information structure.
+ ************************************************************************/
+struct jsm_channel {
+ struct uart_port uart_port;
+ struct jsm_board *ch_bd; /* Board structure pointer */
+
+ spinlock_t ch_lock; /* provide for serialization */
+ wait_queue_head_t ch_flags_wait;
+
+ u32 ch_portnum; /* Port number, 0 offset. */
+ u32 ch_open_count; /* open count */
+ u32 ch_flags; /* Channel flags */
+
+ u64 ch_close_delay; /* How long we should drop RTS/DTR for */
+
+ u64 ch_cpstime; /* Time for CPS calculations */
+
+ tcflag_t ch_c_iflag; /* channel iflags */
+ tcflag_t ch_c_cflag; /* channel cflags */
+ tcflag_t ch_c_oflag; /* channel oflags */
+ tcflag_t ch_c_lflag; /* channel lflags */
+ u8 ch_stopc; /* Stop character */
+ u8 ch_startc; /* Start character */
+
+ u32 ch_old_baud; /* Cache of the current baud */
+ u32 ch_custom_speed;/* Custom baud, if set */
+
+ u32 ch_wopen; /* Waiting for open process cnt */
+
+ u8 ch_mostat; /* FEP output modem status */
+ u8 ch_mistat; /* FEP input modem status */
+
+ struct neo_uart_struct *ch_neo_uart; /* Pointer to the "mapped" UART struct */
+ u8 ch_cached_lsr; /* Cached value of the LSR register */
+
+ u8 *ch_rqueue; /* Our read queue buffer - malloc'ed */
+ u16 ch_r_head; /* Head location of the read queue */
+ u16 ch_r_tail; /* Tail location of the read queue */
+
+ u8 *ch_equeue; /* Our error queue buffer - malloc'ed */
+ u16 ch_e_head; /* Head location of the error queue */
+ u16 ch_e_tail; /* Tail location of the error queue */
+
+ u8 *ch_wqueue; /* Our write queue buffer - malloc'ed */
+ u16 ch_w_head; /* Head location of the write queue */
+ u16 ch_w_tail; /* Tail location of the write queue */
+
+ u64 ch_rxcount; /* total of data received so far */
+ u64 ch_txcount; /* total of data transmitted so far */
+
+ u8 ch_r_tlevel; /* Receive Trigger level */
+ u8 ch_t_tlevel; /* Transmit Trigger level */
+
+ u8 ch_r_watermark; /* Receive Watermark */
+
+
+ u32 ch_stops_sent; /* How many times I have sent a stop character
+ * to try to stop the other guy sending.
+ */
+ u64 ch_err_parity; /* Count of parity errors on channel */
+ u64 ch_err_frame; /* Count of framing errors on channel */
+ u64 ch_err_break; /* Count of breaks on channel */
+ u64 ch_err_overrun; /* Count of overruns on channel */
+
+ u64 ch_xon_sends; /* Count of xons transmitted */
+ u64 ch_xoff_sends; /* Count of xoffs transmitted */
+};
+
+/************************************************************************
+ * Per channel/port NEO UART structure *
+ ************************************************************************
+ * Base Structure Entries Usage Meanings to Host *
+ * *
+ * W = read write R = read only *
+ * U = Unused. *
+ ************************************************************************/
+
+struct neo_uart_struct {
+ u8 txrx; /* WR RHR/THR - Holding Reg */
+ u8 ier; /* WR IER - Interrupt Enable Reg */
+ u8 isr_fcr; /* WR ISR/FCR - Interrupt Status Reg/Fifo Control Reg */
+ u8 lcr; /* WR LCR - Line Control Reg */
+ u8 mcr; /* WR MCR - Modem Control Reg */
+ u8 lsr; /* WR LSR - Line Status Reg */
+ u8 msr; /* WR MSR - Modem Status Reg */
+ u8 spr; /* WR SPR - Scratch Pad Reg */
+ u8 fctr; /* WR FCTR - Feature Control Reg */
+ u8 efr; /* WR EFR - Enhanced Function Reg */
+ u8 tfifo; /* WR TXCNT/TXTRG - Transmit FIFO Reg */
+ u8 rfifo; /* WR RXCNT/RXTRG - Recieve FIFO Reg */
+ u8 xoffchar1; /* WR XOFF 1 - XOff Character 1 Reg */
+ u8 xoffchar2; /* WR XOFF 2 - XOff Character 2 Reg */
+ u8 xonchar1; /* WR XON 1 - Xon Character 1 Reg */
+ u8 xonchar2; /* WR XON 2 - XOn Character 2 Reg */
+
+ u8 reserved1[0x2ff - 0x200]; /* U Reserved by Exar */
+ u8 txrxburst[64]; /* RW 64 bytes of RX/TX FIFO Data */
+ u8 reserved2[0x37f - 0x340]; /* U Reserved by Exar */
+ u8 rxburst_with_errors[64]; /* R 64 bytes of RX FIFO Data + LSR */
+};
+
+/* Where to read the extended interrupt register (32bits instead of 8bits) */
+#define UART_17158_POLL_ADDR_OFFSET 0x80
+
+/*
+ * These are the redefinitions for the FCTR on the XR17C158, since
+ * Exar made them different than their earlier design. (XR16C854)
+ */
+
+/* These are only applicable when table D is selected */
+#define UART_17158_FCTR_RTS_NODELAY 0x00
+#define UART_17158_FCTR_RTS_4DELAY 0x01
+#define UART_17158_FCTR_RTS_6DELAY 0x02
+#define UART_17158_FCTR_RTS_8DELAY 0x03
+#define UART_17158_FCTR_RTS_12DELAY 0x12
+#define UART_17158_FCTR_RTS_16DELAY 0x05
+#define UART_17158_FCTR_RTS_20DELAY 0x13
+#define UART_17158_FCTR_RTS_24DELAY 0x06
+#define UART_17158_FCTR_RTS_28DELAY 0x14
+#define UART_17158_FCTR_RTS_32DELAY 0x07
+#define UART_17158_FCTR_RTS_36DELAY 0x16
+#define UART_17158_FCTR_RTS_40DELAY 0x08
+#define UART_17158_FCTR_RTS_44DELAY 0x09
+#define UART_17158_FCTR_RTS_48DELAY 0x10
+#define UART_17158_FCTR_RTS_52DELAY 0x11
+
+#define UART_17158_FCTR_RTS_IRDA 0x10
+#define UART_17158_FCTR_RS485 0x20
+#define UART_17158_FCTR_TRGA 0x00
+#define UART_17158_FCTR_TRGB 0x40
+#define UART_17158_FCTR_TRGC 0x80
+#define UART_17158_FCTR_TRGD 0xC0
+
+/* 17158 trigger table selects.. */
+#define UART_17158_FCTR_BIT6 0x40
+#define UART_17158_FCTR_BIT7 0x80
+
+/* 17158 TX/RX memmapped buffer offsets */
+#define UART_17158_RX_FIFOSIZE 64
+#define UART_17158_TX_FIFOSIZE 64
+
+/* 17158 Extended IIR's */
+#define UART_17158_IIR_RDI_TIMEOUT 0x0C /* Receiver data TIMEOUT */
+#define UART_17158_IIR_XONXOFF 0x10 /* Received an XON/XOFF char */
+#define UART_17158_IIR_HWFLOW_STATE_CHANGE 0x20 /* CTS/DSR or RTS/DTR state change */
+#define UART_17158_IIR_FIFO_ENABLED 0xC0 /* 16550 FIFOs are Enabled */
+
+/*
+ * These are the extended interrupts that get sent
+ * back to us from the UART's 32bit interrupt register
+ */
+#define UART_17158_RX_LINE_STATUS 0x1 /* RX Ready */
+#define UART_17158_RXRDY_TIMEOUT 0x2 /* RX Ready Timeout */
+#define UART_17158_TXRDY 0x3 /* TX Ready */
+#define UART_17158_MSR 0x4 /* Modem State Change */
+#define UART_17158_TX_AND_FIFO_CLR 0x40 /* Transmitter Holding Reg Empty */
+#define UART_17158_RX_FIFO_DATA_ERROR 0x80 /* UART detected an RX FIFO Data error */
+
+/*
+ * These are the EXTENDED definitions for the 17C158's Interrupt
+ * Enable Register.
+ */
+#define UART_17158_EFR_ECB 0x10 /* Enhanced control bit */
+#define UART_17158_EFR_IXON 0x2 /* Receiver compares Xon1/Xoff1 */
+#define UART_17158_EFR_IXOFF 0x8 /* Transmit Xon1/Xoff1 */
+#define UART_17158_EFR_RTSDTR 0x40 /* Auto RTS/DTR Flow Control Enable */
+#define UART_17158_EFR_CTSDSR 0x80 /* Auto CTS/DSR Flow COntrol Enable */
+
+#define UART_17158_XOFF_DETECT 0x1 /* Indicates whether chip saw an incoming XOFF char */
+#define UART_17158_XON_DETECT 0x2 /* Indicates whether chip saw an incoming XON char */
+
+#define UART_17158_IER_RSVD1 0x10 /* Reserved by Exar */
+#define UART_17158_IER_XOFF 0x20 /* Xoff Interrupt Enable */
+#define UART_17158_IER_RTSDTR 0x40 /* Output Interrupt Enable */
+#define UART_17158_IER_CTSDSR 0x80 /* Input Interrupt Enable */
+
+#define PCI_DEVICE_NEO_4_PCI_NAME "Neo 4 PCI"
+#define PCI_DEVICE_NEO_8_PCI_NAME "Neo 8 PCI"
+#define PCI_DEVICE_NEO_2DB9_PCI_NAME "Neo 2 - DB9 Universal PCI"
+#define PCI_DEVICE_NEO_2DB9PRI_PCI_NAME "Neo 2 - DB9 Universal PCI - Powered Ring Indicator"
+#define PCI_DEVICE_NEO_2RJ45_PCI_NAME "Neo 2 - RJ45 Universal PCI"
+#define PCI_DEVICE_NEO_2RJ45PRI_PCI_NAME "Neo 2 - RJ45 Universal PCI - Powered Ring Indicator"
+#define PCI_DEVICE_NEO_1_422_PCI_NAME "Neo 1 422 PCI"
+#define PCI_DEVICE_NEO_1_422_485_PCI_NAME "Neo 1 422/485 PCI"
+#define PCI_DEVICE_NEO_2_422_485_PCI_NAME "Neo 2 422/485 PCI"
+
+/*
+ * Our Global Variables.
+ */
+extern struct uart_driver jsm_uart_driver;
+extern struct board_ops jsm_neo_ops;
+extern int debug;
+extern int rawreadok;
+
+extern int jsm_driver_state; /* The state of the driver */
+extern char *jsm_driver_state_text[];/* Array of driver state text */
+
+extern spinlock_t jsm_board_head_lock;
+static LIST_HEAD(jsm_board_head);
+
+/*************************************************************************
+ *
+ * Prototypes for non-static functions used in more than one module
+ *
+ *************************************************************************/
+extern char *jsm_ioctl_name(int cmd);
+extern int get_jsm_board_number(void);
+
+int jsm_mgmt_open(struct inode *inode, struct file *file);
+int jsm_mgmt_close(struct inode *inode, struct file *file);
+int jsm_mgmt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg);
+
+int jsm_tty_write(struct uart_port *port);
+int jsm_tty_register(struct jsm_board *brd);
+
+int jsm_tty_init(struct jsm_board *);
+int jsm_uart_port_init(struct jsm_board *);
+int jsm_remove_uart_port(struct jsm_board *);
+
+void jsm_tty_uninit(struct jsm_board *);
+
+void jsm_input(struct jsm_channel *ch);
+void jsm_carrier(struct jsm_channel *ch);
+void jsm_check_queue_flow_control(struct jsm_channel *ch);
+
+
+int jsm_tty_class_init(void);
+int jsm_tty_class_destroy(void);
+void jsm_create_driver_sysfiles(struct device_driver *);
+void jsm_remove_driver_sysfiles(struct device_driver *);
+void jsm_create_ports_sysfiles(struct jsm_board *, struct device *);
+void jsm_remove_ports_sysfiles(struct jsm_board *, struct device *);
+void jsm_tty_register_device(struct jsm_channel *, struct device *);
+void jsm_tty_unregister_device(struct jsm_channel *);
+
+#endif
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  Last update: 2005-03-22 14:10    [from the cache]
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