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Message-ID: <63f5c934-24da-b17e-dc6d-8bf5ca31dbd6@kernel.org>
Date: Wed, 22 Feb 2023 09:51:24 +0100
From: Jiri Slaby <jirislaby@...nel.org>
To: gregkh@...uxfoundation.org
Cc: linux-kernel@...r.kernel.org, Hyunwoo Kim <imv4bel@...il.com>,
Harald Welte <laforge@...monks.org>,
Lubomir Rintel <lkundrak@...sk>, Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH 2/2] char: pcmcia: remove all the drivers
I forgot to amend, please ignore this.
On 22. 02. 23, 9:50, Jiri Slaby (SUSE) wrote:
> These char PCMCIA drivers are buggy[1] and receive only minimal care. It
> was concluded[2], that we should try to remove most pcmcia drivers
> completely. Let's start with these char broken one.
>
> Note that I also removed a UAPI header: include/uapi/linux/cm4000_cs.h.
> I found only coccinelle tests mentioning some ioctl constants from that
> file. But they are not actually used. Anyway, should someone complain,
> we may reintroduce the header (or its parts).
>
> [1] https://lore.kernel.org/all/f41c2765-80e0-48bc-b1e4-8cfd3230fd4a@www.fastmail.com/
> [2] https://lore.kernel.org/all/c5b39544-a4fb-4796-a046-0b9be9853787@app.fastmail.com/
>
> Signed-off-by: Jiri Slaby (SUSE) <jirislaby@...nel.org>
> Cc: "Hyunwoo Kim" <imv4bel@...il.com>
> Cc: Harald Welte <laforge@...monks.org>
> Cc: Lubomir Rintel <lkundrak@...sk>
> Cc: Arnd Bergmann <arnd@...db.de>
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> ---
> Documentation/process/magic-number.rst | 1 -
> .../it_IT/process/magic-number.rst | 1 -
> .../sp_SP/process/magic-number.rst | 1 -
> .../zh_CN/process/magic-number.rst | 1 -
> .../zh_TW/process/magic-number.rst | 1 -
> .../userspace-api/ioctl/ioctl-number.rst | 1 -
> MAINTAINERS | 17 -
> arch/powerpc/configs/ppc6xx_defconfig | 2 -
> drivers/char/Makefile | 1 -
> drivers/char/pcmcia/Kconfig | 59 -
> drivers/char/pcmcia/Makefile | 11 -
> drivers/char/pcmcia/cm4000_cs.c | 1912 --------
> drivers/char/pcmcia/cm4040_cs.c | 684 ---
> drivers/char/pcmcia/cm4040_cs.h | 48 -
> drivers/char/pcmcia/scr24x_cs.c | 359 --
> drivers/char/pcmcia/synclink_cs.c | 4280 -----------------
> include/linux/cm4000_cs.h | 11 -
> 17 files changed, 7390 deletions(-)
> delete mode 100644 drivers/char/pcmcia/Kconfig
> delete mode 100644 drivers/char/pcmcia/Makefile
> delete mode 100644 drivers/char/pcmcia/cm4000_cs.c
> delete mode 100644 drivers/char/pcmcia/cm4040_cs.c
> delete mode 100644 drivers/char/pcmcia/cm4040_cs.h
> delete mode 100644 drivers/char/pcmcia/scr24x_cs.c
> delete mode 100644 drivers/char/pcmcia/synclink_cs.c
> delete mode 100644 include/linux/cm4000_cs.h
>
> diff --git a/Documentation/process/magic-number.rst b/Documentation/process/magic-number.rst
> index 64b5948fc1d4..7029c3c084ee 100644
> --- a/Documentation/process/magic-number.rst
> +++ b/Documentation/process/magic-number.rst
> @@ -72,7 +72,6 @@ PG_MAGIC 'P' pg_{read,write}_hdr ``include/linux/
> APM_BIOS_MAGIC 0x4101 apm_user ``arch/x86/kernel/apm_32.c``
> FASYNC_MAGIC 0x4601 fasync_struct ``include/linux/fs.h``
> SLIP_MAGIC 0x5302 slip ``drivers/net/slip.h``
> -MGSLPC_MAGIC 0x5402 mgslpc_info ``drivers/char/pcmcia/synclink_cs.c``
> BAYCOM_MAGIC 0x19730510 baycom_state ``drivers/net/baycom_epp.c``
> HDLCDRV_MAGIC 0x5ac6e778 hdlcdrv_state ``include/linux/hdlcdrv.h``
> KV_MAGIC 0x5f4b565f kernel_vars_s ``arch/mips/include/asm/sn/klkernvars.h``
> diff --git a/Documentation/translations/it_IT/process/magic-number.rst b/Documentation/translations/it_IT/process/magic-number.rst
> index 02eb7eb2448e..ae92ab633c16 100644
> --- a/Documentation/translations/it_IT/process/magic-number.rst
> +++ b/Documentation/translations/it_IT/process/magic-number.rst
> @@ -78,7 +78,6 @@ PG_MAGIC 'P' pg_{read,write}_hdr ``include/linux/
> APM_BIOS_MAGIC 0x4101 apm_user ``arch/x86/kernel/apm_32.c``
> FASYNC_MAGIC 0x4601 fasync_struct ``include/linux/fs.h``
> SLIP_MAGIC 0x5302 slip ``drivers/net/slip.h``
> -MGSLPC_MAGIC 0x5402 mgslpc_info ``drivers/char/pcmcia/synclink_cs.c``
> BAYCOM_MAGIC 0x19730510 baycom_state ``drivers/net/baycom_epp.c``
> HDLCDRV_MAGIC 0x5ac6e778 hdlcdrv_state ``include/linux/hdlcdrv.h``
> KV_MAGIC 0x5f4b565f kernel_vars_s ``arch/mips/include/asm/sn/klkernvars.h``
> diff --git a/Documentation/translations/sp_SP/process/magic-number.rst b/Documentation/translations/sp_SP/process/magic-number.rst
> index 2b62cec34e8e..7c7dfb4ba80b 100644
> --- a/Documentation/translations/sp_SP/process/magic-number.rst
> +++ b/Documentation/translations/sp_SP/process/magic-number.rst
> @@ -77,7 +77,6 @@ PG_MAGIC 'P' pg_{read,write}_hdr ``include/linux/
> APM_BIOS_MAGIC 0x4101 apm_user ``arch/x86/kernel/apm_32.c``
> FASYNC_MAGIC 0x4601 fasync_struct ``include/linux/fs.h``
> SLIP_MAGIC 0x5302 slip ``drivers/net/slip.h``
> -MGSLPC_MAGIC 0x5402 mgslpc_info ``drivers/char/pcmcia/synclink_cs.c``
> BAYCOM_MAGIC 0x19730510 baycom_state ``drivers/net/baycom_epp.c``
> HDLCDRV_MAGIC 0x5ac6e778 hdlcdrv_state ``include/linux/hdlcdrv.h``
> KV_MAGIC 0x5f4b565f kernel_vars_s ``arch/mips/include/asm/sn/klkernvars.h``
> diff --git a/Documentation/translations/zh_CN/process/magic-number.rst b/Documentation/translations/zh_CN/process/magic-number.rst
> index 0617ce125e12..37ed33034134 100644
> --- a/Documentation/translations/zh_CN/process/magic-number.rst
> +++ b/Documentation/translations/zh_CN/process/magic-number.rst
> @@ -61,7 +61,6 @@ PG_MAGIC 'P' pg_{read,write}_hdr ``include/linux/
> APM_BIOS_MAGIC 0x4101 apm_user ``arch/x86/kernel/apm_32.c``
> FASYNC_MAGIC 0x4601 fasync_struct ``include/linux/fs.h``
> SLIP_MAGIC 0x5302 slip ``drivers/net/slip.h``
> -MGSLPC_MAGIC 0x5402 mgslpc_info ``drivers/char/pcmcia/synclink_cs.c``
> BAYCOM_MAGIC 0x19730510 baycom_state ``drivers/net/baycom_epp.c``
> HDLCDRV_MAGIC 0x5ac6e778 hdlcdrv_state ``include/linux/hdlcdrv.h``
> KV_MAGIC 0x5f4b565f kernel_vars_s ``arch/mips/include/asm/sn/klkernvars.h``
> diff --git a/Documentation/translations/zh_TW/process/magic-number.rst b/Documentation/translations/zh_TW/process/magic-number.rst
> index f3f7082e17c6..1d48e1bbf5f2 100644
> --- a/Documentation/translations/zh_TW/process/magic-number.rst
> +++ b/Documentation/translations/zh_TW/process/magic-number.rst
> @@ -64,7 +64,6 @@ PG_MAGIC 'P' pg_{read,write}_hdr ``include/linux/
> APM_BIOS_MAGIC 0x4101 apm_user ``arch/x86/kernel/apm_32.c``
> FASYNC_MAGIC 0x4601 fasync_struct ``include/linux/fs.h``
> SLIP_MAGIC 0x5302 slip ``drivers/net/slip.h``
> -MGSLPC_MAGIC 0x5402 mgslpc_info ``drivers/char/pcmcia/synclink_cs.c``
> BAYCOM_MAGIC 0x19730510 baycom_state ``drivers/net/baycom_epp.c``
> HDLCDRV_MAGIC 0x5ac6e778 hdlcdrv_state ``include/linux/hdlcdrv.h``
> KV_MAGIC 0x5f4b565f kernel_vars_s ``arch/mips/include/asm/sn/klkernvars.h``
> diff --git a/Documentation/userspace-api/ioctl/ioctl-number.rst b/Documentation/userspace-api/ioctl/ioctl-number.rst
> index 0a1882e296ae..176e8fc3f31b 100644
> --- a/Documentation/userspace-api/ioctl/ioctl-number.rst
> +++ b/Documentation/userspace-api/ioctl/ioctl-number.rst
> @@ -222,7 +222,6 @@ Code Seq# Include File Comments
> 'b' 00-FF conflict! bit3 vme host bridge
> <mailto:natalia@...hefk.nikhef.nl>
> 'b' 00-0F linux/dma-buf.h conflict!
> -'c' all linux/cm4000_cs.h conflict!
> 'c' 00-7F linux/comstats.h conflict!
> 'c' 00-7F linux/coda.h conflict!
> 'c' 00-1F linux/chio.h conflict!
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 2f78e795e1fd..4e27fd843be9 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -15260,18 +15260,6 @@ S: Maintained
> F: Documentation/filesystems/omfs.rst
> F: fs/omfs/
>
> -OMNIKEY CARDMAN 4000 DRIVER
> -M: Harald Welte <laforge@...monks.org>
> -S: Maintained
> -F: drivers/char/pcmcia/cm4000_cs.c
> -F: include/linux/cm4000_cs.h
> -F: include/uapi/linux/cm4000_cs.h
> -
> -OMNIKEY CARDMAN 4040 DRIVER
> -M: Harald Welte <laforge@...monks.org>
> -S: Maintained
> -F: drivers/char/pcmcia/cm4040_cs.*
> -
> OMNIVISION OG01A1B SENSOR DRIVER
> M: Shawn Tu <shawnx.tu@...el.com>
> L: linux-media@...r.kernel.org
> @@ -18524,11 +18512,6 @@ F: include/linux/wait.h
> F: include/uapi/linux/sched.h
> F: kernel/sched/
>
> -SCR24X CHIP CARD INTERFACE DRIVER
> -M: Lubomir Rintel <lkundrak@...sk>
> -S: Supported
> -F: drivers/char/pcmcia/scr24x_cs.c
> -
> SCSI RDMA PROTOCOL (SRP) INITIATOR
> M: Bart Van Assche <bvanassche@....org>
> L: linux-rdma@...r.kernel.org
> diff --git a/arch/powerpc/configs/ppc6xx_defconfig b/arch/powerpc/configs/ppc6xx_defconfig
> index 110258277959..d8729b94400e 100644
> --- a/arch/powerpc/configs/ppc6xx_defconfig
> +++ b/arch/powerpc/configs/ppc6xx_defconfig
> @@ -614,8 +614,6 @@ CONFIG_HW_RANDOM=y
> CONFIG_HW_RANDOM_VIRTIO=m
> CONFIG_NVRAM=y
> CONFIG_DTLK=m
> -CONFIG_CARDMAN_4000=m
> -CONFIG_CARDMAN_4040=m
> CONFIG_IPWIRELESS=m
> CONFIG_I2C_CHARDEV=m
> CONFIG_I2C_HYDRA=m
> diff --git a/drivers/char/Makefile b/drivers/char/Makefile
> index b5271efd32ef..22ae5935dd2e 100644
> --- a/drivers/char/Makefile
> +++ b/drivers/char/Makefile
> @@ -36,7 +36,6 @@ obj-$(CONFIG_TELCLOCK) += tlclk.o
>
> obj-$(CONFIG_MWAVE) += mwave/
> obj-y += agp/
> -obj-$(CONFIG_PCMCIA) += pcmcia/
>
> obj-$(CONFIG_HANGCHECK_TIMER) += hangcheck-timer.o
> obj-$(CONFIG_TCG_TPM) += tpm/
> diff --git a/drivers/char/pcmcia/Kconfig b/drivers/char/pcmcia/Kconfig
> deleted file mode 100644
> index 26724990074c..000000000000
> --- a/drivers/char/pcmcia/Kconfig
> +++ /dev/null
> @@ -1,59 +0,0 @@
> -# SPDX-License-Identifier: GPL-2.0-only
> -#
> -# PCMCIA character device configuration
> -#
> -
> -menu "PCMCIA character devices"
> - depends on PCMCIA!=n
> -
> -config SYNCLINK_CS
> - tristate "SyncLink PC Card support"
> - depends on PCMCIA && TTY
> - help
> - Enable support for the SyncLink PC Card serial adapter, running
> - asynchronous and HDLC communications up to 512Kbps. The port is
> - selectable for RS-232, V.35, RS-449, RS-530, and X.21
> -
> - This driver may be built as a module ( = code which can be
> - inserted in and removed from the running kernel whenever you want).
> - The module will be called synclink_cs. If you want to do that, say M
> - here.
> -
> -config CARDMAN_4000
> - tristate "Omnikey Cardman 4000 support"
> - depends on PCMCIA
> - select BITREVERSE
> - help
> - Enable support for the Omnikey Cardman 4000 PCMCIA Smartcard
> - reader.
> -
> - This kernel driver requires additional userspace support, either
> - by the vendor-provided PC/SC ifd_handler (http://www.omnikey.com/),
> - or via the cm4000 backend of OpenCT (http://www.opensc-project.org/opensc).
> -
> -config CARDMAN_4040
> - tristate "Omnikey CardMan 4040 support"
> - depends on PCMCIA
> - help
> - Enable support for the Omnikey CardMan 4040 PCMCIA Smartcard
> - reader.
> -
> - This card is basically a USB CCID device connected to a FIFO
> - in I/O space. To use the kernel driver, you will need either the
> - PC/SC ifdhandler provided from the Omnikey homepage
> - (http://www.omnikey.com/), or a current development version of OpenCT
> - (http://www.opensc-project.org/opensc).
> -
> -config SCR24X
> - tristate "SCR24x Chip Card Interface support"
> - depends on PCMCIA
> - help
> - Enable support for the SCR24x PCMCIA Chip Card Interface.
> -
> - To compile this driver as a module, choose M here.
> - The module will be called scr24x_cs..
> -
> - If unsure say N.
> -
> -endmenu
> -
> diff --git a/drivers/char/pcmcia/Makefile b/drivers/char/pcmcia/Makefile
> deleted file mode 100644
> index 024eed1c4ca5..000000000000
> --- a/drivers/char/pcmcia/Makefile
> +++ /dev/null
> @@ -1,11 +0,0 @@
> -# SPDX-License-Identifier: GPL-2.0-only
> -#
> -# drivers/char/pcmcia/Makefile
> -#
> -# Makefile for the Linux PCMCIA char device drivers.
> -#
> -
> -obj-$(CONFIG_SYNCLINK_CS) += synclink_cs.o
> -obj-$(CONFIG_CARDMAN_4000) += cm4000_cs.o
> -obj-$(CONFIG_CARDMAN_4040) += cm4040_cs.o
> -obj-$(CONFIG_SCR24X) += scr24x_cs.o
> diff --git a/drivers/char/pcmcia/cm4000_cs.c b/drivers/char/pcmcia/cm4000_cs.c
> deleted file mode 100644
> index e656f42a28ac..000000000000
> --- a/drivers/char/pcmcia/cm4000_cs.c
> +++ /dev/null
> @@ -1,1912 +0,0 @@
> - /*
> - * A driver for the PCMCIA Smartcard Reader "Omnikey CardMan Mobile 4000"
> - *
> - * cm4000_cs.c support.linux@...ikey.com
> - *
> - * Tue Oct 23 11:32:43 GMT 2001 herp - cleaned up header files
> - * Sun Jan 20 10:11:15 MET 2002 herp - added modversion header files
> - * Thu Nov 14 16:34:11 GMT 2002 mh - added PPS functionality
> - * Tue Nov 19 16:36:27 GMT 2002 mh - added SUSPEND/RESUME functionailty
> - * Wed Jul 28 12:55:01 CEST 2004 mh - kernel 2.6 adjustments
> - *
> - * current version: 2.4.0gm4
> - *
> - * (C) 2000,2001,2002,2003,2004 Omnikey AG
> - *
> - * (C) 2005-2006 Harald Welte <laforge@...monks.org>
> - * - Adhere to Kernel process/coding-style.rst
> - * - Port to 2.6.13 "new" style PCMCIA
> - * - Check for copy_{from,to}_user return values
> - * - Use nonseekable_open()
> - * - add class interface for udev device creation
> - *
> - * All rights reserved. Licensed under dual BSD/GPL license.
> - */
> -
> -#include <linux/kernel.h>
> -#include <linux/module.h>
> -#include <linux/slab.h>
> -#include <linux/init.h>
> -#include <linux/fs.h>
> -#include <linux/delay.h>
> -#include <linux/bitrev.h>
> -#include <linux/mutex.h>
> -#include <linux/uaccess.h>
> -#include <linux/io.h>
> -
> -#include <pcmcia/cistpl.h>
> -#include <pcmcia/cisreg.h>
> -#include <pcmcia/ciscode.h>
> -#include <pcmcia/ds.h>
> -
> -#include <linux/cm4000_cs.h>
> -
> -/* #define ATR_CSUM */
> -
> -#define reader_to_dev(x) (&x->p_dev->dev)
> -
> -/* n (debug level) is ignored */
> -/* additional debug output may be enabled by re-compiling with
> - * CM4000_DEBUG set */
> -/* #define CM4000_DEBUG */
> -#define DEBUGP(n, rdr, x, args...) do { \
> - dev_dbg(reader_to_dev(rdr), "%s:" x, \
> - __func__ , ## args); \
> - } while (0)
> -
> -static DEFINE_MUTEX(cmm_mutex);
> -
> -#define T_1SEC (HZ)
> -#define T_10MSEC msecs_to_jiffies(10)
> -#define T_20MSEC msecs_to_jiffies(20)
> -#define T_40MSEC msecs_to_jiffies(40)
> -#define T_50MSEC msecs_to_jiffies(50)
> -#define T_100MSEC msecs_to_jiffies(100)
> -#define T_500MSEC msecs_to_jiffies(500)
> -
> -static void cm4000_release(struct pcmcia_device *link);
> -
> -static int major; /* major number we get from the kernel */
> -
> -/* note: the first state has to have number 0 always */
> -
> -#define M_FETCH_ATR 0
> -#define M_TIMEOUT_WAIT 1
> -#define M_READ_ATR_LEN 2
> -#define M_READ_ATR 3
> -#define M_ATR_PRESENT 4
> -#define M_BAD_CARD 5
> -#define M_CARDOFF 6
> -
> -#define LOCK_IO 0
> -#define LOCK_MONITOR 1
> -
> -#define IS_AUTOPPS_ACT 6
> -#define IS_PROCBYTE_PRESENT 7
> -#define IS_INVREV 8
> -#define IS_ANY_T0 9
> -#define IS_ANY_T1 10
> -#define IS_ATR_PRESENT 11
> -#define IS_ATR_VALID 12
> -#define IS_CMM_ABSENT 13
> -#define IS_BAD_LENGTH 14
> -#define IS_BAD_CSUM 15
> -#define IS_BAD_CARD 16
> -
> -#define REG_FLAGS0(x) (x + 0)
> -#define REG_FLAGS1(x) (x + 1)
> -#define REG_NUM_BYTES(x) (x + 2)
> -#define REG_BUF_ADDR(x) (x + 3)
> -#define REG_BUF_DATA(x) (x + 4)
> -#define REG_NUM_SEND(x) (x + 5)
> -#define REG_BAUDRATE(x) (x + 6)
> -#define REG_STOPBITS(x) (x + 7)
> -
> -struct cm4000_dev {
> - struct pcmcia_device *p_dev;
> -
> - unsigned char atr[MAX_ATR];
> - unsigned char rbuf[512];
> - unsigned char sbuf[512];
> -
> - wait_queue_head_t devq; /* when removing cardman must not be
> - zeroed! */
> -
> - wait_queue_head_t ioq; /* if IO is locked, wait on this Q */
> - wait_queue_head_t atrq; /* wait for ATR valid */
> - wait_queue_head_t readq; /* used by write to wake blk.read */
> -
> - /* warning: do not move this struct group.
> - * initialising to zero depends on it - see ZERO_DEV below. */
> - struct_group(init,
> - unsigned char atr_csum;
> - unsigned char atr_len_retry;
> - unsigned short atr_len;
> - unsigned short rlen; /* bytes avail. after write */
> - unsigned short rpos; /* latest read pos. write zeroes */
> - unsigned char procbyte; /* T=0 procedure byte */
> - unsigned char mstate; /* state of card monitor */
> - unsigned char cwarn; /* slow down warning */
> - unsigned char flags0; /* cardman IO-flags 0 */
> - unsigned char flags1; /* cardman IO-flags 1 */
> - unsigned int mdelay; /* variable monitor speeds, in jiffies */
> -
> - unsigned int baudv; /* baud value for speed */
> - unsigned char ta1;
> - unsigned char proto; /* T=0, T=1, ... */
> - unsigned long flags; /* lock+flags (MONITOR,IO,ATR) * for concurrent
> - access */
> -
> - unsigned char pts[4];
> -
> - struct timer_list timer; /* used to keep monitor running */
> - int monitor_running;
> - );
> -};
> -
> -#define ZERO_DEV(dev) memset(&((dev)->init), 0, sizeof((dev)->init))
> -
> -static struct pcmcia_device *dev_table[CM4000_MAX_DEV];
> -static struct class *cmm_class;
> -
> -/* This table doesn't use spaces after the comma between fields and thus
> - * violates process/coding-style.rst. However, I don't really think wrapping it around will
> - * make it any clearer to read -HW */
> -static unsigned char fi_di_table[10][14] = {
> -/*FI 00 01 02 03 04 05 06 07 08 09 10 11 12 13 */
> -/*DI */
> -/* 0 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
> -/* 1 */ {0x01,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x91,0x11,0x11,0x11,0x11},
> -/* 2 */ {0x02,0x12,0x22,0x32,0x11,0x11,0x11,0x11,0x11,0x92,0xA2,0xB2,0x11,0x11},
> -/* 3 */ {0x03,0x13,0x23,0x33,0x43,0x53,0x63,0x11,0x11,0x93,0xA3,0xB3,0xC3,0xD3},
> -/* 4 */ {0x04,0x14,0x24,0x34,0x44,0x54,0x64,0x11,0x11,0x94,0xA4,0xB4,0xC4,0xD4},
> -/* 5 */ {0x00,0x15,0x25,0x35,0x45,0x55,0x65,0x11,0x11,0x95,0xA5,0xB5,0xC5,0xD5},
> -/* 6 */ {0x06,0x16,0x26,0x36,0x46,0x56,0x66,0x11,0x11,0x96,0xA6,0xB6,0xC6,0xD6},
> -/* 7 */ {0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11,0x11},
> -/* 8 */ {0x08,0x11,0x28,0x38,0x48,0x58,0x68,0x11,0x11,0x98,0xA8,0xB8,0xC8,0xD8},
> -/* 9 */ {0x09,0x19,0x29,0x39,0x49,0x59,0x69,0x11,0x11,0x99,0xA9,0xB9,0xC9,0xD9}
> -};
> -
> -#ifndef CM4000_DEBUG
> -#define xoutb outb
> -#define xinb inb
> -#else
> -static inline void xoutb(unsigned char val, unsigned short port)
> -{
> - pr_debug("outb(val=%.2x,port=%.4x)\n", val, port);
> - outb(val, port);
> -}
> -static inline unsigned char xinb(unsigned short port)
> -{
> - unsigned char val;
> -
> - val = inb(port);
> - pr_debug("%.2x=inb(%.4x)\n", val, port);
> -
> - return val;
> -}
> -#endif
> -
> -static inline unsigned char invert_revert(unsigned char ch)
> -{
> - return bitrev8(~ch);
> -}
> -
> -static void str_invert_revert(unsigned char *b, int len)
> -{
> - int i;
> -
> - for (i = 0; i < len; i++)
> - b[i] = invert_revert(b[i]);
> -}
> -
> -#define ATRLENCK(dev,pos) \
> - if (pos>=dev->atr_len || pos>=MAX_ATR) \
> - goto return_0;
> -
> -static unsigned int calc_baudv(unsigned char fidi)
> -{
> - unsigned int wcrcf, wbrcf, fi_rfu, di_rfu;
> -
> - fi_rfu = 372;
> - di_rfu = 1;
> -
> - /* FI */
> - switch ((fidi >> 4) & 0x0F) {
> - case 0x00:
> - wcrcf = 372;
> - break;
> - case 0x01:
> - wcrcf = 372;
> - break;
> - case 0x02:
> - wcrcf = 558;
> - break;
> - case 0x03:
> - wcrcf = 744;
> - break;
> - case 0x04:
> - wcrcf = 1116;
> - break;
> - case 0x05:
> - wcrcf = 1488;
> - break;
> - case 0x06:
> - wcrcf = 1860;
> - break;
> - case 0x07:
> - wcrcf = fi_rfu;
> - break;
> - case 0x08:
> - wcrcf = fi_rfu;
> - break;
> - case 0x09:
> - wcrcf = 512;
> - break;
> - case 0x0A:
> - wcrcf = 768;
> - break;
> - case 0x0B:
> - wcrcf = 1024;
> - break;
> - case 0x0C:
> - wcrcf = 1536;
> - break;
> - case 0x0D:
> - wcrcf = 2048;
> - break;
> - default:
> - wcrcf = fi_rfu;
> - break;
> - }
> -
> - /* DI */
> - switch (fidi & 0x0F) {
> - case 0x00:
> - wbrcf = di_rfu;
> - break;
> - case 0x01:
> - wbrcf = 1;
> - break;
> - case 0x02:
> - wbrcf = 2;
> - break;
> - case 0x03:
> - wbrcf = 4;
> - break;
> - case 0x04:
> - wbrcf = 8;
> - break;
> - case 0x05:
> - wbrcf = 16;
> - break;
> - case 0x06:
> - wbrcf = 32;
> - break;
> - case 0x07:
> - wbrcf = di_rfu;
> - break;
> - case 0x08:
> - wbrcf = 12;
> - break;
> - case 0x09:
> - wbrcf = 20;
> - break;
> - default:
> - wbrcf = di_rfu;
> - break;
> - }
> -
> - return (wcrcf / wbrcf);
> -}
> -
> -static unsigned short io_read_num_rec_bytes(unsigned int iobase,
> - unsigned short *s)
> -{
> - unsigned short tmp;
> -
> - tmp = *s = 0;
> - do {
> - *s = tmp;
> - tmp = inb(REG_NUM_BYTES(iobase)) |
> - (inb(REG_FLAGS0(iobase)) & 4 ? 0x100 : 0);
> - } while (tmp != *s);
> -
> - return *s;
> -}
> -
> -static int parse_atr(struct cm4000_dev *dev)
> -{
> - unsigned char any_t1, any_t0;
> - unsigned char ch, ifno;
> - int ix, done;
> -
> - DEBUGP(3, dev, "-> parse_atr: dev->atr_len = %i\n", dev->atr_len);
> -
> - if (dev->atr_len < 3) {
> - DEBUGP(5, dev, "parse_atr: atr_len < 3\n");
> - return 0;
> - }
> -
> - if (dev->atr[0] == 0x3f)
> - set_bit(IS_INVREV, &dev->flags);
> - else
> - clear_bit(IS_INVREV, &dev->flags);
> - ix = 1;
> - ifno = 1;
> - ch = dev->atr[1];
> - dev->proto = 0; /* XXX PROTO */
> - any_t1 = any_t0 = done = 0;
> - dev->ta1 = 0x11; /* defaults to 9600 baud */
> - do {
> - if (ifno == 1 && (ch & 0x10)) {
> - /* read first interface byte and TA1 is present */
> - dev->ta1 = dev->atr[2];
> - DEBUGP(5, dev, "Card says FiDi is 0x%.2x\n", dev->ta1);
> - ifno++;
> - } else if ((ifno == 2) && (ch & 0x10)) { /* TA(2) */
> - dev->ta1 = 0x11;
> - ifno++;
> - }
> -
> - DEBUGP(5, dev, "Yi=%.2x\n", ch & 0xf0);
> - ix += ((ch & 0x10) >> 4) /* no of int.face chars */
> - +((ch & 0x20) >> 5)
> - + ((ch & 0x40) >> 6)
> - + ((ch & 0x80) >> 7);
> - /* ATRLENCK(dev,ix); */
> - if (ch & 0x80) { /* TDi */
> - ch = dev->atr[ix];
> - if ((ch & 0x0f)) {
> - any_t1 = 1;
> - DEBUGP(5, dev, "card is capable of T=1\n");
> - } else {
> - any_t0 = 1;
> - DEBUGP(5, dev, "card is capable of T=0\n");
> - }
> - } else
> - done = 1;
> - } while (!done);
> -
> - DEBUGP(5, dev, "ix=%d noHist=%d any_t1=%d\n",
> - ix, dev->atr[1] & 15, any_t1);
> - if (ix + 1 + (dev->atr[1] & 0x0f) + any_t1 != dev->atr_len) {
> - DEBUGP(5, dev, "length error\n");
> - return 0;
> - }
> - if (any_t0)
> - set_bit(IS_ANY_T0, &dev->flags);
> -
> - if (any_t1) { /* compute csum */
> - dev->atr_csum = 0;
> -#ifdef ATR_CSUM
> - for (i = 1; i < dev->atr_len; i++)
> - dev->atr_csum ^= dev->atr[i];
> - if (dev->atr_csum) {
> - set_bit(IS_BAD_CSUM, &dev->flags);
> - DEBUGP(5, dev, "bad checksum\n");
> - goto return_0;
> - }
> -#endif
> - if (any_t0 == 0)
> - dev->proto = 1; /* XXX PROTO */
> - set_bit(IS_ANY_T1, &dev->flags);
> - }
> -
> - return 1;
> -}
> -
> -struct card_fixup {
> - char atr[12];
> - u_int8_t atr_len;
> - u_int8_t stopbits;
> -};
> -
> -static struct card_fixup card_fixups[] = {
> - { /* ACOS */
> - .atr = { 0x3b, 0xb3, 0x11, 0x00, 0x00, 0x41, 0x01 },
> - .atr_len = 7,
> - .stopbits = 0x03,
> - },
> - { /* Motorola */
> - .atr = {0x3b, 0x76, 0x13, 0x00, 0x00, 0x80, 0x62, 0x07,
> - 0x41, 0x81, 0x81 },
> - .atr_len = 11,
> - .stopbits = 0x04,
> - },
> -};
> -
> -static void set_cardparameter(struct cm4000_dev *dev)
> -{
> - int i;
> - unsigned int iobase = dev->p_dev->resource[0]->start;
> - u_int8_t stopbits = 0x02; /* ISO default */
> -
> - DEBUGP(3, dev, "-> set_cardparameter\n");
> -
> - dev->flags1 = dev->flags1 | (((dev->baudv - 1) & 0x0100) >> 8);
> - xoutb(dev->flags1, REG_FLAGS1(iobase));
> - DEBUGP(5, dev, "flags1 = 0x%02x\n", dev->flags1);
> -
> - /* set baudrate */
> - xoutb((unsigned char)((dev->baudv - 1) & 0xFF), REG_BAUDRATE(iobase));
> -
> - DEBUGP(5, dev, "baudv = %i -> write 0x%02x\n", dev->baudv,
> - ((dev->baudv - 1) & 0xFF));
> -
> - /* set stopbits */
> - for (i = 0; i < ARRAY_SIZE(card_fixups); i++) {
> - if (!memcmp(dev->atr, card_fixups[i].atr,
> - card_fixups[i].atr_len))
> - stopbits = card_fixups[i].stopbits;
> - }
> - xoutb(stopbits, REG_STOPBITS(iobase));
> -
> - DEBUGP(3, dev, "<- set_cardparameter\n");
> -}
> -
> -static int set_protocol(struct cm4000_dev *dev, struct ptsreq *ptsreq)
> -{
> -
> - unsigned long tmp, i;
> - unsigned short num_bytes_read;
> - unsigned char pts_reply[4];
> - ssize_t rc;
> - unsigned int iobase = dev->p_dev->resource[0]->start;
> -
> - rc = 0;
> -
> - DEBUGP(3, dev, "-> set_protocol\n");
> - DEBUGP(5, dev, "ptsreq->Protocol = 0x%.8x, ptsreq->Flags=0x%.8x, "
> - "ptsreq->pts1=0x%.2x, ptsreq->pts2=0x%.2x, "
> - "ptsreq->pts3=0x%.2x\n", (unsigned int)ptsreq->protocol,
> - (unsigned int)ptsreq->flags, ptsreq->pts1, ptsreq->pts2,
> - ptsreq->pts3);
> -
> - /* Fill PTS structure */
> - dev->pts[0] = 0xff;
> - dev->pts[1] = 0x00;
> - tmp = ptsreq->protocol;
> - while ((tmp = (tmp >> 1)) > 0)
> - dev->pts[1]++;
> - dev->proto = dev->pts[1]; /* Set new protocol */
> - dev->pts[1] = (0x01 << 4) | (dev->pts[1]);
> -
> - /* Correct Fi/Di according to CM4000 Fi/Di table */
> - DEBUGP(5, dev, "Ta(1) from ATR is 0x%.2x\n", dev->ta1);
> - /* set Fi/Di according to ATR TA(1) */
> - dev->pts[2] = fi_di_table[dev->ta1 & 0x0F][(dev->ta1 >> 4) & 0x0F];
> -
> - /* Calculate PCK character */
> - dev->pts[3] = dev->pts[0] ^ dev->pts[1] ^ dev->pts[2];
> -
> - DEBUGP(5, dev, "pts0=%.2x, pts1=%.2x, pts2=%.2x, pts3=%.2x\n",
> - dev->pts[0], dev->pts[1], dev->pts[2], dev->pts[3]);
> -
> - /* check card convention */
> - if (test_bit(IS_INVREV, &dev->flags))
> - str_invert_revert(dev->pts, 4);
> -
> - /* reset SM */
> - xoutb(0x80, REG_FLAGS0(iobase));
> -
> - /* Enable access to the message buffer */
> - DEBUGP(5, dev, "Enable access to the messages buffer\n");
> - dev->flags1 = 0x20 /* T_Active */
> - | (test_bit(IS_INVREV, &dev->flags) ? 0x02 : 0x00) /* inv parity */
> - | ((dev->baudv >> 8) & 0x01); /* MSB-baud */
> - xoutb(dev->flags1, REG_FLAGS1(iobase));
> -
> - DEBUGP(5, dev, "Enable message buffer -> flags1 = 0x%.2x\n",
> - dev->flags1);
> -
> - /* write challenge to the buffer */
> - DEBUGP(5, dev, "Write challenge to buffer: ");
> - for (i = 0; i < 4; i++) {
> - xoutb(i, REG_BUF_ADDR(iobase));
> - xoutb(dev->pts[i], REG_BUF_DATA(iobase)); /* buf data */
> -#ifdef CM4000_DEBUG
> - pr_debug("0x%.2x ", dev->pts[i]);
> - }
> - pr_debug("\n");
> -#else
> - }
> -#endif
> -
> - /* set number of bytes to write */
> - DEBUGP(5, dev, "Set number of bytes to write\n");
> - xoutb(0x04, REG_NUM_SEND(iobase));
> -
> - /* Trigger CARDMAN CONTROLLER */
> - xoutb(0x50, REG_FLAGS0(iobase));
> -
> - /* Monitor progress */
> - /* wait for xmit done */
> - DEBUGP(5, dev, "Waiting for NumRecBytes getting valid\n");
> -
> - for (i = 0; i < 100; i++) {
> - if (inb(REG_FLAGS0(iobase)) & 0x08) {
> - DEBUGP(5, dev, "NumRecBytes is valid\n");
> - break;
> - }
> - /* can not sleep as this is in atomic context */
> - mdelay(10);
> - }
> - if (i == 100) {
> - DEBUGP(5, dev, "Timeout waiting for NumRecBytes getting "
> - "valid\n");
> - rc = -EIO;
> - goto exit_setprotocol;
> - }
> -
> - DEBUGP(5, dev, "Reading NumRecBytes\n");
> - for (i = 0; i < 100; i++) {
> - io_read_num_rec_bytes(iobase, &num_bytes_read);
> - if (num_bytes_read >= 4) {
> - DEBUGP(2, dev, "NumRecBytes = %i\n", num_bytes_read);
> - if (num_bytes_read > 4) {
> - rc = -EIO;
> - goto exit_setprotocol;
> - }
> - break;
> - }
> - /* can not sleep as this is in atomic context */
> - mdelay(10);
> - }
> -
> - /* check whether it is a short PTS reply? */
> - if (num_bytes_read == 3)
> - i = 0;
> -
> - if (i == 100) {
> - DEBUGP(5, dev, "Timeout reading num_bytes_read\n");
> - rc = -EIO;
> - goto exit_setprotocol;
> - }
> -
> - DEBUGP(5, dev, "Reset the CARDMAN CONTROLLER\n");
> - xoutb(0x80, REG_FLAGS0(iobase));
> -
> - /* Read PPS reply */
> - DEBUGP(5, dev, "Read PPS reply\n");
> - for (i = 0; i < num_bytes_read; i++) {
> - xoutb(i, REG_BUF_ADDR(iobase));
> - pts_reply[i] = inb(REG_BUF_DATA(iobase));
> - }
> -
> -#ifdef CM4000_DEBUG
> - DEBUGP(2, dev, "PTSreply: ");
> - for (i = 0; i < num_bytes_read; i++) {
> - pr_debug("0x%.2x ", pts_reply[i]);
> - }
> - pr_debug("\n");
> -#endif /* CM4000_DEBUG */
> -
> - DEBUGP(5, dev, "Clear Tactive in Flags1\n");
> - xoutb(0x20, REG_FLAGS1(iobase));
> -
> - /* Compare ptsreq and ptsreply */
> - if ((dev->pts[0] == pts_reply[0]) &&
> - (dev->pts[1] == pts_reply[1]) &&
> - (dev->pts[2] == pts_reply[2]) && (dev->pts[3] == pts_reply[3])) {
> - /* setcardparameter according to PPS */
> - dev->baudv = calc_baudv(dev->pts[2]);
> - set_cardparameter(dev);
> - } else if ((dev->pts[0] == pts_reply[0]) &&
> - ((dev->pts[1] & 0xef) == pts_reply[1]) &&
> - ((pts_reply[0] ^ pts_reply[1]) == pts_reply[2])) {
> - /* short PTS reply, set card parameter to default values */
> - dev->baudv = calc_baudv(0x11);
> - set_cardparameter(dev);
> - } else
> - rc = -EIO;
> -
> -exit_setprotocol:
> - DEBUGP(3, dev, "<- set_protocol\n");
> - return rc;
> -}
> -
> -static int io_detect_cm4000(unsigned int iobase, struct cm4000_dev *dev)
> -{
> -
> - /* note: statemachine is assumed to be reset */
> - if (inb(REG_FLAGS0(iobase)) & 8) {
> - clear_bit(IS_ATR_VALID, &dev->flags);
> - set_bit(IS_CMM_ABSENT, &dev->flags);
> - return 0; /* detect CMM = 1 -> failure */
> - }
> - /* xoutb(0x40, REG_FLAGS1(iobase)); detectCMM */
> - xoutb(dev->flags1 | 0x40, REG_FLAGS1(iobase));
> - if ((inb(REG_FLAGS0(iobase)) & 8) == 0) {
> - clear_bit(IS_ATR_VALID, &dev->flags);
> - set_bit(IS_CMM_ABSENT, &dev->flags);
> - return 0; /* detect CMM=0 -> failure */
> - }
> - /* clear detectCMM again by restoring original flags1 */
> - xoutb(dev->flags1, REG_FLAGS1(iobase));
> - return 1;
> -}
> -
> -static void terminate_monitor(struct cm4000_dev *dev)
> -{
> -
> - /* tell the monitor to stop and wait until
> - * it terminates.
> - */
> - DEBUGP(3, dev, "-> terminate_monitor\n");
> - wait_event_interruptible(dev->devq,
> - test_and_set_bit(LOCK_MONITOR,
> - (void *)&dev->flags));
> -
> - /* now, LOCK_MONITOR has been set.
> - * allow a last cycle in the monitor.
> - * the monitor will indicate that it has
> - * finished by clearing this bit.
> - */
> - DEBUGP(5, dev, "Now allow last cycle of monitor!\n");
> - while (test_bit(LOCK_MONITOR, (void *)&dev->flags))
> - msleep(25);
> -
> - DEBUGP(5, dev, "Delete timer\n");
> - del_timer_sync(&dev->timer);
> -#ifdef CM4000_DEBUG
> - dev->monitor_running = 0;
> -#endif
> -
> - DEBUGP(3, dev, "<- terminate_monitor\n");
> -}
> -
> -/*
> - * monitor the card every 50msec. as a side-effect, retrieve the
> - * atr once a card is inserted. another side-effect of retrieving the
> - * atr is that the card will be powered on, so there is no need to
> - * power on the card explicitly from the application: the driver
> - * is already doing that for you.
> - */
> -
> -static void monitor_card(struct timer_list *t)
> -{
> - struct cm4000_dev *dev = from_timer(dev, t, timer);
> - unsigned int iobase = dev->p_dev->resource[0]->start;
> - unsigned short s;
> - struct ptsreq ptsreq;
> - int i, atrc;
> -
> - DEBUGP(7, dev, "-> monitor_card\n");
> -
> - /* if someone has set the lock for us: we're done! */
> - if (test_and_set_bit(LOCK_MONITOR, &dev->flags)) {
> - DEBUGP(4, dev, "About to stop monitor\n");
> - /* no */
> - dev->rlen =
> - dev->rpos =
> - dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
> - dev->mstate = M_FETCH_ATR;
> - clear_bit(LOCK_MONITOR, &dev->flags);
> - /* close et al. are sleeping on devq, so wake it */
> - wake_up_interruptible(&dev->devq);
> - DEBUGP(2, dev, "<- monitor_card (we are done now)\n");
> - return;
> - }
> -
> - /* try to lock io: if it is already locked, just add another timer */
> - if (test_and_set_bit(LOCK_IO, (void *)&dev->flags)) {
> - DEBUGP(4, dev, "Couldn't get IO lock\n");
> - goto return_with_timer;
> - }
> -
> - /* is a card/a reader inserted at all ? */
> - dev->flags0 = xinb(REG_FLAGS0(iobase));
> - DEBUGP(7, dev, "dev->flags0 = 0x%2x\n", dev->flags0);
> - DEBUGP(7, dev, "smartcard present: %s\n",
> - dev->flags0 & 1 ? "yes" : "no");
> - DEBUGP(7, dev, "cardman present: %s\n",
> - dev->flags0 == 0xff ? "no" : "yes");
> -
> - if ((dev->flags0 & 1) == 0 /* no smartcard inserted */
> - || dev->flags0 == 0xff) { /* no cardman inserted */
> - /* no */
> - dev->rlen =
> - dev->rpos =
> - dev->atr_csum = dev->atr_len_retry = dev->cwarn = 0;
> - dev->mstate = M_FETCH_ATR;
> -
> - dev->flags &= 0x000000ff; /* only keep IO and MONITOR locks */
> -
> - if (dev->flags0 == 0xff) {
> - DEBUGP(4, dev, "set IS_CMM_ABSENT bit\n");
> - set_bit(IS_CMM_ABSENT, &dev->flags);
> - } else if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
> - DEBUGP(4, dev, "clear IS_CMM_ABSENT bit "
> - "(card is removed)\n");
> - clear_bit(IS_CMM_ABSENT, &dev->flags);
> - }
> -
> - goto release_io;
> - } else if ((dev->flags0 & 1) && test_bit(IS_CMM_ABSENT, &dev->flags)) {
> - /* cardman and card present but cardman was absent before
> - * (after suspend with inserted card) */
> - DEBUGP(4, dev, "clear IS_CMM_ABSENT bit (card is inserted)\n");
> - clear_bit(IS_CMM_ABSENT, &dev->flags);
> - }
> -
> - if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
> - DEBUGP(7, dev, "believe ATR is already valid (do nothing)\n");
> - goto release_io;
> - }
> -
> - switch (dev->mstate) {
> - case M_CARDOFF: {
> - unsigned char flags0;
> -
> - DEBUGP(4, dev, "M_CARDOFF\n");
> - flags0 = inb(REG_FLAGS0(iobase));
> - if (flags0 & 0x02) {
> - /* wait until Flags0 indicate power is off */
> - dev->mdelay = T_10MSEC;
> - } else {
> - /* Flags0 indicate power off and no card inserted now;
> - * Reset CARDMAN CONTROLLER */
> - xoutb(0x80, REG_FLAGS0(iobase));
> -
> - /* prepare for fetching ATR again: after card off ATR
> - * is read again automatically */
> - dev->rlen =
> - dev->rpos =
> - dev->atr_csum =
> - dev->atr_len_retry = dev->cwarn = 0;
> - dev->mstate = M_FETCH_ATR;
> -
> - /* minimal gap between CARDOFF and read ATR is 50msec */
> - dev->mdelay = T_50MSEC;
> - }
> - break;
> - }
> - case M_FETCH_ATR:
> - DEBUGP(4, dev, "M_FETCH_ATR\n");
> - xoutb(0x80, REG_FLAGS0(iobase));
> - DEBUGP(4, dev, "Reset BAUDV to 9600\n");
> - dev->baudv = 0x173; /* 9600 */
> - xoutb(0x02, REG_STOPBITS(iobase)); /* stopbits=2 */
> - xoutb(0x73, REG_BAUDRATE(iobase)); /* baud value */
> - xoutb(0x21, REG_FLAGS1(iobase)); /* T_Active=1, baud
> - value */
> - /* warm start vs. power on: */
> - xoutb(dev->flags0 & 2 ? 0x46 : 0x44, REG_FLAGS0(iobase));
> - dev->mdelay = T_40MSEC;
> - dev->mstate = M_TIMEOUT_WAIT;
> - break;
> - case M_TIMEOUT_WAIT:
> - DEBUGP(4, dev, "M_TIMEOUT_WAIT\n");
> - /* numRecBytes */
> - io_read_num_rec_bytes(iobase, &dev->atr_len);
> - dev->mdelay = T_10MSEC;
> - dev->mstate = M_READ_ATR_LEN;
> - break;
> - case M_READ_ATR_LEN:
> - DEBUGP(4, dev, "M_READ_ATR_LEN\n");
> - /* infinite loop possible, since there is no timeout */
> -
> -#define MAX_ATR_LEN_RETRY 100
> -
> - if (dev->atr_len == io_read_num_rec_bytes(iobase, &s)) {
> - if (dev->atr_len_retry++ >= MAX_ATR_LEN_RETRY) { /* + XX msec */
> - dev->mdelay = T_10MSEC;
> - dev->mstate = M_READ_ATR;
> - }
> - } else {
> - dev->atr_len = s;
> - dev->atr_len_retry = 0; /* set new timeout */
> - }
> -
> - DEBUGP(4, dev, "Current ATR_LEN = %i\n", dev->atr_len);
> - break;
> - case M_READ_ATR:
> - DEBUGP(4, dev, "M_READ_ATR\n");
> - xoutb(0x80, REG_FLAGS0(iobase)); /* reset SM */
> - for (i = 0; i < dev->atr_len; i++) {
> - xoutb(i, REG_BUF_ADDR(iobase));
> - dev->atr[i] = inb(REG_BUF_DATA(iobase));
> - }
> - /* Deactivate T_Active flags */
> - DEBUGP(4, dev, "Deactivate T_Active flags\n");
> - dev->flags1 = 0x01;
> - xoutb(dev->flags1, REG_FLAGS1(iobase));
> -
> - /* atr is present (which doesn't mean it's valid) */
> - set_bit(IS_ATR_PRESENT, &dev->flags);
> - if (dev->atr[0] == 0x03)
> - str_invert_revert(dev->atr, dev->atr_len);
> - atrc = parse_atr(dev);
> - if (atrc == 0) { /* atr invalid */
> - dev->mdelay = 0;
> - dev->mstate = M_BAD_CARD;
> - } else {
> - dev->mdelay = T_50MSEC;
> - dev->mstate = M_ATR_PRESENT;
> - set_bit(IS_ATR_VALID, &dev->flags);
> - }
> -
> - if (test_bit(IS_ATR_VALID, &dev->flags) == 1) {
> - DEBUGP(4, dev, "monitor_card: ATR valid\n");
> - /* if ta1 == 0x11, no PPS necessary (default values) */
> - /* do not do PPS with multi protocol cards */
> - if ((test_bit(IS_AUTOPPS_ACT, &dev->flags) == 0) &&
> - (dev->ta1 != 0x11) &&
> - !(test_bit(IS_ANY_T0, &dev->flags) &&
> - test_bit(IS_ANY_T1, &dev->flags))) {
> - DEBUGP(4, dev, "Perform AUTOPPS\n");
> - set_bit(IS_AUTOPPS_ACT, &dev->flags);
> - ptsreq.protocol = (0x01 << dev->proto);
> - ptsreq.flags = 0x01;
> - ptsreq.pts1 = 0x00;
> - ptsreq.pts2 = 0x00;
> - ptsreq.pts3 = 0x00;
> - if (set_protocol(dev, &ptsreq) == 0) {
> - DEBUGP(4, dev, "AUTOPPS ret SUCC\n");
> - clear_bit(IS_AUTOPPS_ACT, &dev->flags);
> - wake_up_interruptible(&dev->atrq);
> - } else {
> - DEBUGP(4, dev, "AUTOPPS failed: "
> - "repower using defaults\n");
> - /* prepare for repowering */
> - clear_bit(IS_ATR_PRESENT, &dev->flags);
> - clear_bit(IS_ATR_VALID, &dev->flags);
> - dev->rlen =
> - dev->rpos =
> - dev->atr_csum =
> - dev->atr_len_retry = dev->cwarn = 0;
> - dev->mstate = M_FETCH_ATR;
> -
> - dev->mdelay = T_50MSEC;
> - }
> - } else {
> - /* for cards which use slightly different
> - * params (extra guard time) */
> - set_cardparameter(dev);
> - if (test_bit(IS_AUTOPPS_ACT, &dev->flags) == 1)
> - DEBUGP(4, dev, "AUTOPPS already active "
> - "2nd try:use default values\n");
> - if (dev->ta1 == 0x11)
> - DEBUGP(4, dev, "No AUTOPPS necessary "
> - "TA(1)==0x11\n");
> - if (test_bit(IS_ANY_T0, &dev->flags)
> - && test_bit(IS_ANY_T1, &dev->flags))
> - DEBUGP(4, dev, "Do NOT perform AUTOPPS "
> - "with multiprotocol cards\n");
> - clear_bit(IS_AUTOPPS_ACT, &dev->flags);
> - wake_up_interruptible(&dev->atrq);
> - }
> - } else {
> - DEBUGP(4, dev, "ATR invalid\n");
> - wake_up_interruptible(&dev->atrq);
> - }
> - break;
> - case M_BAD_CARD:
> - DEBUGP(4, dev, "M_BAD_CARD\n");
> - /* slow down warning, but prompt immediately after insertion */
> - if (dev->cwarn == 0 || dev->cwarn == 10) {
> - set_bit(IS_BAD_CARD, &dev->flags);
> - dev_warn(&dev->p_dev->dev, MODULE_NAME ": ");
> - if (test_bit(IS_BAD_CSUM, &dev->flags)) {
> - DEBUGP(4, dev, "ATR checksum (0x%.2x, should "
> - "be zero) failed\n", dev->atr_csum);
> - }
> -#ifdef CM4000_DEBUG
> - else if (test_bit(IS_BAD_LENGTH, &dev->flags)) {
> - DEBUGP(4, dev, "ATR length error\n");
> - } else {
> - DEBUGP(4, dev, "card damaged or wrong way "
> - "inserted\n");
> - }
> -#endif
> - dev->cwarn = 0;
> - wake_up_interruptible(&dev->atrq); /* wake open */
> - }
> - dev->cwarn++;
> - dev->mdelay = T_100MSEC;
> - dev->mstate = M_FETCH_ATR;
> - break;
> - default:
> - DEBUGP(7, dev, "Unknown action\n");
> - break; /* nothing */
> - }
> -
> -release_io:
> - DEBUGP(7, dev, "release_io\n");
> - clear_bit(LOCK_IO, &dev->flags);
> - wake_up_interruptible(&dev->ioq); /* whoever needs IO */
> -
> -return_with_timer:
> - DEBUGP(7, dev, "<- monitor_card (returns with timer)\n");
> - mod_timer(&dev->timer, jiffies + dev->mdelay);
> - clear_bit(LOCK_MONITOR, &dev->flags);
> -}
> -
> -/* Interface to userland (file_operations) */
> -
> -static ssize_t cmm_read(struct file *filp, __user char *buf, size_t count,
> - loff_t *ppos)
> -{
> - struct cm4000_dev *dev = filp->private_data;
> - unsigned int iobase = dev->p_dev->resource[0]->start;
> - ssize_t rc;
> - int i, j, k;
> -
> - DEBUGP(2, dev, "-> cmm_read(%s,%d)\n", current->comm, current->pid);
> -
> - if (count == 0) /* according to manpage */
> - return 0;
> -
> - if (!pcmcia_dev_present(dev->p_dev) || /* device removed */
> - test_bit(IS_CMM_ABSENT, &dev->flags))
> - return -ENODEV;
> -
> - if (test_bit(IS_BAD_CSUM, &dev->flags))
> - return -EIO;
> -
> - /* also see the note about this in cmm_write */
> - if (wait_event_interruptible
> - (dev->atrq,
> - ((filp->f_flags & O_NONBLOCK)
> - || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
> - if (filp->f_flags & O_NONBLOCK)
> - return -EAGAIN;
> - return -ERESTARTSYS;
> - }
> -
> - if (test_bit(IS_ATR_VALID, &dev->flags) == 0)
> - return -EIO;
> -
> - /* this one implements blocking IO */
> - if (wait_event_interruptible
> - (dev->readq,
> - ((filp->f_flags & O_NONBLOCK) || (dev->rpos < dev->rlen)))) {
> - if (filp->f_flags & O_NONBLOCK)
> - return -EAGAIN;
> - return -ERESTARTSYS;
> - }
> -
> - /* lock io */
> - if (wait_event_interruptible
> - (dev->ioq,
> - ((filp->f_flags & O_NONBLOCK)
> - || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
> - if (filp->f_flags & O_NONBLOCK)
> - return -EAGAIN;
> - return -ERESTARTSYS;
> - }
> -
> - rc = 0;
> - dev->flags0 = inb(REG_FLAGS0(iobase));
> - if ((dev->flags0 & 1) == 0 /* no smartcard inserted */
> - || dev->flags0 == 0xff) { /* no cardman inserted */
> - clear_bit(IS_ATR_VALID, &dev->flags);
> - if (dev->flags0 & 1) {
> - set_bit(IS_CMM_ABSENT, &dev->flags);
> - rc = -ENODEV;
> - } else {
> - rc = -EIO;
> - }
> - goto release_io;
> - }
> -
> - DEBUGP(4, dev, "begin read answer\n");
> - j = min(count, (size_t)(dev->rlen - dev->rpos));
> - k = dev->rpos;
> - if (k + j > 255)
> - j = 256 - k;
> - DEBUGP(4, dev, "read1 j=%d\n", j);
> - for (i = 0; i < j; i++) {
> - xoutb(k++, REG_BUF_ADDR(iobase));
> - dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
> - }
> - j = min(count, (size_t)(dev->rlen - dev->rpos));
> - if (k + j > 255) {
> - DEBUGP(4, dev, "read2 j=%d\n", j);
> - dev->flags1 |= 0x10; /* MSB buf addr set */
> - xoutb(dev->flags1, REG_FLAGS1(iobase));
> - for (; i < j; i++) {
> - xoutb(k++, REG_BUF_ADDR(iobase));
> - dev->rbuf[i] = xinb(REG_BUF_DATA(iobase));
> - }
> - }
> -
> - if (dev->proto == 0 && count > dev->rlen - dev->rpos && i) {
> - DEBUGP(4, dev, "T=0 and count > buffer\n");
> - dev->rbuf[i] = dev->rbuf[i - 1];
> - dev->rbuf[i - 1] = dev->procbyte;
> - j++;
> - }
> - count = j;
> -
> - dev->rpos = dev->rlen + 1;
> -
> - /* Clear T1Active */
> - DEBUGP(4, dev, "Clear T1Active\n");
> - dev->flags1 &= 0xdf;
> - xoutb(dev->flags1, REG_FLAGS1(iobase));
> -
> - xoutb(0, REG_FLAGS1(iobase)); /* clear detectCMM */
> - /* last check before exit */
> - if (!io_detect_cm4000(iobase, dev)) {
> - rc = -ENODEV;
> - goto release_io;
> - }
> -
> - if (test_bit(IS_INVREV, &dev->flags) && count > 0)
> - str_invert_revert(dev->rbuf, count);
> -
> - if (copy_to_user(buf, dev->rbuf, count))
> - rc = -EFAULT;
> -
> -release_io:
> - clear_bit(LOCK_IO, &dev->flags);
> - wake_up_interruptible(&dev->ioq);
> -
> - DEBUGP(2, dev, "<- cmm_read returns: rc = %zi\n",
> - (rc < 0 ? rc : count));
> - return rc < 0 ? rc : count;
> -}
> -
> -static ssize_t cmm_write(struct file *filp, const char __user *buf,
> - size_t count, loff_t *ppos)
> -{
> - struct cm4000_dev *dev = filp->private_data;
> - unsigned int iobase = dev->p_dev->resource[0]->start;
> - unsigned short s;
> - unsigned char infolen;
> - unsigned char sendT0;
> - unsigned short nsend;
> - unsigned short nr;
> - ssize_t rc;
> - int i;
> -
> - DEBUGP(2, dev, "-> cmm_write(%s,%d)\n", current->comm, current->pid);
> -
> - if (count == 0) /* according to manpage */
> - return 0;
> -
> - if (dev->proto == 0 && count < 4) {
> - /* T0 must have at least 4 bytes */
> - DEBUGP(4, dev, "T0 short write\n");
> - return -EIO;
> - }
> -
> - nr = count & 0x1ff; /* max bytes to write */
> -
> - sendT0 = dev->proto ? 0 : nr > 5 ? 0x08 : 0;
> -
> - if (!pcmcia_dev_present(dev->p_dev) || /* device removed */
> - test_bit(IS_CMM_ABSENT, &dev->flags))
> - return -ENODEV;
> -
> - if (test_bit(IS_BAD_CSUM, &dev->flags)) {
> - DEBUGP(4, dev, "bad csum\n");
> - return -EIO;
> - }
> -
> - /*
> - * wait for atr to become valid.
> - * note: it is important to lock this code. if we dont, the monitor
> - * could be run between test_bit and the call to sleep on the
> - * atr-queue. if *then* the monitor detects atr valid, it will wake up
> - * any process on the atr-queue, *but* since we have been interrupted,
> - * we do not yet sleep on this queue. this would result in a missed
> - * wake_up and the calling process would sleep forever (until
> - * interrupted). also, do *not* restore_flags before sleep_on, because
> - * this could result in the same situation!
> - */
> - if (wait_event_interruptible
> - (dev->atrq,
> - ((filp->f_flags & O_NONBLOCK)
> - || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags) != 0)))) {
> - if (filp->f_flags & O_NONBLOCK)
> - return -EAGAIN;
> - return -ERESTARTSYS;
> - }
> -
> - if (test_bit(IS_ATR_VALID, &dev->flags) == 0) { /* invalid atr */
> - DEBUGP(4, dev, "invalid ATR\n");
> - return -EIO;
> - }
> -
> - /* lock io */
> - if (wait_event_interruptible
> - (dev->ioq,
> - ((filp->f_flags & O_NONBLOCK)
> - || (test_and_set_bit(LOCK_IO, (void *)&dev->flags) == 0)))) {
> - if (filp->f_flags & O_NONBLOCK)
> - return -EAGAIN;
> - return -ERESTARTSYS;
> - }
> -
> - if (copy_from_user(dev->sbuf, buf, ((count > 512) ? 512 : count)))
> - return -EFAULT;
> -
> - rc = 0;
> - dev->flags0 = inb(REG_FLAGS0(iobase));
> - if ((dev->flags0 & 1) == 0 /* no smartcard inserted */
> - || dev->flags0 == 0xff) { /* no cardman inserted */
> - clear_bit(IS_ATR_VALID, &dev->flags);
> - if (dev->flags0 & 1) {
> - set_bit(IS_CMM_ABSENT, &dev->flags);
> - rc = -ENODEV;
> - } else {
> - DEBUGP(4, dev, "IO error\n");
> - rc = -EIO;
> - }
> - goto release_io;
> - }
> -
> - xoutb(0x80, REG_FLAGS0(iobase)); /* reset SM */
> -
> - if (!io_detect_cm4000(iobase, dev)) {
> - rc = -ENODEV;
> - goto release_io;
> - }
> -
> - /* reflect T=0 send/read mode in flags1 */
> - dev->flags1 |= (sendT0);
> -
> - set_cardparameter(dev);
> -
> - /* dummy read, reset flag procedure received */
> - inb(REG_FLAGS1(iobase));
> -
> - dev->flags1 = 0x20 /* T_Active */
> - | (sendT0)
> - | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)/* inverse parity */
> - | (((dev->baudv - 1) & 0x0100) >> 8); /* MSB-Baud */
> - DEBUGP(1, dev, "set dev->flags1 = 0x%.2x\n", dev->flags1);
> - xoutb(dev->flags1, REG_FLAGS1(iobase));
> -
> - /* xmit data */
> - DEBUGP(4, dev, "Xmit data\n");
> - for (i = 0; i < nr; i++) {
> - if (i >= 256) {
> - dev->flags1 = 0x20 /* T_Active */
> - | (sendT0) /* SendT0 */
> - /* inverse parity: */
> - | (test_bit(IS_INVREV, &dev->flags) ? 2 : 0)
> - | (((dev->baudv - 1) & 0x0100) >> 8) /* MSB-Baud */
> - | 0x10; /* set address high */
> - DEBUGP(4, dev, "dev->flags = 0x%.2x - set address "
> - "high\n", dev->flags1);
> - xoutb(dev->flags1, REG_FLAGS1(iobase));
> - }
> - if (test_bit(IS_INVREV, &dev->flags)) {
> - DEBUGP(4, dev, "Apply inverse convention for 0x%.2x "
> - "-> 0x%.2x\n", (unsigned char)dev->sbuf[i],
> - invert_revert(dev->sbuf[i]));
> - xoutb(i, REG_BUF_ADDR(iobase));
> - xoutb(invert_revert(dev->sbuf[i]),
> - REG_BUF_DATA(iobase));
> - } else {
> - xoutb(i, REG_BUF_ADDR(iobase));
> - xoutb(dev->sbuf[i], REG_BUF_DATA(iobase));
> - }
> - }
> - DEBUGP(4, dev, "Xmit done\n");
> -
> - if (dev->proto == 0) {
> - /* T=0 proto: 0 byte reply */
> - if (nr == 4) {
> - DEBUGP(4, dev, "T=0 assumes 0 byte reply\n");
> - xoutb(i, REG_BUF_ADDR(iobase));
> - if (test_bit(IS_INVREV, &dev->flags))
> - xoutb(0xff, REG_BUF_DATA(iobase));
> - else
> - xoutb(0x00, REG_BUF_DATA(iobase));
> - }
> -
> - /* numSendBytes */
> - if (sendT0)
> - nsend = nr;
> - else {
> - if (nr == 4)
> - nsend = 5;
> - else {
> - nsend = 5 + (unsigned char)dev->sbuf[4];
> - if (dev->sbuf[4] == 0)
> - nsend += 0x100;
> - }
> - }
> - } else
> - nsend = nr;
> -
> - /* T0: output procedure byte */
> - if (test_bit(IS_INVREV, &dev->flags)) {
> - DEBUGP(4, dev, "T=0 set Procedure byte (inverse-reverse) "
> - "0x%.2x\n", invert_revert(dev->sbuf[1]));
> - xoutb(invert_revert(dev->sbuf[1]), REG_NUM_BYTES(iobase));
> - } else {
> - DEBUGP(4, dev, "T=0 set Procedure byte 0x%.2x\n", dev->sbuf[1]);
> - xoutb(dev->sbuf[1], REG_NUM_BYTES(iobase));
> - }
> -
> - DEBUGP(1, dev, "set NumSendBytes = 0x%.2x\n",
> - (unsigned char)(nsend & 0xff));
> - xoutb((unsigned char)(nsend & 0xff), REG_NUM_SEND(iobase));
> -
> - DEBUGP(1, dev, "Trigger CARDMAN CONTROLLER (0x%.2x)\n",
> - 0x40 /* SM_Active */
> - | (dev->flags0 & 2 ? 0 : 4) /* power on if needed */
> - |(dev->proto ? 0x10 : 0x08) /* T=1/T=0 */
> - |(nsend & 0x100) >> 8 /* MSB numSendBytes */ );
> - xoutb(0x40 /* SM_Active */
> - | (dev->flags0 & 2 ? 0 : 4) /* power on if needed */
> - |(dev->proto ? 0x10 : 0x08) /* T=1/T=0 */
> - |(nsend & 0x100) >> 8, /* MSB numSendBytes */
> - REG_FLAGS0(iobase));
> -
> - /* wait for xmit done */
> - if (dev->proto == 1) {
> - DEBUGP(4, dev, "Wait for xmit done\n");
> - for (i = 0; i < 1000; i++) {
> - if (inb(REG_FLAGS0(iobase)) & 0x08)
> - break;
> - msleep_interruptible(10);
> - }
> - if (i == 1000) {
> - DEBUGP(4, dev, "timeout waiting for xmit done\n");
> - rc = -EIO;
> - goto release_io;
> - }
> - }
> -
> - /* T=1: wait for infoLen */
> -
> - infolen = 0;
> - if (dev->proto) {
> - /* wait until infoLen is valid */
> - for (i = 0; i < 6000; i++) { /* max waiting time of 1 min */
> - io_read_num_rec_bytes(iobase, &s);
> - if (s >= 3) {
> - infolen = inb(REG_FLAGS1(iobase));
> - DEBUGP(4, dev, "infolen=%d\n", infolen);
> - break;
> - }
> - msleep_interruptible(10);
> - }
> - if (i == 6000) {
> - DEBUGP(4, dev, "timeout waiting for infoLen\n");
> - rc = -EIO;
> - goto release_io;
> - }
> - } else
> - clear_bit(IS_PROCBYTE_PRESENT, &dev->flags);
> -
> - /* numRecBytes | bit9 of numRecytes */
> - io_read_num_rec_bytes(iobase, &dev->rlen);
> - for (i = 0; i < 600; i++) { /* max waiting time of 2 sec */
> - if (dev->proto) {
> - if (dev->rlen >= infolen + 4)
> - break;
> - }
> - msleep_interruptible(10);
> - /* numRecBytes | bit9 of numRecytes */
> - io_read_num_rec_bytes(iobase, &s);
> - if (s > dev->rlen) {
> - DEBUGP(1, dev, "NumRecBytes inc (reset timeout)\n");
> - i = 0; /* reset timeout */
> - dev->rlen = s;
> - }
> - /* T=0: we are done when numRecBytes doesn't
> - * increment any more and NoProcedureByte
> - * is set and numRecBytes == bytes sent + 6
> - * (header bytes + data + 1 for sw2)
> - * except when the card replies an error
> - * which means, no data will be sent back.
> - */
> - else if (dev->proto == 0) {
> - if ((inb(REG_BUF_ADDR(iobase)) & 0x80)) {
> - /* no procedure byte received since last read */
> - DEBUGP(1, dev, "NoProcedure byte set\n");
> - /* i=0; */
> - } else {
> - /* procedure byte received since last read */
> - DEBUGP(1, dev, "NoProcedure byte unset "
> - "(reset timeout)\n");
> - dev->procbyte = inb(REG_FLAGS1(iobase));
> - DEBUGP(1, dev, "Read procedure byte 0x%.2x\n",
> - dev->procbyte);
> - i = 0; /* resettimeout */
> - }
> - if (inb(REG_FLAGS0(iobase)) & 0x08) {
> - DEBUGP(1, dev, "T0Done flag (read reply)\n");
> - break;
> - }
> - }
> - if (dev->proto)
> - infolen = inb(REG_FLAGS1(iobase));
> - }
> - if (i == 600) {
> - DEBUGP(1, dev, "timeout waiting for numRecBytes\n");
> - rc = -EIO;
> - goto release_io;
> - } else {
> - if (dev->proto == 0) {
> - DEBUGP(1, dev, "Wait for T0Done bit to be set\n");
> - for (i = 0; i < 1000; i++) {
> - if (inb(REG_FLAGS0(iobase)) & 0x08)
> - break;
> - msleep_interruptible(10);
> - }
> - if (i == 1000) {
> - DEBUGP(1, dev, "timeout waiting for T0Done\n");
> - rc = -EIO;
> - goto release_io;
> - }
> -
> - dev->procbyte = inb(REG_FLAGS1(iobase));
> - DEBUGP(4, dev, "Read procedure byte 0x%.2x\n",
> - dev->procbyte);
> -
> - io_read_num_rec_bytes(iobase, &dev->rlen);
> - DEBUGP(4, dev, "Read NumRecBytes = %i\n", dev->rlen);
> -
> - }
> - }
> - /* T=1: read offset=zero, T=0: read offset=after challenge */
> - dev->rpos = dev->proto ? 0 : nr == 4 ? 5 : nr > dev->rlen ? 5 : nr;
> - DEBUGP(4, dev, "dev->rlen = %i, dev->rpos = %i, nr = %i\n",
> - dev->rlen, dev->rpos, nr);
> -
> -release_io:
> - DEBUGP(4, dev, "Reset SM\n");
> - xoutb(0x80, REG_FLAGS0(iobase)); /* reset SM */
> -
> - if (rc < 0) {
> - DEBUGP(4, dev, "Write failed but clear T_Active\n");
> - dev->flags1 &= 0xdf;
> - xoutb(dev->flags1, REG_FLAGS1(iobase));
> - }
> -
> - clear_bit(LOCK_IO, &dev->flags);
> - wake_up_interruptible(&dev->ioq);
> - wake_up_interruptible(&dev->readq); /* tell read we have data */
> -
> - /* ITSEC E2: clear write buffer */
> - memset((char *)dev->sbuf, 0, 512);
> -
> - /* return error or actually written bytes */
> - DEBUGP(2, dev, "<- cmm_write\n");
> - return rc < 0 ? rc : nr;
> -}
> -
> -static void start_monitor(struct cm4000_dev *dev)
> -{
> - DEBUGP(3, dev, "-> start_monitor\n");
> - if (!dev->monitor_running) {
> - DEBUGP(5, dev, "create, init and add timer\n");
> - timer_setup(&dev->timer, monitor_card, 0);
> - dev->monitor_running = 1;
> - mod_timer(&dev->timer, jiffies);
> - } else
> - DEBUGP(5, dev, "monitor already running\n");
> - DEBUGP(3, dev, "<- start_monitor\n");
> -}
> -
> -static void stop_monitor(struct cm4000_dev *dev)
> -{
> - DEBUGP(3, dev, "-> stop_monitor\n");
> - if (dev->monitor_running) {
> - DEBUGP(5, dev, "stopping monitor\n");
> - terminate_monitor(dev);
> - /* reset monitor SM */
> - clear_bit(IS_ATR_VALID, &dev->flags);
> - clear_bit(IS_ATR_PRESENT, &dev->flags);
> - } else
> - DEBUGP(5, dev, "monitor already stopped\n");
> - DEBUGP(3, dev, "<- stop_monitor\n");
> -}
> -
> -static long cmm_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
> -{
> - struct cm4000_dev *dev = filp->private_data;
> - unsigned int iobase = dev->p_dev->resource[0]->start;
> - struct inode *inode = file_inode(filp);
> - struct pcmcia_device *link;
> - int rc;
> - void __user *argp = (void __user *)arg;
> -#ifdef CM4000_DEBUG
> - char *ioctl_names[CM_IOC_MAXNR + 1] = {
> - [_IOC_NR(CM_IOCGSTATUS)] "CM_IOCGSTATUS",
> - [_IOC_NR(CM_IOCGATR)] "CM_IOCGATR",
> - [_IOC_NR(CM_IOCARDOFF)] "CM_IOCARDOFF",
> - [_IOC_NR(CM_IOCSPTS)] "CM_IOCSPTS",
> - [_IOC_NR(CM_IOSDBGLVL)] "CM4000_DBGLVL",
> - };
> - DEBUGP(3, dev, "cmm_ioctl(device=%d.%d) %s\n", imajor(inode),
> - iminor(inode), ioctl_names[_IOC_NR(cmd)]);
> -#endif
> -
> - mutex_lock(&cmm_mutex);
> - rc = -ENODEV;
> - link = dev_table[iminor(inode)];
> - if (!pcmcia_dev_present(link)) {
> - DEBUGP(4, dev, "DEV_OK false\n");
> - goto out;
> - }
> -
> - if (test_bit(IS_CMM_ABSENT, &dev->flags)) {
> - DEBUGP(4, dev, "CMM_ABSENT flag set\n");
> - goto out;
> - }
> - rc = -EINVAL;
> -
> - if (_IOC_TYPE(cmd) != CM_IOC_MAGIC) {
> - DEBUGP(4, dev, "ioctype mismatch\n");
> - goto out;
> - }
> - if (_IOC_NR(cmd) > CM_IOC_MAXNR) {
> - DEBUGP(4, dev, "iocnr mismatch\n");
> - goto out;
> - }
> - rc = 0;
> -
> - switch (cmd) {
> - case CM_IOCGSTATUS:
> - DEBUGP(4, dev, " ... in CM_IOCGSTATUS\n");
> - {
> - int status;
> -
> - /* clear other bits, but leave inserted & powered as
> - * they are */
> - status = dev->flags0 & 3;
> - if (test_bit(IS_ATR_PRESENT, &dev->flags))
> - status |= CM_ATR_PRESENT;
> - if (test_bit(IS_ATR_VALID, &dev->flags))
> - status |= CM_ATR_VALID;
> - if (test_bit(IS_CMM_ABSENT, &dev->flags))
> - status |= CM_NO_READER;
> - if (test_bit(IS_BAD_CARD, &dev->flags))
> - status |= CM_BAD_CARD;
> - if (copy_to_user(argp, &status, sizeof(int)))
> - rc = -EFAULT;
> - }
> - break;
> - case CM_IOCGATR:
> - DEBUGP(4, dev, "... in CM_IOCGATR\n");
> - {
> - struct atreq __user *atreq = argp;
> - int tmp;
> - /* allow nonblocking io and being interrupted */
> - if (wait_event_interruptible
> - (dev->atrq,
> - ((filp->f_flags & O_NONBLOCK)
> - || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
> - != 0)))) {
> - if (filp->f_flags & O_NONBLOCK)
> - rc = -EAGAIN;
> - else
> - rc = -ERESTARTSYS;
> - break;
> - }
> -
> - rc = -EFAULT;
> - if (test_bit(IS_ATR_VALID, &dev->flags) == 0) {
> - tmp = -1;
> - if (copy_to_user(&(atreq->atr_len), &tmp,
> - sizeof(int)))
> - break;
> - } else {
> - if (copy_to_user(atreq->atr, dev->atr,
> - dev->atr_len))
> - break;
> -
> - tmp = dev->atr_len;
> - if (copy_to_user(&(atreq->atr_len), &tmp, sizeof(int)))
> - break;
> - }
> - rc = 0;
> - break;
> - }
> - case CM_IOCARDOFF:
> -
> -#ifdef CM4000_DEBUG
> - DEBUGP(4, dev, "... in CM_IOCARDOFF\n");
> - if (dev->flags0 & 0x01) {
> - DEBUGP(4, dev, " Card inserted\n");
> - } else {
> - DEBUGP(2, dev, " No card inserted\n");
> - }
> - if (dev->flags0 & 0x02) {
> - DEBUGP(4, dev, " Card powered\n");
> - } else {
> - DEBUGP(2, dev, " Card not powered\n");
> - }
> -#endif
> -
> - /* is a card inserted and powered? */
> - if ((dev->flags0 & 0x01) && (dev->flags0 & 0x02)) {
> -
> - /* get IO lock */
> - if (wait_event_interruptible
> - (dev->ioq,
> - ((filp->f_flags & O_NONBLOCK)
> - || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
> - == 0)))) {
> - if (filp->f_flags & O_NONBLOCK)
> - rc = -EAGAIN;
> - else
> - rc = -ERESTARTSYS;
> - break;
> - }
> - /* Set Flags0 = 0x42 */
> - DEBUGP(4, dev, "Set Flags0=0x42 \n");
> - xoutb(0x42, REG_FLAGS0(iobase));
> - clear_bit(IS_ATR_PRESENT, &dev->flags);
> - clear_bit(IS_ATR_VALID, &dev->flags);
> - dev->mstate = M_CARDOFF;
> - clear_bit(LOCK_IO, &dev->flags);
> - if (wait_event_interruptible
> - (dev->atrq,
> - ((filp->f_flags & O_NONBLOCK)
> - || (test_bit(IS_ATR_VALID, (void *)&dev->flags) !=
> - 0)))) {
> - if (filp->f_flags & O_NONBLOCK)
> - rc = -EAGAIN;
> - else
> - rc = -ERESTARTSYS;
> - break;
> - }
> - }
> - /* release lock */
> - clear_bit(LOCK_IO, &dev->flags);
> - wake_up_interruptible(&dev->ioq);
> -
> - rc = 0;
> - break;
> - case CM_IOCSPTS:
> - {
> - struct ptsreq krnptsreq;
> -
> - if (copy_from_user(&krnptsreq, argp,
> - sizeof(struct ptsreq))) {
> - rc = -EFAULT;
> - break;
> - }
> -
> - rc = 0;
> - DEBUGP(4, dev, "... in CM_IOCSPTS\n");
> - /* wait for ATR to get valid */
> - if (wait_event_interruptible
> - (dev->atrq,
> - ((filp->f_flags & O_NONBLOCK)
> - || (test_bit(IS_ATR_PRESENT, (void *)&dev->flags)
> - != 0)))) {
> - if (filp->f_flags & O_NONBLOCK)
> - rc = -EAGAIN;
> - else
> - rc = -ERESTARTSYS;
> - break;
> - }
> - /* get IO lock */
> - if (wait_event_interruptible
> - (dev->ioq,
> - ((filp->f_flags & O_NONBLOCK)
> - || (test_and_set_bit(LOCK_IO, (void *)&dev->flags)
> - == 0)))) {
> - if (filp->f_flags & O_NONBLOCK)
> - rc = -EAGAIN;
> - else
> - rc = -ERESTARTSYS;
> - break;
> - }
> -
> - if ((rc = set_protocol(dev, &krnptsreq)) != 0) {
> - /* auto power_on again */
> - dev->mstate = M_FETCH_ATR;
> - clear_bit(IS_ATR_VALID, &dev->flags);
> - }
> - /* release lock */
> - clear_bit(LOCK_IO, &dev->flags);
> - wake_up_interruptible(&dev->ioq);
> -
> - }
> - break;
> -#ifdef CM4000_DEBUG
> - case CM_IOSDBGLVL:
> - rc = -ENOTTY;
> - break;
> -#endif
> - default:
> - DEBUGP(4, dev, "... in default (unknown IOCTL code)\n");
> - rc = -ENOTTY;
> - }
> -out:
> - mutex_unlock(&cmm_mutex);
> - return rc;
> -}
> -
> -static int cmm_open(struct inode *inode, struct file *filp)
> -{
> - struct cm4000_dev *dev;
> - struct pcmcia_device *link;
> - int minor = iminor(inode);
> - int ret;
> -
> - if (minor >= CM4000_MAX_DEV)
> - return -ENODEV;
> -
> - mutex_lock(&cmm_mutex);
> - link = dev_table[minor];
> - if (link == NULL || !pcmcia_dev_present(link)) {
> - ret = -ENODEV;
> - goto out;
> - }
> -
> - if (link->open) {
> - ret = -EBUSY;
> - goto out;
> - }
> -
> - dev = link->priv;
> - filp->private_data = dev;
> -
> - DEBUGP(2, dev, "-> cmm_open(device=%d.%d process=%s,%d)\n",
> - imajor(inode), minor, current->comm, current->pid);
> -
> - /* init device variables, they may be "polluted" after close
> - * or, the device may never have been closed (i.e. open failed)
> - */
> -
> - ZERO_DEV(dev);
> -
> - /* opening will always block since the
> - * monitor will be started by open, which
> - * means we have to wait for ATR becoming
> - * valid = block until valid (or card
> - * inserted)
> - */
> - if (filp->f_flags & O_NONBLOCK) {
> - ret = -EAGAIN;
> - goto out;
> - }
> -
> - dev->mdelay = T_50MSEC;
> -
> - /* start monitoring the cardstatus */
> - start_monitor(dev);
> -
> - link->open = 1; /* only one open per device */
> -
> - DEBUGP(2, dev, "<- cmm_open\n");
> - ret = stream_open(inode, filp);
> -out:
> - mutex_unlock(&cmm_mutex);
> - return ret;
> -}
> -
> -static int cmm_close(struct inode *inode, struct file *filp)
> -{
> - struct cm4000_dev *dev;
> - struct pcmcia_device *link;
> - int minor = iminor(inode);
> -
> - if (minor >= CM4000_MAX_DEV)
> - return -ENODEV;
> -
> - link = dev_table[minor];
> - if (link == NULL)
> - return -ENODEV;
> -
> - dev = link->priv;
> -
> - DEBUGP(2, dev, "-> cmm_close(maj/min=%d.%d)\n",
> - imajor(inode), minor);
> -
> - stop_monitor(dev);
> -
> - ZERO_DEV(dev);
> -
> - link->open = 0; /* only one open per device */
> - wake_up(&dev->devq); /* socket removed? */
> -
> - DEBUGP(2, dev, "cmm_close\n");
> - return 0;
> -}
> -
> -static void cmm_cm4000_release(struct pcmcia_device * link)
> -{
> - struct cm4000_dev *dev = link->priv;
> -
> - /* dont terminate the monitor, rather rely on
> - * close doing that for us.
> - */
> - DEBUGP(3, dev, "-> cmm_cm4000_release\n");
> - while (link->open) {
> - printk(KERN_INFO MODULE_NAME ": delaying release until "
> - "process has terminated\n");
> - /* note: don't interrupt us:
> - * close the applications which own
> - * the devices _first_ !
> - */
> - wait_event(dev->devq, (link->open == 0));
> - }
> - /* dev->devq=NULL; this cannot be zeroed earlier */
> - DEBUGP(3, dev, "<- cmm_cm4000_release\n");
> - return;
> -}
> -
> -/*==== Interface to PCMCIA Layer =======================================*/
> -
> -static int cm4000_config_check(struct pcmcia_device *p_dev, void *priv_data)
> -{
> - return pcmcia_request_io(p_dev);
> -}
> -
> -static int cm4000_config(struct pcmcia_device * link, int devno)
> -{
> - link->config_flags |= CONF_AUTO_SET_IO;
> -
> - /* read the config-tuples */
> - if (pcmcia_loop_config(link, cm4000_config_check, NULL))
> - goto cs_release;
> -
> - if (pcmcia_enable_device(link))
> - goto cs_release;
> -
> - return 0;
> -
> -cs_release:
> - cm4000_release(link);
> - return -ENODEV;
> -}
> -
> -static int cm4000_suspend(struct pcmcia_device *link)
> -{
> - struct cm4000_dev *dev;
> -
> - dev = link->priv;
> - stop_monitor(dev);
> -
> - return 0;
> -}
> -
> -static int cm4000_resume(struct pcmcia_device *link)
> -{
> - struct cm4000_dev *dev;
> -
> - dev = link->priv;
> - if (link->open)
> - start_monitor(dev);
> -
> - return 0;
> -}
> -
> -static void cm4000_release(struct pcmcia_device *link)
> -{
> - cmm_cm4000_release(link); /* delay release until device closed */
> - pcmcia_disable_device(link);
> -}
> -
> -static int cm4000_probe(struct pcmcia_device *link)
> -{
> - struct cm4000_dev *dev;
> - int i, ret;
> -
> - for (i = 0; i < CM4000_MAX_DEV; i++)
> - if (dev_table[i] == NULL)
> - break;
> -
> - if (i == CM4000_MAX_DEV) {
> - printk(KERN_NOTICE MODULE_NAME ": all devices in use\n");
> - return -ENODEV;
> - }
> -
> - /* create a new cm4000_cs device */
> - dev = kzalloc(sizeof(struct cm4000_dev), GFP_KERNEL);
> - if (dev == NULL)
> - return -ENOMEM;
> -
> - dev->p_dev = link;
> - link->priv = dev;
> - dev_table[i] = link;
> -
> - init_waitqueue_head(&dev->devq);
> - init_waitqueue_head(&dev->ioq);
> - init_waitqueue_head(&dev->atrq);
> - init_waitqueue_head(&dev->readq);
> -
> - ret = cm4000_config(link, i);
> - if (ret) {
> - dev_table[i] = NULL;
> - kfree(dev);
> - return ret;
> - }
> -
> - device_create(cmm_class, NULL, MKDEV(major, i), NULL, "cmm%d", i);
> -
> - return 0;
> -}
> -
> -static void cm4000_detach(struct pcmcia_device *link)
> -{
> - struct cm4000_dev *dev = link->priv;
> - int devno;
> -
> - /* find device */
> - for (devno = 0; devno < CM4000_MAX_DEV; devno++)
> - if (dev_table[devno] == link)
> - break;
> - if (devno == CM4000_MAX_DEV)
> - return;
> -
> - stop_monitor(dev);
> -
> - cm4000_release(link);
> -
> - dev_table[devno] = NULL;
> - kfree(dev);
> -
> - device_destroy(cmm_class, MKDEV(major, devno));
> -
> - return;
> -}
> -
> -static const struct file_operations cm4000_fops = {
> - .owner = THIS_MODULE,
> - .read = cmm_read,
> - .write = cmm_write,
> - .unlocked_ioctl = cmm_ioctl,
> - .open = cmm_open,
> - .release= cmm_close,
> - .llseek = no_llseek,
> -};
> -
> -static const struct pcmcia_device_id cm4000_ids[] = {
> - PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0002),
> - PCMCIA_DEVICE_PROD_ID12("CardMan", "4000", 0x2FB368CA, 0xA2BD8C39),
> - PCMCIA_DEVICE_NULL,
> -};
> -MODULE_DEVICE_TABLE(pcmcia, cm4000_ids);
> -
> -static struct pcmcia_driver cm4000_driver = {
> - .owner = THIS_MODULE,
> - .name = "cm4000_cs",
> - .probe = cm4000_probe,
> - .remove = cm4000_detach,
> - .suspend = cm4000_suspend,
> - .resume = cm4000_resume,
> - .id_table = cm4000_ids,
> -};
> -
> -static int __init cmm_init(void)
> -{
> - int rc;
> -
> - cmm_class = class_create(THIS_MODULE, "cardman_4000");
> - if (IS_ERR(cmm_class))
> - return PTR_ERR(cmm_class);
> -
> - major = register_chrdev(0, DEVICE_NAME, &cm4000_fops);
> - if (major < 0) {
> - printk(KERN_WARNING MODULE_NAME
> - ": could not get major number\n");
> - class_destroy(cmm_class);
> - return major;
> - }
> -
> - rc = pcmcia_register_driver(&cm4000_driver);
> - if (rc < 0) {
> - unregister_chrdev(major, DEVICE_NAME);
> - class_destroy(cmm_class);
> - return rc;
> - }
> -
> - return 0;
> -}
> -
> -static void __exit cmm_exit(void)
> -{
> - pcmcia_unregister_driver(&cm4000_driver);
> - unregister_chrdev(major, DEVICE_NAME);
> - class_destroy(cmm_class);
> -};
> -
> -module_init(cmm_init);
> -module_exit(cmm_exit);
> -MODULE_LICENSE("Dual BSD/GPL");
> diff --git a/drivers/char/pcmcia/cm4040_cs.c b/drivers/char/pcmcia/cm4040_cs.c
> deleted file mode 100644
> index 827711911da4..000000000000
> --- a/drivers/char/pcmcia/cm4040_cs.c
> +++ /dev/null
> @@ -1,684 +0,0 @@
> -/*
> - * A driver for the Omnikey PCMCIA smartcard reader CardMan 4040
> - *
> - * (c) 2000-2004 Omnikey AG (http://www.omnikey.com/)
> - *
> - * (C) 2005-2006 Harald Welte <laforge@...monks.org>
> - * - add support for poll()
> - * - driver cleanup
> - * - add waitqueues
> - * - adhere to linux kernel coding style and policies
> - * - support 2.6.13 "new style" pcmcia interface
> - * - add class interface for udev device creation
> - *
> - * The device basically is a USB CCID compliant device that has been
> - * attached to an I/O-Mapped FIFO.
> - *
> - * All rights reserved, Dual BSD/GPL Licensed.
> - */
> -
> -#include <linux/kernel.h>
> -#include <linux/module.h>
> -#include <linux/slab.h>
> -#include <linux/init.h>
> -#include <linux/fs.h>
> -#include <linux/delay.h>
> -#include <linux/poll.h>
> -#include <linux/mutex.h>
> -#include <linux/wait.h>
> -#include <linux/uaccess.h>
> -#include <asm/io.h>
> -
> -#include <pcmcia/cistpl.h>
> -#include <pcmcia/cisreg.h>
> -#include <pcmcia/ciscode.h>
> -#include <pcmcia/ds.h>
> -
> -#include "cm4040_cs.h"
> -
> -
> -#define reader_to_dev(x) (&x->p_dev->dev)
> -
> -/* n (debug level) is ignored */
> -/* additional debug output may be enabled by re-compiling with
> - * CM4040_DEBUG set */
> -/* #define CM4040_DEBUG */
> -#define DEBUGP(n, rdr, x, args...) do { \
> - dev_dbg(reader_to_dev(rdr), "%s:" x, \
> - __func__ , ## args); \
> - } while (0)
> -
> -static DEFINE_MUTEX(cm4040_mutex);
> -
> -#define CCID_DRIVER_BULK_DEFAULT_TIMEOUT (150*HZ)
> -#define CCID_DRIVER_ASYNC_POWERUP_TIMEOUT (35*HZ)
> -#define CCID_DRIVER_MINIMUM_TIMEOUT (3*HZ)
> -#define READ_WRITE_BUFFER_SIZE 512
> -#define POLL_LOOP_COUNT 1000
> -
> -/* how often to poll for fifo status change */
> -#define POLL_PERIOD msecs_to_jiffies(10)
> -
> -static void reader_release(struct pcmcia_device *link);
> -
> -static int major;
> -static struct class *cmx_class;
> -
> -#define BS_READABLE 0x01
> -#define BS_WRITABLE 0x02
> -
> -struct reader_dev {
> - struct pcmcia_device *p_dev;
> - wait_queue_head_t devq;
> - wait_queue_head_t poll_wait;
> - wait_queue_head_t read_wait;
> - wait_queue_head_t write_wait;
> - unsigned long buffer_status;
> - unsigned long timeout;
> - unsigned char s_buf[READ_WRITE_BUFFER_SIZE];
> - unsigned char r_buf[READ_WRITE_BUFFER_SIZE];
> - struct timer_list poll_timer;
> -};
> -
> -static struct pcmcia_device *dev_table[CM_MAX_DEV];
> -
> -#ifndef CM4040_DEBUG
> -#define xoutb outb
> -#define xinb inb
> -#else
> -static inline void xoutb(unsigned char val, unsigned short port)
> -{
> - pr_debug("outb(val=%.2x,port=%.4x)\n", val, port);
> - outb(val, port);
> -}
> -
> -static inline unsigned char xinb(unsigned short port)
> -{
> - unsigned char val;
> -
> - val = inb(port);
> - pr_debug("%.2x=inb(%.4x)\n", val, port);
> - return val;
> -}
> -#endif
> -
> -/* poll the device fifo status register. not to be confused with
> - * the poll syscall. */
> -static void cm4040_do_poll(struct timer_list *t)
> -{
> - struct reader_dev *dev = from_timer(dev, t, poll_timer);
> - unsigned int obs = xinb(dev->p_dev->resource[0]->start
> - + REG_OFFSET_BUFFER_STATUS);
> -
> - if ((obs & BSR_BULK_IN_FULL)) {
> - set_bit(BS_READABLE, &dev->buffer_status);
> - DEBUGP(4, dev, "waking up read_wait\n");
> - wake_up_interruptible(&dev->read_wait);
> - } else
> - clear_bit(BS_READABLE, &dev->buffer_status);
> -
> - if (!(obs & BSR_BULK_OUT_FULL)) {
> - set_bit(BS_WRITABLE, &dev->buffer_status);
> - DEBUGP(4, dev, "waking up write_wait\n");
> - wake_up_interruptible(&dev->write_wait);
> - } else
> - clear_bit(BS_WRITABLE, &dev->buffer_status);
> -
> - if (dev->buffer_status)
> - wake_up_interruptible(&dev->poll_wait);
> -
> - mod_timer(&dev->poll_timer, jiffies + POLL_PERIOD);
> -}
> -
> -static void cm4040_stop_poll(struct reader_dev *dev)
> -{
> - del_timer_sync(&dev->poll_timer);
> -}
> -
> -static int wait_for_bulk_out_ready(struct reader_dev *dev)
> -{
> - int i, rc;
> - int iobase = dev->p_dev->resource[0]->start;
> -
> - for (i = 0; i < POLL_LOOP_COUNT; i++) {
> - if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS)
> - & BSR_BULK_OUT_FULL) == 0) {
> - DEBUGP(4, dev, "BulkOut empty (i=%d)\n", i);
> - return 1;
> - }
> - }
> -
> - DEBUGP(4, dev, "wait_event_interruptible_timeout(timeout=%ld\n",
> - dev->timeout);
> - rc = wait_event_interruptible_timeout(dev->write_wait,
> - test_and_clear_bit(BS_WRITABLE,
> - &dev->buffer_status),
> - dev->timeout);
> -
> - if (rc > 0)
> - DEBUGP(4, dev, "woke up: BulkOut empty\n");
> - else if (rc == 0)
> - DEBUGP(4, dev, "woke up: BulkOut full, returning 0 :(\n");
> - else if (rc < 0)
> - DEBUGP(4, dev, "woke up: signal arrived\n");
> -
> - return rc;
> -}
> -
> -/* Write to Sync Control Register */
> -static int write_sync_reg(unsigned char val, struct reader_dev *dev)
> -{
> - int iobase = dev->p_dev->resource[0]->start;
> - int rc;
> -
> - rc = wait_for_bulk_out_ready(dev);
> - if (rc <= 0)
> - return rc;
> -
> - xoutb(val, iobase + REG_OFFSET_SYNC_CONTROL);
> - rc = wait_for_bulk_out_ready(dev);
> - if (rc <= 0)
> - return rc;
> -
> - return 1;
> -}
> -
> -static int wait_for_bulk_in_ready(struct reader_dev *dev)
> -{
> - int i, rc;
> - int iobase = dev->p_dev->resource[0]->start;
> -
> - for (i = 0; i < POLL_LOOP_COUNT; i++) {
> - if ((xinb(iobase + REG_OFFSET_BUFFER_STATUS)
> - & BSR_BULK_IN_FULL) == BSR_BULK_IN_FULL) {
> - DEBUGP(3, dev, "BulkIn full (i=%d)\n", i);
> - return 1;
> - }
> - }
> -
> - DEBUGP(4, dev, "wait_event_interruptible_timeout(timeout=%ld\n",
> - dev->timeout);
> - rc = wait_event_interruptible_timeout(dev->read_wait,
> - test_and_clear_bit(BS_READABLE,
> - &dev->buffer_status),
> - dev->timeout);
> - if (rc > 0)
> - DEBUGP(4, dev, "woke up: BulkIn full\n");
> - else if (rc == 0)
> - DEBUGP(4, dev, "woke up: BulkIn not full, returning 0 :(\n");
> - else if (rc < 0)
> - DEBUGP(4, dev, "woke up: signal arrived\n");
> -
> - return rc;
> -}
> -
> -static ssize_t cm4040_read(struct file *filp, char __user *buf,
> - size_t count, loff_t *ppos)
> -{
> - struct reader_dev *dev = filp->private_data;
> - int iobase = dev->p_dev->resource[0]->start;
> - size_t bytes_to_read;
> - unsigned long i;
> - size_t min_bytes_to_read;
> - int rc;
> -
> - DEBUGP(2, dev, "-> cm4040_read(%s,%d)\n", current->comm, current->pid);
> -
> - if (count == 0)
> - return 0;
> -
> - if (count < 10)
> - return -EFAULT;
> -
> - if (filp->f_flags & O_NONBLOCK) {
> - DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
> - DEBUGP(2, dev, "<- cm4040_read (failure)\n");
> - return -EAGAIN;
> - }
> -
> - if (!pcmcia_dev_present(dev->p_dev))
> - return -ENODEV;
> -
> - for (i = 0; i < 5; i++) {
> - rc = wait_for_bulk_in_ready(dev);
> - if (rc <= 0) {
> - DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
> - DEBUGP(2, dev, "<- cm4040_read (failed)\n");
> - if (rc == -ERESTARTSYS)
> - return rc;
> - return -EIO;
> - }
> - dev->r_buf[i] = xinb(iobase + REG_OFFSET_BULK_IN);
> -#ifdef CM4040_DEBUG
> - pr_debug("%lu:%2x ", i, dev->r_buf[i]);
> - }
> - pr_debug("\n");
> -#else
> - }
> -#endif
> -
> - bytes_to_read = 5 + le32_to_cpu(*(__le32 *)&dev->r_buf[1]);
> -
> - DEBUGP(6, dev, "BytesToRead=%zu\n", bytes_to_read);
> -
> - min_bytes_to_read = min(count, bytes_to_read + 5);
> - min_bytes_to_read = min_t(size_t, min_bytes_to_read, READ_WRITE_BUFFER_SIZE);
> -
> - DEBUGP(6, dev, "Min=%zu\n", min_bytes_to_read);
> -
> - for (i = 0; i < (min_bytes_to_read-5); i++) {
> - rc = wait_for_bulk_in_ready(dev);
> - if (rc <= 0) {
> - DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
> - DEBUGP(2, dev, "<- cm4040_read (failed)\n");
> - if (rc == -ERESTARTSYS)
> - return rc;
> - return -EIO;
> - }
> - dev->r_buf[i+5] = xinb(iobase + REG_OFFSET_BULK_IN);
> -#ifdef CM4040_DEBUG
> - pr_debug("%lu:%2x ", i, dev->r_buf[i]);
> - }
> - pr_debug("\n");
> -#else
> - }
> -#endif
> -
> - *ppos = min_bytes_to_read;
> - if (copy_to_user(buf, dev->r_buf, min_bytes_to_read))
> - return -EFAULT;
> -
> - rc = wait_for_bulk_in_ready(dev);
> - if (rc <= 0) {
> - DEBUGP(5, dev, "wait_for_bulk_in_ready rc=%.2x\n", rc);
> - DEBUGP(2, dev, "<- cm4040_read (failed)\n");
> - if (rc == -ERESTARTSYS)
> - return rc;
> - return -EIO;
> - }
> -
> - rc = write_sync_reg(SCR_READER_TO_HOST_DONE, dev);
> - if (rc <= 0) {
> - DEBUGP(5, dev, "write_sync_reg c=%.2x\n", rc);
> - DEBUGP(2, dev, "<- cm4040_read (failed)\n");
> - if (rc == -ERESTARTSYS)
> - return rc;
> - else
> - return -EIO;
> - }
> -
> - xinb(iobase + REG_OFFSET_BULK_IN);
> -
> - DEBUGP(2, dev, "<- cm4040_read (successfully)\n");
> - return min_bytes_to_read;
> -}
> -
> -static ssize_t cm4040_write(struct file *filp, const char __user *buf,
> - size_t count, loff_t *ppos)
> -{
> - struct reader_dev *dev = filp->private_data;
> - int iobase = dev->p_dev->resource[0]->start;
> - ssize_t rc;
> - int i;
> - unsigned int bytes_to_write;
> -
> - DEBUGP(2, dev, "-> cm4040_write(%s,%d)\n", current->comm, current->pid);
> -
> - if (count == 0) {
> - DEBUGP(2, dev, "<- cm4040_write empty read (successfully)\n");
> - return 0;
> - }
> -
> - if ((count < 5) || (count > READ_WRITE_BUFFER_SIZE)) {
> - DEBUGP(2, dev, "<- cm4040_write buffersize=%zd < 5\n", count);
> - return -EIO;
> - }
> -
> - if (filp->f_flags & O_NONBLOCK) {
> - DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
> - DEBUGP(4, dev, "<- cm4040_write (failure)\n");
> - return -EAGAIN;
> - }
> -
> - if (!pcmcia_dev_present(dev->p_dev))
> - return -ENODEV;
> -
> - bytes_to_write = count;
> - if (copy_from_user(dev->s_buf, buf, bytes_to_write))
> - return -EFAULT;
> -
> - switch (dev->s_buf[0]) {
> - case CMD_PC_TO_RDR_XFRBLOCK:
> - case CMD_PC_TO_RDR_SECURE:
> - case CMD_PC_TO_RDR_TEST_SECURE:
> - case CMD_PC_TO_RDR_OK_SECURE:
> - dev->timeout = CCID_DRIVER_BULK_DEFAULT_TIMEOUT;
> - break;
> -
> - case CMD_PC_TO_RDR_ICCPOWERON:
> - dev->timeout = CCID_DRIVER_ASYNC_POWERUP_TIMEOUT;
> - break;
> -
> - case CMD_PC_TO_RDR_GETSLOTSTATUS:
> - case CMD_PC_TO_RDR_ICCPOWEROFF:
> - case CMD_PC_TO_RDR_GETPARAMETERS:
> - case CMD_PC_TO_RDR_RESETPARAMETERS:
> - case CMD_PC_TO_RDR_SETPARAMETERS:
> - case CMD_PC_TO_RDR_ESCAPE:
> - case CMD_PC_TO_RDR_ICCCLOCK:
> - default:
> - dev->timeout = CCID_DRIVER_MINIMUM_TIMEOUT;
> - break;
> - }
> -
> - rc = write_sync_reg(SCR_HOST_TO_READER_START, dev);
> - if (rc <= 0) {
> - DEBUGP(5, dev, "write_sync_reg c=%.2zx\n", rc);
> - DEBUGP(2, dev, "<- cm4040_write (failed)\n");
> - if (rc == -ERESTARTSYS)
> - return rc;
> - else
> - return -EIO;
> - }
> -
> - DEBUGP(4, dev, "start \n");
> -
> - for (i = 0; i < bytes_to_write; i++) {
> - rc = wait_for_bulk_out_ready(dev);
> - if (rc <= 0) {
> - DEBUGP(5, dev, "wait_for_bulk_out_ready rc=%.2zx\n",
> - rc);
> - DEBUGP(2, dev, "<- cm4040_write (failed)\n");
> - if (rc == -ERESTARTSYS)
> - return rc;
> - else
> - return -EIO;
> - }
> -
> - xoutb(dev->s_buf[i],iobase + REG_OFFSET_BULK_OUT);
> - }
> - DEBUGP(4, dev, "end\n");
> -
> - rc = write_sync_reg(SCR_HOST_TO_READER_DONE, dev);
> -
> - if (rc <= 0) {
> - DEBUGP(5, dev, "write_sync_reg c=%.2zx\n", rc);
> - DEBUGP(2, dev, "<- cm4040_write (failed)\n");
> - if (rc == -ERESTARTSYS)
> - return rc;
> - else
> - return -EIO;
> - }
> -
> - DEBUGP(2, dev, "<- cm4040_write (successfully)\n");
> - return count;
> -}
> -
> -static __poll_t cm4040_poll(struct file *filp, poll_table *wait)
> -{
> - struct reader_dev *dev = filp->private_data;
> - __poll_t mask = 0;
> -
> - poll_wait(filp, &dev->poll_wait, wait);
> -
> - if (test_and_clear_bit(BS_READABLE, &dev->buffer_status))
> - mask |= EPOLLIN | EPOLLRDNORM;
> - if (test_and_clear_bit(BS_WRITABLE, &dev->buffer_status))
> - mask |= EPOLLOUT | EPOLLWRNORM;
> -
> - DEBUGP(2, dev, "<- cm4040_poll(%u)\n", mask);
> -
> - return mask;
> -}
> -
> -static int cm4040_open(struct inode *inode, struct file *filp)
> -{
> - struct reader_dev *dev;
> - struct pcmcia_device *link;
> - int minor = iminor(inode);
> - int ret;
> -
> - if (minor >= CM_MAX_DEV)
> - return -ENODEV;
> -
> - mutex_lock(&cm4040_mutex);
> - link = dev_table[minor];
> - if (link == NULL || !pcmcia_dev_present(link)) {
> - ret = -ENODEV;
> - goto out;
> - }
> -
> - if (link->open) {
> - ret = -EBUSY;
> - goto out;
> - }
> -
> - dev = link->priv;
> - filp->private_data = dev;
> -
> - if (filp->f_flags & O_NONBLOCK) {
> - DEBUGP(4, dev, "filep->f_flags O_NONBLOCK set\n");
> - ret = -EAGAIN;
> - goto out;
> - }
> -
> - link->open = 1;
> -
> - mod_timer(&dev->poll_timer, jiffies + POLL_PERIOD);
> -
> - DEBUGP(2, dev, "<- cm4040_open (successfully)\n");
> - ret = nonseekable_open(inode, filp);
> -out:
> - mutex_unlock(&cm4040_mutex);
> - return ret;
> -}
> -
> -static int cm4040_close(struct inode *inode, struct file *filp)
> -{
> - struct reader_dev *dev = filp->private_data;
> - struct pcmcia_device *link;
> - int minor = iminor(inode);
> -
> - DEBUGP(2, dev, "-> cm4040_close(maj/min=%d.%d)\n", imajor(inode),
> - iminor(inode));
> -
> - if (minor >= CM_MAX_DEV)
> - return -ENODEV;
> -
> - link = dev_table[minor];
> - if (link == NULL)
> - return -ENODEV;
> -
> - cm4040_stop_poll(dev);
> -
> - link->open = 0;
> - wake_up(&dev->devq);
> -
> - DEBUGP(2, dev, "<- cm4040_close\n");
> - return 0;
> -}
> -
> -static void cm4040_reader_release(struct pcmcia_device *link)
> -{
> - struct reader_dev *dev = link->priv;
> -
> - DEBUGP(3, dev, "-> cm4040_reader_release\n");
> - while (link->open) {
> - DEBUGP(3, dev, MODULE_NAME ": delaying release "
> - "until process has terminated\n");
> - wait_event(dev->devq, (link->open == 0));
> - }
> - DEBUGP(3, dev, "<- cm4040_reader_release\n");
> - return;
> -}
> -
> -static int cm4040_config_check(struct pcmcia_device *p_dev, void *priv_data)
> -{
> - return pcmcia_request_io(p_dev);
> -}
> -
> -
> -static int reader_config(struct pcmcia_device *link, int devno)
> -{
> - struct reader_dev *dev;
> - int fail_rc;
> -
> - link->config_flags |= CONF_AUTO_SET_IO;
> -
> - if (pcmcia_loop_config(link, cm4040_config_check, NULL))
> - goto cs_release;
> -
> - fail_rc = pcmcia_enable_device(link);
> - if (fail_rc != 0) {
> - dev_info(&link->dev, "pcmcia_enable_device failed 0x%x\n",
> - fail_rc);
> - goto cs_release;
> - }
> -
> - dev = link->priv;
> -
> - DEBUGP(2, dev, "device " DEVICE_NAME "%d at %pR\n", devno,
> - link->resource[0]);
> - DEBUGP(2, dev, "<- reader_config (succ)\n");
> -
> - return 0;
> -
> -cs_release:
> - reader_release(link);
> - return -ENODEV;
> -}
> -
> -static void reader_release(struct pcmcia_device *link)
> -{
> - cm4040_reader_release(link);
> - pcmcia_disable_device(link);
> -}
> -
> -static int reader_probe(struct pcmcia_device *link)
> -{
> - struct reader_dev *dev;
> - int i, ret;
> -
> - for (i = 0; i < CM_MAX_DEV; i++) {
> - if (dev_table[i] == NULL)
> - break;
> - }
> -
> - if (i == CM_MAX_DEV)
> - return -ENODEV;
> -
> - dev = kzalloc(sizeof(struct reader_dev), GFP_KERNEL);
> - if (dev == NULL)
> - return -ENOMEM;
> -
> - dev->timeout = CCID_DRIVER_MINIMUM_TIMEOUT;
> - dev->buffer_status = 0;
> -
> - link->priv = dev;
> - dev->p_dev = link;
> -
> - dev_table[i] = link;
> -
> - init_waitqueue_head(&dev->devq);
> - init_waitqueue_head(&dev->poll_wait);
> - init_waitqueue_head(&dev->read_wait);
> - init_waitqueue_head(&dev->write_wait);
> - timer_setup(&dev->poll_timer, cm4040_do_poll, 0);
> -
> - ret = reader_config(link, i);
> - if (ret) {
> - dev_table[i] = NULL;
> - kfree(dev);
> - return ret;
> - }
> -
> - device_create(cmx_class, NULL, MKDEV(major, i), NULL, "cmx%d", i);
> -
> - return 0;
> -}
> -
> -static void reader_detach(struct pcmcia_device *link)
> -{
> - struct reader_dev *dev = link->priv;
> - int devno;
> -
> - /* find device */
> - for (devno = 0; devno < CM_MAX_DEV; devno++) {
> - if (dev_table[devno] == link)
> - break;
> - }
> - if (devno == CM_MAX_DEV)
> - return;
> -
> - reader_release(link);
> -
> - dev_table[devno] = NULL;
> - kfree(dev);
> -
> - device_destroy(cmx_class, MKDEV(major, devno));
> -
> - return;
> -}
> -
> -static const struct file_operations reader_fops = {
> - .owner = THIS_MODULE,
> - .read = cm4040_read,
> - .write = cm4040_write,
> - .open = cm4040_open,
> - .release = cm4040_close,
> - .poll = cm4040_poll,
> - .llseek = no_llseek,
> -};
> -
> -static const struct pcmcia_device_id cm4040_ids[] = {
> - PCMCIA_DEVICE_MANF_CARD(0x0223, 0x0200),
> - PCMCIA_DEVICE_PROD_ID12("OMNIKEY", "CardMan 4040",
> - 0xE32CDD8C, 0x8F23318B),
> - PCMCIA_DEVICE_NULL,
> -};
> -MODULE_DEVICE_TABLE(pcmcia, cm4040_ids);
> -
> -static struct pcmcia_driver reader_driver = {
> - .owner = THIS_MODULE,
> - .name = "cm4040_cs",
> - .probe = reader_probe,
> - .remove = reader_detach,
> - .id_table = cm4040_ids,
> -};
> -
> -static int __init cm4040_init(void)
> -{
> - int rc;
> -
> - cmx_class = class_create(THIS_MODULE, "cardman_4040");
> - if (IS_ERR(cmx_class))
> - return PTR_ERR(cmx_class);
> -
> - major = register_chrdev(0, DEVICE_NAME, &reader_fops);
> - if (major < 0) {
> - printk(KERN_WARNING MODULE_NAME
> - ": could not get major number\n");
> - class_destroy(cmx_class);
> - return major;
> - }
> -
> - rc = pcmcia_register_driver(&reader_driver);
> - if (rc < 0) {
> - unregister_chrdev(major, DEVICE_NAME);
> - class_destroy(cmx_class);
> - return rc;
> - }
> -
> - return 0;
> -}
> -
> -static void __exit cm4040_exit(void)
> -{
> - pcmcia_unregister_driver(&reader_driver);
> - unregister_chrdev(major, DEVICE_NAME);
> - class_destroy(cmx_class);
> -}
> -
> -module_init(cm4040_init);
> -module_exit(cm4040_exit);
> -MODULE_LICENSE("Dual BSD/GPL");
> diff --git a/drivers/char/pcmcia/cm4040_cs.h b/drivers/char/pcmcia/cm4040_cs.h
> deleted file mode 100644
> index e2ffff995d51..000000000000
> --- a/drivers/char/pcmcia/cm4040_cs.h
> +++ /dev/null
> @@ -1,48 +0,0 @@
> -/* SPDX-License-Identifier: GPL-2.0 */
> -#ifndef _CM4040_H_
> -#define _CM4040_H_
> -
> -#define CM_MAX_DEV 4
> -
> -#define DEVICE_NAME "cmx"
> -#define MODULE_NAME "cm4040_cs"
> -
> -#define REG_OFFSET_BULK_OUT 0
> -#define REG_OFFSET_BULK_IN 0
> -#define REG_OFFSET_BUFFER_STATUS 1
> -#define REG_OFFSET_SYNC_CONTROL 2
> -
> -#define BSR_BULK_IN_FULL 0x02
> -#define BSR_BULK_OUT_FULL 0x01
> -
> -#define SCR_HOST_TO_READER_START 0x80
> -#define SCR_ABORT 0x40
> -#define SCR_EN_NOTIFY 0x20
> -#define SCR_ACK_NOTIFY 0x10
> -#define SCR_READER_TO_HOST_DONE 0x08
> -#define SCR_HOST_TO_READER_DONE 0x04
> -#define SCR_PULSE_INTERRUPT 0x02
> -#define SCR_POWER_DOWN 0x01
> -
> -
> -#define CMD_PC_TO_RDR_ICCPOWERON 0x62
> -#define CMD_PC_TO_RDR_GETSLOTSTATUS 0x65
> -#define CMD_PC_TO_RDR_ICCPOWEROFF 0x63
> -#define CMD_PC_TO_RDR_SECURE 0x69
> -#define CMD_PC_TO_RDR_GETPARAMETERS 0x6C
> -#define CMD_PC_TO_RDR_RESETPARAMETERS 0x6D
> -#define CMD_PC_TO_RDR_SETPARAMETERS 0x61
> -#define CMD_PC_TO_RDR_XFRBLOCK 0x6F
> -#define CMD_PC_TO_RDR_ESCAPE 0x6B
> -#define CMD_PC_TO_RDR_ICCCLOCK 0x6E
> -#define CMD_PC_TO_RDR_TEST_SECURE 0x74
> -#define CMD_PC_TO_RDR_OK_SECURE 0x89
> -
> -
> -#define CMD_RDR_TO_PC_SLOTSTATUS 0x81
> -#define CMD_RDR_TO_PC_DATABLOCK 0x80
> -#define CMD_RDR_TO_PC_PARAMETERS 0x82
> -#define CMD_RDR_TO_PC_ESCAPE 0x83
> -#define CMD_RDR_TO_PC_OK_SECURE 0x89
> -
> -#endif /* _CM4040_H_ */
> diff --git a/drivers/char/pcmcia/scr24x_cs.c b/drivers/char/pcmcia/scr24x_cs.c
> deleted file mode 100644
> index 1bdce08fae3d..000000000000
> --- a/drivers/char/pcmcia/scr24x_cs.c
> +++ /dev/null
> @@ -1,359 +0,0 @@
> -// SPDX-License-Identifier: GPL-2.0-or-later
> -/*
> - * SCR24x PCMCIA Smart Card Reader Driver
> - *
> - * Copyright (C) 2005-2006 TL Sudheendran
> - * Copyright (C) 2016 Lubomir Rintel
> - *
> - * Derived from "scr24x_v4.2.6_Release.tar.gz" driver by TL Sudheendran.
> - */
> -
> -#include <linux/device.h>
> -#include <linux/module.h>
> -#include <linux/delay.h>
> -#include <linux/cdev.h>
> -#include <linux/slab.h>
> -#include <linux/fs.h>
> -#include <linux/io.h>
> -#include <linux/uaccess.h>
> -
> -#include <pcmcia/cistpl.h>
> -#include <pcmcia/ds.h>
> -
> -#define CCID_HEADER_SIZE 10
> -#define CCID_LENGTH_OFFSET 1
> -#define CCID_MAX_LEN 271
> -
> -#define SCR24X_DATA(n) (1 + n)
> -#define SCR24X_CMD_STATUS 7
> -#define CMD_START 0x40
> -#define CMD_WRITE_BYTE 0x41
> -#define CMD_READ_BYTE 0x42
> -#define STATUS_BUSY 0x80
> -
> -struct scr24x_dev {
> - struct device *dev;
> - struct cdev c_dev;
> - unsigned char buf[CCID_MAX_LEN];
> - int devno;
> - struct mutex lock;
> - struct kref refcnt;
> - u8 __iomem *regs;
> -};
> -
> -#define SCR24X_DEVS 8
> -static DECLARE_BITMAP(scr24x_minors, SCR24X_DEVS);
> -
> -static struct class *scr24x_class;
> -static dev_t scr24x_devt;
> -
> -static void scr24x_delete(struct kref *kref)
> -{
> - struct scr24x_dev *dev = container_of(kref, struct scr24x_dev,
> - refcnt);
> -
> - kfree(dev);
> -}
> -
> -static int scr24x_wait_ready(struct scr24x_dev *dev)
> -{
> - u_char status;
> - int timeout = 100;
> -
> - do {
> - status = ioread8(dev->regs + SCR24X_CMD_STATUS);
> - if (!(status & STATUS_BUSY))
> - return 0;
> -
> - msleep(20);
> - } while (--timeout);
> -
> - return -EIO;
> -}
> -
> -static int scr24x_open(struct inode *inode, struct file *filp)
> -{
> - struct scr24x_dev *dev = container_of(inode->i_cdev,
> - struct scr24x_dev, c_dev);
> -
> - kref_get(&dev->refcnt);
> - filp->private_data = dev;
> -
> - return stream_open(inode, filp);
> -}
> -
> -static int scr24x_release(struct inode *inode, struct file *filp)
> -{
> - struct scr24x_dev *dev = filp->private_data;
> -
> - /* We must not take the dev->lock here as scr24x_delete()
> - * might be called to remove the dev structure altogether.
> - * We don't need the lock anyway, since after the reference
> - * acquired in probe() is released in remove() the chrdev
> - * is already unregistered and noone can possibly acquire
> - * a reference via open() anymore. */
> - kref_put(&dev->refcnt, scr24x_delete);
> - return 0;
> -}
> -
> -static int read_chunk(struct scr24x_dev *dev, size_t offset, size_t limit)
> -{
> - size_t i, y;
> - int ret;
> -
> - for (i = offset; i < limit; i += 5) {
> - iowrite8(CMD_READ_BYTE, dev->regs + SCR24X_CMD_STATUS);
> - ret = scr24x_wait_ready(dev);
> - if (ret < 0)
> - return ret;
> -
> - for (y = 0; y < 5 && i + y < limit; y++)
> - dev->buf[i + y] = ioread8(dev->regs + SCR24X_DATA(y));
> - }
> -
> - return 0;
> -}
> -
> -static ssize_t scr24x_read(struct file *filp, char __user *buf, size_t count,
> - loff_t *ppos)
> -{
> - struct scr24x_dev *dev = filp->private_data;
> - int ret;
> - int len;
> -
> - if (count < CCID_HEADER_SIZE)
> - return -EINVAL;
> -
> - if (mutex_lock_interruptible(&dev->lock))
> - return -ERESTARTSYS;
> -
> - if (!dev->dev) {
> - ret = -ENODEV;
> - goto out;
> - }
> -
> - ret = scr24x_wait_ready(dev);
> - if (ret < 0)
> - goto out;
> - len = CCID_HEADER_SIZE;
> - ret = read_chunk(dev, 0, len);
> - if (ret < 0)
> - goto out;
> -
> - len += le32_to_cpu(*(__le32 *)(&dev->buf[CCID_LENGTH_OFFSET]));
> - if (len > sizeof(dev->buf)) {
> - ret = -EIO;
> - goto out;
> - }
> - ret = read_chunk(dev, CCID_HEADER_SIZE, len);
> - if (ret < 0)
> - goto out;
> -
> - if (len < count)
> - count = len;
> -
> - if (copy_to_user(buf, dev->buf, count)) {
> - ret = -EFAULT;
> - goto out;
> - }
> -
> - ret = count;
> -out:
> - mutex_unlock(&dev->lock);
> - return ret;
> -}
> -
> -static ssize_t scr24x_write(struct file *filp, const char __user *buf,
> - size_t count, loff_t *ppos)
> -{
> - struct scr24x_dev *dev = filp->private_data;
> - size_t i, y;
> - int ret;
> -
> - if (mutex_lock_interruptible(&dev->lock))
> - return -ERESTARTSYS;
> -
> - if (!dev->dev) {
> - ret = -ENODEV;
> - goto out;
> - }
> -
> - if (count > sizeof(dev->buf)) {
> - ret = -EINVAL;
> - goto out;
> - }
> -
> - if (copy_from_user(dev->buf, buf, count)) {
> - ret = -EFAULT;
> - goto out;
> - }
> -
> - ret = scr24x_wait_ready(dev);
> - if (ret < 0)
> - goto out;
> -
> - iowrite8(CMD_START, dev->regs + SCR24X_CMD_STATUS);
> - ret = scr24x_wait_ready(dev);
> - if (ret < 0)
> - goto out;
> -
> - for (i = 0; i < count; i += 5) {
> - for (y = 0; y < 5 && i + y < count; y++)
> - iowrite8(dev->buf[i + y], dev->regs + SCR24X_DATA(y));
> -
> - iowrite8(CMD_WRITE_BYTE, dev->regs + SCR24X_CMD_STATUS);
> - ret = scr24x_wait_ready(dev);
> - if (ret < 0)
> - goto out;
> - }
> -
> - ret = count;
> -out:
> - mutex_unlock(&dev->lock);
> - return ret;
> -}
> -
> -static const struct file_operations scr24x_fops = {
> - .owner = THIS_MODULE,
> - .read = scr24x_read,
> - .write = scr24x_write,
> - .open = scr24x_open,
> - .release = scr24x_release,
> - .llseek = no_llseek,
> -};
> -
> -static int scr24x_config_check(struct pcmcia_device *link, void *priv_data)
> -{
> - if (resource_size(link->resource[PCMCIA_IOPORT_0]) != 0x11)
> - return -ENODEV;
> - return pcmcia_request_io(link);
> -}
> -
> -static int scr24x_probe(struct pcmcia_device *link)
> -{
> - struct scr24x_dev *dev;
> - int ret;
> -
> - dev = kzalloc(sizeof(*dev), GFP_KERNEL);
> - if (!dev)
> - return -ENOMEM;
> -
> - dev->devno = find_first_zero_bit(scr24x_minors, SCR24X_DEVS);
> - if (dev->devno >= SCR24X_DEVS) {
> - ret = -EBUSY;
> - goto err;
> - }
> -
> - mutex_init(&dev->lock);
> - kref_init(&dev->refcnt);
> -
> - link->priv = dev;
> - link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
> -
> - ret = pcmcia_loop_config(link, scr24x_config_check, NULL);
> - if (ret < 0)
> - goto err;
> -
> - dev->dev = &link->dev;
> - dev->regs = devm_ioport_map(&link->dev,
> - link->resource[PCMCIA_IOPORT_0]->start,
> - resource_size(link->resource[PCMCIA_IOPORT_0]));
> - if (!dev->regs) {
> - ret = -EIO;
> - goto err;
> - }
> -
> - cdev_init(&dev->c_dev, &scr24x_fops);
> - dev->c_dev.owner = THIS_MODULE;
> - ret = cdev_add(&dev->c_dev, MKDEV(MAJOR(scr24x_devt), dev->devno), 1);
> - if (ret < 0)
> - goto err;
> -
> - ret = pcmcia_enable_device(link);
> - if (ret < 0) {
> - pcmcia_disable_device(link);
> - goto err;
> - }
> -
> - device_create(scr24x_class, NULL, MKDEV(MAJOR(scr24x_devt), dev->devno),
> - NULL, "scr24x%d", dev->devno);
> -
> - dev_info(&link->dev, "SCR24x Chip Card Interface\n");
> - return 0;
> -
> -err:
> - if (dev->devno < SCR24X_DEVS)
> - clear_bit(dev->devno, scr24x_minors);
> - kfree (dev);
> - return ret;
> -}
> -
> -static void scr24x_remove(struct pcmcia_device *link)
> -{
> - struct scr24x_dev *dev = (struct scr24x_dev *)link->priv;
> -
> - device_destroy(scr24x_class, MKDEV(MAJOR(scr24x_devt), dev->devno));
> - mutex_lock(&dev->lock);
> - pcmcia_disable_device(link);
> - cdev_del(&dev->c_dev);
> - clear_bit(dev->devno, scr24x_minors);
> - dev->dev = NULL;
> - mutex_unlock(&dev->lock);
> -
> - kref_put(&dev->refcnt, scr24x_delete);
> -}
> -
> -static const struct pcmcia_device_id scr24x_ids[] = {
> - PCMCIA_DEVICE_PROD_ID12("HP", "PC Card Smart Card Reader",
> - 0x53cb94f9, 0xbfdf89a5),
> - PCMCIA_DEVICE_PROD_ID1("SCR241 PCMCIA", 0x6271efa3),
> - PCMCIA_DEVICE_PROD_ID1("SCR243 PCMCIA", 0x2054e8de),
> - PCMCIA_DEVICE_PROD_ID1("SCR24x PCMCIA", 0x54a33665),
> - PCMCIA_DEVICE_NULL
> -};
> -MODULE_DEVICE_TABLE(pcmcia, scr24x_ids);
> -
> -static struct pcmcia_driver scr24x_driver = {
> - .owner = THIS_MODULE,
> - .name = "scr24x_cs",
> - .probe = scr24x_probe,
> - .remove = scr24x_remove,
> - .id_table = scr24x_ids,
> -};
> -
> -static int __init scr24x_init(void)
> -{
> - int ret;
> -
> - scr24x_class = class_create(THIS_MODULE, "scr24x");
> - if (IS_ERR(scr24x_class))
> - return PTR_ERR(scr24x_class);
> -
> - ret = alloc_chrdev_region(&scr24x_devt, 0, SCR24X_DEVS, "scr24x");
> - if (ret < 0) {
> - class_destroy(scr24x_class);
> - return ret;
> - }
> -
> - ret = pcmcia_register_driver(&scr24x_driver);
> - if (ret < 0) {
> - unregister_chrdev_region(scr24x_devt, SCR24X_DEVS);
> - class_destroy(scr24x_class);
> - }
> -
> - return ret;
> -}
> -
> -static void __exit scr24x_exit(void)
> -{
> - pcmcia_unregister_driver(&scr24x_driver);
> - unregister_chrdev_region(scr24x_devt, SCR24X_DEVS);
> - class_destroy(scr24x_class);
> -}
> -
> -module_init(scr24x_init);
> -module_exit(scr24x_exit);
> -
> -MODULE_AUTHOR("Lubomir Rintel");
> -MODULE_DESCRIPTION("SCR24x PCMCIA Smart Card Reader Driver");
> -MODULE_LICENSE("GPL");
> diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
> deleted file mode 100644
> index 1154a67044a9..000000000000
> --- a/drivers/char/pcmcia/synclink_cs.c
> +++ /dev/null
> @@ -1,4280 +0,0 @@
> -/*
> - * linux/drivers/char/pcmcia/synclink_cs.c
> - *
> - * $Id: synclink_cs.c,v 4.34 2005/09/08 13:20:54 paulkf Exp $
> - *
> - * Device driver for Microgate SyncLink PC Card
> - * multiprotocol serial adapter.
> - *
> - * written by Paul Fulghum for Microgate Corporation
> - * paulkf@...rogate.com
> - *
> - * Microgate and SyncLink are trademarks of Microgate Corporation
> - *
> - * This code is released under the GNU General Public License (GPL)
> - *
> - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
> - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
> - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
> - * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
> - * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
> - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
> - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
> - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
> - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
> - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
> - * OF THE POSSIBILITY OF SUCH DAMAGE.
> - */
> -
> -#define VERSION(ver,rel,seq) (((ver)<<16) | ((rel)<<8) | (seq))
> -#if defined(__i386__)
> -# define BREAKPOINT() asm(" int $3");
> -#else
> -# define BREAKPOINT() { }
> -#endif
> -
> -#define MAX_DEVICE_COUNT 4
> -
> -#include <linux/module.h>
> -#include <linux/errno.h>
> -#include <linux/signal.h>
> -#include <linux/sched.h>
> -#include <linux/timer.h>
> -#include <linux/time.h>
> -#include <linux/interrupt.h>
> -#include <linux/tty.h>
> -#include <linux/tty_flip.h>
> -#include <linux/serial.h>
> -#include <linux/major.h>
> -#include <linux/string.h>
> -#include <linux/fcntl.h>
> -#include <linux/ptrace.h>
> -#include <linux/ioport.h>
> -#include <linux/mm.h>
> -#include <linux/seq_file.h>
> -#include <linux/slab.h>
> -#include <linux/netdevice.h>
> -#include <linux/vmalloc.h>
> -#include <linux/init.h>
> -#include <linux/delay.h>
> -#include <linux/ioctl.h>
> -#include <linux/synclink.h>
> -
> -#include <asm/io.h>
> -#include <asm/irq.h>
> -#include <asm/dma.h>
> -#include <linux/bitops.h>
> -#include <asm/types.h>
> -#include <linux/termios.h>
> -#include <linux/workqueue.h>
> -#include <linux/hdlc.h>
> -
> -#include <pcmcia/cistpl.h>
> -#include <pcmcia/cisreg.h>
> -#include <pcmcia/ds.h>
> -
> -#if defined(CONFIG_HDLC) || (defined(CONFIG_HDLC_MODULE) && defined(CONFIG_SYNCLINK_CS_MODULE))
> -#define SYNCLINK_GENERIC_HDLC 1
> -#else
> -#define SYNCLINK_GENERIC_HDLC 0
> -#endif
> -
> -#define GET_USER(error,value,addr) error = get_user(value,addr)
> -#define COPY_FROM_USER(error,dest,src,size) error = copy_from_user(dest,src,size) ? -EFAULT : 0
> -#define PUT_USER(error,value,addr) error = put_user(value,addr)
> -#define COPY_TO_USER(error,dest,src,size) error = copy_to_user(dest,src,size) ? -EFAULT : 0
> -
> -#include <linux/uaccess.h>
> -
> -static MGSL_PARAMS default_params = {
> - MGSL_MODE_HDLC, /* unsigned long mode */
> - 0, /* unsigned char loopback; */
> - HDLC_FLAG_UNDERRUN_ABORT15, /* unsigned short flags; */
> - HDLC_ENCODING_NRZI_SPACE, /* unsigned char encoding; */
> - 0, /* unsigned long clock_speed; */
> - 0xff, /* unsigned char addr_filter; */
> - HDLC_CRC_16_CCITT, /* unsigned short crc_type; */
> - HDLC_PREAMBLE_LENGTH_8BITS, /* unsigned char preamble_length; */
> - HDLC_PREAMBLE_PATTERN_NONE, /* unsigned char preamble; */
> - 9600, /* unsigned long data_rate; */
> - 8, /* unsigned char data_bits; */
> - 1, /* unsigned char stop_bits; */
> - ASYNC_PARITY_NONE /* unsigned char parity; */
> -};
> -
> -typedef struct {
> - int count;
> - unsigned char status;
> - char data[1];
> -} RXBUF;
> -
> -/* The queue of BH actions to be performed */
> -
> -#define BH_RECEIVE 1
> -#define BH_TRANSMIT 2
> -#define BH_STATUS 4
> -
> -#define IO_PIN_SHUTDOWN_LIMIT 100
> -
> -#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
> -
> -struct _input_signal_events {
> - int ri_up;
> - int ri_down;
> - int dsr_up;
> - int dsr_down;
> - int dcd_up;
> - int dcd_down;
> - int cts_up;
> - int cts_down;
> -};
> -
> -
> -/*
> - * Device instance data structure
> - */
> -
> -typedef struct _mgslpc_info {
> - struct tty_port port;
> - void *if_ptr; /* General purpose pointer (used by SPPP) */
> - int magic;
> - int line;
> -
> - struct mgsl_icount icount;
> -
> - int timeout;
> - int x_char; /* xon/xoff character */
> - unsigned char read_status_mask;
> - unsigned char ignore_status_mask;
> -
> - unsigned char *tx_buf;
> - int tx_put;
> - int tx_get;
> - int tx_count;
> -
> - /* circular list of fixed length rx buffers */
> -
> - unsigned char *rx_buf; /* memory allocated for all rx buffers */
> - int rx_buf_total_size; /* size of memory allocated for rx buffers */
> - int rx_put; /* index of next empty rx buffer */
> - int rx_get; /* index of next full rx buffer */
> - int rx_buf_size; /* size in bytes of single rx buffer */
> - int rx_buf_count; /* total number of rx buffers */
> - int rx_frame_count; /* number of full rx buffers */
> -
> - wait_queue_head_t status_event_wait_q;
> - wait_queue_head_t event_wait_q;
> - struct timer_list tx_timer; /* HDLC transmit timeout timer */
> - struct _mgslpc_info *next_device; /* device list link */
> -
> - unsigned short imra_value;
> - unsigned short imrb_value;
> - unsigned char pim_value;
> -
> - spinlock_t lock;
> - struct work_struct task; /* task structure for scheduling bh */
> -
> - u32 max_frame_size;
> -
> - u32 pending_bh;
> -
> - bool bh_running;
> - bool bh_requested;
> -
> - int dcd_chkcount; /* check counts to prevent */
> - int cts_chkcount; /* too many IRQs if a signal */
> - int dsr_chkcount; /* is floating */
> - int ri_chkcount;
> -
> - bool rx_enabled;
> - bool rx_overflow;
> -
> - bool tx_enabled;
> - bool tx_active;
> - bool tx_aborting;
> - u32 idle_mode;
> -
> - int if_mode; /* serial interface selection (RS-232, v.35 etc) */
> -
> - char device_name[25]; /* device instance name */
> -
> - unsigned int io_base; /* base I/O address of adapter */
> - unsigned int irq_level;
> -
> - MGSL_PARAMS params; /* communications parameters */
> -
> - unsigned char serial_signals; /* current serial signal states */
> -
> - bool irq_occurred; /* for diagnostics use */
> - char testing_irq;
> - unsigned int init_error; /* startup error (DIAGS) */
> -
> - bool drop_rts_on_tx_done;
> -
> - struct _input_signal_events input_signal_events;
> -
> - /* PCMCIA support */
> - struct pcmcia_device *p_dev;
> - int stop;
> -
> - /* SPPP/Cisco HDLC device parts */
> - int netcount;
> - spinlock_t netlock;
> -
> -#if SYNCLINK_GENERIC_HDLC
> - struct net_device *netdev;
> -#endif
> -
> -} MGSLPC_INFO;
> -
> -#define MGSLPC_MAGIC 0x5402
> -
> -/*
> - * The size of the serial xmit buffer is 1 page, or 4096 bytes
> - */
> -#define TXBUFSIZE 4096
> -
> -
> -#define CHA 0x00 /* channel A offset */
> -#define CHB 0x40 /* channel B offset */
> -
> -/*
> - * FIXME: PPC has PVR defined in asm/reg.h. For now we just undef it.
> - */
> -#undef PVR
> -
> -#define RXFIFO 0
> -#define TXFIFO 0
> -#define STAR 0x20
> -#define CMDR 0x20
> -#define RSTA 0x21
> -#define PRE 0x21
> -#define MODE 0x22
> -#define TIMR 0x23
> -#define XAD1 0x24
> -#define XAD2 0x25
> -#define RAH1 0x26
> -#define RAH2 0x27
> -#define DAFO 0x27
> -#define RAL1 0x28
> -#define RFC 0x28
> -#define RHCR 0x29
> -#define RAL2 0x29
> -#define RBCL 0x2a
> -#define XBCL 0x2a
> -#define RBCH 0x2b
> -#define XBCH 0x2b
> -#define CCR0 0x2c
> -#define CCR1 0x2d
> -#define CCR2 0x2e
> -#define CCR3 0x2f
> -#define VSTR 0x34
> -#define BGR 0x34
> -#define RLCR 0x35
> -#define AML 0x36
> -#define AMH 0x37
> -#define GIS 0x38
> -#define IVA 0x38
> -#define IPC 0x39
> -#define ISR 0x3a
> -#define IMR 0x3a
> -#define PVR 0x3c
> -#define PIS 0x3d
> -#define PIM 0x3d
> -#define PCR 0x3e
> -#define CCR4 0x3f
> -
> -// IMR/ISR
> -
> -#define IRQ_BREAK_ON BIT15 // rx break detected
> -#define IRQ_DATAOVERRUN BIT14 // receive data overflow
> -#define IRQ_ALLSENT BIT13 // all sent
> -#define IRQ_UNDERRUN BIT12 // transmit data underrun
> -#define IRQ_TIMER BIT11 // timer interrupt
> -#define IRQ_CTS BIT10 // CTS status change
> -#define IRQ_TXREPEAT BIT9 // tx message repeat
> -#define IRQ_TXFIFO BIT8 // transmit pool ready
> -#define IRQ_RXEOM BIT7 // receive message end
> -#define IRQ_EXITHUNT BIT6 // receive frame start
> -#define IRQ_RXTIME BIT6 // rx char timeout
> -#define IRQ_DCD BIT2 // carrier detect status change
> -#define IRQ_OVERRUN BIT1 // receive frame overflow
> -#define IRQ_RXFIFO BIT0 // receive pool full
> -
> -// STAR
> -
> -#define XFW BIT6 // transmit FIFO write enable
> -#define CEC BIT2 // command executing
> -#define CTS BIT1 // CTS state
> -
> -#define PVR_DTR BIT0
> -#define PVR_DSR BIT1
> -#define PVR_RI BIT2
> -#define PVR_AUTOCTS BIT3
> -#define PVR_RS232 0x20 /* 0010b */
> -#define PVR_V35 0xe0 /* 1110b */
> -#define PVR_RS422 0x40 /* 0100b */
> -
> -/* Register access functions */
> -
> -#define write_reg(info, reg, val) outb((val),(info)->io_base + (reg))
> -#define read_reg(info, reg) inb((info)->io_base + (reg))
> -
> -#define read_reg16(info, reg) inw((info)->io_base + (reg))
> -#define write_reg16(info, reg, val) outw((val), (info)->io_base + (reg))
> -
> -#define set_reg_bits(info, reg, mask) \
> - write_reg(info, (reg), \
> - (unsigned char) (read_reg(info, (reg)) | (mask)))
> -#define clear_reg_bits(info, reg, mask) \
> - write_reg(info, (reg), \
> - (unsigned char) (read_reg(info, (reg)) & ~(mask)))
> -/*
> - * interrupt enable/disable routines
> - */
> -static void irq_disable(MGSLPC_INFO *info, unsigned char channel, unsigned short mask)
> -{
> - if (channel == CHA) {
> - info->imra_value |= mask;
> - write_reg16(info, CHA + IMR, info->imra_value);
> - } else {
> - info->imrb_value |= mask;
> - write_reg16(info, CHB + IMR, info->imrb_value);
> - }
> -}
> -static void irq_enable(MGSLPC_INFO *info, unsigned char channel, unsigned short mask)
> -{
> - if (channel == CHA) {
> - info->imra_value &= ~mask;
> - write_reg16(info, CHA + IMR, info->imra_value);
> - } else {
> - info->imrb_value &= ~mask;
> - write_reg16(info, CHB + IMR, info->imrb_value);
> - }
> -}
> -
> -#define port_irq_disable(info, mask) \
> - { info->pim_value |= (mask); write_reg(info, PIM, info->pim_value); }
> -
> -#define port_irq_enable(info, mask) \
> - { info->pim_value &= ~(mask); write_reg(info, PIM, info->pim_value); }
> -
> -static void rx_start(MGSLPC_INFO *info);
> -static void rx_stop(MGSLPC_INFO *info);
> -
> -static void tx_start(MGSLPC_INFO *info, struct tty_struct *tty);
> -static void tx_stop(MGSLPC_INFO *info);
> -static void tx_set_idle(MGSLPC_INFO *info);
> -
> -static void get_signals(MGSLPC_INFO *info);
> -static void set_signals(MGSLPC_INFO *info);
> -
> -static void reset_device(MGSLPC_INFO *info);
> -
> -static void hdlc_mode(MGSLPC_INFO *info);
> -static void async_mode(MGSLPC_INFO *info);
> -
> -static void tx_timeout(struct timer_list *t);
> -
> -static bool carrier_raised(struct tty_port *port);
> -static void dtr_rts(struct tty_port *port, bool active);
> -
> -#if SYNCLINK_GENERIC_HDLC
> -#define dev_to_port(D) (dev_to_hdlc(D)->priv)
> -static void hdlcdev_tx_done(MGSLPC_INFO *info);
> -static void hdlcdev_rx(MGSLPC_INFO *info, char *buf, int size);
> -static int hdlcdev_init(MGSLPC_INFO *info);
> -static void hdlcdev_exit(MGSLPC_INFO *info);
> -#endif
> -
> -static void trace_block(MGSLPC_INFO *info,const char* data, int count, int xmit);
> -
> -static bool register_test(MGSLPC_INFO *info);
> -static bool irq_test(MGSLPC_INFO *info);
> -static int adapter_test(MGSLPC_INFO *info);
> -
> -static int claim_resources(MGSLPC_INFO *info);
> -static void release_resources(MGSLPC_INFO *info);
> -static int mgslpc_add_device(MGSLPC_INFO *info);
> -static void mgslpc_remove_device(MGSLPC_INFO *info);
> -
> -static bool rx_get_frame(MGSLPC_INFO *info, struct tty_struct *tty);
> -static void rx_reset_buffers(MGSLPC_INFO *info);
> -static int rx_alloc_buffers(MGSLPC_INFO *info);
> -static void rx_free_buffers(MGSLPC_INFO *info);
> -
> -static irqreturn_t mgslpc_isr(int irq, void *dev_id);
> -
> -/*
> - * Bottom half interrupt handlers
> - */
> -static void bh_handler(struct work_struct *work);
> -static void bh_transmit(MGSLPC_INFO *info, struct tty_struct *tty);
> -static void bh_status(MGSLPC_INFO *info);
> -
> -/*
> - * ioctl handlers
> - */
> -static int tiocmget(struct tty_struct *tty);
> -static int tiocmset(struct tty_struct *tty,
> - unsigned int set, unsigned int clear);
> -static int get_stats(MGSLPC_INFO *info, struct mgsl_icount __user *user_icount);
> -static int get_params(MGSLPC_INFO *info, MGSL_PARAMS __user *user_params);
> -static int set_params(MGSLPC_INFO *info, MGSL_PARAMS __user *new_params, struct tty_struct *tty);
> -static int get_txidle(MGSLPC_INFO *info, int __user *idle_mode);
> -static int set_txidle(MGSLPC_INFO *info, int idle_mode);
> -static int set_txenable(MGSLPC_INFO *info, int enable, struct tty_struct *tty);
> -static int tx_abort(MGSLPC_INFO *info);
> -static int set_rxenable(MGSLPC_INFO *info, int enable);
> -static int wait_events(MGSLPC_INFO *info, int __user *mask);
> -
> -static MGSLPC_INFO *mgslpc_device_list = NULL;
> -static int mgslpc_device_count = 0;
> -
> -/*
> - * Set this param to non-zero to load eax with the
> - * .text section address and breakpoint on module load.
> - * This is useful for use with gdb and add-symbol-file command.
> - */
> -static bool break_on_load;
> -
> -/*
> - * Driver major number, defaults to zero to get auto
> - * assigned major number. May be forced as module parameter.
> - */
> -static int ttymajor=0;
> -
> -static int debug_level = 0;
> -static int maxframe[MAX_DEVICE_COUNT] = {0,};
> -
> -module_param(break_on_load, bool, 0);
> -module_param(ttymajor, int, 0);
> -module_param(debug_level, int, 0);
> -module_param_array(maxframe, int, NULL, 0);
> -
> -MODULE_LICENSE("GPL");
> -
> -static char *driver_name = "SyncLink PC Card driver";
> -static char *driver_version = "$Revision: 4.34 $";
> -
> -static struct tty_driver *serial_driver;
> -
> -/* number of characters left in xmit buffer before we ask for more */
> -#define WAKEUP_CHARS 256
> -
> -static void mgslpc_change_params(MGSLPC_INFO *info, struct tty_struct *tty);
> -static void mgslpc_wait_until_sent(struct tty_struct *tty, int timeout);
> -
> -/* PCMCIA prototypes */
> -
> -static int mgslpc_config(struct pcmcia_device *link);
> -static void mgslpc_release(u_long arg);
> -static void mgslpc_detach(struct pcmcia_device *p_dev);
> -
> -/*
> - * 1st function defined in .text section. Calling this function in
> - * init_module() followed by a breakpoint allows a remote debugger
> - * (gdb) to get the .text address for the add-symbol-file command.
> - * This allows remote debugging of dynamically loadable modules.
> - */
> -static void* mgslpc_get_text_ptr(void)
> -{
> - return mgslpc_get_text_ptr;
> -}
> -
> -/*
> - * line discipline callback wrappers
> - *
> - * The wrappers maintain line discipline references
> - * while calling into the line discipline.
> - *
> - * ldisc_receive_buf - pass receive data to line discipline
> - */
> -
> -static void ldisc_receive_buf(struct tty_struct *tty,
> - const __u8 *data, char *flags, int count)
> -{
> - struct tty_ldisc *ld;
> - if (!tty)
> - return;
> - ld = tty_ldisc_ref(tty);
> - if (ld) {
> - if (ld->ops->receive_buf)
> - ld->ops->receive_buf(tty, data, flags, count);
> - tty_ldisc_deref(ld);
> - }
> -}
> -
> -static const struct tty_port_operations mgslpc_port_ops = {
> - .carrier_raised = carrier_raised,
> - .dtr_rts = dtr_rts
> -};
> -
> -static int mgslpc_probe(struct pcmcia_device *link)
> -{
> - MGSLPC_INFO *info;
> - int ret;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("mgslpc_attach\n");
> -
> - info = kzalloc(sizeof(MGSLPC_INFO), GFP_KERNEL);
> - if (!info) {
> - printk("Error can't allocate device instance data\n");
> - return -ENOMEM;
> - }
> -
> - info->magic = MGSLPC_MAGIC;
> - tty_port_init(&info->port);
> - info->port.ops = &mgslpc_port_ops;
> - INIT_WORK(&info->task, bh_handler);
> - info->max_frame_size = 4096;
> - init_waitqueue_head(&info->status_event_wait_q);
> - init_waitqueue_head(&info->event_wait_q);
> - spin_lock_init(&info->lock);
> - spin_lock_init(&info->netlock);
> - memcpy(&info->params,&default_params,sizeof(MGSL_PARAMS));
> - info->idle_mode = HDLC_TXIDLE_FLAGS;
> - info->imra_value = 0xffff;
> - info->imrb_value = 0xffff;
> - info->pim_value = 0xff;
> -
> - info->p_dev = link;
> - link->priv = info;
> -
> - /* Initialize the struct pcmcia_device structure */
> -
> - ret = mgslpc_config(link);
> - if (ret != 0)
> - goto failed;
> -
> - ret = mgslpc_add_device(info);
> - if (ret != 0)
> - goto failed_release;
> -
> - return 0;
> -
> -failed_release:
> - mgslpc_release((u_long)link);
> -failed:
> - tty_port_destroy(&info->port);
> - kfree(info);
> - return ret;
> -}
> -
> -/* Card has been inserted.
> - */
> -
> -static int mgslpc_ioprobe(struct pcmcia_device *p_dev, void *priv_data)
> -{
> - return pcmcia_request_io(p_dev);
> -}
> -
> -static int mgslpc_config(struct pcmcia_device *link)
> -{
> - MGSLPC_INFO *info = link->priv;
> - int ret;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("mgslpc_config(0x%p)\n", link);
> -
> - link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
> -
> - ret = pcmcia_loop_config(link, mgslpc_ioprobe, NULL);
> - if (ret != 0)
> - goto failed;
> -
> - link->config_index = 8;
> - link->config_regs = PRESENT_OPTION;
> -
> - ret = pcmcia_request_irq(link, mgslpc_isr);
> - if (ret)
> - goto failed;
> - ret = pcmcia_enable_device(link);
> - if (ret)
> - goto failed;
> -
> - info->io_base = link->resource[0]->start;
> - info->irq_level = link->irq;
> - return 0;
> -
> -failed:
> - mgslpc_release((u_long)link);
> - return -ENODEV;
> -}
> -
> -/* Card has been removed.
> - * Unregister device and release PCMCIA configuration.
> - * If device is open, postpone until it is closed.
> - */
> -static void mgslpc_release(u_long arg)
> -{
> - struct pcmcia_device *link = (struct pcmcia_device *)arg;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("mgslpc_release(0x%p)\n", link);
> -
> - pcmcia_disable_device(link);
> -}
> -
> -static void mgslpc_detach(struct pcmcia_device *link)
> -{
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("mgslpc_detach(0x%p)\n", link);
> -
> - ((MGSLPC_INFO *)link->priv)->stop = 1;
> - mgslpc_release((u_long)link);
> -
> - mgslpc_remove_device((MGSLPC_INFO *)link->priv);
> -}
> -
> -static int mgslpc_suspend(struct pcmcia_device *link)
> -{
> - MGSLPC_INFO *info = link->priv;
> -
> - info->stop = 1;
> -
> - return 0;
> -}
> -
> -static int mgslpc_resume(struct pcmcia_device *link)
> -{
> - MGSLPC_INFO *info = link->priv;
> -
> - info->stop = 0;
> -
> - return 0;
> -}
> -
> -
> -static inline bool mgslpc_paranoia_check(MGSLPC_INFO *info,
> - char *name, const char *routine)
> -{
> -#ifdef MGSLPC_PARANOIA_CHECK
> - static const char *badmagic =
> - "Warning: bad magic number for mgsl struct (%s) in %s\n";
> - static const char *badinfo =
> - "Warning: null mgslpc_info for (%s) in %s\n";
> -
> - if (!info) {
> - printk(badinfo, name, routine);
> - return true;
> - }
> - if (info->magic != MGSLPC_MAGIC) {
> - printk(badmagic, name, routine);
> - return true;
> - }
> -#else
> - if (!info)
> - return true;
> -#endif
> - return false;
> -}
> -
> -
> -#define CMD_RXFIFO BIT7 // release current rx FIFO
> -#define CMD_RXRESET BIT6 // receiver reset
> -#define CMD_RXFIFO_READ BIT5
> -#define CMD_START_TIMER BIT4
> -#define CMD_TXFIFO BIT3 // release current tx FIFO
> -#define CMD_TXEOM BIT1 // transmit end message
> -#define CMD_TXRESET BIT0 // transmit reset
> -
> -static bool wait_command_complete(MGSLPC_INFO *info, unsigned char channel)
> -{
> - int i = 0;
> - /* wait for command completion */
> - while (read_reg(info, (unsigned char)(channel+STAR)) & BIT2) {
> - udelay(1);
> - if (i++ == 1000)
> - return false;
> - }
> - return true;
> -}
> -
> -static void issue_command(MGSLPC_INFO *info, unsigned char channel, unsigned char cmd)
> -{
> - wait_command_complete(info, channel);
> - write_reg(info, (unsigned char) (channel + CMDR), cmd);
> -}
> -
> -static void tx_pause(struct tty_struct *tty)
> -{
> - MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
> - unsigned long flags;
> -
> - if (mgslpc_paranoia_check(info, tty->name, "tx_pause"))
> - return;
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("tx_pause(%s)\n", info->device_name);
> -
> - spin_lock_irqsave(&info->lock, flags);
> - if (info->tx_enabled)
> - tx_stop(info);
> - spin_unlock_irqrestore(&info->lock, flags);
> -}
> -
> -static void tx_release(struct tty_struct *tty)
> -{
> - MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
> - unsigned long flags;
> -
> - if (mgslpc_paranoia_check(info, tty->name, "tx_release"))
> - return;
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("tx_release(%s)\n", info->device_name);
> -
> - spin_lock_irqsave(&info->lock, flags);
> - if (!info->tx_enabled)
> - tx_start(info, tty);
> - spin_unlock_irqrestore(&info->lock, flags);
> -}
> -
> -/* Return next bottom half action to perform.
> - * or 0 if nothing to do.
> - */
> -static int bh_action(MGSLPC_INFO *info)
> -{
> - unsigned long flags;
> - int rc = 0;
> -
> - spin_lock_irqsave(&info->lock, flags);
> -
> - if (info->pending_bh & BH_RECEIVE) {
> - info->pending_bh &= ~BH_RECEIVE;
> - rc = BH_RECEIVE;
> - } else if (info->pending_bh & BH_TRANSMIT) {
> - info->pending_bh &= ~BH_TRANSMIT;
> - rc = BH_TRANSMIT;
> - } else if (info->pending_bh & BH_STATUS) {
> - info->pending_bh &= ~BH_STATUS;
> - rc = BH_STATUS;
> - }
> -
> - if (!rc) {
> - /* Mark BH routine as complete */
> - info->bh_running = false;
> - info->bh_requested = false;
> - }
> -
> - spin_unlock_irqrestore(&info->lock, flags);
> -
> - return rc;
> -}
> -
> -static void bh_handler(struct work_struct *work)
> -{
> - MGSLPC_INFO *info = container_of(work, MGSLPC_INFO, task);
> - struct tty_struct *tty;
> - int action;
> -
> - if (debug_level >= DEBUG_LEVEL_BH)
> - printk("%s(%d):bh_handler(%s) entry\n",
> - __FILE__,__LINE__,info->device_name);
> -
> - info->bh_running = true;
> - tty = tty_port_tty_get(&info->port);
> -
> - while((action = bh_action(info)) != 0) {
> -
> - /* Process work item */
> - if (debug_level >= DEBUG_LEVEL_BH)
> - printk("%s(%d):bh_handler() work item action=%d\n",
> - __FILE__,__LINE__,action);
> -
> - switch (action) {
> -
> - case BH_RECEIVE:
> - while(rx_get_frame(info, tty));
> - break;
> - case BH_TRANSMIT:
> - bh_transmit(info, tty);
> - break;
> - case BH_STATUS:
> - bh_status(info);
> - break;
> - default:
> - /* unknown work item ID */
> - printk("Unknown work item ID=%08X!\n", action);
> - break;
> - }
> - }
> -
> - tty_kref_put(tty);
> - if (debug_level >= DEBUG_LEVEL_BH)
> - printk("%s(%d):bh_handler(%s) exit\n",
> - __FILE__,__LINE__,info->device_name);
> -}
> -
> -static void bh_transmit(MGSLPC_INFO *info, struct tty_struct *tty)
> -{
> - if (debug_level >= DEBUG_LEVEL_BH)
> - printk("bh_transmit() entry on %s\n", info->device_name);
> -
> - if (tty)
> - tty_wakeup(tty);
> -}
> -
> -static void bh_status(MGSLPC_INFO *info)
> -{
> - info->ri_chkcount = 0;
> - info->dsr_chkcount = 0;
> - info->dcd_chkcount = 0;
> - info->cts_chkcount = 0;
> -}
> -
> -/* eom: non-zero = end of frame */
> -static void rx_ready_hdlc(MGSLPC_INFO *info, int eom)
> -{
> - unsigned char data[2];
> - unsigned char fifo_count, read_count, i;
> - RXBUF *buf = (RXBUF*)(info->rx_buf + (info->rx_put * info->rx_buf_size));
> -
> - if (debug_level >= DEBUG_LEVEL_ISR)
> - printk("%s(%d):rx_ready_hdlc(eom=%d)\n", __FILE__, __LINE__, eom);
> -
> - if (!info->rx_enabled)
> - return;
> -
> - if (info->rx_frame_count >= info->rx_buf_count) {
> - /* no more free buffers */
> - issue_command(info, CHA, CMD_RXRESET);
> - info->pending_bh |= BH_RECEIVE;
> - info->rx_overflow = true;
> - info->icount.buf_overrun++;
> - return;
> - }
> -
> - if (eom) {
> - /* end of frame, get FIFO count from RBCL register */
> - fifo_count = (unsigned char)(read_reg(info, CHA+RBCL) & 0x1f);
> - if (fifo_count == 0)
> - fifo_count = 32;
> - } else
> - fifo_count = 32;
> -
> - do {
> - if (fifo_count == 1) {
> - read_count = 1;
> - data[0] = read_reg(info, CHA + RXFIFO);
> - } else {
> - read_count = 2;
> - *((unsigned short *) data) = read_reg16(info, CHA + RXFIFO);
> - }
> - fifo_count -= read_count;
> - if (!fifo_count && eom)
> - buf->status = data[--read_count];
> -
> - for (i = 0; i < read_count; i++) {
> - if (buf->count >= info->max_frame_size) {
> - /* frame too large, reset receiver and reset current buffer */
> - issue_command(info, CHA, CMD_RXRESET);
> - buf->count = 0;
> - return;
> - }
> - *(buf->data + buf->count) = data[i];
> - buf->count++;
> - }
> - } while (fifo_count);
> -
> - if (eom) {
> - info->pending_bh |= BH_RECEIVE;
> - info->rx_frame_count++;
> - info->rx_put++;
> - if (info->rx_put >= info->rx_buf_count)
> - info->rx_put = 0;
> - }
> - issue_command(info, CHA, CMD_RXFIFO);
> -}
> -
> -static void rx_ready_async(MGSLPC_INFO *info, int tcd)
> -{
> - struct tty_port *port = &info->port;
> - unsigned char data, status, flag;
> - int fifo_count;
> - int work = 0;
> - struct mgsl_icount *icount = &info->icount;
> -
> - if (tcd) {
> - /* early termination, get FIFO count from RBCL register */
> - fifo_count = (unsigned char)(read_reg(info, CHA+RBCL) & 0x1f);
> -
> - /* Zero fifo count could mean 0 or 32 bytes available.
> - * If BIT5 of STAR is set then at least 1 byte is available.
> - */
> - if (!fifo_count && (read_reg(info,CHA+STAR) & BIT5))
> - fifo_count = 32;
> - } else
> - fifo_count = 32;
> -
> - tty_buffer_request_room(port, fifo_count);
> - /* Flush received async data to receive data buffer. */
> - while (fifo_count) {
> - data = read_reg(info, CHA + RXFIFO);
> - status = read_reg(info, CHA + RXFIFO);
> - fifo_count -= 2;
> -
> - icount->rx++;
> - flag = TTY_NORMAL;
> -
> - // if no frameing/crc error then save data
> - // BIT7:parity error
> - // BIT6:framing error
> -
> - if (status & (BIT7 | BIT6)) {
> - if (status & BIT7)
> - icount->parity++;
> - else
> - icount->frame++;
> -
> - /* discard char if tty control flags say so */
> - if (status & info->ignore_status_mask)
> - continue;
> -
> - status &= info->read_status_mask;
> -
> - if (status & BIT7)
> - flag = TTY_PARITY;
> - else if (status & BIT6)
> - flag = TTY_FRAME;
> - }
> - work += tty_insert_flip_char(port, data, flag);
> - }
> - issue_command(info, CHA, CMD_RXFIFO);
> -
> - if (debug_level >= DEBUG_LEVEL_ISR) {
> - printk("%s(%d):rx_ready_async",
> - __FILE__,__LINE__);
> - printk("%s(%d):rx=%d brk=%d parity=%d frame=%d overrun=%d\n",
> - __FILE__,__LINE__,icount->rx,icount->brk,
> - icount->parity,icount->frame,icount->overrun);
> - }
> -
> - if (work)
> - tty_flip_buffer_push(port);
> -}
> -
> -
> -static void tx_done(MGSLPC_INFO *info, struct tty_struct *tty)
> -{
> - if (!info->tx_active)
> - return;
> -
> - info->tx_active = false;
> - info->tx_aborting = false;
> -
> - if (info->params.mode == MGSL_MODE_ASYNC)
> - return;
> -
> - info->tx_count = info->tx_put = info->tx_get = 0;
> - del_timer(&info->tx_timer);
> -
> - if (info->drop_rts_on_tx_done) {
> - get_signals(info);
> - if (info->serial_signals & SerialSignal_RTS) {
> - info->serial_signals &= ~SerialSignal_RTS;
> - set_signals(info);
> - }
> - info->drop_rts_on_tx_done = false;
> - }
> -
> -#if SYNCLINK_GENERIC_HDLC
> - if (info->netcount)
> - hdlcdev_tx_done(info);
> - else
> -#endif
> - {
> - if (tty && (tty->flow.stopped || tty->hw_stopped)) {
> - tx_stop(info);
> - return;
> - }
> - info->pending_bh |= BH_TRANSMIT;
> - }
> -}
> -
> -static void tx_ready(MGSLPC_INFO *info, struct tty_struct *tty)
> -{
> - unsigned char fifo_count = 32;
> - int c;
> -
> - if (debug_level >= DEBUG_LEVEL_ISR)
> - printk("%s(%d):tx_ready(%s)\n", __FILE__, __LINE__, info->device_name);
> -
> - if (info->params.mode == MGSL_MODE_HDLC) {
> - if (!info->tx_active)
> - return;
> - } else {
> - if (tty && (tty->flow.stopped || tty->hw_stopped)) {
> - tx_stop(info);
> - return;
> - }
> - if (!info->tx_count)
> - info->tx_active = false;
> - }
> -
> - if (!info->tx_count)
> - return;
> -
> - while (info->tx_count && fifo_count) {
> - c = min(2, min_t(int, fifo_count, min(info->tx_count, TXBUFSIZE - info->tx_get)));
> -
> - if (c == 1) {
> - write_reg(info, CHA + TXFIFO, *(info->tx_buf + info->tx_get));
> - } else {
> - write_reg16(info, CHA + TXFIFO,
> - *((unsigned short*)(info->tx_buf + info->tx_get)));
> - }
> - info->tx_count -= c;
> - info->tx_get = (info->tx_get + c) & (TXBUFSIZE - 1);
> - fifo_count -= c;
> - }
> -
> - if (info->params.mode == MGSL_MODE_ASYNC) {
> - if (info->tx_count < WAKEUP_CHARS)
> - info->pending_bh |= BH_TRANSMIT;
> - issue_command(info, CHA, CMD_TXFIFO);
> - } else {
> - if (info->tx_count)
> - issue_command(info, CHA, CMD_TXFIFO);
> - else
> - issue_command(info, CHA, CMD_TXFIFO + CMD_TXEOM);
> - }
> -}
> -
> -static void cts_change(MGSLPC_INFO *info, struct tty_struct *tty)
> -{
> - get_signals(info);
> - if ((info->cts_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT)
> - irq_disable(info, CHB, IRQ_CTS);
> - info->icount.cts++;
> - if (info->serial_signals & SerialSignal_CTS)
> - info->input_signal_events.cts_up++;
> - else
> - info->input_signal_events.cts_down++;
> - wake_up_interruptible(&info->status_event_wait_q);
> - wake_up_interruptible(&info->event_wait_q);
> -
> - if (tty && tty_port_cts_enabled(&info->port)) {
> - if (tty->hw_stopped) {
> - if (info->serial_signals & SerialSignal_CTS) {
> - if (debug_level >= DEBUG_LEVEL_ISR)
> - printk("CTS tx start...");
> - tty->hw_stopped = 0;
> - tx_start(info, tty);
> - info->pending_bh |= BH_TRANSMIT;
> - return;
> - }
> - } else {
> - if (!(info->serial_signals & SerialSignal_CTS)) {
> - if (debug_level >= DEBUG_LEVEL_ISR)
> - printk("CTS tx stop...");
> - tty->hw_stopped = 1;
> - tx_stop(info);
> - }
> - }
> - }
> - info->pending_bh |= BH_STATUS;
> -}
> -
> -static void dcd_change(MGSLPC_INFO *info, struct tty_struct *tty)
> -{
> - get_signals(info);
> - if ((info->dcd_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT)
> - irq_disable(info, CHB, IRQ_DCD);
> - info->icount.dcd++;
> - if (info->serial_signals & SerialSignal_DCD) {
> - info->input_signal_events.dcd_up++;
> - }
> - else
> - info->input_signal_events.dcd_down++;
> -#if SYNCLINK_GENERIC_HDLC
> - if (info->netcount) {
> - if (info->serial_signals & SerialSignal_DCD)
> - netif_carrier_on(info->netdev);
> - else
> - netif_carrier_off(info->netdev);
> - }
> -#endif
> - wake_up_interruptible(&info->status_event_wait_q);
> - wake_up_interruptible(&info->event_wait_q);
> -
> - if (tty_port_check_carrier(&info->port)) {
> - if (debug_level >= DEBUG_LEVEL_ISR)
> - printk("%s CD now %s...", info->device_name,
> - (info->serial_signals & SerialSignal_DCD) ? "on" : "off");
> - if (info->serial_signals & SerialSignal_DCD)
> - wake_up_interruptible(&info->port.open_wait);
> - else {
> - if (debug_level >= DEBUG_LEVEL_ISR)
> - printk("doing serial hangup...");
> - if (tty)
> - tty_hangup(tty);
> - }
> - }
> - info->pending_bh |= BH_STATUS;
> -}
> -
> -static void dsr_change(MGSLPC_INFO *info)
> -{
> - get_signals(info);
> - if ((info->dsr_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT)
> - port_irq_disable(info, PVR_DSR);
> - info->icount.dsr++;
> - if (info->serial_signals & SerialSignal_DSR)
> - info->input_signal_events.dsr_up++;
> - else
> - info->input_signal_events.dsr_down++;
> - wake_up_interruptible(&info->status_event_wait_q);
> - wake_up_interruptible(&info->event_wait_q);
> - info->pending_bh |= BH_STATUS;
> -}
> -
> -static void ri_change(MGSLPC_INFO *info)
> -{
> - get_signals(info);
> - if ((info->ri_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT)
> - port_irq_disable(info, PVR_RI);
> - info->icount.rng++;
> - if (info->serial_signals & SerialSignal_RI)
> - info->input_signal_events.ri_up++;
> - else
> - info->input_signal_events.ri_down++;
> - wake_up_interruptible(&info->status_event_wait_q);
> - wake_up_interruptible(&info->event_wait_q);
> - info->pending_bh |= BH_STATUS;
> -}
> -
> -/* Interrupt service routine entry point.
> - *
> - * Arguments:
> - *
> - * irq interrupt number that caused interrupt
> - * dev_id device ID supplied during interrupt registration
> - */
> -static irqreturn_t mgslpc_isr(int dummy, void *dev_id)
> -{
> - MGSLPC_INFO *info = dev_id;
> - struct tty_struct *tty;
> - unsigned short isr;
> - unsigned char gis, pis;
> - int count=0;
> -
> - if (debug_level >= DEBUG_LEVEL_ISR)
> - printk("mgslpc_isr(%d) entry.\n", info->irq_level);
> -
> - if (!(info->p_dev->_locked))
> - return IRQ_HANDLED;
> -
> - tty = tty_port_tty_get(&info->port);
> -
> - spin_lock(&info->lock);
> -
> - while ((gis = read_reg(info, CHA + GIS))) {
> - if (debug_level >= DEBUG_LEVEL_ISR)
> - printk("mgslpc_isr %s gis=%04X\n", info->device_name,gis);
> -
> - if ((gis & 0x70) || count > 1000) {
> - printk("synclink_cs:hardware failed or ejected\n");
> - break;
> - }
> - count++;
> -
> - if (gis & (BIT1 | BIT0)) {
> - isr = read_reg16(info, CHB + ISR);
> - if (isr & IRQ_DCD)
> - dcd_change(info, tty);
> - if (isr & IRQ_CTS)
> - cts_change(info, tty);
> - }
> - if (gis & (BIT3 | BIT2))
> - {
> - isr = read_reg16(info, CHA + ISR);
> - if (isr & IRQ_TIMER) {
> - info->irq_occurred = true;
> - irq_disable(info, CHA, IRQ_TIMER);
> - }
> -
> - /* receive IRQs */
> - if (isr & IRQ_EXITHUNT) {
> - info->icount.exithunt++;
> - wake_up_interruptible(&info->event_wait_q);
> - }
> - if (isr & IRQ_BREAK_ON) {
> - info->icount.brk++;
> - if (info->port.flags & ASYNC_SAK)
> - do_SAK(tty);
> - }
> - if (isr & IRQ_RXTIME) {
> - issue_command(info, CHA, CMD_RXFIFO_READ);
> - }
> - if (isr & (IRQ_RXEOM | IRQ_RXFIFO)) {
> - if (info->params.mode == MGSL_MODE_HDLC)
> - rx_ready_hdlc(info, isr & IRQ_RXEOM);
> - else
> - rx_ready_async(info, isr & IRQ_RXEOM);
> - }
> -
> - /* transmit IRQs */
> - if (isr & IRQ_UNDERRUN) {
> - if (info->tx_aborting)
> - info->icount.txabort++;
> - else
> - info->icount.txunder++;
> - tx_done(info, tty);
> - }
> - else if (isr & IRQ_ALLSENT) {
> - info->icount.txok++;
> - tx_done(info, tty);
> - }
> - else if (isr & IRQ_TXFIFO)
> - tx_ready(info, tty);
> - }
> - if (gis & BIT7) {
> - pis = read_reg(info, CHA + PIS);
> - if (pis & BIT1)
> - dsr_change(info);
> - if (pis & BIT2)
> - ri_change(info);
> - }
> - }
> -
> - /* Request bottom half processing if there's something
> - * for it to do and the bh is not already running
> - */
> -
> - if (info->pending_bh && !info->bh_running && !info->bh_requested) {
> - if (debug_level >= DEBUG_LEVEL_ISR)
> - printk("%s(%d):%s queueing bh task.\n",
> - __FILE__,__LINE__,info->device_name);
> - schedule_work(&info->task);
> - info->bh_requested = true;
> - }
> -
> - spin_unlock(&info->lock);
> - tty_kref_put(tty);
> -
> - if (debug_level >= DEBUG_LEVEL_ISR)
> - printk("%s(%d):mgslpc_isr(%d)exit.\n",
> - __FILE__, __LINE__, info->irq_level);
> -
> - return IRQ_HANDLED;
> -}
> -
> -/* Initialize and start device.
> - */
> -static int startup(MGSLPC_INFO * info, struct tty_struct *tty)
> -{
> - int retval = 0;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):startup(%s)\n", __FILE__, __LINE__, info->device_name);
> -
> - if (tty_port_initialized(&info->port))
> - return 0;
> -
> - if (!info->tx_buf) {
> - /* allocate a page of memory for a transmit buffer */
> - info->tx_buf = (unsigned char *)get_zeroed_page(GFP_KERNEL);
> - if (!info->tx_buf) {
> - printk(KERN_ERR"%s(%d):%s can't allocate transmit buffer\n",
> - __FILE__, __LINE__, info->device_name);
> - return -ENOMEM;
> - }
> - }
> -
> - info->pending_bh = 0;
> -
> - memset(&info->icount, 0, sizeof(info->icount));
> -
> - timer_setup(&info->tx_timer, tx_timeout, 0);
> -
> - /* Allocate and claim adapter resources */
> - retval = claim_resources(info);
> -
> - /* perform existence check and diagnostics */
> - if (!retval)
> - retval = adapter_test(info);
> -
> - if (retval) {
> - if (capable(CAP_SYS_ADMIN) && tty)
> - set_bit(TTY_IO_ERROR, &tty->flags);
> - release_resources(info);
> - return retval;
> - }
> -
> - /* program hardware for current parameters */
> - mgslpc_change_params(info, tty);
> -
> - if (tty)
> - clear_bit(TTY_IO_ERROR, &tty->flags);
> -
> - tty_port_set_initialized(&info->port, true);
> -
> - return 0;
> -}
> -
> -/* Called by mgslpc_close() and mgslpc_hangup() to shutdown hardware
> - */
> -static void shutdown(MGSLPC_INFO * info, struct tty_struct *tty)
> -{
> - unsigned long flags;
> -
> - if (!tty_port_initialized(&info->port))
> - return;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_shutdown(%s)\n",
> - __FILE__, __LINE__, info->device_name);
> -
> - /* clear status wait queue because status changes */
> - /* can't happen after shutting down the hardware */
> - wake_up_interruptible(&info->status_event_wait_q);
> - wake_up_interruptible(&info->event_wait_q);
> -
> - del_timer_sync(&info->tx_timer);
> -
> - if (info->tx_buf) {
> - free_page((unsigned long) info->tx_buf);
> - info->tx_buf = NULL;
> - }
> -
> - spin_lock_irqsave(&info->lock, flags);
> -
> - rx_stop(info);
> - tx_stop(info);
> -
> - /* TODO:disable interrupts instead of reset to preserve signal states */
> - reset_device(info);
> -
> - if (!tty || C_HUPCL(tty)) {
> - info->serial_signals &= ~(SerialSignal_RTS | SerialSignal_DTR);
> - set_signals(info);
> - }
> -
> - spin_unlock_irqrestore(&info->lock, flags);
> -
> - release_resources(info);
> -
> - if (tty)
> - set_bit(TTY_IO_ERROR, &tty->flags);
> -
> - tty_port_set_initialized(&info->port, false);
> -}
> -
> -static void mgslpc_program_hw(MGSLPC_INFO *info, struct tty_struct *tty)
> -{
> - unsigned long flags;
> -
> - spin_lock_irqsave(&info->lock, flags);
> -
> - rx_stop(info);
> - tx_stop(info);
> - info->tx_count = info->tx_put = info->tx_get = 0;
> -
> - if (info->params.mode == MGSL_MODE_HDLC || info->netcount)
> - hdlc_mode(info);
> - else
> - async_mode(info);
> -
> - set_signals(info);
> -
> - info->dcd_chkcount = 0;
> - info->cts_chkcount = 0;
> - info->ri_chkcount = 0;
> - info->dsr_chkcount = 0;
> -
> - irq_enable(info, CHB, IRQ_DCD | IRQ_CTS);
> - port_irq_enable(info, (unsigned char) PVR_DSR | PVR_RI);
> - get_signals(info);
> -
> - if (info->netcount || (tty && C_CREAD(tty)))
> - rx_start(info);
> -
> - spin_unlock_irqrestore(&info->lock, flags);
> -}
> -
> -/* Reconfigure adapter based on new parameters
> - */
> -static void mgslpc_change_params(MGSLPC_INFO *info, struct tty_struct *tty)
> -{
> - unsigned cflag;
> - int bits_per_char;
> -
> - if (!tty)
> - return;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_change_params(%s)\n",
> - __FILE__, __LINE__, info->device_name);
> -
> - cflag = tty->termios.c_cflag;
> -
> - /* if B0 rate (hangup) specified then negate RTS and DTR */
> - /* otherwise assert RTS and DTR */
> - if (cflag & CBAUD)
> - info->serial_signals |= SerialSignal_RTS | SerialSignal_DTR;
> - else
> - info->serial_signals &= ~(SerialSignal_RTS | SerialSignal_DTR);
> -
> - /* byte size and parity */
> - if ((cflag & CSIZE) != CS8) {
> - cflag &= ~CSIZE;
> - cflag |= CS7;
> - tty->termios.c_cflag = cflag;
> - }
> - info->params.data_bits = tty_get_char_size(cflag);
> -
> - if (cflag & CSTOPB)
> - info->params.stop_bits = 2;
> - else
> - info->params.stop_bits = 1;
> -
> - info->params.parity = ASYNC_PARITY_NONE;
> - if (cflag & PARENB) {
> - if (cflag & PARODD)
> - info->params.parity = ASYNC_PARITY_ODD;
> - else
> - info->params.parity = ASYNC_PARITY_EVEN;
> - if (cflag & CMSPAR)
> - info->params.parity = ASYNC_PARITY_SPACE;
> - }
> -
> - /* calculate number of jiffies to transmit a full
> - * FIFO (32 bytes) at specified data rate
> - */
> - bits_per_char = info->params.data_bits +
> - info->params.stop_bits + 1;
> -
> - /* if port data rate is set to 460800 or less then
> - * allow tty settings to override, otherwise keep the
> - * current data rate.
> - */
> - if (info->params.data_rate <= 460800) {
> - info->params.data_rate = tty_get_baud_rate(tty);
> - }
> -
> - if (info->params.data_rate) {
> - info->timeout = (32*HZ*bits_per_char) /
> - info->params.data_rate;
> - }
> - info->timeout += HZ/50; /* Add .02 seconds of slop */
> -
> - tty_port_set_cts_flow(&info->port, cflag & CRTSCTS);
> - tty_port_set_check_carrier(&info->port, ~cflag & CLOCAL);
> -
> - /* process tty input control flags */
> -
> - info->read_status_mask = 0;
> - if (I_INPCK(tty))
> - info->read_status_mask |= BIT7 | BIT6;
> - if (I_IGNPAR(tty))
> - info->ignore_status_mask |= BIT7 | BIT6;
> -
> - mgslpc_program_hw(info, tty);
> -}
> -
> -/* Add a character to the transmit buffer
> - */
> -static int mgslpc_put_char(struct tty_struct *tty, unsigned char ch)
> -{
> - MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
> - unsigned long flags;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO) {
> - printk("%s(%d):mgslpc_put_char(%d) on %s\n",
> - __FILE__, __LINE__, ch, info->device_name);
> - }
> -
> - if (mgslpc_paranoia_check(info, tty->name, "mgslpc_put_char"))
> - return 0;
> -
> - if (!info->tx_buf)
> - return 0;
> -
> - spin_lock_irqsave(&info->lock, flags);
> -
> - if (info->params.mode == MGSL_MODE_ASYNC || !info->tx_active) {
> - if (info->tx_count < TXBUFSIZE - 1) {
> - info->tx_buf[info->tx_put++] = ch;
> - info->tx_put &= TXBUFSIZE-1;
> - info->tx_count++;
> - }
> - }
> -
> - spin_unlock_irqrestore(&info->lock, flags);
> - return 1;
> -}
> -
> -/* Enable transmitter so remaining characters in the
> - * transmit buffer are sent.
> - */
> -static void mgslpc_flush_chars(struct tty_struct *tty)
> -{
> - MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
> - unsigned long flags;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_flush_chars() entry on %s tx_count=%d\n",
> - __FILE__, __LINE__, info->device_name, info->tx_count);
> -
> - if (mgslpc_paranoia_check(info, tty->name, "mgslpc_flush_chars"))
> - return;
> -
> - if (info->tx_count <= 0 || tty->flow.stopped ||
> - tty->hw_stopped || !info->tx_buf)
> - return;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_flush_chars() entry on %s starting transmitter\n",
> - __FILE__, __LINE__, info->device_name);
> -
> - spin_lock_irqsave(&info->lock, flags);
> - if (!info->tx_active)
> - tx_start(info, tty);
> - spin_unlock_irqrestore(&info->lock, flags);
> -}
> -
> -/* Send a block of data
> - *
> - * Arguments:
> - *
> - * tty pointer to tty information structure
> - * buf pointer to buffer containing send data
> - * count size of send data in bytes
> - *
> - * Returns: number of characters written
> - */
> -static int mgslpc_write(struct tty_struct * tty,
> - const unsigned char *buf, int count)
> -{
> - int c, ret = 0;
> - MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
> - unsigned long flags;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_write(%s) count=%d\n",
> - __FILE__, __LINE__, info->device_name, count);
> -
> - if (mgslpc_paranoia_check(info, tty->name, "mgslpc_write") ||
> - !info->tx_buf)
> - goto cleanup;
> -
> - if (info->params.mode == MGSL_MODE_HDLC) {
> - if (count > TXBUFSIZE) {
> - ret = -EIO;
> - goto cleanup;
> - }
> - if (info->tx_active)
> - goto cleanup;
> - else if (info->tx_count)
> - goto start;
> - }
> -
> - for (;;) {
> - c = min(count,
> - min(TXBUFSIZE - info->tx_count - 1,
> - TXBUFSIZE - info->tx_put));
> - if (c <= 0)
> - break;
> -
> - memcpy(info->tx_buf + info->tx_put, buf, c);
> -
> - spin_lock_irqsave(&info->lock, flags);
> - info->tx_put = (info->tx_put + c) & (TXBUFSIZE-1);
> - info->tx_count += c;
> - spin_unlock_irqrestore(&info->lock, flags);
> -
> - buf += c;
> - count -= c;
> - ret += c;
> - }
> -start:
> - if (info->tx_count && !tty->flow.stopped && !tty->hw_stopped) {
> - spin_lock_irqsave(&info->lock, flags);
> - if (!info->tx_active)
> - tx_start(info, tty);
> - spin_unlock_irqrestore(&info->lock, flags);
> - }
> -cleanup:
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_write(%s) returning=%d\n",
> - __FILE__, __LINE__, info->device_name, ret);
> - return ret;
> -}
> -
> -/* Return the count of free bytes in transmit buffer
> - */
> -static unsigned int mgslpc_write_room(struct tty_struct *tty)
> -{
> - MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
> - int ret;
> -
> - if (mgslpc_paranoia_check(info, tty->name, "mgslpc_write_room"))
> - return 0;
> -
> - if (info->params.mode == MGSL_MODE_HDLC) {
> - /* HDLC (frame oriented) mode */
> - if (info->tx_active)
> - return 0;
> - else
> - return HDLC_MAX_FRAME_SIZE;
> - } else {
> - ret = TXBUFSIZE - info->tx_count - 1;
> - if (ret < 0)
> - ret = 0;
> - }
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_write_room(%s)=%d\n",
> - __FILE__, __LINE__, info->device_name, ret);
> - return ret;
> -}
> -
> -/* Return the count of bytes in transmit buffer
> - */
> -static unsigned int mgslpc_chars_in_buffer(struct tty_struct *tty)
> -{
> - MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
> - unsigned int rc;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_chars_in_buffer(%s)\n",
> - __FILE__, __LINE__, info->device_name);
> -
> - if (mgslpc_paranoia_check(info, tty->name, "mgslpc_chars_in_buffer"))
> - return 0;
> -
> - if (info->params.mode == MGSL_MODE_HDLC)
> - rc = info->tx_active ? info->max_frame_size : 0;
> - else
> - rc = info->tx_count;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_chars_in_buffer(%s)=%u\n",
> - __FILE__, __LINE__, info->device_name, rc);
> -
> - return rc;
> -}
> -
> -/* Discard all data in the send buffer
> - */
> -static void mgslpc_flush_buffer(struct tty_struct *tty)
> -{
> - MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
> - unsigned long flags;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_flush_buffer(%s) entry\n",
> - __FILE__, __LINE__, info->device_name);
> -
> - if (mgslpc_paranoia_check(info, tty->name, "mgslpc_flush_buffer"))
> - return;
> -
> - spin_lock_irqsave(&info->lock, flags);
> - info->tx_count = info->tx_put = info->tx_get = 0;
> - del_timer(&info->tx_timer);
> - spin_unlock_irqrestore(&info->lock, flags);
> -
> - wake_up_interruptible(&tty->write_wait);
> - tty_wakeup(tty);
> -}
> -
> -/* Send a high-priority XON/XOFF character
> - */
> -static void mgslpc_send_xchar(struct tty_struct *tty, char ch)
> -{
> - MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
> - unsigned long flags;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_send_xchar(%s,%d)\n",
> - __FILE__, __LINE__, info->device_name, ch);
> -
> - if (mgslpc_paranoia_check(info, tty->name, "mgslpc_send_xchar"))
> - return;
> -
> - info->x_char = ch;
> - if (ch) {
> - spin_lock_irqsave(&info->lock, flags);
> - if (!info->tx_enabled)
> - tx_start(info, tty);
> - spin_unlock_irqrestore(&info->lock, flags);
> - }
> -}
> -
> -/* Signal remote device to throttle send data (our receive data)
> - */
> -static void mgslpc_throttle(struct tty_struct * tty)
> -{
> - MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
> - unsigned long flags;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_throttle(%s) entry\n",
> - __FILE__, __LINE__, info->device_name);
> -
> - if (mgslpc_paranoia_check(info, tty->name, "mgslpc_throttle"))
> - return;
> -
> - if (I_IXOFF(tty))
> - mgslpc_send_xchar(tty, STOP_CHAR(tty));
> -
> - if (C_CRTSCTS(tty)) {
> - spin_lock_irqsave(&info->lock, flags);
> - info->serial_signals &= ~SerialSignal_RTS;
> - set_signals(info);
> - spin_unlock_irqrestore(&info->lock, flags);
> - }
> -}
> -
> -/* Signal remote device to stop throttling send data (our receive data)
> - */
> -static void mgslpc_unthrottle(struct tty_struct * tty)
> -{
> - MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
> - unsigned long flags;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_unthrottle(%s) entry\n",
> - __FILE__, __LINE__, info->device_name);
> -
> - if (mgslpc_paranoia_check(info, tty->name, "mgslpc_unthrottle"))
> - return;
> -
> - if (I_IXOFF(tty)) {
> - if (info->x_char)
> - info->x_char = 0;
> - else
> - mgslpc_send_xchar(tty, START_CHAR(tty));
> - }
> -
> - if (C_CRTSCTS(tty)) {
> - spin_lock_irqsave(&info->lock, flags);
> - info->serial_signals |= SerialSignal_RTS;
> - set_signals(info);
> - spin_unlock_irqrestore(&info->lock, flags);
> - }
> -}
> -
> -/* get the current serial statistics
> - */
> -static int get_stats(MGSLPC_INFO * info, struct mgsl_icount __user *user_icount)
> -{
> - int err;
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("get_params(%s)\n", info->device_name);
> - if (!user_icount) {
> - memset(&info->icount, 0, sizeof(info->icount));
> - } else {
> - COPY_TO_USER(err, user_icount, &info->icount, sizeof(struct mgsl_icount));
> - if (err)
> - return -EFAULT;
> - }
> - return 0;
> -}
> -
> -/* get the current serial parameters
> - */
> -static int get_params(MGSLPC_INFO * info, MGSL_PARAMS __user *user_params)
> -{
> - int err;
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("get_params(%s)\n", info->device_name);
> - COPY_TO_USER(err,user_params, &info->params, sizeof(MGSL_PARAMS));
> - if (err)
> - return -EFAULT;
> - return 0;
> -}
> -
> -/* set the serial parameters
> - *
> - * Arguments:
> - *
> - * info pointer to device instance data
> - * new_params user buffer containing new serial params
> - *
> - * Returns: 0 if success, otherwise error code
> - */
> -static int set_params(MGSLPC_INFO * info, MGSL_PARAMS __user *new_params, struct tty_struct *tty)
> -{
> - unsigned long flags;
> - MGSL_PARAMS tmp_params;
> - int err;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):set_params %s\n", __FILE__,__LINE__,
> - info->device_name);
> - COPY_FROM_USER(err,&tmp_params, new_params, sizeof(MGSL_PARAMS));
> - if (err) {
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):set_params(%s) user buffer copy failed\n",
> - __FILE__, __LINE__, info->device_name);
> - return -EFAULT;
> - }
> -
> - spin_lock_irqsave(&info->lock, flags);
> - memcpy(&info->params,&tmp_params,sizeof(MGSL_PARAMS));
> - spin_unlock_irqrestore(&info->lock, flags);
> -
> - mgslpc_change_params(info, tty);
> -
> - return 0;
> -}
> -
> -static int get_txidle(MGSLPC_INFO * info, int __user *idle_mode)
> -{
> - int err;
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("get_txidle(%s)=%d\n", info->device_name, info->idle_mode);
> - COPY_TO_USER(err,idle_mode, &info->idle_mode, sizeof(int));
> - if (err)
> - return -EFAULT;
> - return 0;
> -}
> -
> -static int set_txidle(MGSLPC_INFO * info, int idle_mode)
> -{
> - unsigned long flags;
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("set_txidle(%s,%d)\n", info->device_name, idle_mode);
> - spin_lock_irqsave(&info->lock, flags);
> - info->idle_mode = idle_mode;
> - tx_set_idle(info);
> - spin_unlock_irqrestore(&info->lock, flags);
> - return 0;
> -}
> -
> -static int get_interface(MGSLPC_INFO * info, int __user *if_mode)
> -{
> - int err;
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("get_interface(%s)=%d\n", info->device_name, info->if_mode);
> - COPY_TO_USER(err,if_mode, &info->if_mode, sizeof(int));
> - if (err)
> - return -EFAULT;
> - return 0;
> -}
> -
> -static int set_interface(MGSLPC_INFO * info, int if_mode)
> -{
> - unsigned long flags;
> - unsigned char val;
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("set_interface(%s,%d)\n", info->device_name, if_mode);
> - spin_lock_irqsave(&info->lock, flags);
> - info->if_mode = if_mode;
> -
> - val = read_reg(info, PVR) & 0x0f;
> - switch (info->if_mode)
> - {
> - case MGSL_INTERFACE_RS232: val |= PVR_RS232; break;
> - case MGSL_INTERFACE_V35: val |= PVR_V35; break;
> - case MGSL_INTERFACE_RS422: val |= PVR_RS422; break;
> - }
> - write_reg(info, PVR, val);
> -
> - spin_unlock_irqrestore(&info->lock, flags);
> - return 0;
> -}
> -
> -static int set_txenable(MGSLPC_INFO * info, int enable, struct tty_struct *tty)
> -{
> - unsigned long flags;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("set_txenable(%s,%d)\n", info->device_name, enable);
> -
> - spin_lock_irqsave(&info->lock, flags);
> - if (enable) {
> - if (!info->tx_enabled)
> - tx_start(info, tty);
> - } else {
> - if (info->tx_enabled)
> - tx_stop(info);
> - }
> - spin_unlock_irqrestore(&info->lock, flags);
> - return 0;
> -}
> -
> -static int tx_abort(MGSLPC_INFO * info)
> -{
> - unsigned long flags;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("tx_abort(%s)\n", info->device_name);
> -
> - spin_lock_irqsave(&info->lock, flags);
> - if (info->tx_active && info->tx_count &&
> - info->params.mode == MGSL_MODE_HDLC) {
> - /* clear data count so FIFO is not filled on next IRQ.
> - * This results in underrun and abort transmission.
> - */
> - info->tx_count = info->tx_put = info->tx_get = 0;
> - info->tx_aborting = true;
> - }
> - spin_unlock_irqrestore(&info->lock, flags);
> - return 0;
> -}
> -
> -static int set_rxenable(MGSLPC_INFO * info, int enable)
> -{
> - unsigned long flags;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("set_rxenable(%s,%d)\n", info->device_name, enable);
> -
> - spin_lock_irqsave(&info->lock, flags);
> - if (enable) {
> - if (!info->rx_enabled)
> - rx_start(info);
> - } else {
> - if (info->rx_enabled)
> - rx_stop(info);
> - }
> - spin_unlock_irqrestore(&info->lock, flags);
> - return 0;
> -}
> -
> -/* wait for specified event to occur
> - *
> - * Arguments: info pointer to device instance data
> - * mask pointer to bitmask of events to wait for
> - * Return Value: 0 if successful and bit mask updated with
> - * of events triggerred,
> - * otherwise error code
> - */
> -static int wait_events(MGSLPC_INFO * info, int __user *mask_ptr)
> -{
> - unsigned long flags;
> - int s;
> - int rc=0;
> - struct mgsl_icount cprev, cnow;
> - int events;
> - int mask;
> - struct _input_signal_events oldsigs, newsigs;
> - DECLARE_WAITQUEUE(wait, current);
> -
> - COPY_FROM_USER(rc,&mask, mask_ptr, sizeof(int));
> - if (rc)
> - return -EFAULT;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("wait_events(%s,%d)\n", info->device_name, mask);
> -
> - spin_lock_irqsave(&info->lock, flags);
> -
> - /* return immediately if state matches requested events */
> - get_signals(info);
> - s = info->serial_signals;
> - events = mask &
> - ( ((s & SerialSignal_DSR) ? MgslEvent_DsrActive:MgslEvent_DsrInactive) +
> - ((s & SerialSignal_DCD) ? MgslEvent_DcdActive:MgslEvent_DcdInactive) +
> - ((s & SerialSignal_CTS) ? MgslEvent_CtsActive:MgslEvent_CtsInactive) +
> - ((s & SerialSignal_RI) ? MgslEvent_RiActive :MgslEvent_RiInactive) );
> - if (events) {
> - spin_unlock_irqrestore(&info->lock, flags);
> - goto exit;
> - }
> -
> - /* save current irq counts */
> - cprev = info->icount;
> - oldsigs = info->input_signal_events;
> -
> - if ((info->params.mode == MGSL_MODE_HDLC) &&
> - (mask & MgslEvent_ExitHuntMode))
> - irq_enable(info, CHA, IRQ_EXITHUNT);
> -
> - set_current_state(TASK_INTERRUPTIBLE);
> - add_wait_queue(&info->event_wait_q, &wait);
> -
> - spin_unlock_irqrestore(&info->lock, flags);
> -
> -
> - for(;;) {
> - schedule();
> - if (signal_pending(current)) {
> - rc = -ERESTARTSYS;
> - break;
> - }
> -
> - /* get current irq counts */
> - spin_lock_irqsave(&info->lock, flags);
> - cnow = info->icount;
> - newsigs = info->input_signal_events;
> - set_current_state(TASK_INTERRUPTIBLE);
> - spin_unlock_irqrestore(&info->lock, flags);
> -
> - /* if no change, wait aborted for some reason */
> - if (newsigs.dsr_up == oldsigs.dsr_up &&
> - newsigs.dsr_down == oldsigs.dsr_down &&
> - newsigs.dcd_up == oldsigs.dcd_up &&
> - newsigs.dcd_down == oldsigs.dcd_down &&
> - newsigs.cts_up == oldsigs.cts_up &&
> - newsigs.cts_down == oldsigs.cts_down &&
> - newsigs.ri_up == oldsigs.ri_up &&
> - newsigs.ri_down == oldsigs.ri_down &&
> - cnow.exithunt == cprev.exithunt &&
> - cnow.rxidle == cprev.rxidle) {
> - rc = -EIO;
> - break;
> - }
> -
> - events = mask &
> - ( (newsigs.dsr_up != oldsigs.dsr_up ? MgslEvent_DsrActive:0) +
> - (newsigs.dsr_down != oldsigs.dsr_down ? MgslEvent_DsrInactive:0) +
> - (newsigs.dcd_up != oldsigs.dcd_up ? MgslEvent_DcdActive:0) +
> - (newsigs.dcd_down != oldsigs.dcd_down ? MgslEvent_DcdInactive:0) +
> - (newsigs.cts_up != oldsigs.cts_up ? MgslEvent_CtsActive:0) +
> - (newsigs.cts_down != oldsigs.cts_down ? MgslEvent_CtsInactive:0) +
> - (newsigs.ri_up != oldsigs.ri_up ? MgslEvent_RiActive:0) +
> - (newsigs.ri_down != oldsigs.ri_down ? MgslEvent_RiInactive:0) +
> - (cnow.exithunt != cprev.exithunt ? MgslEvent_ExitHuntMode:0) +
> - (cnow.rxidle != cprev.rxidle ? MgslEvent_IdleReceived:0) );
> - if (events)
> - break;
> -
> - cprev = cnow;
> - oldsigs = newsigs;
> - }
> -
> - remove_wait_queue(&info->event_wait_q, &wait);
> - set_current_state(TASK_RUNNING);
> -
> - if (mask & MgslEvent_ExitHuntMode) {
> - spin_lock_irqsave(&info->lock, flags);
> - if (!waitqueue_active(&info->event_wait_q))
> - irq_disable(info, CHA, IRQ_EXITHUNT);
> - spin_unlock_irqrestore(&info->lock, flags);
> - }
> -exit:
> - if (rc == 0)
> - PUT_USER(rc, events, mask_ptr);
> - return rc;
> -}
> -
> -static int modem_input_wait(MGSLPC_INFO *info,int arg)
> -{
> - unsigned long flags;
> - int rc;
> - struct mgsl_icount cprev, cnow;
> - DECLARE_WAITQUEUE(wait, current);
> -
> - /* save current irq counts */
> - spin_lock_irqsave(&info->lock, flags);
> - cprev = info->icount;
> - add_wait_queue(&info->status_event_wait_q, &wait);
> - set_current_state(TASK_INTERRUPTIBLE);
> - spin_unlock_irqrestore(&info->lock, flags);
> -
> - for(;;) {
> - schedule();
> - if (signal_pending(current)) {
> - rc = -ERESTARTSYS;
> - break;
> - }
> -
> - /* get new irq counts */
> - spin_lock_irqsave(&info->lock, flags);
> - cnow = info->icount;
> - set_current_state(TASK_INTERRUPTIBLE);
> - spin_unlock_irqrestore(&info->lock, flags);
> -
> - /* if no change, wait aborted for some reason */
> - if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
> - cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) {
> - rc = -EIO;
> - break;
> - }
> -
> - /* check for change in caller specified modem input */
> - if ((arg & TIOCM_RNG && cnow.rng != cprev.rng) ||
> - (arg & TIOCM_DSR && cnow.dsr != cprev.dsr) ||
> - (arg & TIOCM_CD && cnow.dcd != cprev.dcd) ||
> - (arg & TIOCM_CTS && cnow.cts != cprev.cts)) {
> - rc = 0;
> - break;
> - }
> -
> - cprev = cnow;
> - }
> - remove_wait_queue(&info->status_event_wait_q, &wait);
> - set_current_state(TASK_RUNNING);
> - return rc;
> -}
> -
> -/* return the state of the serial control and status signals
> - */
> -static int tiocmget(struct tty_struct *tty)
> -{
> - MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
> - unsigned int result;
> - unsigned long flags;
> -
> - spin_lock_irqsave(&info->lock, flags);
> - get_signals(info);
> - spin_unlock_irqrestore(&info->lock, flags);
> -
> - result = ((info->serial_signals & SerialSignal_RTS) ? TIOCM_RTS:0) +
> - ((info->serial_signals & SerialSignal_DTR) ? TIOCM_DTR:0) +
> - ((info->serial_signals & SerialSignal_DCD) ? TIOCM_CAR:0) +
> - ((info->serial_signals & SerialSignal_RI) ? TIOCM_RNG:0) +
> - ((info->serial_signals & SerialSignal_DSR) ? TIOCM_DSR:0) +
> - ((info->serial_signals & SerialSignal_CTS) ? TIOCM_CTS:0);
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):%s tiocmget() value=%08X\n",
> - __FILE__, __LINE__, info->device_name, result);
> - return result;
> -}
> -
> -/* set modem control signals (DTR/RTS)
> - */
> -static int tiocmset(struct tty_struct *tty,
> - unsigned int set, unsigned int clear)
> -{
> - MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
> - unsigned long flags;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):%s tiocmset(%x,%x)\n",
> - __FILE__, __LINE__, info->device_name, set, clear);
> -
> - if (set & TIOCM_RTS)
> - info->serial_signals |= SerialSignal_RTS;
> - if (set & TIOCM_DTR)
> - info->serial_signals |= SerialSignal_DTR;
> - if (clear & TIOCM_RTS)
> - info->serial_signals &= ~SerialSignal_RTS;
> - if (clear & TIOCM_DTR)
> - info->serial_signals &= ~SerialSignal_DTR;
> -
> - spin_lock_irqsave(&info->lock, flags);
> - set_signals(info);
> - spin_unlock_irqrestore(&info->lock, flags);
> -
> - return 0;
> -}
> -
> -/* Set or clear transmit break condition
> - *
> - * Arguments: tty pointer to tty instance data
> - * break_state -1=set break condition, 0=clear
> - */
> -static int mgslpc_break(struct tty_struct *tty, int break_state)
> -{
> - MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data;
> - unsigned long flags;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_break(%s,%d)\n",
> - __FILE__, __LINE__, info->device_name, break_state);
> -
> - if (mgslpc_paranoia_check(info, tty->name, "mgslpc_break"))
> - return -EINVAL;
> -
> - spin_lock_irqsave(&info->lock, flags);
> - if (break_state == -1)
> - set_reg_bits(info, CHA+DAFO, BIT6);
> - else
> - clear_reg_bits(info, CHA+DAFO, BIT6);
> - spin_unlock_irqrestore(&info->lock, flags);
> - return 0;
> -}
> -
> -static int mgslpc_get_icount(struct tty_struct *tty,
> - struct serial_icounter_struct *icount)
> -{
> - MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data;
> - struct mgsl_icount cnow; /* kernel counter temps */
> - unsigned long flags;
> -
> - spin_lock_irqsave(&info->lock, flags);
> - cnow = info->icount;
> - spin_unlock_irqrestore(&info->lock, flags);
> -
> - icount->cts = cnow.cts;
> - icount->dsr = cnow.dsr;
> - icount->rng = cnow.rng;
> - icount->dcd = cnow.dcd;
> - icount->rx = cnow.rx;
> - icount->tx = cnow.tx;
> - icount->frame = cnow.frame;
> - icount->overrun = cnow.overrun;
> - icount->parity = cnow.parity;
> - icount->brk = cnow.brk;
> - icount->buf_overrun = cnow.buf_overrun;
> -
> - return 0;
> -}
> -
> -/* Service an IOCTL request
> - *
> - * Arguments:
> - *
> - * tty pointer to tty instance data
> - * cmd IOCTL command code
> - * arg command argument/context
> - *
> - * Return Value: 0 if success, otherwise error code
> - */
> -static int mgslpc_ioctl(struct tty_struct *tty,
> - unsigned int cmd, unsigned long arg)
> -{
> - MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data;
> - void __user *argp = (void __user *)arg;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_ioctl %s cmd=%08X\n", __FILE__, __LINE__,
> - info->device_name, cmd);
> -
> - if (mgslpc_paranoia_check(info, tty->name, "mgslpc_ioctl"))
> - return -ENODEV;
> -
> - if (cmd != TIOCMIWAIT) {
> - if (tty_io_error(tty))
> - return -EIO;
> - }
> -
> - switch (cmd) {
> - case MGSL_IOCGPARAMS:
> - return get_params(info, argp);
> - case MGSL_IOCSPARAMS:
> - return set_params(info, argp, tty);
> - case MGSL_IOCGTXIDLE:
> - return get_txidle(info, argp);
> - case MGSL_IOCSTXIDLE:
> - return set_txidle(info, (int)arg);
> - case MGSL_IOCGIF:
> - return get_interface(info, argp);
> - case MGSL_IOCSIF:
> - return set_interface(info,(int)arg);
> - case MGSL_IOCTXENABLE:
> - return set_txenable(info,(int)arg, tty);
> - case MGSL_IOCRXENABLE:
> - return set_rxenable(info,(int)arg);
> - case MGSL_IOCTXABORT:
> - return tx_abort(info);
> - case MGSL_IOCGSTATS:
> - return get_stats(info, argp);
> - case MGSL_IOCWAITEVENT:
> - return wait_events(info, argp);
> - case TIOCMIWAIT:
> - return modem_input_wait(info,(int)arg);
> - default:
> - return -ENOIOCTLCMD;
> - }
> - return 0;
> -}
> -
> -/* Set new termios settings
> - *
> - * Arguments:
> - *
> - * tty pointer to tty structure
> - * termios pointer to buffer to hold returned old termios
> - */
> -static void mgslpc_set_termios(struct tty_struct *tty,
> - const struct ktermios *old_termios)
> -{
> - MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data;
> - unsigned long flags;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_set_termios %s\n", __FILE__, __LINE__,
> - tty->driver->name);
> -
> - /* just return if nothing has changed */
> - if ((tty->termios.c_cflag == old_termios->c_cflag)
> - && (RELEVANT_IFLAG(tty->termios.c_iflag)
> - == RELEVANT_IFLAG(old_termios->c_iflag)))
> - return;
> -
> - mgslpc_change_params(info, tty);
> -
> - /* Handle transition to B0 status */
> - if ((old_termios->c_cflag & CBAUD) && !C_BAUD(tty)) {
> - info->serial_signals &= ~(SerialSignal_RTS | SerialSignal_DTR);
> - spin_lock_irqsave(&info->lock, flags);
> - set_signals(info);
> - spin_unlock_irqrestore(&info->lock, flags);
> - }
> -
> - /* Handle transition away from B0 status */
> - if (!(old_termios->c_cflag & CBAUD) && C_BAUD(tty)) {
> - info->serial_signals |= SerialSignal_DTR;
> - if (!C_CRTSCTS(tty) || !tty_throttled(tty))
> - info->serial_signals |= SerialSignal_RTS;
> - spin_lock_irqsave(&info->lock, flags);
> - set_signals(info);
> - spin_unlock_irqrestore(&info->lock, flags);
> - }
> -
> - /* Handle turning off CRTSCTS */
> - if (old_termios->c_cflag & CRTSCTS && !C_CRTSCTS(tty)) {
> - tty->hw_stopped = 0;
> - tx_release(tty);
> - }
> -}
> -
> -static void mgslpc_close(struct tty_struct *tty, struct file * filp)
> -{
> - MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data;
> - struct tty_port *port = &info->port;
> -
> - if (mgslpc_paranoia_check(info, tty->name, "mgslpc_close"))
> - return;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_close(%s) entry, count=%d\n",
> - __FILE__, __LINE__, info->device_name, port->count);
> -
> - if (tty_port_close_start(port, tty, filp) == 0)
> - goto cleanup;
> -
> - if (tty_port_initialized(port))
> - mgslpc_wait_until_sent(tty, info->timeout);
> -
> - mgslpc_flush_buffer(tty);
> -
> - tty_ldisc_flush(tty);
> - shutdown(info, tty);
> -
> - tty_port_close_end(port, tty);
> - tty_port_tty_set(port, NULL);
> -cleanup:
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_close(%s) exit, count=%d\n", __FILE__, __LINE__,
> - tty->driver->name, port->count);
> -}
> -
> -/* Wait until the transmitter is empty.
> - */
> -static void mgslpc_wait_until_sent(struct tty_struct *tty, int timeout)
> -{
> - MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data;
> - unsigned long orig_jiffies, char_time;
> -
> - if (!info)
> - return;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_wait_until_sent(%s) entry\n",
> - __FILE__, __LINE__, info->device_name);
> -
> - if (mgslpc_paranoia_check(info, tty->name, "mgslpc_wait_until_sent"))
> - return;
> -
> - if (!tty_port_initialized(&info->port))
> - goto exit;
> -
> - orig_jiffies = jiffies;
> -
> - /* Set check interval to 1/5 of estimated time to
> - * send a character, and make it at least 1. The check
> - * interval should also be less than the timeout.
> - * Note: use tight timings here to satisfy the NIST-PCTS.
> - */
> -
> - if (info->params.data_rate) {
> - char_time = info->timeout/(32 * 5);
> - if (!char_time)
> - char_time++;
> - } else
> - char_time = 1;
> -
> - if (timeout)
> - char_time = min_t(unsigned long, char_time, timeout);
> -
> - if (info->params.mode == MGSL_MODE_HDLC) {
> - while (info->tx_active) {
> - msleep_interruptible(jiffies_to_msecs(char_time));
> - if (signal_pending(current))
> - break;
> - if (timeout && time_after(jiffies, orig_jiffies + timeout))
> - break;
> - }
> - } else {
> - while ((info->tx_count || info->tx_active) &&
> - info->tx_enabled) {
> - msleep_interruptible(jiffies_to_msecs(char_time));
> - if (signal_pending(current))
> - break;
> - if (timeout && time_after(jiffies, orig_jiffies + timeout))
> - break;
> - }
> - }
> -
> -exit:
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_wait_until_sent(%s) exit\n",
> - __FILE__, __LINE__, info->device_name);
> -}
> -
> -/* Called by tty_hangup() when a hangup is signaled.
> - * This is the same as closing all open files for the port.
> - */
> -static void mgslpc_hangup(struct tty_struct *tty)
> -{
> - MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_hangup(%s)\n",
> - __FILE__, __LINE__, info->device_name);
> -
> - if (mgslpc_paranoia_check(info, tty->name, "mgslpc_hangup"))
> - return;
> -
> - mgslpc_flush_buffer(tty);
> - shutdown(info, tty);
> - tty_port_hangup(&info->port);
> -}
> -
> -static bool carrier_raised(struct tty_port *port)
> -{
> - MGSLPC_INFO *info = container_of(port, MGSLPC_INFO, port);
> - unsigned long flags;
> -
> - spin_lock_irqsave(&info->lock, flags);
> - get_signals(info);
> - spin_unlock_irqrestore(&info->lock, flags);
> -
> - return info->serial_signals & SerialSignal_DCD;
> -}
> -
> -static void dtr_rts(struct tty_port *port, bool active)
> -{
> - MGSLPC_INFO *info = container_of(port, MGSLPC_INFO, port);
> - unsigned long flags;
> -
> - spin_lock_irqsave(&info->lock, flags);
> - if (active)
> - info->serial_signals |= SerialSignal_RTS | SerialSignal_DTR;
> - else
> - info->serial_signals &= ~(SerialSignal_RTS | SerialSignal_DTR);
> - set_signals(info);
> - spin_unlock_irqrestore(&info->lock, flags);
> -}
> -
> -
> -static int mgslpc_open(struct tty_struct *tty, struct file * filp)
> -{
> - MGSLPC_INFO *info;
> - struct tty_port *port;
> - int retval, line;
> - unsigned long flags;
> -
> - /* verify range of specified line number */
> - line = tty->index;
> - if (line >= mgslpc_device_count) {
> - printk("%s(%d):mgslpc_open with invalid line #%d.\n",
> - __FILE__, __LINE__, line);
> - return -ENODEV;
> - }
> -
> - /* find the info structure for the specified line */
> - info = mgslpc_device_list;
> - while(info && info->line != line)
> - info = info->next_device;
> - if (mgslpc_paranoia_check(info, tty->name, "mgslpc_open"))
> - return -ENODEV;
> -
> - port = &info->port;
> - tty->driver_data = info;
> - tty_port_tty_set(port, tty);
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_open(%s), old ref count = %d\n",
> - __FILE__, __LINE__, tty->driver->name, port->count);
> -
> - spin_lock_irqsave(&info->netlock, flags);
> - if (info->netcount) {
> - retval = -EBUSY;
> - spin_unlock_irqrestore(&info->netlock, flags);
> - goto cleanup;
> - }
> - spin_lock(&port->lock);
> - port->count++;
> - spin_unlock(&port->lock);
> - spin_unlock_irqrestore(&info->netlock, flags);
> -
> - if (port->count == 1) {
> - /* 1st open on this device, init hardware */
> - retval = startup(info, tty);
> - if (retval < 0)
> - goto cleanup;
> - }
> -
> - retval = tty_port_block_til_ready(&info->port, tty, filp);
> - if (retval) {
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):block_til_ready(%s) returned %d\n",
> - __FILE__, __LINE__, info->device_name, retval);
> - goto cleanup;
> - }
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):mgslpc_open(%s) success\n",
> - __FILE__, __LINE__, info->device_name);
> - retval = 0;
> -
> -cleanup:
> - return retval;
> -}
> -
> -/*
> - * /proc fs routines....
> - */
> -
> -static inline void line_info(struct seq_file *m, MGSLPC_INFO *info)
> -{
> - char stat_buf[30];
> - unsigned long flags;
> -
> - seq_printf(m, "%s:io:%04X irq:%d",
> - info->device_name, info->io_base, info->irq_level);
> -
> - /* output current serial signal states */
> - spin_lock_irqsave(&info->lock, flags);
> - get_signals(info);
> - spin_unlock_irqrestore(&info->lock, flags);
> -
> - stat_buf[0] = 0;
> - stat_buf[1] = 0;
> - if (info->serial_signals & SerialSignal_RTS)
> - strcat(stat_buf, "|RTS");
> - if (info->serial_signals & SerialSignal_CTS)
> - strcat(stat_buf, "|CTS");
> - if (info->serial_signals & SerialSignal_DTR)
> - strcat(stat_buf, "|DTR");
> - if (info->serial_signals & SerialSignal_DSR)
> - strcat(stat_buf, "|DSR");
> - if (info->serial_signals & SerialSignal_DCD)
> - strcat(stat_buf, "|CD");
> - if (info->serial_signals & SerialSignal_RI)
> - strcat(stat_buf, "|RI");
> -
> - if (info->params.mode == MGSL_MODE_HDLC) {
> - seq_printf(m, " HDLC txok:%d rxok:%d",
> - info->icount.txok, info->icount.rxok);
> - if (info->icount.txunder)
> - seq_printf(m, " txunder:%d", info->icount.txunder);
> - if (info->icount.txabort)
> - seq_printf(m, " txabort:%d", info->icount.txabort);
> - if (info->icount.rxshort)
> - seq_printf(m, " rxshort:%d", info->icount.rxshort);
> - if (info->icount.rxlong)
> - seq_printf(m, " rxlong:%d", info->icount.rxlong);
> - if (info->icount.rxover)
> - seq_printf(m, " rxover:%d", info->icount.rxover);
> - if (info->icount.rxcrc)
> - seq_printf(m, " rxcrc:%d", info->icount.rxcrc);
> - } else {
> - seq_printf(m, " ASYNC tx:%d rx:%d",
> - info->icount.tx, info->icount.rx);
> - if (info->icount.frame)
> - seq_printf(m, " fe:%d", info->icount.frame);
> - if (info->icount.parity)
> - seq_printf(m, " pe:%d", info->icount.parity);
> - if (info->icount.brk)
> - seq_printf(m, " brk:%d", info->icount.brk);
> - if (info->icount.overrun)
> - seq_printf(m, " oe:%d", info->icount.overrun);
> - }
> -
> - /* Append serial signal status to end */
> - seq_printf(m, " %s\n", stat_buf+1);
> -
> - seq_printf(m, "txactive=%d bh_req=%d bh_run=%d pending_bh=%x\n",
> - info->tx_active,info->bh_requested,info->bh_running,
> - info->pending_bh);
> -}
> -
> -/* Called to print information about devices
> - */
> -static int mgslpc_proc_show(struct seq_file *m, void *v)
> -{
> - MGSLPC_INFO *info;
> -
> - seq_printf(m, "synclink driver:%s\n", driver_version);
> -
> - info = mgslpc_device_list;
> - while (info) {
> - line_info(m, info);
> - info = info->next_device;
> - }
> - return 0;
> -}
> -
> -static int rx_alloc_buffers(MGSLPC_INFO *info)
> -{
> - /* each buffer has header and data */
> - info->rx_buf_size = sizeof(RXBUF) + info->max_frame_size;
> -
> - /* calculate total allocation size for 8 buffers */
> - info->rx_buf_total_size = info->rx_buf_size * 8;
> -
> - /* limit total allocated memory */
> - if (info->rx_buf_total_size > 0x10000)
> - info->rx_buf_total_size = 0x10000;
> -
> - /* calculate number of buffers */
> - info->rx_buf_count = info->rx_buf_total_size / info->rx_buf_size;
> -
> - info->rx_buf = kmalloc(info->rx_buf_total_size, GFP_KERNEL);
> - if (info->rx_buf == NULL)
> - return -ENOMEM;
> -
> - rx_reset_buffers(info);
> - return 0;
> -}
> -
> -static void rx_free_buffers(MGSLPC_INFO *info)
> -{
> - kfree(info->rx_buf);
> - info->rx_buf = NULL;
> -}
> -
> -static int claim_resources(MGSLPC_INFO *info)
> -{
> - if (rx_alloc_buffers(info) < 0) {
> - printk("Can't allocate rx buffer %s\n", info->device_name);
> - release_resources(info);
> - return -ENODEV;
> - }
> - return 0;
> -}
> -
> -static void release_resources(MGSLPC_INFO *info)
> -{
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("release_resources(%s)\n", info->device_name);
> - rx_free_buffers(info);
> -}
> -
> -/* Add the specified device instance data structure to the
> - * global linked list of devices and increment the device count.
> - *
> - * Arguments: info pointer to device instance data
> - */
> -static int mgslpc_add_device(MGSLPC_INFO *info)
> -{
> - MGSLPC_INFO *current_dev = NULL;
> - struct device *tty_dev;
> - int ret;
> -
> - info->next_device = NULL;
> - info->line = mgslpc_device_count;
> - sprintf(info->device_name,"ttySLP%d",info->line);
> -
> - if (info->line < MAX_DEVICE_COUNT) {
> - if (maxframe[info->line])
> - info->max_frame_size = maxframe[info->line];
> - }
> -
> - mgslpc_device_count++;
> -
> - if (!mgslpc_device_list)
> - mgslpc_device_list = info;
> - else {
> - current_dev = mgslpc_device_list;
> - while (current_dev->next_device)
> - current_dev = current_dev->next_device;
> - current_dev->next_device = info;
> - }
> -
> - if (info->max_frame_size < 4096)
> - info->max_frame_size = 4096;
> - else if (info->max_frame_size > 65535)
> - info->max_frame_size = 65535;
> -
> - printk("SyncLink PC Card %s:IO=%04X IRQ=%d\n",
> - info->device_name, info->io_base, info->irq_level);
> -
> -#if SYNCLINK_GENERIC_HDLC
> - ret = hdlcdev_init(info);
> - if (ret != 0)
> - goto failed;
> -#endif
> -
> - tty_dev = tty_port_register_device(&info->port, serial_driver, info->line,
> - &info->p_dev->dev);
> - if (IS_ERR(tty_dev)) {
> - ret = PTR_ERR(tty_dev);
> -#if SYNCLINK_GENERIC_HDLC
> - hdlcdev_exit(info);
> -#endif
> - goto failed;
> - }
> -
> - return 0;
> -
> -failed:
> - if (current_dev)
> - current_dev->next_device = NULL;
> - else
> - mgslpc_device_list = NULL;
> - mgslpc_device_count--;
> - return ret;
> -}
> -
> -static void mgslpc_remove_device(MGSLPC_INFO *remove_info)
> -{
> - MGSLPC_INFO *info = mgslpc_device_list;
> - MGSLPC_INFO *last = NULL;
> -
> - while(info) {
> - if (info == remove_info) {
> - if (last)
> - last->next_device = info->next_device;
> - else
> - mgslpc_device_list = info->next_device;
> - tty_unregister_device(serial_driver, info->line);
> -#if SYNCLINK_GENERIC_HDLC
> - hdlcdev_exit(info);
> -#endif
> - release_resources(info);
> - tty_port_destroy(&info->port);
> - kfree(info);
> - mgslpc_device_count--;
> - return;
> - }
> - last = info;
> - info = info->next_device;
> - }
> -}
> -
> -static const struct pcmcia_device_id mgslpc_ids[] = {
> - PCMCIA_DEVICE_MANF_CARD(0x02c5, 0x0050),
> - PCMCIA_DEVICE_NULL
> -};
> -MODULE_DEVICE_TABLE(pcmcia, mgslpc_ids);
> -
> -static struct pcmcia_driver mgslpc_driver = {
> - .owner = THIS_MODULE,
> - .name = "synclink_cs",
> - .probe = mgslpc_probe,
> - .remove = mgslpc_detach,
> - .id_table = mgslpc_ids,
> - .suspend = mgslpc_suspend,
> - .resume = mgslpc_resume,
> -};
> -
> -static const struct tty_operations mgslpc_ops = {
> - .open = mgslpc_open,
> - .close = mgslpc_close,
> - .write = mgslpc_write,
> - .put_char = mgslpc_put_char,
> - .flush_chars = mgslpc_flush_chars,
> - .write_room = mgslpc_write_room,
> - .chars_in_buffer = mgslpc_chars_in_buffer,
> - .flush_buffer = mgslpc_flush_buffer,
> - .ioctl = mgslpc_ioctl,
> - .throttle = mgslpc_throttle,
> - .unthrottle = mgslpc_unthrottle,
> - .send_xchar = mgslpc_send_xchar,
> - .break_ctl = mgslpc_break,
> - .wait_until_sent = mgslpc_wait_until_sent,
> - .set_termios = mgslpc_set_termios,
> - .stop = tx_pause,
> - .start = tx_release,
> - .hangup = mgslpc_hangup,
> - .tiocmget = tiocmget,
> - .tiocmset = tiocmset,
> - .get_icount = mgslpc_get_icount,
> - .proc_show = mgslpc_proc_show,
> -};
> -
> -static int __init synclink_cs_init(void)
> -{
> - int rc;
> -
> - if (break_on_load) {
> - mgslpc_get_text_ptr();
> - BREAKPOINT();
> - }
> -
> - serial_driver = tty_alloc_driver(MAX_DEVICE_COUNT,
> - TTY_DRIVER_REAL_RAW |
> - TTY_DRIVER_DYNAMIC_DEV);
> - if (IS_ERR(serial_driver)) {
> - rc = PTR_ERR(serial_driver);
> - goto err;
> - }
> -
> - /* Initialize the tty_driver structure */
> - serial_driver->driver_name = "synclink_cs";
> - serial_driver->name = "ttySLP";
> - serial_driver->major = ttymajor;
> - serial_driver->minor_start = 64;
> - serial_driver->type = TTY_DRIVER_TYPE_SERIAL;
> - serial_driver->subtype = SERIAL_TYPE_NORMAL;
> - serial_driver->init_termios = tty_std_termios;
> - serial_driver->init_termios.c_cflag =
> - B9600 | CS8 | CREAD | HUPCL | CLOCAL;
> - tty_set_operations(serial_driver, &mgslpc_ops);
> -
> - rc = tty_register_driver(serial_driver);
> - if (rc < 0) {
> - printk(KERN_ERR "%s(%d):Couldn't register serial driver\n",
> - __FILE__, __LINE__);
> - goto err_put_tty;
> - }
> -
> - rc = pcmcia_register_driver(&mgslpc_driver);
> - if (rc < 0)
> - goto err_unreg_tty;
> -
> - printk(KERN_INFO "%s %s, tty major#%d\n", driver_name, driver_version,
> - serial_driver->major);
> -
> - return 0;
> -err_unreg_tty:
> - tty_unregister_driver(serial_driver);
> -err_put_tty:
> - tty_driver_kref_put(serial_driver);
> -err:
> - return rc;
> -}
> -
> -static void __exit synclink_cs_exit(void)
> -{
> - pcmcia_unregister_driver(&mgslpc_driver);
> - tty_unregister_driver(serial_driver);
> - tty_driver_kref_put(serial_driver);
> -}
> -
> -module_init(synclink_cs_init);
> -module_exit(synclink_cs_exit);
> -
> -static void mgslpc_set_rate(MGSLPC_INFO *info, unsigned char channel, unsigned int rate)
> -{
> - unsigned int M, N;
> - unsigned char val;
> -
> - /* note:standard BRG mode is broken in V3.2 chip
> - * so enhanced mode is always used
> - */
> -
> - if (rate) {
> - N = 3686400 / rate;
> - if (!N)
> - N = 1;
> - N >>= 1;
> - for (M = 1; N > 64 && M < 16; M++)
> - N >>= 1;
> - N--;
> -
> - /* BGR[5..0] = N
> - * BGR[9..6] = M
> - * BGR[7..0] contained in BGR register
> - * BGR[9..8] contained in CCR2[7..6]
> - * divisor = (N+1)*2^M
> - *
> - * Note: M *must* not be zero (causes asymetric duty cycle)
> - */
> - write_reg(info, (unsigned char) (channel + BGR),
> - (unsigned char) ((M << 6) + N));
> - val = read_reg(info, (unsigned char) (channel + CCR2)) & 0x3f;
> - val |= ((M << 4) & 0xc0);
> - write_reg(info, (unsigned char) (channel + CCR2), val);
> - }
> -}
> -
> -/* Enabled the AUX clock output at the specified frequency.
> - */
> -static void enable_auxclk(MGSLPC_INFO *info)
> -{
> - unsigned char val;
> -
> - /* MODE
> - *
> - * 07..06 MDS[1..0] 10 = transparent HDLC mode
> - * 05 ADM Address Mode, 0 = no addr recognition
> - * 04 TMD Timer Mode, 0 = external
> - * 03 RAC Receiver Active, 0 = inactive
> - * 02 RTS 0=RTS active during xmit, 1=RTS always active
> - * 01 TRS Timer Resolution, 1=512
> - * 00 TLP Test Loop, 0 = no loop
> - *
> - * 1000 0010
> - */
> - val = 0x82;
> -
> - /* channel B RTS is used to enable AUXCLK driver on SP505 */
> - if (info->params.mode == MGSL_MODE_HDLC && info->params.clock_speed)
> - val |= BIT2;
> - write_reg(info, CHB + MODE, val);
> -
> - /* CCR0
> - *
> - * 07 PU Power Up, 1=active, 0=power down
> - * 06 MCE Master Clock Enable, 1=enabled
> - * 05 Reserved, 0
> - * 04..02 SC[2..0] Encoding
> - * 01..00 SM[1..0] Serial Mode, 00=HDLC
> - *
> - * 11000000
> - */
> - write_reg(info, CHB + CCR0, 0xc0);
> -
> - /* CCR1
> - *
> - * 07 SFLG Shared Flag, 0 = disable shared flags
> - * 06 GALP Go Active On Loop, 0 = not used
> - * 05 GLP Go On Loop, 0 = not used
> - * 04 ODS Output Driver Select, 1=TxD is push-pull output
> - * 03 ITF Interframe Time Fill, 0=mark, 1=flag
> - * 02..00 CM[2..0] Clock Mode
> - *
> - * 0001 0111
> - */
> - write_reg(info, CHB + CCR1, 0x17);
> -
> - /* CCR2 (Channel B)
> - *
> - * 07..06 BGR[9..8] Baud rate bits 9..8
> - * 05 BDF Baud rate divisor factor, 0=1, 1=BGR value
> - * 04 SSEL Clock source select, 1=submode b
> - * 03 TOE 0=TxCLK is input, 1=TxCLK is output
> - * 02 RWX Read/Write Exchange 0=disabled
> - * 01 C32, CRC select, 0=CRC-16, 1=CRC-32
> - * 00 DIV, data inversion 0=disabled, 1=enabled
> - *
> - * 0011 1000
> - */
> - if (info->params.mode == MGSL_MODE_HDLC && info->params.clock_speed)
> - write_reg(info, CHB + CCR2, 0x38);
> - else
> - write_reg(info, CHB + CCR2, 0x30);
> -
> - /* CCR4
> - *
> - * 07 MCK4 Master Clock Divide by 4, 1=enabled
> - * 06 EBRG Enhanced Baud Rate Generator Mode, 1=enabled
> - * 05 TST1 Test Pin, 0=normal operation
> - * 04 ICD Ivert Carrier Detect, 1=enabled (active low)
> - * 03..02 Reserved, must be 0
> - * 01..00 RFT[1..0] RxFIFO Threshold 00=32 bytes
> - *
> - * 0101 0000
> - */
> - write_reg(info, CHB + CCR4, 0x50);
> -
> - /* if auxclk not enabled, set internal BRG so
> - * CTS transitions can be detected (requires TxC)
> - */
> - if (info->params.mode == MGSL_MODE_HDLC && info->params.clock_speed)
> - mgslpc_set_rate(info, CHB, info->params.clock_speed);
> - else
> - mgslpc_set_rate(info, CHB, 921600);
> -}
> -
> -static void loopback_enable(MGSLPC_INFO *info)
> -{
> - unsigned char val;
> -
> - /* CCR1:02..00 CM[2..0] Clock Mode = 111 (clock mode 7) */
> - val = read_reg(info, CHA + CCR1) | (BIT2 | BIT1 | BIT0);
> - write_reg(info, CHA + CCR1, val);
> -
> - /* CCR2:04 SSEL Clock source select, 1=submode b */
> - val = read_reg(info, CHA + CCR2) | (BIT4 | BIT5);
> - write_reg(info, CHA + CCR2, val);
> -
> - /* set LinkSpeed if available, otherwise default to 2Mbps */
> - if (info->params.clock_speed)
> - mgslpc_set_rate(info, CHA, info->params.clock_speed);
> - else
> - mgslpc_set_rate(info, CHA, 1843200);
> -
> - /* MODE:00 TLP Test Loop, 1=loopback enabled */
> - val = read_reg(info, CHA + MODE) | BIT0;
> - write_reg(info, CHA + MODE, val);
> -}
> -
> -static void hdlc_mode(MGSLPC_INFO *info)
> -{
> - unsigned char val;
> - unsigned char clkmode, clksubmode;
> -
> - /* disable all interrupts */
> - irq_disable(info, CHA, 0xffff);
> - irq_disable(info, CHB, 0xffff);
> - port_irq_disable(info, 0xff);
> -
> - /* assume clock mode 0a, rcv=RxC xmt=TxC */
> - clkmode = clksubmode = 0;
> - if (info->params.flags & HDLC_FLAG_RXC_DPLL
> - && info->params.flags & HDLC_FLAG_TXC_DPLL) {
> - /* clock mode 7a, rcv = DPLL, xmt = DPLL */
> - clkmode = 7;
> - } else if (info->params.flags & HDLC_FLAG_RXC_BRG
> - && info->params.flags & HDLC_FLAG_TXC_BRG) {
> - /* clock mode 7b, rcv = BRG, xmt = BRG */
> - clkmode = 7;
> - clksubmode = 1;
> - } else if (info->params.flags & HDLC_FLAG_RXC_DPLL) {
> - if (info->params.flags & HDLC_FLAG_TXC_BRG) {
> - /* clock mode 6b, rcv = DPLL, xmt = BRG/16 */
> - clkmode = 6;
> - clksubmode = 1;
> - } else {
> - /* clock mode 6a, rcv = DPLL, xmt = TxC */
> - clkmode = 6;
> - }
> - } else if (info->params.flags & HDLC_FLAG_TXC_BRG) {
> - /* clock mode 0b, rcv = RxC, xmt = BRG */
> - clksubmode = 1;
> - }
> -
> - /* MODE
> - *
> - * 07..06 MDS[1..0] 10 = transparent HDLC mode
> - * 05 ADM Address Mode, 0 = no addr recognition
> - * 04 TMD Timer Mode, 0 = external
> - * 03 RAC Receiver Active, 0 = inactive
> - * 02 RTS 0=RTS active during xmit, 1=RTS always active
> - * 01 TRS Timer Resolution, 1=512
> - * 00 TLP Test Loop, 0 = no loop
> - *
> - * 1000 0010
> - */
> - val = 0x82;
> - if (info->params.loopback)
> - val |= BIT0;
> -
> - /* preserve RTS state */
> - if (info->serial_signals & SerialSignal_RTS)
> - val |= BIT2;
> - write_reg(info, CHA + MODE, val);
> -
> - /* CCR0
> - *
> - * 07 PU Power Up, 1=active, 0=power down
> - * 06 MCE Master Clock Enable, 1=enabled
> - * 05 Reserved, 0
> - * 04..02 SC[2..0] Encoding
> - * 01..00 SM[1..0] Serial Mode, 00=HDLC
> - *
> - * 11000000
> - */
> - val = 0xc0;
> - switch (info->params.encoding)
> - {
> - case HDLC_ENCODING_NRZI:
> - val |= BIT3;
> - break;
> - case HDLC_ENCODING_BIPHASE_SPACE:
> - val |= BIT4;
> - break; // FM0
> - case HDLC_ENCODING_BIPHASE_MARK:
> - val |= BIT4 | BIT2;
> - break; // FM1
> - case HDLC_ENCODING_BIPHASE_LEVEL:
> - val |= BIT4 | BIT3;
> - break; // Manchester
> - }
> - write_reg(info, CHA + CCR0, val);
> -
> - /* CCR1
> - *
> - * 07 SFLG Shared Flag, 0 = disable shared flags
> - * 06 GALP Go Active On Loop, 0 = not used
> - * 05 GLP Go On Loop, 0 = not used
> - * 04 ODS Output Driver Select, 1=TxD is push-pull output
> - * 03 ITF Interframe Time Fill, 0=mark, 1=flag
> - * 02..00 CM[2..0] Clock Mode
> - *
> - * 0001 0000
> - */
> - val = 0x10 + clkmode;
> - write_reg(info, CHA + CCR1, val);
> -
> - /* CCR2
> - *
> - * 07..06 BGR[9..8] Baud rate bits 9..8
> - * 05 BDF Baud rate divisor factor, 0=1, 1=BGR value
> - * 04 SSEL Clock source select, 1=submode b
> - * 03 TOE 0=TxCLK is input, 0=TxCLK is input
> - * 02 RWX Read/Write Exchange 0=disabled
> - * 01 C32, CRC select, 0=CRC-16, 1=CRC-32
> - * 00 DIV, data inversion 0=disabled, 1=enabled
> - *
> - * 0000 0000
> - */
> - val = 0x00;
> - if (clkmode == 2 || clkmode == 3 || clkmode == 6
> - || clkmode == 7 || (clkmode == 0 && clksubmode == 1))
> - val |= BIT5;
> - if (clksubmode)
> - val |= BIT4;
> - if (info->params.crc_type == HDLC_CRC_32_CCITT)
> - val |= BIT1;
> - if (info->params.encoding == HDLC_ENCODING_NRZB)
> - val |= BIT0;
> - write_reg(info, CHA + CCR2, val);
> -
> - /* CCR3
> - *
> - * 07..06 PRE[1..0] Preamble count 00=1, 01=2, 10=4, 11=8
> - * 05 EPT Enable preamble transmission, 1=enabled
> - * 04 RADD Receive address pushed to FIFO, 0=disabled
> - * 03 CRL CRC Reset Level, 0=FFFF
> - * 02 RCRC Rx CRC 0=On 1=Off
> - * 01 TCRC Tx CRC 0=On 1=Off
> - * 00 PSD DPLL Phase Shift Disable
> - *
> - * 0000 0000
> - */
> - val = 0x00;
> - if (info->params.crc_type == HDLC_CRC_NONE)
> - val |= BIT2 | BIT1;
> - if (info->params.preamble != HDLC_PREAMBLE_PATTERN_NONE)
> - val |= BIT5;
> - switch (info->params.preamble_length)
> - {
> - case HDLC_PREAMBLE_LENGTH_16BITS:
> - val |= BIT6;
> - break;
> - case HDLC_PREAMBLE_LENGTH_32BITS:
> - val |= BIT6;
> - break;
> - case HDLC_PREAMBLE_LENGTH_64BITS:
> - val |= BIT7 | BIT6;
> - break;
> - }
> - write_reg(info, CHA + CCR3, val);
> -
> - /* PRE - Preamble pattern */
> - val = 0;
> - switch (info->params.preamble)
> - {
> - case HDLC_PREAMBLE_PATTERN_FLAGS: val = 0x7e; break;
> - case HDLC_PREAMBLE_PATTERN_10: val = 0xaa; break;
> - case HDLC_PREAMBLE_PATTERN_01: val = 0x55; break;
> - case HDLC_PREAMBLE_PATTERN_ONES: val = 0xff; break;
> - }
> - write_reg(info, CHA + PRE, val);
> -
> - /* CCR4
> - *
> - * 07 MCK4 Master Clock Divide by 4, 1=enabled
> - * 06 EBRG Enhanced Baud Rate Generator Mode, 1=enabled
> - * 05 TST1 Test Pin, 0=normal operation
> - * 04 ICD Ivert Carrier Detect, 1=enabled (active low)
> - * 03..02 Reserved, must be 0
> - * 01..00 RFT[1..0] RxFIFO Threshold 00=32 bytes
> - *
> - * 0101 0000
> - */
> - val = 0x50;
> - write_reg(info, CHA + CCR4, val);
> - if (info->params.flags & HDLC_FLAG_RXC_DPLL)
> - mgslpc_set_rate(info, CHA, info->params.clock_speed * 16);
> - else
> - mgslpc_set_rate(info, CHA, info->params.clock_speed);
> -
> - /* RLCR Receive length check register
> - *
> - * 7 1=enable receive length check
> - * 6..0 Max frame length = (RL + 1) * 32
> - */
> - write_reg(info, CHA + RLCR, 0);
> -
> - /* XBCH Transmit Byte Count High
> - *
> - * 07 DMA mode, 0 = interrupt driven
> - * 06 NRM, 0=ABM (ignored)
> - * 05 CAS Carrier Auto Start
> - * 04 XC Transmit Continuously (ignored)
> - * 03..00 XBC[10..8] Transmit byte count bits 10..8
> - *
> - * 0000 0000
> - */
> - val = 0x00;
> - if (info->params.flags & HDLC_FLAG_AUTO_DCD)
> - val |= BIT5;
> - write_reg(info, CHA + XBCH, val);
> - enable_auxclk(info);
> - if (info->params.loopback || info->testing_irq)
> - loopback_enable(info);
> - if (info->params.flags & HDLC_FLAG_AUTO_CTS)
> - {
> - irq_enable(info, CHB, IRQ_CTS);
> - /* PVR[3] 1=AUTO CTS active */
> - set_reg_bits(info, CHA + PVR, BIT3);
> - } else
> - clear_reg_bits(info, CHA + PVR, BIT3);
> -
> - irq_enable(info, CHA,
> - IRQ_RXEOM | IRQ_RXFIFO | IRQ_ALLSENT |
> - IRQ_UNDERRUN | IRQ_TXFIFO);
> - issue_command(info, CHA, CMD_TXRESET + CMD_RXRESET);
> - wait_command_complete(info, CHA);
> - read_reg16(info, CHA + ISR); /* clear pending IRQs */
> -
> - /* Master clock mode enabled above to allow reset commands
> - * to complete even if no data clocks are present.
> - *
> - * Disable master clock mode for normal communications because
> - * V3.2 of the ESCC2 has a bug that prevents the transmit all sent
> - * IRQ when in master clock mode.
> - *
> - * Leave master clock mode enabled for IRQ test because the
> - * timer IRQ used by the test can only happen in master clock mode.
> - */
> - if (!info->testing_irq)
> - clear_reg_bits(info, CHA + CCR0, BIT6);
> -
> - tx_set_idle(info);
> -
> - tx_stop(info);
> - rx_stop(info);
> -}
> -
> -static void rx_stop(MGSLPC_INFO *info)
> -{
> - if (debug_level >= DEBUG_LEVEL_ISR)
> - printk("%s(%d):rx_stop(%s)\n",
> - __FILE__, __LINE__, info->device_name);
> -
> - /* MODE:03 RAC Receiver Active, 0=inactive */
> - clear_reg_bits(info, CHA + MODE, BIT3);
> -
> - info->rx_enabled = false;
> - info->rx_overflow = false;
> -}
> -
> -static void rx_start(MGSLPC_INFO *info)
> -{
> - if (debug_level >= DEBUG_LEVEL_ISR)
> - printk("%s(%d):rx_start(%s)\n",
> - __FILE__, __LINE__, info->device_name);
> -
> - rx_reset_buffers(info);
> - info->rx_enabled = false;
> - info->rx_overflow = false;
> -
> - /* MODE:03 RAC Receiver Active, 1=active */
> - set_reg_bits(info, CHA + MODE, BIT3);
> -
> - info->rx_enabled = true;
> -}
> -
> -static void tx_start(MGSLPC_INFO *info, struct tty_struct *tty)
> -{
> - if (debug_level >= DEBUG_LEVEL_ISR)
> - printk("%s(%d):tx_start(%s)\n",
> - __FILE__, __LINE__, info->device_name);
> -
> - if (info->tx_count) {
> - /* If auto RTS enabled and RTS is inactive, then assert */
> - /* RTS and set a flag indicating that the driver should */
> - /* negate RTS when the transmission completes. */
> - info->drop_rts_on_tx_done = false;
> -
> - if (info->params.flags & HDLC_FLAG_AUTO_RTS) {
> - get_signals(info);
> - if (!(info->serial_signals & SerialSignal_RTS)) {
> - info->serial_signals |= SerialSignal_RTS;
> - set_signals(info);
> - info->drop_rts_on_tx_done = true;
> - }
> - }
> -
> - if (info->params.mode == MGSL_MODE_ASYNC) {
> - if (!info->tx_active) {
> - info->tx_active = true;
> - tx_ready(info, tty);
> - }
> - } else {
> - info->tx_active = true;
> - tx_ready(info, tty);
> - mod_timer(&info->tx_timer, jiffies +
> - msecs_to_jiffies(5000));
> - }
> - }
> -
> - if (!info->tx_enabled)
> - info->tx_enabled = true;
> -}
> -
> -static void tx_stop(MGSLPC_INFO *info)
> -{
> - if (debug_level >= DEBUG_LEVEL_ISR)
> - printk("%s(%d):tx_stop(%s)\n",
> - __FILE__, __LINE__, info->device_name);
> -
> - del_timer(&info->tx_timer);
> -
> - info->tx_enabled = false;
> - info->tx_active = false;
> -}
> -
> -/* Reset the adapter to a known state and prepare it for further use.
> - */
> -static void reset_device(MGSLPC_INFO *info)
> -{
> - /* power up both channels (set BIT7) */
> - write_reg(info, CHA + CCR0, 0x80);
> - write_reg(info, CHB + CCR0, 0x80);
> - write_reg(info, CHA + MODE, 0);
> - write_reg(info, CHB + MODE, 0);
> -
> - /* disable all interrupts */
> - irq_disable(info, CHA, 0xffff);
> - irq_disable(info, CHB, 0xffff);
> - port_irq_disable(info, 0xff);
> -
> - /* PCR Port Configuration Register
> - *
> - * 07..04 DEC[3..0] Serial I/F select outputs
> - * 03 output, 1=AUTO CTS control enabled
> - * 02 RI Ring Indicator input 0=active
> - * 01 DSR input 0=active
> - * 00 DTR output 0=active
> - *
> - * 0000 0110
> - */
> - write_reg(info, PCR, 0x06);
> -
> - /* PVR Port Value Register
> - *
> - * 07..04 DEC[3..0] Serial I/F select (0000=disabled)
> - * 03 AUTO CTS output 1=enabled
> - * 02 RI Ring Indicator input
> - * 01 DSR input
> - * 00 DTR output (1=inactive)
> - *
> - * 0000 0001
> - */
> -// write_reg(info, PVR, PVR_DTR);
> -
> - /* IPC Interrupt Port Configuration
> - *
> - * 07 VIS 1=Masked interrupts visible
> - * 06..05 Reserved, 0
> - * 04..03 SLA Slave address, 00 ignored
> - * 02 CASM Cascading Mode, 1=daisy chain
> - * 01..00 IC[1..0] Interrupt Config, 01=push-pull output, active low
> - *
> - * 0000 0101
> - */
> - write_reg(info, IPC, 0x05);
> -}
> -
> -static void async_mode(MGSLPC_INFO *info)
> -{
> - unsigned char val;
> -
> - /* disable all interrupts */
> - irq_disable(info, CHA, 0xffff);
> - irq_disable(info, CHB, 0xffff);
> - port_irq_disable(info, 0xff);
> -
> - /* MODE
> - *
> - * 07 Reserved, 0
> - * 06 FRTS RTS State, 0=active
> - * 05 FCTS Flow Control on CTS
> - * 04 FLON Flow Control Enable
> - * 03 RAC Receiver Active, 0 = inactive
> - * 02 RTS 0=Auto RTS, 1=manual RTS
> - * 01 TRS Timer Resolution, 1=512
> - * 00 TLP Test Loop, 0 = no loop
> - *
> - * 0000 0110
> - */
> - val = 0x06;
> - if (info->params.loopback)
> - val |= BIT0;
> -
> - /* preserve RTS state */
> - if (!(info->serial_signals & SerialSignal_RTS))
> - val |= BIT6;
> - write_reg(info, CHA + MODE, val);
> -
> - /* CCR0
> - *
> - * 07 PU Power Up, 1=active, 0=power down
> - * 06 MCE Master Clock Enable, 1=enabled
> - * 05 Reserved, 0
> - * 04..02 SC[2..0] Encoding, 000=NRZ
> - * 01..00 SM[1..0] Serial Mode, 11=Async
> - *
> - * 1000 0011
> - */
> - write_reg(info, CHA + CCR0, 0x83);
> -
> - /* CCR1
> - *
> - * 07..05 Reserved, 0
> - * 04 ODS Output Driver Select, 1=TxD is push-pull output
> - * 03 BCR Bit Clock Rate, 1=16x
> - * 02..00 CM[2..0] Clock Mode, 111=BRG
> - *
> - * 0001 1111
> - */
> - write_reg(info, CHA + CCR1, 0x1f);
> -
> - /* CCR2 (channel A)
> - *
> - * 07..06 BGR[9..8] Baud rate bits 9..8
> - * 05 BDF Baud rate divisor factor, 0=1, 1=BGR value
> - * 04 SSEL Clock source select, 1=submode b
> - * 03 TOE 0=TxCLK is input, 0=TxCLK is input
> - * 02 RWX Read/Write Exchange 0=disabled
> - * 01 Reserved, 0
> - * 00 DIV, data inversion 0=disabled, 1=enabled
> - *
> - * 0001 0000
> - */
> - write_reg(info, CHA + CCR2, 0x10);
> -
> - /* CCR3
> - *
> - * 07..01 Reserved, 0
> - * 00 PSD DPLL Phase Shift Disable
> - *
> - * 0000 0000
> - */
> - write_reg(info, CHA + CCR3, 0);
> -
> - /* CCR4
> - *
> - * 07 MCK4 Master Clock Divide by 4, 1=enabled
> - * 06 EBRG Enhanced Baud Rate Generator Mode, 1=enabled
> - * 05 TST1 Test Pin, 0=normal operation
> - * 04 ICD Ivert Carrier Detect, 1=enabled (active low)
> - * 03..00 Reserved, must be 0
> - *
> - * 0101 0000
> - */
> - write_reg(info, CHA + CCR4, 0x50);
> - mgslpc_set_rate(info, CHA, info->params.data_rate * 16);
> -
> - /* DAFO Data Format
> - *
> - * 07 Reserved, 0
> - * 06 XBRK transmit break, 0=normal operation
> - * 05 Stop bits (0=1, 1=2)
> - * 04..03 PAR[1..0] Parity (01=odd, 10=even)
> - * 02 PAREN Parity Enable
> - * 01..00 CHL[1..0] Character Length (00=8, 01=7)
> - *
> - */
> - val = 0x00;
> - if (info->params.data_bits != 8)
> - val |= BIT0; /* 7 bits */
> - if (info->params.stop_bits != 1)
> - val |= BIT5;
> - if (info->params.parity != ASYNC_PARITY_NONE)
> - {
> - val |= BIT2; /* Parity enable */
> - if (info->params.parity == ASYNC_PARITY_ODD)
> - val |= BIT3;
> - else
> - val |= BIT4;
> - }
> - write_reg(info, CHA + DAFO, val);
> -
> - /* RFC Rx FIFO Control
> - *
> - * 07 Reserved, 0
> - * 06 DPS, 1=parity bit not stored in data byte
> - * 05 DXS, 0=all data stored in FIFO (including XON/XOFF)
> - * 04 RFDF Rx FIFO Data Format, 1=status byte stored in FIFO
> - * 03..02 RFTH[1..0], rx threshold, 11=16 status + 16 data byte
> - * 01 Reserved, 0
> - * 00 TCDE Terminate Char Detect Enable, 0=disabled
> - *
> - * 0101 1100
> - */
> - write_reg(info, CHA + RFC, 0x5c);
> -
> - /* RLCR Receive length check register
> - *
> - * Max frame length = (RL + 1) * 32
> - */
> - write_reg(info, CHA + RLCR, 0);
> -
> - /* XBCH Transmit Byte Count High
> - *
> - * 07 DMA mode, 0 = interrupt driven
> - * 06 NRM, 0=ABM (ignored)
> - * 05 CAS Carrier Auto Start
> - * 04 XC Transmit Continuously (ignored)
> - * 03..00 XBC[10..8] Transmit byte count bits 10..8
> - *
> - * 0000 0000
> - */
> - val = 0x00;
> - if (info->params.flags & HDLC_FLAG_AUTO_DCD)
> - val |= BIT5;
> - write_reg(info, CHA + XBCH, val);
> - if (info->params.flags & HDLC_FLAG_AUTO_CTS)
> - irq_enable(info, CHA, IRQ_CTS);
> -
> - /* MODE:03 RAC Receiver Active, 1=active */
> - set_reg_bits(info, CHA + MODE, BIT3);
> - enable_auxclk(info);
> - if (info->params.flags & HDLC_FLAG_AUTO_CTS) {
> - irq_enable(info, CHB, IRQ_CTS);
> - /* PVR[3] 1=AUTO CTS active */
> - set_reg_bits(info, CHA + PVR, BIT3);
> - } else
> - clear_reg_bits(info, CHA + PVR, BIT3);
> - irq_enable(info, CHA,
> - IRQ_RXEOM | IRQ_RXFIFO | IRQ_BREAK_ON | IRQ_RXTIME |
> - IRQ_ALLSENT | IRQ_TXFIFO);
> - issue_command(info, CHA, CMD_TXRESET + CMD_RXRESET);
> - wait_command_complete(info, CHA);
> - read_reg16(info, CHA + ISR); /* clear pending IRQs */
> -}
> -
> -/* Set the HDLC idle mode for the transmitter.
> - */
> -static void tx_set_idle(MGSLPC_INFO *info)
> -{
> - /* Note: ESCC2 only supports flags and one idle modes */
> - if (info->idle_mode == HDLC_TXIDLE_FLAGS)
> - set_reg_bits(info, CHA + CCR1, BIT3);
> - else
> - clear_reg_bits(info, CHA + CCR1, BIT3);
> -}
> -
> -/* get state of the V24 status (input) signals.
> - */
> -static void get_signals(MGSLPC_INFO *info)
> -{
> - unsigned char status = 0;
> -
> - /* preserve RTS and DTR */
> - info->serial_signals &= SerialSignal_RTS | SerialSignal_DTR;
> -
> - if (read_reg(info, CHB + VSTR) & BIT7)
> - info->serial_signals |= SerialSignal_DCD;
> - if (read_reg(info, CHB + STAR) & BIT1)
> - info->serial_signals |= SerialSignal_CTS;
> -
> - status = read_reg(info, CHA + PVR);
> - if (!(status & PVR_RI))
> - info->serial_signals |= SerialSignal_RI;
> - if (!(status & PVR_DSR))
> - info->serial_signals |= SerialSignal_DSR;
> -}
> -
> -/* Set the state of RTS and DTR based on contents of
> - * serial_signals member of device extension.
> - */
> -static void set_signals(MGSLPC_INFO *info)
> -{
> - unsigned char val;
> -
> - val = read_reg(info, CHA + MODE);
> - if (info->params.mode == MGSL_MODE_ASYNC) {
> - if (info->serial_signals & SerialSignal_RTS)
> - val &= ~BIT6;
> - else
> - val |= BIT6;
> - } else {
> - if (info->serial_signals & SerialSignal_RTS)
> - val |= BIT2;
> - else
> - val &= ~BIT2;
> - }
> - write_reg(info, CHA + MODE, val);
> -
> - if (info->serial_signals & SerialSignal_DTR)
> - clear_reg_bits(info, CHA + PVR, PVR_DTR);
> - else
> - set_reg_bits(info, CHA + PVR, PVR_DTR);
> -}
> -
> -static void rx_reset_buffers(MGSLPC_INFO *info)
> -{
> - RXBUF *buf;
> - int i;
> -
> - info->rx_put = 0;
> - info->rx_get = 0;
> - info->rx_frame_count = 0;
> - for (i=0 ; i < info->rx_buf_count ; i++) {
> - buf = (RXBUF*)(info->rx_buf + (i * info->rx_buf_size));
> - buf->status = buf->count = 0;
> - }
> -}
> -
> -/* Attempt to return a received HDLC frame
> - * Only frames received without errors are returned.
> - *
> - * Returns true if frame returned, otherwise false
> - */
> -static bool rx_get_frame(MGSLPC_INFO *info, struct tty_struct *tty)
> -{
> - unsigned short status;
> - RXBUF *buf;
> - unsigned int framesize = 0;
> - unsigned long flags;
> - bool return_frame = false;
> -
> - if (info->rx_frame_count == 0)
> - return false;
> -
> - buf = (RXBUF*)(info->rx_buf + (info->rx_get * info->rx_buf_size));
> -
> - status = buf->status;
> -
> - /* 07 VFR 1=valid frame
> - * 06 RDO 1=data overrun
> - * 05 CRC 1=OK, 0=error
> - * 04 RAB 1=frame aborted
> - */
> - if ((status & 0xf0) != 0xA0) {
> - if (!(status & BIT7) || (status & BIT4))
> - info->icount.rxabort++;
> - else if (status & BIT6)
> - info->icount.rxover++;
> - else if (!(status & BIT5)) {
> - info->icount.rxcrc++;
> - if (info->params.crc_type & HDLC_CRC_RETURN_EX)
> - return_frame = true;
> - }
> - framesize = 0;
> -#if SYNCLINK_GENERIC_HDLC
> - {
> - info->netdev->stats.rx_errors++;
> - info->netdev->stats.rx_frame_errors++;
> - }
> -#endif
> - } else
> - return_frame = true;
> -
> - if (return_frame)
> - framesize = buf->count;
> -
> - if (debug_level >= DEBUG_LEVEL_BH)
> - printk("%s(%d):rx_get_frame(%s) status=%04X size=%d\n",
> - __FILE__, __LINE__, info->device_name, status, framesize);
> -
> - if (debug_level >= DEBUG_LEVEL_DATA)
> - trace_block(info, buf->data, framesize, 0);
> -
> - if (framesize) {
> - if ((info->params.crc_type & HDLC_CRC_RETURN_EX &&
> - framesize+1 > info->max_frame_size) ||
> - framesize > info->max_frame_size)
> - info->icount.rxlong++;
> - else {
> - if (status & BIT5)
> - info->icount.rxok++;
> -
> - if (info->params.crc_type & HDLC_CRC_RETURN_EX) {
> - *(buf->data + framesize) = status & BIT5 ? RX_OK:RX_CRC_ERROR;
> - ++framesize;
> - }
> -
> -#if SYNCLINK_GENERIC_HDLC
> - if (info->netcount)
> - hdlcdev_rx(info, buf->data, framesize);
> - else
> -#endif
> - ldisc_receive_buf(tty, buf->data, NULL,
> - framesize);
> - }
> - }
> -
> - spin_lock_irqsave(&info->lock, flags);
> - buf->status = buf->count = 0;
> - info->rx_frame_count--;
> - info->rx_get++;
> - if (info->rx_get >= info->rx_buf_count)
> - info->rx_get = 0;
> - spin_unlock_irqrestore(&info->lock, flags);
> -
> - return true;
> -}
> -
> -static bool register_test(MGSLPC_INFO *info)
> -{
> - static unsigned char patterns[] =
> - { 0x00, 0xff, 0xaa, 0x55, 0x69, 0x96, 0x0f };
> - static unsigned int count = ARRAY_SIZE(patterns);
> - unsigned int i;
> - bool rc = true;
> - unsigned long flags;
> -
> - spin_lock_irqsave(&info->lock, flags);
> - reset_device(info);
> -
> - for (i = 0; i < count; i++) {
> - write_reg(info, XAD1, patterns[i]);
> - write_reg(info, XAD2, patterns[(i + 1) % count]);
> - if ((read_reg(info, XAD1) != patterns[i]) ||
> - (read_reg(info, XAD2) != patterns[(i + 1) % count])) {
> - rc = false;
> - break;
> - }
> - }
> -
> - spin_unlock_irqrestore(&info->lock, flags);
> - return rc;
> -}
> -
> -static bool irq_test(MGSLPC_INFO *info)
> -{
> - unsigned long end_time;
> - unsigned long flags;
> -
> - spin_lock_irqsave(&info->lock, flags);
> - reset_device(info);
> -
> - info->testing_irq = true;
> - hdlc_mode(info);
> -
> - info->irq_occurred = false;
> -
> - /* init hdlc mode */
> -
> - irq_enable(info, CHA, IRQ_TIMER);
> - write_reg(info, CHA + TIMR, 0); /* 512 cycles */
> - issue_command(info, CHA, CMD_START_TIMER);
> -
> - spin_unlock_irqrestore(&info->lock, flags);
> -
> - end_time=100;
> - while(end_time-- && !info->irq_occurred) {
> - msleep_interruptible(10);
> - }
> -
> - info->testing_irq = false;
> -
> - spin_lock_irqsave(&info->lock, flags);
> - reset_device(info);
> - spin_unlock_irqrestore(&info->lock, flags);
> -
> - return info->irq_occurred;
> -}
> -
> -static int adapter_test(MGSLPC_INFO *info)
> -{
> - if (!register_test(info)) {
> - info->init_error = DiagStatus_AddressFailure;
> - printk("%s(%d):Register test failure for device %s Addr=%04X\n",
> - __FILE__, __LINE__, info->device_name, (unsigned short)(info->io_base));
> - return -ENODEV;
> - }
> -
> - if (!irq_test(info)) {
> - info->init_error = DiagStatus_IrqFailure;
> - printk("%s(%d):Interrupt test failure for device %s IRQ=%d\n",
> - __FILE__, __LINE__, info->device_name, (unsigned short)(info->irq_level));
> - return -ENODEV;
> - }
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):device %s passed diagnostics\n",
> - __FILE__, __LINE__, info->device_name);
> - return 0;
> -}
> -
> -static void trace_block(MGSLPC_INFO *info,const char* data, int count, int xmit)
> -{
> - int i;
> - int linecount;
> - if (xmit)
> - printk("%s tx data:\n", info->device_name);
> - else
> - printk("%s rx data:\n", info->device_name);
> -
> - while(count) {
> - if (count > 16)
> - linecount = 16;
> - else
> - linecount = count;
> -
> - for(i=0;i<linecount;i++)
> - printk("%02X ", (unsigned char)data[i]);
> - for(;i<17;i++)
> - printk(" ");
> - for(i=0;i<linecount;i++) {
> - if (data[i]>=040 && data[i]<=0176)
> - printk("%c", data[i]);
> - else
> - printk(".");
> - }
> - printk("\n");
> -
> - data += linecount;
> - count -= linecount;
> - }
> -}
> -
> -/* HDLC frame time out
> - * update stats and do tx completion processing
> - */
> -static void tx_timeout(struct timer_list *t)
> -{
> - MGSLPC_INFO *info = from_timer(info, t, tx_timer);
> - unsigned long flags;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s(%d):tx_timeout(%s)\n",
> - __FILE__, __LINE__, info->device_name);
> - if (info->tx_active &&
> - info->params.mode == MGSL_MODE_HDLC) {
> - info->icount.txtimeout++;
> - }
> - spin_lock_irqsave(&info->lock, flags);
> - info->tx_active = false;
> - info->tx_count = info->tx_put = info->tx_get = 0;
> -
> - spin_unlock_irqrestore(&info->lock, flags);
> -
> -#if SYNCLINK_GENERIC_HDLC
> - if (info->netcount)
> - hdlcdev_tx_done(info);
> - else
> -#endif
> - {
> - struct tty_struct *tty = tty_port_tty_get(&info->port);
> - bh_transmit(info, tty);
> - tty_kref_put(tty);
> - }
> -}
> -
> -#if SYNCLINK_GENERIC_HDLC
> -
> -/*
> - * called by generic HDLC layer when protocol selected (PPP, frame relay, etc.)
> - * set encoding and frame check sequence (FCS) options
> - *
> - * dev pointer to network device structure
> - * encoding serial encoding setting
> - * parity FCS setting
> - *
> - * returns 0 if success, otherwise error code
> - */
> -static int hdlcdev_attach(struct net_device *dev, unsigned short encoding,
> - unsigned short parity)
> -{
> - MGSLPC_INFO *info = dev_to_port(dev);
> - struct tty_struct *tty;
> - unsigned char new_encoding;
> - unsigned short new_crctype;
> -
> - /* return error if TTY interface open */
> - if (info->port.count)
> - return -EBUSY;
> -
> - switch (encoding)
> - {
> - case ENCODING_NRZ: new_encoding = HDLC_ENCODING_NRZ; break;
> - case ENCODING_NRZI: new_encoding = HDLC_ENCODING_NRZI_SPACE; break;
> - case ENCODING_FM_MARK: new_encoding = HDLC_ENCODING_BIPHASE_MARK; break;
> - case ENCODING_FM_SPACE: new_encoding = HDLC_ENCODING_BIPHASE_SPACE; break;
> - case ENCODING_MANCHESTER: new_encoding = HDLC_ENCODING_BIPHASE_LEVEL; break;
> - default: return -EINVAL;
> - }
> -
> - switch (parity)
> - {
> - case PARITY_NONE: new_crctype = HDLC_CRC_NONE; break;
> - case PARITY_CRC16_PR1_CCITT: new_crctype = HDLC_CRC_16_CCITT; break;
> - case PARITY_CRC32_PR1_CCITT: new_crctype = HDLC_CRC_32_CCITT; break;
> - default: return -EINVAL;
> - }
> -
> - info->params.encoding = new_encoding;
> - info->params.crc_type = new_crctype;
> -
> - /* if network interface up, reprogram hardware */
> - if (info->netcount) {
> - tty = tty_port_tty_get(&info->port);
> - mgslpc_program_hw(info, tty);
> - tty_kref_put(tty);
> - }
> -
> - return 0;
> -}
> -
> -/*
> - * called by generic HDLC layer to send frame
> - *
> - * skb socket buffer containing HDLC frame
> - * dev pointer to network device structure
> - */
> -static netdev_tx_t hdlcdev_xmit(struct sk_buff *skb,
> - struct net_device *dev)
> -{
> - MGSLPC_INFO *info = dev_to_port(dev);
> - unsigned long flags;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk(KERN_INFO "%s:hdlc_xmit(%s)\n", __FILE__, dev->name);
> -
> - /* stop sending until this frame completes */
> - netif_stop_queue(dev);
> -
> - /* copy data to device buffers */
> - skb_copy_from_linear_data(skb, info->tx_buf, skb->len);
> - info->tx_get = 0;
> - info->tx_put = info->tx_count = skb->len;
> -
> - /* update network statistics */
> - dev->stats.tx_packets++;
> - dev->stats.tx_bytes += skb->len;
> -
> - /* done with socket buffer, so free it */
> - dev_kfree_skb(skb);
> -
> - /* save start time for transmit timeout detection */
> - netif_trans_update(dev);
> -
> - /* start hardware transmitter if necessary */
> - spin_lock_irqsave(&info->lock, flags);
> - if (!info->tx_active) {
> - struct tty_struct *tty = tty_port_tty_get(&info->port);
> - tx_start(info, tty);
> - tty_kref_put(tty);
> - }
> - spin_unlock_irqrestore(&info->lock, flags);
> -
> - return NETDEV_TX_OK;
> -}
> -
> -/*
> - * called by network layer when interface enabled
> - * claim resources and initialize hardware
> - *
> - * dev pointer to network device structure
> - *
> - * returns 0 if success, otherwise error code
> - */
> -static int hdlcdev_open(struct net_device *dev)
> -{
> - MGSLPC_INFO *info = dev_to_port(dev);
> - struct tty_struct *tty;
> - int rc;
> - unsigned long flags;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s:hdlcdev_open(%s)\n", __FILE__, dev->name);
> -
> - /* generic HDLC layer open processing */
> - rc = hdlc_open(dev);
> - if (rc != 0)
> - return rc;
> -
> - /* arbitrate between network and tty opens */
> - spin_lock_irqsave(&info->netlock, flags);
> - if (info->port.count != 0 || info->netcount != 0) {
> - printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name);
> - spin_unlock_irqrestore(&info->netlock, flags);
> - return -EBUSY;
> - }
> - info->netcount=1;
> - spin_unlock_irqrestore(&info->netlock, flags);
> -
> - tty = tty_port_tty_get(&info->port);
> - /* claim resources and init adapter */
> - rc = startup(info, tty);
> - if (rc != 0) {
> - tty_kref_put(tty);
> - spin_lock_irqsave(&info->netlock, flags);
> - info->netcount=0;
> - spin_unlock_irqrestore(&info->netlock, flags);
> - return rc;
> - }
> - /* assert RTS and DTR, apply hardware settings */
> - info->serial_signals |= SerialSignal_RTS | SerialSignal_DTR;
> - mgslpc_program_hw(info, tty);
> - tty_kref_put(tty);
> -
> - /* enable network layer transmit */
> - netif_trans_update(dev);
> - netif_start_queue(dev);
> -
> - /* inform generic HDLC layer of current DCD status */
> - spin_lock_irqsave(&info->lock, flags);
> - get_signals(info);
> - spin_unlock_irqrestore(&info->lock, flags);
> - if (info->serial_signals & SerialSignal_DCD)
> - netif_carrier_on(dev);
> - else
> - netif_carrier_off(dev);
> - return 0;
> -}
> -
> -/*
> - * called by network layer when interface is disabled
> - * shutdown hardware and release resources
> - *
> - * dev pointer to network device structure
> - *
> - * returns 0 if success, otherwise error code
> - */
> -static int hdlcdev_close(struct net_device *dev)
> -{
> - MGSLPC_INFO *info = dev_to_port(dev);
> - struct tty_struct *tty = tty_port_tty_get(&info->port);
> - unsigned long flags;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s:hdlcdev_close(%s)\n", __FILE__, dev->name);
> -
> - netif_stop_queue(dev);
> -
> - /* shutdown adapter and release resources */
> - shutdown(info, tty);
> - tty_kref_put(tty);
> - hdlc_close(dev);
> -
> - spin_lock_irqsave(&info->netlock, flags);
> - info->netcount=0;
> - spin_unlock_irqrestore(&info->netlock, flags);
> -
> - return 0;
> -}
> -
> -/*
> - * called by network layer to process IOCTL call to network device
> - *
> - * dev pointer to network device structure
> - * ifs pointer to network interface settings structure
> - *
> - * returns 0 if success, otherwise error code
> - */
> -static int hdlcdev_wan_ioctl(struct net_device *dev, struct if_settings *ifs)
> -{
> - const size_t size = sizeof(sync_serial_settings);
> - sync_serial_settings new_line;
> - sync_serial_settings __user *line = ifs->ifs_ifsu.sync;
> - MGSLPC_INFO *info = dev_to_port(dev);
> - unsigned int flags;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("%s:hdlcdev_ioctl(%s)\n", __FILE__, dev->name);
> -
> - /* return error if TTY interface open */
> - if (info->port.count)
> - return -EBUSY;
> -
> - memset(&new_line, 0, size);
> -
> - switch (ifs->type) {
> - case IF_GET_IFACE: /* return current sync_serial_settings */
> -
> - ifs->type = IF_IFACE_SYNC_SERIAL;
> - if (ifs->size < size) {
> - ifs->size = size; /* data size wanted */
> - return -ENOBUFS;
> - }
> -
> - flags = info->params.flags & (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL |
> - HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN |
> - HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL |
> - HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN);
> -
> - switch (flags){
> - case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN): new_line.clock_type = CLOCK_EXT; break;
> - case (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_INT; break;
> - case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_BRG): new_line.clock_type = CLOCK_TXINT; break;
> - case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_RXCPIN): new_line.clock_type = CLOCK_TXFROMRX; break;
> - default: new_line.clock_type = CLOCK_DEFAULT;
> - }
> -
> - new_line.clock_rate = info->params.clock_speed;
> - new_line.loopback = info->params.loopback ? 1:0;
> -
> - if (copy_to_user(line, &new_line, size))
> - return -EFAULT;
> - return 0;
> -
> - case IF_IFACE_SYNC_SERIAL: /* set sync_serial_settings */
> -
> - if(!capable(CAP_NET_ADMIN))
> - return -EPERM;
> - if (copy_from_user(&new_line, line, size))
> - return -EFAULT;
> -
> - switch (new_line.clock_type)
> - {
> - case CLOCK_EXT: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN; break;
> - case CLOCK_TXFROMRX: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_RXCPIN; break;
> - case CLOCK_INT: flags = HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG; break;
> - case CLOCK_TXINT: flags = HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_BRG; break;
> - case CLOCK_DEFAULT: flags = info->params.flags &
> - (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL |
> - HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN |
> - HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL |
> - HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN); break;
> - default: return -EINVAL;
> - }
> -
> - if (new_line.loopback != 0 && new_line.loopback != 1)
> - return -EINVAL;
> -
> - info->params.flags &= ~(HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_RXC_DPLL |
> - HDLC_FLAG_RXC_BRG | HDLC_FLAG_RXC_TXCPIN |
> - HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL |
> - HDLC_FLAG_TXC_BRG | HDLC_FLAG_TXC_RXCPIN);
> - info->params.flags |= flags;
> -
> - info->params.loopback = new_line.loopback;
> -
> - if (flags & (HDLC_FLAG_RXC_BRG | HDLC_FLAG_TXC_BRG))
> - info->params.clock_speed = new_line.clock_rate;
> - else
> - info->params.clock_speed = 0;
> -
> - /* if network interface up, reprogram hardware */
> - if (info->netcount) {
> - struct tty_struct *tty = tty_port_tty_get(&info->port);
> - mgslpc_program_hw(info, tty);
> - tty_kref_put(tty);
> - }
> - return 0;
> - default:
> - return hdlc_ioctl(dev, ifs);
> - }
> -}
> -
> -/*
> - * called by network layer when transmit timeout is detected
> - *
> - * dev pointer to network device structure
> - */
> -static void hdlcdev_tx_timeout(struct net_device *dev, unsigned int txqueue)
> -{
> - MGSLPC_INFO *info = dev_to_port(dev);
> - unsigned long flags;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("hdlcdev_tx_timeout(%s)\n", dev->name);
> -
> - dev->stats.tx_errors++;
> - dev->stats.tx_aborted_errors++;
> -
> - spin_lock_irqsave(&info->lock, flags);
> - tx_stop(info);
> - spin_unlock_irqrestore(&info->lock, flags);
> -
> - netif_wake_queue(dev);
> -}
> -
> -/*
> - * called by device driver when transmit completes
> - * reenable network layer transmit if stopped
> - *
> - * info pointer to device instance information
> - */
> -static void hdlcdev_tx_done(MGSLPC_INFO *info)
> -{
> - if (netif_queue_stopped(info->netdev))
> - netif_wake_queue(info->netdev);
> -}
> -
> -/*
> - * called by device driver when frame received
> - * pass frame to network layer
> - *
> - * info pointer to device instance information
> - * buf pointer to buffer contianing frame data
> - * size count of data bytes in buf
> - */
> -static void hdlcdev_rx(MGSLPC_INFO *info, char *buf, int size)
> -{
> - struct sk_buff *skb = dev_alloc_skb(size);
> - struct net_device *dev = info->netdev;
> -
> - if (debug_level >= DEBUG_LEVEL_INFO)
> - printk("hdlcdev_rx(%s)\n", dev->name);
> -
> - if (skb == NULL) {
> - printk(KERN_NOTICE "%s: can't alloc skb, dropping packet\n", dev->name);
> - dev->stats.rx_dropped++;
> - return;
> - }
> -
> - skb_put_data(skb, buf, size);
> -
> - skb->protocol = hdlc_type_trans(skb, dev);
> -
> - dev->stats.rx_packets++;
> - dev->stats.rx_bytes += size;
> -
> - netif_rx(skb);
> -}
> -
> -static const struct net_device_ops hdlcdev_ops = {
> - .ndo_open = hdlcdev_open,
> - .ndo_stop = hdlcdev_close,
> - .ndo_start_xmit = hdlc_start_xmit,
> - .ndo_siocwandev = hdlcdev_wan_ioctl,
> - .ndo_tx_timeout = hdlcdev_tx_timeout,
> -};
> -
> -/*
> - * called by device driver when adding device instance
> - * do generic HDLC initialization
> - *
> - * info pointer to device instance information
> - *
> - * returns 0 if success, otherwise error code
> - */
> -static int hdlcdev_init(MGSLPC_INFO *info)
> -{
> - int rc;
> - struct net_device *dev;
> - hdlc_device *hdlc;
> -
> - /* allocate and initialize network and HDLC layer objects */
> -
> - dev = alloc_hdlcdev(info);
> - if (dev == NULL) {
> - printk(KERN_ERR "%s:hdlc device allocation failure\n", __FILE__);
> - return -ENOMEM;
> - }
> -
> - /* for network layer reporting purposes only */
> - dev->base_addr = info->io_base;
> - dev->irq = info->irq_level;
> -
> - /* network layer callbacks and settings */
> - dev->netdev_ops = &hdlcdev_ops;
> - dev->watchdog_timeo = 10 * HZ;
> - dev->tx_queue_len = 50;
> -
> - /* generic HDLC layer callbacks and settings */
> - hdlc = dev_to_hdlc(dev);
> - hdlc->attach = hdlcdev_attach;
> - hdlc->xmit = hdlcdev_xmit;
> -
> - /* register objects with HDLC layer */
> - rc = register_hdlc_device(dev);
> - if (rc) {
> - printk(KERN_WARNING "%s:unable to register hdlc device\n", __FILE__);
> - free_netdev(dev);
> - return rc;
> - }
> -
> - info->netdev = dev;
> - return 0;
> -}
> -
> -/*
> - * called by device driver when removing device instance
> - * do generic HDLC cleanup
> - *
> - * info pointer to device instance information
> - */
> -static void hdlcdev_exit(MGSLPC_INFO *info)
> -{
> - unregister_hdlc_device(info->netdev);
> - free_netdev(info->netdev);
> - info->netdev = NULL;
> -}
> -
> -#endif /* CONFIG_HDLC */
> -
> diff --git a/include/linux/cm4000_cs.h b/include/linux/cm4000_cs.h
> deleted file mode 100644
> index ea4958e07a14..000000000000
> --- a/include/linux/cm4000_cs.h
> +++ /dev/null
> @@ -1,11 +0,0 @@
> -/* SPDX-License-Identifier: GPL-2.0 */
> -#ifndef _CM4000_H_
> -#define _CM4000_H_
> -
> -#include <uapi/linux/cm4000_cs.h>
> -
> -
> -#define DEVICE_NAME "cmm"
> -#define MODULE_NAME "cm4000_cs"
> -
> -#endif /* _CM4000_H_ */
--
js
suse labs
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