From: Jiri Slaby jirislaby@kernel.org

mainline inclusion from mainline-v6.4-rc1 commit 9b12f050c76f090cc6d0aebe0ef76fed79ec3f15 category: bugfix bugzilla: NA CVE: CVE-2022-44033

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...

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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.fastmai... [2] https://lore.kernel.org/all/c5b39544-a4fb-4796-a046-0b9be9853787@app.fastmai...

Signed-off-by: Jiri Slaby (SUSE) jirislaby@kernel.org Cc: "Hyunwoo Kim" imv4bel@gmail.com Cc: Harald Welte laforge@gnumonks.org Cc: Lubomir Rintel lkundrak@v3.sk Cc: Arnd Bergmann arnd@arndb.de Cc: Greg Kroah-Hartman gregkh@linuxfoundation.org Acked-by: Dominik Brodowski linux@dominikbrodowski.net Reviewed-by: Arnd Bergmann arnd@arndb.de Link: https://lore.kernel.org/r/20230222092302.6348-2-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

Conflicts: Documentation/process/magic-number.rst Documentation/translations/it_IT/process/magic-number.rst Documentation/translations/sp_SP/process/magic-number.rst Documentation/translations/zh_CN/process/magic-number.rst Documentation/translations/zh_TW/process/magic-number.rst Documentation/userspace-api/ioctl/ioctl-number.rst MAINTAINERS arch/powerpc/configs/ppc6xx_defconfig drivers/char/Kconfig drivers/char/pcmcia/cm4000_cs.c drivers/char/pcmcia/cm4040_cs.c drivers/char/pcmcia/scr24x_cs.c drivers/char/pcmcia/synclink_cs.c

Signed-off-by: Zhang Xiaoxu zhangxiaoxu5@huawei.com --- Documentation/process/magic-number.rst | 1 - .../it_IT/process/magic-number.rst | 1 - .../zh_CN/process/magic-number.rst | 1 - .../userspace-api/ioctl/ioctl-number.rst | 1 - MAINTAINERS | 17 - arch/powerpc/configs/ppc6xx_defconfig | 2 - drivers/char/Kconfig | 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 | 685 --- drivers/char/pcmcia/cm4040_cs.h | 48 - drivers/char/pcmcia/scr24x_cs.c | 360 -- drivers/char/pcmcia/synclink_cs.c | 4304 ----------------- include/linux/cm4000_cs.h | 11 - include/uapi/linux/cm4000_cs.h | 64 - 17 files changed, 7480 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 delete mode 100644 include/uapi/linux/cm4000_cs.h

diff --git a/Documentation/process/magic-number.rst b/Documentation/process/magic-number.rst index eee9b44553b3..c3fc23e12137 100644 --- a/Documentation/process/magic-number.rst +++ b/Documentation/process/magic-number.rst @@ -90,7 +90,6 @@ AX25_MAGIC 0x5316 ax_disp ``drivers/net/mk TTY_MAGIC 0x5401 tty_struct ``include/linux/tty.h`` MGSL_MAGIC 0x5401 mgsl_info ``drivers/char/synclink.c`` TTY_DRIVER_MAGIC 0x5402 tty_driver ``include/linux/tty_driver.h`` -MGSLPC_MAGIC 0x5402 mgslpc_info ``drivers/char/pcmcia/synclink_cs.c`` TTY_LDISC_MAGIC 0x5403 tty_ldisc ``include/linux/tty_ldisc.h`` USB_SERIAL_MAGIC 0x6702 usb_serial ``drivers/usb/serial/usb-serial.h`` FULL_DUPLEX_MAGIC 0x6969 ``drivers/net/ethernet/dec/tulip/de2104x.c`` diff --git a/Documentation/translations/it_IT/process/magic-number.rst b/Documentation/translations/it_IT/process/magic-number.rst index 783e0de314a0..10875306ae64 100644 --- a/Documentation/translations/it_IT/process/magic-number.rst +++ b/Documentation/translations/it_IT/process/magic-number.rst @@ -96,7 +96,6 @@ AX25_MAGIC 0x5316 ax_disp ``drivers/net/mk TTY_MAGIC 0x5401 tty_struct ``include/linux/tty.h`` MGSL_MAGIC 0x5401 mgsl_info ``drivers/char/synclink.c`` TTY_DRIVER_MAGIC 0x5402 tty_driver ``include/linux/tty_driver.h`` -MGSLPC_MAGIC 0x5402 mgslpc_info ``drivers/char/pcmcia/synclink_cs.c`` TTY_LDISC_MAGIC 0x5403 tty_ldisc ``include/linux/tty_ldisc.h`` USB_SERIAL_MAGIC 0x6702 usb_serial ``drivers/usb/serial/usb-serial.h`` FULL_DUPLEX_MAGIC 0x6969 ``drivers/net/ethernet/dec/tulip/de2104x.c`` diff --git a/Documentation/translations/zh_CN/process/magic-number.rst b/Documentation/translations/zh_CN/process/magic-number.rst index e4c225996af0..7e4010a94f12 100644 --- a/Documentation/translations/zh_CN/process/magic-number.rst +++ b/Documentation/translations/zh_CN/process/magic-number.rst @@ -79,7 +79,6 @@ AX25_MAGIC 0x5316 ax_disp ``drivers/net/mk TTY_MAGIC 0x5401 tty_struct ``include/linux/tty.h`` MGSL_MAGIC 0x5401 mgsl_info ``drivers/char/synclink.c`` TTY_DRIVER_MAGIC 0x5402 tty_driver ``include/linux/tty_driver.h`` -MGSLPC_MAGIC 0x5402 mgslpc_info ``drivers/char/pcmcia/synclink_cs.c`` TTY_LDISC_MAGIC 0x5403 tty_ldisc ``include/linux/tty_ldisc.h`` USB_SERIAL_MAGIC 0x6702 usb_serial ``drivers/usb/serial/usb-serial.h`` FULL_DUPLEX_MAGIC 0x6969 ``drivers/net/ethernet/dec/tulip/de2104x.c`` diff --git a/Documentation/userspace-api/ioctl/ioctl-number.rst b/Documentation/userspace-api/ioctl/ioctl-number.rst index 8bb17266b699..0bcf425eeb1a 100644 --- a/Documentation/userspace-api/ioctl/ioctl-number.rst +++ b/Documentation/userspace-api/ioctl/ioctl-number.rst @@ -218,7 +218,6 @@ Code Seq# Include File Comments 'a' 00-0F drivers/crypto/qat/qat_common/adf_cfg_common.h conflict! qat driver 'b' 00-FF conflict! bit3 vme host bridge mailto:natalia@nikhefk.nikhef.nl -'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 0b5b997ed501..17b992be0c4f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -12920,18 +12920,6 @@ S: Maintained F: Documentation/filesystems/omfs.rst F: fs/omfs/

-OMNIKEY CARDMAN 4000 DRIVER -M: Harald Welte laforge@gnumonks.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@gnumonks.org -S: Maintained -F: drivers/char/pcmcia/cm4040_cs.* - OMNIVISION OV13858 SENSOR DRIVER M: Sakari Ailus sakari.ailus@linux.intel.com L: linux-media@vger.kernel.org @@ -15608,11 +15596,6 @@ F: include/linux/wait.h F: include/uapi/linux/sched.h F: kernel/sched/

-SCR24X CHIP CARD INTERFACE DRIVER -M: Lubomir Rintel lkundrak@v3.sk -S: Supported -F: drivers/char/pcmcia/scr24x_cs.c - SCSI CDROM DRIVER M: Jens Axboe axboe@kernel.dk L: linux-scsi@vger.kernel.org diff --git a/arch/powerpc/configs/ppc6xx_defconfig b/arch/powerpc/configs/ppc6xx_defconfig index 021da6736570..354d085f80c2 100644 --- a/arch/powerpc/configs/ppc6xx_defconfig +++ b/arch/powerpc/configs/ppc6xx_defconfig @@ -625,8 +625,6 @@ CONFIG_HW_RANDOM_VIRTIO=m CONFIG_NVRAM=y CONFIG_DTLK=m CONFIG_R3964=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/Kconfig b/drivers/char/Kconfig index 6fa56a473995..677e16195d32 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -264,8 +264,6 @@ config GPIO_TB0219 depends on TANBAC_TB022X select GPIO_VR41XX

-source "drivers/char/pcmcia/Kconfig" - config MWAVE tristate "ACP Modem (Mwave) support" depends on X86 && TTY diff --git a/drivers/char/Makefile b/drivers/char/Makefile index 71d76fd62692..e2b4fc88154d 100644 --- a/drivers/char/Makefile +++ b/drivers/char/Makefile @@ -37,7 +37,6 @@ 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 9468e9520cee..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@omnikey.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@gnumonks.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 fields. - * initialising to zero depends on it - see ZERO_DEV below. */ - 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->atr_csum,0, \ - sizeof(struct cm4000_dev) - \ - offsetof(struct cm4000_dev, atr_csum)) - -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; - } - usleep_range(10000, 11000); - } - 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; - } - usleep_range(10000, 11000); - } - - /* 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 tmp; - 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 */ - tmp = 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 d5e43606339c..000000000000 --- a/drivers/char/pcmcia/cm4040_cs.c +++ /dev/null @@ -1,685 +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@gnumonks.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; - unsigned char uc; - - 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; - } - - uc = 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 47feb39af34c..000000000000 --- a/drivers/char/pcmcia/scr24x_cs.c +++ /dev/null @@ -1,360 +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; - dev->c_dev.ops = &scr24x_fops; - 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 e342daa73d1b..000000000000 --- a/drivers/char/pcmcia/synclink_cs.c +++ /dev/null @@ -1,4304 +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@microgate.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) */ - - char *flag_buf; - 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 int carrier_raised(struct tty_port *port); -static void dtr_rts(struct tty_port *port, int onoff); - -#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; - info->port.close_delay = 5*HZ/10; - info->port.closing_wait = 30*HZ; - 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->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->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, 1); - - 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, 0); -} - -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 */ - - switch (cflag & CSIZE) { - case CS5: info->params.data_bits = 5; break; - case CS6: info->params.data_bits = 6; break; - case CS7: info->params.data_bits = 7; break; - case CS8: info->params.data_bits = 8; break; - default: info->params.data_bits = 7; break; - } - - 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; -#ifdef CMSPAR - if (cflag & CMSPAR) - info->params.parity = ASYNC_PARITY_SPACE; -#endif - } - - /* 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->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->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 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 int mgslpc_chars_in_buffer(struct tty_struct *tty) -{ - MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; - 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)=%d\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, 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 int 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); - - if (info->serial_signals & SerialSignal_DCD) - return 1; - return 0; -} - -static void dtr_rts(struct tty_port *port, int onoff) -{ - MGSLPC_INFO *info = container_of(port, MGSLPC_INFO, port); - unsigned long flags; - - spin_lock_irqsave(&info->lock, flags); - if (onoff) - 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); - - port->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0; - - 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; - - /* unused flag buffer to satisfy receive_buf calling interface */ - info->flag_buf = kzalloc(info->max_frame_size, GFP_KERNEL); - if (!info->flag_buf) { - kfree(info->rx_buf); - 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; - kfree(info->flag_buf); - info->flag_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: - put_tty_driver(serial_driver); -err: - return rc; -} - -static void __exit synclink_cs_exit(void) -{ - pcmcia_unregister_driver(&mgslpc_driver); - tty_unregister_driver(serial_driver); - put_tty_driver(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, info->flag_buf, 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 - * ifr pointer to network interface request structure - * cmd IOCTL command code - * - * returns 0 if success, otherwise error code - */ -static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) -{ - const size_t size = sizeof(sync_serial_settings); - sync_serial_settings new_line; - sync_serial_settings __user *line = ifr->ifr_settings.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; - - if (cmd != SIOCWANDEV) - return hdlc_ioctl(dev, ifr, cmd); - - memset(&new_line, 0, size); - - switch(ifr->ifr_settings.type) { - case IF_GET_IFACE: /* return current sync_serial_settings */ - - ifr->ifr_settings.type = IF_IFACE_SYNC_SERIAL; - if (ifr->ifr_settings.size < size) { - ifr->ifr_settings.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, ifr, cmd); - } -} - -/** - * 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_do_ioctl = hdlcdev_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_ */ diff --git a/include/uapi/linux/cm4000_cs.h b/include/uapi/linux/cm4000_cs.h deleted file mode 100644 index c70a62ec8a49..000000000000 --- a/include/uapi/linux/cm4000_cs.h +++ /dev/null @@ -1,64 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ -#ifndef _UAPI_CM4000_H_ -#define _UAPI_CM4000_H_ - -#include <linux/types.h> -#include <linux/ioctl.h> - -#define MAX_ATR 33 - -#define CM4000_MAX_DEV 4 - -/* those two structures are passed via ioctl() from/to userspace. They are - * used by existing userspace programs, so I kepth the awkward "bIFSD" naming - * not to break compilation of userspace apps. -HW */ - -typedef struct atreq { - __s32 atr_len; - unsigned char atr[64]; - __s32 power_act; - unsigned char bIFSD; - unsigned char bIFSC; -} atreq_t; - - -/* what is particularly stupid in the original driver is the arch-dependent - * member sizes. This leads to CONFIG_COMPAT breakage, since 32bit userspace - * will lay out the structure members differently than the 64bit kernel. - * - * I've changed "ptsreq.protocol" from "unsigned long" to "__u32". - * On 32bit this will make no difference. With 64bit kernels, it will make - * 32bit apps work, too. - */ - -typedef struct ptsreq { - __u32 protocol; /*T=0: 2^0, T=1: 2^1*/ - unsigned char flags; - unsigned char pts1; - unsigned char pts2; - unsigned char pts3; -} ptsreq_t; - -#define CM_IOC_MAGIC 'c' -#define CM_IOC_MAXNR 255 - -#define CM_IOCGSTATUS _IOR (CM_IOC_MAGIC, 0, unsigned char *) -#define CM_IOCGATR _IOWR(CM_IOC_MAGIC, 1, atreq_t *) -#define CM_IOCSPTS _IOW (CM_IOC_MAGIC, 2, ptsreq_t *) -#define CM_IOCSRDR _IO (CM_IOC_MAGIC, 3) -#define CM_IOCARDOFF _IO (CM_IOC_MAGIC, 4) - -#define CM_IOSDBGLVL _IOW(CM_IOC_MAGIC, 250, int*) - -/* card and device states */ -#define CM_CARD_INSERTED 0x01 -#define CM_CARD_POWERED 0x02 -#define CM_ATR_PRESENT 0x04 -#define CM_ATR_VALID 0x08 -#define CM_STATE_VALID 0x0f -/* extra info only from CM4000 */ -#define CM_NO_READER 0x10 -#define CM_BAD_CARD 0x20 - - -#endif /* _UAPI_CM4000_H_ */