diff -uNr linux-org/Documentation/Configure.help linux/Documentation/Configure.help --- linux-org/Documentation/Configure.help 2006-02-06 14:01:32.375955928 +0100 +++ linux/Documentation/Configure.help 2006-02-06 15:51:13.332498464 +0100 @@ -4057,6 +4057,9 @@ The module will be called synclinkmp.o. If you want to do that, say M here. +Option HSDPA card support +CONFIG_NOZOMI + ACP Modem (Mwave) support CONFIG_MWAVE The ACP modem (Mwave) for Linux is a WinModem. It is composed of a diff -uNr linux-org/drivers/char/Config.in linux/drivers/char/Config.in --- linux-org/drivers/char/Config.in 2006-02-06 14:01:55.767399888 +0100 +++ linux/drivers/char/Config.in 2006-02-06 15:51:07.574373832 +0100 @@ -388,6 +388,8 @@ endmenu +tristate ' Option HSDPA card support' CONFIG_NOZOMI + if [ "$CONFIG_HOTPLUG" = "y" -a "$CONFIG_PCMCIA" != "n" ]; then source drivers/char/pcmcia/Config.in fi diff -uNr linux-org/drivers/char/Makefile linux/drivers/char/Makefile --- linux-org/drivers/char/Makefile 2006-02-06 14:01:55.782397608 +0100 +++ linux/drivers/char/Makefile 2006-02-06 15:30:37.949305256 +0100 @@ -331,6 +331,11 @@ obj-$(CONFIG_INDYDOG) += indydog.o obj-$(CONFIG_8xx_WDT) += mpc8xx_wdt.o +subdir-$(CONFIG_NOZOMI) += nozomi +ifeq ($(CONFIG_NOZOMI),y) + obj-y += nozomi/noz.o +endif + subdir-$(CONFIG_MWAVE) += mwave ifeq ($(CONFIG_MWAVE),y) obj-y += mwave/mwave.o diff -uNr linux-org/drivers/char/nozomi/CHANGELOG linux/drivers/char/nozomi/CHANGELOG --- linux-org/drivers/char/nozomi/CHANGELOG 1970-01-01 01:00:00.000000000 +0100 +++ linux/drivers/char/nozomi/CHANGELOG 2006-02-06 15:30:07.370953872 +0100 @@ -0,0 +1,7 @@ +/* + * Version 1.0 + * + * First version of driver, only tested with card of type F32_2. + * Works fine with 2.4 and 2.6 kernels. + * Driver also support big endian architecture. + */ diff -uNr linux-org/drivers/char/nozomi/COPYING linux/drivers/char/nozomi/COPYING --- linux-org/drivers/char/nozomi/COPYING 1970-01-01 01:00:00.000000000 +0100 +++ linux/drivers/char/nozomi/COPYING 2006-02-06 15:30:07.371953720 +0100 @@ -0,0 +1,340 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. 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If this is what you want to do, use the GNU Library General +Public License instead of this License. diff -uNr linux-org/drivers/char/nozomi/Makefile linux/drivers/char/nozomi/Makefile --- linux-org/drivers/char/nozomi/Makefile 1970-01-01 01:00:00.000000000 +0100 +++ linux/drivers/char/nozomi/Makefile 2006-02-06 15:30:07.379952504 +0100 @@ -0,0 +1,25 @@ +# +# Makefile for ACP Modem (Mwave). +# +# See the README file in this directory for more info. +# +# Note! Dependencies are done automagically by 'make dep', which also +# removes any old dependencies. DON'T put your own dependencies here +# unless it's something special (ie not a .c file). +# +# Note 2! The CFLAGS definitions are now inherited from the +# parent makes.. +# + +# To compile in lots (~20 KiB) of run-time enablable printk()s for debugging: +#EXTRA_CFLAGS += -DMW_TRACE + +# To have the mwave driver disable other uarts if necessary +# EXTRA_CFLAGS += -DMWAVE_FUTZ_WITH_OTHER_DEVICES + +O_TARGET := noz.o + +obj-y := nozomi.o kfifo.o +obj-m := $(O_TARGET) + +include $(TOPDIR)/Rules.make diff -uNr linux-org/drivers/char/nozomi/README linux/drivers/char/nozomi/README --- linux-org/drivers/char/nozomi/README 1970-01-01 01:00:00.000000000 +0100 +++ linux/drivers/char/nozomi/README 2006-02-06 15:30:07.380952352 +0100 @@ -0,0 +1,17 @@ +To build this driver for your kernel, please check: + +For kernel 2.6 +--------------- +Check the Makefile and run 'make'. + +For kernel 2.4 +---------- +make HW=PC_24 + +If you have troubles: +1) Have proper kernel headers/source as your running kernel. +2) Make sure this variable in Makefile is correct KERNELDIR = -I/path/to/kernel +3) If the /dev/noz[0-3] will not be created automatically, do: +mknod /dev/noz0 c 241 0; mknod /dev/noz1 c 241 1; +mknod /dev/noz2 c 241 2; mknod /dev/noz3 c 241 3 + diff -uNr linux-org/drivers/char/nozomi/TODO linux/drivers/char/nozomi/TODO --- linux-org/drivers/char/nozomi/TODO 1970-01-01 01:00:00.000000000 +0100 +++ linux/drivers/char/nozomi/TODO 2006-02-06 15:30:07.361955240 +0100 @@ -0,0 +1,6 @@ +* When having a noz* open and rmmod module or removing card, + the driver core dumps. + +* Does not yet support multiple cards. + +* Add a helpful description. diff -uNr linux-org/drivers/char/nozomi/kfifo.c linux/drivers/char/nozomi/kfifo.c --- linux-org/drivers/char/nozomi/kfifo.c 1970-01-01 01:00:00.000000000 +0100 +++ linux/drivers/char/nozomi/kfifo.c 2006-02-06 15:30:07.361955240 +0100 @@ -0,0 +1,189 @@ +/* + * A simple kernel FIFO implementation. + * + * Copyright (C) 2004 Stelian Pop + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#include +#include +#include +#include +#include "kfifo.h" + + +/** + * kfifo_init - allocates a new FIFO using a preallocated buffer + * @buffer: the preallocated buffer to be used. + * @size: the size of the internal buffer, this have to be a power of 2. + * @gfp_mask: get_free_pages mask, passed to kmalloc() + * @lock: the lock to be used to protect the fifo buffer + * + * Do NOT pass the kfifo to kfifo_free() after use ! Simply free the + * struct kfifo with kfree(). + */ +struct kfifo *kfifo_init(unsigned char *buffer, unsigned int size, + unsigned int gfp_mask, void *lock) +{ + struct kfifo *fifo; + + /* size must be a power of 2 */ + BUG_ON(size & (size - 1)); + + fifo = kmalloc(sizeof(struct kfifo), gfp_mask); + if (!fifo) + return ERR_PTR(-ENOMEM); + + fifo->buffer = buffer; + fifo->size = size; + fifo->in = fifo->out = 0; + + return fifo; +} + +/** + * kfifo_alloc - allocates a new FIFO and its internal buffer + * @size: the size of the internal buffer to be allocated. + * @gfp_mask: get_free_pages mask, passed to kmalloc() + * @lock: the lock to be used to protect the fifo buffer + * + * The size will be rounded-up to a power of 2. + */ +struct kfifo *kfifo_alloc(unsigned int size, unsigned int gfp_mask, void *lock) +{ + unsigned char *buffer; + struct kfifo *ret; + + /* + * round up to the next power of 2, since our 'let the indices + * wrap' tachnique works only in this case. + */ + if (size & (size - 1)) { + BUG_ON(size > 0x80000000); + printk("Do not support no power of two!\n"); + //size = roundup_pow_of_two(size); + } + + buffer = kmalloc(size, gfp_mask); + if (!buffer) + return ERR_PTR(-ENOMEM); + + ret = kfifo_init(buffer, size, gfp_mask, lock); + + if (IS_ERR(ret)) + kfree(buffer); + + return ret; +} + +/** + * kfifo_free - frees the FIFO + * @fifo: the fifo to be freed. + */ +void kfifo_free(struct kfifo *fifo) +{ + kfree(fifo->buffer); + kfree(fifo); +} + +/** + * __kfifo_put - puts some data into the FIFO, no locking version + * @fifo: the fifo to be used. + * @buffer: the data to be added. + * @len: the length of the data to be added. + * + * This function copies at most 'len' bytes from the 'buffer' into + * the FIFO depending on the free space, and returns the number of + * bytes copied. + * + * Note that with only one concurrent reader and one concurrent + * writer, you don't need extra locking to use these functions. + */ +unsigned int __kfifo_put(struct kfifo *fifo, + unsigned char *buffer, unsigned int len) +{ + unsigned int l; + + len = min(len, fifo->size - fifo->in + fifo->out); + + /* first put the data starting from fifo->in to buffer end */ + l = min(len, fifo->size - (fifo->in & (fifo->size - 1))); + memcpy(fifo->buffer + (fifo->in & (fifo->size - 1)), buffer, l); + + /* then put the rest (if any) at the beginning of the buffer */ + memcpy(fifo->buffer, buffer + l, len - l); + + fifo->in += len; + + return len; +} + +/** __kfifio_put_user works like __kfifo_put, but copies data from + * user space. + */ + +unsigned int __kfifo_put_user(struct kfifo *fifo, + unsigned char *buffer, unsigned int len) +{ + unsigned int l; + + len = min(len, fifo->size - fifo->in + fifo->out); + + /* first put the data starting from fifo->in to buffer end */ + l = min(len, fifo->size - (fifo->in & (fifo->size - 1))); + copy_from_user(fifo->buffer + (fifo->in & (fifo->size - 1)), buffer, l); + + /* then put the rest (if any) at the beginning of the buffer */ + copy_from_user(fifo->buffer, buffer + l, len - l); + + fifo->in += len; + + return len; +} + + + +/** + * __kfifo_get - gets some data from the FIFO, no locking version + * @fifo: the fifo to be used. + * @buffer: where the data must be copied. + * @len: the size of the destination buffer. + * + * This function copies at most 'len' bytes from the FIFO into the + * 'buffer' and returns the number of copied bytes. + * + * Note that with only one concurrent reader and one concurrent + * writer, you don't need extra locking to use these functions. + */ +unsigned int __kfifo_get(struct kfifo *fifo, + unsigned char *buffer, unsigned int len) +{ + unsigned int l; + + len = min(len, fifo->in - fifo->out); + + /* first get the data from fifo->out until the end of the buffer */ + l = min(len, fifo->size - (fifo->out & (fifo->size - 1))); + memcpy(buffer, fifo->buffer + (fifo->out & (fifo->size - 1)), l); + + /* then get the rest (if any) from the beginning of the buffer */ + memcpy(buffer + l, fifo->buffer, len - l); + + fifo->out += len; + + return len; +} diff -uNr linux-org/drivers/char/nozomi/kfifo.h linux/drivers/char/nozomi/kfifo.h --- linux-org/drivers/char/nozomi/kfifo.h 1970-01-01 01:00:00.000000000 +0100 +++ linux/drivers/char/nozomi/kfifo.h 2006-02-06 15:30:07.361955240 +0100 @@ -0,0 +1,67 @@ +/* + * A simple kernel FIFO implementation. + * + * Copyright (C) 2004 Stelian Pop + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ +#ifndef _LINUX_KFIFO_H +#define _LINUX_KFIFO_H + +#ifdef __KERNEL__ + +#include + +#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,0) +#warning "Don't include this header in 2.6, use header supplied with kernel" +#endif + +struct kfifo { + unsigned char *buffer; /* the buffer holding the data */ + unsigned int size; /* the size of the allocated buffer */ + unsigned int in; /* data is added at offset (in % size) */ + unsigned int out; /* data is extracted from off. (out % size) */ +}; + +extern struct kfifo *kfifo_init(unsigned char *buffer, unsigned int size, unsigned int gfp_mask, void *lock); +extern struct kfifo *kfifo_alloc(unsigned int size, unsigned int gfp_mask, void *lock); +extern void kfifo_free(struct kfifo *fifo); +extern unsigned int __kfifo_put(struct kfifo *fifo, unsigned char *buffer, unsigned int len); +extern unsigned int __kfifo_put_user(struct kfifo *fifo, unsigned char *buffer, unsigned int len); +extern unsigned int __kfifo_get(struct kfifo *fifo, unsigned char *buffer, unsigned int len); + +/** + * __kfifo_reset - removes the entire FIFO contents, no locking version + * @fifo: the fifo to be emptied. + */ +static inline void __kfifo_reset(struct kfifo *fifo) +{ + fifo->in = fifo->out = 0; +} + +/** + * __kfifo_len - returns the number of bytes available in the FIFO, no locking version + * @fifo: the fifo to be used. + */ +static inline unsigned int __kfifo_len(struct kfifo *fifo) +{ + return fifo->in - fifo->out; +} + +#else +#warning "don't include kernel headers in userspace" +#endif /* __KERNEL__ */ +#endif diff -uNr linux-org/drivers/char/nozomi/nozomi.c linux/drivers/char/nozomi/nozomi.c --- linux-org/drivers/char/nozomi/nozomi.c 1970-01-01 01:00:00.000000000 +0100 +++ linux/drivers/char/nozomi/nozomi.c 2006-02-06 15:30:07.379952504 +0100 @@ -0,0 +1,2238 @@ + +/* nozomi.c -- HSDPA driver Broadband Wireless Data Card - Globe Trotter + * + * Written by: Ulf Jakobsson, + * Jan Åkerfeldt, + * Stefan Thomasson, + * + * Maintained by: Paul Hardwick, p.hardwick@option.com + * + * Source has been ported from an implementation made by Filip Aben, f.aben@option.com + * + * -------------------------------------------------------------------------- + + Copyright (c) 2005 Option Wireless Sweden AB + All rights Reserved. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + * -------------------------------------------------------------------------- + */ + +/* CHANGELOG + * + * See CHANGELOG in this package + */ + +/* TODO + * + * See TODO file in this package + */ + + +/* + * TODO2 fix the send_reset_token() routine not to use the fixed start address + */ + + + +#include + +#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,0) +#define KERNEL_2_6 +#elif LINUX_VERSION_CODE > KERNEL_VERSION(2,4,0) +#define KERNEL_2_4 +#endif + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#define VERSION_STRING DRIVER_DESC " (build date: " __DATE__ " " __TIME__ ")" + +#ifdef KERNEL_2_6 +#include +#else +#include "kfifo.h" +#endif + +#ifdef KERNEL_2_4 +#ifndef IRQ_NONE +#define IRQ_NONE +#endif +#ifndef IRQ_HANDLED +#define IRQ_HANDLED +typedef void irqreturn_t; +#endif +#endif + +#ifndef CONFIG_PCI +#error "This driver needs PCI support to be available" +#endif + +/* Macros definitions */ + +/* Enable this to have a lot of debug printouts */ +/*#define NOZOMI_DEBUG */ + +/* Default debug printout level */ +#define NOZOMI_DEBUG_LEVEL 0xffff + +#define P_BUF_SIZE 128 +#define NFO( _err_flag_, args...) \ + do{ \ + char t_m_p_[P_BUF_SIZE]; \ + snprintf(t_m_p_, sizeof(t_m_p_), ##args); \ + printk( _err_flag_ "[%d] %s(): %s\n", __LINE__, __FUNCTION__, t_m_p_); \ +} while(0) + +#define INFO(args...) NFO(KERN_INFO, ##args) +#define ERR(args...) NFO( KERN_ERR, ##args) + +#define D1(args...) D_(0x01, ##args) +#define D2(args...) D_(0x02, ##args) +#define D3(args...) D_(0x04, ##args) +#define D4(args...) D_(0x08, ##args) +#define D5(args...) D_(0x10, ##args) +#define D6(args...) D_(0x20, ##args) +#define D7(args...) D_(0x40, ##args) +#define D8(args...) D_(0x80, ##args) + + +#ifdef NOZOMI_DEBUG +#define D_(lvl, args...) D(lvl, ##args) + /* Do we need this settable at runtime? */ +static int nzdebug = NOZOMI_DEBUG_LEVEL; + +#define D(lvl, args...) do{if(lvl & nzdebug) NFO(KERN_INFO, ##args );}while(0) +#define D_(lvl, args...) D(lvl, ##args) + +/* These printouts are always printed */ + +#else + static const int nzdebug = 0; +#define D_(lvl, args...) +#endif + +/* TODO: rewrite to optimize macros... */ +#define SET_FCR(value__) \ + do { \ + writew((value__), (void*) (dc->REG_FCR )); \ +} while(0) + +#define SET_IER(value__, mask__) \ + do { \ + dc->ier_last_written = (dc->ier_last_written & ~mask__) | (value__ & mask__ );\ + writew( dc->ier_last_written, (void*) (dc->REG_IER));\ +} while(0) + +#define GET_IER(read_val__) \ + do { \ + (read_val__) = readw((void*) (dc->REG_IER));\ +} while(0) + +#define GET_IIR(read_val__) \ + do { \ + (read_val__) = readw((void*) (dc->REG_IIR));\ +} while(0) + +#define GET_MEM(value__, addr__, length__) \ + do { \ + read_mem32( (u32*) (value__), (u32) (addr__), (length__));\ +} while(0) + +#define GET_MEM_BUF(value__, addr__, length__) \ + do { \ + read_mem32_buf( (u32*) (value__), (u32) (addr__), (length__));\ +} while(0) + +#define SET_MEM(addr__, value__, length__) \ + do { \ + write_mem32( (addr__), (u32*) (value__), (length__));\ +} while(0) + +#define SET_MEM_BUF(addr__, value__, length__) \ + do { \ + write_mem32_buf( (addr__), (u32*) (value__), (length__));\ +} while(0) + + +#define TMP_BUF_MAX 256 + +#define DUMP(buf__,len__) \ + do { \ + char tbuf[TMP_BUF_MAX]={0};\ + if (len__>1) {\ + snprintf(tbuf, len__ > TMP_BUF_MAX ? TMP_BUF_MAX : len__, "%s",buf__);\ + if(tbuf[len__-2] == '\r') {\ + tbuf[len__-2] = 'r';\ + }\ + D1( "SENDING: '%s' (%d+n)", tbuf, len__);\ + } else {\ + D1( "SENDING: '%s' (%d)", tbuf, len__);\ + }\ +} while(0) + +#define RELEVANT_IFLAG(iflag) ((iflag) & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK)) + + +/* Defines */ +#define NOZOMI_NAME "nozomi" +#define NOZOMI_NAME_TTY "nozomi_tty" +#define DRIVER_DESC "Nozomi driver" + +#define NTTY_TTY_MAJOR 241 +#define NTTY_TTY_MINORS MAX_PORT +#define NTTY_FIFO_BUFFER_SIZE 8192 + +/* Must be power of 2 */ +#define FIFO_BUFFER_SIZE_UL 8192 + +/* Size of tmp send buffer to card */ +#define SEND_BUF_MAX 1024 +#define RECEIVE_BUF_MAX 4 + +/* Our fake UART values */ +#define MCR_DTR 0x01 +#define MCR_RTS 0x02 +#define MCR_LOOP 0x04 +#define MSR_CTS 0x08 +#define MSR_CD 0x10 +#define MSR_RI 0x20 +#define MSR_DSR 0x40 + +/* Define all types of vendors and devices to support */ +#define VENDOR1 0x1931 /* Vendor Option */ +#define DEVICE1 0x000c /* HSDPA card */ + +#define R_IIR 0x0000 /* Interrupt Identity Register */ +#define R_FCR 0x0000 /* Flow Control Register */ +#define R_IER 0x0004 /* Interrupt Enable Register */ + +#define CONFIG_MAGIC 0xEFEFFEFE +#define TOGGLE_VALID 0x0000 + +/* Definition of interrupt tokens */ +#define MDM_DL1 0x0001 +#define MDM_UL1 0x0002 +#define MDM_DL2 0x0004 +#define MDM_UL2 0x0008 +#define DIAG_DL1 0x0010 +#define DIAG_DL2 0x0020 +#define DIAG_UL 0x0040 +#define APP1_DL 0x0080 +#define APP1_UL 0x0100 +#define APP2_DL 0x0200 +#define APP2_UL 0x0400 +#define CTRL_DL 0x0800 +#define CTRL_UL 0x1000 +#define RESET 0x8000 + +#define MDM_DL (MDM_DL1 | MDM_DL2) +#define MDM_UL (MDM_UL1 | MDM_UL2) +#define DIAG_DL (DIAG_DL1 | DIAG_DL2) + +/* modem signal definition */ +#define CTRL_DSR 0x0001 +#define CTRL_DCD 0x0002 +#define CTRL_RI 0x0004 +#define CTRL_CTS 0x0008 + +#define CTRL_DTR 0x0001 +#define CTRL_RTS 0x0002 + +#define MAX_PORT 4 +#define NOZOMI_MAX_PORTS 5 + +/* Type definitions */ + +/* There are two types of nozomi cards, one with 2048 memory and with 8192 memory */ +typedef enum { + F32_2 = 2048, /* Has 512 bytes downlink and uplink * 2 -> 2048 */ + F32_8 = 9192, /* Has 3072 bytes downlink and 1024 bytes uplink * 2 -> 8192 */ +} card_type_t; + +/* Two different toggle channels exist */ +typedef enum { + CH_A=0, + CH_B=1, +} channel_t; + +/* Port definition for the card regarding flow control */ +typedef enum { + CTRL_CMD = 0x00, + CTRL_MDM = 0x01, + CTRL_DIAG = 0x02, + CTRL_APP1 = 0x03, + CTRL_APP2 = 0x04, + CTRL_ERROR = -1, +} ctrl_port_t; + +/* Ports that the nozomi has */ +typedef enum { + PORT_MDM = 0, + PORT_DIAG= 1, + PORT_APP1= 2, + PORT_APP2= 3, + PORT_CTRL= 4, + PORT_ERROR=-1, +} port_type_t; + +#ifdef __ARMEB__ +/* Big endian */ + +typedef struct { + unsigned enabled : 5; /* Toggle fields are valid if enabled is 0, else A-channels + must always be used. */ + unsigned diag_dl : 1; + unsigned mdm_dl : 1; + unsigned mdm_ul : 1; +} __attribute__ ((packed)) toggles_t; + +/* Configuration table to read at startup of card */ +/* Is for now only needed during initialization phase */ +typedef struct { + u32 signature; + u16 product_information; + u16 version; + u8 pad3[3]; + toggles_t toggle; + u8 pad1[4]; + u16 dl_mdm_len1; /* If this is 64, it can hold 60 bytes + 4 that is length field */ + u16 dl_start; + + u16 dl_diag_len1; + u16 dl_mdm_len2; /* If this is 64, it can hold 60 bytes + 4 that is length field */ + u16 dl_app1_len; + + u16 dl_diag_len2; + u16 dl_ctrl_len; + u16 dl_app2_len; + u8 pad2[16]; + u16 ul_mdm_len1; + u16 ul_start; + u16 ul_diag_len; + u16 ul_mdm_len2; + u16 ul_app1_len; + u16 ul_app2_len; + u16 ul_ctrl_len; +} __attribute__((packed)) config_table_t; + +/* This stores all control downlink flags */ +typedef struct { + u8 port; + unsigned reserved : 4; + unsigned CTS : 1; + unsigned RI : 1; + unsigned DCD : 1; + unsigned DSR : 1; +} __attribute__ ((packed)) ctrl_dl_t; + +/* This stores all control uplink flags */ +typedef struct { + u8 port; + unsigned reserved : 6; + unsigned RTS : 1; + unsigned DTR : 1; +} __attribute__ ((packed)) ctrl_ul_t; + +#else +/* Little endian */ + +/* This represents the toggle information */ +typedef struct { + unsigned mdm_ul : 1; + unsigned mdm_dl : 1; + unsigned diag_dl : 1; + unsigned enabled : 5; /* Toggle fields are valid if enabled is 0, else A-channels + must always be used. */ +} __attribute__ ((packed)) toggles_t; + +/* Configuration table to read at startup of card */ +typedef struct { + u32 signature; + u16 version; + u16 product_information; + toggles_t toggle; + u8 pad1[7]; + u16 dl_start; + u16 dl_mdm_len1; /* If this is 64, it can hold 60 bytes + 4 that is length field */ + u16 dl_mdm_len2; + u16 dl_diag_len1; + u16 dl_diag_len2; + u16 dl_app1_len; + u16 dl_app2_len; + u16 dl_ctrl_len; + u8 pad2[16]; + u16 ul_start; + u16 ul_mdm_len2; + u16 ul_mdm_len1; + u16 ul_diag_len; + u16 ul_app1_len; + u16 ul_app2_len; + u16 ul_ctrl_len; +} __attribute__((packed)) config_table_t; + +/* This stores all control downlink flags */ +typedef struct { + unsigned DSR : 1; + unsigned DCD : 1; + unsigned RI : 1; + unsigned CTS : 1; + unsigned reserverd : 4; + u8 port; +} __attribute__ ((packed)) ctrl_dl_t; + +/* This stores all control uplink flags */ +typedef struct { + unsigned DTR : 1; + unsigned RTS : 1; + unsigned reserved : 6; + u8 port; +} __attribute__ ((packed)) ctrl_ul_t; +#endif + +/* This holds all information that is needed regarding a port */ +typedef struct { + u8 update_flow_control; + ctrl_ul_t ctrl_ul; + ctrl_dl_t ctrl_dl; + struct kfifo *fifo_ul; + u32 dl_addr[2]; + u32 dl_size[2]; + u8 toggle_dl; + u32 ul_addr[2]; + u32 ul_size[2]; + u8 toggle_ul; + u16 token_dl; + + struct tty_struct *tty; + int tty_open_count; + struct semaphore tty_sem; + wait_queue_head_t tty_wait; + struct async_icount tty_icount; + int tty_index; + u32 rx_data, tx_data; + u8 tty_dont_flip; + +} port_t; + +/* Private data one for each card in the system */ +typedef struct { + u32 base_addr; + u8 closing; + + /* Register addresses */ + u32 REG_IIR; + u32 REG_FCR; + u32 REG_IER; + + volatile u16 ier_last_written; + card_type_t card_type; + config_table_t config_table; /* Configuration table */ + struct pci_dev *pdev; + port_t port[NOZOMI_MAX_PORTS]; + u8 *send_buf; + + struct tty_driver tty_driver; + +#ifdef KERNEL_2_4 + struct tty_struct *tty_table[NTTY_TTY_MINORS]; + struct tq_struct tty_flip_queue; + s32 tty_refcount; +#endif +#ifdef KERNEL_2_6 + struct workqueue_struct *tty_flip_wq; + struct work_struct tty_flip_wq_struct; +#endif + + struct termios *tty_termios[NTTY_TTY_MINORS]; + struct termios *tty_termios_locked[NTTY_TTY_MINORS]; + spinlock_t spin_mutex; + + u32 open_ttys; + struct proc_dir_entry *proc_entry; + +} dc_t; + +/* This is a data packet that is read or written to/from card */ +typedef struct { + u32 size; /* size is the length of the data buffer */ + u8 *data; +} __attribute__ ((packed)) buf_t; + +/* Function declarations */ +static int ntty_tty_init(dc_t *dc); + +static void tty_flip_queue_function(void *tmp_dc); + +/* Global variables */ +static struct pci_device_id nozomi_pci_tbl[] __devinitdata = { + {VENDOR1, DEVICE1}, + {0, } +}; + +/* Used to store interrupt variables */ +typedef struct { + volatile u16 read_iir; /* Holds current interrupt tokens */ +} irq_t; + +MODULE_DEVICE_TABLE(pci, nozomi_pci_tbl); + +/* Representing the pci device of interest */ +static int cards_found = 0; +static int cards_initialized = 0; +dc_t* my_dev = NULL; +struct pci_dev *my_pdev = NULL; +irq_t my_irq; + +#define CARD_CHECK(rval) { \ + if (cards_found == 0 || cards_found != cards_initialized) { \ + ERR("Operation requested on uninitialized nozomi card."); \ + return rval; \ + } } + + +static inline dc_t* get_dc_by_pdev(struct pci_dev* pdev) { + return my_dev; +} + +static inline dc_t* get_dc_by_index(s32 index ) { + return my_dev; +} + +static inline s32 get_index(struct tty_struct *tty) { +#ifdef KERNEL_2_6 + return tty->index; +#else + return MINOR(tty->device) - tty->driver.minor_start; +#endif +} + +static inline port_t* get_port_by_tty(struct tty_struct *tty) { + return &my_dev->port[ get_index(tty) ]; +} + +static inline dc_t* get_dc_by_tty(struct tty_struct *tty ) { + return my_dev; +} + + +/* TODO: */ +/* -Optimize */ +/* -Rewrite cleaner */ +static void read_mem32(u32 *buf, u32 mem_addr_start, u32 size_bytes) { + u32 i = 0; + u32* ptr = (u32*) mem_addr_start; + u16* buf16; + + /* 2 bytes */ + if (size_bytes == 2) { + buf16 = (u16*) buf; + *buf16 = readw( ptr ); + return; + } + + while (i < size_bytes) { + if ( size_bytes - i == 2) { + /* Handle 2 bytes in the end */ + buf16 = (u16*) buf; + *(buf16) = readw( ptr ); + i+=2; + } else { + /* Read 4 bytes */ + *(buf) = readl( ptr ); + i+=4; + } + buf++; ptr++; + } +} + +/* TODO: */ +/* - Rewrite cleaner */ +/* - merge with read_mem32() */ +static void read_mem32_buf(u32 *buf, u32 mem_addr_start, u32 size_bytes) { +#ifdef __ARMEB__ + u32 i = 0; + u32* ptr = (u32*) mem_addr_start; + u16* buf16; + + /* 2 bytes */ + if (size_bytes == 2) { + buf16 = (u16*) buf; + *buf16 = __le16_to_cpu( readw( ptr )); + return; + } + + while (i < size_bytes) { + if ( size_bytes - i == 2) { + /* Handle 2 bytes in the end */ + buf16 = (u16*) buf; + *(buf16) = __le16_to_cpu( readw( ptr )); + i+=2; + } else { + /* Read 4 bytes */ + *(buf) = __le32_to_cpu( readl( ptr )); + i+=4; + } + buf++; ptr++; + } +#else + read_mem32(buf, mem_addr_start, size_bytes); +#endif +} + +/* TODO: */ +/* -Optimize */ +/* -Rewrite cleaner */ +static u32 write_mem32(u32 mem_addr_start, u32 *buf, u32 size_bytes) { + u32 i = 0; + u32* ptr = (u32*) mem_addr_start; + u16* buf16; + + /* 2 bytes */ + if (size_bytes == 2) { + buf16 = (u16*) buf; + writew( *buf16, ptr); + return 2; + } + + while (i < size_bytes) { + if ( size_bytes - i == 2) { + /* 2 bytes */ + buf16 = (u16*) buf; + writew( *buf16, ptr); + i+=2; + } else { + /* 4 bytes */ + writel( *buf, ptr ); + i += 4; + } + buf++; ptr++; + } + return size_bytes; +} + +/* Todo: */ +/* - Merge with write_mem32() */ +static u32 write_mem32_buf(u32 mem_addr_start, u32 *buf, u32 size_bytes) { +#ifdef __ARMEB__ + u32 i = 0; + u32* ptr = (u32*) mem_addr_start; + u16* buf16; + + /* 2 bytes */ + if (size_bytes == 2) { + buf16 = (u16*) buf; + writew( __le16_to_cpu(*buf16), ptr); + return 2; + } + + while (i < size_bytes) { + if ( size_bytes - i == 2) { + /* 2 bytes */ + buf16 = (u16*) buf; + writew( __le16_to_cpu(*buf16), ptr); + i+=2; + } else { + /* 4 bytes */ + writel( __cpu_to_le32( *buf ), ptr ); + i += 4; + } + buf++; ptr++; + } + return size_bytes; +#else + return write_mem32(mem_addr_start, buf, size_bytes); +#endif +} + +/* Setup pointers to different channels and also setup buffer sizes. */ +static void setup_memory(dc_t *dc) { + + u32 offset = dc->base_addr + dc->config_table.dl_start; + /* The length reported is including the length field of 4 bytes, hence subtract with 4. */ + u16 buff_offset = 4; + + /* Modem port dl configuration */ + dc->port[PORT_MDM].dl_addr[CH_A] = offset; + dc->port[PORT_MDM].dl_addr[CH_B] = (offset += dc->config_table.dl_mdm_len1); + dc->port[PORT_MDM].dl_size[CH_A] = dc->config_table.dl_mdm_len1 - buff_offset; + dc->port[PORT_MDM].dl_size[CH_B] = dc->config_table.dl_mdm_len2 - buff_offset; + + /* Diag port dl configuration */ + dc->port[PORT_DIAG].dl_addr[CH_A] = (offset += dc->config_table.dl_mdm_len2); + dc->port[PORT_DIAG].dl_size[CH_A] = dc->config_table.dl_diag_len1 - buff_offset; + dc->port[PORT_DIAG].dl_addr[CH_B] = (offset += dc->config_table.dl_diag_len1); + dc->port[PORT_DIAG].dl_size[CH_B] = dc->config_table.dl_diag_len2 - buff_offset; + + /* App1 port dl configuration */ + dc->port[PORT_APP1].dl_addr[CH_A] = (offset += dc->config_table.dl_diag_len2); + dc->port[PORT_APP1].dl_size[CH_A] = dc->config_table.dl_app1_len - buff_offset; + + /* App2 port dl configuration */ + dc->port[PORT_APP2].dl_addr[CH_A] = (offset += dc->config_table.dl_app1_len); + dc->port[PORT_APP2].dl_size[CH_A] = dc->config_table.dl_app2_len - buff_offset; + + /* Ctrl dl configuration */ + dc->port[PORT_CTRL].dl_addr[CH_A] = (offset += dc->config_table.dl_app2_len); + dc->port[PORT_CTRL].dl_size[CH_A] = dc->config_table.dl_ctrl_len - buff_offset; + + + /* Modem Port ul configuration */ + dc->port[PORT_MDM].ul_addr[CH_A] = (offset = dc->base_addr + dc->config_table.ul_start); + dc->port[PORT_MDM].ul_size[CH_A] = dc->config_table.ul_mdm_len1 - buff_offset; + dc->port[PORT_MDM].ul_addr[CH_B] = (offset += dc->config_table.ul_mdm_len1); + dc->port[PORT_MDM].ul_size[CH_B] = dc->config_table.ul_mdm_len2 - buff_offset; + + /* Diag port ul configuration */ + dc->port[PORT_DIAG].ul_addr[CH_A] = (offset += dc->config_table.ul_mdm_len2); + dc->port[PORT_DIAG].ul_size[CH_A] = dc->config_table.ul_diag_len - buff_offset; + + /* App1 port ul configuration */ + dc->port[PORT_APP1].ul_addr[CH_A] = (offset += dc->config_table.ul_diag_len); + dc->port[PORT_APP1].ul_size[CH_A] = dc->config_table.ul_app1_len - buff_offset; + + /* App2 port ul configuration */ + dc->port[PORT_APP2].ul_addr[CH_A] = (offset += dc->config_table.ul_app1_len); + dc->port[PORT_APP2].ul_size[CH_A] = dc->config_table.ul_app2_len - buff_offset; + + /* Ctrl ul configuration */ + dc->port[PORT_CTRL].ul_addr[CH_A] = (offset += dc->config_table.ul_app2_len); + dc->port[PORT_CTRL].ul_size[CH_A] = dc->config_table.ul_ctrl_len - buff_offset; + offset = dc->config_table.ul_start; +} + +/* Dump config table under initalization phase */ +#ifdef NOZOMI_DEBUG +static void dump_table(dc_t *dc) { + D3("signature: 0x%08X", dc->config_table.signature); + D3("version: 0x%04X", dc->config_table.version); + D3("product_information: 0x%04X", dc->config_table.product_information); + D3("toggle enabled: %d", dc->config_table.toggle.enabled); + D3("toggle up_mdm: %d", dc->config_table.toggle.mdm_ul); + D3("toggle dl_mdm: %d", dc->config_table.toggle.mdm_dl); + D3("toggle dl_dbg: %d", dc->config_table.toggle.diag_dl); + + D3("dl_start: 0x%04X", dc->config_table.dl_start); + D3("dl_mdm_len0: 0x%04X, %d", dc->config_table.dl_mdm_len1, dc->config_table.dl_mdm_len1); + D3("dl_mdm_len1: 0x%04X, %d", dc->config_table.dl_mdm_len2, dc->config_table.dl_mdm_len2); + D3("dl_diag_len0: 0x%04X, %d", dc->config_table.dl_diag_len1, dc->config_table.dl_diag_len1); + D3("dl_diag_len1: 0x%04X, %d", dc->config_table.dl_diag_len2, dc->config_table.dl_diag_len2); + D3("dl_app1_len: 0x%04X, %d", dc->config_table.dl_app1_len, dc->config_table.dl_app1_len); + D3("dl_app2_len: 0x%04X, %d", dc->config_table.dl_app2_len, dc->config_table.dl_app2_len); + D3("dl_ctrl_len: 0x%04X, %d", dc->config_table.dl_ctrl_len, dc->config_table.dl_ctrl_len); + D3("ul_start: 0x%04X, %d", dc->config_table.ul_start, dc->config_table.ul_start); + D3("ul_mdm_len[0]: 0x%04X, %d", dc->config_table.ul_mdm_len1, dc->config_table.ul_mdm_len1); + D3("ul_mdm_len[1]: 0x%04X, %d", dc->config_table.ul_mdm_len2, dc->config_table.ul_mdm_len2); + D3("ul_diag_len: 0x%04X, %d", dc->config_table.ul_diag_len, dc->config_table.ul_diag_len); + D3("ul_app1_len: 0x%04X, %d", dc->config_table.ul_app1_len, dc->config_table.ul_app1_len); + D3("ul_app2_len: 0x%04X, %d", dc->config_table.ul_app2_len, dc->config_table.ul_app2_len); + D3("ul_ctrl_len: 0x%04X, %d", dc->config_table.ul_ctrl_len, dc->config_table.ul_ctrl_len); +} +#endif + +/* Read configuration table from card under intalization phase */ +/* Returns 1 if ok, else 0 */ +static int nozomi_read_config_table(dc_t *dc) { + + if (cards_found > 0 && cards_found == cards_initialized) { + return 1; + } + + GET_MEM( &dc->config_table, dc->base_addr + 0, sizeof(config_table_t)); + + /* D1( "0x%08X == 0x%08X ", dc->config_table.signature, CONFIG_MAGIC); */ + + if( dc->config_table.signature != CONFIG_MAGIC ) { + ERR("ConfigTable Bad! 0x%08X != 0x%08X", dc->config_table.signature, CONFIG_MAGIC); + return 0; + } + + if( (dc->config_table.version == 0) || (dc->config_table.toggle.enabled == TOGGLE_VALID) ) { + int i; + INFO( "Second phase, configuring card"); + + setup_memory(dc); + + dc->port[PORT_MDM].toggle_ul = dc->config_table.toggle.mdm_ul; + dc->port[PORT_MDM].toggle_dl = dc->config_table.toggle.mdm_dl; + dc->port[PORT_DIAG].toggle_dl = dc->config_table.toggle.diag_dl; + D1( "toggle ports: MDM UL:%d MDM DL:%d, DIAG DL:%d", + dc->port[PORT_MDM].toggle_ul, + dc->port[PORT_MDM].toggle_dl, + dc->port[PORT_DIAG].toggle_dl); + +#ifdef NOZOMI_DEBUG + dump_table(dc); +#endif + for (i=PORT_MDM; i< MAX_PORT;i++) { + dc->port[i].fifo_ul = kfifo_alloc( FIFO_BUFFER_SIZE_UL, GFP_ATOMIC , NULL); + memset( &dc->port[i].ctrl_dl, 0, sizeof (ctrl_dl_t)); + memset( &dc->port[i].ctrl_ul, 0, sizeof (ctrl_ul_t)); + } + + /* Enable control channel */ + SET_IER( CTRL_DL, CTRL_DL ); + + INFO("Initialization OK!"); + cards_initialized++; + return 1; + } + + if( (dc->config_table.version > 0) && (dc->config_table.toggle.enabled != TOGGLE_VALID ) ) { + u32 offset = 0; + INFO( "First phase: pushing upload buffers, clearing download"); + + INFO("Version of card: %d", dc->config_table.version); + + /* Here we should disable all I/O over F32. */ + setup_memory(dc); + + /* We should send ALL channel pair tokens back along with reset token */ + + /* push upload modem buffers */ + SET_MEM( dc->port[PORT_MDM].ul_addr[CH_A], &offset, 4); + SET_MEM( dc->port[PORT_MDM].ul_addr[CH_B], &offset, 4); + + SET_FCR( MDM_UL | DIAG_DL | MDM_DL ); + + D1( "First phase done"); + } + + return 1; +} + +/* Enable uplink interrupts */ +static void enable_transmit_ul( port_type_t port , dc_t *dc ) { + + switch( port ) { + case PORT_MDM: SET_IER( MDM_UL , MDM_UL ); break; + case PORT_DIAG: SET_IER( DIAG_UL, DIAG_UL ); break; + case PORT_APP1: SET_IER( APP1_UL, APP1_UL ); break; + case PORT_APP2: SET_IER( APP2_UL, APP2_UL ); break; + case PORT_CTRL: SET_IER( CTRL_UL, CTRL_UL ); break; + default: + ERR("Called with wrong port?"); + break; + }; +} + +/* Disable uplink interrupts */ +static void disable_transmit_ul( port_type_t port , dc_t *dc ) { + + switch( port ) { + case PORT_MDM: SET_IER( 0 ,MDM_UL ); break; + case PORT_DIAG: SET_IER( 0, DIAG_UL ); break; + case PORT_APP1: SET_IER( 0, APP1_UL ); break; + case PORT_APP2: SET_IER( 0, APP2_UL ); break; + case PORT_CTRL: SET_IER( 0, CTRL_UL ); break; + default: + ERR("Called with wrong port?"); + break; + }; +} + +/* Enable downlink interrupts */ +static void enable_transmit_dl( port_type_t port , dc_t *dc ) { + + switch( port ) { + case PORT_MDM: SET_IER( MDM_DL , MDM_DL ); break; + case PORT_DIAG: SET_IER( DIAG_DL, DIAG_DL ); break; + case PORT_APP1: SET_IER( APP1_DL, APP1_DL ); break; + case PORT_APP2: SET_IER( APP2_DL, APP2_DL ); break; + case PORT_CTRL: SET_IER( CTRL_DL, CTRL_DL ); break; + default: + ERR("Called with wrong port?"); + break; + }; +} + +/* Disable downlink interrupts */ +static void disable_transmit_dl( port_type_t port , dc_t *dc ) { + + switch( port ) { + case PORT_MDM: SET_IER( 0 ,MDM_DL ); break; + case PORT_DIAG: SET_IER( 0, DIAG_DL ); break; + case PORT_APP1: SET_IER( 0, APP1_DL ); break; + case PORT_APP2: SET_IER( 0, APP2_DL ); break; + case PORT_CTRL: SET_IER( 0, CTRL_DL ); break; + default: + ERR("Called with wrong port?"); + break; + }; +} + +/* Return 1 - send buffer to card and ack. */ +/* Return 0 - don't ack, don't send buffer to card. */ +int send_data( port_type_t index, dc_t *dc ) { + u32 size = 0; + port_t *port = &dc->port[index]; + u8 toggle = port->toggle_ul; + u32 addr = port->ul_addr[toggle]; + u32 ul_size = port->ul_size[toggle]; + struct tty_struct *tty = port->tty; + + if (index >= NTTY_TTY_MINORS) { + ERR("Called with wrong index?"); + return 0; + } + + /* Get data from tty and place in buf for now */ + size = __kfifo_get( port->fifo_ul, dc->send_buf, ul_size < SEND_BUF_MAX ? ul_size : SEND_BUF_MAX ); + + if (size == 0) { + D4("No more data to send, disable link:"); + return 0; + } + + port->tx_data += size; + + /* DUMP(buf, size); */ + + /* Write length + data */ + SET_MEM( addr, &size, 4 ); + SET_MEM_BUF( addr + 4, dc->send_buf, size); + + if (port->tty) { + if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup) { + tty->ldisc.write_wakeup(tty); + } + wake_up_interruptible(&tty->write_wait); + } + + return 1; +} + +/* If all data has been read, return 1, else 0 */ +static int receive_data( port_type_t index, dc_t* dc ) { + u8 buf[RECEIVE_BUF_MAX] = {0}; + int size; + u32 offset = 4; + port_t *port = &dc->port[index]; + u8 toggle = port->toggle_dl; + u32 addr = port->dl_addr[toggle]; + struct tty_struct *tty = port->tty; + int i; + + if ( !tty ) { + D1("tty not open for port: %d?", index); + return 1; + } + + if (test_bit(TTY_DONT_FLIP, &tty->flags)) { + D6("TTY_DONT_FLIP set!! %d", index); + /* Here we disable interrupt for that port and schedule */ +/* task. Task wakes up a little bit later and enables interrupt.. */ + port->tty_dont_flip = 1; + disable_transmit_dl(index, dc); +#ifdef KERNEL_2_4 + schedule_task(&dc->tty_flip_queue); +#endif +#ifdef KERNEL_2_6 + if (!queue_work(dc->tty_flip_wq, &dc->tty_flip_wq_struct)) { + ERR("Call to queue_work() failed."); + } +#endif + return 0; + } + + GET_MEM( &size, addr, 4 ); + /* D1( "%d bytes port: %d", size, index); */ + + if ( test_bit( TTY_THROTTLED, & tty->flags) ) { + D1("No room in tty, don't read data, don't ack interrupt, disable interrupt"); + + /* disable interrupt in downlink... */ + disable_transmit_dl(index, dc); + return 0; + } + + if (size == 0) { + ERR("size == 0?"); + return 1; + } + + while( size > 0 ) { + GET_MEM_BUF(buf, addr + offset, 4); + + i = 0; + while (i < 4 && size > 0) { + if (tty->flip.count >= TTY_FLIPBUF_SIZE) { + tty_flip_buffer_push(tty); + } + tty_insert_flip_char(tty, buf[i], TTY_NORMAL); + port->rx_data++; + i++; + size--; + } + + offset += 4; + } + + tty_flip_buffer_push(tty); + + return 1; +} + +/* Debug for interrupts */ +#ifdef NOZOMI_DEBUG +static char* interrupt2str( u16 interrupt) { + static char buf[TMP_BUF_MAX]; + char *p = buf; + + interrupt & MDM_DL1 ? p += snprintf(p, TMP_BUF_MAX, "MDM_DL1 "):0; + interrupt & MDM_DL2 ? p += snprintf(p, TMP_BUF_MAX, "MDM_DL2 "):0; + + interrupt & MDM_UL1 ? p += snprintf(p, TMP_BUF_MAX, "MDM_UL1 "):0; + interrupt & MDM_UL2 ? p += snprintf(p, TMP_BUF_MAX, "MDM_UL2 "):0; + + interrupt & DIAG_DL1 ? p += snprintf(p, TMP_BUF_MAX, "DIAG_DL1 "):0; + interrupt & DIAG_DL2 ? p += snprintf(p, TMP_BUF_MAX, "DIAG_DL2 "):0; + + interrupt & DIAG_UL ? p += snprintf(p, TMP_BUF_MAX, "DIAG_UL "):0; + + interrupt & APP1_DL ? p += snprintf(p, TMP_BUF_MAX, "APP1_DL "):0; + interrupt & APP2_DL ? p += snprintf(p, TMP_BUF_MAX, "APP2_DL "):0; + + interrupt & APP1_UL ? p += snprintf(p, TMP_BUF_MAX, "APP1_UL "):0; + interrupt & APP2_UL ? p += snprintf(p, TMP_BUF_MAX, "APP2_UL "):0; + + interrupt & CTRL_DL ? p += snprintf(p, TMP_BUF_MAX, "CTRL_DL "):0; + interrupt & CTRL_UL ? p += snprintf(p, TMP_BUF_MAX, "CTRL_UL "):0; + + interrupt & RESET ? p += snprintf(p, TMP_BUF_MAX, "RESET "):0; + + return buf; +} +#endif + +/* Receive flow control */ +/* Return 1 - If ok, else 0 */ +static int receive_flow_control( dc_t *dc, irq_t *m) { + port_type_t port = PORT_MDM; + ctrl_dl_t ctrl_dl; + ctrl_dl_t old_ctrl; + u16 enable_ier = 0; + + GET_MEM( &ctrl_dl, dc->port[PORT_CTRL].dl_addr[CH_A], 2); + + switch( ctrl_dl.port ) { + case CTRL_CMD: + D1( "The Base Band sends this value as a response to a request for IMSI detach sent" + " over the control channel uplink (see section 7.6.1)."); + break; + case CTRL_MDM: port = PORT_MDM; enable_ier = MDM_DL; break; + case CTRL_DIAG: port = PORT_DIAG; enable_ier = DIAG_DL; break; + case CTRL_APP1: port = PORT_APP1; enable_ier = APP1_DL; break; + case CTRL_APP2: port = PORT_APP2; enable_ier = APP2_DL; break; + default: + ERR("ERROR: flow control received for non-existing port"); + return 0; + }; + + D1( "0x%04X->0x%04X", *((u16*) &dc->port[port].ctrl_dl), *((u16*)&ctrl_dl)); + + old_ctrl = dc->port[port].ctrl_dl; + dc->port[port].ctrl_dl = ctrl_dl; + + if ( old_ctrl.CTS == 1 && ctrl_dl.CTS == 0 ) { + D1( "Disable interrupt (0x%04X) on port: %d", enable_ier, port); + disable_transmit_ul(port, dc); + + } else if ( old_ctrl.CTS == 0 && ctrl_dl.CTS == 1 ) { + + if ( __kfifo_len(dc->port[port].fifo_ul) ) { + D1( "Enable interrupt (0x%04X) on port: %d", enable_ier, port); + D1( "Data in buffer [%d], enable transmit! ", __kfifo_len(dc->port[port].fifo_ul) ); + enable_transmit_ul( port, dc ); + } else { + D1( "No data in buffer..."); + } + } + + if(*(u16*)&old_ctrl == *(u16*)&ctrl_dl) + { + D1( " No change in mctrl"); + return 1; + } + /* Update statistics */ + if(old_ctrl.CTS != ctrl_dl.CTS) { + dc->port[port].tty_icount.cts++; + } + if(old_ctrl.DSR != ctrl_dl.DSR) { + dc->port[port].tty_icount.dsr++; + } + if(old_ctrl.RI != ctrl_dl.RI) { + dc->port[port].tty_icount.rng++; + } + if(old_ctrl.DCD != ctrl_dl.DCD) { + dc->port[port].tty_icount.dcd++; + } + D1("port: %d DCD(%d), CTS(%d), RI(%d), DSR(%d)", + port, + dc->port[port].tty_icount.dcd, dc->port[port].tty_icount.cts, + dc->port[port].tty_icount.rng, dc->port[port].tty_icount.dsr); + + return 1; +} + +/* TODO: */ +/* - return ctrl_port_t */ +static u8 port2ctrl(port_type_t port) { + switch( port ) { + case PORT_MDM: + return CTRL_MDM; + case PORT_DIAG: + return CTRL_DIAG; + case PORT_APP1: + return CTRL_APP1; + case PORT_APP2: + return CTRL_APP2; + default: + ERR("ERROR: send flow control received for non-existing port"); + return -1; + }; + return -1; +} + +/* Send flow control, can only update one channel at a time */ +/* Return 0 - If we have updated all flow control */ +/* Return 1 - If we need to update more flow control, ack current enable more */ +static int send_flow_control( dc_t *dc ) { + u32 i, more_flow_control_to_be_updated = 0; + u16* ctrl; + + for( i=PORT_MDM; iport[i].update_flow_control ) { + if ( more_flow_control_to_be_updated ) { + /* We have more flow control to be updated */ + return 1; + } + dc->port[i].ctrl_ul.port = port2ctrl(i); + ctrl = (u16*) &dc->port[i].ctrl_ul; + /* D1( "sending flow control 0x%04X for port %d, %d", (u16) *ctrl, i, dc->port[i].ctrl_ul.port ); */ + SET_MEM( dc->port[PORT_CTRL].ul_addr[0], (u32*) ctrl, 2 ); + dc->port[i].update_flow_control = 0; + more_flow_control_to_be_updated = 1; + } + } + return 0; +} + +/* Handle donlink data, ports that are handled are modem and diagnostics */ +/* Return 1 - ok */ +/* Return 0 - toggle fields are out of sync */ +static int handle_data_dl(dc_t *dc, irq_t *m, port_type_t port, u8 *toggle, u16 mask1, u16 mask2) { + + if ( *toggle == 0 && m->read_iir & mask1 ) { + if (receive_data( port, dc )) { + SET_FCR( mask1 ); + *toggle = !(*toggle); + } + + if ( m->read_iir & mask2 ) { + if (receive_data( port, dc )) { + SET_FCR( mask2 ); + *toggle = !(*toggle); + } + } + } else if ( *toggle == 1 && m->read_iir & mask2 ) { + if (receive_data( port, dc )) { + SET_FCR( mask2 ); + *toggle = !(*toggle); + } + + if ( m->read_iir & mask1 ) { + if (receive_data( port, dc )) { + SET_FCR( mask1 ); + *toggle = !(*toggle); + } + } + } else { + ERR("port out of sync!, toggle:%d", *toggle); + return 0; + } + return 1; +} + +/* Handle uplink data, this is currently for the modem port */ +/* Return 1 - ok */ +/* Return 0 - toggle field are out of sync */ +static int handle_data_ul(dc_t *dc, irq_t *m, port_type_t port) { + + u8 *toggle = &(dc->port[port].toggle_ul); + + if ( *toggle==0 && m->read_iir & MDM_UL1 ) { + SET_IER( 0, MDM_UL ); + if (send_data(port, dc)) { + SET_FCR( MDM_UL1 ); + SET_IER( MDM_UL, MDM_UL); + *toggle = !*toggle; + } + + if ( m->read_iir & MDM_UL2 ) { + SET_IER( 0, MDM_UL ); + if (send_data(port, dc)) { + SET_FCR( MDM_UL2 ); + SET_IER( MDM_UL, MDM_UL); + *toggle = !*toggle; + } + } + + } else if ( *toggle==1 && m->read_iir & MDM_UL2 ) { + SET_IER( 0, MDM_UL ); + if (send_data(port, dc)) { + SET_FCR( MDM_UL2 ); + SET_IER( MDM_UL, MDM_UL); + *toggle = !*toggle; + } + + if ( m->read_iir & MDM_UL1 ) { + SET_IER( 0, MDM_UL ); + if (send_data(port, dc)) { + SET_FCR( MDM_UL1 ); + SET_IER( MDM_UL, MDM_UL); + *toggle = !*toggle; + } + } + } else { + SET_FCR( m->read_iir & MDM_UL ); + ERR("port out of sync!"); + return 0; + } + return 1; +} + +static irqreturn_t interrupt_handler(int irq, void *dev_id, struct pt_regs *regs) { + dc_t *dc = NULL; + irq_t* m = &my_irq; + + if (my_dev && my_dev->pdev != dev_id) { + return IRQ_NONE; + } + + if ( !(dc = get_dc_by_pdev(dev_id)) ) { + ERR("Could not find device context from pci_dev: %d", (u32) dev_id); + return IRQ_NONE; + } + + GET_IIR( m->read_iir ); + + /* Just handle interrupt enabled in IER (by masking with dc->ier_last_written) */ + m->read_iir &= dc->ier_last_written; + + if (m->read_iir == 0) { + return IRQ_NONE; + } + + if (dc == NULL ) { + ERR("ERROR!!"); + return IRQ_NONE; + } + + spin_lock(&dc->spin_mutex); + + D4( "%s irq:0x%04X, prev:0x%04X", interrupt2str(m->read_iir), m->read_iir, dc->ier_last_written); + + if ( m->read_iir & RESET) { + if( !nozomi_read_config_table(dc) ) { + SET_IER( 0, 0xFFFF); + ERR("ERR: Could not read status from card, we should disable interface"); + } else { + SET_FCR( RESET ); + } + goto exit_handler; /* No more useful info if this was the reset interrupt. */ + } + if ( m->read_iir & CTRL_UL ) { + D1( "CTRL_UL"); + SET_IER( 0, CTRL_UL ); + if ( send_flow_control(dc) ) { + SET_FCR( CTRL_UL ); + SET_IER( CTRL_UL, CTRL_UL ); + } + } + if ( m->read_iir & CTRL_DL ) { + receive_flow_control(dc, m); + SET_FCR( CTRL_DL ); + } + if ( m->read_iir & MDM_DL ) { + if ( !(handle_data_dl(dc, m, PORT_MDM, &(dc->port[PORT_MDM].toggle_dl), MDM_DL1, MDM_DL2)) ) { + ERR("MDM_DL out of sync!"); + goto exit_handler; + } + } + if ( m->read_iir & MDM_UL ) { + if ( !handle_data_ul(dc, m, PORT_MDM ) ) { + ERR("MDM_UL out of sync!"); + goto exit_handler; + } + } + if ( m->read_iir & DIAG_DL ) { + if ( !(handle_data_dl(dc, m, PORT_DIAG, &(dc->port[PORT_DIAG].toggle_dl), DIAG_DL1, DIAG_DL2)) ) { + ERR("DIAG_DL out of sync!"); + goto exit_handler; + } + } + if ( m->read_iir & DIAG_UL ) { + SET_IER( 0, DIAG_UL ); + if( send_data( PORT_DIAG, dc ) ) { + SET_FCR( DIAG_UL ); + SET_IER( DIAG_UL, DIAG_UL ); + } + } + if ( m->read_iir & APP1_DL ) { + if (receive_data( PORT_APP1, dc ) ) { + SET_FCR( APP1_DL ); + } + } + if ( m->read_iir & APP1_UL ) { + SET_IER( 0, APP1_UL ); + if(send_data( PORT_APP1, dc )) { + SET_FCR( APP1_UL ); + SET_IER( APP1_UL, APP1_UL ); + } + } + if ( m->read_iir & APP2_DL ) { + if (receive_data( PORT_APP2, dc )) { + SET_FCR( APP2_DL ); + } + } + if ( m->read_iir & APP2_UL ) { + SET_IER( 0, APP2_UL ); + if(send_data( PORT_APP2, dc )) { + SET_FCR( APP2_UL ); + SET_IER( APP2_UL, APP2_UL ); + } + } + + exit_handler: + spin_unlock(&dc->spin_mutex); + return IRQ_HANDLED; +} + +/* Request a shared IRQ from system */ +static int nozomi_setup_interrupt(struct pci_dev *pdev) { + + int rval = 0; + + if ( (rval = request_irq( pdev->irq, &interrupt_handler, SA_SHIRQ, NOZOMI_NAME, pdev )) ) { + ERR("Cannot open because IRQ %d is already in use.", pdev->irq ); + return rval; + } + + return rval; +} + +static void nozomi_get_card_type(dc_t *dc) { + u32 i, size=0; + for(i=0;i<6;i++) { + size += pci_resource_len(dc->pdev, i); + } + + /* Assume card type F32_8 if no match */ + dc->card_type = size == 2048 ? F32_2 : F32_8; + + INFO("Card type is: %d", dc->card_type ); +} + +void nozomi_setup_private_data(dc_t *dc) { + u32 offset = dc->base_addr + dc->card_type/2; + int i; + + dc->REG_FCR = offset + R_FCR; + dc->REG_IIR = offset + R_IIR; + dc->REG_IER = offset + R_IER; + dc->ier_last_written = 0; + dc->closing = 0; + + dc->port[PORT_MDM ].token_dl = MDM_DL; + dc->port[PORT_DIAG].token_dl = DIAG_DL; + dc->port[PORT_APP1].token_dl = APP1_DL; + dc->port[PORT_APP2].token_dl = APP2_DL; + + for(i=PORT_MDM;iport[i].rx_data = dc->port[i].tx_data = 0; + dc->port[i].tty_dont_flip = 0; + } +} + + +static void tty_flip_queue_function(void *tmp_dc) { + dc_t *dc = (dc_t*) tmp_dc; + int i; + + /* Enable interrupt for that port */ + for(i=0;iport[i].tty_dont_flip) { + D6("Enable for port: %d", i); + dc->port[i].tty_dont_flip = 0; + enable_transmit_dl(dc->port[i].tty_index, dc); + } + } +} + +static int read_proc_card_type(char *buf, char **start, off_t offset, int len) { + dc_t *dc = get_dc_by_index(0); + len = 0; + + len += sprintf(buf+len,"%d\n", dc->card_type); + return len; +} + +static int read_proc_open_ttys(char *buf, char **start, off_t offset, int len) { + dc_t *dc = get_dc_by_index(0); + len = 0; + + len += sprintf(buf+len,"%d\n", dc->open_ttys); + return len; +} + +static int read_proc_version(char *buf, char **start, off_t offset, int len) { + len = 0; + + len += sprintf(buf+len, "%s\n", VERSION_STRING); + return len; +} + +static int read_proc_rtx(char *buf, char **start, off_t offset, int len) { + dc_t *dc = get_dc_by_index(0); + int i; + + len = 0; + + + for(i=PORT_MDM;iport[i].rx_data, dc->port[i].tx_data); + } + return len; +} + +static void make_proc_dirs(void) { + dc_t *dc = get_dc_by_index(0); + + dc->proc_entry = proc_mkdir("nozomi", &proc_root); + + /* Register the read_proc */ + if ( !create_proc_info_entry("card_type",0,dc->proc_entry,read_proc_card_type) ) { + ERR("ERROR: failed to register read_procmem"); + } + if ( !create_proc_info_entry("open_ttys",0,dc->proc_entry,read_proc_open_ttys) ) { + ERR("ERROR: failed to register read_procmem"); + } + if ( !create_proc_info_entry("rtx",0,dc->proc_entry,read_proc_rtx) ) { + ERR("ERROR: failed to register read_procmem"); + } + if ( !create_proc_info_entry("version",0,dc->proc_entry,read_proc_version) ) { + ERR("ERROR: failed to register read_procmem"); + } +} + +static void remove_proc_dirs(void) { + dc_t *dc = get_dc_by_index(0); + + remove_proc_entry("card_type", dc->proc_entry); + remove_proc_entry("open_ttys", dc->proc_entry); + remove_proc_entry("rtx", dc->proc_entry); + remove_proc_entry("version", dc->proc_entry); + remove_proc_entry("nozomi", &proc_root); +} + +static void send_reset_token(dc_t *dc) { + + ctrl_ul_t ctrl; + + /* Send 0x0001, command card to resend the reset token. */ + /* This is to get the reset when the module is reloaded. */ + ctrl.port = 0x00; ctrl.reserved = 0; ctrl.RTS=0; ctrl.DTR=1; + D1( "sending flow control 0x%04X", * ((u16*) &ctrl) ); + + + /*SET_MEM( dc->port[PORT_CTRL].ul_addr[0], (u32*) &ctrl, 2 );*/ + /* hack alert :D (fixed address determined experimentally) */ + SET_MEM( dc->base_addr + 0x000002FC, (u32*) &ctrl, 2 ); + SET_FCR( CTRL_UL ); /* push the token to the card. */ + D1( "sent flow control 0x%04X", * ((u16*) &ctrl) ); +} + +/* Allocate memory for one device */ +static int __devinit nozomi_card_init(struct pci_dev *pdev, const struct pci_device_id *ent) { + int ret = -EIO; + dc_t *dc=NULL; + + cards_found++; + INFO("Init, cards_found: %d", cards_found); + + if (!(my_dev = kmalloc(sizeof(dc_t), GFP_KERNEL))) { + D1( "Could not allocate memory"); + return -EIO; + } + + memset(my_dev, 0, sizeof( dc_t )); + + if (cards_found > 1) { + ERR("This driver only supports 1 device"); + return -ENODEV; + } + + my_dev->pdev = pdev; + dc = my_dev; + + /* Find out what card type it is */ + nozomi_get_card_type(dc); + + if (pci_enable_device(dc->pdev)) { + ERR("Not possible to enable PCI Device"); + return -ENODEV; + } + + if ( (dc->base_addr = pci_resource_start(dc->pdev, 0)) == 0x0000) { + ERR("No I/O-Address for card detected"); + ret = -ENODEV; + goto err_disable_device; + } + + if (!(dc->base_addr = (u32) ioremap(dc->base_addr, dc->card_type))) { + ERR("No I/O-Address for card detected"); + ret = -ENODEV; + goto err_disable_device; + } + + dc->open_ttys=0; + + nozomi_setup_private_data(dc); + + if (pci_request_regions(dc->pdev, NOZOMI_NAME)) { + ERR("I/O address 0x%04x already in use", + (int) /* nozomi_private.io_addr */ 0); + ret = -EIO; + goto err_disable_regions; + } + + if ( !(dc->send_buf = kmalloc(SEND_BUF_MAX, GFP_KERNEL))) { + ERR("Could not allocate send buffer?"); + goto err_disable_regions; + } + + /* Disable all interrupts */ + SET_IER( 0 , 0xFFFF ); + + /* Setup interrupt handler */ + if (nozomi_setup_interrupt(dc->pdev)) { + ret = -EIO; + goto err_disable_regions; + } + + D1( "base_addr: 0x%08X", dc->base_addr); + +#ifdef KERNEL_2_4 + dc->tty_flip_queue.list.next = NULL; + dc->tty_flip_queue.list.prev = NULL; + dc->tty_flip_queue.sync = 0; + dc->tty_flip_queue.data = dc; + dc->tty_flip_queue.routine = tty_flip_queue_function; +#endif +#ifdef KERNEL_2_6 + if ( !(dc->tty_flip_wq = create_singlethread_workqueue(NOZOMI_NAME )) ) { + ERR("Could not create workqueue?"); + BUG_ON(!dc->tty_flip_wq); + return -ENOMEM; + } + INIT_WORK( &dc->tty_flip_wq_struct, tty_flip_queue_function, (void*) dc); +#endif + + spin_lock_init(&dc->spin_mutex); + + make_proc_dirs(); + + ntty_tty_init(dc); +#if 0 + if (!nozomi_read_config_table(dc)) { + ERR("Could not read config table (pass 1)"); + return -ENODEV; + } + if (!nozomi_read_config_table(dc)) { + ERR("Could not read config table (pass 2)"); + return -ENODEV; + } +#endif + send_reset_token(dc); + + /* Enable RESET interrupt. */ + SET_IER( RESET, 0xFFFF ); + + return 0; + +err_disable_regions: + pci_release_regions(pdev); + iounmap((void *)dc->base_addr ); + dc->base_addr = 0; + +err_disable_device: + pci_disable_device(pdev); + if(my_dev) { + kfree( my_dev ); + } + return ret; +} + +static void tty_do_close(dc_t *dc, port_t *port) { + + down(&port->tty_sem); + + if ( !port->tty_open_count ) { + goto exit; + } + + dc->open_ttys--; + port->tty_open_count--; +#ifdef KERNEL_2_4 + MOD_DEC_USE_COUNT; +#endif + + if ( port->tty_open_count == 0) { + D1("close: %d", port->token_dl ); + SET_IER( 0, port->token_dl ); + } + +exit: + up(&port->tty_sem); +} + +static void __exit tty_exit(void) { + int i; + dc_t *dc = my_dev; + + D1( " "); + +#ifdef KERNEL_2_6 + for (i = 0; i < NTTY_TTY_MINORS; ++i) + tty_unregister_device(&dc->tty_driver, i); +#endif + + tty_unregister_driver(&dc->tty_driver); + + for (i = 0; i < NTTY_TTY_MINORS; i++) { + while (dc->port[i].tty_open_count) { + tty_do_close(dc, &dc->port[i]); + } + + dc->port[i].tty = NULL; + } +} + +/* Deallocate memory for one device */ +static void __devexit nozomi_card_exit(struct pci_dev *pdev) { + int i; + dc_t *dc = get_dc_by_pdev(pdev); + + /* Disable all interrupts */ + SET_IER( 0, 0xFFFF); + + /* Setup dc->reg addresses to we can use defines here */ + nozomi_setup_private_data(dc); + send_reset_token(dc); + + D1( "pci_release_regions"); + pci_release_regions(pdev); + + if(dc->base_addr) + iounmap((void *)dc->base_addr); + + D1( "pci_disable_device"); + pci_disable_device(pdev); + + free_irq( pdev->irq, pdev ); + + for (i=PORT_MDM; i< MAX_PORT;i++) { + kfree ( dc->port[i].fifo_ul ); + } + + kfree( dc->send_buf ); + + tty_exit(); + + remove_proc_dirs(); + +#ifdef KERNEL_2_6 + destroy_workqueue(dc->tty_flip_wq); +#endif + + if (my_dev) { + kfree( my_dev ); + } + + cards_found--; + cards_initialized--; +} + +static void set_rts(int index, int rts) { + dc_t *dc = get_dc_by_index(index); + + dc->port[index].ctrl_ul.RTS = rts; + dc->port[index].update_flow_control = 1; + enable_transmit_ul(PORT_CTRL, dc); +} + +static void set_dtr(int index, int dtr) { + dc_t *dc = get_dc_by_index(index); + + D1("SETTING DTR index: %d, dtr: %d", index, dtr); + + dc->port[index].ctrl_ul.DTR = dtr; + dc->port[index].update_flow_control = 1; + enable_transmit_ul(PORT_CTRL, dc); +} + + +/* --------------------------------------------------------------------------------------------------- + TTY code + ---------------------------------------------------------------------------------------------------*/ + + +/* Called when the userspace process opens the tty, /dev/noz*. */ +static int ntty_open(struct tty_struct *tty, struct file *file) { + + s32 index = get_index(tty); + port_t *port = get_port_by_tty(tty); + dc_t *dc = get_dc_by_tty(tty); + + CARD_CHECK(-ENODEV); + + down(&port->tty_sem); + + tty->low_latency = 1; + tty->driver_data = port; + port->tty = tty; + port->tty_index = index; + + port->tty_open_count++; + dc->open_ttys++; + +#ifdef KERNEL_2_4 + MOD_INC_USE_COUNT; +#endif + + /* Enable interrupt downlink for channel */ + if ( port->tty_open_count == 1) { + port->rx_data = port->tx_data = 0; + D1("open: %d", port->token_dl ); + SET_IER( port->token_dl, port->token_dl ); + } + + up(&port->tty_sem); + + return 0; +} + +/* Called when the userspace process close the tty, /dev/noz*. */ +static void ntty_close(struct tty_struct *tty, struct file *file) { + dc_t *dc; + CARD_CHECK(); + dc = get_dc_by_tty(tty); + tty_do_close(dc, (port_t *) tty->driver_data); +} + +/* called when the userspace process writes to the tty (/dev/noz*). */ +/* Data is inserted into a fifo, which is then read and transfered to the modem. */ +#ifdef KERNEL_2_6 +static int ntty_write(struct tty_struct *tty, const unsigned char *buffer, int count) { +#else +static s32 ntty_write(struct tty_struct *tty, s32 from_user, const u8 *buffer, s32 count) { +#endif + int rval = -EINVAL; + dc_t *dc = get_dc_by_tty(tty); + port_t *port = (port_t *) tty->driver_data; + + CARD_CHECK(rval); + + /* D1( "WRITEx: %d, index = %d", count, index); */ + + if (! port) { + return -ENODEV; + } + + down(&port->tty_sem); + + if (! port->tty_open_count) { + D1( " "); + goto exit; + } + +#ifdef KERNEL_2_4 + if (from_user) { + rval = __kfifo_put_user(port->fifo_ul, (unsigned char *) buffer, count); + } else { + rval = __kfifo_put(port->fifo_ul, (unsigned char *) buffer, count); + } +#else + rval = __kfifo_put(port->fifo_ul, (unsigned char *) buffer, count); +#endif + + /* notify card */ + if ( dc == NULL) { + D1( "No device context?"); + goto exit; + } + + // CTS is only valid on the modem channel + if ( port == &(dc->port[PORT_MDM]) ) { + if ( port->ctrl_dl.CTS ) { + D4( "Enable interrupt"); + enable_transmit_ul(port->tty_index, dc ); + } else { + ERR("CTS not active on modem port?"); + } + } else { + enable_transmit_ul(port->tty_index, dc ); + } + +exit: + up(&port->tty_sem); + return rval; +} + +/* Calculate how much is left in device */ +/* This method is called by the upper tty layer. */ +/* #according to sources N_TTY.c it expects a value >= 0 and does not check for negative values. */ +static int ntty_write_room(struct tty_struct *tty) { + port_t *port = (port_t *) tty->driver_data; + int room = 0; +/* u32 flags = 0; */ +/* dc_t *dc = get_dc_by_tty(tty); */ + + CARD_CHECK(-ENODEV); + + if (! port) { + return 0; + } + + down(&port->tty_sem); + + if (! port->tty_open_count) { + goto exit; + } + + room = port->fifo_ul->size - __kfifo_len(port->fifo_ul); + +exit: + up(&port->tty_sem); + return room; +} + +/* Sets termios flags, called by the tty layer. */ +static void ntty_set_termios(struct tty_struct *tty, struct termios *old_termios) { + unsigned int cflag; + + CARD_CHECK(); + + cflag = tty->termios->c_cflag; + + if (old_termios) { + if ((cflag == old_termios->c_cflag) && + (RELEVANT_IFLAG(tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) { + D1( " - nothing to change..."); + goto exit_termios; + } + } + + /* get the byte size */ + switch (cflag & CSIZE) { + case CS5: + D1( " - data bits = 5"); + break; + case CS6: + D1( " - data bits = 6"); + break; + case CS7: + D1( " - data bits = 7"); + break; + default: + case CS8: + D1( " - data bits = 8"); + break; + } + + /* determine the parity */ + if (cflag & PARENB) { + if (cflag & PARODD) { + D1( " - parity = odd"); + } else { + D1( " - parity = even"); + } + } else { + D1( " - parity = none"); + } + + /* figure out the stop bits requested */ + if (cflag & CSTOPB) { + D1( " - stop bits = 2"); + } else { + D1( " - stop bits = 1"); + } + + /* figure out the hardware flow control settings */ + if (cflag & CRTSCTS) { + D1( " - RTS/CTS is enabled"); + } else { + D1( " - RTS/CTS is disabled"); + } + + /* determine software flow control */ + /* if we are implementing XON/XOFF, set the start and + * stop character in the device */ + if (I_IXOFF(tty) || I_IXON(tty)) { +#ifdef NOZOMI_DEBUG + unsigned char stop_char = STOP_CHAR(tty); + unsigned char start_char = START_CHAR(tty); +#endif + /* if we are implementing INBOUND XON/XOFF */ + if (I_IXOFF(tty)) { + D1( " - INBOUND XON/XOFF is enabled, " + "XON = %2x, XOFF = %2x", start_char, stop_char); + } else { + D1( " - INBOUND XON/XOFF is disabled"); + } + + /* if we are implementing OUTBOUND XON/XOFF */ + if (I_IXON(tty)) { + D1( " - OUTBOUND XON/XOFF is enabled, " + "XON = %2x, XOFF = %2x", start_char, stop_char); + } else { + D1( " - OUTBOUND XON/XOFF is disabled"); + } + } + + exit_termios: + return; +} + +/* Gets io control parameters */ +static int ntty_tiocmget(struct tty_struct *tty, struct file *file) { + port_t *port = (port_t *) tty->driver_data; + ctrl_dl_t *ctrl_dl = &port->ctrl_dl; + ctrl_ul_t *ctrl_ul = &port->ctrl_ul; + + return 0 + | (ctrl_ul->RTS ? TIOCM_RTS : 0) + | (ctrl_ul->DTR ? TIOCM_DTR : 0) + | (ctrl_dl->DCD ? TIOCM_CAR : 0) + | (ctrl_dl->RI ? TIOCM_RNG : 0) + | (ctrl_dl->DSR ? TIOCM_DSR : 0) + | (ctrl_dl->CTS ? TIOCM_CTS : 0); +} + +/* Sets io controls parameters */ +static int ntty_tiocmset(struct tty_struct *tty, struct file *file, u32 arg) { + port_t *port = (port_t *) tty->driver_data; + + set_rts(port->tty_index, (arg & TIOCM_RTS) ? 1 : 0); + set_dtr(port->tty_index, (arg & TIOCM_DTR) ? 1 : 0); + + return 0; +} + +static int ntty_ioctl_tiocmiwait(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) { + port_t *port = (port_t *) tty->driver_data; + + if (cmd == TIOCMIWAIT) { + DECLARE_WAITQUEUE(wait, current); + struct async_icount cnow; + struct async_icount cprev; + + cprev = port->tty_icount; + while (1) { + add_wait_queue(&port->tty_wait, &wait); + set_current_state(TASK_INTERRUPTIBLE); + schedule(); + remove_wait_queue(&port->tty_wait, &wait); + + /* see if a signal woke us up */ + if (signal_pending(current)) + return -ERESTARTSYS; + + cnow = port->tty_icount; + if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && + cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) + return -EIO; /* no change => error */ + 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)) ) { + return 0; + } + cprev = cnow; + } + + } + return -ENOIOCTLCMD; +} + +static int ntty_ioctl_tiocgicount(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) { + port_t *port = (port_t *) tty->driver_data; + + if (cmd == TIOCGICOUNT) { + struct async_icount cnow = port->tty_icount; + struct serial_icounter_struct icount; + + 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; + + if (copy_to_user((void *)arg, &icount, sizeof(icount))) + return -EFAULT; + return 0; + } + return -ENOIOCTLCMD; +} + +static int ntty_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) { + port_t *port = (port_t *) tty->driver_data; + int mask; + int rval = -ENOIOCTLCMD; + + CARD_CHECK(rval); + + D1("******** IOCTL, cmd: %d", cmd); + + + switch (cmd) { + case TCGETS: + D1( "IOCTL TCGETS ..."); + rval = -ENOIOCTLCMD; + break; + case TCSETS: + D1( "IOCTL TCSETS ..."); + rval = -ENOIOCTLCMD; + break; + case TIOCMIWAIT: + rval = ntty_ioctl_tiocmiwait(tty, file, cmd, arg); + break; + case TIOCGICOUNT: + rval = ntty_ioctl_tiocgicount(tty, file, cmd, arg); + break; + case TIOCMGET: + rval = ntty_tiocmget(tty, file); + break; + case TIOCMSET: + rval = ntty_tiocmset(tty, file, arg); + break; + case TIOCMBIC: + if (get_user(mask, (unsigned long *) arg)) + return -EFAULT; + + if (mask & TIOCM_RTS) + set_rts(port->tty_index, 0); + if (mask & TIOCM_DTR) + set_dtr(port->tty_index, 0); + rval = 0; + break; + case TIOCMBIS: + if (get_user(mask, (unsigned long *) arg)) + return -EFAULT; + + if (mask & TIOCM_RTS) + set_rts(port->tty_index, 1); + if (mask & TIOCM_DTR) + set_dtr(port->tty_index, 1); + rval = 0; + break; + case TCFLSH: + D1( "IOCTL TCFLSH ..."); + rval = -ENOIOCTLCMD; + break; + + default: + D1( "ERR: 0x%08X, %d", cmd, cmd); + break; + }; + + return rval; +} + +/* Called by the upper tty layer when tty buffers are ready */ +/* to receive data again after a call to throttle. */ +static void ntty_unthrottle(struct tty_struct *tty) { + port_t *port = (port_t *) tty->driver_data; + dc_t *dc = get_dc_by_tty(tty); + u32 flags; + + CARD_CHECK(); + + D1( "UNTHROTTLE"); + spin_lock_irqsave(&dc->spin_mutex, flags); + enable_transmit_dl(port->tty_index, dc); + set_rts(port->tty_index, 1); + + spin_unlock_irqrestore(&dc->spin_mutex, flags); +} + +/* Called by the upper tty layer when the tty buffers are almost full. */ +/* The driver should stop send more data. */ +static void ntty_throttle(struct tty_struct *tty) { + port_t *port = (port_t *) tty->driver_data; + dc_t *dc = get_dc_by_tty(tty); + u32 flags; + + CARD_CHECK(); + + D1( "THROTTLE"); + spin_lock_irqsave(&dc->spin_mutex, flags); + set_rts(port->tty_index, 0); + spin_unlock_irqrestore(&dc->spin_mutex, flags); +} + +static void ntty_put_char(struct tty_struct *tty, unsigned char c) { + CARD_CHECK(); + D2("PUT CHAR Function: %c", c); +} + +/* Returns number of chars in buffer, called by tty layer */ +static s32 ntty_chars_in_buffer(struct tty_struct *tty) { + port_t *port = (port_t *) tty->driver_data; + s32 rval; + + CARD_CHECK(-ENODEV); + + if (! port) { + rval = -ENODEV; + goto exit_in_buffer; + } + + if (! port->tty_open_count) { + ERR("No tty open?"); + rval = -ENODEV; + goto exit_in_buffer; + } + + rval = __kfifo_len(port->fifo_ul); + + exit_in_buffer: + return rval; +} + +/* Initializes the tty */ +static int ntty_tty_init(dc_t *dc) { + struct tty_driver *td = &dc->tty_driver; + int rval; + int i; + + memset(td, 0, sizeof(struct tty_driver)); + + td->magic = TTY_DRIVER_MAGIC; + td->driver_name = NOZOMI_NAME_TTY; + td->name = "noz"; + td->major = NTTY_TTY_MAJOR, + td->type = TTY_DRIVER_TYPE_SERIAL, + td->subtype = SERIAL_TYPE_NORMAL, + td->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS, + td->init_termios = tty_std_termios; + td->init_termios.c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL; + + td->num = MAX_PORT; + td->name_base = 0; + td->minor_start = 0; + +#ifdef KERNEL_2_4 + td->table = dc->tty_table; + td->refcount = &dc->tty_refcount; +#endif + + td->termios = dc->tty_termios; + td->termios_locked = dc->tty_termios_locked; + + td->ioctl = ntty_ioctl; + td->open = ntty_open; + td->close = ntty_close; + td->write = ntty_write; + td->write_room = ntty_write_room; + td->unthrottle = ntty_unthrottle; + td->throttle = ntty_throttle; + td->set_termios = ntty_set_termios; + td->chars_in_buffer = ntty_chars_in_buffer; + td->put_char = ntty_put_char; + + rval = tty_register_driver(td); + + if (rval) { + printk(KERN_ERR "failed to register ntty tty driver"); + D1( "failed to register ntty tty driver"); + return rval; + } + + for (i = 0; i < NTTY_TTY_MINORS; i++) { + init_MUTEX(&dc->port[i].tty_sem); + dc->port[i].tty_open_count = 0; + dc->port[i].tty = NULL; + +#ifdef KERNEL_2_6 + tty_register_device(td, i, NULL); +#endif + } + + printk(KERN_INFO DRIVER_DESC " " NOZOMI_NAME_TTY); + D1( " "); + return rval; +} + +/* Module initialization */ +static struct pci_driver nozomi_driver = { + .name = NOZOMI_NAME, + .id_table = nozomi_pci_tbl, + .probe = nozomi_card_init, + .remove = __devexit_p(nozomi_card_exit), +}; + +static int __init nozomi_init(void) { + int rval = 0; + + rval = pci_module_init(&nozomi_driver); + printk(KERN_INFO "Initializing %s\n", VERSION_STRING); + return rval; +} + +static void nozomi_exit(void) { + printk(KERN_INFO "Unloading %s", DRIVER_DESC); + + pci_unregister_driver(&nozomi_driver); +} + +module_init(nozomi_init); +module_exit(nozomi_exit); + +#ifdef NOZOMI_DEBUG + MODULE_PARM(nzdebug, "i"); +#endif + +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_DESCRIPTION( DRIVER_DESC );