X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=drivers%2Fchar%2Fpcmcia%2Fsynclink_cs.c;h=4e84d233e5a295b8cb5c0e43b051e6133197efbe;hb=98a1e95f9b5919b55c71a01546415074282d30d5;hp=13808f6083a08ab346c84c509798082b3e408e02;hpb=5f757f91e70a97eda8f0cc13bddc853209b2d173;p=~andy%2Flinux diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c index 13808f6083a..4e84d233e5a 100644 --- a/drivers/char/pcmcia/synclink_cs.c +++ b/drivers/char/pcmcia/synclink_cs.c @@ -57,6 +57,7 @@ #include #include #include +#include #include #include @@ -87,8 +88,6 @@ #include -#include "linux/synclink.h" - static MGSL_PARAMS default_params = { MGSL_MODE_HDLC, /* unsigned long mode */ 0, /* unsigned char loopback; */ @@ -123,7 +122,7 @@ typedef struct #define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK)) struct _input_signal_events { - int ri_up; + int ri_up; int ri_down; int dsr_up; int dsr_down; @@ -137,7 +136,7 @@ struct _input_signal_events { /* * Device instance data structure */ - + typedef struct _mgslpc_info { void *if_ptr; /* General purpose pointer (used by SPPP) */ int magic; @@ -146,15 +145,15 @@ typedef struct _mgslpc_info { int line; unsigned short close_delay; unsigned short closing_wait; /* time to wait before closing */ - + struct mgsl_icount icount; - + struct tty_struct *tty; int timeout; int x_char; /* xon/xoff character */ int blocked_open; /* # of blocked opens */ unsigned char read_status_mask; - unsigned char ignore_status_mask; + unsigned char ignore_status_mask; unsigned char *tx_buf; int tx_put; @@ -170,10 +169,10 @@ typedef struct _mgslpc_info { 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 open_wait; wait_queue_head_t close_wait; - + wait_queue_head_t status_event_wait_q; wait_queue_head_t event_wait_q; struct timer_list tx_timer; /* HDLC transmit timeout timer */ @@ -192,7 +191,7 @@ typedef struct _mgslpc_info { int bh_running; int bh_requested; - + int dcd_chkcount; /* check counts to prevent */ int cts_chkcount; /* too many IRQs if a signal */ int dsr_chkcount; /* is floating */ @@ -212,7 +211,7 @@ typedef struct _mgslpc_info { 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 */ @@ -249,7 +248,7 @@ typedef struct _mgslpc_info { */ #define TXBUFSIZE 4096 - + #define CHA 0x00 /* channel A offset */ #define CHB 0x40 /* channel B offset */ @@ -298,9 +297,9 @@ typedef struct _mgslpc_info { #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 @@ -315,13 +314,13 @@ typedef struct _mgslpc_info { #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 @@ -329,25 +328,25 @@ typedef struct _mgslpc_info { #define PVR_RS232 0x20 /* 0010b */ #define PVR_V35 0xe0 /* 1110b */ #define PVR_RS422 0x40 /* 0100b */ - -/* Register access functions */ - + +/* 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 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))) + (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))) + (unsigned char) (read_reg(info, (reg)) & ~(mask))) /* * interrupt enable/disable routines - */ -static void irq_disable(MGSLPC_INFO *info, unsigned char channel, unsigned short mask) + */ +static void irq_disable(MGSLPC_INFO *info, unsigned char channel, unsigned short mask) { if (channel == CHA) { info->imra_value |= mask; @@ -357,7 +356,7 @@ static void irq_disable(MGSLPC_INFO *info, unsigned char channel, unsigned short write_reg16(info, CHB + IMR, info->imrb_value); } } -static void irq_enable(MGSLPC_INFO *info, unsigned char channel, unsigned short mask) +static void irq_enable(MGSLPC_INFO *info, unsigned char channel, unsigned short mask) { if (channel == CHA) { info->imra_value &= ~mask; @@ -540,13 +539,12 @@ static int mgslpc_probe(struct pcmcia_device *link) if (debug_level >= DEBUG_LEVEL_INFO) printk("mgslpc_attach\n"); - info = kmalloc(sizeof(MGSLPC_INFO), GFP_KERNEL); + info = kzalloc(sizeof(MGSLPC_INFO), GFP_KERNEL); if (!info) { printk("Error can't allocate device instance data\n"); return -ENOMEM; } - memset(info, 0, sizeof(MGSLPC_INFO)); info->magic = MGSLPC_MAGIC; INIT_WORK(&info->task, bh_handler); info->max_frame_size = 4096; @@ -559,7 +557,7 @@ static int mgslpc_probe(struct pcmcia_device *link) 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->idle_mode = HDLC_TXIDLE_FLAGS; info->imra_value = 0xffff; info->imrb_value = 0xffff; info->pim_value = 0xff; @@ -601,7 +599,7 @@ static int mgslpc_config(struct pcmcia_device *link) u_char buf[64]; cistpl_cftable_entry_t dflt = { 0 }; cistpl_cftable_entry_t *cfg; - + if (debug_level >= DEBUG_LEVEL_INFO) printk("mgslpc_config(0x%p)\n", link); @@ -625,7 +623,7 @@ static int mgslpc_config(struct pcmcia_device *link) link->conf.ConfigIndex = cfg->index; link->conf.Attributes |= CONF_ENABLE_IRQ; - + /* IO window settings */ link->io.NumPorts1 = 0; if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) { @@ -645,7 +643,7 @@ static int mgslpc_config(struct pcmcia_device *link) link->conf.IntType = INT_MEMORY_AND_IO; link->conf.ConfigIndex = 8; link->conf.Present = PRESENT_OPTION; - + link->irq.Attributes |= IRQ_HANDLE_PRESENT; link->irq.Handler = mgslpc_isr; link->irq.Instance = info; @@ -754,10 +752,10 @@ static inline int mgslpc_paranoia_check(MGSLPC_INFO *info, #define CMD_TXEOM BIT1 // transmit end message #define CMD_TXRESET BIT0 // transmit reset -static BOOLEAN wait_command_complete(MGSLPC_INFO *info, unsigned char channel) +static BOOLEAN wait_command_complete(MGSLPC_INFO *info, unsigned char channel) { int i = 0; - /* wait for command completion */ + /* wait for command completion */ while (read_reg(info, (unsigned char)(channel+STAR)) & BIT2) { udelay(1); if (i++ == 1000) @@ -766,7 +764,7 @@ static BOOLEAN wait_command_complete(MGSLPC_INFO *info, unsigned char channel) return TRUE; } -static void issue_command(MGSLPC_INFO *info, unsigned char channel, unsigned char cmd) +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); @@ -776,12 +774,12 @@ 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); - + printk("tx_pause(%s)\n",info->device_name); + spin_lock_irqsave(&info->lock,flags); if (info->tx_enabled) tx_stop(info); @@ -792,12 +790,12 @@ 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); - + printk("tx_release(%s)\n",info->device_name); + spin_lock_irqsave(&info->lock,flags); if (!info->tx_enabled) tx_start(info); @@ -811,7 +809,7 @@ 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) { @@ -830,9 +828,9 @@ static int bh_action(MGSLPC_INFO *info) info->bh_running = 0; info->bh_requested = 0; } - + spin_unlock_irqrestore(&info->lock,flags); - + return rc; } @@ -843,22 +841,22 @@ static void bh_handler(struct work_struct *work) if (!info) return; - + if (debug_level >= DEBUG_LEVEL_BH) printk( "%s(%d):bh_handler(%s) entry\n", __FILE__,__LINE__,info->device_name); - + info->bh_running = 1; 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)); break; @@ -898,7 +896,7 @@ static void bh_status(MGSLPC_INFO *info) info->cts_chkcount = 0; } -/* eom: non-zero = end of frame */ +/* eom: non-zero = end of frame */ static void rx_ready_hdlc(MGSLPC_INFO *info, int eom) { unsigned char data[2]; @@ -907,7 +905,7 @@ static void rx_ready_hdlc(MGSLPC_INFO *info, int eom) if (debug_level >= DEBUG_LEVEL_ISR) printk("%s(%d):rx_ready_hdlc(eom=%d)\n",__FILE__,__LINE__,eom); - + if (!info->rx_enabled) return; @@ -921,12 +919,12 @@ static void rx_ready_hdlc(MGSLPC_INFO *info, int eom) } if (eom) { - /* end of frame, get FIFO count from RBCL register */ + /* end of frame, get FIFO count from RBCL register */ if (!(fifo_count = (unsigned char)(read_reg(info, CHA+RBCL) & 0x1f))) fifo_count = 32; } else fifo_count = 32; - + do { if (fifo_count == 1) { read_count = 1; @@ -970,7 +968,7 @@ static void rx_ready_async(MGSLPC_INFO *info, int tcd) struct mgsl_icount *icount = &info->icount; if (tcd) { - /* early termination, get FIFO count from RBCL register */ + /* 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. @@ -982,7 +980,7 @@ static void rx_ready_async(MGSLPC_INFO *info, int tcd) fifo_count = 32; tty_buffer_request_room(tty, fifo_count); - /* Flush received async data to receive data buffer. */ + /* Flush received async data to receive data buffer. */ while (fifo_count) { data = read_reg(info, CHA + RXFIFO); status = read_reg(info, CHA + RXFIFO); @@ -996,7 +994,7 @@ static void rx_ready_async(MGSLPC_INFO *info, int tcd) // BIT6:framing error if (status & (BIT7 + BIT6)) { - if (status & BIT7) + if (status & BIT7) icount->parity++; else icount->frame++; @@ -1004,7 +1002,7 @@ static void rx_ready_async(MGSLPC_INFO *info, int tcd) /* discard char if tty control flags say so */ if (status & info->ignore_status_mask) continue; - + status &= info->read_status_mask; if (status & BIT7) @@ -1023,7 +1021,7 @@ static void rx_ready_async(MGSLPC_INFO *info, int tcd) __FILE__,__LINE__,icount->rx,icount->brk, icount->parity,icount->frame,icount->overrun); } - + if (work) tty_flip_buffer_push(tty); } @@ -1033,7 +1031,7 @@ static void tx_done(MGSLPC_INFO *info) { if (!info->tx_active) return; - + info->tx_active = 0; info->tx_aborting = 0; @@ -1041,8 +1039,8 @@ static void tx_done(MGSLPC_INFO *info) return; info->tx_count = info->tx_put = info->tx_get = 0; - del_timer(&info->tx_timer); - + del_timer(&info->tx_timer); + if (info->drop_rts_on_tx_done) { get_signals(info); if (info->serial_signals & SerialSignal_RTS) { @@ -1055,7 +1053,7 @@ static void tx_done(MGSLPC_INFO *info) #if SYNCLINK_GENERIC_HDLC if (info->netcount) hdlcdev_tx_done(info); - else + else #endif { if (info->tty->stopped || info->tty->hw_stopped) { @@ -1091,7 +1089,7 @@ static void tx_ready(MGSLPC_INFO *info) 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 { @@ -1221,31 +1219,29 @@ static void ri_change(MGSLPC_INFO *info) } /* 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 irq, void *dev_id) +static irqreturn_t mgslpc_isr(int dummy, void *dev_id) { - MGSLPC_INFO * info = (MGSLPC_INFO *)dev_id; + MGSLPC_INFO *info = dev_id; unsigned short isr; unsigned char gis, pis; int count=0; - if (debug_level >= DEBUG_LEVEL_ISR) - printk("mgslpc_isr(%d) entry.\n", irq); - if (!info) - return IRQ_NONE; - + if (debug_level >= DEBUG_LEVEL_ISR) + printk("mgslpc_isr(%d) entry.\n", info->irq_level); + if (!(info->p_dev->_locked)) return IRQ_HANDLED; spin_lock(&info->lock); while ((gis = read_reg(info, CHA + GIS))) { - if (debug_level >= DEBUG_LEVEL_ISR) + if (debug_level >= DEBUG_LEVEL_ISR) printk("mgslpc_isr %s gis=%04X\n", info->device_name,gis); if ((gis & 0x70) || count > 1000) { @@ -1269,7 +1265,7 @@ static irqreturn_t mgslpc_isr(int irq, void *dev_id) irq_disable(info, CHA, IRQ_TIMER); } - /* receive IRQs */ + /* receive IRQs */ if (isr & IRQ_EXITHUNT) { info->icount.exithunt++; wake_up_interruptible(&info->event_wait_q); @@ -1284,12 +1280,12 @@ static irqreturn_t mgslpc_isr(int irq, void *dev_id) } if (isr & (IRQ_RXEOM + IRQ_RXFIFO)) { if (info->params.mode == MGSL_MODE_HDLC) - rx_ready_hdlc(info, isr & IRQ_RXEOM); + rx_ready_hdlc(info, isr & IRQ_RXEOM); else rx_ready_async(info, isr & IRQ_RXEOM); } - /* transmit IRQs */ + /* transmit IRQs */ if (isr & IRQ_UNDERRUN) { if (info->tx_aborting) info->icount.txabort++; @@ -1312,13 +1308,13 @@ static irqreturn_t mgslpc_isr(int irq, void *dev_id) ri_change(info); } } - - /* Request bottom half processing if there's something + + /* 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 ) + if ( debug_level >= DEBUG_LEVEL_ISR ) printk("%s(%d):%s queueing bh task.\n", __FILE__,__LINE__,info->device_name); schedule_work(&info->task); @@ -1326,10 +1322,10 @@ static irqreturn_t mgslpc_isr(int irq, void *dev_id) } spin_unlock(&info->lock); - - if (debug_level >= DEBUG_LEVEL_ISR) + + if (debug_level >= DEBUG_LEVEL_ISR) printk("%s(%d):mgslpc_isr(%d)exit.\n", - __FILE__,__LINE__,irq); + __FILE__, __LINE__, info->irq_level); return IRQ_HANDLED; } @@ -1339,13 +1335,13 @@ static irqreturn_t mgslpc_isr(int irq, void *dev_id) static int startup(MGSLPC_INFO * info) { int retval = 0; - + if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):startup(%s)\n",__FILE__,__LINE__,info->device_name); - + if (info->flags & ASYNC_INITIALIZED) 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); @@ -1357,18 +1353,18 @@ static int startup(MGSLPC_INFO * info) } info->pending_bh = 0; - + memset(&info->icount, 0, sizeof(info->icount)); setup_timer(&info->tx_timer, tx_timeout, (unsigned long)info); /* Allocate and claim adapter resources */ retval = claim_resources(info); - + /* perform existance check and diagnostics */ if ( !retval ) retval = adapter_test(info); - + if ( retval ) { if (capable(CAP_SYS_ADMIN) && info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags); @@ -1378,12 +1374,12 @@ static int startup(MGSLPC_INFO * info) /* program hardware for current parameters */ mgslpc_change_params(info); - + if (info->tty) clear_bit(TTY_IO_ERROR, &info->tty->flags); info->flags |= ASYNC_INITIALIZED; - + return 0; } @@ -1392,7 +1388,7 @@ static int startup(MGSLPC_INFO * info) static void shutdown(MGSLPC_INFO * info) { unsigned long flags; - + if (!(info->flags & ASYNC_INITIALIZED)) return; @@ -1419,16 +1415,16 @@ static void shutdown(MGSLPC_INFO * info) /* TODO:disable interrupts instead of reset to preserve signal states */ reset_device(info); - + if (!info->tty || info->tty->termios->c_cflag & HUPCL) { info->serial_signals &= ~(SerialSignal_DTR + SerialSignal_RTS); set_signals(info); } - + spin_unlock_irqrestore(&info->lock,flags); - release_resources(info); - + release_resources(info); + if (info->tty) set_bit(TTY_IO_ERROR, &info->tty->flags); @@ -1440,18 +1436,18 @@ static void mgslpc_program_hw(MGSLPC_INFO *info) 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; @@ -1460,10 +1456,10 @@ static void mgslpc_program_hw(MGSLPC_INFO *info) irq_enable(info, CHB, IRQ_DCD | IRQ_CTS); port_irq_enable(info, (unsigned char) PVR_DSR | PVR_RI); get_signals(info); - + if (info->netcount || info->tty->termios->c_cflag & CREAD) rx_start(info); - + spin_unlock_irqrestore(&info->lock,flags); } @@ -1476,11 +1472,11 @@ static void mgslpc_change_params(MGSLPC_INFO *info) if (!info->tty || !info->tty->termios) return; - + if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):mgslpc_change_params(%s)\n", __FILE__,__LINE__, info->device_name ); - + cflag = info->tty->termios->c_cflag; /* if B0 rate (hangup) specified then negate DTR and RTS */ @@ -1489,9 +1485,9 @@ static void mgslpc_change_params(MGSLPC_INFO *info) 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; @@ -1499,7 +1495,7 @@ static void mgslpc_change_params(MGSLPC_INFO *info) case CS8: info->params.data_bits = 8; break; default: info->params.data_bits = 7; break; } - + if (cflag & CSTOPB) info->params.stop_bits = 2; else @@ -1520,7 +1516,7 @@ static void mgslpc_change_params(MGSLPC_INFO *info) /* calculate number of jiffies to transmit a full * FIFO (32 bytes) at specified data rate */ - bits_per_char = info->params.data_bits + + bits_per_char = info->params.data_bits + info->params.stop_bits + 1; /* if port data rate is set to 460800 or less then @@ -1530,9 +1526,9 @@ static void mgslpc_change_params(MGSLPC_INFO *info) if (info->params.data_rate <= 460800) { info->params.data_rate = tty_get_baud_rate(info->tty); } - + if ( info->params.data_rate ) { - info->timeout = (32*HZ*bits_per_char) / + info->timeout = (32*HZ*bits_per_char) / info->params.data_rate; } info->timeout += HZ/50; /* Add .02 seconds of slop */ @@ -1541,14 +1537,14 @@ static void mgslpc_change_params(MGSLPC_INFO *info) info->flags |= ASYNC_CTS_FLOW; else info->flags &= ~ASYNC_CTS_FLOW; - + if (cflag & CLOCAL) info->flags &= ~ASYNC_CHECK_CD; else info->flags |= ASYNC_CHECK_CD; /* process tty input control flags */ - + info->read_status_mask = 0; if (I_INPCK(info->tty)) info->read_status_mask |= BIT7 | BIT6; @@ -1577,7 +1573,7 @@ static void mgslpc_put_char(struct tty_struct *tty, unsigned char ch) return; 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; @@ -1585,7 +1581,7 @@ static void mgslpc_put_char(struct tty_struct *tty, unsigned char ch) info->tx_count++; } } - + spin_unlock_irqrestore(&info->lock,flags); } @@ -1596,11 +1592,11 @@ 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; @@ -1619,13 +1615,13 @@ static void mgslpc_flush_chars(struct tty_struct *tty) } /* 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, @@ -1634,11 +1630,11 @@ static int mgslpc_write(struct tty_struct * tty, 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; @@ -1660,7 +1656,7 @@ static int mgslpc_write(struct tty_struct * tty, TXBUFSIZE - info->tx_put)); if (c <= 0) break; - + memcpy(info->tx_buf + info->tx_put, buf, c); spin_lock_irqsave(&info->lock,flags); @@ -1679,7 +1675,7 @@ start: tx_start(info); spin_unlock_irqrestore(&info->lock,flags); } -cleanup: +cleanup: if (debug_level >= DEBUG_LEVEL_INFO) printk( "%s(%d):mgslpc_write(%s) returning=%d\n", __FILE__,__LINE__,info->device_name,ret); @@ -1692,7 +1688,7 @@ 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; @@ -1707,7 +1703,7 @@ static int mgslpc_write_room(struct tty_struct *tty) 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); @@ -1720,14 +1716,14 @@ 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 @@ -1736,7 +1732,7 @@ static int mgslpc_chars_in_buffer(struct tty_struct *tty) if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):mgslpc_chars_in_buffer(%s)=%d\n", __FILE__,__LINE__, info->device_name, rc); - + return rc; } @@ -1746,17 +1742,17 @@ 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); + + spin_lock_irqsave(&info->lock,flags); info->tx_count = info->tx_put = info->tx_get = 0; - del_timer(&info->tx_timer); + del_timer(&info->tx_timer); spin_unlock_irqrestore(&info->lock,flags); wake_up_interruptible(&tty->write_wait); @@ -1773,7 +1769,7 @@ static void mgslpc_send_xchar(struct tty_struct *tty, char ch) 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; @@ -1792,17 +1788,17 @@ 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 (tty->termios->c_cflag & CRTSCTS) { spin_lock_irqsave(&info->lock,flags); info->serial_signals &= ~SerialSignal_RTS; @@ -1817,21 +1813,21 @@ 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 (tty->termios->c_cflag & CRTSCTS) { spin_lock_irqsave(&info->lock,flags); info->serial_signals |= SerialSignal_RTS; @@ -1871,9 +1867,9 @@ static int get_params(MGSLPC_INFO * info, MGSL_PARAMS __user *user_params) } /* set the serial parameters - * + * * Arguments: - * + * * info pointer to device instance data * new_params user buffer containing new serial params * @@ -1884,7 +1880,7 @@ static int set_params(MGSLPC_INFO * info, MGSL_PARAMS __user *new_params) 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 ); @@ -1895,13 +1891,13 @@ static int set_params(MGSLPC_INFO * info, MGSL_PARAMS __user *new_params) __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); - + return 0; } @@ -1964,10 +1960,10 @@ static int set_interface(MGSLPC_INFO * info, int if_mode) static int set_txenable(MGSLPC_INFO * info, int enable) { 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) @@ -1983,10 +1979,10 @@ static int set_txenable(MGSLPC_INFO * info, int enable) 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) { @@ -2003,10 +1999,10 @@ static int tx_abort(MGSLPC_INFO * info) 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) @@ -2020,7 +2016,7 @@ static int set_rxenable(MGSLPC_INFO * info, int enable) } /* 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 @@ -2041,7 +2037,7 @@ static int wait_events(MGSLPC_INFO * info, int __user *mask_ptr) 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); @@ -2063,24 +2059,24 @@ static int wait_events(MGSLPC_INFO * info, int __user *mask_ptr) /* 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; @@ -2116,11 +2112,11 @@ static int wait_events(MGSLPC_INFO * info, int __user *mask_ptr) (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); @@ -2248,42 +2244,42 @@ static void 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; spin_lock_irqsave(&info->lock,flags); if (break_state == -1) set_reg_bits(info, CHA+DAFO, BIT6); - else + else clear_reg_bits(info, CHA+DAFO, BIT6); spin_unlock_irqrestore(&info->lock,flags); } /* Service an IOCTL request - * + * * Arguments: - * + * * tty pointer to tty instance data * file pointer to associated file object for device * cmd IOCTL command code * arg command argument/context - * + * * Return Value: 0 if success, otherwise error code */ static int mgslpc_ioctl(struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg) { MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; - + 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; @@ -2303,7 +2299,7 @@ static int ioctl_common(MGSLPC_INFO *info, unsigned int cmd, unsigned long arg) struct serial_icounter_struct __user *p_cuser; /* user space */ void __user *argp = (void __user *)arg; unsigned long flags; - + switch (cmd) { case MGSL_IOCGPARAMS: return get_params(info, argp); @@ -2364,9 +2360,9 @@ static int ioctl_common(MGSLPC_INFO *info, unsigned int cmd, unsigned long arg) } /* Set new termios settings - * + * * Arguments: - * + * * tty pointer to tty structure * termios pointer to buffer to hold returned old termios */ @@ -2374,14 +2370,14 @@ static void mgslpc_set_termios(struct tty_struct *tty, struct ktermios *old_term { 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(tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) return; @@ -2395,12 +2391,12 @@ static void mgslpc_set_termios(struct tty_struct *tty, struct ktermios *old_term set_signals(info); spin_unlock_irqrestore(&info->lock,flags); } - + /* Handle transition away from B0 status */ if (!(old_termios->c_cflag & CBAUD) && tty->termios->c_cflag & CBAUD) { info->serial_signals |= SerialSignal_DTR; - if (!(tty->termios->c_cflag & CRTSCTS) || + if (!(tty->termios->c_cflag & CRTSCTS) || !test_bit(TTY_THROTTLED, &tty->flags)) { info->serial_signals |= SerialSignal_RTS; } @@ -2408,7 +2404,7 @@ static void mgslpc_set_termios(struct tty_struct *tty, struct ktermios *old_term set_signals(info); spin_unlock_irqrestore(&info->lock,flags); } - + /* Handle turning off CRTSCTS */ if (old_termios->c_cflag & CRTSCTS && !(tty->termios->c_cflag & CRTSCTS)) { @@ -2423,17 +2419,17 @@ static void mgslpc_close(struct tty_struct *tty, struct file * filp) 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, info->count); - + if (!info->count) return; if (tty_hung_up_p(filp)) goto cleanup; - + if ((tty->count == 1) && (info->count != 1)) { /* * tty->count is 1 and the tty structure will be freed. @@ -2444,30 +2440,30 @@ static void mgslpc_close(struct tty_struct *tty, struct file * filp) "info->count is %d\n", info->count); info->count = 1; } - + info->count--; - + /* if at least one open remaining, leave hardware active */ if (info->count) goto cleanup; - + info->flags |= ASYNC_CLOSING; - - /* set tty->closing to notify line discipline to + + /* set tty->closing to notify line discipline to * only process XON/XOFF characters. Only the N_TTY * discipline appears to use this (ppp does not). */ tty->closing = 1; - + /* wait for transmit data to clear all layers */ - + if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE) { if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):mgslpc_close(%s) calling tty_wait_until_sent\n", __FILE__,__LINE__, info->device_name ); tty_wait_until_sent(tty, info->closing_wait); } - + if (info->flags & ASYNC_INITIALIZED) mgslpc_wait_until_sent(tty, info->timeout); @@ -2475,24 +2471,24 @@ static void mgslpc_close(struct tty_struct *tty, struct file * filp) tty->driver->flush_buffer(tty); ldisc_flush_buffer(tty); - + shutdown(info); - + tty->closing = 0; info->tty = NULL; - + if (info->blocked_open) { if (info->close_delay) { msleep_interruptible(jiffies_to_msecs(info->close_delay)); } wake_up_interruptible(&info->open_wait); } - + info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); - + wake_up_interruptible(&info->close_wait); - -cleanup: + +cleanup: if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):mgslpc_close(%s) exit, count=%d\n", __FILE__,__LINE__, tty->driver->name, info->count); @@ -2511,31 +2507,31 @@ static void mgslpc_wait_until_sent(struct tty_struct *tty, int timeout) 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 (!(info->flags & ASYNC_INITIALIZED)) 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)); @@ -2554,7 +2550,7 @@ static void mgslpc_wait_until_sent(struct tty_struct *tty, int timeout) break; } } - + exit: if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):mgslpc_wait_until_sent(%s) exit\n", @@ -2567,18 +2563,18 @@ exit: 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); - - info->count = 0; + + info->count = 0; info->flags &= ~ASYNC_NORMAL_ACTIVE; info->tty = NULL; @@ -2595,7 +2591,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp, int retval; int do_clocal = 0, extra_count = 0; unsigned long flags; - + if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):block_til_ready on %s\n", __FILE__,__LINE__, tty->driver->name ); @@ -2616,10 +2612,10 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp, * mgslpc_close() knows when to free things. We restore it upon * exit, either normal or abnormal. */ - + retval = 0; add_wait_queue(&info->open_wait, &wait); - + if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):block_til_ready before block on %s count=%d\n", __FILE__,__LINE__, tty->driver->name, info->count ); @@ -2631,7 +2627,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp, } spin_unlock_irqrestore(&info->lock, flags); info->blocked_open++; - + while (1) { if ((tty->termios->c_cflag & CBAUD)) { spin_lock_irqsave(&info->lock,flags); @@ -2639,50 +2635,50 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp, set_signals(info); spin_unlock_irqrestore(&info->lock,flags); } - + set_current_state(TASK_INTERRUPTIBLE); - + if (tty_hung_up_p(filp) || !(info->flags & ASYNC_INITIALIZED)){ retval = (info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS; break; } - + spin_lock_irqsave(&info->lock,flags); get_signals(info); spin_unlock_irqrestore(&info->lock,flags); - + if (!(info->flags & ASYNC_CLOSING) && (do_clocal || (info->serial_signals & SerialSignal_DCD)) ) { break; } - + if (signal_pending(current)) { retval = -ERESTARTSYS; break; } - + if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):block_til_ready blocking on %s count=%d\n", __FILE__,__LINE__, tty->driver->name, info->count ); - + schedule(); } - + set_current_state(TASK_RUNNING); remove_wait_queue(&info->open_wait, &wait); - + if (extra_count) info->count++; info->blocked_open--; - + if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):block_til_ready after blocking on %s count=%d\n", __FILE__,__LINE__, tty->driver->name, info->count ); - + if (!retval) info->flags |= ASYNC_NORMAL_ACTIVE; - + return retval; } @@ -2692,7 +2688,7 @@ static int mgslpc_open(struct tty_struct *tty, struct file * filp) int retval, line; unsigned long flags; - /* verify range of specified line number */ + /* verify range of specified line number */ line = tty->index; if ((line < 0) || (line >= mgslpc_device_count)) { printk("%s(%d):mgslpc_open with invalid line #%d.\n", @@ -2706,10 +2702,10 @@ static int mgslpc_open(struct tty_struct *tty, struct file * filp) info = info->next_device; if (mgslpc_paranoia_check(info, tty->name, "mgslpc_open")) return -ENODEV; - + tty->driver_data = info; info->tty = tty; - + if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):mgslpc_open(%s), old ref count = %d\n", __FILE__,__LINE__,tty->driver->name, info->count); @@ -2722,7 +2718,7 @@ static int mgslpc_open(struct tty_struct *tty, struct file * filp) -EAGAIN : -ERESTARTSYS); goto cleanup; } - + info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; spin_lock_irqsave(&info->netlock, flags); @@ -2753,15 +2749,15 @@ static int mgslpc_open(struct tty_struct *tty, struct file * filp) printk("%s(%d):mgslpc_open(%s) success\n", __FILE__,__LINE__, info->device_name); retval = 0; - -cleanup: + +cleanup: if (retval) { if (tty->count == 1) info->tty = NULL; /* tty layer will release tty struct */ if(info->count) info->count--; } - + return retval; } @@ -2782,7 +2778,7 @@ static inline int line_info(char *buf, MGSLPC_INFO *info) 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) @@ -2806,7 +2802,7 @@ static inline int line_info(char *buf, MGSLPC_INFO *info) if (info->icount.txabort) ret += sprintf(buf+ret, " txabort:%d", info->icount.txabort); if (info->icount.rxshort) - ret += sprintf(buf+ret, " rxshort:%d", info->icount.rxshort); + ret += sprintf(buf+ret, " rxshort:%d", info->icount.rxshort); if (info->icount.rxlong) ret += sprintf(buf+ret, " rxlong:%d", info->icount.rxlong); if (info->icount.rxover) @@ -2821,18 +2817,18 @@ static inline int line_info(char *buf, MGSLPC_INFO *info) if (info->icount.parity) ret += sprintf(buf+ret, " pe:%d", info->icount.parity); if (info->icount.brk) - ret += sprintf(buf+ret, " brk:%d", info->icount.brk); + ret += sprintf(buf+ret, " brk:%d", info->icount.brk); if (info->icount.overrun) ret += sprintf(buf+ret, " oe:%d", info->icount.overrun); } - + /* Append serial signal status to end */ ret += sprintf(buf+ret, " %s\n", stat_buf+1); - + ret += sprintf(buf+ret, "txactive=%d bh_req=%d bh_run=%d pending_bh=%x\n", info->tx_active,info->bh_requested,info->bh_running, info->pending_bh); - + return ret; } @@ -2844,9 +2840,9 @@ static int mgslpc_read_proc(char *page, char **start, off_t off, int count, int len = 0, l; off_t begin = 0; MGSLPC_INFO *info; - + len += sprintf(page, "synclink driver:%s\n", driver_version); - + info = mgslpc_device_list; while( info ) { l = line_info(page + len, info); @@ -2903,7 +2899,7 @@ static int claim_resources(MGSLPC_INFO *info) printk( "Cant allocate rx buffer %s\n", info->device_name); release_resources(info); return -ENODEV; - } + } return 0; } @@ -2916,7 +2912,7 @@ static void release_resources(MGSLPC_INFO *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 void mgslpc_add_device(MGSLPC_INFO *info) @@ -2924,7 +2920,7 @@ static void mgslpc_add_device(MGSLPC_INFO *info) 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]; @@ -2932,21 +2928,21 @@ static void mgslpc_add_device(MGSLPC_INFO *info) } mgslpc_device_count++; - + if (!mgslpc_device_list) mgslpc_device_list = info; - else { + else { MGSLPC_INFO *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); @@ -3061,7 +3057,7 @@ static int __init synclink_cs_init(void) } /* Initialize the tty_driver structure */ - + serial_driver->owner = THIS_MODULE; serial_driver->driver_name = "synclink_cs"; serial_driver->name = "ttySLP"; @@ -3082,11 +3078,11 @@ static int __init synclink_cs_init(void) serial_driver = NULL; goto error; } - + printk("%s %s, tty major#%d\n", driver_name, driver_version, serial_driver->major); - + return 0; error: @@ -3094,7 +3090,7 @@ error: return rc; } -static void __exit synclink_cs_exit(void) +static void __exit synclink_cs_exit(void) { synclink_cs_cleanup(); } @@ -3107,8 +3103,8 @@ static void mgslpc_set_rate(MGSLPC_INFO *info, unsigned char channel, unsigned i unsigned int M, N; unsigned char val; - /* note:standard BRG mode is broken in V3.2 chip - * so enhanced mode is always used + /* note:standard BRG mode is broken in V3.2 chip + * so enhanced mode is always used */ if (rate) { @@ -3127,7 +3123,7 @@ static void mgslpc_set_rate(MGSLPC_INFO *info, unsigned char channel, unsigned i * 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; @@ -3141,7 +3137,7 @@ static void mgslpc_set_rate(MGSLPC_INFO *info, unsigned char channel, unsigned i static void enable_auxclk(MGSLPC_INFO *info) { unsigned char val; - + /* MODE * * 07..06 MDS[1..0] 10 = transparent HDLC mode @@ -3153,14 +3149,14 @@ static void enable_auxclk(MGSLPC_INFO *info) * 00 TLP Test Loop, 0 = no loop * * 1000 0010 - */ + */ val = 0x82; - - /* channel B RTS is used to enable AUXCLK driver on SP505 */ + + /* 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 @@ -3170,9 +3166,9 @@ static void enable_auxclk(MGSLPC_INFO *info) * 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 @@ -3183,9 +3179,9 @@ static void enable_auxclk(MGSLPC_INFO *info) * 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 @@ -3197,12 +3193,12 @@ static void enable_auxclk(MGSLPC_INFO *info) * 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 @@ -3213,37 +3209,37 @@ static void enable_auxclk(MGSLPC_INFO *info) * 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) +static void loopback_enable(MGSLPC_INFO *info) { unsigned char val; - - /* CCR1:02..00 CM[2..0] Clock Mode = 111 (clock mode 7) */ + + /* 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 */ + + /* 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 */ + + /* 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 */ + + /* MODE:00 TLP Test Loop, 1=loopback enabled */ val = read_reg(info, CHA + MODE) | BIT0; write_reg(info, CHA + MODE, val); } @@ -3253,36 +3249,36 @@ static void hdlc_mode(MGSLPC_INFO *info) unsigned char val; unsigned char clkmode, clksubmode; - /* disable all interrupts */ + /* 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 */ + + /* 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 */ + /* 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 */ + /* 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 */ + /* clock mode 6b, rcv = DPLL, xmt = BRG/16 */ clkmode = 6; clksubmode = 1; } else { - /* clock mode 6a, rcv = DPLL, xmt = TxC */ + /* 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 */ + /* clock mode 0b, rcv = RxC, xmt = BRG */ clksubmode = 1; } - + /* MODE * * 07..06 MDS[1..0] 10 = transparent HDLC mode @@ -3294,16 +3290,16 @@ static void hdlc_mode(MGSLPC_INFO *info) * 00 TLP Test Loop, 0 = no loop * * 1000 0010 - */ + */ val = 0x82; if (info->params.loopback) val |= BIT0; - - /* preserve RTS state */ + + /* 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 @@ -3313,7 +3309,7 @@ static void hdlc_mode(MGSLPC_INFO *info) * 01..00 SM[1..0] Serial Mode, 00=HDLC * * 11000000 - */ + */ val = 0xc0; switch (info->params.encoding) { @@ -3331,7 +3327,7 @@ static void hdlc_mode(MGSLPC_INFO *info) break; // Manchester } write_reg(info, CHA + CCR0, val); - + /* CCR1 * * 07 SFLG Shared Flag, 0 = disable shared flags @@ -3342,10 +3338,10 @@ static void hdlc_mode(MGSLPC_INFO *info) * 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 @@ -3357,7 +3353,7 @@ static void hdlc_mode(MGSLPC_INFO *info) * 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)) @@ -3369,7 +3365,7 @@ static void hdlc_mode(MGSLPC_INFO *info) 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 @@ -3381,7 +3377,7 @@ static void hdlc_mode(MGSLPC_INFO *info) * 00 PSD DPLL Phase Shift Disable * * 0000 0000 - */ + */ val = 0x00; if (info->params.crc_type == HDLC_CRC_NONE) val |= BIT2 + BIT1; @@ -3400,8 +3396,8 @@ static void hdlc_mode(MGSLPC_INFO *info) break; } write_reg(info, CHA + CCR3, val); - - /* PRE - Preamble pattern */ + + /* PRE - Preamble pattern */ val = 0; switch (info->params.preamble) { @@ -3411,7 +3407,7 @@ static void hdlc_mode(MGSLPC_INFO *info) case HDLC_PREAMBLE_PATTERN_ONES: val = 0xff; break; } write_reg(info, CHA + PRE, val); - + /* CCR4 * * 07 MCK4 Master Clock Divide by 4, 1=enabled @@ -3422,21 +3418,21 @@ static void hdlc_mode(MGSLPC_INFO *info) * 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 @@ -3446,7 +3442,7 @@ static void hdlc_mode(MGSLPC_INFO *info) * 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; @@ -3457,7 +3453,7 @@ static void hdlc_mode(MGSLPC_INFO *info) if (info->params.flags & HDLC_FLAG_AUTO_CTS) { irq_enable(info, CHB, IRQ_CTS); - /* PVR[3] 1=AUTO CTS active */ + /* PVR[3] 1=AUTO CTS active */ set_reg_bits(info, CHA + PVR, BIT3); } else clear_reg_bits(info, CHA + PVR, BIT3); @@ -3468,7 +3464,7 @@ static void hdlc_mode(MGSLPC_INFO *info) 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. * @@ -3478,7 +3474,7 @@ static void hdlc_mode(MGSLPC_INFO *info) * * 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); @@ -3493,8 +3489,8 @@ 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 */ + + /* MODE:03 RAC Receiver Active, 0=inactive */ clear_reg_bits(info, CHA + MODE, BIT3); info->rx_enabled = 0; @@ -3511,7 +3507,7 @@ static void rx_start(MGSLPC_INFO *info) info->rx_enabled = 0; info->rx_overflow = 0; - /* MODE:03 RAC Receiver Active, 1=active */ + /* MODE:03 RAC Receiver Active, 1=active */ set_reg_bits(info, CHA + MODE, BIT3); info->rx_enabled = 1; @@ -3522,7 +3518,7 @@ static void tx_start(MGSLPC_INFO *info) 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 */ @@ -3560,8 +3556,8 @@ 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); + + del_timer(&info->tx_timer); info->tx_enabled = 0; info->tx_active = 0; @@ -3571,17 +3567,17 @@ static void tx_stop(MGSLPC_INFO *info) */ static void reset_device(MGSLPC_INFO *info) { - /* power up both channels (set BIT7) */ + /* 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 */ + + /* 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 @@ -3591,9 +3587,9 @@ static void reset_device(MGSLPC_INFO *info) * 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) @@ -3605,7 +3601,7 @@ static void reset_device(MGSLPC_INFO *info) * 0000 0001 */ // write_reg(info, PVR, PVR_DTR); - + /* IPC Interrupt Port Configuration * * 07 VIS 1=Masked interrupts visible @@ -3615,7 +3611,7 @@ static void reset_device(MGSLPC_INFO *info) * 01..00 IC[1..0] Interrupt Config, 01=push-pull output, active low * * 0000 0101 - */ + */ write_reg(info, IPC, 0x05); } @@ -3623,11 +3619,11 @@ static void async_mode(MGSLPC_INFO *info) { unsigned char val; - /* disable all interrupts */ + /* disable all interrupts */ irq_disable(info, CHA, 0xffff); irq_disable(info, CHB, 0xffff); port_irq_disable(info, 0xff); - + /* MODE * * 07 Reserved, 0 @@ -3640,16 +3636,16 @@ static void async_mode(MGSLPC_INFO *info) * 00 TLP Test Loop, 0 = no loop * * 0000 0110 - */ + */ val = 0x06; if (info->params.loopback) val |= BIT0; - - /* preserve RTS state */ + + /* 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 @@ -3659,9 +3655,9 @@ static void async_mode(MGSLPC_INFO *info) * 01..00 SM[1..0] Serial Mode, 11=Async * * 1000 0011 - */ + */ write_reg(info, CHA + CCR0, 0x83); - + /* CCR1 * * 07..05 Reserved, 0 @@ -3670,9 +3666,9 @@ static void async_mode(MGSLPC_INFO *info) * 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 @@ -3684,18 +3680,18 @@ static void async_mode(MGSLPC_INFO *info) * 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 @@ -3705,10 +3701,10 @@ static void async_mode(MGSLPC_INFO *info) * 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 @@ -3718,7 +3714,7 @@ static void async_mode(MGSLPC_INFO *info) * 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 */ @@ -3733,7 +3729,7 @@ static void async_mode(MGSLPC_INFO *info) val |= BIT4; } write_reg(info, CHA + DAFO, val); - + /* RFC Rx FIFO Control * * 07 Reserved, 0 @@ -3745,15 +3741,15 @@ static void async_mode(MGSLPC_INFO *info) * 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 @@ -3763,20 +3759,20 @@ static void async_mode(MGSLPC_INFO *info) * 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 */ + + /* 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 */ + /* PVR[3] 1=AUTO CTS active */ set_reg_bits(info, CHA + PVR, BIT3); } else clear_reg_bits(info, CHA + PVR, BIT3); @@ -3792,7 +3788,7 @@ static void async_mode(MGSLPC_INFO *info) */ static void tx_set_idle(MGSLPC_INFO *info) { - /* Note: ESCC2 only supports flags and one idle modes */ + /* Note: ESCC2 only supports flags and one idle modes */ if (info->idle_mode == HDLC_TXIDLE_FLAGS) set_reg_bits(info, CHA + CCR1, BIT3); else @@ -3804,8 +3800,8 @@ static void tx_set_idle(MGSLPC_INFO *info) static void get_signals(MGSLPC_INFO *info) { unsigned char status = 0; - - /* preserve DTR and RTS */ + + /* preserve DTR and RTS */ info->serial_signals &= SerialSignal_DTR + SerialSignal_RTS; if (read_reg(info, CHB + VSTR) & BIT7) @@ -3874,7 +3870,7 @@ static int rx_get_frame(MGSLPC_INFO *info) unsigned long flags; struct tty_struct *tty = info->tty; int return_frame = 0; - + if (info->rx_frame_count == 0) return 0; @@ -3914,10 +3910,10 @@ static int rx_get_frame(MGSLPC_INFO *info) 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); - + trace_block(info, buf->data, framesize, 0); + if (framesize) { if ((info->params.crc_type & HDLC_CRC_RETURN_EX && framesize+1 > info->max_frame_size) || @@ -3954,7 +3950,7 @@ static int rx_get_frame(MGSLPC_INFO *info) static BOOLEAN register_test(MGSLPC_INFO *info) { - static unsigned char patterns[] = + static unsigned char patterns[] = { 0x00, 0xff, 0xaa, 0x55, 0x69, 0x96, 0x0f }; static unsigned int count = ARRAY_SIZE(patterns); unsigned int i; @@ -4003,13 +3999,13 @@ static BOOLEAN irq_test(MGSLPC_INFO *info) 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 ? TRUE : FALSE; } @@ -4043,13 +4039,13 @@ static void trace_block(MGSLPC_INFO *info,const char* data, int count, int 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= DEBUG_LEVEL_INFO ) printk( "%s(%d):tx_timeout(%s)\n", __FILE__,__LINE__,info->device_name); @@ -4087,7 +4083,7 @@ static void tx_timeout(unsigned long context) 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);