diff options
Diffstat (limited to 'drivers/char/pcmcia/synclink_cs.c')
| -rw-r--r-- | drivers/char/pcmcia/synclink_cs.c | 2500 |
1 files changed, 1141 insertions, 1359 deletions
diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c index 8a8ca32822b..8320abd1ef1 100644 --- a/drivers/char/pcmcia/synclink_cs.c +++ b/drivers/char/pcmcia/synclink_cs.c @@ -35,7 +35,6 @@ #define MAX_DEVICE_COUNT 4 -#include <linux/config.h> #include <linux/module.h> #include <linux/errno.h> #include <linux/signal.h> @@ -43,7 +42,6 @@ #include <linux/timer.h> #include <linux/time.h> #include <linux/interrupt.h> -#include <linux/pci.h> #include <linux/tty.h> #include <linux/tty_flip.h> #include <linux/serial.h> @@ -53,15 +51,15 @@ #include <linux/ptrace.h> #include <linux/ioport.h> #include <linux/mm.h> +#include <linux/seq_file.h> #include <linux/slab.h> #include <linux/netdevice.h> #include <linux/vmalloc.h> #include <linux/init.h> -#include <asm/serial.h> #include <linux/delay.h> #include <linux/ioctl.h> +#include <linux/synclink.h> -#include <asm/system.h> #include <asm/io.h> #include <asm/irq.h> #include <asm/dma.h> @@ -71,14 +69,14 @@ #include <linux/workqueue.h> #include <linux/hdlc.h> -#include <pcmcia/cs_types.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ds.h> -#ifdef CONFIG_HDLC_MODULE -#define CONFIG_HDLC 1 +#if defined(CONFIG_HDLC) || (defined(CONFIG_HDLC_MODULE) && defined(CONFIG_SYNCLINK_CS_MODULE)) +#define SYNCLINK_GENERIC_HDLC 1 +#else +#define SYNCLINK_GENERIC_HDLC 0 #endif #define GET_USER(error,value,addr) error = get_user(value,addr) @@ -88,8 +86,6 @@ #include <asm/uaccess.h> -#include "linux/synclink.h" - static MGSL_PARAMS default_params = { MGSL_MODE_HDLC, /* unsigned long mode */ 0, /* unsigned char loopback; */ @@ -106,8 +102,7 @@ static MGSL_PARAMS default_params = { ASYNC_PARITY_NONE /* unsigned char parity; */ }; -typedef struct -{ +typedef struct { int count; unsigned char status; char data[1]; @@ -124,7 +119,7 @@ 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; @@ -138,24 +133,19 @@ struct _input_signal_events { /* * Device instance data structure */ - + typedef struct _mgslpc_info { + struct tty_port port; void *if_ptr; /* General purpose pointer (used by SPPP) */ int magic; - int flags; - int count; /* count of opens */ 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; @@ -171,10 +161,7 @@ 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 */ @@ -191,20 +178,20 @@ typedef struct _mgslpc_info { u32 pending_bh; - int bh_running; - int bh_requested; - + bool bh_running; + bool bh_requested; + int dcd_chkcount; /* check counts to prevent */ int cts_chkcount; /* too many IRQs if a signal */ int dsr_chkcount; /* is floating */ int ri_chkcount; - int rx_enabled; - int rx_overflow; + bool rx_enabled; + bool rx_overflow; - int tx_enabled; - int tx_active; - int tx_aborting; + bool tx_enabled; + bool tx_active; + bool tx_aborting; u32 idle_mode; int if_mode; /* serial interface selection (RS-232, v.35 etc) */ @@ -213,31 +200,29 @@ 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 */ - char irq_occurred; /* for diagnostics use */ + bool irq_occurred; /* for diagnostics use */ char testing_irq; unsigned int init_error; /* startup error (DIAGS) */ - char flag_buf[MAX_ASYNC_BUFFER_SIZE]; - BOOLEAN drop_rts_on_tx_done; + char *flag_buf; + bool drop_rts_on_tx_done; struct _input_signal_events input_signal_events; /* PCMCIA support */ - dev_link_t link; - dev_node_t node; + struct pcmcia_device *p_dev; int stop; /* SPPP/Cisco HDLC device parts */ int netcount; - int dosyncppp; spinlock_t netlock; -#ifdef CONFIG_HDLC +#if SYNCLINK_GENERIC_HDLC struct net_device *netdev; #endif @@ -250,7 +235,7 @@ typedef struct _mgslpc_info { */ #define TXBUFSIZE 4096 - + #define CHA 0x00 /* channel A offset */ #define CHB 0x40 /* channel B offset */ @@ -299,9 +284,9 @@ 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 @@ -316,13 +301,13 @@ 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 @@ -330,25 +315,25 @@ 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))) + write_reg(info, (reg), \ + (unsigned char) (read_reg(info, (reg)) | (mask))) #define clear_reg_bits(info, reg, mask) \ - write_reg(info, (reg), \ - (unsigned char) (read_reg(info, (reg)) & ~(mask))) + write_reg(info, (reg), \ + (unsigned char) (read_reg(info, (reg)) & ~(mask))) /* * interrupt enable/disable routines - */ -static void irq_disable(MGSLPC_INFO *info, unsigned char channel, unsigned short mask) + */ +static void irq_disable(MGSLPC_INFO *info, unsigned char channel, unsigned short mask) { if (channel == CHA) { info->imra_value |= mask; @@ -358,7 +343,7 @@ 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; @@ -370,15 +355,15 @@ static void irq_enable(MGSLPC_INFO *info, unsigned char channel, unsigned short } #define port_irq_disable(info, mask) \ - { info->pim_value |= (mask); write_reg(info, PIM, info->pim_value); } + { info->pim_value |= (mask); write_reg(info, PIM, info->pim_value); } #define port_irq_enable(info, mask) \ - { info->pim_value &= ~(mask); write_reg(info, PIM, info->pim_value); } + { info->pim_value &= ~(mask); write_reg(info, PIM, info->pim_value); } static void rx_start(MGSLPC_INFO *info); static void rx_stop(MGSLPC_INFO *info); -static void tx_start(MGSLPC_INFO *info); +static void tx_start(MGSLPC_INFO *info, struct tty_struct *tty); static void tx_stop(MGSLPC_INFO *info); static void tx_set_idle(MGSLPC_INFO *info); @@ -392,9 +377,10 @@ static void async_mode(MGSLPC_INFO *info); static void tx_timeout(unsigned long context); -static int ioctl_common(MGSLPC_INFO *info, unsigned int cmd, unsigned long arg); +static int carrier_raised(struct tty_port *port); +static void dtr_rts(struct tty_port *port, int onoff); -#ifdef CONFIG_HDLC +#if SYNCLINK_GENERIC_HDLC #define dev_to_port(D) (dev_to_hdlc(D)->priv) static void hdlcdev_tx_done(MGSLPC_INFO *info); static void hdlcdev_rx(MGSLPC_INFO *info, char *buf, int size); @@ -404,41 +390,41 @@ static void hdlcdev_exit(MGSLPC_INFO *info); static void trace_block(MGSLPC_INFO *info,const char* data, int count, int xmit); -static BOOLEAN register_test(MGSLPC_INFO *info); -static BOOLEAN irq_test(MGSLPC_INFO *info); +static bool register_test(MGSLPC_INFO *info); +static bool irq_test(MGSLPC_INFO *info); static int adapter_test(MGSLPC_INFO *info); static int claim_resources(MGSLPC_INFO *info); static void release_resources(MGSLPC_INFO *info); -static void mgslpc_add_device(MGSLPC_INFO *info); +static int mgslpc_add_device(MGSLPC_INFO *info); static void mgslpc_remove_device(MGSLPC_INFO *info); -static int rx_get_frame(MGSLPC_INFO *info); +static bool rx_get_frame(MGSLPC_INFO *info, struct tty_struct *tty); static void rx_reset_buffers(MGSLPC_INFO *info); static int rx_alloc_buffers(MGSLPC_INFO *info); static void rx_free_buffers(MGSLPC_INFO *info); -static irqreturn_t mgslpc_isr(int irq, void *dev_id, struct pt_regs * regs); +static irqreturn_t mgslpc_isr(int irq, void *dev_id); /* * Bottom half interrupt handlers */ -static void bh_handler(void* Context); -static void bh_transmit(MGSLPC_INFO *info); +static void bh_handler(struct work_struct *work); +static void bh_transmit(MGSLPC_INFO *info, struct tty_struct *tty); static void bh_status(MGSLPC_INFO *info); /* * ioctl handlers */ -static int tiocmget(struct tty_struct *tty, struct file *file); -static int tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear); +static int tiocmget(struct tty_struct *tty); +static int tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear); static int get_stats(MGSLPC_INFO *info, struct mgsl_icount __user *user_icount); static int get_params(MGSLPC_INFO *info, MGSL_PARAMS __user *user_params); -static int set_params(MGSLPC_INFO *info, MGSL_PARAMS __user *new_params); +static int set_params(MGSLPC_INFO *info, MGSL_PARAMS __user *new_params, struct tty_struct *tty); static int get_txidle(MGSLPC_INFO *info, int __user *idle_mode); static int set_txidle(MGSLPC_INFO *info, int idle_mode); -static int set_txenable(MGSLPC_INFO *info, int enable); +static int set_txenable(MGSLPC_INFO *info, int enable, struct tty_struct *tty); static int tx_abort(MGSLPC_INFO *info); static int set_rxenable(MGSLPC_INFO *info, int enable); static int wait_events(MGSLPC_INFO *info, int __user *mask); @@ -451,7 +437,7 @@ static int mgslpc_device_count = 0; * .text section address and breakpoint on module load. * This is useful for use with gdb and add-symbol-file command. */ -static int break_on_load=0; +static bool break_on_load=0; /* * Driver major number, defaults to zero to get auto @@ -461,13 +447,11 @@ static int ttymajor=0; static int debug_level = 0; static int maxframe[MAX_DEVICE_COUNT] = {0,}; -static int dosyncppp[MAX_DEVICE_COUNT] = {1,1,1,1}; module_param(break_on_load, bool, 0); module_param(ttymajor, int, 0); module_param(debug_level, int, 0); module_param_array(maxframe, int, NULL, 0); -module_param_array(dosyncppp, int, NULL, 0); MODULE_LICENSE("GPL"); @@ -479,12 +463,12 @@ static struct tty_driver *serial_driver; /* number of characters left in xmit buffer before we ask for more */ #define WAKEUP_CHARS 256 -static void mgslpc_change_params(MGSLPC_INFO *info); +static void mgslpc_change_params(MGSLPC_INFO *info, struct tty_struct *tty); static void mgslpc_wait_until_sent(struct tty_struct *tty, int timeout); /* PCMCIA prototypes */ -static void mgslpc_config(dev_link_t *link); +static int mgslpc_config(struct pcmcia_device *link); static void mgslpc_release(u_long arg); static void mgslpc_detach(struct pcmcia_device *p_dev); @@ -505,20 +489,9 @@ static void* mgslpc_get_text_ptr(void) * The wrappers maintain line discipline references * while calling into the line discipline. * - * ldisc_flush_buffer - flush line discipline receive buffers * ldisc_receive_buf - pass receive data to line discipline */ -static void ldisc_flush_buffer(struct tty_struct *tty) -{ - struct tty_ldisc *ld = tty_ldisc_ref(tty); - if (ld) { - if (ld->flush_buffer) - ld->flush_buffer(tty); - tty_ldisc_deref(ld); - } -} - static void ldisc_receive_buf(struct tty_struct *tty, const __u8 *data, char *flags, int count) { @@ -527,176 +500,110 @@ static void ldisc_receive_buf(struct tty_struct *tty, return; ld = tty_ldisc_ref(tty); if (ld) { - if (ld->receive_buf) - ld->receive_buf(tty, data, flags, count); + if (ld->ops->receive_buf) + ld->ops->receive_buf(tty, data, flags, count); tty_ldisc_deref(ld); } } -static int mgslpc_attach(struct pcmcia_device *p_dev) +static const struct tty_port_operations mgslpc_port_ops = { + .carrier_raised = carrier_raised, + .dtr_rts = dtr_rts +}; + +static int mgslpc_probe(struct pcmcia_device *link) { - MGSLPC_INFO *info; - dev_link_t *link; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("mgslpc_attach\n"); - - info = (MGSLPC_INFO *)kmalloc(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); - info->max_frame_size = 4096; - info->close_delay = 5*HZ/10; - info->closing_wait = 30*HZ; - init_waitqueue_head(&info->open_wait); - init_waitqueue_head(&info->close_wait); - init_waitqueue_head(&info->status_event_wait_q); - init_waitqueue_head(&info->event_wait_q); - spin_lock_init(&info->lock); - spin_lock_init(&info->netlock); - memcpy(&info->params,&default_params,sizeof(MGSL_PARAMS)); - info->idle_mode = HDLC_TXIDLE_FLAGS; - info->imra_value = 0xffff; - info->imrb_value = 0xffff; - info->pim_value = 0xff; - - link = &info->link; - link->priv = info; - - /* Initialize the dev_link_t structure */ - - /* Interrupt setup */ - link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; - link->irq.IRQInfo1 = IRQ_LEVEL_ID; - link->irq.Handler = NULL; - - link->conf.Attributes = 0; - link->conf.Vcc = 50; - link->conf.IntType = INT_MEMORY_AND_IO; - - link->handle = p_dev; - p_dev->instance = link; - - link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; - mgslpc_config(link); - - mgslpc_add_device(info); - - return 0; + MGSLPC_INFO *info; + int ret; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("mgslpc_attach\n"); + + info = kzalloc(sizeof(MGSLPC_INFO), GFP_KERNEL); + if (!info) { + printk("Error can't allocate device instance data\n"); + return -ENOMEM; + } + + info->magic = MGSLPC_MAGIC; + tty_port_init(&info->port); + info->port.ops = &mgslpc_port_ops; + INIT_WORK(&info->task, bh_handler); + info->max_frame_size = 4096; + info->port.close_delay = 5*HZ/10; + info->port.closing_wait = 30*HZ; + init_waitqueue_head(&info->status_event_wait_q); + init_waitqueue_head(&info->event_wait_q); + spin_lock_init(&info->lock); + spin_lock_init(&info->netlock); + memcpy(&info->params,&default_params,sizeof(MGSL_PARAMS)); + info->idle_mode = HDLC_TXIDLE_FLAGS; + info->imra_value = 0xffff; + info->imrb_value = 0xffff; + info->pim_value = 0xff; + + info->p_dev = link; + link->priv = info; + + /* Initialize the struct pcmcia_device structure */ + + ret = mgslpc_config(link); + if (ret != 0) + goto failed; + + ret = mgslpc_add_device(info); + if (ret != 0) + goto failed_release; + + return 0; + +failed_release: + mgslpc_release((u_long)link); +failed: + tty_port_destroy(&info->port); + kfree(info); + return ret; } /* Card has been inserted. */ -#define CS_CHECK(fn, ret) \ -do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) +static int mgslpc_ioprobe(struct pcmcia_device *p_dev, void *priv_data) +{ + return pcmcia_request_io(p_dev); +} -static void mgslpc_config(dev_link_t *link) +static int mgslpc_config(struct pcmcia_device *link) { - client_handle_t handle = link->handle; - MGSLPC_INFO *info = link->priv; - tuple_t tuple; - cisparse_t parse; - int last_fn, last_ret; - u_char buf[64]; - config_info_t conf; - cistpl_cftable_entry_t dflt = { 0 }; - cistpl_cftable_entry_t *cfg; - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("mgslpc_config(0x%p)\n", link); - - /* read CONFIG tuple to find its configuration registers */ - tuple.DesiredTuple = CISTPL_CONFIG; - tuple.Attributes = 0; - tuple.TupleData = buf; - tuple.TupleDataMax = sizeof(buf); - tuple.TupleOffset = 0; - CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); - CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple)); - CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse)); - link->conf.ConfigBase = parse.config.base; - link->conf.Present = parse.config.rmask[0]; - - /* Configure card */ - link->state |= DEV_CONFIG; - - /* Look up the current Vcc */ - CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf)); - link->conf.Vcc = conf.Vcc; - - /* get CIS configuration entry */ - - tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; - CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple)); - - cfg = &(parse.cftable_entry); - CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple)); - CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse)); - - if (cfg->flags & CISTPL_CFTABLE_DEFAULT) dflt = *cfg; - if (cfg->index == 0) - goto cs_failed; - - 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)) { - cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io; - link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; - if (!(io->flags & CISTPL_IO_8BIT)) - link->io.Attributes1 = IO_DATA_PATH_WIDTH_16; - if (!(io->flags & CISTPL_IO_16BIT)) - link->io.Attributes1 = IO_DATA_PATH_WIDTH_8; - link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK; - link->io.BasePort1 = io->win[0].base; - link->io.NumPorts1 = io->win[0].len; - CS_CHECK(RequestIO, pcmcia_request_io(link->handle, &link->io)); - } - - link->conf.Attributes = CONF_ENABLE_IRQ; - link->conf.Vcc = 50; - 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; - CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq)); - - CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf)); - - info->io_base = link->io.BasePort1; - info->irq_level = link->irq.AssignedIRQ; - - /* add to linked list of devices */ - sprintf(info->node.dev_name, "mgslpc0"); - info->node.major = info->node.minor = 0; - link->dev = &info->node; - - printk(KERN_INFO "%s: index 0x%02x:", - info->node.dev_name, link->conf.ConfigIndex); - if (link->conf.Attributes & CONF_ENABLE_IRQ) - printk(", irq %d", link->irq.AssignedIRQ); - if (link->io.NumPorts1) - printk(", io 0x%04x-0x%04x", link->io.BasePort1, - link->io.BasePort1+link->io.NumPorts1-1); - printk("\n"); - - link->state &= ~DEV_CONFIG_PENDING; - return; - -cs_failed: - cs_error(link->handle, last_fn, last_ret); - mgslpc_release((u_long)link); + MGSLPC_INFO *info = link->priv; + int ret; + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("mgslpc_config(0x%p)\n", link); + + link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; + + ret = pcmcia_loop_config(link, mgslpc_ioprobe, NULL); + if (ret != 0) + goto failed; + + link->config_index = 8; + link->config_regs = PRESENT_OPTION; + + ret = pcmcia_request_irq(link, mgslpc_isr); + if (ret) + goto failed; + ret = pcmcia_enable_device(link); + if (ret) + goto failed; + + info->io_base = link->resource[0]->start; + info->irq_level = link->irq; + return 0; + +failed: + mgslpc_release((u_long)link); + return -ENODEV; } /* Card has been removed. @@ -705,65 +612,45 @@ cs_failed: */ static void mgslpc_release(u_long arg) { - dev_link_t *link = (dev_link_t *)arg; + struct pcmcia_device *link = (struct pcmcia_device *)arg; - if (debug_level >= DEBUG_LEVEL_INFO) - printk("mgslpc_release(0x%p)\n", link); - - /* Unlink the device chain */ - link->dev = NULL; - link->state &= ~DEV_CONFIG; + if (debug_level >= DEBUG_LEVEL_INFO) + printk("mgslpc_release(0x%p)\n", link); - pcmcia_release_configuration(link->handle); - if (link->io.NumPorts1) - pcmcia_release_io(link->handle, &link->io); - if (link->irq.AssignedIRQ) - pcmcia_release_irq(link->handle, &link->irq); + pcmcia_disable_device(link); } -static void mgslpc_detach(struct pcmcia_device *p_dev) +static void mgslpc_detach(struct pcmcia_device *link) { - dev_link_t *link = dev_to_instance(p_dev); - - if (debug_level >= DEBUG_LEVEL_INFO) - printk("mgslpc_detach(0x%p)\n", link); + if (debug_level >= DEBUG_LEVEL_INFO) + printk("mgslpc_detach(0x%p)\n", link); - if (link->state & DEV_CONFIG) { - ((MGSLPC_INFO *)link->priv)->stop = 1; - mgslpc_release((u_long)link); - } + ((MGSLPC_INFO *)link->priv)->stop = 1; + mgslpc_release((u_long)link); - mgslpc_remove_device((MGSLPC_INFO *)link->priv); + mgslpc_remove_device((MGSLPC_INFO *)link->priv); } -static int mgslpc_suspend(struct pcmcia_device *dev) +static int mgslpc_suspend(struct pcmcia_device *link) { - dev_link_t *link = dev_to_instance(dev); MGSLPC_INFO *info = link->priv; - link->state |= DEV_SUSPEND; info->stop = 1; - if (link->state & DEV_CONFIG) - pcmcia_release_configuration(link->handle); return 0; } -static int mgslpc_resume(struct pcmcia_device *dev) +static int mgslpc_resume(struct pcmcia_device *link) { - dev_link_t *link = dev_to_instance(dev); MGSLPC_INFO *info = link->priv; - link->state &= ~DEV_SUSPEND; - if (link->state & DEV_CONFIG) - pcmcia_request_configuration(link->handle, &link->conf); info->stop = 0; return 0; } -static inline int mgslpc_paranoia_check(MGSLPC_INFO *info, +static inline bool mgslpc_paranoia_check(MGSLPC_INFO *info, char *name, const char *routine) { #ifdef MGSLPC_PARANOIA_CHECK @@ -774,17 +661,17 @@ static inline int mgslpc_paranoia_check(MGSLPC_INFO *info, if (!info) { printk(badinfo, name, routine); - return 1; + return true; } if (info->magic != MGSLPC_MAGIC) { printk(badmagic, name, routine); - return 1; + return true; } #else if (!info) - return 1; + return true; #endif - return 0; + return false; } @@ -796,19 +683,19 @@ 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 bool 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) - return FALSE; + return false; } - return TRUE; + 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); @@ -818,32 +705,32 @@ static void tx_pause(struct tty_struct *tty) { MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; unsigned long flags; - + if (mgslpc_paranoia_check(info, tty->name, "tx_pause")) return; if (debug_level >= DEBUG_LEVEL_INFO) - printk("tx_pause(%s)\n",info->device_name); - - spin_lock_irqsave(&info->lock,flags); + printk("tx_pause(%s)\n", info->device_name); + + spin_lock_irqsave(&info->lock, flags); if (info->tx_enabled) - tx_stop(info); - spin_unlock_irqrestore(&info->lock,flags); + tx_stop(info); + spin_unlock_irqrestore(&info->lock, flags); } static void tx_release(struct tty_struct *tty) { MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; unsigned long flags; - + if (mgslpc_paranoia_check(info, tty->name, "tx_release")) return; if (debug_level >= DEBUG_LEVEL_INFO) - printk("tx_release(%s)\n",info->device_name); - - spin_lock_irqsave(&info->lock,flags); + printk("tx_release(%s)\n", info->device_name); + + spin_lock_irqsave(&info->lock, flags); if (!info->tx_enabled) - tx_start(info); - spin_unlock_irqrestore(&info->lock,flags); + tx_start(info, tty); + spin_unlock_irqrestore(&info->lock, flags); } /* Return next bottom half action to perform. @@ -853,8 +740,8 @@ static int bh_action(MGSLPC_INFO *info) { unsigned long flags; int rc = 0; - - spin_lock_irqsave(&info->lock,flags); + + spin_lock_irqsave(&info->lock, flags); if (info->pending_bh & BH_RECEIVE) { info->pending_bh &= ~BH_RECEIVE; @@ -869,43 +756,42 @@ static int bh_action(MGSLPC_INFO *info) if (!rc) { /* Mark BH routine as complete */ - info->bh_running = 0; - info->bh_requested = 0; + info->bh_running = false; + info->bh_requested = false; } - - spin_unlock_irqrestore(&info->lock,flags); - + + spin_unlock_irqrestore(&info->lock, flags); + return rc; } -void bh_handler(void* Context) +static void bh_handler(struct work_struct *work) { - MGSLPC_INFO *info = (MGSLPC_INFO*)Context; + MGSLPC_INFO *info = container_of(work, MGSLPC_INFO, task); + struct tty_struct *tty; int action; - if (!info) - return; - if (debug_level >= DEBUG_LEVEL_BH) - printk( "%s(%d):bh_handler(%s) entry\n", + printk("%s(%d):bh_handler(%s) entry\n", __FILE__,__LINE__,info->device_name); - - info->bh_running = 1; + + info->bh_running = true; + tty = tty_port_tty_get(&info->port); while((action = bh_action(info)) != 0) { - + /* Process work item */ - if ( debug_level >= DEBUG_LEVEL_BH ) - printk( "%s(%d):bh_handler() work item action=%d\n", + 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)); + while(rx_get_frame(info, tty)); break; case BH_TRANSMIT: - bh_transmit(info); + bh_transmit(info, tty); break; case BH_STATUS: bh_status(info); @@ -917,24 +803,22 @@ void bh_handler(void* Context) } } + tty_kref_put(tty); if (debug_level >= DEBUG_LEVEL_BH) - printk( "%s(%d):bh_handler(%s) exit\n", + printk("%s(%d):bh_handler(%s) exit\n", __FILE__,__LINE__,info->device_name); } -void bh_transmit(MGSLPC_INFO *info) +static void bh_transmit(MGSLPC_INFO *info, struct tty_struct *tty) { - struct tty_struct *tty = info->tty; if (debug_level >= DEBUG_LEVEL_BH) printk("bh_transmit() entry on %s\n", info->device_name); - if (tty) { + if (tty) tty_wakeup(tty); - wake_up_interruptible(&tty->write_wait); - } } -void bh_status(MGSLPC_INFO *info) +static void bh_status(MGSLPC_INFO *info) { info->ri_chkcount = 0; info->dsr_chkcount = 0; @@ -942,7 +826,7 @@ 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]; @@ -950,8 +834,8 @@ static void rx_ready_hdlc(MGSLPC_INFO *info, int eom) RXBUF *buf = (RXBUF*)(info->rx_buf + (info->rx_put * info->rx_buf_size)); if (debug_level >= DEBUG_LEVEL_ISR) - printk("%s(%d):rx_ready_hdlc(eom=%d)\n",__FILE__,__LINE__,eom); - + printk("%s(%d):rx_ready_hdlc(eom=%d)\n", __FILE__, __LINE__, eom); + if (!info->rx_enabled) return; @@ -959,18 +843,19 @@ static void rx_ready_hdlc(MGSLPC_INFO *info, int eom) /* no more free buffers */ issue_command(info, CHA, CMD_RXRESET); info->pending_bh |= BH_RECEIVE; - info->rx_overflow = 1; + info->rx_overflow = true; info->icount.buf_overrun++; return; } if (eom) { - /* end of frame, get FIFO count from RBCL register */ - if (!(fifo_count = (unsigned char)(read_reg(info, CHA+RBCL) & 0x1f))) + /* end of frame, get FIFO count from RBCL register */ + fifo_count = (unsigned char)(read_reg(info, CHA+RBCL) & 0x1f); + if (fifo_count == 0) fifo_count = 32; } else fifo_count = 32; - + do { if (fifo_count == 1) { read_count = 1; @@ -1007,14 +892,14 @@ static void rx_ready_hdlc(MGSLPC_INFO *info, int eom) static void rx_ready_async(MGSLPC_INFO *info, int tcd) { + struct tty_port *port = &info->port; unsigned char data, status, flag; int fifo_count; int work = 0; - struct tty_struct *tty = info->tty; - struct mgsl_icount *icount = &info->icount; + 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. @@ -1025,8 +910,8 @@ static void rx_ready_async(MGSLPC_INFO *info, int tcd) } else fifo_count = 32; - tty_buffer_request_room(tty, fifo_count); - /* Flush received async data to receive data buffer. */ + tty_buffer_request_room(port, fifo_count); + /* Flush received async data to receive data buffer. */ while (fifo_count) { data = read_reg(info, CHA + RXFIFO); status = read_reg(info, CHA + RXFIFO); @@ -1040,7 +925,7 @@ 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++; @@ -1048,7 +933,7 @@ 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) @@ -1056,7 +941,7 @@ static void rx_ready_async(MGSLPC_INFO *info, int tcd) else if (status & BIT6) flag = TTY_FRAME; } - work += tty_insert_flip_char(tty, data, flag); + work += tty_insert_flip_char(port, data, flag); } issue_command(info, CHA, CMD_RXFIFO); @@ -1067,42 +952,42 @@ 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); + tty_flip_buffer_push(port); } -static void tx_done(MGSLPC_INFO *info) +static void tx_done(MGSLPC_INFO *info, struct tty_struct *tty) { if (!info->tx_active) return; - - info->tx_active = 0; - info->tx_aborting = 0; + + info->tx_active = false; + info->tx_aborting = false; if (info->params.mode == MGSL_MODE_ASYNC) return; info->tx_count = info->tx_put = info->tx_get = 0; - del_timer(&info->tx_timer); - + del_timer(&info->tx_timer); + if (info->drop_rts_on_tx_done) { get_signals(info); if (info->serial_signals & SerialSignal_RTS) { info->serial_signals &= ~SerialSignal_RTS; set_signals(info); } - info->drop_rts_on_tx_done = 0; + info->drop_rts_on_tx_done = false; } -#ifdef CONFIG_HDLC +#if SYNCLINK_GENERIC_HDLC if (info->netcount) hdlcdev_tx_done(info); - else + else #endif { - if (info->tty->stopped || info->tty->hw_stopped) { + if (tty && (tty->stopped || tty->hw_stopped)) { tx_stop(info); return; } @@ -1110,24 +995,24 @@ static void tx_done(MGSLPC_INFO *info) } } -static void tx_ready(MGSLPC_INFO *info) +static void tx_ready(MGSLPC_INFO *info, struct tty_struct *tty) { unsigned char fifo_count = 32; int c; if (debug_level >= DEBUG_LEVEL_ISR) - printk("%s(%d):tx_ready(%s)\n", __FILE__,__LINE__,info->device_name); + printk("%s(%d):tx_ready(%s)\n", __FILE__, __LINE__, info->device_name); if (info->params.mode == MGSL_MODE_HDLC) { if (!info->tx_active) return; } else { - if (info->tty->stopped || info->tty->hw_stopped) { + if (tty && (tty->stopped || tty->hw_stopped)) { tx_stop(info); return; } if (!info->tx_count) - info->tx_active = 0; + info->tx_active = false; } if (!info->tx_count) @@ -1135,7 +1020,7 @@ 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 { @@ -1159,7 +1044,7 @@ static void tx_ready(MGSLPC_INFO *info) } } -static void cts_change(MGSLPC_INFO *info) +static void cts_change(MGSLPC_INFO *info, struct tty_struct *tty) { get_signals(info); if ((info->cts_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) @@ -1172,14 +1057,13 @@ static void cts_change(MGSLPC_INFO *info) wake_up_interruptible(&info->status_event_wait_q); wake_up_interruptible(&info->event_wait_q); - if (info->flags & ASYNC_CTS_FLOW) { - if (info->tty->hw_stopped) { + if (tty && tty_port_cts_enabled(&info->port)) { + if (tty->hw_stopped) { if (info->serial_signals & SerialSignal_CTS) { if (debug_level >= DEBUG_LEVEL_ISR) printk("CTS tx start..."); - if (info->tty) - info->tty->hw_stopped = 0; - tx_start(info); + tty->hw_stopped = 0; + tx_start(info, tty); info->pending_bh |= BH_TRANSMIT; return; } @@ -1187,8 +1071,7 @@ static void cts_change(MGSLPC_INFO *info) if (!(info->serial_signals & SerialSignal_CTS)) { if (debug_level >= DEBUG_LEVEL_ISR) printk("CTS tx stop..."); - if (info->tty) - info->tty->hw_stopped = 1; + tty->hw_stopped = 1; tx_stop(info); } } @@ -1196,7 +1079,7 @@ static void cts_change(MGSLPC_INFO *info) info->pending_bh |= BH_STATUS; } -static void dcd_change(MGSLPC_INFO *info) +static void dcd_change(MGSLPC_INFO *info, struct tty_struct *tty) { get_signals(info); if ((info->dcd_chkcount)++ >= IO_PIN_SHUTDOWN_LIMIT) @@ -1207,24 +1090,28 @@ static void dcd_change(MGSLPC_INFO *info) } else info->input_signal_events.dcd_down++; -#ifdef CONFIG_HDLC - if (info->netcount) - hdlc_set_carrier(info->serial_signals & SerialSignal_DCD, info->netdev); +#if SYNCLINK_GENERIC_HDLC + if (info->netcount) { + if (info->serial_signals & SerialSignal_DCD) + netif_carrier_on(info->netdev); + else + netif_carrier_off(info->netdev); + } #endif wake_up_interruptible(&info->status_event_wait_q); wake_up_interruptible(&info->event_wait_q); - if (info->flags & ASYNC_CHECK_CD) { + if (info->port.flags & ASYNC_CHECK_CD) { if (debug_level >= DEBUG_LEVEL_ISR) printk("%s CD now %s...", info->device_name, (info->serial_signals & SerialSignal_DCD) ? "on" : "off"); if (info->serial_signals & SerialSignal_DCD) - wake_up_interruptible(&info->open_wait); + wake_up_interruptible(&info->port.open_wait); else { if (debug_level >= DEBUG_LEVEL_ISR) printk("doing serial hangup..."); - if (info->tty) - tty_hangup(info->tty); + if (tty) + tty_hangup(tty); } } info->pending_bh |= BH_STATUS; @@ -1261,32 +1148,32 @@ 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 - * regs interrupted processor context */ -static irqreturn_t mgslpc_isr(int irq, void *dev_id, struct pt_regs * regs) +static irqreturn_t mgslpc_isr(int dummy, void *dev_id) { - MGSLPC_INFO * info = (MGSLPC_INFO *)dev_id; + MGSLPC_INFO *info = dev_id; + struct tty_struct *tty; unsigned short isr; unsigned char gis, pis; int count=0; - if (debug_level >= DEBUG_LEVEL_ISR) - printk("mgslpc_isr(%d) entry.\n", irq); - if (!info) - return IRQ_NONE; - - if (!(info->link.state & DEV_CONFIG)) + if (debug_level >= DEBUG_LEVEL_ISR) + printk("mgslpc_isr(%d) entry.\n", info->irq_level); + + if (!(info->p_dev->_locked)) return IRQ_HANDLED; + tty = tty_port_tty_get(&info->port); + spin_lock(&info->lock); while ((gis = read_reg(info, CHA + GIS))) { - if (debug_level >= DEBUG_LEVEL_ISR) + if (debug_level >= DEBUG_LEVEL_ISR) printk("mgslpc_isr %s gis=%04X\n", info->device_name,gis); if ((gis & 0x70) || count > 1000) { @@ -1295,55 +1182,55 @@ static irqreturn_t mgslpc_isr(int irq, void *dev_id, struct pt_regs * regs) } count++; - if (gis & (BIT1 + BIT0)) { + if (gis & (BIT1 | BIT0)) { isr = read_reg16(info, CHB + ISR); if (isr & IRQ_DCD) - dcd_change(info); + dcd_change(info, tty); if (isr & IRQ_CTS) - cts_change(info); + cts_change(info, tty); } - if (gis & (BIT3 + BIT2)) + if (gis & (BIT3 | BIT2)) { isr = read_reg16(info, CHA + ISR); if (isr & IRQ_TIMER) { - info->irq_occurred = 1; + info->irq_occurred = true; irq_disable(info, CHA, IRQ_TIMER); } - /* receive IRQs */ + /* receive IRQs */ if (isr & IRQ_EXITHUNT) { info->icount.exithunt++; wake_up_interruptible(&info->event_wait_q); } if (isr & IRQ_BREAK_ON) { info->icount.brk++; - if (info->flags & ASYNC_SAK) - do_SAK(info->tty); + if (info->port.flags & ASYNC_SAK) + do_SAK(tty); } if (isr & IRQ_RXTIME) { issue_command(info, CHA, CMD_RXFIFO_READ); } - if (isr & (IRQ_RXEOM + IRQ_RXFIFO)) { + if (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++; else info->icount.txunder++; - tx_done(info); + tx_done(info, tty); } else if (isr & IRQ_ALLSENT) { info->icount.txok++; - tx_done(info); + tx_done(info, tty); } else if (isr & IRQ_TXFIFO) - tx_ready(info); + tx_ready(info, tty); } if (gis & BIT7) { pis = read_reg(info, CHA + PIS); @@ -1353,148 +1240,147 @@ static irqreturn_t mgslpc_isr(int irq, void *dev_id, struct pt_regs * regs) 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); - info->bh_requested = 1; + info->bh_requested = true; } spin_unlock(&info->lock); - - if (debug_level >= DEBUG_LEVEL_ISR) + tty_kref_put(tty); + + 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; } /* Initialize and start device. */ -static int startup(MGSLPC_INFO * info) +static int startup(MGSLPC_INFO * info, struct tty_struct *tty) { int retval = 0; - + if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):startup(%s)\n",__FILE__,__LINE__,info->device_name); - - if (info->flags & ASYNC_INITIALIZED) + printk("%s(%d):startup(%s)\n", __FILE__, __LINE__, info->device_name); + + if (info->port.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); if (!info->tx_buf) { printk(KERN_ERR"%s(%d):%s can't allocate transmit buffer\n", - __FILE__,__LINE__,info->device_name); + __FILE__, __LINE__, info->device_name); return -ENOMEM; } } info->pending_bh = 0; - + memset(&info->icount, 0, sizeof(info->icount)); - init_timer(&info->tx_timer); - info->tx_timer.data = (unsigned long)info; - info->tx_timer.function = tx_timeout; + 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 ) + + /* perform existence 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); + + if (retval) { + if (capable(CAP_SYS_ADMIN) && tty) + set_bit(TTY_IO_ERROR, &tty->flags); release_resources(info); - return retval; - } + return retval; + } /* program hardware for current parameters */ - mgslpc_change_params(info); - - if (info->tty) - clear_bit(TTY_IO_ERROR, &info->tty->flags); + mgslpc_change_params(info, tty); + + if (tty) + clear_bit(TTY_IO_ERROR, &tty->flags); + + info->port.flags |= ASYNC_INITIALIZED; - info->flags |= ASYNC_INITIALIZED; - return 0; } /* Called by mgslpc_close() and mgslpc_hangup() to shutdown hardware */ -static void shutdown(MGSLPC_INFO * info) +static void shutdown(MGSLPC_INFO * info, struct tty_struct *tty) { unsigned long flags; - - if (!(info->flags & ASYNC_INITIALIZED)) + + if (!(info->port.flags & ASYNC_INITIALIZED)) return; if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):mgslpc_shutdown(%s)\n", - __FILE__,__LINE__, info->device_name ); + __FILE__, __LINE__, info->device_name); /* clear status wait queue because status changes */ /* can't happen after shutting down the hardware */ wake_up_interruptible(&info->status_event_wait_q); wake_up_interruptible(&info->event_wait_q); - del_timer(&info->tx_timer); + del_timer_sync(&info->tx_timer); if (info->tx_buf) { free_page((unsigned long) info->tx_buf); info->tx_buf = NULL; } - spin_lock_irqsave(&info->lock,flags); + spin_lock_irqsave(&info->lock, flags); rx_stop(info); tx_stop(info); /* TODO:disable interrupts instead of reset to preserve signal states */ reset_device(info); - - if (!info->tty || info->tty->termios->c_cflag & HUPCL) { - info->serial_signals &= ~(SerialSignal_DTR + SerialSignal_RTS); + + if (!tty || tty->termios.c_cflag & HUPCL) { + info->serial_signals &= ~(SerialSignal_RTS | SerialSignal_DTR); set_signals(info); } - - spin_unlock_irqrestore(&info->lock,flags); - release_resources(info); - - if (info->tty) - set_bit(TTY_IO_ERROR, &info->tty->flags); + spin_unlock_irqrestore(&info->lock, flags); + + release_resources(info); - info->flags &= ~ASYNC_INITIALIZED; + if (tty) + set_bit(TTY_IO_ERROR, &tty->flags); + + info->port.flags &= ~ASYNC_INITIALIZED; } -static void mgslpc_program_hw(MGSLPC_INFO *info) +static void mgslpc_program_hw(MGSLPC_INFO *info, struct tty_struct *tty) { unsigned long flags; - spin_lock_irqsave(&info->lock,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; @@ -1503,38 +1389,38 @@ 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) + + if (info->netcount || (tty && (tty->termios.c_cflag & CREAD))) rx_start(info); - - spin_unlock_irqrestore(&info->lock,flags); + + spin_unlock_irqrestore(&info->lock, flags); } /* Reconfigure adapter based on new parameters */ -static void mgslpc_change_params(MGSLPC_INFO *info) +static void mgslpc_change_params(MGSLPC_INFO *info, struct tty_struct *tty) { unsigned cflag; int bits_per_char; - if (!info->tty || !info->tty->termios) + if (!tty) 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 */ - /* otherwise assert DTR and RTS */ - if (cflag & CBAUD) - info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; + __FILE__, __LINE__, info->device_name); + + cflag = tty->termios.c_cflag; + + /* if B0 rate (hangup) specified then negate RTS and DTR */ + /* otherwise assert RTS and DTR */ + if (cflag & CBAUD) + info->serial_signals |= SerialSignal_RTS | SerialSignal_DTR; else - info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR); - + 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; @@ -1542,7 +1428,7 @@ 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 @@ -1563,7 +1449,7 @@ 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 @@ -1571,56 +1457,56 @@ static void mgslpc_change_params(MGSLPC_INFO *info) * current data rate. */ if (info->params.data_rate <= 460800) { - info->params.data_rate = tty_get_baud_rate(info->tty); + info->params.data_rate = tty_get_baud_rate(tty); } - - if ( info->params.data_rate ) { - info->timeout = (32*HZ*bits_per_char) / + + if (info->params.data_rate) { + info->timeout = (32*HZ*bits_per_char) / info->params.data_rate; } info->timeout += HZ/50; /* Add .02 seconds of slop */ if (cflag & CRTSCTS) - info->flags |= ASYNC_CTS_FLOW; + info->port.flags |= ASYNC_CTS_FLOW; else - info->flags &= ~ASYNC_CTS_FLOW; - + info->port.flags &= ~ASYNC_CTS_FLOW; + if (cflag & CLOCAL) - info->flags &= ~ASYNC_CHECK_CD; + info->port.flags &= ~ASYNC_CHECK_CD; else - info->flags |= ASYNC_CHECK_CD; + info->port.flags |= ASYNC_CHECK_CD; /* process tty input control flags */ - + info->read_status_mask = 0; - if (I_INPCK(info->tty)) + if (I_INPCK(tty)) info->read_status_mask |= BIT7 | BIT6; - if (I_IGNPAR(info->tty)) + if (I_IGNPAR(tty)) info->ignore_status_mask |= BIT7 | BIT6; - mgslpc_program_hw(info); + mgslpc_program_hw(info, tty); } /* Add a character to the transmit buffer */ -static void mgslpc_put_char(struct tty_struct *tty, unsigned char ch) +static int mgslpc_put_char(struct tty_struct *tty, unsigned char ch) { MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; unsigned long flags; if (debug_level >= DEBUG_LEVEL_INFO) { - printk( "%s(%d):mgslpc_put_char(%d) on %s\n", - __FILE__,__LINE__,ch,info->device_name); + printk("%s(%d):mgslpc_put_char(%d) on %s\n", + __FILE__, __LINE__, ch, info->device_name); } if (mgslpc_paranoia_check(info, tty->name, "mgslpc_put_char")) - return; + return 0; - if (!tty || !info->tx_buf) - return; + if (!info->tx_buf) + return 0; + + spin_lock_irqsave(&info->lock, flags); - 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; @@ -1628,8 +1514,9 @@ static void mgslpc_put_char(struct tty_struct *tty, unsigned char ch) info->tx_count++; } } - - spin_unlock_irqrestore(&info->lock,flags); + + spin_unlock_irqrestore(&info->lock, flags); + return 1; } /* Enable transmitter so remaining characters in the @@ -1639,11 +1526,11 @@ 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); - + 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; @@ -1652,23 +1539,23 @@ static void mgslpc_flush_chars(struct tty_struct *tty) return; if (debug_level >= DEBUG_LEVEL_INFO) - printk( "%s(%d):mgslpc_flush_chars() entry on %s starting transmitter\n", - __FILE__,__LINE__,info->device_name); + printk("%s(%d):mgslpc_flush_chars() entry on %s starting transmitter\n", + __FILE__, __LINE__, info->device_name); - spin_lock_irqsave(&info->lock,flags); + spin_lock_irqsave(&info->lock, flags); if (!info->tx_active) - tx_start(info); - spin_unlock_irqrestore(&info->lock,flags); + tx_start(info, tty); + spin_unlock_irqrestore(&info->lock, flags); } /* Send a block of data - * + * * Arguments: - * + * * tty pointer to tty information structure * buf pointer to buffer containing send data * count size of send data in bytes - * + * * Returns: number of characters written */ static int mgslpc_write(struct tty_struct * tty, @@ -1677,13 +1564,13 @@ 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); - + printk("%s(%d):mgslpc_write(%s) count=%d\n", + __FILE__, __LINE__, info->device_name, count); + if (mgslpc_paranoia_check(info, tty->name, "mgslpc_write") || - !tty || !info->tx_buf) + !info->tx_buf) goto cleanup; if (info->params.mode == MGSL_MODE_HDLC) { @@ -1703,29 +1590,29 @@ 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); + spin_lock_irqsave(&info->lock, flags); info->tx_put = (info->tx_put + c) & (TXBUFSIZE-1); info->tx_count += c; - spin_unlock_irqrestore(&info->lock,flags); + spin_unlock_irqrestore(&info->lock, flags); buf += c; count -= c; ret += c; } start: - if (info->tx_count && !tty->stopped && !tty->hw_stopped) { - spin_lock_irqsave(&info->lock,flags); + if (info->tx_count && !tty->stopped && !tty->hw_stopped) { + spin_lock_irqsave(&info->lock, flags); if (!info->tx_active) - tx_start(info); - spin_unlock_irqrestore(&info->lock,flags); - } -cleanup: + tx_start(info, tty); + spin_unlock_irqrestore(&info->lock, flags); + } +cleanup: if (debug_level >= DEBUG_LEVEL_INFO) - printk( "%s(%d):mgslpc_write(%s) returning=%d\n", - __FILE__,__LINE__,info->device_name,ret); + printk("%s(%d):mgslpc_write(%s) returning=%d\n", + __FILE__, __LINE__, info->device_name, ret); return ret; } @@ -1735,7 +1622,7 @@ 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; @@ -1750,10 +1637,10 @@ 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); + __FILE__, __LINE__, info->device_name, ret); return ret; } @@ -1763,14 +1650,14 @@ 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 ); - + __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 @@ -1778,8 +1665,8 @@ 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); - + __FILE__, __LINE__, info->device_name, rc); + return rc; } @@ -1789,18 +1676,18 @@ 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 ); - + __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); - spin_unlock_irqrestore(&info->lock,flags); + del_timer(&info->tx_timer); + spin_unlock_irqrestore(&info->lock, flags); wake_up_interruptible(&tty->write_wait); tty_wakeup(tty); @@ -1815,17 +1702,17 @@ 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 ); - + __FILE__, __LINE__, info->device_name, ch); + if (mgslpc_paranoia_check(info, tty->name, "mgslpc_send_xchar")) return; info->x_char = ch; if (ch) { - spin_lock_irqsave(&info->lock,flags); + spin_lock_irqsave(&info->lock, flags); if (!info->tx_enabled) - tx_start(info); - spin_unlock_irqrestore(&info->lock,flags); + tx_start(info, tty); + spin_unlock_irqrestore(&info->lock, flags); } } @@ -1835,22 +1722,22 @@ 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 ); + __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); + + if (tty->termios.c_cflag & CRTSCTS) { + spin_lock_irqsave(&info->lock, flags); info->serial_signals &= ~SerialSignal_RTS; - set_signals(info); - spin_unlock_irqrestore(&info->lock,flags); + set_signals(info); + spin_unlock_irqrestore(&info->lock, flags); } } @@ -1860,26 +1747,26 @@ 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 ); + __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); + + if (tty->termios.c_cflag & CRTSCTS) { + spin_lock_irqsave(&info->lock, flags); info->serial_signals |= SerialSignal_RTS; - set_signals(info); - spin_unlock_irqrestore(&info->lock,flags); + set_signals(info); + spin_unlock_irqrestore(&info->lock, flags); } } @@ -1914,37 +1801,37 @@ 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 + * + * info pointer to device instance data + * new_params user buffer containing new serial params * * Returns: 0 if success, otherwise error code */ -static int set_params(MGSLPC_INFO * info, MGSL_PARAMS __user *new_params) +static int set_params(MGSLPC_INFO * info, MGSL_PARAMS __user *new_params, struct tty_struct *tty) { - unsigned long flags; + 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 ); + info->device_name); COPY_FROM_USER(err,&tmp_params, new_params, sizeof(MGSL_PARAMS)); if (err) { - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):set_params(%s) user buffer copy failed\n", - __FILE__,__LINE__,info->device_name); + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):set_params(%s) user buffer copy failed\n", + __FILE__, __LINE__, info->device_name); return -EFAULT; } - - spin_lock_irqsave(&info->lock,flags); + + spin_lock_irqsave(&info->lock, flags); memcpy(&info->params,&tmp_params,sizeof(MGSL_PARAMS)); - spin_unlock_irqrestore(&info->lock,flags); - - mgslpc_change_params(info); - + spin_unlock_irqrestore(&info->lock, flags); + + mgslpc_change_params(info, tty); + return 0; } @@ -1961,13 +1848,13 @@ static int get_txidle(MGSLPC_INFO * info, int __user *idle_mode) static int set_txidle(MGSLPC_INFO * info, int idle_mode) { - unsigned long flags; + unsigned long flags; if (debug_level >= DEBUG_LEVEL_INFO) printk("set_txidle(%s,%d)\n", info->device_name, idle_mode); - spin_lock_irqsave(&info->lock,flags); + spin_lock_irqsave(&info->lock, flags); info->idle_mode = idle_mode; tx_set_idle(info); - spin_unlock_irqrestore(&info->lock,flags); + spin_unlock_irqrestore(&info->lock, flags); return 0; } @@ -1984,11 +1871,11 @@ static int get_interface(MGSLPC_INFO * info, int __user *if_mode) static int set_interface(MGSLPC_INFO * info, int if_mode) { - unsigned long flags; + unsigned long flags; unsigned char val; if (debug_level >= DEBUG_LEVEL_INFO) printk("set_interface(%s,%d)\n", info->device_name, if_mode); - spin_lock_irqsave(&info->lock,flags); + spin_lock_irqsave(&info->lock, flags); info->if_mode = if_mode; val = read_reg(info, PVR) & 0x0f; @@ -2000,57 +1887,57 @@ static int set_interface(MGSLPC_INFO * info, int if_mode) } write_reg(info, PVR, val); - spin_unlock_irqrestore(&info->lock,flags); + spin_unlock_irqrestore(&info->lock, flags); return 0; } -static int set_txenable(MGSLPC_INFO * info, int enable) +static int set_txenable(MGSLPC_INFO * info, int enable, struct tty_struct *tty) { - unsigned long flags; - + 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); + + spin_lock_irqsave(&info->lock, flags); if (enable) { if (!info->tx_enabled) - tx_start(info); + tx_start(info, tty); } else { if (info->tx_enabled) tx_stop(info); } - spin_unlock_irqrestore(&info->lock,flags); + spin_unlock_irqrestore(&info->lock, flags); return 0; } static int tx_abort(MGSLPC_INFO * info) { - unsigned long flags; - + unsigned long flags; + if (debug_level >= DEBUG_LEVEL_INFO) printk("tx_abort(%s)\n", info->device_name); - - spin_lock_irqsave(&info->lock,flags); + + spin_lock_irqsave(&info->lock, flags); if (info->tx_active && info->tx_count && info->params.mode == MGSL_MODE_HDLC) { /* clear data count so FIFO is not filled on next IRQ. * This results in underrun and abort transmission. */ info->tx_count = info->tx_put = info->tx_get = 0; - info->tx_aborting = TRUE; + info->tx_aborting = true; } - spin_unlock_irqrestore(&info->lock,flags); + spin_unlock_irqrestore(&info->lock, flags); return 0; } static int set_rxenable(MGSLPC_INFO * info, int enable) { - unsigned long flags; - + 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); + + spin_lock_irqsave(&info->lock, flags); if (enable) { if (!info->rx_enabled) rx_start(info); @@ -2058,21 +1945,21 @@ static int set_rxenable(MGSLPC_INFO * info, int enable) if (info->rx_enabled) rx_stop(info); } - spin_unlock_irqrestore(&info->lock,flags); + spin_unlock_irqrestore(&info->lock, flags); return 0; } /* wait for specified event to occur - * - * Arguments: info pointer to device instance data - * mask pointer to bitmask of events to wait for - * Return Value: 0 if successful and bit mask updated with + * + * Arguments: info pointer to device instance data + * mask pointer to bitmask of events to wait for + * Return Value: 0 if successful and bit mask updated with * of events triggerred, - * otherwise error code + * otherwise error code */ static int wait_events(MGSLPC_INFO * info, int __user *mask_ptr) { - unsigned long flags; + unsigned long flags; int s; int rc=0; struct mgsl_icount cprev, cnow; @@ -2084,52 +1971,52 @@ 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); - spin_lock_irqsave(&info->lock,flags); + spin_lock_irqsave(&info->lock, flags); /* return immediately if state matches requested events */ get_signals(info); s = info->serial_signals; events = mask & ( ((s & SerialSignal_DSR) ? MgslEvent_DsrActive:MgslEvent_DsrInactive) + - ((s & SerialSignal_DCD) ? MgslEvent_DcdActive:MgslEvent_DcdInactive) + + ((s & SerialSignal_DCD) ? MgslEvent_DcdActive:MgslEvent_DcdInactive) + ((s & SerialSignal_CTS) ? MgslEvent_CtsActive:MgslEvent_CtsInactive) + ((s & SerialSignal_RI) ? MgslEvent_RiActive :MgslEvent_RiInactive) ); if (events) { - spin_unlock_irqrestore(&info->lock,flags); + spin_unlock_irqrestore(&info->lock, flags); goto exit; } /* save current irq counts */ cprev = info->icount; oldsigs = info->input_signal_events; - + if ((info->params.mode == MGSL_MODE_HDLC) && (mask & MgslEvent_ExitHuntMode)) irq_enable(info, CHA, IRQ_EXITHUNT); - + set_current_state(TASK_INTERRUPTIBLE); add_wait_queue(&info->event_wait_q, &wait); - - spin_unlock_irqrestore(&info->lock,flags); - - + + 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); + spin_lock_irqsave(&info->lock, flags); cnow = info->icount; newsigs = info->input_signal_events; set_current_state(TASK_INTERRUPTIBLE); - spin_unlock_irqrestore(&info->lock,flags); + spin_unlock_irqrestore(&info->lock, flags); /* if no change, wait aborted for some reason */ if (newsigs.dsr_up == oldsigs.dsr_up && @@ -2159,19 +2046,19 @@ 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); if (mask & MgslEvent_ExitHuntMode) { - spin_lock_irqsave(&info->lock,flags); + spin_lock_irqsave(&info->lock, flags); if (!waitqueue_active(&info->event_wait_q)) irq_disable(info, CHA, IRQ_EXITHUNT); - spin_unlock_irqrestore(&info->lock,flags); + spin_unlock_irqrestore(&info->lock, flags); } exit: if (rc == 0) @@ -2181,17 +2068,17 @@ exit: static int modem_input_wait(MGSLPC_INFO *info,int arg) { - unsigned long flags; + unsigned long flags; int rc; struct mgsl_icount cprev, cnow; DECLARE_WAITQUEUE(wait, current); /* save current irq counts */ - spin_lock_irqsave(&info->lock,flags); + spin_lock_irqsave(&info->lock, flags); cprev = info->icount; add_wait_queue(&info->status_event_wait_q, &wait); set_current_state(TASK_INTERRUPTIBLE); - spin_unlock_irqrestore(&info->lock,flags); + spin_unlock_irqrestore(&info->lock, flags); for(;;) { schedule(); @@ -2201,10 +2088,10 @@ static int modem_input_wait(MGSLPC_INFO *info,int arg) } /* get new irq counts */ - spin_lock_irqsave(&info->lock,flags); + spin_lock_irqsave(&info->lock, flags); cnow = info->icount; set_current_state(TASK_INTERRUPTIBLE); - spin_unlock_irqrestore(&info->lock,flags); + spin_unlock_irqrestore(&info->lock, flags); /* if no change, wait aborted for some reason */ if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && @@ -2231,15 +2118,15 @@ static int modem_input_wait(MGSLPC_INFO *info,int arg) /* return the state of the serial control and status signals */ -static int tiocmget(struct tty_struct *tty, struct file *file) +static int tiocmget(struct tty_struct *tty) { MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; unsigned int result; - unsigned long flags; + unsigned long flags; - spin_lock_irqsave(&info->lock,flags); - get_signals(info); - spin_unlock_irqrestore(&info->lock,flags); + spin_lock_irqsave(&info->lock, flags); + get_signals(info); + spin_unlock_irqrestore(&info->lock, flags); result = ((info->serial_signals & SerialSignal_RTS) ? TIOCM_RTS:0) + ((info->serial_signals & SerialSignal_DTR) ? TIOCM_DTR:0) + @@ -2250,21 +2137,21 @@ static int tiocmget(struct tty_struct *tty, struct file *file) if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):%s tiocmget() value=%08X\n", - __FILE__,__LINE__, info->device_name, result ); + __FILE__, __LINE__, info->device_name, result); return result; } /* set modem control signals (DTR/RTS) */ -static int tiocmset(struct tty_struct *tty, struct file *file, +static int tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; - unsigned long flags; + unsigned long flags; if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):%s tiocmset(%x,%x)\n", - __FILE__,__LINE__,info->device_name, set, clear); + __FILE__, __LINE__, info->device_name, set, clear); if (set & TIOCM_RTS) info->serial_signals |= SerialSignal_RTS; @@ -2275,9 +2162,9 @@ static int tiocmset(struct tty_struct *tty, struct file *file, if (clear & TIOCM_DTR) info->serial_signals &= ~SerialSignal_DTR; - spin_lock_irqsave(&info->lock,flags); - set_signals(info); - spin_unlock_irqrestore(&info->lock,flags); + spin_lock_irqsave(&info->lock, flags); + set_signals(info); + spin_unlock_irqrestore(&info->lock, flags); return 0; } @@ -2287,71 +2174,87 @@ static int tiocmset(struct tty_struct *tty, struct file *file, * Arguments: tty pointer to tty instance data * break_state -1=set break condition, 0=clear */ -static void mgslpc_break(struct tty_struct *tty, int break_state) +static int mgslpc_break(struct tty_struct *tty, int break_state) { MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; unsigned long flags; - + if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):mgslpc_break(%s,%d)\n", - __FILE__,__LINE__, info->device_name, break_state); - + __FILE__, __LINE__, info->device_name, break_state); + if (mgslpc_paranoia_check(info, tty->name, "mgslpc_break")) - return; + return -EINVAL; - spin_lock_irqsave(&info->lock,flags); - if (break_state == -1) + 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); + spin_unlock_irqrestore(&info->lock, flags); + return 0; +} + +static int mgslpc_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; + struct mgsl_icount cnow; /* kernel counter temps */ + unsigned long flags; + + spin_lock_irqsave(&info->lock, flags); + cnow = info->icount; + spin_unlock_irqrestore(&info->lock, flags); + + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; + + return 0; } /* Service an IOCTL request - * + * * Arguments: - * - * tty pointer to tty instance data - * file pointer to associated file object for device - * cmd IOCTL command code - * arg command argument/context - * + * + * tty pointer to tty instance data + * cmd IOCTL command code + * arg command argument/context + * * Return Value: 0 if success, otherwise error code */ -static int mgslpc_ioctl(struct tty_struct *tty, struct file * file, +static int mgslpc_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; - + void __user *argp = (void __user *)arg; + if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgslpc_ioctl %s cmd=%08X\n", __FILE__,__LINE__, - info->device_name, cmd ); - + printk("%s(%d):mgslpc_ioctl %s cmd=%08X\n", __FILE__, __LINE__, + info->device_name, cmd); + if (mgslpc_paranoia_check(info, tty->name, "mgslpc_ioctl")) return -ENODEV; if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && - (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) { + (cmd != TIOCMIWAIT)) { if (tty->flags & (1 << TTY_IO_ERROR)) return -EIO; } - return ioctl_common(info, cmd, arg); -} - -int ioctl_common(MGSLPC_INFO *info, unsigned int cmd, unsigned long arg) -{ - int error; - struct mgsl_icount cnow; /* kernel counter temps */ - 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); case MGSL_IOCSPARAMS: - return set_params(info, argp); + return set_params(info, argp, tty); case MGSL_IOCGTXIDLE: return get_txidle(info, argp); case MGSL_IOCSTXIDLE: @@ -2361,7 +2264,7 @@ int ioctl_common(MGSLPC_INFO *info, unsigned int cmd, unsigned long arg) case MGSL_IOCSIF: return set_interface(info,(int)arg); case MGSL_IOCTXENABLE: - return set_txenable(info,(int)arg); + return set_txenable(info,(int)arg, tty); case MGSL_IOCRXENABLE: return set_rxenable(info,(int)arg); case MGSL_IOCTXABORT: @@ -2372,34 +2275,6 @@ int ioctl_common(MGSLPC_INFO *info, unsigned int cmd, unsigned long arg) return wait_events(info, argp); case TIOCMIWAIT: return modem_input_wait(info,(int)arg); - case TIOCGICOUNT: - spin_lock_irqsave(&info->lock,flags); - cnow = info->icount; - spin_unlock_irqrestore(&info->lock,flags); - p_cuser = argp; - PUT_USER(error,cnow.cts, &p_cuser->cts); - if (error) return error; - PUT_USER(error,cnow.dsr, &p_cuser->dsr); - if (error) return error; - PUT_USER(error,cnow.rng, &p_cuser->rng); - if (error) return error; - PUT_USER(error,cnow.dcd, &p_cuser->dcd); - if (error) return error; - PUT_USER(error,cnow.rx, &p_cuser->rx); - if (error) return error; - PUT_USER(error,cnow.tx, &p_cuser->tx); - if (error) return error; - PUT_USER(error,cnow.frame, &p_cuser->frame); - if (error) return error; - PUT_USER(error,cnow.overrun, &p_cuser->overrun); - if (error) return error; - PUT_USER(error,cnow.parity, &p_cuser->parity); - if (error) return error; - PUT_USER(error,cnow.brk, &p_cuser->brk); - if (error) return error; - PUT_USER(error,cnow.buf_overrun, &p_cuser->buf_overrun); - if (error) return error; - return 0; default: return -ENOIOCTLCMD; } @@ -2407,54 +2282,54 @@ 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 + * + * tty pointer to tty structure + * termios pointer to buffer to hold returned old termios */ -static void mgslpc_set_termios(struct tty_struct *tty, struct termios *old_termios) +static void mgslpc_set_termios(struct tty_struct *tty, struct ktermios *old_termios) { MGSLPC_INFO *info = (MGSLPC_INFO *)tty->driver_data; unsigned long flags; - + if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgslpc_set_termios %s\n", __FILE__,__LINE__, - tty->driver->name ); - + 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) + if ((tty->termios.c_cflag == old_termios->c_cflag) + && (RELEVANT_IFLAG(tty->termios.c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) return; - mgslpc_change_params(info); + mgslpc_change_params(info, tty); /* Handle transition to B0 status */ if (old_termios->c_cflag & CBAUD && - !(tty->termios->c_cflag & CBAUD)) { - info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR); - spin_lock_irqsave(&info->lock,flags); - set_signals(info); - spin_unlock_irqrestore(&info->lock,flags); + !(tty->termios.c_cflag & CBAUD)) { + info->serial_signals &= ~(SerialSignal_RTS | SerialSignal_DTR); + spin_lock_irqsave(&info->lock, flags); + set_signals(info); + spin_unlock_irqrestore(&info->lock, flags); } - + /* Handle transition away from B0 status */ if (!(old_termios->c_cflag & CBAUD) && - tty->termios->c_cflag & CBAUD) { + tty->termios.c_cflag & CBAUD) { info->serial_signals |= SerialSignal_DTR; - if (!(tty->termios->c_cflag & CRTSCTS) || - !test_bit(TTY_THROTTLED, &tty->flags)) { + if (!(tty->termios.c_cflag & CRTSCTS) || + !test_bit(TTY_THROTTLED, &tty->flags)) { info->serial_signals |= SerialSignal_RTS; - } - spin_lock_irqsave(&info->lock,flags); - set_signals(info); - spin_unlock_irqrestore(&info->lock,flags); + } + spin_lock_irqsave(&info->lock, flags); + set_signals(info); + spin_unlock_irqrestore(&info->lock, flags); } - + /* Handle turning off CRTSCTS */ if (old_termios->c_cflag & CRTSCTS && - !(tty->termios->c_cflag & CRTSCTS)) { + !(tty->termios.c_cflag & CRTSCTS)) { tty->hw_stopped = 0; tx_release(tty); } @@ -2463,82 +2338,34 @@ static void mgslpc_set_termios(struct tty_struct *tty, struct termios *old_termi static void mgslpc_close(struct tty_struct *tty, struct file * filp) { MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; + struct tty_port *port = &info->port; if (mgslpc_paranoia_check(info, tty->name, "mgslpc_close")) return; - + if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):mgslpc_close(%s) entry, count=%d\n", - __FILE__,__LINE__, info->device_name, info->count); - - if (!info->count) - return; + __FILE__, __LINE__, info->device_name, port->count); - 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. - * info->count should be one in this case. - * if it's not, correct it so that the port is shutdown. - */ - printk("mgslpc_close: bad refcount; tty->count is 1, " - "info->count is %d\n", info->count); - info->count = 1; - } - - info->count--; - - /* if at least one open remaining, leave hardware active */ - if (info->count) + WARN_ON(!port->count); + + if (tty_port_close_start(port, tty, filp) == 0) goto cleanup; - - info->flags |= ASYNC_CLOSING; - - /* 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); - if (tty->driver->flush_buffer) - tty->driver->flush_buffer(tty); + if (port->flags & ASYNC_INITIALIZED) + mgslpc_wait_until_sent(tty, info->timeout); - 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); + mgslpc_flush_buffer(tty); + + tty_ldisc_flush(tty); + shutdown(info, tty); -cleanup: + tty_port_close_end(port, tty); + tty_port_tty_set(port, NULL); +cleanup: if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s(%d):mgslpc_close(%s) exit, count=%d\n", __FILE__,__LINE__, - tty->driver->name, info->count); + printk("%s(%d):mgslpc_close(%s) exit, count=%d\n", __FILE__, __LINE__, + tty->driver->name, port->count); } /* Wait until the transmitter is empty. @@ -2548,37 +2375,37 @@ static void mgslpc_wait_until_sent(struct tty_struct *tty, int timeout) MGSLPC_INFO * info = (MGSLPC_INFO *)tty->driver_data; unsigned long orig_jiffies, char_time; - if (!info ) + if (!info) return; if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):mgslpc_wait_until_sent(%s) entry\n", - __FILE__,__LINE__, info->device_name ); - + __FILE__, __LINE__, info->device_name); + if (mgslpc_paranoia_check(info, tty->name, "mgslpc_wait_until_sent")) return; - if (!(info->flags & ASYNC_INITIALIZED)) + if (!(info->port.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 (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)); @@ -2597,11 +2424,11 @@ 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", - __FILE__,__LINE__, info->device_name ); + __FILE__, __LINE__, info->device_name); } /* Called by tty_hangup() when a hangup is signaled. @@ -2610,136 +2437,60 @@ 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 ); - + __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->flags &= ~ASYNC_NORMAL_ACTIVE; - info->tty = NULL; - - wake_up_interruptible(&info->open_wait); + shutdown(info, tty); + tty_port_hangup(&info->port); } -/* Block the current process until the specified port - * is ready to be opened. - */ -static int block_til_ready(struct tty_struct *tty, struct file *filp, - MGSLPC_INFO *info) +static int carrier_raised(struct tty_port *port) { - DECLARE_WAITQUEUE(wait, current); - 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 ); + MGSLPC_INFO *info = container_of(port, MGSLPC_INFO, port); + unsigned long flags; - if (filp->f_flags & O_NONBLOCK || tty->flags & (1 << TTY_IO_ERROR)){ - /* nonblock mode is set or port is not enabled */ - /* just verify that callout device is not active */ - info->flags |= ASYNC_NORMAL_ACTIVE; - return 0; - } + spin_lock_irqsave(&info->lock, flags); + get_signals(info); + spin_unlock_irqrestore(&info->lock, flags); - if (tty->termios->c_cflag & CLOCAL) - do_clocal = 1; + if (info->serial_signals & SerialSignal_DCD) + return 1; + return 0; +} - /* Wait for carrier detect and the line to become - * free (i.e., not in use by the callout). While we are in - * this loop, info->count is dropped by one, so that - * 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 ); +static void dtr_rts(struct tty_port *port, int onoff) +{ + MGSLPC_INFO *info = container_of(port, MGSLPC_INFO, port); + unsigned long flags; spin_lock_irqsave(&info->lock, flags); - if (!tty_hung_up_p(filp)) { - extra_count = 1; - info->count--; - } + if (onoff) + info->serial_signals |= SerialSignal_RTS | SerialSignal_DTR; + else + info->serial_signals &= ~(SerialSignal_RTS | SerialSignal_DTR); + set_signals(info); spin_unlock_irqrestore(&info->lock, flags); - info->blocked_open++; - - while (1) { - if ((tty->termios->c_cflag & CBAUD)) { - spin_lock_irqsave(&info->lock,flags); - info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; - 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; } + static int mgslpc_open(struct tty_struct *tty, struct file * filp) { MGSLPC_INFO *info; - int retval, line; - unsigned long flags; + struct tty_port *port; + 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)) { + if (line >= mgslpc_device_count) { printk("%s(%d):mgslpc_open with invalid line #%d.\n", - __FILE__,__LINE__,line); + __FILE__, __LINE__, line); return -ENODEV; } @@ -2749,24 +2500,25 @@ 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; - + + port = &info->port; tty->driver_data = info; - info->tty = tty; - + tty_port_tty_set(port, tty); + if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):mgslpc_open(%s), old ref count = %d\n", - __FILE__,__LINE__,tty->driver->name, info->count); + __FILE__, __LINE__, tty->driver->name, port->count); /* If port is closing, signal caller to try again */ - if (tty_hung_up_p(filp) || info->flags & ASYNC_CLOSING){ - if (info->flags & ASYNC_CLOSING) - interruptible_sleep_on(&info->close_wait); - retval = ((info->flags & ASYNC_HUP_NOTIFY) ? + if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING){ + wait_event_interruptible_tty(tty, port->close_wait, + !(port->flags & ASYNC_CLOSING)); + retval = ((port->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS); goto cleanup; } - - info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0; + + port->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0; spin_lock_irqsave(&info->netlock, flags); if (info->netcount) { @@ -2774,37 +2526,32 @@ static int mgslpc_open(struct tty_struct *tty, struct file * filp) spin_unlock_irqrestore(&info->netlock, flags); goto cleanup; } - info->count++; + spin_lock(&port->lock); + port->count++; + spin_unlock(&port->lock); spin_unlock_irqrestore(&info->netlock, flags); - if (info->count == 1) { + if (port->count == 1) { /* 1st open on this device, init hardware */ - retval = startup(info); + retval = startup(info, tty); if (retval < 0) goto cleanup; } - retval = block_til_ready(tty, filp, info); + retval = tty_port_block_til_ready(&info->port, tty, filp); if (retval) { if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):block_til_ready(%s) returned %d\n", - __FILE__,__LINE__, info->device_name, retval); + __FILE__, __LINE__, info->device_name, retval); goto cleanup; } if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):mgslpc_open(%s) success\n", - __FILE__,__LINE__, info->device_name); + __FILE__, __LINE__, info->device_name); retval = 0; - -cleanup: - if (retval) { - if (tty->count == 1) - info->tty = NULL; /* tty layer will release tty struct */ - if(info->count) - info->count--; - } - + +cleanup: return retval; } @@ -2812,20 +2559,19 @@ cleanup: * /proc fs routines.... */ -static inline int line_info(char *buf, MGSLPC_INFO *info) +static inline void line_info(struct seq_file *m, MGSLPC_INFO *info) { char stat_buf[30]; - int ret; unsigned long flags; - ret = sprintf(buf, "%s:io:%04X irq:%d", + seq_printf(m, "%s:io:%04X irq:%d", info->device_name, info->io_base, info->irq_level); /* output current serial signal states */ - spin_lock_irqsave(&info->lock,flags); - get_signals(info); - spin_unlock_irqrestore(&info->lock,flags); - + 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) @@ -2842,76 +2588,71 @@ static inline int line_info(char *buf, MGSLPC_INFO *info) strcat(stat_buf, "|RI"); if (info->params.mode == MGSL_MODE_HDLC) { - ret += sprintf(buf+ret, " HDLC txok:%d rxok:%d", + seq_printf(m, " HDLC txok:%d rxok:%d", info->icount.txok, info->icount.rxok); if (info->icount.txunder) - ret += sprintf(buf+ret, " txunder:%d", info->icount.txunder); + seq_printf(m, " txunder:%d", info->icount.txunder); if (info->icount.txabort) - ret += sprintf(buf+ret, " txabort:%d", info->icount.txabort); + seq_printf(m, " txabort:%d", info->icount.txabort); if (info->icount.rxshort) - ret += sprintf(buf+ret, " rxshort:%d", info->icount.rxshort); + seq_printf(m, " rxshort:%d", info->icount.rxshort); if (info->icount.rxlong) - ret += sprintf(buf+ret, " rxlong:%d", info->icount.rxlong); + seq_printf(m, " rxlong:%d", info->icount.rxlong); if (info->icount.rxover) - ret += sprintf(buf+ret, " rxover:%d", info->icount.rxover); + seq_printf(m, " rxover:%d", info->icount.rxover); if (info->icount.rxcrc) - ret += sprintf(buf+ret, " rxcrc:%d", info->icount.rxcrc); + seq_printf(m, " rxcrc:%d", info->icount.rxcrc); } else { - ret += sprintf(buf+ret, " ASYNC tx:%d rx:%d", + seq_printf(m, " ASYNC tx:%d rx:%d", info->icount.tx, info->icount.rx); if (info->icount.frame) - ret += sprintf(buf+ret, " fe:%d", info->icount.frame); + seq_printf(m, " fe:%d", info->icount.frame); if (info->icount.parity) - ret += sprintf(buf+ret, " pe:%d", info->icount.parity); + seq_printf(m, " pe:%d", info->icount.parity); if (info->icount.brk) - ret += sprintf(buf+ret, " brk:%d", info->icount.brk); + seq_printf(m, " brk:%d", info->icount.brk); if (info->icount.overrun) - ret += sprintf(buf+ret, " oe:%d", info->icount.overrun); + seq_printf(m, " 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", + seq_printf(m, " %s\n", stat_buf+1); + + seq_printf(m, "txactive=%d bh_req=%d bh_run=%d pending_bh=%x\n", info->tx_active,info->bh_requested,info->bh_running, info->pending_bh); - - return ret; } /* Called to print information about devices */ -static int mgslpc_read_proc(char *page, char **start, off_t off, int count, - int *eof, void *data) +static int mgslpc_proc_show(struct seq_file *m, void *v) { - int len = 0, l; - off_t begin = 0; MGSLPC_INFO *info; - - len += sprintf(page, "synclink driver:%s\n", driver_version); - + + seq_printf(m, "synclink driver:%s\n", driver_version); + info = mgslpc_device_list; - while( info ) { - l = line_info(page + len, info); - len += l; - if (len+begin > off+count) - goto done; - if (len+begin < off) { - begin += len; - len = 0; - } + while (info) { + line_info(m, info); info = info->next_device; } + return 0; +} - *eof = 1; -done: - if (off >= len+begin) - return 0; - *start = page + (off-begin); - return ((count < begin+len-off) ? count : begin+len-off); +static int mgslpc_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, mgslpc_proc_show, NULL); } -int rx_alloc_buffers(MGSLPC_INFO *info) +static const struct file_operations mgslpc_proc_fops = { + .owner = THIS_MODULE, + .open = mgslpc_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int rx_alloc_buffers(MGSLPC_INFO *info) { /* each buffer has header and data */ info->rx_buf_size = sizeof(RXBUF) + info->max_frame_size; @@ -2930,27 +2671,37 @@ int rx_alloc_buffers(MGSLPC_INFO *info) if (info->rx_buf == NULL) return -ENOMEM; + /* unused flag buffer to satisfy receive_buf calling interface */ + info->flag_buf = kzalloc(info->max_frame_size, GFP_KERNEL); + if (!info->flag_buf) { + kfree(info->rx_buf); + info->rx_buf = NULL; + return -ENOMEM; + } + rx_reset_buffers(info); return 0; } -void rx_free_buffers(MGSLPC_INFO *info) +static void rx_free_buffers(MGSLPC_INFO *info) { kfree(info->rx_buf); info->rx_buf = NULL; + kfree(info->flag_buf); + info->flag_buf = NULL; } -int claim_resources(MGSLPC_INFO *info) +static int claim_resources(MGSLPC_INFO *info) { - if (rx_alloc_buffers(info) < 0 ) { - printk( "Cant allocate rx buffer %s\n", info->device_name); + if (rx_alloc_buffers(info) < 0) { + printk("Can't allocate rx buffer %s\n", info->device_name); release_resources(info); return -ENODEV; - } + } return 0; } -void release_resources(MGSLPC_INFO *info) +static void release_resources(MGSLPC_INFO *info) { if (debug_level >= DEBUG_LEVEL_INFO) printk("release_resources(%s)\n", info->device_name); @@ -2959,46 +2710,71 @@ 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 */ -void mgslpc_add_device(MGSLPC_INFO *info) +static int mgslpc_add_device(MGSLPC_INFO *info) { + MGSLPC_INFO *current_dev = NULL; + struct device *tty_dev; + int ret; + info->next_device = NULL; info->line = mgslpc_device_count; sprintf(info->device_name,"ttySLP%d",info->line); - + if (info->line < MAX_DEVICE_COUNT) { if (maxframe[info->line]) info->max_frame_size = maxframe[info->line]; - info->dosyncppp = dosyncppp[info->line]; } mgslpc_device_count++; - + if (!mgslpc_device_list) mgslpc_device_list = info; - else { - MGSLPC_INFO *current_dev = mgslpc_device_list; - while( current_dev->next_device ) + else { + current_dev = mgslpc_device_list; + while (current_dev->next_device) current_dev = current_dev->next_device; current_dev->next_device = info; } - + if (info->max_frame_size < 4096) info->max_frame_size = 4096; else if (info->max_frame_size > 65535) info->max_frame_size = 65535; - - printk( "SyncLink PC Card %s:IO=%04X IRQ=%d\n", + + printk("SyncLink PC Card %s:IO=%04X IRQ=%d\n", info->device_name, info->io_base, info->irq_level); -#ifdef CONFIG_HDLC - hdlcdev_init(info); +#if SYNCLINK_GENERIC_HDLC + ret = hdlcdev_init(info); + if (ret != 0) + goto failed; #endif + + tty_dev = tty_port_register_device(&info->port, serial_driver, info->line, + &info->p_dev->dev); + if (IS_ERR(tty_dev)) { + ret = PTR_ERR(tty_dev); +#if SYNCLINK_GENERIC_HDLC + hdlcdev_exit(info); +#endif + goto failed; + } + + return 0; + +failed: + if (current_dev) + current_dev->next_device = NULL; + else + mgslpc_device_list = NULL; + mgslpc_device_count--; + return ret; } -void mgslpc_remove_device(MGSLPC_INFO *remove_info) +static void mgslpc_remove_device(MGSLPC_INFO *remove_info) { MGSLPC_INFO *info = mgslpc_device_list; MGSLPC_INFO *last = NULL; @@ -3009,10 +2785,12 @@ void mgslpc_remove_device(MGSLPC_INFO *remove_info) last->next_device = info->next_device; else mgslpc_device_list = info->next_device; -#ifdef CONFIG_HDLC + tty_unregister_device(serial_driver, info->line); +#if SYNCLINK_GENERIC_HDLC hdlcdev_exit(info); #endif release_resources(info); + tty_port_destroy(&info->port); kfree(info); mgslpc_device_count--; return; @@ -3022,7 +2800,7 @@ void mgslpc_remove_device(MGSLPC_INFO *remove_info) } } -static struct pcmcia_device_id mgslpc_ids[] = { +static const struct pcmcia_device_id mgslpc_ids[] = { PCMCIA_DEVICE_MANF_CARD(0x02c5, 0x0050), PCMCIA_DEVICE_NULL }; @@ -3030,17 +2808,15 @@ MODULE_DEVICE_TABLE(pcmcia, mgslpc_ids); static struct pcmcia_driver mgslpc_driver = { .owner = THIS_MODULE, - .drv = { - .name = "synclink_cs", - }, - .probe = mgslpc_attach, + .name = "synclink_cs", + .probe = mgslpc_probe, .remove = mgslpc_detach, .id_table = mgslpc_ids, .suspend = mgslpc_suspend, .resume = mgslpc_resume, }; -static struct tty_operations mgslpc_ops = { +static const struct tty_operations mgslpc_ops = { .open = mgslpc_open, .close = mgslpc_close, .write = mgslpc_write, @@ -3055,91 +2831,73 @@ static struct tty_operations mgslpc_ops = { .send_xchar = mgslpc_send_xchar, .break_ctl = mgslpc_break, .wait_until_sent = mgslpc_wait_until_sent, - .read_proc = mgslpc_read_proc, .set_termios = mgslpc_set_termios, .stop = tx_pause, .start = tx_release, .hangup = mgslpc_hangup, .tiocmget = tiocmget, .tiocmset = tiocmset, + .get_icount = mgslpc_get_icount, + .proc_fops = &mgslpc_proc_fops, }; -static void synclink_cs_cleanup(void) +static int __init synclink_cs_init(void) { int rc; - printk("Unloading %s: version %s\n", driver_name, driver_version); - - while(mgslpc_device_list) - mgslpc_remove_device(mgslpc_device_list); - - if (serial_driver) { - if ((rc = tty_unregister_driver(serial_driver))) - printk("%s(%d) failed to unregister tty driver err=%d\n", - __FILE__,__LINE__,rc); - put_tty_driver(serial_driver); + if (break_on_load) { + mgslpc_get_text_ptr(); + BREAKPOINT(); } - pcmcia_unregister_driver(&mgslpc_driver); -} - -static int __init synclink_cs_init(void) -{ - int rc; - - if (break_on_load) { - mgslpc_get_text_ptr(); - BREAKPOINT(); - } - - printk("%s %s\n", driver_name, driver_version); + serial_driver = tty_alloc_driver(MAX_DEVICE_COUNT, + TTY_DRIVER_REAL_RAW | + TTY_DRIVER_DYNAMIC_DEV); + if (IS_ERR(serial_driver)) { + rc = PTR_ERR(serial_driver); + goto err; + } - if ((rc = pcmcia_register_driver(&mgslpc_driver)) < 0) - return rc; + /* Initialize the tty_driver structure */ + serial_driver->driver_name = "synclink_cs"; + serial_driver->name = "ttySLP"; + serial_driver->major = ttymajor; + serial_driver->minor_start = 64; + serial_driver->type = TTY_DRIVER_TYPE_SERIAL; + serial_driver->subtype = SERIAL_TYPE_NORMAL; + serial_driver->init_termios = tty_std_termios; + serial_driver->init_termios.c_cflag = + B9600 | CS8 | CREAD | HUPCL | CLOCAL; + tty_set_operations(serial_driver, &mgslpc_ops); + + rc = tty_register_driver(serial_driver); + if (rc < 0) { + printk(KERN_ERR "%s(%d):Couldn't register serial driver\n", + __FILE__, __LINE__); + goto err_put_tty; + } - serial_driver = alloc_tty_driver(MAX_DEVICE_COUNT); - if (!serial_driver) { - rc = -ENOMEM; - goto error; - } + rc = pcmcia_register_driver(&mgslpc_driver); + if (rc < 0) + goto err_unreg_tty; - /* Initialize the tty_driver structure */ - - serial_driver->owner = THIS_MODULE; - serial_driver->driver_name = "synclink_cs"; - serial_driver->name = "ttySLP"; - serial_driver->major = ttymajor; - serial_driver->minor_start = 64; - serial_driver->type = TTY_DRIVER_TYPE_SERIAL; - serial_driver->subtype = SERIAL_TYPE_NORMAL; - serial_driver->init_termios = tty_std_termios; - serial_driver->init_termios.c_cflag = - B9600 | CS8 | CREAD | HUPCL | CLOCAL; - serial_driver->flags = TTY_DRIVER_REAL_RAW; - tty_set_operations(serial_driver, &mgslpc_ops); - - if ((rc = tty_register_driver(serial_driver)) < 0) { - printk("%s(%d):Couldn't register serial driver\n", - __FILE__,__LINE__); - put_tty_driver(serial_driver); - serial_driver = NULL; - goto error; - } - - printk("%s %s, tty major#%d\n", - driver_name, driver_version, - serial_driver->major); - - return 0; + printk(KERN_INFO "%s %s, tty major#%d\n", driver_name, driver_version, + serial_driver->major); -error: - synclink_cs_cleanup(); - return rc; + return 0; +err_unreg_tty: + tty_unregister_driver(serial_driver); +err_put_tty: + put_tty_driver(serial_driver); +err: + return rc; } -static void __exit synclink_cs_exit(void) +static void __exit synclink_cs_exit(void) { - synclink_cs_cleanup(); + pcmcia_unregister_driver(&mgslpc_driver); + tty_unregister_driver(serial_driver); + put_tty_driver(serial_driver); } module_init(synclink_cs_init); @@ -3150,8 +2908,8 @@ 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) { @@ -3170,7 +2928,7 @@ 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; @@ -3184,7 +2942,7 @@ 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 @@ -3196,14 +2954,14 @@ 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 @@ -3213,9 +2971,9 @@ 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 @@ -3226,9 +2984,9 @@ 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 @@ -3240,12 +2998,12 @@ 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 @@ -3256,76 +3014,76 @@ 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) */ - val = read_reg(info, CHA + CCR1) | (BIT2 + BIT1 + BIT0); + + /* CCR1:02..00 CM[2..0] Clock Mode = 111 (clock mode 7) */ + val = read_reg(info, CHA + CCR1) | (BIT2 | BIT1 | BIT0); write_reg(info, CHA + CCR1, val); - - /* CCR2:04 SSEL Clock source select, 1=submode b */ - val = read_reg(info, CHA + CCR2) | (BIT4 + BIT5); + + /* 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); } -void hdlc_mode(MGSLPC_INFO *info) +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 @@ -3337,16 +3095,16 @@ 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 @@ -3356,7 +3114,7 @@ void hdlc_mode(MGSLPC_INFO *info) * 01..00 SM[1..0] Serial Mode, 00=HDLC * * 11000000 - */ + */ val = 0xc0; switch (info->params.encoding) { @@ -3367,14 +3125,14 @@ void hdlc_mode(MGSLPC_INFO *info) val |= BIT4; break; // FM0 case HDLC_ENCODING_BIPHASE_MARK: - val |= BIT4 + BIT2; + val |= BIT4 | BIT2; break; // FM1 case HDLC_ENCODING_BIPHASE_LEVEL: - val |= BIT4 + BIT3; + val |= BIT4 | BIT3; break; // Manchester } write_reg(info, CHA + CCR0, val); - + /* CCR1 * * 07 SFLG Shared Flag, 0 = disable shared flags @@ -3385,10 +3143,10 @@ 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 @@ -3400,7 +3158,7 @@ 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)) @@ -3412,7 +3170,7 @@ 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 @@ -3424,10 +3182,10 @@ 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; + val |= BIT2 | BIT1; if (info->params.preamble != HDLC_PREAMBLE_PATTERN_NONE) val |= BIT5; switch (info->params.preamble_length) @@ -3439,12 +3197,12 @@ void hdlc_mode(MGSLPC_INFO *info) val |= BIT6; break; case HDLC_PREAMBLE_LENGTH_64BITS: - val |= BIT7 + BIT6; + val |= BIT7 | BIT6; break; } write_reg(info, CHA + CCR3, val); - - /* PRE - Preamble pattern */ + + /* PRE - Preamble pattern */ val = 0; switch (info->params.preamble) { @@ -3454,7 +3212,7 @@ 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 @@ -3465,21 +3223,21 @@ 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 @@ -3489,7 +3247,7 @@ 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; @@ -3500,18 +3258,18 @@ 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); irq_enable(info, CHA, - IRQ_RXEOM + IRQ_RXFIFO + IRQ_ALLSENT + - IRQ_UNDERRUN + IRQ_TXFIFO); + IRQ_RXEOM | IRQ_RXFIFO | IRQ_ALLSENT | + IRQ_UNDERRUN | IRQ_TXFIFO); issue_command(info, CHA, CMD_TXRESET + CMD_RXRESET); wait_command_complete(info, CHA); read_reg16(info, CHA + ISR); /* clear pending IRQs */ - + /* Master clock mode enabled above to allow reset commands * to complete even if no data clocks are present. * @@ -3521,7 +3279,7 @@ 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); @@ -3531,100 +3289,100 @@ void hdlc_mode(MGSLPC_INFO *info) rx_stop(info); } -void rx_stop(MGSLPC_INFO *info) +static void rx_stop(MGSLPC_INFO *info) { if (debug_level >= DEBUG_LEVEL_ISR) printk("%s(%d):rx_stop(%s)\n", - __FILE__,__LINE__, info->device_name ); - - /* MODE:03 RAC Receiver Active, 0=inactive */ + __FILE__, __LINE__, info->device_name); + + /* MODE:03 RAC Receiver Active, 0=inactive */ clear_reg_bits(info, CHA + MODE, BIT3); - info->rx_enabled = 0; - info->rx_overflow = 0; + info->rx_enabled = false; + info->rx_overflow = false; } -void rx_start(MGSLPC_INFO *info) +static void rx_start(MGSLPC_INFO *info) { if (debug_level >= DEBUG_LEVEL_ISR) printk("%s(%d):rx_start(%s)\n", - __FILE__,__LINE__, info->device_name ); + __FILE__, __LINE__, info->device_name); rx_reset_buffers(info); - info->rx_enabled = 0; - info->rx_overflow = 0; + info->rx_enabled = false; + info->rx_overflow = false; - /* 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; + info->rx_enabled = true; } -void tx_start(MGSLPC_INFO *info) +static void tx_start(MGSLPC_INFO *info, struct tty_struct *tty) { if (debug_level >= DEBUG_LEVEL_ISR) printk("%s(%d):tx_start(%s)\n", - __FILE__,__LINE__, info->device_name ); - + __FILE__, __LINE__, info->device_name); + if (info->tx_count) { /* If auto RTS enabled and RTS is inactive, then assert */ /* RTS and set a flag indicating that the driver should */ /* negate RTS when the transmission completes. */ - info->drop_rts_on_tx_done = 0; + info->drop_rts_on_tx_done = false; if (info->params.flags & HDLC_FLAG_AUTO_RTS) { get_signals(info); if (!(info->serial_signals & SerialSignal_RTS)) { info->serial_signals |= SerialSignal_RTS; set_signals(info); - info->drop_rts_on_tx_done = 1; + info->drop_rts_on_tx_done = true; } } if (info->params.mode == MGSL_MODE_ASYNC) { if (!info->tx_active) { - info->tx_active = 1; - tx_ready(info); + info->tx_active = true; + tx_ready(info, tty); } } else { - info->tx_active = 1; - tx_ready(info); - info->tx_timer.expires = jiffies + msecs_to_jiffies(5000); - add_timer(&info->tx_timer); + info->tx_active = true; + tx_ready(info, tty); + mod_timer(&info->tx_timer, jiffies + + msecs_to_jiffies(5000)); } } if (!info->tx_enabled) - info->tx_enabled = 1; + info->tx_enabled = true; } -void tx_stop(MGSLPC_INFO *info) +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); + __FILE__, __LINE__, info->device_name); + + del_timer(&info->tx_timer); - info->tx_enabled = 0; - info->tx_active = 0; + info->tx_enabled = false; + info->tx_active = false; } /* Reset the adapter to a known state and prepare it for further use. */ -void reset_device(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 @@ -3634,9 +3392,9 @@ 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) @@ -3648,7 +3406,7 @@ void reset_device(MGSLPC_INFO *info) * 0000 0001 */ // write_reg(info, PVR, PVR_DTR); - + /* IPC Interrupt Port Configuration * * 07 VIS 1=Masked interrupts visible @@ -3658,19 +3416,19 @@ 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); } -void async_mode(MGSLPC_INFO *info) +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 @@ -3683,16 +3441,16 @@ 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 @@ -3702,9 +3460,9 @@ 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 @@ -3713,9 +3471,9 @@ 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 @@ -3727,18 +3485,18 @@ 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 @@ -3748,10 +3506,10 @@ 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 @@ -3761,7 +3519,7 @@ 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 */ @@ -3776,7 +3534,7 @@ void async_mode(MGSLPC_INFO *info) val |= BIT4; } write_reg(info, CHA + DAFO, val); - + /* RFC Rx FIFO Control * * 07 Reserved, 0 @@ -3788,15 +3546,15 @@ 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 @@ -3806,26 +3564,26 @@ 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); irq_enable(info, CHA, - IRQ_RXEOM + IRQ_RXFIFO + IRQ_BREAK_ON + IRQ_RXTIME + - IRQ_ALLSENT + IRQ_TXFIFO); + IRQ_RXEOM | IRQ_RXFIFO | IRQ_BREAK_ON | IRQ_RXTIME | + IRQ_ALLSENT | IRQ_TXFIFO); issue_command(info, CHA, CMD_TXRESET + CMD_RXRESET); wait_command_complete(info, CHA); read_reg16(info, CHA + ISR); /* clear pending IRQs */ @@ -3833,9 +3591,9 @@ void async_mode(MGSLPC_INFO *info) /* Set the HDLC idle mode for the transmitter. */ -void tx_set_idle(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 @@ -3844,12 +3602,12 @@ void tx_set_idle(MGSLPC_INFO *info) /* get state of the V24 status (input) signals. */ -void get_signals(MGSLPC_INFO *info) +static void get_signals(MGSLPC_INFO *info) { unsigned char status = 0; - - /* preserve DTR and RTS */ - info->serial_signals &= SerialSignal_DTR + SerialSignal_RTS; + + /* preserve RTS and DTR */ + info->serial_signals &= SerialSignal_RTS | SerialSignal_DTR; if (read_reg(info, CHB + VSTR) & BIT7) info->serial_signals |= SerialSignal_DCD; @@ -3863,10 +3621,10 @@ void get_signals(MGSLPC_INFO *info) info->serial_signals |= SerialSignal_DSR; } -/* Set the state of DTR and RTS based on contents of +/* Set the state of RTS and DTR based on contents of * serial_signals member of device extension. */ -void set_signals(MGSLPC_INFO *info) +static void set_signals(MGSLPC_INFO *info) { unsigned char val; @@ -3890,7 +3648,7 @@ void set_signals(MGSLPC_INFO *info) set_reg_bits(info, CHA + PVR, PVR_DTR); } -void rx_reset_buffers(MGSLPC_INFO *info) +static void rx_reset_buffers(MGSLPC_INFO *info) { RXBUF *buf; int i; @@ -3907,19 +3665,18 @@ void rx_reset_buffers(MGSLPC_INFO *info) /* Attempt to return a received HDLC frame * Only frames received without errors are returned. * - * Returns 1 if frame returned, otherwise 0 + * Returns true if frame returned, otherwise false */ -int rx_get_frame(MGSLPC_INFO *info) +static bool rx_get_frame(MGSLPC_INFO *info, struct tty_struct *tty) { unsigned short status; RXBUF *buf; unsigned int framesize = 0; unsigned long flags; - struct tty_struct *tty = info->tty; - int return_frame = 0; - + bool return_frame = false; + if (info->rx_frame_count == 0) - return 0; + return false; buf = (RXBUF*)(info->rx_buf + (info->rx_get * info->rx_buf_size)); @@ -3938,29 +3695,28 @@ int rx_get_frame(MGSLPC_INFO *info) else if (!(status & BIT5)) { info->icount.rxcrc++; if (info->params.crc_type & HDLC_CRC_RETURN_EX) - return_frame = 1; + return_frame = true; } framesize = 0; -#ifdef CONFIG_HDLC +#if SYNCLINK_GENERIC_HDLC { - struct net_device_stats *stats = hdlc_stats(info->netdev); - stats->rx_errors++; - stats->rx_frame_errors++; + info->netdev->stats.rx_errors++; + info->netdev->stats.rx_frame_errors++; } #endif } else - return_frame = 1; + return_frame = true; if (return_frame) framesize = buf->count; if (debug_level >= DEBUG_LEVEL_BH) printk("%s(%d):rx_get_frame(%s) status=%04X size=%d\n", - __FILE__,__LINE__,info->device_name,status,framesize); - + __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) || @@ -3975,7 +3731,7 @@ int rx_get_frame(MGSLPC_INFO *info) ++framesize; } -#ifdef CONFIG_HDLC +#if SYNCLINK_GENERIC_HDLC if (info->netcount) hdlcdev_rx(info, buf->data, framesize); else @@ -3984,27 +3740,27 @@ int rx_get_frame(MGSLPC_INFO *info) } } - spin_lock_irqsave(&info->lock,flags); + spin_lock_irqsave(&info->lock, flags); buf->status = buf->count = 0; info->rx_frame_count--; info->rx_get++; if (info->rx_get >= info->rx_buf_count) info->rx_get = 0; - spin_unlock_irqrestore(&info->lock,flags); + spin_unlock_irqrestore(&info->lock, flags); - return 1; + return true; } -BOOLEAN register_test(MGSLPC_INFO *info) +static bool 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; - BOOLEAN rc = TRUE; + bool rc = true; unsigned long flags; - spin_lock_irqsave(&info->lock,flags); + spin_lock_irqsave(&info->lock, flags); reset_device(info); for (i = 0; i < count; i++) { @@ -4012,27 +3768,27 @@ BOOLEAN register_test(MGSLPC_INFO *info) write_reg(info, XAD2, patterns[(i + 1) % count]); if ((read_reg(info, XAD1) != patterns[i]) || (read_reg(info, XAD2) != patterns[(i + 1) % count])) { - rc = FALSE; + rc = false; break; } } - spin_unlock_irqrestore(&info->lock,flags); + spin_unlock_irqrestore(&info->lock, flags); return rc; } -BOOLEAN irq_test(MGSLPC_INFO *info) +static bool irq_test(MGSLPC_INFO *info) { unsigned long end_time; unsigned long flags; - spin_lock_irqsave(&info->lock,flags); + spin_lock_irqsave(&info->lock, flags); reset_device(info); - info->testing_irq = TRUE; + info->testing_irq = true; hdlc_mode(info); - info->irq_occurred = FALSE; + info->irq_occurred = false; /* init hdlc mode */ @@ -4040,71 +3796,71 @@ BOOLEAN irq_test(MGSLPC_INFO *info) write_reg(info, CHA + TIMR, 0); /* 512 cycles */ issue_command(info, CHA, CMD_START_TIMER); - spin_unlock_irqrestore(&info->lock,flags); + spin_unlock_irqrestore(&info->lock, flags); end_time=100; while(end_time-- && !info->irq_occurred) { msleep_interruptible(10); } - - info->testing_irq = FALSE; - spin_lock_irqsave(&info->lock,flags); + 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; + spin_unlock_irqrestore(&info->lock, flags); + + return info->irq_occurred; } -int adapter_test(MGSLPC_INFO *info) +static int adapter_test(MGSLPC_INFO *info) { if (!register_test(info)) { info->init_error = DiagStatus_AddressFailure; - printk( "%s(%d):Register test failure for device %s Addr=%04X\n", - __FILE__,__LINE__,info->device_name, (unsigned short)(info->io_base) ); + printk("%s(%d):Register test failure for device %s Addr=%04X\n", + __FILE__, __LINE__, info->device_name, (unsigned short)(info->io_base)); return -ENODEV; } if (!irq_test(info)) { info->init_error = DiagStatus_IrqFailure; - printk( "%s(%d):Interrupt test failure for device %s IRQ=%d\n", - __FILE__,__LINE__,info->device_name, (unsigned short)(info->irq_level) ); + printk("%s(%d):Interrupt test failure for device %s IRQ=%d\n", + __FILE__, __LINE__, info->device_name, (unsigned short)(info->irq_level)); return -ENODEV; } if (debug_level >= DEBUG_LEVEL_INFO) printk("%s(%d):device %s passed diagnostics\n", - __FILE__,__LINE__,info->device_name); + __FILE__, __LINE__, info->device_name); return 0; } -void trace_block(MGSLPC_INFO *info,const char* data, int count, int xmit) +static void trace_block(MGSLPC_INFO *info,const char* data, int count, int xmit) { int i; int linecount; if (xmit) - printk("%s tx data:\n",info->device_name); + printk("%s tx data:\n", info->device_name); else - printk("%s rx data:\n",info->device_name); - + printk("%s rx data:\n", info->device_name); + while(count) { if (count > 16) linecount = 16; else linecount = count; - + for(i=0;i<linecount;i++) - printk("%02X ",(unsigned char)data[i]); + printk("%02X ", (unsigned char)data[i]); for(;i<17;i++) printk(" "); for(i=0;i<linecount;i++) { if (data[i]>=040 && data[i]<=0176) - printk("%c",data[i]); + printk("%c", data[i]); else printk("."); } printk("\n"); - + data += linecount; count -= linecount; } @@ -4113,33 +3869,37 @@ void trace_block(MGSLPC_INFO *info,const char* data, int count, int xmit) /* HDLC frame time out * update stats and do tx completion processing */ -void tx_timeout(unsigned long context) +static void tx_timeout(unsigned long context) { MGSLPC_INFO *info = (MGSLPC_INFO*)context; unsigned long flags; - - if ( debug_level >= DEBUG_LEVEL_INFO ) - printk( "%s(%d):tx_timeout(%s)\n", - __FILE__,__LINE__,info->device_name); - if(info->tx_active && - info->params.mode == MGSL_MODE_HDLC) { + + if (debug_level >= DEBUG_LEVEL_INFO) + printk("%s(%d):tx_timeout(%s)\n", + __FILE__, __LINE__, info->device_name); + if (info->tx_active && + info->params.mode == MGSL_MODE_HDLC) { info->icount.txtimeout++; } - spin_lock_irqsave(&info->lock,flags); - info->tx_active = 0; + spin_lock_irqsave(&info->lock, flags); + info->tx_active = false; info->tx_count = info->tx_put = info->tx_get = 0; - spin_unlock_irqrestore(&info->lock,flags); - -#ifdef CONFIG_HDLC + spin_unlock_irqrestore(&info->lock, flags); + +#if SYNCLINK_GENERIC_HDLC if (info->netcount) hdlcdev_tx_done(info); else #endif - bh_transmit(info); + { + struct tty_struct *tty = tty_port_tty_get(&info->port); + bh_transmit(info, tty); + tty_kref_put(tty); + } } -#ifdef CONFIG_HDLC +#if SYNCLINK_GENERIC_HDLC /** * called by generic HDLC layer when protocol selected (PPP, frame relay, etc.) @@ -4155,11 +3915,12 @@ static int hdlcdev_attach(struct net_device *dev, unsigned short encoding, unsigned short parity) { MGSLPC_INFO *info = dev_to_port(dev); + struct tty_struct *tty; unsigned char new_encoding; unsigned short new_crctype; /* return error if TTY interface open */ - if (info->count) + if (info->port.count) return -EBUSY; switch (encoding) @@ -4181,11 +3942,14 @@ static int hdlcdev_attach(struct net_device *dev, unsigned short encoding, } info->params.encoding = new_encoding; - info->params.crc_type = new_crctype;; + info->params.crc_type = new_crctype; /* if network interface up, reprogram hardware */ - if (info->netcount) - mgslpc_program_hw(info); + if (info->netcount) { + tty = tty_port_tty_get(&info->port); + mgslpc_program_hw(info, tty); + tty_kref_put(tty); + } return 0; } @@ -4195,29 +3959,27 @@ static int hdlcdev_attach(struct net_device *dev, unsigned short encoding, * * skb socket buffer containing HDLC frame * dev pointer to network device structure - * - * returns 0 if success, otherwise error code */ -static int hdlcdev_xmit(struct sk_buff *skb, struct net_device *dev) +static netdev_tx_t hdlcdev_xmit(struct sk_buff *skb, + struct net_device *dev) { MGSLPC_INFO *info = dev_to_port(dev); - struct net_device_stats *stats = hdlc_stats(dev); unsigned long flags; if (debug_level >= DEBUG_LEVEL_INFO) - printk(KERN_INFO "%s:hdlc_xmit(%s)\n",__FILE__,dev->name); + printk(KERN_INFO "%s:hdlc_xmit(%s)\n", __FILE__, dev->name); /* stop sending until this frame completes */ netif_stop_queue(dev); /* copy data to device buffers */ - memcpy(info->tx_buf, skb->data, skb->len); + skb_copy_from_linear_data(skb, info->tx_buf, skb->len); info->tx_get = 0; info->tx_put = info->tx_count = skb->len; /* update network statistics */ - stats->tx_packets++; - stats->tx_bytes += skb->len; + dev->stats.tx_packets++; + dev->stats.tx_bytes += skb->len; /* done with socket buffer, so free it */ dev_kfree_skb(skb); @@ -4226,12 +3988,15 @@ static int hdlcdev_xmit(struct sk_buff *skb, struct net_device *dev) dev->trans_start = jiffies; /* start hardware transmitter if necessary */ - spin_lock_irqsave(&info->lock,flags); - if (!info->tx_active) - tx_start(info); - spin_unlock_irqrestore(&info->lock,flags); + spin_lock_irqsave(&info->lock, flags); + if (!info->tx_active) { + struct tty_struct *tty = tty_port_tty_get(&info->port); + tx_start(info, tty); + tty_kref_put(tty); + } + spin_unlock_irqrestore(&info->lock, flags); - return 0; + return NETDEV_TX_OK; } /** @@ -4245,19 +4010,21 @@ static int hdlcdev_xmit(struct sk_buff *skb, struct net_device *dev) static int hdlcdev_open(struct net_device *dev) { MGSLPC_INFO *info = dev_to_port(dev); + struct tty_struct *tty; int rc; unsigned long flags; if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s:hdlcdev_open(%s)\n",__FILE__,dev->name); + printk("%s:hdlcdev_open(%s)\n", __FILE__, dev->name); /* generic HDLC layer open processing */ - if ((rc = hdlc_open(dev))) + rc = hdlc_open(dev); + if (rc != 0) return rc; /* arbitrate between network and tty opens */ spin_lock_irqsave(&info->netlock, flags); - if (info->count != 0 || info->netcount != 0) { + if (info->port.count != 0 || info->netcount != 0) { printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name); spin_unlock_irqrestore(&info->netlock, flags); return -EBUSY; @@ -4265,17 +4032,20 @@ static int hdlcdev_open(struct net_device *dev) info->netcount=1; spin_unlock_irqrestore(&info->netlock, flags); + tty = tty_port_tty_get(&info->port); /* claim resources and init adapter */ - if ((rc = startup(info)) != 0) { + rc = startup(info, tty); + if (rc != 0) { + tty_kref_put(tty); spin_lock_irqsave(&info->netlock, flags); info->netcount=0; spin_unlock_irqrestore(&info->netlock, flags); return rc; } - - /* assert DTR and RTS, apply hardware settings */ - info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR; - mgslpc_program_hw(info); + /* assert RTS and DTR, apply hardware settings */ + info->serial_signals |= SerialSignal_RTS | SerialSignal_DTR; + mgslpc_program_hw(info, tty); + tty_kref_put(tty); /* enable network layer transmit */ dev->trans_start = jiffies; @@ -4285,8 +4055,10 @@ static int hdlcdev_open(struct net_device *dev) spin_lock_irqsave(&info->lock, flags); get_signals(info); spin_unlock_irqrestore(&info->lock, flags); - hdlc_set_carrier(info->serial_signals & SerialSignal_DCD, dev); - + if (info->serial_signals & SerialSignal_DCD) + netif_carrier_on(dev); + else + netif_carrier_off(dev); return 0; } @@ -4301,16 +4073,17 @@ static int hdlcdev_open(struct net_device *dev) static int hdlcdev_close(struct net_device *dev) { MGSLPC_INFO *info = dev_to_port(dev); + struct tty_struct *tty = tty_port_tty_get(&info->port); unsigned long flags; if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s:hdlcdev_close(%s)\n",__FILE__,dev->name); + printk("%s:hdlcdev_close(%s)\n", __FILE__, dev->name); netif_stop_queue(dev); /* shutdown adapter and release resources */ - shutdown(info); - + shutdown(info, tty); + tty_kref_put(tty); hdlc_close(dev); spin_lock_irqsave(&info->netlock, flags); @@ -4338,15 +4111,17 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) unsigned int flags; if (debug_level >= DEBUG_LEVEL_INFO) - printk("%s:hdlcdev_ioctl(%s)\n",__FILE__,dev->name); + printk("%s:hdlcdev_ioctl(%s)\n", __FILE__, dev->name); /* return error if TTY interface open */ - if (info->count) + if (info->port.count) return -EBUSY; if (cmd != SIOCWANDEV) return hdlc_ioctl(dev, ifr, cmd); + memset(&new_line, 0, size); + switch(ifr->ifr_settings.type) { case IF_GET_IFACE: /* return current sync_serial_settings */ @@ -4414,8 +4189,11 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) info->params.clock_speed = 0; /* if network interface up, reprogram hardware */ - if (info->netcount) - mgslpc_program_hw(info); + if (info->netcount) { + struct tty_struct *tty = tty_port_tty_get(&info->port); + mgslpc_program_hw(info, tty); + tty_kref_put(tty); + } return 0; default: @@ -4431,18 +4209,17 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) static void hdlcdev_tx_timeout(struct net_device *dev) { MGSLPC_INFO *info = dev_to_port(dev); - struct net_device_stats *stats = hdlc_stats(dev); unsigned long flags; if (debug_level >= DEBUG_LEVEL_INFO) - printk("hdlcdev_tx_timeout(%s)\n",dev->name); + printk("hdlcdev_tx_timeout(%s)\n", dev->name); - stats->tx_errors++; - stats->tx_aborted_errors++; + dev->stats.tx_errors++; + dev->stats.tx_aborted_errors++; - spin_lock_irqsave(&info->lock,flags); + spin_lock_irqsave(&info->lock, flags); tx_stop(info); - spin_unlock_irqrestore(&info->lock,flags); + spin_unlock_irqrestore(&info->lock, flags); netif_wake_queue(dev); } @@ -4471,29 +4248,35 @@ static void hdlcdev_rx(MGSLPC_INFO *info, char *buf, int size) { struct sk_buff *skb = dev_alloc_skb(size); struct net_device *dev = info->netdev; - struct net_device_stats *stats = hdlc_stats(dev); if (debug_level >= DEBUG_LEVEL_INFO) - printk("hdlcdev_rx(%s)\n",dev->name); + printk("hdlcdev_rx(%s)\n", dev->name); if (skb == NULL) { printk(KERN_NOTICE "%s: can't alloc skb, dropping packet\n", dev->name); - stats->rx_dropped++; + dev->stats.rx_dropped++; return; } - memcpy(skb_put(skb, size),buf,size); + memcpy(skb_put(skb, size), buf, size); - skb->protocol = hdlc_type_trans(skb, info->netdev); + skb->protocol = hdlc_type_trans(skb, dev); - stats->rx_packets++; - stats->rx_bytes += size; + dev->stats.rx_packets++; + dev->stats.rx_bytes += size; netif_rx(skb); - - info->netdev->last_rx = jiffies; } +static const struct net_device_ops hdlcdev_ops = { + .ndo_open = hdlcdev_open, + .ndo_stop = hdlcdev_close, + .ndo_change_mtu = hdlc_change_mtu, + .ndo_start_xmit = hdlc_start_xmit, + .ndo_do_ioctl = hdlcdev_ioctl, + .ndo_tx_timeout = hdlcdev_tx_timeout, +}; + /** * called by device driver when adding device instance * do generic HDLC initialization @@ -4510,8 +4293,9 @@ static int hdlcdev_init(MGSLPC_INFO *info) /* allocate and initialize network and HDLC layer objects */ - if (!(dev = alloc_hdlcdev(info))) { - printk(KERN_ERR "%s:hdlc device allocation failure\n",__FILE__); + dev = alloc_hdlcdev(info); + if (dev == NULL) { + printk(KERN_ERR "%s:hdlc device allocation failure\n", __FILE__); return -ENOMEM; } @@ -4520,11 +4304,8 @@ static int hdlcdev_init(MGSLPC_INFO *info) dev->irq = info->irq_level; /* network layer callbacks and settings */ - dev->do_ioctl = hdlcdev_ioctl; - dev->open = hdlcdev_open; - dev->stop = hdlcdev_close; - dev->tx_timeout = hdlcdev_tx_timeout; - dev->watchdog_timeo = 10*HZ; + dev->netdev_ops = &hdlcdev_ops; + dev->watchdog_timeo = 10 * HZ; dev->tx_queue_len = 50; /* generic HDLC layer callbacks and settings */ @@ -4533,8 +4314,9 @@ static int hdlcdev_init(MGSLPC_INFO *info) hdlc->xmit = hdlcdev_xmit; /* register objects with HDLC layer */ - if ((rc = register_hdlc_device(dev))) { - printk(KERN_WARNING "%s:unable to register hdlc device\n",__FILE__); + rc = register_hdlc_device(dev); + if (rc) { + printk(KERN_WARNING "%s:unable to register hdlc device\n", __FILE__); free_netdev(dev); return rc; } |