struct etrax100par_struct *info =		(struct etrax100par_struct *)p->private_data;	*info->irq_mask_clr = info->irq_mask_tx;	DPRINTK("* E100 PP %d: disable irq\n", p->portnum);}static voidparport_etrax_data_forward(struct parport *p){	struct etrax100par_struct *info =		(struct etrax100par_struct *)p->private_data;	DPRINTK("* E100 PP %d: forward mode\n", p->portnum);	SETS(info->reg_ctrl_data_shadow, R_PAR0_CTRL_DATA, oe, enable);	*info->reg_ctrl_data = info->reg_ctrl_data_shadow;}static voidparport_etrax_data_reverse(struct parport *p){	struct etrax100par_struct *info =		(struct etrax100par_struct *)p->private_data;	DPRINTK("* E100 PP %d: reverse mode\n", p->portnum);	SETS(info->reg_ctrl_data_shadow, R_PAR0_CTRL_DATA, oe, disable);	*info->reg_ctrl_data = info->reg_ctrl_data_shadow;}static voidparport_etrax_init_state(struct pardevice *dev, struct parport_state *s){	DPRINTK("* E100 PP: parport_etrax_init_state\n");}static voidparport_etrax_save_state(struct parport *p, struct parport_state *s){	DPRINTK("* E100 PP: parport_etrax_save_state\n");}static voidparport_etrax_restore_state(struct parport *p, struct parport_state *s){	DPRINTK("* E100 PP: parport_etrax_restore_state\n");}static voidparport_etrax_inc_use_count(void){	MOD_INC_USE_COUNT;}static voidparport_etrax_dec_use_count(void){	MOD_DEC_USE_COUNT;}static structparport_operations pp_etrax_ops = {	parport_etrax_write_data,	parport_etrax_read_data,	parport_etrax_write_control,	parport_etrax_read_control,	parport_etrax_frob_control,	parport_etrax_read_status,	parport_etrax_enable_irq,	parport_etrax_disable_irq,	parport_etrax_data_forward, 	parport_etrax_data_reverse, 	parport_etrax_init_state,	parport_etrax_save_state,	parport_etrax_restore_state,	parport_etrax_inc_use_count,	parport_etrax_dec_use_count,	parport_ieee1284_epp_write_data,	parport_ieee1284_epp_read_data,	parport_ieee1284_epp_write_addr,	parport_ieee1284_epp_read_addr,	parport_ieee1284_ecp_write_data,	parport_ieee1284_ecp_read_data,	parport_ieee1284_ecp_write_addr,	parport_ieee1284_write_compat,	parport_ieee1284_read_nibble,	parport_ieee1284_read_byte,};	static void parport_etrax_interrupt(int irq, void *dev_id, struct pt_regs *regs){	struct etrax100par_struct *info = (struct etrax100par_struct *)		((struct parport *)dev_id)->private_data;	DPRINTK("* E100 PP %d: Interrupt received\n",		((struct parport *)dev_id)->portnum);	*info->irq_mask_clr = info->irq_mask_tx;	parport_generic_irq(irq, (struct parport *)dev_id, regs);}/* ----------- Initialisation code --------------------------------- */static void __initparport_etrax_show_parallel_version(void){	printk("ETRAX 100LX parallel port driver v1.0, (c) 2001 Axis Communications AB\n");}#ifdef CONFIG_ETRAX_PAR0_DMA#define PAR0_USE_DMA 1#else#define PAR0_USE_DMA 0#endif#ifdef CONFIG_ETRAX_PAR1_DMA#define PAR1_USE_DMA 1#else#define PAR1_USE_DMA 0#endifstatic void __initparport_etrax_init_registers(void){	struct etrax100par_struct *info;	int i;	for (i = 0, info = port_table; i < 2; i++, info++) {#ifndef CONFIG_ETRAX_PARALLEL_PORT0		if (i == 0)			continue;#endif#ifndef CONFIG_ETRAX_PARALLEL_PORT1		if (i == 1)			continue;#endif		info->reg_config_shadow = 			IO_STATE(R_PAR0_CONFIG, iseli, inv)       |			IO_STATE(R_PAR0_CONFIG, iautofd, inv)     |			IO_STATE(R_PAR0_CONFIG, istrb, inv)       |			IO_STATE(R_PAR0_CONFIG, iinit, inv)       |			IO_STATE(R_PAR0_CONFIG, rle_in, disable)  |			IO_STATE(R_PAR0_CONFIG, rle_out, disable) |			IO_STATE(R_PAR0_CONFIG, enable, on)       |			IO_STATE(R_PAR0_CONFIG, force, off)       |			IO_STATE(R_PAR0_CONFIG, ign_ack, wait)    |			IO_STATE(R_PAR0_CONFIG, oe_ack, wait_oe)  |			IO_STATE(R_PAR0_CONFIG, mode, manual);		if ((i == 0 && PAR0_USE_DMA) || (i == 1 && PAR1_USE_DMA))			info->reg_config_shadow |=				IO_STATE(R_PAR0_CONFIG, dma, enable);		else			info->reg_config_shadow |=				IO_STATE(R_PAR0_CONFIG, dma, disable);		*info->reg_config = info->reg_config_shadow;		info->reg_ctrl_data_shadow = 			IO_STATE(R_PAR0_CTRL_DATA, peri_int, nop)    |			IO_STATE(R_PAR0_CTRL_DATA, oe, enable)       |			IO_STATE(R_PAR0_CTRL_DATA, seli, inactive)   |			IO_STATE(R_PAR0_CTRL_DATA, autofd, inactive) |			IO_STATE(R_PAR0_CTRL_DATA, strb, inactive)   |			IO_STATE(R_PAR0_CTRL_DATA, init, inactive)   |			IO_STATE(R_PAR0_CTRL_DATA, ecp_cmd, data)    |			IO_FIELD(R_PAR0_CTRL_DATA, data, 0);		*info->reg_ctrl_data = info->reg_ctrl_data_shadow;		/* Clear peri int without setting shadow */		*info->reg_ctrl_data = info->reg_ctrl_data_shadow |			IO_STATE(R_PAR0_CTRL_DATA, peri_int, ack);		info->reg_delay_shadow = 			IO_FIELD(R_PAR0_DELAY, setup, 5)  |			IO_FIELD(R_PAR0_DELAY, strobe, 5) |			IO_FIELD(R_PAR0_DELAY, hold, 5);		*info->reg_delay = info->reg_delay_shadow;	}#ifdef CONFIG_ETRAX_PARALLEL_PORT0#ifdef CONFIG_ETRAX_PAR0_DMA	RESET_DMA(PAR0_TX_DMA_NBR);	WAIT_DMA(PAR0_TX_DMA_NBR);#ifdef CONFIG_ETRAX_SERIAL_PORT2	printk(" Warning - DMA clash with ser2!\n");#endif /* SERIAL_PORT2 */#endif /* DMA */#endif /* PORT0 */#ifdef CONFIG_ETRAX_PARALLEL_PORT1#ifdef CONFIG_ETRAX_PAR1_DMA	RESET_DMA(PAR1_TX_DMA_NBR);	WAIT_DMA(PAR1_TX_DMA_NBR);#ifdef CONFIG_ETRAX_SERIAL_PORT3	printk(" Warning - DMA clash with ser3!\n");#endif /* SERIAL_PORT3 */#endif /* DMA */#endif /* PORT1 */} int __initparport_etrax_init(void){	struct parport *p;	int port_exists = 0;	int i;	struct etrax100par_struct *info;        const char *names[] = { "parallel 0 tx+rx", "parallel 1 tx+rx" };	parport_etrax_show_parallel_version();	parport_etrax_init_registers();        for (i = 0, info = port_table; i < NR_PORTS; i++, info++) {#ifndef CONFIG_ETRAX_PARALLEL_PORT0		if (i == 0)			continue;#endif#ifndef CONFIG_ETRAX_PARALLEL_PORT1		if (i == 1)			continue;#endif                p = parport_register_port((unsigned long)0, info->int_irq,                                          PARPORT_DMA_NONE, &pp_etrax_ops);                if (!p)			continue;                info->port = p;                p->private_data = info;                /* Axis FIXME: Set mode flags. */                /* p->modes = PARPORT_MODE_TRISTATE | PARPORT_MODE_SAFEININT; */	        if(request_irq(info->int_irq, parport_etrax_interrupt,                               SA_SHIRQ, names[i], p)) {	        	parport_unregister_port (p);                        continue;                }                printk(KERN_INFO "%s: ETRAX 100LX port %d using irq\n",                       p->name, i);                parport_proc_register(p);                parport_announce_port(p);                port_exists = 1;        }	return port_exists;}void __exitparport_etrax_exit(void){	int i;	struct etrax100par_struct *info;        for (i = 0, info = port_table; i < NR_PORTS; i++, info++) {#ifndef CONFIG_ETRAX_PARALLEL_PORT0		if (i == 0)			continue;#endif#ifndef CONFIG_ETRAX_PARALLEL_PORT1		if (i == 1)			continue;#endif		if (info->int_irq != PARPORT_IRQ_NONE)			free_irq(info->int_irq, info->port);		parport_proc_unregister(info->port);		parport_unregister_port(info->port);        }}