text: /* $Id: sportster.c,v 1.14.6.2 2001/09/23 22:24:51 kai Exp $
   *
   * low level stuff for USR Sportster internal TA
   *
   * Author       Karsten Keil
   * Copyright    by Karsten Keil      <keil@isdn4linux.de>
   * 
   * This software may be used and distributed according to the terms
   * of the GNU General Public License, incorporated herein by reference.
   *
   * Thanks to Christian "naddy" Weisgerber (3Com, US Robotics) for documentation
   *
   *
   */
  #include <linux/init.h>
  #include "hisax.h"
  #include "isac.h"
  #include "hscx.h"
  #include "isdnl1.h"
  
  extern const char *CardType[];
  const char *sportster_revision = "$Revision: 1.14.6.2 $";
  
  #define byteout(addr,val) outb(val,addr)
  #define bytein(addr) inb(addr)
  
  #define	 SPORTSTER_ISAC		0xC000
  #define	 SPORTSTER_HSCXA	0x0000
  #define	 SPORTSTER_HSCXB	0x4000
  #define	 SPORTSTER_RES_IRQ	0x8000
  #define	 SPORTSTER_RESET	0x80
  #define	 SPORTSTER_INTE		0x40
  
  static inline int
  calc_off(unsigned int base, unsigned int off)
  {
  	return(base + ((off & 0xfc)<<8) + ((off & 3)<<1));
  }
  
  static inline void
  read_fifo(unsigned int adr, u8 * data, int size)
  {
  	insb(adr, data, size);
  }
  
  static void
  write_fifo(unsigned int adr, u8 * data, int size)
  {
  	outsb(adr, data, size);
  }
  
  static u8
  isac_read(struct IsdnCardState *cs, u8 offset)
  {
  	return bytein(calc_off(cs->hw.spt.isac, offset));
  }
  
  static void
  isac_write(struct IsdnCardState *cs, u8 offset, u8 value)
  {
  	byteout(calc_off(cs->hw.spt.isac, offset), value);
  }
  
  static void
  isac_read_fifo(struct IsdnCardState *cs, u8 * data, int size)
  {
  	read_fifo(cs->hw.spt.isac, data, size);
  }
  
  static void
  isac_write_fifo(struct IsdnCardState *cs, u8 * data, int size)
  {
  	write_fifo(cs->hw.spt.isac, data, size);
  }
  
  static struct dc_hw_ops isac_ops = {
  	.read_reg   = isac_read,
  	.write_reg  = isac_write,
  	.read_fifo  = isac_read_fifo,
  	.write_fifo = isac_write_fifo,
  };
  
  static u8
  hscx_read(struct IsdnCardState *cs, int hscx, u8 offset)
  {
  	return bytein(calc_off(cs->hw.spt.hscx[hscx], offset));
  }
  
  static void
  hscx_write(struct IsdnCardState *cs, int hscx, u8 offset, u8 value)
  {
  	byteout(calc_off(cs->hw.spt.hscx[hscx], offset), value);
  }
  
  static void
  hscx_read_fifo(struct IsdnCardState *cs, int hscx, u8 *data, int size)
  {
  	read_fifo(cs->hw.spt.hscx[hscx], data, size);
  }
  
  static void
  hscx_write_fifo(struct IsdnCardState *cs, int hscx, u8 *data, int size)
  {
  	write_fifo(cs->hw.spt.hscx[hscx], data, size);
  }
  
  static struct bc_hw_ops hscx_ops = {
  	.read_reg   = hscx_read,
  	.write_reg  = hscx_write,
  	.read_fifo  = hscx_read_fifo,
  	.write_fifo = hscx_write_fifo,
  };
  
  static irqreturn_t
  sportster_interrupt(int intno, void *dev_id, struct pt_regs *regs)
  {
  	struct IsdnCardState *cs = dev_id;
  
  	hscxisac_irq(intno, dev_id, regs);
  	bytein(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ +1);
  	return IRQ_HANDLED;
  }
  
  static void
  sportster_release(struct IsdnCardState *cs)
  {
  	int i, adr;
  
  	byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, 0);
  	for (i=0; i<64; i++) {
  		adr = cs->hw.spt.cfg_reg + i *1024;
  		release_region(adr, 8);
  	}
  }
  
  static int
  sportster_reset(struct IsdnCardState *cs)
  {
  	cs->hw.spt.res_irq |= SPORTSTER_RESET; /* Reset On */
  	byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq);
  	set_current_state(TASK_UNINTERRUPTIBLE);
  	schedule_timeout((10*HZ)/1000);
  	cs->hw.spt.res_irq &= ~SPORTSTER_RESET; /* Reset Off */
  	byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq);
  	set_current_state(TASK_UNINTERRUPTIBLE);
  	schedule_timeout((10*HZ)/1000);
  	return 0;
  }
  
  static int
  Sportster_card_msg(struct IsdnCardState *cs, int mt, void *arg)
  {
  	return(0);
  }
  
  static void
  sportster_init(struct IsdnCardState *cs)
  {
  	inithscxisac(cs);
  	cs->hw.spt.res_irq |= SPORTSTER_INTE; /* IRQ On */
  	byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq);
  }
  
  static struct card_ops sportster_ops = {
  	.init     = sportster_init,
  	.reset    = sportster_reset,
  	.release  = sportster_release,
  	.irq_func = sportster_interrupt,
  };
  
  static int __init
  get_io_range(struct IsdnCardState *cs)
  {
  	int i, adr;
  	
  	for (i=0;i<64;i++) {
  		adr = cs->hw.spt.cfg_reg + i *1024;
  		if (!request_region(adr, 8, "sportster")) {
  			printk(KERN_WARNING
  				"HiSax: %s config port %x-%x already in use\n",
  				CardType[cs->typ], adr, adr + 8);
  			goto err;
  		}
  	}
  	return 1;
   err:
  	for (i=i-1; i >= 0; i--) {
  		adr = cs->hw.spt.cfg_reg + i *1024;
  		release_region(adr, 8);
  	}
  	return 0;
  }
  
  static int __init
  sportster_probe(struct IsdnCardState *cs, struct IsdnCard *card)
  {
  	cs->irq = card->para[0];
  	cs->hw.spt.cfg_reg = card->para[1];
  	if (!get_io_range(cs))
  		return -EBUSY;
  	cs->hw.spt.isac = cs->hw.spt.cfg_reg + SPORTSTER_ISAC;
  	cs->hw.spt.hscx[0] = cs->hw.spt.cfg_reg + SPORTSTER_HSCXA;
  	cs->hw.spt.hscx[1] = cs->hw.spt.cfg_reg + SPORTSTER_HSCXB;
  	
  	switch(cs->irq) {
  	case 5:	cs->hw.spt.res_irq = 1;	break;
  	case 7:	cs->hw.spt.res_irq = 2;	break;
  	case 10:cs->hw.spt.res_irq = 3;	break;
  	case 11:cs->hw.spt.res_irq = 4;	break;
  	case 12:cs->hw.spt.res_irq = 5;	break;
  	case 14:cs->hw.spt.res_irq = 6;	break;
  	case 15:cs->hw.spt.res_irq = 7;	break;
  	default:
  		printk(KERN_WARNING "Sportster: wrong IRQ\n");
  		goto err;
  	}
  	sportster_reset(cs);
  	printk(KERN_INFO "HiSax: %s config irq:%d cfg:0x%X\n",
  	       CardType[cs->typ], cs->irq, cs->hw.spt.cfg_reg);
  
  	cs->cardmsg = &Sportster_card_msg;
  	cs->card_ops = &sportster_ops;
  	if (hscxisac_setup(cs, &isac_ops, &hscx_ops))
  		goto err;
  	return 0;
   err:
  	sportster_release(cs);
  	return -EBUSY;
  }
  
  int __init
  setup_sportster(struct IsdnCard *card)
  {
  	char tmp[64];
  
  	strcpy(tmp, sportster_revision);
  	printk(KERN_INFO "HiSax: USR Sportster driver Rev. %s\n",
  	       HiSax_getrev(tmp));
  
  	if (sportster_probe(card->cs, card) < 0)
  		return 0;
  	return 1;
  }
  