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   1 /* $Id: sportster.c,v 1.16.2.4 2004/01/13 23:48:39 keil Exp $
   2  *
   3  * low level stuff for USR Sportster internal TA
   4  *
   5  * Author       Karsten Keil
   6  * Copyright    by Karsten Keil      <keil@isdn4linux.de>
   7  *
   8  * This software may be used and distributed according to the terms
   9  * of the GNU General Public License, incorporated herein by reference.
  10  *
  11  * Thanks to Christian "naddy" Weisgerber (3Com, US Robotics) for documentation
  12  *
  13  *
  14  */
  15 #include <linux/init.h>
  16 #include "hisax.h"
  17 #include "isac.h"
  18 #include "hscx.h"
  19 #include "isdnl1.h"
  20
  21 extern const char *CardType[];
  22 static const char *sportster_revision = "$Revision: 1.16.2.4 $";
  23
  24 #define byteout(addr,val) outb(val,addr)
  25 #define bytein(addr) inb(addr)
  26
  27 #define  SPORTSTER_ISAC         0xC000
  28 #define  SPORTSTER_HSCXA        0x0000
  29 #define  SPORTSTER_HSCXB        0x4000
  30 #define  SPORTSTER_RES_IRQ      0x8000
  31 #define  SPORTSTER_RESET        0x80
  32 #define  SPORTSTER_INTE         0x40
  33
  34 static inline int
  35 calc_off(unsigned int base, unsigned int off)
  36 {
  37         return(base + ((off & 0xfc)<<8) + ((off & 3)<<1));
  38 }
  39
  40 static inline void
  41 read_fifo(unsigned int adr, u_char * data, int size)
  42 {
  43         insb(adr, data, size);
  44 }
  45
  46 static void
  47 write_fifo(unsigned int adr, u_char * data, int size)
  48 {
  49         outsb(adr, data, size);
  50 }
  51
  52 /* Interface functions */
  53
  54 static u_char
  55 ReadISAC(struct IsdnCardState *cs, u_char offset)
  56 {
  57         return (bytein(calc_off(cs->hw.spt.isac, offset)));
  58 }
  59
  60 static void
  61 WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
  62 {
  63         byteout(calc_off(cs->hw.spt.isac, offset), value);
  64 }
  65
  66 static void
  67 ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size)
  68 {
  69         read_fifo(cs->hw.spt.isac, data, size);
  70 }
  71
  72 static void
  73 WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size)
  74 {
  75         write_fifo(cs->hw.spt.isac, data, size);
  76 }
  77
  78 static u_char
  79 ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
  80 {
  81         return (bytein(calc_off(cs->hw.spt.hscx[hscx], offset)));
  82 }
  83
  84 static void
  85 WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
  86 {
  87         byteout(calc_off(cs->hw.spt.hscx[hscx], offset), value);
  88 }
  89
  90 /*
  91  * fast interrupt HSCX stuff goes here
  92  */
  93
  94 #define READHSCX(cs, nr, reg) bytein(calc_off(cs->hw.spt.hscx[nr], reg))
  95 #define WRITEHSCX(cs, nr, reg, data) byteout(calc_off(cs->hw.spt.hscx[nr], reg), data)
  96 #define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo(cs->hw.spt.hscx[nr], ptr, cnt)
  97 #define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo(cs->hw.spt.hscx[nr], ptr, cnt)
  98
  99 #include "hscx_irq.c"
 100
 101 static irqreturn_t
 102 sportster_interrupt(int intno, void *dev_id)
 103 {
 104         struct IsdnCardState *cs = dev_id;
 105         u_char val;
 106         u_long flags;
 107
 108         spin_lock_irqsave(&cs->lock, flags);
 109         val = READHSCX(cs, 1, HSCX_ISTA);
 110       Start_HSCX:
 111         if (val)
 112                 hscx_int_main(cs, val);
 113         val = ReadISAC(cs, ISAC_ISTA);
 114       Start_ISAC:
 115         if (val)
 116                 isac_interrupt(cs, val);
 117         val = READHSCX(cs, 1, HSCX_ISTA);
 118         if (val) {
 119                 if (cs->debug & L1_DEB_HSCX)
 120                         debugl1(cs, "HSCX IntStat after IntRoutine");
 121                 goto Start_HSCX;
 122         }
 123         val = ReadISAC(cs, ISAC_ISTA);
 124         if (val) {
 125                 if (cs->debug & L1_DEB_ISAC)
 126                         debugl1(cs, "ISAC IntStat after IntRoutine");
 127                 goto Start_ISAC;
 128         }
 129         /* get a new irq impulse if there any pending */
 130         bytein(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ +1);
 131         spin_unlock_irqrestore(&cs->lock, flags);
 132         return IRQ_HANDLED;
 133 }
 134
 135 static void
 136 release_io_sportster(struct IsdnCardState *cs)
 137 {
 138         int i, adr;
 139
 140         byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, 0);
 141         for (i=0; i<64; i++) {
 142                 adr = cs->hw.spt.cfg_reg + i *1024;
 143                 release_region(adr, 8);
 144         }
 145 }
 146
 147 static void
 148 reset_sportster(struct IsdnCardState *cs)
 149 {
 150         cs->hw.spt.res_irq |= SPORTSTER_RESET; /* Reset On */
 151         byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq);
 152         mdelay(10);
 153         cs->hw.spt.res_irq &= ~SPORTSTER_RESET; /* Reset Off */
 154         byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq);
 155         mdelay(10);
 156 }
 157
 158 static int
 159 Sportster_card_msg(struct IsdnCardState *cs, int mt, void *arg)
 160 {
 161         u_long flags;
 162
 163         switch (mt) {
 164                 case CARD_RESET:
 165                         spin_lock_irqsave(&cs->lock, flags);
 166                         reset_sportster(cs);
 167                         spin_unlock_irqrestore(&cs->lock, flags);
 168                         return(0);
 169                 case CARD_RELEASE:
 170                         release_io_sportster(cs);
 171                         return(0);
 172                 case CARD_INIT:
 173                         spin_lock_irqsave(&cs->lock, flags);
 174                         reset_sportster(cs);
 175                         inithscxisac(cs, 1);
 176                         cs->hw.spt.res_irq |= SPORTSTER_INTE; /* IRQ On */
 177                         byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq);
 178                         inithscxisac(cs, 2);
 179                         spin_unlock_irqrestore(&cs->lock, flags);
 180                         return(0);
 181                 case CARD_TEST:
 182                         return(0);
 183         }
 184         return(0);
 185 }
 186
 187 static int __devinit
 188 get_io_range(struct IsdnCardState *cs)
 189 {
 190         int i, j, adr;
 191
 192         for (i=0;i<64;i++) {
 193                 adr = cs->hw.spt.cfg_reg + i *1024;
 194                 if (!request_region(adr, 8, "sportster")) {
 195                         printk(KERN_WARNING
 196                                 "HiSax: %s config port %x-%x already in use\n",
 197                                 CardType[cs->typ], adr, adr + 8);
 198                         break;
 199                 }
 200         }
 201         if (i==64)
 202                 return(1);
 203         else {
 204                 for (j=0; j<i; j++) {
 205                         adr = cs->hw.spt.cfg_reg + j *1024;
 206                         release_region(adr, 8);
 207                 }
 208                 return(0);
 209         }
 210 }
 211
 212 int __devinit
 213 setup_sportster(struct IsdnCard *card)
 214 {
 215         struct IsdnCardState *cs = card->cs;
 216         char tmp[64];
 217
 218         strcpy(tmp, sportster_revision);
 219         printk(KERN_INFO "HiSax: USR Sportster driver Rev. %s\n", HiSax_getrev(tmp));
 220         if (cs->typ != ISDN_CTYPE_SPORTSTER)
 221                 return (0);
 222
 223         cs->hw.spt.cfg_reg = card->para[1];
 224         cs->irq = card->para[0];
 225         if (!get_io_range(cs))
 226                 return (0);
 227         cs->hw.spt.isac = cs->hw.spt.cfg_reg + SPORTSTER_ISAC;
 228         cs->hw.spt.hscx[0] = cs->hw.spt.cfg_reg + SPORTSTER_HSCXA;
 229         cs->hw.spt.hscx[1] = cs->hw.spt.cfg_reg + SPORTSTER_HSCXB;
 230
 231         switch(cs->irq) {
 232                 case 5: cs->hw.spt.res_irq = 1;
 233                         break;
 234                 case 7: cs->hw.spt.res_irq = 2;
 235                         break;
 236                 case 10:cs->hw.spt.res_irq = 3;
 237                         break;
 238                 case 11:cs->hw.spt.res_irq = 4;
 239                         break;
 240                 case 12:cs->hw.spt.res_irq = 5;
 241                         break;
 242                 case 14:cs->hw.spt.res_irq = 6;
 243                         break;
 244                 case 15:cs->hw.spt.res_irq = 7;
 245                         break;
 246                 default:release_io_sportster(cs);
 247                         printk(KERN_WARNING "Sportster: wrong IRQ\n");
 248                         return(0);
 249         }
 250         printk(KERN_INFO "HiSax: %s config irq:%d cfg:0x%X\n",
 251                 CardType[cs->typ], cs->irq, cs->hw.spt.cfg_reg);
 252         setup_isac(cs);
 253         cs->readisac = &ReadISAC;
 254         cs->writeisac = &WriteISAC;
 255         cs->readisacfifo = &ReadISACfifo;
 256         cs->writeisacfifo = &WriteISACfifo;
 257         cs->BC_Read_Reg = &ReadHSCX;
 258         cs->BC_Write_Reg = &WriteHSCX;
 259         cs->BC_Send_Data = &hscx_fill_fifo;
 260         cs->cardmsg = &Sportster_card_msg;
 261         cs->irq_func = &sportster_interrupt;
 262         ISACVersion(cs, "Sportster:");
 263         if (HscxVersion(cs, "Sportster:")) {
 264                 printk(KERN_WARNING
 265                        "Sportster: wrong HSCX versions check IO address\n");
 266                 release_io_sportster(cs);
 267                 return (0);
 268         }
 269         return (1);
 270 }