drivers/isdn/hisax/nj_s.c

   1 /* $Id: nj_s.c,v 1.1.4.1 2001/11/20 14:19:36 kai Exp $
   2  *
   3  * This software may be used and distributed according to the terms
   4  * of the GNU General Public License, incorporated herein by reference.
   5  *
   6  */
   7
   8 #define __NO_VERSION__
   9 #include <linux/config.h>
  10 #include <linux/init.h>
  11 #include "hisax.h"
  12 #include "isac.h"
  13 #include "isdnl1.h"
  14 #include <linux/pci.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/ppp_defs.h>
  17 #include "netjet.h"
  18
  19 const char *NETjet_S_revision = "$Revision: 1.1.4.1 $";
  20
  21 static u_char dummyrr(struct IsdnCardState *cs, int chan, u_char off)
  22 {
  23         return(5);
  24 }
  25
  26 static void dummywr(struct IsdnCardState *cs, int chan, u_char off, u_char value)
  27 {
  28 }
  29
  30 static void
  31 netjet_s_interrupt(int intno, void *dev_id, struct pt_regs *regs)
  32 {
  33         struct IsdnCardState *cs = dev_id;
  34         u_char val, sval;
  35         long flags;
  36
  37         if (!cs) {
  38                 printk(KERN_WARNING "NETjet-S: Spurious interrupt!\n");
  39                 return;
  40         }
  41         if (!((sval = bytein(cs->hw.njet.base + NETJET_IRQSTAT1)) &
  42                 NETJET_ISACIRQ)) {
  43                 val = NETjet_ReadIC(cs, ISAC_ISTA);
  44                 if (cs->debug & L1_DEB_ISAC)
  45                         debugl1(cs, "tiger: i1 %x %x", sval, val);
  46                 if (val) {
  47                         isac_interrupt(cs, val);
  48                         NETjet_WriteIC(cs, ISAC_MASK, 0xFF);
  49                         NETjet_WriteIC(cs, ISAC_MASK, 0x0);
  50                 }
  51         }
  52         save_flags(flags);
  53         cli();
  54         /* start new code 13/07/00 GE */
  55         /* set bits in sval to indicate which page is free */
  56         if (inl(cs->hw.njet.base + NETJET_DMA_WRITE_ADR) <
  57                 inl(cs->hw.njet.base + NETJET_DMA_WRITE_IRQ))
  58                 /* the 2nd write page is free */
  59                 sval = 0x08;
  60         else    /* the 1st write page is free */
  61                 sval = 0x04;
  62         if (inl(cs->hw.njet.base + NETJET_DMA_READ_ADR) <
  63                 inl(cs->hw.njet.base + NETJET_DMA_READ_IRQ))
  64                 /* the 2nd read page is free */
  65                 sval = sval | 0x02;
  66         else    /* the 1st read page is free */
  67                 sval = sval | 0x01;
  68         if (sval != cs->hw.njet.last_is0) /* we have a DMA interrupt */
  69         {
  70                 if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
  71                         restore_flags(flags);
  72                         return;
  73                 }
  74                 cs->hw.njet.irqstat0 = sval;
  75                 restore_flags(flags);
  76                 if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_READ) !=
  77                         (cs->hw.njet.last_is0 & NETJET_IRQM0_READ))
  78                         /* we have a read dma int */
  79                         read_tiger(cs);
  80                 if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_WRITE) !=
  81                         (cs->hw.njet.last_is0 & NETJET_IRQM0_WRITE))
  82                         /* we have a write dma int */
  83                         write_tiger(cs);
  84                 /* end new code 13/07/00 GE */
  85                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
  86         } else
  87                 restore_flags(flags);
  88
  89 /*      if (!testcnt--) {
  90                 cs->hw.njet.dmactrl = 0;
  91                 byteout(cs->hw.njet.base + NETJET_DMACTRL,
  92                         cs->hw.njet.dmactrl);
  93                 byteout(cs->hw.njet.base + NETJET_IRQMASK0, 0);
  94         }
  95 */
  96 }
  97
  98 static void
  99 reset_netjet_s(struct IsdnCardState *cs)
 100 {
 101         long flags;
 102
 103         save_flags(flags);
 104         sti();
 105         cs->hw.njet.ctrl_reg = 0xff;  /* Reset On */
 106         byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
 107         set_current_state(TASK_UNINTERRUPTIBLE);
 108         schedule_timeout((10*HZ)/1000); /* Timeout 10ms */
 109         cs->hw.njet.ctrl_reg = 0x40;  /* Reset Off and status read clear */
 110         /* now edge triggered for TJ320 GE 13/07/00 */
 111         byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
 112         set_current_state(TASK_UNINTERRUPTIBLE);
 113         schedule_timeout((10*HZ)/1000); /* Timeout 10ms */
 114         restore_flags(flags);
 115         cs->hw.njet.auxd = 0;
 116         cs->hw.njet.dmactrl = 0;
 117         byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ);
 118         byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ);
 119         byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);
 120 }
 121
 122 static int
 123 NETjet_S_card_msg(struct IsdnCardState *cs, int mt, void *arg)
 124 {
 125         switch (mt) {
 126                 case CARD_RESET:
 127                         reset_netjet_s(cs);
 128                         return(0);
 129                 case CARD_RELEASE:
 130                         release_io_netjet(cs);
 131                         return(0);
 132                 case CARD_INIT:
 133                         reset_netjet_s(cs);
 134                         inittiger(cs);
 135                         clear_pending_isac_ints(cs);
 136                         initisac(cs);
 137                         /* Reenable all IRQ */
 138                         cs->writeisac(cs, ISAC_MASK, 0);
 139                         return(0);
 140                 case CARD_TEST:
 141                         return(0);
 142         }
 143         return(0);
 144 }
 145
 146 static struct pci_dev *dev_netjet __initdata = NULL;
 147
 148 int __init
 149 setup_netjet_s(struct IsdnCard *card)
 150 {
 151         int bytecnt;
 152         struct IsdnCardState *cs = card->cs;
 153         char tmp[64];
 154         long flags;
 155
 156 #ifdef __BIG_ENDIAN
 157 #error "not running on big endian machines now"
 158 #endif
 159         strcpy(tmp, NETjet_S_revision);
 160         printk(KERN_INFO "HiSax: Traverse Tech. NETjet-S driver Rev. %s\n", HiSax_getrev(tmp));
 161         if (cs->typ != ISDN_CTYPE_NETJET_S)
 162                 return(0);
 163         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 164
 165 #if CONFIG_PCI
 166
 167         for ( ;; )
 168         {
 169                 if (!pci_present()) {
 170                         printk(KERN_ERR "Netjet: no PCI bus present\n");
 171                         return(0);
 172                 }
 173                 if ((dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET,
 174                         PCI_DEVICE_ID_TIGERJET_300,  dev_netjet))) {
 175                         if (pci_enable_device(dev_netjet))
 176                                 return(0);
 177                         pci_set_master(dev_netjet);
 178                         cs->irq = dev_netjet->irq;
 179                         if (!cs->irq) {
 180                                 printk(KERN_WARNING "NETjet-S: No IRQ for PCI card found\n");
 181                                 return(0);
 182                         }
 183                         cs->hw.njet.base = pci_resource_start(dev_netjet, 0);
 184                         if (!cs->hw.njet.base) {
 185                                 printk(KERN_WARNING "NETjet-S: No IO-Adr for PCI card found\n");
 186                                 return(0);
 187                         }
 188                         /* 2001/10/04 Christoph Ersfeld, Formula-n Europe AG www.formula-n.com */
 189                         if ((dev_netjet->subsystem_vendor == 0x55) &&
 190                                 (dev_netjet->subsystem_device == 0x02)) {
 191                                 printk(KERN_WARNING "Netjet: You tried to load this driver with an incompatible TigerJet-card\n");
 192                                 printk(KERN_WARNING "Use type=41 for Formula-n enter:now ISDN PCI and compatible\n");
 193                                 return(0);
 194                         }
 195                         /* end new code */
 196                 } else {
 197                         printk(KERN_WARNING "NETjet-S: No PCI card found\n");
 198                         return(0);
 199                 }
 200
 201                 cs->hw.njet.auxa = cs->hw.njet.base + NETJET_AUXDATA;
 202                 cs->hw.njet.isac = cs->hw.njet.base | NETJET_ISAC_OFF;
 203
 204                 save_flags(flags);
 205                 sti();
 206
 207                 cs->hw.njet.ctrl_reg = 0xff;  /* Reset On */
 208                 byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
 209
 210                 set_current_state(TASK_UNINTERRUPTIBLE);
 211                 schedule_timeout((10*HZ)/1000); /* Timeout 10ms */
 212
 213                 cs->hw.njet.ctrl_reg = 0x00;  /* Reset Off and status read clear */
 214                 byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
 215
 216                 set_current_state(TASK_UNINTERRUPTIBLE);
 217                 schedule_timeout((10*HZ)/1000); /* Timeout 10ms */
 218
 219                 restore_flags(flags);
 220
 221                 cs->hw.njet.auxd = 0xC0;
 222                 cs->hw.njet.dmactrl = 0;
 223
 224                 byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ);
 225                 byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ);
 226                 byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);
 227
 228                 switch ( ( ( NETjet_ReadIC( cs, ISAC_RBCH ) >> 5 ) & 3 ) )
 229                 {
 230                         case 0 :
 231                                 break;
 232
 233                         case 3 :
 234                                 printk( KERN_WARNING "NETjet-S: NETspider-U PCI card found\n" );
 235                                 continue;
 236
 237                         default :
 238                                 printk( KERN_WARNING "NETjet-S: No PCI card found\n" );
 239                                 return 0;
 240                 }
 241                 break;
 242         }
 243 #else
 244
 245         printk(KERN_WARNING "NETjet-S: NO_PCI_BIOS\n");
 246         printk(KERN_WARNING "NETjet-S: unable to config NETJET-S PCI\n");
 247         return (0);
 248
 249 #endif /* CONFIG_PCI */
 250
 251         bytecnt = 256;
 252
 253         printk(KERN_INFO
 254                 "NETjet-S: PCI card configured at %#lx IRQ %d\n",
 255                 cs->hw.njet.base, cs->irq);
 256         if (check_region(cs->hw.njet.base, bytecnt)) {
 257                 printk(KERN_WARNING
 258                        "HiSax: %s config port %#lx-%#lx already in use\n",
 259                        CardType[card->typ],
 260                        cs->hw.njet.base,
 261                        cs->hw.njet.base + bytecnt);
 262                 return (0);
 263         } else {
 264                 request_region(cs->hw.njet.base, bytecnt, "netjet-s isdn");
 265         }
 266         cs->readisac  = &NETjet_ReadIC;
 267         cs->writeisac = &NETjet_WriteIC;
 268         cs->readisacfifo  = &NETjet_ReadICfifo;
 269         cs->writeisacfifo = &NETjet_WriteICfifo;
 270         cs->BC_Read_Reg  = &dummyrr;
 271         cs->BC_Write_Reg = &dummywr;
 272         cs->BC_Send_Data = &netjet_fill_dma;
 273         cs->cardmsg = &NETjet_S_card_msg;
 274         cs->irq_func = &netjet_s_interrupt;
 275         cs->irq_flags |= SA_SHIRQ;
 276         ISACVersion(cs, "NETjet-S:");
 277         return (1);
 278 }