drivers/isdn/hisax/nj_s.c

   1 // $Id: nj_s.c,v 2.3 2000/06/26 08:59:14 keil Exp $
   2 //
   3 // This file is (c) under GNU PUBLIC LICENSE
   4 //
   5 #define __NO_VERSION__
   6 #include <linux/config.h>
   7 #include "hisax.h"
   8 #include "isac.h"
   9 #include "isdnl1.h"
  10 #include <linux/pci.h>
  11 #include <linux/interrupt.h>
  12 #include <linux/ppp_defs.h>
  13 #include "netjet.h"
  14
  15 const char *NETjet_S_revision = "$Revision: 2.3 $";
  16
  17 static u_char dummyrr(struct IsdnCardState *cs, int chan, u_char off)
  18 {
  19         return(5);
  20 }
  21
  22 static void dummywr(struct IsdnCardState *cs, int chan, u_char off, u_char value)
  23 {
  24 }
  25
  26 static void
  27 netjet_s_interrupt(int intno, void *dev_id, struct pt_regs *regs)
  28 {
  29         struct IsdnCardState *cs = dev_id;
  30         u_char val, sval;
  31         long flags;
  32
  33         if (!cs) {
  34                 printk(KERN_WARNING "NETjet-S: Spurious interrupt!\n");
  35                 return;
  36         }
  37         if (!((sval = bytein(cs->hw.njet.base + NETJET_IRQSTAT1)) &
  38                 NETJET_ISACIRQ)) {
  39                 val = NETjet_ReadIC(cs, ISAC_ISTA);
  40                 if (cs->debug & L1_DEB_ISAC)
  41                         debugl1(cs, "tiger: i1 %x %x", sval, val);
  42                 if (val) {
  43                         isac_interrupt(cs, val);
  44                         NETjet_WriteIC(cs, ISAC_MASK, 0xFF);
  45                         NETjet_WriteIC(cs, ISAC_MASK, 0x0);
  46                 }
  47         }
  48         save_flags(flags);
  49         cli();
  50         if ((sval = bytein(cs->hw.njet.base + NETJET_IRQSTAT0))) {
  51                 if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
  52                         restore_flags(flags);
  53                         return;
  54                 }
  55                 cs->hw.njet.irqstat0 = sval;
  56                 restore_flags(flags);
  57 /*              debugl1(cs, "tiger: ist0 %x  %x %x  %x/%x  pulse=%d",
  58                         sval,
  59                         bytein(cs->hw.njet.base + NETJET_DMACTRL),
  60                         bytein(cs->hw.njet.base + NETJET_IRQMASK0),
  61                         inl(cs->hw.njet.base + NETJET_DMA_READ_ADR),
  62                         inl(cs->hw.njet.base + NETJET_DMA_WRITE_ADR),
  63                         bytein(cs->hw.njet.base + NETJET_PULSE_CNT));
  64 */
  65 /*              cs->hw.njet.irqmask0 = ((0x0f & cs->hw.njet.irqstat0) ^ 0x0f) | 0x30;
  66 */              byteout(cs->hw.njet.base + NETJET_IRQSTAT0, cs->hw.njet.irqstat0);
  67 /*              byteout(cs->hw.njet.base + NETJET_IRQMASK0, cs->hw.njet.irqmask0);
  68 */              if (cs->hw.njet.irqstat0 & NETJET_IRQM0_READ)
  69                         read_tiger(cs);
  70                 if (cs->hw.njet.irqstat0 & NETJET_IRQM0_WRITE)
  71                         write_tiger(cs);
  72                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
  73         } else
  74                 restore_flags(flags);
  75
  76 /*      if (!testcnt--) {
  77                 cs->hw.njet.dmactrl = 0;
  78                 byteout(cs->hw.njet.base + NETJET_DMACTRL,
  79                         cs->hw.njet.dmactrl);
  80                 byteout(cs->hw.njet.base + NETJET_IRQMASK0, 0);
  81         }
  82 */
  83 }
  84
  85 static void
  86 reset_netjet_s(struct IsdnCardState *cs)
  87 {
  88         long flags;
  89
  90         save_flags(flags);
  91         sti();
  92         cs->hw.njet.ctrl_reg = 0xff;  /* Reset On */
  93         byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
  94         set_current_state(TASK_UNINTERRUPTIBLE);
  95         schedule_timeout((10*HZ)/1000); /* Timeout 10ms */
  96         cs->hw.njet.ctrl_reg = 0x00;  /* Reset Off and status read clear */
  97         byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
  98         set_current_state(TASK_UNINTERRUPTIBLE);
  99         schedule_timeout((10*HZ)/1000); /* Timeout 10ms */
 100         restore_flags(flags);
 101         cs->hw.njet.auxd = 0;
 102         cs->hw.njet.dmactrl = 0;
 103         byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ);
 104         byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ);
 105         byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);
 106 }
 107
 108 static int
 109 NETjet_S_card_msg(struct IsdnCardState *cs, int mt, void *arg)
 110 {
 111         switch (mt) {
 112                 case CARD_RESET:
 113                         reset_netjet_s(cs);
 114                         return(0);
 115                 case CARD_RELEASE:
 116                         release_io_netjet(cs);
 117                         return(0);
 118                 case CARD_INIT:
 119                         inittiger(cs);
 120                         clear_pending_isac_ints(cs);
 121                         initisac(cs);
 122                         /* Reenable all IRQ */
 123                         cs->writeisac(cs, ISAC_MASK, 0);
 124                         return(0);
 125                 case CARD_TEST:
 126                         return(0);
 127         }
 128         return(0);
 129 }
 130
 131 static  struct pci_dev *dev_netjet __initdata = NULL;
 132
 133 __initfunc(int
 134 setup_netjet_s(struct IsdnCard *card))
 135 {
 136         int bytecnt;
 137         struct IsdnCardState *cs = card->cs;
 138         char tmp[64];
 139         long flags;
 140 #if CONFIG_PCI
 141 #endif
 142 #ifdef __BIG_ENDIAN
 143 #error "not running on big endian machines now"
 144 #endif
 145         strcpy(tmp, NETjet_S_revision);
 146         printk(KERN_INFO "HiSax: Traverse Tech. NETjet-S driver Rev. %s\n", HiSax_getrev(tmp));
 147         if (cs->typ != ISDN_CTYPE_NETJET_S)
 148                 return(0);
 149         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 150
 151         for ( ;; )
 152         {
 153
 154 #if CONFIG_PCI
 155
 156                 if (!pci_present()) {
 157                         printk(KERN_ERR "Netjet: no PCI bus present\n");
 158                         return(0);
 159                 }
 160                 if ((dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET,
 161                         PCI_DEVICE_ID_TIGERJET_300,  dev_netjet))) {
 162                         if (pci_enable_device(dev_netjet))
 163                                 return(0);
 164                         cs->irq = dev_netjet->irq;
 165                         if (!cs->irq) {
 166                                 printk(KERN_WARNING "NETjet-S: No IRQ for PCI card found\n");
 167                                 return(0);
 168                         }
 169                         cs->hw.njet.base = pci_resource_start(dev_netjet, 0);
 170                         if (!cs->hw.njet.base) {
 171                                 printk(KERN_WARNING "NETjet-S: No IO-Adr for PCI card found\n");
 172                                 return(0);
 173                         }
 174                 } else {
 175                         printk(KERN_WARNING "NETjet-S: No PCI card found\n");
 176                         return(0);
 177                 }
 178
 179                 cs->hw.njet.auxa = cs->hw.njet.base + NETJET_AUXDATA;
 180                 cs->hw.njet.isac = cs->hw.njet.base | NETJET_ISAC_OFF;
 181
 182                 save_flags(flags);
 183                 sti();
 184
 185                 cs->hw.njet.ctrl_reg = 0xff;  /* Reset On */
 186                 byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
 187
 188                 set_current_state(TASK_UNINTERRUPTIBLE);
 189                 schedule_timeout((10*HZ)/1000); /* Timeout 10ms */
 190
 191                 cs->hw.njet.ctrl_reg = 0x00;  /* Reset Off and status read clear */
 192                 byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
 193
 194                 set_current_state(TASK_UNINTERRUPTIBLE);
 195                 schedule_timeout((10*HZ)/1000); /* Timeout 10ms */
 196
 197                 restore_flags(flags);
 198
 199                 cs->hw.njet.auxd = 0xC0;
 200                 cs->hw.njet.dmactrl = 0;
 201
 202                 byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ);
 203                 byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ);
 204                 byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);
 205
 206                 switch ( ( ( NETjet_ReadIC( cs, ISAC_RBCH ) >> 5 ) & 3 ) )
 207                 {
 208                         case 0 :
 209                                 break;
 210
 211                         case 3 :
 212                                 printk( KERN_WARNING "NETjet-S: NETspider-U PCI card found\n" );
 213                                 continue;
 214
 215                         default :
 216                                 printk( KERN_WARNING "NETjet-S: No PCI card found\n" );
 217                                 return 0;
 218                 }
 219                 break;
 220         }
 221 #else
 222
 223         printk(KERN_WARNING "NETjet-S: NO_PCI_BIOS\n");
 224         printk(KERN_WARNING "NETjet-S: unable to config NETJET-S PCI\n");
 225         return (0);
 226
 227 #endif /* CONFIG_PCI */
 228
 229         bytecnt = 256;
 230
 231         printk(KERN_INFO
 232                 "NETjet-S: PCI card configured at 0x%x IRQ %d\n",
 233                 cs->hw.njet.base, cs->irq);
 234         if (check_region(cs->hw.njet.base, bytecnt)) {
 235                 printk(KERN_WARNING
 236                        "HiSax: %s config port %x-%x already in use\n",
 237                        CardType[card->typ],
 238                        cs->hw.njet.base,
 239                        cs->hw.njet.base + bytecnt);
 240                 return (0);
 241         } else {
 242                 request_region(cs->hw.njet.base, bytecnt, "netjet-s isdn");
 243         }
 244         reset_netjet_s(cs);
 245         cs->readisac  = &NETjet_ReadIC;
 246         cs->writeisac = &NETjet_WriteIC;
 247         cs->readisacfifo  = &NETjet_ReadICfifo;
 248         cs->writeisacfifo = &NETjet_WriteICfifo;
 249         cs->BC_Read_Reg  = &dummyrr;
 250         cs->BC_Write_Reg = &dummywr;
 251         cs->BC_Send_Data = &netjet_fill_dma;
 252         cs->cardmsg = &NETjet_S_card_msg;
 253         cs->irq_func = &netjet_s_interrupt;
 254         cs->irq_flags |= SA_SHIRQ;
 255         ISACVersion(cs, "NETjet-S:");
 256         return (1);
 257 }