drivers/isdn/hisax/nj_s.c

   1 // $Id: nj_s.c,v 2.7.6.1 2000/11/29 16:00:14 kai Exp $
   2 //
   3 // This file is (c) under GNU PUBLIC LICENSE
   4 //
   5
   6 #define __NO_VERSION__
   7 #include <linux/config.h>
   8 #include <linux/init.h>
   9 #include "hisax.h"
  10 #include "isac.h"
  11 #include "isdnl1.h"
  12 #include <linux/pci.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/ppp_defs.h>
  15 #include "netjet.h"
  16
  17 const char *NETjet_S_revision = "$Revision: 2.7.6.1 $";
  18
  19 static u_char dummyrr(struct IsdnCardState *cs, int chan, u_char off)
  20 {
  21         return(5);
  22 }
  23
  24 static void dummywr(struct IsdnCardState *cs, int chan, u_char off, u_char value)
  25 {
  26 }
  27
  28 static void
  29 netjet_s_interrupt(int intno, void *dev_id, struct pt_regs *regs)
  30 {
  31         struct IsdnCardState *cs = dev_id;
  32         u_char val, sval;
  33         long flags;
  34
  35         if (!cs) {
  36                 printk(KERN_WARNING "NETjet-S: Spurious interrupt!\n");
  37                 return;
  38         }
  39         if (!((sval = bytein(cs->hw.njet.base + NETJET_IRQSTAT1)) &
  40                 NETJET_ISACIRQ)) {
  41                 val = NETjet_ReadIC(cs, ISAC_ISTA);
  42                 if (cs->debug & L1_DEB_ISAC)
  43                         debugl1(cs, "tiger: i1 %x %x", sval, val);
  44                 if (val) {
  45                         isac_interrupt(cs, val);
  46                         NETjet_WriteIC(cs, ISAC_MASK, 0xFF);
  47                         NETjet_WriteIC(cs, ISAC_MASK, 0x0);
  48                 }
  49         }
  50         save_flags(flags);
  51         cli();
  52         /* start new code 13/07/00 GE */
  53         /* set bits in sval to indicate which page is free */
  54         if (inl(cs->hw.njet.base + NETJET_DMA_WRITE_ADR) <
  55                 inl(cs->hw.njet.base + NETJET_DMA_WRITE_IRQ))
  56                 /* the 2nd write page is free */
  57                 sval = 0x08;
  58         else    /* the 1st write page is free */
  59                 sval = 0x04;
  60         if (inl(cs->hw.njet.base + NETJET_DMA_READ_ADR) <
  61                 inl(cs->hw.njet.base + NETJET_DMA_READ_IRQ))
  62                 /* the 2nd read page is free */
  63                 sval = sval | 0x02;
  64         else    /* the 1st read page is free */
  65                 sval = sval | 0x01;
  66         if (sval != cs->hw.njet.last_is0) /* we have a DMA interrupt */
  67         {
  68                 if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
  69                         restore_flags(flags);
  70                         return;
  71                 }
  72                 cs->hw.njet.irqstat0 = sval;
  73                 restore_flags(flags);
  74                 if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_READ) !=
  75                         (cs->hw.njet.last_is0 & NETJET_IRQM0_READ))
  76                         /* we have a read dma int */
  77                         read_tiger(cs);
  78                 if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_WRITE) !=
  79                         (cs->hw.njet.last_is0 & NETJET_IRQM0_WRITE))
  80                         /* we have a write dma int */
  81                         write_tiger(cs);
  82                 /* end new code 13/07/00 GE */
  83                 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
  84         } else
  85                 restore_flags(flags);
  86
  87 /*      if (!testcnt--) {
  88                 cs->hw.njet.dmactrl = 0;
  89                 byteout(cs->hw.njet.base + NETJET_DMACTRL,
  90                         cs->hw.njet.dmactrl);
  91                 byteout(cs->hw.njet.base + NETJET_IRQMASK0, 0);
  92         }
  93 */
  94 }
  95
  96 static void
  97 reset_netjet_s(struct IsdnCardState *cs)
  98 {
  99         long flags;
 100
 101         save_flags(flags);
 102         sti();
 103         cs->hw.njet.ctrl_reg = 0xff;  /* Reset On */
 104         byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
 105         set_current_state(TASK_UNINTERRUPTIBLE);
 106         schedule_timeout((10*HZ)/1000); /* Timeout 10ms */
 107         cs->hw.njet.ctrl_reg = 0x40;  /* Reset Off and status read clear */
 108         /* now edge triggered for TJ320 GE 13/07/00 */
 109         byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
 110         set_current_state(TASK_UNINTERRUPTIBLE);
 111         schedule_timeout((10*HZ)/1000); /* Timeout 10ms */
 112         restore_flags(flags);
 113         cs->hw.njet.auxd = 0;
 114         cs->hw.njet.dmactrl = 0;
 115         byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ);
 116         byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ);
 117         byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);
 118 }
 119
 120 static int
 121 NETjet_S_card_msg(struct IsdnCardState *cs, int mt, void *arg)
 122 {
 123         switch (mt) {
 124                 case CARD_RESET:
 125                         reset_netjet_s(cs);
 126                         return(0);
 127                 case CARD_RELEASE:
 128                         release_io_netjet(cs);
 129                         return(0);
 130                 case CARD_INIT:
 131                         inittiger(cs);
 132                         clear_pending_isac_ints(cs);
 133                         initisac(cs);
 134                         /* Reenable all IRQ */
 135                         cs->writeisac(cs, ISAC_MASK, 0);
 136                         return(0);
 137                 case CARD_TEST:
 138                         return(0);
 139         }
 140         return(0);
 141 }
 142
 143 static struct pci_dev *dev_netjet __initdata = NULL;
 144
 145 int __init
 146 setup_netjet_s(struct IsdnCard *card)
 147 {
 148         int bytecnt;
 149         struct IsdnCardState *cs = card->cs;
 150         char tmp[64];
 151         long flags;
 152
 153 #ifdef __BIG_ENDIAN
 154 #error "not running on big endian machines now"
 155 #endif
 156         strcpy(tmp, NETjet_S_revision);
 157         printk(KERN_INFO "HiSax: Traverse Tech. NETjet-S driver Rev. %s\n", HiSax_getrev(tmp));
 158         if (cs->typ != ISDN_CTYPE_NETJET_S)
 159                 return(0);
 160         test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 161
 162 #if CONFIG_PCI
 163
 164         for ( ;; )
 165         {
 166                 if (!pci_present()) {
 167                         printk(KERN_ERR "Netjet: no PCI bus present\n");
 168                         return(0);
 169                 }
 170                 if ((dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET,
 171                         PCI_DEVICE_ID_TIGERJET_300,  dev_netjet))) {
 172                         if (pci_enable_device(dev_netjet))
 173                                 return(0);
 174                         cs->irq = dev_netjet->irq;
 175                         if (!cs->irq) {
 176                                 printk(KERN_WARNING "NETjet-S: No IRQ for PCI card found\n");
 177                                 return(0);
 178                         }
 179                         cs->hw.njet.base = pci_resource_start(dev_netjet, 0);
 180                         if (!cs->hw.njet.base) {
 181                                 printk(KERN_WARNING "NETjet-S: No IO-Adr for PCI card found\n");
 182                                 return(0);
 183                         }
 184                 } else {
 185                         printk(KERN_WARNING "NETjet-S: No PCI card found\n");
 186                         return(0);
 187                 }
 188
 189                 cs->hw.njet.auxa = cs->hw.njet.base + NETJET_AUXDATA;
 190                 cs->hw.njet.isac = cs->hw.njet.base | NETJET_ISAC_OFF;
 191
 192                 save_flags(flags);
 193                 sti();
 194
 195                 cs->hw.njet.ctrl_reg = 0xff;  /* Reset On */
 196                 byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
 197
 198                 set_current_state(TASK_UNINTERRUPTIBLE);
 199                 schedule_timeout((10*HZ)/1000); /* Timeout 10ms */
 200
 201                 cs->hw.njet.ctrl_reg = 0x00;  /* Reset Off and status read clear */
 202                 byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
 203
 204                 set_current_state(TASK_UNINTERRUPTIBLE);
 205                 schedule_timeout((10*HZ)/1000); /* Timeout 10ms */
 206
 207                 restore_flags(flags);
 208
 209                 cs->hw.njet.auxd = 0xC0;
 210                 cs->hw.njet.dmactrl = 0;
 211
 212                 byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ);
 213                 byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ);
 214                 byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);
 215
 216                 switch ( ( ( NETjet_ReadIC( cs, ISAC_RBCH ) >> 5 ) & 3 ) )
 217                 {
 218                         case 0 :
 219                                 break;
 220
 221                         case 3 :
 222                                 printk( KERN_WARNING "NETjet-S: NETspider-U PCI card found\n" );
 223                                 continue;
 224
 225                         default :
 226                                 printk( KERN_WARNING "NETjet-S: No PCI card found\n" );
 227                                 return 0;
 228                 }
 229                 break;
 230         }
 231 #else
 232
 233         printk(KERN_WARNING "NETjet-S: NO_PCI_BIOS\n");
 234         printk(KERN_WARNING "NETjet-S: unable to config NETJET-S PCI\n");
 235         return (0);
 236
 237 #endif /* CONFIG_PCI */
 238
 239         bytecnt = 256;
 240
 241         printk(KERN_INFO
 242                 "NETjet-S: PCI card configured at 0x%x IRQ %d\n",
 243                 cs->hw.njet.base, cs->irq);
 244         if (check_region(cs->hw.njet.base, bytecnt)) {
 245                 printk(KERN_WARNING
 246                        "HiSax: %s config port %x-%x already in use\n",
 247                        CardType[card->typ],
 248                        cs->hw.njet.base,
 249                        cs->hw.njet.base + bytecnt);
 250                 return (0);
 251         } else {
 252                 request_region(cs->hw.njet.base, bytecnt, "netjet-s isdn");
 253         }
 254         reset_netjet_s(cs);
 255         cs->readisac  = &NETjet_ReadIC;
 256         cs->writeisac = &NETjet_WriteIC;
 257         cs->readisacfifo  = &NETjet_ReadICfifo;
 258         cs->writeisacfifo = &NETjet_WriteICfifo;
 259         cs->BC_Read_Reg  = &dummyrr;
 260         cs->BC_Write_Reg = &dummywr;
 261         cs->BC_Send_Data = &netjet_fill_dma;
 262         cs->cardmsg = &NETjet_S_card_msg;
 263         cs->irq_func = &netjet_s_interrupt;
 264         cs->irq_flags |= SA_SHIRQ;
 265         ISACVersion(cs, "NETjet-S:");
 266         return (1);
 267 }