1/* $Id: nj_s.c,v 1.1.1.1 2008/10/15 03:26:33 james26_jang 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 19const char *NETjet_S_revision = "$Revision: 1.1.1.1 $"; 20 21static u_char dummyrr(struct IsdnCardState *cs, int chan, u_char off) 22{ 23 return(5); 24} 25 26static void dummywr(struct IsdnCardState *cs, int chan, u_char off, u_char value) 27{ 28} 29 30static void 31netjet_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 98static void 99reset_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 122static int 123NETjet_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 inittiger(cs); 134 clear_pending_isac_ints(cs); 135 initisac(cs); 136 /* Reenable all IRQ */ 137 cs->writeisac(cs, ISAC_MASK, 0); 138 return(0); 139 case CARD_TEST: 140 return(0); 141 } 142 return(0); 143} 144 145static struct pci_dev *dev_netjet __initdata = NULL; 146 147int __init 148setup_netjet_s(struct IsdnCard *card) 149{ 150 int bytecnt; 151 struct IsdnCardState *cs = card->cs; 152 char tmp[64]; 153 long flags; 154 155#ifdef __BIG_ENDIAN 156#error "not running on big endian machines now" 157#endif 158 strcpy(tmp, NETjet_S_revision); 159 printk(KERN_INFO "HiSax: Traverse Tech. NETjet-S driver Rev. %s\n", HiSax_getrev(tmp)); 160 if (cs->typ != ISDN_CTYPE_NETJET_S) 161 return(0); 162 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); 163 164#if CONFIG_PCI 165 166 for ( ;; ) 167 { 168 if (!pci_present()) { 169 printk(KERN_ERR "Netjet: no PCI bus present\n"); 170 return(0); 171 } 172 if ((dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET, 173 PCI_DEVICE_ID_TIGERJET_300, dev_netjet))) { 174 if (pci_enable_device(dev_netjet)) 175 return(0); 176 pci_set_master(dev_netjet); 177 cs->irq = dev_netjet->irq; 178 if (!cs->irq) { 179 printk(KERN_WARNING "NETjet-S: No IRQ for PCI card found\n"); 180 return(0); 181 } 182 cs->hw.njet.base = pci_resource_start(dev_netjet, 0); 183 if (!cs->hw.njet.base) { 184 printk(KERN_WARNING "NETjet-S: No IO-Adr for PCI card found\n"); 185 return(0); 186 } 187 /* 2001/10/04 Christoph Ersfeld, Formula-n Europe AG www.formula-n.com */ 188 if ((dev_netjet->subsystem_vendor == 0x55) && 189 (dev_netjet->subsystem_device == 0x02)) { 190 printk(KERN_WARNING "Netjet: You tried to load this driver with an incompatible TigerJet-card\n"); 191 printk(KERN_WARNING "Use type=41 for Formula-n enter:now ISDN PCI and compatible\n"); 192 return(0); 193 } 194 /* end new code */ 195 } else { 196 printk(KERN_WARNING "NETjet-S: No PCI card found\n"); 197 return(0); 198 } 199 200 cs->hw.njet.auxa = cs->hw.njet.base + NETJET_AUXDATA; 201 cs->hw.njet.isac = cs->hw.njet.base | NETJET_ISAC_OFF; 202 203 save_flags(flags); 204 sti(); 205 206 cs->hw.njet.ctrl_reg = 0xff; /* Reset On */ 207 byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); 208 209 set_current_state(TASK_UNINTERRUPTIBLE); 210 schedule_timeout((10*HZ)/1000); /* Timeout 10ms */ 211 212 cs->hw.njet.ctrl_reg = 0x00; /* Reset Off and status read clear */ 213 byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); 214 215 set_current_state(TASK_UNINTERRUPTIBLE); 216 schedule_timeout((10*HZ)/1000); /* Timeout 10ms */ 217 218 restore_flags(flags); 219 220 cs->hw.njet.auxd = 0xC0; 221 cs->hw.njet.dmactrl = 0; 222 223 byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ); 224 byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ); 225 byteout(cs->hw.njet.auxa, cs->hw.njet.auxd); 226 227 switch ( ( ( NETjet_ReadIC( cs, ISAC_RBCH ) >> 5 ) & 3 ) ) 228 { 229 case 0 : 230 break; 231 232 case 3 : 233 printk( KERN_WARNING "NETjet-S: NETspider-U PCI card found\n" ); 234 continue; 235 236 default : 237 printk( KERN_WARNING "NETjet-S: No PCI card found\n" ); 238 return 0; 239 } 240 break; 241 } 242#else 243 244 printk(KERN_WARNING "NETjet-S: NO_PCI_BIOS\n"); 245 printk(KERN_WARNING "NETjet-S: unable to config NETJET-S PCI\n"); 246 return (0); 247 248#endif /* CONFIG_PCI */ 249 250 bytecnt = 256; 251 252 printk(KERN_INFO 253 "NETjet-S: PCI card configured at %#lx IRQ %d\n", 254 cs->hw.njet.base, cs->irq); 255 if (check_region(cs->hw.njet.base, bytecnt)) { 256 printk(KERN_WARNING 257 "HiSax: %s config port %#lx-%#lx already in use\n", 258 CardType[card->typ], 259 cs->hw.njet.base, 260 cs->hw.njet.base + bytecnt); 261 return (0); 262 } else { 263 request_region(cs->hw.njet.base, bytecnt, "netjet-s isdn"); 264 } 265 reset_netjet_s(cs); 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} 279