nj_u.c revision 672c3fd9069e5a138f9d4afc9aeb5aa34aacce32
1/* $Id: nj_u.c,v 2.14.2.3 2004/01/13 14:31:26 keil 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#include <linux/config.h> 9#include <linux/init.h> 10#include "hisax.h" 11#include "icc.h" 12#include "isdnl1.h" 13#include <linux/pci.h> 14#include <linux/interrupt.h> 15#include <linux/ppp_defs.h> 16#include "netjet.h" 17 18static const char *NETjet_U_revision = "$Revision: 2.14.2.3 $"; 19 20static u_char dummyrr(struct IsdnCardState *cs, int chan, u_char off) 21{ 22 return(5); 23} 24 25static void dummywr(struct IsdnCardState *cs, int chan, u_char off, u_char value) 26{ 27} 28 29static irqreturn_t 30netjet_u_interrupt(int intno, void *dev_id, struct pt_regs *regs) 31{ 32 struct IsdnCardState *cs = dev_id; 33 u_char val, sval; 34 u_long flags; 35 36 spin_lock_irqsave(&cs->lock, flags); 37 if (!((sval = bytein(cs->hw.njet.base + NETJET_IRQSTAT1)) & 38 NETJET_ISACIRQ)) { 39 val = NETjet_ReadIC(cs, ICC_ISTA); 40 if (cs->debug & L1_DEB_ISAC) 41 debugl1(cs, "tiger: i1 %x %x", sval, val); 42 if (val) { 43 icc_interrupt(cs, val); 44 NETjet_WriteIC(cs, ICC_MASK, 0xFF); 45 NETjet_WriteIC(cs, ICC_MASK, 0x0); 46 } 47 } 48 /* start new code 13/07/00 GE */ 49 /* set bits in sval to indicate which page is free */ 50 if (inl(cs->hw.njet.base + NETJET_DMA_WRITE_ADR) < 51 inl(cs->hw.njet.base + NETJET_DMA_WRITE_IRQ)) 52 /* the 2nd write page is free */ 53 sval = 0x08; 54 else /* the 1st write page is free */ 55 sval = 0x04; 56 if (inl(cs->hw.njet.base + NETJET_DMA_READ_ADR) < 57 inl(cs->hw.njet.base + NETJET_DMA_READ_IRQ)) 58 /* the 2nd read page is free */ 59 sval = sval | 0x02; 60 else /* the 1st read page is free */ 61 sval = sval | 0x01; 62 if (sval != cs->hw.njet.last_is0) /* we have a DMA interrupt */ 63 { 64 if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { 65 spin_unlock_irqrestore(&cs->lock, flags); 66 return IRQ_HANDLED; 67 } 68 cs->hw.njet.irqstat0 = sval; 69 if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_READ) != 70 (cs->hw.njet.last_is0 & NETJET_IRQM0_READ)) 71 /* we have a read dma int */ 72 read_tiger(cs); 73 if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_WRITE) != 74 (cs->hw.njet.last_is0 & NETJET_IRQM0_WRITE)) 75 /* we have a write dma int */ 76 write_tiger(cs); 77 /* end new code 13/07/00 GE */ 78 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); 79 } 80 spin_unlock_irqrestore(&cs->lock, flags); 81 return IRQ_HANDLED; 82} 83 84static void 85reset_netjet_u(struct IsdnCardState *cs) 86{ 87 cs->hw.njet.ctrl_reg = 0xff; /* Reset On */ 88 byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); 89 mdelay(10); 90 cs->hw.njet.ctrl_reg = 0x40; /* Reset Off and status read clear */ 91 /* now edge triggered for TJ320 GE 13/07/00 */ 92 byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); 93 mdelay(10); 94 cs->hw.njet.auxd = 0xC0; 95 cs->hw.njet.dmactrl = 0; 96 byteout(cs->hw.njet.auxa, 0); 97 byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ); 98 byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ); 99 byteout(cs->hw.njet.auxa, cs->hw.njet.auxd); 100} 101 102static int 103NETjet_U_card_msg(struct IsdnCardState *cs, int mt, void *arg) 104{ 105 u_long flags; 106 107 switch (mt) { 108 case CARD_RESET: 109 spin_lock_irqsave(&cs->lock, flags); 110 reset_netjet_u(cs); 111 spin_unlock_irqrestore(&cs->lock, flags); 112 return(0); 113 case CARD_RELEASE: 114 release_io_netjet(cs); 115 return(0); 116 case CARD_INIT: 117 spin_lock_irqsave(&cs->lock, flags); 118 inittiger(cs); 119 reset_netjet_u(cs); 120 clear_pending_icc_ints(cs); 121 initicc(cs); 122 /* Reenable all IRQ */ 123 cs->writeisac(cs, ICC_MASK, 0); 124 spin_unlock_irqrestore(&cs->lock, flags); 125 return(0); 126 case CARD_TEST: 127 return(0); 128 } 129 return(0); 130} 131 132static struct pci_dev *dev_netjet __initdata = NULL; 133 134int __init 135setup_netjet_u(struct IsdnCard *card) 136{ 137 int bytecnt; 138 struct IsdnCardState *cs = card->cs; 139 char tmp[64]; 140#ifdef CONFIG_PCI 141#endif 142#ifdef __BIG_ENDIAN 143#error "not running on big endian machines now" 144#endif 145 strcpy(tmp, NETjet_U_revision); 146 printk(KERN_INFO "HiSax: Traverse Tech. NETspider-U driver Rev. %s\n", HiSax_getrev(tmp)); 147 if (cs->typ != ISDN_CTYPE_NETJET_U) 148 return(0); 149 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); 150 151#ifdef CONFIG_PCI 152 153 for ( ;; ) 154 { 155 if ((dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET, 156 PCI_DEVICE_ID_TIGERJET_300, dev_netjet))) { 157 if (pci_enable_device(dev_netjet)) 158 return(0); 159 pci_set_master(dev_netjet); 160 cs->irq = dev_netjet->irq; 161 if (!cs->irq) { 162 printk(KERN_WARNING "NETspider-U: No IRQ for PCI card found\n"); 163 return(0); 164 } 165 cs->hw.njet.base = pci_resource_start(dev_netjet, 0); 166 if (!cs->hw.njet.base) { 167 printk(KERN_WARNING "NETspider-U: No IO-Adr for PCI card found\n"); 168 return(0); 169 } 170 } else { 171 printk(KERN_WARNING "NETspider-U: No PCI card found\n"); 172 return(0); 173 } 174 175 cs->hw.njet.auxa = cs->hw.njet.base + NETJET_AUXDATA; 176 cs->hw.njet.isac = cs->hw.njet.base | NETJET_ISAC_OFF; 177 mdelay(10); 178 179 cs->hw.njet.ctrl_reg = 0xff; /* Reset On */ 180 byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); 181 mdelay(10); 182 183 cs->hw.njet.ctrl_reg = 0x00; /* Reset Off and status read clear */ 184 byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); 185 mdelay(10); 186 187 cs->hw.njet.auxd = 0xC0; 188 cs->hw.njet.dmactrl = 0; 189 190 byteout(cs->hw.njet.auxa, 0); 191 byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ); 192 byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ); 193 byteout(cs->hw.njet.auxa, cs->hw.njet.auxd); 194 195 switch ( ( ( NETjet_ReadIC( cs, ICC_RBCH ) >> 5 ) & 3 ) ) 196 { 197 case 3 : 198 break; 199 200 case 0 : 201 printk( KERN_WARNING "NETspider-U: NETjet-S PCI card found\n" ); 202 continue; 203 204 default : 205 printk( KERN_WARNING "NETspider-U: No PCI card found\n" ); 206 return 0; 207 } 208 break; 209 } 210#else 211 212 printk(KERN_WARNING "NETspider-U: NO_PCI_BIOS\n"); 213 printk(KERN_WARNING "NETspider-U: unable to config NETspider-U PCI\n"); 214 return (0); 215 216#endif /* CONFIG_PCI */ 217 218 bytecnt = 256; 219 220 printk(KERN_INFO 221 "NETspider-U: PCI card configured at %#lx IRQ %d\n", 222 cs->hw.njet.base, cs->irq); 223 if (!request_region(cs->hw.njet.base, bytecnt, "netspider-u isdn")) { 224 printk(KERN_WARNING 225 "HiSax: %s config port %#lx-%#lx already in use\n", 226 CardType[card->typ], 227 cs->hw.njet.base, 228 cs->hw.njet.base + bytecnt); 229 return (0); 230 } 231 setup_icc(cs); 232 cs->readisac = &NETjet_ReadIC; 233 cs->writeisac = &NETjet_WriteIC; 234 cs->readisacfifo = &NETjet_ReadICfifo; 235 cs->writeisacfifo = &NETjet_WriteICfifo; 236 cs->BC_Read_Reg = &dummyrr; 237 cs->BC_Write_Reg = &dummywr; 238 cs->BC_Send_Data = &netjet_fill_dma; 239 cs->cardmsg = &NETjet_U_card_msg; 240 cs->irq_func = &netjet_u_interrupt; 241 cs->irq_flags |= SA_SHIRQ; 242 ICCVersion(cs, "NETspider-U:"); 243 return (1); 244} 245