nj_u.c revision 41a68a748bbc61f5bcea999e33ba72926dfbe6f7
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/init.h> 9#include "hisax.h" 10#include "icc.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 17static const char *NETjet_U_revision = "$Revision: 2.14.2.3 $"; 18 19static u_char dummyrr(struct IsdnCardState *cs, int chan, u_char off) 20{ 21 return(5); 22} 23 24static void dummywr(struct IsdnCardState *cs, int chan, u_char off, u_char value) 25{ 26} 27 28static irqreturn_t 29netjet_u_interrupt(int intno, void *dev_id) 30{ 31 struct IsdnCardState *cs = dev_id; 32 u_char val, sval; 33 u_long flags; 34 35 spin_lock_irqsave(&cs->lock, flags); 36 if (!((sval = bytein(cs->hw.njet.base + NETJET_IRQSTAT1)) & 37 NETJET_ISACIRQ)) { 38 val = NETjet_ReadIC(cs, ICC_ISTA); 39 if (cs->debug & L1_DEB_ISAC) 40 debugl1(cs, "tiger: i1 %x %x", sval, val); 41 if (val) { 42 icc_interrupt(cs, val); 43 NETjet_WriteIC(cs, ICC_MASK, 0xFF); 44 NETjet_WriteIC(cs, ICC_MASK, 0x0); 45 } 46 } 47 /* start new code 13/07/00 GE */ 48 /* set bits in sval to indicate which page is free */ 49 if (inl(cs->hw.njet.base + NETJET_DMA_WRITE_ADR) < 50 inl(cs->hw.njet.base + NETJET_DMA_WRITE_IRQ)) 51 /* the 2nd write page is free */ 52 sval = 0x08; 53 else /* the 1st write page is free */ 54 sval = 0x04; 55 if (inl(cs->hw.njet.base + NETJET_DMA_READ_ADR) < 56 inl(cs->hw.njet.base + NETJET_DMA_READ_IRQ)) 57 /* the 2nd read page is free */ 58 sval = sval | 0x02; 59 else /* the 1st read page is free */ 60 sval = sval | 0x01; 61 if (sval != cs->hw.njet.last_is0) /* we have a DMA interrupt */ 62 { 63 if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { 64 spin_unlock_irqrestore(&cs->lock, flags); 65 return IRQ_HANDLED; 66 } 67 cs->hw.njet.irqstat0 = sval; 68 if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_READ) != 69 (cs->hw.njet.last_is0 & NETJET_IRQM0_READ)) 70 /* we have a read dma int */ 71 read_tiger(cs); 72 if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_WRITE) != 73 (cs->hw.njet.last_is0 & NETJET_IRQM0_WRITE)) 74 /* we have a write dma int */ 75 write_tiger(cs); 76 /* end new code 13/07/00 GE */ 77 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); 78 } 79 spin_unlock_irqrestore(&cs->lock, flags); 80 return IRQ_HANDLED; 81} 82 83static void 84reset_netjet_u(struct IsdnCardState *cs) 85{ 86 cs->hw.njet.ctrl_reg = 0xff; /* Reset On */ 87 byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); 88 mdelay(10); 89 cs->hw.njet.ctrl_reg = 0x40; /* Reset Off and status read clear */ 90 /* now edge triggered for TJ320 GE 13/07/00 */ 91 byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); 92 mdelay(10); 93 cs->hw.njet.auxd = 0xC0; 94 cs->hw.njet.dmactrl = 0; 95 byteout(cs->hw.njet.auxa, 0); 96 byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ); 97 byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ); 98 byteout(cs->hw.njet.auxa, cs->hw.njet.auxd); 99} 100 101static int 102NETjet_U_card_msg(struct IsdnCardState *cs, int mt, void *arg) 103{ 104 u_long flags; 105 106 switch (mt) { 107 case CARD_RESET: 108 spin_lock_irqsave(&cs->lock, flags); 109 reset_netjet_u(cs); 110 spin_unlock_irqrestore(&cs->lock, flags); 111 return(0); 112 case CARD_RELEASE: 113 release_io_netjet(cs); 114 return(0); 115 case CARD_INIT: 116 spin_lock_irqsave(&cs->lock, flags); 117 inittiger(cs); 118 reset_netjet_u(cs); 119 clear_pending_icc_ints(cs); 120 initicc(cs); 121 /* Reenable all IRQ */ 122 cs->writeisac(cs, ICC_MASK, 0); 123 spin_unlock_irqrestore(&cs->lock, flags); 124 return(0); 125 case CARD_TEST: 126 return(0); 127 } 128 return(0); 129} 130 131static int __devinit nju_pci_probe(struct pci_dev *dev_netjet, 132 struct IsdnCardState *cs) 133{ 134 if (pci_enable_device(dev_netjet)) 135 return(0); 136 pci_set_master(dev_netjet); 137 cs->irq = dev_netjet->irq; 138 if (!cs->irq) { 139 printk(KERN_WARNING "NETspider-U: No IRQ for PCI card found\n"); 140 return(0); 141 } 142 cs->hw.njet.base = pci_resource_start(dev_netjet, 0); 143 if (!cs->hw.njet.base) { 144 printk(KERN_WARNING "NETspider-U: No IO-Adr for PCI card found\n"); 145 return(0); 146 } 147 148 return (1); 149} 150 151static int __devinit nju_cs_init(struct IsdnCard *card, 152 struct IsdnCardState *cs) 153{ 154 cs->hw.njet.auxa = cs->hw.njet.base + NETJET_AUXDATA; 155 cs->hw.njet.isac = cs->hw.njet.base | NETJET_ISAC_OFF; 156 mdelay(10); 157 158 cs->hw.njet.ctrl_reg = 0xff; /* Reset On */ 159 byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); 160 mdelay(10); 161 162 cs->hw.njet.ctrl_reg = 0x00; /* Reset Off and status read clear */ 163 byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); 164 mdelay(10); 165 166 cs->hw.njet.auxd = 0xC0; 167 cs->hw.njet.dmactrl = 0; 168 169 byteout(cs->hw.njet.auxa, 0); 170 byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ); 171 byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ); 172 byteout(cs->hw.njet.auxa, cs->hw.njet.auxd); 173 174 switch ( ( ( NETjet_ReadIC( cs, ICC_RBCH ) >> 5 ) & 3 ) ) 175 { 176 case 3 : 177 return 1; /* end loop */ 178 179 case 0 : 180 printk( KERN_WARNING "NETspider-U: NETjet-S PCI card found\n" ); 181 return -1; /* continue looping */ 182 183 default : 184 printk( KERN_WARNING "NETspider-U: No PCI card found\n" ); 185 return 0; /* end loop & function */ 186 } 187 return 1; /* end loop */ 188} 189 190static int __devinit nju_cs_init_rest(struct IsdnCard *card, 191 struct IsdnCardState *cs) 192{ 193 const int bytecnt = 256; 194 195 printk(KERN_INFO 196 "NETspider-U: PCI card configured at %#lx IRQ %d\n", 197 cs->hw.njet.base, cs->irq); 198 if (!request_region(cs->hw.njet.base, bytecnt, "netspider-u isdn")) { 199 printk(KERN_WARNING 200 "HiSax: NETspider-U config port %#lx-%#lx " 201 "already in use\n", 202 cs->hw.njet.base, 203 cs->hw.njet.base + bytecnt); 204 return (0); 205 } 206 setup_icc(cs); 207 cs->readisac = &NETjet_ReadIC; 208 cs->writeisac = &NETjet_WriteIC; 209 cs->readisacfifo = &NETjet_ReadICfifo; 210 cs->writeisacfifo = &NETjet_WriteICfifo; 211 cs->BC_Read_Reg = &dummyrr; 212 cs->BC_Write_Reg = &dummywr; 213 cs->BC_Send_Data = &netjet_fill_dma; 214 cs->cardmsg = &NETjet_U_card_msg; 215 cs->irq_func = &netjet_u_interrupt; 216 cs->irq_flags |= IRQF_SHARED; 217 ICCVersion(cs, "NETspider-U:"); 218 219 return (1); 220} 221 222static struct pci_dev *dev_netjet __devinitdata = NULL; 223 224int __devinit 225setup_netjet_u(struct IsdnCard *card) 226{ 227 int ret; 228 struct IsdnCardState *cs = card->cs; 229 char tmp[64]; 230 231#ifdef __BIG_ENDIAN 232#error "not running on big endian machines now" 233#endif 234 235 strcpy(tmp, NETjet_U_revision); 236 printk(KERN_INFO "HiSax: Traverse Tech. NETspider-U driver Rev. %s\n", HiSax_getrev(tmp)); 237 if (cs->typ != ISDN_CTYPE_NETJET_U) 238 return(0); 239 test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); 240 241 for ( ;; ) 242 { 243 if ((dev_netjet = hisax_find_pci_device(PCI_VENDOR_ID_TIGERJET, 244 PCI_DEVICE_ID_TIGERJET_300, dev_netjet))) { 245 ret = nju_pci_probe(dev_netjet, cs); 246 if (!ret) 247 return(0); 248 } else { 249 printk(KERN_WARNING "NETspider-U: No PCI card found\n"); 250 return(0); 251 } 252 253 ret = nju_cs_init(card, cs); 254 if (!ret) 255 return (0); 256 if (ret > 0) 257 break; 258 /* ret < 0 == continue looping */ 259 } 260 261 return nju_cs_init_rest(card, cs); 262} 263