| /* $Id: nj_u.c,v 2.14.2.3 2004/01/13 14:31:26 keil Exp $ |
| * |
| * This software may be used and distributed according to the terms |
| * of the GNU General Public License, incorporated herein by reference. |
| * |
| */ |
| |
| #include <linux/init.h> |
| #include "hisax.h" |
| #include "icc.h" |
| #include "isdnl1.h" |
| #include <linux/pci.h> |
| #include <linux/interrupt.h> |
| #include <linux/ppp_defs.h> |
| #include "netjet.h" |
| |
| static const char *NETjet_U_revision = "$Revision: 2.14.2.3 $"; |
| |
| static u_char dummyrr(struct IsdnCardState *cs, int chan, u_char off) |
| { |
| return(5); |
| } |
| |
| static void dummywr(struct IsdnCardState *cs, int chan, u_char off, u_char value) |
| { |
| } |
| |
| static irqreturn_t |
| netjet_u_interrupt(int intno, void *dev_id) |
| { |
| struct IsdnCardState *cs = dev_id; |
| u_char val, sval; |
| u_long flags; |
| |
| spin_lock_irqsave(&cs->lock, flags); |
| if (!((sval = bytein(cs->hw.njet.base + NETJET_IRQSTAT1)) & |
| NETJET_ISACIRQ)) { |
| val = NETjet_ReadIC(cs, ICC_ISTA); |
| if (cs->debug & L1_DEB_ISAC) |
| debugl1(cs, "tiger: i1 %x %x", sval, val); |
| if (val) { |
| icc_interrupt(cs, val); |
| NETjet_WriteIC(cs, ICC_MASK, 0xFF); |
| NETjet_WriteIC(cs, ICC_MASK, 0x0); |
| } |
| } |
| /* start new code 13/07/00 GE */ |
| /* set bits in sval to indicate which page is free */ |
| if (inl(cs->hw.njet.base + NETJET_DMA_WRITE_ADR) < |
| inl(cs->hw.njet.base + NETJET_DMA_WRITE_IRQ)) |
| /* the 2nd write page is free */ |
| sval = 0x08; |
| else /* the 1st write page is free */ |
| sval = 0x04; |
| if (inl(cs->hw.njet.base + NETJET_DMA_READ_ADR) < |
| inl(cs->hw.njet.base + NETJET_DMA_READ_IRQ)) |
| /* the 2nd read page is free */ |
| sval = sval | 0x02; |
| else /* the 1st read page is free */ |
| sval = sval | 0x01; |
| if (sval != cs->hw.njet.last_is0) /* we have a DMA interrupt */ |
| { |
| if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) { |
| spin_unlock_irqrestore(&cs->lock, flags); |
| return IRQ_HANDLED; |
| } |
| cs->hw.njet.irqstat0 = sval; |
| if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_READ) != |
| (cs->hw.njet.last_is0 & NETJET_IRQM0_READ)) |
| /* we have a read dma int */ |
| read_tiger(cs); |
| if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_WRITE) != |
| (cs->hw.njet.last_is0 & NETJET_IRQM0_WRITE)) |
| /* we have a write dma int */ |
| write_tiger(cs); |
| /* end new code 13/07/00 GE */ |
| test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); |
| } |
| spin_unlock_irqrestore(&cs->lock, flags); |
| return IRQ_HANDLED; |
| } |
| |
| static void |
| reset_netjet_u(struct IsdnCardState *cs) |
| { |
| cs->hw.njet.ctrl_reg = 0xff; /* Reset On */ |
| byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); |
| mdelay(10); |
| cs->hw.njet.ctrl_reg = 0x40; /* Reset Off and status read clear */ |
| /* now edge triggered for TJ320 GE 13/07/00 */ |
| byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); |
| mdelay(10); |
| cs->hw.njet.auxd = 0xC0; |
| cs->hw.njet.dmactrl = 0; |
| byteout(cs->hw.njet.auxa, 0); |
| byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ); |
| byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ); |
| byteout(cs->hw.njet.auxa, cs->hw.njet.auxd); |
| } |
| |
| static int |
| NETjet_U_card_msg(struct IsdnCardState *cs, int mt, void *arg) |
| { |
| u_long flags; |
| |
| switch (mt) { |
| case CARD_RESET: |
| spin_lock_irqsave(&cs->lock, flags); |
| reset_netjet_u(cs); |
| spin_unlock_irqrestore(&cs->lock, flags); |
| return(0); |
| case CARD_RELEASE: |
| release_io_netjet(cs); |
| return(0); |
| case CARD_INIT: |
| spin_lock_irqsave(&cs->lock, flags); |
| inittiger(cs); |
| reset_netjet_u(cs); |
| clear_pending_icc_ints(cs); |
| initicc(cs); |
| /* Reenable all IRQ */ |
| cs->writeisac(cs, ICC_MASK, 0); |
| spin_unlock_irqrestore(&cs->lock, flags); |
| return(0); |
| case CARD_TEST: |
| return(0); |
| } |
| return(0); |
| } |
| |
| static int __devinit nju_pci_probe(struct pci_dev *dev_netjet, |
| struct IsdnCardState *cs) |
| { |
| if (pci_enable_device(dev_netjet)) |
| return(0); |
| pci_set_master(dev_netjet); |
| cs->irq = dev_netjet->irq; |
| if (!cs->irq) { |
| printk(KERN_WARNING "NETspider-U: No IRQ for PCI card found\n"); |
| return(0); |
| } |
| cs->hw.njet.base = pci_resource_start(dev_netjet, 0); |
| if (!cs->hw.njet.base) { |
| printk(KERN_WARNING "NETspider-U: No IO-Adr for PCI card found\n"); |
| return(0); |
| } |
| |
| return (1); |
| } |
| |
| static int __devinit nju_cs_init(struct IsdnCard *card, |
| struct IsdnCardState *cs) |
| { |
| cs->hw.njet.auxa = cs->hw.njet.base + NETJET_AUXDATA; |
| cs->hw.njet.isac = cs->hw.njet.base | NETJET_ISAC_OFF; |
| mdelay(10); |
| |
| cs->hw.njet.ctrl_reg = 0xff; /* Reset On */ |
| byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); |
| mdelay(10); |
| |
| cs->hw.njet.ctrl_reg = 0x00; /* Reset Off and status read clear */ |
| byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); |
| mdelay(10); |
| |
| cs->hw.njet.auxd = 0xC0; |
| cs->hw.njet.dmactrl = 0; |
| |
| byteout(cs->hw.njet.auxa, 0); |
| byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ); |
| byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ); |
| byteout(cs->hw.njet.auxa, cs->hw.njet.auxd); |
| |
| switch ( ( ( NETjet_ReadIC( cs, ICC_RBCH ) >> 5 ) & 3 ) ) |
| { |
| case 3 : |
| return 1; /* end loop */ |
| |
| case 0 : |
| printk( KERN_WARNING "NETspider-U: NETjet-S PCI card found\n" ); |
| return -1; /* continue looping */ |
| |
| default : |
| printk( KERN_WARNING "NETspider-U: No PCI card found\n" ); |
| return 0; /* end loop & function */ |
| } |
| return 1; /* end loop */ |
| } |
| |
| static int __devinit nju_cs_init_rest(struct IsdnCard *card, |
| struct IsdnCardState *cs) |
| { |
| const int bytecnt = 256; |
| |
| printk(KERN_INFO |
| "NETspider-U: PCI card configured at %#lx IRQ %d\n", |
| cs->hw.njet.base, cs->irq); |
| if (!request_region(cs->hw.njet.base, bytecnt, "netspider-u isdn")) { |
| printk(KERN_WARNING |
| "HiSax: %s config port %#lx-%#lx already in use\n", |
| CardType[card->typ], |
| cs->hw.njet.base, |
| cs->hw.njet.base + bytecnt); |
| return (0); |
| } |
| setup_icc(cs); |
| cs->readisac = &NETjet_ReadIC; |
| cs->writeisac = &NETjet_WriteIC; |
| cs->readisacfifo = &NETjet_ReadICfifo; |
| cs->writeisacfifo = &NETjet_WriteICfifo; |
| cs->BC_Read_Reg = &dummyrr; |
| cs->BC_Write_Reg = &dummywr; |
| cs->BC_Send_Data = &netjet_fill_dma; |
| cs->cardmsg = &NETjet_U_card_msg; |
| cs->irq_func = &netjet_u_interrupt; |
| cs->irq_flags |= IRQF_SHARED; |
| ICCVersion(cs, "NETspider-U:"); |
| |
| return (1); |
| } |
| |
| static struct pci_dev *dev_netjet __devinitdata = NULL; |
| |
| int __devinit |
| setup_netjet_u(struct IsdnCard *card) |
| { |
| int ret; |
| struct IsdnCardState *cs = card->cs; |
| char tmp[64]; |
| |
| #ifdef __BIG_ENDIAN |
| #error "not running on big endian machines now" |
| #endif |
| |
| strcpy(tmp, NETjet_U_revision); |
| printk(KERN_INFO "HiSax: Traverse Tech. NETspider-U driver Rev. %s\n", HiSax_getrev(tmp)); |
| if (cs->typ != ISDN_CTYPE_NETJET_U) |
| return(0); |
| test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags); |
| |
| for ( ;; ) |
| { |
| if ((dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET, |
| PCI_DEVICE_ID_TIGERJET_300, dev_netjet))) { |
| ret = nju_pci_probe(dev_netjet, cs); |
| if (!ret) |
| return(0); |
| } else { |
| printk(KERN_WARNING "NETspider-U: No PCI card found\n"); |
| return(0); |
| } |
| |
| ret = nju_cs_init(card, cs); |
| if (!ret) |
| return (0); |
| if (ret > 0) |
| break; |
| /* ret < 0 == continue looping */ |
| } |
| |
| return nju_cs_init_rest(card, cs); |
| } |