/* $Id: nj_u.c,v 2.8.6.6 2001/09/23 22:24:50 kai Exp $ * * This software may be used and distributed according to the terms * of the GNU General Public License, incorporated herein by reference. * */ #include <linux/config.h> #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" const char *NETjet_U_revision = "$Revision: 2.8.6.6 $"; static void nj_u_interrupt(int intno, void *dev_id, struct pt_regs *regs) { struct IsdnCardState *cs = dev_id; u8 val, sval; spin_lock(&cs->lock); 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 */ { 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 */ } /* if (!testcnt--) { cs->hw.njet.dmactrl = 0; byteout(cs->hw.njet.base + NETJET_DMACTRL, cs->hw.njet.dmactrl); byteout(cs->hw.njet.base + NETJET_IRQMASK0, 0); } */ spin_unlock(&cs->lock); } static int nj_u_reset(struct IsdnCardState *cs) { cs->hw.njet.ctrl_reg = 0xff; /* Reset On */ byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); set_current_state(TASK_UNINTERRUPTIBLE); schedule_timeout((10*HZ)/1000); /* Timeout 10ms */ 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); set_current_state(TASK_UNINTERRUPTIBLE); schedule_timeout((10*HZ)/1000); /* Timeout 10ms */ 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); return 0; } static void nj_u_init(struct IsdnCardState *cs) { inittiger(cs); initicc(cs); /* Reenable all IRQ */ NETjet_WriteIC(cs, ICC_MASK, 0); } static struct card_ops nj_u_ops = { .init = nj_u_init, .reset = nj_u_reset, .release = netjet_release, .irq_func = nj_u_interrupt, }; static int __init nj_u_probe(struct IsdnCardState *cs, struct pci_dev *pdev) { if (pci_enable_device(pdev)) goto err; pci_set_master(pdev); cs->irq = pdev->irq; cs->irq_flags |= SA_SHIRQ; cs->hw.njet.pdev = pdev; cs->hw.njet.base = pci_resource_start(pdev, 0); if (!request_io(&cs->rs, cs->hw.njet.base, 0x100, "netspider-u isdn")) goto err; cs->hw.njet.auxa = cs->hw.njet.base + NETJET_AUXDATA; cs->hw.njet.isac = cs->hw.njet.base | NETJET_ISAC_OFF; cs->hw.njet.ctrl_reg = 0xff; /* Reset On */ byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); set_current_state(TASK_UNINTERRUPTIBLE); schedule_timeout((10*HZ)/1000); /* Timeout 10ms */ cs->hw.njet.ctrl_reg = 0x00; /* Reset Off and status read clear */ byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg); set_current_state(TASK_UNINTERRUPTIBLE); schedule_timeout((10*HZ)/1000); /* Timeout 10ms */ cs->hw.njet.auxd = 0xC0; cs->hw.njet.dmactrl = 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: break; case 0: printk(KERN_WARNING "NETspider-U: NETjet-S PCI card found\n" ); goto err; default: printk(KERN_WARNING "NETspider-U: No PCI card found\n" ); goto err; } printk(KERN_INFO "NETspider-U: PCI card configured at %#lx IRQ %d\n", cs->hw.njet.base, cs->irq); nj_u_reset(cs); cs->card_ops = &nj_u_ops; icc_setup(cs, &netjet_dc_ops); return 0; err: hisax_release_resources(cs); return -EBUSY; } static struct pci_dev *dev_netjet __initdata = NULL; int __init setup_netjet_u(struct IsdnCard *card) { 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)); dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET, PCI_DEVICE_ID_TIGERJET_300, dev_netjet); if (dev_netjet) { if (nj_u_probe(card->cs, dev_netjet)) return 1; return 0; } printk(KERN_WARNING "NETspider-U: No PCI card found\n"); return 0; }