diff options
Diffstat (limited to 'drivers/isdn/hisax/nj_u.c')
| -rw-r--r-- | drivers/isdn/hisax/nj_u.c | 258 |
1 files changed, 258 insertions, 0 deletions
diff --git a/drivers/isdn/hisax/nj_u.c b/drivers/isdn/hisax/nj_u.c new file mode 100644 index 000000000..4e8adbede --- /dev/null +++ b/drivers/isdn/hisax/nj_u.c @@ -0,0 +1,258 @@ +/* $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 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 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 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: NETspider-U config port %#lx-%#lx " + "already in use\n", + 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 = NULL; + +int 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 = hisax_find_pci_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); +} |