nj_s.c
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:7k
- /* $Id: nj_s.c,v 1.1.4.1 2001/11/20 14:19:36 kai Exp $
- *
- * This software may be used and distributed according to the terms
- * of the GNU General Public License, incorporated herein by reference.
- *
- */
- #define __NO_VERSION__
- #include <linux/config.h>
- #include <linux/init.h>
- #include "hisax.h"
- #include "isac.h"
- #include "isdnl1.h"
- #include <linux/pci.h>
- #include <linux/interrupt.h>
- #include <linux/ppp_defs.h>
- #include "netjet.h"
- const char *NETjet_S_revision = "$Revision: 1.1.4.1 $";
- 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 void
- netjet_s_interrupt(int intno, void *dev_id, struct pt_regs *regs)
- {
- struct IsdnCardState *cs = dev_id;
- u_char val, sval;
- long flags;
- if (!cs) {
- printk(KERN_WARNING "NETjet-S: Spurious interrupt!n");
- return;
- }
- if (!((sval = bytein(cs->hw.njet.base + NETJET_IRQSTAT1)) &
- NETJET_ISACIRQ)) {
- val = NETjet_ReadIC(cs, ISAC_ISTA);
- if (cs->debug & L1_DEB_ISAC)
- debugl1(cs, "tiger: i1 %x %x", sval, val);
- if (val) {
- isac_interrupt(cs, val);
- NETjet_WriteIC(cs, ISAC_MASK, 0xFF);
- NETjet_WriteIC(cs, ISAC_MASK, 0x0);
- }
- }
- save_flags(flags);
- cli();
- /* 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)) {
- restore_flags(flags);
- return;
- }
- cs->hw.njet.irqstat0 = sval;
- restore_flags(flags);
- 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);
- } else
- restore_flags(flags);
- /* 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);
- }
- */
- }
- static void
- reset_netjet_s(struct IsdnCardState *cs)
- {
- long flags;
- save_flags(flags);
- sti();
- 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 */
- restore_flags(flags);
- cs->hw.njet.auxd = 0;
- 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);
- }
- static int
- NETjet_S_card_msg(struct IsdnCardState *cs, int mt, void *arg)
- {
- switch (mt) {
- case CARD_RESET:
- reset_netjet_s(cs);
- return(0);
- case CARD_RELEASE:
- release_io_netjet(cs);
- return(0);
- case CARD_INIT:
- inittiger(cs);
- clear_pending_isac_ints(cs);
- initisac(cs);
- /* Reenable all IRQ */
- cs->writeisac(cs, ISAC_MASK, 0);
- return(0);
- case CARD_TEST:
- return(0);
- }
- return(0);
- }
- static struct pci_dev *dev_netjet __initdata = NULL;
- int __init
- setup_netjet_s(struct IsdnCard *card)
- {
- int bytecnt;
- struct IsdnCardState *cs = card->cs;
- char tmp[64];
- long flags;
- #ifdef __BIG_ENDIAN
- #error "not running on big endian machines now"
- #endif
- strcpy(tmp, NETjet_S_revision);
- printk(KERN_INFO "HiSax: Traverse Tech. NETjet-S driver Rev. %sn", HiSax_getrev(tmp));
- if (cs->typ != ISDN_CTYPE_NETJET_S)
- return(0);
- test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
- #if CONFIG_PCI
- for ( ;; )
- {
- if (!pci_present()) {
- printk(KERN_ERR "Netjet: no PCI bus presentn");
- return(0);
- }
- if ((dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET,
- PCI_DEVICE_ID_TIGERJET_300, dev_netjet))) {
- if (pci_enable_device(dev_netjet))
- return(0);
- pci_set_master(dev_netjet);
- cs->irq = dev_netjet->irq;
- if (!cs->irq) {
- printk(KERN_WARNING "NETjet-S: No IRQ for PCI card foundn");
- return(0);
- }
- cs->hw.njet.base = pci_resource_start(dev_netjet, 0);
- if (!cs->hw.njet.base) {
- printk(KERN_WARNING "NETjet-S: No IO-Adr for PCI card foundn");
- return(0);
- }
- } else {
- printk(KERN_WARNING "NETjet-S: No PCI card foundn");
- return(0);
- }
- cs->hw.njet.auxa = cs->hw.njet.base + NETJET_AUXDATA;
- cs->hw.njet.isac = cs->hw.njet.base | NETJET_ISAC_OFF;
- save_flags(flags);
- sti();
- 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 */
- restore_flags(flags);
- 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, ISAC_RBCH ) >> 5 ) & 3 ) )
- {
- case 0 :
- break;
- case 3 :
- printk( KERN_WARNING "NETjet-S: NETspider-U PCI card foundn" );
- continue;
- default :
- printk( KERN_WARNING "NETjet-S: No PCI card foundn" );
- return 0;
- }
- break;
- }
- #else
- printk(KERN_WARNING "NETjet-S: NO_PCI_BIOSn");
- printk(KERN_WARNING "NETjet-S: unable to config NETJET-S PCIn");
- return (0);
- #endif /* CONFIG_PCI */
- bytecnt = 256;
- printk(KERN_INFO
- "NETjet-S: PCI card configured at %#lx IRQ %dn",
- cs->hw.njet.base, cs->irq);
- if (check_region(cs->hw.njet.base, bytecnt)) {
- printk(KERN_WARNING
- "HiSax: %s config port %#lx-%#lx already in usen",
- CardType[card->typ],
- cs->hw.njet.base,
- cs->hw.njet.base + bytecnt);
- return (0);
- } else {
- request_region(cs->hw.njet.base, bytecnt, "netjet-s isdn");
- }
- reset_netjet_s(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_S_card_msg;
- cs->irq_func = &netjet_s_interrupt;
- cs->irq_flags |= SA_SHIRQ;
- ISACVersion(cs, "NETjet-S:");
- return (1);
- }