diva.c

这个linux源代码是很全面的~基本完整了~使用c编译的~由于时间问题我没有亲自测试~但就算用来做参考资料也是非常好的

#define DIVA_ASSIGN 1

static void
diva_led_handler(struct IsdnCardState *cs)
{
	int blink = 0;

	if ((cs->subtyp == DIVA_IPAC_ISA) ||
	    (cs->subtyp == DIVA_IPAC_PCI) ||
	    (cs->subtyp == DIVA_IPACX_PCI)   )
		return;
	del_timer(&cs->hw.diva.tl);
	if (cs->hw.diva.status & DIVA_ASSIGN)
		cs->hw.diva.ctrl_reg |= (DIVA_ISA == cs->subtyp) ?
			DIVA_ISA_LED_A : DIVA_PCI_LED_A;
	else {
		cs->hw.diva.ctrl_reg ^= (DIVA_ISA == cs->subtyp) ?
			DIVA_ISA_LED_A : DIVA_PCI_LED_A;
		blink = 250;
	}
	if (cs->hw.diva.status & 0xf000)
		cs->hw.diva.ctrl_reg |= (DIVA_ISA == cs->subtyp) ?
			DIVA_ISA_LED_B : DIVA_PCI_LED_B;
	else if (cs->hw.diva.status & 0x0f00) {
		cs->hw.diva.ctrl_reg ^= (DIVA_ISA == cs->subtyp) ?
			DIVA_ISA_LED_B : DIVA_PCI_LED_B;
		blink = 500;
	} else
		cs->hw.diva.ctrl_reg &= ~((DIVA_ISA == cs->subtyp) ?
			DIVA_ISA_LED_B : DIVA_PCI_LED_B);

	byteout(cs->hw.diva.ctrl, cs->hw.diva.ctrl_reg);
	if (blink) {
		init_timer(&cs->hw.diva.tl);
		cs->hw.diva.tl.expires = jiffies + ((blink * HZ) / 1000);
		add_timer(&cs->hw.diva.tl);
	}
}

static int
Diva_card_msg(struct IsdnCardState *cs, int mt, void *arg)
{
	u_int *ireg;

	switch (mt) {
		case CARD_RESET:
			reset_diva(cs);
			return(0);
		case CARD_RELEASE:
			release_io_diva(cs);
			return(0);
		case CARD_INIT:
			if (cs->subtyp == DIVA_IPACX_PCI) {
				ireg = (unsigned int *)cs->hw.diva.pci_cfg;
				*ireg = PITA_INT0_ENABLE;
			  init_ipacx(cs, 3); // init chip and enable interrupts
        return (0);
			}
			if (cs->subtyp == DIVA_IPAC_PCI) {
				ireg = (unsigned int *)cs->hw.diva.pci_cfg;
				*ireg = PITA_INT0_ENABLE;
			}
			inithscxisac(cs, 3);
			return(0);
		case CARD_TEST:
			return(0);
		case (MDL_REMOVE | REQUEST):
			cs->hw.diva.status = 0;
			break;
		case (MDL_ASSIGN | REQUEST):
			cs->hw.diva.status |= DIVA_ASSIGN;
			break;
		case MDL_INFO_SETUP:
			if ((long)arg)
				cs->hw.diva.status |=  0x0200;
			else
				cs->hw.diva.status |=  0x0100;
			break;
		case MDL_INFO_CONN:
			if ((long)arg)
				cs->hw.diva.status |=  0x2000;
			else
				cs->hw.diva.status |=  0x1000;
			break;
		case MDL_INFO_REL:
			if ((long)arg) {
				cs->hw.diva.status &=  ~0x2000;
				cs->hw.diva.status &=  ~0x0200;
			} else {
				cs->hw.diva.status &=  ~0x1000;
				cs->hw.diva.status &=  ~0x0100;
			}
			break;
	}
	if ((cs->subtyp != DIVA_IPAC_ISA) && 
	    (cs->subtyp != DIVA_IPAC_PCI) &&
	    (cs->subtyp != DIVA_IPACX_PCI)   )
		diva_led_handler(cs);
	return(0);
}

static struct pci_dev *dev_diva __initdata = NULL;
static struct pci_dev *dev_diva_u __initdata = NULL;
static struct pci_dev *dev_diva201 __initdata = NULL;
static struct pci_dev *dev_diva202 __initdata = NULL;

#ifdef __ISAPNP__
static struct isapnp_device_id diva_ids[] __initdata = {
	{ ISAPNP_VENDOR('G', 'D', 'I'), ISAPNP_FUNCTION(0x51),
	  ISAPNP_VENDOR('G', 'D', 'I'), ISAPNP_FUNCTION(0x51), 
	  (unsigned long) "Diva picola" },
	{ ISAPNP_VENDOR('G', 'D', 'I'), ISAPNP_FUNCTION(0x51),
	  ISAPNP_VENDOR('E', 'I', 'C'), ISAPNP_FUNCTION(0x51), 
	  (unsigned long) "Diva picola" },
	{ ISAPNP_VENDOR('G', 'D', 'I'), ISAPNP_FUNCTION(0x71),
	  ISAPNP_VENDOR('G', 'D', 'I'), ISAPNP_FUNCTION(0x71), 
	  (unsigned long) "Diva 2.0" },
	{ ISAPNP_VENDOR('G', 'D', 'I'), ISAPNP_FUNCTION(0x71),
	  ISAPNP_VENDOR('E', 'I', 'C'), ISAPNP_FUNCTION(0x71), 
	  (unsigned long) "Diva 2.0" },
	{ ISAPNP_VENDOR('G', 'D', 'I'), ISAPNP_FUNCTION(0xA1),
	  ISAPNP_VENDOR('G', 'D', 'I'), ISAPNP_FUNCTION(0xA1), 
	  (unsigned long) "Diva 2.01" },
	{ ISAPNP_VENDOR('G', 'D', 'I'), ISAPNP_FUNCTION(0xA1),
	  ISAPNP_VENDOR('E', 'I', 'C'), ISAPNP_FUNCTION(0xA1), 
	  (unsigned long) "Diva 2.01" },
	{ 0, }
};

static struct isapnp_device_id *pdev = &diva_ids[0];
static struct pci_bus *pnp_c __devinitdata = NULL;
#endif


int __init
setup_diva(struct IsdnCard *card)
{
	int bytecnt = 8;
	u_char val;
	struct IsdnCardState *cs = card->cs;
	char tmp[64];

	strcpy(tmp, Diva_revision);
	printk(KERN_INFO "HiSax: Eicon.Diehl Diva driver Rev. %s\n", HiSax_getrev(tmp));
	if (cs->typ != ISDN_CTYPE_DIEHLDIVA)
		return(0);
	cs->hw.diva.status = 0;
	if (card->para[1]) {
		cs->hw.diva.ctrl_reg = 0;
		cs->hw.diva.cfg_reg = card->para[1];
		val = readreg(cs->hw.diva.cfg_reg + DIVA_IPAC_ADR,
			cs->hw.diva.cfg_reg + DIVA_IPAC_DATA, IPAC_ID);
		printk(KERN_INFO "Diva: IPAC version %x\n", val);
		if ((val == 1) || (val==2)) {
			cs->subtyp = DIVA_IPAC_ISA;
			cs->hw.diva.ctrl = 0;
			cs->hw.diva.isac = card->para[1] + DIVA_IPAC_DATA;
			cs->hw.diva.hscx = card->para[1] + DIVA_IPAC_DATA;
			cs->hw.diva.isac_adr = card->para[1] + DIVA_IPAC_ADR;
			cs->hw.diva.hscx_adr = card->para[1] + DIVA_IPAC_ADR;
			test_and_set_bit(HW_IPAC, &cs->HW_Flags);
		} else {
			cs->subtyp = DIVA_ISA;
			cs->hw.diva.ctrl = card->para[1] + DIVA_ISA_CTRL;
			cs->hw.diva.isac = card->para[1] + DIVA_ISA_ISAC_DATA;
			cs->hw.diva.hscx = card->para[1] + DIVA_HSCX_DATA;
			cs->hw.diva.isac_adr = card->para[1] + DIVA_ISA_ISAC_ADR;
			cs->hw.diva.hscx_adr = card->para[1] + DIVA_HSCX_ADR;
		}
		cs->irq = card->para[0];
	} else {
#ifdef __ISAPNP__
		if (isapnp_present()) {
			struct pci_bus *pb;
			struct pci_dev *pd;

			while(pdev->card_vendor) {
				if ((pb = isapnp_find_card(pdev->card_vendor,
					pdev->card_device, pnp_c))) {
					pnp_c = pb;
					pd = NULL;
					if ((pd = isapnp_find_dev(pnp_c,
						pdev->vendor, pdev->function, pd))) {
						printk(KERN_INFO "HiSax: %s detected\n",
							(char *)pdev->driver_data);
						pd->prepare(pd);
						pd->deactivate(pd);
						pd->activate(pd);
						card->para[1] =
							pd->resource[0].start;
						card->para[0] =
							pd->irq_resource[0].start;
						if (!card->para[0] || !card->para[1]) {
							printk(KERN_ERR "Diva PnP:some resources are missing %ld/%lx\n",
								card->para[0], card->para[1]);
							pd->deactivate(pd);
							return(0);
						}
						cs->hw.diva.cfg_reg  = card->para[1];
						cs->irq = card->para[0];
						if (pdev->function == ISAPNP_FUNCTION(0xA1)) {
							cs->subtyp = DIVA_IPAC_ISA;
							cs->hw.diva.ctrl = 0;
							cs->hw.diva.isac =
								card->para[1] + DIVA_IPAC_DATA;
							cs->hw.diva.hscx =
								card->para[1] + DIVA_IPAC_DATA;
							cs->hw.diva.isac_adr =
								card->para[1] + DIVA_IPAC_ADR;
							cs->hw.diva.hscx_adr =
								card->para[1] + DIVA_IPAC_ADR;
							test_and_set_bit(HW_IPAC, &cs->HW_Flags);
						} else {
							cs->subtyp = DIVA_ISA;
							cs->hw.diva.ctrl =
								card->para[1] + DIVA_ISA_CTRL;
							cs->hw.diva.isac =
								card->para[1] + DIVA_ISA_ISAC_DATA;
							cs->hw.diva.hscx =
								card->para[1] + DIVA_HSCX_DATA;
							cs->hw.diva.isac_adr =
								card->para[1] + DIVA_ISA_ISAC_ADR;
							cs->hw.diva.hscx_adr =
								card->para[1] + DIVA_HSCX_ADR;
						}
						goto ready;
					} else {
						printk(KERN_ERR "Diva PnP: PnP error card found, no device\n");
						return(0);
					}
				}
				pdev++;
				pnp_c=NULL;
			} 
			if (!pdev->card_vendor) {
				printk(KERN_INFO "Diva PnP: no ISAPnP card found\n");
			}
		}
#endif
#if CONFIG_PCI
		if (!pci_present()) {
			printk(KERN_ERR "Diva: no PCI bus present\n");
			return(0);
		}

		cs->subtyp = 0;
		if ((dev_diva = pci_find_device(PCI_VENDOR_ID_EICON,
			PCI_DEVICE_ID_EICON_DIVA20, dev_diva))) {
			if (pci_enable_device(dev_diva))
				return(0);
			cs->subtyp = DIVA_PCI;
			cs->irq = dev_diva->irq;
			cs->hw.diva.cfg_reg = pci_resource_start(dev_diva, 2);
		} else if ((dev_diva_u = pci_find_device(PCI_VENDOR_ID_EICON,
			PCI_DEVICE_ID_EICON_DIVA20_U, dev_diva_u))) {
			if (pci_enable_device(dev_diva_u))
				return(0);
			cs->subtyp = DIVA_PCI;
			cs->irq = dev_diva_u->irq;
			cs->hw.diva.cfg_reg = pci_resource_start(dev_diva_u, 2);
		} else if ((dev_diva201 = pci_find_device(PCI_VENDOR_ID_EICON,
			PCI_DEVICE_ID_EICON_DIVA201, dev_diva201))) {
			if (pci_enable_device(dev_diva201))
				return(0);
			cs->subtyp = DIVA_IPAC_PCI;
			cs->irq = dev_diva201->irq;
			cs->hw.diva.pci_cfg =
				(ulong) ioremap(pci_resource_start(dev_diva201, 0), 4096);
			cs->hw.diva.cfg_reg =
				(ulong) ioremap(pci_resource_start(dev_diva201, 1), 4096);
		} else if ((dev_diva202 = pci_find_device(PCI_VENDOR_ID_EICON,
			PCI_DEVICE_ID_EICON_DIVA202, dev_diva202))) {
			if (pci_enable_device(dev_diva202))
				return(0);
			cs->subtyp = DIVA_IPACX_PCI;
			cs->irq = dev_diva202->irq;
			cs->hw.diva.pci_cfg =
				(ulong) ioremap(pci_resource_start(dev_diva202, 0), 4096);
			cs->hw.diva.cfg_reg =
				(ulong) ioremap(pci_resource_start(dev_diva202, 1), 4096);
		} else {
			printk(KERN_WARNING "Diva: No PCI card found\n");
			return(0);
		}

		if (!cs->irq) {
			printk(KERN_WARNING "Diva: No IRQ for PCI card found\n");
			return(0);
		}

		if (!cs->hw.diva.cfg_reg) {
			printk(KERN_WARNING "Diva: No IO-Adr for PCI card found\n");
			return(0);
		}
		cs->irq_flags |= SA_SHIRQ;
#else
		printk(KERN_WARNING "Diva: cfgreg 0 and NO_PCI_BIOS\n");
		printk(KERN_WARNING "Diva: unable to config DIVA PCI\n");
		return (0);
#endif /* CONFIG_PCI */
		if ((cs->subtyp == DIVA_IPAC_PCI) ||
		    (cs->subtyp == DIVA_IPACX_PCI)   ) {
			cs->hw.diva.ctrl = 0;
			cs->hw.diva.isac = 0;
			cs->hw.diva.hscx = 0;
			cs->hw.diva.isac_adr = 0;
			cs->hw.diva.hscx_adr = 0;
			test_and_set_bit(HW_IPAC, &cs->HW_Flags);
			bytecnt = 0;
		} else {
			cs->hw.diva.ctrl = cs->hw.diva.cfg_reg + DIVA_PCI_CTRL;
			cs->hw.diva.isac = cs->hw.diva.cfg_reg + DIVA_PCI_ISAC_DATA;
			cs->hw.diva.hscx = cs->hw.diva.cfg_reg + DIVA_HSCX_DATA;
			cs->hw.diva.isac_adr = cs->hw.diva.cfg_reg + DIVA_PCI_ISAC_ADR;
			cs->hw.diva.hscx_adr = cs->hw.diva.cfg_reg + DIVA_HSCX_ADR;
			bytecnt = 32;
		}
	}
ready:
	printk(KERN_INFO
		"Diva: %s card configured at %#lx IRQ %d\n",
		(cs->subtyp == DIVA_PCI) ? "PCI" :
		(cs->subtyp == DIVA_ISA) ? "ISA" : 
		(cs->subtyp == DIVA_IPAC_ISA) ? "IPAC ISA" :
		(cs->subtyp == DIVA_IPAC_PCI) ? "IPAC PCI" : "IPACX PCI",
		cs->hw.diva.cfg_reg, cs->irq);
	if ((cs->subtyp == DIVA_IPAC_PCI)  || 
	    (cs->subtyp == DIVA_IPACX_PCI) || 
	    (cs->subtyp == DIVA_PCI)         )
		printk(KERN_INFO "Diva: %s space at %#lx\n",
			(cs->subtyp == DIVA_PCI) ? "PCI" :
			(cs->subtyp == DIVA_IPAC_PCI) ? "IPAC PCI" : "IPACX PCI",
			cs->hw.diva.pci_cfg);
	if ((cs->subtyp != DIVA_IPAC_PCI) &&
	    (cs->subtyp != DIVA_IPACX_PCI)   ) {
		if (check_region(cs->hw.diva.cfg_reg, bytecnt)) {
			printk(KERN_WARNING
			       "HiSax: %s config port %lx-%lx already in use\n",
			       CardType[card->typ],
			       cs->hw.diva.cfg_reg,
			       cs->hw.diva.cfg_reg + bytecnt);
			return (0);
		} else {
			request_region(cs->hw.diva.cfg_reg, bytecnt, "diva isdn");
		}
	}
	reset_diva(cs);
	cs->BC_Read_Reg  = &ReadHSCX;
	cs->BC_Write_Reg = &WriteHSCX;
	cs->BC_Send_Data = &hscx_fill_fifo;
	cs->cardmsg = &Diva_card_msg;
	if (cs->subtyp == DIVA_IPAC_ISA) {
		cs->readisac  = &ReadISAC_IPAC;
		cs->writeisac = &WriteISAC_IPAC;
		cs->readisacfifo  = &ReadISACfifo_IPAC;
		cs->writeisacfifo = &WriteISACfifo_IPAC;
		cs->irq_func = &diva_irq_ipac_isa;
		val = readreg(cs->hw.diva.isac_adr, cs->hw.diva.isac, IPAC_ID);
		printk(KERN_INFO "Diva: IPAC version %x\n", val);
	} else if (cs->subtyp == DIVA_IPAC_PCI) {
		cs->readisac  = &MemReadISAC_IPAC;
		cs->writeisac = &MemWriteISAC_IPAC;
		cs->readisacfifo  = &MemReadISACfifo_IPAC;
		cs->writeisacfifo = &MemWriteISACfifo_IPAC;
		cs->BC_Read_Reg  = &MemReadHSCX;
		cs->BC_Write_Reg = &MemWriteHSCX;
		cs->BC_Send_Data = &Memhscx_fill_fifo;
		cs->irq_func = &diva_irq_ipac_pci;
		val = memreadreg(cs->hw.diva.cfg_reg, IPAC_ID);
		printk(KERN_INFO "Diva: IPAC version %x\n", val);
	} else if (cs->subtyp == DIVA_IPACX_PCI) {
		cs->readisac  = &MemReadISAC_IPACX;
		cs->writeisac = &MemWriteISAC_IPACX;
		cs->readisacfifo  = &MemReadISACfifo_IPACX;
		cs->writeisacfifo = &MemWriteISACfifo_IPACX;
		cs->BC_Read_Reg  = &MemReadHSCX_IPACX;
		cs->BC_Write_Reg = &MemWriteHSCX_IPACX;
		cs->BC_Send_Data = 0; // function located in ipacx module
		cs->irq_func = &diva_irq_ipacx_pci;
		printk(KERN_INFO "Diva: IPACX Design Id: %x\n", 
            MemReadISAC_IPACX(cs, IPACX_ID) &0x3F);
	} else { /* DIVA 2.0 */
		cs->hw.diva.tl.function = (void *) diva_led_handler;
		cs->hw.diva.tl.data = (long) cs;
		init_timer(&cs->hw.diva.tl);
		cs->readisac  = &ReadISAC;
		cs->writeisac = &WriteISAC;
		cs->readisacfifo  = &ReadISACfifo;
		cs->writeisacfifo = &WriteISACfifo;
		cs->irq_func = &diva_interrupt;
		ISACVersion(cs, "Diva:");
		if (HscxVersion(cs, "Diva:")) {
			printk(KERN_WARNING
		       "Diva: wrong HSCX versions check IO address\n");
			release_io_diva(cs);
			return (0);
		}
	}
	return (1);
}