diva.c

arm平台上的uclinux系统全部源代码

		goto Start_IPAC;
	}
	if (!icnt)
		printk(KERN_WARNING "DIVA IPAC IRQ LOOP\n");
	writereg(cs->hw.diva.isac_adr, cs->hw.diva.isac, IPAC_MASK, 0xFF);
	writereg(cs->hw.diva.isac_adr, cs->hw.diva.isac, IPAC_MASK, 0xC0);
}


void
release_io_diva(struct IsdnCardState *cs)
{
	int bytecnt;

	if (cs->subtyp != DIVA_IPAC_ISA) {
		del_timer(&cs->hw.diva.tl);
		if (cs->hw.diva.cfg_reg)
			byteout(cs->hw.diva.ctrl, 0); /* LED off, Reset */
	}
	if ((cs->subtyp == DIVA_ISA) || (cs->subtyp == DIVA_IPAC_ISA))
		bytecnt = 8;
	else
		bytecnt = 32;
	if (cs->hw.diva.cfg_reg) {
		release_region(cs->hw.diva.cfg_reg, bytecnt);
	}
}

static void
reset_diva(struct IsdnCardState *cs)
{
	long flags;

	save_flags(flags);
	sti();
	if (cs->subtyp == DIVA_IPAC_ISA) {
		writereg(cs->hw.diva.isac_adr, cs->hw.diva.isac, IPAC_POTA2, 0x20);
		current->state = TASK_INTERRUPTIBLE;
		current->timeout = jiffies + (10 * HZ) / 1000;	/* Timeout 10ms */
		schedule();
		writereg(cs->hw.diva.isac_adr, cs->hw.diva.isac, IPAC_POTA2, 0x00);
		current->state = TASK_INTERRUPTIBLE;
		current->timeout = jiffies + (10 * HZ) / 1000;	/* Timeout 10ms */
		schedule();
		writereg(cs->hw.diva.isac_adr, cs->hw.diva.isac, IPAC_MASK, 0xc0);
		schedule();
	} else {
		cs->hw.diva.ctrl_reg = 0;        /* Reset On */
		byteout(cs->hw.diva.ctrl, cs->hw.diva.ctrl_reg);
		current->state = TASK_INTERRUPTIBLE;
		current->timeout = jiffies + (10 * HZ) / 1000;	/* Timeout 10ms */
		schedule();
		cs->hw.diva.ctrl_reg |= DIVA_RESET;  /* Reset Off */
		byteout(cs->hw.diva.ctrl, cs->hw.diva.ctrl_reg);
		current->state = TASK_INTERRUPTIBLE;
		current->timeout = jiffies + (10 * HZ) / 1000;	/* Timeout 10ms */
		schedule();
		if (cs->subtyp == DIVA_ISA)
			cs->hw.diva.ctrl_reg |= DIVA_ISA_LED_A;
		else
			cs->hw.diva.ctrl_reg |= DIVA_PCI_LED_A;
		byteout(cs->hw.diva.ctrl, cs->hw.diva.ctrl_reg);
	}
	restore_flags(flags);
}

#define DIVA_ASSIGN 1

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

	if (cs->subtyp == DIVA_IPAC_ISA)
		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 irq_flag = I4L_IRQ_FLAG;

	switch (mt) {
		case CARD_RESET:
			reset_diva(cs);
			return(0);
		case CARD_RELEASE:
			release_io_diva(cs);
			return(0);
		case CARD_SETIRQ:
			if (cs->subtyp == DIVA_PCI)
				irq_flag |= SA_SHIRQ;
			if (cs->subtyp == DIVA_IPAC_ISA) {
				return(request_irq(cs->irq, &diva_interrupt_ipac,
						irq_flag, "HiSax", cs));
			} else {
				return(request_irq(cs->irq, &diva_interrupt,
						irq_flag, "HiSax", cs));
			}
		case CARD_INIT:
			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)
		diva_led_handler(cs);
	return(0);
}



static 	int pci_index __initdata = 0;

__initfunc(int
setup_diva(struct IsdnCard *card))
{
	int bytecnt;
	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) {
			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];
		bytecnt = 8;
	} else {
#if CONFIG_PCI
		u_char pci_bus, pci_device_fn, pci_irq;
		u_int pci_ioaddr;

		cs->subtyp = 0;
		for (; pci_index < 0xff; pci_index++) {
			if (pcibios_find_device(PCI_VENDOR_EICON_DIEHL,
			   PCI_DIVA20_ID, pci_index, &pci_bus, &pci_device_fn)
			   == PCIBIOS_SUCCESSFUL)
				cs->subtyp = DIVA_PCI;
			else if (pcibios_find_device(PCI_VENDOR_EICON_DIEHL,
			   PCI_DIVA20_ID, pci_index, &pci_bus, &pci_device_fn)
			   == PCIBIOS_SUCCESSFUL)
			   	cs->subtyp = DIVA_PCI;
			else
				break;
			/* get IRQ */
			pcibios_read_config_byte(pci_bus, pci_device_fn,
				PCI_INTERRUPT_LINE, &pci_irq);

			/* get IO address */
			pcibios_read_config_dword(pci_bus, pci_device_fn,
				PCI_BASE_ADDRESS_2, &pci_ioaddr);
			if (cs->subtyp)
				break;
		}
		if (!cs->subtyp) {
			printk(KERN_WARNING "Diva: No PCI card found\n");
			return(0);
		}
		pci_index++;
		if (!pci_irq) {
			printk(KERN_WARNING "Diva: No IRQ for PCI card found\n");
			return(0);
		}

		if (!pci_ioaddr) {
			printk(KERN_WARNING "Diva: No IO-Adr for PCI card found\n");
			return(0);
		}
		pci_ioaddr &= ~3; /* remove io/mem flag */
		cs->hw.diva.cfg_reg = pci_ioaddr;
		cs->hw.diva.ctrl = pci_ioaddr + DIVA_PCI_CTRL;
		cs->hw.diva.isac = pci_ioaddr + DIVA_PCI_ISAC_DATA;
		cs->hw.diva.hscx = pci_ioaddr + DIVA_HSCX_DATA;
		cs->hw.diva.isac_adr = pci_ioaddr + DIVA_PCI_ISAC_ADR;
		cs->hw.diva.hscx_adr = pci_ioaddr + DIVA_HSCX_ADR;
		cs->irq = pci_irq;
		bytecnt = 32;
#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 */
	}

	printk(KERN_INFO
		"Diva: %s card configured at 0x%x IRQ %d\n",
		(cs->subtyp == DIVA_PCI) ? "PCI" :
		(cs->subtyp == DIVA_ISA) ? "ISA" : "IPAC",
		cs->hw.diva.cfg_reg, cs->irq);
	if (check_region(cs->hw.diva.cfg_reg, bytecnt)) {
		printk(KERN_WARNING
		       "HiSax: %s config port %x-%x 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;
		val = readreg(cs->hw.diva.isac_adr, cs->hw.diva.isac, IPAC_ID);
		printk(KERN_INFO "Diva: IPAC version %x\n", val);
	} else {
		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;
		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);
}