Release 4.14 drivers/isdn/hisax/bkm_a4t.c

/* $Id: bkm_a4t.c,v 1.22.2.4 2004/01/14 16:04:48 keil Exp $
 *
 * low level stuff for T-Berkom A4T
 *
 * Author       Roland Klabunde
 * Copyright    by Roland Klabunde   <R.Klabunde@Berkom.de>
 *
 * 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 "isac.h"
#include "hscx.h"
#include "jade.h"
#include "isdnl1.h"
#include <linux/pci.h>
#include "bkm_ax.h"


static const char *bkm_a4t_revision = "$Revision: 1.22.2.4 $";



static inline u_char

readreg(unsigned int ale, unsigned long adr, u_char off)
{
	register u_int ret;
	unsigned int *po = (unsigned int *) adr;	/* Postoffice */

	*po = (GCS_2 | PO_WRITE | off);
	__WAITI20__(po);
	*po = (ale | PO_READ);
	__WAITI20__(po);
	ret = *po;
	return ((unsigned char) ret);
}


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3
3.80%
1
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Kai Germaschewski
1
1.27%
1
25.00%
Linus Torvalds
1
1.27%
1
25.00%
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79
100.00%
4
100.00%


static inline void

readfifo(unsigned int ale, unsigned long adr, u_char off, u_char *data, int size)
{
	int i;
	for (i = 0; i < size; i++)
		*data++ = readreg(ale, adr, off);
}


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33.33%
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16
29.63%
1
33.33%
Linus Torvalds
1
1.85%
1
33.33%
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54
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3
100.00%


static inline void

writereg(unsigned int ale, unsigned long adr, u_char off, u_char data)
{
	unsigned int *po = (unsigned int *) adr;	/* Postoffice */
	*po = (GCS_2 | PO_WRITE | off);
	__WAITI20__(po);
	*po = (ale | PO_WRITE | data);
	__WAITI20__(po);
}


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18
27.27%
1
25.00%
Kai Germaschewski
2
3.03%
2
50.00%
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66
100.00%
4
100.00%


static inline void

writefifo(unsigned int ale, unsigned long adr, u_char off, u_char *data, int size)
{
	int i;

	for (i = 0; i < size; i++)
		writereg(ale, adr, off, *data++);
}


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48
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25.00%
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3
5.56%
1
25.00%
Andrew Morton
2
3.70%
1
25.00%
Linus Torvalds
1
1.85%
1
25.00%
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54
100.00%
4
100.00%

/* Interface functions */


static u_char

ReadISAC(struct IsdnCardState *cs, u_char offset)
{
	return (readreg(cs->hw.ax.isac_ale, cs->hw.ax.isac_adr, offset));
}

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7.89%
1
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38
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2
100.00%


static void

WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
{
	writereg(cs->hw.ax.isac_ale, cs->hw.ax.isac_adr, offset, value);
}

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3
7.50%
1
50.00%
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40
100.00%
2
100.00%


static void

ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
{
	readfifo(cs->hw.ax.isac_ale, cs->hw.ax.isac_adr, 0, data, size);
}

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1
50.00%
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43
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2
100.00%


static void

WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
{
	writefifo(cs->hw.ax.isac_ale, cs->hw.ax.isac_adr, 0, data, size);
}

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2
4.65%
1
50.00%
Total
43
100.00%
2
100.00%


static u_char

ReadJADE(struct IsdnCardState *cs, int jade, u_char offset)
{
	return (readreg(cs->hw.ax.jade_ale, cs->hw.ax.jade_adr, offset + (jade == -1 ? 0 : (jade ? 0xC0 : 0x80))));
}

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1
50.00%
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58
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100.00%


static void

WriteJADE(struct IsdnCardState *cs, int jade, u_char offset, u_char value)
{
	writereg(cs->hw.ax.jade_ale, cs->hw.ax.jade_adr, offset + (jade == -1 ? 0 : (jade ? 0xC0 : 0x80)), value);
}

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3
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1
50.00%
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60
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2
100.00%

/*
 * fast interrupt JADE stuff goes here
 */


#define READJADE(cs, nr, reg) readreg(cs->hw.ax.jade_ale,             \
                                      cs->hw.ax.jade_adr, reg + (nr == -1 ? 0 : (nr ? 0xC0 : 0x80)))

#define WRITEJADE(cs, nr, reg, data) writereg(cs->hw.ax.jade_ale,    \
                                              cs->hw.ax.jade_adr, reg + (nr == -1 ? 0 : (nr ? 0xC0 : 0x80)), data)


#define READJADEFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.ax.jade_ale,    \
                                                cs->hw.ax.jade_adr, (nr == -1 ? 0 : (nr ? 0xC0 : 0x80)), ptr, cnt)

#define WRITEJADEFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.ax.jade_ale,   \
                                                  cs->hw.ax.jade_adr, (nr == -1 ? 0 : (nr ? 0xC0 : 0x80)), ptr, cnt)

#include "jade_irq.c"


static irqreturn_t

bkm_interrupt(int intno, void *dev_id)
{
	struct IsdnCardState *cs = dev_id;
	u_char val = 0;
	u_long flags;
	I20_REGISTER_FILE *pI20_Regs;

	spin_lock_irqsave(&cs->lock, flags);
	pI20_Regs = (I20_REGISTER_FILE *) (cs->hw.ax.base);

	/* ISDN interrupt pending? */
	if (pI20_Regs->i20IntStatus & intISDN) {
		/* Reset the ISDN interrupt     */
		pI20_Regs->i20IntStatus = intISDN;
		/* Disable ISDN interrupt */
		pI20_Regs->i20IntCtrl &= ~intISDN;
		/* Channel A first */
		val = readreg(cs->hw.ax.jade_ale, cs->hw.ax.jade_adr, jade_HDLC_ISR + 0x80);
		if (val) {
			jade_int_main(cs, val, 0);
		}
		/* Channel B  */
		val = readreg(cs->hw.ax.jade_ale, cs->hw.ax.jade_adr, jade_HDLC_ISR + 0xC0);
		if (val) {
			jade_int_main(cs, val, 1);
		}
		/* D-Channel */
		val = readreg(cs->hw.ax.isac_ale, cs->hw.ax.isac_adr, ISAC_ISTA);
		if (val) {
			isac_interrupt(cs, val);
		}
		/* Reenable ISDN interrupt */
		pI20_Regs->i20IntCtrl |= intISDN;
		spin_unlock_irqrestore(&cs->lock, flags);
		return IRQ_HANDLED;
	} else {
		spin_unlock_irqrestore(&cs->lock, flags);
		return IRQ_NONE;
	}
}

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31
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2
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11
4.60%
1
25.00%
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239
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4
100.00%


static void

release_io_bkm(struct IsdnCardState *cs)
{
	if (cs->hw.ax.base) {
		iounmap((void *) cs->hw.ax.base);
		cs->hw.ax.base = 0;
	}
}

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48
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100.00%


static void

enable_bkm_int(struct IsdnCardState *cs, unsigned bEnable)
{
	if (cs->typ == ISDN_CTYPE_BKM_A4T) {
		I20_REGISTER_FILE *pI20_Regs = (I20_REGISTER_FILE *) (cs->hw.ax.base);
		if (bEnable)
			pI20_Regs->i20IntCtrl |= (intISDN | intPCI);
		else
			/* CAUTION: This disables the video capture driver too */
			pI20_Regs->i20IntCtrl &= ~(intISDN | intPCI);
	}
}

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10
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1
50.00%
Total
69
100.00%
2
100.00%


static void

reset_bkm(struct IsdnCardState *cs)
{
	if (cs->typ == ISDN_CTYPE_BKM_A4T) {
		I20_REGISTER_FILE *pI20_Regs = (I20_REGISTER_FILE *) (cs->hw.ax.base);
		/* Issue the I20 soft reset     */
		pI20_Regs->i20SysControl = 0xFF;	/* all in */
		mdelay(10);
		/* Remove the soft reset */
		pI20_Regs->i20SysControl = sysRESET | 0xFF;
		mdelay(10);
		/* Set our configuration */
		pI20_Regs->i20SysControl = sysRESET | sysCFG;
		/* Issue ISDN reset     */
		pI20_Regs->i20GuestControl = guestWAIT_CFG |
			g_A4T_JADE_RES |
			g_A4T_ISAR_RES |
			g_A4T_ISAC_RES |
			g_A4T_JADE_BOOTR |
			g_A4T_ISAR_BOOTR;
		mdelay(10);

		/* Remove RESET state from ISDN */
		pI20_Regs->i20GuestControl &= ~(g_A4T_ISAC_RES |
						g_A4T_JADE_RES |
						g_A4T_ISAR_RES);
		mdelay(10);
	}
}

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116
100.00%
2
100.00%


static int

BKM_card_msg(struct IsdnCardState *cs, int mt, void *arg)
{
	u_long flags;

	switch (mt) {
	case CARD_RESET:
		/* Disable ints */
		spin_lock_irqsave(&cs->lock, flags);
		enable_bkm_int(cs, 0);
		reset_bkm(cs);
		spin_unlock_irqrestore(&cs->lock, flags);
		return (0);
	case CARD_RELEASE:
		/* Sanity */
		spin_lock_irqsave(&cs->lock, flags);
		enable_bkm_int(cs, 0);
		reset_bkm(cs);
		spin_unlock_irqrestore(&cs->lock, flags);
		release_io_bkm(cs);
		return (0);
	case CARD_INIT:
		spin_lock_irqsave(&cs->lock, flags);
		clear_pending_isac_ints(cs);
		clear_pending_jade_ints(cs);
		initisac(cs);
		initjade(cs);
		/* Enable ints */
		enable_bkm_int(cs, 1);
		spin_unlock_irqrestore(&cs->lock, flags);
		return (0);
	case CARD_TEST:
		return (0);
	}
	return (0);
}

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29
15.85%
1
25.00%
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8
4.37%
2
50.00%
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183
100.00%
4
100.00%



static int a4t_pci_probe(struct pci_dev *dev_a4t, struct IsdnCardState *cs,
			 u_int *found, u_int *pci_memaddr)
{
	u16 sub_sys;
	u16 sub_vendor;

	sub_vendor = dev_a4t->subsystem_vendor;
	sub_sys = dev_a4t->subsystem_device;
	if ((sub_sys == PCI_DEVICE_ID_BERKOM_A4T) && (sub_vendor == PCI_VENDOR_ID_BERKOM)) {
		if (pci_enable_device(dev_a4t))
			return (0);	/* end loop & function */
		*found = 1;
		*pci_memaddr = pci_resource_start(dev_a4t, 0);
		cs->irq = dev_a4t->irq;
		return (1);		/* end loop */
	}

	return (-1);			/* continue looping */
}

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23
21.50%
1
16.67%
Linus Torvalds (pre-git)
20
18.69%
3
50.00%
Kai Germaschewski
1
0.93%
1
16.67%
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107
100.00%
6
100.00%



static int a4t_cs_init(struct IsdnCard *card, struct IsdnCardState *cs,
		       u_int pci_memaddr)
{
	I20_REGISTER_FILE *pI20_Regs;

	if (!cs->irq) {		/* IRQ range check ?? */
		printk(KERN_WARNING "HiSax: Telekom A4T: No IRQ\n");
		return (0);
	}
	cs->hw.ax.base = (long) ioremap(pci_memaddr, 4096);
	/* Check suspecious address */
	pI20_Regs = (I20_REGISTER_FILE *) (cs->hw.ax.base);
	if ((pI20_Regs->i20IntStatus & 0x8EFFFFFF) != 0) {
		printk(KERN_WARNING "HiSax: Telekom A4T address "
		       "%lx-%lx suspicious\n",
		       cs->hw.ax.base, cs->hw.ax.base + 4096);
		iounmap((void *) cs->hw.ax.base);
		cs->hw.ax.base = 0;
		return (0);
	}
	cs->hw.ax.isac_adr = cs->hw.ax.base + PO_OFFSET;
	cs->hw.ax.jade_adr = cs->hw.ax.base + PO_OFFSET;
	cs->hw.ax.isac_ale = GCS_1;
	cs->hw.ax.jade_ale = GCS_3;

	printk(KERN_INFO "HiSax: Telekom A4T: Card configured at "
	       "0x%lX IRQ %d\n",
	       cs->hw.ax.base, cs->irq);

	setup_isac(cs);
	cs->readisac = &ReadISAC;
	cs->writeisac = &WriteISAC;
	cs->readisacfifo = &ReadISACfifo;
	cs->writeisacfifo = &WriteISACfifo;
	cs->BC_Read_Reg = &ReadJADE;
	cs->BC_Write_Reg = &WriteJADE;
	cs->BC_Send_Data = &jade_fill_fifo;
	cs->cardmsg = &BKM_card_msg;
	cs->irq_func = &bkm_interrupt;
	cs->irq_flags |= IRQF_SHARED;
	ISACVersion(cs, "Telekom A4T:");
	/* Jade version */
	JadeVersion(cs, "Telekom A4T:");

	return (1);
}

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161
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1
12.50%
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79
24.92%
1
12.50%
Kai Germaschewski
49
15.46%
3
37.50%
Jeff Garzik
27
8.52%
2
25.00%
Thomas Gleixner
1
0.32%
1
12.50%
Total
317
100.00%
8
100.00%


static struct pci_dev *dev_a4t = NULL;



int setup_bkm_a4t(struct IsdnCard *card)
{
	struct IsdnCardState *cs = card->cs;
	char tmp[64];
	u_int pci_memaddr = 0, found = 0;
	int ret;

	strcpy(tmp, bkm_a4t_revision);
	printk(KERN_INFO "HiSax: T-Berkom driver Rev. %s\n", HiSax_getrev(tmp));
	if (cs->typ == ISDN_CTYPE_BKM_A4T) {
		cs->subtyp = BKM_A4T;
	} else
		return (0);

	while ((dev_a4t = hisax_find_pci_device(PCI_VENDOR_ID_ZORAN,
						PCI_DEVICE_ID_ZORAN_36120, dev_a4t))) {
		ret = a4t_pci_probe(dev_a4t, cs, &found, &pci_memaddr);
		if (!ret)
			return (0);
		if (ret > 0)
			break;
	}
	if (!found) {
		printk(KERN_WARNING "HiSax: Telekom A4T: Card not found\n");
		return (0);
	}
	if (!pci_memaddr) {
		printk(KERN_WARNING "HiSax: Telekom A4T: "
		       "No Memory base address\n");
		return (0);
	}

	return a4t_cs_init(card, cs, pci_memaddr);
}
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171
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1
0.58%
1
25.00%
Greg Kroah-Hartman
1
0.58%
1
25.00%
Total
173
100.00%
4
100.00%

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964
51.19%
4
17.39%
Andrew Morton
588
31.23%
2
8.70%
Jeff Garzik
229
12.16%
2
8.70%
Kai Germaschewski
89
4.73%
9
39.13%
Joe Perches
5
0.27%
1
4.35%
Linus Torvalds
3
0.16%
1
4.35%
Adrian Bunk
2
0.11%
1
4.35%
Thomas Gleixner
1
0.05%
1
4.35%
Tilman Schmidt
1
0.05%
1
4.35%
Greg Kroah-Hartman
1
0.05%
1
4.35%
Total
1883
100.00%
23
100.00%
Directory: drivers/isdn/hisax

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