[mirror_ubuntu-bionic-kernel.git] / drivers / isdn / hisax / mic.c

/* $Id: mic.c,v 1.12.2.4 2004/01/13 23:48:39 keil Exp $
 *
 * low level stuff for mic cards
 *
 * Author       Stephan von Krawczynski
 * Copyright    by Stephan von Krawczynski <skraw@ithnet.com>
 *
 * 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 "isdnl1.h"

static const char *mic_revision = "$Revision: 1.12.2.4 $";

#define byteout(addr, val) outb(val, addr)
#define bytein(addr) inb(addr)

#define MIC_ISAC	2
#define MIC_HSCX	1
#define MIC_ADR		7

/* CARD_ADR (Write) */
#define MIC_RESET      0x3	/* same as DOS driver */

static inline u_char
readreg(unsigned int ale, unsigned int adr, u_char off)
{
	register u_char ret;

	byteout(ale, off);
	ret = bytein(adr);
	return (ret);
}

static inline void
readfifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
{
	byteout(ale, off);
	insb(adr, data, size);
}


static inline void
writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
{
	byteout(ale, off);
	byteout(adr, data);
}

static inline void
writefifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
{
	byteout(ale, off);
	outsb(adr, data, size);
}

/* Interface functions */

static u_char
ReadISAC(struct IsdnCardState *cs, u_char offset)
{
	return (readreg(cs->hw.mic.adr, cs->hw.mic.isac, offset));
}

static void
WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
{
	writereg(cs->hw.mic.adr, cs->hw.mic.isac, offset, value);
}

static void
ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
{
	readfifo(cs->hw.mic.adr, cs->hw.mic.isac, 0, data, size);
}

static void
WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
{
	writefifo(cs->hw.mic.adr, cs->hw.mic.isac, 0, data, size);
}

static u_char
ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
{
	return (readreg(cs->hw.mic.adr,
			cs->hw.mic.hscx, offset + (hscx ? 0x40 : 0)));
}

static void
WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
{
	writereg(cs->hw.mic.adr,
		 cs->hw.mic.hscx, offset + (hscx ? 0x40 : 0), value);
}

/*
 * fast interrupt HSCX stuff goes here
 */

#define READHSCX(cs, nr, reg) readreg(cs->hw.mic.adr,			\
				      cs->hw.mic.hscx, reg + (nr ? 0x40 : 0))
#define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.mic.adr,		\
					      cs->hw.mic.hscx, reg + (nr ? 0x40 : 0), data)

#define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.mic.adr,		\
						cs->hw.mic.hscx, (nr ? 0x40 : 0), ptr, cnt)

#define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.mic.adr,	\
						  cs->hw.mic.hscx, (nr ? 0x40 : 0), ptr, cnt)

#include "hscx_irq.c"

static irqreturn_t
mic_interrupt(int intno, void *dev_id)
{
	struct IsdnCardState *cs = dev_id;
	u_char val;
	u_long flags;

	spin_lock_irqsave(&cs->lock, flags);
	val = readreg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_ISTA + 0x40);
Start_HSCX:
	if (val)
		hscx_int_main(cs, val);
	val = readreg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_ISTA);
Start_ISAC:
	if (val)
		isac_interrupt(cs, val);
	val = readreg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_ISTA + 0x40);
	if (val) {
		if (cs->debug & L1_DEB_HSCX)
			debugl1(cs, "HSCX IntStat after IntRoutine");
		goto Start_HSCX;
	}
	val = readreg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_ISTA);
	if (val) {
		if (cs->debug & L1_DEB_ISAC)
			debugl1(cs, "ISAC IntStat after IntRoutine");
		goto Start_ISAC;
	}
	writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK, 0xFF);
	writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK + 0x40, 0xFF);
	writereg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_MASK, 0xFF);
	writereg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_MASK, 0x0);
	writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK, 0x0);
	writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK + 0x40, 0x0);
	spin_unlock_irqrestore(&cs->lock, flags);
	return IRQ_HANDLED;
}

static void
release_io_mic(struct IsdnCardState *cs)
{
	int bytecnt = 8;

	if (cs->hw.mic.cfg_reg)
		release_region(cs->hw.mic.cfg_reg, bytecnt);
}

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

	switch (mt) {
	case CARD_RESET:
		return (0);
	case CARD_RELEASE:
		release_io_mic(cs);
		return (0);
	case CARD_INIT:
		spin_lock_irqsave(&cs->lock, flags);
		inithscx(cs); /* /RTSA := ISAC RST */
		inithscxisac(cs, 3);
		spin_unlock_irqrestore(&cs->lock, flags);
		return (0);
	case CARD_TEST:
		return (0);
	}
	return (0);
}

int setup_mic(struct IsdnCard *card)
{
	int bytecnt;
	struct IsdnCardState *cs = card->cs;
	char tmp[64];

	strcpy(tmp, mic_revision);
	printk(KERN_INFO "HiSax: mic driver Rev. %s\n", HiSax_getrev(tmp));
	if (cs->typ != ISDN_CTYPE_MIC)
		return (0);

	bytecnt = 8;
	cs->hw.mic.cfg_reg = card->para[1];
	cs->irq = card->para[0];
	cs->hw.mic.adr = cs->hw.mic.cfg_reg + MIC_ADR;
	cs->hw.mic.isac = cs->hw.mic.cfg_reg + MIC_ISAC;
	cs->hw.mic.hscx = cs->hw.mic.cfg_reg + MIC_HSCX;

	if (!request_region(cs->hw.mic.cfg_reg, bytecnt, "mic isdn")) {
		printk(KERN_WARNING
		       "HiSax: ith mic config port %x-%x already in use\n",
		       cs->hw.mic.cfg_reg,
		       cs->hw.mic.cfg_reg + bytecnt);
		return (0);
	}
	printk(KERN_INFO "mic: defined at 0x%x IRQ %d\n",
	       cs->hw.mic.cfg_reg, cs->irq);
	setup_isac(cs);
	cs->readisac = &ReadISAC;
	cs->writeisac = &WriteISAC;
	cs->readisacfifo = &ReadISACfifo;
	cs->writeisacfifo = &WriteISACfifo;
	cs->BC_Read_Reg = &ReadHSCX;
	cs->BC_Write_Reg = &WriteHSCX;
	cs->BC_Send_Data = &hscx_fill_fifo;
	cs->cardmsg = &mic_card_msg;
	cs->irq_func = &mic_interrupt;
	ISACVersion(cs, "mic:");
	if (HscxVersion(cs, "mic:")) {
		printk(KERN_WARNING
		       "mic: wrong HSCX versions check IO address\n");
		release_io_mic(cs);
		return (0);
	}
	return (1);
}
Commit	Line	Data
1da177e4 LT	1	/* $Id: mic.c,v 1.12.2.4 2004/01/13 23:48:39 keil Exp $
	2	*
	3	* low level stuff for mic cards
	4	*
	5	* Author Stephan von Krawczynski
	6	* Copyright by Stephan von Krawczynski <skraw@ithnet.com>
475be4d8	7	*
1da177e4 LT	8	* This software may be used and distributed according to the terms
	9	* of the GNU General Public License, incorporated herein by reference.
	10	*
	11	*/
	12
	13	#include <linux/init.h>
	14	#include "hisax.h"
	15	#include "isac.h"
	16	#include "hscx.h"
	17	#include "isdnl1.h"
	18
672c3fd9	19	static const char *mic_revision = "$Revision: 1.12.2.4 $";
1da177e4	20
475be4d8	21	#define byteout(addr, val) outb(val, addr)
1da177e4 LT	22	#define bytein(addr) inb(addr)
	23
	24	#define MIC_ISAC 2
	25	#define MIC_HSCX 1
	26	#define MIC_ADR 7
	27
	28	/* CARD_ADR (Write) */
	29	#define MIC_RESET 0x3 /* same as DOS driver */
	30
	31	static inline u_char
	32	readreg(unsigned int ale, unsigned int adr, u_char off)
	33	{
	34	register u_char ret;
	35
	36	byteout(ale, off);
	37	ret = bytein(adr);
	38	return (ret);
	39	}
	40
	41	static inline void
475be4d8	42	readfifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
1da177e4 LT	43	{
	44	byteout(ale, off);
	45	insb(adr, data, size);
	46	}
	47
	48
	49	static inline void
	50	writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
	51	{
	52	byteout(ale, off);
	53	byteout(adr, data);
	54	}
	55
	56	static inline void
475be4d8	57	writefifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
1da177e4 LT	58	{
	59	byteout(ale, off);
	60	outsb(adr, data, size);
	61	}
	62
	63	/* Interface functions */
	64
	65	static u_char
	66	ReadISAC(struct IsdnCardState *cs, u_char offset)
	67	{
	68	return (readreg(cs->hw.mic.adr, cs->hw.mic.isac, offset));
	69	}
	70
	71	static void
	72	WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
	73	{
	74	writereg(cs->hw.mic.adr, cs->hw.mic.isac, offset, value);
	75	}
	76
	77	static void
475be4d8	78	ReadISACfifo(struct IsdnCardState cs, u_char data, int size)
1da177e4 LT	79	{
	80	readfifo(cs->hw.mic.adr, cs->hw.mic.isac, 0, data, size);
	81	}
	82
	83	static void
475be4d8	84	WriteISACfifo(struct IsdnCardState cs, u_char data, int size)
1da177e4 LT	85	{
	86	writefifo(cs->hw.mic.adr, cs->hw.mic.isac, 0, data, size);
	87	}
	88
	89	static u_char
	90	ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
	91	{
	92	return (readreg(cs->hw.mic.adr,
	93	cs->hw.mic.hscx, offset + (hscx ? 0x40 : 0)));
	94	}
	95
	96	static void
	97	WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
	98	{
	99	writereg(cs->hw.mic.adr,
	100	cs->hw.mic.hscx, offset + (hscx ? 0x40 : 0), value);
	101	}
	102
	103	/*
	104	* fast interrupt HSCX stuff goes here
	105	*/
	106
475be4d8 JP	107	#define READHSCX(cs, nr, reg) readreg(cs->hw.mic.adr, \
	108	cs->hw.mic.hscx, reg + (nr ? 0x40 : 0))
	109	#define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.mic.adr, \
	110	cs->hw.mic.hscx, reg + (nr ? 0x40 : 0), data)
1da177e4	111
475be4d8 JP	112	#define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.mic.adr, \
475be4d8 JP	113	cs->hw.mic.hscx, (nr ? 0x40 : 0), ptr, cnt)
1da177e4	114
475be4d8 JP	115	#define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.mic.adr, \
475be4d8 JP	116	cs->hw.mic.hscx, (nr ? 0x40 : 0), ptr, cnt)
1da177e4 LT	117
	118	#include "hscx_irq.c"
	119
	120	static irqreturn_t
7d12e780	121	mic_interrupt(int intno, void *dev_id)
1da177e4 LT	122	{
	123	struct IsdnCardState *cs = dev_id;
	124	u_char val;
	125	u_long flags;
	126
	127	spin_lock_irqsave(&cs->lock, flags);
	128	val = readreg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_ISTA + 0x40);
475be4d8	129	Start_HSCX:
1da177e4 LT	130	if (val)
	131	hscx_int_main(cs, val);
	132	val = readreg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_ISTA);
475be4d8	133	Start_ISAC:
1da177e4 LT	134	if (val)
	135	isac_interrupt(cs, val);
	136	val = readreg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_ISTA + 0x40);
	137	if (val) {
	138	if (cs->debug & L1_DEB_HSCX)
	139	debugl1(cs, "HSCX IntStat after IntRoutine");
	140	goto Start_HSCX;
	141	}
	142	val = readreg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_ISTA);
	143	if (val) {
	144	if (cs->debug & L1_DEB_ISAC)
	145	debugl1(cs, "ISAC IntStat after IntRoutine");
	146	goto Start_ISAC;
	147	}
	148	writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK, 0xFF);
	149	writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK + 0x40, 0xFF);
	150	writereg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_MASK, 0xFF);
	151	writereg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_MASK, 0x0);
	152	writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK, 0x0);
	153	writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK + 0x40, 0x0);
	154	spin_unlock_irqrestore(&cs->lock, flags);
	155	return IRQ_HANDLED;
	156	}
	157
672c3fd9	158	static void
1da177e4 LT	159	release_io_mic(struct IsdnCardState *cs)
	160	{
	161	int bytecnt = 8;
	162
	163	if (cs->hw.mic.cfg_reg)
	164	release_region(cs->hw.mic.cfg_reg, bytecnt);
	165	}
	166
	167	static int
	168	mic_card_msg(struct IsdnCardState cs, int mt, void arg)
	169	{
	170	u_long flags;
	171
	172	switch (mt) {
475be4d8 JP	173	case CARD_RESET:
	174	return (0);
	175	case CARD_RELEASE:
	176	release_io_mic(cs);
	177	return (0);
	178	case CARD_INIT:
	179	spin_lock_irqsave(&cs->lock, flags);
	180	inithscx(cs); /* /RTSA := ISAC RST */
	181	inithscxisac(cs, 3);
	182	spin_unlock_irqrestore(&cs->lock, flags);
	183	return (0);
	184	case CARD_TEST:
	185	return (0);
1da177e4	186	}
475be4d8	187	return (0);
1da177e4 LT	188	}
1da177e4 LT	189
ed5a84cd	190	int setup_mic(struct IsdnCard *card)
1da177e4 LT	191	{
	192	int bytecnt;
	193	struct IsdnCardState *cs = card->cs;
	194	char tmp[64];
	195
	196	strcpy(tmp, mic_revision);
	197	printk(KERN_INFO "HiSax: mic driver Rev. %s\n", HiSax_getrev(tmp));
	198	if (cs->typ != ISDN_CTYPE_MIC)
	199	return (0);
	200
	201	bytecnt = 8;
	202	cs->hw.mic.cfg_reg = card->para[1];
	203	cs->irq = card->para[0];
	204	cs->hw.mic.adr = cs->hw.mic.cfg_reg + MIC_ADR;
	205	cs->hw.mic.isac = cs->hw.mic.cfg_reg + MIC_ISAC;
	206	cs->hw.mic.hscx = cs->hw.mic.cfg_reg + MIC_HSCX;
	207
	208	if (!request_region(cs->hw.mic.cfg_reg, bytecnt, "mic isdn")) {
	209	printk(KERN_WARNING
8349304d	210	"HiSax: ith mic config port %x-%x already in use\n",
1da177e4 LT	211	cs->hw.mic.cfg_reg,
	212	cs->hw.mic.cfg_reg + bytecnt);
	213	return (0);
	214	}
	215	printk(KERN_INFO "mic: defined at 0x%x IRQ %d\n",
475be4d8	216	cs->hw.mic.cfg_reg, cs->irq);
1da177e4 LT	217	setup_isac(cs);
	218	cs->readisac = &ReadISAC;
	219	cs->writeisac = &WriteISAC;
	220	cs->readisacfifo = &ReadISACfifo;
	221	cs->writeisacfifo = &WriteISACfifo;
	222	cs->BC_Read_Reg = &ReadHSCX;
	223	cs->BC_Write_Reg = &WriteHSCX;
	224	cs->BC_Send_Data = &hscx_fill_fifo;
	225	cs->cardmsg = &mic_card_msg;
	226	cs->irq_func = &mic_interrupt;
	227	ISACVersion(cs, "mic:");
	228	if (HscxVersion(cs, "mic:")) {
	229	printk(KERN_WARNING
475be4d8	230	"mic: wrong HSCX versions check IO address\n");
1da177e4 LT	231	release_io_mic(cs);
	232	return (0);
	233	}
	234	return (1);
	235	}