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203d2027a1
The pnp_irq() function returns -1 if an error occurs. pnp_irq() error checking for zero is not correct. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
316 lines
8.1 KiB
C
316 lines
8.1 KiB
C
/* $Id: ix1_micro.c,v 2.12.2.4 2004/01/13 23:48:39 keil Exp $
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*
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* low level stuff for ITK ix1-micro Rev.2 isdn cards
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* derived from the original file teles3.c from Karsten Keil
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*
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* Author Klaus-Peter Nischke
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* Copyright by Klaus-Peter Nischke, ITK AG
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* <klaus@nischke.do.eunet.de>
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* by Karsten Keil <keil@isdn4linux.de>
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*
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*
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* Klaus-Peter Nischke
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* Deusener Str. 287
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* 44369 Dortmund
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* Germany
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*/
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#include <linux/init.h>
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#include <linux/isapnp.h>
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#include "hisax.h"
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#include "isac.h"
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#include "hscx.h"
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#include "isdnl1.h"
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static const char *ix1_revision = "$Revision: 2.12.2.4 $";
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#define byteout(addr, val) outb(val, addr)
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#define bytein(addr) inb(addr)
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#define SPECIAL_PORT_OFFSET 3
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#define ISAC_COMMAND_OFFSET 2
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#define ISAC_DATA_OFFSET 0
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#define HSCX_COMMAND_OFFSET 2
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#define HSCX_DATA_OFFSET 1
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#define TIMEOUT 50
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static inline u_char
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readreg(unsigned int ale, unsigned int adr, u_char off)
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{
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register u_char ret;
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byteout(ale, off);
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ret = bytein(adr);
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return (ret);
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}
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static inline void
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readfifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
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{
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byteout(ale, off);
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insb(adr, data, size);
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}
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static inline void
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writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
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{
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byteout(ale, off);
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byteout(adr, data);
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}
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static inline void
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writefifo(unsigned int ale, unsigned int adr, u_char off, u_char *data, int size)
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{
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byteout(ale, off);
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outsb(adr, data, size);
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}
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/* Interface functions */
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static u_char
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ReadISAC(struct IsdnCardState *cs, u_char offset)
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{
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return (readreg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, offset));
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}
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static void
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WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
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{
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writereg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, offset, value);
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}
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static void
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ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
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{
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readfifo(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, 0, data, size);
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}
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static void
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WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
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{
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writefifo(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, 0, data, size);
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}
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static u_char
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ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
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{
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return (readreg(cs->hw.ix1.hscx_ale,
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cs->hw.ix1.hscx, offset + (hscx ? 0x40 : 0)));
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}
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static void
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WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
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{
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writereg(cs->hw.ix1.hscx_ale,
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cs->hw.ix1.hscx, offset + (hscx ? 0x40 : 0), value);
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}
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#define READHSCX(cs, nr, reg) readreg(cs->hw.ix1.hscx_ale, \
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cs->hw.ix1.hscx, reg + (nr ? 0x40 : 0))
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#define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.ix1.hscx_ale, \
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cs->hw.ix1.hscx, reg + (nr ? 0x40 : 0), data)
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#define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.ix1.hscx_ale, \
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cs->hw.ix1.hscx, (nr ? 0x40 : 0), ptr, cnt)
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#define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.ix1.hscx_ale, \
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cs->hw.ix1.hscx, (nr ? 0x40 : 0), ptr, cnt)
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#include "hscx_irq.c"
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static irqreturn_t
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ix1micro_interrupt(int intno, void *dev_id)
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{
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struct IsdnCardState *cs = dev_id;
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u_char val;
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u_long flags;
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spin_lock_irqsave(&cs->lock, flags);
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val = readreg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_ISTA + 0x40);
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Start_HSCX:
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if (val)
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hscx_int_main(cs, val);
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val = readreg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, ISAC_ISTA);
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Start_ISAC:
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if (val)
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isac_interrupt(cs, val);
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val = readreg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_ISTA + 0x40);
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if (val) {
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if (cs->debug & L1_DEB_HSCX)
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debugl1(cs, "HSCX IntStat after IntRoutine");
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goto Start_HSCX;
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}
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val = readreg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, ISAC_ISTA);
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if (val) {
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if (cs->debug & L1_DEB_ISAC)
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debugl1(cs, "ISAC IntStat after IntRoutine");
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goto Start_ISAC;
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}
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writereg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_MASK, 0xFF);
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writereg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_MASK + 0x40, 0xFF);
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writereg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, ISAC_MASK, 0xFF);
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writereg(cs->hw.ix1.isac_ale, cs->hw.ix1.isac, ISAC_MASK, 0);
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writereg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_MASK, 0);
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writereg(cs->hw.ix1.hscx_ale, cs->hw.ix1.hscx, HSCX_MASK + 0x40, 0);
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spin_unlock_irqrestore(&cs->lock, flags);
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return IRQ_HANDLED;
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}
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static void
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release_io_ix1micro(struct IsdnCardState *cs)
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{
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if (cs->hw.ix1.cfg_reg)
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release_region(cs->hw.ix1.cfg_reg, 4);
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}
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static void
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ix1_reset(struct IsdnCardState *cs)
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{
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int cnt;
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/* reset isac */
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cnt = 3 * (HZ / 10) + 1;
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while (cnt--) {
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byteout(cs->hw.ix1.cfg_reg + SPECIAL_PORT_OFFSET, 1);
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HZDELAY(1); /* wait >=10 ms */
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}
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byteout(cs->hw.ix1.cfg_reg + SPECIAL_PORT_OFFSET, 0);
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}
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static int
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ix1_card_msg(struct IsdnCardState *cs, int mt, void *arg)
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{
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u_long flags;
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switch (mt) {
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case CARD_RESET:
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spin_lock_irqsave(&cs->lock, flags);
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ix1_reset(cs);
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spin_unlock_irqrestore(&cs->lock, flags);
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return (0);
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case CARD_RELEASE:
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release_io_ix1micro(cs);
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return (0);
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case CARD_INIT:
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spin_lock_irqsave(&cs->lock, flags);
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ix1_reset(cs);
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inithscxisac(cs, 3);
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spin_unlock_irqrestore(&cs->lock, flags);
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return (0);
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case CARD_TEST:
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return (0);
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}
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return (0);
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}
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#ifdef __ISAPNP__
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static struct isapnp_device_id itk_ids[] = {
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{ ISAPNP_VENDOR('I', 'T', 'K'), ISAPNP_FUNCTION(0x25),
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ISAPNP_VENDOR('I', 'T', 'K'), ISAPNP_FUNCTION(0x25),
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(unsigned long) "ITK micro 2" },
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{ ISAPNP_VENDOR('I', 'T', 'K'), ISAPNP_FUNCTION(0x29),
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ISAPNP_VENDOR('I', 'T', 'K'), ISAPNP_FUNCTION(0x29),
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(unsigned long) "ITK micro 2." },
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{ 0, }
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};
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static struct isapnp_device_id *ipid = &itk_ids[0];
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static struct pnp_card *pnp_c = NULL;
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#endif
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int setup_ix1micro(struct IsdnCard *card)
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{
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struct IsdnCardState *cs = card->cs;
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char tmp[64];
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strcpy(tmp, ix1_revision);
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printk(KERN_INFO "HiSax: ITK IX1 driver Rev. %s\n", HiSax_getrev(tmp));
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if (cs->typ != ISDN_CTYPE_IX1MICROR2)
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return (0);
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#ifdef __ISAPNP__
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if (!card->para[1] && isapnp_present()) {
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struct pnp_dev *pnp_d;
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while (ipid->card_vendor) {
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if ((pnp_c = pnp_find_card(ipid->card_vendor,
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ipid->card_device, pnp_c))) {
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pnp_d = NULL;
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if ((pnp_d = pnp_find_dev(pnp_c,
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ipid->vendor, ipid->function, pnp_d))) {
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int err;
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printk(KERN_INFO "HiSax: %s detected\n",
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(char *)ipid->driver_data);
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pnp_disable_dev(pnp_d);
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err = pnp_activate_dev(pnp_d);
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if (err < 0) {
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printk(KERN_WARNING "%s: pnp_activate_dev ret(%d)\n",
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__func__, err);
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return (0);
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}
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card->para[1] = pnp_port_start(pnp_d, 0);
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card->para[0] = pnp_irq(pnp_d, 0);
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if (card->para[0] == -1 || !card->para[1]) {
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printk(KERN_ERR "ITK PnP:some resources are missing %ld/%lx\n",
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card->para[0], card->para[1]);
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pnp_disable_dev(pnp_d);
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return (0);
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}
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break;
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} else {
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printk(KERN_ERR "ITK PnP: PnP error card found, no device\n");
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}
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}
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ipid++;
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pnp_c = NULL;
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}
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if (!ipid->card_vendor) {
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printk(KERN_INFO "ITK PnP: no ISAPnP card found\n");
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return (0);
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}
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}
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#endif
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/* IO-Ports */
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cs->hw.ix1.isac_ale = card->para[1] + ISAC_COMMAND_OFFSET;
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cs->hw.ix1.hscx_ale = card->para[1] + HSCX_COMMAND_OFFSET;
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cs->hw.ix1.isac = card->para[1] + ISAC_DATA_OFFSET;
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cs->hw.ix1.hscx = card->para[1] + HSCX_DATA_OFFSET;
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cs->hw.ix1.cfg_reg = card->para[1];
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cs->irq = card->para[0];
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if (cs->hw.ix1.cfg_reg) {
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if (!request_region(cs->hw.ix1.cfg_reg, 4, "ix1micro cfg")) {
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printk(KERN_WARNING
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"HiSax: ITK ix1-micro Rev.2 config port "
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"%x-%x already in use\n",
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cs->hw.ix1.cfg_reg,
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cs->hw.ix1.cfg_reg + 4);
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return (0);
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}
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}
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printk(KERN_INFO "HiSax: ITK ix1-micro Rev.2 config irq:%d io:0x%X\n",
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cs->irq, cs->hw.ix1.cfg_reg);
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setup_isac(cs);
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cs->readisac = &ReadISAC;
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cs->writeisac = &WriteISAC;
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cs->readisacfifo = &ReadISACfifo;
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cs->writeisacfifo = &WriteISACfifo;
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cs->BC_Read_Reg = &ReadHSCX;
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cs->BC_Write_Reg = &WriteHSCX;
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cs->BC_Send_Data = &hscx_fill_fifo;
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cs->cardmsg = &ix1_card_msg;
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cs->irq_func = &ix1micro_interrupt;
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ISACVersion(cs, "ix1-Micro:");
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if (HscxVersion(cs, "ix1-Micro:")) {
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printk(KERN_WARNING
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"ix1-Micro: wrong HSCX versions check IO address\n");
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release_io_ix1micro(cs);
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return (0);
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}
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return (1);
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}
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