mic.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:6k
- /* $Id: mic.c,v 1.1.4.1 2001/11/20 14:19:36 kai 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.
- *
- */
- #define __NO_VERSION__
- #include <linux/init.h>
- #include "hisax.h"
- #include "isac.h"
- #include "hscx.h"
- #include "isdnl1.h"
- extern const char *CardType[];
- const char *mic_revision = "$Revision: 1.1.4.1 $";
- #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;
- long flags;
- save_flags(flags);
- cli();
- byteout(ale, off);
- ret = bytein(adr);
- restore_flags(flags);
- return (ret);
- }
- static inline void
- readfifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
- {
- /* fifo read without cli because it's allready done */
- byteout(ale, off);
- insb(adr, data, size);
- }
- static inline void
- writereg(unsigned int ale, unsigned int adr, u_char off, u_char data)
- {
- long flags;
- save_flags(flags);
- cli();
- byteout(ale, off);
- byteout(adr, data);
- restore_flags(flags);
- }
- static inline void
- writefifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size)
- {
- /* fifo write without cli because it's allready done */
- 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 void
- mic_interrupt(int intno, void *dev_id, struct pt_regs *regs)
- {
- struct IsdnCardState *cs = dev_id;
- u_char val;
- if (!cs) {
- printk(KERN_WARNING "mic: Spurious interrupt!n");
- return;
- }
- 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);
- }
- 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)
- {
- switch (mt) {
- case CARD_RESET:
- return(0);
- case CARD_RELEASE:
- release_io_mic(cs);
- return(0);
- case CARD_INIT:
- inithscx(cs); /* /RTSA := ISAC RST */
- inithscxisac(cs, 3);
- return(0);
- case CARD_TEST:
- return(0);
- }
- return(0);
- }
- int __init
- 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. %sn", 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 (check_region((cs->hw.mic.cfg_reg), bytecnt)) {
- printk(KERN_WARNING
- "HiSax: %s config port %x-%x already in usen",
- CardType[card->typ],
- cs->hw.mic.cfg_reg,
- cs->hw.mic.cfg_reg + bytecnt);
- return (0);
- } else {
- request_region(cs->hw.mic.cfg_reg, bytecnt, "mic isdn");
- }
- printk(KERN_INFO
- "mic: defined at 0x%x IRQ %dn",
- cs->hw.mic.cfg_reg,
- cs->irq);
- 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 addressn");
- release_io_mic(cs);
- return (0);
- }
- return (1);
- }