diff options
Diffstat (limited to 'drivers/isdn/hisax/mic.c')
| -rw-r--r-- | drivers/isdn/hisax/mic.c | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/drivers/isdn/hisax/mic.c b/drivers/isdn/hisax/mic.c new file mode 100644 index 00000000..08a6b7fb --- /dev/null +++ b/drivers/isdn/hisax/mic.c @@ -0,0 +1,236 @@ +/* $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 __devinit +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); +} |