/* $Id: s0box.c,v 2.6.2.4 2004/01/13 23:48:39 keil Exp $ * * low level stuff for Creatix S0BOX * * Author Enrik Berkhan * Copyright by Enrik Berkhan * * This software may be used and distributed according to the terms * of the GNU General Public License, incorporated herein by reference. * */ #include #include "hisax.h" #include "isac.h" #include "hscx.h" #include "isdnl1.h" static const char *s0box_revision = "$Revision: 2.6.2.4 $"; static inline void writereg(unsigned int padr, signed int addr, u_char off, u_char val) { outb_p(0x1c, padr + 2); outb_p(0x14, padr + 2); outb_p((addr + off) & 0x7f, padr); outb_p(0x16, padr + 2); outb_p(val, padr); outb_p(0x17, padr + 2); outb_p(0x14, padr + 2); outb_p(0x1c, padr + 2); } static u_char nibtab[] = { 1, 9, 5, 0xd, 3, 0xb, 7, 0xf, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 4, 0xc, 2, 0xa, 6, 0xe }; static inline u_char readreg(unsigned int padr, signed int addr, u_char off) { register u_char n1, n2; outb_p(0x1c, padr + 2); outb_p(0x14, padr + 2); outb_p((addr + off) | 0x80, padr); outb_p(0x16, padr + 2); outb_p(0x17, padr + 2); n1 = (inb_p(padr + 1) >> 3) & 0x17; outb_p(0x16, padr + 2); n2 = (inb_p(padr + 1) >> 3) & 0x17; outb_p(0x14, padr + 2); outb_p(0x1c, padr + 2); return nibtab[n1] | (nibtab[n2] << 4); } static inline void read_fifo(unsigned int padr, signed int adr, u_char *data, int size) { int i; register u_char n1, n2; outb_p(0x1c, padr + 2); outb_p(0x14, padr + 2); outb_p(adr | 0x80, padr); outb_p(0x16, padr + 2); for (i = 0; i < size; i++) { outb_p(0x17, padr + 2); n1 = (inb_p(padr + 1) >> 3) & 0x17; outb_p(0x16, padr + 2); n2 = (inb_p(padr + 1) >> 3) & 0x17; *(data++) = nibtab[n1] | (nibtab[n2] << 4); } outb_p(0x14, padr + 2); outb_p(0x1c, padr + 2); return; } static inline void write_fifo(unsigned int padr, signed int adr, u_char *data, int size) { int i; outb_p(0x1c, padr + 2); outb_p(0x14, padr + 2); outb_p(adr & 0x7f, padr); for (i = 0; i < size; i++) { outb_p(0x16, padr + 2); outb_p(*(data++), padr); outb_p(0x17, padr + 2); } outb_p(0x14, padr + 2); outb_p(0x1c, padr + 2); return; } /* Interface functions */ static u_char ReadISAC(struct IsdnCardState *cs, u_char offset) { return (readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, offset)); } static void WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value) { writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, offset, value); } static void ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size) { read_fifo(cs->hw.teles3.cfg_reg, cs->hw.teles3.isacfifo, data, size); } static void WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size) { write_fifo(cs->hw.teles3.cfg_reg, cs->hw.teles3.isacfifo, data, size); } static u_char ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset) { return (readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[hscx], offset)); } static void WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value) { writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[hscx], offset, value); } /* * fast interrupt HSCX stuff goes here */ #define READHSCX(cs, nr, reg) readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[nr], reg) #define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[nr], reg, data) #define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscxfifo[nr], ptr, cnt) #define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscxfifo[nr], ptr, cnt) #include "hscx_irq.c" static irqreturn_t s0box_interrupt(int intno, void *dev_id) { #define MAXCOUNT 5 struct IsdnCardState *cs = dev_id; u_char val; u_long flags; int count = 0; spin_lock_irqsave(&cs->lock, flags); val = readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[1], HSCX_ISTA); Start_HSCX: if (val) hscx_int_main(cs, val); val = readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, ISAC_ISTA); Start_ISAC: if (val) isac_interrupt(cs, val); count++; val = readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[1], HSCX_ISTA); if (val && count < MAXCOUNT) { if (cs->debug & L1_DEB_HSCX) debugl1(cs, "HSCX IntStat after IntRoutine"); goto Start_HSCX; } val = readreg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, ISAC_ISTA); if (val && count < MAXCOUNT) { if (cs->debug & L1_DEB_ISAC) debugl1(cs, "ISAC IntStat after IntRoutine"); goto Start_ISAC; } if (count >= MAXCOUNT) printk(KERN_WARNING "S0Box: more than %d loops in s0box_interrupt\n", count); writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[0], HSCX_MASK, 0xFF); writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[1], HSCX_MASK, 0xFF); writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, ISAC_MASK, 0xFF); writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.isac, ISAC_MASK, 0x0); writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[0], HSCX_MASK, 0x0); writereg(cs->hw.teles3.cfg_reg, cs->hw.teles3.hscx[1], HSCX_MASK, 0x0); spin_unlock_irqrestore(&cs->lock, flags); return IRQ_HANDLED; } static void release_io_s0box(struct IsdnCardState *cs) { release_region(cs->hw.teles3.cfg_reg, 8); } static int S0Box_card_msg(struct IsdnCardState *cs, int mt, void *arg) { u_long flags; switch (mt) { case CARD_RESET: break; case CARD_RELEASE: release_io_s0box(cs); break; case CARD_INIT: spin_lock_irqsave(&cs->lock, flags); inithscxisac(cs, 3); spin_unlock_irqrestore(&cs->lock, flags); break; case CARD_TEST: break; } return (0); } int setup_s0box(struct IsdnCard *card) { struct IsdnCardState *cs = card->cs; char tmp[64]; strcpy(tmp, s0box_revision); printk(KERN_INFO "HiSax: S0Box IO driver Rev. %s\n", HiSax_getrev(tmp)); if (cs->typ != ISDN_CTYPE_S0BOX) return (0); cs->hw.teles3.cfg_reg = card->para[1]; cs->hw.teles3.hscx[0] = -0x20; cs->hw.teles3.hscx[1] = 0x0; cs->hw.teles3.isac = 0x20; cs->hw.teles3.isacfifo = cs->hw.teles3.isac + 0x3e; cs->hw.teles3.hscxfifo[0] = cs->hw.teles3.hscx[0] + 0x3e; cs->hw.teles3.hscxfifo[1] = cs->hw.teles3.hscx[1] + 0x3e; cs->irq = card->para[0]; if (!request_region(cs->hw.teles3.cfg_reg, 8, "S0Box parallel I/O")) { printk(KERN_WARNING "HiSax: S0Box ports %x-%x already in use\n", cs->hw.teles3.cfg_reg, cs->hw.teles3.cfg_reg + 7); return 0; } printk(KERN_INFO "HiSax: S0Box config irq:%d isac:0x%x cfg:0x%x\n", cs->irq, cs->hw.teles3.isac, cs->hw.teles3.cfg_reg); printk(KERN_INFO "HiSax: hscx A:0x%x hscx B:0x%x\n", cs->hw.teles3.hscx[0], cs->hw.teles3.hscx[1]); 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 = &S0Box_card_msg; cs->irq_func = &s0box_interrupt; ISACVersion(cs, "S0Box:"); if (HscxVersion(cs, "S0Box:")) { printk(KERN_WARNING "S0Box: wrong HSCX versions check IO address\n"); release_io_s0box(cs); return (0); } return (1); }