/* $Id: sportster.c,v 1.16.2.4 2004/01/13 23:48:39 keil Exp $ * * low level stuff for USR Sportster internal TA * * Author Karsten Keil * Copyright by Karsten Keil * * This software may be used and distributed according to the terms * of the GNU General Public License, incorporated herein by reference. * * Thanks to Christian "naddy" Weisgerber (3Com, US Robotics) for documentation * * */ #include #include "hisax.h" #include "isac.h" #include "hscx.h" #include "isdnl1.h" static const char *sportster_revision = "$Revision: 1.16.2.4 $"; #define byteout(addr, val) outb(val, addr) #define bytein(addr) inb(addr) #define SPORTSTER_ISAC 0xC000 #define SPORTSTER_HSCXA 0x0000 #define SPORTSTER_HSCXB 0x4000 #define SPORTSTER_RES_IRQ 0x8000 #define SPORTSTER_RESET 0x80 #define SPORTSTER_INTE 0x40 static inline int calc_off(unsigned int base, unsigned int off) { return (base + ((off & 0xfc) << 8) + ((off & 3) << 1)); } static inline void read_fifo(unsigned int adr, u_char *data, int size) { insb(adr, data, size); } static void write_fifo(unsigned int adr, u_char *data, int size) { outsb(adr, data, size); } /* Interface functions */ static u_char ReadISAC(struct IsdnCardState *cs, u_char offset) { return (bytein(calc_off(cs->hw.spt.isac, offset))); } static void WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value) { byteout(calc_off(cs->hw.spt.isac, offset), value); } static void ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size) { read_fifo(cs->hw.spt.isac, data, size); } static void WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size) { write_fifo(cs->hw.spt.isac, data, size); } static u_char ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset) { return (bytein(calc_off(cs->hw.spt.hscx[hscx], offset))); } static void WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value) { byteout(calc_off(cs->hw.spt.hscx[hscx], offset), value); } /* * fast interrupt HSCX stuff goes here */ #define READHSCX(cs, nr, reg) bytein(calc_off(cs->hw.spt.hscx[nr], reg)) #define WRITEHSCX(cs, nr, reg, data) byteout(calc_off(cs->hw.spt.hscx[nr], reg), data) #define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo(cs->hw.spt.hscx[nr], ptr, cnt) #define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo(cs->hw.spt.hscx[nr], ptr, cnt) #include "hscx_irq.c" static irqreturn_t sportster_interrupt(int intno, void *dev_id) { struct IsdnCardState *cs = dev_id; u_char val; u_long flags; spin_lock_irqsave(&cs->lock, flags); val = READHSCX(cs, 1, HSCX_ISTA); Start_HSCX: if (val) hscx_int_main(cs, val); val = ReadISAC(cs, ISAC_ISTA); Start_ISAC: if (val) isac_interrupt(cs, val); val = READHSCX(cs, 1, HSCX_ISTA); if (val) { if (cs->debug & L1_DEB_HSCX) debugl1(cs, "HSCX IntStat after IntRoutine"); goto Start_HSCX; } val = ReadISAC(cs, ISAC_ISTA); if (val) { if (cs->debug & L1_DEB_ISAC) debugl1(cs, "ISAC IntStat after IntRoutine"); goto Start_ISAC; } /* get a new irq impulse if there any pending */ bytein(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ + 1); spin_unlock_irqrestore(&cs->lock, flags); return IRQ_HANDLED; } static void release_io_sportster(struct IsdnCardState *cs) { int i, adr; byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, 0); for (i = 0; i < 64; i++) { adr = cs->hw.spt.cfg_reg + i * 1024; release_region(adr, 8); } } static void reset_sportster(struct IsdnCardState *cs) { cs->hw.spt.res_irq |= SPORTSTER_RESET; /* Reset On */ byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq); mdelay(10); cs->hw.spt.res_irq &= ~SPORTSTER_RESET; /* Reset Off */ byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq); mdelay(10); } static int Sportster_card_msg(struct IsdnCardState *cs, int mt, void *arg) { u_long flags; switch (mt) { case CARD_RESET: spin_lock_irqsave(&cs->lock, flags); reset_sportster(cs); spin_unlock_irqrestore(&cs->lock, flags); return (0); case CARD_RELEASE: release_io_sportster(cs); return (0); case CARD_INIT: spin_lock_irqsave(&cs->lock, flags); reset_sportster(cs); inithscxisac(cs, 1); cs->hw.spt.res_irq |= SPORTSTER_INTE; /* IRQ On */ byteout(cs->hw.spt.cfg_reg + SPORTSTER_RES_IRQ, cs->hw.spt.res_irq); inithscxisac(cs, 2); spin_unlock_irqrestore(&cs->lock, flags); return (0); case CARD_TEST: return (0); } return (0); } static int get_io_range(struct IsdnCardState *cs) { int i, j, adr; for (i = 0; i < 64; i++) { adr = cs->hw.spt.cfg_reg + i * 1024; if (!request_region(adr, 8, "sportster")) { printk(KERN_WARNING "HiSax: USR Sportster config port " "%x-%x already in use\n", adr, adr + 8); break; } } if (i == 64) return (1); else { for (j = 0; j < i; j++) { adr = cs->hw.spt.cfg_reg + j * 1024; release_region(adr, 8); } return (0); } } int setup_sportster(struct IsdnCard *card) { struct IsdnCardState *cs = card->cs; char tmp[64]; strcpy(tmp, sportster_revision); printk(KERN_INFO "HiSax: USR Sportster driver Rev. %s\n", HiSax_getrev(tmp)); if (cs->typ != ISDN_CTYPE_SPORTSTER) return (0); cs->hw.spt.cfg_reg = card->para[1]; cs->irq = card->para[0]; if (!get_io_range(cs)) return (0); cs->hw.spt.isac = cs->hw.spt.cfg_reg + SPORTSTER_ISAC; cs->hw.spt.hscx[0] = cs->hw.spt.cfg_reg + SPORTSTER_HSCXA; cs->hw.spt.hscx[1] = cs->hw.spt.cfg_reg + SPORTSTER_HSCXB; switch (cs->irq) { case 5: cs->hw.spt.res_irq = 1; break; case 7: cs->hw.spt.res_irq = 2; break; case 10:cs->hw.spt.res_irq = 3; break; case 11:cs->hw.spt.res_irq = 4; break; case 12:cs->hw.spt.res_irq = 5; break; case 14:cs->hw.spt.res_irq = 6; break; case 15:cs->hw.spt.res_irq = 7; break; default:release_io_sportster(cs); printk(KERN_WARNING "Sportster: wrong IRQ\n"); return (0); } printk(KERN_INFO "HiSax: USR Sportster config irq:%d cfg:0x%X\n", cs->irq, cs->hw.spt.cfg_reg); 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 = &Sportster_card_msg; cs->irq_func = &sportster_interrupt; ISACVersion(cs, "Sportster:"); if (HscxVersion(cs, "Sportster:")) { printk(KERN_WARNING "Sportster: wrong HSCX versions check IO address\n"); release_io_sportster(cs); return (0); } return (1); }