/* $Id: gazel.c,v 2.19.2.4 2004/01/14 16:04:48 keil Exp $ * * low level stuff for Gazel isdn cards * * Author BeWan Systems * based on source code from Karsten Keil * Copyright by BeWan Systems * * 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" #include "ipac.h" #include <linux/pci.h> static const char *gazel_revision = "$Revision: 2.19.2.4 $"; #define R647 1 #define R685 2 #define R753 3 #define R742 4 #define PLX_CNTRL 0x50 /* registre de controle PLX */ #define RESET_GAZEL 0x4 #define RESET_9050 0x40000000 #define PLX_INCSR 0x4C /* registre d'IT du 9050 */ #define INT_ISAC_EN 0x8 /* 1 = enable IT isac */ #define INT_ISAC 0x20 /* 1 = IT isac en cours */ #define INT_HSCX_EN 0x1 /* 1 = enable IT hscx */ #define INT_HSCX 0x4 /* 1 = IT hscx en cours */ #define INT_PCI_EN 0x40 /* 1 = enable IT PCI */ #define INT_IPAC_EN 0x3 /* enable IT ipac */ #define byteout(addr, val) outb(val, addr) #define bytein(addr) inb(addr) static inline u_char readreg(unsigned int adr, u_short off) { return bytein(adr + off); } static inline void writereg(unsigned int adr, u_short off, u_char data) { byteout(adr + off, data); } 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); } static inline u_char readreg_ipac(unsigned int adr, u_short off) { register u_char ret; byteout(adr, off); ret = bytein(adr + 4); return ret; } static inline void writereg_ipac(unsigned int adr, u_short off, u_char data) { byteout(adr, off); byteout(adr + 4, data); } static inline void read_fifo_ipac(unsigned int adr, u_short off, u_char *data, int size) { byteout(adr, off); insb(adr + 4, data, size); } static void write_fifo_ipac(unsigned int adr, u_short off, u_char *data, int size) { byteout(adr, off); outsb(adr + 4, data, size); } /* Interface functions */ static u_char ReadISAC(struct IsdnCardState *cs, u_char offset) { u_short off2 = offset; switch (cs->subtyp) { case R647: off2 = ((off2 << 8 & 0xf000) | (off2 & 0xf)); case R685: return (readreg(cs->hw.gazel.isac, off2)); case R753: case R742: return (readreg_ipac(cs->hw.gazel.ipac, 0x80 + off2)); } return 0; } static void WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value) { u_short off2 = offset; switch (cs->subtyp) { case R647: off2 = ((off2 << 8 & 0xf000) | (off2 & 0xf)); case R685: writereg(cs->hw.gazel.isac, off2, value); break; case R753: case R742: writereg_ipac(cs->hw.gazel.ipac, 0x80 + off2, value); break; } } static void ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size) { switch (cs->subtyp) { case R647: case R685: read_fifo(cs->hw.gazel.isacfifo, data, size); break; case R753: case R742: read_fifo_ipac(cs->hw.gazel.ipac, 0x80, data, size); break; } } static void WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size) { switch (cs->subtyp) { case R647: case R685: write_fifo(cs->hw.gazel.isacfifo, data, size); break; case R753: case R742: write_fifo_ipac(cs->hw.gazel.ipac, 0x80, data, size); break; } } static void ReadHSCXfifo(struct IsdnCardState *cs, int hscx, u_char *data, int size) { switch (cs->subtyp) { case R647: case R685: read_fifo(cs->hw.gazel.hscxfifo[hscx], data, size); break; case R753: case R742: read_fifo_ipac(cs->hw.gazel.ipac, hscx * 0x40, data, size); break; } } static void WriteHSCXfifo(struct IsdnCardState *cs, int hscx, u_char *data, int size) { switch (cs->subtyp) { case R647: case R685: write_fifo(cs->hw.gazel.hscxfifo[hscx], data, size); break; case R753: case R742: write_fifo_ipac(cs->hw.gazel.ipac, hscx * 0x40, data, size); break; } } static u_char ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset) { u_short off2 = offset; switch (cs->subtyp) { case R647: off2 = ((off2 << 8 & 0xf000) | (off2 & 0xf)); case R685: return (readreg(cs->hw.gazel.hscx[hscx], off2)); case R753: case R742: return (readreg_ipac(cs->hw.gazel.ipac, hscx * 0x40 + off2)); } return 0; } static void WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value) { u_short off2 = offset; switch (cs->subtyp) { case R647: off2 = ((off2 << 8 & 0xf000) | (off2 & 0xf)); case R685: writereg(cs->hw.gazel.hscx[hscx], off2, value); break; case R753: case R742: writereg_ipac(cs->hw.gazel.ipac, hscx * 0x40 + off2, value); break; } } /* * fast interrupt HSCX stuff goes here */ #define READHSCX(cs, nr, reg) ReadHSCX(cs, nr, reg) #define WRITEHSCX(cs, nr, reg, data) WriteHSCX(cs, nr, reg, data) #define READHSCXFIFO(cs, nr, ptr, cnt) ReadHSCXfifo(cs, nr, ptr, cnt) #define WRITEHSCXFIFO(cs, nr, ptr, cnt) WriteHSCXfifo(cs, nr, ptr, cnt) #include "hscx_irq.c" static irqreturn_t gazel_interrupt(int intno, void *dev_id) { #define MAXCOUNT 5 struct IsdnCardState *cs = dev_id; u_char valisac, valhscx; int count = 0; u_long flags; spin_lock_irqsave(&cs->lock, flags); do { valhscx = ReadHSCX(cs, 1, HSCX_ISTA); if (valhscx) hscx_int_main(cs, valhscx); valisac = ReadISAC(cs, ISAC_ISTA); if (valisac) isac_interrupt(cs, valisac); count++; } while ((valhscx || valisac) && (count < MAXCOUNT)); WriteHSCX(cs, 0, HSCX_MASK, 0xFF); WriteHSCX(cs, 1, HSCX_MASK, 0xFF); WriteISAC(cs, ISAC_MASK, 0xFF); WriteISAC(cs, ISAC_MASK, 0x0); WriteHSCX(cs, 0, HSCX_MASK, 0x0); WriteHSCX(cs, 1, HSCX_MASK, 0x0); spin_unlock_irqrestore(&cs->lock, flags); return IRQ_HANDLED; } static irqreturn_t gazel_interrupt_ipac(int intno, void *dev_id) { struct IsdnCardState *cs = dev_id; u_char ista, val; int count = 0; u_long flags; spin_lock_irqsave(&cs->lock, flags); ista = ReadISAC(cs, IPAC_ISTA - 0x80); do { if (ista & 0x0f) { val = ReadHSCX(cs, 1, HSCX_ISTA); if (ista & 0x01) val |= 0x01; if (ista & 0x04) val |= 0x02; if (ista & 0x08) val |= 0x04; if (val) { hscx_int_main(cs, val); } } if (ista & 0x20) { val = 0xfe & ReadISAC(cs, ISAC_ISTA); if (val) { isac_interrupt(cs, val); } } if (ista & 0x10) { val = 0x01; isac_interrupt(cs, val); } ista = ReadISAC(cs, IPAC_ISTA - 0x80); count++; } while ((ista & 0x3f) && (count < MAXCOUNT)); WriteISAC(cs, IPAC_MASK - 0x80, 0xFF); WriteISAC(cs, IPAC_MASK - 0x80, 0xC0); spin_unlock_irqrestore(&cs->lock, flags); return IRQ_HANDLED; } static void release_io_gazel(struct IsdnCardState *cs) { unsigned int i; switch (cs->subtyp) { case R647: for (i = 0x0000; i < 0xC000; i += 0x1000) release_region(i + cs->hw.gazel.hscx[0], 16); release_region(0xC000 + cs->hw.gazel.hscx[0], 1); break; case R685: release_region(cs->hw.gazel.hscx[0], 0x100); release_region(cs->hw.gazel.cfg_reg, 0x80); break; case R753: release_region(cs->hw.gazel.ipac, 0x8); release_region(cs->hw.gazel.cfg_reg, 0x80); break; case R742: release_region(cs->hw.gazel.ipac, 8); break; } } static int reset_gazel(struct IsdnCardState *cs) { unsigned long plxcntrl, addr = cs->hw.gazel.cfg_reg; switch (cs->subtyp) { case R647: writereg(addr, 0, 0); HZDELAY(10); writereg(addr, 0, 1); HZDELAY(2); break; case R685: plxcntrl = inl(addr + PLX_CNTRL); plxcntrl |= (RESET_9050 + RESET_GAZEL); outl(plxcntrl, addr + PLX_CNTRL); plxcntrl &= ~(RESET_9050 + RESET_GAZEL); HZDELAY(4); outl(plxcntrl, addr + PLX_CNTRL); HZDELAY(10); outb(INT_ISAC_EN + INT_HSCX_EN + INT_PCI_EN, addr + PLX_INCSR); break; case R753: plxcntrl = inl(addr + PLX_CNTRL); plxcntrl |= (RESET_9050 + RESET_GAZEL); outl(plxcntrl, addr + PLX_CNTRL); plxcntrl &= ~(RESET_9050 + RESET_GAZEL); WriteISAC(cs, IPAC_POTA2 - 0x80, 0x20); HZDELAY(4); outl(plxcntrl, addr + PLX_CNTRL); HZDELAY(10); WriteISAC(cs, IPAC_POTA2 - 0x80, 0x00); WriteISAC(cs, IPAC_ACFG - 0x80, 0xff); WriteISAC(cs, IPAC_AOE - 0x80, 0x0); WriteISAC(cs, IPAC_MASK - 0x80, 0xff); WriteISAC(cs, IPAC_CONF - 0x80, 0x1); outb(INT_IPAC_EN + INT_PCI_EN, addr + PLX_INCSR); WriteISAC(cs, IPAC_MASK - 0x80, 0xc0); break; case R742: WriteISAC(cs, IPAC_POTA2 - 0x80, 0x20); HZDELAY(4); WriteISAC(cs, IPAC_POTA2 - 0x80, 0x00); WriteISAC(cs, IPAC_ACFG - 0x80, 0xff); WriteISAC(cs, IPAC_AOE - 0x80, 0x0); WriteISAC(cs, IPAC_MASK - 0x80, 0xff); WriteISAC(cs, IPAC_CONF - 0x80, 0x1); WriteISAC(cs, IPAC_MASK - 0x80, 0xc0); break; } return (0); } static int Gazel_card_msg(struct IsdnCardState *cs, int mt, void *arg) { u_long flags; switch (mt) { case CARD_RESET: spin_lock_irqsave(&cs->lock, flags); reset_gazel(cs); spin_unlock_irqrestore(&cs->lock, flags); return (0); case CARD_RELEASE: release_io_gazel(cs); return (0); case CARD_INIT: spin_lock_irqsave(&cs->lock, flags); inithscxisac(cs, 1); if ((cs->subtyp == R647) || (cs->subtyp == R685)) { int i; for (i = 0; i < (2 + MAX_WAITING_CALLS); i++) { cs->bcs[i].hw.hscx.tsaxr0 = 0x1f; cs->bcs[i].hw.hscx.tsaxr1 = 0x23; } } spin_unlock_irqrestore(&cs->lock, flags); return (0); case CARD_TEST: return (0); } return (0); } static int reserve_regions(struct IsdnCard *card, struct IsdnCardState *cs) { unsigned int i, j, base = 0, adr = 0, len = 0; switch (cs->subtyp) { case R647: base = cs->hw.gazel.hscx[0]; if (!request_region(adr = (0xC000 + base), len = 1, "gazel")) goto error; for (i = 0x0000; i < 0xC000; i += 0x1000) { if (!request_region(adr = (i + base), len = 16, "gazel")) goto error; } if (i != 0xC000) { for (j = 0; j < i; j += 0x1000) release_region(j + base, 16); release_region(0xC000 + base, 1); goto error; } break; case R685: if (!request_region(adr = cs->hw.gazel.hscx[0], len = 0x100, "gazel")) goto error; if (!request_region(adr = cs->hw.gazel.cfg_reg, len = 0x80, "gazel")) { release_region(cs->hw.gazel.hscx[0], 0x100); goto error; } break; case R753: if (!request_region(adr = cs->hw.gazel.ipac, len = 0x8, "gazel")) goto error; if (!request_region(adr = cs->hw.gazel.cfg_reg, len = 0x80, "gazel")) { release_region(cs->hw.gazel.ipac, 8); goto error; } break; case R742: if (!request_region(adr = cs->hw.gazel.ipac, len = 0x8, "gazel")) goto error; break; } return 0; error: printk(KERN_WARNING "Gazel: io ports 0x%x-0x%x already in use\n", adr, adr + len); return 1; } static int setup_gazelisa(struct IsdnCard *card, struct IsdnCardState *cs) { printk(KERN_INFO "Gazel: ISA PnP card automatic recognition\n"); // we got an irq parameter, assume it is an ISA card // R742 decodes address even in not started... // R647 returns FF if not present or not started // eventually needs improvment if (readreg_ipac(card->para[1], IPAC_ID) == 1) cs->subtyp = R742; else cs->subtyp = R647; setup_isac(cs); cs->hw.gazel.cfg_reg = card->para[1] + 0xC000; cs->hw.gazel.ipac = card->para[1]; cs->hw.gazel.isac = card->para[1] + 0x8000; cs->hw.gazel.hscx[0] = card->para[1]; cs->hw.gazel.hscx[1] = card->para[1] + 0x4000; cs->irq = card->para[0]; cs->hw.gazel.isacfifo = cs->hw.gazel.isac; cs->hw.gazel.hscxfifo[0] = cs->hw.gazel.hscx[0]; cs->hw.gazel.hscxfifo[1] = cs->hw.gazel.hscx[1]; switch (cs->subtyp) { case R647: printk(KERN_INFO "Gazel: Card ISA R647/R648 found\n"); cs->dc.isac.adf2 = 0x87; printk(KERN_INFO "Gazel: config irq:%d isac:0x%X cfg:0x%X\n", cs->irq, cs->hw.gazel.isac, cs->hw.gazel.cfg_reg); printk(KERN_INFO "Gazel: hscx A:0x%X hscx B:0x%X\n", cs->hw.gazel.hscx[0], cs->hw.gazel.hscx[1]); break; case R742: printk(KERN_INFO "Gazel: Card ISA R742 found\n"); test_and_set_bit(HW_IPAC, &cs->HW_Flags); printk(KERN_INFO "Gazel: config irq:%d ipac:0x%X\n", cs->irq, cs->hw.gazel.ipac); break; } return (0); } #ifdef CONFIG_PCI static struct pci_dev *dev_tel = NULL; static int setup_gazelpci(struct IsdnCardState *cs) { u_int pci_ioaddr0 = 0, pci_ioaddr1 = 0; u_char pci_irq = 0, found; u_int nbseek, seekcard; printk(KERN_WARNING "Gazel: PCI card automatic recognition\n"); found = 0; seekcard = PCI_DEVICE_ID_PLX_R685; for (nbseek = 0; nbseek < 4; nbseek++) { if ((dev_tel = hisax_find_pci_device(PCI_VENDOR_ID_PLX, seekcard, dev_tel))) { if (pci_enable_device(dev_tel)) return 1; pci_irq = dev_tel->irq; pci_ioaddr0 = pci_resource_start(dev_tel, 1); pci_ioaddr1 = pci_resource_start(dev_tel, 2); found = 1; } if (found) break; else { switch (seekcard) { case PCI_DEVICE_ID_PLX_R685: seekcard = PCI_DEVICE_ID_PLX_R753; break; case PCI_DEVICE_ID_PLX_R753: seekcard = PCI_DEVICE_ID_PLX_DJINN_ITOO; break; case PCI_DEVICE_ID_PLX_DJINN_ITOO: seekcard = PCI_DEVICE_ID_PLX_OLITEC; break; } } } if (!found) { printk(KERN_WARNING "Gazel: No PCI card found\n"); return (1); } if (!pci_irq) { printk(KERN_WARNING "Gazel: No IRQ for PCI card found\n"); return 1; } cs->hw.gazel.pciaddr[0] = pci_ioaddr0; cs->hw.gazel.pciaddr[1] = pci_ioaddr1; setup_isac(cs); pci_ioaddr1 &= 0xfffe; cs->hw.gazel.cfg_reg = pci_ioaddr0 & 0xfffe; cs->hw.gazel.ipac = pci_ioaddr1; cs->hw.gazel.isac = pci_ioaddr1 + 0x80; cs->hw.gazel.hscx[0] = pci_ioaddr1; cs->hw.gazel.hscx[1] = pci_ioaddr1 + 0x40; cs->hw.gazel.isacfifo = cs->hw.gazel.isac; cs->hw.gazel.hscxfifo[0] = cs->hw.gazel.hscx[0]; cs->hw.gazel.hscxfifo[1] = cs->hw.gazel.hscx[1]; cs->irq = pci_irq; cs->irq_flags |= IRQF_SHARED; switch (seekcard) { case PCI_DEVICE_ID_PLX_R685: printk(KERN_INFO "Gazel: Card PCI R685 found\n"); cs->subtyp = R685; cs->dc.isac.adf2 = 0x87; printk(KERN_INFO "Gazel: config irq:%d isac:0x%X cfg:0x%X\n", cs->irq, cs->hw.gazel.isac, cs->hw.gazel.cfg_reg); printk(KERN_INFO "Gazel: hscx A:0x%X hscx B:0x%X\n", cs->hw.gazel.hscx[0], cs->hw.gazel.hscx[1]); break; case PCI_DEVICE_ID_PLX_R753: case PCI_DEVICE_ID_PLX_DJINN_ITOO: case PCI_DEVICE_ID_PLX_OLITEC: printk(KERN_INFO "Gazel: Card PCI R753 found\n"); cs->subtyp = R753; test_and_set_bit(HW_IPAC, &cs->HW_Flags); printk(KERN_INFO "Gazel: config irq:%d ipac:0x%X cfg:0x%X\n", cs->irq, cs->hw.gazel.ipac, cs->hw.gazel.cfg_reg); break; } return (0); } #endif /* CONFIG_PCI */ int setup_gazel(struct IsdnCard *card) { struct IsdnCardState *cs = card->cs; char tmp[64]; u_char val; strcpy(tmp, gazel_revision); printk(KERN_INFO "Gazel: Driver Revision %s\n", HiSax_getrev(tmp)); if (cs->typ != ISDN_CTYPE_GAZEL) return (0); if (card->para[0]) { if (setup_gazelisa(card, cs)) return (0); } else { #ifdef CONFIG_PCI if (setup_gazelpci(cs)) return (0); #else printk(KERN_WARNING "Gazel: Card PCI requested and NO_PCI_BIOS, unable to config\n"); return (0); #endif /* CONFIG_PCI */ } if (reserve_regions(card, cs)) { return (0); } if (reset_gazel(cs)) { printk(KERN_WARNING "Gazel: wrong IRQ\n"); release_io_gazel(cs); return (0); } 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 = &Gazel_card_msg; switch (cs->subtyp) { case R647: case R685: cs->irq_func = &gazel_interrupt; ISACVersion(cs, "Gazel:"); if (HscxVersion(cs, "Gazel:")) { printk(KERN_WARNING "Gazel: wrong HSCX versions check IO address\n"); release_io_gazel(cs); return (0); } break; case R742: case R753: cs->irq_func = &gazel_interrupt_ipac; val = ReadISAC(cs, IPAC_ID - 0x80); printk(KERN_INFO "Gazel: IPAC version %x\n", val); break; } return (1); }