/* $Id: bkm_a8.c,v 1.22.2.4 2004/01/15 14:02:34 keil Exp $ * * low level stuff for Scitel Quadro (4*S0, passive) * * Author Roland Klabunde * Copyright by Roland Klabunde <R.Klabunde@Berkom.de> * * 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 "ipac.h" #include "hscx.h" #include "isdnl1.h" #include <linux/pci.h> #include "bkm_ax.h" #define ATTEMPT_PCI_REMAPPING /* Required for PLX rev 1 */ static const char sct_quadro_revision[] = "$Revision: 1.22.2.4 $"; static const char *sct_quadro_subtypes[] = { "", "#1", "#2", "#3", "#4" }; #define wordout(addr,val) outw(val,addr) #define wordin(addr) inw(addr) static inline u_char readreg(unsigned int ale, unsigned int adr, u_char off) { register u_char ret; wordout(ale, off); ret = wordin(adr) & 0xFF; return (ret); } static inline void readfifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size) { int i; wordout(ale, off); for (i = 0; i < size; i++) data[i] = wordin(adr) & 0xFF; } static inline void writereg(unsigned int ale, unsigned int adr, u_char off, u_char data) { wordout(ale, off); wordout(adr, data); } static inline void writefifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size) { int i; wordout(ale, off); for (i = 0; i < size; i++) wordout(adr, data[i]); } /* Interface functions */ static u_char ReadISAC(struct IsdnCardState *cs, u_char offset) { return (readreg(cs->hw.ax.base, cs->hw.ax.data_adr, offset | 0x80)); } static void WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value) { writereg(cs->hw.ax.base, cs->hw.ax.data_adr, offset | 0x80, value); } static void ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size) { readfifo(cs->hw.ax.base, cs->hw.ax.data_adr, 0x80, data, size); } static void WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size) { writefifo(cs->hw.ax.base, cs->hw.ax.data_adr, 0x80, data, size); } static u_char ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset) { return (readreg(cs->hw.ax.base, cs->hw.ax.data_adr, offset + (hscx ? 0x40 : 0))); } static void WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value) { writereg(cs->hw.ax.base, cs->hw.ax.data_adr, offset + (hscx ? 0x40 : 0), value); } /* Set the specific ipac to active */ static void set_ipac_active(struct IsdnCardState *cs, u_int active) { /* set irq mask */ writereg(cs->hw.ax.base, cs->hw.ax.data_adr, IPAC_MASK, active ? 0xc0 : 0xff); } /* * fast interrupt HSCX stuff goes here */ #define READHSCX(cs, nr, reg) readreg(cs->hw.ax.base, \ cs->hw.ax.data_adr, reg + (nr ? 0x40 : 0)) #define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.ax.base, \ cs->hw.ax.data_adr, reg + (nr ? 0x40 : 0), data) #define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.ax.base, \ cs->hw.ax.data_adr, (nr ? 0x40 : 0), ptr, cnt) #define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.ax.base, \ cs->hw.ax.data_adr, (nr ? 0x40 : 0), ptr, cnt) #include "hscx_irq.c" static irqreturn_t bkm_interrupt_ipac(int intno, void *dev_id) { struct IsdnCardState *cs = dev_id; u_char ista, val, icnt = 5; u_long flags; spin_lock_irqsave(&cs->lock, flags); ista = readreg(cs->hw.ax.base, cs->hw.ax.data_adr, IPAC_ISTA); if (!(ista & 0x3f)) { /* not this IPAC */ spin_unlock_irqrestore(&cs->lock, flags); return IRQ_NONE; } Start_IPAC: if (cs->debug & L1_DEB_IPAC) debugl1(cs, "IPAC ISTA %02X", ista); if (ista & 0x0f) { val = readreg(cs->hw.ax.base, cs->hw.ax.data_adr, HSCX_ISTA + 0x40); 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 & readreg(cs->hw.ax.base, cs->hw.ax.data_adr, ISAC_ISTA | 0x80); if (val) { isac_interrupt(cs, val); } } if (ista & 0x10) { val = 0x01; isac_interrupt(cs, val); } ista = readreg(cs->hw.ax.base, cs->hw.ax.data_adr, IPAC_ISTA); if ((ista & 0x3f) && icnt) { icnt--; goto Start_IPAC; } if (!icnt) printk(KERN_WARNING "HiSax: Scitel Quadro (%s) IRQ LOOP\n", sct_quadro_subtypes[cs->subtyp]); writereg(cs->hw.ax.base, cs->hw.ax.data_adr, IPAC_MASK, 0xFF); writereg(cs->hw.ax.base, cs->hw.ax.data_adr, IPAC_MASK, 0xC0); spin_unlock_irqrestore(&cs->lock, flags); return IRQ_HANDLED; } static void release_io_sct_quadro(struct IsdnCardState *cs) { release_region(cs->hw.ax.base & 0xffffffc0, 128); if (cs->subtyp == SCT_1) release_region(cs->hw.ax.plx_adr, 64); } static void enable_bkm_int(struct IsdnCardState *cs, unsigned bEnable) { if (cs->typ == ISDN_CTYPE_SCT_QUADRO) { if (bEnable) wordout(cs->hw.ax.plx_adr + 0x4C, (wordin(cs->hw.ax.plx_adr + 0x4C) | 0x41)); else wordout(cs->hw.ax.plx_adr + 0x4C, (wordin(cs->hw.ax.plx_adr + 0x4C) & ~0x41)); } } static void reset_bkm(struct IsdnCardState *cs) { if (cs->subtyp == SCT_1) { wordout(cs->hw.ax.plx_adr + 0x50, (wordin(cs->hw.ax.plx_adr + 0x50) & ~4)); mdelay(10); /* Remove the soft reset */ wordout(cs->hw.ax.plx_adr + 0x50, (wordin(cs->hw.ax.plx_adr + 0x50) | 4)); mdelay(10); } } static int BKM_card_msg(struct IsdnCardState *cs, int mt, void *arg) { u_long flags; switch (mt) { case CARD_RESET: spin_lock_irqsave(&cs->lock, flags); /* Disable ints */ set_ipac_active(cs, 0); enable_bkm_int(cs, 0); reset_bkm(cs); spin_unlock_irqrestore(&cs->lock, flags); return (0); case CARD_RELEASE: /* Sanity */ spin_lock_irqsave(&cs->lock, flags); set_ipac_active(cs, 0); enable_bkm_int(cs, 0); spin_unlock_irqrestore(&cs->lock, flags); release_io_sct_quadro(cs); return (0); case CARD_INIT: spin_lock_irqsave(&cs->lock, flags); cs->debug |= L1_DEB_IPAC; set_ipac_active(cs, 1); inithscxisac(cs, 3); /* Enable ints */ enable_bkm_int(cs, 1); spin_unlock_irqrestore(&cs->lock, flags); return (0); case CARD_TEST: return (0); } return (0); } static int __devinit sct_alloc_io(u_int adr, u_int len) { if (!request_region(adr, len, "scitel")) { printk(KERN_WARNING "HiSax: Scitel port %#x-%#x already in use\n", adr, adr + len); return (1); } return(0); } static struct pci_dev *dev_a8 __devinitdata = NULL; static u16 sub_vendor_id __devinitdata = 0; static u16 sub_sys_id __devinitdata = 0; static u_char pci_bus __devinitdata = 0; static u_char pci_device_fn __devinitdata = 0; static u_char pci_irq __devinitdata = 0; int __devinit setup_sct_quadro(struct IsdnCard *card) { struct IsdnCardState *cs = card->cs; char tmp[64]; u_int found = 0; u_int pci_ioaddr1, pci_ioaddr2, pci_ioaddr3, pci_ioaddr4, pci_ioaddr5; strcpy(tmp, sct_quadro_revision); printk(KERN_INFO "HiSax: T-Berkom driver Rev. %s\n", HiSax_getrev(tmp)); if (cs->typ == ISDN_CTYPE_SCT_QUADRO) { cs->subtyp = SCT_1; /* Preset */ } else return (0); /* Identify subtype by para[0] */ if (card->para[0] >= SCT_1 && card->para[0] <= SCT_4) cs->subtyp = card->para[0]; else { printk(KERN_WARNING "HiSax: Scitel Quadro: Invalid " "subcontroller in configuration, default to 1\n"); return (0); } if ((cs->subtyp != SCT_1) && ((sub_sys_id != PCI_DEVICE_ID_BERKOM_SCITEL_QUADRO) || (sub_vendor_id != PCI_VENDOR_ID_BERKOM))) return (0); if (cs->subtyp == SCT_1) { while ((dev_a8 = hisax_find_pci_device(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050, dev_a8))) { sub_vendor_id = dev_a8->subsystem_vendor; sub_sys_id = dev_a8->subsystem_device; if ((sub_sys_id == PCI_DEVICE_ID_BERKOM_SCITEL_QUADRO) && (sub_vendor_id == PCI_VENDOR_ID_BERKOM)) { if (pci_enable_device(dev_a8)) return(0); pci_ioaddr1 = pci_resource_start(dev_a8, 1); pci_irq = dev_a8->irq; pci_bus = dev_a8->bus->number; pci_device_fn = dev_a8->devfn; found = 1; break; } } if (!found) { printk(KERN_WARNING "HiSax: Scitel Quadro (%s): " "Card not found\n", sct_quadro_subtypes[cs->subtyp]); return (0); } #ifdef ATTEMPT_PCI_REMAPPING /* HACK: PLX revision 1 bug: PLX address bit 7 must not be set */ if ((pci_ioaddr1 & 0x80) && (dev_a8->revision == 1)) { printk(KERN_WARNING "HiSax: Scitel Quadro (%s): " "PLX rev 1, remapping required!\n", sct_quadro_subtypes[cs->subtyp]); /* Restart PCI negotiation */ pci_write_config_dword(dev_a8, PCI_BASE_ADDRESS_1, (u_int) - 1); /* Move up by 0x80 byte */ pci_ioaddr1 += 0x80; pci_ioaddr1 &= PCI_BASE_ADDRESS_IO_MASK; pci_write_config_dword(dev_a8, PCI_BASE_ADDRESS_1, pci_ioaddr1); dev_a8->resource[ 1].start = pci_ioaddr1; } #endif /* End HACK */ } if (!pci_irq) { /* IRQ range check ?? */ printk(KERN_WARNING "HiSax: Scitel Quadro (%s): No IRQ\n", sct_quadro_subtypes[cs->subtyp]); return (0); } pci_read_config_dword(dev_a8, PCI_BASE_ADDRESS_1, &pci_ioaddr1); pci_read_config_dword(dev_a8, PCI_BASE_ADDRESS_2, &pci_ioaddr2); pci_read_config_dword(dev_a8, PCI_BASE_ADDRESS_3, &pci_ioaddr3); pci_read_config_dword(dev_a8, PCI_BASE_ADDRESS_4, &pci_ioaddr4); pci_read_config_dword(dev_a8, PCI_BASE_ADDRESS_5, &pci_ioaddr5); if (!pci_ioaddr1 || !pci_ioaddr2 || !pci_ioaddr3 || !pci_ioaddr4 || !pci_ioaddr5) { printk(KERN_WARNING "HiSax: Scitel Quadro (%s): " "No IO base address(es)\n", sct_quadro_subtypes[cs->subtyp]); return (0); } pci_ioaddr1 &= PCI_BASE_ADDRESS_IO_MASK; pci_ioaddr2 &= PCI_BASE_ADDRESS_IO_MASK; pci_ioaddr3 &= PCI_BASE_ADDRESS_IO_MASK; pci_ioaddr4 &= PCI_BASE_ADDRESS_IO_MASK; pci_ioaddr5 &= PCI_BASE_ADDRESS_IO_MASK; /* Take over */ cs->irq = pci_irq; cs->irq_flags |= IRQF_SHARED; /* pci_ioaddr1 is unique to all subdevices */ /* pci_ioaddr2 is for the fourth subdevice only */ /* pci_ioaddr3 is for the third subdevice only */ /* pci_ioaddr4 is for the second subdevice only */ /* pci_ioaddr5 is for the first subdevice only */ cs->hw.ax.plx_adr = pci_ioaddr1; /* Enter all ipac_base addresses */ switch(cs->subtyp) { case 1: cs->hw.ax.base = pci_ioaddr5 + 0x00; if (sct_alloc_io(pci_ioaddr1, 128)) return(0); if (sct_alloc_io(pci_ioaddr5, 64)) return(0); /* disable all IPAC */ writereg(pci_ioaddr5, pci_ioaddr5 + 4, IPAC_MASK, 0xFF); writereg(pci_ioaddr4 + 0x08, pci_ioaddr4 + 0x0c, IPAC_MASK, 0xFF); writereg(pci_ioaddr3 + 0x10, pci_ioaddr3 + 0x14, IPAC_MASK, 0xFF); writereg(pci_ioaddr2 + 0x20, pci_ioaddr2 + 0x24, IPAC_MASK, 0xFF); break; case 2: cs->hw.ax.base = pci_ioaddr4 + 0x08; if (sct_alloc_io(pci_ioaddr4, 64)) return(0); break; case 3: cs->hw.ax.base = pci_ioaddr3 + 0x10; if (sct_alloc_io(pci_ioaddr3, 64)) return(0); break; case 4: cs->hw.ax.base = pci_ioaddr2 + 0x20; if (sct_alloc_io(pci_ioaddr2, 64)) return(0); break; } /* For isac and hscx data path */ cs->hw.ax.data_adr = cs->hw.ax.base + 4; printk(KERN_INFO "HiSax: Scitel Quadro (%s) configured at " "0x%.4lX, 0x%.4lX, 0x%.4lX and IRQ %d\n", sct_quadro_subtypes[cs->subtyp], cs->hw.ax.plx_adr, cs->hw.ax.base, cs->hw.ax.data_adr, cs->irq); test_and_set_bit(HW_IPAC, &cs->HW_Flags); 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 = &BKM_card_msg; cs->irq_func = &bkm_interrupt_ipac; printk(KERN_INFO "HiSax: Scitel Quadro (%s): IPAC Version %d\n", sct_quadro_subtypes[cs->subtyp], readreg(cs->hw.ax.base, cs->hw.ax.data_adr, IPAC_ID)); return (1); }