/* $Id: isurf.c,v 1.12.2.4 2004/01/13 21:46:03 keil Exp $ * * low level stuff for Siemens I-Surf/I-Talk cards * * Author Karsten Keil * Copyright by Karsten Keil <keil@isdn4linux.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 "isar.h" #include "isdnl1.h" #include <linux/isapnp.h> static const char *ISurf_revision = "$Revision: 1.12.2.4 $"; #define byteout(addr, val) outb(val, addr) #define bytein(addr) inb(addr) #define ISURF_ISAR_RESET 1 #define ISURF_ISAC_RESET 2 #define ISURF_ISAR_EA 4 #define ISURF_ARCOFI_RESET 8 #define ISURF_RESET (ISURF_ISAR_RESET | ISURF_ISAC_RESET | ISURF_ARCOFI_RESET) #define ISURF_ISAR_OFFSET 0 #define ISURF_ISAC_OFFSET 0x100 #define ISURF_IOMEM_SIZE 0x400 /* Interface functions */ static u_char ReadISAC(struct IsdnCardState *cs, u_char offset) { return (readb(cs->hw.isurf.isac + offset)); } static void WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value) { writeb(value, cs->hw.isurf.isac + offset); mb(); } static void ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size) { register int i; for (i = 0; i < size; i++) data[i] = readb(cs->hw.isurf.isac); } static void WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size) { register int i; for (i = 0; i < size; i++) { writeb(data[i], cs->hw.isurf.isac); mb(); } } /* ISAR access routines * mode = 0 access with IRQ on * mode = 1 access with IRQ off * mode = 2 access with IRQ off and using last offset */ static u_char ReadISAR(struct IsdnCardState *cs, int mode, u_char offset) { return (readb(cs->hw.isurf.isar + offset)); } static void WriteISAR(struct IsdnCardState *cs, int mode, u_char offset, u_char value) { writeb(value, cs->hw.isurf.isar + offset); mb(); } static irqreturn_t isurf_interrupt(int intno, void *dev_id) { struct IsdnCardState *cs = dev_id; u_char val; int cnt = 5; u_long flags; spin_lock_irqsave(&cs->lock, flags); val = readb(cs->hw.isurf.isar + ISAR_IRQBIT); Start_ISAR: if (val & ISAR_IRQSTA) isar_int_main(cs); val = readb(cs->hw.isurf.isac + ISAC_ISTA); Start_ISAC: if (val) isac_interrupt(cs, val); val = readb(cs->hw.isurf.isar + ISAR_IRQBIT); if ((val & ISAR_IRQSTA) && --cnt) { if (cs->debug & L1_DEB_HSCX) debugl1(cs, "ISAR IntStat after IntRoutine"); goto Start_ISAR; } val = readb(cs->hw.isurf.isac + ISAC_ISTA); if (val && --cnt) { if (cs->debug & L1_DEB_ISAC) debugl1(cs, "ISAC IntStat after IntRoutine"); goto Start_ISAC; } if (!cnt) printk(KERN_WARNING "ISurf IRQ LOOP\n"); writeb(0, cs->hw.isurf.isar + ISAR_IRQBIT); mb(); writeb(0xFF, cs->hw.isurf.isac + ISAC_MASK); mb(); writeb(0, cs->hw.isurf.isac + ISAC_MASK); mb(); writeb(ISAR_IRQMSK, cs->hw.isurf.isar + ISAR_IRQBIT); mb(); spin_unlock_irqrestore(&cs->lock, flags); return IRQ_HANDLED; } static void release_io_isurf(struct IsdnCardState *cs) { release_region(cs->hw.isurf.reset, 1); iounmap(cs->hw.isurf.isar); release_mem_region(cs->hw.isurf.phymem, ISURF_IOMEM_SIZE); } static void reset_isurf(struct IsdnCardState *cs, u_char chips) { printk(KERN_INFO "ISurf: resetting card\n"); byteout(cs->hw.isurf.reset, chips); /* Reset On */ mdelay(10); byteout(cs->hw.isurf.reset, ISURF_ISAR_EA); /* Reset Off */ mdelay(10); } static int ISurf_card_msg(struct IsdnCardState *cs, int mt, void *arg) { u_long flags; switch (mt) { case CARD_RESET: spin_lock_irqsave(&cs->lock, flags); reset_isurf(cs, ISURF_RESET); spin_unlock_irqrestore(&cs->lock, flags); return (0); case CARD_RELEASE: release_io_isurf(cs); return (0); case CARD_INIT: spin_lock_irqsave(&cs->lock, flags); reset_isurf(cs, ISURF_RESET); clear_pending_isac_ints(cs); writeb(0, cs->hw.isurf.isar + ISAR_IRQBIT); mb(); initisac(cs); initisar(cs); /* Reenable ISAC IRQ */ cs->writeisac(cs, ISAC_MASK, 0); /* RESET Receiver and Transmitter */ cs->writeisac(cs, ISAC_CMDR, 0x41); spin_unlock_irqrestore(&cs->lock, flags); return (0); case CARD_TEST: return (0); } return (0); } static int isurf_auxcmd(struct IsdnCardState *cs, isdn_ctrl *ic) { int ret; u_long flags; if ((ic->command == ISDN_CMD_IOCTL) && (ic->arg == 9)) { ret = isar_auxcmd(cs, ic); spin_lock_irqsave(&cs->lock, flags); if (!ret) { reset_isurf(cs, ISURF_ISAR_EA | ISURF_ISAC_RESET | ISURF_ARCOFI_RESET); initisac(cs); cs->writeisac(cs, ISAC_MASK, 0); cs->writeisac(cs, ISAC_CMDR, 0x41); } spin_unlock_irqrestore(&cs->lock, flags); return (ret); } return (isar_auxcmd(cs, ic)); } #ifdef __ISAPNP__ static struct pnp_card *pnp_c = NULL; #endif int setup_isurf(struct IsdnCard *card) { int ver; struct IsdnCardState *cs = card->cs; char tmp[64]; strcpy(tmp, ISurf_revision); printk(KERN_INFO "HiSax: ISurf driver Rev. %s\n", HiSax_getrev(tmp)); if (cs->typ != ISDN_CTYPE_ISURF) return (0); if (card->para[1] && card->para[2]) { cs->hw.isurf.reset = card->para[1]; cs->hw.isurf.phymem = card->para[2]; cs->irq = card->para[0]; } else { #ifdef __ISAPNP__ if (isapnp_present()) { struct pnp_dev *pnp_d = NULL; int err; cs->subtyp = 0; if ((pnp_c = pnp_find_card( ISAPNP_VENDOR('S', 'I', 'E'), ISAPNP_FUNCTION(0x0010), pnp_c))) { if (!(pnp_d = pnp_find_dev(pnp_c, ISAPNP_VENDOR('S', 'I', 'E'), ISAPNP_FUNCTION(0x0010), pnp_d))) { printk(KERN_ERR "ISurfPnP: PnP error card found, no device\n"); return (0); } pnp_disable_dev(pnp_d); err = pnp_activate_dev(pnp_d); if (err < 0) { pr_warn("%s: pnp_activate_dev ret=%d\n", __func__, err); return 0; } cs->hw.isurf.reset = pnp_port_start(pnp_d, 0); cs->hw.isurf.phymem = pnp_mem_start(pnp_d, 1); cs->irq = pnp_irq(pnp_d, 0); if (!cs->irq || !cs->hw.isurf.reset || !cs->hw.isurf.phymem) { printk(KERN_ERR "ISurfPnP:some resources are missing %d/%x/%lx\n", cs->irq, cs->hw.isurf.reset, cs->hw.isurf.phymem); pnp_disable_dev(pnp_d); return (0); } } else { printk(KERN_INFO "ISurfPnP: no ISAPnP card found\n"); return (0); } } else { printk(KERN_INFO "ISurfPnP: no ISAPnP bus found\n"); return (0); } #else printk(KERN_WARNING "HiSax: Siemens I-Surf port/mem not set\n"); return (0); #endif } if (!request_region(cs->hw.isurf.reset, 1, "isurf isdn")) { printk(KERN_WARNING "HiSax: Siemens I-Surf config port %x already in use\n", cs->hw.isurf.reset); return (0); } if (!request_region(cs->hw.isurf.phymem, ISURF_IOMEM_SIZE, "isurf iomem")) { printk(KERN_WARNING "HiSax: Siemens I-Surf memory region " "%lx-%lx already in use\n", cs->hw.isurf.phymem, cs->hw.isurf.phymem + ISURF_IOMEM_SIZE); release_region(cs->hw.isurf.reset, 1); return (0); } cs->hw.isurf.isar = ioremap(cs->hw.isurf.phymem, ISURF_IOMEM_SIZE); cs->hw.isurf.isac = cs->hw.isurf.isar + ISURF_ISAC_OFFSET; printk(KERN_INFO "ISurf: defined at 0x%x 0x%lx IRQ %d\n", cs->hw.isurf.reset, cs->hw.isurf.phymem, cs->irq); setup_isac(cs); cs->cardmsg = &ISurf_card_msg; cs->irq_func = &isurf_interrupt; cs->auxcmd = &isurf_auxcmd; cs->readisac = &ReadISAC; cs->writeisac = &WriteISAC; cs->readisacfifo = &ReadISACfifo; cs->writeisacfifo = &WriteISACfifo; cs->bcs[0].hw.isar.reg = &cs->hw.isurf.isar_r; cs->bcs[1].hw.isar.reg = &cs->hw.isurf.isar_r; test_and_set_bit(HW_ISAR, &cs->HW_Flags); ISACVersion(cs, "ISurf:"); cs->BC_Read_Reg = &ReadISAR; cs->BC_Write_Reg = &WriteISAR; cs->BC_Send_Data = &isar_fill_fifo; ver = ISARVersion(cs, "ISurf:"); if (ver < 0) { printk(KERN_WARNING "ISurf: wrong ISAR version (ret = %d)\n", ver); release_io_isurf(cs); return (0); } return (1); }