/* * We cannot (yet) probe for an IO mapped card, although we can check that * it's where we were told it was, and even do autoirq. */ static int __init com20020isa_probe(struct net_device *dev) { int ioaddr; unsigned long airqmask; struct arcnet_local *lp = dev->priv; #ifndef MODULE arcnet_init(); #endif BUGLVL(D_NORMAL) printk(VERSION); ioaddr = dev->base_addr; if (!ioaddr) { BUGMSG(D_NORMAL, "No autoprobe (yet) for IO mapped cards; you " "must specify the base address!\n"); return -ENODEV; } if (check_region(ioaddr, ARCNET_TOTAL_SIZE)) { BUGMSG(D_NORMAL, "IO region %xh-%xh already allocated.\n", ioaddr, ioaddr + ARCNET_TOTAL_SIZE - 1); return -ENXIO; } if (ASTATUS() == 0xFF) { BUGMSG(D_NORMAL, "IO address %x empty\n", ioaddr); return -ENODEV; } if (com20020_check(dev)) return -ENODEV; if (!dev->irq) { /* if we do this, we're sure to get an IRQ since the * card has just reset and the NORXflag is on until * we tell it to start receiving. */ BUGMSG(D_INIT_REASONS, "intmask was %02Xh\n", inb(_INTMASK)); outb(0, _INTMASK); airqmask = probe_irq_on(); outb(NORXflag, _INTMASK); udelay(1); outb(0, _INTMASK); dev->irq = probe_irq_off(airqmask); if (dev->irq <= 0) { BUGMSG(D_INIT_REASONS, "Autoprobe IRQ failed first time\n"); airqmask = probe_irq_on(); outb(NORXflag, _INTMASK); udelay(5); outb(0, _INTMASK); dev->irq = probe_irq_off(airqmask); if (dev->irq <= 0) { BUGMSG(D_NORMAL, "Autoprobe IRQ failed.\n"); return -ENODEV; } } } lp->card_name = "ISA COM20020"; return com20020_found(dev, 0); }
static int __init com20020pci_init(void) { BUGLVL(D_NORMAL) printk(VERSION); #ifndef MODULE arcnet_init(); #endif return pci_module_init(&com20020pci_driver); }
int __init com90xx_probe(struct net_device *dev) { int count, status, ioaddr, numprint, airq, retval = -ENODEV, openparen = 0; unsigned long airqmask; int ports[(0x3f0 - 0x200) / 16 + 1] = {0}; u_long shmems[(0xFF800 - 0xA0000) / 2048 + 1] = {0}; int numports, numshmems, *port; u_long *shmem; if (!dev && com90xx_skip_probe) return -ENODEV; #ifndef MODULE arcnet_init(); #endif BUGLVL(D_NORMAL) printk(VERSION); /* set up the arrays where we'll store the possible probe addresses */ numports = numshmems = 0; if (dev && dev->base_addr) ports[numports++] = dev->base_addr; else for (count = 0x200; count <= 0x3f0; count += 16) ports[numports++] = count; if (dev && dev->mem_start) shmems[numshmems++] = dev->mem_start; else for (count = 0xA0000; count <= 0xFF800; count += 2048) shmems[numshmems++] = count; /* Stage 1: abandon any reserved ports, or ones with status==0xFF * (empty), and reset any others by reading the reset port. */ numprint = -1; for (port = &ports[0]; port - ports < numports; port++) { numprint++; numprint %= 8; if (!numprint) { BUGMSG2(D_INIT, "\n"); BUGMSG2(D_INIT, "S1: "); } BUGMSG2(D_INIT, "%Xh ", *port); ioaddr = *port; if (check_region(*port, ARCNET_TOTAL_SIZE)) { BUGMSG2(D_INIT_REASONS, "(check_region)\n"); BUGMSG2(D_INIT_REASONS, "S1: "); BUGLVL(D_INIT_REASONS) numprint = 0; *port = ports[numports - 1]; numports--; port--; continue; } if (ASTATUS() == 0xFF) { BUGMSG2(D_INIT_REASONS, "(empty)\n"); BUGMSG2(D_INIT_REASONS, "S1: "); BUGLVL(D_INIT_REASONS) numprint = 0; *port = ports[numports - 1]; numports--; port--; continue; } inb(_RESET); /* begin resetting card */ BUGMSG2(D_INIT_REASONS, "\n"); BUGMSG2(D_INIT_REASONS, "S1: "); BUGLVL(D_INIT_REASONS) numprint = 0; } BUGMSG2(D_INIT, "\n"); if (!numports) { BUGMSG2(D_NORMAL, "S1: No ARCnet cards found.\n"); return -ENODEV; } /* Stage 2: we have now reset any possible ARCnet cards, so we can't * do anything until they finish. If D_INIT, print the list of * cards that are left. */ numprint = -1; for (port = &ports[0]; port - ports < numports; port++) { numprint++; numprint %= 8; if (!numprint) { BUGMSG2(D_INIT, "\n"); BUGMSG2(D_INIT, "S2: "); } BUGMSG2(D_INIT, "%Xh ", *port); } BUGMSG2(D_INIT, "\n"); mdelay(RESETtime); /* Stage 3: abandon any shmem addresses that don't have the signature * 0xD1 byte in the right place, or are read-only. */ numprint = -1; for (shmem = &shmems[0]; shmem - shmems < numshmems; shmem++) { u_long ptr = *shmem; numprint++; numprint %= 8; if (!numprint) { BUGMSG2(D_INIT, "\n"); BUGMSG2(D_INIT, "S3: "); } BUGMSG2(D_INIT, "%lXh ", *shmem); if (check_mem_region(*shmem, BUFFER_SIZE)) { BUGMSG2(D_INIT_REASONS, "(check_mem_region)\n"); BUGMSG2(D_INIT_REASONS, "Stage 3: "); BUGLVL(D_INIT_REASONS) numprint = 0; *shmem = shmems[numshmems - 1]; numshmems--; shmem--; continue; } if (isa_readb(ptr) != TESTvalue) { BUGMSG2(D_INIT_REASONS, "(%02Xh != %02Xh)\n", isa_readb(ptr), TESTvalue); BUGMSG2(D_INIT_REASONS, "S3: "); BUGLVL(D_INIT_REASONS) numprint = 0; *shmem = shmems[numshmems - 1]; numshmems--; shmem--; continue; } /* By writing 0x42 to the TESTvalue location, we also make * sure no "mirror" shmem areas show up - if they occur * in another pass through this loop, they will be discarded * because *cptr != TESTvalue. */ isa_writeb(0x42, ptr); if (isa_readb(ptr) != 0x42) { BUGMSG2(D_INIT_REASONS, "(read only)\n"); BUGMSG2(D_INIT_REASONS, "S3: "); *shmem = shmems[numshmems - 1]; numshmems--; shmem--; continue; } BUGMSG2(D_INIT_REASONS, "\n"); BUGMSG2(D_INIT_REASONS, "S3: "); BUGLVL(D_INIT_REASONS) numprint = 0; } BUGMSG2(D_INIT, "\n"); if (!numshmems) { BUGMSG2(D_NORMAL, "S3: No ARCnet cards found.\n"); return -ENODEV; } /* Stage 4: something of a dummy, to report the shmems that are * still possible after stage 3. */ numprint = -1; for (shmem = &shmems[0]; shmem - shmems < numshmems; shmem++) { numprint++; numprint %= 8; if (!numprint) { BUGMSG2(D_INIT, "\n"); BUGMSG2(D_INIT, "S4: "); } BUGMSG2(D_INIT, "%lXh ", *shmem); } BUGMSG2(D_INIT, "\n"); /* Stage 5: for any ports that have the correct status, can disable * the RESET flag, and (if no irq is given) generate an autoirq, * register an ARCnet device. * * Currently, we can only register one device per probe, so quit * after the first one is found. */ numprint = -1; for (port = &ports[0]; port - ports < numports; port++) { numprint++; numprint %= 8; if (!numprint) { BUGMSG2(D_INIT, "\n"); BUGMSG2(D_INIT, "S5: "); } BUGMSG2(D_INIT, "%Xh ", *port); ioaddr = *port; status = ASTATUS(); if ((status & 0x9D) != (NORXflag | RECONflag | TXFREEflag | RESETflag)) { BUGMSG2(D_INIT_REASONS, "(status=%Xh)\n", status); BUGMSG2(D_INIT_REASONS, "S5: "); BUGLVL(D_INIT_REASONS) numprint = 0; *port = ports[numports - 1]; numports--; port--; continue; } ACOMMAND(CFLAGScmd | RESETclear | CONFIGclear); status = ASTATUS(); if (status & RESETflag) { BUGMSG2(D_INIT_REASONS, " (eternal reset, status=%Xh)\n", status); BUGMSG2(D_INIT_REASONS, "S5: "); BUGLVL(D_INIT_REASONS) numprint = 0; *port = ports[numports - 1]; numports--; port--; continue; } /* skip this completely if an IRQ was given, because maybe * we're on a machine that locks during autoirq! */ if (!dev || !dev->irq) { /* if we do this, we're sure to get an IRQ since the * card has just reset and the NORXflag is on until * we tell it to start receiving. */ airqmask = probe_irq_on(); AINTMASK(NORXflag); udelay(1); AINTMASK(0); airq = probe_irq_off(airqmask); if (airq <= 0) { BUGMSG2(D_INIT_REASONS, "(airq=%d)\n", airq); BUGMSG2(D_INIT_REASONS, "S5: "); BUGLVL(D_INIT_REASONS) numprint = 0; *port = ports[numports - 1]; numports--; port--; continue; } } else { airq = dev->irq; } BUGMSG2(D_INIT, "(%d,", airq); openparen = 1; /* Everything seems okay. But which shmem, if any, puts * back its signature byte when the card is reset? * * If there are multiple cards installed, there might be * multiple shmems still in the list. */ #ifdef FAST_PROBE if (numports > 1 || numshmems > 1) { inb(_RESET); mdelay(RESETtime); } else { /* just one shmem and port, assume they match */ isa_writeb(TESTvalue, shmems[0]); } #else inb(_RESET); mdelay(RESETtime); #endif for (shmem = &shmems[0]; shmem - shmems < numshmems; shmem++) { u_long ptr = *shmem; if (isa_readb(ptr) == TESTvalue) { /* found one */ BUGMSG2(D_INIT, "%lXh)\n", *shmem); openparen = 0; /* register the card */ retval = com90xx_found(dev, *port, airq, *shmem); numprint = -1; /* remove shmem from the list */ *shmem = shmems[numshmems - 1]; numshmems--; break; /* go to the next I/O port */ } else { BUGMSG2(D_INIT_REASONS, "%Xh-", isa_readb(ptr)); } } if (openparen) { BUGLVL(D_INIT) printk("no matching shmem)\n"); BUGLVL(D_INIT_REASONS) printk("S5: "); BUGLVL(D_INIT_REASONS) numprint = 0; } *port = ports[numports - 1]; numports--; port--; } BUGLVL(D_INIT_REASONS) printk("\n"); /* Now put back TESTvalue on all leftover shmems. */ for (shmem = &shmems[0]; shmem - shmems < numshmems; shmem++) isa_writeb(TESTvalue, *shmem); if (retval && dev && !numcards) BUGMSG2(D_NORMAL, "S5: No ARCnet cards found.\n"); return retval; }