/* $NetBSD: i82365_isasubr.c,v 1.1 1998/06/07 18:28:31 sommerfe Exp $ */ #define PCICISADEBUG /* * Copyright (c) 1998 Bill Sommerfeld. All rights reserved. * Copyright (c) 1997 Marc Horowitz. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Marc Horowitz. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /***************************************************************************** * Configurable parameters. *****************************************************************************/ #include "opt_pcic_isa_alloc_iobase.h" #include "opt_pcic_isa_alloc_iosize.h" #include "opt_pcic_isa_intr_alloc_mask.h" /* * Default I/O allocation range. If both are set to non-zero, these * values will be used instead. Otherwise, the code attempts to probe * the bus width. Systems with 10 address bits should use 0x300 and 0xff. * Systems with 12 address bits (most) should use 0x400 and 0xbff. */ #ifndef PCIC_ISA_ALLOC_IOBASE #define PCIC_ISA_ALLOC_IOBASE 0 #endif #ifndef PCIC_ISA_ALLOC_IOSIZE #define PCIC_ISA_ALLOC_IOSIZE 0 #endif int pcic_isa_alloc_iobase = PCIC_ISA_ALLOC_IOBASE; int pcic_isa_alloc_iosize = PCIC_ISA_ALLOC_IOSIZE; /* * Default IRQ allocation bitmask. This defines the range of allowable * IRQs for PCMCIA slots. Useful if order of probing would screw up other * devices, or if PCIC hardware/cards have trouble with certain interrupt * lines. * * We disable IRQ 10 by default, since some common laptops (namely, the * NEC Versa series) reserve IRQ 10 for the docking station SCSI interface. */ #ifndef PCIC_ISA_INTR_ALLOC_MASK #define PCIC_ISA_INTR_ALLOC_MASK 0xfbff #endif int pcic_isa_intr_alloc_mask = PCIC_ISA_INTR_ALLOC_MASK; /***************************************************************************** * End of configurable parameters. *****************************************************************************/ #ifdef PCICISADEBUG int pcicsubr_debug = 0 /* XXX */ ; #define DPRINTF(arg) if (pcicsubr_debug) printf arg; #else #define DPRINTF(arg) #endif void pcic_isa_bus_width_probe (sc, iot, ioh, base, length) struct pcic_softc *sc; bus_space_tag_t iot; bus_space_handle_t ioh; bus_addr_t base; u_int32_t length; { bus_space_handle_t ioh_high; int i, iobuswidth, tmp1, tmp2; /* * figure out how wide the isa bus is. Do this by checking if the * pcic controller is mirrored 0x400 above where we expect it to be. */ iobuswidth = 12; /* Map i/o space. */ if (bus_space_map(iot, base + 0x400, length, 0, &ioh_high)) { printf("%s: can't map high i/o space\n", sc->dev.dv_xname); return; } for (i = 0; i < PCIC_NSLOTS; i++) { if (sc->handle[i].flags & PCIC_FLAG_SOCKETP) { /* * read the ident flags from the normal space and * from the mirror, and compare them */ bus_space_write_1(iot, ioh, PCIC_REG_INDEX, sc->handle[i].sock + PCIC_IDENT); tmp1 = bus_space_read_1(iot, ioh, PCIC_REG_DATA); bus_space_write_1(iot, ioh_high, PCIC_REG_INDEX, sc->handle[i].sock + PCIC_IDENT); tmp2 = bus_space_read_1(iot, ioh_high, PCIC_REG_DATA); if (tmp1 == tmp2) iobuswidth = 10; } } bus_space_free(iot, ioh_high, length); /* * XXX mycroft recommends I/O space range 0x400-0xfff . I should put * this in a header somewhere */ /* * XXX some hardware doesn't seem to grok addresses in 0x400 range-- * apparently missing a bit or more of address lines. (e.g. * CIRRUS_PD672X with Linksys EthernetCard ne2000 clone in TI * TravelMate 5000--not clear which is at fault) * * Add a kludge to detect 10 bit wide buses and deal with them, * and also a config file option to override the probe. */ if (iobuswidth == 10) { sc->iobase = 0x300; sc->iosize = 0x0ff; } else { #if 0 /* * This is what we'd like to use, but... */ sc->iobase = 0x400; sc->iosize = 0xbff; #else /* * ...the above bus width probe doesn't always work. * So, experimentation has shown the following range * to not lose on systems that 0x300-0x3ff loses on * (e.g. the NEC Versa 6030X). */ sc->iobase = 0x330; sc->iosize = 0x0cf; #endif } DPRINTF(("%s: bus_space_alloc range 0x%04lx-0x%04lx (probed)\n", sc->dev.dv_xname, (long) sc->iobase, (long) sc->iobase + sc->iosize)); if (pcic_isa_alloc_iobase && pcic_isa_alloc_iosize) { sc->iobase = pcic_isa_alloc_iobase; sc->iosize = pcic_isa_alloc_iosize; DPRINTF(("%s: bus_space_alloc range 0x%04lx-0x%04lx " "(config override)\n", sc->dev.dv_xname, (long) sc->iobase, (long) sc->iobase + sc->iosize)); } } void * pcic_isa_chip_intr_establish(pch, pf, ipl, fct, arg) pcmcia_chipset_handle_t pch; struct pcmcia_function *pf; int ipl; int (*fct) __P((void *)); void *arg; { struct pcic_handle *h = (struct pcic_handle *) pch; isa_chipset_tag_t ic = h->sc->intr_est; int irq, ist; void *ih; int reg; if (pf->cfe->flags & PCMCIA_CFE_IRQLEVEL) ist = IST_LEVEL; else if (pf->cfe->flags & PCMCIA_CFE_IRQPULSE) ist = IST_PULSE; else ist = IST_LEVEL; if (isa_intr_alloc(ic, PCIC_INTR_IRQ_VALIDMASK & pcic_isa_intr_alloc_mask, ist, &irq)) return (NULL); if ((ih = isa_intr_establish(ic, irq, ist, ipl, fct, arg)) == NULL) return (NULL); reg = pcic_read(h, PCIC_INTR); reg &= ~PCIC_INTR_IRQ_MASK; reg |= irq; pcic_write(h, PCIC_INTR, reg); h->ih_irq = irq; printf("%s: card irq %d\n", h->pcmcia->dv_xname, irq); return (ih); } void pcic_isa_chip_intr_disestablish(pch, ih) pcmcia_chipset_handle_t pch; void *ih; { struct pcic_handle *h = (struct pcic_handle *) pch; isa_chipset_tag_t ic = h->sc->intr_est; int reg; h->ih_irq = 0; reg = pcic_read(h, PCIC_INTR); reg &= ~(PCIC_INTR_IRQ_MASK | PCIC_INTR_ENABLE); pcic_write(h, PCIC_INTR, reg); isa_intr_disestablish(ic, ih); }