/*
*
* Copyright (c) 1998, 1999 Christoph Badura. 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.
*/
/*
* 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.
*/
int tcic_isa_alloc_iobase = TCIC_ISA_ALLOC_IOBASE;
int tcic_isa_alloc_iosize = TCIC_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 TCIC 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.
*
* XXX Do we care about this? the Versa doesn't use a tcic. -chb
*/
int tcic_isa_intr_alloc_mask = TCIC_ISA_INTR_ALLOC_MASK;
/*****************************************************************************
* End of configurable parameters.
*****************************************************************************/
#ifdef TCICISADEBUG
int tcic_isa_debug = 1;
#define DPRINTF(arg) if (tcic_isa_debug) printf arg;
#else
#define DPRINTF(arg)
#endif
int tcic_isa_probe(device_t, cfdata_t, void *);
void tcic_isa_attach(device_t, device_t, void *);
DPRINTF(("tcic probing 0x%03x\n", ia->ia_iomem[0].ir_addr));
found = 0;
/*
* First, check for the reserved bits to be zero.
*/
if (tcic_check_reserved_bits(iot, ioh)) {
DPRINTF(("tcic: reserved bits checked OK\n"));
/* Second, check whether the we know how to handle the chip. */
if ((val = tcic_chipid(iot, ioh))) {
DPRINTF(("tcic id: 0x%02x\n", val));
if (tcic_chipid_known(val))
found++;
}
}
else {
DPRINTF(("tcic: reserved bits didn't check OK\n"));
}
/*
* determine chip type and initialise some chip type dependent
* parameters in softc.
*/
sc->chipid = tcic_chipid(iot, ioh);
sc->validirqs = tcic_validirqs(sc->chipid);
/*
* allocate an irq. interrupts are relatively
* scarce but for TCIC controllers very infrequent.
*/
if (ia->ia_nirq < 1)
sc->irq = ISA_UNKNOWN_IRQ;
else
sc->irq = ia->ia_irq[0].ir_irq;
if (sc->irq == ISA_UNKNOWN_IRQ) {
if (isa_intr_alloc(ic,
sc->validirqs & (tcic_isa_intr_alloc_mask & 0xff00),
IST_EDGE, &sc->irq)) {
aprint_normal("\n");
aprint_error_dev(self, "can't allocate interrupt\n");
return;
}
aprint_normal(": using irq %d", sc->irq);
}
aprint_normal("\n");
tcic_attach(sc);
/*
* XXX mycroft recommends I/O space range 0x400-0xfff.
*/
/*
* 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 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
/* XXX should we convert level to pulse? -chb */
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(h->sc->intr_est,
h->sc->validirqs & tcic_isa_intr_alloc_mask, ist, &irq))
return (NULL);
if ((ih = isa_intr_establish(h->sc->intr_est, irq, ist, ipl,
fct, arg)) == NULL)
return (NULL);
