diff --git a/sys/arch/atari/isa/isa_machdep.c b/sys/arch/atari/isa/isa_machdep.c new file mode 100644 index 000000000000..7a8caaf5140f --- /dev/null +++ b/sys/arch/atari/isa/isa_machdep.c @@ -0,0 +1,218 @@ +/* $NetBSD: isa_machdep.c,v 1.1.1.1 1997/07/15 08:17:39 leo Exp $ */ + +/* + * Copyright (c) 1997 Leo Weppelman. All rights reserved. + * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. + * Copyright (c) 1994 Charles Hannum. 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 Charles Hannum. + * 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 + +static int isabusprint __P((void *auxp, const char *)); +static int isabusmatch __P((struct device *, struct cfdata *, void *)); +static void isabusattach __P((struct device *, struct device *, void *)); + +struct cfattach isabus_ca = { + sizeof(struct device), isabusmatch, isabusattach +}; + +struct cfdriver isabus_cd = { + NULL, "isabus", DV_DULL +}; + +int +isabusmatch(pdp, cfp, auxp) +struct device *pdp; +struct cfdata *cfp; +void *auxp; +{ + if(atari_realconfig == 0) + return (0); + if (strcmp((char *)auxp, "isabus") || cfp->cf_unit != 0) + return(0); + return(machineid & ATARI_HADES ? 1 : 0); +} + +void +isabusattach(pdp, dp, auxp) +struct device *pdp, *dp; +void *auxp; +{ + struct isabus_attach_args iba; + + iba.iba_busname = "isa"; + iba.iba_iot = ISA_IOSTART; + iba.iba_memt = ISA_MEMSTART; + + MFP->mf_aer |= (IO_ISA1|IO_ISA2); /* ISA interrupts: LOW->HIGH */ + + printf("\n"); + config_found(dp, &iba, isabusprint); +} + +int +isabusprint(auxp, name) +void *auxp; +const char *name; +{ + if(name == NULL) + return(UNCONF); + return(QUIET); +} + +void +isa_attach_hook(parent, self, iba) + struct device *parent, *self; + struct isabus_attach_args *iba; +{ +} + +/* + * The interrupt stuff is rather ugly. On the Hades, all interrupt lines + * for a slot are wired together and connected to either IO3 (slot1) or + * IO7 (slot2). Since no info can be obtained about the slot position + * at isa_intr_establish() time, the following assumption is made: + * - irq <= 6 -> slot 1 + * - irq > 6 -> slot 2 + */ +static isa_intr_info_t iinfo[2] = { { -1 }, { -1 } }; + +static int iifun __P((int, int)); + +static int +iifun(slot, sr) +int slot; +int sr; +{ + isa_intr_info_t *iinfo_p; + int s; + + iinfo_p = &iinfo[slot]; + + /* + * Disable the interrupts + */ + if (slot == 1) + MFP->mf_imrb &= ~(IB_ISA1); + else MFP->mf_imra &= ~(IA_ISA2); + + + if ((sr & PSL_IPL) >= iinfo_p->ipl) { + /* + * We're running at a too high priority now. + */ + add_sicallback((si_farg)iifun, (void*)slot, 0); + } + else { + s = splx(iinfo_p->ipl); + (void) (iinfo_p->ifunc)(iinfo_p->iarg, 0); + splx(s); + + /* + * Re-enable interrupts after handling + */ + if (slot == 1) + MFP->mf_imrb |= IB_ISA1; + else MFP->mf_imra |= IA_ISA2; + } + return 1; +} + +void * +isa_intr_establish(ic, irq, type, level, ih_fun, ih_arg) + isa_chipset_tag_t ic; + int irq, type, level; + hw_ifun_t ih_fun; + void *ih_arg; +{ + isa_intr_info_t *iinfo_p; + struct intrhand *ihand; + int slot; + +printf("isa_intr_est: irq:%d, type:%d, level:%d\n",irq,type,level); + slot = (irq <= 6) ? 1 : 2; + iinfo_p = &iinfo[slot]; + + if (iinfo_p->slot > 0) + panic("isa_intr_establish: interrupt was already established\n"); + + ihand = intr_establish((slot == 1) ? 3 : 15, USER_VEC, 0, + (hw_ifun_t)iifun, (void *)slot); + if (ihand != NULL) { + iinfo_p->slot = slot; + iinfo_p->ipl = level; + iinfo_p->ifunc = ih_fun; + iinfo_p->iarg = ih_arg; + iinfo_p->ihand = ihand; + + /* + * Enable (unmask) the interrupt + */ + if (slot == 1) { + MFP->mf_imrb |= IB_ISA1; + MFP->mf_ierb |= IB_ISA1; + } + else { + MFP->mf_imra |= IA_ISA2; + MFP->mf_iera |= IA_ISA2; + } + return(iinfo_p); + } + return NULL; +} + +void +isa_intr_disestablish(ic, handler) + isa_chipset_tag_t ic; + void *handler; +{ + isa_intr_info_t *iinfo_p = (isa_intr_info_t *)handler; + + if (iinfo_p->slot < 0) + panic("isa_intr_disestablish: interrupt was not established\n"); + + (void) intr_disestablish(iinfo_p->ihand); + iinfo_p->slot = -1; +} diff --git a/sys/arch/atari/isa/isa_machdep.h b/sys/arch/atari/isa/isa_machdep.h new file mode 100644 index 000000000000..ed70e6ca76a8 --- /dev/null +++ b/sys/arch/atari/isa/isa_machdep.h @@ -0,0 +1,59 @@ +/* $NetBSD: isa_machdep.h,v 1.1.1.1 1997/07/15 08:17:39 leo Exp $ */ + +/* + * Copyright (c) 1997 Leo Weppelman. 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 Leo Weppelman. + * 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. + */ + +#ifndef _ATARI_ISA_MACHDEP_H_ +#define _ATARI_ISA_MACHDEP_H_ + +#include + +#define ISA_IOSTART 0xfff30000 /* XXX: Range with byte frobbing */ +#define ISA_MEMSTART 0xff000000 /* XXX: Hades only */ + +typedef void *isa_chipset_tag_t; + +typedef struct { + int slot; /* 1/2, determines interrupt line */ + int ipl; /* ipl requested */ + hw_ifun_t ifunc; /* function to call */ + void *iarg; /* argument for 'ifunc' */ + struct intrhand *ihand; /* save this for disestablishing */ +} isa_intr_info_t; + +/* + * Functions provided to machine-independent ISA code. + */ +void isa_attach_hook __P((struct device *, struct device *, + struct isabus_attach_args *)); +void *isa_intr_establish __P((isa_chipset_tag_t ic, int irq, int type, + int level, hw_ifun_t ih_fun, void *ih_arg)); +void isa_intr_disestablish __P((isa_chipset_tag_t ic, void *handler)); + +#endif /* _ATARI_ISA_MACHDEP_H_ */