minimal pci support
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leo
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1b1e1884b3
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080ee49d98
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/* $NetBSD: pci_machdep.c,v 1.1.1.1 1996/10/05 21:41:36 leo Exp $ */
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/*
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* Copyright (c) 1996 Leo Weppelman. All rights reserved.
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* Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
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* Copyright (c) 1994 Charles Hannum. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Charles Hannum.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/systm.h>
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#include <sys/errno.h>
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#include <sys/device.h>
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#include <vm/vm.h>
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#include <vm/vm_kern.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <machine/cpu.h>
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#include <machine/iomap.h>
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#include <atari/atari/device.h>
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int pcibusprint __P((void *auxp, const char *));
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int pcibusmatch __P((struct device *, void *, void *));
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void pcibusattach __P((struct device *, struct device *, void *));
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static int pci_config_offset __P((pcitag_t));
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/*
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* Swap a long (abcd -> dcba). The pci-config area has the wrong
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* endianess....
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*/
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#define swapl(x) \
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{ asm volatile ("rorw #8,%0\nswap %0\nrorw #8,%0" : : "r" (x)); }
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struct cfattach pcibus_ca = {
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sizeof(struct device), pcibusmatch, pcibusattach
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};
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struct cfdriver pcibus_cd = {
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NULL, "pcibus", DV_DULL
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};
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int
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pcibusmatch(pdp, match, auxp)
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struct device *pdp;
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void *match, *auxp;
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{
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struct cfdata *cfp = match;
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if(atari_realconfig == 0)
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return (0);
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if (strcmp((char *)auxp, "pcibus") || cfp->cf_unit != 0)
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return(0);
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return(machineid & ATARI_HADES ? 1 : 0);
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}
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void
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pcibusattach(pdp, dp, auxp)
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struct device *pdp, *dp;
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void *auxp;
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{
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struct pcibus_attach_args pba;
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pba.pba_busname = "pci";
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pba.pba_bc = NULL;
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pba.pba_bus = 0;
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config_found(dp, &pba, pcibusprint);
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}
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int
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pcibusprint(auxp, name)
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void *auxp;
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const char *name;
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{
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if(name == NULL)
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return(UNCONF);
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return(QUIET);
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}
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void
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pci_attach_hook(parent, self, pba)
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struct device *parent, *self;
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struct pcibus_attach_args *pba;
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{
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}
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/*
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* Atari_init.c maps the config areas NBPG bytes apart....
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*/
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static int pci_config_offset(tag)
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pcitag_t tag;
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{
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int device;
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device = (tag >> 11) & 0x1f;
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return(device * NBPG);
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}
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int
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pci_bus_maxdevs(pc, busno)
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pci_chipset_tag_t pc;
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int busno;
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{
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return (4);
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}
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pcitag_t
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pci_make_tag(pc, bus, device, function)
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pci_chipset_tag_t pc;
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int bus, device, function;
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{
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return ((bus << 16) | (device << 11) | (function << 8));
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}
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pcireg_t
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pci_conf_read(pc, tag, reg)
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pci_chipset_tag_t pc;
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pcitag_t tag;
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int reg;
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{
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u_long data;
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data = *(u_long *)(pci_conf_addr + pci_config_offset(tag) + reg);
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swapl(data);
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return(data);
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}
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void
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pci_conf_write(pc, tag, reg, data)
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pci_chipset_tag_t pc;
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pcitag_t tag;
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int reg;
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pcireg_t data;
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{
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swapl(data);
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*((u_long *)(pci_conf_addr + pci_config_offset(tag) + reg)) = data;
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}
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/*
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* XXX: All pci_intr_*() functions are no-op's for now...
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*/
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int
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pci_intr_map(pc, intrtag, pin, line, ihp)
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pci_chipset_tag_t pc;
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pcitag_t intrtag;
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int pin, line;
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pci_intr_handle_t *ihp;
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{
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/* XXXXXXXXX */
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*ihp = -1;
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return 1;
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}
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const char *
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pci_intr_string(pc, ih)
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pci_chipset_tag_t pc;
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pci_intr_handle_t ih;
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{
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static char irqstr[8]; /* 4 + 2 + NULL + sanity */
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if (ih == 0)
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panic("pci_intr_string: bogus handle 0x%x\n", ih);
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sprintf(irqstr, "irq %d", ih);
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return (irqstr);
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}
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void *
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pci_intr_establish(pc, ih, level, func, arg)
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pci_chipset_tag_t pc;
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pci_intr_handle_t ih;
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int level, (*func) __P((void *));
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void *arg;
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{
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/* XXXX */
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return NULL;
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}
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void
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pci_intr_disestablish(pc, cookie)
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pci_chipset_tag_t pc;
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void *cookie;
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{
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/* XXXX */
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}
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@ -0,0 +1,57 @@
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/* $NetBSD: pci_machdep.h,v 1.1.1.1 1996/10/05 21:41:36 leo Exp $ */
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/*
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* Copyright (c) 1996 Leo Weppelman. All rights reserved.
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* Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
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* Copyright (c) 1994 Charles Hannum. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Charles Hannum.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Types provided to machine-independent PCI code
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*/
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typedef void *pci_chipset_tag_t;
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typedef u_long pcitag_t;
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typedef int pci_intr_handle_t;
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/*
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* Functions provided to machine-independent PCI code.
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*/
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void pci_attach_hook __P((struct device *, struct device *,
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struct pcibus_attach_args *));
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int pci_bus_maxdevs __P((pci_chipset_tag_t, int));
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pcitag_t pci_make_tag __P((pci_chipset_tag_t, int, int, int));
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pcireg_t pci_conf_read __P((pci_chipset_tag_t, pcitag_t, int));
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void pci_conf_write __P((pci_chipset_tag_t, pcitag_t, int,
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pcireg_t));
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int pci_intr_map __P((pci_chipset_tag_t, pcitag_t, int, int,
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pci_intr_handle_t *));
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const char *pci_intr_string __P((pci_chipset_tag_t, pci_intr_handle_t));
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void *pci_intr_establish __P((pci_chipset_tag_t, pci_intr_handle_t,
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int, int (*)(void *), void *));
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void pci_intr_disestablish __P((pci_chipset_tag_t, void *));
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