d46bbf4926
in the ARMADA config. On the M700 at least, the SMBus host controller lies it 0x4000 (the beginning of the range allocated by default to rbus), and stomping all over it causes bad things to happen.
137 lines
3.8 KiB
C
137 lines
3.8 KiB
C
/* $NetBSD: rbus_machdep.c,v 1.13 2001/08/28 09:25:53 ad Exp $ */
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/*
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* Copyright (c) 1999
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* HAYAKAWA Koichi. 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 HAYAKAWA Koichi.
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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 "opt_pcibios.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/extent.h>
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#include <uvm/uvm_extern.h>
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#include <sys/sysctl.h>
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#include <machine/bus.h>
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#include <dev/cardbus/rbus.h>
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#include <sys/device.h>
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#include <dev/isa/isareg.h>
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#include <dev/isa/isavar.h>
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#include <dev/pci/pcivar.h>
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#ifdef PCIBIOS_ADDR_FIXUP
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#include <arch/i386/pci/pci_addr_fixup.h>
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#endif
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#ifndef RBUS_IO_BASE
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#define RBUS_IO_BASE 0x4000
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#endif
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#ifndef RBUS_IO_SIZE
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#define RBUS_IO_SIZE 0x2000
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#endif
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#ifndef RBUS_MIN_START
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#define RBUS_MIN_START 0x40000000 /* 1GB */
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#endif
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bus_addr_t rbus_min_start = RBUS_MIN_START;
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/*
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* rbus_tag_t rbus_fakeparent_mem(struct pci_attach_args *pa)
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*
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* This function makes an rbus tag for memory space. This rbus tag
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* shares the all memory region of ex_iomem.
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*/
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rbus_tag_t
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rbus_pccbb_parent_mem(pa)
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struct pci_attach_args *pa;
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{
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bus_addr_t start, offset;
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bus_size_t size;
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struct extent *ex;
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#ifdef PCIBIOS_ADDR_FIXUP
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ex = pciaddr.extent_mem;
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#else
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extern struct extent *iomem_ex;
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ex = iomem_ex;
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#endif
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start = ex->ex_start;
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/*
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* XXX: unfortunately, iomem_ex cannot be used for the dynamic
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* bus_space allocatoin. There are some hidden memory (or
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* some obstacles which do not recognised by the kernel) in
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* the region governed by iomem_ex. So I decide to use only
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* very high address region.
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*
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* if defined PCIBIOS_ADDR_FIXUP, PCI device using area
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* which do not recognised by the kernel are already reserved.
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*/
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if (start < rbus_min_start)
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start = rbus_min_start;
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size = ex->ex_end - start;
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offset = 0;
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return rbus_new_root_share(pa->pa_memt, ex, start, size, 0);
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}
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/*
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* rbus_tag_t rbus_pccbb_parent_io(struct pci_attach_args *pa)
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*/
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rbus_tag_t
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rbus_pccbb_parent_io(pa)
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struct pci_attach_args *pa;
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{
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struct extent *ex;
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bus_addr_t start;
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bus_size_t size;
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rbus_tag_t ret;
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#ifdef PCIBIOS_ADDR_FIXUP
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ex = pciaddr.extent_port;
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#else
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extern struct extent *ioport_ex;
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ex = ioport_ex;
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#endif
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start = RBUS_IO_BASE;
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size = RBUS_IO_SIZE;
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ret = rbus_new_root_share(pa->pa_iot, ex, start, size, 0);
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if(ret == NULL) {
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panic("failed to alloc I/O space");
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}
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return ret;
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}
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