/* $NetBSD: rbus_machdep.c,v 1.2 2008/05/18 02:06:14 jmcneill Exp $ */ /* * Copyright (c) 1999 * HAYAKAWA Koichi. 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 HAYAKAWA Koichi. * 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 <sys/cdefs.h> __KERNEL_RCSID(0, "$NetBSD: rbus_machdep.c,v 1.2 2008/05/18 02:06:14 jmcneill Exp $"); #include "opt_pcifixup.h" #include <sys/param.h> #include <sys/systm.h> #include <sys/extent.h> #include <uvm/uvm_extern.h> #include <sys/sysctl.h> #include <machine/bus.h> #include <dev/cardbus/rbus.h> #include <sys/device.h> #include <dev/isa/isareg.h> #include <dev/isa/isavar.h> #include <dev/pci/pcivar.h> #if defined(PCI_ADDR_FIXUP) #include <arch/x86/pci/pci_addr_fixup.h> #endif #ifndef RBUS_IO_BASE #define RBUS_IO_BASE 0x4000 #endif #ifndef RBUS_IO_SIZE #define RBUS_IO_SIZE 0x2000 #endif #ifndef RBUS_MIN_START #define RBUS_MIN_START 0x0000000080000000 /* 2GB */ #endif bus_addr_t rbus_min_start = RBUS_MIN_START; /* * rbus_tag_t rbus_fakeparent_mem(struct pci_attach_args *pa) * * This function makes an rbus tag for memory space. This rbus tag * shares the all memory region of ex_iomem. */ rbus_tag_t rbus_pccbb_parent_mem(struct pci_attach_args *pa) { bus_addr_t start; bus_size_t size; extern struct extent *iomem_ex; struct extent *ex = iomem_ex; #if defined(PCI_ADDR_FIXUP) if (pciaddr.extent_mem != NULL) ex = pciaddr.extent_mem; #endif start = ex->ex_start; /* * XXX: unfortunately, iomem_ex cannot be used for the dynamic * bus_space allocation. There are some hidden memory (or * some obstacles which are not recognised by the kernel) in * the region governed by iomem_ex. So I decide to use only * very high address region. * * If pcibios_addr_fixup() succeeded, the PCI device is using an area * which is not recognised by the kernel as already reserved. */ if (start < rbus_min_start) start = rbus_min_start; size = ex->ex_end - start; return rbus_new_root_share(pa->pa_memt, ex, start, size, 0); } /* * rbus_tag_t rbus_pccbb_parent_io(struct pci_attach_args *pa) */ rbus_tag_t rbus_pccbb_parent_io(struct pci_attach_args *pa) { bus_addr_t start; bus_size_t size; rbus_tag_t ret; extern struct extent *ioport_ex; struct extent *ex = ioport_ex; #if defined(PCI_ADDR_FIXUP) if (pciaddr.extent_port != NULL) ex = pciaddr.extent_port; #endif start = RBUS_IO_BASE; size = RBUS_IO_SIZE; ret = rbus_new_root_share(pa->pa_iot, ex, start, size, 0); if (ret == NULL) panic("failed to alloc I/O space"); return ret; }