b5469e8b58
mechanical change. This opens the door for using PV device drivers under Xen HVM on i386, as well as more general harmonisation of i386 and amd64 Xen support in FreeBSD. Reviewed by: cperciva MFC after: 3 weeks
116 lines
3.5 KiB
C
116 lines
3.5 KiB
C
/*-
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* Copyright (c) 2008 Kip Macy
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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef XENVAR_H_
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#define XENVAR_H_
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#include <machine/xen/features.h>
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#if defined(XEN)
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#define XBOOTUP 0x1
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#define XPMAP 0x2
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extern int xendebug_flags;
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#ifndef NOXENDEBUG
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#define XENPRINTF printk
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#else
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#define XENPRINTF printf
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#endif
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extern xen_pfn_t *xen_phys_machine;
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extern xen_pfn_t *xen_pfn_to_mfn_frame_list[16];
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extern xen_pfn_t *xen_pfn_to_mfn_frame_list_list;
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#if 0
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#define TRACE_ENTER XENPRINTF("(file=%s, line=%d) entered %s\n", __FILE__, __LINE__, __FUNCTION__)
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#define TRACE_EXIT XENPRINTF("(file=%s, line=%d) exiting %s\n", __FILE__, __LINE__, __FUNCTION__)
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#define TRACE_DEBUG(argflags, _f, _a...) \
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if (xendebug_flags & argflags) XENPRINTF("(file=%s, line=%d) " _f "\n", __FILE__, __LINE__, ## _a);
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#else
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#define TRACE_ENTER
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#define TRACE_EXIT
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#define TRACE_DEBUG(argflags, _f, _a...)
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#endif
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extern xen_pfn_t *xen_machine_phys;
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/* Xen starts physical pages after the 4MB ISA hole -
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* FreeBSD doesn't
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*/
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#undef ADD_ISA_HOLE /* XXX */
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#ifdef ADD_ISA_HOLE
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#define ISA_INDEX_OFFSET 1024
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#define ISA_PDR_OFFSET 1
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#else
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#define ISA_INDEX_OFFSET 0
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#define ISA_PDR_OFFSET 0
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#endif
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#define PFNTOMFN(i) (xen_phys_machine[(i)])
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#define MFNTOPFN(i) ((vm_paddr_t)xen_machine_phys[(i)])
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#define VTOP(x) ((((uintptr_t)(x))) - KERNBASE)
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#define PTOV(x) (((uintptr_t)(x)) + KERNBASE)
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#define VTOPFN(x) (VTOP(x) >> PAGE_SHIFT)
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#define PFNTOV(x) PTOV((vm_paddr_t)(x) << PAGE_SHIFT)
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#define VTOMFN(va) (vtomach(va) >> PAGE_SHIFT)
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#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
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#define phystomach(pa) (((vm_paddr_t)(PFNTOMFN((pa) >> PAGE_SHIFT))) << PAGE_SHIFT)
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#define machtophys(ma) (((vm_paddr_t)(MFNTOPFN((ma) >> PAGE_SHIFT))) << PAGE_SHIFT)
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void xpq_init(void);
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#define BITS_PER_LONG 32
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#define NR_CPUS MAX_VIRT_CPUS
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#define BITS_TO_LONGS(bits) \
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(((bits)+BITS_PER_LONG-1)/BITS_PER_LONG)
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#define DECLARE_BITMAP(name,bits) \
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unsigned long name[BITS_TO_LONGS(bits)]
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typedef struct { DECLARE_BITMAP(bits, NR_CPUS); } xen_cpumask_t;
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int xen_create_contiguous_region(vm_page_t pages, int npages);
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void xen_destroy_contiguous_region(void * addr, int npages);
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#elif defined(XENHVM)
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#define PFNTOMFN(pa) (pa)
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#define MFNTOPFN(ma) (ma)
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#endif /* !XEN && !XENHVM */
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#endif
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