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xenfunc.h revision 1.3.4.1 
      1 /*	$NetBSD: xenfunc.h,v 1.3.4.1 2005/04/29 11:28:29 kent Exp $	*/
      2 
      3 /*
      4  *
      5  * Copyright (c) 2004 Christian Limpach.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *      This product includes software developed by Christian Limpach.
     19  * 4. The name of the author may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 
     35 #ifndef _XEN_XENFUNC_H_
     36 #define _XEN_XENFUNC_H_
     37 
     38 #include <machine/xen.h>
     39 #include <machine/hypervisor.h>
     40 #include <machine/evtchn.h>
     41 #include <machine/xenpmap.h>
     42 #include <machine/pte.h>
     43 
     44 #ifdef XENDEBUG_LOW
     45 #define	__PRINTK(x) printk x
     46 #else
     47 #define	__PRINTK(x)
     48 #endif
     49 
     50 void xen_set_ldt(vaddr_t, uint32_t);
     51 void xen_update_descriptor(union descriptor *, union descriptor *);
     52 
     53 static __inline void
     54 invlpg(u_int addr)
     55 {
     56 	xpq_queue_invlpg(addr);
     57 	xpq_flush_queue();
     58 }
     59 
     60 static __inline void
     61 lldt(u_short sel)
     62 {
     63 
     64 	/* __PRINTK(("ldt %x\n", IDXSELN(sel))); */
     65 	if (sel == GSEL(GLDT_SEL, SEL_KPL))
     66 		xen_set_ldt((vaddr_t)ldt, NLDT);
     67 	else
     68 		xen_set_ldt(cpu_info_primary.ci_gdt[IDXSELN(sel)].ld.ld_base,
     69 		    cpu_info_primary.ci_gdt[IDXSELN(sel)].ld.ld_entries);
     70 }
     71 
     72 static __inline void
     73 ltr(u_short sel)
     74 {
     75 	__PRINTK(("XXX ltr not supported\n"));
     76 }
     77 
     78 static __inline void
     79 lcr0(u_int val)
     80 {
     81 	__PRINTK(("XXX lcr0 not supported\n"));
     82 }
     83 
     84 static __inline u_int
     85 rcr0(void)
     86 {
     87 	__PRINTK(("XXX rcr0 not supported\n"));
     88 	return 0;
     89 }
     90 
     91 #define lcr3(_v) _lcr3((_v), __FILE__, __LINE__)
     92 static __inline void
     93 _lcr3(u_int val, char *file, int line)
     94 {
     95 /* 	__PRINTK(("lcr3 %08x at %s:%d\n", val, file, line)); */
     96 	xpq_queue_pt_switch(xpmap_ptom(val) & PG_FRAME);
     97 	xpq_flush_queue();
     98 }
     99 
    100 static __inline void
    101 tlbflush(void)
    102 {
    103 	xpq_queue_tlb_flush();
    104 	xpq_flush_queue();
    105 }
    106 
    107 #define	tlbflushg()	tlbflush()	/* we don't use PGE */
    108 
    109 static __inline u_int
    110 rdr6(void)
    111 {
    112 	u_int val;
    113 
    114 	val = HYPERVISOR_get_debugreg(6);
    115 	return val;
    116 }
    117 
    118 static __inline void
    119 ldr6(u_int val)
    120 {
    121 
    122 	HYPERVISOR_set_debugreg(6, val);
    123 }
    124 
    125 #endif /* _XEN_XENFUNC_H_ */
    126