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xenfunc.h revision 1.9.6.1 
      1 /*	$NetBSD: xenfunc.h,v 1.9.6.1 2006/04/22 11:38:11 simonb 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 	int s = splvm();
     57 	xpq_queue_invlpg(addr);
     58 	xpq_flush_queue();
     59 	splx(s);
     60 }
     61 
     62 static __inline void
     63 lldt(u_short sel)
     64 {
     65 
     66 	/* __PRINTK(("ldt %x\n", IDXSELN(sel))); */
     67 	if (sel == GSEL(GLDT_SEL, SEL_KPL))
     68 		xen_set_ldt((vaddr_t)ldt, NLDT);
     69 	else
     70 		xen_set_ldt(cpu_info_primary.ci_gdt[IDXSELN(sel)].ld.ld_base,
     71 		    cpu_info_primary.ci_gdt[IDXSELN(sel)].ld.ld_entries);
     72 }
     73 
     74 static __inline void
     75 ltr(u_short sel)
     76 {
     77 	__PRINTK(("XXX ltr not supported\n"));
     78 }
     79 
     80 static __inline void
     81 lcr0(u_int val)
     82 {
     83 	__PRINTK(("XXX lcr0 not supported\n"));
     84 }
     85 
     86 static __inline u_int
     87 rcr0(void)
     88 {
     89 	__PRINTK(("XXX rcr0 not supported\n"));
     90 	return 0;
     91 }
     92 
     93 #define lcr3(_v) _lcr3((_v), __FILE__, __LINE__)
     94 static __inline void
     95 _lcr3(u_int val, const char *file, int line)
     96 {
     97 	int s = splvm();
     98 /* 	__PRINTK(("lcr3 %08x at %s:%d\n", val, file, line)); */
     99 	xpq_queue_pt_switch(xpmap_ptom(val) & PG_FRAME);
    100 	xpq_flush_queue();
    101 	splx(s);
    102 }
    103 
    104 static __inline void
    105 tlbflush(void)
    106 {
    107 	int s = splvm();
    108 	xpq_queue_tlb_flush();
    109 	xpq_flush_queue();
    110 	splx(s);
    111 }
    112 
    113 #define	tlbflushg()	tlbflush()	/* we don't use PGE */
    114 
    115 static __inline u_int
    116 rdr6(void)
    117 {
    118 	u_int val;
    119 
    120 	val = HYPERVISOR_get_debugreg(6);
    121 	return val;
    122 }
    123 
    124 static __inline void
    125 ldr6(u_int val)
    126 {
    127 
    128 	HYPERVISOR_set_debugreg(6, val);
    129 }
    130 
    131 #endif /* _XEN_XENFUNC_H_ */
    132