1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25 
  26 #include "assym.h"
  27 
  28 /*
  29  * Niagara processor specific assembly routines
  30  */
  31 
  32 #include <sys/asm_linkage.h>
  33 #include <sys/machasi.h>
  34 #include <sys/machparam.h>
  35 #include <sys/hypervisor_api.h>
  36 #include <sys/niagararegs.h>
  37 #include <sys/machasi.h>
  38 #include <sys/niagaraasi.h>
  39 #include <vm/hat_sfmmu.h>
  40 
  41         /*
  42          * hv_niagara_getperf(uint64_t perfreg, uint64_t *datap)
  43          */
  44         ENTRY(hv_niagara_getperf)
  45         mov     %o1, %o4                        ! save datap
  46         mov     HV_NIAGARA_GETPERF, %o5
  47         ta      FAST_TRAP
  48         brz,a   %o0, 1f
  49         stx     %o1, [%o4]
  50 1:
  51         retl
  52         nop
  53         SET_SIZE(hv_niagara_getperf)
  54 
  55         /*
  56          * hv_niagara_setperf(uint64_t perfreg, uint64_t data)
  57          */
  58         ENTRY(hv_niagara_setperf)
  59         mov     HV_NIAGARA_SETPERF, %o5
  60         ta      FAST_TRAP
  61         retl
  62         nop
  63         SET_SIZE(hv_niagara_setperf)
  64 
  65 /*
  66  * Invalidate all of the entries within the TSB, by setting the inv bit
  67  * in the tte_tag field of each tsbe.
  68  *
  69  * We take advantage of the fact that the TSBs are page aligned and a
  70  * multiple of PAGESIZE to use ASI_BLK_INIT_xxx ASI.
  71  *
  72  * See TSB_LOCK_ENTRY and the miss handlers for how this works in practice
  73  * (in short, we set all bits in the upper word of the tag, and we give the
  74  * invalid bit precedence over other tag bits in both places).
  75  */
  76         ENTRY(cpu_inv_tsb)
  77 
  78         /*
  79          * The following code assumes that the tsb_base (%o0) is 256 bytes
  80          * aligned and the tsb_bytes count is multiple of 256 bytes.
  81          */
  82 
  83         wr      %g0, ASI_BLK_INIT_ST_QUAD_LDD_P, %asi
  84         set     TSBTAG_INVALID, %o2
  85         sllx    %o2, 32, %o2            ! INV bit in upper 32 bits of the tag
  86 1:
  87         stxa    %o2, [%o0+0x0]%asi
  88         stxa    %o2, [%o0+0x40]%asi
  89         stxa    %o2, [%o0+0x80]%asi
  90         stxa    %o2, [%o0+0xc0]%asi
  91 
  92         stxa    %o2, [%o0+0x10]%asi
  93         stxa    %o2, [%o0+0x20]%asi
  94         stxa    %o2, [%o0+0x30]%asi
  95 
  96         stxa    %o2, [%o0+0x50]%asi
  97         stxa    %o2, [%o0+0x60]%asi
  98         stxa    %o2, [%o0+0x70]%asi
  99 
 100         stxa    %o2, [%o0+0x90]%asi
 101         stxa    %o2, [%o0+0xa0]%asi
 102         stxa    %o2, [%o0+0xb0]%asi
 103 
 104         stxa    %o2, [%o0+0xd0]%asi
 105         stxa    %o2, [%o0+0xe0]%asi
 106         stxa    %o2, [%o0+0xf0]%asi
 107 
 108         subcc   %o1, 0x100, %o1
 109         bgu,pt  %ncc, 1b
 110         add     %o0, 0x100, %o0
 111 
 112         membar  #Sync
 113         retl
 114         nop
 115 
 116         SET_SIZE(cpu_inv_tsb)
 117 
 118         /*
 119          * hv_niagara_mmustat_conf(uint64_t buf, uint64_t *prev_buf)
 120          */
 121         ENTRY(hv_niagara_mmustat_conf)
 122         mov     %o1, %o4                        ! save prev_buf
 123         mov     HV_NIAGARA_MMUSTAT_CONF, %o5
 124         ta      FAST_TRAP
 125         retl
 126         stx     %o1, [%o4]
 127         SET_SIZE(hv_niagara_mmustat_conf)
 128 
 129         /*
 130          * hv_niagara_mmustat_info(uint64_t *buf)
 131          */
 132         ENTRY(hv_niagara_mmustat_info)
 133         mov     %o0, %o4                        ! save buf
 134         mov     HV_NIAGARA_MMUSTAT_INFO, %o5
 135         ta      FAST_TRAP
 136         retl
 137         stx     %o1, [%o4]
 138         SET_SIZE(hv_niagara_mmustat_info)
 139