usr/src/psm/promif/ieee1275/sun4u/prom_tlb.c

   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 2010 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #include <sys/promif.h>
  27 #include <sys/promimpl.h>
  28
  29 /*
  30  * prom_itlb_load, prom_dtlb_load:
  31  *
  32  * Manage the Spitfire TLB. Returns 0 if successful, -1 otherwise.
  33  * Flush the address in context zero mapped by tte_data and virt,
  34  * and load the {i,d} tlb entry index with tte_data and virt.
  35  */
  36
  37 int
  38 prom_itlb_load(int index, unsigned long long tte_data, caddr_t virt)
  39 {
  40         cell_t ci[9];
  41         int rv;
  42         ihandle_t immu = prom_mmu_ihandle();
  43
  44         if ((immu == (ihandle_t)-1))
  45                 return (-1);
  46
  47         ci[0] = p1275_ptr2cell("call-method");  /* Service name */
  48         ci[1] = (cell_t)5;                      /* #argument cells */
  49         ci[2] = (cell_t)1;                      /* #result cells */
  50         ci[3] = p1275_ptr2cell("SUNW,itlb-load"); /* Arg1: method name */
  51         ci[4] = p1275_ihandle2cell(immu);       /* Arg2: mmu ihandle */
  52         ci[5] = p1275_ptr2cell(virt);           /* Arg3: SA1: virt */
  53         ci[6] = (cell_t)tte_data;               /* Arg4: SA2: tte_data */
  54         ci[7] = p1275_int2cell(index);          /* Arg5: SA3: index */
  55
  56         promif_preprom();
  57         rv = p1275_cif_handler(&ci);
  58         promif_postprom();
  59
  60         if (rv != 0)
  61                 return (-1);
  62         if (ci[8] != 0)                         /* Res1: Catch result */
  63                 return (-1);
  64         return (0);
  65 }
  66
  67 int
  68 prom_dtlb_load(int index, unsigned long long tte_data, caddr_t virt)
  69 {
  70         cell_t ci[9];
  71         int rv;
  72         ihandle_t immu = prom_mmu_ihandle();
  73
  74         if ((immu == (ihandle_t)-1))
  75                 return (-1);
  76
  77         ci[0] = p1275_ptr2cell("call-method");  /* Service name */
  78         ci[1] = (cell_t)5;                      /* #argument cells */
  79         ci[2] = (cell_t)1;                      /* #result cells */
  80         ci[3] = p1275_ptr2cell("SUNW,dtlb-load"); /* Arg1: method name */
  81         ci[4] = p1275_ihandle2cell(immu);       /* Arg2: mmu ihandle */
  82         ci[5] = p1275_ptr2cell(virt);           /* Arg3: SA1: virt */
  83         ci[6] = (cell_t)tte_data;               /* Arg4: SA2: tte_data */
  84         ci[7] = p1275_int2cell(index);          /* Arg5: SA3: index */
  85
  86         promif_preprom();
  87         rv = p1275_cif_handler(&ci);
  88         promif_postprom();
  89
  90         if (rv != 0)
  91                 return (-1);
  92         if (ci[8] != 0)                         /* Res1: Catch result */
  93                 return (-1);
  94         return (0);
  95 }