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[/] [or1k/] [tags/] [nog_patch_61/] [or1ksim/] [mmu/] [immu.c] - Diff between revs 1446 and 1447

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/* immu.c -- Instruction MMU simulation
/* immu.c -- Instruction MMU simulation
   Copyright (C) 1999 Damjan Lampret, lampret@opencores.org
   Copyright (C) 1999 Damjan Lampret, lampret@opencores.org
 
 
This file is part of OpenRISC 1000 Architectural Simulator.
This file is part of OpenRISC 1000 Architectural Simulator.
 
 
This program is free software; you can redistribute it and/or modify
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
(at your option) any later version.
 
 
This program is distributed in the hope that it will be useful,
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
GNU General Public License for more details.
 
 
You should have received a copy of the GNU General Public License
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
 
 
/* IMMU model (not functional yet, currently just copy of data cache). */
/* IMMU model (not functional yet, currently just copy of data cache). */
 
 
#include "config.h"
#include "config.h"
 
 
#ifdef HAVE_INTTYPES_H
#ifdef HAVE_INTTYPES_H
#include <inttypes.h>
#include <inttypes.h>
#endif
#endif
 
 
#include "port.h"
#include "port.h"
#include "arch.h"
#include "arch.h"
#include "immu.h"
#include "immu.h"
#include "abstract.h"
#include "abstract.h"
#include "opcode/or32.h"
#include "opcode/or32.h"
#include "spr_defs.h"
#include "spr_defs.h"
#include "execute.h"
#include "execute.h"
#include "stats.h"
#include "stats.h"
#include "sprs.h"
#include "sprs.h"
#include "except.h"
#include "except.h"
#include "sim-config.h"
#include "sim-config.h"
#include "debug.h"
#include "debug.h"
 
 
DEFAULT_DEBUG_CHANNEL(immu);
DEFAULT_DEBUG_CHANNEL(immu);
 
 
extern int cont_run;
extern int cont_run;
 
 
/* Insn MMU */
/* Insn MMU */
 
 
static inline oraddr_t immu_simulate_tlb(oraddr_t virtaddr)
static inline oraddr_t immu_simulate_tlb(oraddr_t virtaddr)
{
{
  int set, way = -1;
  int set, way = -1;
  int i;
  int i;
  oraddr_t tagaddr;
  oraddr_t tagaddr;
  oraddr_t vpn, ppn;
  oraddr_t vpn, ppn;
 
 
  if (!(mfspr(SPR_SR) & SPR_SR_IME) || !(testsprbits(SPR_UPR, SPR_UPR_IMP))) {
  if (!(mfspr(SPR_SR) & SPR_SR_IME) || !(testsprbits(SPR_UPR, SPR_UPR_IMP))) {
    insn_ci = (virtaddr >= 0x80000000);
    insn_ci = (virtaddr >= 0x80000000);
    return virtaddr;
    return virtaddr;
  }
  }
 
 
  TRACE("IMMU enabled, checking mmu ways\n");
  TRACE("IMMU enabled, checking mmu ways\n");
 
 
  /* Which set to check out? */
  /* Which set to check out? */
  set = (virtaddr / config.immu.pagesize) % config.immu.nsets;
  set = (virtaddr / config.immu.pagesize) % config.immu.nsets;
  tagaddr = (virtaddr / config.immu.pagesize) / config.immu.nsets;
  tagaddr = (virtaddr / config.immu.pagesize) / config.immu.nsets;
  vpn = virtaddr / (config.immu.pagesize * config.immu.nsets);
  vpn = virtaddr / (config.immu.pagesize * config.immu.nsets);
 
 
  /* Scan all ways and try to find a matching way. */
  /* Scan all ways and try to find a matching way. */
  for (i = 0; i < config.immu.nways; i++)
  for (i = 0; i < config.immu.nways; i++)
    if (((mfspr(SPR_ITLBMR_BASE(i) + set) / (config.immu.pagesize * config.immu.nsets)) == vpn) &&
    if (((mfspr(SPR_ITLBMR_BASE(i) + set) / (config.immu.pagesize * config.immu.nsets)) == vpn) &&
        testsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_V))
        testsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_V))
      way = i;
      way = i;
 
 
  /* Did we find our tlb entry? */
  /* Did we find our tlb entry? */
  if (way >= 0) { /* Yes, we did. */
  if (way >= 0) { /* Yes, we did. */
    immu_stats.fetch_tlbhit++;
    immu_stats.fetch_tlbhit++;
    TRACE("ITLB hit (virtaddr=%"PRIxADDR").\n", virtaddr);
    TRACE("ITLB hit (virtaddr=%"PRIxADDR").\n", virtaddr);
 
 
    /* Set LRUs */
    /* Set LRUs */
    for (i = 0; i < config.immu.nways; i++)
    for (i = 0; i < config.immu.nways; i++)
      if (testsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_LRU))
      if (testsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_LRU))
        setsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_LRU, getsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_LRU) - 1);
        setsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_LRU, getsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_LRU) - 1);
    setsprbits(SPR_ITLBMR_BASE(way) + set, SPR_ITLBMR_LRU, config.immu.nsets - 1);
    setsprbits(SPR_ITLBMR_BASE(way) + set, SPR_ITLBMR_LRU, config.immu.nsets - 1);
 
 
    /* Check if page is cache inhibited */
    /* Check if page is cache inhibited */
    insn_ci = (mfspr(SPR_ITLBTR_BASE(way) + set) & SPR_ITLBTR_CI) == SPR_ITLBTR_CI;
    insn_ci = (mfspr(SPR_ITLBTR_BASE(way) + set) & SPR_ITLBTR_CI) == SPR_ITLBTR_CI;
 
 
    runtime.sim.mem_cycles += config.immu.hitdelay;
    runtime.sim.mem_cycles += config.immu.hitdelay;
 
 
    /* Test for page fault */
    /* Test for page fault */
    if (mfspr (SPR_SR) & SPR_SR_SM) {
    if (mfspr (SPR_SR) & SPR_SR_SM) {
      if (!(mfspr (SPR_ITLBTR_BASE(way) + set) & SPR_ITLBTR_SXE))
      if (!(mfspr (SPR_ITLBTR_BASE(way) + set) & SPR_ITLBTR_SXE))
        except_handle(EXCEPT_IPF, virtaddr);
        except_handle(EXCEPT_IPF, virtaddr);
    } else {
    } else {
      if (!(mfspr (SPR_ITLBTR_BASE(way) + set) & SPR_ITLBTR_UXE))
      if (!(mfspr (SPR_ITLBTR_BASE(way) + set) & SPR_ITLBTR_UXE))
        except_handle(EXCEPT_IPF, virtaddr);
        except_handle(EXCEPT_IPF, virtaddr);
    }
    }
 
 
    ppn = mfspr(SPR_ITLBTR_BASE(way) + set) / config.immu.pagesize;
    ppn = mfspr(SPR_ITLBTR_BASE(way) + set) / config.immu.pagesize;
    return (ppn * config.immu.pagesize) + (virtaddr % config.immu.pagesize);
    return (ppn * config.immu.pagesize) + (virtaddr % config.immu.pagesize);
  }
  }
  else {  /* No, we didn't. */
  else {  /* No, we didn't. */
    immu_stats.fetch_tlbmiss++;
    immu_stats.fetch_tlbmiss++;
#if 0
#if 0
    for (i = 0; i < config.immu.nways; i++)
    for (i = 0; i < config.immu.nways; i++)
      if (getsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_LRU) < minlru)
      if (getsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_LRU) < minlru)
        minway = i;
        minway = i;
 
 
    setsprbits(SPR_ITLBMR_BASE(minway) + set, SPR_ITLBMR_VPN, vpn);
    setsprbits(SPR_ITLBMR_BASE(minway) + set, SPR_ITLBMR_VPN, vpn);
    for (i = 0; i < config.immu.nways; i++)
    for (i = 0; i < config.immu.nways; i++)
      if (testsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_LRU))
      if (testsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_LRU))
        setsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_LRU, getsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_LRU) - 1);
        setsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_LRU, getsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_LRU) - 1);
    setsprbits(SPR_ITLBMR_BASE(minway) + set, SPR_ITLBMR_LRU, config.immu.ustates - 1);
    setsprbits(SPR_ITLBMR_BASE(minway) + set, SPR_ITLBMR_LRU, config.immu.ustates - 1);
    setsprbits(SPR_ITLBTR_BASE(minway) + set, SPR_ITLBTR_PPN, vpn); /* 1 to 1 */
    setsprbits(SPR_ITLBTR_BASE(minway) + set, SPR_ITLBTR_PPN, vpn); /* 1 to 1 */
    setsprbits(SPR_ITLBMR_BASE(minway) + set, SPR_ITLBMR_V, 1);
    setsprbits(SPR_ITLBMR_BASE(minway) + set, SPR_ITLBMR_V, 1);
#endif
#endif
 
 
    /* if tlb refill implemented in HW */
    /* if tlb refill implemented in HW */
    /* return getsprbits(SPR_ITLBTR_BASE(minway) + set, SPR_ITLBTR_PPN) * config.immu.pagesize + (virtaddr % config.immu.pagesize); */
    /* return getsprbits(SPR_ITLBTR_BASE(minway) + set, SPR_ITLBTR_PPN) * config.immu.pagesize + (virtaddr % config.immu.pagesize); */
    runtime.sim.mem_cycles += config.immu.missdelay;
    runtime.sim.mem_cycles += config.immu.missdelay;
 
 
    except_handle(EXCEPT_ITLBMISS, virtaddr);
    except_handle(EXCEPT_ITLBMISS, virtaddr);
    return 0;
    return 0;
  }
  }
}
}
 
 
/* DESC: try to find EA -> PA transaltion without changing
/* DESC: try to find EA -> PA transaltion without changing
 *       any of precessor states. if this is not passible gives up
 *       any of precessor states. if this is not passible gives up
 *       (without triggering exceptions).
 *       (without triggering exceptions).
 *
 *
 * PRMS: virtaddr  - EA for which to find translation
 * PRMS: virtaddr  - EA for which to find translation
 *
 *
 * RTRN: 0         - no IMMU, IMMU disabled or ITLB miss
 * RTRN: 0         - no IMMU, IMMU disabled or ITLB miss
 *       else      - appropriate PA (note it IMMU is not present
 *       else      - appropriate PA (note it IMMU is not present
 *                   PA === EA)
 *                   PA === EA)
 */
 */
oraddr_t peek_into_itlb(oraddr_t virtaddr)
oraddr_t peek_into_itlb(oraddr_t virtaddr)
{
{
  int set, way = -1;
  int set, way = -1;
  int i;
  int i;
  oraddr_t tagaddr;
  oraddr_t tagaddr;
  oraddr_t vpn, ppn;
  oraddr_t vpn, ppn;
 
 
  if (!(mfspr(SPR_SR) & SPR_SR_IME) || !(testsprbits(SPR_UPR, SPR_UPR_IMP))) {
  if (!(mfspr(SPR_SR) & SPR_SR_IME) || !(testsprbits(SPR_UPR, SPR_UPR_IMP))) {
     return(virtaddr);
     return(virtaddr);
  }
  }
 
 
  /* Which set to check out? */
  /* Which set to check out? */
  set = (virtaddr / config.immu.pagesize) % config.immu.nsets;
  set = (virtaddr / config.immu.pagesize) % config.immu.nsets;
  tagaddr = (virtaddr / config.immu.pagesize) / config.immu.nsets;
  tagaddr = (virtaddr / config.immu.pagesize) / config.immu.nsets;
  vpn = virtaddr / (config.immu.pagesize * config.immu.nsets);
  vpn = virtaddr / (config.immu.pagesize * config.immu.nsets);
 
 
  /* Scan all ways and try to find a matching way. */
  /* Scan all ways and try to find a matching way. */
  for (i = 0; i < config.immu.nways; i++)
  for (i = 0; i < config.immu.nways; i++)
    if (((mfspr(SPR_ITLBMR_BASE(i) + set) / (config.immu.pagesize * config.immu.nsets)) == vpn) &&
    if (((mfspr(SPR_ITLBMR_BASE(i) + set) / (config.immu.pagesize * config.immu.nsets)) == vpn) &&
        testsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_V))
        testsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_V))
      way = i;
      way = i;
 
 
  /* Did we find our tlb entry? */
  /* Did we find our tlb entry? */
  if (way >= 0) { /* Yes, we did. */
  if (way >= 0) { /* Yes, we did. */
 
 
    /* Test for page fault */
    /* Test for page fault */
    if (mfspr (SPR_SR) & SPR_SR_SM) {
    if (mfspr (SPR_SR) & SPR_SR_SM) {
      if (!(mfspr (SPR_ITLBTR_BASE(way) + set) & SPR_ITLBTR_SXE)) {
      if (!(mfspr (SPR_ITLBTR_BASE(way) + set) & SPR_ITLBTR_SXE)) {
        /* no luck, giving up */
        /* no luck, giving up */
        return(0);
        return(0);
      }
      }
    } else {
    } else {
      if (!(mfspr (SPR_ITLBTR_BASE(way) + set) & SPR_ITLBTR_UXE)) {
      if (!(mfspr (SPR_ITLBTR_BASE(way) + set) & SPR_ITLBTR_UXE)) {
        /* no luck, giving up */
        /* no luck, giving up */
        return(0);
        return(0);
      }
      }
    }
    }
 
 
    ppn = mfspr(SPR_ITLBTR_BASE(way) + set) / config.immu.pagesize;
    ppn = mfspr(SPR_ITLBTR_BASE(way) + set) / config.immu.pagesize;
    return (ppn * config.immu.pagesize) + (virtaddr % config.immu.pagesize);
    return (ppn * config.immu.pagesize) + (virtaddr % config.immu.pagesize);
  }
  }
  else {
  else {
    return(0);
    return(0);
  }
  }
 
 
  ERR("should never have happened\n");
  ERR("should never have happened\n");
  return(0);
  return(0);
}
}
 
 
 
 
oraddr_t immu_translate(oraddr_t virtaddr)
oraddr_t immu_translate(oraddr_t virtaddr)
{
{
  oraddr_t phyaddr = immu_simulate_tlb(virtaddr);
  oraddr_t phyaddr = immu_simulate_tlb(virtaddr);
 
 
/*  PRINTF("IMMU translate(%x) = %x\n", virtaddr, phyaddr);*/
/*  PRINTF("IMMU translate(%x) = %x\n", virtaddr, phyaddr);*/
  return phyaddr;
  return phyaddr;
}
}
 
 
void itlb_info()
void itlb_info()
{
{
  if (!testsprbits(SPR_UPR, SPR_UPR_IMP)) {
  if (!testsprbits(SPR_UPR, SPR_UPR_IMP)) {
    PRINTF("IMMU not implemented. Set UPR[IMP].\n");
    PRINTF("IMMU not implemented. Set UPR[IMP].\n");
    return;
    return;
  }
  }
 
 
  PRINTF("Insn MMU %dKB: ", config.immu.nsets * config.immu.entrysize * config.immu.nways / 1024);
  PRINTF("Insn MMU %dKB: ", config.immu.nsets * config.immu.entrysize * config.immu.nways / 1024);
  PRINTF("%d ways, %d sets, entry size %d bytes\n", config.immu.nways, config.immu.nsets, config.immu.entrysize);
  PRINTF("%d ways, %d sets, entry size %d bytes\n", config.immu.nways, config.immu.nsets, config.immu.entrysize);
}
}
 
 
/* First check if virtual address is covered by ITLB and if it is:
/* First check if virtual address is covered by ITLB and if it is:
    - increment ITLB read hit stats,
    - increment ITLB read hit stats,
    - set 'lru' at this way to config.immu.ustates - 1 and
    - set 'lru' at this way to config.immu.ustates - 1 and
      decrement 'lru' of other ways unless they have reached 0,
      decrement 'lru' of other ways unless they have reached 0,
    - check page access attributes and invoke IMMU page fault exception
    - check page access attributes and invoke IMMU page fault exception
      handler if necessary
      handler if necessary
   and if not:
   and if not:
    - increment ITLB read miss stats
    - increment ITLB read miss stats
    - find lru way and entry and invoke ITLB miss exception handler
    - find lru way and entry and invoke ITLB miss exception handler
    - set 'lru' with config.immu.ustates - 1 and decrement 'lru' of other
    - set 'lru' with config.immu.ustates - 1 and decrement 'lru' of other
      ways unless they have reached 0
      ways unless they have reached 0
*/
*/
 
 
void itlb_status(int start_set)
void itlb_status(int start_set)
{
{
  int set;
  int set;
  int way;
  int way;
  int end_set = config.immu.nsets;
  int end_set = config.immu.nsets;
 
 
  if (!testsprbits(SPR_UPR, SPR_UPR_IMP)) {
  if (!testsprbits(SPR_UPR, SPR_UPR_IMP)) {
    PRINTF("IMMU not implemented. Set UPR[IMP].\n");
    PRINTF("IMMU not implemented. Set UPR[IMP].\n");
    return;
    return;
  }
  }
 
 
  if ((start_set >= 0) && (start_set < end_set))
  if ((start_set >= 0) && (start_set < end_set))
    end_set = start_set + 1;
    end_set = start_set + 1;
  else
  else
    start_set = 0;
    start_set = 0;
 
 
  if (start_set < end_set) PRINTF("\nIMMU: ");
  if (start_set < end_set) PRINTF("\nIMMU: ");
  /* Scan set(s) and way(s). */
  /* Scan set(s) and way(s). */
  for (set = start_set; set < end_set; set++) {
  for (set = start_set; set < end_set; set++) {
    PRINTF("\nSet %x: ", set);
    PRINTF("\nSet %x: ", set);
    for (way = 0; way < config.immu.nways; way++) {
    for (way = 0; way < config.immu.nways; way++) {
      PRINTF("  way %d: ", way);
      PRINTF("  way %d: ", way);
      PRINTF("vpn=%lx ", getsprbits(SPR_ITLBMR_BASE(way) + set, SPR_ITLBMR_VPN));
      PRINTF("vpn=%lx ", getsprbits(SPR_ITLBMR_BASE(way) + set, SPR_ITLBMR_VPN));
      PRINTF("lru=%lx ", getsprbits(SPR_ITLBMR_BASE(way) + set, SPR_ITLBMR_LRU));
      PRINTF("lru=%lx ", getsprbits(SPR_ITLBMR_BASE(way) + set, SPR_ITLBMR_LRU));
      PRINTF("pl1=%lx ", getsprbits(SPR_ITLBMR_BASE(way) + set, SPR_ITLBMR_PL1));
      PRINTF("pl1=%lx ", getsprbits(SPR_ITLBMR_BASE(way) + set, SPR_ITLBMR_PL1));
      PRINTF("v=%lx ", getsprbits(SPR_ITLBMR_BASE(way) + set, SPR_ITLBMR_V));
      PRINTF("v=%lx ", getsprbits(SPR_ITLBMR_BASE(way) + set, SPR_ITLBMR_V));
 
 
      PRINTF("a=%lx ", getsprbits(SPR_ITLBTR_BASE(way) + set, SPR_ITLBTR_A));
      PRINTF("a=%lx ", getsprbits(SPR_ITLBTR_BASE(way) + set, SPR_ITLBTR_A));
      PRINTF("d=%lx ", getsprbits(SPR_ITLBTR_BASE(way) + set, SPR_ITLBTR_D));
      PRINTF("d=%lx ", getsprbits(SPR_ITLBTR_BASE(way) + set, SPR_ITLBTR_D));
      PRINTF("uxe=%lx ", getsprbits(SPR_ITLBTR_BASE(way) + set, SPR_ITLBTR_UXE));
      PRINTF("uxe=%lx ", getsprbits(SPR_ITLBTR_BASE(way) + set, SPR_ITLBTR_UXE));
      PRINTF("sxe=%lx ", getsprbits(SPR_ITLBTR_BASE(way) + set, SPR_ITLBTR_SXE));
      PRINTF("sxe=%lx ", getsprbits(SPR_ITLBTR_BASE(way) + set, SPR_ITLBTR_SXE));
      PRINTF("ppn=%lx ", getsprbits(SPR_ITLBTR_BASE(way) + set, SPR_ITLBTR_PPN));
      PRINTF("ppn=%lx ", getsprbits(SPR_ITLBTR_BASE(way) + set, SPR_ITLBTR_PPN));
    }
    }
  }
  }
  if (start_set < end_set) PRINTF("\n");
  if (start_set < end_set) PRINTF("\n");
}
}
 
 
/*---------------------------------------------------[ IMMU configuration ]---*/
/*---------------------------------------------------[ IMMU configuration ]---*/
void immu_enabled(union param_val val, void *dat)
void immu_enabled(union param_val val, void *dat)
{
{
  setsprbits (SPR_UPR, SPR_UPR_IMP, val.int_val ? 1 : 0);
  setsprbits (SPR_UPR, SPR_UPR_IMP, val.int_val ? 1 : 0);
  config.immu.enabled = val.int_val;
  config.immu.enabled = val.int_val;
}
}
 
 
void immu_nsets(union param_val val, void *dat)
void immu_nsets(union param_val val, void *dat)
{
{
  if (is_power2(val.int_val) && val.int_val <= 256) {
  if (is_power2(val.int_val) && val.int_val <= 256) {
    config.immu.nsets = val.int_val;
    config.immu.nsets = val.int_val;
    setsprbits (SPR_IMMUCFGR, SPR_IMMUCFGR_NTS, log2(val.int_val));
    setsprbits (SPR_IMMUCFGR, SPR_IMMUCFGR_NTS, log2(val.int_val));
  }
  }
  else
  else
    CONFIG_ERROR("value of power of two and lower or equal than 256 expected.");
    CONFIG_ERROR("value of power of two and lower or equal than 256 expected.");
}
}
 
 
void immu_nways(union param_val val, void *dat)
void immu_nways(union param_val val, void *dat)
{
{
  if (val.int_val >= 1 && val.int_val <= 4) {
  if (val.int_val >= 1 && val.int_val <= 4) {
    config.immu.nways = val.int_val;
    config.immu.nways = val.int_val;
    setsprbits (SPR_DMMUCFGR, SPR_DMMUCFGR_NTW, val.int_val-1);
    setsprbits (SPR_DMMUCFGR, SPR_DMMUCFGR_NTW, val.int_val-1);
  }
  }
  else
  else
    CONFIG_ERROR("value 1, 2, 3 or 4 expected.");
    CONFIG_ERROR("value 1, 2, 3 or 4 expected.");
}
}
 
 
void immu_pagesize(union param_val val, void *dat)
void immu_pagesize(union param_val val, void *dat)
{
{
  if (is_power2(val.int_val))
  if (is_power2(val.int_val))
    config.immu.pagesize = val.int_val;
    config.immu.pagesize = val.int_val;
  else
  else
    CONFIG_ERROR("value of power of two expected.");
    CONFIG_ERROR("value of power of two expected.");
}
}
 
 
void immu_entrysize(union param_val val, void *dat)
void immu_entrysize(union param_val val, void *dat)
{
{
  if (is_power2(val.int_val))
  if (is_power2(val.int_val))
    config.immu.entrysize = val.int_val;
    config.immu.entrysize = val.int_val;
  else
  else
    CONFIG_ERROR("value of power of two expected.");
    CONFIG_ERROR("value of power of two expected.");
}
}
 
 
void immu_ustates(union param_val val, void *dat)
void immu_ustates(union param_val val, void *dat)
{
{
  if (val.int_val >= 2 && val.int_val <= 4)
  if (val.int_val >= 2 && val.int_val <= 4)
    config.immu.ustates = val.int_val;
    config.immu.ustates = val.int_val;
  else
  else
    CONFIG_ERROR("invalid USTATE.");
    CONFIG_ERROR("invalid USTATE.");
}
}
 
 
void immu_missdelay(union param_val val, void *dat)
void immu_missdelay(union param_val val, void *dat)
{
{
  config.immu.missdelay = val.int_val;
  config.immu.missdelay = val.int_val;
}
}
 
 
void immu_hitdelay(union param_val val, void *dat)
void immu_hitdelay(union param_val val, void *dat)
{
{
  config.immu.hitdelay = val.int_val;
  config.immu.hitdelay = val.int_val;
}
}
 
 
void reg_immu_sec(void)
void reg_immu_sec(void)
{
{
  struct config_section *sec = reg_config_sec("immu", NULL, NULL);
  struct config_section *sec = reg_config_sec("immu", NULL, NULL);
 
 
  reg_config_param(sec, "enabled", paramt_int, immu_enabled);
  reg_config_param(sec, "enabled", paramt_int, immu_enabled);
  reg_config_param(sec, "nsets", paramt_int, immu_nsets);
  reg_config_param(sec, "nsets", paramt_int, immu_nsets);
  reg_config_param(sec, "nways", paramt_int, immu_nways);
  reg_config_param(sec, "nways", paramt_int, immu_nways);
  reg_config_param(sec, "pagesize", paramt_int, immu_pagesize);
  reg_config_param(sec, "pagesize", paramt_int, immu_pagesize);
  reg_config_param(sec, "entrysize", paramt_int, immu_entrysize);
  reg_config_param(sec, "entrysize", paramt_int, immu_entrysize);
  reg_config_param(sec, "ustates", paramt_int, immu_ustates);
  reg_config_param(sec, "ustates", paramt_int, immu_ustates);
  reg_config_param(sec, "missdelay", paramt_int, immu_missdelay);
  reg_config_param(sec, "missdelay", paramt_int, immu_missdelay);
  reg_config_param(sec, "hitdelay", paramt_int, immu_hitdelay);
  reg_config_param(sec, "hitdelay", paramt_int, immu_hitdelay);
}
}
 
 

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