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mmuconfig.vhd
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------------------------------------------------------------------------------
-- This file is a part of the GRLIB VHDL IP LIBRARY
-- Copyright (C) 2003 - 2008, Gaisler Research
-- Copyright (C) 2008 - 2010, Aeroflex Gaisler
--
-- 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
-- the Free Software Foundation; either version 2 of the License, or
-- (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-----------------------------------------------------------------------------
-- Package: mmuconfig
-- File: mmuconfig.vhd
-- Author: Konrad Eisele, Jiri Gaisler, Gaisler Research
-- Description: MMU types and constants
------------------------------------------------------------------------------
library ieee;
use ieee.std_logic_1164.all;
library grlib;
use grlib.stdlib.all;
library gaisler;
package mmuconfig is
constant M_CTX_SZ : integer := 8;
constant M_ENT_MAX : integer := 64;
constant XM_ENT_MAX_LOG : integer := log2(M_ENT_MAX);
constant M_ENT_MAX_LOG : integer := XM_ENT_MAX_LOG;
type mmu_idcache is (id_icache, id_dcache);
-- ##############################################################
-- 1.0 virtual address [sparc V8: p.243,Appx.H,Figure H-4]
-- +--------+--------+--------+---------------+
-- a) | INDEX1 | INDEX2 | INDEX3 | OFFSET |
-- +--------+--------+--------+---------------+
-- 31 24 23 18 17 12 11 0
constant VA_I1_SZ : integer := 8;
constant VA_I2_SZ : integer := 6;
constant VA_I3_SZ : integer := 6;
constant VA_I_SZ : integer := VA_I1_SZ+VA_I2_SZ+VA_I3_SZ;
constant VA_I_MAX : integer := 8;
constant VA_I1_U : integer := 31;
constant VA_I1_D : integer := 32-VA_I1_SZ;
constant VA_I2_U : integer := 31-VA_I1_SZ;
constant VA_I2_D : integer := 32-VA_I1_SZ-VA_I2_SZ;
constant VA_I3_U : integer := 31-VA_I1_SZ-VA_I2_SZ;
constant VA_I3_D : integer := 32-VA_I_SZ;
constant VA_I_U : integer := 31;
constant VA_I_D : integer := 32-VA_I_SZ;
constant VA_OFF_U : integer := 31-VA_I_SZ;
constant VA_OFF_D : integer := 0;
constant VA_OFFCTX_U : integer := 31;
constant VA_OFFCTX_D : integer := 0;
constant VA_OFFREG_U : integer := 31-VA_I1_SZ;
constant VA_OFFREG_D : integer := 0;
constant VA_OFFSEG_U : integer := 31-VA_I1_SZ-VA_I2_SZ;
constant VA_OFFSEG_D : integer := 0;
constant VA_OFFPAG_U : integer := 31-VA_I_SZ;
constant VA_OFFPAG_D : integer := 0;
-- 8k pages
-- 7 6 6 13
-- +--------+--------+--------+---------------+
-- a) | INDEX1 | INDEX2 | INDEX3 | OFFSET |
-- +--------+--------+--------+---------------+
-- 31 25 24 19 18 13 12 0
constant P8K_VA_I1_SZ : integer := 7;
constant P8K_VA_I2_SZ : integer := 6;
constant P8K_VA_I3_SZ : integer := 6;
constant P8K_VA_I_SZ : integer := P8K_VA_I1_SZ+P8K_VA_I2_SZ+P8K_VA_I3_SZ;
constant P8K_VA_I_MAX : integer := 7;
constant P8K_VA_I1_U : integer := 31;
constant P8K_VA_I1_D : integer := 32-P8K_VA_I1_SZ;
constant P8K_VA_I2_U : integer := 31-P8K_VA_I1_SZ;
constant P8K_VA_I2_D : integer := 32-P8K_VA_I1_SZ-P8K_VA_I2_SZ;
constant P8K_VA_I3_U : integer := 31-P8K_VA_I1_SZ-P8K_VA_I2_SZ;
constant P8K_VA_I3_D : integer := 32-P8K_VA_I_SZ;
constant P8K_VA_I_U : integer := 31;
constant P8K_VA_I_D : integer := 32-P8K_VA_I_SZ;
constant P8K_VA_OFF_U : integer := 31-P8K_VA_I_SZ;
constant P8K_VA_OFF_D : integer := 0;
constant P8K_VA_OFFCTX_U : integer := 31;
constant P8K_VA_OFFCTX_D : integer := 0;
constant P8K_VA_OFFREG_U : integer := 31-P8K_VA_I1_SZ;
constant P8K_VA_OFFREG_D : integer := 0;
constant P8K_VA_OFFSEG_U : integer := 31-P8K_VA_I1_SZ-P8K_VA_I2_SZ;
constant P8K_VA_OFFSEG_D : integer := 0;
constant P8K_VA_OFFPAG_U : integer := 31-P8K_VA_I_SZ;
constant P8K_VA_OFFPAG_D : integer := 0;
-- 16k pages
-- 6 6 6 14
-- +--------+--------+--------+---------------+
-- a) | INDEX1 | INDEX2 | INDEX3 | OFFSET |
-- +--------+--------+--------+---------------+
-- 31 26 25 20 19 14 13 0
constant P16K_VA_I1_SZ : integer := 6;
constant P16K_VA_I2_SZ : integer := 6;
constant P16K_VA_I3_SZ : integer := 6;
constant P16K_VA_I_SZ : integer := P16K_VA_I1_SZ+P16K_VA_I2_SZ+P16K_VA_I3_SZ;
constant P16K_VA_I_MAX : integer := 6;
constant P16K_VA_I1_U : integer := 31;
constant P16K_VA_I1_D : integer := 32-P16K_VA_I1_SZ;
constant P16K_VA_I2_U : integer := 31-P16K_VA_I1_SZ;
constant P16K_VA_I2_D : integer := 32-P16K_VA_I1_SZ-P16K_VA_I2_SZ;
constant P16K_VA_I3_U : integer := 31-P16K_VA_I1_SZ-P16K_VA_I2_SZ;
constant P16K_VA_I3_D : integer := 32-P16K_VA_I_SZ;
constant P16K_VA_I_U : integer := 31;
constant P16K_VA_I_D : integer := 32-P16K_VA_I_SZ;
constant P16K_VA_OFF_U : integer := 31-P16K_VA_I_SZ;
constant P16K_VA_OFF_D : integer := 0;
constant P16K_VA_OFFCTX_U : integer := 31;
constant P16K_VA_OFFCTX_D : integer := 0;
constant P16K_VA_OFFREG_U : integer := 31-P16K_VA_I1_SZ;
constant P16K_VA_OFFREG_D : integer := 0;
constant P16K_VA_OFFSEG_U : integer := 31-P16K_VA_I1_SZ-P16K_VA_I2_SZ;
constant P16K_VA_OFFSEG_D : integer := 0;
constant P16K_VA_OFFPAG_U : integer := 31-P16K_VA_I_SZ;
constant P16K_VA_OFFPAG_D : integer := 0;
-- 32k pages
-- 4 7 6 15
-- +--------+--------+--------+---------------+
-- a) | INDEX1 | INDEX2 | INDEX3 | OFFSET |
-- +--------+--------+--------+---------------+
-- 31 28 27 21 20 15 14 0
constant P32K_VA_I1_SZ : integer := 4;
constant P32K_VA_I2_SZ : integer := 7;
constant P32K_VA_I3_SZ : integer := 6;
constant P32K_VA_I_SZ : integer := P32K_VA_I1_SZ+P32K_VA_I2_SZ+P32K_VA_I3_SZ;
constant P32K_VA_I_MAX : integer := 7;
constant P32K_VA_I1_U : integer := 31;
constant P32K_VA_I1_D : integer := 32-P32K_VA_I1_SZ;
constant P32K_VA_I2_U : integer := 31-P32K_VA_I1_SZ;
constant P32K_VA_I2_D : integer := 32-P32K_VA_I1_SZ-P32K_VA_I2_SZ;
constant P32K_VA_I3_U : integer := 31-P32K_VA_I1_SZ-P32K_VA_I2_SZ;
constant P32K_VA_I3_D : integer := 32-P32K_VA_I_SZ;
constant P32K_VA_I_U : integer := 31;
constant P32K_VA_I_D : integer := 32-P32K_VA_I_SZ;
constant P32K_VA_OFF_U : integer := 31-P32K_VA_I_SZ;
constant P32K_VA_OFF_D : integer := 0;
constant P32K_VA_OFFCTX_U : integer := 31;
constant P32K_VA_OFFCTX_D : integer := 0;
constant P32K_VA_OFFREG_U : integer := 31-P32K_VA_I1_SZ;
constant P32K_VA_OFFREG_D : integer := 0;
constant P32K_VA_OFFSEG_U : integer := 31-P32K_VA_I1_SZ-P32K_VA_I2_SZ;
constant P32K_VA_OFFSEG_D : integer := 0;
constant P32K_VA_OFFPAG_U : integer := 31-P32K_VA_I_SZ;
constant P32K_VA_OFFPAG_D : integer := 0;
-- ##############################################################
-- 2.0 PAGE TABE DESCRIPTOR (PTD) [sparc V8: p.247,Appx.H,Figure H-7]
--
-- +-------------------------------------------------+---+---+
-- | Page Table Pointer (PTP) | 0 | 0 |
-- +-------------------------------------------------+---+---+
-- 31 2 1 0
--
-- 2.1 PAGE TABE ENTRY (PTE) [sparc V8: p.247,Appx.H,Figure H-8]
--
-- +-----------------------------+---+---+---+-----------+---+
-- |Physical Page Number (PPN) | C | M | R | ACC | ET�
-- +-----------------------------+---+---+---+-----------+---+
-- 31 8 7 6 5 4 2 1 0
--
constant PTD_PTP_U : integer := 31; -- PTD: page table pointer
constant PTD_PTP_D : integer := 2;
constant PTD_PTP32_U : integer := 27; -- PTD: page table pointer 32 bit
constant PTD_PTP32_D : integer := 2;
constant PTE_PPN_U : integer := 31; -- PTE: physical page number
constant PTE_PPN_D : integer := 8;
constant PTE_PPN_S : integer := (PTE_PPN_U+1)-PTE_PPN_D; -- PTE: pysical page number size
constant PTE_PPN32_U : integer := 27; -- PTE: physical page number 32 bit addr
constant PTE_PPN32_D : integer := 8;
constant PTE_PPN32_S : integer := (PTE_PPN32_U+1)-PTE_PPN32_D; -- PTE: pysical page number 32 bit size
constant PTE_PPN32REG_U : integer := PTE_PPN32_U; -- PTE: pte part of merged result address
constant PTE_PPN32REG_D : integer := PTE_PPN32_U+1-VA_I1_SZ;
constant PTE_PPN32SEG_U : integer := PTE_PPN32_U;
constant PTE_PPN32SEG_D : integer := PTE_PPN32_U+1-VA_I1_SZ-VA_I2_SZ;
constant PTE_PPN32PAG_U : integer := PTE_PPN32_U;
constant PTE_PPN32PAG_D : integer := PTE_PPN32_U+1-VA_I_SZ;
-- 8k pages
constant P8K_PTE_PPN32REG_U : integer := PTE_PPN32_U; -- PTE: pte part of merged result address
constant P8K_PTE_PPN32REG_D : integer := PTE_PPN32_U+1-P8K_VA_I1_SZ;
constant P8K_PTE_PPN32SEG_U : integer := PTE_PPN32_U;
constant P8K_PTE_PPN32SEG_D : integer := PTE_PPN32_U+1-P8K_VA_I1_SZ-P8K_VA_I2_SZ;
constant P8K_PTE_PPN32PAG_U : integer := PTE_PPN32_U;
constant P8K_PTE_PPN32PAG_D : integer := PTE_PPN32_U+1-P8K_VA_I_SZ;
-- 16k pages
constant P16K_PTE_PPN32REG_U : integer := PTE_PPN32_U; -- PTE: pte part of merged result address
constant P16K_PTE_PPN32REG_D : integer := PTE_PPN32_U+1-P16K_VA_I1_SZ;
constant P16K_PTE_PPN32SEG_U : integer := PTE_PPN32_U;
constant P16K_PTE_PPN32SEG_D : integer := PTE_PPN32_U+1-P16K_VA_I1_SZ-P16K_VA_I2_SZ;
constant P16K_PTE_PPN32PAG_U : integer := PTE_PPN32_U;
constant P16K_PTE_PPN32PAG_D : integer := PTE_PPN32_U+1-P16K_VA_I_SZ;
-- 32k pages
constant P32K_PTE_PPN32REG_U : integer := PTE_PPN32_U; -- PTE: pte part of merged result address
constant P32K_PTE_PPN32REG_D : integer := PTE_PPN32_U+1-P32K_VA_I1_SZ;
constant P32K_PTE_PPN32SEG_U : integer := PTE_PPN32_U;
constant P32K_PTE_PPN32SEG_D : integer := PTE_PPN32_U+1-P32K_VA_I1_SZ-P32K_VA_I2_SZ;
constant P32K_PTE_PPN32PAG_U : integer := PTE_PPN32_U;
constant P32K_PTE_PPN32PAG_D : integer := PTE_PPN32_U+1-P32K_VA_I_SZ;
constant PTE_C : integer := 7; -- PTE: Cacheable bit
constant PTE_M : integer := 6; -- PTE: Modified bit
constant PTE_R : integer := 5; -- PTE: Reference Bit - a "1" indicates an PTE
constant PTE_ACC_U : integer := 4; -- PTE: Access field
constant PTE_ACC_D : integer := 2;
constant ACC_W : integer := 2; -- PTE::ACC : write permission
constant ACC_E : integer := 3; -- PTE::ACC : exec permission
constant ACC_SU : integer := 4; -- PTE::ACC : privileged
constant PT_ET_U : integer := 1; -- PTD/PTE: PTE Type
constant PT_ET_D : integer := 0;
constant ET_INV : std_logic_vector(1 downto 0) := "00";
constant ET_PTD : std_logic_vector(1 downto 0) := "01";
constant ET_PTE : std_logic_vector(1 downto 0) := "10";
constant ET_RVD : std_logic_vector(1 downto 0) := "11";
constant PADDR_PTD_U : integer := 31;
constant PADDR_PTD_D : integer := 6;
-- ##############################################################
-- 3.0 TLBCAM TAG hardware representation (TTG)
--
type tlbcam_reg is record
ET : std_logic_vector(1 downto 0); -- et field
ACC : std_logic_vector(2 downto 0); -- on flush/probe this will become FPTY
M : std_logic; -- modified
R : std_logic; -- referenced
SU : std_logic; -- equal ACC >= 6
VALID : std_logic;
LVL : std_logic_vector(1 downto 0); -- level in pth
I1 : std_logic_vector(7 downto 0); -- vaddr
I2 : std_logic_vector(5 downto 0);
I3 : std_logic_vector(5 downto 0);
CTX : std_logic_vector(M_CTX_SZ-1 downto 0); -- ctx number
PPN : std_logic_vector(PTE_PPN_S-1 downto 0); -- physical page number
C : std_logic; -- cachable
end record;
constant tlbcam_reg_none : tlbcam_reg := ("00", "000", '0', '0', '0', '0',
"00", "00000000", "000000", "000000", "00000000", (others => '0'), '0');
-- tlbcam_reg::LVL
constant LVL_PAGE : std_logic_vector(1 downto 0) := "00"; -- equal tlbcam_tfp::TYP FPTY_PAGE
constant LVL_SEGMENT : std_logic_vector(1 downto 0) := "01"; -- equal tlbcam_tfp::TYP FPTY_SEGMENT
constant LVL_REGION : std_logic_vector(1 downto 0) := "10"; -- equal tlbcam_tfp::TYP FPTY_REGION
constant LVL_CTX : std_logic_vector(1 downto 0) := "11"; -- equal tlbcam_tfp::TYP FPTY_CTX
-- ##############################################################
-- 4.0 TLBCAM tag i/o for translation/flush/(probe)
--
type tlbcam_tfp is record
TYP : std_logic_vector(2 downto 0); -- f/(p) type
I1 : std_logic_vector(7 downto 0); -- vaddr
I2 : std_logic_vector(5 downto 0);
I3 : std_logic_vector(5 downto 0);
CTX : std_logic_vector(M_CTX_SZ-1 downto 0); -- ctx number
M : std_logic;
end record;
constant tlbcam_tfp_none : tlbcam_tfp := ("000", "00000000", "000000", "000000", "00000000", '0');
--tlbcam_tfp::TYP
constant FPTY_PAGE : std_logic_vector(2 downto 0) := "000"; -- level 3 PTE match I1+I2+I3
constant FPTY_SEGMENT : std_logic_vector(2 downto 0) := "001"; -- level 2/3 PTE/PTD match I1+I2
constant FPTY_REGION : std_logic_vector(2 downto 0) := "010"; -- level 1/2/3 PTE/PTD match I1
constant FPTY_CTX : std_logic_vector(2 downto 0) := "011"; -- level 0/1/2/3 PTE/PTD ctx
constant FPTY_N : std_logic_vector(2 downto 0) := "100"; -- entire tlb
-- ##############################################################
-- 5.0 MMU Control Register [sparc V8: p.253,Appx.H,Figure H-10]
--
-- +-------+-----+------------------+-----+-------+--+--+
-- | IMPL | VER | SC | PSO | resvd |NF|E |
-- +-------+-----+------------------+-----+-------+--+--+
-- 31 28 27 24 23 8 7 6 2 1 0
--
-- MMU Context Pointer [sparc V8: p.254,Appx.H,Figure H-11]
-- +-------------------------------------------+--------+
-- | Context Table Pointer | resvd |
-- +-------------------------------------------+--------+
-- 31 2 1 0
--
-- MMU Context Number [sparc V8: p.255,Appx.H,Figure H-12]
-- +----------------------------------------------------+
-- | Context Table Pointer |
-- +----------------------------------------------------+
-- 31 0
--
-- fault status/address register [sparc V8: p.256,Appx.H,Table H-13/14]
-- +------------+-----+---+----+----+-----+----+
-- | reserved | EBE | L | AT | FT | FAV | OW |
-- +------------+-----+---+----+----+-----+----+
-- 31 18 17 10 9 8 7 5 4 2 1 0
--
-- +----------------------------------------------------+
-- | fault address register |
-- +----------------------------------------------------+
-- 31 0
constant MMCTRL_CTXP_SZ : integer := 30;
constant MMCTRL_PTP32_U : integer := 25;
constant MMCTRL_PTP32_D : integer := 0;
constant MMCTRL_E : integer := 0;
constant MMCTRL_NF : integer := 1;
constant MMCTRL_PSO : integer := 7;
constant MMCTRL_SC_U : integer := 23;
constant MMCTRL_SC_D : integer := 8;
constant MMCTRL_PGSZ_U : integer := 17;
constant MMCTRL_PGSZ_D : integer := 16;
constant MMCTRL_VER_U : integer := 27;
constant MMCTRL_VER_D : integer := 24;
constant MMCTRL_IMPL_U : integer := 31;
constant MMCTRL_IMPL_D : integer := 28;
constant MMCTRL_TLBDIS : integer := 15;
constant MMCTRL_TLBSEP : integer := 14;
constant MMCTXP_U : integer := 31;
constant MMCTXP_D : integer := 2;
constant MMCTXNR_U : integer := M_CTX_SZ-1;
constant MMCTXNR_D : integer := 0;
constant FS_SZ : integer := 18; -- fault status size
constant FS_EBE_U : integer := 17;
constant FS_EBE_D : integer := 10;
constant FS_L_U : integer := 9;
constant FS_L_D : integer := 8;
constant FS_L_CTX : std_logic_vector(1 downto 0) := "00";
constant FS_L_L1 : std_logic_vector(1 downto 0) := "01";
constant FS_L_L2 : std_logic_vector(1 downto 0) := "10";
constant FS_L_L3 : std_logic_vector(1 downto 0) := "11";
constant FS_AT_U : integer := 7;
constant FS_AT_D : integer := 5;
constant FS_AT_LS : natural := 7; --L=0 S=1
constant FS_AT_ID : natural := 6; --D=0 I=1
constant FS_AT_SU : natural := 5; --U=0 SU=1
constant FS_AT_LUDS : std_logic_vector(2 downto 0) := "000";
constant FS_AT_LSDS : std_logic_vector(2 downto 0) := "001";
constant FS_AT_LUIS : std_logic_vector(2 downto 0) := "010";
constant FS_AT_LSIS : std_logic_vector(2 downto 0) := "011";
constant FS_AT_SUDS : std_logic_vector(2 downto 0) := "100";
constant FS_AT_SSDS : std_logic_vector(2 downto 0) := "101";
constant FS_AT_SUIS : std_logic_vector(2 downto 0) := "110";
constant FS_AT_SSIS : std_logic_vector(2 downto 0) := "111";
constant FS_FT_U : integer := 4;
constant FS_FT_D : integer := 2;
constant FS_FT_NONE : std_logic_vector(2 downto 0) := "000";
constant FS_FT_INV : std_logic_vector(2 downto 0) := "001";
constant FS_FT_PRO : std_logic_vector(2 downto 0) := "010";
constant FS_FT_PRI : std_logic_vector(2 downto 0) := "011";
constant FS_FT_TRANS : std_logic_vector(2 downto 0):= "110";
constant FS_FT_BUS : std_logic_vector(2 downto 0) := "101";
constant FS_FT_INT : std_logic_vector(2 downto 0) := "110";
constant FS_FT_RVD : std_logic_vector(2 downto 0) := "111";
constant FS_FAV : natural := 1;
constant FS_OW : natural := 0;
--# mmu ctrl reg
type mmctrl_type1 is record
e : std_logic; -- enable
nf : std_logic; -- no fault
pso : std_logic; -- partial store order
-- pre : std_logic; -- pretranslation source
-- pri : std_logic; -- i/d priority
pagesize : std_logic_vector(1 downto 0);-- page size
ctx : std_logic_vector(M_CTX_SZ-1 downto 0);-- context nr
ctxp : std_logic_vector(MMCTRL_CTXP_SZ-1 downto 0); -- context table pointer
tlbdis : std_logic; -- tlb disabled
bar : std_logic_vector(1 downto 0); -- preplace barrier
end record;
constant mmctrl_type1_none : mmctrl_type1 := ('0', '0', '0', (others => '0'), (others => '0'), (others => '0'), '0', (others => '0'));
--# fault status reg
type mmctrl_fs_type is record
ow : std_logic;
fav : std_logic;
ft : std_logic_vector(2 downto 0); -- fault type
at_ls : std_logic; -- access type, load/store
at_id : std_logic; -- access type, i/dcache
at_su : std_logic; -- access type, su/user
l : std_logic_vector(1 downto 0); -- level
ebe : std_logic_vector(7 downto 0);
end record;
constant mmctrl_fs_zero : mmctrl_fs_type :=
('0', '0', "000", '0', '0', '0', "00", "00000000");
type mmctrl_type2 is record
fs : mmctrl_fs_type;
valid : std_logic;
fa : std_logic_vector(VA_I_SZ-1 downto 0); -- fault address register
end record;
constant mmctrl2_zero : mmctrl_type2 :=
(mmctrl_fs_zero, '0', zero32(VA_I_SZ-1 downto 0));
-- ##############################################################
-- 6. Virtual Flush/Probe address [sparc V8: p.249,Appx.H,Figure H-9]
-- +---------------------------------------+--------+-------+
-- | VIRTUAL FLUSH&Probe Address (VFPA) | type | rvd |
-- +---------------------------------------+--------+-------+
-- 31 12 11 8 7 0
--
--
subtype FPA is natural range 31 downto 12;
constant FPA_I1_U : integer := 31;
constant FPA_I1_D : integer := 24;
constant FPA_I2_U : integer := 23;
constant FPA_I2_D : integer := 18;
constant FPA_I3_U : integer := 17;
constant FPA_I3_D : integer := 12;
constant FPTY_U : integer := 10; -- only 3 bits
constant FPTY_D : integer := 8;
-- ##############################################################
-- 7. control register virtual address [sparc V8: p.253,Appx.H,Table H-5]
-- +---------------------------------+-----+--------+
-- | | CNR | rsvd |
-- +---------------------------------+-----+--------+
-- 31 10 8 7 0
constant CNR_U : integer := 10;
constant CNR_D : integer := 8;
constant CNR_CTRL : std_logic_vector(2 downto 0) := "000";
constant CNR_CTXP : std_logic_vector(2 downto 0) := "001";
constant CNR_CTX : std_logic_vector(2 downto 0) := "010";
constant CNR_F : std_logic_vector(2 downto 0) := "011";
constant CNR_FADDR : std_logic_vector(2 downto 0) := "100";
-- ##############################################################
-- 8. Precise flush (ASI 0x10-14) [sparc V8: p.266,Appx.I]
-- supported: ASI_FLUSH_PAGE
-- ASI_FLUSH_CTX
constant PFLUSH_PAGE : std_logic := '0';
constant PFLUSH_CTX : std_logic := '1';
-- ##############################################################
-- 9. Diagnostic access
--
constant DIAGF_LVL_U : integer := 1;
constant DIAGF_LVL_D : integer := 0;
constant DIAGF_WR : integer := 3;
constant DIAGF_HIT : integer := 4;
constant DIAGF_CTX_U : integer := 12;
constant DIAGF_CTX_D : integer := 5;
constant DIAGF_VALID : integer := 13;
end mmuconfig;