| 1 | # -*- perl -*- |
| 2 | |
| 3 | package Midas::MMU::Niagara2; |
| 4 | use strict; |
| 5 | |
| 6 | use Midas::Command; |
| 7 | use Midas::Error; |
| 8 | use Midas::Configure; |
| 9 | use Midas::Globals; |
| 10 | use Midas::Segment; |
| 11 | |
| 12 | use TRELoad 'BitFieldTie'; |
| 13 | |
| 14 | use base qw(Midas::MMU); |
| 15 | use fields qw( |
| 16 | rasize |
| 17 | ); |
| 18 | |
| 19 | ############################################################################## |
| 20 | |
| 21 | sub new { |
| 22 | my $class = shift; |
| 23 | my %args = @_; |
| 24 | my $this = fields::new($class); |
| 25 | $this->SUPER::new(); |
| 26 | |
| 27 | foreach my $key (keys %args) { |
| 28 | $this->{$key} = $args{$key}; |
| 29 | } |
| 30 | |
| 31 | $this->set_defaults(); |
| 32 | |
| 33 | $this->{mapattr_type} = 'Midas::MMU::Niagara2::SectionAttrs'; |
| 34 | $this->{tsb_type} = 'Midas::MMU::Niagara2::TSB'; |
| 35 | |
| 36 | return $this; |
| 37 | } |
| 38 | |
| 39 | ############################################################################## |
| 40 | |
| 41 | sub set_defaults { |
| 42 | my $this = shift; |
| 43 | |
| 44 | $this->{vasize} = 64 unless defined $this->{vasize}; |
| 45 | $this->{pasize} = 40 unless defined $this->{pasize}; |
| 46 | $this->{rasize} = 40 unless defined $this->{rasize}; |
| 47 | $this->{type} = 'niagara2' unless defined $this->{type}; |
| 48 | |
| 49 | |
| 50 | $this->SUPER::set_defaults(); |
| 51 | } |
| 52 | |
| 53 | ############################################################################## |
| 54 | |
| 55 | sub mmu_cpp_args { |
| 56 | my $this = shift; |
| 57 | my $list = ['-DNIAGARA2']; |
| 58 | push @$list, '-DALLOW_TSB_COL' if $CONFIG{allow_tsb_conflicts}; |
| 59 | return $list; |
| 60 | } |
| 61 | |
| 62 | ############################################################################## |
| 63 | |
| 64 | ############################################################################## |
| 65 | ############################################################################## |
| 66 | |
| 67 | { |
| 68 | package Midas::MMU::Niagara2::SectionAttrs; |
| 69 | use strict; |
| 70 | |
| 71 | use Carp; |
| 72 | use Midas::Command; |
| 73 | use Midas::Globals; |
| 74 | use Midas::Error; |
| 75 | use Midas::MMU::SunSectionAttrs; |
| 76 | use Midas::MMU::TTEFormat; |
| 77 | use BitFieldTie; |
| 78 | |
| 79 | |
| 80 | use base qw(Midas::MMU::SunHyperAttrs); |
| 81 | use fields (qw(), |
| 82 | ( |
| 83 | # Hard-code MMU type because 'use fields' directive needs |
| 84 | # to happen at compile-time |
| 85 | keys %{ get_union_tte_field_hash('niagara2') } |
| 86 | ) |
| 87 | ); |
| 88 | |
| 89 | our @Settable = qw(); |
| 90 | |
| 91 | our %Settable = map { $_ => 1} Midas::MMU::Niagara2::SectionAttrs->settable(); |
| 92 | our %FieldSizes =( ); |
| 93 | |
| 94 | ############################################################################ |
| 95 | |
| 96 | sub new { |
| 97 | my $this = shift; |
| 98 | my %args = @_; |
| 99 | |
| 100 | unless (ref $this) { |
| 101 | $this = fields::new($this); |
| 102 | } |
| 103 | |
| 104 | $this->{settable} = \%Settable; |
| 105 | foreach my $key (keys %args) { |
| 106 | $this->{$key} = $args{$key}; |
| 107 | } |
| 108 | |
| 109 | return $this; |
| 110 | } |
| 111 | |
| 112 | ############################################################################ |
| 113 | |
| 114 | sub set_defaults { |
| 115 | my $this = shift; |
| 116 | |
| 117 | $this->SUPER::set_defaults(); |
| 118 | |
| 119 | foreach my $field (keys %FieldSizes) { |
| 120 | $this->{$field} = 0 unless defined $this->{$field}; |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | ############################################################################# |
| 125 | |
| 126 | sub settable { |
| 127 | my $this = shift; |
| 128 | my @settable = $this->SUPER::settable(); |
| 129 | push @settable, @Settable; |
| 130 | return @settable; |
| 131 | } |
| 132 | |
| 133 | ############################################################################# |
| 134 | |
| 135 | sub get_field_size_hash { |
| 136 | my $this = shift; |
| 137 | my $sizes = $this->SUPER::get_field_size_hash(); |
| 138 | |
| 139 | foreach my $field (keys %FieldSizes) { |
| 140 | $sizes->{$field} = $FieldSizes{$field}; |
| 141 | } |
| 142 | |
| 143 | return $sizes; |
| 144 | } |
| 145 | |
| 146 | ############################################################################ |
| 147 | |
| 148 | sub legal_page_bits { |
| 149 | my $this = shift; |
| 150 | return (0, 1, 3, 5); |
| 151 | } |
| 152 | |
| 153 | ########################################################################### |
| 154 | |
| 155 | } |
| 156 | |
| 157 | ############################################################################## |
| 158 | ############################################################################## |
| 159 | |
| 160 | { |
| 161 | package Midas::MMU::Niagara2::TSB; |
| 162 | |
| 163 | use Midas::Globals; |
| 164 | use Midas::Command; |
| 165 | use Midas::Error; |
| 166 | use BitFieldTie; |
| 167 | |
| 168 | use base 'Midas::TSB'; |
| 169 | use fields qw(); |
| 170 | |
| 171 | |
| 172 | |
| 173 | ############################################################################ |
| 174 | |
| 175 | sub new { |
| 176 | my $this = shift; |
| 177 | my %args = @_; |
| 178 | |
| 179 | unless (ref $this) { |
| 180 | $this = fields::new($this); |
| 181 | } |
| 182 | |
| 183 | $this->{touched} = 0; |
| 184 | $this->{force_ctx_zero} = undef; |
| 185 | $this->{page_size} = undef; |
| 186 | |
| 187 | foreach my $key (keys %args) { |
| 188 | $this->{$key} = $args{$key}; |
| 189 | } |
| 190 | |
| 191 | return $this; |
| 192 | } |
| 193 | |
| 194 | ############################################################################ |
| 195 | |
| 196 | sub config_from_register { |
| 197 | my $this = shift; |
| 198 | my $mmu = shift; |
| 199 | |
| 200 | my $config = BitFieldTie->new(64, $this->{config_register}); |
| 201 | my $base = BitFieldTie->new($PASIZE, 0); |
| 202 | |
| 203 | tie my %config, 'BitFieldTie', $config; |
| 204 | tie my %base, 'BitFieldTie', $base; |
| 205 | |
| 206 | $base{'39:13'} = $config{'39:13'}; |
| 207 | |
| 208 | $this->{base} = $base; |
| 209 | $this->{page_size} = $config{'6:4'}; |
| 210 | $this->{ttefmt} = $config{7} ? 'sun4v' : 'sun4u'; |
| 211 | $this->{sizebits} = $config{'3:0'}; |
| 212 | $this->{is_split} = 0; |
| 213 | $this->{numentries} = 512 * (1 << $this->{sizebits}); |
| 214 | |
| 215 | my $base_lo = 13 + $this->{sizebits}; |
| 216 | if($base_lo > 13) { |
| 217 | my $overlap = $base->extract($base_lo, 13); |
| 218 | |
| 219 | if($overlap) { |
| 220 | if($CONFIG{allow_misaligned_tsb_base}) { |
| 221 | $base->store($base_lo, 13, 0); |
| 222 | } else { |
| 223 | fatal "TSB '$this->{name}' has base $base, which\n". |
| 224 | " is misaligned for size=$this->{sizebits}\n" . |
| 225 | " Illegal unless -allow_misalgined_tsb_base is defined.\n" . |
| 226 | " line=$this->{srcline}, file=$this->{srcfile}\n", |
| 227 | M_TSBSYNTAX; |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | } |
| 232 | } |
| 233 | |
| 234 | ############################################################################ |
| 235 | |
| 236 | } |
| 237 | |
| 238 | ############################################################################## |
| 239 | ############################################################################## |
| 240 | |
| 241 | 1; |