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fix(xiselect): set the minimum range for xiselect (#4594) 

The miselect register implements at least enough bits to support all
implemented miselect values.
The siselect register will support the value range 0..0xFFF at a
minimum.
The vsiselect register will support the value range 0..0xFFF at a
minimum.
This commit is contained in:
NewPaulWalker 2025-04-22 03:52:44 +02:00 committed by GitHub
parent 99a48a761c
commit f9ed852fb2
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1 changed files with 8 additions and 7 deletions
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15
src/main/scala/xiangshan/backend/fu/NewCSR/CSRAIA.scala
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@ -204,11 +204,11 @@ class ISelectField(final val maxValue: Int, reserved: Seq[Range]) extends CSREnu
}
object VSISelectField extends ISelectField(
0x1FF,
0xFFF,
reserved = Seq(
Range.inclusive(0x000, 0x02F),
Range.inclusive(0x040, 0x06F),
Range.inclusive(0x100, 0x1FF),
Range.inclusive(0x100, 0xFFF),
),
)
@ -221,15 +221,16 @@ object MISelectField extends ISelectField(
)
object SISelectField extends ISelectField(
maxValue = 0xFF,
maxValue = 0xFFF,
reserved = Seq(
Range.inclusive(0x00, 0x2F),
Range.inclusive(0x40, 0x6F),
Range.inclusive(0x000, 0x02F),
Range.inclusive(0x040, 0x06F),
Range.inclusive(0x100, 0xFFF),
),
)
class VSISelectBundle extends CSRBundle {
val ALL = VSISelectField(log2Up(0x1FF), 0, null).withReset(0.U)
val ALL = VSISelectField(log2Up(0xFFF), 0, null).withReset(0.U)
}
class MISelectBundle extends CSRBundle {
@ -237,7 +238,7 @@ class MISelectBundle extends CSRBundle {
}
class SISelectBundle extends CSRBundle {
val ALL = SISelectField(log2Up(0xFF), 0, null).withReset(0.U)
val ALL = SISelectField(log2Up(0xFFF), 0, null).withReset(0.U)
}
class TopIBundle extends CSRBundle {