From: Daniel Benusovich <flyingmonkeys1996@gmail.com>
Date: Wed, 13 Mar 2019 05:10:24 +0000 (-0700)
Subject: Delete CacheWalker
X-Git-Tag: div_pipeline~2301
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=13b5d8700c2035792485a7f7758c3defd81c8f81;p=soc.git

Delete CacheWalker
---

diff --git a/TLB/src/CacheWalker.py b/TLB/src/CacheWalker.py
deleted file mode 100644
index d0d33980..00000000
--- a/TLB/src/CacheWalker.py
+++ /dev/null
@@ -1,45 +0,0 @@
-from nmigen import Memory, Module, Signal
-from nmigen.cli import main
-from math import log
-
-class CacheWalker():
-    """ The purpose of this module is to search a memory block given an
-        associativity.  This module will attempt to find a matching
-        entry when given an address, and perform permission validation
-        if successful.
-    """
-    def __init__(self, data_size, assoc, mem):
-        """ Arguments:
-            * data_size: (bit count) The size of the data words being processed
-            * assoc: (int) The associativity of the memory to be parsed
-            * mem: (nmigen.Memory) The memory to be parsed
-
-            Return:
-            1. An entry was found -> Return PTE, set hit HIGH, set valid HIGH
-            2. An entry was NOT found -> set hit LOW, set valid HIGH
-            3. A permission fault occurs -> set hit LOW, set valid LOW
-        """
-        # Parameter parsing
-        self.assoc = assoc # Assciativity of the cache
-
-        self.read_port = mem.read_port
-        self.write_port = mem.write_port
-
-        if (mem_size % assoc != 0):
-            print("Cache Walker: Memory cannot be distributed between sets")
-
-        self.set_count = mem.depth / assoc # Number of sets in memory
-        self.set_bit_count = log(set_count, 2) # Bit count for sets
-        # Ensure set_bit_count is fully represented
-        if(set_count % 2 != 0):
-            set_bit_count += 1
-
-        self.assoc_bits = Signal(set_bit_count) # Bits for associativity
-
-        # Inputs
-        self.vma = Signal(36) # Virtual Memory Address (VMA)
-
-        # Output
-        self.hit = Signal(1) # Denotes if the VMA had a mapped PTE
-        self.pte = Signal(64) # PTE that was mapped to by the VMA
-        self.valid = Signal(1) # Denotes if the permissions are correct