From: Joshua Wise <joshua@rebirth.joshuawise.com>
Date: Sat, 17 Jan 2009 11:09:41 +0000 (-0500)
Subject: DCache/ICache: Invalidate while filling, so if the fill is aborted, then at least... 
X-Git-Url: http://git.joshuawise.com/firearm.git/commitdiff_plain/ad18b18ac07db57954dc102383993fba0b6b2af4?ds=sidebyside

DCache/ICache: Invalidate while filling, so if the fill is aborted, then at least we do not return bad data later.  8 hour debug session; 1 line fix.
---

diff --git a/DCache.v b/DCache.v
index ab68448..356debc 100644
--- a/DCache.v
+++ b/DCache.v
@@ -86,7 +86,8 @@ module DCache(
 				if (cache_fill_pos == 15) begin	/* Done? */
 					cache_tags[idx] <= tag;
 					cache_valid[idx] <= 1;
-				end
+				end else
+					cache_valid[idx] <= 0;
 			end
 		end else if (wr_req && cache_hit)
 			cache_data[idx][addr[5:2]] = wr_data;
diff --git a/ICache.v b/ICache.v
index b9e4eff..e90f430 100644
--- a/ICache.v
+++ b/ICache.v
@@ -77,7 +77,9 @@ module ICache(
 				if (cache_fill_pos == 15) begin	/* Done? */
 					cache_tags[rd_idx] <= rd_tag;
 					cache_valid[rd_idx] <= 1;
-				end
+					$display("ICACHE: Fill complete for line %x, tag %x", rd_idx, rd_tag);
+				end else
+					cache_valid[rd_idx] <= 0;
 			end
 		end
 	end