sh: More intelligent entry_mask/way_size calculation.
Figure out the cache desc entry_mask at runtime, and remove
hard-coded assumption about the cacheline size.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/kernel/cpu/sh4/probe.c b/arch/sh/kernel/cpu/sh4/probe.c
index bee00ca..c294de1 100644
--- a/arch/sh/kernel/cpu/sh4/probe.c
+++ b/arch/sh/kernel/cpu/sh4/probe.c
@@ -38,7 +38,6 @@
*/
cpu_data->icache.way_incr = (1 << 13);
cpu_data->icache.entry_shift = 5;
- cpu_data->icache.entry_mask = 0x1fe0;
cpu_data->icache.sets = 256;
cpu_data->icache.ways = 1;
cpu_data->icache.linesz = L1_CACHE_BYTES;
@@ -48,7 +47,6 @@
*/
cpu_data->dcache.way_incr = (1 << 14);
cpu_data->dcache.entry_shift = 5;
- cpu_data->dcache.entry_mask = 0x3fe0;
cpu_data->dcache.sets = 512;
cpu_data->dcache.ways = 1;
cpu_data->dcache.linesz = L1_CACHE_BYTES;
@@ -183,21 +181,26 @@
size = sizes[(cvr >> 20) & 0xf];
cpu_data->icache.way_incr = (size >> 1);
cpu_data->icache.sets = (size >> 6);
- cpu_data->icache.entry_mask =
- (cpu_data->icache.way_incr - (1 << 5));
+
}
+ /* Setup the rest of the I-cache info */
+ cpu_data->icache.entry_mask = cpu_data->icache.way_incr -
+ cpu_data->icache.linesz;
+
cpu_data->icache.way_size = cpu_data->icache.sets *
cpu_data->icache.linesz;
+ /* And the rest of the D-cache */
if (cpu_data->dcache.ways > 1) {
size = sizes[(cvr >> 16) & 0xf];
cpu_data->dcache.way_incr = (size >> 1);
cpu_data->dcache.sets = (size >> 6);
- cpu_data->dcache.entry_mask =
- (cpu_data->dcache.way_incr - (1 << 5));
}
+ cpu_data->dcache.entry_mask = cpu_data->dcache.way_incr -
+ cpu_data->dcache.linesz;
+
cpu_data->dcache.way_size = cpu_data->dcache.sets *
cpu_data->dcache.linesz;
@@ -219,11 +222,14 @@
cpu_data->scache.way_incr = (1 << 16);
cpu_data->scache.entry_shift = 5;
- cpu_data->scache.entry_mask = 0xffe0;
cpu_data->scache.ways = 4;
cpu_data->scache.linesz = L1_CACHE_BYTES;
+ cpu_data->scache.entry_mask =
+ (cpu_data->scache.way_incr - cpu_data->scache.linesz);
cpu_data->scache.sets = size /
(cpu_data->scache.linesz * cpu_data->scache.ways);
+ cpu_data->scache.way_size =
+ (cpu_data->scache.sets * cpu_data->scache.linesz);
}
return 0;