intel: Pull the guts of gen7_l3_state.c into a shared helper

Signed-off-by: Jason Ekstrand <[email protected]>
Reviewed-by: Jordan Justen <[email protected]>

1 files changed, 90 insertions, 0 deletions

diff --git a/src/intel/common/gen_l3_config.h b/src/intel/common/gen_l3_config.h
new file mode 100644
index 00000000000..0540a7c2935
--- /dev/null
+++ b/src/intel/common/gen_l3_config.h
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2015 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include <stdio.h>
+
+#include "gen_device_info.h"
+
+/**
+ * Chunk of L3 cache reserved for some specific purpose.
+ */
+enum gen_l3_partition {
+   /** Shared local memory. */
+   GEN_L3P_SLM = 0,
+   /** Unified return buffer. */
+   GEN_L3P_URB,
+   /** Union of DC and RO. */
+   GEN_L3P_ALL,
+   /** Data cluster RW partition. */
+   GEN_L3P_DC,
+   /** Union of IS, C and T. */
+   GEN_L3P_RO,
+   /** Instruction and state cache. */
+   GEN_L3P_IS,
+   /** Constant cache. */
+   GEN_L3P_C,
+   /** Texture cache. */
+   GEN_L3P_T,
+   /** Number of supported L3 partitions. */
+   GEN_NUM_L3P
+};
+
+/**
+ * L3 configuration represented as the number of ways allocated for each
+ * partition.  \sa get_l3_way_size().
+ */
+struct gen_l3_config {
+   unsigned n[GEN_NUM_L3P];
+};
+
+/**
+ * L3 configuration represented as a vector of weights giving the desired
+ * relative size of each partition.  The scale is arbitrary, only the ratios
+ * between weights will have an influence on the selection of the closest L3
+ * configuration.
+ */
+struct gen_l3_weights {
+   float w[GEN_NUM_L3P];
+};
+
+float gen_diff_l3_weights(struct gen_l3_weights w0, struct gen_l3_weights w1);
+
+struct gen_l3_weights
+gen_get_default_l3_weights(const struct gen_device_info *devinfo,
+                           bool needs_dc, bool needs_slm);
+
+struct gen_l3_weights
+gen_get_l3_config_weights(const struct gen_l3_config *cfg);
+
+const struct gen_l3_config *
+gen_get_default_l3_config(const struct gen_device_info *devinfo);
+
+const struct gen_l3_config *
+gen_get_l3_config(const struct gen_device_info *devinfo,
+                  struct gen_l3_weights w0);
+
+unsigned
+gen_get_l3_config_urb_size(const struct gen_device_info *devinfo,
+                           const struct gen_l3_config *cfg);
+
+void gen_dump_l3_config(const struct gen_l3_config *cfg, FILE *fp);