Suggested-by: Kenneth Graunke <kenn...@whitecape.org>
Signed-off-by: Jordan Justen <jordan.l.jus...@intel.com>
---
 src/intel/dev/gen_device_info.c | 13 ++++++++-----
 src/intel/dev/gen_device_info.h |  8 ++++++++
 2 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/src/intel/dev/gen_device_info.c b/src/intel/dev/gen_device_info.c
index 1773009d33c..de018c6a692 100644
--- a/src/intel/dev/gen_device_info.c
+++ b/src/intel/dev/gen_device_info.c
@@ -284,11 +284,13 @@ static const struct gen_device_info gen_device_info_byt = 
{
    },
 };
 
-#define HSW_FEATURES             \
-   GEN7_FEATURES,                \
-   .is_haswell = true,           \
-   .supports_simd16_3src = true, \
-   .has_resource_streamer = true
+#define HSW_FEATURES                         \
+   GEN7_FEATURES,                            \
+   .is_haswell = true,                       \
+   .supports_simd16_3src = true,             \
+   .has_resource_streamer = true,            \
+   /* WaCSScratchSize:hsw */                 \
+   .cs_scratch_ids_per_subslice = 16 * 8
 
 static const struct gen_device_info gen_device_info_hsw_gt1 = {
    HSW_FEATURES, .gt = 1,
@@ -476,6 +478,7 @@ static const struct gen_device_info gen_device_info_chv = {
    .max_gs_threads = 80,
    .max_wm_threads = 128,
    .max_cs_threads = 6 * 7,
+   .cs_scratch_ids_per_subslice = 8 * 7,
    .urb = {
       .size = 192,
       .min_entries = {
diff --git a/src/intel/dev/gen_device_info.h b/src/intel/dev/gen_device_info.h
index b8044d00032..fa6b38f19ec 100644
--- a/src/intel/dev/gen_device_info.h
+++ b/src/intel/dev/gen_device_info.h
@@ -148,6 +148,14 @@ struct gen_device_info
     */
    unsigned max_cs_threads;
 
+   /**
+    * The range of scratch addresses may differ from the number of EUs
+    * available for compute programs. This requires allocating a larger
+    * scratch buffer. For affected hardware, this will be set. If this is not
+    * set, then max_cs_threads should be used instead.
+    */
+   unsigned cs_scratch_ids_per_subslice;
+
    struct {
       /**
        * Hardware default URB size.
-- 
2.16.1

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