[Mesa-dev] [PATCH 1/2] i965: Add and initialize l3_banks field for gen7+

Anuj Phogat anuj.phogat at gmail.com
Thu Jun 1 20:10:36 UTC 2017


This new field helps simplify l3 way size computations
in next patch.

Suggested-by: Francisco Jerez <currojerez at riseup.net>
Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
Cc: Francisco Jerez <currojerez at riseup.net>
---
 src/intel/common/gen_device_info.c | 23 ++++++++++++++++++++++-
 src/intel/common/gen_device_info.h |  1 +
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/src/intel/common/gen_device_info.c b/src/intel/common/gen_device_info.c
index 209b293..7c1f9b4 100644
--- a/src/intel/common/gen_device_info.c
+++ b/src/intel/common/gen_device_info.c
@@ -132,6 +132,7 @@ static const struct gen_device_info gen_device_info_snb_gt2 = {
 static const struct gen_device_info gen_device_info_ivb_gt1 = {
    GEN7_FEATURES, .is_ivybridge = true, .gt = 1,
    .num_slices = 1,
+   .l3_banks = 2,
    .max_vs_threads = 36,
    .max_tcs_threads = 36,
    .max_tes_threads = 36,
@@ -156,6 +157,7 @@ static const struct gen_device_info gen_device_info_ivb_gt1 = {
 static const struct gen_device_info gen_device_info_ivb_gt2 = {
    GEN7_FEATURES, .is_ivybridge = true, .gt = 2,
    .num_slices = 1,
+   .l3_banks = 4,
    .max_vs_threads = 128,
    .max_tcs_threads = 128,
    .max_tes_threads = 128,
@@ -180,6 +182,7 @@ static const struct gen_device_info gen_device_info_ivb_gt2 = {
 static const struct gen_device_info gen_device_info_byt = {
    GEN7_FEATURES, .is_baytrail = true, .gt = 1,
    .num_slices = 1,
+   .l3_banks = 1,
    .has_llc = false,
    .max_vs_threads = 36,
    .max_tcs_threads = 36,
@@ -211,6 +214,7 @@ static const struct gen_device_info gen_device_info_byt = {
 static const struct gen_device_info gen_device_info_hsw_gt1 = {
    HSW_FEATURES, .gt = 1,
    .num_slices = 1,
+   .l3_banks = 2,
    .max_vs_threads = 70,
    .max_tcs_threads = 70,
    .max_tes_threads = 70,
@@ -235,6 +239,7 @@ static const struct gen_device_info gen_device_info_hsw_gt1 = {
 static const struct gen_device_info gen_device_info_hsw_gt2 = {
    HSW_FEATURES, .gt = 2,
    .num_slices = 1,
+   .l3_banks = 4,
    .max_vs_threads = 280,
    .max_tcs_threads = 256,
    .max_tes_threads = 280,
@@ -259,6 +264,7 @@ static const struct gen_device_info gen_device_info_hsw_gt2 = {
 static const struct gen_device_info gen_device_info_hsw_gt3 = {
    HSW_FEATURES, .gt = 3,
    .num_slices = 2,
+   .l3_banks = 8,
    .max_vs_threads = 280,
    .max_tcs_threads = 256,
    .max_tes_threads = 280,
@@ -299,6 +305,7 @@ static const struct gen_device_info gen_device_info_hsw_gt3 = {
 static const struct gen_device_info gen_device_info_bdw_gt1 = {
    GEN8_FEATURES, .gt = 1,
    .num_slices = 1,
+   .l3_banks = 2,
    .max_cs_threads = 42,
    .urb = {
       .size = 192,
@@ -318,6 +325,7 @@ static const struct gen_device_info gen_device_info_bdw_gt1 = {
 static const struct gen_device_info gen_device_info_bdw_gt2 = {
    GEN8_FEATURES, .gt = 2,
    .num_slices = 1,
+   .l3_banks = 4,
    .max_cs_threads = 56,
    .urb = {
       .size = 384,
@@ -337,6 +345,7 @@ static const struct gen_device_info gen_device_info_bdw_gt2 = {
 static const struct gen_device_info gen_device_info_bdw_gt3 = {
    GEN8_FEATURES, .gt = 3,
    .num_slices = 2,
+   .l3_banks = 8,
    .max_cs_threads = 56,
    .urb = {
       .size = 384,
@@ -357,6 +366,7 @@ static const struct gen_device_info gen_device_info_chv = {
    GEN8_FEATURES, .is_cherryview = 1, .gt = 1,
    .has_llc = false,
    .num_slices = 1,
+   .l3_banks = 2,
    .max_vs_threads = 80,
    .max_tcs_threads = 80,
    .max_tes_threads = 80,
@@ -413,6 +423,7 @@ static const struct gen_device_info gen_device_info_chv = {
    .gt = 1,                                        \
    .has_llc = false,                               \
    .num_slices = 1,                                \
+   .l3_banks = 2,                                  \
    .max_vs_threads = 112,                          \
    .max_tcs_threads = 112,                         \
    .max_tes_threads = 112,                         \
@@ -457,22 +468,26 @@ static const struct gen_device_info gen_device_info_chv = {
 static const struct gen_device_info gen_device_info_skl_gt1 = {
    GEN9_FEATURES, .gt = 1,
    .num_slices = 1,
+   .l3_banks = 2,
    .urb.size = 192,
 };
 
 static const struct gen_device_info gen_device_info_skl_gt2 = {
    GEN9_FEATURES, .gt = 2,
    .num_slices = 1,
+   .l3_banks = 4,
 };
 
 static const struct gen_device_info gen_device_info_skl_gt3 = {
    GEN9_FEATURES, .gt = 3,
    .num_slices = 2,
+   .l3_banks = 8,
 };
 
 static const struct gen_device_info gen_device_info_skl_gt4 = {
    GEN9_FEATURES, .gt = 4,
    .num_slices = 3,
+   .l3_banks = 12,
    /* From the "L3 Allocation and Programming" documentation:
     *
     * "URB is limited to 1008KB due to programming restrictions.  This is not a
@@ -489,7 +504,8 @@ static const struct gen_device_info gen_device_info_bxt = {
 };
 
 static const struct gen_device_info gen_device_info_bxt_2x6 = {
-   GEN9_LP_FEATURES_2X6
+   GEN9_LP_FEATURES_2X6,
+   .l3_banks = 1,
 };
 /*
  * Note: for all KBL SKUs, the PRM says SKL for GS entries, not SKL+.
@@ -504,6 +520,7 @@ static const struct gen_device_info gen_device_info_kbl_gt1 = {
    .max_cs_threads = 7 * 6,
    .urb.size = 192,
    .num_slices = 1,
+   .l3_banks = 2,
 };
 
 static const struct gen_device_info gen_device_info_kbl_gt1_5 = {
@@ -513,6 +530,7 @@ static const struct gen_device_info gen_device_info_kbl_gt1_5 = {
 
    .max_cs_threads = 7 * 6,
    .num_slices = 1,
+   .l3_banks = 4,
 };
 
 static const struct gen_device_info gen_device_info_kbl_gt2 = {
@@ -521,6 +539,7 @@ static const struct gen_device_info gen_device_info_kbl_gt2 = {
    .gt = 2,
 
    .num_slices = 1,
+   .l3_banks = 4,
 };
 
 static const struct gen_device_info gen_device_info_kbl_gt3 = {
@@ -529,6 +548,7 @@ static const struct gen_device_info gen_device_info_kbl_gt3 = {
    .gt = 3,
 
    .num_slices = 2,
+   .l3_banks = 8,
 };
 
 static const struct gen_device_info gen_device_info_kbl_gt4 = {
@@ -548,6 +568,7 @@ static const struct gen_device_info gen_device_info_kbl_gt4 = {
     */
    .urb.size = 1008 / 3,
    .num_slices = 3,
+   .l3_banks = 12,
 };
 
 static const struct gen_device_info gen_device_info_glk = {
diff --git a/src/intel/common/gen_device_info.h b/src/intel/common/gen_device_info.h
index 80676d0..6207630 100644
--- a/src/intel/common/gen_device_info.h
+++ b/src/intel/common/gen_device_info.h
@@ -96,6 +96,7 @@ struct gen_device_info
     * to change, so we program @max_cs_threads as the lower maximum.
     */
    unsigned num_slices;
+   unsigned l3_banks;
    unsigned max_vs_threads;   /**< Maximum Vertex Shader threads */
    unsigned max_tcs_threads;  /**< Maximum Hull Shader threads */
    unsigned max_tes_threads;  /**< Maximum Domain Shader threads */
-- 
2.9.3



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