summaryrefslogtreecommitdiffstats
path: root/src/gallium/drivers/ilo/ilo_screen.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/gallium/drivers/ilo/ilo_screen.c')
-rw-r--r--src/gallium/drivers/ilo/ilo_screen.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/src/gallium/drivers/ilo/ilo_screen.c b/src/gallium/drivers/ilo/ilo_screen.c
index 5d652e4ad73..442e704615d 100644
--- a/src/gallium/drivers/ilo/ilo_screen.c
+++ b/src/gallium/drivers/ilo/ilo_screen.c
@@ -652,6 +652,7 @@ init_dev(struct ilo_dev_info *dev, const struct intel_winsys_info *info)
dev->has_llc = info->has_llc;
dev->has_address_swizzling = info->has_address_swizzling;
dev->has_logical_context = info->has_logical_context;
+ dev->has_ppgtt = info->has_ppgtt;
dev->has_timestamp = info->has_timestamp;
dev->has_gen7_sol_reset = info->has_gen7_sol_reset;
@@ -661,6 +662,24 @@ init_dev(struct ilo_dev_info *dev, const struct intel_winsys_info *info)
}
/*
+ * PIPE_CONTROL and MI_* use PPGTT writes on GEN7+ and privileged GGTT
+ * writes on GEN6.
+ *
+ * From the Sandy Bridge PRM, volume 1 part 3, page 101:
+ *
+ * "[DevSNB] When Per-Process GTT Enable is set, it is assumed that all
+ * code is in a secure environment, independent of address space.
+ * Under this condition, this bit only specifies the address space
+ * (GGTT or PPGTT). All commands are executed "as-is""
+ *
+ * We need PPGTT to be enabled on GEN6 too.
+ */
+ if (!dev->has_ppgtt) {
+ /* experiments show that it does not really matter... */
+ ilo_warn("PPGTT disabled\n");
+ }
+
+ /*
* From the Sandy Bridge PRM, volume 4 part 2, page 18:
*
* "[DevSNB]: The GT1 product's URB provides 32KB of storage, arranged