Check first if the hardware and kernel supports resource streamer. If this
is allowed, tell the kernel to enable the resource streamer enable bit on
MI_BATCHBUFFER_START by specifying I915_EXEC_RESOURCE_STREAMER
execbuffer flags.
v2: - Use new I915_PARAM_HAS_RESOURCE_STREAMER ioctl to check if kernel
supports RS (Ken).
- Add brw_device_info::has_resource_streamer and toggle it for
Haswell, Broadwell, Cherryview, Skylake, and Broxton (Ken).
Cc: kenn...@whitecape.org
Signed-off-by: Abdiel Janulgue <abdiel.janul...@linux.intel.com>
---
src/mesa/drivers/dri/i965/brw_context.c | 5 +++++
src/mesa/drivers/dri/i965/brw_context.h | 1 +
src/mesa/drivers/dri/i965/brw_device_info.c | 5 ++++-
src/mesa/drivers/dri/i965/brw_device_info.h | 1 +
src/mesa/drivers/dri/i965/intel_batchbuffer.c | 8 +++++++-
src/mesa/drivers/dri/i965/intel_screen.c | 12 ++++++++++++
src/mesa/drivers/dri/i965/intel_screen.h | 5 +++++
7 files changed, 35 insertions(+), 2 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_context.c
b/src/mesa/drivers/dri/i965/brw_context.c
index f39b350..27abf0e 100644
--- a/src/mesa/drivers/dri/i965/brw_context.c
+++ b/src/mesa/drivers/dri/i965/brw_context.c
@@ -896,6 +896,11 @@ brwCreateContext(gl_api api,
brw->predicate.state = BRW_PREDICATE_STATE_RENDER;
+ brw->use_resource_streamer = devinfo->has_resource_streamer &&
+ screen->has_resource_streamer &&
+ (brw_env_var_as_boolean("INTEL_USE_HW_BT", false) ||
+ brw_env_var_as_boolean("INTEL_USE_GATHER", false));
+
ctx->VertexProgram._MaintainTnlProgram = true;
ctx->FragmentProgram._MaintainTexEnvProgram = true;
diff --git a/src/mesa/drivers/dri/i965/brw_context.h
b/src/mesa/drivers/dri/i965/brw_context.h
index 01c4283..9754d7b 100644
--- a/src/mesa/drivers/dri/i965/brw_context.h
+++ b/src/mesa/drivers/dri/i965/brw_context.h
@@ -1138,6 +1138,7 @@ struct brw_context
bool no_simd8;
bool use_rep_send;
bool scalar_vs;
+ bool use_resource_streamer;
/**
* Some versions of Gen hardware don't do centroid interpolation correctly
diff --git a/src/mesa/drivers/dri/i965/brw_device_info.c
b/src/mesa/drivers/dri/i965/brw_device_info.c
index 97243a4..35c347c 100644
--- a/src/mesa/drivers/dri/i965/brw_device_info.c
+++ b/src/mesa/drivers/dri/i965/brw_device_info.c
@@ -170,7 +170,8 @@ static const struct brw_device_info brw_device_info_byt = {
#define HSW_FEATURES \
GEN7_FEATURES, \
.is_haswell = true, \
- .supports_simd16_3src = true
+ .supports_simd16_3src = true, \
+ .has_resource_streamer = true
static const struct brw_device_info brw_device_info_hsw_gt1 = {
HSW_FEATURES, .gt = 1,
@@ -229,6 +230,7 @@ static const struct brw_device_info brw_device_info_hsw_gt3
= {
#define GEN8_FEATURES \
.gen = 8, \
.has_hiz_and_separate_stencil = true, \
+ .has_resource_streamer = true, \
.must_use_separate_stencil = true, \
.has_llc = true, \
.has_pln = true, \
@@ -301,6 +303,7 @@ static const struct brw_device_info brw_device_info_chv = {
#define GEN9_FEATURES \
.gen = 9, \
.has_hiz_and_separate_stencil = true, \
+ .has_resource_streamer = true, \
.must_use_separate_stencil = true, \
.has_llc = true, \
.has_pln = true, \
diff --git a/src/mesa/drivers/dri/i965/brw_device_info.h
b/src/mesa/drivers/dri/i965/brw_device_info.h
index 65c024c..b97cc4a 100644
--- a/src/mesa/drivers/dri/i965/brw_device_info.h
+++ b/src/mesa/drivers/dri/i965/brw_device_info.h
@@ -45,6 +45,7 @@ struct brw_device_info
bool has_compr4;
bool has_surface_tile_offset;
bool supports_simd16_3src;
+ bool has_resource_streamer;
/**
* Quirks:
diff --git a/src/mesa/drivers/dri/i965/intel_batchbuffer.c
b/src/mesa/drivers/dri/i965/intel_batchbuffer.c
index ed659ed..cd34c6df 100644
--- a/src/mesa/drivers/dri/i965/intel_batchbuffer.c
+++ b/src/mesa/drivers/dri/i965/intel_batchbuffer.c
@@ -267,6 +267,11 @@ throttle(struct brw_context *brw)
}
}
+/* Drop when RS headers get pulled to libdrm */
+#ifndef I915_EXEC_RESOURCE_STREAMER
+#define I915_EXEC_RESOURCE_STREAMER (1<<15)
+#endif
+
/* TODO: Push this whole function into bufmgr.
*/
static int
@@ -293,7 +298,8 @@ do_flush_locked(struct brw_context *brw)
if (brw->gen >= 6 && batch->ring == BLT_RING) {
flags = I915_EXEC_BLT;
} else {
- flags = I915_EXEC_RENDER;
+ flags = I915_EXEC_RENDER |
+ (brw->use_resource_streamer ? I915_EXEC_RESOURCE_STREAMER : 0);
}
if (batch->needs_sol_reset)
flags |= I915_EXEC_GEN7_SOL_RESET;
diff --git a/src/mesa/drivers/dri/i965/intel_screen.c
b/src/mesa/drivers/dri/i965/intel_screen.c
index 896a125..d15b1d6 100644
--- a/src/mesa/drivers/dri/i965/intel_screen.c
+++ b/src/mesa/drivers/dri/i965/intel_screen.c
@@ -1331,6 +1331,11 @@ brw_get_revision(int fd)
return revision;
}
+/* Drop when RS headers get pulled to libdrm */
+#ifndef I915_PARAM_HAS_RESOURCE_STREAMER
+#define I915_PARAM_HAS_RESOURCE_STREAMER 35
+#endif
+
/**
* This is the driver specific part of the createNewScreen entry point.
* Called when using DRI2.
@@ -1420,6 +1425,13 @@ __DRIconfig **intelInitScreen2(__DRIscreen *psp)
intelScreen->compiler = brw_compiler_create(intelScreen,
intelScreen->devinfo);
+ if (intelScreen->devinfo->is_haswell || intelScreen->devinfo->gen >= 8) {
+ getparam.param = I915_PARAM_HAS_RESOURCE_STREAMER;
+
+ const int ret = drmIoctl(psp->fd, DRM_IOCTL_I915_GETPARAM, &getparam);
+ intelScreen->has_resource_streamer = (ret != -1 || errno != EINVAL);
+ }
+
return (const __DRIconfig**) intel_screen_make_configs(psp);
}
diff --git a/src/mesa/drivers/dri/i965/intel_screen.h
b/src/mesa/drivers/dri/i965/intel_screen.h
index 742b3d3..9e07129 100644
--- a/src/mesa/drivers/dri/i965/intel_screen.h
+++ b/src/mesa/drivers/dri/i965/intel_screen.h
@@ -53,6 +53,11 @@ struct intel_screen
bool hw_has_swizzling;
/**
+ * Does the kernel support resource streamer?
+ */
+ bool has_resource_streamer;
+
+ /**
* Does the kernel support context reset notifications?
*/
bool has_context_reset_notification;
--
1.9.1
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