Mesa (master): v3d: Detect the correct number of QPUs and use it to fix the spill size.
GitLab Mirror
gitlab-mirror at kemper.freedesktop.org
Fri Apr 12 23:21:30 UTC 2019
Module: Mesa
Branch: master
Commit: 8a2d91e1248e31426ff656c02d3e598f9e117422
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=8a2d91e1248e31426ff656c02d3e598f9e117422
Author: Eric Anholt <eric at anholt.net>
Date: Thu Apr 11 12:28:30 2019 -0700
v3d: Detect the correct number of QPUs and use it to fix the spill size.
We were missing a * 4 even if the particular hardware matched our
assumption.
---
src/broadcom/common/v3d_device_info.h | 3 +++
src/gallium/drivers/v3d/v3d_program.c | 10 ++++++----
src/gallium/drivers/v3d/v3d_screen.c | 4 ++++
3 files changed, 13 insertions(+), 4 deletions(-)
diff --git a/src/broadcom/common/v3d_device_info.h b/src/broadcom/common/v3d_device_info.h
index b0a2a02154c..608b5845444 100644
--- a/src/broadcom/common/v3d_device_info.h
+++ b/src/broadcom/common/v3d_device_info.h
@@ -35,6 +35,9 @@ struct v3d_device_info {
/** Size of the VPM, in bytes. */
int vpm_size;
+
+ /* NSLC * QUPS from the core's IDENT registers. */
+ int qpu_count;
};
#endif
diff --git a/src/gallium/drivers/v3d/v3d_program.c b/src/gallium/drivers/v3d/v3d_program.c
index 7805b808a01..cdacb5dbb80 100644
--- a/src/gallium/drivers/v3d/v3d_program.c
+++ b/src/gallium/drivers/v3d/v3d_program.c
@@ -376,11 +376,13 @@ v3d_get_compiled_shader(struct v3d_context *v3d,
if (shader->prog_data.base->spill_size >
v3d->prog.spill_size_per_thread) {
- /* Max 4 QPUs per slice, 3 slices per core. We only do single
- * core so far. This overallocates memory on smaller cores.
+ /* The TIDX register we use for choosing the area to access
+ * for scratch space is: (core << 6) | (qpu << 2) | thread.
+ * Even at minimum threadcount in a particular shader, that
+ * means we still multiply by qpus by 4.
*/
- int total_spill_size =
- 4 * 3 * shader->prog_data.base->spill_size;
+ int total_spill_size = (v3d->screen->devinfo.qpu_count * 4 *
+ shader->prog_data.base->spill_size);
v3d_bo_unreference(&v3d->prog.spill_bo);
v3d->prog.spill_bo = v3d_bo_alloc(v3d->screen,
diff --git a/src/gallium/drivers/v3d/v3d_screen.c b/src/gallium/drivers/v3d/v3d_screen.c
index b77e3d9060e..6f91e35521a 100644
--- a/src/gallium/drivers/v3d/v3d_screen.c
+++ b/src/gallium/drivers/v3d/v3d_screen.c
@@ -594,6 +594,10 @@ v3d_get_device_info(struct v3d_screen *screen)
screen->devinfo.vpm_size = (ident1.value >> 28 & 0xf) * 8192;
+ int nslc = (ident1.value >> 4) & 0xf;
+ int qups = (ident1.value >> 8) & 0xf;
+ screen->devinfo.qpu_count = nslc * qups;
+
switch (screen->devinfo.ver) {
case 33:
case 41:
More information about the mesa-commit
mailing list