From 668df17f594d6f57e822ceee680ace3233e97f02 Mon Sep 17 00:00:00 2001
From: Stuart Summers <stuart.summers@intel.com>
Date: Fri, 23 Aug 2019 09:03:06 -0700
Subject: drm/i915: Add new function to copy subslices for a slice
Git-commit: 668df17f594d6f57e822ceee680ace3233e97f02
Patch-mainline: v5.5-rc1
References: bsc#1152489
Add a new function to copy subslices for a specified slice
between intel_sseu structures for the purpose of determining
power-gate status. Note that currently ss_stride has a max
of 1.
Signed-off-by: Stuart Summers <stuart.summers@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190823160307.180813-11-stuart.summers@intel.com
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
drivers/gpu/drm/i915/i915_debugfs.c | 17 ++++++++++++++---
1 file changed, 14 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 44797f8b7c50..6e8b40299939 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -3726,6 +3726,15 @@ i915_cache_sharing_set(void *data, u64 val)
return 0;
}
+static void
+intel_sseu_copy_subslices(const struct sseu_dev_info *sseu, int slice,
+ u8 *to_mask)
+{
+ int offset = slice * sseu->ss_stride;
+
+ memcpy(&to_mask[offset], &sseu->subslice_mask[offset], sseu->ss_stride);
+}
+
DEFINE_SIMPLE_ATTRIBUTE(i915_cache_sharing_fops,
i915_cache_sharing_get, i915_cache_sharing_set,
"%llu\n");
@@ -3799,7 +3808,7 @@ static void gen10_sseu_device_status(struct drm_i915_private *dev_priv,
continue;
sseu->slice_mask |= BIT(s);
- sseu->subslice_mask[s] = info->sseu.subslice_mask[s];
+ intel_sseu_copy_subslices(&info->sseu, s, sseu->subslice_mask);
for (ss = 0; ss < info->sseu.max_subslices; ss++) {
unsigned int eu_cnt;
@@ -3850,7 +3859,8 @@ static void gen9_sseu_device_status(struct drm_i915_private *dev_priv,
sseu->slice_mask |= BIT(s);
if (IS_GEN9_BC(dev_priv))
- sseu->subslice_mask[s] = info->sseu.subslice_mask[s];
+ intel_sseu_copy_subslices(&info->sseu, s,
+ sseu->subslice_mask);
for (ss = 0; ss < info->sseu.max_subslices; ss++) {
unsigned int eu_cnt;
@@ -3886,7 +3896,8 @@ static void broadwell_sseu_device_status(struct drm_i915_private *dev_priv,
if (sseu->slice_mask) {
sseu->eu_per_subslice = info->sseu.eu_per_subslice;
for (s = 0; s < fls(sseu->slice_mask); s++)
- sseu->subslice_mask[s] = info->sseu.subslice_mask[s];
+ intel_sseu_copy_subslices(&info->sseu, s,
+ sseu->subslice_mask);
sseu->eu_total = sseu->eu_per_subslice *
intel_sseu_subslice_total(sseu);
--
2.28.0