Commit 668df17f authored by Stuart Summers's avatar Stuart Summers Committed by Chris Wilson

drm/i915: Add new function to copy subslices for a slice

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: default avatarStuart Summers <stuart.summers@intel.com>
Reviewed-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190823160307.180813-11-stuart.summers@intel.com
parent eaef5b3c
......@@ -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);
......
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