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| author | Stuart Summers <stuart.summers@intel.com> | 2019-05-24 18:40:19 +0300 |
|---|---|---|
| committer | Manasi Navare <manasi.d.navare@intel.com> | 2019-05-28 21:18:17 +0300 |
| commit | 135a63b68250b8ab2ed854f0c907d5ff2a56f09e (patch) | |
| tree | c4fb86e15e93061e7582fbecb389ebb79d38d8e7 /drivers/gpu/drm/i915/i915_query.c | |
| parent | bd41ca49a2735eb2f016a3fa4fe9716b56b55d71 (diff) | |
| download | linux-135a63b68250b8ab2ed854f0c907d5ff2a56f09e.tar.xz | |
drm/i915: Add macro for SSEU stride calculation
Subslice stride and EU stride are calculated multiple times in
i915_query. Move this calculation to a macro to reduce code duplication.
v2: update headers in intel_sseu.h
v3: use GEN_SSEU_STRIDE for stride calculations in intel_sseu.h
apply s/bits/max_entries/ to GEN_SSEU_STRIDE parameter
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Stuart Summers <stuart.summers@intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190524154022.13575-3-stuart.summers@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_query.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_query.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/drivers/gpu/drm/i915/i915_query.c b/drivers/gpu/drm/i915/i915_query.c index 414d0a6d1f70..7b7016171057 100644 --- a/drivers/gpu/drm/i915/i915_query.c +++ b/drivers/gpu/drm/i915/i915_query.c @@ -37,6 +37,8 @@ static int query_topology_info(struct drm_i915_private *dev_priv, const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu; struct drm_i915_query_topology_info topo; u32 slice_length, subslice_length, eu_length, total_length; + u8 subslice_stride = GEN_SSEU_STRIDE(sseu->max_subslices); + u8 eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice); int ret; if (query_item->flags != 0) @@ -48,12 +50,10 @@ static int query_topology_info(struct drm_i915_private *dev_priv, BUILD_BUG_ON(sizeof(u8) != sizeof(sseu->slice_mask)); slice_length = sizeof(sseu->slice_mask); - subslice_length = sseu->max_slices * - DIV_ROUND_UP(sseu->max_subslices, BITS_PER_BYTE); - eu_length = sseu->max_slices * sseu->max_subslices * - DIV_ROUND_UP(sseu->max_eus_per_subslice, BITS_PER_BYTE); - - total_length = sizeof(topo) + slice_length + subslice_length + eu_length; + subslice_length = sseu->max_slices * subslice_stride; + eu_length = sseu->max_slices * sseu->max_subslices * eu_stride; + total_length = sizeof(topo) + slice_length + subslice_length + + eu_length; ret = copy_query_item(&topo, sizeof(topo), total_length, query_item); @@ -69,10 +69,9 @@ static int query_topology_info(struct drm_i915_private *dev_priv, topo.max_eus_per_subslice = sseu->max_eus_per_subslice; topo.subslice_offset = slice_length; - topo.subslice_stride = DIV_ROUND_UP(sseu->max_subslices, BITS_PER_BYTE); + topo.subslice_stride = subslice_stride; topo.eu_offset = slice_length + subslice_length; - topo.eu_stride = - DIV_ROUND_UP(sseu->max_eus_per_subslice, BITS_PER_BYTE); + topo.eu_stride = eu_stride; if (__copy_to_user(u64_to_user_ptr(query_item->data_ptr), &topo, sizeof(topo))) |