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drm/i915/xehp: Changes to ss/eu definitions

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Xe_HP no longer has "slices" in the same way that old platforms did.
There are new concepts (gslices, cslices, mslices) that apply in various
contexts, but for the purposes of fusing slices no longer exist and we
just have one large pool of dual-subslices (DSS) to work with.
Furthermore, the meaning of the DSS fuse is inverted compared to past
platforms --- it now specifies which DSS are enabled rather than which
ones are disabled.

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Signed-off-by: Stuart Summers <stuart.summers@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Prasad Nallani <prasad.nallani@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210729170008.2836648-9-matthew.d.roper@intel.com
This commit is contained in:
Matthew Auld
2021-07-29 09:59:58 -07:00
committed by Matt Roper
parent e053163660
commit 05b78d291d
3 changed files with 27 additions and 6 deletions
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6
drivers/gpu/drm/i915/i915_getparam.c
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@@ -15,7 +15,7 @@ int i915_getparam_ioctl(struct drm_device *dev, void *data,
struct pci_dev *pdev = to_pci_dev(dev->dev);
const struct sseu_dev_info *sseu = &i915->gt.info.sseu;
drm_i915_getparam_t *param = data;
int value;
int value = 0;
switch (param->param) {
case I915_PARAM_IRQ_ACTIVE:
@@ -150,7 +150,9 @@ int i915_getparam_ioctl(struct drm_device *dev, void *data,
return -ENODEV;
break;
case I915_PARAM_SUBSLICE_MASK:
value = sseu->subslice_mask[0];
/* Only copy bits from the first slice */
memcpy(&value, sseu->subslice_mask,
min(sseu->ss_stride, (u8)sizeof(value)));
if (!value)
return -ENODEV;
break;