drm/i915/sseu: Disassociate internal subslice mask representation from uapi

As with EU masks, it's easier to store subslice/DSS masks internally in
a format that's more natural for the driver to work with, and then only
covert into the u8[] uapi form when the query ioctl is invoked. Since
the hardware design changed significantly with Xe_HP, we'll use a union
to choose between the old "hsw-style" subslice masks or the newer xehp
mask. HSW-style masks will be stored in an array of u8's, indexed by
slice (there's never more than 6 subslices per slice on older
platforms). For Xe_HP and beyond where slices no longer exist, we only
need a single bitmask. However we already know that this mask is
eventually going to grow too large for a simple u64 to hold, so we'll
represent it in a manner that can be operated on by the utilities in
linux/bitmap.h.

v2:
- Fix typo: BIT(s) -> BIT(ss) in gen9_sseu_device_status()

v3:
- Eliminate sseu->ss_stride and just calculate the stride while
specifically handling uapi. (Tvrtko)
- Use BITMAP_BITS() macro to refer to size of masks rather than
passing I915_MAX_SS_FUSE_BITS directly. (Tvrtko)
- Report compute/geometry DSS masks separately when dumping Xe_HP SSEU
info. (Tvrtko)
- Restore dropped range checks to intel_sseu_has_subslice(). (Tvrtko)

v4:
- Make the bitmap size macro check the size of the .xehp field rather
than the containing union. (Tvrtko)
- Don't add GEM_BUG_ON() intel_sseu_has_subslice()'s check for whether
slice or subslice ID exceed sseu->max_[sub]slices; various loops
in the driver are expected to exceed these, so we should just
silently return 'false.'

v5:
- Move XEHP_BITMAP_BITS() to the header so that we can also replace a
usage of I915_MAX_SS_FUSE_BITS in one of the inline functions.
(Bala)
- Change the local variable in intel_slicemask_from_xehp_dssmask() from
u16 to 'unsigned long' to make it a bit more future-proof.

Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Acked-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220601150725.521468-6-matthew.d.roper@intel.com

drm/i915: Reduce stack usage in debugfs due to SSEU

sseu_dev_info is already a pretty large structure which will likely
continue to grow when future platforms increase potential DSS and EU
counts. Let's switch the stack placement of this structure in debugfs
with a dynamic allocation.

Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220315020805.844962-1-matthew.d.roper@intel.com

drm/i915/xehp: Update topology dumps for Xe_HP

When running on Xe_HP or beyond, let's use an updated format for
describing topology in our error state dumps and debugfs to give a
more accurate view of the hardware:

- Just report DSS directly without the legacy "slice0" output that's no
longer meaningful.
- Indicate whether each DSS is accessible for geometry and/or compute.
- Rename "rcs_topology" to "sseu_topology" since the information
reported is common to both RCS and CCS engines now.

v2:
- Name static functions in a more consistent manner. (Lucas)

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220311225459.385515-2-matthew.d.roper@intel.com

drm/i915: Use str_yes_no()

Remove the local yesno() implementation and adopt the str_yes_no() from
linux/string_helpers.h.

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220225234631.3725943-1-lucas.demarchi@intel.com

drm/i915: Move GT registers to their own header file

This is a huge, chaotic mass of registers copied over as-is without any
real cleanup. We'll come back and organize these better, align on
consistent coding style, remove dead code, etc. in separate patches
later that will be easier to review.

v2:
- Add missing include in intel_pxp_irq.c
v3:
- Correct a few indentation errors (Lucas)
- Minor conflict resolution

Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220127234334.4016964-6-matthew.d.roper@intel.com

drm/i915: rename debugfs_gt files

We shouldn't be using debugfs_ namespace for this functionality. Rename
debugfs_gt.[ch] to intel_gt_debugfs.[ch] and then make functions,
defines and structs follow suit.

While at it and since we are renaming the header, sort the includes
alphabetically.

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210918025754.1254705-1-lucas.demarchi@intel.com

drm/i915/xehpsdv: Add maximum sseu limits

Due to the removal of legacy slices and the transition to a
gslice/cslice/mslice/etc. design, we'll internally store all DSS under
"slice0."

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Caz Yokoyama <caz.yokoyama@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210729170008.2836648-10-matthew.d.roper@intel.com

drm/i915/gt: remove GRAPHICS_VER == 10

Replace all remaining handling of GRAPHICS_VER {==,>=} 10 with
{==,>=} 11. With the removal of CNL, there is no platform with graphics
version equals 10.

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210728220326.1578242-5-lucas.demarchi@intel.com

drm/i915/gt: Add remaining conversions to GRAPHICS_VER

For some reason coccinelle misses a few cases in gt with calls to
INTEL_GEN()/IS_GEN(). Do a manual conversion for those.

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210605155356.4183026-3-lucas.demarchi@intel.com

drm/i915: Move sseu debugfs under gt/

In line with what happened for other gt-related features, move the sseu
debugfs files under gt/.

The sseu_status debugfs has also been kept at the top level as we do
have tests that use it; it will be removed once we teach the tests to
look into the new path.

Suggested-by: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Andi Shyti <andi.shyti@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/20200708003952.21831-10-daniele.ceraolospurio@intel.com