The BIOS FB takeover code wants to read out the PTEs (or at least
one of them) to figure out where the FB is located in memory.
Currently we only do that for systems with LMEMBAR, and we've
open coded the PTE decoding in the display code. Introduce a more
proper abstract interface (intel_ggtt_read_entry()) for this purpose,
and implement it for all platforms.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250313140838.29742-5-ville.syrjala@linux.intel.com
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
Clean up the top level include/drm directory by grouping all the Intel
specific files under a common subdirectory.
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Dave Airlie <airlied@gmail.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Acked-by: Lucas De Marchi <lucas.demarchi@intel.com>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ae224504d99cc6428da6dced9dcde2b7953624ef.1717075103.git.jani.nikula@intel.com
When building with clang's -Wincompatible-function-pointer-types-strict,
the following warnings occur:
drivers/gpu/drm/i915/gt/intel_ggtt_gmch.c:102:23: error: incompatible function pointer types assigning to 'void (*)(struct i915_address_space *, dma_addr_t, u64, unsigned int, u32)' (aka 'void (*)(struct i915_address_space *, unsigned int, unsigned long long, unsigned int, unsigned int)') from 'void (struct i915_address_space *, dma_addr_t, u64, enum i915_cache_level, u32)' (aka 'void (struct i915_address_space *, unsigned int, unsigned long long, enum i915_cache_level, unsigned int)') [-Werror,-Wincompatible-function-pointer-types-strict]
ggtt->vm.insert_page = gmch_ggtt_insert_page;
^ ~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/i915/gt/intel_ggtt_gmch.c:103:26: error: incompatible function pointer types assigning to 'void (*)(struct i915_address_space *, struct i915_vma_resource *, unsigned int, u32)' (aka 'void (*)(struct i915_address_space *, struct i915_vma_resource *, unsigned int, unsigned int)') from 'void (struct i915_address_space *, struct i915_vma_resource *, enum i915_cache_level, u32)' (aka 'void (struct i915_address_space *, struct i915_vma_resource *, enum i915_cache_level, unsigned int)') [-Werror, -Wincompatible-function-pointer-types-strict]
ggtt->vm.insert_entries = gmch_ggtt_insert_entries;
^ ~~~~~~~~~~~~~~~~~~~~~~~~
2 errors generated.
The warning is pointing out that while 'enum i915_cache_level' and
'unsigned int' are ABI compatible, these indirect calls will fail
clang's kernel Control Flow Integrity (kCFI) checks, as the callback's
signature does not exactly match the prototype's signature.
To fix this, replace the cache_level parameter with pat_index, as was
done in other places within i915 where there is no difference between
cache_level and pat_index on certain generations.
Fixes: 9275277d53 ("drm/i915: use pat_index instead of cache_level")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: Fei Yang <fei.yang@intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230530-i915-gt-cache_level-wincompatible-function-pointer-types-strict-v1-2-54501d598229@kernel.org
UAPI Changes:
- (Build-time only, should not have any impact)
drm/i915/uapi: Replace fake flex-array with flexible-array member
"Zero-length arrays as fake flexible arrays are deprecated and we are
moving towards adopting C99 flexible-array members instead."
This is on core kernel request moving towards GCC 13.
Driver Changes:
- Fix context runtime accounting on sysfs fdinfo for heavy workloads (Tvrtko)
- Add support for OA media units on MTL (Umesh)
- Add new workarounds for Meteorlake (Daniele, Radhakrishna, Haridhar)
- Fix sysfs to read actual frequency for MTL and Gen6 and earlier
(Ashutosh)
- Synchronize i915/BIOS on C6 enabling on MTL (Vinay)
- Fix DMAR error noise due to GPU error capture (Andrej)
- Fix forcewake during BAR resize on discrete (Andrzej)
- Flush lmem contents after construction on discrete (Chris)
- Fix GuC loading timeout on systems where IFWI programs low boot
frequency (John)
- Fix race condition UAF in i915_perf_add_config_ioctl (Min)
- Sanitycheck MMIO access early in driver load and during forcewake
(Matt)
- Wakeref fixes for GuC RC error scenario and active VM tracking (Chris)
- Cancel HuC delayed load timer on reset (Daniele)
- Limit double GT reset to pre-MTL (Daniele)
- Use i915 instead of dev_priv insied the file_priv structure (Andi)
- Improve GuC load error reporting (John)
- Simplify VCS/BSD engine selection logic (Tvrtko)
- Perform uc late init after probe error injection (Andrzej)
- Fix format for perf_limit_reasons in debugfs (Vinay)
- Create per-gt debugfs files (Andi)
- Documentation and kerneldoc fixes (Nirmoy, Lee)
- Selftest improvements (Fei, Jonathan)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ZC6APj/feB+jBf2d@jlahtine-mobl.ger.corp.intel.com
The callback will be responsible for setting scratch page PTEs for
specified range. In contrast to clear_range it cannot be optimized to nop.
It will be used by code adding guard pages.
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230308-guard_error_capture-v6-1-1b5f31422563@intel.com
Since commit 52c4d11f1d ("resource: Convert DEFINE_RES_NAMED() to be
compound literal") it's no longer necessary to cast DEFINE_RES_MEM() to
struct resource.
This also fixes sparse warnings "cast from non-scalar" and "cast to
non-scalar".
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230116173422.1858527-2-jani.nikula@intel.com
Re-do what was attempted in commit 7a5c922377 ("drm/i915/gt: Split
intel-gtt functions by arch"). The goal of that commit was to split the
handlers for older hardware that depend on intel-gtt.ko so i915 can
be built for non-x86 archs, after some more patches. Other archs do not
need intel-gtt.ko.
Main issue with the previous approach: it moved all the hooks, including
the gen8, which is used by all platforms gen8 and newer. Re-do the
split moving only the handlers for gen < 6, which are the only ones
calling out to the separate module.
While at it do some minor cleanups:
- Rename the prefix s/gen5_/gmch_/ to be more accurate what platforms
are covered by intel_ggtt_gmch.c
- Remove dead code for gen12 out of needs_idle_maps()
- Remove TODO comment leftover
- Re-order if/else ladder in ggtt_probe_hw() to keep newest platforms
first
v2: Add minor cleanups (Matt Roper)
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Acked-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220617230559.2109427-2-lucas.demarchi@intel.com
