forked from Minki/linux
9d1305ef80
An idea for extending uABI inspired by Vulkan's extension chains.
Instead of expanding the data struct for each ioctl every time we need
to add a new feature, define an extension chain instead. As we add
optional interfaces to control the ioctl, we define a new extension
struct that can be linked into the ioctl data only when required by the
user. The key advantage being able to ignore large control structs for
optional interfaces/extensions, while being able to process them in a
consistent manner.
In comparison to other extensible ioctls, the key difference is the
use of a linked chain of extension structs vs an array of tagged
pointers. For example,
struct drm_amdgpu_cs_chunk {
__u32 chunk_id;
__u32 length_dw;
__u64 chunk_data;
};
struct drm_amdgpu_cs_in {
__u32 ctx_id;
__u32 bo_list_handle;
__u32 num_chunks;
__u32 _pad;
__u64 chunks;
};
allows userspace to pass in array of pointers to extension structs, but
must therefore keep constructing that array along side the command stream.
In dynamic situations like that, a linked list is preferred and does not
similar from extra cache line misses as the extension structs themselves
must still be loaded separate to the chunks array.
v2: Apply the tail call optimisation directly to nip the worry of stack
overflow in the bud.
v3: Defend against recursion.
v4: Fixup local types to match new uabi
Opens:
- do we include the result as an out-field in each chain?
struct i915_user_extension {
__u64 next_extension;
__u64 name;
__s32 result;
__u32 mbz; /* reserved for future use */
};
* Undecided, so provision some room for future expansion.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190322092325.5883-1-chris@chris-wilson.co.uk
219 lines
5.7 KiB
Makefile
219 lines
5.7 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for the drm device driver. This driver provides support for the
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# Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
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# Add a set of useful warning flags and enable -Werror for CI to prevent
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# trivial mistakes from creeping in. We have to do this piecemeal as we reject
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# any patch that isn't warning clean, so turning on -Wall -Wextra (or W=1) we
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# need to filter out dubious warnings. Still it is our interest
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# to keep running locally with W=1 C=1 until we are completely clean.
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#
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# Note the danger in using -Wall -Wextra is that when CI updates gcc we
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# will most likely get a sudden build breakage... Hopefully we will fix
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# new warnings before CI updates!
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subdir-ccflags-y := -Wall -Wextra
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subdir-ccflags-y += $(call cc-disable-warning, unused-parameter)
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subdir-ccflags-y += $(call cc-disable-warning, type-limits)
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subdir-ccflags-y += $(call cc-disable-warning, missing-field-initializers)
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subdir-ccflags-y += $(call cc-disable-warning, implicit-fallthrough)
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subdir-ccflags-y += $(call cc-disable-warning, unused-but-set-variable)
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# clang warnings
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subdir-ccflags-y += $(call cc-disable-warning, sign-compare)
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subdir-ccflags-y += $(call cc-disable-warning, sometimes-uninitialized)
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subdir-ccflags-y += $(call cc-disable-warning, initializer-overrides)
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subdir-ccflags-y += $(call cc-disable-warning, uninitialized)
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subdir-ccflags-$(CONFIG_DRM_I915_WERROR) += -Werror
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# Fine grained warnings disable
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CFLAGS_i915_pci.o = $(call cc-disable-warning, override-init)
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CFLAGS_intel_fbdev.o = $(call cc-disable-warning, override-init)
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subdir-ccflags-y += \
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$(call as-instr,movntdqa (%eax)$(comma)%xmm0,-DCONFIG_AS_MOVNTDQA)
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# Please keep these build lists sorted!
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# core driver code
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i915-y := i915_drv.o \
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i915_irq.o \
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i915_memcpy.o \
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i915_mm.o \
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i915_params.o \
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i915_pci.o \
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i915_reset.o \
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i915_suspend.o \
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i915_sw_fence.o \
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i915_syncmap.o \
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i915_sysfs.o \
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i915_user_extensions.o \
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intel_csr.o \
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intel_device_info.o \
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intel_pm.o \
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intel_runtime_pm.o \
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intel_workarounds.o
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i915-$(CONFIG_COMPAT) += i915_ioc32.o
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i915-$(CONFIG_DEBUG_FS) += i915_debugfs.o intel_pipe_crc.o
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i915-$(CONFIG_PERF_EVENTS) += i915_pmu.o
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# Test the headers are compilable as standalone units
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i915-$(CONFIG_DRM_I915_WERROR) += \
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test_i915_active_types_standalone.o \
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test_i915_gem_context_types_standalone.o \
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test_i915_timeline_types_standalone.o \
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test_intel_context_types_standalone.o \
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test_intel_engine_types_standalone.o \
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test_intel_workarounds_types_standalone.o
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# GEM code
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i915-y += \
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i915_active.o \
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i915_cmd_parser.o \
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i915_gem_batch_pool.o \
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i915_gem_clflush.o \
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i915_gem_context.o \
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i915_gem_dmabuf.o \
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i915_gem_evict.o \
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i915_gem_execbuffer.o \
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i915_gem_fence_reg.o \
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i915_gem_gtt.o \
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i915_gem_internal.o \
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i915_gem.o \
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i915_gem_object.o \
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i915_gem_render_state.o \
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i915_gem_shrinker.o \
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i915_gem_stolen.o \
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i915_gem_tiling.o \
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i915_gem_userptr.o \
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i915_gemfs.o \
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i915_globals.o \
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i915_query.o \
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i915_request.o \
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i915_scheduler.o \
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i915_timeline.o \
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i915_trace_points.o \
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i915_vma.o \
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intel_breadcrumbs.o \
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intel_context.o \
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intel_engine_cs.o \
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intel_hangcheck.o \
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intel_lrc.o \
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intel_mocs.o \
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intel_ringbuffer.o \
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intel_uncore.o \
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intel_wopcm.o
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# general-purpose microcontroller (GuC) support
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i915-y += intel_uc.o \
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intel_uc_fw.o \
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intel_guc.o \
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intel_guc_ads.o \
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intel_guc_ct.o \
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intel_guc_fw.o \
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intel_guc_log.o \
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intel_guc_submission.o \
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intel_huc.o \
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intel_huc_fw.o
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# autogenerated null render state
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i915-y += intel_renderstate_gen6.o \
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intel_renderstate_gen7.o \
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intel_renderstate_gen8.o \
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intel_renderstate_gen9.o
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# modesetting core code
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i915-y += intel_audio.o \
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intel_atomic.o \
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intel_atomic_plane.o \
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intel_bios.o \
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intel_cdclk.o \
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intel_color.o \
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intel_combo_phy.o \
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intel_connector.o \
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intel_display.o \
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intel_dpio_phy.o \
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intel_dpll_mgr.o \
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intel_fbc.o \
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intel_fifo_underrun.o \
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intel_frontbuffer.o \
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intel_hdcp.o \
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intel_hotplug.o \
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intel_overlay.o \
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intel_psr.o \
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intel_quirks.o \
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intel_sideband.o \
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intel_sprite.o
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i915-$(CONFIG_ACPI) += intel_acpi.o intel_opregion.o
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i915-$(CONFIG_DRM_FBDEV_EMULATION) += intel_fbdev.o
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# modesetting output/encoder code
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i915-y += dvo_ch7017.o \
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dvo_ch7xxx.o \
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dvo_ivch.o \
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dvo_ns2501.o \
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dvo_sil164.o \
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dvo_tfp410.o \
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icl_dsi.o \
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intel_crt.o \
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intel_ddi.o \
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intel_dp_aux_backlight.o \
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intel_dp_link_training.o \
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intel_dp_mst.o \
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intel_dp.o \
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intel_dsi.o \
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intel_dsi_dcs_backlight.o \
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intel_dsi_vbt.o \
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intel_dvo.o \
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intel_hdmi.o \
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intel_i2c.o \
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intel_lspcon.o \
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intel_lvds.o \
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intel_panel.o \
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intel_sdvo.o \
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intel_tv.o \
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vlv_dsi.o \
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vlv_dsi_pll.o \
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intel_vdsc.o
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# Post-mortem debug and GPU hang state capture
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i915-$(CONFIG_DRM_I915_CAPTURE_ERROR) += i915_gpu_error.o
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i915-$(CONFIG_DRM_I915_SELFTEST) += \
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selftests/i915_random.o \
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selftests/i915_selftest.o \
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selftests/igt_flush_test.o \
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selftests/igt_live_test.o \
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selftests/igt_reset.o \
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selftests/igt_spinner.o
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# virtual gpu code
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i915-y += i915_vgpu.o
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# perf code
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i915-y += i915_perf.o \
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i915_oa_hsw.o \
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i915_oa_bdw.o \
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i915_oa_chv.o \
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i915_oa_sklgt2.o \
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i915_oa_sklgt3.o \
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i915_oa_sklgt4.o \
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i915_oa_bxt.o \
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i915_oa_kblgt2.o \
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i915_oa_kblgt3.o \
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i915_oa_glk.o \
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i915_oa_cflgt2.o \
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i915_oa_cflgt3.o \
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i915_oa_cnl.o \
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i915_oa_icl.o
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ifeq ($(CONFIG_DRM_I915_GVT),y)
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i915-y += intel_gvt.o
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include $(src)/gvt/Makefile
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endif
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# LPE Audio for VLV and CHT
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i915-y += intel_lpe_audio.o
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obj-$(CONFIG_DRM_I915) += i915.o
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obj-$(CONFIG_DRM_I915_GVT_KVMGT) += gvt/kvmgt.o
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