1# SPDX-License-Identifier: GPL-2.0-only 2# drm/tegra depends on host1x, so if both drivers are built-in care must be 3# taken to initialize them in the correct order. Link order is the only way 4# to ensure this currently. 5# Similarly, buddy must come first since it is used by other drivers. 6obj-$(CONFIG_GPU_BUDDY) += buddy.o 7obj-y += host1x/ drm/ vga/ tests/ 8obj-$(CONFIG_IMX_IPUV3_CORE) += ipu-v3/ 9obj-$(CONFIG_TRACE_GPU_MEM) += trace/ 10 11# nova-core and nova-drm are built from this Makefile so nova-drm's dependency 12# on nova-core can be expressed as a plain Make prerequisite rather than a 13# recursive sub-make. This is a temporary workaround until the Rust build 14# system supports cross-crate dependencies natively. 15 16obj-$(CONFIG_NOVA_CORE) += nova-core.o 17nova-core-y := nova-core/nova_core.o nova-core/nova_core_exports.o 18 19obj-$(CONFIG_DRM_NOVA) += nova-drm.o 20nova-drm-y := drm/nova/nova.o 21 22# Export Rust symbols from nova-core only if nova-drm actually references them. 23nova-core-export-deps := $(if $(CONFIG_DRM_NOVA),$(obj)/drm/nova/nova.o) 24 25rust_needed_exports = \ 26 { $(if $(strip $(2)),$(NM) -u $(2);,) echo "__DEFINED_RUST_SYMBOLS__"; \ 27 $(NM) -p --defined-only $(1); } | \ 28 awk -v fmt='$(3)' ' \ 29 /^__DEFINED_RUST_SYMBOLS__$$/ { defs = 1; next } \ 30 !defs { if ($$NF ~ /^_R/) needed[$$NF] = 1; next } \ 31 defs && $$2 ~ /(T|R|D|B)/ && $$3 ~ /^_R/ && \ 32 $$3 !~ /_(init|cleanup)_module$$/ && \ 33 $$3 !~ /__(pfx|cfi|odr_asan)/ && \ 34 $$3 in needed { printf fmt, $$3 } \ 35 ' 36 37quiet_cmd_exports = EXPORTS $@ 38 cmd_exports = \ 39 $(call rust_needed_exports,$<,$(nova-core-export-deps),EXPORT_SYMBOL_RUST_GPL(%s);\n) > $@ 40 41$(obj)/nova-core/exports_nova_core_generated.h: $(obj)/nova-core/nova_core.o $(nova-core-export-deps) FORCE 42 $(call if_changed,exports) 43 44targets += nova-core/exports_nova_core_generated.h 45 46$(obj)/nova-core/nova_core_exports.o: $(obj)/nova-core/exports_nova_core_generated.h 47CFLAGS_nova-core/nova_core_exports.o := -I $(objtree)/$(obj)/nova-core 48 49ifdef CONFIG_MODVERSIONS 50# The C export shim declares Rust symbols as `extern int`, so reuse its export 51# list but generate symbol CRCs from the Rust object instead of the shim's DWARF. 52$(obj)/nova-core/nova_core_exports.o: private cmd_gensymtypes_c = \ 53 $(call getexportsymbols,\1) | \ 54 $(objtree)/scripts/gendwarfksyms/gendwarfksyms \ 55 $(if $(KBUILD_GENDWARFKSYMS_STABLE), --stable) \ 56 $(if $(KBUILD_SYMTYPES), --symtypes $(@:.o=.symtypes),) \ 57 $(obj)/nova-core/nova_core.o 58endif 59 60# Output nova-core's crate metadata for use by nova-drm at compile time. 61RUSTFLAGS_nova-core/nova_core.o += \ 62 --emit=metadata=$(objtree)/$(obj)/nova-core/libnova_core.rmeta 63 64# Allow nova-drm to import nova-core's types. 65$(obj)/drm/nova/nova.o: $(obj)/nova-core/nova_core.o 66RUSTFLAGS_drm/nova/nova.o := -L $(objtree)/$(obj)/nova-core --extern nova_core 67