From c38d444e44badc557cf29fdfdfb823604890ccfa Mon Sep 17 00:00:00 2001 From: Daniel Kolesa Date: Sat, 8 Aug 2020 22:44:58 +0200 Subject: [PATCH] drm/amd/display: add DCN support for aarch64 This adds ARM64 support into the DCN. This mainly enables support for Navi graphics cards. The dcn10 changes haven't been tested, since I don't have the relevant hardware available, but there is no way to conditionally disable them, so I've done them anyway. Signed-off-by: Daniel Kolesa Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/Kconfig | 2 +- drivers/gpu/drm/amd/display/dc/calcs/Makefile | 7 ++ .../gpu/drm/amd/display/dc/clk_mgr/Makefile | 7 ++ drivers/gpu/drm/amd/display/dc/dcn10/Makefile | 7 ++ .../drm/amd/display/dc/dcn10/dcn10_resource.c | 81 ++++++++++++------- drivers/gpu/drm/amd/display/dc/dcn20/Makefile | 4 + drivers/gpu/drm/amd/display/dc/dcn21/Makefile | 4 + drivers/gpu/drm/amd/display/dc/dml/Makefile | 13 +++ drivers/gpu/drm/amd/display/dc/dsc/Makefile | 5 ++ drivers/gpu/drm/amd/display/dc/os_types.h | 4 + 10 files changed, 102 insertions(+), 32 deletions(-) diff --git a/drivers/gpu/drm/amd/display/Kconfig b/drivers/gpu/drm/amd/display/Kconfig index 77569097a480..f24abf428534 100644 --- a/drivers/gpu/drm/amd/display/Kconfig +++ b/drivers/gpu/drm/amd/display/Kconfig @@ -6,7 +6,7 @@ config DRM_AMD_DC bool "AMD DC - Enable new display engine" default y select SND_HDA_COMPONENT if SND_HDA_CORE - select DRM_AMD_DC_DCN if (X86 || PPC64) && !(KCOV_INSTRUMENT_ALL && KCOV_ENABLE_COMPARISONS) + select DRM_AMD_DC_DCN if (X86 || PPC64 || (ARM64 && KERNEL_MODE_NEON)) && !(KCOV_INSTRUMENT_ALL && KCOV_ENABLE_COMPARISONS) help Choose this option if you want to use the new display engine support for AMDGPU. This adds required support for Vega and diff --git a/drivers/gpu/drm/amd/display/dc/calcs/Makefile b/drivers/gpu/drm/amd/display/dc/calcs/Makefile index 4674aca8f206..64f515d74410 100644 --- a/drivers/gpu/drm/amd/display/dc/calcs/Makefile +++ b/drivers/gpu/drm/amd/display/dc/calcs/Makefile @@ -33,6 +33,10 @@ ifdef CONFIG_PPC64 calcs_ccflags := -mhard-float -maltivec endif +ifdef CONFIG_ARM64 +calcs_rcflags := -mgeneral-regs-only +endif + ifdef CONFIG_CC_IS_GCC ifeq ($(call cc-ifversion, -lt, 0701, y), y) IS_OLD_GCC = 1 @@ -53,6 +57,9 @@ endif CFLAGS_$(AMDDALPATH)/dc/calcs/dcn_calcs.o := $(calcs_ccflags) CFLAGS_$(AMDDALPATH)/dc/calcs/dcn_calc_auto.o := $(calcs_ccflags) CFLAGS_$(AMDDALPATH)/dc/calcs/dcn_calc_math.o := $(calcs_ccflags) -Wno-tautological-compare +CFLAGS_REMOVE_$(AMDDALPATH)/dc/calcs/dcn_calcs.o := $(calcs_rcflags) +CFLAGS_REMOVE_$(AMDDALPATH)/dc/calcs/dcn_calc_auto.o := $(calcs_rcflags) +CFLAGS_REMOVE_$(AMDDALPATH)/dc/calcs/dcn_calc_math.o := $(calcs_rcflags) BW_CALCS = dce_calcs.o bw_fixed.o custom_float.o diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/Makefile b/drivers/gpu/drm/amd/display/dc/clk_mgr/Makefile index 52b1ce775a1e..1a495759a034 100644 --- a/drivers/gpu/drm/amd/display/dc/clk_mgr/Makefile +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/Makefile @@ -104,6 +104,13 @@ ifdef CONFIG_PPC64 CFLAGS_$(AMDDALPATH)/dc/clk_mgr/dcn21/rn_clk_mgr.o := $(call cc-option,-mno-gnu-attribute) endif +# prevent build errors: +# ...: '-mgeneral-regs-only' is incompatible with the use of floating-point types +# this file is unused on arm64, just like on ppc64 +ifdef CONFIG_ARM64 +CFLAGS_REMOVE_$(AMDDALPATH)/dc/clk_mgr/dcn21/rn_clk_mgr.o := -mgeneral-regs-only +endif + AMD_DAL_CLK_MGR_DCN21 = $(addprefix $(AMDDALPATH)/dc/clk_mgr/dcn21/,$(CLK_MGR_DCN21)) AMD_DISPLAY_FILES += $(AMD_DAL_CLK_MGR_DCN21) diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/Makefile b/drivers/gpu/drm/amd/display/dc/dcn10/Makefile index 62ad1a11bff9..733e6e6e43bd 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/Makefile +++ b/drivers/gpu/drm/amd/display/dc/dcn10/Makefile @@ -31,4 +31,11 @@ DCN10 = dcn10_init.o dcn10_resource.o dcn10_ipp.o dcn10_hw_sequencer.o \ AMD_DAL_DCN10 = $(addprefix $(AMDDALPATH)/dc/dcn10/,$(DCN10)) +# fix: +# ...: '-mgeneral-regs-only' is incompatible with the use of floating-point types +# aarch64 does not support soft-float, so use hard-float and handle this in code +ifdef CONFIG_ARM64 +CFLAGS_REMOVE_$(AMDDALPATH)/dc/dcn10/dcn10_resource.o := -mgeneral-regs-only +endif + AMD_DISPLAY_FILES += $(AMD_DAL_DCN10) diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c index 17d5cb422025..07571f84e0f8 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c @@ -1331,6 +1331,47 @@ static uint32_t read_pipe_fuses(struct dc_context *ctx) return value; } +/* + * Some architectures don't support soft-float (e.g. aarch64), on those + * this function has to be called with hardfloat enabled, make sure not + * to inline it so whatever fp stuff is done stays inside + */ +static noinline void dcn10_resource_construct_fp( + struct dc *dc) +{ + if (dc->ctx->dce_version == DCN_VERSION_1_01) { + struct dcn_soc_bounding_box *dcn_soc = dc->dcn_soc; + struct dcn_ip_params *dcn_ip = dc->dcn_ip; + struct display_mode_lib *dml = &dc->dml; + + dml->ip.max_num_dpp = 3; + /* TODO how to handle 23.84? */ + dcn_soc->dram_clock_change_latency = 23; + dcn_ip->max_num_dpp = 3; + } + if (ASICREV_IS_RV1_F0(dc->ctx->asic_id.hw_internal_rev)) { + dc->dcn_soc->urgent_latency = 3; + dc->debug.disable_dmcu = true; + dc->dcn_soc->fabric_and_dram_bandwidth_vmax0p9 = 41.60f; + } + + + dc->dcn_soc->number_of_channels = dc->ctx->asic_id.vram_width / ddr4_dram_width; + ASSERT(dc->dcn_soc->number_of_channels < 3); + if (dc->dcn_soc->number_of_channels == 0)/*old sbios bug*/ + dc->dcn_soc->number_of_channels = 2; + + if (dc->dcn_soc->number_of_channels == 1) { + dc->dcn_soc->fabric_and_dram_bandwidth_vmax0p9 = 19.2f; + dc->dcn_soc->fabric_and_dram_bandwidth_vnom0p8 = 17.066f; + dc->dcn_soc->fabric_and_dram_bandwidth_vmid0p72 = 14.933f; + dc->dcn_soc->fabric_and_dram_bandwidth_vmin0p65 = 12.8f; + if (ASICREV_IS_RV1_F0(dc->ctx->asic_id.hw_internal_rev)) { + dc->dcn_soc->fabric_and_dram_bandwidth_vmax0p9 = 20.80f; + } + } +} + static bool dcn10_resource_construct( uint8_t num_virtual_links, struct dc *dc, @@ -1482,37 +1523,15 @@ static bool dcn10_resource_construct( memcpy(dc->dcn_ip, &dcn10_ip_defaults, sizeof(dcn10_ip_defaults)); memcpy(dc->dcn_soc, &dcn10_soc_defaults, sizeof(dcn10_soc_defaults)); - if (dc->ctx->dce_version == DCN_VERSION_1_01) { - struct dcn_soc_bounding_box *dcn_soc = dc->dcn_soc; - struct dcn_ip_params *dcn_ip = dc->dcn_ip; - struct display_mode_lib *dml = &dc->dml; - - dml->ip.max_num_dpp = 3; - /* TODO how to handle 23.84? */ - dcn_soc->dram_clock_change_latency = 23; - dcn_ip->max_num_dpp = 3; - } - if (ASICREV_IS_RV1_F0(dc->ctx->asic_id.hw_internal_rev)) { - dc->dcn_soc->urgent_latency = 3; - dc->debug.disable_dmcu = true; - dc->dcn_soc->fabric_and_dram_bandwidth_vmax0p9 = 41.60f; - } - - - dc->dcn_soc->number_of_channels = dc->ctx->asic_id.vram_width / ddr4_dram_width; - ASSERT(dc->dcn_soc->number_of_channels < 3); - if (dc->dcn_soc->number_of_channels == 0)/*old sbios bug*/ - dc->dcn_soc->number_of_channels = 2; - - if (dc->dcn_soc->number_of_channels == 1) { - dc->dcn_soc->fabric_and_dram_bandwidth_vmax0p9 = 19.2f; - dc->dcn_soc->fabric_and_dram_bandwidth_vnom0p8 = 17.066f; - dc->dcn_soc->fabric_and_dram_bandwidth_vmid0p72 = 14.933f; - dc->dcn_soc->fabric_and_dram_bandwidth_vmin0p65 = 12.8f; - if (ASICREV_IS_RV1_F0(dc->ctx->asic_id.hw_internal_rev)) { - dc->dcn_soc->fabric_and_dram_bandwidth_vmax0p9 = 20.80f; - } - } +#if defined(CONFIG_ARM64) + /* Aarch64 does not support -msoft-float/-mfloat-abi=soft */ + DC_FP_START(); + dcn10_resource_construct_fp(dc); + DC_FP_END(); +#else + /* Other architectures we build for build this with soft-float */ + dcn10_resource_construct_fp(dc); +#endif pool->base.pp_smu = dcn10_pp_smu_create(ctx); diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/Makefile b/drivers/gpu/drm/amd/display/dc/dcn20/Makefile index 5fcaf78334ff..624cb1341ef1 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/Makefile +++ b/drivers/gpu/drm/amd/display/dc/dcn20/Makefile @@ -17,6 +17,10 @@ ifdef CONFIG_PPC64 CFLAGS_$(AMDDALPATH)/dc/dcn20/dcn20_resource.o := -mhard-float -maltivec endif +ifdef CONFIG_ARM64 +CFLAGS_REMOVE_$(AMDDALPATH)/dc/dcn20/dcn20_resource.o := -mgeneral-regs-only +endif + ifdef CONFIG_CC_IS_GCC ifeq ($(call cc-ifversion, -lt, 0701, y), y) IS_OLD_GCC = 1 diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/Makefile b/drivers/gpu/drm/amd/display/dc/dcn21/Makefile index 07684d3e375a..51a2f3d4c194 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn21/Makefile +++ b/drivers/gpu/drm/amd/display/dc/dcn21/Makefile @@ -13,6 +13,10 @@ ifdef CONFIG_PPC64 CFLAGS_$(AMDDALPATH)/dc/dcn21/dcn21_resource.o := -mhard-float -maltivec endif +ifdef CONFIG_ARM64 +CFLAGS_REMOVE_$(AMDDALPATH)/dc/dcn21/dcn21_resource.o := -mgeneral-regs-only +endif + ifdef CONFIG_CC_IS_GCC ifeq ($(call cc-ifversion, -lt, 0701, y), y) IS_OLD_GCC = 1 diff --git a/drivers/gpu/drm/amd/display/dc/dml/Makefile b/drivers/gpu/drm/amd/display/dc/dml/Makefile index 417331438c30..dbc7e2abe379 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/Makefile +++ b/drivers/gpu/drm/amd/display/dc/dml/Makefile @@ -33,6 +33,10 @@ ifdef CONFIG_PPC64 dml_ccflags := -mhard-float -maltivec endif +ifdef CONFIG_ARM64 +dml_rcflags := -mgeneral-regs-only +endif + ifdef CONFIG_CC_IS_GCC ifeq ($(call cc-ifversion, -lt, 0701, y), y) IS_OLD_GCC = 1 @@ -60,6 +64,13 @@ CFLAGS_$(AMDDALPATH)/dc/dml/dcn20/display_mode_vba_20v2.o := $(dml_ccflags) CFLAGS_$(AMDDALPATH)/dc/dml/dcn20/display_rq_dlg_calc_20v2.o := $(dml_ccflags) CFLAGS_$(AMDDALPATH)/dc/dml/dcn21/display_mode_vba_21.o := $(dml_ccflags) CFLAGS_$(AMDDALPATH)/dc/dml/dcn21/display_rq_dlg_calc_21.o := $(dml_ccflags) +CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml/display_mode_vba.o := $(dml_rcflags) +CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml/dcn20/display_mode_vba_20.o := $(dml_rcflags) +CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml/dcn20/display_rq_dlg_calc_20.o := $(dml_rcflags) +CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml/dcn20/display_mode_vba_20v2.o := $(dml_rcflags) +CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml/dcn20/display_rq_dlg_calc_20v2.o := $(dml_rcflags) +CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml/dcn21/display_mode_vba_21.o := $(dml_rcflags) +CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml/dcn21/display_rq_dlg_calc_21.o := $(dml_rcflags) endif ifdef CONFIG_DRM_AMD_DC_DCN3_0 CFLAGS_$(AMDDALPATH)/dc/dml/dcn30/display_mode_vba_30.o := $(dml_ccflags) -Wframe-larger-than=2048 @@ -67,6 +78,8 @@ CFLAGS_$(AMDDALPATH)/dc/dml/dcn30/display_rq_dlg_calc_30.o := $(dml_ccflags) endif CFLAGS_$(AMDDALPATH)/dc/dml/dml1_display_rq_dlg_calc.o := $(dml_ccflags) CFLAGS_$(AMDDALPATH)/dc/dml/display_rq_dlg_helpers.o := $(dml_ccflags) +CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml/dml1_display_rq_dlg_calc.o := $(dml_rcflags) +CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml/display_rq_dlg_helpers.o := $(dml_rcflags) DML = display_mode_lib.o display_rq_dlg_helpers.o dml1_display_rq_dlg_calc.o \ diff --git a/drivers/gpu/drm/amd/display/dc/dsc/Makefile b/drivers/gpu/drm/amd/display/dc/dsc/Makefile index ea29cf95d470..f2624a1156e5 100644 --- a/drivers/gpu/drm/amd/display/dc/dsc/Makefile +++ b/drivers/gpu/drm/amd/display/dc/dsc/Makefile @@ -10,6 +10,10 @@ ifdef CONFIG_PPC64 dsc_ccflags := -mhard-float -maltivec endif +ifdef CONFIG_ARM64 +dsc_rcflags := -mgeneral-regs-only +endif + ifdef CONFIG_CC_IS_GCC ifeq ($(call cc-ifversion, -lt, 0701, y), y) IS_OLD_GCC = 1 @@ -28,6 +32,7 @@ endif endif CFLAGS_$(AMDDALPATH)/dc/dsc/rc_calc.o := $(dsc_ccflags) +CFLAGS_REMOVE_$(AMDDALPATH)/dc/dsc/rc_calc.o := $(dsc_rcflags) DSC = dc_dsc.o rc_calc.o rc_calc_dpi.o diff --git a/drivers/gpu/drm/amd/display/dc/os_types.h b/drivers/gpu/drm/amd/display/dc/os_types.h index c3bbfe397e8d..330acaaed79a 100644 --- a/drivers/gpu/drm/amd/display/dc/os_types.h +++ b/drivers/gpu/drm/amd/display/dc/os_types.h @@ -55,6 +55,10 @@ #include #define DC_FP_START() kernel_fpu_begin() #define DC_FP_END() kernel_fpu_end() +#elif defined(CONFIG_ARM64) +#include +#define DC_FP_START() kernel_neon_begin() +#define DC_FP_END() kernel_neon_end() #elif defined(CONFIG_PPC64) #include #include