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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 <daniel@octaforge.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Daniel Kolesa 2020-08-08 22:44:58 +02:00 committed by Alex Deucher
parent fbd7cda0e6
commit c38d444e44
10 changed files with 102 additions and 32 deletions
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2
drivers/gpu/drm/amd/display/Kconfig
View File

@ -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

7
drivers/gpu/drm/amd/display/dc/calcs/Makefile
View File

@ -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

7
drivers/gpu/drm/amd/display/dc/clk_mgr/Makefile
View File

@ -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)

7
drivers/gpu/drm/amd/display/dc/dcn10/Makefile
View File

@ -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)

81
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_resource.c
View File

@ -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);

4
drivers/gpu/drm/amd/display/dc/dcn20/Makefile
View File

@ -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

4
drivers/gpu/drm/amd/display/dc/dcn21/Makefile
View File

@ -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

13
drivers/gpu/drm/amd/display/dc/dml/Makefile
View File

@ -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 \

5
drivers/gpu/drm/amd/display/dc/dsc/Makefile
View File

@ -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

4
drivers/gpu/drm/amd/display/dc/os_types.h
View File

@ -55,6 +55,10 @@
#include <asm/fpu/api.h>
#define DC_FP_START() kernel_fpu_begin()
#define DC_FP_END() kernel_fpu_end()
#elif defined(CONFIG_ARM64)
#include <asm/neon.h>
#define DC_FP_START() kernel_neon_begin()
#define DC_FP_END() kernel_neon_end()
#elif defined(CONFIG_PPC64)
#include <asm/switch_to.h>
#include <asm/cputable.h>