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Message-Id: <20220720193208.1131493-4-mwen@igalia.com>
Date: Wed, 20 Jul 2022 18:32:06 -0100
From: Melissa Wen <mwen@...lia.com>
To: harry.wentland@....com, sunpeng.li@....com,
Rodrigo.Siqueira@....com, alexander.deucher@....com,
christian.koenig@....com, Xinhui.Pan@....com, airlied@...ux.ie,
daniel@...ll.ch
Cc: Guenter Roeck <linux@...ck-us.net>,
Maíra Canal <mairacanal@...eup.net>,
kernel-dev@...lia.com, Melissa Wen <mwen@...lia.com>,
amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 3/5] drm/amd/display: move FPU code on dcn21 clk_mgr
The -mno-gnu-attribute option in dcn21 clk mgr makefile hides a soft vs
hard fp error for powerpc. After removing this flag, we can see some FPU
code remains there:
/gcc-11.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld:
drivers/gpu/drm/amd/amdgpu/../display/dc/dml/display_mode_lib.o uses
hard float,
drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr.o uses
soft float
Therefore, remove the -mno-gnu-attribute flag for dcn21/powerpc and move
FPU-associated code to DML folder.
Signed-off-by: Melissa Wen <mwen@...lia.com>
---
.../gpu/drm/amd/display/dc/clk_mgr/Makefile | 6 -
.../amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c | 234 +----------------
.../amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.h | 7 +
.../drm/amd/display/dc/dml/dcn20/dcn20_fpu.c | 235 ++++++++++++++++++
.../drm/amd/display/dc/dml/dcn20/dcn20_fpu.h | 2 +
5 files changed, 248 insertions(+), 236 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/Makefile b/drivers/gpu/drm/amd/display/dc/clk_mgr/Makefile
index a48453612d10..66dc02c426e9 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/Makefile
@@ -107,12 +107,6 @@ AMD_DISPLAY_FILES += $(AMD_DAL_CLK_MGR_DCN201)
###############################################################################
CLK_MGR_DCN21 = rn_clk_mgr.o rn_clk_mgr_vbios_smu.o
-# prevent build errors regarding soft-float vs hard-float FP ABI tags
-# this code is currently unused on ppc64, as it applies to Renoir APUs only
-ifdef CONFIG_PPC64
-CFLAGS_$(AMDDALPATH)/dc/clk_mgr/dcn21/rn_clk_mgr.o := $(call cc-option,-mno-gnu-attribute)
-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/clk_mgr/dcn21/rn_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c
index cf1b5f354ae9..0202dc682682 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c
@@ -26,10 +26,9 @@
#include "dccg.h"
#include "clk_mgr_internal.h"
-
#include "dcn20/dcn20_clk_mgr.h"
#include "rn_clk_mgr.h"
-
+#include "dml/dcn20/dcn20_fpu.h"
#include "dce100/dce_clk_mgr.h"
#include "rn_clk_mgr_vbios_smu.h"
@@ -45,7 +44,6 @@
/* Constants */
-#define LPDDR_MEM_RETRAIN_LATENCY 4.977 /* Number obtained from LPDDR4 Training Counter Requirement doc */
#define SMU_VER_55_51_0 0x373300 /* SMU Version that is able to set DISPCLK below 100MHz */
/* Macros */
@@ -613,228 +611,6 @@ static struct clk_bw_params rn_bw_params = {
};
-static struct wm_table ddr4_wm_table_gs = {
- .entries = {
- {
- .wm_inst = WM_A,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.72,
- .sr_exit_time_us = 7.09,
- .sr_enter_plus_exit_time_us = 8.14,
- .valid = true,
- },
- {
- .wm_inst = WM_B,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.72,
- .sr_exit_time_us = 10.12,
- .sr_enter_plus_exit_time_us = 11.48,
- .valid = true,
- },
- {
- .wm_inst = WM_C,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.72,
- .sr_exit_time_us = 10.12,
- .sr_enter_plus_exit_time_us = 11.48,
- .valid = true,
- },
- {
- .wm_inst = WM_D,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.72,
- .sr_exit_time_us = 10.12,
- .sr_enter_plus_exit_time_us = 11.48,
- .valid = true,
- },
- }
-};
-
-static struct wm_table lpddr4_wm_table_gs = {
- .entries = {
- {
- .wm_inst = WM_A,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.65333,
- .sr_exit_time_us = 5.32,
- .sr_enter_plus_exit_time_us = 6.38,
- .valid = true,
- },
- {
- .wm_inst = WM_B,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.65333,
- .sr_exit_time_us = 9.82,
- .sr_enter_plus_exit_time_us = 11.196,
- .valid = true,
- },
- {
- .wm_inst = WM_C,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.65333,
- .sr_exit_time_us = 9.89,
- .sr_enter_plus_exit_time_us = 11.24,
- .valid = true,
- },
- {
- .wm_inst = WM_D,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.65333,
- .sr_exit_time_us = 9.748,
- .sr_enter_plus_exit_time_us = 11.102,
- .valid = true,
- },
- }
-};
-
-static struct wm_table lpddr4_wm_table_with_disabled_ppt = {
- .entries = {
- {
- .wm_inst = WM_A,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.65333,
- .sr_exit_time_us = 8.32,
- .sr_enter_plus_exit_time_us = 9.38,
- .valid = true,
- },
- {
- .wm_inst = WM_B,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.65333,
- .sr_exit_time_us = 9.82,
- .sr_enter_plus_exit_time_us = 11.196,
- .valid = true,
- },
- {
- .wm_inst = WM_C,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.65333,
- .sr_exit_time_us = 9.89,
- .sr_enter_plus_exit_time_us = 11.24,
- .valid = true,
- },
- {
- .wm_inst = WM_D,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.65333,
- .sr_exit_time_us = 9.748,
- .sr_enter_plus_exit_time_us = 11.102,
- .valid = true,
- },
- }
-};
-
-static struct wm_table ddr4_wm_table_rn = {
- .entries = {
- {
- .wm_inst = WM_A,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.72,
- .sr_exit_time_us = 11.90,
- .sr_enter_plus_exit_time_us = 12.80,
- .valid = true,
- },
- {
- .wm_inst = WM_B,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.72,
- .sr_exit_time_us = 13.18,
- .sr_enter_plus_exit_time_us = 14.30,
- .valid = true,
- },
- {
- .wm_inst = WM_C,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.72,
- .sr_exit_time_us = 13.18,
- .sr_enter_plus_exit_time_us = 14.30,
- .valid = true,
- },
- {
- .wm_inst = WM_D,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.72,
- .sr_exit_time_us = 13.18,
- .sr_enter_plus_exit_time_us = 14.30,
- .valid = true,
- },
- }
-};
-
-static struct wm_table ddr4_1R_wm_table_rn = {
- .entries = {
- {
- .wm_inst = WM_A,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.72,
- .sr_exit_time_us = 13.90,
- .sr_enter_plus_exit_time_us = 14.80,
- .valid = true,
- },
- {
- .wm_inst = WM_B,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.72,
- .sr_exit_time_us = 13.90,
- .sr_enter_plus_exit_time_us = 14.80,
- .valid = true,
- },
- {
- .wm_inst = WM_C,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.72,
- .sr_exit_time_us = 13.90,
- .sr_enter_plus_exit_time_us = 14.80,
- .valid = true,
- },
- {
- .wm_inst = WM_D,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.72,
- .sr_exit_time_us = 13.90,
- .sr_enter_plus_exit_time_us = 14.80,
- .valid = true,
- },
- }
-};
-
-static struct wm_table lpddr4_wm_table_rn = {
- .entries = {
- {
- .wm_inst = WM_A,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.65333,
- .sr_exit_time_us = 7.32,
- .sr_enter_plus_exit_time_us = 8.38,
- .valid = true,
- },
- {
- .wm_inst = WM_B,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.65333,
- .sr_exit_time_us = 9.82,
- .sr_enter_plus_exit_time_us = 11.196,
- .valid = true,
- },
- {
- .wm_inst = WM_C,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.65333,
- .sr_exit_time_us = 9.89,
- .sr_enter_plus_exit_time_us = 11.24,
- .valid = true,
- },
- {
- .wm_inst = WM_D,
- .wm_type = WM_TYPE_PSTATE_CHG,
- .pstate_latency_us = 11.65333,
- .sr_exit_time_us = 9.748,
- .sr_enter_plus_exit_time_us = 11.102,
- .valid = true,
- },
- }
-};
-
static unsigned int find_socclk_for_voltage(struct dpm_clocks *clock_table, unsigned int voltage)
{
int i;
@@ -914,12 +690,10 @@ static void rn_clk_mgr_helper_populate_bw_params(struct clk_bw_params *bw_params
/*
* WM set D will be re-purposed for memory retraining
*/
- bw_params->wm_table.entries[WM_D].pstate_latency_us = LPDDR_MEM_RETRAIN_LATENCY;
- bw_params->wm_table.entries[WM_D].wm_inst = WM_D;
- bw_params->wm_table.entries[WM_D].wm_type = WM_TYPE_RETRAINING;
- bw_params->wm_table.entries[WM_D].valid = true;
+ DC_FP_START();
+ dcn21_clk_mgr_set_bw_params_wm_table(bw_params);
+ DC_FP_END();
}
-
}
void rn_clk_mgr_construct(
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.h b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.h
index e4322fa5475b..2e088c5171b2 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.h
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.h
@@ -29,6 +29,13 @@
#include "clk_mgr.h"
#include "dm_pp_smu.h"
+extern struct wm_table ddr4_wm_table_gs;
+extern struct wm_table lpddr4_wm_table_gs;
+extern struct wm_table lpddr4_wm_table_with_disabled_ppt;
+extern struct wm_table ddr4_wm_table_rn;
+extern struct wm_table ddr4_1R_wm_table_rn;
+extern struct wm_table lpddr4_wm_table_rn;
+
struct rn_clk_registers {
uint32_t CLK1_CLK0_CURRENT_CNT; /* DPREFCLK */
};
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c
index dc60b835e938..eeeae52fe6fc 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c
@@ -42,6 +42,9 @@
#define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
#endif
+/* Constant */
+#define LPDDR_MEM_RETRAIN_LATENCY 4.977 /* Number obtained from LPDDR4 Training Counter Requirement doc */
+
/**
* DOC: DCN2x FPU manipulation Overview
*
@@ -650,6 +653,228 @@ struct _vcs_dpi_soc_bounding_box_st dcn2_1_soc = {
.num_states = 8
};
+struct wm_table ddr4_wm_table_gs = {
+ .entries = {
+ {
+ .wm_inst = WM_A,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.72,
+ .sr_exit_time_us = 7.09,
+ .sr_enter_plus_exit_time_us = 8.14,
+ .valid = true,
+ },
+ {
+ .wm_inst = WM_B,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.72,
+ .sr_exit_time_us = 10.12,
+ .sr_enter_plus_exit_time_us = 11.48,
+ .valid = true,
+ },
+ {
+ .wm_inst = WM_C,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.72,
+ .sr_exit_time_us = 10.12,
+ .sr_enter_plus_exit_time_us = 11.48,
+ .valid = true,
+ },
+ {
+ .wm_inst = WM_D,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.72,
+ .sr_exit_time_us = 10.12,
+ .sr_enter_plus_exit_time_us = 11.48,
+ .valid = true,
+ },
+ }
+};
+
+struct wm_table lpddr4_wm_table_gs = {
+ .entries = {
+ {
+ .wm_inst = WM_A,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.65333,
+ .sr_exit_time_us = 5.32,
+ .sr_enter_plus_exit_time_us = 6.38,
+ .valid = true,
+ },
+ {
+ .wm_inst = WM_B,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.65333,
+ .sr_exit_time_us = 9.82,
+ .sr_enter_plus_exit_time_us = 11.196,
+ .valid = true,
+ },
+ {
+ .wm_inst = WM_C,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.65333,
+ .sr_exit_time_us = 9.89,
+ .sr_enter_plus_exit_time_us = 11.24,
+ .valid = true,
+ },
+ {
+ .wm_inst = WM_D,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.65333,
+ .sr_exit_time_us = 9.748,
+ .sr_enter_plus_exit_time_us = 11.102,
+ .valid = true,
+ },
+ }
+};
+
+struct wm_table lpddr4_wm_table_with_disabled_ppt = {
+ .entries = {
+ {
+ .wm_inst = WM_A,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.65333,
+ .sr_exit_time_us = 8.32,
+ .sr_enter_plus_exit_time_us = 9.38,
+ .valid = true,
+ },
+ {
+ .wm_inst = WM_B,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.65333,
+ .sr_exit_time_us = 9.82,
+ .sr_enter_plus_exit_time_us = 11.196,
+ .valid = true,
+ },
+ {
+ .wm_inst = WM_C,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.65333,
+ .sr_exit_time_us = 9.89,
+ .sr_enter_plus_exit_time_us = 11.24,
+ .valid = true,
+ },
+ {
+ .wm_inst = WM_D,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.65333,
+ .sr_exit_time_us = 9.748,
+ .sr_enter_plus_exit_time_us = 11.102,
+ .valid = true,
+ },
+ }
+};
+
+struct wm_table ddr4_wm_table_rn = {
+ .entries = {
+ {
+ .wm_inst = WM_A,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.72,
+ .sr_exit_time_us = 11.90,
+ .sr_enter_plus_exit_time_us = 12.80,
+ .valid = true,
+ },
+ {
+ .wm_inst = WM_B,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.72,
+ .sr_exit_time_us = 13.18,
+ .sr_enter_plus_exit_time_us = 14.30,
+ .valid = true,
+ },
+ {
+ .wm_inst = WM_C,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.72,
+ .sr_exit_time_us = 13.18,
+ .sr_enter_plus_exit_time_us = 14.30,
+ .valid = true,
+ },
+ {
+ .wm_inst = WM_D,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.72,
+ .sr_exit_time_us = 13.18,
+ .sr_enter_plus_exit_time_us = 14.30,
+ .valid = true,
+ },
+ }
+};
+
+struct wm_table ddr4_1R_wm_table_rn = {
+ .entries = {
+ {
+ .wm_inst = WM_A,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.72,
+ .sr_exit_time_us = 13.90,
+ .sr_enter_plus_exit_time_us = 14.80,
+ .valid = true,
+ },
+ {
+ .wm_inst = WM_B,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.72,
+ .sr_exit_time_us = 13.90,
+ .sr_enter_plus_exit_time_us = 14.80,
+ .valid = true,
+ },
+ {
+ .wm_inst = WM_C,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.72,
+ .sr_exit_time_us = 13.90,
+ .sr_enter_plus_exit_time_us = 14.80,
+ .valid = true,
+ },
+ {
+ .wm_inst = WM_D,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.72,
+ .sr_exit_time_us = 13.90,
+ .sr_enter_plus_exit_time_us = 14.80,
+ .valid = true,
+ },
+ }
+};
+
+struct wm_table lpddr4_wm_table_rn = {
+ .entries = {
+ {
+ .wm_inst = WM_A,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.65333,
+ .sr_exit_time_us = 7.32,
+ .sr_enter_plus_exit_time_us = 8.38,
+ .valid = true,
+ },
+ {
+ .wm_inst = WM_B,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.65333,
+ .sr_exit_time_us = 9.82,
+ .sr_enter_plus_exit_time_us = 11.196,
+ .valid = true,
+ },
+ {
+ .wm_inst = WM_C,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.65333,
+ .sr_exit_time_us = 9.89,
+ .sr_enter_plus_exit_time_us = 11.24,
+ .valid = true,
+ },
+ {
+ .wm_inst = WM_D,
+ .wm_type = WM_TYPE_PSTATE_CHG,
+ .pstate_latency_us = 11.65333,
+ .sr_exit_time_us = 9.748,
+ .sr_enter_plus_exit_time_us = 11.102,
+ .valid = true,
+ },
+ }
+};
+
void dcn20_populate_dml_writeback_from_context(struct dc *dc,
struct resource_context *res_ctx,
display_e2e_pipe_params_st *pipes)
@@ -2068,3 +2293,13 @@ void dcn21_update_bw_bounding_box(struct dc *dc, struct clk_bw_params *bw_params
dml_init_instance(&dc->dml, &dcn2_1_soc, &dcn2_1_ip, DML_PROJECT_DCN21);
}
+
+void dcn21_clk_mgr_set_bw_params_wm_table(struct clk_bw_params *bw_params)
+{
+ dc_assert_fp_enabled();
+
+ bw_params->wm_table.entries[WM_D].pstate_latency_us = LPDDR_MEM_RETRAIN_LATENCY;
+ bw_params->wm_table.entries[WM_D].wm_inst = WM_D;
+ bw_params->wm_table.entries[WM_D].wm_type = WM_TYPE_RETRAINING;
+ bw_params->wm_table.entries[WM_D].valid = true;
+}
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.h b/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.h
index aa892193e485..a6e1ad0f38e9 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.h
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.h
@@ -82,4 +82,6 @@ bool dcn21_validate_bandwidth_fp(struct dc *dc,
bool fast_validate);
void dcn21_update_bw_bounding_box(struct dc *dc, struct clk_bw_params *bw_params);
+void dcn21_clk_mgr_set_bw_params_wm_table(struct clk_bw_params *bw_params);
+
#endif /* __DCN20_FPU_H__ */
--
2.35.1
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