From: Dillon Varone <dillon.varone@xxxxxxx>
[WHY&HOW]
Adds support for P-State stall timeout detection in DCHUBBUB.
Reviewed-by: Alvin Lee <alvin.lee2@xxxxxxx>
Signed-off-by: Dillon Varone <dillon.varone@xxxxxxx>
Signed-off-by: Tom Chung <chiahsuan.chung@xxxxxxx>
---
.../dc/dml2/dml21/inc/dml_top_dchub_registers.h | 1 +
.../dml2/dml21/src/dml2_core/dml2_core_dcn4_calcs.c | 3 +++
.../drm/amd/display/dc/hubbub/dcn10/dcn10_hubbub.h | 9 ++++++++-
.../drm/amd/display/dc/hubbub/dcn401/dcn401_hubbub.c | 12 ++++++++++++
.../drm/amd/display/dc/hubbub/dcn401/dcn401_hubbub.h | 8 ++++++--
.../drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c | 5 +++++
drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h | 1 +
.../amd/display/dc/resource/dcn401/dcn401_resource.h | 4 +++-
8 files changed, 39 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml21/inc/dml_top_dchub_registers.h b/drivers/gpu/drm/amd/display/dc/dml2/dml21/inc/dml_top_dchub_registers.h
index 83fc15bf13cf..25b607e7b726 100644
--- a/drivers/gpu/drm/amd/display/dc/dml2/dml21/inc/dml_top_dchub_registers.h
+++ b/drivers/gpu/drm/amd/display/dc/dml2/dml21/inc/dml_top_dchub_registers.h
@@ -88,6 +88,7 @@ struct dml2_display_arb_regs {
uint32_t sdpif_request_rate_limit;
uint32_t allow_sdpif_rate_limit_when_cstate_req;
uint32_t dcfclk_deep_sleep_hysteresis;
+ uint32_t pstate_stall_threshold;
};
struct dml2_cursor_dlg_regs{
diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_core/dml2_core_dcn4_calcs.c b/drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_core/dml2_core_dcn4_calcs.c
index 3ea54fd52e46..92e43a1e4dd4 100644
--- a/drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_core/dml2_core_dcn4_calcs.c
+++ b/drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_core/dml2_core_dcn4_calcs.c
@@ -12236,6 +12236,8 @@ static void rq_dlg_get_dlg_reg(
static void rq_dlg_get_arb_params(const struct dml2_display_cfg *display_cfg, const struct dml2_core_internal_display_mode_lib *mode_lib, struct dml2_display_arb_regs *arb_param)
{
+ double refclk_freq_in_mhz = (display_cfg->overrides.hw.dlg_ref_clk_mhz > 0) ? (double)display_cfg->overrides.hw.dlg_ref_clk_mhz : mode_lib->soc.dchub_refclk_mhz;
+
arb_param->max_req_outstanding = mode_lib->soc.max_outstanding_reqs;
arb_param->min_req_outstanding = mode_lib->soc.max_outstanding_reqs; // turn off the sat level feature if this set to max
arb_param->sdpif_request_rate_limit = (3 * mode_lib->ip.words_per_channel * mode_lib->soc.clk_table.dram_config.channel_count) / 4;
@@ -12247,6 +12249,7 @@ static void rq_dlg_get_arb_params(const struct dml2_display_cfg *display_cfg, co
arb_param->compbuf_size = mode_lib->mp.CompressedBufferSizeInkByte / mode_lib->ip.compressed_buffer_segment_size_in_kbytes;
arb_param->allow_sdpif_rate_limit_when_cstate_req = dml_get_hw_debug5(mode_lib);
arb_param->dcfclk_deep_sleep_hysteresis = dml_get_dcfclk_deep_sleep_hysteresis(mode_lib);
+ arb_param->pstate_stall_threshold = (unsigned int)(mode_lib->ip_caps.fams2.max_allow_delay_us * refclk_freq_in_mhz);
#ifdef __DML_VBA_DEBUG__
dml2_printf("DML::%s: max_req_outstanding = %d\n", __func__, arb_param->max_req_outstanding);
diff --git a/drivers/gpu/drm/amd/display/dc/hubbub/dcn10/dcn10_hubbub.h b/drivers/gpu/drm/amd/display/dc/hubbub/dcn10/dcn10_hubbub.h
index a1e2cde9c4cc..4bd1dda07719 100644
--- a/drivers/gpu/drm/amd/display/dc/hubbub/dcn10/dcn10_hubbub.h
+++ b/drivers/gpu/drm/amd/display/dc/hubbub/dcn10/dcn10_hubbub.h
@@ -198,6 +198,8 @@ struct dcn_hubbub_registers {
uint32_t DCHUBBUB_ARB_REFCYC_PER_META_TRIP_B;
uint32_t DCHUBBUB_ARB_FRAC_URG_BW_MALL_A;
uint32_t DCHUBBUB_ARB_FRAC_URG_BW_MALL_B;
+ uint32_t DCHUBBUB_TIMEOUT_DETECTION_CTRL1;
+ uint32_t DCHUBBUB_TIMEOUT_DETECTION_CTRL2;
};
#define HUBBUB_REG_FIELD_LIST_DCN32(type) \
@@ -313,7 +315,12 @@ struct dcn_hubbub_registers {
type DCN_VM_ERROR_VMID;\
type DCN_VM_ERROR_TABLE_LEVEL;\
type DCN_VM_ERROR_PIPE;\
- type DCN_VM_ERROR_INTERRUPT_STATUS
+ type DCN_VM_ERROR_INTERRUPT_STATUS;\
+ type DCHUBBUB_TIMEOUT_ERROR_STATUS;\
+ type DCHUBBUB_TIMEOUT_REQ_STALL_THRESHOLD;\
+ type DCHUBBUB_TIMEOUT_PSTATE_STALL_THRESHOLD;\
+ type DCHUBBUB_TIMEOUT_DETECTION_EN;\
+ type DCHUBBUB_TIMEOUT_TIMER_RESET
#define HUBBUB_STUTTER_REG_FIELD_LIST(type) \
type DCHUBBUB_ARB_ALLOW_SR_ENTER_WATERMARK_A;\
diff --git a/drivers/gpu/drm/amd/display/dc/hubbub/dcn401/dcn401_hubbub.c b/drivers/gpu/drm/amd/display/dc/hubbub/dcn401/dcn401_hubbub.c
index 37d26fa0b6fb..5d658e9bef64 100644
--- a/drivers/gpu/drm/amd/display/dc/hubbub/dcn401/dcn401_hubbub.c
+++ b/drivers/gpu/drm/amd/display/dc/hubbub/dcn401/dcn401_hubbub.c
@@ -1192,6 +1192,17 @@ static void dcn401_wait_for_det_update(struct hubbub *hubbub, int hubp_inst)
}
}
+static void dcn401_program_timeout_thresholds(struct hubbub *hubbub, struct dml2_display_arb_regs *arb_regs)
+{
+ struct dcn20_hubbub *hubbub2 = TO_DCN20_HUBBUB(hubbub);
+
+ /* request backpressure and outstanding return threshold (unused)*/
+ //REG_UPDATE(DCHUBBUB_TIMEOUT_DETECTION_CTRL1, DCHUBBUB_TIMEOUT_REQ_STALL_THRESHOLD, arb_regs->req_stall_threshold);
+
+ /* P-State stall threshold */
+ REG_UPDATE(DCHUBBUB_TIMEOUT_DETECTION_CTRL2, DCHUBBUB_TIMEOUT_PSTATE_STALL_THRESHOLD, arb_regs->pstate_stall_threshold);
+}
+
static const struct hubbub_funcs hubbub4_01_funcs = {
.update_dchub = hubbub2_update_dchub,
.init_dchub_sys_ctx = hubbub3_init_dchub_sys_ctx,
@@ -1215,6 +1226,7 @@ static const struct hubbub_funcs hubbub4_01_funcs = {
.program_det_segments = dcn401_program_det_segments,
.program_compbuf_segments = dcn401_program_compbuf_segments,
.wait_for_det_update = dcn401_wait_for_det_update,
+ .program_timeout_thresholds = dcn401_program_timeout_thresholds,
};
void hubbub401_construct(struct dcn20_hubbub *hubbub2,
diff --git a/drivers/gpu/drm/amd/display/dc/hubbub/dcn401/dcn401_hubbub.h b/drivers/gpu/drm/amd/display/dc/hubbub/dcn401/dcn401_hubbub.h
index f35f19ba3e18..5f1960722ebd 100644
--- a/drivers/gpu/drm/amd/display/dc/hubbub/dcn401/dcn401_hubbub.h
+++ b/drivers/gpu/drm/amd/display/dc/hubbub/dcn401/dcn401_hubbub.h
@@ -123,8 +123,12 @@
HUBBUB_SF(DCHUBBUB_CLOCK_CNTL, DCFCLK_R_DCHUBBUB_GATE_DIS, mask_sh),\
HUBBUB_SF(DCHUBBUB_SDPIF_CFG0, SDPIF_PORT_CONTROL, mask_sh),\
HUBBUB_SF(DCHUBBUB_SDPIF_CFG1, SDPIF_MAX_NUM_OUTSTANDING, mask_sh),\
- HUBBUB_SF(DCHUBBUB_MEM_PWR_MODE_CTRL, DET_MEM_PWR_LS_MODE, mask_sh)
-
+ HUBBUB_SF(DCHUBBUB_MEM_PWR_MODE_CTRL, DET_MEM_PWR_LS_MODE, mask_sh),\
+ HUBBUB_SF(DCHUBBUB_TIMEOUT_DETECTION_CTRL1, DCHUBBUB_TIMEOUT_ERROR_STATUS, mask_sh),\
+ HUBBUB_SF(DCHUBBUB_TIMEOUT_DETECTION_CTRL1, DCHUBBUB_TIMEOUT_REQ_STALL_THRESHOLD, mask_sh),\
+ HUBBUB_SF(DCHUBBUB_TIMEOUT_DETECTION_CTRL2, DCHUBBUB_TIMEOUT_PSTATE_STALL_THRESHOLD, mask_sh),\
+ HUBBUB_SF(DCHUBBUB_TIMEOUT_DETECTION_CTRL2, DCHUBBUB_TIMEOUT_DETECTION_EN, mask_sh),\
+ HUBBUB_SF(DCHUBBUB_TIMEOUT_DETECTION_CTRL2, DCHUBBUB_TIMEOUT_TIMER_RESET, mask_sh)
bool hubbub401_program_urgent_watermarks(
struct hubbub *hubbub,
diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c
index 3c70f40bf047..e8cc1bfa73f3 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c
@@ -1554,6 +1554,11 @@ void dcn401_optimize_bandwidth(
pipe_ctx->dlg_regs.min_dst_y_next_start);
}
}
+
+ /* update timeout thresholds */
+ if (hubbub->funcs->program_timeout_thresholds) {
+ hubbub->funcs->program_timeout_thresholds(hubbub, &context->bw_ctx.bw.dcn.arb_regs);
+ }
}
void dcn401_fams2_global_control_lock(struct dc *dc,
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h b/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h
index 67c32401893e..6c1d41c0f099 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h
@@ -228,6 +228,7 @@ struct hubbub_funcs {
void (*program_det_segments)(struct hubbub *hubbub, int hubp_inst, unsigned det_buffer_size_seg);
void (*program_compbuf_segments)(struct hubbub *hubbub, unsigned compbuf_size_seg, bool safe_to_increase);
void (*wait_for_det_update)(struct hubbub *hubbub, int hubp_inst);
+ void (*program_timeout_thresholds)(struct hubbub *hubbub, struct dml2_display_arb_regs *arb_regs);
};
struct hubbub {
diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.h b/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.h
index bdafa7496cea..7c8d61db153d 100644
--- a/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.h
+++ b/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.h
@@ -610,7 +610,9 @@ void dcn401_prepare_mcache_programming(struct dc *dc, struct dc_state *context);
SR(DCHUBBUB_CLOCK_CNTL), \
SR(DCHUBBUB_SDPIF_CFG0), \
SR(DCHUBBUB_SDPIF_CFG1), \
- SR(DCHUBBUB_MEM_PWR_MODE_CTRL)
+ SR(DCHUBBUB_MEM_PWR_MODE_CTRL), \
+ SR(DCHUBBUB_TIMEOUT_DETECTION_CTRL1), \
+ SR(DCHUBBUB_TIMEOUT_DETECTION_CTRL2)
/* DCCG */
--
2.34.1
